CN103357090A - Safety device for injection needle - Google Patents

Abstract

A safety device of injection needle is used for covering the needle of a syringe, the needle comprises a needle base and a needle body, the safety device of injection needle comprises a telescopic sleeve unit, a first combining piece and a second combining piece. The sleeve unit comprises a connecting end part and a deformable end part which can be deformed by external force to open and close and is provided with two opposite parts. The first combining piece and the second combining piece are respectively arranged at two opposite parts of the deformable end part and can be matched with each other in a separable way to ensure that the deformable end part keeps closed or defines an opening. The sleeve unit can be covered by the needle body when being unfolded, and the needle body can penetrate through the opening of the deformable end part when being contracted. Thus, a safety device of the injection needle which is free from disassembly and can reduce the danger of needle stick can be provided.

Description

Translated fromChinese

注射针头的安全装置Safety Devices for Injection Needles

技术领域technical field

本发明涉及一种安全装置，特别是涉及一种注射针头的安全装置。The invention relates to a safety device, in particular to a safety device for injection needles.

背景技术Background technique

参阅图1，现有的注射针筒1包括一针筒部11、一针头12以及一针头套管13。该针头12包含有一与该针筒部11相连接的针座121，以及一由该针座121沿一长度方向延伸且可供注射输液用的针体122。该针头套管13为一端封闭的塑料长管体。Referring to FIG. 1 , a conventional injection syringe 1 includes asyringe portion 11 , aneedle 12 and aneedle sleeve 13 . Theneedle 12 includes aneedle base 121 connected to theneedle barrel 11 , and aneedle body 122 extending from theneedle base 121 along a length direction and used for injection and transfusion. Theneedle sleeve 13 is a long plastic tube with one end closed.

现有的注射针筒1未使用时，该针头套管13是紧配合地套接在该针座121上，并同时包覆住该针体122使其不外露，可用来避免发生针扎的危险以及避免造成该针体122的污染。在注射使用时，一使用者必须先将该针头套管13从该针座121上拔除，使该针头套管13与该针头12完全分离，此时若不慎遗失该针头套管13，而无法在使用后即刻套覆住该针头12，则将会增加意外发生针扎的危险。When the existing injection syringe 1 is not in use, theneedle sleeve 13 is tightly fitted on theneedle base 121, and at the same time covers theneedle body 122 so that it is not exposed, which can be used to avoid needle sticks hazard and avoid contamination of theneedle body 122. When injecting, a user must first pull out theneedle sleeve 13 from theneedle base 121 to completely separate theneedle sleeve 13 from theneedle 12. If theneedle sleeve 13 is accidentally lost, the Failure to cap theneedle 12 immediately after use increases the risk of accidental needle sticks.

在结束注射后，该使用者必须以一手拿持该针头套管13沿该长度方向往该针筒部11的方向移动来套覆该针体122，此时因为移动套覆的方向即正对着该针体122的尖端部，故常常容易因为不小心地操作而在移动套覆的过程中不慎发生意外，而导致针扎。After finishing the injection, the user must hold theneedle sleeve 13 with one hand and move along the lengthwise direction toward thebarrel portion 11 to cover theneedle body 122. Touching the tip of theneedle body 122, it is often easy to cause accidents in the process of moving the covering due to careless operation, resulting in needle sticks.

发明内容Contents of the invention

本发明的目的在于提供一种免拆卸、在套覆时可减少发生针扎危险、可伸缩且简易操作的注射针头的安全装置。The object of the present invention is to provide a safety device for an injection needle that is free from disassembly, can reduce the risk of needle sticks during sheathing, is retractable, and is easy to operate.

本发明注射针头的安全装置，用于套覆一针筒的针头，该针头包含有一针座及一由该针座沿一长度方向延伸的针体，该注射针头的安全装置包含有一套筒单元、一第一结合件及一第二结合件。The safety device of the injection needle of the present invention is used to cover the needle of a syringe, the needle includes a needle seat and a needle body extending from the needle seat along a length direction, the safety device of the injection needle includes a sleeve unit , a first coupling part and a second coupling part.

