阅读说明：本技术 一种糖尿病足护理装置及其使用方法 (Diabetic foot nursing device and using method thereof ) 是由 鲁菊英 曹桐 吴晓芳 于 2019-11-21 设计创作，主要内容包括：本发明涉及一种糖尿病足护理装置及其使用方法。所述糖尿病足护理装置包括废水箱、支撑组件、清理箱与输出组件,所述废水箱支撑于地面上,所述废水箱的顶部形成有足部支撑面。所述足部支撑面上开设有多个渗水孔,所述清理箱通过所述支撑组件支撑于所述废水箱上,所述清理箱的内部形成有清理腔,所述清理腔内用于收容生理盐水,所述清理箱的侧壁内嵌设有加热膜,所述清理箱的侧壁上设置有控制面板。所述糖尿病足护理装置对足部的清理效率较高。(The invention relates to a diabetic foot nursing device and a using method thereof. The diabetic foot nursing device comprises a waste water tank, a supporting component, a cleaning box and an output component, wherein the waste water tank is supported on the ground, and a foot supporting surface is formed at the top of the waste water tank. The foot supporting surface is provided with a plurality of water seepage holes, the cleaning box passes through the supporting component supports in on the waste water tank, the inside of cleaning box is formed with the clearance chamber, the clearance intracavity is used for acceping normal saline, the embedded heating film that is equipped with of lateral wall of cleaning box, be provided with control panel on the lateral wall of cleaning box. The diabetic foot nursing device is high in cleaning efficiency of the foot.)

1. The diabetic foot nursing device is characterized by comprising a waste water tank (10), a supporting component (20), a cleaning tank (30) and an output component (40), wherein the waste water tank (10) is supported on the ground, a foot supporting surface (11) is formed at the top of the waste water tank (10), a plurality of water seepage holes (111) are formed in the foot supporting surface (11), the cleaning tank (30) is supported on the waste water tank (10) through the supporting component (20), a cleaning cavity is formed inside the cleaning tank (30) and is used for containing physiological saline, a heating film is embedded in the side wall of the cleaning tank (30), a control panel (31) is arranged on the side wall of the cleaning tank (30), a circuit structure inside the control panel (31) is electrically connected with the heating film, the output component (40) comprises a main flow bent pipe (41) and a flexible cleaning pipe (43), the main flow bent pipe (41) is convexly arranged on the side wall of the cleaning box (30) and communicated with the cleaning cavity, the end part of the main flow bent pipe (41) extends towards the waste water tank (10), the flexible cleaning pipe (43) is connected to the middle part of the main flow bent pipe (41), and the end part of the flexible cleaning pipe (43) is provided with an adjusting nozzle.

2. The diabetic foot care device according to claim 1, characterized in that the top periphery of the waste water tank (10) is convexly provided with a retaining rib (12), the retaining rib (12) surrounding the periphery of the foot supporting surface (11).

3. The diabetic foot care device according to claim 2, wherein the retaining rib (12) is a flexible rib and the plurality of weep holes (111) are all circular holes.

4. The diabetic foot care device according to claim 3, wherein the control panel (31) is a rectangular panel, the control panel (31) having a plurality of keys (311) disposed thereon, the mainstream elbow (41) being disposed adjacent to the control panel (31).

5. The diabetic foot care device according to claim 4, characterized in that a foot gap (13) is formed between the waste water tank (10) and the cleaning tank (30) for extending into the foot, and a drain pipe (14) is protruded from the bottom of the side wall of the waste water tank (10).

6. The diabetic foot care device according to claim 5, wherein a liquid collection chamber is formed in the waste water tank (10), the liquid collection chamber is communicated with the liquid discharge pipe (14), and the plurality of seepage holes (111) are all communicated with the liquid collection chamber.

7. The diabetic foot care device according to claim 6, wherein a cleaning film layer is adhered to the foot supporting surface (11), and a plurality of alignment holes are formed in the cleaning film layer and are aligned with the plurality of water seepage holes (111) respectively.

