CN219782848U

CN219782848U - Bendable heart valve replacement conveying system

Info

Publication number: CN219782848U
Application number: CN202320690802.4U
Authority: CN
Inventors: 蔡睿; 巨达; 冯彬; 贺志秀; 吴明明; 陈大凯
Original assignee: Koka Nantong Lifesciences Co Ltd
Current assignee: Koka Nantong Lifesciences Co Ltd
Priority date: 2023-03-08
Filing date: 2023-03-31
Publication date: 2023-10-03
Anticipated expiration: 2033-03-31
Also published as: CN219941533U; CN118615064A; CN118615063A; CN219782849U; CN219782846U; CN118615062A; CN219782847U

Abstract

The utility model discloses a bendable heart valve replacement conveying system, which relates to the technical field of medical appliances and comprises an assembly disc, a linkage mechanism and a catheter; the catheter comprises a hanging lug cladding pipe which is connected with the linkage mechanism; the linkage mechanism comprises a hanging lug cladding pipe fixing seat and a shaft moving rod, the hanging lug cladding pipe fixing seat is axially and slidably arranged on the assembly disc, the hanging lug cladding pipe fixing seat is fixedly connected with the hanging lug cladding pipe, and the shaft moving rod is arranged on the outer side of the hanging lug cladding pipe; the proximal end of the shaft moving rod corresponds to the distal end side of the hanging ring cladding pipe fixing seat, the shaft moving rod can axially move, the hanging ring cladding pipe fixing seat is driven by the shaft moving rod through the proximal end side corresponding to the shaft moving rod, the hanging ring cladding pipe is further controlled, the shaft moving rod can serve as a linkage mechanism, the hanging ring cladding pipe fixing seat is driven through the management and control mechanism, and therefore the hanging ring cladding pipe fixing seat does not need to be independently driven again.

Description

Bendable heart valve replacement conveying system

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a bendable heart valve replacement conveying system.

Background

The heart is divided into left and right parts, each part comprising a ventricle and an atrium, the ventricle and the atrium are separated by a ventricular septum and a atrial septum, valves for preventing blood reflux are arranged between the atrium and the ventricle, and the normal valves only allow blood to flow in one direction in the heart.

Wherein mitral regurgitation is due to valve insufficiency, and when the left ventricle contracts, blood flow is injected into the aorta and the left atrium with smaller resistance from the left ventricle, and at this time, the left atrium receives blood regurgitated from the left ventricle in addition to blood returned from the pulmonary veins, so that the pressure of the left atrium rises to cause the pressure of the pulmonary veins and pulmonary capillaries to rise, and then dilate and congestion occurs; at the same time, the capacity load of the left ventricle in diastole increases, and the left ventricle expands. When the acute mitral valve is not closed fully, a sudden increase in the left atrium with a large amount of regurgitated blood can cause a sudden rise in left atrium and pulmonary vein pressure, causing acute pulmonary edema.

Tricuspid regurgitation is generally caused by pulmonary hypertension, right ventricular enlargement and tricuspid valve ring expansion, and symptoms such as hypodynamia, ascites, edema, liver pain, dyspepsia and anorexia can be caused after tricuspid valve regurgitation, so that symptoms of right heart failure are aggravated, and even death is directly caused.

Since the transcatheter operation has the advantages of small trauma, quick recovery and the like, more and more operations begin to be performed by adopting the transcatheter operation, most of the valve replacement operation of the valve with the two/three tricuspid valve is also changed from the early surgical operation mode to the transcatheter operation of the valve with the two/three tricuspid valve, so that the operation of the valve with the catheter replacement operation is rapidly developed, the role of the operating handle for conveying the catheter in the operation is particularly important, because the implantation process of the valve with the two/three tricuspid valve needs to be controlled by the handle, the conventional handle generally needs to have an independent external power source for each movement component, the operation is complex, the misoperation is easy, the conventional handle does not have a bending adjusting function, the bending adjusting handle needs to be independently increased, the difficulty of the operation of the handle is increased, the operation of the handle in the operation is not very convenient, the conveyor handle which can be conveniently operated in the operation is needed, the stable, accurate and controllable implantation of the valve at a designated position is performed by the catheter intervention method, and the bending adjusting handle does not need to be additionally used.

Disclosure of Invention

Aiming at the problems that in the prior art, each part of a catheter of a handle needs an independent operation power source, which is not beneficial to the use of operators and is inconvenient to operate, the utility model provides an adjustable heart valve replacement conveying system, thereby solving the problem that the operation of the handle is inconvenient.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a heart valve replacement conveying system with adjustable bending comprises an assembly disc, a linkage mechanism and a catheter;

the catheter comprises a hanging lug cladding pipe which is connected with the linkage mechanism;

the linkage mechanism comprises a hanging lug cladding pipe fixing seat and a shaft moving rod, the hanging lug cladding pipe fixing seat is axially and slidably arranged on the assembly disc, the hanging lug cladding pipe fixing seat is fixedly connected with the hanging lug cladding pipe, and the shaft moving rod is arranged on the outer side of the hanging lug cladding pipe;

the proximal end of the shaft moving rod corresponds to the distal end side of the hanging lug cladding pipe fixing seat, and the shaft moving rod can axially move.

