A61M 5/31515
Connection of piston with piston rod
Official title: {Connection of piston with piston rod}
A61M5/31515 (Connection of piston with piston rod) appears on 631 US grants and 794 published applications in this corpus.
Search patents in A61M- Granted patents
- 631
- Published applications
- 794
- Assignees
- 286
- Inventors
- 1,321
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 4 | 2 |
| 2002 | 5 | 5 |
| 2003 | 4 | 11 |
| 2004 | 4 | 11 |
| 2005 | 2 | 9 |
| 2006 | 5 | 15 |
| 2007 | 4 | 12 |
| 2008 | 5 | 18 |
| 2009 | 6 | 24 |
| 2010 | 7 | 24 |
| 2011 | 9 | 26 |
| 2012 | 7 | 26 |
| 2013 | 22 | 42 |
| 2014 | 21 | 32 |
| 2015 | 28 | 44 |
| 2016 | 35 | 58 |
| 2017 | 50 | 59 |
| 2018 | 38 | 52 |
| 2019 | 44 | 31 |
| 2020 | 48 | 56 |
| 2021 | 46 | 54 |
| 2022 | 30 | 33 |
| 2023 | 39 | 61 |
| 2024 | 33 | 36 |
| 2025 | 28 | 29 |
| 2026 | 24 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ball joint-style, non-fixed coupling between a pusher plate and plunger in a syringe barrel15 Sep 2026US 12,734,292 B2Becton, Dickinson and Company
- Syringe with high pull-out resistance15 Sep 2026US 12,734,301 B2Laboratoires Vivacy
- System and method for collecting injection information8 Sep 2026US 12,728,212 B2Credence Medsystems, Inc.
- Medication delivery device including disposable and reusable portions25 Aug 2026US 12,714,789 B2Eli Lilly and Company
- Syringe with an improved needle retraction mechanism18 Aug 2026US 12,708,719 B2Roncadelle Operations SRL
- Add-on device for an injection device17 Sep 2026US 2026/0273194 A1Sanofi
- System and method for injection10 Sep 2026US 2026/0263698 A1Credence Medsystems, Inc.
- Auto-disable syringe10 Sep 2026US 2026/0263699 A1
- Plunger rod and plunger rod adapter for pistons20 Aug 2026US 2026/0241108 A1West Pharmaceutical Services, Inc.
- Piston assembly and method for operating a piston assembly23 Jul 2026US 2026/0207850 A1
Most cited
By later US patents
- Angiographic injector and angiographic syringe for use therewith307US 4,677,980 AMedrad, Inc. · 1987
- Syringes, syringe plungers and injector systems271US 5,947,935 AMedrad, Inc. · 1999
- Front-loading medical injector and syringes, syringe interfaces, syringe adapters and syringe plungers for use therewith250US 6,652,489 B2Medrad, Inc. · 2003
- Plunger systems248US 5,873,861 AMedrad, Inc. · 1999
- Pre-filled syringe drug delivery system224US 5,785,682 AAbbott Laboratories · 1998