US4894051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atherectomy system with a biasing sleeve and method of using the same
Assignee: Surgical Systems and Instruments Inc
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Filing: 1988-12-19
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Granted: 1990-01-16
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Expires: 2008-12-19
Abstract
Abstract An atherectomy system for removing an obstruction from within a patient's vessel, comprising a flexible guide-wire insertable into the vessel, a flexible catheter for coring and ingesting obstruction material, insertable into the vessel over the flexible guide-wire, the flexible catheter having a coring device at its distal end and coupling device for connecting it to a power source, at its proximal end, a sleeve in which the flexible catheter is slidably disposed, the sleeve having an elongated tongue extending from its distal end, the tongue defining inside the vessel an eccentrically biased trajectory for the coring device to move along.
Inventors
- 👤 Samuel Shiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:18
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/22; A61B17/22004; A61B17/22012; A61B17/320758; A61B17/320783; A61B18/00; A61B18/04; A61B18/08; A61B18/082; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/245; F; F16; F16C; F16C1/00; F16C1/02; F16D; F16D7/00; F16D7/02; A61B2017/22038; A61B2017/22051; A61B2017/22052; A61B2217/00; A61B2217/002; A61B2217/005; A61M; A61M1/00; A61M1/71; A61M1/74; A61M1/75; F16C2316/00; F16C2316/10
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
152 words
An atherectomy system for coring, ingesting and removing an obstruction from within a patient's vessel, comprising in combination: a flexible guide-wire insertable into the vessel, a flexible rotary catheter, rotably disposed and insertable into the vessel over said flexible guide-wire, having at its distal end a rotary coring means for making a circular cut in an obstruction located in front of it, and coupling means at its proximal end, a continuous passage, for ingesting the cored obstruction material, defined between said flexible rotary catheter and said flexible guide-wire, where the relative motion between said flexible rotary catheter and said flexible guide-wire assists in moving said ingested obstruction material proximally in said continuous passage, and, a sleeve in which said flexible catheter is slidably disposed, said sleeve having an elongated tongue extending from its distal end, said tongue defining inside said vessel an eccentrically biased trajectory for said coring means to move along.
Claim 2
Dependent Claim
152 words
An atherectomy system for coring, ingesting and removing an obstruction from within a patient's vessel, comprising in combination: a flexible guide-wire insertable into the vessel, a flexible rotary catheter, rotably disposed and insertable into the vessel over said flexible guide-wire, having at its distal end a rotary coring means for making a circular cut in an obstruction located in front of it, and coupling means at its proximal end, a continuous passage, for ingesting the cored obstruction material, defined between said flexible rotary catheter and said flexible guide-wire, where the relative motion between said flexible rotary catheter and said flexible guide-wire assists in moving said ingested obstruction material proximally in said continuous passage, and, a sleeve in which said flexible catheter is slidably disposed, said sleeve having an elongated tongue extending from its distal end, said tongue defining inside said vessel an eccentrically biased trajectory for said coring means to move along.
Claim 3
Dependent Claim
20 words
An atherectomy system as in claim 1, said tongue has a circular cross section which positively contains said flexible catheter.
Claim 4
Dependent Claim
15 words
An atherectomy system as in claim 1, said tongue has a U shaped cross section.
Claim 5
Dependent Claim
22 words
An atherectomy system as in claim 1, said tongue having a selectively variable cross section to facilitate insertion thereof into the vessel.
Claim 6
Dependent Claim
37 words
An atherectomy system as in claim 1, said tongue's cross section being selectively variable and adapted to unfold in response to inflation of a chamber means which is attached externally to a bottom side of said tongue.
Claim 7
Dependent Claim
16 words
An atherectomy system as in claim 1, said tongue's cross section is stabilized by reinforcing means.
Claim 8
Dependent Claim
23 words
An atherectomy system as in claim 1, said tongue having a selectively actuable biasing means for eccentrically biasing said tongue in the vessel.
Claim 9
Dependent Claim
21 words
An atherectomy system as in claim 7, said biasing means comprise an inflatable chamber attached in bottom side of said tongue.
Claim 10
Dependent Claim
16 words
An atherectomy system as in claim 1, said tongue has a gate at its distal end.
Claim 11
Dependent Claim
15 words
An atherectomy system as in claim 9, said gate is selectively acutable by mechanical means.
Claim 12
Dependent Claim
16 words
An atherectomy system as in claim 9, said gate is selectively acutable by inflatable chamber means.
Claim 13
Dependent Claim
30 words
An atherectomy system as in claim 1, wherein suction is applied at said proximal end of said continuous passage to pull the cored obstruction material proximally in said continuous passage.
Claim 14
Dependent Claim
14 words
An atherectomy system as in claim 1, said coring means being a rotating tubular-blade.
Claim 15
Dependent Claim
14 words
An atherectomy system as in claim 1, said flexible catheter being a flexible rotary-catheter.
Claim 16
Dependent Claim
37 words
An atherectomy system as in claim 14, said flexible rotary-catheter having a decreased diameter at its proximal section to reduce frictional losses between said flexible rotary-catheter and said sleeve at the area of entering the patient's body.
Claim 17
Dependent Claim
15 words
An atherectomy system as in claim 1, said coring means being a radiation emitting device.
Claim 18
Dependent Claim
23 words
An atherectomy system as in claim 1, said flexible guide-wire having radially extending distal barrier means to counter distal movement of obstruction material.
Claim 19
Dependent Claim
21 words
An atherectomy system as in claim 17, wherein said distal barrier means can elastically contract to pass through a narrowed lumen.
Claim 20
Dependent Claim
15 words
An atherectomy system as in claim 41, wherein said distal barrier means are selectively expandable.
Claim 21
Dependent Claim
20 words
An atherectomy system as in claim 1, wherein means for introducing fluids into the vessel are connected to said sleeve.
Claim 22
Dependent Claim
105 words
A proces for removing an obstruction from a vessel with an atherectomy system, comprising the following steps: inserting into a vessel, into an obstruction, a flexible guide-wire, advancing over the flexible guide-wire a flexible chamber equipped with coring means at its distal end and a sleeve having a tongue extending from its distal end, placing said tongue along the obstruction, advancing the coring means to the obstruction, advancing the flexible catheter and coring along an eccentrically biased trajectory defined by the tongue while coring and ingesting into the flexible catheter the obstruction material, removing the flexible catheter and ingested obstruction material out of the vessel.
Claim 23
Dependent Claim
105 words
A proces for removing an obstruction from a vessel with an atherectomy system, comprising the following steps: inserting into a vessel, into an obstruction, a flexible guide-wire, advancing over the flexible guide-wire a flexible chamber equipped with coring means at its distal end and a sleeve having a tongue extending from its distal end, placing said tongue along the obstruction, advancing the coring means to the obstruction, advancing the flexible catheter and coring along an eccentrically biased trajectory defined by the tongue while coring and ingesting into the flexible catheter the obstruction material, removing the flexible catheter and ingested obstruction material out of the vessel.
Claim 24
Dependent Claim
20 words
A process as in claim 21, wherein suction is used to enable the cored obstruction material into the continuous passage.
Claim 25
Dependent Claim
89 words
A process for removing an obstruction from a vessel with an atherectomy system, comprising the following steps: inserting into a vessel, into an obstruction, a flexible guide-wire, advancing over the flexible guide-wire a coring means and coring an initial lumen in the obstruction, retracting the coring means from said initial lumen, inserting a tongue into said initial lumen, advancing the flexible catheter and coring along an eccentrically biased trajectory defined by the tongue while coring and ingesting into the flexible catheter the obstruction material, to enlarge the initial lumen.
Claim 26
Dependent Claim
89 words
A process for removing an obstruction from a vessel with an atherectomy system, comprising the following steps: inserting into a vessel, into an obstruction, a flexible guide-wire, advancing over the flexible guide-wire a coring means and coring an initial lumen in the obstruction, retracting the coring means from said initial lumen, inserting a tongue into said initial lumen, advancing the flexible catheter and coring along an eccentrically biased trajectory defined by the tongue while coring and ingesting into the flexible catheter the obstruction material, to enlarge the initial lumen.
Claim 27
Dependent Claim
20 words
A process as in claim 23, wherein suction is used to enable the cored obstruction material into the continuous passage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |