Medical infusion line warming and venting control

Abstract

The application discloses a medical infusion pipeline heating and exhaust control instrument, and relates to the technical field of medical instruments, and the technical points of the application include a controller main body, a storage cylinder is arranged on the controller main body, a plug post is fixedly connected to the back of the storage cylinder and is in sliding connection with the controller main body, a base plate is fixed to the end of the plug post away from the storage cylinder, a vibration spring is fixed between the base plate and the controller main body and is located on the outer side of the plug post, a vibration piece is fixed to the base plate, a plurality of heating pieces are fixedly arranged on the inner wall of the storage cylinder, and a clamping part for clamping a burette is arranged on the heating piece. The heating structure is arranged at the burette, and the blood is heated uniformly through cooperation of vibration, so that the low-temperature blood transfusion can not cause human body discomfort, air bubble can be accelerated to separate and float to realize self-exhaustion, and the risk of air embolism can be effectively prevented. In addition, the heating pieces can flexibly adjust the clamping range, are suitable for burettes of various specifications, the anti-falling part can prevent the burette from falling off, and the blood transfusion heating operation can be stably and continuously carried out.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a heating and exhaust control device for medical infusion lines. Background Technology

[0002] In clinical blood transfusion therapy, stored blood and reclaimed autologous blood are typically preserved using cryopreservation, resulting in blood temperatures far below normal human physiological temperatures. Direct transfusion of this chilled blood can cause sudden vasoconstriction and slowed blood flow, easily triggering adverse reactions such as chills, palpitations, and limb numbness. In severe cases, it can lead to microcirculatory disturbances and increased myocardial load, posing a significant threat to the lives of critically ill or frail patients. Therefore, in clinical blood transfusion procedures, the blood in the transfusion tubing must be heated to a constant temperature to match the body's physiological needs, ensuring the safety and stability of the transfusion therapy.

[0003] Currently, most mainstream blood transfusion tubing on the market uses downstream heating, where the heating element is placed at the thin transfusion tubing downstream of the Mofe drip line to warm the blood. This heating method has inherent technical flaws. When blood is rapidly heated within the sealed, narrow transfusion tubing, dissolved air inside the blood will precipitate out in large quantities due to the increased temperature and decreased solubility, forming tiny bubbles. Because the downstream transfusion tubing is small and has no space to store air, the precipitated microbubbles cannot rise and separate on their own. They will continue to flow downwards with the blood, directly entering the human circulatory system. This not only affects transfusion accuracy but also greatly increases the risk of serious medical complications such as air embolism, chest tightness, and arrhythmia. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a medical infusion tubing heating and exhaust control device, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a medical infusion tubing heating and exhaust control device, comprising a controller body, a storage tube on the controller body, a plug that is slidably connected to the controller body and fixed on the back of the storage tube, a base plate fixed at the end of the plug away from the storage tube, a vibration spring located outside the plug and the controller body fixed between the base plate and the controller body, a vibrating element fixed on the base plate, and a plurality of heating plates fixedly installed on the inner wall of the storage tube, the heating plates having a clamping part for clamping the PVC dropper.

[0006] Preferably, the heating element is further provided with two deformation parts and one anti-detachment part, with the deformation parts arranged at both ends of the heating element and the anti-detachment part located directly below the clamping part.

[0007] Preferably, a reinforcing plate is fixed on the back of the heating element, located on the clamping part and the anti-detachment part, and a telescopic spring is fixed between the reinforcing plate and the storage tube.

[0008] Preferably, the inner cavity of the storage tube is slidably fitted with an extension tube; the storage tube has wire holes that correspond one-to-one with the reinforcing plate; a traction rope is connected between the extension tube and the reinforcing plate, and the traction rope passes through the wire holes at the corresponding positions.

[0009] Preferably, the extension cylinder has several evenly distributed inflation chambers inside, and elastic membranes are fixedly provided on the inner and outer walls of the inflation chambers; an airflow channel is provided below the inflation chambers; an air box is fixedly installed at the bottom of the extension cylinder, and the inner cavity of the air box is connected to the airflow channel.

[0010] Preferably, a guide post is fixedly installed in the inner cavity of the gas box; a push plate is slidably and sealingly connected to the guide post; the push plate divides the inner cavity of the gas box into a gas-containing cavity and a movable cavity from top to bottom; a pressing rod is threadedly connected to the bottom of the gas box, and the movable end of the pressing rod extends into the movable cavity.

[0011] Preferably, the inner wall of the storage tube is further fixedly provided with a base column; the inner cavity of the base column is threadedly connected with a telescopic rod; a Velcro fastener is fixedly installed on the telescopic rod; and several temperature sensor patches are fixedly attached to the inner side wall of the Velcro fastener.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention sets the heating position at the Maofei drip tube by setting up a storage tube, insertion column, vibration spring, vibration element and heating plate. The vibration makes the blood heated evenly, avoiding discomfort such as chills and palpitations caused by low temperature blood transfusion. At the same time, it accelerates the precipitation and floating of air bubbles in the blood, and relies on the Maofei drip tube cavity to achieve self-venting, reducing the medical risks such as air embolism caused by air bubbles entering the human body.

[0013] 2. By setting a heating plate with a deformation part, a reinforcing plate and a telescopic spring, the size of the clamping area can be flexibly adjusted. This not only allows for the stable clamping of the Mofe dropper and the completion of blood heating, but also allows for the adaptation to various sizes of Mofe droppers, thus broadening the application range of the device.

[0014] 3. This invention provides an anti-detachment part on the heating element to support and limit the bottom of the Maofei drip tube, effectively preventing the Maofei drip tube from falling off the clamping structure during equipment vibration, and ensuring continuous and stable blood heating and infusion operations. Attached Figure Description

[0015] Figure 1 This is a complete structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of a partial cross-sectional structure inside the building; Figure 3 This is a schematic diagram of the structure of the heating element, extension cylinder, and air box of the present invention; Figure 4 For the present invention Figure 3 A partial cross-sectional structural diagram; Figure 5 For the present invention Figure 4 A partially enlarged structural diagram; Figure 6 For the present invention Figure 4 Enlarged structural diagram at point A above; Figure 7 For the present invention Figure 4 Enlarged structural diagram at point B above; Figure 8 This is a schematic diagram of the telescopic rod, Velcro, and temperature sensor patch of the present invention; Figure 9 This is a schematic diagram of the structure of the elastic membrane and extension tube of the present invention; Figure 10 For the present invention Figure 9 A partial cross-sectional structural diagram; Figure 11 For the present invention Figure 10 Enlarged structural diagram at point C; Figure 12 For the present invention Figure 10 Another perspective cross-sectional structural diagram; Figure 13 For the present invention Figure 12 Enlarged structural diagram at point D; Figure 14 This is a schematic diagram of the structure of the clamping part, the deformation part, and the anti-detachment part of the present invention; Figure 15 This is a schematic diagram of the reinforcing plate of the present invention.

[0016] In the picture: 1. Controller body; 2. Storage tube; 3. Insert post; 4. Base plate; 5. Vibrating component; 6. Heating element; 7. Clamping part; 8. Deformation part; 9. Anti-detachment part; 10. Reinforcing plate; 11. Telescopic spring; 12. Extension tube; 13. Wire hole; 14. Traction rope; 15. Inflation chamber; 16. Airflow channel; 17. Air box; 18. Guide post; 19. Push plate; 20. Air chamber; 21. Movable chamber; 22. Extrusion rod; 23. Base post; 24. Telescopic rod; 25. Velcro; 26. Elastic membrane; 27. Temperature sensor patch; 28. Vibration spring. Detailed Implementation

[0017] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0018] This invention provides a technical solution: Please see Figures 1-15 A medical infusion tubing heating and exhaust controller includes a controller body 1, a storage tube 2 on the controller body 1, a plug 3 that is slidably connected to the controller body 1 fixed on the back of the storage tube 2, a base plate 4 fixed at the end of the plug 3 away from the storage tube 2, a vibration spring 28 located outside the plug 3 fixed between the base plate 4 and the controller body 1, a vibrating element 5 fixed on the base plate 4, and several heating plates 6 fixedly installed on the inner wall of the storage tube 2, with a clamping part 7 for clamping the dropper on the heating plate 6.

