1238726 九、發明說明： 【發明所屬之技術領域】 ，特別是指一種可回抽 本發明是有關於一種引導裝置 並隱藏針體的靜脈注射導管引導裝置 【先前技術】 』i、圖2,如美國專利第5, 989,22〇號案所示* 靜脈注射器，主要包含有環繞一回復# U的-管體1〇。1238726 IX. Description of the invention: [Technical field to which the invention belongs], especially a retractable pump The invention relates to an intravenous catheter guiding device for guiding a device and hiding a needle body [prior art] "i, Figure 2, such as U.S. Patent No. 5,989,220 shows an intravenous syringe, which mainly includes a tube body 10 that surrounds a reply #U.
該回復件η具有固結-針體12且穿出該管體μ的—前对 部⑴，及嵌置在該管體10的一後端部112，該前端部u 與一管座13分別具有相對形成有摩擦阻力以克服該回復件 η彈張^及防止該管座13向後位移的一銜接面uia、⑶ 。-彈簧15是呈壓縮狀且抵靠在該管體ι〇 一前端壁⑻ 及該回復件U 一階緣113 ,卜使用時，該延伸穿經一可撓 f導管Η的針體12是插人病人血管内，以導引該導管^ 進入血管内輸送葯劑或輸液。The restoring member η has a consolidation-needle body 12 that penetrates the tube body μ—the front facing portion ⑴, and a rear end portion 112 embedded in the tube body 10, the front end portion u and a tube seat 13 respectively There is an engagement surface uia, ⑶ which is relatively formed with frictional resistance to overcome the elasticity of the restoring member n and prevent the tube 13 from being displaced backward. -The spring 15 is compressed and abuts against a front wall of the tube body and a first-order edge 113 of the restoring member U. When used, the needle body 12 extending through a flexible f catheter Η is inserted A human patient's blood vessel is used to guide the catheter ^ into the blood vessel for drug delivery or infusion.
當該管座13強迫由該回復件U前端部ill被分離，及 卸離該銜接面⑴a時，該回復件u會立刻受該彈簧15推 頂而自動地帶動該針體12回抽至該管體1〇内。但是，當 醫護人員用手施力操作該管座13卸離該回復件u與該針: 12的過程中易發生振動，*使針體12穿透血管的意外，並 使病人感覺疼痛，而在使用上有安全性的疑慮。 【發明内容】 & 因此，本發明之目的，即在提供一種能以單手簡易操 作且安全地回抽一針體的靜脈注射導管引導裝置。 5 1238726 凸栓是可卡©定位該針座後端部，且經由該前定位孔徑向穿 出該管筒大管徑段。該撥控件是配置在該管筒外且與該凸栓 連結’而可由該前定位孔被位移’使該針座可沿該轴線方向 位移至後方位置。該導管座具有可沿該軸線方向位移以知離 該針座前端部且界定出—輸送道的—環壁、反向於該環壁且 於是，本發明靜脈注射導管弓丨導裝置是包含—管筒、一 針體、一針座、一卸離件、一導管座及一導管。該管筒具有 沿:軸線方向相互對應的—前開放端與—後開放端，及連接 該别、後開放端的-管壁，該管壁具有沿該軸線方向相互對 應且分別鄰近該前、後開放端的一小管徑段與一大管徑段、 環繞該軸線且與該前、後開放端界定出_管道的—内表面， 及ΐ向於該内表面的-外表面。該針體具有終止於-前端的 剛段，及沿該軸線方向延伸且反向於該前端的一後端。該 針座具有沿該軸線方向延伸的—前端部與_後端部，該後端 部是容置在該管筒管道内，且可相料該管筒管壁沿該轴線 方向分別滑動至鄰近該前開放端與該後開放端，該前端部是 與該針體後端連接’當該針^是定位在該管筒前方位置時， 該針體前段是穿出該管筒前開放端且向前延伸，而處於使用 狀態，當該針座是定位在該管筒後方位置時，該針體是回抽 並隱藏在該管筒的管道内，而處於回收狀態，且該後端部是 圍繞該軸線且界定出與該針體導通的—容室。該卸離件是可 在該針座後端部位於前方位置時，相對該針座沿該轴線方向 並具有-别定位孔、一凸栓及一撥控件。該前定位孔 ，是相對於該管筒大管徑段且貫穿該管壁的内、外表面。該 1238726 沿軸線方向沿伸的一端部，及沿該軸線方向延伸且連通該輸 达道的一穿孔，使該針體前段由該穿孔穿出。該導管具有穿 置入該導管座穿孔内且沿該軸線方向延伸至與該輸送道連通 的一鄰接段，及由該鄰接段沿該軸線方向延伸且穿出該導管 座端部的一前端段，當該針體被安置在使用狀態時，該導管 是環覆該針體前段，及使該針體前端向前穿出該導管前端段 〇 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之六個較佳實施例的詳細說明中，將可 清楚的呈現。 發明描述之前，要注意的是，在以下的說 1内容土^.類似牛是以相同的編虢决矣 參圖3、圖4,本發明靜脈注射導管引導裝置的第一較 佳實施例包含一管筒2、一針座3、一針體5、及一導管組 件4 〇 該官筒2具有沿一軸線方向相互對應的一前開放端224 與一後開放端223，及連接該前、後開放端224、223的一 管壁22。该管壁22具有沿該轴線方向相互對應且分別鄰近 如、後開放端224、223的一小管徑段228與一大管徑段 229、環繞該軸線且與該前、後開放端224、223界定出一 管道21的一内表面221，及反向於該内表面221的一外表 面 222 〇 一卸離件包含有貫穿該管壁22内、外表面221、222 1238726 且相對忒大官徑段229沿軸線方向延伸的一導溝23，該導 溝23是起始於一前定位孔231與終止於一後定位孔232， 並具有分別鄰接該前、後定位孔231、232的二狹縮部24、 25 ° -亥針體5具有終止於—前端52的—前段$!，及沿該輛 線方向延伸且反向於該前端52的一後端53。 該針座3是由該管筒2後開放端223穿置入該管道21 内及以一端蓋26封閉該後開放端223，且可相對於該管 壁22沿該軸線方向在鄰近該前開放端224與後開放端223 間/月動β亥針座3具有與該針體5後端^固結的一前端部 多圖4 θ β亥針座3是定位在該管筒2前方位置時，該 針體5前段51是穿出該管筒2前開放端224且向前延伸， 而處於使用狀態。參圖5，當該針座3是定位在該管筒2後 方位置夺Θ針體5是回抽並隱藏在該管筒2的管道^内 ，而處於回收狀態。 ^ 又/、韦由該刚端部31沿該軸線方向延伸且容 置在:亥：筒2官道21内相對於大管徑段的一後端部η 後端α卩32疋圍繞該軸線且界定出與該針體$導通的一 奋;至y ^上的透氣件37是—種多孔隙材料，並卡合When the socket 13 is forced to be separated by the front end portion ill of the return piece U and detached from the engaging surface ⑴a, the return piece u will be immediately pushed by the spring 15 and automatically drive the needle body 12 back to the Inside the tube body 10. However, when the medical staff operates the tube holder 13 to detach the recovery piece u and the needle with force, the vibration is prone to occur during the process of *, the accident that makes the needle body 12 penetrate the blood vessel, and makes the patient feel pain, and There are concerns about safety in use. [Summary of the Invention] Therefore, an object of the present invention is to provide an intravenous catheter guiding device capable of easily retracting a needle body with a simple operation with one hand. 5 1238726 The convex pin is used to locate the rear end of the needle seat by Coca ©, and to pass through the large diameter section of the tube through the front positioning aperture. The dial control is disposed outside the tube and is connected to the convex bolt, and can be displaced by the front positioning hole, so that the needle seat can be displaced to a rear position along the axis direction. The catheter seat has a ring wall that is displaceable along the axis direction so as to be known from the front end of the needle seat and defines—the channel—opposite to the ring wall, and thus, the intravenous catheter arching device of the present invention includes— A tube, a needle body, a needle seat, a detachable piece, a catheter seat and a catheter. The tube has a front open end and a rear open end corresponding to each other along the axis direction, and a tube wall connecting the other and the rear open ends, and the tube walls have mutually corresponding along the axis direction and are adjacent to the front and rear respectively. A small pipe diameter section and a large pipe diameter section at the open end surround the axis and define the inner surface of the pipe with the front and rear open ends, and the outer surface facing the inner surface. The needle body has a rigid section terminating at a front end, and a rear end extending along the axis direction and opposite to the front end. The needle seat has a front end portion and a rear end portion extending along the axis direction. The rear end portion is accommodated in the tube pipe, and the tube wall can be slid along the axis direction to Adjacent to the front open end and the rear open end, the front end portion is connected to the rear end of the needle body. When the needle ^ is positioned in the front position of the tube, the front section of the needle body passes through the front open end of the tube. And it extends forward and is in use. When the needle seat is positioned behind the tube, the needle body is withdrawn and hidden in the tube of the tube, and it is in a recovered state, and the rear end portion It is around the axis and defines a chamber that communicates with the needle body. When the rear end of the needle base is located in a forward position, the detaching member can be located along the axis direction with respect to the needle base and has a positioning hole, a convex bolt and a dial control. The front positioning hole is opposite to the large diameter section of the tube and penetrates the inner and outer surfaces of the tube wall. One end of the 1238726 extending along the axis direction, and a perforation extending along the axis direction and communicating with the passageway, so that the front section of the needle body passes through the perforation. The catheter has an abutting section that is inserted into the perforation of the catheter seat and extends along the axis direction to communicate with the conveying path, and a front section that extends from the abutting section in the axis direction and penetrates the end of the catheter seat. When the needle body is placed in use, the catheter surrounds the front section of the needle body, and the front end of the needle body passes out of the front end section of the catheter. [Embodiment] The foregoing and other technical contents related to the present invention , Characteristics and effects, will be clearly presented in the following detailed description of six preferred embodiments with reference to the drawings. Before describing the invention, it should be noted that in the following, the content is as follows. Similar cows are described in the same way. Refer to FIGS. 3 and 4. The first preferred embodiment of the intravenous catheter guiding device of the present invention includes A tube 2, a needle seat 3, a needle body 5, and a catheter assembly 4 The tube 2 has a front open end 224 and a rear open end 223 corresponding to each other along an axis direction, and is connected to the front, A tube wall 22 at the rear open ends 224, 223. The pipe wall 22 has a small pipe diameter section 228 and a large pipe diameter section 229 that correspond to each other along the axis direction and are adjacent to the rear open ends 224 and 223, respectively, and surround the axis and the front and rear open ends 224. And 223 define an inner surface 221 of a pipe 21 and an outer surface 222 opposite to the inner surface 221. A detachment piece includes a relatively large size penetrating the inner and outer surfaces 221, 222 1238726 of the pipe wall 22. A guide groove 23 extending along the axial direction of the official diameter section 229. The guide groove 23 starts from a front positioning hole 231 and ends at a rear positioning hole 232, and has abutment on the front and rear positioning holes 231 and 232, respectively. The two narrowed portions 24, 25 °-the helical needle body 5 has a front section $! Terminating at the -front end 52, and a rear end 53 extending along the line of the vehicle and opposite to the front end 52. The needle seat 3 is inserted into the pipe 21 by the rear open end 223 of the tube 2 and the rear open end 223 is closed by an end cap 26, and can be opened adjacent to the front along the axis direction relative to the tube wall 22. Between the end 224 and the rear open end 223 / monthly moving β helical needle holder 3 has a front end which is consolidated with the rear end of the needle body 5 FIG. 4 θ β helical needle holder 3 is positioned in front of the tube 2 The front section 51 of the needle body 5 passes through the front open end 224 of the tube 2 and extends forward, and is in a use state. Referring to FIG. 5, when the needle seat 3 is positioned behind the tube 2, the needle body 5 is withdrawn and hidden in the pipe ^ of the tube 2 and is in a recovered state. ^ And /, Wei extends from the rigid end portion 31 along the axis direction and is accommodated in: Hai: a rear end portion of the tube 2 official channel 21 with respect to the large diameter section η rear end α 卩 32 疋 surrounds the axis And define a struggle with the needle body $; the breather 37 to y ^ is a kind of porous material, and engage
在該後端部32以封閉該灾玄q A 、、 了闭这谷至36，可供空氣流通及抑制血液 流通的速度。另外，該針座 具有連接該前端部31與該後 鈿邓32的一顯血視窗38 〜 °亥顯血視窗38是連通該針體5 與该谷至36,及可觀察血液流通的情形。 該卸離件具有可被操控 由该後端部32徑向穿出該管 1238726 筒外表面222的-凸检33。當該針座^由該管筒2前方 位置向後方位置滑移時，該凸栓33是可滑動地沿該導溝23 從該前定位孔231滑移至後定位孔加，藉此，該位於大管 徑段229與該後端冑32間的凸栓33,是可與該前定位孔 231或後定位孔232卡合定位。 田該針座3相對於该官筒2沿該軸線方向位移，至分 別鄰近前方位置或後方位置時，該針座3的凸柱Μ是受制 於一中狹縮^ 24、25，此時，只要強迫該凸检33通過該 狹縮部24、或狹縮部25，該凸栓33就可以喪卡入該對應 的前定位孔231、或後定位孔232，藉以將該針座3定位在 前方位置或後方位置。 孩大官徑段229更具有由該後定位孔232延伸至該後 開放端223且連通該導溝23的一隙溝27，使該凸栓33可 由該隙溝27強迫通過後方的狹縮部25，及順暢地滑行於該 導溝23内。且該端蓋26是封閉該後開放端223與該隙溝 27 了以疋位鑌後開放端223，使該大管徑段229維持原狀 且不變形。 一撥控件34是形成在該凸栓33可被觸摸撥動的一端， 且服貼滑移於該管筒2外表面222，藉此，該凸栓33可由 該前定位孔231被卸離，使該針座3依該導溝23沿該軸 線方向位移至後方位置。 一導管組件4具有一導管座41、一導管43,及一針套 該導管座41具有沿該軸線方向延伸且界定出的一輸送 45 ° 1238726 道412的一環壁411，及相對該環壁411沿該軸線方向延伸 且界定出一穿孔414的一端部413。該環壁411是與該管筒 2小官徑段228套接，使該針體5前段51由該穿孔414穿 出。 該導官43具有穿置入該穿孔414内且沿該軸線方向延 伸至與該輪送道412連通的一鄰接段431，及由該鄰接段. 43i沿該軸線方向延伸且穿出該導管座41端部413的一前- 知·^又432，虽該針體5被安置在使用狀態時，該導管是 環覆該針體5前段51 ’使該針體5前端52向前穿出該導管# 43前端段432。 - 便用時，先卸除該針套 —一丨肌以圳哪牙The rear end portion 32 closes the valley qA to 36 to allow air circulation and suppress the speed of blood circulation. In addition, the needle holder has a blood-showing window 38 to the front end portion 31 and the rear Deng 32. The blood-seeing window 38 connects the needle body 5 to the valleys 36, and the blood circulation can be observed. The release piece has a convex protrusion 33 that can be manipulated to radially exit the tube 1238726 barrel outer surface 222 from the rear end portion 32. When the needle seat ^ slides from the front position to the rear position of the tube 2, the convex bolt 33 is slidably slid along the guide groove 23 from the front positioning hole 231 to the rear positioning hole plus, thereby, the The convex bolt 33 located between the large-diameter section 229 and the rear end 胄 32 can be engaged and positioned with the front positioning hole 231 or the rear positioning hole 232. When the needle seat 3 is displaced relative to the official cylinder 2 along the axis direction, and when it is adjacent to the front position or the rear position, respectively, the convex column M of the needle seat 3 is subject to a narrowing of 24, 25. At this time, As long as the convex inspection 33 is forced to pass through the narrowed portion 24 or the narrowed portion 25, the convex bolt 33 can be locked into the corresponding front positioning hole 231 or the rear positioning hole 232, thereby positioning the needle seat 3 at Forward or rear position. The kid's official section 229 further has a gap groove 27 extending from the rear positioning hole 232 to the rear open end 223 and communicating with the guide groove 23, so that the convex bolt 33 can be forced to pass through the narrow portion of the rear by the gap groove 27. 25, and smoothly slide in the guide groove 23. In addition, the end cap 26 closes the rear open end 223 and the gap groove 27 and positions the rear open end 223 in a position to keep the large pipe diameter section 229 intact and not deformed. A dial control 34 is formed on an end of the protruding plug 33 that can be touched and moved, and slides on the outer surface 222 of the tube 2, whereby the protruding plug 33 can be detached from the front positioning hole 231. The needle seat 3 is displaced to a rear position along the axis direction according to the guide groove 23. A catheter assembly 4 has a catheter seat 41, a catheter 43, and a needle cover. The catheter seat 41 has an annular wall 411 extending along the axis and defined by a transport 45 ° 1238726 channel 412, and is opposite to the annular wall 411. An end portion 413 of the perforation 414 extends along the axis and defines a perforation 414. The annular wall 411 is sleeved with the small official diameter section 228 of the tube 2, so that the front section 51 of the needle body 5 is penetrated by the perforation 414. The guide 43 has an abutting section 431 inserted into the perforation 414 and extending along the axis direction to communicate with the runner 412, and 43 a extends along the axis direction and passes out of the catheter seat. 41 front part 413 of a front-know ^ and 432, although the needle body 5 is placed in the use state, the catheter is looped around the front section 51 of the needle body 5 'to make the front end 52 of the needle body 5 forward out of the Catheter # 43 前段 段 432. -When using it, remove the needle sleeve first.
入患者的靜脈血管，並導引該導管43進入靜脈血管内。 寺机動至該針座3容室36内的血液可顯視於該顯也視 38,供醫護人員確認該針體5是否適當的穿刺入靜脈血 内參圖5,然後，醫護人員可以—手麼追該靜脈血管同 固持該導管座41，另一手握持該管筒2的管壁Μ，並施 將該管筒2卸離該導管座41。同時，以握持該管壁。的 手指撥動該撥控件34，使該凸栓33帶動該針座3沿該導 位移至後方位置，並由該前開放端將該針體$前， 51回抽至隱藏在該管筒2 0，而位於回收狀態的位置， f使用安全性的要求，接著，將點滴輸液管線套接在， 官座41，進行點滴輸液治療，也可於套接輸液管線前，土 以抽血筒套接該導管座4卜抽取血液供臨床㈣。^ 由於使用時，醫護人員可以用一隻手握持該管筒Η 10 1238726 以手指操作該撥控件34，#兮 杨罢“ 針座3帶動該針體5向後方 置移動至隱藏在該管筒2營谨？1 ^ 2自道21内。所以，醫護人員能 早手彳呆作的方式，達到該針體5 離病人血官後立即隔 m 藏该針體5的目的，条哈强从土 5 & 。 W的免除知作者受傷、感染的危險 參圖6、圖7,是本發明第二較佳實施例，其與第一較 佳貫施例大致相同，不同處在於： ^ h筒2更具有形成在該内表面221 ^鄰近該大管徑 段22^與該小管徑段228的數肋片⑵。該針座3更具有: 成在該後端部32且面向該肋片227以界定出—彈性元件容 ，空間的-環緣323。且該凸栓33是由該後端部32鄰近該 %緣323的位置徑向穿出該管筒2。 其該卸離件前定位孔231是由該導溝23 一前端23u沿該 官壁22側向延伸形成位部㈣，且該狹縮部μ是形 成在該導溝23前端231a與該定位部231b間。使該凸栓33 卡抵在該定位部231b，將該針座3定位在該管筒2前方位 置11亥彈簧7疋呈壓狀態設置在前述容置空間，並具有 分別抵靠該肋片227與該環緣323的二頂端，使該針體$ 能藉由彈性回復力，在該撥控件34帶動該凸栓33脫離該 定位部231b時，由該前端231 a沿該導溝23位移至隱藏在 該管筒2管道21内。 〜 參圖8、圖9,是本發明第三較佳實施例，其與第一較 佳實施例大致相同，不同處在於： 該卸離件更具有形成在該大管徑段229上的二前定位 1238726 孔2ji ’且該撥控件是以槓桿原理動作的二卡扣ό，每一個 卡才6疋以支點63樞設在該管筒2外表面222，並具有 形成&栓33的-迫壓端6卜及相對該支點63反向於該 迫壓端61的一驅動端62,使該凸栓33可沿徑向脫離該管 筒2的管道21，並釋放該針座3。 4彈f生元件疋-彈簧7且設置在前述容置空間，並且 =分別抵靠該肋片227與該環緣323的二頂端。當該針座、3 是位於前方位置時，該彈簧7是呈壓縮狀態，且蓄積有一 彈性回设力’當醫護人員同時以手指觸壓該驅動端α，使 該等凸检33沿徑向順暢地脫離該管筒2管道21時，該針 座3會受彈性回復力向後推移，並帶動該針體5隱藏至回 收狀態的位置。藉此’能防止該針體5在回收的過程中有 震動的情形，以幫助減輕患者的痛感。 值得一提的是，本實施例雖然包含二卡扣6，惟，單一 卡扣6同樣也能達到前述定位及釋放該針座3的功能。 參圖10、圖11，是本發明第四較佳實施例，其與第二 較佳實施例大致相同，不同處在於： 該針座3後端部32與該管筒2相對於該大管徑段229 的内表面221分別形成有沿徑向延伸的—環緣％，及沿轴 線方向延伸的一後環緣220，該環緣39、後環緣220是與 該後端部32界定出一容納空間。 一彈黃7是容置在前述容納空間，並具有分別與該環 緣39及該後環緣220卡固的一前端與—後端。藉此，當該 針座3位於前方位置時，該彈簧7是被該針座3拉張，使 12 1238726 孩針體5在使用完成後能藉由彈性回復力，在該撥控件f ▼動忒凸栓33脫離該定位部23lb時，由前端23 1 a沿該導， 溝23位移。 參圖12,是本發明第五較佳實施例，其與前述各較佳 實施例大致相同，不同處在於·· 該管筒2小管徑段228形成有一擴大的前開放端224 · ，且該針座3前端部31與後端部32是呈可卸離狀態。特 · 別的是，該針座3更具有由該後端部32沿該軸線方向向前 延伸且界定出一軸向通道351以與該容室36連通的一連接 籲 部35，及由該可卸離的前端部31沿該轴線方向向後延伸且 形成一套合件44的一套合部30。該套合部3()是由該管筒 2的刖開放端224沿該軸線方向與該連接部35套合，供該 針體5與容室36相互連通。藉此，該導管組件4與該套合 件44組合時，可以配合該針體5形成一種可拆卸的機能性 單元40，以配合臨床上使用不同管徑的導管。 參圖13,是本發明第六較佳實施例，其與第四、第五 較佳實施例大致相同，不同處在於： _ 該針座3後端部32與該端蓋26更具有分別環繞該軸 線且相互面對的一内環肋324、261。 该彈簧7更具有固定在該針座3後端部3内環肋324 的前端，及固定在該端蓋26内環肋261的一後端。藉此， 當該針座3位於前方位置時，該彈簧7是被該針座3拉張 ，使該針體5在使用完成後能藉由彈性回復力，隱藏至回 收狀態。 13 1238726 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 粑圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 ^Into the patient's venous blood vessel, and guide the catheter 43 into the venous blood vessel. The blood from the temple to the container 36 of the needle seat 3 can be displayed on the display 38, for medical personnel to confirm whether the needle body 5 is properly punctured into the venous blood. See Figure 5, and then the medical staff can-hand The chase is the same as holding the catheter holder 41, holding the tube wall M of the tube 2 with the other hand, and removing the tube 2 from the catheter holder 41. At the same time, hold the tube wall. The finger pushes the dial control 34, so that the convex bolt 33 drives the needle seat 3 to the rear position along the guide, and draws the needle body forward from the front open end 51 times to hide in the tube 2 0, and it is located in the recovered state, f uses the safety requirements, and then, the drip infusion line is sleeved on the seat 41 for drip infusion treatment, or before the sleeve is connected with the blood draw tube. After receiving the catheter seat, blood is drawn for clinical use. ^ When in use, the medical staff can hold the tube with one hand 12 10 1238726 Use the finger to operate the dial control 34, # rest, the needle seat 3 drives the needle body 5 to move backward to hide in the tube Can 2 battalion? 1 ^ 2 from within 21. Therefore, the medical staff can stun their hands early to achieve the purpose of hiding the needle body 5 immediately after leaving the patient's blood, m and strong Knowing the dangers of injury and infection of the author from the exemption of soil 5 & W refer to FIG. 6 and FIG. 7, which is the second preferred embodiment of the present invention, which is substantially the same as the first preferred embodiment, except that: ^ The h cylinder 2 further has a plurality of ribs 形成 formed on the inner surface 221 ^ adjacent to the large-diameter section 22 ^ and the small-diameter section 228. The needle hub 3 further has: formed on the rear end portion 32 and facing the The ribs 227 define an elastic element, a space, and a ring rim 323. The protruding pin 33 passes through the tube 2 radially from the rear end portion 32 adjacent to the% rim 323. The detachment The front positioning hole 231 is formed by a front end 23u of the guide groove 23 laterally extending along the official wall 22 to form a position part ㈣, and the narrowed portion μ is formed at the front end 231a of the guide groove 23 and the Between the position portion 231b, the convex plug 33 is clamped against the positioning portion 231b, and the needle seat 3 is positioned at a position in front of the tube 2 and the spring 7 is set in the aforementioned accommodating space in a compressed state, and has respective abutment By the two ends of the rib 227 and the ring 323, the needle body $ can be restored by the elastic force, and when the dial control 34 drives the protruding bolt 33 out of the positioning portion 231b, the front end 231a follows the The guide groove 23 is displaced to be hidden in the pipe 21 of the tube 2. ~ Figures 8 and 9 show the third preferred embodiment of the present invention, which is substantially the same as the first preferred embodiment, except that: The release piece also has two front positioning 1238726 holes 2ji 'formed on the large pipe diameter section 229, and the dial control is a two-clip buckle that operates on the principle of leverage. Each card is pivoted on the tube with a fulcrum 63. The outer surface 222 of the cylinder 2 has a pressing end 6 forming an & bolt 33 and a driving end 62 opposite to the fulcrum 63 opposite to the pressing end 61, so that the convex bolt 33 can be separated from the radial direction. The tube 21 of the tube 2 releases the needle base 3. The spring element 疋 -spring 7 is ejected and is set in the aforementioned accommodation space, and = abuts against the ribs, respectively. 227 and the two top ends of the ring 323. When the needle seat 3 is in the forward position, the spring 7 is in a compressed state, and an elastic resetting force is accumulated. When the medical staff touches the driving end with fingers at the same time α When the convex inspection 33 is smoothly separated from the tube 21 of the tube 2 in the radial direction, the needle seat 3 will be moved backward by the elastic restoring force, and the needle body 5 will be hidden to the recovered state. To prevent the needle body 5 from vibrating during the recovery process, to help reduce the patient's pain. It is worth mentioning that although this embodiment includes two snaps 6, the single snap 6 can also achieve the aforementioned positioning. And release the function of the needle holder 3. Referring to FIG. 10 and FIG. 11, a fourth preferred embodiment of the present invention is substantially the same as the second preferred embodiment, except that the rear end portion 32 of the needle holder 3 and the tube 2 are opposite to the large tube. The inner surface 221 of the diameter segment 229 is respectively formed with a ring edge% extending in the radial direction and a rear ring edge 220 extending in the axial direction. The ring edge 39 and the rear ring edge 220 are defined by the rear end portion 32. Make an accommodation space. A spring yellow 7 is accommodated in the aforementioned accommodating space, and has a front end and a rear end which are respectively fixed to the ring edge 39 and the rear ring edge 220. Therefore, when the needle base 3 is located in the front position, the spring 7 is stretched by the needle base 3, so that the 12 1238726 child needle body 5 can be restored by the elastic restoring force after the use of the dial control f ▼ When the prong bolt 33 is disengaged from the positioning portion 23lb, the front end 23 1 a moves along the guide and the groove 23 is displaced. Referring to FIG. 12, it is a fifth preferred embodiment of the present invention, which is substantially the same as the previous preferred embodiments, except that the small diameter section 228 of the tube 2 forms an enlarged front open end 224, and The front end portion 31 and the rear end portion 32 of the needle hub 3 are detachable. In particular, the needle base 3 further includes a connecting portion 35 extending forward from the rear end portion 32 in the axial direction and defining an axial channel 351 to communicate with the receptacle 36, and The detachable front end portion 31 extends rearward along the axis direction and forms a set portion 30 of a set member 44. The engaging portion 3 () is engaged by the open end 224 of the tube 2 with the connecting portion 35 along the axis direction, so that the needle body 5 and the container 36 communicate with each other. Thereby, when the catheter assembly 4 is combined with the sleeve 44, it can cooperate with the needle body 5 to form a detachable functional unit 40 to cooperate with clinically used catheters with different tube diameters. 13 is a sixth preferred embodiment of the present invention, which is substantially the same as the fourth and fifth preferred embodiments, with the following differences: _ The rear end portion 32 of the needle holder 3 and the end cover 26 are respectively surrounded by An inner ring rib 324, 261 facing the axis and facing each other. The spring 7 further has a front end fixed to the inner ring rib 324 of the rear end portion 3 of the needle base 3 and a rear end fixed to the inner ring rib 261 of the end cap 26. Thereby, when the needle base 3 is located at the front position, the spring 7 is stretched by the needle base 3, so that the needle body 5 can be hidden to the retracted state by the elastic restoring force after the use is completed. 13 1238726 However, the above are only the preferred embodiments of the present invention. When the scope of the present invention cannot be limited by this, that is, the simple equivalent changes made according to the patent application scope and the description of the invention And modifications are still within the scope of the invention patent. ^
