CN103721322A - Filtering syringe - Google Patents

Filtering syringe Download PDF

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Publication number
CN103721322A
CN103721322A CN201410036208.9A CN201410036208A CN103721322A CN 103721322 A CN103721322 A CN 103721322A CN 201410036208 A CN201410036208 A CN 201410036208A CN 103721322 A CN103721322 A CN 103721322A
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CN
China
Prior art keywords
needle
syringe
injection
liquid
check valve
Prior art date
Application number
CN201410036208.9A
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Chinese (zh)
Inventor
李君�
丁文学
夏欣瑞
于红春
赵素霞
苗延国
Original Assignee
山东威高集团医用高分子制品股份有限公司
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Application filed by 山东威高集团医用高分子制品股份有限公司 filed Critical 山东威高集团医用高分子制品股份有限公司
Priority to CN201410036208.9A priority Critical patent/CN103721322A/en
Publication of CN103721322A publication Critical patent/CN103721322A/en

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Abstract

The invention discloses a filtering syringe which comprises a syringe and a filtering needle, wherein the needle is composed of a needle tube and needle beds, the needle tube is arranged at the front end of an upper needle bed, the rear end of a lower needle bed is connected to a conical head of the syringe, the front end of the lower needle bed and the upper needle bed are combined so as to form an imbibing inlet and an injection outlet, the lower needle bed is provided with a check valve, the check valve is opened in the imbibing direction of the imbibing inlet and the injection direction of the injection outlet, and the injection outlet is provided with a filter. The syringe disclosed by the invention is simple in overall structure, easy to operate, safe and reliable, low in cost and disposable in use, and can effectively reduce the drug impurities and cross infection risks.

Description

一种过滤型注射器 A filter syringe

技术领域 FIELD

[0001] 本发明涉及注射器,具体地说是一种过滤型注射器。 [0001] The present invention relates to syringes, particularly a filter-type injector.

背景技术 Background technique

[0002] 众所周知,目前临床使用的针剂多封装在玻璃瓶中,用注射器的针头扎橡胶塞或用砂轮割破玻璃瓶抽取药液时,瓶塞料屑或玻璃粉末会进入注射液中。 [0002] is well known, currently in clinical use multiple injection encapsulated in a glass bottle, a syringe with a needle bar of a rubber stopper or cut with a grinding wheel while extracting liquid bottle, cork powder or glass frit chips will enter the injection. 传统的注射器不具有过滤功能,抽取液体药物时会将这些杂质抽到注射器内并直接注射给患者,从而诱发静脉炎症等疾病。 Conventional syringe having no filtering function, these impurities will draw liquid medication into the syringe and pumped patients injected directly, thereby inducing venous inflammation and other diseases. 中国发明专利申请CN102600535A,公开了一种带精密过滤器的注射针,包括针管和具有内通孔的针座,所述针座内通孔包括孔径较小的上部、孔径较大的下部和具有逐渐向上收束缩小孔径结构的中间部,所述针管一端置于所述内通孔的上部,所述针座的内通孔内设有一过滤器。 Chinese patent application CN102600535A, discloses an injection needle A tape precision filter, comprising a needle hub having a needle tube and the through-hole, said through hole comprises a needle holder within the aperture of the upper portion of the smaller, the larger pore size and having a lower portion the intermediate portion is gradually reduced upwardly converging pore structure, one end of said needle disposed within an upper portion of the through hole, the through hole of the hub is provided with a filter. 由于该注射针进液通道和出液通道是同一个通道,在过滤后需要再次更换注射针头,但过滤针头和注射针头更换过程中存在被细菌或病毒的污染的风险,同时临床操作也不方便。 Since the needle and the fluid inlet passage channels are the same channel, the needle needs to be replaced again after filtration, the filter replacement needles and injection needles or the risk of bacterial contamination during the presence of virus, while the operation is not convenient clinical .

