CN116077110A

CN116077110A - Meniscus suture instrument

Info

Publication number: CN116077110A
Application number: CN202211548826.2A
Authority: CN
Inventors: 朱志亮; 李斌; 胡建成; 文欢; 徐胜军
Original assignee: Hangzhou Rejoin Mastin Medical Device Co ltd
Current assignee: Hangzhou Rejoin Mastin Medical Device Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-05-09
Also published as: CN116687480B; CN116687480A

Abstract

The invention provides a meniscus suture instrument, and relates to the field of medical instruments. The meniscus suture instrument comprises a meniscus suture instrument push needle, a pushing component and a limiting component, wherein the push needle comprises an axis which extends along the extending direction and defines the two opposite ends of the meniscus suture instrument in the extending direction as a proximal end and a distal end; the pushing component comprises a pushing piece, the pushing piece is connected with the push pin so as to push the push pin to move along the extending direction, and the pushing piece can elastically deform along the radial direction of the push pin; the spacing subassembly includes first spacing portion and second spacing portion, and first spacing portion sets up in the one side that is close to the distal end of second spacing portion, and in radial direction, distance between first spacing portion and the push pin is greater than distance between second spacing portion and the push pin, and the impeller can be followed first spacing portion and second spacing portion and removed, when the impeller takes place elastic deformation, the impeller can be along first spacing portion removal and along second spacing portion removal two kinds of states between switch. The meniscus suture instrument can not be excited by mistake, and the safety of the operation is ensured.

Description

Meniscus suture instrument

Technical Field

The present application relates to the field of medical devices, and in particular, to a meniscus suture instrument.

Background

Along with the increasing awareness of the public on the concept of sports health, the amount of exercise of people is gradually increased, and a plurality of sports injuries are generated, so that in running, riding, skiing and other sports with legs as main exertion forces, meniscus tearing injuries in knee joints are generated. In the present day meniscal tear repair procedure, arthroscopic surgery has been employed to reduce the surgical incision in the patient. The tearing part of the meniscus can be divided into the damage of the body, the rear corner, the anterior corner, the root and the like, and the tearing of the body and the rear corner is mostly performed by adopting a total internal meniscus stitching instrument under a knee arthroscope.

During the use of the total internal meniscus suture instrument, the meniscus needs to be punctured, because the meniscus tissue is tough, and a large force is required when the meniscus is punctured, in the actual operation process, in order to puncture the meniscus smoothly, the total internal meniscus suture instrument is generally rotated by the hand to puncture the meniscus, and at this time, the hand rotates around the axis of the meniscus suture instrument. However, in the conventional total internal meniscus suture device, during the activation (pushing the implant out of the puncture needle by using the push needle), the button needs to be slid to one side to realize the activation, and during the rotation of the hand around the axis of the meniscus suture device, the button may be shifted, which may cause a problem of false activation.

Disclosure of Invention

In view of this, the present application provides a meniscus suture apparatus, when the meniscus suture apparatus is used to puncture the meniscus, the pushing element is located on the end of the second limiting portion of the limiting component, which is close to the first limiting portion, and since the distance between the first limiting portion and the push needle is greater than the distance between the second limiting portion and the push needle, there is a height difference between the first limiting portion and the second limiting portion, at this time, even if the operator hand drives the pushing element to rotate, the pushing element cannot move from the first limiting portion to the second limiting portion, the push needle cannot move distally, and thus the implant cannot be excited; when needs are stimulated, because the pushing piece can be elastically deformed along the radial direction, an operator can move the pushing piece to the second limiting part, the pushing piece moves along the second limiting part, the push needle can be driven to move towards the far end, further the stimulation of the implant is realized, the phenomenon of false stimulation can not occur in the meniscus suture device, and the safety of the operation is ensured.

There is provided in accordance with the present application a meniscus suture instrument comprising:

a push pin comprising an axis extending along an extension direction defining proximal and distal ends of the meniscal stapler at opposite ends in the extension direction;

The pushing assembly comprises a pushing piece, the pushing piece is connected with the push pin to push the push pin to move along the extending direction, and the pushing piece can elastically deform along the radial direction of the push pin;

the limiting assembly comprises a first limiting part and a second limiting part, the first limiting part is arranged on one side, close to the distal end, of the second limiting part, in the radial direction, the distance between the first limiting part and the push pin is larger than the distance between the second limiting part and the push pin, the pushing piece can move along the first limiting part and the second limiting part, and when the pushing piece is elastically deformed, the pushing piece can switch between two states, namely, moving along the first limiting part and moving along the second limiting part.

Preferably, the pushing assembly further comprises a main body part, the main body part is connected with the push pin, and the pushing piece comprises:

a push button movable along both the first limit portion and the second limit portion;

the first end of the elastic part is connected with the main body part, the second end of the elastic part is connected with the push button, and the elastic part can elastically deform along the radial direction.

