WO2023116369A1 - Delivery system and control handle thereof - Google Patents

Abstract

A delivery system and a control handle. A bending control handle (10) comprises a housing (11), a bending control assembly (12), and a movement assembly (13); the bending control assembly (12) comprises an inner rod (121), a sleeve (122), a traction member (123), and a bending control knob (124); the inner rod (121) is axially movably provided in the housing (11); the sleeve (122) is rotatably sleeved on the outer periphery of the inner rod (121); the sleeve (122) and the inner rod (121) are mutually axially limited; the traction member (123) threadedly matches the sleeve (122); the bending control knob (124) is connected to the sleeve (122); the bending control knob (124) is used for driving the sleeve (122) to rotate with respect to the inner rod (121), such that the traction member (123) moves along the axial direction of the inner rod (121); and the movement assembly (13) is used for driving the inner rod (121) to move along the axial direction with respect to the housing (11).

Description

Delivery system and its control handle

This application claims the priority of the Chinese patent application No. 202111604697X filed on December 24, 2021, entitled "Conveyor system and its control handle", and the application No. 2021116046999, filed on December 24, 2021 The priority of the Chinese patent application entitled "Conveyor System and Its Control Handle" is hereby incorporated by reference in its entirety.

technical field

The present application relates to the field of interventional medical technology, in particular to a delivery system and a control handle thereof.

Background technique

According to surveys, the chances of middle-aged and elderly people suffering from coronary heart disease, cardiovascular and cerebrovascular diseases, heart valve diseases, tumors and other diseases are increasing year by year. These diseases directly affect the quality of life and even life safety of middle-aged and elderly people. Traditional surgical treatment is still the first choice for seriously ill patients. However, for patients who are elderly, complicated with multiple organ diseases, have a history of open chest surgery, and have poor physical recovery function, traditional surgery has high risks and high mortality. Patients do not even have the chance of surgery. In the past ten years, international heart valve interventional therapy has made significant progress through continuous exploration and has become the most promising branch in the field of interventional therapy.

Interventional therapy is a brand-new treatment technology developed internationally in recent years. Its principle is to use modern high-tech means to conduct a minimally traumatic treatment. Under the guidance of medical imaging equipment, special precision instruments are introduced into the human body. Lesions are diagnosed and treated locally. This technology has the characteristics of no surgery, less trauma, quick recovery and good effect, and avoids the harm caused by traditional surgery to patients.

The control handle is used as the operating part to provide the power source for the entire interventional treatment. Usually there are pure manual control handles, pure electric control handles or manual electric hybrid control handles. No matter which kind of control handle is similar, it is necessary to ensure sufficient safety, effectiveness and economy. However, in the current delivery system, the operation convenience of the control handle is not enough. For example, in the bending operation to make the delivery tube adapt to the bending of the pushing path (such as a blood vessel), the position of the bending control is prone to be inaccurate. The problem of untimely control of bending leads to prolongation of operation time and increases the risk of operation.

Contents of the invention

According to various embodiments of the present application, a delivery system and a control handle thereof are provided.

The present application provides a control handle, which is used to control the bending operation of the elongated element during interventional treatment, and the control handle includes:

case;

The bending control assembly includes an inner rod, a sleeve, a traction piece and a bending control knob, the inner rod is axially movably arranged in the housing, and the sleeve is rotatably sleeved on the outer periphery of the inner rod , and the sleeve and the inner rod axially limit each other, the traction member is threadedly engaged with the sleeve, the bending control knob is connected with the sleeve, and the bending control knob is used to drive The casing rotates relative to the inner rod, so that the casing screw drives the traction member to move along the axial direction of the inner rod, and when the traction member moves along the axial direction of the inner rod, it can the elongate element creates traction to cause the elongate element to bend; and

The moving assembly is used to drive the inner rod to move axially relative to the housing.

In another aspect, the present application provides a delivery system, comprising a catheter assembly and the above-mentioned control handle, the proximal end of the catheter assembly is connected to the control handle, and the control handle is used to control the bending of the catheter assembly.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain the drawings of other embodiments according to these drawings without creative work.

Fig. 1 is a structural schematic diagram of a control handle of a delivery system according to an embodiment;

Fig. 2 is a schematic side view of a control handle according to an embodiment;

Fig. 3 is a schematic diagram of the internal structure of a control handle according to an embodiment;

Fig. 4 is another structural schematic diagram of a control handle according to an embodiment;

Fig. 5 is an enlarged schematic diagram of the local structure at the circle A of the control handle shown in Fig. 3;

Fig. 6 is an enlarged schematic diagram of the local structure at the circle B of the control handle shown in Fig. 3;

Fig. 7 is an enlarged schematic diagram of the local structure at the circle C of the control handle shown in Fig. 3;

Fig. 8 is a schematic structural diagram of a moving assembly of a control handle according to an embodiment;

Fig. 9 is a structural schematic diagram of the moving assembly of the control handle in another state according to one embodiment;

Fig. 10 is a control handle according to an embodiment, a structural schematic view of adjusting the bending control knob so that the traction member is in a certain position;

Fig. 11 is an enlarged schematic diagram of the local structure at the circle D of the control handle shown in Fig. 10;

Fig. 12 is a control handle according to an embodiment, a structural schematic view of adjusting the bending control knob so that the traction member is in another position;

Fig. 13 is an enlarged schematic diagram of the local structure at the circle E of the control handle shown in Fig. 12;

Fig. 14 is another structural schematic diagram of the bending control assembly in the control handle of an embodiment;

Fig. 15 is a schematic structural view of a delivery system according to an embodiment;

Fig. 16 is a schematic diagram of the internal structure of the control handle of the delivery system in one embodiment;

Fig. 17 is a schematic diagram of the structure of the control handle in one embodiment, when the rotating member drives the second transmission member to move to a certain position;

Fig. 18 is an enlarged schematic diagram of the local structure at the circle F of the control handle shown in Fig. 17;

Fig. 19 is a structural schematic diagram of a control handle according to an embodiment, in which the rotating member drives the second transmission member to move to another position;

Fig. 20 is an enlarged schematic diagram of the local structure at the circle G of the control handle shown in Fig. 19;

Fig. 21 is a partial structural schematic diagram of a control handle of a delivery system according to an embodiment;

Fig. 22 is an enlarged schematic diagram of the local structure at the circle H of the control handle shown in Fig. 21;

Fig. 23 is an enlarged schematic diagram of the partial structure at the circle I of the control handle shown in Fig. 21;

Fig. 24 is an enlarged schematic diagram of the local structure at the circle J of the control handle shown in Fig. 21;

Fig. 25 is an enlarged schematic diagram of the local structure at the circle K of the control handle shown in Fig. 21;

Fig. 26 is a schematic diagram of the overall structure of the control handle of the delivery system according to an embodiment.

Description of reference numerals: 100, conveying system; 10, control handle; 10a, first fixed ring; 10b, second fixed ring; 10c, third fixed ring; 11, shell; 11a, first shell; 11b, second Two shells; 11c, scale window; 11d, catheter sheath; 111, distal fixing seat; 112, proximal fixing seat; 113, distal sealing ring; 114, first positioning seat; 115, proximal sealing ring; 116 , second positioning seat; 12, control bending assembly; 121, inner rod; 121a, inner rod fixing ring; 1211, guide groove; 1212, inner rod cover; 122, casing; 1221, limit seat; Nut; 122a, card protrusion; 123, traction member; 1231, first traction member; 1232, second traction member; 123a, threaded connection portion; 123b, pull wire portion; 124, bending control knob; 124a, first cover; 124b, second cover body; 125, limit retaining ring; 126, indicator; 127, guide rod; 13, moving assembly; 131, connecting pipe; 131a, limit groove; 132, connecting rod; 1321, pull ring; 133, linkage; 134, movable sleeve; 1341, first casing; 1342, second casing; 134a, avoidance groove; 135, first transmission part; 135a, first thread fitting part; 135b, limit part ; 136, the first spring; 137, the locking piece; 1371, push the switch part; 138, the second spring; 139, the limit piece; 14, the first operating part; 141, the first housing; 141b, scale area; 142, guide tube; 142a, threaded section; 142b, first limit part; 142c, buckle connection part; 143, second transmission part; 144. Rotating part; 1441. Threaded pipe; 1442. Knob; 145. Case; 145a. First engaging part; 145b. Second limiting part; 1451. First shell part; 1452. Second shell part; 146 , thread sleeve; 146a, clamping part; 15, second operating part; 151, main body part; 1511, second housing; 1512, support seat; 152, lock switch; Elastic part; 20, conduit assembly; 20a, emptying pipe; 21, controlled bending conduit; 22, first pipe fitting; 23, second pipe fitting; 24, emptying pipe fixing seat; 24a, emptying port; 25, sealing ring ; 26, positioning seat; 27, limit ring.

