US5345933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable medical device with a protected medication layer
Assignee: Pacesetter AB
•
Filing: 1992-09-14
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Granted: 1994-09-13
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Expires: 2012-09-14
Abstract
Abstract An implantable medical device has surfaces that are in communication with the tissue of the patient after an implantation. At least one part of these surfaces is provided with at least one layer composed of a medication. In order to simply and reliably control the administration of a desired quantity of the medication, the medication layer is covered by at least one layer composed of an ion exchanger material.
Inventors
- 👤 Lars-Olof Peterson
- 👤 Ulf Lindegren
- 👤 Brigitte Stroetmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:21
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0019; A61K9/0024; A61F; A61F2/00; A61F2/0077; A61L; A61L27/00; A61L27/50; A61L27/54; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61F2250/00; A61F2250/0058; A61F2250/0067; A61L2300/00; A61L2300/60; A61L2300/602; A61L2300/606; A61L2300/608
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
63 words
An implantable medical device having ion exchange properties, said device having surfaces which are in communication with the tissue of a patient after implantation of said device, at least a part of these surfaces being covered by a layer composed of a medication, and said layer composed of a medication being covered by at least one layer composed of an ion exchanger material.
Claim 2
Dependent Claim
63 words
An implantable medical device having ion exchange properties, said device having surfaces which are in communication with the tissue of a patient after implantation of said device, at least a part of these surfaces being covered by a layer composed of a medication, and said layer composed of a medication being covered by at least one layer composed of an ion exchanger material.
Claim 3
Dependent Claim
21 words
An implantable medical device as claimed in claim 1 wherein said device is a heart simulation device or a part thereof.
Claim 4
Dependent Claim
17 words
An implantable medical device as claimed in claim 1 wherein said device is a heart stimulation electrode.
Claim 5
Dependent Claim
45 words
An implantable medical device as claimed in claim 3 wherein said heart stimulation electrode is a heart pacemaker electrode having at least one stimulation surface, said stimulation surface being covered by said at least one medication layer and said at least ion exchanger material layer.
Claim 6
Dependent Claim
18 words
An implantable medical device as claimed in claim 4 wherein said stimulation surface consist of a microporous material.
Claim 7
Dependent Claim
27 words
An implantable medical device as claimed in claim 4 wherein said stimulation surface of said heart pacemaker electrode has a maximum area of 4 mm 2 .
Claim 8
Dependent Claim
16 words
An implantable medical device as claimed in claim 1 wherein said device is an infusion pump.
Claim 9
Dependent Claim
33 words
An implantable medical device as claimed in claim 1 comprising a plurality of said layers of medication and a plurality of said layers of ion exchanger material, disposed in alternation above one another.
Claim 10
Dependent Claim
26 words
An implantable medical device as claimed in claim 1 wherein said layer of medication has a thickness in a range between 0.5 μm and 4 μm.
Claim 11
Dependent Claim
21 words
An implantable medical device as claimed in claim 9 wherein said layer of medication has a thickness of approximately 2 μm.
Claim 12
Dependent Claim
28 words
An implantable medical device as claimed in claim 1 wherein said layer of ion exchanger material has a thickness in a range between 0.5 μm and 4 μm.
Claim 13
Dependent Claim
23 words
An implantable medical device as claimed in claim 1 wherein said layer of ion exchanger material has a thickness of approximately 2 μm.
Claim 14
Dependent Claim
30 words
An implantable medical device as claimed in claim 1 wherein each of said layer of medication and said layer of ion exchanger material have respective thicknesses which are independently variable.
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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) | 1997-09-12 | 1998-03-14 | 1998-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-12 | 2002-03-14 | 2002-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-12 | 2006-03-14 | 2006-09-13 | $7700.00 | Window Closed / Lapsed |