US 12,133,973 B2
System and method for safety syringe
Alan E. Shluzas, San Carlos, CA (US); Stephen H. Diaz, Palo Alto, CA (US); John F. Shanley, Emerald Hills, CA (US); Scott Segelke, Mountain View, CA (US); and John Merhige, Sudbury, MA (US)
Assigned to Credence MedSystems, Inc., Menlo Park, CA (US)
Filed by Credence Medsystems, Inc., Menlo Park, CA (US)
Filed on Mar. 29, 2021, as Appl. No. 17/215,097.
Application 17/215,097 is a continuation of application No. 15/801,304, filed on Nov. 1, 2017, granted, now 10,960,144.
Claims priority of provisional application 62/542,230, filed on Aug. 7, 2017.
Claims priority of provisional application 62/480,276, filed on Mar. 31, 2017.
Claims priority of provisional application 62/431,382, filed on Dec. 7, 2016.
Claims priority of provisional application 62/416,102, filed on Nov. 1, 2016.
Prior Publication US 2021/0283342 A1, Sep. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 5/32 (2006.01); A61M 5/178 (2006.01); A61M 5/20 (2006.01); A61M 5/24 (2006.01); A61M 5/28 (2006.01); A61M 5/31 (2006.01); A61M 5/315 (2006.01); A61J 1/20 (2006.01)
CPC A61M 5/3221 (2013.01) [A61M 5/178 (2013.01); A61M 5/2066 (2013.01); A61M 5/2448 (2013.01); A61M 5/28 (2013.01); A61M 5/284 (2013.01); A61M 5/3137 (2013.01); A61M 5/3148 (2013.01); A61M 5/31501 (2013.01); A61M 5/31511 (2013.01); A61M 5/31513 (2013.01); A61M 5/3202 (2013.01); A61M 5/322 (2013.01); A61M 5/3234 (2013.01); A61J 1/2006 (2015.05); A61J 1/2096 (2013.01); A61M 2005/3223 (2013.01); A61M 2005/323 (2013.01); A61M 2005/3231 (2013.01); A61M 5/3232 (2013.01); A61M 2005/3241 (2013.01); A61M 5/3293 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system for injecting, comprising:
a syringe body defining a proximal opening and a distal needle interface;
a plunger member defining a plunger interior and configured to be manually manipulated to insert a stopper member relative to the syringe body, the plunger member including
a needle retention feature disposed in the plunger interior,
an energy-storage member disposed in the plunger interior, and
an energy-storage member latching member disposed in the plunger interior; and
a needle hub assembly coupled to the distal needle interface of the syringe body, the needle hub assembly including
a needle having an annular recess and a needle proximal end feature comprising an elongate needle proximal portion, a collar portion, and a proximal tip,
a hub, and
a needle latching member configured to interact with the annular recess in the needle to removably couple the needle to the hub,
wherein the needle is at least partially retractable into the plunger interior upon manipulation of the plunger member relative to the syringe body to transform the energy-storage member latching member from a latched state to an unlatched state,
wherein the elongate needle proximal portion has a first cross-sectional diameter,
wherein the collar portion has a second cross-sectional diameter, and
wherein the second cross-sectional diameter is greater than the first cross-sectional diameter,
wherein the collar portion comprises an uninterrupted annular distally facing surface,
wherein the needle proximal end feature includes a proximal opening and a hollow interior, and
wherein the needle comprises a tubular member coupled to the proximal end feature such that an interior of the tubular member is in fluid communication with the hollow interior of the needle proximal end feature, and
wherein the tubular member includes a side opening and the annular recess.