Cooling device for cardioplegic liquid

Abstract

The utility model relates to a cardioplegic liquid cooling device which comprises a water tank, a cooling device and a controller. The water tank is provided with a cardioplegic liquid inlet and a cardioplegic liquid outlet; the cooling coil pipe is immersed below the liquid level of the saline solution; two ends of the cooling coil pipe are respectively connected with the cardioplegic liquid inlet and the cardioplegic liquid outlet; the refrigerating device is connected with the water tank, and the refrigerating device is used for cooling the saline solution; the stirring device is located at the bottom of the water tank, and the stirring device is used for stirring the saline solution; and the control panel is connected with the refrigerating device and is used for controlling the refrigerating temperature of the refrigerating device.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a cardioplegic fluid cooling device. Background Art

[0002] The use of cardioplegic solutions to achieve electrical mechanical cardiac arrest during cardiovascular surgery not only provides a clear surgical field and facilitates surgical manipulation but, more importantly, reduces myocardial ischemia-reperfusion injury. Since then, cardioplegic solutions and myocardial ischemia-reperfusion injury have been a hot topic of research. Currently, over 800 cardioplegic solutions have been developed, and they have become one of the most commonly used and important myocardial protective measures in cardiovascular surgery.

[0003] Hypothermia is one of the most commonly used myocardial protection methods. A key requirement is cooling the cardioplegic solution to a low temperature of approximately 4°C. Current cardioplegic cooling devices use ice water baths. However, due to the slow cooling rate of ice water baths, the cooling time is prolonged. Therefore, the cardioplegic solution must flow through a spiral pipe approximately 10 meters long in the ice water bath for cooling. This means that the pipe must be pre-filled with a large amount of cardioplegic solution, resulting in significant waste. Improving the cooling capacity of cardioplegic cooling devices could avoid the waste of pre-filled cardioplegic solution. Utility Model Content

[0004] The utility model provides a cardioplegic fluid cooling device to solve the problems of low cooling rate and large waste of cardioplegic fluid in existing devices. The purpose of the utility model is achieved through the following technical solutions.

[0005] A cardioplegic fluid cooling device, comprising:

[0006] A water tank, wherein saline solution is provided in the water tank; a cardioplegic solution inlet and a cardioplegic solution outlet are provided on the water tank;

[0007] A cooling coil, the cooling coil being immersed below the liquid level of the saline solution; two ends of the cooling coil being connected to the cardioplegic solution inlet and the cardioplegic solution outlet, respectively;

[0008] A refrigeration device, connected to the water tank, for cooling the salt water;

[0009] A stirring device, the stirring device is located at the bottom of the water tank, and the stirring device is used to stir the salt water;

[0010] A control panel is connected to the refrigeration device and is used to control the refrigeration temperature of the refrigeration device.

[0011] Optionally, a transparent portion is provided on the side wall of the water tank, and a liquid level scale line is provided on the transparent portion.

[0012] Optionally, the cooling coil is a plastic tube.

[0013] Optionally, the refrigeration device adopts a compression refrigeration device or a semiconductor refrigeration device.

[0014] Optionally, the stirring device is a magnetic stirring device.

[0015] Optionally, a temperature sensor is provided at the cardioplegic fluid outlet, the temperature sensor is connected to the control panel, and a cardioplegic fluid temperature display is provided on the control panel.

[0016] Optionally, the refrigeration device is located at the bottom of the water tank, and casters are provided at the bottom of the refrigeration device.

[0017] Optionally, a water tank opening is provided on the top of the water tank, and a water tank cover is provided on the water tank opening.

[0018] Optionally, a methylene blue dropping device is provided on the upper part of the water tank, and the methylene blue dropping device includes a methylene blue liquid storage tank. The methylene blue liquid storage tank is provided with a syringe pump, and the syringe pump is connected to the control panel.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This utility model uses salt water for cooling, and utilizes a refrigeration device to maintain the salt water temperature at -15°C. Compared to existing ice water, this eliminates the need for pre-made ice cubes and significantly improves the temperature change effect, significantly reducing the amount of pre-filled cardioplegia fluid and reducing waste. Furthermore, a stirring device is provided at the bottom of the water tank, which not only automatically stirs and evenly dissolves the salt water during preparation, but also maintains a uniform temperature within the water tank during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an appearance diagram of the utility model.

[0022] Figure 2 It is a schematic diagram of the cooling coil arrangement of the present utility model.

[0023] Figure 3 It is a schematic diagram of the water tank structure of the present utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose and technical solution of the present invention more clearly understood, the present invention is further described in detail. The experimental methods described in the following examples are all conventional methods unless otherwise specified. If no specific techniques or conditions are specified in the examples, they are carried out according to the techniques or conditions described in the literature in the field or according to the product instructions. The reagents and materials described are all commercially available unless otherwise specified.

