Hollow trephine provided with push rod

Abstract

The invention discloses a hollow trephine with a push rod, comprising a hollow trephine body and a push rod; the hollow trephine body includes a trephine bit, a connecting rod and a cross bar, the trephine bit is cylindrical, and one end of the trephine bit passes through the connecting rod It is fixedly connected with the cross bar, the cross bar is perpendicular to the ring bit and the connecting rod, the other end of the ring drill has a round hole, the axis of the round hole coincides with the axis position of the ring drill, and the outer wall of the ring drill has a hole in the direction of the ring drill axis. There is a strip hole, and the end of the round hole on the ring bit is provided with serrations; the push rod is cylindrical, and the push rod is slidably set in the round hole; the end of the push rod near the cross bar is provided with a push block, and the bar groove An end close to the cross bar is provided with a card slot on the long side wall, and the push block can be locked in the card slot. Through the above method, the present invention can conveniently remove the bone column stuck in the hollow trephine to shorten the operation time and reduce the risk of anesthesia. It can also be stuck on the upper part of the hollow trephine when not in use, without affecting the normal operation of the hollow trephine. use.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a hollow trephine with a push rod. Background technique [0002] Clinically, patients with fractures, especially those with bone defects, usually need bone grafting. At present, the clinically used bone extraction instruments are mainly osteotome and hollow trephine. Osteotomy requires a large incision during the bone harvesting process, mainly taking cortical bone, which destroys the shape of the donor site. Hollow trephine can drill cancellous bone, the required incision is small, the trauma is small, and the cancellous bone taken out is more conducive to bone resorption and utilization. The bone column is removed through the trephine, which prolongs the operation time and increases the risk of anesthesia. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a hollow trephine with a push rod, which can conveniently ...

AI Technical Summary

Problems solved by technology

Hollow trephine can drill cancellous bone, the required incision is small, the trauma is small, and the cancellous bone taken out is more conducive t...

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