JP2810440B2 - Auxiliary device for setting cuff pressure of endotracheal tube - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an auxiliary device for setting cuff pressure of an endotracheal tube, and more particularly, to an intubation in an oral cavity, a nasal cavity, or a tracheal incision into an endotracheal tube. The present invention relates to a cuff pressure setting aid which is used together with a cuffed tracheal tube for use in artificial respiration by connecting a respiratory apparatus and a lung and which can set cuff pressure by visual measurement.

<Conventional technology> A cuff with a cuffed endotracheal tube inserted into the trachea of a person or the like and used for ventilation prevents vomit from the esophagus and the like from entering the trachea and connects the tube. Air-tight between the tracheal inner wall and the endotracheal tube so as to prevent gas leakage from the gap with the tracheal wall while adequately ventilating when performing intermittent positive pressure breathing. Although it is used to maintain the internal pressure of the cuff, the operation of setting the internal pressure of the cuff to an appropriate pressure requires extremely skill, and the development of a cuff internal pressure setting means that can be easily operated has been desired.

<Problem to be Solved by the Invention> A cuff pressure setting assisting tool which is made in view of the above circumstances of the present invention and which can easily set the cuff pressure of an endotracheal tube visually. The purpose is to:

<Means for Solving the Problems> In order to solve the above-mentioned problems, the present invention is a synthetic resin auxiliary tool that enables the cuff pressure of an endotracheal tube to be set by eye measurement, A pilot balloon that expands and contracts in response to an internal pressure, and a cuff pressure indicator disposed so as to sandwich the pilot balloon, wherein the pilot balloon is connected to a tube that communicates with the inside of the cuff; The cuff pressure indicator has one end of a support plate that supports the pilot balloon so as not to come off and one end of a movable plate that opens and closes in accordance with expansion and contraction of the pilot balloon. It is arranged to sandwich the pilot balloon,
In addition, the coupling end of the movable plate with the support plate is bent substantially at right angles to the support plate side, and further, the peripheral portion of the movable plate excluding the coupling end with the support plate, or the coupling end with the movable plate and the pilot balloon. A cuff pressure setting aid for the endotracheal tube, which is provided with a cuff pressure indicating scale indicating the relationship between the opening angle of the movable plate with respect to the support plate and the cuff pressure, is provided at the periphery of the support plate except for the portion on which the support plate is placed. ing.

<Operation> According to the above configuration, the internal pressure of the pilot balloon of the cuff pressure setting assisting device communicated with the inside of the cuff of the endotracheal tube is equal to the internal pressure of the cuff. Therefore, the angle of the movable plate that opens by the inflation of the pilot balloon with respect to the support plate (hereinafter, referred to as the opening angle) increases as the internal pressure of the cuff increases. Therefore, the cuff pressure can be easily set visually by reading a scale (cuff pressure indication scale) in which the cuff pressure previously obtained from the relationship between the internal pressure of the cuff and the opening angle is read.

<Example> Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a cuff pressure setting aid according to one embodiment of the present invention.

As shown in FIG. 1, the cuff pressure setting aid of the present invention comprises a pilot balloon (1) and a cuff pressure indicator (2), and the pilot balloon (1) comprises a connecting means (3) and an inlet (4). The cuff pressure indicator (2) includes an indicator plate (5), a movable plate (6), and a cuff pressure indicator scale (10). A support wall (9) is preferably provided upright on the support plate (5). (7) is a bent portion, (8) is a coupling means, (11) is a cap of the fluid inlet (4), and (12) is a cutout. Hereinafter, each part will be described in detail.

The pilot balloon (1) communicates with the inside of a cuff of an endotracheal tube (not shown) and expands and contracts in accordance with increase and decrease in cuff pressure. In general, the balloon is made of a soft material such as soft polyvinyl chloride or polyethylene. Of synthetic resin. The movable plate (6) opens and closes in accordance with the expansion and contraction of the pilot balloon (1), and the angle between the support plate (5) and the movable plate (6), that is, the opening angle is increased or decreased. The pilot balloon (1) is connected to a tube (not shown) communicating with the inside of the cuff of the endotracheal tube, and a connecting means (3) for communicating the cuff and the pilot balloon (1) is provided. A fluid inlet (4) for injecting liquid into the pilot balloon (1) is provided. Although not necessarily required, the fluid inlet (4) is provided with a cap (11) for closing the inlet (4) after the fluid injection,
As the fluid injection port (4), preferably, a use communication device (disclosed in Japanese Patent Application No. 63-286987) which is opened only when the tip of the syringe is inserted when injecting a fluid with the syringe is used. You. The connection means (3) is not particularly limited as long as it can be connected to the tube in a fluid-tight manner.
Generally, a mating or screwing type connector is used.

The cuff pressure indicator (2) comprises an indicator plate (5), a movable plate (6) and a cuff pressure indicator scale (10),
The movable plate (6) is opened by the expansion of the pilot balloon (1), and the support plate (5) and the movable plate (6) are opened.
The relationship between the cuff pressure and the opening angle is obtained by utilizing the fact that the opening angle, that is, the opening angle becomes larger, and the cuff pressure corresponding to the opening angle is displayed on a scale on the cuff pressure indicating scale (10), and the cuff pressure is visually observed. Settings are possible.

