CN209864026U

CN209864026U - PFNA internal fixation surgical tool

Info

Publication number: CN209864026U
Application number: CN201920373659.XU
Authority: CN
Inventors: 曹治东; 李兴超; 何苗; 晁瑞; 姚海; 丁虹
Original assignee: Chongqing Fourth People's Hospital
Current assignee: Chongqing Fourth People's Hospital
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2019-12-31
Anticipated expiration: 2029-03-22

Abstract

The utility model relates to the field of medical equipment, especially, relate to a PFNA internal fixation instrument for operation. The tool for PFNA internal fixation surgery comprises a PFNA main nail, a PFNA main nail tail cap and a tail cap screwing sleeve, wherein the PFNA main nail tail cap is screwed into the sleeve through the tail cap and is in threaded connection with the PFNA main nail. The outer wall of the tail end of the PFNA main nail is provided with external threads, the tail end of the tail cap of the PFNA main nail is provided with a sealing end, and the tail part of the sealing end is provided with a cross groove. The tail cap screwing sleeve comprises a tail cap head, an extending part and a hollow pipe with a smooth inner wall, wherein the tail cap head and the extending part are both of a hollow structure, the hollow pipe is arranged at the top of the tail cap head, and the inner diameter of the hollow pipe and the inner diameter of the tail cap head are both the same as the inner diameter of the PFNA main nail. Compared with the prior art, the utility model, after penetrating the coxal bone with PFNA main nail, twist the sleeve through the tail cap and twist PFNA main nail tail cap into PFNA main nail end, the PFNA main nail tail cap of being convenient for twists, and it is long when shortening the operation, provides convenience for doctor's operation.

Description

PFNA internal fixation surgical tool

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a PFNA internal fixation instrument for operation.

Background

The most commonly used treatment scheme at present is minimally invasive reduction PFNA internal fixation, a PFNA main nail is needed in an operation, the PFNA main nail is designed to be hollow, the PFNA main nail enters a medullary cavity in the operation, a PFNA main nail tail cap is screwed into the tail end of the PFNA main nail after the subsequent operation is finished, the problem that the PFNA main nail tail cap is difficult to take out from the medullary cavity due to the fact that tissues grow into the PFNA main nail is solved, the problem that the operation time is prolonged due to the fact that the PFNA main nail tail cap is difficult to screw in due to the fact that the body position is limited and bones and soft tissues block in the operation, and meanwhile, the problems that the tail cap is easy to fall out, the tail bone of the main nail tail is difficult to grow into the secondary internal fixation and take out exist.

Disclosure of Invention

In view of the technical problem who exists among the prior art, the utility model provides a PFNA internal fixation instrument for operation, when PFNA internal fixation operation, quick accurate with PFNA main nail tail cap and PFNA main nail aim at and twist, reduced the time that the doctor twisted PFNA main nail tail cap.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows: the PFNA internal fixation surgical tool comprises a PFNA main nail, a PFNA main nail tail cap and a tail cap screwing sleeve, wherein the PFNA main nail tail cap is screwed into the sleeve through the tail cap and is in threaded connection with the PFNA main nail. The outer wall of the tail end of the PFNA main nail is provided with external threads, the tail end of the tail cap of the PFNA main nail is provided with a sealing end, and the tail part of the sealing end is provided with a cross groove. The tail cap screwing sleeve comprises a tail cap head, an extending part and a hollow tube with a smooth inner wall, wherein the tail cap head and the extending part are both of a hollow structure, the hollow tube is arranged at the top of the tail cap head, the inner diameter of the hollow tube and the inner diameter of the tail cap head are both the same as the inner diameter of the PFNA main nail, the extending part is sleeved on the outer wall of the tail cap head, and the inner wall of the extending part is provided with an internal thread for being in threaded connection with the PFNA main nail.

By adopting the technical scheme, the tool for PFNA internal fixation operation solves the problem that the main screw tail cap is difficult to be correctly screwed in due to limited body position and blocking of bones and soft tissues in the operation, and can accurately and quickly finish the fixation of the PFNA main screw tail cap by screwing the tail cap into the sleeve.

Further limiting, the top of the hollow pipe is provided with a conical throwing port, wherein the diameter of the top of the throwing port is larger than that of the bottom of the throwing port.

Further defined, the height of the hollow tube is 5 cm.

Further defined, the hollow tube and the tail cap head have an inner diameter of 9.4mm, 10mm or 11 mm.

Compared with the prior art, the utility model, after penetrating the PFNA main nail into the coxal bone, twist the sleeve through the tail cap and twist the end of PFNA main nail tail cap into PFNA main nail, the twist of PFNA main nail tail cap of being convenient for has shortened the operation and has long, provides convenience for doctor's operation.

Drawings

FIG. 1 is a schematic structural view of the PFNA internal fixation surgical tool of the present invention;

FIG. 2 is a cross-sectional view of the tail cap screwed into the sleeve of the PFNA internal fixation surgical tool of the present invention;

the corresponding labels in the figures are: the main nail comprises a 1-PFNA main nail, a 2-PFNA main nail tail cap, a 3-tail cap screwing sleeve, 11-external threads, 21-sealing end, 31-tail cap head, 32-hollow tube, 33-extension part, 321-throwing port and 331-internal threads.

Detailed Description

In order to make the technical solution of the present invention more comprehensible to those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.

The tool for PFNA internal fixation surgery shown in figures 1 and 2 comprises a PFNA main nail 1, a PFNA main nail tail cap 2 and a tail cap screwing sleeve 3, wherein the PFNA main nail tail cap 2 is in threaded connection with the PFNA main nail 1 through the tail cap screwing sleeve 3. The outer wall of the tail end of the PFNA main nail 1 is provided with an external thread 11, the tail end of the PFNA main nail tail cap 2 is provided with a sealing end 21, and the tail of the sealing end 21 is provided with a cross groove. The tail cap screwing sleeve 3 comprises a tail cap head 31, an extension part 33 and a hollow tube 32 with a smooth inner wall, wherein the tail cap head 31 and the extension part 33 are both of a hollow structure, the hollow tube 32 is arranged at the top of the tail cap head 31, the inner diameter of the hollow tube 32 and the inner diameter of the tail cap head 31 are both the same as the inner diameter of the PFNA main nail 1, the extension part 33 is sleeved on the outer wall of the tail cap head 31, and the inner wall of the extension part 33 is provided with an inner thread 331 for being in threaded connection with the PFNA main nail 1. The top of the hollow tube 32 is provided with a conical input port 321, wherein the diameter of the top of the input port 321 is larger than that of the bottom of the input port 321. The height of the hollow tube 32 is 5 cm. The internal diameter of the hollow tube 32 and the tail cap head 31 is 9.4mm, 10mm or 11 mm.

Before the utility model is used, firstly, the PFNA main nail 1 is nailed into the femur, then the tail cap is screwed into the extension part 33 of the sleeve 3 to be connected with the tail part thread of the PFNA main nail 1, and after the tail cap is screwed into the sleeve 3 to be sleeved on the tail part of the PFNA main nail 1, the PFNA main nail tail cap 2 is placed at the end part of the hollow tube 32 of the main nail tail cap screwed into the sleeve 3; the top of the tail cap screwing sleeve 3 is provided with a conical throwing port 321, so that the PFNA main nail tail cap 2 can be conveniently put into the hollow tube 32, the inner diameter of the PFNA main nail tail cap 2 and the inner diameter of the PFNA main nail 1 are the same, therefore, the PFNA main nail tail cap 2 cannot incline or deflect in the hollow tube 32, when the PFNA main nail tail cap 2 falls into the PFNA main nail 1 from the smooth inner wall of the hollow tube 32, a screwdriver extends into the tail cap screwing sleeve 3, the PFNA main nail tail cap 2 and the PFNA main nail 1 are screwed tightly, the connection of the PFNA main nail tail cap 2 and the NA PFNA main nail 1 is completed, and then the tail cap screwing sleeve 3 is screwed out from the tail of the PFNA main nail 1.

The above detailed description is made on the tool for PFNA internal fixation surgery provided by the present invention, and the description of the specific embodiment is only used to help understanding the method and the core idea of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

PFNA internal fixation surgical tool, characterized in that: the tail cap of the PFNA main nail is in threaded connection with the PFNA main nail through the tail cap screwing sleeve, wherein the outer wall of the tail end of the PFNA main nail is provided with an external thread, the tail end of the tail cap of the PFNA main nail is provided with a sealing end, and the tail part of the sealing end is provided with a cross groove; the tail cap screwing sleeve comprises a tail cap head, an extending part and a hollow tube with a smooth inner wall, wherein the tail cap head and the extending part are both of a hollow structure, the hollow tube is arranged at the top of the tail cap head, the inner diameter of the hollow tube and the inner diameter of the tail cap head are both the same as the inner diameter of the PFNA main nail, the extending part is sleeved on the outer wall of the tail cap head, and the inner wall of the extending part is provided with an internal thread for being in threaded connection with the PFNA main nail.
2. The PFNA internal fixation surgical tool of claim 1, wherein: the top of the hollow pipe is provided with a conical throwing port, wherein the diameter of the top of the throwing port is larger than that of the bottom of the throwing port.
3. The PFNA internal fixation surgical tool of claim 1, wherein: the height of the hollow tube is 5 cm.
4. The PFNA internal fixation surgical tool of claim 1, wherein: the inner diameters of the hollow tube and the tail cap head are 9.4mm, 10mm or 11 mm.