US4529398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preventing contamination of catheter and drainage receptacle
Assignee: Individual
•
Filing: 1982-07-12
•
Granted: 1985-07-16
•
Expires: 2002-07-12
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
2026-10-23 20:52
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/44; A61M; A61M1/00; A61M1/88; A61M1/882
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
201 words
A method of improved catheter care consisting of substantially decreasing the migration of unwanted infectious organisms into the lumen of a catheter connected to a drainage receptacle, which receptacle when the catheter is in use receives and stores a biological fluid, and wherein the method comprises: (1) introducing into the receptacle a dispensing device for dispensing a biocide, the dispensing device being located in a lower portion of the receptacle and comprising: (a) a body, structured and adapted for introduction and retention in the receptacle, the body formed of a polymer that maintains its physical and chemical integrity in the presence of biological fluid admitted into the receptacle; and (b) a biocide dispersed in the polymer that kills and retards the propagation of infectious organisms in a biological fluid present in the receptacle; and, (2) contacting the dispensing device with a pool of the biological fluid in the lower portion of the receptacle whereby the biocide is continuously dispensed from the device into the receptacle for killing and retarding the propagation of the organisms, thereby preventing the contamination of, and decreasing the migration of the organisms from the receptacle into the lumen of the catheter over a prolonged period of time.
Claim 2
Independent Claim
201 words
A method of improved catheter care consisting of substantially decreasing the migration of unwanted infectious organisms into the lumen of a catheter connected to a drainage receptacle, which receptacle when the catheter is in use receives and stores a biological fluid, and wherein the method comprises: (1) introducing into the receptacle a dispensing device for dispensing a biocide, the dispensing device being located in a lower portion of the receptacle and comprising: (a) a body, structured and adapted for introduction and retention in the receptacle, the body formed of a polymer that maintains its physical and chemical integrity in the presence of biological fluid admitted into the receptacle; and (b) a biocide dispersed in the polymer that kills and retards the propagation of infectious organisms in a biological fluid present in the receptacle; and, (2) contacting the dispensing device with a pool of the biological fluid in the lower portion of the receptacle whereby the biocide is continuously dispensed from the device into the receptacle for killing and retarding the propagation of the organisms, thereby preventing the contamination of, and decreasing the migration of the organisms from the receptacle into the lumen of the catheter over a prolonged period of time.
Claim 3
Dependent Claim
21 words
The method of improved catheter care according to claim 1 wherein the polymer is a matrix with the biocide housed therein.
Claim 4
Dependent Claim
25 words
The method of improved catheter care according to claim 1 wherein the dispensing device is a polymer container with the biocide housed in the container.
Claim 5
Dependent Claim
34 words
The method of improved catheter care according to claim 1 wherein the biocide is a member selected from the group consisting of a phenol, quaternary ammonium, cationic surfactant, chlorine, quinolines, quinaldinium, and lactone biocides.
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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) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |