Mechanical apparatus and method for dilating and irradiating a s

Details Mechanical apparatus and method for dilating and irradiating a s Mechanical apparatus and method for dilating and irradiating a s

1997-11-13

2000-05-09

Weiss, John G.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604104, 606194, A61M 2900

Patent

active

060597526

ABSTRACT:
A mechanical dilatation and irradiation device for enlarging a flow passage of a vessel by dilating and irradiating an obstruction in the vessel. The present invention comprises a substantially cylindrically shaped expansion member and includes a means engaged to the expansion member for altering the distance between the proximal end and the distal end of the expansion member thereby transforming the expansion member between a diametrically contracted configuration to diametrically expanded configuration. A radioisotope is place either inside the expansion member, alloyed into the metal from which the expansion member is constructed, coated onto the expansion member's exterior surface or alternately, the non-radioactive metal or alloy of the expansion member can be irradiated so that it has become radioactive, i.e. it is then a radioisotope. The present method comprises the steps of advancing the radioactive expansion member or radioactive catheter to the obstruction in a vessel and applying opposed forces on said expansion member in an axial direction to move the expansion member to an expanded configuration wherein the expansion member dilates the obstruction and the catheter/expansion member assembly irradiates the obstruction.

REFERENCES:
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patent: 5484304 (1996-01-01), Fearnot
patent: 5540659 (1996-07-01), Teirstein
patent: 5683345 (1997-11-01), Waksman et al.
patent: 5722984 (1998-03-01), Fischell et al.
patent: 5730698 (1998-03-01), Fischell et al.
patent: 5851171 (1998-12-01), Gasson

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