Patent EP0368523A2 successfully refreshed from Google Patents.
EP0368523A2
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EP
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Balloon dilatation catheter with integral guidewire
Assignee: Medtronic Vascular Inc
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Filing: 1989-10-27
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Granted: —
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Expires: 2009-10-27
Abstract
Abstract A balloon dilatation catheter adapted for use in percutaneous transluminal coronary angioplasty has an integral guidewire (20). The balloon (34) and its supporting members (30, 38) are not attached to the guidewire at their distal ends. The supporting members are attached at their proximal ends to the guidewire. The guidewire has an increased freedom of rotational movement and the balloon and its supporting members do not adversely twist about the guidewire.
Inventors
- 👤 Richard J. Morrill
- 👤 C. Vaughan Seifert
- 👤 Lori K. Segar
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M2025/0004; A61M25/0067; A61M25/0074; A61M2025/0079; A61M2025/1043; A61M2025/1079; A61M2025/1093
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
129 words
A balloon dilatation catheter comprising: an elongate shaft having proximal and distal ends; an elongate tubular means defining two lumens, the tubular means being located at the distal end of the shaft and being attached to the shaft only at the proximal end of the tubular means, the shaft extending through one of the lumens in the tubular means, whereby limited rotational movement between the tubular means and the shaft may occur; a balloon carried by the tubular means, the balloon and the distal end of the tubular means being unattached to the shaft; the other of the lumens being in communication with the interior of the balloon; the shaft having inflation lumen means communicating with the inflation lumen in the tubular means for inflating and deflating the balloon.
Claim 2
Dependent Claim
129 words
A balloon dilatation catheter comprising: an elongate shaft having proximal and distal ends; an elongate tubular means defining two lumens, the tubular means being located at the distal end of the shaft and being attached to the shaft only at the proximal end of the tubular means, the shaft extending through one of the lumens in the tubular means, whereby limited rotational movement between the tubular means and the shaft may occur; a balloon carried by the tubular means, the balloon and the distal end of the tubular means being unattached to the shaft; the other of the lumens being in communication with the interior of the balloon; the shaft having inflation lumen means communicating with the inflation lumen in the tubular means for inflating and deflating the balloon.
Claim 3
Dependent Claim
16 words
A balloon dilatation catheter as defined in claim 1 wherein the shaft is formed from metal.
Claim 4
Dependent Claim
74 words
A catheter as defined in claims 1 or 2 wherein the shaft comprises: a proximal segment formed from an elongate flexible tube, an intermediate, relatively short, tube mounted to the distal end of the proximal segment and having an outer diameter smaller than that of the proximal segment, and a core wire attached to the distal end of the intermediate segment and extending distally therefrom, the core wire being tapered in a distal direction.
Claim 5
Dependent Claim
99 words
A catheter as defined in claim 3 wherein said tubular means comprises: an outer flexible plastic sleeve mounted on the distal portion of the shaft having a proximal end attached to the intermediate segment of the shaft; an inner sleeve disposed within the outer sleeve and enclosing a portion of the core wire, the proximal end of the inner sleeve being attached to the proximal portion of the core wire, said inner and outer sleeves being unattached to the shaft except at their proximal ends; the balloon being mounted to the distal ends of the inner and outer sleeves.
Claim 6
Dependent Claim
142 words
A catheter as defined in claim 3 wherein the tubular means comprises: an elongate flexible plastic tubular member having two lumens extending therethrough, one of the lumens receiving the core wire, the tubular member being attached, at its proximal end, to the proximal end of the core wire; the other lumen of the tubular plastic member being shorter and extending from the proximal end of the tubular plastic member to a location proximal of the distal end of the first lumen; the balloon being mounted at its proximal end to the plastic member at a location proximal of the outlet of the inflation lumen, the distal end of the balloon being mounted to the distal end of the plastic member about the first lumen; and means communicating the lumen in the intermediate shaft segment with the proximal end of the inflation lumen.
Claim 7
Dependent Claim
23 words
A catheter as defined in claim 5 wherein the tubular member is attached to the proximal end of the core wire by adhesive.
Claim 8
Dependent Claim
72 words
A catheter as defined in claim 5 wherein the means communicating the shaft lumen with the inflation lumen in the plastic member comprises an opening formed through the wall of the intermediate segment of the shaft and a sleeve enclosing the distal end of the intermediate segment and the proximal end of the two lumen plastic member for confining fluid flow between the opening and the inflation lumen of the plastic member.
