CN213217413U

CN213217413U - Femur proximal hollow T-shaped handle kit for traction of pelvis and acetabulum fracture

Info

Publication number: CN213217413U
Application number: CN202021577167.1U
Authority: CN
Inventors: 杨阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-05-18
Anticipated expiration: 2030-08-03

Abstract

The utility model relates to the technical field of medical equipment, especially, relate to a hollow T type handle external member of thighbone near-end for traction of pelvis acetabular fracture, including T type handle body, T type handle body includes the traction lever, the traction lever is cylindrical structure, and its axial is equipped with the shaft hole that is used for long guide pin to pass, the outer wall below of traction lever is equipped with the external screw thread, the screw hole that forms through the tapping of hollow drill bit on external screw thread and the thighbone near-end matches thread engagement. The utility model discloses can pull pelvis acetabular fracture homonymy thighbone near-end, make the fracture reset more easily, reduce operation time.

Description

Femur proximal hollow T-shaped handle kit for traction of pelvis and acetabulum fracture

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a hollow T type handle external member of thighbone near-end for traction of pelvis acetabular fracture.

Background

The pelvic fracture is a serious trauma, accounts for 1-3% of the total number of the fracture, is mostly caused by high-energy trauma, more than half of the pelvic fractures are accompanied by complications or multiple injuries, and the disability rate is as high as 50-60%. The most serious is traumatic hemorrhagic shock and pelvic organ merged injury, and the death rate is not high enough to be treated and can reach 10.2%. According to statistics, 50% -60% of pelvis fractures are caused by automobile accidents, 10% -20% are caused by pedestrian collisions, 10% -20% are motorcycle trauma, 8% -10% are high falling injuries, and 3% -6% are serious extrusion injuries; the hip bone consists of three parts, namely ilium, ischium and pubis, and a large and deep socket called acetabulum is arranged on the outer side surface of the hip bone to form a hip joint with the femoral head. The acetabulum is an important component of the hip joint, and the hip joint is easy to damage due to heavy load and large mobility. The fracture of the acetabulum can be caused by the fracture of the pubic ischium or the ilium when the pelvis is fractured, or the central dislocation of the hip joint. When the pelvis and the acetabulum are fractured, the far end of the pelvis and the acetabulum, namely the near end of the femur, needs to be pulled through the Schanz nails to counteract the reaction force of the femur head on the acetabulum, so that the pelvis and the acetabulum are more easily reduced. At present, Schanz nails on the market are not hollow, and are required to be successfully drilled once, otherwise, the bone mass loss is large after drilling for many times, and iatrogenic femoral neck fractures are easily caused.

Based on the above reason, the utility model provides a hollow T type handle external member of thighbone near-end for traction of pelvis acetabular fracture.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a hollow T type handle external member of thighbone near-end for traction of pelvis acetabular fracture, can pull pelvis acetabular fracture homonymy thighbone near-end, make the fracture reset more easily, reduce operation time.

The utility model discloses a be used for towed thighbone near-end hollow T type handle external member of pelvis acetabular fracture, including T type handle body, T type handle body includes the traction lever, the traction lever is cylindrical structure, and its axial is equipped with the shaft hole that is used for long guide pin to pass, the outer wall below of traction lever is equipped with the external screw thread, the screw hole that forms through the tapping of hollow drill bit matches the thread engagement on external screw thread and the thighbone near-end.

The top of the traction rod is provided with a handle connected with the traction rod, the handle and the traction rod form a T-shaped structure, and the shaft hole penetrates through the middle of the handle.

The length of the traction rod is smaller than that of the long guide pin; the inner diameter of the shaft hole is larger than the outer diameter of the long guide pin.

The bottom of the traction rod is provided with a conical guide part.

The threaded hole on the proximal femur end is formed by tapping through a hollow drill bit, and a positioning hole for the Kirschner wire to pass through is formed in the axial direction of the hollow drill bit.

The hollow drill bit comprises a drill bit handle and a drill bit body which are connected with the output end of the electric drill, the drill bit body comprises four cutting parts which are arranged in an annular array by taking the axis of the positioning hole as the center, the outer ends of the cutting parts are provided with threads, and a chip removal groove which is concave towards the axial direction and has a circular arc-shaped cross section is formed between the threads; the bottom of the drill bit handle is connected with the top of the drill bit body.

The width of the cross section of the bottom end of the cutting part is gradually increased from the bottom to the top.

The beneficial effects of the utility model reside in that:

(1) the utility model can draw the proximal femur end at the same side of pelvis and acetabulum fracture, so that the fracture is easier to reset, and the operation time is reduced;

(2) the utility model discloses fix a position earlier with the guide pin, the adjustment of being convenient for reduces medical staff ray exposure risk. The proximal femur iatrogenic fracture risk is reduced, the holding force is stronger, and the operability is better.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the hollow drill of the present invention.

In the figure: the novel hollow drill comprises a 1T-shaped handle body, a 11 traction rod, a 12 handle, a 13 shaft hole, a 14 external thread, a 15 guide part, a 2 long guide pin, a 3 hollow drill bit, a 31 positioning hole, a 32 drill bit handle, a 33 drill bit body, a 34 thread and a 35 chip groove.

Detailed Description

The following further description of the present invention:

referring to figures 1-2 of the drawings,

the utility model discloses a hollow T type handle external member of thighbone near-end for traction of pelvis acetabular fracture, including T type handle body 1, T type handle body 1 includes traction lever 11, traction lever 11 is cylindrical structure, and its axial is equipped with the shaft hole 13 that is used for long guide pin 2 to pass, traction lever 11's outer wall below is equipped with external screw thread 14, screw hole matching thread meshing that forms through the tapping of hollow drill bit 3 on external screw thread 14 and the thighbone near-end can pull pelvis acetabular fracture homonymy thighbone near-end, makes the fracture reset more easily, reduces operating time.

The top of the traction rod 11 is provided with a handle 12 connected with the traction rod, the handle 12 and the traction rod 11 form a T-shaped structure, and the shaft hole 13 penetrates through the middle of the handle 12, so that medical personnel can conveniently screw the traction rod 11 into the threaded hole.

The length of the traction rod 11 is less than that of the long guide pin 2; the inner diameter of the shaft hole 13 is larger than the outer diameter of the long guide pin 2, so that the long guide pin 2 can be smoothly and accurately placed; the long guide pin 2 is a Schanz pin.

The bottom end of the traction rod 11 is provided with a tapered guide part 15, so that medical staff can insert the traction rod 11 into the threaded hole more easily to play a role in guiding when using the medical staff.

The threaded hole on the proximal femur end is formed by tapping through the hollow drill bit 3, the axial direction of the hollow drill bit 3 is provided with a positioning hole 31 for the kirschner wire to pass through, the kirschner wire is firstly inserted into a target point, the positioning hole 31 is matched with the kirschner wire to play a positioning role, and the position of the threaded hole is ensured to be correct.

The hollow drill bit 3 comprises a drill bit handle 32 and a drill bit body 33 which are connected with the output end of the electric drill, the drill bit body 33 comprises four cutting parts which are arranged in an annular array by taking the axis of the positioning hole 31 as the center, the outer ends of the cutting parts are provided with threads 34, and a flute 35 which is concave towards the axial direction and has a circular arc-shaped cross section is formed between the threads 34; the bottom of the drill handle 32 is connected with the top of the drill body 33, chips which are conveniently cut are discharged by arranging the chip grooves 35, and the tapping efficiency is improved.

The width of the cross section of the bottom end of the cutting part is gradually increased from the bottom to the top, and the tapping efficiency is improved.

The operation process is as follows: firstly, inserting the kirschner wire into a proximal femur target point, then sleeving the positioning hole 31 on the hollow drill bit 3 into the kirschner wire, tapping to form a threaded hole, then holding two hands of a medical worker respectively at two ends of the handle 12, connecting the external thread 14 on the traction rod 11 with the threaded hole through threaded engagement, and fixing the long guide pin 2 at the proximal femur end through the axial shaft hole 13 of the T-shaped handle body 1.

Example (b): in the embodiment, the length of the traction rod 11 is 220mm, the outer diameter is 6.5mm, the inner diameter of an axial shaft hole 13 is 4mm, and the length of an external thread 14 below the outer wall is 70 mm; the length of the handle 12 is 100mm, and the outer diameter is 11 mm; the outer diameter of the long guide needle 2 is 3mm, and the length is 400 mm.

The above mentioned is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings or the direct or indirect application in the related technical field are included in the patent protection scope of the present invention.

Claims

1. A hollow T type handle external member of thighbone near-end for traction of pelvis acetabular fracture characterized in that: including T type handle body (1), T type handle body (1) includes traction lever (11), traction lever (11) are cylindrical structure, and its axial is equipped with shaft hole (13) that are used for long guide pin (2) to pass, the outer wall below of traction lever (11) is equipped with external screw thread (14), screw hole matching thread engagement that forms through hollow drill bit (3) tapping on external screw thread (14) and the thighbone near-end.

2. The proximal femoral hollow T-handle kit for traction of pelvic acetabular fractures according to claim 1, wherein: the top of the traction rod (11) is provided with a handle (12) connected with the traction rod, the handle (12) and the traction rod (11) form a T-shaped structure, and the shaft hole (13) penetrates through the middle of the handle (12).

3. The proximal femoral hollow T-handle kit for traction of pelvic acetabular fractures according to claim 2, wherein: the length of the draw bar (11) is less than that of the long guide pin (2); the inner diameter of the shaft hole (13) is larger than the outer diameter of the long guide needle (2).

4. The proximal femoral hollow T-handle kit for traction of pelvic acetabular fractures according to claim 3, wherein: the bottom end of the traction rod (11) is provided with a tapered guide part (15).

5. The proximal femoral hollow T-handle kit for traction of pelvic acetabular fractures according to claim 4, wherein: and a positioning hole (31) for the Kirschner wire to pass through is formed in the axial direction of the hollow drill bit (3).

6. The proximal femoral hollow T-handle kit for traction of pelvic acetabular fractures according to claim 5, wherein: the hollow drill bit (3) comprises a drill bit handle (32) and a drill bit body (33) which are connected with the output end of the electric drill, the drill bit body (33) comprises four cutting parts which are arranged in an annular array by taking the axis of the positioning hole (31) as the center, the outer ends of the cutting parts are provided with screw teeth (34), and a flute (35) which is concave towards the axial direction and has a circular arc-shaped cross section is formed between the screw teeth (34); the bottom of the bit shank (32) is connected with the top of the bit body (33).

7. The proximal femoral hollow T-handle kit for traction of pelvic acetabular fractures according to claim 6, wherein: the width of the cross section of the bottom end of the cutting part is gradually increased from the bottom to the top.