US 11,679,177 B2
Polymeric compositions, delivery devices, and methods
John Barry, Buffalo Grove, IL (US); Paul Sanders, Greendale, WI (US); Rahul Singh, Milwaukee, WI (US); Krishnakumarsinh H. Parmar, Lisle, IL (US); Ben Ko, Cincinnati, OH (US); and Stephanie Klunk, Liberty Township, OH (US)
Assigned to Baxter International Inc., Deerfield, IL (US); and Baxter Healthcare SA, Glattpark (CH)
Filed by BAXTER INTERNATIONAL INC., Deerfield, IL (US); and BAXTER HEALTHCARE S.A., Glattpark (CH)
Filed on Jul. 20, 2018, as Appl. No. 16/41,238.
Claims priority of provisional application 62/581,453, filed on Nov. 3, 2017.
Claims priority of provisional application 62/542,615, filed on Aug. 8, 2017.
Prior Publication US 2019/0046683 A1, Feb. 14, 2019
Int. Cl. A61M 35/00 (2006.01); A61B 17/00 (2006.01); A61M 5/20 (2006.01); A61M 5/31 (2006.01); A61L 26/00 (2006.01)
CPC A61L 26/0038 (2013.01) [A61B 17/00491 (2013.01); A61L 26/008 (2013.01); A61L 26/009 (2013.01); A61L 26/0023 (2013.01); A61L 26/0033 (2013.01); A61L 26/0042 (2013.01); A61L 26/0047 (2013.01); A61M 35/003 (2013.01); A61B 2017/00495 (2013.01); A61B 2017/00893 (2013.01); A61B 2017/00898 (2013.01); A61B 2017/00942 (2013.01); A61L 2400/04 (2013.01); A61M 5/2033 (2013.01); A61M 2005/3142 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A snap-fit adapter for mountably converting a hemostatic powder syringe into an intermittent spray powder dispensing syringe delivery device, the hemostatic powder syringe including a barrel having a distal end with a discharge opening, a proximal end with outwardly extending finger flanges, a plunger having a distal end with a stopper slideably received in the barrel and a flanged proximal end with a receptacle, and a hemostatic powder disposed in said barrel between the discharge opening and the stopper, the snap-fit adapter comprising:
a coil spring having a first end and an opposed second end;
a retainer ring including a central opening and an inner peripheral wall having a plurality of clips extending from the peripheral wall and receiving one ring circle of the first end of the spring; and
a cap having a generally cylindrical configuration including a closed top with an inner facing surface and an upstanding peripheral sidewall, a central post projecting from the inner surface, a plurality of projecting members extending inwardly from the inner surface terminating in raised step surfaces disposed between the post and the peripheral sidewall, and a plurality of resilient latch arms having a first end extending from said inner surface and disposed between the projecting members and the peripheral sidewall to an opposed free second end spaced from the first end, each free end including a cam surface and a latch surface facing the inner surface of the cap positioned adjacent to a raised step surface, the cap further including a plurality of clips extending from the peripheral sidewall for receiving one ring circle of the second end of the spring,
whereby the snap fit adapter may be pushed onto the proximal end of the plunger so that the post is received in the receptacle and the proximal end flange is securely retained between the raised step surfaces and the latch surfaces and the retainer ring rests against the finger flanges of the barrel with the spring biasing the cap away from the retainer ring and such that the adapter is reciprocally movable between a compressed position wherein the cap is moved toward the retainer ring and the spring is compressed thereby translating the plunger toward the distal end of the syringe, and a relaxed position where the cap is moved away from the retainer ring and the spring is relaxed thereby translating the plunger toward the proximal end of the syringe, and whereby repeated movement of the cap between the relaxed position and the compressed position is effective to intermittently spray the hemostatic powder from the discharge opening.