US 12,133,973 B2Granted

System and method for safety syringe

AssigneeCredence Medsystems, Inc.

InventorsAlan E. Shluzas, Stephen H. Diaz, John F. Shanley, Scott Segelke, John Merhige

Life of this patent

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Abstract

A system for injecting includes a syringe body defining a proximal opening and a distal needle interface. The system also includes 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. The plunger member includes 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. The system further includes a needle hub assembly coupled to the distal needle interface of the syringe body. The needle assembly includes a needle having a needle proximal end feature, a hub, and a needle latching member configured to couple the needle to the hub. The needle is at least partially retractable into plunger interior. The needle proximal end feature includes an annular distally facing surface.

Claims18

Dependent claims

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.

15 more elements

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 comprises a shoulder configured to increase a distal force required to push the stopper member over the needle.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/215,097Filed 29 Mar 2021 · continuation
Priority: 1 Nov 2016
Published: US 2021/0283342 A116 Sep 2021
Granted: 5 Nov 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification24 codes

A61M 5/3221
Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston: constructional features thereof, e.g. to improve…
A61M 5/178
Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning…:…
A61M 5/2066
Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically: comprising means for…
A61M 5/2448
Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or cartridges, e.g. automatic: comprising means for…

Family

Application62/416,102Us provisional application · filed 1 Nov 2016
Application62/431,382Us provisional application · filed 7 Dec 2016
Application62/480,276Us provisional application · filed 31 Mar 2017
Application62/542,230Us provisional application · filed 7 Aug 2017
Application15/801,304Parent of this continuation · filed 1 Nov 2017
US 2021/0283342 A1Pre-grant publication · published 16 Sep 2021
US 10,960,144 B2Parent of this continuation
US 2018/0133408 A1Published application
US 12,133,973 B2This patent

From the US filing history. Foreign family members aren’t listed.