Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3467077 A
Publication typeGrant
Publication dateSep 16, 1969
Filing dateJun 30, 1966
Priority dateJun 30, 1966
Publication numberUS 3467077 A, US 3467077A, US-A-3467077, US3467077 A, US3467077A
InventorsLeah Cohen
Original AssigneeDupaco Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sphygmomanometric cuff
US 3467077 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

Sept. 16, 1969 L. COHEN SPHYGMOMANOMETRIC CUFF Filed June 350,, 1966 INVENTOR. [541/ fox/5v United States Patent US. Cl. 1282.05 8 Claims ABSTRACT OF THE DISCLOSURE A sphygmomanometn'c cuff in which an elongate flexible cuff body is curved transversely of its length to be useful in obtaining accurate blood pressure measurements when the cuff body is wrapped around a tapering thigh or forearm of an obese person, for example.

This invention relates to a sphygmomanometric cuff which, in its opened condition, is arcuately curved so that, when applied to a tapering appendage of a human and the like, it exerts uniform pressure against the appendage across its width and does not work loose on the appendage.

Existing sphygmomanometric cuffs, i.e., strips of fabric used to apply an inflatable bladder to an arm or to a leg for the measurement of blood pressure, are basically and essentially straight lengths of fabric sufliciently long that they may be wrapped at least once about the desired appendage. For general use, as in taking a single blood pressure reading on a given patient, existing cuffs are readily useful and are satisfactorily constructed for such use. Existing cuffs, however, are not wholly satisfactory for use during operations, as where the cuff is in use for an extended period by an anaesthesiologist, for example.

In the use of a sphygmomanometric cuff, it is desirable that the cuff be so positioned on an arm or a leg that the cuff, across its width, exerts substantially uniform pressure on the appendage when the inflatable bladder carried by the cuff is inflated. When the pressure applied by the cuff is uniform across the area covered by the applied cuff, the systolic and diastolic blood pressure measure ments obtained are more accurate than when the cuff tends to pinch the appendage at one edge of the cuff. Also, when a series of blood pressure measurements must be obtained on a particular patient, as during a surgical operation or in an intensive care ward, it is desirable that all measurements be made under essentially identical conditions. The arms, particularly the upper arms, and the thighs of most humans have a tapering rather than a cylindrical shape. As a result, when an existing straight cuff is applied to these human appendages, the cuffs (when inflated) exert greater pressure on the appendage along one edge thereof than along the other edge of the cuff. As a result, the blood pressure measurements obtained by the use of existing cuffs are not always accurate. More importantly, the non-uniform pressure conditions associated with existing cuffs cause the cuff to Work downwardly along the tapering appendage as the bladder in the cuff is repeatedly inflated and deflated, as is the case during surgical operations and the like. For this reason, blood pressure measurements obtained with existing cuffs during operations are very likely to be obtained under different conditions because of movement of the cuff along the patients arm or leg. Movement of an existing cuff along an arm or leg may be impeded by taping the cuff to the leg, but the use of tape to hold a cuff in place often introduces additional non-uniform pressure conditions into the operation of the cuff.

This invention provides an improved sphygmomanometric cuff which, when inflated, exerts uniform pressure upon a tapering appendage to which the cuff is applied.

Patented Sept. 16, 1969 The blood pressure measurements obtained by the use of the cuff are accurately indicative of actual blood pressure conditions. Also, the cuff does not tend to move along the appendage as the cuff bladder is repeatedly inflated and deflated.

Generally speaking, the invention resides in an improved configuration for a sphygmomanometric cuff. The cuff has an elongate, flexible body which has a length sufficient to be wrapped at least once around a desired appendage. The body either includes an inflatable bladder adjacent one end thereof or is provided with means for securing an inflatable bladder to the body adjacent one end of the body. The body, for along at least a major portion of its length, is arcuately curved to a selected radius of curvature. As a result, when the body is placed against a tapering human appendage or the like so that the concave edge of the body opens toward the narrow end of the appendage, when the body is wrapped around the appendage and secured to itself, and when the wrapped body is tensioned on the appendage, the body exerts substantially uniform pressure upon the area of the appendage covered by the body. The cuff also includes connector means carried by the body for securing the end of the body opposite from the bladder to an intermediate portion of the body in overlying relation of the end of the body to the intermediate portion when the body is wrapped around the appendage.

