WO2016116608A2 - Kathetervorrichtung, enthaltend ein ventil zur steuerung eines fluidflusses durch einen katheter - Google Patents
Kathetervorrichtung, enthaltend ein ventil zur steuerung eines fluidflusses durch einen katheter Download PDFInfo
- Publication number
- WO2016116608A2 WO2016116608A2 PCT/EP2016/051358 EP2016051358W WO2016116608A2 WO 2016116608 A2 WO2016116608 A2 WO 2016116608A2 EP 2016051358 W EP2016051358 W EP 2016051358W WO 2016116608 A2 WO2016116608 A2 WO 2016116608A2
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- WO
- WIPO (PCT)
- Prior art keywords
- valve
- catheter
- catheter device
- fluid
- drive
- Prior art date
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 66
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 230000005291 magnetic effect Effects 0.000 claims description 34
- 239000012528 membrane Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 17
- 210000002376 aorta thoracic Anatomy 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 description 15
- 230000002572 peristaltic effect Effects 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000002262 irrigation Effects 0.000 description 4
- 238000003973 irrigation Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 210000001105 femoral artery Anatomy 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 210000000709 aorta Anatomy 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
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- 238000011001 backwashing Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 210000005240 left ventricle Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
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Classifications
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- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
- A61M60/89—Valves
- A61M60/892—Active valves, i.e. actuated by an external force
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
- A61M60/82—Magnetic bearings
-
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- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M25/0026—Multi-lumen catheters with stationary elements
- A61M25/003—Multi-lumen catheters with stationary elements characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves
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- A61M25/0043—Catheters; Hollow probes characterised by structural features
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- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/1018—Balloon inflating or inflation-control devices
- A61M25/10184—Means for controlling or monitoring inflation or deflation
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- 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
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- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/13—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
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- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
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- A—HUMAN NECESSITIES
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- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
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- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/247—Positive displacement blood pumps
- A61M60/253—Positive displacement blood pumps including a displacement member directly acting on the blood
- A61M60/268—Positive displacement blood pumps including a displacement member directly acting on the blood the displacement member being flexible, e.g. membranes, diaphragms or bladders
- A61M60/279—Peristaltic pumps, e.g. roller pumps
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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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/408—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable
- A61M60/411—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor
- A61M60/414—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter
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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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/424—Details relating to driving for positive displacement blood pumps
- A61M60/438—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being mechanical
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- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/515—Regulation using real-time patient data
- A61M60/523—Regulation using real-time patient data using blood flow data, e.g. from blood flow transducers
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- A—HUMAN NECESSITIES
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- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
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- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/538—Regulation using real-time blood pump operational parameter data, e.g. motor current
- A61M60/546—Regulation using real-time blood pump operational parameter data, e.g. motor current of blood flow, e.g. by adapting rotor speed
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- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/827—Sealings between moving parts
- A61M60/829—Sealings between moving parts having a purge fluid supply
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/14—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with non-movable magnets
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- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
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- A61M39/223—Multiway valves
- A61M2039/224—Multiway valves of the slide-valve type
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- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M2039/226—Spindles or actuating means
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- A—HUMAN NECESSITIES
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- 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
- A61M2205/02—General characteristics of the apparatus characterised by a particular materials
- A61M2205/0272—Electro-active or magneto-active materials
-
- 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
- A61M2205/75—General characteristics of the apparatus with filters
- A61M2205/7545—General characteristics of the apparatus with filters for solid matter, e.g. microaggregates
Definitions
- Catheter device containing a venti! for controlling fluid flow through a catheter
- the invention is in the field of mechanics and is applicable with particular advantage in the field of medical technology.
- it deals with a valve that allows a secure blocking of fluid flow through a catheter even under different pressure conditions.
- the present invention is therefore based on the background of the prior art, the task of providing a catheter device or a valve that allows for low fluid flow rates under different pressure conditions, a safe shut-off and opening a fluid channel.
- a catheter device comprising a catheter for insertion into a living being and at least one lumen for guiding a fluid flow within a part of the catheter device and containing a valve for controlling a fluid flow, in particular by a catheter, with a valve control chamber, in which an inflow channel with a Inlet opening and a drain channel with a drain opening open, and with a controlled in the valve control chamber closure element which closes the inlet opening in at least a first position, the inlet opening in at least one second position and in at least one third position a connecting channel between the
- the coupling with a separating device for removing soiling and abrasion can be controlled from the rinsing liquid.
