Dong Chon Shin

US Patent:

20160310020, Oct 27, 2016

Filed:

Sep 11, 2014

Appl. No.:

15/104896

Inventors:

- Elyria OH, US
David DiPAOLA - North Potomac MD, US
Dong lk SHIN - Poway CA, US
Matthew J. POLLMAN - San Francisco CA, US

International Classification:

A61B 5/0215
A61B 5/00

Abstract:

A system having a catheter having a distal pressure sensitive capacitive element providing an impedance and phase shift which varies responsive to the amount of pressure from blood external the catheter, a detector having electronics for determining the impedance and/or phase shift. This impedance and or phase shift corresponds to the pressure of the blood about the distal end of the catheter. When the catheter is inserted into a patient's body, the impedance or phase shift is detected quasi wirelessly without special signal communication means like optical fibers or electrical wires from outside the patient's body utilizing the patient as a ground path and the catheter shaft as an electrical conductor.

US Patent:

20160022154, Jan 28, 2016

Filed:

Mar 11, 2014

Appl. No.:

14/776070

Inventors:

- Elyria OH, US
David DIPAOLA - North Potomac MD, US
Dong Ik SHIN - Poway CA, US
Matthew J. POLLMAN - San Francisco CA, US

International Classification:

A61B 5/0215
A61B 5/00

Abstract:

A system for detection of blood pressure in a blood vessel includes a guide wire and a LC resonance circuit provided at a distal end of the guide wire. The resonance circuit may be a non-LC resonance circuit responsive to changes in pressure of fluid external to the guide wire such that the resonance circuit has a resonance frequency that varies in accordance with changes in pressure of the external fluid.