JP2017508141A - 接触面拡散係数を用いた液体内の脂肪含量測定方法 - Google Patents
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Abstract
Description
(数1)
(数1)
本明細書において、「体液(body fluid)」という用語は、人間または動物の血清、血漿、汗、尿、及びこれと類似したものなどを指し示す。
本発明の方法において、前記液体は、体液でありうるし、前記体液は、血清、血漿、汗、及び尿から選ばれることができる。
本発明の方法において、前記液体は、体液でありうるし、前記体液は、血清、血漿、汗、及び尿から選択されることができる。
このような問題点を解決するために、本発明は、体液を撮影して取得した映像資料だけでも脂肪の含有可否及び含量を容易に判断できる方法を提供する。
前記微細液滴は、血液、尿等、各種体液及びいかなる液状の物質でもその対象となり得る。
微細液滴は、時間が経つことにより水分成分が蒸発するようになり、それと同時に微細液滴と底面との接触面積が変化することになる。
時間が経ちながら、水が前記微細液滴から蒸発し、且つ、前記微細液滴と前記固体表面との間の接触面積が変化する。
前記微細液滴から水の蒸発に基づいた変化を考慮すれば、前記微細液滴の体積が減少するほど、前記接触径及び前記接触面積が減少する。
蒸発過程で接触面積が減少する理由は、前記微細液滴の形状を維持しようとする力が作用するためである。
(数1)
前記数式(1)において、d(t)は、時間(t)経過後の接触径であり、d0は、初期接触径である。
本明細書で、このような接触面積の変化度を接触面拡散係数(contact area diffusion factor(CADF))という。
このような事実は、水分蒸発によって所定の時間(t)後の液滴の形状が初期液滴の形状よりさらに平たくなることを意味する。
特に、脂肪成分以外の他の要素等、例えば、イオン濃度やpH値などの変化は、CADFに影響を与えることができないという事実を見出した。
図4において横軸は、手術後の経過日付を示し、手術前の0.5日(12時間)前から手術後の5日経過時まで12時間毎にCADFを測定した。
(数2)
(数3)
CADFから求めた総脂肪酸濃度とGC測定から求めた総脂肪酸濃度とが極めてよく符合することが分かる。
図10は、血漿サンプルの希釈によるCADFの変化を示すグラフである。尿の場合と同様に、CADF値が濃度のログ値に比例する。
前述したことに基づいて、当業者は、本発明の技術的効果が次のとおりであるという点が分かる。
Claims (9)
- 前記液体が体液であることを特徴とする請求項1に記載の方法。
- 前記体液が血清、血漿、汗、及び尿からなる群より選ばれるものであることを特徴とする請求項2に記載の方法。
- 液体を撥水性表面上に液滴状態で載せるステップ(s1100)と、
前記液滴に対する映像から拡大された映像を得るステップ(s1200)と、
前記拡大された映像から前記撥水性表面と前記液滴との間の接触面積(A(0))を得るステップ(s1300)と、
所定の時間(t)経過後、前記拡大された液滴映像から前記撥水性表面と前記液滴との間の接触面積(A(t))を求めるステップ(s1400)と、
を含み、
A(t)−A(0)の値が正数または負数であるかによって前記液体内に脂肪が存在するかを判断することである、接触面拡散係数を用いた液体内の脂肪含量測定方法。 - 前記液体が体液であることを特徴とする請求項4に記載の方法。
- 前記体液が血清、血漿、汗、及び尿からなる群より選ばれるものであることを特徴とする請求項5に記載の方法。
- 液体を撥水性表面上に液滴状態で載せるステップ(s2100)と、
前記液滴に対する映像から拡大された映像を得るステップ(s2200)と、
前記拡大された映像から接触径(d0)を得るステップ(s2300)と、
所定の時間(t)経過後、前記拡大された液滴映像から接触径(d(t))を求めるステップ(s2400)と、
を含み、
d(t)−d0の値が正数または負数であるかによって前記体液内に前記脂肪が存在するかを判断することである、接触面拡散係数を用いた液体内の脂肪含量測定方法。 - 前記液体が体液であることを特徴とする請求項7に記載の方法。
- 前記体液が血清、血漿、汗、及び尿からなる群より選ばれるものであることを特徴とする請求項8に記載の方法。
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PCT/KR2014/001077 WO2015119314A1 (ko) | 2014-02-07 | 2014-02-07 | 접촉면 확산계수를 이용한 액체 내 지방 함량 측정 방법 |
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EP (1) | EP3104160B1 (ja) |
JP (1) | JP6319856B2 (ja) |
KR (1) | KR20160148519A (ja) |
CN (1) | CN106030279B (ja) |
AU (1) | AU2014382210B2 (ja) |
CA (1) | CA2937163C (ja) |
IL (1) | IL246778A0 (ja) |
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Cited By (2)
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JP2018136327A (ja) * | 2018-03-30 | 2018-08-30 | 株式会社フェムトバイオメド | 接触面拡散係数を用いた液体内の脂肪含量測定方法 |
US11165993B2 (en) | 2012-12-17 | 2021-11-02 | Femtobiomed Inc. | Contact area diffusion factor for quantifying fat contents of liquid |
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KR102086840B1 (ko) * | 2017-04-26 | 2020-03-09 | 주식회사 펨토바이오메드 | 접촉면 확산계수를 이용한 액체 내 소수성 성분의 정량 방법 및 이를 이용한 질환의 진단에 대한 정보 제공 방법 |
US11009525B1 (en) * | 2020-05-14 | 2021-05-18 | Globalfoundries U.S. Inc. | System and method for measuring electrical properties of materials |
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Cited By (2)
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US11165993B2 (en) | 2012-12-17 | 2021-11-02 | Femtobiomed Inc. | Contact area diffusion factor for quantifying fat contents of liquid |
JP2018136327A (ja) * | 2018-03-30 | 2018-08-30 | 株式会社フェムトバイオメド | 接触面拡散係数を用いた液体内の脂肪含量測定方法 |
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JP6319856B2 (ja) | 2018-05-09 |
CN106030279A (zh) | 2016-10-12 |
AU2014382210B2 (en) | 2018-12-13 |
WO2015119314A1 (ko) | 2015-08-13 |
EP3104160A4 (en) | 2017-09-27 |
RU2657304C2 (ru) | 2018-06-13 |
RU2016135755A3 (ja) | 2018-03-15 |
IL246778A0 (en) | 2016-08-31 |
CA2937163C (en) | 2022-05-31 |
AU2014382210A1 (en) | 2016-08-18 |
KR20160148519A (ko) | 2016-12-26 |
EP3104160B1 (en) | 2021-11-24 |
RU2016135755A (ru) | 2018-03-15 |
CN106030279B (zh) | 2019-08-13 |
CA2937163A1 (en) | 2015-08-13 |
EP3104160A1 (en) | 2016-12-14 |
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