JP2006055588A - Blood leakage sensing sensor for withdrawal of needle in dialysis - Google Patents

Blood leakage sensing sensor for withdrawal of needle in dialysis

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JP2006055588A
JP2006055588A JP2004268972A JP2004268972A JP2006055588A JP 2006055588 A JP2006055588 A JP 2006055588A JP 2004268972 A JP2004268972 A JP 2004268972A JP 2004268972 A JP2004268972 A JP 2004268972A JP 2006055588 A JP2006055588 A JP 2006055588A
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sensor
circuit
dialysis
needle
blood
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Tadashi Oshima
Tokuji Sunaga
匡 大島
徳治 須永
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Tadashi Oshima
Tokuji Sunaga
匡 大島
徳治 須永
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<P>PROBLEM TO BE SOLVED: To provide a blood leakage sensing sensor for withdrawal of a needle in dialysis which prevents an accident of the blood leakage around the needle for the dialysis caused by withdrawal of the needle from a human body or a disconnection of the needle for dialysis and a tube during returning the blood purified through an artificial kidney in an artificial dialysis apparatus. <P>SOLUTION: This sensor is composed of a generally open state circuit part formed on a copper-clad laminated plate, a circuit terminal arranged at the end of the circuit part and a sensor body of the sensor, in which the circuit part is arranged near the needle for dialysis and connected to the sensor body of the sensor at the circuit terminal. The circuit closes when a gauze, or the like, covering the surface of the circuit become wet by the leaked blood and turns on electricity to start an alarm by the sensor body of the sensor. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、人工腎臓で人体の血液の透析を行う際に透析用の注射針(以後、透析針と称す)の近傍で発生する流血事故を未然に防止するための透析抜針漏血感知センサーに関する。 The present invention, dialysis needle removal blood leakage detecting sensor for preventing bloody accidents that occur in the vicinity of the injection needle for dialysis in performing dialysis of the human blood with artificial kidney (hereinafter referred to as dialysis needle) on.

腎不全や中毒の患者の治療で行われる血液透析は通常は体外循環方式であり、患者の身体から抜き出した血液を別に配した人工腎臓に通し、同時に該人工腎臓に別の装置で作製された透析液を通過させ、人工腎臓の中で血液と透析液とをプレート状や中空糸状の透析膜を介して接触させることにより、血液中の老廃物である尿素、クレアチン、尿酸などの低分子代謝物を透析液中に拡散させ、同時に水分を限外濾過によってとり除くことにより血液が浄化される仕組みとなっている。 Hemodialysis carried out by treatment of renal failure or poisoning of the patient is usually a extracorporeal circulation system, through the artificial kidney which arranged separately drawn blood from a patient's body, made by another device in the artificial kidney simultaneously the dialysate is passed through, by contacting the blood and the dialysis fluid through the dialysis membrane of the plate-shaped or hollow fiber in the artificial kidney, urea is a waste product in the blood, creatine, low molecular metabolism such as uric acid diffuse objects into the dialysate, it has a mechanism which blood is purified by removing the water by ultrafiltration at the same time.

老廃物や余分な水分を含む血液を人体から取り出す時および取り出されて人工腎臓で浄化された血液を再び人体に戻す時には血液透析室にてベッドに横たわった患者に打たれた二本の透析針を経由して行われる。 Two dialysis needles struck the patient lying in bed in hemodialysis chamber when the blood containing wastes and excess moisture and retrieved when removed from the body back to the body to purify blood again in an artificial kidney It is performed via the. 一本は人体から血液を取り出して人工腎臓に送るための透析針(以後、透析針1と称する)であり、もう一本は人工腎臓で浄化された血液を人体に戻すための透析針(以後、透析針2と称する)である。 Single dialysis needle (hereinafter, dialysis needle 1 hereinafter) to send to the artificial kidney removed blood from a human body and is, dialysis needles for the other one to return the is purified by artificial kidney blood to the human body (hereinafter a dialysis needle 2 hereinafter). 血液透析には毎分200ml以上の血液を取り出す必要があるが、末梢血管では十分な量の血液を取り出すことが困難である。 The hemodialysis is necessary to take out every minute 200ml or more blood but it is difficult to take out a sufficient amount of blood in peripheral blood vessels. そのために、シャントと呼ばれる動脈と静脈とを連結する手術が行われ、静脈に動脈の血液が流れ込み、静脈が太くなって透析針が刺しやすくなり、かつ血液量が確保される手術が行われる(例えば、特許文献1および特許文献2参照。)。 Therefore, performed surgery for connecting the arterial and venous called shunt, vein flow arterial blood, venous tends stab is thickened by dialysis needle, and is performed surgery blood volume is secured ( For example, refer to Patent Document 1 and Patent Document 2.).

限外濾過手段を備えた人工腎臓においては、ヘパリン注入量、血液流量、限外濾過量、静脈圧、漏血液量などの監視装置が開発され使用されている。 In the artificial kidney comprising an ultrafiltration unit, heparin injection volume, blood flow rate, ultrafiltration volume, venous pressure monitoring device, such as a leak blood volume it has been developed and used. 透析装置内のプレート状や中空糸状の透析膜を介して接触する血液と透析液との間の圧力は通常は血液の方が高く、仮に膜に損傷があると血液は透析液に入り事故に至るので、それを防ぐための血液漏れ検知器などの警報手段が知られている(例えば、特許文献1および特許文献2参照。)。 Pressure between the blood and the dialysis fluid in contact through a dialysis membrane of a plate-shaped or hollow fiber in the dialyzer is typically higher in the blood, when if there is damage to the membrane blood accident enters the dialysate since throughout, an alarm means, such as a blood leak detector to prevent it has been known (e.g., refer to Patent documents 1 and 2.).

人工透析で重大な事故に繋がる血液漏れは透析装置内だけでなく、人体から血液を取り出すために刺された透析針1および人工腎臓で浄化されて人体に血液を戻すために刺された透析針2の近傍からも発生する。 Blood leakage which could result in serious injury or death by dialysis not only the dialysis device, the dialysis needle 2 which is purified by a dialysis needle 1 and the artificial kidney was stabbed to drawing blood from a human body was stabbed to return the blood to the human body also occur from the vicinity. 一つは透析針が人体から抜け落ちることであり、あと一つは透析針と人工腎臓を結ぶ管との接続部の脱落である。 One is that the dialysis needle from falling out of the body, after one of which is dropping at the connection of the tube connecting the dialysate needle and artificial kidneys. 透析針の刺される静脈は、シャントによって動脈が流れ込んでおり、その結果、圧力も高くなっている。 Veins stabbed the dialysis needle is flowed arterial the shunt, as a result, the pressure also increases. 人体から血液を取り出す際の透析針1が抜けて、あるいは静脈血管への接続が不十分で血液が人体および透析装置の血液回路以外に出た場合には閉鎖回路である血液回路の圧力が低下すので、それを透析装置が感知して知らせる仕組みとなっている。 Missing dialysis needle 1 when extracting blood from the human body, or decrease the pressure of the blood circuit is a closed circuit when the connection is insufficient blood to the venous vessel comes in addition to the blood circuit of the human body and the dialyzer since to the dialyzer it has a mechanism to inform senses. 透析針1が抜けて静脈血管に生じる気泡を感知する気泡センサーを改良して血液流出を遮断する方法が開示されている。 Method of blocking blood flow out to improve the bubble sensor for sensing air bubbles generated dialysis needle 1 is missing the vein blood vessel is disclosed. (例えば、特許文献3参照。)。 (E.g., see Patent Document 3.).

シャント部分からの血液漏れの検出器、透析患者が無意識に透析針2を抜いてしまうことを防止するセンサーの試作、出血感知シャントカバーなど試みがなされているが人工腎臓で浄化された血液を人体に戻す透析針2が人体から抜けて外部に流出する場合、あるいは透析針2と人工腎臓をつなぐ管との接続部の脱落による血液の流失は透析針2近傍の目視確認が頼りとなる(例えば非特許文献1参照。)。 Detector blood leakage from the shunt portion, prototype sensors dialysis patients is prevented from being accidentally disconnected unintentionally dialysis needle 2, the Attempts like have been bleeding sensed shunt cover has been purified by an artificial kidney blood human outflow of blood by dialysis if needles 2 flows out exits from the body, or fall off at the connection of the tube connecting the dialysate needle 2 and an artificial kidney to return to the visual confirmation of the dialysis needle 2 vicinity is dependable (e.g. non-Patent reference 1.).

