Micro-stopping and jumping liquid temperature changing device based on Peltier

Abstract

The utility model discloses a Peltier-based micro-cardioplegic liquid temperature changing device, which comprises a Peltier temperature changing structure, a cardioplegic liquid guide pipe wound on the periphery of the Peltier temperature changing structure, and a control structure electrically connected with the Peltier temperature changing structure, and the control structure is suitable for controlling the Peltier temperature changing structure to refrigerate or cool by changing the current direction. A Peltier temperature changing structure is arranged, by means of the physical characteristics of forward heating and reverse cooling when a Peltier is powered on, temperature changing operation of heating and cooling can be rapidly completed within a few seconds by changing the current direction when the Peltier is switched between heating and cooling, the temperature changing efficiency is high, the cooling efficiency cannot be affected due to long time, and the temperature changing effect is stable; the temperature changing range of the Peltier is small, the Peltier adapts to the temperature requirements of refrigeration and heating required by the cardioplegic solution, the required power is low when the Peltier changes the temperature, and the temperature changing cost of the cardioplegic solution filling device can be remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a Peltier-based micro-cardioplegic temperature changing device. Background Art

[0002] With the continuous development of new cardioplegic solutions, the use of microcardioplegic perfusion methods has become increasingly popular, and accurately controlling the cardioplegic solution temperature has become a major challenge. Traditional cardioplegic solution temperature control methods are relatively simple: the cardioplegic perfusion device is immersed in a bucket of ice-water mixture to cool it, and the cardioplegic solution is swirled to achieve a wider temperature range. However, this temperature control method is unstable. In particular, by the time the second cardioplegic solution is needed, the ice-water mixture has melted, which may cause the cardioplegic solution to fail to reach the target temperature, significantly reducing the temperature control effect, poor myocardial protection, and even serious consequences such as impaired cardiac resuscitation or myocardial damage.

[0003] Even though the spiral temperature-variable method used in the crystal blood combined with cardioplegic infusion device has improved cooling effectiveness, it requires a high-power water tank for connection, and the cardioplegic infusion device is costly. Currently, most temperature-variable water tanks use refrigerants, which are complex to engineer and result in high failure rates and costs. Utility Model Content

[0004] Therefore, the present invention aims to solve the problems of unstable temperature change effect, high power required for temperature change operation and high temperature change cost in the prior art cardioplegic perfusion temperature change device, thereby providing a Peltier-based micro-cardioplegic temperature change device.

[0005] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0006] A Peltier-based micro-cardioplegic fluid temperature-changing device includes a Peltier temperature-changing structure, a cardioplegic fluid conduit wound around the periphery of the Peltier temperature-changing structure, and a control structure electrically connected to the Peltier temperature-changing structure. The control structure is adapted to control the Peltier temperature-changing structure to cool or refrigerate by changing the direction of current. When the current is in the forward direction, the Peltier temperature-changing structure is in a heating state, and when the current is in the reverse direction, the Peltier temperature-changing structure is in a cooling state.

[0007] Furthermore, the Peltier temperature-changing structure is a cylindrical structure, the interior of the cylindrical structure is hollow, and one end is through, and the control structure is arranged on one end of the cylindrical structure of the Peltier temperature-changing structure.

[0008] Furthermore, a fan is provided inside the Peltier temperature-changing structure, and the fan is suitable for dissipating heat when the Peltier temperature-changing structure is cooling.

[0009] Furthermore, a temperature sensing module electrically connected to the control structure is provided in the Peltier temperature variable structure, a temperature display module electrically connected to the temperature sensing module is provided at one end of the Peltier temperature variable structure, and the control structure includes a temperature control module located at one end of the Peltier temperature variable structure and electrically connected to the temperature sensing module.

[0010] Furthermore, the temperature-changing medium of the Peltier temperature-changing structure is pentanediol.

[0011] Furthermore, the outer surface of the Peltier temperature-changing structure is provided with a spiral groove arranged along its circumference, and the cardioplegic fluid conduit is adapted to be wound around the outer peripheral wall of the Peltier temperature-changing structure along the spiral groove.

[0012] Furthermore, two opposite ends of the Peltier temperature-changing structure are provided with limit baffles, and two limit baffles are provided with clearance grooves.

