JP2006174939A - Phlegm aspiration tube driving device and phlegm aspirator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automate phlegm aspiration work by providing an phlegm aspiration tube feeding mechanism allowing long-distance driving of the phlegm aspiration tube, a prevention means simply preventing the spread of pollution between patient's internal and external, a control means safely inserting/pulling out the phlegm aspiration tube, and a control means interlocking the start/stop of the aspiration with the pull-out operation of the phlegm aspiration tube. <P>SOLUTION: This phlegm aspiration tube 300 is clamped between large-diameter driving parts 523a and 523B and the large-diameter driving parts are rotatingly driven in the inverse direction of the feeding direction by a roller driving device 600 at unchangeable torque to insert/pull out the phlegm aspiration tube 300. A phlegm aspiration tube driving assembly 1100 or 1110 including at least a phlegm aspiration tube feeding mechanism 500, the phlegm aspiration tube 300, and a protection bag 310 is integrally fed and is disposed after the use. The insertion/pull-out of the phlegm aspiration tube 300 and the start/stop of the aspiration are controlled using signals from a phlegm aspiration tube position detecting device comprising marks 320 and 321 attached to the phlegm aspiration tube 300 and a detecting part 700 supported to a fixed relative position to a casing 550 of the phlegm aspiration tube feeding mechanism 500. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

In the present invention, a tracheal cannula is attached to the trachea of a patient having difficulty in spontaneous breathing, and connected to a multi-branch tube connected to the tracheal cannula together with a ventilator to suck and remove sputum (hereinafter simply aspirated or sucked). I) It relates to a suction device.

In the following description, the end on the patient side of each element is called the end, and the end on the outside is called the root end.

Patients with reduced or stopped spontaneous breathing may be ventilated with a ventilator through a tracheal cannula attached through tracheostomy. However, since the ventilator does not have a function of sucking sputum, if sputum accumulates in the trachea, it becomes difficult to breathe, which causes great pain and fear to the patient. Therefore, it is necessary to remove wrinkles on a regular basis or according to the patient's request.

In the case of sucking by a caregiver, the normally closed connection port of the multi-branch tube connected to the root end of the tracheal cannula is opened, and the suction tube connected to the suction device is inserted from the open portion to suck The end of the tube is allowed to reach the soot in the trachea, and then the suction of the soot is started by connecting the root end of the suction tube and the suction device. Pull out the suction tube while continuing suction of the soot, and when suction is finished, disconnect the suction tube root end from the suction device, pull out the suction tube from the open part, and close the open part. End suction.

Sucking should be done every one or two hours, day or night, or in the event of sudden dyspnea due to sputum, but current sucking work should only be performed by qualified health care workers or patient families. Because there are restrictions that can not be performed, there is a problem that the caregiver is overburdened, and it also hinders the patient's home treatment. In addition, if a person suddenly has difficulty breathing due to hesitation, there is also a problem that the patient suffers a lot of suffering and fear before the caregiver arrives.

Therefore, it is desired to be able to automatically perform the sucking operation by detecting the patient's own command or the change of the situation, and a sucking device for that purpose has been proposed.

Patent Publication No. 2002-219175 “Adaptive Ventilation Adapter and Automatic Suction Device”, which is a first example of a conventional suction device, covers the main tube of the cannula for directing the air supply from the ventilator to the airway. A device for automatically sucking a sputum is proposed. This device uses a respirator adapter with a respiration opening / closing valve connected to a ventilator and a suction tube opening / closing valve connected to a sputum suction tube for artificial respiration. The device is connected to a cannula and operated so that when one of the two types of valves is opened, the other is closed, so that the sputum in the cannula for artificial respiration can be sucked. This suction device does not use a suction pipe for soot suction.

Patent Publication No. 2002-177378, “a suction device for sputum in the airway”, which is a second example of a conventional suction device, is a dual type consisting of an inner tube and an outer tube at the base end of a connector connected to a tracheal cannula. The end portion of the snake tube is connected, while the support portion to which the catheter connected to the suction line is attached is connected to the base end portion of the double snake tube. The air gap is formed in a hermetically sealed state, and a communication part for communicating the air gap with the intake line is provided in the support part, so that the pressure in the air gap becomes low during suction and normally extends. A suction device that enables the inner and outer cylindrical serpentine tubes to be shrunk during suction, and is connected to the tracheal cannula via the connector so that the catheter can be inserted into and removed from the trachea via the tracheal cannula. Proposed suction device That.

JP 2002-219175 A JP 2002-177378 A

If suction of a severe patient's sputum that is difficult to evacuate, or suction of a high-viscosity sputum, the suction tube end must be inserted until it reaches a deeper sputum than the tracheal cannula end. On the other hand, the suction tube during standby waits further to the root side than the connection port with the ventilator of the multi-branch pipe connected to the tracheal cannula, and the ventilation passage area from the ventilator to the tracheal cannula is increased. It is desirable not to narrow it.