Detailed ways

In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. A preferred embodiment of the application is shown in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

It should be noted that "distal end" and "proximal end" are used as orientation words, which are commonly used terms in the field of interventional medical devices, where "distal end" means the end away from the operator during the operation, and "proximal end" means The end near the operator during surgery. Axial means the direction parallel to the line connecting the center of the distal end and the center of the proximal end of the medical device; radial means the direction perpendicular to the aforementioned axial direction. In this application, the axial limit between two objects means that the two objects will not be displaced relative to each other in the axial direction. For example, in the control handle 10 shown in FIG. 4 , the sleeve 122 and the inner rod 121 are mutually axially limited, and the sleeve 122 cannot move axially relative to the inner rod 121 . For another example, in the control handle 10 shown in FIG. 15 , when the locking switch 152 axially limits the first operating part 14 relative to the second operating part 15 , the first operating part 14 and the second operating part 15 will be separated from each other. Relative movement cannot occur along the axial direction.

Referring to FIG. 1 and FIG. 2 , an embodiment of the present application provides a delivery system 100 , which is used to deliver an implant to an implantation site during an interventional treatment operation. The implant can be a vascular stent, a prosthetic valve or an occluder, etc. Correspondingly, the implantation location may be a blood vessel, a heart, or a left atrial appendage.

Delivery system 100 includes control handle 10 and catheter assembly 20 . The control handle 10 is used to control the bending operation of the elongated element during the interventional treatment. For example, in this embodiment, the elongated element includes but is not limited to the catheter assembly 20, specifically, the proximal end of the catheter assembly 20 and the control handle 10 In connection with each other, the control handle 10 is used to control the bending of the catheter assembly 20, so that the catheter assembly 20 adapts to the bending of the blood vessel in the process of entering the body, so as to reduce damage to the blood vessel wall. In some other embodiments, the control handle 10 can also be used to control elongated elements other than the catheter assembly 20 such as guide wires, delivery catheters or push rods to perform bending operations. Object, whose type is not limited here. For example, in some embodiments, taking the elongated element including the delivery sheath as an example, during the interventional treatment, when the delivery catheter is used to establish a delivery path in the human body, it is necessary to adjust the bend of the delivery catheter, and the operation of the adjustment can be completed through this Control the handle 10 to finally make the delivery catheter build a path in the human body for the puncture catheter to be pushed into the body for puncture.

As shown in FIG. 3 to FIG. 5 , the control handle 10 includes a housing 11 , a bending control assembly 12 and a moving assembly 13 .

Wherein, the bending control assembly 12 includes an inner rod 121 , a sleeve 122 , a traction member 123 and a bending control knob 124 . The inner rod 121 is axially movably disposed in the housing 11 , the sleeve 122 is rotatably sleeved on the outer periphery of the inner rod 121 , and the sleeve 122 and the inner rod 121 are mutually axially limited. The traction member 123 is threadedly engaged with the sleeve 122 , the traction member 123 has external threads, and the sleeve 122 has internal threads, so that the traction member 123 is threadedly engaged with the sleeve 122 . The bending control knob 124 is connected with the sleeve 122, and the bending control knob 124 is used to drive the sleeve 122 to rotate relative to the inner rod 121, so that the sleeve 122 is threaded to drive the traction member 123 to move along the axial direction of the inner rod 121, and the traction member 123 moves along the axial direction of the inner rod 121. When the inner rod 121 moves axially, it can generate traction force on the elongated element to make the elongated element bend, and then realize the bending control operation of the elongated element.

The moving assembly 13 is used to drive the inner rod 121 to move axially relative to the casing 11 . Since the sleeve 122 and the inner rod 121 are mutually axially limited, that is, the sleeve 122 cannot move axially relative to the inner rod 121, so that when the inner rod 121 moves axially in the casing 11, the sleeve 122 will also move along with the inner rod 121. The inner rods 121 move together. That is to say, in this embodiment, when the moving assembly 13 drives the inner rod 121 to move axially in the casing 11, the sleeve 122 and the bending control knob 124 both move axially along with the inner rod 121, correspondingly, The traction member 123 threaded with the bushing 122 also moves axially along with the bushing 122, thereby realizing the axial movement of the bending control assembly 12 relative to the housing 11 as a whole, so that the bending control assembly 12 can adapt to different positions of the bending control assembly. Bend required. To be precise, during the axial movement of the bending control assembly 12 relative to the housing 11, the sleeve 122 can be threaded to drive the traction member 123 to move axially along the inner rod 121 by rotating the bending control knob 124, so as to realize the adjustment of the slender element. Real-time bending control, that is, at any position during the axial movement process of the bending control assembly 12 relative to the housing 11, the pulling member 123 can pull the slender element by turning the bending control knob 124 to complete the slender element. Bending operation of components. Therefore, it is convenient to move the slender element to an accurate position with the bending control assembly 12 and perform the bending control operation in time, avoiding inaccurate positioning of the bending control position and untimely bending control.

The pulling member 123 includes a threaded connection part 123a connected with a pull wire part 123b. The threaded connection part 123a is threadedly connected with the sleeve 122, and the pull wire part 123b is used for connecting with the elongated element through a pull wire.

It should be noted that the elongated element and the inner rod 121 axially limit each other, so that when the sleeve 122 rotates relative to the inner rod 121, the sleeve 122 is threaded to drive the threaded connection part 123a, so that the threaded connection part 123a drives the pull wire part 123b along the The axial movement of the inner rod 121 facilitates the axial relative movement between the pull wire portion 123b and the inner rod 121 to adjust the bending of the elongated element, that is, to achieve the effect of bending control.

In some embodiments, the sleeve 122 is coaxially sleeved on the inner rod 121, the traction member 123 is an annular structure, the traction member 123 is sleeved between the inner rod 121 and the sleeve 122, and the inner rod 121 is used for the traction member 123. The axial movement provides support, so that when the sleeve 122 rotates around the inner rod 121, the traction member 123 moves smoothly along the axial direction of the inner rod 121, so as to ensure the bending stability of the traction member 123 to the elongated element.

In some embodiments, the traction member 123 and the inner rod 121 are oppositely provided with a sliding fit structure, so as to realize the guide positioning of the traction member 123 when it moves axially relative to the inner rod 121 by utilizing the mutual sliding fit.

Specifically, as shown in FIG. 5 and FIG. 6 , the inner rod 121 is provided with a guide groove 1211, and the guide groove 1211 extends parallel to the axial direction of the inner rod 121 and is used to guide the traction member 123 along the axial direction of the inner rod 121. move. To be precise, the setting of the guide groove 1211 limits the rotational movement of the traction member 123 around the inner rod 121, that is, the circumferential direction of the traction member 123 is limited to the inner rod 121, so that when the sleeve 122 rotates around the inner rod 121, the sleeve 122 is threaded to drive the traction. The member 123 moves axially along the inner rod 121, and the pulling member 123 does not rotate relative to the inner rod 121, so that when the pulling member 123 moves axially relative to the inner rod 121, the pulling member 123 is opposite to one point in the circumferential direction of the elongated member. Axial traction is applied so that the elongated element is stably bent.

It should be noted that, the connection manner of the elongated element and the corresponding element of the control handle 10 may be integrally formed. The slender elements and the corresponding elements of the control handle 10 can also be connected by means such as threading, riveting, pin connection, bonding, etc. Such arrangement makes processing and assembly easy. There is no limitation on the way of connection between them, as long as it can meet the functional requirements of the corresponding components.

As shown in FIG. 4 to FIG. 6 , an emptying pipe 20 a is provided in the casing 11 for removing air in the delivery system 100 . Specifically, the housing 11 is provided with a distal fixing seat 111 and a proximal fixing seat 112, and the distal end and the proximal end of the emptying tube 20a are respectively connected with the distal fixing seat 111 and the proximal fixing seat 112, and are sealed. , to improve the emptying effect.

Referring to FIG. 5, the distal fixing seat 111 is provided with a distal sealing ring 113, and the distal sealing ring 113 is stably abutted against the distal fixing seat 111 through the first positioning seat 114, so that the distal sealing ring 113 Good sealing performance is exerted between the distal fixing seat 111 and the emptying tube 20a.

Correspondingly, as shown in FIG. 6, the proximal fixing seat 112 is provided with a proximal sealing ring 115, and the proximal sealing ring 115 is stably abutted against the proximal fixing seat 112 through the second positioning seat 116, so that the proximal The sealing ring 115 exerts a good sealing performance between the proximal fixing seat 112 and the emptying tube 20a.

It should be noted that the proximal end of the inner rod 121 is provided with an inner rod cover 1212 , and the proximal fixing seat 112 is fixed in the inner rod cover 1212 . The catheter assembly 20 includes a bending-controlling catheter 21, which is fixed in the inner rod 121, so that when the inner rod 121 moves axially relative to the housing 11, the bending-controlling catheter 21 can move relative to the housing 11 together with the inner rod 121 axial movement.

Continuing to refer to Fig. 5 and Fig. 6, in some embodiments, the distal end of the sleeve 122 is provided with a limit seat 1221, the limit seat 1221 can move in the housing 11 along the axial direction of the inner rod 121, and align the sleeve The tube 122 is axially limited. The distal end of the inner rod 121 passes through the limit seat 1221, and is threadedly connected to the limit nut 1222. The limit nut 1222 is located on the distal side of the limit seat 1221, so that the inner rod 121 cannot move towards the proximal end relative to the limit seat 1221. move. The distal end surface of the sleeve 122 abuts against the proximal side of the limiting seat 1221 , so that the limiting seat 1221 prevents the sleeve 122 from moving distally relative to the inner rod 121 .

The proximal side of the bending control knob 124 is provided with a limit retaining ring 125, and the limit retaining ring 125 axially limits the bending control knob 124, so that the entire bending control assembly 12 can be axially opposed along with the inner rod 121. The casing 11 moves. It should be noted that the stop ring 125 only axially limits the bending control knob 124 and does not hinder the rotation of the bending control knob 124 together with the sleeve 122 relative to the inner rod 121 .

Since the inner rod 121, the sleeve 122 and the bending control knob 124 are mutually axially limited, the inner rod 121 moves axially relative to the housing 11, and the sleeve 122 and the bending control knob 124 also move relative to the housing together. 11 move along the axis. Correspondingly, when the bushing 122 and the bending control knob 124 move axially relative to the housing 11 , the inner rod 121 also moves axially relative to the housing 11 . Based on this, the moving assembly 13 can be directly connected with the inner rod 121 to drive the inner rod 121 to move. The moving assembly 13 can also move the inner rod 121 axially relative to the housing 11 by driving the sleeve 122 or the bending control knob 124 to move axially relative to the housing 11 . The manner in which the moving assembly 13 drives the inner rod 121 to move axially relative to the housing 11 is not limited here. As long as the axial position of the inner rod 121 relative to the housing 11 can be adjusted by moving the assembly 13, the axial position of the bending control assembly 12 relative to the housing 11 can be adjusted, so that the bending control assembly 12 can be used to control the elongated element in real time. Control the bend.

In some embodiments, as shown in FIG. 3 and FIG. 4 , the moving assembly 13 includes a connecting pipe 131 , a connecting rod 132 , a linkage 133 and a movable sleeve 134 .

The connecting pipe 131 is connected to the housing 11 , and the connecting rod 132 is movably passed through the connecting pipe 131 and coaxially fixedly connected with the inner rod 121 . Therefore, when the connecting rod 132 moves in the connecting tube 131 , it drives the inner rod 121 to move axially together, so that the inner rod 121 moves axially relative to the casing 11 .

The linkage member 133 is circumferentially limited on the connecting pipe 131 and can move along the axial direction of the connecting pipe 131 . That is to say, the linkage member 133 cannot rotate relative to the connecting pipe 131 , but can move along the axial direction of the connecting pipe 131 . For example, as shown in FIG. 2 to FIG. 4 , the connecting pipe 131 defines a limiting groove 131a, the extending direction of the limiting groove 131a is parallel to the axial direction of the connecting pipe 131, and the linkage 133 can move along the limiting groove 131a. For another example, part of the structure of the linkage 133 is arranged around the peripheral side of the connecting pipe 131, and the sliding groove and the sliding protrusion extending in the axial direction cooperate between the two, so that the linkage 133 can only move along the axial direction of the connecting pipe 131. Move but not rotate around the axial direction of the connecting pipe 131.

Both the movable sleeve 134 and the connecting rod 132 are axially limited by the linkage member 133 , so that when the movable sleeve 134 moves in the axial direction, it can drive the connecting rod 132 to move in the axial direction through the linkage member 133 . Specifically, the movable sleeve 134 is movably connected with the connecting pipe 131, and the movable sleeve 134 is used to drive the linkage 133 to move axially relative to the connecting pipe 131, so that the linkage 133 drives the connecting rod 132 to move axially relative to the connecting pipe 131, and then connects The rod 132 drives the inner rod 121 in the axial direction relative to the housing 11, so that the bending control assembly 12 moves in the axial direction relative to the housing 11, so as to meet the requirement of the bending control assembly 12 for real-time bending control of the elongated element.

As shown in Figure 3 and Figure 4, the proximal end of the connecting rod 132 is fixed with a pull ring 1321, and the pull ring 1321 is connected with the linkage 133, so that when the linkage 133 moves axially relative to the connecting tube 131, the linkage 133 passes through the pull ring. 1321 drives the connecting rod 132 to move axially relative to the connecting pipe 131 . Since the connecting pipe 131 is connected to the housing 11 , the connecting rod 132 moves axially with the inner rod 121 relative to the housing 11 to adjust the axial position of the bending control assembly 12 relative to the housing 11 .

There are many ways to realize the connection between the connecting pipe 131 and the housing 11 . For example, the connecting pipe 131 is provided with an engaging portion, and the housing 11 realizes a stable connection with the connecting pipe 131 by engaging with the engaging portion. For another example, the casing 11 is connected to the connection pipe 131 through structural members such as screws or pins, and the connection method between the connection pipe 131 and the casing 11 is not limited herein.

The connection mode between the connecting rod 132 and the inner rod 121 can be sleeved, snap-fit connection or welding, or integrally formed. As long as the linkage 133 can drive the connecting rod 132 to move in the connecting tube 131 , the inner rod 121 can move axially with the connecting rod 132 relative to the casing 11 .

For example, in some embodiments, as shown in FIG. 3 and FIG. 6 , the inner rod 121 and the connecting rod 132 are connected through the inner rod fixing ring 121 a, so that the entire inner rod 121 and the connecting rod 132 can move axially together.

Further, the inner rod 121 and the connecting rod 132 are plug-fitted to realize the pre-fit of the inner rod 121 and the connecting rod 132. At this time, only the inner rod fixing ring 121a is required to axially limit the inner rod 121 and the connecting rod 132 at together so that the two cannot be separated. Specifically, the end of the inner rod 121 is provided with an external thread, and the inner rod fixing ring 121a is provided with an internal thread matching the outer thread, so that the inner rod fixing ring 121a can be threadedly engaged with the inner rod 121 . In this embodiment, the inner rod fixing ring 121a has a blocking wall for axially limiting the connecting rod 132. After the inner rod fixing ring 121a is threadedly fitted with the inner rod 121, the blocking wall restricts the inner rod 121 from axially moving relative to the connecting rod 132. move, thereby achieving a stable connection between the inner rod 121 and the connecting rod 132 .

Referring to FIG. 1 , the movable sleeve 134 may include a first sleeve 1341 and a second sleeve 1342 , so as to movably assemble the movable sleeve 134 to the connecting pipe 131 . The first casing 1341 and the second casing 1342 may be connected by screws, buckles or glue, and the connection structure between the two is not limited here.

It should be noted that there are many possible ways for the movable sleeve 134 to realize the axial movement of the driving linkage 133 relative to the connecting pipe 131 .

In some embodiments, the movable sleeve 134 can only move axially relative to the connecting pipe 131 , since the movable sleeve 134 and the linkage 133 are mutually axially limited, the movable sleeve 134 can be used to drive the linkage 133 to move axially relative to the connecting pipe 131 . to move.

In other embodiments, the movable sleeve 134 can not only move axially relative to the connecting pipe 131 , but also can rotate relative to the connecting pipe 131 . Specifically, the movable sleeve 134 and the linkage 133 can rotate relative to each other in the circumferential direction, and the movable sleeve 134 can rotate relative to the connecting pipe 131 . When the movable sleeve 134 rotates relative to the connecting pipe 131 , the movable sleeve 134 moves axially relative to the connecting pipe 131 .

For example, the movable sleeve 134 has an internal thread, and the connecting pipe 131 has an external thread. Through the cooperation of the internal thread and the external thread, when the movable sleeve 134 rotates relative to the connecting pipe 131 , the movable sleeve 134 moves axially relative to the connecting pipe 131 . Utilizing the threaded connection between the movable sleeve 134 and the connecting pipe 131, during the rotation of the movable sleeve 134 relative to the connecting pipe 131, the relative displacement in the axial direction between the two can be accurately controlled, thereby improving the control of the bending position. Adjust precision.

For another example, as shown in FIG. 6 and FIG. 7 , the movable sleeve 134 is movably connected with a first transmission member 135 , the first transmission member 135 has a first thread fitting portion 135 a, and the first transmission member 135 can move relative to the movable sleeve 134 to the first state or the second state.

Specifically, in the first state, the first thread fitting portion 135a is screwed to the connecting pipe 131, so that when the movable sleeve 134 rotates relative to the connecting pipe 131, the first transmission member 135 drives the movable sleeve 134 to move axially relative to the connecting pipe 131. Moving, in the second state, the first thread fitting part 135a releases the thread fitting between the connecting pipe 131 .

Since in the first state, the first threaded fitting portion 135a is screwed to the connecting pipe 131, so in this state, the movable sleeve 134 can be moved accurately along the axial direction of the connecting pipe 131 by operating the movable sleeve 134 to rotate relative to the connecting pipe 131 , so as to improve the axial movement accuracy of the overall bending control assembly 12 . Since in the second state, the first threaded fitting part 135a releases the threaded fit between the connecting pipe 131, at this time the movable sleeve 134 can be quickly operated to move axially relative to the connecting pipe 131, so as to quickly move the bending control assembly 12 relative to the casing. The body 11 is axially moved to a proper position to improve operation efficiency.

To sum up, in the first state, the rotation of the movable sleeve 134 relative to the connecting pipe 131 to realize the axial movement of the bending control assembly 12 can be regarded as fine adjustment. In the second state, since there is no threaded fit between the first threaded fitting portion 135a and the connecting pipe 131, the movable sleeve 134 can quickly drive the linkage 133 to move axially relative to the connecting pipe 131, so that the connecting rod 132 together with the inner rod 121 can move rapidly in the axial direction relative to the housing 11 to realize coarse adjustment of the axial position of the bending control assembly 12 , so as to improve the adjustment efficiency when the axial position of the bending control assembly 12 relative to the housing 11 needs to be adjusted.

Of course, in some applications where the accuracy of the bending control position is relatively low, the movable sleeve 134 can be operated to move axially relative to the connecting pipe 131 only in the second state, so as to complete the bending control as soon as possible while meeting the precision requirements. The adjustment of the axial position of the assembly 12 relative to the casing 11 improves the operation efficiency, saves operation time, and reduces risks.

It should be noted that the first transmission member 135 can be set as a button structure, so as to achieve state switching by pressing, for example, pressing the first transmission member 135 can make the first threaded part 135a of the first transmission member 135 connect with The external thread of the pipe 131 realizes the threaded connection.

Further, as shown in Fig. 6 and Fig. 7, a first spring 136 is provided between the first transmission member 135 and the movable sleeve 134, and the first spring 136 is used to drive the first transmission member 135 from the first state to the second state. State reset movement. Therefore, during operation, the operator only needs to press the first transmission member 135 to overcome the elastic force of the first spring 136 to put the first transmission member 135 in the first state, and the operation is very simple.

In some embodiments, the first transmission member 135 is passed through the movable sleeve 134 in a direction perpendicular to the connecting pipe 131, the first transmission member 135 has a limiting portion 135b, the movable sleeve 134 is provided with a locking member 137, and the locking member 137 is used to cooperate with the limiting portion 135b to limit the first transmission member 135 in the first state, so that the operator does not need to keep pressing the first transmission member 135 during the operation, which makes the operation more convenient.

It should be noted that when the first transmission member 135 needs to return to the second state, it is only necessary to release the locking effect of the locking member 137 on the limiting portion 135b.

Further, a second spring 138 is provided between the locking member 137 and the movable sleeve 134, and the second spring 138 is used to drive the locking member 137 to return to the locking position. In this way, when the first transmission member 135 needs to be switched from the first state to the second state, it is only necessary to move the locking member 137 toward the unlocked position, so that the locking member 137 overcomes the elastic force of the second spring 138 to leave the locked position, The locking effect of the locking member 137 on the limiting portion 135b can be released, and at this time, the first transmission member 135 can return from the first state to the second state under the elastic force of the first spring 136, and the operation is very simple.

It can be understood that since the second spring 138 has the effect of returning the locking member 137 to the locking position, when the locking member 137 at the locking position locks the limiting portion 135b, the second spring 138 effectively ensures the locking effect of the locking member 137 on the limiting portion 135b, and the operator does not need to press the first transmission member 135 all the time to overcome the elastic force of the first spring 136 acting on the first transmission member 135. The limiting portion 135b is kept in the first state, that is, the threaded engagement between the first threaded portion 135a of the first transmission member 135 and the connecting pipe 131 is maintained. At this time, it is only necessary to rotate the movable sleeve 134 to adjust the axial position of the bending control assembly 12 relative to the housing 11, thereby improving the adjustment of the axial position of the bending control assembly 12 when the first transmission member 135 is in the first state. Convenience.

For ease of understanding, description will be made below in conjunction with the partial structural schematic diagrams of the moving assembly 13 shown in FIG. 8 and FIG. 9 .

As shown in FIG. 8 , when the first transmission member 135 is pressed, the first transmission member 135 presses the first spring 136 , and makes the first thread fitting portion 135 a of the first transmission member 135 thread-fit with the connecting pipe 131 . The second spring 138 drives the locking member 137 to move towards the locked position, so that the locking member 137 limits the position of the limiting portion 135b of the first transmission member 135, preventing the first transmission member 135 from being under the elastic force of the first spring 136. Leave the connecting pipe 131 , and then keep the first thread fitting portion 135 a in the state of being fitted with the connecting pipe 131 . At this time, it is only necessary to rotate the movable sleeve 134 relative to the connecting pipe 131 so that the movable sleeve 134 rotates around the connecting pipe 131 together with the first transmission member 135. The transmission member 135 moves axially with the movable sleeve 134 relative to the connecting pipe 131, so that the linkage 133 that is axially limited by the movable sleeve 134 can drive the connecting rod 132 and the inner rod 121 to move axially together to realize the bending control assembly By adjusting the axial position of 12 in the housing 11, the bending control assembly 12 can control the bending of the elongated element in real time.

As shown in FIG. 9 , when it is necessary to quickly adjust the axial position of the bending control assembly 12 relative to the housing 11 , it is only necessary to operate the locking member 137 to overcome the elastic force of the second spring 138 acting on the locking member 137 to lock the locking member 137 Moving away from the locking position, the locking member 137 can release the limit of the limiting portion 135b, so that the first transmission member 135 returns to the second state under the drive of the first spring 136, that is, the first thread fit The portion 135a is released from the threaded engagement with the connecting pipe 131 . At this time, since there is no thread fit between the first thread fitting portion 135a and the connecting pipe 131, the movable sleeve 134 can be operated to move quickly relative to the connecting pipe 131 in the axial direction, and then the axis of the control bending assembly 12 relative to the housing 11 can be adjusted. When heading to a location, it can be faster.

In some embodiments, as shown in FIG. 6 to FIG. 8 , the locking member 137 is annular and has a push switch portion 1371 protruding from the movable sleeve 134. The movable sleeve 134 is provided with an avoidance groove 134a. The hollow slot 134a provides a space for the pushing switch part 1371 to move. In this way, when the switch part 1371 is pushed to make the lock member 137 move between the locked position and the unlocked position, the push switch part 1371 moves in the escape groove 134 a without being interfered by the movable sleeve 134 .

The second spring 138 can be sleeved on the outside of the connecting pipe 131, and the two ends of the second spring 138 are fixed relative to the locking member 137 and the movable sleeve 134, so as to provide the locking member 137 to move toward the locked position relative to the movable sleeve 134. Elasticity.

The movable sleeve 134 is provided with a limit piece 139 sleeved on the connecting pipe 131, the limit piece 139 is axially limited relative to the movable sleeve 134, one end of the second spring 138 is connected with the limit piece 139, and the other end is connected with the lock. The stopper 137 is connected. The stopper 139 can be cylindrical, so that not only can the second spring 138 be sleeved on the stopper 139 conveniently, the stopper 139 can be set on the outer circumference of the connecting pipe 131, so that the movable sleeve 134 can be raised relative to the connecting pipe 131. movement flexibility.

It should be noted that, in some implementations, the stopper 139 and the movable sleeve 134 can be connected by a buckle or threaded connection, or integrally formed by injection molding. The connection mode between the limiting member 139 and the movable sleeve 134 is not limited here.

As shown in FIG. 10 and FIG. 11 , in some embodiments, the sleeve 122 not only has an internal thread that is threadedly engaged with the traction member 123 , but also has an external thread. The bending control assembly 12 includes an indicator 126 and a guide rod 127 , the indicator 126 is located on the outside of the sleeve 122 and is threadedly engaged with the sleeve 122 . When the sleeve 122 rotates relative to the inner rod 121, the sleeve 122 is threaded to drive the indicator 126 to move along the guide rod 127, and the housing 11 is provided with a scale window 11c corresponding to the indicator 126, and the scale window 11c is used to read the indicator 126 moves along the guide rod 127, so that the bending control stroke of the bending control assembly 12 can be quickly known through the scale position of the indicator 126 corresponding to the scale window 11c. Specifically, when the sleeve 122 rotates around the inner rod 121, the sleeve 122 can screw the indicator 126 outside the sleeve 122 and the traction member 123 inside the sleeve 122 at the same time, so that the movement stroke of the indicator 126 can The movement stroke of the traction member 123 is known, and then the bending control stroke of the traction member 123 to the elongated element is obtained.

Further, as shown in FIG. 11 , the traction member 123 is located at the distal limit position relative to the sleeve 122 , that is, when the traction member 123 cannot continue to move distally relative to the sleeve 122 , the indicator 126 is also located at the distal limit relative to the sleeve 122 At this time, the scale position corresponding to the indicator 126 can be read through the scale window 11c, and the scale position can be regarded as the initial position of the pulling member 123 relative to the sleeve 122, which does not generate traction on the elongated element.

As shown in Figure 12 and Figure 13, when the bending control knob 124 drives the sleeve 122 to rotate around the inner rod 121, the traction member 123 moves to the proximal limit position relative to the sleeve 122, that is, the traction member 123 cannot continue to move relative to the sleeve. 122 moves proximally. At this time, the indicator 126 will correspond to another scale position of the scale window 11c, so that the position of the scale of the indicator 126 corresponding to the scale window 11c can be used to know the axial displacement of the traction member 123 along the casing 122, so as to know that the elongated element is The bending degree of the traction member 123 under traction.

It should be noted that, in the embodiment where the sleeve 122 not only has an internal thread threaded with the traction member 123, but also has an external thread, the internal thread and the external thread of the sleeve 122 can also be used to drive different The traction structure is used to control the bending operation of the elongated element in different bending directions. For example, as shown in FIG. 14 , another embodiment of the present application is similar to the foregoing embodiments, and the bending control assembly 12 includes an inner rod 121 , a sleeve 122 , a traction member 123 and a bending control knob 124 . As for the structural configuration of the inner rod 121 , the sleeve 122 , the traction member 123 and the bending control knob 124 , reference can be made to the aforementioned configuration, and details will not be repeated here. The difference is that, in the bending control assembly 12 shown in FIG. The structures respectively will move in opposite directions. Specifically, in this embodiment, there may be two traction members 123 of the bending control assembly 12, which are respectively referred to as “first traction member 1231” and “second traction member 1232” for the convenience of description. The first traction member 1231 and the second traction member 1232 cooperate with the internal thread and the external thread of the sleeve 122 respectively, so that when the sleeve 122 rotates, the first traction member 1231 and the second traction member 1232 move in different directions respectively , Then, the sleeve 122 turns in one direction, so that the first pulling member 1231 pulls the elongated element to bend in the first direction, and then the sleeve 122 turns in the other direction, so that the second pulling member 1232 pulls the elongated element toward The second direction is bent, and the second direction is opposite to the first direction, that is, the first pulling member 1231 and the second pulling member 1232 are respectively used to pull the elongated element to bend in opposite directions. Understandably, the bending direction of the elongated element is related to the application point of the traction force it receives, therefore, the elongated element bends in different directions based on the circumferential direction of the elongated element 1231 and the second pulling element 1232 The points of application of force are different. Specifically, the first pulling member 1231 and the second pulling member 1232 are used to connect different positions in the circumferential direction of the elongated element, so as to pull the elongated element to bend in different directions.

In some embodiments, the first direction and the second direction may not be opposite directions, for example, the angle between the first direction and the second direction is not 0, to be exact, the first direction and the second direction are different directions , the elongated element can be bent in different directions by using the above technical solution. For the convenience of understanding, the bending control operation of the elongated element will be described below by taking the first direction and the second direction as opposite directions as an example.

If the rotation direction when the sleeve 122 drives the first traction member 1231 to pull the elongated element is positive rotation, then the rotation direction when the sleeve 122 drives the second traction member 1232 to pull the elongated element is reverse rotation . Based on this, in some embodiments, when using the bending control assembly 12 to perform the bending control operation, the following situations may exist:

The bending control knob 124 rotates forward → drives the sleeve 122 to rotate forward → drives the first traction member 1231 to move toward the proximal end/drives the second traction member 1232 to move toward the distal end. Since the elongated element can only be bent when it is pulled toward the proximal end, through this operation, the first pulling member 1231 can be used to move toward the proximal end to make the elongated element bend, that is, bend toward the first direction.

Alternatively, the bending control knob 124 rotates in the opposite direction → drives the sleeve 122 to reverse direction → drives the first traction member 1231 to move toward the distal end/drives the second traction member 1232 to move toward the proximal end. Since the elongated element can only be bent when it is pulled toward the proximal end, through this operation, the second pulling member 1232 can be used to move toward the proximal end to make the elongated element bend, that is, bend toward the second direction.

It should be noted here that, before operating the bending knob 124 to rotate, if the elongated element has been subjected to traction and is in a bent state, then operating the bending knob 124 changes the bending direction of the elongated element (for example, by bending toward the first direction to adjust the bending direction). When bending toward the second direction), the bending control operation has a process of making the elongated element return to the non-traction process. Since this process is not a process of prompting the elongated element to bend, but the elongated element returns to its natural state, this process The turning stroke of the bending knob 124 in the steering wheel is also referred to as "idle stroke".

Take the process of manipulating the elongated element from bending in the first direction to bending in the second direction as an example. When the bending control knob 124 is operated to rotate in reverse, the bending control knob 124 drives the sleeve 122 to reverse, so that the first pulling member 1231 moves toward the distal end, and the second pulling member 1232 moves toward the proximal end. Since the elongated element recovers from bending in the first direction to no traction force, the first traction member 1231 moves toward the distal end to gradually release the traction on the elongated element until the elongated element returns to no traction force, at this time , continue to operate the bending control knob to rotate in reverse, the first pulling member 1231 will continue to move toward the distal end without pulling the elongated element, and the second pulling member 1232 will move toward the proximal end to pull the elongated element, so that the elongated The element is bent toward the second direction under the traction of the second traction member 1232 . It can be seen that, during the bending operation of the elongated element by the second traction member 1232, since the elongated element recovers from being bent in the first direction to no traction force, it depends on the elastic recovery of the elongated element itself, The travel of the second traction member 1232 toward the proximal end does not drive the elongated element to bend in the second direction, therefore, the reverse rotation of the bending control knob 124 makes the elongated element return to the non-tracted stroke, which is an "idle stroke".

Referring again to Fig. 1 and Fig. 2, the housing 11 includes a first shell 11a and a second shell 11b, the first shell 11a and the second shell 11b are connected to form a housing space for installing the bending control assembly 12 .

The distal end of the housing 11 may be provided with a catheter sheath 11d, and the proximal end of the catheter assembly 20 is connected to the control handle 10 and passes through the catheter sheath 11d. The catheter sheath 11 d is used to prevent dust from the catheter assembly 20 and the distal end of the housing 11 of the control handle 10 , making it difficult for external dust to enter the control handle 10 .

In some implementations, multiple positions of the housing 11 of the control handle 10 are provided with housing fixing rings. For example, the first fixed ring 10 a is located at the distal end of the housing 11 , the second fixed ring 10 b is located at the proximal end of the housing 11 , and the third fixed ring 10 c is provided at a position corresponding to the first transmission member 135 . The setting of these housing fixing rings is to provide stable support for corresponding structural components and improve structural stability, and is not necessary for the control handle 10 to complete its bending control operation. For example, in some implementations, the first shell 11 a and the second shell 11 b of the shell 11 are connected by means of buckle connection, screw connection, thermal fusion connection, etc., so as to ensure the overall structural stability of the shell 11 . In some implementations, the first shell 11 a and the second shell 11 b of the housing 11 may be integrally formed by injection molding, so as to improve the overall structural strength of the housing 11 .

In some embodiments, the bending control knob 124 includes a first cover 124 a and a second cover 124 b, so as to facilitate the installation of the bending control knob 124 on the proximal end of the sleeve 122 . It should be noted that, the first cover 124a and the second cover 124b, and the first cover 124a, the second cover 124b and the sleeve 122 may be fixed by screws, buckles or pins. For example, as shown in FIG. 11 , the outer wall of the sleeve 122 is provided with a protrusion 122a, and the first cover 124a and the second cover 124b are engaged with the protrusion 122a, so that the bending control knob 124 is stably connected with the sleeve 122 . The structure of the bending control knob 124 and the connection manner between the bending control knob 124 and the sleeve 122 are not limited here. As long as the bending control knob 124 can drive the sleeve 122 to rotate relative to the inner rod 121 , and the bending control knob 124 can adapt to the axial movement of the bending control assembly 12 relative to the housing 11 .

In some embodiments, the control handle 10 is also used to actuate the axial movement of the catheter assembly 20 . The catheter assembly 20 may include two or more tubes. For example, as shown in FIG. 15 , the catheter assembly 20 includes a first tube 22 and a second tube 23 , and the second tube 23 is movably sleeved on the first tube 22 . The control handle 10 is used to manipulate the axial movement of the first pipe member 22 and the second pipe member 23 to achieve a certain operation purpose.

It should be noted that the catheter assembly 20 may also include other pipes in addition to the above-mentioned first pipe 22 and second pipe 23. For example, the catheter assembly 20 also includes a third pipe that is sleeved outside the second pipe 23. The third pipe It may be connected to the shell of the control handle 10, and the control handle 10 is used to adjust the axial movement of the first pipe member 22 and the second pipe member 23 in the third pipe member to meet certain operation requirements.

For ease of understanding, the delivery system will be further described by taking the delivery system as an example for implanting implants into the human body to achieve interventional therapy.

Specifically, among the tube parts of the catheter assembly 20, the first tube part 22 is an inner tube, the second tube part 23 is an outer tube, and the third tube part is a delivery sheath. The distal end of the inner tube and the distal end of the outer tube are respectively connected with the distal end and the proximal end of the implant, and the radial expansion of the implant is made by the axial relative movement of the inner tube and the outer tube. The delivery sheath is used to deliver the implant. When the implant is in place, the implant is removed from the delivery sheath and released. During this operation, the inner and outer tubes can be used to align the axis of the implant. The lateral traction enables controllable retraction of the implant for receipt into, or removal of, the implant from the delivery sheath.

The implant can be a vascular stent, a prosthetic valve or an occluder, etc. Correspondingly, the implantation location may be a blood vessel, a heart, or a left atrial appendage.

For the delivery system, the number of pipe fittings and how to arrange the pipe fittings will not be described in detail here. The present application aims to improve the control handle 10, and improve the operation convenience of releasing or withdrawing the implant by improving the axial movement of the control handle 10 such as the above-mentioned tubes.

Specifically, as shown in FIG. 15 and FIG. 16 , the control handle 10 includes a connected first operating portion 14 and a second operating portion 15 . Using the first operating part 14 and the second operating part 15 can make the control handle have a variety of operation modes that can be combined and applied. For example, in a certain operation mode, the axial direction of the first operating part 14 and the second operating part 15 is mutually Limiting, the second operating part 15 can be used to independently operate certain components without causing adverse interference to the operating effect caused by the axial displacement between the first operating part 14 and the second operating part 15 . In another operation mode, the first operating part 14 and the second operating part 15 can move relative to each other in the axial direction, so that the second operating part 15 drives the relevant elements to move axially relative to the first operating part 14, and completes similarly moving the inner The operation of withdrawing the tube and outer tube into the delivery sheath.

In the embodiment of the present application, the first operating part 14 is used to connect with the first pipe part 22 and the second pipe part 23. Understandably, the proximal ends of the first pipe part 22 and the second pipe part 23 are connected with the first operating part 14. connected, the distal ends of the first pipe 22 and the second pipe 23 are located outside the first operating part 14, and the first operating part 14 is used to control the second pipe 23 to move axially relative to the first pipe 22 so as to operate with the first pipe 22 The implant body connected to the distal end of the second tubular member 23, for example, utilizes the axial movement between the first tubular member 22 and the second tubular member 23 to realize the expansion or compression of the implant body, or release the connection of the implant body Instead, the implant is released to the implantation site. What kind of operation purpose is realized by the axial relative movement between the first pipe member 22 and the second pipe member 23 should not be regarded as the structural limitation of the first operation part 14, as long as the first operation part 14 can realize the first pipe part 22 and the second pipe part 23 The axial relative movement of the pipe member 23 is sufficient. To be precise, the control handle 10 in the embodiment of the present application can be sold separately or used together with other components, as long as the structure of the control handle 10 can meet the corresponding operation requirements during use. The first pipe member 22 and the second pipe member 23 are only for the convenience of describing the operating principle of the control handle 10 , and are not intended to limit the application scenarios of the control handle 10 . For example, the axial relative movement between the first pipe member 22 and the second pipe member 23 realized by the first operating part 14 of the control handle 10 may be the aforementioned relative movement between the inner pipe and the outer pipe, or the relative movement between the inner pipe and the outer pipe. A core element (elongated element such as a guide wire, push rod, etc.) located within the inner tube moves axially.

Correspondingly, the operation of the first pipe 22 and the second pipe 23 in the second operating part 15 is only for the convenience of understanding the manipulation principle of the control handle 10 , and does not limit the application scenarios of the control handle 10 . For different implementation objects such as heart valve stents, vascular stents, or balloon-expandable stents, even if the application scenarios are slightly different, when adopting a technical solution consistent with the structure of the control handle 10 of the present application, it is the control handle of the present application. 10 coverage.

Next, the structure of the control handle 10 in the embodiment of the present application will be further described in conjunction with the first pipe member 22 and the second pipe member 23 .

16 to 18, the second operating part 15 includes a main body 151 and a locking switch 152 connected to the main body 151. The setting of the locking switch 152 makes the main body 151 correspond to the locking switch 152. The position forms a locking position, and the locking switch 152 is used to axially limit the first operating part 14 to the locking position relative to the second operating part 15, and the locking switch 152 can release the locking of the first operating part 14, when the lock When the stop switch 152 unlocks the first operating part 14, the first operating part 14 can move axially relative to the second operating part 15, so that the first pipe part 22 and the second pipe part 23 move along the axial direction relative to the second operating part 15 synchronously. axial movement. What needs to be pointed out here is that the synchronous movement of the first pipe 22 and the second pipe 23 means that they move at the same speed at the same time. The relative position remains unchanged, and the second pipe member 23 moves axially relative to the first pipe member 22 only when the first operating part 14 is operated.

In this embodiment, since the locking switch 152 can realize the controllable locking of the first operating part 14, to be precise, when the first operating part 14 moves to the locked position, the locking switch 152 can lock the first operating part 14 Locked at this locking position, so that the first operating part 14 cannot move relative to the second operating part 15, so that the first operating part 14 can be used to stably control the movement of the second pipe 23 relative to the first pipe 22, and the first pipe 22 moves with the The first operating part 14 maintains an axial limit relative to the second operating part 15, avoiding the axial displacement of the first pipe member 22 relative to the second operating part 15 and causing adverse effects on the manipulation results. For example, in some embodiments, When using the axial relative movement of the first tube 22 and the second tube 23 to release the implant, if the first operating part 14 is axially displaced relative to the second operating part 15, the first tube 22 and the second tube 23 The axial displacement of the implant will be driven, which will lead to inaccurate release position of the implant. And so on, for another example, in some other embodiments, when the implant is expanded by using the axial relative movement of the first tubular member 22 and the second tubular member 23, if the first operating part 14 moves closer to the second operating part 15 If the end is displaced, there is a risk that the implant will be retracted into the delivery sheath, which will cause the implant to fail to expand or expand poorly.

When the locking switch 152 unlocks the first operating part 14, the second operating part 15 can be operated to move axially relative to the first operating part 14, so that the first operating part 14 such as the first pipe 22 and the second The two tubes 23 move axially relative to the second operating part 15 synchronously as a whole, so as to achieve the effect of quickly withdrawing these tubes synchronously. Therefore, the operating handle 10 of the present application can conveniently switch the control mode of the control handle 10 by using the locking switch 152, which can realize the relative movement between the operated pipes (such as the first pipe 22 and the second pipe 23), It is also convenient to operate the pipe fittings to move synchronously, so as to improve the operation convenience of the control handle 10 without frequently replacing different operating handles to meet different operating requirements.

As shown in FIG. 17 to FIG. 20 , the first operating part 14 includes a first housing 141 , a guide tube 142 , a second transmission member 143 and a rotating member 144 . The guide tube 142 is connected to the first housing 141, such as a snap connection or screw connection, etc., as long as the guide tube 142 is stably connected to the first housing 141, the second transmission member 143 located in the guide tube 142 can play a role. guide effect. To be precise, the second transmission member 143 can move in the axial direction of the guide tube 142 and is limited by the guide tube 142 in the circumferential direction, so that the second transmission member 143 can only move in the axial direction of the guide tube 142 . The second transmission member 143 is used to connect with the second pipe member 23 , so that when the second transmission member 143 moves axially along the guide pipe 142 , the guide pipe 142 can drive the second pipe member 23 to move axially relative to the first casing 141 .

It should be noted that when the second pipe member 23 is set, the second pipe member 23 is movably passed through the guide member, so that the guide member also builds a movement channel for the second pipe member 23 in the first housing 141, so that the second pipe member 23 The axial movement is more stable.

The rotating member 144 is rotatably sleeved on the outer periphery of the guide tube 142 and axially limited on the guide tube 142 . The rotating member 144 is threadedly engaged with the second transmission member 143 . When the rotating member 144 rotates around the guide pipe 142, the second transmission member 143 moves axially relative to the guide pipe 142 under the screw drive of the rotating member 144, so that the second transmission member 143 drives the second pipe member 23 to move along the direction relative to the first pipe member 22. axial movement.

As shown in Figures 17 and 18, the rotating member 144 includes a threaded pipe 1441, the threaded pipe 1441 has an internal thread, the second transmission member 143 has a second thread fitting portion 143a, and the guide pipe 142 is provided with an escape groove (not shown in the figure). ), the second thread fitting portion 143a passes through the escaping groove, and is threadedly engaged with the internal thread. In this embodiment, the evacuation groove is used to provide a evacuation space for the second thread fitting part 143a, so that the rotating member 144 located outside the guide tube 142 can rotate to realize the thread transmission of the second transmission member 143 located in the guide tube 142 along the Axial movement, so that the second transmission member 143 stably drives the second pipe member 23 to move axially in the guide pipe 142 . It should be noted that both the first pipe member 22 and the guide pipe 142 are axially limited in the first housing 141, so that the second transmission member 143 drives the second pipe member 23 to move axially in the guide pipe 142, realizing the second pipe member 23 moves axially relative to the first pipe member 22 .

Further, the relief groove is parallel to the axial direction of the second transmission member 143, and is used to limit the second thread fitting portion 143a to the guide tube 142 in the circumferential direction, that is, the second thread fitting portion 143a fits with the relief groove , so that the second transmission member 143 cannot rotate around the axial direction of the second transmission member 143, so as to realize the limitation in the circumferential direction between the two. In this embodiment, when the threaded pipe 1441 rotates around the guide pipe 142, the threaded pipe 1441 drives the second threaded fitting part 143a to move along the escaping groove. This rotation of the threaded pipe 1441 realizes that the second threaded fitting part 143a drives the second transmission The axial movement of the member 143 relative to the guide pipe 142 has good stability and high precision, which is conducive to the precise movement of the second pipe member 23 relative to the first pipe member 22 in the axial direction.

The rotating member 144 includes a knob 1442 connected to the outside of the threaded tube 1441 , so that the rotating member 144 can be operated to rotate around the guide tube 142 by using the knob 1442 . The material of the knob 1442 can be metal or plastic, which is not limited here. The knob 1442 can be connected with the threaded tube 1441 by snap fit, or can be connected with the threaded tube 1441 through a connecting piece such as a screw or a pin. The knob 1442 may include a plurality of shells disposed opposite to each other, so as to facilitate the processing of the knob 1442 and facilitate assembly to the rotating member 144 .

As shown in FIG. 21 and FIG. 22 , the first operating part 14 includes a casing 145 , and the casing 145 is axially limited on the first casing 141 . The casing 145 has a first engaging portion 145a, the main body 151 of the second operating portion 15 includes a second housing 1511, the locking switch 152 is movably connected to the second housing 1511, and the locking switch 152 has a second engaging portion 152a. The casing 145 can move axially relative to the second housing 1511 , and when the first operation part 14 is in the locked position, the casing 145 is accommodated in the second casing 1511 and enables the first engaging part 145a to be connected to the second The engaging portion 152 a cooperates to limit the axial movement of the casing 145 relative to the second housing 1511 .

Furthermore, an elastic member 153 is provided between the locking switch 152 and the second housing 1511, and the elastic member 153 is used to drive the locking switch 152 to reset relative to the second housing 1511. When the second engaging portion 152a faces each other, the elastic member 153 makes the first engaging portion 145a cooperate with the second engaging portion 152a. The elastic member 153 may be a spring, or a shrapnel or an elastic rod, which is not limited herein.

The main body 151 of the second operation part 15 includes a support seat 1512, the support seat 1512 is connected with the second housing 1511, the elastic member 153 is mounted on the support seat 1512, and elastically presses the lock switch 152, so that the lock switch 152 has The trend of movement away from the axis of the guide tube 142 .

As shown in FIG. 21 and FIG. 23 , a threaded section 142 a is provided on the peripheral side of the guide tube 142 , and the proximal end of the casing 145 is matched with the threaded section 142 a. With this structure, when installing the casing 145, you only need to push the proximal end of the casing 145 to the threaded section 142a along the guide tube 142, and use the threaded section 142a to thread the casing 145, which has good stability and is easy to install. .

It should be noted that the casing 145 and the guide tube 142 may be directly threaded, or may be indirectly threaded through other structural components. For example, in some embodiments, the first operating part 14 includes a threaded sleeve 146, the threaded sleeve 146 has an internal thread matched with the threaded segment 142a, and a clipping portion 146a located outside the threaded sleeve 146, and the clipping portion 146a is used to make The sleeve shell 145 is connected with the threaded sleeve 146 , so that when the threaded sleeve 146 is screwed with the guide tube 142 , the sleeve shell 145 is stably connected with the guide tube 142 .

The shell 145 can be formed by connecting two or more shells. For example, as shown in FIG. 21 and FIG. 22 , the shell 145 includes a first shell 1451 and a second shell 1452 split axially. The first shell part 1451 and the second shell part 1452 can be connected by a buckle or a screw, and can also be fastened with the fastening part 146 a on the threaded sleeve 146 .

Furthermore, without considering the processing accuracy of the casing 145, the casing 145 is coaxially connected with the guide pipe 142, so that the axis of rotation of the rotating member 144 around the guide pipe 142 is the axis of the casing 145 relative to the second housing 1511. The axis of movement makes the rotation operation and axial movement operation of the control handle 10 smoother.

As shown in FIG. 21 and FIG. 24 , the proximal end of the guide tube 142 is provided with a first limiting portion 142b, and the sheath 145 is sheathed on the outer periphery of the guiding tube 142 to form a second limiting portion 145b. The rotating member 144 is axially limited between the first limiting portion 142b and the second limiting portion 145b, so that the rotating member 144 can only rotate axially relative to the guide tube 142 . When moving in the axial direction, the rotating member 144 also moves in the axial direction relative to the second housing 1511 along with the first housing 141 . The housing 1511 moves in the axial direction.

The outer side of the first limiting portion 142b is connected with a snap connection portion 142c, and the snap connection portion 142c is snap connected with the first housing 141 to achieve a stable connection between the guide tube 142 and the first housing 141 .

Referring again to Fig. 15 and Fig. 16, in some embodiments, the proximal end of the second pipe member 23 is connected to the emptying pipe fixing seat 24, and the first housing 141 is provided with a groove 141a. When the second pipe member 23 is opposite to the first When the first casing 141 moves in the axial direction, the emptying port 24a of the emptying tube fixing seat 24 moves along the groove 141a, and the outer surface of the first casing 141 is provided with a scale area 141b, and the scale area 141b corresponds to the groove 141a , and is used to mark the moving position of the emptying port 24a. Therefore, the axial displacement of the second pipe member 23 relative to the first pipe member 22 can be known according to the moving position of the emptying port 24a.

It should be noted that the emptying port 24 a of the emptying pipe fixing seat 24 is used for externally connecting a vacuum device to empty the second pipe member 23 .

As shown in FIG. 21 and FIG. 25 , the proximal end of the second transmission member 143 is provided with an end cover 143b, and the emptying tube fixing seat 24 is fixed in the end cover 143b, so that the second transmission member 143 and the emptying tube fixing seat 24 The inner second pipe member 23 is connected, so that when the second transmission member 143 moves, it drives the second pipe member 23 to move axially. The emptying port 24a of the emptying pipe fixing seat 24 is exposed from the end cover 143b to be connected with an external vacuum device.

Further, the emptying pipe fixing seat 24 is provided with a sealing ring 25 . Specifically, the sealing ring 25 is stably and closely abutted against the emptying pipe fixing seat 24 through the positioning seat 26 , so that the sealing ring 25 exerts a good sealing performance to facilitate the emptying operation of the second pipe member 23 .

In some embodiments, a limit ring 27 is provided on the end cover 143b, and the limit ring 27 is used to limit the positioning seat 26 to the emptying pipe fixing seat 24, so as to prevent the positioning seat 26 from falling off or loosening from the emptying pipe fixing seat 24. , so as to effectively ensure the positioning effect of the positioning seat 26 on the sealing ring 25 and improve the sealing performance. The limit ring 27 may be snap-fitted to the end cap 143b, may also be threaded to the end cap 143b, or may be glued together with the end cap 143b, which will not be repeated here.

