Chemical liquid injection system

• US 7,828,776 B2
• Filed: 04/10/2006
• Issued: 11/09/2010
• Est. Priority Date: 04/11/2005
• Status: Active Grant

• Current Assignee: Nemoto Kyorindo Company Limited
• Original Assignee: Nemoto Kyorindo Company Limited
• Inventors: Nemoto, Shigeru, Tano, Nobuhisa
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): Eisenberg; Rebecca E
• Application Number:
  US11/911,139
• Publication Number:
  US 20090018494A1
• Time in Patent Office: 1,674 Days
• Field of Search: 604 65- 69, 604151-153, 604/189
• US Class Current: 604/189
• CPC Class Codes: A61B 6/481 involving the use of contrast agents
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/6054 Magnetic identification systems
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/1456 with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407
• CPC Class Codes: A61M 5/16854 by monitoring line pressure
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 20/17 delivered via infusion or injection
• CPC Class Codes: G16H 30/20 for handling medical images, e.g. DICOM, HL7 or PACS

Abstract

The present invention provides a chemical liquid injection system in which a chemical liquid injector can detect whether or not the injection of a liquid from a liquid syringe into a patient is inappropriate for a personal reason such as the development of a side effect although the liquid is of an appropriate type for the injection system, and the chemical liquid injector can issue an alarm to notify the inappropriate injection. Chemical liquid injector 100 acquires a product ID of the liquid recorded on liquid chip 214 of liquid syringe 200 and an inappropriate ID recorded in a electric chart to output a notification when the product ID matches the inappropriate ID.

Claims

1. A chemical liquid injection system at least comprising:

a liquid syringe including a cylinder member filled with a liquid and a piston member slidably inserted into the cylinder member; and

a chemical liquid injector for injecting the liquid into a patient by relatively moving the cylinder member and the piston member of the liquid syringe replaceably mounted thereon, using a liquid injection mechanism,

wherein the liquid syringe has data storing means on which liquid-identification data for the filled liquid and an injection pattern for varying the injection rate with time are recorded, and the chemical injector further comprises operation control means configured to control the liquid injection mechanism by changing the operation rate of the liquid injection mechanism with time in accordance with the injection pattern,

wherein the chemical liquid injector includes;

liquid data acquiring means for acquiring the data from the data storing means;

patient chart data acquiring means for acquiring data on contra-indicated liquid from an external electronic chart, wherein at least identification data for the contra-indicated liquid for injection are registered as the data on contra-indicated liquid in the electronic chart for each of the patients;

data comparing means for comparing the acquired liquid-identification data and the acquired data on contra-indicated liquid; and

alarm notifying means for notifying an alarm when the liquid-identification data matches the data on contra-indicated liquid.

2. The chemical liquid injection system according to claim 1, wherein the liquid-identification data and the data on contra-indicated liquid include data of a product ID, and the chemical liquid injector further comprise:

input operation means for receiving an input operation indicating inappropriateness of injection during the operation of the liquid injection mechanism; and

data registering means for registering the acquired product ID as inappropriateness ID in the electronic chart when the input operation indicating inappropriateness of injection is performed.

3. The chemical liquid injection system according to claim 1, wherein the operation control means is further configured to control the liquid injection mechanism to be inoperative when the data comparing means detects the matching.

4. The chemical liquid injection system according to claim 3, wherein the chemical liquid injector includes an injection control unit on which at least the operation control means is mounted, and an injection execution head formed as a separate component from the injection control unit, at least the liquid injection mechanism, the liquid data acquiring means, and the alarm notifying means being mounted on the injection execution head.

5. The chemical liquid injection system according to claim 3, wherein the liquid data acquiring means is placed at a position to detect the data storing means of the liquid syringe mounted on the chemical liquid injector, and

the operation control means controls the liquid injection mechanism to be operative only while the liquid data acquiring means detects the data storing means.

6. The chemical liquid injection system according to claim 5, wherein the operation control means returns the liquid injection mechanism to an initial position after the completion of an injection operation is detected and then the detection of the data storing means by the liquid data acquiring means is ended.

7. The chemical liquid injection system according to claim 3, wherein the data storing means which comprises an RFID (Radio Frequency Identification) chip is put on the liquid syringe, and

the chemical liquid injector includes the liquid data acquiring means which comprises an RFID reader.

8. The chemical liquid injection system according to claim 7, wherein the electronic chart which comprises an RFID chip is provided for each of the patients, and

the patient chart data acquiring means of the chemical liquid injector acquires data from the electronic chart with the liquid data acquiring means.

9. The chemical liquid injection system according to claim 1, wherein the electronic chart which comprises an RFID chip is provided for each of the patients, and

the chemical liquid injector includes the patient chart data acquiring means which comprises an RFID reader.

10. The chemical liquid injection system according to claim 1, wherein the liquid-identification data and the data on contra-indicated liquid each include at least data selected from the group consisting of a product ID, a contained ingredient, and a chemical classification.

11. The chemical liquid injection system according to claim 1, wherein

the liquid-identification data recorded on the data storing means includes data of a product ID,

at least data of a contained ingredient of the contra-indicated liquid for injection being registered as the data on contra-indicated liquid in the electric chart,

the chemical liquid injector further comprises data retrieving means for retrieving a contained ingredient as the liquid-identification data from an external liquid database with the acquired product ID, at least the contained ingredient being registered in the liquid database for each of the product IDs, and

the comparing means compares the liquid-identification data acquired by retrieving with the data retrieving means and the data on contra-indicated liquid acquired from the patient chart data acquiring means.

12. The chemical liquid injection system according to claim 1, wherein

the liquid-identification data recorded on the data storing means includes data of a product ID,

at least data of a contained ingredient of the contra-indicated liquid for injection being registered as the data on contra-indicated liquid in the electric chart,

the chemical liquid injector further comprises ingredient storing means in which at least data of a contained ingredient for each of the product IDs is registered, and data retrieving means for retrieving the contained ingredient as the liquid-identification data from the ingredient storing means with the acquired product ID, and

the comparing means compares the liquid-identification data acquired by retrieving with the data retrieving means and the data on contra-indicated liquid acquired from the patient chart data acquiring means.

13. The chemical liquid injection system according to claim 1, wherein

the liquid-identification data recorded on the data storing means includes data of a product ID,

at least data of a chemical classification of the contra-indicated liquid for injection being registered as the data on contra-indicated liquid in the electric chart,

the chemical liquid injector further comprises data retrieving means for retrieving a chemical classification as the liquid-identification data from an external liquid database with the acquired product ID, at least the chemical classification being registered in the liquid-identification database for each of the product IDs, and

the comparing means compares the liquid-identification data acquired by retrieving with the data retrieving means and the data on contra-indicated liquid acquired from the patient chart data acquiring means.

14. The chemical liquid injection system according to claim 1, wherein

the liquid-identification data recorded on the data storing means includes data of a product ID,

at least data of a chemical classification of the contra-indicated liquid for injection being registered as the data on contra-indicated liquid in the electric chart,

the chemical liquid injector further comprises classification storing means in which at least data of a chemical classification for each of the product IDs is registered, and data retrieving means for retrieving the chemical classification as the liquid-identification data from the ingredient storing means with the acquired product ID, and

the comparing means compares the liquid-identification data acquired by retrieving with the data retrieving means and the data on contra-indicated liquid acquired from the patient chart data acquiring means.

15. A chemical liquid injector for injecting liquid into a patient by moving relatively a cylinder member and a piston member of a liquid syringe mounted replaceably on the chemical liquid injector, said liquid syringe having data storing means on which liquid identification data of the filled liquid and an injection pattern for varying the injection rate with time are recorded,

said chemical liquid injector comprising:

operation control means configured to control a liquid injection mechanism by changing the operation rate of the liquid injection mechanism with time in accordance with the injection pattern;

liquid data acquiring means for acquiring the data from the data storing means;

patient chart data acquiring means for acquiring date on contra-indicated liquid from an external electronic chart, wherein at least identification data for the contra-indicated liquid for injection are registered as the data on contra-indicated liquid in the electronic chart for each of the patients;

data comparing means for comparing the acquired liquid-identification data and the data on contra-indicated liquid; and

alarm notifying means for notifying an alarm when the liquid-identification data matches the data on contra-indicated liquid.

16. A chemical liquid injection system comprising:

(a) a liquid syringe comprising a cylinder member to be filled with a liquid and a piston member slidably inserted into the cylinder member, said liquid syringe further comprises data storing means being configured to store liquid-identification date for the liquid and an injection pattern for varying the injection rate of the liquid with time; and

(b) a chemical liquid injector for injecting the liquid into a patient by relatively moving the cylinder member and the piston member of the liquid syringe mounted thereon, said chemical liquid injector comprising;

operation control means configured to control a liquid injection mechanism by changing the operation rate of the liquid injection mechanism with time in accordance with the injection pattern;

a liquid-identification data reader for acquiring the date from the liquid syringe;

a patient data reader for acquiring data on contra-indicated liquid from an external electronic chart for the patent;

a data comparing unit for comparing the liquid-identification date and the date on contra-indicated liquid; and

a notifying device for notifying an outcome from the date comparing unit when the liquid-identification date are matched to the date on contra-indicated liquid.

17. A method of injecting a chemical liquid into a patient comprising:

providing a data carrier mounted on a liquid syringe, said data carrier having liquid-identification data for the filled liquid and an injection pattern for varying the injection rate with time recorded thereon,

replaceably mounting the liquid syringe on a chemical liquid injector, said liquid syringe comprising a cylinder member filled with a liquid and a piston member slidably inserted into the cylinder member;

acquiring liquid-identification data from the data carrier;

acquiring data on contra-indicated liquid from an external electronic chart, wherein at least identification data for the contra-indicated liquid for injection are registered as the data on contra-indicated liquid in an electronic chart for each of the patients;

comparing the acquired liquid-identification data and the acquired data on contra-indicated liquid;

notifying an alarm when the liquid-identification data matches the data on contra-indicated liquid;

injecting the liquid into a patient by relatively moving the cylinder member and the piston member of the liquid syringe; and

controlling the injection by changing the operation rate of the liquid injection mechanism with time in accordance with the injection pattern.