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Disposable automatic liquid stopping infusion set and manufacturing method thereof

An infusion set, a disposable technology, applied in the direction of hypodermic injection devices, devices introduced into the body, etc., can solve the problems of low safety, increased floating body weight, and inability to seal, so as to improve safety, good sealing effect, and improve reliability. sexual effect

Inactive Publication Date: 2013-07-10
张东平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But also there is following weak point in using disposable infusion set: at present, disposable infusion set does not have automatic sealing effect when exchanging infusion bottle and medicinal liquid filling, if nursing staff is not careful at this moment, will make air Enter the patient's vein, and the air will bring extremely unsafe factors to the patient after entering the vein, and also bring more intense work to the nursing staff who already have a large workload
[0008] The main problems in the above-mentioned patented technology are: 1. The seal between the floating body and the liquid inlet channel raised at the lower part of the dropping funnel is sealed by a sealing diaphragm, which is a one-time seal, and the floating body cooperates with the liquid inlet channel The precision of the seal is very high, and the existing production process is difficult to meet the requirements of complete sealing, resulting in low reliability and low safety of the seal
2. There is a cavity between the sealing diaphragm and the concave part. During infusion, the liquid is easy to enter the cavity, increasing the weight of the floating body, which may cause the liquid inlet channel of the dropping funnel to be closed in advance, or the floating body cannot work normally.
3. Since there is a cavity between the sealing diaphragm and the concave part, and the sealing diaphragm is relatively thin, the protruding end of the liquid medicine outlet is easy to pierce the sealing diaphragm, resulting in failure to seal

Method used

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  • Disposable automatic liquid stopping infusion set and manufacturing method thereof
  • Disposable automatic liquid stopping infusion set and manufacturing method thereof
  • Disposable automatic liquid stopping infusion set and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A disposable automatic stop liquid infusion device, including a bottle insertion needle, a drip funnel, a hose, a liquid medicine filter, an intravenous infusion needle and a safety mechanism, a flow regulator for controlling the flow is placed outside the hose, the safety The mechanism includes a housing 1 and a floating body 2 located in the housing 1. The housing 1 includes at least one liquid medicine outlet. The connecting piece can also be a connecting end integrally formed with the casing, the connecting end has a through hole 4 for the liquid medicine to flow through, the connecting end 3 protrudes from the liquid medicine outlet portion of the casing 1, and the floating body 2 A concave portion is provided below, and a sealing cap 5 is arranged in the concave portion, and the sealing cap 5 includes a cap top 6 and an annular cap body 7, one end of the annular cap body 7 is closed by the cap top 6, and the other end is an open end , the opening direction of the ...

Embodiment 2

[0054] The structure of this embodiment is basically the same as the above embodiment, the difference is that: the cap body 7 of the sealing cap 5 is straight cylindrical, and the diameters of the cap body 7 and cap top 6 are larger than the diameter of the connecting end.

[0055] The preferred implementation of this embodiment is that the thickness of the cap top 6 is less than the thickness of the cap body, and the thickness of the cap top 6 is 0.06mm. This thickness makes the cap top 6 itself more deformable, that is, ensures the sealing The reliability of this method ensures that the top of the hat 6 will not be pierced.

[0056] In this embodiment, the casing of the safety mechanism and the casing of the dropping funnel are different casings, that is, the safety mechanism and the dropping funnel are arranged separately.

[0057] After adopting the present invention, the floating body 2 in the housing 1 rises and falls with the increase or decrease of the medicinal liquid...

Embodiment 3

[0059] The structure of this embodiment is basically the same as that of the above-mentioned embodiment, the difference being that: an annular groove is formed on the end surface of the sealing end of the floating body 2, and the opening end of the annular cap body of the sealing cap 5 is bent and embedded in the annular groove. , the part of the sealing cap bent on the lower surface of the floating body 2 forms a first seal with the bottom of the shell 1, and the top of the cap 6 cooperates with the through hole 4 to form a second seal.

[0060] The preferred implementation of this embodiment is that the thickness of the crown 6 is less than the thickness of the cap body 7, and the thickness of the crown 6 is 0.07mm, which makes the deformability of the crown 6 itself better, that is, ensures The reliability of the seal ensures that the top of the hat 6 will not be pierced.

[0061] After adopting the present invention, the floating body 2 in the casing 1 rises and falls with...

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Abstract

The invention discloses a disposable automatic liquid stopping infusion set and a manufacturing method thereof. The infusion set comprises a safety mechanism, the safety mechanism comprises a shell and a buoy located in the shell, the shell comprises at least one liquid medicine outlet, the inner lower end of the shell is a connecting end, the connecting end is provided with a through hole, liquid medicine flows through the through hole, the connecting end is protruded out of the liquid medicine outlets of the shell, a U-shaped portion is arranged below the buoy, a sealing cap is arranged in the U-shaped portion and comprises a cap top and an annular cap body, one end of the annular cap body is sealed via the cap top while the other end of the annular cap body is an opening end, the opening direction of the annular cap body is opposite to an inwards concave direction of the U-shaped portion, and the diameter of an opening of the annular cap body is larger than that of the connecting end. The disposable automatic liquid stopping infusion set aims to realize that automatic sealing of an infusion pipeline can be ensured when infusion bottles are replaced and infusion is about to be finished by the aid of multiple times of sealing, on the basis that air is assuredly prevented from entering the body of a patient, reliability of sealing of the infusion pipeline is improved, and safety is further enhanced.

Description

technical field [0001] The present invention relates to an infusion device used for intravenous infusion for clinical patients in the field of medical and health care, in particular to a disposable automatic stop liquid infusion device which can automatically seal the infusion pipeline during intravenous infusion to prevent air from entering the patient's body and its preparation method. Background technique [0002] When carrying out intravenous infusion to patient at present, widely use disposable infusion set, prevent the cross-infection between patients like this and have played positive effect. But also there is following weak point in using disposable infusion set: at present, disposable infusion set does not have automatic sealing effect when exchanging infusion bottle and medicinal liquid filling, if nursing staff is not careful at this moment, will make air Enter the patient's vein, and these airs will bring extremely unsafe factors to the patient after entering th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/14A61M5/40
Inventor 谢忠均陈荣
Owner 张东平
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