Near end plate fiber ring stitching instrument

Abstract

The invention discloses a near end plate fiber ring stitching instrument, and belongs to the technical field of medical instruments. The device comprises a shell, a puncture needle component, a push and guide needle component, a bone anchor component, a slide way rotating shaft component and a reversing rotating handle component are arranged in the shell, and the reversing rotating handle component partially penetrates through the shell and is exposed; the puncture needle component and the push and guide needle component are positioned on the same straight line, are restrained on a slideway of the slideway rotating shaft component, and have degrees of freedom of approaching and leaving from each other; a sliding gear is arranged on the reversing rotating handle part, a gear A is arranged on the bone anchor part, a gear B is arranged at the tail end of the slideway rotating shaft part, and the sliding gear can be selectively matched with the gear A or the gear B. The umbrella-shaped structure made of rubber and located at the head of the suture can be pressed in the fiber ring after being opened, and the problem that a transverse supporting structure is prone to disengagement is solved; by means of the titanium alloy bone anchor with the tantalum coating, the problem that the damaged near-end-plate area of the fiber ring is difficult to suture and repair is solved, and meanwhile the fusion repair process is accelerated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical devices, and particularly relates to a near-end-plate annulus fibrosus suturing device. BACKGROUND

[0002] The annulus fibrosus suturing device is applied to a situation where the annulus fibrosus is ruptured after a lumbar disc herniation surgery, and is used for suturing the ruptured annulus fibrosus.

[0003] The surgical suture is used for suturing the annulus fibrosus wound, and is punched into a cross support on one side of the wound to fix the suture A with a coil, and the other end suture B is punched into the cross support through the coil and the cross support, and the suture A is automatically knotted by being tightened, so that the wound is sutured and fixed.

[0004] The hand-held device is used for holding the annulus fibrosus suturing device, and the surgical suture, the trigger component and the guide needle are located in the hand-held device, and the wound is sutured by holding the hand-held device and finding a suitable angle.

[0005] The trigger component is used for guiding the suture, and the surgical suture fixed in the hand-held device is stretched forward by cocking the trigger, and the suture cross support is punched into the fixed position by cocking the trigger for multiple times. The guide needle is used for guiding the suture, and the needle head pierces the skin around the annulus fibrosus wound by cocking the trigger, and the suture cross support located in the needle head is left in the annulus fibrosus after the trigger is reset, and the cross support is punched into the position after cocking the trigger for multiple times, and then the guide needle is pulled out and the suture is knotted.

[0006] However, the existing suture uses a cross support structure, the stress area is small, and improper operation may cause the annulus fibrosus to bear too high pressure, and cause secondary damage to the annulus fibrosus. Only the suture of the wound located on the surface of the annulus fibrosus can be solved, and the situation of the annulus fibrosus near the end-plate part cannot be solved. SUMMARY

[0007] Therefore, the near-end-plate annulus fibrosus suturing device is provided, the umbrella-shaped structure of the rubber material located at the head of the suture can be pressed in the annulus fibrosus after being opened, the problem that the cross support structure is easy to be pulled out is solved, the titanium alloy bone anchor with the tantalum coating solves the problem that the annulus fibrosus near the end-plate area is difficult to be sutured and repaired, and the fusion and repair process is accelerated.

[0008] In order to achieve the above purpose, the technical scheme adopted by the application is as follows:

[0009] A near-end-plate annulus fibrosus suturing device, comprising a shell, a puncture needle component 1, a guide needle component 2, a bone anchor component 4, a slide shaft component 5 and a reversing handle component 6 are arranged in the shell, and the reversing handle component 6 partially penetrates through the shell and is exposed;

[0010] The puncture needle component 1 and the push needle component 2 are located on the same line and are respectively constrained on the corresponding slide of the slide shaft component 5 and have the tendency of approaching or moving away along the corresponding slide; the reversing handle component 6 is provided with a sliding gear 61, the bone anchor component 4 is provided with a gear A45, and the end of the slide shaft component 5 is provided with a gear B54, and the sliding gear 61 can selectively cooperate with the gear A or the gear B.

