JP2011206209A - Transfusion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a configuration that enables a device which is disposed on a casing of a transfusion device and is other than an operation indicator to substitute for the operation indicator, the operation indicator being disposed on the casing and reporting the operation status of the transfusion device.SOLUTION: The transfusion device includes: a display unit 118 provided with a region 405 that displays the operation status of a liquid feed operation by character information and a region 403 that is positioned at the outer peripheral part of the area 405 and displays the operation status of the liquid feed operation by color information; an optical member 402 provided with a diffusion member that is disposed on the region 403 and diffuses light emitted from the region 403 to the outside direction of the display unit 118; and a display control unit that controls the display of the display unit 118 such that a color corresponding to the operation status is displayed constantly or for predetermined periods on at least one section of the region 403 where the diffusion member is disposed.

Description

  The present invention relates to an infusion device such as a syringe pump or an infusion pump.

  Conventionally, infusion devices such as syringe pumps and infusion pumps have been used for nutritional supplementation, blood transfusion, and injection of chemical solutions such as chemotherapeutic agents and anesthetic agents.

  Among these, the syringe pump sets a syringe filled with contents such as a chemical solution on a support base, connects a syringe pusher to the slider assembly, and then presses a liquid feeding operation start button. By pressing the pusher, the contents in the syringe can be sent out with high accuracy. According to the syringe pump, the flow rate can be controlled with high accuracy over a relatively long time.

  In such a syringe pump, normally, when the content filled in the syringe cannot be normally fed out (liquid feeding), the function of detecting this and notifying the surroundings via an operation indicator Is provided.

  Specifically, when a resistance of a predetermined value or more occurs on the liquid supply flow path and it is determined that the blockage is abnormal, or when the remaining amount of contents in the syringe is reduced, or a pressing operation by the slider assembly In such a case, the operation indicator is turned on or blinking red (for example, see Patent Document 1 below). By providing such a configuration, even if the above-described problem occurs in the syringe pump during the liquid feeding operation, a nurse or the like can immediately recognize this and respond quickly.

JP 2009-219638 A

  However, in the case of the conventional operation indicator provided in the syringe pump, it has a convex shape and occupies a certain area on the housing so that it can be viewed from any direction. Depending on the viewing direction, the motion indicator may enter the blind spot.

  For this reason, the visibility of the operation indicator is poor and other devices on the housing (liquid crystal display unit, other lamps, operation input unit, etc.) are subject to dimensional restrictions, and the cost increases. It also contributed. For this reason, it is desirable that the operation indicator is shared with other devices on the housing of the syringe pump, and the function is replaced by the device.

  The present invention has been made in view of the above problems, and provides a configuration for replacing an operation indicator, which is arranged on a housing of an infusion device and notifies an operation state of the infusion device, with another device on the housing. For the purpose.

In order to achieve the above object, an infusion device according to the present invention has the following configuration. That is,
An infusion device for delivering a chemical solution at a predetermined injection rate (mL / h),
A first area that displays the operation state for the operation of sending out the chemical solution by character information, and a second region that is located on the outer periphery of the first region and that displays the operation state of the operation for sending out the chemical solution by color information. A display unit having a region of
An optical member having a diffusing member disposed on the second region and diffusing the light emitted from the second region in the outer direction of the display unit;
A display control unit that controls display of the display unit so that a color corresponding to the operation state is displayed at all times or at regular intervals in at least a part of the second region in which the diffusion member is disposed. It is characterized by providing.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the structure for replacing with the other apparatus on a housing | casing the operation | movement indicator which is distribute | arranged on the housing | casing of an infusion device and alert | reports the operation state of an infusion device.

It is a figure which shows an example of the external appearance structure of the infusion apparatus which concerns on one Embodiment of this invention. It is a figure which shows the example of 1 structure of the operation panel of an infusion apparatus. It is a figure which shows the function structure of an infusion apparatus. It is a figure which shows the mechanism for substituting an operation | movement indicator with a liquid crystal display part. It is a figure which shows the flow of the display control process of a liquid crystal display part at the time of liquid feeding operation | movement. It is a figure which shows the example of a display of the liquid crystal display part at the time of liquid feeding operation | movement. It is a figure which shows the example of a display of the liquid crystal display part at the time of liquid feeding operation | movement. It is a figure which shows the mechanism for substituting an operation | movement indicator with a liquid crystal display part. It is a figure which shows the mechanism for substituting an operation | movement indicator with a liquid crystal display part. It is a figure which shows the example of a display of the liquid crystal display part at the time of liquid feeding operation | movement. It is a figure which shows the example of a display of the liquid crystal display part at the time of liquid feeding operation | movement.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, a syringe pump will be described as an example of an infusion device. However, the infusion device is not limited to a syringe pump, and may be another device such as an infusion pump. Not too long.

[First Embodiment]
1. External configuration diagram of a syringe pump 1 is an external configuration of the syringe pump 100 according to an embodiment of the present invention. In FIG. 1, the syringe pump attached to the upper mounting tool of the pole is in a state before the syringe S is set, and the syringe S attached to the lower mounting tool of the pole is the syringe S set. Each of the states is shown.

  As shown in FIG. 1, the syringe pump 100 includes a syringe fixing portion 120 that fixes the syringe S to the syringe pump 100 by fitting the flange portion SF while sandwiching the body portion SB of the syringe S, and a syringe pusher. By pressing the SP in the direction of the arrow 140, various settings and operation instructions are given to the slider assembly 130 having a mechanism for sliding the syringe pusher SP and the syringe pump 100, and the setting contents and the operation state are displayed. And an operation panel 110.

  The syringe fixing part 120 includes a support base 122 that supports the outer peripheral surface of the main body part SB of the syringe S from below, and a clamp 121 that sandwiches the outer peripheral surface of the main body part SB of the syringe S between the support base 122 and Thus, the positions of the syringe S on the syringe pump 100 in the X-axis direction and the Z-axis direction are defined. Moreover, the syringe fixing | fixed part 120 is equipped with the recessed part 123 which prescribes | regulates the position of the syringe S by the Y-axis direction by fitting the syringe flange part SF.

  The slider assembly 130 includes a contact portion 136 configured to be slidable in the arrow 140 direction. The contact portion 136 is connected to a slider feed mechanism (not shown) via a pipe shaft (not shown) and an inner clutch shaft, and slides in the direction of the arrow 140 when the slider feed mechanism operates.

  The contact portion 136 further includes a clutch lever 131. When the clutch lever 131 is pressed, the left and right hooks 132 and 133 operate in the opening direction. Note that the left and right hooks 132 and 133 are biased in the closing direction, and return to the closing direction when the pressing force on the clutch lever 131 is released.

  For this reason, after a user such as a nurse fixes the syringe S to the syringe fixing unit 120, the syringe pressing the abutting unit 136 while pressing the clutch lever 131 (that is, with the left and right hooks 132 and 133 opened). When it is brought into contact with the child SP and then released from the clutch lever 131, the contact portion 136 is connected to the syringe pusher SP (attached to the lower mounting tool in FIG. 1). See syringe pump 100). In this way, the setting of the syringe S to the syringe pump 100 is completed.

  Here, on the upper surface of the abutting portion 136, a lamp 134 is provided that detects when the abutting portion 136 cannot be correctly connected to the syringe pusher SP and lights or blinks. Thereby, the user can recognize that the contact part 136 is not correctly connected to the syringe pusher SP.

  The operation panel 110 is arranged with devices for accepting various settings and operation instructions, and displaying setting contents and operation states. Details of the operation panel 110 will be described later.

2. Details of Operation Panel 110 Next, details of the operation panel 110 will be described. FIG. 2 is a diagram illustrating an example of a detailed configuration of the operation panel 110. In FIG. 2, 111 is a voltage drop lamp that is turned on when the power supply voltage drops, and 112 is a battery lamp that is turned on when the remaining amount of the battery becomes a predetermined value or less. Reference numeral 113 denotes a power switch, which is used when instructing ON / OFF of the power supply of the syringe pump 100.

  Reference numeral 114 denotes a blockage level lamp. When the internal pressure value of the syringe S reaches a predetermined three-stage set value (pressure value indicating the blockage level) during the liquid feeding operation, green, yellow, and orange are respectively used. Lights up.

  Reference numeral 115 denotes a clamp abnormality lamp which lights or flashes red when it is detected that the syringe S is not correctly clamped by the clamp 121.

  Reference numeral 116 denotes a flow rate setting value display unit for displaying a flow rate setting value (mL / h) set by operating a setting dial (not shown), and is composed of, for example, a 7-segment LED.

  Reference numeral 117 denotes a start switch, which can be pressed when the syringe S is appropriately set and the flow rate setting value is set by the setting dial, so that the liquid feeding operation start condition is satisfied. When the start switch 117 is pressed, liquid feeding by the syringe pump 100 is started.

  Reference numeral 118 denotes a liquid crystal display unit, which is a scheduled amount (mL) when the set syringe S is sent, an integrated amount (mL) during feeding, an amount of gamma injection (mg / h), and an internal pressure value of the syringe S History, operation content messages, alarm information, etc. are displayed. In addition, the liquid crystal display unit 118 of the syringe pump 100 according to the present embodiment further has an alternative function of the conventional operation indicator (however, a detailed configuration of the alternative function will be described later).

3. Functional Configuration of Syringe Pump 100 Next , the functional configuration of the syringe pump 100 will be described. FIG. 3 is a diagram illustrating a functional configuration of the syringe pump 100. An operation input unit 301 is arranged on the operation panel 110 and includes an operation button, a setting dial, and the like that are used to input setting values and various operation instructions. The content input from the operation input unit 301 is transmitted to the main control unit 300 and processed in the main control unit 300.

  The storage unit 302 stores various parameters used in the execution of each function of the main control unit 300 during the liquid feeding operation of the syringe pump 100, and various data detected during the liquid feeding operation (for example, the internal pressure of the syringe S). Value, accumulated amount during feeding, power supply voltage value, remaining power supply capacity, etc.) are stored.

  The liquid crystal display unit 303 corresponds to the liquid crystal display unit 118 of FIG. 2 and displays a screen generated by the liquid crystal display control function 311 of the main control unit 300.

  The flow rate setting display unit 304 corresponds to the flow rate setting display unit 116 of FIG. 2 and displays the flow rate setting value input via the operation input unit 301 (setting dial).

  Lighting or blinking of the lamps 305 is controlled by the lamp control function 312 of the main control unit 300. The lamps 305 mentioned here include various lamps (voltage drop lamp 111, battery lamp 112, clamp abnormality lamp 115, etc. in FIG. 2) arranged on the operation panel 110.

  The power supply unit 306 supplies power to the main control unit 300 and the units 301 to 305 and 307 to 310 connected to the main control unit 300 under the control of the power management function 317 of the main control unit 300.

  The syringe diameter detector 307 is disposed on the clamp 121 and detects the position of the clamp 121 when the outer peripheral surface of the main body SB of the syringe S is sandwiched between the syringe 121 and the support base 122. The syringe diameter calculation function 313 of the main control unit 300 calculates the syringe diameter based on the position information output from the syringe diameter detection unit 307.

  The slider feed mechanism drive unit 308 is driven under the control of the slider feed control function 314 of the main control unit 300 when a liquid feed operation start instruction is input via the operation input unit 301, and the contact unit 136. Slide in the direction of arrow 140. The slider feed control function 314 also determines whether or not there is an abnormality in the slider feed mechanism driving unit 308 (for example, clutch abnormality such as clutch disengagement).

  The closed state detection unit 309 is attached to the slider assembly 130 and detects the internal pressure value of the syringe S during the liquid feeding operation by the syringe pump 100. The internal pressure value of the syringe S detected by the closed state detection unit 309 is processed by the closed state determination function 315 of the main control unit 300 to determine whether there is a closed abnormality.

  The pusher position detection unit 310 detects the position of the syringe pusher SP during the liquid feeding operation of the syringe pump 100. The position information of the syringe pusher SP detected by the pusher position detection unit 310 is processed by the integrated amount calculation function 316 of the main control unit 300 to calculate the integrated amount of the liquid supply after the start of the liquid supply operation. The integrated amount calculation function 316 further calculates the remaining amount of the chemical solution in the syringe S based on the calculated integrated amount and the internal volume of the syringe S, and compares the calculation result with a predetermined threshold value. Thus, it is determined whether or not the remaining amount is abnormal.

4). Detailed Configuration of Liquid Crystal Display Unit Next, a detailed configuration of the liquid crystal display unit 118 for replacing the function of the conventional operation indicator will be described. FIG. 4 is a diagram illustrating an external configuration of the liquid crystal display unit 118.

  As shown in FIG. 4A, the liquid crystal display unit 118 includes a display panel 401 and an optical member 402, and the optical member 402 is configured by a light diffusing member disposed along the peripheral edge of the display panel 401. ing. As shown in FIG. 4B, the optical member 402 has a height of about 6 to 7 mm and a width of about 9 mm, and has a shape with an open center. With such a size and shape, there is no trouble in visually recognizing a numerical value such as a set value displayed on the liquid crystal display unit 118 or a trend graph of the occlusion pressure.

  The optical member 402 is a transparent resin containing a light diffusing material. Examples of the transparent resin include polystyrene resin, methacrylic resin, polycarbonate resin, ABS resin (acrylonitrile-styrene-butadiene copolymer resin), MS resin ( Examples thereof include thermoplastic resins such as methyl methacrylate-styrene copolymer resin), AS resin (acrylonitrile-styrene copolymer resin), polyolefin resin such as polyethylene and polypropylene, and olefin resin.

  The light diffusing agent has a refractive index difference with the transparent resin of usually 0.01 to 0.3, preferably 0.05 to 0.2, and a weight average particle diameter of usually 1 μm to 15 μm, preferably 2 μm to It is assumed that it is 10 μm. This is because the light emitted from the LED can be efficiently diffused by adopting such a configuration.

  Incompatible materials with transparent resins are used, such as inorganic particles such as glass beads, silica particles, aluminum hydroxide particles, calcium carbonate particles, barium carbonate particles, titanium oxide particles, talc, and styrene resin particles. Organic particles such as acrylic resin particles and silicone particles are used. In addition, content of a light-diffusion agent is 0.1 mass part-10 mass parts normally with respect to 100 mass parts of transparent resin, for example, Preferably it is 0.3 mass part-7 mass parts. It is because the light emission by LED can be efficiently light-diffused by setting to such content.

  FIGS. 4C and 4D are views showing a CC cross section and a DD cross section of FIG. 4B, respectively. As shown in FIGS. 4C and 4D, the light diffusing member has a shape that draws an arc toward the outside or a chamfered shape at the periphery of the display panel 401. For this reason, the light emitted from the display panel 401 (the end portion of the display panel 401) located directly below the optical member 402 is diffused and emitted toward the outer side.

  As a result, the light emitted from the display panel 401 located directly below the optical member 402 is visually recognized by the user located in the outer direction (the arrow 404 indicates the visible range at this time. ).

  As described above, when the conventional operation indicator having a convex shape so that it can be viewed from an arbitrary direction is replaced by the liquid crystal display unit 118, an optical member is generally used for a liquid crystal display unit having a narrow visible range. By adopting a configuration in which 402 is arranged, it is possible to make the visually recognizable range equivalent to the conventional one.

  Further, the display panel 401 has a region (hereinafter referred to as an operation state display region (second region) 403) positioned directly below the optical member 402 and a central region (hereinafter referred to as an information display region (first region)). By displaying the operation state display area 403 with the same color scheme as the conventional operation indicator, the blinking / lighting of the conventional operation indicator can be reproduced with the same color scheme. (That is, the operation state display area 403 is an area for displaying the operation state of the syringe pump 100 by color information). Hereinafter, the display control process in the liquid crystal display unit 118 for reproducing the blinking / lighting of the conventional operation indicator with the same color scheme will be described in detail.

  In the information display area 405, the scheduled amount (mL) when the set syringe S is sent, the integrated amount (mL) during feeding, the gamma injection amount (mg / h), the internal pressure of the syringe S Character information such as a history of values, messages of operation details, alarm information using icons and pictograms, a trend graph of occlusion pressure, and the like are displayed in any combination.

  In addition, the liquid crystal display unit 118 of the syringe pump 100 according to the present embodiment further has an alternative function of the conventional operation indicator (however, a detailed configuration of the alternative function will be described later).

5. Flow diagram 5 of the display control process in the liquid crystal display unit 118 feeding fluid during operation of the syringe pump 100, during the liquid transfer operation of the syringe pump 100, a liquid crystal display control function for controlling the display contents displayed on the liquid crystal display unit 118 311 5 is a flowchart showing a flow of display control processing by the computer.

  When the syringe S filled with (accommodated with) the chemical solution is correctly set in the syringe pump 100 and the start switch 117 is pressed to start the liquid feeding operation of the syringe pump 100, the operation state display area 403 is displayed in step S501. Display in normal mode. Specifically, the display of the operation state display area 403 is controlled so that the green lighting area appears to move in a predetermined direction.

  FIG. 6A is a diagram illustrating an example of display contents on the liquid crystal display unit 118 when the operation state display area 403 is displayed in the normal mode. As shown in FIG. 6A, first, a part of each side (portions 601, 611, 621, 631 constituted by LEDs) in the operation state display region 403 located at the peripheral edge of the rectangular liquid crystal display unit 118 is green. (See (i)). Subsequently, after a predetermined time (seconds), a part of each side that is different from the part initially displayed in green (parts 602, 612, 622, 632) is displayed in green, and is first displayed in green. The displayed portion is changed to a white display (see (ii)). Furthermore, after a predetermined time, a part (parts 603, 613, 623, 633) which is a part of each side and is different from the part displayed in green in the first time and the second time is displayed in green, and green in the second time. The portion displayed in is changed to a white display (see (iii)). Thereafter, these displays are repeated. This predetermined time (second) preferably corresponds to the liquid feeding speed (mL / h), and is set to be short when the liquid feeding speed is high and to be long when the liquid feeding speed is low. It is because the state of liquid feeding can be easily visually recognized by setting as such.

  By controlling the display of the operation state display area 403 in this way, for example, when the liquid crystal display unit 118 is viewed from the left (left side of the paper), three green colors arranged from the bottom to the top of the syringe pump 100 are displayed. The lamps appear to turn on and off in sequence.

  Returning to FIG. In step S502, it is determined whether information (update information) to be newly displayed in the information display area 405 has been received. If it is determined in step S502 that update information has been received, the character display in the information display area 405 is updated with the received update information, and the process proceeds to step S504 (that is, the information display area 405 displays the character information. Functioning as a display area). On the other hand, if it is determined in step S502 that update information has not been received, the process directly proceeds to step S504.

  In step S504, it is determined whether or not alarm information (information that requires the operation indicator to light or blink red in a conventional syringe pump) is received. If it is determined in step S504 that no alarm information has been received, the process proceeds to step S511.

  On the other hand, if it is determined in step S504 that alarm information has been received, the process proceeds to step S505. In step S505, the type of received alarm information is determined. As a result of the determination in step S505, if it is determined that the obstruction is abnormal, the process proceeds to step S506.

  In step S506, the operation state display area 403 is displayed in the blockage abnormality mode. Specifically, the display of the operation state display area 403 is controlled so that the operation state display area 403 is always lit red.

  FIG. 6B is a diagram illustrating an example of display contents when the operation state display area 403 is displayed in the blockage abnormality mode. As shown in (A) of FIG. 6B, a part of all sides of the operation state display area 403 located at the peripheral edge of the rectangular liquid crystal display unit 118 is displayed in red.

  By controlling the display of the operation state display area 403 in this way, for example, when the liquid crystal display unit 118 is viewed from the left (left side of the paper), it looks as if the red lamp is always lit. It becomes like this.

  Returning to FIG. As a result of the determination in step S505, when it is determined that the remaining amount of the contents in the syringe S is equal to or less than the predetermined value, the process proceeds to step S507.

  In step S507, the operation state display area 403 is displayed in the remaining amount abnormality mode. Specifically, the display of the operation state display area 403 is controlled so that the red lighting area appears to operate in a predetermined direction.

  FIG. 6B is a diagram illustrating an example of display contents when the operation state display area 403 is displayed in the remaining amount abnormality mode. As shown in (B) of FIG. 6B, a part (parts 601, 611, 621, 631) of each side is displayed in red in the operation state display region 403 located at the periphery of the rectangular liquid crystal display unit 118. (See (i)). Subsequently, after a predetermined time (seconds), a part of each side that is different from the part initially displayed in red (parts 602, 612, 622, 632) is displayed in red, and the part first displayed in red Change the displayed part to white. (See (ii)). Further, after a predetermined time (seconds), a part (parts 603, 613, 623, 633) which is a part of each side and is different from the part displayed in red at the first time and the second time is displayed in red and 2 The portion displayed in red for the second time is changed to white display (see (iii)). Thereafter, these displays are repeated. This predetermined time (second) preferably corresponds to the liquid feeding speed (mL / h), and is set to be short when the liquid feeding speed is high and to be long when the liquid feeding speed is low. It is because the state of liquid feeding can be easily visually recognized by setting as such.

  By controlling the display of the operation state display area 403 in this way, for example, when the liquid crystal display unit 118 is viewed from the left (left side of the paper), three syringes arranged from the bottom to the top of the syringe pump 100 are arranged. The red lamp will appear to turn on and off in sequence.

  Returning to FIG. If it is determined in step S505 that the clutch is abnormal, the process proceeds to step S508.

  In step S508, the operation state display area 403 is displayed in the clutch abnormality mode. Specifically, the display of the operation state display area 403 is controlled so that the operation state display area 403 appears to blink red.

  FIG. 6C is a diagram illustrating an example of display contents when the operation state display area is displayed in the clutch abnormality mode. As shown in (C) of FIG. 6B, a part of all sides of the operation state display area 403 located at the peripheral edge of the rectangular liquid crystal display unit 118 is displayed in red (see (i)). Further, after a predetermined time, all sides are changed to white (see (ii)). Thereafter, these displays are repeated.

