KR101910879B1 - Compressing and volume reducing apparatus for infectious waste - Google Patents

Abstract

An object of the present invention is to provide an apparatus for compressing and screening infectious waste which can reliably prevent infectious substances from being released to the outside when compressing and decompressing infectious waste such as medical waste.
The present invention relates to a compression ignition device (1) for compression-sensitizing an infectious waste (W) injected into a container (2) by a compression bar (4) W sterilizing apparatus for sterilizing an infectious substance emitted from a sterilizing apparatus (8, 14) for sterilizing an infectious substance emitted from a sterilizing apparatus such as a sterilizing apparatus, a sterilizing apparatus for discharging and plasma irradiation, Or a combination of two or more mechanisms.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a compressing and humidifying device for infectious waste,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for compression and sensitization of infectious waste, and more particularly to an infectious material containing infectious bacteria, fungi, viruses, etc., Quot; infectious substance ") is prevented from being released to the outside.

Currently, medical wastes generated in medical institutions are housed in containers such as drums and cans in medical institutions and then transported to metal melting facilities or incineration facilities to melt or incinerate individual containers.

However, textile products such as surgical wraps, gauze, bandages, etc., have a problem in that they are bulky and have a high transportation cost.

In order to cope with this problem, the patent applicant of the present invention first proposes a device for heating and disinfecting medical waste, which is capable of compressing and conveying medical waste and transporting it (see, for example, Patent Documents 1 and 2).

The heat sterilizing apparatus includes a heat sterilizer having a pressure vessel for containing medical waste, a pressurizing unit for pressurizing the inside of the pressure vessel, and a microwave oscillator for microwave heating the medical waste, The medical waste is heated and sterilized at the site where the medical waste is generated.

The heating and sterilizing apparatus has a great advantage that the medical waste can be rapidly heated and sterilized and the medical waste can be compression-sensitized.

Patent Document 1: JP-A-2006-204374 Patent Document 2: JP-A-2008-93231

The present invention relates to an infectious waste which is capable of reliably preventing the infectious substance from being released to the outside when the infectious waste such as medical waste is compression-sensitized by further improving the apparatus for heating and sterilizing the medical waste proposed by the applicant of the present invention And an object of the present invention is to provide a compression and ignition device for a compressor.

In order to achieve the above object, the compression and ignition device for infectious waste according to the present invention is a device for compressing and sensitizing infectious wastes inputted into a container by means of a compressing device which is lifted by an elevating device, Sterilizing apparatus for sterilizing infectious substance, sterilizing apparatus for irradiating sterilizing radiation, sterilizing apparatus for sterilizing radiation, sterilizing apparatus for irradiating plasma, sterilizing apparatus for sterilizing X-ray, sterilizing apparatus for sterilizing heat, and apparatus for sterilizing photocatalyst, .

In this case, a sterilizing device for sterilizing the sterilizing device in the container, a suction gas sterilizing device for sterilizing the gas sucked by the suction device for sucking the gas in the container and keeping the inside of the container at negative pressure, And a sterilizing mechanism for sterilizing the gas in the cover covering the main body of the compression ignition device.

Further, the elevator mechanism may be provided with a control mechanism for compression-sensitizing the infectious waste put into the container while repeating the drop and stop of the compression chamber.

In addition, the infectious waste can be put into a container which is not shrinkable and is put into the container.

Further, the first elevating mechanism is disposed on the pedestal, the first elevating mechanism is mounted on the lid member to raise and lower the lid member, the second elevator mechanism disposed on the lid member is mounted on the compression unit, .

Further, the elevating mechanism is disposed on the pedestal, the elevating mechanism is mounted on the compression bar to raise and lower the compression bar, and the lid member provided on the upper side of the compression bar is guided in the elevating mechanism so as to be able to ascend and descend, To act on the compression half.

According to the compression ignition apparatus for infectious waste of the present invention, the infectious waste introduced into the container is compression-sensitized by a compression unit that is raised and lowered by an elevator mechanism. The sterilizing apparatus for sterilizing is provided with a sterilizing apparatus for irradiating sterilizing instrument, a sterilizing apparatus for discharging / plasma irradiating sterilizing apparatus, a radiating X-ray sterilizing apparatus, a thermal sterilizing apparatus and a photocatalyst sterilizing apparatus or a combination of two or more mechanisms. It is possible to reduce the processing cost of the infectious waste including the transportation cost by enjoying the advantages of the apparatus for heating and disinfecting the medical waste proposed by the applicant of the present invention, (A) blocking of the opening of the container by the lid member, (b) By using a sterile mechanism corresponding to the type of sex waste can be surely prevented that the infectious material is discharged to the outside, without adversely affecting the working environment, it is possible to securely wind the pupation compression infectious waste.

In addition, the disinfection mechanism does not require the use of a disinfectant such as ethyl alcohol, sodium hypochlorite aqueous solution or the like, which is sprayed into the container, or the use amount thereof can be reduced.

In addition, a sterilizing device for sterilizing the sterilizing device in the container, a suction gas sterilizing device for sterilizing the gas sucked by the suction device for sucking the gas in the container and holding the inside of the container at a negative pressure, It is possible to perform a sterilization treatment corresponding to the kind of the infectious waste or the like by using any one or a plurality of sterilizing mechanisms for sterilizing the gas in the visor.

Further, since the elevating mechanism includes a control mechanism for compression-sensitizing the infectious waste put into the container while repeating the dropping and stopping of the compression chamber, when the infectious waste is compression-sensitized, the bag containing the infectious waste expands locally at one time and ruptures , It is possible to reliably prevent the infectious waste from being scattered by the impact.

In addition, the infectious waste is put into a bag which is not shrinkable and put into the container, whereby the bag is locally expanded and ruptured, and the infectious waste can be reliably prevented from being scattered by the impact.

Further, the first elevating mechanism is disposed on the pedestal, the first elevating mechanism is mounted on the lid member to raise and lower the lid member, the second elevator mechanism disposed on the lid member is mounted on the compression unit, The entire height of the compression ignition device can be suppressed to a low level, so that the compression ignition device can be used in a place where there is limitation in transportation or height direction.

Further, the elevating mechanism is disposed on the pedestal, the elevating mechanism is mounted on the compression bar to raise and lower the compression bar, and the lid member provided on the upper side of the compression bar is guided in the elevating mechanism so as to be able to ascend and descend, The compression unit and the lid member can be lifted and lowered by one elevator mechanism, thereby simplifying the apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram showing an apparatus for compressing and screening infectious waste according to the present invention. FIG.
2 is a side view showing an embodiment of an apparatus for compressing and sensitizing infectious waste according to the present invention.
Fig. 3 is an enlarged view of a part of the cut-away end face of the compression ignition device of the copper infectious waste.
4 is a front view for explaining the operation of the compressing and sensitizing device for copper infectious waste, in which (a) shows a state in which waste is put in, (b) in a state in which the lid is lowered to block the container, The compression zone is lowered and the waste is compressed and reduced.
5 is a side view showing another embodiment of an apparatus for compressing and sensitizing infectious waste according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an apparatus for compressing and sensitizing infectious waste according to the present invention will be described with reference to the drawings.

Fig. 1 is a conceptual diagram of an apparatus for compressing and screening infectious waste according to the present invention.

The apparatus 1 for compressing and fusing infectious waste comprises a container 2 for containing the infectious waste W, a lid member 3 for enclosing the opening of the container 2, A disinfectant sprayer 6 for spraying a disinfectant into the container 2 as a device for introducing the waste water into the container 2; A suction device 7 for sterilizing the gas sucked by the suction device 7, a suction device 7 for sterilizing the suction device 7 for sterilizing the suction device 7, A cooling mechanism 9 for cooling the sterilized gas and an adsorption and deodorization mechanism 10 for adsorbing and deodorizing odorous components contained in the gas cooled in the cooling mechanism 9, So that the gas can be released to the atmosphere.

In this case, a container made of metal such as a general drum can used as a container for accommodating infectious waste, or a container made of synthetic resin can be widely used in the container 2 containing the infectious waste W.

The lid member 3 is not particularly limited as long as it can substantially block the opening of the container 2. The lid member 3 may be made of metal Can suitably be used.

Further, the compression bar 4 may suitably be made of a material of a metal material having a required strength (rigidity).

A general elevating mechanism such as a hydraulic cylinder can be widely used as the elevating mechanism 5. [

In this case, a control mechanism (not shown) for intermittently compressing and expelling the infectious waste W put into the container 2 while repeating the descent and stop of the compression bar 4 ).

As a result, when the infectious waste W is compressed and smashed, the bag into which the infectious waste W is put is locally swollen and ruptured at once to reliably prevent the infectious material from being scattered by the impact.

A bag made of a synthetic resin can be used for the bag into which the infectious waste W is put, but it is preferable to use a non-shrinkable bag such as a paper bag made of general purpose such as kraft paper or a bag made of a thin synthetic resin.

As a result, infectious waste W is put into the bag and put into the container 2, so that the bag is locally inflated and ruptured, and the infectious material is surely prevented from being scattered by the impact.

Particularly, by using a bag made of paper, the paper bag is wetted by the disinfectant sprayed into the container by the disinfectant spray device 6, whereby the bag is locally expanded and ruptured, It can be surely prevented.

When a shrinkable bag such as a thick synthetic resin bag is used, the bag is locally inflated and ruptured, and a suitable portion of the compression bar 4, which abuts against the bag to prevent the infectious material from splashing, For example, a cutting edge (not shown) may be provided on the circumferential surface or the lower surface to break the bag to form air leakage holes.

The spray nozzle of the disinfectant spray device 6 for spraying the disinfectant liquid into the container 2 as the in-container sterilizing device is disposed in the lid member 3 in the present embodiment.

Then, the disinfectant liquid is sprayed from the tank T through the injection pump P into the container 2 at the injection nozzle.

A general disinfectant such as ethyl alcohol or sodium hypochlorite aqueous solution corresponding to the infectious waste W can be widely used as the disinfectant sprayed into the container 2 from the disinfectant sprayer 6.

The sterilizing device in the container is provided with a disinfectant spraying device 6 for spraying a disinfectant in the container 2 or a disinfecting device for disinfecting sterilization using a UV lamp or a xenon lamp instead of the disinfectant spray device 6 A sterilizing device such as a discharge / plasma irradiation sterilizing device such as a sterilizer (manufactured by Daikin Industries Ltd.), a thermal sterilizing device such as a soft X-ray sterilizing device, a spot heater, and a photocatalyst sterilizing device or a sterilizing device combining two or more mechanisms 14) can be used.

This makes it possible to reliably prevent the infectious substance from being released to the outside by using the in-container sterilizing mechanism corresponding to the kind of the infectious waste, etc., and to safely compress and screen the infectious waste without adversely affecting the working environment .

The disinfecting device 6 for spraying the disinfectant into the container 2 by using the sterilizing device 14 in the container sterilization device 14 and the other sterilization device in the container are used in combination, , An aqueous solution of sodium hypochlorite, and the like, or the use amount thereof can be reduced.

A universal suction device such as a ring blower can be widely used as the suction mechanism 7 for sucking the gas in the container 2 and holding the inside of the container 2 at a negative pressure.

As the suction gas sterilizing device 8 for sterilizing the sucked gas, a general thermal sterilizing device such as a spot heater (preferably capable of heating up to about 800 DEG C) can be widely used.

In addition to the thermal sterilization apparatus described above, the suction gas sterilizing apparatus 8 may include a sterilizing apparatus for sterilizing and sterilizing a sterilizer using a UV lamp, a xenon lamp, etc., a discharge and plasma sterilizing apparatus such as a streamer discharging apparatus (manufactured by Daikin Industries) A sterilizing mechanism that combines any one of mechanisms and photocatalytic sterilizing mechanisms or a combination of two or more mechanisms can be used.

This makes it possible to reliably sterilize microorganisms such as infantible microbes which are difficult to be sterilized by the disinfectant liquid sprayed into the container 2 from the disinfectant liquid spraying device 6.

A general suction device including an air cooling device such as a cooling fin disposed in a pipe through which gas flows can be widely used as the cold machine 9 for cooling the pasteurized gas in the suction gas sterilizing mechanism 8.

The adsorption / deodorization mechanism 10 for adsorbing and deodorizing the odor components contained in the gas cooled in the cooling mechanism 9 can be a general-purpose adsorption deodorizer such as activated carbon, magnesium hydrate (trade name "SEPIO").

Hereinafter, a method of using the compressing and sensitizing apparatus 1 for the infectious waste will be described.

[Design Criteria]

The design criteria (example) of the compression and ignition device 1 of this infectious waste are as follows.

(1) Disinfectant The spray amount of the disinfectant (ethyl alcohol) (70%) sprayed into the container 2 from the disinfecting device 6 is set to 150 mL / min per one spray nozzle of the disinfectant spray device 6 do.

(2) While the disinfectant solution was sprayed, the maximum suction amount of the gas by the suction mechanism 7 was set to 360 L so as to maintain the inside of the container 2 (using a drum can having a diameter of 580 mm and a height of 870 mm and a capacity of about 220 L) / min < / RTI >

(3) A spot heater is used as the suction gas sterilizing device 8 for sterilizing the aspirated gas at high temperature, and the outlet temperature at the maximum suction amount is set at 420 deg.

Next, a basic operation (example) of the compression and ignition device 1 for infectious waste will be described.

(1) The container (2) is installed in the compression and ignition device (1) for infectious waste, and the infectious waste (W) contained in the paper bag is introduced.

In this case, as the suction gas sterilizing mechanism 8 for sterilizing the sucked gas at high temperature, the compression sensitization operation is not started until the spot heater reaches the set temperature.

(2) The lid member 3 is lowered, and the opening of the container 2 is sealed. And the suction amount of the gas by the suction mechanism 7 is set to 180 L / min.

(3) While the disinfectant is sprayed for 20 seconds in this state, the gas in the container 2 is sucked by the suction mechanism 7.

The spray amount of the disinfectant during this period was set to 300 mL / min in total by using two spray nozzles of 150 mL / min, and the suction amount of the gas was set to 360 mL / min.

(4) Thereafter, the infectious waste W put in the container 2 is intermittently compressed and sensitized while the compressor 4 is lowered and stopped repeatedly (momentarily moving) by the lifting mechanism 5.

The instantaneous motion is set in 2 cm increments, and the descending speed of the compression bar 4 at that time is set to about 2 cm / sec and the stopping time is set to 1.5 seconds. The descent of the compression bar 4 is set so that a pressure switch (not shown) operates and stops when the pressure of the compression bar 4 reaches 8 t. Therefore, it takes about 60 seconds to descend 450 mm. However, the compression unit 4 is set to stop at a position 350 mm from the bottom surface of the container 2 even if the stopping pressure of the compression unit 4 is not reached.

During this time, the spray amount of the disinfectant solution was 150 mL / min by using one spray nozzle of 150 mL / min, and the suction amount of the gas was set to 360 L / min.

(5) The state in which the compression unit 4 is stopped is held for 1 minute.

During this time, the spraying of the disinfectant is stopped, but the suction amount of the gas is set to 360 L / min.

(6) The compression platen 4 is lifted up, and the compression platen 4 is stopped at the time when it has risen to the position of the lid member 3.

The rising speed of the compression bar 4 is set at 4.5 cm / sec, and it rises to the position of the lid member 3 in about 10 seconds.

The spray amount of the disinfectant during this period was set to 300 mL / min by using two spray nozzles of 150 mL / min, and the suction amount of the gas was set to 360 L / min.

(7) The compression bar 4 is raised to the position of the lid member 3, and the state is maintained for one minute.

During this time, the spraying of the disinfectant is stopped, but the suction amount of the gas is set to 360 L / min.

(8) After the compression bar 4 is raised to the position of the lid member 3, the lid member 3 is raised from the container 2 by about 10 mm and stopped. The rising speed at this time is set to about 4.5 cm / sec.

(9) Raise the lid member 3 about 10 mm from the container 2, and hold it for 2 minutes.

During this time, the spraying of the disinfectant is stopped, but the suction amount of the gas is set to 360 L / min.

(10) The cover member 3 is raised to a predetermined height position (for example, 400 mm) at which new infectious waste W can be introduced together with the compression bar 4.

During this time, the spraying of the disinfectant is stopped, but the suction amount of the gas is set to 360 L / min.

The lid member 3 is lifted to a predetermined height position to stop, the spraying of the disinfectant liquid and the suction of the gas are stopped, and one process is terminated.

Further, the processes (1) to (10) can be performed by an automatic operation by a control mechanism (not shown).

(11) When the new infectious waste W is to be introduced, the above steps (1) to (10) are repeated.

(12) When all the processes are completed, the dedicated lid of the container 2 is manually covered, the container 2 is sealed, and the same is transported to a metal melting facility, for example, .

Further, the same treatment can also be performed when the sterilizing mechanism 14 is used in the suction gas sterilization mechanism 8 or the in-container sterilization mechanism.

The action and effect of the compression-ignition device 1 of the infectious waste are as follows.

Since the infectious waste W can be transported and processed by compressing and decompressing it, it is possible to reduce the processing cost of the infectious waste W including the transportation waste.

When the infectious waste W is compression-sensitized, (a) the containment of the opening of the container 2 by the lid member 3, (b) the disinfection by the disinfectant sprayer 6 into the container 2, Disinfecting and humidifying the container 2 by spraying the disinfectant solution; (c) maintaining the negative pressure in the container 2 by sucking the gas in the container 2 by the suction mechanism 7; (d) (E) adsorption / deodorization of odorous components contained in the gas drawn by the suction mechanism 7 by the adsorption / deodorization mechanism 10, ( f) By using the suction gas sterilizing device 8 and the sterilizing devices 14 and 15, the sterilizing treatment corresponding to the type of the infectious waste can be performed to surely prevent the infectious substance from being released to the outside, The infectious waste W can be safely compressed and sensitized without adversely affecting it.

The apparatus further comprises a cold knife mouth (9) for sucking from the container (2) and cooling the hot pasteurized gas in the suction gas sterilization mechanism (8), and the gas cooled by the cooling mechanism (9) It is possible to sufficiently exert the function of the adsorbing and deodorizing agent used in the adsorption deodorization mechanism and to further reduce the influence on the working environment.

It is also possible to prevent scattering of the infectious substance when the container 2 containing the infectious waste W is melted by spraying the disinfectant liquid into the container 2 by the disinfectant sprayer 6, It can be anticipated to have a side effect of being able to handle it safely.

The use of the disinfectant such as ethyl alcohol, sodium hypochlorite aqueous solution or the like sprayed into the container 2 is not required or the use amount can be reduced by providing the suction gas sterilizing device 8 and the sterilizing devices 14 and 15.

In addition, since the elevator mechanism 5 is provided with a control mechanism for compressing and sensitizing the infectious waste W put into the container 2 while repeating the lowering and stopping of the compression bar 4 (instantaneous movement), the infectious waste W, the bag containing the infectious waste W is locally swollen and ruptured at one time, and the infectious material can be surely prevented from being scattered by the impact.

In addition, the infectious waste W is put into a bag made of paper and put into the container 2, so that the paper bag is wetted by the disinfectant sprayed into the container by the disinfectant sprayer 6, so that the bag is locally expanded It is possible to reliably prevent the infectious material from being scattered by the impact.

Next, Fig. 2 to Fig. 4 show one specific embodiment of a compression and ignition device for infectious waste.

The compressing and humidifying device 1 for infectious waste is provided with a first elevating mechanism 5A as an elevating mechanism 5 on a pedestal 11 of the compression and ignition device 1 and the first elevating mechanism 5A, The lid member 3 is mounted on the lid member 3 and the second lift mechanism 5B disposed on the lid member 3 is mounted on the compression bar 4 to lift the compression bar 4 .

As a result, the entire height of the compression ignition device 1 can be suppressed to a low level, so that the compression ignition device 1 can be used at installation sites having limitations in transportation and height direction.

Fig. 5 shows another specific embodiment of an apparatus for compressing and fusing infectious waste.

The compression and ignition device 1 of the infectious waste is provided with an elevating mechanism 5 on a pedestal 11 and mounting the elevating mechanism 5 on the compression bar 4 to raise and lower the compression bar 4 The lid member 3 provided on the upper side of the compression bar 4 is guided to the elevating mechanism 5 so as to be able to ascend and descend in a predetermined range So that the member (3) is driven to the compression unit (4).

As a result, the lifting and lowering of the compression bar 4 and the lid member 3 can be performed by one elevating mechanism 5, thereby simplifying the apparatus.

In this case, the guide member 13a provided on the pedestal 11 guides the guide rod 13b erected on the lid member 3 so that the lid member 3 stably ascends and descends.

Further, since the stroke of the lifting and lowering of the lifting mechanism 5 becomes longer and the height of the entire compression and toning device 1 becomes higher, when the compression and sensitization hood 1 is transported, as shown by the chain double- It is preferable to configure the motor 5 so as to be capable of swinging by 90 °.

The constitution and operation of the compression-sensitization apparatus 1 of the absorbent waste shown in Figs. 2 to 4 and Fig. 5 are the same as those of the apparatus 1 for compressing and infecting the infectious waste shown in Fig.

In addition, the compression and encapsulation device 1 of the infectious waste need not necessarily be used, but may be used in a state covered with a film or cloth-covered cover 12 as shown by the dashed line in Fig.

2, the compression ignition device 1 is preferably provided with a cover 12 covering the compression ignition device 1 to more reliably prevent the release of the releasable substance to the outside .

A sterilizing mechanism for sterilizing the gas in the visor 12 can be provided.

In this case, as the sterilizing mechanism 15 for sterilizing the gas in the visor 12, a disinfecting device such as a sterilizing radiation irradiation sterilizing device using an ultraviolet lamp, a xenon lamp, etc., a discharge / plasma irradiation sterilizing device such as a streamer discharging device , A heat sterilizing mechanism such as a soft X-ray sterilizing mechanism, a spot heater, and a photocatalytic sterilizing mechanism, or a sterilizing mechanism combining two or more mechanisms can be used.

In addition to the sterilizing device 15 for sterilizing the gas in the syringe 12, an air outlet for discharging the gas passed through the adsorption / deodorization mechanism 10 to the atmosphere is opened in the syringe 12, A ventilation device having a HEPA filter or the like for keeping it clean is arranged.

Although the compressing and humidifying device for infectious waste of the present invention has been described above with reference to the embodiments thereof, the present invention is not limited to the configurations described in the above embodiments, and the configuration thereof may be appropriately changed You can.

The compressing and humidifying device for infectious waste according to the present invention can be suitably used for the treatment of infectious waste such as medical waste since the infectious waste can be surely prevented from being released to the outside when the infectious waste is compressed and smashed .

1: Compression screening device for infectious waste
2: container 3: cover member
4: compression unit 5: lift unit
6: Disinfectant sprayer (sterilizer in container)
7: Aspiration device 8: Aspiration device
9: cooling mechanism 10: adsorption deodorization mechanism
11: Base 12: Cover
14: Sterilization mechanism 15: Sterilization mechanism
W: Infectious waste

Claims (6)

A compression ignition device for compressing and sensitizing an infectious waste put into a container by a compressing device which is lifted by an elevating device,
As a sterilizing device for sterilizing infectious substances emitted from infectious waste, it is possible to use sterilizing apparatus for sterilizing sterilization, sterilizing apparatus for discharging, plasma sterilizing, soft X-ray sterilization, heat sterilization and photocatalytic sterilization, A suction device sterilizing device for sterilizing the gas sucked by the suction device for sucking the gas in the container and holding the inside of the container under negative pressure, As a sterilizing device for sterilizing the gas in the covering,
The container for infectious waste is compressed by the descent and descent of the compression bar provided with the blade for forming the hole through which the air lift passage is formed and the stopper for reducing the local expansion due to the compressed bag is repeated, And a control mechanism for compressing and sensitizing the infectious waste put into the apparatus for compressing and infecting infectious waste. delete delete The method according to claim 1,
Characterized in that the infectious waste is put into a bag without shrinkage and put into the container. The method according to claim 1 or 4,
The first elevating mechanism is disposed on the pedestal, the first elevating mechanism is attached to the lid member to raise and lower the lid member, and the second elevator mechanism disposed on the lid member is mounted on the compression barrel to raise and lower the compression barrel Wherein the compressing and encapsulating device is a compressing and screening device for infectious waste. The method according to claim 1 or 4,
The lifting mechanism is placed on the pedestal, the lifting mechanism is mounted on the compression platen to raise and lower the compression platen, and the lid member provided on the upper side of the compression platen is guided by the lifting mechanism so as to be able to ascend and descend, Wherein the device is adapted to operate in a semi-continuous mode.

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