[0011] Further, the puncture needle component 1 comprises a puncture needle tube 12 and a puncture needle sliding block 13; the puncture needle tube 12 is fixedly arranged on one side of the puncture needle sliding block 13, the puncture needle sliding block 13 is provided with a spring top bead A11, the end of the spring top bead A11 is constrained in the slide A52 of the slide shaft component 5 and has the freedom of moving along the slide A52.

[0012] Further, the push needle component 2 comprises a push needle 22 and a push needle sliding block 23; the push needle 22 is installed on one side of the push needle sliding block 23, the push needle sliding block 23 is provided with a spring top bead B11, the end of the spring top bead B11 is constrained in the slide B55 of the slide shaft component 5 and has the freedom of moving along the slide B55.

[0013] Further, the push needle sliding block 23 is provided with a pin shaft 24, the pin shaft 24 is constrained in the clamping groove A14 of the puncture needle sliding block 13 and has the freedom of sliding along the clamping groove A14; the push needle 22 is located in the puncture needle tube 12 and between the push needle sliding block 23 and the puncture needle sliding block 13 on the same side and is provided with a spring B25.

[0014] Further, the slide shaft component 5 comprises a shaft 51 as the main body, one end of the shaft 51 is provided with a gear B54, and the shaft 51 is provided with a slide A52 and a slide B55; the puncture needle component 1 cooperates with the slide A, and the push needle component 2 cooperates with the slide B.

[0015] Further, the reversing handle component 6 comprises a rotating shaft, a sliding gear 61 and a handle 65; the rotating shaft and the sliding gear are located in the housing, and the sliding gear 61 is coaxially installed with the rotating shaft; the handle is located outside the housing and one end of the handle is connected with the rotating shaft to drive the rotating shaft to rotate.

[0016] Further, the reversing handle component 6 further comprises a reversing trigger; the reversing trigger cooperates with the bearing of the housing, the inner end of the reversing trigger is provided with a clamping groove which is hinged to the reversing trigger; the middle position of the sliding gear 61 is provided with an annular beam, the clamping groove is clamped on the annular beam and can move along the annular beam.

[0017] Further, it further comprises a umbrella head suture 3, the umbrella head suture 3 is located in the puncture needle tube 12 of the puncture needle component, one end of the umbrella head suture 3 is exposed from the puncture needle tube and is provided with an umbrella head 31

[0018] Further, the bone anchor component 4 comprises a tantalum-coated bone anchor 41, a connecting rod, a connecting shaft anchor needle 43, a spline shaft 44 and a gear A 45 connected in sequence; the connecting rod is provided with a fracture 42, and when the tantalum-coated bone anchor 41 is rotated into position, the fracture is broken to separate the tantalum-coated bone anchor 41 from the connecting shaft anchor needle 43.

[0019] The beneficial effects of the above optimization technical scheme are:

[0020] 1. High structural integration and convenient operation: the puncture needle component, the push and guide needle component, the bone anchor component, the slide shaft component and the reversing handle component are integrated in the shell, and the multi-component linkage is realized through the reversing handle component, so that the entire suture device is compact and easy to operate, and the doctor can accurately operate in a small space.

[0021] 2. Bidirectional transmission and function switching can be realized: the sliding gear on the reversing handle component can selectively engage with the gear A of the bone anchor component or the gear B of the slide shaft component, improving the operation efficiency and reducing the number of instrument changes.

[0022] 3. Puncture and push and guide action coordinated control: the puncture needle component and the push and guide needle component are constrained on the same slide, and synchronous or alternating motion can be realized through the slide shaft component, ensuring the continuity and accuracy of the puncture and lead process, and reducing the risk of tissue damage.

[0023] 4. Push and guide needle and puncture needle linkage design: the push and guide needle slide block is matched with the puncture needle slide block through a pin shaft and a clamping groove, and a spring is arranged therebetween, so that the push and guide needle can automatically or semi-automatically complete the wire pushing action after puncture, improving the operation fluency and reliability.

[0024] 5. Bone anchor implantation and automatic separation mechanism: the bone anchor component is provided with a fracture structure, and when the bone anchor is rotated into position, the automatic separation of the bone anchor from the connecting shaft anchor needle can be realized by continuing to apply torque, avoiding excessive implantation or difficulty in removal, and improving the safety of the operation.

[0025] 6. Umbrella head suture design facilitates anchoring and suturing: the suture structure with an umbrella head is easy to pass through the tissue and expand at the target position, enhancing the anchoring effect, and is suitable for the suturing needs of special parts such as near-endplate annulus fibrosus.

[0026] 7. Humanized operation interface: the reversing handle part is exposed, and is designed in cooperation with the reversing trigger, which facilitates the doctor to quickly switch the operation mode during the operation, improves the operation response speed and operation experience. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic view of the near-endplate annulus fibrosus suture device (before movement) of the embodiment of the present application.

[0028] Figure 2 is a schematic diagram of the endplate fiber ring suture device (post-movement) of an embodiment of the present application.

[0029] Figure 3 is a schematic diagram of the piercing needle component structure of an embodiment of the present application.

[0030] Figure 4 is a schematic diagram of the push-pull needle component structure of an embodiment of the present application.

[0031] Figure 5 is a schematic diagram of the bone anchor component structure of an embodiment of the present application.

[0032] Figure 6 is a schematic diagram of the slide shaft component structure of an embodiment of the present application.

[0033] Figure 7 is a schematic diagram of the reversing handle component structure of an embodiment of the present application.

[0034] Figure 8 is a perspective view of Figure 7 .

[0035] Figure 9 is a schematic diagram of the slide gear structure in the reversing handle component.

[0036] Figure 10 is a schematic diagram of the slide layout of the slide shaft component.

[0037] In the figure: 1, piercing needle component; 11, spring top bead A; 12, hollow needle tube; 13, piercing needle slider; 14, clamping groove A; 15, clamping groove B; 2, push-pull needle component; 21, spring top bead B; 22, push needle; 23, push-pull needle slider; 24, pin shaft; 25, spring; 3, umbrella head suture; 31, umbrella head; 32, umbrella head (open); 4, bone anchor component; 41, tantalum-coated bone anchor; 42, breaking point; 43, connecting shaft anchor needle; 44, spline shaft; 45, gear A; 46, bearing A; 5, slide shaft component; 51, shaft; 52, slide A; 53, slide B; 54, gear B; 55, bearing B; 56, bearing C; 57, axial blocking ring A; 58, axial blocking ring B; 6, reversing handle component; 61, slide gear; 62, reversing trigger; 63, bearing D; 64, bearing E; 65, handle; 7, outer shell. DETAILED DESCRIPTION

[0038] The present application will be further described in detail below with reference to the accompanying drawings.

[0039] Reference Figures 1 to 9The near-end plate annulus fibrosus suture device provided by the embodiment specifically comprises a puncture needle component 1, which comprises spring top beads A11, a hollow needle tube 12, a puncture needle slider 13, a clamping groove A14, and a clamping groove B15. A push and guide needle component 2, which comprises spring top beads B21, a push needle 22, a push and guide needle slider 23, a pin shaft 24, and a spring 25. An umbrella head suture 3, which comprises an umbrella head 31 and an umbrella head (open) 32. A bone anchor component 4, which comprises a tantalum-coated bone anchor 41, a fracture opening 42, a connecting shaft anchor needle 43, a spline shaft 44, a gear A 45, and a bearing A 46. A slide shaft component 5, which comprises a slide shaft 51, a slide A 52, a slide B 53, a gear B 54, a bearing B 55, and a bearing C 56. A reversing handle component 6, which comprises a sliding gear 61, a reversing trigger 62, a bearing D 63, a bearing E 64, and a handle 65. An outer shell 7. The specific description is as follows:

[0040] The puncture needle component 1 is used to cooperate with the push and guide needle component 2 to realize the function of threading the suture.

[0041] The spring top beads A11 are used to cooperate with the slide A 52 to push the puncture needle component 1 forward in the first stage.

[0042] The hollow needle tube 12 is used to accommodate the umbrella head suture 3 and pierce the annulus fibrosus tissue during the advancement of the puncture needle component 1.

[0043] The puncture needle slider 13 is used to control the depth of the hollow needle tube 12 and limit the position of the push and guide needle slider 23 in the third stage.

[0044] The clamping groove A14 is used to cooperate with the pin shaft 24 to limit the movement of the push and guide needle component 2 while providing power for the push and guide needle component 2 in the first stage.

[0045] The clamping groove B15 is used to limit the position of the puncture needle component 1.

