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Self-recommended pneumoperitoneum instrument with pneumoperitoneum flow control

A technology of air flow and pneumoperitoneum, which is applied in the field of pneumoperitoneum and can solve problems such as affecting the effect of surgical images.

Inactive Publication Date: 2019-02-01
HEFEI DVL ELECTRON +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the intra-abdominal pressure is balanced, there will be vibration at the moment when the switch valve is opened and closed, which will seriously affect the visual effect during the operation

Method used

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  • Self-recommended pneumoperitoneum instrument with pneumoperitoneum flow control
  • Self-recommended pneumoperitoneum instrument with pneumoperitoneum flow control
  • Self-recommended pneumoperitoneum instrument with pneumoperitoneum flow control

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Embodiment Construction

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0016] In a first aspect, the present invention provides a self-recommended insufflation instrument with insufflation flow control, such as figure 1 As shown, the insufflation instrument includes a central control unit, a proportional control valve, a switch solenoid valve, an air flow sensor and an air pressure sensor, wherein:

[0017] The prop...

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Abstract

The invention provides a self-recommended pneumoperitoneum instrument with pneumoperitoneum flow control. The pneumoperitoneum instrument includes a central control unit, a ratio control valve, a switching solenoid valve, a gas flow sensor and a gas pressure sensor. The ratio control valve, switching solenoid valve, gas flow sensor and gas pressure sensor are arranged on a gas supply pipeline andare connected to the central control unit. The central control unit is used for obtaining a gas flow parameter and a gas pressure parameter and outputting a PWM signal according to the gas flow parameter and a preset standard gas flow parameter when the gas pressure parameter is less than a preset first gas pressure parameter, wherein the PWM signal is used for adjusting switching time ratio of the control valve so as to adjust the gas flow parameter in the gas supply pipeline. The central control unit is also used for closing the ratio control valve and the switching solenoid valve when the gas pressure parameter is greater than or equal to the first gas pressure parameter. The self-recommended pneumoperitoneum instrument with pneumoperitoneum flow control can improve the visual effect.

Description

technical field [0001] The invention relates to the technical field of insufflation instruments, in particular to a self-recommended insufflation instrument with insufflation flow control. Background technique [0002] In minimally invasive surgery, CO2 gas is injected to expand the patient's body cavity, providing ideal visual conditions and sufficient operating space for endoscopic surgery. The traditional method of CO2 gas injection is to use the switch valve to adjust the gas flow and control the air pressure of the cavity. The main working principle is: collect the air pressure of the abdominal cavity, compare the collected air pressure value with the preset value, if it is greater than the predetermined value, Just close the switch valve, if it is less than the predetermined value, just open the switch valve, so as to achieve the purpose of controlling flow and pressure. [0003] When the intra-abdominal pressure is balanced, there will be vibration at the moment when...

Claims

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Application Information

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IPC IPC(8): A61B17/02
CPCA61B17/02
Inventor 丁帅黄辉杨善林傅强张林樊松
Owner HEFEI DVL ELECTRON
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