The support plate (5) is a portion for supporting and fixing the pilot balloon (1) so that the pilot balloon (1) does not fall off from the cuff pressure support (2). Generally, the pilot balloon (1) is bonded and fixed with an adhesive or the like. A protection wall (9) is formed at an end of the opposite side of the movable plate (6) to the movable plate (6) at a right angle to the movable plate (6). The protection wall (9) prevents the pilot balloon (1) from shifting toward the free end side of the support plate (5). In FIG. 1, the end of the protection wall (9) is connected to the cuff pressure indicating scale (10). The scale 8 (not shown) also serves as a zero point indicator for reading the cuff pressure indicating scale (10) in the notch (12) provided on the protective wall (9). They are crossing.

The movable plate (6) is a portion that opens (that is, rotates upward) around a connection end with the support plate (5) due to inflation of the pilot balloon (1), and in FIG. 1, the end opposite to the connection end. A cuff pressure indicating scale (10) is provided at a center portion, and a coupling end portion of the scale with the support plate (5) is bent at a substantially right angle toward the support plate (5) to form a bent portion (7). I have. The bent portion (7) is for ensuring that the pilot balloon (1) is inflated uniformly, and is formed at a height approximately equal to the thickness of the pilot balloon (1) before fluid injection.

The cuff pressure indicating scale (10) is a scale on which the cuff pressure obtained from the angle between the support plate (5) and the movable plate (6), that is, the relationship between the opening angle and the cuff pressure is graduated. The installation location of 10) may be any edge portion other than the upper edge of the movable plate (6), or the edge portion of the support plate except for the edge where the movable plate is coupled and the portion where the pilot balloon is placed. However, considering the accuracy of the cuff pressure indicating scale (10), the vicinity of the end opposite to the joint end is preferable. When the cuff pressure indicating scale (10) is provided on the movable plate (6), a zero point indicator fixed to the support plate (5) is generally required.

As the connecting means (8) between the support plate (5) and the movable plate (6), a hinge or a cellophane tape can be generally used, but in addition to these, the material for forming both plates is polyethylene or polypropylene having good hinge properties. In the case of a synthetic resin such as polyamide, a hinge connection can be suitably used.

In addition, the material for forming the cuff pressure support (2) is not particularly limited, but polyethylene, polypropylene, polyamide, polyvinyl chloride, polystyrene, polyester, polycarbonate, or the like is generally used.

Next, the use of the cuff pressure setting aid of the present invention will be described.

When using the cuff pressure setting aid of the present invention, first,
The connecting means (3) is connected to a tube (not shown) communicating with the cuff of the endotracheal tube, and while watching the cuff pressure indicating scale (10), the inflow port (e.g. From 4), a fluid such as air is injected via the pilot balloon (1). When the cuff pressure reaches a desired value, if the above-mentioned in-use communication device for the fluid inlet (4) is used, simply remove the tip (not shown) of the syringe from the fluid inlet (4). Just remove it. When the communication device is not used, close the injection port (4) with the cap (11) while closing the tube portion (13) of the fluid injection port (4) with a finger or the like so as not to leak air. There is a need. Note that the cap (11) is not always necessary when the communication tool is used as the fluid inlet (4) at the time of use.

<Effects of the Invention> As is apparent from the above description, the cuff pressure can be easily set visually by using the cuff pressure setting aid of the present invention. It is possible to perform artificial respiration even when a doctor is not present.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cuff pressure setting aid according to one embodiment of the present invention. <Description of main symbols> 1: Pilot balloon 2: Cuff pressure indicator, 3: Connection means 4: Fluid inlet, 5: Support plate 6: Movable plate, 7: Bend 9: Protective wall 10: Cuff pressure indicator scale

Claims (2)

(57) [Claims] An assisting device made of synthetic resin, which is capable of visually setting a cuff pressure of an endotracheal tube, comprising: a pilot balloon that expands and contracts in accordance with the internal pressure of the cuff; The pilot balloon has connection means for connecting to a tube communicating with the inside of the cuff, and an inlet for injecting fluid, and the cuff pressure indicator However, one end of a support plate that supports the pilot balloon so as not to come off and one end of a movable plate that opens and closes in accordance with the expansion and contraction of the pilot balloon are connected so as to sandwich the pilot balloon, and the support plate of the movable plate The connection end of the movable plate is bent at a substantially right angle to the support plate side, and further the edge of the movable plate excluding the connection end with the support plate,
Alternatively, a cuff pressure indicating scale indicating the relationship between the opening angle of the movable plate with respect to the support plate and the cuff pressure is provided on the peripheral portion of the support plate except for the connection end with the movable plate and the portion where the pilot balloon is placed. Auxiliary tool for setting cuff pressure of tube in tube. 2. A cuff pressure setting assistance according to claim 1, wherein a protection wall surrounding the pilot balloon is provided at an end of the support plate opposite to the end connected to the movable plate, in a direction perpendicular to the support plate. Utensils.