WO2007116863A1

WO2007116863A1 - Medicinal-liquid injection system

Info

Publication number: WO2007116863A1
Application number: PCT/JP2007/057411
Authority: WO
Inventors: Shigeru Nemoto; Masahiro Sakakibara
Original assignee: Nemoto Kyorindo Co., Ltd.
Priority date: 2006-04-05
Filing date: 2007-04-02
Publication date: 2007-10-18
Also published as: JP5063591B2; JPWO2007116863A1

Abstract

An RFID tag (230) is attached to a cylinder body (211) of a medicinal-liquid syringe (200). A medicinal-liquid injection device (100) has a body holding member (114) made of metal and holding the cylinder body (211) on its upper surface. An RFID reader (130) is placed on the lower surface of the body holding member (114). A holding recess (115) for holding the cylinder body (211) is provided in the body holding member (114), and a through-hole is formed in the holding recess (115). An antenna sheet (131) is inserted in the through-hole. One end of the antenna sheet (131) is placed on the inner surface of the holding recess (115) and the other end is faced to the RFID reader (130).

Description

Specification

Chemical injection system

Technical field

TECHNICAL FIELD [0001] The present invention relates to a chemical solution injection system for injecting a chemical solution of a chemical solution syringe into a subject with a chemical solution injection device.

Tomography) The present invention relates to a chemical injection system that injects a contrast medium into a subject whose fluoroscopic image is captured by a fluoroscopic imaging device such as a scanner.

Background art

[0002] Currently, as a fluoroscopic imaging device for imaging a fluoroscopic image of a subject, a CT scanner, an MRI (Magnetic Resonance Imaging) device, a PET (Positron Emission Tomography) device, an ultrasonic diagnostic device, a CT angiography device, an MRA (MRA) MR

Angio) equipment, etc. When using a fluoroscopic imaging device as described above, a chemical solution such as a contrast medium or physiological saline may be injected into the subject, and a chemical injection device that automatically performs this injection has also been put into practical use! .

[0003] Such a chemical solution injection device has, for example, a piston drive mechanism including a drive motor and a slider mechanism, and a chemical solution syringe is detachably attached thereto. 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 has a cylindrical cylinder body, and a conduit portion is formed at the center of the closed front end. The rear end of the cylinder body is opened, and a piston member is inserted into the inside through the opening. An annular cylinder flange is formed on the outer periphery of the rear end of the cylinder body.

[0005] Such a liquid syringe includes a prefilled type and a post-filling type. The pre-filled type is shipped with the cylinder member filled with chemicals and sealed entirely with packing material. In the post-filling type, a cylinder member is filled with a desired chemical solution by a user. In the following, in order to simplify the description, it is assumed that the chemical syringe is a prefilled type. [0006] When injecting a chemical solution of the above-described chemical solution syringe into a subject, an operator prepares a chemical solution syringe of an appropriate chemical solution, and takes out the chemical solution syringe from the packing material. When the chemical syringe is connected to the subject with an extension tube and attached to the chemical injection device, the cylinder flange is held by the flange holding member. In such a state, the chemical injection device press-fits the piston member into the cylinder member by the piston drive mechanism in response to a predetermined operation. As a result, the drug solution is injected into the subject by the drug syringe force.

[0007] 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 solution injection device, the chemical solution injection device supplies the chemical solution corresponding to the input data. Inject the subject. 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.

[0008] It should be noted that there are products that can inject physiological saline as well as a contrast medium into a subject. In that case, the operator inputs the injection of the physiological saline in conjunction with the completion of the injection of the contrast agent as desired, together with the injection speed, the total injection amount, and the like to the drug solution injector. Then, the chemical injection device automatically injects physiological saline after injecting a contrast medium into the subject according to the input data. For this reason, the contrast medium can be boosted with physiological saline to reduce the consumption of the contrast medium, and the artifact can be reduced with the physiological saline.

[0009] It is to be noted that a force chemical liquid injection device having a high viscosity contrast medium is suitable for injecting a contrast medium because a piston member can be pushed into a cylinder member of a chemical liquid syringe at a high pressure. However, in order to push the piston member into the cylinder member at a high pressure, it is necessary to hold the cylinder member firmly.

[0010] For this reason, the chemical injection device implemented by the present applicant has a pair of left and right metal flange holding members, and the flange holding member can be freely opened and closed by the metal main body holding member. I support it. The main body holding member has a holding recess formed on the upper surface, and holds the cylinder main body inserted from the upper side by the holding recess. The pair of left and right flange holding members are formed with holding slits on the inner surfaces facing each other, and hold the left and right portions of the cylinder flange of the chemical syringe inserted from above in an open state in a closed state.

[0011] It should be noted that such a chemical injection device that holds the cylinder flange with a pair of openable and closable flange holding members has been filed with various structures by the present applicant (for example, Patent Document 1). See ~ 5).

Patent Document 1: Japanese Patent Application Laid-Open No. 2004-154238

Patent Document 2: JP 2004-154239 A

Patent Document 3: JP 2004-187849

Patent Document 4: Japanese Patent Application Laid-Open No. 2004-243009

Patent Document 5: Japanese Patent Application Laid-Open No. 2004-290454

In the chemical injection device as described above, the cylinder flange of the chemical syringe can be firmly held by the metal flange holding member. Therefore, a high viscosity contrast agent is formed by pushing the piston member into the cylinder member of the chemical syringe at a high pressure. Can be successfully injected into a subject. Moreover, since the flange holding member that can be opened and closed is supported by the metal main body holding member, even if a large amount of stress acts on the chemical liquid syringe force flange holding member, for example, the main body holding member may be deformed or damaged. Don't do it.

[0012] However, in the current general drug solution syringe, a flat portion is formed on a part of the outer peripheral surface of the cylinder flange in order to prevent unnecessary rolling and the like. The flat portion is usually formed in a shape obtained by partially cutting the circular outer peripheral surface of the cylinder flange in a straight line, and is formed in parallel so as to be paired with the opposite position of the outer peripheral surface of the cylinder flange. ing. Therefore, the above-described chemical injection device is configured to hold a circular portion, which is not a flat portion of the cylinder flange, with a flange holding member. Therefore, the operator needs to hold the cylinder flange on the flange holding member at the position of the circular portion.

[0013] However, even when the flange holding member holds the cylinder flange at the position of the flat portion, it appears that the chemical syringe is appropriately held by the chemical injection device. In this case, since the area where the flange holding member holds the cylinder flange decreases, the cylinder flange may be damaged if the piston member is pushed into the cylinder member at a high pressure.

[0014] Furthermore, some chemical syringes are currently specified so that one of the pair of flat portions of the cylinder flange faces upward. In this case, the cylinder flange is held by the flange holding member at the circular portion. However, if the vertical direction of the chemical syringe is reversed, a problem occurs.

[0015] For example, the present applicant's power application 2004-110853 (WO2005Z097232A1) In the chemical solution injection system that has been requested, a pattern that has a predetermined shape when viewed from above through a cylinder member filled with a transparent chemical solution is formed on the lower surface of the cylinder member and the inner surface of the holding recess of the main body holding member. It is divided into two.

[0016] In this chemical solution injection system, the upward force of the cylinder member is visually recognized as a predetermined shape only when the chemical solution syringe filled with the chemical solution is properly attached to the chemical solution injection device. By this visual recognition, it is possible to confirm both that the chemical syringe is appropriately held and that the cylinder member is filled with the chemical solution at a time.

