JP2010136853A - Transfusion pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small, light and silent transfusion pump which ensures a sufficient transfusion volume without contaminating the fluids being conveyed. <P>SOLUTION: The transfusion pump is constituted of cases 15 and 16 (fixed members) and a plurality of V-shaped organic actuator modules 1a, 1b, 1c, 1d, 1e, 1f and 1g which are arrayed on the cases in one direction and have electrodes 13 and 14 respectively at both ends while both the ends are fixed separately on the cases 15 and 16. The V-shaped organic actuator modules are so stretched or contracted as to get a transfusion tube 20 deformed being squeezed sequentially from its exterior thereby accomplishing the transfusion. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an infusion pump, and more particularly to a peristaltic (peristaltic) infusion pump that pumps out liquid by sequentially crushing a tube.

  In hospitals and the like, various infusion pumps configured to forcibly feed a chemical into the patient's body are used to control the amount of the chemical when injecting the chemical into a patient or to increase safety. Also in an analyzer or the like, an infusion pump is used in order to inject a certain amount of liquid sample into the analyzer with good controllability.

In such infusion pumps, peristaltic type infusion pumps in which the drug solution in the infusion tube is sent out by squeezing the flexible infusion tube are preferably used because they dislike contact with the members constituting the pump. . These include roller type and finger type. As the finger type, a type in which a shaft is rotated by a stepping motor and a tube is pushed by a peristaltic finger attached to the shaft is known. (For example, see Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4)
An actuator (organic actuator) itself made of an organic material in which conductive fine particles are dispersed in a resin is disclosed in Patent Document 5, for example.

JP 2007-32572 A JP 2008-034268 A JP 2005-188418 A JP-T-2005-522162 JP 2006-325335 A

  In recent years, in the medical field, there is an increasing need to administer a minute amount of drug solution over a long period of time in order to reduce the burden on the patient. In order to enable long-term administration of a drug solution, the practical use of a portable infusion pump is expected. To realize a portable infusion pump, it is essential to reduce the size and weight of the infusion pump. However, conventional infusion pumps have been difficult to reduce in size because large and heavy parts such as motors and cams are used to deform the infusion tube. In addition, the conventional infusion pump has a problem that the operation sound is loud and the patient who carries it is uncomfortable due to noise.

  By using an actuator (organic actuator) made of an organic material, it is possible to reduce the size and weight. An organic actuator is an actuator composed of an organic material that is deformed by an electric signal, and uses an operation due to the deformation for the actuator operation. By using the organic actuator, the material of the actuator part is lightweight, and it is not necessary to assemble a mechanism part such as a motor. Therefore, there is a possibility that a small and lightweight infusion pump can be realized. In addition, because there are no motors to deal with noise problems, there are few operating sounds, and the infusion solution is free from discomfort due to noise for the carrying patient and is suitable for use in a quiet place such as a hospital. A pump can be realized.

  The use of the organic actuator itself is disclosed in Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4. However, many infusion pumps using organic actuators proposed in the above-mentioned patent documents have a structure in which the actuator portion is in contact with the liquid to be infused, and contamination of the liquid to be transported such as medical use becomes a problem. Such applications are difficult to apply.

  Further, even in an infusion pump in which the organic actuator is outside the infusion tube as in Patent Document 1, in the case where the organic actuator is arranged in a ring shape around the tube, the organic actuator is greatly deformed in order to completely crush the infusion tube. There must be. When a deformable material that isotropically changes in size is used for the organic actuator, the actuator material must be deformed by several tens of percent in order to completely collapse the infusion tube. It is not easy to cause this amount of deformation with current organic actuators. In addition, if deformation of several tens of percent is caused in a material, a problem arises in durability of the actuator due to fatigue of the material. However, if the amount of deformation is small, the amount of crushing the infusion tube is insufficient, and it is difficult to deliver a sufficient amount of infusion.

  An object of the present invention is to provide a small, lightweight, and quiet infusion pump that does not cause contamination of the liquid to be transported and can deliver a sufficient infusion volume.

  As one embodiment for achieving the above object, there are a plurality of fixed plates, arranged in one direction on the fixed plates, each provided with electrodes at both ends, and both ends fixed to the fixed plates. An infusion pump comprising a V-shaped organic actuator module.

  By adopting the above-described configuration, it is possible to provide a small, light, and quiet infusion pump that does not cause contamination of the liquid to be transported and can deliver a sufficient amount of infusion.

  The infusion pump of the present invention uses a V-shaped organic actuator module as the organic actuator module. A V-shaped actuator module is an actuator module with a doubly-supported beam structure that fixes both ends of an actuator film shaped like a ribbon or string, and extends the actuator by applying a load to the center point of the actuator. And take out the displacement in the direction of load. Since the V-shaped actuator module can extract a large movement (displacement) even if the deformation of the actuator material itself is small, this module is used in the present invention.

  FIG. 1 is a schematic diagram illustrating the structure and operation of a V-shaped organic actuator module. Both ends of the organic actuator film 11 shaped in a ribbon shape are fixed, and a weight is hung as a load 12 in the center. The direction of the force applied by the load 12 is the y direction in the figure. Electrodes 13 and 14 are attached to both ends of the organic actuator film 11 so that a current can flow through the organic actuator film 11. FIG. 1A shows a schematic view of such a V-shaped organic actuator module 1 as viewed from the side in a state where no current is supplied. At this time, the organic actuator film 11 is fixed so as to be substantially flat. A state where the organic actuator film 11 is expanded by energization is the state shown in FIG. The organic actuator film 11 sags due to its extension, but is taken out as a displacement in the y direction in the figure by the load 12.

By using this V-shaped organic actuator module, the infusion tube can be largely crushed even when an organic actuator having a low expansion rate and a high durability as described in Patent Document 5 is used. A volume of infusion pump can be obtained. At this time, as a suitable actuator material for this purpose, a material that can generate enough force to crush the tube is preferable. In the case of an actuator in which the material itself is deformed, a force exceeding the limit at which the material itself breaks cannot be produced. That is, the maximum force generated as an actuator depends on the tensile strength of the material. Therefore, in the case of a material made of a mixture of conductive fine particles and a polymer material, such as the organic actuator disclosed in Patent Document 5, a resin having high tensile strength such as an acrylic resin, polyamide, polycarbonate, or polyimide is used as the polymer material. Suitable for purpose. The type of conductive fine particles is not limited, but a thin wire-like conductive filler is suitable for this purpose because it has the effect of increasing the strength of the material.
Embodiments of the present invention will be described below with reference to the drawings.

The basic structure of the first embodiment will be described with reference to FIG.
FIG. 2 is a schematic diagram for explaining the infusion pump device of this embodiment. FIG. 2A is a schematic view showing the configuration of the infusion pump device of this embodiment, and FIG. 2B is a cross-sectional view of the infusion pump 2 of this embodiment along the line XX. The infusion pump includes V-shaped organic actuator modules 1a, 1b, 1c, 1d, 1e, 1f, and 1g, and a lower case 15 and an upper case 16 for housing them. In addition, the infusion pump device includes a control circuit 27 and an input interface 28. Reference numeral 20 denotes an infusion tube, which is attached when actually used. Moreover, the case which consists of an upper case and a lower case is provided with the hole which the said infusion tube passes.

  In FIG. 2A, the upper case 16 is omitted from the drawing so that the inside can be easily understood. The V-shaped organic actuator modules 1 a, 1 b, 1 c, 1 d, 1 e, 1 f, and 1 g are arranged so as to cross the infusion tube 20 along the infusion direction of the infusion tube 20. Each V-shaped organic actuator module is connected to an external control circuit 27 for controlling the infusion rate, and an input interface 28 for setting the infusion rate is connected to the control circuit 27. The V-shaped organic actuator module locally deforms the infusion tube 20 by pushing the infusion tube 20 with an electrical signal from the control circuit 27. By controlling the magnitude and timing of the signal applied to each V-shaped organic actuator module 1a, 1b, 1c, 1d, 1e, 1f, 1g, the infusion tube 20 can be deformed in order and the liquid inside can be transported.

  The V-shaped organic actuator module is composed of an organic actuator film 11 and a pair of electrodes 13 and 14 as shown in FIG. The organic actuator film 11 is fixed at both ends to the lower case 15 of the infusion pump 2 via electrodes 13 and 14. The infusion tube 20 is sandwiched between the organic actuator film 11 and the upper case 16. That is, since the infusion tube 20 is pushed from the outside by the organic actuator film 11, the transported liquid is not contaminated.

  In FIG. 2 (A), the electrodes of the V-shaped organic actuator module are drawn so as to be separated independently, but it is sufficient that a current flows independently through the organic actuator film. Either one of them may be common. In this way, the process for producing a plurality of electrodes can be omitted.

  FIG. 3 is a cross-sectional view of an infusion pump for explaining the operation of the V-shaped organic actuator module. FIG. 3A shows a state where the actuator film 11 is extended by applying an electrical signal to the organic actuator film 11 via the electrodes 13 and 14. At this time, the actuator film 11 is slack, and the cross-sectional area of the infusion tube 20 is the largest.

  FIG. 3B shows a state where an electrical signal to the actuator film 11 is interrupted. At this time, the organic actuator film 11 is in a substantially straight state, whereby the infusion tube 20 is pressed against the upper case 16 of the infusion pump 2 by the organic actuator film 11. The sectional area of the infusion tube 20 is minimized by being sandwiched between the organic actuator film 11 and the upper case 16. The distance between the organic actuator film and the upper case 16 when the electric signal to the organic actuator film 11 is cut off may be a distance at which the infusion tube 20 can be crushed until the cross-sectional area of the infusion tube 20 becomes zero. Two times or less the wall thickness of the tube 20 is suitable. However, practically, the infusion tube 20 may be crushed until the cross-sectional area of the infusion tube 20 becomes 20% or less of the cross-sectional area before being crushed. In addition, it is desirable that the lower limit of the distance between the actuator and the upper case 16 when the electric signal to the actuator film 11 is interrupted is within a range where the infusion tube can be elastically deformed.

  Since the infusion pump 2 of the present embodiment deforms the organic actuator film 11 with an electric signal to send out the liquid in the infusion tube 20, the operating part is only the organic actuator film 11, and a large power source or Since the power transmission mechanism is not required, the structure becomes very simple, and the size can be easily reduced. Moreover, since the number of parts is reduced and assembly is facilitated, the manufacturing cost can be reduced. Furthermore, since members with mechanical operations such as electric motors, gears, cams, and links can be eliminated, noise can be reduced.

  In this example, a silicone rubber tube having an outer diameter of 1.2 mm and a wall thickness of 0.1 mm was used as the infusion tube 20. Further, specifically, the organic actuator film 11 is an organic actuator made of a material in which carbon fine particles are dispersed in an acrylic resin. The organic actuator film 11 is shaped to have a width of 1 mm, a length of 10 mm, and a thickness of 0.15 mm. did. Although seven organic actuator films are used here, the number of actuators may be plural. When a voltage of 5 V is applied to the organic actuator film 11 so that the film itself extends by 2%, the silicone tube can be crushed locally by 1 mm, and the infusion tube 20 can be almost opened and closed.

  As the input waveform, a sinusoidal wave is more suitable than a rectangular wave because infusion with less pulsating flow can be performed. In this embodiment, a battery and a sine wave oscillation circuit are incorporated in the control circuit 27, and a phase of a sine wave voltage having an amplitude of 5 V and a period of 0.3 seconds is applied to the V-shaped organic actuator module of the infusion pump. Entered with a shift. As a result, 10 ml of physiological saline per hour could be sent stably with good controllability. The liquid volume can be adjusted by changing the diameter of the infusion tube or changing the period of the input sine wave. The outer diameter of the infusion tube must be smaller than the deformable range of the V-shaped organic actuator module.

  In order to avoid the organic actuator film 11 from coming into direct contact with the infusion tube 20, a heat insulating spacer 19 is provided between the actuator film 11 and the infusion tube 20, as shown in FIG. The organic actuator used in this example is an actuator that uses thermal expansion caused by the generation of Joule heat by energization. Therefore, in order to prevent the heat of the organic actuator from being directly transferred to the infusion tube or the liquid inside, an insulating spacer is used. It is useful. In this case, the portion of the heat insulating spacer 19 that is fixed to the organic actuator film 11 should be as small as possible. This is because the fixed portion does not extend as an actuator, and the increase in the fixed portion serves to reduce the substantial amount of expansion and contraction. However, in order to crush the tube efficiently, the portion in contact with the tube should have a size about the tube diameter. The material of the heat insulating spacer 19 is preferably a material having low thermal conductivity such as resin or porous material. Furthermore, it is necessary to have heat resistance enough to withstand the heat generated by the organic actuator. In the case where the heat insulating spacer 19 is provided, the distance between the actuator and the upper case 16 when the electric signal to the actuator film 11 is interrupted is the height of the heat insulating spacer with respect to the distance described in FIG. The added distance may be used.

  The infusion pump of the present embodiment is installed in such a manner that the infusion tube 20 is sandwiched between the lower case 15 and the upper case 16. The state where the infusion tube 20 is arranged at the center of the organic actuator film 11 is the largest in deformation of the infusion tube. Therefore, the lower case 15 and the upper case 16 are used as a guide so as to fix the infusion tube 20 at the optimum position. Something like a dent should be provided. In this example, the combined shape of the upper case and the lower case is very small, with a width of 15 mm, a length of 25 mm, and a thickness of about 10 mm. You can also. In this case, the infusion pump device including the control circuit and the input interface can be fixed to the body and clothes such as the user's waist and back, or carried in a bag, together with the infusion reservoir connected to the tube.

In addition, the V-shaped organic actuator module of the present embodiment is fixed inside the cases 15 and 16, and can protect the V-shaped organic actuator module. When it is not particularly necessary to protect the case with a case, the organic actuator can be fixed to a fixing member such as a fixing plate instead of the case. (For example, a configuration without the lower case 15 in FIG. 2B)
As described above, according to the present embodiment, by using a V-shaped organic actuator module that fixes and extends both ends of a plurality of organic actuators, a peristaltic motion can be performed while sufficiently crushing an infusion tube. As a sufficient infusion volume can be delivered. Further, since the plurality of organic actuator modules are arranged outside the infusion tube, the organic actuator does not directly contact the infusion solution, so that the transported liquid is not contaminated. Moreover, there is no need to use an electric motor, gears, cams, links, etc., and a quiet, small and light infusion pump can be provided. In addition, by applying a sinusoidal voltage to the organic actuator, stable infusion can be performed with less pulsating flow. Furthermore, by inserting a heat insulating spacer between the organic actuator and the infusion tube, the influence of heat generated by the organic actuator on the infusion can be prevented or reduced.

  A second embodiment will be described with reference to FIG. The matters described in the first embodiment and not described in the present embodiment are the same as those in the first embodiment.

  FIG. 5 is a cross-sectional view of an infusion pump for explaining the operation of the V-shaped organic actuator module. The infusion pump 3 has a structure in which a plurality of V-shaped organic actuator modules 1 are arranged so as to face each other, and an infusion tube 20 is disposed so as to be sandwiched between the centers. FIG. 5 illustrates one of these operations.

  Both ends of the organic actuator film 11 are fixed to the lower case 35 of the infusion pump 3 via the electrodes 13 and 14. Both ends of the organic actuator film 31 are fixed to the upper case 36 of the infusion pump 3 via electrodes 33 and 34. The organic actuator films 11 and 31 are separated by spacers 43 and 44 at both ends.

  FIG. 5A shows an organic actuator module in a state where the actuator films 11 and 31 are stretched by applying electric signals to the organic actuator films 11 and 31 through the electrodes 13 and 14 and the electrodes 33 and 34, respectively. It is sectional drawing shown typically. At this time, the actuator films 11 and 31 sag and the cross-sectional area of the infusion tube 20 is the largest.

  FIG. 5B is a cross-sectional view in a state where an electric signal to the actuator films 11 and 31 is cut off. At this time, the actuator membranes 11 and 31 are in a substantially straight state, whereby the infusion tube 20 is crushed by being sandwiched by the actuator membranes 11 and 31, and the cross-sectional area of the infusion tube 20 is minimized. .

  Here, the organic actuator films 11 and 31 have a structure in which the infusion tube is directly sandwiched. However, as described in Example 1, a heat insulating spacer is provided between the organic actuator films 11 and 31 so that the organic actuator film does not directly contact the infusion tube. It does not matter if it is provided. The height of the spacers 43 and 44 between the organic actuator film 11 and the organic actuator film 31 is the distance between the organic actuator and the upper case 16 when the electric signal to the organic actuator film 11 of Example 1 is cut off. It is determined based on the same idea.

  In this embodiment, since the insulating spacers 43 and 44 are used, in order to give an electric signal to the organic actuator films 11 and 31, the organic actuator films 11 and 31 are respectively connected to the electrodes 13, 14, 33 and 34. Connected. If the organic actuator films 11 and 31 are moved synchronously, conductive spacers 43 and 44 may be used instead of the electrodes. In this way, for example, the electrodes 33 and 34 of the upper case 36 can be omitted.

  In the present embodiment, similarly to the first embodiment, it is possible to provide a small, light and quiet infusion pump capable of delivering a sufficient amount of infusion without causing contamination of the liquid to be transported. In addition, since the length of the organic actuator film can be halved as compared with the first embodiment, the size of the infusion pump can be reduced.

  The third embodiment will be described below. The matters described in the first embodiment and not described in the present embodiment are the same as those in the first embodiment.

  The infusion pump of the present embodiment has the same basic structure as that of the first embodiment, that is, an upper case, a lower case in which an actuator module is disposed, and an infusion tube between them. The V-shaped organic actuator module to be arranged does not use a plurality of V-shaped organic actuator modules using an organic actuator film, but uses a V-shaped organic actuator module composed of one organic actuator sheet. Is different.

  FIG. 6 is a plan view schematically showing the structure of the infusion pump 4 having the organic actuator sheet of this example. The upper case is removed and the inside can be seen. The organic actuator sheet 110 is a single sheet, and two sides (left and right sides in FIG. 6) are fixed by the lower case 15 of the infusion pump 4. In the lower case 15, a plurality of opposing electrodes 13 and 14 are arranged at a position where the organic actuator sheet 110 is fixed. The organic actuator sheet 110 has a configuration in which a plurality of actuator regions 111 and non-actuator regions 112 are periodically repeated in a band shape.

  The width of the actuator region 111 is smaller than the width of the electrodes 13 and 14 installed in the lower case 15, and the cycle thereof is the same as the cycle of the electrodes 13 and 14. Therefore, the organic actuator sheet 110 can be disposed in the lower case 15 so that one band-shaped organic actuator region is connected to a set of electrodes.

  By giving an electric signal to each actuator region in order, the organic actuator sheet 110 can be operated to wave. The infusion tube 20 disposed in the center of the organic actuator sheet 110 is sandwiched between the organic actuator sheet 110 and the upper case, and the infusion tube 20 is deformed in order to transport the liquid inside.

  As described above, when the organic actuator sheet as in the present embodiment is used, a single sheet-like organic actuator can perform a peristaltic motion, so there is no need to attach a plurality of actuator films, and the manufacturing process is simplified. is there.

  A method for producing the organic actuator sheet 110 will be described. A material in which carbon fine particles are dispersed in acrylic resin was used as a material constituting the actuator region, and an acrylic resin not containing carbon fine particles was used as a material constituting the non-actuator region. A material constituting the actuator region, in which carbon fine particles are dispersed in an acrylic resin, which is made into an ink by adding an organic solvent, is printed in a plurality of strips on the substrate by a screen printing method. Here, Teflon (registered trademark) was used for the substrate in consideration of peeling the sheet from the substrate after the material was cured. This is placed in an oven at 140 degrees with the substrate and dried and cured for 10 minutes.

  Next, a material that forms the non-actuator region, which is made into an ink by adding a solvent to the acrylic resin, is overlapped with the material that forms the actuator region that has been cured by screen printing. Print in multiple strips.

  The substrate was again dried and cured for 10 minutes in an oven at 140 degrees, and peeled off from the substrate to obtain an organic actuator sheet. Here, as the material constituting the non-actuator region, the same kind of resin as the material constituting the actuator region is used, but a different resin may be used. As a material constituting the non-actuator region, a flexible material that can flexibly follow the deformation of the adjacent actuator region is suitable. For example, silicone resin or urethane resin is suitable.

  In this embodiment, the upper case is the same as that of the first embodiment. However, as in the second embodiment, an upper case having the same actuator sheet as that of the lower case may be used.

  In the present embodiment, as in the first embodiment, it is possible to provide a small, light and quiet infusion pump capable of delivering a sufficient amount of infusion without causing contamination of the liquid to be transported. Further, by using the actuator sheet, it is possible to increase the accuracy of the installation interval of each actuator, and to control the infusion volume with higher accuracy. Moreover, assembly becomes easy and production cost can be reduced.

It is a figure for demonstrating the structure and operation | movement of a V-shaped organic actuator module, (A) is a schematic diagram which shows the state which has not energized the V-shaped organic actuator module, (B) is energized to (A) It is a schematic diagram which shows the state which carried out. It is a schematic diagram for demonstrating the infusion pump apparatus of Example 1, (A) is a figure which shows the structure of an infusion pump apparatus, (B) is sectional drawing of the infusion pump in the XX line of (A). is there. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram of the infusion pump for demonstrating operation | movement of the V-shaped organic actuator module of Example 1, (A) is sectional drawing in the state to which the electric signal was given, (B) is an electric signal cut off. It is sectional drawing in the state made. It is sectional drawing which shows typically an infusion pump when the heat-insulating spacer is further provided in the infusion pump of Example 1. FIG. FIG. 6 is a schematic diagram of an infusion pump for explaining the operation of the V-shaped organic actuator module of Example 2, where (A) is a cross-sectional view in a state where an electric signal is applied, and (B) is an electric signal cut-off. It is sectional drawing in the state made. It is a top view which shows typically the structure of the infusion pump using the V-shaped organic actuator sheet | seat of Example 3. FIG.

