Medical suction device

Abstract

This medical suction device prioritizes safety by informing the operator that the suction pressure setting dial is being operated not only at the set upper limit of the safe range, but also in areas exceeding this limit. [Solution] The setting dial 2 for adjusting the suction pressure is equipped with multiple click mechanisms that generate a click sensation accompanied by sound and / or vibration transmitted to the hand from a position exceeding the upper limit of the safety range as the setting dial rotates. The click sensation is continuous and intermittent up to the position of the maximum scale, and the operator can recognize that the suction pressure setting of the medical suction device has exceeded the upper limit of the safety range. A click groove 13 is provided inside the setting dial which is fixed to the rotating shaft 10 of the vacuum pressure reducing valve 14 that adjusts the suction pressure. When the setting dial rotates, an engaging member 12 is pushed out by an elastic member 11 housed in an elastic member housing hole 16 provided in the vacuum pressure reducing valve and engages with the click groove, generating a click sensation accompanied by sound and / or vibration transmitted to the hand.

Description

Technical Field

[0001] The present invention relates to a medical suction device.

Background Art

[0002] In medical institutions such as hospitals and clinics, various medical suction devices are installed in operating rooms and patient rooms. For example, a medical suction device installed in a patient room is generally configured to insert a suction tube connected to a suction tube into the trachea and suction and coagulate the secretions of a patient containing sputum. The suction device installed in the patient room is connected to a medical outlet connected to the suction source of the hospital equipment. The suction pressure of the medical outlet is up to -80 kPa. In a medical suction device, the pressure of this suction source is appropriately adjusted by a vacuum reducing valve and used for patients. According to the guidelines of the Japanese Respiratory Therapy Society, the recommended suction pressure is up to -20 kPa (-150 mmHg), and it is set not to exceed this value (※Tracheal Suction Guidelines 2013). Also, according to the AARC Clinical Practice Guidelines (2022) regarding tracheal suction, the suction pressure should be limited to -200 mmHg or less. According to reference (1), suction within the airway of adults is preferably -100 to -200 mmHg (-13 to -27 kPa). If the suction pressure is too high, it may damage the airway mucosa or have an adverse effect on breathing. On the other hand, there may be cases where a suction pressure higher than the recommended suction pressure for temporary use by patients is required, such as when the sputum is viscous or when removing stagnant secretions in the tube. The setting of the suction pressure of a medical suction device widely uses a rotary dial.

Prior Art Documents

Non-Patent Documents

[0003]

Non-Patent Document 1

Summary of the Invention

[0004] Traditional rotary dial suction devices require visual confirmation of the set pressure. However, in many wards, suction devices are mounted on the bedside wall or cart, making the dial markings difficult to see. Especially when the device is moved to accommodate the bed's position or the patient's body, the markings may only be visible from an angle or sideways, making it difficult to confirm the accurate value. Tracheal suctioning is often an emergency, and in situations where immediate action is required, there may not be time to carefully check the dial setting. During suctioning, attention must also be paid to the patient's respiratory status, vital signs, and facial expressions. Therefore, it is not always possible to concentrate solely on checking the markings, further complicating accurate confirmation. In such circumstances, setting the suction pressure excessively high can damage the airway mucosa or negatively affect breathing.

[0005] Conventional medical suction devices have a dial for setting the suction pressure that has a slight click at the -30kPa position, indicating to the operator that it is the boundary of the safe range. In this case, if the dial is already set above the upper limit of the safe range, the user will not be able to recognize that the safe range has been exceeded unless they visually check the value on the dial. The problem that this invention aims to solve is to provide a medical suction device that can, at any setting, supplementarily inform the user that the position of the dial scale used to set the suction pressure has exceeded the safe range. [Overview of the Initiative] [Means for solving the problem]

[0006] This invention provides a medical suction device that, when the suction pressure is set to the upper limit of the safety range, for example -30kPa, by operating a dial to set the suction pressure, informs the user with a click sensation accompanied by sound and / or vibration transmitted to the hand. Furthermore, when the setting exceeds the safety range, a click sensation accompanied by sound and / or vibration transmitted to the hand is generated each time the dial is operated by a predetermined amount, informing the operator that the suction pressure setting exceeds the upper limit of the safety range. The degree of the click sensation may be varied depending on the setting value, for example, by changing the magnitude of the sound and / or vibration transmitted to the hand as the suction pressure setting increases. No click sensation is generated when the setting is within the safety range, thereby allowing the operator to know whether the suction pressure setting is within the safety range by means other than looking at the dial scale. [Effects of the Invention]

[0007] The medical suction device of this invention provides an input device that allows the operator to recognize, without relying on sight, that the dial setting position for the suction pressure, which requires attention, is in place through a click sensation accompanied by sound and / or vibration transmitted to the hand during rotational operation. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view showing a medical suction device according to one embodiment of the present invention. [Figure 2] This figure shows the suction pressure setting dial of a medical suction device according to one embodiment of the present invention. The set value of the suction pressure is adjusted by rotating the dial. [Figure 3] This is a block diagram showing the configuration of a medical suction device according to one embodiment of the present invention. [Figure 4] This is a perspective view showing a click generation mechanism provided in a vacuum pressure reducing valve of a medical suction device according to one embodiment of the present invention. [Figure 5] This is an exploded perspective view of a vacuum pressure reducing valve according to one embodiment of the present invention. [Figure 6] This is an exploded perspective view showing the setting dial and click-generating mechanism provided on the main body of a medical suction device according to one embodiment of the present invention. [Figure 7]This figure shows an embodiment of the present invention in which the width of the click groove is changed to create a difference in the click feel. [Modes for carrying out the invention]

[0009] As the suction pressure setting dial attached to the rotating shaft of the vacuum pressure reducing valve rotates, an engaging member, pressed by an elastic member, repeatedly engages and disengages from a click groove, generating a click sensation accompanied by sound and / or vibration transmitted to the hand. The click groove extends intermittently from a preset position up to the maximum scale position, informing the operator that the specified setting range has been exceeded through a click sensation accompanied by sound and / or vibration transmitted to the hand. [Examples]

[0010] An embodiment will be described below with reference to the attached drawings. Figure 1 is a perspective view of a medical suction device 100 according to one embodiment of the present invention. The cover lock button 3 is pressed to open the bottle cover 4, the storage bag connected to the suction tube connection port 5 is placed inside the bottle 7, the bottle cover 4 is closed, the suction tube is attached to the suction tube connection port 5, the suction pressure is set with the setting dial 2, and the ON / OFF lever 8 is turned to the ON position to start suction. As shown in this figure, in this embodiment, the medical suction device 100 sets the suction pressure with the setting dial 2.

[0011] Figure 2 is a block diagram showing the configuration of a medical suction device 100 according to one embodiment of the present invention. The pressure of the suction source of the hospital equipment is adjusted to an arbitrary suction pressure using a setting dial 2 attached to a vacuum pressure reducing valve 14, and the patient's secretions aspirated from the suction tube connection port 5 are stored in a bottle 7.

[0012] Figure 3 shows the dial for setting the suction pressure of the medical suction device 100 in this embodiment. The suction pressure is adjusted by rotating the dial. The suction pressure is adjusted by aligning the scale marked on the setting dial 2 with the indicator line 9. The dial scale is marked at 10 kPa intervals.

[0013] Figure 4 shows an embodiment of a mechanism for generating a click feeling during dial operation. There is a click groove 13 inside the setting dial 2 fixed to the rotating shaft 10 of the vacuum pressure reducing valve 14 that adjusts the suction pressure. When the setting dial 2 rotates, the engaging member 12 pushed out by the elastic member 11 housed in the elastic member housing hole 16 provided in the vacuum pressure reducing valve 14 engages with the click groove 13, generating a click feeling accompanied by sound and / or vibration transmitted to the hand. In the embodiment, the scale marks of the setting dial for setting the suction pressure are provided at intervals of 10 kPa, and the click groove 13 is intermittently provided from the position of -30 kPa, which is the first scale mark exceeding the setting range recommended for patients in the reference (1), to the position of the maximum scale mark. Within this range, no matter where the setting dial 2 is rotated, the engaging member 12 repeatedly engages and disengages with the click groove 13 to obtain a click feeling, which conveys to the operator the distinction between the setting range usually used by patients and the setting range exceeding this. In the embodiment, the elastic member 11 is a coil spring and the engaging member 12 is a steel ball. By changing the position of the click groove 13, the set value at which the click feeling starts can be changed.

[0014] Figure 5 is an exploded perspective view of the vacuum pressure reducing valve in Figure 4. The elastic member 11 and the engaging member 12 are housed in the elastic member housing hole 16 provided in the vacuum pressure reducing valve lid portion 15, and the setting dial 2 provided with a click groove inside covers the outside of the elastic member housing hole 16, the elastic member 11, and the engaging member 12 and is fixed to the rotating shaft 10 of the vacuum pressure reducing valve 14.

[0015] Figure 6 shows an embodiment in which a mechanism for generating a click feeling during dial operation is provided between the main body 1 of the medical suction device 100 and the setting dial 2. When the setting dial 2 rotates, the engaging member 12 pushed out by the elastic member 11 housed in the elastic member housing hole 16 provided in the setting dial 2 engages with the click groove 19 provided in the main body 1, generating a click feeling accompanied by sound and / or vibration transmitted to the hand.

[0016] FIG. 7 shows an embodiment in which the degree of click feeling is provided with a difference according to the set value of the suction pressure. By providing a difference in the widths of the click grooves 13a, 13b, 13c, and 13d, a difference is provided in the magnitude of the click feeling accompanied by the sound when the engaging member engages with the click groove and / or the vibration transmitted to the hand. In this embodiment, as the setting becomes higher, the click feeling is increased to prompt the operator to pay attention. The magnitude of the click feeling can also be increased or decreased according to the rotation angle and emphasized more than others at a predetermined position.

Explanation of Signs

[0017] 1 Main body 2 Setting dial 3 Cover lock button 4 Bottle cover 5 Suction tube connection port [[ID=1十七]]7 Bottle 8 ON / OFF lever 9 Indication line 10 Rotation axis 11 Elastic member 12 Engaging member 13 Click groove 14 Vacuum pressure reducing valve 15 Vacuum pressure reducing valve cover part 16 Elastic member accommodation hole 17 Elastic member 18 Engaging member 19 Click groove [[ID=四十三]]20 Elastic member accommodation hole 100 Medical suction device

Claims

1. A medical suction device comprising a main body and a setting dial for adjusting suction pressure by rotating the rotating shaft of a vacuum pressure reducing valve attached to the main body, wherein the device is equipped with a click mechanism that generates a click sensation accompanied by sound and / or vibration transmitted to the hand when an engaging member, pressed by an elastic member at a preset position, engages with a click groove as the setting dial is rotated, and further comprising at least one click mechanism in the direction of increasing suction pressure, and each time the setting dial is operated by a predetermined amount, the operator is informed that the specified setting range has been exceeded by a click sensation accompanied by sound and / or vibration transmitted to the hand.

2. The medical suction device according to claim 1, characterized in that the click mechanism moves continuously from a preset position to the maximum scale position intermittently, and this mechanism is provided between the vacuum pressure reducing valve cover and the setting dial.

3. The medical suction device according to claim 1, characterized in that the click mechanism is provided between the main body of the medical suction device and the setting dial.

4. The medical suction device according to claim 1, characterized in that the click mechanism is provided with different click sensations accompanied by sound and / or vibration transmitted to the hand depending on the set value of the suction pressure.

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