CN216318222U

CN216318222U - Bending control assembly of conveying system and conveying system

Info

Publication number: CN216318222U
Application number: CN202123000872.2U
Authority: CN
Inventors: 王广卉
Original assignee: Shanghai Yiqiao Medical Instrument Co ltd
Current assignee: Shanghai Yiqiao Medical Instrument Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-04-19
Anticipated expiration: 2031-12-01

Abstract

The utility model discloses a bending control assembly of a conveying system and the conveying system, wherein the conveying system comprises: the conveying sheath and the guide sheath are respectively matched with one bending control assembly, and the bending control assembly comprises: a housing; the threaded pipe is arranged in the shell, and a first threaded part is arranged on the outer side of the threaded pipe; one end of the pull wire is fixedly connected with the threaded pipe, and the other end of the pull wire is connected with the conveying sheath or the guide sheath; the adjusting part, the adjusting part set up in just the cover is located in the casing the screwed pipe, the adjusting part with the spacing cooperation of casing axial, the inboard of adjusting part is provided with second screw thread portion, first screw thread portion with second screw thread portion screw-thread fit, in order to realize the axial displacement of screwed pipe. The stay wire pulls the delivery sheath or the guide sheath to bend by tensioning the stay wire.

Description

Bending control assembly of conveying system and conveying system

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a bending control assembly of a conveying system and the conveying system.

Background

Mitral Regurgitation (MR) is one of the most common diseases of the heart valves. In recent years, with the breakthrough development of valve interventional therapy technology, MR interventional devices have become one of the key directions for the development of cardiovascular devices at home and abroad.

In the related art, a valve forceps instrument developed according to the technical principle of surgical valve margin-to-margin suturing is high in safety, simple in technical principle and high in feasibility, but the instrument needs to finally reach the left ventricle through the inferior vena cava, the right atrium, the interatrial septum and the left atrium during surgery, the approach is long and is bent at multiple positions, so that the surgery operation is very complicated, doctors need to repeatedly and finely adjust the bending degree, the direction, the horizontal position and the vertical depth of a delivery system, and after the ideal position is reached, the opening degree or the clamping degree of a valve forceps device needs to be repeatedly adjusted to clamp the valve, so that the operation time is long. In order to reduce the operation time and improve the success rate of the operation, it is necessary to provide a bending adjusting assembly and a conveying system thereof, which can realize complex control through simple operation, and facilitate the control of a doctor at the proximal end, i.e. the fine movement of a distal instrument.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. To this end, the present invention provides a bending control assembly of a delivery system, which can pull a delivery sheath or a guide sheath to bend by tensioning a pull wire, thereby realizing the turning of an operation path and delivering an implantable medical device to a target position, for example, delivering a valve clamping device to the left atrium.

The utility model also provides a conveying system with the bending control assembly.

The bend-controlling assembly of a delivery system according to an embodiment of the first aspect of the present invention comprises a delivery sheath and an introducer sheath, the delivery sheath and the introducer sheath are respectively matched with one bend-controlling assembly, and the bend-controlling assembly comprises: a housing; the threaded pipe is arranged in the shell, and a first threaded part is arranged on the outer side of the threaded pipe; one end of the pull wire is fixedly connected with the threaded pipe, and the other end of the pull wire is connected with the conveying sheath or the guide sheath; the adjusting part, the adjusting part set up in just the cover is located in the casing the screwed pipe, the adjusting part with the spacing cooperation of casing axial, the inboard of adjusting part is provided with second screw thread portion, first screw thread portion with second screw thread portion screw-thread fit, in order to realize the axial displacement of screwed pipe.

According to the bending control assembly of the delivery system, the threaded pipe can drive the pull wire to move by controlling the axial movement of the threaded pipe, so that the delivery sheath or the guide sheath is bent, and the bending angle of the delivery sheath or the guide sheath can be repeatedly adjusted to realize the turning of an operation path, so that the implantable medical device can smoothly reach a target position, for example, the valve clamping device can smoothly reach the left atrium.

According to some embodiments of the utility model, the inner surface of the housing is provided with two opposite axial limiting parts along the axial direction of the housing, the two axial limiting parts are respectively arranged at two ends of the threaded pipe, and the distance between the two axial limiting parts is greater than the axial length of the threaded pipe.

According to some embodiments of the utility model, the bend-controlling assembly further comprises: stay wire locker, stay wire locker includes: the elastic part is sleeved on the main body, one end of the elastic part abuts against the pin shaft, the other end of the elastic part abuts against the step part, one end of the pull wire penetrates through the main body, and the pin shaft is locked to the pull wire when the pin shaft is abutted against the elastic part.

According to some embodiments of the utility model, the body is provided with a tapered hole through which the pin shaft passes, the tapered hole comprising: the pin shaft is abutted to the first end by the elastic piece and then locked with the pull wire.

According to some embodiments of the utility model, the threaded pipe is provided with a fitting hole, and one end of the main body facing away from the stepped part is provided with a fitting column, and the fitting column is fitted in the fitting hole.

According to some embodiments of the utility model, the bend-controlling assembly further comprises: the connecting piece and the indicator, the one end of connecting piece with screwed pipe connects and the other end with the indicator is connected, the indicator selectively in the axial direction of casing moves, the casing has seted up the window, so that the indicator exposes.

According to some embodiments of the utility model, the threaded pipe is provided with one of a clamping groove and a buckle, the connecting piece is provided with the other of the clamping groove and the buckle, and the buckle is in clamping fit with the clamping groove.

According to some embodiments of the utility model, the bend-controlling assembly further comprises: the guide tube, the guide tube set up in the screwed pipe, the outside of guide tube is provided with first sliding part, the screwed pipe inboard is provided with the second sliding part, first sliding part is one kind in spout and the slider, the second sliding part is another kind in spout and the slider, the spout with slider sliding connection.

According to some embodiments of the utility model, the bend-controlling assembly further comprises: a first end cap disposed at the proximal end of the housing, a second end cap disposed at the distal end of the housing, and a hemostasis valve disposed within the proximal end of the housing.

A conveying system according to an embodiment of the second aspect of the utility model, the conveying system comprising: carry the module, carry the module to include: the conveying sheath and the bending control assembly of the embodiment; and, a guidance module, the guidance module comprising: the bending control assembly comprises an introducer sheath, an expansion tube and the bending control assembly of the embodiment, wherein any one of the delivery sheath and the expansion tube passes through the introducer sheath.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a bend-controlling assembly according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a partial schematic view of a bend control assembly according to an embodiment of the present invention;

FIG. 4 is an angular configuration of the pull-wire retainer according to the present invention;

FIG. 5 is a schematic view of another angle configuration of a stay wire locker according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a threaded pipe according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of an introducer sheath according to an embodiment of the utility model;

FIG. 8 is a schematic structural view of a delivery sheath according to an embodiment of the present invention;

FIG. 9 is a schematic view of an introducer sheath, a delivery sheath, and a multi-lumen tube in accordance with an embodiment of the utility model;

FIG. 10 is a schematic view of the matched configuration of the introducer sheath and the dilation tube of the introducer module according to an embodiment of the utility model;

FIG. 11 is a schematic structural view of the guiding module with the guiding sheath and the dilating tube detached according to the embodiment of the utility model;

FIG. 12 is a schematic structural diagram of a delivery module and a control module according to an embodiment of the utility model;

FIG. 13 is a schematic structural diagram of a delivery system according to an embodiment of the present invention;

FIG. 14 is a schematic view of a first procedure for implanting a valve binder of the delivery system according to an embodiment of the present invention;

FIG. 15 is a schematic illustration of a second procedure for implanting a valve binder of the delivery system according to an embodiment of the present invention;

FIG. 16 is a schematic illustration of a third procedure for implanting a valve binder with the delivery system according to an embodiment of the present invention;

FIG. 17 is a schematic illustration of a fourth procedure for implanting a valve binder with the delivery system according to an embodiment of the present invention;

figure 18 is a schematic illustration of a fifth procedure for implanting a valve binder with a delivery system according to an embodiment of the present invention.

Reference numerals:

s1, a valve clamping device;

s2, a conveying system;

100. a conveying module;

110. a delivery sheath;

120. a bending control assembly;

130. a housing; 131. an axial limiting part; 132. a limiting groove;

140. a threaded pipe; 141. a first threaded portion; 142. a second sliding section; 143. a mating hole; 144. a card slot;

150. a pull wire;

160. an adjustment member; 161. a limiting bulge;

170. a stay wire locker; 171. a main body; 172. a pin shaft; 173. an elastic member; 174. a step portion; 175. a tapered hole; 176. a mating post;

180. a connecting member; 190. an indicator; 200. a guide tube; 210. a first end cap; 220. a second end cap;

230. a hemostatic valve;

300. a control module; 310. a multi-lumen tube;

400. a guiding module;

410. an introducer sheath; 420. an expansion tube; 430. a guide wire;

500. a connector is provided.

Detailed Description

The embodiments of the present invention will be described in detail below, and the embodiments described with reference to the drawings are exemplary and should not be construed as specifically limiting the present invention.

Turning now to the bend control assembly 120 of the delivery system S2 with reference to fig. 1-18, and in accordance with the present invention, there is also provided a delivery system S2 having the bend control assembly 120 described above, the delivery system S2 further including a delivery sheath 110 and an introducer sheath 410, the delivery sheath 110 and the introducer sheath 410 each cooperating with one of the bend control assemblies 120 such that the delivery sheath 110 and the introducer sheath 410 can be moved through a tortuous delivery path to deliver an implantable medical device under the control of the corresponding bend control assembly 120. In the present embodiment, the implantable medical device is exemplified by a valve clamp S1, and it is to be understood that the bending control assembly 120 and its delivery system S1 of the present invention can also be applied to other types of implantable medical devices, such as valve prostheses. The proximal end is the end of the operator that is closer to the operator, and the distal end is the end of the operator that is farther from the operator.

As shown in fig. 1 to 3, the bend control assembly 120 of the conveying system S2 includes: housing 130, threaded tube 140, pull wire 150, and adjustment member 160.

The housing 130 has a substantially cylindrical hollow structure, and two opposite axial direction restricting portions 131 are provided on an inner surface of the housing 130 in an axial direction of the housing 130.

The threaded pipe 140 is disposed in the housing 130, the first threaded portion 141 is disposed outside the threaded pipe 140, the two axial direction-limiting portions 131 are respectively disposed at two ends of the threaded pipe 140, a distance between the two axial direction-limiting portions 131 is greater than an axial direction length of the threaded pipe 140, one end of the pulling wire 150 is fixedly connected to the threaded pipe 140, and the other end of the pulling wire 150 is connected to the delivery sheath 110 or the guide sheath 410. With this arrangement, when the threaded tube 140 moves along the axial direction of the housing 130, the threaded tube 140 tightens the pull wire 150, so that the pull wire 150 pulls the introducer sheath 410 or the delivery sheath 110 to bend, and the bending degree of the introducer sheath 410 or the delivery sheath 110 is adjusted accordingly according to the change of the moving position, thereby realizing the turning of the operation path and smoothly delivering the valve clamp S1 to the left atrium position. The two axial limiting portions 131 are used for limiting the axial moving stroke of the threaded tube 140, so as to ensure that the bending angle of the introducer sheath 410 or the delivery sheath 110 is controlled within a certain range. It will be appreciated that the pulling wire 150 is tightened when the threaded tube 140 is moved proximally in the axial direction of the housing 130, while the pulling wire 150 is loosened when the threaded tube 140 is moved distally in the axial direction of the housing 130.

