CN105877765B - 一种安全式穿刺针 - Google Patents
一种安全式穿刺针 Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150541—Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/15058—Joining techniques used for protective means
- A61B5/150595—Joining techniques used for protective means by snap-lock (i.e. based on axial displacement)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150885—Preventing re-use
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3228—Constructional features thereof, e.g. to improve manipulation or functioning the needle being retracted by a member protruding laterally through a slot in the barrel, e.g. double-ended needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3246—Constructional features thereof, e.g. to improve manipulation or functioning being squeezably deformable for locking or unlocking purposes, e.g. with elliptical cross-section
Abstract
本申请涉及一种安全式穿刺针,主要应用在穿刺采血、输液等血管穿刺领域,该安全式穿刺针包括:外壳、针体、后盖三部分;针体一端设置针头,另一端连接软管;后盖通过螺纹/卡扣与所述外壳连接。本发明的安全式穿刺针可自动回缩,避免医护人员被针刺伤风险,同时双侧触发装置设计,可以避免由于误操作而使针头回缩,同时采用分段式结构,解决了工业化大批量生产的问题。
Description
技术领域
本申请涉及血管穿刺领域,尤其涉及一种安全式穿刺针。
背景技术
医疗机构中,对患者进行血液标本采集、输液时,注射器、采血针等是一种不可缺少的工具,目前,为了医疗安全着想,采血针、注射器等均为一次性使用,避免多次使用带来的交叉感染。
然而,如果采血或者输液后,针头不采取保护措施,仍然会存在扎伤医护人员的风险。目前医院等医疗机构中广泛使用的是对针头套上保护套以保护针头或者防止针头刺伤医护人员的办法,同时也注意到有的采血针采用了针头回缩的技术手段,然而,由于其触发开关为一个,极易在采血过程中因为误操作而使针头回缩,对患者及医护人员造成不便及损失。
发明内容
本发明所要解决的技术问题是:提供一种安全式穿刺针,其主要应用在穿刺采血、输液等血管穿刺领域,可自动回缩,避免医护人员被针刺伤风险,同时双侧触发装置设计,可以避免由于误操作而使针头回缩,同时分段式结构,解决了工业化大批量生产的问题。
为了解决相关技术中存在的技术问题,本申请提供的一种安全式穿刺针采用以下技术方案:
一种安全式穿刺针,该穿刺针包括:外壳、针体、后盖三部分;针体一端设置针头,另一端连接软管;后盖通过螺纹/卡扣与所述外壳连接。
优选地,所述针体由针头、针座、软管构成;针座为圆柱状腔体结构,针座沿针头到软管方向依次设置有弹簧止点、触发臂和止复位臂;触发臂为双侧树枝状结构,具有一定的韧性,并呈向下分叉结构;止复位臂为双侧树枝状结构,具有一定的韧性,并呈向上分叉结构。
优选地,所述外壳上端设置有开孔,所述外壳下端外侧设置有螺纹/卡扣结构,所述开孔和螺纹/卡扣结构之间设置有固定手柄和触发孔;所述开孔直径介于所述弹簧和针座之间;所述触发孔周边设置有触发孔外沿,所述触发孔外沿为内凹结构,或
下端外凸、或上端外凸、或上下外凸;
优选地,所述后盖内侧设置有螺纹/卡扣,后盖内侧还设置有固定锁点,固定锁点为向所述后盖内侧凸起的横档结构。
进一步优选地,所述外壳和后盖沿针体方向的截面图呈圆形、椭圆形、长方形或者正方形。
本申请的有益效果在于:
本发明触发臂为两个对称结构,使用时需要双侧一起操作,可以避免在正常使用时由于误操作而使针体被触发的情况;结合触发臂、止复位臂和固定锁点的结构与位置设计,可以使得穿刺针处于触发状态后,针头回缩,避免误伤医务人员,并且针体处于卡死状态,为一次性使用,达到自毁目的;本发明的后盖与外壳通过螺旋或者卡扣连接,为分离式结构,方便了其产业化的生产。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本发明的实施例,并与说明书一起用于解释本发明的原理。
图1为本申请安全穿刺针的剖面结构示意图。
图2为本申请安全穿刺针的部件分离图。
图3为本申请安全穿刺针的针体。
图4为本申请安全穿刺针的外壳。
图5为本申请安全穿刺针的后盖。
图6为本申请安全穿刺针的触发后示意图。
图7、图8为本申请安全穿刺针其它实施例示意图。
其中,1-外壳,2-针体,3-后盖,11-开孔,12-固定手柄,13-触发孔,14-螺纹/卡扣结构,15-触发孔外沿,21-针头,22-针座,23-软管,24-弹簧止点,25-触发臂,26-止复位臂,27-弹簧,31-固定锁点。
具体实施方式
下面将通过实施例的方式进一步对本申请做出说明,但并未因此将本申请限制在所述实施例的范围内。
图1为本实施例的安全式穿刺针的剖面结构示意图,图2为安全式穿刺针的部件分离图,由图1~2所示,本申请的安全式穿刺针包括:外壳1、针体2、后盖3三部分,其中,所述针体2位于所述外壳1内部,所述针体2一端为针头21,另一端连接软管23,针头21用于穿刺血管,进行血液采集或静脉输液等操作,软管23可以与采血收集器或者输液瓶相连。
图3为安全式穿刺针的针体2,所述针体2由针头21、针座22、软管23连接在一起组成;所述针座22为圆柱状腔体结构,起到支柱作用,所述针座22沿针头21到软管23方向依次设置有弹簧止点24、触发臂25和止复位臂26;所述弹簧止点24固定住弹簧27一端;所述触发臂25为双侧树枝状结构,具有一定的韧性,并呈向下分叉结构;所述止复位臂26为双侧树枝状结构,具有一定的韧性,并呈向上分叉结构。
图4为安全式穿刺针的外壳1,所述外壳1上端开孔11,所述开孔11直径介于弹簧27和针座22之间,用以针头21穿出;所述外壳1下端外侧设置有螺纹/卡扣结构14,可以和所述后盖3连接;所述外壳1开孔11和螺纹/卡扣结构14之间设置有固定手柄12和触发孔13;所述固定手柄12用于操作者方便拿起穿刺针执行穿刺动作或者用于贴合在患者皮肤上,起到固定作用;当穿刺针处于复位状态时,参考图1和图4,所述触发孔13可以露出所述触发臂25的外缘,且,所述触发孔13周边设置有触发孔外沿15,所述触发孔外沿15为内凹结构,方便操作者对触发臂25操作。
图5为安全式穿刺针的后盖3,所述后盖3内侧设置有螺纹/卡扣,可以和所述外壳1连接;所述后盖3内侧还设置有固定锁点31,该固定锁点31为向所述后盖3内侧凸起的横档结构,在针体2被触发后,用以防止针体2上下活动。本申请的后盖3可与外壳1分离,方便产业化生产。
使用时,所述针体2位于复位状态,如图1~6所示,操作者手持固定手柄12用于执行穿刺操作,所述触发臂25的外缘从外壳1的触发孔13凸出,弹簧27由于一端固定而处于压迫状态,当穿刺采血或输液完毕后,操作者双侧操作,同时按压所述两个触发臂25的凸出端,针体2的限制被解除,弹簧27恢复原状迫使针体2回缩;如图6所示为穿刺针触发后示意图,结合图3和图6,所述止复位臂26可以顺利通过固定锁点31,所述固定锁点31位于触发臂25和止复位臂26之间,此时,由于触发臂25和止复位臂26反方向的分叉结构,其均不能通过固定锁点31,如此就限制了针体2的向上、向下活动,达到一次性使用的目的,换言之,此时针头21完全没入所述外壳1中,防止了针头21刺伤医务人员等,大大提高了安全性。
优选地,所述外壳1和后盖3沿针体2方向的截面图呈圆形、椭圆形、长方形或者正方形。
进一步优选地,如图7所示,所述触发臂25、止复位臂26和固定锁点31还可以通过另一种结构组合达到触发后锁死针头21的目的,触发臂25结构不变,止复位臂26改为止复位环28,固定锁点31改为固定臂29,其中,止复位环28为沿针体2的凸起,固定臂29为呈向下分叉结构,所述固定臂29设置在后盖3内侧。
更进一步优选地,由图8所示,所述外壳1的触发孔外沿15还可以为其它结构,如触发孔13下端外凸15-1、上端外凸15-2或者上下外凸15-3。
本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本发明的其它实施方案。本申请旨在涵盖本发明的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本申请未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的,本发明的真正范围和精神由下面的权利要求指出。
应当理解的是,本发明并不局限于上面已经描述并在附图中示出的精确结构,并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。
Claims (7)
1.一种安全式穿刺针,其特征在于,所述穿刺针包括:外壳、针体、后盖三部分;所述针体一端设置针头,另一端连接软管;所述后盖通过螺纹/卡扣与所述外壳连接;所述针体由针头、针座、软管构成;所述针座为圆柱状腔体结构,所述针座沿针头到软管方向依次设置有弹簧止点、触发臂和止复位臂。
2.根据权利要求1所述的一种安全式穿刺针,其特征在于,所述触发臂为双侧树枝状结构,具有一定的韧性,并呈向下分叉结构;所述止复位臂为双侧树枝状结构,具有一定的韧性,并呈向上分叉结构。
3.根据权利要求1所述的一种安全式穿刺针,其特征在于,所述外壳上端设置有开孔,外壳下端外侧设置有螺纹/卡扣结构,所述开孔和螺纹/卡扣结构之间设置有固定手柄和触发孔。
4.根据权利要求3所述的一种安全式穿刺针,其特征在于,所述开孔直径介于弹簧和针座之间。
5.根据权利要求3所述的一种安全式穿刺针,其特征在于,所述触发孔周边设置有触发孔外沿,所述触发孔外沿为内凹结构,或
下端外凸、或上端外凸、或上下外凸。
6.根据权利要求1所述的一种安全式穿刺针,其特征在于,所述后盖内侧设置有螺纹/卡扣结构,所述后盖内侧还设置有固定锁点,所述固定锁点为向所述后盖内侧凸起的横档结构。
7.根据权利要求1所述的一种安全式穿刺针,其特征在于,所述外壳和后盖沿针体方向的截面图呈圆形、椭圆形、长方形或者正方形。
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