Disposable fibrous ring stitching instrument

Abstract

The invention relates to a disposable fibrous ring stitching instrument. The disposable fibrous ring stitching instrument comprises a puncture stitching assembly and a handle percussion assembly. The puncture suture assembly comprises a puncture needle, a puncture push rod and a suture line, the puncture needle is of a hollow structure, a needle head is arranged at one end of the puncture needle, the puncture push rod is slidably arranged in the puncture needle and provided with a line storage groove, and two line knots of the suture line are located in the line storage groove and the head of the puncture push rod respectively. The handle percussion assembly comprises a handle shell, a percussion trigger, a limiting shifting button and a puncture push block, and the percussion trigger is connected with the puncture push block and rotates to drive the puncture push block to slide; the limiting shifting button can slide up and down along the handle shell to control the limiting position of the puncture push block, and therefore switching of the initial position, the first-time percussion position and the second-time percussion position of the puncture suturing assembly is achieved. Through the design of the spring pieces and the flexible damping blocks, the limiting sliding grooves and the side sliding blocks slide stably, and operation is stable. The one-hand operation is realized, the fibrous ring suturing process is simplified, and the device has the characteristics of convenience in operation, accuracy in positioning, stability and reliability, is favorable for improving the operation efficiency, and is suitable for various minimally invasive operation scenes.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology and relates to a disposable fiber ring suture device. Background Technology

[0002] Minimally invasive surgical suturing is a fundamental procedure for surgeons to anastomose and fix incisions. During this process, surgeons typically hold a curved needle and use the suture thread to close the incision. However, suturing deep soft tissue incisions in minimally invasive surgery presents significant challenges. Because the hand cannot reach the incision site, the suturing effect is often poor, or even impossible. Existing technologies disclose several double-needle devices, i.e., straight needles plus curved needles. The problem is that, because the double needles in these devices limit the distance between the two needles and the direction of the suture, it is almost impossible to control the position of the two needles on either side of the incision, and the relative direction of the suture cannot be adjusted. Furthermore, if either needle is too close to the incision, the soft tissue at the incision edge may collapse, leading to suturing failure. To address these issues, single-needle suturing devices have been developed.

[0003] Existing single-needle suturing devices, such as Chinese Patent Publication No. CN116407185A, disclose a minimally invasive suturing instrument for the annulus fibrosus. This invention uses a single-needle suture device, inserting a needle at each end of the suture thread on both sides of the incision, so that the two knots of the suture thread pierce both sides of the incision. Finally, the suture thread is tied to the incision to complete the suturing. A safety knob and a secondary limit switch control the rod-shaped pusher to travel twice within the straight needle tube. Because knots are placed at both ends of the suture thread, the knots cannot be withdrawn from the soft tissue after entering it. It allows for autonomous control of the needle spacing and needle direction, making the suturing process more precise and reliable, overcoming the problems of suturing failure caused by the inability to adjust the needle spacing and needle direction in double-needle devices. However, it uses a safety knob and a secondary limit switch for two separate travel limits, requiring the user to operate with both hands, making it complex and inconvenient to use. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to solve the above problems and provide a disposable fiber ring suture device.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A disposable annulus fibrosus suture device includes a puncture and suturing assembly and a handle firing assembly; the puncture and suturing assembly includes a puncture needle, a suture thread, and a puncture pusher; the puncture needle has a hollow structure and a needle tip at one end; the puncture pusher is slidably disposed inside the puncture needle, and a suture storage groove is provided at the end near the needle tip; the suture thread has knots at both ends, and the two knots of the suture thread are respectively located in the suture storage groove of the puncture pusher and at the head of the puncture pusher;

[0007] The handle firing assembly includes a handle housing, a piercing push block, a firing trigger, and a limiting button. The piercing push block is slidably disposed within the handle housing and is fixedly connected to the piercing push rod. The firing trigger is rotatably mounted on the handle housing via a pin, and one end of the firing trigger is connected to the piercing push block, driving the piercing push block to slide by rotating the firing trigger. The limiting button is located on one side of the handle housing and slides up and down along the handle housing when flicked by a finger. A side slider is provided on one side of the piercing push block, and the side slider is arranged intersecting with the piercing push block. A limiting groove is provided on the side of the piercing push block opposite to the side slider, arranged along the sliding direction of the piercing push block. A limiting protrusion matching the limiting groove is provided on the side slider. The limiting button is fixedly disposed on the side slider. Flicking the limiting button by a finger causes the side slider to slide, causing the limiting protrusion to engage or disengage from the limiting groove.

