EP0254414A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A rotary catheter for removing an obstruction froma blood vessel
Assignee: SHIBER, SAMUEL
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Filing: 1987-06-15
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Granted: —
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Expires: 2007-06-15
Abstract
Abstract A rotary catheter insertable into a blood vessel (11) for remotely cutting and removing an obstructions (13) therein comprising a flexible tube (14) rotatable around and slidable along a flexible guide wire (12). A tubular blade (17) is mounted at the front end of the tube (14), the blade (17) defining a through-hole (17ʹ) which forms with the flexible tube (14) a continuous passage through which obstruction material can pass into the flexible tube (14). Means (20, 21) are provided at the other end of the tube to rotate the blade (17).
Inventors
- 👤 Samuel Shiber
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:36
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; A61B90/00; A61B90/08; A61B2090/0801; A61B2090/08021; F16C2316/00; F16C2316/10
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
92 words
A rotary catheter insertable into a patient's blood vessel for remotely cutting and removing an obstruction therein, comprising in combination: a flexible tube with front and rear ends and insertable into the blood vessel, a tubular blade mounted to the front end of said tube, said tubular blade defining a through-hole forming with said flexible tube a continuous passage for passing obstruction material which is ingested into said hole, into said flexible tube, and means connected to said rear end of said tube for rotating said flexible tube and said tubular blade.
Claim 2
Dependent Claim
92 words
A rotary catheter insertable into a patient's blood vessel for remotely cutting and removing an obstruction therein, comprising in combination: a flexible tube with front and rear ends and insertable into the blood vessel, a tubular blade mounted to the front end of said tube, said tubular blade defining a through-hole forming with said flexible tube a continuous passage for passing obstruction material which is ingested into said hole, into said flexible tube, and means connected to said rear end of said tube for rotating said flexible tube and said tubular blade.
Claim 3
Dependent Claim
27 words
A rotary catheter as in claim 1 wherein suction means are connected to the rear end of said flexible tube for removing obstruction material in said tube.
Claim 4
Dependent Claim
31 words
A rotary catheter as in claim 1, having a flexible guide wire insertable into a patient's blood vessel, said flexible tube being rotatably disposed and slidable over said flexible guide wire.
Claim 5
Dependent Claim
27 words
A rotary catheter as in claim 3 wherein suction means are connected to the rear end of said flexible tube for removing obstruction material in said tube.
Claim 6
Dependent Claim
30 words
A rotary catheter as in claim 3 wherein at least a portion of said guide wire which is in the vicinity of said tubular blade is shaped as an auger.
Claim 7
Dependent Claim
28 words
A rotary catheter as in claim 1 having an outer sleeve with a front opening and a rear opening, said flexible tube being rotatably disposed in said sleeve.
Claim 8
Dependent Claim
32 words
A rotary catheter as in claim 3 wherein said flexible tube has a higher torgue carrying capacity in the vicinity of said rear end than in the vicinity of said front end.
Claim 9
Dependent Claim
34 words
A rotary catheter as in claim 5 wherein a small longitudinal ridge is formed on at least a portion of an inner wall of said flexible tube in the vicinity of said first end.
Claim 10
Dependent Claim
17 words
A rotary catheter as in claim 6 wherein said sleeve is longitudinally slidable over said flexible tube.
Claim 11
Dependent Claim
16 words
A rotary catheter as in claim 1 wherein said tubular blade has at least one tooth.
Claim 12
Dependent Claim
18 words
A rotary catheter as in claim 10 wherein said tooth has a sharp face and a dull back.
Claim 13
Dependent Claim
23 words
A rotary catheter as in claim 10 wherein a face of said tooth is inclined inward to feed obstruction material into said through-hole.
Claim 14
Dependent Claim
25 words
A rotary catheter as in claim 10 wherein a face of said tooth is inclined backwards to allow obstruction material to slide off said tooth.
Claim 15
Dependent Claim
21 words
A rotary catheter as in claim 1 wherein said tubular blade is formed as an integral part of said flexible tube.
