A61M 5/31543
Piston rod reset means, i.e. means for causing or facilitating retraction of
Official title: {piston rod reset means, i.e. means for causing or facilitating retraction of piston rod to its starting position during cartridge change}
A61M5/31543 (Piston rod reset means, i.e. means for causing or facilitating retraction of) appears on 273 US grants and 301 published applications in this corpus.
Search patents in A61M- Granted patents
- 273
- Published applications
- 301
- Assignees
- 57
- Inventors
- 361
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 1 |
| 2004 | 1 | 3 |
| 2005 | 3 | 4 |
| 2006 | 1 | 3 |
| 2007 | 2 | 4 |
| 2008 | 2 | 5 |
| 2009 | 2 | 13 |
| 2010 | 3 | 15 |
| 2011 | 3 | 7 |
| 2012 | 7 | 39 |
| 2013 | 12 | 20 |
| 2014 | 13 | 22 |
| 2015 | 25 | 20 |
| 2016 | 28 | 37 |
| 2017 | 33 | 17 |
| 2018 | 18 | 13 |
| 2019 | 28 | 20 |
| 2020 | 14 | 5 |
| 2021 | 11 | 14 |
| 2022 | 7 | 10 |
| 2023 | 7 | 10 |
| 2024 | 9 | 12 |
| 2025 | 14 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for the dosed administration of a fluid product, adapted for the replacement of a container14 Jul 2026US 12,678,568 B2Ypsomed AG
- Drug injection control device having cartridge drug release structure through screw coupling between piston rod and rod guide12 May 2026US 12,623,028 B2Poonglim Pharmatech Inc.
- Drug injection control device having stable operation structure of injection button through button plate positioned in dose dial10 Mar 2026US 12,569,623 B2Poonglim Pharmatech Inc.
- Miniaturized wearable medication administration device16 Dec 2025US 12,496,401 B2RX Bandz, LLC
- Reusable torsion spring driven injection device2 Dec 2025US 12,485,229 B2Novo Nordisk A/S
- Miniaturized wearable medication administration device19 Feb 2026US 2026/0048201 A1RX Bandz, LLC
- System and method for multiple site dispensing or injection12 Feb 2026US 2026/0041850 A1Credence Medsystems, Inc.
- Injector pen and dose adjustment mechanism thereof18 Sep 2025US 2025/0288747 A1Suzhou Healthy Tree Medical Technology Co., Ltd.
- Drive mechanism for an injection device28 Aug 2025US 2025/0269117 A1Sanofi
- Self-Controllable Load Spring Washer26 Jun 2025US 2025/0205428 A1Becton, Dickinson and Company
Most cited
By later US patents
- Large dose pen661US 5,626,566 ANovo Nordisk A/S · 1997
- Reusable medication delivery pen567US 5,279,586 ABecton, Dickinson and Company · 1994
- Syringe with dose metering device529US 5,104,380 AOwen Mumford Limited · 1992
- Medication delivery pen having an improved clutch assembly483US 5,921,966 ABecton, Dickinson and Company · 1999
- Medication delivery pen cap actuated dose delivery clutch444US 5,674,204 ABecton, Dickinson and Company · 1997