Medical liquid storage tank device with sealing function and preparation method of hollow floating ball

Abstract

The invention discloses a medical liquid storage tank device with a sealing function, which comprises a plurality of groups of liquid storage unit tanks which are communicated with each other and comprise tail end liquid storage tanks; the negative pressure suction device is communicated with the liquid storage unit tank; the ventilation adjusting tank is clamped between the tail end liquid storage tank and the negative pressure suction device, and is provided with a containing cavity, and a first liquid inlet and a first flow stopping opening which are communicated with the containing cavity; the hollow floating ball is arranged in the accommodating cavity, sequentially comprises an air inner cavity, an elastic deformation layer and an anti-permeable conductive layer from inside to outside, and is used for blocking the first liquid inlet and the first flow stopping opening in a floating state; and the alarm is provided with a conductive electrode which is in contact with the anti-permeable conductive layer in the floating state. And through the hollow floating ball with good sealing performance and rebound resilience, liquid collected by the ventilation adjusting tank and the liquid storage unit tank is prevented from flowing back to the equipment, the equipment is prevented from being damaged, and the original shape is recovered after use.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a medical liquid storage tank device with a sealing function and a preparation method of a hollow floating ball. Background Art

[0002] In the field of medical surgery, the negative pressure suction device is an important medical device that generates negative pressure to remove blood, exudate, pus, etc. from the surgical area to keep the surgical field clear, reduce the risk of infection, and help the operation proceed smoothly. It can also be used for postoperative drainage, such as preventing the exudation of subcutaneous fluid.

[0003] The use of negative pressure suction device is usually connected to a liquid storage tank, and then the suction work is completed through the suction tube. However, the liquid accumulated in the liquid storage tank gradually increases, and when it is full, it is easy to be sucked back into the device by the negative pressure suction device, causing damage to the device.

[0004] Therefore, it is necessary to improve the liquid storage tank in the prior art. Summary of the invention

[0005] One of the purposes of the present invention is to overcome the defects existing in the prior art and to provide a medical liquid storage tank device with a sealing function. Through a hollow float with good sealing and resilience, the liquid collected in the ventilation regulating tank and the liquid storage unit tank is prevented from flowing back into the equipment, thereby avoiding damage to the equipment and restoring the device to its original shape after use.

[0006] In order to achieve the above-mentioned process effect, the technical solution of the present invention is: a medical liquid storage tank device with sealing function, comprising: Liquid storage unit tanks, multiple groups of which are connected and arranged, including a tail end liquid storage tank; A negative pressure suction device, connected to the liquid storage unit tank; A ventilation regulating tank is sandwiched between the tail end liquid storage tank and the negative pressure suction device, and is provided with a receiving cavity and a first liquid inlet and a first flow stopper connected to the receiving cavity; A hollow floating ball, arranged in the accommodating cavity, including an air cavity, an elastic deformation layer and a waterproof conductive layer from the inside to the outside, and used for blocking the first liquid inlet and the first stop port in a floating state; The alarm is provided with a conductive electrode in contact with the waterproof conductive layer in a floating state.

[0007] The preferred technical solution is: the elastic deformation layer includes a rubber inner layer and a foam outer layer, the material of the rubber inner layer is silicone rubber, and the material of the foam outer layer is ethylene-vinyl acetate copolymer.

[0008] The preferred technical solution is: the raw materials of the waterproof conductive layer include polyurethane acrylate, photoinitiator, carbon black conductive particles, dispersant and diluent, and the dispersant is a polyurethane polymer dispersant containing carboxylic acid groups and unsaturated bonds.

[0009] The preferred technical solution is: the ventilation regulating tank includes a tank body and a tank top arranged on the top of the tank body, the cross-section of the tank top extending from the tank bottom to the tank top gradually decreases, and the first liquid inlet and the first stop port are both arranged on the tank top.

[0010] The preferred technical solution is: it also includes a mounting base, and the mounting base is provided with a mounting groove that matches the liquid storage unit tank in a concave-convex manner.

[0011] The preferred technical solution is: the liquid storage unit tank is made of plastic material, an air bag is arranged on the inner wall of the liquid storage unit tank, and the inflation cavity of the air bag is connected to the inflation device.

[0012] The preferred technical solution is: the liquid storage unit tank is made of plastic material, one of the outer wall of the liquid storage unit tank and the side wall of the installation groove is provided with a magnetic part, and the other is a magnetic attraction part.

[0013] The second purpose of the present invention is to overcome the defects existing in the prior art and provide a method for preparing a hollow float for a liquid storage tank device, comprising the following steps: S1: preparation of a hollow rubber inner layer, a rubber sheet is placed in a mold, and a rubber hemispherical shell is obtained after the first vulcanization and cooling. The open end surface of the rubber hemispherical shell is a rough surface. The rough surfaces of the two rubber hemispherical shells are bonded relative to each other, and after bonding, they are pressurized and vulcanized for the second time to obtain a spherical hollow rubber inner layer; S2: preparation of a foam outer layer, after mixing the foaming raw materials, they are placed in a hemispherical shell machine mold, sealed, and then foamed under pressure and heating to obtain a foam hemispherical shell; S3: stacking, respectively covering the outer peripheral side of the spherical hollow rubber inner layer with two foam hemispherical shells, and the open end surfaces of the two foam hemispherical shells are connected by a polyurethane adhesive; S4: preparation of a waterproof conductive layer, coating it on the outer peripheral side of the foam outer layer after stacking, and photocuring to obtain a hollow float.

[0014] The advantages and beneficial effects of the present invention are: The medical liquid storage tank device with sealing function has a reasonable structure. The hollow floating ball arranged in the ventilation regulating tank blocks the first liquid inlet and the first flow stop port after elastic deformation in the floating state, thereby preventing the liquid collected by the ventilation regulating tank and the liquid storage unit tank from flowing back into the device, thereby avoiding damage to the device. The layer structure of the hollow float is light and has large buoyancy, and the extrusion deformation amplitude is large, thereby increasing the contact area with the first liquid inlet and the first stop port, and the blockage has good sealing performance, good waterproof performance, good resilience and can be restored instantly; The setting of the alarm can timely remove the liquid collected in the liquid storage unit tank, and can also determine the sealing effect of the hollow float blocking the first liquid inlet and the first stop port. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a medical liquid storage tank device with a sealing function; Figure 2 It is a schematic structural diagram of a medical liquid storage tank device with sealing function from another angle; Figure 3 It is a three-dimensional diagram of a floating ball in a medical liquid storage tank device with a sealing function; Figure 4 It is a structural schematic diagram of the floating ball state one in the ventilation regulating tank; Figure 5 It is a structural schematic diagram of the second state of the float ball in the ventilation regulating tank; Figure 6 It is a schematic diagram of the structure of the liquid storage unit tank and the mounting base; Figure 7 is a schematic diagram of the structure of a liquid storage unit tank; Figure 8 is another structural schematic diagram of a liquid storage unit tank; Fig. 9 It is a schematic diagram of the conductive route formed by the alarm and the waterproof conductive layer of the hollow float.

[0016] In the figure: 1. liquid storage unit tank; 2. ventilation regulating tank; 3. negative pressure suction device; 4. hollow float; 5. mounting base; 6. alarm; 10. tail end liquid storage tank; 11. sealing cover; 50. mounting groove; 20. accommodating cavity; 21. first stop port; 22. first liquid inlet; 40. air cavity; 41. rubber inner layer; 42. foam outer layer; 43. waterproof conductive layer; 60. conductive electrode; 61. first conductive wire; 62. second conductive wire; 100. air bag; 101. magnetic part; 102. magnetic suction part; 201. tank body; 202. top; 412. elastic deformation layer. DETAILED DESCRIPTION

[0017] The specific implementation of the present invention is further described below in conjunction with the examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0018] like Figures 1 to 9As shown, the medical liquid storage tank device with sealing function of the present invention comprises a liquid storage unit tank 1, a negative pressure suction device 3, a ventilation regulating tank 2, a hollow float 4 and an alarm 6. The liquid storage unit tanks 1 are arranged in at least two groups, and the adjacent liquid storage unit tanks 1 are connected in series through a suction tube (not marked). The liquid storage unit tank 1 close to the negative pressure suction device 3 is the tail end liquid storage tank 10; the negative pressure suction device 3 is connected to the liquid storage unit tank 1; the ventilation regulating tank 2 is sandwiched between the tail end liquid storage tank 10 and the negative pressure suction device 3, and the ventilation regulating tank 2 is provided with a accommodating cavity 20 and a first liquid inlet 22 and a first stop port 21 connected to the accommodating cavity 20. The first liquid inlet 22 is connected to the second liquid outlet (not marked) of the tail end liquid storage tank 10 through the suction tube. Figure 2 The middle arrow indicates the flow direction of the liquid. The first stop port 21 is connected to the negative pressure suction device 3 through a suction tube. The hollow float 4 is arranged in the accommodating chamber 20, and is used to block the first liquid inlet 22 and the first stop port 21 in the floating state. The hollow float 4 includes an air cavity 40, an elastic deformation layer 412 and a waterproof conductive layer 43 from the inside to the outside. The provision of the air cavity 40 not only reduces the mass of the float but also gives the hollow float 4 buoyancy. When the elastic deformation layer 412 is squeezed and deformed, the air cavity 40 provides a buffer, and an arbitrary contour can be obtained. The waterproof and durability of the elastic deformation layer are improved by the waterproof conductive layer 43. Fig. 9 As shown, the alarm 6 includes a first conductive wire 61 and a second conductive wire 62 extending into the accommodating cavity 20, and the extending ends of the first conductive wire 61 and the second conductive wire 62 are both provided with a conductive electrode 60 in contact with the floating waterproof conductive layer 43. The conductive electrode includes but is not limited to metal, alloy and carbon. Further, the conductive electrode is annular; further, the conductive electrode is provided at the first liquid inlet 22 and the first stop port 21 facing the port in the accommodating cavity 20.

