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WO2005084139A2 - Dispositif de determination de piqure - Google Patents

Dispositif de determination de piqure Download PDF

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Publication number
WO2005084139A2
WO2005084139A2 PCT/JP2005/003499 JP2005003499W WO2005084139A2 WO 2005084139 A2 WO2005084139 A2 WO 2005084139A2 JP 2005003499 W JP2005003499 W JP 2005003499W WO 2005084139 A2 WO2005084139 A2 WO 2005084139A2
Authority
WO
WIPO (PCT)
Prior art keywords
injection needle
puncture
needle
injection
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2005/003499
Other languages
English (en)
Japanese (ja)
Other versions
WO2005084139A3 (fr
WO2005084139A1 (fr
Inventor
Shigeru Nemoto
Akio Yazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nemoto Kyorindo Co Ltd
Original Assignee
Nemoto Kyorindo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nemoto Kyorindo Co Ltd filed Critical Nemoto Kyorindo Co Ltd
Priority to JP2006510689A priority Critical patent/JPWO2005084139A1/ja
Publication of WO2005084139A2 publication Critical patent/WO2005084139A2/fr
Publication of WO2005084139A1 publication Critical patent/WO2005084139A1/fr
Publication of WO2005084139A3 publication Critical patent/WO2005084139A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Definitions

  • the present invention relates to a device for determining whether an injection needle for injecting a drug solution has been properly punctured into a blood vessel near the surface of a human body, and particularly to a puncture for determining the puncture state of an injection needle connected to the drug solution injection device. It relates to a judgment device.
  • Resonance Imaging device ⁇
  • PET Positron Emission Tomography
  • ultrasonic cutting device etc.
  • Medical devices for imaging a blood vessel image of a subject include angio devices, MRA (MR Angio) devices, etc. .
  • a medical solution such as a contrast medium or a physiological saline may be injected into a subject, and a chemical injection apparatus that automatically executes the injection has been put into practical use.
  • a liquid syringe is inserted into a cylinder member so as to slide freely, and a piston member is press-fitted into the cylinder member by a syringe drive mechanism.
  • the cylinder member is filled with a drug solution, and the cylinder member is connected to a blood vessel near the surface of the human body by an extension tube and an injection needle, so that the drug solution in the drug solution syringe is pumped to the blood vessel of the human body by a drug solution injection device. Will be done.
  • Patent Document 1 USP6, 408, 204
  • Patent Document 2 USP5, 964, 703
  • Patent Document 3 USP5, 947, 910
  • Patent Document 4 USP6, 375, 624
  • Patent Document 5 USP5, 954, 668
  • Patent Document 6 USP5, 334, 141
  • Patent Document 7 USP4, 647, 281
  • Patent Document 8 USP4, 877, 034
  • the above-described leak detection device of Patent Documents 13 to 13 detects leakage of a drug solution from a change in impedance on the surface of a human body, and the leak detection device of Patent Documents 4 to 17 detects leak of a drug solution at the temperature of human body tissue.
  • the leak detecting device disclosed in Patent Document 8 detects the changing force and detects the changing force of the optical characteristics of blood when the leak of the drug solution occurs.
  • leak detection devices detect leakage of a drug solution injected into a blood vessel with an injection needle, but cannot determine whether the injection needle has been properly punctured into a blood vessel. Infusion cannot be prevented from starting when the needle is not properly punctured into the blood vessel.
  • the present invention has been made in view of the above-described problems, and has as its object to provide a puncture determination device capable of determining whether an injection needle is properly punctured in a blood vessel! Means to solve the problem
  • the puncture determination device of the present invention determines whether or not an injection needle for injecting a drug solution has properly punctured a blood vessel near the surface of a human body. It has a determination unit and a state notification unit.
  • the human electrode member is detachably mounted on the surface of the human body, and the voltage applying means applies a voltage to the human electrode member and the injection needle.
  • the characteristic detecting means detects the electrical characteristics acting on the human electrode member and the injection needle, and the state determining means determines the puncture state of the injection needle into the human body according to the change in the electrical characteristics. . Since the state notifying means notifies and outputs the determined puncturing state, it is notified whether the injection needle has been properly punctured into the blood vessel.
  • Various means referred to in the present invention may be formed so as to realize their functions! For example, it is realized as dedicated hardware for performing a predetermined function, a data processing device having the predetermined function provided by a computer program, a predetermined function realized in the data processing device by the computer program, a combination thereof, and the like. be able to
  • various means referred to in the present invention are such that a plurality of means that do not need to be individually independent are formed as one member, and one means is a part of another means. It is also possible that some of the means overlap with some of the other means.
  • the puncture determination device of the present invention electrical characteristics acting on the surface of the human body and the injection needle are detected, and the puncture state of the injection needle into the human body is determined in accordance with the change, and the puncture is performed.
  • the state notification it is possible to notify whether or not the injection needle has been properly punctured into the blood vessel, thereby preventing the start of injection of the liquid medicine in a state where the injection needle is not properly punctured into the blood vessel. can do.
  • FIG. 1 is a block diagram showing a circuit structure of a perspective imaging system according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing an appearance of a perspective imaging system.
  • FIG. 3 is a perspective view showing an appearance of a drug solution injector.
  • FIG. 4 is a perspective view showing a state in which a liquid syringe is mounted on an injection head of the liquid injector.
  • FIG. 5 is a longitudinal sectional side view showing an internal structure of an extension tube and an injection needle.
  • FIG. 6 is a schematic diagram showing a state where an injection needle is punctured into a human body.
  • FIG. 7 is a schematic diagram showing a state where an injection needle is punctured into a human body.
  • FIG. 8 is a flowchart showing a part of the processing operation of the liquid injector.
  • FIG. 9 is a flowchart showing a part of the processing operation of the liquid injector.
  • FIG. 10 is a flowchart showing a processing operation of the CT scanner.
  • the fluoroscopic imaging system 1000 includes a chemical injection device 100 and a CT scanner 200 as a fluoroscopic imaging device. 0 is connected by wire.
  • the chemical injection device 100 has an injection control unit 101 and an injection head 110 formed separately, and these are connected by a communication cable 102.
  • the injection head 110 is mounted on the upper end of the caster stand 11 by a movable arm 12, and as shown in FIG. 4, a concave portion 112 is formed on the upper surface of the head body 111 as a syringe holding mechanism.
  • Chemical solution syringe 300 has cylinder member 310 and piston member 320, and piston member 320 is slidably inserted into cylinder member 310.
  • the cylinder member 310 and the piston member 320 each have a cylinder flange 311 and a piston flange 321 formed around the distal end, and a closed end of the cylinder member 310 has a conduit portion 312 formed. Yes.
  • the contrast agent corresponding to the CT scanner 200 is filled in the drug syringe 300 as a drug solution, and when the drug injector 100 injects a contrast agent from the drug syringe 300 into the subject. Then, the CT scanner 200 captures a fluoroscopic image from the subject.
  • a syringe holding mechanism 113 that can be opened and closed is formed in front of the concave portion 112 of the injection head 110, and the syringe holding mechanism 113 is connected to the cylinder flange of the liquid syringe 300. Holds 311 detachably.
  • a syringe driving mechanism 114 is disposed behind the concave portion 112 of the injection head 110, and the syringe driving mechanism 114 holds and slides the piston member 320 of the chemical syringe 300 held in the concave portion 112.
  • the syringe drive mechanism 114 has an ultrasonic motor 121 as a drive source, and slides a piston member 320 by a screw mechanism (not shown) or the like.
  • the injection control unit 101 has an operation panel 103, a liquid crystal display 104, a speaker unit 105, and the like mounted on an outer surface of the unit main body 106, and is formed separately. Controller unit 107 is connected by communication cable 108.
  • the injection control unit 101 has a built-in computer cut 120 functioning as an injection control means.
  • the computer unit 120 has an operation panel 103, a liquid crystal display 104, a speaker unit 105, It is connected to each part of the sound wave motor 121 and the like.
  • the computer unit 120 is formed as a so-called one-chip microcomputer, and includes a CPU (Central Processing Unit (Central processing unit (Central processing unit (CPU)
  • ROM Read Only Memory
  • RAM Random Access Memory
  • communication lZF Interface
  • a puncture determination unit 130 as a puncture determination device is also connected to the computer unit 120, and as shown in FIG.
  • the Z-needle jacks 131 and 132 are formed at the tip of the injection head 110.
  • a connection plug 141 of a human electrode member 140 is detachably connected to the human jack 131, and a connection plug 151 of an extension tube 150 is detachably connected to the needle jack 132.
  • the human electrode member 140 includes a connection plug 141, an extension cord 142, and an adhesive pad 143, and the connection plug 141 and the adhesive pad 143 are connected by the extension cord 142.
  • the adhesive pad 143 is detachably attached to the surface of the human body 400 and is electrically connected to the surface of the human body 400 attached.
  • the extension tube 150 has a flexible and elongated tube member 152 as shown in FIGS. 4 and 5, and the distal end portion and the distal end portion of the tube member 152 are connected to the syringe connector 153 with one end.
  • the dollar connectors 154 are individually formed.
  • the syringe connector 153 is detachably connected to the conduit portion 312 of the drug solution syringe 300, and the injection connector 160 is detachably connected to the needle connector 154.
  • the needle connector 154 has a needle electrode member 156 formed of a metal such as stainless steel or titanium that does not corrode.
  • the needle electrode member 156 is an insulating connector. It is built into the cover 157.
  • a voltage conducting wire 158 is connected to the needle electrode member 156, and the voltage conducting wire 158 is inserted through the hollow inside of the tube member 152.
  • the side force of the syringe connector 153 is also drawn out, and a connection plug 151 is connected to the end.
  • the injection needle 160 has a hollow and sharp metal needle main body 161, and a concave portion on the outer peripheral surface of an intermediate portion of the needle main body 161 is covered with a fluorine resin 162. For this reason, in the injection needle 160, the distal end portion and the distal end portion are electrically connected, but the outer peripheral surface of the intermediate portion is insulated.
  • connection plug 141 of the human electrode member 140 when the connection plug 141 of the human electrode member 140 is connected to the human jack 131 and the adhesive pad 143 is attached to the surface of the human body 400, Is conducted to puncturing determination unit 130. Further, when the connection plug 151 of the extension tube 150 is connected to the needle jack 132, the injection needle 160 is attached to the needle connector 154, and the injection needle 160 is punctured into the human body 400, the tip of the injection needle 160 is positioned. The portion of the human body 400 is conducted to the puncture determination unit 130.
  • the puncture determination unit 130 includes a circuit for generating a predetermined voltage, a circuit for detecting a voltage, and the like, and functions as a voltage application unit, a characteristic detection unit, a state determination unit, and the like. Toes In other words, the force puncture determination circuit 130, which will be described in detail later, applies a predetermined voltage to the human electrode member 140 and the injection needle 160, and generates electrical characteristics acting on the human electrode member 140 and the injection needle 160. The voltage is detected, and the puncture state of the injection needle 160 into the human body 400 is determined in accordance with the change in the voltage.
  • the computer unit 120 of the drug solution injector 100 of the present embodiment has an information storage medium such as the ROM 122 in which a suitable computer program is implemented by firmware or the like, and the CPU 121 corresponds to the computer program. Perform processing operations.
  • the chemical liquid injector 100 of the present embodiment logically uses various means such as a state notification unit and an injection control unit as various functions. Have.
  • the CT scanner 200 of the present embodiment logically performs various means such as a result receiving unit and an imaging control unit as various functions. Have.
  • the puncture state determined by the puncture determination unit 130 is determined by the computer unit 120 by displaying an image on the liquid crystal display 104 and outputting sound from the speaker unit 105. Information is output, and the computer unit 120 cannot operate the syringe drive mechanism 114 unless the puncture state determined by the puncture determination unit 130 determines that the tip of the injection needle 160 is located inside the blood vessel 401. Control.
  • a part other than the blood vessel 401 of the human body 400 is referred to as a muscle part 402.
  • tissue skin and adipose tissue are included.
  • the CPU 211 receives the puncture state determination result from the liquid injector 100 by the puncture determination unit 130 via the communication IZF 217, and the tip of the injection needle is changed according to the puncture state.
  • the CPU 211 controls the fluoroscopic imaging unit 201 to be inoperable except when it is determined that the fluoroscopic imaging unit 201 is located inside the camera.
  • the computer program of such a liquid injector 100 includes, for example, notification of the puncture state determined by the puncture determination unit 130 by an image display on the liquid crystal display 104 and a sound output from the speaker unit 105.
  • the syringe drive mechanism 114 is controlled to be inoperable except when it is determined that the tip of the injection needle 160 is located inside the blood vessel 401 based on the puncture state determined by the puncture determination unit 130.
  • the computer program of the CT scanner 200 is, for example, to input data of the puncture state determination by the puncture determination unit 130 from the drug solution injector 100 through the communication IZF 217, and to determine whether the tip of the injection needle is
  • An information storage medium such as a RAM 213 is used as software for causing the CPU 211 or the like to execute a processing operation such as controlling the fluoroscopic imaging unit 201 to be inoperable except when it is determined that the fluoroscopic imaging unit 201 is located inside the 401. Stored in the body.
  • a drug solution injector 100 is arranged near a fluoroscopic imaging unit 201 of a CT scanner 200, and a drug solution syringe 300, an extension tube 150, an injection needle 160, and a human electrode member 140 are prepared. .
  • the extension tube 150 and the injection needle 160 are connected to the drug solution syringe 300, and the drug solution syringe 300 is loaded into the injection head 110 of the drug solution injection device 100.
  • the chemical syringe 300 is inserted into the concave portion 114 of the injection head 110 from above, the cylinder flange 311 is held by the syringe holding mechanism 113, and the piston flange 321 is held by the syringe driving mechanism 114.
  • connection plug 151 of the extension tube 150 is connected to the needle jack 132 of the injection head 110, and the connection plug 141 of the human electrode member 140 is connected to the human jack 131. Then, a subject (not shown) is placed in the fluoroscopic imaging unit 201, and, for example, the adhesive pad 143 of the human electrode member 140 is attached to the upper arm. [0040] In this state, when the operator first performs an input operation to the liquid injector 100 using the liquid crystal display 104 or the operation panel 103, as shown in FIG. (Step S2), the work start is transmitted to the CT scanner 200 as data (Step S4).
  • the CT scanner 200 that has received the data on the start of the work from the liquid injector 100 (step T2) returns the data on the start of the work to the liquid injector 100 (step # 4).
  • the chemical solution injection device 100 receives data before the predetermined time has passed to return the data of the operation start (steps S6 and S7), the chemical solution injection device 100 shifts to the operation of determining the puncture state of the injection needle 160 (step S8-). ).
  • the CT scanner 200 that detects this operation (Step Tl) also sends the data to the chemical injection device 100 to inform the chemical injection device 100 of the start of the operation. Send it (step # 4).
  • the chemical injection device 100 Upon receiving the data on the start of the work, the chemical injection device 100 returns the data on the start of the work to the CT scanner 200 (step S5), and shifts to the work of determining the puncture state of the injection needle 160 (step S5). S8—).
  • the liquid injector 100 that has started the determination of the puncture state as described above detects, for example, the puncture determination unit 130 by applying a predetermined voltage to the injection needle 160 with the human electrode member 140 being grounded (step). S8), the detected voltage is compared with a predetermined reference voltage (step S9).
  • step S9 non-puncture is determined by puncture determination unit 130 in chemical injector 100 (step S9).
  • the non-puncture determined in this way is output to the operator by displaying a message such as “the needle is not punctured by the subject” on the liquid crystal display 104 (step S11), and the communication IZF 124 Is transmitted to CT scanner 200 (step S12).
  • the puncture state of the received data is output to the operator by displaying a message such as “the needle is not punctured by the subject” by the display unit 216. Therefore (Steps T7 and T8), for example, even if one worker is located near one of the drug injector 100 and the CT scanner 200, the puncturing state is notified to the worker and output, and Even when one of the workers is individually located in the vicinity of the liquid injector 100 and the CT scanner 200, the puncturing state is reported to both of them.
  • Step S14 the detection voltage force of the muscle puncture determined in this way is subtracted from the predetermined voltage to calculate a determination voltage (step S14), and this determination voltage is set as data as a criterion for vascular puncture. (Step S15).
  • voltage application and detection are performed by puncturing determination unit 130 (step S16), and the detected voltage is compared with the determination voltage (step S17).
  • Step S18 when the detected voltage is maintained higher than the determination voltage, the determination of muscle puncture is maintained (step S18), and when the detected voltage changes to a lower voltage than the determination voltage, blood vessel puncture is determined.
  • Step S21 That is, as shown in FIG. 6 (c), when the distal end portion of the injection needle 160 is punctured into the blood vessel 401 of the human body 400, the conduction path from the injection needle 160 to the human electrode member 140 is connected to the muscle region 402 and the blood vessel. Formed by 401 and blood. In this case, since the electrical resistance of the blood is lower than that of the muscle region 402, the electrical resistance of the conduction path is dominated by the blood, and the voltage applied to the injection needle 160 decreases.
  • the liquid crystal display 104 indicates that "the needle has punctured the muscle. It has not reached the blood vessel.”
  • the operator is notified by a message display (step S19), and the data is transmitted from the communication IZ F124 to the CT scanner 200 (step S20).
  • the received puncturing state is displayed and output on display unit 216 with a similar message (steps T7, T8).
  • a blood vessel puncture is determined (step S21)
  • a message such as "a needle has been punctured into a blood vessel, a drug solution is being injected” is displayed on the liquid crystal display 104 by the liquid crystal display 104.
  • the notification is output to the operator on the display (Step S22), and the data is transmitted to the communication IZF124 CT scanner 200 (Step S23).
  • the computer unit 120 that has obtained the blood vessel puncture data from the puncture determination unit 130 starts driving the ultrasonic motor 121 in accordance with the setting data input to the operation panel 103 and the like. Then, the injection of the drug solution from the drug syringe 300 into the blood vessel 401 of the subject is automatically executed (step S24). On the other hand, in the CT scanner 200, the received blood vessel puncture is displayed and output on the display unit 216 with a similar message (steps T7 and T8), and the image capturing is automatically started in response to the blood vessel puncture data reception. (Steps ⁇ 9, ⁇ 10).
  • the injection of the drug solution by the drug solution injector 100 and the imaging of the image by the CT scanner 200 are started until the injection needle 160 is properly punctured into the blood vessel 401 of the subject.
  • the infusion needle 160 that pierces the blood vessel 401 is appropriately punctured, the infusion of the medicinal solution of the medicinal solution injecting device 100 and the imaging of the CT scanner 200 are automatically started.
  • the liquid injector 100 performs liquid injection. While the puncture state is being determined (steps S24 to S26), and if the puncture is determined (steps S26 and S21), the notification output and data transmission are also continued (steps S22 and S23). Then, the injection of the chemical is continued (step S24).
  • the muscle puncture is determined by the detected low pressure being higher than the judgment low pressure (steps S26 and S38).
  • the computer cut 120 that has acquired the muscle puncture data from the puncture determination unit 130 forcibly stops the driving of the ultrasonic motor 121, so that the liquid syringe 300 force is applied to the muscle part 402 of the subject. Improper chemical injection is automatically forcibly stopped (step S39).
  • a warning message such as "The needle has lost blood vessel strength. Please check” is displayed and output on the liquid crystal display 104 and sound output from the speaker unit 105. The operator near the chemical injection device 100 is notified promptly and reliably.
  • the CT scanner 200 uses the CT scanner 200 as shown in FIG.
  • the data is received (Steps T10 and T11)
  • a similar warning message is displayed and output on the display unit 216 (Step T20), and the imaging operation of the CT scanner 200 is automatically forcibly stopped (Step T21).
