|Publication number||US3824992 A|
|Publication date||Jul 23, 1974|
|Filing date||Mar 16, 1973|
|Priority date||Mar 16, 1973|
|Publication number||US 3824992 A, US 3824992A, US-A-3824992, US3824992 A, US3824992A|
|Inventors||J Nicholson, C Lipson|
|Original Assignee||Clinical Technology Inc|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (75), Classifications (12)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent 1 Nicholson et al. v
-11 3,824,992 [451 July 23, 1974 PRESSURE GARMENT  Inventors: James E. Nicholson, Quincy; Charles S. Lipson, Newton, both of Mass.
 Assignee: Clinical Technology Incorporated, Brighton, Mass.
 Filed: Mar. 16, 1973  Appl. No.: 342,098
Primary Examiner-Lawrence W. Trapp Attorney, Agent, or Firm-Thomas N. Tarrant [57 ABSTRACT A garment to provide pulsating pressure to a lower human extremity for aiding blood circulation in the extremity and having an outer nonelastic plastic envelope sealed to an internal relatively soft envelope providing an air space therebetween for the application of pulsating pressure uniformly to a limb inserted within the inner envelope. The inner envelope has a common seam along part of its length with the outer envelope to prevent inflation pressure from displacing the two envelopes. A system of apertures in the inner envelope 5 R f renc s Cited provide for a limited gaseous passage of air from the UNITED STATES PATENTS pressurized space between the two envelopes to the 2 832 336 4/1958 Dav s et a 128mm 20 surface of a limb encased within to provide breathing 1 2,834,340 5/1958 Walter l28/DIG. 20 for the 3,083,708 4/1963 Gottfried 128/D1G. 20 6 Claims, 4 Drawing Figures 1 i PRESSURE GARMENT BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to pressure garments for aiding blood circulation and in particular to those for use on animal extremities to provide pulsating pressures urging venous blood from the limb and'thereby encourage introduction of arterial blood.
Description of the Prior Art In the mid s there was some recognition of the fact that thrombotic occlusion sometimes occurs as a result of poor blood circulation in the human extremities. See, for example, U.S. Pat. Nos. 2,134,646 and 2,142,689. However, there was no widespread acceptance of devices for improving the circulation. In the last few years, investigations have shown that an unexpectedly large percentage of post-operative deaths the lower extremities of a confined person is notoriously poor. It is now recognized fact that it is desirable to have a patient up and about as soon as possible after an operation in order to obtain the most favorable prognosis. But only relatively recent studies have demonstrated that the greatest benefit of this is probably due to the'reduction in thrombotic occulsion.
Early pressure garments tended to use a single pressurized envelope'with seals to the skin of the patient at the open end or ends. Since these seals were somewhat tricky in manufacture and usually cause a certain amount of irritation in use, more recent pressure garments have used double envelopes in which pressure between the two envelopes forced the inner envelope against the patients skin. US. Pat. No. 2,747,570 to Jobst and U.S. Pat. No. 3,391,692 to Spielberg describe pressure garments which are designed to provide greater pressure at the lower portion of the enclosed limb graduated to lesser pressure at the upper enclosed portion of the limb. It can be expected that such a pressure gradient would help to promote an ,undirectional flow of blood. It has been demonstrated, however, that even with blood veins in poor condition, such that the undirectional valves of the veins function inadequately, that light pulsating pressure over a large portion of a lower extremity will increase blood flow through the extremity. Accordingly, US. Pat. No. 3,083,708 to Gottfried discloses a pressure garment completely encasing the lower extremity up to the thigh for the application of light pulsating pressures without a gradient.
Most of these prior art devices have used lacings or zippers or some arrangement of air pockets resulting in complexity and increased cost. Another difficulty in prior art devices has been the use of inner envelope material uncomfortable to the skin or producing an air seal against the skin such as to prevent the skin from perspiring freely. Blocking the evaporation of skin vapors hinders the human system from controlling the skin temperature and generally causing discomfort.
