US 10,376,655 B2
Syringe
Holger Pupke, Koenigseggwald (DE); and Tilman Roedle, Wolfegg (DE)
Assigned to ARZNEIMITTEL GMBH APOTHEKER VETTER & CO. RAVENSBURG, Ravensburg (DE)
Appl. No. 13/146,163
Filed by Holger Pupke, Koenigseggwald (DE); and Tilman Roedle, Wolfegg (DE)
PCT Filed Jan. 22, 2010, PCT No. PCT/EP2010/000357
§ 371(c)(1), (2), (4) Date Jul. 25, 2011,
PCT Pub. No. WO2010/084006, PCT Pub. Date Jul. 29, 2010.
Claims priority of application No. 10 2009 007 250 (DE), filed on Jan. 26, 2009.
Prior Publication US 2011/0282295 A1, Nov. 17, 2011
Int. Cl. A61M 5/34 (2006.01); A61M 5/31 (2006.01)
CPC A61M 5/344 (2013.01) [A61M 5/347 (2013.01); A61M 5/3134 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A syringe comprising:
a syringe cylinder with a distal end configured as a syringe cone, the distal end having a region set back in a radial direction forming an edge that extends in a circumferential direction, the edge defining a first chamfer;
an attachment piece having a clamping region having a distal edge, the distal edge of the clamping region defining a second chamfer;
the clamping region of the attachment piece extends proximally from the second chamfer and includes a plurality of recesses and a plurality of jaws defining a plurality of contact regions for engaging the syringe cone, each adjacent jaw spaced from one another in a circumferential direction of the attachment piece by one of the plurality of recesses, wherein the plurality of contact regions form a cylindrically shaped central recess such that the cylindrically shaped central recess extends in a direction parallel to a longitudinal axis of the attachment piece, the clamping region being generally cylindrical;
a first mechanism for holding the attachment piece to the syringe cylinder defined by a first surface area contact between the first chamfer and the second chamfer; and
a second mechanism for holding the attachment piece to the syringe cylinder defined by a second surface area contact between the plurality of contact regions and the syringe cylinder,
wherein each recess includes a first portion that extends radially from the central recess and a second portion communicating with the first portion,
wherein the second portion of each recess is oblong in shape in the circumferential direction of the attachment piece:
wherein each jaw of the plurality of jaws has a first arm and a second arm, the first arm of each jaw extending from a remainder of the respective jaw clockwise in the circumferential direction of the attachment piece and the second arm of each jaw extending from the remainder of the respective jaw counterclockwise in the circumferential direction of the attachment piece, and
wherein each recess is partly defined by the first arm of each respective jaw and by the second arm of each respective adjacent jaw, such that the first portion of each recess is located between the first arm of each respective jaw and the second arm of each respective adjacent jaw, and wherein each adjacent jaw is circumferentially spaced from one another by the first portion of each respective recess such that the clamping region is circumferentially discontinuous when engaging the syringe cone.