A kidney bag for kidney transplantation surgery

Abstract

This invention relates to the field of medical device technology, specifically to a kidney bag for kidney transplant surgery, comprising a transparent plastic shell, inside which, from the outside to the inside, are arranged a donor kidney shape adaptation component, a temperature control component, and a moisture-retaining component. A kidney pedicle access port is provided on one side of the plastic shell. The donor kidney shape adaptation component includes a flexible airbag adaptation layer, which is equipped with a fit assessment unit for real-time acquisition of inflation resistance parameters. The temperature control component includes a serpentine temperature control pipeline, which is adapted to connect to a temperature control liquid circulation delivery unit. The moisture-retaining component includes a moisture-retaining matrix layer. This invention achieves adaptive fit loading of donor kidneys of different shapes and sizes through the combination of the airbag adaptation layer and the fit assessment unit. The addition of the moisture-retaining component specifically addresses the deficiency of humidity homeostasis control in existing donor kidney protection technologies, creating a highly adaptable and temperature- and humidity-controlled donor kidney protection microenvironment for kidney transplant surgery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a kidney bag for kidney transplant surgery. Background Technology

[0002] A kidney bag used in kidney transplant surgery is a protective container designed to prevent mechanical damage to the kidney during the procedure and to maintain a low-temperature ischemic state. It provides an isolated, clean, and low-temperature microenvironment for the donor kidney, ensuring the viability of kidney tissue.

[0003] In the prior art, for example, CN112674930A proposes a kidney temperature control bag, which uses a flexible bag body to fit the kidney to be transplanted and combined with a temperature control system to maintain the kidney at a suitable temperature while facilitating intraoperative grasping, so that the kidney can be adjusted to a suitable position for suturing during the operation.

[0004] However, in clinical practice, while the aforementioned kidney protection bag with integrated active temperature control system represents a technological breakthrough in temperature control and intraoperative adaptability compared to the traditional passive hypothermia maintenance method using ice and gauze, it falls short in regulating the humidity homeostasis of the donor kidney. Humidity homeostasis, as a key microenvironmental homeostasis parameter regulating the metabolic activity of renal parenchymal cells and maintaining the structural integrity of nephron tissue, has irreplaceable clinical value in prolonging the cold ischemia tolerance time of the donor kidney and reducing the risk of postoperative primary graft failure. Therefore, it is necessary to propose a kidney bag for kidney transplantation surgery to address these shortcomings. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a kidney bag for kidney transplant surgery. By combining an air-filled adaptation layer with a fit assessment unit, it achieves adaptive fit and loading of donor kidneys of different shapes and sizes. The addition of a moisturizing component specifically addresses the deficiency of humidity homeostasis control in existing donor kidney protection technologies, thereby creating a highly adaptable and temperature- and humidity-controlled donor kidney protection microenvironment for kidney transplant surgery.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a kidney bag for kidney transplantation surgery, comprising a transparent plastic shell, wherein the plastic shell is provided with a kidney shape adaptation component, a temperature control component and a moisture retention component in sequence from the outside to the inside, and a kidney pedicle operation port is provided on one side of the plastic shell;

[0007] The kidney shape adaptation component includes a flexible airbag adaptation layer. The outer wall of the airbag adaptation layer is fixedly connected to the inner wall of the plastic shell. The airbag adaptation layer is configured with an inflation component. The inflation component is equipped with a fit assessment unit for real-time acquisition of inflation resistance parameters. The fit assessment unit assesses the fit between the airbag adaptation layer and the surface of the kidney based on the inflation resistance parameters. The fit assessment unit is signal-connected to a controller.

[0008] The temperature control component includes a serpentine temperature control pipeline that is slidably connected to the inner wall of the airbag adapter layer. The temperature control pipeline is connected to a temperature control liquid circulation and delivery unit, which is used to circulate and deliver liquid into the temperature control pipeline and regulate the temperature of the delivered liquid. The temperature control liquid circulation and delivery unit is signal-connected to the controller.

[0009] The moisturizing component includes a moisturizing matrix layer, which is fixedly connected to the inner wall of the airbag adapter layer, and the moisturizing matrix layer is pre-impregnated with moisturizing gel.

[0010] The technical principle of the above solution is as follows: This solution uses a transparent plastic shell as the main load-bearing structure. Inside the plastic shell, from the outside to the inside, a kidney shape adaptation component, a temperature control component, and a moisturizing component are arranged sequentially. Through the design of the kidney shape adaptation component, the inflation of the airbag adaptation layer is used to achieve flexible fit with the surface of kidneys of different shapes and sizes. The fit degree evaluation unit configured in the airbag adaptation layer collects the resistance parameters in real time during the inflation process, and the controller performs data analysis to judge the fit state between the airbag adaptation layer and the surface of the kidney. Secondly, through the design of the temperature control component, the temperature-controlled liquid is delivered through the temperature-controlled pipeline to achieve dynamic temperature management of the kidney. Finally, through the design of the moisturizing component, the moisturizing matrix pre-impregnated with moisturizing gel provides continuous humidity support for the kidney.

[0011] The above approach has the following beneficial effects:

[0012] 1. In response to the technical deficiency of existing donor kidney bag technology that does not consider the steady-state regulation of donor kidney humidity, this solution provides continuous humidity maintenance for the donor kidney through a moisturizing component. The moisturizing matrix layer of pre-impregnated moisturizing gel is used to regulate the metabolic activity of renal parenchymal cells, maintain the integrity of nephron tissue structure, prolong the cold ischemia tolerance time of the donor kidney, and reduce the risk of primary graft failure after surgery.

[0013] 2. To address the technical shortcomings of existing fixed-size kidney bags that cannot adapt to individual morphological differences and are prone to gaps in the fit, this solution uses a kidney shape adaptation component to achieve adaptive fit to kidneys of different sizes and shapes. By utilizing the characteristics of the airbag adaptation layer, on the one hand, the gap between the kidney and the protective structure is reduced, avoiding uneven temperature control and moisture blind spots. On the other hand, it reduces the risk of damage such as dryness and temperature fluctuations to the local tissues of the kidney due to exposure or poor fit.

[0014] 3. The transparent plastic shell design of this solution, combined with the design of the renal pedicle operating port, provides the surgeon with a clear and unobstructed anatomical view of the renal pedicle, facilitating intraoperative renal pedicle manipulation, and also allows for rapid removal of the wrapping of the donor kidney after surgery, improving the convenience and efficiency of the surgical procedure.

[0015] Furthermore, the plastic shell includes two symmetrical and detachably connected unit shells. Each unit shell has a semi-circular pre-reserved groove. When the two unit shells are assembled and locked together, the two pre-reserved grooves enclose and form the renal pedicle operating port.

[0016] Beneficial effects: The symmetrical and detachable unit shell structure design allows for rapid assembly and wrapping of the donor kidney during kidney transplantation surgery, providing the surgeon with a clear anatomical view of the kidney pedicle to facilitate kidney pedicle manipulation. Postoperatively, the wrapping of the donor kidney can be quickly separated and removed, improving the convenience and flexibility of the surgical procedure.

[0017] Furthermore, the airbag adapter layer includes symmetrical deformation bladders, which are fixedly connected to the inner sidewalls of the corresponding unit housings. Each deformation bladder is provided with an inflation port and a depressurization port, and each depressurization port is equipped with a sealing plug.

[0018] Beneficial effects: The design of the deformable sac allows it to expand through inflation, flexibly adapting to the contours of different donor kidneys. This facilitates rapid adjustment of the deformable sac's state before and after surgery, improving the flexibility and adaptability of donor kidney fitting. It also lays the foundation for temperature control and humidification procedures, reducing the delay in the effect of temperature control and humidification on the donor kidney.

[0019] Furthermore, the inflation component includes an air pump, the output end of which is connected to an air supply and pressure testing pipeline. The air supply and pressure testing pipeline includes a main supply pipe, a shunt connector, and two secondary supply pipes. The two secondary supply pipes are respectively connected to the corresponding inflation interface, and the main supply pipe is equipped with a one-way air valve.

[0020] The fit assessment unit includes a differential pressure sensor built into the main delivery pipe. The differential pressure sensor is used to collect and analyze the inflation pressure change data in the main delivery pipe during the air pump inflation process in real time. The controller obtains the inflation pressure change data and converts it into the inflation resistance change data of the air pump.

[0021] Beneficial effects: The deformation bladder is inflated by an air pump in conjunction with an air delivery and pressure measurement pipeline. The differential pressure sensor in the main delivery pipeline collects the air pressure change data in real time during the inflation process. The controller converts this data into changes in inflation resistance to assess the degree of fit. This control of the inflation process ensures that the deformation bladder fits the donor kidney without gaps, while avoiding over-inflation that could cause pressure damage to the donor kidney, thus improving the accuracy and safety of fit control.

[0022] Furthermore, the differential pressure sensing device includes a pre-positioned differential pressure sensor and a post-positioned differential pressure sensor. The pre-positioned differential pressure sensor is located in the main delivery pipe between the one-way valve and the air pump, and the post-positioned differential pressure sensor is located in the main delivery pipe between the one-way valve and the connector.

[0023] Beneficial effects: By installing a pre-pressure differential sensor and a post-pressure differential sensor in the main delivery tube, the initial supply air pressure at the air pump output end and the proximal air pressure before entering the deformation bladder can be collected respectively. By collecting air pressure at two points and combining it with differential pressure analysis, the change in inflation resistance after the deformation bladder is attached to the donor kidney can be determined, which improves the accuracy and reliability of donor kidney fit assessment and reduces the risk of damage to the donor kidney caused by excessive pressure.

[0024] Furthermore, the temperature control pipeline includes symmetrically distributed circulation pipes in a serpentine shape, with two circulation pipes slidably connected to the inner wall of the corresponding deformation bladder.

[0025] The temperature-controlled liquid circulation delivery unit includes a carrier box, which is equipped with a circulation pump. The input end of the circulation pump is connected to a signal distributor, which is also connected to a room temperature liquid box and a cold liquid box. The signal distributor is connected to the controller via a signal, and all circulation pipes are connected to the output end of the circulation pump.

[0026] Beneficial effects: The symmetrically distributed serpentine circulation tube serves as a temperature control pipeline. The liquid supply to the ambient temperature liquid box and the cold liquid box is switched by a signal distributor to regulate the temperature of the donor kidney according to the needs of different stages of kidney transplantation surgery. The sliding adaptation design of the circulation tube with the shape-adaptive capsule ensures the smooth circulation of the temperature control fluid and maintains a close fit with the surface of the donor kidney, improving the uniformity and flexibility of temperature control.

[0027] Furthermore, several limiting collars are fixedly connected to the deformation bladder, and the circulation tubes all pass through the corresponding limiting collars.

[0028] Beneficial effects: The sliding connection design addresses the issue of the deformed sac causing unpredictable circulatory tube shape, reducing the probability of the circulatory tube being stretched, twisted, or squeezed and folded due to the deformation of the sac, ensuring the continuous smooth circulation of the temperature control fluid, while maintaining a tight fit between the circulatory tube and the donor kidney surface, thus ensuring the stability of the temperature control effect.

[0029] Furthermore, each of the reserved slots is equipped with a semi-circular arc-shaped ventilation guide block, which is connected to the corresponding deformation bladder. Each ventilation guide block is equipped with several elastic pressure-bearing valves. The pressure-bearing valves are normally closed in the initial state. After the deformation bladder is inflated and attached to the surface of the donor kidney, when the deformation bladder is compressed and the internal air pressure exceeds the threshold of the elastic closing valve, the pressure-bearing valves automatically open. Each ventilation guide block is equipped with several air outlets.

[0030] The surface of the ventilation guide block is detachably equipped with a wet film carrier ring. When the pressure-controlled valve is opened, the gas flows from the deformation bladder to the air outlet, and then through the wet film carrier ring to perform wet film evaporation atomization and humidification on the kidney pedicle at the kidney pedicle operating port.

[0031] Beneficial effects: The design of the ventilation guide block, combined with the initial normally closed pressure-controlled valve, automatically opens when the deformation bladder inflates and adheres to the donor kidney, causing the internal air pressure to exceed the threshold. Gas flows through the vent of the ventilation guide block and through the pre-wetted moisturizing membrane ring to atomize and moisturize the donor kidney pedicle at the operating port. This specifically addresses the problem of the kidney pedicle being exposed outside the protective bag and easily affected by the dry environment. It creates a dynamic moist environment for the kidney pedicle without interfering with the surgical field of vision, maintains the physiological osmotic pressure balance of the kidney pedicle cells, reduces the risk of inflammatory factor release and tissue adhesion, and the detachable moisturizing membrane ring can be quickly replaced according to the duration of the operation to ensure continuous humidity protection.

[0032] Furthermore, all pressure-operated valve components include several elastic diaphragm valve plates.

[0033] Beneficial effects: In the initial state, the membrane valve is tightly closed. When the internal air pressure of the deformable bladder exceeds the threshold of the elastic closing valve, the valve is opened under pressure. The membrane valve controls the timing of gas conduction, ensuring that the renal pedicle moisturizing function can only be activated after the deformable bladder is fully attached to the contour of the donor kidney. This maintains the stability of the deformable bladder inflation and attachment process while ensuring the timeliness and effectiveness of renal pedicle moisturizing.

[0034] Furthermore, each deformable capsule comprises several interconnected unit capsules.

[0035] Beneficial effects: Relying on the independent deformation characteristics of each unit bladder, it can more accurately adapt to the irregular contour of the donor kidney surface during inflation, optimize the fit and pressure distribution, reduce the probability of local excessive pressure damaging the donor kidney tissue, and at the same time, when a single unit bladder is damaged, the remaining normal unit bladders can still maintain the overall protective function, improving the fault tolerance and reliability of the device.

[0036] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the kidney bag for kidney transplantation surgery according to the present invention;

[0038] Figure 2 This is an axonometric sectional view of the airbag adaptation layer structure in an embodiment of the kidney bag for kidney transplantation surgery of the present invention;

[0039] Figure 3 This is a schematic diagram showing the connection between the air pump and the airbag adapter layer in an embodiment of the kidney bag for kidney transplantation surgery of the present invention;

[0040] Figure 4 for Figure 3 A partial cross-sectional view of the differential pressure sensor arrangement at point A in the middle;

[0041] Figure 5 This is an axonometric sectional view of the temperature control pipeline arrangement in an embodiment of the kidney bag for kidney transplantation surgery of the present invention;

[0042] Figure 6 This is a schematic diagram showing the connection between the temperature-controlled pipeline and the temperature-controlled fluid circulation delivery unit in an embodiment of the kidney bag for kidney transplantation surgery of the present invention;

[0043] Figure 7 This is an axonometric sectional view of the installation of the moisturizing matrix layer in an embodiment of the kidney bag for kidney transplantation surgery of the present invention;

[0044] Figure 8 This is a partially enlarged schematic diagram showing the arrangement of the ventilation and drainage block in an embodiment of the kidney bag for kidney transplantation surgery of the present invention.

[0045] The reference numerals in the accompanying drawings include: 1. Plastic outer shell; 101. Unit shell; 2. Kidney pedicle operating port; 201. Reserved groove; 3. Airbag adapter layer; 301. Deformable bladder; 3011. Unit bladder body; 4. Inflation interface; 5. Pressure relief interface; 6. Sealing plug; 7. Air pump; 8. Main delivery pipe; 9. Diverter connector; 10. Secondary delivery pipe; 11. One-way air valve; 12. Pre-positioned differential pressure sensor; 13. Post-positioned differential pressure sensor; 14. Temperature control pipeline; 1401. Circulation pipe; 1402. Limiting collar; 15. Support box; 16. Moisturizing matrix layer; 17. Ventilation guide block; 18. Membrane valve; 19. Air outlet; 20. Wet membrane carrier ring. Detailed Implementation

[0046] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] The following detailed description illustrates the specific implementation method:

[0050] Example 1:

[0051] This embodiment provides a kidney bag for kidney transplant surgery, specifically as follows: Figure 1 and Figure 2 As shown, the device includes a transparent plastic shell 1, with a renal pedicle access port 2 on one side. The plastic shell 1 comprises two symmetrical and detachably connected unit shells 101, each with a semi-circular pre-drilled groove 201. When the two unit shells 101 are assembled and locked together, the two pre-drilled grooves 201 enclose the renal pedicle access port 2. The split plastic shell 1 design allows the two unit shells 101 to be assembled to wrap the donor kidney during kidney transplantation surgery. The highly transparent plastic shell 101 provides the surgeon with a clear and unobstructed anatomical view of the renal pedicle, allowing the surgeon to connect the donor kidney at the renal pedicle access port 2. After the donor kidney connection is completed, the split unit shell 101 design allows for quick separation to remove the wrapping of the donor kidney, ensuring surgical convenience.

[0052] Since different donor kidneys have different shapes and sizes, this embodiment includes a donor kidney shape adapter component inside the plastic shell 1. The donor kidney shape adapter component includes a flexible airbag adapter layer 3, specifically as follows: Figure 2 As shown, the airbag adaptation layer 3 is equipped with an inflatable component. The airbag adaptation layer 3 includes symmetrical deformable bladders 301, which are respectively adhered and fixed to the inner sidewall of the corresponding unit shell 101 (the flexible deformable bladders 301 can adapt to and fit different sizes and shapes of donor kidneys after being inflated by the inflatable component). Each deformable bladder 301 is provided with an inflation port 4 and a pressure relief port 5 (both the inflation port 4 and the pressure relief port 5 penetrate the sidewall of the corresponding unit shell 101). Each pressure relief port is equipped with a sealing plug 6. Compared with the existing fixed-specification temperature-controlled donor kidney bags, which are prone to gaps due to their inability to adapt to the individual morphological differences of donor kidneys, resulting in uneven temperature control and blind spots in moisturization, the deformable bladder 301 adapts to and fits the donor kidney, which can reduce the gaps between the donor kidney and the temperature control and moisturization control, and reduce the risk of damage such as dryness and temperature fluctuations to the local tissues of the donor kidney due to exposure or poor fit.

[0053] For the inflation of deformable airbags, specific combinations Figure 2 and Figure 3 As shown, the inflation component proposed in this embodiment includes an air pump 7. The output end of the air pump 7 is connected to an air supply and pressure measurement pipeline. The air supply and pressure measurement pipeline includes a main supply pipe 8, a shunt connector 9, and two secondary supply pipes 10. The two secondary supply pipes 10 are respectively connected to the corresponding inflation ports 4. A one-way valve 11 is provided on the main supply pipe 8 (the one-way valve 11 prevents the backflow of gas into the deformation bladder 301). Furthermore, a special feature is that this embodiment includes a fit evaluation unit for real-time acquisition of inflation resistance parameters within the main supply pipe 8. The fit evaluation unit is signal-connected to a controller, specifically... Figure 3 and Figure 4 As shown:

[0054] The fit assessment unit includes a differential pressure sensor built into the main supply pipe 8. The differential pressure sensor includes a pre-positioned differential pressure sensor 12 and a post-positioned differential pressure sensor 13. The pre-positioned differential pressure sensor 12 is located in the main supply pipe between the one-way valve 11 and the air pump 7 (the pre-positioned differential pressure sensor 12 collects the initial supply air pressure at the output end of the air pump 7 in real time). The post-positioned differential pressure sensor 13 is located in the main supply pipe between the one-way valve 11 and the connector (the post-positioned differential pressure sensor 13 collects the proximal air pressure before entering the deformation bladder 301). The data processing procedure for assessing fit by using the pressure difference between the initial supply air pressure and the proximal air pressure is as follows:

[0055] After receiving the initial supply air pressure and proximal air pressure data, the controller calculates the inflation pressure difference during the current inflation process in real time. (When the deformable bladder 301 is not fully attached to the donor kidney, there is still expandable space inside, the gas flow resistance is small, and the pressure difference is in a low range. As inflation progresses, the deformable bladder 301 gradually adapts to the outline of the donor kidney and fills the gap, the gas flow resistance continues to increase, the post-pressure rises synchronously, and the pressure difference increases dynamically accordingly.) When there is an inflation pressure difference (i.e., the deformable bladder is attached to the donor kidney) and the inflation pressure difference is stable (the attachment of the deformable bladder 301 can also be observed in conjunction with the transparent unit shell 101 during the process), the controller automatically determines that the donor kidney and the deformable bladder 301 are attached and fit together without any gap. If there is no inflation pressure difference or abnormal fluctuations, the air pump 7 continues to inflate.

