Wristwatch with the function of sensing heart pulses

• US 6,982,930 B1
• Filed: 07/27/2004
• Issued: 01/03/2006
• Est. Priority Date: 07/27/2004
• Status: Expired due to Fees

• Current Assignee: Chin-Yeh Hung
• Original Assignee: Chin-Yeh Hung
• Inventors: Hung, Chin-Yeh
• Primary Examiner(s): Bradley, P. Austin
• Assistant Examiner(s): GOODWIN, JEANNE M
• Application Number:
  US10/898,945
• Time in Patent Office: 525 Days
• Field of Search: 368/10, 368/281, 368/278, 600500-503
• US Class Current: 368/10
• CPC Class Codes: A61B 5/02438 with portable devices, e.g. worn by the patient
• CPC Class Codes: A61B 5/0245 by using sensing means generating electric signals, i.e. ECG signals
• CPC Class Codes: A61B 5/681 Wristwatch-type devices
• CPC Class Codes: G04G 21/025 for measuring physiological data

Abstract

A wristwatch with the function of sensing heart pulses having a watch housing on whose surface a liquid crystal display (LCD) is disposed. A voltage sensor is positioned within the watch housing for detecting the voltage frequency change during the blood circulation. The voltage sensor includes two electric terminals one of which is mounted on a bottom cover of the watch housing to permit a close contact with one hand wrist, and the other consists of two pieces of conductive rubber strips on the front surface of the insulated wristband for fingers of another hand to touch thereon. Both electric terminals are coupled by both hands while the detected voltage change frequency undergoes a static electric filtration by inductors and is transmitted to a filter shaping circuit for creating signals that are brought into a central processing unit to perform the processing and the calculating actions thereof. So, the processed result of the heart pulse rate is presented on the LCD.

Claims

1. A wristwatch with the function of sensing heart pulses comprising:

a) a watch housing made of nonconductive material, the watch housing having a crystal at the front side thereof;

b) a liquid crystal display positioned under the crystal of the watch housing;

c) a voltage sensor for detecting the voltage frequency change created by blood circulation within a human body, the voltage sensor having a plurality of components disposed on a circuit board under the liquid crystal display;

d) a bottom cover made of conductive material and positioned at the bottom side of the watch housing, at least a conducting connection element being interposed between the bottom cover and the circuit board for creating an electric connection such that the bottom cover serves as a first electric terminal in close contact with the wrist of a first hand of a watch wearer;

e) a wristband made of nonconductive material and attached to both ends of the watch housing;

f) two conductive rubber strips positioned at the top of the wristband, the conductive rubber strips each having a conducting pin at both ends of the watch housing for creating an electric connection between the conductive rubber strips and the circuit board of the voltage sensor such that the conductive rubber strips serves as a second electric terminal to permit the contact with two fingers of a second hand of the watch wearer; and

g) three inductors disposed within the voltage sensor, the inductors being coupled with both conductive rubber strips of the second electric terminal and the bottom cover of the first electric terminal so that the detected voltage change frequency undergoes a static electric filtration by means of the inductors and is transmitted to a filter shaping circuit for creating signals that are brought into a central processing unit with an internal or an external amplifying circuit and then amplified by the amplifying circuit for central processing unit to perform the processing and the calculating actions thereof whereby the processed result of the heart pulse rate in beats per minute can be presented on the liquid crystal display.

2. The wristwatch with the function of sensing heart pulses as recited in claim 1 wherein an annular metal piece is disposed around the crystal for protecting the watch housing against shock.

3. The wristwatch with the function of sensing heart pulses as recited in claim 1 wherein both conductive rubber strips have an antislip surface extended in a zigzag manner.