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Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device

A blood return infusion set, self-exhaust technology, applied in the field of medical equipment

Active Publication Date: 2014-05-07
四川普瑞斯生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, there may be another dangerous situation clinically: usually, the height of the patient is lower than the height of the drip funnel, and the normal infusion can be performed under the action of pressure.

Method used

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  • Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device
  • Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device
  • Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as Figure 1 to Figure 4 As shown, during normal infusion, the liquid enters the dripping funnel 20 from the upper infusion conduit 1, then from the valve port 21 at the bottom of the dripping funnel 20 to the lower infusion conduit 13, and then enters the human body through the injection needle.

[0023] During this process, there will always be a certain amount of liquid in the drip funnel 20 to isolate the air (this is also the original intention of designing it), in the present invention, the closed assembly (upper fixing seat 9, upper liquid stop piece 4, lower Fixed seat 12, lower liquid-stop sheet 5 and connecting rod 8) are just immersed in this liquid.

[0024] Since the specific gravity of the closure assembly is the same as that of the liquid, the closure assembly will be in a suspended state, and the valve port 11 will be in a two-way open state, so that there is no hindrance to the normal infusion channel.

[0025] The function of the floating body...

Embodiment 2

[0035] Such as Figure 5 As shown, it is roughly the same as Embodiment 1, the difference is that the shape of the floating body 7 is changed, and its essential principle and method of use are the same.

Embodiment 3

[0037] Such as Figure 6 As shown, it is roughly the same as that of Embodiment 1, except that the contact surfaces of the upper liquid stop piece 4 , the lower liquid stop piece 5 and the lower retaining ring 10 are designed to be planar. In addition, the shape of the pusher 9 is changed from a direct and smooth transition connection with the dripping funnel 20 to a connection with a certain angle, and its essential principle and usage method are the same.

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Abstract

The invention relates to a disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device, which comprises an upper transfusion catheter, a drip chamber and a lower transfusion catheter. The transfusion device is characterized in that a valve port is arranged at the lower part of the drip chamber; an upper retaining ring and a floating body are arranged in the drip chamber, a closing assembly is arranged below the floating body, and the closing assembly comprises a fixed seat, an upper liquid-stop sheet and a lower liquid-stop sheet; a lower retaining ring is arranged on the inner wall of the drip chamber, and the lower retaining ring is arranged between the upper liquid-stop sheet and the lower liquid-stop sheet; the valve port is arranged at the middle part of the lower retaining ring and is respectively matched with the upper liquid-stop sheet and the lower liquid-stop sheet to realize closing; and a push device is arranged between the valve port and the lower transfusion catheter. The disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device has the positive effects that when normal transfusion is conducted, the valve port is opened in two directions and any influence is not caused to the transfusion process; and after liquid is fully transfused, air is prevented from entering a human body and causing medical accidents; when liquid enters the drip chamber again, the push device is only needed to be squeezed and smooth restoration can be realized; and more importantly, when the drip chamber is placed at a low position, the lower liquid-stop sheet is matched with the valve port to realize reverse closing.

Description

technical field [0001] The invention relates to a medical device, in particular to a disposable transfusion device. Background technique [0002] The infusion set is mainly used to deliver liquid medicine to the patient, and its structure mainly includes an upper needle, an upper infusion catheter, a drip funnel, and a lower infusion catheter; when in use, if the liquid above the upper needle is infused and the liquid needs to be replaced , must be in time: before the liquid stored in the dripping funnel drips, let the new liquid enter the dripping funnel, otherwise air will enter the dripping funnel, thus forming air bubbles, which will smoothly enter the lower infusion with the flow of liquid In the catheter, such air bubbles will enter the human body through the needle hole of the injection needle, thereby forming an air embolism, which will threaten the physical and mental health of the patient and even life safety in severe cases. At the same time, the air bubbles gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/40
Inventor 雷冰
Owner 四川普瑞斯生物科技有限公司
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