CN100536950C - Disposable safety injecting device - Google Patents

Disposable safety injecting device Download PDF

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Publication number
CN100536950C
CN100536950C CN 200610109823 CN200610109823A CN100536950C CN 100536950 C CN100536950 C CN 100536950C CN 200610109823 CN200610109823 CN 200610109823 CN 200610109823 A CN200610109823 A CN 200610109823A CN 100536950 C CN100536950 C CN 100536950C
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portion
tear
ring
injection device
disposable
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CN 200610109823
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Chinese (zh)
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CN101125230A (en )
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陈昌慈
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陈昌慈
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Abstract

本发明一种一次性安全注射装置,由一液筒,一针头,一推杆,及一套环所组成,其中,该针头结合于液筒前端的插榫,该插榫内部设有一扣接部,其与液筒前端顶壁交接处及顶壁与外侧筒环交接处分别设有同心的一C形撕裂沟及一环形撕裂沟;该推杆的杆身前端轴向延伸一具有一卡扣部的杆柱,其穿越并固定该套环,以便可滑移地容置于液筒内;以便将推杆前推,使套环抵住顶壁,而卡扣部则卡扣于插榫内的扣接部,然后将推杆继续前推,使该C形撕裂沟因受力而撕裂,同时对未设沟槽部位形成一力矩,从而令对应该部位的环形撕裂沟的较薄部位因而断裂,并沿着周缘蔓延呈大部断裂状态,此时,将推杆回拉,使该环形撕裂沟受力后完全与液筒分离。 A disposable injection device of the present invention is safe from a liquid cartridge, a needle, a plunger, and a ring, where the insertion needle is bonded to the distal end of the liquid cylinder tenon, the tenon is provided with an internal plug fastening unit, which was the front end of the cylinder top wall and the top wall and the junction of the outer tube are respectively provided with concentric ring junction of a C-shaped groove and an annular tear tear groove; front shaft extending axially of the push rod having a a locking portion of the pole, and which is fixed through the collar so as to be slidably received in the liquid cylinder; prior to the push rod, the collar against the top wall, and the locking of the locking portion the insertion portion in the fastening tongue, and then continue to the front to push the push rod, so that the C-shaped groove tear strength and tear due to, simultaneously forming a torque on the grooved area is not provided, so that the annular portion to be torn thus the thinner portion of the fracture fissure and break most of the state was spread along the circumference, this time, pulling back the plunger, so that the annular groove is completely separated from the tear fluid force after the cartridge.

Description

一次性安全注射装置 Disposable injection device safety

技术领域 FIELD

本发明是一种注射装置,尤指一种一次性安全注射装置。 The present invention is an injection device, particularly to a safety disposable injection device. 背景技术 Background technique

注射装置,例如注射针筒在医疗器材中占有极大比重,尤其近年来一些难以治疗的疾病,例如艾滋病或各类型肝炎的蔓延,以致受注射感染的案例不断发生。 Injection devices, such as syringes in medical equipment in the possession of great proportion, especially in recent years, difficult to treat some diseases, such as AIDS or the spread of various types of hepatitis, so that cases of infection by injection continue to occur. 因此,也引起各界对医疗器材的重视,尤以注射针筒为甚, 所以,具自毁功能的一次性的注射针筒乃成为必然且无法避免的趋势。 Therefore, also aroused attention of medical equipment, especially in the syringe is staggering, so, with self-destruction of disposable syringes is the inevitable trend and become unavoidable.

现有的安全注射针筒,大抵而言,是由针头、液筒及推杆结合而成。 Conventional safety syringe, probably, it is a combination of the needle, the liquid from the barrel and plunger.

例如中国台湾于2003年7月1日公告的公告号为540385号的「二件式回縮安全针筒」专利案即为一例,其具有可供推杆置入的筒体(液筒)一端设有针座,该针座在周边与筒体间形成有撕裂沟槽,针座上设有一具穿孔的中座,推杆在相对于中座一端设有可穿置卡扣在穿孔的扣块而构成一种安全针筒。 Such as China Taiwan on July 1, 2003 announcement Announcement No. 540 385 Number of "two-piece retracting safety syringe" patent case is an example, which has for putting into the cylinder (hydraulic cylinder) end with the needle hub, the hub is formed between the periphery of the cylindrical tear groove, the hub is provided with a perforated seat in the push rod provided at one end with respect to the seat may be placed through the perforation in a snap buckle blocks constitute a safety syringe. 以便可通过推杆端头与针座卡固后,当推杆拉回针座同时破坏撕裂沟槽,使固定有注射针的针座移至筒体内部,以防止注射针外露的意外伤害发生。 So that by the end of the plunger head and retaining the needle hub, the needle hub when the plunger is pulled back at the same time destroy the tear groove, so that the injection needle is fixed to the interior of the cylinder to move the needle hub, the needle to prevent accidental injury to exposed occur.

而该案显著的缺失在于,若撕裂沟槽厚度较厚,例如O. 12mm,于射出成型过程中,该熔融塑料液可顺利通过该间隙,通过以形成具穿孔的中座, 唯其因沟槽厚度较厚而难以通过由外力破坏,而失去一次性的目的。 Significantly deletions that case, if the tear trench thicker, e.g. O. 12mm, in the injection molding process, the molten plastic liquid smoothly through the gap, formed by perforations in the seat, because only in this trench thicker and difficult to damage by external force, lost disposable object. 若撕 If the tear

裂沟槽厚度较薄,例如0.06mm,其虽容易通过由外力破坏撕裂沟槽,但熔融塑料液将难以通过如此薄之间隙,以致具穿孔的中座难以一体射出成型。 Split groove thinner, e.g. 0.06mm, although it is easy to tear by the external damage trench, but would be difficult to melt plastic fluid through the gap is so thin, that the perforations are integrally injection molded seat difficult. 再者,因该液筒顶面撕裂沟槽的弱面设计,可能导致该针座于注射或运输过程中,经由外力所产生的力矩,而造成摇晃情况发生,甚至因撕裂沟槽的破裂将导致漏液的情况发生。 Also, as the top surface of the liquid cylinder weak tear groove surface design, may cause the hub to the injection or during transportation, the external force via the torque generated, causing shaking occurs even due to tearing of the trench rupture will lead to leakage occurs.

有鉴于此,本发明申请人本着多年来从事安全注射装置设计及产销的经验,期能克服前述安全注射针筒的诸多缺失,经再三实验与测试,进而发展出本发明的「一次性安全注射装置」。 In view of this, the present applicant in line with many years of experience in the design and marketing of safe injection devices, the period preceding overcome many of the missing safety syringe, after repeated experiments and tests, the development of a "one-time security present invention injection device. "

发明内容 SUMMARY

本发明主要目的在于提供一种一次性安全注射装置,其是由一液筒, 一针头, 一推杆,及一套环所组成,其中,该针头结合于液筒前端的插榫, 该插榫内部设有一扣接部,其与液筒前端顶壁交接处及顶壁与外侧筒环交接处分别设有同心的一C形撕裂沟及一环形撕裂沟;该推杆的杆身前端轴向延伸一具有一卡扣部的杆柱,其穿越并固定该套环,以便可滑移地容置于液筒内;通过将推杆前推,使套环抵住顶壁,而卡扣部则卡扣于插榫内的扣接部,然后将推杆继续前推,使该C形撕裂沟因受力而撕裂,同时对未设沟槽部位形成一力矩,从而令对应该部位的环形撕裂沟的较薄部位因而断裂,并沿着周缘蔓延呈大部断裂状态,此时,将推杆回拉,使该环形撕裂沟受力后完全与液筒分离者。 The main object of the present invention to provide a disposable safety injection device, which is composed of a liquid cartridge, a needle, a plunger, and a ring, where the insertion needle is bonded to the distal end of the liquid cylinder tenon, the insertion internal fastening portion is provided with a tongue, which was the front end of the cylinder top wall and the top wall and the junction of the outer tube are respectively provided with concentric ring junction of a C-shaped groove and an annular tear tear groove; the plunger shaft a distal end having an axially extending pole portion of a snap, and which is fixed through the collar so as to be slidably received in the liquid cylinder; by the front push rod, the collar against the top wall, and the insertion portion of the snap-locking fastening of the tongue portion, and then continue to the front to push the push rod, so that the C-shaped groove tear strength and tear due to, simultaneously forming a torque on the grooved area is not provided, so that the It should be torn portion of the annular groove of the thin portion thus broken, and most of the broken state was spread along the circumference, this time, pulling back the plunger, so that the annular groove tear force after the liquid cartridge is completely separated from their .

本发明次要目的在于提供一种一次性安全注射装置,其另包括一定位环,其套接于插榫与筒环之间,并触及液筒顶壁。 Secondary object of the present invention to provide a disposable safety injection device further includes a positioning ring interposed between the socket and the cylindrical ring tongue, the top wall and reach the liquid cartridge. 或者,该针头的针座后段突设一座环,其套接于插榫与筒环之间,且后方具有一斜削端,其触及液筒顶壁。 Alternatively, the rear section of the needle hub provided a protruding ring tenon interposed between the socket and the tubular ring and having a beveled rear end thereof touches a top cylindrical liquid wall.