According to the technical characteristics, the push button and the elastic part are arranged, so that the push needle can be driven to move, and the push needle is excited.

Preferably, the pushing member further includes a neck portion connecting both the elastic portion and the push button, the limit assembly includes a housing, both the first limit portion and the second limit portion are connected with the housing, the first limit portion includes a first limit groove, the second limit portion includes a second limit groove, both the first limit groove and the second limit groove extend along the extending direction;

the main body part and the elastic part are both arranged inside the shell, the push button is arranged outside the shell, and the neck part can slide in the first limit groove and the second limit groove.

According to the technical characteristics, the neck can slide in the first limit groove or the second limit groove, so that the neck can be ensured to move only along the extending direction, and the occurrence of the false excitation phenomenon is further avoided.

Preferably, the pushing assembly includes a mating portion extending from the main body portion toward the housing, the mating portion being in engagement with the main body portion;

The number of the matching parts is two, and the two matching parts are arranged on the main body part at intervals along the extending direction.

According to the technical characteristics, the contact area between the pushing component and the shell is reduced, and then the phenomenon that the pushing component is blocked in the sliding process is avoided.

Preferably, a limiting hole is formed in the side part, close to the distal end, of the shell, and a protruding part extending from the inner side wall to the inside of the limiting hole is arranged on the inner side wall of the limiting hole;

the meniscus suture instrument further comprises a puncture needle, the push needle is arranged in the puncture needle, a notch which is concave towards the inside of the puncture needle is arranged on the outer side wall of the puncture needle, and the protruding portion is arranged in the notch.

According to the technical characteristics, the puncture needle can be prevented from rotating in the circumferential direction and moving in the axial direction relative to the shell, and the relative position of the shell and the puncture needle is ensured not to change.

Preferably, the meniscus suture instrument is capable of activating a first implant and a second implant, the first implant being disposed within the puncture needle, the first limiting slot having a length in the extension direction that is greater than a length of the first implant in the extension direction;

The second implants are both arranged in the puncture needle, and the length of the second limiting groove in the extending direction is larger than that of the second implants in the extending direction.

According to the technical features described above, it can be ensured that the first implant and the second implant can be excited.

Preferably, the limiting assembly further comprises a prompt tone part, the prompt tone part is connected with the main body part, and a part of the prompt tone part protrudes towards the far end relative to the main body part;

the projection area of the cue sound part on the shell along the extending direction is smaller than the projection area of the main body part on the shell along the extending direction.

According to the technical characteristics, the volume of the pushing assembly when the pushing assembly collides with the shell can be reduced, and noise during collision can be reduced.

Preferably, the pushing assembly further includes an elastic driving part capable of being elongated or compressed along the extending direction, the elastic driving part is disposed at a side of the main body part facing the proximal end, the elastic driving part connects both the housing and the main body part, and the elastic driving part is compressed when the push button is located on the second limiting part.

According to the technical characteristics, the shell can move towards the distal end under the drive of the elastic driving part, and then the push needle is driven to move towards the distal end, so that the excitation of the implant is realized.

Preferably, the pushing assembly further includes a damping portion, one end of the damping portion is connected with the housing, the other end of the damping portion protrudes toward the housing, and the housing applies a force to the damping portion toward the push pin in the radial direction.

According to the technical characteristics, the push button can be attached to the first limiting part or the second limiting part in the process of moving along the extending direction, and the moving stability of the push button is further guaranteed.

Preferably, the meniscus suture device further comprises a depth limiting sleeve fixed at a side of the housing facing the distal end;

the puncture needle penetrates through the depth limiting sleeve, and a part of the puncture needle protrudes towards the distal end relative to the depth limiting sleeve.

According to the technical characteristics, the depth limiting sleeve can be attached to the surface of the meniscus so as to limit the penetration depth of the puncture needle.

Preferably, the limit assembly further comprises a stabilizing portion and a depth-limiting knob, the stabilizing portion being connected with a side portion of the housing facing the distal end, the stabilizing portion extending in the extending direction;

The depth limiting knob is connected with the depth limiting sleeve, and the depth limiting knob can move along the extending direction.

According to the technical characteristics, an operator can adjust the extending length of the puncture needle relative to the depth limiting sleeve through the depth limiting knob.

Preferably, one side of the shell facing the far end is provided with a scale mark part, the scale mark part is provided with a plurality of scales, the scales are arranged at intervals along the extending direction, the depth limiting knob comprises an indicating part, and the indicating part points to one scale of the scales in the moving process of the depth limiting knob.

According to the technical characteristics, an operator can read the moving distance of the depth-limiting sleeve.

Preferably, the pushing assembly further comprises a third limiting part, a first end of the third limiting part is connected with the first limiting part, a second end of the third limiting part is connected with the second limiting part, and the first end of the third limiting part extends towards the proximal end relative to the second end of the third limiting part;

the third limiting part comprises a third limiting groove, and two ends of the third limiting groove are respectively communicated with the first limiting groove and the second limiting groove.

According to the technical characteristics, the limiting part can be abutted with the third limiting part, so that the risk of false excitation is further reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic perspective view of a meniscus stapler in accordance with an embodiment of the invention;

FIG. 2 illustrates a cross-sectional view of a meniscus stapler taken along a plane of symmetry, according to an embodiment of the invention;

fig. 3 shows a schematic perspective view of a pushing assembly according to an embodiment of the invention;

FIG. 4 illustrates a cross-sectional view of a push assembly taken along a plane of symmetry in accordance with an embodiment of the present invention;

FIG. 5 shows a schematic perspective view of a spacing assembly according to an embodiment of the present invention;

FIG. 6 illustrates a side view of a spacing assembly according to an embodiment of the present invention;

Fig. 7 shows an enlarged view of the portion C in fig. 6;

FIG. 8 illustrates a schematic perspective view of a depth-limiting knob according to an embodiment of the present invention;

FIG. 9 illustrates a cross-sectional view of a depth-limiting knob along a plane of symmetry in accordance with an embodiment of the invention;

FIG. 10 shows a schematic representation of the relative positions of a first implant and a second implant when not activated;

FIG. 11 shows a schematic structural view of a puncture needle according to an embodiment of the present invention;

FIG. 12 shows a schematic view of the position of the push button when not activated;

FIG. 13 shows a schematic view of the position of the push button after actuation;

FIG. 14 shows a schematic view of the position of the meniscus suture instrument when the first implant is not activated;

FIG. 15 shows a schematic view of the position of the meniscus suture instrument after excitation of the first implant;

FIG. 16 shows a schematic view of the position of the meniscus suture instrument when the second implant is not activated;

FIG. 17 shows a schematic representation of the position of a meniscus stapler after activation of a second implant;

figure 18 shows a schematic view of the tear of the meniscus after suturing.

Icon: 100-pushing needles; 200-pushing assembly; 210-a pusher; 211-push button; 2111-a first plane; 2112-a second plane; 2113-depressions; 212-an elastic part; 213-neck; 220-a body portion; 221-a first shell portion; 222-a second shell portion; 223-a third shell portion; 230-a connection; 231-connecting holes; 240-a prompt tone part; 250-elastic driving part; 260-a damping portion; 261-a first damping member; 262-a second damping member; 270-mating portion; 300-limiting components; 310-a first limit part; 311-a first limit groove; 320-a second limit part; 321-a second limit groove; 330-a third limit part; 331-a third limit groove; 340-a housing; 341-left shell; 342-right shell; 343-a limiting hole; 350-a stabilizing section; 360-scale mark part; 400-puncture needle; 410-notch; 500-depth-limiting sleeve; 600-depth limiting knob; 610-knob body; 620-groove portion; 630-a turntable; 710—a first implant; 720-a second implant; 730-suture; 800-meniscus; 810-tear; f-direction of extension.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the present disclosure. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but rather, obvious variations may be made upon an understanding of the present disclosure, other than operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided solely to illustrate some of the many possible ways of implementing the methods, devices, and/or systems described herein that will be apparent after a review of the disclosure of the present application.

In the entire specification, when an element (such as a layer, region or substrate) is described as being "on", "connected to", "bonded to", "over" or "covering" another element, it may be directly "on", "connected to", "bonded to", "over" or "covering" another element or there may be one or more other elements interposed therebetween. In contrast, when an element is referred to as being "directly on," directly connected to, "or" directly coupled to, "another element, directly on," or "directly covering" the other element, there may be no other element intervening therebetween.

As used herein, the term "and/or" includes any one of the listed items of interest and any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in examples described herein could also be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatially relative terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be oriented "below" or "lower" relative to the other element. Thus, the term "above … …" includes both orientations "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

The features of the examples described herein may be combined in various ways that will be apparent after an understanding of the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.

Before the present application proposes, when using the meniscus suture device to suture the meniscus, the meniscus suture device needs to be rotated to puncture the meniscus, however, during the process of rotating the meniscus suture device, the knob may shift, and thus the problem of misexcitation of the implant occurs, based on which the meniscus suture device of the present application is proposed, which will be described below with reference to fig. 1-18.

As shown in fig. 1 and 2, the meniscus suture device includes:

a push needle 100, the push needle 100 comprising an axis extending along an extension direction F defining a proximal end and a distal end at opposite ends of the meniscal stapler in the extension direction F (one end pointed by an arrow of the extension direction F is the distal end, the other end is the proximal end);

the pushing assembly 200 is connected with the push needle 100 to push the push needle 100 to move along the extending direction F, the pushing assembly 200 comprises a pushing piece 210, and the pushing piece 210 can elastically deform along the radial direction of the push needle 100;

the spacing assembly 300, the spacing assembly 300 includes a first spacing portion 310 and a second spacing portion 320, the first spacing portion 310 is disposed on a side of the second spacing portion 320 near the distal end, in a radial direction of the push pin 100 (a direction perpendicular to the extending direction F in fig. 2), a distance between the first spacing portion 310 and the push pin 100 is greater than a distance between the second spacing portion 320 and the push pin 100, the pushing member 210 can move along both the first spacing portion 310 and the second spacing portion 320, and when the pushing member 210 is elastically deformed, the pushing member 210 can switch between two states of moving along the first spacing portion 310 and moving along the second spacing portion 320.