[0013] Furthermore, the Peltier temperature-variable structure outer shell is provided with a heat-insulating cover.

[0014] Furthermore, one end of the Peltier temperature-changing structure is connected to a bracket, and the bracket is suitable for installing the Peltier temperature-changing structure at a desired position.

[0015] The technical solution of this utility model has the following advantages:

[0016] 1. The Peltier-based micro-cardioplegic fluid temperature-changing device provided by the utility model is provided with a Peltier temperature-changing structure. Through the physical characteristics of "forward heating and reverse cooling" when the Peltier is energized, the heating and cooling temperature-changing operation can be quickly completed within a few seconds by changing the direction of the current when switching between heating and cooling. The temperature-changing efficiency is fast, and the cooling efficiency is not affected by a long time. The temperature-changing effect is stable. The temperature range of the Peltier temperature change is small, which is compatible with the temperature requirements for cooling and heating of the cardioplegic fluid. The power required for the Peltier temperature change is low, which can significantly reduce the temperature-changing cost of the cardioplegic fluid perfusion device.

[0017] 2. The Peltier-based micro-cardioplegic fluid temperature-changing device provided by this utility model comprises a cylindrical structure with a hollow interior and a through-hole at one end. The control structure is disposed on one end of the cylindrical structure. This arrangement, which makes the Peltier structure hollow, allows heat generated during cooling to dissipate through the through-hole, thus reducing the impact of heat accumulation on the Peltier structure's cooling efficiency.

[0018] 3. The Peltier-based micro-cardioplegic fluid temperature-changing device provided by the present invention incorporates a fan within the Peltier temperature-changing structure, which is adapted to dissipate heat during cooling. This arrangement dissipates heat generated by the Peltier temperature-changing structure through the fan, preventing heat accumulation and reduced cooling efficiency.

[0019] 4. The Peltier-based micro-cardioplegic fluid temperature-variable device provided by this utility model uses pentanediol as the temperature-variable medium. This arrangement improves both cooling and heating efficiency. Furthermore, pentanediol is inexpensive, effectively controlling the production and operating costs of the temperature-variable device.

[0020] 5. The Peltier-based micro-cardioplegic fluid temperature-changing device provided by the present invention features a circumferentially arranged spiral groove on the outer surface of the Peltier temperature-changing structure. A cardioplegic fluid conduit is adapted to be wound around the outer wall of the Peltier temperature-changing structure along the spiral groove. This arrangement increases the contact area between the Peltier temperature-changing structure and the cardioplegic fluid conduit, thereby reducing temperature-changing time and improving temperature-changing efficiency. Furthermore, the spiral groove serves to position the cardioplegic fluid conduit wound around the outer wall of the Peltier temperature-changing structure, preventing overlap and compression of the conduits, which could affect the temperature-changing effect.

[0021] 6. The Peltier-based micro-cardioplegic fluid temperature-changing device provided by the present invention features limit baffles at opposite ends of the Peltier temperature-changing structure, each of which is provided with a clearance slot. This arrangement prevents the cardioplegic fluid catheter, which is wound around the Peltier temperature-changing structure, from detaching from the Peltier temperature-changing structure. The clearance slot also facilitates the insertion and removal of the catheter end.

[0022] 7. The Peltier-based micro-cardioplegic fluid temperature-changing device provided by the present invention features a thermal insulation cover over the Peltier temperature-changing structure. This arrangement reduces energy loss when heating and cooling the cardioplegic fluid within the cardioplegic fluid conduit, further improving temperature-changing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A three-dimensional structural diagram of a Peltier-based micro-cardioplegic fluid temperature-changing device provided in an embodiment of the present invention;

[0025] Figure 2 A right side view of a Peltier-based micro-cardioplegic fluid temperature changing device provided in an embodiment of the present invention;

[0026] Figure 3 This is a left view of a Peltier-based micro-cardioplegic fluid temperature changing device provided in an embodiment of the present invention.

[0027] Explanation of the accompanying symbols: 1. Peltier temperature-changing structure; 2. Cardioplegic fluid catheter; 3. Fan; 4. Bracket; 5. Control panel; 6. Temperature display electronic screen; 7. Temperature adjustment display electronic screen; 8. Adjustment button; 9. Switch button. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] 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 positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] like Figure 1-Figure 3The device shown is a Peltier-based micro-cardioplegic fluid temperature-changing device, comprising a Peltier temperature-changing structure 1, a cardioplegic fluid conduit 2 wound around the periphery of the Peltier temperature-changing structure 1, and a control structure electrically connected to the Peltier temperature-changing structure 1. The control structure is adapted to control the Peltier temperature-changing structure 1 to cool or refrigerate by changing the direction of the current. When the current is in the forward direction, the Peltier temperature-changing structure 1 is in the heating state, and when the current is in the reverse direction, the Peltier temperature-changing structure 1 is in the cooling state.

[0033] This Peltier-based micro-cardioplegic fluid temperature-changing device, by setting up a Peltier temperature-changing structure 1 and taking advantage of the physical properties of "forward heating and reverse cooling" when the Peltier is energized, can quickly complete the heating and cooling temperature-changing operation within a few seconds by changing the direction of the current when switching between heating and cooling. The temperature-changing efficiency is fast, and the cooling efficiency will not be affected by a long time, and the temperature-changing effect is stable. The temperature range of the Peltier temperature change is small, which is compatible with the temperature requirements for cooling and heating of the cardioplegic fluid, and the power required for the Peltier temperature change is low, which can significantly reduce the temperature-changing cost of the cardioplegic fluid perfusion device.

[0034] In this embodiment, the Peltier temperature-variable structure 1 is a cylindrical structure with a hollow interior and a through-hole at one end. The control structure is disposed on one end of the cylindrical structure. This arrangement makes the Peltier temperature-variable structure 1 hollow, allowing heat generated during cooling to dissipate from the through-hole end, thereby reducing the impact of heat accumulation on the cooling efficiency of the Peltier temperature-variable structure 1. Specifically, the Peltier temperature-variable structure 1 is a cylindrical structure. In alternative embodiments, the Peltier temperature-variable structure 1 may also have a cylindrical structure of other shapes.

[0035] In this embodiment, a fan 3 is provided within the Peltier temperature-variable structure 1 to dissipate heat during cooling. This arrangement allows heat generated by the Peltier temperature-variable structure 1 during cooling to be dissipated by the fan 3, preventing heat accumulation in the Peltier temperature-variable structure 1 and a reduction in its cooling efficiency.

[0036] In this embodiment, the temperature-changing medium of the Peltier temperature-changing structure 1 is pentanediol. This configuration can improve the cooling and heating efficiency, and pentanediol is inexpensive, which can effectively control the production and use costs of the temperature-changing device.

[0037] In this embodiment, the outer surface of the Peltier temperature-changing structure 1 is provided with spiral grooves arranged along its circumference, and the cardioplegic fluid conduit 2 is adapted to be wound along the spiral grooves around the outer circumference of the Peltier temperature-changing structure 1. This arrangement increases the contact area between the Peltier temperature-changing structure 1 and the cardioplegic fluid conduit 2, thereby reducing temperature change time and improving temperature change efficiency. Furthermore, the spiral grooves serve to limit the position of the cardioplegic fluid conduit 2 wound around the outer circumference of the Peltier temperature-changing structure 1, preventing overlap and compression between the cardioplegic fluid conduits 2, which could affect the temperature change effect.

[0038] In this embodiment (not shown), limit baffles are provided at opposite ends of the Peltier temperature-variable structure 1, each of which has a clearance slot. This arrangement prevents the cardioplegic fluid conduit 2, which is wound around the Peltier temperature-variable structure 1, from detaching from the Peltier temperature-variable structure 1, while the clearance slot facilitates the insertion and removal of the end of the cardioplegic fluid conduit 2.

[0039] In this embodiment (not shown), the Peltier temperature-changing structure 1 is covered with a heat-insulating cover, which can reduce energy loss when heating and cooling the cardioplegic fluid in the cardioplegic fluid conduit 2 and further improve the temperature-changing efficiency.

[0040] In this embodiment, one end of the Peltier temperature-changing structure 1 is connected to a bracket 4 , and the bracket 4 is suitable for installing the Peltier temperature-changing structure 1 at a desired position.

