US20050143653A1 - Automatic injection device - Google Patents
Automatic injection device Download PDFInfo
- Publication number
- US20050143653A1 US20050143653A1 US11/068,878 US6887805A US2005143653A1 US 20050143653 A1 US20050143653 A1 US 20050143653A1 US 6887805 A US6887805 A US 6887805A US 2005143653 A1 US2005143653 A1 US 2005143653A1
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- Prior art keywords
- head
- automatic injection
- injection device
- syringe
- piston
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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
- 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
- A61M5/1456—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
-
- 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
- A61M5/007—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 for contrast media
-
- 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
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M5/2066—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically comprising means for injection of two or more media, e.g. by mixing
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31501—Means for blocking or restricting the movement of the rod or piston
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
- A61M5/31573—Accuracy improving means
- A61M5/31575—Accuracy improving means using scaling up or down transmissions, e.g. gearbox
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
- A61M5/31578—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31596—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms comprising means for injection of two or more media, e.g. by mixing
-
- 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
- A61M2005/1403—Flushing or purging
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M2005/3152—Piston or piston-rod constructions, e.g. connection of piston with piston-rod including gearings to multiply or attenuate the piston displacing force
-
- 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
- A61M5/178—Syringes
- A61M5/19—Syringes having more than one chamber, e.g. including a manifold coupling two parallelly aligned syringes through separate channels to a common discharge assembly
Definitions
- the present invention relates to a contrast medium injection device used for X-ray CT image diagnosis, MRI image diagnosis and the like.
- a contrast medium is used for the diagnosis of X-ray CT (computed tomography) images, MRI, angio-images (angiographic images) and the like.
- the contrast medium is a liquid having high viscosity and the injection thereof by means of a manual power takes a lot of time and labor so that in recent years automatic contrast medium injection devices have come to be used.
- FIG. 8 An automatic injection device 100 of FIG. 8 is an example of such devices, and since it can be mounted with two syringes, it is referred to as a double-head type.
- FIG. 9 shows a typical mechanism of the automatic injection device.
- a syringe 1 a for the contrast medium is set at the side of a head A
- a syringe 1 b for a physiological saline solution is set at the side of a head B
- a Y-shaped tube 2 is connected to the tips of the two syringes.
- a catheter is connected to the tip of the Y-shaped tube and can be injected with the contrast medium and the physiological saline solution.
- the physiological saline solution is used mainly for flushing inside the tube in order to prevent blood from coagulating inside the catheter and the tube after the contrast medium was injected. It is also used for the purpose of diluting the contrast medium.
- injection of a required amount of the contrast medium is performed by forwarding a syringe piston of the head A while a syringe piston at the head B stopped, and then after the side of the head A is stopped, the side of the head B is moved forward to perform flushing with the physiological saline solution.
- both cylinder pistons of the head A and the head B are moved forward so as to mix the liquid of both heads A and B in the Y-shaped tube (i.e. three way-branched tube).
- rotations of motors 4 a , 4 b at the sides of the head A and the head B, respectively, are transferred to motor gears 6 a , 6 b via gear heads 5 a , 5 b , and transferred to screw gears 7 a , 7 b linked to ball screws 8 a , 8 b by being reduced to a predetermined gear ratio to rotate the ball screws 8 a , 8 b .
- the rotation is converted into a linear movement by ball nut units 9 a , 9 b which are engaged with the ball screws 8 a , 8 b so that piston holders 3 a , 3 b which hold the syringe pistons are allowed to move forward or backward.
- the contrast medium has high viscosity, and high pressure is necessary for the injection, specifically when the contrast medium is injected, the high pressure is also transferred to the side of the head B via the Y-shaped tube. Therefore, in the case of the device using a mechanism having an extremely small frictional factor such as that of the ball screw, there was the possibility that the syringe piston at the side of the head B is pushed and forced to move backward by high pressure and the contrast medium is sucked by the head B.
- a valve is provided between the Y branch of the Y-shaped tube and the head B so that the valve is closed when the syringe piston at the head B is in a stopped state.
- the switching operation of the valves is complicated and the switching is sometimes forgotten.
- it is possible to perform the switching of the valves automatically and electrically it is not preferable to provide a drive unit of such a switching in the midway through a substantially soft and light tube because the balance of the device configuration become worse.
- the device can be made simple and compact, but the backward-moving action of the syringe piston cannot be performed.
- a pressure in the forward direction is applied to the syringe piston at the head B so as to resist the pressure from the side of the head A when the syringe piston at the head B is in a stopped state, the axis of rotation of the motor continues to be in a stopped state while electricity is being supplied to the motor, and there arises a problem of the seizing of the motor.
- the present invention has been devised in order to solve such a problem and it is an object of the present invention to provide an automatic injection device mountable with a plurality of syringes, in which when at least one head is in a state of injection and at least one head is in a stopped state, the backward-moving of the cylinder piston of the stopped head is prevented so as to prevent liquid from undesirably being mixed and the amount thereof from unreliably being injected.
- the present invention is directed to an automatic injection device comprising piston holders holding cylinder pistons and plural systems of heads having a drive mechanism for moving the piston holders forward and backward, whereby the device can hold a plurality of syringes and operates injection or suction in each syringe independently; said device comprising a backward-moving prohibition mechanism for prohibiting the backward-moving of the piston holder of a second head when the piston holder of a first head is in a forward-moving state and the piston holder of the second head is in a stopped state.
- the syringe piston mounted at the second head when the syringe piston mounted at the second head is in a stopped state, even if the piston holder is moved forward for the injection of a chemical solution in the syringe at a the first head, the backward-moving of the syringe piston at the second head can be prevented. Therefore the chemical solution in the syringe of the first head does not flow into the syringe of the second head, thereby the mixture of the chemical solution can effectively prevented.
- a “head” refers to a system of a syringe holding and driving mechanism which can hold a syringe and allow a syringe piston to move forward and backward in order to inject and suck the chemical solution and the like.
- the number of heads provided for the automatic injection device of the present invention is more than two and, though a plurality of heads may form an independent body of equipment, it is preferable that they are usually assembled into the same body of equipment. From among a plurality of heads, a head which allows preventing the unnecessary backward-moving of the piston holder is taken as a second head, and a head which causes the backward-moving of the piston holder of the second head is taken as a first head.
- a plurality of heads corresponding to the above described first or second head may sometimes exist.
- one head can be the first head and yet the second head as well. That is, in relation to other heads, a certain head may be sometimes a first head during a certain action and may be a second head during a different action.
- a double head type having two heads is used quite often and, in this case, the first head is most commonly used for injecting the contrast medium and the second head for injecting the physiological saline solution.
- this device is a multi-head type that holds a plurality of syringes
- at least two of the tips of syringes may be connected using multi way-branched tube.
- FIG. 1 is a view showing an example of an automatic injection device using an electromagnetic brake.
- FIG. 2 is a view showing an example of the automatic injection device using a disc brake.
- FIG. 3 is a view showing an example of the automatic injection device using a ratchet (linear type).
- FIG. 4 is a view showing the automatic injection device using a ratchet (wheel type).
- FIG. 5 is an enlarged view of the wheel type ratchet.
- FIG. 6 is a view showing an example of the automatic injection device using a worm reduction gear.
- FIG. 7 is an enlarged view of a cylindrical worm gear.
- FIG. 8 is a whole view of a double head type automatic injection device.
- FIG. 9 is a view explaining a drive mechanism of a conventional automatic injection device.
- the above-described drive mechanism of the automatic injection device converts the rotational movement of a motor into a linear movement by using a ball screw and the like, as described by reference to FIG. 9 .
- backward-moving prohibition mechanism can be provided in any portion of a transfer route from the motor to the piston holder. That is, depending on the specific embodiment of the invention, the backward-moving prohibition mechanism can be constituted such that either the rotation is prohibited or the linear movement is prohibited.
- the syringe for a contrast medium is mounted on one side of a head A and the syringe for a physiological saline solution is mounted on the other side of a head B.
- the head at the side of the contrast medium can be constituted similarly to the head at the side of the contrast medium as shown in FIG. 9 .
- the head A corresponds to the first head
- the head B corresponds to the second head.
- the head at the side of the contrast medium may also be provided with the backward-moving prohibition mechanism if necessary.
- the main body of the electromagnetic brake 11 is fixed to a frame unit 10 , while the axis (to which a screw gear 7 b is fixed) of a ball screw 8 b is fixed to an armature side of the electromagnetic brake. Linking and separation between the main body and the armature is performed by controlling the coil inside the electromagnetic brake.
- the electromagnetic brake is turned on when the syringe piston at the side of head B is in a stopped state and the syringe piston at the side of the head A is allowed to act, the syringe piston at the side of the head B does not move and there is no risk of sucking the contrast medium.
- the disc brake 12 has a disc 13 and pads 14 , which stops the rotation of the disc by holding the disc 13 between the pads 14 .
- the disc 13 may be clamped by the pads 14 by electrically controlling the disc brake.
- the disc 13 is fixed to the motor gear 6 b , it may be fixed to the screw gear 7 b or fixed to any place of the axis of rotation.
- a ratchet 15 is provided on a cylinder portion 19 of a ball nut unit 9 b and fitted into a ratchet claw of a ratchet pole 16 , making it possible to move forward the syringe piston and prohibit the backward-moving thereof. That is, when at least the motor at the side of the head B is stopped and the ratchet is allowed to engage with the ratchet claw, there is no backward-moving of the syringe piston nor a backward flow.
- FIG. 3 ( b ) cross-sectional view at line A-A in FIG. 3 ( a )
- a state of the ratchet being engaged with the ratchet claw and a physical relationship of the rotary solenoid 17 are shown.
- ratchet is provided is not limited to this example, and if it is provided on the member which makes reciprocating movement together with the syringe piston, such construction functions similarly to this example.
- a wheel type ratchet 21 as shown in FIG. 5 is used. As shown in FIG. 4 , the wheel type ratchet 21 is fixed to a screw gear 7 b and is engaged with the ratchet pole 16 . Engagement and release of the ratchet is controlled by the rotary solenoid 17 .
- the wheel type ratchet is fixed on the axis of a ball screw 8 b and prevents the ball screw 8 b from rotating in the backward direction when the syringe piston at the side of the head B is in a stopped state.
- the ratchet may be fixed on the axis of the motor 4 b.
- the rotational transmission route itself from the motor to the ball screw is the same as the conventional route shown in FIG. 9 and provided additionally with the backward-moving prohibition mechanism.
- the improvement was placed in the rotational transmission route; that is, the transmission is made only in one way from the motor to the ball screw. That is, the transfer route is constituted such that the rotation (both forward and backward directions) of the motor is transferred to the ball screw, on the other hand, even if a force to rotate the ball screw is applied, the force does not incur the rotation of the motor axis.
- a worm reduction gear 22 using a worm gear is linked to the motor 4 b and reduces the rotation of the motor, at the same time the axis of motor is arranged such that it is not rotated by the rotational force from the side of the ball screw.
- a cylindrical worm gear 25 comprising a cylindrical worm 23 and a worm wheel 24 is provided as shown in FIG. 7 , and the axis of motor is linked to the axis of the cylindrical worm 23 , and the central axis of the worm wheel 24 is linked to the axis of the motor gear 6 b .
- the rotation of the cylindrical worm 23 is transferred to the worm wheel 24 due to the characteristic of the cylindrical worm gear, but it is not possible to rotate the cylindrical worm 23 even if the wheel worm tries to rotate.
- the constitution of the worm gear is not limited to this example.
- the axis of the worm wheel 24 may be joined to the axis of the ball screw 8 b so as to be rotated by the cylindrical worm 23 .
- an automatic injection device mountable with a plurality of syringes wherein, when at least one head is in an injecting state and at least one head is in a stopped state, the backward-moving of the syringe piston of the stopped head is prevented so as to prevent liquid from being undesirably mixed and the injection amount thereof from becoming less accurate.
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- 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)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
An automatic injection device has piston holders holding cylinder pistons and plural systems of heads having a drive mechanism for moving the piston holders forward and backward so that the device can hold a plurality of syringes and operates injection or suction in each syringe independently. This device also has a mechanism for prohibiting the backward-moving of the piston holder of a second head when the piston holder of a first head is in a forward-moving state and the piston holder of the second head is in a stopped state. This structure effectively prevents liquid from being undesirably mixed and the injection amount thereof from becoming less accurate.
Description
- 1. Field of the Invention
- The present invention relates to a contrast medium injection device used for X-ray CT image diagnosis, MRI image diagnosis and the like.
- 2. Description of the Related Art
- A contrast medium is used for the diagnosis of X-ray CT (computed tomography) images, MRI, angio-images (angiographic images) and the like. The contrast medium is a liquid having high viscosity and the injection thereof by means of a manual power takes a lot of time and labor so that in recent years automatic contrast medium injection devices have come to be used.
- An
automatic injection device 100 ofFIG. 8 is an example of such devices, and since it can be mounted with two syringes, it is referred to as a double-head type.FIG. 9 shows a typical mechanism of the automatic injection device. A syringe 1 a for the contrast medium is set at the side of a head A, asyringe 1 b for a physiological saline solution is set at the side of a head B, and a Y-shaped tube 2 is connected to the tips of the two syringes. A catheter is connected to the tip of the Y-shaped tube and can be injected with the contrast medium and the physiological saline solution. - The physiological saline solution is used mainly for flushing inside the tube in order to prevent blood from coagulating inside the catheter and the tube after the contrast medium was injected. It is also used for the purpose of diluting the contrast medium.
- As for the essential action of the device, injection of a required amount of the contrast medium is performed by forwarding a syringe piston of the head A while a syringe piston at the head B stopped, and then after the side of the head A is stopped, the side of the head B is moved forward to perform flushing with the physiological saline solution. In order to dilute the contrast medium, both cylinder pistons of the head A and the head B are moved forward so as to mix the liquid of both heads A and B in the Y-shaped tube (i.e. three way-branched tube).
- In the automatic injection device of
FIGS. 8 and 9 , rotations ofmotors motor gears gear heads screw gears ball screws ball screws ball nut units ball screws piston holders - However, since the contrast medium has high viscosity, and high pressure is necessary for the injection, specifically when the contrast medium is injected, the high pressure is also transferred to the side of the head B via the Y-shaped tube. Therefore, in the case of the device using a mechanism having an extremely small frictional factor such as that of the ball screw, there was the possibility that the syringe piston at the side of the head B is pushed and forced to move backward by high pressure and the contrast medium is sucked by the head B.
- For this reason, an idea can be conceived that a valve is provided between the Y branch of the Y-shaped tube and the head B so that the valve is closed when the syringe piston at the head B is in a stopped state. However, when a manually operable valve is used for this purpose, the switching operation of the valves is complicated and the switching is sometimes forgotten. Although it is possible to perform the switching of the valves automatically and electrically, it is not preferable to provide a drive unit of such a switching in the midway through a substantially soft and light tube because the balance of the device configuration become worse.
- On the other hand, if a one-way valve is used, the device can be made simple and compact, but the backward-moving action of the syringe piston cannot be performed. Although an idea can be also conceived that a pressure in the forward direction is applied to the syringe piston at the head B so as to resist the pressure from the side of the head A when the syringe piston at the head B is in a stopped state, the axis of rotation of the motor continues to be in a stopped state while electricity is being supplied to the motor, and there arises a problem of the seizing of the motor.
- The present invention has been devised in order to solve such a problem and it is an object of the present invention to provide an automatic injection device mountable with a plurality of syringes, in which when at least one head is in a state of injection and at least one head is in a stopped state, the backward-moving of the cylinder piston of the stopped head is prevented so as to prevent liquid from undesirably being mixed and the amount thereof from unreliably being injected.
- The present invention is directed to an automatic injection device comprising piston holders holding cylinder pistons and plural systems of heads having a drive mechanism for moving the piston holders forward and backward, whereby the device can hold a plurality of syringes and operates injection or suction in each syringe independently; said device comprising a backward-moving prohibition mechanism for prohibiting the backward-moving of the piston holder of a second head when the piston holder of a first head is in a forward-moving state and the piston holder of the second head is in a stopped state.
- According to the present invention, when the syringe piston mounted at the second head is in a stopped state, even if the piston holder is moved forward for the injection of a chemical solution in the syringe at a the first head, the backward-moving of the syringe piston at the second head can be prevented. Therefore the chemical solution in the syringe of the first head does not flow into the syringe of the second head, thereby the mixture of the chemical solution can effectively prevented.
- In the present invention, a “head” refers to a system of a syringe holding and driving mechanism which can hold a syringe and allow a syringe piston to move forward and backward in order to inject and suck the chemical solution and the like. The number of heads provided for the automatic injection device of the present invention is more than two and, though a plurality of heads may form an independent body of equipment, it is preferable that they are usually assembled into the same body of equipment. From among a plurality of heads, a head which allows preventing the unnecessary backward-moving of the piston holder is taken as a second head, and a head which causes the backward-moving of the piston holder of the second head is taken as a first head. Hence, in the case of a multi-head with the number of heads being more than three, a plurality of heads corresponding to the above described first or second head may sometimes exist. Moreover, there are some cases where one head can be the first head and yet the second head as well. That is, in relation to other heads, a certain head may be sometimes a first head during a certain action and may be a second head during a different action.
- In a normal application, a double head type having two heads is used quite often and, in this case, the first head is most commonly used for injecting the contrast medium and the second head for injecting the physiological saline solution.
- In case that this device is a multi-head type that holds a plurality of syringes, at least two of the tips of syringes may be connected using multi way-branched tube.
-
FIG. 1 is a view showing an example of an automatic injection device using an electromagnetic brake. -
FIG. 2 is a view showing an example of the automatic injection device using a disc brake. -
FIG. 3 is a view showing an example of the automatic injection device using a ratchet (linear type). -
FIG. 4 is a view showing the automatic injection device using a ratchet (wheel type). -
FIG. 5 is an enlarged view of the wheel type ratchet. -
FIG. 6 is a view showing an example of the automatic injection device using a worm reduction gear. -
FIG. 7 is an enlarged view of a cylindrical worm gear. -
FIG. 8 is a whole view of a double head type automatic injection device. -
FIG. 9 is a view explaining a drive mechanism of a conventional automatic injection device. -
- 1 a . . . Syringe for Contrast Medium
- 1 b . . . Syringe for Physiological saline Solution
- 2 . . . Y-Shaped Tube
- 3 a, 3 b . . . Piston Holder
- 4 a, 4 b . . . Motor
- 5 a, 5 b . . . Gear Head
- 6 a, 6 b . . . Motor Gear
- 7 a, 7 b . . . Screw Gear
- 8 a, 8 b . . . Ball Screw
- 9 a, 9 b . . . Ball Nut Unit
- 10 . . . Frame Unit
- 11 . . . Electromagnetic Brake
- 12 . . . Disc Brake
- 13 . . . Disc
- 14 . . . Pad
- 15 . . . Ratchet
- 16 . . . Ratchet Pole
- 17 . . . Rotary Solenoid
- 19 . . . Cylinder Portion of Ball Nut Unit
- 21 . . . Wheel Type Ratchet
- 22 . . . Worm Reduction Gear
- 23 . . . Cylindrical Worm
- 24 . . . Worm Wheel
- 25 . . . Cylindrical Worm Gear
- 100 . . . Automatic Injection Device
- In general, in order to move a piston holder forward and backward, the above-described drive mechanism of the automatic injection device converts the rotational movement of a motor into a linear movement by using a ball screw and the like, as described by reference to
FIG. 9 . Hence, backward-moving prohibition mechanism can be provided in any portion of a transfer route from the motor to the piston holder. That is, depending on the specific embodiment of the invention, the backward-moving prohibition mechanism can be constituted such that either the rotation is prohibited or the linear movement is prohibited. - Referring to a double head type chemical solution injection device mountable with two syringes, a description will be made below. As shown in
FIG. 9 , the syringe for a contrast medium is mounted on one side of a head A and the syringe for a physiological saline solution is mounted on the other side of a head B. In the same drawings described below, though only the head at the side of the physiological saline solution (at the side of the head B) will be shown, the head at the side of the contrast medium can be constituted similarly to the head at the side of the contrast medium as shown inFIG. 9 . In this case, the head A corresponds to the first head, and the head B corresponds to the second head. The head at the side of the contrast medium may also be provided with the backward-moving prohibition mechanism if necessary. - An example using an electromagnetic brake as backward-moving prohibition mechanism will be described below with reference to
FIG. 1 . - In this example, the main body of the electromagnetic brake 11 is fixed to a
frame unit 10, while the axis (to which ascrew gear 7 b is fixed) of aball screw 8 b is fixed to an armature side of the electromagnetic brake. Linking and separation between the main body and the armature is performed by controlling the coil inside the electromagnetic brake. - When a syringe piston at the side of the head B is moved forward of backward, the main body and the armature are separated each other (i.e. contact is released), thereby the
ball screw 8 b can rotate freely by receiving the rotation of amotor 4 b. When the electromagnetic brake is turned on, the main body and the armature is linked (i.e. contact is attained), thereby the rotation of the axis of theball screw 8 b is fixed. Hence, if the electromagnetic brake is turned on when the syringe piston at the side of head B is in a stopped state and the syringe piston at the side of the head A is allowed to act, the syringe piston at the side of the head B does not move and there is no risk of sucking the contrast medium. - An example using a disc brake as backward-moving prohibition mechanism will be described below with reference to
FIG. 2 . - The
disc brake 12 has adisc 13 andpads 14, which stops the rotation of the disc by holding thedisc 13 between thepads 14. When the piston syringe at the head B is moved forward and backward, the space between thedisc 13 and thepads 14 is left open so that themotor gear 6 b can freely rotate. When the backward-moving of the syringe piston at the head B is desired to be prohibited, thedisc 13 may be clamped by thepads 14 by electrically controlling the disc brake. - In this example, though the
disc 13 is fixed to themotor gear 6 b, it may be fixed to thescrew gear 7 b or fixed to any place of the axis of rotation. - In the above-described
embodiments 1 and 2, though a method of using the brake was described, other types of brakes other than the electromagnetic brake and the disc brake may be used if the movement in the backward direction can be prevented. Moreover, though theembodiments 1 and 2 are constituted such that the rotation is stopped, they may be also constituted such that the linear movement is stopped. - An example using a ratchet mechanism as the backward-moving prohibition mechanism will be described below with reference to
FIG. 3 . - As shown in
FIG. 3 (a), aratchet 15 is provided on acylinder portion 19 of aball nut unit 9 b and fitted into a ratchet claw of aratchet pole 16, making it possible to move forward the syringe piston and prohibit the backward-moving thereof. That is, when at least the motor at the side of the head B is stopped and the ratchet is allowed to engage with the ratchet claw, there is no backward-moving of the syringe piston nor a backward flow. When the syringe piston allows to move backward, arotary solenoid 17 is electrically controlled so as to rotate theratchet pole 16, and the engagement of the ratchet and the ratchet claw is released. InFIG. 3 (b) (cross-sectional view at line A-A inFIG. 3 (a)), a state of the ratchet being engaged with the ratchet claw and a physical relationship of therotary solenoid 17 are shown. - The place where the ratchet is provided is not limited to this example, and if it is provided on the member which makes reciprocating movement together with the syringe piston, such construction functions similarly to this example.
- In the embodiment 3, the example using the linear type ratchet was shown, but in the embodiment 4, a
wheel type ratchet 21 as shown inFIG. 5 is used. As shown inFIG. 4 , thewheel type ratchet 21 is fixed to ascrew gear 7 b and is engaged with theratchet pole 16. Engagement and release of the ratchet is controlled by therotary solenoid 17. - In this example, the wheel type ratchet is fixed on the axis of a
ball screw 8 b and prevents theball screw 8 b from rotating in the backward direction when the syringe piston at the side of the head B is in a stopped state. However, the ratchet may be fixed on the axis of themotor 4 b. - In the devices of the
embodiments 1 to 4, examples were shown wherein the rotational transmission route itself from the motor to the ball screw is the same as the conventional route shown inFIG. 9 and provided additionally with the backward-moving prohibition mechanism. In the embodiment 5, the improvement was placed in the rotational transmission route; that is, the transmission is made only in one way from the motor to the ball screw. That is, the transfer route is constituted such that the rotation (both forward and backward directions) of the motor is transferred to the ball screw, on the other hand, even if a force to rotate the ball screw is applied, the force does not incur the rotation of the motor axis. - In an example as shown in
FIG. 6 , aworm reduction gear 22 using a worm gear is linked to themotor 4 b and reduces the rotation of the motor, at the same time the axis of motor is arranged such that it is not rotated by the rotational force from the side of the ball screw. Inside theworm reduction gear 22, acylindrical worm gear 25 comprising acylindrical worm 23 and aworm wheel 24 is provided as shown inFIG. 7 , and the axis of motor is linked to the axis of thecylindrical worm 23, and the central axis of theworm wheel 24 is linked to the axis of themotor gear 6 b. In this constitution, the rotation of thecylindrical worm 23 is transferred to theworm wheel 24 due to the characteristic of the cylindrical worm gear, but it is not possible to rotate thecylindrical worm 23 even if the wheel worm tries to rotate. - The constitution of the worm gear is not limited to this example. For example, the axis of the
worm wheel 24 may be joined to the axis of theball screw 8 b so as to be rotated by thecylindrical worm 23. - As described above, according to the present invention, an automatic injection device mountable with a plurality of syringes can be provided wherein, when at least one head is in an injecting state and at least one head is in a stopped state, the backward-moving of the syringe piston of the stopped head is prevented so as to prevent liquid from being undesirably mixed and the injection amount thereof from becoming less accurate.
Claims (15)
1. An automatic injection device comprising piston holders holding cylinder pistons and plural systems of heads having a drive mechanism for moving the piston holders forward and backward, whereby the device can hold a plurality of syringes and operates injection or suction in each syringe independently,
said device comprising brake, wherein said brake is turned on when the piston holder of a first head is in a forward-moving state and the piston holder of a second head is in a stopped state, whereby backward-moving of the second head is prohibited, and wherein said brake is turned off when the second head is in a moving state.
2. The automatic injection device according to claim 1 , wherein said drive mechanism has a motor and mechanism for converting the rotation of the motor into a linear movement, and said brake prohibits the axis of rotation to rotate in the backward direction.
3. The automatic injection device according to claim 1 , wherein said drive mechanism has a motor and mechanism for converting the rotation of the motor into a linear movement, and said brake prohibits the linear movement in the backward direction.
4. The automatic injection device according to claim 1 , wherein said brake is a disc brake.
5. The automatic injection device according to claim 1 , wherein said device is a double head type with the number of systems of heads being two and holds two syringes.
6. The automatic injection device according to claim 1 , wherein said device holds a syringe for injecting a contrast medium and another syringe for injecting a physiological saline solution.
7. The automatic injection device according to claim 5 , wherein said device holds a syringe for injecting a contrast medium at the first head and a syringe for injecting a physiological saline solution at the second head.
8. The automatic injection device according to claim 5 , wherein the tips of the two syringes are connected to a three way-branched tube.
9. The automatic injection device according to claim 7 , wherein the tips of the two syringes are connected to a three way-branched tube.
10. An automatic injection device comprising piston holders holding cylinder pistons and plural systems of heads having a drive mechanism for moving the piston holders forward and backward, whereby the device can hold a plurality of syringes and operates injection or suction in each syringe independently,
said device comprising a first head and a second head, wherein the force of a motor for driving the second head is transmitted to a piston holder of the second head via a worm gear while a worm gear is not provided in the transmission from a motor for driving a piston holder of the first head.
11. The automatic injection device according to claim 1 , wherein said device is a double head type with the number of systems of heads being two and holds two syringes.
12. The automatic injection device according to claim 1 , wherein said device holds a syringe for injecting a contrast medium and another syringe for injecting a physiological saline solution.
13. The automatic injection device according to claim 11 , wherein said device holds a syringe for injecting a contrast medium at the first head and a syringe for injecting a physiological saline solution at the second head.
14. The automatic injection device according to claim 11 , wherein the tips of the two syringes are connected to a three way-branched tube.
15. The automatic injection device according to claim 13 , wherein the tips of the two syringes are connected to a three way-branched tube.
Priority Applications (1)
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US11/068,878 US20050143653A1 (en) | 2000-10-03 | 2005-03-02 | Automatic injection device |
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US09/963,427 US6917828B2 (en) | 2000-10-03 | 2001-09-27 | Automatic injection device |
US11/068,878 US20050143653A1 (en) | 2000-10-03 | 2005-03-02 | Automatic injection device |
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JP (1) | JP4975208B2 (en) |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100331678A1 (en) * | 2008-02-25 | 2010-12-30 | Fago Frank M | Multi-Syringe Power Injector using Single Drive Ram |
US20110190693A1 (en) * | 2010-01-29 | 2011-08-04 | Nippon Shika Yakuhin Kk. | Computer controlled electric syringe |
US20120095447A1 (en) * | 2010-10-19 | 2012-04-19 | Occam Scientific, Llc | Apparatus for rotating medical devices, systems including the apparatus, and associated methods |
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WO2012072569A1 (en) * | 2010-11-29 | 2012-06-07 | Sanofi-Aventis Deutschland Gmbh | Drug delivery device |
US20130237924A1 (en) * | 2010-11-29 | 2013-09-12 | Sanofi-Aventis Deutschland Gmbh | Drug delivery device having linked dose dial components |
US8945051B2 (en) | 2009-07-24 | 2015-02-03 | Bayer Medical Care Inc. | Multi-fluid medical injector system and methods of operation |
US9107691B2 (en) | 2010-10-19 | 2015-08-18 | Distal Access, Llc | Apparatus for rotating medical devices, systems including the apparatus, and associated methods |
US20160325041A1 (en) * | 2014-01-13 | 2016-11-10 | Novo Nordisk A/S | Transmission Arrangement for Motorized Drug Delivery Device |
US11000307B2 (en) | 2010-10-19 | 2021-05-11 | Minerva Surgical Inc. | Apparatus for rotating medical devices, systems including the apparatus, and associated methods |
US11446050B2 (en) | 2014-04-28 | 2022-09-20 | Minerva Surgical, Inc. | Tissue resectors with cutting wires, hand operated tissue resecting systems and associated methods |
Families Citing this family (92)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6796964B2 (en) * | 1997-11-19 | 2004-09-28 | Eidson Associates, Inc | Automatic veterinary medicament delivery system |
US6663602B2 (en) | 2000-06-16 | 2003-12-16 | Novo Nordisk A/S | Injection device |
US8909325B2 (en) | 2000-08-21 | 2014-12-09 | Biosensors International Group, Ltd. | Radioactive emission detector equipped with a position tracking system and utilization thereof with medical systems and in medical procedures |
US8489176B1 (en) | 2000-08-21 | 2013-07-16 | Spectrum Dynamics Llc | Radioactive emission detector equipped with a position tracking system and utilization thereof with medical systems and in medical procedures |
US8565860B2 (en) | 2000-08-21 | 2013-10-22 | Biosensors International Group, Ltd. | Radioactive emission detector equipped with a position tracking system |
DE20200885U1 (en) | 2002-01-22 | 2003-05-28 | Braun Melsungen Ag | Syringe pump with piston brake |
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US20040122438A1 (en) * | 2002-12-23 | 2004-06-24 | Boston Scientific Corporation | Flex-tight interlocking connection tubing for delivery of bone cements/biomaterials for vertebroplasty |
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US7112205B2 (en) * | 2003-06-17 | 2006-09-26 | Boston Scientific Scimed, Inc. | Apparatus and methods for delivering compounds into vertebrae for vertebroplasty |
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WO2005007220A1 (en) | 2003-07-18 | 2005-01-27 | Nemoto Kyorindo Co., Ltd. | Medicine infuser for displaying image of entered infusion condition |
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US8586932B2 (en) | 2004-11-09 | 2013-11-19 | Spectrum Dynamics Llc | System and method for radioactive emission measurement |
WO2006051531A2 (en) | 2004-11-09 | 2006-05-18 | Spectrum Dynamics Llc | Radioimaging |
US9040016B2 (en) | 2004-01-13 | 2015-05-26 | Biosensors International Group, Ltd. | Diagnostic kit and methods for radioimaging myocardial perfusion |
US7968851B2 (en) | 2004-01-13 | 2011-06-28 | Spectrum Dynamics Llc | Dynamic spect camera |
US9470801B2 (en) | 2004-01-13 | 2016-10-18 | Spectrum Dynamics Llc | Gating with anatomically varying durations |
US8571881B2 (en) | 2004-11-09 | 2013-10-29 | Spectrum Dynamics, Llc | Radiopharmaceutical dispensing, administration, and imaging |
US7771389B2 (en) * | 2004-02-17 | 2010-08-10 | Mallinckrodt Inc. | Injector auto purge |
US20050182322A1 (en) * | 2004-02-17 | 2005-08-18 | Liebel-Flarsheim Company | Injector auto purge |
KR100763051B1 (en) * | 2004-03-30 | 2007-10-04 | 일라이 릴리 앤드 캄파니 | Medication dispensing apparatus with spring-driven locking feature enabled by administration of final dose |
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PL1804865T3 (en) | 2004-10-21 | 2010-03-31 | Novo Nordisk As | Dial-down mechanism for wind-up pen |
US9943274B2 (en) | 2004-11-09 | 2018-04-17 | Spectrum Dynamics Medical Limited | Radioimaging using low dose isotope |
US9316743B2 (en) | 2004-11-09 | 2016-04-19 | Biosensors International Group, Ltd. | System and method for radioactive emission measurement |
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US8000773B2 (en) | 2004-11-09 | 2011-08-16 | Spectrum Dynamics Llc | Radioimaging |
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EP1839698A4 (en) * | 2004-11-11 | 2010-06-30 | Nemoto Kyorindo Co Ltd | Tube connection apparatus |
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US20080281330A1 (en) * | 2005-03-17 | 2008-11-13 | Ferrante Joseph M | Medical Securing Member Placement System |
US20090043264A1 (en) | 2005-04-24 | 2009-02-12 | Novo Nordisk A/S | Injection Device |
US7938851B2 (en) * | 2005-06-08 | 2011-05-10 | Xtent, Inc. | Devices and methods for operating and controlling interventional apparatus |
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US8837793B2 (en) | 2005-07-19 | 2014-09-16 | Biosensors International Group, Ltd. | Reconstruction stabilizer and active vision |
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US20090054766A1 (en) * | 2006-03-14 | 2009-02-26 | Nemoto Kyorindo Co., Ltd. | Medical image system |
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JP5253387B2 (en) * | 2006-05-18 | 2013-07-31 | ノボ・ノルデイスク・エー/エス | Injection device with mode locking means |
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US8610075B2 (en) | 2006-11-13 | 2013-12-17 | Biosensors International Group Ltd. | Radioimaging applications of and novel formulations of teboroxime |
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US8521253B2 (en) | 2007-10-29 | 2013-08-27 | Spectrum Dynamics Llc | Prostate imaging |
US9044542B2 (en) | 2007-12-21 | 2015-06-02 | Carticept Medical, Inc. | Imaging-guided anesthesia injection systems and methods |
US8545440B2 (en) | 2007-12-21 | 2013-10-01 | Carticept Medical, Inc. | Injection system for delivering multiple fluids within the anatomy |
EP2231230A4 (en) | 2007-12-21 | 2013-01-23 | Carticept Medical Inc | Articular injection system |
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US9731067B2 (en) * | 2014-11-25 | 2017-08-15 | Medtronic Minimed, Inc. | Mechanical injection pump and method of use |
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Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2875760A (en) * | 1954-09-11 | 1959-03-03 | Haber Christian | Injection equipment |
US3631847A (en) * | 1966-03-04 | 1972-01-04 | James C Hobbs | Method and apparatus for injecting fluid into the vascular system |
US4044757A (en) * | 1976-01-14 | 1977-08-30 | The Kendall Company | Cholangiography device and method |
US4563175A (en) * | 1983-12-19 | 1986-01-07 | Lafond Margaret | Multiple syringe pump |
US4769885A (en) * | 1985-12-19 | 1988-09-13 | Yamazaki Mazak Corporation | Eccentric tool rest |
US4781548A (en) * | 1987-04-10 | 1988-11-01 | Alderson Richard K | Infusion pump system and conduit therefor |
US4867742A (en) * | 1986-06-06 | 1989-09-19 | Reynaldo Calderon | Retrograde perfusion |
US5034004A (en) * | 1987-06-19 | 1991-07-23 | The University Of Melbourne | Infusion pump and drive systems therefor |
US5078691A (en) * | 1990-03-01 | 1992-01-07 | Hamacher Edward N | Multiple-dose fluid delivery system and method |
US5236424A (en) * | 1992-06-05 | 1993-08-17 | Cardiac Pathways Corporation | Catheter with retractable cannula for delivering a plurality of chemicals |
US5236417A (en) * | 1992-09-22 | 1993-08-17 | Utah Pioneer Medical, Inc. | Cholangiography catheter apparatus and method |
US5298023A (en) * | 1991-03-08 | 1994-03-29 | Habley Medical Technology Corporation | Multiple pharmaceutical dispenser with accumulator |
US5472403A (en) * | 1993-05-11 | 1995-12-05 | The Regents Of The University Of California | Device for automatic injection of radionuclide |
US5775782A (en) * | 1996-02-23 | 1998-07-07 | Imra America, Inc. | Self-energizing vehicle brake system with control arrangement for eliminating brake pad friction fluctuation affects |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS492552B1 (en) * | 1968-06-18 | 1974-01-21 | ||
FR2171971B1 (en) * | 1972-02-17 | 1975-03-21 | Massy Paul | |
JPS61501128A (en) * | 1984-01-25 | 1986-06-12 | イメド コ−ポレ−シヨン | Syringe hydraulic drive device |
FR2594341B1 (en) * | 1986-02-14 | 1990-08-10 | Charton Jean Pierre | INJECTOR APPARATUS FOR THE PRACTICE OF MESOTHERAPY |
GR1000159B (en) * | 1989-06-15 | 1991-10-10 | Micrel Kentro Efarm Mikroilekt | Syringe pump |
JP3223684B2 (en) * | 1993-12-31 | 2001-10-29 | ニプロ株式会社 | Chemical injection device |
-
2000
- 2000-10-03 JP JP2000303717A patent/JP4975208B2/en not_active Expired - Lifetime
-
2001
- 2001-09-27 US US09/963,427 patent/US6917828B2/en not_active Expired - Lifetime
- 2001-09-28 EP EP01402510A patent/EP1195172A3/en not_active Ceased
- 2001-09-28 KR KR1020010060613A patent/KR100795746B1/en not_active IP Right Cessation
- 2001-09-29 CN CNA2006101374623A patent/CN1981884A/en active Pending
- 2001-09-29 CN CN01141636A patent/CN1346681A/en active Pending
-
2002
- 2002-09-13 HK HK02106702.4A patent/HK1045658A1/en unknown
-
2005
- 2005-03-02 US US11/068,878 patent/US20050143653A1/en not_active Abandoned
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2875760A (en) * | 1954-09-11 | 1959-03-03 | Haber Christian | Injection equipment |
US3631847A (en) * | 1966-03-04 | 1972-01-04 | James C Hobbs | Method and apparatus for injecting fluid into the vascular system |
US4044757A (en) * | 1976-01-14 | 1977-08-30 | The Kendall Company | Cholangiography device and method |
US4563175A (en) * | 1983-12-19 | 1986-01-07 | Lafond Margaret | Multiple syringe pump |
US4769885A (en) * | 1985-12-19 | 1988-09-13 | Yamazaki Mazak Corporation | Eccentric tool rest |
US4867742A (en) * | 1986-06-06 | 1989-09-19 | Reynaldo Calderon | Retrograde perfusion |
US4781548A (en) * | 1987-04-10 | 1988-11-01 | Alderson Richard K | Infusion pump system and conduit therefor |
US5034004A (en) * | 1987-06-19 | 1991-07-23 | The University Of Melbourne | Infusion pump and drive systems therefor |
US5078691A (en) * | 1990-03-01 | 1992-01-07 | Hamacher Edward N | Multiple-dose fluid delivery system and method |
US5298023A (en) * | 1991-03-08 | 1994-03-29 | Habley Medical Technology Corporation | Multiple pharmaceutical dispenser with accumulator |
US5236424A (en) * | 1992-06-05 | 1993-08-17 | Cardiac Pathways Corporation | Catheter with retractable cannula for delivering a plurality of chemicals |
US5236417A (en) * | 1992-09-22 | 1993-08-17 | Utah Pioneer Medical, Inc. | Cholangiography catheter apparatus and method |
US5472403A (en) * | 1993-05-11 | 1995-12-05 | The Regents Of The University Of California | Device for automatic injection of radionuclide |
US5775782A (en) * | 1996-02-23 | 1998-07-07 | Imra America, Inc. | Self-energizing vehicle brake system with control arrangement for eliminating brake pad friction fluctuation affects |
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US20100331678A1 (en) * | 2008-02-25 | 2010-12-30 | Fago Frank M | Multi-Syringe Power Injector using Single Drive Ram |
US10751465B2 (en) | 2009-07-24 | 2020-08-25 | Bayer Healthcare Llc | Multi-fluid medical injector system and methods of operation |
US9474857B2 (en) | 2009-07-24 | 2016-10-25 | Bayer Healthcare Llc | Multi-fluid medical injector system and methods of operation |
US8945051B2 (en) | 2009-07-24 | 2015-02-03 | Bayer Medical Care Inc. | Multi-fluid medical injector system and methods of operation |
US20110190693A1 (en) * | 2010-01-29 | 2011-08-04 | Nippon Shika Yakuhin Kk. | Computer controlled electric syringe |
US8491522B2 (en) | 2010-01-29 | 2013-07-23 | Nippon Shika Yakuhin Co., Ltd. | Computer controlled electric syringe |
US8845621B2 (en) * | 2010-10-19 | 2014-09-30 | Distal Access, Llc | Apparatus for rotating medical devices, systems including the apparatus, and associated methods |
US9107691B2 (en) | 2010-10-19 | 2015-08-18 | Distal Access, Llc | Apparatus for rotating medical devices, systems including the apparatus, and associated methods |
US20120095447A1 (en) * | 2010-10-19 | 2012-04-19 | Occam Scientific, Llc | Apparatus for rotating medical devices, systems including the apparatus, and associated methods |
US11000307B2 (en) | 2010-10-19 | 2021-05-11 | Minerva Surgical Inc. | Apparatus for rotating medical devices, systems including the apparatus, and associated methods |
CN103338799A (en) * | 2010-11-29 | 2013-10-02 | 赛诺菲-安万特德国有限公司 | Drug delivery device |
US20130237924A1 (en) * | 2010-11-29 | 2013-09-12 | Sanofi-Aventis Deutschland Gmbh | Drug delivery device having linked dose dial components |
WO2012072569A1 (en) * | 2010-11-29 | 2012-06-07 | Sanofi-Aventis Deutschland Gmbh | Drug delivery device |
US9248239B2 (en) * | 2010-11-29 | 2016-02-02 | Sanofi-Aventis Deutschland Gmbh | Drug delivery device having linked dose dial components |
WO2012072535A1 (en) * | 2010-11-29 | 2012-06-07 | Sanofi-Aventis Deutschland Gmbh | Drug delivery device having linked dose dial components |
US20160325041A1 (en) * | 2014-01-13 | 2016-11-10 | Novo Nordisk A/S | Transmission Arrangement for Motorized Drug Delivery Device |
US11446050B2 (en) | 2014-04-28 | 2022-09-20 | Minerva Surgical, Inc. | Tissue resectors with cutting wires, hand operated tissue resecting systems and associated methods |
Also Published As
Publication number | Publication date |
---|---|
KR100795746B1 (en) | 2008-01-17 |
EP1195172A3 (en) | 2003-09-17 |
KR20020026847A (en) | 2002-04-12 |
EP1195172A2 (en) | 2002-04-10 |
US20020049415A1 (en) | 2002-04-25 |
CN1981884A (en) | 2007-06-20 |
HK1045658A1 (en) | 2002-12-06 |
US6917828B2 (en) | 2005-07-12 |
CN1346681A (en) | 2002-05-01 |
JP4975208B2 (en) | 2012-07-11 |
JP2002102343A (en) | 2002-04-09 |
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Legal Events
Date | Code | Title | Description |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |