Femoral nail near-end needle insertion point positioning and navigation device

Abstract

The invention discloses a femoral nail near-end needle insertion point positioning and navigation device. The device comprises a buckle and a vertical rod, wherein a first needle rod clamp and a rod clamp are arranged on the vertical rod in a sliding mode; a transverse rod perpendicular to the vertical rod is arranged on the rod clamp in a sliding mode; the transverse rod is further connected witha second needle rod clamp in a sliding mode; a front guide needle perpendicular to the transverse rod is arranged on the second needle rod clamp in a sliding mode; the first needle rod clamp is further connected with one end of a side guide needle in a sliding mode; the side guide needle and the front guide needle are arranged in parallel; the other end of the side guide needle is connected withone end of an adjuster; a transverse guide needle perpendicular to the side guide needle is arranged on the adjuster in a sliding mode; the other end of the adjuster is connected with a positioning rod; a hollow positioning guider is arranged in a sliding hole of the positioning rod in a penetrating manner; the front end of the hollow positioning guider bends and extends towards the tip end of a transverse guide pin; and a guide pin channel is arranged in the hollow positioning guider. By means of the technical scheme, the operation time can be shortened, and the fluoroscopy frequency, the intraoperative bleeding amount and the incision length are reduced.

Description

technical field [0001] The invention relates to the field of orthopedic medical devices, in particular to a positioning and navigation device for a proximal needle insertion point of a femoral intramedullary nail. Background technique [0002] Intramedullary nail technology has been used clinically for nearly half a century. Due to its advantages of minimal invasiveness, less damage to periosteal blood supply, and reliable fixation, it has been widely used by orthopedic surgeons at home and abroad, especially for femoral In the treatment of intertrochanteric fractures and femoral fractures, the technique of closed reduction and intramedullary nailing has completely surpassed the traditional open reduction techniques of plate and screw fixation. Since the intramedullary nailing technique needs to complete the entire surgical operation through X-ray fluoroscopy guidance under the condition of no exposure (or limited exposure) of the fracture end, the intramedullary nail guide ...

AI Technical Summary

Problems solved by technology

At present, clinicians usually incise the skin and subcutaneous tissue, touch the tip of the greater trochanter with their fingers after separating the gluteus medius, and then introduce the guide needle. However, this operation will increase bleeding, and there is a risk of infection caused by the guide needle puncturing sterile gloves. Increase

[0004] In clinical work, it is found that the selection of the proximal femoral intramedullary nail entry point is the key to intramedullary nail fixation. If the nail entry point is not selected properly, it is easy to cause loss of reduction and fixation failure.

In clinical practice, the body surface marking line is selected to assist in the selection of the nail entry point and the nail entry route, the femoral central axis is marked through the body surface, and the intramedullary nail guide wire is minimally invasively implanted with reference to the external marking line, which shortens the operation time and reduces the cost. Surgical trauma and bleeding, but this method requires rich operating experience, and it is difficult for novices to learn

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