Drill bit for total hip replacement minimally invasive surgery

Abstract

The invention discloses a drill bit for a total hip replacement minimally invasive surgery. A flexible shaft is formed by a spring with certain rigidity and certain flexibility; a handle part and a cutting head are respectively welded on two ends of the flexible shaft; a stainless steel isolation sleeve is arranged in a puncture hole near a surgical incision; the cutting head at the lower end of the flexible shaft is placed in along an inner cavity of the isolation sleeve; a limiting guide sleeve is placed in the surgical incision through an operating handle; the cutting head is driven by theflexible shaft to conduct downward limiting drilling along the limiting guide sleeve; muscle nerves and other important structures of a patient cannot be damaged during high-speed rotation; and the limiting guide sleeve can prevent a drilled hole from entering a pelvic cavity too deep. The cutting head is made of 316L stainless steel, the serious consequence that a drill bit is broken in an acetabular bone and cannot be taken out during bent drilling can be prevented, after drilling is completed, a screw with a proper length is screwed in along an inner cavity of the isolation sleeve through areversible screwdriver, so that an metal part connecting acetabulum can be fixedly, and the drill bit is safe and reliable, and convenient to operate.

Description

technical field [0001] The invention relates to a drill bit for minimally invasive surgery of total hip joint replacement. Background technique [0002] Traditional total hip replacement surgery needs to cut off the external rotators and destroy the integrity of the joint capsule, which will affect the function of the muscles around the hip joint. Surgical dislocation is also required during the operation, which requires the cooperation of multiple people; SUPERPATH minimally invasive total hip joint Due to the small incision length of the replacement surgery, which is only 6cm to 8cm, the external rotator muscle does not need to be cut during the operation. Joint capsule; no surgical dislocation is required during the operation, and the operation does not cause extreme rotation and distortion of the limbs. The operation can be completed only with the assistance of the surgeon and the assistant. Therefore, it has become the goal that joint surgeons have been exploring; this ...

AI Technical Summary

Problems solved by technology

[0002] Traditional total hip replacement surgery needs to cut off the external rotators and destroy the integrity of the joint capsule, which will affect the function of the muscles around the hip joint. Surgical dislocation is also required during the operation, which requires the cooperation of multiple people; SUPERPATH minimally invasive total hip joint Due to the small incision length of the replacement surgery, which is only 6cm to 8cm, the external rotator muscle does not need to be cut during the operation. Joint capsule; no surgical dislocation is required during the operation, and the operation does not cause extreme rotation and distortion of the limbs. The operation can be completed only with the assistance of the surgeon and the assistant. Therefore, it has become the goal that joint surgeons have been exploring; this technology is developed by Initiated by Dr. James Chow of St. Luke's Medical Center in Phoenix, Arizona, USA (St. Luke's Medical Center, Phoenix, Arizona, USA), the SuperPATH approach (Supercapsular Percutaneously Assisted Total Hip) is improved from the standard posterior approach. The SuperPATHTM approach retains all the advantages of the standard posterior approach, and can be further extended, and can be easily converted into a standard posterior approach; minimally invasive total hip replacement surgery has a small and deep surgical incision with a certain oblique angle , the drill bit needs to be inserted into the drilling position along a tortuous path, and at the same time, it is necessary to prevent damage to many neuromuscular and other important structures around the incision. Therefore, it is difficult to implant the fixation screw of the acetabular metal part from the tiny incision, and the operation is inconvenient. Ordinary hard tool steel drill bits are easily broken in the acetabular bone when drilling in a bent state, resulting in serious consequences that cannot be removed. It is necessary to provide a safe, reliable, and easy-to-operate acetabular joint for minimally invasive total hip replacement surgery. drill

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