CN111991668A

CN111991668A - 3D printing mold used for secondary forming tracheal catheter and using method thereof

Info

Publication number: CN111991668A
Application number: CN202011038482.1A
Authority: CN
Inventors: 朱敏敏; 肖大江; 夏加增
Original assignee: Wuxi No 2 Peoples Hospital
Current assignee: Wuxi No 2 Peoples Hospital
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2020-11-27

Abstract

The invention discloses a 3D printing die for a secondary forming tracheal catheter and a using method thereof, the 3D printing die comprises a tracheal catheter body and a breathing joint, the tracheal catheter body comprises a thin tube body and a thick tube body for secondary forming, a sealing bag is arranged at the front end of the thick tube body, an inflation tube for inflating the sealing bag is arranged at the tail end of the inflation tube, an inflation valve port is arranged 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 more 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 supporting spring is embedded on the inner wall of the thick tube body, a thin tube supporting spring is embedded on the inner wall of the thin tube body, and a secondary forming die is arranged on the surface of the thin tube body, the secondary forming die is manufactured according to a narrow, the secondary shaping of the secondary-shaped tracheal catheter provides the best airway management tool which can be placed in the narrowest tracheal cavity and has the largest inner cavity for a patient.

Description

3D printing mold used for secondary forming tracheal catheter and using method thereof

Technical Field

The invention relates to the technical field of tracheal catheters, in particular to a tracheal catheter with a 3D printing mold for secondary forming and a using method thereof.

Background

The tracheal catheter is a medical instrument which is inserted into the trachea and/or bronchus of a patient and is used for creating a temporary artificial respiration channel for the patient, particularly for the patient who can not breathe independently, and when the trachea of the patient has a tumor, the tracheal catheter can not pass through a narrow part and enter the tracheal cavity, so that the tracheal catheter is high in practicability and necessary for designing a 3D printing mold for secondary forming, wherein the shape of the trachea can be adjusted according to the tumor in the trachea of the patient.

Disclosure of Invention

The invention aims to provide a 3D printing mold for a secondary forming tracheal catheter, so as to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: A3D printing mold is used for a secondary forming tracheal catheter and a using method thereof, comprises a tracheal catheter body and a breathing joint, the tracheal catheter body comprises a thin tube body and a thick tube body which are used for secondary forming, a sealing bag is arranged at the front end of the thick tube body, an inflation tube for inflating the sealing bag is arranged at the front end of the thick tube body, an inflation valve port is arranged at the tail end of the inflation tube, the tail hose of the breathing joint is connected with breathing support equipment, during the operation, a doctor can insert the tracheal catheter into the trachea of a patient, after the tracheal catheter reaches the designated position, the sealing bag can be inflated through the inflation valve port, after the sealing bag is inflated, can seal patient's trachea, can open respiratory support equipment afterwards, respiratory support equipment can be through the supplementary patient of endotracheal tube body breathing, and the leakproofness of endotracheal tube and patient's endotracheal tube wall can be kept to the sealed bag when respiratory support.

According to the technical scheme, the length of the thin pipe body is 5cm-7cm, the length of the thick pipe body is greater than 18cm, the inner diameter range of the thick pipe body is 5.0mm-8.5mm, the inner diameter range of the thin pipe body is 3mm-4.5mm, the lengths of the thick pipe body and the thin pipe body can be better matched, and the thin pipe body and the thick pipe body can be matched according to the following requirements when the inner diameter of the thick pipe body and the inner diameter of the thin pipe body are selected:

when the inner diameter of the thick pipe body is 5.0mm, the inner diameter of the thin pipe body is less than 4.0 mm;

when the inner diameter of the thick pipe body is 5.5mm, the inner diameter of the thin pipe body is less than 4.0 mm;

when the inner diameter of the thick pipe body is 6.0mm, the inner diameter of the thin pipe body is less than 4.0 mm;

when the inner diameter of the thick pipe body is 6.5mm, the inner diameter of the thin pipe body is less than 4.5 mm;

when the inner diameter of the thick pipe body is 7.0mm, the inner diameter of the thin pipe body is less than 4.5 mm;

when the inner diameter of the thick pipe body is 7.5mm, the inner diameter of the thin pipe body is less than 4.5 mm;

when the inner diameter of the thick pipe body is 8.0mm, the inner diameter of the thin pipe body is less than 4.5 mm;

when the inner diameter of the thick pipe body is 8.5mm, the inner diameter of the thin pipe body is less than 4.5 mm;

therefore, different inner diameters of the tracheal catheter can be selected according to the inner diameter of the trachea of the patient so as to meet the requirements of different patients.

According to the technical scheme, thick pipe supporting spring has been buried underground on the inner wall of thick body, thin pipe supporting spring has been buried underground on the inner wall of thin body, thick pipe supporting spring can improve the radial strength and the axial compliance of thick body inner wall, can also play the effect of supporting thick body, can not lead to the air current to interrupt because thick body is folding at the gas transmission in-process, thin pipe supporting spring can improve the radial strength and the axial compliance of thin body inner wall, can also play the effect of supporting thin body, can make the secondary forming mould that tightly laminates of thin body outer wall in secondary forming mould heating process, make thin body shape and secondary forming mould shape unanimous after the heating.

According to the technical scheme, a secondary forming die is arranged on the surface of the thin tube body, the cross section of the secondary forming die is smaller than the cross section of a narrow part of a trachea lump of a patient, a heating device is arranged on the surface of the secondary forming die, a cooling device is arranged on the periphery of the heating device, a tail trachea of the breathing joint is connected with a pressurizing device, when the lump appears in the trachea of the patient, if a tracheal catheter is directly inserted into the trachea of the patient at the moment, the catheter and the lump can bleed due to friction, at the moment, tracheal data can be obtained according to tracheal image data of the patient, a 3D image of a trachea at the narrow part is built, a tracheal inner cavity model at the narrowest part is printed in a 3D mode according to the tracheal inner cross section at the narrowest part, then the secondary forming die for the thin tube body is manufactured according to the tracheal inner cavity model, and, then the heating clamp is clamped on the secondary forming die, and then the heating clamp is heated through a heating wire, so that the thin tube body is softened.

According to above-mentioned technical scheme, firing equipment presss from both sides including the heating, the inboard electricity that the heating pressed from both sides is connected with heating wire, and heating wire can be so that the heating presss from both sides the heating, can heat post secondary forming mould after the heating presss from both sides the heating, and the back can be with tubule body heating, can soften the deformation after tubule body heating, makes things convenient for its follow-up work.

According to the technical scheme, the pressurizing device comprises an air pump, one side of the air pump is connected with the breathing joint through a hose, a blocking block is installed at the front end of the thin tube body, the air pump is started after the blocking block is inserted into an air outlet in front of the thin tube body before the thin tube body is heated by a secondary forming die, the air pump continuously gives out air, the thin tube body becomes soft due to high temperature and is high in plasticity in the process of heating the thin tube body by the secondary forming die, the interior of the thin tube body is continuously given out air due to the air pump, a main air outlet is blocked by the blocking block, air flow cannot be completely discharged, air pressure inside the thin tube body is high, the outer wall of the heated thin tube body can be tightly attached to the secondary forming die due to air pressure difference, the situation that the heated thin tube body is not collapsed even if.

According to the technical scheme, the cooling device comprises the condensing plate on the periphery of the heating device, the cooling device can prevent the heating device from accidentally injuring an operator in the heating process, and the cooling device can also cool the capillary body after the heating device is shaped, so that the capillary body can be rapidly cooled and shaped.

According to the technical scheme, the head of the thin tube body is provided with the ventilation side holes, the secondary forming die is used for carrying out secondary forming on the thin tube body, the secondary forming die is positioned at the rear edges of the ventilation side holes to the front edge of the junction of the thick tube body and the thin tube body, in the air supply process of the tracheal catheter body, after the ventilation side holes are increased, impact wounds caused by direct exhaust of the inner tracheal wall of a patient can be avoided, the gas flow of the catheter can be increased, and the ventilation efficiency is improved.

According to the technical scheme, the secondary shaping process of the thin tube body comprises the following steps:

a. acquiring trachea data according to trachea image data of a patient, establishing a 3D image of a narrow trachea, and 3D printing a narrowest trachea inner cavity model according to a narrowest trachea inner cavity section;

b. manufacturing a secondary forming die for the thin tube body according to the narrow trachea inner cavity model;

c. sleeving a secondary forming mold on the surface of the thin tube body, clamping the secondary forming mold by a heating clamp, and heating the heating clamp by a heating wire to soften the thin tube body;

d. the blocking block is inserted into the air outlet in front of the thin tube body, then the air pump is started, so that the air pump ventilates the tracheal tube body through the breathing joint, in the ventilating process, the air outlet in front of the thin tube body is blocked by the blocking block, air flow can not be completely discharged, the air pressure in the thin tube body is very high, so that the outer wall of the heated thin tube body can be tightly attached to a secondary forming mold due to air pressure difference, and meanwhile, the cooling device is started, the cooling device can prevent the heating device from accidentally injuring operators in the heating process, and can also cool the thin tube body after being heated and shaped, so that the thin tube body can be rapidly cooled and shaped;

e. and (4) closing the air pump, taking down the hose connected with the air pump and the breathing joint, and taking down the heating equipment and the block, thus finishing the secondary forming manufacture of the thin tube body.

Compared with the prior art, the invention has the following beneficial effects: the shape of the trachea can be adjusted according to the tumor inside the trachea of the patient, and the invention,

(1) the thick pipe supporting spring is arranged, so that the radial strength and the axial flexibility of the inner wall of the thick pipe body can be improved, the effect of supporting the thick pipe body can be achieved, and the airflow interruption caused by the folding of the thick pipe body in the gas transmission process can be avoided;

(2) through being provided with tubule supporting spring, can improve the radial intensity and the axial compliance of tubule body inner wall, can also play the effect of supporting the tubule body, can make the external wall of tubule body tightly laminate post forming mould at post forming mould heating process for the tubule body shape is unanimous with the post forming mould shape after the heating.

(3) The blocking block is arranged, before the secondary forming die heats the thin tube body, the blocking block is inserted into the air outlet in front of the thin tube body, the air pump is started, the air pump continuously gives out air, in the process that the secondary forming die heats the thin tube body, the thin tube body becomes soft due to high temperature and strong in plasticity, the air pump continuously gives out air in the thin tube body, the main air outlet is blocked by the blocking block, air flow cannot be completely discharged, and therefore air pressure in the thin tube body is large, and the outer wall of the heated thin tube body can be tightly attached to the secondary forming die due to air pressure difference;

(4) by arranging the ventilation side holes, in the process of supplying air to the tracheal catheter body, after the ventilation side holes are added, impact wounds caused by direct exhaust of the inner wall of the trachea of a patient can be avoided, the gas flow of the catheter can be increased, and the ventilation efficiency is improved;

(5) by arranging the heating device and the secondary forming die, the front part of the thin tube body can be made into the shape of the section in the tracheal cavity of the narrowest part of the patient by matching the heating device and the secondary forming die, so that the thin tube body can pass through the narrowest part of the trachea of the patient to achieve the effect of effective ventilation, the friction between the catheter and the tumor can be reduced, and the risks of bleeding and the like caused by the friction between the catheter and the tumor are avoided;

(6) through being provided with cooling device, cooling arrangement can prevent to heat firing equipment and injure operating personnel's mistake in the heating process, also can be for its cooling after the tubule body heating is moulding, makes it can cool off the design fast.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic overall elevational view of the present invention;

FIG. 2 is a schematic view of a partial perspective structure of the present invention;

FIG. 3 is a schematic view of the tracheal mold of the present invention;

FIG. 4 is a schematic view of the heating apparatus of the present invention;

FIG. 5 is a schematic view of the heating apparatus of the present invention in operation;

FIG. 6 is a schematic structural view of the heating apparatus of the present invention after completion of its operation;

FIG. 7 is a partial sectional structural view of the area A of the present invention;