[0017] However, in such a chemical solution injection system, even if the cylinder flange is held by the flange holding member at the circular portion, the chemical solution syringe is appropriately held when the vertical direction of the chemical solution syringe is reversed. Neither it is confirmed that the cylinder member is filled with the chemical solution.

[0018] In the chemical injection device as described above, the chemical solution is injected into the subject from the chemical solution syringe. In order to inject the appropriate chemical solution, the operator needs to select an appropriate chemical solution syringe. is there. However, since there are products with the same or similar appearance even if the type of the chemical solution is different, there is a possibility that the operator may attach the chemical syringe of the chemical solution to the chemical injection device.

[0019] In addition, a product that is not a compatible product may be used as a chemical syringe, and a medical accident may occur due to inadequate performance such as pressure resistance. In addition, prefilled type drug syringes are discarded after a single use in order to prevent infection, but current drug injectors cannot prevent a drug syringe once used from being used again. .

[0020] Further, as described above, it is necessary to input the injection speed, the total injection amount, and the like corresponding to the chemical solution to be used and the chemical solution syringe. However, this operation is complicated and proficient, and it is difficult for the operator, and it is not appropriate to prevent the input operation of numerical values. In particular, there are products in which the concentration of the active ingredient differs by several times in current contrast agents. If this is not taken into account, several times or a fraction of the appropriate amount of contrast agent will be injected.

[0021] Similarly, depending on the imaging region and body weight of the subject, it may be necessary to input data to the chemical injection device, such as the injection rate of the chemical, which is complicated and prevents input errors. Can not do it. In particular, the applicant has filed that the contrast effect can be improved by changing the injection speed of the contrast medium (Japanese Patent Laid-Open No. 2004-113475), and such a variable pattern is input to the chemical liquid injector. It is not easy.

Disclosure of the invention

The present invention has been made in view of the above-described problems, and the flange holding member appropriately holds the chemical syringe, and automatically prevents the piston drive mechanism from being driven in this state. An object of the present invention is to provide a chemical solution injection system that can be used.

[0023] The chemical solution injection system of the present invention includes a chemical solution syringe and a chemical solution injection device. The chemical syringe includes a cylinder member having a cylinder flange formed on the outer periphery of the rear end of the cylinder body, and a piston member that is slidably inserted into the cylinder member in a backward direction. The chemical injection device pushes the piston member into the cylinder member of the chemical syringe and injects the chemical into the subject.

[0024] The chemical syringe has an RFID tag mounted on the outer peripheral surface of the cylinder body. The RFID tag has a circuit chip and a planar loop antenna connected to the circuit chip, and wirelessly transmits recording data by electromagnetic induction.

[0025] The chemical liquid injector includes a main body holding member, a flange holding member, a piston drive mechanism, an RFID reader, an operation control means, and an antenna sheet. The main body holding member is made of metal, and holds the cylinder main body inserted from above by the holding recess. The flange holding member is made of metal and supported by the main body holding member, and holds the cylinder flange inserted from the upper side. The piston drive mechanism pushes the piston member into the cylinder member held together with the cylinder flange. The RFID reader wirelessly receives the RFID tag recording data by electromagnetic induction. The operation control means controls the operation of the piston drive mechanism in response to the wireless reception of the recording data. The antenna sheet has an elongated loop antenna.

[0026] A through hole is formed in the main body holding member from the outer surface to the inner surface of the holding recess. The RFID reader is arranged at a position adjacent to the through hole on the outer surface of the holding recess. One end of the antenna sheet passed through the through hole of the holding recess is disposed on the inner surface of the holding recess, and the other end faces the RFID reader. Thus, for example, the RFID tag is parallel to one end of the antenna sheet by properly attaching the chemical syringe to the chemical injection device. It can be made to face.

[0027] The RFID tag and the antenna sheet as described above can be formed in a substantially rectangular sheet shape, for example. The antenna sheet can be formed as a structure corresponding to an R FID tag in which the circuit chip is omitted. Such RFID tags and antenna sheets are approved as communication devices of the unified standard and are mass-produced as off-the-shelf products.

[0028] In the chemical injection system of the present invention, for example, the RFID tag can be made to face the one end of the antenna sheet in parallel by appropriately attaching the chemical syringe to the chemical injection device. It is possible to easily and reliably detect whether a chemical syringe is properly attached to the chemical injection device using the existing antenna sheet.

The various means referred to in the present invention are preferably provided so as to realize their functions. For example, dedicated hardware that exhibits a predetermined function and a predetermined function are given by a computer program. The data processing device, a predetermined function implemented in the data processing device by a computer program, a combination thereof, and the like can be realized.

[0030] Further, in the various constituent elements referred to in the present invention, a plurality of constituent elements that do not need to be independent from each other are formed as one member, and one constituent element includes a plurality of members. It is possible that a component is a part of another component, a part of a component overlaps a part of another component, etc. is there.

[0031] Furthermore, in the present invention, the front-rear direction and the up-down direction are defined, but this is defined for convenience in order to briefly explain the relative relationship of the constituent elements of the present invention. It does not limit the direction of production or use when it is implemented. Further, the one end, the other end, the left end, and the right end of the antenna sheet referred to in the present invention mean a portion from the outermost edge in the longitudinal direction to an arbitrary range, such as a substantially square portion. Good.

Brief Description of Drawings

FIG. 1 is a schematic longitudinal side view of a main part showing a state in which a chemical syringe is attached to an injection head of a chemical injection device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a chemical syringe is attached to an injection head. 圆 3] It is a perspective view showing the appearance of the chemical liquid injector.

4] A perspective view showing the appearance of a CT scanner that is a fluoroscopic imaging device.

FIG. 5 is a block diagram showing a circuit structure of the chemical solution injection system.

[6] FIG. 6 is a perspective view showing an appearance of a chemical syringe.

[7] FIG. 7 is a schematic perspective view showing the appearance of the RFID tag.

[8] FIG. 8 is a schematic front view of the main part showing a state in which the chemical syringe is attached to the injection head.

[9] FIG. 9 is a block diagram showing a logical structure of the chemical liquid injector.

FIG. 10 is a flowchart showing the first half of the processing operation of the chemical liquid injector.

FIG. 11 is a flowchart showing the latter half of the processing operation of the chemical injection device.

FIG. 12 is a flowchart showing the processing operation of the CT scanner.

FIG. 13 is a perspective view showing a modification of the injection head.

[Fig.14] In the modified example of the chemical solution injection system, the chemical solution is applied to the injection head.

It is a perspective view which shows the state mounted | worn.

Explanation of symbols

100 chemical injection device

110, 170 injection head

114, 174 Body holding member

115 Holding recess

116 Piston drive mechanism

121, 173 With flange holder

130 RFID reader

131 Antenna sheet

133 Through hole

135 Ferrite sheet

140 computer units

150 Operation control means

151 Data storage means 152 Data collation means

153 Warning output means

154 Data storage means

156 Data holding means

157 Display control means

158 Injection control means

171 display panel

200 chemical syringe

210 Cylinder member

211 Cylinder body

213 Cylinder flange

220 Piston member

230 RFID tag

232 circuit chip

233 tag antenna

300 CT scanner

400 cylinder adapter

1000 chemical injection system

BEST MODE FOR CARRYING OUT THE INVENTION

[Configuration of the embodiment]

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, and a CT scanner 300 that is a fluoroscopic imaging device. As will be described later, a fluoroscopic image is taken from a subject (not shown) who injects a medical solution such as a contrast medium.

The CT scanner 300 includes a fluoroscopic imaging unit 301 and an imaging control unit 302, as shown in FIGS. The fluoroscopic imaging unit 301 and the imaging control unit 302 are wiredly connected via a communication network 303. 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 and FIG. 6, the chemical syringe 200 has 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 closed front end of the cylinder body 211.

[0037] The rear end of the cylinder body 211 of the cylinder member 210 is opened, and the piston member 220 is 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 is an annular piston formed on the outer periphery of the piston body 221. It has flange 222.

[0038] The cylinder member 210 is formed of a non-conductive and non-magnetic resin, and has a thickness of about 1.5 mm to 2.0 mm, for example. In the chemical solution injection system 1000 of this embodiment, at least a part of the chemical solution syringe 200 used is a prefilled type. The pre-filled type chemical solution syringe 200 is shipped with the cylinder member 210 filled with the chemical solution.

The RFID tag 230 is attached to the cylinder member 210 of the chemical syringe 200. The RFID tag 230 includes the name, prefilled type force refilter identification data, identification data for each individual, capacity, cylinder member 210 pressure resistance, cylinder member 210 inner diameter, and piston member 220 stroke. Various data such as, etc. are recorded.

[0040] Furthermore, when the chemical syringe 200 is of a prefilled type, the RFID tag 230 has a name, component, viscosity, expiration date, identification data such as whether it is for CT or MR, etc. Various data are also recorded. Further, when the drug solution filled in the prefilled type drug solution syringe 200 is a contrast medium, a variable pattern that changes the injection rate with time is recorded in the RFID tag 230 as necessary.

As shown in FIG. 7, the RFID tag 230 has a long and narrow resin sheet 231, and a circuit chip 232 is enclosed in the vicinity of one end thereof. In addition, the tag antenna 233 is also formed on the resin sheet 231 by a printed wiring as a planar and elongated loop antenna. It is. The tag antenna 233 is connected to the circuit chip 232.

In the RFID tag 230, for example, the surface of the resin sheet 231 is formed in white, and various information can be printed on this surface. An adhesive material (not shown) is applied to the back surface of the resin sheet 231, and the RFID tag 230 can be attached to the outer peripheral surface of the cylinder member 210 with the adhesive material.

[0043] As shown in Figs. 6 and 8, the chemical syringe 200 has a pair of flat portions 215 formed in parallel at opposite positions of the circular outer peripheral surface 214 of the cylinder flange 213. Thus, the cylinder flange 213 has a left-right symmetry and a vertically symmetrical structure.

[0044] However, this chemical syringe 200 has, for example, a sticker with a message such as "Please use this as the upper side" or "Do not use this as the upper side". By being affixed to the outer peripheral surface (not shown), it is defined that one of the pair of flat portions 215 is upward and the other is downward.

[0045] With respect to the chemical syringe 200 in which the vertical direction is regulated as described above, the RFID tag 230 has a longitudinal direction parallel to the axial direction of the cylinder member 210, and the bottom of the cylinder body 211. It is mounted on the outer peripheral surface.

As shown in FIG. 3, the drug solution injection device 100 of the present embodiment includes an injection head 110 and an injection control unit 101 that are configured separately from each other and are wire-connected by a communication cable 102. The injection head 110 drives the chemical solution syringe 200 to be attached to inject the chemical solution into the subject. The injection control unit 101 controls the operation of the injection head 110.

The injection head 110 is attached to the upper end of the caster stand 111 via the movable arm 112, and as shown in FIG. The injection head 110 has a head housing 113 as an exterior. The head housing 113 is entirely formed of a resin, but as shown in FIGS. 1 and 2, only the upper part of the front end is formed of a metal main body holding member 114.

More specifically, the main body holding member 114 is formed of a high-strength nonmagnetic metal such as an aluminum alloy, and has a semi-cylindrical shape that holds the cylinder main body 211 inserted from the upper side. The holding recess 115 is formed on the upper surface. A cylinder holding mechanism 120 is disposed at the rear end of the main body holding member 114. Cylinder holding mechanism 120 is stainless steel alloy etc. It is made of high strength metal.

This cylinder holding mechanism 120 has a pair of left and right flange holding members 121. The pair of left and right flange holding members 121 includes a fixed holding member 122 and a movable holding member 123. The fixed holding member 122 is fixed to the rear end of the main body holding member 114, and the movable holding member 123 is supported by the rear end of the main body holding member 114 so as to be opened and closed in the left-right direction. The fixed holding member 122 and the movable holding member 123 are formed with arc-shaped holding slits on the inner surface, and the cylinder flange 213 of the drug solution syringe 200 is engaged therewith.

A piston drive mechanism 116 is mounted on the rear portion of the injection head 110. The piston driving mechanism 116 holds the piston flange 222 of the chemical syringe 200 and slides it back and forth. As shown in FIG. 5, the piston drive mechanism 116 has a drive motor 117 such as an AC (Alternating Current) motor as a drive source, and the piston member 220 is slid by a ball screw mechanism (not shown) or the like. Move.

[0051] The piston drive mechanism 116 also includes a load cell 118. The load cell 118 detects the pressure that presses the piston member 220. A long and narrow metal frame (not shown) is disposed on the left and right sides of the head housing 113, and the piston drive mechanism 116 and the main body holding member 114 are connected by the metal frame.

[0052] The chemical injection device 100 according to the present embodiment includes, for example, an RFID reader 130 formed as a chip component having a reader antenna (not shown) mounted on the surface thereof. As shown in FIG. 1, the RFID reader 130 is disposed on the lower surface of the main body holding member 114 so that the reader antenna is positioned on the lower side.

Furthermore, the chemical injection device 100 of this embodiment has an antenna sheet 131. The antenna sheet 131 has a structure corresponding to the RFID tag 230 from which the circuit chip 232 is omitted. That is, the antenna sheet 131 is formed as an off-the-shelf product together with an RFID tag 230 in which a planar loop antenna is formed into a slender shape with printed wiring on a slender resin sheet. The antenna sheet 131 and the RFID tag 230 are formed in a substantially rectangular shape of 18 mm × 50 mm, for example, and include an MM tag (product name) that performs wireless communication at a frequency of 13.56 MHz.

[0054] In the chemical injection device 100 of the present embodiment, the main body holding member 114 has the holding recess 115. From the outer surface (lower surface) to the inner surface (bottom surface), a horizontally long through-hole 133 that penetrates the holding recess 115 in the thickness direction is formed. The antenna sheet 131 is passed through the through hole 133.

[0055] One end located above the through hole 133 of the antenna sheet 131 is bent backward, and is disposed on the bottom surface of the holding recess 115 via a ferrite sheet 135 that is a sheet-like high-permeability ferromagnetic material. Has been. For this reason, when the chemical syringe 200 is properly attached to the force injection head 110, which will be described in detail later, one end of the antenna sheet 131 is placed at a position where the RFID tag 230 is parallelly opposed and well electromagnetically coupled. Arranged! RU

[0056] The other end of the antenna sheet 131 located below the through hole 133 is bent forward and disposed on the lower surface of the RFID reader 130. Note that, as described above, since the reader antenna of the RFID reader 130 is located on the lower side, the reader antenna and the other end of the antenna sheet 131 face each other in parallel and are well electromagnetically coupled. .

Further, FIG. 1 is a schematic diagram, and thus the force by which the ferrite sheet 135 and the antenna sheet 131 located on the bottom surface of the holding recess 115 of the main body holding member 114 protrude is actually the ferrite sheet 135 and the antenna sheet 131. The thickness of this is negligible and does not obstruct the mounting of the chemical syringe 200 in the holding recess 115.

[0058] The injection control unit 101 connected to the injection head 110 having the structure as described above by the communication cable 102 has a built-in computer unit 140 as shown in FIG. The imaging control unit 302 is also connected by wire via a communication network 304.