As shown in fig. 1 to 3, the adjusting member 160 is disposed in the housing 130, the adjusting member 160 is in axial limit fit with the housing 130, the adjusting member 160 is sleeved on the threaded pipe 140, a second threaded portion is disposed on the inner side of the adjusting member 160, and the first threaded portion 141 and the second threaded portion are in threaded fit to realize axial movement of the threaded pipe 140. So set up, through the screw-thread fit of regulating part 160 and screwed pipe 140, can make the circumferential direction of regulating part 160 become the axial displacement of screwed pipe 140 for screwed pipe 140 takes up and acts as go-between 150, thereby make act as go-between 150 control guide sheath 410 or carry sheath 110 to transfer and bend, direct rotatory regulating part 160 can realize like this and transfer and bend the purpose, easy operation and convenience can improve operative employee's work efficiency. Wherein at least a portion of the adjusting member 160 is exposed relative to the housing 130, thereby facilitating the rotational operation of the operator.

In addition, the adjusting member 160 is provided with a limiting protrusion 161, the housing 130 is provided with a limiting groove 132, and the limiting protrusion 161 and the limiting groove 132 are matched with each other. So configured, the adjustment member 160 and the housing 130 are in axial limit fit to prevent axial movement of the adjustment member 160 along the housing 130, such that the threaded tube 140 moves axially while the adjustment member 160 rotates.

Therefore, by arranging the pull wire 150 and fixing the pull wire 150 on the threaded pipe 140, an operator can directly rotate the adjusting piece 160, so that the threaded pipe 140 axially moves and tensions the pull wire 150, the guide sheath 410 or the conveying sheath 110 is bent to different degrees, accurate turning of an operation passage is realized, and finally the valve clamp S1 is smoothly sent into the left atrium position.

As shown in fig. 2 and 3, the bending control assembly 120 further includes: the pull wire locking device 170, the pull wire locking device 170 is fixed on the threaded pipe 140, and the pull wire 150 penetrates through the pull wire locking device 170. The arrangement is that the pull-wire locker 170 tightens the pull wire 150, that is, the pull wire 150 is fixedly connected to the threaded tube 140 through the pull-wire locker 170, so that the threaded tube 140 can drive the pull wire 150 when moving axially along the housing 130, and the introducer sheath 410 or the delivery sheath 110 can be bent. Specifically, the wire locker 170 locks the wire 150 when the threaded pipe 140 is axially moved.

As shown in fig. 4 and 5, the wire locker 170 includes: the pull wire comprises a main body 171, a pin shaft 172 and an elastic member 173, wherein one end of the main body 171 is fixed on the threaded pipe 140, the other end of the main body is provided with a step portion 174, the pin shaft 172 penetrates through two opposite sides of the main body 171 and selectively moves between two opposite ends of the main body 171, the elastic member 173 is sleeved on the main body 171, one end of the elastic member 173 is abutted against the pin shaft 172, the other end of the elastic member 173 is abutted against the step portion 174, one end of the pull wire 150 penetrates through the main body 171, and when the pin shaft 172 is abutted against by the elastic member 173, the pin shaft 172 locks the pull wire 150. That is, the pin 172 penetrates the main body 171, and the pin 172 is elastically supported by the elastic member 173 between the two opposite ends of the main body 171, so that the pin 172 selectively moves between the two opposite ends of the main body 171, the pin 172 can be moved under the action of an external force, so that the pull wire 150 can penetrate the main body 171, and after the external force is removed, the pin 172 can lock the pull wire 150 under the action of the elastic force of the elastic member 173.

Further, the main body 171 is provided with a tapered hole 175, the pin shaft 172 penetrates through the tapered hole 175, and the tapered hole 175 includes: the first end and the second end are oppositely arranged, the second end is arranged between the first end and the step part 174, the aperture of the first end is smaller than that of the second end, and the pull wire 150 is locked when the pin shaft 172 is abutted to the first end by the elastic part 173. That is, the body 171 is opened with a tapered hole 175, and a second end of the tapered hole 175 is adjacent to the step portion 174, and the pin 172 is inserted through the tapered hole 175 of the body 171 and selectively moves in the tapered hole 175. So set up, act as go-between 150 wears to establish main part 171 to round pin axle 172 moves the first end of bell mouth 175 under the spring action of elastic component 173, thereby compress tightly act as go-between 150, when screwed pipe 140 along casing 130 axial displacement, through mutually supporting of round pin axle 172 and elastic component 173, can compress tightly act as go-between 150 all the time in the direction of motion of acting as go-between 150, effectively prevent to act as go-between 150 slippage, and it is convenient, adjustable to fix act as go-between 150 through act as go-between locker 170, be favorable to the installation operation.

In addition, the threaded pipe 140 is provided with a matching hole 143, one end of the main body 171, which is away from the step portion 174, is provided with a matching column 176, and the matching column 176 is matched in the matching hole 143, so that the circumferential rotation of the stay wire locker 170 can be limited through the matching of the matching column 176 and the matching hole 143, and the bending adjusting effect of the stay wire 150 is ensured. Specifically, as shown in fig. 5 and 6, the lower end of the main body 171 of the stay wire locker 170 is designed to be square, and is fitted into the square recess of the threaded pipe 140, so that when the threaded pipe 140 drives the stay wire locker 170 to move, the stay wire locker 170 is prevented from rotating and interfering with other parts. It is understood that the lower end of the main body 171 may be designed to have other non-cylindrical shapes, and the recess hole may be correspondingly designed to have other non-circular recess holes, as long as the rotation of the wire locker 170 is prevented.

In addition, the bending control assembly 120 further includes: a connection member 180 and an indicator 190, one end of the connection member 180 being connected with the threaded pipe 140 and the other end being connected with the indicator 190, the indicator 190 being selectively movable in the axial direction of the housing 130. With such an arrangement, when the threaded tube 140 moves axially along the housing 130, the indicating member 190 and the connecting member 180 are driven to move axially together, wherein the housing 130 is provided with a window for exposing the indicating member 190, the indicating member 190 is provided with an indicating line, and the window is provided with scales for displaying the moving distance of the pull wire 150, so as to indicate the bending angle of the guiding sheath 410 or the conveying sheath 110. Alternatively, the movement distance may be converted into a bend adjustment angle, and the scale directly displays the angle value. Due to the structural design, the bending control condition of the distal end of the introducer sheath 410 or the delivery sheath 110 can be judged directly by an operator from the indication of the indicating piece 190 during the operation process.

Further, one of the engaging groove 144 and the snap is provided on the threaded pipe 140, the other of the engaging groove 144 and the snap is provided on the connecting member 180, and the snap is engaged with the engaging groove 144. Referring to fig. 6, the end of the threaded pipe 140 is provided with a locking groove 144, which is in locking engagement with the fastening member 180, so as to achieve a stable connection between the threaded pipe 140 and the fastening member 180, thereby ensuring that the indication line of the indicator 190 can accurately display the moving distance of the pull wire 150.

As shown in fig. 2 and 3, the bending control assembly 120 further includes: the guide pipe 200, the guide pipe 200 is arranged in the threaded pipe 140, the outer side of the guide pipe 200 is provided with a first sliding part, the inner side of the threaded pipe 140 is provided with a second sliding part 142, the first sliding part and the second sliding part 142 are in sliding fit, the first sliding part is one of a sliding chute and a sliding block, the second sliding part 142 is the other of the sliding chute and the sliding block, and the sliding chute and the sliding block are in sliding connection. That is, the threaded pipe 140 can be relatively slid along the guide pipe 200 by the cooperation of the first and second sliding portions 142, so that the running friction can be reduced and the sliding efficiency can be improved. And, it can also guide the movement of the threaded pipe 140. Of course, the ball and the sliding groove can be matched, and the structure is not limited. And, the guiding tube 200 is a hollow structure with two ends penetrating, so that the delivery sheath 110 or the guiding sheath 410 can penetrate through the guiding tube.

In addition, the bending control assembly 120 further includes: a first end cap 210 disposed at the proximal end of the housing 130, a second end cap 220 disposed at the distal end of the housing 130, and a hemostasis valve 230 disposed within the proximal end of the housing 130. So set up, can play effectual guard action to the both ends of accuse curved component 120. The guiding sheath 410 or the delivery sheath 110 is inserted into the second end cap 220 and connected to the other end of the pull wire 150, the hemostatic valve 230 is disposed in the first end cap 210, and the hemostatic valve 230 provides a passage for the guiding sheath 410 or the delivery sheath 110 to be inserted into, an opening of the passage is flared, a large opening end facilitates the insertion of the guiding sheath 410 or the delivery sheath 110, and a small opening end covers the guiding sheath 410 or the delivery sheath 110, thereby achieving a hemostatic effect.

As shown in fig. 7 and 8, for the bending control purpose of the bending control assembly 120, the bending control angle of the guiding sheath 410 may be 0-120 °, and a bending control composite sheath may be selected. Among them, the inner layer of the composite sheath is a polymer layer, which has good lubricity and allows smooth passage of sheath such as the delivery sheath 110, and Polytetrafluoroethylene (PTFE) is preferably used; the middle layer is a metal layer, can be a braided metal wire or a cut metal tube, enhances the strength of the sheath tube and has certain flexibility; the outer layer is the polymer layer, and this polymer layer adopts the design of sectional type hardness, and wherein the C section is first main part section, selects the material that hardness is high, and the B section is first accuse curved section, selects soft material, and the A section is first end section, selects the material that hardness is high. That is, the stiffness of the first bend-controlling section is less than the stiffness of the first end section, and the stiffness of the first bend-controlling section is less than the stiffness of the first body section. The stay wire 150 is positioned between the middle layer and the outer layer, a stay wire ring is arranged between the section A and the section B, the stay wire ring is positioned between the middle layer and the outer layer, and the stay wire 150 is connected with the stay wire ring. When the pull wire 150 is pulled at the proximal end of the guide sheath 410, the pull wire 150 drives the guide sheath 410 to bend towards one side of the pull wire 150, and only the section B bends due to the sectional hardness design, so that the design purpose is achieved.

The delivery sheath 110 is similar in structural design to the introducer sheath 410, i.e., the delivery sheath 110 is also a composite sheath comprising: inlayer, intermediate level and skin, the inlayer is the macromolecule layer, and the intermediate level is the metal level, for weaving the wire or cutting tubular metal resonator, the skin is the macromolecule layer. The difference is the segmented design of the outer layer of the delivery sheath 110. According to the use requirement, the section A of the delivery sheath 110 is the second end section, the material with high hardness is selected, the section B is the second bending control section extending out of the guide sheath 410, the bending control angle is 0-120 degrees, the section B is made of soft material, the section C is designed to be a compliant section, in the final state, the section C is located in the first bending control section of the guide sheath 410, the hardness of the material selected in the section C is smaller than or equal to the hardness of the second bending control section of the delivery sheath 110, and the length of the section C is larger than that of the first bending control section of the guide sheath 410. The section D is the second main body section of the delivery sheath 110, and is made of a material having high hardness. Namely, the hardness of the compliant section is less than or equal to the hardness of the second bending control section and less than the hardness of the second end section, the hardness of the second bending control section is less than the hardness of the second main body section, and the length of the compliant section is greater than the length of the first bending control section, so that the delivery sheath 110 extends out of the guide sheath 410, and after the distal bending control, the delivery sheath can be pushed forwards and backwards to adjust the position of the distal valve clamp S1 without affecting the distal bending shape of the guide sheath 410, thereby improving the stability of the guide sheath 410.

Therefore, the operator can control the bending of the delivery sheath 110 and the guide sheath 410, rotate and move the guide sheath 410 and the delivery sheath 110 only by rotating the adjusting piece 160, and can realize the integral rotation or movement of the valve clamp S1, namely, the valve clamp S1 can reach the position of the mitral valve through the inferior vena cava, the right atrium, the interatrial septum and the left atrium, thereby effectively simplifying the operation and shortening the learning curve of the operator.

