Fibrous ring stitching instrument

Abstract

The utility model provides a 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 is 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 utility model, the convenience of one-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 utility model belongs to the technical field of medical apparatus and instruments, and relates to a fibrous ring suture device. BACKGROUND

[0002] In recent years, with the aggravation of population aging and the change of people's work and life style, the incidence of lumbar disc herniation continues to rise, which brings a great burden to the patient's family and society. Intervertebral disc is located between adjacent vertebral bodies in the spine, which is composed of annulus fibrosus, nucleus pulposus and cartilage endplate, and can increase the range of motion of the spine, bear load and play a role in buffering and protecting the spinal cord. Intervertebral disc degeneration is a very complex disease. It may have certain relationship with factors such as aging, heredity, disease and intervertebral disc rupture, but the relationship between degenerative changes and low back pain is not clear. The annulus fibrosus is an important component in the intervertebral disc, which 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 the 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 protrusion, so it is necessary to repair the defect of the annulus fibrosus when the lumbar disc is prolapsed. Annulus fibrosus suture repair has gradually become a routine step in the surgical treatment of intervertebral disc herniation. Using annulus fibrosus suture device to repair the annulus fibrosus can effectively reduce the recurrence rate.

[0003] At present, the existing annulus fibrosus suture device on the market is mainly mechanical. The mechanical suture device has a relatively simple structure, but it needs a large hand force of the doctor to control during operation, has low operation precision, and is easy to cause uneven suture, loose suture and other problems. In addition, the existing suture device needs to open and close the locking device many times during the suture process to realize the tightening and locking of the suture line. This operation not only increases the operation time, but also increases the operation burden of the doctor, which may lead to operation failure or poor suture effect. Although some improved suture devices solve the problem of complicated operation, there are deficiencies in the man-machine engineering design, it is difficult to operate with one hand, and there is no precise control device, which is not conducive to fine operation.

[0004] Therefore, the existing annulus fibrosus suture device still has room for improvement in operation simplicity, one-hand control, man-machine engineering design and suture effect. In view of these shortcomings, the utility model aims to provide an improved annulus fibrosus suture device, simplify the operation process, optimize the man-machine engineering design, improve the convenience of one-hand operation and the accuracy of suture, so as to realize better annulus fibrosus repair effect. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide an improved annulus fibrosus suture device, simplify the operation process, optimize the man-machine engineering design, improve the convenience of one-hand operation and the accuracy of suture, so as to realize better annulus fibrosus repair effect.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of annulus suture device, including handle shell, suture assembly, transmission assembly, drive assembly;The transmission assembly is located in handle shell, the drive assembly is connected with suture assembly by transmission assembly, the suture assembly includes needle tube and respectively independently slidingly arranged in needle tube puncture needle and needle;The needle tube is fixedly arranged at the front end of handle shell, the puncture needle tail end is equipped with puncture needle fixed plate, and the needle tail end is equipped with needle fixed plate;The puncture needle fixed plate and needle fixed plate are slidably arranged in the handle shell;The drive assembly includes trigger and side button, the trigger is rotatably arranged at the front end of handle shell, and is connected with needle fixed plate;The side button is slidably arranged on the side of handle shell, and slides up and down relative to handle shell, and the side button is connected with puncture needle fixed plate, and the needle fixed plate and puncture needle fixed plate are driven to move by the trigger and side button respectively, to drive needle and puncture needle to move, and realize puncture suture operation.

[0008] Further, the transmission assembly includes side slider, double gear, transmission rack, drive rack;The side slider is slidably arranged in the handle shell, and moves along the up-down direction of handle shell;The side button is arranged on the side slider and extends to the outside of handle shell;The transmission rack is arranged on the side slider, and the drive rack is arranged on the puncture needle fixed plate;The double gear is rotatably arranged in the handle shell, and one end is engaged with the transmission rack, and the other end is engaged with the drive rack;When the user holds handle shell and pushes the side button downward, the side slider slides downward, and the power is transmitted through the transmission rack, double gear and drive rack in sequence, to eject the puncture needle and realize puncture operation;The tail end of the trigger is connected with the needle fixed plate, so that the needle is driven to move by the trigger, to drive the suture thread on the needle, and realize threading operation.

[0009] Further, the handle shell is provided with a strip-shaped hole and a strip-shaped groove, the side slider is slidably arranged in the strip-shaped groove, and the side button is fixedly arranged on the side slider and extends to the outside of handle shell from the strip-shaped hole;The both sides of the side slider are provided with protruding flexible damping blocks, and the side wall of the strip-shaped groove is provided with a limiting groove, the side slider is slidably matched with the strip-shaped groove through the flexible damping blocks, and the side slider is limited when the flexible damping blocks slide into the limiting groove;When the flexible damping blocks are deformed and out of the limiting groove by the action force applied by the side button, the side slider returns to sliding state.

