JP2015157050A - rapid infusion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rapid infusion device capable of preventing a nurse or the like from forgetting to release the rapid infusion.SOLUTION: A rapid infusion device includes: a warming part 80 for warming a liquid L; a liquid feed pump P1 for feeding the liquid L; a small flow rate area adjusting operation part 90 for adjusting a flow rate of the liquid L; a large flow rate area adjusting operation part 100 that adjusts a flow rate of the liquid L on the basis of a displacement amount with respect to a reference position in a flow rate area larger than the flow rate area of the liquid L adjusted by the small flow rate area adjusting operation part 90; an energization part 130 that energizes the large flow rate area adjusting operation part 100 in a direction of decreasing the displacement amount with respect to the reference position of the large flow rate area adjusting operation part 100; and a control part 50 that controls the drive of the liquid feed pump P1 on the basis of any one operation of the large flow rate area adjusting operation part 100 and the small flow rate area adjusting operation part 90.

Description

  The present invention relates to a rapid infusion device that rapidly infuses a liquid containing a blood component.

  Conventionally, an infusion device that infuses a liquid containing a blood component to a patient is known (for example, see Patent Document 1). In this infusion device, when a bag storing a liquid containing blood components necessary for treatment of a patient is connected, the liquid is heated by a heating unit and the liquid heated by a pump is sent to the patient side. The infusion device includes an operation panel for adjusting the flow rate of the liquid, and an operator such as a doctor or a nurse who operates the infusion device operates the operation panel to set the flow rate of the infusion solution. It is possible.

Japanese National Patent Publication No. 9-500481

  By the way, when infusion is performed using an infusion device, the liquid is usually infused at a small flow rate range of about 0.2 ml / min to 150 ml / min, but in an emergency such as sudden bleeding of a patient, 150 ml It is necessary to rapidly infuse the liquid at a large flow rate range of about 1 / min to 750 ml / min. Such a flow rate adjustment of the infusion is performed by setting the flow rate on the operation panel in both normal and emergency situations.

  For this reason, after setting a large flow rate for urgent rapid infusion, if the patient's condition stabilizes and urgent rapid infusion is no longer necessary, reset the flow to a small flow range on the operation panel. There is a need. However, if the operator forgets to reset the flow rate to a small flow rate range, the infusion continues at a flow rate in the large flow rate range without releasing the rapid infusion, so that all of the liquid stored in the storage bag is infused in a short time. There is a problem that.

  Then, an object of this invention is to provide the rapid infusion apparatus which can prevent the cancellation | release forgetting release of rapid infusion.

  A rapid infusion device according to the present invention is a rapid infusion device that rapidly infuses a liquid containing a blood component, and includes a pump that delivers the liquid, a first operation unit that adjusts the flow rate of the liquid, and a first operation unit. In a flow rate range larger than the liquid flow rate range to be adjusted, a second operation unit that adjusts the liquid flow rate based on the displacement amount with respect to the reference position, and a second operation unit in a direction in which the displacement amount with respect to the reference position of the second operation unit decreases. An urging unit that urges the operation unit, and a control unit that drives and controls the pump based on either one of the first operation unit and the second operation unit are provided.

  According to the rapid infusion apparatus according to the present invention, when the operator of the rapid infusion apparatus operates the first operation unit to adjust the flow rate, the liquid is pumped out, so that the liquid can be infused into the patient. On the other hand, when the operator of the rapid infusion device operates the second operation part to adjust the flow rate, the liquid is pumped out at a flow rate range larger than the liquid flow rate range adjusted by the first operation unit. Can be rapidly infused into the patient. Then, when the operator of the rapid infusion device releases the hand from the second operation unit, the external force applied to the second operation unit is released. Therefore, the second operation unit has a small displacement amount due to the urging force of the urging unit. And move back to the reference position. Thereby, it is possible to prevent forgetting to cancel the rapid infusion.

  In this case, the control unit drives and controls the pump based on the operation of the second operation unit when the second operation unit is operated, and the operation of the first operation unit is performed when the second operation unit returns to the reference position. It is preferable to control the drive of the pump based on this. As described above, when the second operation unit is operated, rapid infusion in an emergency can be reliably performed by driving and controlling the pump based on the operation of the second operation unit. On the other hand, when the second operation unit returns to the reference position, the pump is controlled based on the operation of the first operation unit, so that the operator only releases the second operation unit to release the rapid infusion. It can be returned to normal infusion.

