JP6975770B2 - 流体流の感知 - Google Patents
流体流の感知 Download PDFInfo
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Description
本出願は、2016年7月8日に出願された米国仮特許出願第62/360,248号の利益を主張し、その全体が参照により本明細書に組み込まれる。
本開示の一態様では、液体および空気の組み合わせを含む流体投入部から液体を採集するように構成された流体採集装置が本明細書に提供される。採集された液体は、次に、装置から液柱、またはスラグとして導管に排出されてもよく、それは次に1つ以上のセンサによって検出され得る。いくつかの実施形態では、流体採集装置は、(a)入口および出口を含むハウジングであって、入口がハウジングの近位端に位置し、出口がハウジングの遠位端に位置する、ハウジングと、(b)ハウジングの近位端でハウジング内に配置されたリザーバと、(c)リザーバとハウジングの遠位端との間でハウジング内に位置付けられた複数のチャネル分割器であって、近位端と遠位端とを有し、ハウジング内に複数の流路を画定する、複数のチャネル分割器と、(d)複数のチャネル分割器の遠位端とハウジングの遠位端との間でハウジング内に位置付けられた液体採集領域と、を備え、ハウジングは、ハウジングの内部を通って入口と出口とを接続する1つ以上の流体通路を備え、リザーバ、複数のチャネル、および液体採集領域は、ハウジング内の1つ以上の流体通路内で流体連通している。
本明細書に記載の流体採集装置を使用してスラグとして採集された液体は、1つ以上の流量センサによって検出され得る。いくつかの実施形態では、流量センサは、経時的に2つ以上の流体採集装置と共に使用することができるシステムの耐久性または再使用可能部分内に収容される。非限定的な例として、流量センサは、陰圧システムのメインユニット内に収容されており、メインユニットは、陰圧源と、必要に応じて圧力センサを含む1つ以上の追加の要素とを備える。いくつかの実施形態では、流量センサは、当業者に知られており、かつ利用可能な赤外線センサである。非限定的な例として、流量センサは、反射型光センサなどの赤外線センサである。反射型光センサの特定の例には、Broadcom製の品番HSDL−9100−024が含まれる。このようなセンサは、アナログ出力反射型センサとIRエミッタおよびフォトダイオードを組み合わせたものである。これらのセンサは、50nsの標準立ち上がり時間と、50nsの標準立下り時間を有し、液体スラグの先頭部と後尾部を検出するためのタイミング遅延を最小限に抑える。当業者に利用可能なさらなるセンサとしては、Optek Technologyによって製造されるものの、品番OPB350などのチューブセンサが含まれる。そのようなチューブセンサは、特定のサイズの管材、例えば1/8インチ管材に対して動作し、存在する透明な液体がフォトトランジスタに最大電流をシンクさせる一方、存在する暗い液体が、それを最小電流にシンクさせるように動作する。これらのセンサは、より遅い応答時間、50マイクロ秒未満の立ち上がり時間、および50から250マイクロ秒の範囲の立ち下がり時間を有し得るが、それでも本明細書に記載の方法での使用に適した応答時間を提供する。
本開示の一態様では、本明細書に記載の流体採集装置および/または流量感知装置を備えるシステムが本明細書に提供される。いくつかの実施形態では、流体採集装置と流量感知装置とを含む装置システムが提供される。本明細書で提供されるシステムは、1つ以上の付属要素、例えば陰圧療法を実施するのに有用な要素をさらに含んでもよい。いくつかの実施形態では、付属品は、創傷包帯を含む。いくつかの実施形態において、付属品は、採集キャニスターを含む。いくつかの実施形態では、付属品は、包帯、キャニスター、および/または感知装置に接続するように構成された1つ以上の導管または管材を含む。いくつかの実施形態では、付属品は、包帯を採集キャニスターに接続し、採集キャニスターを感知装置に接続し、そして包帯を感知装置に接続するように構成されたコネクタを含む。
