Pressurizing syringe
US4492317A · kind A · utility
5Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1982 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Aug 19, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/4281
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pressurizing syringe includes one or more dimple-shaped snapdomes located between the plunger and piston of a syringe assembly. When the plunger is depressed, the snapdomes will deflect at a known pressure level, giving the user a tactile and audible indication that the syringe is compressing fluid at the desired pressure. A method for using a pressurizing syringe to pressurize the fluid-filled compartment of an ultrasonic scan head is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.