CN214966490U

CN214966490U - Intramedullary nail tail nail holding device

Info

Publication number: CN214966490U
Application number: CN202120580036.7U
Authority: CN
Inventors: 李正戎; 史春宝; 郭静; 王振国; 岳术同
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-12-03
Anticipated expiration: 2031-03-22

Abstract

The utility model relates to an intramedullary nail tail nail holding device, which comprises a hollow hexagonal wrench, a tail nail thread guide pin and a handle, wherein a central channel running through the whole hollow hexagonal wrench is axially arranged inside the hollow hexagonal wrench, and the central channel is used for placing the tail nail thread guide pin and combining the hollow hexagonal wrench and the tail nail thread guide pin together; the handle is sleeved outside the tail end of the hollow hexagonal wrench, is matched with the hollow hexagonal wrench and is used for being held by a hand when the tail nail is driven. The device combines hexagonal spanner and tail nail screw thread guide pin as an organic whole, compares with the apparatus of traditional intramedullary nail tail nail, has reduced the quantity of apparatus, and an apparatus can just satisfy the demand of operation completely, no longer need be equipped with other apparatus for the tail nail, and the operation is stable convenient, the operation in the art of being convenient for.

Description

Intramedullary nail tail nail holding device

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to intramedullary nail tail nail controlling device.

Background

Along with the development of science and technology, the femoral fracture treatment operation technology adopts the intramedullary nail to treat femoral fracture more and more widely, the intramedullary nail has unique advantages in the biological anatomical mechanical property, the stability of fracture broken end reduction is enhanced by the internal fixation mode, and a solid foundation is laid for the early rehabilitation of patients. In the operation, firstly, the main nail is implanted into a femoral medullary cavity, after the locking of the near-end spiral blade and the locking of the far-end locking nail are completed, in order to prevent soft tissues and bone from growing into the tail part of the main nail, the tail nail is screwed into the near end of the main nail, and finally, the whole operation is completed by suturing, and when the bone is healed to a certain degree, whether the intramedullary nail is taken out or not is considered. The in-process of implanting and taking out at the tail nail, need use the spanner and the drive spanner of controlling of tail nail, implant the tail nail in-process, place the tail nail with controlling the spanner earlier and place main nail near-end screw hole department, take out and control the spanner, use drive spanner again to twist into the tail nail main nail afterbody screw hole. In the tail nail taking-out process, the driving wrench is firstly used for unscrewing the tail nail, and then the holding wrench is used for taking out the tail nail from the body, so that the tail nail can be implanted and taken out.

In the operation of treating femoral fracture by intramedullary nail in the prior art, the operation instruments are various, a set of complete intramedullary nail operation instruments can be dozens or even hundreds of instruments, and an operator needs to replace a plurality of instruments in the operation, thereby not only increasing the operation steps of the operator, but also increasing the cost of manufacturers. When the intramedullary nail tail nail is implanted, the needed instruments comprise a driving spanner and a holding spanner, the holding spanner is used for placing the tail nail at the tail part of the main nail, and then the driving spanner is used for screwing the tail nail; use the drive spanner earlier when taking out the tail nail to unscrew the tail nail, reuse is held the spanner and is taken out extrasomatic, in addition, the instrument of taking out of tail nail still can be equipped with the guide pin of taking the hook of a tail nail, guarantees to use the guide pin of taking the hook to assist when holding down and can not taking out the tail nail and takes out, and the instrument of being equipped with for the tail nail has just reached threely this moment, has increased the quantity of instrument, has also increased the instrument cost, has more increased the operation of art person.

Novel content

The utility model aims to provide an intramedullary nail tail nail holding device, which solves the technical problem that how to only use one instrument to meet the requirement of tail nail implantation or extraction.

The utility model aims to solve the defects of the prior art and provide a holding device for the tail nail of the intramedullary nail, which comprises a hollow hexagonal wrench, a tail nail thread guide pin and a handle, wherein the front end of the hollow hexagonal wrench is hexagonal and is used for driving the tail nail to be screwed up and unscrewed; a central channel penetrating through the whole hollow hexagonal wrench is axially arranged inside the hollow hexagonal wrench, and the central channel is used for placing a tail screw thread guide pin and combining the hollow hexagonal wrench and the tail screw thread guide pin together; the front end of the tail nail threaded guide pin is provided with a threaded part which can be screwed into a threaded hole in the center of the tail nail to hold the tail nail; the rear end of the tail nail threaded guide pin is provided with a hexagonal column for an operator to manually drive a threaded part at the front end to be screwed into a threaded hole in the center of the tail nail; the handle is sleeved outside the tail end of the hollow hexagonal wrench, is matched with the hollow hexagonal wrench and is used for being held by a hand when the tail nail is driven.

A first locking threaded hole and a second locking threaded hole are formed in the outer peripheral wall of the tail end of the hollow hexagonal wrench, are perpendicular to the axial direction of the hollow hexagonal wrench, and extend to the central channel from the outer peripheral wall of the tail end of the hollow hexagonal wrench; the first locking threaded hole and the second locking threaded hole are used for allowing a first locking screw and a second locking screw to be inserted and screwed down respectively, so that the tail screw thread guide pin is fixed in the central channel, and the hollow hexagonal wrench and the tail screw thread guide pin are combined together.

The central axes of the first locking threaded hole and the second locking threaded hole are positioned on the same straight line.

The tail end of center channel is provided with the holding tank, and this holding tank is used for holding hexagonal column.

The handle center through hole is formed in the center of the handle along the axial direction of the handle, and the handle is sleeved outside the tail end of the hollow hexagonal wrench through the handle center through hole.

The outer peripheral wall of the handle is provided with lower concave parts and raised ribs which are alternately arranged at intervals.

Advantageous effects

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

intramedullary nail tail nail controlling device combine hexagon spanner and tail nail screw thread guide pin as an organic whole, compare with the apparatus of traditional intramedullary nail tail nail, the quantity of apparatus has been reduced, an instrument can just satisfy the demand of operation completely, no longer need be equipped with other apparatus for the tail nail, and the operation is stable convenient, the art person places the hexagon behind tail nail hexagonal hole, only need twist into tail nail central thread hole with the screw thread guide pin, can be firm control the tail nail, owing to be threaded connection, there is the restriction of hexagon spanner, the tail nail can not take place rotatoryly, the condition that drops more can not take place, and the art person only needs handheld apparatus, need not change or control other apparatus again, be convenient for the operation in the art.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.

Fig. 1 is a front view of the hollow hexagonal wrench of the present invention.

Fig. 2 is a sectional view of the hollow hexagonal wrench in the direction of a-a.

Fig. 3 is a schematic structural view of the tail screw thread guide pin of the present invention.

Fig. 4 is a schematic structural view of the handle of the present invention.

Fig. 5 is a schematic view of the overall structure of the intramedullary nail holding device of the present invention.

Detailed Description

The present invention is described in more detail below to facilitate an understanding of the invention.

As shown in fig. 1 to 5, the intramedullary nail tail holding device of the present invention includes a hollow hexagonal wrench 1, a tail screw thread guide pin 2 and a handle 3, wherein a central channel 12 penetrating through the entire hollow hexagonal wrench is axially disposed inside the hollow hexagonal wrench 1, and the central channel is used for placing the tail screw thread guide pin and combining the hollow hexagonal wrench and the tail screw thread guide pin together; the handle 3 is sleeved outside the tail end of the hollow hexagonal wrench, is matched with the hollow hexagonal wrench and is used for being held by a hand when the tail nail is driven.

The front end of the hollow hexagonal wrench 1 is hexagonal 11 and is used for driving the tail nail to be screwed and unscrewed.

A first locking threaded hole 13 and a second locking threaded hole 14 are formed in the outer peripheral wall of the tail end of the hollow hexagonal wrench 1, the first locking threaded hole 13 and the second locking threaded hole 14 are arranged perpendicular to the axial direction of the hollow hexagonal wrench 1, and extend from the outer peripheral wall of the tail end of the hollow hexagonal wrench 1 to a central channel 12; the first locking threaded hole 13 and the second locking threaded hole 14 are respectively used for inserting and screwing a first locking screw and a second locking screw, so that the tail screw thread guide pin is fixed in the central channel 12, and the hollow hexagonal wrench and the tail screw thread guide pin are combined together.

