JP3140940U - Enteral infusion pump - Google Patents

Abstract

Providing a peristaltic enteral infusion pump excellent in safety that can prevent misuse of a peristaltic enteral infusion pump having the same operating principle as a peristaltic intravenous infusion pump.
When loading an enteral infusion tube 101, an erroneous loading prevention means for preventing erroneous loading of an intravenous infusion tube of an infusion set for intravenous administration by actively notifying that it is an enteral infusion pump 1 Is provided.
[Selection] Figure 2

Description

  The present invention relates to an enteral infusion pump, and more particularly to a peristaltic enteral infusion pump excellent in safety and preventing misuse.

  The present applicant has put into practical use a peristaltic infusion pump that delivers liquid by pressing the outer peripheral surface of the infusion tube in the longitudinal direction to give peristaltic motion. In particular, we propose a peristaltic infusion pump that ensures safety by preventing the door from closing if the infusion tube is not properly loaded when the infusion tube is loaded into this peristaltic infusion pump. (Patent Document 1).

  In addition, the applicant of the present application has provided a dedicated clamp for closing the intermediate portion of the infusion tube, and after inserting the dedicated clamp into the dedicated clamp housing part of the peristaltic infusion pump, the application is interlocked with the operation of closing the door. It is configured so that the liquid can be sent by releasing the block of the dedicated clamp, and the infusion tube can be closed again in conjunction with the operation of taking out the dedicated clamp that opens the door to the outside. A peristaltic infusion pump has been proposed (Patent Document 2).

Further, the applicant of the present application drives the infusion solution by completely crushing each finger of the peristaltic mechanism built in the peristaltic infusion pump only on the upstream side and the downstream side and not in the middle part completely. There has been proposed a peristaltic infusion pump that eliminates the influence of the thickness of the tube and enables liquid feeding with high accuracy (Patent Document 3).
JP 2002-58738 A JP 2006-115914 A Japanese Patent Laid-Open No. 09-151856

  Each of the peristaltic infusion pumps described above is designed to perform intravenous administration for administering various drug solutions to the vein after the puncture needle is punctured into the vein. For this reason, it is configured so that bubbles can be prevented from entering the vein during intravenous administration by setting a high detection standard for the bubbles mixed in the liquid feeding.

  On the other hand, at present, roller-type infusion pumps are mainly used as enteral infusion pumps for enteral administration in which nutrients and liquid foods are directly fed into the gastrointestinal tract. Usually, nutrients and liquid foods have high viscosity, and air is frequently mixed during liquid feeding. Therefore, according to this type of enteral infusion pump, mixing of bubbles in the liquid feeding is a particular problem. do not become. Therefore, in the enteral infusion pump, the detection standard for detecting bubbles is set low.

  Peristaltic infusion pumps designed for intravenous administration as described above are widely used because of their high safety and reliability. Moreover, since the above-mentioned roller-type infusion pump differs greatly from the peristaltic infusion pump in the method of setting the infusion tube, there is a high demand for using the peristaltic infusion pump as an enteral infusion pump.

  However, when intravenous administration and enteral administration are mistaken and an infusion set for intravenous administration is set and used in a peristaltic infusion pump for enteral administration, the detection standard for bubble detection is set low, Increased risk of air bubbles. Therefore, peristaltic infusion pumps for enteral administration are designed to be used exclusively for enteral administration so that they cannot be used even if an infusion set for intravenous administration is set to prevent misuse.

  Therefore, the present invention has been made in view of the above circumstances, and can safely prevent misuse of a peristaltic enteral infusion pump having the same operation principle as a peristaltic infusion pump for intravenous administration. The purpose is to provide an excellent peristaltic enteral infusion pump.

  In order to solve the above-described problems, according to the present invention, an apparatus main body incorporating a peristaltic mechanism for peristally moving a plurality of fingers, and opening and closing between a locking position and a locking release position with respect to the apparatus main body. A door member that can be provided, and a pressing plate disposed on the inner surface of the door member so as to sandwich the enteral infusion tube of the infusion set for enteral administration between the peristaltic mechanism part, A peristaltic enteral infusion pump that performs liquid feeding by pressing the outer peripheral surface of the enteral transfusion tube in the longitudinal direction by the pressing plate and each of the plurality of fingers to give a peristaltic movement, Is set lower than the peristaltic infusion pump using an intravenous infusion set, and when the enteral infusion tube is loaded, it is positively determined that it is an enteral infusion pump. By informing, Serial loading errors preventing means for preventing erroneous loading of venous infusion tubing for intravenous administration infusion set is characterized by comprising.

  The enteral infusion tube may further comprise safety means for preventing the door member from being in the locking position unless the enteral infusion tube is properly loaded between the pressing plate and the plurality of fingers. .

  Further, the enteral infusion tube is provided with a dedicated clamp that closes a part of the tube, and after the dedicated clamp is inserted into the dedicated clamp housing portion disposed in the apparatus main body, the door member is closed. In conjunction with this, it is possible to release the block of the dedicated clamp and to supply a chemical solution, and also block the enteral infusion tube again in conjunction with the operation of opening the door member and taking out the dedicated clamp to the outside. It is characterized by being able to be in a state to do.

  Each of the fingers is driven so as to crush the enteral infusion tube on the upstream side and sequentially crush it toward the downstream side.

  Further, the erroneous loading preventing means includes a scheduled amount setting unit, a flow rate setting unit, an integrated amount display unit, a scheduled amount / flow rate / integrated amount display unit, and a backlight unit disposed on the surface of the door member. In addition, the backlight unit displays the enteral infusion pump by lighting and blinking.

  The erroneous loading prevention means includes a housing having a color and shape different from that of the peristaltic venous infusion pump, a handle having a shape different from that of the peristaltic venous infusion pump, and a delivery different from that of the peristaltic venous infusion pump. It is characterized by including at least one of an electronic sound during liquid operation and an audio guide for generating a peristaltic enteral infusion pump.

  According to the present invention, it is possible to prevent erroneous use of a peristaltic enteral infusion pump having the same operation principle as that of a peristaltic intravenous infusion pump for intravenous administration by providing an erroneous loading prevention means. An excellent peristaltic enteral infusion pump can be provided.

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

  FIG. 1A is an external perspective view showing an infusion set 100 for enteral administration together with a dedicated container 110. FIG. 1B is an external perspective view showing an infusion set 200 for intravenous administration together with an infusion bag 210. As shown in the figure, the infusion set 200 for intravenous administration by mixing intravenous administration and enteral administration is replaced with a peristaltic enteral infusion pump (enteral nutrition pump) for enteral administration according to the present invention. When set and used, the peristaltic enteral infusion pump sets the detection standard for air bubble detection to a low level, which increases the risk of air bubble contamination. Therefore, the peristaltic infusion pump for enteral administration is designed exclusively for enteral administration so that it cannot be used even if an infusion set for intravenous administration is set, and the enteral infusion tube is JIS standard (JIS T3213: 2005 Based on the nutrition tube and catheter), the shape of the connector of the infusion set 102 and 202, 104 and 205 used for each administration is designed exclusively for intravenous administration and enteral administration to prevent misuse. At the same time, it aims for hygiene safety.

  Specifically, the infusion sets 100 and 200 are folded and stored and sealed in a sterilized transparent bag (not shown). In particular, the infusion set 200 for intravenous administration is manufactured by strictly controlling the external dimensions, thickness, material, hardness, etc. so as to guarantee the accuracy of liquid feeding when used in a peristaltic intravenous infusion pump. A transparent vinyl intravenous tube 201 having a length of about 2 m and an outer shape of about 5 mm is used.

  A transparent resin drip tube 202 is connected to the upper end of the intravenous infusion tube 201, and a rubber plug portion of an infusion bag 210 in which a bottle needle 202a of the drip tube 202 is suspended from a pole of an infusion stand (not shown). By puncturing, the liquid medicine in the infusion bag 210 can be sent. A connector 205 is connected to the lower end of the venous infusion tube 201 in order to connect a puncture needle 206 punctured into a vein. In addition, a dedicated clamp 203 is set in advance in the middle of the intravenous infusion tube 201, and a roller clamp 204 is further set below the clamp.

  The bottle needle and the connector 205 are covered with a cap (not shown) so that the sterilized state can be maintained and each cap can be removed during use, and the puncture needle 206 can be set to the connector 205 after the cap is removed. Have been prepared. The roller clamp 204 is made of a resin having a substantially square cross section, and is rotatably supported by left and right grooves partially drilled in the left and right walls after inserting the intravenous infusion tube 201 as shown in the figure. A roller is provided. When this roller is rotationally moved from the illustrated position in the direction of the arrow, the distance between the tube 201 and the outer peripheral surface of the roller is reduced, and the roller is finally closed. Therefore, the roller clamp 204 is set to the open position after the start of feeding and is set to the closed position after the end of feeding.

  Next, the infusion set 100 for enteral administration is used by being connected to a dedicated container 110 containing a liquid food or the like. A transparent vinyl enteral infusion tube 101 having a length of about 2 m and an outer shape of about 5 mm manufactured to the same outer dimensions, thickness, material, and hardness as the above-mentioned intravenous infusion tube 201 is used.

  A rubber plug 102 is connected to the upper end of the enteral infusion tube 101, and this rubber plug 102 is connected to a drain plug 110a of a dedicated container 110 suspended from a pole of an infusion stand (not shown). As described above, liquid feed, nutrient drinks, and the like in the dedicated container 110 can be fed. A connector made of an elastic member is connected to the lower end of the enteral infusion tube 101 so as to connect to the connector 106a of the introduction tube 106 having a full length reaching the gastrointestinal tract after being inserted into the nasal cavity or the like of the patient lying on the bed. 104 is connected. Furthermore, an exclusive clamp 103 made of, for example, a yellow resin material having a shape different from that of the dedicated clamp 203 and a color different from orange is set in the middle of the enteral infusion tube 101 in advance. Has been.

  Next, FIG. 2 (a) is a front view of a peristaltic enteral infusion pump 1 (hereinafter also referred to as pump 1) according to an embodiment of the present invention. FIG. 2B is an enlarged view of the display unit 40. In this figure, the pump 1 has a configuration based on the above-mentioned Japanese Patent Application Laid-Open No. 2002-58738 or Japanese Patent Application Laid-Open No. 2006-115914 by the applicant of the present application. By setting, it is in a state where the liquid medicine is fed (infusion tube is opened). Moreover, the safety means which can prevent the door member 2 from closing if the enteral infusion tube 101 is not correct is provided.

  This peristaltic enteral infusion pump 1 feeds the high-viscosity liquid food of the enteral infusion tube 101 by crushing the enteral infusion tube 101 on the upstream side with each finger described later and sequentially crushing toward the downstream side. It is configured to be able to.

  In addition, the peristaltic enteral infusion pump 1 is configured to set a flow rate, a predetermined amount, and the like by operating each switch arranged in the operation unit 50. Further, as shown in FIG. 2 (b), a clogging alarm display informing that a clogging abnormality of the infusion tube is detected and normal liquid feeding cannot be performed, and the door member 2 of the pump 1 is completely closed with respect to the apparatus main body. Built-in door open display to detect and notify the status when there is no air switch, built-in air liquid alarm display to notify when air bubbles longer than a predetermined length (about 120mm) are mixed in the enteral infusion tube 101 A battery alarm display that informs when the battery voltage drops, a clip check display that informs the state that the dedicated clamp is not properly set, and the like are performed on the display unit 40 including pictographs. The display unit 40 is further provided with a blockage setting pressure display unit 41 and blockage position display units 42 and 43 for displaying the blockage degree in three stages.

  Below the display unit 40, a scheduled amount setting switch 51, a flow rate setting switch 52, a fast-forward switch 53, a power switch 54, a stop / mute switch 55, an infusion start switch 56, and an up / down switch are within a range surrounded by separate frame printing. 59 and 60 are provided. By pressing the up / down button of the up / down switch, it can be set in the range of 1 to 999 mL, programmed to be set in 1 mL units or set free, and configured to store the set value Has been.

