A61B 5/026
Measuring blood flow
Official title: Measuring blood flow {(A61B3/1233, A61B3/1241 take precedence)}
A61B5/026 (Measuring blood flow) appears on 6,116 US grants and 8,676 published applications in this corpus.
Search patents in A61B- Granted patents
- 6,116
- Published applications
- 8,676
- Assignees
- 2,512
- Inventors
- 12,281
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 12 | 0 |
| 1978 | 9 | 0 |
| 1979 | 11 | 0 |
| 1980 | 20 | 0 |
| 1981 | 8 | 0 |
| 1982 | 8 | 0 |
| 1983 | 10 | 0 |
| 1984 | 8 | 0 |
| 1985 | 11 | 0 |
| 1986 | 24 | 0 |
| 1987 | 14 | 0 |
| 1988 | 14 | 0 |
| 1989 | 27 | 0 |
| 1990 | 19 | 0 |
| 1991 | 21 | 0 |
| 1992 | 20 | 0 |
| 1993 | 30 | 0 |
| 1994 | 32 | 0 |
| 1995 | 19 | 0 |
| 1996 | 28 | 0 |
| 1997 | 36 | 0 |
| 1998 | 44 | 0 |
| 1999 | 42 | 0 |
| 2000 | 53 | 0 |
| 2001 | 69 | 20 |
| 2002 | 66 | 96 |
| 2003 | 81 | 115 |
| 2004 | 64 | 119 |
| 2005 | 60 | 102 |
| 2006 | 66 | 126 |
| 2007 | 62 | 132 |
| 2008 | 41 | 172 |
| 2009 | 70 | 181 |
| 2010 | 73 | 243 |
| 2011 | 91 | 185 |
| 2012 | 137 | 242 |
| 2013 | 198 | 309 |
| 2014 | 211 | 452 |
| 2015 | 226 | 464 |
| 2016 | 239 | 581 |
| 2017 | 294 | 540 |
| 2018 | 261 | 541 |
| 2019 | 460 | 589 |
| 2020 | 411 | 627 |
| 2021 | 428 | 634 |
| 2022 | 461 | 513 |
| 2023 | 433 | 514 |
| 2024 | 428 | 443 |
| 2025 | 415 | 456 |
| 2026 | 237 | 280 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A61B 5/0261Using optical means2,012
- A61B 5/029Measuring blood output from the heart1,075
- A61B 5/0295Using plethysmography, i.e. measuring the variations in the volume of a body1,074
- A61B 5/0275Using tracers590
- A61B 5/0263Using nmr547
- A61B 5/0285Measuring or recording phase velocity of blood waves421
- A61B 5/0265Using electromagnetic means311
Recent patents
- Intravascular pressure and flow data diagnostic systems, devices, and methods6 Oct 2026US 12,751,638 B2St. Jude Medical Coordination Center Bvba
- Method and apparatus for measuring intravascular blood flow using a backscattering contrast6 Oct 2026US 12,751,639 B2The General Hospital Corporation
- Processor device, method of operating the same, and endoscope system29 Sep 2026US 12,745,893 B2FUJIFILM Corporation
- System and method for evaluating vascular health condition of a person using thermal imaging29 Sep 2026US 12,745,913 B2Aarca Research Inc.
- Method of manufacturing smart ring, and smart ring manufactured through the method29 Sep 2026US 12,745,919 B2ZTACOM Co., Ltd.
- Systems and methods for cardiovascular magnetic resonance imaging8 Oct 2026US 2026/0305946 A1Ohio State Innovation Foundation
- System for Obtaining Diagnostic Data Indicative of a Cardiac Condition of a Patient8 Oct 2026US 2026/0305956 A1Biotronik SE & Co.KG
- Predicting probability of developing preeclampsia8 Oct 2026US 2026/0305957 A180 Beats Medical GmbH
- Performance of ai algorithm for detection of blood pressure8 Oct 2026US 2026/0305958 A1Aktiia SA
- Performance of ai algorithm for detection of blood pressure8 Oct 2026US 2026/0305959 A1Aktiia SA
Most cited
By later US patents
- Signal processing apparatus1,538US 6,081,735 AMasimo Corporation · 2000
- System for determining the location and orientation of an invasive medical instrument1,444US 6,690,963 B2Biosense, Inc. · 2004
- Surgical instruments with sensors for detecting tissue properties, and system using such instruments1,374US 9,204,830 B2Surgisense Corporation · 2015
- Signal processing apparatus1,373US 5,632,272 AMasimo Corporation · 1997
- Signal processing apparatus1,365US 6,157,850 AMasimo Corporation · 2000