Disposable fibrous ring stitching instrument

Abstract

The invention provides a disposable fibrous ring stitching instrument, and relates to the technical field of medical instruments. The stitching instrument comprises a handle shell, a stitching assembly, a transmission assembly and a driving assembly, and the transmission assembly is located in the handle shell and connected with the driving assembly to drive the stitching assembly. The suturing assembly comprises a needle tube, a puncture needle and a thread needle, the needle tube is fixed at the front end of the handle shell, and fixing plates are arranged at the tail ends of the puncture needle and the thread needle respectively and can slide in the handle shell. The driving assembly comprises a trigger and a side key, the trigger controls the needle to move, the side key controls the puncture needle to move, and therefore puncture and suture operation is achieved. The transmission assembly comprises a side sliding block, a duplicate gear, a transmission rack and a driving rack, the side key is used for driving the side sliding block to slide downwards and driving the puncture needle, and the trigger controls the needle to penetrate. According to the invention, the convenience of single-hand operation is realized, the man-machine engineering design is optimized, the operation steps are simplified, and the device is suitable for repairing the annulus fibrosus in minimally invasive surgery and has higher clinical application value.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices and relates to a disposable fiber ring suture device. Background Art

[0002] In recent years, with the aging of the population and the changes in people's work and lifestyle, the incidence of lumbar disc herniation has continued to rise, which has brought a great burden to the patient's family and society. The intervertebral disc is located between adjacent vertebrae in the spine and is composed of annulus fibrosus, nucleus pulposus and cartilage endplates. It can increase the range of spinal motion, bear loads, and play a role in buffering and protecting the spinal cord. Intervertebral disc degeneration is a very complex disease. It may be related to factors such as aging, genetics, lesions and intervertebral disc rupture, but the connection between degenerative changes and low back pain is still unclear. The annulus fibrosus is an important component of the intervertebral disc and plays a key role in intervertebral disc degeneration. When the integrity of the annulus fibrosus is broken, the protruding nucleus pulposus will cause lumbar disc herniation in this process, which is one of the main pathogenesis of lumbar disc herniation. No matter how much the integrity of the annulus fibrosus is damaged, it may increase the probability of intervertebral disc degeneration and nucleus pulposus herniation. Therefore, when the lumbar disc is prolapsed, it is very necessary to repair the defect of the annulus fibrosus. Annulus fibrosus suture repair has gradually become a routine step in the surgical treatment of intervertebral disc herniation. Using a disposable annulus fibrosus suture device to repair the annulus fibrosus can effectively reduce the recurrence rate.

[0003] The disposable fiber ring sutures currently available on the market are mainly mechanical. The mechanical sutures have a relatively simple structure, but they require a large amount of hand strength from the doctor to control them during operation, and the operation accuracy is low, which can easily cause problems such as uneven sutures and loose sutures. In addition, the existing sutures require multiple switches of the locking device during the suturing process to tighten and lock the sutures. This operation not only increases the operation time, but also increases the doctor's operating burden, which may lead to intraoperative operational errors or poor suturing effects. Although some improved sutures have solved the problem of cumbersome operation, they have deficiencies in ergonomic design, are difficult to operate with one hand, and lack precise control devices, which is not conducive to achieving refined operations.

[0004] Therefore, the existing disposable fiber annulus suture device still has room for improvement in terms of ease of operation, one-handed control, ergonomic design, suturing effect, etc. In view of these shortcomings, the present invention aims to provide an improved disposable fiber annulus suture device, simplify the operation process, optimize the ergonomic design, improve the convenience of one-handed operation and the accuracy of suturing, so as to achieve a better fiber annulus repair effect. Summary of the invention

[0005] In view of this, the object of the present invention is to solve the above-mentioned problem and provide a disposable fiber ring suture device.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A disposable fiber ring suture device, comprising a handle housing, a suturing assembly, a transmission assembly, and a drive assembly; the transmission assembly is located in the handle housing, the drive assembly is transmission-connected with the suturing assembly through the transmission assembly, the suturing assembly comprises a needle tube and a puncture needle and a thread needle which are independently slidably arranged in the needle tube; the needle tube is fixedly arranged at the front end of the handle housing, the tail end of the puncture needle is provided with a puncture needle fixing plate, and the tail end of the thread needle is provided with a thread needle fixing plate; the puncture needle fixing plate and the thread needle fixing plate are both slidably arranged in the handle housing; the drive assembly comprises a trigger and a side button, the trigger is rotationally arranged at the front end of the handle housing, and is transmission-connected with the thread needle fixing plate; the side button is slidably arranged on the side of the handle housing, and slides up and down relative to the handle housing, the side button is transmission-connected with the puncture needle fixing plate, and the thread needle fixing plate and the puncture needle fixing plate are respectively driven to move by the trigger and the side button, thereby driving the thread needle and the puncture needle to move, thereby realizing the puncture and suturing operation.

[0008] Furthermore, the transmission assembly includes a side slider, a double gear, a transmission rack, and a driving rack; the side slider is slidably arranged in the handle shell and moves along the up and down directions of the handle shell; the side button is arranged on the side slider and extends out of the handle shell; the transmission rack is arranged on the side slider, and the driving rack is arranged on the puncture needle fixing plate; the double gear is rotatably arranged in the handle shell, and one end is meshed with the transmission rack and the other end is meshed with the driving rack; when the user holds the handle shell and pushes the side button downward, the side slider slides downward, and power is transmitted through the transmission rack, the double gear, and the driving rack in turn to push out the puncture needle to realize the puncture operation; the tail end of the trigger is connected to the thread needle fixing plate, so that the thread needle is driven to move by the trigger, driving the suture thread on the thread needle to realize the threading operation.

[0009] Furthermore, a strip hole and a strip groove are provided on the handle shell, the side slider is slidably arranged in the strip groove, and the side button is fixed on the side slider and extends from the strip hole to the outside of the handle shell; raised flexible damping blocks are provided on both sides of the side slider, and limiting grooves are provided on the side walls of the strip groove, and the side slider slides in cooperation with the strip groove through the flexible damping block, and when the flexible damping block slides into the limiting groove, the side slider is limited, and when a force is applied by the side button to deform the flexible damping block and escape from the limiting groove, the side slider resumes the sliding state.

[0010] Furthermore, a middle partition is fixedly provided in the handle housing, a slide groove is provided on the middle partition, and the puncture needle fixing plate and the thread needle fixing plate are respectively arranged on both sides of the middle partition, and both are slidably matched with the slide groove of the middle partition;

[0011] The double gear passes through the middle partition and is rotatably arranged on the middle partition; the side slider is slidably arranged in the slide groove of the middle partition and is located on the same side of the middle partition as the needle fixing plate; the driving rack is slidably arranged on the middle partition and is located on the same side of the middle partition as the puncture needle fixing plate.

[0012] Furthermore, flexible damping blocks are provided at the upper and lower parts of the side slider, the upper part of the side slider is slidably matched with the strip groove, and the lower part is slidably matched with the slide groove of the middle partition, and the transmission rack is arranged at the lower part of the side slider.

[0013] Furthermore, a transmission groove is provided at the tail end of the trigger, and the thread needle fixing plate is connected to the transmission groove through a pin shaft. When the trigger rotates, the pin shaft slides relatively in the transmission groove, thereby converting the rotational motion of the trigger into the linear motion of the thread needle fixing plate.

[0014] Furthermore, the needle tube includes a straight tube and a curved tube, the puncture needle is slidably arranged in the straight tube; the suture needle is slidably arranged in the curved tube; a side hole is provided on the front end side of the puncture needle; the front end of the curved tube is bent and opposite to the side hole, and when the suture needle is extended, it carries the suture thread through the side hole.

[0015] Furthermore, the handle housing is a two-half combined structure.

[0016] The beneficial effects of the present invention are:

[0017] 1. The transmission assembly designed in the present invention can realize the linkage control of the puncture needle and the thread needle by setting the cooperation of the trigger and the side button, thereby simplifying the suturing operation steps. Compared with the traditional suturing device, the design of the side button and the trigger makes the operation of the device more ergonomic. The present invention does not need to frequently switch the lock switch of the handle during the puncture and suturing process, which greatly reduces the operation steps and makes the whole operation more coherent and simple.