Claim 16
Dependent Claim
14 words
A rotary catheter as in claim 1 having means for heating said tubular blade.
Claim 17
Dependent Claim
16 words
A rotary catheter as in claim 10 wherein suction means are connected to said flexible tube.
Claim 18
Dependent Claim
27 words
A rotary catheter as in claim 5 having a sleeve with a front opening and a rear opening, said flexible tube being rotatably disposed in said sleeve.
Claim 19
Dependent Claim
14 words
A rotary catheter as in claim 17 wherein said sleeve is being remotely bendable.
Claim 20
Dependent Claim
18 words
A rotary catheter as in claim 6 wherein said sleeve is pre-bent to serve as a guiding catheter.
Claim 21
Dependent Claim
28 words
A rotary catheter as in claim 6 wherein said front opening is smaller in diameter than said tubular blade to ease penetration of said catheter into said vessel.
Claim 22
Dependent Claim
20 words
A rotary catheter as in claim 6 wherein means for introducing fluids into the vessel are connected to said sleeve.
Claim 23
Dependent Claim
20 words
A rotary catheter as in claim 1 wherein said flexible tube has a torgue carrying spiral member in its wall.
Claim 24
Dependent Claim
24 words
A rotary catheter as in claim 22 having a hoop member around said spiral member for restraining the diametrical expansion of said spiral member.
Claim 25
Dependent Claim
79 words
A process for removing an obstruction from a blood vessel, comprising the following steps: inserting into a vessel, to an obstruction, a flexible tube with a tubular blade attached to its front end and a guide wire, rotating and advancing said flexible tube and tubular blade over said guide wire, thereby peripherally cutting said obstruction and ingesting its material into said flexible tube, and removing said guide wire and flexible tube containing said obstruction material out of said vessel.
Claim 26
Dependent Claim
79 words
A process for removing an obstruction from a blood vessel, comprising the following steps: inserting into a vessel, to an obstruction, a flexible tube with a tubular blade attached to its front end and a guide wire, rotating and advancing said flexible tube and tubular blade over said guide wire, thereby peripherally cutting said obstruction and ingesting its material into said flexible tube, and removing said guide wire and flexible tube containing said obstruction material out of said vessel.
Claim 27
Dependent Claim
14 words
A process as in claim 24 wherein suction is maintained in said flexible tube.
Claim 28
Dependent Claim
32 words
A process as in claim 24 wherein a sleeve is disposed in the vessel and said flexible tube is rotated in said sleeve with its front end extending out of said sleeve.
Claim 29
Dependent Claim
20 words
A process as in claim 26 wherein fluid is delivered to the vicinity of the tubular blade through said sleeve.
Claim 30
Dependent Claim
110 words
A process for removing an obstruction from a blood vessel, comprising the following steps: inserting into a vessel a sleeve to the obstruction site, inserting through said sleeve a flexible guide wire into the obstruction, inserting over said flexible guide wire a flexible tube with a tubular blade attached to its front end, to the obstruction site, rotating said flexible tube and tubular blade around said flexible guide wire while advancing said flexible tube and tubular blade into the obstruction, thereby peripherally cutting said obstruction and ingesting its material into said flexible tube, and removing said flexible guide wire and flexible tube containing said obstruction material out of said artery.
Claim 31
Dependent Claim
110 words
A process for removing an obstruction from a blood vessel, comprising the following steps: inserting into a vessel a sleeve to the obstruction site, inserting through said sleeve a flexible guide wire into the obstruction, inserting over said flexible guide wire a flexible tube with a tubular blade attached to its front end, to the obstruction site, rotating said flexible tube and tubular blade around said flexible guide wire while advancing said flexible tube and tubular blade into the obstruction, thereby peripherally cutting said obstruction and ingesting its material into said flexible tube, and removing said flexible guide wire and flexible tube containing said obstruction material out of said artery.
Claim 32
Dependent Claim
14 words
A process as in claim 28 wherein suction is maintained in said flexible tube.
Claim 33
Dependent Claim
16 words
A process as in claim 28 wherein fluid is delivered into the vessel through said sleeve.
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