Injection cylinder for subcutaneous vaccination - comprises first hollow cylindrical tube in which is fitted telescopically second tube with reduced dia.

摘要

The first tube (6) is attached at one end (16) with the injection cylinder (2) and the second tube (7) with its end (16) facing the injection cylinder can be pushed into the first tube against a spring (18) in the first tube. Both tubes (6, 7) have a stage and step-formation at their vaccination-side ends, whereby the second tube (7) in the rest position projects with its vaccination-side end (8) over that (9) of the first tube, covering completely the injection cannula. The spring (18) is of the cylindrical screw type. USE/ADVANTAGE - In veterinary practise, partic. for the mass vaccination of animals, an ancillary piece for the syringe which ensures that a "subcutaneous tent" is formed in the hide of the animal.