Method for preparing antibacterial tracheal cannula from EVA / poly ionic liquid composite

Abstract

The application discloses a method for preparing an antibacterial tracheal cannula from EVA / poly ionic liquid composite material and relates to the technical field of tracheal cannula production. The specific steps are as follows: Step 1: preparing bromide-1-dodecane-3-vinyl imidazole monomer; Step 2: preparing poly ionic liquid; Step 3: preparing poly glutamic acid ionic liquid; Step 4: preparing EVA poly ionic liquid; Step 5: injecting the prepared EVA / poly ionic liquid composite film material into a mold to cast the antibacterial tracheal cannula. The cooling mechanism and the connecting mechanism are arranged. When the cooling device is installed, the cooling box is installed into the connecting groove, and after completion, the connector is threadedly connected with the counter connector, so that the two counter connectors are connected through the counter pipe. The connector is threadedly connected with the connecting port, so that the two connecting ports are connected with the water inlet pipe and the water outlet pipe respectively. Through the split cooling device structure, the cooling device can be conveniently disassembled and cleaned.

Description

Technical Field

[0001] This invention relates to the field of endotracheal tube manufacturing technology, specifically a method for preparing antibacterial endotracheal tubes using EVA / polyionic liquid composite materials. Background Technology

[0002] Ionic liquids (ILs) are salts composed of anions and cations that are liquid at room temperature. They possess advantages such as good thermal stability, low volatility, high conductivity, and good solubility, and have wide applications in ion-conducting materials, polymer catalysts, antistatic materials, and gas adsorption and separation materials. Polyionic liquids (PILs) are polymerized from ionic liquids under certain conditions. PILs not only possess the special properties of ionic liquids but also have properties not found in conventional polymers, such as antibacterial properties, high mechanical strength, and good flexibility. Therefore, they are used in many fields, such as biomedicine, fine chemical catalysis, and electrochemistry. Endotracheal intubation is a method of inserting a specially designed endotracheal tube through the mouth or nose and through the glottis into the trachea or bronchus to provide optimal conditions for airway patency, ventilation, oxygen supply, and airway suction. It is an important measure for rescuing patients with respiratory dysfunction.

[0003] In the production of endotracheal tubes, the prepared EVA polyionic liquid needs to be injected into a mold to cast the antibacterial endotracheal tube. However, when using the mold, a cooling device is required. After prolonged use of the cooling device, the cooling pipeline needs to be disassembled and cleaned. Since the cooling pipeline is installed inside the mold, the entire mold needs to be disassembled for cleaning, which is a relatively complicated operation. In order to facilitate the disassembly and cleaning of the cooling structure of the mold, a method for preparing antibacterial endotracheal tubes using EVA / polyionic liquid composite materials is provided. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preparing antibacterial endotracheal tubes using EVA / polyionic liquid composite materials, so as to facilitate the disassembly and cleaning of the cooling structure of the mold.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing an antibacterial endotracheal tube using EVA / polyionic liquid composite material, the specific steps of which are as follows: first, prepare an EVA / polyionic liquid composite membrane material, then inject the prepared EVA / polyionic liquid composite membrane material into a mold, and cast to obtain an antibacterial endotracheal tube;

[0006] The mold includes a base, a mounting bracket is fixedly connected to the top of the base, a hydraulic cylinder is mounted on the outer wall of the mounting bracket, an upper mold is connected to the output end of the hydraulic cylinder, and a lower mold is mounted on the top of the base below the upper mold. The hydraulic cylinder is used to drive the upper mold to contact the lower mold for mold closing operation, and the lower mold is cooled by a cooling mechanism.

[0007] As a further aspect of the present invention, the preparation of EVA polyionic liquid includes the following steps:

[0008] Step 1: Preparation of 1-dodecane-3-vinylimidazolium bromide monomer:

[0009] 30L of ethanol was added to a 100L nitrogen-protected reactor, followed by 9.41kg of N-vinylimidazolium and 24.92kg of bromododecane. The reaction was carried out at 65℃~75℃ for 24h under nitrogen protection. After the reaction, the product was precipitated and washed with ethyl acetate. The precipitation and washing were repeated 2~5 times to remove unreacted bromobutane and N-vinylimidazolium. The separated precipitate was vacuum dried at 30~40℃ for 36~48h to obtain the bromo-1-dodecane-3-vinylimidazolium monomer.

[0010] Step 2: Preparation of polyionic liquid:

[0011] 40L of ethanol was added to a 100L nitrogen-protected reactor, followed by 10Kg of the 1-dodecane-3-vinylimidazolium bromide monomer prepared in step one above and 0.15kg of azobisisobutyronitrile initiator. After the mixture was completely dissolved, the reactor was evacuated and purged with nitrogen three times, and reacted at a constant temperature of 65℃~70℃ for 12~24 h. After the reaction was completed, the reactor was heated to 75-80℃ to remove the solvent. The reactor was then washed with acetone 2~5 times to remove a small amount of unreacted monomer, and dried under vacuum at 30-40℃ for 12~36 h to obtain a polyionic liquid.

[0012] Step 3: Preparation of polyglutamic acid ionic liquid:

[0013] 20L of ethanol was added to a 100L nitrogen-protected reactor, followed by 1Kg of the polyionic liquid prepared in step two above. After complete dissolution, a polyionic liquid solution was obtained. Simultaneously, 1Kg of glutamic acid was dissolved in deionized water to prepare a 0.1mol / L glutamic acid aqueous solution, and the pH of the solution was adjusted to 10-12 with NaOH. The polyionic liquid solution was then slowly added dropwise to the glutamic acid aqueous solution, and the mixture was stirred for 24h to allow for sufficient anion exchange reaction. The mixture was then extracted with ethyl acetate to remove the ethyl acetate, resulting in a yellow solid powder. The product was vacuum dried at 30-40℃ to obtain the polyglutamic acid ionic liquid.

[0014] Step 4: Preparation of EVA polyionic liquid:

[0015] EVA with a VA content of 10% was dissolved in tetrahydrofuran under heating and stirring. The polyglutamic acid ionic liquid prepared in step 3 above was added to the EVA organic solution at a mass ratio of 1:1~10 to obtain an EVA / polyionic liquid composite membrane material.

[0016] Step 5: Inject the prepared EVA polyionic liquid into the mold and cast it to obtain an antibacterial endotracheal tube.

[0017] As a further embodiment of the present invention: the cooling mechanism includes a connecting groove, which is formed on both sides of the lower mold. A cooling box is connected to the inner wall of the connecting groove. A connecting port is provided at one end of the cooling box, and a mating port is provided at the top of the cooling box. The two mating ports are connected by a mating pipe. A mating head is rotatably connected to both ends of the mating pipe. The mating head is used to connect the mating port and the mating pipe. The two connecting ports are respectively connected to an inlet pipe and an outlet pipe. A connector is rotatably connected to one end of both the inlet pipe and the outlet pipe. Both the inlet pipe and the outlet pipe are connected to the connecting port through the connector. The cooling box is fixedly connected to the connecting groove through the connecting mechanism.

[0018] As a further embodiment of the present invention: the connecting mechanism includes a fixing groove, the fixing groove being formed on the inner wall of the connecting groove; a fixing block extending to the outer wall of the cooling box is slidably connected inside the cooling box; a first spring is connected between the fixing block and the cooling box; a pressing block is slidably connected inside the cooling box on one side of the interface; a first lead screw is connected to the inner wall of the pressing block; a first bevel gear is fixedly connected to the bottom end of the first lead screw; a second bevel gear is rotatably connected inside the cooling box to the outer wall of the first bevel gear; a second lead screw is fixedly connected to one end of the second bevel gear; a pushing block is connected to the outer wall of the second lead screw; and the pushing block is slidably connected inside the cooling box.

[0019] As a further embodiment of the present invention: the connecting mechanism further includes a fixing frame, the fixing frame being fixedly connected to the outer wall of the cooling box, a locking block extending out of the fixing frame being slidably connected inside the fixing frame, a second spring being connected between the locking block and the fixing frame, a positioning block being slidably connected inside the fixing frame below the locking block, a top rod being slidably connected between the fixing frame and the interior of the cooling box, the top rod being located on one side of the positioning block and extending out of the cooling box, and a third spring being connected between the top rod and the cooling box.

[0020] As a further embodiment of the present invention: the inner wall of the connecting groove is fitted to the outer wall of the cooling box; the outer walls of the connecting port and the mating port are provided with external threads; the inner walls of the mating joint and the connector are provided with internal threads; the external threads match the internal threads; the outer walls of the mating pipe, the water inlet pipe and the water outlet pipe are provided with annular grooves; the inner walls of the mating joint and the connector are provided with annular blocks; the outer wall of the annular blocks is fitted to the inner wall of the annular grooves.

[0021] As a further embodiment of the present invention: the inner wall of the pressing block is provided with balls that match the first lead screw, and the first bevel gear meshes with the second bevel gear.

[0022] As a further embodiment of the present invention: the inner wall of the pushing block is provided with balls that match the second lead screw, and the outer wall of the fixing block is provided with a first inclined surface, which contacts one end of the pushing block.

[0023] As a further embodiment of the present invention: the outer wall of the connector is provided with a slot, the slot engages with one end of the locking block, the bottom end of the locking block is provided with a toothed groove, the top end of the positioning block engages with the toothed groove, the outer wall of the positioning block is provided with a second inclined surface, and the second inclined surface contacts the top rod.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] By setting up a cooling mechanism and a connecting mechanism, when installing the cooling device, the cooling box is installed into the connecting groove. After completion, the connector is threaded to the interface, thereby connecting the two interfaces through the connector pipe. The connector is threaded to the connection port, so that the two connection ports are connected to the inlet pipe and the outlet pipe respectively. The split cooling device structure makes it easy to disassemble and clean the cooling device.

[0026] When connecting the connector and the interface, the connector contacts the lower pressure block, pushing the lower pressure block to move and causing the fixing block to move into the fixing groove, thereby automatically fixing the cooling box and facilitating the quick installation of the cooling device. When connecting the connector and the interface, the positioning block automatically moves and contacts the locking block, fixing the locking block. The locking block engages with the connector, thereby fixing the connector and preventing it from loosening during the use of the cooling device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the lower mold of the present invention;

[0029] Figure 3 This is a schematic diagram of the installation of the cooling box of the present invention;

[0030] Figure 4 This is a schematic diagram of the fixing groove of the present invention;

[0031] Figure 5 This is a cross-sectional view of the connecting pipe of the present invention;

[0032] Figure 6 This is a cross-sectional view of the cooling box of the present invention;

[0033] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle.

[0034] In the diagram: 1. Base; 2. Mounting bracket; 3. Hydraulic cylinder; 4. Upper mold; 5. Lower mold; 6. Cooling mechanism; 601. Connecting groove; 602. Cooling box; 603. Connecting port; 604. Butt joint; 605. Butt pipe; 606. Butt connector; 607. Water inlet pipe; 608. Water outlet pipe; 609. Connector; 7. Connecting mechanism; 701. Fixing groove; 702. Fixing block; 703. First spring; 704. Lower pressing block; 705. First lead screw; 706. First bevel gear; 707. Second bevel gear; 708. Second lead screw; 709. Pushing block; 710. Fixing bracket; 711. Locking block; 712. Second spring; 713. Positioning block; 714. Push rod; 715. Third spring; 8. Annular block. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0036] Please see Figures 1-7 In this embodiment of the invention, the method for preparing antibacterial endotracheal tubes using EVA / polyionic liquid composite materials includes the following specific steps:

[0037] Step 1: Preparation of 1-dodecane-3-vinylimidazolium bromide monomer:

[0038] 30L of ethanol was added to a 100L nitrogen-protected reactor, followed by 9.41kg of N-vinylimidazolium and 24.92kg of bromododecane. The reaction was carried out at 65℃~75℃ for 24h under nitrogen protection. After the reaction, the product was precipitated and washed with ethyl acetate. The precipitation and washing were repeated 2~5 times to remove unreacted bromobutane and N-vinylimidazolium. The separated precipitate was vacuum dried at 30~40℃ for 36~48h to obtain the bromo-1-dodecane-3-vinylimidazolium monomer.

[0039] Step 2: Preparation of polyionic liquid:

[0040] 40L of ethanol was added to a 100L nitrogen-protected reactor, followed by 10Kg of the 1-dodecane-3-vinylimidazolium bromide monomer prepared in step one above and 0.15kg of azobisisobutyronitrile initiator. After the mixture was completely dissolved, the reactor was evacuated and purged with nitrogen three times, and reacted at a constant temperature of 65℃~70℃ for 12~24 h. After the reaction was completed, the reactor was heated to 75-80℃ to remove the solvent. The reactor was then washed with acetone 2~5 times to remove a small amount of unreacted monomer, and dried under vacuum at 30-40℃ for 12~36 h to obtain a polyionic liquid.

[0041] Step 3: Preparation of polyglutamic acid ionic liquid:

[0042] 20L of ethanol was added to a 100L nitrogen-protected reactor, followed by 1Kg of the polyionic liquid prepared in step two above. After complete dissolution, a polyionic liquid solution was obtained. Simultaneously, 1Kg of glutamic acid was dissolved in deionized water to prepare a 0.1mol / L glutamic acid aqueous solution, and the pH of the solution was adjusted to 10-12 with NaOH. The polyionic liquid solution was then slowly added dropwise to the glutamic acid aqueous solution, and the mixture was stirred for 24h to allow for sufficient anion exchange reaction. The mixture was then extracted with ethyl acetate to remove the ethyl acetate, resulting in a yellow solid powder. The product was vacuum dried at 30-40℃ to obtain the polyglutamic acid ionic liquid.

[0043] Step 4: Preparation of EVA polyionic liquid:

[0044] EVA with a VA content of 10% was dissolved in tetrahydrofuran under heating and stirring. The polyglutamic acid ionic liquid prepared in step 3 above was added to the EVA organic solution at a mass ratio of 1:1~10 to obtain an EVA / polyionic liquid composite membrane material.

[0045] Step 5: Inject the prepared EVA / polyionic liquid composite membrane material into the mold to cast the antibacterial endotracheal tube.

[0046] Please refer to this carefully. Figure 1 and Figure 2The mold includes a base 1, a mounting bracket 2 is fixedly connected to the top of the base 1, a hydraulic cylinder 3 is installed on the outer wall of the mounting bracket 2, an upper mold 4 is connected to the output end of the hydraulic cylinder 3, and a lower mold 5 is installed at the top of the base 1 below the upper mold 4. The hydraulic cylinder 3 is used to drive the upper mold 4 to contact the lower mold 5 to perform a mold closing operation. The lower mold 5 is cooled down by a cooling mechanism 6.

[0047] In this embodiment: the hydraulic cylinder 3 operates to drive the upper mold 4 to move, and the upper mold 4 moves downward to contact the lower mold 5 to perform a mold closing operation.

[0048] Please refer to this carefully. Figures 2-5 The cooling mechanism 6 includes a connecting groove 601, which is located on both sides of the lower mold 5. A cooling box 602 is connected to the inner wall of the connecting groove 601. A connecting port 603 is provided at one end of the cooling box 602, and a mating interface 604 is provided at the top of the cooling box 602. The two mating interfaces 604 are connected by a mating pipe 605. A mating connector 606 is rotatably connected to both ends of the mating pipe 605. The mating connector 606 is used to connect the mating interfaces 604 and the mating pipe 605. The two connecting ports 603 are respectively connected to the inlet pipe 607 and the outlet pipe 608. A connector 60 is rotatably connected to one end of both the inlet pipe 607 and the outlet pipe 608. 9. The inlet pipe 607 and the outlet pipe 608 are both connected to the connector 603 via the connector 609. The cooling box 602 is fixedly connected to the connecting groove 601 via the connecting mechanism 7. The inner wall of the connecting groove 601 fits against the outer wall of the cooling box 602. The outer walls of the connector 603 and the mating interface 604 are provided with external threads. The inner walls of the mating interface 606 and the connector 609 are provided with internal threads. The external threads match the internal threads. The outer walls of the mating pipe 605, the inlet pipe 607 and the outlet pipe 608 are provided with annular grooves. The inner walls of the mating interface 606 and the connector 609 are provided with annular blocks 8. The outer wall of the annular blocks 8 fits against the inner wall of the annular groove.

[0049] In this embodiment: when installing the cooling device, the cooling box 602 is installed into the connecting groove 601. After completion, the connector 606 is threadedly connected to the interface 604, thereby connecting the two interfaces 604 through the connector 605.

[0050] Connect the connector 609 to the connector 603 by threading, so that the two connectors 603 are connected to the water inlet pipe 607 and the water outlet pipe 608 respectively. The split-type cooling device structure makes it easy to disassemble and clean the cooling device.

[0051] Please refer to this carefully. Figure 6 and Figure 7The connecting mechanism 7 includes a fixing groove 701, which is formed on the inner wall of the connecting groove 601. A fixing block 702 extending to the outer wall of the cooling box 602 is slidably connected inside the cooling box 602. A first spring 703 connects the fixing block 702 and the cooling box 602. A lowering block 704 is slidably connected inside the cooling box 602 on one side of the interface 604. A first lead screw 705 is connected to the inner wall of the lowering block 704. A first bevel gear 706 is fixedly connected to the bottom end of the first lead screw 705. A second bevel gear 707 is rotatably connected inside the cooling box 602 to the outer wall of the first bevel gear 706. A second lead screw 708 is fixedly connected to one end of the second bevel gear 707. The outer wall of the cooling box 602 is connected to a push block 709, which is slidably connected to the interior of the cooling box 602. The connecting mechanism 7 also includes a fixing frame 710, which is fixedly connected to the outer wall of the cooling box 602. A locking block 711 extending out of the fixing frame 710 is slidably connected inside the fixing frame 710. A second spring 712 is connected between the locking block 711 and the fixing frame 710. A positioning block 713 is slidably connected inside the fixing frame 710 below the locking block 711. A top rod 714 is slidably connected between the fixing frame 710 and the interior of the cooling box 602. The top rod 714 is located on one side of the positioning block 713 and extends out of the cooling box 602. A third spring 715 is connected between the top rod 714 and the cooling box 602.

[0052] In this embodiment: when connecting the connector 606 and the interface 604, the connector 606 contacts the lower pressure block 704, pushing the lower pressure block 704 to move. The movement of the lower pressure block 704 drives the first lead screw 705 to rotate. The rotation of the first lead screw 705 drives the first bevel gear 706 to rotate. The rotation of the first bevel gear 706 drives the second bevel gear 707 to rotate. The rotation of the second bevel gear 707 drives the second lead screw 708 to rotate. The rotation of the second lead screw 708 drives the push block 709 to move. The displacement of the push block 709 pushes the fixing block 702 to move into the fixing groove 701, thereby automatically fixing the cooling box 602.

[0053] When the connector 609 is connected to the connector 603, the connector 609 contacts the push rod 714, pushing the push rod 714 to move. The displacement of the push rod 714 pushes the positioning block 713 to move. The positioning block 713 contacts the locking block 711, fixing the locking block 711. The locking block 711 engages with the connector 606, thereby fixing the connector 606 and preventing the connector 606 from loosening during the use of the cooling device.

[0054] Please refer to this carefully. Figure 7The inner wall of the pressing block 704 is provided with balls that match the first lead screw 705. The first bevel gear 706 meshes with the second bevel gear 707. The inner wall of the pushing block 709 is provided with balls that match the second lead screw 708. The outer wall of the fixing block 702 is provided with a first inclined surface, which contacts one end of the pushing block 709.

[0055] In this embodiment: when connecting the connector 606 and the interface 604, the connector 606 contacts the lower pressure block 704, pushing the lower pressure block 704 to move. The movement of the lower pressure block 704 drives the first lead screw 705 to rotate. The rotation of the first lead screw 705 drives the first bevel gear 706 to rotate. The rotation of the first bevel gear 706 drives the second bevel gear 707 to rotate. The rotation of the second bevel gear 707 drives the second lead screw 708 to rotate. The rotation of the second lead screw 708 drives the push block 709 to move. The displacement of the push block 709 pushes the fixing block 702 to move into the fixing groove 701, thereby automatically fixing the cooling box 602.

[0056] Please refer to this carefully. Figure 6 The outer wall of the connector 609 is provided with a slot, which engages with one end of the locking block 711. The bottom end of the locking block 711 is provided with a toothed groove, and the top end of the positioning block 713 engages with the toothed groove. The outer wall of the positioning block 713 is provided with a second inclined surface, which contacts the top rod 714.

[0057] In this embodiment: when the connector 609 is connected to the connector 603, the connector 609 contacts the push rod 714, pushing the push rod 714 to move. The displacement of the push rod 714 pushes the positioning block 713 to move. The displacement of the positioning block 713 contacts the locking block 711, fixing the locking block 711. The locking block 711 engages with the connector 606, thereby fixing the connector 606 and preventing the connector 606 from loosening during the use of the cooling device.

[0058] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An apparatus for preparing antibacterial endotracheal tubes using EVA / polyionic liquid composite materials, characterized in that, The mold includes a base (1), a mounting bracket (2) is fixedly connected to the top of the base (1), a hydraulic cylinder (3) is installed on the outer wall of the mounting bracket (2), an upper mold (4) is connected to the output end of the hydraulic cylinder (3), a lower mold (5) is installed below the upper mold (4) at the top of the base (1), the hydraulic cylinder (3) is used to drive the upper mold (4) to contact the lower mold (5) to perform a mold closing operation, and the lower mold (5) is cooled down by a cooling mechanism (6); The cooling mechanism (6) includes a connecting groove (601) which is located on both sides of the lower mold (5). A cooling box (602) is connected to the inner wall of the connecting groove (601). A connecting port (603) is provided at one end of the cooling box (602), and a mating interface (604) is provided at the top of the cooling box (602). The two mating interfaces (604) are connected by a connecting pipe (605). A mating connector (606) is rotatably connected to both ends of the connecting pipe (605). The mating connector (606) is used for... The coupling interface (604) and the coupling pipe (605) are connected. The two connection ports (603) are respectively connected to the water inlet pipe (607) and the water outlet pipe (608). One end of the water inlet pipe (607) and the water outlet pipe (608) are rotatably connected to the connector (609). The water inlet pipe (607) and the water outlet pipe (608) are both connected to the connection port (603) through the connector (609). The cooling box (602) is fixedly connected to the connection groove (601) through the connection mechanism (7). The connecting mechanism (7) includes a fixing groove (701) formed on the inner wall of the connecting groove (601). A fixing block (702) extending to the outer wall of the cooling box (602) is slidably connected inside the cooling box (602). A first spring (703) is connected between the fixing block (702) and the cooling box (602). A pressing block (704) is slidably connected inside the cooling box (602) on one side of the docking interface (604). The inner wall of the cooling box (602) is connected to a first lead screw (705), and the bottom end of the first lead screw (705) is fixedly connected to a first bevel gear (706). The interior of the cooling box (602) is rotatably connected to the outer wall of the first bevel gear (706), and one end of the second bevel gear (707) is fixedly connected to a second lead screw (708). The outer wall of the second lead screw (708) is connected to a push block (709), and the push block (709) is slidably connected to the interior of the cooling box (602).

2. The apparatus for preparing antibacterial endotracheal tubes using EVA / polyionic liquid composite material according to claim 1, characterized in that, The connecting mechanism (7) further includes a fixing frame (710), which is fixedly connected to the outer wall of the cooling box (602). A locking block (711) extending out of the fixing frame (710) is slidably connected inside the fixing frame (710). A second spring (712) is connected between the locking block (711) and the fixing frame (710). A positioning block (713) is slidably connected inside the fixing frame (710) below the locking block (711). A top rod (714) is slidably connected inside the fixing frame (710) and the cooling box (602). The top rod (714) is located on one side of the positioning block (713) and extends out of the cooling box (602). A third spring (715) is connected between the top rod (714) and the cooling box (602).

3. The apparatus for preparing antibacterial endotracheal tubes using EVA / polyionic liquid composite material according to claim 1, characterized in that, The inner wall of the connecting groove (601) fits against the outer wall of the cooling box (602). The outer walls of the connecting port (603) and the mating port (604) are provided with external threads. The inner walls of the mating head (606) and the connector (609) are provided with internal threads. The external threads match the internal threads. The outer walls of the mating pipe (605), the water inlet pipe (607), and the water outlet pipe (608) are provided with annular grooves. The inner walls of the mating head (606) and the connector (609) are provided with annular blocks (8). The outer wall of the annular blocks (8) fits against the inner wall of the annular groove.

4. The apparatus for preparing antibacterial endotracheal tubes using EVA / polyionic liquid composite material according to claim 1, characterized in that, The inner wall of the lower pressure block (704) is provided with balls that match the first lead screw (705), and the first bevel gear (706) meshes with the second bevel gear (707).

5. The apparatus for preparing antibacterial endotracheal tubes using EVA / polyionic liquid composite material according to claim 1, characterized in that, The inner wall of the push block (709) is provided with balls that match the second lead screw (708), and the outer wall of the fixed block (702) is provided with a first inclined surface, which is in contact with one end of the push block (709).

6. The apparatus for preparing antibacterial endotracheal tubes using EVA / polyionic liquid composite material according to claim 2, characterized in that, The outer wall of the connector (609) is provided with a slot, which engages with one end of the locking block (711). The bottom end of the locking block (711) is provided with a toothed groove, and the top end of the positioning block (713) engages with the toothed groove. The outer wall of the positioning block (713) is provided with a second inclined surface, which contacts the top rod (714).

Images