透析針2が抜けて人工腎臓で浄化された血液が透析針2付近に漏れる場合には当該付近が流出した血液で人体の部分が濡れる、と言う現象が発生する。 Dialysis needle 2 parts of the human body in blood near the flows out is wet if the blood is purified in an artificial kidney leaks around dialysis needle 2 missing phenomenon called occurs. この現象は、状況は異なるが乳児もしくは寝たきりの高齢者などに使用されるおしめで排尿により身体が濡れた時と本質的には類似であり、この場合には付近の人にブザーなどで知らせるセンサーおよび警報装置が開示され、商品開発がされている。 Sensor This phenomenon, the situation is different, but similar in nature and when wet the body by urination in the diaper to be used for, such as infants or bedridden elderly, to inform the people of the vicinity in this case, buzzer, etc. and a warning device is disclosed, have been the product development. これらの装置は尿が漏れる付近に一対の異なる金属からなる電極と、この一対の電極間に生じた電位差による電流を増幅し、増幅された電流に基づきおしめの濡れを感知する方法、あるいは平板状の可撓性吸水基材の片面に金属箔からなる正電極を、他面に金属箔からなる負電極を配設し、両電極間に警報器を接続して可撓性吸水基材の吸水により警報器を作動されるものである。 An electrode including a pair of different metals these devices in the vicinity of the urine leakage, the method amplifies the current due to a potential difference generated between the pair of electrodes, sensing the wetting of the diaper on the basis of the amplified current or tabular, water absorption of a positive electrode comprising a metal foil on one side of the flexible water base, disposed a negative electrode made of metallic foil on the other surface, the flexible water absorbing substrate by connecting the alarm between the electrodes it is those operating the alarm by. これらの装置は電極として金属を用いることから使い捨てができない欠点を改良して銅張積層板で作成した回路と、回路端と接続したセンサーからなり、回路は通常、開状態にあり、おしめが尿で濡れると閉回路となって通電してセンサーが作動するもので、回路部分を使い捨て部品として使用できる利点がある方法が開示されている(例えば、特許文献4、特許文献5および特許文献6参照。)。 A circuit created in copper-clad laminate to improve these devices can not disposable from using metal as the electrode disadvantage consists sensors connected to the circuit end, the circuit is normally in the open state, diaper urine When wetted with energized becomes a closed circuit in which the sensor is activated, a method that can be advantageously used a circuit portion as a disposable component is disclosed (e.g., Patent Document 4, Patent Document 5 and Patent Document 6 .).

実用新案公報 昭63−27280 Utility Model Publication Sho 63-27280 特開平9−168586 JP-A-9-168586 実用新案登録第3081892号 Utility Model Registration No. 3081892 特開平6−178789 JP-A-6-178789 特開平5−180800 JP-A-5-180800 特開平10−272153 JP-A-10-272153

人工透析で血液の流失は、排尿による身体の濡れとは根本的にことなり、人命に関わる大事故につながる。 Outflow of blood in artificial dialysis, fundamentally different from the wetting of the body by urination, leading to human life large accident. 上述の血液透析での血液漏れを検知する方法は何れも人体から血液を取り出す透析針1が抜けることによる事故を検知する方法が大部分であり、人工腎臓から浄化された血液を人体に戻すための透析針2が抜ける、あるいは透析針2と人工腎臓を接続する管から透析針2が脱落することによる血液の流失を未然に、あるいは初期に発見して事故を未然に防止するセンサーはない。 Method of detecting an accident caused by dialysis needle 1 comes off method for detecting blood leakage in the above-mentioned hemodialysis taking out blood from the human body both is largely for returning the purified blood from the artificial kidney in a human body exit dialysis needle 2 is, or in advance of the outflow of blood by dialysis needle 2 from falling off the pipe connecting the dialysis needle 2 and the artificial kidney no sensor to prevent accidents or to discover early. また、排尿による警報センサーは人体環境に対する配慮は取られているが人身事故を想定したものではない。 In addition, an alarm sensor by urination is consideration has been taken to the human body environment is not intended that assumes the injury.

発明者らはこれまでに開示されている透析針の抜け防止方法およびセンサー、あるいは比較的類似の技術である、おしめの濡れセンサーなどを参考にして鋭意研究の結果、透析針2が抜け、あるいは透析針2と管との脱落で血液が流失したことを即座に感知し、ブザーなどで医師、看護師などに確実に知らせることが可能であり、かつ、比較的安価な透析抜針防止センサーの発見に至った。 We prevention method and sensor missing dialysis needles disclosed so far, or is relatively similar techniques, diaper wetting sensors etc. of intensive research with reference result of the omission dialysis needle 2, or that blood was destroyed by dropping the dialysis needle 2 and the tube sensing in real doctor buzzer, it is possible to inform surely the nurses, and relatively inexpensive dialysis needle removal prevention sensor It led to the discovery.

この発明は、透析針2の近傍で透析針2が患者の無意識の作動で抜け、あるいは管から脱落して人工腎臓からポンプで送られてくる血液の流出を検知するための回路部分と、回路部分の端部で接続したセンサー本体からなる。 The invention includes a circuit portion for dialysis needle 2 in the vicinity of the dialysis needle 2 for detecting the flow of blood sent by a pump from an artificial kidney off from omission in unconscious operation of the patient, or tubes, circuit consisting sensor itself connected at the end portion. 回路部分は銅張積層板をエッチングして作成した櫛形回路からなり、回路の一端に端子が形成されている。 Circuit portion consists comb circuit created by etching a copper-clad laminate, which terminal is formed at one end of the circuit. 回路は通常は開状態にあり、流失した血液で回路部分が濡れると閉状態となって通電される。 Circuits typically available in an open state, the circuit part outflow blood is energized in the closed state when wet. 回路部分を透析針2の近傍に粘着テープなどで固定し、接点に通常の電気配線を用いてセンサー本体を接続して使用する。 Circuit portions adhesive tape fixed with like in the vicinity of the dialysis needle 2, used to connect the sensor body using conventional electrical wiring to the contacts. 血液の流失が有った場合にはセンサー本体のブザーで医師または看護師に知らせる。 If the outflow of blood there was inform your doctor or nurse at the buzzer of the sensor body. あるいは、別に配線することによって透析抜針防止センサーからの信号で透析装置の血液送り出しポンプを停止させることも可能である。 Alternatively, it is also possible to stop the blood feed pump of the dialysis apparatus by a signal from the dialysis needle removal prevention sensor by wires separately. この回路部分はエチレンオキシド滅菌などの殺菌処理がされてポリエチレンなどの袋に入れて保管されており、使用時に袋から取り出してセンサー本体に接続して使用される。 This circuit portion is stored in the bag, such as polyethylene are sterilization processes such as ethylene oxide sterilization is used in removing it from the bag and connected to the sensor body at the time of use. また、回路部分は比較的安価であり、使い捨て部品としての使用も可能である。 Further, the circuit portion is relatively inexpensive, it is also possible to use as a disposable part.

この発明の透析抜針漏血感知センサーは、これまで離れた場所での検知が困難で、殆ど目視確認であった人工腎臓からポンプで人体に戻される血液の人体との接点である透析針2が抜け、あるいは管から脱落して血液が流失する事故を、その現場で監視して居なくとも知ることが可能とする。 Dialysis needle removal blood leakage detecting sensor of this invention is difficult to detect at remote locations far, dialysis needle 2 is a point of contact with human blood is returned to the human body by a pump from the artificial kidney was almost visual check It is missing, or an accident that washed away the blood to fall off from the tube, and can be known without residence monitored by the scene. また、当該センサーは衛生面および経済面に配慮された装置であり、発明の効果が大きい。 Further, the sensor is a device that is friendly hygiene and economic, large effect of the invention.

