Modularized cold and hot contact urticaria diagnosis waistband

Abstract

The invention relates to a modularized cold and hot contact urticaria diagnosis waistband, and belongs to the technical field of medical instruments, the modularized cold and hot contact urticaria diagnosis waistband comprises a bearing framework, and the bearing framework is matched with silica gel side wings to realize self-adaptive wearing; the temperature execution module comprises a multi-zone independent temperature control unit, and differential cold excitation can be achieved; the heat insulation observation module reduces temperature area crosstalk through efficient heat insulation design, and is provided with a mechanical trigger type marking structure to position a focus; and the pressure control module ensures stable contact pressure. According to the device, cold contact excitation, focus marking and pressure control are accurately achieved through the multi-area synergistic effect, the diagnosis accuracy is effectively improved, missed diagnosis errors are reduced, operation is convenient and fast, and reliable support is provided for clinical diagnosis of cold contact urticaria.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a modular cold and hot contact urticaria diagnostic belt. Background Technology

[0002] Cold contact urticaria and hot contact urticaria are common subtypes of physical urticaria in clinical practice. Their core characteristic is the appearance of allergic reactions such as wheals and erythema after skin contact with cold / hot stimuli. Accurately measuring the patient's skin temperature tolerance threshold is crucial for accurate diagnosis, developing individualized treatment plans, and assessing prognosis. This diagnostic technique directly relates to determining the severity of the patient's allergy, the effectiveness of daily cold stimulation protection guidance, and the targeted nature of clinical interventions. It has significant clinical value and application in allergy and dermatology practice.

[0003] Current techniques for diagnosing cold contact urticaria primarily rely on traditional single-point cold stimulation devices or simple multi-temperature integrated devices. However, these techniques have inherent and insurmountable drawbacks. At the temperature control level, the lack of effective physical isolation structures leads to significant heat conduction between adjacent test areas, causing interference between cold stimuli at different preset temperatures. This prevents truly independent and precise application of multiple temperature gradients, resulting in large deviations in temperature threshold measurements. At the contact pressure level, the contact pressure between the device and the skin lacks a stable and adjustable mechanism. Even slight fluctuations in pressure directly affect the heat transfer efficiency of the cold stimulus, causing inconsistencies in the actual effective cold stimulus intensity acting on the skin at the same temperature setting, further exacerbating the instability of diagnostic results. At the lesion observation level, the identification of positive reactions such as wheals relies mainly on manual visual judgment. This is prone to missed diagnoses in complex areas such as curved surfaces due to limited viewing angles, and the correlation between the location of wheals and the corresponding temperature region requires manual recording, which easily introduces localization errors and affects diagnostic accuracy.

[0004] While existing technologies have attempted improvements by optimizing temperature control circuits or increasing the number of test points, they have failed to address the core issue of temperature crosstalk in the structural design, resulting in limited temperature isolation effectiveness. Furthermore, the lack of an automated lesion marking mechanism synchronized with the cold excitation process necessitates manual recording of correlations, leading to low diagnostic efficiency and a high error rate. Therefore, achieving independent and precise temperature control across multiple zones, effective maintenance of stable contact pressure, and automatic and accurate correspondence between lesions and temperature zones through structural innovation has become a critical issue urgently needing to be addressed in current diagnostic techniques for cold contact urticaria. Summary of the Invention

[0005] In view of this, the purpose of this invention is to propose a modular cold and hot contact urticaria diagnostic belt. By setting up a load-bearing frame composed of a shape memory alloy main beam and silicone telescopic side wings, a temperature execution module composed of a honeycomb aluminum substrate and an independent temperature control unit, a heat insulation observation module composed of a transparent polycarbonate plate, an aerogel sheet and a double-layer fluorescent mesh, and a pressure control module composed of a central airbag, a manual pressure pump and a mechanical pressure relief valve, this invention solves the problems in the prior art, such as inaccurate temperature control due to temperature crosstalk, unstable contact pressure affecting detection accuracy, and errors in manually associating lesions with temperature regions.

[0006] This invention is achieved through the following technical solution:

[0007] A modular diagnostic belt for hot and cold contact urticaria includes a support frame comprising a shape memory alloy main beam and silicone telescopic side wings connected to both sides of the shape memory alloy main beam. A temperature control module is mounted on the shape memory alloy main beam, comprising a honeycomb aluminum substrate and multiple independent temperature control units. The honeycomb aluminum substrate is mounted on the shape memory alloy main beam, and the independent temperature control units are mounted on the honeycomb aluminum substrate. A heat-insulating observation module covers the temperature control module, comprising a transparent polycarbonate plate, an aerogel sheet, and a double-layer fluorescent grid. The transparent polycarbonate plate covers... On the honeycomb aluminum substrate, the aerogel sheet fills the gaps of the temperature execution module and the space between the transparent polycarbonate plate and the honeycomb aluminum substrate, and the double-layer fluorescent mesh is disposed on the inner side of the transparent polycarbonate plate; a pressure control module is also disposed on the shape memory alloy main beam, the pressure control module includes a central airbag, a manual pressure pump, a mechanical pressure relief valve and a Y-type silicone diverter valve, the central airbag is disposed on the side of the shape memory alloy main beam facing the skin, the manual pressure pump is connected to the central airbag, the mechanical pressure relief valve is disposed on the central airbag, and the Y-type silicone diverter valve is connected to the central airbag and the independent temperature control unit respectively.

[0008] Furthermore, the silicone telescopic side wings are connected to both sides of the shape memory alloy main beam via hinges, and the surface of the silicone telescopic side wings is provided with a wavy texture.

[0009] Furthermore, the honeycomb aluminum substrate is connected to the shape memory alloy main beam by a snap fastener. The honeycomb aluminum substrate has honeycomb holes. The independent temperature control unit includes a Peltier plate and a conical ceramic contact. The Peltier plate is fixed to the side of the honeycomb aluminum substrate away from the skin. The conical ceramic contact passes through the honeycomb holes and is interference-fitted with the honeycomb aluminum substrate. Physical partition walls are provided between adjacent honeycomb holes of the honeycomb aluminum substrate.

[0010] Furthermore, the edge of the transparent polycarbonate plate is sealed to the honeycomb aluminum substrate, and the aerogel sheet has a filling density of not less than 95%.

[0011] Furthermore, the dual-layer fluorescent grid includes a UV-excited coding substrate and a gel microcapsule layer. The UV-excited coding substrate is attached to the inner surface of the transparent polycarbonate plate, and the gel microcapsule layer is disposed on the UV-excited coding substrate. The gel microcapsule layer contains a water-soluble dye.

[0012] Furthermore, the manual pressure pump is connected to the central airbag via a connecting conduit, and the manual pressure pump is equipped with a simulated pressure gauge.

[0013] 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. The pre-compression spring and the silicone sealing plug are disposed within the valve body. One end of the pre-compression spring is connected to the valve body, and the other end is connected to the silicone sealing plug. The silicone sealing plug seals the pressure relief channel of the valve body under the action of the pre-compression spring.

[0014] Furthermore, the Y-shaped silicone diverter valve includes a main end and two branch ends. The main end is connected to the central airbag, and the two branch ends are respectively connected to different independent temperature control units. A UV-LED light strip is embedded in the edge of the transparent polycarbonate plate. The UV-LED light strip is connected to a magnetic induction coil through a wire. The magnetic induction coil cooperates with the phase change energy storage box fixed on the shape memory alloy main beam.

[0015] The beneficial effects of this invention are as follows:

[0016] This invention utilizes a modular cold-contact urticaria diagnostic belt that integrates a support frame, a temperature control module, a thermal observation module, and a pressure control module. The support frame ensures a stable and comfortable fit, facilitating a close fit to the curved surface of the waist. The independent temperature control design of the temperature control module enables precise cold excitation in multiple zones. The efficient thermal insulation and mechanical triggering markers of the thermal observation module reduce temperature crosstalk and automatically associate lesions with temperature zones. The pressure control module maintains stable contact pressure. Overall, this design improves the accuracy and convenience of the diagnostic process, reduces missed diagnoses, enhances operational efficiency, and provides reliable support for the clinical diagnosis of cold-contact urticaria. Attached Figure Description

[0017] Figure 1 For the overall assembly structure drawing;

[0018] Figure 2 Top view of the overall assembly structure;

[0019] Figure 3 A front view of the overall assembly structure;

[0020] Figure 4 Rear view of the assembled overall structure;

[0021] Figure 5 This is a structural diagram of a transparent polycarbonate sheet;

[0022] Figure 6 This is a diagram of the central airbag ventilation structure.

[0023] Explanation of reference numerals in the attached figures:

[0024] 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 sheet; 7. Aerogel sheet; 8. UV excitation coding substrate; 9. Gel microcapsule layer; 10. Central airbag; 11. Manual pressure pump; 12. Connecting conduit; 13. Mechanical pressure relief valve; 14. Y-type silicone diverter valve; 15. UV-LED light strip; 16. Magnetic induction coil; 17. Phase change energy storage box. Detailed Implementation

[0025] like Figures 1 to 6 As shown, this embodiment provides a modular cold and hot contact urticaria diagnostic belt, including a support frame comprising a shape memory alloy main beam 1 and silicone telescopic side wings 2, the silicone telescopic side wings 2 being hinged to both sides of the shape memory alloy main beam 1; it also includes a honeycomb aluminum substrate 3, which is connected to the shape memory alloy main beam 1 via a buckle on the shape memory alloy main beam 1; a Peltier sheet 4 and a tapered ceramic contact 5 form an independent temperature control unit. In this embodiment, 15 temperature control units are arranged separately on the device. The Peltier sheet 4 is fixed to the side of the honeycomb aluminum substrate 3 away from the skin by a buckle, and the tapered ceramic contact 5 is press-fitted into the honeycomb holes of the honeycomb aluminum substrate 3; a transparent polycarbonate plate 6 covers the honeycomb aluminum substrate 3, with its edges heat-sensitive to the honeycomb aluminum substrate 3. The pressure seal is sealed; aerogel sheets 7 are filled in the gaps between each temperature control unit and in the cavity formed by the transparent polycarbonate plate 6 and the honeycomb aluminum substrate 3; UV excitation coding substrate 8 is attached to the inner surface of the transparent polycarbonate plate 6, and gel microcapsule layer 9 is printed on the grid nodes of the UV excitation coding substrate 8; the central airbag 10 is fixed to the inner side of the shape memory alloy main beam 1 by adhesive, the manual pressure pump 11 is connected to the central airbag 10 through the connecting conduit 12, and the mechanical pressure relief valve 13 is set on the central airbag 10; one end of the Y-type silicone diverter valve 14 is connected to the central airbag 10, and the other two ends are connected to different temperature control units respectively; the UV-LED light strip 15 is embedded in the edge of the transparent polycarbonate plate 6 and connected to the magnetic induction coil 16 through the wire, and the magnetic induction coil 16 cooperates with the phase change energy storage box 17 to draw power.

[0026] The shape memory alloy main beam 1 serves as the load-bearing foundation and is equipped with a snap-fit ​​structure. The honeycomb aluminum substrate 3 is securely connected to the shape memory alloy main beam 1 through this snap-fit, ensuring the stable fixation of the temperature actuator module. The silicone telescopic side wings 2 are connected to both sides of the shape memory alloy main beam 1 through hinges and can rotate around the hinge points to achieve adaptive adjustment when the belt is worn.

[0027] The honeycomb holes on the aluminum honeycomb substrate 3 provide mounting positions for independent temperature control units. After the conical ceramic contact 5 is pressed into the honeycomb holes, its end facing the skin protrudes 0.5mm from the surface of the aluminum honeycomb substrate 3 to ensure effective contact with the skin. The Peltier sheet 4 is fixed to the upper end of the corresponding honeycomb hole of the aluminum honeycomb substrate 3 by a snap fastener and contacts the rear end of the conical ceramic contact 5 to achieve heat transfer.

[0028] The edges of the transparent polycarbonate plate 6 and the honeycomb aluminum substrate 3 are sealed together by 180°C hot pressing to form a sealed cavity. Aerogel sheets 7 are manually filled into the cavity and the gaps between the temperature control units to achieve good heat insulation. The UV-excited coding substrate 8 is attached to the inner surface of the transparent polycarbonate plate 6 with adhesive. The gel microcapsule layer 9 is precisely printed on the grid nodes of the UV-excited coding substrate 8 to form a heat insulation observation module.

[0029] The central airbag 10 is fixed to the inner side of the shape memory alloy main beam 1 facing the skin with medical adhesive. The main end of the Y-shaped silicone diversion valve 14 is connected to the central airbag 10 through the connecting conduit 12, and the branch ends are connected to each temperature control unit through the connecting conduit 12 to realize gas diversion. The manual pressure pump 11 is connected to the central airbag 10 through the connecting conduit 12. The analog pressure gauge on the manual pressure pump 11 can display the pressure inside the central airbag 10 in real time. The valve body of the mechanical pressure relief valve 13 is connected to the central airbag 10. One end of the pre-compression spring in the valve body abuts against the valve body, and the other end is connected to the silicone sealing plug. The silicone sealing plug seals the pressure relief channel under the action of the pre-compression spring.

[0030] The UV-LED light strip 15 is embedded in the edge of the transparent polycarbonate plate 6 and is electrically connected to the magnetic induction coil 16 through a wire. The magnetic induction coil 16 is placed in the phase change energy storage box 17 and draws power from the phase change energy storage box 17 through the principle of magnetic induction to power the UV-LED light strip 15.

[0031] In this embodiment,

[0032] First, perform the wearing procedure. Wrap the belt around the patient's waist. The silicone telescopic side wings 2, due to their hinged structure, can adapt to the patient's waist size and tighten through their own elasticity, ensuring the belt fits stably against the skin of the waist. At this time, all components are in their initial state, and the central airbag 10 is not inflated.

[0033] Next, the pressurization procedure is initiated. The manual pressure pump 11 is operated, squeezing approximately three times to inflate the central air bladder 10 through the connecting tube 12. The pressure inside the central air bladder 10 gradually increases, and the simulated pressure gauge on the manual pressure pump 11 displays the pressure value in real time. Squeezing is stopped when the pressure reaches 10 kPa. The gas is then distributed to each temperature control unit through the Y-type silicone diverter valve 14, ensuring that the conical ceramic contacts 5 of each temperature control unit maintain appropriate contact pressure with the skin.

[0034] Then, the testing work is carried out. The Peltier plate 4 is activated to allow it to undergo gradient cooling. The 15 different independent temperature control units are set according to the standard of one temperature control unit for every 3°C range, so as to realize stimulation detection in the temperature range of 0-45°C. The cold or heat is transferred to the skin through the conical ceramic contact 5 to achieve simultaneous cold or heat stimulation in multiple areas.

[0035] When a wheal reaction occurs on the skin, the wheal exerts pressure on the gel microcapsule layer 9, causing the water-soluble dye gel microcapsules within the gel microcapsule layer 9 to rupture, and the dye to seep out and diffuse into the UV-excited coded substrate 8. At this time, the UV-LED light strip 15 is turned on, and the ultraviolet light emitted by the UV-LED light strip 15 irradiates the UV-excited coded substrate 8 and the seeped dye. The location of the wheal after development can be observed through the transparent polycarbonate plate 6. Combined with the coordinate code of the UV-excited coded substrate 8, the temperature zone corresponding to the wheal can be determined.

[0036] After the test is completed, disassembly is performed. Press the mechanical pressure relief valve 13. Under pressure, the silicone sealing plug overcomes the pre-compression spring force to open the pressure relief channel. The gas in the central airbag 10 and each temperature control unit is discharged through the pressure relief channel. After the pressure drops to 0 kPa, untie the silicone telescopic side wings 2 and remove the waist belt from the patient's waist.

[0037] Throughout the testing process, the partition walls of the honeycomb aluminum substrate 3 effectively prevent heat conduction between the temperature control units, while the aerogel sheet 7 and the sealed cavity further enhance the heat insulation effect, ensuring the accuracy of temperature detection. The mechanically triggered imaging mechanism of the gel microcapsule layer 9 avoids errors caused by manually recording the location of lesions, thus improving diagnostic efficiency.

[0038] This embodiment achieves accurate diagnosis of cold-contact urticaria through the synergistic effect of the supporting frame, temperature execution module, heat insulation observation module, and pressure control module: the shape memory alloy main beam 1 and the silicone telescopic side wings 2 work together to allow the belt to adapt to the waist size of different patients, ensuring wearing stability; the partition structure of the honeycomb aluminum substrate 3 and the heat insulation effect of the aerogel sheet 7 effectively reduce temperature crosstalk and improve temperature detection accuracy; the gradient cooling function of the Peltier sheet 4 can simultaneously detect the skin reaction at different temperatures; the mechanical triggering imaging of the gel microcapsule layer 9 combined with the coordinate positioning of the UV-excited coded substrate 8 achieves accurate marking of lesions, reducing missed diagnoses and misdiagnoses.

[0039] In this embodiment, the conical ceramic contact 5 is made of aluminum nitride, which has good thermal conductivity and ensures that cold or heat is efficiently transferred to the skin; the central airbag 10 is made of medical-grade silicone, which has good sealing and biocompatibility and ensures the stability of pressure control.