[0008] Furthermore, the limiting switch has three position states during the toggle process, which correspond to the initial position of the puncture and suturing assembly, the first firing position, and the second firing position, respectively.

[0009] The limiting groove has a first limiting surface at one end near the puncture push rod and a second limiting surface at the other end, and the first limiting surface and the second limiting surface are arranged in a stepped manner; when the limiting protrusion is fitted into the limiting groove and contacts the first limiting surface, the puncture and suturing assembly is in the initial position, and the side slider limits the initial position of the puncture and suturing assembly.

[0010] When the limiting protrusion disengages from the step where the first limiting surface is located and enters the step where the second limiting surface is located, the puncture and suturing assembly is in the first firing position. The firing trigger drives the puncture push block to slide until the limiting protrusion contacts the second limiting surface, pushing out the knot at the head of the puncture push rod. The side slider performs the first firing limit on the puncture and suturing assembly.

[0011] As the side slider continues to slide until the limiting protrusion disengages from the second limiting surface, the puncture and suturing assembly is in the second firing position. The firing trigger drives the puncture push block to slide, pushing the knot in the storage groove of the puncture push rod out.

[0012] Furthermore, the handle housing is provided with a central partition plate, and the central partition plate is provided with a limiting slide groove; the side slider is slidably disposed in the limiting slide groove; the limiting slide groove is symmetrically provided with side slide grooves on both sides, the side slide groove includes a first slide groove and a second slide groove arranged in a stepped manner along the depth direction of the limiting slide groove, the first slide groove and the second slide groove are connected, and a third limiting surface is provided at the connection between the first slide groove and the second slide groove; the side slider is provided with protruding limiting sliders on both sides, the limiting sliders are slidably disposed in the side slide groove, and slide within the first slide groove and the second slide groove;

[0013] When the side slider slides from the initial position to the first firing position, the limit slider slides in the first groove until it abuts against the third limiting surface. When the limit switch is pressed, the limit slider slides into the second groove along the third limiting surface. If the limit switch is continued to be turned, the side slider will slide along the second groove to the second firing position.

[0014] Furthermore, a spring sheet is provided between the side slider and the limiting slide groove. One end of the spring sheet is fixedly connected to the side slider, and the other end is slidably engaged with the limiting slide groove. When the limiting button is pressed, the spring sheet is compressed at the same time, and the limiting slider slides into the second slide groove along the third limiting surface.

[0015] Furthermore, the limiting slide groove has mounting grooves on both sides that communicate with the side slide groove, and the size of the mounting groove is larger than the size of the limiting slider; when the side slider is installed, the limiting slider enters the side slide groove from the mounting groove.

[0016] Furthermore, flexible damping blocks are provided on both sides of the side slider, and the damping blocks slide in contact with the middle limiting groove.

[0017] Furthermore, a spring is connected between the firing trigger and the handle housing to provide firing damping.

[0018] Furthermore, the firing trigger is located at the front end of the handle housing, and a strip-shaped hole is provided on the side of the handle housing. The limit switch is located in the strip-shaped hole and is located behind the firing trigger. The user can operate the firing trigger and the limit switch with one hand by driving the firing trigger with the index finger and moving the limit switch with the thumb.

[0019] Furthermore, the handle housing is a two-part assembly structure.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. This invention, through the design of the handle firing assembly and the limiting switch, enables the suture device to be operated entirely with one hand. The firing trigger can be controlled by the index finger, while the limiting switch is adjusted by the thumb, significantly reducing the difficulty of traditional suture devices that require two-handed operation, improving the ease of operation for doctors in minimally invasive surgery, and is especially suitable for surgical scenarios in confined spaces.

[0022] 2. This invention, through the three position states of the limiting knob and the stepped arrangement of the limiting grooves, enables precise positioning of the puncture suturing component, thereby ensuring that the suture knot is accurately pushed out on both sides of the incision. This design effectively avoids the soft tissue collapse at the incision edge caused by the fixed needle spacing or non-adjustable direction of traditional suture devices, significantly improving the success rate and quality of suturing.

[0023] 3. The spring plate design between the side slider and the limiting groove, as well as the application of the flexible damping block in this invention, provide appropriate rebound force and damping effect. This not only improves the stability of the limiting knob during sliding but also avoids misoperation that may be caused by violent sliding, further improving the reliability of the device.

[0024] 4. In this invention, the limiting slide groove and the side slide groove are designed separately. The installation groove guides the side slide block, making installation and disassembly more convenient. At the same time, the internal structure of the device is simple and easy to maintain. This design significantly reduces production costs and maintenance difficulty, making this invention more economical and practical.

[0025] 5. Compared with existing double-needle tube or traditional single-needle tube designs, this invention greatly shortens suturing time, reduces the doctor's workload, and significantly reduces the failure rate caused by complex operation through precise positioning and single-handed operation, thereby improving the overall surgical efficiency.

[0026] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0028] Figure 1 This is a perspective view of the disposable fiber ring suture device of the present invention.

[0029] Figure 2 This is a front view of the disposable fiber ring suture device of the present invention.

[0030] Figure 3 This is a schematic diagram of the internal front structure of the disposable fiber ring suture device of the present invention.

[0031] Figure 4 This is an enlarged view of the internal front of the disposable fiber ring suture device of the present invention.

[0032] Figure 5 This is an enlarged view of the internal reverse side of the disposable fiber ring suture device of the present invention.

[0033] Figure 6 This is a schematic diagram of the cooperation between the side slider and the puncture pusher in this invention.

[0034] Figure 7 This is a schematic diagram of the structure of the partition plate in this invention.

[0035] Figure 8 This is a schematic diagram of the front structure of the limit switch knob in this invention.

[0036] Figure 9 This is a schematic diagram of the reverse side structure of the limit switch in this invention.

[0037] Figure 10 This is a schematic diagram of the puncture pusher in this invention.

[0038] Reference numerals: 1-Puncture needle; 2-Handle housing; 3-Firing trigger; 4-Limit switch; 5-Needle tip; 6-Puncture push rod; 7-Puncture push block; 8-Side slider; 9-Spring; 10-Central partition; 11-First limiting surface; 12-Second limiting surface; 13-Limiting protrusion; 14-Limiting groove; 15-First groove; 16-Third limiting surface; 17-Second groove; 18-Mounting groove; 19-Limiting slider; 20-Damping block; 21-Spring plate. Detailed Implementation

[0039] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0040] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0041] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0042] Please see Figures 1-10 This is a disposable annular fiber suture device, comprising a puncture and suturing assembly and a handle firing assembly; the puncture and suturing assembly includes a puncture needle 1, a suture thread, and a puncture pusher 6; the puncture needle 1 has a hollow structure and a needle tip 5 is provided at one end; the puncture pusher 6 is slidably disposed inside the puncture needle 1, and a suture storage groove is provided at the end near the needle tip 5; both ends of the suture thread are provided with knots, the two knots of the suture thread being located in the suture storage groove of the puncture pusher 6 and the head of the puncture pusher 6, respectively; the puncture and suturing assembly can adopt the structure in CN116407185A in specific implementation, which will not be described in detail here.

[0043] The handle firing assembly includes a handle housing 2, a piercing push block 7, a firing trigger 3, and a limit switch 4. The piercing push block 7 is slidably disposed within the handle housing 2 and is fixedly connected to the piercing push rod 6. The firing trigger 3 is rotatably disposed on the handle housing 2 via a pin, and one end of the firing trigger 3 is connected to the piercing push block 7. The piercing push block 7 is driven to slide by the rotation of the firing trigger 3. The limit switch 4 is disposed on one side of the handle housing 2 and slides up and down along the handle housing 2 when flicked by a finger. A side slider 8 is disposed on one side of the piercing push block 7, and the side slider 8 is arranged intersecting with the piercing push block 7. A limit groove is disposed on the side of the piercing push block 7 opposite to the side slider 8, which is arranged along the sliding direction of the piercing push block 7. A limit protrusion 13 matching the limit groove is disposed on the side slider 8. The limit switch 4 is fixedly disposed on the side slider 8. When the limit switch 4 is flicked by a finger, the side slider 8 is driven to slide, so that the limit protrusion 13 engages or disengages from the limit groove.

[0044] In this embodiment, the limiting button 4 has three position states during the tossing process, which correspond to the initial position of the puncture and suturing assembly, the first firing position, and the second firing position, respectively; the limiting groove is provided with a first limiting surface 11 at one end near the puncture push rod 6, and a second limiting surface 12 at the other end, and the first limiting surface 11 and the second limiting surface 12 are arranged in a stepped manner.

