Femoral head intramedullary fixed drilling support

Abstract

The invention discloses a femoral head intramedullary fixed drilling support. The support comprises an inner fixing frame, a guide adjusting mechanism and a drill bit, wherein one end of the inner fixing frame is fixed to a greater trochanter, the other end of the inner fixing frame is supported on a femur body, the guide adjusting mechanism is arranged on the inner fixing frame in a sliding manner, the drill bit is installed on the guide adjusting mechanism, and the guide adjusting mechanism drives the drill bit to be adjusted to a preset position and a preset angle on the inner fixing frameto form locking. One end of the inner fixing frame is fixed to the greater trochanter, and thereby the connection stability of the inner fixing frame is guaranteed. The other end of the inner fixing frame is supported on the femur body to assist in supporting the inner fixing frame to enhance the stability of the inner fixing frame. The guide adjusting mechanism ensures that the drill bit accurately drills to a focus part at an optimal position and an optimal angle. The guide adjusting mechanism drives the drill bit to be adjusted to the preset position and the preset angle on the inner fixingframe to form locking, so that the guide adjusting mechanism has the stable guide effect on the drill bit. The support has the advantages of reliability in use, simplicity in operation and easiness in maintenance.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a fixed drilling bracket for intramedullary femoral head. Background technique [0002] Femoral head necrosis is a common orthopedic disease, also known as avascular necrosis of the femoral head. After the onset, patients usually have symptoms such as pain, limp, joint stiffness, and limited hip joint function. Free development can gradually lead to femoral head cyst degeneration, bone collapse, and then form hip arthritis, seriously affecting the patient's work and quality of life. [0003] Necrosis of the femoral head requires interventional surgery in the early stage of collapse to preserve the femoral head to the maximum extent and avoid further collapse and damage. Bone grafting for femoral head necrosis is one of the treatment methods for femoral head hip-preserving surgery. It is suitable for early femoral head necrosis, especially for patients with small lesi...

AI Technical Summary

Problems solved by technology

Once part of the necrotic bone tissue is completely removed, it will directly affect the surgical effect

However, there is no reliable, accurate and easy-to-operate auxiliary tool for lesion removal, which realizes precise positioning of the drill bit and makes it possible to reach the lesion directly.

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