A method and device for automatic positioning of indwelling needle in punctured vein

Abstract

Disclosed is a method and a device for automatic positioning of an indwelling needle in a punctured vein. The method comprises: collecting image data of a target blood vessel, the image data comprising a set horizontal axis value of the target blood vessel in an image coordinate system; traversing pixels of the image data in a set window according to the set horizontal axis value and a first set step length thereof in a vertical axis direction, to acquire an image feature of the target blood vessel in the image data; determining an approximate-detection center position of the target blood vessel according to the image feature of the target blood vessel; searching, by using as search points horizontal axis values determined according to a horizontal axis value of the approximate-detection center position, for vertical axis values of upper and lower blood vessel walls within vertical axis values of the approximate detection center position; and determining a range of a puncture point on the target blood vessel and a depth value of the target blood vessel according to the found vertical axis values of the upper and lower blood vessel walls. The method and the device can automatically position a puncture position of a puncture mechanism at a target blood vessel with high precision, reducing manpower training costs of hospitals and avoiding a needle-stick risk during manual puncture.

Description

technical field [0001] The invention relates to the technical field of medical B-ultrasound image processing, in particular to an automatic positioning method and device for an indwelling needle in a punctured vein. Background technique [0002] PICC (Peripherally Inserted Central Catheter) provides a safe and effective drug delivery route for patients who need long-term intravenous infusion of irritating or high-concentration drugs, which can effectively reduce repeated venipuncture and reduce The incidence of phlebitis is reduced, and it can be left in place for a long time. [0003] Among the puncture methods, there are mainly the traditional blind puncture method and the ultrasound-guided puncture method. The former is in the state of emergency, and the success rate of blind puncture by nurses is very low for patients with emergency conditions and poor vascular conditions, while new nurses need to After a long clinical work practice to accumulate blind puncture experien...

AI Technical Summary

Problems solved by technology

[0004] However, the B-ultrasound machine can only provide the position and depth information of the image, and cannot intuitively reflect the puncture depth and needle route of the indwelling needle during puncture, which causes clinical difficulties such as puncture

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