该套筒单元可沿该长度方向伸缩，包括一邻近该针座的连接端部，以及一远离该针座且可受外力变形而启闭的可变形端部。该可变形端部具有两相对部位，且可在一第一状态与一第二状态间变形。The sleeve unit can expand and contract along the length direction, and includes a connecting end adjacent to the needle base and a deformable end far away from the needle base, which can be deformed by external force to open and close. The deformable end has two opposite parts, and can be deformed between a first state and a second state.

在该第一状态下，该两相对部位彼此靠近而封闭该可变形端部，在该第二状态下，该两相对部位彼此远离而使该可变形端部定义出一开口。In the first state, the two opposite parts are close to each other to close the deformable end; in the second state, the two opposite parts are far away from each other so that the deformable end defines an opening.

该第一结合件及该第二结合件，分别设置于该可变形端部的两相对部位，可分离地相配合而使该可变形端部维持在该第一状态。该套筒单元可在一展开状态及一收缩状态间切换，在该展开状态时，该针体被套覆于该套筒单元中，在该收缩状态时，该针体穿过该可变形端部的开口且延伸出该套筒单元外。The first coupling part and the second coupling part are respectively arranged on two opposite parts of the deformable end part, and are detachably matched to maintain the deformable end part in the first state. The sleeve unit can be switched between an expanded state and a contracted state. In the expanded state, the needle body is covered in the sleeve unit. In the contracted state, the needle body passes through the deformable end opening and extending out of the sleeve unit.

较佳地，该套筒单元包括一具有该连接端部的基座筒、一可滑移地套设于该基座筒外周面的中间筒，以及一可滑移地套设于该中间筒外周面且具有该可变形端部的终端筒。Preferably, the sleeve unit includes a base cylinder having the connecting end, an intermediate cylinder slidably sleeved on the outer peripheral surface of the base cylinder, and a slidably sleeved intermediate cylinder The outer peripheral surface and the terminal cylinder having the deformable end portion.

较佳地，该两相对部位分别形成有一第一卡槽及一第一卡条，进而分别定义出该第一结合件及该第二结合件，该第一卡槽及该第一卡条可分离地相嵌合而使该可变形端部维持在该第一状态。Preferably, the two opposite parts respectively form a first card slot and a first card bar, and then respectively define the first joint part and the second joint part, and the first card slot and the first card bar can be The deformable end portion is separately fitted to maintain the first state.

更佳地，该第一结合件及该第二结合件分别贴合于该可变形端部的该两相对部位，该第一结合件形成有一第一卡槽，该第二结合件包括一第一卡条，该第一卡槽及该第一卡条可分离地相嵌合而使该可变形端部维持在该第一状态。More preferably, the first coupling part and the second coupling part are attached to the two opposite parts of the deformable end respectively, the first coupling part is formed with a first slot, and the second coupling part includes a first A clamping strip, the first clamping groove and the first clamping strip are detachably fitted together to maintain the deformable end in the first state.

较佳地，该中间筒具有一远离该针座的定位端部，该定位端部的外周面形成有一可供与该第一卡槽可分离地相嵌合的第二卡条，以及一可供与该第一卡条可分离地相嵌合的第二卡槽。Preferably, the intermediate cylinder has a positioning end away from the needle hub, and the outer peripheral surface of the positioning end forms a second clamping strip which can be detachably fitted with the first clamping slot, and a second clamping strip which can be detachably engaged with the first clamping groove, and a The first clamping strip is detachably fitted into the second clamping slot.

较佳地，该中间筒的定位端部的端面形成有一可供该针体稳定地穿设的定位针孔。Preferably, the end surface of the positioning end of the intermediate cylinder is formed with a positioning needle hole through which the needle can stably pass.

较佳地，该套筒单元的连接端部是与该针座可分离地相螺接。Preferably, the connecting end of the sleeve unit is detachably screwed to the needle hub.

本发明的有益效果在于：通过该第一结合件及该第二结合件可分离地相配合而使该套筒单元的可变形端部维持封闭或变形开启，利用该套筒单元可免拆卸地收缩使该针体外露以供使用，将套筒单元展开后即可用于套覆该针体，因此在套覆时可以减少发生针扎的危险。The beneficial effect of the present invention is that: the deformable end of the sleeve unit is kept closed or deformed and opened through the detachable matching of the first coupling part and the second coupling part, and the sleeve unit can be used without detachment The shrinkage makes the needle exposed for use, and the sleeve unit can be used to sheath the needle body after being unfolded, so the danger of needle sticks can be reduced during sheathing.

附图说明Description of drawings

图1是一立体图，说明一现有的注射针头的安全套管；Fig. 1 is a perspective view illustrating a safety sleeve of an existing injection needle;

图2是一立体分解图，说明本发明注射针头的安全装置的一较佳实施例；Fig. 2 is a three-dimensional exploded view illustrating a preferred embodiment of the safety device of the injection needle of the present invention;

图3是一立体图，说明该较佳实施例的一可变形端部处于一第二状态；Fig. 3 is a perspective view illustrating a deformable end portion of the preferred embodiment in a second state;

图4是一剖面图，说明该较佳实施例的一套筒单元处于一展开状态；Fig. 4 is a sectional view illustrating that a sleeve unit of the preferred embodiment is in an unfolded state;

图5是一剖面图，说明该较佳实施例的该套筒单元处于一收缩状态；Fig. 5 is a sectional view illustrating that the sleeve unit of the preferred embodiment is in a contracted state;

图6是一立体图，说明该较佳实施例的该可变形端部处于一第一状态；Fig. 6 is a perspective view illustrating the deformable end portion of the preferred embodiment in a first state;

图7是一局部剖面图，说明该较佳实施例的该可变形端部处于该第一状态；以及Figure 7 is a partial cross-sectional view illustrating the deformable end portion of the preferred embodiment in the first state; and

图8是一局部剖面图，说明该较佳实施例的一第一结合件及一第二结合件的另一态样。Fig. 8 is a partial sectional view illustrating another form of a first coupling part and a second coupling part of the preferred embodiment.

具体实施方式Detailed ways

下面结合附图及实施例对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

参阅图2与图3，本发明注射针头的安全装置的一较佳实施例，用于套覆一针筒的针头2，该针头2包含有一针座21及一由该针座21沿一长度方向延伸的针体22。该注射针头的安全装置包含有一套筒单元3、一第一结合件4及一第二结合件5。Referring to Fig. 2 and Fig. 3, a preferred embodiment of the safety device of the injection needle of the present invention is used to cover the needle 2 of a syringe, the needle 2 includes aneedle seat 21 and aneedle seat 21 along a length Theneedle body 22 extending in the direction. The safety device of the injection needle includes asleeve unit 3 , afirst coupling part 4 and asecond coupling part 5 .

该套筒单元3是由多个套筒所组成，且可沿该长度方向伸缩。本较佳实施例的套筒单元3包括一基座筒31、一可滑移地套设于该基座筒31外周面的中间筒32，以及一可滑移地套设于该中间筒32外周面的终端筒33。Thesleeve unit 3 is composed of a plurality of sleeves, and can expand and contract along the length direction. Thesleeve unit 3 of this preferred embodiment includes abase cylinder 31, anintermediate cylinder 32 slidably sleeved on the outer peripheral surface of thebase cylinder 31, and a slidably sleevedintermediate cylinder 32. Theterminal cylinder 33 on the outer peripheral surface.

该基座筒31具有一邻近该针座21且可与该针座21可分离地相螺接的连接端部311。Thebase barrel 31 has a connectingend portion 311 adjacent to theneedle hub 21 and detachably screwed to theneedle hub 21 .

注意的是，熟悉此技术者也可以了解到该连接端部311可以其他方式与该针座21连接，例如通过彼此紧压迫套接或互相卡合等方式。此外，该连接端部311也可以被设计为不与该针座21相连接，而是设计为直接与一针筒相连接。It should be noted that those skilled in the art can also understand that theconnection end 311 can be connected with theneedle hub 21 in other ways, for example, by pressing and socketing each other or engaging with each other. In addition, theconnection end 311 can also be designed not to be connected to theneedle hub 21 , but to be directly connected to a syringe.

该中间筒32具有一远离该针座21的定位端部321，该定位端部321的外周面沿周缘方向形成有呈位置对称的一第二卡槽324及一第二卡条325。该中间筒32的定位端部321的端面形成有一可供该针体22稳定地穿设而在伸缩过程中不会偏移的定位针孔322。Themiddle cylinder 32 has a positioning end 321 away from theneedle hub 21 , and asecond locking groove 324 and asecond locking bar 325 are formed symmetrically on the outer peripheral surface of the positioning end 321 along the peripheral direction. The end surface of the positioning end 321 of theintermediate cylinder 32 forms apositioning needle hole 322 through which theneedle body 22 can stably pass through without shifting during the stretching process.

该终端筒33具有一远离该针座21且可受外力变形而启闭的可变形端部331，该可变形端部331具有两相对部位331a、331b。该第一结合件4与该第二结合件5分别设置于该可变形端部331的两相对部位331a、331b的内周面上，且可分离地相配合而使该可变形端部331维持在封闭的状态。Theterminal cylinder 33 has adeformable end portion 331 that is far away from theneedle hub 21 and can be deformed by an external force to open and close. Thedeformable end portion 331 has twoopposite portions 331a, 331b. Thefirst coupling part 4 and thesecond coupling part 5 are respectively arranged on the inner peripheral surfaces of the twoopposite parts 331a, 331b of thedeformable end part 331, and are detachably engaged so that thedeformable end part 331 maintains in closed state.

在本较佳实施例中，该第一结合件4与该第二结合件5是与该两相对部位331a、331b为一体成形的构造。该两相对部位331b、331a分别形成有一第一卡槽41及一第一卡条51，而分别定义出该第一结合件4及该第二结合件5，该第一卡槽41以及该第一卡条51可分离地相嵌合而使该可变形端部331维持在封闭的状态。In this preferred embodiment, thefirst coupling part 4 and thesecond coupling part 5 are integrally formed with the twoopposite parts 331a, 331b. The twoopposite parts 331b, 331a are respectively formed with afirst clamping groove 41 and afirst clamping bar 51, and respectively define thefirst coupling part 4 and thesecond coupling part 5, thefirst clamping groove 41 and the second coupling part. Aclamping strip 51 is detachably fitted to keep thedeformable end portion 331 in a closed state.

此外，该第一结合件4与该第二结合件5也可以为独立设计的组件，继而设在该两相对部位331a、331b的内周面上，其中该第一结合件4形成有该第一卡槽41，该第二结合件5包括该第一卡条51(如图8所示)。In addition, thefirst coupling part 4 and thesecond coupling part 5 can also be independently designed components, and then provided on the inner peripheral surfaces of the twoopposite parts 331a, 331b, wherein thefirst coupling part 4 is formed with the secondA card slot 41, thesecond coupling member 5 includes the first card bar 51 (as shown in FIG. 8 ).

在本较佳实施例中，该第一结合件4与该第二结合件5分别为该第一卡槽41及该第一卡条51，但熟悉此技术者也可以了解到该第一结合件4及该第二结合件5也可以设计为其他可分离地相连接的构造，例如该第一结合件4及该第二结合件5分别为一可以互相磁吸的软性磁铁。In this preferred embodiment, thefirst coupling part 4 and thesecond coupling part 5 are respectively thefirst clamping slot 41 and thefirst clamping strip 51, but those skilled in the art can also understand that the first coupling Thecomponent 4 and thesecond coupling component 5 can also be designed as other detachably connected structures, for example, thefirst coupling component 4 and thesecond coupling component 5 are respectively a soft magnet capable of magnetically attracting each other.

