Astragalus drilling apparatus

Abstract

The invention discloses astragalus drilling apparatus comprising a guide needle and a conduit; the guide needle is inserted in the conduit; the conduit comprises a straight tube section and an arc section; a sawtooth portion is installed at the front end of the arc section; a back side of the arc section is provided with an observation opening; the straight tube section is wrapped by a handle; theguide needle is bendable; the guide needle is provided with a first end and a second end; a mark is arranged between a first end and a second end of the guide needle; the first end is connected withan electric drill and the guide needle is driven by the electric drill to drill the astragalus downward; the second end is trigonous tip shaped; the mark on the guide needle is observed through the observation opening to record the position of the guide needle and control the depth of the drilling according to the mark on the guide needle.

Description

Technical field [0001] The invention relates to the technical field of medical devices, in particular to a talar drilling device. Background technique [0002] Ankle sprain is the sports injury with the highest incidence. Some sprained patients will be combined with talar cartilage injury and bone edema. The damaged cartilage and subchondral bone are difficult to repair themselves. The patient has symptoms such as swelling and pain, which seriously affects the quality of life and motor function. , If not operated in time, it can progress to traumatic arthritis or even talus necrosis. [0003] At present, the surgical methods for talar osteochondral injury include arthroscopic cleaning, drilling, microfracture, and osteochondral transplantation. Arthroscopic drilling has the least trauma to the patient and has a good prognosis. The injury is deep in the talus. Drill a hole with a depth of more than 10mm to allow the deep blood to flow out to achieve the purpose of decompressing the...

AI Technical Summary

Problems solved by technology

figure 1 The drilling method in the prior art shown requires the use of an electric drill 100 to pass through the medial malleolus, which increases the secondary damage to the tibia 101 and articular cartilage of the medial malleolus, increases the incidence of postoperative complications, and requires the operator's experience Higher requirements for texture and feel, often require a special locator or repeated attempts to succeed

At the same time, when using this drilling method, the operator cannot know the depth of the drilling, so it is difficult to achieve the purpose of precise treatment, which affects the drilling effect

Additionally, if the lesion site 104 is located on the inner surface of the medial malleolus tibia, prior art techniques do not permit drilling of this site from within the joint

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