  Moreover, it is preferable that the second operation unit is rotatably provided and adjusts the liquid flow rate based on the rotation angle with respect to the reference position. In this way, by configuring the second operation unit, the second operation unit can be operated easily and sensibly.

  The second operation unit may include a rod-shaped member that can move linearly, and may be configured to adjust the flow rate of the liquid based on the amount of movement of the rod-shaped member with respect to the reference position. As described above, the second operation unit can be operated easily and intuitively by configuring the second operation unit.

  According to the present invention, forgetting to cancel rapid infusion can be prevented.

It is a perspective view which shows the rapid infusion apparatus which concerns on this embodiment. It is a rear view of the rapid infusion apparatus concerning this embodiment. It is a perspective view which expands and shows the liquid circuit with which the rapid infusion apparatus was mounted | worn. It is a figure which shows an example of a liquid circuit. It is a block diagram of the rapid infusion apparatus concerning this embodiment. It is a front view which shows a 2nd operation part. It is a schematic block diagram which shows the 2nd operation part periphery. It is a schematic sectional drawing which shows a rotation position control part. It is a schematic sectional drawing which shows an urging | biasing part. It is a flowchart which shows the processing operation of a control part. It is a figure which shows the modification of a 2nd operation part.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The “liquid” used in the present embodiment broadly intends a liquid containing blood components such as red blood cells, white blood cells, or platelets, such as whole blood preparations for blood transfusion, red blood cell preparations, platelet preparations, plasma preparations, etc. Contains blood products and saline.

  The rapid infusion device 1 according to the present embodiment is a device that introduces a liquid such as a blood product into a patient during treatment. In particular, when urgent is required, the refrigerated liquid is sent while being heated to an appropriate temperature. It is a device to liquefy. The rapid infusion device 1 is equipped with a liquid circuit 2 through which a liquid containing blood components passes. First, the liquid circuit 2 will be described, and then the rapid infusion device 1 will be described in detail.

(Liquid circuit)
As shown in FIGS. 3 and 4, the liquid circuit 2 includes, for example, a tube made of synthetic resin (vinyl chloride or the like) and forms a flow path through which the liquid L passes. The liquid circuit 2 is installed at a predetermined position of the rapid infusion device 1, and the liquid L in the liquid circuit 2 is transferred by driving the rapid infusion device 1, and the liquid L passing through the liquid circuit 2 is appropriately heated. Is done.

  The liquid circuit 2 is basically a closed-type liquid flow path that is blocked from the outside air, and stores a mixed liquid (hereinafter, “liquid”) L such as blood or anticoagulant that has been quality-controlled by low-temperature storage. The reservoir bag 4, a liquid supply line 10 for transferring the liquid L, a puncture needle connecting portion 5 provided at the end of the liquid supply line 10 for discharging the liquid L, and a drip chamber 7 provided on the liquid supply line 10. And.

  The liquid supply line 10 is a liquid flow path that connects the reservoir bag 4 and the puncture needle connecting portion 5, and a drip chamber 7 is attached to the liquid supply line 10 in the middle. In the liquid feeding line 10, the upstream side across the drip chamber 7 is an upstream line 11, and the downstream side is a downstream line 12.

  The drip chamber 7 is a cylindrical container having a width wider than the inner diameter of the tube forming the flow path, and bubbles are separated and captured from the liquid L flowing into the drip chamber 7. The drip chamber 7 is installed in the rapid infusion device 1 so that the longitudinal direction thereof is vertically oriented, the bubble discharge port 7a and the liquid receiving port 7c are provided in the upper part, and the liquid discharge port 7b is provided in the lower end part. Yes.

  In the middle of the upstream line 11, a plate-like heating bag 13 made of synthetic resin is provided. The warming bag 13 is inserted into the rapid infusion device 1 so as to come into contact with a warming unit 80 described later. The warming bag 13 is formed with a meandering channel 13a through which the liquid L passes, and tubes are connected to the inlet 13b and the outlet 13c of the meandering channel 13a, respectively. The tube on the inlet 13 b side is connected to the reservoir bag 4, and the tube on the outlet 13 c side is connected to the liquid inlet 7 c of the drip chamber 7.

