Patent · US Active

Systems and methods for detecting tissue contact and needle penetration depth using static fluid pressure measurements

US8574195B2 · kind B2 · utility

0Cited by
50References
16Claims
0Family size

Assignee

Inventor

Key dates

Filing dateSep 5, 2003
Grant dateNov 5, 2013
Priority date—
Expiry dateNov 4, 2027

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG16H20/17
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

Abstract

Systems and methods for determining tissue contact and penetration depth are provided. In one aspect, the system includes a needle and a pressure measurement assembly. The needle, in one exemplary embodiment, includes a first end and a second end with at least one aperture located a predetermined distance from the first end. The fluid pressure measurement assembly is connected with a portion of the needle to measure pressure of fluid dispensed in the needle. The fluid pressure measurement assembly measures a first pressure of the fluid, a second pressure when the needle contacts tissue and a third pressure when the needle penetrates the tissue and the aperture becomes occluded.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.