Automatic stop bone drill based on current detection signal and feed control method thereof

Abstract

The invention discloses an automatic stop bone drill based on a current detection signal. The bone drill comprises a bone drill bit and a drill bit clamp, a drill bit connecting shaft and a coupling which are connected with the bone drill bit in turn and a direct current motor A driving the bone drill bit, and further includes a bone drill feed system using screw drive, a screw is provided with ascrew nut platform, and the screw nut platform is fixedly connected with a motor seat of the direct current motor A; the direct current motor A is in series connection with a Hall current sensor, andthe Hall current sensor detects the current change of the direct current motor A as a control basis for drill stopping during the drilling process. A feed control method for the automatic stop bone drill based on the current detection signal is also disclosed. It is ensured that the feed rate is slow enough during the surgical drilling process, the overshoot of the drill bit caused by the inertiaof the rotation stopping of the motor is reduced, and the surgical procedure is safe.

Description

technical field [0001] The invention belongs to the frontier subject intersecting machinery and medicine, belongs to the technical field of neurosurgical instruments, and in particular relates to a self-stop skull drill based on a current detection signal and a feed control method thereof. Background technique [0002] With the aggravation of population aging, the incidence of hypertensive intracranial hemorrhage is increasing. If intracranial hematoma and blood stasis cannot be removed in time and quickly, it will bring disastrous consequences to patients. At present, skull drilling is commonly used to remove hematoma and lateral ventricle puncture and drainage to remove intracranial hematoma. This method solves the problem that craniotomy wounds are difficult to heal, but there are still uncontrollable factors of human operation. [0003] The outer layer of the human brain is covered by hair and skin. Under the scalp is the protective skull, and under the skull is the meni...

AI Technical Summary

Problems solved by technology

Skull drilling is an important step in minimally invasive brain surgery. Existing drilling equipment is manual. The drilling equipment does not have any device to control the drilling. The doctor feels the change of resistance with his hand during the drilling process, and then adjusts it. Drilling process to avoid injury to the patient due to over-feeding through the meninges

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