Automatic equipment and method for post-treatment after preparation of surgical drape

Abstract

The invention discloses automatic equipment and method for post-treatment after preparation of surgical drapes, and relates to the field of fabric drying treatment.The method comprises the following steps that S1, the surgical drapes to be dried are frozen; s2, medium and low temperature hot air circulation is adopted, surface water is removed, and inner layer ice crystals are melted; s3, separating from low-temperature hot air circulation for a period of time; and S4, far infrared radiation is adopted, and the absorption characteristic of silver ions to a specific wave band is utilized, so that drying post-treatment of the surgical drape is achieved. By means of multi-step collaborative drying combining freezing treatment, hot air circulation, standing and infrared radiation, the moisture diffusion efficiency is greatly improved, deep moisture residues are reduced, degradation of the antibacterial performance of nano-silver particles in the antibacterial layer due to high-temperature oxidation or agglomeration is effectively avoided, meanwhile, fiber deformation is restrained, and the antibacterial effect is improved. The dimensional stability and antibacterial durability of the sheet are ensured, so that the sheet has relatively good dual optimization of drying efficiency and material performance protection.

Description

Technical Field

[0001] The invention relates to the technical field of fabric drying treatment, and in particular to an automated post-treatment device and method for preparing surgical drapes. Background Art

[0002] In surgical operations, keeping the surgical area clean and sterile is one of the key factors to ensure the success of the operation and the recovery of the patient. To achieve this goal, surgical drapes are widely used during surgery to cover the surgical area to prevent the invasion of external microorganisms and absorb blood, body fluids and other liquids generated during the operation to keep the surgical site dry.

[0003] With the advancement of technology, traditional surgical drapes have been gradually replaced by drapes with special functions. Among them, surgical drapes with silver ion antibacterial layer are highly favored due to their excellent antibacterial properties. Surgical drapes with silver ion antibacterial layer embed nano-scale silver particles into the fiber and utilize the broad-spectrum antibacterial properties of silver ions to effectively kill or inhibit the growth of bacteria in the surgical area, thereby reducing the risk of surgical site infection.

[0004] After the substrate layer (non-woven fabric / composite membrane) is compounded with the silver ion antibacterial layer, the surgical drape needs to be washed before being compounded with the wash solution layer to remove impurities and pollutants. The washed drape needs to be dried to restore its performance. However, for the drape containing the silver ion antibacterial layer, high-temperature drying will cause the nanosilver particles to accelerate oxidation or agglomeration, thereby reducing the density of their active sites and causing the antibacterial performance to decline.

[0005] Therefore, it is necessary to improve the deficiencies in the prior art to solve the above problems. Summary of the invention

[0006] The present invention overcomes the deficiencies of the prior art and provides an automated post-processing device and method for preparing surgical drapes.

[0007] To achieve the above object, the technical solution adopted by the present invention is: a preparation and post-processing method for surgical drapes, comprising the following steps: S1. Freeze the surgical drape to be dried to convert the water from liquid into solid ice crystals; S2, using medium-low temperature hot air circulation to remove surface water and melt the inner ice crystals from the frozen surgical drape; S3, disengage the low-temperature hot air circulation for a period of time to allow the water inside the surgical drape to diffuse to the surface; S4. Use far-infrared radiation and the absorption characteristics of silver ions on specific bands to achieve post-drying processing of surgical drapes.

[0008] In a preferred embodiment of the present invention, in step S1, the surgical drape is made of a non-woven fabric / composite film material containing a silver ion antibacterial layer.

[0009] In a preferred embodiment of the present invention, in step S1, the freezing treatment temperature is -30 to -50°C and the time is 1 to 5 min.

[0010] In a preferred embodiment of the present invention, in step S2, the temperature of the hot air circulation is 40-45°C, the wind speed is 2-4 m / s, and the time is 3-5 min.

[0011] In a preferred embodiment of the present invention, in the step S3, the time for leaving the low-temperature hot air circulation is 30 to 50 seconds.

[0012] In a preferred embodiment of the present invention, in step S4, the wavelength of the infrared radiation is 3-5 μm, the power is 0.5-1.2 W / cm², and the time is 40-80 s. The present invention provides a post-processing automation device for a post-processing method of preparing a surgical drape, comprising: a material placement table, a freezing mechanism, a material conveying mechanism and a transfer mechanical arm; The material placement table is used to place surgical drapes to be dried; The freezing mechanism is used to freeze the surgical drape to be dried; The material conveying mechanism is used to convey surgical drapes, wherein a hot air drying component for performing medium-low temperature hot air circulation drying on the surgical drapes and a radiation drying component for performing far-infrared radiation drying on the surgical drapes are sequentially installed on the top of the material conveying mechanism; The transfer robot arm is used to transfer the surgical drape between the material placement table, the freezing mechanism and the material conveying mechanism.

[0013] In a preferred embodiment of the present invention, the material conveying mechanism includes: an equipment frame, a conveyor belt installed on the equipment frame, and a power source installed on the equipment frame for driving the conveyor belt to achieve circumferential rotation; a plurality of rubber strips are fixed to the side of the conveyor belt for reducing the contact area of ​​the surgical drape on the surface of the conveyor belt.

[0014] In a preferred embodiment of the present invention, the hot air drying component includes: a hot air drying frame fixed to the top of the equipment rack, a hot air blower installed on the top of the hot air drying frame, and a diverter pipe fixed to the top of the inner side of the hot air drying frame; the side of the diverter pipe is fixed to the output end of the hot air blower, and a plurality of air outlets are fixed to the side facing the top of the conveyor belt; and a plurality of ventilation fans for air circulation are provided on the side of the hot air drying frame.

[0015] In a preferred embodiment of the present invention, the radiation drying component includes: a radiation drying frame fixed on the top of the equipment rack, a plurality of ceramic infrared heaters fixed on the inner top of the radiation drying frame for heating by infrared rays, and a controller installed on the top of the radiation drying frame for controlling the plurality of ceramic infrared heaters to achieve heating.

[0016] The present invention solves the defects existing in the background technology and has the following beneficial effects: The present invention provides a preparation and post-processing method for surgical drapes. By combining freezing treatment, hot air circulation, standing and infrared radiation multi-step coordinated drying, not only the water diffusion efficiency is greatly improved and deep water residue is reduced, but also the antibacterial performance degradation of nanosilver particles in the silver ion antibacterial layer due to high-temperature oxidation or agglomeration is effectively avoided, and fiber deformation is inhibited, ensuring the dimensional stability and antibacterial durability of the drape, thereby realizing low-temperature, efficient and gentle drying treatment, and having the dual optimization of better drying efficiency and material performance protection.

[0017] In the post-processing method of the present invention, through staged dehydration optimization and precise energy delivery, while ensuring the drying efficiency, the mid-infrared radiation time can be compressed to the minimum necessary range, which can avoid the risk of performance degradation of the silver ion antibacterial layer, thereby maintaining the high antibacterial performance of the surgical drape before treatment.

[0018] In the post-treatment method of the present invention, a freezing treatment is first performed to utilize the expansion of ice crystals to squeeze the amorphous region of the fiber to form a porous structure, so that the fiber becomes fluffy, the subsequent water diffusion efficiency is improved, and deep water residue is reduced. After the medium and low temperature hot air circulation, the fiber is allowed to stand to allow the internal water to migrate to the surface, forming a water gradient diffusion, which can avoid a sudden increase in the concentration of nanosilver particles in a certain local area, avoid the formation of larger particles, and reduce the possibility of physical agglomeration.

[0019] The present invention provides an automated post-processing equipment for the preparation of surgical drapes. By integrating a material placement table, a freezing mechanism, a material conveying mechanism and a transfer robot arm, a complete automated processing equipment is formed. The equipment can realize multi-step automated operations of loading, freezing treatment, transfer, hot air circulation, standing and infrared radiation for surgical drapes to be dried. The entire process is coordinated by the various mechanism components, and only manual loading is required to realize fully automated processing of surgical drapes from pretreatment to drying, thereby improving processing efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 is a flow chart of a post-processing method according to a preferred embodiment of the present invention; Figure 2 It is an overall structural diagram of the post-processing automation equipment of the preferred embodiment of the present invention; Figure 3 is a side structural diagram of a post-processing automation device according to a preferred embodiment of the present invention; Figure 4 It is a half-section structural diagram of a hot air drying frame and a radiation drying frame of a preferred embodiment of the present invention; In the figure: 1. Material placement table; 2. Refrigeration mechanism; 3. Material conveying mechanism; 31. Equipment frame; 32. Conveyor belt; 33. Rubber strip; 4. Transfer robot arm; 5. Hot air drying component; 51. Hot air drying frame; 52. Hot air blower; 53. Diverter pipe; 54. Air outlet; 55. Ventilation fan; 6. Radiation drying component; 61. Radiation drying frame; 62. Ceramic infrared heater; 63. Controller. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0025] It should be noted that the automated equipment and method for post-processing preparation of surgical drapes of the present invention are preferably suitable for post-drying surgical drapes after composite washing of the substrate layer (non-woven fabric / composite film) and the silver ion antibacterial layer.

[0026] like Figure 1 As shown, a method for preparing and post-processing a surgical drape comprises the following steps: S1. Freeze the surgical drape to be dried to convert the water from liquid into solid ice crystals; S2, using medium-low temperature hot air circulation to remove surface water and melt the inner ice crystals from the frozen surgical drape; S3, disengage the low-temperature hot air circulation for a period of time to allow the water inside the surgical drape to diffuse to the surface; S4. Use far-infrared radiation and the absorption characteristics of silver ions on specific bands to achieve post-drying processing of surgical drapes.

[0027] In some specific embodiments, in step S1, the surgical drape is made of a non-woven fabric / composite membrane material containing a silver ion antibacterial layer.

[0028] In some specific embodiments, in step S1, the freezing treatment temperature is -30 to -50°C and the time is 1 to 5 min.

[0029] In some specific embodiments, in step S2, the temperature of the hot air circulation is 40-45° C., the wind speed is 2-4 m / s, and the time is 3-5 min.

[0030] In some specific implementations, in step S3, the time for leaving the low-temperature hot air circulation is 30 to 50 seconds.

[0031] In some specific embodiments, in step S4, the wavelength of the infrared radiation is 3-5 μm, the power is 0.5-1.2 W / cm², and the time is 40-80 s.

[0032] In order to further make the purpose and effect of the present invention simple and easy to understand, the present invention is further described in combination with the following specific examples and comparative examples. Among them, the surgical drape is composed of a non-woven fabric containing a silver ion antibacterial layer, and the water content of the surgical drape after washing is 30%. Example 1

[0033] S1. Freeze the surgical drape with a water content of 30% at -30°C for 3 min to convert the water from liquid to solid ice crystals. S2. Dry the frozen surgical drapes with medium-low temperature hot air circulation at 40°C and 3 m / s wind speed for 4 min to remove surface water and melt the inner ice crystals. S3, discontinue the low-temperature hot air circulation for 40 seconds to allow the water inside the surgical drape to diffuse to the surface; S4. Use far-infrared radiation, through the infrared radiation wavelength of 4 μm, take advantage of the absorption characteristics of silver ions to specific bands, radiate drying at a power of 0.8 W / cm² for 40 s, reduce the moisture content of the surgical drape to less than 2%, and achieve post-drying processing. Example 2

[0034] This embodiment is basically the same as Embodiment 1, with the difference being that: Step S4 is specifically as follows: using far-infrared radiation, through an infrared radiation wavelength of 4 μm, utilizing the absorption characteristics of silver ions to a specific band, with a power of 0.8 W / cm², radiating and drying for 60 s, so that the moisture content of the surgical drape is reduced to below 2%, thereby achieving post-drying treatment. Example 3

[0035] This embodiment is basically the same as Embodiment 1, with the difference being that: Step S4 is specifically as follows: using far-infrared radiation, through an infrared radiation wavelength of 4 μm, utilizing the absorption characteristics of silver ions to a specific band, with a power of 0.8 W / cm², radiating and drying for 80 s, so that the moisture content of the surgical drape is reduced to below 2%, thereby achieving post-drying treatment.

[0036] Comparative Example 1 The surgical drape with a moisture content of 30% was dried by hot air circulation at a temperature of 60°C and a wind speed of 3 m / s for 7 min to reduce the moisture content of the surgical drape to below 2%, thus achieving post-drying treatment.