  Further, a tube is connected to the liquid discharge port 7b of the drip chamber 7, and a puncture needle connecting portion 5 is provided at the downstream end of the tube. A tube is connected to the bubble outlet 7 a of the drip chamber 7, and the other end of the tube is connected to the reservoir bag 4. The tube connected to the liquid discharge port 7 b of the drip chamber 7 forms a downstream line 12, and the tube connected to the bubble discharge port 7 a forms a bubble return line 15. In addition, the tube forming the downstream line 12 branches at a midway branch portion 12 a and is connected to the reservoir bag 4. The tube branched from the branch part 12 a of the downstream line 12 forms an additional bubble return line 17.

  The main part of the liquid circuit 2 is assembled to the circuit panel 3 and integrated together. By mounting the circuit panel 3 at a predetermined position of the rapid infusion device 1, mounting of the main part of the liquid circuit 2 to the rapid infusion device 1 is completed indirectly and simply.

(Rapid infusion device)
As shown in FIGS. 1 to 5, the rapid infusion device 1 includes a liquid feeding pump P <b> 1 that feeds the liquid L that passes through the liquid circuit 2, a heating unit 80 that heats the liquid L, and bubbles in the liquid L. Each of the detectors 30a, 30b, and 30c, and the liquid circuit 2 are tightened to close the flow path, and the main clamp 31 and the sub clamp 32 that open the flow path by releasing the tightening are provided. , A bubble removal pump P2, and a control unit 50 for controlling the heating unit 80 and the like.

  The casing 40 of the rapid infusion device 1 is designed with a compact and slim body shape, and the width of the front and back is considerably narrower than the depth. The casing 40 is a vertically long, substantially rectangular shape in a side view, and further has a shape in which the upper part protrudes forward in a bowl shape. Due to this bowl-like shape, an inclined surface 40 a is formed on the front upper portion of the housing 40. Moreover, the substantially flat part which is the upper end of the housing | casing 40 forms the tray part 40b in which the inner side was slightly depressed rather than the periphery, and it can utilize it suitably as a storeroom at the time of work.

  An operation panel 60 is provided on the inclined surface 40 a provided in the upper front portion of the housing 40. On the operation panel 60, a display monitor 61, a stop switch 62, various setting buttons 63, a small flow rate region adjustment operation unit 90, and a large flow rate region adjustment operation unit 100 are arranged. The small flow rate region adjustment operation unit 90 is a second operation unit that is used during normal infusion, and the large flow rate region adjustment operation unit 100 is a first operation that is used during rapid infusion in an emergency. Part. The details of the small flow area adjustment operation unit 90 and the large flow area adjustment operation unit 100 will be described later. By arranging the operation panel 60 on the inclined surface 40a, convenience and workability for a medical worker who works at least in a standing state are improved.

  Below the operation panel 60, a liquid feed pump P1 is provided. The liquid feed pump P1 includes a rotor that rotates within a rectangular box, and the liquid L in the liquid circuit 2 is fed by rotating the rotor so as to handle the tube in a certain direction. The liquid feed pump P1 according to the present embodiment is disposed at a position hidden behind the operation panel 60, and is disposed not on the inclined surface 40a but on the vertical surface. However, the liquid feed pump P1 may also be provided on the inclined surface 40a in the same manner as the operation panel 60 in consideration of convenience when the tube of the liquid circuit 2 is wound around a predetermined position of the roller.

  A vertically long slot 41 into which the heating bag 13 of the liquid circuit 2 is inserted is provided below the liquid feed pump P1. The slot 41 is a portion serving as an insertion port for the heating unit 80, and the heating unit 80 is built in the slot 41. The slot 41 is inclined so that the lower end protrudes to the near side from the upper end, which is advantageous in terms of improving workability when the heating bag 13 is inserted.

  A receiving tray 42 that receives the leaked liquid L is provided below the slot 41. In the case of emergency blood transfusion, the internal pressure of the liquid circuit 2 becomes larger than that in the case of normal blood transfusion, and the flexible heating bag 13 made of synthetic resin or the like is overloaded accordingly. As a matter of course, the warming bag 13 has sufficient strength to withstand the overload. However, if the warming bag 13 is broken and the liquid L leaks, the rapid infusion device 1 If it leaks out from the whole, there is a risk of hindering later work. Therefore, in the present embodiment, a slope 43 connected to the tray 42 is provided below the heating bag held at a predetermined position in the housing 40. By receiving the leaked liquid L with the slope 43, the diffusion of the leaked liquid L can be minimized, and since it is concentrated on the receiving tray 42 by the inclined slope 43, a wide range around the rapid infusion device 1 can be obtained. It can be prevented from getting dirty.

