A61M 1/81
Piston pumps
Official title: {Piston pumps, e.g. syringes}
A61M1/81 (Piston pumps) appears on 349 US grants and 484 published applications in this corpus.
Search patents in A61M- Granted patents
- 349
- Published applications
- 484
- Assignees
- 221
- Inventors
- 712
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 1 |
| 2002 | 5 | 5 |
| 2003 | 2 | 8 |
| 2004 | 4 | 11 |
| 2005 | 3 | 12 |
| 2006 | 1 | 8 |
| 2007 | 5 | 5 |
| 2008 | 1 | 7 |
| 2009 | 2 | 11 |
| 2010 | 9 | 20 |
| 2011 | 5 | 17 |
| 2012 | 12 | 18 |
| 2013 | 14 | 16 |
| 2014 | 15 | 12 |
| 2015 | 13 | 24 |
| 2016 | 12 | 16 |
| 2017 | 14 | 34 |
| 2018 | 23 | 29 |
| 2019 | 21 | 32 |
| 2020 | 26 | 32 |
| 2021 | 16 | 26 |
| 2022 | 21 | 30 |
| 2023 | 25 | 37 |
| 2024 | 28 | 40 |
| 2025 | 9 | 15 |
| 2026 | 15 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Suction device for sucking obstruction in respiratory tract and use method therefor25 Aug 2026US 12,714,774 B2Dcstar Inc
- System for treating embolism and associated devices and methods11 Aug 2026US 12,702,538 B2Stryker Corporation
- Valve modules and methods for introducer assemblies and rapidly insertable central-catheter insertion assemblies11 Aug 2026US 12,702,801 B2Bard Access Systems, Inc.
- Systems and methods for fat harvesting28 Jul 2026US 12,691,210 B2Chopra Gryskiewicz, LLC
- Aspiration monitoring system and method16 Jun 2026US 12,653,555 B2Incuvate, LLC
- Catheter Device System and Method of Use24 Sep 2026US 2026/0284358 A1PAVmed Inc.
- Aspiration monitoring system and method13 Aug 2026US 2026/0232333 A1Incuvate, LLC
- Aspiration vacuum source13 Aug 2026US 2026/0232889 A1Neuravi Limited
- Aspiration sheath with integrated dilator and aspiration sleeve16 Jul 2026US 2026/0198950 A1Boston Scientific Scimed, Inc.
- Thrombectomy apparatus and method25 Jun 2026US 2026/0174448 A1Varian Medical Systems, Inc.
Most cited
By later US patents
- Orthopedic autotransfusion system1,140US 5,279,550 AGish Biomedical, Inc. · 1994
- Wound cleansing apparatus in-situ394US 7,964,766 B2Smith & Nephew, Inc. · 2011
- Device for vacuum-sealing an injury377US 6,174,306 B12001
- Wound cleansing apparatus in-situ309US 8,080,702 B2Smith & Nephew, Inc. · 2011
- Blood aspiration system and methods of use308US 7,223,253 B2Gore Enterprise Holdings, Inc. · 2007