[0010] Further, the handle shell is fixedly provided with a partition plate, the partition plate is provided with a sliding groove, and the puncture needle fixed plate and the needle fixed plate are respectively arranged on the both sides of the partition plate and are slidably matched with the sliding groove of the partition plate;

[0011] The double gear wheel passes through the middle partition plate and is arranged on the middle partition plate to rotate, the side sliding block is arranged in the sliding groove of the middle partition plate and is located on the same side of the middle partition plate with the wire needle fixing plate, and the driving rack is arranged on the middle partition plate and is located on the same side of the middle partition plate with the puncture needle fixing plate.

[0012] Further, the upper part and the lower part of the side sliding block are provided with flexible damping blocks, the upper part of the side sliding block is in sliding fit with the strip-shaped groove, the lower part is in sliding fit with the sliding groove of the middle partition plate, and the driving rack is arranged on the lower part of the side sliding block.

[0013] Further, the tail end of the trigger is provided with a transmission groove, the wire needle fixing plate is connected to the transmission groove through a pin shaft, and when the trigger rotates, the pin shaft relatively slides in the transmission groove, so that the rotary motion of the trigger is converted into the linear motion of the wire needle fixing plate.

[0014] Further, the needle tube comprises a straight pipe and a bent pipe, the puncture needle is arranged in the straight pipe to slide, the wire needle is arranged in the bent pipe to slide, the front end side of the puncture needle is provided with a side hole, the front end of the bent pipe is bent and opposite to the side hole, and the wire needle passes through the side hole when the wire needle is stretched out.

[0015] Further, the handle shell is a two-half combined structure.

[0016] The utility model discloses the beneficial effect lies in:

[0017] 1, the transmission assembly designed in the utility model, through the cooperation of trigger and side button, the linkage control of puncture needle and wire needle can be realized, so as to simplify the suture operation step.

[0018] 2, the transmission mechanism of the side sliding block and the double gear wheel of the utility model ensures that the puncture needle and the wire needle can move accurately.

[0019] 3, the limiting structure (namely the flexible damping block and the limiting groove in the handle shell) of the utility model ensures that the puncture needle can be automatically locked after being stabbed into the fibrous ring and can be unlocked under the relatively large force of the operator again, so that the potential risk caused by the operation failure is avoided.

[0020] The other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following description, and it is in terms of this description that there is to be understood the objects and advantages of the present application. The objects and other advantages of the present application can be realized and attained by means of the instrumentalities and combinations particularly pointed out in the following description. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the objects, technical solutions and advantages of the present application clearer, the preferred embodiments of the present application will be described in detail below with reference to the drawings, in which:

[0022] Figure 1 It is a whole schematic view of the fiber ring suture device in the present application.

[0023] Figure 2 It is an internal structure schematic view of the fiber ring suture device in the present application.

[0024] Figure 3 It is an internal front structure schematic view of the fiber ring suture device in the present application.

[0025] Figure 4 It is an internal back structure schematic view of the fiber ring suture device in the present application.

[0026] Figure 5 It is a side slider and handle shell assembly schematic view in the present application.

[0027] Figure 6 It is a partial schematic view of the handle shell in the present application.

[0028] Figure 7 It is a side key front schematic view in the present application.

[0029] Figure 8 It is a side key back schematic view in the present application.

[0030] Figure 9 It is a tip structure schematic view of the suture assembly in the present application.

[0031] Figure 10 It is a middle partition plate schematic view in the present application.

[0032] Reference signs: 1-handle shell; 2-suture assembly; 3-trigger; 4-side key; 5-side slider; 6-flexible damping block; 7-middle partition plate; 8-double gear; 9-transmission rack; 10-driving rack; 11-bar-shaped hole; 12-bar-shaped slot; 13-limiting slot; 21-needle shell; 22-puncture needle; 23-elliptical tube; 24-thread needle; 25-thread needle fixing plate; 26-puncture needle fixing plate; 31-transmission slot. DETAILED DESCRIPTION

[0033] The other advantages and functions of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification. The present application can also be implemented or applied through other different specific embodiments, and each detail in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] The drawings are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation of the present application. In order to better illustrate the embodiments of the present application, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product. It is understandable for those skilled in the art that some known structures and their descriptions in the drawings can be omitted.

[0035] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0036] Please refer to Figures 1-10The application discloses a kind of fiber ring suture, including handle shell 1, suture assembly 2, transmission assembly, drive assembly;Transmission assembly is located in handle shell 1, drive assembly is connected with suture assembly 2 by transmission assembly, suture assembly 2 includes needle tube and respectively independently slidingly arranged in needle tube puncture needle 22 and thread needle 24;Needle tube is fixedly arranged at the front end of handle shell 1, the tail end of puncture needle 22 is provided with puncture needle fixed plate 26, and the tail end of thread needle 24 is provided with thread needle fixed plate 25;Puncture needle fixed plate 26 and thread needle fixed plate 25 are slidably arranged in handle shell 1;Drive assembly includes trigger 3 and side button 4, trigger 3 is rotatably arranged at the front end of handle shell 1, and is in transmission connection with thread needle fixed plate 25;Side button 4 is slidably arranged on the side of handle shell 1, and slides up and down relative to handle shell 1, and side button 4 is in transmission connection with puncture needle fixed plate 26, thread needle fixed plate 25 and puncture needle fixed plate 26 are driven to move respectively by trigger 3 and side button 4, so as to drive thread needle 24 and puncture needle 22 to move, and realize puncture and suture operation.

[0037] Transmission assembly includes side slider 5, double gear 8, transmission rack 9, drive rack 10;Side slider 5 is slidably arranged in handle shell 1, and moves along the up-and-down direction of handle shell 1;Side button 4 is arranged on side slider 5, and extends to the outside of handle shell 1;Transmission rack 9 is arranged on side slider 5, and drive rack 10 is arranged on puncture needle fixed plate 26;Double gear 8 is rotatably arranged in handle shell 1, and one end is engaged with transmission rack 9, and the other end is engaged with drive rack 10;When the user holds handle shell 1 and pushes side button 4 downward, side slider 5 slides downward, and power is transmitted through transmission rack 9, double gear 8 and drive rack 10 in turn, to eject puncture needle 22 and realize puncture operation;The tail end of trigger 3 is connected with thread needle fixed plate 25, so as to drive thread needle 24 to move by trigger 3, to drive the suture thread on thread needle 24, and realize threading operation.

[0038] Handle shell 1 is provided with a strip-shaped hole 11 and a strip-shaped groove 12, side slider 5 is slidably arranged in the strip-shaped groove 12, and side button 4 is fixedly arranged on side slider 5 and extends to the outside of handle shell 1 through strip-shaped hole 11;The two sides of side slider 5 are provided with protruding flexible damping blocks 6, and the side wall of strip-shaped groove 12 is provided with a limiting groove 13, side slider 5 is slidably matched with strip-shaped groove 12 through flexible damping blocks 6, when flexible damping blocks 6 slide into limiting groove 13, side slider 5 is limited, when flexible damping blocks 6 are deformed and get out of limiting groove 13 by applying force through side button 4, side slider 5 restores sliding state.

[0039] The handle shell 1 is internally fixed with a middle partition plate 7, the middle partition plate 7 is provided with a sliding slot, a puncture needle fixing plate 26 and a wire needle fixing plate 25 are respectively arranged on the two sides of the middle partition plate 7 and are in sliding fit with the sliding slot of the middle partition plate 7; a double gear 8 penetrates through the middle partition plate 7 and is rotatably arranged on the middle partition plate 7; a side sliding block 5 is slidingly arranged in the sliding slot of the middle partition plate 7 and is located on the same side of the middle partition plate 7 as the wire needle fixing plate 25; a driving rack 10 is slidingly 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] The upper part and the lower part of the side sliding block 5 are both provided with flexible damping blocks 6, the upper part of the side sliding block 5 is in sliding fit with the strip-shaped slot 12 and the lower part is in sliding fit with the sliding slot of the middle partition plate 7, and the driving rack 9 is arranged on the lower part of the side sliding block 5.

[0041] The tail end of the trigger 3 is provided with a transmission slot 31, the wire needle fixing plate 25 is connected to the transmission slot 31 through a pin shaft, when the trigger 3 rotates, the pin shaft relatively slides in the transmission slot 31, so that the rotary motion of the trigger 3 is converted into the linear motion of the wire needle fixing plate 25.

[0042] The needle tube includes a straight pipe and a bent pipe 23, the straight pipe and the bent pipe 23 are fixedly arranged on the two sides of the needle shell 21, and the needle shell is fixedly arranged on the handle shell. The puncture needle 22 is slidingly arranged in the straight pipe; the wire needle 24 is slidingly arranged in the bent pipe 23; the front end side of the puncture needle 22 is provided with a side hole; the front end of the bent pipe 23 is bent and opposite to the side hole, and the wire needle 24 extends out and passes through the side hole together with the suture.

[0043] In the embodiment, the handle shell 1 is a two-half combined structure, is divided into upper and lower shells and is connected by buckling or screws.

[0044] The use method of the embodiment is as follows:

[0045] (1) holding the suture device, the bent pipe 23 is stabbed into from one side of the annular fibrous ring incision,

[0046] (2) the side button 4 is pushed down until it is stationary to push the puncture needle 22 to stab into from the other side of the incision;

[0047] (3) the trigger 3 is pulled down until it is stationary to send the suture into the side hole of the puncture needle 22 from the wire needle 24;

[0048] (4) the side button 4 is pushed to make the side button 4 out of the limiting slot 13, so that the puncture needle 22 exits together with the suture;

[0049] (5) the suture device is pulled out, the knot is pushed tight by the knot pusher, the suture is cut, and the suture is completed.

[0050] Finally, it is explained that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A annulus fibrosus suture device, comprising a handle housing, a suture assembly, a transmission assembly, a driving assembly; the transmission assembly is located in the handle housing, the driving assembly is in transmission connection with the suture assembly through the transmission assembly, characterized in that: The suture assembly comprises a needle tube and a puncture needle and a thread needle which are independently slid in the needle tube respectively; the needle tube is fixedly arranged at the front end of the handle shell; the puncture needle tail end is provided with a puncture needle fixing plate; the thread needle tail end is provided with a thread needle fixing plate; the puncture needle fixing plate and the thread needle fixing plate are slidably arranged in the handle shell; the driving assembly comprises a trigger and a side button; the trigger is rotatably arranged at the front end of the handle shell and is in transmission connection 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 in transmission connection with the puncture needle fixing plate; the thread needle fixing plate and the puncture needle fixing plate are driven to move by the trigger and the side button respectively, so as to drive the thread needle and the puncture needle to move, and the puncture and suture operation is realized.

2. The annulus sealer of claim 1, wherein: The transmission assembly comprises 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-down direction 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; the driving rack is arranged on the puncture needle fixing plate; the double gear is rotatably arranged in the handle shell and is in mesh with the transmission rack at one end and in mesh with the driving rack at the other end; when the user holds the handle shell and pushes the side button downward, the side slider slides downward, and the power is transmitted through the transmission rack, the double gear, and the driving rack in turn, so as to eject the puncture needle and realize the puncture operation; the tail end of the trigger is connected with the thread needle fixing plate, so as to drive the thread needle to move by the trigger and drive the suture thread on the thread needle to realize the threading operation.

3. The annular fiber suture according to claim 2, characterized in that: A strip-shaped hole and a strip-shaped groove are formed in the handle shell; the side slider is slidably arranged in the strip-shaped groove; the side button is fixedly arranged on the side slider and extends out of the handle shell through the strip-shaped hole; the two sides of the side slider are provided with protruding flexible damping blocks; limit grooves are arranged on the side walls of the strip-shaped groove; the side slider is in sliding cooperation with the strip-shaped groove through the flexible damping blocks; when the flexible damping blocks slide into the limit grooves, the side slider is limited; when the flexible damping blocks are deformed out of the limit grooves by the action force applied through the side button, the side slider returns to the sliding state.

4. The annular fiber suture according to claim 3, characterized in that: A partition plate is fixedly arranged in the handle shell; a sliding groove is arranged on the partition plate; the puncture needle fixing plate and the thread needle fixing plate are arranged on the two sides of the partition plate respectively and are in sliding cooperation with the sliding groove of the partition plate; The double gear passes through the partition plate and is rotatably arranged on the partition plate; the side slider is slidably arranged in the sliding groove of the partition plate and is located on the same side of the partition plate as the thread needle fixing plate; the driving rack is slidably arranged on the partition plate and is located on the same side of the partition plate as the puncture needle fixing plate.

5. The annular fiber suture of claim 4, wherein: The upper part and the lower part of the side slider are provided with flexible damping blocks; the upper part of the side slider is in sliding cooperation with the strip-shaped groove, and the lower part is in sliding cooperation with the sliding groove of the partition plate; the transmission rack is arranged on the lower part of the side slider.

6. The annular fiber suture of claim 2, wherein: The tail end of the trigger is provided with a transmission groove; the thread needle fixing plate is connected with the transmission groove through a pin shaft; when the trigger rotates, the pin shaft slides in the transmission groove relative, so as to convert the rotary motion of the trigger into the linear motion of the thread needle fixing plate.

7. The annular fiber suture according to claim 1, characterized in that: The needle tube comprises a straight tube and a bent tube, the puncture needle is slidably arranged in the straight tube, the wire needle is slidably arranged in the bent tube, the front end side of the puncture needle is provided with a side hole, the front end of the bent tube is bent and opposite to the side hole, and the wire needle is stretched out to carry the suture through the side hole.

8. The annular fiber suture of claim 1, wherein: The handle shell is a two-half combined structure.

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