In the meniscus suture device of the present application, the distance between the first limiting portion 310 and the push needle 100 is greater than the distance between the second limiting portion 320 and the push needle 100, which makes the first limiting portion 310 and the second limiting portion 320 have a height difference, when the meniscus suture device is used to puncture the meniscus 800, the pushing member 210 is located on the end of the second limiting portion 320 of the limiting assembly 300 near the first limiting portion 310, if the operator hand drives the pushing member 210 to rotate, the pushing member 210 cannot move from the first limiting portion 310 to the second limiting portion 320, the push needle 100 cannot move distally, and thus the implant cannot be excited; when the implant is to be excited, the pushing member 210 can elastically deform in the radial direction, so that the operator can dial the pushing member 210 upward to move onto the second limiting portion 320, and then the pushing member 210 moves along the second limiting portion 320 to drive the push needle 100 to move toward the distal end

And the meniscus suture device is moved, so that the excitation of the implant is realized, the phenomenon of false excitation can not occur, and the safety of the operation is ensured 5.

As shown in fig. 3 and 4, the push assembly 200 further includes a main body 220, the main body 220 being connected to the push pin 100, the push member 210 including:

a push button 211, the push button 211 being movable along both the first limit portion 310 and the second limit portion 320;

and an elastic portion 212, one end of the elastic portion 212 is connected to the main body 220, the other end 0 of the elastic portion 212 is connected to the push button 211, and the elastic portion 212 is elastically deformable in a radial direction.

When the meniscus 800 is pierced by using the meniscus suture apparatus, as shown in fig. 12, the push button 211 is positioned on the end of the second limiting portion 320 near the first limiting portion 310, and when the implant is activated, the operator lifts the push button 211, deforms the elastic portion 212, and the push button 211 moves to the first limiting portion 310

Thereafter, the push button 211 is moved in a distal direction, thereby driving the main body 220 and the push needle 100 connected to the main body 5220 to move, and the implant is activated when the push button is moved to the most distal end of the first limiting portion 310 (the state shown in fig. 13) away from the second limiting portion 320.

As shown in fig. 3 and 4, the pushing member 210 further includes a neck 213, the push button 211 is connected to the elastic portion 212 through the neck 213, and the limiting assembly 300 includes a housing 340, a first limiting portion 310 and a second limiting portion

Both the two limiting portions 320 are connected to the housing 340, and both the first limiting portion 310 and the second limiting portion 3200 are recessed toward the inside of the housing 340. As shown in fig. 5 and 6, the first stopper 310 includes a first stopper

The second limiting portion 320 includes a second limiting groove 321, the first limiting groove 311 and the second limiting groove 321 extend along an extending direction F, and the first limiting groove 311 and the second limiting groove 321 are communicated.

Further, the main body 220 and the elastic portion 212 are provided inside the housing 340, the push button 5211 is provided outside the housing 340, and the neck 213 is slidable in the first and

second stopper grooves

311 and 321. In the process that the push button 211 moves along the predetermined direction, the neck 213 slides in the first limit groove 311 or the second limit groove 321, so that the neck 213 can be ensured to move only along the extending direction F, and the occurrence of the false excitation phenomenon is further avoided.

As shown in fig. 5 to 7, the limiting assembly 300 further includes a third limiting portion 330, a first end of the third limiting portion 330 is connected with the first limiting portion 310, a second end of the third limiting portion 330 is connected with the second limiting portion 320, the second end of the third limiting portion 330 extends towards the distal direction relative to the first end of the third limiting portion 330, a third limiting groove 331 is formed in the third limiting portion 330, and two ends of the third limiting groove 331 are respectively communicated with the first limiting groove 311 and the second limiting groove 321.

As shown in fig. 4, the push button 211 includes a first plane 2111 and a second plane 2112 connected to each other, an included angle between the elastic portion 212 and the second plane 2112 is an acute angle, and when the implant is not excited, the first plane 2111 abuts against the third limiting portion 330, so that the risk of false excitation can be further reduced. The operator may push button 211 proximally through first planar surface 2111, causing push pin 100 to move proximally.

In addition, the push button 211 further includes a concave portion 2113, the concave portion 2113 is concave from the second plane 2112 to the first plane 2111, a concave space is defined by the concave portion 2113, in the using process of the meniscus suture device, the thumb of an operator can be placed in the concave space, at this time, the operator can pick up the thumb, so that the elastic portion 212 is elastically deformed, and the push button 211 can move from the first limiting portion 310 to the second limiting portion 320, so as to be convenient for excitation.

