Fibrous ring stitching instrument
By designing a fiber ring suture device with a U-shaped hook and a flexible top rod, the suture end is hooked out on the inside and knotted under endoscopy, solving the problems of false healing and complicated operation in the existing technology, and achieving the effect of simplifying operation and reducing false healing.
Patent Information
- Application Number
- CN202511477624.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2026-02-10
AI Technical Summary
Existing annulus fibrosus suture instruments are prone to false healing during endoscopic suturing, and require prior retraction of nerves and dural sacs, making the procedure complex.
A fiber ring suture device was designed, employing a U-shaped hook and a flexible top rod structure. The suture end is hooked out from the inside and knotted under endoscopy, simplifying the operation and avoiding false healing.
It reduces the chance of pseudo-healing of the annulus fibrosus, simplifies the procedure, and avoids premature traction on the nerves and dural sac.
Smart Images
Figure CN121489565A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical devices, and particularly relates to a fibrous ring suture device. BACKGROUND
[0002] With the development of endoscopic spine surgery and the increasing demand for health, the demand for removing protruding nucleus pulposus through endoscopic spine surgery and suturing and repairing intervertebral disc under the endoscope has also greatly increased. The mainstream device for suturing the fibrous ring under the endoscope at present is to pass a wire with a crossbar into the intervertebral disc through a puncture needle, and make the crossbar clamped in the inner side of the fibrous ring, while the other end of the wire is outside the fibrous ring. By knotting and tightening the wire located on both sides of the fibrous ring break, the fibrous ring break can be closed to make it scar healing. However, this suture method is prone to false healing, that is, the break on the outer side of the fibrous ring is closed by the wire, but the break on the inner side of the fibrous ring appears to be open due to the pulling of the wire. In addition, puncturing the fibrous ring break from the outside needs to pull away the nerve and dural sac in advance to make space for the puncture needle, while the design of the present application hooks out from the inside to the outside of the fibrous ring, which only needs to have enough space at the position where the hook passes out. SUMMARY
[0003] The present application aims to overcome the shortcomings of the prior art, adapt to the actual needs, and provide a fibrous ring suture device to solve the technical problems in the background art.
[0004] In order to achieve the purpose of the present application, the technical scheme adopted by the present application is as follows: The present application discloses a fibrous ring suture device, which comprises a hand-held part, a rod body coaxially connected with the hand-held part, and a U-shaped hook body connected at the distal end of the rod body. A continuous U-shaped groove is formed on the back side wall of the hand-held part, the rod body and the U-shaped hook body. The U-shaped groove is continuous through the rod body and the U-shaped hook body from the proximal end of the hand-held part, and penetrates the U-shaped hook body at the end of the U-shaped hook body. The U-shaped groove forms a U-shaped opening at the end of the U-shaped hook body. A through hole is arranged at the end of the U-shaped hook body. A channel is arranged in the hand-held part, the rod body and the U-shaped hook body, and is continuous through the rod body and the U-shaped hook body from the proximal end of the hand-held part, and penetrates the through hole at the end of the U-shaped hook body. A flexible top rod is arranged in the channel. The proximal end of the flexible top rod penetrates the hand-held part, and the distal end of the flexible top rod is located in the channel in the U-shaped hook body. By pressing the proximal end of the flexible top rod, the distal end of the flexible top rod can be pushed out of the through hole and the knot ball end of the wire hung in the U-shaped opening can be pushed out, or the anchor rod connected at the end of the wire in the through hole can be pushed out. The wire is located in the U-shaped groove and is placed outside the hand-held part by the continuous U-shaped groove of the U-shaped hook body, the rod body and the hand-held part.
[0005] The proximal end of the handheld part is provided with a pressing button which is installed in the mounting hole at the end of the handheld part and can move axially, and the distal end of the pressing button is connected with the proximal end of the flexible top rod; a spring is arranged between the pressing button and the handheld part, and the spring applies a pulling force to the pressing button and the flexible top rod in the proximal end direction to make the distal end of the flexible top rod located in the channel in the U-shaped hook body.
[0006] A guide body is arranged on the side wall of the pressing button and located in the guide groove on the side wall of the handheld part.
[0007] The proximal end of the handheld part is provided with a threaded rotating rod which passes through the U-shaped slot laterally, the distal end of the wire is fixed with the U-shaped hook body and passes through the U-shaped slot, and after being pulled tight, the threaded rotating rod is tightened to press and fix the wire.
[0008] The perforation is located inside the U-shaped slot.
[0009] The end of the U-shaped hook body is pointed.
