US5871436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation therapy method and device
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 1996-07-19
•
Granted: 1999-02-16
•
Expires: 2016-07-19
Abstract
Abstract An implantable medical device is used to deliver a dosage of radiation to a localized site within a patient. The device is coated with a chelator selected for its bonding affinity with a specific radioisotope. A base layer and optionally a spacer layer is first applied to the device to provide a proper foundation for the chelator. Just prior to implantation, the device is immersed in a solution of the radioisotope which enables a preselected amount of such radioisotope to be adsorbed.
Inventors
- 👤 Robert P. Eury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:06
CPC Classifications
A; A61; A61K; A61K51/00; A61K51/12; A61K51/1282; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2210/00; A61F2210/0095; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N2005/1019
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
68 words
A method for delivering a preselected dosage of radiation to a site within a patient, comprising the steps of: providing an implantable component having preselected sections thereof coated with a chelator, said chelator being selected to have a bonding affinity for a preselected radioisotope; providing said radioisotope in solution; immersing said implantable component in said solution; and immediately after said immersion step, implanting said component in said patient.
Claim 2
Independent Claim
68 words
A method for delivering a preselected dosage of radiation to a site within a patient, comprising the steps of: providing an implantable component having preselected sections thereof coated with a chelator, said chelator being selected to have a bonding affinity for a preselected radioisotope; providing said radioisotope in solution; immersing said implantable component in said solution; and immediately after said immersion step, implanting said component in said patient.
Claim 3
Dependent Claim
21 words
The method of claim 1, further comprising the steps of disinfecting and storing said implantable component prior to said immersion step.
Claim 4
Dependent Claim
13 words
The method of claim 2, wherein said implantable component comprises an expandable stent.
Claim 5
Dependent Claim
74 words
An intravascular medical device for providing radiation treatment, comprising: an implantable component; a chelating coating attached to a preselected surface of said component, said chelating coating being selected to have a binding affinity for a preselected radioisotope; a base layer attached to said preselected surface of said component and disposed below said chelating coating; and a spacer layer bonded to said base layer and disposed below said chelating coating and above said base layer.
Claim 6
Dependent Claim
74 words
An intravascular medical device for providing radiation treatment, comprising: an implantable component; a chelating coating attached to a preselected surface of said component, said chelating coating being selected to have a binding affinity for a preselected radioisotope; a base layer attached to said preselected surface of said component and disposed below said chelating coating; and a spacer layer bonded to said base layer and disposed below said chelating coating and above said base layer.
Claim 7
Dependent Claim
18 words
The medical device of claim 4, wherein said base layer comprises gold and said spacer layer comprises α,ω
References Cited (Backward Citations)
US4763671A
Cited
US4697575A
Cited
US4815449A
Cited
US4706652A
Cited
US4994560A
Cited
US4861520A
Cited
US4969863A
Cited
US5263963A
Cited
US5180368A
Cited
US5034001A
Cited
US5002560A
Cited
US5320824A
Cited
US5059166A
Cited
US5176617A
Cited
US5199939B1
Cited
US5199939A
Cited
US5213561A
Cited
US5354257A
Cited
US5484384A
Cited
US5300281A
Cited
US5133956A
Cited
WO1993004735A1
Cited
US5302168A
Cited
US5411466A
Cited
US5688486A
Cited
WO1994025106A1
Cited
US5456667A
Cited
EP0633041A1
Cited
US5498227A
Cited
WO1995019807A1
Cited
US5503613A
Cited
US5503614A
Cited
EP0688580A1
Cited
WO1996010436A1
Cited
US5730698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-02-15 | 2002-08-17 | 2003-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-02-15 | 2006-08-17 | 2007-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-02-15 | 2010-08-17 | 2011-02-16 | $7700.00 | Window Closed / Lapsed |