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Negative suction device capable of preventing backflow

An anti-reflux and negative suction technology, applied in suction devices, hypodermic injection devices, etc., can solve problems such as hidden safety hazards, drainage and reflux, etc., and achieve the effects of avoiding reflux, simple operation, and simple structure.

Inactive Publication Date: 2020-05-15
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

We know that in the prior art, drainage under a negative pressure environment is likely to cause reflux, which has a great safety hazard in medicine. Therefore, a negative suction device that can prevent reflux is needed

Method used

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  • Negative suction device capable of preventing backflow
  • Negative suction device capable of preventing backflow
  • Negative suction device capable of preventing backflow

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] see Figure 1~2 , the present invention provides a technical solution: a negative suction device capable of preventing reflux, comprising a negative pressure column 3, the upper and lower sides of the right end surface of the negative pressure column 3 are respectively connected with an upper air intake pipe 10 and a lower air intake pipe 1 , the upper air intake pipe 10 and the right end of the lower air intake pipe 1 are connected with an air outlet p...

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Abstract

The present invention discloses a negative suction device capable of preventing backflow. The negative suction device capable of preventing backflow comprises a negative pressure vertical cylinder, anupper air inlet pipe and a lower air inlet pipe are respectively connected with an upper side and a lower side of a right end surface of the negative pressure vertical cylinder, right ends of the upper air inlet pipe and the lower air inlet pipe are connected with an air outlet pipe, and backflow-preventing devices are arranged on the upper air inlet pipe and the lower air inlet pipe. The negative suction device capable of preventing backflow is simple in structure, and clear and understandable in structure, sealing plates in the backflow-preventing devices in the air inlet pipes can play sealing and blocking functions and can effectively avoid solution or gas from backflow into the air inlet pipes, so that a vertical movement of a piston has negative pressure material drawing and material feeding functions. The negative suction device capable of preventing backflow is efficient, can effectively avoid backflow, and is easy in operation and worthy of promotion.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a negative suction device capable of preventing reflux. Background technique [0002] In the prior art, irrigation and drainage are one of the most basic operations in surgical operations. We know that the most commonly used and main way of drainage is negative pressure drainage, and flushing usually provides a certain positive pressure for flushing. We know that in the prior art, drainage under a negative pressure environment is likely to cause reflux, which has a great safety hazard in medicine. Therefore, a negative suction device that can prevent reflux is needed. Contents of the invention [0003] The object of the present invention is to provide a negative suction device capable of preventing reflux, so as to solve the problems raised in the above-mentioned background technology. [0004] To achieve the above object, the present invention provides the followin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/00
CPCA61M1/81
Inventor 张福洋盛艳丽傅倩如薛宁
Owner XUZHOU NORMAL UNIVERSITY
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