- a "reversal" of a separating device that is to say a device for catching / capturing abrasion, etc.
- Examples of such a separating device are explained, for example, in the parallel ECP 46 PCT (file number not yet known) filed by ECP GmbH at the same time.
- the priority of the two prior applications EP 15152201.8 and EP 15152205.9 claimed.
- the disclosure of all three patent applications in their original form is incorporated in full in the present application (“incorporation by reference”).
- the catheter has a rotatable shaft.
- This is for example flexible, in particular so flexible that it is adaptable to a curvature of a human aortic arch, that is, for example, when inserting a corresponding shaft into the femoral artery and continuing along the aorta, a pump head at the tip of the flexible shaft into the ventricle of the Heart is introduced and automatically adjusts to the curvature of the aortic arch when pushing the catheter in the direction of the ascending aorta of the catheter.
- the drive means is selected outside of the animal (ie, outside the femoral artery in the example above), the rotatable shaft travels into the femoral artery to, for example, the left ventricle for driving a pumphead positioned there
- Catheter pump (heart pump).
- the catheter has more than one lumen, wherein at least one lumen for the fluid guide in the distal direction and at least one lumen for the fluid guide in the proximal direction is executed.
- between 10 and 90 percent of the distally directed fluid flow in a first lumen may be recirculated in another lumen in the proximal direction.
- Y-flushing therefore, a fluid flow is conveyed in the distal direction, a part of the flushing fluid passes, for example, into the heart at the distal end of the catheter, and another part of the flushing fluid then exits through the respective other lumen.
- the drive device that is to say the drive which is located, for example, outside the body
- the drive device is supplied with a fluid flow in order to remove, for example, abrasion in the region of the bearings etc. from the catheter device.
- embodiments also provide that one, two, three or more valves are provided to perform, for example, more complex flushing operations or deliberate reversals of the flushing direction (for example, for cleaning a separating device).
- An embodiment provides that a plurality of valves, for example two valves, are provided, wherein the outflow of the first valve is connected to an inlet to the drive device of the catheter device and a second valve is present, wherein the inflow of the second valve with a fluid in the proximal direction Lumen of the catheter is connected.
- valves in a catheter device 100 are shown in the specific part of the description. This applies, for example, to embodiments 8, 9, 10, 11 and 12.
- valves are designed such that a valve drive of the closure element is separable, ie separable without tools from the rest of the arrangement, in particular in order to facilitate an exchange. possible and sterility too low cost to ensure even with multiple use of parts of the arrangement.
- valve drive can be done in any way.
- the drive can also be purely mechanical, it can be done electrically or inductively; Here are any drives possible that allow a professional to achieve a movement of a closure element in the first, second and / or third position.
- the application relates, inter alia, to a valve for controlling a fluid flow through a catheter, having a valve control chamber in which an inflow channel with an inflow opening and a outflow channel with an outflow opening, and with a control element which can be controlled in the valve control chamber at least one first position closes the Abfiuss- opening, in at least one second position, the inflow opening and holds in at least a third position a connecting channel between the inlet opening and the Abfiussö réelle, wherein a valve drive is provided, which optionally the closure element at least in the first, second or third position moves. In one embodiment, in the third or further valve positions, different valve gap sizes can be controlled to control a flow.
- inflow channel and outflow channel are chosen so that the inflow channel with its mouth designates the channel, which under normal or statistically most frequent conditions and pressure conditions as
- Inflow channel acts. The same applies to the Segriff drainage channel.
- Zu striuskanai each have the ability to support by the pressure difference, the closing forces and thus the tight fit of the Verschiuss stressess by the closure body closes the outlet opening at an overpressure in the inflow channel, while at an overpressure in the outflow channel Closing body closes the inlet opening.
- the closure body is held in the closed position in addition to the mechanical drive forces by the pressure difference between the valve control chamber and the respective closed channel.
- the inflow channel can act as a drain channel in certain cases and vice versa, could also simply the inflow channel as the first channel and the outflow channel are referred to as the second channel.
- the reliable seal is particularly important in those systems in which changing or long-term changing pressure conditions can prevail. Such conditions prevail, for example, in catheters which are used to guide mechanically driven rotating shafts and / or for flushing such catheters. Usually, when flushing catheters that guide a rotating shaft, a very small
- Liquid flow sought which among other things causes abrasion particles of the moment are moved only in a defined direction.
- Such rotating shafts are often made from a bundle of stranded wires, the bundle having a helical shape on its outer contour. This helical shape causes a fast rotation of the while
- valves are designed as a one-way construction. This is useful, for example, in the field of medical technology.
- fluid-conducting components for example the valve control chamber
- Costly components such.
- the valve drive of the closure element which preferably does not come into direct contact with the fluid are provided as reusable components.
- the valve control chamber it is possible for the valve control chamber to be part of a catheter, in particular a catheter tube of, for example, plastic material.
- Suitable valve actuators are, for example, systems which operate without contact (for example, magnetically, inductively) or utilize elastic properties, for example of the valve control chamber, in order to transmit driving forces.
- One embodiment provides that the third position of the closure element lies between the first and the second position.
- each of the two closure positions can be reached quickly, safely and by a minimal movement of the closure element.
- Venttl control space with the exception of the inflow opening and the outflow opening, is closed on all sides in a fluid-tight manner.
- This design provides complete media separation so that the elements of the valve drive do not communicate with the actual fluid to be controlled.
- the closure element has a movable membrane which closes off the valve control chamber in a fluid-tight manner and can be deflected such that either the inflow opening or the outflow opening can be closed by parts of the membrane.
- the membrane which is circumferentially fluid-tightly connected to the remaining parts of the valve control chamber, in particular adhesively bonded or welded, forms a closure of the valve control chamber.
- the fluid to be controlled can flow past the membrane between the inlet opening and the outlet opening or vice versa.
- the membrane is designed to be elastically or plastically deformable, so that it is deflectable, to the extent that it or a part of it either in front of one of the two openings, the inlet opening or the drain opening, can be brought and pressed against this opening. As a result, a completion of the inflow opening or the discharge opening is achieved. To open the respective inflow or outflow, the membrane is relaxed, so that it moves in the ideal case by itself or by their residual stress in their initial position.
- An advantageous embodiment of the invention provides for this purpose that a drive lift! the valve drive deflects the membrane at least in the first and second positions.
- the drive lever thus engages under the membrane and deflects it so far that it is trapped between the inlet opening or the discharge opening and the drive lever and closes the respective opening. If the drive lever of the valve drive is moved back, the membrane is released from the respective opening.
- the drive lever may have, for example, at its oppressive against the membrane end a spherical or Ellipsoidform, which is particularly well suited for closing an opening in the valve control chamber with the interposition of the membrane.
- a further advantageous embodiment of the invention can provide that the closure element can be driven by a magnetically acting Ventälantrieb.
- valve drive it is possible to completely separate the valve itself from the drive unit, for example, characterized in that the valve control chamber is separated from the magnetic drive by a gas or fluid-impermeable wall. Also the Whole Ventii redesign surrounding the valve control chamber can be separated again by an additional media-separating wall of the elements that generate the magnetic fields for the drive.
- the remote from the valve control chamber part of the drive lever can be designed magnetically and be deflected by an external magnet.
- the invention can also advantageously be configured in that the closure element arranged in the valve control chamber is magnetically active and interacts with a magnetic field of the valve drive.
- the closure element or a part of the closure element may consist of a magnetic body, which may for example be magnetistert or at least may consist of a ferromagnetic material and which is drivable in the field of an external magnet.
- the magnetically active part of the closure element may be covered with a non-magnetically active fluid-impermeable layer, so that the fluid whose flow is to be controlled by the valve does not come into contact with the magnetically active part.
- a further advantageous embodiment provides that both the valve control chamber and the parts of the valve drive which are mechanically connected to the closure element, with the exception of the inflow and outflow openings, are fluid-tight and in particular separable from a magnetic field-generating device of the valve drive.
- a further advantageous embodiment of the invention provides that the closure element is preferably moved by an elastic spring element in the third position.
- the closure element can be held in the third position by the elastic spring element, for example a helical spring, and brought by a drive into the first or second position against the force of the spring. After switching off the valve drive is provided that the elastic spring element automatically moves the closure element back to the third position.
- the invention can also advantageously be configured in that directly on the valve control chamber, in particular in the interior of the closure element, a magnet is provided as part of a separating device.
- a magnet is provided as part of a separating device.
- Particles are bound by the magnet of the separating device, so that they are kept away from the sealing surfaces of the valve. It may be provided in particular that the / the magnet (s) of drive armatures of a valve drive separately, in particular spaced apart, are provided.
- the magnet of the separating device is combined or connected with one or more magnets of the valve drive, or a first functional surface of a magnet can serve to separate particles, while other functional surfaces serve the valve function.
- the invention can also relate to a protective device for a valve, which communicates with a flowing fluid, characterized in that, along a flow channel for the fluid, in particular a catheter, of the Venti! spaced and in particular of this separated a separating device for the retention of particles in the fluid is provided with at least one magnetic element.
- the separating device may be advantageously provided with respect to the prevailing flow direction of the fluid upstream of the valve, but the two said elements may also be simply behind each other, in particular spaced from each other, for example, structurally separated, for example in the form of two separate components with different housings be.
- the valve may be free of magnetic or magnetic elements and, for example, be nonmagnetic as a whole. It can have a sealing surface which is to be protected from particles.
- the valve may also include magnetic components, such as a drive magnet or an armature.
- Separator may be a separate from the magnetic components of the valve magnet or aontsfiambae a magnetic component, which has only the function of particle separation, wherein other functional surfaces of the magnetic component can perform other functions of the valve such as a drive function.
- the magnetic element of the separating device can be combined with a magnetic component of the valve, assembled therewith, combined and, in particular, also be combined in one housing.
- the functional surface of the separating device can thus capture and bind particles, in particular magnetic and / or magnetizable particles, before they can reach the valve and thus impair the valve function, for example the sealing function of the sealing surfaces.
- FIG. 1 schematically shows a first embodiment of a valve with a magnetic valve drive in cross-section
- FIG. 2 shows the valve arrangement from FIG. 1 in a three-dimensional
- FIG. 3 is a schematic sectional view of a second embodiment of the valve according to the invention.
- FIG. 4 is a view of an elastic spring element
- FIG. 5 is a three-dimensional view of the Ventiian Aunt from FIG. 3,
- FIG. 6 a valve connected to a separating device
- FIG. 7 another valve connected to a separating device
- FIG. 8 a drive unit for a functional element which can be driven by means of a shaft rotating in a catheter
- FIG. 9 shows a modification of a drive unit according to FIG. 8th
- FIG. 10 and FIG. 11 each further embodiments of drive devices for rotating in a catheter
- FIG. 12 shows a modification of a drive unit according to FIG. 9th
- the FIG. 1 shows schematically a valve body 11 with an inflow channel 1, an outflow channel 2 and a drive lever 3, which deflects a membrane 5.
- the membrane 5 closes off the valve control chamber 12, which is located inside the valve body 11, in a fluid-tight manner and can be pressed by a spherical end 13 selectively against the inflow opening 1 a or the outflow opening 2 a in order to close either the inflow channel 1 or the outflow channel 2.
- the drive lever 3 is about a shaft 7, the spacer sleeves 8 in
- Drive housing 6 is mounted, pivoting.
- the drive lever 3 is shown once in a solid state in the third position III, in which it leaves a connection channel between the inlet opening la and the drain opening 2a and dashed in a first position I, in which the spherical end 13 by means of the membrane 5, the drain opening 2a closes, and also dashed lines in a second position II, in which the drive lever by means of the membrane 5 closes the inflow opening la.
- the elastic spring element 10 is shown in the lower part as a helical spring which connects the end of the drive lever 3 facing away from the membrane with the bottom of the housing 6 and thus holds the drive lever in the third position III.
- the lower part 14 of the drive lever 3 is designed to be magnetically active for this purpose, either as a ferro magnetic, magnetizable or as a magnetized component.
- FIG. FIG. 2 shows in a three-dimensional view a first housing 15 which encloses or harbors the valve body with the valve control chamber as well as the membrane and at least parts of the drive lever 3 and in particular also the drive housing 6.
- the magnets A, B are arranged in a second housing 16 which is movable relative to the first housing 15, in particular separable therefrom. It can be provided that the two housings 15, 16 are connected so that, for example, the first housing 15 can be latched into a holder of the second housing 16. However, it proves to be advantageous if the first housing 15 is separately removable, so that the parts contained in the housing 15 of the valve device can be exchanged separately and treated in particular as a disposable valve member.
- FIG. 3 shows a valve arrangement with a valve body IIa, which encloses a valve control chamber 12a, in which a displacement body 17 is movably mounted.
- the closure body 17 has a magnetically active core 17a and a sheath 17b enclosing the core 17a, in particular made of a plastic, and is connected to a bearing disk 18.
- the bearing disk is in a view in FIG. 4 shown. It is mounted on its circumference on the valve body IIa and overall elastic, so that it holds the closure body 17 in the illustrated middle position.
- Bearing disc 18 has a plurality of openings 25 which allow the passage of the fluid to be controlled by the valve.
- the ends 19, 20 of the closure body 17 are shaped and designed such that they the inflow opening la and the drain opening 2a at a corresponding
- the sheath 17b of the closure body 17 may, for example, consist of an elastic material, in particular an elastomer.
- the magnetic core 17a of the closure body 17 can be acted upon by the magnetic means A ', B' with a force which pulls the closure body 17 either in the direction of the inflow opening 1a or in the direction of the outflow opening 2a to move the valve into the first or second closure position bring to.
- FIG. 5 is shown in a three-dimensional view of the valve body IIa as a housing, which encloses the valve control chamber 12a and the inflow channel 1 and the outflow channel 2, and the housing 16a containing the magnetic devices A 'and B'.
- the housing IIa is, if a part of the valve device is to be used as a one-way valve, of the housing part 16a separable, so that the magnetic devices can be used repeatedly or further, while the part of the valve, which contains the valve control chamber 12a, can be replaced.
- FIG. 3 shows the valve according to the invention in connection with a fluid control device according to the invention, which comprises a catheter 21, a rotating shaft 22 passing through the catheter 21 and a non-illustrated flushing device, the valve comprising the valve body IIa, the valve control chamber 12a and the mechanical parts the valve drive forms part of the purging device.
- Other parts of the flushing device may be, for example, a flushing agent pump and flushing agent reservoir, which are not shown in detail.
- the inflow or outflow channel 1, 2 can then be connected to the catheter 21 in order to be able to dispense rinsing agents into or out of the catheter by corresponding actuation of the valve. It is shown in FIG. 3 to recognize the stranded structure of the shaft 22, which can lead to a different suction or pressure effect depending on the speed of shaft rotation and wear of the shaft.
- FIG. 6 shows a solenoid valve with a transport channel, which is traversed by a fluid between an inflow opening 1 'and an outflow opening 2'.
- a closure body 50 is drivable within the transport channel 88 between a first closed position and a second closed position, wherein in the first VerInstitutsteüung a first closure surface 51 closes a valve opening 51a, while in the second closed position, a closure surface 52 closes a valve opening 52 a.
- two anchor body 53, 54 are integrated, which are driven by the magnetic field of two valve drive coils 55, 56. Axially between the anchor bodies 53, 54 is arranged in alignment with these the magnet 86 of the separating device.
- the anchor bodies are provided with the magnetic body 86 with a common solid envelope 87. By way of example, particles which adhere to the solids envelope 87 are designated 15.
- Retaining springs 57, 58 hold the closure body in the middle position in the absence of excitation of the valve drive coils, in which the valve opens. is net.
- two slide bearings 59, 60 are provided at the ends of the valve housing.
- FIG. 7 shows a valve with an inflow opening 1 ", a discharge opening 2" and a closure body 50 '.
- the closure body 50 ' is drivable within the transport channel 88' between a first closure position and a second closure position, wherein in the first closure position, a first closure surface 51 'closes a Ventiiö réelle 51a', while in the second Verschiuss ein a closure surface 52 'a valve opening 52a 'closes.
- the closure body 50 ' is mounted in the housing of the valve by means of an elastic, permeable disk 61 and held in an open central position.
- the disk 61 carries separating magnets 86 ", 86", which are connected in the closure body 50 'with valve drive anchors 62, 63 and are coated with a protective layer together with these.
- the Ventüantriebsanker 62, 63 are in the field of coils 64, 65 driven. Particles can accumulate in the transport channel on the separating magnets on the protective layer and are held there.
- the catheter device 100 mentioned in the claims will now be incorporated into the
- FIGS. 8-12 shown in several alternatives.
- FIG. 8 shows a catheter device 100 including a drive device with a rotationally drivable drive armature 66, which drives a rotating shaft 67 in a catheter 68.
- a drive device with a rotationally drivable drive armature 66, which drives a rotating shaft 67 in a catheter 68.
- armature 66 which drives a rotating shaft 67 in a catheter 68.
- Lumina designed as an inflow channel 69 radially outward and a return flow channel 70 radially inward, concentric with each other and arranged to the outer sheath of the catheter.
- the inflow channel 69 and the return flow channel 70 are separated by a tubular partition 71.
- a scavenging fluid is pumped from a reservoir 73 through a lumen 74, which is a cannula, and a valve 75.
- Two magnets 76 and 77 are used to drive the valve and are controlled by a pressure switch 78 with the aim of maintaining a constant pressure in the inflow 69.
- the fluid through the valve 75 and through the housing of the operating anchor 66, which is designed as a transport channel Lumen 79 and passed through the separating device 80, where active particles are filtered out of the fluid.
- the separating device 80 may be constructed as shown in FIG. 6 separating device shown. From there, the fluid flows into the catheter 68 through the inflow channel 69 radially outward and the return flow channel 70 radially inward and from there to a peristaltic pump 81, which sucks the fluid and leads into the reservoir 82.
- the spray pump 81 can also serve for the backwashing and for this purpose be operated in such a way that it conveys the fluid to the return channel 70 and from there via the inflow channel 69, through the separating device back to the valve 75 into the reservoir 73, for example to remove trapped particles from the separating device.
- FIG. 9 shows a structure similar to that of FIG. 8, wherein in addition to the valve 75 in front of the drive armature 66 and behind the peristaltic pump 72, a second valve 75 'between the return flow 70 and the
- FIG. 8 applies to flushing systems in which no unwanted negative pressure in the return flow is generated by system components
- FIG. 9 in flushing systems in which an undesired negative pressure is produced in the return line (for example due to the direction of winding a bendy while).
- This negative pressure is detected by the sensor, which then ensures by closing the valve 75 'down that no medium from container 82 via the pump 81 comes into the rinse cycle.
- the separating device is thus arranged between two valves and also between two fluid conveying devices, of which at least one, in particular both, with respect to the conveying direction of the fluid can be switched to reverse the flow direction.
- FIG. 10 In the structure according to FIG. 10 is opposite to the structure in FIG. 8 merely replaces a spray pump 72 with a reservoir 83 which allows gravity flushing by flowing the fluid through the valve 75 and on to the catheter 68 by gravity.
- the rotating shaft 84 within the catheter 68 has, due to its stranded stranded strand-based construction, a coiled outer structure which gives it a pumping action in the direction away from the drive armature 66 even upon rotation.
- Fluid to the catheter 68 another variant with a volume controlled Peristaltic pump 72 and a reservoir 73 shown.
- the peristaltic pump there conveys the fluid to the interior of the catheter, which for example leads into the body of a patient and ends there at a heart pump 85 with a rotor 85a.
- the heart pump can be radially compressible or altogether particularly susceptible to particles that have gotten into it. From there, the fluid then flows back.
- a separating device 80 can be provided in each case in the flow direction in front of the catheter 68 between the latter and the conveying device 73, 83, in particular in front of the heart pump 85.
- FIG. 11 shows a constellation similar to that of FIG. 9, wherein instead of the peristaltic pump 72, a gravity feed 83 is provided, the fluid in the normal operation from there via the valve into the catheter 68 and there first through the inflow channel 69 radially outward into the return flow channel 70 radially inward and from there to a peristaltic pump 81 which sucks the fluid and directs it into the reservoir 82.
- the fluid first passes through the separating device 80, which is arranged between the return flow channel and the housing of the drive armature 66. Thereafter, the fluid flows past the drive armature 66 to the hose pump 81.
- the bearing of the drive armature can be relatively insensitive, so that the fürströmrtchtung of the fluid is of minor importance there. It is particularly important that the housing of the drive armature is supplied with the fluid to ensure good lubrication. The arrangement chosen also ensures that magnetic abrasive particles of the rotating shaft 84 in this case can not damage the bearings of the drive armature.
- FIG. 12 shows a structure similar to FIG. 9, with another one
- Separator 80 ensures that the function of the sealing surfaces of the valve 75' is not affected by adhering particles.
- the present application relates, inter alia, to the following aspects:
- a valve control chamber (12, 12a) in which an inflow channel (1) with an inflow opening (la) and a discharge channel (2) with a discharge opening (2a), and with a closure element (5, 13, 17) which can be moved in the valve control chamber (12, 12a) and which in at least one first position (I) has the discharge opening (2a) in at least one second position (FIG. il) closes the inflow opening (1a) and which in at least one third position (III) holds open a connection channel between the inflow opening (1a) and the outflow opening (2a), a valve drive (A, B, ⁇ ', B', 3, 14, 18) is provided which moves the closure element (5, 13, 17) optionally at least in the first, second or third position.
- a valve drive A, B, ⁇ ', B', 3, 14, 18
- Valve according to aspect 1 characterized in that the third position (III) of the VerMediceiementes (5, 13, 17) is located between the first and the second position.
- Valve according to aspect 1 or 2 characterized in that the valve control chamber (12, 12a) is separable from a valve drive of the closure element (5, 13, 17).
- Valve according to aspect 1 or one of the following characterized in that the valve control chamber (12, 12a) with the exception of the inflow opening (la) and the outflow opening (2a) is closed on all sides fluid-tight.
- Valve according to aspect 5 characterized in that a drive lever ⁇ 3, 14) of the valve drive (3, 14, 18, A, A ', B, B') deflects the diaphragm (5) at least in the first and second positions.
- Valve according to aspect 7 characterized in that in the Ventii himselfraum (12, 12a) arranged closure element (5, 13, 17) is magnetically active and with a magnetic field of the valve drive ⁇ A, A 1 , B, B ') interacts.
- Valve according to aspect 7 characterized in that both the valve control chamber (12, 12a) and the parts (3, 14, 18) of the valve drive which are mechanically connected to the closure element (5, 13, 17), with the exception of the inflow and outflow openings ( 1a, 2a) are sealed in a fluid-tight manner and are separable from a magnetic field generating device (A, ⁇ ', B, B') of the valve drive.
- Valve according to aspect 12 characterized in that the /
- Magnet (s) (13 “, 13” *, 13 “") of drive armatures (53, 54, 62, 63) of a valve drive separately, in particular spaced, are provided.
- Catheter comprising a valve according to at least one of the preceding claims, characterized in that the valve control chamber is separable from a valve drive of the closure element.
- Protective device for a valve which communicates with a flowing fluid, characterized in that along a flow channel (79, 88) for the fluid, in particular a catheter, spaced from the valve and in particular separated from the latter
- Separation device (80) for the retention of particles in the fluid with at least one magnetic element (86, 86 ', 86 ") is provided.
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Mechanical Engineering (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Biophysics (AREA)
- Medical Informatics (AREA)
- Child & Adolescent Psychology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- External Artificial Organs (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Transplantation (AREA)
Abstract
Description
Claims
Priority Applications (16)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310263436.9A CN116271417A (zh) | 2015-01-22 | 2016-01-22 | 包括用于控制通过导管的流体流的阀的导管装置 |
EP24169911.5A EP4434571A2 (de) | 2015-01-22 | 2016-01-22 | Kathetervorrichtung, enthaltend ein ventil zur steuerung eines fluidflusses durch einen katheter |
KR1020237008679A KR20230042134A (ko) | 2015-01-22 | 2016-01-22 | 카테터를 통한 유체 흐름을 조절하기 위한 밸브를 포함하는 카테터 장치 |
US15/545,003 US10518010B2 (en) | 2015-01-22 | 2016-01-22 | Catheter device, comprising a valve for controlling a fluid flow through a catheter |
CN202010855332.3A CN111905231B (zh) | 2015-01-22 | 2016-01-22 | 包括用于控制通过导管的流体流的阀的导管装置 |
JP2017538959A JP6599997B2 (ja) | 2015-01-22 | 2016-01-22 | カテーテルを通る流体フローを制御するためのバルブを含むカテーテルデバイス |
DK16701465T DK3247450T3 (da) | 2015-01-22 | 2016-01-22 | Kateter med en magnetisk aktiveret ventil til styring af flowet af en fluid gennem kateteret |
CN202010855035.9A CN111905230B (zh) | 2015-01-22 | 2016-01-22 | 包括用于控制通过导管的流体流的阀的导管装置 |
KR1020177022929A KR102510791B1 (ko) | 2015-01-22 | 2016-01-22 | 카테터를 통한 유체 흐름을 조절하기 위한 밸브를 포함하는 카테터 장치 |
CN201680006875.XA CN107206225B (zh) | 2015-01-22 | 2016-01-22 | 包括用于控制通过导管的流体流的阀的导管装置 |
EP16701465.3A EP3247450B1 (de) | 2015-01-22 | 2016-01-22 | Kathetervorrichtung, enthaltend ein magnetisch betätigbares ventil zur steuerung des fluidflusses durch den katheter |
EP19185354.8A EP3572120B1 (de) | 2015-01-22 | 2016-01-22 | Kathetervorrichtung, enthaltend ein ventil zur steuerung eines fluidflusses durch einen katheter |
CA2974584A CA2974584A1 (en) | 2015-01-22 | 2016-01-22 | Catheter device, comprising a valve for controlling a fluid flow through a catheter |
ES16701465T ES2758077T3 (es) | 2015-01-22 | 2016-01-22 | Dispositivo de catéter, conteniendo una válvula accionable magnéticamente para el control del flujo de fluido a través del catéter |
US16/694,518 US11045641B2 (en) | 2015-01-22 | 2019-11-25 | Catheter device, comprising a valve for controlling a fluid flow through a catheter |
US17/322,374 US20210339010A1 (en) | 2015-01-22 | 2021-05-17 | Catheter device, comprising a valve for controlling a fluid flow through a catheter |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15152205.9 | 2015-01-22 | ||
EP15152201.8A EP3047873A1 (de) | 2015-01-22 | 2015-01-22 | Magnetisch betätigbares ventil zur steuerung des fluidflusses durch einen katheter |
EP15152205.9A EP3047911A1 (de) | 2015-01-22 | 2015-01-22 | Separiereinrichtung zur Rückhaltung von in einem Fluid befindlichen magnetischen Partikeln sowie Schutzreinrichtung für ein Funktionselement |
EP15152201.8 | 2015-01-22 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/545,003 A-371-Of-International US10518010B2 (en) | 2015-01-22 | 2016-01-22 | Catheter device, comprising a valve for controlling a fluid flow through a catheter |
US16/694,518 Continuation US11045641B2 (en) | 2015-01-22 | 2019-11-25 | Catheter device, comprising a valve for controlling a fluid flow through a catheter |
Publications (2)
Publication Number | Publication Date |
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WO2016116608A2 true WO2016116608A2 (de) | 2016-07-28 |
WO2016116608A3 WO2016116608A3 (de) | 2016-09-15 |
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2016/051358 WO2016116608A2 (de) | 2015-01-22 | 2016-01-22 | Kathetervorrichtung, enthaltend ein ventil zur steuerung eines fluidflusses durch einen katheter |
PCT/EP2016/051391 WO2016116630A2 (de) | 2015-01-22 | 2016-01-22 | Kathetereinrichtung, enthaltend eine separiereinrichtung zur rückhaltung von in einem fluid befindlichen magnetischen partikeln sowie schutzeinrichtung für ein funktionselement |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2016/051391 WO2016116630A2 (de) | 2015-01-22 | 2016-01-22 | Kathetereinrichtung, enthaltend eine separiereinrichtung zur rückhaltung von in einem fluid befindlichen magnetischen partikeln sowie schutzeinrichtung für ein funktionselement |
Country Status (9)
Country | Link |
---|---|
US (5) | US10960117B2 (de) |
EP (4) | EP3247450B1 (de) |
JP (9) | JP6599997B2 (de) |
KR (4) | KR102510791B1 (de) |
CN (8) | CN116808431A (de) |
CA (2) | CA2974584A1 (de) |
DK (2) | DK3247450T3 (de) |
ES (1) | ES2758077T3 (de) |
WO (2) | WO2016116608A2 (de) |
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WO2018017683A1 (en) * | 2016-07-21 | 2018-01-25 | Thoratec Corporation | Gas-filled chamber for catheter pump motor assembly |
WO2018118756A1 (en) * | 2016-12-19 | 2018-06-28 | Abiomed, Inc. | Heart pump with passive purge system |
CN109843369A (zh) * | 2016-10-17 | 2019-06-04 | 拜耳医药保健有限公司 | 流体控制阀和歧管 |
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WO2018226991A1 (en) | 2017-06-07 | 2018-12-13 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
CN111556763B (zh) | 2017-11-13 | 2023-09-01 | 施菲姆德控股有限责任公司 | 血管内流体运动装置、系统 |
EP4085965A1 (de) | 2018-02-01 | 2022-11-09 | Shifamed Holdings, LLC | Intravaskuläre blutpumpen und verfahren zur verwendung und herstellung |
JP2022540616A (ja) | 2019-07-12 | 2022-09-16 | シファメド・ホールディングス・エルエルシー | 血管内血液ポンプならびに製造および使用の方法 |
US11654275B2 (en) | 2019-07-22 | 2023-05-23 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
EP4034192A4 (de) | 2019-09-25 | 2023-11-29 | Shifamed Holdings, LLC | Intravaskuläre blutpumpensysteme und verfahren zur verwendung und steuerung davon |
WO2021062270A1 (en) | 2019-09-25 | 2021-04-01 | Shifamed Holdings, Llc | Catheter blood pumps and collapsible pump housings |
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US11590338B2 (en) | 2016-12-19 | 2023-02-28 | Abiomed, Inc. | Heart pump with passive purge system |
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