Screw internal fixation needle inserting direction navigation device for scaphoid fracture

Abstract

The invention discloses a screw internal fixation needle inserting direction navigation device for scaphoid fracture. The device comprises a hand supporting plate, a holding post, a left spacing rod A, a right spacing rod A and a needle guiding seat, wherein the upper end surface of the hand supporting plate is provided with a marking line along a front and back direction; the holding post is fixed on the front middle part of the hand supporting plate; the middle axial line of the holding post and the marking line are positioned on the same plane A; the left spacing rod A is fixed on the leftmiddle part of the hand supporting plate; the right spacing rod A is fixed on the right middle part of the hand supporting plate; the middle axial line of the left spacing rod A and the middle axial line of the right spacing rod A are positioned on the same place B; the plane A and the plane B are vertically crossed to form a cross line; the needle guiding seat can be fixed on the left front partof the upper end surface of the hand supporting plate in a lifting and lowering way and is provided with a needle guiding groove; the needle feeding direction of the needle guiding groove points to the cross line and forms an angle of 45 degrees with the cross line; and a needle feeding surface where the needle guiding groove is positioned independently forms an angle of 45 degrees with the planeA and the plane B, wherein the needle feeding surface is vertical to the upper end surface of the hand supporting plate. The device has the beneficial effects that during implementation, the guidancequality of a needle feeding direction is good, the workload of a surgeon can be lightened, and needle feeding frequencies are reduced.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a navicular bone fracture screw internal fixation needle insertion direction navigation device. Background technique [0002] In the orthopedics departments of major hospitals, for patients with scaphoid fractures, it is generally necessary to use hollow screws to internally fix the two segments of the scaphoid fractures at the palm of the patient's wrist. [0003] And in the middle of carrying out scaphoid fracture internal fixation operation to the patient, its difficulty then is: the orientation of guide needle insertion direction is difficult. [0004] The general surgical operation is to first determine the needle insertion direction of the guide needle into the center of the two segments of the scaphoid fracture, and then, through the corresponding guide pin, hollow screws are inserted into the two segments of the scaphoid fracture, so that the needle can be easil...

AI Technical Summary

Problems solved by technology

[0006] However, in actual operation, there is no special navigation device for the needle insertion direction of the internal fixation of the scaphoid fracture screw for use. Therefore, the surgeon generally needs to rely on experience to estimate the needle insertion direction of the guide wire to be used. Insert the needle according to the estimated needle insertion direction

It is very difficult to estimate the direction of needle insertion. The estimated angle deviation is too large, even if the direction of needle insertion will deviate a lot, so that the needle cannot pass through the center of the two segments of the scaphoid fracture well. When the first After the first needle insertion, when it is found that the needle insertion direction deviates greatly under X-ray fluoroscopy, it is often necessary to re-enter the needle several times, and slowly adjust until the needle insertion direction is correct, so that the hollow screw to be inserted later can penetrate the patient's boat In the central part of the two sections of the bone fracture, in this way, even if the operation is troublesome and time-consuming and laborious, it will greatly increase the workload of the surgeon, and multiple needle insertions will easily cause bone damage and osteoporosis in the patient, which in turn will cause the patient to lose weight. Difficult-to-heal navicular fractures

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