この発明の透析抜針漏血感知センサーは、透析針2の近傍に取り付ける回路部品と回路部品の端部の接点、接点に接続するセンサー本体からなる。 Dialysis needle removal blood leakage detecting sensor of this invention, the contact end of the circuit component and the circuit component to be attached to the vicinity of the dialysis needle 2 consists of a sensor main body to be connected to the contact. 図1に患者の腕に部分に回路部品が取り付けられた状態の写真、図2に回路部品を示す。 Pictures state circuit components mounted on the portion on the arm of the patient in Fig. 1 shows a circuit component in FIG. 回路部品は銅張積層板をエッチングして回路を作成した物であり、エチレンオキシド滅菌処理がされポリエチレンなどの袋に保管されている。 Circuit component is obtained by creating a circuit by etching the copper-clad laminate, is stored in a bag, such as polyethylene are ethylene oxide sterilization. 回路部品を透析針2の近傍に粘着テープで固定して表面をガーゼなどの吸収性の布で覆い、更にその上を必要があればポリエチレンフイルムなどのフイルムで覆う。 The surface to secure the circuit components in the adhesive tape in the vicinity of the dialysis needle 2 is covered with an absorbent cloth such as gauze, further covered with a film such as polyethylene film, if necessary over the. 回路部品の端部の接点をセンサー本体と接続する。 The contact end of the circuit components connected to the sensor body. 端子部分は接続を良くするために金メッキされる。 Terminal portion is plated with gold in order to improve the connection.

回路は開回路状態となっており、透析針2が抜けて血液が漏れ、血液を吸収したガーゼなどの吸収性材料の助けなどがあって回路表面を濡らすと回路は閉回路状態となって通電してセンサーの警報機が鳴作動する。 Circuit has become an open circuit condition, dialysis needle 2 missing leak blood circuit when wetting the surface of the circuit if there is such help of absorbent material such as gauze to absorb blood becomes closed circuit state energized sensor alarm is activated ringing in. 回路部品は、使用後にはセンサー本体から取り外して滅菌処理を行い、再度使用することができる。 Circuitry performs sterilization removed from the sensor body after use, can be used again. 又、使い捨てにすることも可能である。 In addition, it is also possible to disposable. 図3には幾つかの回路のパターンを示す。 It shows a pattern of several circuits in FIG. 回路部品は患者の腕の形状などによって適した回路パターンおよび大きさ、厚みなどの形状を選択すくことができる。 Circuit parts can be easier selection circuit pattern and size suitable such as by the shape of the patient's arm, a shape, such as thickness.

この発明の透析抜針漏血感知センサーは、図4に示す様に、回路部品で感知した血液の漏れを、センサー本体を経て透析装置に信号を送り、血液ポンプを停止して血液の流出を止める自動透析抜針漏血感知センサーとしても使用することができる。 Dialysis needle removal blood leakage detecting sensor of this invention, as shown in FIG. 4, the leakage of blood sensed by circuitry sends a signal to the dialyzer through the sensor body, the blood pump to stop outflow of blood it can also be used as an automatic dialysis needle removal blood leakage detecting sensor to stop.

透析中の血液の漏れは死に至る大事故に発展する可能性があるが、透析針、特に人工腎臓で浄化されて人体に戻る血液の人体との接点である透析針2が抜ける、あるいは抜ける状態になっていて発生した血液の漏れを比較的安価な装置で検知することが可能となり、利用価値が大きい。 State, but the leakage of blood during dialysis is likely to develop into serious accident death, dialysis needles, dialysis needle 2 exits a contact with the human body the blood back to the body is particularly purified in an artificial kidney, or exit possible to detect the leakage of blood that occur they become a relatively inexpensive apparatus and becomes, larger utility value.

