Wrapping type lung transplantation donor organ liquid cooling protection device

Abstract

The utility model discloses a package type lung transplantation donor organ liquid cooling protection device which comprises a package type liquid cooling bag, the liquid cooling bag comprises a middle piece, an upper piece and a lower piece which are integrally arranged, the upper piece and the lower piece are arranged in the middle of the upper side and the lower side of the middle piece respectively, the liquid cooling bag is of an axial symmetry structure in the vertical direction, the middle piece is cylindrical after being curled, and the lower piece is cylindrical after being curled. The upper piece and the lower piece cover the upper end and the lower end of a cylinder formed by curling the middle piece respectively after being folded, and notches are formed in the left side and the right side of the middle piece respectively; the left side and the right side of the middle piece of the liquid cooling bag are respectively provided with a conduit interface. According to the liquid cooling bag, the liquid cooling bag is arranged to be of the structure of the upper piece, the middle piece and the lower piece, the middle piece is curled to be cylindrical and can wrap the periphery of the donor lung, the upper piece and the lower piece are folded to block the two ends of the cylindrical shape, the donor lung can be completely wrapped, and the surface of the donor lung can be separated from the chest to a great extent so as to maintain the low-temperature state of the donor lung.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, and particularly relates to a wrapped liquid-cooling protection device for a lung transplantation donor organ. Background Art

[0002] In lung transplantation, after the lung transplantation donor organ (also called the donor lung) is removed from the donor's body, in order to protect the donor lung, it is necessary to maintain the low metabolic state of the donor lung and inhibit the formation of oxygen free radicals, etc. Therefore, it is necessary to store and transport the donor lung at a low temperature throughout the process. After obtaining the donor lung, controlling the ischemic time and completing the transplantation surgery as soon as possible are important factors to improve the overall survival rate of patients during the perioperative period. After the donor lung is placed into the recipient's chest cavity, it is still necessary to maintain the donor lung at a low temperature until the structures such as the bronchus and blood vessels are anastomosed during the surgery. Since the recipient's chest cavity remains at about 37°C after anesthesia, it is necessary to separate the donor lung from the inner wall of the chest cavity to maintain the low temperature.

[0003] In order to maintain the low temperature of the donor lung in the recipient's chest cavity, the traditional method is to wrap the donor lung with a gauze soaked in ice water or use crushed ice to lower the temperature of the chest cavity. The main defect of this method is that the water melted from the crushed ice needs to be sucked out, and the gauze needs to be replaced or crushed ice needs to be added again. Repeatedly performing this process during the surgery will significantly delay the surgical process. At the same time, the temperature of the donor lung may also fluctuate, and it cannot be stably maintained within the ideal range of 4 - 8°C. The extension of the transplantation surgery time and the temperature fluctuation of the donor lung may both reduce the transplantation success rate.

[0004] The Chinese utility model patent CN214285202U (publication date: September 28, 2021) discloses an efficient cooling device for lung transplantation. The cooling device body includes a plurality of placement bodies made of biodegradable and harmless materials to the patient's body. The plurality of placement bodies are stacked on top of each other in sequence from bottom to top. Ice chips for reducing the temperature of the donor lung are provided between the adjacent placement bodies up and down. With the biodegradable placement bodies, during the lung transplantation process of the patient, the donor lung can be continuously cooled, and only the water melted from the ice chips needs to be sucked out in time, without having to take out the biodegradable placement bodies from the patient's body. Although the above patent does not need to take out the placement bodies, it has the following disadvantages: First, the shape is similar to a rectangle, and the ice troughs are stacked in multiple layers under the donor lung, so the volume of the cooling device is large, which is not conducive to placing the donor lung in the recipient's chest cavity and may interfere with subsequent surgical operations; Second, the device cannot wrap the donor lung, and only the bottom surface of the donor lung in contact with the device can maintain the low temperature, and the rest of the lung surface is not protected by the cooling device; due to the individual differences in the volume and shape of the donor lung, the actual cooling effect of this device that cannot completely wrap the donor lung is limited. Therefore, the above patent cannot guarantee the temperature of the entire donor lung, has limited practicality, and cannot be effectively promoted and widely used. Content of the Utility Model

[0005] To solve the deficiencies in the above-mentioned prior art, the present utility model provides a wrap-around liquid cooling protection device for lung transplantation donor organs, providing comprehensive cryoprotection for the donor lung.

