Unlock instant, AI-driven research and patent intelligence for your innovation.

Heater for physiological fluids

a physiological fluid and heating apparatus technology, applied in the field of physiological fluid heating apparatus, can solve the problems of difficult to maintain the sterility of the heating apparatus in these systems, and achieve the effect of preventing damage to the fluid and rapid heating of the cellular fluid

Inactive Publication Date: 2006-04-18
SMITHS MEDICAL ASD INC
View PDF17 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]The invention is a self-contained, free standing system which permits controlled, but rapid heating of cellular fluids as they are being administered to a patient. The heating of the cellular fluids is controlled to prevent damage to the fluids from various causes including overheating.
[0009]The heat exchanger is easily installed on the pole, which includes a fixed mounting block and a movable mounting block. Opposite ends of the heat exchanger comprise nipples which are received in O-ring containing recesses in the mounting blocks. Thus, installation and removal of the disposable heat exchanger are quite easy.

Problems solved by technology

It is quite difficult to maintain sterility of the heating apparatus in these systems after the first use because of the complexity of the heat exchangers.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heater for physiological fluids
  • Heater for physiological fluids
  • Heater for physiological fluids

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019]FIG. 1 is an exploded view of a preferred embodiment of the invention. A base 2, which preferably has wheels for ease of mobility, supports a pole 4 and a heating unit 6. Pole 4 removably receives a disposable unit 8 which includes a heat exchanger 10 and a filter 12. Tube 14 is in fluid communication with one end of heat exchanger 10 and connects it to a pair of bags spikes 16. The bag spikes are known in the art and are used to puncture and allow the dispensing of a body fluid from a storage bag. Tube 18 connects a lower end of heat exchanger 10 to an upper end of filter 12 and tube 20 connects a lower end of filter 12 to cannula 22 to allow fluids to be introduced into a patient. As will be more fully described below, the entire unit 8 is manufactured of an inexpensive material and is disposable to ensure sterility.

[0020]FIG. 2 is a longitudinal cross-section of pole 4 with heat exchanger 10 partially mounted thereon. Pole 4 includes a housing 24 which is attached to base 2...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A self-contained portable unit for heating physiological fluids is disclosed. A heat exchanger is disposable to ensure sterility, and the hot exchanger is attached to a heating system by inserting it between opposed fluid connection elements. One of the fluid connection elements is movable to permit the heat exchanger to be installed and removed easily by inserting one end of the heat exchanger in one of the fluid connection units and moving the other fluid connection unit into contact with an opposite end of the heat exchanges. The heating fluid is heated by an electric heating element and is circulated by an electric pump.

Description

[0001]This application is a continuation of application No. 08 / 758,853 filed Dec. 2, 1996, since abandoned, which is a continuation of application No. 08 / 571,706 filed Dec. 6, 1995, since abandoned, which is a continuation of application No. 08 / 145,099 filed Nov. 3, 1993, since abandoned, which is a continuation of application No. 07 / 979,434 filed Nov. 20, 1992, since abandoned, which is a continuation of application No. 07 / 558,177 filed Jul. 26, 1990, since abandoned, which is a reissue of application No. 06 / 866,910 filed May 27, 1986, U.S. Pat. No. 4,759,749.FIELD OF THE INVENTION[0002]This invention relates to the art of devices used with physiological fluids. In particular, the invention is an apparatus for heating a physiological fluid before introduction into a patient.BACKGROUND ART[0003]In many medical procedures, it is necessary that fluids to be administered to a patient be heated. For example, whole blood and packed cells are stored in refrigerators at a temperature of ap...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61F7/12A61J1/16A61M5/14A61M5/168A61M5/44
CPCA61M5/44A61M2205/366
Inventor VERKAART, WESLEY H.
Owner SMITHS MEDICAL ASD INC