Infusion air supply device
By designing an infusion gas replenishment device, the infusion system is automatically replenished using sterile and clean gas, which solves the problem that existing infusion sets cannot block viruses, microorganisms and toxic gases, thus achieving the safety and effectiveness of the infusion system. The product has a simple structure and is easy to manufacture.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-25
- Publication Date
- 2026-04-10
AI Technical Summary
Existing disposable infusion sets (air-inlet gravity infusion type) cannot effectively prevent viruses, microorganisms and toxic gases from entering the infusion system, leading to adverse infusion events.
An infusion gas replenishment device was designed, consisting of a soft gas storage bag, a filter membrane, a puncture needle, a protective sleeve, and tubing. It utilizes sterile clean gas to automatically enter the infusion system under atmospheric pressure, replacing traditional gas inlet devices and achieving closed gravity infusion.
It effectively prevents viruses, microorganisms, and toxic gases from entering the infusion system, reduces the occurrence of adverse infusion events, ensures the purity of the medication, and is easy to process and safe and effective.
Smart Images
Figure CN121819086A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the category of infusion and blood transfusion devices in medical devices, and is used to supplement sterile and clean gas into the infusion system during infusion. Background Technology
[0002] Disposable infusion sets (air-inlet gravity infusion type) are Class III medical devices whose safety and effectiveness must be strictly controlled. They are characterized by widespread use, high risk, and numerous complaints and reports. During use, they may cause or potentially cause adverse events such as chills, high fever, nausea, and vomiting. Current disposable infusion sets (air-inlet gravity infusion type) utilize the principle that the internal pressure of the infusion system, created by atmospheric pressure and hydrostatic pressure, is higher than the venous pressure in the human body. To prevent microorganisms from entering the infusion system, the air intake device has an air filter. Viruses and microorganisms range in size from 20nm to 10um. The 0.5um pore size of the air filter on the air intake device cannot effectively block all viruses, microorganisms, and toxic gases from the medical environment from entering the infusion system. The introduction of these gases can contaminate the medication, thus causing adverse infusion events. Summary of the Invention
[0003] The purpose of this invention is to provide an infusion gas replenishment device consisting of a flexible gas reservoir, a filter membrane, a puncture needle, a protective sleeve, tubing, and clamps. The flexible gas reservoir is filled with sterile, clean gas and can replace the gas inlet device and separate gas inlet device on disposable infusion sets (gravity-feeding infusion type). Before infusion, medical personnel must close the gas inlet device on the disposable infusion set (gravity-feeding infusion type) and then insert the puncture needle of the infusion gas replenishment device into the infusion bottle. During infusion, the clamps on the tubing of the infusion gas replenishment device are opened, and it can be used normally. When the gas pressure in the infusion bottle is lower than atmospheric pressure, the sterile, clean gas in the flexible gas reservoir will automatically enter the infusion system to replenish it. The entire process achieves closed-loop normal gravity infusion.
[0004] To achieve the above objectives, the technical solution adopted in this invention is as follows: The tubing is equipped with clamps, one end of which is connected to a soft gas reservoir filled with sterile, clean gas. The other end is connected to a puncture needle, which has a protective sleeve and a filter membrane inside the needle hub. Before infusion, medical personnel must close the air inlet device on the disposable infusion set (air-inlet gravity infusion type), and then insert the puncture needle from the infusion gas replenishment device into the infusion bottle. During infusion, the clamps on the tubing of the infusion gas replenishment device are opened. When the gas pressure inside the infusion bottle is lower than atmospheric pressure, the sterile, clean gas from the soft gas reservoir will automatically enter the infusion system to replenish the pressure. The entire process achieves closed-loop normal gravity infusion.
[0005] The soft gas storage bag of the infusion gas replenishment device is filled with sterile clean gas. When the gas pressure in the infusion bottle is lower than the atmospheric pressure, the sterile clean gas in the soft gas storage bag will automatically enter the infusion system through the pipeline and filter membrane to replenish the system under the action of atmospheric pressure. The whole process realizes closed normal gravity infusion.
[0006] Compared to the air intake devices on disposable infusion sets (gravity-feed infusion type) and separate air intake devices, the infusion gas replenishment device provided by this invention replenishes the infusion system with sterile, clean gas. With the air intake devices on disposable infusion sets (gravity-feed infusion type) and separate air intake devices, the air entering the infusion system is medical ambient air containing viruses and microorganisms smaller than 0.5µm and toxic gases. This air can contaminate the medication, thereby causing adverse infusion events. Attached Figure Description
[0007] Figure 1 This is a schematic diagram of the structure of the infusion and gas replenishment device of the present invention.
[0008] In the diagram: 1-Puncture needle; 2-Needle hub; 3-Tube; 4-Clamp; 5-Filter membrane; 6-Soft gas storage bag; 7-Sterile clean gas; 8-Protective cover. Implementation
[0009] Figure 1 This is a schematic diagram of the structure of the infusion and gas replenishment device of the present invention. The tubing 3 of the infusion and gas replenishment device of the present invention has a clamp 4, one end of which is connected to a soft gas storage bag 6, which is filled with sterile clean gas 7, and the other end is connected to a puncture needle 1, which has a protective sleeve 8 and a filter membrane 5 in the needle seat 2.
[0010] When using the infusion gas-supplement device of this invention, before infusion, medical staff must turn off the air inlet device on the disposable infusion set (air-inlet gravity infusion type), and then insert the puncture needle 1 of the infusion gas-supplement device into the infusion bottle. During infusion, the clamp 4 on the tubing 3 of the infusion gas-supplement device is opened. When the gas pressure inside the infusion bottle is lower than atmospheric pressure, under atmospheric pressure, sterile clean gas 7 from the soft gas storage bag 6 will enter the infusion system through the tubing 3 and the filter membrane 5 to replenish the infusion. The entire process achieves closed-loop normal gravity infusion.
[0011] The infusion gas replenishment device provided by this invention replenishes the infusion system with sterile, clean gas. In contrast, the air intake devices on disposable infusion sets (gravity-feed infusion type) and separate air intake devices introduce medical ambient air containing viruses, microorganisms, and toxic gases smaller than 0.5µm into the infusion system. This invention's infusion gas replenishment device replaces the air intake devices on disposable infusion sets (gravity-feed infusion type) and separate air intake devices, reducing the occurrence of adverse infusion events. This invention's infusion gas replenishment device is easy to manufacture, has a simple structure, and is safe and effective.
Claims
1. An infusion and gas replenishment device, characterized in that: The pipeline (3) has a clamp (4), one end of which is connected to a soft gas storage bag (6), and the other end is connected to a puncture needle (1).
2. The infusion and gas replenishment device according to claim 1, characterized in that: The soft gas storage bag (6) is filled with sterile clean gas (7).
3. The infusion and gas replenishment device according to claim 1, characterized in that: The needle hub (2) of the puncture needle (1) is equipped with a filter membrane (5).