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    • 3. 发明授权
    • Subcutaneous peritoneal injection catheter
    • 皮下腹腔注射导管
    • US4405305A
    • 1983-09-20
    • US235185
    • 1981-02-17
    • Robert L. StephenCarl KablitzBarry K. HanoverStephen C. JacobsenJeffrey J. Harrow
    • Robert L. StephenCarl KablitzBarry K. HanoverStephen C. JacobsenJeffrey J. Harrow
    • A61M39/02A61M25/00
    • A61M39/0208
    • A novel implantable, peritoneal injection catheter apparatus and method, the apparatus including an open top, fluid-receiving reservoir mounted to one end of a hollow stem and a penetrable membrane covering the open top of the receiving reservoir. The hollow stem is configurated to extend into the peritoneal cavity and includes a retaining flange system for retaining the hollow stem in fluid communication with the peritoneal cavity. The penetrable membrane serves as an injection site for inserting a hollow needle into the receiving reservoir. The penetrable membrane also includes a dome configuration that may be depressed to expel injection fluids from the reservoir into the peritoneal cavity. A substantial portion of the injection catheter is covered with a velour coating to accomodate tissue ingrowth for further securement of the catheter in the tissue of the abdominal wall.
    • 一种新颖的可植入式腹膜注射导管装置和方法,该装置包括安装在中空杆的一端的开放式顶部流体接收容器和覆盖接收容器的敞开顶部的可穿透膜。 空心杆构造成延伸到腹膜腔中,并且包括用于保持中空杆与腹膜腔流体连通的保持凸缘系统。 可穿透膜用作将中空针插入接收容器的注射部位。 可渗透膜还包括可以被压下以将注射流体从储存器排出到腹膜腔中的圆顶构型。 注射导管的大部分用丝绒涂层覆盖以容纳组织向内生长,以进一步将导管固定在腹壁的组织中。
    • 4. 发明授权
    • Bi-directional flow catheter with retractable trocar/valve structure
    • 双向流动导管,具有可伸缩套针/阀结构
    • US4180068A
    • 1979-12-25
    • US895858
    • 1978-04-13
    • Stephen C. JacobsenRobert L. StephenPeter Hansen
    • Stephen C. JacobsenRobert L. StephenPeter Hansen
    • A61B17/34A61M1/00A61M5/158A61M25/00A61M25/06A61M5/00
    • A61M25/0029A61B17/34A61M25/0032A61M25/0606A61M5/1582A61B17/3474A61B2217/005A61M2025/0031A61M2025/0034A61M25/0023A61M25/007
    • A bi-directional flow catheter for insertion into the body of a patient for the simultaneous introduction into and withdrawal therefrom of fluid. The catheter includes a primary tube having open distal and proximal ends, and a pair of branching tubes, each of which branch from a different side of the primary tube. The primary tube also has an opening in one side thereof to allow introduction of fluid. An elongate trocar/valve member is disposed in the primary tube and is movable longitudinally therein between an insert position and a flow position. One end of the trocar/valve member tapers to a cutting edge which protrudes from the opening in the distal end of the primary tube when the member is in the insert position. The trocar/valve member is formed to prevent communication between the side opening and the opening in the distal end of the primary tube, and to cover the passageways between the primary tube and respective ones of the branching tubes when the member is in the insert position. When the member is in the flow position, the cutting end thereof is withdrawn from the distal opening and communication is allowed between the side opening and one of the branching tubes and between the distal opening and the other of the branching tubes to thereby allow simultaneous introduction of fluid into and withdrawal of fluid from the body of a patient.
    • 一种双向流动导管,用于插入到患者的身体中以同时引入和从中抽出流体。 导管包括具有开放的远端和近端的主管和一对分支管,每个分支管从主管的不同侧分支。 主管还在其一侧上具有开口以允许引入流体。 细长的套管针/阀构件设置在主管中并且可在插入位置和流动位置之间纵向移动。 套管针/阀构件的一端在构件处于插入位置时从主管远端的开口突出的切削刃逐渐变细。 套管针/阀构件被形成为防止侧开口与主管的远端中的开口之间的连通,并且当构件处于插入位置时,覆盖主管和分支管中的相应通道之间的通道 。 当构件处于流动位置时,其切割端从远端开口退出,并且允许在侧开口和一个分支管之间以及远端开口和另一分支管之间进行连通,从而允许同时引入 的流体从患者的身体进入和从体液中排出。
    • 7. 发明授权
    • Methods and apparatus for iontophoresis application of medicaments at a
controlled ph through ion exchange
    • 用于通过离子交换在受控ph中应用药物的离子电渗疗法的方法和装置
    • US4915685A
    • 1990-04-10
    • US64769
    • 1987-06-19
    • Tomasz J. PetelenzStephen C. JacobsenRobert L. StephenJiri Janata
    • Tomasz J. PetelenzStephen C. JacobsenRobert L. StephenJiri Janata
    • A61N1/30
    • A61N1/0432A61N1/0448
    • Methods and apparatus for administering known quantities of medicaments by iontophoresis, while avoiding burns caused by extremes in the pH of the medicament medium during passage of an electric current, are disclosed. It is known that as iontophoresis progresses in conventional iontophoresis systems, the electrolysis of water occurs to produce hydrogen or hydroxyl ions at the interface of the electrode and medicament medium. Since these ions are highly mobile, they are transported directly into the skin of a patient in preference to the larger medicament ions. Thus, extreme changes in pH are experienced which result in burns due to the acidificaion or alkalinization of the medicament medium and passage of electric current through the skin. In addition, the efficiency of iontophoresis decreases over time. The present invention avoids extremes in pH by removing the hydrogen or hydroxyl ions which are created during iontophoresis and creates conditions for constant delivery over prolonged periods of time.In the present invention, the medicament ions are attached to an ion exchange matrix, such as an ion exchange resin. When the medicament leaves the ion exchange matrix, the vacated active site is filled by the produced electrolysis products, thereby allowing iontophoresis to progress at a relatively constant pH.
    • 公开了通过离子电渗法施用已知量的药物的方法和装置,同时避免了在电流通过过程中由药物介质的pH极端引起的烧伤。 众所周知,在常规离子电渗系统中离子电渗进行时,发生电解水以在电极和药物介质的界面产生氢或羟基离子。 由于这些离子是高度移动的,所以它们优先于较大的药物离子直接转运到患者的皮肤中。 因此,经历了pH的极端变化,其由于药物介质的酸化或碱化以及电流通过皮肤而导致燃烧。 此外,离子电渗疗法的效率随时间而降低。 本发明通过除去在离子电渗疗法期间产生的氢或羟基离子来避免pH值的极端,并且产生在长时间内恒定输送的条件。 在本发明中,药物离子连接到离子交换基质如离子交换树脂上。 当药物离开离子交换基质时,所产生的电解产物填充空位的活性位点,从而允许离子电渗在相对恒定的pH下进行。
    • 8. 发明授权
    • Flow-through methods and apparatus for iontophoresis application of
medicaments at a controlled pH
    • 用于离子电渗疗法的流通方法和装置在受控pH下应用药物
    • US4886489A
    • 1989-12-12
    • US64813
    • 1987-06-19
    • Stephen C. JacobsenTomasz J. PetelenzRobert L. Stephen
    • Stephen C. JacobsenTomasz J. PetelenzRobert L. Stephen
    • A61M35/00A61N1/04A61N1/30
    • A61N1/0432A61N1/0448
    • Methods and apparatus for administering known quantities of medicaments by iontophoresis, while avoiding burns caused by extremes in the pH of the medicament medium during passage of an electric current, are disclosed. It is known that as iontophoresis progresses in conventional iontophoresis systems, the electrolysis of water occurs to produce hydrogen or hydroxyl ions at the interface of the electrode and medicament medium. Since these ions are highly mobile, they are transported directly into the skin of a patient in preference to the larger medicament ions. Thus, extreme changes in pH are experienced which result in burns due to the acidification or alkalinization of the medicament medium and passage of electric current through the skin. In addition, the efficiency of iontophoresis decreases over time. The present invention avoids extremes in pH by removing the hydrogen or hydroxyl ions which are created during iontophoresis and creates conditions for constant delivery over prolonged periods of time.In the present invention, the medicament medium adjacent the patient is periodically or constantly replaced by adding fresh medicament medium which is at the original pH. The present invention also discloses a flow-through electrode which allows new solution to constantly flow into the iontophoresis area.
    • 公开了通过离子电渗法施用已知量的药物的方法和装置,同时避免了在电流通过过程中由药物介质的pH极端引起的烧伤。 众所周知,在常规离子电渗系统中离子电渗进行时,发生电解水以在电极和药物介质的界面产生氢或羟基离子。 由于这些离子是高度移动的,所以它们优先于较大的药物离子直接转运到患者的皮肤中。 因此,经历了pH的极端变化,其由于药物介质的酸化或碱化以及电流通过皮肤而导致燃烧。 此外,离子电渗疗法的效率随时间而降低。 本发明通过除去在离子电渗疗法期间产生的氢或羟基离子来避免pH值的极端,并且产生在长时间内恒定输送的条件。 在本发明中,通过添加处于原始pH值的新鲜药物培养基来定期或不断地替换邻近患者的药物介质。 本发明还公开了一种允许新溶液不断流入离子电渗区的流通电极。