Infusion apparatus capable of automatically exhausting and storing water

Abstract

The utility model discloses an infusion apparatus capable of automatically exhausting air and storing water. The infusion apparatus comprises a self-exhausting drip chamber, an exhaust hole is formed in a dropper of the self-exhaust drip chamber; the exhaust hole is connected with a hollow exhaust plug; the outer wall of the exhaust plug is hermetically and fixedly connected with the inner wall of the exhaust hole; one end of the venting plug extends into the dropper inner cavity, and the end face of the venting plug is connected with a hydrophobic film in a sealed mode so that air in the dropper inner cavity can be exhausted from the venting plug. According to the utility model, automatic exhaust and automatic water storage can be realized.

Description

Technical Field

[0001] This utility model relates to an infusion set that can automatically vent air and automatically store water. Background Technology

[0002] An infusion set is a commonly used medical device. After the medication bottle is inserted into the infusion set, before puncture, the set must be filled with medication and free of air bubbles to prevent air bubbles from being introduced into the body and causing vascular embolism and death. This process is called air removal.

[0003] Currently, infusion sets used in medical institutions do not have automatic air release and water filling capabilities, requiring medical staff to manually release air. This involves the medical staff inverting the drip chamber or pinching the lower end of the tubing with one hand while squeezing the drip chamber flat with the other and releasing it, using the elasticity of the drip chamber to draw in the medication. This is repeated several times until the medication fills to about half the height of the drip chamber. Then, the drip chamber is upright or the pinched tubing is released to allow the medication to flow into the lower tubing until it overflows from the tip of the infusion needle. Finally, the flow regulator is locked to complete the air release process. Manual air release has drawbacks: the process is time-consuming, taking up about one-third of the entire infusion operation time. In situations with many patients and limited time, residual air may occur; the operation requires high skill and is not conducive to beginners, potentially leading to significant waste of medication or residual air due to operational errors or lack of proficiency; drip chambers made of new materials (such as TPE infusion sets) are relatively hard, making it difficult for nurses to squeeze the medication fully in one go, and nurses with less strength may not be able to operate them at all.

[0004] To overcome the shortcomings of existing technologies, this technical field aims to develop an infusion set capable of automatic air venting. Some systems employ a slit-type air venting rod, utilizing surface tension to achieve automatic air venting and automatic water filling of the first bottle of liquid, but this still cannot completely eliminate air bubbles. Recently, a system has been developed that completely separates air through a precision filter and a specially designed stop-fluid membrane, solving the problem of hazards caused by air bubbles entering the body. However, because the liquid in the drip chamber cannot be refilled to half its capacity after the drip chamber is empty, the drip chamber needs to be squeezed again to achieve secondary air venting, thus failing to truly achieve automatic air venting and water filling.

[0005] There is an urgent need in this field for an infusion set that can automatically vent air and store water. Utility Model Content

[0006] The purpose of this invention is to provide an infusion set that can automatically vent air and automatically store water, so as to overcome the defects of the prior art.

[0007] To solve the above-mentioned technical problems, the present invention provides an infusion set capable of automatic venting and automatic water storage, comprising a self-venting drip chamber; the drip tube of the self-venting drip chamber is provided with a vent hole; the vent hole is connected to a hollow vent plug; the outer wall of the vent plug is sealed and fixedly connected to the inner wall of the vent hole; one end of the vent plug extends into the inner cavity of the drip tube, and its end face is sealed with a hydrophobic membrane so that air in the inner cavity of the drip tube can be discharged from the vent plug.

[0008] One end of the vent plug extends into the inner cavity of the dropper, and its end face is 1 mm away from the inner wall of the vent hole of the dropper.

[0009] The liquid outlet of the self-venting dripping bucket is also connected to a liquid-stopping filter, which is equipped with an exhaust window.

[0010] The bottom of the self-venting dripping funnel is provided with a dripping funnel cover, which is sealed to the bottom of the dripping funnel and connected to the infusion tubing. A hydrophilic drug-resistant membrane is sealed inside the dripping funnel cover.

[0011] The exhaust plug is cylindrical.

[0012] The self-venting dripping funnel and the liquid-stopping filter are connected via an infusion hose.

[0013] The dropper has an outward protrusion at the vent hole, and a protruding edge at the outer end of the vent plug, with the protruding edge of the vent plug fixed to the protrusion.

[0014] The structure of this invention features a self-venting dripping funnel with a vent hole in the dropper. This vent hole is connected to a hollow vent plug, whose outer wall is sealed to the inner wall of the vent hole. One end of the vent plug extends into the inner cavity of the dropper, and its end face is sealed with a hydrophobic membrane. During the dripping process, the hydrophobic membrane on the end face of the vent plug will not form a liquid seal (if the vent plug does not extend into the inner cavity of the dropper, the hydrophobic membrane will form a liquid seal and cannot vent), ensuring that air inside the dropper can always be automatically discharged from the vent plug, thus achieving secondary venting. This solves the problem of automatic venting. Furthermore, the invention also includes a liquid-stopping filter or a bottom cover with a liquid-stopping hydrophilic membrane sealed inside the bottom cover. After the medicine in the dropper is emptied, it can automatically refill to half the height of the dripping funnel, thus truly achieving automatic venting and automatic water filling.

[0015] This utility model has a simple and compact structure and can achieve automatic venting and automatic water storage countless times. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the self-venting dripping bucket of this utility model. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0018] like Figure 1 As shown, the infusion set of this utility model, which is capable of automatic venting and automatic water storage, includes a self-venting drip chamber 1.

[0019] The dropper of a self-venting dripper has a vent hole. The vent hole is connected to a hollow vent plug 2. The outer wall of the vent plug is sealed and fixed to the inner wall of the vent hole. The dropper is generally made of transparent material.

[0020] One end of the vent plug extends into the inner cavity of the dropper, and its end face is sealed with a hydrophobic membrane 3 to allow air in the inner cavity of the dropper to escape from the vent plug. The vent plug is preferably cylindrical. The hydrophobic membrane is a material of existing technology.

[0021] Preferably, one end of the vent plug extends into the inner cavity of the dropper, and its end face is 1 mm away from the inner wall of the vent hole of the dropper.

[0022] As a further improvement, the outlet end of the self-venting dripping bucket is also connected to a stop-flow medicine filter, which is equipped with a vent. The self-venting dripping bucket and the stop-flow medicine filter are connected via an infusion tubing. The stop-flow medicine filter structure is existing technology.

[0023] As a further improvement, the self-venting dripping funnel is equipped with a lower dripping funnel cover, which is sealed to the bottom of the funnel and connected to the lower infusion tubing. A hydrophilic anti-drip film is sealed inside the lower dripping funnel cover. The hydrophilic anti-drip film serves to stop the drip.

[0024] For ease of manufacture, the dropper has a protrusion 5 on the outward side of the vent hole, and a protrusion 4 on the outer end of the vent plug. The protrusion of the vent plug is fixed to the protrusion.

Claims

1. An infusion set capable of automatic venting and automatic water storage, characterized in that: It includes a self-venting dripping bucket (1); the dripping tube of the self-venting dripping bucket is provided with a vent hole; the vent hole is connected to a hollow vent plug (2); the outer wall of the vent plug is sealed and fixedly connected to the inner wall of the vent hole; one end of the vent plug extends into the inner cavity of the dripping tube, and its end face is sealed with a hydrophobic membrane (3) so that the air in the inner cavity of the dripping tube can be discharged from the vent plug.

2. The infusion set capable of automatic venting and automatic water storage according to claim 1, characterized in that: One end of the vent plug extends into the inner cavity of the dropper, and its end face is 1 mm away from the inner wall of the vent hole of the dropper.

3. The infusion set capable of automatic venting and automatic water storage according to claim 1, characterized in that: The liquid outlet of the self-venting dripping bucket is also connected to a liquid-stopping filter, which is equipped with an exhaust window.

4. The infusion set capable of automatic venting and automatic water storage according to claim 1, characterized in that: The bottom of the self-venting dripping funnel is equipped with a dripping funnel cover, which is sealed to the bottom of the dripping funnel and connected to the lower infusion tubing. A hydrophilic drug film with liquid-stopping properties is sealed inside the dripping funnel cover.

5. The infusion set capable of automatic venting and automatic water storage according to claim 1, characterized in that: The exhaust plug is cylindrical.

6. The infusion set capable of automatic venting and automatic water storage according to claim 3, characterized in that: The self-venting dripping funnel and the liquid-stopping filter are connected via an infusion hose.

7. The infusion set capable of automatic venting and automatic water storage according to claim 1, characterized in that: The dropper has an outward protrusion (5) at the vent hole and a protrusion (4) at the outer end of the vent plug, with the protrusion of the vent plug fixed to the protrusion.

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