回路部品を腕に取り付けた状態を示す写真 Photograph showing the state of attaching the circuit parts in the arm 回路部品と端子を示す図面 It illustrates a circuit component and a terminal 種々の形状の回路部品を示す図面 It illustrates the circuit components of various shapes センサー本体で検知した信号を透析装置に送る図面 Drawing sending signals detected by the sensor body dialyzer

Claims (6)

  1. 血液透析の透析針が人体から抜ける、あるいは透析針が透析針と人工腎臓を結ぶ管から脱落することにより生じる透析針近傍の血液の漏れを検知するための装置であって、回路を形成した回路部品と回路部品の端部に設置された接続端子と、センサー本体とからなり、該回路は通常は開回路状態にあって血液で表面が濡らされると回路は閉回路状態となり、通電してセンサーを作動させることを特徴とする透析抜針漏血感知センサー。 Dialysis needle hemodialysis escapes from the body, or dialysis needle An apparatus for detecting leakage of dialysis needles near the blood caused by falling off from the tube connecting the dialysate needle and artificial kidney, the circuit forming the circuit parts and the circuit connection terminals that are installed at the ends of the parts consists of a sensor main body, the circuit is typically when is wetted surface with blood in the open circuit condition circuit is a closed circuit state, by energizing the sensor dialysis needle removal blood leakage detecting sensor, characterized in that to operate the.
  2. 血液透析の透析針が人体から抜ける、あるいは透析針が管から脱落することにより生じる血液の漏れを検知するための装置であって、銅張積層板をエッチングして形成された板状の回路部品を患者の皮膚に刺された透析針の近傍に設置して透析針から、あるいは透析針と人工腎臓とを結ぶ管から漏れた血液で回路が濡れて閉回路状態となり、通電してセンサーを作動させることを特徴とする、請求項1に記載の透析抜針漏血感知センサー。 Exit dialysis needle hemodialysis from the human body, or dialysis needle An apparatus for detecting blood leakage caused by falling off from the tube, which is formed by etching a copper-clad laminate plate-like circuit component from dialysis needles installed in the vicinity of the dialysis needle bites into the skin of the patient or becomes closed circuit state circuit wet leaking blood from the tube connecting the dialysate needle and artificial kidney, actuate the sensor by energizing and wherein the dialysis needle removal blood leakage detecting sensor according to claim 1.
  3. 紙・フェノール樹脂銅張積層基板、ガラス・エポキシ樹脂銅張積層基板およびポリイミドフイルム銅張積層基板などの銅張積層基板に回路を形成して作成した回路部品を殺菌処理を行い、無菌状態で密閉性の袋に保存し、使用時にセンサー本体に接続して使用することを特徴とする、請求項1または請求項2に記載の透析抜針漏血感知センサー。 Paper and phenolic resin copper clad laminate board, a glass epoxy resin copper-clad laminate substrate and a polyimide film clad laminate to form a circuit on a copper-clad laminate board circuit components created, such as a substrate subjected to sterilization treatment, sealed under aseptic conditions Save sexual bag, characterized by used in connection with the sensor body during use, dialysis needle removal blood leakage detecting sensor according to claim 1 or claim 2.
  4. 銅張積層基板に回路を形成して作成した回路部品が使い捨て部品であることを特徴とする、請求項3に記載の透析抜針漏血感知センサー。 And wherein the circuit components created by forming a circuit on a copper-clad laminate board is disposable components, dialysis needle removal blood leakage detecting sensor according to claim 3.
  5. 回路部品で検知された血液の漏れを、センサー本体を経て透析装置に信号を送り、該信号で血液輸送ポンプを停止して、血液の漏れを防ぐことを特徴とする、請求項1または請求項2または請求項3に記載の透析抜針漏血感知センサー。 Leakage of blood detected by the circuit component, sends a signal to the dialyzer through the sensor body, stop the blood transport pump in said signal, characterized in that prevent leakage of blood, according to claim 1 or claim dialysis needle removal blood leakage detecting sensor according to 2 or claim 3.
  6. 血液の漏れを検知する回路部品を取り付ける位置が、人工腎臓で浄化された血液が人体に戻る接点となる位置の透析針の近傍であること特徴とする、請求項1または請求項2または請求項3または請求項5に記載の透析抜針漏血感知センサー。 Mounting the circuit components for detecting blood leakage position, characterized that the blood that has been purified in an artificial kidney is near the dialysis needle contacts a position to return to the human body, according to claim 1 or claim 2 or claim 3 or dialysis needle removal blood leakage detecting sensor according to claim 5.
JP2004268972A 2004-08-20 2004-08-20 Blood leakage sensing sensor for withdrawal of needle in dialysis Pending JP2006055588A (en)

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US7605710B2 (en) 2006-08-18 2009-10-20 Fresenius Medical Care Holdings, Inc. Wetness sensor
US8114043B2 (en) 2008-07-25 2012-02-14 Baxter International Inc. Electromagnetic induction access disconnect sensor
WO2012020507A1 (en) 2010-08-13 2012-02-16 日本協能電子株式会社 Liquid leakage detection system
US8152751B2 (en) 2007-02-09 2012-04-10 Baxter International Inc. Acoustic access disconnection systems and methods
US8376978B2 (en) 2007-02-09 2013-02-19 Baxter International Inc. Optical access disconnection systems and methods
US8529490B2 (en) 2002-04-10 2013-09-10 Baxter International Inc. Systems and methods for dialysis access disconnection
US8708946B2 (en) 2002-04-10 2014-04-29 Baxter International Inc. Access disconnection systems using conductive contacts
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US8920356B2 (en) 2002-04-10 2014-12-30 Baxter International Inc. Conductive polymer materials and applications thereof including monitoring and providing effective therapy
US9138536B2 (en) 2008-04-01 2015-09-22 Gambro Lundia Ab Apparatus and a method for monitoring a vascular access
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US8529490B2 (en) 2002-04-10 2013-09-10 Baxter International Inc. Systems and methods for dialysis access disconnection
US8920356B2 (en) 2002-04-10 2014-12-30 Baxter International Inc. Conductive polymer materials and applications thereof including monitoring and providing effective therapy
US8708946B2 (en) 2002-04-10 2014-04-29 Baxter International Inc. Access disconnection systems using conductive contacts
US7973667B2 (en) 2006-08-18 2011-07-05 Fresenius Medical Care Holdings, Inc. Wetness sensor
US7605710B2 (en) 2006-08-18 2009-10-20 Fresenius Medical Care Holdings, Inc. Wetness sensor
US8920355B2 (en) 2007-02-09 2014-12-30 Baxter International Inc. Acoustic access disconnection systems and methods
US8376978B2 (en) 2007-02-09 2013-02-19 Baxter International Inc. Optical access disconnection systems and methods
US8603020B2 (en) 2007-02-09 2013-12-10 Baxter International Inc. Ultrasound access disconnection systems and methods
US9089654B2 (en) 2007-02-09 2015-07-28 Baxter International Inc. Acoustic access disconnection systems and methods
US8152751B2 (en) 2007-02-09 2012-04-10 Baxter International Inc. Acoustic access disconnection systems and methods
US9138528B2 (en) 2007-02-09 2015-09-22 Baxter International Inc. Acoustic access disconnection systems and methods
US9352078B2 (en) 2007-02-09 2016-05-31 Baxter International Inc. Electrical heartbeat access disconnection systems
US8795217B2 (en) 2007-02-09 2014-08-05 Baxter International Inc. Acoustic access disconnection systems and methods
US9950105B2 (en) 2007-02-09 2018-04-24 Baxter International Inc. Blood treatment and electrical blood leak detection device therefore
US9138536B2 (en) 2008-04-01 2015-09-22 Gambro Lundia Ab Apparatus and a method for monitoring a vascular access
US8114043B2 (en) 2008-07-25 2012-02-14 Baxter International Inc. Electromagnetic induction access disconnect sensor
US8632486B2 (en) 2008-07-25 2014-01-21 Baxter International Inc. Electromagnetic induction access disconnect systems
US8946501B2 (en) 2010-08-13 2015-02-03 Aqua Power System, Japan Liquid leakage detection system
JP5734296B2 (en) * 2010-08-13 2015-06-17 日本協能電子株式会社 Liquid leakage sensing system
WO2012020507A1 (en) 2010-08-13 2012-02-16 日本協能電子株式会社 Liquid leakage detection system
WO2014072532A1 (en) * 2012-11-12 2014-05-15 Digital Art International Humidity‑sensitive multi‑sensor interactive surface
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WO2016119211A1 (en) * 2015-01-30 2016-08-04 National Taipei University Of Technology Sensor patch, system, and method for detecting fluid leakage

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