Wrist-worn portable device and a wrist-worn pulse wave measuring device

• US 5,735,800 A
• Filed: 05/08/1996
• Issued: 04/07/1998
• Est. Priority Date: 05/12/1995
• Status: Expired due to Term

• Current Assignee: Seiko Epson Corporation (Seiko Group), Seiko Instruments Incorporated (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group), Seiko Instruments Incorporated (Seiko Group)
• Inventors: Yasukawa, Naoaki, Kawata, Masayuki
• Primary Examiner(s): Bahr, Jennifer
• Assistant Examiner(s): Ruddy, David M.
• Application Number:
  US08/646,456
• Time in Patent Office: 699 Days
• Field of Search: 128/690, 128/664-667, 128/633, 224/165, 224/172
• US Class Current: 600/503
• CPC Class Codes: A61B 5/02438 with portable devices, e.g. worn by the patient

Abstract

For the purpose of providing, by only improving the shape of the device body, at a low cost and without impairing user comfort a wrist-worn portable device and a wrist-worn pulse wave measuring device whereby the device body does not turn unnecessarily around the wrist. A wrist-worn pulse wave measuring device 1 attaches device body 10 by means of wrist band 12 to the wrist, and attaches sensor unit 30 to the base of a finger by means of a band for holding the sensor. At the end of cable 20 leading from sensor unit 30 is formed connector piece 80, which is attached by simply sliding connector 70 in the direction of twelve o'"'"'clock. Because device body 10 has a turning stop 108 forming an approximately 115° angle to the back, device body 10 will not turn unnecessarily even if it is turned in the direction of six o'"'"'clock or twelve o'"'"'clock on a wristwatch.

Claims

1. wrist-worn portable device, comprising:

a device body comprising;

a main case including a turning stop extending therefrom in a substantially 6 o'"'"'clock direction thereof for controlling rotation of said device body when worn around a wrist of a user;

a back member, connected to said main case, having a shape to accommodate a top of the wrist of the user; and

a display unit arranged in said main case for displaying information;

wherein a center of gravity of said device body in a three and nine o'"'"'clock directions on said wrist-worn portable device is offset from a center position in the three o'"'"'clock direction; and

a wrist band operatively coupled to said main case for detachably securing said device body to the user.

2. A wrist-worn portable device according to claim 1, wherein said turning stop extends at an angle within the range from approximately 105°

to approximately 125°

to a back member of said main case.

3. A wrist-worn portable device according to claim 1,

wherein said main case further comprises a data processing circuit;

wherein said wrist-worn portable device further comprises

a sensor unit having a light emitting unit and a light receptor facing a finger surface of the user;

a cable extending from said sensor unit for electrically connecting said light receptor to said data processing circuit; and

wherein said display unit displays pulse information in accordance with said data processing circuit and said light receptor.

4. A wrist-worn portable device according to claim 3, further comprising connecting means enabling said cable to be freely connected to said device body.

8. A wrist-worn portable device according to claim 1, wherein

said device body comprises a horizontally long main case, wherein a dimension in three o'"'"'clock and nine o'"'"'clock directions is longer than a dimension in the six o'"'"'clock and twelve o'"'"'clock directions, and

said wrist band is connected to said main case at a position offset in the three o'"'"'clock direction from the center position of said main case in the three o'"'"'clock and nine o'"'"'clock directions.

9. A wrist-worn portable device according to claim 8, wherein said main case comprises a flat battery and a flat piezoelectric element, said piezoelectric element and battery being arranged inside said main case in the three and nine o'"'"'clock directions on said wrist-worn portable device.

11. A wrist-worn portable device according to claim 8,

wherein said main case comprises a data processing circuit;

wherein said wrist-worn portable device further comprises

a sensor unit having a light emitting unit and a light receptor facing a finger surface of the user;

a cable extending from said sensor unit for electrically connecting said light receptor to said data processing circuit; and

wherein said display unit displays pulse information in accordance with said data processing circuit and said light receptor.

5. A wrist-worn portable device, comprising:

a device body comprising;

a main case comprising a turning stop extending therefrom in a substantially 6 o'"'"'clock direction thereof for controlling rotation of said device body when worn around a wrist of a user;

a data processing circuit; and

a back member, connected to said main case, having a shape to accommodate a top of the wrist of the user; and

a display unit arranged in said main case for displaying information;

wherein a center of gravity of said device body in a three and nine o'"'"'clock directions on said wrist-worn portable device is offset from a center position in the three o'"'"'clock direction;

a wrist band operatively coupled to said main case for detachably securing said device body to the user;

a sensor unit having a light emitting unit and a light receptor facing a finger surface of the user;

a cable extending from said sensor unit for electrically connecting said light receptor to said data processing circuit;

wherein said display unit displays pulse information in accordance with said data processing circuit and said light receptor; and

connecting means enabling said cable to be freely connected to said device body, comprising;

a connector comprising a first terminal group disposed on a surface of said device body at a portion thereof corresponding to said turning stop;

a connector member formed at an end of said cable and comprising a second terminal group for electrically connecting with said first terminal group when connected to said connector; and

an engaging mechanism for detachably securing said connector member to said connector by partially engaging said connector member and connector.

6. A wrist-worn portable device according to claim 5, wherein said engaging mechanism partially engages said connector member and connector when said connector member is slid over said connector in the six o'"'"'clock direction to twelve o'"'"'clock direction on said wrist-worn portable device.

7. A wrist-worn portable device according to claim 5, further comprising a connector cover to be engaged with said connector when said connector is disengaged from said connector member.

10. A wrist-worn portable device, comprising;

a device body comprising;

a main case having a back member having a shape to accommodate a top of a wrist of a user;

a display unit arranged in said main case for displaying information; and

a turning stop extending from said main case in a substantially 6 o'"'"'clock direction of said wrist-worn portable device for controlling rotation of said device body around the wrist by contacting one side of the wrist; and

a wrist band operatively coupled to said main case for detachably securing said device body to the user;

wherein said device body comprises a horizontally long main case, wherein a dimension in three o'"'"'clock and nine o'"'"'clock directions is longer than a dimension in the six o'"'"'clock and twelve o'"'"'clock directions;

wherein said wrist band is connected to said main case at a position offset in the three o'"'"'clock direction from the center position of said main case in the three o'"'"'clock and nine o'"'"'clock directions; and

wherein a center of gravity of said device body in the three and nine o'"'"'clock directions on said wrist-worn portable device is offset from a center position in the three o'"'"'clock direction.