CN211094468U - Meniscus hook sword - Google Patents

Abstract

The utility model provides a meniscus bush-hook belongs to medical equipment technical field, include: the cutter body comprises a cutter handle and a hook-shaped cutter head connected to the cutter handle, the fixed sleeve is arranged on the cutter handle, the movable protective piece is slidably arranged on the cutter handle, and the end part of the movable protective piece covers the hook-shaped cutter head. The utility model has the advantages that: is suitable for cutting off meniscus, is convenient to control and can not hurt healthy tissues by mistake.

Description

Meniscus hook sword

Technical Field

The utility model belongs to the technical field of medical instrument, a meniscus bush-hook is related to.

Background

The meniscus is fibrocartilage between the tibial plateau and the articular surface of the femoral condyle, is thick at the outer edge, is attached to the joint capsule, is thin and sharp at the middle, is isolated from the joint cavity, and has a triangular section. Its upper surface is slightly recessed, and its lower surface is relatively flat. The meniscus is divided into a medial meniscus, which is C-shaped, and a lateral meniscus, which is O-shaped. The outer edge of the meniscus has blood flow, while the inner edge does not. The function of the meniscus is to stabilize the knee joint, distribute the load force of the knee joint and promote the nutrition in the joint. Menisci play a very important role in the movement of the knee joint, and thus meniscal injuries are also very common. Meniscal damage is typically exercise-related damage, as well as senile abrasions; another type of injury that is likely to occur is a congenital deformity of the meniscus, i.e., a disc-like meniscus, which is a meniscus that is normally disc-like, and which is larger and thicker than a normal meniscus and is prone to tearing. Treatment of meniscal lesions as much as possible under arthroscopy with excision of the tear site or meniscal suturing. The inner 2/3 of the meniscus is not blood-born and usually requires excision when damaged; disc meniscal surgery attempts to restore normal morphology, and in severe cases, resection or shaping is required. The excision or the formation of meniscus under arthroscope has high requirements on instruments, and blue forceps or meniscus knives and the like used clinically at present have inconvenience of different degrees.

For example, a chinese patent application No. 201810931785.2 discloses a meniscal cutting burr comprising a hand-held bracket, a connecting rod, a cutter head and a first adjustment knob, wherein: the connecting rod is rotationally connected with the handheld bracket; the cutter head is arranged at the end part of the connecting rod component; the first adjusting knob is sleeved outside the connecting rod and used for driving the connecting rod to rotate relative to the handheld support.

However, the shape of the cutting knife head is not suitable for cutting the meniscus, so that the cutting knife is troublesome in actual cutting, and if the hook-knife-shaped cutting knife head is used, the cutting knife head can be beneficial to cutting the damaged meniscus, so that the meniscus hook knife suitable for cutting the meniscus is needed at present, and the operation and the control are convenient, so that healthy tissues can not be accidentally injured.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that prior art exists, provide a meniscus bush-hook.

The purpose of the utility model can be realized by the following technical proposal: a meniscal hook knife comprising: the cutter body comprises a cutter handle and a hook-shaped cutter head connected to the cutter handle, the fixed sleeve is arranged on the cutter handle, the movable protective piece is slidably arranged on the cutter handle, and the end part of the movable protective piece covers the hook-shaped cutter head.

Preferably, a sliding cavity is formed between the fixed sleeve and the tool handle, and the movable protection piece is movably arranged in the sliding cavity.

Preferably, a knife cover is arranged at the end part of the movable protection piece, and when the movable protection piece slides along the sliding cavity, the knife cover covers the hook-shaped knife head.

Preferably, a stroke groove is formed in the fixed sleeve, a push block is fixedly arranged on the movable protection member, the push block is movably arranged in the stroke groove, and the movable protection member moves towards the hook-shaped tool bit or retracts into the sliding cavity when the push block is pushed.

Preferably, the movable protector is a pipe sleeve-shaped structure, and the sliding cavity is a pipe sleeve-shaped cavity structure with the same shape as the movable protector.

Preferably, the movable protection member comprises a sleeve body and a rod body, the knife cover and the rod body are respectively connected to the front end and the rear end of the sleeve body, the sleeve body is sleeved on the knife handle, and the rod body penetrates through the sliding cavity.

Preferably, the push block is arranged on the rod body.

Preferably, the hook-shaped cutter head is provided with an arc-shaped cutter point, an accommodating groove is formed in the cutter cover, and the cutter point is located in the accommodating groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. is suitable for cutting off meniscus, is convenient to control and can not hurt healthy tissues by mistake.

2. The stroke of its removal of movable protection piece is exactly the length of stroke groove in fact, and when pushing forward the ejector pad, the ejector pad moves along the stroke groove to make movable protection piece remove forward from the sliding cavity, when the ejector pad conflicted the front end in stroke groove, the sword cover just in time covers hook-shaped tool bit, and the use only needs to promote the ejector pad like this, just can withdraw sliding protection piece to the sliding cavity, perhaps covers hook-shaped tool bit with the sword cover.

Drawings

Fig. 1 is a schematic structural view of the meniscus hook knife of the present invention.

Fig. 2 is a schematic view of the working state of the meniscal hook knife of the present invention.

Fig. 3 is a schematic view of the connection relationship between the sleeve and the rod of the present invention.

In the figure, 100, a cutter body; 110. a knife handle; 120. a hook-shaped tool bit; 130. a blade point; 200. fixing a sleeve; 210. a stroke slot; 300. a movable protector; 310. a knife cover; 320. a push block; 330. a sleeve body; 340. a rod body; 400. a sliding cavity.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, a meniscal hook comprises: the cutter comprises a cutter body 100, a fixing sleeve 200 and a movable protection member 300, wherein the cutter body 100 comprises a cutter handle 110 and a hook-shaped cutter head 120 connected to the cutter handle 110, the fixing sleeve 200 is arranged on the cutter handle 110, the movable protection member 300 is slidably arranged on the cutter handle 110, and the end part of the movable protection member 300 covers the hook-shaped cutter head 120.

Knee joint meniscus injury is a common and frequently encountered clinical disease. Meniscal surgery is intended to relieve symptoms and maximize recovery of function. The simplest and most convenient method for relieving symptoms is that the meniscal part is removed most simply and effectively, and the application is the widest, so that at present, when meniscus operation is performed, a cutter is needed to remove the damaged part of the meniscus, and when a common scalpel is used for cutting the meniscus, the effect is poor, the operation is inconvenient, and healthy tissues are easily injured by mistake.

Therefore, in the present embodiment, firstly, a cutter with a hook-shaped cutting head is provided, and due to the hook-shaped cutting head 120, the damaged tissue can be cut off conveniently in the actual operation process, and besides the shape of the hook-shaped cutting head 120 is beneficial to cutting off the damaged tissue, the cutting edge of the hook-shaped cutting head 120 can be protected, so that the hook-shaped cutting head can be prevented from cutting other healthy tissues by mistake in the operation process.

Preferably, in the whole structure, the fixing sleeve 200 is actually the housing structure of the handle 110, the user holds the fixing sleeve 200, the movable protection member 300 is disposed on the handle 110 and can move along the handle 110, the end of the movable protection member 300 covers the hook-shaped cutting head 120, so that the hook-shaped cutting head 120 cannot perform cutting, and when cutting is required, the movable protection member 300 moves towards the handle 110, so that the movable protection member 300 can be far away from the hook-shaped cutting head 120, so that the hook-shaped cutting head 120 can perform normal cutting function, and after the cutting is finished, the movable protection member 300 is pushed, so that the movable protection member 300 covers the hook-shaped cutting head 120 again, which is convenient for operation and control, and does not injure healthy tissues by mistake.

As shown in fig. 1 and 2, in the above embodiment, a sliding cavity 400 is formed between the fixing sleeve 200 and the tool shank 110, and the movable protection member 300 is movably disposed in the sliding cavity 400.

Preferably, there is a gap between the fixed sleeve 200 and the tool holder 110, the gap forming a sliding cavity 400, and the end of the movable protector 300 is located in the sliding cavity 400, that is, the movable protector 300 can be retracted into the sliding cavity 400, so that the end of the movable protector 300 is separated from the hook bit 120, and therefore the entire movable cavity can also serve to accommodate the movable protector 300, thereby facilitating the adjustment of the movable protector 300.

As shown in fig. 1 and 2, a knife cover 310 is provided at an end of the movable protector 300, and the knife cover 310 covers the hook-shaped tool bit 120 when the movable protector 300 slides along the sliding cavity 400.

It should be noted here that when the knife cover 310 moves to the hook-shaped knife head 120 and covers the hook-shaped knife head 120, the hook-shaped knife head 120 cannot cut the tissue, and when the knife cover 310 retreats to expose the hook-shaped knife head 120, the tissue can be cut, so that whether to cut or not can be selected according to actual needs, and the normal tissue can be prevented from being accidentally injured.

As shown in fig. 1 and 2, the fixed sleeve 200 is provided with a stroke groove 210, the movable protector 300 is fixedly provided with a push block 320, the push block 320 is movably disposed in the stroke groove 210, and when the push block 320 is pushed, the movable protector 300 moves towards the hook-shaped tool bit 120 or retracts into the sliding cavity 400.

Preferably, the stroke groove 210 is a strip groove for the sliding of the pushing block 320, which can limit the position of the movable protection member 300 and facilitate the adjustment of the movable protection member 300, the moving stroke of the movable protection member 300 is the length of the stroke groove 210, when the pushing block 320 is pushed forward, the pushing block 320 moves along the stroke groove 210, so that the movable protection member 300 moves forward from the sliding cavity 400, when the pushing block 320 abuts against the front end of the stroke groove 210, the knife cover 310 just covers the hook-shaped knife head 120, which facilitates the actual operation, and only the pushing block 320 needs to be pushed to retract the sliding protection member into the sliding cavity 400 or cover the knife cover 310 on the hook-shaped knife head 120.

As shown in fig. 1 and 2, the movable protector 300 has a pipe sleeve-shaped structure, and the sliding cavity 400 has a pipe sleeve-shaped cavity structure having the same shape as the movable protector 300.

Preferably, the movable protection member 300 may have a plurality of shapes or structures, and only the movable effect needs to be achieved, in this embodiment, the movable protection member 300 is provided with a pipe sleeve-shaped structure, which is sleeved on the tool shank 110 and can slide into the sliding cavity 400 with the same shape, which is beneficial to actual operation.

As shown in fig. 3, the movable protection member 300 includes a sheath 330 and a rod 340, the sheath 310 and the rod 340 are respectively connected to the front end and the rear end of the sheath 330, the sheath 330 is sleeved on the tool holder 110, and the rod 340 is inserted into the sliding cavity 400.

Preferably, the movable protection member 300 may have a plurality of shapes or structures, and only the movable effect needs to be achieved, in this embodiment, the movable protection member 300 may be configured as a sleeve 330 and a rod 340, wherein the rod 340 is disposed at the rear end of the sleeve 330, the knife cover 310 is disposed at the front end of the sleeve 330, the sleeve 330 is a ring-shaped structure, which is sleeved on the knife handle 110, and the rod 340 can penetrate through the hole-shaped sliding cavity 400, so as to drive the knife cover 310 to move, which is a small structure.

It should be noted that a hollow groove structure may be further provided at the front end of the fixing sleeve, so that the knife cover 310 can be retracted into the hollow groove.

As shown in fig. 3, the pushing block 320 is disposed on the rod 340, and preferably, the pushing block 320 is disposed on the rod 340, which is convenient for driving the whole movable protection member 300 to move for use.

As shown in fig. 1 and 2, the hook-shaped tool bit 120 has an arc-shaped blade 130, and a receiving groove (not shown) is formed in the tool cover 310, and the blade 130 is located in the receiving groove.

Preferably, the blade housing 310 has a U-shaped configuration when viewed in cross-section due to the receiving slot, which just covers the blade 130 and prevents the blade 130 from cutting normal tissue.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (8)

1. A meniscal hook knife, comprising: the cutter body comprises a cutter handle and a hook-shaped cutter head connected to the cutter handle, the fixed sleeve is arranged on the cutter handle, the movable protective piece is slidably arranged on the cutter handle, and the end part of the movable protective piece covers the hook-shaped cutter head.

2. A meniscal hook as claimed in claim 1 wherein: a sliding cavity is formed between the fixed sleeve and the tool handle, and the movable protection piece is movably arranged in the sliding cavity.

3. A meniscal hook as claimed in claim 2 wherein: the end part of the movable protection piece is provided with a knife cover, and when the movable protection piece slides along the sliding cavity, the knife cover covers the hook-shaped knife head.

4. A meniscal hook as claimed in claim 3 wherein: the fixed sleeve is provided with a stroke groove, the movable protection piece is fixedly provided with a push block, the push block is movably arranged in the stroke groove, and when the push block is pushed, the movable protection piece moves towards the hook-shaped tool bit or retracts into the sliding cavity.

5. A meniscal hook knife according to claim 4 wherein: the movable protective piece is of a pipe sleeve-shaped structure, and the sliding cavity is of a pipe sleeve-shaped cavity structure with the same shape as the movable protective piece.

6. A meniscal hook knife according to claim 4 wherein: the movable protection piece comprises a sleeve body and a rod body, the knife cover and the rod body are respectively connected to the front end and the rear end of the sleeve body, the sleeve body is sleeved on the knife handle, and the rod body penetrates through the sliding cavity.

7. A meniscal hook as claimed in claim 6 wherein: the push block is arranged on the rod body.

8. A meniscal hook as claimed in claim 3 wherein: the hook-shaped cutter head is provided with an arc-shaped cutter point, an accommodating groove is formed in the cutter cover, and the cutter point is located in the accommodating groove.

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