DISPOSABLE AND DETACHABLE SENSOR FOR CONTINUOUS NON-INVASIVE ARTERIAL BLOOD PRESSURE MONITORING

• US 20120059233A1
• Filed: 09/07/2011
• Published: 03/08/2012
• Est. Priority Date: 09/07/2010
• Status: Active Grant

• Current Assignee: CNSystems Medizintechnik AG
• Original Assignee: CNSystems Medizintechnik AG
• Inventors: Grüllenberger, Rupert, Fortin, Jürgen, Huber, Christian
• Granted Patent: US 8,798,703 B2
• Time in Patent Office: Days
• US Class Current: 600/323
• CPC Class Codes: A61B 2560/0406 specially shaped apparatus housings
• CPC Class Codes: A61B 2560/0443 Modular apparatus
• CPC Class Codes: A61B 2562/164 the sensor is mounted in or on a conformable substrate or carrier
• CPC Class Codes: A61B 5/02241 of small dimensions, e.g. adapted to fingers
• CPC Class Codes: A61B 5/02255 the pressure being controlled by plethysmographic signals, e.g. derived from optical sensors
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6831 Straps, bands or harnesses
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A sensor system for continuous non-invasive arterial blood pressure (CNAP) is provided. The CNAP-sensor comprises of a base portion and a detachable and disposable portion. The base portion is connected to a control system. The disposable portion is for attachment to a human body part. The CNAP-sensor system includes a photo-plethysmographic (PPG) system having at least one light source, at least one light detector, electrical supplies, light coupling systems, one or more connectors, and a cuff including air supplies.

Claims

1. A sensor system for the measurement of one or more physiological signals comprising:

a base portion connected to a measurement unit, the base portion being reusable; and

a detachable portion secured to the base portion, the detachable portion adapted to receive a human body part and being disposable;

wherein the sensor system includes a plethysmographic (PPG) system, the PPG system including at least one light source, at least one light detector, an electrical connector to connect the at least one light source to an electrical supply, and an air system; and

wherein at least a part of the PPG system is located on the base potion and at least a part of the PPG system is located on the detachable portion.

2. A sensor according to claim 1, wherein the at least one light detector, an electrical connector, an air supply, and air connectors are located on the base portion and an air-cuff is located on the detachable portion.

3. A sensor according to claim 2, wherein the at least one light source and an electrical connector are located on the detachable portion.

4. A sensor according to claim 2, wherein the base portion includes at least one light source and the detachable portion includes a fiber optic system.

5. A sensor according to claim 1, wherein the at least one light source, the electrical connector, air supplies, and air connectors are located on the base portion and an air-cuff is located on the detachable portion.

6. A sensor according to claim 5, wherein the at least one light detector and an electrical supply to the at least one light detector is located on the detachable portion.

7. A sensor according to claim 5, wherein the base portion includes at least one light source and the detachable portion includes a fiber optic system.

8. A sensor according to claim 1, wherein the base portion is a semi-rigid tube that includes the at least one light source, the at least one light detectors, the electrical connector and electrical supply, air supplies, and air connectors.

9. A sensor according to claim 8, wherein the detachable portion is a coat with fixation rings.

10. A sensor according to claim 1, wherein the detachable portion is a plaster including the at least one light source, the at least one light detector, and the electrical connector.

11. A sensor according to claim 10, wherein an air cuff including an air-supply and an air-connection is located on the base portion.

12. A sensor according to claim 1, wherein the detachable portion includes a liquid filled reservoir and an empty reservoir.

13. A sensor according to claim 12, wherein the liquid is a disinfectant.

14. A method for mounting a detachable portion onto a base portion of a sensor comprising a reservoir being opened and a liquid from the reservoir flowing into an empty reservoir.

15. A method according to claim 14, wherein the liquid is used for directing light from a light source or a light detector to a human tissue.

16. A method according to claim 15, wherein the liquid is used for disinfection after the use of the sensor.