Fluid delivery apparatus
US11944746B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2018 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Jul 31, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1091
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fluid delivery apparatus comprises a first piston body, a second piston body, a fluid delivery pipe, and a sealing element. The first piston body has a first through hole, a first connecting portion, an accommodation space and a buffer space. The second piston body has a second through hole and a second connecting portion disposed inside the accommodation space. The fluid delivery pipe is accommodated in the first through hole and the second through hole, and movable between a first position and a second position. The sealing element encircles the fluid delivery pipe. When the fluid delivery pipe is at the first position, the sealing element is accommodated in the accommodation space. When the fluid delivery pipe is at the second position, a first part of the sealing element is accommodated in the accommodation space, and a second part of the sealing element is accommodated in the buffer space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.