US5336194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable apparatus
Assignee: Fresenius Hemocare GmbH
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Filing: 1993-07-27
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Granted: 1994-08-09
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Expires: 2013-07-27
Abstract
Abstract Implantable infusion apparatus comprising a chamber sealed by a septum and having an outlet aperture leading therefrom, to which a catheter tube is connected. A wire anchored in the chamber base projects into the catheter lumen, forming a ring slot whose diameter is smaller than the average size of a punched out particle. The wire thus serves as a particle retention means.
Inventors
- 👤 Hans-Dietrich Polaschegg
- 👤 Bernd Steinbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:03
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0208; A61M5/00; A61M5/14; A61M5/165; A61M2039/0211; A61M2039/0241
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
Implantable apparatus for dosed administration of liquid medicines in the human body, with a housing having at least one chamber for storing a liquid medicine defined by at least one wall, an inlet aperture in the housing sealed by a perfortable spectum and flow-connected to said chamber, and an outlet aperture in the housing connected to a catheter tube with a lumen and with particle retention means disposed in the area of the outlet aperture, wherein said particle retention means comprises a wire anchored in the chamber wall and projecting into said outlet aperture to form a ring slot in order to restrict the diameter of said outlet aperture.
Claim 2
Dependent Claim
109 words
Implantable apparatus for dosed administration of liquid medicines in the human body, with a housing having at least one chamber for storing a liquid medicine defined by at least one wall, an inlet aperture in the housing sealed by a perfortable spectum and flow-connected to said chamber, and an outlet aperture in the housing connected to a catheter tube with a lumen and with particle retention means disposed in the area of the outlet aperture, wherein said particle retention means comprises a wire anchored in the chamber wall and projecting into said outlet aperture to form a ring slot in order to restrict the diameter of said outlet aperture.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1 wherein the diameter of the ring is smaller than the average diameter of a particle.
Claim 4
Dependent Claim
110 words
Implantable apparatus for dosed administration of liquid medicines in the human body, with a housing having at least one chamber for storing a liquid medicine defined by at least one wall, an inlet aperture in the housing sealed by a perfortable spectum and flow connected to said chamber, and an outlet aperture in the housing connected to a catheter tube with a lumen and with particle retention means disposed in the area of the outlet aperture, wherein said particle retention means comprises a capillary anchored in the chamber wall and projecting into said outlet aperture to form a ring slot in order to restrict the diameter of said outlet aperture.
Claim 5
Dependent Claim
110 words
Implantable apparatus for dosed administration of liquid medicines in the human body, with a housing having at least one chamber for storing a liquid medicine defined by at least one wall, an inlet aperture in the housing sealed by a perfortable spectum and flow connected to said chamber, and an outlet aperture in the housing connected to a catheter tube with a lumen and with particle retention means disposed in the area of the outlet aperture, wherein said particle retention means comprises a capillary anchored in the chamber wall and projecting into said outlet aperture to form a ring slot in order to restrict the diameter of said outlet aperture.
Claim 6
Dependent Claim
21 words
Apparatus according to claim 3 wherein the diameter of the ring slot is smaller than the average diameter of a particle.
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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) | 1997-08-08 | 1998-02-07 | 1998-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-08 | 2002-02-07 | 2002-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-08 | 2006-02-07 | 2006-08-09 | $7700.00 | Window Closed / Lapsed |