As shown in fig. 3, the main body 220 is cylindrical, the elastic portion 212 is flat, the main body 220 is open at two ends of the extending direction F, the main body 220 includes a hollow portion, a first end of the elastic portion 212 is connected with the hollow portion, a second end of the elastic portion 212 is a free end, and the push button 211 is connected with the second end of the elastic portion 212, so that the elastic portion 212 can be elastically deformed in the radial direction, and the push button 211 is further switched between the first limiting portion 310 and the second limiting portion 320.

As shown in fig. 3 and 4, the pushing assembly 200 further includes a connection portion 230, the connection portion 230 is connected with the inner side wall of the main body portion 220, a connection hole 231 is formed in the connection portion 230, the connection hole 231 extends to the middle of the connection portion 230 along the extending direction F, and the push pin 100 is disposed in the connection hole 231. In this way, during the process of driving the main body 220 to move along the extending direction F by the push button 211, the connecting portion 230 moves accordingly, so as to push the push pin 100 to move along the extending direction F.

In addition, the pushing assembly 200 further includes a warning sound portion 240, where the warning sound portion 240 is connected to the connection portion 230, and a portion of the warning sound portion 240 protrudes toward the distal end with respect to the main body portion 220, and an area of a projection of the warning sound portion 240 onto the housing 340 along the extending direction F is smaller than an area of a projection of the main body portion 220 onto the housing 340 along the extending direction F. Since part of the alert sound part 240 protrudes toward the distal end relative to the main body part 220, when the push button 211 drives the main body part 220 toward the distal end, the alert sound part 240 collides with the housing 340 first; the projected area of the alert sound part 240 on the housing 340 along the extending direction F is smaller than the projected area of the main body part 220 on the housing 340 along the extending direction F, so that the volume of the pushing assembly 200 when striking the housing 340 can be reduced, and the noise generated when striking can be reduced, and when the alert sound part 240 strikes the housing 340, the push pin 100 reaches the predetermined position, and the implant excitation is successful.

In addition, the pushing assembly 200 further includes an elastic driving portion 250, as shown in fig. 2, one end of the elastic driving portion 250 is connected to the inner side wall of the housing 340, the other end is connected to the main body portion 220, the elastic driving portion 250 can be compressed or extended along the extending direction F, and when the push button 211 abuts against the third limiting portion 330, the elastic driving portion 250 is in a compressed state. When the thumb of the operator lifts the push button 211 up onto the first limiting part 310, the housing 340 can be driven by the elastic driving part 250 to move towards the distal end, so as to drive the push pin 100 to move towards the distal end, thereby realizing the excitation of the implant. In addition, when the elastic driving portion 250 does not exert enough force on the housing 340 to enable the push pin 100 to reach the predetermined position (when the push pin 100 reaches the predetermined position, the push button 211 reaches the distal end of the second limiting portion 320, the implant is activated), the operator may manually push the push button 211, thereby driving the housing 340 and the push pin 100 to move, so that the push pin 100 can reach the predetermined position.

Alternatively, the elastic driving part 250 is a spring.

As shown in fig. 3 and 4, the main body 220 includes a first shell portion 221, a second shell portion 222, and a third shell portion 223, the first shell portion 221, the second shell portion 222, and the third shell portion 223 are sequentially disposed along a direction opposite to the extending direction F, and two openings opposite to each other in the radial direction are opened in the second shell portion 222. The elastic driving part 250 may be a spring, the right end of which is fixed to the right end surface of the housing 340, and the left end of which is partially sleeved on the second housing part 222. When the push button 211 is located on the second limiting portion 320, the spring is in a compressed state, and when the operator lifts the push button 211 onto the first limiting portion 310, the spring stretches to push the main body portion 220 to move towards the distal end, so as to push the push pin 100 to move along the extending direction F.

It should be noted that although the virtual dividing line A-A 'between the first and

second shell portions

221 and 222 and the virtual dividing line B-B' between the second and

third shell portions

222 and 223 are shown in fig. 3, it should be understood that the above description of the first, second and

third shell portions

221, 222 and 223, respectively, is only for convenience of description of the shape of the body portion, and that in the entity of the push assembly 200, there is no dividing line between the first and

second shell portions

221 and 222 and between the second and

third shell portions

222 and 223.

As shown in fig. 3 and 4, the pushing assembly 200 further includes a damping portion 260, where the damping portion 260 is connected to the main body 220, and a portion of the damping portion 260 protrudes from the main body 220 toward the housing 340, and the housing 340 applies a force to the damping portion 260 in a radial direction toward the push pin 100, so that the damping portion 260 applies a force to the main body 220 toward the push pin 100, and further ensures that the push button 211 can be attached to the first limiting portion 310 or the second limiting portion 320 in a process of moving along the extending direction F.

