A measuring tool for an infusion device housing
By combining a fixed base and a micrometer measuring device, the problems of measurement error and complex operation of the infusion device casing are solved, achieving high-precision and simple measurement results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- APOLLO SCI APP JIANGSU
- Filing Date
- 2025-10-22
- Publication Date
- 2026-07-24
AI Technical Summary
The measurement of the outer shell of existing infusion devices suffers from measurement errors and operational complexity, especially the difficulty in boundary extraction caused by light source interference and irregular contours of plastic edges.
A fixed base and micrometer measuring device are used. The micrometer is slidably connected to the fixed base. Different parts of the infusion device housing are measured by sliding. Combined with a digital micrometer and calibration block, the accuracy and convenience of measurement are ensured.
It improves the measurement accuracy of the infusion device housing size, reduces the influence of optical interference, reduces human error, is easy to operate, adapts to complex structures, and achieves a measurement accuracy of 0.001mm.
Smart Images

Figure CN224552252U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of measuring the casing of infusion devices, and in particular to a measuring fixture for the casing of infusion devices. Background Technology
[0002] Infusion devices are medical instruments or equipment used for intravenous infusion, primarily for the safe and accurate delivery of medications, nutritional solutions, or other therapeutic fluids into the patient's body. Based on different technical principles and application scenarios, infusion devices can be broadly categorized into traditional gravity infusion sets and intelligent infusion pumps. Each type has different applicable scenarios and functional characteristics in clinical practice. The casing dimensions of intelligent infusion pump devices are closely related to infusion accuracy and the accuracy of occlusion alarm pressure values.
[0003] Currently, the dimensions of infusion device casings are primarily measured using 2.5D imaging devices. However, under illumination, specular reflections can occur, interfering with the accuracy of edge extraction algorithms. The edges of soft plastics (such as silicone infusion bag interfaces) may appear irregular in the image, making it difficult for traditional image measurement software to accurately extract boundaries. If multi-view shooting and stitching measurement is required, insufficient consistency in the reference points on the plastic surface can easily lead to accumulated stitching errors. Furthermore, some 2.5D imaging devices require manual focusing or adjustment of the light source (such as the LED ring light angle). Improper operation can result in unclear imaging of the plastic casing edges, necessitating intervention from experienced technicians. Summary of the Invention
[0004] The measurement of the outer casing dimensions of existing infusion devices suffers from measurement errors due to interference and is also complicated to operate.
[0005] To address the aforementioned issues, a measuring fixture for the casing of an infusion device is proposed. By setting up a fixed base and a micrometer measuring device, the micrometer measuring device is slidably connected to the fixed base. The micrometer measuring device measures the dimensions of different parts of the infusion device casing by sliding. The operation is simple, improves the accuracy of measuring the dimensions of the infusion device casing, and solves the problems of measurement errors due to interference and complex operation in the existing measurement of the casing dimensions of infusion devices.
[0006] A measuring fixture for the housing of an infusion device, comprising:
[0007] Fixed base;
[0008] Micrometer measuring device;
[0009] The mounting base is used to fix the outer shell of the infusion device to be tested, and the micrometer measuring device is slidably connected to the mounting base;
[0010] The measuring end of the micrometer measuring device contacts the outer shell of the infusion device, and the micrometer measuring device measures the dimensions of different parts of the outer shell of the infusion device by sliding.
[0011] In conjunction with the measuring fixture for the infusion device housing described in this utility model, in a first possible embodiment, the micrometer measuring device includes:
[0012] slider;
[0013] Digital micrometer;
[0014] The digital micrometer is fixed to the slider;
[0015] The slider is slidably connected to the fixed base.
[0016] In conjunction with the first possible embodiment of this utility model, in the second possible embodiment, the fixing base includes:
[0017] Sliding bracket;
[0018] The sliding bracket is disposed at one end of the fixed base;
[0019] The slider is slidably connected to the sliding bracket.
[0020] In conjunction with the second possible embodiment of this utility model, in the third possible embodiment, the sliding bracket includes a T-shaped groove, and correspondingly, the slider includes a T-shaped portion;
[0021] The T-shaped part is adapted to the T-shaped groove and is slidably connected.