In addition, since the tracheal cannula is fixed to the cartilage by incising the trachea of the patient, the external force, torque and vibration transmitted to the tracheal cannula must be minimized.

Further, it is desirable that the force for driving the suction tube during insertion and removal and the insertion / extraction speed of the suction tube are constant.

In order to realize these, (1) the suction tube can be inserted and removed from the standby position further to the deeper side than the end of the tracheal cannula further than the connection port between the multi-branch tube and the ventilator. It can be driven for long distances, (2) The driving force and driving speed do not change depending on the insertion position of the suction tube, (3) The patient is not overburdened, and (4) The burden on the patient does not change depending on the insertion position. An automatic suction pipe drive device with various conditions is required.

In the first example of the prior art, the sputs discharged to the vicinity of the end of the tracheal cannula are sucked, and the deep sputum cannot be sucked.

In the second example of the prior art, the suction tube is inserted and removed by the difference between the expansion of the double serpentine spring and the contraction force due to the low pressure in the gap formed by the double serpentine. Fluctuates depending on the insertion / extraction position of the suction tube, and the double serpentine tube expands / contracts as the suction tube is inserted / removed, so the double serpentine tube holding load carried by the tracheal cannula fluctuates, and sufficient suction tube drive length If the double snake tube is lengthened in order to ensure the thickness, the double snake tube holding load of the tracheal cannula becomes excessive.

The first object of the present invention is (1) the suction tube can be inserted / removed regardless of human power, (2) the suction tube can be inserted / removed at a long distance of at least 200 mm, (3) when the suction tube is driven The torque and driving reaction force applied to the tracheal cannula do not change. (4) The driving speed of the suction tube does not change depending on the insertion / extraction position of the suction tube. (5) To hold the drive device depending on the insertion / extraction position of the suction tube. (6) To provide an automatic driving device for a suction tube having a feature in which the load applied to the tracheal cannula does not become excessive even if the length or driving distance of the suction tube is increased. It is in.

Ventilators and suction devices must be able to prevent the secretion of secretions from the trachea and the entry of external substances into the trachea. Further, when the suction device is continuously used for a long period of time, a chemical solution injection / discharge device for cleaning the inside and outside of the suction tube is required, and there is a drawback that the structure and procedure therefor are complicated. Furthermore, there is a limit to washing the portion to which the secretion is attached, and it is extremely difficult to clean the details of the complicated mechanism. This is especially difficult when aiming at home care. However, if the period of use is limited to about one night, which accounts for most of the causes of increased caregiver burden, cleaning with chemical injection is considered unnecessary. Moreover, if the whole including the complicated mechanism part to which secretions adhere can be discarded, it is thought that the suction device which can be used cleanly and easily can be implement | achieved.

The second object of the present invention is based on the assumption that the usage period is about one night, and the portion of the suction tube that protrudes outside the tracheal cannula during standby and is inserted into the tracheal cannula during insertion is isolated from the outside. The structure that can prevent the diffusion of the outside and the entry of external substances into the trachea, and can easily separate the components that are difficult to clean and the components that are difficult to clean by touching the secretions. To provide a suction pipe driving device and a suction device that do not require cleaning and that are configured so that difficult components can be packaged and stored cleanly in advance and can be safely and easily discarded and replaced after a short period of use. .

The start and stop of insertion / extraction of the suction tube may be performed by the patient's command or detection of some situation, but the insertion side should not be inserted further into the deep part of the trachea, and the extraction side will be further If it is pulled out, there is a limit that ventilation from the ventilator leaks outside and cannot be supplied to the patient. In conventional devices, this limit is not clear and cannot be adjusted.

A third object of the present invention is to provide a safety device in which the insertion limit and the withdrawal limit of the suction tube can be set and can be adjusted according to the patient and the patient's situation.

When the suction tube sucks deep soot in the trachea, if suction is performed while the suction tube is inserted, the tracheal wall is strongly sucked into the end of the suction tube and is easily damaged. Therefore, it is desirable to perform suction only when the suction tube is pulled out. In the second example of the prior art, the suction tube is inserted deeper than the tracheal cannula, but since the suction tube is inserted using a low pressure by suction, the suction tube insertion start and the suction start are simultaneously performed. Therefore, the above problems cannot be dealt with.

A fourth object of the present invention is to provide a suction device capable of reducing damage to the tracheal wall by stopping suction when the suction tube is inserted and performing suction when the suction tube is pulled out.

In order to achieve the first object, when the suction tube is put between two rotatable rollers and the two rollers are rotated in reverse, the suction tube is moved in the longitudinal direction. The two rollers are of equal size and can be driven with torques opposite to each other, the suction pipe is fed in the insertion direction by the forward drive of both rollers, and the suction pipe is moved by the reverse drive. The suction pipe feeding mechanism was configured to feed in the pulling direction.

