Patent US5944733A successfully refreshed from Google Patents.
US5944733A
Expired / Lapsed
US
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Controlled detachable vasoocclusive member using mechanical junction and friction-enhancing member
Assignee: Target Therapeutics Inc
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Filing: 1997-07-14
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Granted: 1999-08-31
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Expires: 2017-07-14
Abstract
Abstract A vasoocclusive member, such as embolic coil, that mechanically joins an instrument for delivering that vasoocclusive member to a selected site within the vasculature or other lumen of a human body via the use of a catheter is provided. A thermoplastic member augments the junction to enhance variously the friction at an integrity of the junction. Once the vasoocclusive member is delivered to the desired site, radio frequency energy is supplied to the thermoplastic member in an amount sufficient to soften the thermoplastic member, allowing mechanical disengagement to then take place.
Inventors
- 👤 Erik T. Engelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:39
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12131; A61B17/1214; A61B17/12145; A61B2017/1205; A61B2017/12054; A61B2017/12068
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
135 words
A combination pusher-vasoocclusive member assembly for use in occluding a selected vascular site within a vessel comprising: (a) a vasoocclusive member with opposing ends having, on at least one end, a detachable vasoocclusive member junction engageable to a pusher junction; (b) a pusher comprising an elongated member having a proximal end and a distal end, the distal end forming a pusher junction engageable to the detachable vasoocclusive member junction; (c) a source of radio frequency energy attachable to the pusher; and (d) a thermoplastic member adhering to both the vasoocclusive member junction and the pusher junction to aid in preventing disengagement of both the detachable vasoocclusive member junction and the pusher junction until the application of radio frequency energy in an amount sufficient to soften the thermoplastic member and to allow disengagement to take place.
Claim 2
Dependent Claim
135 words
A combination pusher-vasoocclusive member assembly for use in occluding a selected vascular site within a vessel comprising: (a) a vasoocclusive member with opposing ends having, on at least one end, a detachable vasoocclusive member junction engageable to a pusher junction; (b) a pusher comprising an elongated member having a proximal end and a distal end, the distal end forming a pusher junction engageable to the detachable vasoocclusive member junction; (c) a source of radio frequency energy attachable to the pusher; and (d) a thermoplastic member adhering to both the vasoocclusive member junction and the pusher junction to aid in preventing disengagement of both the detachable vasoocclusive member junction and the pusher junction until the application of radio frequency energy in an amount sufficient to soften the thermoplastic member and to allow disengagement to take place.
Claim 3
Dependent Claim
19 words
The combination of claim 1 wherein the thermoplastic member additionally encapsulates the vasoocclusive member junction and the pusher junction.
Claim 4
Dependent Claim
15 words
The combination of claim 1 wherein the proximal end of the pusher is electrically insulated.
Claim 5
Dependent Claim
12 words
The combination of claim 1 where the vasoocclusive member is a coil.
Claim 6
Dependent Claim
10 words
The combination of claim 4 where the coil is helical.
Claim 7
Dependent Claim
14 words
The combination of claim 4 where the coil has a random or straight configuration.
Claim 8
Dependent Claim
108 words
A combination conducting core wire-vasoocclusive member assembly for use in occluding a selected vascular site within a vessel comprising: (a) a vasoocclusive member with opposing ends having an axially central lumen therethrough; (b) a conducting core wire having a proximal end and a distal end for receiving radio frequency energy; (c) a source of radio frequency energy attachable to the pusher; and (d) a thermoplastic member adhering to both the vasoocclusive member and the conducting core wire to aid in preventing disengagement of both the vasoocclusive member and the conducting core wire until the application of radio frequency energy in an amount sufficient to soften the thermoplastic member.
Claim 9
Dependent Claim
108 words
A combination conducting core wire-vasoocclusive member assembly for use in occluding a selected vascular site within a vessel comprising: (a) a vasoocclusive member with opposing ends having an axially central lumen therethrough; (b) a conducting core wire having a proximal end and a distal end for receiving radio frequency energy; (c) a source of radio frequency energy attachable to the pusher; and (d) a thermoplastic member adhering to both the vasoocclusive member and the conducting core wire to aid in preventing disengagement of both the vasoocclusive member and the conducting core wire until the application of radio frequency energy in an amount sufficient to soften the thermoplastic member.
Claim 10
Dependent Claim
19 words
The combination of claim 7 where the thermoplastic member additionally encapsulates the vasoocclusive member and the conducting core wire.
Claim 11
Dependent Claim
17 words
The combination of claim 7 where the proximal end of the conducting core wire is electrically insulated.
Claim 12
Dependent Claim
12 words
The combination of claim 7 where the vasoocclusive member is a coil.
Claim 13
Dependent Claim
10 words
The combination of claim 10 where the coil is helical.
Claim 14
Dependent Claim
14 words
The combination of claim 10 where the coil has a random or straight configuration.
Claim 15
Dependent Claim
114 words
A process for the placement of a vasoocclusive member at a selected site comprising the steps of: (a) introducing to a selected site, a vasoocclusive member having, on at least one end, a detachable vasoocclusive member junction engaged with a pusher junction, a thermoplastic member adhering to both the detachable vasoocclusive member junction and the pusher junction to aid in preventing their disengagement; (b) applying radio frequency energy to both the detachable vasoocclusive member junction and the pusher junction in an amount sufficient to substantially soften the thermoplastic member and aid the release of the vasoocclusive member into the selected site; and (c) moving the pusher junction out of engagement with the vasoocclusive member.
Claim 16
Dependent Claim
114 words
A process for the placement of a vasoocclusive member at a selected site comprising the steps of: (a) introducing to a selected site, a vasoocclusive member having, on at least one end, a detachable vasoocclusive member junction engaged with a pusher junction, a thermoplastic member adhering to both the detachable vasoocclusive member junction and the pusher junction to aid in preventing their disengagement; (b) applying radio frequency energy to both the detachable vasoocclusive member junction and the pusher junction in an amount sufficient to substantially soften the thermoplastic member and aid the release of the vasoocclusive member into the selected site; and (c) moving the pusher junction out of engagement with the vasoocclusive member.
Claim 17
Dependent Claim
12 words
The process of claim 13 where the vasoocclusive member is a coil.
Claim 18
Dependent Claim
10 words
The process of claim 14 where the coil is helical.
Claim 19
Dependent Claim
14 words
The process of claim 14 where the coil has a random or straight configuration.
Claim 20
Dependent Claim
116 words
A process for the placement of a vasoocclusive member at a selected site comprising the steps of: (a) attaching a thermoplastic member to the distal end of a conducting core wire; (b) joining the distal end of the conducting core wire to a vasoocclusive member to form a combination conducting core wire-vasoocclusive member assembly; (c) introducing to a selected site the combination conducting core wire-vasoocclusive member assembly; (d) applying radio frequency energy to the combination conducting core wire-vasoocclusive member assembly in an amount sufficient to substantially soften the thermoplastic member and aid the release of the vasoocclusive member into the selected site; and (e) moving the conducting core wire out of engagement with the vasoocclusive member.
Claim 21
Dependent Claim
116 words
A process for the placement of a vasoocclusive member at a selected site comprising the steps of: (a) attaching a thermoplastic member to the distal end of a conducting core wire; (b) joining the distal end of the conducting core wire to a vasoocclusive member to form a combination conducting core wire-vasoocclusive member assembly; (c) introducing to a selected site the combination conducting core wire-vasoocclusive member assembly; (d) applying radio frequency energy to the combination conducting core wire-vasoocclusive member assembly in an amount sufficient to substantially soften the thermoplastic member and aid the release of the vasoocclusive member into the selected site; and (e) moving the conducting core wire out of engagement with the vasoocclusive member.
Claim 22
Dependent Claim
27 words
The process of claim 17 where the conducting core wire is attached to the vasoocclusive member prior to attaching the thermoplastic member to the conducting core wire.
Claim 23
Dependent Claim
12 words
The process of claim 17 where the vasoocclusive member is a coil.
Claim 24
Dependent Claim
10 words
The process of claim 19 where the coil is helical.
Claim 25
Dependent Claim
14 words
The process of claim 19 where the coil has a random or straight configuration.
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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) | 2002-08-30 | 2003-03-01 | 2003-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-30 | 2007-03-01 | 2007-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-30 | 2011-03-01 | 2011-08-31 | $7700.00 | Window Closed / Lapsed |