SUMMARY OF THE INVENTION Now, in accordance with the present invention, a pressure garment for the animal extremities is provided which has an outer relatively stiff, nonelastic envelope supporting an inlet stem for the application of pulsating gaseous pressure. An inner soft plastic envelope has an open end sealed to the open end of the outer envelope and is further bonded along the longitudinal line to the outer envelope. The inner envelope further has a plurality of breathing pores to provide for the passage of applied gaseous media past the inner envelope and along the skin of the wearer to enable natural breathing of the skin.
Thus it is an object of the invention to provide a novel pressure garment for improving blood circulation in animal extremities.
It is a further object of the invention to provide a double envelope pressure garment carrying breathing pores in its inner envelope for the passage of air along the skin of the wearer.
It is a further object of the invention to provide a novel pressure garment for an animal extremity comprising an outer nonelastic plastic envelope and an inner soft plastic envelope sealed to said outer envelope so as to provide a pressurizable pocket therebetween. 4 i
It is a further object of the invention to provide a pressure garment for the lower limb consisting of inner and outer envelopes, each closed at one end and sealed together at their open end being further bonded together along their length from the open end extending towards the closed end.
Further objects and features of the invention will become apparent upon reading the following description together with the drawing.
BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a left side elevation of a garment according to the invention with a portion of the outer envelope cut away at the toe.
FIG. 2 is a right side elevation of the garment of FIG. 1.
FIG. 3 is a left side elevation with a portion of the outer envelope cut away of a second embodiment of the invention.
FIG. 4 is a side elevation of a third embodiment of the invention. DESCRIPTION OF THE PREFERRED I EMBODIMENTS A boot-like garment for providing pulsating pressures to the foot and lower leg is depicted in FIG. 1. The garment has outer envelope 10 made of clear semirigid 8 mil vinyl plastic. Envelope 10 is made of first sheet 11 and second sheet 12 (FIG. 2) acting as left and right sides thermally bonded together all around their perimeters except at open-end 14. Other materials may be used and may be sealed together by other methods. The material need not be transparent, but it must be impermeable to most fluids and resistant to stretching to permit an internal pressure equal to at least 40 mm of mercury at sea level.
Inner envelope 15 is made of soft elastic 4 mil matte vinyl. Envelope 15 is made of third sheet 16 and fourth sheet 17 acting as left and right sides thermally bonded together all around their perimeters except at open end 14. Again other materials may be used and may be sealed together by other methods. The material should be sufficiently soft and compliant to mold itself under pressure to a foot and lower leg without producing discomfort by way of nonuniformity in contact pressures. Materials that are insufficiently soft and compliant will frequently develop relatively stiff wrinkles and resultant nonuniformity in contact.
. I j 3 a At open end 14, sheets 11 and 16 are thermally sealed together and sheets 12 and 17 are thermally sealed together. This forms a completely enclosed space or pocket in between envelopes and 15.
Because the outer envelope is semirigid, there would i be a'loss of free movement of the enclosed limb if the inner and outer envelopes were secured together along their entire perimeters. However, on the application of pressure between the envelopes, inner envelopes is urged 'to extrude from outer envelope '10. This is avoided by bonding envelopes 10 and 15 together along part of a longitudinal seam. In the boot-like configuration of FIGS. 1 and 2 this is accomplished by thermal bonding of the rear seams of envelopes 10 and 15 together from open end 14 to heel portion 18. The remainder of foot portion 20 of envelope 15 remains free floating inside envelope l0.
Envelope 10 carries port2l for applying and withdrawing fluid or for applying elastic waves to a contained fluid. Port 21, as depicted, consists of a reinforcing element 22 and stem 24 of tubing supported by and sealingly connected to element 22. Element 22 and stem 24 may be made of metal, rubber'or'plastic with pores 25 near the closed end allows fluid passing therethrough to effect ventilation along the entire length of the garment. By having port'21 near pores 25, any significant pressure gradient due to fluid flow through pores 25 is avoided.
Pores 25 must have a total combined area less than the inside diameter of port 21. This is necessary so that fluid can be readily provided through port 21 at a rate faster than it exhauststhrough pores 25.
FIG. 3' depicts a boot-like garment similar to that of FIGS. 1 and 2 except that apertures 25am replaced by a separate source of ventilating gas. A soft flexible tube 26 from outside. of the garment, extends through the open end to foot portion 20. Tube 26 lies inside of inner envelope 15 and preferably is bonded to the envelope along its length so as to avoid interference with the insertion or withdrawal of a limb. Tube 26 has an open end 27 in the vicinity of foot portion 20 for releasing ventilating gas.
In order to provide a pressure gradient from the closed end toward the open end of the garment, apertures 28 in either inner envelope 15 or outer envelope 10 may be provided. Apertures 28 similar to apertures 25 should have a total combined arealess than that of port 21. With a continuous pressure maintained between envelopes 10 and 15, flow through apertures 28 will cause a pressure drop along the length of the garment resulting in a pressure gradient. This gradient can be controlled as desired by the size of envelope 10, the relationship between effective areas of port 21 and apertures 28 and the location of port 21 and apertures 28.
A garment useful over a fore limb is depicted in FIG. 4. Outer envelope 30 made similar to envelope 10 of FIG. 1 is generally rectangular in shape and carries 4 inner envelope 3l'much the same as envelope 15 of FIG. 1 except for shape. The outer envelope is bonded to thein'rier envelope at open end 32 and along seams 34 to wrist position 35. Port 36 is provided for connection to a source of fluid under pressure and series of apertures 37 near the closed end of envelope 31 are provided for ventilation. Means for providing an independent ventilation source or a pressure gradient such as described with relation to FIG. 3 are contemplated.
While the invention has been described with relation to a specific embodiment, various other configurations are contemplated. For example, the boot-like garment of FIGS. 1 through 3 can be made in various lengths covering less or up to the entire length of the limb. Similarly a garment such as in FIG. 4 for a fore limb may be made in various lengths and may have more conformance in shape than that shown. Thus it is intended to cover the invention within the full scope of the following claims.
1. In a garment for an-animal body extremity consisting of inner'and outer envelopes forming a pockettherebetween' for the periodic application of fluid pressure to stimulate flow of vascular fluids, the combination in said inner envelope comprising:
a. A soft compliant envelope material readily moldable to an animal body under light pressure;
b. Anopen-ended proximal portion to said inner envelope; I
c. A closed distal portion to said inner envelope;
.d. A fluid impermeable seam connecting the open end of said proximal portion to said outer envelope; I
e. A longitudinal seam along the length of said proximal portion connected to said outer envelope;,,and,
f. A complete separation between the distal portion of said inner envelope and said outer envelope whereby the distal portion of said inner envelope has freedom of movement within said outer envelope. I
2. In a garment according to claim 1 the combination in which said distal portion is perforated by a plurality of small'apertu'resfor allowing a gaseous flow between said inner envelope and along the surface of said animal body.
3. In a garment according to claim 1 the combination in which said distal portion is shaped to accomodate a foot.
4. In a garment according to claim 1, the combination with said inner envelope of a flexible tube extending from the exterior through said open ended proximal portion and extending into the proximity of said closed distal portion whereby to provide a flow -of ventilating gas between said first envelope and said limb.
5. A garment for enhancing blood circulation in an animal body comprising:
a. A first envelope of soft compliant synthetic resin open at one end and closed at the other for insertion of an animal limb;
b. A second envelope of semirigid synthetic resin exterior to said first envelope and sealed to said first envelope at said open end'to form a pocket therebetween;
c. Port means connected to said second envelope for introducing gas between said second envelope and said first envelope so as to compress said first envelope against said limb; and,
d. A plurality of pores in said first envelope in the proximity of the closed end for providing a ventilating flow of gas between said first envelope and said limb, the total area of said pores being less than the area of said port means.