[0010] The beneficial effects of the present application are that: The present application pushes out the wire with the buckle at the tip of the U-shaped hook body, then exits the hook, and in the same way, hooks out the other end of the same wire from the other side of the annular fibrosis break, pulls the two ends of the wire, and performs knotting and suture of the annular fibrosis under the endoscope by means of the knot pusher. The method is the same as the conventional surgical suture technology, is simple to operate, and avoids the drawbacks of the current mainstream annular fibrosis suture instrument. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a schematic structural diagram of the whole structure of the annular fibrosis suture instrument of the present application; Figure 2 It is a schematic structural diagram of the whole structure of the annular fibrosis suture instrument of the present application; Figure 1 It is a schematic structural diagram of the whole structure of the annular fibrosis suture instrument of the present application; Figure 3 It is a schematic structural diagram of the whole structure of the annular fibrosis suture instrument of the present application; Figure 4 It is a schematic structural diagram of the whole structure of the annular fibrosis suture instrument of the present application; Figure 5 It is a schematic structural diagram of the whole structure of the annular fibrosis suture instrument of the present application; Figure 6 It is a schematic structural diagram of the whole structure of the annular fibrosis suture instrument of the present application; Figure 7 It is a schematic structural diagram of the whole structure of the annular fibrosis suture instrument of the present application; Figure 8 It is a schematic structural diagram of the whole structure of the annular fibrosis suture instrument of the present application; Figure 9 Fig. 4 is a perspective view of the U-shaped hook body and the knot ball end of the thread hung on the U-shaped hook body in the fiber ring suture device of the present application; Figure 10 Fig. 5 is a perspective view of the hole and the anchor rod located in the hole in the fiber ring suture device of the present application. DETAILED DESCRIPTION
[0012] The present application is further illustrated below in conjunction with the accompanying drawings and examples: Example 1: a fiber ring suture device, see Figures 1 to 10 .
[0013] It comprises a hand-held part 1, a rod body 2 coaxially connected with the hand-held part 1, and a U-shaped hook body 3 connected at the distal end of the rod body 2. The end of the U-shaped hook body is pointed. In this embodiment, a continuous U-shaped groove 11 is formed on the back side wall of the hand-held part 1, the rod body 2, and the U-shaped hook body 3. The U-shaped groove 11 continuously penetrates the rod body 2 and the U-shaped hook body 3 from the proximal end of the hand-held part 1 and penetrates the end of the U-shaped hook body 3. The U-shaped groove 11 forms a U-shaped opening 23 at the end 21 of the U-shaped hook body. The suture thread 5 can be hung on the U-shaped opening 23. The thread 5 is located in the U-shaped groove 11 and is placed outside the hand-held part 1 by the continuous U-shaped groove 11 of the U-shaped hook body 3, the rod body 2, and the hand-held part 1.
[0014] Further, the end 21 of the U-shaped hook body is provided with a hole 22 located inside the U-shaped groove 11. A channel is also provided, which is located in the hand-held part 1, the rod body 2, and the U-shaped hook body 3 and continuously penetrates the rod body 2 and the U-shaped hook body 3 from the proximal end of the hand-held part 1 and penetrates the hole 22 at the end of the U-shaped hook body 3. Meanwhile, a flexible ejector rod 43 is provided in the channel. The proximal end of the flexible ejector rod 43 penetrates the hand-held part 1, and the distal end of the flexible ejector rod 43 is located in the channel in the U-shaped hook body 3.
[0015] Further, the proximal end of the hand-held part 1 is provided with a pressing button 4, which is installed in the mounting hole at the end of the hand-held part 1 and can move axially. A guide body 42 is provided on the side wall of the pressing button 4, which is located in the guide groove on the side wall of the hand-held part. The distal end of the pressing button 4 is connected with the proximal end of the flexible ejector rod 43. A spring 41 is provided between the pressing button 4 and the hand-held part 1, which exerts a proximal pulling force on the pressing button 4 and the flexible ejector rod 43 to make the distal end of the flexible ejector rod 43 located in the channel in the U-shaped hook body 3.
[0016] Further, the proximal end of the hand-held part is provided with a threaded rotating rod laterally penetrating the U-shaped groove. The distal end of the thread is fixed with a U-shaped hook body and penetrates the U-shaped groove. After being appropriately tensioned, the threaded rotating rod is tightened to press and fix the thread at this position.
[0017] The fiber ring suture device in use, one end of the suture is knotted and forms a ball-shaped knot ball end 12 hanging in the U-shaped opening 23 (as shown) Figure 9 The line 5 is located in the U-shaped groove 11 and passes through the continuous U-shaped groove 11 of the U-shaped hook body 3, the rod body 2 and the hand-held part 1, and the threaded rotating rod 51 passes through the U-shaped groove 11 from the side. After the line 5 is appropriately tightened, the threaded rotating rod is tightened to press and fix the line 5 on the inner wall of the U-shaped groove 11.