[0045] When the limiting protrusion 13 is fitted into the limiting groove and contacts the first limiting surface 11, the puncture and suturing assembly is in the initial position, and the side slider 8 limits the initial position of the puncture and suturing assembly.

[0046] When the limiting protrusion 13 disengages from the step where the first limiting surface 11 is located and enters the step where the second limiting surface 12 is located, the puncture and suturing assembly is in the first firing position. The firing trigger 3 drives the puncture push block 7 to slide until the limiting protrusion 13 contacts the second limiting surface 12, pushing out the knot at the head of the puncture push rod 6. The side slider 8 performs the first firing limit on the puncture and suturing assembly.

[0047] When the side slider 8 continues to slide until the limiting protrusion 13 disengages from the second limiting surface 12, the puncture and suturing assembly is in the second firing position. The firing trigger 3 drives the puncture push block 7 to slide, pushing the knot in the storage groove of the puncture push rod 6 out.

[0048] A central partition 10 is provided inside the handle housing 2, and a limiting groove 14 is provided on the central partition 10; the side slider 8 is slidably disposed in the limiting groove 14; the limiting groove 14 is symmetrically provided with side grooves on both sides, and the side grooves include a first groove 15 and a second groove 17 arranged in a stepped manner along the depth direction of the limiting groove 14. The first groove 15 and the second groove 17 are connected, and a third limiting surface 16 is provided at the connection between the first groove 15 and the second groove 17; the side slider 8 is provided with protruding limiting sliders 19 on both sides, and the limiting sliders 19 are slidably disposed in the side grooves and slide within the first groove 15 and the second groove 17;

[0049] When the side slider 8 slides from the initial position to the first firing position, the limit slider 19 slides in the first groove 15 until it abuts against the third limit surface 16. When the limit button 4 is pressed, the limit slider 19 slides into the second groove 17 along the third limit surface 16. If the limit button 4 is turned again, the side slider 8 will slide along the second groove 17 to the second firing position.

[0050] A spring plate 21 is provided between the side slider 8 and the limiting slide groove 14. One end of the spring plate 21 is fixedly connected to the side slider 8, and the other end is slidably engaged with the limiting slide groove 14. When the limiting button 4 is pressed, the spring plate 21 is compressed at the same time, and the limiting slider 19 slides into the second slide groove 17 along the third limiting surface 16.

[0051] The limiting slide groove 14 has mounting grooves 18 on both sides that communicate with the side slide groove. The size of the mounting groove 18 is larger than the size of the limiting slider 19. When the side slider 8 is installed, the limiting slider 19 enters the side slide groove from the mounting groove 18.

[0052] Flexible damping blocks 20 are provided on both sides of the side slider 8, and slide in contact with the middle limit slide groove 14 through the damping blocks 20. A spring 9 is connected between the firing trigger 3 and the handle housing 2, and the firing damping is provided by the spring 9.

[0053] The handle housing 2 is a two-part assembly structure, connected as one piece by snap-fit ​​or screws. The firing trigger 3 is located at the front end of the handle housing 2. A strip-shaped hole is provided on the side of the handle housing 2, and the limit switch 4 is located in the strip-shaped hole, with the limit switch 4 located behind the firing trigger 3. The user can operate the firing trigger 3 with one hand by moving the firing trigger 3 with the index finger and the limit switch 4 with the thumb.

[0054] In this embodiment, the disposable annulus fibrosus suture device is used in two separate firing processes. The two knots of the suture are placed on either side of the incision before being tied and sutured. The entire firing process is completed with one hand, with the index finger controlling the trigger 3 and the thumb controlling the limit switch 4, simplifying the doctor's operation.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A disposable fiber ring suture device, characterized in that: It comprises a puncture suturing assembly and a handle firing assembly; the puncture suturing assembly comprises a puncture needle, a suture thread, and a puncture push rod; the puncture needle is a hollow structure, and a needle head is arranged at one end; the puncture push rod is slidably arranged in the puncture needle, and a wire storage groove is arranged at one end close to the needle head; both ends of the suture thread are provided with a wire knot, and the two wire knots of the suture thread are respectively located in the wire storage groove of the puncture push rod and the head of the puncture push rod; The handle firing assembly comprises a handle housing, a puncture push block, a firing trigger, and a limit dial button, wherein the puncture push block is slidably disposed in the handle housing and is fixedly connected to the puncture push rod; the firing trigger is rotatably disposed on the handle housing through a pin shaft, and one end of the firing trigger is connected to the puncture push block, and the puncture push block is driven to slide by rotating the firing trigger; the limit dial button is disposed on one side of the handle housing, and slides up and down along the handle housing under the manipulation of a finger; a side slider is disposed on one side of the puncture push block, and the side slider and the puncture push block are arranged to intersect; a side of the puncture push block opposite to the side slider is provided with a limit groove arranged along the sliding direction of the puncture push block, and a limit protrusion matching the limit groove is provided on the side slider; the limit dial button is fixedly disposed on the side slider, and the side slider is driven to slide by the finger to manipulate the limit dial button, so that the limit protrusion is engaged with or separated from the limit groove.

