US6616680B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distal protection and delivery system and method
Assignee: Individual
•
Filing: 2000-11-01
•
Granted: 2003-09-09
•
Expires: 2020-11-01
Abstract
Abstract A distal protection and delivery system is used to collect and remove embolic debris in the blood vessel. The system includes a guidewire, a filter assembly, and a distal introducer. The distal introducer can be positioned on a distal end of an introducer catheter or an angioplasty catheter or other interventional catheter. The guidewire has a small ferrule or locking mechanism fixed to it that does not affect the flexibility, torqueability, or trackability in comparison to standard guidewires. The introducer containing the filter assembly is advanced over the guidewire to a site distal to the lesion. Upon retraction of the guidewire proximally, the ferrule latches with an ejector latch of the filter assembly. Either advancement of the guidewire distally or retraction of the distal introducer proximally allows the filter assembly to be ejected from the distal introducer and into the blood vessel.
Inventors
- 👤 Joseph M. Thielen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/013; A61F2002/015; A61F2002/018; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2220/00; A61F2220/0025; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0008; A61F2230/0063; A61F2230/0073; A61F2230/008
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
139 words
A delivery system for delivering a distal protection filter assembly into the vasculature by an introducer for filtering embolic debris in flowing blood, the distal protection filter assembly being capable of extending from a smaller nondeployed state to a larger deployed state, said delivery system comprising; A. a guidewire having a locking means, B. an introducer that holds the distal protection filter assembly in the smaller nondeployed state, C. a stop means having the distal protection assembly attached thereto and preventing the passage of said locking means therethrough, D. an ejector means interacting with the distal protection filter assembly and providing for relative movement between the distal protection filter assembly and said introducer to eject the distal protection filter assembly from said introducer and into the vasculature allowing expansion of the distal protection filter to a larger deployed state.
Claim 2
Dependent Claim
139 words
A delivery system for delivering a distal protection filter assembly into the vasculature by an introducer for filtering embolic debris in flowing blood, the distal protection filter assembly being capable of extending from a smaller nondeployed state to a larger deployed state, said delivery system comprising; A. a guidewire having a locking means, B. an introducer that holds the distal protection filter assembly in the smaller nondeployed state, C. a stop means having the distal protection assembly attached thereto and preventing the passage of said locking means therethrough, D. an ejector means interacting with the distal protection filter assembly and providing for relative movement between the distal protection filter assembly and said introducer to eject the distal protection filter assembly from said introducer and into the vasculature allowing expansion of the distal protection filter to a larger deployed state.
Claim 3
Dependent Claim
24 words
The delivery system of claim 1 wherein said ejector means is an ejector latch that latches the distal protection filter assembly to said guidewire.
Claim 4
Dependent Claim
21 words
The delivery system of claim 2 wherein said ejector latch remains latched following introduction of said filter assembly into the vasculature.
Claim 5
Dependent Claim
23 words
The delivery system of claim 2 wherein said ejector latch has means to unlatch following introduction of said filter assembly into the vasculature.
Claim 6
Dependent Claim
25 words
The delivery system of claim 1 wherein said ejector means is an ejector tube that pushes the distal protection filter assembly out of said introducer.
Claim 7
Dependent Claim
28 words
The delivery system of claim 1 wherein said introducer comprises a stepped region having a dimension that is less than the dimension of the distal protection filter assembly.
Claim 8
Dependent Claim
19 words
The delivery system of claim 1 wherein said introducer is attached to the distal end of an interventional catheter.
Claim 9
Dependent Claim
23 words
The delivery system of claim 1 wherein said introducer is attached to the distal end of a guidewire tubing of an interventional catheter.
Claim 10
Dependent Claim
23 words
The delivery system of claim 1 wherein said introducer is attached to the distal end of a guidewire tubing on a dilatation catheter.
Claim 11
Dependent Claim
14 words
The delivery system of claim 9 wherein the dilatation catheter is an over-the-wire catheter.
Claim 12
Dependent Claim
15 words
The delivery system of claim 9 wherein the dilatation catheter is a rapid exchange catheter.
Claim 13
Dependent Claim
13 words
The delivery system of claim 1 wherein said introducer is an over-the-wire catheter.
Claim 14
Dependent Claim
14 words
The delivery system of claim 1 wherein said introducer is a rapid exchange catheter.
Claim 15
Dependent Claim
13 words
The delivery system of claim 1 wherein said guidewire is expandable in length.
Claim 16
Dependent Claim
13 words
The delivery system of claim 1 wherein said locking means comprises a ferrule.
Claim 17
Dependent Claim
38 words
The delivery system of claim 1 wherein said stop means is a narrowed region having the distal protection filter assembly attached thereto, said narrowed region having a minor dimension less than a major dimension of said locking means.
Claim 18
Dependent Claim
177 words
A delivery system for deploying and retrieving a distal protection filter assembly out of and back into an introducer from an initial smaller undeployed state to a larger deployed state and then to a smaller removable state into and out of the vasculature for filtering embolic debris out of blood that is flowing through the vasculature and removing the embolic debris captured by the distal protection filter assembly along with the distal protection filter assembly, said delivery system comprising; A. a guidewire having a latchable means near its distal end, said latchable means having a major dimension that is greater than the guidewire dimension, B. a stop means having a distal protection filter assembly attached thereto, said stop means having a minor dimension that is less than said guidewire latchable means major dimension, C. an ejector means for ejecting the distal protection filter assembly from the introducer, said ejector means having a radial dimension that is greater than the trunk diameter of said guidewire and less than the major radial dimension of the distal protection filter assembly.