一般的に2で示されるような流体採集装置を製造した。幅15〜20mmおよび長さ15〜30mmを有し、装置の入口を通って受容するように構成されているリザーバを装置の近位端に位置付ける。長さ1〜10mm、近位幅0.5〜8mm、遠位幅0.5〜7mmを有し、この領域内に採集された液体のスラグを管に放出するように構成されている液体採集領域を、装置の遠位端に位置付ける。5つのチャネルを画定する4つのチャネル分割器を、リザーバと液体採集領域との間に位置付ける。各分流器は、幅が0.1〜5mmであり、0.1〜5mmの幅を有するチャネルを画定する。この分割器は、1〜20度に先細にされ、その結果、複数の近位端は、複数の遠位端よりも広くなる。この構成は、チャネルの遠位端近くのチャネル内の液体の蓄積を容易にする。装置の全長は、75mmであり、30mmの幅を伴う。
実施例1の流体採集装置を使用して、流体と空気の混合物を含む流体投入口から液体のスラグを採集した。液体の公称流量を毎分3ccに設定し、毎分10ccの空気流量を液体と混合して二相流を確立した。スラグが実施例1の装置によって照合されると、それらは検出導管を通過し、そこで一対の赤外線センサによって検出された。赤外線センサは、Optek Technology製の品番OPB350の種類のものであり、一対のセンサは、50mm離して配置した。
Claims (102)
- 流体流感知システムであって、
a)流体採集装置であって、前記流体採集装置の近位端に位置する入口と、前記流体採集装置の遠位端に位置する出口とを有するハウジングを備え、前記ハウジングの内部が、リザーバと、複数のチャネルを画定する複数のチャネル分割器と、液体採集領域とを備え、前記ハウジングが、前記ハウジングの内部を通って前記入口と前記出口とを接続する1つ以上の流体通路を備え、前記リザーバ、前記複数のチャネル、および前記液体採集領域が、前記ハウジング内の1つ以上の流体通路内で流体連通している、流体採集装置と、
b)入口および出口を備えるキャニスターであって、前記キャニスターの前記入口が、検出導管を介して前記ハウジングの前記出口と流体連通するように構成されている、キャニスターと、
c)入口を有するケーシング、陰圧源、および複数のセンサを備える感知装置であって、前記ケーシングの前記入口が、陰圧導管を介して前記キャニスターの前記出口と流体連通するように構成されており、前記複数のセンサが、前記ケーシングの外側に位置しており前記検出導管を通過する液柱が該複数のセンサの視野内にあるように前記ケーシング内に位置している、感知装置と、を備える、流体流感知システム。 - 前記流体採集装置の前記入口が、創傷導管を介して患者の創傷部位に接続されるように構成されている、請求項1に記載の流体流感知システム。
- 前記検出導管が、0.5mm〜5mm以下の内径を有する、請求項1または請求項2に記載の流体流感知システム。
- 前記流体採集装置およびキャニスターが、前記陰圧源によって加えられた大気圧よりも、80〜125mmHg低い陰圧に耐えるように構成されている、請求項1〜3のいずれかに記載の流体流感知システム。
- 前記流体採集装置が、前記キャニスターと一体である、請求項1〜4のいずれかに記載の流体流感知システム。
- 前記陰圧源が、ダイヤフラムポンプを含む、請求項1〜5のいずれかに記載の流体流感知システム。
- 前記陰圧導管の少なくとも一部が、コネクタ内に収容されている、請求項1〜6のいずれかに記載の流体流感知システム。
- 前記コネクタが、電源を含む、請求項7に記載の流体流感知システム。
- 前記検出導管が、3000cm −1 〜4000cm −1 の波数の赤外線に対して透過性の材料を含む、請求項1〜8のいずれかに記載の流体流感知システム。
- 前記検出導管が、0.1mm〜5mmの厚さを有する、請求項1〜9のいずれかに記載の流体流感知システム。
- 前記検出導管が、ポリ塩化ビニル、ポリカーボネート、高密度ポリエチレン、ポリスチレン、またはこれらの組み合わせを含む、請求項1〜10のいずれかに記載の流体流感知システム。
