TWI279236B - Needle guards - Google Patents

Needle guards Download PDF

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Publication number
TWI279236B
TWI279236B TW094104478A TW94104478A TWI279236B TW I279236 B TWI279236 B TW I279236B TW 094104478 A TW094104478 A TW 094104478A TW 94104478 A TW94104478 A TW 94104478A TW I279236 B TWI279236 B TW I279236B
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Taiwan
Prior art keywords
needle
sensing
plate
needle body
tip
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TW094104478A
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English (en)
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TW200538176A (en
Inventor
Richard C Sircom
David J French
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Medex Inc
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Publication of TW200538176A publication Critical patent/TW200538176A/zh
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Publication of TWI279236B publication Critical patent/TWI279236B/zh

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/3243Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3273Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel freely sliding on needle shaft without connection to syringe or needle
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/3243Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3275Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel being connected to the needle hub or syringe by radially deflectable members, e.g. longitudinal slats, cords or bands
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/3243Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/3243Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • A61M2005/325Means obstructing the needle passage at distal end of a needle protection sleeve

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Environmental & Geological Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Description

1279236 九、發明說明: 【發明所屬之技術領域】 本發明係關於醫療裝置之技術領域。特定言之,其係關 於對諸如針體和金屬線之”鋒利器材"線提供防護針體 和金屬線已被應用於一主體對象上,且需要防備措施以防 止人員遭受所使用裝置造成之刺破傷,其可能導致諸等人 員之感染風險。儘管本身可同等地應用於類似—需要 之針體或金屬線的任何鋒利器材,但本發明仍以—體
護罩π作為其特徵。 ® 【先前技術】 ;美國專利案第6,28Μ19號描述了—種針體護罩裝置,去 3亥針體之針尖回縮入一包含在該防護裝置中之密封空間或 夺/亥遵罩可自動與該針體嗤合。在該針體護罩内用於 嚙μ亥針體之機構按照一傾斜板原理運作,該傾斜板有一 個孔’該針體之軸從中通過。在部署該護罩前,且有孔之 :=垂直於該針體轴之轴而定向,且在該針體轴與該 …置之間存在一緊密滑動配合。-旦該針尖已經收回
:二罩’該板將藉由一彈菁而導致「傾斜」5戈從其相對 於針體轴之垂亩方A # M # ❼疋轉開。由於該軸與該傾斜板中之孔 “ 孔周界之邊緣可有力地與該針體表 ^糟以防止該針體在可導致該傾斜板以更大角度傾 斜之方向上進一步退回。 利案第6,扇,419號所揭之該針體護罩設計中, …斜板之可作用以停止該針體轴來防止其通過針體護罩 994SI-950824.do, 1279236 月工而進-步退回。上述傾斜板之仙發生在該針尖已娘退 回=罩腔内’且一與該傾斜板連接之感應臂能夠轉換复 位置時,此係由於該針尖之收回通過了感應臂之一肢中之 一個開π,針體可在鎖定操作開始前就先通過該開口。
=引用之專利案的特㈣計中提供—金屬線,其穿過 :體中心以及該針體護罩之主體。當該針體護罩和針體被 口時’其可沿此金屬線滑動。為了允許此等移動在針尖 進入針體護罩腔後仍能繼,續,該感應臂一肢上之開口為2 縫隙之形式。該縫之底部大収以允許該針體Μ部署針 體護罩前通過。底部以上之縫隙變窄,其寬度足以允許全 屬線通過’但其也足夠窄到可在一旦針尖從感應臂一肢之 孔中㈣時,防止針尖從針體護罩中再度伸出。在此設計 中’猎由感應臂肢之侧面的存在(其可限定該縫隙之邊界) 而防止針體之再度伸出。這些侧面保留在該針尖如從針體 濩罩中再度伸出所必需遵循之路徑中。 此種防止針尖從針體護罩中再度伸出之系統主要依賴於 針體側壁與感應板鎖定肢上之縫隙的側面間之嗤合。由於 該針體壁厚度相對較小’此種防止針尖從針體鮮中再度 伸出之方法不能提供最大可靠性。 本發明提供-種防止針尖再度伸出之系統,其為上述系 統之另一選擇,且可能比上述系統更為可靠。 首先描述本發明之-般形式,然後參考下文之圖式詳細 描述其特定具體實施例之施b此等具體實施例旨在説明 本發明之原理及其施行之方式。然後在總結本說明書之每 99481-950824.doc 1279236 進一步描述和定義本發明之最廣 一單獨之申請專利範圍中 泛及更特定之形式。 【發明内容】