Claim 19
Dependent Claim
177 words
A delivery system for deploying and retrieving a distal protection filter assembly out of and back into an introducer from an initial smaller undeployed state to a larger deployed state and then to a smaller removable state into and out of the vasculature for filtering embolic debris out of blood that is flowing through the vasculature and removing the embolic debris captured by the distal protection filter assembly along with the distal protection filter assembly, said delivery system comprising; A. a guidewire having a latchable means near its distal end, said latchable means having a major dimension that is greater than the guidewire dimension, B. a stop means having a distal protection filter assembly attached thereto, said stop means having a minor dimension that is less than said guidewire latchable means major dimension, C. an ejector means for ejecting the distal protection filter assembly from the introducer, said ejector means having a radial dimension that is greater than the trunk diameter of said guidewire and less than the major radial dimension of the distal protection filter assembly.
Claim 20
Independent Claim
117 words
A method of use for a delivery system for introduction of a distal protection filter assembly into the vasculature for filtering embolic debris in flowing blood, the distal protection filter assembly expanding from a smaller nondeployed state to a larger deployed state, the method comprising; A. advancing a guidewire having a locking means percutaneously distal to the site of a vascular lesion, B. advancing an introducer containing the distal protection filter assembly over the guidewire to a site distal to the vascular lesion, C. advancing the distal protection filter assembly with respect to said introducer into the vasculature with an ejector means that interacts with the distal protection filter assembly, D. retracting said introducer from the vasculature.
Claim 21
Independent Claim
117 words
A method of use for a delivery system for introduction of a distal protection filter assembly into the vasculature for filtering embolic debris in flowing blood, the distal protection filter assembly expanding from a smaller nondeployed state to a larger deployed state, the method comprising; A. advancing a guidewire having a locking means percutaneously distal to the site of a vascular lesion, B. advancing an introducer containing the distal protection filter assembly over the guidewire to a site distal to the vascular lesion, C. advancing the distal protection filter assembly with respect to said introducer into the vasculature with an ejector means that interacts with the distal protection filter assembly, D. retracting said introducer from the vasculature.
Claim 22
Independent Claim
122 words
A method of use for a delivery system for removal of a distal protection filter assembly from the vasculature for removing embolic debris captured from flowing blood, the distal protection filter assembly contracting from a larger deployed state to a smaller nondeployed state, the method comprising; A. advancing an introducer over a guidewire having a locking means to the site of the distal protection filter assembly, B. retracting said guidewire and causing said locking means of said guidewire to interface with a stop means having the distal protection filter assembly being attached thereto, C. pulling at least a portion of the distal protection filter assembly into said introducer and removing said delivery system and the distal protection filter assembly from the vasculature.
Claim 23
Independent Claim
122 words
A method of use for a delivery system for removal of a distal protection filter assembly from the vasculature for removing embolic debris captured from flowing blood, the distal protection filter assembly contracting from a larger deployed state to a smaller nondeployed state, the method comprising; A. advancing an introducer over a guidewire having a locking means to the site of the distal protection filter assembly, B. retracting said guidewire and causing said locking means of said guidewire to interface with a stop means having the distal protection filter assembly being attached thereto, C. pulling at least a portion of the distal protection filter assembly into said introducer and removing said delivery system and the distal protection filter assembly from the vasculature.
Claim 24
Independent Claim
198 words
A method of use for a delivery system for introduction of a distal protection filter assembly into the vasculature for filtering embolic debris in flowing blood, and performing an interventional procedure, the method comprising; A. advancing a guidewire having a locking means percutaneously distal to the site of a vascular lesion, B. advancing an interventional catheter having an introducer attached that contains the distal protection filter assembly over said guidewire to a site distal to the vascular lesion, C. advancing the distal protection filter assembly with respect to said introducer into the vasculature with an ejector means that interacts with the distal protection filter assembly, D. retracting said interventional catheter to the site of the lesion and performing an interventional procedure, E. advancing said interventional catheter with introducer attached thereto over said guidewire to the site of the distal protection filter assembly, F. retracting said guidewire and causing said locking means of said guidewire to interface with a stop means having the distal protection filter assembly being attached thereto, G. pulling at least a portion of the distal protection filter assembly into said introducer and removing said delivery system and the distal protection filter assembly from the vasculature.
Claim 25
Independent Claim
198 words
A method of use for a delivery system for introduction of a distal protection filter assembly into the vasculature for filtering embolic debris in flowing blood, and performing an interventional procedure, the method comprising; A. advancing a guidewire having a locking means percutaneously distal to the site of a vascular lesion, B. advancing an interventional catheter having an introducer attached that contains the distal protection filter assembly over said guidewire to a site distal to the vascular lesion, C. advancing the distal protection filter assembly with respect to said introducer into the vasculature with an ejector means that interacts with the distal protection filter assembly, D. retracting said interventional catheter to the site of the lesion and performing an interventional procedure, E. advancing said interventional catheter with introducer attached thereto over said guidewire to the site of the distal protection filter assembly, F. retracting said guidewire and causing said locking means of said guidewire to interface with a stop means having the distal protection filter assembly being attached thereto, G. pulling at least a portion of the distal protection filter assembly into said introducer and removing said delivery system and the distal protection filter assembly from the vasculature.
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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) | 2006-09-08 | 2007-03-10 | 2007-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-09-08 | 2011-03-10 | 2011-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-09-08 | 2015-03-10 | 2015-09-09 | $7700.00 | Window Closed / Lapsed |