Cuff of wrist-mount blood pressure monitor

• US 20020170359A1
• Filed: 05/01/2002
• Published: 11/21/2002
• Est. Priority Date: 05/07/2001
• Status: Active Grant

• Current Assignee: Omron Healthcare Company Limited (Omron Corporation)
• Original Assignee: Omron Healthcare Company Limited (Omron Corporation)
• Inventors: Yamakoshi, Ken-Ichi, Tanaka, Takahide, Kato, Hiroyuki, Sano, Yoshihiko, Oku, Shojiro
• Granted Patent: US 6,694,821 B2
• Time in Patent Office: Days
• US Class Current: 73/756
• CPC Class Codes: A61B 5/02141 Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits A61B5/02233, A61B5/0235 take precedence
• CPC Class Codes: A61B 5/022 by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
• CPC Class Codes: A61B 5/02233 Occluders specially adapted therefor tourniquets A61B17/132
• CPC Class Codes: A61B 5/681 Wristwatch-type devices

Abstract

A cuff of a wrist-mount blood pressure monitor capable of oppressing an artery of the wrist securely without having effects of muscle, tendon or bone existing in the wrist area is presented. This cuff 10 of a wrist-mount blood pressure monitor comprises a first air bag 14A as a first inflatable portion, and a second air bag 16A as a second inflatable region disposed between the first inflatable portion 14A and the wrist, being made of a material of a higher stretchability than the material for the first air bag 14A.

Claims

1. A cuff of a blood pressure monitor configured to be mounted on a wrist of a subject, comprising:

an inflatable bag for pressurizing an artery of the wrist, the inflatable bag receiving a predetermined amount of a fluid to be inflated, the inflatable bag comprising a first inflatable portion and a second inflatable portion, the second inflatable portion being disposed between the first inflatable portion and the wrist, a material used to form the second inflatable portion having a lower elastic coefficient than a material used to form the first inflatable portion; and

a mounting device for mounting the inflatable bag on the wrist.

2. The cuff of a blood pressure monitor of claim 1, wherein the first inflatable portion expands substantially toward the wrist when the first inflatable portion is inflated with the fluid, and the second inflatable portion extends so that a portion of the second inflatable portion intrudes into a space between constituents of the wrist, the constituents being a tendon, a muscle or a bone of the wrist, when the second inflatable portion is inflated with the fluid.

3. The cuff of a blood pressure monitor of claim 1, wherein the material used to form the second inflatable portion is a silicone or a latex.

4. The cuff of a blood pressure monitor of claim 2, wherein the material used to form the second inflatable portion is a silicone or a latex.

5. The cuff of a blood pressure monitor of claims 1, 2, 3 or 4, wherein the second inflatable portion comprises a surface having an extruding portion and a dent portion, the surface of the second inflatable portion being configured to contact a surface of the wrist.

6. The cuff of a blood pressure monitor of claim 5, wherein the surface of the second inflatable portion further having a plurality of extruding portions and a plurality of dent portions, and the extruding portions and the dent portions are aligned at least in one direction of the surface.

7. The cuff of a blood pressure monitor of claim 1, wherein the fluid is air.

8. The cuff of a blood pressure monitor of claim 1, further comprising a conduit connected to the first inflatable portion and the second inflatable portion, the fluid being introduced to the first inflatable portion and the second inflatable portion through the conduit.