CN219595390U - A pressure syringe for easy extraction - Google Patents
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- CN219595390U CN219595390U CN202320278334.XU CN202320278334U CN219595390U CN 219595390 U CN219595390 U CN 219595390U CN 202320278334 U CN202320278334 U CN 202320278334U CN 219595390 U CN219595390 U CN 219595390U
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- 238000000605 extraction Methods 0.000 title claims abstract description 7
- 210000001742 aqueous humor Anatomy 0.000 abstract description 42
- 230000004410 intraocular pressure Effects 0.000 abstract description 16
- 210000002159 anterior chamber Anatomy 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 210000005252 bulbus oculi Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 208000015181 infectious disease Diseases 0.000 description 3
- 208000001953 Hypotension Diseases 0.000 description 2
- 210000004087 cornea Anatomy 0.000 description 2
- 210000000695 crystalline len Anatomy 0.000 description 2
- 230000036543 hypotension Effects 0.000 description 2
- 230000002458 infectious effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004493 normal intraocular pressure Effects 0.000 description 2
- 244000052769 pathogen Species 0.000 description 2
- 230000001717 pathogenic effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 210000004127 vitreous body Anatomy 0.000 description 2
- 208000023275 Autoimmune disease Diseases 0.000 description 1
- 208000001860 Eye Infections Diseases 0.000 description 1
- 208000031354 Hyphema Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 206010046851 Uveitis Diseases 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001746 atrial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 210000004240 ciliary body Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 210000003722 extracellular fluid Anatomy 0.000 description 1
- 208000011323 eye infectious disease Diseases 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000001585 trabecular meshwork Anatomy 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 210000001745 uvea Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
技术领域technical field
本实用新型涉及注射器技术领域，更具体地说，它涉及一种方便抽取的压力注射器。The utility model relates to the technical field of syringes, in particular to a pressure syringe which is convenient to extract.
背景技术Background technique
眼压(Intraocular pressure，IOP)，又称为眼内压，是眼球内容物对眼球内壁的压力。在一天内的不同时间眼内压会发生变化，但一般都保持在安全范围。正常人的眼压范围为11～21mmHg(1.47～2.79kPa)，以维持眼球的正常形态，使各屈光介质界面保持良好的屈光状态。眼球的内容物有房水(Aqueous humour)、晶状体、玻璃体，其中对眼压影响最大的是房水。房水为无色透明的液体，属于组织液的一种，充满前后房角膜和虹膜之间，总量仅有0.15～0.3mL(平均0.25mL左右)，它具有营养虹膜、角膜和晶状体的作用。房水还具有一定的折光功能，它与角膜、晶状体和玻璃体共同组成眼球折光系统。房水不断由睫状体产生，然后通过瞳孔进入前房，再由前房角的小梁网排出眼球，进入血液循环。Intraocular pressure (IOP), also known as intraocular pressure, is the pressure of the contents of the eyeball on the inner wall of the eyeball. Intraocular pressure varies at different times of the day, but generally remains within a safe range. The intraocular pressure range of normal people is 11-21mmHg (1.47-2.79kPa), in order to maintain the normal shape of the eyeball and maintain a good refractive state at the interface of each refractive medium. The contents of the eyeball include aqueous humor (Aqueous humour), lens, and vitreous body, among which the aqueous humor has the greatest impact on intraocular pressure. Aqueous humor is a colorless and transparent liquid, which is a kind of interstitial fluid. It fills between the anterior and posterior chamber cornea and iris, and the total amount is only 0.15-0.3mL (about 0.25mL on average). Aqueous humor also has a certain refraction function, and it forms the eyeball refraction system together with the cornea, lens and vitreous body. Aqueous humor is continuously produced by the ciliary body, then enters the anterior chamber through the pupil, and then is discharged from the eyeball through the trabecular meshwork of the anterior chamber angle and enters the blood circulation.
临床上为了眼部感染房水采样分析，或在对某些眼科疾病的诊断中，经常需要通过房水采样进行病原培养，以及细胞学、病原DNA等方面的检测，以鉴别感染性、非感染性葡萄膜炎及伪装综合症。感染、自身免疫性疾病(患者的免疫系统攻击其自身的组织)、或其他未知因素都可导致葡萄膜的炎症等。除此以外，前房穿刺还常应用于眼化学碱烧伤及前房积血等情况下的放液治疗。Clinically, for the analysis of aqueous humor sampling for eye infection, or in the diagnosis of certain ophthalmic diseases, it is often necessary to conduct pathogen culture, cytology, and pathogen DNA testing through aqueous humor sampling to identify infectious and non-infectious Uveitis and Masquerading Syndrome. Inflammation of the uvea can be caused by infection, autoimmune disease (in which the patient's immune system attacks its own tissue), or other unknown factors. In addition, anterior chamber puncture is also often used in the treatment of fluid drainage in cases of ocular chemical alkali burns and hyphema.
因为房水要保持一定的眼压，为了在抽取房水时检测眼压，所以现有技术在活塞上设置压力传感器。然而这样的方案导致抽取房水需要手动抽取，太过麻烦，且注射器为一次性用品，设置有压力传感器的注射器成本太高。Because the aqueous humor needs to maintain a certain intraocular pressure, in order to detect the intraocular pressure when the aqueous humor is drawn, a pressure sensor is provided on the piston in the prior art. However, such a solution requires manual extraction of aqueous humor, which is too troublesome, and the syringe is a disposable product, and the cost of the syringe provided with the pressure sensor is too high.
因此，如何方便地抽取房水，且不会让眼压过低正是本申请所要解决的技术问题。Therefore, how to extract aqueous humor conveniently without causing hypotension is the technical problem to be solved by this application.
实用新型内容Utility model content
针对现有技术存在的不足，提供一种方便抽取的压力注射器，通过该方便抽取的压力注射器可以根据压力瓣膜的控制眼压，避免眼压过低。Aiming at the deficiencies in the prior art, a conveniently extracted pressure syringe is provided, through which the intraocular pressure can be controlled according to the pressure valve to avoid hypotension.
为实现上述目的，提供了如下技术方案：In order to achieve the above purpose, the following technical solutions are provided:
一种方便抽取的压力注射器，其包括有针筒和针头，针头设置在针筒的一端，针筒与针头连接的一端设置有压力瓣膜。A pressure injector that is convenient to extract includes a syringe and a needle, the needle is arranged at one end of the syringe, and a pressure valve is arranged at the end of the syringe connected with the needle.
综上所述，上述技术方案具有以下有益效果：针筒的一端连接针头，另一端与外部连接，当将针头从角巩膜缘穿刺进入前房后，因为前房存在眼压，所以房水会从针头向针筒方向流动，针筒与针头连接的一端设置有压力瓣膜，压力瓣膜开启需要一定压力，即当房水的压力大于压力瓣膜开启的压力阈值时，则房水会从压力瓣膜处渗出到针筒内，从而完成房水的抽取。具体的，压力瓣膜开启的压力阈值大于人眼压范围的最低值，所以当眼内压小于11mmHg时，则压力瓣膜不会打开，房水也不会流入针筒内，从而让房水保持在正常的眼压范围之内。压力瓣膜开启的压力阈值取决于压力瓣膜的材质和厚度，相同材质的压力瓣膜越薄，则压力阈值越小。To sum up, the above-mentioned technical solution has the following beneficial effects: one end of the syringe is connected to the needle, and the other end is connected to the outside. When the needle is punctured from the corneoscleral limbus into the anterior chamber, because there is intraocular pressure in the anterior chamber, the aqueous humor will It flows from the needle to the needle cylinder. There is a pressure valve at the end connecting the needle cylinder and the needle. The pressure valve needs a certain pressure to open, that is, when the pressure of the aqueous humor is greater than the pressure threshold for the pressure valve to open, the aqueous humor will flow from the pressure valve. Seep into the syringe to complete the extraction of aqueous humor. Specifically, the pressure threshold for opening the pressure valve is greater than the lowest value of the human intraocular pressure range, so when the intraocular pressure is less than 11mmHg, the pressure valve will not open, and the aqueous humor will not flow into the syringe, so that the aqueous humor is kept at Within the normal intraocular pressure range. The pressure threshold at which the pressure valve opens depends on the material and thickness of the pressure valve. The thinner the pressure valve of the same material, the smaller the pressure threshold.
附图说明Description of drawings
图1为一种方便抽取的压力注射器的针筒结构示意图；Fig. 1 is a schematic diagram of the syringe structure of a pressure injector that is convenient to extract;
图2为一种方便抽取的压力注射器的锥形筒结构示意图；FIG. 2 is a schematic structural view of a tapered barrel of a pressure injector that is convenient to extract;
图3为一种方便抽取的压力注射器的A-A截面图示意图；Fig. 3 is a schematic diagram of an A-A cross-sectional view of a conveniently extracted pressure injector;
图4为一种方便抽取的压力注射器的B-B截面图示意图；Fig. 4 is a schematic diagram of a B-B cross-sectional view of a conveniently extracted pressure injector;
图5为一种方便抽取的压力注射器的C-C截面图示意图；Fig. 5 is a schematic diagram of a C-C cross-sectional view of a conveniently extracted pressure injector;
图6为一种方便抽取的压力注射器的出气孔结构示意。Fig. 6 is a schematic diagram of the air outlet structure of a conveniently extracted pressure injector.
附图标记：10、针筒；11、锥形筒；12、圆柱筒；20、针头；30、压力瓣膜；40、控制盖；41、控制腔；42、开口；43、出气孔；44、卡合沿；50、控制块；51、匹配孔；52、卡合块；60、按压块；70、弹性件。Reference signs: 10, syringe; 11, conical barrel; 12, cylindrical barrel; 20, needle; 30, pressure valve; 40, control cover; 41, control cavity; 42, opening; 43, vent hole; 44, 50, control block; 51, matching hole; 52, engaging block; 60, pressing block; 70, elastic piece.
具体实施方式Detailed ways
下面结合附图和实施例，对本实用新型进一步详细说明。其中相同的零部件用相同的附图标记表示。需要说明的是，下面描述中使用的词语“前”、“后”、“左”、“右”、“上”和“下”指的是附图中的方向，词语“底面”和“顶面”、“内”和“外”分别指的是朝向或远离特定部件几何中心的方向。Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail. Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "bottom" and "top "Face", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
如图1-图3所示，一种方便抽取的压力注射器，其包括有针筒10和针头20，针头20设置在针筒10的一端，针筒10与针头20连接的一端设置有压力瓣膜30。针筒10的一端连接针头20，另一端与外部连接，当将针头20从角巩膜缘穿刺进入前房后，因为前房存在眼压，所以房水会从针头20向针筒10方向流动，针筒10与针头20连接的一端设置有压力瓣膜30，压力瓣膜30开启需要一定压力，即当房水的压力大于压力瓣膜30开启的压力阈值时，则房水会从压力瓣膜30处渗出到针筒10内，从而完成房水的抽取。具体的，压力瓣膜30开启的压力阈值大于人眼压范围的最低值，所以当眼内压小于11mmHg时，则压力瓣膜30不会打开，房水也不会流入针筒10内，从而让房水保持在正常的眼压范围之内。压力瓣膜30开启的压力阈值取决于压力瓣膜30的材质和厚度，相同材质的压力瓣膜30越薄，则压力阈值越小。As shown in Figures 1-3, a pressure syringe that is convenient to extract includes a syringe 10 and a needle 20, the needle 20 is arranged at one end of the syringe 10, and the end of the syringe 10 connected to the needle 20 is provided with a pressure valve 30. One end of the syringe 10 is connected to the needle 20, and the other end is connected to the outside. When the needle 20 is punctured from the corneoscleral limbus into the anterior chamber, because there is intraocular pressure in the anterior chamber, the aqueous humor will flow from the needle 20 to the syringe 10. The end of the syringe 10 connected to the needle 20 is provided with a pressure valve 30, which requires a certain pressure to open, that is, when the pressure of the aqueous humor is greater than the pressure threshold for the pressure valve 30 to open, the aqueous humor will leak from the pressure valve 30 into the syringe 10 to complete the extraction of aqueous humor. Specifically, the pressure threshold for opening the pressure valve 30 is greater than the lowest value of the human intraocular pressure range, so when the intraocular pressure is less than 11mmHg, the pressure valve 30 will not open, and the aqueous humor will not flow into the syringe 10, so that the atrial Water stays within normal intraocular pressure range. The pressure threshold at which the pressure valve 30 opens depends on the material and thickness of the pressure valve 30 , the thinner the pressure valve 30 of the same material, the smaller the pressure threshold.
针筒10包括有锥形筒11和圆柱筒12，锥形筒11呈锥形，锥形筒11较小的一端与针头20连接，较大的一端与圆柱筒12连接，压力瓣膜30设置在锥形筒11较小的一端。因为房水采集的容量较少，所以通过设置锥形筒11，房水从针头20进入后首先进入锥形筒11，锥形筒11和圆柱筒12均为透明材质，在锥形筒11内可以较好地观察房水的容量。圆柱筒12用于供医生抓握。The syringe 10 includes a conical barrel 11 and a cylindrical barrel 12, the conical barrel 11 is conical, the smaller end of the conical barrel 11 is connected to the needle 20, the larger end is connected to the cylindrical barrel 12, and the pressure valve 30 is arranged on The smaller end of the tapered barrel 11. Because the volume of aqueous humor collection is small, by setting the conical cylinder 11, the aqueous humor enters the conical cylinder 11 first after entering from the needle 20. Both the conical cylinder 11 and the cylindrical cylinder 12 are made of transparent materials. Can better observe the volume of aqueous humor. The cylinder 12 is used for grasping by a doctor.
锥形筒11的容积大于等于0.05毫升，且小于等于0.1毫升。房水采取的量通常在0.05毫升到0.1毫升之间，采取0.1毫升的居多，将锥形筒11的容积设置在0.05-0.1毫升之间，可以在采取时方便地观察房水采取的量是否达到要求。因为锥形筒11和圆柱筒12的连接处具有缝隙，方便观察。优选的，锥形筒11的容积为0.1毫升。The volume of the conical cylinder 11 is greater than or equal to 0.05 milliliters and less than or equal to 0.1 milliliters. The amount of aqueous humor taken is usually between 0.05 milliliters and 0.1 milliliters, most of which are 0.1 milliliters, and the volume of the conical cylinder 11 is set between 0.05-0.1 milliliters, so that it is convenient to observe whether the taken amount of aqueous humor is Meet the requirements. Because there is a gap at the junction of the conical barrel 11 and the cylindrical barrel 12, it is convenient for observation. Preferably, the volume of the conical cylinder 11 is 0.1 ml.
压力瓣膜30设置有四片，四片压力瓣膜30合围形成圆形将锥形筒11较小一端的筒口围住，四片压力瓣膜30分别与锥形筒11的筒口连接。四片压力瓣膜30成形状大小均相同的扇形，扇形的弧度为90度，从而能够合围形成圆形，四片压力瓣膜30的弧形边沿和锥形筒11较小一端的筒口连接，四片压力瓣膜30之间相互接触但不连接，从而形成具有一定压力的隔膜。相应的，其他数量的压力瓣膜30则具有不同的扇形弧度，从而满足能够合围成圆形，四片压力瓣膜30为优选。若只有一个压力瓣膜30，则一片压力瓣膜30呈圆形，一片压力瓣膜30的弧形边沿不完全与锥形筒11连接，其与锥形筒11连接的弧度同样影响压力阈值的大小，根据影响压力阈值的条件调整压力瓣膜30，从而达到要求。Four pressure valves 30 are provided, and the four pressure valves 30 encircle and form a circle to surround the mouth of the smaller end of the tapered cylinder 11 , and the four pressure valves 30 are respectively connected to the mouth of the tapered cylinder 11 . The four pressure valves 30 are fan-shaped with the same shape and size, and the arc of the fan is 90 degrees, so that they can form a circle. The pressure valves 30 are in contact with each other but not connected, thereby forming a diaphragm with a certain pressure. Correspondingly, other numbers of pressure valves 30 have different fan-shaped radians, so as to be able to encircle and form a circle, and four pressure valves 30 are preferred. If there is only one pressure valve 30, then a piece of pressure valve 30 is circular, and the arc edge of a piece of pressure valve 30 is not completely connected with the conical cylinder 11, and the radian of its connection with the conical cylinder 11 also affects the size of the pressure threshold, according to Conditions affecting the pressure threshold adjust the pressure valve 30 to meet the requirements.
如图4-图6所示，圆柱筒12上设置有可分离的控制盖40，控制盖40内开设有控制腔41，控制腔41在控制盖40的侧壁处形成有开口42，控制盖40沿圆柱筒12的轴向开设有出气孔43，出气孔43与控制腔41连通；控制腔41内设置有控制块50，控制块50从开口42向外延伸出有按压块60，控制块50远离按压块60的一侧设置有弹性件70，控制块50沿圆柱筒12的轴向开设有匹配孔51。控制块50用于控制圆柱筒12是否与外界连通，当弹性件70处于自然状态时，则匹配孔51与出气孔43对齐，圆柱筒12通过出气孔43和匹配孔51与外界连通，当通过按压块60将控制块50推入控制腔41时，则匹配孔51与出气孔43错开，圆柱筒12则与外界隔绝，形成相对密封的空间。圆柱筒12与外界相通时，则房水可以通过针头20进入到圆柱筒12内，当圆柱筒12与外界隔绝时，则房水不能通过针头20进入到圆柱筒12内，因为控制块50是沿圆柱筒12周向所在的平面上移动的，所以在控制的过程中不会影响圆柱筒12内的压力，圆柱筒12内的房水不会因为控制块50的移动而被推出或吸入更多。As shown in Figures 4-6, a detachable control cover 40 is provided on the cylinder 12, and a control cavity 41 is opened in the control cover 40, and an opening 42 is formed in the control cavity 41 at the side wall of the control cover 40. The control cover 40 is provided with an air outlet 43 along the axial direction of the cylinder 12, and the air outlet 43 communicates with the control chamber 41; the control chamber 41 is provided with a control block 50, and the control block 50 extends outward from the opening 42 with a pressing block 60, the control block The side of the control block 50 away from the pressing block 60 is provided with an elastic member 70 , and the control block 50 is provided with a matching hole 51 along the axial direction of the cylinder 12 . The control block 50 is used to control whether the cylinder 12 communicates with the outside world. When the elastic member 70 is in a natural state, the matching hole 51 is aligned with the air outlet hole 43, and the cylinder 12 communicates with the outside world through the air outlet 43 and the matching hole 51. When the pressing block 60 pushes the control block 50 into the control cavity 41, the matching hole 51 and the air outlet hole 43 are staggered, and the cylinder 12 is isolated from the outside, forming a relatively sealed space. When the cylinder 12 is connected to the outside world, the aqueous humor can enter the cylinder 12 through the needle 20; when the cylinder 12 is isolated from the outside world, the aqueous humor cannot enter the cylinder 12 through the needle 20, because the control block 50 is Move along the plane where the cylinder 12 is located, so the pressure in the cylinder 12 will not be affected during the control process, and the aqueous humor in the cylinder 12 will not be pushed out or inhaled more due to the movement of the control block 50 many.
使用时，医生先控制针头20刺入前房，此时圆柱筒12与外界相同，房水的压力若大于压力瓣膜30的压力阈值时，则房水就会进入到圆柱筒12内，当医生判断采集的房水容量达到要求时，则将按压快按下，控制房水停止流入到圆柱筒12内，最后则将针头20拔出。拔出针头20后需要一直将按压块60压住，让圆柱筒12保持在相对密封的环境，这样圆柱筒12内的房水就不会因为转移时的甩动而流出去，且可以防止外界的污染物进入到圆柱筒12内。需要取出圆柱桶内的房水时，可以将控制盖40取下，放上常规针筒10活塞进行取出，或者通过可以吹气的球囊将空气从出气孔43吹入将房水取出。When in use, the doctor first controls the needle 20 to penetrate the anterior chamber. At this time, the cylinder 12 is the same as the outside world. If the pressure of the aqueous humor is greater than the pressure threshold of the pressure valve 30, the aqueous humor will enter the cylinder 12. When the doctor When it is judged that the collected aqueous humor volume reaches the requirement, the pressure is quickly pressed to control the aqueous humor from flowing into the cylinder 12, and finally the needle 20 is pulled out. After the needle 20 is pulled out, the pressing block 60 needs to be pressed all the time to keep the cylindrical tube 12 in a relatively sealed environment, so that the aqueous humor in the cylindrical tube 12 will not flow out due to the shaking during transfer, and it can prevent the outside world from Pollutants enter the cylinder 12. When the aqueous humor in the cylindrical barrel needs to be taken out, the control cover 40 can be taken off, and the conventional syringe 10 piston can be put on to take out the aqueous humor, or the aqueous humor can be taken out by blowing air through the air outlet 43 through a balloon that can be blown.
控制块50远离按压块60的一侧设置卡合块52，卡合块52用于供弹性件70卡合。卡合块52成圆柱形，弹性件70为弹簧，卡合块52和弹性件70的内径相匹配，从而让弹性件70卡合。An engaging block 52 is provided on a side of the control block 50 away from the pressing block 60 , and the engaging block 52 is used for engaging the elastic member 70 . The engaging block 52 is cylindrical, and the elastic member 70 is a spring. The inner diameters of the engaging block 52 and the elastic member 70 match, so that the elastic member 70 is engaged.
控制盖40与圆柱筒12连接的一端设置有卡合沿44，卡合沿44用于卡入圆柱筒12。卡合沿44为橡胶或硅胶等材质，卡合沿44的外径略大于圆柱筒12的内径，从而让控制盖40紧密地盖在圆柱筒12上。One end of the control cover 40 connected to the cylindrical barrel 12 is provided with a snap-in edge 44 for snapping into the cylindrical barrel 12 . The engaging edge 44 is made of rubber or silica gel, and the outer diameter of the engaging edge 44 is slightly larger than the inner diameter of the cylinder 12 , so that the control cover 40 is tightly covered on the cylinder 12 .
以上仅是本实用新型的优选实施方式，本实用新型的保护范围并不仅局限于上述实施例，凡属于本实用新型思路下的技术方案均属于本实用新型的保护范围。应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型原理前提下的若干改进和润饰，这些改进和润饰也应视为本实用新型的保护范围。The above are only preferred implementations of the utility model, and the scope of protection of the utility model is not limited to the above-mentioned embodiments, and all technical solutions under the thinking of the utility model all belong to the scope of protection of the utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.
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