CN112773563A

CN112773563A - Separable conveying and clamping device

Info

Publication number: CN112773563A
Application number: CN202011167882.2A
Authority: CN
Inventors: 王宝; 徐军; 林林
Original assignee: Shanghai Huihe Healthcare Technology Co Ltd
Current assignee: Shanghai Huihe Healthcare Technology Co Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-05-11
Anticipated expiration: 2040-10-26
Also published as: CN112773563B

Abstract

The application provides shutoff clamping device is carried to disconnect-type includes: a clamping assembly comprising an upper clamping assembly and a lower clamping assembly, the upper clamping assembly being detachably mated with the lower clamping assembly, the clamping assembly having an expanded state and a closed state and being movable between the expanded state and the closed state, one of the upper clamping assembly and the lower clamping assembly being retracted within the other of the upper clamping assembly and the lower clamping assembly when the clamping assembly is in the closed state for placement within the sheath, the upper clamping assembly and the lower clamping assembly being separately expanded and adjustable for capturing a clamped leaflet when the clamping assembly is in the expanded state. The upper clamping assembly and the lower clamping assembly of the separated conveying and plugging clamping device can be independently controlled, valve leaflets are effectively captured, separated conveying is achieved, the conveying size of products is reduced, and the product bending capacity is improved.

Description

Separable conveying and clamping device

Technical Field

The embodiment of the application relates to the technical field of medical equipment, in particular to a separated type conveying, blocking and clamping device.

Background

Mitral valve, tricuspid valve, aortic valve, pulmonary valve, etc. commonly occur as valvular insufficiency, and in the case of mitral valve, during systole, a portion of the blood in the left ventricle flows back through the orifice of the incompetent mitral valve to the left atrium. The left atrium receives blood from both left ventricular regurgitation and pulmonary venous inflow, and the volume of left atrial blood increases dramatically, raising pressure, and leading to hypertrophy of the left atrium.

In diastole, more blood flows from the left atrium to the left ventricle, so that the left ventricle is enlarged due to the enhanced contraction, after the compensation phase is progressed to the decompensation phase, both the left atrium and the left ventricle are subjected to heart failure, and further pulmonary congestion, pulmonary arterial hypertension, right ventricular enlargement, right atrial enlargement, right heart failure and body circulation congestion sequentially occur.

Traditional treatment means include active surgical approaches or palliative efforts to combat inevitable heart failure with drugs. Among the surgical methods are valve replacement and annuloplasty. In surgical procedures, typical open chest surgery is very invasive, requires the establishment of extracorporeal circulation, and has a high incidence of complications and risk of infection. Many patients do not tolerate the enormous surgical risk and can only remain indefinitely at risk for death.

At present, fewer products for treating mitral valve regurgitation and tricuspid valve regurgitation through minimally invasive catheters are approved in China, and the products need to change the structure of the heart in the healing process, thereby bringing great pressure and inadaptability to the heart after operation.

Disclosure of Invention

In view of the above, the present application provides a split delivery occlusion clamping device to overcome or at least partially solve the above problems.

The detachable conveying clamping device comprises: the clamping assembly comprises an upper clamping assembly and a lower clamping assembly, the upper clamping assembly is detachably matched with the lower clamping assembly, the clamping assembly has an unfolding state and a closing state and can move between the unfolding state and the closing state, when the clamping assembly is in the closing state, one of the upper clamping assembly and the lower clamping assembly is retracted into the other of the upper clamping assembly and the lower clamping assembly to be suitable for being placed into a sheath tube, and when the clamping assembly is in the unfolding state, the upper clamping assembly and the lower clamping assembly are separated and unfolded and can be adjusted to be suitable for capturing and clamping valve leaflets.

According to some embodiments of the invention, the detachable delivery clamp device further comprises an occluder disposed above the clamp assembly for occluding a regurgitant gap between leaflets.

According to some embodiments of the invention, the upper clamp assembly comprises at least two upper clamp arms, the lower clamp assembly comprises at least two lower clamp arms corresponding to the upper clamp arms, the at least two upper clamp arms are folded within the at least two lower clamp arms when the clamp assembly is in the closed state, and the at least two upper clamp arms and the at least two lower clamp arms are unfolded when the clamp assembly is in the unfolded state.

According to some embodiments of the invention, the upper and lower gripping arms are rotatable and movable in an up-down direction adapted to grip the leaflets.

Optionally, the device further comprises a push rod assembly with an adjustable axial length, and the stopper and the clamping assembly are arranged on the push rod assembly.

Optionally, clamping device is carried to detachable still includes first acting as go-between, go up the one end of centre gripping arm with push rod subassembly rotatable coupling just the other end of going up the centre gripping arm forms the free end, first acting as go-between with the free end of going up the centre gripping arm links to each other in order to drive go up the centre gripping arm and rotate.

Optionally, clamping device is carried to detachable still includes the swinging boom, the swinging boom is established the below of centre gripping arm down, swinging boom tilt connect at push rod subassembly with down between the centre gripping arm and respectively with lower centre gripping arm with push rod subassembly rotatable coupling, the swinging boom rotates in order to drive the centre gripping arm is relative down push rod subassembly rotates.

According to some embodiments of the invention, the putter assembly includes: the first push rod is provided with the upper clamping assembly, the upper clamping assembly is detachably connected with the first push rod, and the first push rod moves to drive the upper clamping assembly to move in the vertical direction; the second push rod is sleeved in the first push rod and is connected with the first push rod in a sliding manner; the third push rod, the third push rod with the second push rod can be dismantled and be connected, swinging boom and third push rod rotatable coupling, lower centre gripping subassembly is installed the third push rod outside.

Optionally, the lower clamping assembly further comprises a base and a second pull wire, the third push rod penetrates through the base and is detachably connected with the second push rod, the base is provided with a first pull wire hole suitable for the second pull wire to penetrate through, the second pull wire penetrates through the bottom of the base from the first pull wire hole, two ends of the second pull wire are connected with the operating handle, and the lower clamping arm is rotatably arranged on the base.

Further, lower centre gripping subassembly still includes the locking plate, the locking plate is established in the base, the locking plate is equipped with: the third push rod penetrates through the lock hole and is connected with the base and the second push rod; and a second string passing hole for passing the second string; the locking plate is in a locking state and a loosening state, when the second pull wire is in the loosening state, the third push rod is locked by the locking hole, and the vertical distance between the axis of the second wire threading hole and the axis of the first wire threading hole is L; when the second pull wire is in a tensioned state, the lock hole deforms to loosen the third push rod, the third push rod can move in the lock hole, the vertical distance between the axis of the second wire threading hole and the axis of the first wire threading hole is W, and W is smaller than L.

According to further embodiments of the present invention, the pushrod assembly includes: the plugging device and the upper clamping assembly are arranged on the first push rod and are detachably connected with the first push rod, and the first push rod moves to drive the plugging device and the first clamping assembly to move in the vertical direction; the second push rod is sleeved in the first push rod and is connected with the first push rod in a sliding manner; the third push rod, the third push rod with the second push rod can be dismantled and be connected, swinging boom and third push rod rotatable coupling, lower centre gripping subassembly is installed the third push rod outside.

Furthermore, the lower clamping assembly further comprises a locking plate, the locking plate is arranged in the base and provided with a locking hole, and the third push rod penetrates through the locking hole and is connected with the base and the second push rod; and a second string passing hole for passing the second string; the locking plate is in a locking state and a loosening state, when the second pull wire is in the loosening state, the third push rod is locked by the locking hole, and the vertical distance between the axis of the second wire threading hole and the axis of the first wire threading hole is L; when the second pull wire is in a tensioned state, the lock hole deforms to loosen the third push rod, the third push rod can move in the lock hole, the vertical distance between the axis of the second wire threading hole and the axis of the first wire threading hole is W, and W is smaller than L.

Optionally, the stopper is adapted to snap-fit with the base.

According to some embodiments of the invention, the upper clamping assembly is disposed above the lower clamping assembly, and when the clamping assembly is in the closed state, the upper clamping assembly is retracted downward and the lower clamping assembly is retracted outside the upper clamping assembly.

According to the technical scheme, the detachable conveying clamping device can reduce the length of the detachable conveying clamping device in the closed state, so that the over-bending capacity of the detachable conveying clamping device is improved, and the detachable conveying clamping device is favorable for conveying and implanting. After the separable conveying clamping device is implanted into a heart structure, the clamping assembly is in an unfolding state, the upper clamping assembly and the lower clamping assembly are separated and opened, and the positions of the upper clamping assembly and the lower clamping assembly are adjustable so that the upper clamping assembly and the lower clamping assembly can be matched to effectively capture and clamp valve leaflets.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic structural view of a split conveying and clamping device of the present application;

FIG. 2 is a schematic view of a closed state of a split transfer gripper according to the present application;

FIG. 3 is a schematic view of the spread-out state of a breakaway transport gripping device of the present application;

FIG. 4 is a schematic view of the spread-out state of a breakaway transport gripping device of the present application;

FIG. 5 is a schematic view of the upper clamping assembly of a split delivery clamping device of the present application shown retracted downward;

FIG. 6 is a schematic view of the lower clamping assembly of the separable conveying clamping device of the present application being folded onto the upper clamping assembly;

FIG. 7 is a schematic view of a split delivery and gripping device of the present application disposed within a sheath assembly;

FIG. 8 is a schematic view of the stopper of a split delivery gripping device of the present application at an angle when moved downward into engagement with the base;

FIG. 9 is a schematic view of the stopper of a breakaway transport gripping device of the present application at another angle when moved downwardly into engagement with the base;

FIG. 10 is a cross-sectional view taken along line A-A of FIG. 9;

FIGS. 11-12 are schematic views of the lower clamping assembly of a breakaway transport clamping device of the present application at different angles during the collapsing process;

FIG. 13 is a cross-sectional view of FIG. 12 along a central axis;

FIG. 14 is a schematic view of the gripping assembly of a breakaway transport gripping device of the present application shown collapsed against an occluding device;

FIG. 15 is a top view of the connecting structure of the third pushing rod and the base and the locking plate of the separated type conveying and clamping device of the present application;

FIG. 16 is a cross-sectional view taken along line B-B of FIG. 15;

FIGS. 17-18 are schematic views of the locking plate of a breakaway transport clamping device of the present application in a locked state;

FIGS. 19-20 are schematic views of the locking tab of a breakaway transport clamping device of the present application in a relaxed state;

FIGS. 21-27 are schematic process structures of an embodiment of a split delivery gripping apparatus of the present application in use;

FIGS. 28-31 are schematic views of a partial process configuration of another embodiment of a split delivery gripping apparatus of the present application in use;

FIG. 32 is a schematic view of the structure of the base and locking plate of the breakaway transport clamping device of the present application in a locked state;

FIG. 33 is a schematic view of the base and locking tab of a breakaway transport clamping device of the present application in an unlocked state.

Element number

100: a detachable conveying clamping device;

1: an occluder;

2: clamping assembly, 21: upper clamp assembly, 211: upper clamp arm, 22: lower clamp assembly, 221: lower clamp arm, 222: a rotating arm;

3: push rod assembly, 31: first push rod, 32: second push rod, 33: a third push rod;

41: first stay, 42: a second pull wire;

5: base, 51: first threading hole, 52: locking plate, 53: keyhole, 54: a second threading hole;

61: control device, 62: a conveying device;

7: sheath pipe assembly

8: cardiac structure, 81: leaflet, 82: left atrium, 83: the left ventricle.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application shall fall within the scope of the protection of the embodiments in the present application.

A separable delivery gripping device 100 according to an embodiment of the present invention, which separable delivery gripping device 100 can be used to be implanted within a cardiac structure 8 to grip a leaflet 81 and occlude a regurgitation gap between the leaflet 81, is described below with reference to the drawings. The separable transport jig 100 may include a jig assembly 2.