The central axes of the first locking threaded hole 13 and the second locking threaded hole 14 are located on the same straight line.

The front end of the tail nail threaded guide needle 2 is provided with a threaded part 21, and the threaded part 21 can be screwed into a threaded hole in the center of the tail nail to hold the tail nail.

The rear end of the tail nail threaded guide pin 2 is a hexagonal column 22 similar to a nut, and the threaded part of the front end is manually driven by an operator to be screwed into the threaded hole in the center of the tail nail.

The rear end of the central channel 12 is provided with a receiving groove 15 for receiving the hexagonal column 22.

The center of the handle is provided with a handle center through hole 31 along the axial direction of the handle, and the handle is sleeved outside the tail end of the hollow hexagonal wrench through the handle center through hole.

The peripheral wall of the handle is provided with concave parts 32 and convex ribs 33 which are alternately arranged at intervals.

The recessed portion 32 and the raised rib 33 are used to increase friction and facilitate handling during driving of the tail nail.

The intramedullary nail tail nail holding device has the overall characteristic structure as shown in figure 5, combines the hollow hexagonal wrench and the tail nail screw thread guide pin into a whole, only needs one instrument in the operation to meet the operation requirement of the operation, is convenient for the use of the operator, and reduces the quantity of the instruments.

The foregoing description of the preferred embodiments of the invention has been presented for purposes of illustration and description. Modifications and variations of the embodiments disclosed herein may be made by those skilled in the art without departing from the scope and spirit of the invention.

Claims

1. The intramedullary nail tail nail holding device is characterized by comprising a hollow hexagonal wrench, a tail nail thread guide pin and a handle, wherein the front end of the hollow hexagonal wrench is hexagonal and is used for driving a tail nail to be screwed and unscrewed; a central channel penetrating through the whole hollow hexagonal wrench is axially arranged inside the hollow hexagonal wrench, and the central channel is used for placing a tail screw thread guide pin and combining the hollow hexagonal wrench and the tail screw thread guide pin together; the front end of the tail nail threaded guide pin is provided with a threaded part which can be screwed into a threaded hole in the center of the tail nail to hold the tail nail; the rear end of the tail nail threaded guide pin is provided with a hexagonal column for an operator to manually drive a threaded part at the front end to be screwed into a threaded hole in the center of the tail nail; the handle is sleeved outside the tail end of the hollow hexagonal wrench, is matched with the hollow hexagonal wrench and is used for being held by a hand when the tail nail is driven.

2. The intramedullary nail holding device according to claim 1, wherein a first locking threaded hole and a second locking threaded hole are provided on the outer peripheral wall of the tail end of the hollow hexagonal wrench, and the first locking threaded hole and the second locking threaded hole are both arranged perpendicular to the axial direction of the hollow hexagonal wrench and extend from the outer peripheral wall of the tail end of the hollow hexagonal wrench to the central channel; the first locking threaded hole and the second locking threaded hole are used for allowing a first locking screw and a second locking screw to be inserted and screwed down respectively, so that the tail screw thread guide pin is fixed in the central channel, and the hollow hexagonal wrench and the tail screw thread guide pin are combined together.

3. The intramedullary nail tail holding device according to claim 2, wherein the central axes of the first locking screw hole and the second locking screw hole are located on the same straight line.

4. The intramedullary nail tail holding device of claim 1, wherein the tail end of the central channel is provided with a receiving slot for receiving the hexagonal post.

5. The intramedullary nail holding device according to claim 1, wherein a handle central through hole is provided at the center of the handle along the axial direction of the handle, and the handle is sleeved outside the tail end of the hollow hexagonal wrench through the handle central through hole.

6. The intramedullary nail tail holding device according to claim 1, wherein the handle is provided with a peripheral wall having a plurality of alternating recesses and ribs.