A 3D printing mold for secondary molding of tracheal tube and its use method

Abstract

The invention discloses an endotracheal tube using a 3D printing mold for secondary molding and a method for using the same. The endotracheal tube comprises an endotracheal tube body and a breathing joint, wherein the endotracheal tube body comprises a thin tube body and a thick tube body for secondary molding, a sealing bag is provided at the front end of the thick tube body, and an inflation tube for inflating the sealing bag is provided, an inflation valve port is provided at the tail end of the inflation tube, the length of the thin tube body is 5cm-7cm, the length of the thick tube body is greater than 18cm, the inner diameter range of the thick tube body is 5.0mm-8.5mm, the inner diameter range of the thin tube body is 3mm-4.5mm, a thick tube support spring is buried on the inner wall of the thick tube body, a thin tube support spring is buried on the inner wall of the thin tube body, and a secondary molding mold is installed on the surface of the thin tube body. The invention manufactures a secondary molding mold according to a narrow endotracheal cavity model of a patient's condition 3D printed, secondary shapes the secondary molded endotracheal tube, and provides the patient with an optimal airway management tool with the largest inner cavity that can be inserted into the narrowest endotracheal cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of tracheal tubes, and in particular to a tracheal tube using a 3D printing mold for secondary molding and a method for using the tracheal tube. Background Art

[0002] A tracheal tube is a medical device that is inserted into the patient's trachea and / or bronchus to create a temporary artificial breathing channel for the patient, especially for those who cannot breathe independently. However, when there is a mass inside the patient's trachea, the existing tracheal tube cannot pass through the narrow part and enter the tracheal cavity. Therefore, it is very necessary to design a 3D printed mold for secondary molding of a tracheal tube that is highly practical and can adjust the shape of the trachea according to the mass in the patient's trachea. Summary of the invention

[0003] The object of the present invention is to provide a 3D printing mold for secondary molding of a tracheal tube to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a 3D printed mold for secondary molding of an endotracheal tube and a method of using the same, comprising an endotracheal tube body and a breathing connector, wherein the endotracheal tube body comprises a thin tube body and a thick tube body for secondary molding, a sealing bag is provided at the front end of the thick tube body, and an inflation tube for inflating the sealing bag is provided, an inflation valve port is provided at the tail end of the inflation tube, and a breathing support device is connected to the tail hose of the breathing connector. During surgery, the doctor can insert the endotracheal tube body into the patient's trachea. After the endotracheal tube reaches the specified position, the sealing bag can be inflated through the inflation valve port. When the sealing bag is inflated, the patient's trachea can be sealed, and then the breathing support device can be turned on. The breathing support device can assist the patient's breathing through the endotracheal tube body, and the sealing bag can maintain the sealing between the endotracheal tube and the inner wall of the patient's trachea during breathing support.

[0005] According to the above technical solution, the length of the thin tube body is 5cm-7cm, the length of the thick tube body is greater than 18cm, the inner diameter of the thick tube body is in the range of 5.0mm-8.5mm, and the inner diameter of the thin tube body is in the range of 3mm-4.5mm. The lengths of the thick tube body and the thin tube body can make them better matched. When selecting the inner diameters of the thick tube body and the thin tube body, they can be used in combination according to the following requirements:

[0006] When the inner diameter of the thick tube is 5.0 mm, the inner diameter of the thin tube is less than 4.0 mm;

[0007] When the inner diameter of the thick tube is 5.5 mm, the inner diameter of the thin tube is less than 4.0 mm;

[0008] When the inner diameter of the thick tube is 6.0 mm, the inner diameter of the thin tube is less than 4.0 mm;

[0009] When the inner diameter of the thick tube is 6.5 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0010] When the inner diameter of the thick tube is 7.0 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0011] When the inner diameter of the thick tube is 7.5 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0012] When the inner diameter of the thick tube is 8.0 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0013] When the inner diameter of the thick tube is 8.5 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0014] In this way, different inner diameters of tracheal tubes can be selected according to the inner diameter of the patient's trachea to meet the needs of different patients.

[0015] According to the above technical solution, a thick tube support spring is buried on the inner wall of the thick tube body, and a thin tube support spring is buried on the inner wall of the thin tube body. The thick tube support spring can improve the radial strength and axial flexibility of the inner wall of the thick tube body, and can also play a role in supporting the thick tube body. During the gas transmission process, the airflow will not be interrupted due to the folding of the thick tube body. The thin tube support spring can improve the radial strength and axial flexibility of the inner wall of the thin tube body, and can also play a role in supporting the thin tube body. During the heating process of the secondary molding mold, the outer wall of the thin tube body can be tightly fitted to the secondary molding mold, so that the shape of the thin tube body after heating is consistent with the shape of the secondary molding mold.

[0016] According to the above technical scheme, a secondary molding mold is installed on the surface of the capillary body, and the cross-section of the secondary molding mold is smaller than the cross-section of the narrow part of the human tracheal mass. A heating device is installed on the surface of the secondary molding mold, and a cooling device is installed on the periphery of the heating device. The tail trachea of ​​the respiratory joint is connected to a pressurizing device. When a mass appears in the patient's trachea, if the tracheal tube is directly inserted into the patient's trachea at this time, it may cause bleeding due to friction between the tube and the mass. At this time, tracheal data can be obtained according to the patient's tracheal imaging data, and a 3D image of the trachea at the narrow part can be established. According to the cross-section of the tracheal cavity at the narrowest part, a 3D print model of the tracheal cavity at the narrowest part is made, and then a secondary molding mold for the capillary body is made according to the narrow tracheal cavity model, and then the secondary molding mold is sleeved on the surface of the capillary body, and then the heating clamp is clamped to the secondary molding mold, and then the heating clamp is heated by the heating wire to soften the capillary body.

[0017] According to the above technical solution, the heating device includes a heating clamp, and the inner side of the heating clamp is electrically connected to a heating wire. The heating wire can heat the heating clamp. After the heating clamp is heated, the secondary molding mold can be heated, and then the capillary body can be heated. After heating, the capillary body will soften and deform, which is convenient for subsequent work.

[0018] According to the above technical scheme, the pressurizing equipment includes an air pump, one side of which is connected to the breathing joint by a hose, and a block is installed at the front end of the capillary body. Before the secondary molding mold heats the capillary body, the block is inserted into the air outlet in front of the capillary body and the air pump is turned on. The air pump continuously discharges air. During the process of the secondary molding mold heating the capillary body, the capillary body becomes soft and has strong plasticity due to the high temperature. Since the air pump continuously discharges air inside the capillary body and the main air outlet is blocked by the block, the airflow cannot be completely discharged. Therefore, the air pressure inside the capillary body is very high, so that the outer wall of the heated capillary body will fit tightly to the secondary molding mold due to the air pressure difference, so that even if it softens, it will not collapse, thereby ensuring the maximum ventilation flow channel.

[0019] According to the above technical solution, the cooling device includes a condensation plate outside the heating device. The cooling device can prevent the heating device from accidentally injuring the operator during the heating process, and can also cool the capillary body after it is heated and shaped so that it can be quickly cooled and shaped.

[0020] According to the above technical solution, a ventilation side hole is opened at the head of the thin tube body, and the portion where the thin tube body is secondary molded by the secondary molding mold is located from the rear edge of the ventilation side holes to the front edge of the junction of the thick tube body and the thin tube body. During the air supply process of the tracheal tube body, after adding the ventilation side holes, it can not only avoid direct exhaust gas to the patient's tracheal inner wall causing impact trauma, but also increase the gas flow of the catheter and improve the ventilation efficiency.

[0021] According to the above technical solution, the process of secondary shaping of the capillary body is:

[0022] a. Obtain tracheal data based on the patient's tracheal imaging data, establish a 3D image of the trachea at the narrowed part, and 3D print the tracheal cavity model at the narrowest part based on the cross-section of the tracheal cavity at the narrowest part;

[0023] b. Making a secondary molding mold for the capillary body according to the narrow tracheal lumen model;

[0024] c. The secondary molding mold is sleeved on the surface of the capillary body, and then the heating clamp is clamped on the secondary molding mold, and then the heating clamp is heated by the heating wire to soften the capillary body;

[0025] d. Insert the block into the air outlet in front of the capillary body, then turn on the air pump so that the air pump ventilates the endotracheal tube body through the breathing joint. During the ventilation process, the air outlet in front of the capillary body is blocked by the block, and the air flow cannot be completely discharged. The air pressure inside the capillary body is very high, so that the outer wall of the heated capillary body will fit tightly to the secondary molding mold due to the air pressure difference. At the same time, turn on the cooling device. The cooling device can prevent the heating device from accidentally injuring the operator during the heating process, and can also cool the capillary body after it is heated and shaped, so that it can be quickly cooled and shaped;

[0026] e. Turn off the air pump, remove the hose connecting the air pump and the breathing joint, remove the heating device and the block, and the secondary molding of the capillary body can be completed.

[0027] Compared with the prior art, the beneficial effect achieved by the present invention is that the shape of the trachea can be adjusted according to the mass in the trachea of ​​the patient.

[0028] (1) By providing a thick tube support spring, the radial strength and axial flexibility of the inner wall of the thick tube body can be improved, and the thick tube body can also be supported, so that the gas flow will not be interrupted due to the folding of the thick tube body during the gas transmission process;

[0029] (2) By providing a capillary support spring, the radial strength and axial flexibility of the inner wall of the capillary body can be improved, and the capillary body can also be supported. During the heating process of the secondary molding mold, the outer wall of the capillary body can be tightly fitted to the secondary molding mold, so that the shape of the capillary body after heating is consistent with the shape of the secondary molding mold.

[0030] (3) By providing a blocking block, before the secondary molding die heats the capillary body, the blocking block is inserted into the air outlet in front of the capillary body and the air pump is turned on. The air pump continuously discharges air. During the process of the secondary molding die heating the capillary body, the capillary body becomes soft and has strong plasticity due to the high temperature. Since the air pump continuously discharges air inside the capillary body and the main air outlet is blocked by the blocking block, the air flow cannot be completely discharged. Therefore, the air pressure inside the capillary body is very high, so that the outer wall of the heated capillary body will fit tightly to the secondary molding die due to the air pressure difference.

[0031] (4) By providing a ventilation side hole, during the air supply process of the tracheal tube body, adding the ventilation side hole can not only avoid direct exhaust gas to the patient's tracheal inner wall causing impact trauma, but also increase the gas flow of the tube and improve the ventilation efficiency;

[0032] (5) By providing a heating device and a secondary molding die, the front of the capillary body can be made into the shape of the cross-section of the tracheal cavity at the narrowest part of the patient through the cooperation of the heating device and the secondary molding die, so that the capillary body can pass through the narrowest part of the patient's trachea to achieve effective ventilation, and can also reduce the friction between the catheter and the mass, avoiding the risk of bleeding caused by the friction between the catheter and the mass;

[0033] (6) By providing a cooling device, the cooling equipment can prevent the heating equipment from accidentally injuring the operator during the heating process, and can also cool the capillary body after it is heated and shaped, so that it can be quickly cooled and shaped. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 It is a schematic diagram of the overall front structure of the present invention;

[0036] Figure 2 It is a partial perspective structural schematic diagram of the present invention;

[0037] Figure 3 It is a schematic diagram of the structure of the trachea mold of the present invention;

[0038] Figure 4 It is a structural schematic diagram of the heating device of the present invention;

[0039] Figure 5 It is a schematic diagram of the structure of the heating device of the present invention when it is working;

[0040] Figure 6 It is a structural schematic diagram of the heating device of the present invention after the work is finished;

[0041] Figure 7 It is a schematic diagram of a partial cross-sectional structure of the A region of the present invention;

[0042] In the figure: 1. endotracheal tube body; 2. breathing joint; 3. thin tube body; 4. thick tube body; 5. sealing bag; 6. inflation tube; 7. inflation valve port; 8. endotracheal cavity model; 9. secondary molding mold; 10. heating equipment; 11. ventilation side hole; 12. heating wire; 13. heating clamp; 14. blocking block; 15. thin tube support spring; 16. thick tube support spring. DETAILED DESCRIPTION

[0043] 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.

[0044] See also Figure 1The present invention provides a technical solution: a 3D printed mold is used for secondary molding of an endotracheal tube, comprising an endotracheal tube body 1 and a breathing connector 2, the endotracheal tube body 1 comprising a thin tube body 3 and a thick tube body 4 for secondary molding, a sealing bag 5 is provided at the front end of the thick tube body 4, and an inflation tube 6 for inflating the sealing bag 5 is provided, an inflation valve port 7 is provided at the tail end of the inflation tube 6, and a breathing support device is connected to the tail hose of the breathing connector 2. During the operation, the doctor can insert the endotracheal tube body 1 into the patient's trachea, and after the endotracheal tube reaches the specified position, the sealing bag 5 can be inflated through the inflation valve port 7. When the sealing bag 5 is inflated, the patient's trachea can be sealed, and then the breathing support device can be turned on. The breathing support device can assist the patient's breathing through the endotracheal tube body 1, and the sealing bag 5 can maintain the sealing between the endotracheal tube and the inner wall of the patient's trachea during breathing support;

[0045] The length of the thin tube body 3 is 5cm-7cm, the length of the thick tube body 4 is greater than 18cm, the inner diameter of the thick tube body 4 is in the range of 5.0mm-8.5mm, and the inner diameter of the thin tube body 3 is in the range of 3mm-4.5mm. The lengths of the thick tube body 4 and the thin tube body 3 can make them better matched. When selecting the inner diameters of the thick tube body 4 and the thin tube body 3, they can be used in combination according to the following requirements:

[0046] When the inner diameter of the thick tube is 5.0 mm, the inner diameter of the thin tube is less than 4.0 mm;

[0047] When the inner diameter of the thick tube is 5.5 mm, the inner diameter of the thin tube is less than 4.0 mm;

[0048] When the inner diameter of the thick tube is 6.0 mm, the inner diameter of the thin tube is less than 4.0 mm;

[0049] When the inner diameter of the thick tube is 6.5 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0050] When the inner diameter of the thick tube is 7.0 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0051] When the inner diameter of the thick tube is 7.5 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0052] When the inner diameter of the thick tube is 8.0 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0053] When the inner diameter of the thick tube is 8.5 mm, the inner diameter of the thin tube is less than 4.5 mm; thus, different inner diameters of tracheal tubes can be selected according to the inner diameter of the patient's trachea to meet the needs of different patients.

[0054] A thick tube support spring 16 is embedded on the inner wall of the thick tube body 4, and a thin tube support spring 15 is embedded on the inner wall of the thin tube body 3. The thick tube support spring 15 can improve the radial strength and axial flexibility of the inner wall of the thick tube 4, and can also play a role in supporting the thick tube body 4. During the gas transmission process, the airflow will not be interrupted due to the folding of the thick tube body 4. The thin tube support spring 15 can improve the radial strength and axial flexibility of the inner wall of the thin tube 3, and can also play a role in supporting the thin tube body 3. During the heating process of the secondary molding mold 9, the outer wall of the thin tube body 3 can be tightly attached to the secondary molding mold 9, so that the shape of the thin tube body 3 after heating is consistent with the shape of the secondary molding mold 9;

[0055] A secondary molding die 9 is installed on the surface of the capillary body 3. The cross section of the secondary molding die 9 is smaller than the cross section of the narrow part of the tracheal mass. A heating device 10 is installed on the surface of the secondary molding die 9. A cooling device is installed on the periphery of the heating device 10. The tail trachea of ​​the respiratory connector 2 is connected to a pressurizing device. When a mass appears in the patient's trachea, if the tracheal tube is directly inserted into the patient's trachea at this time, it may cause bleeding due to friction between the tube and the mass. At this time, the tracheal data can be obtained according to the patient's tracheal imaging data, and a 3D image of the trachea at the narrow part can be established. According to the cross section of the tracheal cavity at the narrowest part, a 3D print of the tracheal cavity model 8 at the narrowest part is made, and then the secondary molding die 9 for the capillary body is made according to the narrow tracheal cavity model 8, and then the secondary molding die 9 is sleeved on the surface of the capillary body 3, and then the heating clamp 13 is clamped to hold the secondary molding die 9, and then the heating clamp 13 is heated by the heating wire 12 to soften the capillary body 3;

[0056] The heating device 10 includes a heating clamp 13, the inner side of which is electrically connected to a heating wire 12, and the heating wire 12 can heat the heating clamp 13, and after the heating clamp 13 is heated, the secondary molding mold 9 can be heated, and then the capillary body 3 can be heated, and the capillary body 3 will soften and deform after being heated, which is convenient for subsequent work;

[0057] The pressurizing device includes an air pump, one side of which is connected to the breathing connector 2 through a hose. A blocking block 14 is installed at the front end of the capillary body 3. Before the secondary molding die 9 heats the capillary body 3, the blocking block 14 is inserted into the air outlet in front of the capillary body 3 and the air pump is turned on. The air pump continuously discharges air. During the process of the secondary molding die 9 heating the capillary body 3, the capillary body 3 becomes soft and has strong plasticity due to the high temperature. Since the air pump continuously discharges air inside the capillary body 3, and the main air outlet is blocked by the blocking block 14, the air flow cannot be completely discharged. Therefore, the air pressure inside the capillary body 3 is very high, so that the outer wall of the heated capillary body 3 will fit tightly to the secondary molding die 9 due to the air pressure difference, so that even if it softens, it will not collapse, and the maximum ventilation flow channel can be guaranteed;

[0058] The cooling device includes a condensation plate outside the heating device 10. The cooling device can prevent the heating device from accidentally injuring the operator during the heating process, and can also cool the capillary body after heating and shaping, so that it can be quickly cooled and shaped.

[0059] The head of the thin tube body 3 is provided with a ventilation side hole 11, and the portion of the thin tube body 3 that is secondary molded by the secondary molding mold 9 is located from the rear edge of the ventilation side holes 11 to the front edge of the junction of the thick tube body 4 and the thin tube body 3. During the air supply process of the tracheal tube body 1, the addition of the ventilation side hole 11 can not only avoid direct exhaust of gas to the patient's tracheal inner wall causing impact trauma, but also increase the gas flow of the tube and improve the ventilation efficiency;

[0060] Working principle:

[0061] The rear hose of the breathing connector 2 is connected with a breathing support device. During the operation, the doctor can insert the tracheal tube body 1 into the patient's trachea. After the tracheal tube reaches the specified position, the sealing bag 5 can be inflated through the inflation valve port 7. When the sealing bag 5 is inflated, the patient's trachea can be sealed, and then the breathing support device can be turned on. The breathing support device can assist the patient's breathing through the tracheal tube body 1. The sealing bag 5 can maintain the sealing between the tracheal tube and the inner wall of the patient's trachea during breathing support. The lengths of the thick tube body and the thin tube body can make them better matched. When selecting the inner diameters of the thick tube body and the thin tube body, they can be used in combination according to the following requirements:

[0062] When the inner diameter of the thick tube is 5.0 mm, the inner diameter of the thin tube is less than 4.0 mm;

[0063] When the inner diameter of the thick tube is 5.5 mm, the inner diameter of the thin tube is less than 4.0 mm;

[0064] When the inner diameter of the thick tube is 6.0 mm, the inner diameter of the thin tube is less than 4.0 mm;

[0065] When the inner diameter of the thick tube is 6.5 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0066] When the inner diameter of the thick tube is 7.0 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0067] When the inner diameter of the thick tube is 7.5 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0068] When the inner diameter of the thick tube is 8.0 mm, the inner diameter of the thin tube is less than 4.5 mm;

[0069] When the inner diameter of the thick tube is 8.5mm, the inner diameter of the thin tube is less than 4.5mm; in this way, different inner diameters of tracheal tubes can be selected according to the inner diameter of the patient's trachea to meet the needs of different patients. The thick tube support spring 15 can improve the radial strength and axial flexibility of the inner wall of the thick tube 4, and can also play a role in supporting the thick tube body 4. During the gas transmission process, the airflow will not be interrupted due to the folding of the thick tube body 4. The thin tube support spring 15 can improve the radial strength and axial flexibility of the inner wall of the thin tube 3, and can also play a role in supporting the thin tube body 3, so that the outer wall of the thin tube body 3 can fit tightly to the secondary molding during the heating process of the secondary molding mold 9. The mold 9 makes the shape of the capillary body 3 consistent with the shape of the secondary molding mold 9 after heating. When a mass appears in the patient's trachea, if the tracheal tube is directly inserted into the patient's trachea at this time, it may cause bleeding due to friction between the tube and the mass. At this time, the tracheal data can be obtained according to the patient's tracheal imaging data, and a 3D image of the trachea at the narrowed part can be established. According to the cross-section of the tracheal cavity at the narrowest part, a 3D print model 8 of the tracheal cavity at the narrowest part is made, and then a secondary molding mold 9 for the capillary body is made according to the narrow tracheal cavity model 8. Then, the secondary molding mold 9 is sleeved on the surface of the capillary body 3, and then the heating clamp 13 is clamped to hold the secondary molding mold 9. Subsequently, the heating clamp 13 is heated by the heating wire 12 to soften the capillary body 3. The heating wire 12 can heat the heating clamp 13. After the heating clamp 13 is heated, the secondary molding mold 9 can be heated, and finally the capillary body 3 can be heated. After the capillary body 3 is heated, it will soften and deform, which is convenient for subsequent work. Before the secondary molding mold 9 heats the capillary body 3, the blocking block 14 is inserted into the air outlet in front of the capillary body 3 and the air pump is turned on. The air pump continuously discharges air. In the process of the secondary molding mold 9 heating the capillary body 3, the capillary body 3 will become soft and plastic due to the high temperature. The inside of the capillary body 3 continues to discharge air due to the air pump, and the main air outlet is blocked by the blocking block 14. The airflow cannot be completely discharged, so the air pressure inside the capillary body 3 is very high, so that the outer wall of the heated capillary body 3 will fit tightly to the secondary molding die 9 due to the air pressure difference, so that even if it softens, it will not collapse, and the maximum ventilation flow channel can be guaranteed. The cooling device can prevent the heating device from accidentally injuring the operator during the heating process, and can also cool the capillary body after it is heated and shaped, so that it can be cooled quickly. During the air supply process of the tracheal tube body 1, after adding the ventilation side hole 11, it can not only avoid the impact trauma caused by direct exhaust of air to the inner wall of the patient's trachea, but also increase the gas flow of the catheter and improve the ventilation efficiency.

[0070] Example:

[0071] a. Obtain tracheal data based on the patient's tracheal imaging data, establish a 3D image of the trachea at the narrowed part, and 3D print the tracheal cavity model at the narrowest part based on the cross-section of the tracheal cavity at the narrowest part;

[0072] b. Making a secondary molding mold for the capillary body according to the narrow tracheal lumen model;

[0073] c. The secondary molding mold is sleeved on the surface of the capillary body, and then the heating clamp is clamped on the secondary molding mold, and then the heating clamp is heated by the heating wire to soften the capillary body;

[0074] d. Insert the block into the air outlet in front of the capillary body, then turn on the air pump so that the air pump ventilates the endotracheal tube body through the breathing joint. During the ventilation process, the air outlet in front of the capillary body is blocked by the block, and the air flow cannot be completely discharged. The air pressure inside the capillary body is very high, so that the outer wall of the heated capillary body will fit tightly to the secondary molding mold due to the air pressure difference. At the same time, turn on the cooling device. The cooling device can prevent the heating device from accidentally injuring the operator during the heating process, and can also cool the capillary body after it is heated and shaped, so that it can be quickly cooled and shaped;

[0075] e. Turn off the air pump, remove the hose connecting the air pump and the breathing joint, remove the heating device and the block, and the secondary molding of the capillary body can be completed.

[0076] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0077] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A 3D printed mold for secondary molding of a tracheal tube, characterized in that: The invention comprises an endotracheal tube body (1) and a breathing joint (2), wherein the endotracheal tube body (1) comprises a thin tube body (3) and a thick tube body (4) for secondary molding, a sealing bag (5) is provided at the front end of the thick tube body (4), and an inflation tube (6) for inflating the sealing bag (5) is provided, and an inflation valve port (7) is provided at the rear end of the inflation tube (6); The length of the thin tube (3) is 5 cm-7 cm, the length of the thick tube (4) is greater than 18 cm, the inner diameter of the thick tube (4) is in the range of 5.0 mm-8.5 mm, and the inner diameter of the thin tube (3) is in the range of 3 mm-4.5 mm; A thick tube support spring (16) is embedded in the inner wall of the thick tube body (4), and a thin tube support spring (15) is embedded in the inner wall of the thin tube body (3); A secondary molding die (9) is installed on the surface of the capillary body (3), the cross section of the secondary molding die (9) is 0.5 mm to 1 mm smaller than the cross section of the narrow part of the human tracheal mass, a heating device (10) is installed on the surface of the secondary molding die (9), a cooling device is installed on the periphery of the heating device (10), and a pressurizing device is connected to the tail trachea of ​​the breathing joint (2); The heating device (10) comprises a heating clamp (13), the inner side of the heating clamp (13) being electrically connected to a heating wire (12); The pressurizing device comprises an air pump, one side of which is connected to the breathing joint (2) via a hose, and a blocking block (14) is installed at the front end of the capillary body (3); The cooling device comprises a condensation plate on the periphery of the heating device (10); The head of the thin tube body (3) is provided with a ventilation side hole (11), and the portion where the thin tube body (3) is secondary molded by the secondary molding die (9) is located from the rear edge of the ventilation side holes (11) to the front edge of the junction between the thick tube body (4) and the thin tube body (3).

2. A method for using a 3D printed mold for secondary molding of an endotracheal tube, characterized in that: The process of secondary shaping of the capillary body (3) is as follows: a. Obtain tracheal data based on the patient's tracheal imaging data, establish a 3D image of the trachea at the narrowed part, and 3D print a tracheal lumen model of the narrowest part based on the cross-section of the tracheal lumen at the narrowest part (8); b. Making a secondary molding mold (9) for the capillary body according to the narrow tracheal lumen model (8); c. The secondary molding die (9) is sleeved on the surface of the capillary body (3), and then the heating clamp (13) is clamped around the secondary molding die (9), and then the heating clamp (13) is heated by the heating wire (12) to soften the capillary body (3); d. Insert the block (14) into the air outlet in front of the capillary body (3), then turn on the air pump so that the air pump ventilates the tracheal tube body (1) through the breathing connector (2). During the ventilation process, the air outlet in front of the capillary body (3) is blocked by the block, and the air flow cannot be completely discharged. The air pressure inside the capillary body (3) is very high, so that the outer wall of the heated capillary body (3) will fit tightly to the secondary molding mold (9) due to the air pressure difference. At the same time, turn on the cooling device, which is used to prevent the heating device (10) from accidentally injuring the operator during the heating process, and to cool the capillary body (3) after it is heated and shaped, so that it can be quickly cooled and shaped; e. Turn off the air pump, remove the hose connecting the air pump and the breathing joint (2), remove the heating device (10) and the block (14), and the secondary molding of the capillary body (3) can be completed.

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