- 前記複数のチャネルが、10μL〜200μLの液体を蓄積するように構成されている、請求項1〜11のいずれかに記載の流体流感知システム。
- 前記感知装置が、前記陰圧導管内の圧力を検出するように構成された圧力センサをさらに備える、請求項1〜12のいずれかに記載の流体流感知システム。
- 前記流体採集装置が、先細になっており、前記流体採集装置の近位端が、前記流体採集装置の遠位端の幅よりも大きい幅を有する、請求項1〜13のいずれかに記載の流体流感知システム。
- 前記流体採集装置の前記近位端の幅が、前記流体採集装置の前記遠位端の幅の少なくとも2〜5倍である、請求項14に記載の流体流感知システム。
- 前記液体採集領域の近位端の幅が、1mm〜8mmである、請求項1〜15のいずれかに記載の流体流感知システム。
- 前記液体採集領域が、先細になっており、前記液体採集領域の遠位端の幅が、0.5〜7mmである、請求項16に記載の流体流感知システム。
- 前記複数のチャネル分割器のうちの1つ以上の長さが、2mm〜50mmである、請求項1〜17のいずれかに記載の流体流感知システム。
- 前記ハウジングの内部の高さが、0.1mm〜5mmである、請求項1〜18のいずれかに記載の流体流感知システム。
- 前記複数のチャネルのうちの1つ以上の幅が、0.1mm〜5mmである、請求項1〜19のいずれかに記載の流体流感知システム。
- 前記複数のチャネルが、2〜15個のチャネルである、請求項1〜20のいずれか記載の流体流感知システム。
- 前記ハウジングが、前記流体採集装置の前記近位端と前記遠位端との間に平坦面を備える、請求項1〜21のいずれかに記載の流体流感知システム。
- 前記ハウジングが、前記流体採集装置の前記近位端と前記遠位端との間に湾曲面を備える、請求項1〜21のいずれかに記載の流体流感知システム。
- 前記リザーバの表面、複数のチャネル、液体採集領域、またはこれらの組み合わせが、疎水性材料を含む、請求項1〜23のいずれかに記載の流体流感知システム。
- 前記疎水性材料が、プラズマ処理によって前記表面上にコーティングされている、請求項24に記載の流体流感知システム。
- 前記疎水性材料が、155°以上の水接触角を有する、請求項24または請求項25に記載の流体流感知システム。
- 前記リザーバの表面、複数のチャネル、液体採集領域、またはこれらの組み合わせが、ポリテトラフルオロエチレン(PTFE)を含む、請求項1〜23のいずれかに記載の流体流感知システム。
- 前記ハウジングが、プラスチック材料を含む、請求項1〜27のいずれかに記載の流体流感知システム。
- 前記ハウジングが、透明材料を含む、請求項1〜28のいずれかに記載の流体流感知システム。
- 前記ケーシングが、前記複数のセンサの前記視野内にプラスチック材料の薄層を備える、請求項1〜29のいずれかに記載の流体流感知システム。
- 前記薄層が、最大5mmの厚さを有する、請求項30に記載の流体流感知システム。
- 前記プラスチック材料が、ポリ塩化ビニル、ポリカーボネート、ポリスチレン、ポリエステルフィルム、またはこれらの組み合わせを含む、請求項30または請求項31に記載の流体流感知システム。
- 前記ケーシングが、前記複数のセンサの前記視野内に1つ以上の窓を備える、請求項1〜29のいずれかに記載の流体流感知システム。
- 前記1つ以上の窓が、3000cm −1 〜4000cm −1 の波数の赤外線に対して透過性である、請求項33に記載の流体流感知システム。
- 前記1つ以上の窓が、0.1mm〜5mmの厚さを有する、請求項33または請求項34に記載の流体流感知システム。
- 前記1つ以上の窓が、ポリ塩化ビニル、ポリカーボネート、高密度ポリエチレン、ポリスチレン、またはこれらの組み合わせを含む、請求項33〜35のいずれかに記載の流体流感知システム。
- 前記感知装置が、光源をさらに備える、請求項1〜36のいずれかに記載の流体流感知システム。
- 前記複数のセンサが、2つのセンサである、請求項1〜37のいずれかに記載の流体流感知システム。
- 前記複数のセンサのうちの1つ以上が、赤外線センサである、請求項1〜38のいずれかに記載の流体流感知システム。
- 前記複数のセンサにおける1つのセンサが、前記複数のセンサにおける第2のセンサから0.5cm〜10cmに位置付けられる、請求項1〜39のいずれかに記載の流体流感知システム。
- 前記陰圧源によって加えられた陰圧の量を制御するように構成されたコントローラをさらに備える、請求項1〜40のいずれかに記載の流体流感知システム。
- 前記感知装置が、液柱が前記検出導管を通過するときに前記複数のセンサによって採取された前記液柱の測定値に対応する前記液柱の1つ以上のパラメータを表示するためのディスプレイをさらに含む、請求項1〜41のいずれかに記載の流体流感知システム。
- 前記感知装置が、電源をさらに備える、請求項1〜42のいずれかに記載の流体流感知システム。
- 前記感知装置が、電源を備えず、前記感知装置に接続された外部ユニットによって前記感知装置に電力が供給される、請求項1〜42のいずれかに記載の流体流感知システム。
- 流体流感知システムの作動方法であって、
前記流体流感知システムは、
i)流体採集装置であって、前記流体採集装置の近位端に位置する入口と、前記流体採集装置の遠位端に位置する出口とを有するハウジングを備え、前記ハウジングの内部が、リザーバと、複数のチャネルを画定する複数のチャネル分割器と、液体採集領域とを備え、前記ハウジングが、前記ハウジングの内部を通って前記入口と前記出口とを接続する1つ以上の流体通路を備え、前記リザーバ、前記複数のチャネル、および前記液体採集領域が、前記ハウジング内の1つ以上の流体通路内で流体連通している、流体採集装置と、
ii)入口および出口を備えるキャニスターであって、前記キャニスターの前記入口が、検出導管を介して前記ハウジングの前記出口と流体連通している、キャニスターと、
iii)入口を有するケーシング、陰圧源、および複数のセンサを備える感知装置であって、前記ケーシングの前記入口が、陰圧導管を介して前記キャニスターの前記出口と流体連通しており、前記複数のセンサが、前記ケーシングの外側に位置しており前記検出導管を通過する液柱が該複数のセンサの視野内にあるように前記ケーシング内に位置している、感知装置と、を含んでおり、
a)前記流体採集装置の前記入口を通して、かつ前記ハウジングの前記1つ以上の流体通路に沿って液体および空気の流体混合物を引き込むように、前記キャニスターを介して前記陰圧源が陰圧を前記流体採集装置に加え、前記流体混合物の空気がチャネルを通過するのと同時に、前記複数のチャネルが前記流体混合物の液体が蓄積するまで、前記流体混合物の前記液体が前記複数のチャネルに蓄積することと、
b)前記複数のチャネルが前記蓄積された流体で塞がれたときに、前記陰圧源が、前記集められた流体を液体のスラグとして前記液体採集領域に引き込むことと、
c)前記陰圧源が、前記液体採集領域から、前記ハウジングの前記出口を通って、かつ前記検出導管を通って前記スラグを引き込むことと、
d)前記複数のセンサが前記検出導管を通る前記スラグの通過を検出することと、を含む、方法。 - 前記感知装置が、前記スラグの先頭部が前記複数のセンサのそれぞれに到達するまでの時間を連続的に検出し、前記スラグの後尾部が前記複数のセンサのそれぞれに到達するのにかかる時間を連続的に検出する、請求項45に記載の方法。
- 前記感知装置が、前記複数のセンサを通過する前記スラグの前記先頭部と前記後尾部との間の時間遅延を比較して、前記スラグの速度および長さを算出することをさらに含む、請求項46に記載の方法。
- 前記感知装置が、前記流体採集装置からの前記流体混合物の流れの速度を算出することをさらに含む、請求項47に記載の方法。
- 前記流体採集装置の前記入口が、創傷導管を介して患者の創傷部位に接続され、前記流体採集装置の前記入口を通して引き込まれる前記流体混合物が、前記患者の前記創傷部位から引き込まれる流体である、請求項45〜48のいずれかに記載の方法。
- 前記流体採集装置が、方向に依存せずに前記患者の前記創傷部位に接続される、請求項49に記載の方法。
