JP2005034178A - Liquid chemical injection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid chemical injection system capable of injecting a plurality of liquid chemicals in an order to a patient by a simple structure. <P>SOLUTION: A liquid chemical syringe 200 filled with the liquid chemical and an extension tube to be connected to the patient are connected through a liquid chemical holding member 500, and a prescribed volume of the liquid chemical different from the liquid chemical syringe 200 is filled in a thin and long flow path in the liquid chemical holding member 500. When the piston member 210 of the liquid chemical syringe 200 is forcibly fitted to a piston member 220, the liquid chemical of the liquid chemical holding member 500 is pushed out by the liquid chemical of the liquid chemical syringe 200. When the liquid chemical is completely pushed out, the liquid chemical of the liquid chemical syringe 200 is pushed out through the liquid chemical holding member 500. Thus, the liquid chemicals of the liquid chemical holding member 500 and the liquid chemical syringe 200 are injected to the patient in the order. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chemical solution injection system that injects a chemical solution of a chemical solution syringe into a subject using a chemical solution injection device, and particularly to a chemical solution injection system that injects two types of chemical solutions into a subject in order.
[0002]
[Prior art]
At present, as a fluoroscopic imaging apparatus that captures a fluoroscopic image of a subject, a CT (Computed Tomography) scanner, an MRI (Magnetic Resonance Imaging) apparatus, a PET (Positron Emission Tomography) apparatus, an ultrasonic diagnostic apparatus, an angiographic apparatus, an MRA MRA MRA MRA (MRA MRA) ) Equipment, etc.
[0003]
When using the apparatus as described above, a chemical liquid such as a contrast medium or physiological saline may be injected into the subject, and a chemical liquid injection apparatus that automatically executes this injection has also been put into practical use. The above-described chemical liquid injector has an injection head, and a chemical syringe is detachably attached to the injection head.
[0004]
The chemical liquid syringe has a cylinder member filled with the chemical liquid, and a piston member is slidably inserted into the cylinder member. More specifically, the cylinder member is formed in a hollow cylindrical shape with the front end portion closed and the rear end portion opened, and a through-hole that connects the front surface and the internal space is formed. This through-hole is normally formed as a conduit portion protruding forward, and an injection needle and an extension tube are attached to this conduit portion.
[0005]
The piston member is generally formed in a columnar shape as a whole, and a flexible piston head is attached to the front end of the elongated piston rod. In general chemical syringes, an annular cylinder flange is formed as a flange portion on the outer periphery of the rear end of the cylinder member, and an annular piston flange is formed as a flange portion on the outer periphery of the rear end of the piston member. ing.
[0006]
When using a chemical injection device, the cylinder member of the chemical syringe filled with the chemical solution is connected to the subject with an extension tube, and the chemical syringe is attached to the syringe holding member of the chemical injection device. In a general chemical solution injector, a concave portion having a shape corresponding to the cylinder member and cylinder flange of the chemical syringe is formed on the upper surface of the syringe holding member. Retained.
[0007]
Further, the chemical liquid injector holds the piston flange separately from the cylinder member by the syringe drive mechanism, and slides the piston member by the syringe drive mechanism. Thus, the chemical solution can be injected into the subject from the chemical solution syringe, and if necessary, the chemical solution can be inhaled from the chemical solution tank or the like to the chemical solution syringe.
[0008]
As described above, when injecting a contrast medium into a subject whose fluoroscopic image is captured by a fluoroscopic imaging device, it is common to inject the contrast medium to a predetermined volume first and then inject physiological saline to a predetermined volume. It is. The chemical injection device that realizes this has a structure in which a chemical syringe filled with contrast medium and a chemical syringe filled with physiological saline are held in parallel, and the contrast medium chemical syringe is driven first. Then, the physiological saline solution syringe is driven.
[0009]
In such a chemical solution injection device, since only a suitable amount of contrast medium can be injected into the imaging region, consumption of expensive contrast medium can be reduced, and the burden on the body of the subject can also be reduced. In addition, the above-mentioned chemical | medical solution injection | pouring apparatus as mentioned above was invented and applied in the past by this applicant etc. (for example, refer patent document 1, 2).
[0010]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-11096 [Patent Document 2]
JP-A-2002-102343
[Problems to be solved by the invention]
However, in the above-described chemical solution injection device, it is necessary to prepare and attach a contrast solution solution syringe and a saline solution solution syringe individually, which is cumbersome, and the contrast solution solution syringe and the saline solution are complicated. Since it is necessary to hold the water chemical syringe individually, it is difficult to reduce the size of the chemical injection device.
[0012]
Furthermore, the chemical solution syringe of the contrast medium and physiological saline may be the same shape and size, and in such a case, it is possible to attach one type of two chemical solution syringes to the chemical solution injection device, A medical mistake or the like in which only one of the contrast medium and physiological saline is injected into the subject in a large amount cannot be prevented.
[0013]
This invention is made | formed in view of the above subjects, and it aims at providing the chemical | medical solution injection | pouring system which can inject | pour a several chemical | medical solution into a test subject easily and reliably in order.
[0014]
[Means for Solving the Problems]
The chemical solution injection system of the present invention has a chemical solution syringe, an extension tube, and a chemical solution holding member, and the chemical solution syringe has a piston member slidably inserted into a cylinder member filled with the chemical solution, and the extension tube Connects the cylinder member of the liquid syringe and the subject. The medicinal solution holding member is formed with an elongated channel filled with a predetermined volume of medicinal solution different from the medicinal solution syringe, and the cylinder member and the extension tube are connected via the medicinal solution holding member.
[0015]
Therefore, in the chemical solution injection system of the present invention, when the piston member of the chemical solution syringe is press-fitted into the cylinder member, the chemical solution of the chemical solution holding member is pushed out by the chemical solution of the cylinder member, and when the chemical solution is completely pushed out, Since the chemical solution passes through the chemical solution holding member and is pushed out, the chemical solution of the chemical solution holding member and the chemical solution syringe is sequentially injected into the subject.
[0016]
It should be noted that the various components referred to in the present invention do not have to be individually independent. For example, a plurality of components are formed as one member, and a certain component is a component of another component. It is possible that it is a part, a part of a certain component overlaps a part of another component, and the like.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the following description, the directions of front, rear, left, right, up and down are defined as shown in the figure, but this is provided for the sake of simplicity in explaining the relative relationship between the respective parts. It does not limit the direction of time or use.
[0018]
[Configuration of the embodiment]
As shown in FIGS. 1 to 3, the chemical solution injection system 1000 according to the embodiment of the present invention includes a chemical solution injection device 100, a chemical solution syringe 200, an MRI apparatus 300 that is a fluoroscopic imaging device, an extension tube 400, a chemical solution holding member 500, As will be described in detail later, a contrast medium and physiological saline are injected into a subject (not shown) as a drug solution in order.
[0019]
As shown in FIG. 3, the MRI apparatus 300 includes a fluoroscopic imaging unit 301 and an imaging control unit 302 that are imaging execution mechanisms. The fluoroscopic imaging unit 301 and the imaging control unit 302 are connected to a communication network (not shown). )). The fluoroscopic imaging unit 301 captures a fluoroscopic image from the subject, and the imaging control unit 302 controls the operation of the fluoroscopic imaging unit 301.
[0020]
As shown in FIGS. 1 and 4, the chemical syringe 200 includes a cylinder member 210 and a piston member 220, and the piston member 220 is slidably inserted into the cylinder member 210. The cylinder member 210 has a cylindrical hollow main body portion 211, and a conduit portion 212 is formed on the closed end surface of the main body portion 211.
[0021]
The end surface of the main body 211 of the cylinder member 210 is opened, and the piston member 220 is inserted into the main body 211 from this opening. A cylinder flange 213 is formed on the outer periphery of the cylinder member 210, and a piston flange 221 is formed on the outer periphery of the piston member 220.
[0022]
The chemical syringe 200 is a prefilled type that is pre-filled with a chemical solution, and the cylinder member 210 is filled with a physiological saline solution having a capacity of about “25 (ml)” as a chemical solution, and a sealed cover ( (Not shown) is shipped.
[0023]
As shown in FIG. 2, the chemical injection device 100 according to the present embodiment includes an injection control unit 101 and an injection head 110 that is an injection device main body, and the injection control unit 101 and the injection head 110 are separated from each other. The communication cable 102 is wired.
[0024]
The injection head 110 drives the chemical syringe 200 to be attached to inject the chemical into the subject, and the injection control unit 101 controls the operation of the injection head 110. For this reason, the injection control unit 101 has a built-in microcomputer (not shown), and is also wired to the imaging control unit 302 of the MRI apparatus 300 via a communication network (not shown).
[0025]
In the injection control unit 101, an operation panel 103, a touch panel 104 which is a display panel, a speaker unit 105, and the like are arranged on the front surface of the main body housing 106, and a separate controller unit 107 is wired by a connection connector 108. .
[0026]
The injection head 110 is attached to the upper end of the caster stand 111 by a movable arm 112. As shown in FIG. 1, the injection head 110 has a semi-cylindrical shape on the top surface of the head main body 113 to which the chemical syringe 200 is detachably attached. A groove-shaped recess 114 is formed.
[0027]
A cylinder holding mechanism 120 that detachably holds the cylinder flange 211 of the chemical syringe 200 is formed in the front part of the recess 114, and a syringe that holds and slides the piston flange 221 behind the recess 114. A drive mechanism 130 is disposed.
[0028]
In the cylinder holding mechanism 120, a third arc-shaped immovable holding member 121 that holds the lower portion of the cylinder flange 211 is disposed at the bottom, and above the both ends of the immobile holding member 121, A movable holding member 122 having a circular arc shape that holds the lens from the left and right is arranged to be freely opened and closed.
[0029]
The syringe drive mechanism 130 has an ultrasonic motor (not shown) that does not generate a magnetic field as a drive source, and this ultrasonic motor is phosphor bronze alloy (Cu + Sn + P), titanium alloy (Ti-6Al-4V), It is made of a nonmagnetic material such as a magnesium alloy (Mg + Al + Zn). Further, a member holding mechanism 140 made of, for example, a bent wire is attached to the front end of the injection head 110, and the chemical solution holding member 500 is detachably held by the member holding mechanism 140.
[0030]
As shown in FIG. 4, the extension tube 400 has a sharp injection needle 401 inserted into the blood vessel of the subject at the tip, and the end is detachably connected to the drug solution holding member 500. As shown in FIGS. 1 and 5, the drug solution holding member 500 includes a tube member 501 wound in a hollow cylindrical shape, and at both ends thereof, an end of the extension tube 400 and a conduit portion 212 of the drug solution syringe 200. A connector member 502 that is detachably connected to each other is attached.
[0031]
The tube member 501 is formed of a hollow resin tube, and the inside functions as a flow path. For example, the tube member 501 is formed with an inner diameter of about “1.4 (mm)” and a total length of about “60 (cm)”, so that a capacity of about “10 (ml)” is secured.
[0032]
Further, the tube member 501 is wound in a hollow cylindrical shape having an outer diameter of about “9.0 (cm)”, filled with a contrast medium as a chemical solution, and sealed covers (not shown) at both ends. Shipped installed. The tube member 501 wound in a cylindrical shape is fixed by an adhesive that easily peels. Further, the contrast medium filled in the chemical liquid holding member 500 is cloudy, and the tube member 501 is formed of a transparent and light red resin.
[0033]
In the chemical injection system 1000 of this embodiment, since the filling capacity of the chemical syringe 200 and the chemical holding member 500 is defined as described above, this is registered in advance in the computer unit of the chemical injection device 100. The computer unit controls the operation of the piston drive mechanism 130 in accordance with the filling capacity registered as data.
[0034]
Furthermore, when the computer unit of the chemical solution injection device 100 controls the operation of the piston drive mechanism 130 corresponding to the filling capacity of the chemical solution syringe 200 and the chemical solution holding member 500 as described above, the computer control unit 101 of the MRI device 300 Since various data are mutually communicated, the chemical injection device 100 and the MRI apparatus 300 cooperate with each other in various operations.
[0035]
[Operation of the embodiment]
In the configuration as described above, in the chemical injection system 1000 of this embodiment, a fluoroscopic image can be taken from a subject with the MRI apparatus 300, and a contrast medium and physiological saline can be injected into the subject in order. In this case, as shown in FIG. 4, a medical solution holding member 500 for contrast medium and a medical solution syringe 200 for physiological saline are prepared, and the medical solution holding member 500 and the extension tube 400 are sequentially connected to the medical solution syringe 200.
[0036]
Next, the extension tube 400 is connected to the subject, and the chemical solution syringe 200 and the chemical solution holding member 500 are held by the injection head 110 of the chemical solution injection device 100 as shown in FIG. At this time, the cylinder member 210 of the chemical liquid syringe 200 is held by the cylinder holding mechanism 120, the piston member 220 is held by the piston drive mechanism 130, and the chemical liquid holding member 500 is held by the member holding mechanism 140.
[0037]
Then, for example, when an operator performs an input operation on use of the chemical syringe 200 and the chemical solution holding member 500 on the operation panel 103 of the chemical injection device 100, the chemical injection device 100 corresponds to the input operation. Various data such as the filling capacity with the member 500 are read out and the operation mode is set.
[0038]
In this state, when the operator inputs an operation start to the operation panel 103 of the chemical injection device 100, as shown in FIG. 6, the chemical injection device 100 that has detected this (Step S1) sets the MRI to start the operation. Data is transmitted to the apparatus 300 (step S2).
[0039]
When the work start is returned from the MRI apparatus 300 in response to the data transmission described above (step S3), the chemical injection device 100 starts a series of work (step S9 ~), but does not receive the work start data. If error guidance is received or data is received (step S3), error guidance such as “XX error. Please check the MRI device” is output on the touch panel 104 or speaker unit 105 to return to the initial state. (Step S7).
[0040]
The MRI apparatus 300 receives the work start data from the chemical injection device 100 as described above as shown in FIG. 7 in a state where the operation start is not input to the imaging control unit 302 (step T4). The self state is diagnosed (step T5), and if no error is detected by this, the work start is returned to the chemical injection device 100 (step T8).
[0041]
In addition, when an error is detected by the above self-diagnosis (step T5), the MRI apparatus 300 returns an error guidance to the liquid injector 100 (step T6) and confirms “XX error. An error guidance such as “Please” is informed and returned to the initial state (step T7).
[0042]
Even when the operator first inputs an operation start to the MRI apparatus 300 instead of the chemical injection apparatus 100, as shown in FIGS. 7 and 6, the MRI apparatus 300 and the chemical injection apparatus 100 are the same as described above. The start of work is mutually confirmed by mutual communication (steps T1 to T3, S4 to S8).
Then, as shown in FIG. 6, the chemical injection device 100 that confirms the start of the operation is such that the chemical syringe 200 discharges the chemical liquid with the filling capacity of the chemical liquid holding member 500 first, and the piston member 220 is pistoned to the cylinder member 210. Press-fitting is performed by the drive mechanism 130 (steps S9 and S10).
[0043]
Since the physiological saline is injected from the chemical solution syringe 200 to the chemical solution holding member 500, the contrast agent pressed by the physiological saline is injected from the chemical solution holding member 500 to the subject. When this injection is completed (step S10), the chemical injection device 100 temporarily stops the piston drive mechanism 130 (step S11), and transmits the completion of injection to the MRI device 300 (step S12).
[0044]
Then, as shown in FIG. 7, the MRI apparatus 300 that has received the completion of the injection (step T9) takes a fluoroscopic image from the subject into which the contrast agent has been injected (step T10), and when this imaging is completed, the liquid injection is completed. Data indicating completion of imaging is transmitted to the apparatus 100 (steps T11 and T12).
[0045]
As shown in FIG. 6, the chemical injection device 100 that has received the completion of imaging (step S13) operates the piston drive mechanism 130 corresponding to the remaining volume of the chemical syringe 200 (steps S14 to S16). Then, physiological saline is injected into the subject from the chemical solution syringe 200 through the chemical solution holding member 500.
[0046]
[Effect of the embodiment]
In the medical solution injection system 1000 of the present invention, the medical solution syringe 200 of physiological saline is connected to the subject via the contrast solution holding member 500 as described above, so that the contrast agent and the physiological saline are sequentially supplied to the subject. Can be injected into. For this reason, since it is not necessary to attach two chemical syringes to the chemical injection device 100, it is possible to prevent a medical error in which only one of the contrast medium and the physiological saline is injected into the subject in large quantities. 110 can be reduced in size and weight and the number of parts can be reduced.
[0047]
In particular, since the drug solution holding member 500 is formed of an elongated tube member 501, even if the contrast medium of the drug solution holding member 500 is pushed out with the physiological saline of the drug solution syringe 200, the physiological saline and the contrast medium are excessively mixed. There is no. Moreover, since the chemical solution holding member 500 is made of the commercially available tube member 501, the structure is simple and the productivity is good.
[0048]
In addition, since the long tube member 501 is wound in a cylindrical shape in the chemical solution holding member 500, the occupied volume is reduced and the handling is easy. Further, the chemical liquid holding member 500 has a tube member 501 wound in a hollow cylindrical shape, and the chemical liquid injection apparatus 100 has a member holding mechanism 140 made of a bent wire rod attached to the front end of the injection head 110. The chemical solution injection device 100 can detachably hold the chemical solution holding member 500 at an appropriate position with a simple structure.
[0049]
Further, the tube member 501 wound around the cylindrical shape of the chemical solution holding member 500 is fixed by an adhesive, but since the adhesive easily peels off, the tube member 501 can be freely detached from the chemical solution holding member 500 as desired. It can be pulled out. Furthermore, although the contrast agent filled in the chemical solution holding member 500 is cloudy, the tube member 501 is formed of a transparent and light red resin, so that the presence or absence of the contrast agent and the injection state can be easily confirmed. Can do.
[0050]
Furthermore, in the chemical injection device 100, the filling capacity of the chemical syringe 200 and the chemical holding member 500 is preliminarily registered as data, and the operation of the piston drive mechanism 130 is controlled according to the filling capacity registered as data. Therefore, the contrast medium and physiological saline can be accurately injected into the subject.
[0051]
Furthermore, since the liquid injector 100 and the MRI apparatus 300 cooperate with each other to perform various operations, the MRI apparatus 300 can execute fluoroscopic imaging at an appropriate timing corresponding to the injection of the contrast agent. The apparatus 100 can inject the contrast medium and the physiological saline from the chemical syringe 200 at an appropriate timing corresponding to the imaging of the fluoroscopic image.
[0052]
Moreover, in the chemical solution injection system 1000 of this embodiment, the drive source of the chemical solution injection device 100 is formed of a non-magnetic material and includes an ultrasonic motor that does not generate a magnetic field, and the chemical solution syringe 200, the extension tube 400, the chemical solution holding member 500, Since each part is formed of a non-magnetic material, the chemical injection device 100 and the chemical syringe 200 can be used without any problems in the vicinity of the MRI apparatus 300.
[0053]
In the chemical solution injection system 1000 of this embodiment, since the contrast medium of the chemical solution holding member 500 is pushed out by the physiological saline of the chemical solution syringe 200, the physiological saline that is finally stored in the chemical solution holding member 500 cannot be used. However, since the physiological saline is inexpensive and the filling capacity of the chemical liquid holding member 500 is sufficiently smaller than the filling capacity of the chemical liquid syringe 200, the waste of physiological saline is not a problem.
[0054]
[Modification of Embodiment]
The present invention is not limited to the above embodiment, and various modifications are allowed without departing from the scope of the present invention. For example, in the above embodiment, the chemical injection system 1000 is exemplified to include the MRI apparatus 300 as a fluoroscopic imaging apparatus. As such a fluoroscopic imaging apparatus, a CT scanner, a PET apparatus, an ultrasonic diagnostic apparatus, an angio apparatus, an MRA apparatus , Etc. are also possible.
[0055]
In the above embodiment, the filling capacity of the chemical syringe 200 and the chemical holding member 500 is registered in advance in the chemical injection device 100, and the chemical injection device 100 controls the injection operation corresponding to the registered data. Although illustrated, for example, a plurality of types of filling capacities of the drug syringe 200 and the drug solution holding member 500 are pre-registered in the drug solution injection device 100, and the operator may manually select the registered data. It is also possible for the operator to input the filling capacity of the drug solution syringe 200 and the drug solution holding member 500 into the drug solution injection device 100 each time.
[0056]
In this case, the operator can manually input the filling capacity by manual operation of the operation panel 103 or the touch panel 104. For example, the filling capacity and the type of the chemical liquid are registered in the chemical liquid holding member 500 and the chemical liquid syringe 200 as data. It is also possible to give the bar code mark and scan the bar code mark with the bar code reader (not shown).
[0057]
Further, in the above embodiment, the tube member 501 of the chemical solution holding member 500 is illustrated as being wound in a hollow cylindrical shape, but for example, the tube member 501 is spirally wound and formed into a disk shape. Alternatively, the disks can be stacked and formed into a hollow cylindrical shape, or can be arranged in a zigzag and formed into a flat plate shape (both not shown).
[0058]
In the above embodiment, the chemical solution holding member 500 and the extension tube 400 are illustrated as being formed separately, but it is also possible to form them integrally. Similarly, although the chemical liquid holding member 500 and the chemical liquid syringe 200 are illustrated as being formed separately, it is also possible to form them integrally.
[0059]
In this case, it is possible to simply connect the tube member 501 of the chemical solution holding member 500 to the conduit portion 212 of the chemical solution syringe 200. For example, the chemical solution syringe 200 and the chemical solution holding member 500 are mechanically connected. It is also preferable to join them.
[0060]
For example, in the chemical solution holding member 510 illustrated in FIG. 8, the inner diameter of the tube member 501 is equal to the outer diameter of the cylinder member 210, and the wound tube member 501 is on the outer peripheral surface of the cylinder member 210. Is arranged. In this case, the chemical liquid holding member 510 and the chemical liquid syringe 200 can be easily handled as one structure, and the entire occupied volume of the chemical liquid holding member 510 and the chemical liquid syringe 200 can be substantially minimized.
[0061]
Further, in the chemical solution holding member 520 illustrated in FIG. 9, the outer diameter of the tube member 501 is equal to the outer diameter of the cylinder member 210, and the wound tube member 501 is on the front end surface of the cylinder member 210. Is arranged. Also in this case, the chemical liquid holding member 520 and the chemical liquid syringe 200 can be easily handled as one structure, and the total occupied volume of the chemical liquid holding member 520 and the chemical liquid syringe 200 can be reduced. The chemical liquid holding members 510 and 520 as described above can be shipped in a state where they are fixedly bonded to the chemical liquid syringe 200, and are shipped as parts that are integrally bonded to the separate chemical liquid syringe 200. Is also possible.
[0062]
Furthermore, although the said form demonstrated that the chemical | medical solution holding member 500 was formed with the commercially available tube member 501, it can also be formed with an exclusive component. For example, the chemical liquid holding member 530 illustrated in FIG. 10 includes a plurality of types of flow path members 531 to 534 and is integrally attached to the front surface of the chemical liquid syringe 230 in which a through hole 231 is formed at the center.
[0063]
Each of the flow path members 531 to 534 is formed in a disk shape, and the flow path member 531 has a spiral flow path 536 formed from the center to the vicinity of the outer periphery. The flow path member 532 has a flow path 536 penetrated in the vicinity of the outer periphery, and the flow path member 533 has a flow path 536 penetrated in the center. The flow path member 534 is formed with a conduit portion 537 serving as a flow path 536 at the center. For example, the chemical solution holding member 530 includes the flow path members 531, 532, 531, 533, 531, ..., 532, 531 and 534. , And so on.
[0064]
In such a chemical solution holding member 530, it is necessary to form a dedicated component, but the whole can be firmly formed as a rigid body, and the dead space can be almost completely eliminated from the internal space. In particular, by forming the chemical liquid holding member 530 in an external shape that extends the chemical liquid syringe 230 as described above, the overall shape can be made equivalent to that of the conventional chemical liquid syringe 200.
[0065]
Moreover, although the chemical | medical solution injection device 100 which an operator operates demonstrated the press injection of the piston member 220 in the cylinder member 210 of the chemical | medical solution syringe 200 in the said form, it is also possible for an operator to perform this press injection by manual operation. is there. Furthermore, in the above embodiment, the extension tube 400 is also exemplified by a flexible and long tube member and a sharp injection needle. However, for example, the extension tube can be formed only by the injection needle.
[0066]
【The invention's effect】
In the chemical solution injection system of the present invention, when the piston member of the chemical solution syringe is pressed into the cylinder member, the chemical solution of the chemical solution holding member is pushed out by the chemical solution of the cylinder member, and when the chemical solution is completely pushed out, the chemical solution of the cylinder member is Since the drug solution holding member is pushed out and pushed out, the drug solution of the drug solution holding member and the drug solution syringe can be injected into the subject in order in a simple and reliable manner.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a chemical syringe and a chemical holding member are attached to and detached from a chemical injection device in the chemical injection system according to the embodiment of the present invention.
FIG. 2 is a perspective view showing an appearance of a chemical liquid injector.
FIG. 3 is a perspective view showing an appearance of an MRI apparatus which is a fluoroscopic imaging apparatus.
FIG. 4 is a schematic view showing a state in which a chemical liquid syringe, a chemical liquid holding member, and an extension tube are connected.
FIG. 5 is a perspective view showing an appearance of a chemical liquid holding member.
FIG. 6 is a flowchart showing the processing operation of the chemical liquid injector.
FIG. 7 is a flowchart showing the processing operation of the MRI apparatus.
FIG. 8 is an exploded perspective view showing the external appearance of a chemical liquid holding member and a chemical liquid syringe of a first modified example.
FIG. 9 is an exploded perspective view showing appearances of a chemical liquid holding member and a chemical liquid syringe of a second modified example.
FIG. 10 is an exploded perspective view showing the external appearance of a chemical liquid holding member and a chemical liquid syringe of a third modified example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 Chemical liquid injection apparatus 140 Member holding mechanism 200 Chemical liquid syringe 210 Cylinder member 220 Piston member 400 Extension tube 500,510,520,530 Chemical liquid holding member 501 Tube member 536 Channel 1000 Chemical liquid injection system

Claims (22)

A drug solution injection system having a drug solution syringe in which a piston member is slidably inserted into a cylinder member filled with a drug solution, and an extension tube connecting the cylinder member of the drug solution syringe and a subject. ,
It also has a chemical liquid holding member in which an elongated channel filled with a predetermined volume of chemical liquid different from the chemical syringe is formed,
A chemical injection system in which the cylinder member and the extension tube are connected via the chemical holding member. The chemical solution injection system according to claim 1, wherein the chemical solution holding member is a long tube member collected in a predetermined shape. The chemical solution injection system according to claim 2, wherein the tube member is wound in a cylindrical shape. The outer diameter of the tube member winding is equal to the outer diameter of the cylinder member, the chemical liquid holding member,
The chemical | medical solution injection system of Claim 3 with which the said tube member currently wound is arrange | positioned on the front end surface of the said cylinder member. The inner diameter of the tube member winding is equal to the outer diameter of the cylinder member, the chemical liquid holding member,
The chemical | medical solution injection system of Claim 3 with which the said tube member wound is arrange | positioned on the outer peripheral surface of the said cylinder member. The chemical | medical solution injection | pouring system as described in any one of Claim 3 thru | or 5 with which the said wound tube member is fixed by the adhesive agent so that peeling is possible. The chemical solution injection system according to any one of claims 1 to 6, wherein the cylinder member and the chemical solution holding member are integrally formed. The chemical injection system according to any one of claims 2 to 7, wherein the tube member and the extension tube are integrally formed. 9. The chemical solution injection system according to claim 1, wherein the chemical solution injection system is formed of a transparent resin having a color different from that of the chemical solution filled in the tube member. It also has a fluoroscopic imaging device that captures a fluoroscopic image from the subject,
The chemical solution holding member is filled with a contrast agent that contrasts the fluoroscopic image as the chemical solution,
The chemical solution injection system according to any one of claims 1 to 9, wherein the chemical solution syringe is filled with physiological saline as the chemical solution. It also has a chemical liquid injector that relatively moves the cylinder member and the piston member of the chemical syringe.
Data storage means for storing the filling capacity of the chemical liquid syringe and the chemical liquid holding member;
An operation control means for controlling the relative movement between the cylinder member and the piston member in accordance with the filling capacity stored as data;
The chemical injection system according to any one of claims 1 to 10, further comprising: The liquid injector also includes a liquid injector that moves the cylinder member and the piston member of the liquid syringe relative to each other. The liquid injector includes data that stores the filling capacity of the liquid syringe and the liquid holder. Storage means and operation control means for controlling the relative movement between the cylinder member and the piston member corresponding to the filling capacity stored as data,
The chemical injection system according to claim 10, wherein an injection operation of the chemical injection device and an imaging operation of the fluoroscopic imaging device are interlocked. A chemical solution injection device that relatively moves the cylinder member and the piston member of the chemical solution syringe, and the chemical solution injection device includes a member holding mechanism that detachably holds the chemical solution holding member. 13. The chemical solution injection system according to any one of 1 to 12. A chemical liquid holding member of the chemical liquid injection system according to any one of claims 1 to 13,
A medicinal solution holding member formed with an elongated flow path filled with a predetermined amount of medicinal solution different from the medicinal solution syringe and connected to the cylinder member and the extension tube. The chemical | medical solution holding member of Claim 14 which consists of a long tube member put together in the predetermined shape. The chemical | medical solution holding member as described in any one of Claim 14 or 15 with which the said tube member is wound cylindrically. The chemical | medical solution holding member as described in any one of Claims 14 thru | or 16 currently formed integrally with the said cylinder member. The chemical solution holding member according to any one of claims 14 to 17, wherein the tube member is formed integrally with the extension tube. It is a chemical | medical solution syringe of the chemical | medical solution injection system as described in any one of Claims 1 thru | or 13, Comprising:
A chemical syringe in which the chemical holding member is connected to the cylinder member. A contrast medium initially injected into the subject whose fluoroscopic image is captured by the fluoroscopic imaging device is filled in the liquid medicine holding member as the liquid medicine,
The drug syringe according to claim 19, wherein the cylinder member is filled with physiological saline that is subsequently injected into the contrast medium. A chemical injection device for a chemical injection system according to any one of claims 11 to 13,
Data storage means for storing the filling capacity of the chemical liquid syringe and the chemical liquid holding member;
An operation control means for controlling the relative movement between the cylinder member and the piston member in accordance with the filling capacity stored as data;
A chemical injection device. A chemical injection device for a chemical injection system according to claim 13,
A chemical liquid injector having a member holding mechanism for detachably holding the chemical liquid holding member.

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