[0006] To achieve the above technical objectives, the technical solution adopted by the present utility model is:

[0007] A wrap-around liquid cooling protection device for lung transplantation donor organs, including a wrap-around liquid cooling bag. The liquid cooling bag includes a middle sheet, an upper sheet, and a lower sheet that are integrally provided. The upper sheet and the lower sheet are respectively arranged in the middle of the upper and lower sides of the middle sheet. The liquid cooling bag has an axisymmetric structure. After the middle sheet is curled, it forms a cylindrical shape. After the upper sheet and the lower sheet are folded, they respectively cover the upper and lower ends of the cylinder formed by curling the middle sheet. Notches are respectively provided on the left and right sides of the middle sheet of the liquid cooling bag; catheter interfaces are respectively provided on the left and right sides of the middle sheet of the liquid cooling bag.

[0008] Furthermore, a main partition wall is horizontally arranged across the upper sheet, the middle sheet, and the lower sheet along the vertical central axis inside the liquid cooling bag. The main partition wall divides the liquid cooling bag into a left area and a right area. Channels are left between the two ends of the main partition wall and the inner wall of the liquid cooling bag to connect the left area and the right area. A number of secondary partition walls are provided inside the liquid cooling bag. The secondary partition walls are arranged in a staggered manner to divide the space inside the liquid cooling bag into a circuitous coolant flow path.

[0009] Furthermore, the secondary partition wall includes a number of first partition walls. The first partition walls are arranged side by side inside the middle sheet. One end of the first partition wall is connected to the inner wall of the liquid cooling bag, and the other end has a gap with the inner wall on the opposite side of the liquid cooling bag.

[0010] Furthermore, the secondary partition wall further includes a second partition wall. The second partition wall is arranged inside the upper sheet and the lower sheet of the liquid cooling bag. The second partition wall is arranged in a divergent manner with the center of the upper sheet or the lower sheet as the center point. One end is connected to the inner wall of the liquid cooling bag or the main partition wall, and the other end has a gap with the main partition wall on the opposite side or the inner wall of the liquid cooling bag.

[0011] Furthermore, a number of dot-shaped partition columns are provided inside the liquid cooling bag. The partition columns are arranged in a cross pattern.

[0012] Preferably, the main partition wall, the secondary partition wall, and the partition columns are formed by hot pressing.

[0013] Preferably, the middle sheet of the liquid cooling bag is in the shape of a trapezoid with a narrow upper part and a wide lower part. After curling, it forms a conical cylinder with a small upper opening and a large lower opening.

[0014] Preferably, the upper sheet and the lower sheet of the liquid cooling bag are in the shape of semi-ellipses.

[0015] Furthermore, define the front surface of the liquid cooling bag as the lung contact surface and the back surface as the thoracic cavity contact surface. The thoracic cavity contact surface is made of heat-insulating material, and the lung contact surface is made of medical water-proof material.

[0016] Preferably, the notch is semicircular, and after the middle piece is curled, the two semicircular notches close together to form a circle.

[0017] The beneficial effects of the utility model are:

[0018] The utility model discloses a wrapped lung transplant donor organ liquid cooling protection device, which arranges a liquid cooling bag in the structure of an upper piece, a middle piece and a lower piece. The middle piece is curled to form a tube shape and can cover the periphery of the donor lung. The upper piece and the lower piece are folded to seal the two ends of the tube shape, so that the donor lung can be fully covered and the surface of the donor lung can be separated from the chest cavity to a great extent to maintain the low temperature state of the donor lung.

[0019] The utility model discloses a wrapped lung transplant donor organ liquid cooling protection device, wherein a main partition wall and a secondary partition wall are arranged in a liquid cooling bag, and the internal space is divided into a circuitous cooling liquid flow channel, so that the liquid cooling bag and the lung transplant donor organ can perform a comprehensive and sufficient heat exchange, and the low temperature state of the donor lung can be maintained; the partition column can further disrupt the liquid flow and slow down the liquid flow speed.

[0020] The utility model discloses a wrapped lung transplant donor organ liquid cooling protection device, wherein the chest contact surface is made of a thermal insulation material, thereby reducing the risk of hypothermia of the recipient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the internal structure of an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model in use;

[0024] Figure 3 This is a schematic diagram of the arrangement of the embodiment of the utility model when covering the right lung;

[0025] Figure 4 It is a schematic diagram of the arrangement of the embodiment of the utility model when covering the left lung.

[0026] Figure numerals: 11 - middle piece, 12 - upper piece, 13 - lower piece, 14 - notch, 15 - conduit interface, 16 - main partition wall, 17 - secondary partition wall, 18 - partition column. DETAILED DESCRIPTION

[0027] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians of the art without making creative work are within the scope of protection of the present application.

