EP0347035A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Guidewire extension with selflatching detachable connection
Assignee: Medtronic Vascular Inc
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Filing: 1989-04-27
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Granted: —
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Expires: 2009-04-27
Abstract
Abstract A guidewire system (12) for use in catheter exchanges avoids the need for a separate exchange wire (20) by connecting an extension wire (30) to the proximal end of the guidewire thereby increasing the effective length of the guidewire to permit a catheter exchange. The proximal end of the guidewire is attached to the distal end of the exchange wire by a disconnectable reattachable connection which avoids deformation of the connected joint.
Inventors
- 👤 Thomas J. Palermo
- 👤 Stephen M. Salmon
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 17:28
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M25/0905
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
81 words
A guidewire for use with a catheter and an extension for the guidewire for enabling multiple catheter exchanges comprising: a guidewire having a proximal end and a distal end; an extension wire having a proximal end and a distal end; cooperative self-latching connector means on the proximal end of the guidewire and the distal end of the extension wire for detachably connecting the guidewire and extension wire, said connector means being so constructed and arranged as to be reconnectable after detachment.
Claim 2
Dependent Claim
81 words
A guidewire for use with a catheter and an extension for the guidewire for enabling multiple catheter exchanges comprising: a guidewire having a proximal end and a distal end; an extension wire having a proximal end and a distal end; cooperative self-latching connector means on the proximal end of the guidewire and the distal end of the extension wire for detachably connecting the guidewire and extension wire, said connector means being so constructed and arranged as to be reconnectable after detachment.
Claim 3
Dependent Claim
36 words
A guidewire and extension therefor as defined in claim 1 wherein the connector means is free of permanent deformation of either of the proximal end of the guidewire or the distal end of the extension wire.
Claim 4
Dependent Claim
20 words
A guidewire and extension therefor as defined in claim 2 wherein the connector means further comprises an axially telescoping construction.
Claim 5
Dependent Claim
46 words
A guidewire and extension therefor as defined in claim 3 wherein the guidewire is provided with a socket at its proximal end and the extension wire has a self latching latch member at its distal end, the self latching latch member being received within the socket.
Claim 6
Dependent Claim
59 words
A guidewire and extension therefor as defined in claim 4 wherein the latch member comprises: a helical coil attached at its distal end to the distal portion of the extension wire the proximal end of the helical coil being free to enable the helical coil to stretch axially and constrict radially about the distal end of the extension wire.
Claim 7
Dependent Claim
20 words
A guidewire and extension therefor as defined in claim 5 wherein the coil is formed from rectangular cross section wire.
Claim 8
Dependent Claim
37 words
A guidewire and extension therefor as defined in claim 5 wherein the guidewire extension comprises an elongate shaft, the distal portion thereof being of reduced diameter, said helical coil being mounted on said reduced diameter distal portion.
Claim 9
Dependent Claim
41 words
A guidewire and extension therefor as defined in claim 5 wherein some of the turns of the helical coil, at the proximal end of the helical coil are of slightly larger diameter than the more distally located turns of the coil.
Claim 10
Dependent Claim
37 words
A guidewire and extension therefor as defined in claim 5 in which the diameter of the guidewire is substantially the same as the diameter of the extension, except at the reduced diameter distal end of the extension.
Claim 11
Dependent Claim
59 words
A guidewire as defined in any of claims 5-7 and 9 wherein the helical coil is of a length and is so mounted on the distal end of the extension wire so that when the extension wire is inserted fully into the socket of the guidewire a proximal segment of the coil will be exposed proximally of the guidewire.
Claim 12
Dependent Claim
38 words
A guidewire and extension therefor as defined in claim 10 wherein some of the turns of the helical coil that remain within the socket are of slightly larger diameter than the more distally located turns of the coil.
References Cited (Backward Citations)
No citation records indexed.
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