[0019] The elastic deformation layer 412 includes a rubber inner layer 41 and a foam outer layer 42. The material of the rubber inner layer 41 is silicone rubber, and the material of the foam outer layer 42 is ethylene-vinyl acetate copolymer. The air cavity enclosed by the rubber inner layer and the foam outer layer adjust the buoyancy of the hollow float, and the outward rebound force of the rubber material itself helps the foam outer layer to recover to its original shape, so that the deformed hollow float rebounds to its original shape, and the hollow float can be reused. Among them, the rubber material has good flexibility and can be deformed when subjected to external force, and then return to its original shape after the force is removed; rubber has a high elastic modulus, which means that it can withstand great stress without breaking and can quickly rebound to its original shape; rubber has the characteristics of wear resistance and chemical corrosion resistance; rubber material can provide a good sealing effect to prevent gas leakage. Furthermore, the material of the rubber inner layer 41 is silicone rubber, which has excellent temperature resistance and can remain stable in a wide temperature range, and can generally be used between -60°C and 200°C; it has strong resistance to ultraviolet rays, ozone and weather changes, that is, it has excellent weather resistance and aging resistance, and is not easily degraded by environmental factors. Ethylene-vinyl acetate copolymer (EVA) foam has low density and light weight, which is conducive to adjusting the buoyancy of the hollow float; EVA foam has good shock absorption performance, can effectively absorb impact force, and ensure stability during use; EVA foam is flexible and will not break easily even if it is deformed and bent at will; EVA foam has a certain resistance to certain chemicals, such as certain oils, alkaline substances, etc.; EVA foam usually has good waterproof performance, is not easy to absorb water, and is suitable for use in liquid environments outside the body; EVA foam can still maintain good flexibility and elasticity under low temperature conditions and is not easy to become brittle.

[0020] The raw materials of the waterproof conductive layer 43 include polyurethane acrylate, photoinitiator, carbon black conductive particles, dispersant and diluent, and the dispersant is a polyurethane polymer dispersant containing carboxylic acid groups and unsaturated bonds. The polyurethane acrylate coating has good wear resistance, can resist wear, and extend the service life of the coating; the coating has good flexibility, so that it can withstand a certain degree of deformation without cracking; the coating has good adhesion to the substrate and can be tightly attached to various substrates; the coating has good resistance to a variety of chemicals and is not easily corroded; the coating cures quickly, shortens the construction period and adheres to the outer surface of the outer layer of the foam. The carboxylic acid groups in the polyurethane polymer dispersant are adsorbed on the surface of the carbon black conductive particles through electrostatic action to form a stable dispersion system. The unsaturated bonds are cross-linked with polyurethane acrylate to effectively prevent the uneven distribution and precipitation of carbon black conductive particles, which leads to unstable performance, and effectively prevent the carbon black conductive particles from falling off and losing their conductive function or being insensitive to conductivity, which affects the alarm timeliness of the alarm. Both the dispersant and the resin contain polyurethane, which further improves the toughness of the waterproof conductive layer 43.

[0021] The ventilation regulating tank 2 includes a tank body 201 and a tank top 202 arranged above the tank body 201. The cross section of the tank top 202 gradually decreases in the direction extending from the tank bottom to the tank top 202. The first liquid inlet 22 and the first stopper 21 are both arranged on the tank top 202. That is, the tank top 202 is conical. As the amount of liquid extracted increases, the hollow float is in a floating state. When the liquid level rises too high, the hollow float abuts against the tank top 202 and deforms. The inverted triangular tank top 202 increases the contact area with the hollow float 4, and at the same time generates an extrusion force in the direction of inward convergence and a rebound pressure opposite to the floating direction, so as to achieve the sealing of the first liquid inlet 22 and the first stopper 21, thereby preventing the extracted liquid from flowing back into the negative pressure suction device 3 and causing damage to the equipment. Furthermore, the tank body 201 and the tank top 202 are detachably connected to facilitate the installation and replacement of the hollow float 4.

[0022] The beneficial effects of the above structure are as follows: First, the rise of the liquid in the ventilation regulating tank 2 is used to provide buoyancy for the hollow float 4, so that the first stopper 21 is sealed and the flow of the liquid is cut off. The rise of the hollow float and the matching sealing structure of the conical inner wall are cleverly used to achieve disconnection, and no manual observation is required. Second, while the sealing is achieved, the alarm can be turned on, so that the liquid filled in the liquid storage unit tank and the ventilation regulating tank can be handled in time.

[0023] In order to stabilize the position of the liquid storage unit tank, a mounting base 5 is also included, and the mounting base 5 is provided with a mounting groove 50 that matches the concave and convex of the liquid storage unit tank 1. Further, the mounting base 5 is a metal frame, and the mounting groove 50 is a transparent hard plastic. The transparent mounting groove 50 is convenient for observing the liquid accumulated in the liquid storage unit tank 1, and the transparent mounting groove 50 is provided with a scale.

[0024] When the negative pressure suction device 3 is used to extract liquid from the surgical area, when the suction head of the suction tube is blocked, it is easy to cause the liquid storage unit tank 1 to be dented and deformed, and it is difficult to recover, so that the collection volume of the liquid storage unit tank 1 is reduced. In order to restore the appearance of the liquid storage unit tank 1 to maintain the original volume of the stored liquid, in some embodiments, the liquid storage unit tank 1 is made of plastic, and the inner wall of the liquid storage unit tank 1 is provided with an air bag 100, and the inflation cavity of the air bag 100 is connected to the inflation device (not shown). The method of use is: when the liquid is extracted normally, the air bag is in a deflated state. When the liquid storage unit tank 1 is dented and deformed, the inflation device is started, and the inflation cavity is inflated to open the tank wall of the liquid storage unit tank 1, and the gas in the inflation cavity is released after the original shape is restored to maintain the original capacity.

[0025] The existing liquid storage unit tank 1 is a soft plastic tank, which is convenient for storage and later collection without taking up space, but is easily deformed by negative pressure during use, resulting in a smaller storage space. The airbag 100 can ensure the storage volume and take into account the storage space before and after.

[0026] In other embodiments, the liquid storage unit tank 1 is made of plastic, and one of the outer wall of the liquid storage unit tank 1 and the side wall of the mounting groove 50 is provided with a magnetic member 101, and the other is a magnetic attraction member 102. The magnetic attraction not only stabilizes the liquid storage unit tank 1 in the mounting groove 50, but also effectively maintains the original shape of the liquid storage unit tank 1 to prevent concave deformation.

[0027] Furthermore, the inner diameter of the mounting groove 50 is larger than the outer diameter of the liquid storage unit tank 1. The liquid storage unit tank 1 includes a sealing cover 11, and the edge of the sealing cover 11 is covered in the notch of the mounting groove 50. The mounting groove 50 not only plays a role in stabilizing the position of the liquid storage unit tank 1, but also facilitates the collection of a small amount of liquid that overflows due to deformation.

[0028] The preparation method of the hollow float 4 includes the following steps: S1: preparation of the hollow rubber inner layer, the rubber sheet is placed in the mold, and a rubber hemispherical shell is obtained after the first vulcanization and cooling. The open end face of the rubber hemispherical shell is a rough surface. The rough surfaces of the two rubber hemispherical shells are bonded relative to each other, and after bonding, they are pressurized and vulcanized for the second time to obtain a spherical hollow rubber inner layer; S2: preparation of the foam outer layer, after the foaming raw materials are mixed, they are placed in a hemispherical shell machine mold, and after sealing, they are foamed under pressure and heating to obtain a foam hemispherical shell; S3: stacking, two foam hemispherical shells are respectively coated on the outer peripheral side of the spherical hollow rubber inner layer, and the open end faces of the two foam hemispherical shells are connected by a polyurethane adhesive; S4: preparation of a waterproof conductive layer, which is coated on the outer peripheral side of the foam outer layer after stacking, and photocuring is performed to obtain a hollow float.