[0059] As shown in FIG. 3, the injection control unit 101 includes an operation panel 103, a liquid crystal display 104 as a display device, a speaker unit 105, and the like arranged on the front surface of the main body housing 106, and is a separate controller unit. 107 is wired with connection cable 108.

[0060] As shown in FIG. 5, in the chemical injection device 100 of this embodiment, various devices such as the above-described RFID reader 130 are connected to the computer unit 140, and the computer unit 140 integrates the various devices. Control. The computer unit 140 is a so-called one-chip microcomputer, which includes a CPU (Central Processing Unit) 141, a ROM (Read Only Memory) 142, and a RAM (Random Access). Memory) 143, l / F (Interface) 144, and the like. In the computer unit 140, an appropriate computer program is mounted on the information storage medium such as the ROM 142 by using firmware or the like, and the CPU 141 executes various processing operations corresponding to the computer program.

[0061] In the chemical injection device 100 of this embodiment, the computer unit 140 operates corresponding to the computer program implemented as described above, whereby the operation control means 150 is logically operated as shown in FIG. The operation control means 150 includes a data storage means 151, a data collating means 152, a warning output means 153, a data storage means 154, a data holding means 156, a display control means 157, and an injection control means 158. , Etc. have various means logically.

[0062] The operation control means 150 corresponds to a function in which the CPU 141 executes a predetermined operation corresponding to the computer program installed in the ROM 142 or the like and the recording data wirelessly received from the R FID tag 230.

The data storage unit 151 corresponds to a storage area of the RAM 143 that the CPU 141 recognizes data, and stores predetermined confirmation conditions. The data collating means 152 collates the stored confirmation conditions with the record data received wirelessly from the RFID tag 230. The warning output means 153 outputs a confirmation warning corresponding to the collation result.

More specifically, identification data of the usable chemical syringe 200 is registered as a confirmation condition in the RAM 143, and the RFID reader 130 wirelessly receives the recording data from the RFID tag 230 of the chemical syringe 200. Then, the wirelessly received identification data of the chemical syringe 200 is collated with the identification data registered in the RAM 143.

[0065] If the wirelessly received identification data is not registered, a guidance message such as "This product is not registered as a usable syringe, please check its usability! /," Is displayed. Is displayed on the liquid crystal display 104 as a confirmation warning, and sound is output from the speaker 105.

[0066] Further, the RAM 143 holds the current date and time updated daily as a confirmation condition, and when the expiration date is received wirelessly from the RFID tag 230 of the chemical syringe 200, the expiration date and the current date and time are collated. The If the current date and time exceeds the expiration date, "This product Will expire after the expiration date. Guidance messages such as “Use a new U! Product!” Are displayed on the LCD 104 as a confirmation warning and also output by the speaker unit 105.

[0067] Furthermore, in the prefilled type liquid syringe 200, the serial number of each individual is also recorded in the RFID tag 230, so the data storage means 154 is attached to the injection head 110 and the injection operation is executed. Memorize the serial number of type 200 chemical syringe

In this case, the data collating unit 152 collates the stored manufacturing number with the manufacturing number wirelessly received from the RFID tag 230. If the matched serial numbers match, the warning output means 153 will check the guidance message such as “This prefilled syringe has been used in the past. Please use a new product! And the speaker unit 105 outputs sound.

[0069] The data holding unit 156 holds the recording data wirelessly received from the RFID tag 230.

The display control means 157 displays the stored recording data on the liquid crystal display 104. The injection control means 158 controls the operation of the piston drive mechanism 116 in accordance with the stored recording data.

[0070] More specifically, the RFID tag 230 of the chemical syringe 200 includes data such as the name, pressure resistance, and capacity of the chemical syringe 200, and the name, components, and consumption of the chemical solution filled in the chemical syringe 200. Since data such as a time limit is recorded, the recorded data is temporarily stored in the RAM 143 and displayed on the liquid crystal display 104.

[0071] When the control data of the piston drive mechanism 116 is recorded in the RFID tag 230 of the chemical syringe 200, the control data is stored in the RAM 143. The CPU 141 controls the operation of the piston drive mechanism 116 in accordance with the held control data. For example, if a variable pattern that changes the injection speed of the contrast agent over time is recorded in the RFID tag 230 of the chemical syringe 200, the CPU 141 changes the operating speed of the piston drive mechanism 116 over time corresponding to the variable pattern. Change.

[0072] Further, when the RFID tag 230 of the chemical syringe 200 and the metapressure of the chemical syringe 200 are recorded, the CPU 141 holds the RAM 141 corresponding to the detected pressure of the load cell 118. The operation of the piston drive mechanism 116 is controlled so as not to exceed the set pressure resistance. In addition, when the RFID tag 230 of the drug solution syringe 200 records the volume of the drug solution filled in the drug solution syringe, the CPU 141 controls the operation of the piston drive mechanism 116 in accordance with the volume held in the RAM 143. .

[0073] Various means of the chemical injection device 100 as described above are powers that are realized by using hardware such as the liquid crystal display 104 as necessary. The main means are resources stored in an information storage medium such as the ROM 142 and the like. This is realized by the function of the CPU 141 which is hardware corresponding to the computer program.

[0074] Such a computer program is, for example, when the recording data is received wirelessly from the RFID tag 230 by the RFID reader 130, and the confirmation condition stored in the RAM 143 or the like and the recording data received wirelessly from the RFID tag 230. In response to the comparison result, a confirmation warning is output on the display of the liquid crystal display 104, etc., the manufacturing number of the chemical syringe 200 that has been installed and the injection operation has been performed is stored in the RAM 143, etc. The stored serial number and the serial number received wirelessly from the RFID tag 230 are collated, and a confirmation warning is output on the LCD 104 according to the collation result. The recording data received wirelessly from the 230 is stored in the RAM 143 or the like, the stored recording data is displayed on the liquid crystal display 104, and the stored recording data is stored. It is stored in an information storage medium such as the RAM 143 as software for causing the CPU 141 to execute processing operations such as controlling the operation of the piston drive mechanism 116 corresponding to the data.

[0075] [Effect of the embodiment]

In the configuration as described above, when using the chemical injection system 1000 of this embodiment, as shown in FIG. 4, the injection head 110 of the chemical injection device 100 is arranged and used in the vicinity of the imaging unit 301 of the CT scanner 300. A chemical syringe 200 is prepared. Then, the operator opens the movable holding member 123 of the injection head 110 and attaches the drug solution syringe 200 to the holding recess 115 so that the cylinder flange 213 is inserted therein. After the chemical solution syringe 200 is attached, the operator closes the movable holding member 123.

[0076] As described above, the chemical syringe 200 is affixed to the cylinder body 211, such as a sticker. Since the vertical direction is specified by the operator, when attaching the chemical syringe 200, as shown in FIG. 1 and FIG. 8 (b), the operator must properly place the chemical syringe with the RFID tag 230 positioned below. 200 is attached to the chemical injection device 100.

Then, since the RFID tag 230 and one end of the antenna sheet 131 face each other in parallel and are well electromagnetically coupled, the antenna sheet 131 relays wireless communication between the RFID tag 230 and the RFID reader 130, and the RFID The tag 230 and the RFID reader 130 can communicate wirelessly satisfactorily.

Then, in the chemical injection device 100 of this embodiment, as shown in FIG. 10, the chemical syringe 200 is appropriately attached to the injection head 110 and the RFID reader 130 wirelessly receives the recorded data from the RFID tag 230. If so (step Sl), the computer unit 140 determines whether or not the received data matches the confirmation condition registered in the RAM 143 (step S2).

