Interventional therapy needle positioning method and interventional therapy needle

Abstract

The invention provides an interventional therapy needle positioning method for positioning an interventional therapy needle in real time relative to a device coordinate system during an interventional operation process and a corresponding interventional therapy needle. The interventional therapy needle comprises a needle head, a needle rod and a needle handle, wherein the needle head and the needle rod can extend into human tissue during an operation. The interventional therapy needle positioning method comprises the following step: determining the position of a needle point by tracking the position of a positioning sensor during the operation, wherein the positioning sensor is fixedly arranged on the needle rod before the operation. Preferably, the positioning sensor is fixedly arranged on the needle rod in a position close to the needle head. Since the positioning sensor is fixedly arranged on the needle rod and especially is fixedly arranged on the needle rod in a position close to the needle head and small deformation or no deformation occurs in the position, the deformation (generally large in the middle of the needle) of the needle rod has little influence on the deviation relationship between the positioning sensor and the needle point, and the position of the needle point in the device coordinate system can be acquired accurately.

Description

technical field [0001] The present invention generally relates to interventional treatment needles used in interventional operations, and more particularly relates to an interventional treatment needle positioning method for positioning the interventional treatment needle relative to a device coordinate system during the interventional operation and a corresponding interventional treatment needle. Background technique [0002] Interventional surgery is the development method of modern surgery. The difference between interventional surgery and traditional surgery is that no surgery is required, and only a small incision is needed to insert special interventional therapy needles such as freezing needles, thermal ablation needles, and particle implantation needles. , guide wire, etc. are pierced into the lesion or surgical target in the human body, and then achieve the purpose of treatment through various physical / chemical effects, so as to solve the problems of tumor resection ...

AI Technical Summary

Problems solved by technology

However, it has been found in practice that the position of the needle tip of the interventional treatment needle thus obtained may seriously deviate from the actual position, and the error is unacceptable to surgery.

Therefore, in practice, the positioning of the interventional therapy needle relative to the lesion area is still heavily dependent on the doctor's experience

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