One-way valve system for medical vacuum negative pressure machine

A one-way valve, negative pressure machine technology, applied in the direction of valve, other medical equipment, suction equipment, etc., can solve the problem of affecting the service life of negative pressure pump and battery, the control accuracy of negative pressure value is not high, the one-way valve system gas The problem of low density, etc., achieves the effect of being conducive to the division of labor and cooperation of the assembly line, reducing the overall assembly complexity, and having a compact structure.

Active Publication Date: 2021-10-22
SUZHONG PHARMA GRP MEDICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent application CN112943986A discloses a medical one-way valve, mainly through the deformation of the elastic seal to realize the conduction of the upper and lower chambers, and the seal is prone to aging, resulting in air leakage, etc.
Chinese patent CN213145482U discloses a medical springless one-way valve. The one-way valve is mainly through the deformation and movement of the elastic valve core to realize the conduction of the valve body. It also has the elastic valve core that is prone to aging, resulting in air leakage or Problems such as limited spool movement
The airtightness of the one-way valve system is not high in the actual use of the commonly used medical negative pressure machines on the market. There are four problems in the process of negative pressure wound treatment: 1. The negative pressure pump needs to be started intermittently to pump air, causing the machine to High power consumption; 2. Negative pressure value control accuracy is not high, and fine treatment cannot be realized; 3. Repeatedly starting the device produces loud noise, which affects the patient's rest; 4. Repeatedly starting the device affects the use of negative pressure pump and battery life

Method used

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  • One-way valve system for medical vacuum negative pressure machine
  • One-way valve system for medical vacuum negative pressure machine
  • One-way valve system for medical vacuum negative pressure machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as figure 1 As shown, it is a one-way valve system combined with an umbrella valve 72 and a valve seat 71 applied to a medical vacuum negative pressure machine. Joint 1 can only be opened until the gas channel of the negative pressure pump air outlet 52 passes through the three-way air nozzle 3 .

[0045] Such asfigure 1 with image 3 As shown, the umbrella valve 72 and the umbrella valve seat 71 are combined to form the structure of the umbrella valve 7, and the assembly method of the umbrella valve 7 and the three-ventilator 3 is an interference fit. The outer diameter of the umbrella valve seat 71 is larger than the inner diameter of the three-way nozzle 3, and the difference between the two sizes is within the range of 0.4±0.1mm; the umbrella valve 7 is embedded in the three-way nozzle 3 and is close to the position of the outlet 33 of the three-way nozzle , can ensure that the airtightness of the contact area between the umbrella valve 7 and the three-way no...

Embodiment 2

[0053] Such as Figure 5 As shown, it is basically the same as Embodiment 1, the only difference is that the structure of the one-way valve is a combination of a diaphragm 22, a front valve seat 21 and a rear valve seat 23 applied to a medical vacuum negative pressure machine. The one-way valve structure system is designed so that only when the negative pressure pump 5 is working, the gas passage from the Luer adapter 1 through the three-way air nozzle 3 to the negative pressure pump outlet 52 can be opened.

[0054] Such as Image 6 As shown, the assembly method of the diaphragm 22, the rear valve seat 23 and the front valve seat 21 is an interference fit. The front valve seat 21 and the rear valve seat 23 form a cylindrical area with a diameter of 6.5 mm and a depth of 0.8 mm. A diaphragm 22 is embedded in the cylindrical area. The diaphragm 22 is a cylinder with a height of 0.5 mm and an inner diameter of 6.5 mm. , where the inner diameter of the rear valve seat 23 is lar...

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PUM

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Abstract

The invention discloses a one-way valve system used for a medical vacuum negative pressure machine, the one-way valve system comprises an adapter, a one-way valve, an air nozzle and a negative pressure pump which are connected in sequence, the adapter and the air nozzle, the one-way valve and the air nozzle, and the air nozzle and the negative pressure pump are assembled in an interference fit mode, and the interior of the one-way valve is of an interference fit structure. Flow holes are evenly distributed in the end face. According to the one-way valve system, only one-way circulation of air can be achieved; meanwhile, the external air leakage amount is small, the air tightness of the one-way valve system can be effectively improved, the air tightness of the whole medical vacuum negative pressure machine system is ensured, so that the power consumption of a medical vacuum negative pressure machine is reduced, the control precision is improved, noise is reduced, and better user experience is brought.

Description

technical field [0001] The invention belongs to the technical field of a one-way valve system, and in particular relates to a one-way valve system for a medical vacuum negative pressure machine. Background technique [0002] In recent years, negative pressure wound therapy management, as a closed negative pressure therapy technology, has been widely used in various local tissue wound healing treatments. The application of negative pressure wound therapy management technology ensures the formation of a negative pressure environment on the tissue wound surface and promotes wound healing. [0003] Chinese patent application CN112943986A discloses a medical one-way valve, mainly through the deformation of the elastic seal to realize the conduction of the upper and lower chambers, and the seal is prone to aging, resulting in air leakage and the like. Chinese patent CN213145482U discloses a medical springless one-way valve. The one-way valve is mainly through the deformation and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M39/22A61M1/00
CPCA61M39/223
Inventor 徐明泉唐海涛丁文龙冯路横刘庆成
Owner SUZHONG PHARMA GRP MEDICAL EQUIP CO LTD
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