With this configuration, (1) the suction tube can be inserted and removed by a driving source other than human power, and (2) any length of suction tube can be used. The suction tube can be inserted / removed even at a distance, and (3) the trachea that supports the suction tube feeding mechanism by equalizing the magnitude of driving the two rollers and canceling out the torques in opposite directions. No torque is transmitted to the cannula, (4) the driving speed does not change depending on the insertion / extraction position of the suction tube, and (5) the configuration of the suction tube feed mechanism does not change regardless of the position of the suction tube. The load and torque applied to the cannula do not change. (6) For the same reason, the load and torque applied to the tracheal cannula do not change even if the length of the suction tube itself or the insertion / extraction distance changes.

As a means for supplying torques of equal magnitude to the two rollers in opposite directions, a first rotating shaft directly connected to one drive source is connected to the first roller of the two rollers. In addition, a torque division reversing mechanism is provided in which a first gear is attached to the first rotation shaft, and a second gear having the same diameter and the same number of teeth as the first gear is engaged with the first gear. The roller driving device was configured to connect the rotating shaft of the gear to the second roller of the two rollers.

With this configuration, the torque from one drive source can be divided into two torques having the same magnitude and opposite directions, and the two rollers can be driven respectively. Further, by fixing the stationary side of the drive source to a fixed bed mechanically insulated from the tracheal cannula, it was possible to prevent the reaction torque of the drive source from being transmitted to the tracheal cannula.

In order to achieve the second object, (1) a terminal connection port connected to a multi-branch tube having a connection port with a tracheal cannula, a connection port with a ventilator, and a connection port with a suction device; A suction pipe feeding mechanism including two rollers and a suction port of the suction pipe; and (2) a bag having the suction pipe penetrated therein, one end of which is the suction pipe of the suction pipe feeding mechanism. A protective bag surrounding the pipe through-hole and connected to the suction pipe feeding mechanism in an airtight manner, and the other end being airtightly or almost airtightly connected to the root side of the suction pipe, and (3) three elements of the suction pipe Is constructed as a suction tube drive assembly, the connection to the external mechanism of the suction tube drive assembly is removed, and it can be easily installed, making it possible to manufacture, wrap, supply, store, and discard each suction tube drive assembly. I was able to do it.

In this way, the suction tube is isolated from the outside to prevent the secretions from diffusing to the outside and the entry of external substances into the trachea. Now it is cleanly manufactured, packaged, supplied and stored, and can be safely and easily discarded and replaced after a short period of use.

In order to achieve the third object, the extraction limit mark and the insertion limit mark are fixedly attached to the external projecting portion of the suction tube, and the other is fixed after adjusting its position in the longitudinal direction of the suction tube. At the same time, the detection portion of the mark was fixed to the suction tube drive assembly. In order to set the position of the detector to a position that allows expansion and contraction of the protective bag, a sensor support made of an elastic material that is difficult to expand and contract in the axial direction and is flexible against bending is used. The detector was fixed along the soot tube at a position away from the suction tube in the axial direction.

By using the insertion limit and withdrawal limit signals obtained in this way, the insertion limit and withdrawal limit of the suction tube can be set appropriately according to the patient and the patient's situation.

In order to achieve the fourth object, a gas-liquid separation bottle for separating the suctioned air and the secretion from the suction source so that the sucked secretion is not sucked into the suction source is provided between the root end of the suction tube and the suction source. An open / close valve provided between the gas-liquid separation bottle and the suction source, and after the insertion limit mark is detected, the suction pipe starts to be pulled out and the open / close valve is opened. When the valve stops, the on-off valve is closed.

By doing so, the suction can be stopped when the suction tube is inserted with a high possibility of damaging the tracheal wall and when the suction tube is stopped.

According to the first aspect, the suction pipe 300 can be inserted and removed for a long distance at a constant speed and with a constant driving force. In addition, the burden on the patient does not increase even when the driving distance is increased.
According to claim 2, the torque transmitted to the rollers 520A and 520B that drive the suction tube 300 is canceled when the suction tube 300 is inserted and removed, so that the torque transmitted to the tracheal cannula 200 is eliminated, and vibrations of the motor and the like are also blocked. I was able to.
According to the third aspect, the relative position of the suction tube 300 to the patient 1 can be reliably detected, and the optimum insertion limit position for the patient 1 can be set.
According to the fourth aspect, the suction tube 300 can be inserted / removed only within a safe range with respect to the patient 1, and safety is improved.
According to claim 5, it is possible to supply the patient and the external contamination transmitting part in a sterilized state and dispose of it after use, so that a clean sucking operation can be economically performed even in a general household environment. became.
According to the sixth aspect, a cleaner suction work than that of the fifth aspect can be easily performed.
According to the seventh aspect, it is possible to start and stop the suction at the desired timing of the suction work while preventing the on-off valve 1002 from being contaminated by the soot and becoming inoperable.
According to the eighth aspect, the tip of the suction tube 300 is fixed to the tracheal wall, and the chance of damaging the inner wall of the trachea can be reduced, and safety is improved.
According to the ninth aspect, a clean automatic sucking operation can be easily and reliably realized.

The first embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a first embodiment of a suction tube driving device and suction device according to the present invention.
A first root side connection port of a multi-branch tube connecting a tracheal cannula 200 attached to a trachea 2 of a patient 1 and a multi-branch tube 410 connected to a root end 202 of the tracheal cannula and a ventilator 400 (not shown). 412 and the suction pipe end 301 in a state of waiting at the suction pipe standby position further on the base side than the first base side connection port 412 are shown.

The distal end connection port 411 of the multi-branch tube is fitted to the root end 202 of the tracheal cannula. A ventilation hose 413 connected to the ventilator 400 is connected to the first root side connection port 412 of the multi-branch pipe. The second base side connection port 414 of the multi-branch pipe is fitted with the terminal side connection port 510 of the housing 550 of the suction pipe feeding mechanism 500 of the present invention. By engaging the pin 511 with the flange 415 of the second root side connection port 414 of the multi-branch pipe, the fitting of the second root side connection port 414 of the multi-branch pipe and the terminal side connection port 510 of the housing is intended It is designed not to be pulled apart.

Two rollers 520A and 520B are incorporated in the housing 550, supported by two roller bearings 521A and 522A and 521B and 522B, respectively. Since only one set is visible in FIG. 1, the AA view of FIG. 1 is shown in FIG.

In FIG. 2, two rollers 520A and 520B are rotatably held by two roller bearings 521A and 522A and 521B and 522B, respectively, and between two roller bearings 521A and 522A and 521B and 522B, respectively. Have large-diameter drive parts 523A and 523B. The suction pipe 300 is sandwiched between the two large-diameter driving portions 523A and 523B, and the suction pipe 300 can be driven in the longitudinal direction by rotating the two rollers 520A and 520B in opposite directions. It is configured.

3 is a view taken along the line B-B of FIG. 2, and the outer rings of the roller bearings 522A and 522B are fixed to the housing 550 by a presser bar 524.

Returning to FIG. 1, a roller driving device 600 for driving the two rollers 520A and 520B will be described. The two rollers 520A and 520B are connected to drive shafts 630A and 630B by flexible shafts 620A and 620B, respectively. The shaft joints 625A and 625B are fixed to the flexible shafts 620A and 620B, respectively, and the roller side of the shaft joints 625A and 625B is configured to be detachably coupled to the rollers 520A and 520B, respectively. 620A and 620B are connected to rollers 520A and 520B, respectively, and torque is transmitted to the rollers 520A and 520B.

The drive shafts 630A and 630B are supported by the gearbox 640 via two gear bearings 641A and 642A and 641B and 642B, respectively, and the gears meshing with each other in the middle of the two gear bearings 641A and 642A and 641B and 642B, respectively. 643A and 643B are attached via spacers 644A and 645A and 644B and 645B.

Since only one set of the flexible shaft, the drive shaft, and the gear is visible in FIG. 1, the CC view of FIG. 1 is shown in FIG.
In FIG. 4, the drive shaft 630 </ b> A is coupled to the motor 651 via the speed reducer 650. The rotation and torque of the motor 651 are transmitted to the gear 643A on the drive shaft 630A side, and then the rotating direction is opposite to each other and the magnitude of the torque is increased by the meshing mechanism of the two gears 643A and 643B having the same diameter and number of teeth. The torque is divided into two equal torques and output from the drive shafts 630A and 630B to the flexible shafts 620A and 620B, respectively.

The drive shaft 630A and its gear bearing 642A may use the shaft of the speed reducer 650.

The flexible shafts 620A and 620B are passed through respective tubes of a parallel conduit 621 (not shown in FIG. 1) formed by integrally forming two tubes, and when the flexible shafts 620A and 620B are rotated by receiving the torque, It is designed not to be entangled with each other.

Returning to FIG. 1, the gear box 640 is placed on a fixed base 652 that does not affect the patient 1.

In FIG. 1, a sensor support attachment part 552 that connects a through-hole 551 that penetrates the suction pipe 300 and a terminal-side connection part 711 of the sensor support further to the base side of the rollers 520A and 520B of the casing 550. And a protective bag attaching portion 553 that fits the terminal side connection port 311 of the protective bag in an airtight manner.

The protective bag root side connection port 312 is hermetically bonded to the suction tube 300, and as the suction tube 300 is inserted and removed, the protection bag attachment part 553 approaches and moves away, and at the same time, the protection bag 310 shortens and extends. To do.

The detection unit 700 is fixed to the base side connection portion 712 of the sensor support. The sensor support 710 is made of one or a plurality of thin plates, keeps the distance between the housing 550 and the detection unit 700 constant, lowers the lateral rigidity, and reduces the weight to the patient 1. Is lightening.

The detection unit 700 is provided with a light emitting diode 701 and a light receiving phototransistor 705 facing each other with the suction tube 300 interposed therebetween, and detects the passage of the insertion limit mark 320 and the extraction limit mark 321 of the suction tube 300. . That is, the light receiving phototransistor 705 normally receives light from the light emitting diode 701 that has passed through the suction tube 300, but if the light is blocked by the insertion limit mark 320 or the extraction limit mark 321, the output of the light receiving phototransistor 705 is output. Therefore, the controller 800 detects the change and controls the operation of the motor 651.

The controller 800 (1) manual extraction switch 810 (drives the motor 651 in the direction of extracting the suction pipe 300 only while the manual extraction switch 810 is pressed, and stops the motor 651 when the manual extraction switch 810 is released), ( 2) Manual insertion switch 815 (motor 651 is driven in the direction to insert suction pipe 300 only while manual insertion switch 815 is pressed, and motor 651 stops when manual insertion switch 815 is released), (3) automatic suction痰 Switch 820 (When the automatic suction switch 820 is pressed, the suction pipe 300 is fed from its standby position in the insertion direction. When the insertion limit mark 320 passes through the detection unit 700, it stops once, and then the suction pipe 300 is reversed. At the same time, the on-off valve 1002 is opened to start suction, and when the extraction limit mark 321 passes the detection unit 700, the on-off valve 1002 is closed to stop the suction at the same time, and then the suction pipe again. 300 (4) Reset switch 830 (when the detection unit 700 is in the middle between the insertion limit mark 320 and the extraction limit mark 321) When the reset switch 830 is pressed, the closing of the on-off valve 1002 is confirmed, the suction pipe 300 is sent in the extraction direction, and once the extraction limit mark 321 passes through the detection unit 700, it is stopped, and then the suction pipe 300 is connected again. (5) Emergency stop switch 840 (Pressing the emergency stop switch 840 immediately closes the on-off valve 1002 and simultaneously sends it in the insertion direction. Stops the motor 651 and outputs an alarm output 850. Pressing the emergency stop switch 840 again stops the output of the alarm output 850, and then executes the same reset operation as when the reset switch 830 is pressed. Back to the machine state), and includes five types of switches.

The root end 302 of the suction pipe is connected to the relay pipe 330 via the connection pipe 305, the relay pipe 330 is further connected to the gas-liquid pipe 340 of the gas-liquid separation bottle 900, and the gas-liquid pipe 340 is further connected to the gas-liquid separation bottle. The gas-liquid separation liquid 901 in 900 is opened. On the other hand, a suction tube 1000 is connected to the other end of the gas-liquid separation bottle, and an end 1001 of the suction tube opens into the gas-liquid separation gas 902 in the gas-liquid separation bottle 900. The suction pipe 1000 is connected to a suction source 1010 through an on-off valve 1002. The stopper 910 of the gas-liquid separation bottle 900 has a gas-liquid pipe port 911 and a suction pipe port 912 for passing the gas-liquid pipe 340 and the suction pipe 1000, and is made of an elastic material having a tapered outer diameter. It is a closed stopper and shuts off the connection between the gas-liquid separation bottle and the outside air by a known method.

The suction source 1010 may be a large concentration suction source installed in a hospital, or may be a household or portable so-called sucker. When the suction device has an on-off valve, the on-off valve 1002 may use the on-off valve of the suction device.

In the first embodiment described above, as shown in FIG. 5, the suction pipe 300, the protective bag 310, and the suction pipe feed mechanism 500 (rollers 520A and 520B, the terminal side connection port 510 of the housing and the pin 511 are connected. Is manufactured as a single-piece assembly, and is sealed and supplied after sterilization. The unitary assembly is hereinafter referred to as a suction tube drive assembly 1100. Further, the multi-branch pipe 410 adapted to the suction pipe drive assembly 1100 has a longer service life than the suction pipe drive assembly, and any one of the parts to be discarded is supplied after being sterilized and sealed.

Next, the operation of this embodiment will be described.

When the patient 1 is attached with the tracheal cannula 200, the multi-branch tube 410 in which the second root side connection port 414 of the multi-branch tube is closed with a cap 416 (not shown) is connected to the tracheal cannula at the end side connection port 411. Connect to the root end 202 of

Next, the ventilation hose 413 of the ventilator 400 is connected to the first root side connection port 412 of the multi-branch pipe to perform ventilation by the ventilator.

Next, when the patient 1 is using the ventilator 400 and the suction source 1010 is not connected to the multi-branch tube 410, the multi-branch tube 410 is fitted with the suction tube drive assembly 1100, and the automatic suction is performed.待機 Set the standby state where work can be started, then repeat automatic suction work and return to standby state. Finally, remove the suction pipe drive assembly 1100 from the multi-branch pipe 410 and use only the ventilator 400 An example of a series of operations and operations until returning to the current state will be described.

When the patient 1 is using the ventilator 400 and the suction source 1010 is not connected to the multi-branch tube 410, the gas-liquid separation bottle 900 includes a gas-liquid tube 340 and a suction tube 1000, respectively. It is airtightly attached by a plug 910 through a mouth 911 and a suction pipe 912, and further, a relay pipe 330 and a connection pipe 305 are connected to the gas-liquid pipe 340, and the suction pipe 1000 is connected to a suction source 1010 via an on-off valve 1002. It is connected. The on-off valve 1002 is closed, and the second root side connection port 414 of the multi-branch pipe is closed by a cap 416 (not shown).

When the suction tube drive assembly 1100 is mounted from this state, it is mounted in the following procedure. First, (1) the suction tube drive assembly 1100 is removed from the hermetic bag, and (2) the root end 302 of the suction tube 300 is passed from the sensor support 710 side to the detector 700, and the insertion limit mark 320 is externally attached from the detector 700. The base end 302 is pulled out until it is pulled out, (3) the base end 302 of the suction pipe 300 is connected to the connection pipe 305, and (4) the terminal side connection portion 711 of the sensor support is connected to the sensor of the housing 550. It is attached to the support attachment part 552. Furthermore, (5) the shaft joints 625A and 625B of the flexible shafts 620A and 620B are connected to the rollers 520A and 520B, respectively. (6) The cap 416 is removed and the second root side connection port 414 of the multi-branch pipe is opened. (7) The suction pipe 300 is inserted from the end 301 of the suction pipe, and (8) the terminal-side connection port 510 of the housing is fitted to the second root-side connection port 414 of the multi-branch pipe. (9) The pin 511 is pushed in and hooked onto the flange 415 to be fixed.

Next, the manual extraction switch 810 and the manual insertion switch 815 are operated, or the suction pipe 300 is manually inserted / removed so that the detection unit 700 is positioned between the insertion limit mark 320 and the extraction limit mark 321.

Next, the reset switch 830 is pressed to set the suction pipe 300 to the standby position. The operation of the controller 800 after pressing the reset switch 830 is as follows: (1) First, confirm that the on-off valve 1002 is closed; (2) The extraction limit mark 321 of the suction pipe 300 reaches the detector 700. Then, the light from the light emitting diode 701 to the light receiving phototransistor 705 is blocked, and then the extraction limit mark 321 passes through the detection unit 700 and is absorbed in the extraction direction until the light from the light emitting diode 701 to the light receiving phototransistor 705 is not blocked again. Send 痰 管 300. (3) Immediately after the extraction limit mark 321 has passed the detection unit 700, the motor 651 is stopped. (4) Next, the suction pipe 300 is fed in the insertion direction, and the motor 651 is stopped immediately when the extraction limit mark 321 passes through the detection unit 700 again. With the above operation, the suction pipe 300 is set at the standby position.

In this state, the extraction limit mark 321 of the suction tube 300 is positioned on the distal end side of the detection unit 700, and the distal end 301 of the suction tube 300 is a desired position of the preset tracheal cannula 200, that is, the first branch of the multi-branch tube. It is set at a position that does not hinder ventilation by the ventilator 400 on the base side further than the base side connection port 412.

After the patient 1 or caregiver presses the automatic suction switch 820 of the controller 800, or after the monitor of the patient 1 detects the necessity of suction and instructs the controller 800 to start automatic suction, The operation is as follows. (1) First, the suction pipe 300 is driven in the insertion direction. (2) When the insertion limit mark 320 passes the detection unit 700, the motor 651 is immediately stopped. The insertion limit mark 320 passing through the detection unit 700 is detected by the same method as that for detecting the extraction limit mark 321 passing through the detection unit 700. Next, (3) the suction pipe 300 is driven in the extraction direction, and (4) the on-off valve 1002 is opened and suction is started. (5) The insertion limit mark 320 is detected to pass through the detection unit 700 by the above method. (6) Further, the suction pipe 300 is continuously driven in the extraction direction. (7) When the detection unit 700 is extracted and the limit mark 321 passes, the open / close valve 1002 is closed and (8) the motor 651 is stopped. (9) The suction pipe 300 is driven again in the insertion direction, and when the extraction limit mark 321 passes through the detection unit 700, the motor 651 is stopped and the standby state is restored. In this state, it waits for the next automatic sucking start command.

When the emergency stop switch 840 is pressed during a sudden change in the state of automatic suction, the controller 800 (1) immediately closes the on-off valve 1002, (2) stops the motor 651, and (3) outputs an alarm. 850 is output. The alarm output 850 can be used to sound a buzzer, flash an alarm lamp, or transmit an alarm to a remote caregiver. (3) The manual insertion switch 815 and the automatic suction switch 820 are disabled, so that the suction pipe 300 cannot be driven from the controller 800 in the insertion direction.

When the emergency stop switch 840 is pressed again, (1) the alarm is stopped, (2) the suction pipe 300 is set to the standby state by the same operation as when the reset switch 830 is pressed, (3) the manual insertion switch 815 And the automatic suction switch 820 can be operated.

