CN211410575U

CN211410575U - Trachea cannula capable of measuring air inflation quantity and position of air bag

Info

Publication number: CN211410575U
Application number: CN201922051353.5U
Authority: CN
Inventors: 柳子兴; 江泽锋; 裴璐
Original assignee: Shenzhen Yunmeng Kexun Technology Co ltd
Current assignee: Shenzhen Yunmeng Kexun Technology Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-09-04
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a trachea cannula of measurable gasbag inflation volume and position, including the intubate body with aerify the extension pipe, the front end outer wall of intubate body is provided with inflatable gasbag, aerifys the front end of extension pipe and connects inflatable gasbag, aerifys the rear end of extension pipe and sets up check valve gas injection joint, sets up gas flow sensor on the extension pipe of aerifing of check valve gas injection joint front end. The rear end of the intubation tube body is a connector connected with a breathing machine, and the rear end of the inflatable air bag at the front end of the intubation tube body is provided with an annular magnet. The gas flow sensor is connected with a first signal line, the first signal line is connected with a first quick plug connector, and the first plug connector is connected with a medical instrument. The medical instrument is further connected with a position sensor, the position sensor is connected with a second signal wire, the second signal wire is connected with a second quick plug connector, and the medical instrument is connected through the second quick plug connector. The position sensor is fixed outside the human body and senses and judges the position of the inflatable air bag with the annular magnet.

Description

Trachea cannula capable of measuring air inflation quantity and position of air bag

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a trachea cannula capable of measuring the inflation quantity and position of an air bag.

Background

The existing breathing machine is characterized in that a tracheal tube is inserted into a trachea of a patient, a high-volume low-pressure cuff is arranged at the front end of the tracheal tube, the cuff is inflated to press the trachea wall of the patient in a mode of manual injection by using an injector, so that gas in an airway is prevented from overflowing from the trachea wall and vomit, blood or oral secretion is prevented from flowing into the trachea, and the tail end of the tracheal tube is connected with a Y-shaped interface of the breathing machine, so that the breathing machine supplies gas to the patient through the gas supply tube, and the patient can perform passive breathing gas action.

Clinical research results show that when the air bag pressure exceeds 25cm H2O (1 cmH2O =0.098 KPa), the blood flow of mucous membrane capillary blood vessels begins to decrease, when the air bag pressure exceeds 35cmH2O, the blood flow is completely blocked, the tracheal mucosa is pressed for a certain time, the tracheal mucosa is ischemic and even necrotic, tracheoesophageal fistula can occur when the trachea mucosa is serious, conversely, if the air bag is not inflated enough, air leakage, aspiration and the like are caused, and domestic and foreign investigation results show that most anaesthetists and emergency medical doctors still adopt the experience of a finger touch method (specifically, the soft and hard degree judgment between a pinching extension tube and a one-way inflation valve) to judge whether the air bag is inflated enough, which often causes over inflation, and the air flow of the air bag even reaches 50cmH2O, the physical health and life safety of the patient are endangered, even the most experienced doctors do not make the exception, so that the finger-touch inflation which is determined to be inflated according to experience is not suitable. On the other hand, whether the inserting position of the tracheal intubation is correct is judged, the conventional method is that a doctor uses a breathing air bag to ventilate the trachea, and auscultates the sound of lung respiration to judge whether the intubation is in place, if the tail end position of the trachea is too low, two lungs cannot obtain the same amount of air, under certain conditions, X-ray examination can be immediately carried out after intubation, the position of the intubation is correct, the intubation is troublesome, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems and providing the trachea cannula which has the advantages of quick and accurate response, small error and convenient operation and can measure the air flow and the position of the air bag.

The utility model adopts the technical proposal that: the utility model provides a trachea cannula of measurable gasbag inflation volume and position, includes the cannula body and inflates the extension pipe, and the front end outer wall of cannula body is provided with inflatable gasbag, inflates the front end of extension pipe and connects inflatable gasbag, and the rear end of inflating the extension pipe sets up the check valve gas injection and connects, sets up the gas flow sensor on the extension pipe of inflating of check valve gas injection joint front end. The rear end of the intubation tube body is a connector connected with a breathing machine, and the rear end of the inflatable air bag at the front end of the intubation tube body is provided with an annular magnet. The gas flow sensor is connected with a first signal line, the first signal line is connected with a first quick plug connector, and the first plug connector is connected with a medical instrument. The medical instrument is further connected with a position sensor, the position sensor is connected with a second signal wire, the second signal wire is connected with a second quick plug connector, and the medical instrument is connected through the second quick plug connector. The position sensor is fixed outside the human body and senses and judges the position of the inflatable air bag with the annular magnet.

Further the gas flow sensor adopts a linear magnetic resistance principle sensor, consists of a magnet, a spring, a magnetic resistance sensor, a circuit board and a shell, and is communicated with the cavity of the inflatable extension pipe.

Further the gas flow sensor can also adopt an air pressure sensor which is communicated with the cavity of the inflatable extension tube.

Furthermore, the position sensor adopts a magnetic resistance principle sensor, and a shell of the magnetic resistance principle sensor is fixed on the surface of a human body by adopting skin color elastic cloth and medical glue.

Furthermore, the intubation tube body is made of a PVC material without DEHP, and the inflatable air sac is a TPU air sac with biocompatibility.

Further the medical instrument is integrated with a display screen, a master control circuit board, an LED indicator light, a buzzer and a power supply pack.

Compared with the prior art, the utility model beneficial effect does: the trachea cannula improved by the technical scheme mainly detects the air pressure of the inflatable air bag by arranging the air flow sensor on the inflation extension tube connected with the inflatable air bag, simply and quickly inflates the inflatable air bag by proper air flow, and avoids adverse effects caused by excessive air flow of the air bag pressing tracheal mucosa of a human body, blocking blood flow and the like. On the other hand, the tube body at the rear end of the inflatable air bag is sleeved with an annular magnet, and a position sensor which is stuck and bent on the skin surface of the trachea of the human body is arranged, so that the position of the annular magnet is detected, and whether the tracheal cannula is inserted into the accurate position is judged. The scheme can quickly and accurately observe the change of the inflatable air bag in real time and the displacement state of the inflatable air bag inserted into the human body, and overcomes the defect that the common trachea cannula cannot monitor the pressure of the airway of the human body. The trachea cannula is designed to be disposable, and the risk of cross use and accidental infection is effectively avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic block diagram of the structure of the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments.

Referring to the attached fig. 1-2, a trachea cannula capable of measuring the inflation amount and position of an air bag comprises a cannula tube body 2 and an inflation extension tube 3, wherein an inflatable air bag 21 is arranged on the outer wall of the front end of the cannula tube body 2, the front end of the inflation extension tube 3 is connected with the inflatable air bag 21, a check valve air injection joint 5 is arranged at the rear end of the inflation extension tube 3, and a gas flow sensor 4 is arranged on the inflation extension tube at the front end of the check valve air injection joint 5. The rear end of the intubation tube body 2 is a connector 22 connected with a breathing machine, and the rear end of an inflatable air bag 21 at the front end of the intubation tube body 2 is provided with an annular magnet 6. The airflow sensor 4 is connected with a first signal wire 11, the first signal wire 11 is connected with a first quick plug connector 12, and the first plug connector 12 is connected with a medical instrument 1; the medical instrument 1 is also connected with a position sensor 7, the position sensor 7 is connected with a second signal wire 13, the second signal wire 13 is connected with a second quick plug connector 14, and the medical instrument 1 is connected through the second quick plug connector 14. The position sensor 7 is fixed outside the human body and senses the position of the inflatable air bag 21 with the annular magnet 6.

As one of the preferred schemes, the gas flow sensor 4 adopts a linear magnetic resistance principle sensor, consists of a magnet, a spring, a magnetic resistance sensor, a circuit board and a shell, and is communicated with the tube cavity of the inflatable extension tube 3.

As another preferable scheme, the air flow sensor 4 may also adopt an air pressure sensor, and the air pressure sensor is communicated with the lumen of the inflation extension tube 3.

Preferably, the position sensor 7 adopts a magnetic resistance principle sensor, and a shell of the magnetic resistance principle sensor is fixed on the surface of a human body by adopting skin color elastic cloth and medical glue.

Preferably, the cannula body 2 is made of DEHP-free PVC material, and the inflatable balloon 21 is a biocompatible TPU balloon.

Preferably, the medical instrument 1 is integrated with a display screen, a main control circuit board, an LED indicator light, a buzzer and a power supply set. Of course, the integrated functions of the medical meter 1 can be adjusted according to actual needs, and is not limited to the limitations described in the present technical solution.

When the trachea cannula is specifically implemented, the trachea cannula is inserted according to the clinical routine operation flow, the medical instrument 1 is directly connected with the first quick plug connector 12, then the air is injected into the inflatable air bag 21 through the one-way valve air injection connector 5, the change of the inflation quantity in the inflatable air bag 21 can be observed through the medical instrument at any time, over inflation is prevented, the change of the air flow in the inflatable air bag 21 can be observed at any time in the whole using process, and the clinical requirement is met. Meanwhile, after the trachea cannula is inserted into the throat of a human body, the medical instrument 1 is directly connected with the second quick plug connector 14, then the position sensor 7 is moved outside the human body to the position above the annular magnet 6 on the cannula tube body 2, the position of the annular magnet 6 can be detected, then the position sensor 7 is fixed on the human body through the viscose glue on the position sensor, and whether the inflatable air bag 21 slides up and down can be judged by detecting the position of the annular magnet 6 at any time.

Clinical experiments show that the trachea cannula provided by the technical scheme has the following advantages: this pressure measurement trachea cannula response rate is fast, the error is little, it is anti-jamming, safe low damage, can be fast accurate real-time observe the change of inflatable gasbag 21 inflation volume and the displacement state after inflatable gasbag 21 inserts the human body, the restriction of the convenient operation of doctorsing and nurses of integrated design and cable is disturbed, provide safe accurate data, for clinical treatment provides important medical science judgement information, the method of scientific treatment has been improved, the emergence of medical risk accident has been reduced, effectively avoid the risk of cross use accidental infection, the defect of the unable real-time supervision human airway pressure of ordinary trachea cannula has been overcome, clinical medicine's needs to safe airway management have been satisfied.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a trachea cannula of measurable gasbag inflation volume and position, includes intubate body (2) and aerifys extension pipe (3), its characterized in that: an inflatable air bag (21) is arranged on the outer wall of the front end of the cannula tube body (2), the front end of the inflatable extension tube (3) is connected with the inflatable air bag (21), a one-way valve air injection joint (5) is arranged at the rear end of the inflatable extension tube (3), and a gas flow sensor (4) is arranged on the inflatable extension tube at the front end of the one-way valve air injection joint (5); the rear end of the intubation tube body (2) is provided with a connector (22) connected with a breathing machine, and the rear end of an inflatable air bag (21) at the front end of the intubation tube body (2) is provided with an annular magnet (6); the air flow sensor (4) is connected with a first signal wire (11), the first signal wire (11) is connected with a first quick plug connector (12), and the first plug connector (12) is connected with a medical instrument (1); the medical instrument (1) is also connected with a position sensor (7), the position sensor (7) is connected with a second signal wire (13), the second signal wire (13) is connected with a second quick plug connector (14), and the medical instrument (1) is connected through the second quick plug connector (14); the position sensor (7) is fixed outside the human body and senses and judges the position of the inflatable air bag (21) with the annular magnet (6).

2. The endotracheal tube capable of measuring the inflation amount and the inflation position of the air sac according to claim 1, characterized in that: the air flow sensor (4) adopts a linear magnetic resistance principle sensor, consists of a magnet, a spring, a magnetic resistance sensor, a circuit board and a shell, and is communicated with the tube cavity of the inflatable extension tube (3).

3. The endotracheal tube capable of measuring the inflation amount and the inflation position of the air sac according to claim 1, characterized in that: the air flow sensor (4) can also adopt an air pressure sensor which is communicated with the tube cavity of the inflatable extension tube (3).

4. The endotracheal tube capable of measuring the inflation amount and the inflation position of the air sac according to claim 1, characterized in that: the position sensor (7) adopts a magnetic resistance principle sensor, and a shell of the magnetic resistance principle sensor is fixed on the surface of a human body by adopting skin color elastic cloth and medical glue.

5. The endotracheal tube capable of measuring the inflation amount and the inflation position of the air sac according to claim 1, characterized in that: the intubation tube body (2) is made of a DEHP-free PVC material, and the inflatable air sac (21) is a TPU air sac with biocompatibility.

6. The endotracheal tube capable of measuring the inflation amount and the inflation position of the air sac according to claim 1, characterized in that: the medical instrument (1) is integrated with a display screen, a master control circuit board, an LED indicator light, a buzzer and a power supply set.