Automatic positioning method and device of indwelling needle in puncturing vein vessel

Abstract

The invention provides an automatic positioning method and device of an indwelling needle in puncturing a vein vessel. The automatic positioning method comprises the following steps: collecting image data of a target vessel, wherein the image data contains a horizontal coordinate value of the target vessel in an image coordinate system; according to the set horizontal coordinate value and a first set step length of the horizontal coordinate value in a longitudinal coordinate direction, traversing pixels of the image data in a set window, and acquiring image characteristics of the target vessel in the image data; according to the image characteristics of the target vessel, determining a coarse detection center position of the target vessel; taking a horizontal coordinate determined according to the horizontal coordinate of the coarse detection center position as a searching point, searching longitudinal coordinate values of upper and lower vascular walls in the longitudinal coordinate value of the coarse detection center position; and according to the searched longitudinal coordinate values of the upper and lower vascular walls, determining a range where a puncture point of the target vessel is located and a depth value of the target vessel. The automatic positioning method and device can automatically position a puncture position of a puncture mechanism in the target vessel with high accuracy, lower the manpower training cost of a hospital and prevent sticking risk by artificial puncture at the same time.

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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