在一態樣中,本發明係指一針體護罩,其具有—穷封 罩’針體可從其中伸出。在該密封罩之腔内有—㈣斜 板八具有一縫隙(諸如一個孔)’針體可通過其伸出,此 等孔具有—内表面’其可藉由提供一圍繞針體之緊密滑動 配合的第ϋ二圓周邊緣而被予㈣。—種採用與傾斜 板相連接之感應臂形式之對齊元件被提供以對齊圓周邊 緣:則更在針尖從密封罩中突出時可與針體滑行嚙合。彈 〖生彈[元件在狯封罩與感應臂之間作用以導致傾斜板在針 尖退回入密封腔時能夠相對於針體旋轉。—旦針尖退回經 匕感應#上之感應肢時即會發生該旋轉,該感應肢視需要 可此3有一縫隙、孔、或其他開口。該傾斜板之傾斜導致 限定在傾斜板孔之第—和第二圓周邊緣直接進人與針體軸 之鎖定嚙合狀態。 該傾斜板在該腔内對齊以利第—和第:壓力點間之連 接,而該等第一和第二壓力點被連接至出現並被裝載在該 密封罩之腔内之第一和第二鄰接元件上。第一壓力點被定 位成可在針尖退回入針體罩腔内時與第一鄰接元件相嚙 合,而一旦針尖在針體護罩内時,此嚙合將影響該傾斜板 之傾斜以便抑制針體進一步退回。第二壓力點被定位成可 在傾斜板一旦呈傾斜方向時與第二鄰接元件相嚙合,在任 何试圖使針尖從針體護罩再度伸出之情況發生後,第二壓 99481-950824.doc 1279236 力點與第二鄰接元件間之接觸立即傾向於旋轉傾斜板,以 便可使°亥圓周邊緣與針體軸表面進一步地嚙合。 因此,一旦該傾斜板相對於針體傾斜,該針體在相對於 穷封罩/JL 一 . 山 一方向之前進企圖都會導致壓力藉由該等鄰接 一牛L過任何一個壓力點予以施加,藉以產生圓周邊緣 ”針體表面之進_步鎖定鳴合。此結果為針尖鎖定容納在 4封罩中以防止針體進一步退回或針體再度伸出。 該感應臂充當與傾斜板相連的-對齊it件。此等部件同
步旋轉。從傾斜板向外延伸之該感應臂包含—感應肢,當 針尖從密封罩突出日寺,該感應肢可通過-個孔、縫隙、或 指狀物推向針體或針體軸面。只要感應臂肢推向針體軸, 該傾斜板就不能相對於針體旋轉。#針尖之收龍過感應 ^之感應肢% ’該感應肢、感應臂以及經連接之傾斜板可 ,由疋轉藉此允許4傾斜板採取—可使針體護罩與針體 鎖定嚙合之傾斜方位。 感應臂上之感應肢可為該感應臂之延伸形式,其包含一 具有-孔或縫隙之板,該孔或縫隙被定位及設定大小成习 在針體退回人㈣鮮之前先容納穿過W針體4 者其可能簡單地包括一指狀物,只要指狀物推向針_, 其即可防止該感應肢和感應臂發生移位。 作為一種防止針體從針體護罩 咳_ , ^ , y 早又卓中再度伸出之附加防 ^ ’ 4感應肢之-個屏障部分^在被形成於其中之孔或 縫隙下方延伸,當傾斜板採一鎖 置在針體路徑卜 I方向時,此屏.障部分停 99481-950824.doc 1279236 ' 尸稭本發明之進一步變化,另一可替代之附加再度伸出的 p平可被承載在一具有感應表面之分離彈壓支撐構件上。 此分離支撐構件被裝載在密封罩上,較佳地係在針體之與 傾斜板感應臂相對之面上。當針尖經過一分離屏障感應表 面拔出時,該彈壓支撐元件驅使該再度伸出屏障進 體路徑中’藉以防止針體再度伸出。 、 根據本發明之針體護罩可運用具有或不具有通過針體中 心之金屬線。因此本發明之針體護罩適於與Sirc〇m之美國 鲁專利案第5,458,658;5,611,781號和5,662,610攀之設計、以 及與依賴傾斜板作用之其他設計相併合。 W述總結了本發明之主要特點及其可選擇之態樣。可藉 由較佳具體實施例之描述,並結合下面圖式來進一步理解 本發明。 【實施方式】 在圖1中,一可圓柱式地環繞具有針尖3之針體2的密封 罩1已在其中固定一彈性金屬帶4,該彈性金屬帶4用以提 _供本發明之鎖定機構。該金屬帶4之底部末端5裝設在密封 罩1内壁之縫隙S中,其藉一緊密滑動配合而允許底部末端 之略从私位。该金屬呷4之鎖定板部分或傾斜板$具有一 縫隙7(諸如一個孔),針體2可通過其中而突出。帶4和傾斜 板6可以為一單件式金屬帶。或者,傾斜板6可為一硬化鋼 板型式,其被點焊在避震擋板(spring_sheld)帶4上。當該 -裝置處於圖1所示之準備狀態時,孔7之大小被設定成;提 供針體2之緊密滑動配合。該帶4延伸有一感應臂部分或具 99481-950824.doc 1279236 .有感應末端9之感應臂8。該感應臂8可藉由一凸緣而被硬 化,如藉由成為"L"型之截面者。 從感應末端9可延伸出一感應元件或感應肢…其钩在 針體2之下方。該感應肢1〇可以為板之下方部分,該板可 從感應末端9向下延伸,此板有一個孔或縫隙穿入其中(見圖 2):或可u g早地為—在針體2下方延伸之指狀物。 、π 4之弓曲部分u為彈簧承載的,其可彈壓傾斜板6來尋 ,圖戶斤示構型之順時針方向旋轉。帶4之彎曲部分11 鲁彈壓傾斜板6使其旋轉,因此部分n可由較薄彈菁或其 他相似金屬製成,而傾斜板6由較厚及較堅硬之原料製 成0 士如圖2中所示當針尖3經由感應肢1〇向右退回入密封罩工 ^ ’该感應肢1G被釋放,在f曲的彈簧承載的部分u推進 、T針向上凝轉。感應臂8也向上升高,同時也以順時 、十方向旋轉。始、封罩i之鄰近内壁29可被塑形以符合當感 應臂8向上旋轉時末端9之行進路徑。此種向上搖擺依次推 進傾斜板6以順時針方向旋轉。由於針體2和孔了間之緊密 滑動配合,該傾斜板6之旋轉幾乎可被立即停止。同時, 由於帶4攜帶有針體2,底部末端5可以在縫隙s内移動而留 有圖2中所見之小裂縫心。 始、封罩1内表面上之第一個支撐表面12可以接受帶4之傾 斜板6之下端13,進一步試圖將針體2從密封罩〗退出(圖3 令所不向右)可推進傾斜板6進一步以順時針方向旋轉。由 於與針體2表面嚙合之孔7之鄰近邊緣,基本上不會發生實 99481-950824.doc •10- 1279236 2之表面上,從而防 際旋轉,但傾斜板6穩固地鎖定在針體 止針體2從密封罩1進一步退出。
一當試圖前進針體2使其從密封罩1再度伸出時,如圖3所 示向左’現為向上旋轉之感應臂8被帶著在密封罩^内向前 推進直到感應臂8之上方部分i 4和末段9鄰$密封罩丄内部 之第二個鄰接15。同時,帶4之底部末端5可以向前移動入 裂缝SG。任何進—步試圖向左前進針體2以使其從密封罩! 中再度伸出都對傾斜板6之上端16施加壓力。如先前所 述,此舉推動傾斜板6旋轉,從而導致與針體2之進一步鎖 定嗤合。第二鄰接15可以方便地限定在凹口或隱窩25内, 呈現為面向末端9向後傾斜。同樣,為了方便,另一選擇 為缝隙S向上開口入密封罩1,同時縫隙S之側壁26(僅顯示 個)提供限定來確定帶4之方向從而確保末端9與鄰接表 面1 5對齊,如僅在圖3中所描繪。 如圖2中所示,當感應臂8之上方部分14第一次升至其旋 轉方位時,其可與第二鄰接15對齊。凹口或隱窩25可以為 符合密封罩1曲率之圓周凹槽形式,從而可促進所需之對 齊。此外’第一鄰接12可以帶有一彈性元件17,諸如彈性 塾或螺旋彈簧(後者未顯示),其可幫助底部末端5在其缝隙 中向W移動以及維持將傾斜板6旋轉彈壓向與針體2嚙合之 狀態。 圖3中所描繪的使感應臂8之上方部分14和末段9移入相 對著第二鄰接1 5之鄰接連接之移動是最小的。位於第一鄰 接12之彈性元件17有助於確保傾斜板6之下端13在針體輕 99481-950824.doc -11 - 1279236 倣w進時被向前運載,同時保持傾斜板6在其鎖定方向 上。這進一步確保了傾斜板6被推動旋轉來實現與針體之之 進一步鎖定嚙合。彈性元件17為彈性墊時,該彈性墊可以 由彈性聚合材料組成。 田该針體護罩如圖丨至3所描述被鎖定在適當位置來阻止 :體2移動以防止針尖3從密封以進一步退出或再度伸出 時,可以提供一附加之再度伸出屏障2〇,如圖4和5所見。 此屏卩早藉由固定在密封罩1内表面之縫隙22之底部末端之 ^二㈣壓彈簧帶21來提供。在㈣二條扣之另末= 端,提供一具有感應末端27之屏障板23。 在圖4中,感應末端27承抵針體2側面。在圖5中針尖3已 經越過感應末端27退回,因此在帶内之彈壓彈簧21可導致 再度伸出屏IV板23升高進入針體2之路經。其後任何前進 針體之企圖都將藉由再度伸出屏障23而被阻止。 在此方式中,可以提供防止針尖3從密封罩丨中再度伸出 之額外保障。 :本發明藉由描述其實施例加以說明時,並且當實施例 已經進仃了相當詳細的描述時,並不希望約束或以任何方 式將所附加權利要求的範圍限制為此等詳細說明。附加優 勢以及改良將很容易被熟諳此藝者所瞭解。因此本發明在 更廣㈣樣並不限於具體細節、代表裝置和方法以及所顯 不和。兄明的I兄明性實例。因此,在不背離本發明總體概念 的範圍或精神的前提下可以作出與此等細節偏離之修改。 【圖式簡單說明】 99481-950824.doc 1279236 併入本説明書且組成了本説明書之一部分的附圖説明了 本發明之具體實施例,並且和上文所給之本發明的一般性 描述及具體貫施例的詳細描述一起用於解釋本發明之原 理。 圖1為本發明具體實施例之一橫切面側視圖,其具有一 密封罩,該密封罩含有一處於準備狀態下之本發明=鎖定 機構;
圖2及圖3與圖丨視圖相似,其顯示針體退回入該密封罩 且鎖定機構與針體相响合,其被定位成可分別地防止針體 從密封罩進一步退回或針尖再度伸出; 圖4為本發明之第二個具體實施例之一橫切面側視圖, …、有在封罩,該密封罩含有—處於準備構型之鎖定機 構和裝在密封罩内之附加的再度伸出屏障;且 圖5與圖4視圖相似,其顯示針體退回入密封罩内且鎖定 機構與針體相嚙合。 【主要元件符號說明】 密封罩 針體 針尖 彈性金屬帶 金屬帶4之底部末端 鎖定板部分或傾斜板 傾斜板之縫隙 感應臂 99481-950824.doc -13- 1279236
9 感應臂之感應末端 10 感應元件或感應肢 11 彎曲部分 12 第一鄰接 13 傾斜板之下端 14 感應臂8之上方部分 15 第二個鄰接 16 傾斜板6之上端 17 彈性元件 20 附加之再度伸出屏障 21 第二個彈壓彈簧帶 22 密封罩1内表面之縫隙 23 屏障板 25 凹口或隱窩 26 縫隙S之側壁 27 感應末端 29 密封罩1之鄰近内壁 S 縫隙 SG 小裂縫 99481-950824.doc •14-

Claims (1)

1279236 十、申請專利範圍: 1· 一種具有一針尖(3)和一針體軸之針體(2)的防護裝置, 該裝置包括: 一密封罩(1),其具有一腔於其申,一針體(2)可通過 該腔而被容納; 一於該腔内之傾斜板(6),該板具有一可容納通過其中 之該針體之孔(7),該孔具有一藉由第一和第二圓周邊緣
所限定之内表面,該邊緣可提供一圍繞該針體之緊密滑 動配合; 一被連接至該傾斜板上之感應臂(8),以使得當該針尖 從該密封罩突出時可對齊該圓周邊緣以便與針體作滑行 嚙合; 彈性彈壓元件(4),其在該密封罩和該感應臂及該傾斜 板之間作用,以便可在針尖退回入密封腔後立即使傾斜 板與感應臂相對於針體旋轉; 一感應臂上之感應、肢〇〇),其可在針體退回人密封腔 之雨先接觸該針體之軸,從而只要該感應肢保持與該針 體之軸相接觸,就可抑制該感應臂和傾斜板旋轉,但是 一旦該感應肢停止與該針體之軸接觸,隨即就允許 轉; 一第一壓力點(13) ’係呈現在該傾斜板上,以及_第 W接7L件(12),係呈現及被裝載在密封罩腔内,並對 齊以在其間相接觸’該第〆壓力點被定位成可在該針尖 退回入針體護罩腔内後與該第一鄰接元件嚙合,此等嚙 99481-950824.doc 1279236 合造成該傾斜板之傾斜;以及 -第二壓力點(9或14) ’係呈現在該感應臂上,並可與 該感應臂-起旋轉,以及一第二鄰接元件(15),係被裝 載在密封罩腔内,其特徵在於該第二鄰接元件定義一表 面(15),該表面係大體上在密封|的相對穿孔間橫向延 伸並〃相對牙孔相間隔,該針體軸係穿過相對穿孔, 第二壓力點與第二鄰接元件係不對齊以在其間相接觸, 此時感應臂在一受限制不能旋轉的第一位置,且第二壓 力點與第二鄰接元件在旋轉後相對齊以在其間相接觸, 此時感應臂在一第二位置’第二遂力點被定位成可於一 旦該傾斜板採一傾斜方位便與第二鄰接元件嚙合,但在 傾斜板採一傾斜方位之前,第二壓力點係不與第二鄰接 元件相0i s ’肖卩當任何試圖進一步從針體言蒦罩收回該 針體時,該傾斜板之傾斜致使限定該傾斜板中之孔的第 一和第二圓周邊緣可被導入與該針體軸之表面作鎖定嚙 合,且在任何試圖進一步使該針尖從該針體護罩再度伸 出之後,在該第二壓力點與該第二鄰接元件間之接觸隨 即傾向於旋轉該傾斜板,以便使該圓周邊緣與該針體軸 之表面可作進一步之嚙合,藉此將該針尖鎖定地包含在 该針體護罩之密封罩内以防止該針體進一步退回或該針 尖再度伸出。 2·^請求項i之防㈣置,其中該感應臂⑻包括一在該針 尖從該密封罩突出時可承抵該針體軸之感應肢(1〇),只 要該感應臂上之該感應肢承抵該針體軸就可防止該傾斜 99481-950824.c!o, 1279236 x 板相對於該針體旋轉,在該針體退回經過該感應肢之 後,該感應肢隨即變為可自由旋轉,從而允許該傾斜板 採取一傾斜方位,而該方位允許該針體護罩與針體作鎖 疋嗜合"。 3·如請求項2之防護裝置,其中該感應臂上之感應肢(1〇)包 - 括一具有一孔之板,該孔之位置和大小適於在該針體退 - 回入該針體護罩之前先容納從其中通過之該針體。 4·如睛求項2之防護裝置,其中該感應臂上之感應肢(1〇)包 | 括一具有一縫隙之板,該縫隙之位置和大小適於在該針 體退回入針體護罩之前先容納從其中通過之該針體。 •如明求項2之防護裝置,其中該感應臂上之感應肢(丨〇)包 括“狀物’只要該指狀物承抵該針體軸就可以防止該 感應肢和感應臂之移動。 6·如明求項1至5中任何一項之防護裝置,該傾斜板(6)可在 該針體之兩個縱向方向上相對於該密封罩而移動。 7·如請求項1至5中任何一項之防護裝置,其進一步包括一 ® 彈1± tl件(1 7) ’其被定位成可在—端處彈壓該傾斜板以 便於朝向該針尖而移動。 8. 如明求項7之防護裝置,其中該彈性元件(⑺包括一彈性 〇 9. 如η月求項7之防護裳置,其中該彈性元件…)包括 • 彈簣。 -10·如=求項6之防護農置,其進—步包括—彈性元件,其 被定位成可在一端處彈壓該傾斜板以便於朝向該針央方 99481-950824.doc 1279236 向而移動。 11. 如請求項1 0之防護裝置,其中該彈性元件包括一彈性 墊。 12. 如請求項10之防護裝置,其中該彈性元件包括一螺旋彈 簧0
99481-950824.doc -4- 1279236 七、指定代表圖: (一) 本案指定代表圖為:第(1 )圖。 (二) 本代表圖之元件符號簡單說明:
1 密封罩 2 針體 3 針尖 4 彈性金屬帶 5 金屬帶4之底部末端 6 鎖定板部分或傾斜板 7 傾斜板之縫隙 8 感應臂 9 感應臂之感應末端 10 感應元件或感應肢 11 彎曲部分 12 第一鄰接 13 傾斜板之下端 14 感應臂8之上方部分 15 第二個鄰接 16 傾斜板6之上端 17 彈性元件 25 凹口或隱窩 29 密封罩1之鄰近内壁 S 縫隙 八、本案若有化學式時,請揭示最能顯示發明特徵的化學式: (無) 99481-950824.doc
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US20050182362A1 (en) 2005-08-18
TW200538176A (en) 2005-12-01
PE20051003A1 (es) 2005-11-26
AR051249A1 (es) 2007-01-03
CN1921900A (zh) 2007-02-28
EP1715905A1 (en) 2006-11-02
US7513888B2 (en) 2009-04-07
KR20070003859A (ko) 2007-01-05
UY28751A1 (es) 2005-09-30
BRPI0507456A (pt) 2007-07-10
ZA200605551B (en) 2007-12-27
PA8623901A1 (es) 2005-08-30
AU2005216873A1 (en) 2005-09-09
WO2005082439A1 (en) 2005-09-09
US20080071213A1 (en) 2008-03-20

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