As shown in fig. 3, the damping part 260 is positioned in the opening of the second shell part 222, the damping part 260 may include a first damping member 261 and a second damping member 262, the first damping member 261 is plate-shaped, the second damping member 262 is cube-shaped, one end of the first damping member 261 is connected with the third shell part 223, the other end of the first damping member 261 is a free end, the second damping member 262 is disposed on the free end of the first damping member 261, and the second damping member 262 protrudes toward the shell 340 with respect to the first damping member 261. The housing 340 can apply a force to the first damping member 261 towards the push pin 100, so that the main body 220 receives the force towards the push pin 100, and the main body 220 has a tendency to move towards the push pin 100 as a whole, so that the push button 211 can be guaranteed to be capable of sliding against the first limiting portion 310 or the second limiting portion 320.

In addition, by providing the damping portion 260, the overall feel of the pushing assembly 200 during excitation can be increased, the excitation process can be more closely perceived, and a more realistic experience is provided to the operator.

Further, the pushing assembly 200 includes two engaging portions 270, the two engaging portions 270 are disposed on the main body 220 along the extending direction F at intervals, the engaging portions 270 protrude toward the housing 340 relative to the main body 220, and the engaging portions 270 are attached to the housing 340. In the process that the pushing assembly 200 moves in the shell 340, the main body 220 is not in contact with the inner wall of the shell 340, the matching part 270 is attached to the inner wall of the shell 340, and the contact area between the pushing assembly 200 and the shell 340 is reduced by arranging the matching part 270, so that the phenomenon that the pushing assembly 200 is blocked in the sliding process is avoided.

As shown in fig. 5 and 6, the case 340 includes left and

right cases

341 and 342, and the left and

right cases

341 and 342 are symmetrical about a symmetry plane, which is parallel to the extending direction F. The side portion of the housing 340 near the distal end is provided with a limiting hole 343, and a protruding portion (not shown in fig. 5 and 6) extending toward the inside of the limiting hole 343 is disposed on the wall of the limiting hole 343.

As shown in FIG. 2, the meniscus suture instrument comprises a puncture needle 400, the push needle 100 is arranged in the puncture needle 400, as shown in FIG. 11, the puncture needle 400 comprises a notch 410 recessed from the outer side wall towards the inside of the puncture needle 400, and the convex part is matched with the notch 410, so that the puncture needle 400 can be prevented from rotating relative to the shell 340 in the circumferential direction and moving in the axial direction (extending direction F), and the relative position of the shell 340 and the puncture needle 400 is ensured not to change.

Preferably, the number of the protrusions is two, the two protrusions are opposite in the radial direction, the number of the recesses 410 is two, and the two protrusions are respectively disposed in the two recesses 410.

As shown in fig. 5 and 6, the spacing assembly 300 further comprises a stabilizing portion 350, the stabilizing portion 350 is connected to the housing 340, the meniscus suture device further comprises a depth limiting sleeve 500, the depth limiting sleeve 500 is connected to the stabilizing portion 350, the puncture needle 400 is arranged inside the depth limiting sleeve 500 in a penetrating manner, a part of the puncture needle 400 protrudes towards the distal direction relative to the depth limiting sleeve 500, and the depth limiting sleeve 500 can be attached to the surface of the meniscus 800 when the puncture needle 400 passes through the meniscus 800 so as to limit the penetrating depth of the puncture needle 400.

As shown in FIG. 2, the meniscus suture device further includes a depth limiting knob 600, the depth limiting knob 600 is connected with the depth limiting sleeve 500, the stabilizing portion 350 is extended in the extending direction F, and the depth limiting knob 600 can be moved along the stabilizing portion 350, so that the length of the puncture needle 400 extended with respect to the depth limiting sleeve 500 can be adjusted.

Preferably, the stabilizing portion 350 has an external thread, the depth limiting knob 600 has an internal thread, and the internal thread of the stabilizing portion 350 cooperates with the external thread of the depth limiting knob 600, so that the depth limiting knob 600 can move along the extending direction F, thereby driving the depth limiting sleeve 500 to move along the extending direction F.

In addition, as shown in fig. 5 and 6, the limiting assembly 300 further includes a scale marking part 360, a plurality of scales are provided on the scale marking part 360 at equal intervals along the extending direction F, the shell part marking part is fixed at the end of the shell 340, the depth limiting knob 600 includes an indication part, and in the moving process of the depth limiting knob 600, the indication part can point to one of the plurality of scales, and can read the moving distance of the depth limiting sleeve 500.

