Patent US5306249A successfully refreshed from Google Patents.
US5306249A
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Method of treating body passage walls
Assignee: DON MICHAEL INTERNATIONAL LLC
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Filing: 1992-04-19
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Granted: 1994-04-26
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Expires: 2012-04-19
Abstract
Abstract A method for performing a therapeutic treatment on a section of a wall of a body passage, by: isolating a portion of the body passage which encloses the section from the remainder of the body passage; introducing into the isolated portion of the body passage a liquid medium containing a treatment agent; maintaining the treatment agent in the isolated portion for a predetermined time period; during the step of maintaining, periodically withdrawing a sample of the liquid medium from the isolated portion of the body passage, analyzing the sample to determine the proportion of treatment agent present in the liquid medium in the isolated portion and modifying the liquid medium in the isolated portion to establish a desired proportion of the treatment agent in the liquid medium in the isolated portion.
Inventors
- 👤 T. Anthony Don Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:30
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1011; A61M25/01; A61M25/0105; A61M25/0133; A61M25/0155; A61B; A61B17/00; A61B17/22; A61B2017/22082; A61B2017/22084; A61M25/0043; A61M2025/0057; A61M2025/1043; A61M2025/1052; A61M2025/1061; A61M2025/1095; A61M2025/1097; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/0032; A61M25/0067; A61M25/0068; A61M25/007
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
137 words
A method for performing a therapeutic treatment on a section of a wall of a body passage, comprising: isolating a portion of the body passage which encloses the section from the remainder of the body passage; introducing into the isolated portion of the body passage a liquid medium containing a treatment agent; maintaining the treatment agent in the isolated portion for a predetermined time period; during said step of maintaining, periodically withdrawing a sample of the liquid medium from the isolated portion of the body passage, analyzing the sample to determine the proportion of treatment agent present in the liquid medium in the isolated portion and modifying the liquid medium in the isolated portion on the basis of the analysis to establish a desired proportion of the treatment agent in the liquid medium in the isolated portion.
Claim 2
Independent Claim
137 words
A method for performing a therapeutic treatment on a section of a wall of a body passage, comprising: isolating a portion of the body passage which encloses the section from the remainder of the body passage; introducing into the isolated portion of the body passage a liquid medium containing a treatment agent; maintaining the treatment agent in the isolated portion for a predetermined time period; during said step of maintaining, periodically withdrawing a sample of the liquid medium from the isolated portion of the body passage, analyzing the sample to determine the proportion of treatment agent present in the liquid medium in the isolated portion and modifying the liquid medium in the isolated portion on the basis of the analysis to establish a desired proportion of the treatment agent in the liquid medium in the isolated portion.
Claim 3
Dependent Claim
15 words
A method as defined in claim 1 wherein the body passage is a blood vessel.
Claim 4
Dependent Claim
13 words
A method as defined in claim 2 wherein the liquid medium comprises blood.
Claim 5
Dependent Claim
15 words
A method as defined in claim 3 wherein the treatment agent comprises genetically altered cells.
Claim 6
Dependent Claim
27 words
A method as defined in claim 3 wherein said step of modifying comprises adding a quantity of treatment agent determined by the result of said analyzing step.
Claim 7
Dependent Claim
15 words
A method as defined in claim 2 wherein the predetermined time period is 30-60 minutes.
Claim 8
Dependent Claim
15 words
A method as defined in claim 1 wherein the liquid medium comprises a saline solution.
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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) | 1997-04-25 | 1997-10-25 | 1998-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-25 | 2001-10-25 | 2002-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-25 | 2005-10-25 | 2006-04-26 | $7700.00 | Window Closed / Lapsed |