TH83097A - Prefabricated machine for making syringes - Google Patents

Abstract

DC60 syringe consisting of a cylinder (1) with a plunger (7) that is slidable and sealed. Tight to the cylinder In order to provide an automatic self-destructive system Until this syringe can That will be used only once Is rendered unusable after one normal operation, the cylinder (1) has a path that obstructs the cylindrical surface of the inner wall in the form of a groove (10,11) or overhang (29), and The piston (7) has a locking path (17, 20) where it is followed by a groove hook (10, 11) or overhang (29) following the piston retraction (7) to prevent a pullback motion. Next The locking path (17, 20) is arranged on the piston head (7) adjacent to the self-supporting seal cover (15) .The locking path may consist of a pair of spines (17) or a disc. (20) A syringe consisting of a cylinder (1) with a plunger (7) that is fastened and sealed. Tight to the cylinder In order to provide an automatic self-destructive system Until this syringe can To be used once Due to normal operation once, the cylinder (1) has a path blocking the cylindrical surface of the inner wall in the form of a groove (10, 11) or overhang (29). And the piston (7) has an alternate path (17, 20) where the grooves (10, 11) or protrusions (29) are operated according to the piston retraction (7) to prevent pull movement. Go back The locking path (17, 20) is arranged on the piston head (7) adjacent to the self-supporting seal cover (15) .The locking path may consist of a pair of spines (17) or a disc. Gagabad (20)

Claims (8)

Disclaimers (all) that will not appear on the advertisement page: 1. A prefabricated device for making a one-piece syringe plunger (7) for sliding in a syringe pump cylinder (1) and a locking path (17, 20) for attaching a barrier path (10, 11, 29). In the inner wall of the cylinder The finished machine consists of Each two-part casting tool (30) supports the indentation of part of the piston (7) in such a way that the two parts will work together. To make all pistons It has a feature in which each section (30) has an insert (36) that supports the indentation. For locking paths (17, 20) for the respective piston sections, insertion sections (36) are removable in such section (30). 2. The apparatus according to claim 1, where the insert (36) will be installed at the existing dividing line (34) in that part of the apparatus. 3.The apparatus according to claim 1 or 2, where each insertion (36) is attached to the tool part (30) by the insert pin in the alignment opening in the insert (36) and That part of the tool (30) 4.The apparatus according to claim 1 or 2, where each insert (36) is fixed by a compact (37). 5. The machine is completed according to claim 1, where the tool part (30) will be provided with a cavity. For the interpolation (36) 6. One of the Claims of Clause 1 to 5, where each insert (36) consists of one or more discs (38, 39). 7. Inserts for use in prefabricated syringe plungers (7) for sliding in syringe cylinders (1) and locking paths (17, 20) for fastening on Barrier path (10, 11, 29) in the inner wall of the cylinder The finished machine consists of Each two-part casting tool (30) supports the indentation of part of the piston (7) in such a way that the two parts work together to make the entire piston. It has a feature in which the insertion (36) will accommodate the indentation for the locking path (17, 20) of the piston section, respectively, and is removable mounted in the corresponding machine section (30). 8. Insert according to claim 7, where this insert (36) will consist of one or more sheets (38, 39).