CN2557086Y - Feed depth cootrollable osteotome - Google Patents

Abstract

A controllable feed depth osteotome relates to the devices for orthopaedic operations, more particularly for the acetabular triple osteotomy, and the utility model pertains to the technical field of medical devices. The utility model aims at solving the technical problem that the feed depth of the osteotome is easy to control when in use, so as to meet the using requirements of acetabular triple osteotomy. The constitution includes a handle part and a blade part, the improvement is that the blade part is bending, and the bending angle Alpha is 140 to 160 degrees. After the blade part in the utility model is bent correspondingly to the handle part, the bending part forms a feed block, so the blade part can only feed to a certain depth and the feed depth of the osteotome can be controlled; when in use, the utility model can prevent the excessive depth of the feed and the occurrences of damages of the surrounding tissues of the bone, nerves and blood vessels, as well as other medical accidents, so as to facilitate the operation of osteotomy, improve the safety of the operations and meet the using requirements of acetabular triple osteotomy, the utility model can not only be used for acetabular triple osteotomy, but can also be taken as the osteotomy device which has the need of control of the feed depth.

Description

Controlled depth of cut osteotome

Technical field

This utility model relates to bone surgery, especially acetabular bone three bone-culting operation apparatuses, belongs to the medical apparatus technical field.

Background technology

Existing osteotome has shank and blade, and shank and blade are on the same horizontal plane, is the stretched structure.The suitable osteotomy cutter as bones of limbs, vertebrae etc. of this kind osteotome uses.Acetabular bone three osteotomies be that new development is in recent years got up, be used for the treatment of acetabular dysplasia or femoral head and contain the not a kind of brand-new operation method of congruent osteopathia, osteotomy operation to ischium, pubic branch in the art is had relatively high expectations, do not allow feed dark excessively, to avoid damaging the accident of pelvic cavity internal organs, near nerve and blood vessel.The osteotome of existing staight shank structure can not be controlled depth of cut, so can't be used for this operation, for this reason, must develop the new construction osteotome.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of osteotome that is easy to control depth of cut, to satisfy the instructions for use of acetabular bone three osteotomies.

This utility model is realized with following technical solution:

A kind of controlled depth of cut osteotome, it comprises shank 1, blade 2, is improved to, and blade is bending, and bending angle α is 140～160 degree.

Above-mentioned controlled depth of cut osteotome, described blade is the flat chisel shape, the length L of flat chisel blade is that 15～25MM, width B are that 10～30MM, thickness C are 1～3MM.

Above-mentioned controlled depth of cut osteotome, described shank is a taper shank, and described flat chisel blade is carefully held to extend to expand by taper shank and is bent to form, and taper shank butt end both sides are provided with and grip groove 3.

After blade bent with respect to shank in this utility model, bending part forms feed to be stopped, make blade can only feed to certain degree of depth, so make the depth of cut of osteotome controlled.This utility model can prevent effectively that feed from injuring the generation of malpracticees such as bone surrounding tissue, nerve and blood vessel excessively deeply, has made things convenient for the bone-culting operation operation, has improved operation safety, can satisfy the instructions for use of acetabular bone three osteotomies.This utility model also can be used as other and need control the use of depth of cut osteotomy utensil except that being used for acetabular bone three osteotomies.

Description of drawings

Fig. 1 is this utility model structural representation;

Fig. 2 is the vertical view of Fig. 1.

The specific embodiment

Consult Fig. 1,2, in the illustrated embodiment, the angle α between blade 2 and the shank 1 is 150 degree, and the length of bending back blade is the depth of cut of permission, changes blade length and can obtain different depths of cut.The blade width can be in 10～30MM scope internal conversion, when being used for the ischium osteotomy, and desirable big width value, when being used for the pubis osteotomy, desirable less width value.Its thickness C of blade can be chosen in 1～3MM scope.Illustrated example is the ischium osteotome, blade is the flat chisel shape, flat chisel blade length L is that 20MM, width B are 2MM, shank is the rustless steel taper shank, the flat chisel blade is carefully held by taper shank and is extended expansion and be bent to form, with shank be integral structure component, taper shank butt end both sides respectively are provided with 4 and grip grooves 3, corresponding four fingers except that thumb grip when easy to use.

Claims (3)

1. controlled depth of cut osteotome, it comprises shank [1], blade [2], it is characterized in that blade is bending, bending angle α is 140～160 degree.

2. controlled depth of cut osteotome according to claim 1 is characterized in that described blade is the flat chisel shape, and flat chisel blade length L is that 15～25MM, width B are that 10～30MM, thickness C are 1～3MM.

3. according to the described controlled depth of cut osteotome of claim 2, it is characterized in that described shank is a taper shank, described flat chisel blade is carefully held to extend to expand by taper shank and is bent to form, and taper shank butt end both sides are provided with and grip groove [3].

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