A medical hematology injection syringe

Abstract

The invention provides a medical hematology injection syringe. The invention comprises a sleeve, a push rod installed in the sleeve, and a rubber plug installed at the end of the push rod. The end of the sleeve is provided with an injection head, and a first sleeve is detachably installed in the sleeve. A first sealing ring is provided between the first sleeve and the sleeve, the end of the first sleeve close to the injection head is provided with a first chamfer, and the outer wall of the rubber plug is in contact with the inside of the sleeve. A gap is left between the cylinder walls, and a rubber protruding ring is integrally provided on the outer wall of the rubber plug, and the rubber protruding ring is in contact with the inner cylinder wall of the sleeve. The effective sealing contact area between the rubber stopper, the rubber convex ring and the first sleeve can be adjusted according to the actual pumping force required for the corresponding injection, which helps to relieve the sore hands of medical staff after long-term operation. The difficulty is effectively reduced.

Description

technical field [0001] The invention relates to a medical injection device, in particular to a medical hematology injection syringe. Background technique [0002] Existing syringe structures such as a Chinese utility model patent with a notification number of CN204033938U are a syringe, its structure mainly includes a sleeve, and a needle plug is installed in the sleeve, and the needle plug includes a push rod, a sealing ring, a handle, a sealing ring and a handle They are respectively located at the two ends of the push rod, and the sealing ring is installed in the sleeve. By applying force to the handle, the push rod can push the sealing ring to perform sealing sliding along the inside of the sleeve. [0003] The above-mentioned syringe realizes injection or suction by pushing and pulling the needle plug, and the actual action point of injection or suction mainly depends on the sealing effect between the sealing ring and the inner wall of the sleeve. The outer circumferen...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned syringe realizes injection or suction by pushing and pulling the needle plug, and the actual action point of injection or suction mainly depends on the sealing effect between the sealing ring and the inner wall of the sleeve. The outer circumference of the traditional sealing ring The side wall will be in full contact with the inner cylinder wall of the sleeve. Although this setting can effectively improve the sealing performance between the sealing ring and the sleeve, in actual practice, due to the effective contact between the sealing ring and the sleeve The large area leads to a large push and pull force actually required for the push rod. After long-term operation, the hands of the medical staff will be sore and the operation is difficult.

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