CN210130914U

CN210130914U - Proximal femoral intramedullary nail guide pin positioning adjusting sleeve

Info

Publication number: CN210130914U
Application number: CN201821255260.3U
Authority: CN
Inventors: 钟环; 欧阳汉斌; 陈海聪; 蔡小娴; 康雅思; 莫诒向; 刘通; 王海悦
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-08-06
Filing date: 2018-08-06
Publication date: 2020-03-10
Anticipated expiration: 2028-08-06

Abstract

A sleeve for positioning and adjusting a guide pin of a proximal intramedullary nail of a femur is provided with a sleeve and a handle, wherein one end of the handle is fixed at one end of the outer wall surface of the sleeve, and the other end of the sleeve is provided with annular sawteeth. When the sleeve is used, one end of the sleeve is abutted to the vertex of the greater trochanter of the femur through the minimally invasive incision and is fixed through the annular sawteeth, so that the sleeve is prevented from sliding at the vertex of the greater trochanter of the femur. Selecting any channel, inserting the 1 st guide pin, and performing initial x-ray fluoroscopy to confirm the position; according to the first perspective result, confirm whether the position of 1 st piece of guide pin is in front and back deviation or inside and outside deviation state, confirm the required direction and the range of adjusting of 2 nd piece of guide pin afterwards, insert 2 nd piece of guide pin at through-hole department according to the position of confirming from this, go on x-ray perspective once more finally and confirm, take out 1 st piece of guide pin and sleeve at last, keep 2 nd piece of guide pin of final position.

Description

Proximal femoral intramedullary nail guide pin positioning adjusting sleeve

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a guide pin positioning and adjusting sleeve for a proximal femoral nail.

Background

Proximal femoral fractures are a serious trauma common to the elderly population, and long-term bed arrest is often accompanied by a series of serious complications in the patient population who is not treated by surgery, and a heavy burden is brought to the families and the society of the patients. Currently, proximal femoral fractures are advocated for surgical treatment to achieve positive and reliable fracture fixation, thereby facilitating reduction of bed arrest time and associated complications, and allowing patients to perform early functional exercises. However, the conventional intramedullary fixation methods such as steel plates and dynamic hip screws are difficult to maintain the stability of the fracture under the early load, and with the development of intramedullary nail technology, intramedullary fixation represented by proximal femoral intramedullary nails provides stability guarantee for the early load of proximal femoral fractures. In the process of using intramedullary nail implantation fixation, a guide pin is accurately inserted into the vertex of the greater trochanter of femur before a main nail is driven in so as to guide the direction of the main nail to enter subsequently, and for the minimally invasive nail incision at the horizontal position adopted at present, the minimally invasive incision can not enable an operator to finish the insertion of the guide pin quickly and accurately, particularly for a patient with fat outer appearance of the outer side of the thigh, the operator often only can stretch into the incision through fingers and touch to touch the vertex of the greater trochanter to readjust the position of the guide pin, including the movement of the front side, the back side and the inner side, and X-ray fluoroscopy examination is needed to be carried out during each adjustment. As such, not only is the time for surgical anesthesia and local tissue trauma greatly increased, but also the radiation exposure of the physician and patient is inevitably increased.

Therefore, it is necessary to provide a positioning adjustment sleeve for a proximal intramedullary nail guide pin to overcome the deficiencies of the prior art.

Disclosure of Invention

An object of the utility model is to avoid prior art's weak point and provide a thighbone near-end intramedullary nail guide pin positioning adjustment sleeve, this thighbone near-end intramedullary nail guide pin positioning adjustment sleeve can assist the operation operator accurate, fix the guide pin in the best treatment position of thighbone fast, and can directly use with the relevant appurtenance collocation of present thighbone near-end intramedullary nail, match the current guide pin model of difference, and the operation is simple, can effectively solve the subjective experience dependence that exists in the current guide pin adjustment technique clinically, blindness, need to relapse many times x light perspective and confirm and the thighbone greater trochanter summit portion tissue damage scheduling problem that the repetitious operation caused. In addition, the accurate guide pin position is beneficial to optimizing the entering position of the main nail of the intramedullary nail, and the risks of complications such as fracture displacement, reduction loss, iatrogenic fracture and the like caused by position deviation in the nail entering process of the main nail are effectively reduced, so that the treatment effect of the intramedullary nail for the proximal femoral fracture is improved.

The above object of the present invention is achieved by the following technical means.

Provides a proximal femoral intramedullary nail guide pin positioning adjusting sleeve which is provided with a sleeve and a handle, wherein one end of the handle is fixedly connected with the outer wall surface of one end of the sleeve.

The sleeve is used to penetrate a minimally invasive incision and to abut the femur.

Preferably, a plurality of channels for penetrating the intramedullary nail are arranged in the sleeve; the channel is arranged as a central axisymmetric cylindrical channel.

Preferably, the diameter of the channels is 2.8-3.4mm, the diameter of the channels being the same or different.

Preferably, the central axis of each channel is vertically spaced from 3.5 to 4.4 mm.

Defining one end of the sleeve, which is used for being connected with the handle, as a penetrating end, and defining the other end of the sleeve as an abutting end; the abutting end is also provided with annular saw teeth.

The annular saw teeth are provided with a plurality of saw teeth, the number of the saw teeth is 3-8, and the number of the channels is 7.

Preferably, the sleeve is connected with the handle at a right angle in an L shape.

Preferably, the sleeve is provided as a cylindrical sleeve; the handle is a flat handle.

Preferably, the outer wall surface of the handle is also provided with an anti-skid layer; the antiskid layer is any one or more of a rubber antiskid layer, a continuous concave-convex layer and a plurality of continuous ribs.

The utility model discloses a proximal femoral nail guide pin positioning adjustment sleeve, which is provided with a sleeve and a handle, wherein one end of the handle is fixed at one end of the outer wall surface of the sleeve, and the other end of the sleeve is provided with annular sawteeth. When the sleeve is used, one end of the sleeve is abutted to the vertex of the greater trochanter of the femur through the minimally invasive incision and is fixed through the annular sawteeth, so that the sleeve is prevented from sliding at the vertex of the greater trochanter of the femur. Selecting any channel, inserting the 1 st guide pin, and performing initial x-ray fluoroscopy to confirm the position; according to the first perspective result, confirm whether the position of 1 st piece of guide pin is in front and back deviation or inside and outside deviation state, confirm the required direction and the range of adjusting of 2 nd piece of guide pin afterwards, insert 2 nd piece of guide pin at through-hole department according to the position of confirming from this, go on x-ray perspective once more finally and confirm, take out 1 st piece of guide pin and sleeve at last, keep 2 nd piece of guide pin of final position.

Through the utility model discloses a thighbone near-end intramedullary nail guide pin positioning adjustment sleeve, when the thighbone near-end carries out the intramedullary nail guide pin location, through combining the sleeve, be convenient for thighbone near-end intramedullary guide pin selects into accurate regulation positioning operation, and can be quick according to the X line perspective condition in the real-time art, the accuracy is adjusted the guide pin to the best position, the uncertainty of traditional touch thighbone greater trochanter summit regulation needle feeding point method of relying on feeling has been avoided, be favorable to quick and accurately fixing a position to the best needle feeding point, the local tissue damage that has shown to have reduced many times of blind threading and cause, radioactivity exposure dose and operation time in the art, the effect of thighbone near-end intramedullary nail internal fixation treatment hip fracture has been improved.

Drawings

The present invention will be further described with reference to the accompanying drawings, but the contents in the drawings do not constitute any limitation to the present invention.

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is another view angle structure diagram of embodiment 1 of the present invention.

Fig. 3 is a schematic view of a usage state structure of embodiment 2 of the present invention.

Fig. 4 is an enlarged schematic view of a portion F in fig. 3.

Fig. 5 is a schematic view of a usage state structure of embodiment 2 of the present invention.

Fig. 6 is a schematic structural view of embodiment 3 of the present invention.

Fig. 7 is an enlarged schematic view of a portion H in fig. 6.

Fig. 8 is a schematic structural view of embodiment 4 of the present invention.

In fig. 1 to 8, there are included:

sleeve 100, channel 101, annular serrations 102;

handle 200, non-slip layer 201.

Detailed Description

The invention will be further described with reference to the following examples.

Example 1.

A sleeve for adjusting the positioning of a proximal intramedullary nail guide pin of a femur is provided with a sleeve 100 and a handle 200 as shown in figures 1 to 2, wherein one end of the handle 200 is fixedly connected with the outer wall surface of one end of the sleeve 100.

The sleeve 100 is used to penetrate a minimally invasive incision and to abut the femur.

Specifically, the sleeve 100 is provided as a cylindrical sleeve 100; the handle 200 is provided as a flat handle 200.

Further, a channel 101 for penetrating the intramedullary nail is arranged in the sleeve 100, and a plurality of channels 101 are arranged; the channel 101 is arranged as a central axisymmetric cylindrical channel 101.

Specifically, the diameter of the channels 101 is 2.8-3.4mm, the diameter of each channel 101 is the same, and the vertical distance of the central axis of each channel 101 is 3.5-4.4 mm. The number of the channels 101 is preset according to actual needs, the distance between the central axes of the channels 101 is set according to the adjustable amplitude of the guide pin, and the diameter of the channels 101 is matched with that of the femoral intramedullary nail guide pin so as to be directly sleeved.

Further, the sleeve 100 is connected to the handle 200 at a right angle in an "L" shape.

During operation, the sleeve is abutted to the vertex of the greater trochanter of the femur through a minimally invasive incision, a channel at any position is selected, the 1 st guide pin is inserted, and the position is confirmed by initial x-ray fluoroscopy; according to the first perspective result, confirm whether the position of 1 st piece of guide pin is in front and back deviation or inside and outside deviation state, confirm the required direction and the range of adjusting of 2 nd piece of guide pin afterwards, insert 2 nd piece of guide pin at through-hole department according to the position of confirming from this, go on x-ray perspective once more finally and confirm, take out 1 st piece of guide pin and sleeve at last, keep 2 nd piece of guide pin of final position.

The utility model discloses a thighbone near-end intramedullary nail guide pin location adjustment sleeve is convenient for the regulation positioning operation when thighbone near-end intramedullary nail guide pin selects the needle point of insertion, and can be according to real-time X line perspective condition in the art quick, the accuracy is adjusted the guide pin to the best position, the uncertainty of traditional dependence touch thighbone greater trochanter summit regulation needle point method of feeling has been avoided, be favorable to quick and accurately fix a position best needle point, the local tissue damage that blind needle threading caused many times is showing to have been reduced, radioactivity exposure dose and operation time in the art, the effect of thighbone near-end intramedullary nail internal fixation treatment hip fracture has been improved.

Example 2.

A proximal intramedullary nail guide pin positioning adjustment sleeve of femur, the other structure is the same as embodiment 1, except that, as shown in fig. 3-5, the proximal intramedullary nail guide pin positioning adjustment sleeve 100 of femur defines one end of the sleeve 100 for connecting with a handle 200 as a penetrating end, and the other end of the sleeve 100 as a butting end; the abutting end is also provided with annular serrations 102.

The annular saw teeth 102 are provided with a plurality of saw teeth, and the number of the saw teeth is 3-8. The annular saw teeth 102 are common knowledge in the art, and mainly function to prevent the sleeve slippage at the interference part, and the detailed structural features are not described again.

In the present embodiment, 7 channels 101 are provided.

In use, the accuracy of the treatment site is further improved by providing annular serrations 102 which prevent the sleeve 100 from slipping at the greater trochanter apex of the femur.

Example 3.

A proximal femoral intramedullary nail guide pin positioning adjustment sleeve is the same as embodiment 1 or 2 in other structures, except that as shown in figures 6 and 7, the diameter of a channel 101 is 2.8-3.4mm, and the diameter of each channel 101 is different.

The channels are set to be channels with different diameters, so that guide pins with different models can be selected according to the femoral condition of a patient in the operation; and when the position of 1 st guide pin, fix in the passageway that the diameter is little through selecting miniature guide pin, can reach accurate fixed to reduce the damage to patient's thighbone, be favorable to the recovery in later stage.

Example 4.

A proximal femoral intramedullary nail guide pin positioning adjustment sleeve, the other structure of which is the same as any one of embodiments 1-3, except that, as shown in figure 8, a sleeve 100 is provided as a cylindrical sleeve 100; the handle 200 is provided as a flat handle 200.

The outer wall surface of the handle 200 is also provided with an anti-skid layer 201; the antiskid layer 201 is one or more of a rubber antiskid layer 201, a continuous concave-convex layer and a plurality of continuous ribs. The anti-slip layer 201 is common knowledge in the art, and the detailed structure thereof will not be described.

The sleeve is arranged into the cylindrical sleeve, so that the sleeve can not damage the minimally invasive incision when penetrating into the minimally invasive incision.

The handle sets up to flat handle, and the handle outer wall still is provided with the skid resistant course, can prevent to cause the injury to the patient because operation operator's slip when using the operation.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a thighbone near-end intramedullary nail guide pin location adjusting sleeve which characterized in that: the handle is provided with a sleeve and a handle, and one end of the handle is fixedly connected with the outer wall surface of one end of the sleeve;

a channel for penetrating the intramedullary nail is also arranged in the sleeve;

defining one end of the sleeve, which is used for being connected with the handle, as a penetrating end, and defining the other end of the sleeve as a butting end;

the abutting end is also provided with annular saw teeth.

2. The proximal femoral intramedullary nail guide pin positioning adjustment sleeve of claim 1, wherein: the number of the channels is multiple; the channel is arranged as a central axisymmetric cylindrical channel.

3. The proximal femoral intramedullary nail guide pin positioning adjustment sleeve of claim 2, wherein: the diameter of the channels is 2.8-3.4mm, and the diameters of the channels are the same or different.

4. The proximal femoral intramedullary nail guide pin positioning adjustment sleeve of claim 3, wherein: the vertical distance of the central axis of the channel is 3.5-4.4 mm.

5. The proximal femoral intramedullary nail guide pin positioning adjustment sleeve of claim 4, wherein: the annular saw teeth are provided with a plurality of saw teeth.

6. The proximal femoral intramedullary nail guide pin positioning adjustment sleeve of claim 5, wherein: the number of the saw teeth is 3-8.

7. The proximal femoral intramedullary nail guide pin positioning adjustment sleeve of claim 6, wherein: the number of the channels is 7.

8. The proximal femoral intramedullary nail guide pin positioning adjustment sleeve of claim 7, wherein: the sleeve is connected with the handle in an L-shaped right angle.

9. The proximal femoral intramedullary nail guide pin positioning adjustment sleeve of claim 8, wherein: the sleeve is set to be a cylindrical sleeve, the handle is set to be a flat handle, and an anti-skid layer is further arranged on the outer wall surface of the handle.

10. The proximal femoral intramedullary nail guide pin positioning adjustment sleeve of claim 9, wherein: the antiskid layer is any one or more of a rubber antiskid layer, a continuous concave-convex layer and a plurality of continuous ribs.