Four-degree-of-freedom fixing support for lung puncture operation in hospital

Abstract

The invention discloses a four-degree-of-freedom fixing support for a lung puncture operation in a hospital. The fixing support comprises a circular supporting base, a rotatable linear guide rail anda puncture needle set, the circular supporting base is mainly composed of an outer ring gear and a circular sliding rail, the rotatable linear guide rail is supported by an arc-shaped sliding block, the puncture needle set is in sliding connection with the rotatable guide rail through a stud and a polish rod, the whole rotatable linear guide rail drives the gear through the motor to rotate aroundthe center of an arc-shaped support seat, two screw rods in the rotatable linear guide rail are driven by the motor to rotate around a straight line parallel to the axis of the guide rail, and the needle puncture set moves in the axial direction of the rotatable guide rail and swings in the plane perpendicular to the axial direction of the guide rail. The fixing support is compact in structure andeasy to control, horizontal movement of a control target and rotation of two rotating shafts are achieved through combined transmission of the gear, a rack and the screws, and the motor is not directly connected with the control target.

Description

technical field [0001] The invention belongs to a puncture operation control device in the field of medical device manufacturing and application, and in particular relates to a four-degree-of-freedom fixed support used in hospital lung puncture operations. Background technique [0002] Clinically, if a lesion is found in the lungs through CT examination, but it is not sure whether it is caused by infection, non-lesion infection, or tumor, especially if malignant tumor cannot be ruled out, a lung biopsy is required to clarify the nature of the lesion. Lung puncture is to puncture into the lesion under the positioning of CT to take out some tissues for routine inspection. However, CT-guided puncture also has disadvantages: because the imaging is not timely, respiratory movement will cause errors in accurate positioning, and the patient must be trained to master the phase of breathing. When the puncture needle needs to form a certain angle with the cross-section, the puncture ...

AI Technical Summary

Problems solved by technology

However, CT-guided puncture also has disadvantages: because the imaging is not timely, respiratory movement will cause errors in accurate positioning, and the patient must be trained to master the phase of breathing.

But too many degrees of freedom control means more motor input and more transmission mechanisms. At the same time, the fixture must be attached to the patient's chest, so the device needs to be compact

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