8. The diabetic foot care device according to claim 7, wherein the foot supporting surface (11) comprises a water permeable area (112) and a sealing area (114) which are adjacent to each other, the plurality of water permeable holes (111) are all arranged on the water permeable area (112), the sealing area (114) is adjacent to one side of the supporting component (20), and the clean film layer is detachably attached to the water permeable area (112) and exposes the sealing area (114).

9. The diabetic foot care device according to claim 8, wherein the main flow elbow (41) comprises a connecting pipe portion (411) and a liquid outlet pipe portion (413), the connecting pipe portion (411) is protruded on the side wall of the cleaning box (30), and the liquid outlet pipe portion (413) is perpendicularly connected to an end of the connecting pipe portion (411) and extends toward the foot supporting surface (11).

10. A method of using the diabetic foot care device of claim 9, comprising the steps of:

filling physiological saline into the cleaning box (30), and controlling the heating film to heat the physiological saline to a preset temperature by using the control panel (31);

the patient puts feet into the foot gap (13) and supports the feet on the clean film layer;

the physiological saline in the cleaning box (30) is led out by the flexible cleaning pipe (43), the physiological saline is sprayed to the feet of the patient through the adjusting nozzle to carry out cleaning operation, and the cleaned wastewater flows into a liquid collecting cavity of the waste liquid box through the plurality of water seepage holes (111); and

tearing off the clean film layer, and pasting a new clean film layer on the foot supporting surface (11) so that the new clean film layer deviates towards the sealing area (114) to make the alignment holes dislocated with the water seepage holes (111) respectively, thereby realizing the sealing of the top of the waste water tank (10).

Technical Field

The invention relates to a diabetic foot nursing device and a using method thereof.

Background

In the practice of nursing diabetic feet, the diabetic feet are easy to appear, so that the skin of the feet is broken, the wound surface is not healed for a long time, and the local exudation necrosis is caused, so that the diabetic feet need to be cleaned regularly. In the clinical washing procedure, the gauze is held by forceps. However, such a cleaning step is inefficient.

Disclosure of Invention

Accordingly, there is a need for a diabetic foot care device with high cleaning efficiency and a method of using the same.

A diabetic foot nursing device comprises a waste water tank, a supporting component, a cleaning tank and an output component, wherein the waste water tank is supported on the ground, a foot supporting surface is formed at the top of the waste water tank, a plurality of water seepage holes are formed in the foot supporting surface, the cleaning tank is supported on the waste water tank through the supporting component, a cleaning cavity is formed in the cleaning tank and is used for containing physiological saline, a heating film is embedded in the side wall of the cleaning tank, a control panel is arranged on the side wall of the cleaning tank, a circuit structure in the control panel is electrically connected with the heating film, the output component comprises a main flow bent pipe and a flexible cleaning pipe, the main flow bent pipe is convexly arranged on the side wall of the cleaning tank and is communicated with the cleaning cavity, the end part of the main flow bent pipe extends towards the waste water tank, and the flexible cleaning pipe is connected to the middle part of the main flow bent pipe, the end part of the flexible cleaning pipe is provided with an adjusting nozzle.

In one embodiment, the top periphery of the waste water tank is convexly provided with a retaining rib which surrounds the periphery of the foot supporting surface.

In one embodiment, the retaining rib is a flexible rib, and the plurality of weep holes are all circular holes.

In one embodiment, the control panel is a rectangular panel, a plurality of keys are arranged on the control panel, and the main flow bent pipe is arranged adjacent to the control panel.

In one embodiment, a foot gap is formed between the waste water tank and the cleaning tank and used for extending into the foot, and a drain pipe is convexly arranged at the bottom of the side wall of the waste water tank.

In one embodiment, a liquid collecting cavity is formed in the wastewater tank, the liquid collecting cavity is communicated with the liquid discharge pipe, and the plurality of seepage holes are communicated with the liquid collecting cavity.

In one embodiment, a cleaning film layer is attached to the foot supporting surface, and a plurality of alignment holes are formed in the cleaning film layer and are aligned with the plurality of water seepage holes respectively.

In one embodiment, the foot supporting surface includes a water penetration region and a sealing region adjacent to each other, the plurality of water penetration holes are opened on the water penetration region, the sealing region is adjacent to one side of the supporting member, and the cleaning film layer is detachably attached to the water penetration region and exposes the sealing region.

In one embodiment, the main flow bent pipe comprises a connecting pipe part and a liquid outlet pipe part, the connecting pipe part is arranged on the side wall of the cleaning box in a protruding mode, and the liquid outlet pipe part is vertically connected to the end part of the connecting pipe part and extends towards the foot supporting surface.

A method of using a diabetic foot care device as described above, comprising the steps of:

filling physiological saline into the cleaning box, and controlling the heating film to heat the physiological saline to a preset temperature by using the control panel;

the patient puts feet into the foot gaps and supports the feet on the clean film layer;

the physiological saline in the cleaning box is led out by utilizing the flexible cleaning pipe, the physiological saline is sprayed to the feet of the patient through the adjusting nozzle to carry out cleaning operation, and the cleaned wastewater flows into a liquid collecting cavity of the waste liquid box through the plurality of water seepage holes; and

tearing off the clean film layer, and pasting a new clean film layer on the foot supporting surface, so that the new clean film layer deviates towards the sealing area, the aligning holes are respectively staggered with the water seepage holes, and the top of the waste water tank is sealed.

When the diabetic foot nursing device is used, physiological saline is filled in the cleaning box, and the control panel is utilized to control the heating film to heat the physiological saline to a preset temperature, such as 37 ℃. The patient supports the feet on a foot supporting surface at the top of the waste water tank; the physiological saline in the cleaning box is led out by the flexible cleaning pipe, and the physiological saline is sprayed to the feet of the patient through the adjusting nozzle to carry out cleaning operation. Sufficient nursing device of diabetes can provide homothermal normal saline, avoids the stimulation to patient's foot skin, and the liquid composition of clearance incasement can be changed, greatly improves the cleaning efficiency and the cleaning performance to the diabetes patient foot moreover, alleviates medical personnel's working strength.

Drawings

Fig. 1 is a perspective view of a diabetic foot care device according to an embodiment.

FIG. 2 is a perspective view of another perspective of the diabetic foot care device of FIG. 1.

Fig. 3 is a partially enlarged view of a portion a in fig. 1.

FIG. 4 is a flow chart illustrating steps in a method of using a diabetic foot care device according to one embodiment.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention relates to a diabetic foot nursing device. For example, the diabetic foot care device includes a waste water tank, a support assembly, a cleaning tank, and an output assembly. For example, the waste water tank is supported on the ground, a foot supporting surface is formed at the top of the waste water tank, a plurality of water seepage holes are formed in the foot supporting surface, and the cleaning tank is supported on the waste water tank through the supporting component. For example, a cleaning cavity is formed inside the cleaning box, and the cleaning cavity is used for containing physiological saline. For example, a heating film is embedded in the side wall of the cleaning box, a control panel is arranged on the side wall of the cleaning box, and a circuit structure inside the control panel is electrically connected with the heating film. For example, the output assembly comprises a main flow bent pipe and a flexible cleaning pipe, the main flow bent pipe is convexly arranged on the side wall of the cleaning box and is communicated with the cleaning cavity, and the end part of the main flow bent pipe extends towards the waste water box. For example, the flexible cleaning pipe is connected to the middle of the main flow bent pipe, and the end of the flexible cleaning pipe is provided with an adjusting nozzle.

Referring to fig. 1 to 3, a diabetic foot nursing device includes a waste water tank 10, a supporting component 20, a cleaning tank 30 and an output component 40, the waste water tank 10 is supported on the ground, a foot supporting surface 11 is formed at the top of the waste water tank 10, a plurality of water seepage holes 111 are formed on the foot supporting surface 11, the cleaning tank 30 is supported on the waste water tank 10 through the supporting component 20, a cleaning cavity is formed inside the cleaning tank 30 and is used for containing physiological saline, a heating film is embedded in the side wall of the cleaning tank 30, a control panel 31 is arranged on the side wall of the cleaning tank 30, a circuit structure inside the control panel 31 is electrically connected with the heating film, the output component 40 includes a main flow bent pipe 41 and a flexible cleaning pipe 43, the main flow bent pipe 41 is convexly arranged on the side wall of the cleaning tank 30 and is communicated with the cleaning cavity, the end of the main flow bent pipe 41 extends towards the waste water tank 10, the flexible cleaning pipe 43 is connected to the middle of the main flow bent pipe 41, the end of the flexible cleaning tube 43 is provided with an adjustment nozzle.

When the diabetic foot care apparatus is used, the cleaning box 30 is filled with physiological saline, and the control panel 31 controls the heating film to heat the physiological saline to a predetermined temperature, for example, 37 ℃. The patient supports his feet on the foot support surface 11 at the top of waste water tank 10; the physiological saline in the cleaning box 30 is led out by the flexible cleaning pipe 43, and the physiological saline is sprayed to the feet of the patient by adjusting the nozzle to carry out the cleaning operation. Sufficient nursing device of diabetes can provide homothermal normal saline, avoids the stimulation to patient's foot skin, and the liquid composition in the cleaning box 30 can be changed, greatly improves the cleaning efficiency and the cleaning performance to the diabetes patient foot moreover, alleviates medical personnel's working strength.

For example, to facilitate collection of cleaning waste water, the top periphery of waste water tank 10 is convexly provided with retaining ribs 12, and retaining ribs 12 surround the periphery of foot-supporting surface 11. The protective rib 12 is a flexible rib, and the plurality of water seepage holes 111 are all circular holes. The control panel 31 is a rectangular panel, a plurality of keys 311 are arranged on the control panel 31, and the main flow bent pipe 41 is arranged adjacent to the control panel 31. A foot gap 13 is formed between the waste water tank 10 and the cleaning tank 30 and is used for extending into feet, and a drain pipe 14 is convexly arranged at the bottom of the side wall of the waste water tank 10. A liquid collecting cavity is formed in the waste water tank 10 and communicated with the liquid discharge pipe 14, and the plurality of water seepage holes 111 are communicated with the liquid collecting cavity. By providing the holding rib 12, the waste water after cleaning can be prevented from overflowing around by the holding rib 12 on the one hand, and on the other hand, by providing the holding rib 12 as a flexible rib, the foot of the patient can be prevented from being cut.

For example, in order to provide better tactile sensation, the foot supporting surface 11 is attached with a cleaning film layer, the cleaning film layer is provided with a plurality of alignment holes, and the alignment holes are aligned with the water seepage holes 111 respectively. The foot-supporting surface 11 includes a water permeable area 112 and a sealing area 114 adjacent to each other, a plurality of water permeable holes 111 are formed on the water permeable area 112, the sealing area 114 is adjacent to one side of the support member 20, and the cleaning film is detachably attached to the water permeable area 112 and exposes the sealing area 114. The main flow bent pipe 41 includes a connecting pipe portion 411 and a liquid outlet pipe portion 413, the connecting pipe portion 411 is protruded on the side wall of the cleaning box 30, and the liquid outlet pipe portion 413 is vertically connected to an end portion of the connecting pipe portion 411 and extends toward the foot supporting surface 11. Through setting up clean rete, can improve the support flexibility to patient's foot. And when not using, can tear clean rete and remove to on locating foot holding surface 11 with new clean rete, make this new clean rete skew towards sealed region 114, so that a plurality of alignment holes misplace with a plurality of infiltration holes 111 respectively, realize the sealed to waste water tank 10 top, and then improve waste water tank 10's sealing performance.

For example, it is particularly important that support assembly 20 lowers cleaning tank 30 after use, and that the bottom of discharge pipe portion 413 be recessed with an arcuate support groove 4135 for engaging the surface of discharge pipe 14 to support main flow elbow 41 and cleaning tank 30 with discharge pipe 14. A plurality of auxiliary rods 4138 are respectively provided at opposite sides of the liquid outlet pipe portion 413, the plurality of auxiliary rods 4138 at each side are spaced apart from each other, and a winding gap is formed between every adjacent two auxiliary rods 4138 for winding the flexible cleaning pipe 43 when not in use. For example, in order to facilitate the cleaning box 30 to be lowered after the waste water box is used, so as to save the volume, the top of the waste water box 10 is further concavely provided with a strip-shaped positioning groove 15, the positioning groove 15 is arranged on the water seepage area 112 and is adjacent to the sealing area 114, one side of the positioning groove 15 facing the sealing area 114 is provided with an arc-shaped guide surface, the support component 20 comprises a blocking belt 21, an inserting frame 22, a first plate part 23, a middle plate part 24 and a second plate part 25, the blocking belt 21 is an elastic belt, one end of the blocking belt 21 is connected to the cleaning box 30, the other end of the blocking belt 21 is connected to the cleaning box 30, and the middle of the blocking belt 21 is blocked at one side of the foot gap 13, so. For example, the inserting frame 22 includes a connecting rod portion 221, a main body rod portion 222, three inserting rods 223 and an aligning ring 224, one end of the connecting rod portion 221 is connected to the middle of the blocking belt 21, the middle of the main body rod portion 222 is connected to the other end of the connecting rod portion 221, the three inserting rods 223 are fixed to the main body rod portion 222 at intervals, the three inserting rods 223 are all perpendicular to the main body rod portion 222, the aligning ring 224 is disposed in the middle of the main body rod portion 222, and a central axis of the aligning ring 224 is parallel to a length direction of the main body rod portion 222. The first plate portion 23 is fixed on the retaining rib 12, the opposite ends of the middle plate portion 24 are respectively and rotatably connected to the first plate portion 23 and the second plate portion 25, one end of the second plate portion 25, which is far away from the middle plate portion 24, is fixedly connected to the bottom of the cleaning box 30, and the bottom of the cleaning box 30 is further provided with a strip-shaped clamping groove which is opposite to the second plate portion 25. The first plate portion 23 has a length equal to that of the second plate portion 25 and is smaller than that of the intermediate plate portion 24. The first plate portion 23, the middle plate portion 24 and the second plate portion 25 are all provided with a transverse insertion hole 241, and the three insertion rods 223 of the insertion frame 22 are respectively inserted into the transverse insertion hole 241 of the first plate portion 23, the transverse insertion hole 241 of the middle plate portion 24 and the transverse insertion hole 241 of the second plate portion 25, so that the first plate portion 23, the middle plate portion 24 and the second plate portion 25 are fixedly held on a straight line to support the cleaning box 30.

After cleaning, when the cleaning box 30 needs to be folded, the inserting frame 22 is pulled out, the first plate portion 23, the middle plate portion 24 and the second plate portion 25 are folded into an N shape, so that the top end of the first plate portion 23 is pushed into the clamping groove of the cleaning box 30, the bottom end of the second plate portion 25 is pushed into the positioning groove 15 of the waste water box 10, the height of the cleaning box 30 is reduced, and meanwhile, the main flow bent pipe 41 protrudes to the outer side of the foot supporting surface 11 of the waste liquid box. The two insertion rods 223 of the insertion frame 22 are respectively used for being inserted into the transverse insertion holes 241 of the first plate portion 23 and the transverse insertion holes 241 of the second rod portion, and the other insertion rod 223 is exposed above the foot supporting surface 11. In this case, main flow bent pipe 41 is supported by discharge pipe 14, and a plurality of auxiliary levers 4138 are positioned above foot supporting surface 11; the insertion frame 22 is used for pulling the middle part of the blocking belt 21 to protrude towards the foot gap 13, so that the central axis of the alignment ring 224 extends towards the blocking belt 21; the middle part of the flexible cleaning pipe 43 is wound in the winding gap of the main flow bent pipe 41, the tail end of the flexible cleaning pipe 43 is wound on the insertion rod 223, and the end part of the flexible cleaning pipe 43 is inserted into the alignment ring 224, so that the end part of the flexible cleaning pipe 43 is blocked on the blocking belt 21, and the end part of the flexible cleaning pipe 43 is sealed by the blocking belt 21. Through setting up supporting component 20, on the one hand conveniently reduce the height of cleaning box 30 to receive and fold cleaning box 30, on the other hand can utilize the structure location cleaning box 30 of N font, and can utilize mainstream return bend 41 and insert the redundant inserted bar 223 winding of frame 22 flexible cleaning pipe 43, through the setting of aiming at circle 224, on the one hand can the fixed flexible cleaning pipe 43, on the other hand can make flexible cleaning pipe 43 aim at and prop up and establish the area 21 on keeping off, with the terminal of sealed flexible cleaning pipe 43, prevent that the dust from getting into.

Referring to fig. 4, the present invention also provides a method for using the above diabetic foot care device. Specifically, the use method comprises the following steps:

in step S101, the cleaning box 30 is filled with saline, and the control panel 31 controls the heating film to heat the saline to a predetermined temperature;

in step S102, the patient puts the foot into the foot space 13 and supports the foot on the cleaning film;

in step S103, the physiological saline in the cleaning tank 30 is led out by the flexible cleaning pipe 43, the physiological saline is sprayed to the feet of the patient by the adjusting nozzle to perform the cleaning operation, and the cleaned wastewater flows into the liquid collecting cavity of the waste liquid tank through the plurality of water seepage holes 111; and

in step S104, the cleaning film is removed, and a new cleaning film is attached to the foot supporting surface 11, such that the new cleaning film is shifted toward the sealing region 114, and the alignment holes are respectively dislocated with the water seepage holes 111, thereby sealing the top of the waste water tank 10.

The method of use further comprises a preparation step prior to step S101. The preparation steps specifically comprise: straightening the first plate portion 23, the intermediate plate portion 24 and the second plate portion 25 to tighten the belt 21 on one side of the waste liquid tank; the three insertion rods 223 of the insertion frame 22 are respectively inserted into the transverse insertion holes 241 of the first plate portion 23, the transverse insertion holes 241 of the middle plate portion 24 and the transverse insertion holes 241 of the second plate portion 25, so that the first plate portion 23, the middle plate portion 24 and the second plate portion 25 are fixed on a straight line to support the cleaning box 30.

The method of use further includes an ending step after step S104. The ending step specifically comprises:

folding the first plate part 23, the middle plate part 24 and the second plate part 25 into an N shape, so that the top end of the first plate part 23 is pushed into the clamping groove of the cleaning box 30, the bottom end of the second plate part 25 is pushed into the positioning groove 15 of the waste water box 10, the height of the cleaning box 30 is reduced, and meanwhile, the main flow bent pipe 41 protrudes to the outer side of the foot supporting surface 11 of the waste water box; inserting the two insertion rods 223 of the insertion frame 22 into the lateral insertion holes 241 of the first plate portion 23 and the lateral insertion holes 241 of the second rod portion, respectively, and exposing the other insertion rod 223 above the foot supporting surface 11; supporting main flow elbow 41 on discharge pipe 14 such that plurality of auxiliary rods 4138 are positioned above foot-supporting surface 11; the insertion frame 22 is pulled to hold the middle part of the blocking belt 21 to protrude towards the foot gap 13, and the central axis of the alignment ring 224 extends towards the blocking belt 21; the middle part of the flexible cleaning pipe 43 is wound in the winding gap of the main flow bent pipe 41, the tail end of the flexible cleaning pipe 43 is wound on the insertion rod 223, and the end part of the flexible cleaning pipe 43 is inserted into the alignment ring 224, so that the end part of the flexible cleaning pipe 43 is blocked on the blocking belt 21, and the end part of the flexible cleaning pipe 43 is sealed by the blocking belt 21. Through setting up supporting component 20, on the one hand conveniently reduce the height of cleaning box 30 to receive and fold cleaning box 30, on the other hand can utilize the structure location cleaning box 30 of N font, and can utilize mainstream return bend 41 and insert the redundant inserted bar 223 winding of frame 22 flexible cleaning pipe 43, through the setting of aiming at circle 224, on the one hand can the fixed flexible cleaning pipe 43, on the other hand can make flexible cleaning pipe 43 aim at and prop up and establish the area 21 on keeping off, with the terminal of sealed flexible cleaning pipe 43, prevent that the dust from getting into.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.