JP5819391B2 - 流体収集キャニスタ内で使用するための電気接点保護を伴うセンサおよびそれを含む陰圧創傷療法システム - Google Patents
流体収集キャニスタ内で使用するための電気接点保護を伴うセンサおよびそれを含む陰圧創傷療法システム Download PDFInfo
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- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/02—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid
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- A61M1/60—Containers for suction drainage, adapted to be used with an external suction source
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- A61M1/71—Suction drainage systems
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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
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- A61M1/78—Means for preventing overflow or contamination of the pumping systems
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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/98—Containers specifically adapted for negative pressure wound therapy
- A61M1/982—Containers specifically adapted for negative pressure wound therapy with means for detecting level of collected exudate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
- G01F23/268—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors mounting arrangements of probes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/912—Connectors between dressing and drainage tube
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
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- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3317—Electromagnetic, inductive or dielectric measuring means
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- A—HUMAN NECESSITIES
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- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
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- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
- A61M2205/3382—Upper level detectors
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/598—With repair, tapping, assembly, or disassembly means
- Y10T137/6031—Assembling or disassembling rotary valve
- Y10T137/6048—Butterfly valve
- Y10T137/6055—With head and stem collections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7879—Resilient material valve
- Y10T137/7888—With valve member flexing about securement
- Y10T137/789—Central mount
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Description
本願は、米国仮特許出願第61/090,782号(名称「WOUND THERAPY SYSTEM WITH CANISTER FILL DETECTOR」、2008年8月21日出願)の優先権を主張し、この出願の開示は、その全体が本明細書に参考として援用される。
本開示は、陰圧創傷療法システムに関し、より具体的には、流体収集キャニスタ内で使用するための電気接点保護を備えるセンサ、および同センサを含む陰圧創傷療法システムに関する。
吸引療法または真空療法としても周知である陰圧療法は、創傷の治療および治癒において使用されている。創傷上に局在させたリザーバに、陰圧、例えば、減圧または準大気圧を印加することによる開放創の治療は、創傷領域での血液循環を増加させ、肉芽組織の形成を刺激し、創傷上への健常組織の遊走を促進することによって、創傷の閉鎖を補助することが見出されている。陰圧療法はまた、細菌を宿しがちであり得る滲出液等の創傷からの創傷流体を引き出すことにより、細菌の増殖を阻止し得る。故に、陰圧療法は、その消毒効果および組織再生効果から、治癒法として適用され得る。本技法は、慢性的もしくは治癒抵抗性の創傷および潰瘍を含む、種々の創傷状態の治療に対して効果的であることが立証されており、術後の創傷の手当て等の他の目的のためにも使用されている。
例えば、本願発明は以下の項目を提供する。
(項目1)
流体収集用のキャニスタ内で使用するためのセンサであって、該キャニスタは、キャニスタ上部を有し、および流体収集チャンバを画定し、該センサは、
第1の部分および第2の部分を含む第1の電極であって、該第1の電極の該第1の部分は、該キャニスタ上部によって支持され、該第1の電極の該第2の部分は、該流体収集チャンバ内へと延在するように構成される、第1の電極と、
第1の部分および第2の部分を含む第2の電極であって、該第2の電極の該第1の部分は、該キャニスタ上部によって支持され、該第2の電極の該第2の部分は、該流体収集チャンバ内へと延在するように構成される、第2の電極と、
該第1および第2の電極と関連した電気特性を検出するように構成される電気回路と
を備える、センサ。
(項目2)
前記流体収集チャンバ内に配置される内部チャンバをさらに備え、該内部チャンバは、前記キャニスタ上部、内壁、および底端部によって囲まれており、前記第1および第2の電極の前記第2の部分は、該内部チャンバ内に配置される、項目1に記載のセンサ。
(項目3)
前記内部チャンバの前記底端部の少なくとも一部分は、水溶性フィルムから形成される、項目2に記載のセンサ。
(項目4)
前記水溶性フィルムは、該水溶性フィルムの特性、前記流体収集チャンバ内に収容される流体の特性、および該流体の該流体収集チャンバへの流量のうちの少なくとも1つに応じて、一定期間にわたって溶解する、項目3に記載のセンサ。
(項目5)
前記水溶性フィルムの前記特性は、該水溶性フィルムの厚さ、該水溶性フィルムの密度、および該水溶性フィルムの組成のうちの少なくとも1つである、項目4に記載のセンサ。
(項目6)
前記流体収集チャンバ内に収容される前記流体の前記特性は、該流体のpH、該流体の粘度、および該流体のイオン組成のうちの少なくとも1つである、項目4に記載のセンサ。
(項目7)
前記電気回路は、前記第1の電極と第2の電極とにわたる電圧測定値を検出するように構成される、項目1に記載のセンサ。
(項目8)
前記第1の電極と第2の電極とにわたる電圧の変化の測定値は、状態を示すための表示器を作動させるために使用される、項目7に記載のセンサ。
(項目9)
前記状態は、キャニスタ交換状態である、項目8に記載のセンサ。
(項目10)
前記状態は、キャニスタ充満状態である、項目8に記載のセンサ。
(項目11)
可搬式陰圧創傷療法システムであって、
創傷に陰圧を印加するために該創傷上に位置する手当アセンブリと、
キャニスタアセンブリであって、
制御ユニットと、
該制御ユニット内に配置される真空源と、
該制御ユニットと連通している圧力センサと、
収集キャニスタであって、該収集キャニスタは、該手当アセンブリと流体連通している入口導管と、該手当アセンブリからの創傷流体を収集するチャンバと、該創傷流体を該手当アセンブリから該チャンバへ導入するために該入口導管に連結される入口ポートと、該チャンバおよび該真空源と連通する吸引ポートとを含む、収集キャニスタと、
該収集キャニスタと関連した状態を検出するセンサであって、該センサは、
第1の部分および第2の部分を含む第1の電極であって、該第1の電極の該第1の部分は、該キャニスタ上部によって支持され、該第1の電極の該第2の部分は、該流体収集チャンバ内へと延在するように構成される、第1の電極と、
第1の部分および第2の部分を含む第2の電極であって、該第2の電極の該第1の部分は、該キャニスタ上部によって支持され、該第2の電極の該第2の部分は、該流体収集チャンバ内へと延在するように構成される、第2の電極と、
該第1および第2の電極と関連した電気特性を検出するように構成される電気回路であって、該第1および第2の電極の該第2の部分は、滲出液の乾燥によって形成される付着物を阻止するためにコーティングによって被覆される、電気回路と
を含む、センサと
を含む、キャニスタアセンブリと
を備える、システム。
(項目12)