[0018] Then the U-shaped hook body 3 is inserted into the intervertebral disc from the inside of the annular break, and then is hooked from the inside of the annular ring to the outside of the annular ring. Then the threaded rotating rod is loosened, the flexible top rod is pressed to pass through the perforation by pressing the pressing button 4 at the proximal end, and the anchor rod 12 in the perforation 22 is pushed out. Then the U-shaped hook body 3 is withdrawn, and the other end of the same line is hooked from the inside to the outside of the annular break at the other side. The two ends of the hooked line are tightened, and then the knot pushing device is used to knot and suture the annular ring under the endoscope. The method is the same as the conventional surgical suture technology, but the fiber ring suture device in use is simple to operate, and the probability of false healing of the annular ring is obviously reduced.
[0019] Alternatively, the fiber ring suture device in use, one end of the suture is connected to the anchor rod 12, and the anchor rod is located in the perforation 22 at the U-shaped opening 23 (as shown) Figure 10 The line 5 is located in the U-shaped groove 11 and is placed outside the hand-held part 1 by the continuous U-shaped groove 11 of the U-shaped hook body 3, the rod body 2 and the hand-held part 1. After the line 5 is appropriately tightened, the threaded rotating rod is tightened to press and fix the line 5 on the inner wall of the U-shaped groove 11.
[0020] Then the U-shaped hook body 3 is inserted into the intervertebral disc from the inside of the annular break, and then is hooked from the inside of the annular ring to the outside of the annular ring. Then the threaded rotating rod is loosened, the flexible top rod is pressed to pass through the perforation by pressing the pressing button 4 at the proximal end, and the anchor rod 12 in the perforation 22 is pushed out. Then the U-shaped hook body 3 is withdrawn, and the other end of the same line is hooked from the inside to the outside of the annular break at the other side. The two ends of the hooked line are tightened, and then the knot pushing device is used to knot and suture the annular ring under the endoscope. The method is the same as the conventional surgical suture technology, but the fiber ring suture device in use is simple to operate, and the probability of false healing of the annular ring is obviously reduced.
[0021] The preferred embodiments of the present application are disclosed, but are not limited to this. Those skilled in the art can easily understand the spirit of the present application according to the above embodiments, and make different inferences and changes, as long as they do not deviate from the spirit of the present application, and are within the protection scope of the present application.
Claims
1. A fiber loop suture device, comprising a handle, a rod coaxially connected to the handle, and a U-shaped hook connected to the distal end of the rod, characterized in that: A continuous U-shaped groove is provided on the back side wall of the handheld part, the rod body, and the U-shaped hook body. The U-shaped groove extends from the proximal end of the handheld part through the rod body and the U-shaped hook body and through the end of the U-shaped hook body. The U-shaped groove forms a U-shaped opening at the end of the U-shaped hook body. The U-shaped hook body has a through hole at its end; it also includes a channel located in the hand-held part, the rod body, and the U-shaped hook body, and continuously passing through the rod body and the U-shaped hook body from the proximal end of the hand-held part, and communicating with the through hole at the end of the U-shaped hook body; a flexible push rod is provided in the channel, the proximal end of the flexible push rod passes through the hand-held part, and the distal end of the flexible push rod is located in the channel inside the U-shaped hook body; Pressing the proximal end of the flexible push rod can cause the distal end of the flexible push rod to pass through the perforation and push out the knotted ball end of the line hanging in the U-shaped opening or push out the anchor rod located in the perforation connected to the end of the line; the line is located in the U-shaped groove and the U-shaped groove of the continuous U-shaped groove of the U-shaped hook, rod and handhold is placed outside the handhold.
2. The fiber ring suture device as described in claim 1, characterized in that: A press button is provided at the proximal end of the handheld part. The press button is installed in the mounting hole at the end of the handheld part and can move axially. The distal end of the press button is connected to the proximal end of the flexible push rod. A spring is provided between the press button and the handheld part. The spring applies a pulling force to the press button and the flexible push rod in the proximal direction, causing the distal end of the flexible push rod to be located in the channel of the U-shaped hook body.
3. The fiber ring suture device as described in claim 2, characterized in that: The button has a guide on its side wall, and the guide is located in a guide groove on the side wall of the handheld part.
4. The fiber ring suture device as described in claim 1, characterized in that: The handheld part is provided with a threaded rotating rod that passes laterally through the U-shaped groove at the near end. The far end of the line is fixed with a U-shaped hook that passes through the U-shaped groove. After being pulled tight, the threaded rotating rod is tightened to press and fix the line here.
5. The fiber ring suture device as described in claim 1, characterized in that: The perforation is located inside the U-shaped groove.
6. The fiber ring suture device as claimed in claim 1, characterized in that: The U-shaped hook has a pointed end.