As shown in fig. 9 to 13, the conveying system S2 includes: a control module 300, a delivery module 100, and a guide module 400, a delivery system S2 for delivering and implanting a valve binder S1. Where the control module 300 is used to control implantation of the valve clip S1, it will be appreciated that the control module 300 may be omitted, or adjusted accordingly, when other types of implantable medical devices are delivered.

The control module 300 includes: a control handle and multi-lumen tube 310, and a valve clip S1 are disposed at the distal end of the multi-lumen tube 310.

Carry module 100 and control module 300 to be connected, carry module 100 to include: the delivery sheath 110 and the bend-controlling assembly 120 of the previous embodiment, the multi-lumen tube 310 is passed through the delivery sheath 110, and the other end of the pull wire 150 is connected to the distal end of the delivery sheath 110. That is, the multi-lumen tubing 310 is used to pass through the delivery sheath 110 to effect connection of the delivery module 100 and the control module 300, and the pull wire 150 is fixedly attached at one end to the threaded tube 140 and at the other end to the distal end of the delivery sheath 110 to effect bending control of the delivery sheath 110.

In addition, the guide module 400 is connected to one side of the conveying module 100 departing from the control module 300, and the guide module 400 includes: any one of the introducer sheath 410, the dilation tube 420 and the steering assembly 120, the delivery sheath 110 and the dilation tube 420 of the previous embodiments is passed through the introducer sheath 410, and the other end of the pull wire 150 is connected to the distal end of the introducer sheath 410. That is, the dilation tube 420 or the delivery sheath 110 can be selectively passed through the guiding sheath 410 according to different requirements, and the delivery module 100 and the guiding module 400 are connected by the connector 500, when the multi-lumen tube 310 with the valve clamp S1 is passed through the delivery sheath 110 and the delivery sheath 110 is passed through the guiding sheath 410, the control module 300, the delivery module 100 and the guiding module 400 constitute a delivery system S2, so that the valve clamp S1 can be smoothly and accurately delivered to the mitral valve position for clamping.

The process of delivering and implanting the valve clip device S1 by the delivery system S2 in the embodiment of the present invention is described below with reference to fig. 14-18:

the first implantation process: as shown in fig. 14, the operator carries the guide wire 430 into the heart through seldinger puncture to perform atrial septal puncture, the dilating tube 420 passes through the guiding sheath 410, and the dilating tube 420 is sleeved on the guide wire 430, so that the guiding sheath 410 and the dilating tube 420 enter the human body along the guide wire 430, by operating the adjusting member 160 of the guiding module 400, the pull wire 150 controls the first bending controlling section at the distal end of the guiding sheath 410 to bend and deflect, so that the guiding sheath 410 enters the right atrium and passes through the atrial septal space along the guide wire 430 to enter the left atrium, and then the dilating tube 420 and the guide wire 430 are withdrawn, and the guiding sheath 410 is kept in the human body.

And (2) implantation process II: as shown in fig. 15 and 16, the connector 500 connects the control module 300 with the valve clip S1 and the delivery module 100 with the introducer sheath 410, wherein the delivery sheath 110 is advanced along the introducer sheath 410 into the left atrium, the multi-lumen tube 310 with the valve clip S1 is advanced with the delivery sheath 110 into the left atrium, and after the valve clip S1 is exposed a distance beyond the distal end of the introducer sheath 410, the pull wire 150 is bent over the second bend-controlling segment at the distal end of the delivery sheath 110 to direct the valve clip S1 to the mitral valve annulus.

And (3) a third implantation process: as shown in fig. 16, the bending control assembly 120 of the delivery module 100 is rotated and moved to rotate and move the bending-controlled delivery sheath 110 to adjust the position of the valve clamp S1 to be perpendicular to the mitral annulus and aligned with the lesion.

