Spine endoscope visual trephine with adjustable depth limit

Abstract

The utility model discloses a depth-limiting-adjustable spinal endoscope visual trephine which comprises a trephine body, a trephine body and a depth limiting device. An outer sleeve sleeves the outer side of the trephine main body; the outer sleeve and the trephine body are arranged in a relative sliding mode. A fixing piece for fixing the outer sleeve is arranged on the outer sleeve; a first handle is arranged at one end of the trephine main body; and saw teeth are arranged at the other end of the trephine main body. According to the trephine, the outer sleeve is slidably arranged on the outer side of the trephine body in the sleeving mode, the relative position of the trephine body and the outer sleeve is controlled through the fixing piece, and therefore the trephine depth can be adjusted, and the situation that a patient is injured due to the fact that the body entering depth changes in the trephine using process can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically to a depth-limiting adjustable spinal endoscope visual trephine saw. Background Art

[0002] The trephine saw is mainly applied in surgical operations and is mainly used to remove or abrade bone tissue so as to achieve the purpose of removing diseased bone tissue or exposing the surgical field. When performing a spinal endoscope operation, it is necessary to saw off bone tissue through the trephine saw under the monitoring of the endoscope to expose the surgical field, and at the same time, the removed bone tissue can be used for bone grafting. The existing visual trephine saw does not have the function of depth limitation and cannot adjust the depth that can be trephined. During the process of sawing off bone tissue, accidents such as nerve injury are likely to occur due to excessive force or the detachment of the trephine saw.

[0003] Therefore, how to provide a depth-limiting adjustable spinal endoscope visual trephine saw that can adjust the trephining depth is one of the technical problems urgently to be solved in this field. Content of the Utility Model

[0004] In view of this, the utility model provides a depth-limiting adjustable spinal endoscope visual trephine saw, and the purpose is to solve the problems existing in the prior art.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A depth-limiting adjustable spinal endoscope visual trephine saw includes: a trephine saw main body; an outer sleeve is sleeved outside the trephine saw main body; the outer sleeve is arranged to slide relative to the trephine saw main body; a fixing member for fixing the outer sleeve is arranged on the outer sleeve; a first handle is arranged at one end of the trephine saw main body; and saw teeth are arranged at the other end of the trephine saw main body.

[0007] Preferably, the fixing member includes a threaded column; a threaded hole is formed on the side surface of the outer sleeve; and the threaded column is threadedly connected to the threaded hole.

[0008] Preferably, the fixing member further includes a turntable; the turntable is arranged at one end of the threaded column away from the trephine saw main body.

[0009] Preferably, a plurality of first observation grooves are formed at one end of the trephine saw main body close to the saw teeth.

[0010] Preferably, the plurality of first observation grooves are annularly and arrayedly distributed on the side surface of the trephine saw main body.

[0011] Preferably, a second observation groove is formed on the side surface of the outer sleeve.

[0012] The utility model has achieved the following technical effects compared with the prior art: By slidably sleeving an outer sleeve on the outside of the trephine main body and controlling the relative position of the trephine main body and the outer sleeve through a fixing member, the depth adjustment of the trephine can be realized, and thus the harm caused to the patient due to the change of the entering depth during the use of the trephine can be avoided. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a depth-limiting adjustable spinal endoscope visual trephine according to Embodiment 1 of the utility model;

[0014] Figure 2 It is a schematic structural diagram of a depth-limiting adjustable spinal endoscope visual trephine according to Embodiment 2 of the utility model;

[0015] In the figure: 1, trephine main body; 2, outer sleeve; 3, fixing member; 31, threaded column; 32, turntable; 4, first handle; 5, saw teeth; 6, first observation slot; 7, second observation slot; 8, second handle. Detailed Embodiment

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0017] Embodiment 1

[0018] Refer to Figure 1 As shown, the present utility model discloses a depth-limiting adjustable spinal endoscope visual trephine, including: a trephine main body 1; an outer sleeve 2 is sleeved outside the trephine main body 1; the outer sleeve 2 is arranged to slide relative to the trephine main body 1; a fixing member 3 for fixing the outer sleeve 2 is provided on the outer sleeve 2; a first handle 4 is provided at one end of the trephine main body 1; saw teeth 5 are provided at the other end of the trephine main body 1; during use, the outer sleeve 2 is moved along the axis direction of the trephine main body 1. When the outer sleeve 2 moves to a suitable position, the outer sleeve 2 is fixed on the trephine main body 1 by using the fixing member 3, and the relative position adjustment of the trephine main body and the outer sleeve 2 can be realized. Thus, the entering depth of the trephine can be limited by the outer sleeve, and the entering depth of the trephine can be adjusted. Furthermore, the trephine depth can be adjusted arbitrarily according to the bone quality of different patients.

