WO2011121923A1

WO2011121923A1 - Infusion pump

Info

Publication number: WO2011121923A1
Application number: PCT/JP2011/001584
Authority: WO
Inventors: 智宏畠; 勝中西
Original assignee: テルモ株式会社
Priority date: 2010-03-31
Filing date: 2011-03-17
Publication date: 2011-10-06
Also published as: JP2011212112A

Abstract

The disclosed infusion pump has: a rotating arm, which is rotatably provided to a main body such that the tip end is exposed by the front panel of the main body and which forms a tube clamp that catches and blocks an infusion tube between protrusions fixed to the front panel; and a release lever, which transforms applied pressing force into rotational force for the rotating arm in order to release the tube clamp. When the tube clamp is blocking the infusion tube, the rotating arm puts a clip, which has been loaded by a clip loading part, into a closed state via a contact surface that comes into contact with the clip. When the door of the main body closes, the lever member is pressed, the closed state of the tube clamp is released and the rotating arm and the closed clip separate. In this state, the protrusions provided on the door act to release the clip.

Description

Infusion pump

The present invention relates to an infusion pump for feeding liquid by pressing the outer peripheral surface of an infusion tube.

An infusion pump having a pump mechanism that holds an infusion tube connected to a chemical solution bag and feeds the outer peripheral surface of the infusion tube by pressing operation of a plurality of fingers is used (Patent Document 1). In such a pump mechanism having a plurality of fingers, each finger is individually operated sequentially by a cam provided for each finger. That is, by individually reciprocating the fingers along the cam surface, the infusion tube is pressed and released at a predetermined coordinated timing, thereby realizing liquid feeding at a desired speed (flow rate). Yes.

Generally, as will be described later with reference to FIG. 1, the infusion pump is used by being attached to an infusion stand on which an infusion bag is set. The infusion bag is set at a high position on the infusion stand, and a clamp and a venous needle are connected downstream of the infusion pump in the liquid feeding direction. The vein puncture needle is inserted into the patient's vein and placed, so that the drug solution in the infusion bag is injected at a predetermined flow rate (mL / h) set for the patient. The infusion pump holds the infusion tube between the body and the door by closing the door, and controls the infusion volume by sandwiching the infusion tube between the finger of the pump mechanism and the back plate provided on the back surface of the door. . Therefore, when the door is opened, the liquid from the infusion bag freely flows into the patient through the infusion tube and the venous needle (free flow).

Usually, the occurrence of such free flow is prevented by a procedure of opening the infusion pump door after the infusion tube is closed by a tube closing member called a clamp. However, in recent hospitals and the like, it is fully predicted that the above-mentioned Clemme occlusion will be forgotten due to the introduction of various medical instruments and the lack of skilled nurses. For this reason, safety problems for patients have been pointed out.

In view of such a problem, Patent Document 1 proposes an infusion pump in which a tube clamp portion that closes an infusion tube when the door is opened is provided on the front panel. In Patent Document 1, a free flow restraining clip (anti-free flow (AFF) clip) that maintains the infusion tube in a closed state is further provided in the middle of the infusion tube to more reliably prevent the occurrence of free flow. In Patent Document 1, when an infusion tube is closed with a tube clamp and the door is closed with a closed AFF clip loaded, the tube clamp and the AFF clip are released by a convex member or the like provided on the door side. That is, the closed state of the infusion tube is released by closing the door, and the infusion is enabled. In addition, when the door is opened from this state, the tube clamp and the AFF clip are again shifted to the closed state.

JP 2004-73822 A.

As described above, since the infusion pump is used by being mounted on an infusion stand, it is desired to reduce the weight and size. In order to protect a patient from the occurrence of free flow, it is desirable to use a tube clamp portion and an AFF clip in combination as proposed in Patent Document 1. However, when both a mechanism for making the tube clamp portion closed and released and a mechanism for making the AFF clip loaded in the infusion pump closed and released are required, the structure becomes complicated and the parts This will increase the score. As a result, downsizing of the infusion pump is hindered and also causes an increase in cost.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an infusion pump that enables a tube clamp and an AFF clip to be used in combination, and makes them closed and open with a simpler mechanism. To do.

In order to achieve the above object, an infusion pump according to one embodiment of the present invention comprises the following arrangement. That is,
An infusion pump that holds an infusion tube between a door and a front panel of a main body and sequentially injects the infusion tube to infuse the infusion tube. The intermediate portion of the infusion tube is closed by applying a force in a first direction. Clip loading means for loading a clip that is in a closed state and in a released state capable of infusion by application of a force in a second direction different from the first direction, and the tip portion is exposed from the front panel A pivot arm provided rotatably on the main body, biased in the direction of a fixed piece fixed to the front panel, and closing the infusion tube with the tip portion and the fixed piece; A part protrudes from the panel to form a protruding portion, and the pressing force applied to the protruding portion is converted into a rotational force that rotates the rotating arm in a release direction opposite to the biasing direction. Blocking by the rotating arm A lever member for releasing the state, wherein the rotating arm has a contact surface in contact with the clip loaded in the clip loading means, and the distal end portion and the fixed piece of the rotating arm are connected to the infusion tube. If the clip is closed by applying a force in the first direction to the clip through the contact surface, and the door is closed, the door is the lever member. The pressing force is applied to the rotating arm so that the rotating arm is rotated in the releasing direction to release the closed state by the distal end portion, the contact surface is separated from the clip in the closed state, and the door is further A force in the second direction is applied to the clip to release the closed state of the clip.

According to the present invention, there is provided an infusion pump that makes it possible to use a tube clamp and an AFF clip in combination, and that makes them closed and released by a simpler mechanism.

Other features and advantages of the present invention will become apparent from the following description with reference to the accompanying drawings. In the accompanying drawings, the same or similar components are denoted by the same reference numerals.

The accompanying drawings are included in the specification, constitute a part thereof, show an embodiment of the present invention, and are used to explain the principle of the present invention together with the description.
It is a figure which shows an example of the external appearance structure of the infusion pump with which the infusion tube which concerns on embodiment is fixed. It is a figure which shows an example of the state which opened the door part of the infusion pump which concerns on embodiment. It is a figure explaining mounting | wearing of the infusion tube with an AFF clip to the infusion pump which concerns on embodiment. , , It is a figure explaining the structure of the AFF clip concerning an embodiment. It is a figure explaining the state of the tube clamp in the state which opened the door. It is a figure explaining the state of the tube clamp in the state which opened the door, and the mounting state of the AFF clip. It is a schematic perspective view which shows the state of the tube clamp in the state which opened the door, and the mounting state of the AFF clip. It is a figure explaining the state of a tube clamp and an AFF clip in the state where the door was closed. It is a figure explaining operation of a rotation arm and a release lever.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1. Appearance Configuration FIG. 1 of the infusion pump is a diagram showing an example of the external configuration of the infusion pump 110 according to an embodiment of the present invention.

As shown in FIG. 1, a predetermined drug solution is stored and an infusion bag 101 is connected to the upstream side of the infusion direction of the infusion tube 100, and a clamp 102 and a venous needle 103 are connected to the downstream side of the infusion direction. Is done. And the liquid medicine in the infusion bag 101 is inject | poured into a patient by the said venous needle 103 being pierced by a patient's vein.

The infusion pump 110 includes a door portion 120 attached to a main body (not shown) so as to be openable and closable. On the surface of the door portion 120, a display portion 130 for displaying various information and an operation in which operation switches are arranged. A portion 140 and a door lock lever 150 are arranged.