[0046] The push and guide needle component 2 is used to cooperate with the puncture needle component 1 to realize the function of threading the suture.

[0047] The spring top beads B21 are used to cooperate with the slide B 53 to push the push and guide needle component 2 forward in the second stage.

[0048] The push needle 22 is used to push the umbrella head 31 in the second stage to move the umbrella head suture 3 as a whole forward until the umbrella head 31 is separated from the inside of the hollow needle tube 12 and opens into the umbrella head (open) 32 form.

[0049] The push and guide needle slider 23 is used to cooperate with the puncture needle slider 13 to limit the position of the push needle 22 in the second stage.

[0050] Pin shaft 24, which cooperates with the clamping groove 14, provides power for the push and pull needle component in stage one, and limits the movement of the push and pull needle component 2 in stage two.

[0051] Spring B25, which provides a rebound power after stage four to reset the push and pull needle component 2, and promotes it to separate from the umbrella head 31.

[0052] Umbrella head suture 3, which replaces the traditional cross support structure, provides stronger clamping force while dispersing the pressure around the needle hole, avoiding the risk of suture dislocation.

[0053] Umbrella head 31, a foldable structure made of rubber material, opens into an umbrella head (open) 32 form after the second stage is separated, clamps inside the annulus fibrosus during the fourth stage of pulling out the suture device, and evenly disperses the pressure around the needle hole, facilitating the elongation of the umbrella head suture 3.

[0054] Bone anchor component 4, which cooperates with the handle component 6, converts horizontal rotation force into axial rotation force, and promotes the tantalum-coated bone anchor 41 to rotate into the drill hole position.

[0055] Tantalum-coated bone anchor 41, a titanium metal wire anchor with a metal tantalum coating on the surface. Its function is to rotate and anchor inside the spinal drill hole, and after the suture device is pulled out and the suture is elongated and cut in the fourth stage, it is knotted with the umbrella head suture through the internal suture, realizing the function of near-endplate annulus fibrosus suture.

[0056] Fracture 42, a slot structure located at the junction of the tail of the tantalum-coated bone anchor 41 and the continuous shaft anchor needle, which breaks when the tantalum-coated bone anchor 41 rotates into place and continues to bear axial rotation force, promoting the tantalum-coated bone anchor 41 to separate from the continuous shaft anchor needle 43.

[0057] Continuous shaft anchor needle 43, which connects the tantalum-coated bone anchor 41 and the spline shaft 44, is fixed on the spline shaft 44 by a jack screw.

[0058] Spline shaft 44, which cooperates with the jack screw to connect the continuous shaft anchor needle 43 through the top slot, cooperates with the gear A45 through the tail spline, and cooperates with the bearing A46 through the end, realizes the axial rotation of the bone anchor assembly 4 as a whole.

[0059] Gear A45, which cooperates with the spline shaft 44 and the sliding gear 61, drives the spline shaft 44 to rotate.

[0060] Bearing A46, which cooperates with the buckle on the shell 7 to complete the fixation of the spline shaft 44 and realize its rotation function.

[0061] Slide shaft component 5, which provides power for the forward movement of the puncture needle component 1 and the push and pull needle component 2 through the slide structure.

[0062] Rotating shaft 51, function is to rotate with the sliding gear 61 under the action of gear B54.

[0063] Slide A 52, function is as a spring top bead A11 movement path;

[0064] Slide B 55, function is as a spring top bead B21 movement path; slide A and slide B specific structure reference Figure 10 , wherein the slide A is two-section structure, two-section groove forms acute angle included angle; wherein the slide B is three-section structure, including inclined section and two straight sections; straight section parallel to the rotating shaft, and respectively connected at both ends of the inclined section, wherein the straight section near the slide A is opposite to the acute angle inside of the slide A.

[0065] Gear B 54, function is to cooperate with the sliding gear 61 to drive the rotating shaft 51 to rotate;

[0066] Bearing B 55, bearing C 56, function is to support the rotating shaft 51 to rotate;

[0067] Axial stop ring A 57, axial stop ring B 58, function is to limit the position of bearing B 55, bearing C 56;

[0068] Reversing handle component 6, function is to cooperate with the bone anchor assembly 4 and the slide rotating shaft component 5, and to provide power for its rotation.

