JP5027888B2 - Operation check device for chemical injection device - Google Patents

Description

  The present invention relates to an operation confirmation device that supports operation confirmation of a chemical solution injector, and in particular, an operation of a chemical solution injector that injects a chemical solution into a subject by driving a chemical syringe in which a piston member is slidably inserted into a cylinder member. The present invention relates to an operation confirmation device that supports confirmation.

  At present, CT (Computed Tomography) scanner, MRI (Magnetic Resonance Imaging) apparatus, PET (Positron Emission Tomography) apparatus, ultrasonic diagnostic apparatus, CT angio apparatus, MRA (MR) Angio) equipment, etc. When using the fluoroscopic imaging apparatus as described above, a chemical solution such as a contrast medium or physiological saline may be injected into a subject, and a chemical solution injection apparatus that automatically executes this injection has also been put into practical use.

  Such a chemical solution injection device has, for example, a piston drive mechanism formed by a drive motor, a slider mechanism, etc., and a chemical solution syringe is detachably loaded. The chemical syringe generally has a cylinder member and a piston member, and the piston member is slidably inserted into the cylinder member.

  More specifically, the cylinder member is formed in a cylindrical shape, a conduit portion is formed at the center of the closed front end, and the rear end is opened. An annular cylinder flange is formed on the outer periphery of the rear end, and a piston member is slidably inserted into the inside from the rear end opening.

  When injecting the chemical solution of the chemical solution syringe as described above into the subject, an operator prepares a chemical solution syringe of an appropriate chemical solution, and connects the chemical solution syringe to the subject with an extension tube. The chemical solution syringe in such a state is loaded into the chemical solution injection device, and the cylinder flange is held by the flange holding mechanism.

  In such a state, the chemical solution injection device press-fits the piston member into the cylinder member by the piston drive mechanism in response to a predetermined operation, so that the chemical solution is injected from the chemical solution syringe to the subject.

  In that case, when the operator determines the injection speed, the total injection amount, etc. in consideration of the type of the chemical solution and inputs it to the chemical injection device, this chemical injection device injects the chemical into the subject according to the input data. .

  For example, if a contrast medium is injected as a chemical solution, the contrast level of the subject changes, and a good fluoroscopic image is captured by the fluoroscopic imaging device. Although the contrast medium has a high viscosity, the chemical liquid injector is suitable for injecting the contrast medium because the piston member can be pressed into the cylinder member of the chemical liquid syringe at a high pressure.

However, it is of course dangerous to inject such a high-viscosity contrast agent into a subject at a high pressure. For this reason, the current chemical injection device has a function of measuring the injection pressure in real time and displaying the graph (see, for example, Patent Document 1).
JP 2003-290343 A

  In the above-described chemical solution injection device, the pressure of the chemical solution injected into the subject can be displayed in a graph and recorded as necessary. However, in the current medical field, it is required to confirm the operation of the chemical injection device before actually injecting the chemical into the subject.

  For example, the piston drive mechanism can be moved without mounting the chemical syringe on the chemical injection device. However, this only causes the piston drive mechanism to idle, and the injection of the chemical cannot be simulated.

  The present invention has been made in view of the problems as described above, and provides an operation confirmation device capable of supporting the confirmation of the operation of the chemical liquid injector similar to the case of actually injecting a chemical liquid into a subject. Objective.

  The operation check device of the present invention is an operation check device that supports the operation check of a chemical liquid injector that drives a chemical liquid syringe in which a piston member is slidably inserted into a cylinder member and injects a chemical liquid into a subject. Like the member, the dummy main body member held by the chemical liquid injection device, the dummy slide member slid to the chemical liquid injection device like the piston member, and the chemical liquid injection device holding the dummy main body member slides the dummy slide member. And a dummy resistance mechanism for generating a movement resistance equivalent to that when a chemical solution is injected with a chemical solution syringe.

  Therefore, in the operation check device of the present invention, the dummy main body member is held by the chemical liquid injector like the cylinder member, and the dummy slide member is slid to the chemical liquid injector like the piston member. In this way, the dummy resistance mechanism generates a movement resistance equivalent to that when the chemical solution is injected by the chemical solution syringe when the chemical injection device holding the dummy main body member slides the dummy slide member. For this reason, the chemical injection device operates in the same manner as when actually injecting a chemical into a subject.

