Hospital infection protection, cleaning and disinfection device for examining table of obstetrics and gynecology department

Abstract

The hospital infection protection cleaning and disinfecting device comprises a cleaning and disinfecting machine, a handheld cleaner is arranged on the cleaning and disinfecting machine, a circular groove is formed in the bottom of the handheld cleaner, and a crack opening part is rotationally connected to the inner wall of the circular groove; an air exhaust groove and an air exhaust groove are formed in the handheld cleaner, a liquid storage groove is formed in the handheld cleaner, the liquid storage groove supplies disinfectant to the crack opening part, and a wiping cotton layer is installed on the side wall of the crack opening part; the slit opening part is inserted into the slit of the examination bed of the obstetrics and gynecology department, so that two opening areas are formed in the slit in the forward and backward advancing direction of the slit opening part, and the slit of the examination bed of the obstetrics and gynecology department can be conveniently cleaned, disinfected and timely dried by the exhaust groove, the air exhaust groove and the slit opening part; a medical worker only needs to control the handheld cleaner to move along the gap of the examination bed of the obstetrics and gynecology department, so that the difficulty of cleaning and disinfection is simplified, and impurities and garbage clamped in the gap can be effectively cleaned out.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a hospital infection protection, cleaning and disinfection device for a gynecological examination bed. Background Art

[0002] Gynecological examination beds play an important role in gynecological examinations, prenatal examinations, delivery preparations, and postpartum recovery. Doctors can use them to more conveniently perform gynecological internal examinations, ultrasound examinations, fetal heart rate monitoring, and other operations. The examination bed needs to be cleaned and disinfected before and after use. Usually, physical cleaning (such as scrubbing and wiping) and chemical disinfection (such as spraying disinfectants) are combined to spray the disinfectant evenly on the surface of the examination bed through a nozzle or sprayer to achieve the purpose of cleaning and disinfection. However, in order to achieve the functions of angle adjustment and folding of different parts of the examination bed, there needs to be a certain amount of activity space between the components, thus forming gaps. While these gaps provide certain functions and conveniences, they also bring problems such as increased difficulty in cleaning. The gaps are usually narrow, and ordinary cleaning tools are difficult to reach into them. It is impossible to effectively clean out the impurities and garbage caught in the gaps. After cleaning, there may be residual moisture in the gaps, creating conditions for bacterial growth and increasing the difficulty of cleaning next time. To this end, we propose a hospital infection protection cleaning and disinfection device for gynecological examination beds. Summary of the invention

[0003] The main purpose of the present invention is to provide a hospital infection protection cleaning and disinfection device for a gynecological examination bed.

[0004] To achieve the above object, the technical solution adopted by the present invention is: A hospital infection protection cleaning and disinfection device for an obstetrics and gynecology examination bed comprises a cleaning and disinfection machine, wherein a handheld cleaner is arranged on the cleaning and disinfection machine, a circular groove is arranged at the bottom of the handheld cleaner, a clamping opening portion is rotatably connected to the inner wall of the circular groove, an exhaust groove and an air suction groove are arranged in the handheld cleaner, the clamping opening portion is located between the exhaust groove and the air suction groove, a liquid storage tank is arranged in the handheld cleaner, the liquid storage tank supplies disinfectant to the clamping opening portion, a wiping cotton layer is installed on the side wall of the clamping opening portion, and the wiping cotton layer is slidable The handheld cleaner is movably connected to the inner wall of the circular groove, a rotation sensor unit for monitoring the rotation of the gap expansion portion is installed in the circular groove, a connecting component is arranged between the cleaning and disinfecting machine and the handheld cleaner, the connecting component comprises an airflow duct and two Y-shaped connecting pipes, the Y-shaped connecting pipe is fixedly connected to one end of the airflow duct, one of the Y-shaped connecting pipes is installed on one side of the handheld cleaner, two ends of the Y-shaped connecting pipe are respectively connected to the exhaust groove and the suction groove, and the other Y-shaped connecting pipe is installed on one side of the cleaning and disinfecting machine.

[0005] A further improvement of the present invention is that a clearance hole is provided on the handheld cleaner, a control switch for controlling the release of liquid inside the liquid storage tank is installed on the inner wall of the clearance hole, a button cover for replenishing liquid inside the liquid storage tank is threadedly connected to one side of the handheld cleaner, a plurality of drainage holes are provided between the liquid storage tank and the circular groove, solenoid valves are installed in the drainage holes, and the control switch controls the opening and closing of the plurality of solenoid valves.

[0006] A further improvement of the present invention is that two transparent observation windows are installed on one side of the handheld cleaner, both of which correspond to the positions of the liquid storage tank, and two scale lines are set on one side of the handheld cleaner, which correspond to the positions of the transparent observation windows.

[0007] A further improvement of the present invention is that four ventilation gaps are opened and closed at the bottom of the handheld cleaner, and the ventilation gaps are located between the circular groove and the exhaust groove or the suction groove.

[0008] A further improvement of the present invention is that two airflow cavities are arranged in the airflow duct, the airflow cavities are connected with the spaces of the corresponding ends of the two Y-shaped connecting tubes, and the internal spaces of the two airflow cavities are not connected.

[0009] A further improvement of the present invention is that a hospital infection protection cleaning and disinfection device for a gynecological examination bed comprises the following steps: S1. The cleaning and disinfecting machine transmits the extraction force and the blowing force into the exhaust slot and the exhaust slot through the air flow duct and the Y-shaped connecting pipe. The gap expansion part is inserted into the gap of the obstetrics and gynecology examination bed so that the gap can be opened. The impurities in the corresponding expansion area are extracted through the exhaust slot. The gap expansion part drives the wiping cotton layer to wipe and clean the gap of the obstetrics and gynecology examination bed evenly. The exhaust slot conducts the hot air flow into the corresponding expansion area so that the hot air can dry the gap of the obstetrics and gynecology examination bed after wiping, cleaning and disinfection. As the handheld cleaner continues to slide along the gap of the obstetrics and gynecology examination bed, the gap of the obstetrics and gynecology examination bed can be removed, wiped and disinfected simultaneously; S2. The medical staff holds the handheld cleaner through the perforation and squeezes the control switch to open the valves in the drainage holes, so that the disinfectant in the reservoir can be applied to the wiping cotton layer through the drainage holes, and the wiping cotton layer can carry the disinfectant to wipe and disinfect the gaps of the gynecological examination bed; S3. The negative pressure machine and the hot air blower inside the cleaning and disinfection machine apply the suction force and the blowing force to the two air chambers through the Y-shaped connecting pipe. The two air chambers separately conduct the suction force and the blowing force generated by the negative pressure machine and the hot air blower into the Y-shaped connecting pipe on one side of the handheld cleaner. The double chambers of the Y-shaped connecting pipe are respectively butted with the two air chambers to prevent the suction force and the blowing force generated by the negative pressure machine and the hot air blower from interfering with each other. Moreover, the Y-shaped connecting pipe conducts the suction force and the blowing force into the exhaust groove and the air extraction groove, and the exhaust groove and the air extraction groove perform impurity removal and drying operations on the front and rear areas of the gap opened by the gap opening part.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: By inserting the gap opening part into the gap of the obstetrics and gynecology examination bed, two opened areas are formed in the gap in the front and rear directions of the movement of the gap opening part, which is convenient for the exhaust groove, the air extraction groove and the gap opening part to clean, disinfect and dry the gap of the obstetrics and gynecology examination bed in time. The medical staff only need to control the handheld cleaner to move along the gap of the obstetrics and gynecology examination bed to complete the operation, which simplifies the difficulty of cleaning and disinfection, can effectively clean out the impurity garbage clamped in the gap, and after cleaning and disinfection, the gap is dried in time to reduce the residual moisture, reduce the bacteria breeding, and further reduce the difficulty of the next cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structure schematic diagram of an in-hospital infection prevention, cleaning and disinfection device for an obstetrics and gynecology examination bed according to the present invention.

[0012] Figure 2 It is a three-dimensional enlarged structure schematic diagram of the handheld cleaner and the connecting component in an in-hospital infection prevention, cleaning and disinfection device for an obstetrics and gynecology examination bed according to the present invention.

[0013] Figure 3 It is a front-view sectional enlarged structure schematic diagram of the handheld cleaner and the connecting component in an in-hospital infection prevention, cleaning and disinfection device for an obstetrics and gynecology examination bed according to the present invention.

[0014] Figure 4 It is a top-view sectional enlarged structure schematic diagram of the handheld cleaner in an in-hospital infection prevention, cleaning and disinfection device for an obstetrics and gynecology examination bed according to the present invention.

[0015] Figure 5 It is a three-dimensional enlarged structure schematic diagram of the gap opening part in an in-hospital infection prevention, cleaning and disinfection device for an obstetrics and gynecology examination bed according to the present invention.

[0016] Figure 6 It is a top-view sectional enlarged schematic diagram of the gap opening part in the using state in an in-hospital infection prevention, cleaning and disinfection device for an obstetrics and gynecology examination bed according to the present invention.

[0017] In the figure: 1. cleaning and disinfecting machine; 2. handheld cleaner; 21. circular groove; 22. exhaust groove; 23. suction groove; 24. liquid storage tank; 241. control switch; 242. button cover; 243. drainage hole; 25. perforation; 26. transparent observation window; 27. scale line; 28. ventilation gap; 3. gap expansion part; 31. wiping cotton layer; 32. rotation sensor unit; 4. connecting component; 41. airflow duct; 411. airflow cavity; 42. Y-type connecting pipe; X, expansion area. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with specific embodiments, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limitations on this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] Example

[0020] See also Figures 1 - 6 A hospital infection protection cleaning and disinfection device for a gynecological examination bed comprises a cleaning and disinfection machine 1, a handheld cleaner 2 is arranged on the cleaning and disinfection machine 1, a circular groove 21 is provided at the bottom of the handheld cleaner 2, a slit opening portion 3 is rotatably connected to the inner wall of the circular groove 21, an exhaust groove 22 and an air extraction groove 23 are provided in the handheld cleaner 2, the slit opening portion 3 is located between the exhaust groove 22 and the air extraction groove 23, a liquid storage tank 24 is provided in the handheld cleaner 2, the liquid storage tank 24 supplies disinfectant to the slit opening portion 3, a wiping cotton layer 31 is installed on the side wall of the slit opening portion 3, and the wiping cotton layer 31 is slidably connected to the inner wall of the circular groove 21, and a rotation sensor unit 32 for monitoring the rotation of the gap expansion part 3 is installed in the circular groove 21. A connecting component 4 is arranged between the cleaning and disinfecting machine 1 and the handheld cleaner 2. The connecting component 4 includes an airflow duct 41 and two Y-shaped connecting pipes 42. The Y-shaped connecting pipe 42 is fixedly connected to one end of the airflow duct 41, one of the Y-shaped connecting pipes 42 is installed on one side of the handheld cleaner 2, and the two ends of the Y-shaped connecting pipe 42 are respectively connected to the exhaust groove 22 and the suction groove 23, and the other Y-shaped connecting pipe 42 is installed on one side of the cleaning and disinfecting machine 1.

[0021] In this embodiment: The cleaning and disinfection machine 1 uses the handheld cleaner 2 to clean the gaps of the obstetrics and gynecology examination bed. The handheld cleaner 2 accommodates the gap opening part 3 through the circular groove 21. The gap opening part 3 protrudes from the bottom of the handheld cleaner 2. A section of the gap opening part 3 protruding from the bottom of the handheld cleaner 2 is V-shaped, facilitating the insertion of the gap opening part 3 into the gap of the obstetrics and gynecology examination bed. After the wider middle area of the gap opening part 3 enters the gap of the obstetrics and gynecology examination bed, the gap is opened. The gaps in the front and back directions of the movement of the gap opening part 3 form two opening areas. The bottom openings of the exhaust groove 22 and the air extraction groove 23 correspond to the positions of the two opening areas one by one. The cleaning and disinfection machine 1 is connected to the handheld cleaner 2 through the air flow conduit 41 and two Y-shaped connecting pipes 42. The two ends inside the two ends of the Y-shaped connecting pipe 42 are not interconnected. The negative pressure machine and the hot air blower inside the cleaning and disinfection machine 1 apply the extraction force and the blowing force to the two opening areas through the Y-shaped connecting pipe 42. The extraction force applied by the cleaning and disinfection machine 1 extracts impurities in the corresponding opening area through the air extraction groove 23, avoiding the influence of impurities on subsequent further cleaning. While the gap opening part 3 contacts and opens the gap of the obstetrics and gynecology examination bed, the wiping cotton layer 31 contacts the gap of the obstetrics and gynecology examination bed. The liquid storage tank 24 stores the disinfectant. The liquid storage tank 24 releases the disinfectant onto the wiping cotton layer 31. When the gap opening part 3 drives the wiping cotton layer 31 to rotate, the wiping cotton layer 31 evenly wipes and cleans the gap of the obstetrics and gynecology examination bed. At the same time, the disinfectant on the wiping cotton layer 31 can remain in the gap of the obstetrics and gynecology examination bed, realizing wiping, cleaning and disinfection. The rotation sensing unit 32 monitors the rotation of the gap opening part 3. When the gap opening part 3 moves in the gap of the obstetrics and gynecology examination bed, the rotation sensing unit 32 is induced, so that the gap opening part 3 can send an electrical signal to the internal equipment of the cleaning and disinfection machine 1, enabling the negative pressure machine and the hot air blower inside the cleaning and disinfection machine 1 to start working. As the handheld cleaner 2 continues to slide along the gap of the obstetrics and gynecology examination bed, the gap opening part 3 can reach the area after the impurities are extracted by the air extraction groove 23, and the exhaust groove 22 reaches the area after the gap opening part 3 and the wiping cotton layer 31 are cleaned and disinfected. The cleaning and disinfection machine 1 conducts the hot air flow into the corresponding opening area through the air flow conduit 41, the Y-shaped connecting pipe 42 and the exhaust groove 22, so that the hot air can dry the gap of the obstetrics and gynecology examination bed after wiping, cleaning and disinfection. It realizes the simultaneous removal of impurities, wiping, cleaning and disinfection of the gap of the obstetrics and gynecology examination bed. Medical staff only need to control the handheld cleaner 2 to move along the gap of the obstetrics and gynecology examination bed to complete, simplifying the difficulty of cleaning and disinfection. It can effectively clean out the impurities and garbage clamped in the gap. And after cleaning and disinfection, the gap is dried in time, reducing the residual moisture and the growth of bacteria, thereby reducing the difficulty of the next cleaning. At the same time, two chamfers are provided at the bottom of the handheld cleaner 2, facilitating the sliding cleaning of the handheld cleaner 2 and the gap opening part 3 on the obstetrics and gynecology examination bed, and avoiding the situation of scraping and damaging between the handheld cleaner 2 and the obstetrics and gynecology examination bed.

[0022] Among them, the handheld cleaner 2 is provided with a yielding perforation 25, and a control switch 241 for controlling the injection of liquid inside the liquid storage tank 24 is installed on the inner wall of the yielding perforation 25. A button cover 242 for replenishing liquid inside the liquid storage tank 24 is threadedly connected to one side of the handheld cleaner 2. A plurality of drainage holes 243 are provided between the liquid storage tank 24 and the circular groove 21. Solenoid valves are installed in the drainage holes 243. The control switch 241 controls the opening and closing of the plurality of solenoid valves. The handheld cleaner 2 is convenient for medical staff to hold through the yielding perforation 25, making the holding of the handheld cleaner 2 more stable. The control switch 241 is located at the upper position of the yielding perforation 25, which is convenient for medical staff to squeeze and control with their fingers. When the cover 242 is connected to the handheld cleaner 2, the button cover 242 blocks the filling port on one side of the liquid reservoir 24 so that the disinfectant can be stably stored. When the button cover 242 is opened, it is convenient to add additional disinfectant to the liquid reservoir 24. The liquid reservoir 24 releases the disinfectant through four drainage holes 243. The openings of the drainage holes 243 correspond to the positions of the wiping cotton layer 31. By squeezing the control switch 241, the control switch 241 controls the valves inside the drainage holes 243 to open, so that the disinfectant inside the liquid reservoir 24 can be applied to the wiping cotton layer 31 through the drainage holes 243, so that the wiping cotton layer 31 can carry the disinfectant to wipe, clean and disinfect the gaps in the obstetrics and gynecology examination bed.

[0023] Among them, two transparent observation windows 26 are installed on one side of the handheld cleaner 2, and the two transparent observation windows 26 correspond to the position of the liquid storage tank 24. Two scale lines 27 are set on one side of the handheld cleaner 2, and the scale lines 27 correspond to the positions of the transparent observation windows 26; the transparent observation window 26 makes the interior of the liquid storage tank 24 visible, and it is convenient to judge the remaining disinfectant dosage in the liquid storage tank 24 by observing the transparent observation window 26, so as to facilitate timely replenishment of the disinfectant. The scale line 27 is located on the side corresponding to the transparent observation window 26, and the disinfectant liquid level is judged by the scale line 27, so as to further increase the accuracy of the disinfectant dosage judgment.

[0024] Among them, there are four ventilation gaps 28 at the bottom of the handheld cleaner 2, and the ventilation gaps 28 are located between the circular groove 21 and the exhaust groove 22 or the suction groove 23; when the exhaust groove 22 and the suction groove 23 extract impurities and dry the corresponding open area, the airflow generated at the exhaust groove 22 and the suction groove 23 flows in the open area, and the airflow is exchanged with the external space through the ventilation gaps 28, preventing the open area from being in a sealed state and causing suffocation damage to the internal negative pressure machine and hot air blower of the cleaning and disinfection machine 1.

[0025] Among them, two air flow chambers 411 are arranged in the air flow duct 41. The air flow chambers 411 are in spatial communication with the corresponding end spaces of the two Y-shaped connecting pipes 42, and the internal spaces of the two air flow chambers 411 are not in communication; the two air flow chambers 411 enable the air flow duct 41 to achieve a double cavity. The two air flow chambers 411 separately conduct the suction force and blowing force generated by the negative pressure machine and the hot air blower. The Y-shaped connecting pipe 42 is also a double cavity, and the double cavity of the Y-shaped connecting pipe 42 is respectively butted with the two air flow chambers 411 to prevent the suction force and blowing force generated by the negative pressure machine and the hot air blower from interfering with each other.

[0026] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A hospital infection protection cleaning and disinfection device for a gynecological examination bed, comprising a cleaning and disinfection machine (1), characterized in that: The cleaning and disinfecting machine (1) is provided with a handheld cleaner (2), the bottom of the handheld cleaner (2) is provided with a circular groove (21), the inner wall of the circular groove (21) is rotatably connected to a clamping opening portion (3), an exhaust groove (22) and an air extraction groove (23) are provided in the handheld cleaner (2), the clamping opening portion (3) is located between the exhaust groove (22) and the air extraction groove (23), a liquid storage tank (24) is provided in the handheld cleaner (2), the liquid storage tank (24) supplies disinfectant to the clamping opening portion (3), and a wiping cotton layer (31) is installed on the side wall of the clamping opening portion (3), the wiping cotton layer (31) is slidably connected to the inner wall of the circular groove (21). A rotation sensor unit (32) for monitoring the rotation of the clamping opening portion (3) is installed in the circular groove (21); a connecting assembly (4) is provided between the cleaning and disinfecting machine (1) and the handheld cleaner (2); the connecting assembly (4) comprises an air flow duct (41) and two Y-shaped connecting pipes (42); the Y-shaped connecting pipes (42) are fixedly connected to one end of the air flow duct (41); one of the Y-shaped connecting pipes (42) is installed on one side of the handheld cleaner (2); two ends of the Y-shaped connecting pipe (42) are respectively connected to the exhaust groove (22) and the suction groove (23); and the other Y-shaped connecting pipe (42) is installed on one side of the cleaning and disinfecting machine (1).

2. The hospital infection protection cleaning and disinfection device for gynecological examination beds according to claim 1, characterized in that: The handheld cleaner (2) is provided with a clearance hole (25), the inner wall of which is mounted a control switch (241) for controlling the release of liquid from the liquid storage tank (24), a button cover (242) for replenishing liquid from the liquid storage tank (24) being threadedly connected to one side of the handheld cleaner (2), a plurality of liquid discharge holes (243) being arranged between the liquid storage tank (24) and the circular groove (21), solenoid valves being mounted in the liquid discharge holes (243), and the control switch (241) controlling the opening and closing of the plurality of solenoid valves.

3. The hospital infection protection cleaning and disinfection device for gynecological examination beds according to claim 1, characterized in that: Two transparent observation windows (26) are installed on one side of the handheld cleaner (2), and the two transparent observation windows (26) correspond to the positions of the liquid storage tank (24). Two scale lines (27) are provided on one side of the handheld cleaner (2), and the scale lines (27) correspond to the positions of the transparent observation windows (26).

4. The hospital infection protection cleaning and disinfection device for gynecological examination beds according to claim 1, characterized in that: The handheld cleaner (2) has four ventilation notches (28) opened and closed at the bottom, and the ventilation notches (28) are located between the circular groove (21) and the exhaust groove (22) or the suction groove (23).

5. The hospital infection protection cleaning and disinfection device for gynecological examination beds according to claim 1, characterized in that: Two airflow chambers (411) are arranged in the airflow duct (41), the airflow chambers (411) are connected to the spaces of corresponding ends of the two Y-shaped connecting tubes (42), and the internal spaces of the two airflow chambers (411) are not connected.

6. A hospital infection protection cleaning and disinfection device for gynecological examination beds according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. The cleaning and disinfecting machine (1) transmits the extraction force and the blowing force into the exhaust groove (22) and the exhaust groove (23) through the air flow duct (41) and the Y-shaped connecting pipe (42). The gap expansion part (3) is inserted into the gap of the obstetrics and gynecology examination bed so that the gap can be opened. Impurities in the corresponding expansion area are extracted through the exhaust groove (23). The gap expansion part (3) drives the wiping cotton layer (31) to wipe and clean the gap of the obstetrics and gynecology examination bed evenly. The exhaust groove (22) transmits the hot air flow into the corresponding expansion area so that the hot air can dry the gap of the obstetrics and gynecology examination bed after wiping, cleaning and disinfection. As the handheld cleaner (2) continues to slide along the gap of the obstetrics and gynecology examination bed, the gap of the obstetrics and gynecology examination bed is simultaneously cleaned, wiped and disinfected. S2. The medical staff holds the handheld cleaner (2) through the opening perforation (25) and squeezes the control switch (241). The control switch (241) controls the valves inside the plurality of drainage holes (243) to open, so that the disinfectant inside the liquid storage tank (24) can be applied to the wiping cotton layer (31) through the drainage holes (243), thereby enabling the wiping cotton layer (31) to carry the disinfectant to wipe and clean the gaps of the gynecological and obstetric examination bed and disinfect it; S3. The negative pressure machine and the hot air blower inside the cleaning and disinfecting machine (1) apply extraction force and blowing force to the two air flow chambers (411) through the Y-shaped connecting pipe (42). The two air flow chambers (411) separately guide the extraction force and blowing force generated by the negative pressure machine and the hot air blower to the Y-shaped connecting pipe (42) on one side of the handheld cleaner (2). The double chambers of the Y-shaped connecting pipe (42) are respectively connected to the two air flow chambers (411) to prevent the extraction force and blowing force generated by the negative pressure machine and the hot air blower from interfering with each other. The Y-shaped connecting pipe (42) conducts the extraction force and blowing force into the exhaust groove (22) and the exhaust groove (23). The exhaust groove (22) and the exhaust groove (23) perform impurity removal and drying operations on the front and rear areas of the gap opened by the clamping opening portion (3).

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