[0025] Example 1

[0026] like Figures 1 to 3 A cardioplegic fluid cooling device is shown, comprising:

[0027] A water tank 2 is provided with saline solution 4. A cardioplegic solution inlet 7 and an outlet 8 are provided on the water tank 2. To facilitate accurate addition of water when preparing the saline solution, a transparent portion is provided on the sidewall of the water tank 2, with liquid level markings on the portion. Water is simply added to the mark. A water tank opening is provided at the top of the water tank, which is capped with a water tank cover 6.

[0028] The cooling coil 3 is immersed below the liquid level of the saline solution 4; both ends of the cooling coil are connected to the cardioplegic solution inlet 7 and the cardioplegic solution outlet 8 respectively; the cooling coil adopts a PE plastic tube.

[0029] A refrigeration device 1 is connected to the water tank and is used to cool the salt water. As shown in the figure, the refrigeration device 1 is located at the bottom of the water tank 2 and is equipped with casters. The refrigeration device can be a compression refrigeration device or a semiconductor refrigeration device.

[0030] A stirring device 9 is located at the bottom of the water tank and is used to stir the salt water; Figure 3 As shown, the stirring device is a magnetic stirring device. The stirring device is connected to the control panel.

[0031] A control panel 5 is connected to the refrigeration device and is used to control the refrigeration temperature of the refrigeration device.

[0032] A temperature sensor is provided at the outlet of the cardioplegic fluid, and the temperature sensor is connected to the control panel 5 , on which a cardioplegic fluid temperature display is provided, which can be used to read the cardioplegic fluid temperature in real time.

[0033] Optionally, a methylene blue dripping device is provided above the water tank. The device includes a methylene blue storage tank 10, which is provided with a syringe pump 11, and the syringe pump is connected to the control panel. The device drips methylene blue into the saline solution to dye the saline solution. If the water tank or pipeline is damaged, the damage can be quickly identified based on the color of the dye, facilitating immediate repair.

[0034] The process of using the device is as follows:

[0035] First, open the water tank cover 6, put weighed salt into the water tank, then add water to the water tank, and observe through the transparent part to add water to the scale.

[0036] Use the control panel to start the procedure for preparing saline solution, stir with the stirring device and add methylene blue solution dropwise to the water with the methylene blue adding device.

[0037] After the salt water is prepared, use the control panel to control the refrigeration device to cool the salt water to as low as -15 to -20℃.

[0038] The cardioplegic solution is inputted from the cardioplegic solution inlet 7, and the cardioplegic solution outlet 8 outputs the cooled cardioplegic solution.

[0039] The utility model adopts salt water for cooling, and utilizes a refrigeration device to maintain the temperature of the salt water at -15°C. Compared with the existing ice water, it not only eliminates the trouble of pre-making ice cubes, but also greatly improves the temperature change effect, can significantly shorten the length of the cooling coil, reduce the pre-filled amount of the arrest fluid, and reduce waste.

[0040] Furthermore, it should be noted that the above are merely preferred embodiments of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cardioplegic fluid cooling device, characterized in that: include: A water tank, wherein saline solution is provided in the water tank; a cardioplegic solution inlet and a cardioplegic solution outlet are provided on the water tank; A cooling coil, the cooling coil being immersed below the liquid level of the saline solution; two ends of the cooling coil being connected to the cardioplegic solution inlet and the cardioplegic solution outlet, respectively; A refrigeration device, connected to the water tank, for cooling the salt water; A stirring device, the stirring device is located at the bottom of the water tank, and the stirring device is used to stir the salt water; A control panel is connected to the refrigeration device and is used to control the refrigeration temperature of the refrigeration device.

2. The cardioplegic fluid cooling device according to claim 1, characterized in that: A transparent portion is provided on the side wall of the water tank, and a liquid level scale line is provided on the transparent portion.

3. The cardioplegic fluid cooling device according to claim 1, characterized in that: The cooling coil is a plastic tube.

4. The cardioplegic fluid cooling device according to claim 1, characterized in that: The refrigeration device adopts a compression refrigeration device or a semiconductor refrigeration device.

5. The cardioplegic fluid cooling device according to claim 1, characterized in that: The stirring device adopts a magnetic stirring device.

6. The cardioplegic fluid cooling device according to claim 1, characterized in that: A temperature sensor is provided at the outlet of the cardioplegic fluid. The temperature sensor is connected to the control panel. A cardioplegic fluid temperature display is provided on the control panel.

7. The cardioplegic fluid cooling device according to claim 1, characterized in that: The refrigeration device is located at the bottom of the water tank, and casters are provided at the bottom of the refrigeration device.

8. The cardioplegic fluid cooling device according to claim 1, characterized in that: A water tank opening is provided on the top of the water tank, and a water tank cover is provided on the water tank opening.

9. The cardioplegic fluid cooling device according to claim 1, characterized in that: A methylene blue dropping device is provided on the upper part of the water tank. The methylene blue dropping device comprises a methylene blue liquid storage tank. The methylene blue liquid storage tank is provided with a syringe pump, and the syringe pump is connected to the control panel.

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