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Medical filter

A filter and filter membrane technology, applied in the field of medical devices, can solve the problems of poor exhaust air of the filter, endanger the life of patients, and form air emboli, reduce assembly accuracy and complex assembly procedures, save welding processes, Guaranteed sealing effect

Inactive Publication Date: 2018-01-16
徐文敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The filter with this structure has the following defects: 1. The filter is not exhausted smoothly, and a gas-liquid mixture will be generated. It takes time and effort for the nurse to pop the air bubbles. patient life

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0014] Example: such as Figure 1-4 As shown, a medical filter has protrusions 7 arranged at intervals on the edge of the inner surface of the liquid inlet housing 1, protrusions 7 are also arranged at intervals on the edge of the liquid outlet housing 2, and the liquid inlet housing 1 and the liquid outlet The shells 2 are buckled relative to each other, and the protrusions 7 on the liquid inlet shell 1 and the liquid outlet shell 2 are buckled correspondingly. Intermittent welding joints 8 are formed between the protrusions 7, and the intermittent welding joints 8 are welded. The shell 1 and the liquid outlet shell 2 form an integrated structure, and a space for accommodating the liquid medicine is formed between the two. To fix the two shells, only need to weld the intermittent welding joint, which reduces the welding stress and makes the welding surface smooth , improve the welding yield, avoid the occurrence of leakage accidents on the side of the housing, and reduce ener...

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Abstract

The invention provides a medical filter, and belongs to the field of medical instruments. A fluid inlet pipe of a liquid inlet shell is communicated with a liquid inlet hole formed in the bottom of the liquid inlet shell; a liquid discharge pipe of a liquid discharge shell is communicated with a liquid outlet hole formed in the upper end of the liquid discharge shell; an exhaust hole is formed inthe upper end of the liquid inlet shell and is welded with an exhaust membrane; a hydrophilic filtration membrane is arranged on the inner surface of the liquid outlet shell. The medical filter has the advantages that liquid enters from the lower side and is discharged from the upper side, and bubbles are pushed to the exhaust hole on the upper side of the shell by a gradually rising liquid and are discharged; the liquid outlet hole does not produce bubbles, the hydrophilic filtration membrane is sealed and fixed through a soft annular elastomer, the welding process is eliminated, assembly precision and complex assembly procedures are reduced, the convex ridge has no bubble or dead corner and exhausts sensitively, welding is conducted intermittently, the welding stress is reduced, side leakage of the shell is avoided, the automatic stopping of a drug liquid is achieved through the hydrophilic filtration membrane, and automatic liquid stopping is achieved.

Description

technical field [0001] The invention belongs to medical equipment, in particular to a medical filter. Background technique [0002] Intravenous infusion is a common clinical method for treating diseases. During infusion, insoluble particles will be contained in the liquid medicine and the infusion set itself. At present, filters are generally used in clinical practice to filter them to prevent insoluble particles from entering the human body and causing medical accidents. However, the general structure of the filter currently used clinically is: after the two shells are fastened together, the periphery of the shell is welded, the filter membrane is installed in the shell and welded and fixed with the shell, and the upper end of the shell is provided with a liquid inlet and an exhaust port. mouth, the lower end is provided with a liquid outlet. The filter with this structure has the following defects: 1. The filter is not exhausted smoothly, and a gas-liquid mixture will be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/38
Inventor 徐文敏
Owner 徐文敏
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