Oxygen supply tube device for insertion into air tube

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to an improvement of an oxygen supply tube device inserted into the trachea.

【0002】

[Conventional technology]

When performing surgery in the operating room, the patient is given general anesthesia, but during general anesthesia, it is necessary to insert an oxygen supply tube into the trachea. Conventionally known oxygen supply tubes to be inserted into the trachea will be described with reference to FIGS. 8 and 9. An air bag 11 and a connector 12 for supplying and exhausting air to the air bag are attached to the air supply pipe 10. At the time of insertion, the air bag 11 is filled with air through the connector 12 in order to facilitate the insertion of the air supply tube 10 from the patient's throat into the trachea 70. After the insufflation tube 10 is inserted into the trachea 70, the air in the air bag 11 is evacuated from the connector 12, the air bag 11 is brought into a contracted state (omitted in the figure), and the insufflation tube 10 is placed in a fixed position in the trachea of the patient. To hold on. A connector 14 is attached to the outer end of the air supply tube 10, and a hand-pushed oxygen bag 16 and a carbon dioxide analyzer 17 provided in the operating room are connected to the connector 14. In this way, by supplying oxygen into the patient's lungs through the insufflation tube 10, oxygen necessary for the patient's life support is secured.

【0003】

However, the opening of the trachea of the human body and the opening of the esophagus are extremely adjacent to each other, and it is very difficult to distinguish between them from the outside. As a result, oxygen supply tube operators often mistakenly insert the air supply tube into the esophagus, often unaware of it, causing the patient to become choked and stop heartbeat. In some cases, the patient died due to damage to the nervous system, and it was not uncommon for the patient to develop into a medical malpractice dispute.

【0004】

If the trachea is accidentally inserted into the esophagus in this way, it poses a serious risk to life and may cause sequelae. Therefore, a carbon dioxide analyzer is usually installed in the operating room and the lungs of the patient. By monitoring the carbon dioxide concentration inside, it is judged whether or not the air supply tube is properly inserted into the trachea. However, this carbon dioxide analyzer is very expensive to install, and therefore it is also difficult to permanently install it in, for example, a normal first aid room, a critically ill patient room, or an emergency facility outside a hospital, other than the operating room. .. Therefore, in general first aid rooms, critically ill patient rooms, emergency facilities outside hospitals, etc., an auxiliary method by breathing the patient is adopted. In this case, the air supply tube is first inserted into the trachea of the patient, and the hand-pushed oxygen bag connected to the air supply tube is repeatedly pushed to promote the respiratory movement of the patient. However, in an emergency situation where the patient is unable to breathe spontaneously, unfamiliarity with the operator can have fatal consequences.

【0005】

Also, in situations where the patient cannot be anesthetized, trying to insert the trachea into the back of the patient's throat will reflexively open the trachea when the nerves in the throat touch a foreign body. Since it closes to the air, it becomes very difficult for the operator to insert the air supply tube, and the risk increases.

【0006】

[Problems to be Solved by the Invention]

Based on many years of experience as a clinical medical worker, the present inventor has made the operation of inserting the insufflation tube into the trachea simpler and easier than the present, and has determined the suitability of the position of the insufflation tube in the trachea. By eliminating the difficulty, the purpose is to provide an oxygen supply pipe device that can be used without danger even in first aid rooms, critically ill patient rooms, or emergency facilities outside hospitals where it is difficult to equip a carbon dioxide analyzer. As a result of repeated diligent research, the present invention was completed.

【0007】

[Means for solving problems]

The above purpose is in an oxygen supply tube device equipped with an air supply tube that is inserted into the trachea of the human body for oxygen supply and a device that supplies oxygen into the air supply tube; the side of the air supply tube that is inserted into the trachea. A position transmitter provided at the tip of the body, a position detector that detects the position of the position transmitter from outside the body, and a notification that operates in response to the output of the position detector to notify the suitability of the position of the position transmitter inside the body. Achievable by an oxygen supply tube device, characterized in that it comprises a device. [0008]

Furthermore, the above purpose is in an oxygen supply tube device equipped with an air supply tube that is inserted into the trachea of the human body for oxygen supply and a device that supplies oxygen into the air supply tube; a position transmitter at the tip. The sonde that is attached and inserted into the air supply tube, the position detector that detects the position of the position transmitter from outside the body, and the position detector that operates in response to the output of the position detector, and the position of the position transmitter inside the body is appropriate or not. It can also be achieved by an oxygen supply pipe device, which comprises a notification device for notifying.

【0009】

The position transmitter is configured to be composed of a magnetic piece and the position detector is configured to be composed of a magnetic detector, the position transmitter is configured to be composed of an electromagnetic wave transmitter, and the position detector is configured to be composed of an electromagnetic wave receiver. Alternatively, the position transmitter is configured to consist of a light emitter and the position detector is composed of an optical detector, or the position transmitter is composed of an induction coil and the position detector is electromagnetically coupled to the induction coil. It can be configured to include a provided induction coil.

【0010】

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be specifically described with reference to the drawings. First, it will be described with reference to FIGS. 1 to 4. The oxygen supply pipe device according to the present invention basically includes an air supply pipe 10, a position transmitter 20, a position detector 30, and a notification device 40. The air supply tube 10 is provided with an air bag 11 and an air supply / exhaust connector 12 to the air bag 11, and by filling the air bag 11 with air through the connector 12, the tip of the air supply tube 10 is inserted into the trachea from the patient's throat. The work of inserting into can be performed smoothly. A position transmitter 20 made of, for example, a magnetic piece is embedded in the tube wall near the tip of the air supply tube 10. The magnetic field lines emitted from the position transmitter 20 are detected by the position detector 30 including an IC circuit or the like provided with a magnetic detection element. As shown in FIGS. 2 and 4, the position detector 30 is attached to the outside of the patient's throat, and when the insufflation tube 10 is inserted into the back of the patient's throat, the magnetic field lines emitted from the position transmitter 20. It is possible to know whether or not the air supply tube 10 is inserted at an appropriate position in the trachea by detecting the strength and the like by the notification device 40 described later. If the insufflation tube 10 is inserted in place in the patient's trachea, by connecting a hand-held oxygen bag or carbon dioxide analyzer to the insufflation tube 10 and pumping oxygen into the patient's lungs. , The patient's normal respiratory function can be maintained.

【0011】

Next, the circuit configuration of the notification device 40 that notifies the suitability of the position of the position transmitter 30 in the body based on the output signal of the position detector 30 will be described with reference to FIG. 7. A lamp 41 and an alarm 42 are attached to the notification device 40. Since the change in the output signal of the position detector 30 is extremely weak (0.5 to 1.0 mV), the output signal is appropriately amplified and then the unnecessary noise signal is removed by the filter 31. After that, the comparator 32 compares the strength with the reference signal output from the reference signal generator 33, and based on the discrimination signal, the arithmetic amplifier circuit 34 determines the suitability of the position of the position transmitter 30 in the body. Activate the lamp 41, alarm 42, meter 43, etc.

【0012】

That is, in the case of a normal adult, the trachea is about 25 mm inside from the skin of the throat part, so when the trachea 10 is inserted into the patient's throat and the tip approaches the position detector 30, the position is detected. The meter 43 displays the distance between the two based on the output of the device 30, and when the tip of the air supply tube 10 enters the opening of the trachea and reaches an appropriate position, the lamp 41 is turned on based on the discrimination signal of the comparer 32. At the same time, the alarm 42 is activated to notify that the air supply tube has reached the proper position in the trachea. On the other hand, if the tip of the insufflation tube 10 accidentally enters the esophagus, the lamp 41 does not light up and the alarm 42 does not sound, so that the operator can easily determine the position of the insufflation tube 10 in the patient's body. Can be judged. Alternatively, one of the two lamps 41 shown in FIG. 1 is red, the other is blue, and when the tip of the air supply tube 10 reaches an appropriate position, the blue lamp is turned on, otherwise red. It is also possible to keep the lamp lit and to sound the alarm 42.

【0013】

Since the notification device 40 can be compactly configured and can be taken out of the hospital, it can be easily used at the treatment site. Further, if the notification device 40 is provided with a storage battery, it can be used repeatedly by charging, and can usually be used 100 times or more by one charge. In addition, by configuring the external power supply (+ 12V) to be available, it can be used anywhere.

【0014】

In the above embodiment, a magnetic piece is used as the position transmitter 20 and a magnetic detector is used as the position detector 30, but in addition to these, for example, an electromagnetic wave transmitter is used as the position transmitter and the position detector is used. An electromagnetic wave receiver is used, a light emitter is used as a position transmitter, an optical detector is used as a position detector, or an induction coil is used as a position transmitter, and the induction coil and the electromagnetic wave are used as a position detector. It is also possible to use one provided with an induction coil coupled to.

【0015】

Next, another embodiment of the oxygen supply pipe device according to the present invention will be described with reference to FIGS. 5 and 6. The oxygen supply pipe device in this embodiment basically includes an air supply pipe 10, a position transmitter 20, a sonde 21, a position detector 30, and a notification device 40. The sonde 21 is made of a flexible rod of an appropriate length, and a position transmitter 20 made of, for example, a magnetic piece is attached near the tip thereof. The outer surfaces of the sonde 21 and the position transmitter 20 are entirely coated with a resin film or the like (omitted in the figure), and the position transmitter 20 is configured to be sufficiently safe so as not to fall off. The sonde 21 is inserted into the air supply tube 10, and the position detector 30 attached to the outside of the throat detects the magnetic field lines emitted from the position transmitter 20. Thereby, as in the case of the above-described embodiment, it is possible to easily determine whether or not the insufflation tube 10 inserted into the patient's body has reached an appropriate position in the trachea 70.

【0016】

After confirming that the insufflation tube 10 has been inserted in the proper position in the trachea 70, the sonde 21 is removed from the insufflation tube 10 and respiratory assistance is provided at the outer end of the insufflation tube 10 as in the case of the above embodiment. Connect a vessel or a hand-held oxygen bag to supply oxygen to the patient's lungs and ensure their breathing.

【0017】

It should be noted that the present invention is not limited to the above embodiments, but includes all modified embodiments that can be easily conceived by those skilled in the art from the above description within the scope of the object.

【0018】

[Effect of the invention]

Since the present invention is configured as described above, when the oxygen supply pipe device according to the present invention is used, the position of the position transmitter 20 attached to the air supply pipe 10 or inserted into the air supply pipe 10 is set outside the patient's body. By detecting with the position detector 30 provided in the patient, it can be easily determined whether or not the air supply tube is inserted at an appropriate position in the trachea of the patient. Therefore, the expensive carbon dioxide analyzer required for conventional oxygen supply pipes is not required, and therefore, not only in the first aid room and the critically ill patient room where it is difficult to equip the carbon dioxide analyzer, but also outside the hospital. Since it can be safely used in emergency facilities and is portable, it can be used at any treatment site. Further, by detecting the position of the position transmitter with the position detector, the operator can surely determine whether or not the air supply tube is properly inserted into the patient's trachea, so that the air supply tube is located in the esophagus. It is possible to provide a highly safe oxygen supply pipe device that can avoid a situation in which the patient is inserted to the side and has a serious impact on the patient's life.

[Simple explanation of drawings]

[Figure 1]

It is a perspective view which shows the whole structure of one Example of the oxygen supply pipe apparatus which concerns on this invention.

[Figure 2]

It is explanatory drawing which shows the state which inserted the air supply tube of the oxygen supply tube device shown in FIG. 1 into the trachea of a patient.

[Fig. 3]

It is sectional drawing of the tip part of the air supply pipe of the oxygen supply pipe apparatus shown in FIG.

[Fig. 4]

It is explanatory drawing which shows the state which attached the position detector of the oxygen supply tube device shown in FIG. 1 to the outside of a patient's throat.

[Fig. 5]

It is a perspective view which shows the air supply pipe and the sonde in another embodiment of the oxygen supply pipe apparatus which concerns on this invention.

[Fig. 6]

It is explanatory drawing which shows the state which inserted the trachea shown in FIG. 5 into the trachea of a patient, and inserted the sonde into the trachea.

[Fig. 7]

It is a block diagram which shows an Example of the circuit structure of the notification device of the oxygen supply pipe device which concerns on this invention.

[Fig. 8]

It is a perspective view which shows the structure of the oxygen supply pipe known conventionally.

[Fig. 9]

It is explanatory drawing which shows the use state of the conventionally known oxygen supply pipe shown in FIG.

[Explanation of symbols]

10 Insufflation tube 11 Air bag 12 Connector for air supply and exhaust to the air bag 14 connector 16 oxygen bag 17 Carbon dioxide analyzer 20 position transmitter 21 Sonde 30 position detector 31 filter 32 Comparator 33 Reference signal generator 34 Arithmetic amplifier circuit 40 Notification device 41 lamp 42 alarm 43 meters 70 trachea 80 esophagus