Apparatus including a cylindrical body and a nub
US11350967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2019 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Jan 8, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus may include a plunger and a substantially cylindrical body. The substantially cylindrical body may include an end portion having rounded edges and may define a cavity sized to receive the plunger. The substantially cylindrical body may include at least one opening extending from the cavity to an external surface. The at least one opening may a substantially irregular shape. In some embodiments, the at least one opening may extend from the cavity through a nub to the external surface. The nub may have a rounded shape. In some embodiments, the substantially irregular shape may include one of a slit, an oval shape, an elliptical shape, an hourglass shape, a rectangular shape, and a diamond shape. In some embodiments, the opening may be part of a non-cylindrical fluid passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.