[0018] 2. The transmission mechanism of the side slider and the double gear of the present invention ensures that the puncture needle and the suture needle can move accurately. During the pressing of the side button, the transmission rack, the double gear and the drive rack cooperate with each other to accurately transmit the operating force, avoiding the needle deviation caused by unstable operation of the traditional suture device, improving the suturing accuracy, and effectively reducing the risk of recurrence after surgery.

[0019] 3. The limiting structure of the present invention (i.e., the flexible damping block cooperates with the limiting groove in the handle shell) ensures that the puncture needle can be automatically locked after piercing the fiber ring, and can only be unlocked when the operator applies a relatively large force again, avoiding potential risks caused by operational errors.

[0020] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0022] Figure 1 It is an overall schematic diagram of the disposable fiber ring suture device in the present invention.

[0023] Figure 2 The figure is a schematic diagram of the internal structure of the disposable fiber ring suture device in the present invention.

[0024] Figure 3 It is a schematic diagram of the internal front structure of the disposable fiber ring suture device in the present invention.

[0025] Figure 4 The figure is a schematic diagram of the internal reverse structure of the disposable fiber ring suture device of the present invention.

[0026] Figure 5 It is a schematic diagram of the assembly of the side slider and the handle housing of the present invention.

[0027] Figure 6 It is a partial schematic diagram of the handle housing in the present invention.

[0028] Figure 7 This is a front view of the side button of the present invention.

[0029] Figure 8 This is a schematic diagram of the reverse side of the side button in the present invention.

[0030] Fig. 9 It is a schematic diagram of the tip structure of the suturing assembly of the present invention.

[0031] Fig.10 It is a schematic diagram of the middle partition in the present invention.

[0032] Figure markings: 1-handle housing; 2-suture assembly; 3-trigger; 4-side button; 5-side slider; 6-flexible damping block; 7-middle partition; 8-double gear; 9-transmission rack; 10-drive rack; 11-bar hole; 12-bar groove; 13-limiting groove; 21-needle housing; 22-puncture needle; 23-bend tube; 24-thread needle; 25-thread needle fixing plate; 26-puncture needle fixing plate; 31-transmission groove. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways 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 only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0035] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] See also Figures 1 to 10 , is a disposable fiber ring suture device, including a handle housing 1, a suturing assembly 2, a transmission assembly, and a driving assembly; the transmission assembly is located in the handle housing 1, and the driving assembly is connected to the suturing assembly 2 through the transmission assembly, and the suturing assembly 2 includes a needle tube and a puncture needle 22 and a thread needle 24 that are independently slidably arranged in the needle tube; the needle tube is fixedly arranged at the front end of the handle housing 1, and a puncture needle fixing plate 26 is arranged at the tail end of the puncture needle 22, and a thread needle fixing plate 25 is arranged at the tail end of the thread needle 24; the puncture needle fixing plate 26 and the thread needle fixing plate 25 are both slidably arranged in the handle housing 1; the driving assembly includes a trigger 3 and a side button 4, the trigger 3 is rotatably arranged at the front end of the handle housing 1, and is connected to the thread needle fixing plate 25; the side button 4 is slidably arranged on the side of the handle housing 1, and slides up and down relative to the handle housing 1, and the side button 4 is connected to the puncture needle fixing plate 26, and the thread needle fixing plate 25 and the puncture needle fixing plate 26 are driven to move by the trigger 3 and the side button 4, thereby driving the thread needle 24 and the puncture needle 22 to move, so as to realize the puncture and suturing operation.

