Reversing nuclear magnetic compatible puncture needle clamp

Abstract

The invention discloses a reversing nuclear magnetic compatible puncture needle clamp which comprises a needle installing module, a reversing module and a frame module. The needle installing module comprises a rotary driving mechanism, wherein a rotating output end of the rotary driving mechanism is connected with an end cover, a nut is arranged in a lead screw inner hole and is in threaded connection with the lead screw inner hole, a cylindrical casing is sleeved on the lead screw, a plurality of conic grooves are arranged on the outer wall of the cylindrical casing at intervals along the axial direction and the circumferential direction, and a sliding block capable of being in slide match with a spline groove on a casing inner hole is arranged in the casing inner hole. The reversing module comprises the end cover and a spring seat tube which are sequentially and fixedly connected, wherein a releasing button with an inner hole arranged inside is inserted into an inner hole of the end cover and can be slidingly matched with the inner hole of the end cover, a pin seat is arranged in an inner hole of the spring seat tube, and a plurality of stop pins capable of being in inserting match with the conic grooves are arranged in the circumferential direction of the pin seat. The frame module comprises a reversing main body with an inner hole arranged inside, wherein the reversing main body and a base can be fixedly connected in different directions. The clamp improves accuracy of operations.

Description

technical field [0001] The invention relates to the field of medical equipment, belongs to the frontier subject intersecting machinery and medicine, and in particular relates to an acupuncture manipulator mechanism applied in a nuclear magnetic resonance environment. Background technique [0002] At present, minimally invasive brachytherapy is the main method for local radiotherapy of chest, abdomen and pelvic soft tissues. During the operation, radioactive seeds are implanted into the prostate and thoracoabdominal soft tissues through acupuncture for local radiation therapy. However, acupuncture surgery performed manually usually has the disadvantages of poor precision and incapability of real-time imaging; for pre-planned trajectories, the expected effect may not be achieved due to the movement of the patient's body and the stimulation of soft tissue by acupuncture , and because the acupuncture directions of the chest, abdomen, and pelvis are different, the operation conv...

AI Technical Summary

Problems solved by technology

The existing acupuncture mechanism has an external screw nut drive, which is often large in size and not compact in structure, which is not conducive to the realization of modular requirements

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