On the display unit 130, a flow rate display unit 131 that switches between a set value and an actual value of a flow rate (liquid feeding speed) per unit time and displays it, and a scheduled amount integrated amount display that switches between a planned flow rate and an integrated flow rate. Unit 132, an alarm display unit 133 for displaying various alarms, and an occlusion pressure setting display unit 134 for displaying the set level of the occlusion pressure of the infusion tube 100 as "L", "M", and "H". Yes.

In addition, the alarm display unit 133 further reduces the voltage of the bubble detection display unit 135 that is turned on when a bubble in the infusion tube 100 is detected by a bubble detection sensor described later, and the built-in battery of the infusion pump 110. A battery voltage drop display unit 136 that is turned on in this case is arranged. Moreover, the occlusion abnormality display part 137 that is turned on when the occlusion pressure of the infusion tube 100 reaches a set level, the door open state display part 138 that is turned on when the door part 120 is opened, and the infusion is completed. A completion display portion 139 that is turned on in this case is arranged.

On the other hand, the operation unit 140 includes an up / down switch 141 for setting a liquid feeding speed and a scheduled flow rate, and a liquid feeding speed higher than the set liquid feeding speed (mL / h) while being pressed. A liquid supply switch 142 that enables liquid supply is disposed.

In addition, a start switch 144 that starts the infusion by being pressed, a stop switch 143 that forcibly stops the infusion by being pressed, and a power switch for instructing ON / OFF of the power supply of the infusion pump 110 145.

Adjacent to the power switch 145, a power lamp 146 that lights up when a commercial power supply or a DC power supply is used, and a battery lamp 147 that lights up while charging the built-in battery and displays the remaining amount of the built-in battery. And are arranged.

A light emitting diode that emits red and green light is built in the operation indicator 160, and is lit according to the operation state. In other words, it flashes during liquid feeding and fast-forwarding, and when the standby function is working, red and green blink alternately to inform that the infusion can be started immediately.

2. Construction of the door portion rear surface and the main unit front panel Next, the configuration of the door portion 120 the back side of the infusion pump 110 and the configuration of the front panel of the main body 200 will be described.

FIG. 2 is a diagram showing an external configuration of the infusion pump 110 in which the door portion 120 is in an open state. When the door 120 is opened, the front panel 200a of the main body 200 is exposed as shown in FIG. In FIG. 2, reference numeral 201 denotes a door base, which is rotatably connected to the main body base 211 via a hinge portion 202. Thereby, the door part 120 can be opened and closed with respect to the main body part 200.

203 is a door seal rubber, which is formed of an elastomer, and prevents the chemical solution from entering the main body 200 when the door 120 is closed.

Reference numeral 204 denotes a back plate mechanism that supports the back surface of the infusion tube when the infusion tube is pressed by the fingers 214-1 to 214-5 with the door portion 120 closed. Reference numeral 205 denotes a closing presser plate that holds the infusion tube with a closing sensor 215 described later in a state where the door 120 is closed.

On the front panel 200a side, reference numeral 212 denotes a bubble detection sensor. Among bubbles mixed in the infusion tube 100, a predetermined amount (for example, about 0.1 mm) in which the length in the tube becomes a predetermined length (for example, about 10 mm). 08cc) or more is detected. When a bubble is detected by the bubble detection sensor 212, the subsequent operation is forcibly stopped. Further, a tube pressing portion 206 is formed on the side of the door base 201 that faces the bubble detection sensor 212. When the door base 201 is closed, the infusion tube 100 is brought into an immobile state so that accurate bubble detection can be performed. Can be done.

213 is a pump mechanism in which a plurality of fingers 214-1 to 214-5 for sequentially pressing the infusion tube are arranged in the liquid feeding direction.

215 is an occlusion sensor, which is composed of a permanent magnet and a pickup for detecting the amount of movement of the permanent magnet in an analog manner. The occlusion sensor 215 detects the occlusion state by detecting the amount of movement of the permanent magnet that has moved according to the change in internal pressure associated with the occlusion state of the infusion tube 100.

A movable piece 301a and a fixed piece 302 are provided below the occlusion sensor 215, and a tube clamp 300 that is an infusion tube occlusion mechanism is constituted by these. The movable piece 301a is the tip of a rotating arm 301 described later, and the fixed piece 302 is fixed to the front panel. That is, the distal end portion of the rotating arm 301 is exposed as a movable piece 301a from the front panel, and the movable piece 301a moves toward the fixed piece 302, thereby closing the infusion tube 100. Further, below the tube clamp 300, an opening 303 of a clip loading unit for loading an AFF clip described later is provided. The guide 303a functions to guide the AFF clip to the opening 303 when the AFF clip is loaded.

The tube clamp 300 closes (closes) the infusion tube 100 when the door part 120 is in an open state, and prevents the occurrence of free flow. Reference numeral 304 denotes a release lever. When the release lever 304 is operated, the pressing force applied to the clamp by the tube clamp 300 is released (that is, the infusion tube is closed by the movable piece 301a and the fixed piece 302). The

218 is a groove, which defines the position of the infusion tube in the width direction when the infusion tube 100 is fixed to the main body 200. Reference numeral 219 denotes a handle for the user to hold when the infusion pump 110 is carried. The convex portion 410 provided on the door portion 120 applies a force in a direction to release the closed state to the AFF clip loaded in the clip loading portion via the opening 303 in a state where the door portion 120 is closed. To do. These configurations for closing and releasing the infusion tube 100 will be described later.

FIG. 3 is an external perspective view of a state in which the infusion tube 100 is closed using the AFF clip 400 and then loaded into the infusion pump 110, as viewed obliquely from above. In FIG. 3, components that have already been described are denoted by the same reference numerals and description thereof is omitted. In FIG. 3, the AFF clip 400 is provided in the middle of the infusion tube 100, and is set so that the middle is in a closed state.

The door 120 of the infusion pump 110 is opened, the release lever 304 is operated to release the closed state by the tube clamp 300, the infusion tube 100 is set in the groove 218, and the AFF clip 400 is loaded from the opening 303. Subsequently, when the door 120 is closed and the lever 150 is operated and fixed to the main body, the closed state of the tube clamp 300 and the AFF clip 400 is released and the release state is set, and preparation for the start of infusion is completed. Hereinafter, the configuration of the present embodiment in which the tube clamp 300 and the AFF clip 400 are closed or released will be described in detail.

3. Detailed Description of Tube Clamp and Clip Loading Section FIG. 4A is an external perspective view showing an AFF clip 400 after resin injection molding. FIG. 4B is a plan view showing a standby state of the AFF clip 400 shown in FIG. 4A. Further, FIG. 4C is a cross-sectional view after the AFF clip 400 is closed to close the infusion tube 100.

First, in FIG. 4A, the AFF clip 400 is preferably formed of an integral resin from nylon-based polyacetal resin (registered trademark Duracon), which is an engineering plastic that can be repeatedly elastically deformed. In addition, the main base portion 20 that forms one closing portion 21 for closing the infusion tube 100 and the other closing portion 31 that closes the infusion tube 100 are formed, and from the main base portion 20 via the elastic support portion 33. A sub-base portion 34 is integrally formed as shown in the drawing so as to be moved and urged in a natural state in the release direction.

Further, a first extending portion 22 is provided at an end portion of the main base portion 20, and a second extending portion 41 is provided at an end portion of the sub base portion 34. The main base portion 20 and the sub base portion 34 are connected to each other. A locking portion for locking is configured. The locking portion locks the main base portion 20 and the sub-base portion 34 so that the AFF clip 400 maintains either one of the released state as shown in FIG. 4B and the closed state as shown in FIG. 4C. . FIG. 4A shows a state in which the locking portion is completely removed. In this state, the AFF clip 400 can be attached to or removed from the infusion tube 100. In the closed state shown in FIG. 4C, the main base portion 20 and the sub-base portion 34 are in the standby position as shown in FIG. 4B from the closed state by pressing the pressing surface 41a located on the far side from the outer peripheral surface in the direction of arrow F2. The AFF clip 400 is returned to the released state.

Here, the AFF clip 400 is not limited to the above-mentioned resin molded product, and the type of resin used is preferably a type that does not generate toxic gas particularly at the time of incineration, and may be a combination of metal or the like.

As described above, the first elastic support portion 33 is integrally formed from the main base portion 20, and the sub-base portion 34 is further integrally formed continuously thereto. The first elastic support portion 33 is formed in an arc shape or a curved surface so as to be elastically deformable in the direction of the plate thickness, and is formed on the main base portion 20 by applying an external force in the direction of arrow F1 in FIG. 4A. The other closed portion 31 moves toward the closed portion 21 to close the infusion tube 100.

Next, the locking portion described above will be described in more detail. A first extending portion 22 having a predetermined plate thickness is continuously formed from the main base portion 20 as illustrated. On the other hand, a claw-like first locking portion 23 is formed in the first extending portion 22 toward the one closing portion 21.

Further, the arc-shaped second elastic support portion 40 continuously formed from the sub-base portion 34 is extended by being urged to move away from the other closing portion 31 in the natural state. From the end of the second elastic support portion 40, a pair of the first extending portion 22 is inserted in between and a pressing surface 41 a is provided on each outer peripheral surface smaller than the first extending portion 22. The second extending portion 41 is integrally molded. Further, between the pair of second extending portions 41, a second locking portion 43 having an inclined surface and a vertical surface for locking to the first locking portion 23 is integrated for reinforcement. Molded (FIG. 4C).

In addition, the 3rd latching | locking part 24 formed from an inclined surface and a perpendicular surface is formed in the upper and lower surfaces of the 1st extension part 22. As shown in FIG. In addition, a fourth locking portion 44 that is simultaneously locked to the third locking portion 24 formed on the upper and lower surfaces is integrally molded on the opposing surfaces of the pair of second extending portions 41. Yes.

With the above configuration, the sub-base portion 34 is moved by the external force in the direction of the arrow F1, whereby the first locking portion 23 and the second locking portion 43 are locked as shown in FIG. The closed state of the tube 100 is maintained.

On the other hand, the arc-shaped second elastic support portion 40 is moved in the direction of arrow F2 by simultaneously pressing the pair of pressing surfaces 41a in the direction of arrow F2. As a result, the second locking portion 43 is moved in the direction of the arrow F2, and the locked state with the first locking portion 23 is released. Further, the sub-base portion 34 is returned to the position shown in FIG. 4B by the elastic return force of the first elastic support portion 33 before and after this operation, and the third locking portion 24 and the fourth locking portion are restored. It returns to the standby position where the part 44 is locked. Thus, the released state of the infusion tube 100 is maintained.

The AFF clip 400 is in a closed state in which a midway portion of the infusion tube is closed by applying a force in the first direction, and is in a second direction different from the first direction (for example, orthogonal to the first direction). In the release direction in which infusion is possible by application of a force in the direction of movement). Therefore, it goes without saying that the structures, arrangement positions, and the like of the main base portion 20, the sub base portion 34, and the locking portion described above are not limited to the above and can be set as appropriate.

FIG. 5 is a diagram for explaining a configuration example of the rotating arm 301 and the release lever (lever member) 304 in the infusion pump 110 of the present embodiment (a view of the infusion pump 110 viewed from below). FIG. FIG. 6 is a diagram schematically showing a cross section taken along the line X-ray.

The rotation arm 301 is attached so as to be rotatable about a shaft 311 fixed to the base member 312 for the clamp mechanism, and is urged toward the fixed piece 302 by a spring or the like (not shown). When the door part 120 is opened, the urging force causes the turning arm 301 to turn toward the fixed piece 302, whereby the movable part 301 a and the fixed piece 302 that are the front end exposed from the front panel The infusion tube 100 is interposed and closed. The release lever 304 is linked to the rotating arm 301 by the link member 310. As will be described later, a part of the release lever 304 protrudes from the front panel to form a protruding portion, and when the door portion 120 is closed, the protruding portion is pushed by the back side of the door portion 120, Slides. By this slide, the turning force is applied to the rotating arm 301 through the link member 310 in the opening direction opposite to the urging direction to release the closed state of the tube clamp 300.

FIG. 6 is a view of the infusion pump 110 viewed from below, and shows a state in which the AFF clip 400 described above is loaded in the clip loading unit. In the state where the door 120 is opened, the rotating arm 301 is closed with the infusion tube 100 sandwiched between the distal end portion and the fixed piece 302 as described above, and the contact surface 301b is a sub-portion of the AFF clip 400. The base 34 is pressed from the direction of the arrow F1. That is, in this state, the tube clamp 300 composed of the movable piece 301a and the fixed piece 302 closes the infusion tube 100, and the AFF clip 400 also receives the force in the direction of arrow F1 by the contact surface 301b and becomes closed.

FIG. 7 is an external view of the state shown in FIG. 6 viewed from the front panel side. The rotating arm 301 closes the infusion tube 100 between the movable piece 301a at the tip and the fixed piece 302, and the contact surface 301b presses the sub-base portion 34 of the AFF clip 400 so that the AFF clip 400 is in the infusion tube 100. Is closed.

FIG. 8 is a view showing a state in which the door 120 is closed. When the door part 120 is closed, the back side of the door part 120 comes into contact with the release lever 304 and pushes down the release lever 304. The release lever 304 converts the force in the push-down direction (the force in the direction of the arrow F3) into the rotational force in the direction of the arrow F4 with respect to the rotating arm 301 by the link member 310. That is, the lever mechanism constituted by the release lever 304 and the link member 310 causes the pressing force that protrudes from the front panel and is applied to the protruding portion to the release direction (the direction of the arrow F4) opposite to the biasing direction. The turning arm 301 is converted into turning power.

When the turning force in the direction of the arrow F4 received from the release lever 304 overcomes the urging force in the direction of the fixed piece 302 described above, the rotating arm 301 rotates in the direction of arrow F4 (release direction). As a result, the movable piece 301a, which is the tip of the rotating arm 301, is separated from the fixed piece 302, and the contact surface 301b is separated from the sub base 34 of the AFF clip 400 in the closed state. When the movable piece 301a is separated from the fixed piece 302, the closed state of the infusion tube 100 is released, and the infusion tube 100 is released. Further, on the back side of the door portion 120, a convex portion 410 that presses the pair of pressing surfaces 41a of the AFF clip 400 in the direction of the arrow F2 when the door portion 120 is closed is provided. Therefore, when the door portion 120 is closed, the contact surface 301b is separated from the sub-base portion 34 of the closed AFF clip 400, and the pressing surface 41a is pressed in the direction of the arrow F2, so that the AFF clip 400 is closed. Release the state. As a result, the AFF clip 400 enters the released state shown in FIG. 4B.

Thus, when the door part 120 is closed, the closed state of the infusion tube 100 by the tube clamp 300 and the AFF clip 400 is released, and the infusion tube 100 is released. As a result, infusion at a desired speed can be performed by the fingers 214-1 to 214-5 arranged in a plurality in the liquid feeding direction.

FIG. 9 is a view for explaining the turning operation of the turning arm 301 by the link between the turning arm 301 and the release lever 304 described above. The rotating arm 301 is urged in the direction of arrow 901 by a compression coil spring or the like (not shown). Therefore, when no force is applied to the release lever 304, the movable piece 301a, which is the tip of the rotating arm 301, and the fixed piece 302 sandwich the infusion tube 100 to close the infusion tube 100. This state is shown in 9a. When the door part 120 is closed, the release lever 304 receives a force in the direction of the arrow 902 from the back side of the door part 120 as shown in 9b. When the release lever 304 receives a force in the direction of the arrow 902, the link member 310 applies a rotational force in the direction of the arrow 903 to the rotating arm 301 as the release lever 304 moves. When this rotational force exceeds the urging force in the direction of arrow 901, the rotating arm 301 rotates in the direction of arrow 903, and the tube clamp 300 opens the infusion tube 100 as shown in 9c.

As described above, according to the above-described embodiment, the part of the movable piece 301a constituting the tube clamp 300 and the contact surface 301b for closing the AFF clip 400 are provided on one rotating arm 301. ing. Thereby, by controlling the rotation of one rotating arm 301, the tube clamp 300 and the AFF clip 400 can be used together, and the closed state and the released state of the tube clamp 300 and the AFF clip 400 can be controlled. It has become possible. That is, it is possible to provide an infusion pump that closes and releases the tube clamp 300 and the AFF clip 400 with a simpler mechanism, contributing to a reduction in the number of parts of the infusion pump, miniaturization, and cost reduction.

In the above description, the configuration in which the tube clamp 300 is disposed upstream of the AFF clip loading unit with respect to the liquid feeding direction has been described. However, the tube clamp 300 is positioned downstream of the AFF clip loading unit. May be.

The present invention is not limited to the above embodiment, and various changes and modifications can be made without departing from the spirit and scope of the present invention. Therefore, in order to make the scope of the present invention public, the following claims are attached.

This application claims priority on the basis of Japanese Patent Application No. 2010-081371 filed on Mar. 31, 2010, the entire contents of which are incorporated herein by reference.

Claims

An infusion pump that holds an infusion tube between the door and the front panel of the main body and performs infusion by sequentially pressing the tube.
Loaded with a clip that is in a closed state in which a part of the infusion tube is closed by application of a force in the first direction, and in a release state in which infusion is possible by application of a force in a second direction different from the first direction Clip loading means to
The infusion tube is provided in the main body so as to be rotatable so that the front end portion is exposed from the front panel, and is urged in the direction of the fixed piece fixed to the front panel. A rotating arm that closes across
A part protrudes from the front panel to form a protrusion, and the pressing force applied to the protrusion is converted into a rotational force that rotates the rotating arm in a release direction opposite to the biasing direction. And a lever member for releasing the closed state by the rotating arm,
The rotating arm has a contact surface in contact with the clip loaded in the clip loading means, and the contact is made in a state where the distal end portion of the rotating arm and the fixed piece block the infusion tube. Applying a force in the first direction to the clip through a surface to close the clip;
When the door is in a closed state, the door applies the pressing force to the lever member, whereby the rotating arm is rotated in the releasing direction to release the closed state by the tip portion and the contact. An infusion pump, wherein a surface is separated from the clip in a closed state, and the door further applies a force in the second direction to the clip to release the closed state of the clip.
The clip forms a main base portion that forms one closing portion that closes the infusion tube and the other closing portion that closes the infusion tube, and moves from the main base portion to a standby position via an elastic support portion. A sub-base extending so as to be urged, and the sub-base is pressed in the first direction to lock the main base and the sub-base, which are in the closed state. And a locking portion that is returned to the standby position by being pressed in the second direction and brought into the released state.
The infusion pump according to claim 1, wherein the contact surface of the rotating arm presses the sub-base portion in the first direction.
3. The infusion according to claim 1, wherein the clip loading unit is provided on an upstream side with respect to a liquid feeding direction with respect to a clamp portion configured by the rotating arm and the fixed piece. pump.
3. The infusion according to claim 1, wherein the clip loading unit is provided on a downstream side with respect to a liquid feeding direction with respect to a clamp portion constituted by the rotating arm and the fixed piece. pump.