Disposable self-heating constant-temperature infusion tube heater
By designing a disposable self-heating constant temperature infusion tube heater, and using a clamping structure and phase change material to control the temperature, the problems of cross-infection, limited application scenarios, and uncontrollable temperature of existing infusion heating devices are solved, achieving a safe and stable heating effect and a comfortable infusion temperature.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-09
- Publication Date
- 2026-04-14
AI Technical Summary
Existing infusion heating devices have problems such as cross-infection risk, limited application scenarios, uncontrollable temperature, poor heating effect, and inability to stabilize at a comfortable temperature for the human body.
A disposable self-heating constant temperature infusion tube heater was designed. It adopts a clamping structure and includes a heat-insulating outer layer, an iron powder self-heating layer, a polyethylene glycol constant temperature layer and a thermally conductive bonding layer. The infusion tube is fixed by a hinge and snap-locking structure. It uses medical-grade reduced iron powder and phase change materials to achieve power-free heating and temperature control.
It achieves safety without cross-infection, is not limited by usage scenarios, maintains a stable temperature of 36-37℃, heats evenly and fits tightly, and is suitable for infusion needs in various environments, especially improving the comfort of children and elderly patients.
Smart Images
Figure CN121846432A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of medical device technology, specifically relating to a disposable, self-heating, and temperature-controlled infusion tube heating device. It is mainly used to heat the drug solution at a constant temperature during clinical intravenous infusion to avoid discomfort caused by low-temperature drug solution irritating blood vessels. Background Technology
[0002] During clinical intravenous infusion, especially in cold winter, the direct administration of low-temperature medication into the patient's body can easily cause adverse reactions such as vasospasm, cold limbs, pain, and chills. This effect is particularly pronounced in children, the elderly, and patients with weak constitutions.
[0003] Existing infusion heating devices have the following shortcomings: 1. Some heating devices are reusable products, which can easily cause cross-infection and do not meet the requirements for hospital infection control; 2. Electric heating devices require an external power source or battery, which limits their application scenarios and poses safety hazards such as overheating and leakage. 3. The temperature of ordinary disposable heating packs is uncontrollable, which can easily lead to problems such as excessively high temperature or large temperature fluctuations; 4. The heating element is not tightly fitted to the infusion tube, resulting in low heat utilization and poor heating effect; 5. Unable to maintain the temperature of the medicine solution within the comfortable range of 36-37℃, which is close to the human body temperature.
[0004] To address the shortcomings of existing technologies, this invention proposes a disposable self-heating constant-temperature infusion tube heater to solve safety, temperature control, fit, and infection control issues in clinical applications. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a self-heating constant temperature infusion tube heater that is simple in structure, easy to use, disposable, requires no power supply, and can stably control the temperature at 36-37℃.
[0006] The disposable self-heating constant temperature infusion tube heater disclosed in this invention includes: an upper clamping body, a lower clamping body, a hinged structure, a snap-locking structure, a heat-insulating outer layer, an iron powder self-heating layer, a polyethylene glycol constant temperature layer, a thermally conductive bonding layer, and an infusion tube slot.
[0007] The upper and lower clamping bodies are connected by a hinge structure, and the two ends are closed and fixed by a snap-locking structure. Both the upper and lower clamping bodies are equipped with arc-shaped infusion tube slots for tight fit against the outer wall of the infusion tube; The clamping body consists of, from the outside in: a heat-insulating outer layer, an iron powder self-heating layer, a polyethylene glycol constant temperature layer, and a thermally conductive bonding layer; The iron powder self-heating layer uses a composition that can oxidize and release heat when exposed to air (medical-grade reduced iron powder, medical activated carbon, inorganic salts, vermiculite, purified water, etc.), which can start heating without an external power source.
[0008] The constant temperature layer uses medical-grade polyethylene glycol phase change material with a phase change temperature of 36-37℃, which keeps the heating temperature stable within the human body's comfortable temperature range.
[0009] The thermally conductive bonding layer is used to uniformly transfer a stable temperature to the infusion tubing.
[0010] The heat-insulating outer layer is used to reduce heat loss and prevent the outer casing from overheating.
[0011] The beneficial effects of this invention: 1. Single-use only, safe and without cross-infection. Single-use, disposable, meeting clinical infection control requirements.
[0012] 2. No power supply required, applicable in various scenarios. It relies on air self-heating and can be used in wards, transportation, emergency rooms, and the field.
[0013] 3. Precisely maintains a constant temperature of 36-37℃, close to human body temperature. It uses phase change materials for temperature control, ensuring it is neither too hot nor too cold, and the temperature remains stable, providing high comfort, making it especially suitable for pediatric patients.
[0014] 4. Clamping structure ensures tight fit and uniform heating. The arc-shaped groove tightly grips the infusion tube, resulting in high heat utilization and stable and reliable heating effect.
[0015] 5. Simple structure, easy operation, and low cost It heats up instantly with a tear and is ready to use with a clip, making it suitable for large-scale production and clinical application.
[0016] 6. Features locking buckles at both ends to prevent accidental detachment. With its hinged structure, it clamps securely and is not easily displaced or detached when the patient moves. Attached image description: To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below: Figure 1 This is a side view of the structure of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the right-side structure of the present invention; Figure 4 This is a schematic diagram of the AA cross-sectional structure of the present invention; Figure 5This is a partially enlarged schematic diagram of the hinge structure and the snap-locking structure of the present invention; Figure 6 This is a partially enlarged schematic diagram of the layered structure of the clamping body of the present invention.
[0017] The attached diagram lists the components represented by each number as follows: 1. Upper clamping body; 2. Lower clamping body; 3. Hinged structure; 4. Buckle locking structure; 5. Arc-shaped infusion tube clamp; 6. Thermal insulation outer layer; 7. Iron powder self-heating layer; 8. Polyethylene glycol thermostatic layer; 9. Thermally conductive bonding layer; 10. Infusion tubing. Detailed Implementation
[0018] The present invention will be further described in detail below with reference to specific embodiments. Example
[0019] A disposable self-heating constant temperature infusion tube heater includes an upper clamping body, a lower clamping body, a hinged structure, a snap-locking structure, an infusion tube slot, a thermally conductive bonding layer, a polyethylene glycol constant temperature layer, an iron powder self-heating layer, and a heat-insulating outer layer.
[0020] The clamping body consists of, from the outside in: a heat-insulating outer layer, an iron powder self-heating layer, a polyethylene glycol constant temperature layer, and a thermally conductive bonding layer; Both the upper and lower clamping bodies have arc-shaped infusion tube slots on their inner sides for tightly wrapping the infusion tube.
[0021] Before use: The entire disposable self-heating constant temperature infusion tube heater is sealed and individually packaged, which completely isolates the iron powder self-heating layer from the air, avoids premature start-up and heat release, and ensures that the product is sterile and intact, making it easy to store and transport.
[0022] When using: 1. Tear open the sealed packaging, air enters, and the iron powder self-heating layer starts to oxidize and release heat; 2. Directly place the infusion tube into the arc-shaped infusion tube slot, close the upper and lower clamps, and fasten the buckles at both ends to ensure that the heater and the infusion tube fit tightly together; 3. The heat generated by the iron powder self-heating layer is first transferred to the inner polyethylene glycol constant temperature layer, which stabilizes and regulates the heating temperature to maintain at 36-37℃. 4. The stabilized heat is then evenly transferred to the infusion solution through the thermally conductive bonding layer, so that the temperature of the solution is stabilized within the target range.
[0023] In this embodiment, the heating time is ≥4 hours, and the temperature is stable, which can meet the needs of clinical infusion. Example
[0024] Based on Example 1, by optimizing the proportions of each component (medical-grade reduced iron powder, medical activated carbon, inorganic salts, vermiculite, purified water, etc.) in the iron powder self-heating layer, the heating start-up is made smoother and the duration is longer, thereby improving the applicability and safety of the product in low-temperature environments of -10℃ to -25℃ and in power-free scenarios.
[0025] Iron powder self-heating layer: Composed of medical-grade reduced iron powder, medical-grade activated carbon, inorganic salts, vermiculite, purified water, etc. By adjusting the proportion of each component, the reaction kinetics are optimized, resulting in a smoother heating start-up and a longer duration. It can operate stably in low-temperature environments from -10℃ to -25℃, providing sufficient and continuous heat for the polyethylene glycol constant temperature layer.
[0026] Thermostatic layer: Made of medical-grade polyethylene glycol phase change material, with a phase change temperature set at 36-37℃, which can accurately stabilize the temperature of the drug solution and avoid temperature fluctuations.
[0027] Clinical applications: 1. Routine clinical scenarios: Suitable for intravenous infusion in winter or when the ambient temperature is low, effectively avoiding symptoms such as vascular irritation, chills, and discomfort caused by excessively cold medication, thus improving patient comfort; 2. Special emergency scenarios: It can be used in extreme environments without power supply (such as wilderness rescue, earthquakes, war and other public health emergencies). It can provide constant temperature infusion support for the injured or patients without external power supply or batteries, ensuring the continuity and safety of medical treatment.
[0028] The preferred embodiments of the present invention disclosed above are only for the purpose of illustrating the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation described.
[0029] Those skilled in the art can make various modifications and equivalent substitutions to the above embodiments without departing from the spirit and scope of the present invention, and such modifications and substitutions should also be considered to fall within the protection scope of the present invention.
Claims
1. A disposable self-heating constant temperature infusion tube heater, characterized in that, include: Upper clamping body, lower clamping body, hinge structure, snap-locking structure, heat insulation outer layer, iron powder self-heating layer, polyethylene glycol constant temperature layer, thermally conductive bonding layer and infusion tube slot; The upper and lower clamping bodies are connected by a hinge structure and are closed and fixed by a locking structure at both ends; Both the upper and lower clamping bodies are provided with arc-shaped infusion tube slots for tight fit with the outer wall of the infusion tube. The clamping body consists of, from the outside in, a heat-insulating outer layer, an iron powder self-heating layer, a polyethylene glycol constant temperature layer, and a thermally conductive bonding layer.
2. The disposable self-heating constant temperature infusion tube heater according to claim 1, characterized in that, The iron powder self-heating layer uses a composition that can oxidize and release heat when exposed to air (medical-grade reduced iron powder, medical activated carbon, inorganic salts, vermiculite, and purified water, etc.), which can start heating without an external power source.
3. The disposable self-heating constant temperature infusion tube heater according to claim 1, characterized in that, The polyethylene glycol constant temperature layer uses medical-grade polyethylene glycol phase change material with a phase change temperature of 36-37℃, which keeps the heating temperature stable within the human body's comfortable temperature range.
4. The disposable self-heating constant temperature infusion tube heater according to claim 1, characterized in that, The thermally conductive bonding layer is used to uniformly transfer a stable temperature to the infusion tube, and the thermally insulating outer layer is used to reduce heat loss and prevent the outer shell temperature from becoming too high.
5. The disposable self-heating constant temperature infusion tube heater according to claim 1, characterized in that, The heater is designed for single use, for individual use only, and is discarded after use, thus meeting the requirements for clinical infection control.
6. The disposable self-heating constant temperature infusion tube heater according to claim 1, characterized in that, The heater can be used in extreme environments without power supply, including in emergency public health events such as wilderness rescue, earthquakes, and war, to provide constant temperature infusion support for the wounded or patients.