CN214018866U

CN214018866U - Clinical vagina sterilization cleaning device that uses of gynaecology and obstetrics

Info

Publication number: CN214018866U
Application number: CN202020756230.1U
Authority: CN
Inventors: 刘晓梅; 罗灿兰; 杜吉莎
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-08-24
Anticipated expiration: 2030-05-09

Abstract

The utility model discloses a clinical vagina sterilization cleaning device of using of gynaecology and obstetrics, including bottom plate, shell body, handle rack, handheld handle, water pump, check valve, hose, function auto-change over device, touch screen and universal wheel, the shell body is located on the bottom plate, the bottom plate diapire is located to the universal wheel, the shell body is the cavity setting, the shell body top is located to the handle rack, handheld handle can be dismantled and locate on the handle rack, handheld handle is the setting of cavity cylinder, be equipped with the screw thread bayonet socket on the handheld handle, be equipped with metal contact one in the screw thread bayonet socket, the shell body lateral wall is located to the water pump, check valve one end runs through the shell body and locates on the shell body. The utility model belongs to the technical field of medical equipment, specifically provide a clinical vagina sterilization cleaning device of using of gynaecology and obstetrics that the function is various, can switch over fast, accelerate medicine dissolving speed, prevent that the liquid medicine from deposiing the layering, increase patient comfort level, easy operation, labour saving and time saving.

Description

Clinical vagina sterilization cleaning device that uses of gynaecology and obstetrics

Technical Field

The utility model belongs to the technical field of medical equipment, specifically indicate a clinical vagina sterilization cleaning device of gynaecology and obstetrics.

Background

More and more women suffer from gynecological inflammation with different degrees, mainly manifested as abnormal leucorrhea, peculiar smell, pruritus and the like, which seriously affects the physical and mental health of the women, in the diagnosis and treatment of gynecological diseases, the inner wall of the vagina of a patient is often required to be sterilized, cleaned, atomized or coated with ointment, thereby solving the common problem of breeding of pruritus, peculiar smell and germs in the vagina in the gynecological diseases, and clinically, clear water or medicines are usually poured into a basin and cleaned by hands, so that the manual cleaning operation is troublesome, the cross infection of the diseases is easily caused, and the dose control is not facilitated; the existing vaginal cleaning appliances have single function, and often need to be treated by different means by replacing tools, so that the medicinal effect is limited; therefore, an efficient and hygienic vaginal cleaner is of great importance for the daily nursing and therapeutic cleaning of women.

SUMMERY OF THE UTILITY MODEL

In order to solve the existing difficult problem, the utility model provides a clinical vagina cleaning and sterilizing device of gynaecology and obstetrics that the function is various, can fast switch over, accelerate medicine solution dissolving speed, prevent that the liquid medicine from deposiing the layering, increasing patient's comfort level, easy operation, labour saving and time saving.

The utility model adopts the following technical scheme: the utility model relates to a clinical vagina cleaning and sterilizing device for obstetrics and gynecology department, which comprises a bottom plate, an outer shell, a handle placing rack, a hand-held handle, a water pump, a check valve, a hose, a function switching device, a touch screen and a universal wheel, wherein the outer shell is arranged on the bottom plate, the universal wheel is arranged on the bottom wall of the bottom plate, the outer shell is arranged in a hollow cavity, the handle placing rack is arranged at the top of the outer shell, the hand-held handle can be disassembled on the handle placing rack, the hand-held handle is arranged in a hollow cylinder, a screw thread bayonet is arranged on the hand-held handle, a first metal contact is arranged in the screw thread bayonet, the water pump is arranged on the side wall of the outer shell, one end of the check valve is arranged on the outer shell in a way, the other end of the check valve is arranged at the input end of the water pump, the lower end of the hose is arranged at the output end of the water pump, the upper end of the hose is arranged at the bottom of the hand-held handle, the function switching device is arranged on the outer shell, the function switching device comprises a tool box, a replaceable atomizing head, a replaceable water spraying head and a replaceable smearing head, wherein the tool box is arranged on the side wall of the shell, the replaceable atomizing head, the replaceable water spraying head and the replaceable smearing head are respectively arranged in the tool box, the replaceable atomizing head is detachably arranged on the threaded bayonet, the replaceable atomizing head comprises a threaded connector I, a metal contact II, a leakage cover I, a taper hose I, an ultrasonic atomizing sheet and an atomizing nozzle, an atomizing through hole is formed in the center of the leakage cover I, the threaded connector I is arranged at the position of the atomizing through hole in the lower wall of the leakage cover and is communicated with the atomizing through hole, the threaded connector I is communicated with the front and the back of the threaded connector I, the threaded connector I is in threaded engagement with the threaded bayonet, the leakage cover I is detachably arranged on the threaded bayonet through the threaded connector I, and the ultrasonic atomizing sheet is arranged in the atomizing through hole, thereby screw joint one link up with the hose with the screw thread bayonet coupling makes atomizing through-hole and link to each other, and the liquid medicine that ultrasonic atomization piece carried the hose atomizes to promote the liquid medicine to absorb, conical hose one is located on the weeping cover one and links to each other with the atomizing through-hole, conical hose one is conical setting, a conical hose bottom cross-sectional area is greater than the atomizing through-hole cross-sectional area, and thereby conical hose completely covers the atomizing through-hole and makes the liquid medicine atomizing gas after the ultrasonic atomization piece atomizing all erupt to the conical hose in, atomizer locates a conical hose top, and atomizer erupt atomizing gas to the affected part, and when screw joint one and screw thread bayonet coupling, metal contact one and two contact intercommunication circuits of metal contact, ultrasonic atomization piece atomizes the liquid medicine into 1um to 5 um's tiny fog grain through ultrasonic wave energy to water is the medium, the replaceable water spraying head comprises a second threaded connector, a second leakage cover, a water injection through hole, a second tapered hose and a water injection spraying head, the second threaded connector is arranged at the lower end of the second leakage cover and is communicated with the water injection through hole, the second threaded connector is in threaded engagement with a threaded bayonet, the second leakage cover is detachably arranged on the threaded bayonet through the second threaded connector, the second threaded connector is communicated with the front and the back of the second threaded connector, the water injection through hole penetrates through the center of the second leakage cover, the second tapered hose is arranged on the second leakage cover and is connected with the water injection through hole, the second tapered hose is in a conical shape, the cross sectional area of the bottom of the second tapered hose is larger than that of the water injection through hole, and the water injection spraying head is arranged at the top of the second tapered hose, distilled water or liquid medicine is sprayed out through a water injection nozzle to sterilize and clean the affected part of the patient, the replaceable smearing head comprises a threaded joint III, a silica gel soft rod and a smearing head, the third threaded joint is arranged at the lower end of the silica gel soft rod, the third threaded joint is in a hollow arrangement with a front and a back through, the third threaded connector is in threaded engagement with the threaded bayonet, the soft silica gel rod is detachably arranged on the threaded bayonet through the third threaded connector, the soft silica gel rod is communicated with the threaded connector in a hollow mode and is communicated with the threaded connector, the smearing head is arranged at the top of the soft silica gel rod, medical staff evenly smear the ointment on the smearing head and stretch the smearing head into the affected part of a patient to apply the ointment, so that the ointment is more even and comprehensive to apply the ointment, secondary cross infection is avoided, the touch screen is arranged on the side wall of the shell, and a controller is arranged in the touch screen, so that the operation of internal parts of the equipment can be controlled conveniently.

Further, be equipped with agitating unit in the shell body, agitating unit includes motor, pivot and disc impeller, inside the shell body upper wall was located to the motor, the pivot is rotatable to be located in the shell body, the pivot upper end links to each other with the motor output shaft, the pivot below is located to the disc impeller, crisscross circumference array distribution is equipped with impeller recess and impeller arch on the disc impeller in proper order, and motor work drives the pivot and rotates, and the pivot rotates and drives the disc impeller and rotate, is convenient for stir the liquid medicine for the medicine dissolves speed, prevents that the liquid medicine from deposiing the layering, influences the medicine effect.

Further, be equipped with constant temperature equipment on the shell body lateral wall, constant temperature equipment includes temperature sensor, heating chamber and thermal resistance silk, temperature sensor locates on the inside lateral wall of shell body, is convenient for detect the liquid medicine temperature, the heating chamber is located on the inside lateral wall of shell body, the heating chamber is the cavity setting, the thermal resistance silk is located and is heated intracavity portion, and the thermal resistance silk circular telegram is generated heat, and the thermal resistance silk gives the heating chamber with heat transfer, and the heating chamber heats the liquid medicine, can increase medicine dissolving rate, also can increase patient's comfort level.

Furthermore, the upper wall of the outer shell body is respectively provided with a drug feeding port and a water filling port in a penetrating mode, distilled water or liquid medicine can be conveniently added into the device, the drug feeding port is hinged to a drug feeding cover, the water filling port is provided with a rubber plug in a penetrating mode, and dust or sundries entering the device are avoided.

Further, be equipped with trigger switch and spacing boss on the handheld handle respectively, the trigger switch is convenient for control the injection condition of distilled water or liquid medicine, spacing boss is convenient for medical personnel to hang handheld handle on the handle rack, conveniently gets and puts labour saving and time saving.

Further, be equipped with power plug on the shell body, power plug is connected with motor, touch-control screen, controller, thermal resistance silk, temperature sensor, water pump, trigger switch and metal contact electricity respectively, the controller is connected with motor, touch-control screen, thermal resistance silk, temperature sensor, water pump, trigger switch and metal contact electricity respectively

Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: this scheme is clinical vagina sterilization cleaning device of using of gynaecology and obstetrics, change different shower nozzles through function auto-change device and realize the fog inhalation, wash, paint the fast switch-over of three kinds of functions of ointment, it rotates to drive the pivot through motor work, the pivot rotates and drives the disc impeller and rotate, stir the liquid medicine, accelerate medicine dissolving speed, prevent that the liquid medicine from precipitating the layering, influence medicine effect, heat the liquid medicine through the thermal resistance silk, increase medicine dissolving speed, increase patient's comfort level, and is easy for operation, and time saving and labor saving.

Drawings

Fig. 1 is a schematic view of the overall structure of a vaginal sterilization and cleaning device for clinical obstetrics and gynecology department of the present invention;

fig. 2 is a top view of the stirring device of the vaginal sterilization and cleaning device for clinical use in obstetrics and gynecology department of the present invention;

fig. 3 is a schematic structural view of a replaceable atomizing head of the vaginal sterilization cleaning device for clinical obstetrics and gynecology department of the present invention;

fig. 4 is a schematic structural view of a replaceable water injection head of the vaginal sterilization cleaning device for clinical obstetrics and gynecology department of the utility model;

fig. 5 is a schematic structural view of the replaceable smearing head of the vaginal sterilization cleaning device for clinical use in obstetrics and gynecology department of the present invention.

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings: 1. the device comprises a base plate, 2, an outer shell, 3, a handle placing rack, 4, a handheld handle, 5, a water pump, 6, a one-way valve, 7, a hose, 8, a function switching device, 9, a touch screen, 10, a universal wheel, 11, a threaded bayonet, 12, a first metal contact, 13, a tool box, 14, a replaceable atomizing head, 15, a replaceable water spraying head, 16, a replaceable smearing head, 17, a first threaded connector, 18, a second metal contact, 19, a first liquid leakage cover, 20, a first conical hose, 21, an ultrasonic atomizing sheet, 22, an atomizing nozzle, 23, an atomizing through hole, 24, a second threaded connector, 25, a second liquid leakage cover, 26, a water injection through hole, 27, a second conical hose, 28, a water injection nozzle, 29, a third threaded connector, 30, a soft silica gel rod, 31, a smearing head, 32, a controller, 33, a stirring device, 34, a motor, 35, a rotating shaft, 36, a disc impeller, 37, a universal wheel, The device comprises an impeller groove, 38, an impeller bulge, 39, a constant temperature device, 40, a temperature sensor, 41, a heating cavity, 42, a thermal resistance wire, 43, a medicine feeding port, 44, a water filling port, 45, a medicine feeding cover, 46, a rubber plug, 47, a trigger switch, 48, a limit boss, 49 and a power plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in figures 1-5, the utility model relates to a clinical vaginal sterilization cleaning device for obstetrics and gynecology department, which comprises a bottom plate 1, an outer shell 2, a handle placing rack 3, a hand-held handle 4, a water pump 5, a check valve 6, a hose 7, a function switching device 8, a touch screen 9 and a universal wheel 10, wherein the outer shell 2 is arranged on the bottom plate 1, the universal wheel 10 is arranged on the bottom wall of the bottom plate 1, the outer shell 2 is arranged in a hollow cavity, the handle placing rack 3 is arranged on the top of the outer shell 2, the hand-held handle 4 is detachably arranged on the handle placing rack 3, the hand-held handle 4 is arranged in a hollow cylinder, a screw bayonet 11 is arranged on the hand-held handle 4, a first metal contact 12 is arranged in the screw bayonet 11, the water pump 5 is arranged on the side wall of the outer shell 2, one end of the check valve 6 penetrates through the outer shell 2 and is arranged on the outer shell 2, and the other end of the check valve 6 is arranged at the input end of the water pump 5, the lower end of the hose 7 is arranged at the output end of the water pump 5, the upper end of the hose 7 is arranged at the bottom of the handle 4, the function switching device 8 is arranged on the outer shell 2, the function switching device 8 comprises a tool box 13, a replaceable atomizing head 14, a replaceable water spraying head 15 and a replaceable smearing head 16, the tool box 13 is arranged on the side wall of the outer shell 2, the replaceable atomizing head 14, the replaceable water spraying head 15 and the replaceable smearing head 16 are respectively arranged in the tool box 13, the replaceable atomizing head 14 can be detachably arranged on the thread bayonet 11, the replaceable atomizing head 14 comprises a first thread joint 17, a second metal contact 18, a first leakage cover 19, a first conical hose 20, an ultrasonic atomizing sheet 21 and an atomizing nozzle 22, an atomizing through hole 23 is arranged at the center of the first leakage cover 19, the first thread joint 17 is arranged at the lower wall atomizing through hole 23 of the first leakage cover 19 and is communicated with the atomizing through hole 23, the replaceable water spraying head 15 comprises a threaded connector II 24, a liquid leakage cover II 25, a water injection through hole 26, a tapered hose II 27 and a water injection nozzle 28, the threaded connector II 24 is arranged at the lower end of the liquid leakage cover II 25 and communicated with the water injection through hole 26, and the threaded connector II 24 is in threaded engagement with the threaded bayonet 11, the two liquid leakage covers 25 are detachably arranged on the threaded bayonet 11 through the two threaded connectors 24, the two threaded connectors 24 are arranged in a penetrating mode, the water injection through hole 26 penetrates through the center of the two liquid leakage covers 25, the two tapered hoses 27 are arranged on the two liquid leakage covers 25 and are connected with the water injection through hole 26, the two tapered hoses 27 are arranged in a conical mode, the cross sectional area of the bottoms of the two tapered hoses 27 is larger than that of the water injection through hole 26, the water injection spray head 28 is arranged at the tops of the two tapered hoses 27, the replaceable smearing head 16 comprises three threaded connectors 29, a soft silica gel rod 30 and a smearing head 31, the three threaded connectors 29 are arranged at the lower ends of the soft silica gel rods 30, the three threaded connectors 29 are arranged in a penetrating mode in a hollow mode around the threaded connectors 29, the three threaded connectors 29 are in threaded engagement with the threaded bayonet 11, and the soft silica gel rods 30 are detachably arranged on the threaded bayonet 11 through the three connectors 29, the soft pole 30 of silica gel link up the cavity setting and link up with three 29 of screwed joint for the front and back and link up continuously, the soft pole 30 top of silica gel is located to smearing head 31, touch-control screen 9 is located on the 2 lateral walls of shell body, be equipped with controller 32 in the touch-control screen 9.

Wherein, be equipped with agitating unit 33 in the shell body 2, agitating unit 33 includes motor 34, pivot 35 and disc impeller 36, motor 34 locates inside the shell body 2 upper wall, pivot 35 is rotatable to be located in the shell body 2, pivot 35 upper end links to each other with motor 34 output shaft, disc impeller 36 locates below pivot 35, crisscross circumference array distribution is equipped with impeller recess 37 and impeller arch 38 on the disc impeller 36 in proper order, be equipped with constant temperature equipment 39 on the shell body 2 lateral wall, constant temperature equipment 39 includes temperature sensor 40, heating chamber 41 and hot resistance wire 42, temperature sensor 40 locates on the shell body 2 inside lateral wall, heating chamber 41 is the cavity setting, hot resistance wire 42 establishes inside heating chamber 41, shell body 2 upper wall runs through respectively and is equipped with and throws medicine mouth 43 and water filling port 44, the drug-feeding port 43 is hinged with a drug-feeding cover 45, the water-filling port 44 is provided with a rubber plug 46 in a penetrating manner, the hand-held handle 4 is provided with a trigger switch 47 and a limiting boss 48, and the outer shell body 2 is provided with a power plug 49.

When the device is used, firstly, the rubber plug 46 and the dosing cover 45 are opened, distilled water or medicine is added into the outer shell 2, the touch screen 9 is used for controlling the motor 34 to work, so as to drive the disc impeller 36 to stir liquid medicine, the touch screen 9 is used for controlling the thermal resistance wire 42 to heat liquid through the heating cavity 41, the heating is stopped after the temperature reaches the proper temperature of a human body, when a patient needs atomization treatment, medical personnel take out the replaceable atomization head 14 from the tool box 13, the threaded joint I17 is screwed with the threaded bayonet 11, the metal contact I12 is in contact conduction with the metal contact II 18, the replaceable atomization head 14 is powered on to work, the touch screen 9 is used for opening the water pump 5, the water pump 5 sucks the liquid from the outer shell 2, the liquid is conveyed to the tapered hose I20 through the hose 7 and the handheld handle 4 in sequence, the ultrasonic atomization sheet 21 atomizes the liquid, and conveys the atomized medicine gas to the atomization nozzle 22 through the tapered hose I20 and sprays the atomization, direct action is in the focus, carry out the atomizing treatment to patient's affected part, when patient need use distilled water or liquid medicine to wash, medical personnel take out removable sprinkler bead 15 from toolbox 13, screw threaded joint two 24 and screw thread bayonet 11, use touch screen 9 to open water pump 5, water pump 5 imbibes the liquid from the shell body 2 internal loop through hose 7, handheld handle 4 is carried to taper hose two 27, spout liquid from water injection shower nozzle 28, wash patient's affected part, when patient need paint the ointment, medical personnel take out removable daubing head 16 from toolbox 13, screw threaded joint three 29 and screw thread bayonet 11, evenly paint the ointment on daubing head 31, visit patient's affected part with daubing head 31 and carry out the medicine loading.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a clinical vagina sterilization cleaning device that uses of gynaecology and obstetrics which characterized in that: the multifunctional water pump comprises a bottom plate, an outer shell, a handle placing rack, a handheld handle, a water pump, a one-way valve, a hose, a function switching device, a touch screen and universal wheels, wherein the outer shell is arranged on the bottom plate, the universal wheels are arranged on the bottom wall of the bottom plate, the outer shell is arranged in a hollow cavity, the handle placing rack is arranged at the top of the outer shell, the handheld handle is detachably arranged on the handle placing rack, the handheld handle is arranged in a hollow cylinder, a thread bayonet is arranged on the handheld handle, a first metal contact is arranged in the thread bayonet, the water pump is arranged on the side wall of the outer shell, one end of the one-way valve penetrates through the outer shell and is arranged on the outer shell, the other end of the one-way valve is arranged at the input end of the water pump, the lower end of the, The replaceable atomizing head, the replaceable water spraying head and the replaceable smearing head are arranged on the side wall of the shell, the replaceable atomizing head, the replaceable water spraying head and the replaceable smearing head are respectively arranged in the tool box, the replaceable atomizing head is detachably arranged on the threaded bayonet, the replaceable atomizing head comprises a first threaded connector, a second metal contact, a first liquid leakage cover, a first conical hose, an ultrasonic atomizing sheet and an atomizing nozzle, an atomizing through hole is formed in the center of the first liquid leakage cover, the first threaded connector is arranged at the atomizing through hole on the lower wall of the first liquid leakage cover and is communicated with the atomizing through hole, the first threaded connector is communicated with the front and the back, the first threaded connector is in threaded engagement with the threaded bayonet, the first liquid leakage cover is detachably arranged on the threaded bayonet through the first threaded connector, the ultrasonic atomizing sheet is arranged in the atomizing through hole, the first conical hose is arranged on the first liquid leakage cover and is connected with the atomizing through hole, the first conical hose is in a conical arrangement, the cross sectional area of the bottom of the first conical hose is larger than that of the atomizing through hole, the atomizing nozzle is arranged at the top of the first conical hose, the replaceable sprinkler head comprises a second threaded connector, a second leakage cover, a water injection through hole, a second conical hose and a water injection nozzle, the second threaded connector is arranged at the lower end of the second leakage cover and is communicated with the water injection through hole, the second threaded connector is in threaded engagement with the threaded bayonet, the second leakage cover is detachably arranged on the threaded bayonet through the second threaded connector, the second threaded connector is communicated with the front and the back of the second threaded connector, the water injection through hole is arranged at the center of the second leakage cover in a penetrating manner, the second conical hose is arranged on the second leakage cover and is connected with the water injection through hole, the second conical hose is in a conical arrangement, the cross sectional area of the bottom of, removable head of smearing includes threaded joint three, the soft pole of silica gel and scribbles the head, the soft pole lower extreme of silica gel is located to threaded joint three, link up the cavity setting around threaded joint three is, threaded joint three and screw thread bayonet socket screw-thread engagement, the soft pole of silica gel can be dismantled through threaded joint three and locate on the screw thread bayonet socket, the soft pole of silica gel link up the cavity setting and link up with threaded joint and link up continuously around being, scribble the head and locate the soft pole top of silica gel, the touch-control screen is located on the shell lateral wall, be equipped with the controller in the touch-control screen.

2. The vaginal sterilization and cleaning device for clinical obstetrics and gynecology department according to claim 1, wherein: the improved rotary agitator is characterized in that an agitating device is arranged in the outer shell and comprises a motor, a rotating shaft and a disc impeller, the motor is arranged inside the upper wall of the outer shell, the rotating shaft is rotatably arranged in the outer shell, the upper end of the rotating shaft is connected with an output shaft of the motor, the disc impeller is arranged below the rotating shaft, and impeller grooves and impeller bulges are formed in the disc impeller in a staggered circumferential array mode.

3. The vaginal sterilization and cleaning device for clinical obstetrics and gynecology department according to claim 1, wherein: the heating device is characterized in that a constant temperature device is arranged on the side wall of the shell body and comprises a temperature sensor, a heating cavity and a thermal resistance wire, the temperature sensor is arranged on the side wall inside the shell body, the heating cavity is arranged in a hollow cavity, and the thermal resistance wire is arranged inside the heating cavity.

4. The vaginal sterilization and cleaning device for clinical obstetrics and gynecology department according to claim 1, wherein: the upper wall of the outer shell body is respectively provided with a drug feeding port and a water filling port in a penetrating mode, the drug feeding port is hinged to a drug feeding cover, and the water filling port is provided with a rubber plug in a penetrating mode.

5. The vaginal sterilization and cleaning device for clinical obstetrics and gynecology department according to claim 1, wherein: and the handheld handle is respectively provided with a trigger switch and a limiting boss.

6. The vaginal sterilization and cleaning device for clinical obstetrics and gynecology department according to claim 1, wherein: and the outer shell is provided with a power plug.