M262194 四、創作說明（1) 丨 【新型所屬之技術領域】 本創作係關於一種注射筒之注射針回縮結構，尤其是 指可以在該注射針筒内部容置液體，並於該注射筒完全注 射完畢該容置液體後，可以利用該注射針筒之内桿將注射 針回縮到該外筒之腔内，而達到安全收納的目的者。M262194 IV. Creation Instructions (1) 丨 [New Technology Field] This creation is about the needle retracting structure of a syringe, especially it can contain liquid inside the syringe, and it is completely in the syringe. After the accommodating liquid is injected, the inner rod of the injection syringe can be used to retract the injection needle into the cavity of the outer cylinder, so as to achieve the purpose of safe storage.
：.,；；.I | , 【先前技術】 一般注射筒的組成i包括一中空構造的外筒，以及一組 配在該外筒内的内桿。鮮中該外筒的一端可與注射針結 合，而該内桿的一端露ΐ該外筒。如此一來，當推動該内 桿，便可以使容置在外筒内腔的液體（例如藥劑），由注 射針輸出。 由於一般的注射針筒並無收納該注射針的功能，所以 必須將針蓋套回該注射針，再將該注射針取出。由於必須 進行注射針與針蓋的套合動作，所以容易因為操作不慎而 產生針刺危害的情形。 為了解決注射針頭使用後的廢置問題，美國第 5，0 1 9，0 4 4號專利提供一種安全針筒的設計。該專利案具 有二個重要的特徵設計，其一特徵設計是在外筒（b a r r e 1 ) 内鎖設一個钳制裝置（clamping means)，該钳置裝置具有 钳制元件（c 1 a m p i n g e 1 e m e n t )可以钳制一連接座，且在該 連接座與該鉗制裝置間配置有一彈簧，並使該彈簧的二端 分別抵止在該連接座端面與該钳制元件端面。而另一特徵 設計是在中空的内桿端面設有一橡皮塞（rubber plug)，:., ;;. I |, [Prior art] The composition i of a general injection cylinder includes a hollow outer cylinder and a set of inner rods arranged in the outer cylinder. One end of the outer cylinder may be combined with an injection needle, and one end of the inner rod may expose the outer cylinder. In this way, when the inner rod is pushed, the liquid (such as a medicine) contained in the inner cavity of the outer cylinder can be output by the injection needle. Since the general syringe does not have the function of accommodating the needle, the needle cap must be put back on the needle, and then the needle must be taken out. Since it is necessary to fit the injection needle with the needle cap, it is easy to cause needle stick hazards due to careless operation. In order to solve the problem of disposing of the injection needle after use, the US Patent No. 5,019,044 provides a design of a safety syringe. The patent has two important characteristic designs. One of the characteristic designs is to lock a clamping means in the outer barrel (barre 1). The clamping device has a clamping element (c 1 ampinge 1 ement) which can clamp one A connection seat, and a spring is arranged between the connection seat and the clamping device, and two ends of the spring are respectively abutted on the end surface of the connection seat and the end surface of the clamping element. Another characteristic design is to provide a rubber plug on the end face of the hollow inner rod.
第6頁 M262194 四、創作說明（2) 該橡皮塞對應著該連接座。 當使用者將該内桿舞向該連接座，則該連接座與該橡 皮塞會互相受力位移，此時彈簧因受力壓縮而產生回復 力。當内桿的端面推開讀钳制元件後，該連接座會失去該 鉗制元件的限制，配合釋簧的回復力作用，該連接座及注 射針頭的組合會推開該#皮塞而落到該中空的内桿内部。 又美國第6，0 6 6 1 1 5巍專利案揭露一種安全針筒，其在 •外筒的一端組配一連接座’且該針座（needle set)的底 部設有具倒勾構造的彈^片|。而一内桿的一端設有一凸柱 且該凸柱的端部形成有雜狀的頭部。當該内桿推向該連接 座，可以使該錐狀的頭部進入該連接座的底部且與該彈性丨_ 片形成卡勾狀，如此再將該内桿拉出該外筒，便可以將該 速接座及針頭一併拉向該外筒内腔。 另外美國第6，7 1 2，7 8 8 B 2號專利係揭露二個特徵設 計，其一係一針座穿置在一載體（supporting body)中， 且該針座的一端形成有長的舌部（tongue)與短的舌部，而 另一特徵設計係該内桿的端面設一開口座（〇 P e η cylindrical seat)。上述的短舌部係用來與該載體結 合，而長舌部則是在該内桿推向該針座時進入該開口座 内，與該開口座内部的凸稜（ridge)勾合。如此將該内桿 拉出該外筒，則該針座及針頭便會一併被拉進該外筒内 腔。 台灣第5 9 0 0 1 7號專利描述一種安全針筒，其在一針座 前端設有倒勾狀的卡制部，而針座後端設有複數片狀的結Page 6 M262194 IV. Creation Instructions (2) The rubber plug corresponds to the connector. When the user dances the inner rod toward the connecting seat, the connecting seat and the rubber plug will be displaced by force, and the spring will be restored by the compression force. When the end surface of the inner rod is pushed away from the clamping element, the connection seat will lose the restriction of the clamping element. With the restoring force of the release spring, the combination of the connection seat and the injection needle will push away the # leather plug and fall to the Hollow inner rod inside. Another U.S. patent No. 6,0 6 6 1 1 5 discloses a safety syringe, which is provided with a connecting seat at one end of the outer cylinder and the bottom of the needle set is provided with a barb structure. ^ 片 |. A convex post is provided at one end of the inner rod, and a heterogeneous head is formed at the end of the convex post. When the inner rod is pushed toward the connecting seat, the tapered head can enter the bottom of the connecting seat and form a hook shape with the elastic sheet, so that the inner rod can be pulled out of the outer cylinder, and then Pull the quick connector and the needle together toward the inner cavity of the outer cylinder. In addition, U.S. Patent No. 6,7 1 2,7 8 8 B 2 discloses two characteristic designs, one of which is a needle holder that is inserted into a supporting body, and one end of the needle holder is formed with a long Tongue and short tongue, and another characteristic design is that the end face of the inner rod is provided with an open seat (〇P e η cylindrical seat). The short tongue portion is used to be combined with the carrier, and the long tongue portion enters the opening seat when the inner rod is pushed to the needle seat, and engages with a ridge inside the opening seat. In this way, the inner rod is pulled out of the outer cylinder, and the needle seat and the needle are pulled into the inner cavity of the outer cylinder together. Taiwan Patent No. 5 9 0 0 17 describes a safety syringe which is provided with a barb-shaped locking portion at the front end of a needle seat, and a plurality of sheet-shaped knots at the rear end of the needle seat.
第7頁 M262194 圖式簡單說明 2 8 1連結片 2 8 2卡抵凸緣 2 8 4凸緣 30内桿 32活塞 3 4撥動環圈 3 5止歸圓柱 5 0注射針Page 7 M262194 Brief description of the drawing 2 8 1 Connecting piece 2 8 2 Snap to flange 2 8 4 Flange 30 Inner rod 32 Piston 3 4 Dial ring 3 5 Return cylinder 5 0 Injection needle
第15頁Page 15