[0037] The transmission assembly includes a side slider 5, a double gear 8, a transmission rack 9, and a driving rack 10; the side slider 5 is slidably arranged in the handle housing 1 and moves in the up and down directions of the handle housing 1; the side button 4 is arranged on the side slider 5 and extends out of the handle housing 1; the transmission rack 9 is arranged on the side slider 5, and the driving rack 10 is arranged on the puncture needle fixing plate 26; the double gear 8 is rotatably arranged in the handle housing 1, and one end is meshed with the transmission rack 9 and the other end is meshed with the driving rack 10; when the user holds the handle housing 1 and pushes the side button 4 downward, the side slider 5 slides downward, and transmits power through the transmission rack 9, the double gear 8, and the driving rack 10 in turn, so as to push out the puncture needle 22 and realize the puncture operation; the tail end of the trigger 3 is connected to the thread needle fixing plate 25, so that the thread needle 24 is driven to move through the trigger 3, driving the suture thread on the thread needle 24 to realize the threading operation.

[0038] A strip hole 11 and a strip groove 12 are provided on the handle housing 1, and the side slider 5 is slidably arranged in the strip groove 12, and the side button 4 is fixedly arranged on the side slider 5 and extends from the strip hole 11 to the outside of the handle housing 1; raised flexible damping blocks 6 are provided on both sides of the side slider 5, and limiting grooves 13 are provided on the side walls of the strip groove 12. The side slider 5 is slidably matched with the strip groove 12 through the flexible damping block 6. When the flexible damping block 6 slides into the limiting groove 13, the side slider 5 is limited. When a force is applied by the side button 4 to deform the flexible damping block 6 and escape from the limiting groove 13, the side slider 5 resumes the sliding state.

[0039] A middle partition plate 7 is fixedly arranged in the handle shell 1, and a slide groove is arranged on the middle partition plate 7. The puncture needle fixing plate 26 and the thread needle fixing plate 25 are respectively arranged on both sides of the middle partition plate 7, and both are slidably matched with the slide groove of the middle partition plate 7; the double gear 8 passes through the middle partition plate 7 and is rotatably arranged on the middle partition plate 7; the side slider 5 is slidably arranged in the slide groove of the middle partition plate 7, and is located on the same side of the middle partition plate 7 as the thread needle fixing plate 25; the driving rack 10 is slidably arranged on the middle partition plate 7, and is located on the same side of the middle partition plate 7 as the puncture needle fixing plate 26.

[0040] Flexible damping blocks 6 are provided at the upper and lower parts of the side slider 5 . The upper part of the side slider 5 is slidably matched with the strip groove 12 , and the lower part is slidably matched with the slide groove of the middle partition 7 . The transmission rack 9 is provided at the lower part of the side slider 5 .

[0041] A transmission groove 31 is provided at the tail end of the trigger 3, and the thread needle fixing plate 25 is connected to the transmission groove 31 through a pin shaft. When the trigger 3 rotates, the pin shaft slides relatively in the transmission groove 31, thereby converting the rotational motion of the trigger 3 into the linear motion of the thread needle fixing plate 25.

[0042] The needle tube includes a straight tube and a curved tube 23, which are fixedly mounted on both sides of the needle housing 21, and the needle housing is fixedly mounted on the handle housing. The puncture needle 22 is slidably mounted in the straight tube; the thread needle 24 is slidably mounted in the curved tube 23; a side hole is provided on the front side of the puncture needle 22; the front end of the curved tube 23 is bent and opposite to the side hole, and the thread needle 24 carries the suture thread through the side hole when it is extended.

[0043] In this embodiment, the handle housing 1 is a two-half structure, divided into an upper housing and a lower housing, which are connected by buckle connection or screws.

[0044] The usage of this implementation is as follows:

[0045] (1) Hold the suture device and insert the curved tube 23 from one side of the annulus fibrosus incision.

[0046] (2) Push the side button 4 downward until it stops, so as to push the puncture needle 22 into the other side of the incision;

[0047] (3) Pull the trigger 3 downward until it stops, and feed the suture thread from the thread needle 24 into the side hole of the puncture needle 22;

[0048] (4) Push the side button 4 to make it disengage from the limiting groove 13, so that the puncture needle 22 and the suture thread can be withdrawn together;

