CN2628071Y - Syringe reservoir - Google Patents

Syringe reservoir Download PDF

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Publication number
CN2628071Y
CN2628071Y CN 03244070 CN03244070U CN2628071Y CN 2628071 Y CN2628071 Y CN 2628071Y CN 03244070 CN03244070 CN 03244070 CN 03244070 U CN03244070 U CN 03244070U CN 2628071 Y CN2628071 Y CN 2628071Y
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Prior art keywords
engaging
head
provided
end
wall
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CN 03244070
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Chinese (zh)
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侯景昭
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比特克生化科技股份有限公司
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Abstract

The utility model relates to injection syringe, which comprises a syringe, a needle base and a pusher bar. Numerous axial seams are positioned on the wall of the external ring of the unidirectional blocking room which is positioned at the back of the needle base and a unidirectional blocking convex slip is arranged on the surface of the inner wall of unidirectional blocking room; meanwhile, another one-way blocking convex slip is arranged on the block head positioned at the front end of the pusher bar and a plurality of seams are arranged on the unidirectional blocking convex slip; while the axial seams positioned on the wall of the external ring of the unidirectional blocking room and the seams positioned on the unidirectional blocking convex slip push the pusher bar towards the front end, the block head positioned at the front end of the bar can be easily plugged into the unidirectional blocking room positioned at the back of the needle base; the block head(positioned at the front end of the pusher bar) stretches forward and an axial column is arranged there; while the pusher bar is pushed forward and reaches the front end, the liquid medicine in the flow passage can be pushed out through the flow passage of the needle base that the axial column stretches in, so as to reduce the remains of the liquid medicine.

Description

注射针筒 Syringe

技术领域 FIELD

本实用新型涉及一种注射针筒,尤指针对一种在使用后可将注射针头抽回收藏于注射筒内,同时可破坏推杆,令其无法再重覆使用的注射针筒予以改良,而提供一种更为实用的注射针筒。 The present invention relates to an injection syringe, especially for the use of the latter can withdraw the needle in the syringe collection, at the same time destroy the putter, so that it can no longer re-use of syringes to be improved, to provide a more practical syringe.

背景技术 Background technique

如图1至图4所示,该种现有注射针筒主要由一注射筒10、针头座20及推杆30等元件所构成;其中:该注射筒10为一前后贯通的圆筒状筒体,其前端内侧壁面径向环设有一止挡壁11,止挡壁11的后方径向环设有一圆弧形凸唇12,再于注射筒10的后端内侧壁面径向环设有一准入不准出的凸唇13。 As shown in FIG. 1 to FIG. 4, the main kinds of conventional syringe 10 is constituted by a syringe, the needle hub 20 and the pusher member 30 and the like; wherein: the syringe barrel 10 is a cylindrical tube through the longitudinal body, the front end wall surface of the radially inner ring is provided with a stop wall 11, rear wall 11 of the stopper ring is provided with an arcuate radial lip 12, then at the radially inner wall surface of the rear end of the syringe barrel 10 is provided with a quasi-cyclic allowed out of the lip 13.

该针头座20的前端凸设有一套筒21,可供注射针头40的套接,中央设有一贯通的流道22,流道22后端形成一准入不准出的单向卡掣室23,又针头座20的外侧壁面设有一径向环设的凹槽24,该凹槽24恰可对应于注射筒10前端内侧壁面径向环设的圆弧形凸唇12。 The projecting distal end of the needle hub 20 is provided with a sleeve 21, the socket 40 for the injection needle, is provided with a central through-flow passage 22, flow passage 22 formed in the rear end of chamber 23 engaging a one-way access allowed out outer wall, and the needle hub 20 is provided with a radially disposed ring groove 24, the groove 24 may correspond exactly to the arcuate lip 12 of the front inner wall surface of the syringe cylinder 10 is radially disposed ring.

该推杆30前端具有一杆头31,推杆30与杆头31间以若干的连接点32予以连接在一起,并令推杆30与杆头31间形成一在使用后可予以折断破坏的折断槽33,杆头31上并套设有一止水环34,且杆头31前端设有一锥状的卡掣头35。 The push rod 30 having a distal head 31, the push rod 30 is connected to head 31 to be connected together with a plurality of points 32 and 30 so that the push rod is formed between the head 31 can be used after a break failure breaking grooves 33, 31 and the head cover is provided with a sealing ring 34, and the head 31 is provided with a tapered distal end engaging head 35.

通过上述的构造,该针头座20与推杆30的杆头31各可依序从注射筒10后端越过凸唇13而塞置于注射筒10内,且针头座20可进一步越过圆弧形凸唇12而塞置于注射筒10的前端,并令针头座20前端的套筒21凸露于注射筒10前端,以供注射针头40的套接(如图1所示);当推杆30向前推送至最前端时,则杆头31前端所设的卡掣头35可被压迫塞入针头座20后端所设的单向卡掣室23内(如图2所示);接着,可将推杆30往后退拉,而可同时将针头座20往后退拉,令注射针头40得以被收藏于注射筒10内(如图3所示);再,当将注射针头40退缩收藏于注射筒10内后,则可将推杆30与杆头31依折断槽33予以折断(如图4所示),令注射针筒在使用后无法再重覆使用,进而达到安全使用的目的。 Through the above configuration, the needle hub 20 and the head 31 of each rod 30 may be sequentially over the lip 10 from the rear end of the syringe barrel 13 and the plug 10 placed within the syringe barrel and over the needle hub 20 may further arcuate lip 12 and the plug 10 to the front of the syringe barrel and needle hub 20 so that the distal end 21 of the sleeve 10 exposed to the front end of the syringe barrel projecting, needle for the socket 40 (Figure 1); when the push rod when pushed forward to the most distal end 30, the head 31 is provided in the front end of the engaging head 35 can be inserted into the compression (Figure 2) engaging the one-way rear chamber 20 established by the needle hub 23; then , plunger 30 may be pulled to the back, while at the same time may be pulled back to the needle hub 20, so that needle 40 is to be concealed inside the syringe 10 (FIG. 3); then, when the needle 40 back lightbox after the syringe 10 in, can push rod 30 and head 31 to be broken by breaking groove 33 (FIG. 4), so that the syringe can not be re-used after repeated use, thus achieve the purpose of safe use .

就以上所述该种现有注射针筒的构造而言,其虽然在使用后可将注射针头40抽回收藏于注射筒10内,同时可破坏推杆30,令其无法再重覆使用,而达到安全使用的目的;但是仍存在以下缺陷:(一)由于当推杆30向前推送至最前端时(如图5所示),通过其前端所设的卡掣头35强迫塞入针头座20后端所设的单向卡掣室23内,令针头座20得与推杆30牢固地结合在一起,以便推杆30往后退拉时,可同时将针头座20往后退拉,令注射针头40得以被收藏于注射筒10内;因此,为使推杆30前端所设的卡掣头35能顺利地塞入针头座20后端所设的单向卡掣室23内,又为使推杆30在往后退拉时,其前端所设的卡掣头35不致于轻易地脱离针头座20后端所设的单向卡掣室23,而能同时带动针头座20往后退拉,该卡掣头35与单向卡掣室23间的配合必须具相当高的精密度,以致将徒增模具制造上的 For the above said kind in terms of the configuration of the conventional syringe which after use although the injection needle 40 can be withdrawn in the collection syringe 10 while the plunger 30 may be damaged, so that it can no longer re-use, to achieve the purpose of safe use; however, the following drawbacks still exist :( a) because when the plunger is pushed to the foremost end 30 forward (FIG. 5), through which the front end of the engaging head 35 is provided to force the needle inserted into the unidirectional seat 20 engaging the rear end of chamber 23 is established, so that the needle hub together with the push rod 20 to give 30 fixedly to the push rod 30 is retracted to pull the needle hub 20 can be simultaneously pulled to the back, so that an injection needle 40 is to be concealed inside the syringe barrel 10; therefore, the push rod 30 is established by engaging the front end of head 35 can be smoothly inserted into the engaging chamber 23 of the one-way rear end of needle hub 20 is established, and is when the push rod 30 to pull back, the front end of the engaging head 35 provided easily as not departing from the engaging chamber 23 the one-way 20 provided in the rear end of the needle hub, the needle hub 20 can be driven simultaneously pulled to the back, the engaging head 35 with a mating one-way snap latch 23 of the chamber must have a relatively high precision, so that the upper mold manufacturing inviting 难度,以及徒增模具保养、维修上的不易,进而提高生产成本;而纵使生产模具的制造、保养与维修均能完善地保持其精密度,但由于塑料原料于注塑成型时,将因冷缩热胀而产生不稳定的收缩现象,以致卡掣头35与单向卡掣室23间的配合时有过紧或过松的缺失发生,而造成产品品质的难以控制,及使用上不便的缺失。 Difficulty, and inviting mold maintenance, the maintenance is not easy, thereby increasing the cost of production; manufactured even mold production, maintenance and repair can maintain its perfect precision, but due to the plastic injection molding material, due to the shrink thermal expansion and contraction phenomena of instability, so that there is tight or too loose deletion occurs when the engaging head 35 with the one-way engaging chamber 23, and the resulting product quality is difficult to control, and inconvenience of the use of deletions .

(二)由于针头座20的流道22前端形成有一药液残留空间,以致当推杆30向前推送至最前端时(如图5所示),将会有部分的药液残留于流道22内,而不符合国际标准必须低于0.075ml的规定。 (B) since the flow channel 22 formed at the tip of the needle hub 20 has a liquid residual space, so that when the push rod 30 to the most distal pushed forward (FIG. 5), there will be a portion of the liquid remaining in the flow channel 22, rather than in line with international standards must be below the prescribed 0.075ml.

发明内容 SUMMARY

本实用新型的目的在于改善上述该种现有注射针筒所存在的缺失,而提供一种在使用上得以更实用的注射针筒构造。 The present invention aims to improve this kind of conventional syringe deletion exists above, and to provide a more practical configuration of the syringe in use.

为达上述目的,本实用新型提供一种注射针筒,包含有一注射筒、针头座及推杆所构成;其主要是于针头座后端所设的单向卡掣室的外环壁设有若干轴向剖缝,并于单向卡掣端室的内壁面设有单向卡掣凸唇;同时,于推杆的杆头前端所设的卡掣头上亦设有一单向卡掣凸唇,该单向卡掣凸唇亦设有若干的剖缝,而通过单向卡掣室外环壁所设的若干轴向剖缝,与单向卡掣凸唇上所设的若干剖缝,令推杆向前推送至最前端时,杆头前端所设的卡掣头可轻易地被压迫塞入针头座后端所设的单向卡掣室内;又,该推杆的杆头前端所设的卡掣头向前延伸有一轴向柱条,当推杆向前推送至最前端时,通过该轴向柱条可伸入针头座的药液流道,而可将药液流道内的药液推送出,进而可降低药液的残留量。 To achieve the above object, the present invention provides a syringe comprising a syringe barrel, plunger and needle hub formed; the main outer wall is a one-way engaging chamber to the rear end of the needle hub is provided with established a plurality of axial cross-sectional slits, and the inner wall surface of the end of the one-way engaging catch chamber is provided with one-way snap lip; while engaging the front end of the head to the head of the plunger has also established a unidirectional hooking lip, the lip engaging way also has a plurality of cross-sectional slits, the slits by a plurality of axial cross-sectional unidirectional engaging the annular wall outside the set of slits and a plurality of cross-sectional unidirectional hooking lip established by , so that when the plunger is pushed forward to the most distal end, the distal end of the head provided in the engaging head can easily be inserted into the one-way compression chamber engaging the needle hub of the rear end of the set; and, the head front end of the push rod established by engaging head extending axially forwardly a column item, when pushed forward to the foremost end of the push rod, through which the strip can be inserted into an axial column liquid flow path of the needle hub, but may be the liquid flow path the liquid pushed out, and thus can reduce the residual amount of liquid.

附图说明 BRIEF DESCRIPTION

图1为现有注射针筒的剖视构造图及使用示意图;图2为现有注射针筒的剖视构造图及使用示意图;图3为现有注射针筒的剖视构造图及使用示意图;图4为现有注射针筒的剖视构造图及使用示意图;图5为现有注射针筒的针头座塞置于注射筒前端的部分放大剖视图;图6为本实用新型的立体构造图;图7为本实用新型的剖视构造图及使用示意图(一);图8为本实用新型的剖视构造图及使用示意图(二);图9为本实用新型的剖视构造图及使用示意图(三);图10为本实用新型的剖视构造图及使用示意图(四);图11为本实用新型的针头座塞置于注射筒前端的部分放大剖视图;图12为图11的II剖视构造图。 And using the configuration diagram of FIG. 1 is a cross-sectional view of the conventional syringe; FIG. 2 is a configuration diagram of the conventional syringe and using a cross-sectional view; FIG. 3 is a cross-sectional view of the conventional syringe and using the schematic configuration of FIG. ; FIG. 4 is a cross-sectional view of the conventional syringe and using the schematic configuration diagram; FIG. 5 is a conventional syringe needle holder stopper was placed partially enlarged sectional view of the front end of the syringe barrel; FIG. 6 is a perspective configuration diagram invention ; Figure 7 is a cross-sectional view of the new and the use of a schematic configuration diagram (a) utility; new configuration view and a sectional schematic view of the use of (b) in FIG. 8 is a utility; FIG. 9 is a sectional view novel configuration and use of the present utility FIG. schematic (III); FIG. 10 is a sectional view of the new and the use of a schematic configuration diagram (d) of the present utility; FIG. 11 new syringe needle holder stopper was placed partially enlarged sectional view of the distal end of the present utility; FIG. 12 FIG. 11 is a II sectional configuration in FIG.

图中符号说明10 注射筒11 止挡壁 11 凸唇13 凸唇20 针头座21 套管 22 流道23 单向卡掣室 24 凹槽30 推杆31 杆头 32 连接点33 折断槽 34 止水环35 卡掣头40 注射针头50 注射筒51 止挡壁 52 凸唇53 凹槽 54 单向卡掣凸唇55 制动凸条60 针头座61 药液流道 62 套接端63 围墙 631 凸唇632 微凸点 633 剖缝634 内螺纹 635 制动凸条64 凹槽 65 单向卡掣室66 止水环 67 轴向剖缝68 单向卡掣凸唇70 推杆71 杆头 72 连接点73 折断槽 74 止水环75 卡掣头 76 单向卡掣片77 单向卡掣凸唇 78 剖缝 DESCRIPTION OF REFERENCE NUMERALS 10 syringe stopper wall 11 13 11 lip 21 lip 20 of the needle cannula holder 22 a unidirectional flow path 23 chamber 24 groove 30 engaging the plunger head 32 connection points 31 33 34 broken seal groove 63 631 wall lip ring 35 engaging the head 40 of the needle 50 injection syringe 51 stop wall 52 groove 54 lip 53 lip 55 unidirectional hooking ribs 60 of the needle hub brake liquid flow path 61 of the socket end 62 632 micro slits the cross-sectional point 633 634 635 braking thread ridge 64 engaging the groove 65 the check ring 67 sealing chamber 66 axially sectional unidirectional slit 68 of the hooking lips 70 push rod 71 attachment point 73 of the head 72 broken seal ring 75 groove 74 head 76 engaging piece 77 engaging unidirectional way hooking the lip sectional seam 78

79 柱条80 针头具体实施方式有关本实用新型为达到目的所运用的技术手段及其构造特征,现配合图6至图12所示的实施例,详细说明如下:请参阅图6所示,本实用新型与上述该种注射针筒同样由一注射筒50、针头座60及推杆70等主要元件所构成;其中:注射筒50(请同时参阅图6、7所示),为一前后贯通的圆管体,其于接近前端的内侧壁面径向环设有一止挡壁51,止挡壁51的后方径向环设有一截面呈圆弧形的凸唇52,并令止挡壁51与凸唇52间形成一径向环设的凹槽53,再于注射筒50的后端内侧壁面径向环设有一准入不准出的单向卡掣凸唇54。 Article 80 of the needle 79 column DETAILED DESCRIPTION structural features and technical means relating to the use purpose of the present invention to achieve, now with the embodiment shown in FIG. 6 to FIG. 12, described in detail as follows: Referring to FIG. 6, the present the invention described above with the same kind of the syringe 50 is constituted by a syringe, the needle hub 60 and the push rod 70 and other principal elements; wherein: a syringe 50 (please also refer to FIG. 6,7), through one of the front and rear the tube body, in which the radially inner wall surface close to the front end of the ring is provided with a stop wall 51, rear wall 51 of the stopper ring provided with a radial cross-sectional circular arc lip 52, and so that the stopper wall 51 and between the lip 52 radially disposed around a recess 53 is formed, and then a radially inner wall surface at the rear end of the syringe barrel 50 is provided with one-way snap ring out of the allowed access a catch lip 54.

针头座60(请同时参阅图6、7所示),其中央形成一前后贯通的药液流道61,药液流道61的前端形成一可供注射针头80套接的套接端62,套接端62的外围环设有一围墙63,围墙63的外侧壁面径向环设有一凸唇631,凸唇631恰可对应于注射筒50前端内侧壁面所径向环设的凹槽53,凸唇631上设有若干微凸点632,令凸唇631得以在非全面性的增加厚度的情形下,提高针头座60塞置于注射筒50前端的紧密度,相对的可令针头座60于制造时不受塑料原料因冷缩热胀所产生的收缩现象影响其精确度,而可提高产品的良率,并可调整针头座60下拉时的力量在三公斤以上;又,针头座60的外侧壁面设有一径向环设的凹槽64,该凹槽64恰可对应于注射筒50前端内侧壁面径向环设的圆弧形凸唇52;再,围墙63设有若干轴向剖缝633,令围墙63具有一向内缩的弹性,围墙63的内侧壁面且设有一内螺 The needle hub 60 (please also refer to FIG. 6 and 7), the center is formed chemical flow passage 61 through a longitudinal front end 61 is formed chemical flow passage for a needle 80 of the socket 62 the socket end, the socket end 62 of the peripheral wall 63 is provided with a ring, a radially outer wall of the ring wall 63 is provided with a lip 631, the lip 631 can be exactly correspond to the front end of the syringe barrel 50 radially disposed around the inner wall surface of the recess 53, projections a plurality of convex points 632 on the lip 631, the lip 631 is so in the case of increasing the thickness of the non-comprehensive, the needle hub 60 to improve the tightness of the stopper is placed in the front end of the syringe barrel 50, opposite the needle hub 60 can make in from plastic raw materials due to thermal expansion or shrinkage of the impact of their manufacturing accuracy and product yield can be improved, the power can be adjusted when the needle hub 60 at three or more drop-down kg; and, 60 of needle hub a radially outer wall is provided with a groove 64 disposed around the groove 64 may correspond exactly to the arcuate lip 52 of the front inner wall surface of the syringe barrel 50 is radially disposed ring; further, the wall section 63 defines a plurality of axial slits 633, so that the wall 63 has been retracted elasticity, and the inner wall surface of the wall 63 is provided with an inner spiral 634,可供注射针头80以旋锁的方式套接于套接端62上;再,药液流道61的后端形成一准入不准出的单向卡掣室65,并于单向卡掣室65的外围套设有一止水环66,以防止药液从针头座60与注射筒50的接触面渗漏。 634, for the needle 80 in a manner twistlocks sleeved onto the socket end 62; again, a one-way engaging chamber 65 of the rear end of the allowed access chemical flow passage 61 is formed, and in the way engaging the peripheral chamber 65 of the jacket 66 is provided with a sealing ring to prevent leakage of liquid from the contact surface 60 and the needle hub 50 of syringe barrel.

推杆70(请同时参阅图6、7所示),其前端具有一杆头71,推杆70与杆头71间以若干的连接点72予以连接在一起,并令推杆70与杆头71间形成一在使用后可予以折断破坏的折断槽73,杆头71上并套设有一止水环74,且杆头71前端设有一圆锥状的卡掣头75,又杆头71的上端周围设有若干单向卡掣片76。 The push rod 70 (see FIG. 6 and 7 simultaneously as shown), the front end having a head 71, the push rod 70 and the head 71 to a plurality of connection points 72 to be connected together, so that the push rod 70 in the head and 71 can be formed in a broken broken broken groove 73 after use, and the head cover 71 is provided with a sealing ring 74, and the distal head 71 is provided with a conical engaging head 75, and the upper end of the head 71 surrounded by a plurality of one-way engaging piece 76.

通过上述的构造,该针头座60与推杆70的杆头71各可依序从注射筒50后端越过凸唇53而塞置于注射筒50内,且针头座60的凸唇631可进一步越过注射筒50前端所设的圆弧形凸唇52,而卡落于止挡壁51与凸唇52间所形成的凹槽53内,进而令针头座60塞置于注射筒50的前端,并令针头座60前端的套管61凸露于注射筒50前端,以供注射针头80的旋锁套接(如图7所示);而当推杆70向前推送至最前端时,杆头71前端所设的卡掣头75可被压迫塞入针头座60后端所设的单向卡掣室65内(如图8所示);接着,可将推杆70往后退拉,而可同时将针头座60往后退拉,令注射针头80得以被收藏于注射筒50内(如图9所示);当将注射针头80退缩收藏于注射筒50内后,可将推杆70与杆头71依折断槽73予以折断(如图10所示),令注射针筒在使用后无法再重覆使用,进而达到安全使用的目的。 Through the above configuration, the needle hub 60 and the head 70 of the plunger 71 may each be sequentially across the lip 50 from the rear end of the plug disposed within the syringe barrel 53 and syringe 50, needle hub 60 and the lip 631 may further syringe over the arcuate lip 50 of the front end of the set 52, and the card falls within the stopper wall 5351 is formed with a groove lip 52, so that the needle hub 60 and thus the plug 50 to the front of the syringe barrel, and so that the distal end 60 of needle cannula 61 projecting seat 50 exposed to the front end of the syringe, an injection needle for twistlocks socket 80 (FIG. 7); and when the push rod 70 pushed forward to the foremost end of the rod head 71 established by engaging the front end of head 75 may be inserted into the compression (FIG. 8) engaging the one-way rear chamber 60 of the needle seat 65 of the set; then, the push rod 70 can be pulled to the back, and the needle hub 60 can be simultaneously pulled to the back, so that needle 80 is to be concealed inside the syringe 50 (FIG. 9); when the needle 80 back in the collection syringe 50, plunger 70 can be the head 71 to be broken by breaking groove 73 (FIG. 10), so that the syringe can not be re-used after repeated use, thus achieve the purpose of safe use.