in the figure: 1. a tracheal catheter body; 2. a breathing joint; 3. a capillary body; 4. a thick pipe body; 5. sealing the bag; 6. an inflation tube; 7. an inflation valve port; 8. an endotracheal cavity model; 9. secondary molding of the mold; 10. a heating device; 11. a lateral vent hole; 12. heating the wire; 13. heating the clamp; 14. blocking; 15. a thin tube support spring; 16. the thick tube supports the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: A3D printing die is used for a secondary forming tracheal catheter, which comprises a tracheal catheter body 1 and a breathing joint 2, wherein the tracheal catheter body 1 comprises a thin tube body 3 and a thick tube body 4 which are used for secondary forming, a sealing bag 5 is arranged at the front end of the thick tube body 4, an inflation tube 6 for inflating the sealing bag 5 is arranged, an inflation valve port 7 is arranged at the tail end of the inflation tube 6, the tail hose of the breathing joint 2 is connected with a breathing support device, during the operation, a doctor can insert the tracheal catheter body 1 into the trachea of a patient, after the tracheal catheter reaches the designated position, the sealing bag 5 can be inflated through the inflation valve port 7, after the sealing bag 5 is inflated, the trachea of a patient can be sealed, then the breathing support equipment can be started, the breathing support equipment can assist the patient to breathe through the tracheal catheter tube body 1, and the sealing bag 5 can keep the tightness between the tracheal catheter and the inner wall of the trachea of the patient during breathing support;

the length of tubule body 3 is 5cm-7cm, and the length of thick body 4 is greater than 18cm, and thick body 4 internal diameter scope is 5.0mm-8.5mm, and the internal diameter scope of tubule body 3 is 3mm-4.5mm, and thick body 4 and tubule body 3's length can make it cooperate better, when chooseing for use thick body 4 and tubule body 3's internal diameter, can cooperate according to following demand and use:

when the inner diameter of the thick pipe body is 8.5mm, the inner diameter of the thin pipe body is less than 4.5 mm; therefore, different inner diameters of the tracheal catheter can be selected according to the inner diameter of the trachea of the patient so as to meet the requirements of different patients.

A thick pipe supporting spring 16 is embedded in the inner wall of the thick pipe body 4, a thin pipe supporting spring 15 is embedded in the inner wall of the thin pipe body 3, the thick pipe supporting spring 15 can improve the radial strength and the axial flexibility of the inner wall of the thick pipe body 4, and can also play a role in supporting the thick pipe body 4, airflow interruption caused by folding of the thick pipe body 4 in the gas transmission process can be avoided, the thin pipe supporting spring 15 can improve the radial strength and the axial flexibility of the inner wall of the thin pipe body 3, and can also play a role in supporting the thin pipe body 3, the outer wall of the thin pipe body 3 can be tightly attached to a secondary forming mold 9 in the heating process of the secondary forming mold 9, and the shape of the thin pipe body 3 after being heated is consistent with the shape of;

the surface of the thin tube body 3 is provided with a secondary forming mould 9, the section of the secondary forming mould 9 is smaller than the section of a narrow part of a human trachea lump, the surface of the secondary forming mould 9 is provided with a heating device 10, the periphery of the heating device 10 is provided with a cooling device, the tail part trachea of the breathing joint 2 is connected with a pressurizing device, when the lump appears in the trachea of a patient, if the tracheal catheter is directly inserted into the trachea of the patient at the moment, the bleeding of the catheter and the lump due to friction can be caused, at the moment, the tracheal data can be obtained according to the image data of the trachea of the patient, a 3D image of the trachea at the narrow part is built, a 3D printing tracheal inner cavity model 8 at the narrowest part is carried out according to the tracheal inner cavity section at the narrowest part, then the secondary forming mould 9 for the thin tube body is manufactured according to the, then clamping the secondary forming die 9 by the heating clamp 13, and heating the heating clamp 13 by the heating wire 12 to soften the thin tube body 3;

the heating device 10 comprises a heating clamp 13, the inner side of the heating clamp 13 is electrically connected with a heating wire 12, the heating wire 12 can heat the heating clamp 13, the secondary forming die 9 can be heated after the heating clamp 13 is heated, the thin tube body 3 can be heated, and the thin tube body 3 can be softened and deformed after being heated, so that the subsequent work of the thin tube body is facilitated;

the pressurizing device comprises an air pump, one side of the air pump is connected with the breathing joint 2 through a hose, a plugging block 14 is installed at the front end of the thin tube body 3, the air pump is started after the plugging block 14 is inserted into an air outlet in front of the thin tube body 3 before the thin tube body 3 is heated by the secondary forming die 9, the air pump continuously gives air, the thin tube body 3 becomes soft and has strong plasticity due to high temperature in the process that the thin tube body 3 is heated by the secondary forming die 9, the interior of the thin tube body 3 continuously gives air due to the air pump, the main air outlet is plugged by the plugging block 14, and air flow cannot be completely discharged, so that the air pressure in the thin tube body 3 is high, the outer wall of the heated thin tube body 3 can be tightly attached to the secondary forming die 9 due to air pressure difference, the situation of collapse cannot occur even if the thin;

the cooling device comprises a condensing plate on the periphery of the heating device 10, the cooling device can prevent the heating device from accidentally injuring an operator in the heating process, and can also cool the operation device after the thin tube body is heated and shaped, so that the operation device can be rapidly cooled and shaped

The head of the thin tube body 3 is provided with a ventilation side hole 11, the secondary forming mould 9 is used for carrying out secondary forming on the thin tube body 3, and the part of the thin tube body 3 is positioned 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, and in the air supply process of the tracheal catheter body 1, after the ventilation side holes 11 are added, not only can the impact wound caused by direct exhaust on the inner wall of the trachea of a patient be avoided, but also the air flow of the catheter can be increased, and the;

the working principle is as follows:

the hose connection of afterbody at breathing joint 2 has the support equipment of breathing, in operation process, the doctor can insert patient's trachea with endotracheal tube body 1, reach the assigned position back at endotracheal tube, can aerify for sealed bag 5 through aerifing valve port 7, aerify the back when sealed bag 5, can be sealed with patient's trachea, can open the support equipment of breathing afterwards, the support equipment of breathing can breathe through endotracheal tube body 1 assistance patient, sealed bag 5 can be when breathing and support, keep endotracheal tube and patient's endotracheal wall's leakproofness, the length of thick body and tubule body can make it cooperate better, when selecting for use the internal diameter of thick body and tubule body, can use according to the cooperation of following demand:

when the inner diameter of the thick pipe body is 8.5mm, the inner diameter of the thin pipe body is less than 4.5 mm; thus, different inner diameters of the tracheal catheter can be selected according to the inner diameter of the trachea of a patient to adapt to different requirements of the patient, the thick tube supporting spring 15 can improve the radial strength and the axial flexibility of the inner wall of the thick tube 4 and can also play a role of supporting the thick tube 4, the airflow interruption caused by the folding of the thick tube 4 in the process of gas transmission can not occur, the thin tube supporting spring 15 can improve the radial strength and the axial flexibility of the inner wall of the thin tube 3 and can also play a role of supporting the thin tube 3, the outer wall of the thin tube 3 can be tightly attached to the secondary forming die 9 in the heating process of the secondary forming die 9, the shape of the thin tube 3 after being heated is consistent with the shape of the secondary forming die 9, when the lump appears in the trachea of the patient, if the tracheal catheter is directly inserted into the trachea of the patient at the moment, the bleeding of the, at the moment, trachea data can be obtained according to trachea image data of a patient, a 3D image of a narrow trachea is established, a 3D printing narrowest trachea inner cavity model 8 is performed according to the narrowest trachea inner cavity section, then a secondary forming mould 9 for the thin tube body is manufactured according to the narrow trachea inner cavity model 8, then the secondary forming mould 9 is sleeved on the surface of the thin tube body 3, then a heating clamp 13 clamps the secondary forming mould 9, then the heating clamp 13 is heated through a heating wire 12, the thin tube body 3 is softened, the heating wire 12 can heat the heating clamp 13, the secondary forming mould 9 can be heated after the heating clamp 13 is heated, then the thin tube body 3 can be heated, the thin tube body 3 can be softened and deformed after being heated, the subsequent work is convenient, before the thin tube body 3 is heated by the secondary forming mould 9, a blocking block 14 is inserted into an air outlet in front of the thin tube body 3, an air pump is started, the air pump continuously gives vent to air, in the process of heating the thin tube body 3 by the secondary forming die 9, the thin tube body 3 becomes soft due to high temperature, the plasticity is strong, the interior of the thin tube body 3 is continuously given vent to air due to the air pump, the main air outlet is blocked by the blocking block 14, and the air flow can not be completely discharged, so that the air pressure in the thin tube body 3 is large, the outer wall of the heated thin tube body 3 can be tightly attached to the secondary forming die 9 due to air pressure difference, the collapse condition can not occur even if the thin tube body is softened, the maximum air flow channel can be ensured, the cooling device can prevent the heating device from accidentally injuring operators in the heating process, the cooling device can also cool the thin tube body after the heating and shaping of the thin tube body, the cooling device can rapidly cool and fix the thin tube body, in the air supply process of the tracheal catheter body 1, after the ventilation side hole 11 is added, the gas flow of the catheter can be increased, and the ventilation efficiency is improved.

