US 11,666,707 B2
Disposable syringe set having improved compatibility
Dae Han Choi, Gwangju (KR)
Assigned to SEWOON MEDICAL CO., LTD., Cheonan-si (KR)
Filed by SEWOON MEDICAL CO., LTD., Cheonan-si (KR)
Filed on Jul. 15, 2020, as Appl. No. 16/929,351.
Application 16/929,351 is a continuation of application No. PCT/KR2018/004994, filed on Apr. 30, 2018.
Claims priority of application No. 20-2018-0000485 (KR), filed on Jan. 31, 2018.
Prior Publication US 2020/0345939 A1, Nov. 5, 2020
Int. Cl. A61M 5/31 (2006.01); A61M 5/32 (2006.01); A61M 5/34 (2006.01)
CPC A61M 5/3134 (2013.01) [A61M 5/3293 (2013.01); A61M 5/346 (2013.01); A61M 5/347 (2013.01); A61M 2005/3107 (2013.01); A61M 2205/273 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A syringe set with improved engageability, the syringe set having a structure comprising:
a syringe barrel in which a medicinal fluid inlet of a predetermined length is formed to protrude at one side and a plunger is fitted and coupled to an opening at the other side;
a first screw-coupling portion formed on an outer circumference of the medicinal fluid inlet;
a syringe needle hub in which a syringe needle is provided and which is configured to be fitted and coupled to the outer circumference of the medicinal fluid inlet; and
a second screw-coupling portion formed on an inner circumference of the syringe needle hub and configured to be coupled to the first screw-coupling portion,
wherein the first screw-coupling portion is formed as a female-thread-type coupling portion having a diameter (d) smaller than a reference diameter (D) of the medicinal fluid inlet, configured to be compatible with a non-thread-type syringe needle hub,
the second screw-coupling portion provided on the inner circumference of the syringe needle hub is formed as a male-thread-type coupling portion configured to be coupled to the female-thread-type coupling portion and to be compatible with a non-thread-type medicinal fluid inlet, and
a catching step having an annular shape is formed to protrude a predetermined height from an inner side of the male-thread-type coupling portion formed on the inner circumference of the syringe needle hub,
the female-thread-type coupling portion and the male-thread type coupling portion are coupled to each other in surface contact to prevent leakage of a medicinal fluid through the surface contact,
the catching step is formed by a protrusion protruding radially inwardly from the inner circumference of the syringe needle hub, and the catching step is forcibly fitted into the outer circumference of a distal end portion of the medicinal fluid inlet to prevent leakage of a medicinal fluid,
the catching step is located farther from the syringe barrel than an area which the female-thread-type coupling portion and the male-thread-type coupling portion are coupled to each other in surface contact,
wherein the second screw-coupling portion is formed on a distal end portion of the syringe needle hub and wherein the distal end portion of the syringe needle hub is made of a plastic material softer than that of a proximal end portion of the syringe needle hub.