US 12,083,323 B2
Needle hub and syringe arrangement
Sander Schootstra, Delft (NL); Joost Schootstra, Delft (NL); and Jasper Schootstra, Delft (NL)
Assigned to SJJ Solutions, B.V., Delft (NL)
Appl. No. 17/259,527
Filed by SJJ SOLUTIONS B.V., Delft (NL)
PCT Filed Jul. 10, 2019, PCT No. PCT/NL2019/050430
§ 371(c)(1), (2) Date Jan. 11, 2021,
PCT Pub. No. WO2020/013692, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 2021294 (NL), filed on Jul. 12, 2018.
Prior Publication US 2021/0178078 A1, Jun. 17, 2021
Int. Cl. A61M 5/315 (2006.01); A61M 5/32 (2006.01); A61M 5/34 (2006.01)
CPC A61M 5/31511 (2013.01) [A61M 5/3293 (2013.01); A61M 5/347 (2013.01); A61M 2005/31516 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A needle hub and syringe arrangement, comprising a needle hub and a syringe, the syringe comprising a barrel and a piston, wherein:
the needle hub comprises an axially oriented cannula bore comprising a cannula opening, wherein the cannula opening is surrounded by a substantially flat abutment plane;
the barrel comprises an axially elongated hollow cylinder;
the barrel is arranged as a male part configured to be received by the needle hub as a female part;
the piston comprises at a proximal end an end-plane shaped complementary to at least part of the abutment plane, and the piston is arranged to be translated axially within the barrel between a first position and a second position, wherein
in the first position, a volume arranged for holding a fluid is defined by part of an inner wall of the barrel, the end-plane of the piston, and at least part of the abutment plane; and
in the second position, the end-plane of the piston abuts the abutment plane; and
wherein the end-plane of the piston and the abutment plane are substantially planar and parallel.