Self-stopping drip chamber for infusion apparatus

Abstract

The utility model provides a self-stopping drip chamber for an infusion apparatus. The self-stopping drip chamber comprises a drip chamber upper sleeve and a bottom shell, the upper portion of the bottom shell and the dropper upper sleeve are connected in a sleeved mode to form a liquid dropping cavity, a cover plate is fixedly arranged in the liquid dropping cavity, a guide column through hole is formed in the center of the cover plate, and liquid medicine through holes allowing liquid medicine to pass through are formed in the periphery of the guide column through hole. A floating body is arranged between the cover plate and the bottom of the bottom shell, a guide column matched with the guide column through hole is arranged in the center of the upper portion of the floating body, the guide column is sleeved with the guide column through hole, a groove is formed in the lower portion of the floating body, a flexible silica gel sheet is installed in the groove, and the floating body can move back and forth between the cover plate and the bottom of the bottom shell according to the buoyancy of liquid medicine. A liquid outlet pipeline is arranged at the bottom of the bottom shell and protrudes inwards out of the bottom of the bottom shell. The liquid stopping device is stable in liquid stopping effect, simple in structure, easy to assemble and capable of achieving automatic assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable medical devices, and particularly relates to a self-stopping liquid drip chamber for an infusion set. Background Art

[0002] At present, the drip chambers of commonly used automatic liquid-stopping infusion sets in clinics are divided into membrane liquid-stopping type and floating plug liquid-stopping type. Among them, for the floating plug liquid-stopping type, that is, there is a liquid-stopping floating plug in the drip chamber. When the liquid level in the drip chamber approaches the liquid outlet hole of the drip chamber, the floating plug sinks and blocks the liquid outlet hole at the lower end of the drip chamber to play a role in stopping the liquid. Since the wall of the drip chamber is relatively thin and easy to deform, for example, in the disposable automatic liquid-stopping infusion set with the publication number CN203954358U, there is a problem that the floating body 36 cannot move smoothly up and down due to the deformation of the drip chamber wall, resulting in the inability to complete liquid stopping; for the disposable self-positioning and self-stopping liquid infusion set with the publication number CN202605451U, there are problems of difficult assembly due to complex structure and premature loss of buoyancy of the floating cover. Summary of the Invention

[0003] In order to solve the technical problems existing in the drip chamber of the existing floating plug liquid-stopping infusion set, the utility model provides a self-stopping liquid drip chamber for an infusion set with a simple structure and easy assembly.

[0004] The self-stopping liquid drip chamber for an infusion set described in the utility model includes an upper sleeve of the drip chamber and a bottom shell; the upper part of the bottom shell is sleeved with the upper sleeve of the dropper to form a liquid dripping cavity, a cover plate is fixedly arranged in the liquid dripping cavity, a guide post through hole is arranged at the center of the cover plate, and a liquid medicine through hole for the liquid medicine to pass through is arranged on the outer periphery of the guide post through hole; a floating body is arranged between the cover plate and the bottom of the bottom shell, a guide post matched with the guide post through hole is arranged at the center of the upper part of the floating body, the guide post is sleeved in the guide post through hole, a groove is arranged at the lower part of the floating body, a flexible silica gel sheet is installed in the groove, and the floating body can move back and forth between the cover plate and the bottom of the bottom shell according to the magnitude of the buoyancy of the liquid medicine; an outlet pipe is arranged on the bottom of the bottom shell, and the outlet pipe protrudes inwards from the bottom of the bottom shell.

[0005] The central part of the floating body is a cavity to reduce the usage amount of the floating body material and lower the cost.

[0006] The upper sleeve of the drip chamber is sleeved on the outer wall of the bottom shell, and a step is arranged on the cover plate, and the outer periphery of the step is supported on the rim of the bottom shell to facilitate assembly.

[0007] Annular lugs are arranged on the outer wall of the bottom shell, and the lower end of the upper sleeve of the drip chamber abuts against the annular lugs to facilitate assembly.

[0008] When the self-stopping liquid drip chamber for an infusion set described in the present utility model is in use, when there is a large amount of liquid medicine in the drip chamber, the floating body is at a higher position between the cover plate and the bottom shell due to the buoyancy of the liquid medicine, and the liquid medicine normally flows out through the liquid outlet pipe; when there is less liquid medicine in the drip chamber, the buoyancy of the liquid medicine acting on the floating body decreases, and due to the self-gravity of the floating body, the floating body drops until the silicone sheet at the lower end of the floating body covers the top of the liquid outlet pipe, achieving the liquid stopping effect. The liquid stopping effect of the present utility model is stable, but the structure is simple, and it is easy to assemble and automate the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is the axial sectional structural schematic diagram of the present utility model;

[0010] Figure 2 is the three-dimensional view of the floating body;

[0011] Figure 3 is the three-dimensional view of the cover plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] The following further describes the specific embodiments of the present utility model with reference to the drawings:

[0013] As Figures 1 to 3 shown, a self-stopping liquid drip chamber for an infusion set described in the present utility model includes a drip chamber upper sleeve 1 and a bottom shell 2; the upper part of the bottom shell 2 is sleeved with the drip chamber upper sleeve 1 to form a liquid dripping cavity, a cover plate 3 is fixedly arranged in the liquid dripping cavity, the drip chamber upper sleeve 1 is sleeved on the outer wall of the bottom shell 2, an annular lug is arranged on the outer wall of the bottom shell 2, and the lower end of the drip chamber upper sleeve 1 abuts against the annular lug 21; a step is arranged on the cover plate 3, and the outer periphery of the step is supported on the mouth edge of the bottom shell 2; a guide post through hole is arranged at the center of the cover plate 3, a liquid medicine through hole 31 for the liquid medicine to pass through is arranged on the outer periphery of the guide post through hole, a floating body 4 with a cavity at the center is arranged between the cover plate 3 and the bottom of the bottom shell 2, a guide post 41 matched with the guide post through hole is arranged at the upper center position of the floating body 4, the guide post 4 is sleeved in the guide post through hole, a groove is arranged at the lower part of the floating body 4, a flexible silicone sheet 6 is installed in the groove, and the floating body 4 can move back and forth between the cover plate 3 and the bottom of the bottom shell 2 according to the magnitude of the buoyancy of the liquid medicine; an outlet pipe 5 is arranged at the bottom of the bottom shell 2, and the outlet pipe 5 protrudes inward from the bottom of the bottom shell 2.

Claims

1. A self-stopping dripping funnel for an infusion set, comprising a dripping funnel upper cover and a bottom shell; wherein the The upper part of the bottom shell is sleeved with the upper sleeve of the dropper to form a dripping cavity, a cover plate is fixedly arranged in the dripping cavity, a guide column through hole is arranged in the center of the cover plate, and a liquid through hole for the liquid medicine to pass through is arranged on the periphery of the guide column through hole; a floating body is arranged between the cover plate and the bottom of the bottom shell, a guide column matching with the guide column through hole is arranged at the upper center position of the floating body, the guide column is sleeved in the guide column through hole, a groove is arranged at the lower part of the floating body, a flexible silicone sheet is installed in the groove, and the floating body can move back and forth between the cover plate and the bottom of the bottom shell according to the buoyancy of the liquid medicine; a liquid outlet pipe is arranged on the bottom of the bottom shell, and the liquid outlet pipe protrudes inwardly from the bottom of the bottom shell.

2. A self-stopping drip funnel for an infusion set according to claim 1, characterized in that The central part of the float is a cavity, so as to reduce the usage of the float material and reduce the cost.

3. The self-stopping drip funnel for an infusion set according to claim 1, characterized in that The upper sleeve of the drip bucket is sleeved on the outer wall of the bottom shell, and the cover plate is provided with a step, and the outer periphery of the step is framed on the edge of the bottom shell.

4. The self-stopping drip funnel for an infusion set according to claim 1, characterized in that An annular lug is arranged on the outer wall of the bottom shell, and the lower end of the drip bucket upper sleeve abuts against the annular lug.

Images