Automatic cuff mechanism for blood pressure measuring system
First Claim
1. An automatic cuff mechanism for use with a blood pressure measuring system, comprising, in combination:
- a. an enclosing member defining an opening for receiving a portion of a person'"'"'s body in which blood circulation is to be temporarily cut off;
b. mechanical contracting means including a flexible band having one end secured to an inner wall portion of said opening in said enclosing member, said band passing circumferentially about the interior of said opening; and
pulling means secured to said band and passing tangentially therefrom out said enclosing member such that a pulling force on said pulling means circumferentially contracts said band in a manner of a tightening spiral to close about said portion;
c. means responsive to a given resistance force exerted by said portion resisting further contraction of said contracting means to terminate operation thereof so that said contracting means engages about said portion in a snug manner; and
d. a flexible fluid chamber lying along a portion of the interior surface of said band, in a position between said flexible band and said portion of a person'"'"'s body such that further pressure can be exerted on said portion by filling said flexible fluid chamber with fluid.
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Accused Products
Abstract
An automatic cuff for use with blood pressure measuring apparatus includes a cylindrical member within which a person may position his arm. A flexible band is positioned circumferentially about the inner wall of the cylinder and connected to a cable extending from the cylinder such that pulling on the cable circumferentially contracts the band in the manner of a tightening spiral. The band supports an air chamber on its inner wall and after a person'"'"'s arm is snugly engaged by the band, further contraction is stopped and fluid is pumped in the fluid chamber to provide additional force in closing off circulation. After the air pressure is gradually decreased, release of the person'"'"'s arm is accomplished by releasing the pulling force on the cable so that the flexible band circumferentially expands under its own natural bias.
91 Citations
5 Claims
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1. An automatic cuff mechanism for use with a blood pressure measuring system, comprising, in combination:
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a. an enclosing member defining an opening for receiving a portion of a person'"'"'s body in which blood circulation is to be temporarily cut off; b. mechanical contracting means including a flexible band having one end secured to an inner wall portion of said opening in said enclosing member, said band passing circumferentially about the interior of said opening; and
pulling means secured to said band and passing tangentially therefrom out said enclosing member such that a pulling force on said pulling means circumferentially contracts said band in a manner of a tightening spiral to close about said portion;c. means responsive to a given resistance force exerted by said portion resisting further contraction of said contracting means to terminate operation thereof so that said contracting means engages about said portion in a snug manner; and d. a flexible fluid chamber lying along a portion of the interior surface of said band, in a position between said flexible band and said portion of a person'"'"'s body such that further pressure can be exerted on said portion by filling said flexible fluid chamber with fluid. - View Dependent Claims (2, 3, 4, 5)
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Specification