14 Ϊ238726 【圖式簡單說明】 圖1是一剖視圖，說明一般靜脈注射器的使用狀態； 圖2是一剖視圖，說明一般靜脈注射器回抽一針體； 圖3是一分解圖，說明本發明一靜脈注射導管引導裝 置的第一較佳實施例； •圖4是一剖視圖，說明該第一較佳實施例的使用狀態 •圖5是一剖視圖，說明該第一較佳實施例回抽一針體 圖6是一剖視圖 置的第二較佳實施例； 圖7是一剖視圖 ， 圖8是一剖視圖 置的第三較佳實施例； 圖9是一側視圖 y 圖10是一剖視圖 置的第四較佳實施例； 圖11是一剖視圖 說明本發明一靜脈注射導管引導 5兒明该第二較佳實施例回抽一 裝 針體 說明本發明一靜脈注射導管引導 裝 說明該第三較佳實施例回抽一針體 說明本發明一靜脈注射導管引導裝 說明該第四較佳實施例回抽一 針體 靜脈注射導管引導裝 靜脈注射導管引導裝 圖12是一分解圖，說明本發明一 置的第五較佳實施例；及 圖丨3是一剖視圖，說明本發明一 15 1238726 置的第六較佳實施例。 16 1238726 【主要元件符號說明】 2 .........管筒 31……前端部 21……管道 32……後端部 22……管壁 323……環緣 220……後環緣 324……內環肋 221……内表面 33……凸栓 222……外表面 34……撥控件 223……後開放端 35……連接部 224……前開放端 351……通道 227……肋片 36……容室 228……小管徑段 37……透氣件 229……大管徑段 38……顯血視窗 23……導溝 39……環緣 231……前定位孔 40……機能性單元 23 la…前端 4.........導管組件 231b…定位部 41 ......導管座 232……後定位孔 411……環壁 24……狹縮部 412……輸送道 25……狹縮部 413……端部 26……端蓋 414……穿孔 261......内環肋 43 ......導管 27……隙溝 431……鄰接段 3 .........針座 432……前端段 30……套合部 44……套合件 17 1238726 45… …針套 6…… …卡扣 5…… …針體 61… …迫壓端 51… …前段 62… …驅動端 52… …前端 63… …支點 53… …後端 7…… …彈簧 1814 Ϊ238726 [Brief Description of the Drawings] Figure 1 is a cross-sectional view illustrating the use of a general intravenous syringe; Figure 2 is a cross-sectional view illustrating a general intravenous syringe withdrawing a needle body; Figure 3 is an exploded view illustrating a vein of the present invention First preferred embodiment of the injection catheter guide device; Figure 4 is a cross-sectional view illustrating the use state of the first preferred embodiment; Figure 5 is a cross-sectional view illustrating the first preferred embodiment withdrawing a needle body Figure 6 is a second preferred embodiment in a sectional view; Figure 7 is a sectional view; Figure 8 is a third preferred embodiment in a sectional view; Figure 9 is a side view; and Figure 10 is a fourth embodiment in a sectional view. 11 is a cross-sectional view illustrating an intravenous catheter guide according to the present invention. The second preferred embodiment of the present invention withdraws a needle and illustrates a third preferred implementation of an intravenous catheter guide according to the present invention. Example Withdrawing a Needle Body Description An Intravenous Catheter Guide Device of the Present Invention This Fourth Preferred Embodiment Withdrawing a Needle Body Intravenous Catheter Guide Device Intravenous Catheter Guide Device FIG. 12 is an exploded view, saying Fifth preferred embodiment of the present invention, a set of; Shu and FIG. 3 is a cross-sectional view illustrating a sixth preferred embodiment of the present invention, a set of 151,238,726. 16 1238726 [Description of main component symbols] 2 ......... tube 31 ... front end 21 ... pipe 32 ... rear end 22 ... pipe wall 323 ... circle edge 220 ... rear ring Edge 324 ... inner ring rib 221 ... inner surface 33 ... convex bolt 222 ... outer surface 34 ... dial control 223 ... rear open end 35 ... connecting portion 224 ... front open end 351 ... channel 227 ... ... ribs 36 ... compartment chamber 228 ... small tube diameter section 37 ... breathing member 229 ... large tube diameter section 38 ... blood display window 23 ... guide groove 39 ... ring edge 231 ... front positioning hole 40 ...... Functional unit 23 la ... Front end 4 ...... Catheter assembly 231b ... Positioning part 41 ... Catheter base 232 ... Rear positioning hole 411 ... Ring wall 24 ... Narrowing Portion 412 ... Conveyor 25 ... Narrowed portion 413 ... End portion 26 ... End cap 414 ... Perforation 261 ... Inner ring rib 43 ... Guide 27 ... Gap 431 ... adjacent section 3 ......... needle seat 432 ... front end section 30 ... sleeve section 44 ... sleeve piece 17 1238726 45 ... sleeve cover 6 ...... clamp 5 ... Needle body 61 ... Pressing end 51 ... Front section 62 ... Driving end 52 ... … Front end 63… fulcrum 53… rear end 7…… spring 18