Optionally, the indication portion is an end surface of the groove portion 620 facing the housing 340, the end surface of the groove portion 620 facing the housing 340 can point to the scale, specifically, the scale mark portion 360 and the stabilizing portion 350 are arranged at intervals, the depth limiting knob 600 includes a knob body 610 and the groove portion 620, the groove portion 620 is fixed on an outer side wall of the knob body 610, a gap is formed between an inner wall of the groove portion 620 and an outer wall of the knob body 610, the depth limiting sleeve 500 is connected with the knob body 610, the stabilizing portion 350 is arranged in the knob body 610, the scale mark portion 360 is arranged in the gap between the inner wall of the groove portion 620 and the outer wall of the knob body 610, during the movement of the depth limiting knob 600, a part of the scale is located, a gap is formed between the inner wall of the groove portion 620 and the outer wall of the knob body 610, and the end surface of the groove portion 620 facing the housing 340 can point to one scale of the plurality of scales, so that the distance of the depth limiting sleeve 500 can be read.

As shown in fig. 8 and 9, the depth-limiting knob 600 further includes a rotary disk 630, the rotary disk 630 is sleeved outside the groove 620, and the rotary disk 630 is rotated to drive the knob body 610 and the groove 620 to rotate, so that the depth-limiting knob 600 can move along the extending direction F.

Before use of the meniscus suture apparatus, as shown in fig. 10, the puncture needle 400 is placed therein with the first implant 710 and the second implant 720, the first implant 710 being disposed on the distal-facing side (right side in fig. 10) of the push needle 100, the second implant 720 being disposed on the radial-direction side (upper side in fig. 10) of the push needle 100, the first implant 710 and the second implant 720 extending in the extending direction F.

Preferably, the first implant 710 and the second implant 720 may be made of a harder material such as PEEK (polyetheretherketone), or may be a suture or other softer implant.

Further, the length of the first limiting groove 311 in the extending direction F is greater than the length of the first implant 710, and the length of the second limiting groove 321 in the extending direction F is greater than the length of the second implant 720 in the extending direction F. In use of the meniscus suture apparatus, since the length of the first limiting groove 311 in the extending direction F is greater than the length of the first implant 710, the push button 211 can move a greater distance in the extending direction F than the first implant 710, so that it can be ensured that the first implant 710 can be pushed out of the puncture needle 400 when the push button 211 is moved to the most distal end of the first limiting part 310 after the push button 211 is lifted up to the first limiting part 310. Then, the push button 211 is moved to the nearest end of the second stopper 320 in the proximal direction, at this time, the second implant 720 is dropped to the front end of the push pin 100, and then the push button 211 is moved to the farthest end of the second stopper 320 in the distal direction, and since the length of the second stopper groove 321 in the extending direction F is greater than that of the second implant 720, it can be ensured that the second implant 720 is activated, so that the torn portion 810 of the meniscus 800 is sutured by the suture 730.

Before performing a meniscal suture using the meniscal suture device, the position of the meniscal suture device is shown in fig. 12, the elastic driving portion 250 is in a compressed state, at this time, the push button 211 abuts against the third limiting portion 330 (not shown in fig. 12), and the push assembly 200 does not drive the push needle 100 to move distally.

Before performing a meniscal suture, the depth limiting knob 600 may be rotated to a proper position according to the position of the tear of the meniscus, thereby adjusting the protruding length of the puncture needle 400 with respect to the depth limiting sleeve 500, and the depth limiting sleeve 500 contacts the upper surface of the meniscus when the depth limiting knob 600 is rotated to a proper position.

When the depth limiting knob 600 is rotated into position, as shown in fig. 14, the penetrating needle 400 passes through one side of the tear 810 of the meniscus 800, simultaneously driving the first implant 710 through the meniscus 800, and the depth limiting sleeve 500 abuts against the upper surface of the meniscus 800.

Then, the operator selects the push button 211 with the thumb, so that the push button 211 moves to the first limiting part 310, then under the action of the elastic driving part 250, the push button 211 continues to move towards the distal end, so that the push needle 100 moves towards the distal end in the puncture needle 400, and the first implant 710 is pushed to move towards the distal end, as shown in fig. 13 and 15, the push button 211 moves to the distal end of the first limiting part 310, the alert sound part 240 collides with the housing 340, the alert sound is emitted, the push needle 100 reaches the predetermined position, the first implant 710 leaves the puncture needle 400, and the first implant 710 is successfully excited.

After the first implant 710 is successfully activated, the meniscus 800 is pulled out through the puncture needle 400, then the push button 211 is moved to the proximal direction by the thumb until the push button 211 is abutted against the proximal end of the second limiting part, at this time, the second implant 720 falls to one side of the push needle 100 in the extending direction, then the push button 211 is released, the push button 211 is moved to the distal direction to be abutted against the third limiting part 330 under the action of the elastic driving part 250, at this time, the second implant 720 is moved to the distal direction for a certain distance, and the state of the meniscus suture instrument after movement is shown in fig. 12.