[0069] Sliding gear 61, function is to cooperate with the gear A 45 and the gear B 54, and to provide power for the spline rotating shaft 44 and the rotating shaft 51 to rotate.

[0070] Reversing trigger 62, function is to cooperate with the hole on the surface of the shell 7 and the clamping block in the center of the sliding gear 61, and to control the sliding of the sliding gear 61 by moving left and right.

[0071] Bearing D 63, bearing E 64, function is to support the rotating shaft of the reversing handle component 6 to rotate.

[0072] Handle 65, function is to provide power for the rotating shaft of the reversing handle component 6 to rotate.

[0073] Shell 7, function is to accommodate the puncture needle component 1, the push needle component 2, the bone anchor component 4, the slide rotating shaft component 5 and the reversing handle component 6, and to realize the fixation thereof.

[0074] The working principle of the embodiment is that the intervertebral disc mirror is fixed in place first, the near-end plate annulus fibrosus tear area is positioned, the drill is used to punch a hole on the surface of the vertebral body corresponding to the tear part; the near-end plate annulus fibrosus suture device is inserted from the working sleeve of the intervertebral disc mirror, the tantalum coating bone anchor 41 at the tip of the bone anchor component 4 is aligned with the drilled hole on the surface of the vertebral body, and the hollow needle tube 12 at the front end of the puncture needle component 1 is aligned with the annulus fibrosus, and the tear part is located between the two parts.

[0075] Work step one: rotate the handle 65, through the rotating shaft to drive the sliding gear 61 rotation, through the sliding gear 61 drive gear A45, and then drive the spline shaft 44 and bone anchor parts 4 along the axial rotation, while pushing the shell 7, the tantalum coating bone anchor 41 into the drill hole;

[0076] Work step two: after the completion of the annulus fibrosus suture fixator by the tantalum coating bone anchor 41, pull the reversing trigger 62, the reversing trigger 62 controls the sliding gear 61 along the rotating shaft, gear A45 and sliding gear 61 disengaged, gear B54 and sliding gear 61 meshing;

[0077] Work step three stage one: rotate the handle 65, through the rotating shaft to drive the sliding gear 61 rotation, through the sliding gear 61 drive gear B54 rotation, gear B54 rotation drive shaft 51 rotation, spring top ball A drive puncture needle slider 13 along the slot A14 sliding, puncture needle parts 1 to the annulus fibrosus movement, push needle parts 2 in the slot A14 and the traction of the pin shaft 24 follow puncture needle parts 1 movement, push needle 21 push umbrella head 31 forward end of umbrella suture 3 forward movement;

[0078] Work step three stage two: in the process of puncture needle parts 1 forward movement to break the annulus fibrosus, spring top ball B to the position after falling into the slide B53 inside, because the slide B53 is greater than the slope of the slide A52, push needle parts 2 in the spring top ball B21 under the action of the forward movement at a faster speed relative to the puncture needle parts 1, while the spring 25 is compressed;

[0079] Work step three stage three: hollow needle tube 12 puncture annulus fibrosus tissue, puncture needle slider 13 in the slot B15 under the action of the shell 7 limit, at this time the umbrella head 31 disengaged hollow needle tube 11 after the opening in the annulus fibrosus as umbrella head (open) 32 form;

[0080] Work step three stage four: spring top ball A11 control puncture needle parts 1 continue to slide along the slide A52, hollow needle tube 12 gradually out of the annulus fibrosus, spring top ball B21 disengaged slide B53 end, push needle parts 2 in the spring 25 under the action of the rebound, umbrella head 31 in the umbrella head (open) 32 form under the annulus fibrosus;

[0081] Work step four: confirm the umbrella head 31 and tantalum coating bone anchor 41 to the position and firm after pulling the reversing trigger 62, the reversing trigger 62 controls the sliding gear 61 along the rotating shaft, gear B54 and sliding gear 61 disengaged, gear A45 and sliding gear 61 meshing;

[0082] Work step five: rotate the handle 65, through the rotating shaft to drive the sliding gear 61 rotation, through the sliding gear 61 drive gear A45, push the shaft anchor needle 43 continue to apply the rotating force to the tantalum coating bone anchor 41, make the tantalum coating bone anchor 41 and the shaft anchor needle 43 between the fracture 42 fracture, the tantalum coating bone anchor 41 from the suture device;

[0083] Work step six: pull out the fiber ring suture device, the umbrella head 31 and the suture of the tail end of the tantalum coating bone anchor 41 are pulled out along the wire shaft; after the fiber ring suture device is separated from the human body, the intervertebral disc mirror working sleeve, the suture of the umbrella head 31 and the tail end of the tantalum coating bone anchor 41 is cut, two sutures are repeatedly knotted and pushed into the knot pusher, and the near endplate annulus fibrosus suture is completed.