2. The disposable fiber ring suture device according to claim 1, characterized in that: The limit dial button includes three position states during the toggling process, which respectively correspond to the initial position, the first firing position, and the second firing position of the puncture and suturing assembly; The limiting groove is provided with a first limiting surface at one end close to the puncture push rod, and a second limiting surface at the other end, and the first limiting surface and the second limiting surface are arranged in a stepped manner; when the limiting protrusion is embedded in the limiting groove and contacts the first limiting surface, the puncture suturing assembly is in the initial position, and the side slider limits the initial position of the puncture suturing assembly; When the limiting protrusion is separated from the step where the first limiting surface is located and enters the step where the second limiting surface is located, the puncture and suturing assembly is in the first firing position, and the firing trigger drives the puncture push block to slide until the limiting protrusion contacts the second limiting surface, pushes out the thread knot on the head of the puncture push rod, and the side slider performs the first firing limit on the puncture and suturing assembly; When the side slide block continues to slide until the limiting protrusion is separated from the second limiting surface, the puncture suturing assembly is in the second firing position, and the firing trigger drives the puncture push block to slide, pushing out the wire knot in the wire storage groove of the puncture push rod.

3. The disposable fiber ring suture device according to claim 2, characterized in that: A middle partition is provided in the handle housing, and a limiting slide groove is provided on the middle partition; the side slider is slidably arranged in the limiting slide groove; side slide grooves are symmetrically provided on both sides of the limiting slide groove, and the side slide grooves include a first slide groove and a second slide groove arranged in a step-like manner along the depth direction of the limiting slide groove, the first slide groove is connected to the second slide groove, and a third limiting surface is provided at the connection between the first slide groove and the second slide groove; raised limiting sliders are provided on both sides of the side slider, and the limiting slider is slidably arranged in the side slide groove and slides in the first slide groove and the second slide groove; When the side slide block slides from the initial position to the first firing position, the limit slide block slides correspondingly in the first slide groove until it contacts the third limit surface. When the limit dial button is pressed, the limit slide block slides into the second slide groove along the third limit surface. At this time, continue to push the limit dial button, and the side slide block will slide along the second slide groove to the second firing position.

4. The disposable fiber ring suture device according to claim 3, characterized in that: A spring sheet is provided between the side slider and the limiting slide groove, one end of the spring sheet is fixedly connected to the side slider, and the other end is slidably matched with the limiting slide groove; when the limiting dial button is pressed, the spring sheet is compressed at the same time, and the limiting slider slides into the second slide groove along the third limiting surface.

5. The disposable fiber ring suture device according to claim 3, characterized in that: Both sides of the limiting slide groove are provided with mounting grooves communicated with the side slide grooves, and the size of the mounting grooves is larger than the size of the limiting sliding block; when the side sliding block is installed, the limiting sliding block enters the side slide groove from the mounting groove.

6. The disposable fiber ring suture device according to claim 3, characterized in that: Flexible damping blocks are arranged on both sides of the side sliding block, and are in sliding contact with the middle limit sliding groove through the damping blocks.

7. The disposable fiber ring suture device according to claim 1, characterized in that: A spring is connected between the firing trigger and the handle housing, and firing damping is provided by the spring.

8. The disposable fiber ring suture device according to claim 1, characterized in that: The firing trigger is arranged at the front end of the handle shell, a strip hole is arranged on the side of the handle shell, the limit button is arranged in the strip hole, and the limit button is located at the rear side of the firing trigger.

9. The disposable fiber ring suture device according to claim 1, characterized in that: The handle housing is a two-half combined structure.

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