1357464 九、發明說明： 【發明所屬之技術領域】 本發明係有關一種抽取裝置及方法，特別是關於一種 隔絕雜質的抽取裝置及方法。 【先前技術】 如圖1所示’習知的抽取裝置1〇〇包括一筒體11()， • 其包含一中空腔室150，一開口 140位於筒體no的前端 112與中空腔室150連通，一活塞12〇位於中空腔室150 中，以及一拉桿130連接至活塞12〇,使活塞12〇在中空 腔至I50中移動，當活塞120向筒體110的末端114移動 時，待抽取的物質經由開口 140被抽取至中空腔室15〇 中，當活塞120向筒體110的前端112移動時，中空腔室 150—中的被抽取物質經由開σ 14〇排出。然而，由於中空 腔，150在筒體11〇的末端114為開放式空間，因此中空 •腔室150的壁面會附著雜質，例如空氣，且當活塞120向 後移動時雜質會通過活塞12〇與中空腔室150之間的空隙 122進入位於活塞120之前的中空腔室150 +，因此在抽 122質時附著在中空腔室150壁面的雜質以及經由空隙 進入的雜質，使得被抽取至中空腔 物 導夂應用效果的劣化。例如，以抽取裝置1〇〇抽 化偏極化氦3(3He)時’由於氧氣的順磁性會造成超偏極 以及二的Ϊ偏極化，因此附著在中空腔室150璧面的氧氣 、、J由二隙122進入的氧氣，使得超偏極化3He的遲緩 5 1357464 時間几大幅減少，導致使用抽取裝置100抽取出的超偏極 化3He進行核磁顯影(MRI)時，不易獲得清晰的成像。 因此，一種隔絕雜質的抽取裝置及方法乃為所冀。 【發明内容】 本發明的目的之一，在於提出一種具有封閉空間的抽 取裝置。 本發明的目的之一，在於提出一種隔絕雜質的抽取裝 鲁置及方法。 本發明的目的之一，在於提出一種防止空氣滲透的抽 取裝置及方法。 本發明的目的之一，在於提出一種防止氧氣渗透的抽 取裝置及方法。 根據本發明，一種抽取裝置包括一筒體，其包含一中 空腔室，該中空腔室在該筒體的末端具有一第一開口，以 φ 及一第二開口位於該筒體的前端與該中空腔室連通，一活 塞位於該中空腔室中，其邊緣與該中空腔室的壁面接觸， 將該中空腔室分割成第一及第二區域，該第一區域介於該 活塞與該筒體前端之間，該第二區域介於該活塞與該第一 開口之間，一拉桿連接至該活塞，以移動該活塞，一緩衝 物供應單元提供一緩衝物至該第二區域，以阻絕雜質進入 該第一區域，以及一緩衝單元使該第二區域成為一封閉空 間並收集該緩衝物。當該活塞往該筒體的末端移動時，物 質經由該第二開口被抽取至該第一區域，該緩衝氣體排入 6 1357464 該緩衝單元。 在一實施例中，該緩衝單元包括一可拉伸壓縮容器， 其具有-第三開口與該筒體的末端密合，以及該拉桿與該 可拉伸壓縮容器内的底部接合。 在另一實施例中，該緩衝單元包括一底蓋用以封閉該 第一開口，其具有一通孔供該拉桿穿過，一管路穿過該筒 體與該第二區域連通，以及―容^連接該管路。1357464 IX. Description of the Invention: [Technical Field] The present invention relates to an extracting apparatus and method, and more particularly to an apparatus and method for extracting impurities. [Prior Art] As shown in Fig. 1, the conventional extraction device 1 includes a cylinder 11 (), which includes a hollow chamber 150, and an opening 140 is located at the front end 112 and the hollow chamber 150 of the cylinder no. In communication, a piston 12 〇 is located in the hollow chamber 150, and a pull rod 130 is coupled to the piston 12 〇 to move the piston 12 in the hollow cavity to the I50. When the piston 120 moves toward the end 114 of the cylinder 110, the piston 12 is to be extracted. The substance is drawn into the hollow chamber 15 through the opening 140. When the piston 120 moves toward the front end 112 of the barrel 110, the extracted substance in the hollow chamber 150 is discharged via the opening σ 14 . However, due to the hollow cavity, 150 is an open space at the end 114 of the cylinder 11〇, so that the wall surface of the hollow chamber 150 may adhere to impurities such as air, and impurities may pass through the piston 12 and hollow when the piston 120 moves backward. The gap 122 between the chambers 150 enters the hollow chamber 150+ located before the piston 120, so that the impurities adhering to the wall surface of the hollow chamber 150 and the impurities entering through the gap when pumping the material 122 are extracted to the hollow cavity material guide.劣化 The deterioration of the application effect. For example, when the depolarization 氦3 (3He) is extracted by the extracting device 1 'the oxygen due to the paramagnetism of the oxygen causes the superpolarization pole and the second ytterbium polarization, so as to adhere to the surface of the hollow chamber 150, The oxygen entering from the two gaps 122 makes the time delay of the super-polarization 3He 5 1357464 greatly reduced, which makes it difficult to obtain clear when using the super-polarized 3He extracted by the extracting device 100 for nuclear magnetic development (MRI). Imaging. Therefore, an apparatus and method for isolating impurities is a problem. SUMMARY OF THE INVENTION One object of the present invention is to provide an extracting device having a closed space. One of the objects of the present invention is to provide a method and apparatus for the extraction of impurities. One of the objects of the present invention is to provide an extracting device and method for preventing air permeation. One of the objects of the present invention is to provide an extracting device and method for preventing oxygen permeation. According to the present invention, an extraction apparatus includes a barrel including a hollow chamber having a first opening at an end of the barrel, and a second opening at a front end of the barrel and the second opening a hollow chamber is connected, a piston is located in the hollow chamber, an edge thereof is in contact with a wall surface of the hollow chamber, and the hollow chamber is divided into first and second regions, the first region being interposed between the piston and the cylinder Between the front ends of the body, the second area is between the piston and the first opening, a pull rod is connected to the piston to move the piston, and a buffer supply unit provides a buffer to the second area to block Impurities enter the first region, and a buffer unit causes the second region to become a closed space and collect the buffer. When the piston moves toward the end of the barrel, the substance is extracted to the first area via the second opening, and the buffer gas is discharged into the buffer unit 6 1357464. In one embodiment, the cushioning unit includes a stretchable compression container having a third opening that abuts the end of the barrel and the drawbar engages a bottom portion of the stretchable compression container. In another embodiment, the buffer unit includes a bottom cover for closing the first opening, and has a through hole for the rod to pass through, a pipeline passing through the barrel to communicate with the second area, and ^ Connect the pipe.
根據本發明，一種抽取裝置包括一筒體，其包含一中 空腔室’該中空腔室在該筒體的末端具有—第—開口，以 及一第二開口位於該筒體的前端與該中空腔室連通，一移 動單元位於該巾空腔室中，其包含有—間隔單元以及第一 與第二活塞位於該間隔單元的兩侧，該第一與第二活塞的 邊緣與該中空腔室的壁面接觸，將該中空腔室分割成第 :、第二以及第三區域，該第一區域介於該第一活塞與該 筒體前端之間，該第二區域介於該第一該第二活塞之間， 為一封閉空間，該第三區域介於該第二活塞與該第一開口 之間，一拉桿連接至該第二活塞，以移動該移動單元，以 及一緩衝物供應單元提供一緩衝物至該第二區域，以阻絕 雜質進入該第一區域。 根據本發明，一種抽取方法，用以將一物質抽取至一 抽取裝置中’該抽取裝置具有—中空腔室，—開口位於該 抽取裝置的刖端’以及—與該中空腔室接觸的活塞將該中 空腔室分割㈣一及第二區域，該第一區域經該開口與外 界連通，δ亥第一區域為一封閉空間，該抽取方法包括填充 7 1357464 -緩衝物至該第二區域以隔，將該活塞向該抽取裝 置的末端移動，使該物質經該開口被抽取至該第一區域， 將該缓衝物排人-緩衝單元，以平衡該第一及第二區域的 壓力’以及_壓力㈣後的該第—區域的容積計算該物 質被抽取的量。 本發明利用緩衝物隔離被抽取物質與㈣，避免該被 抽取物質在抽取的過程中因雜質渗人導致性質劣化，增加 物質抽取過程的安全性。 【實施方式】 圖2係本發明的抽取裴置2〇〇的示意圖，圖3係圖2 的分解圖。參考圖2及圖3,抽取裝置2〇〇包括一筒體2〇2, 其包含一中空腔室210以及一開口 2〇8，中空腔室21〇在 筒體202末端206具有一開口 207’開口 208位於筒體202 前端204與中空腔室210連通，一活塞216位於中空腔室 # 210中，其邊緣與中空腔室210的壁面接觸，將中空腔室 210分割成二個區域212及214，區域212介於活塞216 與筒體202的前端204之間，經開口 208與外界連通，區 域214介於活塞216與開口 2〇7之間，拉桿218(例如一二 狀體）的一端連接活塞216，以移動活塞216，管路23〇穿 過筒體202與區域214連通，緩衝物源228連接管路 並與管路230構成緩衝物供應單元，以提供一緩衝物至區 域214，阻絕雜質進入區域212，以及一緩衝單元如使 區域214成為-封閉空間並收集該緩衝物。在本實施例中 8 1357464 活塞216以彈性材料（例如鐵氟龍）製成，使活塞216的邊 緣與中空腔室210的壁面緊密接觸，以及緩衝單元222包 括一可拉伸壓縮容器223,其一端具有開口 224與筒體2〇ζ 的末端206密合，例如開口 224的尺寸等於筒體2〇2的外 徑，以將筒體202的末端206收納於其中。可拉伸壓縮容 器223的另一端為封閉區域，使區域214成為一封閉空 間，以阻隔該雜質進入區域214，拉桿218位於可拉伸及 φ壓縮容器223内且與其底部226連接。當拉伸可拉伸壓縮 谷器223時，活塞216向筒體202的末端206移動，欲抽 取物質經由開口 208被抽取至區域212，區域214中的緩 衝物排入可拉伸容器223中。當壓縮可拉伸壓縮容器223 時，活塞216向筒體2〇2的前端2〇4移動，可拉伸壓縮容 器223内的緩衝物進入區域214，被抽取至區域212的物 質經由開口 208排出。 ^如圖4所示，在另一實施例中，抽取裝置300藉由底 •盍302、管路3〇6以及容器綱構成圖2中的緩衝單元 222 ’圖5係圖4的分解圖，圖6係底蓋302的正視圖。 參考圖4至圖6 ’底蓋302用以封閉開口 207，其具有通 孔314供拉才干218穿過，以阻隔該雜質進入區域214，其 包括本體308具有通孔314以供拉桿218穿過，溝槽310 钱合筒體202的末端2〇6以封閉開口 2〇7，以及溝槽3Π 位^通孔314的外緣，密封單元316位於溝槽312中，使 細干218肖通孔314 t合，以避免雜質經由拉桿218與通 孔314之間的空隙進入區域214 ’以及固定單元us用以 1密封單元训以在本體谓上，以避免拉桿218移動 密封單元316與本體谓分離，導致雜f經由拉桿218 ”通孔3H之間的空隙進入區域214。較佳者，更包括— =單元220(例如—板狀體)連接拉桿218未與活塞— 連接的-端’以方便使用者施力移動活塞叫。管路遍 穿過筒體202與區域214連通，容器3()4連接管路娜以 收集緩衝物源2H)經管路23〇提供至區域214的緩衝物。 在f實施例中，溝槽310的尺寸等於筒體202的外徑，以 =體202的末端收納於其中’通孔314的尺寸等於 捍的拉桿218的外徑，密封單元316包括—圓形套環 其内徑等於或略小於拉桿施的外徑，溝槽犯 木寸等於該圓形套環的外徑，溝槽與312分別位於 的二側。固定單元318包括平板319具有通孔321 #218穿過，以及螺釘32〇及322將平板319固定 在一=308上’通孔321與通孔314的尺寸及位置均相同。 在又一施例中’溝槽310與312可位於本體308的同一側。 置，=¼例中，拉桿218與施力單元22〇為可拆解裝 方便会梓先穿過底蓋302後，再與施力單元220組合，以 性驗^。如圖7所示，在不同的實施例中，更包括一線 以機:324連接拉桿218未與活塞216連接的一端， ^的方式取代人力移動活塞216，達到節省人力及自 勖化的目的。 其勹人圖8及圖9所示，抽取裝置4〇〇包括一筒體2〇2， %中空腔室210以及一開口 2〇8，中空腔室21〇在 1357464 筒體202末端206具有一開口 207,開口 208位於筒體202 前端204與中空腔室210連通，一移動單元402位於中空 腔室210中，其包括一間隔單元406(例如一柱狀體）以及 位於間隔單元406兩側的活塞404及408,活塞404及408 的邊緣與中空腔室210的壁面接觸，將中空腔室210分割 成三個區域410、412及414’區域410介於活塞404與筒 體202的前端204之間’經開口 208與外界連通，區域412 介於活塞404及408之間，為一封閉空間，區域414介於 鲁活塞408與開口 207之間，拉桿218(例如一柱狀體）的一 端連接活塞408，以移動移動單元402，緩衝物供應單元 包括一緩衝物源228及一穿過筒體202的管路230，緩衝 物源228經由管路230提供緩衝物至區域412，以阻絕雜 質進入區域410。當移動拉桿218使移動單元402往筒體 202的末端206移動時，區域412亦往筒體202的末端206 移動，物質經由開口 208被抽取至區域41〇内，區域412 • 中的緩衝物隔絕被抽取物質與雜質（例如空氣）。較佳者， 更包括一施力單元220(例如一板狀體）連接拉桿218未與 連接單元216連接的一端，以方便使用者施力移動緩衝活 塞402。在不同的實施例中，拉桿218未與活塞4〇8連接 的一端連接一線性驅動裝置，以機械的方式取代人力移動 移動單元402，達到節省人力及自動化的目的。 圖10係應用圖4所示之抽取裝置3〇〇的偏極化氣體 (例如超偏極化氦3)抽取及輸送系統5〇〇的示意圖，用以 從基瓶504中抽取偏極化氣體並將其輸送至目標物5〇8 , 11 1357464 系統500包括一裝有該偏極化氣體的基瓶5〇4經管路5〇2 及閥門開關512、514、518及520連接開口 208，一目標 物508(例如採樣袋）經管路5〇2及閥門開關522及52〇連 接開口 208’ 一氮氣源51〇(例如一氮氣鋼瓶）經管路5〇2及 閥門開關526、524、516及530連接至區域214，作為一 緩衝物源提供氮氣（即緩衝物）至區域214，以隔離偏極化 氣體（即欲抽取的物質）與空氣（即欲隔離的雜質），容器3〇4 經管路502及閥門開關532連接至區域214，以收集區域 214中的氣氣’以及一真空幫浦5〇6經由闊門開關528連 接管路502。在以抽取裝£ 3〇〇抽取基瓶5〇4 +的偏極化 氣體之前’關閉閥門開關512及526並利用真空幫浦5〇6 將管路502、氣體抽取裝置3〇〇、容器3〇4以及目標物通 抽成真空狀態’接著關閉閥門開關528，開啟閥門開關 526,使減填充至管路5〇2、氣體抽取裝置·、容器綱 以及目標物508中，再將閥門開關似關閉，開啟閥門開 關似，利用真空幫浦506冑管路502、氣體抽取裝置300、 容器304以及目標物⑽中的聽去除使其成為真空狀 態’如此重複-至二次’以確保管路5()2、氣體抽取裝置 300、容器304以及目標物5〇8巾不利於偏極化氣體的雜 質完全去除，此時抽取裝置3〇〇内為真空狀態，活塞216 位於抽取裝置300的别端2()4。接著關閉閥門開關μ、 518-522、528及532，開啟闕門開關似，使氣氣填充至 區域214中’之後關閉閥門開關516、524、526及53〇, 開啟闊⑽關512、514、川、52〇及532，將活塞216向 12 1357464 底蓋302移動，以將基瓶504中的偏極化氣體抽取至區域 212，此時區域214的空間逐漸變小，其中的氮氣排入容 器304。當抽取至所需的偏極化氣體的數量後，關閉閥門 開關512、514及518，開啟閥門開關522，將活塞216向 抽取裝置300的前端204移動，使區域212中的偏極化氣 體注入目標物508，之後關閉閥門開關520及522，根據 後續的應用對目標物508中的偏極化氣體進行處理，例如 利用氮氣稀釋目標物508中的偏極化氣體，以供病人吸入 ® 進行核磁顯影。在此過程中，區域214為封閉空間，外界 的雜質（例如空氣或氧氣）不會進入其内，且區域214中填 充有氮氣，經由活塞216與區域214之間的空隙進入區域 212的為緩衝物而非雜質，因此偏極化氣體的性質不會劣 化，例如其偏極率不會改變。 在一實施例中，緩衝容器304為一可形變的袋狀物， 以及抽取裝置300上有刻度顯示區域212的容積，當抽取 φ 至所需的偏極化氣體約略容積後，關閉閥門開關512、 514、518及520，使區域212及214的壓力平衡，由於緩 衝容器304為可形變的袋狀物，且施力單元220位於大氣 中，因此區域212及214平衡後的壓力為一大氣壓，經由 理想氣體方程式PV=nRT得到抽與至區域212中偏極化氣 體的數量。其中，P及V分別為區域212的壓力及容積， η為區域212中偏極化氣體的摩爾數(mol)，R為理想氣體 常數，以及T為區域212的絕對溫度。 圖11係本發明之抽取方法的流程圖600。參考圖4、 13 1357464 圖5及圖11 ’在步驟610中，填充一不會使欲抽取物質性 質劣化的緩衝物至區域214，以隔離導致該欲抽取物質性 質劣化的雜質，例如當該欲抽取物質為超偏極化氦3時， 使用不會影響其偏極率的氮氣作為緩衝物以隔離空氣及 氧氣。在步驟620中，移動活塞216使其向末端206移動， 此時區域214逐漸變小，該欲抽取物質經開口 208被抽取 至區域212，經由活塞216與區域214之間的空隙進入區. 域212的為緩衝物，大幅減少滲入區域212的雜質，降低 鲁欲抽取物質接觸到雜質而導致其性質的劣化的機率，確保 物質抽取過程的安全性。在步驟630中，區域214中的緩 衝物排至容器304，使區域212及214的壓力平衡。在步 驟640中，根據壓力平衡後區域212的容積，計算抽取至 區域212中的物質量，例如當抽取的物質為氣體時，可根 據壓力平衡後區域212的氣體壓力及容積，經由理想氣體 方程式計算抽取的氣體量，當應用於抽取液體時，可經由 Φ 抽取裝置上的刻度得知抽取的液體量。較佳者，在步驟61 〇 中’活塞216隨著緩衝物的填充而移動至前端204，使得 整個中空腔室210充滿緩衝物，以完全阻隔欲抽物質與雜 質。在一實施例中，更包括在步驟610之前，去除區域212 及214中使該欲抽取物質性質劣化的雜質，例如以真空幫 浦去除區域212及214中的該雜質，以進一步降低被抽取 至區域212中的物質接觸到雜質的機率。 【圖式簡單說明】 1357464 圖1係習知抽取裝置的示意圖； 圖2係本發明之抽取裝置的第一個實施例； 圖3係圖2的分解圖； 圖4係本發明之抽取裝置的第二個實施例； 圖5係圖4的分解圖； 圖6係底蓋的正視圖； 圖7係本發明之抽取裝置的第三個實施例； 圖8係本發明之抽取裝置的第四個實施例； 圖9係圖8的分解圖； 圖10係應用本發明之抽取裝置的偏極化氣體抽取及 輸送系統的示意圖；以及 圖11係本發明之抽取方法的流程圖。 【主要元件符號說明】 100 抽取裝置 110 筒體 112 前端 114 末端 120 活塞 122 空隙 130 拉桿 140 開口 150 中空腔室 200 抽取裝置 15 1357464According to the present invention, an extraction apparatus includes a barrel including a hollow chamber having a first opening at an end of the barrel and a second opening at a front end of the barrel and the hollow cavity a chamber is connected, a moving unit is located in the hollow chamber of the towel, and includes a spacer unit and first and second pistons on opposite sides of the spacing unit, edges of the first and second pistons and the hollow chamber Wall-to-wall contact, dividing the hollow chamber into first, second and third regions, the first region being between the first piston and the front end of the cylinder, the second region being between the first and second Between the pistons, being a closed space, the third area is between the second piston and the first opening, a pull rod is connected to the second piston to move the moving unit, and a buffer supply unit provides a Buffering to the second region to block impurities from entering the first region. According to the present invention, an extraction method for extracting a substance into an extraction device 'the extraction device has a hollow chamber, the opening is at the tip end of the extraction device' and the piston in contact with the hollow chamber will The hollow chamber divides (4) a second region, the first region communicates with the outside through the opening, and the first region of the δHai is a closed space, and the extracting method comprises filling 7 1357464 - a buffer to the second region to separate Moving the piston toward the end of the extraction device, such that the substance is drawn through the opening to the first region, and the buffer is discharged to the buffer unit to balance the pressure of the first and second regions; The volume of the first region after the pressure (four) calculates the amount of the substance to be extracted. The invention utilizes the buffer to isolate the extracted material and (4), avoids the deterioration of the property of the extracted material due to the infiltration of impurities during the extraction process, and increases the safety of the material extraction process. [Embodiment] FIG. 2 is a schematic view of a drawing device 2〇〇 of the present invention, and FIG. 3 is an exploded view of FIG. Referring to Figures 2 and 3, the extraction device 2A includes a barrel 2〇2 including a hollow chamber 210 and an opening 2〇8, the hollow chamber 21 having an opening 207' at the end 206 of the barrel 202. The opening 208 is located at the front end 204 of the barrel 202 and communicates with the hollow chamber 210. A piston 216 is located in the hollow chamber #210, and its edge is in contact with the wall surface of the hollow chamber 210, and the hollow chamber 210 is divided into two regions 212 and 214. The region 212 is interposed between the piston 216 and the front end 204 of the barrel 202, communicates with the outside via the opening 208, the region 214 is interposed between the piston 216 and the opening 2〇7, and one end of the tie rod 218 (for example, a di-shaped body) is connected. The piston 216 moves the piston 216, and the conduit 23 passes through the cylinder 202 to communicate with the region 214. The buffer source 228 connects the conduit and forms a buffer supply unit with the conduit 230 to provide a buffer to the region 214 to block Impurities enter region 212, and a buffer unit, such as region 214, becomes a closed space and collects the buffer. In the present embodiment, the 8 1357464 piston 216 is made of an elastic material such as Teflon such that the edge of the piston 216 is in close contact with the wall surface of the hollow chamber 210, and the buffer unit 222 includes a stretchable compression container 223. One end has an opening 224 that is in close contact with the end 206 of the barrel 2〇ζ. For example, the opening 224 has a size equal to the outer diameter of the barrel 2〇2 to receive the end 206 of the barrel 202 therein. The other end of the stretchable compression container 223 is a closed area such that the area 214 becomes a closed space to block the impurity entry area 214, and the tie rod 218 is located within the stretchable and φ-compressed container 223 and is coupled to its bottom 226. When the stretchable compressed barrage 223 is stretched, the piston 216 is moved toward the end 206 of the barrel 202, and the material to be withdrawn is drawn through the opening 208 to the region 212, and the buffer in the region 214 is discharged into the stretchable container 223. When the stretchable compression container 223 is compressed, the piston 216 moves toward the front end 2〇4 of the barrel 2〇2, and the buffer entry region 214 in the compression container 223 can be stretched, and the substance extracted to the area 212 is discharged through the opening 208. . As shown in FIG. 4, in another embodiment, the extracting device 300 constitutes the buffer unit 222' in FIG. 2 by means of the bottom 302, the pipe 3〇6 and the container, and FIG. 5 is an exploded view of FIG. Figure 6 is a front elevational view of the bottom cover 302. Referring to Figures 4-6, a bottom cover 302 is used to close the opening 207 having a through hole 314 for the pull 218 to pass through to block the impurity entry region 214, which includes the body 308 having a through hole 314 for the pull rod 218 to pass through. The groove 310 is closed at the end 2〇6 of the cylinder 202 to close the opening 2〇7, and the outer edge of the groove 3 is located in the hole 314. The sealing unit 316 is located in the groove 312 to make the trunk 218 through the hole. 314 t is combined to prevent impurities from entering the region 214 ′ via the gap between the tie rod 218 and the through hole 314 , and the fixing unit us is used to seal the unit on the body to prevent the rod 218 from moving and the sealing unit 316 is separated from the body. , causing the impurity f to enter the region 214 via the gap between the through hole 218 ” the through hole 3H. Preferably, the -= unit 220 (for example, the plate-like body) is connected to the rod 218 and is not connected to the piston. The user applies a force to move the piston. The tubing passes through the barrel 202 to communicate with the region 214, and the container 3() 4 connects the tubing to collect the buffer source 2H) to provide buffer to the region 214 via the tubing 23 . In the embodiment, the size of the groove 310 is equal to the outer diameter of the cylinder 202 to the body 202. The end of the through hole 314 is accommodated in the outer diameter of the pull rod 218 of the crucible, and the sealing unit 316 includes a circular collar whose inner diameter is equal to or slightly smaller than the outer diameter of the pull rod, and the groove is equal to the circle. The outer diameter of the collar, the groove and the 312 are respectively located on two sides. The fixing unit 318 includes a flat plate 319 having a through hole 321 #218 passing through, and the screws 32 and 322 fixing the flat plate 319 to a '308' through hole The size and position of the 321 and the through hole 314 are the same. In another embodiment, the 'grooves 310 and 312 can be located on the same side of the body 308. In the example, the pull rod 218 and the force applying unit 22 are detachable. The disassembly is facilitated by first passing through the bottom cover 302 and then combined with the force applying unit 220 to perform the test. As shown in FIG. 7, in different