  A plurality of hooks 44 for holding the circuit panel 3 of the liquid circuit 2 in a predetermined position are provided on the side surface of the housing 40. These hooks 44 are engaged with holes 3 a and notches 3 b formed in the circuit panel 3 to position the circuit panel 3 at a predetermined position.

  Further, on this side surface, in a state where the liquid circuit 2 is installed at a predetermined position, the detectors 30a arranged corresponding to the upstream line 11 and the branching portions 12a of the downstream line 12 are arranged on the upstream side. The first downstream detector 30b, the second downstream detector 30c arranged downstream, the main clamp 31 that opens and closes the flow path downstream of the branching portion 12a, and the sub that opens and closes the additional bubble return line 17 A clamp 32, a bubble removal pump P2 and the like disposed in the bubble return line 15 are provided.

  In order to make the rapid infusion device 1 movable at the bottom of the housing 40, four carts 45 provided with casters 45a are provided at four locations.

  On the back surface of the housing 40, a stand portion 47 is provided that suspends and supports various liquid storage bags. The storage bags for various liquids include the reservoir bag 4, a blood component storage bag 4A for storing a liquid L containing blood components, a priming liquid storage bag 4B for storing a priming liquid (such as physiological saline), and a blood component storage bag 4C. Etc. The blood component storage bags 4A and 4C are connected to the reservoir bag 4 through a tube and mixed by being held in the reservoir bag 4 by an operator's hand. The priming liquid storage bag 4 </ b> B is connected to the reservoir bag 4 when the priming process is performed on the liquid circuit 2, and supplies the priming liquid before introducing the liquid L and the anticoagulant into the reservoir bag 4.

  The rapid infusion device 1 controls the liquid feeding pump P1, the bubble removal pump P2, the main clamp 31, and the auxiliary clamp 32 based on the values detected by the detectors 30a, 30b, and 30c, and further, a heating unit The control part 50 which controls the electric power supply to 80 is provided. The control unit 50 includes a control board on which a CPU, a RAM, a ROM, and the like are mounted, a memory, a communication module that transmits and receives various control signals, and the control board performs operation processing according to a predetermined program. A function (for example, a flow rate adjusting function) may be realized.

  The control unit 50 is connected to the operation panel 60. When an operation by a medical worker or the like is received on the operation panel 60, the operation signal is input to the control unit 50, and control based on the operation signal is performed.

  For example, the control unit 50 is connected to the detectors 30a, 30b, and 30c by wire or wirelessly, and passes through the liquid feeding line 10 based on the values detected by the detectors 30a, 30b, and 30c. The presence or absence of bubbles in the liquid L is monitored.

  Further, the controller 50 is connected to the liquid feed pump P1 and the bubble removal pump P2 by wire or wirelessly, and controls the liquid feed pump P1 so that the liquid feed is the flow rate of the liquid L passing through the upstream line 11. Control the flow rate. Further, the control unit 50 controls the return flow rate, which is the flow rate of at least one of the liquid L passing through the bubble return line 15 and the bubbles, by controlling the bubble removal pump P2. That is, the control unit 50 controls the liquid flow rate and the return flow rate so that the liquid level in the drip chamber 7 does not fall below a predetermined height. The return flow rate is controlled to be smaller than that.

  In addition, the control unit 50 controls the main clamp 31 based on the detection values of the first downstream detector 30b and the second downstream detector 30c to open and close the downstream line 12, and also opens the sub clamp 32. The additional bubble return line 17 is controlled to open and close.

  The control unit 50 is connected to the power supply unit 70, and controls the supply of current to the heating unit 80 by controlling the power supply unit 70. The power supply unit 70 is basically connected to an external power supply, and receives and supplies current to the heating unit 80 in response to a control signal from the control unit 50. The power supply unit 70 corresponds to a current supply unit that supplies current to the heating unit 80.

(Small flow rate adjustment operation section)
The small flow rate region adjusting operation unit 90 is a rotary or dial type operation unit provided rotatably. The small flow rate region adjustment operation unit 90 can adjust the flow rate of the liquid L based on the rotation angle (displacement amount) with respect to the reference position. The flow rate range of the liquid L adjusted by the small flow rate range adjusting operation unit 90 is a small flow rate range that is a normal flow rate range for infusion. Note that the flow rate range means a flow rate range. For example, the small flow rate range may be 0.2 ml / min to 150 ml / min. The rotation angle of the small flow rate region adjustment operation unit 90 with respect to the reference position can be detected by, for example, a potentiometer (not shown). Note that the small flow rate region adjustment operation unit 90 may be any type of operation unit, and may be, for example, a button type, a touch panel type, or a lever type.