[0079] As the confirmation condition, identification data of the usable drug solution syringe 200 is registered. Therefore, if the identification data received wirelessly from the RFID tag 230 is not registered as a confirmation condition, `` This product is not registered as a usable syringe, please confirm that it can be used. '' Are displayed on the liquid crystal display 104 as confirmation warnings and are also output by the speaker unit 105 (step S3).

[0080] For this reason, for example, if you try to use a chemical syringe 200 that cannot be used with the chemical injection device 100 or a chemical syringe 200 that has exceeded its expiry date, a confirmation warning will be output, and various medical Mistakes can be prevented well. Further, when the identification data of the chemical syringe 200 matches the confirmation condition (step S2), the serial number received wirelessly from the RFID tag 230 and the serial number registered in the RAM 143 are collated (step S5).

[0081] Guidance messages such as “This syringe has been used in the past. Please use a new product” will be output on the LCD display 104 and the speaker unit 105 as confirmation warnings if the matched serial numbers match. Therefore (step S3), it is possible to easily and reliably prevent medical mistakes and the like in which the chemical syringe 200 that should be discarded after one use is used many times.

[0082] On the other hand, wireless reception from the RFID tag 230 of the appropriate chemical syringe 200 to the chemical injection device 100 The recorded data is, for example, “~ (Manufacturer) Contrast Syringe ~ (Name) was installed. Serial number ~, Chemical name ~, Chemical type ~, Volume ~, Pressure resistance ~, ..." Is displayed on the liquid crystal display 104 (step S6), so that the operator can easily and surely confirm various data such as the chemical syringe 200 used.

[0083] Since the RFID tag 230 stores various data to be displayed and various data not to be displayed, for example, whether or not each of the various data is to be displayed. Is set with a binary flag, and the chemical injection device 100 displays an appropriate part of the recording data force received wirelessly from the RFID tag 230.

[0084] Further, the recording data received wirelessly from the RFID tag 230 of the chemical syringe 200 to the chemical injection device 100 includes "pressure resistance", "capacity", and "variable pattern that changes the injection speed of the contrast medium over time". If the control data is included, the control data is set in the RAM 143 of the converter unit 140 (step S7). If the control data is set in the record data received wirelessly from the RFID tag 230 !, the default control data is set.

[0085] As described above, when the chemical syringe 200 attached to the chemical injection device 100 is connected to the subject by an extension tube (not shown) or the like, the operator inputs an operation start to the operation panel 103. The chemical injection device 100 that has detected this (step S8) transmits the start of work to the CT scanner 300 (step S11).

[0086] As shown in FIG. 12, the CT scanner 300 that has received the work start data from the chemical injection device 100 in this way (step T2) returns the work start to the chemical injection device 100 and executes the imaging operation. (Step Τ8). For this reason, in the chemical injection system 1000 of this embodiment, the imaging of the CT scanner 300 follows the chemical injection of the chemical injection device 100.

In the chemical injection system 1000 of this embodiment, as shown in FIGS. 10 and 12, with the chemical injection device 100 being ready as described above (steps S8 to S10), the CT scanner 300 Even when the start of imaging is input (step Tl), the chemical injection of the chemical injection device 100 follows the imaging of the CT scanner 300 (steps T4, T6˜, S9, S18˜). Therefore, in the chemical injection system 1000 of this embodiment, the contrast medium is injected at an accurate timing. A fluoroscopic image can be taken at an appropriate timing.

[0088] Then, in the chemical injection device 100 of the present embodiment, as shown in Fig. 11, when a series of operations of chemical injection is performed (from step S18), the injection start force elapsed time is measured (step S18). S19), the operation of the piston drive mechanism 116 is controlled in real time in accordance with the elapsed time and the control data wirelessly received from the RFID tag 230 (step S22).

[0089] Furthermore, in the chemical injection device 100 of the present embodiment, for example, when a variable pattern that changes the injection speed of the contrast agent over time is recorded on the RFID tag 230 of the chemical syringe 200, it corresponds to the variable pattern. Thus, the operating speed of the piston drive mechanism 116 is changed over time.

[0090] Accordingly, it is possible to maintain an optimal contrast level satisfactorily, and to reduce the physical burden on the subject by setting the injection volume of the contrast medium to the minimum necessary. However, it is not necessary to register complex variable patterns in the chemical injection device 100 in advance.For example, even with a new variable pattern corresponding to a new agent, the RFID tag 230 of the chemical syringe 200 Can be entered.

Furthermore, when the piston drive mechanism 116 is driven as described above, the stress detected by the load cell 118 is received in real time by the computer unit 140 (step S20). Then, the injection pressure of the chemical solution is calculated from the stress detected by the load cell 118 corresponding to the viscosity of the chemical solution wirelessly received from the RFID tag 230 and the inner diameter of the cylinder member 210 (step S21). The operation of the piston drive mechanism 116 is controlled in real time so as to satisfy the pressure range wirelessly received from the tag 230 (step S22).

[0092] If the injection pressure becomes an abnormal pressure, a confirmation warning is output and the injection operation is forcibly stopped (step S23), so that it is possible to prevent a medical error in which the drug solution is injected with an abnormal pressure. As described above, in order for the chemical solution injection device 100 to detect the pressure of the chemical solution, various data such as the inner diameter of the cylinder member 210 and the viscosity of the chemical solution are required in addition to the stress pressing the piston member 220 of the chemical solution syringe 200. Become. However, such various kinds of data are input to the chemical solution injector 100 by the RFID tag 230. For this reason, the chemical injection device 100 can accurately detect the injection pressure for each chemical solution for each chemical solution syringe 200 without requiring the cumbersome work of manually inputting various data into the chemical solution injection device 100. it can.

[0093] In the chemical injection system 1000 of this embodiment, if the chemical syringe 200 is improperly attached to the chemical injection device 100, the RFID tag 230 does not face one end of the antenna sheet 131 in parallel. In this case, since the RFID tag 230 and one end of the antenna sheet 131 are not electromagnetically coupled, the RFID tag 230 and the RFID reader 130 do not communicate wirelessly (step S1).

Therefore, for example, as shown in FIG. 8 (a), the injection operation is started in a state where the cylinder flange 213 is held by the flat portion 215 by the flange holding member 121, and the cylinder member 211 is destroyed. There is no such thing. Further, even if the chemical syringe 200 is mounted on the injection head 110 with the flat portion 215 of the cylinder flange 213 positioned vertically, the RFID tag 230 and the RFID reader 130 do not communicate wirelessly if the chemical syringe 200 is upside down. (Step SI) The injection operation is not started when the chemical syringe 200 is upside down.

Note that even when the chemical syringe 200 is driven by the piston drive mechanism 116 as described above, the RFID tag 230 is always detected by the RFID reader 130 (step S18). If the above detection is interrupted before completion of the injection operation (step S32) (step S18), the injection operation by the piston drive mechanism 116 is stopped (step S28).

[0096] In addition, a guidance message such as "Syringe omission detected-Please confirm the syringe installation" is displayed on the LCD 104 as a confirmation warning and voice output is output from the force unit 105. (Step S26), abnormal occurrence and injection stop are transmitted to CT scanner 300 (Steps S25, S28).

[0097] Then, when the CT scanner 300 receives an error occurrence data (step T10), the error occurrence is output as a confirmation warning on a guidance display or the like (step T16), and when an operation stop is received (step T13). ), The imaging operation is stopped (step Τ18).