  • the drug injector 100 falls off from the blood vessel 401 during the injection of the drug solution by the drug injector 100 and the imaging of the image by the C ⁇ scanner 200, the drug injector The injection of 100 chemicals and the imaging of the CT scanner 200 are automatically forcibly stopped, and a confirmation warning is automatically issued from both the chemical injector 100 and the CT scanner 200.
  • the chemical injector 100 and the CT scanner 200 monitor various states of themselves using various sensors. (Step S28, ⁇ 13), the confirmation warning is notified (Step S35, ⁇ 20), Inject body Z imaging operation is stopped (steps S36, T21).
  • step S37, # 22 since the operation stop of its own is transmitted to the other side (step S37, # 22), even if the chemical injection apparatus 100 and the CT scanner 200 receive the data of the operation stop on the other side as well (step T14, (S27), a confirmation warning is issued (steps S35, T20), and the operation is stopped (steps S36, # 21).
  • Step S31 and T17 when the liquid injector 100 and the CT scanner 200 detect the completion of their own operations (Steps S31 and T17), the operation completion transmits data to the other (Steps S32 and # 18), and their own operations are performed. Is completed (step S33, # 19).
  • the other force also receives the data indicating that the operation has been completed (steps T16 and S30), it ends its own operation (steps S33 and T19).
  • the puncture state of the injection needle 160 is determined by the puncture determination unit 130 as described above, and the determined puncture state is determined by the operator using the display output of the liquid crystal display 104 or the like. Will be notified. Therefore, the operator can easily and surely check the puncture state of the injection needle 160, and can easily and surely puncture the injection needle 160 into the blood vessel 401.
  • the chemical solution injection device 100 of the present embodiment also does not start the chemical solution injection when it is not determined that the distal end portion of the injection needle 160 is properly punctured into the blood vessel 401, and Ensure that the injection needle 160 is properly punctured into the blood vessel 401, and that the injection of the medicinal solution is started in this state. Can be prevented automatically.
  • the injection needle 160 is not properly punctured into the blood vessel 401.
  • the injection of the drug solution of the drug solution injector 100 and the CT scanner 200 Since the imaging is started, the injection of the chemical solution and the imaging can be automatically started quickly and accurately without requiring complicated operations.
  • the puncturing state of the injection needle 160 is constantly monitored even when the liquid medicine injection and the image capturing are being performed as described above, and it is determined that the distal end portion of the injection needle 160 has dropped from the blood vessel 401. Then, the injection of the drug solution and the imaging of the image are stopped, so that the injection of the drug solution and the imaging of the image in a state where the injection needle 160 is dropped from the blood vessel 401 can be reliably and automatically prevented. Furthermore, if the drop of the injection needle 160 is determined during the injection of the chemical solution as described above, a warning is also output for confirming the power of both the chemical injection device 100 and the CT scanner 200, so that the operator is promptly notified. It is possible to quickly and surely recognize the occurrence of an abnormality and deal with it.
  • the fluoroscopic imaging unit 201 of the CT scanner 200 is a force that moves around the subject. As described above, when the injection needle 160 falls off the blood vessel 401, the operation of the CT scanner 200 is stopped. The operation of checking the injection needle 160 can be prevented from being obstructed by the movable fluoroscopic imaging unit 201.
  • the liquid injector 100 of the present embodiment determines the puncture state of the injection needle 160 by utilizing the difference in electrical resistance between the muscular part 402 and the inside of the blood vessel 401, and thus has a simple structure and is favorable. Puncture state can be determined.
  • the detection voltage for muscle puncture is set as a judgment voltage obtained by subtracting a predetermined voltage, and the judgment voltage is compared with the detection voltage. Since vascular puncture is determined, vascular puncture can be satisfactorily determined regardless of individual differences.
  • the tip portion of the injection needle 160 is located. Site can be satisfactorily determined. Further, since the outer peripheral surface of the intermediate portion of the injection needle 160 is covered with the fluorine resin 162, the outer peripheral surface of the intermediate portion can be reliably insulated and the puncture of the injection needle 160 can be performed smoothly. .
  • the distal end portion and the distal end portion of the injection needle 160 are electrically connected, and a needle electrode member 156 is formed at the distal end portion of the extension tube 150 to which the distal end portion is attached. Since the voltage conduction wiring 158 connected to the electrode member 156 is detachably connected to the puncture determination unit 130, the distal end portion of the injection needle 160 and the puncture determination unit 130 can be electrically connected with a simple structure.
  • the extension tube 150 and the voltage conducting wiring 156 are formed integrally with a simple structure, and handling is easy. is there.
  • the needle jack 132 of the puncture judging unit 130 is formed at the tip of the injection head 110 to which the liquid syringe 300 is attached, and the partial force of the end of the extension tube 150 also conducts the voltage laterally. Since the end portion of the wiring 156 is drawn out, attaching the extension tube 150 to the chemical syringe 300 and connecting the voltage conduction wiring 156 to the puncture determination unit 130 can be performed intuitively and easily.
  • the present invention is not limited to the above-described embodiment, and allows various modifications without departing from the gist thereof.
  • the mechanism for determining and reporting the puncture state of the injection needle 160 has been exemplified as being integrally mounted on the drug solution injector 100, but a puncture determination device having such a function is referred to as a drug injector. Can also be formed independently (not shown).
  • the puncture determination device can execute only the determination and notification of the puncture state. Further, the determination result is transmitted to the chemical injection device by wire or wirelessly, and the puncture state is transmitted to the chemical injection device. It is preferable to execute operation control or the like of chemical liquid injection corresponding to the above. Conversely, in the above embodiment, the liquid injector 100 responds to the puncture state determination result. Although the operation control of the liquid injection is described as an example, it is also possible to execute only the notification of the puncture state determination result and not to reflect the operation control of the liquid injection.
  • the liquid injector 100 automatically starts the liquid injection when the blood vessel puncture is determined. However, for example, the liquid injection is invalidated until the blood vessel puncture is determined. On the other hand, in the state where the blood vessel puncture is determined, it is also possible to execute the injection of the drug solution in response to the manual operation.
  • the CT scanner 200 exemplifies the operation control of the image capturing corresponding to the determination result of the puncturing state, and the chemical liquid injector 100 and the CT scanner 200 synchronize various operations. It is also possible not to execute these, or to execute only a part and not a part.
  • a force exemplifying that all of the start, stop, and end of the injection of the drug solution and the imaging of the image are simultaneously synchronized.
  • the image capturing is continued even after the injection of the agent is completed. Therefore, it is possible to link the end of the chemical injection to the end of the imaging with the end of the imaging, and the end of the imaging can not be linked to the end of the injection of the chemical. It is also possible to link the start of image capture with the camera.
  • the voltage conduction wiring 158 is illustrated as being inserted into the hollow interior of the extension tube 150.
  • the voltage conduction wiring is spirally wound around the outer peripheral surface of the extension tube. (Not shown), and the voltage conducting wiring may be formed completely separately from the extension tube (not shown).
  • a clip-like needle electrode member or the like is formed at the tip of the voltage conducting wiring (not shown), and It is preferable that the needle electrode member is detachably attached to the conductive end portion of the injection needle 160.
  • the detection of the voltage value as the electrical characteristic in order to determine the puncture state of the injection needle 160 into the human body 400 has been described as an example. It is also possible to detect the value.
  • the liquid injector 100 injects only one liquid from a single liquid syringe 300 into the subject by one syringe driving mechanism 114.
  • a plurality of syringe driving mechanisms 114 Accordingly, a liquid injector (not shown) for injecting a plurality of liquid medicines from a plurality of liquid syringes 300 can be implemented.
  • the CT scanner 200 is exemplified as the fluoroscopic imaging device interlocked with the liquid injector 100.
  • a fluoroscopic imaging device is, for example, an MRI device, a PET device, a CT angio device, an MRA An apparatus, an ultrasonic diagnostic apparatus, and the like are also possible.
  • the CT scanner 200 uses X-rays harmful to image capturing as described above, it is useful to automatically prevent unnecessary image capturing operations.
  • the CPUs 121 and 211 function according to the computer programs stored in the ROMs 122 and 212 and the like, so that various means are logically implemented as various functions of the chemical injector 100 and the CT scanner 200. It is illustrated that it is realized in a practical manner. However, it is also possible to form each of these various means as unique hardware. Some of the means may be stored as software in the ROMs 122 and 212 and some may be formed as hardware. It is.

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  • Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

Une tension est appliquée à un organe d'électrode pour humain (14) monté à la surface d'un corps humain et une aiguille d'injection (160) effectuant une piqûre dans le corps humain et la caractéristique électrique du fonctionnement de la tension est détectée. En fonction de la modification de la caractéristique électrique, l'état de piqûre de l'aiguille d'injection (160) dans le vaisseau sanguin est déterminé et l'état de piqûre déterminé est rapporté/émis en sortie. Ainsi, il est possible de fournir une unité de détermination de piqûre capable de rapporter si l'aiguille d'injection a effectué une piqûre appropriée dans le vaisseau sanguin.
PCT/JP2005/003499 2004-03-03 2005-03-02 Dispositif de determination de piqure Ceased WO2005084139A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006510689A JPWO2005084139A1 (ja) 2004-03-03 2005-03-02 穿刺判定装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-059035 2004-03-03
JP2004059035 2004-03-03

Publications (3)

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WO2005084139A2 true WO2005084139A2 (fr) 2005-09-15
WO2005084139A1 WO2005084139A1 (fr) 2005-09-15
WO2005084139A3 WO2005084139A3 (fr) 2005-11-10

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009530000A (ja) * 2006-03-20 2009-08-27 ノボ・ノルデイスク・エー／エス 注射針の位置決定
JP2010501300A (ja) * 2006-09-02 2010-01-21 フレセニウス メディカル ケア ドイチュランド ゲーエムベーハー 血管アクセスを監視するための装置及び方法、並びに血管アクセスを形成するための装置
JP2010502323A (ja) * 2006-09-08 2010-01-28 フレセニウス・メディカル・ケア・ドイチュラント・ゲーエムベーハー 患者へのアクセス、特に体外血管治療における血管アクセスを監視するための装置及び方法
JP2013037088A (ja) * 2011-08-05 2013-02-21 Sakamoto Moderu:Kk 血管注射シミュレータ
JP2014004249A (ja) * 2012-06-26 2014-01-16 Unique Medical Co Ltd 注射針および電極針
EP2868337A1 (fr) * 2013-10-17 2015-05-06 Seiko Epson Corporation Appareil de transport de liquide, appareil d'infusion de fluide et procédé de détermination de panne pour le tuyau de transport
US20190385485A1 (en) * 2018-06-15 2019-12-19 Nancy Walker Intravenous injection practice assembly

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009530000A (ja) * 2006-03-20 2009-08-27 ノボ・ノルデイスク・エー／エス 注射針の位置決定
US9008764B2 (en) 2006-03-20 2015-04-14 Novo Nordisk A/S Determination of position of injection needle
JP2010501300A (ja) * 2006-09-02 2010-01-21 フレセニウス メディカル ケア ドイチュランド ゲーエムベーハー 血管アクセスを監視するための装置及び方法、並びに血管アクセスを形成するための装置
JP2010502323A (ja) * 2006-09-08 2010-01-28 フレセニウス・メディカル・ケア・ドイチュラント・ゲーエムベーハー 患者へのアクセス、特に体外血管治療における血管アクセスを監視するための装置及び方法
JP2013037088A (ja) * 2011-08-05 2013-02-21 Sakamoto Moderu:Kk 血管注射シミュレータ
JP2014004249A (ja) * 2012-06-26 2014-01-16 Unique Medical Co Ltd 注射針および電極針
EP2868337A1 (fr) * 2013-10-17 2015-05-06 Seiko Epson Corporation Appareil de transport de liquide, appareil d'infusion de fluide et procédé de détermination de panne pour le tuyau de transport
US20190385485A1 (en) * 2018-06-15 2019-12-19 Nancy Walker Intravenous injection practice assembly

Also Published As

Publication number Publication date
WO2005084139A3 (fr) 2005-11-10
JPWO2005084139A1 (ja) 2007-11-29

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