该基座筒31及该中间筒32的外周面沿该长度方向分别延伸形成有两导引槽313、328。该中间筒32及该终端筒33的内周面分别还具有与所述导引槽313、328相配合的两导引件327、334。该中间筒32的每一导引件327分别可滑移地嵌接在该基座筒31的对应导引槽313中，该终端筒33的每一导引件334分别可滑移地嵌接在该中间筒32的对应导引槽328中。所述导引槽313、328及所述导引件327、334相配合作动，可使该套筒单元3稳定地伸缩而不会发生偏转。在本较佳实施例中，所述导引件327、334分别为一沿该长度方向延伸的凸条，其可滑移地嵌接在相对应的导引槽313、328中。Two guidinggrooves 313 , 328 are respectively formed on outer peripheral surfaces of thebase cylinder 31 and themiddle cylinder 32 extending along the length direction. The inner peripheral surfaces of themiddle cylinder 32 and theterminal cylinder 33 further have twoguide pieces 327 , 334 matched with theguide grooves 313 , 328 . Eachguide piece 327 of themiddle barrel 32 is slidably engaged in thecorresponding guide groove 313 of thebase barrel 31, and eachguide piece 334 of theterminal barrel 33 is slidably engaged respectively. In thecorresponding guide groove 328 of theintermediate barrel 32 . The guide grooves 313, 328 and theguide members 327, 334 cooperate to make thesleeve unit 3 expand and contract stably without deflection. In this preferred embodiment, theguide members 327 , 334 are respectively a protruding strip extending along the length direction, which is slidably embedded in thecorresponding guide grooves 313 , 328 .

该基座筒31及该中间筒32的外周面在远离该针座21的一端上沿周缘方向分别形成有一环形定位槽312、323。该中间筒32及该终端筒33的内周面在邻近该针座21的一端上沿周缘方向分别还具有一定位环326、333。在该套筒单元3展开时，该基座筒31及该中间筒32的环形定位槽312、323分别可供该中间筒32及该终端筒33相对应的定位环326、333可分离地卡设定位。Annular positioning grooves 312 , 323 are respectively formed on the outer peripheral surfaces of thebase cylinder 31 and theintermediate cylinder 32 at ends away from theneedle holder 21 along the peripheral direction. The inner peripheral surfaces of themiddle cylinder 32 and theterminal cylinder 33 respectively have apositioning ring 326 , 333 on one end adjacent to theneedle hub 21 along the peripheral direction. When thesleeve unit 3 is unfolded, theannular positioning grooves 312, 323 of thebase cylinder 31 and theintermediate cylinder 32 can be detachably locked by the corresponding positioning rings 326, 333 of theintermediate cylinder 32 and theterminal cylinder 33 respectively. set bit.

此外，该中间筒32的第二卡槽324及第二卡条325是位于该环型定位槽323与定位端部321的端面两者间，因此在该套筒单元3收缩时，该中间筒32的第二卡槽324则可供该终端筒33的第一卡条51卡设，该中间筒32的第二卡条325可分离地卡设在该终端筒33的第一卡槽41中。In addition, thesecond clamping groove 324 and thesecond clamping strip 325 of theintermediate cylinder 32 are located between theannular positioning groove 323 and the end surface of the positioning end 321, so when thesleeve unit 3 shrinks, the intermediate cylinder Thesecond clamping slot 324 of 32 can be clamped by thefirst clamping strip 51 of theterminal cylinder 33, and thesecond clamping strip 325 of theintermediate cylinder 32 can be detachably clamped in thefirst clamping groove 41 of theterminal cylinder 33 .

