Stable high-pressure medical pump

A medical pump, high-pressure technology, applied in the field of medical devices, to achieve the effect of reducing usage, good cutting performance, and overcoming the problem of pressure fluctuations

Active Publication Date: 2017-01-04
HUIZHOU HYDRO CARESYS MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of high-pressure pump has a reversing cycle due to the piston movement, and the output water pressure also forms periodic fluctuations, so it is often necessary to install an additional high-pressure accumulator to stabilize the pressure.

Method used

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Embodiment Construction

[0014] The present invention provides a stable high-pressure medical pump, which includes a pump body 1, a liquid inlet pipe 2 and a liquid outlet pipe 3. The pump body 1 is provided with a first piston cylinder 11 and a second piston cylinder 12, which are connected with the first piston cylinder. The inner cavity of a piston cylinder 11 is connected with a first liquid inlet channel 111 and a first liquid discharge channel 112, and the inner cavity of the second piston cylinder 12 is connected with a second liquid inlet channel 121 and a second row of A liquid passage 122, the liquid inlet pipe 2 is respectively connected to the first liquid inlet passage 111 and the second liquid inlet passage 121 and a one-way valve is installed on the first liquid inlet passage 111 and the second liquid inlet passage 121, so A switching valve is provided on the pump body 1, and the liquid outlet pipe 3 can communicate with the first liquid discharge channel 112 or the second liquid dischar...

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Abstract

The invention discloses a stable high-pressure medical pump. The stable high-pressure medical pump comprises a pump body, a liquid inlet pipe and a liquid outlet pipe; a first piston cylinder and a second piston cylinder are arranged in the pump body; a first liquid inlet channel and a first liquid discharge channel communicates with an inner cavity of the first piston cylinder; a second liquid inlet channel and a second liquid discharge channel communicates with an inner cavity of the second piston cylinder; the liquid inlet pipe is respectively connected with the first liquid inlet channel and the second liquid inlet channel, and is provided with one-way valves on the first liquid inlet channel and the second liquid inlet channel; a switching valve is arranged on the pump body; the liquid outlet pipe can communicate with the first liquid discharge channel or the second liquid discharge channel through the switching valve; and pistons and piston rods are respectively mounted in the first piston cylinder and the second piston cylinder. The stable high-pressure medical pump comprises two piston cylinders, uses an asynchronous continuous pressing mode of double pistons to realize reciprocating motions of the double pistons, matches with the one-way valves and the switching valve to realize no-gap continuous high pressure, overcomes the fluctuation problem of a water jet scalpel, and keeps excellent cutting performance of the water jet scalpel under constant pressure.

Description

technical field [0001] The invention is used in the technical field of medical equipment, and in particular relates to a stable high-pressure medical pump. Background technique [0002] In water cutting technology, high-pressure pump is one of the core parts of medical water jet design, and commonly used standard parts such as plunger pump are often used. In the existing medical high-pressure pump, when the liquid enters the plunger pump for pressurization, one end enters the water through the one-way water inlet valve, and after pressurization, it is pushed out from the other end, and enters the high-pressure pipeline through the water outlet one-way valve, and the reciprocating movement of the piston , forming a continuous high-pressure water flow. But this kind of high-pressure pump has a reversing cycle due to the piston movement, and the output water flow pressure also forms periodic fluctuations, so it is often necessary to install a high-pressure accumulator to stabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B23/06A61B17/3203
Inventor 罗凤玲
Owner HUIZHOU HYDRO CARESYS MEDICAL CO LTD
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