Claim 9
Dependent Claim
28 words
A catheter as defined in claim 3 further comprising an elongate flexible helical coil mounted to the distal end of the shaft and extending distally of the balloon.
Claim 10
Dependent Claim
28 words
A catheter as defined in claim 1 further comprising an elongate flexible helical coil mounted to the distal end of the shaft and extending distally of the balloon.
Claim 11
Dependent Claim
28 words
A catheter as defined in claim 4 further comprising an elongate flexible helical coil mounted to the distal end of the shaft and extending distally of the balloon.
Claim 12
Dependent Claim
28 words
A catheter as defined in claim 5 further comprising an elongate flexible helical coil mounted to the distal end of the shaft and extending distally of the balloon.
Claim 13
Dependent Claim
9 words
A catheter as defined in claim 1 further comprising:
Claim 14
Dependent Claim
18 words
thrust means for resisting longitudinal collapse of the balloon and the elongate tubular means in a proximal direction.
Claim 15
Dependent Claim
18 words
thrust means for resisting longitudinal collapse of the balloon and the elongate tubular means in a proximal direction.
Claim 16
Dependent Claim
27 words
A catheter as defined in claim 3 further comprising: thurst means for resisting longitudinal collapse of the balloon and the elongate tubular means in a proximal direction.
Claim 17
Dependent Claim
27 words
A catheter as defined in claim 4 further comprising: thrust means for resisting longitudinal collapse of the balloon and the elongate tubular means in a proximal direction.
Claim 18
Dependent Claim
60 words
A catheter as defined in claim 12 wherein the thrusting means comprises a first distal thrust ring mounted to the distal end of the elongate tubular member, the ring having a central aperture through which the shaft passes; and a proximal thrusting ring mounted to the shaft proximally of the distal thrusting ring for abutment by the distal thrusting ring.
Claim 19
Dependent Claim
27 words
A catheter as defined in claim 5 further comprising: thrust means for resisting longitudinal collapse of the balloon and the elongate tubular means in a proximal direction.
Claim 20
Dependent Claim
59 words
A catheter as defined in claim 13 wherein the thrusting means comprises: a distal thrust ring mounted to the distal end of the elongate tubular member, the ring having a central aperture through which the shaft passes; and a proximal thrusting ring mounted to the shaft proximally of the distal thrusting ring for abutment by the distal thrusting ring.
Claim 21
Dependent Claim
59 words
A catheter as defined in claim 14 wherein the thrusting means comprises: a distal thrust ring mounted to the distal end of the elongate tubular member, the ring having a central aperture through which the shaft passes; and a proximal thrusting ring mounted to the shaft proximally of the distal thrusting ring for abutment by the distal thrusting ring.
Claim 22
Dependent Claim
59 words
A catheter as defined in claim 15 wherein the thrusting means comprises: a distal thrust ring mounted to the distal end of the elongate tubular member, the ring having a central aperture through which the shaft passes; and a proximal thrusting ring mounted to the shaft proximally of the distal thrusting ring for abutment by the distal thrusting ring.
Claim 23
Dependent Claim
30 words
A catheter as defined in claim 1 or any of claims 3-8 or 12-19 dimensioned to be percutaneously insertable into a patient's artery and advanceable into the patient's coronary arteries.
Claim 24
Dependent Claim
32 words
A balloon dilatation catheter as defined in claim 1 or claims 4 or 5 wherein said limited rotational movement includes at least five rotations of the shaft with respect to the balloon.
Claim 25
Dependent Claim
43 words
A catheter as defined in claim 4 further comprising: the inner sleeve having a thin wall and having an inner diameter slightly greater than the outer diameter of the core wire whereby the thin walled inner sleeve may be supported against longitudinal buckling.
Claim 26
Dependent Claim
34 words
A catheter as defined in claim 4 further comprising : the inner and outer sleeves and the core wire being formed from materials having relatively low coefficients of friction with respect to each other.
Claim 27
Dependent Claim
23 words
A catheter as defined in claim 23 wherein the outer sleeve is formed from polyethylene and the inner sleeve is formed from polyimide.
References Cited (Backward Citations)
No citation records indexed.
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