6. A garment having an open end and a closed end for enhancing blood circulation in an animal body comprising:
a. A first envelope of soft compliant synthetic resin open at one end and closed at the other for insertion of an animal limb;
b. A second envelope of semirigid synthetic resin exterior to said first envelope and sealed to said first envelope at said open end to form a pocket therebetween;
c. Port means connected to said second envelope proximate to said closed end for introducing gas between said second envelope and said first envelope so as to compress said first envelope against said limb; and,
d. A plurality of apertures located in said garment proximate to said open end, whereby on the application of fluid pressure at said port means, fluid flow through said apertures provides a pressure gradient entending from a relatively high pressure at said closed to a relatively low pressure at said open end.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2832336 *||Jun 23, 1955||Apr 29, 1958||Davis||Physiotherapy device|
|US2834340 *||Mar 9, 1954||May 13, 1958||Carl W Walter||Inflatable traction device|
|US3083708 *||Aug 8, 1960||Apr 2, 1963||Jobst Institute||Sleeve or legging for stimulating flow of fluids within an animal body|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3920006 *||Jan 2, 1974||Nov 18, 1975||Roy Lapidus Inc||Inflatable device for healing of tissue|
|US4206751 *||Mar 31, 1978||Jun 10, 1980||Minnesota Mining And Manufacturing Company||Intermittent compression device|
|US4269175 *||Oct 30, 1978||May 26, 1981||Dillon Richard S||Promoting circulation of blood|
|US4281647 *||Oct 12, 1979||Aug 4, 1981||Antypas Philip G||Inflatable hand splint|
|US4375809 *||Nov 28, 1980||Mar 8, 1983||Meals Roy A||Inflatable hand pillow|
|US4805601 *||Mar 12, 1987||Feb 21, 1989||Eischen Sr Clement G||Device for lower limb extremity having weight-response pressure chambers|
|US4841956 *||Aug 20, 1987||Jun 27, 1989||Electro-Biology, Inc.||Apparatus for inducing venous-return flow from the leg|
|US4883462 *||Jan 30, 1987||Nov 28, 1989||Baxter Travenol Laboratories, Inc.||Blood extraction assist apparatus and method|
|US4945905 *||Feb 8, 1988||Aug 7, 1990||The Kendall Company||Compressible boot|
|US4947834 *||Feb 1, 1989||Aug 14, 1990||Beiersdorf Ag||Device for treating human extremities|
|US4971044 *||Mar 16, 1989||Nov 20, 1990||The Kendall Company||Method of manufacturing a compressible sleeve|
|US5000164 *||Jun 26, 1989||Mar 19, 1991||The United States Of America As Represented By The Secretary Of The Navy||Circulation enhancing apparatus|
|US5129916 *||Sep 27, 1990||Jul 14, 1992||Dennis Buonafede||System and method for driving venous blood from body extremity to prepare same for local anesthetic|
|US5139475 *||Aug 14, 1990||Aug 18, 1992||Francis Robicsek||Medical appliance for treating venous insufficiency|
|US5179941 *||Jun 6, 1989||Jan 19, 1993||Siems Otto Siemssen||Contractile sleeve element and compression sleeve made therefrom for the peristaltic treatment of extremities|
|US5218954 *||Jul 9, 1992||Jun 15, 1993||Bemmelen Paul S Van||Arterial assist device and method|
|US5396896 *||May 15, 1991||Mar 14, 1995||Chrono Dynamics, Ltd.||Medical pumping apparatus|
