Applicator for semisolid medications
US5531703A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1994 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Oct 26, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/31506
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An applicator 10 includes a barrel 12 for containing a semisolid medicinal, the barrel including a large diameter cylindrical section 16, a small diameter cylindrical section 18 and an annular sloped transition section 20 that connects the large diameter cylindrical section and the small diameter cylindrical section, the sections being coaxial with each other, the small diameter cylindrical section including an inner surface defining an internal cavity for containing the medicinal, a first end 30 with a first opening 32 and equiangularly spaced, axially aligned evacuation channels 28 in the inner surface for venting air out of the barrel when the internal cavity is filled with the medicinal, and the large diameter cylindrical section includes a second opposite end with a second opening 24; a rubber plunger 58 for pushing the medicinal through the first opening, the plunger being slidably positioned in sealing contact with the inner surface of the small diameter cylindrical section; a plunger rod 86 connected with the plunger and contained within the barrel; a removable cap 40 for sealingly closing off the first opening and for applying a pushing force to the plunger rod when the ca…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.