Needle inserting positioner for patellar fracture

A patella fracture and locator technology, applied in the field of fracture needle locator and patella fracture needle locator, can solve problems such as unstable fixation, limited needle insertion angle, direction, trauma, etc., to increase the success rate of surgery , Simple operation and high accuracy

Inactive Publication Date: 2017-03-22
NANJING DRUM TOWER HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional surgical method is that the doctor directly inserts the Kirschner wire or the guide wire based on experience and feeling, and then sees through after the needle is inserted. If the position of the needle is not good, it needs to be pulled out and re-inserted. This will not only cause unnecessary trauma, but also prolong the operation time. Bring pain to patients; at the same time, for patients with comminuted fractures, the angle and direction of needle insertion are very limited for the fixation of small bone fragments. Multiple needle insertions may cause the fixation to be unstable, and even small fracture fragments are further broken and cannot be fixed. embarrassing ending

Method used

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  • Needle inserting positioner for patellar fracture
  • Needle inserting positioner for patellar fracture
  • Needle inserting positioner for patellar fracture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 , 2 , 3, 4, and 9 show a needle positioning device for patella fractures, including two "L"-shaped positioning pieces, which are respectively A piece 1 and B piece 2, and the A piece 1 and B piece 2 Combined to form a "C"-shaped structure, one end of the A piece 1 and B piece 2 is provided with opposite fixed teeth 8, the A piece 1 is provided with a limiting groove 9, and the A piece 1 and B piece 2 are connected A buckle 10 is provided at the position; the fixed teeth 8 contain developing materials under X-ray.

[0042] The lock is a one-way anti-backward lock. After A piece and B piece are combined with each other, when sliding B piece in the limit groove moves along the direction of reducing the distance between the two fixed teeth, the lock buckle does not stop, and A piece and B piece move freely. When the relative movement stops, the buckle is automatically locked, and the AB pieces cannot move with each other. When it is necessary to move th...

Embodiment 2

[0053] Such as figure 1 , 2 , 3, 4, and 9 show a needle positioning device for patella fractures, including two "L"-shaped positioning pieces, which are respectively A piece 1 and B piece 2, and the A piece 1 and B piece 2 Combined to form a "C"-shaped structure, one end of the A piece 1 and B piece 2 is provided with opposite fixed teeth 8, the A piece 1 is provided with a limiting groove 9, and the A piece 1 and B piece 2 are connected A buckle 10 is provided at the position; the fixed teeth 8 contain developing material under X-ray.

[0054] The lock is a one-way anti-backward lock. After the A piece and the B piece are combined with each other, when the sliding piece B moves in the limiting groove along the direction of decreasing the distance between the two fixed teeth, the lock buckle does not stop, and the A piece and the B piece move freely. When the relative movement stops, the buckle is automatically locked, and the AB pieces cannot move with each other. When it...

Embodiment 3

[0067] In vitro simulation experiment of a needle positioning device for patella fracture

[0068] Objective: To explore whether the needle locator for patella fracture can improve the accuracy of needle placement by making a patella fracture model in vitro;

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PUM

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Abstract

The invention belongs to the field of medical apparatuses, and relates to a needle inserting positioner for fracture, in particular to a needle inserting positioner for patellar fracture. The needle inserting positioner comprises two L-shaped positioning sheets, namely a sheet A and a sheet B, wherein the sheet A and the sheet B are combined into a C-shaped structure; one end of the sheet A and one end of the sheet B are provided with opposite fixed teeth; a limiting groove is formed in the sheet A; the part, where the sheet A and the sheet B are connected, is provided with a latch; and the fixed teeth contain an X-light developing material. The needle inserting positioner is small in structure and is capable of taking a positioning effect on needle inserting for the patellar fracture; the patellar fracture, after being positioned by virtue of the positioner, is subjected to X-ray perspective, and a kirschner wire or a guide needle is implanted after it is confirmed that a position on a patellar anterioposterior and lateral film is good, so that the success rate of an operation is improved.

Description

technical field [0001] The invention belongs to the field of medical devices, and relates to a needle positioning device for fractures, in particular to a needle positioning device for patella fractures. Background technique [0002] The patella is located in front of the knee joint and in front of the lower end of the femur. It is the largest sesamoid bone in the human body and is embedded in the quadriceps tendon. It is a triangular flat bone. The bottom is up, the tip is down, the front is rough, and the back is a smooth articular surface, which articulates with the patella of the femur and participates in the formation of the knee joint. Can be felt on the body surface. The patella protects the knee joint and prevents the quadriceps tendon from rubbing against the cartilage surface of the femoral condyle. The function of joint excessive adduction, abduction and extension and flexion, as well as the function of the car chain to increase the rotation ability of the knee ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/90A61B90/11
CPCA61B17/90
Inventor 邱旭升陈一心施鸿飞王骏飞熊进
Owner NANJING DRUM TOWER HOSPITAL
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