An infusion detector

Abstract

This utility model discloses an infusion detector, which includes a base and a pressure plate hinged to the base via a hinge shaft. The base has a pressing end and a holding end disposed opposite each other. The hinge shaft is located between the pressing end and the holding end. The holding end has a recessed cavity for accommodating an infusion tube, and an electrode sheet is disposed within the cavity wall. This application improves detection reliability by making the cavity recessed and laser-engraving the electrode sheet into the cavity using LDS technology. The electrode sheet covers the area where the cavity contacts the infusion tube, increasing the contact area and improving detection reliability.

Description

Technical Field

[0001] This utility model relates to an infusion detector. Background Technology

[0002] Most infusion detectors on the market work by clamping the infusion tube and observing the change in capacitance value of a capacitive sensor caused by the presence of liquid inside the tube, thus determining whether there is liquid inside the infusion tube.

[0003] The current electrode manufacturing process for infusion monitor capacitors is as follows:

[0004] Plating copper directly on the PCB board as the capacitor electrode has a small impact on the capacitance value due to the planar nature of the PCB. Therefore, within the same area, the presence or absence of liquid in the infusion tube does not significantly affect the accuracy of the detection and judgment.

[0005] In some infusion detectors, the copper electrodes on the PCB are directly exposed and in contact with the infusion tubing. This exposure of the PCB can lead to the risk of medication leaking out and corroding the copper electrodes during the infusion process, or even entering the detector and causing a short circuit and damage to the equipment. Utility Model Content

[0006] The main objective of this invention is to provide an infusion detector that addresses the aforementioned technical problems.

[0007] To achieve the above objectives, the present invention proposes an infusion detector comprising a base and a pressure plate hinged to the base via a hinge shaft. The base has a pressing end and a holding end disposed opposite to each other. The hinge shaft is located between the pressing end and the holding end. The holding end has a recessed cavity for accommodating an infusion tube. An electrode sheet is disposed within the cavity and covers the cavity wall.

[0008] In one embodiment, the infusion detector further includes a control circuit board disposed within the base, the control circuit board being connected to the electrode pads via wires.

[0009] In one embodiment, the end face of the pressing end has a downwardly curved pressing surface, and the pressing plate has a pressing gap with the pressing surface when not subjected to external force.

[0010] In one embodiment, the pressure plate has a crimping protrusion on its side wall facing the base. The crimping protrusion is located in the cavity and, together with the electrode plate, is clamped onto the infusion tube.

[0011] In one embodiment, the top of the cavity has an opening, and the crimping protrusion can extend into the cavity from the opening and contact the infusion tube when not subjected to external force.

[0012] In one embodiment, the cross-section of the cavity is a semi-circular groove.

[0013] In one embodiment, the base is made of LDS plastic.

[0014] In this invention, the infusion detector includes a base and a pressure plate hinged to the base via a hinge shaft. The base has a pressing end and a holding end disposed opposite to each other. The hinge shaft is located between the pressing end and the holding end. The holding end has a recessed cavity for accommodating the infusion tube, and an electrode sheet is disposed within the cavity wall. Therefore, in this invention, by setting the cavity to a recessed shape and laser-engraving the electrode sheet into the cavity using LDS technology, the electrode sheet covers the portion of the cavity that contacts the infusion tube, increasing the contact area with the infusion tube and improving detection reliability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the infusion detector according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of the infusion detector according to an embodiment of the present invention.

[0018] Explanation of reference numerals: 10, base; 11, pressing end; 12, holding end; 13, cavity; 14, hinge shaft; 15, pressing surface; 16, pressing gap; 20, pressure plate; 21, pressing protrusion; 30, infusion tube; 40, electrode plate.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] This invention provides an infusion detector.

[0025] like Figure 1-2 As shown, the infusion detector provided in this embodiment of the present invention includes a base 10 and a pressure plate 20 hinged to the base 10 via a hinge shaft 14. The base 10 has a pressing end 11 and a holding end 12 disposed opposite to each other. The hinge shaft 14 is located between the pressing end 11 and the holding end 12. The holding end 12 has a recessed cavity 13 for accommodating an infusion tube 30. An electrode sheet 40 is provided inside the cavity 13 and covers the wall surface of the cavity 13.

[0026] In this embodiment, the base 10 is made of LDS plastic, and the electrode plates 40 are laser-engraved to the outside of the housing to prevent liquid from flowing into the interior and protect the internal electrical components.

[0027] Meanwhile, the electrode pads 40 cover the area where the cavity 13 and the infusion tube 30 contact, increasing the contact area and improving detection reliability. In this application, the electrode pads 40 can fully contact the infusion tube 30 outside the housing, which can improve the accuracy of detection by reducing the significant change in capacitance value due to changes in the presence or absence of liquid inside the infusion tube 30.

[0028] It is understood that the infusion detector also includes a control circuit board disposed within the base 10, and the control circuit board is connected to the electrode plate 40 via wires. In this application, the specific detection principles of the control circuit board and the electrode plate 40 can be referenced from existing technologies, and will not be elaborated upon further here.

[0029] Please refer to Figure 2 The end face of the pressing end 11 has a downwardly curved pressing surface 15, and the pressing plate 20 has a pressing gap 16 between itself and the pressing surface 15 when not subjected to external force. In this embodiment, through the action of the hinge shaft 14, the pressing plate 20 is able to contact and connect with the infusion tube 30 from the opening at the top of the cavity 13 through the pressing protrusion 21 provided on the side wall of the base 10 when not subjected to pressing external force.

[0030] When disassembly is required, external force (generally referring to the user's fingers pinching the pressing end 11 and the pressure plate 20) can be used to pry up the front end of the pressure plate 20 (the end near the holding end 12), causing the crimping protrusion 21 to disengage from the opening. At this time, the infusion tube 30 can be detached from the cavity 13. Correspondingly, the infusion detector can also be installed by pressing and clamping, which will not be described in detail.

[0031] In the above embodiment, the cross-section of the cavity 13 is a semi-circular groove, and the electrode sheet 40 is laser-plated by laser engraving, which can increase the area of ​​the electrode sheet 40, improve the capacitance value, and better cover the infusion tube 30, thereby improving the detection stability.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. An infusion detector, characterized in that, The infusion detector includes a base (10) and a pressure plate (20) hinged to the base (10) via a hinge shaft (14). The base (10) has a pressing end (11) and a holding end (12) arranged opposite to each other. The hinge shaft (14) is located between the pressing end (11) and the holding end (12). The holding end (12) has a recessed cavity (13) for accommodating an infusion tube (30). An electrode sheet (40) is provided inside the cavity (13) and covers the wall of the cavity (13).

2. The infusion detector according to claim 1, characterized in that, The infusion detector also includes a control circuit board disposed in the base (10), which is connected to the electrode plate (40) via wires.

3. The infusion detector according to claim 1, characterized in that, The end face of the pressing end (11) has a pressing surface (15) that is inclined downwardly curved, and the pressing plate (20) has a pressing gap (16) between itself and the pressing surface (15) when it is not subjected to external force.

4. The infusion detector according to claim 3, characterized in that, The pressure plate (20) has a crimping protrusion (21) on its side wall facing the base (10). The crimping protrusion (21) is located in the cavity (13) and is clamped together with the electrode plate (40) on the infusion tube (30).

5. The infusion detector according to claim 4, characterized in that, The top of the cavity (13) has an opening, and the crimping protrusion (21) can extend into the cavity (13) and contact the infusion tube (30) when not subjected to external force.

6. The infusion detector according to claim 1, characterized in that, The cross-section of the cavity (13) is a semi-circular groove.

7. The infusion detector according to claim 1, characterized in that, The base (10) is made of LDS plastic.

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