以上所述的构造基本上与前揭现有注射针筒大同小异,且并非本实用新型的设计重点所在;本实用新型为达到目的所运用的技术手段及其构造特征乃在于:该针头座60后端所设的单向卡掣室64的外环壁设有若干轴向剖缝67,令单向卡掣端室65的外环壁具有向外张的弹性,并于单向卡掣端室65的内壁面设有准入不准出的单向卡掣凸唇68(请参阅图7所示);同时,于推杆70的杆头71前端所设的卡掣头75上亦设有一单向卡掣凸唇77,该单向卡掣凸唇77亦设有若干的剖缝78,令单向卡掣凸唇77具有适当的弹性;于是,通过单向卡掣室64外环壁所设的若干轴向剖缝67,与单向卡掣凸唇77上所设的若干剖缝78,令推杆70向前推送至最前端时(请参阅图8、11、12所示),杆头71前端所设的卡掣头75可轻易地被压迫塞入针头座60后端所设的单向卡掣室65内。 The above construction is substantially similar to the above-mentioned technical conventional syringe, according to the present invention and are not the focus of the design; the present invention achieve technical means is characterized in its structure that is the object by the use of: the needle hub 60 after unidirectional engaging the outer chamber end wall 64 is provided with a plurality of axial slits 67 cross sectional, so that the one-way engaging end chamber outer wall 65 having an elastic sheet outwardly and engaging an end chamber in the way the inner wall surface 65 is provided with a one-way access allowed to the hooking lip 68 (see FIG. 7); at the same time, the push rod head 71 provided in the front end 70 engaging the head 75 is also provided with a unidirectional hooking lip 77, the lip 77 engaging way is also provided with a plurality of cross-sectional slits 78, so that a unidirectional hooking lip 77 having appropriate elasticity; thus, the one-way engaging outer wall of the chamber 64 when a plurality of axial slits 67 are provided in a cross-sectional, with a number of one-way lip engaging section 77 provided on the slit 78, so that the push rod 70 is pushed forward to the foremost end (see FIG. 11, and 12 below) , the front end of the head 71 established by the engaging head 75 can easily be inserted into the one-way compression chamber engaging the rear end of the needle 60 within the seat 65 are provided. 再者,于推杆70的杆头71前端所设的卡掣头75向前延伸有一轴向柱条79(请参阅图6所示),当推杆70向前推送至最前端时,通过该轴向柱条79可伸入针头座70的药液流道61内(请参阅图8所示),而可将药液流道61内的药液推送出,进而可降低药液的残留量,以符合国际标准。 Further, the putter head 71 at the distal end 70 of the engaging head disposed forwardly extending bar 75 has an axial post 79 (see FIG. 6), the push rod 70 when pushed forward to the forefront, and the axial struts 79 of the needle hub can be inserted into the liquid medicine flow channel 70, 61 (see FIG. 8), but may be in the liquid flow path 61 push out the drug solution, and further reduces the residual liquid amount, in order to meet international standards.

从以上所述及附图所示的实施例中可知,本实用新型所运用的技术手段及其构造特征确可达到实用新型的目的,而相较于现有注射针筒确具有显著的实用性与进步性。 Seen from the embodiment illustrated in the drawings and described above, the technical means of the present invention by the use of its structural features can indeed achieve the purpose of disclosure, and indeed as compared to the conventional syringe having significant utility and progressive.

惟以上所述,仅为本实用新型的一可行实施例,并不能以之限定本实用新型实施的范围,举凡依本实用新型说明书及权利要求书所作的等效结构变化与修饰,皆应仍属本实用新型所涵盖的范围内。 However the above, the present invention is merely a possible embodiment, not to define the scope of the present invention embodiment, under this covered the modifications and equivalent structures of the invention made by the book specification and claims, all should remain genus within the scope of the present invention covered.

Claims (1)

  1. 1.一种注射针筒,由一注射筒、针头座及推杆等主要元件所构成;其中:注射筒,为一前后贯通的圆管体,其于接近前端的内侧壁面径向环设有一止挡壁,止挡壁的后方径向环设有一截面呈圆弧形的凸唇,并令止挡壁与凸唇间形成一径向环设的凹槽,再于注射筒的后端内侧壁面径向环设有一准入不准出的单向卡掣凸唇;针头座,其中央形成一前后贯通的药液流道,药液流道的前端形成一可供注射针头套接的套接端,套接端的外围环设有一围墙,围墙的外侧壁面径向环设有一凸唇,凸唇恰可对应于注射筒前端内侧壁面所径向环设的凹槽,又针头座的外侧壁面设有一径向环设的凹槽,该凹槽恰可对应于注射筒前端内侧壁面径向环设的圆弧形凸唇;再药液流道的后端形成一准入不准出的单向卡掣室,并于卡掣室的外围套设有一止水环;推杆,其前端具有 A syringe, the main element is composed of a syringe, needle hub and push rod; wherein: a syringe, the body is a pipe through the front and rear, which is close to the inner wall surface of the radial ring provided with a front end the stopper wall, the rear wall of the stopper ring provided with a radial cross-sectional circular arcuate lip, and so stopper wall is formed with a radially protruding lips disposed around the groove and then at the rear end of the inner syringe barrel a one-way radial wall ring engaging a lip of an access allowed; needle hub center thereof before and after a chemical flow passage therethrough, the distal end is formed a liquid flow channel for an injection needle sleeve telescoped mating end, a peripheral ring provided with a socket end wall, a radially outer wall of the ring wall is provided with a lip, the lip may correspond exactly to a front inner wall surface of the syringe set of radial ring groove, and the outer wall surface of the needle hub a ring provided with radially disposed grooves, the groove may just correspond to the front end of the syringe barrel arcuate lip disposed around the radially inner wall; the rear end of another chemical flow passage is formed out of a single access allowed engaging the chamber and the peripheral chamber is provided with a sleeve engaging a sealing ring; plunger, the tip having a 杆头,推杆与杆头间以若干的连接点予以连接在一起,并令推杆与杆头之间形成一在使用后可予以折断破坏的折断槽,杆头上套设有一止水环,且杆头前端设有一锥状的卡掣头;其特征在于:该针头座后端所设的单向卡掣室的外环壁设有若干轴向剖缝,并于单向卡掣端室的内壁面设有准入不准出的单向卡掣凸唇;同时,于推杆的杆头前端所设的卡掣头上亦设有一单向卡掣凸唇,该单向卡掣凸唇亦设有若干的剖缝,而通过单向卡掣室外环壁所设的若干轴向剖缝,与单向卡掣凸唇上所设的若干剖缝,令推杆向前推送至最前端时,杆头前端所设的卡掣头可轻易地被压迫塞入针头座后端所设的单向卡掣室内;该推杆的杆头前端所设的卡掣头向前延伸有一轴向柱条,当推杆向前推送至最前端时,通过该轴向柱条可伸入针头座的药液流道,而可将药液流道内的 Head, and the putter head between a plurality of points to be connected are joined together and form a break can be destroyed after use in order to break groove between the ram and the head, the sleeve is provided with a sealing ring on the head and a front end provided with a tapered head engaging head; wherein: the rear end of the needle hub is established by engaging the one-way outer chamber wall is provided with a plurality of axial cross-sectional slits, and one-way engaging end inner wall surface of the chamber is provided with a one-way access allowed to the hooking lips; while engaging the front end of the head to the head of the plunger has also established a one-way engaging lip, engaging the one-way lip also has a plurality of cross-sectional slits, and a plurality of axially engaging by way of the annular wall disposed outside the sectional joints, seams and a plurality of cross-sectional unidirectional hooking established by the lips, so that the pusher pushes forward Between the foremost end, the front end of the head established by engaging heads can easily be inserted into the one-way compression chamber engaging the rear end of the needle hub is established; the front end of the plunger head extends established by engaging the first forward It has an axial bins, when pushed forward to the foremost end of the push rod, through which the strip can be inserted into an axial column liquid flow path of the needle hub, but may be the liquid flow path 药液推送出,进而可降低药液的残留量。 Liquid pushed out, and thus can reduce the residual amount of liquid.
CN 03244070 2003-05-08 2003-05-08 Syringe reservoir CN2628071Y (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080132851A1 (en) * 2006-05-05 2008-06-05 Shaw Thomas J Syringe with Recessed Nose and Protective Guard for Use with Frontal Attachments
WO2013127038A1 (en) * 2012-02-29 2013-09-06 Wang Zuyang Needle base structure for use in safe self-destructing syringe
US8636688B2 (en) 2006-05-05 2014-01-28 Retractable Technologies, Inc. Universal syringe with retractable needle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080132851A1 (en) * 2006-05-05 2008-06-05 Shaw Thomas J Syringe with Recessed Nose and Protective Guard for Use with Frontal Attachments
US8636688B2 (en) 2006-05-05 2014-01-28 Retractable Technologies, Inc. Universal syringe with retractable needle
US9295790B2 (en) * 2006-05-05 2016-03-29 Retractable Technologies, Inc. Syringe with recessed nose and protective guard for use with frontal attachments
WO2013127038A1 (en) * 2012-02-29 2013-09-06 Wang Zuyang Needle base structure for use in safe self-destructing syringe

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