US4237091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature probe
Assignee: Terumo BCT Inc
•
Filing: 1978-06-21
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Granted: 1980-12-02
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Expires: 1998-06-21
Abstract
Abstract Making temperature measurements of blood inside a disposable, sterilized medical device by providing receptacles in the walls of the device for receiving temperature-sensitive probes, the receptacles including a tubular heat-conductive member, extending through a wall of the device and being sealed to the wall, and a cylindrical body having protuberances extending radially for cooperating with slots in a temperature-sensitive probe.
Inventors
- 👤 Donn D. Lobdell
- 👤 Stephen J. Herman
- 👤 Robert L. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:50
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/14; A; A61; A61M; A61M5/00; A61M5/44; A61M5/445; G01K13/00; G01K13/20; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7005; Y10T403/7007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
312 words
A disposable blood oxygenator, comprising: a venous blood inlet chamber comprised of a first plastic housing and a venous blood inlet connected thereto, bubble generating means for forming oxygen bubbles in the blood in said blood inlet chamber, a gas exchange column means extending upwardly above said blood inlet chamber for transporting said bubbles while gas is exchanged with the blood, heat exchange means downstream of said inlet chamber for exchanging heat between the blood and another fluid, defoaming means connected to and communicating with the outlet of said gas exchange means for breaking up bubbles, a blood reservoir chamber connected to and below said defoaming means for collecting oxygenated and heated blood, said reservoir chamber comprising a plastic housing, and blood temperature measuring means for monitoring the temperature of the blood in said inlet or reservoir chambers, each said means comprising, a tubular metallic heat-conductive member with one sealed end and one open end, said sealed end extending through a wall of said chamber, and the interior of said tubular member being adapted to receive an elongated temperature probe, said probe, being supported by a cylindrical member, and a molded plastic plug for supporting said tubular metallic member, said plug extending through and sealed to the plastic chamber wall, said tubular metallic member extending through and sealed to said plug, and said plug having means for retaining said probe in said heat-conductive member, said retaining means cooperating with said cylindrical member of said probe such that protuberances extending from said plug or said cylindrical member cooperate with helical slots on the other member, whereby blood temperature can be measured before or after its passage through said heat and gas exchange means by temperature probes that can be quickly twisted into sterile, secure, heat-sensing communication with the blood and quickly disengaged when the oxygenator has been used and is ready for disposal.
Claim 2
Dependent Claim
312 words
A disposable blood oxygenator, comprising: a venous blood inlet chamber comprised of a first plastic housing and a venous blood inlet connected thereto, bubble generating means for forming oxygen bubbles in the blood in said blood inlet chamber, a gas exchange column means extending upwardly above said blood inlet chamber for transporting said bubbles while gas is exchanged with the blood, heat exchange means downstream of said inlet chamber for exchanging heat between the blood and another fluid, defoaming means connected to and communicating with the outlet of said gas exchange means for breaking up bubbles, a blood reservoir chamber connected to and below said defoaming means for collecting oxygenated and heated blood, said reservoir chamber comprising a plastic housing, and blood temperature measuring means for monitoring the temperature of the blood in said inlet or reservoir chambers, each said means comprising, a tubular metallic heat-conductive member with one sealed end and one open end, said sealed end extending through a wall of said chamber, and the interior of said tubular member being adapted to receive an elongated temperature probe, said probe, being supported by a cylindrical member, and a molded plastic plug for supporting said tubular metallic member, said plug extending through and sealed to the plastic chamber wall, said tubular metallic member extending through and sealed to said plug, and said plug having means for retaining said probe in said heat-conductive member, said retaining means cooperating with said cylindrical member of said probe such that protuberances extending from said plug or said cylindrical member cooperate with helical slots on the other member, whereby blood temperature can be measured before or after its passage through said heat and gas exchange means by temperature probes that can be quickly twisted into sterile, secure, heat-sensing communication with the blood and quickly disengaged when the oxygenator has been used and is ready for disposal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |