Floater for drip chamber of infusion apparatus capable of automatically stopping liquid

Abstract

The invention provides a floater for a drip chamber of a self-liquid-stopping infusion apparatus, which comprises a cylindrical body, and a plugging surface for plugging a liquid outlet of the drip chamber is arranged at the lower part or the lower part of the body; and a spiral blade is arranged on the side surface of the body. According to the drip chamber, the spiral blade is arranged on the side face of the body, when liquid medicine drips from the liquid inlet dropper of the drip chamber and flows to the spiral blade on the floater, the floater can rotate, and the liquid medicine in the drip chamber can float smoothly when reaching the theoretical liquid level height.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical and health devices, and is a conventional medical supply used during human body infusion, especially a novel medical supply that can automatically close the needle after the liquid medicine is completely dripped. Background Art

[0002] When infusing liquid medicine into the human body, it is strictly prohibited for air to enter the vein. In reality, in order to prevent this phenomenon from occurring, doctors, companions and even patients are all very careful, but accidents are still inevitable due to negligence. Therefore, people hope to have a device that can automatically stop the liquid when the liquid medicine is completely dripped. In the infusion set with buoyancy self-weight type automatic needle closing device with the publication number CN201094783Y and the infusion set with self-stopping liquid drip funnel that is easy to assemble with the application number CN2024218646243, a float is arranged in the drip funnel to block the liquid outlet of the drip funnel to achieve the purpose of self-stopping liquid. However, in actual infusion applications, after dripping liquid medicine into the drip funnel, the float in the drip funnel sometimes cannot float smoothly at the theoretical liquid level height, which affects the popularization and application of the self-stopping liquid infusion set adopting this technology. Summary of the Invention

[0003] To solve the problem that the float in the drip funnel of the existing self-stopping liquid infusion set cannot float smoothly, the present invention provides a float for the drip funnel of a self-stopping liquid infusion set.

[0004] The float for the drip funnel of the self-stopping liquid infusion set described in the present invention includes a cylindrical body, and a sealing surface for blocking the liquid outlet of the drip funnel is arranged at the lower part or below the body; a spiral blade is arranged on the side surface of the body.

[0005] The sealing surface is a plane, a spherical surface or a conical surface.

[0006] The sealing surface is made of an elastic material.

[0007] A guide post is arranged at the central position of the upper part of the float, and the guide post is matched with a guide post through hole arranged on a cover plate placed in the drip funnel, and the guide post through hole is located at the center of the cover plate.

[0008] During infusion, the initial state is that the liquid outlet of the drip chamber is sealed by the sealing surface. After dropping the medicinal liquid into the drip chamber, the pressure of the medicinal liquid in the drip chamber is greater than the human venous pressure, that is, there is a certain degree of vacuum in the infusion tube below the drip chamber. And the medicinal liquid in the liquid film between the liquid outlet of the drip chamber and the sealing surface has surface tension, which may be the reason why the float sometimes cannot float smoothly according to the theoretical liquid level height. By using the float described in the present invention, since the spiral blades are arranged on the side of its body, when the medicinal liquid drips from the liquid inlet dropper of the drip chamber and flows onto the spiral blades of the float, the float will rotate. The rotation of the float destroys the surface tension of the liquid film between the liquid outlet of the drip chamber and the sealing surface, and can also relatively smoothly drain the medicinal liquid in the drip chamber together with the infusion tube below the drip chamber, reducing the vacuum in the infusion tube below the drip chamber. In this way, the float for the drip chamber of the self-stopping liquid infusion device described in the present invention can achieve smooth floating when the medicinal liquid in the drip chamber reaches the theoretical liquid level height during infusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic structural diagram of the application state of Embodiment 1 of the present invention.

[0010] Figure 2 It is a perspective view of Embodiment 1 of the present invention.

[0011] Figure 3 It is a front view of Embodiment 1 of the present invention.

[0012] Figure 4 It is a front view of Embodiment 2 of the present invention.

[0013] Figure 5 It is a front view of Embodiment 3 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] The following further describes the specific embodiments of the present invention with reference to the accompanying drawings: Embodiment

[0015] As Figures 1 - 3 shown, in this embodiment, a float for the drip chamber of a self-stopping liquid infusion device described in the present invention includes a cylindrical body 1. A sealing surface 2 made of an elastic material for sealing the liquid outlet 5 of the drip chamber is provided at the lower part of the body 1; spiral blades 3 are provided on the side surface of the body 1; the sealing surface 2 is a flat surface, a spherical surface or a conical surface. A guide post 4 is provided at the central position of the upper part of the float, and the guide post 4 is matched with a guide post through hole provided on a cover plate 6 placed in the drip chamber, and the guide post through hole is located at the center of the cover plate 6. Embodiment

[0016] As Figure 4 shown, the difference between this embodiment and Embodiment 1 is that the sealing surface 2 is located below the cylindrical body 1, and the sealing surface is a spherical surface. Embodiment

[0017] The difference between this embodiment and Embodiment 1 is that the blocking surface 2 is located below the cylindrical body 1, and the blocking surface is a conical surface.

Claims

1. A float for a drip bucket of a self-stopping liquid infusion device, comprising a cylindrical body, wherein a sealing surface for sealing a liquid outlet of the drip bucket is provided at or below the body; wherein: The side surface of the body is provided with spiral blades.

2. A float for a drip bucket of a self-stopping liquid infusion device according to claim 1, characterized in that The blocking surface is a plane, a spherical surface or a conical surface.

3. A float for a drip bucket of a self-stopping liquid infusion device according to claim 1, characterized in that The sealing surface is made of an elastic material.

4. A float for a drip bucket of a self-stopping liquid infusion device according to claim 1, characterized in that A guide post is provided at the center of the upper part of the float, and the guide post cooperates with a guide post through hole provided on the cover plate placed in the drip bucket, and the guide post through hole is located at the center of the cover plate.

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