[0019] With this design, during clinical blood warming and transfusion operations, the operator first places the Mofetil dropper in the infusion line into the clamping part 7 corresponding to the heating element 6, ensuring that the transfusion branches connected to the upper and lower ends of the Mofetil dropper are completely inserted through the storage cylinder 2, thus completing the assembly and fixation of the infusion line and the device. Then, the controller body 1 is activated, and the device synchronously drives the vibrating element 5 and the heating element 6 into operation. The heating element 6 adheres to the outer wall of the Mofetil dropper, directly warming the low-temperature blood inside the tube, adjusting the blood temperature to a suitable range for human transfusion, and preventing various adverse reactions caused by low-temperature blood entering the body. Simultaneously, the vibrating element 5, fixed on the base plate 4, continuously outputs a regular vibration force along the direction of the insertion post 3. This force is transmitted through the insertion post 3 and the vibration spring 28 located outside the insertion post 3, causing the storage cylinder 2 and the Mofetil dropper clamped inside to produce stable reciprocating vibrations. The blood inside the Mofetil dropper continuously flows and agitates under the vibration, effectively improving the problem of uneven local heating of static blood, allowing heat to be rapidly conducted and diffused within the blood, achieving uniform heating. As blood heats up, the dissolved air inside decreases in solubility, causing it to continuously release tiny bubbles. Continuous vibration further accelerates the separation of these bubbles from the blood, causing them to coalesce and float upwards, eventually converging in the cavity at the top of the Mofe dropper. Utilizing the dropper's built-in cavity for gas-liquid separation effectively traps the heated bubbles at the top of the dropper, minimizing the likelihood of them being carried downwards with the blood flow and entering the bloodstream.

[0020] The controller body 1 houses the entire electronic control system, which can provide power to the heating element 6 and the vibrating element 5, and simultaneously connect to the temperature sensor patch 27 to complete temperature data acquisition.

[0021] It should be added that, when using the device, it should be done in accordance with... Figure 1 The device is fixed to a specific bracket to ensure the Mofe drip tube is vertically downward, allowing blood to be transported under gravity. Because the entire device vibrates, the section of the infusion tubing near the puncture needle requires an independent fixing structure to limit and secure it, preventing the vibration from being transmitted upwards and avoiding needle wobbling or displacement, thus ensuring a stable transfusion process and patient safety. During actual blood warming transfusion operations, the Mofe drip tube is clamped and fixed inside the device. In this type of drip tube, the upper half is typically hollow while the lower half retains blood. The naturally formed upper cavity serves as a temporary containment area for heated and precipitated air bubbles. The top of the Mofe drip tube is usually pre-installed with a dedicated vent pipe. In normal use, medical staff only need to periodically open this vent pipe to smoothly expel the air bubbles precipitated after the blood is heated. An electric valve can also be added to the vent pipe for periodic self-venting. The vibrating component 5 is preferably a vibration motor, capable of continuously outputting regular vibrations, and relies on the base plate 4, the insert 3, and the vibration spring 28 to form a transmission mechanism. The moving structure causes the storage cylinder 2 and the Mofe drip tube clamped on it to reciprocate, thereby accelerating the rise of tiny air bubbles inside the blood and enhancing the gas-liquid separation effect. All heating elements 6 are connected to the controller body 1 through external wires. To achieve closed-loop precise control of heating temperature, several temperature sensors can be arranged on the back of each heating element 6. The sensors will collect the temperature data of the heating area in real time and transmit it back to the controller body 1. The device can then dynamically adjust the heating power according to the clinically preset temperature parameters to stably control the blood heating temperature within a safe range and avoid overheating or underheating. The heating elements 6 are designed and manufactured according to medical standards in terms of material and structure. The whole is based on medical-grade high-resilience liquid silicone rubber, and the core heating unit is embedded in the base of the base with an etched nickel-chromium alloy foil heating element, which can achieve gentle and uniform heating of the blood in the Mofe drip tube. The inner sides of each clamping part 7 are reserved with a gap to adapt to the shape of the drip tube. This gap is a clamping area specifically used for clamping and fixing the Mofe drip tube, which can stably complete the positioning and assembly of the infusion tubing components.

[0022] Specifically, the heating element 6 is also provided with two deformation parts 8 and one anti-detachment part 9. The two deformation parts 8 are respectively arranged at both ends of the heating element 6, and the anti-detachment part 9 is located directly below the clamping part 7.

[0023] This design allows the deformation section 8 to have elastic deformation capabilities. When assembling the MF-fed dropper, the deformation section 8 can adaptively deform according to the shape and specifications of the MF-fed dropper, thereby adjusting the size of the clamping area enclosed by each set of clamping sections 7. This allows the clamping structure to adapt to various MF-fed droppers with different outer diameters for positioning and installation, significantly improving the versatility of the device. During operation, the vibrating component 5 drives the storage cylinder 2 and the MF-fed dropper clamped inside to continuously reciprocate. To prevent the MF-fed dropper from shifting and falling off the clamping section 7 under vibration, an anti-detachment section 9 is provided directly below the clamping section 7. The anti-detachment section 9 supports and limits the bottom of the MF-fed dropper, forming an effective constraint from the bottom, ensuring that the MF-fed dropper remains stably placed within the clamping area under continuous vibration, guaranteeing continuous and reliable blood transfusion warming operations.