Explanation of symbols

1, 1a, 1b, 1c, 1d, 1e, 1f, 1g ... V-shaped organic actuator module, 2, 3, 4 ... infusion pump, 11 ... organic actuator membrane, 12 ... load, 13, 14 ... electrode, 15 ... Lower case, 16 ... upper case, 19 ... heat insulating spacer, 20 ... infusion tube, 27 ... control circuit, 28 ... input interface, 31 ... organic actuator membrane, 33, 34 ... electrode, 35 ... lower case, 36 ... upper case, 43, 44 ... spacer, 110 ... organic actuator sheet, 111 ... actuator region, 112 ... non-actuator region.

Claims (18)

A fixed plate,
An infusion pump comprising: a plurality of V-shaped organic actuator modules arranged in one direction on the fixed plate, each having electrodes at both ends, and both ends fixed to the fixed plate . The infusion pump according to claim 1,
A plurality of the V-shaped organic actuator modules are deformed when an electric signal is supplied to the electrodes. The infusion pump according to claim 1 or 2,
An infusion pump, wherein the infusion tube is disposed between the fixed plate and the plurality of V-shaped organic actuator modules. The infusion pump according to claim 3,
The infusion pump, wherein the infusion tube performs a peristaltic movement by deformation of the plurality of V-shaped organic actuator modules. The infusion pump according to claim 3 or 4,
An infusion pump, wherein a heat insulating spacer is provided between the infusion tube and the plurality of V-shaped organic actuator modules. The infusion pump according to claim 1 or 2,
The infusion pump, wherein the plurality of V-shaped organic actuator modules are arranged in two upper and lower stages via a spacer. The infusion pump according to claim 6,
An infusion pump, wherein the infusion tube is arranged between the plurality of V-shaped organic actuator modules arranged in the upper stage and the plurality of V-shaped organic actuator modules arranged in the lower stage. The infusion pump according to claim 7,
2. The infusion pump according to claim 1, wherein the infusion tube performs a peristaltic motion by deformation of the plurality of V-shaped organic actuator modules arranged in two upper and lower stages. The infusion pump according to claim 1 or 2,
A plurality of the V-shaped organic actuator modules are provided on a single organic actuator sheet. The infusion pump according to claim 9,
An infusion pump, wherein the infusion tube is disposed between the fixing plate and the V-shaped organic actuator module provided on the organic actuator sheet. The infusion pump according to claim 10,
The infusion pump, wherein the infusion tube performs a peristaltic movement by deformation of the plurality of V-shaped organic actuator modules. In an infusion pump that has a case and performs infusion by deforming an infusion tube from the outside by an organic actuator made of a material that expands and contracts by an electrical signal,
An infusion pump characterized in that two places of the organic actuator are fixed to the case, and the infusion tube is arranged in the center of the fixing point. The infusion pump according to claim 12,
2. The infusion pump according to claim 1, wherein the organic actuator has a plurality of ribbons and is arranged so that the infusion tube and the longitudinal direction of the organic actuator are orthogonal. The infusion pump according to claim 12,
The organic actuator is a single sheet, which is composed of a band-shaped organic actuator region and a non-actuator region, and the sheet is disposed so that the longitudinal direction of the band-shaped organic actuator region and the infusion tube are perpendicular to each other. An infusion pump characterized by that. The infusion pump according to any one of claims 12 to 14,
An infusion pump characterized in that the infusion tube is deformed by sandwiching the infusion tube between the organic actuator and the case to which the organic actuator is fixed. The infusion pump according to any one of claims 12 to 14,
The same organic actuator as the organic actuator is disposed so as to face the organic actuator and the infusion tube, and the infusion tube is deformed by sandwiching the infusion tube between two opposing organic actuators. An infusion pump characterized by infusion. The infusion pump according to any one of claims 12 to 16,
The infusion pump characterized in that the organic actuator has at least a pair of electrodes and is made of a material that deforms when energized between the electrodes. The infusion pump according to any one of claims 12 to 17,
The infusion pump, wherein the organic actuator is an actuator containing conductive fine particles and a polymer.

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