And (4) implantation process four: as shown in fig. 17, the control handle of the control module 300 is operated so that the position of the valve clamp S1 and the opening degree of the clamp arms satisfy the clamping requirement.

The implantation process is five: as shown in fig. 18, the control handle of the control module 300 is operated to move the valve binder S1 up perpendicular to the mitral annulus and capture the leaflets, and after the valve binder S1 is put in place, the valve binder S1 is released and finally the delivery system S2 is withdrawn from the body and the use is finished.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

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

Claims

1. A curve control assembly for a delivery system, the delivery system including a delivery sheath and an introducer sheath, the delivery sheath and the introducer sheath each cooperating with one of the curve control assemblies, the curve control assembly comprising:

a housing;

the threaded pipe is arranged in the shell, and a first threaded part is arranged on the outer side of the threaded pipe;

one end of the pull wire is fixedly connected with the threaded pipe, and the other end of the pull wire is connected with the conveying sheath or the guide sheath;

the adjusting part, the adjusting part set up in just the cover is located in the casing the screwed pipe, the adjusting part with the spacing cooperation of casing axial, the inboard of adjusting part is provided with second screw thread portion, first screw thread portion with second screw thread portion screw-thread fit, in order to realize the axial displacement of screwed pipe.

2. The bend-controlling assembly of a conveying system according to claim 1, wherein two opposite axial limiting portions are disposed on the inner surface of the housing along the axial direction of the housing, the two axial limiting portions are disposed at two ends of the threaded pipe, respectively, and the distance between the two axial limiting portions is greater than the axial length of the threaded pipe.

3. The bend-controlling assembly of a conveying system of claim 1, further comprising: stay wire locker, stay wire locker includes: the elastic part is sleeved on the main body, one end of the elastic part abuts against the pin shaft, the other end of the elastic part abuts against the step part, one end of the pull wire penetrates through the main body, and the pin shaft is locked to the pull wire when the pin shaft is abutted against the elastic part.

4. The bend-controlling assembly of a conveying system according to claim 3, wherein the main body is provided with a tapered hole, the pin shaft penetrates through the tapered hole, and the tapered hole comprises: the pin shaft is abutted to the first end by the elastic piece and then locked with the pull wire.

5. The bend-controlling assembly of a conveying system according to claim 3 or 4, wherein the threaded pipe is provided with a fitting hole, and one end of the main body facing away from the stepped portion is provided with a fitting column, and the fitting column is fitted in the fitting hole.

6. The bend-controlling assembly of a conveying system of claim 1, further comprising: the connecting piece and the indicator, the one end of connecting piece with screwed pipe connects and the other end with the indicator is connected, the indicator selectively in the axial direction of casing moves, the casing has seted up the window, so that the indicator exposes.

7. The bend-controlling assembly of a conveying system according to claim 6, wherein the threaded pipe is provided with one of a clamping groove and a buckle, the connecting piece is provided with the other of the clamping groove and the buckle, and the buckle is in clamping fit with the clamping groove.

8. The bend-controlling assembly of a conveying system of claim 1, further comprising: the guide tube, the guide tube set up in the screwed pipe, the outside of guide tube is provided with first sliding part, the screwed pipe inboard is provided with the second sliding part, first sliding part is one kind in spout and the slider, the second sliding part is another kind in spout and the slider, the spout with slider sliding connection.

9. The bend-controlling assembly of a conveyor system of claim 1, further comprising: a first end cap disposed at the proximal end of the housing, a second end cap disposed at the distal end of the housing, and a hemostasis valve disposed within the proximal end of the housing.

10. A conveyor system, comprising:

carry the module, carry the module to include: a delivery sheath and the bend-controlling assembly of any one of claims 1-9; and the number of the first and second groups,

the guide module, the guide module includes: an introducer sheath, an expansion tube, and the bend-controlling assembly of any of claims 1-9, any of the delivery sheath and the expansion tube passing through the introducer sheath.