Precision implant needle and method of using same in seed implant treatment of prostate cancer
US5938583A · kind A · utility
121Cited by
6References
11Claims
0Family size
Inventor
Key dates
| Filing date | Dec 29, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Dec 29, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The needle combination includes an insertion stylet which has a small diameter and is rigid. The tip of the insertion stylet is sharp for ease of insertion into the prostate. A needle sleeve has a larger diameter than the insertion stylet and is inserted into the prostate around the insertion stylet. A needle is loaded with radioactive seeds and spacers and is inserted, along with an implant stylet, into the sleeve after the insertion stylet has been removed. The needle and the sleeve are then removed together, while holding the implant stylet in place, so that the seeds are deposited in the prostate in desired locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.