WO1996015702A1 - Inflatable blanket having openings formed therein - Google Patents
Inflatable blanket having openings formed therein Download PDFInfo
- Publication number
- WO1996015702A1 WO1996015702A1 PCT/US1995/014903 US9514903W WO9615702A1 WO 1996015702 A1 WO1996015702 A1 WO 1996015702A1 US 9514903 W US9514903 W US 9514903W WO 9615702 A1 WO9615702 A1 WO 9615702A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blanket
- openings
- patient
- forced air
- feet
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/0097—Blankets with active heating or cooling sources
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
- A47G9/02—Bed linen; Blankets; Counterpanes
- A47G9/0207—Blankets; Duvets
- A47G9/0215—Blankets; Duvets with cooling or heating means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F2007/0059—Heating or cooling appliances for medical or therapeutic treatment of the human body with an open fluid circuit
- A61F2007/006—Heating or cooling appliances for medical or therapeutic treatment of the human body with an open fluid circuit of gas
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S5/00—Beds
- Y10S5/941—Blanket with forced air flow
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Air Bags (AREA)
Abstract
The present invention relates to a blanket (100) for use with forced air convection system, wherein the blanket (100) includes openings (140, 145, 150, 155) through which a patient's toes or feet may protrude, the openings (140, 145, 150, 155) being located near the air inlet port (120) of the blanket (100). By providing a blanket (100) with such openings (140, 145, 150, 155), comfort for the patient can be increased and slippage of the blanket (100) can be reduced.
Description
INFLATABLE BLANKET HAVING OPENINGS FORMED THEREIN
Background
Hypothermia is a condition of subnormal body temperature and presents serious consequences to the patient suffering therefrom. It has been shown that nearly seventy five percent of all patients who undergo surgical procedures develop hypothermia. This equates to approximately fourteen million patients a year in the United States alone. The hypothermic condition is brought on by many factors including anesthesia, the air conditioning of the operating room, and the infusion of cold blood, I-V solutions, or irrigating fluids.
Several methods and products have been developed to help prevent hypothermia from occurring; such as the use of infrared lamps, cotton blankets, and warm water mattresses. However, none of these methods and products have proven completely successful. In fact, it has been shown that these methods and products can not even prevent- the patients from losing their endogenous heat. (See Journal of Post Anesthesia Nursing, Vol. 5, No. 4, August 1990, pp 254-263).
Another method of helping to prevent hypothermia that has proven very effective is the use of forced warm air convection. As early as 1937, a refrigeration blanket using cold air convection was suggested in U.S. Patent 2,093,834 to Gaugler. This blanket included a plurality of layers for channeling airflow from an inlet port. Non-inflatable portions were provided around the periphery of the blanket to secure the blanket around the body. Gaugler does not mention hypothermia treatment and does not suggest that the blanket could be used to supply warm air.
U.S. Patent 2,512,559 to Williams also relates to a blanket for providing cooled air to a person. The blanket in Williams comprised a plurality of thin sheets of material connected together at a plurality of discrete locations and connected together in a continuous line about the peripheral edge. An air inlet was provided to communicate with space between the sheets to allow cool air to be supplied thereto. Again, no mention of hypothermia treatment or the supply of warm air is made.
In U.S. Patent 4,572,188 to Augustine, et al., a forced air convection system which can supply either cool or warm air to a blanket is described. The blanket in Augustine, et al. comprises a plurality of inflatable hollow tubes having their interiors connected together through transverse openings. An entry port is provided in the upper surface of the blanket for admitting the cool or warm air and small exit ports are provided through the lower surface to allow the cool or warm air to flow out toward a body covered by the blanket.
Other patents relating to the supply of cool or warm air to a person through an inflatable blanket include U.S. Patents 4,660,388 to Greene, Jr.; 4,777,802 to Feher; and 4,867,230 to Voss. Each of these patents describe blankets having various attributes and configurations to supply cool or warm air to the person.
While there are a number of patents noted above and others not mentioned which relate to inflatable blankets for use in supplying cool or warm air to a patient, there remains a need in the art for improvements to forced air convection systems.
Objects Of The Invention
It is one object of the present invention to provide a blanket for a forced air convection system that is more comfortable for the patient when in use.
It is another object of the present invention to provide a blanket for a forced air convection system which remains in place on the patient more consistently.
Su-mηary f The Invention
The above objects and others are accomplished according to the present invention by providing a blanket having openings through which the patent's feet may protrude when the blanket is in use.
Brief Description f The Drawings
Fig. 1 is a plan view of a blanket for a forced air convection system according to one embodiment of the present invention.
Fig. 2 is a plan view of a blanket according to another embodiment of the present invention.
Detailed Description Of The Invention
Fig. 1 is a plan view of a blanket, generally designated by reference numeral 100, for a forced air convection system. The blanket, 100, has a generally rectangular shape and includes an inlet port 120. The blanket 100, may be of any standard design known in the prior art, but preferably comprises two sheets of material which are sealed together
along their peripheral edges and are connected together at connection spot welds 130, discretely located on the interior surface portions of the sheets. By connecting the sheets of the blanket 100, in this manner, the blanket 100, may be inflated by supplying air to the interior area formed between the sheets of material.
The inlet port 120, communicates with the interior of the blanket 100, and may be used to supply air to the interior of the blanket 100, so as to inflate blanket 100. The lower sheet of the blanket 100, may be provided with a plurality of small exit ports to allow air to escape from the blanket 100, toward a patient.
In use, the blanket 100, may be placed over the body of a patient so that the inlet port 120, is located between the legs of the patient in the vicinity of the patient's knees. With the inlet port 120, located in such a position the hose required for connection to an air supply will necessarily be located between the legs of the patient and will run from the connection with the inlet port 120, toward the patient's feet and beyond to the end of the operating table. This can be disadvantageous because the hose pulls the blanket down around the patient's legs and feet, which can cause significant discomfort to the patient. The greatest discomfort is in the area of the toes and feet of the patient which are often constrained and stressed by the pressure of the blanket and air hose.
A further general disadvantage of blankets for forced air systems arises because of the tendency of the blankets to slide about on the patient. This is especially true when the blankets are used to warm patients in a post anesthesia care
unit (PACU) following surgery, when patients are reviving from anesthesia and tend to move about. Such movements can cause a blan et to slide off of the patient and may result in uneven warming to the patient.
To overcome the disadvantages noted above, the blankets according to the present invention are provided with openings through which the patient's toes and feet can protrude.
In particular, as shown in Fig. 1, a pair of openings 140, 145, are provided. In the configuration shown in Fig. 1, the openings 140, 145 are formed in the shape of slits which run lengthwise with the blanket 100, but it will be recognized that almost any configuration which allows the patient's feet to protrude through the openings 140, 145, can be used.
In one embodiment of the present invention, the openings are permanently open. In this embodiment the openings are formed simply by sealing the two sheets of the blanket together around the peripheral edges of the openings. However, when the openings are permanently open warm air may constantly escape from below the blanket which may be undesirable in certain instances.
Therefore, in accordance with another embodiment of the present invention, as shown in Fig. 1, the openings 140, 145, are provided with perforations 150, 155, respectively. These perforations 150, 155 prevent the escape of warming air from the blanket 100, until such time as the perforations 150, 155 are opened.
As noted above, the openings may be formed in almost any configuration which allows the patient's toes or feet to
protrude therethrough. In particular, the openings may be slits which run lengthwise to the blanket, widthwise to the blanket, diagonally to the blanket or be composed of a combination of lengthwise and widthwise portions. Further, the openings may be circular, oval or rectangular in shape. Other geometric shapes are equally applicable to the present invention. When the openings are in the form of such a geometric shape, they may be initially open or may be initially closed by a perforated section which can be cutout or punched out by the user.
In addition, while the embodiments shown in the drawing figures show blankets have two openings, it will be recognized that one opening may be utilized, wherein the opening allows both feet of the patient to protrude therethrough.
A further embodiment of the present invention is shown in Fig. 2, wherein a blanket, generally designated be reference numeral 200, has an inlet port 220, and opening 240, 245, in the form of slits having both lengthwise and widthwise components. In this embodiment, the openings 240, 245 are initially closed but include perforations, 250, 255, to allow the openings 240, 245 to be opened. It will be recognized that the openings 240, 245, could be permanently open without the provision of perforations.
The blankets according to the present invention overcomes all of the disadvantages noted above. In particular, when in use, the blankets according to the present invention allow the patient's toes or feet to protrude through the openings. This helps to alleviate the pressure on the toes and feet of the patient and increases the comfort to the patient. In addition, when the toes or feet of the patient protrude
through the openings of the blanket, they act as a stabilizer and reduce the amount of slippage. This helps to keep the blanket in place on the patient and to maintain even heating to the patient.
The above embodiments have been described primarily as relating to blankets for use in the PACU. However, it will be recognized that the present invention is equally applicable for blankets to be used in the operating room or other areas of the hospital. In addition, the blankets shown in Figs. 1 and 2 represent full body blankets but would be equally applicable to blankets intended to cover only the lower body of a patient. Moreover, the blankets above have been primarily discussed as relating to providing warming to a patient, but would be equally applicable for cooling a patient, if so desired. Finally, the blankets according to the present invention would be equally useful in both adult and pediatric sized blankets.
The blanket may be formed of any suitable material capable of being sealed together at selected positions and having sufficient strength to allow inflation and adequate air distribution within the inflated portion. Such materials include plastics, non-woven wood pulp compositions, laminated plastic and wood pulp materials, and combinations thereof.
The foregoing has been a description of certain preferred embodiments of the present invention, but is not intended to limit the invention in any way. Rather, many modifications, variations and changes in details may be made within the scope of the present invention.
Claims
1. A blanket for use with a forced air convection system, wherein said blanket includes at openings through which a patient's toes or feet may protrude, said openings located near an inlet port of said blanket.
2. A blanket according to Claim 1, wherein said openings are in the shape of slits which run lengthwise along said blanket.
3. A blanket according to Claim 1, wherein said openings are in the shape of slits which run widthwise along said blanket.
4. A blanket according to Claim 1, wherein said openings are in the shape of slits which run diagonally along said blanket.
5. A blanket according to Claim 1, wherein said openings are in the shape of slits which include first portions running lengthwise along said blanket and second portions running widthwise along said blanket.
6. A blanket according to Claim 1, wherein said openings are have a geometric shape selected from the group consisting of circles, ovals, rectangles or polygons.
7. A blanket according to Claim 1, wherein said openings are initially closed by means of a perforated section of said blanket.
8. A blanket for use with a forced air convection system, wherein said blanket includes at least one opening through which a patient's toes or feet may protrude, said opening located near an inlet port of said blanket and said opening having a geometric shape selected from the group consisting of slits, circles, ovals, rectangles or polygons.
9. A method of preventing hypothermia, said method comprising: providing a blanket which may be used with a forced air convection system, wherein said blanket includes openings through which a patient's toes or feet may protrude, said openings located near an inlet port of said blanket; connecting said blanket to a supply source of forced air; and supplying forced air from said supply,source to said blanket.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT95939992T ATE236592T1 (en) | 1994-11-23 | 1995-11-13 | INFLATABLE CEILING WITH MOLDED OPENINGS |
DE69530314T DE69530314T2 (en) | 1994-11-23 | 1995-11-13 | INFLATABLE BLANKET WITH MOLDED OPENINGS |
JP8516970A JPH10509885A (en) | 1994-11-23 | 1995-11-13 | Inflatable blanket with opening |
EP95939992A EP0793434B1 (en) | 1994-11-23 | 1995-11-13 | Inflatable blanket having openings formed therein |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US34442594A | 1994-11-23 | 1994-11-23 | |
US08/344,425 | 1994-11-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996015702A1 true WO1996015702A1 (en) | 1996-05-30 |
Family
ID=23350497
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1995/014903 WO1996015702A1 (en) | 1994-11-23 | 1995-11-13 | Inflatable blanket having openings formed therein |
Country Status (6)
Country | Link |
---|---|
US (2) | US5890243A (en) |
EP (1) | EP0793434B1 (en) |
JP (1) | JPH10509885A (en) |
AT (1) | ATE236592T1 (en) |
DE (1) | DE69530314T2 (en) |
WO (1) | WO1996015702A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6354099B1 (en) | 2000-04-11 | 2002-03-12 | Augustine Medical, Inc. | Cooling devices with high-efficiency cooling features |
US7172616B2 (en) * | 2002-01-17 | 2007-02-06 | Nellcor Puritan Bennett Inc. | Inflatable blanket for use in cardiac surgery |
US6615427B1 (en) | 2002-10-28 | 2003-09-09 | Ellis R. Hailey | Vented bed sheet |
US8470012B2 (en) | 2004-09-08 | 2013-06-25 | Arizant Healthcare Inc. | Inflatable convective pad for surgery |
US7905911B2 (en) * | 2006-09-27 | 2011-03-15 | Nellcor Puritan Bennett Llc | Method and apparatus for connecting a hose to a warming blanket |
US7879078B2 (en) * | 2006-09-27 | 2011-02-01 | Nellcor Puritan Bennett Llc | Use of convective air warming system for patient care |
US7901443B2 (en) * | 2006-09-27 | 2011-03-08 | Nellcor Puritan Bennett Llc | Method and apparatus for inflating a warming blanket |
US8535362B2 (en) * | 2008-12-23 | 2013-09-17 | The Surgical Company Holding B.V. | Device for conveying air to a person |
US11395759B2 (en) * | 2014-08-18 | 2022-07-26 | Medline Industries, Lp | Method and apparatus pertaining to securement of a personal patient warming apparatus |
US10441006B2 (en) * | 2015-12-07 | 2019-10-15 | Medline Industries, Inc. | Patient-warming gown |
TWM550087U (en) * | 2017-03-22 | 2017-10-11 | 東莞雅康寧纖維製品有限公司 | Air conditioned bed |
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-
1995
- 1995-11-13 WO PCT/US1995/014903 patent/WO1996015702A1/en active IP Right Grant
- 1995-11-13 AT AT95939992T patent/ATE236592T1/en not_active IP Right Cessation
- 1995-11-13 DE DE69530314T patent/DE69530314T2/en not_active Expired - Fee Related
- 1995-11-13 JP JP8516970A patent/JPH10509885A/en active Pending
- 1995-11-13 EP EP95939992A patent/EP0793434B1/en not_active Expired - Lifetime
-
1996
- 1996-09-05 US US08/708,904 patent/US5890243A/en not_active Expired - Lifetime
-
1999
- 1999-01-19 US US09/233,088 patent/US6112348A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2722694A (en) * | 1952-09-17 | 1955-11-08 | Bryant Jayne | Restraining blanket |
US4574796A (en) * | 1983-10-28 | 1986-03-11 | Molnlycke Ab | Surgical sheet |
US5300102A (en) * | 1987-10-05 | 1994-04-05 | Augustine Medical, Inc. | Thermal blanket |
Also Published As
Publication number | Publication date |
---|---|
EP0793434B1 (en) | 2003-04-09 |
EP0793434A1 (en) | 1997-09-10 |
DE69530314D1 (en) | 2003-05-15 |
DE69530314T2 (en) | 2004-03-04 |
ATE236592T1 (en) | 2003-04-15 |
EP0793434A4 (en) | 1998-01-28 |
US5890243A (en) | 1999-04-06 |
JPH10509885A (en) | 1998-09-29 |
US6112348A (en) | 2000-09-05 |
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