When removing the automated suction device, (1) Confirm that the suction pipe 300 is in the standby position and the on-off valve 1002 is closed by visually or pressing the reset switch 830. (2) From the rollers 520A and 520B Remove the shaft joints 625A and 625B. (3) Pull out the pin 511 to disconnect the terminal end side connection port 510 of the housing from the second root side connection port 414 of the multi-branch pipe. (4) End of the suction pipe 300 301 is pulled out from the second root side connection hole 414 of the multi-branch pipe, (5) the second root side connection port 414 of the multi-branch pipe is closed with the cap 416, and (6) the root end 302 of the suction pipe is connected. Remove from the pipe 305, (7) Remove the sensor support attachment part 552 from the terminal support part 711 of the sensor support, (8) Pull out the root end 302 of the suction pipe from the detection part 700, and drive the suction pipe in the procedure Remove assembly 1100. This completes the removal of the automated sucker from the patient.

Dispose of suction tube drive assembly 1100 accordingly.

In the first embodiment described above, the secretion adhering to the inside of the root end 302 of the suction tube leaks and adheres to the detection unit 700 during the operation of the item (8) in the removal procedure of the automated suction device described above, There remains a possibility that it becomes an obstacle to repeated use of the detection unit 700.

Therefore, in the second embodiment, as shown in FIG. 6, an antifouling sleeve 720 is provided at a portion where the suction tube 300 penetrates the detection unit 700. In the above procedure (8), the antifouling sleeve 720 is provided at the root of the suction tube. By pulling out from the detection unit 700 together with the end 302, adhesion of secretions to the detection unit 700 was prevented.

In the first and second embodiments described above, the detection unit 700 can be used repeatedly, and the suction pipe drive assembly 1100 to be discarded every time is simplified. Step (2) of the suction tube drive assembly 1100 installation procedure “pass the root end 302 of the suction tube 300 from the sensor support 710 side to the detector 700, and the insertion limit mark 320 is removed from the detector 700 to the outside. Pull out the root end 302 until it comes out ”and the work of“ (4) “Attach the sensor support body terminal side connection portion 711 to the sensor support body attachment portion 552 of the housing 550” is necessary, and the installation work is complicated. become. In the first embodiment, the possibility of contact between the detection unit 700 and the secretion remains.

Therefore, in the third embodiment, as shown in FIG. 7, the suction tube 300, the detection unit 700, the sensor support 710, the protective bag 310, and the suction tube feed mechanism 500 (rollers 520A and 520B, the end side of the housing) (Including the connection port 510 and the pin 511) were manufactured as an integral assembly, and were sealed and supplied after sterilization. In short, a part in which the detection unit 700 and the sensor support 710 are further added to the suction pipe drive assembly of the first embodiment is manufactured as an integrated assembly.

This integrated assembly is hereinafter referred to as suction tube drive assembly type 2 1110.
In the attachment of the suction tube drive assembly 2 type 1110 in the third embodiment, the suction tube 300 is passed through the detection unit 700 and the position thereof is compared with the attachment of the suction tube drive assembly 1100 in the first embodiment. It is not necessary to make adjustments and to attach the terminal support connection part 711 of the sensor support to the sensor support attachment part 552 of the housing 550, and it is only necessary to connect the plug 703 from the controller 800 to the outlet 702. Further, since the detection unit 700 is discarded, it is not necessary to prevent the secretion from adhering to the detection unit 700.

In the first to third embodiments described above, when the large-diameter driving unit 523A or 523B that drives the suction pipe 300 comes into contact with the suction pipe 300 and gets wet with scissors, the friction between them decreases, If the suction pipe 300 is not sandwiched by force, the suction pipe 300 cannot be driven, and the cross section of the suction pipe 300 is reduced.

In the fourth embodiment, a plurality of needles are implanted on the outer circumferences of the large-diameter driving portions 523A and 523B, and the tip of the needles bites into the wall surface of the suction tube 300 when driven to rotate, thereby driving the suction tube 300. As a result, the suction pipe 300 can be reliably driven even when the suction pipe 300 is sandwiched with a small force.

It is an elevation view which shows the whole structure of the suction device of this invention. In the AA view (plan view) of the suction pipe feeding mechanism 500 in FIG. 1, the suction pipe 300 and the two rollers 520A driven between the two large diameter driving portions 523A and 523B and It is explanatory drawing which shows the state which has connected the shaft joints 625A and 625B of the flexible shaft 620A and 620B which drive this roller to 520B. A presser foot 524 for fixing the roller bearings 522A and 522B is shown in a BB view (side view) in FIG. FIG. 5 is an explanatory diagram of a torque division reverse rotation mechanism that equally divides torque from a motor 651 and outputs it to two flexible shafts 620A and 620B in a CC view (plan view) of the roller driving device 600 portion of FIG. FIG. 6 is an elevation view showing a configuration range of the suction pipe drive assembly 1100 in the first embodiment. It is an elevational view showing an attached state of the antifouling sleeve 720 in the detection unit 700 portion of the second embodiment. FIG. 10 is an elevation view showing a configuration range of a suction tube drive assembly 1110 in the third embodiment.

Explanation of symbols

1 patient
2 trachea
200 Tracheal cannula
201 End of tracheal cannula 202 End of tracheal cannula 300 Suction pipe 301 End of suction pipe 302 End of suction pipe 305 Connection pipe 310 Protection bag 311 Terminal side connection port of protection bag 312 Base side connection port of protection bag 320 Insertion limit mark 321 Extraction limit mark 330 Relay pipe 340 Gas-liquid pipe 400 Ventilator 410 Multi-branch pipe 411 Multi-branch pipe end side connection port 412 Multi-branch pipe first base side connection port 413 Ventilation hose 414 Multi-branch Pipe second base side connection port 415 Flange 416 Cap 500 Suction tube feed mechanism 510 Housing end side connection port 511 Pin 520A, 520B Roller 521A, 521B, 522A, 522B Roller bearing 523A, 523B Large diameter drive unit 524 Presser foot 550 Case 551 Through-hole 552 Sensor support attachment portion 553 Protective bag attachment Part 600 Roller drive device 620A, 620B Flexible shaft 621 Parallel conduit 625A, 625B Shaft joint 630A, 630B Drive shaft 640 Gear box 641A, 641B, 642A, 642B Gear bearing 643A, 643B Gear
644A, 644B, 645A, 645B Spacer 650 Reducer 651 Motor 652 Fixing base 700 Detection unit 701 Light emitting diode 702 Outlet 703 Plug 705 Light receiving phototransistor 710 Sensor support 711 Sensor support end side connection 712 Sensor support base side Connection unit 720 Antifouling sleeve 800 Controller 810 Manual extraction switch 815 Manual insertion switch 820 Automatic suction switch 830 Reset switch 840 Emergency stop switch 850 Alarm output 900 Gas-liquid separation bottle 901 Gas-liquid separation liquid 902 Gas-liquid separation gas 910 Plug 911 Gas-liquid tube port 912 Suction tube port 1000 Suction tube 1001 End of suction tube 1002 On-off valve 1010 Suction source
1100 Suction tube drive assembly 1110 Suction tube drive assembly type 2

Claims (9)

In a suction device that inserts a suction tube into a trachea and performs suction, the suction tube is passed between two rollers, and the two rollers are rotated in directions opposite to each other. A suction pipe feed mechanism characterized by being driven for insertion and extraction. In order to connect the rotary shaft of the drive source fixed to the fixed floor, the first flexible shaft connected to the rotary shaft, and the first flexible shaft to one of the two rollers according to the first aspect. A first shaft system comprising a first shaft joint provided at the tip of one flexible shaft, a first gear fixed to the rotating shaft of the drive source, and a first gear having the same diameter and the same number of teeth. A torque division reverse rotation mechanism comprising two gears, a second rotating shaft fixed to the second gear, a second flexible shaft connected to the second rotating shaft, and the second flexible shaft. And a second shaft system comprising a second shaft joint provided at the tip of the second flexible shaft for connecting to the other of the two rollers according to the first item. Roller drive device. A marker provided on the suction tube that is always present outside the tracheal cannula, separated in the axial direction, a detection unit that detects the passage of the marker, and the detection unit is fixed to the suction tube feeding mechanism. A suction tube position detecting device comprising a sensor support for supporting at a relative position. A suction tube drive control device that controls insertion and extraction of a suction tube based on a passage signal of a sign detected by the suction tube position detection device according to claim 3. A terminal support port connected to the connection port with the suction device of the multi-branch pipe having a connection port with the tracheal cannula, the ventilator, and the suction device, and a sensor support material connecting the sensor support body according to claim 3 The suction pipe feeding mechanism according to claim 1 having a mounting part, a protective bag mounting part, and a suction pipe through-hole at its root end, and the end of the suction pipe feeding mechanism passing between the two rollers A suction pipe whose position is adjusted so as to be located in the terminal side connection port or a position protruding from the outlet thereof, and a terminal end of the suction bag mounting portion are airtightly connected and a root end is airtightly connected to the suction pipe. Suction tube drive assembly characterized by comprising a protective bag. A suction pipe drive assembly comprising the suction pipe position detecting device according to claim 3 and the suction pipe drive assembly according to claim 5. A suction device in which a root end of a suction pipe is connected to a gas-liquid pipe of a gas-liquid separator and a suction pipe of the gas-liquid separator is connected to a suction source, the suction pipe and the suction source of the gas-liquid separator A suction device characterized by having an on-off valve in between. The suction pipe drive control device according to claim 4, wherein the suction pipe drive control apparatus has a function of opening the on-off valve according to claim 7 only at the time of extracting the suction pipe. A suction device that is attached to a tracheal cannula together with a ventilator and sucks and removes sputum, the suction tube drive assembly according to claim 5, the roller drive device according to claim 2, and the suction device according to claim 3. A suction device comprising: a tube position detection device; a suction device according to item 7; and a suction tube drive control device according to item 8.

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