[0024] Specifically, a reinforcing plate 10 is fixed on the back of the heating element 6, located on the clamping part 7 and the anti-detachment part 9, and a telescopic spring 11 is fixed between the reinforcing plate 10 and the storage tube 2.

[0025] This design allows the telescopic spring 11 to retract inwards using its own elastic force, thereby reducing the clamping area formed by the inner sides of each clamping part 7. This enables the clamping structure to adapt to and securely clamp smaller-diameter droppers, further expanding the device's adaptability. Simultaneously, the reinforcing plate 10 provides rigid support and deformation restriction for the clamping part 7 and the anti-detachment part 9. During the elastic pulling of the telescopic spring 11, it effectively prevents the clamping part 7 and the anti-detachment part 9 from shifting position or changing shape. This ensures that only the deformation parts 8 at both ends of the heating element 6 undergo elastic deformation under external force, allowing the entire clamping structure to maintain its designed shape and ensuring stable and reliable clamping operation.

[0026] It should be added that, attached Figure 5 The telescopic spring 11 is in a compressed state. When the external force is removed, the telescopic spring 11 returns to its original relaxed state. The anti-detachment parts 9 distributed on each heating element 6 will stick together in pairs, and the overall clamping structure returns to its initial assembly form.

[0027] Specifically, an extension tube 12 is slidably fitted into the inner cavity of the storage tube 2; the storage tube 2 has wire holes 13 corresponding to the reinforcing plate 10; a traction rope 14 is connected between the extension tube 12 and the reinforcing plate 10, and the traction rope 14 passes through the wire holes 13 at the corresponding positions; several evenly distributed inflation chambers 15 are opened inside the extension tube 12, and elastic membranes 26 are fixedly provided on the inner and outer walls of the inflation chambers 15; an airflow channel 16 is opened below the inflation chambers 15; an air box 17 is fixedly installed at the bottom of the extension tube 12, and the inner cavity of the air box 17 is connected to the airflow channel 16; a guide post 18 is fixedly installed in the inner cavity of the air box 17; a push plate 19 is slidably and sealingly connected to the guide post 18; the push plate 19 divides the inner cavity of the air box 17 from top to bottom into an air-containing chamber 20 and a movable chamber 21; a pressing rod 22 is threadedly connected to the bottom of the air box 17, and the movable end of the pressing rod 22 extends into the movable chamber 21.

[0028] This design avoids excessive clamping force from the telescopic spring 11, which could compress the dropper and cause structural deformation, thus ensuring normal blood delivery within the tubing. When it is necessary to adjust the size of the clamping area formed by the clamping parts 7 to accommodate different sizes of droppers, the operator can pull the extension tube 12 downwards along the inner cavity of the storage tube 2. The extension tube 12 will drive the traction rope 14 connected to it to move downwards synchronously. The traction rope 14 passes through the wire holes 13 on the storage tube 2 that correspond one-to-one with the reinforcing plate 10, thereby pulling the reinforcing plate 10 and the heating element 6 together towards the inner wall of the storage tube 2. During this process, the telescopic spring 11 is gradually compressed, and the clamping space between the clamping parts 7 changes accordingly. After the clamping part 7 is adjusted to match the size of the target Mofee dropper, the spacing needs to be properly controlled to prevent excessive clamping pressure from causing deformation of the Mofee dropper. Then, manually rotate the squeezing rod 22 at the bottom of the gas box 17. The squeezing rod 22 pushes the push plate 19 in the movable cavity 21 upward. The push plate 19 slides upward along the guide post 18 in a sealed manner, continuously squeezing the inert gas inside the gas chamber 20. The pressurized inert gas is introduced into each inflation chamber 15 inside the extension tube 12 through the airflow channel 16. The elastic membranes 26 set on the inner and outer sides of the inflation chambers 15 expand outward under the action of air pressure. The expanded elastic membranes 26 tightly adhere to and squeeze the inner wall of the storage tube 2, using the friction of the contact surface to limit and fix the extension tube 12. After the extension tube 12 is locked, the size of the clamping area formed by the clamping part 7 remains stable, which can reliably clamp the Mofee dropper and completely eliminate the hidden danger of the dropper deformation caused by excessive elasticity of the telescopic spring 11, ensuring a stable and smooth blood delivery process.

[0029] It should be further explained that the gas chamber 20 inside the gas box 17 is pre-filled with inert gas. This type of gas is chemically stable and does not easily undergo oxidation or deterioration, ensuring the long-term stable operation of the entire pneumatic transmission and locking structure. The elastic membrane 26 is made of rubber. Rubber has excellent elastic deformation capability and surface adhesion, and can expand uniformly under pneumatic drive, stably abutting against the inner wall of the storage cylinder 2 to achieve reliable limiting of the extension cylinder 12. The Mofe drip tubes used in clinical blood transfusions are generally made of medical-grade PVC, TPU, TPE and other medical polymer materials. Although various materials can adapt to the normal clamping conditions of the device, structural deformation will occur when the clamping force is too large. Once the Mofe drip tube deforms, its internal effective flow cross-sectional area will shrink accordingly, the blood flow resistance will increase significantly, directly causing blood flow rate disturbance and reduced infusion flow. In severe cases of deformation, it can also cause tubing blockage and interruption of blood delivery.

[0030] Specifically, the inner wall of the storage tube 2 is also fixedly provided with a base column 23; the inner cavity of the base column 23 is threadedly connected with a telescopic rod 24; a Velcro 25 is fixedly installed on the telescopic rod 24; and several temperature sensor patches 27 are fixedly attached to the inner side wall of the Velcro 25.

[0031] This design utilizes the characteristics of threaded transmission; rotating the telescopic rod 24 adjusts its extension length and spatial position, thereby moving the Velcro 25 fixed to the telescopic rod 24 to a designated position beside the infusion tubing. After the Velcro 25 is wrapped around the outer wall of the infusion tubing for fixation, several temperature sensor patches 27 located inside the Velcro 25 can fit tightly against the outer wall of the tubing, stably collecting real-time temperature signals of the blood output from inside the tubing, thus achieving full-process monitoring of the output blood temperature.

[0032] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A medical infusion line heating and exhaust control device, comprising a controller body (1), characterized in that: The controller body (1) is provided with a storage tube (2). A plug (3) that is slidably connected to the controller body (1) is fixed on the back of the storage tube (2). A base plate (4) is fixed at the end of the plug (3) away from the storage tube (2). A vibration spring (28) located outside the plug (3) is fixed between the base plate (4) and the controller body (1). A vibrating element (5) is fixed on the base plate (4). Several heating plates (6) are fixedly installed on the inner wall of the storage tube (2). A clamping part (7) for clamping the Maofei dropper is provided on the heating plate (6).

2. The medical infusion tubing heating and exhaust control device according to claim 1, characterized in that: The heating element (6) is also provided with two deformation parts (8) and one anti-detachment part (9). The deformation parts (8) are respectively arranged at both ends of the heating element (6), and the anti-detachment part (9) is located directly below the clamping part (7).

3. The medical infusion line heating and exhaust control device according to claim 1, characterized in that: The back of the heating element (6) is fixed with a reinforcing plate (10) located on the clamping part (7) and the anti-detachment part (9), and a telescopic spring (11) is fixed between the reinforcing plate (10) and the storage tube (2).

4. The medical infusion line heating and exhaust control device according to claim 1, characterized in that: The inner cavity of the storage tube (2) is slidably fitted with an extension tube (12); the storage tube (2) has wire holes (13) that correspond one-to-one with the reinforcing plate (10); a traction rope (14) is connected between the extension tube (12) and the reinforcing plate (10), and the traction rope (14) passes through the wire holes (13) at the corresponding positions.

5. The medical infusion line heating and exhaust control device according to claim 4, characterized in that: The extension cylinder (12) has several evenly distributed air chambers (15) inside, and elastic membranes (26) are fixedly provided on the inner and outer walls of the air chambers (15); an airflow channel (16) is provided below the air chambers (15); an air box (17) is fixedly installed at the bottom of the extension cylinder (12), and the inner cavity of the air box (17) is connected to the airflow channel (16).

6. The medical infusion line heating and exhaust control device according to claim 5, characterized in that: The air box (17) is fixedly installed with a guide post (18); a push plate (19) is slidably and sealed on the guide post (18); the push plate (19) divides the air box (17) into an air-containing chamber (20) and an active chamber (21) from top to bottom; a pressing rod (22) is threadedly connected to the bottom of the air box (17), and the active end of the pressing rod (22) extends into the active chamber (21).

7. The medical infusion line heating and exhaust control device according to claim 1, characterized in that: The inner wall of the storage tube (2) is also fixedly provided with a base column (23); the inner cavity of the base column (23) is threadedly connected with a telescopic rod (24); a Velcro (25) is fixedly installed on the telescopic rod (24); several temperature sensor patches (27) are fixedly attached to the inner side wall of the Velcro (25).

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