Nerve dissector

Abstract

The utility model discloses a nerve detacher which comprises a handle, a detaching rod and an operating piece. The circumferential surface of the handle is provided with a containing groove recessed in the second direction and a plurality of locking grooves communicated with the containing groove, the locking grooves are arranged at intervals in the first direction, and an included angle is formed between the first direction and the second direction. The stripping rod comprises a stripping part located at the first end of the stripping rod, and the second end of the stripping rod is arranged in the handle in a penetrating mode in the first direction and extends into the containing groove. The operating piece is at least partially arranged at the second end of the stripping rod in a sleeving mode, can controllably rotate relative to the stripping rod and can controllably drive the second end of the stripping rod to move in the containing groove in the first direction. The stripping rod can be driven to move along the containing groove by controlling the operating piece, the distance between the stripping part at the end of the stripping rod and the handle is adjusted, and then the length of the stripping rod extending out of the handle is adjusted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to surgical instruments technical field, concretely relates to a nerve dissector. BACKGROUND

[0002] The percutaneous foraminotomy is a kind of medical instrument widely used in intervertebral disc degenerative disease of spinal column, and the current surgical treatment of spinal intervertebral disc herniation mainly has two methods: one is the lateral rear percutaneous intervertebral foramen approach, establishes a 7mm channel in the affected part, puts into the intervertebral foramen mirror connection image system, removes protruding intervertebral disc under endoscope and releases nerve;The other is the posterior percutaneous intervertebral approach, adopts the intervertebral disc removal method of vertebral plate fenestration direct vision, cuts a 10mm incision in the affected part, opens a window in the vertebral plate of spinal column with ring saw or drill to establish a working channel, removes intervertebral disc with nucleus pulposus forceps, carries out nerve root decompression hemostasis and removes the compression of intervertebral disc to nerve root.

[0003] The nerve dissector is used for stripping nerve tissue in endoscopic surgery, and can also protect nerve tissue and keep the surgical field clear and unobstructed.

[0004] The length of the existing nerve dissector cannot be adjusted, and since the lengths of nerve dissectors required by different surgical procedures are different, different lengths of nerve dissectors need to be equipped for different surgical procedures, increasing the cost of configuring surgical instruments.

[0005] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present utility model, and should not be regarded as acknowledging or in any form implying that this information constitutes prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a nerve dissector, which is used to solve the problem that the length of the nerve dissector cannot be adjusted.

[0007] In order to achieve the above object, the utility model provides a kind of nerve stripper according to one specific embodiment, and the nerve stripper includes handle, stripping rod and operating piece.Handle extends along first direction, and the circumferential surface of handle is provided with the accommodating groove recessed along second direction and multiple locking slots communicated with accommodating groove, multiple locking slots are arranged along first direction with interval, and first direction and second direction have included angle between them.Stripping rod includes stripping part at its first end, and the second end of stripping rod is arranged in handle along first direction and extends into accommodating groove.Operating piece is at least partially sleeved on the second end of stripping rod, operating piece can be controlled to rotate relative to stripping rod, and operating piece can be controlled to drive the second end of stripping rod to move in accommodating groove along first direction.In locked state, operating piece is at least partially located in locking slot, and stripping rod and operating piece are limited to move along first direction.In unlocked state, operating piece is rotated relative to stripping rod and is separated from locking slot, and stripping rod and operating piece can move along first direction.

[0008] In one or more embodiments of the utility model, radially recessed stop groove is provided on the circumference of stripping rod, and operating piece is at least partially sleeved in stop groove.

[0009] In one or more embodiments of the utility model, stripping rod further includes main body part, main body part includes large diameter section and small diameter section integrally connected, stripping rod includes stop sleeve sleeved on small diameter section, stop sleeve is arranged with interval with large diameter section, and then stop groove is formed between stop sleeve and large diameter section.

[0010] In one or more embodiments of the utility model, stop rotation groove recessed along the radial direction of stripping rod is provided in accommodating groove, and stripping rod includes stop rotation part at least partially extending into stop rotation groove.

[0011] In one or more embodiments of the utility model, operating piece includes operating part located outside accommodating groove and locking slot.

[0012] In one or more embodiments of the utility model, the circumferential outer surface of handle is provided with protruding first arc surface, and the side of operating part close to handle is provided with recessed second arc surface, and in locked state, first arc surface and second arc surface are fitted.

[0013] In one or more embodiments of the utility model, the side of operating part away from handle is provided with protruding third arc surface.

[0014] In one or more embodiments of the utility model, the side of operating part away from handle is recessed with recess.

[0015] In one or more embodiments of the utility model, multiple locking slots include first locking slot and second locking slot, and in the plane perpendicular to first direction, the vertical projection of first locking slot and the vertical projection of second locking slot do not overlap or partially overlap.

[0016] In one or more embodiments of this utility model, the first locking groove and the second locking groove are alternately arranged in a first direction.

[0017] Compared with the prior art, the present invention can drive the peeling rod to move along the receiving groove by controlling the operating component, adjusting the distance between the peeling part at the end of the peeling rod and the handle, thereby adjusting the length of the peeling rod extending out of the handle. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the nerve dissector in one embodiment of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of a portion of the nerve dissector in one embodiment of the present invention;

[0021] Figure 3 This is a partial side view of the nerve dissector in one embodiment of the present invention;

[0022] Figure 4 This is an exploded view of the nerve dissector in one embodiment of the present invention.

[0023] Figure 5 This is an exploded view of the nerve dissector from another perspective in one embodiment of the present invention;

[0024] Figure 6 This is an exploded view of the peeling rod and the operating component in one embodiment of the present invention;

[0025] Figure 7 This is a cross-sectional view of a nerve dissector in one embodiment of the present invention;

[0026] Figure 8 This is another cross-sectional view of the nerve dissector in one embodiment of the present invention.

[0027] Explanation of main reference numerals: 1. Handle, 101. Receiving groove, 102. Locking groove, 1021. First locking groove, 1022. Second locking groove, 103. Anti-rotation groove, 104. First arc surface, 2. Peeling rod, 21. Main body, 211. Large diameter section, 212. Small diameter section, 213. Stop groove, 22. Peeling part, 23. Stop sleeve, 24. Pin, 241. Anti-rotation part, 3. Operating component, 31. Operating part, 311. Second arc surface, 312. Third arc surface, 313. Groove, 32. Rod part, 33. Ring part. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0029] Secondly, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] The term "first direction" refers to the direction in which handle 1 extends; see reference for details. Figure 2 The X-axis direction in the diagram. The terms "second direction" and "first direction" have an angle between them; in a preferred embodiment, the "second direction" is perpendicular to the "first direction," as detailed in [reference needed]. Figure 2 The Y-axis direction in the diagram.

[0031] In one embodiment, reference is made to Figures 1 to 8As shown, this utility model provides a nerve dissector, which includes a handle 1, a dissector 2, and an operating component 3. The handle 1 extends along a first direction and has a receiving groove 101 and multiple locking grooves 102. The receiving groove 101 and the multiple locking grooves 102 are both recessed from the circumferential surface of the handle 1 along a second direction. The locking grooves 102 extend through the circumferential surface of the handle 1 from one side of the receiving groove 101 along a direction that forms a certain angle with its recessed direction. The receiving groove 101 has a first preset length in the first direction, which can be set according to surgical needs. The multiple locking grooves 102 are arranged at intervals along the first direction. The dissector 2 includes an integrally connected main body 21 and a dissector 22. The dissector 22 is located at the first end of the main body 21, and the second end of the main body 21 passes through the handle 1 along the first direction and extends into the receiving groove 101. The operating element 3 is sleeved on the second end of the peeling rod 2. The operating element 3 can be rotated relative to the peeling rod 2 in a controlled manner, and the second end of the peeling rod 2 can be driven to move in the receiving groove 101 along the first direction in a controlled manner.

[0032] According to the above structural design, the neural stripper has a locked state and an unlocked state.

[0033] In the locked state, the operating member 3 is at least partially located in the locking groove 102. The two groove walls of the locking groove 102, which are arranged opposite each other in the first direction, form a limiting surface, which restricts the operation member 3 from moving in the first direction, thereby restricting the peeling rod 2 from moving in the first direction, and locking the peeling rod 2 to extend beyond the handle 1 by a certain length.

[0034] In the unlocked state, the operating member 3 rotates relative to the peeling rod 2 and disengages from the locking groove 102. Moving the operating member 3 along the first direction drives the peeling rod 2 to move synchronously, changing the length of the peeling rod 2 extending out of the handle 1. When the operating member 3 moves to another locking groove 102, rotating the operating member 3 again to move it into another locking groove 102 will lock the peeling rod 2 again.

[0035] In one embodiment, reference is made to Figures 2 to 4 As shown, the locking groove 102 includes a first locking groove 102 and a second locking groove 1022. On a plane perpendicular to the first direction, the vertical projections of the first locking groove 102 and the second locking groove 1022 do not overlap or only partially overlap. That is, on a plane perpendicular to the first direction, the first locking groove 102 and the second locking groove 1022 extend along different radial directions of the peeling rod 2, avoiding the provision of multiple locking grooves 102 on the same side of the receiving groove 101, and ensuring that the handle 1 portions on both sides of the receiving groove 101 have the same or similar structural strength.

[0036] Furthermore, on a plane perpendicular to the first direction, the first locking groove 102 and the second locking groove 1022 are both parallel to the same diameter of the peeling rod 2, that is, the first locking groove 102 and the second locking groove 1022 extend to the circumferential surface of the handle 1 in opposite directions.

[0037] In one embodiment, reference is made to Figures 2 to 4 As shown, the first locking slot 102 and the second locking slot 1022 are alternately arranged in the first direction, that is, in the first direction, there is a second locking slot 1022 between two adjacent first locking slots 102, and there is also a first locking slot 102 between two adjacent second locking slots 1022.

[0038] In other embodiments, the first locking slot 102 and the second locking slot 1022 may also be arranged in a non-alternating manner, and multiple second locking slots 1022 may be provided between two adjacent first locking slots 102, or no second locking slots 1022 may be provided.

[0039] Similarly, multiple first locking slots 102 may be provided between two adjacent second locking slots 1022, or no first locking slots 102 may be provided.

[0040] The first locking groove 102 and the second locking groove 1022 can be set at equal intervals or at unequal intervals, which can be set according to the surgical needs.

[0041] In one embodiment, reference is made to Figure 5 As shown, the peeling rod 2 has a radially recessed stop groove 213 in its circumferential direction. The operating member 3 is at least partially fitted into the stop groove 213. The stop groove 213 forms two opposing stop surfaces in the first direction. The ring portion 33 of the operating member 3 fitted into the stop groove 213 is restricted within these two stop surfaces to prevent the operating member 3 from moving relative to the peeling rod 2 in the first direction.

[0042] Furthermore, the main body 21 of the peeling rod 2 includes an integrally connected large-diameter section 211 and a small-diameter section 212. The cross-sectional diameter of the large-diameter section 211 is larger than the cross-sectional diameter of the small-diameter section 212. The small-diameter section 212 and the peeling part 22 are located on both sides of the large-diameter section 211, respectively.

[0043] The stripping rod 2 includes a stop sleeve 23 sleeved on the small diameter section 212. The stop sleeve 23 is set at a certain distance from the large diameter section 211, thereby forming a stop groove 213 between the stop sleeve 23 and the large diameter section 211. The length of the stop groove 213 in the first direction is equal to the maximum length of the ring portion 33 of the operating member 3 in the first direction.

[0044] In one embodiment, reference is made to Figure 5 , Figure 6 and Figure 8As shown, the peeling rod 2 includes a pin that passes through the stop sleeve 23 and the small diameter section 212 along the second direction, and the stop sleeve 23 and the small diameter section 212 are fixedly connected together by the pin.

[0045] Furthermore, the pin also serves to restrict the rotation of the peeling rod 2. Specifically, the receiving groove 101 is provided with an anti-rotation groove 103 that is recessed radially along the peeling rod 2. The anti-rotation groove 103 has a second preset length in the first direction. The pin protrudes from the stop sleeve 23, and the portion of the pin protruding from the stop sleeve 23 forms an anti-rotation part 241. The anti-rotation part 241 extends at least partially into the anti-rotation groove 103, restricting the rotation of the peeling rod 2.

[0046] In one embodiment, reference is made to Figures 5 to 8 As shown, the operating member 3 includes an operating part 31, a lever part 32, and a ring part 33. The operating part 31 is constructed as a block structure similar to a button and is located outside the receiving groove 101 and the locking groove 102, making it convenient for the operator to apply force to the operating part 31. The lever part 32 and the ring part 33 are integrally formed. The end of the lever part 32 away from the ring part 33 is inserted into the operating part 31, and the ring part 33 is sleeved in the stop groove 213 of the peeling rod 2.

[0047] Furthermore, a groove 313 is recessed on the side of the operating part 31 away from the handle 1. In actual application, after the operator's hand grips the handle 1, part of the thumb will enter the groove 313 after contacting the operating part 31, increasing the friction between the thumb and the operating part 31 and making it easier for the operator to apply force. Of course, in other situations, the operator can also use other fingers to apply force to the operating part 31.

[0048] In other embodiments, the operating part 31, the rod part 32, and the ring part 33 may also be configured as an integrally formed structure.

[0049] In one embodiment, reference is made to Figures 5 to 8 As shown, the outer circumferential surface of the handle 1 is provided with a raised first arc surface 104. The locking groove 102 extends through the first arc surface 104 on the side away from the receiving groove 101. The side of the operating part 31 near the handle 1 is provided with a recessed second arc surface 311. The radii of the first arc surface 104 and the second arc surface 311 are basically the same. When the operating part 3 is in the locked state, the first arc surface 104 and the second arc surface 311 fit together, making it convenient for the operator to rotate the operating part 31 to unlock the operating part 3.

[0050] Furthermore, the operating part 31 has a protruding third arc surface 312 on the side away from the handle 1, and the groove 313 is recessed from the third arc surface 312 toward the handle 1.

[0051] Furthermore, there are two first arc surfaces 104, which are arranged opposite to each other. One of the first arc surfaces 104 is penetrated by the first locking groove 1021, and the other first arc surface 104 is penetrated by the second locking groove 1022.

[0052] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A nerve dissector, characterized in that, include: A handle (1) extending along a first direction, wherein a receiving groove (101) recessed along a second direction and a plurality of locking grooves (102) communicating with the receiving groove (101) are provided on the circumferential surface of the handle (1), the plurality of locking grooves (102) being arranged at intervals along the first direction, and having an angle between the first direction and the second direction; A peeling rod (2) includes a peeling portion (22) at its first end, and the second end of the peeling rod (2) passes through the handle (1) in a first direction and extends into the receiving groove (101); An operating element (3) is at least partially sleeved on the second end of the peeling rod (2). The operating element (3) can be controlled to rotate relative to the peeling rod (2) and can be controlled to drive the second end of the peeling rod (2) to move in a first direction within the receiving groove (101). In the locked state, the operating member (3) is at least partially located in the locking groove (102), restricting the peeling rod (2) and the operating member (3) from moving in the first direction; In the unlocked state, the operating member (3) rotates relative to the peeling rod (2) and disengages from the locking groove (102), and the peeling rod (2) and the operating member (3) can move along the first direction.

2. The nerve dissector according to claim 1, characterized in that, The peeling rod (2) has a radially recessed stop groove (213) in its circumferential direction, and the operating member (3) is at least partially fitted into the stop groove (213).

3. The nerve dissector according to claim 2, characterized in that, The peeling rod (2) also includes a main body (21), which includes an integrally connected large-diameter section (211) and a small-diameter section (212); The peeling rod (2) includes a stop sleeve (23) sleeved on the small diameter section (212), the stop sleeve (23) being spaced apart from the large diameter section (211), thereby forming a stop groove (213) between the stop sleeve (23) and the large diameter section (211).

4. The nerve dissector according to claim 1, characterized in that, The receiving groove (101) is provided with an anti-rotation groove (103) that is radially recessed along the peeling rod (2), and the peeling rod (2) includes an anti-rotation portion (241) that extends at least partially into the anti-rotation groove (103).

5. The nerve dissector according to claim 1, characterized in that, The operating element (3) includes an operating part (31) located outside the receiving groove (101) and the locking groove (102).

6. The nerve dissector according to claim 5, characterized in that, The outer circumferential surface of the handle (1) is provided with a raised first arc surface (104), and the side of the operating part (31) near the handle (1) is provided with a recessed second arc surface (311). In the locked state, the first arc surface (104) and the second arc surface (311) are in contact.

7. The nerve dissector according to claim 5, characterized in that, The operating part (31) has a protruding third arc surface (312) on the side away from the handle (1).

8. The nerve dissector according to claim 5, characterized in that, The operating part (31) has a recessed groove (313) on the side away from the handle (1).

9. The nerve dissector according to claim 1, characterized in that, The plurality of locking slots (102) includes a first locking slot (1021) and a second locking slot (1022). On a plane perpendicular to the first direction, the vertical projections of the first locking slot (1021) and the vertical projections of the second locking slot (1022) do not overlap or partially overlap.

10. The nerve dissector according to claim 9, characterized in that, The first locking slot (1021) and the second locking slot (1022) are alternately arranged in the first direction.

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