US4464258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container housing biocidal dispensing device
Assignee: Alza Corp
•
Filing: 1983-01-03
•
Granted: 1984-08-07
•
Expires: 2003-01-03
Abstract
Abstract A patient-care system is disclosed comprising a container housing a device that delivers an agent for controlling the presence of pathogens. Also, the device and a method are disclosed using the device for preventing pathogenic infections.
Inventors
- 👤 Patrick S. Wong
- 👤 Jimmy B. Langston
- 👤 Harold M. Leeper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:56
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/44; A61F5/441; A61M; A61M1/00; A61M1/88; A61M1/882
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A collection system for controlling pathogens in fluids, comprising in combination: a container for receiving and storing a fluid; an inlet port in the container for admitting a fluid into the container; a dispensing device in the container for substantially controlling the presence of pathogens in fluid admitted into the container; the dispensing device comprising a body shaped and sized for placement in the container, which body is formed of a polymeric material containing therein a biocidally effective amount of a methenamine of the general formula: ##STR1## said body having at least one polymeric surface exposed to the container for dispensing the methenamine from the device in a biocidally effective amount into fluid in the container that contacts the surface of the device for substantially controlling the presence of pathogens in fluid received into container.
Claim 2
Dependent Claim
135 words
A collection system for controlling pathogens in fluids, comprising in combination: a container for receiving and storing a fluid; an inlet port in the container for admitting a fluid into the container; a dispensing device in the container for substantially controlling the presence of pathogens in fluid admitted into the container; the dispensing device comprising a body shaped and sized for placement in the container, which body is formed of a polymeric material containing therein a biocidally effective amount of a methenamine of the general formula: ##STR1## said body having at least one polymeric surface exposed to the container for dispensing the methenamine from the device in a biocidally effective amount into fluid in the container that contacts the surface of the device for substantially controlling the presence of pathogens in fluid received into container.
Claim 3
Dependent Claim
36 words
The collection system for controlling pathogens in fluids, comprising in combination the container and the device according to claim 1, wherein the device comprises an internal space in the polymeric body with the methenamine housed therein.
Claim 4
Dependent Claim
34 words
The collection system for controlling pathogens in fluids, comprising in combination the container and the device according to claim 1, wherein the methenamine in the polymeric body is present as the acid addition salt.
Claim 5
Dependent Claim
38 words
The collection system for controlling pathogens in fluids, comprising in combination the container and the dispensing device according to claim 1, wherein the polymeric material also contains an acid that generates an acidic environment within the polymeric material.
Claim 6
Dependent Claim
49 words
The collection system for controlling pathogens in fluids, comprising in combination the container and the device according to claim 1 wherein the biocide is a member selected from the group consisting essentially of methenamine mandelate, methenamine camphorate, methenamine iodoformine, methenamine salicylate, methenamine sulfosalicylate, methenamine hydrochloride, and methenamine anhydromethylene citrate.
References Cited (Backward Citations)
US3228829A
Cited
US3772193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |