Cement delivering device and method
US9095394B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2012 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Sep 23, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/0007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A delivery system includes a reservoir for storing pressurized fluid and a piston rod passing through the reservoir and having an end portion with a dimension larger than the piston rod. A sleeve is configured to engage the end portion of the piston rod such that when the piston rod is advanced, the end portion seals an opening in the sleeve. The sleeve and the end portion function as a piston for extracting fluid from a delivery chamber. When the piston rod is retracted, the sleeve engages a portion of the end portion to permit the reservoir to communicate with the delivery chamber through the opening. Methods of use are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.