CN114404116A - Sheath Bending Handle, Delivery Device and Valve Repair System - Google Patents

Abstract

The invention relates to a sheath bending adjusting handle, a conveying device and a valve repairing system, wherein the sheath bending adjusting handle is used for pulling a pulling line of a sheath so as to bend the distal end of the sheath towards a set direction; the winding wheel is sleeved on the main shaft, at least one winding groove is circumferentially and annularly arranged on the outer wheel wall of the winding wheel, at least one group of intersecting and communicated through wire holes and wire locking holes are arranged on the winding wheel in the direction perpendicular to the axial direction, the part of the pulling wire extending out of the sheath tube is wound in the winding groove, and the part of the pulling wire close to the end part extends into the through wire holes; the line pressing member is arranged in the lock line hole and compresses the traction line. The sheath bending adjusting handle provided by the invention can ensure the stability of the pulling line and avoid the pulling line from falling off or breaking in the sheath bending adjusting handle.

Description

Sheath Bending Handle, Delivery Device and Valve Repair System

technical field

The invention belongs to the technical field of medical devices, and in particular relates to a sheath tube bending handle, a delivery device and a valve repair system.

Background technique

Interventional therapy is a minimally invasive treatment method, and its application fields are becoming wider and wider. Usually, a sheath is introduced into the patient under the guidance of medical imaging equipment, and a passage is established through the sheath to deliver implants such as drugs or instruments. For example, when used in the field of valve repair, the distal end of the sheath can be connected to and delivered a valve clamp, an artificial valve, and the like.

Due to the complex structure of the human heart and blood vessels, in order to ensure that the sheath can pass smoothly and that the implant can reach the accurate setting position, it is usually necessary to make the tube segment near the distal end of the sheath into a structure that can be bent independently, and set a retractor. The pull wire is connected with the bendable part by the distal end of the pull wire, and the proximal end of the pull wire is pulled by the operator, thereby driving the distal end of the sheath to bend.

The sheath tube bending handle in the related art is used to pull the puller wire, but because the puller wire is pulled by the distal end of the sheath tube in the state where the distal end of the sheath tube is bent, the puller wire connected inside the handle is pulled close to the handle. The end is unstable, so during the use of the sheath bending handle, there is a risk of the puller wire falling off or even breaking, which easily affects the surgical effect.

SUMMARY OF THE INVENTION

The purpose of the present invention is to at least solve the problem that the puller wire may fall off or break in the sheath bending handle. This purpose is achieved through the following technical solutions:

A first aspect of the present invention provides a sheath tube bending handle. The sheath tube bending handle is used to pull the puller wire of the sheath tube to bend the distal end of the sheath tube in a set direction. The bending handle includes at least one set of driving components and at least one winding locking mechanism, and the winding locking mechanism includes:

a main shaft, the main shaft is drivingly connected with the driving assembly;

The winding wheel is sleeved on the main shaft, the outer wheel wall of the winding wheel is provided with at least one winding groove along the circumferential direction, and the winding wheel is provided with at least one winding groove along the direction perpendicular to the axial direction. A set of intersecting and communicating through-wire holes and lock-wire holes, the part of the pulling wire extending from the sheath tube is wound around the wire winding groove, and the part of the pulling wire near the end extends into the wire in the through hole;

A wire pressing member, which is arranged in the locking wire hole and presses the pulling wire.

In the sheath tube bending handle proposed in the embodiment of the present invention, the pulling wire is wound and stored on the winding wheel by setting the wire winding groove, and on the basis of ensuring that the pulling wire can be pulled, the pulling wire is improved during the pulling process. The stability of the pulling wire can be prevented, and the pulling wire can be prevented from falling off; by setting the wire hole on the winding wheel, the pulling wire can extend into the wire hole after winding, which further improves the stability of the pulling wire and avoids the pulling wire. The exposure of the proximal end is interfered by other components; by setting the wire locking hole and the wire pressing member, the part of the pulling wire located in the through wire hole is pressed and fixed, thereby improving the reliability of the connection between the pulling wire and the reel, and reducing the pulling force Therefore, the sheath tube bending handle proposed in this embodiment can ensure the stability of the pulling wire, and solve the problem that the pulling wire may fall off or break in the sheath tube bending handle.

In addition, the sheath tube bending handle proposed according to the embodiment of the present invention may also have the following technical features:

In some embodiments of the present invention, along the axial direction of the winding wheel, the width of the winding groove is greater than or equal to the outer diameter of the sheath tube to accommodate a part of the tube section of the sheath tube, and the winding groove has a width greater than or equal to the outer diameter of the sheath tube. The groove bottom surface of the wire groove is in contact with and/or conforms to the shape of the side wall of the sheath tube.

In some embodiments of the present invention, the outer wheel wall of the reel is further provided with a sheath tube avoidance groove, and along the axial direction of the reel, the width of the sheath tube avoidance groove is greater than or equal to the sheath tube The outer diameter of the sheath tube is so as to accommodate a part of the tube section of the sheath tube, and the bottom surface of the sheath tube escape groove is in contact with and/or conforms to the shape of the side wall of the sheath tube.

In some embodiments of the present invention, two wire winding grooves are provided, and along the axial direction of the wire reel, the two wire winding grooves are respectively located on both sides of the sheath tube avoidance groove.

In some embodiments of the present invention, the wire through hole and the lock wire hole respectively penetrate the wire reel from the groove bottom of the wire wire groove along the radial direction of the wire reel.

In some embodiments of the present invention, the axis of the lock wire hole is perpendicular to the axis of the through wire hole.

In some embodiments of the present invention, at least one set of the wire pressing members is provided, the number of each set of the wire pressing members is two, and the two wire pressing members are respectively separated from both ends of the wire locking hole Pass through the locking wire hole and abut against each other to clamp the pulling wire.

In some embodiments of the present invention, at least one set of intersecting and communicating first shaft holes and second shaft holes are disposed radially through the main shaft, and the first shaft holes are coaxial with the through-line holes The second shaft hole is arranged coaxially with the locking wire hole, and the inner wall of the second shaft hole is provided with a thread.

In some embodiments of the present invention, the wire pressing member is configured as a stud, and/or the end surface of the wire pressing member used for pressing the pulling wire is provided with concave-convex stripes.

In some embodiments of the present invention, a baffle is further provided on the winding wheel, and the baffle is located at a notch of the wire winding slot to block the pulling wire.

In some embodiments of the present invention, the drive assembly includes a knob, a worm and a worm wheel connected in sequence, the worm wheel is connected to the main shaft, and the sheath tube bending handle further includes a housing and a The sheath tube fixing assembly and the limiting mechanism in the , the sheath tube fixing assembly is used for fixing the sheath tube, and the limiting mechanism is used for limiting the rotation of the reel within a set range and/or in a set direction.

A second aspect of the present invention provides a delivery device, the delivery device includes at least one sheath tube and at least one sheath tube bending handle according to any of the above embodiments, the sheath tube is penetrated through a portion near the proximal end in the sheath tube bending handle.

The delivery device proposed by the present invention has the same advantages as the above-mentioned sheath tube bending handle, which will not be repeated here.

A third aspect of the present invention provides a valve repair system, the valve repair system includes a valve clamp and the delivery device according to the above embodiment, the delivery device is used to deliver the valve clamp, the The distal end of the sheath is detachably connected to the valve clamp.

The valve repair system proposed by the present invention has the same advantages as the above-mentioned sheath tube bending handle and delivery device, which will not be repeated here.

Description of drawings

The accompanying drawings in the embodiments are briefly introduced below, and those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

1 is a schematic structural diagram of a sheath tube bending handle according to Embodiment 1 of the present invention;

Fig. 2 is the partial structural schematic diagram of the sheath tube bending handle according to the first embodiment of the present invention;

3 is an exploded view of the structure of the sheath tube bending handle according to Embodiment 1 of the present invention;

4 is a partial structural schematic diagram of the sheath tube bending handle including the top cover according to the first embodiment of the present invention;

5 is a schematic structural diagram of a sheath tube fixing assembly in a sheath tube bending handle according to an embodiment of the present invention;

6 is a cross-sectional view of the sheath tube fixing assembly shown in FIG. 5;

7 is another structural schematic diagram of a sheath tube fixing assembly in a sheath tube bending handle according to an embodiment of the present invention;

Figure 8 is a cross-sectional view of the sheath tube fixing assembly shown in Figure 7;

9 is a schematic structural diagram of a winding locking mechanism in a sheath tube bending handle according to an embodiment of the present invention;

10 is another structural schematic diagram of the winding locking mechanism in the sheath tube bending handle according to Embodiment 1 of the present invention;

Figure 11 is a front view of the winding wheel and the main shaft in the winding locking mechanism shown in Figure 9;

Fig. 12 is a kind of sectional view of A-A direction in Fig. 11;

Fig. 13 is another sectional view of the direction A-A in Fig. 11;

Figure 14 is a front view of the winding locking mechanism and the pulling wire shown in Figure 9;

Figure 15 is a cross-sectional view of the direction B-B in Figure 14;

16 is a partial structural schematic diagram of the sheath tube bending handle according to Embodiment 2 of the present invention;

17 is a schematic structural diagram of the sheath tube bending handle according to Embodiment 3 of the present invention;

18 is a partial structural schematic diagram 1 of the sheath tube bending handle according to Embodiment 3 of the present invention;

19 is a partial structural schematic diagram of the sheath tube bending handle including the top cover according to Embodiment 3 of the present invention;

20 is a second partial structural schematic diagram of the sheath tube bending handle according to Embodiment 3 of the present invention;

21 is a schematic structural diagram of a conveying device according to an embodiment of the present invention;

FIG. 22 is a schematic structural diagram of a valve repair system according to an embodiment of the present invention.

The symbols in the accompanying drawings are indicated as follows:

1000, delivery device; 2000, sheath; 3000, puller wire; 3001, first puller wire; 3002, second puller wire; 3003, third puller wire; 4000, valve clamp; 5000, valve repair the system;

100. Sheath tube bending handle;

10. Housing; 11. Top cover; 12. Bottom case; 101. Sheath channel; 102. Mounting seat; 1021. First groove; 1022, Second groove;

20, winding locking mechanism; 201, first winding locking mechanism; 202, second winding locking mechanism; 21, main shaft; 2101, first main shaft; 2102, second main shaft; 211, first shaft hole ; 212, the second shaft hole; 22, the winding wheel; 2201, the first winding wheel; 2202, the second winding wheel; 221, the winding slot; 2211, the first winding slot; 2212, the second winding slot; 2213, the third winding slot; 222, the sheath tube avoidance slot; 223, the wire hole; 224, the lock wire hole; 23, the wire crimping member;

30, drive assembly; 301, first drive assembly; 302, second drive assembly; 31, knob; 32, worm; 33, worm wheel;

40. Sheath tube fixing assembly; 41, pressing ring; 42, fixing flange; 421, central hole; 43, shrinking ring; 431, supporting ring; 432, movable piece; 44, abutting piece;

50, bearing; 60, pointer; 70, limit mechanism; 701, first limit mechanism; 702, second limit mechanism; 71, rotating member; 711, first rotating rod; 712, second rotating rod; 72 , Limit plate; 80, Thread blocking lever; 90, Gear group.

Detailed ways

As described in the background art, in the process of controlling the bending of the sheath tube in the existing sheath tube bending handle, due to the reverse force of the sheath tube, the puller wire is easy to fall off or break in the handle, which affects the operation effect and even has safety problems. Risk, in this regard, the present invention proposes a sheath tube bending handle, a main shaft and a winding wheel are arranged in the handle, and the pulling wire extending from the sheath tube is wound in the winding groove of the winding wheel, so as to improve the traction The stability of the pulling wire during the pulling process reduces the possibility of falling off. At the same time, the proximal part of the pulling wire is placed by setting a wire hole on the reel, and the locking wire hole and the wire pressing member are fixed at the wire hole. Therefore, the reliability of the connection between the pulling wire and the reel is improved, and the possibility of breakage is reduced. It can be seen that the sheath tube bending handle proposed by the present invention can ensure the stability of the pulling wire and avoid pulling Wire comes off or breaks in the handle.

The following will be combined with the accompanying drawings in the embodiments of the present invention. The terms used herein are only for the purpose of describing specific example embodiments, and should not be construed as limiting the present invention. features, and do not preclude the presence of other features; the terms "first" and "second" do not imply a sequence or order; the terms "inner", "outer", "above", "below" are only for convenience in describing the drawings The illustrated relationship of one feature to another does not indicate that it must have a particular orientation. It should be noted that in the field of interventional medical devices, the proximal end refers to the end closer to the operator, the distal end refers to the end farther away from the operator; the axial direction refers to the center of the distal end of the medical device parallel to the natural state. In the description of the present invention, the above-mentioned definition is only for the convenience of expression, and should not be construed as a limitation of the present invention.

Referring to FIGS. 1 to 3 , and referring to FIGS. 9 to 15 , an embodiment of the present invention provides a sheath tube bending handle 100 . The sheath tube bending handle 100 is used to pull the puller wire 3000 of the sheath tube 2000 to The distal end of the sheath tube 2000 is bent toward a set direction. The sheath tube bending handle 100 proposed in this embodiment includes at least one set of driving assemblies 30 and at least one winding locking mechanism 20 , and the winding locking mechanism 20 includes a main shaft 21 , winding wheel 22 and wire pressing member 23, the main shaft 21 is connected with the drive assembly 30 in a driving manner; the winding wheel 22 is sleeved on the main shaft 21, and the outer wheel wall of the winding wheel 22 is provided with at least one winding groove 221 along the circumferential ring, around the The wire pulley 22 is provided with at least one set of intersecting and communicating through wire holes 223 and locking wire holes 224 along the direction perpendicular to the axial direction. A part of the wire segment near the end of the wire 3000 extends into the wire hole 223 ; the wire pressing member 23 is arranged in the wire locking hole 224 and presses the pulling wire 3000 .

The sheath tube bending handle 100 proposed in this embodiment can be used in the delivery device 1000. The sheath tube bending handle 100 is used in cooperation with one or more sheath tubes 2000, so as to make the distal end of the sheath tube 2000 move toward the setting according to requirements. Bending direction, it is understood that the distal end of the sheath tube 2000 has a bendable tube section, the sheath tube 2000 is provided with a puller wire 3000 connected to the bendable tube section, and the distal end of the puller wire 3000 is connected to the bendable tube section, and the puller wire The proximal end of the 3000 is pulled by the operator. In this embodiment, the driving assembly 30 drives the winding locking mechanism 20 to rotate, thereby pulling the pulling wire 3000 .

In this embodiment, the pulling wire 3000 is wound and stored on the winding wheel 22 by arranging the wire winding groove 221. On the basis of ensuring that the pulling wire 3000 can be pulled, the stability of the pulling wire 3000 during the pulling process is improved. Prevent the pulling wire 3000 from falling off; by setting the through wire hole 223 on the reel 22, the pulling wire 3000 can be stretched into the through wire hole 223 after winding, which further improves the stability of the pulling wire 3000 and avoids pulling the pulling wire 3000. The exposed proximal end of the pulling wire 3000 is interfered by other components; by setting the locking wire hole 224 and the wire pressing member 23, the part of the pulling wire 3000 located in the through wire hole 223 is pressed and fixed, thereby improving the connection between the pulling wire 3000 and the winding wheel 22 The reliability of the connection, compared with gluing, this method reduces the possibility of the puller wire 3000 breaking. It can be seen that the sheath tube bending handle 100 proposed in this embodiment can ensure the stability of the puller wire 3000 To prevent the puller wire 3000 from falling off or breaking in the sheath bending handle 100.

On the basis of the above embodiments, the sheath tube bending handle 100 proposed in this embodiment includes a housing 10 , at least one winding locking mechanism 20 and at least one set of driving assemblies 30 , and a sheath tube channel 101 is provided on the housing 10 , so that the sheath tube 2000 is partially penetrated in the casing 10; the winding locking mechanism 20 is arranged in the casing 10, each group of driving assemblies 30 is matched with a winding locking mechanism 20, and the driving assemblies 30 include sequentially connected The knob 31, the worm 32 and the worm wheel 33, the worm wheel 33 is connected with the main shaft 21 to drive the reel 22 to rotate, during use, the knob 31 can drive the worm 32 to rotate, and the worm wheel 33 connected to the worm 32 can drive the reel 32 22 is rotated, thereby pulling the puller wire 3000. This embodiment utilizes the restraining function of the reel 22 on the pulling wire 3000, combined with the self-locking function of the worm gear mechanism, so that the operator only needs to rotate a knob 31 to pull the pulling wire 3000, and the rotation can be stopped at any time during this process. There is no need to lock the puller wire 3000 separately to ensure that the puller wire 3000 will not be pulled back by the pulling force of the sheath tube 2000, that is, the operator can only control the bending degree of the sheath tube 2000 through the rotation angle of the knob 31, and can When the rotation of the knob 31 is stopped, the sheath tube 2000 is maintained in a certain bending state. Therefore, the sheath tube bending handle 100 proposed in this embodiment is simple and compact in structure, small in overall volume and light in weight, which improves the operator's use experience, and the operation It is simple and convenient, and the pulling wire 3000 has good stability during use, which is beneficial to improve the surgical effect.

Please continue to refer to FIG. 2 , FIG. 3 and FIG. 4 , a housing space is formed inside the housing 10 , and part of the tube section of the sheath tube 2000 , the winding locking mechanism 20 , and the worm gear 33 and the worm 32 are placed in the housing 10 . In this embodiment, the housing The body 10 may include a top cover 11 and a bottom case 12, the top cover 11 and the bottom case 12 are buckled and connected, and the connection method may be snap connection, welding or connection with fasteners such as bolts, screws, etc., and the top cover 11 and the bottom case. The way of connecting 12 by means of fasteners not only facilitates the manufacture and assembly of the casing 10 , but also facilitates subsequent maintenance or replacement of components inside the casing 10 . Further, the top cover 11 and the bottom case 12 can be respectively molded by three-dimensional printing or injection molding, and the outer walls of the top cover 11 and the bottom case 12 can also be provided with concave parts, so as to facilitate the operator to hold during use. This embodiment The shape and forming method of the housing 10 are not particularly limited.

Further, please continue to refer to FIG. 1 and FIG. 4 , in this embodiment, the casing 10 is provided with a sheath tube 101 for the sheath tube 2000 to pass through. It is understandable that the tube section near the proximal end of the sheath tube 2000 needs to be located in the sheath tube In the bending handle 100, two sheath tube channels 101 are provided, the two sheath tube channels 101 are respectively arranged on two opposite side walls of the housing 10, and the sheath tube 2000 extends into the housing from one of the sheath tube channels 101 10. Protruding from another sheath tube channel 101, thereby improving the stability of the proximal part of the sheath tube 2000 and avoiding excessive shaking of the sheath tube 2000. In this embodiment, the sheath tube channel 101 may be set as a circular through hole matching the sheath tube 2000, or may be set as a through hole of other shapes.

Further, referring to FIG. 2 and FIG. 3 , in some embodiments of the present invention, the sheath tube bending handle 100 further includes a sheath tube fixing component 40 , and the sheath tube fixing component 40 is connected to the housing 10 and can be tightly held The sheath tube 2000 prevents the sheath tube 2000 from moving or rotating relative to the housing 10, and is used to further fix the sheath tube 2000 and improve the stability of the sheath tube 2000. The number of the sheath tube fixing components 40 can be set to one set or two sets Illustratively, according to the above-mentioned embodiment, there are two sheath tube channels 101 , and one set of sheath tube fixing components 40 may be provided, which is arranged close to one of the sheath tube channels 101 , thereby improving the stability of the sheath tube 2000 .

There are various structures of the sheath tube fixing assembly 40 in this embodiment. In an optional implementation, please continue to refer to FIG. 2 and FIG. 3 , and refer to FIG. 5 and FIG. 6 in combination. Including two oppositely arranged pressure rings 41, the two pressure rings 41 are fastened to connect and hold the sheath tube 2000 tightly, so that the sheath tube 2000 cannot be moved in the axial direction and cannot be rotated, which is beneficial to the sheath tube 2000 and the extension from the sheath tube 2000. Out of the puller wire 3000 is stabilized. Exemplarily, the structures of the two pressure rings 41 are the same. As shown in FIG. 6 , the cross-sectional shape of the part where the pressure ring 41 hugs the sheath tube 2000 is an arc or a semicircle, and two sides of the pressure ring 41 are extended with connections. When the two pressure rings 41 are buckled and connected, the connecting plates of the two pressure rings 41 on the same side are aligned and abutted. On this basis, the two connecting plates can be connected by welding, or by using fasteners The two connecting plates connect the two pressing rings 41 and hold the sheath tube 2000 tightly.

On the basis of the above embodiment, please refer to FIG. 4 , the housing 10 may also be provided with a mounting seat 102 for installing the sheath tube fixing assembly 40 , and the mounting seat 102 may be provided in the housing 10 or in the housing 10, and the mounting seat 102 is formed on the housing 10 by integral molding. When the housing 10 includes the top cover 11 and the bottom case 12 , the mounting seat 102 may be provided on the top cover 11 or the bottom case 12 , or both the top cover 11 and the bottom case 12 are provided with the mounting seat 102 . Exemplarily, the top cover 11 is provided with a first mounting seat near the bottom case 12, the bottom case 12 is provided with a second mounting seat near the top cover 11, and the top cover 11 is located on the side wall and bottom of the first mounting seat. The side walls of the casing 12 close to the second mounting seat are respectively provided with concave portions. Referring to FIG. 3 , when the top cover 11 and the bottom case 12 are fastened together, the two concave portions enclose the sheath tube channel 101 .

On the basis of the above embodiment, please continue to refer to FIG. 4 , FIG. 5 and FIG. 6 , when the sheath tube fixing assembly 40 includes two pressure rings 41 , the two pressure rings 41 are connected by fasteners, and the fasteners can for screws or bolts. On this basis, the first mounting seat and the second mounting seat are respectively provided with first grooves 1021 matching the pressing ring 41 , and the two first grooves 1021 are arranged opposite to each other. The shapes of the rings 41 are adapted, and each pressing ring 41 is at least partially embedded in the first groove 1021 . During the assembly process, the two pressing rings 41 can be connected to the sheath tube 2000 first, and then placed on the first groove 1021 of the first mounting seat or the second mounting seat. Afterwards, the two first grooves 1021 are snapped together to form an accommodating space for accommodating the two pressing rings 41, so that part of the tube section of the sheath tube 2000 and the sheath tube fixing assembly 40 are fixed in the housing 10. This arrangement is convenient for assembly, and The stability of the sheath tube fixing assembly 40 and the sheath tube 2000 is further improved.

Further, please continue to refer to FIG. 4 , the mounting seat 102 is further provided with a second groove 1022, and the second groove 1022 is used for accommodating the end of the fastener. A mounting seat can also be arranged on the second mounting seat, or the first mounting seat and the second mounting seat are respectively provided with second grooves 1022, and the two second grooves 1022 are arranged opposite to each other and are respectively connected with the fasteners. Matching the ends of the fasteners can not only accommodate the ends of the fasteners, connect the sheath tube fixing assembly 40 with the housing 10, but also prevent the sheath tube fixing assembly 40 from shaking on the mounting seat 102, so that the second groove 1022 The setting of ' ' further improves the stability of the sheath tube fixing assembly 40 , thereby improving the stability of the sheath tube 2000 . In addition, the sheath tube fixing assembly 40 and the housing 10 can be further welded to improve the connection reliability, for example, the pressure ring 41 is welded with the first groove 1021, or the fastener is welded with the second groove 1022. This is not specifically limited.

In another optional embodiment, please refer to FIG. 7 and FIG. 8 , each set of sheath tube fixing assemblies 40 includes a fixing flange 42 and a retractable member 43 . In this embodiment, the fixing flange 42 is at least partially installed on the In the sheath tube channel 101, the sheath tube channel 101 can be matched with, for example, an interference fit. Referring to FIG. 20, the shape of the sheath tube channel 101 can be matched with the outer contour shape of the fixing flange 42, so as to facilitate installation and operation. Improve connection stability. As shown in FIG. 8 , the fixing flange 42 has a central hole 421 , the sheath tube 2000 passes through the central hole 421 , the retractable member 43 is connected in the central hole 421 and sleeved on the sheath tube 2000 , and the retractable member 43 is in a retracted state When holding the sheath tube 2000 tightly, the sheath tube 2000 is prevented from moving and rotating in the axial direction.

Exemplarily, in this embodiment, the retractable member 43 includes a support ring 431 and a plurality of movable pieces 432 connected to the support ring 431. The movable pieces 432 extend in the axial direction and can be arranged around the connection with the support ring 431. It is understood that when the plurality of movable pieces 432 are rotated and folded in the direction of the axis of the support ring 431, the sheath tube 2000 can be held tightly. On this basis, in this embodiment, the central hole 421 of the fixing flange 42 can be set in a shape that squeezes the contractile member 43 to make it close, or the central hole 421 can be set in the central hole 421 for squeezing the contractile member 43 to make it close. During the assembly process, the retractable member 43 can be connected to the sheath tube 2000 first, and then penetrated into the central hole 421 , so that the retractable member 43 is squeezed and contracted to realize the fixation of the sheath tube 2000 .

In an optional embodiment, the central hole 421 includes a tapered hole section, the retractable member 43 is movably disposed in the tapered hole section of the central hole 421, and the support ring 431 of the retractable member 43 is close to the tapered hole The big end of the segment, the end of the movable piece 432 away from the support ring 431 is close to the small end of the tapered hole segment. It should be noted that the big end of the tapered hole segment refers to the end with a larger diameter, and the small end refers to the the end with the smaller diameter. Therefore, when the retractable member 43 moves toward the small end, the movable piece 432 is squeezed by the inner wall of the tapered hole segment and shrinks inwardly, so as to hold the sheath tube 2000 tightly, so that the sheath tube 2000 cannot move in the axial direction and cannot rotate.

On the basis of the above-mentioned embodiment, please continue to refer to FIG. 8 , the sheath tube fixing assembly 40 further includes an abutment member 44 , which is also arranged in the central hole 421 , and the abutment member 44 has an axial through hole. On this basis, the sheath tube 2000 pierced through the central hole 421 is partially located in the retractable member 43 and partially located in the abutting member 44 . On this basis, the abutment piece 44 can press against the retractable member 43 in the axial direction, so as to urge the retractable member 43 to move toward the small end. Exemplarily, the abutting member 44 may be configured as a screw, the outer side wall of the abutting member 44 may be provided with an external thread, the inner wall of the central hole 421 is correspondingly provided with an internal thread, and at least part of the external thread is located at the end of the tapered hole section. The big end side, thus, during the assembly process, the abutting piece 44 is screwed into the central hole 421, and when the abutting piece 44 moves to the set position in the central hole 421, the end of the abutting piece 44 and the retractable The support ring 431 of the member 43 abuts in the axial direction, and then exerts a thrust on the retractable member 43 when it continues to move, so that the retractable member 43 moves toward the small end of the tapered hole segment, so that the movable piece 432 is squeezed and closed , even if the retractable member 43 is retracted to hug the sheath 2000. To sum up, in this embodiment, the fixed flange 42, the retractable member 43 and the abutting member 44 are combined to prevent the sheath tube 2000 from moving relative to the housing 10, thereby improving the stability of the sheath tube 2000. During the use of the 100, the stability of the pulling wire 3000 is guaranteed.

Please continue to refer to FIGS. 1 , 2 and 3 , for example, the drive assembly 30 includes a knob 31 , a worm 32 and a worm wheel 33 connected in sequence, the knob 31 is located outside the housing 10 , and the worm 32 and the worm wheel 33 are located inside the housing 10 , the side of the knob 31 facing the housing 10 is provided with a connecting boss, the connecting boss is provided with a connecting hole, the central shaft part of the worm 32 extends out of the housing 10, and extends into the connecting hole to connect with the knob 31, the center The shaft and the connecting hole can be set as an interference fit, or can be connected by fasteners. In an optional embodiment, the connecting boss is provided with threaded holes in the radial direction, so that screws or bolts can be used to extend from the threaded holes to make abutment or snap connection with the central axis of the worm 32, thereby The reliability of the connection between the worm 32 and the knob 31 is improved.

On the basis of the above-mentioned embodiment, as shown in FIG. 2 , the worm wheel 33 is rotatably arranged in the housing 10 , the two ends of the worm 32 are respectively rotatably connected to the side wall of the housing 10 , and the helical tooth portion of the worm 32 is connected to the worm wheel. 33 meshes, and the worm wheel 33 rotates under the drive of the worm 32. On this basis, the worm wheel 33 is sleeved on the main shaft 21 of the winding locking mechanism 20, and can drive the main shaft 21 and the winding wheel 22 to rotate, thus, the main shaft 21 . The winding wheel 22 and the worm wheel 33 are coaxially arranged, with a compact structure, saving installation space, and further reducing the overall volume of the sheath tube bending handle 100, and the worm wheel 33 and the worm 32 are driven by a self-locking function, which ensures the winding Stability of locking mechanism 20 and puller wire 3000.

Further, in some embodiments of the present invention, the sheath tube bending handle 100 further includes a plurality of bearings 50 , for example, please continue to refer to FIG. 2 , the main shaft 21 and the worm 32 of the winding locking mechanism 20 are respectively vertical The sheath tube 2000 is arranged in the casing 10 in the direction of the axis, the two ends of each main shaft 21 are respectively connected with bearings 50, and the two ends of each worm 32 are also respectively connected with the bearings 50. Correspondingly, the casing 10 is provided with a bearing 50. There are a plurality of mounting holes for mounting the bearing 50. In this embodiment, the bearing 50 is provided to improve the stability of the main shaft 21 and the worm 32, reduce the resistance when the main shaft 21 and the worm 32 rotate, and thus improve the stability of the sheath tube bending handle 100. User experience and turning efficiency.

During the use of the sheath tube bending handle 100, the operator turns the knob 31 to drive the worm 32 to rotate, the worm 32 drives the worm wheel 33 meshed with it to rotate, and the worm wheel 33 drives the main shaft 21 of the winding locking mechanism 20 arranged coaxially with it. The puller wire 3000 connected to the reel 22 is then rotated, and the distal end of the sheath tube 2000 is bent. In this embodiment, the winding wheel 22 can receive and connect the pulling wire 3000. It is understood that the structure of the winding locking mechanism 20 is different according to the number of the matching pulling wire 3000.

Exemplarily, in some embodiments of the present invention, please continue to refer to FIG. 2 and FIG. 3 , the winding locking mechanism 20 includes a main shaft 21 , a winding wheel 22 and a wire pressing member 23 , and the main shaft 21 is drivingly connected with the driving assembly 30 . , and can be rotated under the drive of the drive assembly 30, the reel 22 is sleeved on the main shaft 21 and rotates with the main shaft 21, the outer wall of the reel 22 is provided with at least one winding groove 221 along the circumferential direction, and the reel 22 is along the The direction perpendicular to the axial direction is provided with at least one set of intersecting and communicating through wire holes 223 and locking wire holes 224. The part of the pulling wire 3000 extending from the sheath tube 2000 is wound around the wire winding groove 221, and the pulling wire 3000 is close to the wire winding slot 221. Part of the wire segment at the end extends into the wire hole 223 ; the wire pressing member 23 is arranged in the wire locking hole 224 and presses the pulling wire 3000 .

On the basis of the above-mentioned embodiment, please continue to refer to FIG. 2 and FIG. 3 , the winding wheel 22 may be provided with one winding slot 221 or a plurality of winding slots 221 , and the number of the winding slots 221 depends on the pulling force The number of pulling wires 3000 is set, when the winding wheel 22 is provided with a winding slot 221, the winding wheel 22 is used for winding a pulling wire 3000; when the winding wheel 22 is provided with two winding wires When the slot 221 is used, the reel 22 is used for two pulling wires 3000 to be wound around, and the two pulling wires 3000 are respectively wound in the two winding slots 221 in opposite directions.

Further, along the axial direction of the winding wheel 22, the width of the winding groove 221 can be set according to actual needs. Therefore, as shown in FIG. 2 , the sheath tube 2000 inserted in the housing 10 can pass through the winding groove 221 in a direction parallel to the tangential direction of the reel 22 , that is, the sheath tube 2000 is partially located in the winding In the groove 221, further, the outer wall of the sheath tube 2000 can be in contact with the groove bottom surface of the wire winding groove 221 or maintain a small distance, that is, the busbar of the sheath tube 2000 is tangent or approximately tangent to the groove bottom surface; further, The groove bottom surface of the wire winding groove 221 can be set as an arc surface conforming to the shape of the outer wall of the sheath tube 2000 to form a larger accommodating space, so that the sheath tube 2000 can be contacted with the groove bottom surface or maintain a small distance. Such an arrangement can keep the puller wire 3000 extending from the sheath tube 2000 as tangent to or approximately tangent to the pulley 22 as possible when it is wound on the pulley 22, preventing the puller wire 3000 from being pulled. Scratches to the outer wall of the sheath 2000.

In some embodiments of the present invention, one or more baffles may also be provided on the winding wheel 22, and the baffles are located at the notch of the winding groove 221 to block the pulling wire 3000. For example, due to The winding slot 221 is a recess provided on the outer wheel wall of the winding wheel 22, so along the axial direction of the winding wheel 22, the parts on both sides of the winding slot 221 are bosses relative to the winding slot 221. Based on this The baffles can be integrally formed on the bosses on both sides of the winding slot 221, and the baffles extend toward the winding slot 221, so as to block part of the winding slot 221. When the winding wheel 22 faces the pulling wire 3000 When the puller wire 3000 in the winding slot 221 is rotated in the opposite direction of the winding direction, the puller wire 3000 in the wire winding groove 221 may loosen.

On the basis of the above embodiment, the wire pressing member 23 extends into the locking wire hole 224 to compress the pulling wire 3000. The wire pressing member 23 may be provided with one or more wire pressing members. For example, the pressing method may be one pressing wire. The end of the member 23 abuts on the inner wall of the hole, and the pulling wire 3000 is pressed between the wire pressing member 23 and the inner wall of the hole, or the ends of the two wire pressing members 23 abut to press the pulling wire 3000 between the two; the wire hole 223 can be set as a blind hole or a through hole, the wire lock hole 224 can also be set as a blind hole or a through hole, and the wire hole 223 and the wire lock hole 224 can be arranged along the The radial arrangement can also be arranged in a direction parallel to the tangent of the reel 22. In addition, the through hole 223 and the locking hole 224 are arranged to extend inward from the outer wheel wall of the reel 22. Exemplarily, the through hole The wire 223 and the wire locking hole 224 may be disposed inward from the wire winding slot 221 , or may be disposed inward from other parts of the wire winding wheel 22 . This embodiment does not limit the specific structures and positions of the wire hole 223 and the wire lock hole 224 , as long as the wire hole 223 is communicated with the wire lock hole 224 and the wire pressing member 23 can press the pulling wire 3000 .

In some embodiments of the present invention, please refer to FIG. 9 to FIG. 13 , the wire through hole 223 and the lock wire hole 224 respectively penetrate the reel 22 along the radial direction of the reel 22 from the groove bottom of the wire winding slot 221 , and also That is to say, the openings of the wire-through hole 223 and the wire-locking hole 224 are located in the wire-winding groove 221 , the wire-through hole 223 and the wire-locking hole 224 are arranged in the radial direction, and the axis of the wire-through hole 223 and the wire-locking hole 224 are arranged in the radial direction. The axes intersect, and an acute angle or a right angle may be formed between the two axes. In an optional embodiment, as shown in FIG. 12 , the axis of the wire hole 223 is perpendicular to the axis of the lock wire hole 224 . The reel 22 has a central hole 421 for cooperating with the main shaft 21 , and the through-wire hole 223 and the wire locking hole 224 provided on the reel 22 include two hole segments separated by the central hole 421 for convenience. It is understood that in this embodiment, the two hole segments of the wire hole 223 are collectively described as the wire hole 223 , and the two hole segments of the wire locking hole 224 are collectively described as the wire locking hole 224 .

On the basis of the above embodiment, please continue to refer to FIG. 12 and FIG. 13 , the main shaft 21 is radially provided with at least one set of intersecting and communicating first shaft holes 211 and second shaft holes 212 . A shaft hole 211 is coaxial with the wire hole 223 and is located between the two hole segments of the wire hole 223 , and the second shaft hole 212 is coaxial with the wire lock hole 224 and is located in two holes of the wire lock hole 224 between the holes. On the basis that the axis of the through wire hole 223 is perpendicular to the axis of the locking wire hole 224, the axis of the first shaft hole 211 and the axis of the second shaft hole 212 intersect and are perpendicular. The wire pressing member 23 of the wire 3000 is fitted with the wire locking hole 224 and the second shaft hole 212, respectively.

In some embodiments of the present invention, please refer to FIG. 9 and FIG. 10 , and in conjunction with FIG. 14 and FIG. 15 , at least one set of wire-pressing members 23 is provided, and the number of each set of wire-pressing members 23 is two, it can be understood Ground, the number of groups of the wire pressing members 23, the number of groups of the first shaft holes 211 and the second shaft holes 212 are set according to the number of the wire through holes 223 or the wire lock holes 224 on the reel 22. When the reel 22 In cooperation with a pulling wire 3000, when the locking wire hole 224 is provided with one set, the first shaft hole 211 and the second shaft hole 212 are respectively provided with one group, and the wire pressing member 23 is correspondingly provided with one group; When the pulling wire 3000 is matched, and there are two locking wire holes 224, two sets of the first shaft hole 211 and the second shaft hole 212 are correspondingly provided, and two sets of the wire pressing member 23 are correspondingly provided. The two wire pressing members 23 are respectively penetrated from the two ends of the locking wire hole 224 in the locking wire hole 224 and in contact with the second shaft hole 212 to clamp the pulling wire 3000 . Each wire pressing member 23 also plays the role of connecting the main shaft 21 and the winding wheel 22 while pressing the wire, which facilitates assembly, reduces the number of parts and improves the compactness of the structure.

In an optional embodiment, the wire pressing member 23 is configured as a stud, correspondingly, the wire locking hole 224 can be configured as a through hole, and the inner wall of the second shaft hole 212 can be provided with threads, so that the stud can be automatically After the locking wire hole 224 is inserted, it is matched with the thread of the second shaft hole 212 until the end faces of the two opposite studs abut and clamp the pulling wire 3000 . Further, the end face of the wire pressing member 23 for pressing the pulling wire 3000 is provided with concave and convex stripes. Taking the wire pressing member 23 as a stud as an example, the concave and convex stripes can be integrally formed on the end face of the stud. When the end faces of the posts are in contact with each other, the matching of the concave and convex stripes can improve the frictional force, thereby further improving the pressing effect on the pulling wire 3000 .

During the assembly process of the winding locking mechanism 20 in this embodiment, the proximal end portion of the pulling wire 3000 can be placed in the wire through hole 223 and the first shaft hole 211 first, and then the two wire pressing members 23 can be respectively removed from The two outer orifices of the locking wire hole 224 are penetrated inward until the ends of the two wire pressing members 23 abut, and the pulling wire 3000 is pressed at the part where the first shaft hole 211 and the second shaft hole 212 communicate with each other. tight. When the reel 22 is rotated toward the winding direction of the puller wire 3000, the puller wire 3000 can be tightened, so that the distal end of the sheath tube 2000 is bent toward the set direction. To sum up, the arrangement of the wire hole 223 , the wire locking hole 224 and the wire pressing member 23 in this embodiment improves the stability of the connection between the pulling wire 3000 and the reel 22 . The adhesive connection method is more reliable, which can prevent the proximal end of the puller wire 3000 from interfering with other components such as the worm wheel 33 or the worm screw 32, thereby reducing the risk of disorder of the puller wire 3000 inside the handle.

Further, due to the rotation of the reel 22, the puller wire 3000 is pulled, thereby driving the distal end of the sheath tube 2000 to bend, so the degree of bending of the sheath tube 2000 is related to the rotation angle of the reel 22. In the embodiment, as shown in FIG. 1 , the sheath tube bending handle 100 further includes a pointer 60, and the pointer 60 can be arranged coaxially with the reel 22, and a corresponding scale mark can also be provided. Therefore, the pointer 60 can be used for The rotation angle of the reel 22 is indicated, and the operator judges the bending degree of the sheath tube 2000 by the angle indicated by the pointer 60, which is helpful for the operator to grasp the operation situation. It can be understood that the number of the pointers 60 is equal to the number of the winding locking mechanisms 20 in the sheath tube bending handle 100 , that is, one pointer 60 is used to indicate the rotation angle of one winding wheel 22 .

On the basis of the above-mentioned embodiment, since the worm wheel 33, the main shaft 21 and the winding wheel 22 rotate coaxially, the worm wheel 33, the main shaft 21 and the winding wheel 22 rotate at the same angle, and the pointer 60 can rotate with the worm wheel 33, the main shaft 21 and the winding wheel 22 at the same angle. Either one of the reels 22 is connected. In an optional embodiment, as shown in FIG. 1 , each pointer 60 is connected to the end of one main shaft 21 , for example, the end of the main shaft 21 is connected to the housing 10 through the bearing 50 , and the main shaft 21 The end face of the horn can be exposed outside the casing 10, and the pointer 60 connected with the main shaft 21 is also located outside the casing 10, which is more convenient for the operator to observe. In this embodiment, the pointer 60 is perpendicular to the axis of the main shaft 21, and the side of the pointer 60 facing the main shaft 21 is provided with a connecting part. Basically, the outer surface of the housing 10 is marked with scale lines, and the pointer 60 is parallel to the surface on which the scale lines are marked, so as to improve the accuracy of indication and facilitate the operator to read. In addition, a transparent cover may be connected outside the housing 10, and the transparent cover is buckled and arranged outside the pointer 60 and the scale line, so as to protect the pointer 60 and the scale line from dust.

In some embodiments of the present invention, please refer to FIG. 2 , FIG. 3 and FIG. 4 , the sheath tube bending handle 100 further includes a limiting mechanism 70 . In order to limit at least one of the rotation range and rotation direction of the spool 22 , the number of the limiting mechanisms 70 is the same as the number of the spool locking mechanisms 20 . Exemplarily, when one winding locking mechanism 20 is provided, one limiting mechanism 70 is correspondingly provided; when two winding locking mechanisms 20 are provided, two limiting mechanisms 70 are correspondingly provided. In this embodiment, the limiting mechanism 70 can prevent the reel 22 from rotating in a direction that causes the pulling wire 3000 to become loose, or can control the rotation range, so as to prevent the reel 22 from rotating excessively and tearing the pulling wire 3000 and preventing the pulling wire 3000 from rotating. fracture.

Further, each limiting mechanism 70 includes a rotating member 71 and at least one limiting plate 72. The limiting plate 72 can be disposed on the housing 10, for example, can be integrally formed on the housing 10, and the shape of the limiting plate 72 can be It is a rectangular plate shape, a fan-shaped plate shape or an irregular shape, which is not specifically limited in this embodiment. The rotating member 71 is connected with the winding locking mechanism 20, and can rotate with the winding locking mechanism 20, for example, it can be connected with the main shaft 21, and can also be connected with the winding wheel 22. In an optional embodiment, such as As shown in FIG. 2 , the rotating member 71 is connected with the main shaft 21, and the way of connecting the two can be integrally formed, welded, plugged or connected by fasteners; the rotating member 71 can be set as a rotating plate or a rotating rod, and the shape of the rotating rod can be It can be set in a cylindrical rod shape, a Z-shaped rod shape, an L-shaped rod shape or an irregular shape, which is not specifically limited in this embodiment. Taking the shape of the rotating member 71 as a cylindrical rod as an example, the axis of the rotating member 71 is perpendicular to the axis of the main shaft 21, and the end of the rotating member 71 is used to abut against the limit plate 72 to prevent rotation, thereby restricting the main shaft 21 and the main shaft 21. The reel 22 rotates.

On the basis of the above-mentioned embodiment, the number of the limit plates 72 is set according to the factors to be limited by the limit mechanism 70. Taking the number of both the winding locking mechanism 20 and the limit mechanism 70 as an example, the limit mechanism 70 can be It includes a rotating member 71 and two limiting plates 72. The two ends of the rotating member 71 are in contact with the sides of the two limiting plates 72 respectively in the initial state, so that the main shaft 21 and the reel 22 can only be in contact with each other. Rotate in the opposite direction to limit the direction of rotation; when the rotating member 71 is rotated to the set position, it is in contact with the other side of the limit plate 72, thereby limiting the spindle 21 and the reel 22 to continue to rotate, so as to limit the rotation scope purpose.

The sheath tube bending handle 100 proposed in this embodiment is matched with a sheath tube 2000 that can be bent in one or more directions. The distal end of the sheath tube 2000 is driven to bend in one direction, and the sheath tube bending handle 100 is a one-way bending handle; when the sheath tube 2000 is provided with two pulling wires 3000, the two pulling wires 3000 can drive The sheath tube 2000 is bent in two different directions. At this time, the sheath tube bending handle 100 is a two-way bending handle; when the pulling wires 3000 of the sheath tube 2000 are set to three, the three pulling wires 3000 can drive the sheath tube 2000 toward the Bending in three different directions, at this time, the sheath tube bending handle 100 is a three-way bending handle. The three-way bending mode, the two-way bending mode and the one-way bending mode will be described in turn through three embodiments below.

Example 1

Referring to FIGS. 1 to 15 , the sheath tube bending handle 100 proposed in this embodiment can adjust the sheath tube 2000 in three directions, that is, the sheath tube bending handle 100 proposed in this embodiment can be combined with the sheath tube 2000 The three puller wires 3000 are matched to make the distal end of the sheath tube 2000 bend in three different directions under the pulling of the three puller wires 3000 . As shown in FIGS. 1 to 4 , the sheath tube bending handle 100 includes a housing 10 , two sets of driving assemblies 30 , and two winding locking mechanisms 20 , and each set of driving assemblies 30 is matched with one winding locking mechanism 20 . , the sheath tube 2000 is penetrated in the casing 10 , the two sets of winding locking mechanisms 20 are arranged in the casing 10 along the axial direction of the sheath tube 2000 , and the three pulling wires 3000 are all drawn from the sheath tube 2000 located in the casing 10 . The pipe section extends out and cooperates with two winding locking mechanisms 20 .

In this embodiment, the two sets of drive assemblies 30 are a first drive assembly 301 and a second drive assembly 302 respectively. As shown in FIG. 2 , the first drive assembly 301 and the second drive assembly 302 can be installed on the housing 10 in opposite directions. Therefore, the knob 31 of the first drive assembly 301 and the knob 31 of the second drive assembly 302 are located on opposite sides of the housing 10, respectively. This arrangement can avoid the interference of the two knobs 31, and is conducive to improving the The compactness of the internal structure of the housing 10 makes full use of the installation space in the housing 10 and reduces the overall volume of the sheath tube bending handle 100 . Further, the structures of the first drive assembly 301 and the second drive assembly 302 may be the same, and the specific structures of the housing 10 , the first drive assembly 301 and the second drive assembly 302 refer to the above embodiments, and are not repeated here.

Please continue to refer to FIG. 2 and FIG. 3 . Exemplarily, the two winding locking mechanisms 20 are the first winding locking mechanism 201 and the second winding locking mechanism 202 , and the three pulling wires 3000 are the first winding locking mechanism 201 , respectively. The puller wire 3001, the second puller wire 3002 and the third puller wire 3003, the first winding locking mechanism 201 cooperates with the first pulling wire 3001, and the second winding locking mechanism 202 simultaneously pulls the second pulling wire The wire 3002 cooperates with the third pulling wire 3003; the first driving assembly 301 drives the first reel 2201 of the first wire winding locking mechanism 201 to rotate, thereby pulling the first pulling wire 3001, and the second driving assembly 302 drives the first pulling wire 3001. The second winding wheel 2202 of the two-winding locking mechanism 202 rotates, and then the second pulling wire 3002 or the third pulling wire 3003 is pulled by different rotation directions. Therefore, the sheath tube bending handle proposed in this embodiment is 100 is convenient for the operator to operate, and solves the problem that the sheath tube bending handle 100 is complicated to operate.

Please continue to refer to FIG. 2 and FIG. 3 , and refer to FIG. 9 and FIG. 10 in combination. In this embodiment, the first winding locking mechanism 201 includes a first main shaft 2101 and a first winding wheel 2201 , and the second winding locking mechanism 202 It includes a second main shaft 2102 and a second winding wheel 2202. The first winding wheel 2201 is provided with a winding slot 221, a group of wire holes 223 and a wire lock hole 224, and a group of first main shaft 2101 is provided. The shaft hole 211 and the second shaft hole 212; the second winding wheel 2202 is provided with two winding grooves 221, two sets of wire holes 223 and lock wire holes 224, and the second main shaft 2102 is provided with two sets of first shafts hole 211 and second shaft hole 212 . In addition, as shown in FIG. 1, the ends of the first spindle 2101 and the second spindle 2102 are respectively connected with pointers 60, and the two pointers 60 are used to display the rotation angles of the first spindle 2101 and the second spindle 2102, respectively. Correspondingly, The casing 10 is provided with two sets of scale lines and two transparent covers matched with the two pointers 60 .

Please continue to refer to FIG. 9 and FIG. 15 , the outer wheel wall of the first winding wheel 2201 is provided with a first winding groove 2211 along the circumferential ring, and the first winding wheel 2201 is radially provided with a set of vertically communicating through-line holes 223 and Locking wire hole 224, the first puller wire 3001 extends from the sheath tube 2000 and is first wound in the first wire winding slot 2211, and the portion of the first puller wire 3001 near the proximal end extends into the wire hole 223 and the first shaft The hole 211 is clamped by the two pulling members, so that when the first reel 2201 rotates toward the winding direction of the first pulling wire 3001, the first pulling wire 3001 can be tightened, thereby making the first pulling wire 3001 tight. The distal end of the sheath 2000 is bent in the first direction.

In some embodiments of the present invention, as shown in FIG. 2 , the sheath tube 2000 penetrated in the housing 10 is partially located in the first winding groove 2211 , and the axis of the sheath tube 2000 is tangential to the first winding wheel 2201 In parallel, the first pulling wire 3001 protrudes from the side of the sheath tube 2000 facing the first winding slot 2211, extends tangentially and is wound in the first winding slot 2211 in the counterclockwise direction. The groove bottom surface of the wire winding groove 2211 is set as an arc surface, and the groove bottom surface matches the shape of the outer side wall of the sheath tube 2000, so that the first pulling wire 3001 and the first winding wheel 2201 are kept as tangent or approximately tangent as possible. , which can prevent the outer wall of the sheath tube 2000 from being scratched when the first pulling wire 3001 is pulled.

Please refer to FIG. 10 , the outer wheel wall of the second winding wheel 2202 is provided with a second winding slot 2212 and a third winding slot 2213 along the circumferential ring, and the second winding slot 2212 and the third winding slot 2213 are arranged in the axial direction , the second winding wheel 2202 is radially provided with two sets of vertically communicating through holes 223 and locking holes 224, one of which is located in the second winding slot 2212, and the other set is located in the third winding slot 2213 Correspondingly, the main shaft 21 matched with the second reel 2202 is radially provided with two sets of vertically communicating first shaft holes 211 and second shaft holes 212, and the second puller wire 3002 extends from the sheath tube 2000 After extending, it is wound in the second winding groove 2212, and extends into the corresponding wire hole 223 and the first shaft hole 211 to be clamped by two pulling members; the third pulling wire 3003 extends from the sheath tube 2000 Then, it is wound in the third winding groove 2213, and extends into the corresponding wire hole 223 and the first shaft hole 211 to be clamped by two pulling members. In this embodiment, the winding directions of the second pulling wire 3002 and the third pulling wire 3003 are opposite. Taking the second pulling wire 3002 winding in the clockwise direction and the third pulling wire 3003 winding in the counterclockwise direction as an example, when When the second reel 2202 rotates in the clockwise direction, the second puller wire 3002 can be pulled, thereby bending the distal end of the sheath 2000 in the second direction. When the second reel 2202 rotates in the counterclockwise direction, The third puller wire 3003 can be pulled, thereby bending the distal end of the sheath 2000 in a third direction opposite to the second direction.

On the basis of the above-mentioned embodiment, the sheath tube 2000 may be partially located in the second winding slot 2212 or the third winding slot 2213 , that is, one of the second winding slot 2212 and the third winding slot 2213 It is flush with the first winding slot 2211, so as to ensure that the sheath tube 2000 is threaded along a straight line. arc surface, so as to ensure that at least one of the second puller wire 3002 and the third puller wire 3003 is tangent or approximately tangent to the second reel 2202 as much as possible, reducing or avoiding the impact on the outer wall of the sheath tube 2000. scratched.

Further, in some embodiments of the present invention, as shown in FIG. 2 and FIG. 10 , the outer wheel wall of the second reel 2202 is further provided with a sheath tube escape groove 222, along the axial direction of the second reel 2202, The sheath escape groove 222 is located between the second winding groove 2212 and the third coil groove 2213 , and is flush with the first coil groove 2211 , and the sheath escape groove 222 can be arranged around the outer wheel of the second winding wheel 2202 On the wall, it can also be arranged only at the part where the second reel 2202 faces the sheath tube 2000 , and the shape of the sheath tube escape groove 222 is not specifically limited in this embodiment. The sheath tube avoidance groove 222 can accommodate part of the tube section of the sheath tube 2000, and the bottom surface of the sheath tube avoidance groove 222 can also be in contact with the side wall of the sheath tube 2000. Further, the groove bottom surface of the sheath tube avoidance groove 222 can be set as an arc The second puller wire 3002 and the third puller wire 3003 are as close to the second reel 2202 as possible to reduce or avoid scratching the outer wall of the sheath tube 2000. .

On the basis of the above embodiment, as shown in FIG. 2 , the axis of the sheath tube 2000 is parallel to the tangential direction of the second reel 2202 , and the second puller wire 3002 extends from the side of the sheath tube 2000 facing the top cover 11 . , extends obliquely upward, and is wound in the second winding groove 2212 in a clockwise direction, and the third pulling wire 3003 extends from the side of the sheath tube 2000 facing the bottom shell 12, extends obliquely downward, and rotates counterclockwise The direction is wound in the third winding slot 2213. Therefore, on the basis of ensuring that the second puller wire 3002 and the third puller wire 3003 are respectively connected to the second reel 2202 , it is possible to prevent the second puller wire 3002 and the third puller wire 3003 from interfering and winding each other.

Further, in some embodiments of the present invention, as shown in FIG. 2 and FIG. 3 , the sheath tube bending handle 100 further includes a wire blocking lever 80 . It is understood that since the second puller wire 3002 extends from the sheath tube 2000 After exiting, it is wound in the second winding groove 2212 in a clockwise direction. When the second winding wheel 2202 is rotated in a clockwise direction, the part of the second pulling wire 3002 close to the sheath tube 2000 moves away from the sheath tube 2000 The outer wall of the sheath tube 2000 is easily scratched. In this embodiment, the wire retaining rod 80 is arranged at the angle between the sheath tube 2000 and the second reel 2202, and the wire retaining rod 80 is connected to the second pulling wire 3002. abutting against each other, so that the second pulling wire 3002 is blocked and turned and then wound into the second wire winding groove 2212, thus, when the second pulling wire 3002 is pulled, the wire blocking lever 80 can prevent the second pulling wire 3002 moves in a direction away from the above-mentioned angle, and makes the second puller wire 3002 move in a direction close to the above-mentioned angle first, so as to prevent the second puller wire 3002 from scratching the outer wall of the sheath tube 2000 . In this embodiment, the thread blocking lever 80 may be connected to the housing 10 by means of snap connection, plug connection or fastener connection, or may be integrally formed in the housing 10 .

Further, please refer to FIG. 2 to FIG. 4 , in this embodiment, the number of limit mechanisms 70 is two, and the two limit mechanisms 70 are a first limit mechanism 701 and a second limit mechanism 702 respectively. The positioning mechanism 701 cooperates with the first winding locking mechanism 201. The first limiting mechanism 701 includes a first rotating rod 711 and two limiting plates 72. According to the above embodiment, the first pulling wire 3001 is wound counterclockwise. On the first reel 2201, in this embodiment, the first rotating rod 711 is vertically connected with the first main shaft 2101, and the two ends of the first rotating rod 711 are in contact with the two limit plates 72 respectively in the initial state, The first rotating rod 711 cannot be rotated clockwise, but can only be rotated counterclockwise to pull the first pulling wire 3001, which can prevent the operator from twisting the knob 31 in the wrong direction, thereby preventing the first pulling wire 3001 from loosening and falling off. ; The second limit mechanism 702 cooperates with the second winding locking mechanism 202, and the second limit mechanism 702 includes a second rotation rod 712 and a limit plate 72. According to the above-mentioned embodiment, the second puller wire 3002 and The third pulling wires 3003 are all wound around the second reel 2202. In this embodiment, the second rotating rod 712 is vertically connected to the second main shaft 2102. One end of the second rotating rod 712 is rotated at a certain angle to the limiter The plate 72 abuts and cannot continue to rotate, thus limiting the rotation range of the second reel 2202, which can prevent the operator from twisting the knob 31 excessively, thereby preventing the second puller wire 3002 from loosening and falling off, the third puller wire 3003 It is torn and broken, or the second puller wire 3002 is torn and broken, and the third puller wire 3003 loosely falls off.

Embodiment 2

Referring to FIG. 16 , the sheath tube bending handle 100 proposed in this embodiment can adjust the sheath tube 2000 in two directions, that is, the sheath tube bending handle 100 proposed in this embodiment can be adjusted to the two The pulling wires 3000 cooperate to make the distal end of the sheath tube 2000 bend in two different directions respectively under the pulling of the two pulling wires 3000 . In this embodiment, each group of driving assemblies 30 is matched with one winding locking mechanism 20. It can be understood that when the driving assemblies 30 are arranged in one group, the winding locking mechanism 20 is arranged as one, and is simultaneously connected with the two winding locking mechanisms. The pulling wires 3000 are matched; when the driving assemblies 30 are arranged in two groups, two winding locking mechanisms 20 are arranged, and each winding locking mechanism 20 is matched with one pulling wire 3000 . The sheath tube bending handle 100 includes a housing 10, the sheath tube 2000 is penetrated in the housing 10, and the two pulling wires 3000 extend from the tube section of the sheath tube 2000 located in the housing 10, and are connected with one or two. The winding locking mechanism 20 cooperates.

When the two winding locking mechanisms 20 are matched with the two pulling wires 3000 respectively, the structure of the driving assembly 30 can refer to the structure of the first driving assembly 301 in the first embodiment, and the structure of the winding locking mechanism 20 can be implemented with reference to In the structure of the first winding locking mechanism 201 in Example 1, in this embodiment, the two winding locking mechanisms 20 are arranged along the axial direction of the sheath tube 2000 , and the two pulling wires 3000 extend from different parts of the sheath tube 2000 . The two pulling wires 3000 and the winding wheel 22 cooperate with each other respectively, and the matching mode of the two pulling wires 3000 and the winding wheel 22 can refer to the matching mode of the first pulling wire 3001 and the first winding wheel 2201 in the first embodiment. This will not be repeated here. The present embodiment utilizes two sets of driving assemblies 30 and two winding locking mechanisms 20 to control two pulling wires 3000 , which is convenient for the operator to operate, and solves the problem of complicated operation of the sheath tube bending handle 100 .

Further, the sheath tube bending handle 100 proposed in this embodiment further includes a limit mechanism 70, the number of limit mechanisms 70 is two, and the two limit mechanisms 70 are respectively matched with the two winding locking mechanisms 20 to limit The specific structure of the positioning mechanism 70 can refer to the specific structure of the first limiting mechanism 701 in the first embodiment, which will not be repeated here. Avoid loosening of the corresponding puller wire 3000.

When one winding locking mechanism 20 cooperates with two pulling wires 3000 at the same time, the structure of the driving assembly 30 may refer to the structure of the second driving assembly 302 in the first embodiment, and the structure of the winding locking mechanism 20 may refer to the embodiment In the structure of the second winding locking mechanism 202 in the first example, in this embodiment, the two pulling wires 3000 extend from the sheath tube 2000 in opposite directions respectively, and are respectively wound around the two windings of the winding locking mechanism 20 . In the wire slot 221, the reel 22 pulls the two pulling wires 3000 through different rotation directions. For the matching method of the two pulling wires 3000 and the reel 22, refer to the second pulling wire 3002 and the second pulling wire 3002 in the first embodiment. The way of cooperation between the three pulling wires 3003 and the second reel 2202 will not be repeated here. The present embodiment utilizes a set of driving components 30 and a winding locking mechanism 20 to control two pulling wires 3000 at the same time, which not only improves the compactness of the sheath tube bending handle 100, but also facilitates the operation of the operator, and solves the problem of sheath tube bending. The problem that the bending handle 100 is complicated to operate.

Further, the sheath tube bending handle 100 proposed in this embodiment further includes a thread stop lever 80 and a limit mechanism 70. The specific structure of the thread stop lever 80 can refer to the specific structure of the thread stop lever 80 in the first embodiment, and is not described here. To reiterate, in this embodiment, the wire blocking rod 80 is used to cooperate with the pulling wire 3000 wound clockwise on the reel 22 to prevent the pulling wire 3000 from scratching the outer wall of the sheath tube 2000 . The specific structure of the limiting mechanism 70 can refer to the specific structure of the second limiting mechanism 702 in the first embodiment, which will not be repeated here. One of the pulling wires 3000 came loose and the other was torn and broken.

Embodiment 3

Referring to FIGS. 17 to 20 , the sheath tube bending handle 100 proposed in this embodiment can adjust the sheath tube 2000 in one direction, that is, the sheath tube bending handle 100 proposed in this embodiment can be adjusted to the A puller wire 3000 cooperates to make the distal end of the sheath tube 2000 bend in a set direction under the pulling of the puller wire 3000 . As shown in FIG. 18 , in this embodiment, the sheath tube bending handle 100 includes a housing 10 , a set of driving components 30 and a winding locking mechanism 20 . The sheath tube 2000 is inserted into the housing 10 , and the pulling wire 3000 The tube section of the sheath tube 2000 located in the housing 10 protrudes and cooperates with the winding locking mechanism 20 .

The structure of the drive assembly 30 in this embodiment can refer to the structure of the first drive assembly 301 in the first embodiment, and the structure of the winding locking mechanism 20 can refer to the structure of the first winding locking mechanism 201 in the first embodiment. For the matching manner of the pulling wire 3000 and the reel 22, reference may be made to the matching manner of the first pulling wire 3001 and the first winding wheel 2201 in the first embodiment, which will not be repeated here. In this embodiment, a set of driving components 30 and a winding locking mechanism 20 are used to control the pulling wire 3000, which is convenient for the operator to operate, and solves the problem that the sheath tube bending handle 100 is complicated to operate.

Further, as shown in FIGS. 18 and 19 , the sheath tube bending handle 100 proposed in this embodiment further includes a limit mechanism 70 , which cooperates with the winding locking mechanism 20 . The specific structure of the limit mechanism 70 The specific structure of the first limiting mechanism 701 in the first embodiment can be referred to, and details are not repeated here. In this embodiment, the limiting mechanism 70 is used to prevent the operator from twisting the knob 31 in the wrong direction, thereby preventing the pulling wire 3000 from loosening. fall off. Further, as shown in FIG. 20 , in some embodiments of the present invention, the sheath tube bending handle 100 may further include a gear set 90 . The gear set 90 is arranged in the housing 10 and is respectively driven with the knob 31 and the worm 32 . Therefore, the gear set 90 can have the effect of increasing the transmission ratio, and improve the rotation efficiency of the worm gear 33 when the operator rotates the knob 31 .

Referring to FIG. 21 , an embodiment of the second aspect of the present invention provides a delivery device 1000 , which can be used in interventional therapy to deliver implants such as artificial valves, stents, and valve clamp 4000 . The delivery device 1000 includes at least one sheath tube 2000 and at least one sheath tube bending handle 100 according to any of the above embodiments. The proximal end portion of the sheath tube 2000 is inserted into the sheath tube bending handle 100 . In this embodiment, the sheath tube 2000 can be a hollow sheath tube 2000 whose distal end can be bent or manipulated, such as an adjustable bendable sheath tube 2000, a plastic sheath tube 2000, etc. The sheath tube 2000 is straight or approximately straight when no bending force is applied to the sheath tube 2000. In a straight shape, for example, the sheath tube 2000 is provided with an adjustable bendable tube section near the distal end, the pull wire 3000 is connected with the adjustable bend tube section, and the sheath tube bending handle 100 can make the sheath by pulling the pull wire. The distal end of the tube 2000 is curved.

Exemplarily, the delivery device 1000 includes a primary sheath 2000 and a secondary sheath 2000, the secondary sheath 2000 can be passed through the primary sheath 2000, and the implant can be connected to the end of the secondary sheath 2000, The first-level sheath tube 2000 is provided with a pulling wire 3000, and the proximal part of the first-level sheath tube 2000 is inserted into a sheath tube bending handle 100, and the distal end of the first-level sheath tube 2000 can be adjusted in the sheath tube. The handle 100 is bent in one direction under the control of the secondary sheath 2000; The distal end of 2000 can be bent in three directions under the control of the sheath bending handle 100 to deliver the implant to a set location in the patient. In this embodiment, the number of the sheath tube 2000 and the sheath tube bending handle 100 is not specifically limited, and may be set according to the actual situation. The delivery device 1000 proposed in this embodiment has the same advantages as the sheath tube bending handle 100 proposed in the above-mentioned embodiment, and details are not described herein again.

Referring to FIG. 22, an embodiment of the third aspect of the present invention provides a valve repair system 5000, the valve repair system 5000 includes a valve clamp 4000 and the delivery device 1000 proposed according to the embodiment of the second aspect above, the delivery device 1000 is used to deliver the valve clamp 4000, and the distal end of the sheath tube 2000 is detachably connected to the valve clamp 4000. Illustratively, the delivery device 1000 includes a plurality of sheaths 2000 and a plurality of sheath deflection handles 100, each sheath deflection handle 100 cooperates with a sheath 2000 for use during the delivery of the valve clamp 4000. , the distal end of the corresponding sheath tube 2000 is controlled to bend toward the set direction, so as to deliver the valve clamp 4000 to the set position. In addition, the valve repair system 5000 further includes a driving member for controlling the valve clamp 4000, the driving member It is passed through the sheath tube 2000 and is detachably connected to the valve clamp 4000 . This embodiment does not specifically limit this. The valve repair system 5000 proposed in this embodiment has the same advantages as the sheath tube bending handle 100 and the delivery device 1000 proposed in the above-mentioned embodiments, which will not be repeated here.

In an optional embodiment, the valve repair system 5000 includes a valve clamp 4000, a primary sheath, a secondary sheath, a tertiary sheath, and a delivery device 1000, where the delivery device 1000 includes a first sheath for bending The handle and the second sheath tube bending handle, wherein the structure of the first sheath tube bending handle 100 can refer to the structure of the sheath tube bending handle 100 proposed in the third embodiment of the first aspect of the embodiment. The tube is adjusted in one direction, and the structure of the second sheath bending handle can refer to the structure of the sheath bending handle 100 proposed in the first embodiment of the first aspect, which is used for three-way bending of the secondary sheath. , the distal end of the tertiary sheath is detachably connected to the valve clamp, on this basis, the secondary sheath is pierced in the primary sheath and pierced from the distal end, and the tertiary sheath is pierced in the secondary sheath The sheath is pierced from the distal end. During the working process of the valve repair system 5000, the bending of the primary sheath drives the bending of the secondary sheath and the secondary sheath at the same time, and the bending of the secondary sheath drives the bending of the tertiary sheath. Then, the valve clamp 4000 is driven to reach the set position, and the valve clamp 4000 can be driven to fine-tune and adjust the orientation during the process of clamping the valve until the clamping is completed.

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical scope disclosed by the present invention can easily think of changes or substitutions, All should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (13)

1. A sheath tube bend adjustment handle is characterized in that, the sheath tube bend adjustment handle is used to pull the puller wire of the sheath tube so that the distal end of the sheath tube is bent toward a set direction, and the sheath tube adjusts The curved handle includes at least one set of drive assemblies and at least one winding locking mechanism, and the winding locking mechanism includes: a main shaft, the main shaft is drivingly connected with the driving assembly; The winding wheel is sleeved on the main shaft, the outer wheel wall of the winding wheel is provided with at least one winding groove along the circumferential direction, and the winding wheel is provided with at least one winding groove along the direction perpendicular to the axial direction. A set of intersecting and communicating through-wire holes and lock-wire holes, the part of the pulling wire extending from the sheath tube is wound around the wire winding groove, and the part of the pulling wire near the end extends into the wire in the through hole; A wire pressing member, which is arranged in the locking wire hole and compresses the pulling wire. 2 . The sheath tube bending handle according to claim 1 , wherein, along the axial direction of the winding wheel, the width of the winding groove is greater than or equal to the outer diameter of the sheath tube to accommodate the outer diameter of the sheath tube. 3 . Part of the tube section of the sheath tube, the groove bottom surface of the wire winding slot is in contact with and/or conforms to the shape of the side wall of the sheath tube. 3. The sheath tube bending handle according to claim 1, wherein the outer wheel wall of the reel is further provided with a sheath tube avoidance groove, and along the axial direction of the reel, the sheath tube avoids The width of the groove is greater than or equal to the outer diameter of the sheath tube to accommodate part of the tube section of the sheath tube, and the bottom surface of the sheath tube escape groove is in contact with and/or conforms to the shape of the side wall of the sheath tube. 4 . The sheath tube bending handle according to claim 3 , wherein there are two winding grooves, and along the axial direction of the winding wheel, the two winding grooves are respectively located in the The sheath avoids both sides of the groove. 5 . The sheath tube bending handle according to claim 1 , wherein the through wire hole and the lock wire hole respectively penetrate from the bottom of the wire winding groove along the radial direction of the winding wheel. 6 . the reel. 6 . The sheath tube bending handle according to claim 1 or 5 , wherein the axis of the locking wire hole is perpendicular to the axis of the through wire hole. 7 . 7 . The sheath tube bending handle according to claim 5 , wherein at least one set of the wire-pressing members is provided, and the number of the wire-pressing members in each set is two, and the number of the two wire-pressing members is 2 . The two ends of the locking wire hole respectively pass through the locking wire hole and abut against each other, so as to clamp the pulling wire. 8 . The sheath tube bending handle according to claim 7 , wherein the main shaft is radially provided with at least one set of intersecting and communicating first shaft holes and second shaft holes. The shaft hole is arranged coaxially with the wire hole, the second shaft hole is arranged coaxially with the locking wire hole, and the inner wall of the second shaft hole is provided with threads. 9. The sheath tube bending handle according to claim 1 or 8, wherein the wire pressing member is configured as a stud, and/or the wire pressing member is used for pressing the end face of the puller wire Set with concave and convex stripes. 10 . The sheath tube bending handle according to claim 1 , wherein a baffle plate is further provided on the winding wheel, and the baffle plate is located at the notch of the wire winding groove to block the pulling. 11 . Wire. 11. The sheath tube bending handle according to claim 1, wherein the drive assembly comprises a knob, a worm and a worm wheel connected in sequence, the worm wheel is connected with the main shaft, and the sheath tube bending handle is further It includes a casing, a sheath tube fixing assembly and a limit mechanism arranged in the casing, the sheath tube fixing assembly is used to fix the sheath tube, and the limit mechanism is used to limit the reel in a set range in and/or turn in the set direction. 12. A delivery device, characterized in that it comprises at least one sheath tube and the sheath tube bending handle according to any one of claims 1 to 11, wherein the sheath tube is passed through the sheath tube bending handle . 13. A valve repair system, characterized by comprising a valve clamp and the delivery device according to claim 12, the delivery device being used to deliver the valve clamp, and the distal end of the sheath is connected to the valve clamp. The valve clamps are detachably connected.

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