embodiments, the first line is included: the 324 connecting rod 218 is not The end of the connection with the piston 216, in place of the human movement of the piston 216, achieves the purpose of saving manpower and self-destruction. As shown in Figures 8 and 9, the extraction device 4 includes a cylinder 2〇2, % hollow chamber 210 and an opening 2〇8, the hollow chamber 21 is at the end of the cylinder 202 of the 1357464 The opening 208 is located at the front end 204 of the barrel 202 and communicates with the hollow chamber 210. A moving unit 402 is located in the hollow chamber 210. The opening unit 406 includes a spacing unit 406 (for example, a columnar body) and two sides of the spacing unit 406. The pistons 404 and 408, the edges of the pistons 404 and 408 are in contact with the wall surface of the hollow chamber 210, and the hollow chamber 210 is divided into three regions 410, 412 and 414'. The region 410 is interposed between the piston 404 and the front end 204 of the barrel 202. The opening 208 is in communication with the outside, and the region 412 is interposed between the pistons 404 and 408 as a closed space. The region 414 is interposed between the Lu piston 408 and the opening 207, and one end of the tie rod 218 (for example, a columnar body) is connected. The piston 408 moves the moving unit 402. The buffer supply unit includes a buffer source 228 and a conduit 230 passing through the cylinder 202. The buffer source 228 provides a buffer to the region 412 via the conduit 230 to block the entry of impurities. Area 410. When the moving rod 218 moves the moving unit 402 toward the end 206 of the barrel 202, the area 412 also moves toward the end 206 of the barrel 202, and the substance is drawn into the area 41 through the opening 208, and the buffer in the area 412 is isolated. Extracted substances and impurities (such as air). Preferably, a force applying unit 220 (e.g., a plate-like body) is connected to one end of the connecting rod 218 that is not connected to the connecting unit 216 to facilitate the user to apply force to move the cushioning piston 402. In various embodiments, the end of the pull rod 218 that is not coupled to the piston 4A is coupled to a linear drive to mechanically replace the manual mobile unit 402 for labor and automation. Figure 10 is a schematic illustration of the application of a polarized gas (e.g., super-polarization 氦3) extraction and delivery system 5〇〇 of the extraction device 3〇〇 shown in Figure 4 for extracting polarized gas from the base bottle 504. And transporting it to the target 5〇8, 11 1357464 system 500 includes a base bottle 5〇4 containing the polarized gas, and a connection opening 208 via a pipe 5〇2 and valve switches 512, 514, 518 and 520, Target 508 (eg, a sampling bag) is connected to opening 208' via line 5〇2 and valve switches 522 and 52〇. A nitrogen source 51〇 (eg, a nitrogen cylinder) is passed through line 5〇2 and valve switches 526, 524, 516, and 530. Connected to region 214 as a buffer source to provide nitrogen (i.e., buffer) to region 214 to isolate polarized gas (i.e., the material to be extracted) from air (i.e., impurities to be isolated), container 3〇4 through the tubing 502 and valve switch 532 are coupled to region 214 to collect gas in zone 214 and a vacuum pump 5〇6 is coupled to line 502 via wide door switch 528. The valve switches 512 and 526 are closed and the vacuum pump 5 〇 6 is used to draw the line 502, the gas extraction device 3, and the container 3 before extracting the base bottle 5 〇 4 + of the polarized gas. 〇4 and the target are pumped into a vacuum state. Then the valve switch 528 is closed, the valve switch 526 is opened, and the filling is reduced to the pipeline 5〇2, the gas extraction device, the container assembly, and the target 508, and then the valve is switched. Closing, opening the valve switch, using the vacuum pump 506 胄 line 502, the gas extraction device 300, the container 304 and the target (10) to remove the sound to make it into a vacuum state 'so repeat - to the second' to ensure the pipeline 5 (2) The gas extracting device 300, the container 304, and the target 5〇8 towel are not suitable for completely removing the impurities of the polarized gas. At this time, the inside of the extracting device 3 is in a vacuum state, and the piston 216 is located at the other end of the extracting device 300. 2 () 4. Then close the valve switches μ, 518-522, 528 and 532, open the door switch, make the gas fill into the area 214 ' after closing the valve switches 516, 524, 526 and 53 〇, open the wide (10) off 512, 514, Chuan, 52〇 and 532, the piston 216 is moved toward the 12 1357464 bottom cover 302 to extract the polarized gas in the base bottle 504 to the region 212, at which time the space of the region 214 is gradually reduced, and the nitrogen gas is discharged into the container. 304. When the desired amount of polarized gas is drawn, the valve switches 512, 514, and 518 are closed, the valve switch 522 is opened, and the piston 216 is moved toward the front end 204 of the extraction device 300 to inject the polarized gas in the region 212. Target 508, then closing valve switches 520 and 522, processing the polarized gas in target 508 according to subsequent applications, such as diluting the polarized gas in target 508 with nitrogen for patient inhalation® for nuclear magnetic development. During this process, region 214 is an enclosed space into which foreign contaminants (e.g., air or oxygen) do not enter, and region 214 is filled with nitrogen, which is buffered by the gap between piston 216 and region 214 into region 212. The substance is not an impurity, so the nature of the polarized gas does not deteriorate, for example, its polarization rate does not change. In one embodiment, the buffer container 304 is a deformable bag and the volume of the scale display area 212 on the extraction device 300. When φ is drawn to the desired volume of polarized gas, the valve switch 512 is closed. 514, 518 and 520, the pressure of the regions 212 and 214 is balanced. Since the buffer container 304 is a deformable bag and the force applying unit 220 is located in the atmosphere, the pressure after the regions 212 and 214 are balanced is one atmosphere. The amount of polarized gas drawn into region 212 is obtained via the ideal gas equation PV = nRT. Wherein P and V are the pressure and volume of the region 212, η is the number of moles of the polarized gas in the region 212 (mol), R is the ideal gas constant, and T is the absolute temperature of the region 212. Figure 11 is a flow chart 600 of the extraction method of the present invention. Referring to Figures 4, 13 1357464, Figures 5 and 11 'in step 610, a buffer is applied to the region 214 that does not degrade the properties of the material to be extracted to isolate impurities that cause degradation of the properties of the material to be extracted, such as when When the material is super-polarized 氦3, nitrogen gas which does not affect its polarization rate is used as a buffer to isolate air and oxygen. In step 620, the piston 216 is moved to move toward the end 206, at which point the region 214 tapers, the material to be withdrawn is drawn through the opening 208 to the region 212, via the gap between the piston 216 and the region 214. The 212 is a buffer, which greatly reduces the impurities in the infiltration region 212, reduces the probability that the extracted material is in contact with the impurities and causes deterioration of its properties, and ensures the safety of the material extraction process. In step 630, the buffer in zone 214 is discharged to vessel 304 to balance the pressures of zones 212 and 214. In step 640, the mass of the material extracted into the region 212 is calculated according to the volume of the pressure-balanced region 212. For example, when the extracted material is a gas, the gas pressure and volume according to the pressure-balanced region 212 can be passed through the ideal gas equation. The amount of gas extracted is calculated, and when applied to the liquid, the amount of liquid extracted can be known via the scale on the Φ extraction device. Preferably, in step 61, the 'piston 216' moves to the front end 204 as the buffer fills, so that the entire hollow chamber 210 is filled with buffer to completely block the material and impurities to be pumped. In an embodiment, further comprising, prior to step 610, removing impurities in the regions 212 and 214 that degrade the properties of the material to be extracted, for example, removing the impurities in the regions 212 and 214 by vacuum pumping to further reduce the extraction to The probability of the substance in region 212 being exposed to impurities. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a conventional extraction device; FIG. 2 is a first embodiment of the extraction device of the present invention; FIG. 3 is an exploded view of FIG. Figure 2 is an exploded view of Figure 4; Figure 6 is a front view of the bottom cover; Figure 7 is a third embodiment of the extraction device of the present invention; Figure 8 is a fourth embodiment of the extraction device of the present invention. Figure 9 is an exploded view of Figure 8; Figure 10 is a schematic illustration of a polarized gas extraction and delivery system employing the extraction apparatus of the present invention; and Figure 11 is a flow diagram of the extraction method of the present invention. [Main component symbol description] 100 Extraction device 110 Cylinder 112 Front end 114 End 120 Piston 122 Clearance 130 Tie rod 140 Opening 150 Middle chamber 200 Extraction device 15 1357464
202 筒體 204 前端 206 末端 207-208 開口 210 中空腔室 212-214 區域 216 活塞 218 拉桿 220 施力單元 222 缓衝單元 223 可拉伸壓縮容器 224 開口 226 底部 228 缓衝物源 230 管路 300 抽取裝置 302 底蓋 304 容器 306 管路 308 本體 310-312 溝槽 314 通孔 316 密封單元 318 固定單元 1357464 319 平板 320 螺釘 321 通孔 322 螺釘 324 線性驅動裝置 400 抽取裝置 402 移動單元 404 活塞 406 間隔單元 408 活塞 410-414 區域 500 偏極化氣體的抽取及輸送系統 502 管路 504 基瓶 506 真空幫浦 508 目標物 510 氮氣源 512-532 閥門開關 600 抽取方法的流程圖 610 填充緩衝物 620 抽取物質 630 平衡壓力 640 計算被抽取的物質量 17202 Cylinder 204 Front end 206 End 207-208 Opening 210 Medium cavity 212-214 Area 216 Piston 218 Tie rod 220 Force unit 222 Buffer unit 223 Stretchable compression vessel 224 Opening 226 Bottom 228 Buffer source 230 Piping 300 Extraction device 302 bottom cover 304 container 306 pipe 308 body 310-312 groove 314 through hole 316 sealing unit 318 fixing unit 1357464 319 plate 320 screw 321 through hole 322 screw 324 linear drive 400 extraction device 402 moving unit 404 piston 406 interval Unit 408 Piston 410-414 Zone 500 Depolarizing Gas Extraction and Delivery System 502 Piping 504 Base Bottle 506 Vacuum Pump 508 Target 510 Nitrogen Source 512-532 Valve Switch 600 Flowchart of Extraction Method 610 Fill Buffer 620 Extraction Substance 630 Balance Pressure 640 Calculate the mass of the extracted material 17