参阅图3及图6，该终端筒33的可变形端部331可在一第一状态与一第二状态间变形。在该第一状态下，该两相对部位331a、331b彼此贴近，且该第一卡槽41及该第一卡条51彼此相嵌合而封闭该可变形端部331，此时该可变形端部331呈一扁平状构造(如图7)。在该第二状态下，该两相对部位331a、331b彼此远离而使该可变形端部331定义出一开口332。Referring to FIG. 3 and FIG. 6 , thedeformable end portion 331 of theterminal barrel 33 can be deformed between a first state and a second state. In the first state, the twoopposite parts 331a, 331b are close to each other, and thefirst clamping groove 41 and thefirst clamping bar 51 are engaged with each other to close thedeformable end 331. At this time, the deformable end Theportion 331 has a flat structure (as shown in FIG. 7 ). In the second state, the twoopposite parts 331 a , 331 b are away from each other so that thedeformable end portion 331 defines anopening 332 .

当该可变形端部331处于该第一状态时，施力压迫该可变形端部331的扁平状构造的两相反侧，可使该第一卡槽41及该第一卡条51彼此脱离嵌合状态，该两相对部位331a、331b变形且彼此远离，继而使该可变形端部331形成出可供该针体22穿出的开口332。When thedeformable end portion 331 is in the first state, pressing the two opposite sides of the flat structure of thedeformable end portion 331 can make thefirst clamping groove 41 and thefirst clamping strip 51 disengage from each other. In the closed state, the twoopposite parts 331a, 331b deform and move away from each other, and then thedeformable end portion 331 forms anopening 332 through which theneedle body 22 can pass.

参阅图4及图5，该套筒单元3可在一展开状态及一收缩状态间切换。在该展开状态时，该中间筒32的定位环326可分离地卡设在该基座筒31的环形定位槽312中，该终端筒33的定位环333可分离地卡设在该中间筒32的环形定位槽323中。通过所述环形定位槽312、323及所述定位环326、333的相配合卡设，可使该套筒单元3稳定地维持在该展开状态。Referring to FIG. 4 and FIG. 5 , thesleeve unit 3 can be switched between an expanded state and a contracted state. In the unfolded state, thepositioning ring 326 of themiddle cylinder 32 is detachably engaged in theannular positioning groove 312 of thebase cylinder 31 , and thepositioning ring 333 of theterminal cylinder 33 is detachably engaged in theintermediate cylinder 32 in theannular positioning groove 323. Thesleeve unit 3 can be stably maintained in the unfolded state through the engagement of theannular positioning grooves 312 , 323 and the positioning rings 326 , 333 .

此时，该针体22被套覆于该套筒单元3中，且该针体22穿设过该中间筒32的定位针孔322。施力使该终端筒33往该针座21方向移动，该基座筒31、该中间筒32及该终端筒33彼此叠置，该套筒单元3即处于该收缩状态。At this time, theneedle body 22 is sheathed in thesleeve unit 3 , and theneedle body 22 passes through thepositioning needle hole 322 of themiddle cylinder 32 . Force is applied to move theterminal cylinder 33 toward theneedle hub 21 , thebase cylinder 31 , theintermediate cylinder 32 and theterminal cylinder 33 overlap each other, and thesleeve unit 3 is in the retracted state.

在该收缩状态时，该终端筒33的第一卡槽41及第一卡条51分别与该中间筒32的第二卡条325及第二卡槽324卡设。此时，该针体22穿过该可变形端部331的开口332且延伸出该套筒单元3外。在该套筒单元3伸缩的过程中，该定位针孔322恒供该针体22穿设，且使该针体22位于该套筒单元3的同一轴线上而不发生偏移。In the retracted state, thefirst locking slot 41 and thefirst locking bar 51 of theterminal barrel 33 are respectively locked with thesecond locking bar 325 and thesecond locking slot 324 of themiddle barrel 32 . At this time, theneedle body 22 passes through theopening 332 of thedeformable end portion 331 and extends out of thesleeve unit 3 . During the telescoping process of thesleeve unit 3 , thepositioning needle hole 322 is always used for theneedle body 22 to pass through, and theneedle body 22 is located on the same axis of thesleeve unit 3 without deviation.

使用前，先使该可变形端部331处于该形成开口332的第二状态，再使该套筒单元3处于该收缩状态，可裸露出该针体22以供注射用。使用后，先使该套筒单元3顺着该针头2的方向回复至该展开状态，再施力压迫该可变形端部331的两相对部位331a、331b，可使该可变形端部331处于该封闭的第一状态。Before use, make thedeformable end portion 331 in the second state where theopening 332 is formed, and then make thesleeve unit 3 in the retracted state, so that theneedle body 22 can be exposed for injection. After use, first make thesleeve unit 3 return to the expanded state along the direction of the needle 2, and then press the twoopposite parts 331a, 331b of thedeformable end 331, so that thedeformable end 331 is in the The closed first state.

综上所述，通过该可变形端部331的两相对部位331a、331b变形，该第一卡槽41及该第一卡条51可分离地相嵌合而使该套筒单元3的可变形端部331维持封闭或形成开口332。同时利用本发明套筒单元3的伸缩操作，免拆卸地使该针体22裸露或被套覆，可以避免发生针扎的危险，故确实能达成本发明的目的。To sum up, through the deformation of the twoopposite parts 331a, 331b of thedeformable end portion 331, thefirst clamping groove 41 and thefirst clamping bar 51 are detachably fitted together so that thedeformable sleeve unit 3End 331 remains closed or forms opening 332 . At the same time, by using the telescopic operation of thesleeve unit 3 of the present invention, theneedle body 22 can be exposed or covered without disassembly, so that the danger of needle sticking can be avoided, so the purpose of the present invention can indeed be achieved.

惟以上所述者，仅为本发明的较佳实施例而已，当不能以此限定本发明实施的范围，即大凡依本发明权利要求及发明说明内容所作的简单的等效变化与修饰，皆仍属本发明专利涵盖的范围内。But the above-mentioned ones are only preferred embodiments of the present invention, and should not limit the scope of the present invention with this, that is, all simple equivalent changes and modifications made according to the claims of the present invention and the content of the description of the invention are all Still belong to the scope that the patent of the present invention covers.

Claims (8)

