CATHETER BASED IMPLANTED WIRELESS PRESSURE SENSOR

• US 20070191717A1
• Filed: 02/13/2007
• Published: 08/16/2007
• Est. Priority Date: 02/13/2006
• Status: Abandoned Application

• Current Assignee: Drexel University
• Original Assignee: Drexel University
• Inventors: Rosen, Arye, Walinsky, Paul
• Application Number:
  US11/674,426
• Publication Number:
  US 20070191717A1
• Time in Patent Office: Days
• US Class Current: 600/485
• CPC Class Codes: A61B 5/02152 specially adapted for venous pressure
• CPC Class Codes: A61B 5/07 Endoradiosondes
• CPC Class Codes: A61B 5/6876 Blood vessel
• CPC Class Codes: A61B 5/6884 Clamps or clips

Abstract

A catheter based implantable wireless pressure sensor and associated electronic circuitry for transmission of hemodynamic status of a subject.

Claims

1. An implantable apparatus for measuring hemodynamic status comprising:

(a) a pressure sensor having an electrical capacitance that varies with pressure;

(b) a pressure sensing circuitry connected to the pressure sensor for making a measurement of the capacitance of the pressure sensor;

(c) a wireless transmitter connected to the pressure sensing circuitry for transmitting the measurement of the pressure sensor.

2. The implantable apparatus of claim 1, further comprising:

a battery for powering the pressure sensing circuitry and the wireless transmitter, wherein the battery is connected to the pressure sensing circuitry and the wireless transmitter.

3. The implantable apparatus of claim 1, wherein:

the wireless transmitter and the active pressure sensing circuitry are powered by a microwave signal.

4. The implantable apparatus of claim 1, wherein:

the pressure sensor is enclosed in a catheter used for a cardiac pacemaker.