Infusion set with a puncture device

Abstract

A kind of puncture ware for infusion of the utility model, including puncture ware body, the body is equipped with air inlet passage, the lateral wall of body is equipped with the interface pipe of body material natural extension, the interface pipe with the air inlet passage intercommunication;The sliding block, limit plate, filter membrane, cover plate are successively installed from inside to outside in the interface pipe;The contact surface when the lower surface of sliding block and interface pipe contact is non-continuous plane contact, the contact surface when the upper surface of sliding block and limit plate contact is continuous plane contact;The limit plate, cover plate are provided with axial through-hole;Limit plate edge is clamped on the wall of interface pipe inward protrusion.The utility model discloses a kind of puncture ware for infusion by using the movement of sliding block to prevent liquid medicine to gush out and soak filter membrane, and realize the air inlet of normal infusion to be smooth, the contact of all parts in interface pipe is taken by puncture, and it is beneficial to the grabbing and installation of automated equipment, and it is beneficial to the automatic assembly production of puncture ware for infusion device.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to an infusion puncture device for preventing air filter membrane from getting wet. Background Technology

[0002] During clinical intravenous infusion, the widespread use of plastic infusion bottles sometimes leads to complications when medical staff use a puncture device to puncture the bottle cap. This can cause the bottle to be crushed, squeezing the medication out of the puncture device's air inlet channel. Consequently, the air filter membrane at the air inlet of the puncture device becomes wetted by the medication, hindering airflow during normal infusion. The infusion puncture device described in patent CN 209422652U solves this problem of filter membrane wetting and has a relatively simple structure. However, in automated manufacturing, the one-way valve used is a duckbill-shaped elastic plastic valve. This valve is quite flexible and difficult for robotic arms to grasp, causing difficulties in automated assembly and hindering the application of automated infusion set assembly. Summary of the Invention

[0003] To address the difficulty of automated assembly of infusion set puncture devices in existing technologies, this invention provides an infusion puncture device that is easy to automate.

[0004] The present invention discloses an infusion puncture device, comprising a puncture device body, wherein the body is provided with an air inlet channel, and an interface tube extending naturally from the body material is provided on the side wall of the body, the interface tube communicating with the air inlet channel; a slider, a limiting plate, a filter membrane, and a cover plate are sequentially installed inside the interface tube from the inside to the outside; the contact surface between the lower surface of the slider and the interface tube is a discontinuous planar contact, and the contact surface between the upper surface of the slider and the limiting plate is a continuous planar contact; the limiting plate and the cover plate are provided with axial through holes; the edge of the limiting plate is engaged with the inwardly protruding wall of the interface tube.

[0005] The outer wall of the slider is provided with one or more axial grooves to facilitate air circulation.

[0006] The cover plate is snapped onto the outer port of the interface tube.

[0007] When using the infusion puncture device described in this utility model, if the medical staff crushes the plastic infusion bottle during operation, the medication will flow from the air inlet channel of the device to the slider. At this time, the slider will move towards the limiting plate. Because the contact surface between the upper surface of the slider and the limiting plate is a continuous plane, the medication will not pass through the through hole of the limiting plate and wet the filter membrane. During normal infusion, as the medication in the bottle is injected into the patient's body, the medication volume decreases, the air pressure inside the infusion bottle decreases, and the slider will slide to the lower surface of the slider and contact the interface tube. Air will enter the infusion bottle from the outer periphery of the slider through the air inlet channel.

[0008] The infusion puncture device described in this utility model uses the movement of a slider to prevent the medicine from gushing out and wetting the filter membrane, and to ensure unobstructed air intake during normal infusion. All components inside the puncture and extraction tube are easy to grasp and install by automated equipment, which facilitates the automated assembly and production of infusion puncture devices. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of section A; Figure 3 This is a perspective view of the slider described in the embodiment; Figure 4 This is a perspective view of the limiting plate described in the embodiment; Figure 5 This is a perspective view of the cover plate described in the embodiment. Detailed Implementation

[0010] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings: like Figures 1 to 5 As shown, the present invention provides an infusion puncture device, comprising a puncture device body 1, an air inlet channel 2, and an interface tube 3 extending naturally from the body material on the side wall of the body 1, the interface tube 3 being connected to the air inlet channel 2; a slider 4, a limiting plate 5, a filter membrane 6, and a cover plate 7 are sequentially installed inside the interface tube 2 from the inside out; the contact surface between the lower surface of the slider 4 and the interface tube 2 is a discontinuous planar contact, while the contact surface between the upper surface of the slider 4 and the limiting plate 5 is a continuous planar contact; two axial grooves are provided on the outer side wall of the slider 4; axial through holes are provided on the limiting plate 5 and the cover plate 7; the edge of the limiting plate 5 is fastened to the inwardly protruding wall of the interface tube 3, and the cover plate 7 is fastened to the outer port of the interface tube 2.

Claims

1. An infusion puncture device, comprising a puncture device body, the body having an air inlet channel, and an interface tube naturally extending from the body material on the side wall of the body, the interface tube communicating with the air inlet channel; characterized in that... The interface tube is installed with a slider, a limiting plate, a filter membrane, and a cover plate in sequence from the inside to the outside. The contact surface between the lower surface of the slider and the interface tube is a discontinuous planar contact, while the contact surface between the upper surface of the slider and the limiting plate is a continuous planar contact. The limiting plate and the cover plate are provided with axial through holes. The edge of the limiting plate is fastened to the inwardly protruding wall of the interface tube.

2. The infusion puncture device according to claim 1, characterized in that: The outer wall of the slider has one or more axial grooves.

3. The infusion puncture device according to claim 1, characterized in that: The cover plate is fitted onto the outer port of the interface pipe.

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