The utility model provides a retractable flute needle for ophthalmology, which comprises a flute needle rod, a visible standard liquid tube and a needle head. The visible standard liquid tube is located on the external side wall of the flute needle body, and the corresponding flute needle body is connected with a silicon rubber tube; the needle head is connected with the flute needle rod through a rotary expansion device, and extends to the cavity of the flute needle rod, and is connected with the silicon rubber tube in the cavity of the flute needle rod; the rotary expansion The device comprises a connecting thread ring, a rotating wheel disc, a fixing ring and a pushing spring, the connecting thread ring is matched with the external thread at the end of the flute needle rod, the rotating wheel disc rotating sleeve is at the other end of the connecting thread ring, the fixing ring and the pushing spring are built between the connecting thread ring and the rotating wheel disc, the needle head is successively inserted through the holes in the middle of the fixing ring and the pushing spring, and is stably fixed by the fixing ring. The utility model has the advantages of simple structure, stepless expansion of the needle head can be realized through the screw, no limitation of the eye axis during the operation, and convenient use.
【技术实现步骤摘要】
一种眼科用可伸缩的笛针
本技术属于医疗器械设备领域,具体涉及一种眼科用可伸缩的笛针。
技术介绍
目前,现代玻璃体视网膜手术技术越来越普及,大量因视网膜脱离失明的患者得以及时有效的治疗。笛针是玻璃体手术不可缺少的器械之一,在玻璃体手术中它可用来进行气液交换、排除眼内积血、行玻璃体后脱离、复位视网膜等。然而,现有的笛针长度是固定的,但是有些高度近视眼球直径超出了常规笛针的长度,致使气液交换不充分,会导致术中眼内液体残留,尤其是重水残留对视网膜有毒性作用,视网膜脱离复位时视网膜复位不佳,增加视网膜脱离复发的机率。
技术实现思路
针对现有技术中的不足之处,本技术提供一种眼科用笛针。为了上述目的,本技术技术方案如下:一种眼科用可伸缩的笛针,包括笛针杆、可视标液管和针头,所述可视标液管位于笛针体的外部侧壁上,对应笛针体内连有硅胶管;所述针头通过旋转伸缩装置与笛针杆相连接,一直延伸至笛针杆的腔内,与笛针杆腔内的硅胶管相通;所述旋转伸缩装置包括连接螺纹圈、旋转轮盘、固定圈和推动弹簧,连接螺纹圈与笛针杆端部外螺纹相适配连接,旋转轮盘旋套在连接螺纹圈另一端,固定圈和推动弹簧内置于连接螺纹圈和旋转轮盘之间,针头依次穿插过固定圈和推动弹簧中部孔洞,并通过固定圈稳定套固。进一步地,所述笛针杆内还设有与硅胶管连接的冲洗管,一直延伸至末端,笛针杆末端设有翻盖,盖住冲洗管口。进一步地,所述可视标液管设有一个抽取孔。进一步地,所述针头的伸缩长度范围为5mm~10mm。进一步地,所述旋 ...
【技术保护点】
1.一种眼科用可伸缩的笛针,包括笛针杆、可视标液管和针头,其特征在于:所述可视标液管位于笛针体的外部侧壁上,对应笛针体内连有硅胶管;所述针头通过旋转伸缩装置与笛针杆相连接,一直延伸至笛针杆的腔内,与笛针杆腔内的硅胶管相通;所述旋转伸缩装置包括连接螺纹圈、旋转轮盘、固定圈和推动弹簧,连接螺纹圈与笛针杆端部外螺纹相适配连接,旋转轮盘旋套在连接螺纹圈另一端,固定圈和推动弹簧内置于连接螺纹圈和旋转轮盘之间,针头依次穿插过固定圈和推动弹簧中部孔洞,并通过固定圈稳定套固。/n
【技术特征摘要】
1.一种眼科用可伸缩的笛针,包括笛针杆、可视标液管和针头,其特征在于:所述可视标液管位于笛针体的外部侧壁上,对应笛针体内连有硅胶管;所述针头通过旋转伸缩装置与笛针杆相连接,一直延伸至笛针杆的腔内,与笛针杆腔内的硅胶管相通;所述旋转伸缩装置包括连接螺纹圈、旋转轮盘、固定圈和推动弹簧,连接螺纹圈与笛针杆端部外螺纹相适配连接,旋转轮盘旋套在连接螺纹圈另一端,固定圈和推动弹簧内置于连接螺纹圈和旋转轮盘之间,针头依次穿插过固定圈和推动弹簧中部孔洞,并通过固定圈稳定套固。
2.根据权利要求1所述的眼科用可伸缩的笛针,其特征在于,所述笛针杆内还设有与硅胶...
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