SYRINGE WITH FINGER FLANGE

• US 20160129193A1
• Filed: 11/11/2015
• Published: 05/12/2016
• Est. Priority Date: 11/11/2014
• Status: Active Grant

• Current Assignee: Schott Pharma Schweiz AG (Carl-Zeiss-Stiftung)
• Original Assignee: Schott Schweiz AG (Carl-Zeiss-Stiftung)
• Inventors: Komann, Christian
• Granted Patent: US 10,195,348 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/3139 Finger grips not integrally formed with the syringe barrel, e.g. using adapter with finger grips
• CPC Class Codes: A61M 2005/3143 Damping means for syringe components executing relative movements, e.g. retarders or attenuators slowing down or timing syringe mechanisms
• CPC Class Codes: A61M 5/3137 Specially designed finger grip means, e.g. for easy manipulation of the syringe rod
• CPC Class Codes: A61M 5/31511 Piston or piston-rod constructions, e.g. connection of piston with piston-rod A61M5/5066 takes precedence

Abstract

A syringe having a finger flange and a finger support is provided. The finger flange includes a radially projecting support surface for a finger and is joined to the syringe body of the syringe at its proximal end. In this case, the finger flange is further designed in one piece and includes at least two finger flange elements, which are movably joined with one another.

Claims

1. A syringe comprising:

a cylindrical syringe body having a distal end, a proximal end, and a cylindrical chamber for uptake of a liquid substance, the proximal end having an opening and at least one projection, the at least one projection protruding radially outward over a circumferential surface of the syringe body; and

a finger flange having at least one support surface for a finger, the finger flange being designed in one piece and comprising a first finger flange element and a second finger flange element, the first and second finger flange elements being movably connected to one another between an open position and a closed position,

wherein, when in the closed position, the finger flange is connected in a friction-fit at least partially to the at least one projection and surrounds the at least one projection so that an axial displacement of the finger flange relative to the syringe body is prevented, and

wherein the finger flange has a plunger guiding recess.

2. The syringe according to claim 1, wherein, when in the closed position, the finger flange is joined in form-fitting manner at least partially with the at least one projection.

3. The syringe according to claim 1, further comprising a stopper in the cylindrical chamber, the stopper being connectable to a plunger through the opening at the proximal end and the plunger guiding recess.

4. The syringe according to claim 3, wherein the finger flange is formed so as to prevent the plunger or the stopper from being pulled out.

5. The syringe according to claim 1, wherein the opening at the proximal end and the plunger guiding recess are configured to receive a plunger with a stopper therethrough.

6. The syringe according to claim 1, wherein the first and the second finger flange elements are rotatably joined together.

7. The syringe according to claim 6, wherein the first and the second finger flange elements are joined together by a joint or hinge.

8. The syringe according to claim 7, wherein the joint or hinge comprises a foil or a film.

9. The syringe according to claim 1, wherein the plunger guiding recess has an inner contour that is formed at least partially precisely diametrically opposite the outer contour of the at least one projection.

10. The syringe according to claim 1, wherein the plunger guiding recess has, at least partially, a dimension when compared with the projection sufficient to form the friction-fit.

11. The syringe according to claim 1, wherein the finger flange is formed, at least partially, by a material having sufficient elasticity to compensate for geometric deviations in the syringe body.

12. The syringe according to claim 11, wherein the material comprises is selected from the group consisting of PP, PE, POM, PBT, PA, PES, TPE, and glass-fiber-reinforced plastics.

13. The syringe according to claim 1, wherein at least one of the first and second finger flange elements surround a peripheral surface of the syringe body in a region that corresponds to an included angle of at most 180°

.

14. The syringe according to claim 1, wherein at least one of the first and second finger flange elements surround a peripheral surface of the syringe body in a region that corresponds to an included angle of less than 180°

.

15. The syringe according to claim 1, wherein at least one of the first and second finger flange elements surround a peripheral surface of the syringe body in a region that corresponds to an included angle of less than 175°

.

16. The syringe according to claim 1, wherein, when in closed position, the first and second finger flange elements are latched together and/or are locked indissolubly.

17. The syringe according to claim 1, wherein, when in closed position, the first and second finger flange elements are locked indissolubly.

18. A finger flange having a recess or passage opening for guiding a plunger that is formed in one piece through it, this flange comprising at least one first and one second finger flange element that are joined together in movable manner, preferably movable by rotation.

19. The finger flange according to claim 18, wherein the at least first and second finger flange elements are joined together by a joint or hinge.

20. The finger flange according to claim 18, wherein finger flange can prevent the plunger and/or a stopper connected to a plunger from being pulled out and/or twisted.