Method and apparatus for inducing anesthesia
US5232442A · kind A · utility
57Cited by
21References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1991 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Dec 26, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/3401
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides apparatus and methods for introducing spinal anesthesia directly into the subarachnoid space of a patient. One apparatus and method utilizes a small gauge spinal needle for penetrating the dura; the other utilizes a small gauge catheter with an internal stylet having a non-piercing pencil point to spread apart the filaments of the dura wall. An introducer having a rounded tip is also provided for guiding and supporting the spinal needle or catheter, as force is applied thereto, to cause the same to penetrate the dura.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.