A61M 5/281
Using emptying means to expel or eject media
Official title: {using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule}
A61M5/281 (Using emptying means to expel or eject media) appears on 375 US grants and 462 published applications in this corpus.
Search patents in A61M- Granted patents
- 375
- Published applications
- 462
- Assignees
- 206
- Inventors
- 800
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 13 | 0 |
| 1997 | 9 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 10 | 0 |
| 2001 | 5 | 4 |
| 2002 | 6 | 12 |
| 2003 | 12 | 10 |
| 2004 | 4 | 9 |
| 2005 | 4 | 7 |
| 2006 | 4 | 11 |
| 2007 | 6 | 11 |
| 2008 | 3 | 7 |
| 2009 | 1 | 9 |
| 2010 | 7 | 15 |
| 2011 | 4 | 7 |
| 2012 | 6 | 21 |
| 2013 | 6 | 16 |
| 2014 | 7 | 16 |
| 2015 | 7 | 15 |
| 2016 | 12 | 16 |
| 2017 | 12 | 21 |
| 2018 | 12 | 28 |
| 2019 | 19 | 18 |
| 2020 | 18 | 32 |
| 2021 | 20 | 32 |
| 2022 | 23 | 34 |
| 2023 | 25 | 33 |
| 2024 | 18 | 43 |
| 2025 | 20 | 17 |
| 2026 | 14 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Relocation module and methods for surgical equipment4 Aug 2026US 12,697,266 B2Augustine Biomedical + Design, LLC
- Medication delivery device with needle carrier16 Jun 2026US 12,653,954 B2Eli Lilly and Company
- Anti-rotation cartridge pin16 Jun 2026US 12,653,955 B2West Pharma. Services IL, Ltd.
- Sequential drug delivery syringe16 Jun 2026US 12,653,958 B2Becton, Dickinson and Company
- Systems and methods for pre-filled medical delivery assemblies2 Jun 2026US 12,642,912 B2ApiJect
- Medication delivery device with needle carrier8 Oct 2026US 2026/0306746 A1Eli Lilly and Company
- Mechanisms and methods for controlled volume injection into a soft media with concurrent pressure measurement24 Sep 2026US 2026/0283467 A1Massachusetts Institute of Technology
- Systems and methods for blow-fill-seal (bfs) tear-activation valves3 Sep 2026US 2026/0257018 A1Koska Family Limited
- Medicament Delivery Device27 Aug 2026US 2026/0249018 A1Genzyme Corporation
- Carpule having collapsible chamber and use thereof13 Aug 2026US 2026/0232909 A1Pharmaphdii, LLC
Most cited
By later US patents
- Apparatus and method for rapid auto-injection of medication361US 6,979,316 B1Seedlings Life Science Ventures, LLC · 2005
- Shield assembly for hypodermic injection devices336US 4,795,432 A1989
- Multipathway electronically-controlled drug delivery system329US 5,860,957 ASarcos Corp. · 1999
- Disposable automatic injection device326US 6,086,562 ASarcos Corp. · 2000
- Disposable fluid injection module299US 6,045,534 ASarcos Corp. · 2000