Endotracheal tube comprising pharyngeal suction catheter

1. An endotracheal tube with a pharyngeal suction catheter, comprising:

a baffle, an endotracheal tube body and a pharyngeal suction catheter, with the pharyngeal suction catheter configured for sucking and removing pharyngeal secretions from a patient, the baffle being sleeved onto one end of the endotracheal tube body, wherein the baffle is located above a balloon of the endotracheal tube body, wherein the endotracheal tube body is formed integrally with the pharyngeal suction catheter, and the pharyngeal suction catheter is connected with an outer wall of the endotracheal tube body and fixed directly behind the endotracheal tube body, the baffle is of a circular ring shape and extends in a direction away from the endotracheal tube body, one end of the pharyngeal suction catheter, which is adjacent to the baffle, is bent arcuately downward and rearward in a direction away from the endotracheal tube body to form a front bent portion, the front bent portion is close to the baffle in a direction from the baffle to the balloon, an end of the front bent portion is closed, and a side wall of the front bent portion is provided with two suction ports,

wherein the baffle is located at a position higher than a balloon of the endotracheal tube body by 3.5 cm, and the front bent portion is perpendicular to the endotracheal tube body, the end of the front bent portion is distanced from the endotracheal tube body by 1.2 cm, and an end of the front bent portion is flush with a level line of the baffle.

2. The endotracheal tube with a pharyngeal suction catheter of claim 1 , wherein the endotracheal tube further comprises a first flushing tube, the first flushing tube is embedded in a front wall of the endotracheal tube body, one end of the first flushing tube is provided with an opening, with the opening toward an outside of the endotracheal tube body and distanced from the baffle by 1.5 cm, the first flushing tube runs along with the endotracheal tube body to go beyond an incisor line, and is separated, after being away from the incisor line by 3.0 cm, from the endotracheal tube body, and the first flushing tube is extended so as to be externally connected with a syringe connector.

3. The endotracheal tube with a pharyngeal suction catheter of claim 1 , wherein one end of the pharyngeal suction catheter is located adjacent to the baffle, the pharyngeal suction catheter runs along with the endotracheal tube body and is separated, at a position lower than an incisor line by 3.5 cm, from the endotracheal tube body, and the pharyngeal suction catheter is extended so as to be externally connected with a hose connector.

4. The endotracheal tube with a pharyngeal suction catheter of claim 2 , wherein the two suction ports are symmetrically distributed along an axial direction of the pharyngeal suction catheter, and both of the suction ports are distanced from the end of the front bent portion by 3 mm.

5. The endotracheal tube with a pharyngeal suction catheter of claim 4 , wherein the endotracheal tube further comprises a second flushing tube, the second flushing tube is embedded in a front wall of the pharyngeal suction catheter connected with the endotracheal tube body, an opening of one end of the second flushing tube is disposed in a catheter cavity and located below and behind the suction ports on both sides, and the opening is close to the port of the pharyngeal suction catheter, the second flushing tube runs along with the pharyngeal suction catheter to go beyond an incisor line and is separated, after being away from the incisor line by 3.0 cm, from the pharyngeal suction catheter, and the second flushing tube is extended so as to be externally connected with a syringe connector.

6. The endotracheal tube with a pharyngeal suction catheter of claim 4 , wherein the endotracheal tube further comprises a humidity sensing device, the humidity sensing device comprises a connecting wire and a humidity sensing electrode, the humidity sensing electrode is disposed at the side wall of the front bent portion and located beside the port of the front bent portion, one end of the connecting wire is electrically connected with the humidity sensing electrode, and the other end of the connecting wire protrudes out of an oral cavity of the patient.

7. The endotracheal tube with a pharyngeal suction catheter of claim 5 , wherein the endotracheal tube further comprises a third flushing tube, the third flushing tube is embedded in a rear tube wall of the pharyngeal suction catheter, one end of the third flushing tube directly faces a top of a hard palate of the patient after successful intubation of the patient, and the one end of the third flushing tube is provided with an opening, with the opening toward outside of the rear tube wall, the third flushing tube runs along with the pharyngeal suction catheter to go beyond an incisor line and is separated, after being away from the incisor line by 3.0 cm, from the pharyngeal suction catheter, and the third flushing tube is extended so as to be externally connected with a syringe connector.

8. The endotracheal tube with a pharyngeal suction catheter of claim 1 , wherein the endotracheal tube further comprises a silicone film formed integrally with the endotracheal tube body and the pharyngeal suction catheter, the silicone film is connected with each of an outer side wall of the pharyngeal suction catheter and an outer side wall of the endotracheal tube body, the silicone film, the outer side wall of the pharyngeal suction catheter and the outer side wall of the endotracheal tube body constitute a gastric tube tunnel through which a gastric tube can pass, the silicone film is located beside the pharyngeal suction catheter and behind the endotracheal tube body, a tunnel cavity of the gastric tube tunnel has a size sufficient such that a conventional gastric tube can pass through, an opening of one end of the gastric tube tunnel is distanced from the baffle by 4.0 cm, and an opening of the other end of the gastric tube tunnel protrudes out of an oral cavity of the patient.

9. The endotracheal tube with a pharyngeal suction catheter of claim 2 , wherein the front bent portion is perpendicular to the endotracheal tube body, the end of the front bent portion is distanced from the endotracheal tube body by 1.2 cm, and an end of the front bent portion is flush with a level line of the baffle.

10. The endotracheal tube with a pharyngeal suction catheter of claim 3 , wherein the front bent portion is perpendicular to the endotracheal tube body, the end of the front bent portion is distanced from the endotracheal tube body by 1.2 cm, and an end of the front bent portion is flush with a level line of the baffle.

11. The endotracheal tube with a pharyngeal suction catheter of claim 1 , wherein the endotracheal tube further comprises a third flushing tube, the third flushing tube is embedded in a rear tube wall of the pharyngeal suction catheter, one end of the third flushing tube directly faces a top of a hard palate of the patient after successful intubation of the patient, and the one end of the third flushing tube is provided with an opening, with the opening toward outside of the rear tube wall, the third flushing tube runs along with the pharyngeal suction catheter to go beyond an incisor line and is separated, after being away from the incisor line by 3.0 cm, from the pharyngeal suction catheter, and the third flushing tube is extended so as to be externally connected with a syringe connector.

12. The endotracheal tube with a pharyngeal suction catheter of claim 2 , wherein the endotracheal tube further comprises a third flushing tube, the third flushing tube is embedded in a rear tube wall of the pharyngeal suction catheter, one end of the third flushing tube directly faces a top of a hard palate of the patient after successful intubation of the patient, and the one end of the third flushing tube is provided with an opening, with the opening toward outside of the rear tube wall, the third flushing tube runs along with the pharyngeal suction catheter to go beyond the incisor line and is separated, after being away from the incisor line by 3.0 cm, from the pharyngeal suction catheter, and the third flushing tube is extended so as to be externally connected with a syringe connector.

13. The endotracheal tube with a pharyngeal suction catheter of claim 3 , wherein the endotracheal tube further comprises a third flushing tube, the third flushing tube is embedded in a rear tube wall of the pharyngeal suction catheter, one end of the third flushing tube directly faces a top of a hard palate of the patient after successful intubation of the patient, and the one end of the third flushing tube is provided with an opening, with the opening toward outside of the rear tube wall, the third flushing tube runs along with the pharyngeal suction catheter to go beyond the incisor line and is separated, after being away from the incisor line by 3.0 cm, from the pharyngeal suction catheter, and the third flushing tube is extended so as to be externally connected with a syringe connector.