[0037] Comparative Example 2 The surgical drape with a moisture content of 30% was dried by far-infrared radiation at a wavelength of 4 μm, using the absorption characteristics of silver ions on specific wavelengths, at a power of 0.8 W / cm² for 4 minutes, reducing the moisture content of the surgical drape to less than 2%, thus achieving post-drying treatment.

[0038] Comparative Example 3 This comparative example is basically the same as Example 1, except that: there is no S1 step; and the moisture content of the surgical drape is not reduced to below 2%.

[0039] Comparative Example 4 This comparative example is basically the same as comparative example 3, except that the radiation drying time is 100 s, so that the moisture content of the surgical drape is reduced to below 2%, and post-drying treatment is achieved.

[0040] Comparative Example 5 This comparative example is basically the same as Example 1, except that: Step S3: reducing the moisture content of the surgical drape to below 2% to achieve post-drying treatment.

[0041] Performance test: The non-woven fabric and the silver ion antibacterial layer were composited with unwashed surgical drapes as a blank group, and the antibacterial rate was tested with Examples 1-3, Comparative Examples 1-2, and Comparative Examples 4-5. Comparative Example 3 was abandoned because it did not achieve complete drying. The test results are shown in Table 1.

[0042] Antibacterial rate: Cut a sample with a diameter of 3 cm from the middle of the surgical drape to be tested, place a 3 cm circular sample surgical drape on the bacterial culture dish, culture it for 12 hours, and observe and measure its prevention and control efficacy.

[0043] Table 1: Antibacterial rate test results

[0044] It can be seen from Table 1 that: By comparing Examples 1-3 with the blank group, it can be seen that the drying process of the present invention achieves the maintenance of antibacterial performance for the surgical drape after drying by combining multi-step synergistic drying of freezing treatment, hot air circulation, standing and infrared radiation. First, ice crystal expansion is used to squeeze the amorphous area of ​​the fiber to form a porous structure, so that the fiber becomes fluffy, the subsequent moisture diffusion efficiency is improved, and deep moisture residue is reduced. Then, medium and low temperature hot air is used to remove surface moisture and melt internal ice crystals, so that the subsequent infrared radiation drying treatment time is shortened. By standing, the formed fiber porous structure is used to promote the migration of internal moisture to the surface, reducing the difficulty of deep drying. Finally, the absorption characteristics of silver ions for specific bands are used to further achieve deep drying by infrared radiation, thereby not only greatly improving the moisture diffusion efficiency and reducing deep moisture residue, but also effectively avoiding the antibacterial performance decline of nanosilver particles in the silver ion antibacterial layer due to high-temperature oxidation or agglomeration, while inhibiting fiber deformation, ensuring the dimensional stability and antibacterial durability of the drape, thereby achieving low-temperature, efficient and gentle drying treatment, with better drying efficiency and material performance protection dual optimization.

[0045] By comparing Example 1 with Comparative Example 1, it can be seen that although the traditional high-temperature hot air drying is simple to handle and has good efficiency, the silver ion antibacterial layer in the surgical drape that achieves long-term antibacterial effect is embedded in the fiber through nanoparticles. After high-temperature drying, the silver ions are accelerated to oxidize and agglomerate, reducing the density of active sites and causing the antibacterial property to decline.

[0046] By comparing Example 1 with Comparative Example 2, it can be learned that although faster deep drying effect can be achieved by utilizing the absorption characteristics of silver ions for specific wavelengths through infrared radiation, the thermal effect and photochemical effect produced by long-term infrared radiation, on the one hand, the thermal effect increases the temperature, accelerates the oxidation reaction between nanosilver particles and oxygen, generates silver oxide and other substances, and reduces the antibacterial performance; on the other hand, the photochemical effect causes the nanosilver particles to absorb photon energy and transition to a high energy level, making it easier to react with oxygen to generate free radicals, further promoting oxidation, and at the same time, a large amount of water evaporation increases the concentration of nanosilver particles, making it easier to physically agglomerate and form larger particles, reducing the effective surface area, thereby reducing the antibacterial effect of the surgical drape.

[0047] By comparing Example 1 with Comparative Examples 3 and 4, it can be learned that after the freezing treatment of the surgical drape to be dried in Comparative Example 3 is cancelled, it is difficult to achieve efficient drying of the surgical drape to reduce the moisture content to below 2% based on the corresponding process on the basis of Example 1. After the infrared radiation is increased for a certain drying treatment time in Comparative Example 4, although the drying treatment is achieved, it will also face the effects of oxidation and agglomeration of nanosilver particles caused by excessive infrared radiation, and the high antibacterial performance of the surgical drape before treatment cannot be maintained. Furthermore, through staged dehydration optimization and precise energy delivery, the mid-infrared radiation time can be compressed to the minimum necessary range while ensuring the drying efficiency, and the risk of performance degradation of the silver ion antibacterial layer can be avoided, thereby maintaining the high antibacterial performance of the surgical drape before treatment.

[0048] By comparing Example 1 with Comparative Example 5, it can be seen that by allowing the internal moisture to migrate to the surface after the medium-low temperature hot air circulation, forming a moisture gradient diffusion, it is possible to avoid a sudden increase in the concentration of nanosilver particles in a certain area, avoid the formation of larger particles, and reduce the possibility of physical agglomeration. like Figure 2 As shown, a post-processing automated equipment for a post-processing method of preparing a surgical drape comprises: a material placement table 1, a freezing mechanism 2, a material conveying mechanism 3 and a transfer robot 4; the material placement table 1 is used for placing the surgical drape to be dried; the freezing mechanism 2 is used for freezing the surgical drape to be dried; the material conveying mechanism 3 is used for conveying the surgical drape, wherein a hot air drying component 5 for performing medium and low temperature hot air circulation drying on the surgical drape and a radiation drying component 6 for performing far infrared radiation drying on the surgical drape are sequentially installed on the top of the material conveying mechanism 3; the transfer robot 4 is used for transferring the surgical drape between the material placement table 1, the freezing mechanism 2 and the material conveying mechanism 3.

[0049] It should be noted that the transfer robot arm 4 is located between the material placement table 1, the freezing mechanism 2 and the material conveying mechanism 3, and a negative pressure suction cup for adsorbing materials is provided at the transfer activity end; the freezing mechanism 2 at least includes a shell and a refrigeration system inside the shell, wherein the refrigeration system at least includes a compressor, a condenser, an expansion valve and an evaporator, and the refrigeration process for providing freezing treatment is: the refrigerant enters the compressor in gaseous form, and the gaseous refrigerant is compressed to increase its temperature and pressure, and the high-temperature and high-pressure refrigerant gas is discharged from the compressor and enters the condenser, where it releases heat and turns into liquid after cooling. The liquid refrigerant passes through the expansion valve, and the pressure drops suddenly, part of the liquid evaporates rapidly, and the temperature drops. At this time, the refrigerant becomes a mixed state of low temperature and low pressure (liquid and gas), and the low-temperature and low-pressure refrigerant flows into the evaporator, absorbs heat in the air inside the shell, and evaporates rapidly into a gaseous state. The evaporation process absorbs heat in the shell, lowers the temperature in the shell, and the whole process is repeated continuously, thereby maintaining the freezing treatment environment in the shell.

[0050] Specifically, a complete automated processing equipment is formed by integrating the material placement table 1, the freezing mechanism 2, the material conveying mechanism 3 and the transfer robot 4. The material placement table 1 is used for the initial placement of the surgical drapes to be processed, and the freezing mechanism 2 uses the refrigeration system to freeze the surgical drapes to achieve a specific pretreatment effect. The material conveying mechanism 3 is responsible for transporting the surgical drapes from one place to another. During this period, the hot air drying component 5 and the radiation drying component 6 are used to perform medium and low temperature hot air circulation drying and infrared radiation drying respectively. The transfer robot 4 is used to connect the various processing links, thereby realizing the automated transportation of the surgical drapes, and then the multi-step automated operations of loading, freezing, transportation, hot air circulation, standing and infrared radiation can be realized for the surgical drapes to be dried. The entire process is coordinated by the various mechanism components, and only manual loading is required to realize the fully automated processing of the surgical drapes from pretreatment to drying, thereby improving the processing efficiency and accuracy.

[0051] like Figure 2 and Figure 3 As shown, in some specific embodiments, the material conveying mechanism 3 includes: an equipment frame 31, a conveyor belt 32 installed on the equipment frame 31, and a power source installed on the equipment frame 31 for driving the conveyor belt 32 to realize circumferential rotation; a plurality of rubber strips 33 are fixed to the side of the conveyor belt 32 for reducing the contact area of ​​the surgical drape on the surface of the conveyor belt 32.

[0052] It should be noted that the power source at least includes a number of conveyor rollers rotatably connected to the equipment frame 31, and a driving device that drives the number of conveyor rollers, wherein the inner side of the conveyor belt 32 should be sleeved on the side surfaces of the number of conveyor rollers, and the driving device can be a power element including a stepper motor and a servo motor, which serves as a driving device for the conveyor rollers, driving the conveyor rollers to rotate and then driving the conveyor belt 32 to realize circumferential circulation, which can be achieved by technical means known to those skilled in the art, so it will not be repeated here.

[0053] Specifically, after the surgical drape is transferred to the top of the conveyor belt 32 on the equipment frame 31, the power source composed of a plurality of conveying rollers and a driving device can drive the conveyor belt 32 to rotate in a circumferential direction to realize the transportation of the surgical drape. At the same time, the rubber strip 33 fixed on the conveyor belt 32 is used to reduce the contact area between the surgical drape and the surface of the conveyor belt 32, which may help to reduce friction and keep the surgical drape flat.

[0054] like Figure 4As shown, in some specific embodiments, the hot air drying component 5 includes: a hot air drying frame 51 fixed on the top of the equipment frame 31, a hot air blower 52 installed on the top of the hot air drying frame 51, and a diverter pipe 53 fixed on the top of the inner side of the hot air drying frame 51; the side of the diverter pipe 53 is fixed to the output end of the hot air blower 52, and a plurality of air outlets 54 are fixed on the side facing the top of the conveyor belt 32; and a plurality of ventilation fans 55 for air circulation are arranged on the side of the hot air drying frame 51.

[0055] It should be noted that the hot air drying frame 51 is a rectangular structure with an open bottom, and openings are provided at the bottom on both sides facing the conveying direction of the conveyor belt 32, so as to avoid obstruction when the conveyor belt 32 conveys the surgical drape to the inside; a plurality of air outlets 54 are evenly distributed on the side of the shunt pipe 53 in a linear array, so as to provide uniform air supply and drying conditions for the surgical drape; the hot air blower 52 at least includes a blower, a heater and a control circuit, so as to realize the regulation of the working temperature and the air volume. During the drying operation, the blower in the hot air blower 52 blows the air into the heater, so that the air passes evenly from the inside and the outside of the spiral heating wire. The heat generated by the heating wire after being energized is heat exchanged with the cold air passing through, so that the wind temperature at the air outlet is increased, thereby realizing the increase of the air temperature and the blowing.

[0056] Specifically, the hot air drying component 5 uses the hot air blower 52 on the top of the hot air drying frame 51 to blow air into the heater for heating, and the control circuit is used to adjust the working temperature and air volume to generate hot air, and blow the hot air evenly onto the surgical drape through the shunt pipe 53 and the air outlet 54 to achieve medium and low temperature hot air circulation drying. The provision of the ventilation fan 55 helps to achieve air circulation and improve the drying efficiency.

[0057] like Figure 4 As shown, in some specific embodiments, the radiation drying component 6 includes: a radiation drying frame 61 fixed on the top of the equipment rack 31, a plurality of ceramic infrared heaters 62 fixed on the inner top of the radiation drying frame 61 for heating by infrared rays, and a controller 63 installed on the top of the radiation drying frame 61 for controlling the plurality of ceramic infrared heaters 62 to achieve heating.

[0058] It should be noted that the radiation drying frame 61 is a rectangular structure with an open bottom, and openings are provided at the bottom on both sides facing the conveying direction of the conveyor belt 32, so as to avoid obstruction when the conveyor belt 32 conveys the surgical drape to the inside; a number of ceramic infrared heaters 62 are evenly distributed on the inner top of the radiation drying frame 61 in a linear array, so as to provide uniform radiation drying conditions for the surgical drape, wherein the ceramic infrared heater 62 is a far-infrared radiation heating device that utilizes artificial ceramic materials to emit far-infrared radiation, and through the heating effect of long-wave infrared rays, the molecules on the surface of the heated object vibrate, which can generate heat energy and increase its temperature; the controller 63 is used to set the heating parameters to realize the control circuit of heating, which can be realized by simple programming by technicians in this field, and is common knowledge in this field. The control method and circuit connection will not be explained in detail in this application document, and no specific details will be given here.

