Guidewire with safety ribbon with substantially axially symmetri

Details Guidewire with safety ribbon with substantially axially symmetri Guidewire with safety ribbon with substantially axially symmetri

1992-10-09

1994-04-05

Hindenburg, Max

Surgery

Truss

Pad

A61B 500

Patent

active

052995801

ABSTRACT:
A novel intravascular device is provided having a distal end including a flexible portion having an axis of elongation. The flexible portion comprises a first twist and a first flat defining a first plane, and a second twist and a second flat defining a second plane. The first plane is substantially orthogonal to the second plane for providing the distal end of the device with substantially symmetric flexibility about the axis of elongation. A novel method of manufacturing a safety ribbon for an intravascular device is also provided. The method comprises the steps of: providing an intravascular device having a substantially rounded core wire at a distal end of the device; flattening the core wire to form a substantially rectangular configuration; fixing one end of the configuration against rotation; and rotating an opposite end of the configuration with respect to the one end, thereby substantially permanently altering the configuration. Alternatively, the method can comprise the steps of: providing an element having a substantially rounded configuration; flattening the element to form a substantially rectangular configuration; providing a coil for operative attachment to the rectangular configuration; twisting the coil so as to place the coil under torsion; maintaining the coil in a torsioned condition; operatively attaching the coil to the rectangular configuration; and effectively releasing the coil such that the coil relaxes, thereby allowing torsion on the coil to twist the rectangular configuration to permanently alter the rectangular configuration.

REFERENCES:
patent: 3906938 (1975-09-01), Fleischhacker
patent: 4474174 (1984-10-01), Petruzzi
patent: 4763647 (1988-08-01), Gambale
patent: 4800890 (1989-01-01), Cramer
patent: 5007434 (1991-04-01), Doyle et al.

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