Intervertebral disc fibrous ring opening device

Abstract

The utility model relates to an intervertebral disc fibrous ring opening device which comprises a driving part and a fibrous ring opening assembly arranged at one end of the driving part. The fiber ring opening assembly comprises a fiber ring containing part and a fiber ring fixing part arranged in the fiber ring containing part, one end of the fiber ring containing part and one end of the fiber ring fixing part are both fixedly connected with the driving end of the driving piece, and the other end of the fiber ring fixing part extends out of the fiber ring containing part. According to the intervertebral disc fibrous ring opening device, the fibrous ring can be fixed through the fibrous ring fixing part, so that sliding between the intervertebral disc fibrous ring opening device and the fibrous ring can be avoided, and meanwhile the intervertebral disc fibrous ring opening device can be fixed through the fibrous ring opening structure formed by the fibrous ring containing part and the fibrous ring fixing part. According to the intervertebral disc opening device, the intervertebral disc fibrous ring is opened, so that a regular opening is obtained, the regular opening is not prone to damaging surrounding blood vessels, the visual field under an endoscope is clear, and follow-up operation in the intervertebral disc is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an intervertebral disc annulus fibrosus opening device. BACKGROUND

[0002] Due to the advantages of minimally invasive, less bleeding, rapid recovery, high safety and good effect, the endoscopic lumbar fusion surgery is more and more favored by patients and doctors, and has a wide development prospect. Therefore, how to safely and efficiently remove the intervertebral disc tissue under the visualization of the endoscope, and how to finely and high-quality process the cartilage endplate are the problems that are concerned.

[0003] However, for the opening processing of the intervertebral disc annulus fibrosus, radiofrequency or nucleus pulposus forceps is often used to bite a small hole on the intervertebral disc annulus fibrosus, and then the nucleus pulposus forceps or the endoscopic gun forceps is used to expand the opening. However, the above-mentioned method is low in efficiency and time-consuming and laborious. At the same time, the method of expanding the opening by the nucleus pulposus forceps or the endoscopic gun forceps also has the technical problems of small annulus fibrosus opening and irregular opening shape, which easily damages the surrounding blood vessels, and the overflowed blood leads to unclear endoscopic vision, thereby affecting the operation of intervertebral disc removal. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems of the prior art, the present application provides a technical scheme of an intervertebral disc annulus fibrosus opening device, that is, the present application sets the annulus fibrosus opening assembly including the annulus fibrosus accommodating part and the annulus fibrosus fixing part at one end of the driving member, so as to fix the annulus fibrosus by the annulus fibrosus fixing part, avoid the sliding between the intervertebral disc annulus fibrosus opening device and the annulus fibrosus, and open the intervertebral disc annulus fibrosus by the annulus fibrosus opening structure formed by the annulus fibrosus accommodating part and the annulus fibrosus fixing part. Therefore, the opening efficiency and safety can be improved, the opening is more regular, the surrounding blood vessels are not easily damaged, the vision under the endoscope is clearer, and the subsequent operation in the intervertebral disc is facilitated.

[0005] The present application provides an intervertebral disc annulus fibrosus opening device, which comprises a driving member and an annulus fibrosus opening assembly arranged at one end of the driving member.

[0006] The annulus fibrosus opening assembly comprises an annulus fibrosus accommodating part and an annulus fibrosus fixing part arranged in the annulus fibrosus accommodating part. One end of the annulus fibrosus accommodating part and one end of the annulus fibrosus fixing part are fixedly connected with the driving end of the driving member. The other end of the annulus fibrosus fixing part extends out of the annulus fibrosus accommodating part. The gap between the annulus fibrosus accommodating part and the annulus fibrosus fixing part forms an annulus fibrosus opening structure.

[0007] Further, the annulus fibrosus fixing part comprises a fixing rod and a tip fixing part arranged at one end of the fixing rod, the other end of the fixing rod is fixedly connected with the driving end of the driving part, and the tip fixing part extends out of the annulus fibrosus accommodating part.

[0008] Further, the tip fixing part is in a pyramid structure, the top of the tip fixing part in the pyramid structure is located at the side away from the fixing rod, and the bottom of the tip fixing part in the pyramid structure is fixedly connected with one end of the fixing rod.

[0009] Further, the outer side wall of the fixing rod is provided with a threaded structure, and at least part of the threaded structure on the outer side wall of the fixing rod extends out of the annulus fibrosus accommodating part.

[0010] Further, the annulus fibrosus accommodating part is in a rectangular structure, and the side of the annulus fibrosus accommodating part in the rectangular structure away from the driving part is open.

[0011] Further, the annulus fibrosus accommodating part is provided with a blade structure, and the blade structure is arranged on the side of the annulus fibrosus accommodating part away from the driving part.

[0012] Further, one end of the annulus fibrosus fixing part is fixedly connected with the center of the annulus fibrosus accommodating part in the rectangular structure.

[0013] Further, the driving part comprises a holding part and a driving rod, one end of the holding part is fixedly connected with one end of the driving rod, and the other end of the driving rod is fixedly connected with one end of the annulus fibrosus accommodating part.

[0014] Further, the central axis of the driving rod overlaps with the central axis of the fixing rod.

[0015] Further, the holding part is provided with an anti-skid structure, and the anti-skid structure is located on the outer side wall of the holding part.

[0016] The implementation of the present application has the following beneficial effects:

[0017] The present application sets the annulus fibrosus opening assembly comprising the annulus fibrosus accommodating part and the annulus fibrosus fixing part at one end of the driving part, so as to fix the annulus fibrosus by the annulus fibrosus fixing part, avoid the sliding between the intervertebral disc annulus fibrosus opening device and the annulus fibrosus, and also open the intervertebral disc annulus fibrosus by the annulus fibrosus opening structure formed by the annulus fibrosus accommodating part and the annulus fibrosus fixing part, thereby improving the opening efficiency and safety, and the opening is regular and not easy to damage the surrounding blood vessels, so that the field of view under the endoscope is clearer, thereby helping the subsequent operation in the intervertebral disc. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0019] Figure 1 A structural schematic diagram of an annulus fibrosus opening device provided by an embodiment of the present application;

[0020] Figure 2 A structural schematic diagram of an annulus fibrosus opening assembly provided by an embodiment of the present application in a first angle;

[0021] Figure 3 A structural schematic diagram of an annulus fibrosus opening assembly provided by an embodiment of the present application in a second angle;

[0022] Figure 4 A structural schematic diagram of an annulus fibrosus opening assembly provided by an embodiment of the present application in a third angle;

[0023] In the drawings, the reference signs correspond to: 1 - driving member; 11 - holding part; 12 - driving rod; 13 - pressing part; 2 - annulus fibrosus opening assembly; 21 - annulus fibrosus accommodating part; 22 - annulus fibrosus fixing part; 221 - fixing rod; 222 - tip fixing part; 223 - blade structure. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0025] It should be noted that, in the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection, or can be in communication with each other; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0026] Hereinafter, the embodiments will be described with reference to the drawings, and the drawings do not have any limiting effect on the disclosure recorded in the claims.

[0027] Please refer to Figures 1-4 , the following will be combined Figures 1-4 The intervertebral disc annulus fibrosus opening device provided in the embodiment of the present application is described in detail.

[0028] The intervertebral disc annulus fibrosus opening device provided in the embodiment of the present application is described in detail. Figures 1-4 As shown in the figure, specifically, the intervertebral disc annulus fibrosus opening device comprises a driving member 1 and an annulus fibrosus opening assembly 2 arranged at one end of the driving member 1.

[0029] The annulus fibrosus opening assembly 2 comprises an annulus fibrosus accommodating portion 21 and an annulus fibrosus fixing portion 22 arranged in the annulus fibrosus accommodating portion 21, one end of the annulus fibrosus accommodating portion 21 and one end of the annulus fibrosus fixing portion 22 are fixedly connected with the driving end of the driving member 1, the other end of the annulus fibrosus fixing portion 22 extends out of the annulus fibrosus accommodating portion 21, and the gap between the annulus fibrosus accommodating portion 21 and the annulus fibrosus fixing portion 22 constitutes an annulus fibrosus opening structure.

[0030] In the embodiment of the present application, the annulus fibrosus accommodating portion 21 can limit the opening size of the annulus fibrosus, it can be understood that the caliber size of the annulus fibrosus accommodating portion 21 is equal to the opening size of the annulus fibrosus, the depth of the annulus fibrosus accommodating portion 21 can limit the maximum length of the annulus fibrosus opening, the other end of the annulus fibrosus fixing portion 22 is used for inserting into the annulus fibrosus, so as to fix the annulus fibrosus, thereby avoiding the relative sliding between the intervertebral disc annulus fibrosus opening device and the annulus fibrosus, at the same time, the annulus fibrosus accommodating portion 21 and the annulus fibrosus fixing portion 22 can constitute the annulus fibrosus opening structure, and then the annulus fibrosus opening structure can be used to open the intervertebral disc annulus fibrosus, thereby improving the opening efficiency and safety, and the opening is relatively regular, which is not easy to damage the surrounding blood vessels, so that the field of view under the endoscope is relatively clear, thereby helping the subsequent operation in the intervertebral disc.

[0031] In an optional embodiment, as shown in the figure, the annulus fibrosus fixing portion 22 comprises a fixing rod 221 and a pointed end fixing portion 222 arranged at one end of the fixing rod 221, the other end of the fixing rod 221 is fixedly connected with the driving end of the driving member 1, and the pointed end fixing portion 222 extends out of the annulus fibrosus accommodating portion 21. Figures 2-4 In the embodiment of the present application, the fixing rod 221 is used to fix the annulus fibrosus, and the pointed end fixing portion 222 is used as an insertion end for inserting into the annulus fibrosus, and then by arranging the pointed end fixing portion 222, it is helpful to reduce the resistance of inserting into the annulus fibrosus, thereby improving the opening efficiency of the annulus fibrosus.

[0032]

[0033] ​In actual application, the length of the tip fixing portion 222 extending out of the annulus fibrosus accommodating portion 21 can be 2mm-10mm. Optionally, the length of the tip fixing portion 222 extending out of the annulus fibrosus accommodating portion 21 is 2mm, 3mm, 5mm, 8mm, 9mm or 10mm, etc. Preferably, the length of the tip fixing portion 222 extending out of the annulus fibrosus accommodating portion 21 is 5mm. The length of the tip fixing portion 222 extending out of the annulus fibrosus accommodating portion 21 is the distance from the insertion end of the tip fixing portion 222 to the edge of the annulus fibrosus accommodating portion 21 away from the driving member 1. Further, by extending the tip fixing portion 222 out of the annulus fibrosus accommodating portion 21, the annulus fibrosus can be fixed preferentially, thereby further improving the opening efficiency of the annulus fibrosus.

[0034] In a specific embodiment, as shown in Figures 2-4 The outer side wall of the fixing rod 221 is provided with a threaded structure. At least part of the threaded structure on the outer side wall of the fixing rod 221 extends out of the annulus fibrosus accommodating portion 21.

[0035] Specifically, the threaded structure is arranged on the outer side wall of the fixing rod 221 to increase the friction between the fixing rod 221 and the annulus fibrosus, thereby improving the fixing stability of the annulus fibrosus. Further, at least part of the threaded structure on the outer side wall of the fixing rod 221 extends out of the annulus fibrosus accommodating portion 21 to improve the insertion stability of the annulus fibrosus fixing portion 22.

[0036] In another specific embodiment, a plurality of transverse stripes (not shown in the figure) can be arranged on the outer side wall of the fixing rod 221 in the circumferential direction of the fixing rod 221. The plurality of transverse stripes are arranged at equal intervals. Further, the plurality of transverse stripes arranged at equal intervals on the outer side wall of the fixing rod 221 can improve the insertion stability of the annulus fibrosus fixing portion 22.

[0037] In an optional embodiment, the tip fixing portion 222 is a pyramid structure. The top of the pyramid structure of the tip fixing portion 222 is located on the side away from the fixing rod 221. The bottom of the pyramid structure of the tip fixing portion 222 is fixedly connected to one end of the fixing rod 221.

[0038] In the embodiment of the present application, the tip fixing portion 222 can be a triangular pyramid structure, a quadrangular pyramid structure, a pentagonal pyramid structure or a hexagonal pyramid structure, etc. Preferably, the tip fixing portion 222 is a quadrangular pyramid structure. Specifically, the tip fixing portion 222 in the pyramid structure can be Figures 2-4 Further, the tip fixing portion 222 in the pyramid structure can improve the insertion efficiency.

[0039] In an optional embodiment, Figures 2-4 As shown in the figure, the annulus fibrosus accommodating portion 21 is a rectangular structure. The side of the annulus fibrosus accommodating portion 21 away from the driving member 1 is open.

[0040] Specifically, by setting the fiber ring accommodating part 21 in a rectangular structure and opening the side away from the fixed rod 221, part of the structure of the fiber ring can enter from the opening when the fiber ring is opened, so as to realize the opening of the fiber ring. Further, the fiber ring accommodating part 21 is set in a rectangular structure to obtain a regular rectangular opening, which is not easy to damage the surrounding blood vessels, so that the field of view under the endoscope is relatively clear, thereby facilitating subsequent operation in the intervertebral disc.

[0041] In another optional embodiment, the fiber ring accommodating part 21 can also be a cylindrical structure, and a regular circular opening can be obtained, which is not easy to damage the surrounding blood vessels, so that the field of view under the endoscope is relatively clear, thereby facilitating subsequent operation in the intervertebral disc.

[0042] In an optional embodiment, the fiber ring accommodating part 21 is provided with a blade structure 223, which is arranged on the side of the fiber ring accommodating part 21 away from the driving part 1.

[0043] Specifically, by setting the blade structure 223 on the fiber ring accommodating part 21, the cutting capacity of the fiber ring accommodating part 21 is increased, so as to further improve the opening efficiency of the intervertebral disc fiber ring opening device.

[0044] In actual application, the blade structure 223 and the fiber ring accommodating part 21 are integrally formed.

[0045] In a specific embodiment, one end of the fiber ring fixing part 22 is fixedly connected with the center of the fiber ring accommodating part 21 in a rectangular structure.

[0046] Specifically, the fiber ring fixing part 22 is located at the center of the fiber ring accommodating part 21, so as to improve the stability of the fiber ring opening assembly 2.

[0047] In an optional embodiment, as shown in Figure 1 The driving part 1 includes a holding part 11 and a driving rod 12, one end of the holding part 11 is fixedly connected with one end of the driving rod 12, and the other end of the driving rod 12 is fixedly connected with one end of the fiber ring accommodating part 21.

[0048] In the embodiment of the present application, the holding part 11 is arranged to hold the intervertebral disc fiber ring opening device. In a specific embodiment, the holding part 11 can be a cylindrical structure, and optionally, the holding part 11 in a cylindrical structure is provided with an anti-skid structure on the outer side wall of the holding part 11, so as to avoid falling when holding the holding part 11, thereby improving the stability of the intervertebral disc fiber ring opening device. In actual application, the holding part 11 can be a handle.

[0049] In some embodiments, the driving member 1 further comprises a pressing portion 13, wherein the pressing portion 13 is located on the end of the holding portion 11 away from the driving rod 12, and the annulus fibrosus opening structure can be used to open the annulus fibrosus of the intervertebral disc by pressing the pressing portion 13.

[0050] In a specific embodiment, the driving rod 12 is used to drive the annulus fibrosus opening structure to open the annulus fibrosus of the intervertebral disc, and the central axis of the driving rod 12 overlaps the central axis of the fixing rod 221 in actual application, thereby improving the driving strength.

[0051] In combination with the above description of the specific structure of the annulus fibrosus opening device, the specific working principle of the annulus fibrosus opening device is described below.

[0052] Specifically, the operator holds the holding portion 11, anchors the pointed end of the annulus fibrosus fixing portion 222 in the intervertebral disc, and presses the pressing portion 13. At this time, the annulus fibrosus containing portion 21 and the annulus fibrosus fixing portion 22 can be inserted into the annulus fibrosus in the intervertebral disc under the driving of the driving rod 12, and the holding portion 11 can be pulled away from the annulus fibrosus until the annulus fibrosus containing portion 21 and the annulus fibrosus fixing portion 22 are pulled out of the annulus fibrosus, thereby breaking a rectangular opening in the annulus fibrosus to improve the opening efficiency, and obtaining a regular rectangular opening, thereby the regular rectangular opening is not easy to damage the surrounding blood vessels, and the field of view under the endoscope is clear, thereby facilitating subsequent operations in the intervertebral disc.

[0053] The above embodiments of the present application have the following beneficial effects:

[0054] The annulus fibrosus opening device of the present application comprises an annulus fibrosus opening assembly comprising an annulus fibrosus containing portion and an annulus fibrosus fixing portion at one end of the driving member, so that the annulus fibrosus can be fixed by the annulus fibrosus fixing portion to avoid sliding between the annulus fibrosus opening device and the annulus fibrosus, and the annulus fibrosus can be opened by the annulus fibrosus opening structure formed by the annulus fibrosus containing portion and the annulus fibrosus fixing portion, thereby improving the opening efficiency and safety, and the opening is regular and not easy to damage the surrounding blood vessels, so that the field of view under the endoscope is clear, thereby facilitating subsequent operations in the intervertebral disc.

[0055] The structure shown in the embodiments only relates to part of the structure of the present application scheme, and does not constitute a limitation on the equipment to which the present application scheme is applied. The specific equipment can comprise more or fewer components than shown, or some components can be combined, or have a different arrangement of components. It should be understood that the methods, devices, etc. disclosed in the embodiments can be implemented in other ways.

[0056] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An annulus fibrosus opening device for an intervertebral disc, characterized by The utility model relates to a fiber ring opening assembly and driving piece, comprising a driving piece (1) and a fiber ring opening assembly (2) arranged at one end of the driving piece (1). The fiber ring opening assembly (2) comprises a fiber ring accommodating part (21) and a fiber ring fixing part (22) arranged in the fiber ring accommodating part (21), one end of the fiber ring accommodating part (21) and one end of the fiber ring fixing part (22) are fixedly connected with the driving end of the driving piece (1), the other end of the fiber ring fixing part (22) extends out of the fiber ring accommodating part (21), and the gap between the fiber ring accommodating part (21) and the fiber ring fixing part (22) constitutes a fiber ring opening structure.

2. The annulus opening device of claim 1, wherein, The fiber ring fixing part (22) comprises a fixing rod (221) and a pointed end fixing part (222) arranged at one end of the fixing rod (221), the other end of the fixing rod (221) is fixedly connected with the driving end of the driving piece (1), and the pointed end fixing part (222) extends out of the fiber ring accommodating part (21).

3. The annulus opening device of claim 2, wherein, The pointed end fixing part (222) is in a pyramid structure, the top of the pointed end fixing part (222) in the pyramid structure is located on the side away from the fixing rod (221), and the bottom of the pointed end fixing part (222) in the pyramid structure is fixedly connected with one end of the fixing rod (221).

4. The annulus opening device of claim 2, wherein the at least one of the plurality of arms is configured to be inserted into the nucleus of the disc. The outer side wall of the fixing rod (221) is provided with a threaded structure, and at least part of the threaded structure on the outer side wall of the fixing rod (221) extends out of the fiber ring accommodating part (21).

5. The annulus opening device of claim 1, wherein, The fiber ring accommodating part (21) is in a rectangular structure, and the side of the fiber ring accommodating part (21) in the rectangular structure away from the driving piece (1) is open.

6. The annulus opening device of claim 5, wherein the at least one of the plurality of arms is configured to be inserted into the nucleus pulposus of the intervertebral disc. The fiber ring accommodating part (21) is provided with a blade structure (223), and the blade structure (223) is arranged on the side of the fiber ring accommodating part (21) away from the driving piece (1).

7. The annulus opening device of claim 5, wherein the at least one of the plurality of arms is configured to be inserted into the nucleus pulposus of the intervertebral disc. One end of the fiber ring fixing part (22) is fixedly connected with the center of the fiber ring accommodating part (21) in the rectangular structure.

8. The annulus opening device of claim 2, wherein, The driving piece (1) comprises a holding part (11) and a driving rod (12), one end of the holding part (11) is fixedly connected with one end of the driving rod (12), and the other end of the driving rod (12) is fixedly connected with one end of the fiber ring accommodating part (21).

9. The annulus fibrosus opening device according to claim 8, characterized in that The central axis of the driving rod (12) overlaps the central axis of the fixing rod (221).

10. The annulus opening device of claim 8, wherein, The holding part (11) is provided with an anti-skid structure, and the anti-skid structure is located on the outer side wall of the holding part (11).

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