  In the operation check device of the present invention, the dummy resistance mechanism may be set such that the generated movement resistance is variable.

  In the operation check device of the present invention, there are a plurality of types of chemical syringes having different movement resistances, and the dummy resistance mechanism may vary the movement resistance in a plurality of stages equivalent to the plurality of types of chemical syringes.

  In the operation check device of the present invention, the chemical syringe has a cylinder flange that is held by the chemical injection device on the outer periphery of the rear end of the cylinder member, and the dummy main body member is a chemical injection device similar to the cylinder flange. The dummy flange to be held is formed in a front-rear symmetrical shape formed at the front end and the rear end, and the dummy slide member may be formed in a front-rear symmetrical shape penetrating the dummy main body member in the front-rear direction. .

  Further, in the operation checking device of the present invention, the dummy main body member is composed of a pair of hollow structures filled with fluid in the same manner as the cylinder member, and the dummy slide member is individually attached to the pair of dummy main body members similarly to the piston member. The dummy resistance mechanism may include a connecting pipe that connects the pair of dummy main body members and allows fluid to flow.

  In the operation check device of the present invention, the dummy resistance mechanism may further include a variable valve that is inserted into the connecting pipe and varies the flow resistance of the fluid.

  In the operation check device of the present invention, the dummy main body member may be a cylinder member, and the dummy slide member may be a piston member.

  In the operation check device of the present invention, the chemical injection device may be configured such that the chemical syringe is detachably loaded from above and the pair of dummy main body members are connected in parallel in the vertical direction.

  Further, in the operation checking device of the present invention, the chemical liquid injector includes a pair of chemical liquid syringes loaded in parallel in the left-right direction, and the dummy main body member has a pair of left and right in a state of being loaded into the chemical liquid injector similar to the chemical liquid syringe. It may be connected in parallel in the direction.

  In the operation check device of the present invention, the dummy resistance mechanism may have a damper mechanism.

  In the operation check device of the present invention, the dummy resistance mechanism may have an elastic mechanism.

  In the operation check device of the present invention, the dummy resistance mechanism may have a conston mechanism.

  Further, in the operation checking device as described above, the dummy main body member is formed in a cylindrical hollow structure filled with fluid like the cylinder member, and the dummy slide member is the dummy main body member like the piston member. A dummy slide head that slides in a sealed state is formed, and the dummy resistance mechanism may generate a fluid flow resistance as a movement resistance in the dummy slide head that slides.

  Moreover, the above-described operation confirmation device may further include a pressure detection mechanism that detects the pressure of the fluid that generates the flow resistance as the movement resistance.

  Further, in the operation confirmation device as described above, the pressure detection mechanism may be detachably attached to the dummy main body member.

  The various components of the present invention do not necessarily have to be independent of each other. A plurality of components are formed as a single member, and a single component is formed of a plurality of members. It may be that a certain component is a part of another component, a part of a certain component overlaps with a part of another component, or the like.

  Further, in the present invention, the front, rear, left, right, and up and down directions are defined, but this is defined for convenience in order to briefly explain the relative relationship of the components of the present invention. The direction at the time of manufacture and use is not limited.

  In the operation check device of the present invention, the dummy main body member is held by the chemical liquid injector similarly to the cylinder member, and the dummy slide member is slid to the chemical liquid injector similar to the piston member. In this way, the dummy resistance mechanism generates a movement resistance equivalent to that when the chemical solution is injected by the chemical solution syringe when the chemical injection device holding the dummy main body member slides the dummy slide member. For this reason, the chemical injection device can be operated in the same manner as when actually injecting a chemical into a subject. Therefore, the operation of the chemical solution injector can be accurately confirmed before actually injecting the chemical solution into the subject.

The above-described object and other objects, features, and advantages will become more apparent from the preferred embodiments described below and the accompanying drawings.
It is a perspective view which shows the state with which the operation confirmation apparatus of embodiment of this invention is loaded into a chemical | medical solution injection device. It is a perspective view which shows the state by which a chemical | medical solution syringe is loaded in the injection execution head of a chemical | medical solution injection device. It is a perspective view which shows the external appearance of a chemical injection device. It is a perspective view which shows the external appearance of CT scanner which is a fluoroscopic image apparatus. It is a typical vertical side view which shows the internal structure of the operation confirmation apparatus of one modification. It is a vertical side view which shows the internal structure of the operation confirmation apparatus of another modification. FIG. It is a vertical side view which shows the internal structure of the operation confirmation apparatus of another modification. It is a vertical side view which shows the internal structure of the operation confirmation apparatus of another modification. It is a side view which shows the external appearance of the operation confirmation apparatus of another modification. It is a perspective view which shows the external appearance of the operation confirmation apparatus of another modification. Furthermore, it is a perspective view which shows the state by which the operation | movement confirmation apparatus and chemical | medical solution syringe of another modification are loaded into a chemical | medical solution injection apparatus. It is a vertical side view which shows the internal structure of the operation confirmation apparatus of another modification. FIG. It is a vertical side view which shows the internal structure of the operation confirmation apparatus of another modification. It is a side view which shows the external appearance of the operation confirmation apparatus of another modification. It is a perspective view which shows the external appearance of the operation confirmation apparatus of another modification.

  Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 4, the chemical injection system 1000 of this embodiment includes a chemical injection device 100, a chemical syringe 200, a CT scanner 300 that is a fluoroscopic imaging device, and an operation confirmation device 400.

  As shown in FIG. 4, the CT scanner 300 includes a fluoroscopic imaging unit 301 and an imaging control unit 302, and the fluoroscopic imaging unit 301 and the imaging control unit 302 are connected via a communication network (not shown). Has been. 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.

  As shown in FIG. 2, 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 cylinder body 211, and a conduit portion 212 is formed at the center of the closed front end of the cylinder body 211.

  The rear end of the cylinder body 211 of the cylinder member 210 is opened, and the piston member 220 is slidably inserted into the cylinder body 211 from this opening. The cylinder member 210 has an annular cylinder flange 213 formed on the outer periphery of the rear end of the cylinder body 211, and the piston member 220 has an annular piston flange 222 formed on the outer periphery of the piston body 221.

  As shown in FIG. 3, the chemical injection device 100 of the present embodiment includes an injection control unit 101 and an injection execution head 110 that are formed separately, and the injection control unit 101 and the injection execution head 110 are connected to a communication cable 102. Wired connection. The injection execution head 110 drives the attached chemical solution syringe 200 to inject the chemical solution into the subject, and the injection control unit 101 controls the operation of the injection execution head 110.

  As shown in FIG. 2, a semi-cylindrical recess 114 into which the cylinder member 210 of the chemical syringe 200 is detachably mounted is formed on the upper surface of the head main body 113 which is a main body holding member of the injection execution head 110. Has been.

  A flange holding mechanism 120 that detachably holds the cylinder flange 213 of the chemical solution syringe 200 is formed at the front part of the concave part 114, and a piston that holds and slides the piston flange 222 behind the concave part 114. A drive mechanism 116 is disposed.

  The piston drive mechanism 116 has, for example, an ultrasonic motor that does not generate a magnetic field even when it is operated as a drive source, and slides the piston member 220 by a screw mechanism or the like (not shown). The piston drive mechanism 116 also includes a load cell, which detects the pressure that presses the piston member 220 (not shown).

  The injection control unit 101 connected to the injection execution head 110 having the above-described structure by the communication cable 102 incorporates a computer unit and controls the operation of the piston drive mechanism 116.

  At this time, since the piston driving mechanism 116 detects the pressure for press-fitting the piston member 220 into the cylinder member 210 of the chemical syringe 200 in real time by the load cell, this pressure is fed back to the injection control unit 101 and displayed in a graph in real time.

  As described above, the operation check device 400 according to the present embodiment drives the chemical syringe 200 in which the piston member 220 is slidably inserted into the cylinder member 210 to check the operation of the chemical injection device 100 that injects the chemical into the subject. It is used for supporting.

  For this reason, as shown in FIG. 1, the operation check apparatus 400 of the present embodiment includes a dummy main body member 410 held by the chemical liquid injector 100 as in the cylinder member 210 and a chemical liquid injector as in the piston member 220. The dummy slide member 420 slid to 100 and the chemical injection device 100 holding the dummy main body member 410 have a movement resistance equivalent to that when the chemical solution is injected by the chemical syringe 200 when the dummy slide member 420 is slid. And a dummy resistance mechanism 430 to be generated.

  The dummy main body member 410 has a dummy main body 411 having the same outer shape as the cylinder main body 211 of the cylinder member 210, and a dummy flange 413 having the same outer shape as the cylinder flange 213 is formed on the outer periphery of the rear end.

  The dummy slide member 420 has an outer shape equivalent to that of the piston member 220 protruding rearward from the cylinder member 210. For this reason, the dummy slide member 420 has a dummy flange 422 having the same outer shape as the piston flange 222 formed on the outer periphery of the rear end of the dummy main body 421 having the same outer shape as the piston main body 221.

  For example, the dummy resistance mechanism 430 is built in the dummy main body member 410, and the dummy slide member 420 is connected thereto. The dummy resistance mechanism 430 is formed of, for example, an existing damper mechanism that generates a movement resistance.

  As such a damper mechanism, for example, “Kinechek (registered trademark)” is used. The dummy resistance mechanism 430 has an operation portion 431 that can be manually rotated at the front end, and a movement resistance generated by manual operation of the operation portion 431 is variably set.

  There are a plurality of types of chemical syringes 200 having different movement resistances. Therefore, a scale 432 is shown at the front end of the dummy main body member 410, and the dummy resistance mechanism 430 moves in a plurality of stages equivalent to a plurality of types of drug solution syringes 200 by associating the operation unit 431 with the scale 432. Variable resistance.

  In the configuration as described above, when using the chemical injection system 1000 of this embodiment, as shown in FIG. 4, the injection execution head 110 of the chemical injection device 100 is disposed in the vicinity of the fluoroscopic imaging unit 301 of the CT scanner 300, A chemical syringe 200 and an operation confirmation device 400 to be used are prepared.

  In such a state, the operator loads the operation check device 400 into the injection execution head 110 of the chemical liquid injector 100 as shown in FIG.

  At this time, the operation unit 431 of the operation check device 400 is manually operated to correspond to the chemical syringe 200 that uses the movement resistance. In such a state, the chemical liquid injector 100 is operated in the same manner as when the chemical liquid is actually injected into the subject with the chemical syringe 200.

  Then, in this chemical injection device 100, the dummy slide member 420 is press-fitted into the dummy main body member 410 by the piston drive mechanism 116 with the dummy flange 413 of the operation check device 400 held by the flange holding mechanism 120.

  At this time, the operation check apparatus 400 causes the dummy slide member 420 to generate a movement resistance similar to that of the actually used chemical syringe 200 by the dummy resistance mechanism 430. Therefore, the piston drive mechanism 116 detects the movement resistance of the dummy slide member 420 to be press-fitted in real time. This movement resistance is graphically displayed on the injection control unit 101 in real time.

  An operator who confirms the operation of the chemical injection device 100 using the display graph removes the operation confirmation device 400 from the injection execution head 110 and returns the piston drive mechanism 116 to the initial position.

  Next, the drug syringe 200 that is actually used is connected to the blood vessel of the subject with an extension tube (not shown). The chemical solution syringe 200 is loaded into the injection execution head 110 and the chemical solution injection device 100 is operated.

  Then, in this chemical solution injection device 100, the piston drive mechanism 116 press-fits the piston member 220 into the cylinder member 210 while the cylinder flange 213 of the chemical solution syringe 200 is held by the flange holding mechanism 120.

  At this time, the movement resistance of the piston member 220 into which the piston drive mechanism 116 is press-fitted is detected in real time, and this movement resistance is displayed in a graph in real time by the injection control unit 101.

  As described above, since the movement resistance generated by the operation check device 400 is equivalent to that of the chemical syringe 200, the display graph of the chemical injection device 100 described above is also equivalent between the chemical syringe 200 and the operation check device 400 if there is no problem.

  The operation check device 400 of the present embodiment can operate the chemical liquid injector 100 as in the case where the chemical liquid is actually injected into the subject as described above. Therefore, it is possible to accurately confirm the operation of the chemical solution injector 100 before actually injecting the chemical solution to the subject.

  In particular, the operation check apparatus 400 of the present embodiment is manufactured using an existing damper mechanism. For this reason, the structure is simple and a constant movement resistance can be generated. In addition, the liquid syringe 200 that generates a substantially constant movement resistance regardless of the relative positions of the cylinder member 210 and the piston member 220 can be easily reproduced by the operation check device 400.

  Furthermore, the dummy resistance mechanism 430 of the operation check apparatus 400 according to the present embodiment varies the movement resistance in a plurality of stages equivalent to the plurality of types of drug solution syringes 200. For this reason, even if there are multiple types of drug syringes 200 with different movement resistances, the movement resistances can be easily reproduced.

  As described above, in the operation check apparatus 400 using the existing variable resistance damper mechanism, the dummy body member 410 is press-fitted by, for example, manually operating the operation unit 431 to minimize the movement resistance. The dummy slide member 420 can be easily pulled out manually.

  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 use of the damper mechanism as the dummy resistance mechanism 430 of the operation check apparatus 400 is exemplified.

  However, a tension spring, which is an elastic mechanism, can be used as the dummy resistance mechanism 501 as in the operation confirmation apparatus 500 illustrated in FIG. In this operation check device 500, the dummy slide member 503 press-fitted into the dummy main body member 502 by the chemical injection device 100 automatically returns to the initial position.

  Therefore, unlike the operation check device 400 described above, it is not necessary to manually return the dummy slide member 420 press-fitted into the dummy main body member 410 to the initial position. Note that a compression spring (not shown), which is an elastic mechanism, can be used as a dummy resistance mechanism (not shown) instead of the tension spring described above.

  In the above-described operation checking device 500, the movement resistance also increases substantially linearly when the dummy slide member 503 is press-fitted into the dummy main body member 502. In other words, when the substantially constant movement resistance is required, the above-described operation check device 400 is appropriate, and when more simple operability is required, the above-described operation check device 500 is appropriate.

  In addition, by combining the damper mechanism and the spring, it is possible to release the movement resistance manually and automatically return the dummy slide member to the initial position while generating a substantially constant movement resistance when the dummy slide member is press-fitted. Not impossible (not shown).

  In the operation check device 400 of the above embodiment, the dummy slide member 420 press-fitted into the dummy main body member 410 with a substantially constant movement resistance is returned to the initial position by manual operation.

  However, like the operation confirmation device 510 illustrated in FIGS. 6 and 7, the dummy main body member 511 is formed in a symmetrical shape in which the dummy flange 512 is formed at the front end and the rear end, and the dummy slide member 513 may be formed in a longitudinally symmetrical shape penetrating the dummy main body member 511 in the front-rear direction.

  In this operation check device 510, the dummy resistance mechanism 514 includes a pair of rotary dampers. The dummy resistance mechanism 514 rotatably supports the pinion gear 515. Racks 516 are formed on both side surfaces of the dummy slide member 513, and a pinion gear 515 is engaged with the rack 516 from both sides.

  Guide rollers 517 are also attached to both ends of the dummy body member 511, and the dummy slide member 513 is supported by the guide rollers 517 so as to be slidable in the front-rear direction.

  In this operation checking device 510, even if the dummy slide member 513 is press-fitted into the dummy body member 511 after being loaded into the drug solution injection device 100, the dummy body member can be simply reversed and loaded again into the drug solution injection device 100. The dummy slide member 513 can be press-fitted into 511 again.

  For this reason, even in the structure in which the dummy resistance mechanism 514 generates a constant movement resistance, there is no need to perform an operation for returning the dummy slide member 513 press-fitted into the dummy main body member 511 to the initial position.

  Also, in the operation check device 520 illustrated in FIG. 8, the dummy main body member 521 is formed in a longitudinally symmetrical shape in which the dummy flange 522 is formed at the front end and the rear end, and the dummy slide member 523 is the dummy main body. It is formed in a longitudinally symmetrical shape that penetrates the member 521 in the longitudinal direction.

  However, in this operation check device 520, the joint between the dummy slide member 523 and the dummy main body member 521 is sealed. Further, the dummy slide member 523 is integrally formed with a disk-shaped portion 524.

  An elastic packing 526 that is in close contact with the cylindrical internal space of the dummy main body member 521 is attached to the outer peripheral portion of the disk-shaped portion 524 of the dummy slide member 523. A small-diameter channel is penetrated as a dummy resistance mechanism 525 through the disk-shaped portion 524.

  In this operation check device 520, when the dummy slide member 523 is press-fitted into the dummy main body member 521, the fluid sealed there flows through the dummy resistance mechanism 525 including a small-diameter channel.

  In this operation check device 520, the movement resistance of the dummy slide member 523 is generated by the flow resistance of the fluid. For this reason, the movement resistance very similar to the actual chemical | medical solution syringe 200 can be generated.

  In addition, as the fluid of the above-described operation check device 520, for example, the same contrast agent as that of the actual chemical syringe 200, general tap water, air, or the like can be used. If a contrast medium is used as the fluid, the movement resistance of the chemical syringe 200 can be reproduced more satisfactorily. On the other hand, if air is used as the fluid, the leakage need not be a problem.

  Furthermore, in the operation check device 530 illustrated in FIG. 9, the outer peripheral surface of the disk-shaped portion 532 of the dummy slide member 531 is opposed to the inner peripheral surface of the internal space of the dummy main body member 521 with a minute gap. Yes.

  In this operation check device 530, the gap between the outer peripheral surface of the disk-shaped portion 532 of the dummy slide member 531 and the inner peripheral surface of the internal space of the dummy main body member 521 functions as a dummy resistance mechanism 533 that is a minute flow path. For this reason, movement resistance can be generated by fluid resistance with a simpler structure.

  Moreover, the operation confirmation apparatus 400 of the said form illustrated that it was formed with the components for exclusive use. However, an existing drug solution syringe 200 can be used as in the operation confirmation device 540 illustrated in FIG.

  In this operation check device 540, a pair of chemical syringes 200 are arranged linearly in a reverse state, and a conduit portion 212 of a cylinder member 210 that is a dummy main body member is connected by a connecting pipe 541.

  A variable valve that changes the flow resistance of the fluid is also built in the connecting pipe 541 as a dummy resistance mechanism 543, and an operation portion 542 that changes the fluid resistance of the variable valve protrudes from the connecting pipe 541. In this operation check device 540, the piston member 220 of the pair of chemical syringes 200 functions as a dummy slide member.

  In this operation check device 540, when one of the pair of chemical solution syringes 200 is loaded into the chemical solution injection device 100 and the piston member 220 is press-fitted, the piston member 220 of the other chemical solution syringe 200 returns to the initial position.

  For this reason, this operation check device 540 can also generate a movement resistance by a fluid resistance, and does not require an operation of returning the piston member 220 press-fitted as a dummy slide member to the initial position.

  In the above-described operation check device 540, when one chemical syringe 200 is loaded on the injection execution head 110 of the chemical injection device 100, the other chemical syringe 200 protrudes significantly forward from the injection execution head 110. Become. For this reason, a sufficient space is required in front of the injection execution head 110 and the connecting pipe 541 needs a sufficient mechanical strength.

  Therefore, in order to solve such a problem, in the operation check device 550 illustrated in FIG. 11, a pair of drug syringes 200 arranged in the same direction are connected in the vertical direction. More specifically, the cylinder body 211 and the cylinder flange 213 of the pair of cylinder members 210 are connected by connecting members 551 and 552.

  In this operation check device 550, the movement resistance can be generated by the fluid resistance, and there is no need to return the piston member 220 press-fitted as a dummy slide member to the initial position.

  In addition, when one chemical syringe 200 is loaded into the injection execution head 110 of the chemical injection device 100, the other chemical syringe 200 does not significantly protrude forward from the injection execution head 110. For this reason, useless space is unnecessary in front of the injection execution head 110, and useless mechanical strength is not required for the connecting pipe 541.

  Further, in the above embodiment, the chemical solution injection device 100 in which only one chemical solution syringe 200 is mounted in one recess 114 of the injection execution head 110 is illustrated. However, as shown in FIG. 12, there is also a chemical liquid injector 131 in which a plurality of chemical syringes 200 are individually attached to the plurality of recesses 114 of the injection execution head 130.

  In such a chemical solution injector 131, for example, a chemical solution syringe 200 of contrast medium and physiological saline is loaded at a time. Even in such a chemical liquid injector 131, for example, the above-described operation check device 400 can be individually loaded in each of the pair of recesses 114.

  However, in the operation check device 560 illustrated in FIG. 12, the pair of chemical syringes 200 are connected in parallel in the left-right direction by the connecting member 561. For this reason, the operation | movement of a pair of piston drive mechanism 116 of the chemical | medical solution injection apparatus 131 can be confirmed in order with one operation confirmation apparatus 560.

  Furthermore, in the operation check device 570 illustrated in FIGS. 13 and 14, the dummy resistance mechanism 571 includes a conston (constant load spring) mechanism. The dummy resistance mechanism 571 including the Conston mechanism generates a certain movement resistance when the dummy slide member 573 is press-fitted into the dummy main body member 572 by the chemical solution injection device 100.

  Nevertheless, when the press-fitting by the chemical solution injector 100 is released, the dummy resistance mechanism 571 including the Conston mechanism can automatically return the dummy slide member 573 to the initial position. For this reason, it is possible to improve the operability while generating a certain movement resistance.

  Furthermore, in the said form, in order to demonstrate easily, it assumed that the size of the chemical | medical solution syringe 200 with which the chemical | medical solution injection apparatus 100 is mounted | worn is one. However, in the existing chemical solution injection system, the chemical solution syringe 200 has a plurality of sizes.

  Therefore, the chemical liquid injection device 100 is directly loaded with the chemical liquid syringe 200 of the maximum size, and for example, chemical liquid syringes of sizes other than the maximum are loaded via a cylinder adapter (not shown).

  In this case, for example, the above-described operation confirmation device 400 may be formed in the same size as the chemical syringe 200 of the minimum size, and a cylinder adapter (not shown) schematically representing the maximum size may be prepared.

  Further, in the operation check device 580 illustrated in FIG. 15, the dummy main body member 581 is formed in a cylindrical hollow structure filled with fluid in the same manner as the cylinder member. Similar to the operation check device 520 illustrated in FIG. 8, the dummy slide member 582 is formed with a dummy slide head 583 that slides in a sealed manner inside the dummy main body member 581 similarly to the piston member. The resistance mechanism 584 is formed of a small hole that generates a fluid flow resistance as a movement resistance in the sliding dummy slide head 583.

  In this operation check device 580, the dummy main body member 581 is formed in a structure that can inject a fluid such as tap water from the tip similarly to the cylinder member, and an opening opening / closing mechanism 586 for opening and closing the opening 585 at the tip is also formed. Has been. In addition, an air discharge mechanism 587 that discharges air when fluid is injected is formed at the end of the dummy main body member 581.

  Furthermore, this operation check device 580 also has a pressure detection mechanism 588 that detects the pressure of a fluid that generates a flow resistance as a movement resistance, and this is detachably attached to the opening 585 at the tip of the dummy main body member 581.

  In the operation check device 580 having the above-described structure, the dummy resistance mechanism 584 generates a fluid flow resistance as a movement resistance in the dummy slide head 583 that slides as described above.

  At this time, if the pressure detection mechanism 588 is attached to the opening 585 of the dummy main body member 581 opened by the opening opening / closing mechanism 586, the pressure of the fluid that generates the flow resistance as the movement resistance is detected.

  For this reason, when the operation of the chemical injection device 100 is confirmed by the operation confirmation device 580, the pressure for sliding the dummy slide member 582 can be clearly confirmed by the pressure detection mechanism 588.

  Further, like the operation check device 590 illustrated in FIG. 16, a pressure detection mechanism 588 for detecting the pressure of the fluid flowing therethrough is attached to the position of the connecting pipe 541 of the operation check device 540 illustrated in FIG. Also good.

  Similarly, a pressure detection mechanism 588 for detecting the pressure of the fluid flowing therethrough is attached to the position of the connecting pipe 541 of the operation confirmation device 550 illustrated in FIG. 11 like the operation confirmation device 591 illustrated in FIG. May be. In the operation check devices 580, 590, and 591 as described above, the pressure detection mechanism 588 can be fixed without being detachable.

Claims (14)

An operation confirmation device that supports operation confirmation of a chemical liquid injector that drives a chemical liquid syringe in which a piston member is slidably inserted into a cylinder member and injects a chemical liquid into a subject,
A dummy main body member held by the chemical liquid injector as in the cylinder member;
A dummy slide member that is slid and moved to the chemical injection device in the same manner as the piston member;
A dummy resistance mechanism that generates a movement resistance equivalent to that when the chemical solution is injected with the chemical solution syringe when the chemical solution injection device that holds the dummy main body member slides the dummy slide member ;
The chemical syringe is formed with a cylinder flange held by the chemical injection device on the outer periphery of the rear end of the cylinder member.
The dummy body member is formed in a front-rear symmetrical shape in which a dummy flange held by the chemical liquid injector is formed at the front end and the rear end in the same manner as the cylinder flange.
The operation check device , wherein the dummy slide member is formed in a symmetrical shape passing through the dummy main body member in the front-rear direction . An operation confirmation device that supports operation confirmation of a chemical liquid injector that drives a chemical liquid syringe in which a piston member is slidably inserted into a cylinder member and injects a chemical liquid into a subject,
A dummy main body member held by the chemical liquid injector as in the cylinder member;
A dummy slide member that is slid and moved to the chemical injection device in the same manner as the piston member;
A dummy resistance mechanism that generates a movement resistance equivalent to that when the chemical solution is injected with the chemical solution syringe when the chemical solution injection device that holds the dummy main body member slides the dummy slide member ;
The dummy main body member is composed of a pair of hollow structures filled with fluid like the cylinder member,
The dummy slide member consists of a pair that is slidably inserted into the pair of dummy main body members in the same manner as the piston member,
The dummy resistance mechanism is an operation check device having a connecting pipe that connects a pair of the dummy main body members and allows the fluid to flow . The operation check apparatus according to claim 2 , wherein the dummy resistance mechanism further includes a variable valve that is inserted into the connecting pipe and varies a flow resistance of the fluid. The dummy body member is composed of the cylinder member,
The operation check device according to claim 2 , wherein the dummy slide member includes the piston member. The chemical injection device is detachably loaded with the chemical syringe from above,
The operation check device according to any one of claims 2 to 4 , wherein the pair of dummy main body members are connected in parallel in the vertical direction. The chemical injection device is loaded with a pair of chemical syringes in parallel in the left-right direction,
The said dummy main body member is an operation check apparatus as described in any one of Claim 2 thru | or 4 with which the pair was connected in parallel with the left-right direction in the state with which it loads with the said chemical | medical solution injection device like the said chemical | medical solution syringe. The operation check device according to any one of claims 1 to 6, wherein the dummy resistance mechanism is configured such that the generated movement resistance is variably set. The chemical syringe has a plurality of types with different movement resistances,
The operation check device according to claim 7 , wherein the dummy resistance mechanism varies the movement resistance in a plurality of stages equivalent to a plurality of types of the chemical syringes. The operation check device according to claim 1 , wherein the dummy resistance mechanism includes a damper mechanism. The operation check device according to claim 1 , wherein the dummy resistance mechanism includes an elastic mechanism. The operation check device according to claim 1 , wherein the dummy resistance mechanism includes a conston mechanism. An operation confirmation device that supports operation confirmation of a chemical liquid injector that drives a chemical liquid syringe in which a piston member is slidably inserted into a cylinder member and injects a chemical liquid into a subject,
A dummy main body member held by the chemical liquid injector as in the cylinder member;
A dummy slide member that is slid and moved to the chemical injection device in the same manner as the piston member;
A dummy resistance mechanism that generates a movement resistance equivalent to that when the chemical solution is injected with the chemical solution syringe when the chemical solution injection device that holds the dummy main body member slides the dummy slide member ;
The dummy main body member is formed in a cylindrical hollow structure that is filled with fluid in the same manner as the cylinder member,
The dummy slide member is formed with a dummy slide head that slides and seals the inside of the dummy main body member in the same manner as the piston member.
The dummy resistance mechanism is an operation check device that causes the dummy slide head that slides to generate a fluid flow resistance as the movement resistance . The operation check apparatus according to claim 12 , further comprising a pressure detection mechanism that detects a pressure of the fluid that generates the flow resistance as the movement resistance. The operation check device according to claim 13 , wherein the pressure detection mechanism is detachably attached to the dummy main body member.

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