Method and apparatus for heating solutions within intravenous lines to desired temperatures during infusion
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-007/12
출원번호
US-0016128
(2001-12-17)
등록번호
US-8226605
(2012-07-24)
발명자
/ 주소
Faries, Jr., Durward I.
Heymann, Bruce R.
Blankenship, Calvin
Hendrix, David
출원인 / 주소
Medical Solutions, Inc.
대리인 / 주소
Edell, Shapiro & Finnan, LLC
인용정보
피인용 횟수 :
18인용 특허 :
293
초록▼
An IV line temperature controlled warming device includes a housing and a fluid cassette or cartridge that receives fluid from an IV line and includes intravenous line tubing arranged in a preformed configuration. The configuration includes tubing sections arranged in generally circular and concentr
An IV line temperature controlled warming device includes a housing and a fluid cassette or cartridge that receives fluid from an IV line and includes intravenous line tubing arranged in a preformed configuration. The configuration includes tubing sections arranged in generally circular and concentric portions and a central serpentine tubing section that basically reverses fluid flow and facilitates flow in opposing directions within adjacent tubing sections. The fluid cassette is retained within the device on a base plate partially disposed within a device housing interior, while a housing cover is selectively opened and closed to permit access to the base plate. The base plate includes a heater plate disposed thereon, while the cover and heater plate each include heating elements to apply heat to opposing surfaces of the tubing cassette. The heating elements are controlled by a controller in response to measured temperatures of the heater plate and fluid.
대표청구항▼
1. A fluid cassette to receive fluid from an intravenous fluid line and facilitate heating of said fluid to a desired fluid temperature in a range of 60° F.-160° F. within an intravenous fluid warming device, said cassette comprising: fluid line tubing including an inlet tubing portion with an inlet
1. A fluid cassette to receive fluid from an intravenous fluid line and facilitate heating of said fluid to a desired fluid temperature in a range of 60° F.-160° F. within an intravenous fluid warming device, said cassette comprising: fluid line tubing including an inlet tubing portion with an inlet terminal to receive fluid into said cassette from said intravenous fluid line and an outlet tubing portion with an outlet terminal to release fluid from said cassette to said intravenous line, said inlet and outlet terminals each including a connector for connection to portions of said intravenous fluid line; anda conductive contact disposed about a portion of said fluid line tubing and detectable by said intravenous fluid warming device to indicate the presence of said cassette within that warming device and control device operation;wherein said fluid line tubing further includes a spiral portion including a plurality of nested tubing sections in fluid communication with said inlet and outlet tubing portions and arranged adjacent each other to directly transfer heat between said adjacent tubing sections to heat said fluid from said intravenous fluid line, each said tubing section defining a path for said fluid from said intravenous fluid line to flow in a particular direction, and wherein said fluid flow direction within each tubing section is opposite the fluid flow direction within each tubing section adjacent that section;wherein the quality of said tubing within said spiral portion is based on providing a residence time for said fluid within said fluid line tubing enabling said intravenous fluid warming device to heat said fluid to said desired temperature within said range of 60° F.-160° F. 2. The fluid cassette of claim 1, wherein said tubing sections are concentric and define a fluid cassette annular section, and said inlet and said outlet tubing portions extend tangentially from said annular section. 3. The fluid cassette of claim 2, wherein said annular section includes an intermediate section to direct fluid flow received from said inlet terminal in a reverse direction through said annular section tubing sections toward said outlet terminal. 4. The fluid cassette of claim 1 further including a fitting in fluid communication with said fluid line tubing to permit fluid to flow within said fitting, wherein said fitting receives a temperature sensor to measure temperature of said fluid flowing within said fluid cassette. 5. The fluid cassette of claim 4, wherein said fitting includes a thermally conductive member disposed within said fitting and in direct contact with fluid flowing through said fitting, wherein said thermally conductive member receives said temperature sensor to measure temperature of said fluid flowing within said fluid cassette. 6. The fluid cassette of claim 1 further including at least one engagement member to facilitate manipulation, insertion and removal of said fluid cassette within said warming device. 7. A fluid cassette to receive fluid from an intravenous fluid line and facilitate heating of said fluid to a desired fluid temperature in a range of 60° F.-160° F. within an intravenous fluid warming device, said cassette comprising: fluid flow means including an inlet portion with an inlet terminal to receive fluid into said cassette from said intravenous fluid line and an outlet portion with an outlet terminal to release fluid from said cassette to said intravenous line, said inlet and outlet portions each including a connector for connection to portions of said intravenous fluid line;anda conductive contact disposed about a portion of said fluid flow means and detectable by said intravenous fluid warming device to indicate the presence of said cassette within that warming device and control device operation;wherein said fluid flow means further includes a plurality of concentric sections in fluid communication with said inlet and outlet portions and arranged adjacent each other to directly transfer heat between said adjacent sections to heat said fluid from said intravenous fluid line, each said concentic section defines a path for said fluid from said intravenous fluid line to flow in a particular direction, and wherein said fluid flow direction within each concentric section is opposite the fluid flow direction within each concentric section adjacent that section;wherein the quality of said sections is based on providing a residence time for said fluid within said fluid flow means enabling said intravenous fluid warming device to heat said fluid to said desired temperature within said range of 60° F.-160° F. 8. The fluid cassette of claim 7, wherein said concentric sections define a fluid cassette annular section, and said inlet and said outlet portions extend tangentially from said annular section. 9. The fluid cassette of claim 8, wherein said annular section includes an intermediate section to direct fluid flow received from said inlet terminal in a reverse direction through said annular section toward said outlet terminal. 10. The fluid cassette of claim 7 further including a fitting in fluid communication with said fluid flow means to permit fluid to flow within said fitting, wherein said fitting receives a temperature sensor to measure temperature of said fluid flowing within said fluid cassette. 11. The fluid cassette of claim 7 further including at least one engagement means for facilitating manipulation, insertion and removal of said fluid cassette within said warming device. 12. A fluid cassette to receive fluid from an intravenous fluid line and facilitate heating of said fluid to a desired fluid temperature in a range of 60° F.-160° F. within an intravenous fluid warming device, said cassette comprising: a fluid conduit including an inlet portion with an inlet terminal to receive fluid into said cassette from a said intravenous fluid line and an outlet portion with an outlet terminal to release fluid from said cassette to said intravenous line, said inlet and outlet portions each including a connector for connection to portions of said intravenous fluid line; anda conductive contact disposed about a portion of said fluid conduit and detectable by said intravenous fluid warming device to indicate the presence of said cassette within that warming device and control device operation;wherein said fluid conduit further includes a plurality of concentric sections in fluid communication with said inlet and outlet portions and arranged adjacent each other to directly transfer heat between said adjacent sections to heat said fluid from said intravenous fluid line, each said concentric section defines a path for said fluid from said intravenous fluid line to flow in a particular direction, and wherein said fluid flow direction within each concentric section is opposite the fluid flow direction within each concentric section adjacent that section;wherein the quality of said sections is based on providing a residence time for said fluid within said fluid conduit enabling said intravenous fluid warming device to heat said fluid to said desired temperature within said range of 60° F.-160° F. 13. The fluid cassette of claim 12, wherein said concentric sections define a fluid cassette annular section, and said inlet and said outlet portions extend tangentially from said annular section. 14. The fluid cassette of claim 13, wherein said annular section includes an intermediate section to direct fluid flow received from said inlet terminal in a reverse direction through said annular section toward said outlet terminal. 15. The fluid cassette of claim 12 further including a fitting in fluid communication with said fluid conduit to permit fluid to flow within said fitting, wherein said fitting receives a temperature sensor to measure temperature of said fluid flowing within said fluid cassette. 16. The fluid cassette of claim 12 further including at least one engagement member to facilitate manipulation, insertion and removal of said fluid cassette within said warming device.
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