CA1075989A - Thermal device - Google Patents
Thermal deviceInfo
- Publication number
- CA1075989A CA1075989A CA278,724A CA278724A CA1075989A CA 1075989 A CA1075989 A CA 1075989A CA 278724 A CA278724 A CA 278724A CA 1075989 A CA1075989 A CA 1075989A
- Authority
- CA
- Canada
- Prior art keywords
- fluid
- thermal device
- discontinuous
- passages
- compartment
- 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
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated conduits
-
- 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
- A61F2007/0054—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (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)
Abstract
THERMAL DEVICE
ABSTRACT OF THE DISCLOSURE
A thermal device for providing area heating or cooling of a mamalian body or limb thereof comprises a flexible pad formed from two overlying sheets of fluid impervious material. The sheets are peripherally sealed together to form a fluid tight compartment. Fluid inlet and outlet means are provided to communicate with the compartment which is provided with a plurality of fluid directing passages. The fluid directing passages are defined by a large plurality of oriented, discontin-uous sealed areas.
ABSTRACT OF THE DISCLOSURE
A thermal device for providing area heating or cooling of a mamalian body or limb thereof comprises a flexible pad formed from two overlying sheets of fluid impervious material. The sheets are peripherally sealed together to form a fluid tight compartment. Fluid inlet and outlet means are provided to communicate with the compartment which is provided with a plurality of fluid directing passages. The fluid directing passages are defined by a large plurality of oriented, discontin-uous sealed areas.
Description
- BACKGROUND OF THE INVENTION
This invention relates to personal thermal devices~and particularly to personal heating and cooling apparatus of the types wherein a temperature controlling fluid is circulated through a thin, flexible heat exchange structure. Such thermal devices have been~~known and used for many years in a variety of applications, Generally, these devices have rc~omp~ hoses or similar articles arranged in various patterns throughout a pad or matrix of some design which may or may not have been covered with a cloth material. Some devices have employed single passageways in various configurations and other devices have employed multiple passageways in order to provide a large heat transferning area within a given sized pad or blanket. All of these prior art devices have suffered from a particular problem which has generally been called "pinch off". The problem of pinch off manifests itself when a thermal pad or blanket has one of the fluid passages kinked or otherwise obstructed so that the flow of fluid therefhrough is prevented.
.~ ' , 1 , : , .: .' . .
1075'~
.; .
When this occurs the function of the device is immediately destroyed. It has been proposed in the past to use a hard, - pinch off resistant material for the fluid passage; however, when such a material is used it becomes difficult to bend the pad or it becomes uncomfortable for a patient or user who is employing the pad.
It would, therefore, be an advance in the art if a thermal device of this nature could be provided which obviated or greatly reduced the problems associated with pinch off. Prior art pads or thermal devices have also been troubled by a wide temperature variances across the pad, caused primarily by the elongated, serpentine configurations of the fluid passages. These long passages, with their continuous welds, also made the pads less flexible than desired and made them difficult to wrap about a limb.
.~:
Prior art devices of this type have al~o had the problem of not being capable of being folded. Folding immediately . .
cuased a pinch-off condition. Therefore, it would be a further . advance in the art if a pad were provided which could be folded ....
- 20 many different ways and still maintàin fluid flow.
O JECTS AND~SUMMARY OF THE INVENTION
It is, therefore, an object of the invention to obviate . ..
the disadvantages of the prior art.
It is another object of the invention to enhance the operation of thermal devices.
Yet another object of the invention is the provision of a thermal device that is almost impossible to pinch off.
Yet another object of the invention is the provision of a thermal device that can be folded to smaller sizes and still maintain fluid flow in the smaller size.
.
1~37S9~9 Still another object of t~e ~ invention is the provision of a thermal device that has a very small temperature difference between various areas of the device, Another object of the invention is the provision of a thermal device that conforms easily to uneven body contours.
These objects are accomplished in one aspect of the invention by the provision of a thermal device for providing area heating or cooling by means of continuous fluid flow comprising a flexible pad formed from two overlying sheets of fluid impervious material peripherally sealed to form a fluid tight compartment; fluid inlet means and fluid outlet means communica-ting with said compartment, said inlet means and said outlet means being closely adjacent; and a plurality of fluid directing passages formed within said compartment, said passages being defined by a large plurality of discontinuous sealed areas having a given space therebetween, said sealed areas being discontinuous in all directions and defining a multiplicity of alternate flow ~ paths for said fluid.
