WO2013153812A1

WO2013153812A1 - Agitating injection device

Info

Publication number: WO2013153812A1
Application number: PCT/JP2013/002458
Authority: WO
Inventors: 根本　茂
Original assignee: 株式会社根本杏林堂
Priority date: 2012-04-12
Filing date: 2013-04-11
Publication date: 2013-10-17
Also published as: JP6463628B2; JPWO2013153812A1; CN104220110A

Abstract

Provided is an agitating injection device that injects a drug solution and agitates said drug solution inside a loaded syringe. Said agitating injection device is provided with the following: a first drive unit that propels a first drug solution out of a first syringe filled with said first drug solution; a first holding unit that immobilizes and holds the first syringe; a support member that supports the first holding unit; and an agitation unit that is connected to the first holding unit and moves same in order to agitate the first drug solution inside the first syringe.

Description

Stirring injection device

The present invention relates to an injection device for injecting a chemical solution, and relates to an injection device for stirring for stirring the chemical solution in a mounted syringe.

There is a contrast medium made of a suspension as a chemical solution used for imaging by a medical imaging apparatus, for example, an ultrasonic diagnostic apparatus. This contrast agent contains microbubbles, solid particles and the like in order to scatter ultrasonic waves. When performing an ultrasonic diagnosis, a syringe filled with the contrast agent is attached to an injection device, and imaging is performed after the contrast agent is injected into the patient's body. The ultrasonic diagnostic apparatus captures an image of the inside of a body by analyzing ultrasonic waves that are incident on and reflected by microbubbles or solid particles. However, depending on the elapsed time after the syringe is mounted on the injection device, the contrast agent may be separated, and the concentration of the contrast agent content may be biased.

Therefore, Patent Document 1 discloses an injection system for maintaining the suspension in the syringe of the injection device in a sufficiently stirred state. The injection system is an injection system for treating a patient by injecting a suspension of microparticles in an aqueous liquid carrier. The injection system consists of a syringe capable of filling the barrel with suspension and automatic electric drive means that controllably move to inject the suspension into the patient. The injection system also has a stirring means for holding the syringe in the system and stirring the fine particles in the suspension. This stirring means maintains the uniformity of the suspension by preventing the separation of the fine particles due to gravity or buoyancy by the movement given to the syringe.

More specifically, Patent Document 1 discloses a roller that is in contact with a syringe barrel in order to give continuous rotation to the syringe barrel as a stirring means. The roller holds the syringe disposed on the roller and rotates the held syringe. Thereby, the roller can stir the suspension in the barrel of the syringe. Patent Document 1 discloses two brackets that support a syringe in a rotatable manner as stirring means. These brackets hold the syringe and rotate the syringe. Thereby, the bracket stirs the suspension in the barrel of the syringe.

Japanese Patent No. 3665566

However, the injection system disclosed in Patent Document 1 has the following problems. That is, when a syringe is held by being placed on a roller, the syringe is likely to be displaced and may be detached from the injection device. In addition, when injecting, in order to prevent injecting air into the patient, the syringe is mounted with the syringe mounting side (the syringe tip side) facing the floor surface. Sometimes. In this case, the syringe placed on the roller shifts due to gravity and comes off the injection device.

Also, when the syringe is held by a blanket, the held syringe is easily detached. That is, since the syringe is rotatably held, the syringe cannot be fixed to the blanket that is also a holding means. Furthermore, since it is necessary to observe the chemical solution from the outside, it is difficult to provide a member that covers the upper surface of the syringe in order to fix the syringe. Therefore, also when hold | maintaining with a blanket, when an impact is added, a syringe will slip | deviate and it may remove | deviate from an injection apparatus or there exists a possibility that the attitude | position of a syringe may incline within an injection apparatus.

Furthermore, in any case, if the syringe is rotated in a state where the tip side of the syringe faces the floor, the posture of the syringe may be tilted in the injection device. And if the attitude | position of a syringe will incline, the force which pushes a piston will be added unevenly with respect to a piston. Therefore, damage to the piston or cylinder may occur, or accurate injection may be difficult. Further, when the syringe is detached from the injection device, the injection of the contrast agent is stopped.

Also, the syringe is held by stirring means. Therefore, the size or shape of the syringe that can be held is limited to the size or shape that the stirring means can accommodate. And in order to mount | wear with the syringe from which a size or a shape differs, you have to exchange a stirring means. However, if the stirring means is purchased and replaced according to the syringe, the cost burden on the user increases. Furthermore, the tip portion of the syringe needs to be kept clean. However, in the form in which the blanket holds the tip portion, the tip portion may become dirty.

In order to solve the above-mentioned problem, an injection device for agitation according to the present invention is an injection device for injecting a chemical solution, the first drive unit for extruding the first chemical solution from a first syringe filled with the first chemical solution, A first holding unit that fixes and holds the first syringe, a support member that supports the first holding unit, and the first drug solution in the first syringe are agitated while being connected to the first holding unit. And a stirring unit for moving the first holding unit.

The stirring injection device of the present invention is an injection device for injecting a chemical solution, a drive unit for pushing out the chemical solution from a syringe filled with the chemical solution, a holding unit for fixing and holding the syringe, and the holding device A support member that supports the unit, and a stirring unit that contacts the outer surface of the syringe at a position spaced from the holding unit and moves the syringe in order to stir the drug solution in the syringe.

According to the stirring injection device of the present invention, the syringe is fixed to and held by the holding unit. Therefore, even if the tip end side of the syringe is directed to the floor surface, it is possible to prevent the syringe from shifting during the stirring operation. In addition, the chemical solution can be agitated while maintaining the tip portion of the syringe in a clean state. In addition, syringes of various sizes or shapes can be attached to the stirring injection device.

Further features of the present invention will become apparent from the following description of embodiments, given by way of example with reference to the accompanying drawings.

It is a schematic perspective view which shows the injection apparatus of 1st Embodiment hold | maintained at the stand. It is a schematic perspective view which shows the head part of the injection apparatus of 1st Embodiment. It is a schematic block diagram which shows the injection apparatus of 1st Embodiment. It is a schematic exploded view which shows the internal structure of a holding | maintenance unit and a stirring unit. It is the schematic which shows the internal structure of a stirring unit. It is a schematic block diagram which shows the injection apparatus of 2nd Embodiment. It is the schematic which shows the injection apparatus of 3rd Embodiment. It is the schematic which shows the injection apparatus of 4th Embodiment. It is the schematic which shows the injection apparatus of 5th Embodiment. It is the schematic which shows the injection apparatus of 6th Embodiment. It is the schematic which shows the mode of the rocking | fluctuation to one direction in 6th Embodiment. It is the schematic which shows the mode of the rocking | fluctuation to the reverse direction in 6th Embodiment. It is the schematic which shows the mode of the rocking | fluctuation in the reverse direction in 7th Embodiment.

Hereinafter, exemplary embodiments for carrying out the present invention will be described in detail with reference to the drawings. However, dimensions, materials, shapes, relative positions of components, and the like described in the following embodiments are arbitrary and can be changed according to the configuration of the apparatus to which the present invention is applied or various conditions. Unless otherwise specified, the scope of the present invention is not limited to the embodiments specifically described in the examples described below.

[First Embodiment]
FIG. 1 shows an injection device (injector) 100 used when a patient's body is imaged by a medical imaging device, for example, an ultrasonic diagnostic device, and a stand 2 that holds an injector head 1 that is a head portion of the injection device. Indicates. The stand 2 has a movable stand base placed on the floor and a stand pole on the stand base. The injector head 1 is held on the top or side of the stand pole. The injector head 1 is held by a stand pole so as to be rotatable in the left-right direction or the up-down direction. Thereby, the injector head 1 has a posture in which the tip side (side where the syringe is mounted) of the injector head 1 is directed to the floor surface, and the rear end side (side where the syringe is not mounted) of the injector head 1 is the floor surface. It can be rotated to the direction it faces. FIG. 1 shows a state in which a syringe is attached to the injector head 1 and preparations for injecting a chemical solution are ready. Therefore, the injector head 1 is inclined so that the tip side of the injector head 1 faces the floor surface.

The injector 100 that injects the chemical solution injects a contrast agent as the first chemical solution and physiological saline as the second chemical solution into the patient. Therefore, as shown in FIG. 2, the injector head 1 fixes the first holding unit 11 for fixing and holding the first syringe 4 filled with the contrast agent, and the second syringe 5 filled with physiological saline. And a second holding unit 12 for holding, and a support arm 14 as a support member for supporting the first holding unit 11 and the second holding unit 12. The internal mechanisms of the first holding unit 11 and the second holding unit 12 are accommodated in the covers of the first holding unit 11 and the second holding unit 12. Further, the injector head 1 includes a stirring unit 13 connected to the first holding unit 11. The internal mechanism of the stirring unit 13 is accommodated in the cover of the stirring unit 13. Then, the stirring unit 13 moves the first holding unit 11 in order to stir the contrast agent in the first syringe 4. The first drive unit 16 that pushes out the contrast agent from the first syringe 4 is provided in the first holding unit 11. A second drive unit 17 that pushes physiological saline from the second syringe 5 is provided in the second holding unit 12.

The first holding unit 11 has a syringe adapter 6. The first syringe 4 is fixed to the first holding unit 11 by holding the cylinder flange 41 of the first syringe 4 on the syringe adapter 6. Thereby, it can prevent that the 1st syringe 4 shifts | deviates from the injector head 1. FIG. The cylinder flange 51 of the second syringe 5 is held by the syringe adapter 6 provided on the support arm 14. Thereby, the second syringe 5 is held by the second holding unit 12. These syringe adapters 6 have a recess, and the

cylinder flanges

41 and 51 are inserted into the recess. Therefore, attachment and removal of the first syringe 4 and the second syringe 5 are very easy.

The syringe adapter 6 is detachably attached to the first holding unit 11 or the support arm 14. And the syringe adapter 6 can be replaced | exchanged according to the size or shape of a syringe. Thereby, syringes of various sizes and shapes can be attached to the injector head 1. Moreover, since the syringe adapter 6 is cheaper than the stirring unit 13, even if the syringe adapter 6 is replaced according to the syringe, the cost burden on the user is small. Further, the syringe adapter 6 is easier to remove and attach than the stirring unit 13. Therefore, it is possible to reduce the time and labor required for the operator during replacement.

The cylinder 42 of the first syringe 4 is supported by the syringe adapter 6 and a cylinder receiving part 110 provided in the first holding unit 11. Further, the cylinder 52 of the second syringe 5 is supported by the syringe adapter 6 and a cylinder receiving portion 120 provided on the support arm 14. The

cylinder receiving portions

110 and 120 protrude outward from the first holding unit 11 or the support arm 14. The

cylinder receivers

110 and 120 have a substantially U-shaped cross section along the outer shape of the

cylinders

42 and 52 and can be exchanged together with the syringe adapter 6. That is, the

cylinder receiving portions

110 and 120 can be exchanged according to the size or shape of the syringe.

The first holding unit 11 has a heater (not shown) that contacts the outer surface of the first syringe 4. The heater is provided in a cylinder receiving part 110 provided in the first holding unit 11 and heats or keeps the cylinder 42 of the first syringe 4. This heater is arranged on the upper surface of the cylinder receiving part 110 or is built in the cylinder receiving part 110. By heating with the heater, convection occurs in the contrast medium in the cylinder 42, and the stirring effect of the contrast medium can be further enhanced. This heating is performed at a temperature that does not cause the microbubbles to collapse. Further, by keeping the contrast medium warm by a heater, a predetermined temperature, for example, a temperature about the human body temperature can be maintained.

A conduit portion 43 is provided at the tip of the first syringe 4, and a conduit portion 53 is provided at the tip of the second syringe 5. And the holding member is not arrange | positioned in the tip vicinity of the 1st syringe 4 and the 2nd syringe 5. FIG. Thereby, the

conduit parts

43 and 53 are not soiled by the holding member. A tube 9 is connected to the

conduit portions

43 and 53 when a chemical solution is injected. The tube 9 includes a first tube 91 connected to the first syringe 4 and a second tube 92 connected to the second syringe 5. The 1st tube 91 and the 2nd tube 92 are connected via the branch part. The tube 9 has a distal end portion 95 connected to a catheter or the like, and a dripping cap is attached to the distal end portion 95.

A first connector 93 is attached to the end of the first tube 91, and a second connector 94 is attached to the conduit portion 43 of the first syringe 4. The second connector 94 is inserted into the first connector 93 and is rotatably connected to the first connector 93. In the first embodiment, the first holding unit 11 swings in a direction that intersects the axial direction of the first syringe 4. However, since the second connector 94 is rotatably connected to the first connector 93, the tube 9 is not twisted. The second connector 94 and the first connector 93 can be screwed together. By screwing, even if the tube 9 moves according to the swing of the first syringe 4, the connection between the second connector 94 and the first connector 93 is not released.

A piston 44 is attached to the first syringe 4, and a piston 54 is attached to the second syringe 5. The rear end of the piston 44 engages with the presser 160 of the first drive unit 16, and the rear end of the piston 54 engages with the presser 170 of the second drive unit 17. The

pressers

160 and 170 advance or retract the

pistons

44 and 54 separately or simultaneously in the axial direction of the syringe. When the

pressers

160 and 170 push the

pistons

44 and 54 toward the tip of the syringe, the

pistons

44 and 54 move forward and the contrast medium and physiological saline in the

cylinders

42 and 52 are pushed out. The extruded contrast agent and physiological saline are injected into the patient's blood vessel through the tube 9 and a catheter or the like connected to the distal end portion 95. In addition, in the chemical solution injection, physiological saline is often injected after contrast agent injection, but the contrast agent and physiological saline can also be injected simultaneously.

When confirming the blood vessel, the release valve 96 of the tube 9 is used. When the release valve 96 is pushed, the liquid can flow from the blood vessel side to the second syringe 5 side. Therefore, it can be confirmed that the blood is returned by retracting the presser 170 to retract the piston 54. At this time, a valve is provided in the first connector 93 so that the contrast agent does not flow into the second syringe 5 from the first syringe 4. This valve is not opened below a predetermined pressure, and is opened when a predetermined pressure is exceeded. Therefore, the liquid can flow only in the direction from the first syringe 4 toward the distal end portion 95. The release valve 96 is also provided with a valve that restricts the liquid to flow only in the direction from the second syringe 5 toward the distal end portion 95 when the chemical liquid is injected. After confirming that the blood has returned, a small amount of physiological saline is injected. Instead of providing these valves, a three-way stopcock can be provided at the branch portion between the first tube 91 and the second tube 92. Thereby, the flow direction of a liquid can be switched manually or automatically.

As shown in FIG. 3, the injector head 1 includes an operation unit 19 capable of operating the injection and stirring of the chemical solution, and a first drive unit 16 and a second drive unit for controlling the injection operation of the injector head 1. 17 and a control unit 18 for controlling the stirring unit 13. The first drive unit 16 includes an injection motor 161 that drives the presser 160, and a conversion mechanism 162 that converts the rotational motion from the injection motor 161 into linear motion. Further, the second drive unit 17 includes an injection motor 171 that drives the presser 170 and a conversion mechanism 172 that converts the rotational motion from the injection motor 171 into a linear motion. The stirring unit 13 includes a stirring motor 130 that drives the first holding unit 11 and a transmission mechanism 131 that transmits the rotational motion from the stirring motor to the first holding unit 11.

The first holding unit 11 is supported so as to be swingable in a direction intersecting the axial direction of the first syringe 4, preferably in a direction perpendicular to the first syringe 4, in a state sandwiched between the pair of

support arms

14 and 15. That is, the shaft 141 is fixed to the distal end side of the first holding unit 11, and the first holding unit 11 is swingably supported by the support arm 14 via the shaft 141. A shaft 151 is fixed to the rear end side of the first holding unit 11, and the first holding unit 11 is swingably supported by the support arm 15 via the shaft 151. The first holding unit 11 can swing in the axial direction with the central axis of the cylinder 42 of the first syringe 4 as the axis. Further, the shaft 151 passes through the shaft hole of the support arm 15, and the first holding unit 11 is connected to the transmission mechanism 131 of the stirring unit 13 through the shaft 151. The shaft 141 is coaxial with the shaft 151, and the end of the shaft 141 passes through the shaft hole of the support arm 14. Thereby, the 1st holding | maintenance unit 11 is supported so that rocking | fluctuation centering on the

shafts

141 and 151 is possible. On the other hand, the stirring unit 13 is fixed to the support arm 14, and the second holding unit 12 is fixed and held while being sandwiched between the pair of

support arms

14 and 15.

When injecting a chemical solution, the operator operates the injector head 1 with the operation unit 19. In this case, the operator inputs physical data of the patient such as weight, data on the type of the chemical solution, and the like from the operation unit 19. The control unit 18 calculates an injection protocol such as an injection rate, an injection amount, and an injection time based on the input data. And the control part 18 of the injector head 1 operates the injector head 1 according to an injection | pouring protocol. For example, when the operator inputs the start of injection, the control unit 18 drives the

injection motors

161 and 171. The rotational motions of the

injection motors

161 and 171 are converted into linear motions by the

conversion mechanisms

162 and 172 and transmitted to the

pressers

160 and 170. Then, the

pressers

160 and 170 push the

pistons

44 and 54 toward the tip of the syringe. As a result, the

pistons

44 and 54 move forward, and the contrast medium in the first syringe 4 and the physiological saline in the second syringe 5 are pushed out. In FIG. 3, the injector head 1 includes an operation unit 19 and a control unit 18. However, the operation unit 19 and the control unit 18 can be provided outside the injector head 1. In this case, the injector head 1, the operation unit 19, and the control unit 18 are connected by wire or wireless, and the injector head 1 can be remotely operated.

The operator stirs the contrast agent before injecting the drug solution. First, the operator attaches the first syringe 4 to the first holding unit 11. Subsequently, the operator operates the operation unit 19 and inputs the start of the stirring operation. The operation unit 19 transmits a control signal for starting the stirring operation to the control unit 18. The control unit 18 that has received the control signal drives the stirring motor 130 to cause the stirring unit 13 to perform a predetermined stirring operation. The rotational motion from the stirring motor 130 is transmitted to the shaft 151 via the transmission mechanism 131. Since the shaft 151 is fixed to the first holding unit 11, the first holding unit 11 swings according to the rotation of the shaft 151.

In the stirring operation, for example, the stirring time is 10 seconds to 300 seconds, the rotation speed is 10 rpm to 120 rpm, and the swing angle of the first holding unit 11 is 45 degrees to 360 degrees. Further, the stirring operation can be performed so as to repeat swinging in one direction and swinging in the opposite direction. In this case, for example, the first holding unit 11 is swung 180 degrees in one direction. That is, the first holding unit 11 is swung until the side where the first syringe 4 of the first holding unit 11 is attached faces downward. Thereafter, the first holding unit 11 is swung 180 degrees in the reverse direction. That is, the first holding unit 11 is swung so as to return to the original position. Alternatively, the first holding unit 11 is swung 45 degrees in one direction. Thereafter, the first holding unit 11 is swung 90 degrees in the reverse direction. That is, the first holding unit 11 is swung 45 degrees in the reverse direction through the original position.

It should be noted that the stirring operation can be automatically started when the separation of the contrast agent is detected. The separation of the contrast agent can be detected by a CCD camera or a sensor. For example, in the case of a CCD camera, an image of the contrast agent in the cylinder 42 can be taken by the CCD camera, and the separation of the contrast agent can be recognized from the taken image. Furthermore, it can be set so that the stirring operation is automatically performed every predetermined time.

Further, the control unit 18 performs control so as not to start injection during the stirring operation. That is, the control unit 18 starts injecting the chemical liquid after the first holding unit 11 stops swinging. Therefore, when the control unit 18 receives an injection start signal during the stirring operation, the control unit 18 drives the

injection motors

161 and 171 after waiting for the stirring operation to end. Thereby, the tube 9 does not move due to the swinging of the first holding unit 11, and it is possible to prevent the catheter or the like from being detached from the patient during the injection. In addition, the control part 18 can also make the stirring unit 13 perform stirring operation, when starting injection | pouring. In this case, the control unit 18 that has received the injection start control signal causes the stirring unit 13 to perform the stirring operation, and drives the

injection motors

161 and 171 after the stirring operation is completed. In the first embodiment, the control unit 18 performs control so that the injection is not started during the stirring operation. However, the stirring operation can be performed during the injection.

Next, the first drive unit 16 and the second drive unit 17 will be described with reference to FIG. The first drive unit 16 is arranged in the cover of the first holding unit 11, and the second drive unit 17 is arranged in the cover of the second holding unit 12. The first drive unit 16 and the second drive unit 17 have

injection motors

161 and 171 and

conversion mechanisms

162 and 172, respectively. The

injection motors

161 and 171 are, for example, stepping motors. The

conversion mechanisms

162 and 172 include ball screws 163 and 173 and

ball nut units

160 and 170 that function as a presser. The first holding unit 11 includes a frame including a front end member 114 located on the front end side, a rear end member 115 located on the rear end side, and a beam member 116 that connects the front end member 114 and the rear end member 115. Have.

The ball screws 163 and 173 are connected to the output shafts of the

injection motors

161 and 171 via two pulleys and a belt (not shown). One pulley is fixed to the output shafts of the

injection motors

161 and 171, and the other pulley is fixed to the ends of the ball screws 163 and 173. Belts are wound around the two pulleys, and the rotational movements of the

injection motors

161 and 171 are transmitted to the ball screws 163 and 173. Instead of the two pulleys and the belt, the rotational motion may be transmitted to the ball screws 163 and 173 by a gear.

The ball screw 163 of the first driving unit 16 is supported by the front end member 114 and the rear end member 115 of the frame so as to be rotatable and immovable in the axial direction. A guide shaft 165 passing through the ball nut unit 160 is fixed to the front end member 114 and the rear end member 115. The ball screw 173 of the second drive unit 17 is supported by the

support arms

14 and 15 so as to be rotatable and immovable in the axial direction. A guide shaft 175 that passes through the ball nut unit 170 is fixed to the

support arms

14 and 15. The

ball nut units

160 and 170 are screwed into the ball screws 163 and 173.

The

ball nut units

160 and 170 linearly move along the

guide shafts

165 and 175 as the ball screws 163 and 173 rotate. Specifically, when the

injection motors

161 and 171 are driven, the rotational motion is transmitted to the ball screws 163 and 173 via the pulleys and the belt, and the ball screws 163 and 173 rotate. When the ball screws 163 and 173 rotate, the

ball nut units

160 and 170 move forward or backward along the ball screws 163 and 173 according to the rotation direction. Further, the rear ends of the

pistons

44 and 54 are engaged with and held by the

ball nut units

160 and 170 via the engaging

portions

164 and 174. Therefore, when the

pistons

44 and 54 are pushed by the sliding of the

ball nut units

160 and 170, the

pistons

44 and 54 move forward. Further, when the

pistons

44 and 54 are pulled by the sliding of the

ball nut units

160 and 170, the

pistons

44 and 54 move backward.

Next, the stirring unit 13 will be described with reference to FIGS. For convenience of explanation, the transmission mechanism 131 of the stirring unit 13 is extracted and shown in the square frame of FIG. The stirring unit 13 includes a stirring motor 130 and a transmission mechanism 131 that transmits the rotational force from the stirring motor 130 to the shaft 151. The stirring motor 130 is, for example, a stepping motor. The first holding unit 11 is connected to the transmission mechanism 131 via the shaft 151. The transmission mechanism 131 includes a first gear 132, a second gear 133, a third gear 134, a fourth gear 135, and a belt 136. The first gear 132 is connected to and fixed to the output shaft of the stirring motor 130, and the second gear 133 has external teeth that mesh with the external teeth of the first gear 132. The third gear 134 is coaxial with the second gear 133 and is bolted and fixed to the second gear 133. The third gear 134 and the fourth gear 135 have external teeth that mesh with the internal teeth of the belt 136. The fourth gear 135 is fixed to the shaft 151, and the shaft 151 is fixed to the rear end member 115 of the first holding unit 11.

Rotational motion from the stirring motor 130 is transmitted to the first gear 132 via the output shaft. When the first gear 132 rotates according to the rotation of the output shaft, the second gear 133 rotates according to the rotation of the first gear 132. The third gear 134 fixed to the second gear 133 rotates around the shaft 152 as the second gear 133 rotates. The belt 136 having the internal teeth that mesh with the external teeth of the third gear 134 rotates according to the rotation of the third gear 134. The fourth gear 135 having external teeth that mesh with the internal teeth of the belt 136 rotates according to the rotation of the belt 136. Since the shaft 151 is fixed to the fourth gear 135, the shaft 151 rotates according to the rotation of the fourth gear 135. The shaft 151 is fixed to the rear end member 115 of the first holding unit 11. Therefore, according to the rotation of the shaft 151, the first holding unit 11 swings around the shaft 151 with respect to the

support arms

14 and 15.

Here, the stirring motor 130 is controlled by the control unit 18 so as to swing the first holding unit 11 at a predetermined swing angle. That is, the stirring motor 130 is controlled so that the first holding unit 11 reciprocates within a predetermined angle range from a horizontal direction with respect to the central axis of the shaft 151. Therefore, the first syringe 4 held and fixed by the first holding unit 11 also swings together with the first holding unit 11. Thereby, the contrast agent in the 1st syringe 4 is stirred.

The injector head 1 is used in a two-cylinder injector including a first holding unit 11 and a second holding unit 12. Therefore, the contrast agent can be agitated by swinging the first syringe 4 held by the first holding unit 11 as the other holding unit with the second holding unit 12 as one holding unit as a base. it can. In the case of such a two-cylinder injector, there is an advantage that the agitated contrast agent can be injected while being swept together with physiological saline. For example, in a dynamic examination of the liver, it is preferable to inject contrast agents together, and the contrast agent needs to be poured into the heart at once by physiological saline. In such a case, the injector head 1 can be suitably used. That is, the contrast agent does not stay between the injection site and the heart, and there is no possibility of adversely affecting the quality of the captured image. As an injection method, it is possible to inject contrast medium and physiological saline again after injecting physiological saline followed by injection of contrast medium. As a result, the inspection can be performed twice.

In the first embodiment, the chemical solution in the syringe is agitated by swinging the holding unit that fixes and holds the syringe by the agitation unit. That is, the syringe swings together with the holding unit while being fixed to the holding unit. Thereby, even if stirring operation is performed, it can prevent that a syringe will shift. Moreover, the attachment and removal of the syringe are easy, and different types of syringes can be attached inexpensively and easily without replacing the stirring unit. Further, no holding member is disposed in the vicinity of the distal end portion of the syringe. Therefore, the tip portion of the syringe is kept clean.

[Second Embodiment]
Next, an injector according to the second embodiment will be described with reference to FIG. In the injector of the first embodiment, the first holding unit 11 is swung in a direction intersecting with the axial direction of the first syringe 4. However, in the injector of the second embodiment, the first holding unit 11 swings in a direction along the axial direction of the first syringe 4. In the description of the second embodiment, differences from the first embodiment will be described, the same reference numerals will be given to the components described in the first embodiment, and description thereof will be omitted. Except where specifically described, the constituent elements having the same reference numerals perform substantially the same operations and functions, and the effects thereof are also substantially the same.

Unlike the first embodiment, beams 216 and 217 are provided between the

support arms

14 and 15. The first holding unit 11 is supported so as to be swingable with respect to the

beams

216 and 217 via

shafts

241 and 251. The shaft 241 on the stirring unit 13 side passes through the shaft hole of the beam 217 and is connected and fixed to the transmission mechanism 131. Further, the shaft 251 on the second holding unit 12 side passes through the shaft hole formed in the beam 216. The second holding unit 12 and the stirring unit 13 are arranged between the

support arms

14 and 15 and are fixed to the

support arms

14 and 15.

As in the first embodiment, the stirring unit 13 includes a stirring motor 130 and a transmission mechanism 131. The rotational motion from the stirring motor 130 is transmitted to the first gear 132 of the transmission mechanism 131 via the output shaft. When the first gear 132 rotates according to the rotation of the output shaft, the fourth gear 135 rotates via the second gear 133, the third gear 134, and the belt 136. Since the shaft 241 is fixed to the fourth gear 135, the shaft 241 rotates according to the rotation of the fourth gear 135. Since the shaft 241 is fixed to the beam member 116 of the first holding unit 11 described above, the first holding unit 11 swings as the shaft 241 rotates. Thereby, the contrast agent in the 1st syringe 4 fixed and hold | maintained at the 1st holding | maintenance unit 11 is stirred.

Also in the second embodiment, the chemical solution in the syringe is stirred by swinging the holding unit that fixes and holds the syringe by the stirring unit. That is, the syringe swings together with the holding unit while being fixed to the holding unit. Thereby, even if stirring operation is performed, it can prevent that a syringe will shift. Moreover, the attachment and removal of the syringe are easy, and different types of syringes can be attached inexpensively and easily without replacing the stirring unit. Further, no holding member is disposed in the vicinity of the distal end portion of the syringe. Therefore, the tip portion of the syringe is kept clean.

[Third Embodiment]
Next, an injector according to the third embodiment will be described with reference to FIG. In the injectors of the first and second embodiments, the first holding unit 11 is swung. However, in the injector of the third embodiment, the first holding unit 11 slides in a direction along the axial direction of the first syringe 4. In the description of the third embodiment, differences from the first and second embodiments will be described, and the same reference numerals will be given to the components described in the first and second embodiments, and the description thereof will be made. Omitted. Except where specifically described, the constituent elements having the same reference numerals perform substantially the same operations and functions, and the effects thereof are also substantially the same.

Unlike the first and second embodiments, the stirring unit 13 includes a stirring motor 130 and a link mechanism 331 connected to the stirring motor 130. The first holding unit 11 is connected to the link mechanism 331. The link mechanism 331 includes a disk 332 fixed to the output shaft of the stirring motor 130 and a rod 333 connected to the disk 332 via a pin at a position shifted from the rotation axis of the disk 332. The frame of the first holding unit 11 includes a front end member 314 and a rear end member 315, and a beam member 316 positioned between the front end member 314 and the rear end member 315. The beam member 316 is fixed to the front end member 314 and the rear end member 315 by bolts. The end of the rod 333 is connected to a slider 334 protruding from the beam member 316 via a pin. The tip member 314 is connected to the cover 318 via two slide shafts 317. The front end member 314, the rear end member 315, and the beam member 316 can slide linearly in the axial direction of the first syringe 4 within the cover 318. That is, the tip member 314 is connected to the slider shaft 317 so as to be able to advance and retract.

When the stirring operation is performed, the control unit 18 drives the stirring motor 130. When the stirring motor 130 is driven, the disk 332 connected to the output shaft rotates. The rod 333 connected to the disk 332 is interlocked with the rotation of the disk 332. The slider 334 reciprocates linearly in the axial direction of the first syringe 4 according to the movement of the rod 333. As the slider 334 slides, the first holding unit 11 performs a linear reciprocating motion in the axial direction of the first syringe 4. The first syringe 4 is fixed and held in the first holding unit 11. Therefore, the first syringe 4 performs a linear reciprocating motion as indicated by an arrow A in FIG. 7 as the first holding unit 11 slides. Thereby, the contrast agent in the 1st syringe 4 can be stirred.

In the third embodiment, the drug solution in the syringe is stirred by sliding the holding unit that holds and holds the syringe with the stirring unit. That is, the syringe slides together with the holding unit while being fixed to the holding unit. Thereby, even if stirring operation is performed, it can prevent that a syringe will shift. Moreover, the attachment and removal of the syringe are easy, and different types of syringes can be attached inexpensively and easily without replacing the stirring unit. Further, no holding member is disposed in the vicinity of the distal end portion of the syringe. Therefore, the tip portion of the syringe is kept clean.

[Fourth Embodiment]
Next, an injector according to the fourth embodiment will be described with reference to FIG. In the injectors of the first to third embodiments, the first holding unit 11 is swung or slid. However, in the injector of the fourth embodiment, instead of moving the first holding unit 11, the syringe fixed and held by the holding unit is moved. In the description of the fourth embodiment, differences from the first to third embodiments will be described, and the same reference numerals will be given to the components described in the first to third embodiments, and the description thereof will be made. Omitted. Except where specifically described, the constituent elements having the same reference numerals perform substantially the same operations and functions, and the effects thereof are also substantially the same.

The injector 1 for injecting the chemical solution of the fourth embodiment also has a first drive unit 16 that pushes out the contrast medium as the chemical solution from the first syringe 4 filled with the chemical solution, and a first holding that fixes and holds the first syringe 4. A unit 11 and a support arm 14 that supports the first holding unit 11 are provided. And unlike 1st thru | or 3rd embodiment, the injector 1 is provided with the stirring unit 13 which moves the 1st syringe 4 in order to stir the chemical | medical solution in the 1st syringe 4. FIG. That is, the vibration box 430 as the stirring unit 13 is in contact with the outer surface of the first syringe 4 at a position separated from the first holding unit 11. The vibration box 430 is in contact with the upper surface of the first syringe 4 and applies vibration to the first syringe 4.

The stirring unit 13 has a vibration motor as a stirring motor in the vibration box 430. The vibration motor is driven by the control unit 18, and vibration is transmitted to the first syringe 4. Thereby, the contrast agent in the 1st syringe 4 is stirred. The vibration box 430 is supported by a swing arm 431 that can swing around an axis. The swing arm 431 is connected to the tip member 314 of the first holding unit 11 or the support arm 14 (not shown) via a shaft. Therefore, the swing arm 431 and the vibration box 430 can swing between the contact position and the retracted position. The swing arm 431 is fixed by a lock means (not shown) at the contact position shown in FIG. Moreover, the vibration box 430 contacts the upper surface of the first syringe 4 at the contact position.

On the other hand, the vibration box 430 is separated from the first syringe 4 in the retracted touch position. When attaching the first syringe 4 to the first holding unit 11 or removing the first holding unit 11, the first arm 4 is swung after the rocking arm 431 is unlocked and moved in the direction indicated by the arrow B in FIG. 8. Retreat to the retreat position. Note that the vibration box 430 can be brought into contact with the lower surface or the side surface of the first syringe 4. In this case, for example, the swing arm 431 is configured to be swingable between a contact position below the first syringe 4 and a retracted position.

In the fourth embodiment, the chemical solution in the syringe is stirred by the stirring unit applying vibration to the syringe fixed and held by the holding unit. That is, the syringe vibrates while being fixed to and held by the holding unit. Thereby, even if stirring operation is performed, it can prevent that a syringe will shift. Moreover, the attachment and removal of the syringe are easy, and different types of syringes can be attached inexpensively and easily without replacing the stirring unit. Further, no holding member is disposed in the vicinity of the distal end portion of the syringe. Therefore, the tip portion of the syringe is kept clean.

[Fifth Embodiment]
Next, an injector according to a fifth embodiment will be described with reference to FIG. In the injector of the first embodiment, the support arm 14 is provided on the front end side of the first holding unit 11, and the support arm 15 is provided on the rear end side of the first holding unit 11. However, in the injector according to the fifth embodiment, the support member that supports the first holding unit 11 is disposed so as to avoid the distal end side of the first holding unit 11. In the description of the fifth embodiment, differences from the first embodiment will be described, and the same reference numerals will be given to the components described in the first embodiment, and description thereof will be omitted. Except where specifically described, the constituent elements having the same reference numerals perform substantially the same operations and functions, and the effects thereof are also substantially the same.

As in the first embodiment, the injector head 1 is provided with a first holding unit 11, a second holding unit 12, and a stirring unit 13. A support arm 15 (not shown) as a support member is disposed in the stirring unit 13. Unlike the first embodiment, only the rear end side of the first holding unit 11 is supported by the support arm 15 via the shaft 151. That is, the support arm 14 is not provided, and the distal end side of the first holding unit 11 is a free end. Therefore, there is no possibility that the first syringe 4 contacts the support arm 14 during the stirring operation. Thereby, the freedom degree of stirring operation can be raised.

For example, the stirring operation of the fifth embodiment can be performed so as to rotate the first holding unit 11 in one direction for a predetermined time. Moreover, stirring operation can also be performed as follows. First, the first holding unit 11 is swung 180 degrees in one direction. That is, the first holding unit 11 is swung until the side where the first syringe 4 of the first holding unit 11 is attached faces downward. Thereafter, the first holding unit 11 is swung 360 degrees in the reverse direction. That is, the first holding unit 11 is swung in the reverse direction until it passes through the original position and the side on which the first syringe 4 is mounted faces downward. The stirring operation can be performed in the same manner as in the first embodiment.

As in the first embodiment, the stirring unit 13 includes a stirring motor 130 and a transmission mechanism 131. The rotational motion from the stirring motor 130 is transmitted to the first gear 132 of the transmission mechanism 131 via the output shaft. When the first gear 132 rotates according to the rotation of the output shaft, the fourth gear 135 rotates via the second gear 133, the third gear 134, and the belt 136. Since the shaft 151 is fixed to the fourth gear 135, the shaft 151 rotates according to the rotation of the fourth gear 135. Since the shaft 151 is fixed to the rear end member 115 of the first holding unit 11, the first holding unit 11 swings as the shaft 151 rotates. Thereby, the contrast agent in the 1st syringe 4 fixed and hold | maintained at the 1st holding | maintenance unit 11 is stirred.

Further, the first holding unit 11 and the stirring unit 13 are separated by a predetermined distance. Thereby, it is possible to prevent the operator's finger from being accidentally pinched or caught in the swing while the first holding unit 11 is swinging. Further, the first holding unit 11 can be covered with a transparent cover. The cover has an open front end so as not to limit the swing of the first holding unit 11. The inner space of the cover is configured so as not to come into contact with the swinging first holding unit 11. Thereby, since the upper surface side, side surface side, and lower surface side of the 1st holding | maintenance unit 11 can be covered, it can prevent that an operator's finger is pinched or caught.

Note that the operation unit 519 of the fifth embodiment is a touch panel supported by a pole extending above the stirring unit 13. The touch panel 519 displays the injection status. Further, the operator can operate the injector head 1 by operating the touch panel 519.

Also in the fifth embodiment, the chemical solution in the syringe is stirred by swinging the holding unit that fixes and holds the syringe by the stirring unit. That is, the syringe swings together with the holding unit while being fixed to the holding unit. Thereby, even if stirring operation is performed, it can prevent that a syringe will shift. Moreover, the attachment and removal of the syringe are easy, and different types of syringes can be attached inexpensively and easily without replacing the stirring unit. Further, no holding member is disposed in the vicinity of the distal end portion of the syringe. Therefore, the tip portion of the syringe is kept clean. In addition, the arrangement | positioning location of a supporting member should just avoid the front end side of the 1st holding unit 11, and is not limited to the rear end side of the 1st holding unit 11. FIG.

[Sixth Embodiment]
Next, an injector according to a sixth embodiment will be described with reference to FIGS. In the injector of the first embodiment, the stirring unit 13 is provided on the rear end side of the first holding unit 11. However, in the injector of the sixth embodiment, the stirring unit 13 is provided on the distal end side of the first holding unit 11. Note that in the description of the sixth embodiment, differences from the first embodiment will be described, the same reference numerals will be given to the components described in the first embodiment, and description thereof will be omitted. Except where specifically described, the constituent elements having the same reference numerals perform substantially the same operations and functions, and the effects thereof are also substantially the same.

As in the first embodiment, the injector head 1 is provided with a first holding unit 11, a second holding unit 12, and a stirring unit 13. A support arm 14 (not shown) as a support member is disposed in the stirring unit 13. The first holding unit 11 is supported by the support arm 14 and the support arm 15. On the other hand, unlike the first embodiment, the cover that accommodates the stirring unit 13 and the second holding unit 12 is integrally formed. The stirring unit 13 is disposed on the distal end side of the first holding unit 11. That is, the distal end side of the first holding unit 11 is connected to the transmission mechanism 131 of the stirring unit 13 via a shaft 141 (not shown). Moreover, the control part 18 accommodated in the cover is connected to the 1st holding | maintenance unit 11, the 2nd holding | maintenance unit 12, and the stirring unit 13 via the hinge. Further, the operation unit 19 is disposed on the control unit 18.

Also, the length of the first holding unit 11 is longer than that of the first syringe 4 so that the first syringe 4 does not protrude from the first holding unit 11. Therefore, there is no possibility that the first syringe 4 contacts the support arm 14 or the stirring unit 13. Thereby, the freedom degree of stirring operation can be raised. Therefore, the stirring operation of the sixth embodiment can be performed so as to rotate the first holding unit 11 in one direction for a predetermined time. Moreover, stirring operation can also be performed as follows. First, the first holding unit 11 is swung 180 degrees in one direction. That is, the first holding unit 11 is swung to a position where the side on which the first syringe 4 of the first holding unit 11 is attached faces downward. Thereafter, the first holding unit 11 is swung 360 degrees in the reverse direction. That is, the first holding unit 11 is swung in the reverse direction until it passes through the original position and the side on which the first syringe 4 is mounted faces downward. The stirring operation can be performed in the same manner as in the first embodiment.

The stirring unit 13 of the sixth embodiment also includes a stirring motor 130 and a transmission mechanism 131. The rotational motion from the stirring motor 130 is transmitted to the first gear 132 of the transmission mechanism 131 via the output shaft. When the first gear 132 rotates according to the rotation of the output shaft, the fourth gear 135 rotates via the second gear 133, the third gear 134, and the belt 136. Here, since the shaft 141 is fixed to the fourth gear 135, the shaft 141 rotates according to the rotation of the fourth gear 135. Since the shaft 141 is fixed to the tip member 114 of the first holding unit 11, the first holding unit 11 swings as the shaft 141 rotates. The output shaft of the stirring motor 130 can be directly connected to the shaft 141.

11 and 12, the operator tilts the first syringe 4 and the second syringe 5 at a predetermined angle before performing the stirring operation. That is, the first holding unit 11 and the second holding unit 12 are manually tilted to the injection position. And the 1st holding | maintenance unit 11 and the 2nd holding | maintenance unit 12 are fixed by the locking means not shown in the state which inclined. In this way, the stirring operation is performed with the first syringe 4 tilted. Specifically, as shown in FIG. 11, the first holding unit 11 is swung by a predetermined angle in one direction. Thereafter, as shown in FIG. 12, the first holding unit 11 is swung in the reverse direction by a predetermined angle through the original position. Thereby, the contrast agent in the 1st syringe 4 fixed and hold | maintained at the 1st holding | maintenance unit 11 is stirred. In addition, in order to incline the 1st holding | maintenance unit 11 and the 2nd holding | maintenance unit 12, a lifter can also be provided. In this case, the operator operates the operation unit 19 and lifts the first holding unit 11 and the second holding unit 12 with a lifter. Thereby, the 1st holding | maintenance unit 11 and the 2nd holding | maintenance unit 12 can be inclined automatically.

Also in the sixth embodiment, the chemical solution in the syringe is stirred by swinging the holding unit that fixes and holds the syringe by the stirring unit. That is, the syringe swings together with the holding unit while being fixed to the holding unit. Thereby, even if stirring operation is performed, it can prevent that a syringe will shift. Moreover, the attachment and removal of the syringe are easy, and different types of syringes can be attached inexpensively and easily without replacing the stirring unit. Further, no holding member is disposed in the vicinity of the distal end portion of the syringe. Therefore, the tip portion of the syringe is kept clean.

[Seventh Embodiment]
Next, a chemical solution injection system according to a seventh embodiment will be described with reference to FIG. In the chemical solution injection system of the seventh embodiment, history data in which the history of the stirring operation is recorded can be stored in the external storage unit 700. Note that in the description of the seventh embodiment, differences from the first embodiment will be described, and the same reference numerals will be given to the components described in the first embodiment, and description thereof will be omitted. Except where specifically described, the constituent elements having the same reference numerals perform substantially the same operations and functions, and the effects thereof are also substantially the same.

The chemical solution injection system includes an injector 100 as an injection device for injecting a chemical solution, and an external storage unit 700 such as a database server or an in-hospital information system that communicates with the injector 100 and stores patient information (medical chart information) and the like. . Furthermore, the chemical liquid injection system can also include a medical imaging apparatus 800 such as an ultrasonic diagnostic apparatus. The injector head 1 of the injector 100 is provided with a control unit 18, an operation unit 19, a communication unit 71, and an RFID reader 72. The first syringe 4 is provided with an RFID chip 73. The RFID chip 73 stores at least chemical liquid data related to the chemical liquid to be injected. The data includes, for example, data such as the name or ID of the chemical solution, viscosity, expiration date, syringe capacity, lot number, and the like. The RFID chip 73 can also store data later by the injector head 1 or the like. The RFID reader 72 is provided at a position where it can wirelessly communicate with the RFID chip 73 only when the first syringe 4 is correctly attached to the first holding unit 11.

When the operator inputs injection condition data such as the patient's weight from the operation unit 19, the control unit 18 receives the injection condition data. In addition, the control unit 18 acquires chemical liquid data from the RFID chip 73 by the RFID reader 72. And the control part 18 calculates an injection | pouring protocol from injection | pouring condition data and chemical | medical solution data. The control unit 18 can also acquire injection condition data or an injection protocol from the external storage unit 700 via the communication unit 71. The control unit 18 controls the first driving unit 16 and the second driving unit 17 according to the injection protocol to perform the injection operation. Furthermore, the control part 18 controls the stirring unit 13 as mentioned above, and performs stirring operation.

Further, the control unit 18 generates history data that records the history of the injection operation and the stirring operation. And the control part 18 can transmit historical data to the external memory | storage means 700, and can record it on the medical chart information corresponding to a patient. The history data of the stirring operation may include data such as the name of the chemical solution, the stirring time, and the rocking speed. Further, the history data of the injection operation may include data such as the name of the chemical solution, the injection time, and the injection speed. Note that the control unit 18 can also acquire data relating to an image, for example, data such as an ID, an imaging time, or an imaging region, from the ultrasonic diagnostic apparatus via the communication unit. And the control part 18 can memorize | store the historical data in the external memory | storage means 700 in the state linked | related with the image. The operator can send and receive information such as an injection protocol to the injector 100 using a terminal of the in-hospital information system.

In the seventh embodiment, the injector 100 includes a communication unit 71 that communicates with an external device. Thereby, the injector 100 can transmit / receive information to / from the medical imaging apparatus 800 such as an ultrasonic diagnostic apparatus or the external storage unit 700 such as a database server. In addition, by using a syringe having the RFID chip 73, it is possible to transmit the medicinal solution data or the like to the ultrasonic diagnostic apparatus 800 or the external storage unit 700 for storage. The injector 100 can transmit history data in which the history of the injection operation and the agitation operation is recorded to the external storage unit 700, or can receive a chemical injection protocol or the like from the external storage unit 700. Furthermore, information such as the weight of the patient can be received from the external storage means 700 and the injection protocol can be calculated by the control unit 18 of the injector 100. Thus, appropriate imaging can be performed by linking the injector 100 and the external storage unit 700 that stores patient information. Further, by linking the medical imaging apparatus 800, it is possible to perform imaging at an appropriate timing after the injection of the contrast medium.

The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Inventions modified within the scope not departing from the present invention and inventions equivalent to the present invention are also included in the present invention. Moreover, each above-mentioned embodiment and modification can be combined suitably in the range which is not contrary to this invention.

For example, the transmission mechanism 131 of the stirring unit 13 may be omitted, and the output shaft of the stirring motor 130 may be connected to the shaft 151. Further, the drive unit may have an ultrasonic motor instead of the stepping motor. Further, although the second holding unit 12 is fixed, it can be swung in the same manner as the first holding unit 11. Also in the first embodiment, the first holding unit 11 and the stirring unit 13 or the support arm 15 can be separated. Moreover, the 1st holding | maintenance unit 11 and the support arm 14 can also be spaced apart. Thereby, it is possible to prevent the operator's finger from being accidentally pinched or involved in swinging. Furthermore, also in embodiments other than the fifth embodiment, the first holding unit 11 can be covered with a transparent cover.

In the first embodiment, the second holding unit 12 may further be provided with a heater (not shown) that contacts the outer surface of the second syringe 5. The heater is provided in a cylinder receiving portion 120 provided in the second holding unit 12 and heats or keeps the cylinder 52 of the second syringe 5. This heater is arranged on the upper surface of the cylinder receiving part 120 or is built in the cylinder receiving part 120. By maintaining the physiological saline with a heater, a predetermined temperature, for example, a temperature about the human body temperature can be maintained.

This application claims priority from Japanese Patent Application No. 2012-091256 filed on April 12, 2012, the contents of which are incorporated herein by reference.

1: injector head, 2: stand, 4: first syringe, 5: second syringe, 6: syringe adapter, 9: tube, 11: first holding unit, 12: second holding unit, 13: stirring unit, 14 : Support arm, 15: support arm, 16: first drive unit, 17: second drive unit, 18: control unit, 19: operation unit, 41: cylinder flange, 42: cylinder, 43: conduit unit, 44: piston 51: cylinder flange, 52: cylinder, 53: conduit section, 54: piston, 71: communication section, 72: RFID reader, 73: RFID chip, 91: first tube, 92: second tube, 93: first Connector: 94: Second connector, 95: Tip portion, 96: Release valve, 100: Injector, 110: Cylinder receiving portion, 114: Tip member 115: Rear end member, 116: Beam member, 120: Cylinder receiving portion, 130: Motor for stirring, 131: Transmission mechanism, 132: First gear, 133: Second gear, 134: Third gear, 135: Fourth Gear: 136: Belt, 141: Shaft, 151: Shaft, 152: Shaft, 160: Presser, 161: Motor for injection, 162: Conversion mechanism, 163: Ball screw, 164: Engagement part, 165: Guide shaft, 170 : Presser, 171: Motor for injection, 172: Conversion mechanism, 173: Ball screw, 174: Engagement part, 175: Guide shaft, 216: Beam, 217: Beam, 241: Shaft, 251: Shaft, 314: Tip member 315: Rear end member, 316: Beam member, 317: Slide shaft, 318: Cover, 331: Link mechanism 332: Disc 333: Rod 334: Slider 430: Vibration box 431: Swing arm 519: Operation unit 700: External storage means 800: Medical imaging apparatus

Claims

An injection device for injecting a chemical solution,
A first drive unit for pushing out the first chemical solution from the first syringe filled with the first chemical solution;
A first holding unit for fixing and holding the first syringe;
A support member for supporting the first holding unit;
An injection device comprising: an agitation unit that is connected to the first holding unit and moves the first holding unit in order to agitate the first chemical solution in the first syringe.
The stirring unit includes a stirring motor and a transmission mechanism that transmits a rotational force from the stirring motor to a shaft,
The first holding unit is connected to the transmission mechanism via the shaft,
The injection device according to claim 1, wherein the first holding unit swings around the shaft with respect to the support member.
The injection device according to claim 2, wherein the first holding unit swings in a direction intersecting an axial direction of the first syringe.
The injection device according to claim 2, wherein the first holding unit swings in a direction along an axial direction of the first syringe.
The stirring unit has a stirring motor and a link mechanism connected to the stirring motor,
The first holding unit is connected to the link mechanism;
The injection device according to claim 1, wherein the first holding unit slides in a direction along an axial direction of the first syringe.
A second drive unit for extruding the second chemical liquid from the second syringe filled with the second chemical liquid;
A second holding unit for fixing and holding the second syringe;
The injection device according to any one of claims 1 to 5, wherein the second holding unit is fixed and held on the support member.
A control unit for controlling the drive unit;
The injection device according to any one of claims 1 to 6, wherein the controller starts injecting the chemical solution after the first holding unit is stopped.
The injection device according to any one of claims 1 to 7, wherein the first holding unit includes a heater that contacts an outer surface of the first syringe.
The injection device according to any one of claims 1 to 8, wherein the support member is disposed so as to avoid a tip side of the first holding unit.
The injection device according to any one of claims 1 to 3, wherein the agitation unit is disposed on a distal end side of the first holding unit.
An injection device for injecting a chemical solution,
A drive unit for extruding the chemical solution from a syringe filled with the chemical solution;
A holding unit for fixing and holding the syringe;
A support member for supporting the holding unit;
An infusion apparatus comprising: an agitation unit that contacts the outer surface of the syringe at a position spaced from the holding unit and moves the syringe to agitate the drug solution in the syringe.
The injection device according to claim 11, wherein the agitation unit has a vibration motor, and contacts the upper surface of the syringe to apply vibration to the syringe.
The injection device according to any one of claims 1 to 12, further comprising a three-way stopcock so as to automatically switch a flowing direction of the chemical solution.
The injection device according to any one of claims 1 to 13, further comprising a sensor that detects separation of the chemical solution.
A chemical solution injection system comprising: the injection device according to any one of claims 1 to 14; and an external storage means that communicates with the injection device.
The infusion system includes an infusion system including a communication unit for communicating with the external storage unit.