TWI464376B - 檢查眼科透鏡之方法 - Google Patents

檢查眼科透鏡之方法 Download PDF

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TWI464376B
TWI464376B TW095111078A TW95111078A TWI464376B TW I464376 B TWI464376 B TW I464376B TW 095111078 A TW095111078 A TW 095111078A TW 95111078 A TW95111078 A TW 95111078A TW I464376 B TWI464376 B TW I464376B
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lens
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ophthalmic lens
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Watterson, Jr
Jonathan P Adams
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Johnson & Johnson Vision Care
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
    • B29C59/103—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment of profiled articles, e.g. hollow or tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00038—Production of contact lenses
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/0207—Details of measuring devices
    • G01M11/0214—Details of devices holding the object to be tested
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses
    • B29L2011/0041—Contact lenses

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  • Analytical Chemistry (AREA)
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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
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  • Packaging Frangible Articles (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Optical Measuring Cells (AREA)
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Description

檢查眼科透鏡之方法
本發明關於製造眼科透鏡的方法。
自1950年代以來，隱形眼鏡被商業性地用於改善視力。最早的隱形眼鏡是用硬質材料、玻璃和硬塑膠類製成。此等透鏡經由包括由人進行物理檢查的程序製造。此領域較後期的發展提出了以水凝膠類為基礎的軟式隱形眼鏡，其在今天非常受歡迎。水凝膠類是含有處於一平衡狀態之水的水合交聯聚合物系統。水凝膠類通常是氧氣可穿透的而且是生物相容的，使得此種材料是製造生物醫療裝置、特別是隱形眼鏡或眼內透鏡的較佳材料。因為此等透鏡的舒適性和受歡迎性，此等透鏡在當今是藉由包括隱形眼鏡之自動檢查的自動化程序大量生產。利用透鏡影像之眼科透鏡自動檢查已為人知。參見以下美國專利：3,794,429號；3,807,867號；3,969,023號；3,988,068號；4,035,082號；5,500,732號；5,528,357號；5,574,554號；5,627,638號；5,633,504號；5,640,464號；5,717,781號；5,719,669號；5,745,230號；5,748,300號；5,801,822號；5,805,276號；5,812,254號；5,818,573號；5,828,446號；5,995,213號；6,047,082號；6,134,342號；6,154,274號；6,301,005號；6,633,377號；及6,822,016號；及以下美國專利公告：2003/0112426號；2004/0042003號；2004/0008877號；2004/0004693號；及2003/0103201號；以上專利及專利公告之內容以引用的方式併入本文中。此類自動透鏡檢查系統(〝ALI系統〞)以一快速方式識別軟式隱形眼鏡中的撕裂處、碎屑、洞孔、及其他邊緣缺陷，通常是以每透鏡低於三十秒的速度進行。許多此類系統要求檢查處於一液體譬如處理溶液、包裝溶液及類似物內的透鏡。在某些案例中，該液體可能被ALI系統誤認為是一隱形眼鏡，這在該液體於容納著該液體及待檢查透鏡之容器之表面上不均勻分佈或起氣泡時特別會如此。由於檢查程序如此快速，ALI系統經常會將被包封在液滴內之無缺陷透鏡判定成不合格。儘管不希望被一特定機制約束，咸信此等系統會將液滴投影產生的陰影誤認為一缺陷。此造成產品浪費。若能開發出減低ALI系統在隱形眼鏡之實際缺陷與包圍透鏡之液體間的誤判的方法就會有相當好處。此項需求由本發明滿足。
本發明包括一種檢查容器內之眼科透鏡的方法，其中該眼科透鏡浸泡在一液體中，該方法本質上包括：在將該液體或該眼科透鏡加到該容器之前用一充分功率的電荷處理該容器之內表面達一段充分時間期；將該液體和該眼科透鏡加到該容器；且檢查該眼科透鏡。
在本說明書中，〝眼科透鏡〞意指一安置在眼睛內或眼睛上的裝置。此等裝置能提供光學矯正或可為化妝用。眼科透鏡一辭非侷限性包括軟式隱形眼鏡、眼內透鏡、疊蓋透鏡、眼球鑲嵌物、及光學鑲嵌物。本發明之較佳透鏡是由矽酮彈性體類或水凝膠類(非侷限性包括矽酮水凝膠類和氟化水凝膠類)製成的軟式隱形眼鏡。軟式隱形眼鏡調配物揭示於美國專利第5,710,302號、WO 9421698號、EP 406161號、JP 2000016905號、美國專利第5,998,498號、美國專利申請案第09/532,943號、美國專利第6,087,415號、美國專利第5,760,100號、美國專利第5,776,999號、美國專利第5,789,461號、美國專利第5,849,811號、美國專利第5,965,631號；及依以下專利製備的矽酮水凝膠類：美國專利第5,998,498號；美國專利申請案第09/532,943號；2000年8月30日申請之美國專利申請案第09/532,943號的部分接續申請案、2001年9月10申請之發明名稱為〝Biomedical Devices Containing Internal wetting Agents〞的美國專利申請案第60/318,536號及其相同發明名稱的非臨時對應案，2002年9月6日申請之美國專利序號10/236,538案；美國專利第6,087,415號；美國專利第5,760,100號；美國專利第5,776,999號；美國專利第5,789,461號；美國專利第5,849,811號；及美國專利第5,965,631號。以上專利和專利申請案以及本說明書中提及之其他專利和專利申請案的內容均以引用的方式併入本文中。本發明之較佳隱形眼鏡是依塔福康A(etafilcon A)、佳利福康A(galifilcon A)、聖挪福康A(senofilcon A)、雷尼福康A(lenefilcon A)、羅特利福康A(lotrifilcon A)、羅特利福康B(lotrifilcon B)、巴利福康A(balifilcon A)、玻利馬康(polymacon)、珍福康A(genfilcon A)、雷尼福康A(lenefilcon A)、巴福康(bafilcon)、阿口福康A(acofilcon A)、阿瓜福康A(aquafilcon A)、阿羅福康A(alofilcon A)、阿爾發福康A(alphafilcon A)、阿彌福康A(amifilcon A)、阿思替福康A(astifilcon A)、阿它拉福康A(atalafilcon A)、必思福康A(bisfilcon A)、布福康A(bufilcon A)、庫羅福康A(crofilcon A)、塞口福康A(cyclofilcon A)、達福康A(darfilcon A)、迭達福康A(deltafilcon A)、迭達福康B(deltafilcon B)、弟枚福康A(dimefilcon A)、杜羅思福康A(drooxifilcon A)、也皮思福康A(epsifilcon A)、也思特利福康A(esterifilcon A)、弗口福康A(focofilcon A)、佳來福康A(galyfilcon A)、勾哇福康A(govafilcon A)、黑福康A(hefilcon A)、黑福康B(hefilcon B)、黑福康D(hefilcon D)、哈拉福康A(hilafilcon A)、哈拉福康B(hilafilcon B)、哈梭意福康A(hixoifilcon A)、哈梭意福康B(hioxifilcon B)、哈梭意福康C(hioxifilcon C)、哈濁福康A(hydrofilcon A)、利塊福康A(licryfilcon A)、利塊福康B(licryfilcon B)、利得福康B(lidofilcon B)、利得福康A(lidofilcon A)、馬福康A(mafilcon A)、枚思福康A(mesifilcon A)、枚塞福康B(methafilcon B)、蜜帕福康A(mipafilcon A)、尼福康A(nelfilcon A)、尼特福康A(netrafilcon A)、歐庫福康A(ocufilcon A)、歐庫福康B(ocufilcon B)、歐庫福康C(ocufilcon C)、歐庫福康D(ocufilcon D)、歐庫福康E(ocufilcon E)、歐福康A(ofilcon A)、歐瑪福康A(omafilcon A)、歐思福康A(oxyfilcon A)、潘塔福康A(pentafilcon A)、皮福康A(perfilcon A)、皮哇福康A(pevafilcon A)、菲福康A(phemfilcon A)、西拉福康A(silafilcon A)、西羅思福康A(siloxyfilcon A)、替福康A(tefilcon A)、替特拉福康A(tetrafilcon A)、催利福康A(trifilcon A)、位福康A(vifilcon A)、或思羅福康A(xylofilcon A)。本發明之更佳透鏡是伊塔福康A(etafilcon A)、珍福康A(genfilcon A)、佳利福康A(galifilcon A)、聖挪福康A(senofilcon A)、雷尼福康A(lenefilcon A)、羅特利福康A(lotrifilcon A)、羅特利福康B(lotrifilcon B)、及巴利福康A(balifilcon A)。最佳的透鏡是佳利福康A(galifilcon A)和聖挪福康A(senofilcon A)。
在本說明書中，〝容器〞意指容納一眼科透鏡和一液體的任何容器。本發明之較佳容器是用於眼科透鏡之初級包裝、具有一置放杯和一層壓箔片蓋的泡形包裝。初級包裝之實例已為人知。參見以下美國專利提出此種包裝的實例：4,691,820號；5,054,610號；5,337,888號；5,375,698號；5,409,104號；5,467,868號；5,515,964號；5,609,246號；5,695,049號；5,697,495號；5,704,468號；5,711,416號；5,722,536號；5,573,108號；5,823,327號；5,704,468號；5,983,608號；6,029,808號；6,044,966號；及6,401,915號；該等專利之內容以引用的方式併入本文中。特佳容器是一由聚丙烯製成且未被箔片或任何其他密封劑覆蓋的置放杯。容器之〝內表面〞是與眼科透鏡相鄰的表面。
在本說明書中，〝液體〞意指被用來清洗、溶脹、儲存、消毒、或水合眼科透鏡的溶液。液體的實例非侷限性包括水，去離子水，有機溶液類，鹽水溶液類，醇類譬如甲醇、乙醇、異丙醇、t－戊醇，二氯甲烷，己烷，及被用在眼科透鏡製程中的稀釋劑。較佳稀釋劑包括有機溶劑類或水或其混合物。較佳有機溶劑包括醇類、二氯甲烷、己烷類、二醇類、三醇類、多醇類及聚烷撐二醇類。實例非侷限性包括甘油，二醇類譬如乙二醇或二甘醇；多醇類的硼酸酯譬如美國專利第4,680,336號、4,889,664號及5,039,459號揭示者；聚乙烯吡咯烷酮；乙氧基化烷基葡糖苷；乙氧基化雙酚A；聚乙二醇；丙氧基化及乙氧基化烷基葡糖苷的混合物；乙氧基化或丙氧基化烷基葡糖苷與C2 － 1 2 二羥醇的單相混合物；ε己內酯與C2 － 6 鏈烷二醇類和三醇類的加成物；乙氧基化C3 － 6 鏈烷三醇；及如美國專利第5,457,140號、5,490,059號、5,490,960號、5,498,379號、5,594,043號、5,684,058號、5,736,409號、5,910,519號揭示的上述物混合物，該等專利之內容以引用的方式併入本文中。稀釋劑亦可為從如美國專利4,680,336號所述具有一既定黏度和Hanson內聚參數之一組合的群選出，該專利之內容以引用的方式併入本文中。較佳液體為鹽水溶液類、水、及去離子水。最佳液體為水或去離子水。可在液體中添加處理輔助劑，包括界面活性劑類譬如Tween、甲基纖維素酯、羥丙基甲基纖維素酯、羧基纖維素酯及類似物，抗菌劑類譬如硝酸銀類、硼酸鹽類及類似物。但液體最好不含介面活性劑。
在本說明書中，〝電荷〞意指輸送一電流通過空氣到容器表面之一放電單元的輸出。通常電荷是經由一附接於該放電單元的電極(或其他合適傳送源)輸送。儘管不想被任何特定作用機制約束，咸信電流會提高容器的表面能且改善已處理表面的可潤濕性。較佳放電單元是一高頻電暈放電單元，其輸送一功率約為50瓦(〝W〞)至約1000W、電壓約為5仟伏(〝kV〞)至約70 kV、頻率約為20 kHz至約30 kHz的電荷。〝充分功率〞一辭意指施加於每一容器之電荷的瓦數。較佳的充分功率是約6.25 W至約31.25 W，更佳為約12.0 W至約25 W，最佳為約12.0 W至約18.75 W。
在本說明書中，〝處理〞一辭意指對容器給予電荷的任何方法。較佳來說，放電單元之輸出被放在離容器內表面底部約0.1 mm至約5.0 mm、更佳約1.0 mm至約4.0 mm、最佳約3 mm。為了使電荷施加於容器，容器應當被定位在電荷之輸出(亦即電極)與一接地源之間。
〝充分時間期〞一辭意指容器被電荷處理的時間。較佳來說，充分時間期是約0.25秒至約10秒、更佳約0.5秒至約3秒、最佳約0.5秒至約1秒。由於該充分時間期、充分功率及對於電荷輸出的距離全都可變，較佳來說每一容器被一至少約12 W的電荷處理約0.5秒，而電荷之輸出離容器底部內表面約3 mm。
在本說明書中，〝檢查〞意指眼科透鏡的自動檢查。較佳來說，此檢查是在將眼科透鏡密封於其初級包裝內之前藉由習知方法於一生產線上進行。參見美國專利第5,640,464號、5,578,331號、5,500,732號、及2003年2月21日申請的美國專利申請案第10/371，712號，該等專利及專利申請案之內容以引用的方式併入本文中。
本發明之方法在其好處當中有著減少因剔除可接受透鏡而造成的產品浪費。
為了說明本發明，提出以下實例。這些實例並不限制本發明。其僅用來建議一種實施本發明的方法。具有透鏡製程知識及其他專長的人可找出實施本發明的其他方法。但這些方法確實是在本發明的範圍內。
實例1
依美國專利第6,822,016號之實例1所述方式製備senofilicon A隱形眼鏡。將來自Tantec生產之一放電裝置的電極放在多個泡形包裝的置放杯上方(參見美國專利第5,467,868號)。該放電單元放出一250 W(22 kV)的電荷，此電荷被分到16個包裝上讓每一包裝於1秒接收15.6 W。留下多個置放杯未處理。以機械方式將透鏡轉移到已處理和未處理的置放杯並將去離子水(1,000 μL)加到這些置放杯。目視評估這些透鏡以判定其實體外觀。未處理置放杯如圖1所示。此圖例示當去離子水加到一未處理置放杯10時，水形成一包圍透鏡40的水滴30。一已處理置放杯示於圖2。此圖例示加到置放杯10的水20分散於整個置放杯且不產生一圍繞透鏡的水滴30。被包在水滴內的隱形眼鏡在被美國專利第5,578,331號及2003年2月21日申請之美國專利申請案第10/371,712號的方法檢查時經常會看起來像是受損透鏡。
圖3例示自動檢查系統所呈現之一無透鏡未處理包裝接受處理後的影像。由此圖明顯可見一水滴30類似於透鏡40(參見圖4)。圖4示出裝有一透鏡和去離子水的已處理包裝及未處理包裝。此圖例示已處理包裝會產生乾淨影像，其中僅有的可見邊緣是隱形眼鏡40的邊緣。
10．．．未處理置放杯
20．．．水
30．．．水滴
40．．．透鏡
圖1示出一裝有去離子水和一隱形眼鏡的未處理泡形杯。
圖2示出一裝有去離子水和一隱形眼鏡的已處理泡形杯。
圖3示出一被一ALI系統看到之已處理及未處理泡形杯和去離子水的影像。
圖4示出一被一ALI系統看到之已處理及未處理泡形杯、隱形眼鏡和去離子水的影像。
30．．．水滴
40．．．透鏡

Claims (5)

  1. 一種檢查容器內之眼科透鏡的方法，其中該眼科透鏡浸泡在一液體中，該方法包含：在將該液體或該眼科透鏡加到該容器之前用一充分功率的電荷處理該容器之內表面達一段充分時間期，其中該充分功率是約6W至約32W，該充分時間期是約0.2秒至約3秒；將該液體和該眼科透鏡加到該容器；且檢查該眼科透鏡，其中該眼科透鏡是一聖挪福康A(senofilcon A)軟式隱形眼鏡。
  2. 如申請專利範圍第1項之方法，其中該液體是去離子水或鹽水溶液。
  3. 如申請專利範圍第1項之方法，其中該充分功率是約12.0W至約19W。
  4. 如申請專利範圍第1項之方法，其中該處理包含從一離該容器之內表面約0.1mm至約5mm的輸出向該內表面給予該電荷。
  5. 如申請專利範圍第1項之方法，其中該充分功率是約12W，該充分時間期是約0.5秒，且該電荷輸出離該容器之底部之內表面約3mm。
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