- BRIEF DESCRIPTION OF THE DRAWINGS
..
Fig. 1 is a plan view of one embodiment of the invention;
Fig. 2 is a perspective view of a pad folded in half;
Fig. 3 is a perspective view of a pad folded in quarters; and Fig. 4 is an elevational view of an alternate hose termination;
. ,~
Figs. 5-7 are additional views of alternate embodiments of hose terminations; and Fig. 8 is a plan view of the embodiment of Fig. 4.
.
, : :
10759~
DESCRIPTION ~F THE PREFERRE~ EMBODIMENTS
For a better understanding of the present invention, together with other and further objects, advantages, and capa-bilities thereof, reference is made to the following disclosure and appended claims taken in conjunction with the above-described drawings.
Referring now to the drawings with greater particularity there is shown in Fig. 1 a thermal device 10 for providing area heating or cooling to a mammalian body or limb thereof. Device 10 comprises a flexible pad formed from two overlying sheets 12 and 14 of fluid impervious material such as sheet vinyl. The sheets 12 and 14 are provided with a peripheral seal 16 to form a fluid tight compartment 18. Fluid inlet means 20 and fluid outlet means 22 in the form of hoses 20a and 22a, respectively, are provided in one section of the device 10 and communicate at one end thereof with compartment 18. The other ends thereof are connected, respectively, to a fluid source and a fluid drain, `-~. not shown.
A plurality of fluid carrying passages 24 are provided within compartment 18, these passages being defined by a large plurality of oriented, discontinuous sealed areas 26 having a given space, designated as A, therebetween. In the instant embodiment of Fig. 1, the sealed areas 26 are circular in configuration, this shape providing strength as well as even fluid flow thereabout;
however, it is to be understood that other geometric shapes can be employed, such as squares, rectangles, bars, ovals, etc.
When the material is vinyl, the sealed areas and peripheral seal can be formed by dielectric welding.
107S9~3 In the preferred embodiment, at least one of the fluid directing passages is formed to provide a fluid inlet passage 24a and at least one other of the fluid directing passages is formed to provide a fluid outlet passage 24b. The passages 24a and 24b are separated from the remainder of the passages by oriented, discontinuous sealed areas 26a and 26b, which areas have a spacing B therebetween which is less than A. As an aid to venti~
lation, some or all of the seal areas 26, 26a and 26b can be provided with apertures 27 therethrough.
The serpentine arrows overlying the passages 24, 24a, and 24b in Fig. l indicate the normal direction of fluid flow there_ through. It can clearly be seen from viewing this Fig. l that a pinch-off between any two or more areas 26 will have virtually no effect upon the fluid flow, since such a restricted area will simply be bypassed.
A further advantage of this construction is illustrated in Figs. 2 and 3 which show, respectively, a device lO folded in half and a device lO folded in quarters. In each of these conditions the available section of the device lO which communicates with i`''l the inlet and outlet means 20 and 22, continues to function normally.
The pattern of the sealed areas 26 which form the main body of device lO is capable of many variations: e.g., the pattern in Fig. l is a linear, square design having sealed areas at the corners of a square with alternate rows being offset by l/2 square.
Hexagonal patterns are also appropriate as are non-linear patterns.
The particular pattern employed will determine the direction of fluid flow.
: - _5_ ' :
iO7S9~9 The peripheral seal 16 also performs a function in aiding fluid flow, and is preferably provided with rounded corners.
A further area where pinch-off has always been a problem is that area immediately adjacent the point where the fluid inlet and outlet means join the interior of the compartment 18. This condition is effectively reduced or eliminated by insuring that hoses 20a and 22a terminate within compartment 18 in a discontinuous plane. This can be accomplished as shown in Fig. 1 by extending one of the hoses further into compartment 18 than 10 the other. Alternatively, the discontinuous plane can be provided at the terminal end of the hose.
:
~ In Fig. 4 the terminal end of inlet hose 20a is provided - with a single V notch 28.
In Fig. 5 the end is provided with multiple, elongated V
notches 30; in Fig. 6 perforations 32 are provided; and in Fig.
~ 7 a single diagonal cut 34 Fig. 8 is a plan view of the hose - of Fig. 4.
When formed with either of these therminations a discontin_ ` uous plane exists within compartment 18, thereby making it extremely difficult for a pinch-off to occur in this area, It will be seen from the above description ~hat a new and ~;
~ novel thermal device is created. The device has many advantages , . .
over the prior art, namely- it can be folded and still function;
it is virtually impossible to pinch off; it is simple and economical to fabricate; and it can be covered and used to ; dispense medicaments or be moistened for wet heat applications.
The lack of continuous welded serpentine passages makes the device more flexible when fluid filled and allows ready conformance with uneven body areas.
Further, tests with water of about 105F have shown less than about 3F to 4F temperature variation between various parts of the device.
~07S~89 While there has been shown and described what are at present cons;dered to be the preferred embodiments of the preferred : embodiments of the invention, it will be obvious to those skilled ;~ in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined by the appended claims.
.~ .
.. . .
.
This invention relates to personal thermal devices~and particularly to personal heating and cooling apparatus of the types wherein a temperature controlling fluid is circulated through a thin, flexible heat exchange structure. Such thermal devices have been~~known and used for many years in a variety of applications, Generally, these devices have rc~omp~ hoses or similar articles arranged in various patterns throughout a pad or matrix of some design which may or may not have been covered with a cloth material. Some devices have employed single passageways in various configurations and other devices have employed multiple passageways in order to provide a large heat transferning area within a given sized pad or blanket. All of these prior art devices have suffered from a particular problem which has generally been called "pinch off". The problem of pinch off manifests itself when a thermal pad or blanket has one of the fluid passages kinked or otherwise obstructed so that the flow of fluid therefhrough is prevented.
.~ ' , 1 , : , .: .' . .
1075'~
.; .
When this occurs the function of the device is immediately destroyed. It has been proposed in the past to use a hard, - pinch off resistant material for the fluid passage; however, when such a material is used it becomes difficult to bend the pad or it becomes uncomfortable for a patient or user who is employing the pad.
It would, therefore, be an advance in the art if a thermal device of this nature could be provided which obviated or greatly reduced the problems associated with pinch off. Prior art pads or thermal devices have also been troubled by a wide temperature variances across the pad, caused primarily by the elongated, serpentine configurations of the fluid passages. These long passages, with their continuous welds, also made the pads less flexible than desired and made them difficult to wrap about a limb.
.~:
Prior art devices of this type have al~o had the problem of not being capable of being folded. Folding immediately . .
cuased a pinch-off condition. Therefore, it would be a further . advance in the art if a pad were provided which could be folded ....
- 20 many different ways and still maintàin fluid flow.
O JECTS AND~SUMMARY OF THE INVENTION
It is, therefore, an object of the invention to obviate . ..
the disadvantages of the prior art.
It is another object of the invention to enhance the operation of thermal devices.
Yet another object of the invention is the provision of a thermal device that is almost impossible to pinch off.
Yet another object of the invention is the provision of a thermal device that can be folded to smaller sizes and still maintain fluid flow in the smaller size.
.
1~37S9~9 Still another object of t~e ~ invention is the provision of a thermal device that has a very small temperature difference between various areas of the device, Another object of the invention is the provision of a thermal device that conforms easily to uneven body contours.
These objects are accomplished in one aspect of the invention by the provision of a thermal device for providing area heating or cooling by means of continuous fluid flow comprising a flexible pad formed from two overlying sheets of fluid impervious material peripherally sealed to form a fluid tight compartment; fluid inlet means and fluid outlet means communica-ting with said compartment, said inlet means and said outlet means being closely adjacent; and a plurality of fluid directing passages formed within said compartment, said passages being defined by a large plurality of discontinuous sealed areas having a given space therebetween, said sealed areas being discontinuous in all directions and defining a multiplicity of alternate flow ~ paths for said fluid.
- BRIEF DESCRIPTION OF THE DRAWINGS
..
Fig. 1 is a plan view of one embodiment of the invention;
Fig. 2 is a perspective view of a pad folded in half;
Fig. 3 is a perspective view of a pad folded in quarters; and Fig. 4 is an elevational view of an alternate hose termination;
. ,~
Figs. 5-7 are additional views of alternate embodiments of hose terminations; and Fig. 8 is a plan view of the embodiment of Fig. 4.
.
, : :
10759~
DESCRIPTION ~F THE PREFERRE~ EMBODIMENTS
For a better understanding of the present invention, together with other and further objects, advantages, and capa-bilities thereof, reference is made to the following disclosure and appended claims taken in conjunction with the above-described drawings.
Referring now to the drawings with greater particularity there is shown in Fig. 1 a thermal device 10 for providing area heating or cooling to a mammalian body or limb thereof. Device 10 comprises a flexible pad formed from two overlying sheets 12 and 14 of fluid impervious material such as sheet vinyl. The sheets 12 and 14 are provided with a peripheral seal 16 to form a fluid tight compartment 18. Fluid inlet means 20 and fluid outlet means 22 in the form of hoses 20a and 22a, respectively, are provided in one section of the device 10 and communicate at one end thereof with compartment 18. The other ends thereof are connected, respectively, to a fluid source and a fluid drain, `-~. not shown.
A plurality of fluid carrying passages 24 are provided within compartment 18, these passages being defined by a large plurality of oriented, discontinuous sealed areas 26 having a given space, designated as A, therebetween. In the instant embodiment of Fig. 1, the sealed areas 26 are circular in configuration, this shape providing strength as well as even fluid flow thereabout;
however, it is to be understood that other geometric shapes can be employed, such as squares, rectangles, bars, ovals, etc.
When the material is vinyl, the sealed areas and peripheral seal can be formed by dielectric welding.
107S9~3 In the preferred embodiment, at least one of the fluid directing passages is formed to provide a fluid inlet passage 24a and at least one other of the fluid directing passages is formed to provide a fluid outlet passage 24b. The passages 24a and 24b are separated from the remainder of the passages by oriented, discontinuous sealed areas 26a and 26b, which areas have a spacing B therebetween which is less than A. As an aid to venti~
lation, some or all of the seal areas 26, 26a and 26b can be provided with apertures 27 therethrough.
The serpentine arrows overlying the passages 24, 24a, and 24b in Fig. l indicate the normal direction of fluid flow there_ through. It can clearly be seen from viewing this Fig. l that a pinch-off between any two or more areas 26 will have virtually no effect upon the fluid flow, since such a restricted area will simply be bypassed.
A further advantage of this construction is illustrated in Figs. 2 and 3 which show, respectively, a device lO folded in half and a device lO folded in quarters. In each of these conditions the available section of the device lO which communicates with i`''l the inlet and outlet means 20 and 22, continues to function normally.
The pattern of the sealed areas 26 which form the main body of device lO is capable of many variations: e.g., the pattern in Fig. l is a linear, square design having sealed areas at the corners of a square with alternate rows being offset by l/2 square.
Hexagonal patterns are also appropriate as are non-linear patterns.
The particular pattern employed will determine the direction of fluid flow.
: - _5_ ' :
iO7S9~9 The peripheral seal 16 also performs a function in aiding fluid flow, and is preferably provided with rounded corners.
A further area where pinch-off has always been a problem is that area immediately adjacent the point where the fluid inlet and outlet means join the interior of the compartment 18. This condition is effectively reduced or eliminated by insuring that hoses 20a and 22a terminate within compartment 18 in a discontinuous plane. This can be accomplished as shown in Fig. 1 by extending one of the hoses further into compartment 18 than 10 the other. Alternatively, the discontinuous plane can be provided at the terminal end of the hose.
:
~ In Fig. 4 the terminal end of inlet hose 20a is provided - with a single V notch 28.
In Fig. 5 the end is provided with multiple, elongated V
notches 30; in Fig. 6 perforations 32 are provided; and in Fig.
~ 7 a single diagonal cut 34 Fig. 8 is a plan view of the hose - of Fig. 4.
When formed with either of these therminations a discontin_ ` uous plane exists within compartment 18, thereby making it extremely difficult for a pinch-off to occur in this area, It will be seen from the above description ~hat a new and ~;
~ novel thermal device is created. The device has many advantages , . .
over the prior art, namely- it can be folded and still function;
it is virtually impossible to pinch off; it is simple and economical to fabricate; and it can be covered and used to ; dispense medicaments or be moistened for wet heat applications.
The lack of continuous welded serpentine passages makes the device more flexible when fluid filled and allows ready conformance with uneven body areas.
Further, tests with water of about 105F have shown less than about 3F to 4F temperature variation between various parts of the device.
