Patent Number: 8,574,195

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

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.

Inventors: Beyerlein; Dagmar (San Francisco, CA)

Assignee: Advanced Cardiovascular Systems, Inc.

International Classification: A61M 1/00 (20060101)

Expiration Date: 1/05/12017