本发明又一目的在于提供一种一次性安全注射装置安全注射装置,其中该扣接部为一卡环,而卡扣部则为一斜向外张的矢形扣榫,而该扣榫可卡扣于该卡环。 A further object of the present invention to provide a disposable injection device secure safety of the injection device, wherein the fastening portion is a snap ring, the snap buckle tongue portion was a sagittal oblique outwardly sheets, which can buckle tongue card buckle on the collar.

本发明再一目的在于提供一种一次性安全注射装置安全注射装置,其中该液筒后端幵口设有一止挡部,其为向内突起的接环,而推杆的杆头部则是由前、后翼片所构成,该两翼片可卡扣于接环而定位。 A further object of the present invention is to provide a disposable injection means secure safety injection, wherein the fluid cylinder is provided with a rear opening Jian stopper portion, which contact inwardly projecting ring, the putter club head is the front and rear flap constituted, the wings can be locked to the mount plate is positioned. 本发明另一目的在于提供一种一次性安全注射装置安全注射装置,其中该杆柱径向突设一滑动部,其是由两周缘具斜削面的前、后环片所构成, 以便共同包夹套环后方环孔,当套环抵住液筒的顶壁时,该两环片进入环室内,并可在其内滑动,使杆柱得以继续前移。 Another object of the present invention to provide a disposable injection secure safety injection means, wherein said pin slides a radially protruding portion, which is two weeks before having edge bevel surface, the formed sheet ring, for common packet rear jacket ring ring hole when the liquid against the cylindrical collar of the top wall, the two pieces ring into the ring chamber, within which can slide the rod string to continue forward.

本发明又一目的在于提供一种一次性安全注射装置安全注射装置,其中该推杆在杆柱后方的杆身前段依序设有一杆头部及一第一折断部,该杆头部卡掣于液筒后端开口的止挡部,而令针头、推杆前段及套环收纳于液筒内,随即于第一折断部将推杆折断。 A further object of the present invention to provide a disposable injection secure safety injection means, wherein the push rod is provided with a sequentially first head and a breaking portion in the rear of the anterior pole of the shaft, the club head engaging the rear end portion to the cylindrical stopper was opened, so that the needle and the push rod is housed in the pre-stage and the liquid tube collar, then the plunger to the first breaking portion to break. 再者,该第一折断部后方依序设有一筒塞部及一第二折断部,该筒塞部嵌置于液筒前端开口,并于第二折断部将推杆折断。 Further, the rear portion of the first sequence is provided with a breaking portion and a second cylindrical plug breaking portion, the cylindrical portion fitted plug was placed in the barrel front end opening, and a second breaking portion to break the plunger.

本发明再一目的在于提供一种一次性安全注射装置安全注射装置,其中该扣接部与C形撕裂沟的顶壁内面突设一顶掣点,以便当推杆前推,使卡扣部卡扣于插榫内的扣接部,且杆柱顶掣于该顶掣点,使该c形撕裂沟因受力而逐渐撕裂,同时对未设沟槽部位形成一力矩,从而令对应该部位 A further object of the present invention is to provide a disposable injection secure safety injection means, wherein the inner surface of the top wall of the buckle portion of the C-shaped groove tear a detent projecting point, so as to push the plunger before the snap snap-fastening the insertion portion in the tongue portion, and a column top latch lever to latch the top point, such that the c-shaped groove tear progressively tear due to force, while the groove portion is not formed is provided a moment, so that It should be made on site

的环形撕裂沟较薄部位因而断裂。 Thin annular groove portion and thus breaking the tear. 其中该顶掣点位于该扣接部与c形撕裂 Wherein the top point is located in the detent engaging portion and the tear c

沟中央位置。 Central location ditch. 且该顶掣点为凸点或凸肋。 The top point and detent bumps or ribs.

所以,经由本发明的实施,其确实可使针头不致于施打回收后再前推, 而有效地防止注射装置的再利用所产生的困扰。 Therefore, via the embodiment of the present invention, it does allow the needle-administration as not pushed forward after recovery, effectively preventing reuse of the injection device of the problems arising. 而定位环或针头后段座环的斜削端设计,其套接于插榫与筒环之间,其可避免因具有撕裂沟的弱面设计所可能导致插榫摇晃的情况,并进一步具有止漏的效果。 And the beveled end of the retaining ring design or needle seat ring segment, which is interposed between the tongue and the socket in the cylindrical ring, which may have a weak to avoid tearing groove surface design may lead to the insertion of the tenon shaken, and further It has stanch effect. 再者,当施打及注射后,可将该液筒两端开口分别为杆头部及筒塞部所封闭,而令使用后的针头绝无露出液筒的可能,从而增加使用后的安全性。 Further, when the injection-administration and may be the fluid cylinder open at both ends, respectively, and a rod head portion of the bung is closed, and no needle is exposed after use so that the cartridge may be liquid, thereby increasing the safety after use sex. 尤有进者, Further, it has,

本发明的同心内c形撕裂沟及环形撕裂沟的设计,可通过由对推杆先前推 The c-shaped concentric grooves of the present invention and the ring tearing the tear groove designed by the previous pushing of the push rod

而后拉回所施加的外力,而令顶壁连同插榫、针头完全地与液筒分离,而形成自毁功能,诚为同类物品前所未见的一大佳构。 Then back force applied, so that the top wall together with the plug tongue, the needle is completely separated from the liquid cylinder to form a self-destruct feature, the same-for a large article unprecedented good structure.

附图说明为进一步揭示本发明的技术内容,首先请参阅图式,其中: 图1为本发明注射装置的立体分解图; 图2为本发明组立后的立体图; BRIEF DESCRIPTION In order to further illustrate the technical details of the present invention, first see the drawings, wherein: Figure 1 is an exploded perspective view of an injection device according to the invention; FIG. 2 is a perspective view of the invention is set upright;

图3a及图3b为本发明药筒的顶视图及前视剖面图; Figures 3a and 3b present a top view and a cross-sectional front view of the cartridge of FIG invention;

图4为本发明液筒汲取药液的剖面图; FIG dip tube 4 was cross-sectional view of the drug solution of the present invention;

图5为本发明正在注射的剖面图; Injection is a sectional view of FIG. 5 of the present invention;

图6为本发明注射至尽头的剖面图; FIG 6 is a sectional view showing the injection to the end of the present invention;

图7为本发明的杆突卡扣于卡环的局部放大剖面图; FIG projecting snap lever 7 of the present invention in a partial enlarged sectional view of the collar;

图8a及图8b为本发明液筒的撕裂沟于断裂过程的局部放大剖面图; FIG. 8a and FIG. 8b liquid cartridge of the present invention to tear groove partially broken enlarged sectional view of the process;

图9为本发明推杆回拉时的示意图; FIG 9 is a schematic pulled back when the push rod of the present invention;

图IO为本发明推杆于液筒后端开口折断的示意图; FIG IO of the present invention in a schematic view of the plunger barrel rear end of the opening was broken;

图11为本发明推杆的杆塞嵌套于液筒前端开口的示意图; 图12为本发明安全注射装置另一实施例立体分解图; Nested fluid cylinder plug schematic front end opening in the plunger rod 11 of the present invention; Figure 12 illustrates an exploded perspective view of the safety injection device according to another embodiment of the present invention;

图13为图12本发明组立后的剖面图。 13 is a cross-sectional view of the invention of FIG. 12 set upright.

具体实施方式 detailed description

如图1至图4所示,基本上,本发明的一次性注射装置是由一液筒l, 一针头2, 一推杆3,及一套环4所组成。 As shown in FIG. 1 to FIG. 4, substantially, disposable injection devices according to the present invention is formed by a cylindrical liquid L, a needle 2, a pusher 3, a collar 4 and formed.

其中,液筒l为中空状,其内部具一筒室11供容置药液,而其后方则设有一对翼片12,以便供使用者握持之用。 Wherein l is a hollow cylinder liquid which has a cylindrical interior chamber 11 for receiving liquid, and behind it is provided with a pair of tabs 12, held by a user to use. 而液筒1前端顶壁13具一外径较小且中央具一通孔141的插榫14。 A top wall and a front end of the liquid cylinder 13 is small and an outer diameter with a central through hole 141 of the tongue 14 is inserted. 如图3a及图3b所示,该插榫14与顶壁13及顶壁13与外侧筒环15之间分别则设有具厚薄变化,例如0. 12mm与0. 6腿的一C形撕裂沟16及一环形撕裂沟17。 As shown in FIG. 3a and 3b, the insertion tongue 14 and the top wall 13 and top wall 13 and the outer cylindrical ring are respectively provided with a thickness between 15 changes, for example, 0.6 to 0. 12mm legs a C-shaped tear a fissure 16 and annular groove 17 tear. 此外,该插榫14 内壁向内突设一扣接部142,其与C形撕裂沟16的顶壁13内面,例如C 形撕裂沟16中央位置突设一顶掣点131。 In addition, the inner wall of the insertion tongue 14 projecting inwardly is provided a fastening portion 142, the inner face of the top wall 13 with a C-shaped groove 16 tear, such as 16 C tear groove center position of a protruding detent 131 points. 其中,该顶掣点131设置的目的为施力集中之用,因此,实施时可为凸点或凸肋,以利该C形撕裂沟16 的撕裂。 Wherein the top catch point object 131 is set by the urging concentration, therefore, the practice may be bumps or ribs, in order to facilitate the tear tear C-shaped groove 16. 此外,该筒室11近后端开口向内突设一止挡部18,例如接环,其与推杆3的杆头部33的两周缘具斜削面的前、后杆翼331、 332的卡扣,以利推杆3的定位及杆颈37的折断。 In addition, near the rear end of the cylindrical chamber 11 opening inwardly projecting portion 18 is provided a stop, e.g. mounting for two weeks with the head of the pusher rod 3 with the front edge 33 of the tapered surface, the wing bar 331, 332 snap, to facilitate positioning of the push rod and break the hosel 37 3.

特别是,另将一定位环5套接于插榫14与筒环15之间,其得为硬质或软质材料所制成,但以软质弹性材料,例如橡胶材料为佳。 In particular, a positioning of the other ring 5 is inserted in the socket between the tenon 14 and 15, which have a hard or soft material into a tubular ring, but soft elastic material such as rubber material is preferred. 此外,该定位环5触及顶壁13,可避免因两撕裂沟16、 17的弱面设计所可能导致该插榫14摇晃的情况发生,同时若两撕裂沟16、 17不慎破裂,该定位环5 还进一步肩负止漏的效果。 In addition, the positioning ring 5 touches the top wall 13, two can avoid tearing groove 16, 17 the weak surface design may lead to shaking of the insertion tenon 14 occurs, while if the two tear groove 16, 17 accidentally break, the positioning ring 5 further stanch shoulder effect.

所以,该定位环5设置目的在于:(1)防止插榫14受到外力所产生的力矩而造成两撕裂沟16、 17的意外破裂;以及(2)防止两撕裂沟16、 17 意外破裂后药剂的泄漏,即便因意外造成轻微泄漏,使本发明仍不丧失注射的功能。 Therefore, the object of the positioning ring 5 is provided: (1) preventing the insertion tongue 14 by an external force generated by the torque caused by two tear groove 16, 17 accidental rupture; and (2) prevent 16, two tear groove 17 accidentally break after the leak of the drug, even if by accident causing slight leak, the present invention is still not lost the function of injection.

针头2为现有技术,其具有一注射针21连结于针座22,该针座22 中央具有一座孔23,并可连通于注射针21的针孔,该座孔23内径对应于前述插榫14外径,以便可紧密套合。 2 is a prior art needle having an injection needle 21 is connected to the hub 22, the needle hub 22 having a central hole 23, and communicates with the pinholes 21 of the needle, the inner diameter of the bore 23 corresponding to the insertion tenon 14 outer diameter so as to be closely fittable.

推杆3为长条状杆体,末端具一外径较大的推片31,而杆身32是由若干放射状片体所构成,前端则具一杆头部33,其前方轴向延伸一杆柱34,该杆柱34径向突设一滑动部35。 3 is an elongated plunger shaft, the tip having a larger outer diameter of the push plate 31, and the shaft 32 is constituted by a plurality of radial plate member, the distal end having a head portion 33 which extends axially forward a column 34, said pin 34 projecting radially disposed a sliding portion 35. 而杆柱34最前端则为一卡扣部36, 例如斜向外张的矢形扣榫。 The foremost end of the pole 34 compared to a locking portion 36, e.g. sagittal buckle tongue outwardly inclined sheets.

其中,该杆头部33是由两周缘具斜削面的前、后翼片331、 332所构成,以利推杆3卡掣于止挡部18,以利该杆头部33后方外径呈縮入状的第一折断部37,例如杆颈的折断。 Wherein the club head 33 is a front bevel surface by the edge having two weeks after the flaps 331, 332 configured to facilitate push rod 3 engaging the stopper portion 18 of the rod to facilitate the outer diameter of the rear head portion 33 form 37, for example, broken hosel first breaking portion indented shape. 而滑动部35是由两周缘具斜削面的前、 后环片351、 352所构成,以便共同包夹套环4后壁的环孔42。 35 is a front slide portion having a bevel surface of the edge of two weeks, after ring segment 351, 352 configured to sandwich 42 together eyelet collar rear wall 4.

而本发明于该第一折断部37后方设有依序设有一筒塞部38及一亦呈縮入状的第二折断部39,例如塞颈。 The present invention is in the breaking of the first portion 37 is provided sequentially with a rear portion 38 and a cylindrical plug indented shape 39 was also found, for example, the second breaking plug neck portion.

套环4为软质材料制成,唯不限于橡胶材料,其外径尺寸对应于筒室11,以便可紧密塞合,而其内部的环室41后方开具一环孔42,供与前述的两环翼351、 352套接,且前端则具一尺寸较小的轴孔43,以便供卡扣部36的穿出。 The collar 4 is made of a soft material, a rubber material is not limited to CD, which corresponds to the outer diameter dimension of the cylinder chamber 11, so that the plug can be tightly fit, while the interior of the rear 41 issued a ring donut hole 42, for the aforementioned two EcoVane 351, socket 352, and the distal end having a size smaller axial bore 43, so that locking portion 36 for piercing. 其中,该环室41具有相当的纵深,以便滑动部35的两环片351、 352可在其内滑动。 Wherein the ring chamber 41 has a depth corresponding to the slide portion 35 of two ring pieces 351, 352 can slide therein.

请再参阅图式,本发明于组立时先将套环4套合于杆柱34,使卡扣部36由轴孔43穿出,且两环翼351、 352套接于环孔42,而后将推杆3连同套环4嵌套入液筒1的筒室11内,且针头2通过针座22嵌套于插榫14, 即呈现如图2及图4所示的立体图及剖面图,并可为汲取药液状态。 Referring again to the drawings, the present invention is the group immediately first collar 4 is fit into the pole 34, so that locking portion 36 of the shaft hole 43 piercing, and the two wings ring 351, the ring 352 is sleeved aperture 42, and then 3 together with the push rod collar 4 is nested inside the liquid chamber 11 of the cylinder barrel, and the needle hub 2 by the insertion tenon 22 nested 14, i.e. presenting a perspective view and a cross-sectional view as shown in FIG. 2 and shown in FIG. 4, and to draw the liquid state.

如图5所示,汲取药液后,并施打或注射时,是以手指前推推杆3, 使其前端套环4沿着筒室11前移,并挤压药液,使其通过插榫14及针头2,而注射于体内。 5, after the drawn liquid, and when administered to play or injection, the plunger 3 is pushed before the finger, so that the front end of collar 4 advance along the cylindrical chamber 11, and pressed liquid, passed through insertion tongue 14 and the needle 2, and injected into the body.

如图6所示,当套环4连同推杆3推顶至液筒1前端顶壁13,使药液为的挤出,并使卡扣部36伸入通孔13内,使药液残余降至最低。 6, when the collar 4, together with the push rod 3 to push the front end of a fluid cylinder top wall 13, so that liquid is extruded, and the locking portion extending into the through hole 1336, so that the liquid residue to a minimum.

当注射完妥后,如图7所示,将该推杆3前推,使卡扣部36卡扣于插榫14内的扣接部142,而滑动部35的前、后环翼351、 352因套环4 抵住顶壁13,而继续前进,并分别进入环室41内。 After completion of the injection properly, as shown in FIG. 7, the push rod 3 pushed forward, so that the snap engaging portion 36 is inserted in the inner portion of the fastening tongue 14 142, while the front portion 35 of the slide, the ring-wing 351, 4 against the collar 352 by a top wall 13, and move, respectively, and into the annulus 41.

如图8a所示,当推杆3继续前推,其杆柱34先行顶掣于顶掣点131, 使该C形撕裂沟16因受力而逐渐撕裂,同时对未设沟槽部位形成一力矩, 从而令对应该部位的环形撕裂沟17较薄部位因而断裂,并沿着周缘蔓延, 唯未形成完全断裂状态。 As shown in FIG 8a, when the ram 3 continues to push the front, ahead of its pole top latch 34 to the top point of the detent 131, so that the C-shaped groove 16 tear progressively tear due to force, while the groove portion is not provided forming a moment, so that the annular groove of the tear portion 17 to be thinner thereby fracture site, and spread along the peripheral edge, the only state is not formed completely broken.

如图8b所示,此时,将推杆3向内縮回,使该环形撕裂沟17受力后完全与液筒l分离。 8b, at this time, the push rod 3 is retracted inwardly so that the annular groove 17 by the force tear completely separated from the liquid cylinder l. 如图9所示,该推杆3连同套环4、插榫14、定位环5及针头2后拉至筒室11内,直到筒室11后端开口的止挡部18与杆头部35形成卡掣,使推杆3不致再回拉的可能,即可有效防止再使用。 9, the push rod 3 together with collar 4, the tongue 14 is inserted, 2 positioned after the pull ring 5 and the needle to the cylinder chamber 11, the stopper portion 11 until the rear end opening of the cylinder chamber 18 and the club head 35 engaging formation, the push rod 3 may be pulled without return, to prevent reuse.

如图10所示,此时,可经由第一折断部37处将推杆3折断,使针头2、推杆3的一部份及套环4留存于筒室11内。 10, at this time, the push rod 3 can be broken through at the first breaking portion 37, the needle 2, a part of the push rod 3 and the collar 4 retained in the inner tube chamber 11.

如图11所示,随即将折断后推杆3的筒塞部38由液筒1前端开口嵌入,再经由第二折断部39处将推杆3折断,而将该液筒l两端开口分别为杆头部33及筒塞部38所封闭,因此即便将液筒1丢弃,绝无安全上的困扰。 As shown in FIG immediately after breaking the pusher portion 113 of the cylindrical plug 38 by the front end opening of the liquid cylinder 1 fitted, then break through the push rod 3 at the second breaking portion 39, and the liquid cylinder open at both ends, respectively, l a rod 33 and the cylinder head closed by a plug portion 38, so even if the cartridge 1 was discarded, no problems on the security.

如图12及图13所示,是本发明一次性安全注射装置的另一实施例, 其相同于前述实施例的组件均已相同名称及标号代表的,而堪称唯一的差异在于,本实施例无定位环的设置,而在针头2的针座22后段则突设一座环24,其套接于插榫14与筒环15之间,且后方具有一斜削端241。 12 and 13, another safe disposable injection device according to the present embodiment of the invention, which is identical to the embodiment of the assembly have the same names and reference numerals of the preceding embodiment, called the only difference is that, the present embodiment Example no retaining ring is provided, and in the rear section 22 of the needle hub 2 is provided a projecting ring 24 which is sleeved on the tenon interposed between the ring 14 and the cylinder 15, and a rear end 241 having a beveled.

该斜削端241触及顶壁16,此举可避免因两撕裂沟16、 17的弱面设计所可能导致该插榫14摇晃的情况发生,同时若两撕裂沟16、 17不慎破裂,该斜削端241还进一步肩负止漏的效果。 The beveled end 241 touches top wall 16, this can avoid tearing two grooves 16, 17 being weak surface design may lead to shaking of the insertion tenon 14 occurs, while if the two tear groove 16, 17 accidentally break the beveled end 241 further stanch shoulder effect.

本发明所揭示的,乃较佳实施例的一种,举凡局部的变更或修饰而源于本发明的技术思想而为熟习该项技艺的人所易于推知者,俱不脱本发明的专利权范畴。 The present invention is disclosed, one embodiment is the preferred embodiment, but is inferred by the person skilled in the art that whenever a partial easily changed or modified from the technical idea of ​​the present invention, the present invention is not off all patent category.

Claims (12)