(Large flow area adjustment operation section)
As shown in FIGS. 6 and 7, the large flow rate region adjustment operation unit 100 is a rotary or dial type operation unit that is rotatably provided, similarly to the small flow rate region adjustment operation unit 90. The large flow rate region adjusting operation unit 100 includes a disc-shaped knob 101 that is touched by an operator, and a shaft that extends from the center of the knob 101 toward the inside of the rapid infusion device 1 and is rotatably supported. Part 102. For this reason, the large flow rate region adjusting operation unit 100 operates the knob unit 101 to rotate about the shaft unit 102 as a rotation axis. In addition, a recess 103 is formed on the surface of the knob 101 so that the finger is hooked to rotate the knob 101.

  The large flow rate region adjusting operation unit 100 is rotatably attached in a rotation angle range from a rotation position corresponding to the reference position to a rotation position corresponding to the maximum position in the rotation direction around the shaft portion 102. The large flow rate region adjustment operation unit 100 can adjust the flow rate of the liquid L based on the rotation angle θ with respect to the reference position of the large flow rate region adjustment operation unit 100. Note that the rotation angle θ with respect to the reference position of the large flow rate region adjustment operation unit 100 corresponds to a displacement amount with respect to the reference position in the rotation direction of the large flow rate region adjustment operation unit 100. Specifically, the flow rate of the liquid L increases as the rotation angle θ with respect to the reference position of the large flow region adjustment operation unit 100 increases, and the reference position of the large flow region adjustment operation unit 100 increases. The flow rate of the liquid L is adjusted so that the flow rate of the liquid L becomes smaller as the rotation angle θ with respect to becomes smaller. Of the rotational directions of the large flow rate region adjusting operation unit 100, the rotational direction (clockwise direction in FIG. 6) from the rotational position corresponding to the reference position toward the rotational position corresponding to the maximum position, that is, the liquid L The direction in which the flow rate increases is referred to as the rotation direction R.

  The flow rate range of the liquid L adjusted by the large flow rate range adjusting operation unit 100 is a large flow rate range that is the flow rate range of rapid infusion in an emergency, and is higher than the flow rate range of the liquid L adjusted by the small flow rate range adjusting operation unit 90. Is a large flow area. The large flow rate range can be, for example, 150 ml / min to 750 ml / min.

  As shown in FIG. 7, a rotation angle detection unit 110, a rotation angle restriction unit 120, and an urging unit 130 are attached to the large flow rate region adjustment operation unit 100.

  The rotation angle detection unit 110 detects the rotation angle θ with respect to the reference position of the knob 101 or the shaft 102 of the large flow rate region adjustment operation unit 100. As the rotation angle detection unit 110, for example, a potentiometer can be employed. However, the rotation angle detection unit 110 is not limited to a potentiometer.

  The rotation angle restricting unit 120 allows the large flow rate region adjusting operation unit 100 to rotate only in the rotation angle range from the rotation angle corresponding to the reference position to the rotation angle corresponding to the maximum position, and to the outside of the rotation angle range. The rotation of the flow rate region adjusting operation unit 100 is restricted. The rotation angle regulating unit 120 may regulate the rotation with respect to any of the knob unit 101 and the shaft unit 102. As the rotation angle restricting unit 120, for example, the configuration shown in FIG. 8A or FIG. 8B can be adopted. However, the rotation angle restricting portion 120 is not limited to the configuration shown in FIG. 8A or FIG.

  In FIG. 8A, a rod portion 104 extending in parallel with the shaft portion 102 is attached to the knob portion 101 of the large flow rate region adjusting operation portion 100. The rotation angle restricting portion 120 includes a reference position restricting plate 121 and a maximum position restricting plate 122 that prevent the rod portion 104 from moving when the rod portion 104 comes into contact therewith. The reference position restricting plate 121 is a plate member that prevents the rod portion 104 from moving so that the large flow rate region adjusting operation unit 100 does not rotate from the reference position to the opposite side of the rotation direction R. The maximum position restricting plate 122 is a plate member that prevents the rod portion 104 from moving so that the large flow rate region adjusting operation unit 100 does not rotate in the rotation direction R side from the maximum position.

  In FIG. 8 (b), a rod portion 104 extending in parallel with the shaft portion 102 is attached to the knob portion 101 of the large flow rate region adjusting operation portion 100. The rotation angle restricting portion 120 includes a restricting groove 123 into which the rod portion 104 is inserted to restrict the movement range of the rod portion 104. The restriction groove 123 is a groove that guides the shaft portion 102 only in the rotation angle range of the large flow rate region adjustment operation unit 100. More specifically, the restriction groove 123 is formed on the movement locus of the bar portion 104 accompanying the rotation of the large flow rate region adjustment operation unit 100. The end position on the side opposite to the rotation direction R in the restriction groove 123 is a position where the bar portion 104 abuts when the large flow rate region adjustment operation unit 100 becomes the reference position. The terminal position on the direction R side is a position where the bar portion 104 comes into contact when the large flow rate region adjusting operation unit 100 reaches the maximum position.

  The urging unit 130 urges (pushes) the large flow rate region adjustment operation unit 100 in a direction in which the displacement amount of the large flow rate region adjustment operation unit 100 decreases. That is, the urging unit 130 urges the large flow rate region adjustment operation unit 100 in the direction opposite to the rotation direction R so that the rotated large flow rate region adjustment operation unit 100 returns to the reference position. For this reason, when the large flow rate region adjusting operation unit 100 is rotated and rotated with respect to the reference position, the large flow rate region adjusting operation unit 100 is always biased in the direction opposite to the rotation direction R so as to return to the reference position. Note that energizing means applying a force by an elastic force such as a spring, that is, pushing.

  More specifically, the urging portion 130 is composed of an elastic member having elastic elasticity such as a spring. The urging unit 130 urges the knob 101 or the shaft 102 of the large flow rate region adjusting operation unit 100 in the direction opposite to the rotation direction R. As the urging unit 130, for example, the configuration shown in FIG. 9 can be adopted. However, the urging unit 130 is not limited to the configuration shown in FIG.

  In FIG. 9, a rod portion 104 extending in parallel with the shaft portion 102 is attached to the knob portion 101 of the large flow rate region adjusting operation portion 100. The urging portion 130 includes a torsion spring 131 that is locked to the rod portion 104 and a fixed rod portion 132 that is fixed to the rapid infusion device 1 and locks the torsion spring 131. The torsion spring 131 includes a coil part 131a, a first arm part 131b extending substantially linearly from one end of the coil part 131a, a second arm part 131c extending substantially linearly from the other end of the coil part 131a, It has. The torsion spring 131 is positioned by inserting the shaft portion 102 of the large flow rate region adjusting operation portion 100 into the coil portion 131a. The first arm portion 131 b is locked to the direction opposite to the rotation direction R of the fixed rod portion 132, and the second arm portion 131 c is locked to the rotation direction R side of the rod portion 104.

  For this reason, when the large flow rate region adjustment operation unit 100 is rotated from the reference position to the rotation direction R side, the first arm portion 131b is restricted from moving in the rotation direction R side by the fixed rod portion 132. When the coil portion 131 a is elastically deformed, the second arm portion 131 c is moved to the rotation direction R side by the rod portion 104. Then, the large flow rate region adjusting operation unit 100 is biased toward the direction opposite to the rotation direction R through the second arm portion 131c and the rod portion 104 by the restoring force of the coil portion 131a that is elastically deformed.

(Control processing)
Next, with reference to FIG. 10, the control method of the liquid feeding pump P1 by the control part 50 is demonstrated. In addition, the control process of the control part 50 shown below is repeatedly performed during the action | operation of the liquid feeding pump P1.

  First, the control unit 50 drives and controls the liquid feed pump P1 based on the amount of displacement with respect to the reference position of the small flow rate region adjustment operation unit 90 (S1). That is, in the small flow rate region, as the amount of displacement with respect to the reference position of the small flow rate region adjustment operation unit 90 increases, the flow rate of the liquid L fed by the liquid feed pump P1 is increased. The smaller the amount of displacement with respect to the position, the smaller the flow rate of the liquid L fed by the liquid feed pump P1.

  Next, the control unit 50 determines whether or not the large flow rate region adjustment operation unit 100 has been operated (S2). Whether or not the large flow rate region adjustment operation unit 100 has been operated is determined based on whether or not the detection result of a rotation angle detection unit such as a potentiometer that detects the rotation angle of the large flow rate region adjustment operation unit 100 has changed. can do.

  If it is determined that the large flow rate region adjustment operation unit 100 is not operated (S2: NO), the control unit 50 once terminates the process and performs the control process from S1 again.

  On the other hand, when it is determined that the large flow rate region adjustment operation unit 100 has been operated (S2: YES), the control unit 50 controls the liquid feed pump P1 based on the displacement amount with respect to the reference position of the large flow rate region adjustment operation unit 100. (S3). That is, in the large flow rate region larger than the small flow rate region, the flow rate of the liquid L fed by the liquid feed pump P1 increases as the displacement amount with respect to the reference position of the large flow rate region adjustment operation unit 100 increases. The smaller the amount of displacement of the adjustment operation unit 100 from the reference position, the smaller the flow rate of the liquid L fed by the liquid feed pump P1.

  Next, the control unit 50 determines whether or not the large flow rate region adjustment operation unit 100 has returned to the reference position (S4). Whether or not the large flow rate region adjustment operation unit 100 has returned to the reference position is, for example, the detection result of the rotation angle detection unit 110 that detects the rotation angle of the large flow rate region adjustment operation unit 100 and the rotation angle corresponding to the reference position. Can be determined based on the comparison of.

  If it is determined that the large flow rate region adjustment operation unit 100 has not returned to the reference position (S4: NO), the control unit returns to S3 and sends the large flow rate region adjustment operation unit 100 based on the displacement amount with respect to the reference position. The liquid pump P1 is driven and controlled. That is, drive control of the liquid feed pump P1 based on the amount of displacement of the large flow rate region adjustment operation unit 100 with respect to the reference position is continued until the large flow rate region adjustment operation unit 100 returns to the reference position.

  On the other hand, if it is determined that the large flow rate region adjustment operation unit 100 has returned to the reference position (S4: YES), the liquid feed pump P1 is driven and controlled based on the amount of displacement of the small flow rate region adjustment operation unit 90 relative to the reference position (S5). . That is, it returns to the state before determining that the large flow rate region adjustment operation unit 100 has been operated in S2. Then, once the process is finished, the control process is performed again from S1.

  Thus, according to the rapid infusion device 1 according to the present embodiment, when the operator of the rapid infusion device operates the small flow rate region adjustment operation unit 90 to adjust the flow rate, the liquid L is sent out by the liquid feed pump P1. The liquid L heated by the heating unit 80 can be infused into the patient. On the other hand, when the operator of the rapid infusion device 1 operates the large flow rate region adjustment operation unit 100 to adjust the flow rate, the flow rate in the large flow rate region is larger than the small flow rate region of the liquid L adjusted by the small flow rate region adjustment operation unit 90. Since the liquid L is sent out by the liquid feeding pump P1, the liquid L heated by the heating unit 80 can be rapidly infused into the patient. When the operator of the rapid infusion device 1 releases his hand from the large flow area adjustment operation unit 100, the external force applied to the large flow area adjustment operation unit 100 is released. The biasing force of the urging portion 130 moves in a direction in which the amount of displacement decreases and returns to the reference position. Thereby, it is possible to prevent forgetting to cancel the rapid infusion.

  In addition, when the large flow rate region adjustment operation unit 100 is operated, the control unit 50 drives and controls the liquid feed pump P1 based on the operation of the large flow rate region adjustment operation unit 100, thereby ensuring rapid infusion in an emergency. It can be carried out. On the other hand, when the large flow rate region adjustment operation unit 100 returns to the reference position, the control unit 50 drives and controls the liquid feed pump P1 based on the operation of the small flow rate region adjustment operation unit 90, so that the operator adjusts the large flow rate region. By simply releasing the hand from the operation unit 100, the rapid infusion can be canceled and returned to normal infusion.

  Further, since the large flow rate region adjustment operation unit 100 is rotatably provided and adjusts the flow rate of the liquid based on the rotation angle with respect to the reference position, the large flow rate region adjustment operation unit 100 is easily and intuitively used. Can be operated.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, in the above-described embodiment, the second operation unit (large flow rate region adjustment operation unit 100) has been described as a rotary type or a dial type. However, for example, it is a lever type as shown in FIG. Alternatively, a throttle lever type as shown in FIG.

  The second operation unit 140 shown in FIG. 11A includes a rotating shaft 141 that is rotatably supported, a lever 142 that extends from the tip of the rotating shaft 141 in a direction substantially orthogonal to the axial direction of the rotating shaft 141, and Is provided. The second operation unit 140 adjusts the flow rate of the liquid based on the rotation angle of the lever 142 with respect to the reference position when the lever 142 is swung with the rotation shaft 141 as a fulcrum.

  The second operation unit 150 shown in FIG. 11B includes a rod-shaped member 152 that is inserted into the linear slit 151 and guided by the slit 151, and a lever 153 attached to the tip of the rod-shaped member 152. . The rod-shaped member 152 can move linearly by the guide of the slit 151. Then, the second operation unit 150 controls the flow rate of the liquid based on the amount of movement of the rod-shaped member 152 relative to the reference position when the rod-shaped member 152 and the lever 153 are moved according to the guidance of the slit 151.

  In S5, the liquid feed pump P1 is driven and controlled based on the amount of displacement with respect to the reference position of the small flow rate region adjusting operation unit 90. However, the drive control amount (or the flow rate of the liquid L) of the liquid feed pump P1 is previously described. ) Is set, and when it is determined that the large flow rate region adjustment operation unit 100 has returned to the reference position (S4: YES), the drive control amount of the liquid feed pump P1 (or the flow rate of the liquid L) is changed to a preset value. It is good.

  DESCRIPTION OF SYMBOLS 1 ... Rapid infusion apparatus, 2 ... Liquid circuit, 3 ... Circuit panel, 3a ... Hole, 4 ... Reservoir bag, 4A ... Blood component storage bag, 4B ... Priming fluid storage bag, 4C ... Blood component storage bag, 5 ... Puncture Needle connection part, 7 ... Drip chamber, 7a ... Bubble outlet, 7b ... Liquid outlet, 7c ... Liquid inlet, 10 ... Liquid feeding line, 11 ... Upstream line, 12 ... Downstream line, 12a ... Branch part, DESCRIPTION OF SYMBOLS 13 ... Heating bag, 13a ... Serpentine flow path, 13b ... Inlet, 13c ... Outlet, 15 ... Line, 17 ... Line, 30a ... Detector, 30b ... First downstream detector, 30c ... Second downstream detector 31 ... Main clamp, 32 ... Sub clamp, 40 ... Housing, 40a ... Inclined surface, 40b ... Tray part, 41 ... Slot, 42 ... Receptacle, 43 ... Slope, 44 ... Hook, 45 ... Dolly part, 45a ... Caster 47 ... Stand unit, 50 ... Control unit, 60 ... Operation panel, 61 ... Display monitor, 62 ... Stop switch, 63 ... Various setting buttons, 70 ... Power supply unit, 80 ... Heating unit, 90 ... Small flow area adjustment operation unit (First operation part), 100 ... large flow rate region adjustment operation part (second operation part), 101 ... knob part, 102 ... shaft part, 103 ... concave part, 104 ... bar part, 110 ... rotation angle detection part, 120 ... Rotation angle restricting portion 121, reference position restricting plate 122, maximum position restricting plate 123, restricting groove 130, biasing portion 131 a, coil portion 131 b, first arm portion 131 c, second arm portion 132 DESCRIPTION OF SYMBOLS ... Fixed rod part, 140 ... Second operation part, 141 ... Rotating shaft, 142 ... Lever, 150 ... Second operation part, 151 ... Slit, 152 ... Bar-shaped member, 153 ... Lever, L ... Liquid, P1 ... Liquid feed pump , P2 ... Bubble removal Amplifier, R ... rotational direction, theta ... rotation angle.

Claims (4)

A rapid infusion device that rapidly infuses a liquid containing blood components,
A pump for feeding the liquid;
A first operation unit for adjusting the flow rate of the liquid;
A second operating unit for adjusting the flow rate of the liquid based on a displacement amount with respect to a reference position in a flow rate range larger than the flow rate range of the liquid adjusted by the first operating unit;
An urging unit that urges the second operation unit in a direction in which a displacement amount of the second operation unit with respect to the reference position is reduced;
A control unit that drives and controls the pump based on an operation of any one of the first operation unit and the second operation unit,
Rapid infusion device. When the second operation unit is operated, the control unit drives and controls the pump based on the operation of the second operation unit, and when the second operation unit returns to the reference position, the first operation unit Driving and controlling the pump based on the operation of
The rapid infusion device according to claim 1. The second operation unit is rotatably provided and adjusts the flow rate of the liquid based on a rotation angle with respect to the reference position.
The rapid infusion device according to claim 1 or 2. The second operation unit includes a rod-like member that can move linearly, and adjusts the flow rate of the liquid based on a movement amount of the rod-like member with respect to a reference position.
The rapid infusion device according to claim 1 or 2.

Images