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Mechanical bone extractor with stop unit

A technology of stop and handpiece, used in medical science, surgery, etc., can solve the problem of poor positioning of bone fragment thickness, and achieve the effect of improving cutting efficiency, shortening operation time, and improving cutting function.

Inactive Publication Date: 2012-07-18
吴东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bone fragments are cut by rotating the outer cylinder, but the thickness of the cut bone fragments cannot be well positioned

Method used

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  • Mechanical bone extractor with stop unit
  • Mechanical bone extractor with stop unit

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Embodiment Construction

[0009] The present invention will be further described below in conjunction with accompanying drawing:

[0010] figure 1 It is the principle diagram of the present invention, as shown in the figure, the present invention includes that the motor head (7) is connected with the bone-taking cylinder (2) through the drill rod (5), and the front end of the bone-taking cylinder (2) is formed with a knife tooth (3 ), characterized in that: the bone harvesting cylinder (2) is movable inside a stop cylinder (1) whose shape corresponds to the inner diameter of the bone harvesting cylinder (2); the rear end of the bone harvesting cylinder (2) has a The bottom hole (4); in addition, it also contains a cylindrical thimble (6) whose diameter is smaller than the bottom hole (4).

[0011] When the present invention is in use, by calculating the amount of bone in the bone-taking area and judging the important anatomical structures, according to the amount of bone to be taken, a bone-taking cyl...

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Abstract

The invention relates to the class of bone breakers, bone drills or bone chisels and trepans, in particular to a mechanical bone extractor with a stop unit. The technical scheme includes that the mechanical bone extractor comprises a motor head (7), the motor head (7) is connected with a bone extracting cylinder (2) through a drill pipe (5), and cutting teeth (3) are formed at the front end of the bone extracting cylinder (2). The mechanical bone extractor is characterized in that a stop cylinder (1) in the shape corresponding to the inner diameter of the bone extracting cylinder (2) is movably mounted in the bone extracting cylinder (2), bottom holes (4) are arranged at the back end of the bone extracting cylinder (2), and the mechanical bone extractor further comprises a cylindrical ejector needle (6) with the diameter smaller than that of each bottom hole (4). The mechanical bone extractor with the stop unit has the advantages that bones can be extracted more quickly and accurately, bone extracting efficiency is increased while wound of patients is reduced since the mechanical bone extractor can acquire accurate bone mass and simultaneously have a stop function.

Description

[0001] technical field [0002] After retrieval, the present invention relates to the category of A61B17 / 16 bone crusher; bone drill or osteotome; trepan drill in the International Patent Classification (IPC), especially belongs to a machine-used bone extractor with a stop device. Background technique [0003] When making bone defect models in animal experiments and taking bones from donor sites in bone defect repair operations, bone extractors are needed. Existing bone extractors include a bone extraction outer cylinder and a handle with incisors. The bone fragment was cut by rotating the outer cylinder, but the thickness of the cut bone fragment could not be well positioned. When taking bone from an area with important deep anatomical structures, too much bone taking is easy to damage the important structure, and if bone taking is not enough, it needs to be taken again. Contents of the invention [0004] The purpose of the present invention is to provide a machine-...

Claims

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Application Information

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IPC IPC(8): A61B17/32A61B17/56
Inventor 吴东李桐军陈江
Owner 吴东