[0040] In this embodiment, the branch angle of the Y-type silicone diverter valve 14 is set to 120°, so that the gas can be evenly distributed to each temperature control unit and the pressure at each contact point can be consistent.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A modular cold heat contact urticaria diagnostic waistband, characterized by: The application relates to a temperature and pressure control device for skin, which comprises a bearing framework, a shape memory alloy main beam and silica gel telescopic flanks connected to the two sides of the shape memory alloy main beam; a temperature execution module is arranged on the shape memory alloy main beam, the temperature execution module comprises a honeycomb aluminum base plate and a plurality of independent temperature control units, the honeycomb aluminum base plate is arranged on the shape memory alloy main beam, and the independent temperature control units are arranged on the honeycomb aluminum base plate; a heat insulation observation module is arranged on the temperature execution module, the heat insulation observation module comprises a transparent polycarbonate plate, an aerogel sheet and a double-layer fluorescent grid, the transparent polycarbonate plate is arranged on the honeycomb aluminum base plate, the aerogel sheet is filled in the gaps of the temperature execution module and between the transparent polycarbonate plate and the honeycomb aluminum base plate, and the double-layer fluorescent grid is arranged on the inner side of the transparent polycarbonate plate; a pressure control module is further arranged on the shape memory alloy main beam, the pressure control module comprises a central air bag, a manual pressure pump, a mechanical pressure relief valve and a Y-shaped silica gel shunt valve, the central air bag is arranged on the side of the shape memory alloy main beam facing the skin, the manual pressure pump is connected with the central air bag, the mechanical pressure relief valve is arranged on the central air bag, and the Y-shaped silica gel shunt valve is connected with the central air bag and the independent temperature control units respectively.

2. The modular cold-heat contact urticaria diagnostic waistband of claim 1, wherein: The silica gel telescopic flanks are connected with the two sides of the shape memory alloy main beam in a hinged mode, and the surface of the silica gel telescopic flanks is provided with wave-shaped lines.

3. The modular cold-heat contact urticaria diagnostic waistband of claim 1, wherein: The honeycomb aluminum base plate is connected with the shape memory alloy main beam in a buckling mode, the honeycomb aluminum base plate is provided with honeycomb holes, the independent temperature control units comprise Peltier sheets and conical ceramic contacts, the Peltier sheets are fixed to the side of the honeycomb aluminum base plate away from the skin, the conical ceramic contacts penetrate the honeycomb holes and are in interference fit with the honeycomb aluminum base plate, and physical partition walls are arranged between the adjacent honeycomb holes of the honeycomb aluminum base plate.

4. The modular cold-heat contact urticaria diagnostic waistband of claim 1, wherein: The edges of the transparent polycarbonate plate are sealingly connected with the honeycomb aluminum base plate, and the filling density of the aerogel sheet is not less than 95%.

5. The modular cold-heat contact urticaria diagnostic waistband of claim 1, wherein: The double-layer fluorescent grid comprises a UV excitation coding substrate and a gel microcapsule layer, the UV excitation coding substrate is attached to the inner side surface of the transparent polycarbonate plate, the gel microcapsule layer is arranged on the UV excitation coding substrate, and the gel microcapsule layer contains water-soluble dyes.

6. The modular cold-heat contact urticaria diagnostic waistband of claim 1, wherein: The manual pressure pump is connected with the central air bag through a connecting pipeline, and an analog pressure gauge is arranged on the manual pressure pump.

7. The modular cold-heat contact urticaria diagnostic waistband of claim 1, wherein: The mechanical pressure relief valve comprises a valve body, a pre-pressing spring and a silica gel sealing plug, the valve body is connected with the central air bag, the pre-pressing spring and the silica gel sealing plug are arranged in the valve body, one end of the pre-pressing spring is connected with the valve body, the other end of the pre-pressing spring is connected with the silica gel sealing plug, and the silica gel sealing plug seals the pressure relief channel of the valve body under the action of the pre-pressing spring.

8. The modular cold-heat contact urticaria diagnostic waistband of claim 1, wherein The Y-shaped silica gel shunt valve includes a main path end and two branch path ends, the main path end is connected with the central air bag, and the two branch path ends are respectively connected with different independent temperature control units; the edge of the transparent polycarbonate plate is embedded with a UV-LED lamp strip, the UV-LED lamp strip is connected with a magnetic induction coil through a wire, and the magnetic induction coil is matched with a phase change energy storage box fixed on the shape memory alloy main beam.

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