Minimally invasive tool for windowing and fixing sleeve at joint of spinous process base part and vertebral plate

Abstract

The utility model discloses a minimally invasive tool for windowing and fixing a sleeve at the joint of a spinous process base part and a vertebral plate, which comprises a sleeve and a trephine, a clamping end is arranged at the front end of the sleeve, a first clamping groove is arranged on the side wall of the sleeve, a first elastic buckle matched with the first clamping groove is arranged on the side wall of the clamping end, and a second elastic buckle matched with the first clamping groove is arranged on the side wall of the trephine. A handle is arranged at the rear end of the sleeve, the trephine extends into the sleeve, a sawtooth end is arranged at the front end of the trephine, a second clamping groove is formed in the side wall of the trephine, a second elastic buckle matched with the second clamping groove is arranged on the side wall of the sawtooth end, and a hand wheel is arranged at the rear end of the trephine. According to the trephine, the first clamping groove is matched with the first elastic buckle of the clamping-in end, the clamping-in end can be conveniently disassembled and replaced, the trephine is suitable for different patients to use by replacing the clamping-in ends with different clamping-in angles, and the trephine is matched with the second elastic buckle of the sawtooth end through the second clamping groove, so that the sawtooth end can be conveniently disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a minimally invasive tool for opening a window and fixing a sleeve at the junction of a spinous process base and a vertebral plate. Background Art

[0002] The minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the vertebral lamina is an important tool in intervertebral disc surgery. For the existing minimally invasive tools for foramina formation, most of the bottom ends of the expanders and strippers are in a pointed shape. This structure causes severe pain when it comes into contact with the human body, and it is easy to cause damage to the patient's bones by the pointed-end-shaped expander and stripper, which is not conducive to medical staff to treat the patient.

[0003] However, for rare patients with completely closed intervertebral lamina space, the front end insertion part of the cannula needs to be adjusted to an inclination of 130 degrees before it can be inserted. The angle of the front end insertion part of the traditional cannula is fixed, which is inconvenient to use and difficult to operate. In addition, the front end saw teeth of the matching ring saw have fixed specifications and cannot be replaced according to needs, which has great limitations in use. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above-mentioned problems and / or the problems existing in the use of a minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the lamina, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the vertebral plate. The first card slot cooperates with the first elastic card buckle of the card-in end, so that the card-in end can be easily disassembled and replaced. The card-in end with different card-in angles can be replaced to adapt to different patients. The second card slot cooperates with the second elastic card buckle of the sawtooth end of the ring saw, so that the sawtooth end can be easily disassembled and assembled, and sawtooth ends of different specifications can be selected for installation and use. The bone cutter can be used to clean the broken bones ground inside the ring saw and extract them using the eccentric channel.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A minimally invasive tool for opening a window and fixing a sleeve at the junction of the spinous process base and the vertebral plate, comprising:

[0009] A sleeve, wherein a snap-in end is provided at the front end of the sleeve, a first snap-in slot is provided at the side wall of the sleeve, a first elastic snap-in buckle matched with the first snap-in slot is provided at the side wall of the snap-in end, and a handle is provided at the rear end of the sleeve;

[0010] A ring saw is extended into the sleeve, a sawtooth end is arranged at the front end of the ring saw, a second slot is arranged at the side wall of the ring saw, a second elastic buckle matching with the second slot is arranged at the side wall of the sawtooth end, and a handwheel is arranged at the rear end of the ring saw.

[0011] As a preferred solution of the minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the vertebral plate described in the utility model, the side wall of the handle is provided with a positioning hole, and the side wall of the handle is provided with a catheter connected to the positioning hole.

[0012] As a preferred solution of the minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the vertebral plate described in the utility model, the catheter is movably equipped with a positioning needle, and a limiting rod is provided at the rear end of the positioning needle.

[0013] As a preferred solution of the minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the vertebral lamina described in the utility model, the side wall of the handle is provided with a first through hole coaxial with the sleeve, and the side wall of the handwheel is provided with a second through hole coaxial with the ring saw.

[0014] As a preferred solution of the minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the vertebral plate described in the utility model, the ring saw is movably matched with a bone knife, the outer side of the bone knife is provided with anti-slip grooves, and the side wall of the bone knife is provided with an eccentric channel.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the vertebral plate cooperates with the first elastic buckle of the clip-in end through the first clip groove, so that the clip-in end can be easily disassembled and replaced. The clip-in end with different clip-in angles can be replaced to adapt to different patients. The ring saw cooperates with the second elastic buckle of the saw tooth end through the second clip groove, so that the saw tooth end can be easily disassembled and assembled. Saw tooth ends of different specifications can be selected for installation and use. The bone cutter can be used to clean the broken bones ground off inside the ring saw and extract them using the eccentric channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of a minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the lamina of the utility model;

[0018] Figure 2 It is a first-view schematic diagram of the exploded structure of a minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the lamina of the utility model;

[0019] Figure 3 It is a second-angle schematic diagram of the exploded structure of a minimally invasive tool for opening a window and fixing a sleeve at the junction of the spinous process base and the vertebral lamina of the utility model.

[0020] 100, sleeve; 110, snap-in end; 111, first snap-in slot; 101, first through hole; 120, handle; 121, positioning hole; 130, catheter; 200, ring saw; 201, second through hole; 210, sawtooth end; 211, second snap-in slot; 220, hand wheel; 300, positioning pin; 310, limit rod; 400, bone knife; 410, eccentric channel; 420, anti-slip pattern. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged at a general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The utility model provides a minimally invasive tool for opening a window and fixing a sleeve at the junction of the spinous process base and the vertebral plate. The first clamping groove cooperates with the first elastic clamping buckle of the clamping end, so that the clamping end can be easily disassembled and replaced. The clamping ends with different clamping angles can be replaced to adapt to different patients. The ring saw cooperates with the second elastic clamping buckle of the saw tooth end through the second clamping groove, so that the saw tooth end can be easily disassembled and assembled. The saw tooth ends of different specifications can be selected for installation and use. The bone cutter can be used to clean the broken bones ground inside the ring saw and draw them out using an eccentric channel.

[0025] Figure 1-Figure 3 The structure diagram of the utility model is a minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the lamina. Figure 1-Figure 3The present embodiment is a minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the vertebral plate, and its main body includes a sleeve 100 and a ring saw 200.

[0026] The sleeve 100 cooperates with the first elastic buckle of the card-in end 110 through the first card slot 111, which facilitates the disassembly and replacement of the card-in end 110. The card-in end 110 with different card-in angles can be replaced to adapt to different patients. Specifically, the front end of the sleeve 100 is provided with the card-in end 110, the side wall of the sleeve 100 is provided with the first card slot 111, the side wall of the card-in end 110 is provided with a first elastic buckle that cooperates with the first card slot 111, and the rear end of the sleeve 100 is provided with The handle 120, in this embodiment, is provided with a positioning hole 121 on the side wall of the handle 120, is provided with a conduit 130 in communication with the positioning hole 121 on the side wall of the handle 120, is movably matched with a positioning pin 300, is provided with a limiting rod 310 at the rear end of the positioning pin 300, is provided with a first through hole 101 coaxial with the sleeve 100 on the side wall of the handle 120, and is provided with a second through hole 201 coaxial with the ring saw 200 on the side wall of the hand wheel 220;

[0027] The ring saw 200 cooperates with the second elastic buckle of the sawtooth end 210 through the second card slot 211, which is convenient for disassembly and assembly of the sawtooth end 210. The sawtooth ends 210 of different specifications can be selected for installation and use. The broken bones ground inside the ring saw 200 can be cleaned through the bone knife 400 and pulled out using the eccentric channel 410. Specifically, the ring saw 200 extends into the sleeve 100, and the front end of the ring saw 200 is provided with a sawtooth end 210, and the side wall of the ring saw 200 is provided with a second card slot 211. The side wall of the sawtooth end 210 is provided with a second elastic buckle that cooperates with the second card slot 211, and the rear end of the ring saw 200 is provided with a hand. In this embodiment, the ring saw 200 is movably matched with the bone knife 400, the outer side of the bone knife 400 is provided with anti-slip grooves 420, and the side wall of the bone knife 400 is provided with an eccentric channel 410.

[0028] Combination Figure 1-Figure 3 , a minimally invasive tool for opening a window and fixing a sleeve at the junction of the base of the spinous process and the vertebral plate in this embodiment, the specific use process is as follows, the sleeve 100 cooperates with the first elastic buckle of the snap-in end 110 through the first snap-in groove 111, which is convenient for disassembly and replacement of the snap-in end 110, and the snap-in end 110 with different snap-in angles is replaced to adapt to different patients, the ring saw 200 cooperates with the second elastic buckle of the sawtooth end 210 through the second snap-in groove 211, which is convenient for disassembly and assembly of the sawtooth end 210, and sawtooth ends 210 of different specifications are selected for installation and use, and the bone cutter 400 can be used to clean the broken bones ground inside the ring saw 200 and extract them using the eccentric channel 410.

[0029] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A minimally invasive tool for opening a window and fixing a cannula at the junction of the spinous process base and the lamina, characterized in that: include: A sleeve (100), wherein a snap-in end (110) is provided at the front end of the sleeve (100), a first snap-in groove (111) is provided on the side wall of the sleeve (100), a first elastic snap-in buckle matched with the first snap-in groove (111) is provided on the side wall of the snap-in end (110), and a handle (120) is provided at the rear end of the sleeve (100); A ring saw (200) is provided, wherein the ring saw (200) extends into the interior of a sleeve (100), a sawtooth end (210) is provided at the front end of the ring saw (200), a second clamping groove (211) is provided on the side wall of the ring saw (200), a second elastic clamping buckle matched with the second clamping groove (211) is provided on the side wall of the sawtooth end (210), and a hand wheel (220) is provided at the rear end of the ring saw (200).

2. A minimally invasive tool for opening a window and fixing a sleeve at the junction of the spinous process base and the lamina according to claim 1, characterized in that: The side wall of the handle (120) is provided with a positioning hole (121), and the side wall of the handle (120) is provided with a conduit (130) communicating with the positioning hole (121).

3. A minimally invasive tool for opening a window and fixing a sleeve at the junction of the spinous process base and the lamina according to claim 2, characterized in that: The catheter (130) is movably matched with a positioning needle (300), and a limiting rod (310) is provided at the rear end of the positioning needle (300).

4. A minimally invasive tool for opening a window and fixing a sleeve at the junction of the spinous process base and the lamina according to claim 3, characterized in that: The side wall of the handle (120) is provided with a first through hole (101) coaxial with the sleeve (100), and the side wall of the hand wheel (220) is provided with a second through hole (201) coaxial with the ring saw (200).

5. A minimally invasive tool for opening a window and fixing a sleeve at the junction of the spinous process base and the lamina according to claim 4, characterized in that: The ring saw (200) is movably matched with a bone cutter (400), the outer side of the bone cutter (400) is provided with anti-slip grooves (420), and the side wall of the bone cutter (400) is provided with an eccentric channel (410).

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