JPS63246176A - Respiration circuit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION BACKGROUND OF THE INVENTION (Field of the Invention) The present invention relates to a breathing circuit using a self-contained breathing circuit conduit with low elongation and high flexibility.

(Prior art and its problems) A breathing circuit is used to connect a patient and a respirator or an anesthesia machine, but the breathing circuit has kinking.
Bellows tubes are mainly used to prevent blockages due to tube soaking and to emphasize flexibility. Various types of bellows tubes have been known in the past, and the following are typical examples.

(1) The first type is one in which a large number of independent waveforms are formed, or one in which a continuous spiral waveform is formed.

This type is highly flexible and light, but stretches easily.
Compliance is great.

(2) The second type is one in which a solid small pipe with a semicircular cross section is wound around the outer peripheral wall of a straight pipe. This type does not stretch and has low compliance, but
It becomes heavier and has slightly less flexibility.

(3) The third type is the first type with expansion and contraction control means added.

This type is difficult to stretch, has low compliance, is lightweight, and highly flexible.

However, even if the various types mentioned above or other types of bellows tubes are used in the breathing circuit, separate nebulizer actuation tubes, exhalation valve actuation tubes, pressure or temperature monitor tubes, etc. are required, and these tubes are Since the breathing circuit is attached to the breathing circuit, the breathing circuit as a whole becomes complicated and difficult to handle. Furthermore, if the entire breathing circuit is made light and flexible, there is a problem in that compliance inevitably increases. In addition, the bellows pipe had difficulty in draining condensed water.

■! OBJECTS OF THE INVENTION Accordingly, it is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and to provide a simple and easy-to-handle system that does not require separate nebulizer actuation tubes, exhalation valve actuation tubes, and pressure or temperature monitor line tubes. The present invention aims to provide a breathing circuit using a breathing circuit conduit that is lightweight and has reduced compliance without impairing flexibility.

Hl Specific Structure of the Invention According to the first aspect of the present invention, the system comprises an expiratory pipe, an inspiratory pipe, and an air supply/exhaust port to which these expiratory pipes and inspiratory pipes are connected; At least one of the conduits is composed of a main pipe section and at least one sub-pipe section integrally formed with the main pipe section in a continuous spiral along the outer peripheral wall of the main pipe section. A breathing circuit is provided.

It is preferable that a connecting means for a pressure or temperature monitoring mechanism be inserted into the auxiliary pipe section.

Further, the exhalation pipe and the intake pipe can be connected to a Y-shaped supply/exhaust port.

Furthermore, an inner tube is arranged coaxially within the conduit to constitute a double tube, and the inside of the inner tube and between the conduit and the inner tube are either an expiratory tube or an inhalation tube, and the conduit and the inner tube are connected to the inner tube. It is preferable to connect it to an air supply/exhaust port.

According to a second aspect of the invention, an expiratory tube, an inspiratory tube, an exhalation valve connected to the expiratory tube and/or a nebulizer connected to the inspiratory tube, and a nebulizer connected to the expiratory tube and the inspiratory tube. a main pipe section, and at least one helical pipe integrally formed with the main pipe section and continuous along the outer circumferential wall of the main pipe section. A breathing circuit is provided, characterized in that it is constructed of a conduit having an auxiliary pipe section.

The auxiliary pipe portion can be used as a pipe for driving the nebulizer and/or the exhalation valve.

It may also be configured such that a connection means for a pressure or temperature monitoring mechanism can be inserted into the sub-pipe section.

The exhalation pipe and the intake pipe can be connected to a Y-shaped air supply and exhaust port.

Further, an inner tube is arranged coaxially within the conduit to form a double tube, and the inside of the inner tube and between the conduit and the inner tube are either an exhalation tube or an inhalation tube, and the conduit and the inner tube are connected to the supply tube. Preferably, the conduit and the inner tube are connected to the nebulizer and the exhalation valve, respectively, and the nebulizer and the exhalation valve are connected to the second and third sub-pipe parts, respectively.

Further, an inner tube is arranged coaxially within the conduit to form a double tube, and the inside of the inner tube and between the conduit and the inner tube are either an expiratory tube or an inhalation tube, and one end of the conduit and the inner tube is It is also preferable that the exhalation pipe and the exhalation valve are connected to the supply/exhaust port, and the exhalation pipe and the nebulizer are connected to each other in the middle of the double pipe.

The breathing circuit according to the invention will now be described in detail with reference to preferred embodiments shown in the accompanying drawings.

First, the breathing circuit conduit used in the breathing circuit will be explained with reference to FIGS. 1 to 4.

The conduit used in the breathing circuit of the present invention includes a main pipe section having at least one air passage, and at least one spiral pipe integrally formed with the main pipe section and continuous along the outer peripheral wall of the main pipe section. A conduit for a breathing circuit comprising an auxiliary pipe section, some preferred embodiments of which are described below.

In the case shown in Fig. 1, the main pipe section is a straight pipe 1, and the auxiliary pipe section has a small pipe 2 having an approximately semicircular cross section on the outer peripheral wall of the straight pipe 1.
It is wound spirally in the longitudinal direction. In this example, expiratory gas or inspiratory gas is passed through the lumen 3 of the straight tube 1, and nebulizer operating gas or exhalation valve operating gas is passed through the lumen 4 of the small tube 2.

The main pipe shown in FIG. 2 is a bellows pipe 6 in which the bellows crest 5 continues in a spiral shape, and the inner wall of a flexible straight pipe 7 is fixed along the ridge 5 of the bellows pipe 6. A space 8 between the bellows pipe 6 and the straight pipe 7 is used as an auxiliary pipe part. In this example, expiratory gas or inspiratory gas can be passed through the lumen 9 of the bellows tube 6, and nebulizer operating gas or exhalation valve operating gas can be passed through the passage 8 formed by the accordion tube 6 and the straight tube 7.

The one shown in FIG. 3 is the same as the one shown in FIG. 1 in which a straight pipe 10 is further fixed to the outside.

That is, the main pipe portion is formed by winding the small pipe 2 of the straight pipe 1 in a spiral shape in the longitudinal direction of the straight pipe 1, and further fixing another straight pipe 10 onto the small pipe 1. In this example, exhaled gas or inspiratory gas is passed through the lumen 3 of the straight pipe 1, and between the lumen 4 of the small tube 2 (first sub-pipe part) and between the straight pipe 1, the small pipe 2, and the other straight pipe 10. Nebulizer working gas or exhalation valve working gas can flow through the passageway (second sub-pipe section) 11 that is formed.

The device shown in FIG. 4 is the same as that shown in FIG. 2 except that a small tube having a semicircular cross section as shown in FIG. 1 is wound around the outside.

That is, the main pipe part is a bellows pipe 6 in which the bellows ridges 5 are continuous in a spiral shape, and the inner wall of a flexible straight pipe 7 is fixed along the ridges 5 of the bellows pipe 6 to connect the bellows pipe 6 and the straight pipe. A space 8 between the straight pipe 7 and the pipe 7 is used as a first sub-pipe part, and a small pipe 12 having a substantially semicircular cross section is wound and fixed on the straight pipe 7 to form one of the small pipes 12.
113 is a second sub-pipe section. In this example,
Expiratory gas or inhaled gas is passed through the lumen 9 of the straight pipe 6, and the first
Nebulizer working gas or exhalation valve working gas can flow through the second sub-pipe parts 8 and 13.

In the main pipe section shown in FIG. 5, an inner pipe 14 is disposed coaxially within the straight pipe 1, and a small pipe 2 having an approximately semicircular cross section is disposed on the straight pipe 1.
is wound and fixed in the longitudinal direction of the straight pipe 1. In this example, the passage 15 between the straight pipe 1 and the inner pipe 14 and the inner pipe 1
The lumen 16 of 4 is used as a passage for expiratory or inhaled gas, and the small tube 2
The lumen 4 is used as a passage for nebulizer or exhalation valve operating gas.

As mentioned above, the conduit used in the breathing circuit of the present invention includes at least one main pipe section and at least one sub-pipe section, and its configuration is not limited to that shown in the drawings, but It is preferable that the cross-sectional area of the sub-pipe portion is 10 to 50 mm'. Generally, the amount of ventilation by a resurvirator is 300 to 700 mJ! If the cross section of the nebulizer or exhalation valve operating gas in the breathing circuit used in this system is less than 10 mm, the flow path tends to become long and difficult to flow, and if it exceeds 50 mm, the main pipe This is because it adversely affects the anti-kinking properties and flexibility of the main pipe part, and if the main pipe part is also made larger, the whole becomes larger and becomes less compact.

Next, the breathing circuit will be explained.

A conventional breathing circuit is shown in FIG. The breathing circuit is exhalation pipe 2
0. An exhalation valve 21, an exhalation valve operation tube 22, an intake tube 23, a nebulizer 24, a nebulizer operation tube 25, and a Y-shaped piece 26 to which one end of the expiration and intake tubes are connected, which are inserted in the middle of the expiration tube. The other ends of the expiratory tube 20 and the inspiratory tube 23, the exhalation valve 22 and the nebulizer operating tube 25 are connected to a resurvirator (not shown), and the inlet and exhaust ports are connected to the patient. The tube is connected to an endotracheal tube (not shown) or the like. In the conventional breathing circuit, as is clear from Fig. 6, the bellows tubes mentioned at the beginning of the specification are used as the expiratory and inspiratory pipes, and the exhalation valve and nebulizer operating tube are connected to the expiratory and inspiratory pipes. uses separate tubes. As mentioned above, this has caused various problems. In order to solve these problems, in the breathing circuit of the present invention, breathing circuit conduits of various novel configurations as described above are used in place of the conventional conduits. Here, an example will be described in which a conduit having the configuration shown in FIGS. 1 and 5 is applied to a breathing circuit, but the present invention is not limited to these examples, and various modifications may be made within the scope of the present invention. Of course, it is possible to add

In the example shown in FIG. 7, the conduit having the configuration shown in FIG. 1 is applied to the breathing circuit of the present invention.

The exhalation pipe 20 and the inhalation pipe 23 are conduits formed by winding a small tube 2 around a straight pipe 1. One end of the exhalation pipe 20 and the intake pipe 23 are connected to a Y-shaped supply/exhaust port 26, and the other end is connected to a respirator (not shown). An exhalation valve 21 and a nebulizer 24 are inserted in the middle of the expiratory pipe 20 and the inspiratory pipe 23, respectively, and in order to control their operation, one of the small tubes 2 on the expiratory pipe 20 and the inspiratory pipe 23 is used for connection. The other is connected to the respirator via tubes 27 and 28, and the exhalation valve 21 and nebulizer 24 via connecting tubes 29 and 30, respectively. This eliminates the need to use separate tubes 22 and 25 as shown in FIG. 6, making the structure simple and easy to handle.

In the example shown in FIG. 8, the conduit having the configuration shown in FIGS. 1 and 5 is applied to the breathing circuit of the present invention. In this breathing circuit, a conduit having the configuration shown in FIG. 1 is used from the respirator (not shown) to the exhalation valve 21 and nebulizer 24, and a conduit from the exhalation valve 21 and nebulizer 24 to the supply/exhaust port (not shown) is used. A double conduit with the configuration shown in Figure 5 is used. Then, the expiratory pipe 20 and the inspiratory pipe 2
The small tube 2 on the straight tube 1 of No. 3 is connected at one end to a respirator and at the other end to an exhalation valve 21 and a nebulizer 24 via connection tubes 29 and 30, respectively, so that the operation of these can be controlled. Further, the aforementioned double conduit 31 is used as an exhalation pipe and an inhalation pipe, and the passage 15 between the straight pipe 1 and the inner pipe 14 is connected on one side to the exhalation valve 21 and used as an exhalation pipe, One end of the lumen 16 of the inner tube 14 is connected to the nebulizer 24 and used as an intake pipe, and the other ends of the passages 15 and 16 are connected to the supply/exhaust port 32. Similar to the one shown in FIG. 7, there is no need to use separate tubes 22 and 25 as in the past, and the structure is simple and easy to handle.

The above-mentioned auxiliary pipe section can also be configured to allow connection means (not shown) for temperature or pressure monitoring to be inserted therein. Note that since the control operation of the breathing circuit does not constitute the gist of the present invention, a description thereof will be omitted.

■ Specific effects of the invention As is clear from the above, the breathing circuit of the present invention:
It offers many advantages over conventional ones, as described below.

(1) The breathing circuit conduit used in the breathing circuit of the present invention has a structure in which a main pipe section having at least one air passage and at least one sub-pipe section are integrated, and the sub-pipe section is Breathing circuits using it are extremely safe because they can simultaneously perform many functions that cannot be achieved with conventional ones: prevention of kinking, prevention of conduit stretching, and flexibility.

(2) The breathing circuit of the present invention can be provided with at least one auxiliary pipe section of the conduit used, and in the breathing circuit of the present invention, this can be used for operating the exhalation valve and/or the nebulizer. It is safe because it has a simple structure and is easy to handle, without any difficulties in handling due to the separate tube arrangement.

(3) In the breathing circuit of the present invention, when a straight pipe is used as the main pipe part of the conduit, the difficulty of draining the condensed water of the water vapor of the breathing gas component, as in the bellows pipe in the conventional breathing circuit, is solved. Ru.

(4) In the breathing circuit of the present invention, when the main pipe part of the conduit is a double pipe, the structure of the breathing circuit becomes simpler,
If the main pipe section is made of a straight pipe, the effect described in (3) can also be obtained.

(5) In the breathing circuit of the present invention, the connection means for temperature or pressure monitoring can be easily installed in the secondary pipe section of the conduit, facilitating the simplification of the breathing circuit.

[Brief explanation of drawings]

1, 2, 3, 4, and 5 are longitudinal sectional views showing various preferred configurations of breathing circuit conduits used in the breathing circuit of the present invention. FIG. 6 is a diagram of a conventional breathing circuit. 7 and 8 are a plan view and a partial vertical sectional view, respectively, of a breathing circuit to which the conduits shown in FIGS. 1 and 5 are typically applied. Explanation of symbols 1.7.10... Straight pipe, 2.12... Small pipe, 3.9, 15.16... Main pipe section passage, 4.8, 11.
13... Sub-pipe section passage, 5... Mountain part, 6... Bellows tube, 14... Inner tube, 20... Exhalation pipe, 21... Exhalation valve, 22... Exhalation valve Operating tube, 23... Intake pipe, 24... Nebulizer, 25... Nebulizer operating tube, 2...Y
Shape supply/exhaust port, 27.28, 29.30... Connection tube, 31.
...Double pipe, 32...Air supply/exhaust port Patent applicant Teru Sen Co., Ltd. Representative
Person Patent Attorney Minoru WatanabeFIG, 2

Claims (10)

[Claims] (1) An expiratory pipe, an inspiratory pipe, and an air supply/exhaust port to which these expiratory pipes and inspiratory pipes are connected; 1. A breathing circuit comprising a conduit having at least one sub-pipe section formed in a continuous spiral shape along the outer circumferential wall of a main pipe section. (2) The breathing circuit according to claim 1, wherein the breathing circuit is configured such that a connecting means for a pressure or temperature monitoring mechanism can be inserted into the sub pipe section. (3) The breathing circuit according to claim 1, wherein the exhalation pipe and the intake pipe are connected to a Y-shaped supply/exhaust port. (4) An inner tube is arranged coaxially within the conduit to form a double tube, and the inside of the inner tube and between the conduit and the inner tube are either an expiratory tube or an inhalation tube, and the conduit and the inner tube are The breathing circuit according to claim 3, which is connected to the air supply/exhaust port. (5) An expiratory pipe, an inspiratory pipe, an exhalation valve connected to the expiratory pipe and/or a nebulizer connected to the inspiratory pipe, and an air supply/exhaust port connected to the expiratory pipe and the inspiratory pipe, Either the expiratory pipe or the inhalation pipe is a conduit having a main pipe part and at least one sub-pipe part integrally formed with the main pipe part in a continuous spiral shape along the outer peripheral wall of the main pipe part. A breathing circuit characterized by comprising: (6) The breathing circuit according to claim 5, wherein the auxiliary pipe section is a pipe for driving the nebulizer and/or the exhalation valve. (7) The breathing circuit according to claim 5 or 6, wherein the breathing circuit is configured such that a connecting means for a pressure or temperature monitoring mechanism can be inserted into the sub pipe section. (8) The breathing circuit according to any one of claims 5 to 7, wherein the exhalation pipe and the intake pipe are connected to a Y-shaped supply/exhaust port. (9) An inner tube is arranged coaxially within the conduit to form a double tube, and the inside of the inner tube and between the conduit and the inner tube are either an expiratory tube or an inhalation tube, and the conduit and the inner tube are connected to the inner tube. Claim 5, wherein the conduit pipe and the inner pipe are connected to the nebulizer and the exhalation valve, respectively, and the nebulizer and the exhalation valve are connected to the second and third sub-pipe parts, respectively. The breathing circuit according to any one of Items 7 to 7. (10) An inner tube is arranged coaxially within the conduit to form a double tube, and the inside of the inner tube and between the conduit and the inner tube are either an exhalation tube or an inhalation tube, and one end of the conduit and the inner tube is connected to the supply/exhaust port, and in the middle of the double pipe, the exhalation pipe and the exhalation valve are connected, and the intake pipe and the nebulizer are connected, respectively. The breathing circuit according to any one of Items 5 to 7.