A semi-open sleeve for guiding metatarsal intramedullary fixation

Abstract

This utility model relates to the field of medical device technology and proposes a semi-open sleeve for guiding palmar / metatarsal intramedullary fixation, including an outer tube and an inner sleeve. The inner sleeve is coaxially arranged with the outer tube, and the outer tube is located at the top of the inner sleeve. The inner sleeve is fixedly disposed within the outer tube and has a clearance groove. The sleeve has a fixed end and a working end, and the working end also has fixing teeth for abutting against the palmar / metatarsal bones. The inner sleeve is also provided with a sliding groove and a locking groove, and a sliding plate is slidably disposed within the sliding groove. The sliding plate is connected to the outer tube via a connecting rod, and the inner sleeve is provided with a limiting groove, within which the connecting rod is located. This technical solution enables rapid and accurate insertion of the intramedullary fixation needle after positioning and drilling during palmar / metatarsal intramedullary fixation, without removing the sleeve, resulting in a smoother operation.

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