- 前記検出導管が、0.5mm〜5mmの内径を有する、請求項45〜50のいずれかに記載の方法。
- 加えられた前記陰圧が、大気圧よりも80〜125mmHg低い、請求項45〜51のいずれかに記載の方法。
- 前記スラグの体積が、10〜200μLである、請求項45〜52のいずれかに記載の方法。
- 前記スラグの長さが、3mm〜100mmである、請求項45〜53のいずれかに記載の方法。
- 前記流体混合物が、5体積%未満の空気を含む、請求項45〜54のいずれかに記載の方法。
- 前記流体混合物が、5体積%を超える空気を含む、請求項45〜54のいずれかに記載の方法。
- 前記流体採集装置に提供される前記流体混合物が、1体積%未満の液体を含む、請求項45〜54のいずれかに記載の方法。
- 前記流体採集装置に提供される前記流体混合物が、1体積%を超える液体を含む、請求項45〜54のいずれかに記載の方法。
- 前記流体混合物が、包帯で密封された患者の創傷部位からの滲出液であり、前記流体混合物の液体および空気の組成が、前記患者からの滲出液の流速、前記包帯中への空気の漏出速度、またはこれらの組み合わせに依存する、請求項55〜58のいずれかに記載の方法。
- 前記流体採集装置が、前記キャニスターと一体である、請求項45〜59のいずれかに記載の方法。
- 前記陰圧源が、ダイヤフラムポンプを含む、請求項45〜60のいずれかに記載の方法。
- 前記陰圧導管の少なくとも一部が、コネクタ内に収容されている、請求項45〜61のいずれかに記載の方法。
- 前記コネクタが、電源を含む、請求項62に記載の方法。
- 前記検出導管が、3000cm −1 〜4000cm −1 の波数の赤外線に対して透過性の材料を含む、請求項45〜63のいずれかに記載の方法。
- 前記検出導管が、0.1mm〜5mmの厚さを有する材料を含む、請求項45〜64のいずれかに記載の方法。
- 前記検出導管が、ポリ塩化ビニル、ポリカーボネート、高密度ポリエチレン、ポリスチレン、またはこれらの組み合わせを含む、請求項45〜65のいずれかに記載の方法。
- 前記複数のチャネルが、10μL〜200μLの液体を蓄積するように構成されている、請求項45〜66のいずれかに記載の方法。
- 前記感知装置の前記ケーシング内に位置付けられた圧力センサが、前記陰圧導管内の圧力を感知することをさらに含む、請求項45〜67のいずれかに記載の方法。
- 前記陰圧源からの陰圧の付加が、前記陰圧導管内で所定の圧力を維持するように調節される、請求項68に記載の方法。
- 前記流体採集装置が、先細になっており、前記流体採集装置の近位端が、前記流体採集装置の前記遠位端の幅よりも大きい幅を有する、請求項45〜69のいずれかに記載の方法。
- 前記流体採集装置の前記近位端の幅が、前記流体採集装置の前記遠位端の幅の少なくとも5倍である、請求項70に記載の方法。
- 前記液体採集領域の近位端の幅が、1mm〜8mmである、請求項45〜71のいずれかに記載の方法。
- 前記液体採集領域の遠位端の幅が、0.5〜7mmである、請求項72に記載の方法。
- 前記複数のチャネル分割器のうちの1つ以上の長さが、2mm〜50mmである、請求項45〜73のいずれかに記載の方法。
- 前記ハウジングの内部の高さが、0.1mm〜5mmである、請求項45〜74のいずれかに記載の方法。
- 前記複数のチャネルのうちの1つ以上の幅が、0.1mm〜5mmである、請求項45〜75のいずれかに記載の方法。
- 前記複数のチャネルが、2〜15個のチャネルである、請求項45〜76のいずれかに記載の方法。
- 前記ハウジングが、前記流体採集装置の前記近位端と前記遠位端との間に平坦面を備える、請求項45〜77のいずれかに記載の方法。
- 前記ハウジングが、前記流体採集装置の前記近位端と前記遠位端との間に湾曲面を備える、請求項45〜77のいずれかに記載の方法。
- 前記リザーバの表面、複数のチャネル、液体採集領域、またはこれらの組み合わせが、疎水性材料を含む、請求項45〜79のいずれかに記載の方法。
- 前記疎水性材料が、プラズマ処理によって前記表面上にコーティングされている、請求項80に記載の方法。
- 前記疎水性材料が、155°以上の水接触角を有する、請求項80または請求項81に記載の方法。
- 前記リザーバの表面、複数のチャネル、液体採集領域、またはこれらの組み合わせが、ポリテトラフルオロエチレン(PTFE)を含む、請求項45〜79のいずれかに記載の方法。
- 前記ハウジングが、プラスチック材料を含む、請求項45〜83のいずれかに記載の方法。
- 前記ハウジングが、透明材料を含む、請求項45〜84のいずれかに記載の方法。
- 前記ケーシングが、前記複数のセンサの前記視野内にプラスチック材料の薄層を備える、請求項45〜85のいずれかに記載の方法。
- 前記薄層が、最大5mmの厚さを有する、請求項86に記載の方法。
- 前記プラスチック材料が、ポリ塩化ビニル、ポリカーボネート、ポリスチレン、ポリエステルフィルム、またはこれらの組み合わせを含む、請求項86または請求項87に記載の方法。
- 前記ケーシングが、前記複数のセンサの前記視野内に1つ以上の窓を備える、請求項45〜85のいずれかに記載の方法。
- 前記1つ以上の窓が、3000cm −1 〜4000cm −1 の波数の赤外線に対して透過性である、請求項89に記載の方法。
- 前記1つ以上の窓が、0.1mm〜5mmの厚さを有する、請求項89または請求項90に記載の方法。
- 前記1つ以上の窓が、ポリ塩化ビニル、ポリカーボネート、高密度ポリエチレン、ポリスチレン、またはこれらの組み合わせを含む、請求項89〜91のいずれかに記載の方法。
- 前記感知装置が、光源であって、前記スラグが前記光源の経路内にあるように前記ケーシングの内部に位置する光源をさらに備える、請求項45〜92のいずれかに記載の方法。
- 前記複数のセンサが、2つのセンサである、請求項45〜93のいずれかに記載の方法。
- 前記複数のセンサのうちの1つ以上が、赤外線センサである、請求項45〜94のいずれかに記載の方法。
- 前記複数のセンサにおける1つのセンサが、前記複数のセンサにおける第2のセンサから0.5cm〜10cmに位置付けられる、請求項45〜95のいずれかに記載の方法。
- 圧力センサが、圧力センサ導管の第1の端部の圧力を測定することによって創傷環境の圧力を測定することをさらに含み、前記圧力センサ導管の第1の端部が、前記ケーシング内に位置付けられ、前記圧力センサ導管の第2の端部が、前記創傷環境に位置付けられる、請求項45〜96のいずれかに記載の方法。
- 前記感知装置が、前記陰圧源によって加えられた陰圧の量を制御するように構成されたコントローラをさらに備える、請求項45〜97のいずれかに記載の方法。
- 前記コントローラが、圧力の測定値に応答して前記陰圧源によって加えられた陰圧の量を制御する、請求項98に記載の方法。
- 前記感知装置が、前記複数のセンサによって採取された前記スラグの測定値に対応する前記スラグの1つ以上のパラメータを表示するためのディスプレイをさらに備える、請求項45〜99のいずれかに記載の方法。
- 前記感知装置が、光源をさらに備える、請求項45〜100のいずれかに記載の方法。
- 前記感知装置が、電源を備えず、前記感知装置に接続された外部ユニットによって前記感知装置に電力が供給される、請求項45〜100のいずれかに記載の方法。
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| CN111601545B (zh) | 2017-11-09 | 2024-05-07 | 康沃特克科技公司 | 造口术监测系统和方法 |
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| US11452808B2 (en) | 2022-09-27 |
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| AU2017292028A1 (en) | 2019-01-24 |
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