[0029] The UV radiation intensity is 110~120mW / cm 2 ; UV energy density is 110~120mJ / cm 2 , the surface temperature of the UV lamp is below 60℃. The waterproof conductive layer is made by light curing to overcome the limitation of EVA foam, which has poor high temperature resistance. The high temperature curing of the waterproof conductive layer can easily lead to aging of the outer layer of the foam, which has a negative impact on its mechanical properties and elasticity.

[0030] Example 1

[0031] like Figures 1 to 6As shown, the medical liquid storage tank device with sealing function includes a liquid storage unit tank 1, a negative pressure suction device 3, a ventilation regulating tank 2, a hollow float 4, an alarm 6 and a mounting base 5. The liquid storage unit tanks 1 are arranged in at least two groups, and adjacent liquid storage unit tanks 1 are connected in series through a suction tube (not marked). The liquid storage unit tank 1 close to the negative pressure suction device 3 is the tail end liquid storage tank 10; the negative pressure suction device 3 is connected to the liquid storage unit tank 1; the ventilation regulating tank 2 is sandwiched between the tail end liquid storage tank 10 and the negative pressure suction device 3, and the ventilation regulating tank 2 is provided with a accommodating cavity 20 and a first liquid inlet 22 and a first stop flow port 21 connected to the accommodating cavity 20. The first liquid inlet 22 is connected to the second liquid outlet (not marked) of the tail end liquid storage tank 10 through the suction tube, and the first stop flow port 21 is connected to the negative pressure suction device 3 through the suction tube. The hollow float 4 is arranged in the accommodating cavity 20, and is used to block the first liquid inlet 22 and the first stopper 21 in the floating state. The hollow float 4 includes an air cavity 40, an elastic deformation layer 412 and a water-proof conductive layer 43 from the inside to the outside. The alarm 6 includes a first conductive wire 61 and a second conductive wire 62 extending into the accommodating cavity 20. The extending ends of the first conductive wire and the second conductive wire are both provided with conductive electrodes 60 in contact with the water-proof conductive layer 43 in the floating state. The mounting base 5 is provided with a mounting groove 50 that matches the liquid storage unit tank 1 in a concave-convex manner.

[0032] The elastic deformation layer 412 includes a rubber inner layer 41 and a foam outer layer 42 . The material of the rubber inner layer 41 is silicone rubber, and the material of the foam outer layer 42 is ethylene-vinyl acetate copolymer.

[0033] The ventilation regulating tank 2 includes a tank body 201 and a tank top 202 disposed above the tank body 201. The cross section of the tank top 202 gradually decreases in the extending direction from the tank bottom to the tank top 202. The first liquid inlet 22 and the first stop port 21 are both disposed on the tank top 202. That is, the tank top 202 is in an inverted triangle shape. The tank body 201 and the tank top 202 are detachably connected to facilitate the installation and replacement of the hollow float 4.

[0034] The inner diameter of the mounting groove 50 is greater than the outer diameter of the liquid storage unit tank 1 . The liquid storage unit tank 1 comprises a sealing cover 11 . The edge of the sealing cover 11 is covered on the notch of the mounting groove 50 .

[0035] The liquid storage unit tank 1 is made of plastic material. An air bag 100 is arranged on the inner wall of the liquid storage unit tank 1 . The inflation cavity of the air bag 100 is connected to an inflation device (not shown).

[0036] The preparation method of the hollow float includes the following steps: S1: preparation of the hollow rubber inner layer, the rubber sheet is placed in the mold, and a rubber hemispherical shell is obtained after the first vulcanization and cooling. The open end face of the rubber hemispherical shell is a rough surface. The rough surfaces of the two rubber hemispherical shells are bonded relative to each other, and then pressurized and vulcanized for the second time after bonding to obtain a spherical hollow rubber inner layer; S2: preparation of the foam outer layer, after the foaming raw materials are mixed, they are placed in the hemispherical shell machine mold, sealed, and foamed under pressure and heating to obtain a foam hemispherical shell; S3: stacking, respectively wrapping the two foam hemispherical shells on the outer peripheral side of the spherical hollow rubber inner layer, and the open end faces of the two foam hemispherical shells are connected by a polyurethane adhesive; S4: preparation of a waterproof conductive layer, coating it on the outer peripheral side of the foam outer layer after stacking, and photocuring to obtain a hollow float. Among them, the ultraviolet irradiation intensity is 116mW / cm 2 ; UV energy density is 116mJ / cm 2 , the surface temperature of the ultraviolet light tube is 58℃.