[0028] A wrapped lung transplant donor organ liquid cooling protection device, such as Figures 1 - 4 As shown, it includes a wrapped liquid cooling bag, which includes an integrally arranged middle piece 11, an upper piece 12 and a lower piece 13, the upper piece 12 and the lower piece 13 are respectively arranged in the middle of the upper and lower sides of the middle piece 11, and the liquid cooling bag is an axisymmetric structure, the middle piece 11 is curled into a cylindrical shape, and the upper piece 12 and the lower piece 13 are folded to cover the upper and lower ends of the cylindrical shape curled by the middle piece, respectively, for fully wrapping the donor organ of the lung transplantation, and the left and right sides of the middle piece 11 are respectively provided with notches 14, and the two notches 14 are closed after the middle piece 11 is curled, leaving an operating space for surgical anastomosis at the hilum of the lung. The left and right sides of the middle piece 11 of the liquid cooling bag are respectively provided with catheter interfaces 15 for receiving and outputting cooling liquid.

[0029] A main partition wall 16 is provided inside the liquid cooling bag along the vertical central axis across the upper piece 12, the middle piece 11, and the lower piece 13. The main partition wall 16 divides the liquid cooling bag into a left area and a right area. A channel is left between the two ends of the main partition wall 16 and the inner wall of the liquid cooling bag to connect the left area and the right area. A plurality of secondary partition walls 17 are provided inside the liquid cooling bag. The secondary partition walls 17 are staggered to divide the space inside the liquid cooling bag into a circuitous cooling liquid flow channel. The cooling liquid enters from the catheter interface on one side, flows along the circuitous cooling liquid flow channel, and is discharged from the catheter interface on the other side to perform heat exchange with the lung transplant donor organ to maintain the low temperature state of the lung transplant donor organ.

[0030] Preferably, the secondary partition wall 17 includes a plurality of first partition walls, which are arranged side by side inside the middle piece 11, one end of the first partition wall is connected to the inner wall of the liquid cooling bag, and the other end leaves a gap with the inner wall on the opposite side of the liquid cooling bag. The secondary partition wall 17 also includes a second partition wall, which is arranged inside the upper piece 12 and the lower piece 13 of the liquid cooling bag, and the second partition wall takes the center of the upper piece 12 or the lower piece 13 as a dot and is arranged in a divergent shape, one end is connected to the inner wall of the liquid cooling bag or the main partition wall 17, and the other end leaves a gap with the opposite main partition wall or the inner wall of the liquid cooling bag. Furthermore, a plurality of point-shaped partition columns 18 are arranged in the liquid cooling bag, and the partition columns 18 are arranged crosswise so that the coolant flows slowly in the liquid cooling bag. Preferably, the main partition wall 16, the secondary partition wall 17, and the partition columns 18 are formed by hot pressing.

[0031] Furthermore, the middle piece 11 of the liquid cooling bag is in a trapezoidal shape with a narrow top and a wide bottom, and after curling, it is in a conical cylindrical shape with a small top opening and a large bottom opening, which can better fit the three-dimensional shape of the lung transplant donor organ. The upper piece 12 and the lower piece 13 of the liquid cooling bag are in a semi-elliptical shape, and the middle piece 11 covers the front, back and outer sides of the donor lung after curling, the upper piece 12 covers the lung apex after folding, and the lower piece 13 covers the lung bottom after folding, which fully covers the lung transplant donor organ with liquid cooling protection, and can greatly separate the surface of the donor lung from the chest cavity to maintain the low temperature state of the donor lung.

[0032] Furthermore, the front side of the liquid cooling bag is defined as the lung contact surface, and the back side is defined as the chest contact surface. The lung contact surface is made of medical waterproof material to prevent leakage of cooling liquid, and the chest contact surface is made of thermal insulation material to reduce the risk of hypothermia for patients.

[0033] Preferably, the notch 14 is semicircular, and after the middle piece is curled, the two semicircular notches are closed to form a circle.

[0034] The volume and shape of the donor lung vary from person to person. Since the two sides of the human chest cavity are approximately mirror-symmetrical, the liquid cooling protection device of the utility model has an axisymmetric structure. The catheter interfaces on both sides can be switched to liquid inlet or outlet, and can be used in both left and right lung transplants. Specifically, when working, the liquid cooling bag is rolled into a three-dimensional structure, such as Figure 3 As shown in the figure, when the donor lung is the right lung, the donor lung is placed on the right area of ​​the lung contact surface of the liquid cooling bag, the hilum of the donor lung is placed in the notch area, and then the left area is turned over and curled to cover the top of the donor lung, and then the upper and lower sheets are folded to form a covering; when the donor lung is the left lung, the donor lung is placed on the left area of ​​the lung contact surface of the liquid cooling bag, and the hilum of the donor lung is placed in the notch area, as shown in the figure. Figure 4As shown, the right area is then flipped and curled to cover the donor lung, and then the upper and lower sheets are folded to form a wrap. After forming the wrap, one of the catheter interfaces of the liquid cooling bag is located on the dorsal side (the side near the ground) of the supine recipient, that is, below the donor lung, which serves as the liquid inlet, and the other catheter interface is located on the front chest side of the supine recipient, that is, above the donor lung, as the liquid outlet. That is, in the working state, the coolant enters from the bottom and exits from the top in the liquid cooling bag, and slowly flows along the "S-shaped" coolant flow path inside the liquid cooling bag to maintain the low temperature state of the donor lung.

[0035] This device does not require an ice maker to prepare ice sand or ice cubes. The coolant is physiological saline pre-cooled to 4°C. It can be used by connecting the liquid inlet of this device with an infusion bottle and an infusion hose with a speed-limiting roller. The coolant slowly flows inside the liquid cooling bag, and there is no need to manually suck out the water after the ice melts from the chest cavity. Compared with the traditional ice and gauze cooling, the operation steps are streamlined, the operation time is shorter, and the practicability is enhanced. During the operation, the temperature of the outflowing coolant is monitored in real time, and by adjusting the liquid flow rate or replacing the coolant with a different temperature, it is ensured that the working temperature of the liquid cooling bag is within the ideal range of 4-8°C.

[0036] Certainly, the present utility model may also have many other embodiments. Without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model, but these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present utility model.

Claims

1. A wrapped lung transplant donor organ liquid cooling protection device, characterized in that: The invention comprises a wrapped liquid cooling bag, wherein the liquid cooling bag comprises an integrally arranged middle piece (11), an upper piece (12) and a lower piece (13), wherein the upper piece (12) and the lower piece (13) are respectively arranged in the middle of the upper and lower sides of the middle piece (11), and the liquid cooling bag has an axially symmetrical structure, wherein the middle piece (11) is curled into a cylindrical shape, and the upper piece (12) and the lower piece (13) are folded and respectively cover the upper and lower ends of the cylindrical shape curled by the middle piece, and the left and right sides of the middle piece (11) are respectively provided with notches (14); and the left and right sides of the middle piece (11) of the liquid cooling bag are respectively provided with catheter interfaces (15).

2. The wrapped lung transplant donor organ liquid cooling protection device according to claim 1, characterized in that: A main partition wall (16) is provided in the liquid cooling bag along the vertical center axis, spanning the upper piece (12), the middle piece (11), and the lower piece (13). The main partition wall (16) divides the liquid cooling bag into a left area and a right area. A channel is left between the two ends of the main partition wall (16) and the inner wall of the liquid cooling bag to connect the left area and the right area. A plurality of secondary partition walls (17) are provided in the liquid cooling bag. The secondary partition walls (17) are staggered to divide the space in the liquid cooling bag into circuitous cooling liquid flow channels.

3. The wrapped lung transplant donor organ liquid cooling protection device according to claim 2, characterized in that: The secondary partition wall (17) includes a plurality of primary partition walls, which are arranged side by side inside the middle piece (11), one end of the primary partition wall is connected to the inner wall of the liquid cooling bag, and the other end of the primary partition wall leaves a gap with the inner wall on the opposite side of the liquid cooling bag.

4. The wrapped lung transplant donor organ liquid cooling protection device according to claim 3 is characterized in that: The secondary partition wall (17) also includes a second partition wall, which is arranged inside the upper piece (12) and the lower piece (13) of the liquid cooling bag. The second partition wall is arranged in a divergent shape with the center of the upper piece (12) or the lower piece (13) as the dot, one end of which is connected to the inner wall of the liquid cooling bag or the main partition wall, and the other end of which leaves a gap with the opposite main partition wall or the inner wall of the liquid cooling bag.

5. The wrapped lung transplant donor organ liquid cooling protection device according to claim 4 is characterized in that: A plurality of point-shaped partition columns (18) are arranged in the liquid cooling bag, and the partition columns (18) are arranged crosswise.

6. The wrapped lung transplant donor organ liquid cooling protection device according to claim 5, characterized in that: The main partition wall (16), the secondary partition wall (17) and the partition column (18) are formed by hot pressing.

7. The wrapped lung transplant donor organ liquid cooling protection device according to claim 1, characterized in that: The middle piece (11) of the liquid cooling bag is in the shape of a trapezoid with a narrow top and a wide bottom, and after curling, it is in the shape of a cone with a small top opening and a large bottom opening.

8. The wrapped lung transplant donor organ liquid cooling protection device according to claim 7, characterized in that: The upper piece (12) and the lower piece (13) of the liquid cooling bag are in a semi-elliptical shape.

9. The wrapped lung transplant donor organ liquid cooling protection device according to claim 1, characterized in that: The front side of the liquid cooling bag is defined as the lung contact surface, and the back side is defined as the chest contact surface. The chest contact surface is made of a thermal insulation material, and the lung contact surface is made of a medical waterproof material.

10. The wrapped lung transplant donor organ liquid cooling protection device according to claim 1, characterized in that: The notch (14) is semicircular, and after the middle piece is curled, the two semicircular notches are closed together to form a circle.

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