Retraction structure for safety syringe
A technology for safe syringes and needle holders, applied in the field of retraction devices, can solve problems such as failure of injection needle quality control, retraction or leakage of needle holders, contamination of drugs and blood, etc.
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[0025] Now illustrate the present invention in conjunction with accompanying drawing and embodiment.
[0026] The main component symbols are explained as follows:
[0027] Cylinder body (10), chamber (11), open end (12), rotation limiting piece (13), stopper (14), stopper edge (15), first needle seat (20), rear stopper (21 ), limited rotation seat (22), solid lock groove (23), threaded part (24), O-ring (25), guide rod (26), flange (27), accommodating part (281), front end seat (28), retaining wall (29), fitting space (261), second needle seat (30), seat end (31), shrapnel body (32), embedding part (33), compression space (34), Fitting edge (35), third needle seat (40), fastening part (41), retaining end (42), fitting space (43), guide groove (44), O-ring (45), fitting joint (46), embedded flange (47), front column end (48), push rod (50), thrust end (51), break (52), stop end (53), rubber plug (54 ), stopper (55), buckle end (56), push rod head (57), injection needle (60),...
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