Surgery – Radioactive substance applied to body for therapy – Radioactive substance placed within body
Patent
1998-03-26
1999-12-07
Gilbert, Samuel
Surgery
Radioactive substance applied to body for therapy
Radioactive substance placed within body
29592, A61M 3600, A61N 500
Patent
active
05997463&
ABSTRACT:
A brachytherapy source for use in radiation treatment of the body includes radioactive material, and a housing. The housing is used to contain the radioactive materials, and is formed by at least one tube having two ends. The two ends of the at least one tube are sealed by welding such that a radiation distribution of the brachytherapy source approximates a point source that is free of cold zones to minimize underexposure or overexposure of the body to radiation and to simplify the placement of the brachytherapy source in the body. Preferably, the ends of the at least one tube are sealed by laser welding, and a laser performs the laser welding while the brachytherapy source is rotated relative to the laser, which is activated in short pulses. For example, the laser is activated in a first series of pulses to initially collapse one end of the at least one tube and to at least partially close off the one end, then the laser is activated for a second series of pulses to seal off the one end of the at least one tube and remove excess material, next the laser is activated in a third series of pulses to initially collapse the other end of the at least one tube and to at least partially close off the other end, and finally, the laser is activated for a fourth series of pulses to seal off the other end of the at least one tube and remove excess material.
REFERENCES:
patent: 1718899 (1929-06-01), Fischer
patent: 1954868 (1934-04-01), Failla et al.
patent: 3351049 (1967-11-01), Lawrence
patent: 3663685 (1972-05-01), Evans
patent: 4101646 (1978-07-01), Sugimoto
patent: 4323055 (1982-04-01), Kubiatowicz
patent: 4675150 (1987-06-01), Russell, Jr. et al.
patent: 4702228 (1987-10-01), Russell, Jr. et al.
patent: 4784116 (1988-11-01), Russell, Jr. et al.
patent: 4827493 (1989-05-01), Parsons et al.
patent: 4874613 (1989-10-01), Hsiao
patent: 4891165 (1990-01-01), Suthanthiran
patent: 5080278 (1992-01-01), Streckenbach et al.
patent: 5084002 (1992-01-01), Liprie
patent: 5163896 (1992-11-01), Suthanthiran et al.
patent: 5405309 (1995-04-01), Carden, Jr.
patent: 5460592 (1995-10-01), Langton et al.
patent: 5503614 (1996-04-01), Liprie
patent: 5575749 (1996-11-01), Liprie
patent: 5683345 (1997-11-01), Waksman et al.
"I-125 Seed Source Model 6702" leaflet.
Gilbert Samuel
North American Scientific
LandOfFree
Laser welded brachytherapy source and method of making the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser welded brachytherapy source and method of making the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser welded brachytherapy source and method of making the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-818245