[0022] In conjunction with the third possible embodiment of this utility model, and in the fourth possible embodiment, the slider further includes a protrusion;
[0023] The protrusion is attached to the outer edge of the sliding bracket.
[0024] In conjunction with the measuring fixture for the infusion device housing described in this utility model, in a fifth possible embodiment, the fixing base further includes:
[0025] Base and limiting block;
[0026] The limiting blocks are disposed on both sides of the base and are used to fix and limit the product.
[0027] In conjunction with the fifth possible embodiment of this utility model, in the sixth possible embodiment, the measuring fixture further includes a calibration block;
[0028] The calibration block is placed on the base and is used to calibrate the micrometer measuring device.
[0029] In conjunction with the fifth and sixth possible embodiments of this utility model, the calibration block has an L-shaped structure.
[0030] The measuring fixture for the infusion device housing described in this utility model is designed with a fixed base and a micrometer measuring device. The micrometer measuring device is slidably connected to the fixed base, and the micrometer measuring device measures the dimensions of different parts of the infusion device housing by sliding. The operation is simple, improves the accuracy of the infusion device housing size measurement, and solves the problems of measurement error due to interference and complex operation in the existing infusion device housing size measurement. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the overall structure of the measuring fixture for the infusion device housing in this utility model;
[0033] Figure 2 This is an exploded view of the overall structure of the measuring fixture for the infusion device housing in this utility model;
[0034] The parts referred to by the numbers in the attached diagram are as follows: 100 - fixed base, 110 - sliding bracket, 111 - T-slot, 120 - base, 130 - limiting block, 200 - micrometer measuring device, 210 - slider, 211 - T-shaped part, 212 - protrusion, 220 - digital micrometer, 300 - calibration block, 400 - infusion device housing. Detailed Implementation
[0035] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this utility model.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0037] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0038] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0040] The measurement of the outer casing dimensions of existing infusion devices suffers from measurement errors due to interference and is also complicated to operate.
[0041] To address the above problems, a measuring fixture for the casing 400 of an infusion device is proposed.
[0042] A measuring fixture for an infusion device housing 400, such as Figure 1 , Figure 1This is a schematic diagram of the overall structure of the measuring fixture for the infusion device housing 400 in this utility model. It includes a fixed base 100 and a micrometer measuring device 200. The fixed base 100 is used to fix the infusion device housing 400 to be tested, and the micrometer measuring device 200 is slidably connected to the fixed base 100. The measuring end of the micrometer measuring device 200 contacts the infusion device housing 400, and the micrometer measuring device 200 measures the dimensions of different parts of the infusion device housing 400 by sliding. By setting the fixed base 100 and the micrometer measuring device 200, and slidably connecting the micrometer measuring device 200 to the fixed base 100, the micrometer measuring device 200 measures the dimensions of different parts of the infusion device housing 400 by sliding. This simplifies operation, improves the accuracy of the measurement of the dimensions of the infusion device housing 400, and solves the problems of measurement errors due to interference and complex operation in existing infusion device housing dimension measurements.
[0043] In this embodiment, the casing of the infusion device is measured using a digital micrometer 220. During measurement, it is unaffected by ambient light, and the micrometer is accurate to the thousandth of a millimeter (0.001 mm), resulting in higher measurement accuracy. High-precision measurement: The digital micrometer 220 achieves an accuracy of 0.001 mm, far exceeding that of 2.5D image measuring instruments. Reduced optical interference: Direct contact measurement avoids issues such as plastic reflection and light transmission. Adaptable to complex structures, capable of measuring curved surfaces, chamfers, and other three-dimensional features. Simple operation: No need for experienced technicians, reducing human error.
[0044] During measurement, the outer casing of the infusion device to be tested is fixed on the mounting base 100, and the micrometer measuring device 200 is slid to the position where the appearance needs to be measured to measure the appearance dimensions.
[0045] Furthermore, such as Figure 2 , Figure 2 This is an exploded view of the overall structure of the measuring fixture for the infusion device housing 400 in this utility model; the micrometer measuring device 200 includes a slider 210 and a digital micrometer 220; the digital micrometer 220 is fixed on the slider 210; the slider 210 is slidably connected to the fixed base 100.
[0046] In this embodiment, the digital micrometer 220 moves with the slider 210, and the slider 210 can slide linearly on the sliding bracket 110.
[0047] Furthermore, such as Figure 2 The fixed base 100 includes a sliding bracket 110; the sliding bracket 110 is disposed at one end of the fixed base 100; the slider 210 is slidably connected to the sliding bracket 110.
[0048] Furthermore, such as Figure 2The sliding bracket 110 includes a T-slot 111, and the corresponding slider 210 includes a T-shaped part 211; the T-shaped part 211 is adapted to the T-slot 111 and is slidably connected.
[0049] Furthermore, such as Figure 2 The slider 210 also includes a protrusion 212; the protrusion 212 is attached to the outer edge of the sliding bracket 110.
[0050] Furthermore, such as Figure 2 The fixed base 100 also includes a base 120 and a limiting block 130; the limiting block 130 is disposed on both sides of the base 120 and is used to fix and limit the product.
[0051] Furthermore, such as Figure 2 The measuring fixture also includes a calibration block 300; the calibration block 300 is placed on the base 120 and is used to calibrate the micrometer measuring device 200. Preferably, the calibration block 300 has an L-shaped structure.
[0052] After calibration, remove the calibration block 300 to avoid affecting the movement of the micrometer measuring device 200.
[0053] In this embodiment, the slider 210 fixes the digital micrometer 220 to ensure measurement stability, the sliding bracket 110 allows the digital micrometer 220 to move to adapt to different measurement positions, and the limiting block 130 is used to fix the infusion device housing 400 to prevent displacement during measurement.
[0054] Measurement process
[0055] Calibration and zeroing: Use the reference calibration block 300 to calibrate the digital micrometer 220 and zero it.
[0056] Fixed product: Place the housing 400 of the infusion device to be tested on the fixed base 100 and fix it by the limiting block 130.
[0057] Moving the measurement: Adjust slider 210 to move digital micrometer 220 to the position to be measured.
[0058] Data recording: Read and record the measurements from the digital micrometer 220.
[0059] The measuring fixture for the infusion device housing 400 of this utility model is provided by setting a fixed base 100 and a micrometer measuring device 200, so that the micrometer measuring device 200 is slidably connected to the fixed base 100. The micrometer measuring device 200 measures the dimensions of different parts of the infusion device housing 400 by sliding. The operation is simple and improves the measurement accuracy of the dimensions of the infusion device housing 400. It solves the problems of measurement error due to interference and operation complexity in the existing infusion device housing dimension measurement.
[0060] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A measuring fixture for the housing of an infusion device, characterized in that, include: Fixed base; Micrometer measuring device; The mounting base is used to fix the housing of the infusion device, and the micrometer measuring device is slidably connected to the mounting base; The measuring end of the micrometer measuring device contacts the outer shell of the infusion device, and the micrometer measuring device measures the dimensions of different parts of the outer shell of the infusion device by sliding.
2. The measuring fixture for the casing of the infusion device according to claim 1, characterized in that, The micrometer measuring device includes: slider; Digital micrometer; The digital micrometer is fixed to the slider; The slider is slidably connected to the fixed base.
3. The measuring fixture for the casing of the infusion device according to claim 2, characterized in that, The fixing base includes: Sliding bracket; The sliding bracket is disposed at one end of the fixed base; The slider is slidably connected to the sliding bracket.
4. The measuring fixture for the casing of the infusion device according to claim 3, characterized in that, The sliding bracket includes a T-shaped groove, and correspondingly, the slider includes a T-shaped portion; The T-shaped part is adapted to the T-shaped groove and is slidably connected.
5. The measuring fixture for the casing of the infusion device according to claim 4, characterized in that, The slider also includes a protrusion; The protrusion is attached to the outer edge of the sliding bracket.
6. The measuring fixture for the casing of the infusion device according to claim 1, characterized in that, The mounting base also includes: Base and limiting block; The limiting blocks are disposed on both sides of the base and are used to fix and limit the product.
7. The measuring fixture for the casing of the infusion device according to claim 6, characterized in that, The measuring fixture also includes a calibration block; The calibration block is placed on the base and is used to calibrate the micrometer measuring device.
8. The measuring fixture for the casing of the infusion device according to claim 7, characterized in that, The calibration block has an L-shaped structure.