EP3325045A1 - Dispositif d'actionnement pour l'administration d'un bolus - Google Patents

Dispositif d'actionnement pour l'administration d'un bolus

Info

Publication number
EP3325045A1
EP3325045A1 EP16741298.0A EP16741298A EP3325045A1 EP 3325045 A1 EP3325045 A1 EP 3325045A1 EP 16741298 A EP16741298 A EP 16741298A EP 3325045 A1 EP3325045 A1 EP 3325045A1
Authority
EP
European Patent Office
Prior art keywords
actuating
bolus
fluid
actuating device
movable element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16741298.0A
Other languages
German (de)
English (en)
Inventor
Karsten HASLBECK
Martin Sippel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
B Braun Melsungen AG
Original Assignee
B Braun Melsungen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by B Braun Melsungen AG filed Critical B Braun Melsungen AG
Publication of EP3325045A1 publication Critical patent/EP3325045A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • A61M5/16881—Regulating valves
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14212—Pumping with an aspiration and an expulsion action
    • A61M5/14216—Reciprocating piston type
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/148—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M2005/1401—Functional features
    • A61M2005/1405—Patient controlled analgesia [PCA]
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
    • A61M5/1454—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons spring-actuated, e.g. by a clockwork

Definitions

  • the invention relates to an actuating device for administering a fluid bolus.
  • Medicated fluids are administered to a patient from a fluid reservoir using a tube system.
  • pain therapy analgesia
  • the aim of the analgesic is to provide patients with a continuous analgesic to suppress pain.
  • the patient an actuator for Its operation triggers the administration of an additional dose of pain medication (bolus).
  • the fluid reservoir is provided, in which the fluid dose is contained for the bolus.
  • the fluid reservoir can be connected to the fluid delivery pump via an inflow line and connected to a connection for the patient via a drain line.
  • the patient port is for connection to a patient or a catheter inserted in the patient.
  • the object of the invention is to provide an actuation device for triggering a bolus in the PCA (Patient Controlled Analgesia) with which the risk of overdose is reduced.
  • PCA Principal Controlled Analgesia
  • the actuating device according to the invention is defined by the features of claim 1.
  • a portion of a fluid-conducting tube to be administered which can be connected to the fluid source via an inflow line and to a patient via a drainage line, can be closed by a closing mechanism.
  • the locking mechanism is actuated by an actuator which is slidable along a longitudinal axis from an upper (proximal) position to a lower (distal) position.
  • the upper position of the operating knob may also be referred to as the first position, while the lower position may be referred to as the second position.
  • the actuating member actuates the closing mechanism such that the hose portion is opened in the lower position of the actuating element and is closed in its upper position.
  • the upper position of the actuating element is a starting position. In the starting position of the actuating element, the closing mechanism closes the tube section. Then no fluid flows from the source through the Hose section in the direction of the patient. The fluid supply is interrupted. Upon actuation of the actuator, the latter is displaced towards its lower position, whereby the closing mechanism is actuated and releases the tube section, so that fluid flows from the source through the tube section in the direction of the patient-connectable end.
  • the actuating device according to the invention can also be referred to as a triggering device for triggering a bolus.
  • the actuating element may be an actuating button.
  • the movable member is slidable along a longitudinal axis from an upper position to a lower position independently of the actuating member.
  • the longitudinal axis, along which the movable element is displaceable is preferably parallel to the longitudinal axis, along which the actuating element is displaceable.
  • the two longitudinal axes can be identical, for example.
  • a lock is provided to lock the movable member in its upper position. By moving the actuator in the direction of its lower position, the lock is released.
  • An elastic member is disposed between the operating member and the movable member such that the operating member and the movable member are pushed apart, that is, away from each other.
  • a bolus reservoir contains a bolus amount of the fluid which is forced out of the bolus reservoir by displacing the movable member in the direction of our position.
  • the movable element reduces the volume of the bolus reservoir.
  • the actuator is provided with two locks.
  • a first actuation lock locks the actuator in its lower position, that is, after the actuator has been depressed.
  • the first An actuation lock is releasable from the movable element when it reaches its lower position.
  • the second actuation lock locks the actuator in its upper position and is detachable from the movable element when it reaches its upper position.
  • the actuation locks may be button locks to lock the actuation button.
  • the movable element is initially locked by the lock in its upper position (initial position). Upon depression of the actuating element, the barrier of the movable element is released and the elastic element pushes the movable element away from the actuating element. When the button attains its lower position, it is locked there by the first operating lock of the actuating element. The first actuating lock then forms an abutment for the force of the elastic element, so that the movable element is advanced by the elastic element supported on the locked actuating element in the direction of its lower position. The movable element presses the bolus amount of the fluid out of the bolus reservoir.
  • the movable element As soon as the movable element has reached its lower position, this releases the first actuating lock of the actuating element and the actuating element is pushed back by the elastic element in the direction of its upper position.
  • the movable element is supported at its lower reversal point.
  • the lower reversal point of the movable element can be formed for example by a stop on the bolus reservoir.
  • the movable element As soon as new fluid flows into the bolus reservoir, the movable element is displaced against the force of the elastic element from its lower position towards its upper position. Triggering a new bolus by actuating the actuating element is prevented because the second actuating lock locks the actuating element. Only when the complete amount of bolus has flowed in and the movable element again reaches the upper position, this releases the second actuation lock of the actuating element and by pressing the Betrelifactselemtes the administration of another bolus can be triggered.
  • the bolus reservoir is preferably connected via a bolus line to the inflow line and the outflow line. Fluid flowing through the inflow conduit from a fluid source thus enters the bolus reservoir via the bolus conduit, while when the bolus is administered, the fluid flows via the outflow conduit in the direction of the end that can be connected to the patient.
  • the flow resistance of the tube section should be less than the flow resistance of the bolus line. Fluid flowing through the inlet conduit chooses the path of least flow resistance and thus flows through the tube section as long as it is released by the closure mechanism. Only when, after the return of the actuating element in its upper position of the closing mechanism clamps the tube section, the fluid flows through the bolus line with greater flow resistance in the bolus reservoir to fill it.
  • the closing mechanism for the hose portion may be provided with a clamping spring which clips the hose portion.
  • the spring force of the clamping spring counteracts a displacement of the actuating element from its upper position in the direction of its lower position.
  • the actuator is doing due to the spring force of the clamping spring strives to return to the starting position (upper position).
  • the clamping spring may be provided with a spring arm, which clamps the hose section.
  • the actuating element may comprise an actuating fork engaging with the spring arm, which presses against the spring arm when the actuating element is pressed in the direction of the lower position and actuates the clamping spring in order to open the closing mechanism and release the hose section.
  • the lock may comprise a detent mechanism provided with a latching lug held on a spring clip which holds the movable member.
  • the movable member is prevented by the locking lug from being displaced by the force of the elastic member.
  • a laterally projecting latching web of the movable element can act on the latching lug.
  • the movable element and the actuating element are each provided with an attack surface.
  • the engagement surfaces of the movable element and the actuating element are adapted to be placed against each other, to transmit a force acting on the actuator force to the movable member and vice versa.
  • the first actuating lock of the actuating element may be provided with a resilient latch which engages a housing part.
  • the latch locks the actuator to the housing member and prevents the resilient member from shifting the actuator back to its upper position.
  • the movable element preferably has a latch engaging the first attack surface. As soon as the movable element reaches its lower position, it automatically actuates the latching pawl against its spring force via the first engagement surface. The actuator is thereby released again and the elastic member pushes the actuator back to its upper position.
  • the second actuation lock locks the actuator in its upper position.
  • This can be done by a spring clip that locks the actuator in the upper position relative to the housing.
  • a arranged on the movable member second engagement surface can be formed be to press the spring clip against its spring force as soon as the movable element reaches its upper position.
  • the movable element may be a piston or a balloon.
  • actuation of the actuating element leads to displacement of the piston.
  • actuation of the actuator results in displacement or depression or deformation of the balloon.
  • the movable element can be displaceably mounted in the fluid reservoir against the force of an elastic element.
  • the elastic element may in the case of the piston be a spring displacing the piston.
  • the elastic element may be a compressible part of the balloon itself.
  • the piston is slidably guided in the bolus reservoir.
  • the bolus reservoir then forms a cylinder for the piston.
  • the bolus reservoir can in particular be designed completely as a cylinder, in which the piston is displaceable back and forth.
  • the actuating element can be actuated by a first actuation path and by a further second actuation path extending beyond the first actuation path.
  • the movable element When covering the first actuating travel, the movable element is moved manually, that is exclusively by manual operation by hand by applying a corresponding force by the user.
  • An outlet-side valve is already open to the patient.
  • a first bolus amount is administered manually.
  • This first bolus quantity may be, for example, a residual fluid still present in the fluid line. Only after covering the first actuating travel, the actuating element triggers an automatic administration of a second bolus amount.
  • the movable element is automatically moved along the second actuating path.
  • Automatic means in this context that the movable element can be moved, for example, by a spring and for this no manual force to be applied by the user is needed.
  • the fluid quantity contained in the fluid reservoir is thus automatically administered as a second bolus quantity.
  • a mechanical resistance is overcome in order to displace the actuating element.
  • This mechanical resistance can be formed, for example, by resilient blocking elements which are to be displaced and overcome by the actuating element in the region of the first actuating path.
  • This mechanical resistance provides haptic feedback indicating to the user the upcoming administration of the main bolus amount (second bolus amount). The force for actuating the movable element is then increased for the first actuation path.
  • the movable element or the piston is displaceably mounted against the force of a spring.
  • the spring force of the spring serves on the one hand to counteract the pressure of the inflowing fluid, so that the movable member is displaced over a predetermined period of time.
  • the spring force is used to actuate the movable element at pressures of the actuating element, so that the fluid is pressed out of the fluid reservoir into the outflow line due to the spring force.
  • a first spring force can counteract the movable element when actuated along the first actuation path to a manual actuation a to create mechanical resistance.
  • a second spring force may assist or automatically displace the movable member upon actuation of the actuator along the second actuating path.
  • An advantage of manual bolus delivery along the first actuation path in conjunction with automatic bolus delivery along the second actuation path is that resistors acting on the moveable element, such as the stiction of the at least one moveable element or injection resistances in the connected catheter, can be better overcome.
  • an inlet valve is provided in the inlet line and an outlet valve is provided in the outlet line for interrupting and releasing the fluid path.
  • the input valve and the output valve are each connected to the actuator such that the input valve releases the inflow line in the non-actuated state of the actuator and the output valve blocks the outflow line.
  • the fluid pump delivers new fluid into the fluid reservoir through the inlet valve, while no fluid can pass from the fluid reservoir through the outlet valve to the patient port. This is only possible when the actuator is actuated, whereby the input valve blocks the inflow line and the output valve releases the drain line so that the pressurized fluid can flow from the fluid reservoir into the drain line and to the patient port.
  • the actuating element is therefore locked and no fluid can reach the patient port.
  • the actuator is automatically released, an actuation of the actuator causes the inflow line is blocked and the drain line is released, whereby the pressurized fluid from the fluid reservoir instantly shoots into the lower pressure loaded drain line and flows to the patient connection.
  • the river out the pump through the bolus fluid line is excluded during bolus delivery.
  • a bolus flow restrictor is advantageously provided, which restricts the flow rate in a suitable manner such that until the refill of the fluid reservoir with the bolus quantity such a time elapses, which prevents an overdose for the patient when the bolus is triggered again.
  • the cross-section of the inflow conduit is reduced such that during the time after administration of a bolus in which re-administration could result in overdose, the amount of fluid in the fluid reservoir is insufficient to trigger a bolus.
  • the fluid reservoir is filled again with the bolus quantity only if a renewed triggering can not lead to an overdose.
  • the triggering device is included in a bolus fluid path that extends between a fluid delivery pump and the patient port.
  • a main fluid path is provided for continuous delivery of fluid to the patient port.
  • the main fluid path may be provided with a main flow throttle for adjusting the flow rate.
  • two flow paths or each one upstream of a filter are preferably or additionally, two flow paths or each individual downstream of a filter.
  • FIG. 1 is a perspective view
  • FIG. 2 is an exploded view; 3 shows a section in a first operating state,
  • FIG. 4 shows a further section in the first operating state
  • Figure 5 shows a further section in the first operating state
  • FIG. 6 shows a section in a second operating state
  • FIG. 7 shows a further section in the second operating state
  • FIG. 8 shows a further section in the second operating state
  • FIG. 9 shows a further section in the second operating state
  • FIG. 10 shows a section in a third operating state
  • FIG. 12 shows a perspective view in a fourth operating state
  • FIG. 13 shows a further perspective view in the fourth operating state
  • FIG. 14 shows a perspective view in a fifth operating state
  • Figure 15 is another perspective view in the fifth operating state.
  • Figure 16 is a schematic representation of the PCA device.
  • the movable element 14 is a piston.
  • the elastic element 16 relates to a piston spring.
  • the actuating element 12 is an actuating button, the two actuating locks 24, 28 being first and second button locks.
  • the piston spring 16 is a coil spring, which bears against the rear end of the piston 14 and surrounds a cylindrical inner neck 13 of the piston.
  • An actuating fork 32 protrudes in the distal direction of the operating knob 12 forward.
  • the actuating fork 32 is an integral part of the knob 12.
  • the actuating fork 32 is provided with a recess which engages with a spring arm 30 of the clamping spring 50.
  • the clamping spring 50 forms a closing mechanism for a portion of a hose 18 which is connectable via an inflow line 20 to a fluid source and via a drain line 22 to a patient.
  • a piston lock 15 holds the piston in the upper, proximal position according to FIG. 3 (first actuation state).
  • the piston lock 15 is formed as a latching mechanism by a latching lug 52 on a spring clip 54.
  • the spring clip 54 is a fixedly connected to the housing 42 of the actuator part.
  • the latching nose 52 engages with a latching web 56 which projects laterally from the piston transversely to its longitudinal axis.
  • the first button lock 24 is formed by a latch 36 on the button which engages a fixed part 38 of the housing 42.
  • the housing part 38 is a projection.
  • Figure 3 shows how shortly before reaching the lower position, the resilient latch 36 of the knob 12 is pushed over the housing part 38 (projection) when pressing the button 12.
  • the pawl 36 is locked to the housing part 38, as seen in Figure 6 (second operating state).
  • the first button lock 24 forms the abutment for the deployment of the force of the piston spring 16 on the piston 14th
  • the piston 14 is thereby pressed into the bolus reservoir 26.
  • the liquid contained in the bolus reservoir is squeezed out.
  • FIG. 7 shows that during the extraction of the liquid from the bolus reservoir 26, the clamping spring 50 continues to be actuated and the tube section 18 is released. That from the bolus reservoir 26 extruded fluid is supplied via a bolus line 48 to the drain line 22 and to a patient connected to the drain line 22.
  • a first engagement surface 40 on a proximal collar of the piston 14 actuates the detent pawl 36 radially outward as shown in FIG. 10 (third actuation state).
  • the latch 36 is released from the stationary housing part 38.
  • the first button lock 24 is thus automatically released by the piston 14 reaching the lower position.
  • the fluid is then completely squeezed out of the bolus reservoir 26.
  • Figure 11 shows that the latching web 56 has then reached its lowest position.
  • the latching web 56 can thus serve as a level indicator. Based on the relative position of the level indicator 56 can be closed 26 on the level of the bolus reservoir.
  • the button 12 is pushed by the piston spring 16 in the proximal direction of the arrow in Figure 10 back to its upper (proximal) position.
  • the button 12 is held by a second button lock 28 in its upper (proximal) position shown in Figure 12 latching (fourth operating state).
  • the second button lock 28 is formed by a spring clip 44 which locks against the housing 42, as shown in FIG.
  • the spring clip 44 prevents the button 12 can be pressed in the distal direction. An actuation of the actuating knob 12 is thereby prevented.
  • the fluid flowing into the bolus reservoir 26 presses the piston 14 upward in the proximal direction of the arrow in FIG.
  • the hose portion 18 is meanwhile closed by the clamping spring 50, because the button 12 is locked in the upper position of the second button lock 28. This is shown in FIG. So it can not Flow fluid through the hose section 18.
  • the fluid pressure in the bolus reservoir 26 is increased sufficiently to push the piston 14 upwards and to fill the bolus reservoir 26.
  • a second engagement surface 46 on the proximal collar of the piston 14 presses against the spring clip 44 and pushes it radially inward, thereby releasing the engagement between the spring clip 44 and the actuating button 12 becomes (fifth operating state).
  • the piston 14 in its upper position releases the second head stop 28 via the second engagement surface 46.
  • the button 12 is released for re-actuation to trigger another bolus. An actuation of the button 12 is prevented, however, when the bolus reservoir 26 is not completely filled again.
  • FIG. 15 shows that in the completely filled state of the bolus reservoir 26, after reaching the upper position of the piston 14, the tube section 18 is still closed. Only after a renewed actuation of the button 12, the tube section 18 is released, so that fluid can flow from the fluid source in the direction of the patient.
  • FIG. 16 shows the PCA device having a fluid delivery pump 112 and a patient port 114.
  • a catheter inserted into a patient can be connected to the patient port 114.
  • the fluid pump 112 delivers a painkiller through the fluid paths 116, 122 to the port 114.
  • a first fluid path 116 forms a main fluid path through which the fluid is continuously delivered from the pump 112 to the patient port 114.
  • the flow area through the main fluid path 116 is defined by the main fluid throttle 118. Between the Main fluid throttle 118 and the fluid delivery pump 112, a filter 120 is disposed.
  • a bolus fluid line 122 is connected in parallel to the main fluid line 116.
  • the bolus fluid path 122 has an inflow line 20 connected to the filter 120 and the pump 112 and a drain line 22 connected to the patient port 114.
  • a fluid reservoir 26 connected thereto is formed.
  • the inflow line 20 and the outflow line 22 each open into the fluid reservoir 26.
  • the fluid reservoir 26 a counter to the force of a spring 16 displaceable piston 14 is provided.
  • the fluid reservoir 26 is formed as a cylinder, in which the piston 14 is sealingly guided. Fluid flowing into the fluid reservoir 26 through the inflow line 20 displaces the piston 14 against the force of the spring 16 when the pressure applied by the fluid delivery pump 112 is sufficient to overcome the spring force.
  • the inflow line 20 has an input valve 134.
  • the drain line 22 has an outlet valve 136.
  • the input valve 134 and the output valve 136 each have a blocking position in which the respective fluid path 20, 22 is blocked, and a passage position in which the respective fluid path 20, 22 is released.
  • the input valve 134, the fluid reservoir 26 and the output valve 136 are connected to an actuator 12 which actuates the input valve 134, the piston 14 and the output valve 136 at the same time.
  • the outlet valve 136 may be the closing mechanism for the tube section 18.
  • the input valve 134 and the output valve 136 are displaced by the actuator 12 transversely to the flow direction of the fluid.
  • the inlet valve 134 releases the inflow line 20 and the outlet valve 136 blocks the outflow line 22.
  • fluid conveyed by the fluid feed pump 112 can flow through the inlet valve 134 and through the inflow line 20 the fluid reservoir 26 flow where it moves the piston 14.
  • the fluid can not flow out of the fluid reservoir 26 to the patient port 114 because the outflow line 22 is blocked by the outlet valve 136.

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne un dispositif d'actionnement pour l'administration d'un bolus, comprenant un élément d'actionnement (12) qui peut coulisser d'une position supérieure en une position inférieure afin d'actionner un mécanisme de fermeture qui ouvre une portion (18) d'un tuyau lorsque l'élément d'actionnement (12) est en position inférieure et qui ferme la portion de tuyau (18) lorsque l'élément d'actionnement (12) est en position supérieure, la portion de tuyau (18) pouvant être raccordée à une source de fluide par le biais d'une conduite d'amenée (20) et à un patient par le biais d'une conduite d'écoulement (22). Ledit dispositif comprend également un élément mobile (14) qui peut coulisser d'une position supérieure en une position inférieure indépendamment de l'élément d'actionnement (12), un blocage (15) qui arrête l'élément mobile (14) en position supérieure et est amovible de l'élément d'actionnement (12) grâce au coulissement de celui-ci en direction de la position inférieure, un élément élastique (16) comprimant l'élément d'actionnement (12) et l'élément mobile (14), un premier blocage d'actionnement (24) qui arrête l'élément d'actionnement (12) dans sa position inférieure et qui est amovible de l'élément mobile (14) quand ce dernier est en position inférieure, un réservoir de bolus (26) pour accueillir une quantité bolus d'un fluide, le volume du réservoir de bolus (26) pouvant être réduit en faisant coulisser l'élément mobile (14) dans la direction de sa position inférieure et un deuxième blocage d'actionnement (28) qui arrête l'élément d'actionnement (12) dans sa position supérieure et qui est amovible de l'élément mobile (14) quand ce dernier est en position supérieure.
EP16741298.0A 2015-07-21 2016-07-19 Dispositif d'actionnement pour l'administration d'un bolus Withdrawn EP3325045A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015213726.0A DE102015213726A1 (de) 2015-07-21 2015-07-21 Betätigungsvorrichtung zur Bolusverabreichung
PCT/EP2016/067195 WO2017013124A1 (fr) 2015-07-21 2016-07-19 Dispositif d'actionnement pour l'administration d'un bolus

Publications (1)

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US11273254B2 (en) 2017-06-07 2022-03-15 Avent, Inc. Bolus delivery device
WO2020149406A1 (fr) * 2019-01-17 2020-07-23 ニプロ株式会社 Dispositif de commande d'injection de solution de médicament
JP7298268B2 (ja) * 2019-04-19 2023-06-27 ニプロ株式会社 薬液注入コントローラ

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DE3213390A1 (de) * 1982-04-10 1983-10-20 Dieter 3000 Hannover Biela Vorrichtung zur bilanzierung des fluessigkeitsaustausches bei haemofiltrationen
US5011477A (en) * 1989-04-21 1991-04-30 Baxter International Inc. Continuous/bolus infusor
CA2771723C (fr) * 2000-09-08 2016-03-29 Insulet Corporation Dispositifs, systemes et procedes de perfusion d'un patient
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US9061100B2 (en) * 2013-10-11 2015-06-23 Avent, Inc. Large-volume bolus patient controlled drug administration device with lock-out
US10183130B2 (en) * 2015-04-29 2019-01-22 Carefusion 303, Inc. Measuring valve health by pressure monitoring

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DE102015213726A1 (de) 2017-01-26
US20180207361A1 (en) 2018-07-26

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