Patent EP0359447A2 successfully refreshed from Google Patents.
EP0359447A2
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EP
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Improved atherectomy catheter
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1989-09-01
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Granted: —
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Expires: 2009-09-01
Abstract
Abstract An atherectomy device includes a transparent lumen or sheath for providing inflation medium to an inflatable balloon. In one embodiment, a dual lumen flexible tube includes an opaque flexible torque member (90) in a first lumen (89), while the second lumen (92) serves as an inflation lumen. The distal end of the inflation lumen (92) is expanded to define the balloon (102), and no seals are needed between the balloon and the inflation lumen. A vent tube (108) is provided for bleeding air from the balloon as it is inflated with incompressible medium.
Inventors
- 👤 Hanson S. Gifford, Iii
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 18:24
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320783; A61B17/22; A61B2017/22038; A61B2017/22072; A61B2017/22074; A61B2017/22075
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
92 words
An atherectomy device comprising: a substantially transparent flexible tube having at least two lumens extending from a proximal end to a distal end; a flexible torque member disposed within a first of the lumens, said torque member being opaque and having an open interior; and a housing disposed within the distal end of the first lumen and joined to the flexible torque member, said housing including means for severing atheroma; wherein a second of the lumens is formed into an inflatable balloon at the distal end of the tube adjacent the housing.
Claim 2
Dependent Claim
92 words
An atherectomy device comprising: a substantially transparent flexible tube having at least two lumens extending from a proximal end to a distal end; a flexible torque member disposed within a first of the lumens, said torque member being opaque and having an open interior; and a housing disposed within the distal end of the first lumen and joined to the flexible torque member, said housing including means for severing atheroma; wherein a second of the lumens is formed into an inflatable balloon at the distal end of the tube adjacent the housing.
Claim 3
Dependent Claim
19 words
An atherectomy device as in claim 1, wherein the first lumen is shrunk tightly about the flexible torque member.
Claim 4
Dependent Claim
26 words
An atherectomy device as in claim 1, wherein the flexible torque member is a braided tube having a diameter from about 1 mm to 4 mm.
Claim 5
Dependent Claim
50 words
An atherectomy device as in claim 1, wherein said housing includes an axially elongated aperture and said severing means comprises a rotatable blade mounted within the housing and a flexible cable attached to the blade, said cable being capable of rotating and axially translating the blade past the elongated aperture.
Claim 6
Dependent Claim
22 words
An atherectomy device as in claim 4, wherein the inflatable balloon is disposed on the side of the housing opposite the aperture.
Claim 7
Dependent Claim
52 words
An atherectomy device as in claim 1, further including a flexible vent tube disposed through a distal end of the second lumen and extending into the interior of the inflatable balloon, whereby air within the balloon and the second lumen may be bled during inflation of the balloon with an incompressible fluid.
Claim 8
Dependent Claim
23 words
An atherectomy device as in claim 1, wherein the flexible tube includes at least a third lumen capable of receiving a steerable guidewire.
Claim 9
Dependent Claim
100 words
An atherectomy device comprising: a flexible tube having a central lumen extending from a proximal end to a distal end; a flexible torque member disposed within said central lumen; a housing joined to the torque member at its distal end, said housing including means for severing atheroma on one side thereof; an inflatable balloon attached to the housing on a side opposite from the severing means; and a substantially transparent sheath disposed over the flexible tube and defining an annular lumen from the proximal to distal ends, said annular lumen being fluidly connected to the balloon to allow inflation thereof.
Claim 10
Dependent Claim
100 words
An atherectomy device comprising: a flexible tube having a central lumen extending from a proximal end to a distal end; a flexible torque member disposed within said central lumen; a housing joined to the torque member at its distal end, said housing including means for severing atheroma on one side thereof; an inflatable balloon attached to the housing on a side opposite from the severing means; and a substantially transparent sheath disposed over the flexible tube and defining an annular lumen from the proximal to distal ends, said annular lumen being fluidly connected to the balloon to allow inflation thereof.
