A61M 5/322

Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by

Official title: {Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston (devices for protecting guide needles in combination with catheters A61M25/0612)}

A61M5/322 (Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by) appears on 1,438 US grants and 1,334 published applications in this corpus.

Search patents in A61M

Granted patents: 1,438
Published applications: 1,334
Assignees: 481
Inventors: 1,899
Latest grant: 6 Oct 2026

Filings by year

A61M 5/322: granted patents and published applications per publication year
Year	Granted patents	Published applications
1977	1	0
1978	0	0
1979	0	0
1980	0	0
1981	0	0
1982	0	0
1983	0	0
1984	0	0
1985	1	0
1986	1	0
1987	4	0
1988	7	0
1989	18	0
1990	30	0
1991	30	0
1992	34	0
1993	46	0
1994	34	0
1995	35	0
1996	41	0
1997	35	0
1998	45	0
1999	59	0
2000	46	0
2001	35	6
2002	43	43
2003	43	52
2004	39	59
2005	21	39
2006	14	51
2007	17	57
2008	16	46
2009	26	35
2010	23	39
2011	19	29
2012	26	49
2013	28	51
2014	29	55
2015	38	58
2016	45	58
2017	41	45
2018	48	67
2019	57	81
2020	48	64
2021	58	67
2022	52	49
2023	45	57
2024	48	91
2025	76	55
2026	36	31

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

Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by

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