[0037] Example 2

[0038] like Figure 7 As shown, Example 2 is based on Example 1, with the difference that the liquid storage unit tank 1 is made of plastic, and one of the outer wall of the liquid storage unit tank 1 and the side wall of the mounting groove 50 is provided with a magnetic member 101 , and the other is a magnetic attraction member 102 .

[0039] Example 3

[0040] Embodiment 3 is based on Embodiment 1, but differs in that the elastic deformation layer 412 only includes the foam outer layer 42 .

[0041] Compared with Example 1 and Example 2, the hollow floating ball in Example 3 recovers its original shape slowly and the partial restoration is incomplete.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A medical liquid storage tank device with sealing function, characterized in that: include: Liquid storage unit tanks (1), multiple groups of which are connected and arranged, including a tail end liquid storage tank (10); A negative pressure suction device (3) connected to the liquid storage unit tank (1); The ventilation regulating tank (2) is sandwiched between the tail end liquid storage tank (10) and the negative pressure suction device (3), and is provided with a receiving chamber (20) and a first liquid inlet (22) and a first flow stop (21) communicated with the receiving chamber (20); A hollow floating ball (4) is disposed in the accommodating cavity (20), and comprises, from the inside to the outside, an air cavity (40), an elastic deformation layer (412), and a waterproof conductive layer (43), and is used to block the first liquid inlet (22) and the first flow stop (21) in a floating state; The alarm (6) is provided with a conductive electrode (60) in contact with the impermeable conductive layer (43) in a floating state.

2. The medical liquid storage tank device with sealing function according to claim 1, characterized in that: The elastic deformation layer (412) comprises a rubber inner layer (41) and a foam outer layer (42); the material of the rubber inner layer (41) is silicone rubber, and the material of the foam outer layer (42) is ethylene-vinyl acetate copolymer.

3. The medical liquid storage tank device with sealing function according to claim 2, characterized in that: The raw materials of the water-impermeable conductive layer (43) include polyurethane acrylate, photoinitiator, carbon black conductive particles, dispersant and diluent, and the dispersant is a polyurethane polymer dispersant containing carboxylic acid groups and unsaturated bonds.

4. The medical liquid storage tank device with sealing function according to claim 1, characterized in that: The ventilation regulating tank (2) comprises a tank body (201) and a tank top (202) arranged on the top of the tank body (201); the cross section of the tank top (202) extending from the tank bottom to the tank top (202) gradually decreases; and the first liquid inlet (22) and the first flow stop (21) are both arranged on the tank top (202).

5. The medical liquid storage tank device with sealing function according to claim 1, characterized in that: It also comprises a mounting base (5), wherein the mounting base (5) is provided with a mounting groove (50) that matches the liquid storage unit tank (1) in a concave-convex manner.

6. The medical liquid storage tank device with sealing function according to claim 5, characterized in that: The liquid storage unit tank (1) is made of plastic material, an air bag (100) is provided on the inner wall of the liquid storage unit tank (1), and an inflation cavity of the air bag (100) is connected to an inflation device.

7. The medical liquid storage tank device with sealing function according to claim 5, characterized in that: The liquid storage unit tank (1) is made of plastic material; one of the outer wall of the liquid storage unit tank (1) and the side wall of the installation groove (50) is provided with a magnetic component (101), and the other is a magnetic attraction component (102).

8. A method for preparing a hollow floating ball for a liquid storage tank device, characterized in that: The following steps are involved: S1: Preparation of hollow rubber inner layer, the rubber sheet is placed in the mold, and a rubber hemispherical shell is obtained after the first vulcanization and cooling. The open end face of the rubber hemispherical shell is a rough surface. The rough surfaces of the two rubber hemispherical shells are bonded relative to each other, and then pressurized and vulcanized for the second time after bonding to obtain a spherical hollow rubber inner layer; S2: Preparation of foam outer layer, after the foaming raw materials are mixed, they are placed in a hemispherical shell machine mold, and after sealing, they are foamed under pressure and heating to obtain a foam hemispherical shell; S3: Stacking, two foam hemispherical shells are respectively coated on the outer peripheral side of the spherical hollow rubber inner layer, and the open end faces of the two foam hemispherical shells are connected by a polyurethane adhesive; S4: Preparation of waterproof conductive layer, coating it on the outer peripheral side of the foam outer layer after stacking, and photocuring to obtain a hollow float.

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