[0098] Therefore, in the chemical solution injection system 1000 of this embodiment, the chemical solution syringe 200 is appropriately held, and the chemical solution injection can be automatically prevented from being executed in a state, and the chemical solution injection is performed during the chemical solution injection. Even when the syringe 200 has fallen out of its proper position force, the injection of the chemical solution can be automatically stopped. [0099] Since the mechanism for detecting appropriate attachment of the chemical syringe 200 is the RFID tag 230 and the R FID reader 130 for transferring various data from the chemical syringe 200 to the chemical injection device 100 in this manner. Therefore, it is possible to detect the appropriate mounting of the chemical syringe 200 with a simple structure without requiring a dedicated sensor mechanism or the like.

[0100] It should be noted that the chemical injection device 100 and the CT scanner 300 according to the present embodiment detect the occurrence of abnormality in the above-mentioned preparation completion state (steps S10 and T3), or detect the occurrence of abnormality during the operation execution. Even so (Step S23, Τ9), the abnormality is output (Step S26, Τ16), and the operation is stopped (Step S28, Τ18).

[0101] Furthermore, since the error occurrence is also transmitted to the other side (step S25, Τ15), the other side that has received this data (step T10, S24) also outputs the abnormality occurrence (step T16). , S26) _{0 Since} one operation stop is also transmitted to the other (steps S2 and T17), the other side that has received the data (steps T13 and S31) executes the operation stop (step S21). T18, S28).

[0102] Even when an operation stop is input to one side (step S29, Tl l), the operation stop is executed (step S28, Τ18) and also sent to the other (step S27). , Τ17) On the other side of receiving the data (steps T13 and S31), the operation is stopped (steps T18 and S28).

[0103] When the operation completion is detected on one side (steps S32, T14), the operation end is executed (step S33, Τ19), and the operation end is transmitted to the other side ( In step S34, Τ20), on the other side of receiving the data (step T12, S31), the operation stop is executed (step T18, S28).

[0104] In the chemical injection device 100 of this embodiment, when the injection operation ends normally or abnormally as described above (steps S33, S28), the identification data wirelessly received from the RFID tag 230 of the chemical syringe 200 is new. Is registered in the RAM 143 as the confirmation condition (step S36).

[0105] The chemical injection device 100 of this embodiment is equipped with the RFID reader 130 on the existing injection head 110 with minimal modifications, and this RFID reader 130 is wirelessly communicated with the RFID tag 230 of the chemical syringe 200. In order to achieve this, the existing antenna sheet 131 can be used. As a result, the productivity of the chemical injection device 100 is good. This will be described below. First, as described above, the main body support member 114 that supports the flange holding member 121 is formed of a metal such as an aluminum alloy because sufficient strength is required. Therefore, in order to place the RFID reader 130 at a position facing the RFID tag 230 of the chemical syringe 200, for example, a recess is formed in the bottom surface of the holding recess 115 of the main body support member 114, and a reader antenna is provided there. It can be assumed that the RFID reader 130 is arranged so as to be located on the upper surface (not shown).

However, in this case, the metal main body support member 114 is positioned in the vicinity of the reader antenna of the RFID reader 130, and the main body support member 114 hinders wireless communication between the RFID reader 130 and the RFID tag 230. Will be. In order to solve this problem, for example, the reader antenna force of the R FID reader 130 is also formed with a large recess so that the main body support member 114 is sufficiently separated, or the main body support member 114 is made of high-strength grease. It can be assumed to form (both not shown). However, this requires a major modification of the existing chemical injection device 100.

In the chemical injection device 100 of this embodiment, since the RFID reader 130 is arranged on the lower surface of the main body support member 114 with the reader antenna on the lower side, the reader antenna is supported on the main body depending on the thickness of the RFID reader 130. The lower surface force of the member 114 is separated, and the metal main body support member 114 can be prevented from affecting the reader antenna.

However, in this case, the RFID reader 130 is positioned below the metal main body support member 114,

Since the RFID tag 230 is disposed on the upper side of the main body support member 114, the RFID tag 230 and the RFI

It is difficult for the D reader 130 to be directly electromagnetically coupled.

Therefore, in the chemical injection device 100 of the present embodiment, one end of the antenna sheet 131 is arranged at a position facing the RFID tag 230 above the main body support member 114 and the other end is the main body support member 11.

RFID reader 13 by attaching it to the reader antenna of RFID reader 130 on the lower side of 4

0 and the RFID tag 230 can be electromagnetically coupled well.

[0111] However, the antenna sheet 131 is an off-the-shelf product that is mass-produced together with the RFID tag 230, and the modification of the main body support member 114 only forms the slit-shaped through hole 133. Productivity is good.

Furthermore, in the chemical injection device 100 of the present embodiment, the antenna sheet facing the RFID tag 230 One end force of 131 Since the ferrite sheet 135 is arranged on the surface of the main body support member 114, the electromagnetic field below the antenna sheet 131 passes through the ferrite sheet 135, and the RFID tag 230 and the antenna sheet 131 Electromagnetic coupling with the metal body support member 114 is not hindered.

[0113] Note that the tag antenna 233 of the RFID tag 230 of the present embodiment is formed as an elongated loop antenna. Therefore, if the tag antenna 233 is bent in the longitudinal direction, the communication performance is extremely lowered. However, in the chemical syringe 200 of this embodiment, since the long direction of the cylinder member 210 and the RFID tag 230 are the same, the tag antenna 233 is simply bent slightly in the short direction, and the longitudinal direction. Is not curved and the communication performance is good.

[0114] Further, the RFID tag 230 is a force whose communication performance is hindered even by liquid. As described above, the RF ID tag 230 needs to be attached to the cylinder member 210 in a state in which the longitudinal direction coincides with the cylinder member 210. It is difficult to place the RFID tag 230 at a position that is filled with the chemical solution.

[0115] Since the drug solution syringe 200 of this embodiment is formed with a sufficient thickness such as the cylinder member 210 force Sl. 5 mm to 2.0 mm, the RFID tag 230 attached to the surface of the syringe 200 is a cylinder. Wireless communication can be satisfactorily performed without being hindered by the chemical solution filled in the part 210.

[0116] [Modification of Embodiment]

The present invention is not limited to the above embodiment, and various modifications are allowed without departing from the spirit of the present invention. For example, in the above embodiment, the chemical injection device 100 in which only one chemical syringe 200 is attached to the injection head 110 is illustrated, but as shown in FIG. 13, the chemical solution in which a plurality of chemical syringes 200 are attached to the injection head 170 An injection device (not shown) can also be implemented.

[0117] Further, in the above embodiment, the recording data detected by the RFID reader 130 from the RFID tag 230 is displayed on the liquid crystal display 104 of the injection control unit 101 separate from the injection head 110. did. However, as shown in FIG. 13, it is possible to mount a display device 171 such as a liquid crystal display on the injection head 170 and display the recorded data of the RFID tag 230 there. [0118] In this case, when the chemical syringe 200 is properly attached to the injection head 170, the recorded data is displayed on the display device 171 of the injection head 170, so that the operator can properly use the chemical syringe 200. It is possible to quickly check whether it is installed and to recognize the display data intuitively.

[0119] Further, in the above embodiment, a force exemplifying that the fixed holding member 122 of the pair of left and right flange holding members 121 is separated into the left and right together with the movable holding member 123. For example, the left and right fixed holding members are integrally formed below. It is also possible that only the movable holding member 123 is separated to the left and right (not shown). Alternatively, as shown in FIG. 13, it is possible that the flange holding member is formed integrally with the main body holding member 174 only by the fixed holding member 173 that does not move.

