# US 5,701,887 A · Breathing circuit heating element retainer

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- Number: US 5,701,887 A
- Document ID: US5701887A
- Status: Granted
- Kind: A
- Application number: 08/618,277
- Filed: 1996-03-18
- Granted: 1997-12-30
- Earliest claimed: 1996-03-18
- Assignees: Baxter International Inc.
- Inventors: Andre M. Rustad; Paul O. Davison
- Web page: https://patentgrep.com/patent/US5701887A

## CPC

- A61M 16/1075: {by influencing the temperature (A61M16/1045 takes precedence)}
- A61M 16/1095: {in the connecting tubes}
- A61M 16/08: Bellows; Connecting tubes {(having means for taking samples G01N1/22); Water traps; Patient circuits}
- Y10S 128/911: Unilimb inhalation-exhalation breathing tubes
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

In a breathing circuit such as a ventilator circuit, a heating element is used to provide improved temperature characteristics of the inspired air or breathing gas. An heating element retainer is disclosed which is operative to provide a central location of the heating element within the breathing circuit lumen.

## Claims

### Claim 1

In a breathing circuit having a tube, said tube defining a lumen, said lumen having an interior surface and a convolute section, and a heating element wire interior to said interior surface; a heating element retainer comprising a body having a plurality of ports defined therein and adapted to be inserted and retained in said convolute section and support said heating element wire by means of said plurality of ports defined within said body, said ports being further adapted to grip said element and hold same in a substantially fixed relationship with said body, and radially extensive deformable members extensive from said body with said members including deformable supports; said supports being substantially conterminous with said interior surface.

### Claim 2 (depends on 1)

The invention according to claim 1 and said retainer being made of a thermo-plastic material.

### Claim 3 (depends on 1)

The invention according to claim 1 and said body having a diameter less than, wherein said convolute area has a maximum diameter, said maximum diameter.

### Claim 4 (depends on 3)

The invention according to claim 3 and said retainer adapted to hold a heating wire within said circuit and wherein said wire has a plurality of limbs, said retainer being further adapted to hold said plurality of limbs of said heating wire.

### Claim 5

A method for effecting support of a heating wire in a breathing circuit having a convolute section comprising the following steps:
(1) wherein a heating wire retainer having a plurality of ports and said ports are adapted to retain said wire, threading said wire through said ports;
(2) wherein said retainer comprises a body having radially extensive deformable members extensive from said body and is adapted to fit within said convolute section, emplacing said retainer in said convolute section;
(3) drawing said wire through said breathing circuit and, wherein said circuit has a distal end, said drawing of said wire continuing to said distal end.

### Claim 6 (depends on 1)

The invention according to claim 1 and said retainer further comprising a groove in said body extending radially outward from each port of said plurality of ports.

### Claim 7 (depends on 6)

The invention according to claim 6 and said retainer further comprising said ports having a larger dimension than said grooves.

### Claim 8 (depends on 1)

The invention according to claim 1 and said retainer further comprising said supports, in combination with said deformable members, having a substantially figure eight configuration.