[0059] Specifically, the radiation drying component 6 generates infrared radiation through the ceramic infrared heater 62. Through the heating effect of long-wave infrared rays, the molecules on the surface of the heated object vibrate, thereby generating thermal energy and raising its temperature, thereby achieving radiation drying of the surgical drape. The controller 63 is used to set the heating parameters and implement the heating control circuit, and precise control of the heating process is achieved through programming.

[0060] The above is based on the ideal embodiment of the present invention. Through the above description, it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0061] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for preparing and post-processing a surgical drape, characterized in that: The following steps are involved: S1. Freeze the surgical drape to be dried to convert the water from liquid into solid ice crystals; S2, using medium-low temperature hot air circulation to remove surface water and melt the inner ice crystals from the frozen surgical drape; S3, disengage the low-temperature hot air circulation for a period of time to allow the water inside the surgical drape to diffuse to the surface; S4. Use far-infrared radiation and the absorption characteristics of silver ions on specific bands to achieve post-drying processing of surgical drapes.

2. A method for preparing and post-processing a surgical drape according to claim 1, characterized in that: In step S1, the surgical drape is made of a non-woven fabric / composite film material containing a silver ion antibacterial layer.

3. A method for preparing and post-processing a surgical drape according to claim 1, characterized in that: In step S1, the freezing treatment is performed at a temperature of -30 to -50°C for 1 to 5 minutes.

4. The method for preparing and post-processing a surgical drape according to claim 1, characterized in that: In step S2, the temperature of the hot air circulation is 40-45°C, the wind speed is 2-4 m / s, and the time is 3-5 min.

5. The method for preparing and post-processing a surgical drape according to claim 1, characterized in that: In the step S3, the time for leaving the low-temperature hot air circulation is 30 to 50 seconds.

6. A method for post-processing a surgical drape according to claim 1, characterized in that: In step S4, the wavelength of the infrared radiation is 3-5 μm, the power is 0.5-1.2 W / cm², and the time is 40-80 s.

7. A post-processing automated device for a surgical drape preparation post-processing method according to any one of claims 1 to 6, characterized in that: include: Material placement table, freezing mechanism, material conveying mechanism and transfer robot arm; The material placement table is used to place surgical drapes to be dried; The freezing mechanism is used to freeze the surgical drape to be dried; The material conveying mechanism is used to convey surgical drapes, wherein a hot air drying component for performing medium-low temperature hot air circulation drying on the surgical drapes and a radiation drying component for performing far-infrared radiation drying on the surgical drapes are sequentially installed on the top of the material conveying mechanism; The transfer robot arm is used to transfer the surgical drape between the material placement table, the freezing mechanism and the material conveying mechanism.

8. The post-processing automated equipment for the post-processing method of preparing surgical drapes according to claim 7, characterized in that: The material conveying mechanism includes: an equipment frame, a conveyor belt installed on the equipment frame, and a power source installed on the equipment frame for driving the conveyor belt to realize circumferential circulation; a plurality of rubber strips are fixed to the side of the conveyor belt for reducing the contact area of ​​the surgical drape on the surface of the conveyor belt.

9. The post-processing automated equipment for the post-processing method of preparing surgical drapes according to claim 8, characterized in that: The hot air drying component includes: a hot air drying frame fixed on the top of the equipment frame, a hot air blower installed on the top of the hot air drying frame, and a shunt pipe fixed on the top of the inner side of the hot air drying frame; the side of the shunt pipe is fixed to the output end of the hot air blower, and a plurality of air outlets are fixed on the side facing the top of the conveyor belt; and a plurality of ventilation fans for air circulation are arranged on the side of the hot air drying frame.

10. The post-processing automated equipment for the post-processing method of preparing surgical drapes according to claim 8, characterized in that: The radiation drying assembly includes: a radiation drying frame fixed on the top of the equipment rack, a plurality of ceramic infrared heaters fixed on the inner top of the radiation drying frame for heating by infrared rays, and a controller installed on the top of the radiation drying frame for controlling the plurality of ceramic infrared heaters to achieve heating.

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