[0049] (5) Pull out the suture device, use the knot pusher to tighten the knot, cut the suture thread, and the suturing is completed.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A disposable fiber ring suture device, comprising a handle housing, a suturing assembly, a transmission assembly, and a drive assembly; the transmission assembly is located in the handle housing, and the drive assembly is connected to the suturing assembly through the transmission assembly, characterized in that: The suturing assembly includes a needle tube and a puncture needle and a thread needle which are independently slidably arranged in the needle tube; the needle tube is fixedly arranged at the front end of the handle shell, the tail end of the puncture needle is provided with a puncture needle fixing plate, and the tail end of the thread needle is provided with a thread needle fixing plate; the puncture needle fixing plate and the thread needle fixing plate are both slidably arranged in the handle shell; the driving assembly includes a trigger and a side button, the trigger is rotatably arranged at the front end of the handle shell, and is transmission-connected with the thread needle fixing plate; the side button is slidably arranged on the side of the handle shell, and slides up and down relative to the handle shell, the side button is transmission-connected with the puncture needle fixing plate, and the thread needle fixing plate and the puncture needle fixing plate are respectively driven to move by the trigger and the side button, thereby driving the thread needle and the puncture needle to move, thereby realizing the puncture and suturing operation.

2. The disposable fiber ring suture device according to claim 1, characterized in that: The transmission assembly includes a side slider, a double gear, a transmission rack, and a driving rack; the side slider is slidably arranged in the handle shell and moves along the up and down directions of the handle shell; the side button is arranged on the side slider and extends out of the handle shell; the transmission rack is arranged on the side slider, and the driving rack is arranged on the puncture needle fixing plate; the double gear is rotatably arranged in the handle shell, and one end is meshed with the transmission rack and the other end is meshed with the driving rack; when the user holds the handle shell and pushes the side button downward, the side slider slides downward, and power is transmitted through the transmission rack, the double gear, and the driving rack in turn to push the puncture needle out to realize the puncture operation; the tail end of the trigger is connected to the thread needle fixing plate, so that the thread needle is driven to move by the trigger, driving the suture thread on the thread needle to realize the threading operation.

3. The disposable fiber ring suture device according to claim 2, characterized in that: The handle shell is provided with a strip hole and a strip groove, the side slider is slidably arranged in the strip groove, and the side button is fixed on the side slider and extends from the strip hole to the outside of the handle shell; raised flexible damping blocks are provided on both sides of the side slider, and limiting grooves are provided on the side walls of the strip groove. The side slider slides in cooperation with the strip groove through the flexible damping block. When the flexible damping block slides into the limiting groove, the side slider is limited. When a force is applied by the side button to deform the flexible damping block and escape from the limiting groove, the side slider resumes the sliding state.

4. The disposable fiber ring suture device according to claim 3, characterized in that: A middle partition is fixedly provided in the handle housing, a slide groove is provided on the middle partition, and the puncture needle fixing plate and the thread needle fixing plate are respectively arranged on both sides of the middle partition, and both are slidably matched with the slide groove of the middle partition; The double gear passes through the middle partition and is rotatably arranged on the middle partition; the side slider is slidably arranged in the slide groove of the middle partition and is located on the same side of the middle partition as the needle fixing plate; the driving rack is slidably arranged on the middle partition and is located on the same side of the middle partition as the puncture needle fixing plate.

5. The disposable fiber ring suture device according to claim 4, characterized in that: The upper and lower parts of the side slider are both provided with flexible damping blocks. The upper part of the side slider is slidably matched with the strip groove, and the lower part is slidably matched with the slide groove of the middle partition. The transmission rack is arranged at the lower part of the side slider.

6. The disposable fiber ring suture device according to claim 2, characterized in that: A transmission groove is provided at the tail end of the trigger, and the thread needle fixing plate is connected to the transmission groove through a pin shaft. When the trigger rotates, the pin shaft slides relatively in the transmission groove, thereby converting the rotational motion of the trigger into the linear motion of the thread needle fixing plate.

7. The disposable fiber ring suture device according to claim 1, characterized in that: The needle tube includes a straight tube and a curved tube, the puncture needle is slidably arranged in the straight tube; the suture needle is slidably arranged in the curved tube; a side hole is arranged on the front end side of the puncture needle; the front end of the curved tube is bent and opposite to the side hole, and when the suture needle is extended, it carries the suture thread through the side hole.

8. 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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