|US5443440 *||Jun 11, 1993||Aug 22, 1995||Ndm Acquisition Corp.||Medical pumping apparatus|
|US5584798 *||Mar 31, 1995||Dec 17, 1996||Novamedix Limited||Medical inflatable cuff appliance|
|US5596770 *||Nov 1, 1995||Jan 28, 1997||Kunesh; J. Denise||Two-ply inflatable sock|
|US5603690 *||Nov 29, 1990||Feb 18, 1997||South Glamorgan Health Authority||Inflatable supports|
|US5671751 *||Mar 21, 1995||Sep 30, 1997||Lrc Holding Company, Inc.||Medical pumping apparatus|
|US5769801 *||Oct 7, 1994||Jun 23, 1998||Ndm Acquisition Corp.||Medical pumping apparatus|
|US5807290 *||Jan 2, 1997||Sep 15, 1998||South Glamorgan Health Authority||Inflatable supports|
|US5840049 *||Sep 7, 1995||Nov 24, 1998||Kinetic Concepts, Inc.||Medical pumping apparatus|
|US5868690 *||Apr 30, 1997||Feb 9, 1999||Eischen, Sr.; Clement G.||Inflatable boot and method for its manufacture|
|US5931797 *||Dec 23, 1997||Aug 3, 1999||Kinetic Concepts, Inc.||Medical pumping apparatus|
|US6129688 *||Sep 6, 1996||Oct 10, 2000||Aci Medical||System for improving vascular blood flow|
|US6358219||Jun 27, 2000||Mar 19, 2002||Aci Medical||System and method of improving vascular blood flow|
|US6387065||Sep 30, 1996||May 14, 2002||Kinetic Concepts, Inc.||Remote controllable medical pumping apparatus|
|US6786879||Jun 24, 1998||Sep 7, 2004||Kci Licensing, Inc.||Gradient sequential compression system for preventing deep vein thrombosis|
|US6945944||Apr 1, 2002||Sep 20, 2005||Incappe, Llc||Therapeutic limb covering using hydrostatic pressure|
|US7044924||Jun 2, 2000||May 16, 2006||Midtown Technology||Massage device|
|US7717869||Feb 18, 2005||May 18, 2010||Eischco, Inc.||Pressure maintained inflatable boot|
|US7771376||Jan 25, 2006||Aug 10, 2010||Midtown Technology Ltd.||Inflatable massage garment|
|US7871387||Feb 23, 2004||Jan 18, 2011||Tyco Healthcare Group Lp||Compression sleeve convertible in length|
|US7896825 *||Jun 14, 2006||Mar 1, 2011||Bridgepoint Medical, Inc.||Medical compression devices and methods|
|US7931606||Dec 12, 2005||Apr 26, 2011||Tyco Healthcare Group Lp||Compression apparatus|
|US8016778||Apr 9, 2007||Sep 13, 2011||Tyco Healthcare Group Lp||Compression device with improved moisture evaporation|
|US8016779||Apr 9, 2007||Sep 13, 2011||Tyco Healthcare Group Lp||Compression device having cooling capability|
|US8021388||Oct 8, 2008||Sep 20, 2011||Tyco Healthcare Group Lp||Compression device with improved moisture evaporation|
|US8029450||Apr 9, 2007||Oct 4, 2011||Tyco Healthcare Group Lp||Breathable compression device|
|US8029451||Oct 14, 2008||Oct 4, 2011||Tyco Healthcare Group Lp||Compression sleeve having air conduits|
|US8034007||Apr 9, 2007||Oct 11, 2011||Tyco Healthcare Group Lp||Compression device with structural support features|
|US8070699||Apr 9, 2007||Dec 6, 2011||Tyco Healthcare Group Lp||Method of making compression sleeve with structural support features|
|US8079970||Sep 22, 2010||Dec 20, 2011||Tyco Healthcare Group Lp||Compression sleeve having air conduits formed by a textured surface|
|US8109892||Apr 9, 2007||Feb 7, 2012||Tyco Healthcare Group Lp||Methods of making compression device with improved evaporation|
|US8114117||Sep 30, 2008||Feb 14, 2012||Tyco Healthcare Group Lp||Compression device with wear area|
|US8128584||Apr 9, 2007||Mar 6, 2012||Tyco Healthcare Group Lp||Compression device with S-shaped bladder|
|US8162861||Apr 2, 2008||Apr 24, 2012||Tyco Healthcare Group Lp||Compression device with strategic weld construction|
|US8226585||Jan 23, 2006||Jul 24, 2012||Djo, Llc||Brace having inflatable support|
|US8235923||Sep 30, 2008||Aug 7, 2012||Tyco Healthcare Group Lp||Compression device with removable portion|
|US8454542 *||Aug 24, 2007||Jun 4, 2013||National University Corporation Nagoya University||Positive pressure chamber for extremities|
|US8506508||Apr 9, 2007||Aug 13, 2013||Covidien Lp||Compression device having weld seam moisture transfer|
|US8539647||Jul 19, 2006||Sep 24, 2013||Covidien Ag||Limited durability fastening for a garment|
|US8597215||Sep 16, 2011||Dec 3, 2013||Covidien Lp||Compression device with structural support features|
|US8622942||Nov 11, 2011||Jan 7, 2014||Covidien Lp||Method of making compression sleeve with structural support features|
|US8632840||Jan 31, 2012||Jan 21, 2014||Covidien Lp||Compression device with wear area|
|US8636678||Jul 1, 2008||Jan 28, 2014||Covidien Lp||Inflatable member for compression foot cuff|
|US8652079||Apr 2, 2010||Feb 18, 2014||Covidien Lp||Compression garment having an extension|
|US8721575||Jan 31, 2012||May 13, 2014||Covidien Lp||Compression device with s-shaped bladder|
|US8740828||Nov 9, 2011||Jun 3, 2014||Covidien Lp||Compression device with improved moisture evaporation|
|US8782812||May 23, 2006||Jul 22, 2014||Bha Altair, Llc||Waterproof breathable garment with tape-free seams|
|US8992449||Aug 12, 2013||Mar 31, 2015||Covidien Lp||Method of making compression sleeve with structural support features|
|US9084713||Aug 22, 2011||Jul 21, 2015||Covidien Lp||Compression device having cooling capability|
|US9107793||Dec 2, 2013||Aug 18, 2015||Covidien Lp||Compression device with structural support features|
|US20040158285 *||Apr 18, 2002||Aug 12, 2004||Jayamdiran Pillai||Pressure sock|
|US20100042027 *||Aug 24, 2006||Feb 18, 2010||National University Corporation Nagoya University||Positive pressure chamber for extremities|
|EP0150553A2 *||Jun 15, 1984||Aug 7, 1985||Novamedix Ltd||Medical appliance for applying a pumping action to the sole of a foot|
|EP1870064A1 *||Jun 21, 2007||Dec 26, 2007||JŠnos Darabos||Therapeutical equipment for treating aortic stenosis|
|EP2077102A1 *||Aug 24, 2007||Jul 8, 2009||National University Corporation Nagoya University||Positive pressure chamber for extremities|
|WO1985003219A1 *||Jan 30, 1985||Aug 1, 1985||Saggers Michael J||Inflatable garment for intermittent compression therapy|
|WO1988005667A1 *||Jan 29, 1988||Aug 11, 1988||Baxter Travenol Lab||Blood extraction assist apparatus and method|
|WO2002085265A1 *||Apr 18, 2002||Oct 31, 2002||Jayamdiran Pillai||Pressure sock|
|WO2008044400A1||Aug 24, 2007||Apr 17, 2008||Univ Nagoya Nat Univ Corp||Positive pressure chamber for extremities|
|U.S. Classification||601/152, 128/DIG.200|
|International Classification||A61F13/08, A61H23/04, A61B17/132|
|Cooperative Classification||A61F13/08, A61H9/0078, A61B17/132, Y10S128/20|
|European Classification||A61H9/00P6, A61F13/08, A61B17/132|