US6395326B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for depositing a coating onto a surface of a prosthesis
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 2000-05-31
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Granted: 2002-05-28
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Expires: 2020-05-31
Abstract
Abstract A patterned coating on a prosthesis, for example a stent, and a method for forming the coating are disclosed. Additionally, an apparatus for forming the patterned coating is disclosed.
Inventors
- 👤 Daniel Castro
- 👤 Steven Wu
- 👤 Kevin L. Woolbright
- 👤 Kurt W. Scheinpflug
- 👤 Syed F. A. Hossainy
- 👤 Li Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:15
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/14; A61L31/16; A61L31/08; A61L31/10; B; B05; B05D; B05D1/00; B05D1/26; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2250/00; A61F2250/0058; A61F2250/0067; A61F2250/0068; A61L2300/00; A61L2300/60; A61L2300/606; B05D1/002; B05D1/40; B05D3/00; B05D3/10; B05D3/107
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
108 words
A method of forming a coating on a stent, comprising: (a) positioning a nozzle in close proximity to or in contact with a stent, the stent having a scaffolding network including gaped regions; and (b) moving the nozzle from a first position to a second position while maintaining the nozzle in close proximity to or in contact with the scaffolding network to deposit a coating material on at least a portion of the scaffolding network, wherein the nozzle is moved along the pattern of the scaffolding network between the first position and the second position to avoid any significant application of the coating material in the gaped regions.
Claim 2
Independent Claim
108 words
A method of forming a coating on a stent, comprising: (a) positioning a nozzle in close proximity to or in contact with a stent, the stent having a scaffolding network including gaped regions; and (b) moving the nozzle from a first position to a second position while maintaining the nozzle in close proximity to or in contact with the scaffolding network to deposit a coating material on at least a portion of the scaffolding network, wherein the nozzle is moved along the pattern of the scaffolding network between the first position and the second position to avoid any significant application of the coating material in the gaped regions.
Claim 3
Dependent Claim
15 words
The method of claim 1 , wherein the stent is maintained in a stationary position.
Claim 4
Dependent Claim
30 words
The method of claim 1 , wherein the stent is moved in concert with the nozzle for maintaining the positioning of the nozzle along the pattern of the scaffolding network.
Claim 5
Dependent Claim
22 words
The method of claim 1 , where the coating material is selected from a group of polymers, therapeutic agents, or mixtures thereof.
Claim 6
Dependent Claim
60 words
The method of claim 1 , additionally including applying heat to the coating material for solidifying the coating material on the stent, wherein the heat is applied to and concentrated on the region where the coating material has been applied to the scaffolding network so as to avoid application of the heat to the other areas of the scaffolding network.
Claim 7
Dependent Claim
19 words
The method of claim 1 , wherein the movement of the nozzle is controlled by a central processing unit.
Claim 8
Dependent Claim
44 words
The method of claim 1 , wherein the movement of the nozzle is controlled by a central processing unit and a feedback system for providing information about the pattern of the scaffolding network or the positioning of the nozzle to the central processing unit.
Claim 9
Dependent Claim
27 words
The method of claim 1 , wherein the pattern from the first position to the second position is a non-linear path along which the nozzle is moved.
Claim 10
Dependent Claim
25 words
The method of claim 1 , wherein the nozzle is at an angle of less than 90 degrees to the surface of the scaffolding network.
Claim 11
Dependent Claim
49 words
The method of claim 1 , additionally including adjusting the flow rate of the coating material out from the nozzle and the speed of the nozzle from the first position to the second position so as to prevent any significant overflow of the coating material off the scaffolding network.
Claim 12
Dependent Claim
20 words
The method of claim 1 , wherein the nozzle is capable of moving in intervals of less than 0.1 inches.
Claim 13
Dependent Claim
20 words
The method of claim 1 , wherein the nozzle is capable of moving in intervals of less than 0.001 inches.
Claim 14
Independent Claim
108 words
A method of forming a coating on a stent, comprising: (a) positioning a nozzle in close proximity to or in contact with a stent, the stent having a scaffolding network including gaped regions; and (b) moving the stent from a first position to a second position while maintaining the scaffolding network in close proximity to or in contact with the nozzle to deposit a coating material on at least a portion of the scaffolding network, wherein the nozzle is maintained along the pattern of the scaffolding network between the first position and the second position to avoid any significant application of the coating material in the gaped regions.
Claim 15
Independent Claim
108 words
A method of forming a coating on a stent, comprising: (a) positioning a nozzle in close proximity to or in contact with a stent, the stent having a scaffolding network including gaped regions; and (b) moving the stent from a first position to a second position while maintaining the scaffolding network in close proximity to or in contact with the nozzle to deposit a coating material on at least a portion of the scaffolding network, wherein the nozzle is maintained along the pattern of the scaffolding network between the first position and the second position to avoid any significant application of the coating material in the gaped regions.
Claim 16
Dependent Claim
15 words
The method of claim 13 , wherein the nozzle is held in a stationary position.
Claim 17
Dependent Claim
19 words
The method of claim 13 , wherein the nozzle is capable of rotating about the circumference of the stent.
Claim 18
Dependent Claim
32 words
The method of claim 13 , wherein the nozzle is capable of moving in concert with the stent for maintaining the positioning of the nozzle along the pattern of the scaffolding network.
Claim 19
Dependent Claim
23 words
The method of claim 13 , where the coating material is selected from a group of polymers, therapeutic agents, or a mixture thereof.
Claim 20
Dependent Claim
60 words
The method of claim 13 , additionally including applying heat to the coating material for solidifying the coating material on the stent, wherein the heat is applied to and concentrated on the region where the coating material has been applied to the scaffolding network so as to avoid application of the heat to the other areas of the scaffolding network.
Claim 21
Dependent Claim
19 words
The method of claim 13 , wherein the movement of the stent is controlled by a central processing unit.
Claim 22
Dependent Claim
44 words
The method of claim 13 , wherein the movement of the stent is controlled by a central processing unit and a feedback system for providing information about the pattern of the scaffolding network or the positioning of the nozzle to the central processing unit.
Claim 23
Dependent Claim
21 words
The method of claim 13 , wherein the pattern from the first position to the second position is a non-linear path.
Claim 24
Dependent Claim
25 words
The method of claim 13 , wherein the nozzle is at an angle of less than 90 degrees to the surface of the scaffolding network.
Claim 25
Dependent Claim
52 words
The method of claim 13 , additionally including adjusting the flow rate of the coating material out from the nozzle and the speed of the movement of the stent from the first position to the second position so as to prevent any significant overflow of the coating material off the scaffolding network.
Claim 26
Dependent Claim
21 words
The method of claim 13 , wherein the stent is capable of being moved in intervals of less than 0.1 inches.
Claim 27
Dependent Claim
21 words
The method of claim 13 , wherein the stent is capable of being moved in intervals of less than 0.001 inches.
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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) | 2005-05-27 | 2005-11-26 | 2006-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-05-27 | 2009-11-26 | 2010-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-05-27 | 2013-11-26 | 2014-05-28 | $7700.00 | Window Closed / Lapsed |