Patent US4241733A successfully refreshed from Google Patents.
US4241733A
Expired / Lapsed
US
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Patient-care apparatus with device for dispensing anti-pathogenic agent
Assignee: Alza Corp
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Filing: 1979-09-24
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Granted: 1980-12-30
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Expires: 1999-09-24
Abstract
Abstract A patient-care apparatus housing a device for controlling the presence of pathogens is disclosed. The apparatus comprises a container with an inlet port and a device in the apparatus for controlling the presence of pathogens.
Inventors
- 👤 Jimmy B. Langston
- 👤 Harold Leeper
- 👤 Patrick S. Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:03
CPC Classifications
A; A61; A61M; A61M25/00; A01; A01N; A01N35/00; A01N35/02; A61F; A61F5/00; A61F5/44; A61F5/441; A61L; A61L2/00; A61L2/16; A61L2/18; A61L2/20; A61L2/204; A61M1/00; A61M1/88; A61M1/882
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
102 words
A patient-care apparatus, comprising in combination: a container for receiving and storing a biological fluid; an inlet port in the container for establishing fluid passage between the interior and the exterior of the container; and a device in the container for substantially controlling the presence of pathogens in the apparatus, said device consisting of a body sized and adapted for prolonged placement in the container and having a surface exposed to the container, the body formed of a polymeric material containing paraformaldehyde, which is converted to formaldehyde when the apparatus is in use and released by the surface for controlling said pathogens.
Claim 2
Dependent Claim
102 words
A patient-care apparatus, comprising in combination: a container for receiving and storing a biological fluid; an inlet port in the container for establishing fluid passage between the interior and the exterior of the container; and a device in the container for substantially controlling the presence of pathogens in the apparatus, said device consisting of a body sized and adapted for prolonged placement in the container and having a surface exposed to the container, the body formed of a polymeric material containing paraformaldehyde, which is converted to formaldehyde when the apparatus is in use and released by the surface for controlling said pathogens.
Claim 3
Dependent Claim
44 words
The patient-care apparatus according to claim 1, wherein paraformaldehyde is a polymer selected from the group of polymers of the general formula consisting of (CH 2 O) n wherein n is 3 and HO(CH 2 O) m H wherein m is 3 to 125.
Claim 4
Dependent Claim
45 words
The patient-care apparatus according to claim 1, wherein the paraformaldehyde is converted to formaldehyde in the polymeric material in the presence of fluid that enters the material, and which formaldehyde is released by the device for substantially controlling the presence of pathogens in the container.
Claim 5
Dependent Claim
36 words
The patient-care apparatus according to claim 1, wherein the paraformaldehyde is dispensed by the device and converted to formaldehyde in the presence of moisture in the container for controlling the presence of pathogens in the container.
References Cited (Backward Citations)
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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) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |