Patent US5135531A successfully refreshed from Google Patents.
US5135531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guided atherectomy system
Assignee: Surgical Systems and Instruments Inc
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Filing: 1990-03-27
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Granted: 1992-08-04
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Expires: 2010-03-27
Abstract
Abstract An atherectomy system for coring, ingesting and removing an obstruction material from within a patient's vessel having a flexible guide wire defining a void for holding obstruction material during the atherectomy process and for accurately guiding a flexible catheter in the vessel. Coupling means at the proximal end of the flexible catheter for coupling it to drive means.
Inventors
- 👤 Samuel Shiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:45
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; A61B8/00; A61B8/12; F; F16; F16C; F16C1/00; F16C1/02; F16D; F16D7/00; F16D7/02; A61B2017/00535; A61B2017/00539; A61B2017/00681; A61B2017/00685; A61B2017/00831; A61B2017/0084; A61B2017/00845; A61B2017/22038; A61B2017/22051; A61B2017/22052; A61B17/320068; A61B2017/320084; A61B90/00; A61B90/36; A61B90/37; A61B2090/373; A61B2090/378; A61B2090/3782; A61B2090/3784; A61B90/39; A61B2090/3933; A61B2217/00; A61B2217/002; A61B2217/005; A61M; A61M25/00; A61M25/01; A61M25/09; F16C2316/00; F16C2316/10
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
87 words
An atherectomy system for removing an obstruction material from within a patient's vessel, comprising in combination: a flexible guide wire insertable into said vessel, said flexible guide wire defining a void for holding the obstruction material, a flexible catheter with a coring means at its distal end having a continuous passage for ingesting the cored obstruction material, said flexible catheter being guided by and slidableover said flexible guide wire, coupling means at a proximal end of said flexible catheter for connecting said flexible catheter to drive means.
Claim 2
Dependent Claim
87 words
An atherectomy system for removing an obstruction material from within a patient's vessel, comprising in combination: a flexible guide wire insertable into said vessel, said flexible guide wire defining a void for holding the obstruction material, a flexible catheter with a coring means at its distal end having a continuous passage for ingesting the cored obstruction material, said flexible catheter being guided by and slidableover said flexible guide wire, coupling means at a proximal end of said flexible catheter for connecting said flexible catheter to drive means.
Claim 3
Dependent Claim
14 words
An atherectomy system as in claim 1, said coring means being a tubular blade.
Claim 4
Dependent Claim
19 words
An atherectomy system as in claim 1, said coring means being a tubular blade having at least one tooth.
Claim 5
Dependent Claim
13 words
An atherectomy system as in claim 1, said coring means utilizing auxiliary energy.
Claim 6
Dependent Claim
25 words
An atherectomy system as in claim 1, said coring means being a tubular blade utilizing an auxiliary energy to assist in coring the obstruction material.
Claim 7
Dependent Claim
18 words
An atherectomy system as in claim 1, having a flexible sleeve in which said flexible catheter is disposed.
Claim 8
Dependent Claim
19 words
An atherectomy system as in claim 6, said flexible sleeve having a means for biasing it in said vessel.
Claim 9
Dependent Claim
23 words
An atherectomy system as in claim 7, said biasing means comprise an inflatable chamber formed at said distal end of said flexible sleeve.
Claim 10
Dependent Claim
25 words
An atherectomy system as in claim 7, said flexible sleeve having a tongue at its distal end for biasing said flexible sleeve in said vessel.
Claim 11
Dependent Claim
12 words
An atherectomy system as in claim 9, said tongue being selectively actuatable.
Claim 12
Dependent Claim
20 words
An atherectomy system as in claim 6, wherein fluid transmitting means to said vessel are connected to said flexible sleeve.
Claim 13
Dependent Claim
22 words
An atherectomy system as in claim 1, wherein suction is applied to pull the cored obstruction material proximally in said continuous passage.
Claim 14
Dependent Claim
18 words
An atherectomy system as in claim 12, wherein said suction is provided by a positive displacement pump means.
Claim 15
Dependent Claim
32 words
An atherectomy system as in claim 1, wherein a portion of said flexible guide-wire is inserted distally to said flexible catheter, into said vessel, concentrically aligns said flexible catheter with said vessel.
Claim 16
Dependent Claim
37 words
An atherectomy system as in claim 1, wherein a portion of said flexible guide-wire which extends distally from said flexible catheter into said vessel provides a lever arm which angularly aligns said flexible catheter with said vessel.
Claim 17
Dependent Claim
22 words
An atherectomy system as in claim 1, wherein at least a portion of said flexible guide wire is shaped as an auger.
Claim 18
Dependent Claim
34 words
An atherectomy system as in claim 16, said auger comprising a helical wire made of at least two layers, decreasing its cross section modulus around a neutral axis perpendicular to the auger's main axis.
Claim 19
Dependent Claim
34 words
An atherectomy system as in claim 1, wherein said flexible guide wire comprises a flexible pilot wire and a flexible casing slidable thereon, said flexible casing defines a void for holding the obstruction material.
Claim 20
Dependent Claim
20 words
An atherectomy system as in claim 18, said flexible pilot wire has an auxiliary energy pod at its distal portion.
Claim 21
Dependent Claim
27 words
An atherectomy system as in claim 19 wherein said auxiliary energy is emitted by said pilot wire to assist said helical wire in crossing the obstruction material.
Claim 22
Dependent Claim
14 words
An atherectomy system as in claim 18, said flexible pilot wire being a tube.
Claim 23
Dependent Claim
38 words
An atherectomy system as in claim 18, a portion of said flexible pilot wire is inserted distally to said flexible casing, into said vessel, and provides a lever arm to angularly align said flexible casing with said vessel.
Claim 24
Dependent Claim
19 words
An atherectomy system as in claim 18, at least a portion of said flexible casing being a helical wire.
Claim 25
Dependent Claim
18 words
An atherectomy system as in claim 23, said helical wire's distal end is closed with a thin gate.
Claim 26
Dependent Claim
22 words
An atherectomy system as in claim 24, said gate being a short tube attached to the distal end of said helical wire.
Claim 27
Dependent Claim
22 words
An atherectomy system as in claim 24, said gate being a tube section attached to the distal end of said helical wire.
Claim 28
Dependent Claim
18 words
An atherectomy system as in claim 23, wherein said helical wire emits auxiliary energy through its distal end.
Claim 29
Dependent Claim
32 words
An atherectomy system as in claim 23, said helical wire is made of a wire having a decreased cross section modulus around a neutral axis perpendicular to the helical wire's main axis.
Claim 30
Dependent Claim
34 words
An atherectomy system as in claim 28, said helical wire made of at least two layers, decreasing said helical wire's cross section modulus around a neutral axis perpendicular to the helical wire's main axis.
Claim 31
Dependent Claim
17 words
An atherectomy system as in claim 1, said flexible guide wire having a radially protruding barrier means.
Claim 32
Dependent Claim
15 words
An atherectomy system as in claim 30, wherein said barrier means can be selectively expanded.
Claim 33
Dependent Claim
24 words
An atherectomy system as in claim 1, said flexible guide wire having a pod at its distal portion for emitting and receiving auxiliary energy.
Claim 34
Dependent Claim
23 words
An atherectomy system as in claim 32, said distal end of said flexible guide wire having means to drill through the obstruction material.
Claim 35
Dependent Claim
14 words
An atherectomy system as in claim 33, wherein said drilling means comprise sharp protrusions.
Claim 36
Dependent Claim
14 words
An atherectomy system as in claim 33, wherein said drilling means utilize auxiliary energy.
Claim 37
Dependent Claim
22 words
An atherectomy system as in claim 1, having biasing means to deflect the trajectory of said flexible guide wire in said vessel.
Claim 38
Dependent Claim
25 words
An atherectomy system as in claim 36, said biasing means comprising a selectively inflatable asymmetrical chamber formed at said distal end of said flexible sleeve.
Claim 39
Dependent Claim
83 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, holding the obstruction material with the flexible guide wire, advancing over the flexible guide wire a coring means located at a distal end of a flexible catheter, advancing the coring means into the obstruction and coring the obstruction while the coring means is guided in and aligned with the vessel by the flexible guide wire.
Claim 40
Dependent Claim
83 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, holding the obstruction material with the flexible guide wire, advancing over the flexible guide wire a coring means located at a distal end of a flexible catheter, advancing the coring means into the obstruction and coring the obstruction while the coring means is guided in and aligned with the vessel by the flexible guide wire.
Claim 41
Dependent Claim
25 words
A process as in claim 38, wherein the insertion of the flexible guide wire into the vessel is assisted by signals generated by auxiliary energy.
Claim 42
Dependent Claim
24 words
A process as in claim 38, wherein a radio-opaque fluid is injected through the flexible guide wire to facilitate fluoroscopic imaging of the vessel.
Claim 43
Dependent Claim
23 words
A process as in claim 38, wherein suction is used to assist in proximally moving the cored obstruction material in the flexible catheter.
Claim 44
Dependent Claim
17 words
A process as in claim 41, wherein the suction is provided by a positive displacement pump means.
Claim 45
Dependent Claim
95 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 pilot wire, inserting into a vessel, into an obstruction, over the flexible pilot wire a flexible casing defining a void for holding the obstruction material, advancing over the flexible casing a coring means located at a distal end of a flexible catheter, advancing the coring means into the obstruction and coring the obstruction while the coring means is guided in and aligned with the vessel by the flexible casing.
Claim 46
Dependent Claim
95 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 pilot wire, inserting into a vessel, into an obstruction, over the flexible pilot wire a flexible casing defining a void for holding the obstruction material, advancing over the flexible casing a coring means located at a distal end of a flexible catheter, advancing the coring means into the obstruction and coring the obstruction while the coring means is guided in and aligned with the vessel by the flexible casing.
Claim 47
Dependent Claim
25 words
A process as in claim 43, wherein the insertion of the flexible pilot wire into the vessel is assisted by signals generated by auxiliary energy.
Claim 48
Dependent Claim
24 words
A process as in claim 43, wherein a radio-opaque fluid is injected through the flexible pilot wire to facilitate fluoroscopic imaging of the vessel.
Claim 49
Dependent Claim
23 words
A process as in claim 43, wherein suction is used to assist in proximally moving the cored obstruction material in the flexible catheter.
Claim 50
Dependent Claim
17 words
A process as in claim 46, wherein the suction is provided by a positive displacement pump means.
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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) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |