A61M 39/26
Valves closing automatically on disconnecting the line and opening on reconnection thereof
Official title: Valves closing automatically on disconnecting the line and opening on reconnection thereof {(check valves A61M39/24)}
A61M39/26 (Valves closing automatically on disconnecting the line and opening on reconnection thereof) appears on 1,266 US grants and 1,437 published applications in this corpus.
Search patents in A61M- Granted patents
- 1,266
- Published applications
- 1,437
- Assignees
- 381
- Inventors
- 1,634
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 14 | 0 |
| 1994 | 12 | 0 |
| 1995 | 16 | 0 |
| 1996 | 24 | 0 |
| 1997 | 21 | 0 |
| 1998 | 31 | 0 |
| 1999 | 11 | 0 |
| 2000 | 23 | 0 |
| 2001 | 20 | 8 |
| 2002 | 12 | 22 |
| 2003 | 16 | 29 |
| 2004 | 16 | 37 |
| 2005 | 19 | 36 |
| 2006 | 31 | 98 |
| 2007 | 14 | 60 |
| 2008 | 16 | 76 |
| 2009 | 23 | 37 |
| 2010 | 61 | 50 |
| 2011 | 48 | 67 |
| 2012 | 42 | 52 |
| 2013 | 57 | 59 |
| 2014 | 50 | 75 |
| 2015 | 57 | 70 |
| 2016 | 53 | 53 |
| 2017 | 55 | 52 |
| 2018 | 61 | 73 |
| 2019 | 59 | 71 |
| 2020 | 57 | 50 |
| 2021 | 49 | 60 |
| 2022 | 56 | 59 |
| 2023 | 43 | 64 |
| 2024 | 62 | 97 |
| 2025 | 55 | 61 |
| 2026 | 38 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A61M 2039/267Having a sealing sleeve around a tubular or solid stem portion ofIndexing code411
- A61M 2039/263Where the fluid space within the valve is decreasing upon disconnectionIndexing code210
- A61M 2039/266Where the valve comprises venting channelsIndexing code141
- A61M 2039/262Having a fluid space within the valve remaining the same upon connectionIndexing code103
- A61M 2039/261Where the fluid space within the valve is increasing upon disconnectionIndexing code89
- A61M 2039/265Electrically operatedIndexing code6
Recent patents
- Needleless connector having check valve with concave flow surface29 Sep 2026US 12,746,383 B2CareFusion 303, Inc.
- Septum to facilitate blood collection and related methods1 Sep 2026US 12,721,969 B2Becton, Dickinson and Company
- Device and method for administering liquid to the ear canal1 Sep 2026US 12,721,982 B2The Regents of the University of California
- Needleless connector with support member25 Aug 2026US 12,714,843 B2CareFusion 303, Inc.
- Medical connector18 Aug 2026US 12,708,754 B2Nipro Corporation
- Dripless fluid coupling devices and methods of use8 Oct 2026US 2026/0306821 A1EMD Millipore Corporation
- Needleless connector with support member1 Oct 2026US 2026/0295233 A1CareFusion 303, Inc.
- Self-Closing Needle and Fluid Loss Prevention Methods20 Aug 2026US 2026/0241097 A1Fresenius Medical Care Holdings, Inc.
- Auto shut off male luer fitting13 Aug 2026US 2026/0232983 A1CareFusion 303, Inc.
- Aseptic fluid couplings13 Aug 2026US 2026/0235239 A1Colder Products Company
Most cited
By later US patents
- Devices for sampling, drainage or infusion of liquids from or to the human or animal body659US 4,935,010 APharmacia Corporation · 1990
- Luer receiver and method for fluid transfer650US 6,171,287 B2Becton, Dickinson and Company · 2001
- Valve for use with a catheter or the like575US 4,143,853 AMetatech Corporation · 1979
- Valve for permanent venous cannulae or for catheter insertion means569US 4,917,668 AB. Braun Melsungen AG · 1990
- Constant flow medication infusion pump544US 5,957,890 AMiniMed Inc. · 1999