A61M 5/31501

Means for blocking or restricting the movement of the rod or piston

Official title: {Means for blocking or restricting the movement of the rod or piston (A61M5/5013 takes precedence)}

A61M5/31501 (Means for blocking or restricting the movement of the rod or piston) appears on 1,197 US grants and 1,598 published applications in this corpus.

Search patents in A61M

Granted patents: 1,197
Published applications: 1,598
Assignees: 523
Inventors: 2,383
Latest grant: 6 Oct 2026

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A61M 5/31501: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	2	0
1977	3	0
1978	4	0
1979	3	0
1980	2	0
1981	1	0
1982	0	0
1983	2	0
1984	1	0
1985	2	0
1986	3	0
1987	6	0
1988	2	0
1989	4	0
1990	5	0
1991	5	0
1992	9	0
1993	9	0
1994	19	0
1995	13	0
1996	8	0
1997	10	0
1998	14	0
1999	12	0
2000	14	0
2001	9	2
2002	16	14
2003	13	16
2004	12	30
2005	8	23
2006	9	25
2007	7	33
2008	8	41
2009	11	37
2010	14	35
2011	21	35
2012	25	50
2013	36	69
2014	36	52
2015	47	80
2016	54	87
2017	71	77
2018	63	96
2019	80	79
2020	67	103
2021	66	128
2022	85	116
2023	75	92
2024	73	115
2025	83	87
2026	55	76

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Means for blocking or restricting the movement of the rod or piston

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