发明内容 SUMMARY

[0003] 本发明的目的是提供一种结构简单、可有效实现过滤功能且注射时无需更换针头的一种过滤型注射器。 [0003] The object of the present invention is to provide a simple structure and is effective to achieve without changing the filtering function of the filter A needle injection syringe.

[0004] 本发明的技术方案是:一种过滤型注射器,包括注射器和过滤注射针,所述注射针由针管和针座组成,针管安装在上针座的前端,下针座的后端连接到注射器的锥头上,下针座的前端与上针座结合形成吸液入口和注射出口,下针座上安装有止回阀,止回阀在吸液入口的吸液方向及注射出口的注射方向打开,注射出口上安装有过滤器。 [0004] aspect of the present invention is: a filter syringe, comprising a syringe and a filter needle, the injection needle from the needle hub and needle tube composed of needle hub mounted on the distal end, a rear end connected to the hub the head of the syringe cone, the front end of the needle hub and the needle hub to form an injection liquid suction inlet and an outlet, the needle hub is mounted a check valve in the direction of the absorbent liquid absorbent inlet and outlet of the injection injection opening direction, is mounted on the injection outlet of the filter.

[0005] 作为一种优选结构,下针座上端的中间部分向上延伸形成圆柱型液体通道,该液体通道成为注射出口,注射出口周围为进液入口,止回阀为伞状结构,止回阀中心有一固定套套在圆柱型液体通道的外面,止回阀伞状顶部与圆柱型液体通道的顶端间形成间隙腔,伞状顶部有一开口,边缘向下延伸形成皮瓣结构。 [0005] As a preferred configuration, the upper end of the intermediate portion of the hub extends upwardly forming a cylindrical liquid passage, the injection liquid outlet passage becomes, around the injection into the liquid inlet to an outlet, the check valve structure is an umbrella check valve condom has a fixed outside the cylindrical liquid passage, the check valve between the top of the umbrella-shaped top and cylindrical liquid passage forming a gap chamber, the umbrella has a top opening, downwardly extending edge flap structures are formed.

[0006] 所述止回阀采用弹性较好的橡胶材料,优选硅胶材质。 [0006] The valve is preferably a rubber elastic material, preferably silicone material.

[0007] 所述圆柱型液体通道的下端与下针座通过连接座连接,连接座上有孔隙,形成进液入口。 The [0007] lower end of the cylindrical liquid passage and the hub are connected by the connecting base, the connection base has apertures, is formed into the liquid inlet.

[0008] 所述圆柱液体通道的底端处的下针座上设有一个环形凹槽,过滤膜焊接在环形凹槽内。 [0008] The bottom end of the needle hub is provided with a cylindrical liquid passage an annular groove, the filtration membrane is welded to the annular groove.

[0009] 本发明的有益效果是:过滤型注射器的过滤和注射过程自动进行,只在注射时过滤药液,抽药时不用过滤,不需要更换针头,避免了细菌和病毒污染的可能性。 [0009] Advantageous effects of the present invention are: filtration type filter and syringe injection process automatically, only when the injection liquid was filtered, unfiltered pumping drugs without replacing the needle, to avoid the possibility of bacterial and viral contamination. 本发明的自动过滤注射器具有整体结构简单,操作方便、安全可靠、成本低、一次性使用、有效避免交叉感染发生等优点。 Automatic injector according to the invention the filter has an overall simple structure, easy to operate, reliable, low-cost, disposable, effectively prevent cross-infection and the like.

附图说明[0010] 图1是本发明过滤型注射器的结构示意图。 BRIEF DESCRIPTION [0010] FIG. 1 is a schematic view of the present invention is a syringe-type filter.

[0011] 图2是本发明过滤型注射器的针座的分解结构示意图。 [0011] FIG. 2 is an exploded schematic view of the structure of the hub of the syringe-type filter of the present invention.

[0012] 图3是本发明抽取药液时针座中液体流向示意图。 [0012] FIG. 3 is a liquid extract of the present invention, the liquid flow schematic hour seat.

[0013] 图4是本发明注射药液时针座中液体流向示意图。 [0013] FIG. 4 is a liquid injection clockwise liquid to the seat of the present invention in a schematic view.

[0014] 图中I注射器,2锥头,3注射针,4针管,5针座,6上针座,7下针座,8吸液入口,9注射出口,10止回阀,IOa固定套,IOb伞状顶部,IOc皮瓣结构,IOd开口,11圆柱型液体通道,12间隙腔,13连接座,14孔隙,15环形凹槽,16过滤膜。 [0014] FIG I syringe cone 2, the injection needle 3, 4 needle tube, the needle hub 5, the needle hub 6, the needle hub 7, the liquid suction inlet 8, an outlet 9 for injection, the check valve 10, the fixed sleeve IOa of , IOb of the top of the umbrella, IOc of flap structure, IOd opening, a cylindrical liquid passage 11, the gap space 12, connecting base 13, aperture 14, annular groove 15, the filtration membrane 16.

具体实施方式 Detailed ways

[0015] 下面结合附图对本发明作进一步描述。 [0015] The following drawings in conjunction with the present invention will be further described.

[0016] 从图1-图4中可以看出,一种自动过滤注射器,包括注射器I和注射针3,所述注射针3由针管4和针座5组成,针管4安装在上针座6的前端,下针座7的后端连接到注射器I的锥头2上,下针座7的前端与上针座6结合形成吸液入口8和注射出口9,下针座7上安装有止回阀10,止回阀10在吸液入口的吸液方向及注射出口的注射方向打开,注射出口9上安装有过滤器。 [0016] As can be seen in Figures 1-4, an automatic filter syringe includes a syringe and needle I 3, the injection needle 3 by a needle and needle hub 5 composed of 4, the needle 4 is mounted on the needle hub 6 a front end, a rear end of the needle hub 7 is connected to the injector I of the cone 2, the distal end of the needle hub 7 and the needle hub 6 is formed on the binding liquid suction port 8 and the injection port 9 is mounted on the stopper 7 at the needle hub check valve 10, check valve 10 opens in the direction of injection and the injection direction of the liquid-absorbent liquid-absorbent inlet port, a filter is mounted on the injection outlet 9.

[0017] 如图2、图3及图4所示,下针座7上端的中间部分向上延伸形成圆柱型液体通道11,该液体通道成为注射出口9,注射出口9周围为进液入口8,止回阀10为伞状结构,止回阀10中心有一固定套IOa套在圆柱型液体通道11的外面,止回阀伞状顶部IOb与圆柱型液体通道11的顶端间形成间隙腔12,伞状顶部IOb有一开口10d,间隙腔12有利于伞状顶部IOb产生变形,在抽取药液时封堵开口10d,推注药液时撑开开口10d,边缘向下延伸形成皮瓣结构10c,皮瓣结构IOc类似于裙子在的下摆,其内部为固定套IOa提供了足够的空间,使得固定套IOa与圆柱型液体通道11的外表面贴合面积大,二者贴合紧密,避免注射器中的药液从贴合面通过。 [0017] As shown in FIG. 2, 3 and 4, the intermediate portion 7 extends upwardly at the upper end of the cylindrical hub 11 formed liquid passage, the injection liquid outlet passage becomes 9, around the injection into the liquid inlet port 9 to 8, the check valve 10 is umbrella structure, the check valve 10 has a fixing sleeve IOa cylindrical sleeve on the outside of the liquid passage 11, the check valve at the top of the cylindrical umbrella IOb liquid chamber 12 to the top passage gap 11 is formed, an umbrella IOb-shaped top with an opening 10d, the gap space 12 facilitate the top of the umbrella IOb deformation, blocking the opening 10d when the extraction liquid, the expansion injection liquid when opening 10d, extending downwardly formed edge flap structure 1OC, skin subvalvular IOc similar skirt hem, which provides sufficient internal space for holding jacket IOa, such that the sleeve is fixed to the outer surface of the cylindrical IOa liquid passage 11 of the bonded area, both close fit, avoiding the syringe from the surface by chemical bonding. 皮瓣结构IOc可以向固定套IOa方向内收,引导吸入的药液顺畅流入注射器。 IOc flap configuration can be collected into the fixed sleeve IOa direction, guiding the liquid smoothly sucked into the syringe. 在推注药液时,皮瓣结构IOc可以外张,与上针座6内腔壁过盈配合,封堵吸液入口,确保液体经注射出口流出。 When injection liquid, may be flared IOc flap structure, the needle hub 6 and the inner cavity wall interference fit, a liquid-absorbent inlet plugging, ensure that the liquid flows through the injection outlets.

[0018] 止回阀10采用弹性较好的橡胶材料,优选硅胶材质。 [0018] The check valve 10 is preferably a rubber elastic material, preferably silicone material. 硅胶材质弹性大、变形性好,可以满足打开通道和封闭通道的需求。 Silicone material elasticity, deformability good to meet the needs of the channel open and closed channels.

[0019] 圆柱液体通道11的底端处的下针座7上设有一个环形凹槽15,过滤膜16焊接在环形凹槽15内。 [0019] a cylindrical liquid passage 11 at the bottom end of the needle hub 15 is provided with an annular groove 7, the filter membrane 16 is welded to the annular groove 15. 圆柱型液体通道11的下端与下针座通过连接座13连接,连接座上有孔隙14,形成进液入口,连接座13可以如图中所示为十字型的结构,也可以是其他便于连接的结构。 Cylindrical liquid passage 11 is connected to the lower end of the hub by a connecting base 13, connecting base 14 has apertures forming an inlet into the liquid, the connecting base 13 may be as shown in the cross-shaped structure, the other may be connected to facilitate Structure.

[0020]如图3所示,止回阀10在抽取药液时,在负压和液体压力作用下,伞边即皮瓣结构IOc会收缩形成液体通道,同时伞状顶部IOb的开口IOd因挤压会封闭,液体经过伞的边缘经连接座上的孔隙14,进入注射器I内;如图4所示,止回阀10在注射药液时,在液体压力作用下,伞边即皮瓣结构IOc会张开封死液体通道,伞状顶部IOb的开口IOd在压力作用下会张开形成液体通道,液体会经过过滤膜16由圆柱液体通道11,经过开口IOd进入上针座液体通道内,然后通过针管4进入人体。 [0020] As shown in FIG. 3, the check valve 10 when the liquid extraction, and the negative pressure in the liquid pressure, i.e. umbrella side flap structure IOc shrinks to form a liquid passage, while the opening of the top of the umbrella IOb due IOd extrusion may be closed, the liquid past the edge of the umbrella through the connection apertures 14 of the base, into the syringe I; As shown, the check valve 10 during the injection liquid, the liquid under pressure, i.e. umbrella side flaps 4 IOc sealed structure will open the liquid passage, opening the top of the umbrella IOd IOb under pressure to form a liquid passage will be opened, the liquid will pass through the filter membrane 1611, enters through the openings by a cylindrical liquid passage IOd the liquid passage on the hub, then enter the body through the needle 4.

Claims (6)

1.一种过滤型注射器,包括注射器和过滤注射针,所述注射针由针管和针座组成,针管安装在上针座的前端,下针座的后端连接到注射器的锥头上,其特征在于:下针座的前端与上针座结合形成吸液入口和注射出口,下针座上安装有止回阀,止回阀在吸液入口的吸液方向及注射出口的注射方向打开,注射出口上安装有过滤器。 1. A filter-type syringe comprising a syringe and a filter needle, the injection needle from the needle hub and needle tube composed of needle cannula mounted at a front end, a rear end of the needle hub on a syringe connected to the hub cone head, which characterized in that: the distal end of the needle hub and needle hub are formed binding the absorbent inlet and outlet of the injection, the needle hub is mounted a check valve opening in the absorbent liquid absorbent inlet direction and the injection direction of the injection port, a filter mounted on the injection outlet.
2.根据权利要求1所述的过滤型注射器,其特征在于:下针座上端的中间部分向上延伸形成圆柱型液体通道,该液体通道成为注射出口,注射出口周围为进液入口,止回阀为伞状结构,止回阀中心有一固定套套在圆柱型液体通道的外面,止回阀伞状顶部与圆柱型液体通道的顶端间形成间隙腔,伞状顶部有一开口,边缘向下延伸形成皮瓣结构。 2. A syringe-type filter according to claim 1, characterized in that: the upper end of the intermediate portion of the hub extends upwardly forming a cylindrical liquid passage, the injection liquid outlet passage becomes, around the injection into the liquid outlet of the inlet check valve as umbrella structure, the check valve has a cylindrical fixed condom outside the liquid passage, the check valve between the top and the top of the umbrella-shaped liquid passage forming cylindrical gap space, the top of the umbrella with an opening, an edge extending downwardly skin valve structure.
3.根据权利要求1或2所述的过滤型注射器,其特征在于:所述止回阀采用有弹性的橡胶材料制成。 3. The syringe-type filter according to claim 1 or claim 2, characterized in that: the check valve using a rubber elastic material.
4.根据权利要求3所述的过滤注射器,其特征在于:所述止回阀采用硅胶材质制成。 Syringe filter according to claim 3, wherein: the check valve is made of silicone material.
5.根据权利要求2所述的过滤注射器,其特征在于:所述圆柱型液体通道的下端与下针座通过连接座连接,连接座上有孔隙,形成进液入口。 Syringe filter according to claim 2, wherein: said cylindrical liquid passage at the lower end of the needle hub are connected by the connecting base, the connection base has apertures, is formed into the liquid inlet.
6.根据权利要求2所述的过滤注射器,其特征在于:所述圆柱液体通道的底端处的下针座上设有一个环形凹槽,过滤膜焊接在环形凹槽内。 6. The filter syringe according to claim 2, wherein: the needle hub at the bottom end of the cylindrical liquid passage is provided with an annular groove, an annular groove in the filter membrane welding.
CN201410036208.9A 2014-01-26 2014-01-26 Filtering syringe CN103721322A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105708693A (en) * 2016-03-30 2016-06-29 王高松 Filter needle for injector
CN106038287A (en) * 2015-04-17 2016-10-26 高钟元 Disposable syringe having safety filter function

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938513A (en) * 1974-01-03 1976-02-17 Hargest Thomas S Syringe filter and valve combination
US4332249A (en) * 1980-08-01 1982-06-01 Sherwood Medical Industries, Inc. Filter and valve assembly for hypodermic syringe
CN103492009A (en) * 2011-04-08 2014-01-01 佳迈特股份有限公司 Filter needle
CN203694267U (en) * 2014-01-26 2014-07-09 山东威高集团医用高分子制品股份有限公司 Filtration injector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938513A (en) * 1974-01-03 1976-02-17 Hargest Thomas S Syringe filter and valve combination
US4332249A (en) * 1980-08-01 1982-06-01 Sherwood Medical Industries, Inc. Filter and valve assembly for hypodermic syringe
CN103492009A (en) * 2011-04-08 2014-01-01 佳迈特股份有限公司 Filter needle
CN203694267U (en) * 2014-01-26 2014-07-09 山东威高集团医用高分子制品股份有限公司 Filtration injector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106038287A (en) * 2015-04-17 2016-10-26 高钟元 Disposable syringe having safety filter function
CN106038287B (en) * 2015-04-17 2018-10-19 高钟元 Disposable syringes with safety filter function
CN105708693A (en) * 2016-03-30 2016-06-29 王高松 Filter needle for injector

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