WEARABLE OPTICAL PULSE PLETHYSMOGRAPHY SENSORS OR PULSE OXIMETRY SENSORS BASED WEARABLE HEART RATE MONITORING SYSTEMS

• US 20090227853A1
• Filed: 03/02/2009
• Published: 09/10/2009
• Est. Priority Date: 03/03/2008
• Status: Abandoned Application

• Current Assignee: Ravindra Wijesiriwardana
• Original Assignee: Ravindra Wijesiriwardana
• Inventors: Wijesiriwardana, Ravindra
• Application Number:
  US12/395,791
• Publication Number:
  US 20090227853A1
• Time in Patent Office: Days
• US Class Current: 600/324
• CPC Class Codes: A61B 5/02427 Details of sensor
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6815 Ear
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

A new PPG/SpO₂ based ear hook sensor was constructed with the PPG/SpO₂ sensors are attached to the skin in the regions of superficial artery and vein (010) and posterior auricular artery and vein around the ear (011 of FIG. 1C). An ear wearable heart rate monitor is constructed with PPG/SpO₂ sensors are attached to the skin in the regions of superficial artery and vein (010) and posterior auricular artery and vein around the ear (011 of FIG. 1C) (temporal region of the head). This sensor system is less vulnerable to motion artifacts hence capable of producing high quality PPG signals under motion conditions such as running and exercising.

Claims

1. An optical PPG/SpO₂ sensor and sensor embodiment comprise of;

(a) An ear hook for mounting the sensor;

(b) An ear plug connected to the ear hook so that the hook can be connected well to the wearer;

(c) At least one PPG/SpO₂ sensor or PPG/SpO₂ sensors of the embodiment attached to the temple region of the head of the wearer;

(d) Electrical signals and power pathways to the sensors from a control unit.

2. A device according to claim 1 where the sensors are used for monitoring heart rate and blood gas concentrations.

3. An ear wearable wireless physiological information monitoring system comprising sensors of claim 1.

4. A wearable wireless physiological information monitoring system connected to a device according to claim 1, which can be embedded or attached to following wearable devices including:

jackets, head bands, a cap, a hat, a helmet, a swimming cap, a pair of optical glasses, goggles, a shirt, a chest strap or a trouser.

5. Use of devices according to claim 3 and claim 4 to monitor the heart rate, respiration information or blood gas concentration of the wearer.

6. A device according to claim 3 or claim 4 having a speaker for the audio feed back of the physiological information.

7. A sensor recording to claim 1 having a speaker for the audio feed back to the wearer.

8. A sensor according to claim 1 or claim 7 having a temperature sensor in the ear plug.

9. A wrist wearable display, PDA, smart phone or external base station for displaying, recording, processing and analyzing the information from the devices in claim 3 and claim 4.

10. A device according to claim 3 or claim 4 capable of transmitting information via public data networks to a remote station for display, analyzing, recording and decision making.

11. A device according to claim 3 or claim 4 having control press button switches for the controlling of the system.

12. A device according to claim 1 or claim 8 where the adhesion of the sensors to the skin is done by using transparent double side sticky tape or sticky pads or with double side sticky tape or sticky pads with a hole for the optical sensor area.

13. A device according to claim 3 having a sensor unit according claim 1 or claim 8 on one ear, the wireless signal conditioning and control unit on the other ear and an electrical conduction cables connecting them.