[0041] In this embodiment, a temperature sensing module electrically connected to the control structure is disposed within the Peltier temperature-variable structure 1. A temperature display module electrically connected to the temperature sensing module is disposed at one end of the Peltier temperature-variable structure 1. The control structure includes a temperature control module located at one end of the Peltier temperature-variable structure 1 and electrically connected to the temperature sensing module. Specifically, a control panel 5 is disposed on the outside of one end of the Peltier temperature-variable structure 1. The control panel 5 is equipped with an electronic temperature display 6 electrically connected to the temperature sensing module, an electronic temperature adjustment display 7 electrically connected to the temperature control module, adjustment buttons 8 electrically connected to the temperature control module, and an on / off button 9 for controlling the start and stop of the temperature change of the Peltier temperature-variable structure 1.

[0042] In summary, this Peltier-based micro-cardioplegic fluid temperature-changing device, by setting a Peltier temperature-changing structure 1 and utilizing the physical characteristics of "forward heating and reverse cooling" when the Peltier is energized, can quickly complete the heating and cooling temperature-changing operation within a few seconds by changing the direction of the current when switching between heating and cooling. The temperature-changing efficiency is fast, and the cooling efficiency will not be affected by a long time, and the temperature-changing effect is stable. The temperature range of the Peltier temperature change is small, which is compatible with the temperature requirements for cooling and heating of the cardioplegic fluid, and the power required for the Peltier temperature change is low, which can significantly reduce the cost required for the temperature change of the cardioplegic fluid perfusion device.

[0043] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A Peltier-based microcardioplegic temperature changing device, characterized in that: The invention comprises a Peltier temperature-changing structure (1), a cardioplegic fluid conduit (2) wound around the periphery of the Peltier temperature-changing structure (1), and a control structure electrically connected to the Peltier temperature-changing structure (1). The control structure is suitable for controlling the Peltier temperature-changing structure (1) to cool or refrigerate by changing the direction of the current. When the current is in the forward direction, the Peltier temperature-changing structure (1) is in the heating state, and when the current is in the reverse direction, the Peltier temperature-changing structure (1) is in the cooling state.

2. The Peltier-based micro-cardioplegic fluid temperature changing device according to claim 1, characterized in that: The Peltier temperature-changing structure (1) is a cylindrical structure, the interior of the cylindrical structure is hollow, and one end is through-connected, and the control structure is arranged on one end of the cylindrical structure of the Peltier temperature-changing structure (1).

3. The Peltier-based microcardioplegic temperature changing device according to claim 2, characterized in that: A fan (3) is provided inside the Peltier temperature-changing structure (1), and the fan (3) is suitable for dissipating heat when the Peltier temperature-changing structure (1) is cooling.

4. The Peltier-based micro-cardioplegic fluid temperature changing device according to claim 2, characterized in that: A temperature sensing module electrically connected to the control structure is provided in the Peltier temperature-changing structure (1); a temperature display module electrically connected to the temperature sensing module is provided at one end of the Peltier temperature-changing structure (1); and the control structure includes a temperature control module located at one end of the Peltier temperature-changing structure (1) and electrically connected to the temperature sensing module.

5. The Peltier-based micro-cardioplegic fluid temperature changing device according to claim 1, characterized in that: The temperature-changing medium of the Peltier temperature-changing structure (1) is pentanediol.

6. The Peltier-based microcardioplegic fluid temperature changing device according to claim 1, characterized in that: The outer surface of the Peltier temperature-changing structure (1) is provided with a spiral groove arranged along its circumference, and the cardioplegic fluid conduit (2) is suitable for being wound around the outer peripheral wall of the Peltier temperature-changing structure (1) along the spiral groove.

7. The Peltier-based micro-cardioplegic fluid temperature changing device according to claim 2, characterized in that: Limit baffles are provided at opposite ends of the Peltier temperature-changing structure (1), and both limit baffles are provided with clearance grooves.

8. The Peltier-based microcardioplegic fluid temperature changing device according to claim 7, characterized in that: The outer shell of the Peltier temperature-changing structure (1) is provided with a heat-insulating cover.

9. The Peltier-based micro-cardioplegic fluid temperature changing device according to claim 1, characterized in that: One end of the Peltier temperature-changing structure (1) is connected to a bracket (4), and the bracket (4) is suitable for installing the Peltier temperature-changing structure (1) at a desired position.

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