Back-moving prevention type nail extracting device for orthopedics department

Abstract

The invention discloses a back-moving prevention type nail extracting device for the orthopedics department. The nail extracting device comprises an inner column and a sleeve, and the inner column internally sleeves the sleeve and comprises a limiting section, a locking section, a guide rail section and a nail extracting section sequentially from top to bottom. The limiting section is a stepped limiting part, and the diameter of the lower end of the limiting section is smaller than that of the upper end; the diameter of the locking section is smaller than that of the guide rail section and thenail extracting section; the sleeve is in a cylindrical structure with the closed upper end, the upper end of the sleeve is provided with a traction hole, the direction of the traction hole is perpendicular to the axis of the sleeve, the sleeve is internally provided with a buffer cavity and a guide rail cavity sequentially from top to bottom, and the limiting section and the locking section of the inner column are positioned in the buffer cavity. The back-moving prevention type nail extracting device for the orthopedics department has advantages that under the action of a steel ball and an extrusion wall, the inner column and the sleeve are locked, unidirectional traction of the inner column and the sleeve is realized, back moving is avoided effectively, and discomfort in a nail extracting process is relieved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an orthopedic anti-retraction nail removal device. Background technique [0002] In fracture surgery, the use of steel nails and steel plates to fix the fracture site is a commonly used surgical method in existing operations, and the steel nails need to be taken out after being implanted in the human body for a period of time. In the operation of taking steel nails, because the steel nails exist in people's bodies for a long time, they will be connected with human bones, which makes it very difficult for doctors to take them out, and most of the nail taking devices generally use manual methods, so in the process of taking nails However, due to the unreasonable structural design of some devices, the nail removal often occurs, which brings discomfort to the patient. Contents of the invention [0003] The technical problem to be solved by the present invention is to overc...

AI Technical Summary

Problems solved by technology

In the operation of taking steel nails, because the steel nails exist in people's bodies for a long time, they will be connected with human bones, which makes it very difficult for doctors to take them out, and most of the nail taking devices generally use manual methods, so in the process of taking nails However, due to the unreasonable structural design of some devices, the nail removal often occurs, which brings discomfort to the patient.

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