The abovementioned and other features of the invention are more fully set forth in the following detailed explanation of the invention, which explanation is presented with reference to the accompanying drawing, wherein:

FIG. 1 is a plan view of a sphygmomanometric cuff according to this invention; and

FIG. 2 is an elevation view of the cuff in place on a human thigh, for example.

A sphygmomanometric cuff 10, shown in plan view in FIG. 1, includes a body 11 which has an elongate, arcuately curved planiform configuration when laid out flat on a table or the like. The body is basically inelastic and has substantial width transversely of its elongate extent. Preferably the body is made from two plies of woven nylon fabric or the like, the plies being stitched together, as at 12, along the periphery of the body. If desired, however, the body may be made from two plies of a flexible plastic such as a vinyl-base plastic film, secured together by fusing along their peripheries. The body has sufficient length between opposite ends 13 and 14 that it can be wrapped around a human appendage, such as thigh 15 shown in FIG. 2, at least once. The body has a convex edge 16 which is longer than opposite concave edge 17.

Stitching 12 is discontinuous, as at 19, for a selected distance along edge 17 adjacent to but spaced from end 13 of the body. A line of stitches 20 extends across the body at the end of area 19 toward end 14 of the body to secure the plies of the body together. Between stitch ing 20 and end 13, the body defines an internal pocket 21 open at 19 and sized to receive an inflatable sphygmomanometric bladder 22. The bladder preferably is made of an elastomeric material and may be inserted into the pocket through opening 19. The bladder includes two tubes 23 and 24 which extend from it to the exterior of the body through the opening of the pocket. The tubes carry suitable fittings 25, such as male Luer fittings, by which the tubes may be connected to a bulb 26 for inflating the bladder and to a suitable pressure gage, such as a mercury manometer 27, by which the air pressure in the bladder may be measured.

In the event that body 11 is made from two plies of air impervious plastic film, the bladder may be defined by forming a chamber between the plies adjacent one end of the body; the chamber would be equipped with suitable fittings for tubes 23 and 24.

Preferably, the bladder has sufficient length along the body that it extends around a substantial portion of the circumference of a human appendage or the like to which the cuff is applied as described below. Also, the body may be straight along the portion of its length which carries the inflatable bladder, but such a construction of a cuff in accord with this invention is not presently preferred; instead, it is preferred the bladder be shaped to match the shape of the body, the body being arcurately curved along its entire length, as illustrated.

The body of cuff 10 carries rnulti-directionally and multipositionally effective fastening or connector means for securing body end 14 relative to an intermediate portion 30 of the body. In the presently preferred cuff shown in the drawing, the fastening means is a Velcro fastener including two spaced strips of Velcro pile material 31 secured to one face 32 of the body transversely of the width of the body adjacent end 14. The fastening means also includes two arcurately curved strips of Velcro hook material 33 (the hook material being composed of a multitude of small barbs secured to a fabric backing) secured to the opposite face of the body along intermediate portion 30 adjacent to and parallel to body edges 16 and 17. Such a fastener, i.e., the pile and hook materials, is manufactured by American Velcro Company, Manchester, NH. It should be understood, however, that any other suitable fastening means may be used in a cuff according to this invention without departing from the scope of the invention. A Velcro fastener is preferred, however, since it is infinitely adjustable and may be reused almost an infinite number of times.

Cuff 10 is used in a manner similar to the way in which a conventional sphygmomanometric cuff is used, but to greated advantage, particularly upon a tapered human appendage such as an arm or thigh 15. The opened cuff is applied to the thigh, for example, at the desired location with convex edge 16 of the cuff disposed toward the thicker part of the thigh. The portion of body face 32 adjacent bladder 22 is placed against the thigh; the body is then wrapped around the thigh and secured on the thigh by use of the fastening means. The arcuate configuration of the body causes the applied cuff to conform closely to the contour of the tapered thigh. Ideally the cuff should be applied to the thigh so that the same degree of looseness between the thigh and the cuff exists along edge 16 as along edge 17. As a result, the pressure exerted by the cuff upon the thigh is substantially uniform over the entire area covered by the cuff when the bladder is inflated; if a conventional cuff were used, the cuff would be tighter toward the thicker part of the thigh adjacent the hip than toward the narrow portion of the thigh adjacent the knee. Because the pressure applied to the thigh by the cuff is uniform, the cuff does not tend to work itself downwardly along the thigh as the bladder is repeatedly inflated and deflated.

Preferably the curvature of body 11 is the same as the curvature which would exist in a development of a truncated cone having a taper equal to the taper of an average thigh. Even if the thigh to which cuff 10 is applied in any given case has a taper differing from the taper of an average thigh, the cuff conforms to the shape of the thigh to a markedly greater extent than would a conventional cuff. The use of multi-directionally and multi-positionally effective fastener means in cuff 10 further increases the ability of the cuff to conform to the contours of thighs of widely varying size and shape.

The use of cuff 10 has been described above with reference to a human thigh. It will also be understood that the cuff can be used to great advantage on the upper arm of a human; the utility of the cuff is particularly apparent when the cuff is used on the upper arm of an obese person-the upper arms of obese persons have a pronounced taper. Also, the cuff can be used to great advantage in medical research work upon animals such as upon dogs which have essentially triangular thigh shapes.

By way of example only, a presently preferred form of the invention is a thigh cuff having a straight-line distance of 42 inches between the opposite ends of cuff edge 17 and a cuff body width of 7% inches; the curvature of this cuff is 8 inches measured from the midpoint of edge 17 to a line between the opposite ends of this edge of the body.

Body 11 includes a quantity of Velcro pile material 40 secured to face 32 centrally of pocket 21 to adapt the cuff for use with a blood pressure cuff transducer manufactured and sold by Dupaco Incorporated, Arcadia, Calif, in connection with the trademark Daisyst.

Modifications to the structure described above within the scope of the invention will be apparent to workers in the art to which the invention pertains. Thus, the foregoing description, which has been presented for the purposes of example and illustration, should not be considered as limiting the scope of the invention.

What is claimed is:

1. In a sphygmomanometric cuff for use on a tapered appendage of a living being and including an elongate body fabricated principally of flexible material, means adjacent one end of the body for mounting an inflatable bladder to the body, and connector means carried by the body at the other end thereof and intermediate the length of the body for securing the other end of the body to said intermediate portion when the body is wrapped around an appendage so as to place said other end in overlapping relation to said intermediate portion, the improvement comprising, with respect to the planform configuration of the body, the body being curved transversely of its elongate extent along at least a major portion of its length from the other end thereof in accord with a selected radius of curvature to define opposite concave and convex longitudinal edges of the body.

2. A sphygmomanometric cuff according to claim 1 wherein said selected radius of curvature has a value corresponding to the taper of a selected appendage.

3. A sphygmomanometric cuff according to claim 2 wherein the body is arcuately curved along its entire length.

4. A sphygmomanometric cuff according to claim 2 including an inflatable bladder carried 'by the body by said mounting means.

5. A sphygmomanometric cuff according to claim 4 wherein the means for mounting the bladder comprises a pocket defined internally of the cuff adjacent said one end of the body and elongated in the direction of the elongate extent of the body.

6. A sphygmomanometric cuff according to claim 2 wherein said connector means are multi-positionally effective.

7. A sphygmomanometric cuff according to claim 6 wherein the connector means includes a quantity of pile material disposed transversely of the body adjacent the other end thereof on one side of the body, and a quantity of hook material disposed along the intermediate portion of the body on the other side of the body, the hook material comprising a multitude of small hooks secured to a fabric backing.

8. A sphygmomanometric cuff according to claim 2 wherein the bladder mounting means comprises a pocket defined within the body adjacent the one end of the body and elongated in the direction of the elongate extent of the body, the pocket having an opening to the concave longitudinal edge of the body, an inflatable bladder disposed in the pocket and including tube means extending therefrom through the opening, and wherein the connector means includes a quantity of pile material disposed transversely of one side of the body adjacent the other end of the body and a quantity of hook material disposed along the other side of the body along the intermediate portion, the hook material comprising a multitude of small hooks secured to a backing sheet.

References Cited UNITED STATES PATENTS Cossor 12 8327 Hanafin 128-327 Heitz 128-2.05 Speelman 128--2.05 Berman 128-2.05

Mestral 28--78 FOREIGN PATENTS 4/1961 France. 8/1958 Germany.

RICHARD A. GAUDET, Primary Examiner.

KYLE L. HOWELL, Assistant Examiner.

US. Cl. X.R.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2029912 *May 22, 1934Feb 4, 1936Frank CossorSphygmomanometer bandage
US2481924 *Apr 24, 1948Sep 13, 1949W A Baum Co IncSphygmomanometer cuff
US2582123 *Jun 23, 1950Jan 8, 1952Heitz Instr IncAdjustable length sphygmomanometer cuff or sleeve
US2896610 *Dec 19, 1956Jul 28, 1959Propper Mfg Company IncSphygmomanometer cuffs
US2981251 *Mar 11, 1957Apr 25, 1961Medical Plastics IncInflatable blood pressure cuff
US3009235 *May 9, 1958Nov 21, 1961Internat Velcro CompanySeparable fastening device
US3194234 *Dec 18, 1963Jul 13, 1965Duckman SimonPostoperative binder
US3279459 *Dec 14, 1964Oct 18, 1966Abraham W SchenkerLimb encircling device
DE970185C *Mar 16, 1951Aug 28, 1958Dr Med Heinz WindusGeraet zur oszillatorischen Blutdruckmessung, Pulsueberwachung und zur oszillographischen Aufzeichnung peripherer Durchblutungsstoerungen
FR1262921A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3654931 *Feb 11, 1970Apr 11, 1972Kidde & Co WalterDisposable tourniquet cover
US3773036 *Dec 2, 1971Nov 20, 1973Minnesota Mining & MfgDisposable blood pressure cuff
US4090514 *Oct 22, 1976May 23, 1978Howard Helmut HinckPressure infusion device
US4635635 *Nov 29, 1984Jan 13, 1987Aspen Laboratories, Inc.Tourniquet cuff
US4672722 *Apr 28, 1986Jun 16, 1987Jmw TextilesSingle tape closure construction
US4726382 *Sep 17, 1986Feb 23, 1988The Boc Group, Inc.Inflatable finger cuff
US4838276 *Dec 2, 1987Jun 13, 1989Nippon Colin Co., Ltd.Blood pressure cuff
US4979953 *Feb 16, 1990Dec 25, 1990Instrumed, Inc.Medical disposable inflatable tourniquet cuff
US5193549 *Jul 11, 1990Mar 16, 1993Biomedical Dynamics CorporationInflatable cuff
US5201758 *Jan 7, 1992Apr 13, 1993Boehringer Mannheim CorporationFor reducing blood flow in a patient's limb
US5243991 *Nov 6, 1991Sep 14, 1993Marks Lloyd AAdjustable blood pressure cuff and method of measuring blood pressure
US5251646 *Jun 29, 1992Oct 12, 1993Thomas BowenProtective covering for a sphygmomanometer cuff
US5304202 *Mar 18, 1993Apr 19, 1994Stahl Daniel AMethod and apparatus for enabling intravenous therapy when cardiac output is less than usually necessary
US5312431 *Sep 30, 1991May 17, 1994Abatis Medical Technologies LimitedOcclusive cuff
US5454831 *Feb 9, 1994Oct 3, 1995Abatis Medical Technologies Ltd.Occlusive cuff system
US5513643 *Apr 26, 1994May 7, 1996Suite; Jean M.Disposable protection wrap for use with a sphygmomanometer
US5649954 *Oct 2, 1995Jul 22, 1997Mcewen; James A.For facilitating surgery by occluding flow in blood vessels
US5733304 *Aug 21, 1996Mar 31, 1998Instrumed, Inc.Disposable inflatable tourniquet cuff
US5746213 *Feb 24, 1995May 5, 1998Marks; Lloyd A.Adjustable blood pressure cuff and method of using same
US7427268 *Jul 26, 2004Sep 23, 2008Pharma-Smart, LlcRing-shaped cuff for measurement of blood pressure
US7758607 *Mar 20, 2006Jul 20, 2010Mcewen James ALow-cost contour cuff for surgical tourniquet systems
US7862499 *Oct 28, 2004Jan 4, 2011Sunshine Heart Company Pty LtdBlood vessel wrap
US7887478Oct 28, 2004Feb 15, 2011Sunshine Heart Company Pty LtdPercutaneous gas-line
US7955248Oct 28, 2004Jun 7, 2011Sunshine Heart Company Pty LtdActuator for a heart assist device
US8002691Oct 11, 2007Aug 23, 2011Sunshine Heart Company Pty Ltd.Fluid pressure generating means
US8016739Feb 21, 2008Sep 13, 2011Sunshine Heart Company Pty LtdHeart assist devices, systems and methods
US8190236 *Jan 13, 2006May 29, 2012Prince Martin RTourniquet for magnetic resonance angiography, and method of using same
US8206278Aug 20, 2007Jun 26, 2012Sunshine Heart Pty Ltd.Wrap for a heart assist device
US8425397Dec 7, 2010Apr 23, 2013Sunshine Heart Company Pty LtdPercutaneous gas-line
US8469873Dec 7, 2010Jun 25, 2013Sunshine Heart Company Pty LtdBlood vessel wrap
US8571658Jun 21, 2010Oct 29, 2013Sunshine Heart Company Pty LtdSynchronization control system
US8591394Aug 25, 2011Nov 26, 2013Sunshine Heart Company Pty Ltd.Heart assist devices, systems and methods
US8702583May 19, 2011Apr 22, 2014Sunshine Heart Company Pty, Ltd.Actuator for a heart assist device
US20130030284 *May 29, 2012Jan 31, 2013Prince Martin RTourniquet for magnetic resonance angiography, and method of using same
CN100586380CJan 24, 2006Feb 3, 2010马丁R普林斯Tourniquet for magnetic resonance angiograpy
EP1848343A2 *Jan 24, 2006Oct 31, 2007Martin R. PrinceTourniquet for magnetic resonance angiograpy, and method of using same
EP2151196A1 *Jan 24, 2006Feb 10, 2010Martin R. PrinceTourniquet for magnetic resonance angiography
Classifications
U.S. Classification600/499, 128/DIG.150, 606/202
International ClassificationA61B17/135, A61B5/022
Cooperative ClassificationY10S128/15, A61B17/135, A61B5/02233
European ClassificationA61B17/135, A61B5/022D
Legal Events
DateCodeEventDescription
Jan 30, 1990ASAssignment
Owner name: BAXTER INTERNATIONAL INC.
Free format text: CHANGE OF NAME;ASSIGNOR:BAXTER TRAVENOL LABORATORIES, INC., A CORP. OF DE;REEL/FRAME:005050/0870
Effective date: 19880518
Mar 2, 1987ASAssignment
Owner name: BAXTER TRAVENOL LABORATORIES, INC. A CORP. OF DE
Free format text: MERGER;ASSIGNOR:AMERICAN HOSPITAL SUPPLY CORPORATION INTO;REEL/FRAME:004760/0345
Effective date: 19870126