Example (b):

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a 3D printing die is used for fashioned endotracheal tube of secondary, its characterized in that: the novel tracheal catheter comprises a tracheal catheter body (1) and a breathing joint (2), wherein the tracheal catheter body (1) comprises a thin catheter body (3) and a thick catheter body (4) which are used for secondary forming, a sealing bag (5) is arranged at the front end of the thick catheter body (4), an inflation tube (6) which inflates the sealing bag (5) is arranged, and an inflation valve port (7) is arranged at the tail end of the inflation tube (6).

2. The endotracheal tube of claim 1, wherein the 3D printing mold is used for post forming: the length of the thin tube body (3) is 5cm-7cm, the length of the thick tube body (4) is larger than 18cm, the inner diameter range of the thick tube body (4) is 5.0mm-8.5mm, and the inner diameter range of the thin tube body (3) is 3mm-4.5 mm.

3. The endotracheal tube of claim 2, wherein the 3D printing mold is for post forming: a thick pipe supporting spring (16) is buried in the inner wall of the thick pipe body (4), and a thin pipe supporting spring (15) is buried in the inner wall of the thin pipe body (3).

4. The endotracheal tube of claim 3 where the 3D printing mold is used for post forming, characterized by: the surface mounting of tubule body (3) has post forming die (9), the cross-section of post forming die (9) is less than the narrow department cross-section 0.5mm-1mm of human trachea lump, the surface mounting of post forming die (9) has firing equipment (10), cooling arrangement is installed to the periphery of firing equipment (10), the afterbody trachea connection of breathing joint (2) has pressure equipment.

5. The endotracheal tube of claim 4 where the 3D printing mold is used for post forming, characterized by: the heating device (10) comprises a heating clamp (13), and a heating wire (12) is electrically connected to the inner side of the heating clamp (13).

6. The endotracheal tube of claim 5, wherein the 3D printing mold is used for post forming: the pressurizing equipment comprises an air pump, one side of the air pump is connected with the breathing joint (2) through a hose, and the front end of the thin pipe body (3) is provided with a blocking block (14).

7. The endotracheal tube of claim 6, wherein the 3D printing mold is used for post forming: the cooling device comprises a condensation plate at the periphery of the heating device (10).

8. The endotracheal tube of claim 7, wherein the 3D printing mold is used for post forming: the head of the thin tube body (3) is provided with a ventilation side hole (11), and the secondary forming die (9) is used for secondarily forming the thin tube body (3) at the position 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).

9. The utility model provides a 3D prints mould and is used for fashioned endotracheal tube's application method of secondary, its characterized in that: the secondary shaping process of the thin tube body (3) comprises the following steps:

a. acquiring trachea data according to the trachea image data of a patient, establishing a 3D image of a narrow trachea, and 3D printing a narrowest trachea inner cavity model (8) according to the section in the narrowest trachea;

b. manufacturing a secondary forming die (9) for the thin tube body according to the narrow air tube inner cavity model (8);

c. sleeving the secondary forming mold (9) on the surface of the thin pipe body (3), and then clamping the heating clamp (13)

Clamping the secondary forming die (9), and then heating the heating clamp (13) through the heating wire (12) to soften the thin tube body (3);

d. inserting the plugging block (14) into an air outlet in front of the thin tube body (3), then starting an air pump, so that the air pump can ventilate the tracheal catheter body (1) through the breathing joint (2), in the ventilating process, because the air outlet in front of the thin tube body (3) is plugged by the plugging block, air flow cannot be completely discharged, the air pressure in the thin tube body (3) is very high, the outer wall of the heated thin tube body (3) can be tightly attached to a secondary forming die (9) due to air pressure difference, and meanwhile, a cooling device is opened, the cooling device can prevent accidental injury of a heating device (10) to operators in the heating process, and the thin tube body (3) can be cooled after being heated and shaped, so that the thin tube body can be rapidly cooled and shaped;

e. and (3) closing the air pump, taking down the hose connected with the air pump and the breathing joint (2), and taking down the heating equipment (10) and the block (14), thus finishing the secondary forming manufacture of the thin tube body (3).