[0019] The above technical solution realizes the depth adjustment of the trephine by slidably sleeving an outer sleeve on the outside of the trephine main body and controlling the relative position of the trephine main body and the outer sleeve through a fixing member, and thus can avoid the harm caused to the patient due to the change of the entering depth during the use of the trephine.

[0020] In this embodiment, the fixing member 3 includes a threaded post 31; a threaded hole is formed in the side surface of the outer sleeve 2 near one end of the first handle 4; the threaded post 31 is threadedly connected to the threaded hole; during use, tighten the threaded post 31 so that one end of the threaded post 31 close to the circular saw body 1 abuts against the side surface of the circular saw body, and then the outer sleeve 2 can be fixed. When it is necessary to adjust the depth of the circular resection, loosen the threaded post 31, move the outer sleeve 2 to a suitable position, and then tighten the threaded post 31.

[0021] In this embodiment, the fixing member 3 further includes a turntable 32; the turntable 32 is fixedly connected to one end of the threaded post 31 away from the circular saw body 1; during use, rotate the threaded post 31 through the turntable 32 to improve the operation convenience.

[0022] In this embodiment, anti-slip lines are provided on the outer side surface of the turntable 32.

[0023] In this embodiment, four first observation slots 6 are formed at one end of the circular saw body 1 close to the saw teeth 5, which is convenient for observing the bone tissue resection situation.

[0024] In this embodiment, the four first observation slots 6 are annularly and arrayedly distributed on the side surface of the circular saw body 1.

[0025] In this embodiment, a second handle 8 is provided at one end of the outer sleeve 2 close to the first handle 4. During use, hold the second handle 8 to control the movement of the outer sleeve 2, which improves the operation convenience; a through hole is formed at the middle position of the second handle 8 to facilitate the circular saw body 1 to pass through.

[0026] In this embodiment, scale lines are provided on the outer side surface of the circular saw body 1.

[0027] Embodiment Two

[0028] Refer to Figure 2 As shown, the difference between this embodiment and Embodiment One is that a second observation slot 7 is formed in the side surface of the outer sleeve 2 away from one end of the first handle 4, which can more comprehensively observe the circular resection and rotation conditions of the bone core inside the circular saw.

[0029] The above is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A depth-limited adjustable spinal endoscope visual trephine, characterized in that, Comprising: A trephine body (1); an outer sleeve (2) is sleeved outside the trephine body (1); the outer sleeve (2) is arranged to slide relative to the trephine body (1); a fixing member (3) for fixing the outer sleeve (2) is provided on the outer sleeve (2); a first handle (4) is provided at one end of the trephine body (1); and a sawtooth (5) is provided at the other end of the trephine body (1).

2. The depth-limited adjustable spinal endoscope visual trephine according to claim 1, wherein The fixing member (3) includes a threaded post (31); a threaded hole is formed on the side surface of the outer sleeve (2); the threaded post (31) is threadedly connected to the threaded hole.

3. The depth-limiting adjustable spinal endoscope visible trephine according to claim 2, characterized in that, The fixing member (3) further includes a turntable (32); the turntable (32) is arranged at one end of the threaded post (31) away from the trephine body (1).

4. A depth-limited adjustable spinal endoscope visual trephine according to claim 1, characterized in that, A plurality of first observation slots (6) are formed at one end of the trephine body (1) close to the sawtooth (5).

5. The depth-limiting adjustable spinal endoscope visual trephine according to claim 4, wherein The plurality of first observation slots (6) are distributed in a circular array on the side surface of the trephine body (1).

6. The depth-limited adjustable spinal endoscope visual trephine according to claim 5, characterized in that, A second observation slot (7) is formed on the side surface of the outer sleeve (2).

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