JPH0410848Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a peep bottle for obtaining positive end-expiratory pressure (PEEP) when weaning a ventilator from a severely injured patient such as respiratory failure.

<Prior art> In general, conventional peep bottles used in combination with artificial respirators to apply pressure to prevent lungs from collapsing during the exhalation phase are used in conjunction with peep bottles, which are used in conjunction with respirators to apply pressure so that the lungs do not collapse during the exhalation phase. An exhalation pipe led from the patient's exhalation valve side is inserted into the water surface to an appropriate depth. In this case, in order to obtain this predetermined end-expiratory positive pressure (hereinafter referred to as peep pressure), the water level rises due to air bubbles caused by exhalation, making it difficult to read the water level accurately. Further, the head pressure is the airway internal pressure plus the flow resistance in the exhalation valve and the exhalation circuit.

<Problem to be solved by the invention> In view of the above-mentioned circumstances, the present invention is a simple peep bottle that uses a transparent bottle type container and has a water level scale that is not affected by the pushing up of the water surface by air bubbles and a direct reading scale for airway internal pressure. The purpose is to provide the following.

<Means for Solving the Problems> The present invention forms a vertical transparent cylindrical container body made of glass, plastic, etc., and includes an exhalation introduction inner pipe connected to the patient's exhalation valve side in the center of the cylindrical container body. It is inserted from the top surface to near the bottom filled with a predetermined amount of water, and an atmospheric exhaust port is provided at the top of the cylindrical container body, and a filling water amount scale, a water head pressure scale, and a water head pressure scale are provided on the peripheral wall surface of the cylindrical container body. In addition to providing an apparent head pressure scale that rises with proportional air bubbles, a thin tube that opens at a lower position from the lower end of the exhalation introduction tube and has a direct reading scale is provided, and is connected to the exhalation valve to enable measurement of airway pressure. It is.

<Function> Due to the above structure, a peep bottle filled with a predetermined amount of water is attached to the bed rail, etc., and the exhalation valve side tube of the respiratory valve connected to the trachea is connected to the end of the exhalation introduction tube of the bottle. Connecting. In this state, exhaled air from the patient's lungs passes through the exhalation valve, flows from the tube to the exhalation introduction tube, is released into the water from the lower end gap of the exhalation introduction tube, and rises as air bubbles to the atmosphere through the atmospheric exhaust port. released. In this case, the height between the lower end of the exhaled air introduction inner tube and the water surface becomes water head pressure, which is applied to exhaled air, and this becomes peep pressure. That is, a constant residual pressure is applied to the exhaled air, which applies pressure to the lungs and prevents them from deflating more than necessary. The water head pressure at this time can be determined from the water head pressure scale on the outer peripheral wall of the transparent cylindrical container body. Of course, in reality, the water surface is pushed up by air bubbles caused by exhalation, but it is sufficient to read the apparent water head pressure scale, which is proportional to the water head pressure scale.

<Example> Hereinafter, the present invention will be described in detail based on the drawings of the example.

Reference numeral 1 denotes a vertical transparent cylindrical container body made of glass, plastic, etc., and the cylindrical container body 1 has an exhalation inlet tube 2 connected to the patient's exhalation valve side in the center, and a bottom portion 4 from the top surface 1a which becomes the lid portion 3. It is inserted so that the lower end 2a reaches a position in the vicinity of the bottom surface 1b separated by a gap a, and an atmosphere exhaust port 5 is provided on the side surface of the lid portion 3, and a filling water amount scale 6 is provided on the peripheral wall surface 1c of the cylindrical container body 1. A capillary tube for direct measurement of peep pressure, provided with a target water head pressure scale 7 and an apparent water head pressure scale 8 raised with bubbles that can be expanded in proportion to the water head pressure scale 7, and with an entrance 9a at the upper part on the inner surface of the peripheral wall surface 1c. Part 9 is added to form a peep bottle 10 as a whole. In this case, the bottom part 4 has a cup-shaped cross section, and a groove part 11 is arranged on the peripheral wall surface 1c to stabilize the water surface caused by air bubbles. Reference numeral 14 denotes a drainage pot provided at the lower end of the groove portion 11 of the cylindrical container body 1.

Next, to explain this action, first, a predetermined amount of water B for obtaining water head pressure is injected with the lid 3 removed. This is done while looking at the filling water amount scale 6, which is a guideline for the amount of water to be filled in ml. The peep bottle 10 filled with water is attached to a head fence or the like using an attachment band (not shown), and the trachea of the lung A is attached to the upper end 2b of the internal exhalation pipe 2 that protrudes from the center top of the peep bottle 10. Breathing air valve body 12 inserted into
A bellows-shaped tube 1 led from the exhalation valve portion 12a side of
Connect 3. Furthermore, an oxygen supply device C is configured to supply oxygen to the exhalation valve portion 12b side of the respiration valve body 12.

Here, the exhaled air b exhausted by the breathing of the patient with a lung disease resists the spring 12c and the exhalation valve 1
2a, the exhaled air flows into the inner pipe 2 of the peep bottle 10 through the tube 13, and the exhaled air b is discharged into the water B as bubbles b' from the lower end 2a of the exhaled air introduction pipe 2, and is discharged into the upper space of the cylindrical container body 1. 1d, and is discharged into the atmosphere from the atmosphere exhaust port 5.

In this case, the exhaled air b passing through the exhaled air introduction inner tube 2 has the following:
The lower end 2a and the water surface height l of water B are multiplied together as a water head pressure, and this pressure reaches lung A as a so-called peep pressure.
This prevents the lung A from collapsing.

In addition, the water head pressure measurement which becomes the peep pressure scale at this time is carried out at the water head pressure scale 7 on the peripheral wall surface 1c of the cylindrical container body 1.
However, in reality, this water surface is raised due to the upward movement of the air bubbles 6, so it is difficult to read the exact pressure. The water surface height l′ raised by this bubble b′,
That is, the priming level can be read by looking at the apparent head pressure scale 8 which is proportional to the head pressure scale 7. Of course, when reading these scales, since the cylindrical container body 1 is made of a transparent member, if you look straight ahead from the side, you will be able to see the point where the water surface and the scale match, and the reading will be accurate.
If necessary, the exhaled air b can be guided from the exhaled air valve body 12 to the thin tube part 9 attached to the peripheral wall surface 1c of the cylindrical container body 1 using a separate detour pipe 16 that branches off.
Since the water level in the thin tube section 9 is pushed down by this exhalation pressure, by reading the direct reading water head pressure scale 15 provided on the peripheral wall surface 1c, the exhalation flow resistance in the exhalation valve body 12 and the tube 13 can be reduced. Airway pressure can be measured without being affected.

<Effects of the invention> As mentioned above, the peep bottle of the present invention has a transparent cylindrical bottle body, and an internal exhalation introduction tube for guiding exhaled air is arranged so as to reach near the bottom.
In addition, since the filling water amount scale, water head pressure scale, and apparent water head pressure scale are arranged on the peripheral wall surface of the cylindrical container main body, the amount of water to be filled into the cylindrical container main body can be filled while directly viewing from the side, and the peep The target peep pressure can be easily obtained by reading the water head pressure using the water head pressure scale. Of course, during use,
Since the water surface rises due to air bubbles, this rising water level can be measured using the apparent head pressure scale. That is, since it is equipped with an apparent head pressure scale for reading the water level rising due to air bubbles, the scale can be read reliably. In addition, by reading the direct reading head pressure scale, the airway pressure, that is, the positive end-expiratory pressure, can be accurately grasped, making it possible to accurately and easily manage respiratory failure patients when weaning them from a ventilator. be effective.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a sectional view, FIG. 3 is an explanatory view of the state of use, and FIG. 4 is a sectional view of the respiratory valve body. 1...Transparent cylindrical container, 1a...Top surface, 1b...Bottom surface, 2...Inner tube for exhalation introduction, 5...Atmospheric outlet, 6
... Filling water amount scale, 7 ... Water head pressure scale, 8 ... Apparent water head pressure scale, 9 ... Direct reading thin tube section, 15 ...
Direct reading head pressure scale, 16...Detour pressure pipe.

Claims (1)

[Scope of utility model registration request] A vertical transparent cylindrical container body made of glass, plastic, etc. has a cup-shaped bottom and a concave groove on the peripheral wall surface, and an exhalation inlet in the center of the cylindrical container body is connected to the patient's exhalation valve side. Insert the tube from the top surface to near the bottom filled with a predetermined amount of water, and connect an atmospheric exhaust port to the top of the cylindrical container body.
A thin tube that communicates with the patient's airway and opens lower than the lower end of the internal expiratory tube is provided on the peripheral wall, and the peripheral wall of the cylindrical container body is marked with a filling water amount scale, a water head pressure scale, and air bubbles proportional to the water head pressure scale. A peep bottle with a rising apparent head pressure scale and a direct reading head pressure scale on the thin tube.