FOOT PEDAL UNIT FOR AIRWAY MASK

Abstract

The invention belongs to the field of medical sciences and respiratory masks. It is a cardiopulmonary resuscitation device that delivers assisted ventilation via a foot- or compressor-controlled bellows mechanism. This device frees the use of the hand used to compress the conventional self-inflating Airway Mask Bag Unit (AMBU), so that the free hand can be used to fit the mask over the patient's face and reduce the mechanical fatigue generated by the manual compression of current mechanisms. The unit attaches to ventilation masks, can have a frequency meter and is compatible with accessories comprising conventional cardiopulmonary resuscitation devices; inside it has a valve that controls the filling of the oxygen reservoir and the time at which oxygen is released to be supplied to the patient.

Claims

1. Pedal insufflation unit for airway mask CHARACTERIZED by a device with five main parts: A first part called mask (1) with a perimeter hermetic seal (1a) which is placed over the patient's face on one side and a coupling (2) connecting the mask (1) with a valve mechanism (3) through the connector (2a); a second part called valve mechanism (3) which has a pressure measuring device (2c) to indicate the pressure at which the air is being insufflated, has a perpendicular connector (2b) that adjusts the pressure measuring device (2c) to the connector (2a), a damper (3b) for external oxygen access, a frequency meter (7) and a reservoir coupling (4a) for connection to a reservoir (4); wherein the valve mechanism (3) is connected to the pedal tube (5) through the perpendicular section (3c) which has a gate (3a) that controls the passage of air coming from a pedal tube (5) and is connected to the reservoir (4); a third part is the reservoir (4) which runs when the pressure is sufficient to raise the damper (3a); a fourth part refers to the bellows pedal (6) or compressor (10) that provides the necessary fluid to propel the oxygen from the reservoir into the mask (1) connected to the fifth part called pedal tube (5) connected at its opposite end to the valve mechanism (3), so that when the bellows pedal (6) is depressed, generates a stream of air flowing through the pedal tube (5) to the connector (3c) on which is located the damper (3a) that rises allowing the mixing of the air generated by the bellows pedal (6) or the air generated by the compressor (10) with the oxygen from the reservoir (4) and with the oxygen from the external source entering through the damper (3b).

2. Pedal insufflation unit for airway mask according to claim 1, CHARACTERIZED in that the valve mechanism (3) is connected to the reservoir (4) with a reservoir coupling (4a), wherein the reservoir stores oxygen flowing from external administration and is connected to the damper (3b) which conducts oxygen to the reservoir (4) and the valve mechanism (3).

3. Pedal insufflation unit for airway mask according to claim 1, CHARACTERIZED in that the damper (3a) is hollow inside and has a valve (3d) which controls the entry of ambient air through the connector (3c) to be carried by the pedal tube (5) to finally reach the bellows pedal (6).

4. Pedal insufflation unit for airway mask according to claim 1, CHARACTERIZED in that the valve mechanism (3) has actuators (3e) with which are connected to the valve (3d) with mechanical, hydraulic, pneumatic or electronic type locking mechanism and conventional particulate filter, wherein the actuators (3e) are in turn depressed by the inner wall of the connector (3).

5. Pedal insufflation unit for airway mask according to claim 1, CHARACTERIZED in that the frequency meter (7) has LED display (8) for visualization of the frequency signals and a signal transmitter (9) that transmits the data to an external display, which estimates the frequency and ventilatory response of the patient by measuring exhaled CO2 continuously.

Description

DESCRIPTION OF THE INVENTION

[0010] The attached figures illustrate the proposed scope of the invention within the proposed foot pedal insufflation unit for airway mask.

[0011] FIG. 1 shows a side view of the foot pedal insufflation unit for airway mask.

[0012] FIG. 2 shows an enlarged side view of the mask and its connection to the valve mechanism.

[0013] FIG. 3 shows a magnified side view of the mask and its relationship to the reservoir and the open connection of the foot-operated insufflator.

[0014] FIG. 4 shows a side view of the pedal insufflation unit.

[0015] FIG. 5 shows a side view of the part (3) and the closed state of the valve controlling the ambient air intake.

[0016] FIG. 6 shows a side view of part (3) and the open state of the valve controlling the ambient air intake.

[0017] FIG. 7 shows a graphical illustration of the hollow gate (3) and the relationship of the actuators to the valve (3d).

[0018] The present invention is a foot-operated insufflation unit for an airway mask which is part of cardiopulmonary resuscitation devices and has the purpose of providing assisted ventilation to the patient by means of a foot-controlled bellows mechanism. This mechanism frees the use of the hand that is regularly used to compress the conventional ambu-bag, in order to be used in the correct adjustment of the mask on the patient's face and ensure a proper seal, also reduces mechanical fatigue generated by the manual compression that is performed with the current mechanisms.

[0019] The unit is coupled to conventional ventilation masks and has five main parts inside: a valve that controls the filling of the oxygen reservoir and the moment in which oxygen is released to be supplied to the patient, an airtight mask, a reservoir, a pedal and a pedal connector tube.

[0020] The device comprises a mask (1) with perimetral hermetic seal (1a) that is placed over the patient's face that when pressed generates a hermetic seal between the face and the mask (1). A coupling (2) connects the mask (1) to the valve mechanism (3) through the connector (2a) which also has a pressure measuring device (2c) to indicate the pressure at which the air is being insufflated and a perpendicular connector (2b) that adjusts the pressure measuring device (2c) to the connector (2a).

[0021] The valve mechanism (3) is connected to the pedal tube (5) through the perpendicular section (3c), where the perpendicular section (3c) has a damper (3a) that controls the passage of air from the pedal tube (5) and a reservoir (4) when the pressure is sufficient to raise the damper (3a).

[0022] The valve mechanism (3) is connected to the reservoir (4) with a reservoir coupling (4a), in the reservoir oxygen is stored which flows from external administration and is connected to the damper (3b) which conducts oxygen to the reservoir (4) and the valve mechanism (3). A bellows pedal (6) is connected to the pedal tube (5), which when depressed, generates a stream of air flowing through the pedal tube (5) to the connector (3c) over which is located the damper (3a) which is raised allowing the mixing of the air generated by the bellows pedal (6) with oxygen from the reservoir (4) and with oxygen from the external source entering through the damper (3b); where this air mixture is directed to the mask (1) through the connector (2) and in this way is supplied to the patient through the mask (1) held tightly on his face.

[0023] Thus, by facilitating the use of both hands in the maneuver of securing the mask (1) on the patient's face, a better oxygen transmission is guaranteed and therefore the cardiopulmonary resuscitation process. On the contrary, when the bellows pedal (6) is not depressed, the damper (3a) remains static, which facilitates the filling of the reservoir (4) with oxygen from an external source that enters through the damper (3b).

[0024] FIG. 4 shows the bellows pedal (6) and the connection (6a) joining it to the pedal tube (5) that conducts air to the connector (3c) to be distributed to the rest of the device.

[0025] The damper (3a) is hollow inside and has a valve (3d) which controls the entry of ambient air through the connector (3c) to be carried through the pedal tube (5) and finally reach the bellows pedal (6). In this way, the bellows pedal (6) will have the necessary fluid to propel the oxygen from the reservoir back into the mask (1). The valve (3d) closes when the bellows pedal (6) is depressed, because the actuators (3e) which are connected to the valve (3d), are in turn depressed by the inner wall of the connector (3) as shown in FIG. 5, generating the closing of the valve (3d) by a mechanical, hydraulic, pneumatic or electronic closing mechanism as shown in FIG. 7. In FIG. 6 the actuators (3e) are shown released, this occurs when the bellows pedal (6) is not depressed, therefore, when the actuators (3e) are released the valve (3d) opens and allows ambient air to enter through the connector (3c) and then the pedal tube (5) to finally reach the bellows pedal (6). The valve (3d) has a conventional and commercially available impurity filter that prevents the entry of unwanted particles.

[0026] In one embodiment of the invention, the device has a frequency meter (7) with LED display (8) for visualization of the frequency signals and a signal transmitter (9) that transmits the data to an external display and allows estimating the frequency and ventilatory response of the patient to facilitate the decrease of respiratory acidosis without generating barotrauma, by measuring exhaled CO2 continuously; which in turn serves to measure the respiratory frequency and the measurement of oxygen saturation SPO2, which is also useful in the estimation of heart rate.

[0027] When the patient is on the floor and the bellows pedal (6) cannot be actuated due to the position of the healthcare personnel, a compressor (10) is actuated which accumulates air and subsequently releases this air towards the patient in a synchronous manner, i.e. the insufflation is automated based on the measurement of the different sensors.

[0028] Airway Mask Bag Unit (AMBU) ventilation must maintain adequate systemic oxygenation in order to maintain basal body requirements and hemodynamic stability. Therefore, the new invention of a foot-operated insufflation unit for airway mask provides a ventilation solution that allows the operator to acquire a favorable position to perform the mask seal (1) and balloon insufflation, in order to achieve effective ventilations, reducing the resistance to the entry and exit of fresh gases and reducing both the excessive loss of air in the system and the physical effort made by the health professional in charge, by improving the ergonomics to carry out the maneuver.