[0056] Regarding temperature control of the donor kidney, this embodiment includes a temperature control component within the air sac adapter layer 3 formed by the deformation sac 301, specifically combined with... Figure 2 and Figure 5As shown, the temperature control assembly includes a serpentine temperature control pipeline 14, which is adapted to and connected to a temperature control liquid circulation delivery unit (the liquid circulation delivery unit is used to circulate and deliver liquid into the temperature control pipeline 14 and regulate the temperature of the delivered liquid); wherein, the temperature control pipeline 14 includes symmetrically arranged circulation pipes 1401 in a serpentine shape, and several limiting collars 1402 are fixedly connected to the deformation bladder 301, and the circulation pipes 1401 all pass through the corresponding limiting collars 1402 to achieve The sliding connection between the circulation tube 1401 and the deformable sac 301; the sliding fit design between the circulation tube 1401 and the deformable sac 301 allows the circulation tube 1401 to slide freely within the limiting collar 1402 to adjust its own arrangement and extension length when the volume of the deformable sac 301 changes. This reduces the risk of the circulation tube 1401 being pulled, twisted, or squeezed and folded due to the deformation of the deformable sac 301, thus blocking the circulation path of the internal temperature control fluid. It also maintains the close fit between the circulation tube 1401 and the surface of the donor kidney.

[0057] In addition, specific combinations Figure 5 and Figure 6 As shown, the temperature-controlled liquid circulation delivery unit includes a carrier box 15, inside which a circulation pump (not shown) is fixedly connected by bolts. The input end of the circulation pump is connected to a signal distributor (not shown), which is signal-connected to the controller. The signal distributor is also connected to a room-temperature liquid box (not shown) and a cold liquid box (not shown). The liquid temperature in the room-temperature liquid box is 35-45℃, and the liquid in the cold liquid box is an ice-water mixture. The circulation pipe 1401 is connected to the output end of the circulation pump. According to the temperature control requirements of different stages in the kidney transplantation surgery, the controller sends a drive signal to the signal distributor to regulate the room temperature control or cooling protection of the donor kidney. The circulation pump pumps the 35-45℃ liquid or ice-water mixture into the circulation pipe 1401 to exchange heat with the surface of the donor kidney, thereby realizing the on-demand temperature control of the donor kidney.

[0058] The special feature of this embodiment is the lack of moisture protection for the donor kidney in existing donor kidney protective bag structures. This embodiment also includes a moisture-retaining component inside the airbag adapter layer 3 formed by the two deformable bladders 301. Specifically, in conjunction with… Figure 2 and Figure 7As shown, the moisturizing component includes a moisturizing matrix layer 16, which is adhered and fixed to the inner wall of the airbag adapter layer 3. The moisturizing matrix layer 16 is pre-impregnated with moisturizing gel. The design of the moisturizing matrix layer 16 is such that when the deformation bladder 301 is inflated and fits the donor kidney, the moisturizing matrix layer 16 will adhere to the surface of the donor kidney along with the deformation bladder 301. Any disturbance to the deformation bladder 301 from the outside can continuously release moisturizing gel through the porous slow-release structure of the moisturizing matrix layer 16, forming a warm and moisturizing protective film that fits the contour of the donor kidney. This can reduce the probability of cell dehydration or loss of activity due to dryness in the donor kidney, and together with the airbag adapter layer 3, form a flexible physical isolation barrier to reduce the risk of mechanical damage. It continuously provides stable, mild and non-irritating humidity protection for the donor kidney, preserves the physiological activity of the donor kidney, and improves the transplant success rate.

[0059] Example 2:

[0060] The difference between this embodiment and Embodiment 1 lies in the specific combination... Figure 1 , Figure 2 and Figure 8 As shown, in this embodiment, semi-circular air guide blocks 17 are provided at the reserved slots 201. Each air guide block 17 is connected to the corresponding deformation bladder 301. Each air guide block 17 is provided with several elastic pressure-bearing valves, each of which includes several elastic diaphragm valves 18. The elastic valve formed by the several diaphragm valves 18 is normally closed in the initial state. After the deformation bladder 301 is inflated and adheres to the surface of the donor kidney, when the internal air pressure of the deformation bladder 301 exceeds the elastic closing valve threshold due to pressure, the pressure-bearing valve automatically opens. Each air guide block 17 is provided with several air outlets 19. A wet film carrier ring 20 can be detachably installed on the surface of the air guide block 17. The wet film carrier ring 20 is made of plant fiber matrix pre-impregnated with isotonic moisturizing liquid. When the pressure-bearing valve opens... Upon activation, gas flows from the deformation bladder 301 to the vent 19, and then through the wet membrane support ring 20 to provide evaporative humidification to the kidney pedicle at the two renal pedicle operating ports. This evaporative humidification design addresses the vulnerability of the kidney pedicle to dryness when exposed outside the protective bag during kidney transplantation. It creates a dynamically humid environment for key structures such as the renal pedicle vessels and ureters without interfering with the surgical field of vision, while maintaining the physiological osmotic pressure balance of the renal pedicle cells through an isotonic formula, reducing the risk of inflammatory factor release and tissue adhesion. Simultaneously, the detachable wet membrane support ring 20 allows for quick replacement based on surgical duration, ensuring continuous, gentle, and appropriate humidity protection for the kidney pedicle throughout the entire kidney transplantation procedure, improving surgical success rates and postoperative recovery.

[0061] In this embodiment, a thin film valve 18 made of liquid silicone rubber is used. The 18 is a thin film with a diameter of 10 mm and a thickness of 0.2 mm. After being molded and vulcanized, it undergoes precise stress adjustment and airtightness testing. The experiment shows that the threshold of the elastic closing valve is 1.2 kPa. This ensures that the valve is reliably closed in its initial state, maintaining the stability of the inflation and fitting process of the deformable bladder 301. It can also be opened under pressure after the deformable bladder 301 fully adapts to the contour of the donor kidney and the internal air pressure reaches the safe pressure value required for fitting.

[0062] Example 3:

[0063] The difference between this embodiment and Embodiment 2 lies in the specific combination... Figure 1 and Figure 2 As shown, each deformable bladder 301 includes several interconnected unit bladders 3011. Designing the deformable bladder 301 as a multi-modular unit bladder 3011 allows for more precise adaptation to the irregular contour of the donor kidney surface during inflation, relying on the independent deformation characteristics of each unit bladder 3011. This further optimizes the fit and pressure distribution, reduces the probability of local excessive pressure damaging the donor kidney tissue, and maintains the overall protective function through the remaining normal units when a single unit bladder 3011 is damaged, thus improving the fault tolerance and reliability of the device.

[0064] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A kidney bag for kidney transplant surgery, characterized in that, It includes a transparent plastic shell (1), and inside the plastic shell (1) are arranged a kidney shape adaptation component, a temperature control component and a moisture-retaining component from the outside to the inside. A kidney pedicle operation port (2) is opened on one side of the plastic shell (1). The kidney shape adaptation component includes a flexible airbag adaptation layer (3), the outer wall of the airbag adaptation layer (3) is fixedly connected to the inner wall of the plastic shell (1), the airbag adaptation layer (3) is configured with an inflation component, and the inflation component is configured with a fitting degree evaluation unit for real-time acquisition of inflation resistance parameters. The fitting degree evaluation unit is used to evaluate the fitting degree between the airbag adaptation layer (3) and the surface of the kidney based on the inflation resistance parameters. The fitting degree evaluation unit is signal connected to a controller. The temperature control component includes a serpentine temperature control pipeline (14), which is slidably connected to the inner wall of the airbag adapter layer (3). The temperature control pipeline (14) is adapted to be connected to a temperature control liquid circulation delivery unit. The temperature control liquid circulation delivery unit is used to circulate and deliver liquid into the temperature control pipeline (14) and regulate the temperature of the delivered liquid. The temperature control liquid circulation delivery unit is connected to the controller signal. The moisturizing component includes a moisturizing matrix layer (16), which is fixedly connected to the inner wall of the airbag adapter layer (3), and the moisturizing matrix layer (16) is pre-impregnated with moisturizing gel.

2. The kidney bag for kidney transplantation surgery according to claim 1, characterized in that, The plastic shell (1) includes two symmetrical and detachably connected unit shells (101). Each unit shell (101) has a semi-circular reserved groove (201). When the two unit shells (101) are assembled and locked together, the two reserved grooves (201) surround and form the renal pedicle operation port (2).

3. The kidney bag for kidney transplantation surgery according to claim 2, characterized in that, The airbag adapter layer (3) includes symmetrical deformation bladders (301). The deformation bladders (301) are fixedly connected to the inner side wall of the corresponding unit housing (101). Each deformation bladder (301) is provided with an inflation port (4) and a depressurization port (5). Each depressurization port (5) is equipped with a sealing plug (6).

4. The kidney bag for kidney transplantation surgery according to claim 3, characterized in that, The inflation component includes an air pump (7), the output end of which is connected to an air supply and pressure testing pipeline. The air supply and pressure testing pipeline includes a main supply pipe (8), a shunt connector (9), and two secondary supply pipes (10). The two secondary supply pipes (10) are connected to the corresponding inflation interface (4) respectively. A one-way air valve (11) is provided on the main supply pipe (8). The fit assessment unit includes a differential pressure sensor built into the main delivery pipe (8). The differential pressure sensor is used to collect and analyze the inflation pressure change data in the main delivery pipe (8) during the inflation process of the air pump (7). The controller obtains the inflation pressure change data and converts it into the inflation resistance change data of the air pump (7).

5. The kidney bag for kidney transplantation surgery according to claim 4, characterized in that, The differential pressure sensing device includes a front differential pressure sensor (12) and a rear differential pressure sensor (13). The front differential pressure sensor (12) is located in the main pipeline (8) between the one-way air valve (11) and the air pump (7), and the rear differential pressure sensor (13) is located in the main pipeline (8) between the one-way air valve (11) and the connector.

6. The kidney bag for kidney transplantation surgery according to claim 3, characterized in that, The temperature control pipeline (14) includes symmetrical and snake-shaped circulation pipes (1401), and the two circulation pipes (1401) are slidably connected to the inner wall of the corresponding deformation bladder (301); The temperature-controlled liquid circulation delivery unit includes a carrier box (15), which is equipped with a circulation pump. The input end of the circulation pump is connected to a signal distributor. The signal distributor is also connected to a room temperature liquid box and a cold liquid box. The signal distributor is connected to the controller signal. The circulation pipe (1401) is connected to the output end of the circulation pump.

7. The kidney bag for kidney transplantation surgery according to claim 6, characterized in that, Several limiting collars (1402) are fixedly connected to the deformation bladder (301), and the circulation tube (1401) passes through the corresponding limiting collars (1402).

8. The kidney bag for kidney transplantation surgery according to claim 3, characterized in that, Each of the reserved slots (201) is provided with a semi-circular ventilation guide block (17). Each ventilation guide block (17) is connected to the corresponding deformation bladder (301). Each ventilation guide block (17) is provided with several elastic pressure-bearing valves. The pressure-bearing valves are normally closed in the initial state. After the deformation bladder (301) is inflated and attached to the surface of the kidney donor, when the internal air pressure of the deformation bladder (301) exceeds the threshold of the elastic closing valve, the pressure-bearing valves automatically open. Each ventilation guide block (17) is provided with several air outlets (19). The surface of the ventilation guide block (17) is detachably equipped with a wet film carrier ring (20). When the pressure-controlled valve is opened, the gas flows from the deformation bladder (301) to the air outlet (19), and then through the wet film carrier ring (20) to perform wet film evaporation atomization moisturization on the kidney pedicle at the kidney pedicle operation port (2).

9. The kidney bag for kidney transplantation surgery according to claim 8, characterized in that, All pressure-operated valve components include several elastic diaphragm valve plates (18).

10. The kidney bag for kidney transplantation surgery according to claim 9, characterized in that, Each deformable capsule (301) comprises several interconnected unit capsules (3011).

Images