Medical reciprocating delivery pump

Abstract

The invention discloses a medical reciprocating delivery pump. The medical reciprocating delivery pump comprises a double-acting cylinder, a cylinder seat, a linear driving module and a base; the double-acting cylinder comprises a cylinder sleeve and a piston rod; the cylinder sleeve is arranged on the cylinder seat; the two ends of the cylinder sleeve are each provided with a discharging valve and a sucking valve; the piston rod is coaxially arranged in the cylinder sleeve in a penetrating mode; the piston rod is fixedly sleeved with a piston; the piston divides the cylinder sleeve into two cavities; the piston is arranged in the cylinder sleeve in matching and sliding modes; stop blocks are symmetrically arranged at the two ends of the piston rod correspondingly; the linear driving module comprises a rotor and a stator; the stator is fixedly arranged on the base; the rotor is arranged on the stator in reciprocating and sliding modes; and the two ends, in the sliding direction, of therotor make contact with the inner side surfaces of the stop blocks correspondingly. According to the medical reciprocating delivery pump provided by the invention, pressure flow is adjustable, control is simple, and the delivery pump has the positive significance on promoting medical progress and reducing cost of outpatient visit for patients as a compact-structure and low-cost operation water jet scalpel.

Description

technical field [0001] The invention belongs to the field of medical equipment, in particular to a medical reciprocating delivery pump. Background technique [0002] Medical delivery pumps are common medical equipment used to transport gases or fluids. The design requirements are reliable and reasonable, and the structure and assembly are simple to facilitate the disinfection of the medical environment. For different use occasions, the pressure and flow requirements of medical delivery pumps are also different. [0003] Take the surgical waterjet as an example. The biggest feature of the medical waterjet is the selective cutting and fine separation of tissue structures with different strength and toughness, so that the specific tissue can be protected to the greatest extent, and it has the advantages of clear vision and less bleeding. , At the same time, because the water jet does not generate heat, it will not cause thermal damage to surrounding tissues caused by other sur...

AI Technical Summary

Problems solved by technology

[0004] The pump (US8251679B2) in ERBEJET2 developed by ERBE Company in Germany is a sterile single-acting plunger pump with a pressure range of 0.1-8MPa. Its structure is complex, the pressure accuracy is low, and the production cost and disposable consumables are high.

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