Device for paracentisis and thoracentisis
US5997486A · kind A · utility
57Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Apr 24, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/76
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus for removing fluid from the body of a patient, such as in paracentesis and thoracentesis. Fluid may be withdrawn via a retractable needle assembly, including a sharp introducing needle and a retractile blunt needle. The needle assembly is housed in a housing having a chamber with two oriented grommets that prevent fluid flow through the chamber (other than through the needle assembly) both when the needle assembly is inserted through the chamber and when it is withdrawn. A beam spring blocks the chamber after the needle assembly is withdrawn so that the device cannot be reused.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.