Radiation source

Details Radiation source Radiation source

1998-06-04

2000-04-25

Lacyk, John P.

Surgery

Radioactive substance applied to body for therapy

Radioactive substance placed within body

A61N 500

Patent

active

060538589

ABSTRACT:
A radiation source for invasive medical treatment, such as intracoronary radiotherapy or other such intravascular radiotherapy, is described. The radiation source includes a thread extending longitudinally within a sleeve. The sleeve is a hollow circular cylinder, sealed at either end, made from a polyimide resin, and is configured such that it is sufficiently flexible enough to be used for intravascular radiotherapy. A plurality of laser-drilled holes are configured in an evenly spaced pattern along the sleeve, and promote uniform liquid evaporation from within the sleeve. The thread is comprised of twelve rayon filaments wound in a helical fashion, which extend longitudinally through the sleeve and are anchored in the seals at either end of the sleeve. A radioactive isotope is formed into a coating on surfaces within the sleeve. The coating is formed by introducing a drop of a liquid-borne radioactive isotope into contact with the sleeve such that capillary forces distribute the liquid throughout the sleeve, and evaporating the liquid to form a uniform plating of the isotope within the sleeve. The sleeve and thread include a coating of a surfactant to promote capillary action during the distribution of the liquid throughout the sleeve. During the formation of the sleeve, the sleeve and thread are wet and then dried, preshrinking them so as to avoid the sleeve's warping during later use.

REFERENCES:
patent: 4861520 (1989-08-01), van't Hooft et al.
patent: 5176617 (1993-01-01), Fischell et al.
patent: 5575749 (1996-11-01), Liprie
patent: 5833593 (1998-11-01), Liprie
patent: 5871436 (1999-02-01), Eury

Affiliated with

Also associated with

Rating

Radiation source does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Radiation source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiation source will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-989629