CN103126762B - Through the pressurization hip screw guides that skin inserts - Google Patents

Abstract

The invention relates to a pressurized hip screw guide inserted through the skin, which belongs to the technical field of medical instruments. The guide includes a grip rod, a femoral rod and a guide catheter. One end of the femoral rod is fixedly connected to the grip rod, and the other end of the femoral rod is a sharp end. The threaded end of the conduit is fixedly connected with the universal screw hole. When using this guide for compression hip screw implantation, the sharp end of the femoral abutment rod can be used to insert it from the skin, and then the guide catheter is inserted and screwed to the universal screw hole for positioning, and then the compression The hip screw is inserted into the guiding catheter to realize the implantation of the compression hip screw. The incision produced in this surgical procedure is extremely small, which can realize minimally invasive surgery and shorten the healing time of the patient. The implantation direction and angle of the hip screw can be adjusted, and the guiding position To be precise, the overall structure of the guide of the present invention is simple, the cost is low, and the application range is relatively wide.

Description

Percutaneously Inserted Compression Hip Screw Guide

technical field

The invention relates to the technical field of medical devices, in particular to the technical field of compression hip screw guides, in particular to a percutaneously inserted compression hip screw guide.

Background technique

Currently, the compression hip screw (DHS) is a commonly used surgical instrument for the treatment of stable intertrochanteric fractures. The key step in the operation for the treatment of stable intertrochanteric fractures is to determine the implantation position of the hip screw. The conventional method is to use the guide 8 shown in FIG. 1 to control the implantation direction and angle of the hip screw 9 . Use of this guide requires a larger incision that is sufficiently exposed to allow the guide to be placed in a satisfactory position. Although this can accurately control the implantation direction and angle of the hip screw, it is difficult to meet the requirements of minimally invasive treatment in the current operation, and the healing time required by the patient is longer.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned shortcoming in the prior art, provide a kind of incision that can reduce the required otch of placing guide device in the operation, realize the operation of minimally invasive stable intertrochanteric fracture, shorten the patient's healing time, and The implantation direction and angle of the hip screw can be adjusted, the guide position is accurate, the overall structure is simple, the cost is low, and the percutaneously inserted pressurized hip screw guider has a wide range of applications.

In order to achieve the above-mentioned purpose, the percutaneously inserted compression hip screw guide of the present invention has the following structure:

The percutaneously inserted compression hip screw guide includes a grip rod, a femoral rod and a guide guide tube, one end of the femoral rod is fixedly connected to one end of the grip rod, and the other end of the femoral rod It is a sharp end, and a universal screw hole is provided on the femoral rod close to the end connected with the grip rod, and one end of the guide catheter is threaded, and the threaded end of the guide catheter is connected to the The universal screw hole is fixedly connected.

In the percutaneously inserted pressurized hip screw guide, the included angle between the femoral abutment rod and the grip rod ranges from 85 degrees to 95 degrees.

In the percutaneously inserted pressurized hip screw guide, the included angle between the femoral abutment bar and the holding bar is 90 degrees.

In the percutaneously inserted compression hip screw guide, the length of the sharp end of the femoral abutment rod ranges from 0.5 cm to 1.5 cm.

In the percutaneously inserted compression hip screw guide, the length of the sharp end of the femoral abutment rod is 1 cm.

In the percutaneously inserted compression hip screw guide, the guide also includes a positioning rod, one end of the positioning rod is fixed at a position between the two ends of the holding rod, and the positioning rod A through hole is opened, and the guide tube is passed through the through hole.

In the percutaneously inserted compression hip screw guide, the positioning rod is parallel to the femoral abutment rod.

In the percutaneously inserted compression hip screw guide, the included angle between the guide catheter pierced in the through hole and the femoral rod is a variable angle, and the variable clip The angle ranges from 120 degrees to 140 degrees.

In the percutaneously inserted compression hip screw guide, the through hole is a rectangular through hole along the length direction of the positioning rod.

In the percutaneously inserted compression hip screw guide, the rectangular through hole is marked with an indicating scale for marking the variable included angle.

The percutaneously inserted compression hip screw guide of the invention is adopted, which includes a grip bar, a femoral bar and a guide catheter, one end of the femoral bar is fixedly connected to one end of the grip bar, and the The other end of the femoral rod is a sharp end, and a universal screw hole is arranged on the femoral rod near the end connected with the grip rod, and one end of the guide guide tube has threads, and the guide guide tube has threads One end is fixedly connected with the said universal screw hole. Therefore, when using this guide for compression hip screw implantation, the sharp end of the femoral abutment rod can be used to insert it through the skin and against the femur, and then the guide catheter can be inserted and threaded to the universal joint. The screw hole is positioned, and then the compression hip screw can be inserted into the guide catheter to realize the implantation of the compression hip screw. The hip screw implantation direction and angle of the device can be adjusted, and the guiding position is accurate. The overall structure of the percutaneously inserted pressurized hip screw guide of the present invention is simple, the cost is low, and the application range is relatively wide.

Description of drawings

Fig. 1 is a schematic structural view of a compression hip screw guide in the prior art.

Fig. 2 is a schematic structural view of the percutaneously inserted compression hip screw guide of the present invention.

3 is a schematic diagram of a positioning rod in the percutaneously inserted compression hip screw guide of the present invention.

Detailed ways

In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

Please refer to FIG. 2 , which is a schematic structural view of the percutaneously inserted compression hip screw guide of the present invention.

In one embodiment, the percutaneously inserted compression hip screw guide includes a grip bar 2 , a femoral abutment bar 1 and a guide catheter 3 . One end of the femoral abutment rod 1 is fixedly connected to one end of the grip rod 2, and the other end of the femoral abutment rod 1 is a sharp end 11. A universal screw hole 12 is provided at one end, and one end of the guide conduit 3 has threads, and one end of the guide conduit 3 with threads is fixedly connected with the universal screw hole 12 . The angle range of the angle between the femoral abutment rod 1 and the grip rod 2 is 85 degrees to 95 degrees, preferably 90 degrees. The length of the sharp end 11 of the femoral stem 1 ranges from 0.5 cm to 1.5 cm, preferably 1 cm.

In a more preferred embodiment, the guide also includes a positioning rod 4, one end of the positioning rod 4 is fixed at a position between the two ends of the handle bar 2, and the positioning rod 4 A through hole 41 is opened, and the guide tube 3 is passed through the through hole 41 .

In a further preferred embodiment, the positioning rod 4 is parallel to the femoral abutment rod 1; The included angle α is a variable included angle, and the range of said variable included angle is 120° to 140°.

In a more preferred embodiment, as shown in FIG. 3 , the through hole 41 is a rectangular through hole along the length direction of the positioning rod 4 . The said rectangular through hole 41 is marked with an indicating scale 42 for marking said variable included angle.

In practical application, the femoral rod 1 of the guide of the present invention is close to the bone surface and is fixedly connected with the grip rod 2 . There is an acute angle design 11 in the front 1cm of the femoral rod 1, which is convenient for percutaneous insertion. The universal threaded joint 12 can be connected with the guide catheter 3 and can move up and down to meet the requirement of 120-140 degrees to adjust the implantation of the guide needle. The grip bar 2 is fixedly connected with the femoral abutment bar 1 and the positioning bar 4 respectively. The positioning rod 4 has a hollow 41 for the insertion of the guiding catheter 3 . There is also a scale 42 on the positioning rod 4, which can adjust the angle of implanting the guide needle according to the neck-shaft angle of different patients, and the adjustment range is 120-140 degrees. The guide catheter 3 is hollow and can be inserted with a guide pin. It is threadedly connected with the femoral rod 1. When the main body of the guide is inserted close to the bone surface, the guide catheter 3 is then inserted for guidance.

The advantages of the guide of the present invention are:

1: Currently the only guide for percutaneous insertion.

2: Small incision, meeting the requirements of minimally invasive surgery.

3: The guide hole and the main body are detachable.

4: Adjustable guide hole angle design.

5: The front of the guide is designed with an acute angle, which is convenient for percutaneous insertion.

The percutaneously inserted compression hip screw guide of the invention is adopted, which includes a grip bar, a femoral bar and a guide catheter, one end of the femoral bar is fixedly connected to one end of the grip bar, and the The other end of the femoral rod is a sharp end, and a universal screw hole is arranged on the femoral rod near the end connected with the grip rod, and one end of the guide guide tube has threads, and the guide guide tube has threads One end is fixedly connected with the said universal screw hole. Therefore, when using this guide for compression hip screw implantation, the sharp end of the femoral abutment rod can be used to insert it through the skin and against the femur, and then the guide catheter can be inserted and threaded to the universal joint. The screw hole is positioned, and then the compression hip screw can be inserted into the guide catheter to realize the implantation of the compression hip screw. The hip screw implantation direction and angle of the device can be adjusted, and the guiding position is accurate. The overall structure of the percutaneously inserted pressurized hip screw guide of the present invention is simple, the cost is low, and the application range is relatively wide.

In this specification, the invention has been described with reference to specific embodiments thereof. However, it is obvious that various modifications and changes can be made without departing from the spirit and scope of the invention. Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims (9)

1. A percutaneously inserted compression hip screw guide, characterized in that, said guide comprises a grip bar, a femoral bar and a guide catheter, and one end of said femoral bar is fixedly connected to said grip One end of the rod, the other end of the femoral rod is a sharp end, the femoral rod is provided with a universal screw hole near the end connected to the grip rod, and one end of the guide catheter is threaded, The threaded end of the guide catheter is fixedly connected with the universal screw hole; the length of the sharp end of the femoral rod is in the range of 0.5 cm to 1.5 cm. 2 . The percutaneously inserted compression hip screw guide according to claim 1 , wherein the angle between the femoral abutment rod and the grip rod ranges from 85 degrees to 95 degrees. 3 . 3. The percutaneously inserted compression hip screw guide according to claim 2, wherein the angle between the femoral abutment rod and the grip rod is 90 degrees. 4. The percutaneously inserted compression hip screw guide according to claim 3, wherein the length of the sharp end of the femoral abutment rod is 1 cm. 5. The percutaneously inserted compression hip screw guide according to any one of claims 1 to 4, wherein the guide further comprises a positioning rod, and one end of the positioning rod is fixed to the The position between the two ends of the holding rod, the positioning rod is provided with a through hole, and the guide tube is penetrated in the through hole. 6. The percutaneously inserted compression hip screw guide according to claim 5, wherein the positioning rod is parallel to the femoral abutment rod. 7. The percutaneously inserted compression hip screw guide according to claim 6, characterized in that, the included angle between the guide catheter penetrated in the through hole and the femoral rod is Variable angle, the range of the variable angle is 120 degrees to 140 degrees. 8 . The percutaneously inserted compression hip screw guide according to claim 7 , wherein the through hole is a rectangular through hole along the length direction of the positioning rod. 9. The percutaneously inserted compression hip screw guide according to claim 8, wherein said rectangular through hole is marked with an indicating scale for marking said variable included angle.