~07S~89 While there has been shown and described what are at present cons;dered to be the preferred embodiments of the preferred : embodiments of the invention, it will be obvious to those skilled ;~ in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined by the appended claims.
.~ .
.. . .
.
Claims (15)
1. A thermal device for providing area heating or cooling by means of continuous fluid flow comprising a flexible pad formed from two overlying sheets of fluid impervious material peripherally sealed to form a fluid tight compartment; fluid inlet means and fluid outlet means communicating with said compartment, said inlet means and said outlet means being closely adjacent; and a plurality of fluid directing passages formed within said compartment, said passages being defined by a large plurality of discontinuous sealed areas having a given space therebetween, said sealed areas being discontinuous in all directions and defining a multiplicity of alternate flow paths for said fluid.
2. The thermal device of claim 1 wherein said fluid inlet means and said fluid outlet means terminate within said compartment in a discontinuous plane.
3. The thermal device of claim 1 wherein at least one of said fluid directing passages is formed to provide a fluid inlet passage communicating with said fluid inlet means and at least one of said fluid passages is formed to provide a fluid outlet passage communicating with said fluid outlet means.
4. The thermal device of claim 3 wherein said at least one fluid inlet passage and said at least one fluid outlet passage are separated from the remainder of said plurality of fluid passages by discontinuous sealed areas having a spacing less than said given spacing.
5. The thermal device of claim 4 wherein said discontinuous sealed areas are substantially circular.
6. The thermal device of claim 4 wherein said discontinuous sealed areas are non-circular.
7. The thermal device of claim 2 wherein said inlet means and said outlet means comprise hoses.
8. The thermal device of claim 7 wherein said discontinuous plane for the terminal part of said hoses is achieved by extending one hose further into said compartment than the other hose.
9. The thermal device of claim 7 wherein said discontinuous plane for the terminal part of said hoses is achieved by notches formed therein.
10. The thermal device of claim 7 wherein said discontinuous plane for the terminal part of said hoses is achieved by a diagonal termination.
11. The thermal device of claim 7 wherein said discontinuous plane for the terminal part of said hoses is achieved by perforating said terminal part.
12. The thermal device of claim 3 wherein said discontinuous sealed areas not forming part of said inlet and outlet passages are arrayed in a linear pattern.
13. The thermal device of claim 3 wherein said discontinuous sealed areas not forming part of said inlet and outlet passages are arrayed in a non-linear pattern.
14. The thermal device of claim 1 wherein said fluid impervious material is a dielectrically weldable vinyl.
15. The thermal device of claim 14 wherein said peripheral seal and said discontinuous sealed areas are dielectrically welded.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US68874576A | 1976-05-21 | 1976-05-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1075989A true CA1075989A (en) | 1980-04-22 |
Family
ID=24765601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA278,724A Expired CA1075989A (en) | 1976-05-21 | 1977-05-18 | Thermal device |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS601019B2 (en) |
| CA (1) | CA1075989A (en) |
| DE (1) | DE2722613C2 (en) |
| FR (1) | FR2352268A1 (en) |
| GB (1) | GB1566207A (en) |
| IT (1) | IT1085773B (en) |
| SE (1) | SE7705862L (en) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55146394A (en) * | 1979-05-01 | 1980-11-14 | Du Pont | Heat exchanger and heat exchanger element |
| US4393923A (en) * | 1980-09-02 | 1983-07-19 | Press Jack J | Contour-adaptive atmospheric heat exchange apparatus |
| US4524757A (en) * | 1981-04-28 | 1985-06-25 | Bruce Shawn Buckley | Solar collector, heat exchanger or hot water storage tank and method of forming same |
| US4471759A (en) * | 1981-04-28 | 1984-09-18 | B. Shawn Buckley | Method of forming a solar collector or hot water storage tank and solar water heating apparatus using same |
| AU3881685A (en) * | 1984-01-18 | 1985-08-09 | Bailey David Franklin | Multi-layer disposable medical thermal blanket |
| JPS6258707A (en) * | 1985-09-06 | 1987-03-14 | Sanyo Electric Co Ltd | Amplifier circuit for hall element |
| US4709688A (en) * | 1986-03-25 | 1987-12-01 | Paradis Roger O | Open cell sheeting |
| US4763641A (en) * | 1986-05-29 | 1988-08-16 | Smith William F | Solar energy absorber |
| DE3707674A1 (en) * | 1987-03-10 | 1988-09-22 | Walter Swoboda | Heating or cooling cushion for therapeutic purposes |
| US5405371A (en) | 1987-10-05 | 1995-04-11 | Augustine Medical, Inc. | Thermal blanket |
| DE3869721D1 (en) | 1987-10-05 | 1992-05-07 | Augustine Medical Inc | WARMING BLANKET. |
| EP0316510B1 (en) * | 1987-11-17 | 1993-08-11 | Shinwa Sangyo Co., Ltd. | Heat exchanger for cooling tower |
| US5964792A (en) * | 1996-08-02 | 1999-10-12 | Augustine Medical, Inc. | Convertible thermal blanket |
| US5545194A (en) * | 1994-09-30 | 1996-08-13 | Augustine Medical, Inc. | Convertible thermal blanket |
| US5773275A (en) | 1995-09-21 | 1998-06-30 | Augustine Medical, Inc. | Inflatable thermal blanket with provision for being secured during use |
| US5697963A (en) * | 1995-12-20 | 1997-12-16 | Augustine Medical, Inc. | Thermal blanket for a patient sitting in a chair |
| GB2316872A (en) * | 1996-09-10 | 1998-03-11 | Secr Defence | Cooling cuff |
| US5941907A (en) * | 1997-06-02 | 1999-08-24 | Augustine Medical, Inc. | Surgical barrier device incorporating an inflatable thermal blanket with a surgical drape to provide thermal control and surgical access |
| US6176870B1 (en) | 1997-08-13 | 2001-01-23 | Augustine Medical, Inc. | Inflatable thermal blanket with surgical access for use with patients in the lithotomy position |
| US5824025A (en) * | 1997-08-20 | 1998-10-20 | Augustine Medical, Inc. | System for convective warming of a patient during cardiac surgery |
| DE10065592A1 (en) * | 2000-12-28 | 2002-07-04 | Werner Sinnig | Method of hot-cold treatment of migraine involves using head band with pads to apply heat or cold to blood vessels in head |
| US6709447B1 (en) | 2002-11-20 | 2004-03-23 | Adroit Development, Inc. | Inflatable thermal blanket |
| WO2009049639A1 (en) * | 2007-10-11 | 2009-04-23 | Hilotherm Holding Ag | Temperature-control device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE215553C (en) * | ||||
| FR789692A (en) * | 1934-05-08 | 1935-11-04 | S N I M S A | Device intended to receive a fluid in continuous movement for medical applications |
| US2062864A (en) * | 1935-09-30 | 1936-12-01 | Samuel C Clark | Heating system for vehicle bodies |
| FR843521A (en) * | 1937-10-07 | 1939-07-05 | Sophisticated flexible hot water bottle | |
| US2397232A (en) * | 1944-05-06 | 1946-03-26 | Eugene L Barnes | Flexible applicator |
| US3211216A (en) * | 1952-09-13 | 1965-10-12 | Calmac Corp | Personal thermal device |
| US3112792A (en) * | 1952-09-13 | 1963-12-03 | Jet Heet Inc | Personal thermal device |
-
1977
- 1977-05-17 SE SE7705862A patent/SE7705862L/en not_active Application Discontinuation
- 1977-05-18 CA CA278,724A patent/CA1075989A/en not_active Expired
- 1977-05-20 IT IT2379877A patent/IT1085773B/en active
- 1977-05-20 FR FR7715583A patent/FR2352268A1/en active Granted
- 1977-05-20 JP JP5779877A patent/JPS601019B2/en not_active Expired
- 1977-05-21 DE DE19772722613 patent/DE2722613C2/en not_active Expired
- 1977-05-23 GB GB2165677A patent/GB1566207A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5310578A (en) | 1978-01-31 |
| FR2352268A1 (en) | 1977-12-16 |
| IT1085773B (en) | 1985-05-28 |
| SE7705862L (en) | 1977-11-22 |
| GB1566207A (en) | 1980-04-30 |
| FR2352268B1 (en) | 1984-01-20 |
| DE2722613A1 (en) | 1977-12-01 |
| JPS601019B2 (en) | 1985-01-11 |
| DE2722613C2 (en) | 1986-09-04 |
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