Claims

1. A near-endplate fiber ring suture device, comprising a housing, characterized in that, The outer shell contains a puncture needle component (1), a push needle component (2), a bone anchor component (4), a slide shaft component (5), and a reversing handle component (6), wherein the reversing handle component (6) partially passes through the outer shell and is exposed. The puncture needle component (1) and the push needle component (2) are located on the same straight line and are respectively constrained on the corresponding slide of the slide shaft component (5). They slide along the corresponding slide and tend to move closer or further apart. The reversing handle component (6) is provided with a sliding gear (61), the bone anchor component (4) is provided with a gear A (45), and the end of the slide shaft component (5) is provided with a gear B (54). The sliding gear (61) can be selected to engage with gear A or gear B.

2. The near-endplate fiber ring suture device according to claim 1, characterized in that, The puncture needle component (1) includes a puncture needle tube (12) and a puncture needle slider (13); the puncture needle tube (12) is fixed on one side of the puncture needle slider (13), and the puncture needle slider (13) is provided with a spring ball A (11). The end of the spring ball A (11) is constrained in the slide A (52) of the slide shaft component (5) and has the freedom to move along the slide A (52).

3. The near-endplate fiber ring suture device according to claim 1, characterized in that, The push pin component (2) includes a push pin (22) and a push pin slider (23); the push pin (22) is installed on one side of the push pin slider (23), and the push pin slider (23) is provided with a spring top ball B (11). The end of the spring top ball B (11) is constrained by the slide rail B (55) of the sliding shaft component (5) and has the freedom to move along the slide rail B (55).

4. The near-endplate fiber ring suture device according to claim 3, characterized in that, The push needle slider (23) is provided with a pin (24), which is constrained in the groove A (14) of the puncture needle slider (13) and has the freedom to slide along the groove A (14); the push needle (22) is located inside the puncture needle tube (12), and there is a spring B (25) between the push needle slider (23) and the puncture needle slider (13) on the same side.

5. A near-endplate fiber ring suture device according to claim 1, characterized in that, The sliding shaft component (5) includes a shaft (51) as the main body, one end of which is provided with a gear B (54). The shaft is provided with a slide A (52) and a slide B (55). The puncture needle component (1) cooperates with the slide A, and the push needle component (2) cooperates with the slide B.

6. The near-endplate fiber ring suture device according to claim 1, characterized in that, The reversing handle component (6) includes a rotating shaft, a sliding gear (61) and a handle (65); the rotating shaft and the sliding gear are both located inside the housing, and the sliding gear (61) is coaxially mounted with the rotating shaft; the handle is located outside the housing, and one end of it is connected to the rotating shaft to drive the rotating shaft to rotate.

7. A near-endplate fiber ring suture device according to claim 6, characterized in that, The reversing handle component (6) also includes a reversing trigger; the reversing trigger is engaged with the housing bearing, and its inner end is provided with a slot that is hinged to it; a ring beam is provided at the middle position of the sliding gear (61), and the slot is engaged on the ring beam and can move along the ring beam.

8. A near-endplate fiber ring suture device according to claim 1, characterized in that, It also includes an umbrella head seam (3), which is located in the puncture needle tube (12) of the puncture needle component, with one end protruding from the puncture needle tube and provided with an umbrella-shaped head (31).

9. A near-endplate fiber ring suture device according to claim 1, characterized in that, The bone anchor component (4) includes a tantalum-coated bone anchor (41), a connecting rod, a connecting shaft anchor pin (43), a spline shaft (44), and a gear A (45) connected in sequence. The connecting rod is provided with a fracture opening (42). When the tantalum-coated bone anchor (41) is rotated into position, it will continue to be subjected to axial rotational force and break, causing the tantalum-coated bone anchor (41) to separate from the connecting shaft anchor pin (43).

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