US3786802A - Leg unit inserts - Google Patents
Leg unit inserts Download PDFInfo
- Publication number
- US3786802A US3786802A US00299712A US3786802DA US3786802A US 3786802 A US3786802 A US 3786802A US 00299712 A US00299712 A US 00299712A US 3786802D A US3786802D A US 3786802DA US 3786802 A US3786802 A US 3786802A
- Authority
- US
- United States
- Prior art keywords
- inserts
- patient
- housing
- blanket
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H9/00—Pneumatic or hydraulic massage
- A61H9/005—Pneumatic massage
- A61H9/0078—Pneumatic massage with intermittent or alternately inflated bladders or cuffs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2230/00—Measuring physical parameters of the user
- A61H2230/04—Heartbeat characteristics, e.g. E.G.C., blood pressure modulation
Definitions
- ABSTRACT In an external pressure circulatory assist apparatus of the kind wherein hydraulic pressure is cycled against a patients legs-usually in synchronization with the patients heartbeat, means to improve the performance of the apparatus on smaller patients by providing rigid leg inserts adapted to fit between the upper portion of a supine patients legs and a rigid shell for enclosing both the inserts and a hydraulic blanket.
- the inserts provide means to improve pressure cycle control on a patients legs.
- This invention relates to improved external pressure circulatory assist apparatus of the kind wherein hydraulic pressure is cycled against a patients legs, usually in synchronization with the patients heartbeat cycle.
- This apparatus comprises rigid, generally leg-conforming inserts of generally truncated conical shape and positioned between the liquid bladder in direct contact with the inner wall of the rigid housing of the leg unit.
- inserts must be formed of substantially non-deformable material; they may not be formed of deformable cushioning materials.
- Such inserts are advantageously fastened to the restraining housing of the leg unit to prevent movement during use. This coupling can be achieved by use of mechanical fasteners of the conventional type, by providing a high-friction contact surface between the inserts and the housing or by any other means found suitable in a given situation.
- Fiberglass-reinforced polyester resin is one material suitable for construction of the leg insert members. Such a material is sufficiently rigid so that it can be used with a hollow or foamor honeycomb-supported core to reduce the overall weight of the inserts and the unit.
- FIG. 1 is an exploded view of a leg unit useful in external pressure circulatory assist apparatus. The unit is shown with the control and mechanical-actuating mod ules removed.
- FIG. 2 is an end view of an insert constructed for use in the invention, said view being taken from the ankle and of the insert.
- FIG. 3 is a perspective view of the insert of FIG. 2.
- FIG. 4 is a section of the apparatus shown in FlG. 1 showing the relationship of a liquid-containing, pressure-transmitting bladder, the rigid casing and the inserts of the invention.
- a leg unit 10 adapted for use in external pressure circulatory assist treatment comprises an upper housing 12 and a lower housing 14.
- the upper and lower housings are connected one to the other by slide fasteners consisting of male members 16 mounted on housing 14 and female members 18 on housing 12.
- Three quick-connecting bolts 19 are utilized to connect the triangular lower housing reinforcing frame 20 to the upper housing reinforcing frame 22.
- This frame combined with the hoopstress-resistant configuration of the leg unit provides excellent resistance to pressure-caused distortion of unit 10 by pressure created therein during treatment of a patient.
- the weight of unit 10 is minimized by providing a gloss-reinforced polyester shell reinforced in the triangular bracing area 24 by a honeycomb construction 26.
- FIG. 4 shows a section of the entire blanket and also shows a mechanical actuator, i.e. a platen 30 mounted for reciprocating contact with blanket 28 and thereby providing a pressure pulse to the blanket and hence to the legs enclosed therein.
- Leg inserts 32 are fitted between blanket 28 and upper housing 12 as shown in FIGS. 1 and 4.
- the curvature of the insert 32 as, for example at 33 should merge smoothly with the inner wall of leg housing unit.
- the inserts usually have an arc in cross section of from 100 to 180 l or so is the preferred are. They are fastened, as seen in FIG. I, by a snap-type fastener 40 positioned on a strap which is united to the insert at 42.
- the new leg units can be considered to be solid extensions of the fluid-containing bag itself. In place they function as they would were they permanently attached thereto and, of course, such an integrated structure would be one embodiment of the invention since it would function well in avoiding the socalled end effects, and distributing the hoop stresses as does the combination of a separate inserts and liquid bag.
- the apparatus is more versatile if the inserts are removable.
- external pressure circulatory assist apparatus comprising a rigid housing adapted for holding limbs of a patient and a liquid-filled blanket adapted for transmitting pressure to said limbs from a mechanical pressure-causing device, the improvement comprising a pair of rigid non-compressible inserts of generally truncated semi-conical shape adapted to be placed over each of said patient's limbs, said inserts between said blanket and said rigid housing, said inserts forming means adapted to substantially decrease the annular distance between the patients limbs and the inner walls of said housing.
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Percussion Or Vibration Massage (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
Description
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29971272A | 1972-10-24 | 1972-10-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3786802A true US3786802A (en) | 1974-01-22 |
Family
ID=23155956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00299712A Expired - Lifetime US3786802A (en) | 1972-10-24 | 1972-10-24 | Leg unit inserts |
Country Status (1)
Country | Link |
---|---|
US (1) | US3786802A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4269175A (en) * | 1977-06-06 | 1981-05-26 | Dillon Richard S | Promoting circulation of blood |
WO1992019206A1 (en) * | 1989-10-12 | 1992-11-12 | Horace Bullard | Apparatus and method for movement of blood |
EP0569308A1 (en) * | 1992-05-07 | 1993-11-10 | Vasomedical, Inc. | A high efficiency external counter pulsation apparatus and method for controlling same |
US20020107461A1 (en) * | 2000-11-10 | 2002-08-08 | Hui John C.K. | High efficiency external counterpulsation apparatus and method for controlling same |
US6620116B2 (en) | 2000-12-08 | 2003-09-16 | Michael P. Lewis | External counterpulsation unit |
US20030233118A1 (en) * | 2002-06-13 | 2003-12-18 | Hui John C. K. | Method for treating congestive heart failure using external counterpulsation |
JP2004261592A (en) * | 2003-02-12 | 2004-09-24 | Nishimura Kikai Kk | External counter pulsation apparatus |
US20050070755A1 (en) * | 1993-05-06 | 2005-03-31 | Zhensheng Zheng | High efficiency external counterpulsation method |
US20060058716A1 (en) * | 2004-09-14 | 2006-03-16 | Hui John C K | Unitary external counterpulsation device |
US7048702B2 (en) | 2002-06-13 | 2006-05-23 | Vasomedical, Inc. | External counterpulsation and method for minimizing end diastolic pressure |
US20070272250A1 (en) * | 2006-05-24 | 2007-11-29 | Michael Paul Lewis | External pulsation treatment apparatus |
US20080319248A1 (en) * | 2007-06-20 | 2008-12-25 | Michael Paul Lewis | Hydraulically Actuated External Pulsation Treatment Apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3303841A (en) * | 1964-06-18 | 1967-02-14 | Dennis Clarence | Process and apparatus for pressurizing lower extremities of a patient during ventricular diastole |
US3403673A (en) * | 1965-07-14 | 1968-10-01 | Welton Whann R | Means and method for stimulating arterial and venous blood flow |
US3654919A (en) * | 1970-11-25 | 1972-04-11 | Medical Innovations Inc | Process and apparatus for synchronous assisting of blood circulation |
-
1972
- 1972-10-24 US US00299712A patent/US3786802A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3303841A (en) * | 1964-06-18 | 1967-02-14 | Dennis Clarence | Process and apparatus for pressurizing lower extremities of a patient during ventricular diastole |
US3403673A (en) * | 1965-07-14 | 1968-10-01 | Welton Whann R | Means and method for stimulating arterial and venous blood flow |
US3654919A (en) * | 1970-11-25 | 1972-04-11 | Medical Innovations Inc | Process and apparatus for synchronous assisting of blood circulation |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4269175A (en) * | 1977-06-06 | 1981-05-26 | Dillon Richard S | Promoting circulation of blood |
WO1992019206A1 (en) * | 1989-10-12 | 1992-11-12 | Horace Bullard | Apparatus and method for movement of blood |
US6572621B1 (en) | 1992-05-07 | 2003-06-03 | Vasomedical, Inc. | High efficiency external counterpulsation apparatus and method for controlling same |
EP0569308A1 (en) * | 1992-05-07 | 1993-11-10 | Vasomedical, Inc. | A high efficiency external counter pulsation apparatus and method for controlling same |
US5554103A (en) * | 1992-05-07 | 1996-09-10 | Vasomedical, Inc. | High efficiency external counterpulsation apparatus and method for controlling same |
US20050070755A1 (en) * | 1993-05-06 | 2005-03-31 | Zhensheng Zheng | High efficiency external counterpulsation method |
US7314478B2 (en) | 2000-11-10 | 2008-01-01 | Vasomedical, Inc. | High efficiency external counterpulsation apparatus and method for controlling same |
US6589267B1 (en) | 2000-11-10 | 2003-07-08 | Vasomedical, Inc. | High efficiency external counterpulsation apparatus and method for controlling same |
US20020107461A1 (en) * | 2000-11-10 | 2002-08-08 | Hui John C.K. | High efficiency external counterpulsation apparatus and method for controlling same |
US6962599B2 (en) | 2000-11-10 | 2005-11-08 | Vasomedical, Inc. | High efficiency external counterpulsation apparatus and method for controlling same |
US20050131456A1 (en) * | 2000-11-10 | 2005-06-16 | Hui John C.K. | High efficiency external counterpulsation apparatus and method for controlling same |
US6620116B2 (en) | 2000-12-08 | 2003-09-16 | Michael P. Lewis | External counterpulsation unit |
US7048702B2 (en) | 2002-06-13 | 2006-05-23 | Vasomedical, Inc. | External counterpulsation and method for minimizing end diastolic pressure |
US20030233118A1 (en) * | 2002-06-13 | 2003-12-18 | Hui John C. K. | Method for treating congestive heart failure using external counterpulsation |
JP2004261592A (en) * | 2003-02-12 | 2004-09-24 | Nishimura Kikai Kk | External counter pulsation apparatus |
US20060058717A1 (en) * | 2004-09-14 | 2006-03-16 | Hui John C K | External counterpulsation device having a curvilinear bed |
US20060058715A1 (en) * | 2004-09-14 | 2006-03-16 | Hui John C | External counterpulsation device with multiple processors |
US20060058716A1 (en) * | 2004-09-14 | 2006-03-16 | Hui John C K | Unitary external counterpulsation device |
US20070272250A1 (en) * | 2006-05-24 | 2007-11-29 | Michael Paul Lewis | External pulsation treatment apparatus |
US7981066B2 (en) | 2006-05-24 | 2011-07-19 | Michael Paul Lewis | External pulsation treatment apparatus |
US20080319248A1 (en) * | 2007-06-20 | 2008-12-25 | Michael Paul Lewis | Hydraulically Actuated External Pulsation Treatment Apparatus |
US8114037B2 (en) | 2007-06-20 | 2012-02-14 | Michael Paul Lewis | Hydraulically actuated external pulsation treatment apparatus |
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Owner name: INTERMEDICS CARDIASSIST, INC., 240 TARPON INN VILL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CARDIASSIST CORPORATION;REEL/FRAME:004015/0042 Effective date: 19820528 |
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Owner name: BRAZOSPORT BANK OF TEXAS Free format text: SECURITY INTEREST;ASSIGNORS:INTERMEDICS, INC.;INTERMEDICS CARDIASSIST, INC.;INTERMEDICS INTRAOCULAR, INC.;AND OTHERS;REEL/FRAME:004303/0077 Effective date: 19840726 Owner name: FIRST FREEPORT NATIONAL BANK Free format text: SECURITY INTEREST;ASSIGNORS:INTERMEDICS, INC.;INTERMEDICS CARDIASSIST, INC.;INTERMEDICS INTRAOCULAR, INC.;AND OTHERS;REEL/FRAME:004303/0077 Effective date: 19840726 Owner name: TRUST COMPANY BANK Free format text: SECURITY INTEREST;ASSIGNORS:INTERMEDICS, INC.;INTERMEDICS CARDIASSIST, INC.;INTERMEDICS INTRAOCULAR, INC.;AND OTHERS;REEL/FRAME:004303/0077 Effective date: 19840726 Owner name: FIRST NATIONAL BANK OF CHICAGO, THE Free format text: SECURITY INTEREST;ASSIGNORS:INTERMEDICS, INC.;INTERMEDICS CARDIASSIST, INC.;INTERMEDICS INTRAOCULAR, INC.;AND OTHERS;REEL/FRAME:004303/0077 Effective date: 19840726 Owner name: CHASE MANHATTAN BANK, N.A., THE Free format text: SECURITY INTEREST;ASSIGNORS:INTERMEDICS, INC.;INTERMEDICS CARDIASSIST, INC.;INTERMEDICS INTRAOCULAR, INC.;AND OTHERS;REEL/FRAME:004303/0077 Effective date: 19840726 Owner name: BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIA Free format text: SECURITY INTEREST;ASSIGNORS:INTERMEDICS, INC.;INTERMEDICS CARDIASSIST, INC.;INTERMEDICS INTRAOCULAR, INC.;AND OTHERS;REEL/FRAME:004303/0077 Effective date: 19840726 Owner name: CITIBANK, N.A., AS AGENT Free format text: SECURITY INTEREST;ASSIGNORS:INTERMEDICS, INC.;INTERMEDICS CARDIASSIST, INC.;INTERMEDICS INTRAOCULAR, INC.;AND OTHERS;REEL/FRAME:004303/0077 Effective date: 19840726 |
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