[0120] Further, for example, a convex portion is formed on at least one of the front surface and the rear surface of the holding slit of the fixed holding member, and the convex portion is formed on a concave portion formed only on at least one lower portion of the front surface and the rear surface of the cylinder flange. It is also possible to engage (not shown). In this case, even when the flat portion of the cylinder flange is positioned up and down, the chemical syringe is not attached to the chemical injection device in the opposite state.

Furthermore, in the above embodiment, only the RFID tag 230 is attached to the lower surface of the chemical syringe 200. However, for example, the upward force is also visually recognized through the cylinder member 210 filled with a transparent chemical solution. It is also possible that the symbol having a predetermined shape is divided into the lower surface of the cylinder member 210 and the inner surface of the holding recess 115 of the main body holding member 114 (not shown). In this case, whether or not the chemical syringe is properly held can be confirmed by both the RFID reader 130 and the above-described design, and the force with which the cylinder member 210 is filled with the chemical solution can also be confirmed by the design. it can.

[0122] In the above embodiment, the RFID tag 230 is mounted on the cylinder member 210 in a state in which the longitudinal direction coincides. However, for example, the RFI D tag 230 can be mounted on the outer peripheral surface of the cylinder member 210 so as to be wound in the longitudinal direction! (Not shown)

[0123] Further, in the above embodiment, the force exemplifying that the entire cylinder member 210 is formed with a thickness that does not inhibit the electromagnetic induction of the RFID tag 230. For example, the thickness of the cylinder member If this is not sufficient, it is possible to form only the part where the RFID tag 230 is attached to a predetermined thickness, and attach the RFID tag 230 to the cylinder member via a pedestal of grease, etc. Is possible (both not shown).

[0124] Further, a ferromagnetic material such as ferrite having a high magnetic permeability is formed in a sheet shape having the same shape as that of the RFID tag 230, and the RFID tag 230 is disposed on the outer peripheral surface of the cylinder member 210 via the magnetic material. Is also possible (not shown). In this case, since the electromagnetic field on the back side of the RFID tag 230 passes through the magnetic material, the electromagnetic field can be prevented from being absorbed by the chemical solution, and the communication performance of the RFID tag 230 can be improved.

[0125] Furthermore, in the above embodiment, the upper part, which is one end of the antenna sheet 131 inserted through the through hole 133 of the main body support member 114, is bent rearward and disposed at a position facing the RFID tag 230. The lower end, which is the other end, is bent forward and is shown in close contact with the RFID reader 130.

However, the RFID reader 130 is disposed behind the through-hole 133, and the lower portion of the antenna sheet 131 can be bent rearward to be in close contact with the RFID reader 130. It is also possible that the upper part of the PC is bent forward so as to face the RFID tag 230 (both not shown).

[0127] Further, in the above embodiment, the through hole 133 is formed in the lower part of the main body holding member 114 of the chemical liquid injector 100, and the antenna sheet 131 and the RFID reader 130 are arranged. The RFID tag 230 is placed at the bottom.

However, through holes 133 are formed in the left and right parts of the main body holding member 114 and the antenna sheet 131 and the RFID reader 130 are arranged, and the corresponding left part of the cylinder member 210 is arranged. It is also possible that the RFID tag 230 is arranged on the right side or the like (not shown).

Furthermore, in the above embodiment, the ferrite sheet 135 and the antenna sheet 131 having negligible thicknesses are arranged on the bottom surface of the holding recess 115 of the main body holding member 114, but for example, the holding recess 115 One end of the ferrite sheet 135 and the antenna sheet 131 can also be disposed by forming a concave hole in the bottom surface (not shown). In this case, ferrite Even when the thickness of the sheet 135 and the antenna sheet 131 cannot be ignored, the chemical syringe 200 can be satisfactorily attached to the holding recess 115 without being obstructed by the thickness.

[0130] In the above embodiment, the upper surface of the other end of the antenna sheet 131 is illustrated as being closely attached to the lower surface of the RFID reader 130. However, as long as electromagnetic induction is performed satisfactorily, the antenna sheet 131 It is also possible for the upper surface of the end and the lower surface of the RFID reader 130 to face each other apart (not shown).

[0131] Further, in the above embodiment, for simplification of description, it is assumed that the size of the chemical syringe 200 attached to the chemical injection device 100 is one. However, in the chemical injection system implemented by the present applicant, the chemical syringe 200 has a plurality of sizes, and as shown in FIG. 14, a cylinder adapter 400 is prepared for each chemical syringe 200 of a size other than the maximum. Yes.

In such a chemical solution injection system, the chemical solution syringe 200 having the maximum size is directly attached to the chemical solution injection device 100, and the chemical solution syringe 200 having a size other than the maximum size is attached via the cylinder adapter 400. Therefore, when the cylinder adapter 400 is properly attached to the chemical injection device 100, the RFID tag 230 may be attached to the outer surface or inner surface of the cylinder adapter 400 that faces the one end of the antenna sheet 131 in parallel. Is possible.

[0133] In this case, the chemical liquid injector 100 can check whether both the cylinder adapter 400 and the chemical syringe 200 are properly attached. Then, by comparing the recorded data of the cylinder adapter 400 with the recorded data of the chemical syringe 200, it can be confirmed that the combination of the chemical syringe 200 and the cylinder adapter 400 is appropriate.

[0134] Since the RFID reader 130 for the MM tag can wirelessly communicate with a plurality of RFID tags 230, the chemical injection device 100 can use both the cylinder adapter 400 and the chemical syringe 200 with one RFID reader 130. Wireless communication with RFID tag 230.

In the chemical solution injection system as described above, the RFID tag 230 of the chemical solution syringe 200 and the antenna sheet 131 of the chemical solution injection device 100 face each other via the cylinder adapter 400. Radio between RFID tag 230 and RFID reader 130 It is preferable to form with a non-magnetic material such as rosin that does not hinder communication.

[0136] Further, in the above embodiment, since the use of the chemical syringe 200 and the like is restricted at a time, the chemical injection device 100 wirelessly receives the manufacturing number for each individual from the RFID tag 230 of the chemical syringe 200 used by the RFID reader 130. This example illustrates that a confirmation warning is output when a new serially received serial number is stored.

[0137] However, the RFID tag 230 of the chemical syringe 200 is set as a product in which data can be added, and the chemical injection device 100 records the used state in the RFID tag 230 of the chemical syringe 200 that is installed and the injection operation is executed. It is also possible to output a confirmation warning when used is received wirelessly from the RFID tag 230 of the new chemical syringe 200.

In this case, since it is not necessary to register an enormous number of manufacturing numbers in the chemical injection device 100, overflow of the RAM 143 can be prevented, and there is no need to install an unnecessarily large capacity RAM 143 or the like. Even if the stored data of the chemical injection device 100 is illegally reset, illegal repeated use of the chemical syringe 200 can be prevented.

[0139] Furthermore, in the above embodiment, chemical solution injection control data and the like are also received wirelessly from the RFID tag 230 of the chemical syringe 200 to the chemical injection device 100, and the chemical injection device 100 controls the chemical injection operation according to the control data. Exemplified only to do. However, the chemical injection device 100 may control the chemical injection operation corresponding to a combination of control data received wirelessly from the RFID tag 230 of the chemical syringe 200 and control data input from the operation panel 103 or the like. Is possible.

[0140] For example, as described above, a time-varying pattern of chemical injection is recorded in the RFID tag 230 of the chemical syringe 200, and when an imaging region by the CT scanner 300 is input to the operation panel 103 or the like, It is also possible to adjust the variable pattern corresponding to the imaging region.

[0141] Also, in the above embodiment, it is assumed that the chemical injection device 100 that has registered the serial number received wirelessly from the RFID tag 230 of the chemical syringe 200 after completing the injection operation ends various operations. However, for example, when the chemical injection device 100 that has completed the injection operation and registration of the serial number data as described above detects the removal of the chemical syringe 200 by the RFID reader 130, the piston drive mechanism 116 is moved to the initial position at the end. Can be automatically retracted Noh.

[0142] Further, when the chemical injection device 100 that completes various operations in this way and retracts the piston drive mechanism 116 to the initial position detects the attachment of the new chemical syringe 200 by the RFID reader 130, the piston member 210 It is also possible to automatically advance the piston drive mechanism 116 to a preparation position for holding the valve.

[0143] In these cases, the piston drive mechanism 116 is automatically arranged at an appropriate position by attaching / detaching the chemical syringe 200 to / from the chemical injection device 100 at an appropriate timing. The convenience of the chemical injection device 100 can be further improved.

[0144] Further, in the above embodiment, the force that the manufacturer assumes to record various data in the RFID tag 230 of the chemical syringe 200. For example, the medical syringe 200 is used in a medical site such as a hospital where the chemical syringe 200 is used. Various data can be recorded on the RFID tag 230.

[0145] In this case, since desired data can be given to the chemical syringe 200 at the medical site, for example, when filling the desired chemical liquid into the refill type chemical syringe 200, various data of the chemical solution are RFIDd. Recording with tag 230 is possible. Even in such a case, for example, as described above, it is preferable that the manufacturing number for preventing the chemical syringe 200 to be repeatedly used is recorded in advance in the RFID tag 230 in a fixed manner.

[0146] Furthermore, in the above embodiment, only the piston member 220 is pushed into the cylinder member 210 of the drug solution syringe 200 in order for the drug solution injection device 100 to inject the drug solution into the subject. However, for example, a separate drug solution pack is extended. By extracting the piston member 220 from the cylinder member 210 connected by a tube, the chemical solution injection device 100 can also fill the chemical solution syringe 200 with the chemical solution (not shown).

[0147] In the above embodiment, the CT scanner 300 is used as the fluoroscopic imaging apparatus, and the chemical injection device 100 injects the contrast medium for CT. For example, the MRI apparatus and the PET apparatus are used as the fluoroscopic imaging apparatus. It is also possible to inject a contrast medium for the same using a chemical injection device.

[0148] Furthermore, in the above embodiment, each part such as the chemical liquid injector 100 has been specifically described. Each part can be changed in various ways.For example, the drive source of the piston drive mechanism is formed by a direct current (DC) motor, ultrasonic motor, linear motor or solenoid! -Luminescence) It can also be formed with a display or plasma display (not shown).

In the above embodiment, the CPU 141 is operated corresponding to the computer program stored in the RAM 143 and the like, and various means are logically realized as various functions of the chemical solution injector 100. However, each of these various means can be formed as unique hardware, and a part can be stored in the RAM 143 as software and a part can be formed as node hardware.

Claims

The scope of the claims

[1] A cylinder flange is formed on the outer periphery of the rear end of the cylinder body, and a piston member is slidably inserted into a cylinder member. The piston member is inserted into the cylinder member of the drug syringe and the cylinder member of the drug syringe. A chemical injection device for injecting a chemical into a subject by pushing

An RFID (Radio Frequency Identification) tag that wirelessly transmits recorded data by electromagnetic induction is attached to the chemical syringe at a predetermined position on the outer peripheral surface of the cylinder body,

The chemical injection device includes a metal main body holding member provided with a holding recess for holding the cylinder main body to be inserted from the upper side, and the cylinder inserted by an upper force supported by the main body holding member. A metal flange holding member that holds the flange, a piston drive mechanism that pushes the piston member into the cylinder body held together with the cylinder flange, and an RF ID reader that wirelessly receives the recording data of the RFID tag by electromagnetic induction; And an operation control means for controlling the operation of the piston drive mechanism in response to wireless reception of the recording data, and an antenna sheet having an elongated loop antenna,

The main body holding member is formed with a through-hole penetrating from the outer surface to the inner surface of the holding recess, and the RFID reader is disposed at a position adjacent to the through-hole on the outer surface of the holding recess, and penetrates the through-hole. The antenna sheet is configured such that one end is disposed on the inner surface of the holding recess and the other end faces the RFID reader.

[2] The RFID tag is formed in a substantially rectangular sheet shape,

2. The chemical solution injection system according to claim 1, wherein the antenna sheet has a structure in which a loop antenna is formed on a substantially rectangular sheet.

[3] The RFID tag is disposed at a position below the cylinder member held by the main body holding member at a specific rotational position,

The chemical injection system according to claim 1 or 2, wherein one end of the antenna sheet is disposed on a bottom surface of the holding recess.

[4] The main body holding member is made of a nonmagnetic metal, and one end of the antenna sheet is disposed on the inner surface of the holding recess via a sheet-like magnetic body.

4. The chemical injection system according to any one of 3.

[5] The chemical injection system according to any one of [1] to [4], wherein the RFID tag is disposed on an outer peripheral surface of the cylinder body via a sheet-like magnetic body.

6. The chemical injection system according to claim 4 or 5, wherein the magnetic body is ferrite.

[7] A pattern that has a predetermined shape when an upward force is visually recognized through the cylinder member filled with a transparent chemical solution is divided into a lower surface of the cylinder member and an inner surface of the holding recess. The chemical injection system according to any one of claims 1 and 6.

[8] The flange holding member has a holding slit having a convex portion formed on at least one of the front and rear surfaces for holding the cylinder flange of the chemical syringe into which the upward force is also inserted from the front and rear.

The chemical injection system according to any one of claims 1 to 7, wherein a concave portion that engages with the convex portion at a specific rotational position is formed on at least one of a front surface and a rear surface of the cylinder flange.

[9] The operation control means permits the operation of the piston drive mechanism only when the RFID reader detects and detects the RFID tag of the chemical syringe. The chemical solution injection system described.

[10] A cylinder flange is formed on the outer periphery of the rear end of the cylinder body, and a piston member force S is slidably inserted into a cylinder member, and an RFID (Radio Frequency Identification) tag that wirelessly transmits recording data by electromagnetic induction A chemical injection device that is mounted at a predetermined position on the outer peripheral surface of the cylinder body, and is equipped with a chemical syringe, and pushes the piston member into the cylinder member to inject the chemical into a subject,

A metal main body holding member provided with a holding recess for holding the cylinder main body inserted from above;

A metal flange holding member that is supported by the main body holding member and holds the cylinder flange that is inserted into the upper cover;

The piston member is pressed against the cylinder body held together with the cylinder flange. A piston drive mechanism to be inserted;

An RFID reader that wirelessly receives the recording data of the RFID tag by electromagnetic induction; and an operation control means that controls the operation of the piston drive mechanism in response to the wireless reception of the recording data;

An antenna sheet having an elongated loop antenna,

The main body holding member is formed with a through hole penetrating from the outer surface to the inner surface of the holding recess,

The RFID reader is disposed at a position adjacent to the through hole on the outer surface of the holding recess.

The antenna sheet passed through the through hole is a chemical solution injector in which one end is disposed on the inner surface of the holding recess and the other end faces the RFID reader. The RFID tag is formed in a substantially rectangular sheet shape,

11. The chemical solution injector according to claim 10, wherein the antenna sheet has a structure in which a loop antenna is formed on a substantially rectangular sheet.