Pump valve assembly of urinary catheterization kit

Abstract

The invention discloses a pump valve assembly of a urinary catheterization kit. The pump valve assembly comprises a main body part; the main body part comprises a pump shell and a valve seat which isintegrally formed at the lower end of the pump shell; an inlet joint and an outlet joint are integrally formed on the side surface of the valve seat; a cylindrical valve core made of rubber is rotatably mounted in the valve seat; a valve cover is hermetically connected to the lower end of the valve seat; the upper end of the valve cover is abutted against or close to a limiting head; a piston mounting pipe is integrally formed at the lower end of the center of the valve cover; a piston is slidably mounted in the piston mounting pipe; a cover body is fixedly connected with the lower end of thepiston mounting pipe; a spring is mounted between the piston and the cover body; a centrifugal water wheel is rotatably mounted in the pump shell; a pump cover made of aluminum alloy is hermetically connected with the upper end of the pump shell; and a liquid inlet joint and a liquid outlet joint are integrally formed on the side surface of the pump shell. The pump valve assembly has functions ofisolating urine and conducting pressure through arrangement of the piston, so that an air pressure sensor does not contact the urine in any form, and cross infection is prevented.

Description

technical field [0001] The invention belongs to the field of medical instruments, in particular to the field of urological instruments. Background technique [0002] The invention patent application with document number CN103301514A discloses a multifunctional indwelling catheterization device, which mainly realizes the function of automatic pressure-sensitive urination, and collects urination parameters through sensors, and has an early warning function, which has certain practicability. However, electronic drainage Liquid valves, flow sensors, etc. are directly connected to the urination pipeline. If all parts are disposable, the overall cost of the catheterization device will be too high, which will significantly increase the economic burden of the patient; if the parts are reused, there will be a risk of cross-infection. [0003] The Chinese patent with document number CN205515936U discloses a urinary catheter that can prevent urine leakage and can be treated by heat. It...

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Problems solved by technology

However, there are several problems in the technical solution of this patent that make this solution difficult to implement. One is that the structure of the three-layer casing has difficulties in assembling and sealing methods at multiple connection positions. The other is that the heating wire is arranged on the outer tube. The outer wall (accurately speaking, it should be embedded in the tube wall of the outer tube) also has difficulties in processing. Specifically, since one end of the catheter is inserted into the urethra, the heating wire must be inserted from the outer tube of the outer tube at both ends. In order to make the heating wire conduction, the outer tube and the heating wire need to be separately processed and formed

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