  Further, a scheduled amount setting switch 62 is provided on the left side of the scheduled amount setting display section 62 for performing setting / confirmation by being pressed before and after setting the scheduled amount. A flow rate display unit 63 is provided below the planned amount setting display unit 62. These display units use LED elements so that they can be seen without illumination even at night or in a dark room. Next to the power switch 54, there are provided a lamp 57 for displaying whether the external power source or the internal power source is used with different color illumination, and a lamp 58 for displaying the consumption degree of the built-in battery in different lengths. . Furthermore, “enteral-only” is printed above the scheduled amount setting display section 62, and it is configured such that characters can be irradiated from the back side by a backlight built in the back side.

  On the other hand, the door member 2 is provided with a light orange resin door cover 8 having the same color as that of the main body of the apparatus, and the upper portion of the door cover 8 is formed to protrude in a convex shape in order to display an infusion operation. A large operation indicator 30 is provided. A light emitting diode that emits red and green light is built in the operation indicator 30 and is lit according to the operation state of the pump 1. That is, it blinks during liquid feeding and fast-forwarding, and when the standby function is working, red and green blink alternately to inform the user that liquid feeding can be started immediately. Further, when the infusion tube 101 is loaded, it is possible to positively display that it is for enteral use by alternately turning on the backlight built in the back side of the “enteral use only”. The door member 2 is opened and closed by operating the door lock lever 5.

  FIG. 3 is an external perspective view after the door member 2 is opened. In this figure, the same reference numerals are given to the components or parts that have already been described, and the description thereof is omitted. The main body decorative cover 7 is made of light orange resin, and a gripping part that is gripped when being carried will be described later. Are integrally molded. As shown in the figure, the main body base 3 is integrally formed with grooves formed in the upper and lower parts at the center in the width direction, and the infusion tube 101 is set in these grooves.

  Further, a pump mechanism 10 having a peristaltic mechanism configured to be detachable by removing a total of four screws with a Phillips screwdriver is provided between these groove portions. When the pump mechanism 10 is contaminated with a chemical solution or the like, and the movement of each finger 10f becomes worse, the pump mechanism 10 is removed from the main body base 3 and washed with a predetermined detergent, so that the chemical solution is washed away and the movement is normal. Designed to return. For this purpose, each finger 10f provided in the pump mechanism 10 is injection-molded from a thermoplastic resin such as a polyacetal resin material having excellent chemical resistance and chemical properties.

  A pair of jaws 3a and 3b projecting forward in the drawing are integrally formed below the main body base 3, and the door decorative cover is placed on each jaw when the door member 2 provided with the door decorative cover is closed. The lower side of the door is positioned so that it can receive external force when any shocking external force is applied, and the door decorative cover and the door member 2 can be prevented from being damaged by applying no external force. ing. Further, from the left and right sides of the main body base 3, a flange portion 3 f is formed so as to project a finger when the above switches are pressed.

  In addition, a hook 6 is fixed to the middle right side of the main body base 3, and a locking portion 5 a of a door lock lever 5 that is rotatably provided in the door member 2 is locked to the hook 6. The door member 2 can be maintained in a fixed state with respect to the apparatus main body.

  In addition, a door seal rubber formed of an elastomer is disposed opposite to the most upstream side of the groove, and when the door member 2 is closed, the door base rubber is deformed so as to form a joint seal surface. This prevents liquid food from entering inside.

  A bubble sensor 13 is disposed below the groove. The bubble sensor 11 detects a bubble mixed in the infusion tube 101 within a predetermined amount (for example, about 1 cc) having a predetermined length (for example, about 120 mm) in the tube. Forcibly stop the subsequent operations. A tube pressing portion 12 is provided on the door side at a position facing the bubble sensor 11 which is the bubble detecting portion. When the door member 2 is closed, the infusion tube 101 is pressed to be in an immobile state. Bubble detection.

  A blockage sensor 13 is disposed below the bubble sensor, and a gimbal-type blockage presser plate 14 disposed on the door member 2 is disposed opposite to the blockage sensor 13. With the above configuration, the infusion tube 101 is sandwiched in the front-rear direction of the paper surface. The closure sensor 13 is composed of a permanent magnet and a pickup for detecting the movement position of the permanent magnet in an analog manner, and the position of the permanent magnet that moves according to the change in the internal pressure caused by the closed state of the infusion tube 101. Is configured to detect. For this reason, the closing presser plate 14 needs to prevent the change in internal pressure of the infusion tube 101 in all directions, so that the illustrated disk is held so as to be freely movable at the end of the spring plate (elastic member). Is done.

  On the other hand, the operating principle of the pump mechanism 10 is that the attached infusion tube 101 is sandwiched and pressed between each finger 10f and the pressing plate 19 and continuously supplied at a set flow rate per time. For this reason, a motor rotation signal is generated from information stored in a microcomputer (CPU), the motor is rotated by this rotation signal, the pump is driven, and the flow rate of liquid feeding is adjusted. Each finger 10f is reciprocally driven from the upstream side in the front-rear direction of the paper surface in the pump base, as shown in the drawing, the first finger, the second finger, the third finger, the fourth finger, the fifth finger,. Built in.

  As shown in the figure, the tip shape of each finger is rounded so that it can be completely crushed. In addition, each finger 10f can reliably transmit the peristaltic motion by crushing the infusion tube 101 on the upstream side and sequentially crushing it toward the downstream side.

  The door member 2 is configured to open toward the left side by a pair of upper and lower hinge blocks 4 with respect to the main body base 3, and energizing the display unit, the key panel operation unit, the operation indicator, and the like described above, The flexible cable is strong against repeated bending. A pressing plate 19 facing the pump mechanism 10 is disposed at a substantially central portion inside the door member 2 via a buffer plate mechanism. This buffer plate mechanism is provided so as to face each finger of the pump mechanism 10 to form a receiving surface for pressing action by the finger. For this reason, it is provided so as to move in the front-rear direction of the paper surface, and has a function of preventing damage to the infusion tube 101 by retreating toward the back surface side of the paper surface when some overload occurs.

  Below the pump mechanism 10, a closing sensor 15 and a closing presser plate 16 corresponding to the closing sensor 15 are arranged so as to detect a closed state after being sent out by a peristaltic motion. A dedicated clamp storage portion 17 for storing a dedicated clamp is disposed below the block sensor 15. After inserting the dedicated clamp 103 (see FIG. 1 (a)) into the storage portion 17, the exclusive clamp 103 is released from closing in conjunction with the operation of closing the door member 2, so It can be in a state where liquid feeding is performed. In addition, the door member 2 is opened, and the enteral infusion tube 101 is closed again (in the closed state of the tube) in conjunction with the operation of taking out the dedicated clamp 103 to the outside.

  Next, FIG. 4 is a right side view of the pump 1. In this figure, the same reference numerals are given to the components or parts already described, and the description thereof is omitted. The decorative cover 7 is integrally formed with a gripping portion 7k shown by a broken line continuous from the opening 7a. The gripping portion 7k is provided with a protrusion 7j so that it can be carried by putting a fingertip therein. Since the shape of the grip portion is significantly different from that of a peristaltic infusion pump for intravenous administration, the user can easily notice it. Further, four rubber feet 9 are fixed to the bottom surface of the pump 1 to enable use in a state where the pump 1 is placed on a table.

  Finally, FIG. 5A is a rear view of the pump 1. In this figure, components and components that have already been described are denoted by the same reference numerals and description thereof is omitted, and “dedicated for enteral use” is also displayed below the nurse call connector 21, and the power connector 23 When the power cable is inserted into the device, it is possible to inform that it is different from the peristaltic venous infusion pump. FIG. 5B is a bottom view of the pump 1, and a metal screw plate 25 is fixed to the bottom surface of the decorative cover 7 with screws 28. A female screw portion 25 of a fixing knob when the pump 1 is used while being fixed to an infusion stand is press-fitted and fixed to the screw plate 25.

  As described above, since the cover 7 which is a housing of a different color and shape of light orange different from the off-white peristaltic intravenous infusion pump and the handle 7k having a different shape are provided, misuse can be prevented. Also, during operation, attention is urged by generating a pyropyro that is an electronic sound during a liquid feeding operation different from the peristaltic intravenous infusion pump. Further, the peristaltic enteral infusion pump is used as an audio guide when the infusion tube is set, so that attention is urged.

  Needless to say, design changes and the like within the scope of the present invention are included in the present invention.

(a) is the external appearance perspective view which illustrated the infusion set 100 for enteral administration with the exclusive container 110. FIG. (b) is the external appearance perspective view which illustrated the infusion set 200 for intravenous administration with the infusion bag 210. FIG. (a) is a front view of the peristaltic enteral infusion pump 1, and (b) is an enlarged view of the display unit 40. It is the external appearance perspective view which illustrated the state after opening the door member 2 of the peristaltic enteral infusion pump 1. FIG. It is a right view of the peristaltic enteral infusion pump 1. (a) is a rear view of the peristaltic enteral infusion pump 1, and (b) is a bottom view.

Explanation of symbols

1 Peristaltic enteral infusion pump 2 Door member 7 Body cover (incorrect loading prevention means)
7k handle (incorrect loading prevention means)
8 Cosmetic cover (incorrect loading prevention means)
10 pump mechanism 30 operation indicator

Claims (6)

An apparatus main body with built-in peristaltic mechanism means for driving the plurality of fingers so as to perform peristaltic movement;
A door member that can be opened and closed between a locking position and a locking release position with respect to the surface of the device body;
A pressure plate disposed on the inner surface of the door member for sandwiching the enteral infusion tube of the infusion set for enteral administration with the peristaltic mechanism means,
A peristaltic enteral infusion pump that performs liquid feeding by pressing the outer peripheral surface of the enteral infusion tube in the longitudinal direction with the pressing plate and each of the plurality of fingers,
While setting the detection standard of bubbles mixed in the liquid delivery lower than the peristaltic intravenous infusion pump using the intravenous infusion set,
When loading the enteral infusion tube, it is provided with erroneous loading prevention means for preventing erroneous loading of the intravenous infusion tube of the infusion set for intravenous administration by actively notifying that it is an enteral infusion pump. Enteral infusion pump characterized by. If the enteral infusion tube is not correctly loaded between the pressing plate and each of the plurality of fingers, safety means for preventing the door member from being held in the locking position,
The enteral infusion pump according to claim 1, further comprising: The enteral infusion tube is equipped with a dedicated clamp for closing the middle part of the tube,
After the dedicated clamp is inserted into the dedicated clamp storage portion disposed on the surface of the apparatus main body, in conjunction with the operation of closing the door member, the blocking of the dedicated clamp is released, and the chemical solution is fed. Can be put into a state where
The enteral infusion pump according to claim 1 or 2, wherein the enteral infusion tube can be closed again in conjunction with an operation of taking out the dedicated clamp for opening the door member to the outside.   The enteral device according to any one of claims 1 to 3, wherein each of the plurality of fingers is driven so as to crush the enteral infusion tube on the upstream side and sequentially crush it toward the downstream side. Infusion pump.   The erroneous loading prevention means includes a scheduled amount setting unit disposed on the surface of the door member, a flow rate setting unit, an integrated amount display unit, a backlight unit provided together with the planned amount / flow rate / integrated amount display unit, The enteral infusion pump according to any one of claims 1 to 4, wherein the backlight unit is always lit and blinked to indicate that the enteral infusion pump is used.   The erroneous loading preventing means includes a housing having a color and shape different from those of the enteral infusion pump, a handle having a shape different from that of the enteral infusion pump, and an electronic device that is performing a liquid feeding operation different from the enteral infusion pump. The enteral infusion pump according to any one of claims 1 to 5, comprising at least one of a sound and an audio guide that generates an enteral infusion pump.

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