Translated fromChinese

1.一种注射针头的安全装置，用于套覆一只针筒的针头，该针头包含有一个针座及一个由该针座沿一个长度方向延伸的针体，其特征在于：1. A safety device for an injection needle, which is used to cover the needle of a syringe, the needle includes a needle seat and a needle body extending from the needle seat along a length direction, characterized in that:该注射针头的安全装置包含有：Safety devices for this injection needle include:一个可沿该长度方向伸缩的套筒单元，包括一个邻近该针座的连接端部，以及一个远离该针座且可受外力变形而启闭的可变形端部，该可变形端部具有两个相对部位，且可在一种第一状态与一种第二状态间变形，在该第一状态下，该两个相对部位彼此靠近而封闭该可变形端部，在该第二状态下，该两个相对部位彼此远离而使该可变形端部定义出一个开口；以及A sleeve unit that can expand and contract along the length direction includes a connecting end adjacent to the needle base and a deformable end that is far away from the needle base and can be deformed by external force to open and close. The deformable end has two opposite parts, and can be deformed between a first state and a second state, in which the two opposite parts approach each other to close the deformable end, and in the second state, the two opposing portions are spaced away from each other such that the deformable end defines an opening; and一个第一结合件及一个第二结合件，分别设置于该可变形端部的两个相对部位，可分离地相配合而使该可变形端部维持在该第一状态，该套筒单元可在一种展开状态及一种收缩状态间切换，在该展开状态时，该针体被套覆于该套筒单元中，在该收缩状态时，该针体穿过该可变形端部的开口且延伸出该套筒单元外。A first coupling part and a second coupling part are respectively arranged on two opposite parts of the deformable end part, and are detachably matched to keep the deformable end part in the first state, and the sleeve unit can switch between an expanded state, in which the needle body is covered in the sleeve unit, and a contracted state, in which the needle body passes through the opening of the deformable end and extend out of the sleeve unit.2.根据权利要求1所述的注射针头的安全装置，其特征在于：该两个相对部位分别形成有一个第一卡槽及一个第一卡条，进而分别定义出该第一结合件及该第二结合件，该第一卡槽及该第一卡条可分离地相嵌合而使该可变形端部维持在该第一状态。2. The safety device for injection needles according to claim 1, characterized in that: the two opposite parts are respectively formed with a first clamping groove and a first clamping bar, and further define the first coupling part and the The second combination part, the first clip slot and the first clip bar are detachably fitted together so that the deformable end part maintains the first state.3.根据权利要求1所述的注射针头的安全装置，其特征在于：该第一结合件及该第二结合件分别贴合于该可变形端部的该两个相对部位，该第一结合件形成有一个第一卡槽，该第二结合件包括一个第一卡条，该第一卡槽及该第一卡条可分离地相嵌合而使该可变形端部维持在该第一状态。3. The safety device for injection needles according to claim 1, wherein the first coupling part and the second coupling part are attached to the two opposite parts of the deformable end respectively, and the first coupling part The part is formed with a first card slot, and the second combination part includes a first card bar, and the first card slot and the first card bar are detachably engaged so that the deformable end remains on the first bar. state.4.根据权利要求1所述的注射针头的安全装置，其特征在于：该套筒单元包括一个具有该连接端部的基座筒、一个可滑移地套设于该基座筒外周面的中间筒，以及一个可滑移地套设于该中间筒外周面且具有该可变形端部的终端筒。4. The safety device for injection needles according to claim 1, characterized in that: the sleeve unit comprises a base cylinder having the connecting end, a sleeve slidably sleeved on the outer peripheral surface of the base cylinder an intermediate cylinder, and a terminal cylinder which is slidably sleeved on the outer peripheral surface of the intermediate cylinder and has the deformable end.5.根据权利要求4所述的注射针头的安全装置，其特征在于：该第一结合件形成有一个第一卡槽，该第二结合件形成有一个第一卡条，该第一卡槽及该第一卡条可分离地相嵌合而使该可变形端部维持在该第一状态。5. The safety device for injection needles according to claim 4, characterized in that: the first coupling part is formed with a first clamping groove, the second coupling part is formed with a first clamping strip, and the first clamping groove and the first clamping strip are detachably engaged to maintain the deformable end in the first state.6.根据权利要求5所述的注射针头的安全装置，其特征在于：该中间筒具有一个远离该针座的定位端部，该定位端部的外周面形成有一个可供与该第一卡槽可分离地相嵌合的第二卡条，以及一个可供与该第一卡条可分离地相嵌合的第二卡槽。6. The safety device for injection needles according to claim 5, characterized in that: the intermediate cylinder has a positioning end far away from the needle seat, and the outer peripheral surface of the positioning end is formed with a slot for receiving the first lock A detachably fitted second clip, and a second clip slot capable of detachably fitted with the first clip.7.根据权利要求6所述的注射针头的安全装置，其特征在于：该中间筒的定位端部的端面形成有一个可供该针体稳定地穿设的定位针孔。7 . The safety device for injection needles according to claim 6 , wherein a positioning needle hole is formed on the end surface of the positioning end of the intermediate barrel, through which the needle can stably pass. 8 .8.根据权利要求1所述的注射针头的安全装置，其特征在于：该套筒单元的连接端部是与该针座可分离地相螺接。8. The safety device for injection needles according to claim 1, characterized in that: the connecting end of the sleeve unit is detachably screwed to the needle hub.

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