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US5569462A Expired / Lapsed US ⏱️ 0.0 years remaining

Methods for enhancing vascularization of implant devices

Assignee: Baxter International Inc
•
Filing: 1995-03-31
•
Granted: 1996-10-29
•
Expires: 2015-03-31
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Abstract

Abstract Methods for enhancing vascular support of cells housed within an implanted apparatus are disclosed. The methods comprise placing a population of therapeutic substance-producing cells into the cell receiving chamber of an immunoisolation apparatus, implanting the apparatus into a patient, and administering an immunomodulatory agent to the patient. The immunomodulatory agent increases the number of close vascular structures in the vicinity of the implanted device, which increases the long term survival of the cell population housed therein.

Inventors

  • 👤 Laura A. Martinson
  • 👤 James H. Brauker
  • 👤 Robert C. Johnson
  • 👤 Thomas Loudovaris

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 19:04
CPC Classifications
A; A61; A61K; A61K38/00; A61K38/04; A61K38/12; A61K38/13; A61L; A61L27/00; A61L27/36; A61L27/38; A61P; A61P37/00; A61P37/02; A61P37/06; B; B65; B65D; B65D5/00; B65D5/42; B65D5/4212; Y; Y10; Y10S; Y10S623/00; Y10S623/915

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 85 words
A method for implanting cells in a patient, comprising the steps of: (a) providing a population of viable cells; (b) implanting into said patient an immunoisolation apparatus having structure defining a cell receiving chamber therein, said immunoisolation apparatus comprising an immunoisolation zone that immunoisolates said cell receiving chamber; (c) placing said population into said cell receiving chamber of said immunoisolation apparatus; and (d) administering an immunomodulatory agent to said patient in an amount and for a time effective to enhance vascularization of said implanted apparatus.
Claim 2
Independent Claim 85 words
A method for implanting cells in a patient, comprising the steps of: (a) providing a population of viable cells; (b) implanting into said patient an immunoisolation apparatus having structure defining a cell receiving chamber therein, said immunoisolation apparatus comprising an immunoisolation zone that immunoisolates said cell receiving chamber; (c) placing said population into said cell receiving chamber of said immunoisolation apparatus; and (d) administering an immunomodulatory agent to said patient in an amount and for a time effective to enhance vascularization of said implanted apparatus.
Claim 3
Dependent Claim 25 words
The method of claim 1, wherein said cell population is placed in said cell receiving chamber after said immunoisolation apparatus is implanted in said patient.
Claim 4
Dependent Claim 18 words
The method of claim 1 wherein said population of viable cells is capable of producing a therapeutic substance.
Claim 5
Dependent Claim 15 words
The method of claim 1, wherein said cell population comprises at least one xenogeneic cell.
Claim 6
Dependent Claim 15 words
The method of claim 1, wherein said cell population comprises at least one allogeneic cell.
Claim 7
Dependent Claim 15 words
The method of claim 1, wherein said cell population comprises at least one isogeneic cell.
Claim 8
Dependent Claim 34 words
The method of claim 3, wherein said cell population comprises at least one cell carrying an extrinsic nucleic acid construct conferring upon said at least one cell the capability of producing said therapeutic substance.
Claim 9
Dependent Claim 13 words
The method of claim 1, wherein said immunomodulatory agent is an antiinflammatory agent.
Claim 10
Dependent Claim 13 words
The method of claim 1, wherein said immunomodulatory agent is an immunosuppressive agent.
Claim 11
Dependent Claim 12 words
The method of claim 1, wherein said immunomodulatory agent is cyclosporine A.
Claim 12
Dependent Claim 18 words
The method of claim 1, said immunoisolation apparatus further comprising means for effecting close vascularization of said apparatus.
Claim 13
Dependent Claim 16 words
The method of claim 11, wherein said means for effecting close vascularization comprises a vascularization zone.
Claim 14
Dependent Claim 20 words
The method of claim 12, wherein said immunoisolation zone is interposed between said vascularizing zone and said cell receiving chamber.
Claim 15
Dependent Claim 35 words
The method of claim 11, wherein said means for effecting close vascularization comprises at least one vascularization cell housed within said cell receiving chamber, said vascularization cell producing an effective amount of a vascularizing substance.

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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) 1999-10-29 2000-04-29 2000-10-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2003-10-29 2004-04-29 2004-10-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2007-10-29 2008-04-29 2008-10-29 $7700.00 Window Closed / Lapsed

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