Claim 11
Dependent Claim
29 words
An atherectomy device as in claim 8, wherein the flexible tube is a flexible plastic tube having a diameter in the range from about 1 mm to 4 mm.
Claim 12
Dependent Claim
29 words
An atherectomy device as in claim 8, wherein the flexible torque member is a braided tube having a diameter in the range from about 0.4 mm to 1.5 mm.
Claim 13
Dependent Claim
50 words
An atherectomy device as in claim 8, wherein said housing includes an axially elongated aperture and said severing means comprises a rotatable blade mounted within the housing and a flexible cable attached to the blade, said cable being capable of rotating and axially translating the blade past the elongated aperture.
Claim 14
Dependent Claim
22 words
An atherectomy device as in claim 11, wherein the inflatable balloon is disposed on the side of the housing opposite the aperture.
Claim 15
Dependent Claim
25 words
An atherectomy device as in claim 8, further including a connector tube fluidly connecting the annular lumen formed by the sheath to the inflatable balloon.
Claim 16
Dependent Claim
52 words
an atherectomy device as in claim 8, further including: a vent tube removably inserted into the interior of the inflatable balloon through one end thereof; and a resilient strap disposed about said one end of the balloon, whereby said strap closes the opening left when the vent is removed from the balloon.
Claim 17
Dependent Claim
97 words
A vascular catheter comprising: a flexible tube having at least one lumen extending from a proximal end to a distal end, said lumen being formed into an inflatable balloon located at the distal end of the flexible tube; means for inflating the balloon with an incompressible fluid from the proximal end of the flexible tube; and a flexible vent tube disposed through a distal end of the lumen and extending into the interior of the inflatable balloon, whereby air within the balloon and inflation means may be bled during inflation of the balloon with an incompressible fluid.
Claim 18
Dependent Claim
97 words
A vascular catheter comprising: a flexible tube having at least one lumen extending from a proximal end to a distal end, said lumen being formed into an inflatable balloon located at the distal end of the flexible tube; means for inflating the balloon with an incompressible fluid from the proximal end of the flexible tube; and a flexible vent tube disposed through a distal end of the lumen and extending into the interior of the inflatable balloon, whereby air within the balloon and inflation means may be bled during inflation of the balloon with an incompressible fluid.
Claim 19
Dependent Claim
22 words
A vascular catheter as in claim 15, wherein the distal end of the balloon has been heat sealed about the vent tube.
Claim 20
Dependent Claim
25 words
A vascular catheter as in claim 15, wherein the vent tube has been bonded in the distal end of the balloon with a flexible adhesive.
Claim 21
Dependent Claim
14 words
A vascular catheter as in claim 15, wherein the vent tube is fused silica.
Claim 22
Dependent Claim
26 words
A vascular catheter as in claim 15, wherein the inner diameter of the vent tube is in the range from about 0.01 mm to 0.05 mm.
Claim 23
Dependent Claim
69 words
A vascular catheter comprising: a flexible tube having a proximal end and a distal end; an inflatable balloon disposed at the distal end of the tube; a vent tube removably inserted into the interior of the inflatable balloon through one end thereof; and a resilient strap disposed about said one end of the balloon, whereby said strap closes the opening left when the vent is removed from the balloon.
Claim 24
Dependent Claim
69 words
A vascular catheter comprising: a flexible tube having a proximal end and a distal end; an inflatable balloon disposed at the distal end of the tube; a vent tube removably inserted into the interior of the inflatable balloon through one end thereof; and a resilient strap disposed about said one end of the balloon, whereby said strap closes the opening left when the vent is removed from the balloon.
Claim 25
Dependent Claim
14 words
A vascular catheter as in claim 20, wherein the vent tube is stainless steel.
Claim 26
Dependent Claim
26 words
A vascular catheter as in claim 20, wherein the inner diameter of the vent tube is in the range from about 0.05 mm to 0.3 mm.
Claim 27
Dependent Claim
35 words
A vascular catheter as in claim 20, further comprising a resilient strap disposed about said one end of the balloon, whereby said strap closes the opening left when the vent is removed from the balloon.
References Cited (Backward Citations)
No citation records indexed.
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