Modular cold heat contact urticaria provocation structure

Abstract

The utility model relates to medical instrument technical field, concretely is a kind of modularization cold and hot contact urticaria excitation structure. Including bearing frame, temperature execution module and heat insulation observation module. The bearing frame can be self-adaptive to fit human body surface camber;The temperature execution module contains multi-zone independent temperature control unit, can realize the accurate cold and hot stimulation of different temperature gradient;The heat insulation observation module is covered on temperature execution module, with efficient heat insulation and mechanical trigger mark function. The utility model is through the combined application of physical separation and efficient heat insulation material, effectively solve the heat crosstalk problem between multi-temperature zone, ensure the accuracy and stability of temperature control.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a modular cold and hot contact urticaria triggering structure. Background Technology

[0002] Cold contact urticaria and hot contact urticaria are important subtypes of physical urticaria. The core of their clinical diagnosis lies in accurately inducing a wheal reaction through controlled temperature stimulation and determining the patient's temperature tolerance threshold. This threshold is a crucial objective basis for differentiating disease severity, guiding daily protection, and developing personalized desensitization treatment plans, possessing irreplaceable value in dermatology and allergy practice. Current clinical diagnosis generally relies on traditional cold and hot stimulation devices, which often integrate multiple test points using a single metal or temperature control plate. However, this design has inherent technical limitations. Regarding temperature control, because the stimulation units are only simply electrically isolated without effective physical thermal blocking structures, significant heat conduction between adjacent test areas is unavoidable, leading to severe distortion of the preset temperature gradient in actual operation. For example, a cold stimulation unit set at 5°C may actually rise to 8°C or higher due to heat transfer from a neighboring 15°C unit. This results in a large deviation between the temperature read by the instrument and the actual temperature acting on the skin, ultimately leading to unreliable threshold measurements and directly affecting diagnostic accuracy. Furthermore, the observation window of existing devices is typically directly coupled to the excitation substrate, lacking an efficient active thermal insulation design. Environmental heat exchange further interferes with the stability of the stimulation temperature. These temperature crosstalk issues have become a bottleneck restricting the clinical application of existing technologies, necessitating an excitation structure capable of truly independent, precise, and stable temperature control to improve diagnostic reliability and validity. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose a modular cold and hot contact urticaria stimulation structure. By setting up a conformal bearing frame composed of a shape memory alloy main beam and a honeycomb aluminum substrate, a multi-gradient temperature execution unit composed of independently controlled Peltier plates and conical ceramic contacts, and an integrated heat-insulated observation window composed of a transparent polycarbonate plate and a high-density aerogel sheet, this invention solves the problems in the prior art, such as inaccurate temperature control due to thermal crosstalk, fluctuations in stimulation intensity due to insufficient heat insulation, and poor heat transfer efficiency due to poor adhesion to the body surface caused by the overall rigid design.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A modular hot and cold contact urticaria triggering structure includes a shape memory alloy main beam with silicone telescopic side wings hinged to both sides. A honeycomb aluminum substrate is snapped onto the main beam, and the honeycomb aluminum substrate has fifteen honeycomb holes with physical partition walls between adjacent holes. A tapered ceramic contact is interference-fitted into each honeycomb hole. The end of each tapered ceramic contact facing away from the skin is in direct contact with the thermally conductive surface of a Peltier sheet, and each Peltier sheet is snapped onto the skin-facing side of the honeycomb aluminum substrate. A transparent polycarbonate plate is covered on the honeycomb aluminum substrate, and the edge of the transparent polycarbonate plate is heat-pressed to seal the honeycomb aluminum substrate. An aerogel sheet is filled in the sealed cavity formed between the transparent polycarbonate plate and the honeycomb aluminum substrate. A UV excitation coding substrate is attached to the inner surface of the transparent polycarbonate plate, and a gel microcapsule layer is printed on the UV excitation coding substrate.

[0006] Furthermore, a central air bladder is bonded to the side of the shape memory alloy main beam facing the skin, and a manual pressure pump and a mechanical pressure relief valve are connected to the central air bladder.

[0007] Furthermore, the central airbag is connected to the Peltier plate via a Y-shaped silicone diverter valve.

[0008] Furthermore, the edge of the transparent polycarbonate sheet is embedded with a UV-LED light strip, which is connected to a magnetic induction coil via a wire.

[0009] Furthermore, the gel microcapsule layer contains a water-soluble dye.

[0010] Furthermore, the mechanical pressure relief valve includes a valve body, a pre-compression spring, and a silicone sealing plug. The valve body is connected to the central air bladder, and the pre-compression spring and the silicone sealing plug are disposed within the valve body.

[0011] Furthermore, the filling density of the aerogel sheet is not less than 95%.

[0012] Furthermore, the conical ceramic contact is made of aluminum nitride.

[0013] This utility model has the following beneficial effects:

[0014] This invention utilizes an excitation device that simultaneously incorporates a multi-zone independent temperature control structure, a highly efficient physical insulation structure, and a mechanical triggering marker structure. Through a temperature control module with honeycomb partitions and high-density aerogel filling, it effectively blocks thermal crosstalk between adjacent temperature zones, ensuring the independence and accuracy of each temperature stimulation point and providing a reliable foundation for precise temperature threshold determination. By integrating a fluorescently coded grid and a mechanically sensitive microcapsule layer into the observation module, it achieves automatic and visual marking of positive skin wheal reactions and accurately correlates the reaction location with the corresponding stimulation temperature, greatly avoiding subjective errors and positioning mistakes that may arise from manual observation and recording. The overall structural design significantly improves the accuracy and reliability of diagnosing cold and hot contact urticaria, simplifies the operation process, reduces the operational burden on medical personnel, and has good clinical application value. Attached Figure Description

[0015] Figure 1 For the overall assembly structure drawing;

[0016] Figure 2 Top view of the overall assembly structure;

[0017] Figure 3 Front view of the overall assembly structure;

[0018] Figure 4 This is a structural diagram of a transparent polycarbonate sheet;

[0019] Figure 5 This is a control relationship diagram.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Shape memory alloy main beam; 2. Silicone telescopic side wings; 3. Honeycomb aluminum substrate; 4. Peltier sheet; 5. Conical ceramic contact; 6. Transparent polycarbonate plate; 7. Aerogel sheet; 8. UV-excited coding substrate; 9. Gel microcapsule layer. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] Reference Figure 1-5 This utility model provides an embodiment of a modular cold and hot contact urticaria triggering structure, including a shape memory alloy main beam 1, which serves as the core load-bearing frame. The main beam 1 has multiple standard slots along its length on its front side. A honeycomb aluminum substrate 3 is connected to the slots on the front side of the shape memory alloy main beam 1 via multiple snaps on its back side, achieving rapid installation and reliable fixation.

[0025] The honeycomb aluminum substrate 3 adopts a honeycomb structure design with fifteen independent honeycomb cells evenly distributed. Physical partitions are provided between adjacent honeycomb cells, with the height of the partitions being 1.5 times the thickness of the honeycomb aluminum substrate 3. A tapered ceramic contact 5 is installed within each honeycomb cell using an interference fit. The tapered ceramic contact 5 is made of aluminum nitride with high thermal conductivity, and its tip faces the skin and protrudes 0.5 mm from the surface of the honeycomb aluminum substrate 3. The end of each tapered ceramic contact 5 facing away from the skin is in direct contact with the heat-conducting surface of a Peltier plate 4, ensuring efficient heat transfer. Each Peltier plate 4 is locked to its corresponding mounting position on the back of the honeycomb aluminum substrate 3 by its built-in retaining clips. Each independent temperature control unit is equipped with an independent temperature sensor and control circuitry.

[0026] A transparent polycarbonate sheet 6 covers the front of the honeycomb aluminum substrate 3, on which all temperature control units are installed. Its edges are sealed to the periphery of the honeycomb aluminum substrate 3 by hot pressing at 180 degrees Celsius, forming a completely sealed cavity. Aerogel sheets 7 are manually filled into this sealed cavity with a filling density of not less than 95%, ensuring that all gaps between the individual temperature control units are fully filled, forming an effective thermal insulation barrier.

[0027] A UV-excited coding substrate 8 is attached to the inner surface of a transparent polycarbonate plate 6. A gel microcapsule layer 9 is fabricated on the UV-excited coding substrate 8 using a precision printing process. The gel microcapsule layer 9 encapsulates a water-soluble fluorescent dye.

[0028] In this embodiment, the structure is first worn. The excitation structure is wrapped around the patient's lumbar region to be tested. The shape memory alloy main beam 1 is used to make it adaptively conform to the curvature of the human lumbar region. The silicone telescopic side wings 2 are tightened and fixed by their elastic stretching to ensure that the tips of each conical ceramic contact 5 maintain uniform contact with the skin surface.

[0029] Next, temperature control detection is initiated. The operating status of each of the fifteen Peltier pads 4 is independently controlled by an external control system, allowing them to perform gradient cooling or heating according to a preset program. The temperature test range covers 0 to 45 degrees Celsius, with a temperature gradient interval of 3 degrees Celsius. The cold or heat generated by each Peltier pad 4 is efficiently transferred to the skin surface through a conical ceramic contact 5 in close contact with it, achieving precise thermal activation.

[0030] Throughout the excitation process, the physical partition wall of the honeycomb aluminum substrate 3 and the high-density filled aerogel sheet 7 together form a double thermal insulation barrier, effectively blocking heat conduction between adjacent temperature control units, ensuring the independence and accuracy of temperature in each region, and reducing the crosstalk intensity of temperature zones by more than 90%.

[0031] The reaction was then observed. The operator observed the skin surface reaction in real time through a transparent polycarbonate plate 6. When a wheal appeared on a certain area of ​​the skin due to stimulation, the wheal would compress the corresponding gel microcapsule layer 9, causing the microcapsules to rupture. The water-soluble fluorescent dye contained within was released and developed on the UV-excited coded substrate 8. By irradiating with an external UV light source, the location of the developed wheal could be clearly observed, and its corresponding temperature zone could be accurately determined based on the coordinate coding of the UV-excited coded substrate 8.

[0032] After the test is completed, the constraints on the shape memory alloy main beam 1 are released, and the entire excitation structure is removed from the patient's waist to complete the testing process.

[0033] This embodiment achieves rapid assembly and stable load-bearing capacity through the snap-fit ​​connection between the shape memory alloy main beam 1 and the honeycomb aluminum substrate 3; the interference fit between the tapered ceramic contact 5 and the honeycomb holes, and its direct contact with the Peltier sheet 4, ensures the high efficiency and reliability of the heat transfer path; the thermo-press sealing between the transparent polycarbonate plate 6 and the honeycomb aluminum substrate 3, and the high-density filling of the aerogel sheet 7, constitute a highly efficient thermal insulation system, fundamentally solving the technical problem of crosstalk in multiple temperature zones. The overall structure is compact, the connection relationship between each component is clear, the assembly logic is clear, and it achieves precise, independent, and stable cold and hot excitation functions.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular cold and heat contact urticaria triggering structure, characterized in that: The device includes a shape memory alloy main beam with silicone telescopic side wings connected to both sides via hinges. A honeycomb aluminum substrate is attached to the main beam via snap-fit ​​connections. The honeycomb aluminum substrate has fifteen honeycomb holes, with physical partition walls between adjacent holes. A tapered ceramic contact is interference-fitted within each honeycomb hole. The end of each tapered ceramic contact facing away from the skin is in direct contact with the thermally conductive surface of a Peltier sheet. Each Peltier sheet is fixed to the skin-facing side of the honeycomb aluminum substrate via snap-fit ​​connections. A transparent polycarbonate plate covers the honeycomb aluminum substrate, with its edge heat-sealed to the substrate. An aerogel sheet fills the sealed cavity formed between the transparent polycarbonate plate and the honeycomb aluminum substrate. A UV-excited coding substrate is adhered to the inner surface of the transparent polycarbonate plate, and a gel microcapsule layer is printed on the UV-excited coding substrate.

2. The modular cold and heat contact urticaria triggering structure according to claim 1, characterized in that: The shape memory alloy main beam is bonded to a central air bladder on the side facing the skin, and the central air bladder is connected to a manual pressure pump and a mechanical pressure relief valve.

3. The modular cold and heat contact urticaria triggering structure according to claim 2, characterized in that: The central airbag is connected to the Peltier plate via a Y-shaped silicone diverter valve.

4. The modular cold and heat contact urticaria triggering structure according to claim 1, characterized in that: The edge of the transparent polycarbonate sheet is fitted with a UV-LED light strip, which is connected to a magnetic induction coil via wires.

5. The modular cold and heat contact urticaria triggering structure according to claim 1, characterized in that: The gel microcapsule layer contains a water-soluble dye.

6. The modular cold and heat contact urticaria triggering structure according to claim 2, characterized in that: The mechanical pressure relief valve includes a valve body, a preload spring, and a silicone sealing plug. The valve body is connected to the central air bladder, and the preload spring and the silicone sealing plug are disposed within the valve body.

7. The modular cold and heat contact urticaria triggering structure according to claim 1, characterized in that: The aerogel sheet has a filling density of not less than 95%.

8. The modular cold and heat contact urticaria triggering structure according to claim 1, characterized in that: The tapered ceramic contact is made of aluminum nitride.

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