Finger-type blood pressure meter with a flexible foldable finger cuff

• US 5,807,266 A
• Filed: 05/24/1996
• Issued: 09/15/1998
• Est. Priority Date: 05/25/1995
• Status: Expired due to Fees

• Current Assignee: Omron Healthcare Company Limited (Omron Corporation)
• Original Assignee: Omron Corporation
• Inventors: Itonaga, Kazunobu, Sano, Yoshihiko, Kobayashi, Toshiyuki, Inagaki, Takashi, Ashida, Tameo
• Primary Examiner(s): Nasser, Robert L.
• Application Number:
  US08/656,040
• Time in Patent Office: 844 Days
• Field of Search: 128/667, 128/672, 128/677, 128/680-3, 128/687-900, 128/686, 600/479, 600/485, 600/490, 600/493-6, 600/500-503, 600/499
• US Class Current: 600/499
• CPC Class Codes: A61B 5/02241 of small dimensions, e.g. adapted to fingers

Abstract

A finger-type blood pressure monitor which is smaller for portability (when not in use). The monitor has a foldable finger cuff which can be stored in a compact case when it is not in use.

Claims

1. A finger-type cuff assembly for use with a blood pressure monitor, comprising:

a main unit;

a cover attached to said main unit in a way such that said cover can open and close;

a foldable finger cuff of which a portion is fixed to an inside of said cover, said foldable finger cuff configured to open when said cover is opened; and

a chamber disposed between said main unit and said cover to contain said foldable finger cuff when said cover is closed.

2. A finger-type blood pressure monitor according to claim 1, wherein said foldable finger cuff is configured to assume a cylindrical shape when said cover is opened for measuring blood pressure, and is configured to be accommodated in said chamber when said cover is closed and is not in use.

3. A finger-type blood pressure monitor according to claim 2, wherein said cover has a hinge to open and close with respect to said main unit.

4. A finger-type blood pressure monitor according to claim 3, wherein said hinge is located on a side of said main unit closest to a thumb of a user when an index finger of the user is inserted into said foldable finger cuff.

5. A finger-type blood pressure monitor according to claim 4, further comprising an operating button on said main unit or said cover.

6. A finger-type blood pressure monitor according to claim 4, further comprising a display on said cover.

7. A finger-type blood pressure monitor according to claim 3, further comprising a device to fix the maximum angle to which said cover can open so that a sensor mounted in said foldable finger cuff to detect a pulse of said index finger will be positioned in a vicinity of an artery of said index finger.

8. A finger-type blood pressure monitor according to claim 2, wherein an outer periphery of said foldable finger cuff is shielded by a plurality of collars comprising a plurality of peripheral plates connected by hinges.

9. A finger-type blood pressure monitor according to claim 8, wherein said foldable finger cuff comprises a wall on either end of said peripheral plates which shields a lateral portion of said cuff.

10. A finger-type blood pressure monitor according to claim 2, further comprising a cylindrical form restoring device for restoring said foldable finger cuff to a cylindrical form when said cover is opened.

11. A finger-type blood pressure monitor according to claim 10, wherein said cylindrical form restoring device is configured to draw said foldable finger cuff toward opposite side of a fixed portion of said cover.

12. A finger-type blood pressure monitor according to claim 10, wherein said cylindrical form restoring device comprises a spring plate interposed between said cuff and a collar which is forced to open said cuff.

13. A finger-type blood pressure monitor according to claim 1, wherein said foldable finger cuff is oriented so that a user can insert a finger into said cuff when said cuff is open.

14. A finger-type blood pressure monitor according to claim 1, further comprising a cover detector to detect said cover is open.

15. A finger-type blood pressure monitor according to claim 14, wherein said cover detector comprises a cam and a switch which is operated by said cam.

16. A finger-type blood pressure monitor according to claim 14, wherein said cover detector switches on a power supply when said cover detector detects said cover is open.

17. A finger-type blood pressure monitor according to claim 14, wherein said cover detector begins a pressurization of said foldable finger cuff only when said cover detector detects said cover is open.

18. A finger-type blood pressure monitor according to claim 14, further comprising a pressure switch to begin a pressurization of said foldable finger cuff, wherein said pressure switch will not function unless said cover detector detects said cover is open.

19. A finger-type blood pressure monitor according to claim 14, further comprising a pressure switch to begin a pressurization of said foldable finger cuff, wherein said pressure switch will function as a memory access switch when said cover detector detects said cover is closed.

20. A finger-type blood pressure monitor according to claim 1, wherein said main unit is divided into two sections of virtually the same size, in one of said two sections is provided said cover, said chamber for said finger cuff, and a display, and in another of said two sections is provided a mechanism to pressurize said finger cuff.

21. A finger-type cuff assembly for use in measuring blood pressure comprising:

a main unit;

a cover attached to said main unit in a way such that said cover can open and close;

a foldable finger cuff of which a portion is fixed to an inside of said cover, said foldable finder cuff being configured to open when said cover is opened; and

a pulse sensor in said finger cuff including means for automatically pressurizing said finger cuff when said pulse sensor detects that a finger has been inserted in said finger cuff

22. A finger-type blood pressure monitor, comprising:

a main unit;

a finger cuff; and

a pulse sensor in said finger cuff,

wherein said pulse sensor comprises a photoelectric sensor mounted on an S-shaped flexible printed circuit board which is attached to said finger cuff.

23. A finger-type blood pressure monitor, comprising:

a main unit;

a cover attached to said main unit in a way such that said cover can open and close;

a foldable finger cuff of which a portion is fixed to an inside of said cover, said foldable finger cuff being configured to open when said cover is opened;

; and

a pulse sensor in said foldable finger cuff,

wherein said pulse sensor is a photoelectric sensor, and an infrared transmission factor of a portion of said foldable finger cuff facing said pulse sensor is higher than that of an other portion of said foldable finger cuff.

24. A finger-type blood pressure monitor according to claim 23, wherein said finger cuff is made of material having low infrared transparency and said finger cuff has slits in a portion facing said pulse sensor.