After the second implant 720 is moved distally, the depth limiting knob 600 may be adjusted to adjust the position of the depth limiting sleeve, after which the other side of the tear 810 is pierced using the piercing needle 400 so that the second implant 720 passes through the meniscus 800 until the depth limiting sleeve 500 abuts the upper surface of the meniscus 800, at which point a suture 730 is presented through the piercing hole of the meniscus 800 for the first time by the piercing needle 400, the suture 730 being connected to the second implant 720, as shown in fig. 16.

Then, in the same manner as the process of activating the first implant 710, the operator uses the thumb to pick up the push button 211, so that the push button 211 moves to the first limiting part 310, then under the action of the elastic driving part 250, the push button 211 continues to move distally, so that the push needle 100 moves distally in the puncture needle 400 to push the second implant 720 to move distally, the push button 211 moves to the distal end of the first limiting part 310, the alert sound part 240 collides with the housing 340, the alert sound is emitted, at this time, the push needle 100 reaches the predetermined position, the second implant 720 leaves the puncture needle 400, the second implant 720 is successfully activated, and the activated state is shown in fig. 17.

After the second implant 720 is successfully activated, the puncture needle 400 is pulled out, and then the suture 730 is tightened and locked, so that the tear 810 is closed, and the suturing of the tear 810 is completed, and the sutured state is shown in fig. 18.

It should be noted that the positional relationship between the first implant 710 and the second implant 720 is not limited to the positional relationship shown in fig. 18, and the positional relationship between the first implant 710 and the second implant 720 may be up-down, left-right, or other positional relationships according to the tearing position and the tearing state of the meniscus.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A meniscus stapler, the meniscus stapler comprising:

spacing subassembly, spacing subassembly includes first spacing portion and second spacing portion, first spacing portion sets up the second spacing portion be close to one side of distal end in radial direction, first spacing portion with distance between the push pin is greater than second spacing portion with distance between the push pin, the impeller can follow first spacing portion with second spacing portion both remove when the impeller takes place elastic deformation, the impeller can be followed first spacing portion removes and along second spacing portion removes two kinds of states between the switch.

2. The meniscus stapler of claim 1, wherein the pushing assembly further comprises a body portion connected to the push pin, the pushing member comprising:

3. The meniscus stapler of claim 2, wherein the pushing member further includes a neck connecting both the elastic portion and the push button,

the limiting assembly comprises a shell, the first limiting part and the second limiting part are both connected with the shell, the first limiting part comprises a first limiting groove, the second limiting part comprises a second limiting groove, and the first limiting groove and the second limiting groove both extend along the extending direction;

4. The meniscus stapler of claim 3, wherein the pushing assembly includes a mating portion extending from the body portion toward the housing, the mating portion conforming to the body portion;

5. The meniscus suture apparatus of claim 3, wherein the side of the housing near the distal end is provided with a limiting hole, and the inner side wall of the limiting hole is provided with a protruding part extending from the inner side wall to the inside of the limiting hole;

6. The meniscus suture apparatus of claim 5, wherein the meniscus suture apparatus is capable of activating a first implant and a second implant,

the first implant is arranged in the puncture needle, and the length of the first limit groove in the extending direction is larger than that of the first implant in the extending direction;

the second implant is arranged in the puncture needle, and the length of the second limiting groove in the extending direction is larger than that of the second implant in the extending direction.

7. The meniscus stapler of claim 3, wherein the stop assembly further comprises a cue tone portion connected to the body portion, a portion of the cue tone portion protruding toward the distal end relative to the body portion;

8. The meniscus stapler of claim 3, wherein the pushing assembly further comprises an elastic drive portion that is capable of being elongated or compressed along the extension direction;

the elastic driving part is arranged on one side of the main body part, which faces the proximal end, and is connected with the shell and the main body part, and when the push button is positioned at the second limiting part, the elastic driving part is compressed.

9. The meniscus stapler of claim 3, wherein the pushing assembly further comprises a damping portion, one end of the damping portion being connected to the housing, the other end of the damping portion protruding toward the housing, the housing exerting a force on the damping portion in the radial direction toward the push pin.

10. The meniscus stapler of claim 5, further comprising a depth limiting sleeve secured to a side of the housing facing the distal end;

11. The meniscus stapler of claim 10, wherein the stop assembly further comprises a stabilizing portion connected with a side of the housing facing the distal end, the stabilizing portion extending in the direction of extension, and a depth limiting knob;

12. The meniscus stapler of claim 11, wherein a side of the housing facing the distal end is provided with a scale marking portion provided with a plurality of scales equidistantly spaced along the extending direction;

the depth limiting knob comprises an indication part, and the indication part points to one scale of the scales in the moving process of the depth limiting knob.

13. The meniscus stapler of claim 3, wherein the pushing assembly further comprises a third limit portion, a first end of the third limit portion being connected to the first limit portion, a second end of the third limit portion being connected to the second limit portion, the first end of the third limit portion extending toward the proximal end relative to the second end of the third limit portion;