A61M 1/1621
Constructional aspects thereof
Official title: {Constructional aspects thereof (semi-permeable membranes for separation processes characterised by their properties B01D69/00; semi permeable membranes characterised by their material B01D71/00)}
A61M1/1621 (Constructional aspects thereof) appears on 1,209 US grants and 1,265 published applications in this corpus.
Search patents in A61M- Granted patents
- 1,209
- Published applications
- 1,265
- Assignees
- 339
- Inventors
- 1,804
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 10 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 11 | 0 |
| 1988 | 11 | 0 |
| 1989 | 7 | 0 |
| 1990 | 10 | 0 |
| 1991 | 9 | 0 |
| 1992 | 12 | 0 |
| 1993 | 17 | 0 |
| 1994 | 15 | 0 |
| 1995 | 9 | 0 |
| 1996 | 14 | 0 |
| 1997 | 27 | 0 |
| 1998 | 28 | 0 |
| 1999 | 22 | 0 |
| 2000 | 13 | 0 |
| 2001 | 14 | 5 |
| 2002 | 9 | 12 |
| 2003 | 22 | 10 |
| 2004 | 11 | 20 |
| 2005 | 5 | 24 |
| 2006 | 8 | 3 |
| 2007 | 11 | 11 |
| 2008 | 5 | 17 |
| 2009 | 8 | 26 |
| 2010 | 13 | 22 |
| 2011 | 11 | 35 |
| 2012 | 18 | 41 |
| 2013 | 27 | 36 |
| 2014 | 26 | 41 |
| 2015 | 46 | 71 |
| 2016 | 39 | 73 |
| 2017 | 54 | 85 |
| 2018 | 55 | 75 |
| 2019 | 87 | 88 |
| 2020 | 73 | 105 |
| 2021 | 64 | 102 |
| 2022 | 90 | 88 |
| 2023 | 69 | 90 |
| 2024 | 74 | 81 |
| 2025 | 91 | 61 |
| 2026 | 28 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A61M 1/1635With volume chamber balancing devices between used and fresh dialysis fluid278
- A61M 1/1623Disposition or location of membranes relative to fluids247
- A61M 1/1629With integral heat exchanger223
- A61M 1/165With a dialyser bypass on the dialysis fluid line140
- A61M 1/1643With weighing of fresh and used dialysis fluid102
- A61M 1/1649With pulsatile dialysis fluid flow80
- A61M 1/1633With more than one dialyser unit75
- A61M 1/1647With flow rate measurement of the dialysis fluid, upstream and downstream of75
Recent patents
- Support member for an integrated blood treatment fluid module6 Oct 2026US 12,752,043 B2B. Braun Avitum AG
- Oxygenator with improved blood mixing6 Oct 2026US 12,752,044 B2CardiacAssist, Inc.
- Medical treatment apparatus with overpressure in the port15 Sep 2026US 12,734,349 B2Fresenius Medical Care Deutschland GmbH
- Dialysis treatment and machine25 Aug 2026US 12,714,769 B2Fresenius Medical Care Holdings, Inc.
- Method and device for disconnection25 Aug 2026US 12,714,770 B2Fresenius Medical Care Deutschland GmbH
- Dialysis system for treating sepsis24 Sep 2026US 2026/0284284 A1Centre National de la Recherche Scientifique (CNRS)
- Parameter Monitoring in Medical Treatment Systems17 Sep 2026US 2026/0273154 A1NxStage Medical, Inc.
- Gas exchange tubing10 Sep 2026US 2026/0263670 A1ABIOMED, Inc.
- System using balancing chambers13 Aug 2026US 2026/0232882 A1Diality Inc.
- Ambulatory System with ECMO Device13 Aug 2026US 2026/0232885 A1
Most cited
By later US patents
- Method and apparatus for kidney dialysis736US 5,247,434 AAlthin Medical, Inc. · 1993
- Flow measurement system584US 4,827,430 ABaxter International Inc. · 1989
- Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof490US 5,591,344 AAksys, Ltd. · 1997
- Apparatus for performing a self-test of kidney dialysis membrane466US 5,486,286 AAlthin Medical, Inc. · 1996
- Technique for extracorporeal treatment of blood460US 5,910,252 ACobe Laboratories, Inc. · 1999