Vacuum mixing/bone cement cartridge and kit
US5100241A · kind A · utility
Inventor
Key dates
| Filing date | Sep 21, 1990 |
| Grant date | Mar 31, 1992 |
| Priority date | — |
| Expiry date | Sep 21, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2101/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A two-component bone cement mixing system comprises a cartridge mixer having an interior volume containing a first predetermined quantity of a free-flowing, powdery, solid bone cement component under vacuum pressure; an ampoule containing a second predetermined quantity of a liquid bone cement component; a fluid transfer element for fluidically connecting the cartridge mixer and the ampoule for transfer of the liquid bone cement component to the cartridge mixer; and a plug element, receivable within the ampoule, for automatically hermetically sealing the fluid transfer element against passage of a material therethrough upon completion of the transfer of the second predetermined quantity of the liquid bone cement component into the cartridge mixer. The two-component bone cement mixing system allows in vacuo mixing of liquid monomeric and solid polymeric bone cement components without air being incorporated into the mixture and insures the prevention of air passage into the cartridge mixer during and/or after monomer transfer. In order to ensure transfer of all of the liquid monomer into the cartridge mixer, solely by vacuum pressure, the ratio of the interior volume of the cartridge…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.