A61M 1/84
Drainage tubes
Official title: {Drainage tubes; Aspiration tips (for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32)}
A61M1/84 (Drainage tubes) appears on 2,424 US grants and 3,008 published applications in this corpus.
Search patents in A61M- Granted patents
- 2,424
- Published applications
- 3,008
- Assignees
- 1,002
- Inventors
- 3,990
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 7 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 9 | 0 |
| 1985 | 10 | 0 |
| 1986 | 10 | 0 |
| 1987 | 22 | 0 |
| 1988 | 11 | 0 |
| 1989 | 24 | 0 |
| 1990 | 25 | 0 |
| 1991 | 26 | 0 |
| 1992 | 36 | 0 |
| 1993 | 36 | 0 |
| 1994 | 29 | 0 |
| 1995 | 22 | 0 |
| 1996 | 31 | 0 |
| 1997 | 31 | 0 |
| 1998 | 35 | 0 |
| 1999 | 34 | 0 |
| 2000 | 33 | 0 |
| 2001 | 22 | 9 |
| 2002 | 36 | 35 |
| 2003 | 39 | 44 |
| 2004 | 21 | 48 |
| 2005 | 27 | 70 |
| 2006 | 22 | 43 |
| 2007 | 13 | 71 |
| 2008 | 23 | 53 |
| 2009 | 25 | 75 |
| 2010 | 34 | 90 |
| 2011 | 51 | 93 |
| 2012 | 50 | 97 |
| 2013 | 78 | 106 |
| 2014 | 103 | 148 |
| 2015 | 91 | 139 |
| 2016 | 89 | 135 |
| 2017 | 92 | 173 |
| 2018 | 99 | 161 |
| 2019 | 152 | 164 |
| 2020 | 121 | 208 |
| 2021 | 130 | 199 |
| 2022 | 137 | 222 |
| 2023 | 147 | 186 |
| 2024 | 166 | 179 |
| 2025 | 126 | 148 |
| 2026 | 68 | 112 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fecal management systems and methods6 Oct 2026US 12,752,046 B2CM Technologies, Inc.
- Vacuum therapy devices and methods29 Sep 2026US 12,746,324 B2Cambridge University Hospitals NHS Foundation Trust
- Vacuum chamber with snap fit plunger mechanism22 Sep 2026US 12,741,075 B2C. R. Bard, Inc.
- Oral phlegm extraction system and method of using same22 Sep 2026US 12,741,079 B2
- Rapid aspiration thrombectomy system and method15 Sep 2026US 12,734,333 B2Route 92 Medical, Inc.
- Large bore suction overtube8 Oct 2026US 2026/0305924 A1
- Systems, devices, and methods of treating a narrowing of a blood vessel8 Oct 2026US 2026/0306284 A1Route 92 Medical, Inc.
- Wound closure system having microcannulaic pathways1 Oct 2026US 2026/0294689 A1Cilag GmbH International
- Coiled Catheter and Methods of Use1 Oct 2026US 2026/0295143 A1
- Apparatuses and methods for negative pressure wound therapy24 Sep 2026US 2026/0283856 A1Smith & Nephew, Inc.
Most cited
By later US patents
- Wound treatment employing reduced pressure2,003US 5,636,643 AWake Forest University · 1997
- Wound dressing and treatment method1,821US 4,969,880 A1990
- Powered surgical apparatus, method of manufacturing powered surgical apparatus, and method of using powered surgical apparatus1,743US 7,473,263 B2Gyrus Ent, L.L.C. · 2009
- Method of treating tissue damage and apparatus for same1,737US 5,645,081 AWake Forest University · 1997
- Fastening system and method1,644US 5,527,293 AKinetic Concepts, Inc. · 1996