Preferably, the distal end of the hanger cladding tube fixing seat is provided with a jacking part, the outer side of the jacking part is provided with a bulge, and the shaft moving rod is propped against the inner side of the bulge at the outer side of the jacking part.

Preferably, the surface of the hanger cladding tube fixing seat, which is contacted with the assembly disc, is provided with a plurality of sliding parts, and the hanger cladding tube fixing seat is in sliding connection with the assembly disc through the sliding parts.

Preferably, a spring is arranged at the proximal end of the hanging ring cladding pipe fixing seat, and the other end of the spring is propped against the assembly disc.

Preferably, the proximal end of the hanger cladding tube fixing seat is provided with a spring stabilizing part, and the distal end of the spring is arranged in the spring stabilizing part.

Preferably, a limiting notch is formed in one side of the hanging-ring cladding-pipe fixing seat, the limiting notch is formed in the assembly disc, a limiting portion is arranged on the side face of the hanging-ring cladding-pipe fixing seat, and the limiting notch corresponds to the limiting portion.

Preferably, a bending adjustment mechanism is arranged at the proximal end of the linkage mechanism, and is mounted at the proximal end part of the assembly disc, and the bending adjustment mechanism controls bending of the catheter.

Preferably, the bending mechanism comprises a bending adjusting sleeve, the bending adjusting sleeve is rotatably arranged at the proximal end part of the assembly disc, an internal thread is arranged on the inner surface of the bending adjusting sleeve, a guide rod is arranged inside the bending adjusting sleeve, one end of the guide rod extends out of the bending adjusting sleeve and is fixedly arranged on the assembly disc, a wire driving part is axially and slidably arranged on the guide rod, an external thread is arranged on the outer side of the wire driving part and is in threaded connection with the internal thread of the bending adjusting sleeve, the wire driving part is connected with a stay wire of the bending adjusting tube, the bending adjusting tube is positioned on the outer side of the hanger cladding tube, the proximal end of the bending adjusting tube is fixedly arranged on the assembly disc, and the wire driving part can be driven to axially move along the guide rod by rotation of the bending adjusting sleeve.

Preferably, the distal end of the bending mechanism is connected with a spring, the proximal end of the spring is connected with the assembly disc through the bending mechanism, the proximal end of the spring is arranged at the distal end of the guide rod, and the distal end of the spring is connected with the hanger cladding tube fixing seat.

Preferably, the proximal end of the spring is connected with the distal end of the guide rod through a blocking ring, the blocking ring is mounted at the distal end of the guide rod, the blocking ring is provided with a spring stabilizing part, and the proximal end of the spring is mounted in the spring stabilizing part.

Preferably, the proximal end of the bending sleeve extends outside the mounting plate, and the rotation of the bending sleeve is directly controlled by rotating the proximal end of the bending sleeve.

Preferably, a manual rotating handle is arranged at the proximal end of the bending adjustment sleeve, and the peripheral diameter of the manual rotating handle is larger than that of the bending adjustment sleeve.

Preferably, the driving piece comprises a driving block and a stay wire fixing seat, the driving block is located at the far end of the stay wire fixing seat, external threads are arranged on the outer side of the driving block and are matched with the internal threads of the bending adjusting sleeve, the driving block is provided with a wire passing hole, the wire passing hole penetrates through a stay wire of the bending adjusting pipe, and the stay wire is fixedly connected with the stay wire fixing seat.

Compared with the prior art, the utility model provides a bendable heart valve replacement delivery system. The beneficial effects are as follows:

1. the hanger cladding pipe fixing seat is driven by the shaft moving rod through the proximal end side corresponding to the shaft moving rod, the hanger cladding pipe fixing seat is driven by the shaft moving rod, the hanger cladding pipe is controlled, the shaft moving rod can be used as a linkage mechanism, for example, the hanger cladding pipe fixing seat is driven by the shaft moving rod through the management and control mechanism, and therefore, a power source is not required to be independently arranged again for driving the hanger cladding pipe fixing seat.

2. Through the separation setting of axle shift pole and hangers cladding pipe fixing base, be provided with spacing notch and spacing portion again, can guarantee that hangers cladding pipe fixing base is in correct position all the time, can not lead to the hangers cladding pipe fixing base to take place excessive displacement because of the displacement of axle shift pole is too big.

3. Compared with the traditional bent pipe (handle) separated from the conveying handle, the bent pipe (handle) and the conveying handle are combined, the integrated design effectively reduces the gap between the bent pipe and the guide pipe, reduces the diameter of the conveying guide pipe, and the bent pipe (handle) and the conveying handle are integrated, so that the operation difficulty of operators is reduced, the operation is convenient, and the operation required by implanting the valve can be completed on one handle.

Drawings

The specific features of the utility model related to the utility model are shown in the appended claims. A better understanding of the features and advantages of the utility model in accordance with the present utility model will be obtained by reference to the exemplary embodiments and the accompanying drawings that are described in detail below. The drawings are briefly described as follows:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a schematic view I of the mounting plate of the present utility model;

FIG. 4 is a schematic view II of the mounting plate of the present utility model;

FIG. 5 is a schematic illustration of the structure of the utility model with the housing removed;

FIG. 6 is an exploded view of the control mechanism, electric mechanism of the present utility model;

FIG. 7 is a schematic diagram of a control mechanism and an electric mechanism according to the present utility model

FIG. 8 is a schematic diagram of a linkage mechanism according to the present utility model;

FIG. 9 is an exploded view of the linkage of the present utility model;

FIG. 10 is a schematic diagram of a bending mechanism according to the present utility model;

FIG. 11 is an exploded view of the bending mechanism of the present utility model;

FIG. 12 is a schematic view of the inside of the bending mechanism of the present utility model;

FIG. 13 is an enlarged view of a portion of FIG. 12 at A;

FIG. 14 is a cross-sectional view of a guide bar of the present utility model;

FIG. 15 is a schematic view of a fixing base for a bent pipe of the present utility model;

FIG. 16 is a schematic view of a holder for a hanger cladding tube according to the present utility model;

FIG. 17 is a cross-sectional view of a holder for a hanger cladding tube in accordance with the present utility model;

FIG. 18 is a schematic view of a moving block and a shaft of the present utility model;

FIG. 19 is a cross-sectional view of a shift block and a shift lever according to the present utility model;

FIG. 20 is a schematic view of the structure of the ear hanger of the present utility model;

FIG. 21 is a schematic view of another embodiment of the present utility model;

FIG. 22 is an exploded view I of another embodiment of the present utility model;

FIG. 23 is an exploded view II of another embodiment of the present utility model;

FIG. 24 is a schematic view of the construction of the front header mounting portion components of the present utility model;

FIG. 25 is an exploded view of FIG. 24 in accordance with the present utility model;

FIG. 26 is a schematic view of the front header of the present utility model;

FIG. 27 is a schematic view of the integrated design of the housing and mounting plate of the present utility model;

fig. 28 is a cross-sectional view of the connection of the slip ring and the limiting hole of the present utility model.

Reference numerals illustrate:

1000. proximal, 2000, distal, 1, housing, 101, upper housing, 102, lower housing, 103, front housing, 2, mounting plate, 201, limit notch, 202, rear mounting portion, 203, linkage portion, 204, front mounting portion, 205, clamping groove, 206, wire passing groove, 3, regulating mechanism, 301, regulating sleeve, 302, driven gear, 303, front gland, 304, middle moving block, 4, linkage mechanism, 401, blocking ring, 402, spring, 403, hanger coated tube holder, 40301, top pressing portion, 40302, limit portion, 40303, sliding portion, 40304, spring stabilizing portion, 404, shaft moving rod, 405, regulating tube holder gland, 45, regulating tube holder, 4501, guide groove, 5, regulating tube holder, 501, a bending adjusting sleeve, 502, a guide rod, 50201, a limiting plate, 50202, an avoidance groove, 503, a driving block, 504, a stay wire fixing seat, 505, a rear gland, 506, a manual rotating handle, 6, a travel switch, 7, a control panel, 8, a main switch, 9, a manual mechanism, 901, a worm, 902, a worm wheel, 903, a limiting hole, 90301, a slip ring, 10, an electric mechanism, 1001, a motor, 1002, a driving gear, 11, a guide pipe, 12, a buzzer, 13, a bearing, 1301, a bearing groove, 14, an inner pipe, 1401, a hanger, 140101, a groove, 140102, a convex column, 15, an adjusting pipe, 1501, a stay wire, 16, a hanging lug cladding pipe, 17, an outer pipe, 18, a clamping plate, 19 and a wire passing hole.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

It should be noted that, in this context, for example, a is fixedly connected to B, and a and B may be directly fixedly connected to each other or indirectly fixedly connected to each other through C.

It should be noted that, except as specifically described herein, the "proximal" refers to the side of the electrokinetic delivery system closer to the operator, as shown in fig. 1, the reference numeral proximal 1000, and the "distal" refers to the side of the electrokinetic delivery system further from the operator, as shown in fig. 1, the reference numeral distal 2000.

The utility model provides a technical scheme that: a bendable heart valve replacement delivery system, which comprises an assembly disc 2, a linkage mechanism 4 and a catheter 11;

the outer side of the assembly disc 2 may be provided with a housing 1, the housing 1 is used for forming the outer surface of an operation handle, the assembly disc 2 is mainly used for loading various components, the assembly disc 2 is fixedly installed inside the housing 1, the assembly disc 2 may be integrally formed with the housing 1, or the assembly disc 2 and the housing 1 may not be integrally formed, the assembly of the housing 1 and the assembly disc 2 is performed at a later stage, an embodiment is given here, the housing 1 includes an upper shell 101 and a lower shell 102, the assembly disc 2 may be integrally formed with the lower shell 102, the upper shell 101 and the lower shell 102 may form a complete outer surface of the handle, and an embodiment is given here, the housing 1 includes an upper shell 101 and a lower shell 102, the assembly disc 2 is installed on the lower shell 102, the upper shell 101 and the lower shell 102 may form a complete outer surface of the handle, and in some embodiments, the housing 1 may also be formed with an upper shell 101, a lower shell 102 and a front shell 103; the shell 1 can be in various shapes such as a cuboid, a cylinder, an ellipsoid and the like, and the shell 1 can be composed of a plurality of parts;

the catheter 11 includes:

hanger cladding tube 16: for fixing the artificial heart valve in cooperation with the inner tube 14, controlling the connection and disconnection of the valve and the catheter 11; the inner tube 14 is positioned inside the hanging ring cladding tube 16, the distal end of the inner tube 14 is matched with the hanging ring cladding tube 16 and used for fixing the connection between the artificial heart valve and the catheter 11, the distal end of the inner tube 14 can comprise an ear hanger 1401, the ear hanger 1401 is used for fixing the artificial heart valve, the inner tube 14 can penetrate through the linkage mechanism 4, and the proximal end of the inner tube 14 is fixedly connected with the assembly disc 2;

the linkage mechanism 4 comprises a hanging-ring cladding-pipe fixing seat 403 and a shaft-moving rod 404, the hanging-ring cladding-pipe fixing seat 403 is axially and slidably mounted on the mounting plate 2, for example, a corresponding linkage part 203 is arranged on the mounting plate 2, that is, a space for accommodating the sliding movement of the linkage mechanism 4, the linkage part 203 is used for slidably mounting the linkage mechanism 4, the linkage part 203 is arranged according to the mounting space requirement of the linkage mechanism 4, which is obtained by a person skilled in the art without creative labor, as shown in fig. 3 and 4, the linkage part 203 for mounting the linkage mechanism 4 is an embodiment, not limiting, the hanging-ring cladding-pipe fixing seat 403 is fixedly connected with the hanging-ring cladding pipe 16, the shaft-moving rod 404 is arranged outside the hanging-ring cladding-pipe 16, the proximal end of the shaft-moving rod 404 corresponds to the distal end side of the hanging-ring cladding-pipe fixing seat 403, whether the axial moving rod 404 and the hanging ring cladding tube fixing seat 403 are fixedly connected or not mainly depends on the axial moving distance between the outer tube 17 and the hanging ring cladding tube 16, the hanging ring cladding tube 16 is arranged inside the outer tube 17, for example, when the axial moving stroke of the outer tube 17 is larger than that of the hanging ring cladding tube 16, the axial moving rod 404 and the hanging ring cladding tube fixing seat 403 are not fixedly connected, that is, when the outer tube 17 moves backwards, when the axial moving rod 404 moves to a certain position, the proximal end of the axial moving rod 404 abuts against the distal end side of the hanging ring cladding tube fixing seat 403, and then the hanging ring cladding tube fixing seat 403 is pushed to move proximally, so that the hanging ring cladding tube 16 and the outer tube 17 are linked, for example, when the axial moving stroke of the outer tube 17 is the same as that of the hanging ring cladding tube 16, the axial moving rod 404 and the hanging ring cladding tube fixing seat 403 can be fixedly connected, the spring can be omitted, and preferably, the shaft moving rod 404 is not fixedly connected with the hanging ring cladding pipe fixing seat 403; the axial movement of the axial movement rod 404 may be provided by a regulating mechanism, examples of which include, but are not limited to:

an embodiment of a control mechanism 3 is provided, where the control mechanism 3 includes a control sleeve 301, the control sleeve 301 is rotatably mounted on a distal end portion of the mounting disc 2, for example, the mounting disc 2 is correspondingly provided with a front mounting portion 204 for rotatably mounting the control sleeve 301 as shown in fig. 3 and 4, the mounting space is set according to the control sleeve 301, which is available to a person skilled in the art without performing creative labor, the front mounting portion 204 for mounting the control sleeve 301 as shown in fig. 3 and 4 is an embodiment, and is not limited by this, the inner surface of the control sleeve 301 is provided with an internal thread, a middle moving block 304 is disposed in the control sleeve 301, an external thread is disposed outside the middle moving block 304 and is in threaded connection with the internal thread of the control sleeve 301, the middle moving block 304 is fixedly connected to the outer tube 17, and the middle moving block 304 is fixedly connected to a shaft moving rod 404 of the linkage mechanism 4 (for example: the distal end of the shaft moving rod 404 is fixedly connected with the middle moving block 304 after passing through the guide groove 4501 of the elbow adjusting fixing seat 45, the guide groove 4501 may be a concave guide rail on the surface of the elbow adjusting fixing seat 45, or may be a channel penetrating through the elbow adjusting fixing seat 45, which mainly aims to limit the axial rotation of the shaft moving rod 404 and further limit the axial rotation of the middle moving block 304, so as to realize that the middle moving block 304 can only move along the axial direction, the elbow adjusting fixing seat 45 is fixedly connected with the assembly disc 2, for example, a screw/bolt is fixed or the elbow adjusting fixing seat 45 is clamped with the assembly disc 2, i.e. one end of the elbow adjusting fixing seat 45 is provided with a clamping plate 18, and a clamping groove 205 is correspondingly provided on the assembly disc 2, the clamping plate 18 is placed into the clamping groove 205, so as to realize the fixed connection of the elbow adjusting fixing seat 45 and the assembly disc 2), the middle moving block 304 does not rotate along with the rotation of the control sleeve 301, but moves axially along with the rotation of the control sleeve 301 under the action of the threaded connection, so that the outer tube 17 is driven to move axially, and the shaft moving rod 404 is controlled to move; through the arrangement, the stability of the conveying system is effectively improved, misoperation can be avoided in the movement sequence between the outer tube 17 and the hanger cladding tube 16, the safety of the conveying system is improved, and linkage of the outer tube 17 and the hanger cladding tube 16 is realized.

In one embodiment, the control mechanism 3 is driven by an electric mechanism 10, and the electric mechanism 10 can output more stable motion.

An embodiment of an electric mechanism 10 is provided herein, the electric mechanism 10 includes a motor 1001, the motor 1001 is fixedly mounted on a mounting plate 2, an output shaft of the motor 1001 is fixedly connected with a driving gear 1002, the driving gear 1002 is meshed with a driven gear 302, the driven gear 302 is disposed on the outer side of the control sleeve 301, the driving gear 1002 drives the control sleeve 301 to rotate through the driven gear 302, and gear transmission has advantages of high transmission precision, high bearing capacity, high transmission efficiency, stable operation, good durability and the like.

In some embodiments, when the electric mechanism 10 controls the management and control mechanism 3, an operator cannot well sense the direct force feedback of the management and control mechanism 3, for example, when the management and control sleeve 301 rotates to enable the middle moving block 304 to move proximally, if the electric motor 1001 continues to be electrified and operated after the middle moving block 304 reaches a limit position, damage to a conveying system may be caused, a limit portion 40302 is provided on a side surface of the ear cladding tube fixing seat 403, a travel switch 6 is correspondingly provided on a proximal end side of the limit portion 40302, the travel switch 6 is fixedly mounted on the mounting disc 2, the travel switch 6 can control stopping of the electric motor 1001, after the ear cladding tube fixing seat 403 moves proximally to a certain position under the action of the shaft moving rod 404, the limit portion 40302 presses the travel switch 6, after the travel switch 6 is pressed down, the electric motor 1001 stops rotating, at this time, the outer tube 17 has moved to the limit position, and cannot continue to move proximally through the electric mechanism 10 and its ear cladding tube 16, and another embodiment is provided here, the travel switch 6 is located on a proximal end surface of the fixing seat, and the ear cladding tube 403 is covered by the same length as the ear cladding tube 403.

In some embodiments, the regulating mechanism 3 is also driven by a manual mechanism 9 in order to increase the reliability of the handle.

An embodiment of the manual mechanism 9 is further provided, the manual mechanism 9 includes a worm 901, the worm 901 is rotationally connected with the assembly disc 2, the worm 901 is meshed with a worm wheel 902, the worm wheel 902 is arranged on the outer side of the control sleeve 301, the worm 901 drives the control sleeve 301 to rotate through the worm wheel 902, the worm 901 and the worm wheel 902 are kept on the same plane, and the rotation direction of the worm 901 can be changed, for example, the central axis of the worm 901 is perpendicular to the central axis of the worm wheel 902 by 90 degrees, so that the rotation axis direction of the worm can be effectively adjusted, and the operation of the conveying system is facilitated.

In some embodiments, in order to enable the control mechanism 3 to be better rotationally connected with the assembly disc 2, two ends of the control sleeve 301 are rotationally connected with the assembly disc 2 through bearings 13, bearing grooves 1301 may be formed in corresponding positions of the assembly disc 2, bearings 13 at the distal end of the control sleeve 301 are connected to the assembly disc 2 through a front gland 303, bearings 13 at the proximal end of the control sleeve 301 are connected to the assembly disc 2 through a tuning tube fixing seat gland 405, and meanwhile, the tuning tube fixing seat gland 405 may also fixedly connect the tuning tube fixing seat 45 to the assembly disc 2.

In some embodiments, in order to increase the stability when the shaft moving rod 404 is in abutting connection with the hanging ring cladding tube fixing seat 403, the distal end of the hanging ring cladding tube fixing seat 403 is provided with a pressing portion 40301, the outer side of the pressing portion 40301 is provided with a protrusion, and the shaft moving rod 404 abuts against the inner side of the protrusion on the outer side of the pressing portion 40301, so that the proximal end of the shaft moving rod 404 cannot abut against the distal end of the hanging ring cladding tube fixing seat 403 due to deformation of the shaft moving rod 404 is prevented.

In some embodiments, in order to reduce the contact area between the hanger coating tube fixing base 403 and the mounting plate 2, and further reduce the friction force between the hanger coating tube fixing base 403 and the mounting plate 2 when sliding, a surface of the hanger coating tube fixing base 403 in contact with the mounting plate 2 is provided with a plurality of sliding parts 40303, for example, as shown in fig. 9 and 16, a surface of the hanger coating tube fixing base 403 in contact with the mounting plate 2 is provided with 4, 6 or 8 sliding parts 40303, and the hanger coating tube fixing base 403 is slidably connected with the mounting plate 2 through the sliding parts 40303, and the sliding parts 40303 are convex smooth cylinders or dots, or other convex smooth structures capable of reducing the friction force between the hanger coating tube fixing base 403 and the mounting plate 2.

In some embodiments, the proximal end of the ear hanging tube fixing seat 403 is provided with a spring 402, the other end of the spring 402 abuts against the assembly disc 2, the spring 402 can realize that after the ear hanging tube fixing seat 403 moves proximally, after the pushing force towards the proximal direction of the ear hanging tube fixing seat 403 is removed, the ear hanging tube fixing seat 403 can be pushed to the distal end by the spring 402 in a reset manner, and when the ear hanging tube fixing seat 403 has no reset requirement, the spring 402 can be omitted.

In some embodiments, although the spring 402 is sleeved outside the catheter 11, in order to further stabilize the connection between the spring 402 and the hanging ring cladding tube fixing seat 403, a spring stabilizing portion 40304 formed by a concave ring structure is disposed at the proximal end of the hanging ring cladding tube fixing seat 403, and a distal end of the spring 402 is mounted in the spring stabilizing portion 40304.

In some embodiments, in order to prevent the prosthetic heart valve at the distal end of the catheter 11 from being damaged due to the transitional forward movement of the suspension loop coating tube 16, a limit notch 201 is disposed on one side of the suspension loop coating tube fixing seat 403, the limit notch 201 is disposed on the assembly disc 2, the limit notch 201 corresponds to the limit portion 40302, and the limit notch 201 limits the axial movement distance of the limit portion 40302 to the distal end, so that the suspension loop coating tube fixing seat 403 cannot transition to move to the distal end under the action of the spring 402, and at this time, when the shaft moving rod 404 is fixedly connected with the suspension loop coating tube fixing seat 403, the axial movement stroke of the shaft moving rod 404 should not be greater than the axial movement stroke required by the limit notch 201.

In some embodiments, for convenience of operation, the bending adjustment function of the conveying system is integrated with the handle, so that the catheter 11 can be adjusted flexibly, the proximal end of the linkage mechanism 4 is provided with a bending adjustment mechanism 5, the bending adjustment mechanism 5 is mounted on the proximal end part of the assembly disc 2, and the bending adjustment mechanism 5 controls the bending of the catheter 11.

An embodiment of a bending mechanism 5 is presented herein, said bending mechanism 5 comprising a bending sleeve 501, said bending sleeve 501 being rotatably mounted to the proximal end of the mounting plate 2, for example the mounting plate 2 is correspondingly provided with a rear mounting portion 202 for rotatably mounting the bending sleeve 501 as shown in figures 3 and 4, the installation space here is provided according to the bending sleeve 501, which is available to the person skilled in the art without the need for inventive labour, the rear mounting portion 202 for mounting the buckle sleeve 501 as shown in figures 3 and 4 is one embodiment, and not by way of limitation, the inner surface of the buckle sleeve 501 is provided with internal threads, the buckle sleeve 501 is internally provided with a guide rod 502, one end of the guide rod 502 extends out of the bending sleeve 501 and is fixedly mounted on the mounting plate 2, a manner of fixedly mounting the guide rod 502 is given here, at the distal end of the guide rod 502, a clamping plate 18 is provided, the clamping plate 18 extends out of the bending sleeve 501, a corresponding clamping groove 205 is arranged on the assembly disc 2, the guide rod 502 is fixedly arranged on the assembly disc 2 by clamping the clamping plate 18 into the clamping groove 205, the guide rod 502 is axially slidably mounted with a wire driving member, such as a wire driving member provided with an axial groove or groove track, an axial convex rail or a concave rail is arranged at the outer side of the corresponding guide rod 502, an external thread is arranged at the outer side of the driving wire part and is in threaded connection with an internal thread of the bending adjustment sleeve 501, the wire driving member is connected with the pull wire 1501 of the adjusting bent pipe 15, the pull wire 1501 is pulled by the proximal movement of the wire driving member, and further adjusts the curvature of the adjusting and bending pipe 15, the adjusting and bending pipe 15 is positioned between the hanging ring cladding pipe 16 and the outer pipe 17, the proximal end of the bending tube 15 is fixedly arranged on the assembly disc 2, and the bending sleeve 501 rotates to drive the wire driving member to axially move along the guide rod 502.

In some embodiments, due to the addition of the bending mechanism 5, the distal end of the bending mechanism 5 is connected to the spring 402, the proximal end of the spring 402 is connected to the mounting plate 2 through the bending mechanism 5, the proximal end of the spring 402 is mounted on the distal end of the guide rod 502, the proximal end of the inner tube 14 is fixedly mounted on the mounting plate 2 through the bending mechanism 5, and the proximal end of the inner tube 14 is fixedly mounted on the proximal end of the guide rod 502.

In some embodiments, the spring 402 is connected with the bending mechanism 5 through a blocking ring 401, the proximal end of the spring 402 is connected with the distal end of the guide rod 502 through the blocking ring 401, the blocking ring 401 is mounted at the distal end of the guide rod 502, the blocking ring 401 is provided with a spring stabilizing portion 40304, the proximal end of the spring 402 is mounted in the spring stabilizing portion 40304, and the stability of the connection or propping of the spring 402 is effectively improved due to the arrangement of the spring stabilizing portion 40304.

In some embodiments, the bending adjustment mechanism 5 is driven by the electric mechanism 10, and specifically, the control mechanism 3 may be the same as the electric mechanism 10, which is not described herein.

In some embodiments, in order to increase the stability of the bending adjustment mechanism 5, the bending adjustment mechanism 5 is further driven by a manual mechanism 9, where the same mechanism of the control mechanism 3 as the manual mechanism 9 may be used, and no further description is given here.

In some embodiments, the transmission path of the power source to the actuating member (bending sleeve 501) is reduced due to the larger driving force required for bending, the proximal end of the bending sleeve 501 is extended out of the outer side of the mounting plate 2, and the rotation of the bending sleeve 501 is directly controlled by rotating the proximal end of the bending sleeve 501.

In some embodiments, to reduce the force required to operate the buckle sleeve 501, a manual knob 506 is mounted to the proximal end of the buckle sleeve 501, the manual knob 506 having a larger outer peripheral diameter than the buckle sleeve 501, and an increased manual knob 506 is utilized to reduce the force required to twist the buckle sleeve 501 when rotated.

In some embodiments, in order to enable the bending mechanism 5 to be better rotatably connected with the assembly disc 2, two ends of the bending adjustment sleeve 501 are rotatably connected with the assembly disc 2 through bearings 13, bearing grooves 1301 may be provided at corresponding positions of the assembly disc 2, and the bearings 13 at two ends of the bending adjustment sleeve 501 are connected with the assembly disc 2 through a rear gland 505.

In some embodiments, since the pull wire 1501 can bear a large pulling force, but cannot bear a large pushing force, the pull wire 1501 is bent due to the excessive pushing force, the catheter 11 and the bend adjusting tube 15 are elastic, and can be restored to an original state by virtue of elasticity, for example, straight after the pull wire 1501 loses the pulling force, so the wire driving member comprises a driving block 503 and a pull wire fixing seat 504, the driving block 503 is located at the distal end of the pull wire fixing seat 504, an external thread is arranged at the outer side of the driving block 503 and is matched with the internal thread of the bend adjusting sleeve 501, the driving block 503 is provided with a wire through hole 19, the wire through hole 19 penetrates the pull wire 1501 of the bend adjusting tube 15, the pull wire 1501 is fixedly connected with the pull wire fixing seat 504, and at this time, the driving block 503 can only push the pull wire fixing seat 504 to move proximally, but cannot drive the pull wire fixing seat 504 to move distally, and the pull wire 1501 can bear the pulling force only, but cannot bear the pushing force.

In some embodiments, the installation mode of the tuning bend 15 is given, because the tuning bend 15 is relatively static, the proximal end of the tuning bend 15 is fixedly installed on the assembly disc 2 through the tuning bend fixing seat 45, the stay wire 1501 between the tuning bend fixing seat 45 and the tuning bend mechanism 5 is formed by arranging the wire passing groove 206 on the assembly disc 2, the stay wire 1501 of the tuning bend 15 is connected with the tuning bend mechanism 5 through the wire passing groove 206, the setting of the wire passing groove 206 separates the tuning bend 15 from the tuning bend mechanism 5, the internal layout of the handle is optimized, the tuning bend mechanism 5 can be integrated in the handle, when the tuning bend fixing seat 45 is provided with the clamping plate 18, the corresponding wire passing hole 19 or the avoiding groove 50202 for the stay wire 1501 to pass through is formed on the clamping plate 18, and when the guide rod 502 is also provided with the clamping plate 18, the corresponding wire passing hole 19 or the avoiding groove 50202 for the stay wire 1501 to pass through is also formed on the clamping plate 18, the limiting plate 50201 for limiting the driving member is also arranged on some guide rods 502, and the limiting plate 01 is correspondingly provided with the wire passing hole 19 or the avoiding groove 50202 for the stay wire passing through the clamping plate 19.

In some embodiments, as shown in fig. 14 and 20, an ear hanger 1401 connected to a prosthetic heart valve is provided, where a corresponding ear is disposed on the prosthetic heart valve, the ear hanger is clamped into a groove 140101 of the ear hanger 1401 and is wrapped and limited in the groove 140101 by an ear hanger wrapping tube 16, when the ear hanger wrapping tube 16 moves proximally, the ear hanger of the valve is loose and ejected from the groove 140101, so as to separate the valve from the catheter 11, the distal end of the inner tube 14 is provided with the ear hanger 1401, the ear hanger 1401 is connected to the distal end of the inner tube 14, the outer surface of the ear hanger 1401 is provided with a groove 140101, in some examples, a boss 140102 is disposed on the outer surface of the ear hanger 1401, for example, a cylindrical boss, a square boss or the like, a corresponding round hole or square hole is disposed on the ear hanger 1401, a boss 140102 for being sleeved on the outer surface of the ear hanger 1401, in some embodiments, the outer surface of the ear hanger 1401 is provided with a groove 140101, and a corresponding boss or square hole is disposed on the corresponding boss 62 of the ear hanger 1401, and a corresponding boss is disposed on the corresponding boss or square hole of the heart valve.

In some embodiments, the present utility model is given an integrated design, the housing 1 is a cylinder-like structure, although the shape is changed, the principle is the same, where the integrated design refers to that a plurality of parts are integrally designed, so as to reduce the assembly difficulty of the conveying system, as shown in fig. 22-26, the elbow fixing seat 45, the elbow fixing seat gland 405 and the front gland 303 are integrally designed, where any two adjacent parts may be integrally designed, and the integrated structure formed by the elbow fixing seat 45, the elbow fixing seat gland 405 and the front gland 303 may be referred to as a front assembly.

In some embodiments, the front collector is provided with a limiting hole 903, the limiting hole 903 is used for penetrating through a shaft of the worm 901, the shaft of the worm 901 is provided with a sliding ring 90301, the sliding ring 90301 is of a stepped shaft structure, the upper portion of the sliding ring 90301 is rotationally connected with the limiting hole 903, the lower portion of the sliding ring 90301 is larger than the diameter of the limiting hole 903, and further through the design of the sliding ring 90301 and the limiting hole 903, the axial movement of the worm 901 is limited, and the stability of the worm 901 in the rotation process is improved.

In some embodiments, the bearing 13 is fixed directly by the housing 1.

In some embodiments, the electric mechanism 10 may also be controlled by the control board 7 and the main switch 8, or may be connected with the buzzer 12 to play a role of ringing, where the control board 7, the main switch 8, the buzzer 12, etc. are connected by wires, and the positions of the control board 7, the main switch 8, the buzzer 12, etc. may be adjusted without affecting the movement of the mechanism inside the handle, and further the installation positions of the control board may be changed, or the control board and the main switch may be designed integrally with other components, where the adjustment of the positions may be obtained by those skilled in the art without performing creative labor.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a heart valve replacement conveying system of adjustable bending, includes fitting disc, link gear and pipe, its characterized in that:

2. The flexible heart valve replacement delivery system of claim 1, wherein the distal end of the holder tube mount is provided with a top pressure portion, an outer side of the top pressure portion is provided with a protrusion, and the shaft lever abuts an inner side of the protrusion of the outer side of the top pressure portion.

3. The flexible heart valve replacement delivery system of claim 1, wherein the surface of the holder tube mount that contacts the mounting plate is provided with a plurality of sliding portions by which the holder tube mount is slidably coupled to the mounting plate.

4. The flexible heart valve replacement delivery system of claim 1, wherein the proximal end of the holder tube mount is provided with a spring, the other end of the spring bearing against the mounting plate.

5. The flexible heart valve replacement delivery system of claim 1, wherein the proximal end of the holder tube holder is provided with a spring-stabilizing portion within which a distal end of a spring is mounted.

6. The flexible heart valve replacement delivery system of claim 1, wherein a limit notch is provided on one side of the holder tube holder, the limit notch is provided on the assembly disc, a limit portion is provided on a side of the holder tube holder, and the limit notch corresponds to the limit portion.

7. The flexible heart valve replacement delivery system of any of claims 1-6, wherein the proximal end of the linkage is provided with a bending mechanism mounted to the proximal end portion of the mounting plate, the bending mechanism controlling bending of the catheter.

8. The adjustable bend heart valve replacement delivery system of claim 7, wherein the bend adjustment mechanism comprises a bend adjustment sleeve rotatably mounted at a proximal end of the assembly disc, an internal thread is disposed on an inner surface of the bend adjustment sleeve, a guide rod is disposed inside the bend adjustment sleeve, one end of the guide rod extends out of the bend adjustment sleeve and is fixedly mounted on the assembly disc, a wire driving member is axially slidably mounted on the guide rod, an external thread is disposed on an outer side of the wire driving member and is in threaded connection with the internal thread of the bend adjustment sleeve, the wire driving member is connected with a pull wire of the bend adjustment tube, the bend adjustment tube is located on an outer side of the hanger cladding tube, and a proximal end of the bend adjustment tube is fixedly mounted on the assembly disc, and the bend adjustment sleeve can drive the wire driving member to axially move along the guide rod.

9. The flexible heart valve replacement delivery system of claim 8, wherein the distal end of the flexible mechanism is coupled to a spring, the proximal end of the spring is coupled to the mounting plate via the flexible mechanism, and the proximal end of the spring is mounted to the distal end of the guide rod.

10. The flexible heart valve replacement delivery system of claim 9, wherein the proximal end of the spring is coupled to the distal end of the guide post via a stop ring, the stop ring being mounted to the distal end of the guide post, the stop ring being provided with a spring stabilizing portion in which the proximal end of the spring is mounted, the distal end of the spring being coupled to the hanger tube mount.

11. The flexible heart valve replacement delivery system of claim 8, wherein the proximal end of the flexible sleeve extends outside of the mounting plate, and wherein rotation of the flexible sleeve is directly controlled by rotating the proximal end of the flexible sleeve.

12. The adjustable bend heart valve replacement delivery system of claim 11, wherein the proximal end of the bending sleeve is fitted with a manual knob having a peripheral diameter that is greater than the peripheral diameter of the bending sleeve.

13. The flexible heart valve replacement delivery system of claim 8, wherein the wire driving member comprises a driving block and a wire fixing seat, the driving block is located at a distal end of the wire fixing seat, an external thread is arranged on the outer side of the driving block and is matched with an internal thread of the flexible sleeve, the driving block is provided with a wire passing hole, the wire passing hole penetrates through a wire of the flexible tube, and the wire is fixedly connected with the wire fixing seat.