  By controlling the display of the operation state display area 403 in this way, for example, when the liquid crystal display unit 118 is viewed from the left (left side of the paper), it looks as if the red lamp is blinking. become.

  Returning to FIG. In step S509, the alarm information received in step S504 is displayed in the information display area 405 as character information. In step S510, it is determined whether or not the abnormal state indicated by the alarm information received in step S504 has been resolved.

  If it is determined in step S510 that the abnormal state has been resolved, the process returns to step S501. On the other hand, if it is determined in step S510 that the abnormal state has not been resolved, the process proceeds to step S511.

  In step S511, it is determined whether the liquid feeding operation by the syringe pump 100 has been completed. If it is determined that the liquid feeding operation has not been completed, the process returns to step S504. On the other hand, if it is determined that the process has been completed, the display control process during the liquid feeding operation is terminated.

  As is clear from the above description, in the syringe pump according to the present embodiment, an optical member made of a light diffusing member is arranged on the peripheral portion of the display panel on the operation panel, which is the same as the lighting state of the conventional operation indicator. Thus, it was set as the structure which controls the display of the display panel located directly under the said optical member.

  As a result, the same lighting state as that of the conventional operation indicator can be viewed from any direction (similar to the conventional operation indicator). That is, it is possible to replace the conventional operation indicator disposed on the operation panel of the syringe pump with the liquid crystal display unit.

[Second Embodiment]
In the first embodiment, when the light diffusing member is disposed on the peripheral portion of the liquid crystal display unit, the optical member having the central portion opened is used. However, the present invention is not limited to this, and the central member is provided. An optical member may be used.

  FIG. 7 is a view showing an optical member 700 attached to the display panel 401 of the syringe pump according to the present embodiment.

  As shown in FIG. 7, the optical member 700 includes a light diffusing member 701 disposed at the peripheral edge of the liquid crystal display unit 118 and a central member 702 disposed at the center position of the liquid crystal display unit 118. The central member 702 is configured by a surface substantially parallel to the display surface of the display panel 401, and the light emitted from the display panel 401 (the central portion of the display panel 401) located directly below the central member 702 is directed upward. Make it transparent.

  The light diffusing member 701 is a transparent resin containing a light diffusing agent. Examples of the transparent resin include polystyrene resin, methacrylic resin, polycarbonate resin, ABS resin (acrylonitrile-styrene-butadiene copolymer resin), MS resin (methacrylic acid). Methyl-styrene copolymer resin), AS resin (acrylonitrile-styrene copolymer resin), polyolefin resin such as polyethylene and polypropylene, or thermoplastic resin such as olefin resin.

  The light diffusing agent has a refractive index difference with the transparent resin of usually 0.01 to 0.3, preferably 0.05 to 0.2, and a weight average particle diameter of usually 1 μm to 15 μm, preferably 2 μm to It is assumed that it is 10 μm. This is because the light emitted from the LED can be efficiently diffused by adopting such a configuration.

  Incompatible materials with transparent resins are used, such as inorganic particles such as glass beads, silica particles, aluminum hydroxide particles, calcium carbonate particles, barium carbonate particles, titanium oxide particles, talc, and styrene resin particles. Organic particles such as acrylic resin particles and silicone particles are used. In addition, content of a light-diffusion agent is 0.1 mass part-10 mass parts normally with respect to 100 mass parts of transparent resin, for example, Preferably it is 0.3 mass part-7 mass parts. It is because the light emission by LED can be efficiently light-diffused by setting to such content.

  On the other hand, the light diffusing member 701 has an arcuate shape or a chamfered shape toward the outside, whereby the light emitted from the operation state display area 403 is diffused and emitted toward the outside direction. It becomes.

  As a result, the light emitted from the operation state display area 403 is visually recognized by the user located in the outer direction (the arrow 404 indicates the visible range at this time). Further, light emitted from the information display area 405 is transmitted upward, and information displayed in the information display area 405 is visually recognized by a user located in front of the liquid crystal display unit 118.

[Third Embodiment]
In the first embodiment, the light diffusing member is formed so that the light emitted from the operation state display region is diffused and emitted outward, but the present invention is not limited to this, The light diffusing member may be formed so that light is emitted in both the outer direction and the inner direction. By forming the light diffusing member so as to be radiated in both the outer direction and the inner direction, only one of the opposite sides of the operation state display region located at the peripheral edge of the rectangular liquid crystal display unit is provided. This is because it is possible to replace the conventional operation indicator only by controlling the display.

1. Detailed Configuration of Liquid Crystal Display Unit FIG. 8 is a diagram for explaining the detailed configuration of the liquid crystal display unit 118 in the present embodiment. As shown in FIG. 8A, the liquid crystal display unit 118 includes a display panel 401 and an optical member 800, and the optical member 800 is configured by a light diffusing member arranged along the peripheral edge of the display panel 401. ing. As shown in FIG. 8B, the optical member 800 has a shape with an open center.

  The optical member 800 is a transparent resin containing a light diffusing material. Examples of the transparent resin include polystyrene resin, methacrylic resin, polycarbonate resin, ABS resin (acrylonitrile-styrene-butadiene copolymer resin), MS resin (methacrylic acid). Methyl-styrene copolymer resin), AS resin (acrylonitrile-styrene copolymer resin), polyolefin resin such as polyethylene and polypropylene, or thermoplastic resin such as olefin resin.

  The light diffusing agent has a refractive index difference with the transparent resin of usually 0.01 to 0.3, preferably 0.05 to 0.2, and a weight average particle diameter of usually 1 μm to 15 μm, preferably 2 μm to It is assumed that it is 10 μm. This is because the light emitted from the LED can be efficiently diffused by adopting such a configuration.

  Incompatible materials with transparent resins are used, such as inorganic particles such as glass beads, silica particles, aluminum hydroxide particles, calcium carbonate particles, barium carbonate particles, titanium oxide particles, talc, and styrene resin particles. Organic particles such as acrylic resin particles and silicone particles are used. In addition, content of a light-diffusion agent is 0.1 mass part-10 mass parts normally with respect to 100 mass parts of transparent resin, for example, Preferably it is 0.3 mass part-7 mass parts. It is because the light emission by LED can be efficiently light-diffused by setting to such content.

  8C and 8D are views showing a CC cross section and a DD cross section of FIG. 8B, respectively. As shown in FIGS. 8C and 8D, the light diffusing member has a shape that draws an arc at the peripheral edge of the display panel. By having such a shape, the light emitted from the operation state display region 403 is diffused and emitted toward both the outer side and the inner side.

  As a result, even if the user is located at any position in the outer direction, the light emitted from the display panel 401 located directly below the optical member 800 can be visually recognized (the arrow 804 indicates the visible range). ing).

2. Display Example of Liquid Crystal Display Unit 118 During Liquid Feeding Operation of Syringe Pump 100 FIGS. 9A and 9B are diagrams showing display examples on the liquid crystal display unit 118 during liquid feeding operation of the syringe pump 100. FIG. 9A shows an example of the display contents when the operation state display area 403 is displayed in the normal mode.

  As shown in FIG. 9A, in the normal mode, first, a part (parts 621 and 631) of one side of the operation state display region 403 located at the peripheral part of the rectangular liquid crystal display unit 118 that is opposite to each other is displayed. Displayed in green (see (i)). Subsequently, after a predetermined time (seconds), a portion of one of the sides facing each other, which is different from the portion that was initially displayed in green (portions 622 and 632), is displayed in green. The portion displayed in green is changed to white display (see (ii)). Further, after a predetermined time (seconds), a part (parts 623, 633) that is a part of one of the sides facing each other and different from the part displayed in green in the first and second times is displayed in green. The portion displayed in green for the second time is changed to white display (see (iii)). Thereafter, these displays are repeated. This predetermined time (second) preferably corresponds to the liquid feeding speed (mL / h), and is set to be short when the liquid feeding speed is high and to be long when the liquid feeding speed is low. It is because the state of liquid feeding can be easily visually recognized by setting as such.

  By controlling the display of the operation state display area 403 in this way, for example, when the liquid crystal display unit 118 is viewed from the left or the right, three green colors arranged from the bottom to the top of the syringe pump 100 are displayed. The lamps appear to turn on and off in sequence.

  FIG. 9B is a diagram showing an example of display contents when the operation state display area 403 is displayed in the blockage abnormality mode. As shown in (A) of FIG. 9B, a part of one of the opposing sides of the operation state display region 403 located at the peripheral portion of the rectangular liquid crystal display unit 118 is displayed in red.

  By controlling the display of the operation state display area 403 in this way, for example, when the liquid crystal display unit 118 is viewed from the left or right side, it looks as if the red lamp is always lit. become.

  FIG. 9B is a diagram illustrating an example of display contents when the operation state display area 403 is displayed in the remaining amount abnormality mode. As shown in (B) of FIG. 9B, in the remaining amount abnormality mode, a part (part 621) of one side of the operation state display region 403 located at the peripheral portion of the rectangular liquid crystal display unit 118 that faces each other. , 631) are displayed in red (see (i)). Subsequently, after a predetermined time (seconds), a portion of one of the sides facing each other, which is different from the portion initially displayed in red (portions 622 and 632), is displayed in red. The portion displayed in red is changed to white display (see (ii)). Further, after a predetermined time (seconds), a portion of one of the sides facing each other, which is different from the portion displayed in red at the first time and the second time (portions 623 and 633), is displayed in red. The portion displayed in red for the second time is changed to white display (see (iii)). Thereafter, these displays are repeated. This predetermined time (second) preferably corresponds to the liquid feeding speed (mL / h), and is set to be short when the liquid feeding speed is high and to be long when the liquid feeding speed is low. It is because the state of liquid feeding can be easily visually recognized by setting as such.

  By controlling the display of the operation state display area 403 in this way, for example, when the liquid crystal display unit 118 is viewed from the left, three red lamps arranged from the bottom to the top of the syringe pump 100 are arranged. However, it will look the same as turning on / off sequentially.

  FIG. 9C is a diagram showing an example of display contents when the operation state display area 403 is displayed in the clutch abnormality mode. As shown in (C) of FIG. 9B, in the clutch abnormality mode, in the operation state display region 403 located at the peripheral portion of the rectangular liquid crystal display unit 118, a part of one side opposite to each other is red. Display (see (i)). Further, after a predetermined time, the color is changed to white (see (ii)). Thereafter, these displays are repeated.

  By controlling the display of the operation state display area 403 in this way, for example, when the liquid crystal display unit 118 is viewed from the left or right side, it looks like the red lamp is blinking. Become.

  As is clear from the above description, in the syringe pump according to the present embodiment, the liquid crystal display unit on the operation panel has a semicircular cross section and emits light in both the outer and inner directions. The light diffusing member is arranged.

  As a result, the same effect as that of the first embodiment can be obtained only by controlling the display of only one side of the operation state display region located at the peripheral edge of the rectangular liquid crystal display unit. It became possible to do.

[Other Embodiments]
In the first to third embodiments, the liquid crystal display unit has been described as an example. However, the present invention is not limited to the liquid crystal display unit, and may be another display unit. In the first to third embodiments, three types of alarm information have been described. However, the alarm information of the present invention is not limited to the above three types. Furthermore, the display position, color scheme, display timing, etc. of the operation state display area are not limited to the above description.

100: Syringe pump, 110: Operation panel, 111: Voltage drop lamp, 112: Battery lamp, 113: Power switch, 114: Blocking level lamp, 115: Clamp abnormality lamp, 116: Flow rate setting value display section, 117: Start switch 118: Liquid crystal display unit, 120: Syringe fixing unit, 121: Clamp, 122: Support base, 123: Recess, 130: Slider assembly, 131: Clutch lever, 132 · 133: Left and right hooks, 134: Lamp, 136: Contact part 401: Display panel 402: Optical member 403: Operating state display area 404: Visible range 405: Information display area 701: Light diffusion member 702: Center member 800: Optical member 804: Visible range

Claims (4)

An infusion device for delivering a chemical solution at a predetermined injection rate,
A first area that displays the operation state for the operation of sending out the chemical solution by at least character information, and a first area that is located on the outer periphery of the first region and that displays the operation state for the operation of sending out the chemical solution by color information. A display unit having two regions;
An optical member having a diffusing member disposed on the second region and diffusing the light emitted from the second region in the outer direction of the display unit;
A display control unit that controls display of the display unit so that a color corresponding to the operation state is displayed at all times or every predetermined time in at least a part of the second region in which the diffusion member is disposed. An infusion device comprising:   The infusion device according to claim 1, wherein the optical member further includes a central member that is disposed on the first region and transmits light emitted from the first region.   2. The infusion device according to claim 1, wherein the diffusion member included in the optical member diffuses light emitted from the second region in an outer direction and an inner direction of the display unit.   In the case where the second region has sides facing each other, the display control unit includes the operation state on at least a part of one side of the second region facing each other. The infusion device according to claim 3, wherein display of the display unit is controlled so that a color corresponding to the color is displayed constantly or at predetermined time intervals.

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