WO2012120764A1 - Medical pump - Google Patents

Abstract

[Problem] To provide a medical pump that eliminates the setting of unintentionally high drug solution flow rates or the mistaken setting of an unintended flow rate when a health care provider rotates the setting dial, and facilitates fine adjustments of drug solution flow rates. [Solution] The medical pump (1) for delivering a drug solution to a patient is equipped with a drug solution flow rate-setting unit (900) for setting the flow rate for delivering the drug solution to the patient. Said drug solution flow rate-setting unit (900) is rotatably installed on a shank (907) provided on the main body (2) of the medical pump (1). The unit comprises a setting dial (901) where the drug solution flow rate can be set by being rotated, and a setting dial rotation sensitivity-adjusting unit (920) that is disposed on the main body (2) and is for adjusting the torque required to rotate the setting dial (901).

Description

Medical pump

The present invention relates to a medical pump for delivering a chemical solution to a patient.

As a medical pump, for example, a syringe pump is used in, for example, an intensive care unit (ICU) and the like, and a liquid feeding treatment of a liquid medicine such as an anticancer agent, an anesthetic agent, a chemotherapeutic agent, a blood transfusion, etc. to a patient. Is used for a relatively long time with high accuracy. The syringe liquid flow rate control is precise and superior compared to other infusion pumps.
That is, the syringe body filled with the drug solution is set so as not to move using the clamp with respect to the syringe pump, and the syringe pump presses the syringe pusher to accurately deliver the drug solution in the syringe body to the patient side. (See Patent Document 1).

Japanese Patent No. 3299094

By the way, as an operation part for the medical staff to set and operate the flow rate of the chemical solution in the syringe pump described above, a push switch type which is arranged on the operation panel surface and performs an increase / decrease operation of the flow rate of the chemical solution, and an endless rotation There is a dial system that operates to increase or decrease the flow rate of the chemical solution.
The push switch type operation unit has multiple digit buttons, such as a single digit button, a ten digit button, and a hundred digit button. If the worker makes a mistake in pressing the button, the setting of the flow rate value of the chemical solution may be inconsistent, and the setting operability of the flow rate value is low.
On the other hand, in the case of a dial-type operation unit, a medical worker can increase the flow rate of the chemical solution little by little by rotating the dial with his finger. Therefore, from the viewpoint of safety when setting the flow rate value, it is more useful than a push switch type operation unit.

However, when a medical worker uses a dial type operation unit, the dial can be rotated endlessly. The operation feeling (rotation operation force) of the dial rotation obtained by the medical staff is always constant regardless of the rotation position of the dial. For this reason, a medical worker may rotate the dial too much, and may unexpectedly set a high flow rate chemical or set the flow rate unintentionally.
Therefore, the present invention eliminates the possibility of unintentionally setting a high flow rate chemical solution or accidentally setting an unintended flow rate when the medical staff rotates the setting dial. An object of the present invention is to provide a medical pump that can be easily adjusted.

The medical pump according to the present invention is a medical pump for sending a chemical solution to a patient, and includes a flow rate setting unit for setting a flow rate for sending the chemical solution to the patient, and setting the flow rate of the chemical solution The unit is rotatably attached to a shaft portion provided in the main body of the medical pump, and a setting dial capable of setting the flow rate of the chemical liquid by rotating operation, and a dial disposed on the main body, A rotation operation feeling adjustment unit of a setting dial for adjusting a torque required for the rotation operation;
According to the above configuration, when the medical staff rotates the setting dial, it is possible to prevent the accidental setting of a high flow rate chemical solution or an accidental setting to an unintended flow rate. Easy to adjust. That is, when the medical staff rotates the setting dial, it is possible to set the chemical solution at a high flow rate or change the operational feeling of the setting dial around the flow rate range of the chemical solution that is not normally set. Therefore, it is possible to prevent a high flow rate chemical solution from being set or a flow rate not set by mistake.

Preferably, a detection unit that detects a rotation speed and a rotation direction of the setting dial is provided between the setting dial and the main body, and the detection unit includes an S pole and an N pole arranged in the setting dial. It has a permanent magnet in which poles are alternately arranged, and a pair of magnetic detection sensors that are arranged on the main body side and detect magnetic force from the permanent magnet to generate two different output waveforms.
According to the above configuration, by rotating the setting dial, the pair of magnetic detection sensors detect the change in the magnetic force of the permanent magnet and generate two different output waveforms. The number of rotations and the direction of rotation can be detected.

Preferably, the rotational operation feeling adjustment unit of the setting dial includes a driving unit disposed on the main body side, and an engagement member that is engaged with the output shaft of the driving unit and pressed against the setting dial side. The output shaft and the engagement member convert the rotation operation of the output shaft into a linear movement operation in a direction parallel to the direction of the shaft portion, and press the engagement member against the setting dial side. It is characterized in that it constitutes a rotational motion-linear motion conversion section for adjusting the torque required for the rotational operation of the setting dial.
According to the above configuration, the engagement member can move linearly by rotating the output shaft of the drive unit. Therefore, the engagement member can adjust the torque required for the rotation operation of the setting dial by changing the force applied to the setting dial. When the user rotates the setting dial, the operation feeling of the setting dial can be changed.

Preferably, an elastically deformable torque adjusting member is disposed between the meshing member and the setting dial.
According to the above configuration, since the engagement member is not directly pressed against the setting dial but via the torque adjustment member, the torque required for the rotation operation of the setting dial can be finely adjusted.
Preferably, the rotational operation feeling adjusting unit of the setting dial adjusts the amount of current supplied to the electromagnet arranged on the main body side and the coil of the electromagnet, and the electromagnet controls the permanent magnet of the setting dial. And a control unit that adjusts a magnetic attraction force attracted to the main body side to adjust a torque required for the rotation operation of the setting dial.
According to the above configuration, the amount of current supplied to the coil of the electromagnet is adjusted, the magnetic magnet attracting the permanent magnet of the setting dial to the main body side is adjusted, and the torque required for the rotation operation of the setting dial is adjusted It is possible to change the operational feeling of the setting dial when the medical staff rotates the setting dial.

Preferably, the medical pump is a syringe pump that is attached to a syringe filled with the medicinal solution and sends the medicinal solution in the syringe to a patient.
According to the above configuration, when the medical staff rotates the setting dial of the syringe pump, the operation feeling of the setting dial can be changed, and a high flow rate chemical solution is unexpectedly set or the flow rate is not intended by mistake. It is possible to eliminate the setting.
Preferably, the medical pump is an infusion pump that holds and holds an infusion pipe through which the medicinal solution passes, and sends the medicinal solution to the patient through the infusion pipe.
According to the above configuration, when the medical staff rotates the setting dial of the infusion pump, the operation feeling of the setting dial can be changed, and a high flow rate chemical solution can be set unexpectedly or an unintended flow rate can be set. It is possible to eliminate the setting.

The present invention eliminates the possibility of unintentionally setting a high flow rate chemical solution or setting it to an unintentional flow rate when a medical worker rotates the setting dial, and allows fine adjustment of the flow rate of the chemical solution. Therefore, it is possible to provide a medical pump that can be easily performed.

The perspective view which shows preferable embodiment of the syringe pump which is an example of the medical pump of this invention. The perspective view which looked at the syringe pump shown in FIG. 1 from the W direction. The perspective view which shows the example of the syringe of several types of magnitude | sizes. The figure which shows the electrical structural example in a syringe pump. The perspective view which shows the syringe setting part and syringe pusher drive part which are shown in FIG. The disassembled perspective view which shows the structure of the flow volume setting part of a chemical | medical solution. The figure which shows the cross-section in the AA of the flow volume setting part of the chemical | medical solution shown in FIG. The figure which shows a permanent magnet, a magnetic member, and a Hall IC unit. FIG. 9A shows sensor output waveforms H1 and H2 output by the Hall IC, and FIG. 9B shows an angle display in the permanent magnet. The figure which shows the example of a relationship between the setting flow torque (rotation torque) which the rotation operation feeling adjustment part of a setting dial shown in FIG. 7 gives with respect to a setting dial, and the rotation speed (setting flow) of a setting dial. The figure which shows the cross-section which shows the structure of the flow volume setting part of the chemical | medical solution in another embodiment of this invention. Fig. 12 (A) is a perspective view showing an infusion pump which is another example of the medical pump of the present invention, and Fig. 12 (B) shows an infusion pump which is another example of the medical pump of the present invention. FIG. The perspective view which shows the state which opened the cover member of the infusion pump of FIG. The figure which shows the example which mounted the syringe pump and infusion pump which are medical pumps in the setting stand.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
The embodiments described below are preferred specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these embodiments.
FIG. 1 is a perspective view showing a preferred embodiment of a syringe pump as an example of the medical pump of the present invention. FIG. 2 is a perspective view of the syringe pump shown in FIG. 1 as viewed from the W direction.

A syringe pump 1 which is an example of a medical pump shown in FIGS. 1 and 2 is used, for example, in an intensive care unit (ICU, CCU, NICU) or the like, and is used for anticancer agents, anesthetics, and chemotherapy for patients. It is a micro continuous infusion pump that is used for performing micro infusion treatment of a drug solution such as a drug, blood transfusion, etc. for a relatively long time with high accuracy. The syringe pump 1 is used for selecting a chemical solution to be used from a chemical solution library and feeding the selected chemical solution. This chemical solution library is chemical solution information that is a group for setting a chemical solution including a pre-registered chemical solution name in the chemical solution library database (DB). By using this medical solution library, a medical worker does not have to perform complicated administration settings each time, and can select a medical solution and set a chemical solution.

As shown in FIGS. 1 and 2, the syringe pump 1 can be set so that the syringe body 201 of the syringe 200 filled with, for example, a chemical solution does not move using the clamp 5. The syringe pump 1 presses the syringe pusher 202 of the syringe 200 in the T direction so that the drug solution in the syringe body 201 is accurately applied to the patient P via the tube 203 and the indwelling needle 204 as shown in FIG. The liquid is to be sent to
The syringe pump 1 has a main body cover 2 which is also called a main body, and the main body cover 2 is integrally formed of a molded resin material having chemical resistance, and enters the inside of the syringe pump 1 even if a chemical solution or the like is applied. It has a splash-proof treatment structure that can prevent this. As described above, the cover 2 has the splash-proof treatment structure because the liquid medicine in the syringe body 201 is spilled, the drip liquid disposed above is spilled off, or the disinfectant liquid used in the vicinity is scattered. It is because it may adhere.

First, the elements disposed on the body cover 2 of the syringe pump 1 will be described.
As shown in FIGS. 1 and 2, the syringe pump 1 has a main body cover 2 and a handle 2T, and the handle 2T can be extended in the N direction or stored in the T direction. In the upper part 2A of the main body cover 2, a display unit 3, an operation panel unit 4, and a chemical flow rate setting unit 900 are arranged. The chemical flow rate setting unit 900 is provided on the inclined side surface portion 899 of the upper portion 2A, and is positioned below the handle 2T. A chemical is also called a drug.
A syringe setting unit 6 and a syringe pusher drive unit 7 for pushing the syringe pusher 202 are disposed in the lower portion 2B of the main body cover 2. Thereby, the medical worker can perform the liquid feeding operation of the chemical solution from the syringe 200 while confirming the information on the display unit 3 of the upper portion 2A of the main body cover 2. Then, the medical staff can operate the operation buttons on the operation panel unit 4 while checking the information on the display unit 3 of the upper portion 2A of the main body cover 2.

The display unit 3 is an image display device capable of color display, for example, a color liquid crystal display device is used. This display unit 3 can display not only information notation in Japanese but also information in a plurality of foreign languages as required. The display unit 3 is located at the upper left position of the upper portion 2 </ b> A of the main body cover 2 and above the syringe setting unit 6 and the syringe pusher driving unit 7. The operation panel unit 4 is disposed on the right side of the display unit 3 in the upper portion 2A of the main body cover 2, and the operation panel unit 4 includes operation buttons such as a pilot lamp 4A, a fast-forward switch button 4B, and a start switch in the illustrated example. A button 4C, a stop switch button 4D, a menu selection button 4E, and the like are arranged. The power switch button is arranged in another part of the main body cover 2.

The display part 3 shown in FIG. 2 is covered with a polyester film, for example, and has a gloss. On the other hand, the surface of the operation panel unit 4 is subjected to, for example, matte processing. The upper portion 2 </ b> A of the main body cover 2 is an upper half portion of the main body cover 2. The lower part 2 </ b> B of the main body cover 2 is a lower half part of the main body cover 2. A mark of the pump can be displayed by applying or painting a seal material of a color different from the surface color of the main body cover 2, for example, a yellow or red seal material, on or around the main body cover 2. . By providing this pump mark, when a plurality of syringe pumps 1 are used in a stacked manner, or when this syringe pump 1 and other types of pumps such as an infusion pump are used in a stacked manner, There is an advantage that the boundary is visually clarified.

As shown in FIGS. 1 and 2, the syringe setting unit 6 and the syringe pusher drive unit 7 are arranged side by side along the X direction. For example, the syringe setting unit 6 selects a required amount of syringe from a plurality of types of syringes 200, 300, and 400, which will be described later with reference to FIG. be able to.
FIGS. 1 and 2 represent an example in which the syringe 200 having the largest capacity among the plurality of types of syringes 200, 300, 400 is mounted so as not to move by the biasing force received from the clamp 5. It shows.
The syringe setting unit 6 shown in FIG. 1 and FIG. 2 has a body flange grip for fitting and gripping the housing portion 8 for housing the syringe body 201, the clamp 5, and the body flange 209 (see FIG. 3) of the syringe 200. Part 500. The accommodating part 8 has a concave syringe body holding part 8D. A wall portion 8W is provided at the left end of the accommodating portion 8, and a tube fixing portion 9 for detachably sandwiching the tube 203 is formed on the wall portion 8W. The tube fixing portion 9 is a groove portion that sandwiches and fixes a part of the tube 203.

1 and 2, when a medical worker operates the clamp 5 and removes the syringe 200 from the syringe setting unit 6, the clamp 5 is against the force of a spring (not shown) in the Y1 direction (frontward direction). The clamp 5 is separated from the outer peripheral surface of the syringe body 201 by pulling and turning 90 degrees in the R1 direction. As a result, the syringe body 201 can be released from the syringe body holding portion 8D of the housing portion 8 and the tube 203 can be removed from the tube fixing portion 9 by releasing the fixation by the clamp 5.
Further, when the clamp 5 is operated and the syringe 200 is accommodated and attached in the accommodating portion 8 of the syringe setting portion 6, the clamp 5 is pulled in the Y1 direction against the force of a spring (not shown) to be 90 in the R2 direction. The syringe body 201 is housed in the syringe body holding part 8D of the housing part 8 and the tube 203 is fitted in the tube fixing part 9 by rotating it and returning to the Y2 direction by the force of the spring. 5 can be fixed.

As shown in FIGS. 1 and 2, when the syringe body 201 is housed and mounted in the syringe body holding section 8D of the housing section 8, the syringe pusher 202 is disposed in the syringe pusher drive section 7. . The syringe pusher drive unit 7 has a slider 10. The slider 10 pushes the pusher flange 205 of the syringe pusher 202 little by little along the T direction relative to the syringe body 201 in accordance with a command from the control unit 100 shown in FIG. Thereby, the chemical | medical solution in the syringe main body 201 can be sent with high precision over the comparatively long time with respect to the patient P through the tube 203 and the indwelling needle 204. FIG. Note that the X direction, the Y direction, and the Z direction in FIGS. 1 and 2 are orthogonal to each other, and the Z direction is the vertical direction.
The display contents of the chemical information in the display unit 3 shown in FIG. 2 include, for example, an occlusion pressure level display, a display column for a planned amount of drug administration (mL), a display column for an integrated amount of drug administration (mL), and a display of charge history. Columns, voltage drop display columns, flow columns (mL), and other display columns can be displayed in color.

FIG. 3 is a perspective view showing an example of the above-described multiple types of syringes.
1 and 2 show an example in which a syringe 200 having the largest amount of medicinal solution is fixed. The syringe 200 having the largest chemical solution capacity shown in FIG. 3A has a syringe body 201 and a syringe pusher 202, the syringe body 201 has a body flange 209, and the syringe pusher 202 is pushed. A child flange 205 is provided. The syringe body 201 has a medicinal liquid scale 210. One end of a flexible tube 203 is detachably connected to the outlet 211 of the syringe body 201.
A syringe 300 having a medium amount of chemical solution shown in FIG. 3B has a syringe body 301 and a syringe pusher 302, the syringe body 301 has a body flange 309, and the syringe pusher 302 is A pusher flange 305 is provided. The syringe main body 301 is formed with a scale 310 of a chemical solution. One end of a flexible tube 203 is detachably connected to the outlet 311 of the syringe body 301.

The syringe 400 with the smallest amount of chemical solution shown in FIG. 3C has a syringe body 401 and a syringe pusher 402, the syringe body 401 has a body flange 409, and the syringe pusher 402 has a pusher. A child flange 405 is provided. The syringe body 401 is formed with a medicinal scale 410. One end of a flexible tube 203 is detachably connected to the outlet 411 of the syringe body 401.
The syringe 200 shown in FIG. 3 (A) has, for example, a storage capacity of 10 mL, and the syringe 300 shown in FIG. 7 (B) has, for example, a storage capacity of 5 mL, and the syringe shown in FIG. 7 (C). 400 is, for example, 2.0 mL of a chemical solution. The syringe bodies 301 and 401 of the syringes 300 and 400 can be housed and fixed in the syringe body holding section 8D of the housing section 8 in the same manner as the syringe 200 shown in FIGS.
However, although three types of syringes are illustrated in FIG. 3, the present invention is not limited to this, and the amount of chemical liquid that can be stored in the syringe may be 2.5 to 50 mL, for example, 20 mL, 30 mL, 50 mL, etc. The capacity of the syringe can be arbitrarily selected.

Next, with reference to FIG. 4, an example of the electrical configuration of the syringe pump 1 shown in FIGS. 1 and 2 will be described.
In FIG. 4, the syringe pump 1 has a control unit (computer) 100 that controls the overall operation. The control unit 100 is, for example, a one-chip microcomputer, and includes a ROM (Read Only Memory) 101, a RAM (Random Access Memory) 102, a nonvolatile memory 103, a clock 104, and a counter circuit 109. The clock 104 can correct the current time by a predetermined operation, and can acquire the current time, measure the elapsed time of a predetermined liquid feeding operation, measure the reference time of liquid feeding speed control, and the like.

The control unit 100 shown in FIG. 4 is connected to a power switch button 4S and a switch 111. The switch 111 supplies power to the control unit 100 from either the power converter unit 112 or the rechargeable battery 113 by switching between the power converter unit 112 and the rechargeable battery 113 such as a lithium ion battery. The power converter unit 112 is connected to a commercial AC power source 115 via an outlet 114.
In FIG. 4, a pair of detection switches 120 and 121 are arranged in the accommodating portion 8. The detection switches 120 and 121 detect whether or not the syringe body 201 of the syringe 200 is correctly arranged in the storage unit 8 and notify the control unit 100 of it.

A potentiometer 122 as a clamp sensor shown in FIG. 4 is connected to the clamp 5. The potentiometer 122 detects the amount of movement of the clamp 5 when the clamp 5 moves in the Y2 direction in a state where the syringe body 201 is clamped by the clamp 5. 401) sends a detection signal to the control unit 100 to notify whether it is clamped by the clamp 5 or not. The control unit 100 obtains the amount of movement of the clamp 5 in the Y direction based on the detection signal from the potentiometer 122, and for example, which of the multiple types of syringe bodies 201, 301, 401 shown in FIG. Can be determined.
When the motor 133 of the syringe pusher drive unit 7 shown in FIG. 4 is driven by the motor driver 134 in response to a command from the control unit 100, the feed screw 135 is rotated to move the slider 10 in the T direction. As a result, the slider 10 presses the syringe pusher 202 in the T direction, and accurately sends the drug solution in the syringe main body 201 shown in FIG. 2 to the patient P through the tube 203 via the indwelling needle 204. .

In FIG. 4, the display driver 130 drives the display unit 3 according to a command from the control unit 100 to display various information, notification contents, and the like. The speaker 131 can notify various notification contents by voice according to a command from the control unit 100.
The control unit 100 can communicate bidirectionally with a computer 141 such as a desktop computer through the communication port 140. The computer 141 is connected to a chemical solution database (DB) 150, and the chemical solution information MF stored in the chemical solution database 150 is acquired by the control unit 100 via the computer 141, and the nonvolatile information of the control unit 100 is stored. It can be stored in the memory 103. The control unit 100 can display the chemical information MF and the like on the display unit 3 based on the stored chemical information MF.
In FIG. 4, a fast forward switch button 4B, a start switch button 4C, a stop switch button 4D, and a menu selection button 4E are electrically connected to the control unit 100.
In addition, a photocoupler sensor 250 as a detector for detecting that the main body flange 209 has been inserted is electrically connected to the control unit 100. The photocoupler sensor 250 includes a light emitting element 251 and a light receiving element 252 that receives light from the light emitting element 251.
In FIG. 4, a pair of Hall ICs 611 and 612 of the Hall element IC unit 610 is connected to the counter circuit 109 of the control unit 100.

Next, the structure of the syringe setting unit 6 will be described.
FIG. 5 is a perspective view showing the syringe setting unit 6 and the syringe pusher driving unit 7 shown in FIG.
The syringe setting unit 6 shown in FIG. 5 is a syringe mounting table on which a syringe is placed, and is fixed by fitting the housing unit 8 that houses the syringe body 201, the clamp 5, and the body flange 209 (see FIG. 3) of the syringe 200. It has a main body flange gripping part 500 for this purpose.
As shown in FIG. 5, the accommodating portion 8 of the syringe setting portion 6 is a recess capable of accommodating a part or all of the syringe body 201, and the axial direction of the accommodating portion 8 is along the X direction. In FIG. 1 and FIG. 2, as an example, the syringe body 201 of the syringe 200 having the largest capacity is housed in the housing portion 8. In this example, a part of the outer peripheral surface of the syringe body 201 is held by the syringe body of the housing portion 8. The remaining portion of the outer peripheral surface of the syringe body 201 is exposed to the outside, being in close contact with the inner surface of the portion 8D.

5 is a plastic plate member that can be elastically deformed, and is disposed in parallel to the right side surface portion 8V of the syringe body holding portion 8D of the housing portion 8. The main body flange gripping portion 500 is disposed on a surface formed in the Y direction and the Z direction, and the tip portion 501 is formed between the two protruding portions 502 and 503 and the protruding portions 502 and 503. The concave portion 504 is provided. For example, the main body flange 209 of the syringe 200 shown in FIG. 2 is fitted between the main body flange gripping portion 500 and the right side surface portion 8V and can be securely gripped. Moreover, the photocoupler sensor 250 shown in FIG. 4 detects and notifies the control unit 100 that the main body flange 209 has been fitted and the main body flange 209 has reached a predetermined position.

2 and 5, the syringe pusher drive unit 7 is housed and held in the extension forming part 2 </ b> C of the main body cover 2. The extension forming portion 2C is formed by extending from the lower portion 2B of the main body cover 2 in the X1 direction. As shown in FIG. 2, the extension forming portion 2 </ b> C has an upper side surface portion 701, a lower side surface portion 702, and a right side surface portion 703. The extension forming portion 2C has a space SP surrounded by the upper side surface portion 701, the lower side surface portion 702, the right side surface portion 703, and the right side surface portion 8V of the syringe body holding portion 8D of the storage portion 8. A syringe pusher drive unit 7 is accommodated in the space SP.

A boot 800 as a covering member shown in FIG. 5 covers the periphery of the elements such as the feed screw 135 as shown in FIG. 4, and the right side surface portion 8V of the syringe body holding portion 8D of the housing portion 8 and the slider 10 Arranged between. The boot 800 is made of, for example, rubber or plastic that can be expanded and contracted, and can expand and contract as the slider 10 moves in the X1 direction and the X2 direction. The boot 800 has a splash-proof structure that covers the feed screw 135 and the like. As a result, even if the drug solution in the syringe body 201 is spilled, the drip solution disposed above is spilled down, or the disinfecting solution used in the vicinity is scattered, it adheres to the elements such as the feed screw 135. Can be prevented.
As shown in FIG. 5, the chemical flow rate setting unit 900 is provided on the inclined side surface portion 899 of the upper portion 2A of the main body cover 2 so as to protrude toward the side of the main body cover 2 in the X1 direction. And located below the handle 2T.

Next, the chemical liquid flow rate setting unit 900 shown in FIG. 5 will be described with reference to FIG.
FIG. 6 is an exploded perspective view showing the structure of the chemical liquid flow rate setting unit 900.
As shown in FIG. 6, the chemical flow rate setting unit 900 is provided on the inclined side surface portion 899 of the upper portion 2 </ b> A of the main body cover 2, and the operation panel unit 4 is operated as shown in FIG. 2. Whereas the chemical flow rate setting unit 900 is provided at the position facing the worker, the side surface 899 of the upper part 2A of the main body cover 2 is inclined toward the side. A medical worker on the front side operates with the finger of the right hand. That is, the medical staff uses the finger of the right hand as shown in FIG. 5 to rotate the setting dial 901 of the chemical flow rate setting unit 900 in an endless manner along the clockwise CW or counterclockwise CCW. Thus, the number of rotations and the direction of rotation of the setting dial 901 can be set.

As shown in FIG. 6, the chemical flow rate setting unit 900 includes a disk-shaped setting dial 901, a disk-shaped permanent magnet 902, two disk-shaped splash- proof seal materials 903 and 904, and a magnetic member. 905, a cylindrical hood-shaped accommodation portion 906, a shaft portion 907, and a Hall IC unit 610.
As shown in FIGS. 5 and 6, the accommodating portion 906 is a substantially cylindrical plastic hood portion that protrudes in the X1 direction from the inclined side surface portion 899 of the upper portion 2A. Two splash- proof sealing materials 903 and 904, a magnetic member 905, and a Hall IC unit 610 are accommodated. The accommodating portion 906 covers the peripheral portion of the setting dial 901, reduces the gap between the setting dial 901, and reduces the pop-out amount of the setting dial 901. Preventing contact with the dial.
As shown in FIG. 6, a plurality of convex portions 906A are formed radially inside the accommodating portion 906, and a shaft portion 907 protrudes toward the X1 direction at the central position of these convex portions 906A. It has been. The shaft portion 906 is a solid member made of metal such as iron, and has a small-diameter step portion 906A.

A setting dial 901 shown in FIG. 6 includes a peripheral surface 901A, a plurality of small anti-slip protrusions 901B, eight substantially hemispherical anti-slip protrusions 901C, and a central protrusion 901D having a cross-sectional mountain shape. It has a circular surface portion 901E. The circular surface portion 901E is slightly recessed in the X2 direction so that a finger can easily enter. The central convex portion 901D is formed so as to protrude in the X1 direction at the central portion of the surface portion 901E. The eight convex portions 901C are arranged at equal intervals around the central convex portion 901D at equal intervals, and are formed so as to protrude in the X1 direction.
The plurality of protrusions 901B are formed at equal intervals in the connection portion between the peripheral surface 901A and the surface portion 901E. The plurality of protrusions 901B, the eight protrusions 901C, and the center protrusion 901D are provided when a medical worker rotates the setting dial 901 with a finger in an endless manner along the clockwise CW and the counterclockwise CCW. It is provided so that the finger can be rotated smoothly without slipping.

The permanent magnet 902 shown in FIG. 6 is accommodated in the internal space 901S of the setting dial 901 and is fixed by an adhesive. The splash-proof seal material 903 has a hole 903A through which the shaft portion 907 is passed, and one surface of the splash-proof seal material 903 is an adhesive portion 903B to which an adhesive is applied. The seal member 903 for splash-proofing is applied to the setting dial 901 and the permanent magnet 902 by sticking the adhesive portion 903B side to the setting dial 901 and the permanent magnet 902.
The magnetic member 905 shown in FIG. 6 is made of a magnetic material such as iron and has a plurality of convex portions 905A. These convex portions 905A are formed radially spaced from each other. The plurality of convex portions 905A of the magnetic material 905 are positioned using the plurality of convex portions 906A inside the accommodating portion 906, and are fixed by an adhesive.

As shown in FIG. 6, a cylindrical portion 901 </ b> T at the center projects in the X <b> 2 direction in the internal space 901 </ b> S of the setting dial 901. The cylindrical portion 901T is provided to insert the shaft portion 907 and fix the setting dial 901 to the shaft portion 907 so as to be endlessly rotatable along the clockwise CW and the counterclockwise CCW. . As shown in FIG. 6, the tube portion 901T has a claw portion 901H. The claw portion 901H fits into the step portion 906A of the shaft portion 907, so that the setting dial 901 is moved from the shaft portion 907 in the X1 direction. However, it is attached to the shaft portion 907 so as to be rotatable.
The splash-proof sealing material 904 shown in FIG. 6 has a hole 904A through which the shaft portion 907 passes, and one surface of the splash-proof sealing material 904 is an adhesive portion 904B to which an adhesive is applied. The seal material 904 for splash-proofing is applied to the adhesive portion 904B side with respect to the magnetic member 905 in the storage portion 906 and the inner bottom portion 906N of the storage portion 906, so that the inside of the storage portion 906 is splash-proofed. .

FIG. 7 shows an example of a cross-sectional structure taken along line AA of the chemical liquid flow rate setting unit 900 shown in FIG.
As shown in FIG. 7, the setting dial 901 is housed and fixed in the housing portion 906, but the distal end portion of the setting dial 901 projects from the distal end portion of the housing portion 906 by a projection amount 608. As described above, since the distal end portion of the setting dial 901 protrudes, a medical worker can easily rotate the touching dial 901 by touching the setting dial 901 compared to the case where the setting dial 901 is entirely contained in the housing portion 906. .
As shown in FIG. 7, the shaft portion 907 is fitted in the cylindrical portion 901T of the setting dial 901, and the setting dial 901 can be rotated around the center CL. The permanent magnet 902 is fixed in the internal space 901S of the setting dial 901. Between the setting dial 901 and the inner bottom portion 906N of the accommodating portion 906, seal materials 903 and 904 for splash-proofing are disposed.

As shown in FIGS. 6 and 7, the Hall IC unit 610 is disposed on the inner bottom portion 906 </ b> N of the housing portion 906. As shown in FIG. 6, the Hall IC unit 610 has two Hall ICs (Hall elements) 611 and 612 and is disposed at a position corresponding to the gap between the magnetic members 905.
The two Hall ICs 611 and 612 of the permanent magnet 902 and the Hall IC unit 610 shown in FIG. 6 constitute a detection unit 995 that detects the rotation speed and rotation direction of the setting dial. When a medical worker rotates the setting dial 901, the Hall ICs 611 and 612, which are a pair of magnetic detection sensors of the detection unit 995, detect changes in the magnetic force of the permanent magnet 902, and will be described later with reference to FIG. Two different sensor output waveforms H1, H2 shown in A) are generated. These sensor output waveforms H1 and H2 are counted by the counter circuit of the control unit 100 shown in FIG. 4, so that the rotation speed and rotation direction of the setting dial 901 can be detected with a simple structure.

As shown in FIG. 7, a setting dial rotating operation feeling adjustment unit 920 is disposed in the vicinity of the setting dial 901. The setting dial rotation operation feeling adjustment unit 920 includes an electric motor 921, a dog 922 as a metal cylindrical engagement member, and a torque adjustment member 923. The output shaft 924 of the electric motor 921 is rotated forward or backward in response to a command from the control unit 100. For example, a male screw portion 925 is formed on the output shaft 924 of the electric motor 921, and a female screw portion 926 that meshes with the male screw portion 925 is formed on the dog 922.
As shown in FIG. 7, the distal end portion 927 of the dog 922 is in contact with the first surface 931 of the torque adjustment member 923. The torque adjusting member 923 is made of a thin elastically deformable member such as synthetic rubber or natural rubber. The torque adjustment member 923 is fixed to the inside of the side surface portion 899 of the upper portion 2A with an adhesive. The torque adjustment member 923 receives the force from the tip 927 of the dog 922 and transmits the force to the setting dial 901 side, thereby adjusting the amount of rotational torque applied to the setting dial 901 and the function of the splash-proofing member. Also plays.

As a result, when the output shaft 924 of the electric motor 921 rotates forward in response to a command from the control unit 100, the male screw portion 925 is screwed in a direction to fit into the female screw portion 926, whereby the dog 922 is linearly moved in the X2 direction. 922 can reduce the amount of torque applied to the setting dial 901 via the torque adjustment member 923. As a result, when a medical worker operates the setting dial 901 to set the flow rate value of the chemical solution, if necessary, the area where the chemical solution is set to a high flow rate or the flow rate range where the flow rate value is not normally set In, the rotational operation feeling of the setting dial 901 can be lightened.

In FIG. 7, when the output shaft 924 of the electric motor 921 is reversely rotated in response to a command from the control unit 100, the male screw portion 925 is screwed in a direction away from the female screw portion 926, so that the dog 922 is linearly moved in the X1 direction. The dog 922 can increase the amount of torque applied to the setting dial 901 via the torque adjustment member 923. As a result, when a medical worker operates the setting dial 901 to set the flow rate value of the chemical solution, if necessary, the area where the chemical solution is set to a high flow rate or the flow rate range where the flow rate value is not normally set In this case, it is possible to increase the feeling of rotating operation of the setting dial 901.

As described above, the output shaft 924 and the dog 922 of the electric motor 921 can rotate the output shaft 924 in a straight line of the dog 922 in order to increase or decrease the rotational operation feeling of the setting dial 901 as necessary. A rotation operation / linear operation conversion unit 990 for converting to a movement operation is configured.
If the electric motor 921 that is the drive unit shown in FIG. 7 rotates the output shaft 924, the dog 922 that is the meshing member can move linearly along the X2 and X1 directions, so that the dog 922 is pressed against the setting dial 901. And the torque required for the rotation operation of the setting dial 901 can be adjusted. For this reason, when the medical worker rotates the setting dial 901, the operation feeling of the setting dial 901 that can be felt by the medical worker can be freely changed.

Since a torque adjusting member 923 that can be elastically deformed is preferably disposed between the dog 922 and the setting dial 901 shown in FIG. 7, the dog 922 that is an engagement member is directly pressed against the setting dial 901. However, since the torque adjustment member 923 is provided, the torque required for the rotation operation of the setting dial 901 can be finely adjusted.
In the example shown in FIG. 7, the torque adjustment member 923 and the splash- proof seal materials 903 and 904 can be formed as one member, thereby reducing the number of parts. In addition, the male screw portion 925 is directly formed on the output shaft 924 of the electric motor 921. On the other hand, another shaft member having the male screw portion is directly connected to the output shaft 924, and the male screw portion of this shaft member is connected. The portion may engage with the female screw portion 926 of the dog 922.

Next, the permanent magnet 902, the magnetic member 905, and the Hall IC unit 610 shown in FIG. 6 will be described with reference to FIG.
FIG. 8A shows examples of shapes of the permanent magnet 902 and the magnetic member 905. 8B shows an example of the shape of each Hall IC 611, 612 of the Hall IC unit 610, and FIG. 8C shows the magnetic member 905 and the Hall IC unit 610 arranged on the inner bottom 906N of the housing portion 906. Show.
As shown in FIG. 8A, the disc-shaped permanent magnet 902 has, for example, 16 divided S poles and N poles alternately magnetized at an angle of 22.5 degrees. On the other hand, the magnetic member 905 has a plurality of radially formed convex portions 905A, the angle formed by each convex portion 905A and the concave portion 905B is 22.5 degrees, and the angle of the convex portion 905A is 13 degrees. Degree.

A magnetic member 905 shown in FIG. 8A has the same number of convex portions 905A as the number of S poles and N poles of the permanent magnet 902, or a smaller number. As shown in FIG. 6, such a magnetic member 905 is disposed on the inner bottom portion 906 </ b> N of the accommodating portion 906, so that the permanent magnet 902 of the setting dial 901 is magnetically attracted, and the setting dial 901 is accommodated in the accommodating portion. 906 is held so as not to fall out of the inside. In addition, as shown in FIG. 6, the magnetic member 905 is disposed on the inner bottom portion 906 </ b> N of the accommodating portion 906, so that when the setting dial 901 is rotated about the shaft portion 907, the medical engagement to be operated is performed. A person can obtain an appropriate feeling of click resistance when the setting dial 901 is rotated.
Hall ICs 611 and 612 shown in FIG. 8B have three terminal portions TR1, TR2, and TR3 and a sensor portion TS, and the length from the terminal portion TR1 to the terminal portion TR2 is, for example, 2.8 mm.
In FIG. 8C, the magnetic member 905 is fixed to the inner bottom portion 906N of the housing portion 906 with the shaft portion 907 as the center. The Hall IC unit 610 is fixed to a vacant part of the magnetic member 905 and is disposed at the same distance from each Hall IC 611 and 612 and the center CL of the shaft portion 907.

9A shows sensor output waveforms H1 and H2 output from the Hall IC 611 (sensor A) and the Hall IC 612 (sensor B), and FIG. 9B shows an angle display in the permanent magnet 902. . As described above, when a medical worker rotates the setting dial 901 in FIG. 6, the Hall ICs 611 and 612 that are a pair of magnetic detection sensors of the detection unit 995 detect a change in magnetic force of the permanent magnet 902. , Two different sensor output waveforms H1 and H2 shown in FIG. 9A are generated. These sensor output waveforms H1 and H2 are counted by the counter circuit 109 of the control unit 100 shown in FIG. 4 so that the rotation speed and rotation direction of the setting dial 901 can be detected.
As shown in FIGS. 9B and 8A, the permanent magnet 902 is divided into 16 parts, but the sensor output waveforms H1 and H2 shown in FIG. 9A have one pole N pole or one pole. The S pole is further shifted by 2 (11.25 degrees).

As shown in FIG. 9B, the candidates for the positional relationship (θ) of the Hall ICs 611 and 612 are 45n + 11.25 degrees = 11.25 degrees, 56.25 degrees, 101.25 degrees, 146.25 degrees ( 0 degrees ≦ θ ≦ 180 degrees).
In this case, in the case of 11.25 degrees, in order to prevent the Hall ICs 611 and 612 from colliding with each other, an interval SX = 15 * sin (5.625 °) = 1 as shown in FIG. 9B. .47 mm. As shown in FIG. 8B, since there is only a margin of 0.7 mm with respect to the outer dimension of 1.4 mm of the Hall ICs 611 and 612, 11.25 degrees cannot be used. Accordingly, as shown in FIG. 8C, the positional relationship (θ) = 56.25 degrees, 101.25 degrees, and 146.25 degrees can be selected. As shown in FIG. 8C, the Hall ICs 611 and 612 are selected. The positional relationship (θ) = 56.25 degrees is adopted as the optimum.

FIG. 10 shows an example of the relationship between the setting flow torque (rotation torque) applied to the setting dial 901 by the rotation operation feeling adjusting unit 920 of the setting dial shown in FIG. 7 and the rotation speed (setting flow) of the setting dial 901. FIG. The setting dial 901 is also called a dial jog.
In the example of the relationship in FIG. 10A, when the medical staff rotates the setting dial 901 and sets the flow rate of the drug solution above a predetermined standard, the rotational torque of the setting dial 901 is, for example, 170 mL / h. The set flow rate is set so as to increase rapidly. Thereby, it plays a role of calling attention to the medical staff by increasing the rotational operation feeling of the setting dial 901 as to whether the flow rate of the chemical solution to be set by the setting dial 901 is appropriate.
In this case, in the example of the relationship shown in FIG. 10A, for example, the rotational torque is suddenly increased from 0.6 cN · m to 1.2 cN · m, which is twice that value, and the rotational feeling of the setting dial 901 is suddenly increased. It is set to be heavy. However, this is only an example, and for example, it can be increased from 0.6 cN · m to 0.7 cN · m, and the rotational torque shown in FIG. It is not something. However, the role of calling attention to the medical staff cannot be fulfilled only by gradually increasing the rotational torque over time.

Further, in the relationship example of FIG. 10 (B), in the range of the flow rate desired to be set in advance, for example, a flow rate range GF1 of 150 mL / h to 200 mL / h, a flow rate range GF2 of 500 mL / h to 550 mL / h, and In the flow rate range GF1 of 900 mL / h to 950 mL / h, when the medical staff rotates the setting dial 901 to set the flow rate of the drug solution above a predetermined standard, the rotational torque of the setting dial 901 increases rapidly. Is set to be higher. As a result, in the predetermined flow rate ranges GF1, GF2, and GF3 of the chemical solution, it is possible to determine whether the flow rate of the chemical solution to be set by the setting dial 901 is appropriate by increasing the rotational operation feeling of the setting dial 901. It plays a role in alerting workers. In addition, in the range GF1, GF2, GF3 of the flow rate desired to be set in advance for the chemical solution, fine adjustment can be performed when the flow rate of the chemical solution is set using the setting dial 901.

The predetermined flow rate ranges GF1, GF2, and GF3 of the chemical solution vary depending on the type of the chemical solution, which patient it is, or the prescription of the chemical solution. The flow rate range of the chemical solution that is often used or the flow rate range that is scheduled to be set in advance with a barcode or the like attached to the syringe containing the chemical solution can be stored in the control unit 100 of the syringe pump 1 shown in FIG. .
In order to improve the rotational operability of the setting dial 901, the setting dial 901 is rotated, and the rotational torque of the setting dial 901 is not gradually increased. , Rotation torque is increased rapidly only in GF3. However, in other flow ranges, the rotational torque can be reduced so that only the minimum required flow ranges GF1, GF2, and GF3 can be finely adjusted when setting the chemical flow rate using the setting dial 901. To do. That is, when the rotational torque of the setting dial 901 is large, the medical staff can finely adjust the flow rate setting by rotating the setting dial 901.

Next, the usage example of the syringe pump 1 mentioned above is demonstrated.
Referring to FIG. 2, when a medical worker places, for example, the syringe 200 in close contact with the syringe main body holding portion 8D of the housing portion 8, a part of the main body flange 209 is positioned on the right side surface of the syringe main body holding portion 8D shown in FIG. It is inserted between the part 8V and the main body flange gripping part 500. Thereafter, the medical staff operates the clamp 5 shown in FIG. 2 to fix the syringe main body 201 in close contact with the syringe main body holding portion 8 </ b> D of the housing portion 8 with the clamp 5. Thereby, the syringe 200 does not move.
On the other hand, the medical staff pushes down the operation lever 83 of the slider 10 shown in FIG. 5 so that a pair of gripping members (not shown) grips the pusher flange 205.

The potentiometer 122 as a sensor for the amount of movement of the clamp 5 shown in FIG. 4 detects the amount of movement of the clamp 5 in a state in which the syringe body 201 is clamped by the clamp 5, thereby determining which capacity of the syringe body 201 is clamped. The control unit 100 is notified of whether or not it is securely clamped by 5.

The flow rate when the medical solution in the syringe main body 201 of the syringe 200 shown in FIG. 2 is sent is that the medical staff rotates the setting dial 901 of the chemical solution flow rate setting unit 900 shown in FIGS. 5 and 6 with a finger. You can set it.
In FIG. 7, when the output shaft 924 of the electric motor 921 is reversely rotated in response to a command from the control unit 100, the male screw portion 925 is screwed in a direction away from the female screw portion 926, whereby the dog 922 is linearly moved in the X1 direction. 922 can increase the amount of torque applied to the setting dial 901 via the torque adjustment member 923.
In this manner, the medical staff sets the flow rate for feeding the chemical solution by rotating the setting dial 901 of the chemical solution flow rate setting unit 900 shown in FIGS. 5 and 6 with a finger. In the example of (), when the medical staff rotates the setting dial 901 and sets the flow rate of the drug solution above a predetermined standard, the rotational torque of the setting dial 901 is set so as to increase rapidly. Therefore, it is possible to alert the medical staff by increasing the feeling of rotation operation of the setting dial 901 as to whether the flow rate of the chemical solution to be set by the setting dial 901 is appropriate.

In the example of the relationship in FIG. 10B, the medical staff rotates the setting dial 901 in the flow rate range desired to be set in advance, for example, in a plurality of flow rate ranges GF1, GF2, and GF1. When the flow rate of the chemical solution is set to a predetermined level or more by operating, the rotational torque of the setting dial 901 is set so as to increase rapidly, and the flow rate of the chemical solution to be set by the setting dial 901 matches. Whether the setting dial 901 is rotated or not can be urged to alert the medical staff.
The range of the flow rate that is desired to be set in advance depends on the type of the chemical solution, which patient it is, or the prescription of the chemical solution.

In order to improve the rotating operability of the setting dial 901, the setting dial 901 is rotated, and the rotational torque of the setting dial 901 is not gradually increased. , GF2 and GF3 alone, the rotational torque increases rapidly, and the rotational torque is reduced in other flow ranges. For this reason, the medical staff can finely adjust the flow rate of the chemical solution using the setting dial 901 only for the necessary minimum flow ranges GF1, GF2, GF3, and when the rotational torque of the setting dial 901 is large, Fine adjustment of the flow rate setting by rotating the setting dial 901 becomes possible.
In the relationship example of FIG. 10B, the rising state of the rotational torque in the flow ranges GF1, GF2, and GF3 in the range where the chemical flow rate is desired to be set is rapidly increased, but is simply shown in an enlarged view. In addition, the rising state of the rotational torque may be slightly trapezoidal.
Thereafter, when the control unit 100 in FIG. 4 determines that the syringe 200 has been securely clamped, the motor 133 of the syringe pusher driving unit 7 is driven by the command of the control unit 100 to rotate the feed screw 135 to slide the slider 10. Is moved in the T direction. The slider 10 presses the syringe pusher 202 in the X2 direction (T direction), and accurately sends the drug solution in the syringe main body 201 shown in FIG. 2 to the patient P through the tube 203 via the indwelling needle 204. To do.

FIG. 11 is a cross-sectional view showing another embodiment of the present invention.
A setting dial rotation operation feeling adjustment unit 950 in another embodiment of the present invention shown in FIG. 11 is provided in place of the setting dial rotation operation feeling adjustment unit 920 in the embodiment of the present invention shown in FIG.
The structure of another embodiment of the present invention shown in FIG. 11 is substantially the same as the structure of the embodiment of the present invention shown in FIG. 7 except for the rotational operation feeling adjusting section 950 of the setting dial of the chemical flow rate setting section 900A. Therefore, the same reference numerals are used for the description.

A setting dial rotating operation feeling adjustment unit 950 of the chemical liquid flow rate setting unit 900A shown in FIG. 11 includes an electromagnet 951 and a permanent magnet 902 on the setting dial 901 side. By energizing the coil 952 of the electromagnet 951 from the control unit 100, the electromagnet 951 can adjust the force for magnetically attracting the permanent magnet 902 on the setting dial 901 side. That is, if the amount of current to the coil 952 of the electromagnet 951 is large, the electromagnetic force of the electromagnet 951 increases, and the setting dial 901 is strongly attracted in the X2 direction, so that the feeling of rotation operation of the setting dial 901 becomes heavy. Further, when the amount of current to the coil 952 of the electromagnet 951 is small, the electromagnetic force of the electromagnet 951 is reduced, and the setting dial 901 is attracted relatively weakly in the X2 direction, so that the feeling of rotational operation of the setting dial 901 becomes light.
As described above, the control unit 100 controls the amount of current that flows through the coil 952, thereby adjusting the rotational operation feeling of the setting dial 901.

Even when the setting dial rotation operation feeling adjustment unit 950 shown in FIG. 11 is used, the setting dial rotation operation feeling adjustment unit 920 applies the setting dial 901 to the setting dial 901 in the same manner as the setting dial rotation operation feeling adjustment unit 920 shown in FIG. Example of relationship between set flow torque (rotation torque) to be applied and number of rotations (set flow rate) of setting dial 901, that is, relationship setting example in FIG. 10A and setting dial rotation operation in the relationship example in FIG. The feeling can be adjusted.
The setting dial rotation operation feeling adjustment unit 950 adjusts the amount of current supplied to the electromagnet 951 disposed on the main body cover 2 side and the coil 952 of the electromagnet 951 so that the electromagnet 951 moves the permanent magnet 902 of the setting dial to the main body side. The control unit 100 adjusts the magnetic attraction force to be attracted to adjust the torque required for the rotating operation of the setting dial 901. Therefore, the control unit 100 adjusts the amount of current supplied to the coil 952 of the electromagnet 951 and adjusts the magnetic attraction force that the electromagnet 951 attracts the permanent magnet 902 of the setting dial 901 in the X2 direction toward the main body cover 2. Thus, the torque required for rotating the setting dial 901 can be adjusted. Therefore, when the medical staff rotates the setting dial 901, the operational feeling of the setting dial 901 can be changed.

Next, FIGS. 12 and 13 show an infusion pump 1001 which is another example of the medical pump of the present invention.
The infusion pump 1001 is provided with a chemical flow rate setting unit 1900 having the same structure as the chemical flow rate setting unit 900 shown in FIG. This chemical flow rate setting unit 1900 has the same structure as the chemical flow rate setting unit 900 shown in FIGS. 6 and 7, or the same structure as the chemical flow rate setting unit 900A shown in FIG. The same function can be demonstrated according to. The syringe pump 1 and the infusion pump 1001 have a common appearance design, and in particular, the outer shape and size of the main body cover 2 and the arrangement and shape of the display unit 3 and the feeding panel unit 4 of the main body cover 2 are common. It has become.
The main body cover 1002 of the infusion pump 1001 shown in FIG. 12 and the main body cover 2 of the syringe pump 1 shown in FIG. 1 have substantially the same shape in order to share the shape. For this reason, when the part in the infusion pump 1001 shown in FIG. 12 and FIG. 13 is substantially the same as the part in the syringe pump 1 shown in FIG. 1 and FIG. Let's write the code of the stand.
FIG. 1 is a perspective view showing a preferred embodiment of the infusion pump of the present invention. FIG. 2 is a perspective view of the infusion pump shown in FIG. 1 as viewed from the W direction.

As shown in FIG. 12 (B), the infusion pump 1001 accurately detects the patient P from the drug bag 1170 filled with the drug solution 1171 via the clamp 1179, the infusion tube 1200 as the drug solution pipe, and the indwelling needle 1172. Can be fed to
The infusion pump 1001 includes a main body cover 1002, a handle 2T, and a chemical flow rate setting unit 1900. The reason why the main body cover 1002 has the splash-proof treatment structure is that the medicine 1171 in the medicine bag 1170 disposed above may spill out or the disinfecting liquid used in the vicinity may scatter and adhere. is there.

As shown in FIG. 12, the display unit 3 and the operation panel unit 4 are arranged on the upper portion 1002 </ b> A of the main body cover 1002. The display unit 3 is disposed at the upper left position of the upper portion 1002A of the main body cover 1002 and above the opening / closing cover 1005. The upper portion 1002A of the main body cover 2 is the upper half portion of the main body cover 1002. A lower portion 1002B of the main body cover 1002 is a lower half portion of the main body cover 1002.
The operation panel unit 4 is arranged on the right side of the display unit 3 in the upper portion 1002A of the main body cover 1002. The operation panel unit 4 includes, for example, a pilot lamp 4A, a fast-forward switch button 4B, and a start button in the illustrated example. A switch button 4C, a stop switch button 4D, a menu selection button 4E, and the like are arranged.

As shown in FIGS. 12B and 13, an opening / closing cover 1005 as a lid member is provided on the lower portion 1002B of the main body cover 1002 so as to be openable / closable in the R direction around the rotation shaft 1005A. The opening / closing cover 1005 is a lid formed long along the X direction. An infusion tube 1200 made of a flexible thermoplastic resin such as soft vinyl chloride is set in the tube mounting portion 1050 of the lower portion 1002B on the inner surface side of the opening / closing cover 1005, and the opening / closing cover 1005 is closed. Thus, the infusion tube 1200 can be mounted horizontally along the X direction.
As shown in FIG. 12, an infusion tube setting direction for clearly displaying the T direction, which is the correct liquid feeding direction, when the infusion tube 1200 is set on the surface of the opening / closing cover 1005, if necessary. A display unit 1150 is provided. The infusion tube setting direction display unit 1150 includes a drug bag display unit 1151 that displays the drug bag side, a patient side display unit 1152 that displays the patient side, and a liquid supply direction display unit 1153 that clearly indicates the liquid supply direction of the drug. .

As shown in FIG. 13, the tube mounting portion 1050 is provided along the X direction at the lower portion of the display portion 3 and the operation panel portion 4. The tube mounting portion 1050 can be covered with the opening / closing cover 1005 when the opening / closing cover 1005 is closed in the CR direction around the rotation shaft 1005A as shown in FIG.
As shown in FIG. 13, the tube mounting portion 1050 includes a bubble sensor 1051, an upstream blockage sensor 1052, a downstream blockage sensor 1053, a first infusion tube guide portion 1054 at the right side position, and a second infusion tube guide portion at the left side position. 1055 and an opening / closing cover 1005. A tube clamp portion 1270 is disposed on the tube mounting portion 1050.
The opening / closing cover 1005 is provided at the lower part of the main body cover 1002 by two hinge portions 1002H so that the tube mounting portion 1050 can be opened and closed along the CS direction and the CR direction about the rotation shaft 1005A. It is supported. The two hinge portions 1002H are disposed corresponding to the first hook member 1005D and the second hook member 1005E, respectively.

As shown in FIG. 13, an opening / closing operation lever 1260 is provided at the upper right portion on the surface side of the opening / closing cover 1005. On the inner surface side of the opening / closing cover 1005, an infusion tube pressing member 1005C and engagement members 1005D and 1005E are provided. The infusion tube pressing member 1005C is disposed as a long rectangular and planar protrusion along the X direction and is in a position facing the liquid feeding drive unit 1060. The infusion tube pressing member 1005C is a flat surface in the X direction along the liquid feeding drive unit 1060, and presses a part of the infusion tube 1200 with the liquid feeding drive unit 1060 by closing the opening / closing cover 1005 in the CR direction. Pinch.

A medical worker can set the infusion tube 1200 along the horizontal direction of the lower half of the main body of the infusion pump 1001 while confirming the display content displayed on the display unit 3, and the infusion tube 1200 is a tube mounting portion. After being set at 1050, the opening / closing cover 1005 can cover the infusion tube 1200.
The two hook members 1005D and 1005E are mechanically simultaneously engaged with the fixing portions 1001D and 1001E on the main body 1B side, so that the opening / closing cover 1005 can hold the tube mounting portion 1050 in a closed state.

The first infusion tube guide portion 1054 shown in FIG. 13 can be held by fitting the upstream side 1200A of the infusion tube 1200. The second infusion tube guide portion 1055 can be held by fitting the downstream side 1200B of the infusion tube 200, and holds the infusion tube 1200 in the horizontal direction along the X direction. In this way, the infusion tube 1200 held in the horizontal direction is disposed along the bubble sensor 1051, the upstream blockage sensor 1052, the liquid feeding drive unit 1060, the downstream blockage sensor 1053, and the tube clamp unit 1270. It is like that. As shown in FIG. 13, when the infusion tube 1200 is set horizontally in the X direction, the medical worker closes the opening / closing cover 1005 in the CR direction. Then, when the control unit drives the liquid feeding drive unit 1060, the liquid medicine in the infusion tube 1200 is fed at a set flow rate, and is accurately fed to the patient P via the indwelling needle 1172. be able to.

In the embodiment of the present invention, when the medical worker sets the flow rate of the chemical solution by rotating the setting dial, it can be intuitively operated by increasing the flow rate value of the chemical solution little by little. Useful from the point of view. In addition, when the medical staff sets the flow rate of the chemical solution by rotating the setting dial, the rotation operation feeling adjustment unit of the setting dial makes the rotation feeling of the setting dial heavier (or lightens as necessary). Therefore, the medical staff can know that the feeling of rotation operation of the setting dial has changed, and there is no possibility that an incorrect setting of the flow rate value will occur. In other words, when the medical staff uses the setting dial, the setting dial can rotate endlessly, and the medical staff can change the operational feeling of the rotation, so unexpectedly setting a high flow rate chemical or mistake It is possible to prevent the unintended flow rate from being set.
When a health care worker rotates the setting dial, it is possible to change the feeling of operation of the setting dial, so that a high flow rate chemical solution may be accidentally set or an unintended flow rate may be set. This eliminates the need for fine adjustment of the chemical flow rate. In other words, when the medical staff rotates the setting dial, it is possible to set the drug solution to a high flow rate or to change the operation feeling of the setting dial around the flow rate range of the drug solution that is not normally set. It is possible to prevent a high flow rate chemical solution from being set unexpectedly or a flow rate that is not mistakenly set.

FIG. 14 shows an example in which a plurality of syringe pumps 1 shown in FIGS. 1 and 2 are mounted on a setting stand 70, and a plurality of syringe pumps 1 can be used simultaneously as necessary. A plurality of syringe pumps 1 of the same type are arranged so as to be stacked, or a syringe pump 1 and an infusion pump 1001 which is another example of a pump different from the syringe pump 1, for example, a medical pump, are stacked. At the time of placement, the peripheral part or part of the main body cover of the syringe pump 1 and the peripheral part or part of the main body cover of the infusion pump 1001 are preferably sealed in a color different from the color of the main body cover, for example, yellow or red. By attaching or painting a material, the pump mark 770 can be displayed.
By providing the pump marks 770 as described above, when a plurality of syringe pumps 1 are used in a stacked manner, or when the syringe pump 1 and the infusion pump 1001 are used in a stacked manner, a medical worker can use each pump. There is an advantage that the boundary of

By the way, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made to the present invention, and various modifications can be made within the scope described in the claims.
In the syringe pump 1 as a medical pump according to the embodiment of the present invention, for example, the syringes 200, 300, and 400 that store three kinds of sizes of the liquid medicine shown in FIG. Not limited to this, two types or four or more types of syringes can be set.
By setting the color of the setting dial 901 in each embodiment of the present invention to be different from the color of the main body cover 2, the position of the setting dial 901 can be clearly and visually recognized. As an example, the color of the setting dial 901 is, for example, green, and the main body cover 2 is, for example, cream.

DESCRIPTION OF SYMBOLS 1 ... Syringe pump (an example of a medical pump), 2 ... Main body cover (main body), 3 ... Display part, 4 ... Operation panel part, 5 ... Clamp, 6 ... Syringe Setting unit, 7 ... Syringe pusher drive unit, 100 ... Control unit, 200, 300, 400 ... Syringe, 610 ... Hall IC unit, 611, 612 ... Hall IC (magnetic detection sensor) ,... 900, 900A ... chemical flow rate setting unit, 907 ... shaft, 921 ... motor (example of drive unit), 924 ... motor output shaft, 922 ... dog (meshing member) ), 990... Rotational operation-linear motion conversion unit, 1001... Infusion pump (an example of a medical pump), 1900... Liquid flow rate setting unit, 1200.

Claims (7)

1. A medical pump for delivering a liquid medicine to a patient,
   A chemical flow rate setting unit for setting a flow rate for sending the chemical solution to the patient;
   The flow rate setting unit of the chemical liquid is
   A setting dial that is rotatably attached to a shaft portion provided in the main body of the medical pump, and that can set the flow rate of the drug solution by rotating operation,
   A medical pump, comprising: a setting dial rotating operation feeling adjusting unit arranged on the main body for adjusting a torque required for the setting dial rotating operation.
2. Between the setting dial and the main body, there is a detection unit that detects the number of rotations and the rotation direction of the setting dial, and the detection unit alternately has an S pole and an N pole arranged in the setting dial. 2. A permanent magnet disposed on the main body side and a pair of magnetic detection sensors disposed on the main body side and detecting a magnetic force from the permanent magnet to generate two different output waveforms. Medical pumps.
3. The rotational adjustment feeling adjustment portion of the setting dial has a driving portion disposed on the main body side, and an engagement member that is engaged with the output shaft of the driving portion and pressed against the setting dial side, The output shaft and the engagement member convert the rotation operation of the output shaft into a linear movement operation in a direction parallel to the direction of the shaft portion, and press the engagement member against the setting dial side to thereby change the setting dial. The medical pump according to claim 1 or 2, wherein a rotational motion-linear motion conversion unit that adjusts a torque required for the rotational operation is configured.
4. The medical pump according to claim 3, wherein a torque adjusting member capable of elastic deformation is disposed between the engaging member and the setting dial.
5. The rotational adjustment feeling adjusting unit of the setting dial adjusts the amount of current supplied to the electromagnet arranged on the main body side and the coil of the electromagnet, and the electromagnet moves the permanent magnet of the setting dial to the main body side. The medical pump according to claim 1, further comprising: a control unit that adjusts a magnetic attraction force to be attracted to adjust a torque required for the rotation operation of the setting dial.
6. The said medical pump is a syringe pump which mounts | wears with the syringe with which the said chemical | medical solution is filled, and sends the said chemical | medical solution in the said syringe to a patient. A medical pump according to 1.
7. 6. The infusion pump according to claim 1, wherein the medical pump is an infusion pump that holds and holds an infusion pipe through which the medicinal solution passes, and sends the medicinal solution to the patient through the infusion pipe. The medical pump described.

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