前記キャニスタアセンブリは、前記チャンバおよび前記収集キャニスタと連通する変換器ポートをさらに含む、項目11に記載の可搬式陰圧創傷療法システム。
(項目13)
前記制御ユニットは、前記キャニスタ内の陰圧を監視および制御する、項目11に記載の可搬式陰圧創傷療法システム。
(項目14)
創傷治癒に関連する陰圧療法のためのシステムであって、
創傷床に対して位置する手当アセンブリと、
陰圧機構であって、
制御ユニットと、
該制御ユニットによって印加される陰圧の下で、該創傷から除去された滲出液を収集する収集キャニスタと、
検出回路であって、該検出回路は、該収集キャニスタ内に配置される第1および第2の導電性接点と表示器とを含み、該表示器は、滲出液が該第1および第2の導電性接点と接触すると、知覚可能な表示を提供するように適合される、検出回路と
を含む、陰圧機構と
を備える、システム。
(項目15)
前記検出回路は、前記第1の導電性接点と前記第2の導電性接点との間に滲出液が不在であるときには開放している、項目14に記載のシステム。
(項目16)
前記検出回路は、滲出液が前記第1および第2の導電性接点と接触すると閉鎖される、項目14に記載のシステム。
(項目17)
前記第1および第2の導電性接点は、前記収集キャニスタの最大充填容量に相当する該収集キャニスタ内の位置に取り付けられる、項目14に記載のシステム。
で市販されている。接触層18としての使用に好適であり得る材料の別の実施例は、Tyco Healthcare Group LP(d/b/a Covidien)によって提供される、市販のCURITY(登録商標)非接着性手当材である。
)IIの下で市販される透明膜である。透明膜は、創傷状態の視覚的評価を、被覆層24の除去を必要とすることなく行うことを可能にすることを補助する。
Claims (23)
- 陰圧創傷療法システムであって、
創傷流体を収集するように構成されたチャンバを含む収集キャニスタと、
前記収集キャニスタに関連付けられた状態を検出するように構成されたセンサであって、前記センサは、
第1の部分および第2の部分を含む第1の電極であって、前記第1の電極の前記第1の部分は、前記収集キャニスタの表面によって支持されており、前記第1の電極の前記第2の部分は、前記チャンバ内へと延在している、第1の電極と、
第1の部分および第2の部分を含む第2の電極であって、前記第2の電極の前記第1の部分は、前記収集キャニスタの表面によって支持されており、前記第2の電極の前記第2の部分は、前記チャンバ内へと延在している、第2の電極と
を含む、センサと、
前記チャンバ内に配置された内壁であって、前記第1の電極および前記第2の電極の前記第2の部分は、前記収集キャニスタの上部と前記内壁との間の領域内に配置される、内壁と
を含み、
前記第1の電極および前記第2の電極における抵抗、静電容量、または電圧の変化は、前記収集キャニスタに関連付けられた前記状態を示し、
前記第1の電極および前記第2の電極の前記第1の部分は、第1の直径および丸い端部を含んでおり、前記第1の電極および前記第2の電極の前記第2の部分は、第2の直径および円筒形状を含んでおり、前記第1の直径は、前記第2の直径よりも大きい、陰圧創傷療法システム。 - 前記内壁は、
前記収集キャニスタが傾斜されたときに、前記創傷流体を、前記第1の電極および前記第2の電極と接触することから逸らすことと、
前記チャンバが実質的に充満したときに、前記創傷流体が、前記第1の電極および前記第2の電極と接触することを可能にすることと
を行うように構成されている、請求項1に記載の陰圧創傷療法システム。 - 前記収集キャニスタの前記上部と前記内壁との間の前記領域は、前記収集キャニスタが前記創傷流体で実質的に充満されたときに、前記創傷流体で充満されるように構成されている、請求項1に記載の陰圧創傷療法システム。
- 真空源と、前記チャンバおよび前記真空源と連通するように構成された吸引ポートとをさらに含む、請求項1に記載の陰圧創傷療法システム。
- 制御ユニットをさらに含む、請求項1に記載の陰圧創傷療法システム。
- 前記制御ユニットは、前記収集キャニスタ内の陰圧を監視および制御するように構成されている、請求項5に記載の陰圧創傷療法システム。
- 前記制御ユニットと連通している圧力センサをさらに含む、請求項5に記載の陰圧創傷療法システム。
- 前記第1の電極および前記第2の電極に関連付けられた電気特性を検出するように構成された回路をさらに含む、請求項1に記載の陰圧創傷療法システム。
- 前記収集キャニスタ内の前記状態は、キャニスタ交換状態またはキャニスタ充満状態を含む、請求項1に記載の陰圧創傷療法システム。
- 前記チャンバ内に配置された内壁をさらに含み、前記内壁は、前記チャンバと一体的であり、前記チャンバから除去可能ではなく、前記第1の電極および前記第2の電極の前記第2の部分は、前記収集キャニスタの上部と前記内壁との間の領域内に配置されている、請求項1に記載の陰圧創傷療法システム。
- 前記収集キャニスタは、入口導管を含む、請求項1に記載の陰圧創傷療法システム。
- 陰圧創傷療法システムであって、
創傷流体を収集するように構成されたチャンバを含む収集キャニスタと、
前記収集キャニスタに関連付けられた状態を検出するように構成されたセンサであって、前記センサは、
第1の部分および第2の部分を含む第1の電極であって、前記第1の電極の前記第1の部分は、前記収集キャニスタの表面によって支持されており、前記第1の電極の前記第2の部分は、前記チャンバ内へと延在している、第1の電極と、
第1の部分および第2の部分を含む第2の電極であって、前記第2の電極の前記第1の部分は、前記収集キャニスタの表面によって支持されており、前記第2の電極の前記第2の部分は、前記チャンバ内へと延在している、第2の電極と
を含み、
前記第1の電極および前記第2の電極における抵抗、静電容量、または電圧の変化は、前記収集キャニスタに関連付けられた前記状態を示す、センサと、
前記チャンバ内に配置された内壁であって、前記第1の電極および前記第2の電極の前記第2の部分は、前記収集キャニスタの上部と前記内壁との間の領域内に配置されている、内壁と
を含む、陰圧創傷療法システム。 - 前記内壁は、
前記収集キャニスタが傾斜されたときに、前記創傷流体を、前記第1の電極および前記第2の電極と接触することから逸らすことと、
前記チャンバが実質的に充満したときに、前記創傷流体が、前記第1の電極および前記第2の電極と接触することを可能にすることと
を行うように構成されている、請求項12に記載の陰圧創傷療法システム。 - 前記収集キャニスタの前記上部と前記内壁との間の前記領域は、前記収集キャニスタが前記創傷流体で実質的に充満されたときに、前記創傷流体で充満されるように構成されている、請求項12に記載の陰圧創傷療法システム。
- 真空源と、前記チャンバおよび前記真空源と連通するように構成された吸引ポートとをさらに含む、請求項12に記載の陰圧創傷療法システム。
- 制御ユニットをさらに含む、請求項12に記載の陰圧創傷療法システム。
- 前記制御ユニットは、前記収集キャニスタ内の陰圧を監視および制御するように構成されている、請求項16に記載の陰圧創傷療法システム。
- 前記制御ユニットと連通している圧力センサをさらに含む、請求項16に記載の陰圧創傷療法システム。
- 前記収集キャニスタ内の前記状態は、前記第1の電極および前記第2の電極が前記収集キャニスタ内の流体と同時に接触したときに示される、請求項12に記載の陰圧創傷療法システム。
- 前記第1の電極および前記第2の電極に関連付けられた電気特性を検出するように構成された回路をさらに含む、請求項12に記載の陰圧創傷療法システム。
- 前記収集キャニスタ内の前記状態は、キャニスタ交換状態またはキャニスタ充満状態を含む、請求項12に記載の陰圧創傷療法システム。
- 前記内壁は、前記チャンバと一体的であり、前記チャンバから除去可能ではない、請求項12に記載の陰圧創傷療法システム。
- 前記収集キャニスタは、入口導管を含む、請求項12に記載の陰圧創傷療法システム。
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- 2009-06-16 WO PCT/US2009/047463 patent/WO2010021783A1/en active Application Filing
- 2009-06-16 EP EP17162493.5A patent/EP3213780A1/en not_active Withdrawn
- 2009-06-16 AU AU2009283094A patent/AU2009283094B2/en not_active Ceased
- 2009-06-16 JP JP2011523840A patent/JP5588985B2/ja not_active Expired - Fee Related
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EP2313124B1 (en) | 2017-07-26 |
US20140371697A1 (en) | 2014-12-18 |
JP5588985B2 (ja) | 2014-09-10 |
US10737000B2 (en) | 2020-08-11 |
EP3213780A1 (en) | 2017-09-06 |
US9415145B2 (en) | 2016-08-16 |
AU2009283094A1 (en) | 2010-02-25 |
EP2313124A1 (en) | 2011-04-27 |
JP2012500086A (ja) | 2012-01-05 |
CA2732514A1 (en) | 2010-02-25 |
WO2010021783A1 (en) | 2010-02-25 |
AU2009283094B2 (en) | 2014-12-11 |
JP2014054570A (ja) | 2014-03-27 |
US20160331877A1 (en) | 2016-11-17 |
US8827983B2 (en) | 2014-09-09 |
EP2313124A4 (en) | 2016-03-30 |
US9801984B2 (en) | 2017-10-31 |
CA2732514C (en) | 2018-01-16 |
JP2014237050A (ja) | 2014-12-18 |
US20100049150A1 (en) | 2010-02-25 |
US20180104387A1 (en) | 2018-04-19 |
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