One-piece syringe
First Claim
1. A syringe structure or the like comprising:
- a frame having an outer surface and an inner surface, a front part, a back part and a hinge part coupling the front and back parts;
a barrel extending away from the outer surface of the front part, the barrel having a distal end, a proximal end and a bore wall defining bore between the distal and proximal ends, the barrel defining a bore opening at the proximal end and an ejection opening at the distal end;
a plunger extending away from the inner surface of the back part, the plunger including a gasket at an outer end sized for mating engagement within said bore, said plunger being bendable along its length to permit the outer end to enter into and move along the bore when the frame is folded over at the hinge part with the inner surface portions of the front and back parts being opposed; and
the frame, barrel and plunger being a one-piece, molded structure;
whereby forcing the opposed inner surface portions towards one another drives the plunger down the bore of the barrel towards the distal end to force a fluid, contained within the bore between the gasket and the ejection opening, through the ejection opening.
1 Assignment
0 Petitions
Accused Products
Abstract
A one-piece syringe (2) includes an elongate frame (4) having front and back parts (6, 8) coupled by a hinge (10). A hollow barrel (12) extends from the front part and away from an outer surface (22). A plunger (14) having gaskets (54, 56) at its outer end (32) extends from the back part away from the inner surface (50). The frame is folded over at the hinge and the outer end of the plunger is inserted into the bore of the barrel. The plunger has a bendable region (62) along its length which permits the plunger to move properly along the bore during use. Withdrawal of the outer end of the plunger from the bore is prevented by the engagement of wedge shaped teeth (64) extending laterally from the plunger which engage and score the bore wall (70). After use, the barrel and plunger are pivoted to a disposal position generally parallel to the front part of the frame. This causes the frangible connection (26) between the plunger and the frame to break further preventing the reuse of the syringe. The frame is then pivoted back upon itself and latched together (92, 94) to capture the needle (36), barrel and plunger between the front and back parts for safe disposal. The frame can include slide type fasteners (128-134) to permit the syringes to be temporarily held together as a bandolier (126). A self-dispensing, lockable package (138) of syringes can be used to dispense the syringes one at a time.
-
Citations
39 Claims
-
1. A syringe structure or the like comprising:
-
a frame having an outer surface and an inner surface, a front part, a back part and a hinge part coupling the front and back parts; a barrel extending away from the outer surface of the front part, the barrel having a distal end, a proximal end and a bore wall defining bore between the distal and proximal ends, the barrel defining a bore opening at the proximal end and an ejection opening at the distal end; a plunger extending away from the inner surface of the back part, the plunger including a gasket at an outer end sized for mating engagement within said bore, said plunger being bendable along its length to permit the outer end to enter into and move along the bore when the frame is folded over at the hinge part with the inner surface portions of the front and back parts being opposed; and the frame, barrel and plunger being a one-piece, molded structure; whereby forcing the opposed inner surface portions towards one another drives the plunger down the bore of the barrel towards the distal end to force a fluid, contained within the bore between the gasket and the ejection opening, through the ejection opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
-
Specification