Surgical and pharmaceutical site access guide and methods
US6203524A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1998 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Aug 4, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/018
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A guide (100) is provided for biopsy and microtherapy which includes an introducer cannula (120) defining a lumen (125) sized to receive a diagnostic or therapeutic item therethrough and a lateral opening (124) in communication with the lumen (125) adjacent the first end (121) of the cannula (120). The invention also includes a solid tip (130) having an anatomically distal end (131) secured to the first end (121) of the cannula (120) and a proximal end (132) configured to pierce tissue. A ramp (135) is disposed within the cannula (120) at an end (136) of the lateral opening (124) adjacent the first end (121) of the cannula (120). The ramp (135) is inclined toward the lateral opening (124), whereby the item will be deflected through the lateral opening (124) as it advances within the lumen (125) and exits the cannula (120). In some embodiments, the item is a biopsy needle, ablation means or a radiopharmaceutical seed. The invention also includes methods of obtaining a biopsy sample and methods for treating lesions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.