CN212186656U

CN212186656U - Femoral head extraction device

Info

Publication number: CN212186656U
Application number: CN202020245943.1U
Authority: CN
Inventors: 郭洪章
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-12-22
Anticipated expiration: 2030-03-03

Abstract

The utility model provides a femoral head extraction device, belonging to the technical field of medical instruments; the femoral head taking-out device comprises a connecting rod, a conical threaded head is arranged at the bottom end of the connecting rod, the top end of the connecting rod is vertically connected with a handle, a cavity sliding groove which is communicated with the handle is formed in the middle axis of the connecting rod and the handle on the same side, and a slidable blade inserting piece is arranged in the cavity sliding groove. According to the scheme, the femoral head taking-out device is provided with the blade inserting piece capable of sliding along the cavity sliding groove, and after the conical threaded head drills into the femoral head, the blade inserting piece is embedded into the femoral head, so that the femoral head can be effectively prevented from slipping, the femoral head can be taken out smoothly, and the operation efficiency is improved.

Description

Femoral head extraction device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a femoral head extraction device.

Background

Currently, artificial hip replacement surgery is the most effective means for treating final stage of hip joint lesions. In hip joint replacement surgery, a diseased femoral head generally needs to be taken out, but due to the limitation of an operation wound and the fact that the femoral head is pulled by surrounding soft tissues and ligaments and the like, after a femoral neck is cut off in the surgery, the femoral head is difficult to take out, the surrounding soft tissues are easy to damage, and the femoral head needs to be taken out through a surgical instrument, namely a head taking device.

At present, a head extractor is generally designed into a handle with a screw head, the screw head is screwed into a femoral head by rotating the handle, and then the femoral head is extracted by twisting the handle. However, the friction force between the threaded head of the head extractor and the femoral head is not sufficient, so that the femoral head cannot be firmly held, the femoral head is prone to slipping, the femoral head cannot be smoothly extracted at one time, repeated operation is often needed to extract the femoral head, time and labor are wasted, and sometimes, even the peripheral soft tissues are damaged due to the fact that the extracting position of the head extractor is not good. Some head extractors are provided with hook claws, and the femoral head is tried to be locked by the aid of the hook claws, but the design is often complex in structure, so that the head extractor is blocked and cannot be used in the using process. In addition, the hook claw is designed to protrude outwards and is limited by a wound opening, so that the head taking device is difficult to probe into a human body, and the locking step is complicated, difficult to operate and difficult to master.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a femoral head remove device to solve current taking head ware when taking out the femoral head, the femoral head slippage appears easily, needs the repeated operation, and the taking head ware that is equipped with the claw of colluding probes into wound difficulty and the loaded down with trivial details problem of operating procedure.

In order to solve the technical problem, the utility model provides a following technical scheme:

the femoral head taking-out device comprises a connecting rod, wherein a conical threaded head is arranged at the bottom end of the connecting rod, the top end of the connecting rod is vertically connected with a handle, a cavity sliding groove which is communicated with each other is formed in the connecting rod and the handle on the same side of a central axis, and a slidable insert piece with a blade is arranged in the cavity sliding groove.

Wherein, the bottom of the blade inserting piece is provided with a tip, and the top is provided with a handle end.

Wherein, the handle end is located the handle top is including cylindric striking head and hand protector structure.

Wherein, the inserted sheet with the blade is flat, and a cutting edge is arranged at the tip.

The outer contour of the conical thread head is gradually reduced from top to bottom, and the lower end of the conical thread head is provided with a triangular tip.

Preferably, the handle is of a cylindrical structure, and two ends of the handle are provided with annular grooves.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:

in the scheme, the femoral head taking-out device is provided with the blade inserting piece which can slide along the cavity sliding groove, and after the conical threaded head drills into the femoral head, the blade inserting piece is embedded into the femoral head to play a role in preventing the femoral head from slipping, so that the femoral head can be taken out smoothly, and the operation efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of the femoral head extraction device of the present invention;

fig. 2 is a front view of the femoral head extraction device of the present invention;

fig. 3 is a side view of the femoral head extraction device of the present invention.

[ reference numerals ]

1. A handle;

2. a blade insert;

3. a connecting rod;

4. a tapered thread head.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-3, the embodiment of the utility model provides a femoral head extraction device, including connecting rod 3, the bottom of connecting rod 3 is equipped with tapered thread head 4, and the top is connected with handle 1 is perpendicular, forms T word structure connecting rod 3 with the cavity spout has been seted up on the positive axis of the T word structure that handle 1 formed, cavity spout upper end is open, and the lower extreme seals, be equipped with in the cavity spout and take sword inserted sheet 2, it can to take sword inserted sheet 2 slide from top to bottom in the cavity spout.

As shown in fig. 1, the blade insert 2 is flat, the bottom of the blade insert is provided with a tip, and the tip is provided with a cutting edge, so that the blade insert can conveniently penetrate into the femoral head; 2 tops of taking sword inserted sheet are equipped with the handle end, the handle end is located the top of handle 1, including cylindric striking head and hand protection structure, make things convenient for handheld and carry out the hammering.

The outer contour of the conical threaded head 4 is gradually reduced from top to bottom, self-tapping threads are arranged on the conical threaded head, the lower end of the conical threaded head is provided with a triangular tip, and the conical threaded head can effectively drill into a femoral head through rotation and can be firmly held.

As shown in fig. 2, the handle 1 has a cylindrical structure, and two ends of the handle are provided with annular grooves, so that an operator can conveniently hold the handle by hands to perform screwing.

The utility model provides a femoral head extraction device's use as follows:

1. after the femoral head is disconnected from the proximal end of the femur, an operator holds the handle 1, forcibly penetrates the conical threaded head 4 into the femoral head, and rotates the handle 1 clockwise to screw the conical threaded head 4 into the femoral head;

2. inserting the blade insert 2 into the cavity chute, forcibly knocking a cylindrical striking head at the handle end of the blade insert 2 by means of a tool such as an iron hammer and the like, and penetrating the tip end of the blade insert 2 into the femoral head so as to prevent the femoral head from slipping caused by insufficient friction force between the conical thread head 4 and the femoral head;

3. the handle 1 is held by hand, and the femoral head is taken out by pulling.

In the scheme, the femoral head extraction device is provided with the insert with the blade which can slide along the cavity sliding groove, and after the conical threaded head is drilled into the femoral head, the insert with the blade is embedded into the femoral head, so that the femoral head is prevented from slipping, the femoral head can be conveniently and smoothly extracted, and the operation efficiency is improved; the femoral head taking-out device is simple in structure, convenient to operate, free of limitation of a wound and high in practicability.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A femoral head extraction device comprises a connecting rod, wherein a conical threaded head is arranged at the bottom end of the connecting rod, and the top end of the connecting rod is vertically connected with a handle; the cutting tool is characterized in that the connecting rod and the handle are provided with a through cavity sliding groove on the central axis of the same side, and a slidable blade inserting piece is arranged in the cavity sliding groove.

2. The femoral head extraction device of claim 1, wherein the bladed insert has a tip at a bottom portion and a handle end at a top portion.

3. The femoral head extraction device of claim 2, wherein the handle end is located above the handle and comprises a cylindrical striking head and a hand guard structure.

4. The femoral head extraction device of claim 2, wherein the bladed insert is flat with a cutting edge at the tip.

5. The femoral head extraction device according to claim 1, wherein the tapered thread head has an outer contour gradually decreasing from top to bottom, and a triangular tip is provided at the lower end.

6. The femoral head extraction device of claim 1, wherein the handle is cylindrical and has annular grooves at both ends.