JP2016158932A - Expression apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an expression apparatus capable of expressing a content from a flexible container at a predetermined extraction speed.SOLUTION: The expression apparatus moves pressing means 3 from an end in the opposite side of an extraction port 7 of a nutrient bag 6 toward the extraction port 7 by drive of driving means 4. This configuration can express a semisolid enteral nutrient (the content) from the nutrient bag 6 (a flexible container) on support means 2 at a predetermined extraction speed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an extruding device that extrudes contents from a flexible container.

  For example, Patent Document 1 includes a pair of rollers that rotate reversely by rotating a handle, and squeezes a medical fluid such as a nutrient from a flexible container sandwiched between the pair of rollers. A configured supply apparatus is disclosed. By the way, in a treatment (so-called gastrostomy) in which a nutrient or a pharmaceutical is administered directly from the abdominal cavity of a patient, it is necessary to manage the administration rate of the semi-solid nutrient. That is, it is necessary to pump out the semi-solid nutrient from the nutrient container at a predetermined pouring rate (flow rate). Here, in order to press the semi-solid nutrient from the nutrient container at a constant dispensing speed using the supply device described in Patent Document 1, it is required to rotate the handle at a constant speed. .

  However, since the supply device described in Patent Document 1 manually rotates the handle, it is difficult to manage the administration rate of the semi-solid nutrient, and in addition, the burden on the person who operates the handle is large. Furthermore, the supply device described in Patent Document 1 connects the nutrient container and the catheter because the nutrient container is drawn between the pair of rollers, that is, the nutrient container moves as the rollers rotate. It is necessary to set the length of the tube longer by the moving distance of the nutrient container. For this reason, the amount of the semi-solid nutrient remaining in the tube when the administration is completed increases, that is, the semi-solid nutrient that is wasted increases.

JP 2010-5287 A

  Then, this invention was made | formed in view of the said situation, and it was made as a subject to provide the extruding device which can extrude the contents from a flexible container at the predetermined | prescribed extraction speed | rate. Is.

  In order to solve the above-described problem, the pressurization device of the present invention is a device for extruding contents from a flexible container, and presses the flexible container supported by the support means and the support means. And pressing means for driving the pressing means toward the spout of the flexible container.

  According to the present invention, the contents can be discharged from the flexible container at a predetermined pouring speed.

It is a conceptual diagram explaining the principle of this invention. It is a perspective view of the pressure-extraction apparatus in 1st Embodiment, Comprising: It is a figure which shows the state in which a cover body is especially located in a closed position. FIG. 3 is a right side view of the extruding device according to the first embodiment, in particular, a diagram omitting a housing in a state where a lid body is located at an open position. It is explanatory drawing of 1st Embodiment, Comprising: It is a perspective view for demonstrating especially a drive means and a guide means. It is an enlarged view of the rear-end part in FIG. FIG. 3 is a right side view of the press-out device according to the first embodiment, particularly a perspective view of a rear end portion of the press-out device. It is a perspective view of the pressure-extraction apparatus in 1st Embodiment, Comprising: It is a figure which shows the state in which a cover body is especially located in an open position. It is a block diagram of the extrusion apparatus in 1st Embodiment. It is a flowchart of the extrusion apparatus in 1st Embodiment. It is a right view which excluded the housing of the press-out device in a 1st embodiment, and is a figure showing the state where a roller is especially located in a retreat end position. It is a right view which excluded the housing of the pressurization apparatus in a 1st embodiment, and is a figure showing the state where a roller is especially located in the middle position between a back end position and a forward end position. It is a right view which excluded the housing of the pressurizing device in a 1st embodiment, and is a figure showing the state where a roller is especially located in an advance end position. It is a perspective view of the pressure-extraction apparatus in 2nd Embodiment, Comprising: It is the figure which excluded the cover body especially. It is a perspective view for demonstrating the press means and guide means in 2nd Embodiment, and is an enlarged view of a rear-end part especially. It is explanatory drawing of 2nd Embodiment, Comprising: It is a perspective view for demonstrating especially an interlocking | linkage means. It is explanatory drawing of 2nd Embodiment, Comprising: In particular, it is a figure which shows the state which the cam follower of the driven part of the interlocking means contact | abutted to the rail provided in the cover body. It is a figure which shows the state which mounted | wore the nutrient solution bag with the bag adapter. It is a perspective view which shows the state which set the nutrient bag with which the bag adapter was mounted | worn to the pressing-out apparatus.

(First embodiment)
A first embodiment of the present invention will be described with reference to the accompanying drawings. Here, although the aspect at the time of applying the expression apparatus 1 to the extraction apparatus used by the treatment which administers a nutrient or a pharmaceutical directly from a patient's abdominal cavity is illustrated, it aims at limiting an application. Absent.
In the following description, for convenience, the X-axis direction of the coordinate system in FIG. 2 is defined as “left-right direction”, the Y-axis direction is defined as “front-rear direction”, and the Z-axis direction is defined as “up-down direction”. It is not intended to limit the direction of use of 1.

  FIG. 1 is a conceptual diagram illustrating the principle of the present invention. As shown in FIG. 1, the pressing device 1 includes a support means 2 that supports a nutrient bag 6 (flexible container), and a pressing means 3 that presses the nutrient bag 6 set on the support means 2. Driving means 4 for driving the pressing means 3 toward the spout 7 of the nutrient bag 6. And the press-out device 1 which concerns on 1st Embodiment moves the press means 3 to the left direction in FIG. 1 by the drive of the drive means 4, ie, from the end on the opposite side to the spout 7 of the nutrient bag 6 The pressing means 3 is moved toward the spout 7. Thereby, the enteral nutrient (content) semi-solidified from the nutrient bag 6 on the support means 2 is squeezed out at a predetermined dispensing rate.

(Supporting means)
As shown in FIG. 3, the support means 2 is configured by a support base 9 assembled to a chassis 8 that is a sheet metal member. The support base 9 is a sheet metal member extending in the front-rear direction (left-right direction in FIG. 3), and each attachment piece (not shown) formed at the front end and the rear end is fixed to the chassis 8. In addition, the width | variety of the left-right direction of the support stand 9 is set larger than the width | variety of the nutrient bag 6 assumed. Further, the chassis 8 and the support base 9 may be plastic members in addition to sheet metal members.

(Pressing means)
As shown in FIG. 6, the pressing means 3 is constituted by a roller 10. The roller 10 includes, for example, a main body portion 11 formed of resin, and a metal shaft portion 12 whose both ends are rotatably supported by a carriage 21 described later. The roller 10 is provided so as to cross over the support base 9. That is, the roller 10 is disposed such that the axis (rotary axis) extends in the left-right direction. Further, the roller 10 is arranged so that a predetermined gap is formed between the roller 10 and the support base 9. A bearing 13 (see FIG. 6) is provided between the carriage 21 and each shaft portion 12 of the roller 10 to enhance the slidability of the roller 10.

(Guidance means)
As shown in FIGS. 4 to 6, the extruding device 1 includes guide means 5 that guides the movement of the pressing means 3, that is, guides the roller 10 in the front-rear direction. The guide means 5 includes the carriage 21 described above, a guide shaft 22 that guides the movement of the carriage 21 in the front-rear direction, and a lead screw mechanism. The carriage 21 is disposed below the support base 9 and extends in the left-right direction, and a pair of walls disposed so as to extend upward from both left and right ends of the main body 23 and face each other. Parts 24L and 24R. The guide shaft 22 is installed between the front side wall 14 and the rear side wall 15 of the chassis 8. That is, the guide shaft 22 is disposed so as to extend in the front-rear direction. The guide shaft 22 regulates the vertical movement of the carriage 21 and is slidably inserted into a through hole (not shown) formed in the main body 23 of the carriage 21. The through-hole is a long hole whose dimension in the left-right direction is wider than the vertical direction. When the screw shaft 26 and the guide shaft 22 are inserted into the carriage, a dimensional error is absorbed on the through-hole side of the guide shaft 22 and the screw shaft The play between the carriage 26 and the carriage 21 is minimized.
A bush may be used instead of the long hole. Further, since the carriage 21 has a two-part configuration, it can be easily assembled even if the bearing 13 is provided.

  The lead screw mechanism includes a screw shaft 26 disposed in parallel to the guide shaft 22 and a ball nut 27 that is fixed to the main body portion 23 of the carriage 21 and to which the screw shaft 26 is screwed. The front end of the screw shaft 26 is rotatably supported by the front side wall 14 of the chassis 8, and the rear end is rotatably supported by the rear side wall 15 of the chassis 8. As understood by those skilled in the art, the lead screw mechanism converts the rotational motion of the screw shaft 26 into linear motion in the longitudinal direction of the carriage 21. That is, when the screw shaft 26 is rotationally driven by the driving means 4, the carriage 21 moves forward or backward. A bearing (not shown) is provided between both ends of the screw shaft 26 and the front side wall 14 and the rear side wall 15 of the chassis 8.

  The guide unit 5 includes a posture stabilization mechanism that ensures the straight-running stability of the carriage 21, that is, suppresses the rotation operation (swing) of the carriage 21 around the vertical line. The posture stabilization mechanism includes racks 28 </ b> L and 28 </ b> R that are provided on the chassis 8 and are disposed in pairs on the left and right sides of the carriage 21. The pair of racks 28 </ b> L and 28 </ b> R are disposed parallel to the guide shaft 22 with teeth arranged upward. The posture stabilization mechanism includes a pair of pinions 29L and 29R engaged with the corresponding racks 28L and 28R. Further, the posture stabilization mechanism includes a shaft 30 that extends along the left-right direction and is rotatably supported by the pair of wall portions 24L and 24R of the carriage 21. Each pinion 29L, 29R is fixed to each end portion of the shaft 30, in other words, a portion protruding outward from each wall portion 24L, 24R at both ends of the shaft 30.

  A bearing (not shown) is provided between the shaft 30 and the pinion 29L and between the shaft 30 and the wall portion 24R of the carriage 21. As a result, even if there is a positional shift between the racks 28L and 28R and the phase of the tooth portion between the racks 28L and 28R does not completely match, the pinions 29L and 29R can rotate smoothly, and the carriage 21 It is possible to assist the stability of progress. A bearing (not shown) may be provided between the shaft 30 and the pinion 29R, and between the shaft 30 and the wall portion 24L of the carriage 21.

(Driving means)
As shown in FIGS. 5 and 6, the driving means 4 includes a motor 31 that is a driving source for driving the pressing means 3, and a gear mechanism 33 that transmits the power generated by the motor 31 to the screw shaft 26 of the lead screw mechanism. And including. The motor 31 is, for example, a stepping motor, and is fixed to the outside of the rear side wall 15 of the chassis 8. On the other hand, the gear mechanism 33 includes a pinion 34 attached to the rotor shaft 32 erected on the inner side of the rear side wall 15 of the chassis 8, a spur gear 35 fixed to the screw shaft 26 of the lead screw mechanism, and the rear of the chassis 8. And a stepped spur gear 36 that is rotatably supported by a shaft 39 standing on the inner side of the side wall 15. In the stepped spur gear 36, the large gear 37 is meshed with the pinion 34 and the small gear 38 is meshed with the spur gear 35. By providing the speed reduction mechanism in this way, even a small motor can be used.

(flame)
As shown in FIG. 7, the press-out device 1 includes a housing 41 that accommodates the support means 2, the pressing means 3, the driving means 4, the guide means 5, and the nutrient bag 6, and a hinge (not shown) ) To cover the upper portion of the housing 41, and thus cover the nutrient solution bag 6 set on the support base 9. The lid body 42 is biased toward the open position shown in FIG. 7 by a torsion spring (not shown) attached to the rotation shaft of the hinge. Further, the lid 42 is adjusted in speed at the time of opening operation by an arcuate gear 43 provided in the vicinity of the hinge being engaged with a gear 45 of a rotary damper 44 attached to the housing 41. .

(Holding mechanism)
The press-out device 1 has a holding mechanism that holds the lid 42 in the closed position (see FIG. 2). As shown in FIG. 7, the holding mechanism includes a pair of left and right metal fittings 46 and 47 provided on the front portion (the portion opposite to the hinge) of the back surface 42 </ b> A of the lid body 42, and the metal fittings 46 and 47. A hook base 48 on which hooks 49 and 50 are formed, and a plate-like base 51 on which the hook base 48 is placed. Each of the metal fittings 46 and 47 includes fixing portions 46A and 47A that are fixed to the back surface 42A of the lid body 42, and shaft portions 46B and 47B that extend in the front-rear direction and are rotatably supported by the fixing portions 46A and 47A. Have.

  As shown in FIG. 7, the hook base 48 has a long hole 52 that penetrates the hook base 48 in the vertical direction. The elongated hole 52 extends in the left-right direction at the center of the hook base 48, and a counterbore is formed in the upper opening. A pair of shaft portions 53 and 54 erected on the pedestal 51 are inserted into the long hole 52. The inner rings of the corresponding radial bearings 55 and 56 accommodated in the counterbore part of the elongated hole 52 are fitted to the tips of the shaft parts 53 and 54. The hook base 48 is guided in the left-right direction and the moving range is determined by the cooperation of the long hole 52 and the pair of radial bearings 53 and 54. The radial bearing 55 and the radial bearing 56 have the same shape (type).

  Furthermore, the hook base 48 has a pair of spring accommodating portions 57 and 58 that penetrate the hook base 48 in the vertical direction. The pair of spring accommodating portions 57 and 58 extend in the left-right direction along the elongated hole 52 and are disposed on both sides in the front-rear direction of the elongated hole 52 with the elongated hole 52 interposed therebetween. Each spring accommodating part 57, 58 has a left end fixed to the hook base 48 and a right end corresponding to each compression coil spring 61, received by a spring receiving part 59, 60 formed by cutting and raising the base 51 (sheet metal member). 62 is accommodated. Accordingly, the hook base 48 is urged leftward with respect to the base 51 by the pair of compression coil springs 61 and 62.

  With this configuration, the holding mechanism is configured so that the brackets 46 and 47 are closed in the process in which the lid 42 is closed, that is, in the process in which the lid 42 is closed from the open position (see FIG. 7) to the closed position (see FIG. 2). The shaft portions 46B and 47B are in contact with the inclined portions 40A and 50A of the corresponding hooks 49 and 50, respectively. When the lid body 42 is further pushed in this state, the hook base 48 is compressed while sliding the inclined portions 49A, 50A of the hooks 49, 50 on the shaft portions 46B, 47B of the corresponding metal fittings 46, 47, respectively. The spring force of the coil springs 61, 62, that is, the force by which the compression coil springs 61, 62 bias the hook base 48 moves to the right with respect to the base 51.

The hook base 48 is pushed back leftward by the spring force (biasing force) of the compression coil springs 61 and 62 when the tips of the hooks 49 and 50 exceed the shaft portions 46B and 47B. Accordingly, the shaft portions 46B and 47B of the respective metal fittings 46 and 47 are locked by the corresponding locking portions 49B and 50B of the hooks 49 and 50, and the lid body 42 is held in the closed position (see FIG. 2). In addition, the control part 101 (refer FIG. 8) mentioned later has the closed position detection sensor 102 (refer FIG. 8) which detects the state by which the cover body 42 was hold | maintained at the closed position. In the first embodiment, a micro switch is applied to the closed position detection sensor 102.
By configuring the holding mechanism in this manner, the lid body 42 is reliably held in the closed position so that the pressing operation can be performed without delay.

(Release mechanism)
On the other hand, the extruding device 1 has a release mechanism that releases the holding of the lid 42 by the holding mechanism. As shown in FIG. 7, the release mechanism has an operation unit 64 in which a release button 63 operated by an operator is formed. The operation unit 64 includes a guide unit 65 that is formed on the opposite side (left side) to the release button 63 and is placed on the pedestal 51. The guide portion 65 is provided with an elongated hole 66 that penetrates the guide portion 65 in the vertical direction and extends in the horizontal direction. A pair of shaft portions 67 and 68 erected on the pedestal 51 are inserted into the elongated hole 66. The guide portion 65, and thus the operation portion 64, is guided in the left-right direction by the cooperation of the elongated hole 66 and the pair of shaft portions 67, 68.

  Further, the release mechanism has a stepped spur gear 69 that is rotatably supported by a shaft portion 72 erected on the pedestal 51. In the stepped spur gear 69, the small gear 70 is engaged with a rack 73 formed between the release button 63 of the operation portion 64 and the guide portion 65, and the large gear 71 is formed on the right side portion of the rear end surface of the hook base 48. The rack 74 is engaged. With this configuration, when the release button 63 is not operated (see FIG. 7), the spring force of the pair of compression coil springs 61 and 62 is transmitted to the operation unit 64 via the release mechanism. Thereby, the operation part 64 is urged | biased in the direction (right direction) which makes the cancellation | release button 63 protrude.

Then, by pushing the release button 63 against the spring force of the compression coil springs 61 and 62 (moving it in the left direction), the release mechanism causes the linear motion of the operation unit 64 to be a straight line in the reverse direction of the hook base 48. As a result, the hook base 48 moves to the right. As a result, the shaft portions 46B and 47B of the metal fittings 46 and 47 are released from the locking by the locking portions 49B and 50B of the corresponding hooks 49 and 50, and the lid 42 is held in the closed position by the holding mechanism. Canceled. As a result, the lid 42 is opened toward the open position (see FIG. 7) by the spring force (biasing force) of the torsion spring (not shown).
By configuring the release mechanism in this way, the operator can open the lid 42 with a light force and a simple operation.

(Flexible sheet)
As shown in FIG. 10, the support means 2 includes a pair of flexible sheets 75 and 76 that sandwich the nutrient bag 6 set on the support base 9 in the vertical direction (thickness direction). In other words, the nutrient bag 6 is set on the support base 9 so as to be disposed between the pair of flexible sheets 75 and 76. As the pair of flexible sheets 75 and 76, for example, a resin sheet having the same width as the support base 9 (the length in the left-right direction is the same) is applied. The lower flexible sheet 76 is attached to the upper surface of the support base 9, the front end position thereof coincides with the front end position of the support base 9, and the rear end position is located behind the rotation axis (axis) of the roller 10. To do. In addition, the code | symbol 16 in FIG. 10 is the spout support part 16 provided in the front side wall 14 of the chassis 8. By engaging the spout 7 of the nutrient bag 6 with this spout support part 16, it is nutrition. The agent bag 6 is positioned in the front-rear direction with respect to the extruding device 1. 10 to 12, the description of the lead screw mechanism and the gear mechanism 33 is omitted for the purpose of simplifying the drawings. Further, the lower flexible sheet 76 may be simply placed without being attached to the support base 9.

  As shown in FIG. 7, the upper flexible sheet 75 moves back and forth along the back surface 42 </ b> A of the lid body 42 in the longitudinal direction of the lid body 42, that is, with the lid body 42 closed (see FIG. 10). Extend in the direction. The flexible sheet 75 is disposed between a pair of guide portions 81 and 82 provided on the back surface 42 </ b> A of the lid body 42 and extending in the longitudinal direction of the lid body 42. In other words, the flexible sheet 75 is supported (guided) by the pair of guide portions 81 and 82 whose both ends in the left-right direction extend in the longitudinal direction of the lid body 42. The front end portion of the flexible sheet 75 is provided with a pair of engagement holes 83 and 84 that are spaced apart in the width direction.

  The engagement holes 83 and 84 are engaged with the corresponding pins 85 and 86 provided on the back surface 42 </ b> A of the lid body 42. Each pin 85, 86 is formed in a T-shaped cross section by an axial plane. That is, each pin 85, 86 has a shaft portion and a head portion. Each of the engagement holes 83 and 84 has insertion holes 83A and 84A having inner diameters (diameters) larger than the outer diameters of the heads of the corresponding pins 85 and 86, and the flexible sheet 75 from the insertion holes 83A and 84A. A groove (not shown) having a groove width that extends to the front end side and is larger than the outer diameter of the shaft portion of each of the corresponding pins 85 and 86 and smaller than the outer diameter of the head portion. Accordingly, the front end portion of the flexible sheet 75 is supported by the lid body 42.

(Block Diagram)
FIG. 8 shows a block diagram of the first embodiment. As shown in this figure, the pressure-extruding device 1 includes a circuit board 100 that is housed inside the housing 41. The circuit board 100 includes a control unit 101 configured by a microcomputer. The control unit 101 includes the above-described closed position detection sensor 102, the roller position detection sensor 103 for detecting the position of the carriage 21 in the front-rear direction, and the position of the roller 10, and the spout 7 of the nutrient bag 6. Each detection signal of the occlusion detection sensor 104 which is in contact with the connected tube 17 (see FIG. 3) and detects an occlusion of the nutrient administration route is processed by the sensor signal processing unit 105 and input to the control unit 101. Note that a photo interrupter is applied to the roller position detection sensor 103. Further, a strain gauge is applied to the blockage detection sensor 104 (see FIG. 13).

  The motor 31 is connected to the control unit 101 via the motor driver 106. The control unit 101 is supplied with power from the battery 107 or the attached AC adapter 108 via the power driver 109. The control unit 101 includes an operation unit 110 including a plurality of operation buttons 111 to 117 (see FIG. 2), a display unit 118 including a liquid crystal panel, and a buzzer for notifying an operator of abnormality. 119 are connected to each other. As shown in FIG. 2, the operation unit 110 in the first embodiment includes a power button 111, a start button 112, a pause button 113, an end button 114, and a nutrient bag 6 type set on the support base 9. Is configured with selection buttons 115 to 117 for selecting, but is not limited thereto.

(flowchart)
Next, based on the flowchart shown in FIG. 9, an expression method when applied to a treatment in which a nutrient or medicine is directly administered from the abdominal cavity of a patient using the above-described expression device 1 will be described. The extruding device 1 is placed on a table in advance. Next, the power button 111 is operated to turn on the power of the press-out device 1, but the power-on timing may be after the nutrient bag 6 is set. Note that the pressure-extraction device 1 immediately after power-on is in an initial state. In the press-out device 1 in the initial state, the carriage 21 and thus the roller 10 are located at the retracted end position (press-out start position) shown in FIG. In the initial state, the roller 10 is in contact with the rear end portion of the upper flexible sheet 75.

(Set of nutrient bag)
First, the release button 63 is operated (pressed) to open the lid 42 (step S1 in FIG. 9). Next, the nutrient bag 6 having the tube 17 connected to the spout 7 is set on the support base 9 of the extruding device 1, that is, inserted between the pair of flexible sheets 75 and 76 (in FIG. 9). Step S2). At this time, the nutrient bag 6 is positioned in the front-rear direction (the left-right direction in FIG. 10) by engaging the spout 7 with the spout support 16.

(Selection of nutrient bag)
Next, one of the selection buttons 115 to 117 is operated to select the type of the nutrient bag 6 (step S3 in FIG. 9). Thereby, the capacity and administration time (hereinafter referred to as “pressing time”) of the enteral nutrient corresponding to the type of the selected nutrient bag 6 are displayed on the display unit 120. After selecting the type of nutrient bag 6, the lid 42 is manually closed (step S4 in FIG. 9). The lid 42 is closed (Yes in step S5 in FIG. 9). In other words, when the lid 42 is held by the holding mechanism, the control unit 101 receives the sensor signal of the closed position detection sensor 102.

(Priming)
Here, priming, that is, when the air in the tube 17 is pushed out by the enteral nutrient (content) pressed out from the nutrient bag 6 to fill the tube 17 with the enteral nutrient (step in FIG. 9). (Yes in S6), the roller 10 is advanced by a necessary distance (step S7 in FIG. 9). After the priming is completed by moving the roller 10 forward, the tube 17 connected to the nutrient bag 6 is connected to a catheter (not shown) embedded in the patient (step S8 in FIG. 9). In the priming, for example, the roller 10 may be fast-forwarded (moved leftward in FIG. 10) by long-pressing or overlappingly pressing any of the operation buttons 112 to 114 of the operation unit 110. An operation switch for fast-forwarding the roller 10 may be provided in the operation unit 110 separately. In addition, when priming is not performed, for example, when a person pushes the nutrient bag 6 by hand in advance to fill the tube 17 with enteral nutrients (No in step S6 in FIG. 9), the tube 10 is not moved forward. 17 is connected to the catheter (step S8 in FIG. 9).

(Pressing start)
When the start button 112 is operated after connecting the tube 17 to the catheter (step S9 in FIG. 9), the position of the roller 10 shown in FIG. 12 is determined from the position of the roller 10 at the time when the priming is completed (hereinafter referred to as “reference position”). A moving distance (hereinafter referred to as “pressing distance”) to the forward end position (pressing completion position) is calculated. The control unit 101 controls the motor 31 so that the roller 10 reaches the forward end position with the set pressure time based on the pressure time (set time) and the pressure distance (calculated distance) described above (see FIG. The pulse rate of the motor control signal is determined), that is, the moving speed of the roller 10 is controlled.

  Thereby, the roller 10 moves forward toward the forward end position, in other words, starts moving toward the spout 7 of the nutrient bag 6 (step S10 in FIG. 9). Here, as shown in FIG. 11, the roller 10 during movement (pressing) has a constant distance from the support base 9 in the vertical direction, in other words, a gap formed between the support base 9 and the support base 9. 11 while moving to the left in FIG. That is, the roller 10 pours from the end opposite to the spout 7 of the nutrient bag 6 while flowing the enteral nutrient in the nutrient bag 6 leftward on the upper flexible sheet 75. Move towards exit 7. As the roller 10 moves, the nutrient solution 6 between the support 9 and the roller 10, that is, from the nutrient bag 6 between the pair of flexible sheets 75 and 76, has a certain amount of enteral nutrient. It is expressed at the delivery rate, and thus enteral nutrient is administered into the patient's body at a constant flow rate.

  When the controller 101 receives an operation signal for the pause button 113 while the roller 10 is moving (pressing operation) (Yes in step S11 in FIG. 9), the operation signal for the start button 112 or the end button 114 is input. (Step S12 in FIG. 9). When the control unit 101 receives the operation signal of the end button 114 (end of step S12 in FIG. 9), the control unit 101 returns the roller 10 to the press-out start position (step S13 in FIG. 9). After the roller 10 returns to the pressure start position, the lid 42 is manually opened (step S14 in FIG. 9).

(Blockage monitoring)
When the control unit 101 receives the operation signal for the start button 112 in step S12 in FIG. 9 (start in step S12 in FIG. 9), the control unit 101 again monitors the operation signal for the pause button 113 (step S11 in FIG. 9). . Then, the control unit 101 monitors the sensor signal from the blockage detection sensor 104 (step S15 in FIG. 9) while the operation signal of the pause button 113 is not input (No in step S11 in FIG. 9). Here, when receiving the sensor signal from the blockage detection sensor 104 (Yes in step S15 in FIG. 9), the control unit 101 stops the rotation of the motor 31 and stops the movement of the roller 10 (step S16 in FIG. 9). ). Then, the control unit 101 switches the buzzer 119 from OFF to ON in order to inform that the nutrient administration route including the tube 17 is blocked (step S17 in FIG. 9), and further displays a blockage occurrence message on the display unit 118. This is displayed (step S18 in FIG. 9).

  On the other hand, the controller 101 does not receive the sensor signal from the blockage detection sensor 104, that is, the blockage does not occur in the nutrient solution administration route (No in step S15 in FIG. 9), and the set pressure is set. When the time (administration time) elapses, that is, when the roller 10 reaches the forward end position (pressing completion position) shown in FIG. 12 (Yes in step S20 in FIG. 9), the rotation of the motor 31 is stopped and the roller is stopped. 10 is stopped (step S21 in FIG. 9). Then, the control unit 101 switches the buzzer 119 from OFF to ON in order to notify that the enteral nutrition has been completed (administration) (step S22 in FIG. 9), and the display unit 118 has completed the expression (step S22). The administration completion message is displayed (step S23 in FIG. 9).

(effect)
According to the first embodiment, the nutrient bag 6 (flexible container) is set on the support base 9 (support means 2), and the roller 10 (pressing means 3) is directed from the retracted end position to the advanced end position. In other words, the roller 10 is moved from the end of the nutrient bag 6 opposite to the spout 7 toward the spout 7. Thereby, the nutrient bag 6 on the support base 9 is pressed by the roller 10, that is, the thickness of the nutrient bag 6 is gradually reduced from the end opposite to the spout 7 toward the spout 7. Since the enteral nutrient (content) in the agent bag 6 flows toward the spout 7, the enteral nutrient from the spout 7 of the nutrient bag 6 at a pressure speed corresponding to the moving speed of the roller 10. Can be squeezed out.
Thus, since the extruding device 1 moves the roller 10 in the front-rear direction, there is no need to move the nutrient bag 6, so that the tube 17 is moved by the nutrient bag 6 as in Patent Document 1 described above. It is not necessary to set the distance longer, and the amount of enteral nutrient that is wasted by remaining in the tube 17 can be reduced.

  In the first embodiment, since the motor 31 (driving means 4) is used as the driving source of the roller 10, the moving speed of the roller 10, and thus the enteral nutrient extruding speed (dosing speed) is appropriately set. It is possible to set. For example, it is possible to set a mode for switching the pressure rate of enteral nutrient between the first half and the second half of administration, a mode for gradually increasing the pressure rate of enteral nutrient, and the like. Furthermore, since the enteral nutrient is accurately expressed from the nutrient bag 6 at a stable pressure rate simply by pressing the start button 112, it is possible to provide the expression device 1 with high operability and reliability. In addition, since the administration time of enteral nutrient can be accurately managed, the burden on the patient can be reduced and the burden on the operator (nurse) can be reduced.

Further, the extruding device 1 includes guide means 5 that guides the movement of the roller 10 in the front-rear direction. The guide means 5 performs the rotational movement of the carriage 21 that supports the roller 10 and the motor 31 in the front-rear direction of the carriage 21. And a lead screw mechanism for converting into linear motion. As a result, the basic structure can be simply configured, and a cost-effective apparatus can be provided.
Further, the guide means 5 is provided on a pair of pinions 29L and 29R that are rotatably provided on both sides of the carriage 21 and on the corresponding pinions 29L and 29R that are provided on the chassis 8 and extend in the front-rear direction. A pair of racks 28L and 28R engaged with each other is provided. As a result, the rigidity of the guide means 5 and thus the support rigidity of the roller 10 can be increased, and the straight movement of the carriage 21 can be ensured. As a result, the roller 10 can be moved smoothly.

  Further, the support means 2 includes a pair of flexible sheets 75 and 76 that sandwich the nutrient bag 6 in the thickness direction (vertical direction), and the extruding device 1 has a pair of flexible sheets with the nutrient bag 6 interposed therebetween. The flexible sheets 75 and 76 are pressed between the support base 9 and the roller 10 that moves toward the spout 7 of the nutrient bag 6. Thereby, it is possible to prevent the nutrient bag 6 from moving (sliding) with respect to the support base 9 and the roller 10 at the time of extruding, that is, when the roller 10 moves forward, and the reliability of the apparatus can be improved. . In addition, it can be applied to various types of nutrient bags 6 regardless of the shape and size of the nutrient bag 6 and has high versatility.

(Modification)
In 1st Embodiment, although the case where the expression apparatus 1 was applied to the extraction apparatus used by the treatment which administers a nutrient or a pharmaceutical directly from a patient's abdominal cavity was illustrated, the expression apparatus 1 is from a movable container. The present invention can be applied to various uses for extruding the contents. For example, by operating the operation unit 110, the shampoo (contents) enclosed in the flexible container is connected to the flexible container. The tube 17 can be configured to be pressed out by a certain amount.
As the guide means 5, a ball screw mechanism can be applied instead of the lead screw mechanism.
In the first embodiment, the backward end position / forward end position of the roller 10 is detected by the roller position detection sensor 103 (photo interrupter), but the backward end position / forward end position of the roller 10 is stepped out of the motor 31 (motor 31). Or a stepping motor) or an encoder output signal.
The blockage detection sensor 104 (strain gauge) for detecting blockage of the administration route including the tube 17 may be provided on either the lid 42 side or the main body side (housing 41 side).
The occlusion detection sensor 104 detects a member (for example, a holding portion of the screw shaft 26) whose position is displaced by the reaction of the advance of the roller 10 due to the occlusion of the administration route, and detects a member other than a strain gauge. But it is adaptable.

  As shown in FIG. 8, wireless communication between the extruding device 1 and the external receiving device 120 can be established. In this case, the extruding device 1 includes a communication unit configured by a radio signal control unit 121 connected to the control unit 101 and a radio signal transmission unit 122 connected to the radio signal control unit 121. On the other hand, the receiving device 120 includes a radio signal control unit 124 connected to the control unit 123 and a radio signal reception unit that is connected to the radio signal control unit 124 and transmits / receives radio signals to / from the radio signal transmission unit 122. 125, a display unit 126 connected to the control unit 123, and a buzzer 127 connected to the control unit 123.

  The control unit 101 of the press-out device 1 displays a press-out completion message on the display unit 120 in step S23 in FIG. 9 (or simultaneously with the display), and then transmits a press-out completion signal to the receiving device 120 (FIG. 9). 9 step S24). When receiving the press-out completion signal from the press-out device 1, the receiving device 120 displays a press-out completion message on the display unit 126 and switches the buzzer 127 from OFF to ON. Then, after the roller 10 is returned to the pressing start position (step S25 in FIG. 9), the lid 42 is manually opened (step S26 in FIG. 9).

  Further, upon receiving the sensor signal from the blockage detection sensor 104 in step S15 in FIG. 9 (Yes in step S15 in FIG. 9), the control unit 101 of the pressure-extraction device 1 displays a blockage occurrence message on the display unit 120. (Step S18 in FIG. 9) or simultaneously with the display, a blockage occurrence signal is transmitted to the receiving device 120 (Step S19 in FIG. 9). When receiving the blockage occurrence signal from the extruding device 1, the reception device 120 displays a blockage occurrence message on the display unit 126 and switches the buzzer 127 from OFF to ON.

  By configuring in this way, the nurse can know in real time the completion of the expression (completion of administration) and the blockage of the nutrient administration route including the tube 17 at a distance from the patient (the expression device 1). Therefore, during the administration of enteral nutrient, the nurse does not need to take care of the patient, and the burden on the nurse can be reduced as compared with the conventional technique that requires the attendance of the nurse.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to the accompanying drawings. In addition, about the same or an equivalent component with respect to the extrusion apparatus 1 of 1st Embodiment mentioned above, while giving the same name and code | symbol, detailed description is abbreviate | omitted.
In the second embodiment, the extruding device 131 is mainly different from the first embodiment in the structure of the pressing means 3. As shown in FIGS. 13 and 14, the pressing means 3 in the second embodiment is configured by a pair of rollers 133 and 133 arranged vertically. A certain gap is formed between the pair of rollers 133 and 133 in the vertical direction.

  The pair of rollers 133 and 133 are made of the same material, but may be made of different materials. The pair of rollers 133 and 133 have the same outer diameter (diameter). For example, the outer diameter of the upper roller 132 may be set larger than the outer diameter of the lower roller 133. A shaft 30 having pinions 29L and 29R fixed to both ends is inserted into the lower roller 133 so as to be relatively rotatable. That is, the roller 133 is supported by the carriage 21 and is disposed coaxially with the shaft 30.

(Interlocking means)
In the second embodiment, the extruding device 131 moves the upper roller 132 to the retracted position (see FIG. 15) / pressed position (see FIG. 14) in conjunction with the opening / closing operation of the lid 42 (opening / closing door). Interlocking means for moving is provided. The interlocking means has a pair of swing arms 134L and 134R that rotatably support both ends of the shaft portion 135 of the roller 132. Note that the pair of swing arms 134L and 134R are configured to be bilaterally symmetric. Here, in order to simplify the description, only the right swing arm 134R will be described. The right end of the shaft portion 135 of the roller 132 is supported by the rotation side end portion 136 of the swing arm 134R via a bearing (not shown). The swing arm 134 </ b> R is connected to the carriage 21 by a shaft 138 having a base end portion 137 passing through the base end portion 137 and the wall portion 24 </ b> R of the carriage 21. As a result, the swing arm 134 </ b> R can rotate about the shaft 138 with respect to the wall 24 </ b> R of the carriage 21.

  The swing arm 134R is biased toward the retracted position (see FIG. 15) by the torsion spring 147 (see FIG. 15) attached to the shaft 138, that is, in the clockwise direction shown in FIG. As shown in FIG. 14, the shaft 138 is disposed on the extension portion 139 of the wall portion 24R (24L) formed by extending the wall portion 24R of the carriage 21 in the first embodiment obliquely upward to the right. . A groove 140 extending in an arc shape is formed on the inner surface of the extension 139 of the wall 24R, and a pin 141 that is engaged with the groove 140 is erected on the outer surface of the swing arm 134R. Due to the engagement between the groove 140 and the pin 141, the swing arm 134R is guided in the rotation operation (swing operation), the rotation range is limited, and the retracted position / pressing position is determined.

  As shown in FIG. 14 and FIG. 15, the interlocking means can come into contact with the mounting piece 143 fixed to the rotation side end 136 of the swing arm 132 </ b> R and the rail 146 provided on the back surface 42 </ b> A of the lid body 42. A follower 142 configured by a cam follower 144 and a spring member 145 provided between the mounting piece 143 and the cam follower 144. As a result, as shown in FIG. 15, in a state where the lid body 42 is in the open position, the swing arm 132R is positioned at the rotation end in the clockwise direction in FIG. In this case, the roller 132 is positioned at the retracted position (see FIG. 15).

  Then, when the lid body 42 is closed and rotated by a certain angle from the state where the lid body 42 is located at the open position (see FIG. 15), the cam follower 144 of the follower 142 is the lid as shown in FIG. It abuts on a rail 146 provided on the body 42. In conjunction with the closing operation of the lid 42 from the state shown in FIG. 16, the swing arm 134 </ b> R and then the roller 132 rotate about the shaft 138 in the counterclockwise direction in FIG. 14. As shown in FIG. 14, the roller 132 is positioned at the pressing position in a state where the lid 42 is closed.

  At the time of press-out, that is, when the carriage 21 moves, the spring force of the spring member 145 of the driven portion 142 acts as a moment load that rotates the carriage 21 in the counterclockwise direction in FIG. This moment load acts so as to cancel the running resistance acting on the carriage 21 at the time of extruding, and the variation in the thickness of the flexible sheets 75 and 76 and the nutrient bag 6 is absorbed by the spring force of the spring member 145. Therefore, it is possible to reduce the load when the carriage 21 and thus the pair of rollers 132 and 133 move forward. Moreover, the same effect can be acquired by applying the driven part 142 and the rail 146 to the press-out device 1 of 1st Embodiment.

(Locking pin)
As shown in FIG. 13, the extruding device 131 locks the end of the nutrient bag 6 opposite to the spout 7, and prevents the position of the nutrient bag from deviating forward during the pressing operation. A pair of locking pins 151 and 152 are provided. The pair of locking pins 151, 152 is erected on the chassis 8, and a pair of holes 149, 150 formed in the heat seal part 148 of the nutrient bag 6 are fitted therein. In this manner, the nutrient bag 6 is locked and supported by the pair of latches 151 and 152 at the end opposite to the spout 7 of the nutrient bag 6, and the spout 7 is positioned by the spout support 16. And supported. For this reason, the pressing device 1 in the second embodiment does not have the pair of flexible sheets 75 and 76 provided in the pressing device 1 in the first embodiment.
In addition, when the hole is formed near the center of the width direction of the nutrient bag 6, one locking pin is sufficient.
Moreover, since the position of the formed hole differs for each type of nutrient bag 6, the exchanging device 1 can be used for various nutrient bags 6 by exchanging with a locking pin corresponding to the type of nutrient bag 6. It becomes possible to cope with.

(Bag adapter)
As shown in FIG. 17, a bag adapter 154 that covers the back portion (volume portion) can be attached to the nutrient bag 6. The bag adapter 154 is obtained, for example, by forming a resin material in a bag shape, and a pair of holes 156 and 157 are formed in the rear end edge portion 155. Then, as shown in FIG. 18, the pair of holes 156 and 157 of the bag adapter 154 are fitted to the pair of locking pins 151 and 152 of the press-out device 131. Thereby, the edge part on the opposite side to the spout 7 of the nutrient bag 6 can be positioned, and also slipping of the edge part on the opposite side to the spout 7 of the nutrient bag 6 can be prevented. it can.

In addition, when the bag adapter 154 is applied to the press-out device 1 of the first embodiment, the upper flexible sheet 75 can be omitted. In this case, the holes 156 and 157 in the rear edge 155 of the back adapter 154 may or may not be provided.
And according to 2nd Embodiment, the effect equivalent to 1st Embodiment mentioned above can be acquired.

DESCRIPTION OF SYMBOLS 1 Pressing apparatus, 2 Supporting means, 3 Pressing means, 4 Driving means, 6 Nutrient bag (flexible container), 7 Spout

Claims (11)

A device for extruding contents from a flexible container,
Support means;
Pressing means for pressing the flexible container supported by the supporting means;
Driving means for driving the pressing means toward the spout of the flexible container;
An extruding device comprising: The pressing means includes a roller,
2. The pressurizing device according to claim 1, wherein the driving means includes a motor. The pressure-extruding device according to claim 2, further comprising guide means for guiding movement of the roller between a predetermined pressure start position and a pressure completion position. The guiding means includes
A carriage for supporting the roller;
A lead screw mechanism having a screw shaft that extends along the moving direction of the roller and is rotationally driven by the motor; and a ball nut that is fixed to the carriage and screwed into the screw shaft;
The extruding device according to claim 3, further comprising: The driving means includes
The press-out device according to claim 4, further comprising a gear mechanism that transmits a driving force of the motor to a screw shaft of the lead screw mechanism. The guiding means includes
A pair of racks extending along the moving direction of the rollers and spaced apart in a direction along the axis of the rollers;
A pair of pinions rotatably provided on the carriage and meshed with corresponding racks;
An extruding device according to any one of claims 3 to 5, comprising: The said support means is equipped with the latch pin which fits the hole formed in the edge part on the opposite side to the spout of the said flexible container, The one in any one of Claims 1-6 characterized by the above-mentioned. Extruding device. The said support means is equipped with a pair of flexible sheet | seat which pinches | interposes the said flexible container in the thickness direction, The extrusion apparatus in any one of Claims 1-7 characterized by the above-mentioned. The press-out device according to claim 1, further comprising an adapter attached to the other end of the flexible container. The said adapter is provided with the hole by which the said locking pin is fitted, The pressurization apparatus of Claim 9 characterized by the above-mentioned. A housing that houses the flexible container;
An open / close door provided in the housing to be openable and closable via a hinge;
Interlocking means for positioning the roller at a predetermined retracted position / pressing position in conjunction with the opening / closing operation of the door;
The press-out device according to claim 2, comprising:

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