As shown in fig. 1 to 14, the clamping assembly 2 may include an upper clamping assembly 21 and a lower clamping assembly 22, the upper clamping assembly 21 and the lower clamping assembly 22 are correspondingly disposed, and the leaflet 81 is clamped between the upper clamping assembly 21 and the lower clamping assembly 22, and the leaflet 81 can be effectively captured and clamped by the cooperation of the upper clamping assembly 21 and the lower clamping assembly 22.

Wherein the upper clamping assembly 21 and the lower clamping assembly 22 are detachably engaged, that is, the upper clamping assembly 21 and the lower clamping assembly 22 are independently provided, that is, the upper clamping assembly 21 and the lower clamping assembly 22 are independently movable, so that the leaflet 81 can be effectively captured by adjusting the positions of the upper clamping assembly 21 and the lower clamping assembly 22, respectively, and the leaflet 81 can be clamped between the upper clamping assembly 21 and the lower clamping assembly 22 by the engagement of the upper clamping assembly 21 and the lower clamping assembly 22 when the leaflet 81 is clamped.

The clamping assembly 2 has an expanded state and a closed state and is movable between the expanded state and the closed state, i.e. the clamping assembly 2 is switchable between the expanded state and the closed state. Wherein when the clamping assembly 2 is in the closed state, as shown in fig. 6 and 7, one of the upper and

lower clamping assemblies

21 and 22 is retracted within the other of the upper and

lower clamping assemblies

21 and 22 to be adapted to be placed within the sheath assembly 7, and when the clamping assembly 2 is in the deployed state, the upper and

lower clamping assemblies

21 and 22 are separately deployed and adjustable to be adapted to clamp the leaflet 81.

Specifically, the detachable delivery gripping device 100 may be mated with the sheath assembly 7, for example, the sheath assembly 7 may include a tearable sheath, a delivery sheath, and an outer sheath, the detachable delivery gripping device 100 may be pushed into the outer sheath from the tearable sheath through the delivery sheath, the tearable sheath torn off, the outer sheath left to form a passageway, the passageway established from the outer sheath moved to a designated position, and then pushed out of the outer sheath through the delivery sheath, and the detachable delivery gripping device 100 maintained in a closed state.

In other words, the clamping assembly 2 is adapted to cooperate with the sheath assembly 7 in the closed state so as to be implanted into the heart structure 8 through the sheath assembly 7, and at the same time, one of the upper clamping assembly 21 and the lower clamping assembly 22 is retracted into the other, so that not only the volume size of the sheath assembly 7 and the detachable conveying clamping device 100 can be reduced, but also the length of the detachable conveying clamping device 100 in the closed state can be reduced, thereby improving the over-bending capability of the detachable conveying clamping device 100 and facilitating the conveying and implanting of the detachable conveying clamping device 100. After the separable delivery gripping apparatus 100 is implanted into the cardiac structure 8, the gripping assembly 2 is in the deployed state, the upper and lower

gripping assemblies

21 and 22 are separated and opened, and the positions of the upper and lower

gripping assemblies

21 and 22 are adjustable so that the upper and lower

gripping assemblies

21 and 22 cooperate to effectively capture the gripping leaflet 81.

In some embodiments of the present invention, the upper clamping assembly 21 may include at least two upper clamping arms 211, the lower clamping assembly 22 may include at least two lower clamping arms 221 coupled to the upper clamping arms 211, that is, the upper clamping assembly 21 may include two or more upper clamping arms 211, the lower clamping assembly 22 may include two or more lower clamping arms 221, the upper clamping arms 211 are disposed above the lower clamping arms 221 and are disposed in one-to-one correspondence with the lower clamping arms 221, and the upper clamping arms 211 and the lower clamping arms 221 may be separated by the upper clamping arms 211 and the lower clamping arms 221, and the upper clamping arms 211 and the lower clamping arms 221 may be individually controlled and adjusted, respectively, so as to facilitate the clamping of the leaflet 81.

As shown in fig. 2 and 5-7, when the clamping assembly 2 is in the closed state, the upper clamping arm 211 rotates downward and contracts, and the lower clamping arm 221 moves upward and is folded outside the upper clamping arm 211, and when the clamping assembly 2 is in the unfolded state as shown in fig. 3-4, the lower clamping arm 221 is separated from the upper clamping arm 211 and is unfolded, and simultaneously, the upper clamping arm 211 is released and rotates upward to return to the unfolded state.

Alternatively, the upper and lower grasping

arms

211 and 221 are rotatable and movable in the up-down direction to be adapted to capture grasping the leaflet 81, such that, when capturing the leaflet 81, the upper and lower grasping

arms

211 and 221 can be adjusted, and the upper and lower grasping

arms

211 and 221 rotate and move in the up-down direction to adjust the grasping space between the upper and lower grasping

arms

211 and 221, so that the leaflet 81 can be positioned between the upper and lower grasping

arms

211 and 221, and when the leaflet 81 is positioned between the upper and lower grasping

arms

211 and 221, by adjusting the distance between the upper and lower grasping

arms

211 and 221 and the angle relative to the horizontal or vertical direction, so that the grasping assembly 2 can effectively grasp the leaflet 81.

Further, the detachable conveying clamping device 100 further comprises a push rod assembly 3, the push rod assembly 3 comprises a plurality of push rods, the axial length of the push rod assembly 3 is adjustable, the clamping assembly 2 is arranged on the push rod assembly 3, and the clamping assembly 2 can be adjusted by adjusting the push rod assembly 3, so that the clamping assembly 2 can move in the up-down direction. Wherein, the upper clamping component 21 and the lower clamping component 22 can be arranged at different positions of the push rod component 3, and the relative movement of the upper clamping component 21 and the lower clamping component 22 in the up-down direction can be realized by moving different push rods of the push rod component 3.

Optionally, the detachable conveying clamping device 100 further includes a first pulling wire 41, one end of the upper clamping arm 211 is rotatably connected to the push rod assembly 3, the other end of the upper clamping arm 211 is formed as a free end, the first pulling wire 41 is connected to the free end of the upper clamping arm 211 to drive the upper clamping arm 211 to rotate, and since one end of the upper clamping arm 211 is fixed, the free end of the upper clamping arm 211 can be pulled to move in the up-down direction through the first pulling wire 41, so that the upper clamping arm 211 can be driven to rotate, and the angle between the upper clamping arm 211 and the push rod assembly 3 is changed to adjust the position of the upper clamping arm 211.

The detachable conveying clamping device 100 further includes a rotating arm 222, the rotating arm 222 is disposed below the lower clamping arm 221, and is disposed between the push rod assembly 3 and the lower clamping arm 221 and rotatably connected to the lower clamping arm 221 and the push rod assembly 3, and the rotating arm 222 rotates to drive the lower clamping arm 221 to rotate relative to the push rod assembly 3. Specifically, the number of the rotating arms 222 is at least two, each rotating arm 222 is connected to the lower clamping arm 221 in a one-to-one correspondence manner, two ends of each rotating arm 222 are connected to the push rod assembly 3 and the corresponding lower clamping arm 221 respectively, wherein each rotating arm 222 is arranged in an inclined manner, the lower end of each rotating arm 222 is rotatably connected to the tail end of the push rod assembly 3, and the upper end of each rotating arm 222 is rotatably connected to the lower clamping arm 221.

As shown in fig. 3-7, the putter assembly 3 may include: the upper clamping assembly 21 is arranged on the first push rod 31 and is detachably connected with the first push rod 31, the first push rod 31 moves to drive the upper clamping assembly 21 to move in the up-down direction, the second push rod 32 is sleeved in the first push rod 31 and is slidably connected with the first push rod 31, the third push rod 33 is detachably connected with the second push rod 32, and the rotating arm 222 is movably connected with the third push rod 33. Thus, the first push rod 31 moves relative to the second push rod 32, and can drive the upper clamping assembly 21 to move in the up-down direction, the third push rod 33 can drive the rotating arm 222 to move so as to drive the lower clamping assembly 22 to expand or contract, the upper clamping assembly 21 is detachably connected with the first push rod 31, and the third push rod 33 is detachably connected with the second push rod 32, so that after the separable occlusion clamping device 100 is detached, the first push rod 31 and the second push rod 32 can be withdrawn, the clamping assembly 2 and the third push rod 33 are retained, the rotating arm 222 is equal to the inside of the heart structure 8, and at this time, the clamping assembly 2 clamps the valve leaflet 81.

The lower clamping assembly 22 further comprises a base 5 and a second pull wire 42, the third push rod 33 passes through the base 5 to be detachably connected with the second push rod 32, the base 5 is provided with a first wire passing hole 51 suitable for the second pull wire 42 to pass through, the second pull wire 42 passes through the bottom of the base 5 from the first wire passing hole 51, both ends of the second pull wire 42 are connected with the operating handle, and the lower clamping arm 221 is rotatably arranged on the base 5. In other words, the base 5 is sleeved on the third push rod 33, two ends of the second pull wire 42 are connected with the operating handle, at least two first threading holes 51 are formed in the base 5, the second pull wire 42 penetrates through the bottom of the base 5 from one first threading hole 51 and then penetrates out from the other first threading hole 51, and the lower end of the lower clamping arm 221 is rotatably connected with the base 5, so that the position of the base 5 can be controlled and adjusted through the second pull wire 42, and the position of the lower clamping arm 221 relative to the third push rod 33 is further controlled. As shown in fig. 1, 8-10, when the position of the second pulling wire 42 is kept unchanged, the position of the lower clamping arm 221 is kept unchanged and is in an open state, and the first pushing rod 31 is pushed to move downwards to drive the upper clamping assembly 21 to move towards the lower clamping assembly 22 until the upper clamping assembly 21 is connected with the base 5; when the second push rod 32 drives the third push rod 33 to move towards the base 5, the third push rod 33 is connected to the rotating arm 222 to drive the rotating arm 222 to move, and the upper end of the rotating arm 222 is connected to the lower clamping arm 221 to drive the lower clamping arm 221 to rotate.

As shown in fig. 15 and 16, the detachable conveying clamping device 100 further includes a locking plate 52, the locking plate 52 is disposed in the base 5, the locking plate 52 is provided with a locking hole 53 and a second threading hole 54, the third push rod 33 passes through the locking hole 53 and the base 5 to be connected to the second push rod 32, and the second threading hole 54 is used for passing through the second threading 42.

The locking plate 52 has a locking state and an unlocking state, when the second pulling wire 42 is in the loosening state, the locking hole 53 is in the locking state to lock the third pushing rod 33, the third pushing rod 33 cannot move in the locking hole 53, as shown in fig. 32, and the vertical distance between the axis of the second threading hole 54 and the axis of the first threading hole 51 is L; when the second wire 42 is in the tensioned state, the locking piece 52 is in the released state, the locking hole 53 is deformed to release the third push rod 33, the third push rod 33 is movable in the locking hole 53, as shown in fig. 33, the perpendicular distance between the axis of the second threading hole 54 and the axis of the first threading hole 51 is W, wherein W < L, that is, the central axis of the second threading hole 54 does not coincide with the central axis of the first threading hole 51, and the central axis of the second threading hole 54 is disposed adjacent to the third push rod 33 with respect to the central axis of the first threading hole 51, thus, when the second wire 42 is in a relaxed state, the locking hole 53 locks the third push rod 33, at which time the third push rod 33 cannot move, when the second pull wire 42 is tensioned, the second threading hole 54 is aligned with the first threading hole 51, the second pull wire 42 drives the locking plate 52 to deform, and the locking hole 53 is enlarged, so that the third push rod 33 can move up and down in the locking hole 53.

And the third push rod 33 is arranged in the lock hole 53 and the base 5 in a penetrating way and is detachably connected with the second push rod 32, so that the second push rod 32 is convenient to withdraw when the second push rod is detached.

In other embodiments of the present invention, the detachable delivery gripping device 100 may further comprise an occluder 1, wherein the occluder 1 is used to occlude the regurgitation gap between the leaflets 81 so as to reduce regurgitation, and the gripping assembly 2 is used to capture the leaflets 81. As shown in fig. 1-14, the occluding device 1 is arranged above the clamping assembly 2 so that after the clamping assembly 2 clamps the valve leaflets 81, the occluding device 1 can occlude the regurgitation gap between the valve leaflets 81 to reduce regurgitation.

In some embodiments of the present invention, the upper clamping assembly 21 is disposed above the lower clamping assembly 22, the blanking plug 1 is disposed above the upper clamping assembly 21, and when the clamping assembly 2 is in the closed state, the upper clamping assembly 21 is folded downward, and the lower clamping assembly 22 is folded upward outside the upper clamping assembly 21. When the clamping assembly 2 is switched to the unfolding state, the lower clamping assembly 22 and the upper clamping assembly 21 are separated and unfolded, and the upper clamping assembly 21 is unfolded under the action of the material characteristic acting force after losing the constraint of the lower clamping assembly 22.

The upper clamping assembly 21 may include at least two upper clamping arms 211, the lower clamping assembly 22 may include at least two lower clamping arms 221 coupled to the upper clamping arms 211, that is, the upper clamping assembly 21 may include two or more upper clamping arms 211, the lower clamping assembly 22 may include two or more lower clamping arms 221, the upper clamping arms 211 are disposed above the lower clamping arms 221 and are disposed in one-to-one correspondence with the lower clamping arms 221, and the upper clamping arms 211 and the lower clamping arms 221 may be separated by the upper clamping arms 211 and the lower clamping arms 221, and the upper clamping arms 211 and the lower clamping arms 221 may be separately controlled and adjusted, respectively, so as to facilitate capturing the clamping leaflets 81.

Alternatively, the upper and lower grasping

arms

211 and 221 can be adjusted, and the upper and lower grasping

arms

211 and 221, by adjusting the distance between the upper and lower grasping

arms

Further, the upper clamping assembly 21 can be fixedly connected with the occluder 1, the upper clamping assembly 21 is connected to the lower end of the occluder 1, the upper clamping assembly 21 comprises a plurality of upper clamping arms 211, the plurality of upper clamping arms 211 are distributed along the circumferential direction of the occluder, when the upper clamping assembly 211 is in the unfolded state, the plurality of upper clamping arms 211 are unfolded, and the occluder 1 is located in an opening formed by unfolding the plurality of upper clamping arms 211.

Further, the detachable conveying clamping device 100 further comprises a push rod assembly 3, the push rod assembly 3 comprises a plurality of push rods, the axial length of the push rod assembly 3 is adjustable, the plugging device 1 and the upper clamping assembly 21 are both arranged on the push rod assembly 3, and the plugging device 1 and the upper clamping assembly 21 can be adjusted by adjusting the push rod assembly 3, so that the upper clamping assembly 21 and the plugging device 1 can move in the up-down direction. The upper clamping assembly 21 and the lower clamping assembly 22 can be arranged at different positions of the push rod assembly 3, and relative movement of the upper clamping assembly 21, the lower clamping assembly 22 and the plugging device 1 in the vertical direction can be realized by moving different push rods of the push rod assembly 3.

Holding device 100 is carried to detachable still includes first acting as go-between 41, the one end and the push rod subassembly 3 rotatable coupling of going up centre gripping arm 211, the other end of going up centre gripping arm 211 forms the free end, first acting as go-between 41 and the free end of last centre gripping arm 211 are connected in order to drive centre gripping arm 211 and rotate, because the one end of going up centre gripping arm 211 is fixed, and like this, the free end that can stimulate centre gripping arm 211 through first acting as go-between 41 is movable in upper and lower direction, thereby can drive centre gripping arm 211 and rotate, the angle between centre gripping arm 211 and the push rod subassembly 3 is in order to adjust the position of centre gripping arm 211 in the change. The plurality of upper gripping arms 211 may be pulled closer together toward the upper occluder 1 by, for example, the first pull wire 41 to adjust the position of the upper gripping arms 211 so as to grip the valve leaflets 81.

The detachable conveying clamping device 100 further includes a rotating arm 222, the rotating arm 222 is obliquely connected between the push rod assembly 3 and the lower clamping arm 221 and is respectively rotatably connected with the lower clamping arm 221 and the push rod assembly 3, and the rotating arm 222 rotates to drive the lower clamping arm 221 to rotate relative to the push rod assembly 3.

As shown in fig. 3-7, the putter assembly 3 may include: the plugging device comprises a first push rod 31, a second push rod 32 and a third push rod 33, wherein the plugging device 1 and the upper clamping component 21 are arranged on the first push rod 31 and detachably connected with the first push rod 31, the first push rod 31 moves to drive the plugging device 1 and the first clamping component 2 to move in the up-down direction, the second push rod 32 is sleeved in the first push rod 31 and slidably connected with the first push rod 31, the third push rod 33 is detachably connected with the second push rod 32, and the rotating arm 222 is movably connected with the third push rod 33. Like this, first push rod 31 is movable relative to second push rod 32, can drive and go up centre gripping subassembly 21 and occluder 1 and move in upper and lower direction, the activity of third push rod 33 can drive the activity of swinging boom 222, occluder 1 and last centre gripping subassembly 21 can dismantle with first push rod 31 and be connected, third push rod 33 can dismantle with second push rod 32 and be connected, like this, after detachable shutoff clamping device 100 dissociates, first push rod 31 and second push rod 32 can withdraw from, keep centre gripping subassembly 2 and occluder 1 and third push rod 33, swinging boom 222 equals in the cardiac structure 8, centre gripping subassembly 2 centre gripping valve leaf 81 this moment, occluder 1 seals the back flow clearance between the valve leaf 81.