It should be noted that, in the embodiment of the present application, the part of the control handle 10 used for the bending operation may be connected with the axially moving part of the pipe part of the operation catheter assembly 20, for example, referring to Fig. 2 and Fig. 15, As shown in Figures 16 and 17, the connecting pipe 131 is not only connected to the housing 11, but the other end of the connecting pipe 131 is connected to the second operating part 15, so that the part of the control handle 10 used for the bending operation is connected with the operating catheter assembly 20 The axially moving parts of the pipes are connected together, so that the control handle 10 forms a whole, so as to facilitate the use of the control handle 10 to perform bending operations and control the axial direction of pipes such as the first pipe 22 or the second pipe 23 in the catheter assembly 20. move. As shown in FIG. 17 , FIG. 21 and FIG. 22 , the connecting pipe 131 can be connected to the second housing 151 of the second operating part 15 , so that the connecting pipe 131 plays a connecting role in the control handle 10 and lifts the control handle 10 Integral stability between the portion used for controlled bending operations and the portion that operates the axial movement of the tubular member of the catheter assembly 20 .

Whether the connecting pipe 131 connects the housing 11 with the second housing 1511 of the second operation part 15 is not limited here. Specifically, in some embodiments, the part of the control handle 10 used for the bending operation may be arranged separately from the part that moves axially of the tubular member of the operating catheter assembly 20 .

The technical features of the above embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered to be within the range described in this specification.

The above examples only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the inventive concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (20)

A control handle, which is used to control the bending operation of the slender element during interventional treatment, is characterized in that the control handle includes: case; The bending control assembly includes an inner rod, a sleeve, a traction piece and a bending control knob, the inner rod is axially movably arranged in the housing, and the sleeve is rotatably sleeved on the outer periphery of the inner rod , and the sleeve and the inner rod axially limit each other, the traction member is threadedly engaged with the sleeve, the bending control knob is connected with the sleeve, and the bending control knob is used to drive The casing rotates relative to the inner rod, so that the casing screw drives the traction member to move along the axial direction of the inner rod, and when the traction member moves along the axial direction of the inner rod, it can the elongate element creates traction to cause the elongate element to bend; and The moving assembly is used to drive the inner rod to move axially relative to the housing. The control handle according to claim 1, wherein the moving assembly includes a connecting pipe, a connecting rod, a linkage and a movable sleeve, the connecting pipe is connected to the housing, and the connecting rod is movably passed through is connected to the connecting pipe, and is coaxially fixedly connected with the inner rod. The rods are axially limited on the linkage piece, and the movable sleeve is movably connected with the connecting pipe, and is used to drive the linkage piece to move axially relative to the connecting pipe. The control handle according to claim 2, wherein the connecting pipe is provided with a limiting groove, the extending direction of the limiting groove is parallel to the axial direction of the connecting pipe, and the linkage can move along the Limit slot movement. The control handle according to claim 2, wherein the movable sleeve and the linkage member can rotate relative to each other in the circumferential direction, and the movable sleeve can rotate relative to the connecting pipe. When the pipe rotates, the movable sleeve moves axially relative to the connecting pipe. The control handle according to claim 4, wherein the movable sleeve has an internal thread, and the connecting pipe has an external thread, and through the cooperation of the internal thread and the external thread, the movable sleeve is relatively When the connecting pipe rotates, the movable sleeve moves axially relative to the connecting pipe. The control handle according to claim 4, wherein the movable sleeve is movably connected with a first transmission member, the first transmission member has a first thread fitting portion, and the first transmission member can be relatively opposite to the first transmission member. The movable sleeve moves to the first state or the second state, wherein, in the first state, the first threaded fitting portion is screwed to the connecting pipe so that when the movable sleeve rotates relative to the connecting pipe, The first transmission member drives the movable sleeve to move axially relative to the connecting pipe, and in the second state, the first thread fitting portion releases the thread fitting with the connecting pipe. The control handle according to claim 6, wherein a first spring is provided between the first transmission member and the movable sleeve, and the first spring is used to drive the first transmission member to move by the first The state resets movement towards the second state. The control handle according to claim 7, wherein the first transmission member is passed through the movable sleeve in a direction perpendicular to the connecting pipe, the first transmission member has a limiting portion, and the The movable sleeve is provided with a locking part, and the locking part is used to cooperate with the limiting part to limit the first transmission part in the first state. The control handle according to claim 8, wherein the locking member can reciprocate between a locking position and an unlocking position relative to the movable sleeve, wherein when the locking member is in the locking When the lock is in the unlocked position, the lock is held against the limiting part and the first threaded fitting part is in threaded fit with the connecting pipe. When the lock is in the unlocked position, the lock is released The limit of the limit part makes the first transmission member reset and move to the second state driven by the first spring. The control handle according to claim 9, wherein a second spring is provided between the locking member and the movable sleeve, and the second spring is used to drive the locking member to return to the locked position sports. The control handle according to claim 1, wherein the sleeve has external threads, the bending control assembly includes an indicator and a guide rod, the indicator is located on the outside of the sleeve and is connected to the sleeve When the casing rotates relative to the inner rod, the casing thread drives the indicator to move along the guide rod, and the housing is provided with a scale window corresponding to the indicator , the scale window is used to read the moving position of the indicator along the guide rod. The control handle according to claim 1, wherein the sleeve has internal threads and external threads with opposite helical directions, the traction member includes a first traction member and a second traction member, and the first traction member Cooperate with the internal thread of the sleeve, the second traction part cooperates with the external thread of the sleeve, the first traction part and the second traction part are used to connect the elongated element Different locations around the circumference. The control handle according to any one of claims 1-12, wherein the control handle is also used to control the axial movement of the first pipe member and the second pipe member, and the second pipe member is movably sleeved on the The outer periphery of the first pipe, characterized in that the control handle includes: a first operating part, configured to be connected to the first pipe member and the second pipe member, and used to control the axial movement of the second pipe member relative to the first pipe member; The second operation part is connected with the first operation part, the second operation part includes a main body part and a locking switch connected with the main body part, and the position of the main body part corresponds to the locking switch A lock position is formed, the lock switch is used to axially limit the first operating part to the lock position, and the lock switch can unlock the first operation part, when the When the lock switch unlocks the first operating portion, the first operating portion can move axially relative to the second operating portion. The control handle according to claim 13, wherein the first operating part comprises a first housing, a guide tube, a second transmission member and a rotating member, and the guide tube is connected to the first housing , the second transmission member can move axially in the guide pipe, and is limited in the guide pipe in the circumferential direction, the second transmission member is used to connect with the second pipe member, and the rotating member can It is rotatably sleeved on the outer circumference of the guide tube and axially limited on the guide tube. The rotating member is threadedly engaged with the second transmission member. When the rotating member rotates around the guide tube, the The second transmission member moves axially relative to the guide pipe under the screw drive of the rotating member. The control handle according to claim 14, wherein the rotating member includes a threaded pipe, the threaded pipe has an internal thread, the second transmission member has a second thread fitting portion, and the guide pipe is provided with a Empty groove, the escaping groove is parallel to the axial direction of the second transmission member, the second thread fitting part passes through the escaping groove, and is threadedly engaged with the internal thread, when the threaded pipe is wound The guide pipe rotates, and the threaded pipe drives the second thread fitting part to move along the avoidance groove. The control handle according to claim 14, wherein the first operating part comprises a casing, the casing is axially limited on the first casing, and the casing has a first engaging part, The main body part includes a second housing, the locking switch is movably connected with the second housing, the locking switch has a second engaging part, and the casing can be moved along with the second housing. move axially, and when the first operating part is at the locking position, the casing is accommodated in the second housing so that the first engaging part can be connected with the second engaging part cooperate to limit the axial movement of the casing relative to the second casing. The control handle according to claim 16, characterized in that, a threaded section is provided on the peripheral side of the guide tube, and the proximal end of the casing is matched with the threaded section. The control handle according to claim 15, wherein an elastic member is provided between the lock switch and the second housing, and the elastic member is used to drive the lock switch relative to the second housing. The housing moves back and forth, and when the first engaging portion moves to be opposite to the second engaging portion, the elastic member makes the first engaging portion cooperate with the second engaging portion. A delivery system, characterized in that it comprises a catheter assembly and the control handle according to any one of claims 1-11, the proximal end of the catheter assembly is connected to the control handle, and the control handle is used to control The catheter assembly is curved. A delivery system, characterized in that it comprises a catheter assembly and the control handle according to any one of claims 12-19, the proximal end of the catheter assembly is connected to the control handle, the catheter assembly includes the an elongate member, said first tubular member and said second tubular member.

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