  1. 1. 一种一次性安全注射装置,其是由一液筒,一针头,一推杆,及一套环所组成,其特征在于,该针头结合于液筒前端的插榫,该插榫内部设有一扣接部,其与液筒前端顶壁交接处及顶壁与外侧筒环交接处分别设有同心的一C形撕裂沟及一环形撕裂沟;该推杆的杆身前端轴向延伸一具有一卡扣部的杆柱,其穿越并固定该套环,以便可滑移地容置于液筒内。 1. A disposable safety injection device, which is composed of a liquid cartridge, a needle, a plunger, and a ring, and is characterized in that the insertion needle is bonded to the distal end of the barrel tenon liquid inside the insertion tenon is provided with a fastening portion, which is the liquid junction tube distal end of the top wall and the top wall and the junction of the outer cylindrical ring are respectively provided with a concentric groove, and a C-shaped tear tear annular groove; front shaft axis of the push rod extending a pole having a locking portion, and which is fixed through the collar so as to be slidably received in the liquid cylinder.
  2. 2. 如权利要求1所述的一次性安全注射装置,其特征在于,该C形撕裂沟或一环形撕裂沟均具有厚薄变化。 2. The disposable safety injection device according to claim 1, characterized in that the C-shaped groove tear or tear the annular groove has a thickness variation.
  3. 3. 如权利要求l所述的一次性安全注射装置,其特征在于,另包括一定位环,其套接于插榫与筒环之间,并触及液筒顶壁。 L safety disposable injection device according to claim 2, characterized in that, further comprising a positioning ring, which is interposed between the tongue and socket cylinder ring, and reach the liquid cartridge top wall.
  4. 4. 如权利要求1所述的一次性安全注射装置,其特征在于,该扣接部为一卡环,而卡扣部则为一斜向外张的矢形扣榫,而该扣榫卡扣于该卡环。 4. A safety disposable injection device as claimed in claim 1 which snap buckle tongue, characterized in that the fastening portion is a snap ring, the snap buckle tongue portion was a sagittal oblique outwardly sheets, in the snap ring.
  5. 5. 如权利要求1所述的一次性安全注射装置,其特征在于,该液筒后端开口设有一止挡部,其为向内突起的接环,而推杆的杆头部则是由前、 后翼片所构成,该两翼片卡扣于接环而定位。 5. The disposable safety injection device according to claim 1, characterized in that the fluid cylinder is provided with a rear opening stop, which is then inwardly projecting ring, the pusher rod is a head front and rear flap constituted, the plate wings snap ring positioned in contact.
  6. 6. 如权利要求1所述的一次性安全注射装置,其特征在于,该杆柱径向突设一滑动部,其是由两周缘具斜削面的前、后环片所构成。 6. A safety disposable injection device according to claim 1, wherein the stem post protruding radially disposed a sliding portion, which is the front edge of the bevel surface having two weeks after the ring formed sheet.
  7. 7. 如权利要求1所述的一次性安全注射装置,其特征在于,该针头的针座后段突设一座环,其套接于插榫与筒环之间,且后方具有一斜削端, 其触及液筒顶壁。 The disposable safety injection device according to claim 1, characterized in that the rear section of the needle hub protruding from a ring, which is sleeved on the cylinder interposed between the tongue and the ring, and having a beveled rearward end , it contacts the top wall of the liquid cartridge.
  8. 8. 如权利要求1所述的一次性安全注射装置,其特征在于,该推杆在杆柱后方的杆身前段依序设有一杆头部及一第一折断部,该杆头部卡掣于液筒后端开口的止挡部,而令针头、推杆前段及套环收纳于液筒内,随即于第一折断部将推杆折断。 8. The safety disposable injection device according to claim 1, the club head engaging claims, characterized in that the push rod is provided with a sequentially first head and a breaking portion in the rear of the anterior pole shaft, the rear end portion to the cylindrical stopper was opened, so that the needle and the push rod is housed in the pre-stage and the liquid tube collar, then the plunger to the first breaking portion to break.
  9. 9. 如权利要求8所述的一次性安全注射装置,其特征在于,该第一折断部后方依序设有一筒塞部及一第二折断部,该筒塞部嵌置于液筒前端开口,并于第二折断部将推杆折断。 9. A safety disposable injection device according to claim 8, characterized in that, behind the first breaking portion are sequentially provided with a cylindrical plug portion and a second breaking portion, the cylindrical portion fitted plug was placed in the barrel front end opening and the second part will break putt break.
  10. 10.如权利要求1所述的一次性安全注射装置,其特征在于,该扣接部与c形撕裂沟的顶壁内面突设一顶掣点。 10. The disposable safety injection device according to claim 1, wherein the inner surface of the top wall of the engaging portion with the tear-shaped groove c is provided a detent projection point.
  11. 11.如权利要求10所述的一次性安全注射装置,其特征在于,该顶掣点位于该扣接部与c形撕裂沟中央位置。 11. The disposable safety injection device as claimed in claim 10, characterized in that the top catch point located at the engaging portion and the tear groove center position c.
  12. 12.如权利要求10所述的一次性安全注射装置,其特征在于,该顶掣点为凸点或凸肋。 12. The disposable safety injection device of claim 10, characterized in that the top catch point bumps or ribs.
CN 200610109823 2006-08-16 2006-08-16 Disposable safety injecting device CN100536950C (en)

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CN100536950C true CN100536950C (en) 2009-09-09

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CN102631730B (en) * 2012-05-03 2013-07-10 蔡根顺 Ejection-type self-destructive syringe

Citations (6)

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Publication number Priority date Publication date Assignee Title
US5000738A (en) 1989-05-11 1991-03-19 Lavallo Frank Protective syringe with frangible barrel
US5382235A (en) 1993-07-07 1995-01-17 R.M.S. Safety, Inc. Device for capturing and retracting the needle cannula of a disposable syringe
US5458576A (en) 1993-12-22 1995-10-17 Habley Medical Technology Corp. Safety syringe with retracting needle
US6432082B1 (en) 2001-03-20 2002-08-13 Cho-Ying Chen Safety syringe
US6908450B1 (en) 2004-02-27 2005-06-21 Chang-Tzu Chen Syringe protective structure
CN200954297Y (en) 2006-08-18 2007-10-03 陈昌慈 Disposable safety injector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000738A (en) 1989-05-11 1991-03-19 Lavallo Frank Protective syringe with frangible barrel
US5382235A (en) 1993-07-07 1995-01-17 R.M.S. Safety, Inc. Device for capturing and retracting the needle cannula of a disposable syringe
US5458576A (en) 1993-12-22 1995-10-17 Habley Medical Technology Corp. Safety syringe with retracting needle
US6432082B1 (en) 2001-03-20 2002-08-13 Cho-Ying Chen Safety syringe
US6908450B1 (en) 2004-02-27 2005-06-21 Chang-Tzu Chen Syringe protective structure
CN200954297Y (en) 2006-08-18 2007-10-03 陈昌慈 Disposable safety injector

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