The lower clamping assembly 22 further comprises a base 5 and a second pull wire 42, the third push rod 33 passes through the base 5 to be detachably connected with the second push rod 32, the base 5 is provided with a first wire passing hole 51 suitable for the second pull wire 42 to pass through, the second pull wire 42 passes through the bottom of the base 5 from the first wire passing hole 51, both ends of the second pull wire 42 are connected with the operating handle, and the lower clamping arm 221 is rotatably arranged on the base 5. In other words, the base 5 is sleeved on the third push rod 33, two ends of the second pull wire 42 are connected with the operating handle, at least two first threading holes 51 are formed in the base 5, the second pull wire 42 penetrates through the bottom of the base 5 from one first threading hole 51 and then penetrates out from the other first threading hole 51, and the lower end of the lower clamping arm 221 is rotatably connected with the base 5, so that the position of the base 5 can be controlled and adjusted through the second pull wire 42, and the position of the lower clamping arm 221 relative to the third push rod 33 is further controlled. As shown in fig. 1, 8-10, when the position of the second pulling wire 42 is kept unchanged, the lower clamping arm 221 is kept unchanged and is in an open state, and at this time, the first pushing rod 31 is pushed to move downwards to drive the occluder 1 and the clamping assembly 2 to move towards the lower clamping assembly 22 until the occluder 1 and the upper clamping assembly 21 are connected with the base 5; when the second push rod 32 drives the third push rod 33 to move towards the base 5, the third push rod 33 is connected to the rotating arm 222 to drive the rotating arm 222 to move, and the upper end of the rotating arm 222 is connected to the lower clamping arm 221 to drive the lower clamping arm 221 to rotate.

As shown in fig. 15 and 16, the detachable conveying clamping device 100 further includes a locking plate 52, the locking plate 52 is disposed in the base 5, the locking plate 52 is provided with a locking hole 53 and a second threading hole 54, and the third push rod 33 passes through the locking hole 53 and the base 5 to be connected to the second push rod 32; the second threading hole 54 is used for passing through the second threading hole 54, the locking plate 52 has a locking state and a loosening state, when the second threading wire 42 is in the loosening state, the locking hole 53 locks the third push rod 33, the third push rod 33 cannot move in the locking hole 53, as shown in fig. 32, at this time, the vertical distance between the axis of the second threading hole 54 and the axis of the first threading hole 51 is L; when the second wire 42 is in a tensioned state, the locking hole 53 is deformed to release the third push rod 33, the third push rod 33 is movable in the locking hole 53, as shown in fig. 33, the perpendicular distance between the axis of the second threading hole 54 and the axis of the first threading hole 51 is W, wherein W < L, that is, the central axis of the second threading hole 54 does not coincide with the central axis of the first threading hole 51, and the central axis of the second threading hole 54 is disposed adjacent to the third push rod 33 with respect to the central axis of the first threading hole 51, thus, when the second wire 42 is in the slack state, the locking hole 53 is in the locking state to lock the third push rod 33, at which time the third push rod 33 cannot move, when the second pull wire 42 is tensioned, the second threading hole 54 is aligned with the first threading hole 51, the second pull wire 42 drives the locking plate 52 to deform, and the locking hole 53 is enlarged, so that the third push rod 33 can move up and down in the locking hole 53.

The separable transport jig 100 according to one specific example of the present invention is described below with reference to the drawings.

As shown in fig. 1 to 20, the detachable conveying clamping device 100 includes an occluder 1, a clamping assembly 2, a push rod assembly 3, a rotating arm 222, a first pull wire 41, a second pull wire 42, a base 5, a locking piece 52, and the like.

Specifically, the push rod assembly 3 may include a first push rod 31, a second push rod 32, and a third push rod 33, which are coaxially disposed, wherein the first push rod 31 and the second push rod 32 are slidably coupled and sleeved on the second push rod 32, and the third push rod 33 is disposed below the second push rod 32 and detachably coupled to the second push rod 32.

The clamping assembly 2 comprises an upper clamping arm 211 and a lower clamping arm 221, wherein the upper clamping arm 211 and the lower clamping arm 221 are arranged in a one-to-one correspondence manner, and the upper clamping arm 211 is arranged above the lower clamping arm 221. As shown in fig. 1 to 13, the number of the upper holding arms 211 and the number of the lower holding arms 221 may be two, the two upper holding arms 211 are respectively disposed at two radial sides of the push rod assembly 3, and the two upper holding arms 211 are respectively fixedly connected to the occluder 1 and can be shaped by material characteristics to be in an open state.

The occluder 1 and the upper clamping arm 211 are sleeved on the first push rod 31 and detachably connected with the first push rod 31, the first push rod 31 can slide to drive the occluder 1 and the upper clamping arm 211 to move, the first pull wire 41 is connected with the upper end of the upper clamping arm 211, the position of the upper end of the upper clamping arm 211 can be adjusted by pulling the first pull wire 41, when the first pull wire 41 is tensioned, the upper end of the upper clamping arm 211 is drawn close to the direction of the first push rod 31, when the first pull wire 41 is loosened, the upper clamping arm 211 is restored to an initial opening state, the position of the upper clamping arm 211 opened can be adjusted by adjusting the length of the first pull wire 41, and therefore the valve leaflet 81 can be repeatedly captured, and effective capture of the valve leaflet 81 is achieved.

As shown in fig. 1, it is shown in fig. 1 that the upper holding arm 211 can be pulled by the first pulling wire 41 to move between the closed position and the first pushing rod 31 and the position far away from the first pushing rod 31. The first wire 41 and the upper grip arm 211 are positioned in the unfolded state in fig. 1, and the first wire 41 'and the upper grip arm 211' are positioned in the unfolded state in fig. 1 and moved to another position after pulling the first wire 41.

The base 5 is sleeved on the third push rod 33, the locking plate 52 is arranged in the base 5 and is provided with a locking hole 53 suitable for the third push rod 33 to pass through, wherein the locking plate 52 can be formed by elastic materials, the shape of the locking hole 53 can be changed, so that the third push rod 33 can be locked and loosened, the base 5 is provided with a first threading hole 51, the locking plate 52 is provided with a second threading hole 54, the second threading wire 42 passes through the first threading hole 51 and the second threading hole 54 to pass through the bottom of the base 5, wherein two ends of the second threading wire 42 are respectively connected with the operating handle, and the positions of the base 5 and the lower clamping arm 221 can be controlled through the second threading wire 42.

Specifically, when the second wire 42 is loosened, the locking plate 52 locks the push rod, when the second wire 42 is tightened, the second wire 42 is straightened, because the central axes of the first wire hole 51 and the second wire hole 54 have a certain difference, when the second wire 42 is straightened, the second wire hole 54 moves outwards, the second wire 42 drives the locking plate 52 to deform, so that the locking hole 53 deforms and enlarges, for example, as shown in fig. 17-20, when the locking plate 52 is in a locking state, the locking hole 53 may be formed in a diamond shape, and when the locking plate 52 deforms, the locking hole 53 gradually changes from the diamond shape to a square shape, so that the locking hole 53 enlarges, so that the locking plate 52 changes from the locking state to a loosening state, and further, the third push rod 33 can move up and down in the locking hole 53.

The lower end of the lower clamp arm 221 is rotatably connected to the base 5, for example, the lower end of the lower clamp arm 221 may be connected to the base 5 by a shaft hole and a rotation shaft. The rotating arm 222 is obliquely arranged below the lower clamping arm 221, the lower end of the rotating arm 222 is rotatably connected with the lower end of the third push rod 33, and the upper end of the rotating arm 222 is rotatably connected with the lower clamping arm 221. As shown in fig. 8 to fig. 14, when the lower clamping arm 221 and the upper clamping arm 211 are in a clamping state, the first push rod 31 drives the occluder 1 to move toward the base 5 to connect with the base 5, wherein the occluder 1 is suitable for being connected with the base 5 in a snap-fit manner, so that the occluder 1 is connected and fixed with the base 5. When the second push rod 32 drives the third push rod 33 to move toward the base 5, the lower end of the third push rod 33 is connected to the lower end of the rotating arm 222 to drive the rotating arm 222 to move, and the upper end of the rotating arm 222 is connected to the lower clamping arm 221 to drive the lower clamping arm 221 to close to fold toward the occluder 1.

The following describes a using process and a method of the separable transporting jig 100 according to an embodiment of the present invention with reference to the accompanying drawings.

The detachable delivery clamp 100 may be coupled to the delivery device 62 and the control device 61, wherein the control device 61 may be used to control the target orientation of the instrument, the delivery device 62 may be used to move the instrument to access the target site, and the detachable delivery clamp 100 may be used to implant within the cardiac structure 8.

As shown in fig. 21, separable transporting and holding device 100 is reached to left atrium 82 by control device 61 and transporting device 62, and at this time, separable transporting and holding device 100 is stabilized in left atrium 82 by control device 61 and transporting device 62, and at this time, separable transporting and holding device 100 is in a closed state as shown in fig. 2 and 6. As shown in fig. 22 in combination with fig. 3 and 4, the second pull wire 42 passes through the base 5 and the locking plate 52, the locking plate 52 is opened when the second pull wire 42 is pulled, the third push rod 33 is movable up and down in the locking hole 53, so that the base 5 moves towards the occluder 1 under the action of the second pull wire 42, and the lower holding arm 221 connected with the base 5 is opened.

As shown in fig. 23 in combination with fig. 1, the occluder 1 is connected with the clamping assembly 2 in the left atrium 82, specifically, the clamping assembly 2 is kept in a spread state under the force of the second pull wire 42, the base 5 and the third push rod 33, and the occluder 1 is moved to the left ventricle 83 by the first push rod 31 until the lower end of the occluder 1 is connected with the base 5.

As shown in fig. 24, the upper holding arm 211 is folded toward the occluder 1 by adjusting the first pull wire 41 to rotate the upper holding arm 211; as shown in fig. 25, the detachable delivery clamp device 100 is moved to the left ventricle 83 by the first pushing rod 31, and the lower clamp arm 221 is in the expanded state, and the occluder 1 and the clamp assembly 2 are brought close to the lower surface edge of one leaflet 81 by the adjustment of the delivery device 62 and the first pushing rod 31.

As shown in fig. 26, the length and tightness of the first wire 41 are adjusted to control the capturing state of one of the upper and lower holding

arms

211 and 221, and when the upper holding arm 211 is adjusted to a proper position and the first wire 41 releases the upper holding arm 211 to return to the unfolded state, the upper holding arm 211 presses the upper surface edge of the leaflet 81 when returning, and particularly, the upper surface edge of the leaflet 81 can be better captured by operating the first wire 41 several times.

As shown in fig. 26, the degree of tightness of the first wire 41 is adjusted to control the capturing state of the other set of the upper and lower holding

arms

211 and 221, and when the other first wire 41 is released, the other set of the upper holding arms 211 comes back to press-fit the upper surface edge of the other leaflet 81, and is adjusted by operating the first wire 41 a plurality of times to better capture the upper surface edge of the other leaflet 81.

As shown in fig. 27 and in combination with fig. 9-14, the first push rod 31 and the occluder 1 adjust the third push rod 33 to move towards the occluder 1 and the base 5 under the stabilization of the delivery device 62, the third push rod 33 drives the rotating arm 222 to rotate to push the lower clamping arm 221 to close at the same time to fold towards the occluder 1, as shown in fig. 26, after the control device 61 and the delivery device 62 are separated, the first push rod 31 and the second push rod 32 are withdrawn, and only the clamping assembly 2, the occluder 1 and the rotating arm 222 are remained.

Another use and method of the separable transporting jig 100 according to the embodiment of the present invention will be described with reference to fig. 21 to 22 and fig. 28 to 31.

As shown in fig. 28, the clamping assembly 2 moves the lower surface edge of the leaflet 81 astride the valve, and the lower clamping assembly 22 is moved integrally to the lower surface edge of the leaflet 81 by the second push rod 32 when the clamping assembly 2 is in the deployed state. As shown in fig. 29, after the lower clamping assembly 22 is stabilized by the third pushing rod 33 and the delivery device 62, the occluder 1 and the upper clamping assembly 21 are moved by the first pushing rod 31 to abut against the lower clamping assembly 22, and the upper clamping assembly 21 captures the upper surface edge of the leaflet 81 during the movement.

As shown in fig. 30, the position adjustment of the capturing leaflet 81, in particular, the open-close state of the upper grasping arm 211 is controlled by the tightness of the first pulling wire 41 and the second pulling wire 42, when the first pulling wire 41 is released, the upper grasping arm 211 is restored to the unfolded state, and when restored, the upper surface edge of the leaflet 81 is pressed, wherein the upper surface edge of the leaflet 81 can be better captured by operating the first pulling wire 41 a plurality of times. The same method can adjust the clamping state of the other upper clamping arm 211, the first wire 41 and the leaflet 81.

Referring to fig. 30 and 31, the first push rod 31 and the occluder 1 adjust the third push rod 33 to move towards the occluder 1 and the base 5 under the stabilization of the delivery device, the third push rod 33 drives the rotating arm 222 to rotate to push the lower clamping arm 221 to close at the same time to fold towards the occluder 1, as shown in fig. 27, after the control device 61 and the delivery device 62 are separated, the first push rod 31 and the second push rod 32 are withdrawn, and only the clamping assembly 2, the occluder 1 and the rotating arm 222 are remained.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A detachable conveying clamping device is characterized by comprising:

the clamping assembly comprises an upper clamping assembly and a lower clamping assembly, the upper clamping assembly is detachably matched with the lower clamping assembly, the clamping assembly has an unfolding state and a closing state and can move between the unfolding state and the closing state, when the clamping assembly is in the closing state, one of the upper clamping assembly and the lower clamping assembly is contracted in the other of the upper clamping assembly and the lower clamping assembly so as to be suitable for being placed into a sheath tube, and when the clamping assembly is in the unfolding state, the upper clamping assembly and the lower clamping assembly are separated and unfolded and can be adjusted so as to be suitable for capturing and clamping valve leaflets.

2. The detachable transport gripper of claim 1, further comprising an occluder disposed above the gripper assembly, the occluder configured to occlude a regurgitant gap between leaflets.

3. The detachable conveying gripping device of claim 1 or 2, wherein the upper gripping assembly comprises at least two upper gripping arms, the lower gripping assembly comprises at least two lower gripping arms corresponding to the upper gripping arms, the at least two upper gripping arms are folded in the at least two lower gripping arms when the gripping assembly is in the closed state, and the at least two upper gripping arms and the at least two lower gripping arms are unfolded when the gripping assembly is in the unfolded state.

4. The detachable transport clamp of claim 3, wherein the upper and lower clamp arms are rotatable and movable in an up-down direction to be adapted to clamp a leaflet.

5. The detachable transport clamp of claim 4, further comprising a pusher assembly having an adjustable axial length, wherein the stopper and the clamp assembly are disposed on the pusher assembly.

6. The detachable conveying clamping device of claim 5, further comprising a first pulling wire, wherein one end of the upper clamping arm is rotatably connected to the push rod assembly, the other end of the upper clamping arm forms a free end, and the first pulling wire is connected to the free end of the upper clamping arm to drive the upper clamping arm to rotate.

7. The separable conveying clamping device as recited in claim 5, further comprising a rotating arm disposed below the lower clamping arm, wherein the rotating arm is disposed between the push rod assembly and the lower clamping arm and is rotatably connected to the lower clamping arm and the push rod assembly, and the rotating arm rotates to drive the lower clamping arm to rotate relative to the push rod assembly.

8. The separable transport gripper of claim 7, wherein the pusher bar assembly comprises:

the first push rod is provided with the upper clamping assembly, the upper clamping assembly is detachably connected with the first push rod, and the first push rod moves to drive the upper clamping assembly to move in the vertical direction;

the second push rod is sleeved in the first push rod and is connected with the first push rod in a sliding manner;

the third push rod, the third push rod with the second push rod can be dismantled and be connected, the swinging boom with third push rod rotatable coupling, lower centre gripping subassembly is installed the third push rod outside.

9. The separable conveying and clamping device as recited in claim 8, wherein the lower clamping assembly further comprises a base and a second pull wire, the third push rod passes through the base and is detachably connected with the second push rod, the base is provided with a first wire passing hole suitable for the second pull wire to pass through, the second pull wire passes through the bottom of the base from the first wire passing hole, both ends of the second pull wire are connected with the operating handle, and the lower clamping arm is rotatably arranged on the base.

10. The detachable transport holding device of claim 9, further comprising a locking plate disposed within said base, said locking plate being provided with:

the third push rod penetrates through the lock hole and is connected with the base and the second push rod; and

a second string passing hole for passing the second string;

the locking plate is in a locking state and a loosening state, when the second pull wire is in the loosening state, the third push rod is locked by the locking hole, and the vertical distance between the axis of the second wire threading hole and the axis of the first wire threading hole is L; when the second pull wire is in a tensioned state, the lock hole deforms to loosen the third push rod, the third push rod can move in the lock hole, the vertical distance between the axis of the second wire threading hole and the axis of the first wire threading hole is W, and W is smaller than L.

11. The separable transport gripper of claim 7, wherein the pusher bar assembly comprises:

the plugging device and the upper clamping assembly are arranged on the first push rod and are detachably connected with the first push rod, and the first push rod moves to drive the plugging device and the upper clamping assembly to move in the vertical direction;

the third push rod, the third push rod with the second push rod can be dismantled and be connected, swinging boom and third push rod rotatable coupling, lower centre gripping subassembly is installed the third push rod outside.

12. The separable conveying and clamping device as recited in claim 11, wherein the lower clamping assembly further comprises a base and a second pull wire, the third push rod passes through the base and is detachably connected with the second push rod, the base is provided with a first wire passing hole suitable for the second pull wire to pass through, the second pull wire passes through the bottom of the base from the first wire passing hole, both ends of the second pull wire are connected with the operating handle, and the lower clamping arm is rotatably arranged on the base.

13. The detachable transport gripping apparatus of claim 12, further comprising a locking plate disposed within the base, the locking plate being provided with:

a second string passing hole for passing the second string;

14. The detachable transport clamp of claim 12, wherein the stopper is adapted to snap-fit into engagement with the base.

15. The separable conveying and clamping device as recited in claim 1, wherein the upper clamping assembly is disposed above the lower clamping assembly, and when the clamping assemblies are in the closed state, the upper clamping assembly is retracted downward and the lower clamping assembly is retracted outside the upper clamping assembly.