JP2009050289A - Method of sucking medicinal liquid, automatic suction machine and automatic injection machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of sucking medicinal liquid, an automatic suction machine and an automatic injection machine, which enables the good confirmation of the data related to the medicinal liquid in a syringe and advantageous even from an aspect of cost. <P>SOLUTION: In the medicinal liquid sucking method, the medicinal liquid is sucked into the empty syringe 200 using the automatic suction machine 80. A heat-sensitive label 20, of which the display content is irreversibly changed by heating, is attached to the cylinder member 220 of the syringe 200 and the automatic suction machine 80 is equipped with a heating type writing means 88 for applying heat to the heat-sensitive label 20. The medicinal liquid sucking method includes the step of mounting the empty syringe on the automatic suction machine 80 to suck the medicinal liquid in the syringe and the step of operating the heating type writing means 88 by the automatic suction machine 80 to heat the heat-sensitive label 20 of the syringe and altering the display content of the label to record predetermined data on the heat-sensitive label 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a chemical liquid suction method for sucking a chemical liquid into a syringe, an automatic suction machine, and an automatic injection machine. In particular, the present invention relates to a chemical liquid suction method, an automatic suction machine, and an automatic injection machine that can confirm information on a chemical liquid in a syringe well and are advantageous in terms of cost.

Medical fluoroscopic imaging devices include CT (Computed Tomography) scanners, MRI (Magnetic Resonance Imaging) devices, and PET (Positron).
Emission Tomography) apparatus, ultrasonic diagnostic apparatus, CT angiographic apparatus, MR angio apparatus and the like are known.

  When such a device is used, for example, a contrast medium or physiological saline (hereinafter also simply referred to as “medical solution”) may be injected into the patient's body for the purpose of obtaining a clear image. .

  Syringes used for injecting medicinal solutions are called prefilled types in which the medicinal solution is initially filled in the syringes, and suction types in which a predetermined amount of medicinal solution is sucked into the syringe from a medicinal solution tank containing the medicinal solution. There is a thing.

Patent Document 1 discloses an apparatus for automatically sucking a predetermined amount of a chemical solution into a suction type syringe. Patent Document 2 discloses an automatic injector equipped with a function of pulling a piston of a syringe to suck a liquid medicine in the liquid medicine tank into the syringe and a function of pushing the piston and pushing out the liquid medicine in the syringe toward the subject. It is disclosed.
JP 2000-189515 A JP 2002-102343 A

  According to the automatic suction machine and the automatic injection machine as described above, an accurate amount of a chemical solution can be automatically sucked and injected, and it does not take time and effort, so that it has been widely used in recent years.

  On the other hand, differences in the types and components of chemicals are difficult to understand from the appearance. For this reason, in order to further reduce the possibility of erroneous chemical injection to the subject, it is desirable that the type of chemical liquid contained in the syringe and the expiration date can be easily confirmed.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to provide a chemical solution suction method, an automatic suction device, and an automatic injection device that can favorably confirm information related to a chemical solution in a syringe and that are advantageous in terms of cost. There is to do.

The chemical liquid suction method of the present invention for achieving the above object is a chemical liquid suction method for sucking a chemical liquid into an empty syringe using an automatic suction machine,
The cylinder member of the syringe is attached with a heat-sensitive label whose display content changes irreversibly by being heated,
The automatic suction machine includes heating type writing means for applying heat to the thermosensitive label,
A step of attaching an empty syringe to the automatic suction machine and sucking a chemical into the syringe;
The automatic aspirator operating the heating type writing means to heat the thermosensitive label of the syringe and changing the display content of the label to record predetermined information on the thermosensitive label.

  According to such a method, a predetermined amount of chemical solution is automatically filled in the syringe, and predetermined information is recorded on the thermal label. Since the heat-sensitive label is irreversible, the display content does not change even if the series of operations is completed and the label returns to room temperature. Thereafter, the operator can remove the syringe from the injector and place it on the automatic injector to automatically inject the drug solution. Here, according to the present invention, since the operator can visually read the information of the syringe thermosensitive label and set, for example, the injection conditions based on the information, it is difficult for the subject to inject inappropriate chemical liquid. .

  In addition, since a heat-sensitive label is used as an information storage medium, the cost is lower than that of, for example, an RFID tag, and a dedicated device is not required for reading information.

  In the present invention, the step of recording the predetermined information may be performed in parallel with the step of sucking the chemical into the syringe, or may be performed after the step is completed.

  In the present invention, the predetermined information preferably relates to the type, amount, expiration date, suitable injection speed, or suitable injection pressure of the chemical solution.

  The thermosensitive label may have a plurality of indicator portions that change color by heating, and may indicate the predetermined information by the number of indicator portions that have changed color.

The automatic suction machine of the present invention is an automatic suction machine that sucks a chemical into an empty syringe,
Holding means for holding a syringe attached with a heat-sensitive label whose display content changes irreversibly by being heated,
Piston driving means for retracting and moving the piston with respect to the cylinder member;
Heating-type writing means for applying heat to the thermosensitive label;
Is provided.

The automatic injection machine of the present invention has a function of sucking a chemical solution into an empty syringe,
Holding means for holding a syringe attached with a heat-sensitive label whose display content changes irreversibly by being heated,
Piston driving means for moving the piston forward and backward with respect to the cylinder member;
Heating-type writing means for applying heat to the thermosensitive label;
Is provided.

  In the automatic injector of the present invention, when the heating type writing means has a function of keeping the chemical solution in the syringe at a predetermined temperature, the configuration of the injector can be simplified, and the size of the injector can be reduced. It is advantageous.

Specifically, the automatic injection machine of the present invention is,
An operation of pushing out the chemical liquid in the syringe by driving the piston driving means and pushing the piston;
An operation of recording information indicating that the syringe has been used on the thermosensitive label by operating the heating type writing means to heat the thermosensitive label of the syringe and changing the display content of the label. Can be done.

  As described above, according to the present invention, by using the heat-sensitive label attached to the syringe, it is possible to satisfactorily confirm information related to the chemical solution in the syringe, and the chemical solution suction method, automatic suction machine, and An automatic injector can be provided.

(First embodiment)
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of an automatic suction machine according to the present invention.

  The automatic suction device 80 of the present embodiment shown in FIG. 1 is for sucking a chemical solution into an empty syringe 200.

  The syringe 200 is a conventional one, and includes a cylindrical cylinder member 210 and a piston 220 that is slidably inserted therein. A conduit portion to which a tube is connected is formed at the tip (right side of the figure) of the cylinder member 210. A flange portion is formed at the rear end of the cylinder member 210. A gasket (not shown) is provided at the front end of the piston 220, and a disc-shaped flange portion is formed at the rear end.

  The automatic suction machine 80 has a slightly flat square shape as a whole, and a display 85 and input keys 87 are arranged on the upper surface thereof. A holding unit 81 to which the syringe 200 is attached is provided near the back corner of the suction device 80. The holding part 81 is formed in a semicylindrical shape corresponding to the syringe 200. The syringe 200 is set in the holding portion 81 so that the conduit portion of the cylinder member 210 faces outward.

  A piston drive mechanism 83 that grips a part of the piston 200 and moves the piston with respect to the cylinder member 210 is provided slightly on the left side of the holding portion 81 (the side on which the piston 220 is located). Although illustration is omitted, the piston drive mechanism 83 includes a motor serving as a drive source, a mechanism for converting the output from the motor into linear motion, and the like.

  At the bottom of the holding portion 81, a heating portion 88 having an electric heater, a thermo stud, etc. (all not shown) is provided. As a specific example, the electric heater may be provided in a semi-cylindrical shape along a part of the outer peripheral surface of the cylinder member 210. As will be described later, the heating unit 88 applies heat to the heat-sensitive label 20 attached to the cylinder member 210 (see details below, see FIG. 2).

  As shown in FIG. 2, the thermal label 20 is a label attached to the outer peripheral surface of the cylinder member 210. In this example, the thermal label 20 is a slightly horizontally long rectangle. As an example, three indicator portions (round shapes) 21a, 21b, and 21c are arranged side by side near the center.

  The indicator portions 21a to 21c are coated with a temperature indicating paint, and the color changes irreversibly when heated to a predetermined temperature. The temperature at which the color changes may be different for each indicator unit, or may be the same.

  As described above, when there are three indicator units 21a to 21c, the heating unit 88 includes three heating elements that can operate independently so that heat can be individually applied to each indicator unit. You may have. For example, when only one indicator portion 21a is desired to be heated, a voltage may be applied only to an element such as the indicator portion 21a.

  Next, the operation of the automatic injector of the present embodiment configured as described above will be described. FIG. 3 is a flowchart showing a procedure of chemical liquid suction according to the present embodiment.

  First, as shown in FIG. 1, the operator sets an empty syringe 200 in the holding unit 81 of the suction machine (step S1). In this state, the rear end of the piston 220 of the cylinder is gripped by the piston drive mechanism 83. Further, the thermosensitive label 20 of the syringe faces downward and faces the heating unit 88. All the three indicator parts 21a to 21c of the thermal label 20 remain in the initial color.

  In FIG. 1, an empty syringe 200 is connected to a chemical solution tank (not shown) through a tube. A predetermined amount of chemical liquid (for example, contrast medium or physiological saline) is stored in the chemical liquid tank.

  After the syringe 200 is set in the suction machine, the operator then performs a predetermined input operation to drive the piston driving means 83. Thereby, piston 220 is pulled and a chemical | medical solution is attracted | sucked in a syringe (step S2).

  Although not particularly limited, the chemical liquid suction operation can be ended when the piston 220 is pulled to a predetermined position, for example.

  Next, the suction device 80 operates the heating unit 88 to heat the thermosensitive label 20 of the syringe. For example, the operation may be performed so that only two of the three indicators 21a and 21b change color (see FIG. 2B). As a specific example, the color of one of the indicator portions 21a may be changed to indicate that a predetermined type of chemical solution is filled. Moreover, the color of the other indicator part 21b may be changed in order to show that a predetermined amount of chemical | medical solution was filled into the syringe.

  The “information about the chemical solution” includes information such as the type (type), volume, expiration date, suitable injection pressure, and injection rate of the chemical solution. Moreover, when a chemical | medical solution is a contrast agent, information, such as an iodine containing density | concentration, may be sufficient.

  Through the above series of steps, the syringe 200 is automatically filled with a predetermined amount of chemical solution, and predetermined information about the chemical solution is recorded on the thermal label 20. Since the heat-sensitive label 20 of the present embodiment is irreversible, even when the operation of the heating unit 88 of the suction device 80 ends and the label 20 returns to room temperature, the color of each indicator unit is heated. Is maintained.

  Thereafter, the operator can remove the syringe 200 from the injector 80, and replace the syringe 200 with, for example, an automatic injector (not shown) to automatically inject a medical solution from the automatic injector into a subject (not shown). . Here, according to the configuration of the present embodiment, the operator can visually read the information on the thermal label 20 of the syringe 200 and set the injection conditions of the automatic injector based on the information.

  In the case of the present embodiment, since the information on the thermal label 20 can be read visually, a dedicated reading device such as an RFID reader is not required, and reading does not take time. In addition, the thermal label 20 has an advantage that the cost is low as compared with the case where an RFID tag is used.

  The type of the thermal label 20 may be appropriately selected according to the content of information stored in the label. In the above example, the number of indicator units may be one or two, or four or more.

  Moreover, indicator part 21a-21c is not limited to a round side, A rectangle or a polygon may be sufficient. In addition, it is also possible to use a pattern whose number changes by applying heat or a figure that appears.

(Second Embodiment)
FIG. 4 is a perspective view showing an example of the automatic injector of the present invention.

  As shown in the figure, the automatic injector 110 has an elongated shape as a whole, and a concave portion 114 to which the syringe 200 is attached is provided on the front side of the upper surface thereof. The recess 114 is formed in a semi-cylindrical shape corresponding to the shape of the syringe 200. The recess 114 extends in the length direction of the device 110 and is formed over approximately half the length of the entire device 110.

  At substantially the center in the length direction of the recess 114, holding members 122 and 122 for holding the flange portion of the cylinder member are provided. The holding members 122 and 122 are a pair of members that sandwich and hold the flange portion 211 from both sides, and have arc-shaped grooves into which the flange portion is inserted.

  A piston drive mechanism 130 that slides the piston 220 is disposed near the rear end of the recess 114. The piston drive mechanism 130 includes a ball screw that rotates using a motor (not shown) as a drive source, and a member that is attached to the front side of the ball screw and reciprocates in a direction along the screw according to the rotation of the screw. Yes. A part of this member is provided with a claw for gripping the flange portion at the rear end of the piston 220.

  As shown in FIG. 4, a heating unit 118 for keeping the chemical solution in the syringe 200 at a predetermined temperature is provided at the bottom of the recess 114. The heating unit 118 includes an electric heater and the like, as in the above embodiment. As in the above embodiment, the electric heater may be provided in a semi-cylindrical shape so as to follow the outer peripheral surface of the cylinder member 210.

  Next, the operation of the automatic injector with a suction function of the present embodiment configured as described above will be described. FIG. 5 is a flowchart showing a series of procedures from suction to injection of a chemical solution.

  First, as shown in FIG. 5, the operator sets an empty syringe 200 in the recess 114 of the injector (step S11). In this state, the rear end of the piston 200 of the cylinder is gripped by the piston drive mechanism 130. The thermal label 20 attached to the syringe faces downward and faces the heating unit 118. All the three indicator parts 21a to 21c of the thermal label 20 remain in the initial color.

  When the syringe 200 is set in the injector as described above, the operator then performs a predetermined input operation to drive the piston driving means 130. Thereby, piston 220 is pulled and a chemical | medical solution is attracted | sucked in a syringe (step S12).

  In this example, the injection operation similar to that performed by a general automatic injector is then performed (step S13). Thereby, all or a part of the chemical solution in the syringe 200 is pushed out to the subject. Note that the amount of the chemical solution to be injected into the subject and the injection speed are set in advance by the operator using a controller with a monitor (not shown), for example.

  In addition, by operating the heating unit 118 as necessary during the injection operation, the chemical solution in the syringe can be maintained at a predetermined temperature (for example, about 36 ° C.).

  Next, the injector 110 operates the heating unit 118 to apply heat to the thermosensitive label 20 of the syringe. Thereby, for example, as in the above-described embodiment, the colors of the two indicators 21a and 21b among the three are changed (step S14). In this case, for example, if the colors of the two indicator portions 21a and 21b have changed, it may be assumed that the syringe has been used. Even if some chemical solution remains in the syringe, it can be known that the syringe has been used.

  As described above, according to the automatic injector 110 of the present embodiment, since the heating unit 118 for heating the thermal label 20 attached to the syringe 200 is provided, the label is the same as in the first embodiment. 20 can record predetermined information about the chemical solution. In particular, since the heating unit 118 also has a function of keeping the chemical solution in the syringe at a predetermined temperature, the configuration of the injector can be simplified compared to the case where a dedicated heating unit is provided. It is also advantageous for downsizing.

  The specific configuration example of the present invention has been described above, but the present invention can be variously modified in addition to the above. For example, the automatic injector of the present invention may be equipped with a plurality of syringes (for contrast medium and physiological saline, etc.), and can record predetermined information on the thermosensitive label 20 of each syringe.

  Further, in the example of FIG. 5, the chemical solution is sucked into the syringe 200 by the automatic injector 110, but after this suction is completed, the writing operation to the thermal label 20 is the same as in the first embodiment. May be performed.

It is a perspective view which shows an example of the automatic suction machine of this invention (1st Embodiment). It is a top view which shows the thermosensitive label attached to the syringe, (A) shows an initial state, (B) shows a state after use. It is a flowchart which shows the procedure of the chemical | medical solution attraction | suction of this embodiment. It is a perspective view which shows an example of the automatic injection machine of this invention (2nd Embodiment). It is a flowchart which shows the procedure of the chemical | medical solution injection | pouring of this embodiment.

Explanation of symbols

20 thermosensitive labels 21a to 21c indicator unit 80 automatic suction device 81 holding unit 83 piston drive mechanism 85 display 88 heating unit 110 automatic injector 114 recess 122 holding member 130 piston drive mechanism 200 syringe 210 cylinder member 220 piston

Claims (9)

A chemical solution suction method for sucking a chemical solution into an empty syringe using an automatic suction machine,
The cylinder member of the syringe is attached with a heat-sensitive label whose display content changes irreversibly by being heated,
The automatic suction machine includes heating type writing means for applying heat to the thermosensitive label,
A step of attaching an empty syringe to the automatic suction machine and sucking a chemical into the syringe;
The automatic suction machine operates the heating type writing means to heat the thermosensitive label of the syringe, and changes the display content of the label to record predetermined information on the thermosensitive label; and
A method for sucking a chemical solution.   The chemical solution suction method according to claim 1, wherein the step of recording the predetermined information is performed in parallel with the step of sucking the chemical solution into the syringe or after the step is completed.   The chemical solution suction method according to claim 1 or 2, wherein the predetermined information relates to the type, amount, expiration date, suitable injection speed, or suitable injection pressure of the chemical solution sucked into the syringe.   The chemical solution according to claim 1, wherein the thermosensitive label has a plurality of indicator portions that change color by heating, and indicates the predetermined information by the number of the indicator portions that have changed color. Suction method. An automatic suction machine that sucks a chemical into an empty syringe,
Holding means for holding a syringe attached with a heat-sensitive label whose display content changes irreversibly by being heated,
Piston driving means for retracting and moving the piston with respect to the cylinder member;
Heating-type writing means for applying heat to the thermosensitive label;
Equipped with an automatic suction machine. An operation of driving the piston driving means and pulling the piston to suck the chemical into the syringe;
The operation of recording predetermined information on the thermosensitive label is performed by operating the heating type writing unit to heat the thermosensitive label of the syringe and changing the display content of the label. Automatic suction machine. Holding means for holding a syringe attached with a heat-sensitive label whose display content changes irreversibly by being heated,
Piston driving means for moving the piston forward and backward with respect to the cylinder member;
Heating-type writing means for applying heat to the thermosensitive label;
An automatic injection machine with a suction function.   The automatic injector according to claim 7, wherein the heating type writing unit has a function of maintaining a chemical solution in the syringe at a predetermined temperature. An operation of pushing out the chemical liquid in the syringe by driving the piston driving means and pushing the piston;
By operating the heating type writing means to heat the thermosensitive label of the syringe and changing the display content of the label, the operation to record information indicating that the syringe has been used on the thermosensitive label; and
The automatic injector according to claim 7 or 8, wherein:

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