KR20110059612A - Transfusion apparatus - Google Patents

Abstract

The infusion apparatus 1 is provided with the control part 12, the upper tube clamp part 5, the abnormality detection part 9, and the upper tube clamp part 5. The control unit 12 determines whether or not an abnormality has occurred in the fluid based on the signal output from the abnormality detecting unit 9, and when the abnormality has occurred, the upper tube clamp unit 5 is configured to be clamped. .

Description

Infusion Device {TRANSFUSION APPARATUS}

The present invention relates to an infusion apparatus used when administering a medicine solution or the like to a patient.

Conventionally, in the medical field, an infusion device for infusion therapy for a patient has been used (see Patent Document 1, for example). The infusion apparatus of patent document 1 is provided with the case part in which a part of the tube extended from an infusion container is accommodated and installed. Apart from this case portion, the tube clamp portion for clamping the tube is configured to be used together.

The case part includes a main body part and a door supported to be openable and close to the main body part. When the door of the case portion is opened, the tube clamp portion is operated to clamp the tube. Therefore, when a medical worker, such as a doctor or a nurse, opens a door, the tube clamp part can stop the flow of chemical liquids, etc. in a tube.

Japanese Patent Publication No. 2007-222485

By the way, since the tube clamp part of patent document 1 is comprised so that a door may operate, the patient will be patient until a medical practitioner opens a door, even if the droplet number of chemical | medical solution increased in more than a prescribed amount, for example in an infusion apparatus. There is a fear that the drug solution is continuously administered in a non-regulated amount.

This invention is made | formed in view of such a point, Comprising: It aims at improving the safety of fluid treatment by stopping the flow of the liquid in a tube automatically when an abnormality arises in a fluid delivery device.

In order to achieve the above object, in a first invention, an infusion device configured to administer a liquid in an infusion container to a patient, wherein the abnormality detection portion for detecting an abnormality in an infusion solution and the tube are clamped to stop the flow of the liquid in the tube. And a control unit connected to the tube clamp unit, the abnormality detecting unit, and the tube clamp unit to control the tube clamp unit based on a signal output from the abnormality detecting unit, wherein the control unit is output from the abnormality detecting unit. Based on the signal, it is determined whether or not an abnormality has occurred in the fluid, and if it is determined that the abnormality has occurred, the tube clamp portion is configured to switch from the non-clamped state to the clamped state.

According to this configuration, when an abnormality occurs in the fluid, the control part puts the tube clamp part in a clamped state, so that the flow of the liquid in the tube is stopped without the medical worker opening the door as in the conventional example.

In the second invention, in the first invention, the tube clamp portion presses the tube pressing portion and the tube receiving portion disposed to face each other so as to sandwich the tube in the radial direction, and the tube pressing portion is pressed in the direction approaching the tube receiving portion. And a driving device for moving the tube pressing part in a direction separated from the tube receiving part in response to the pressing force by the pressing part, and a driving force transmitting part for transmitting a driving force of the driving device to the tube pressing part. And the drive unit is connected to a control unit, and when the control unit determines that no abnormality has occurred in the fluid based on the signal output from the abnormality detecting unit, the control unit is in a direction in which the tube press unit is separated from the tube receiving unit. And configured to control the driving device to move the driving force transmission unit. Name added such that by the pressing portion in a pressurized state in a direction of approaching to the tube receiving section, configured to be separated from the tube pressing section.

According to this structure, when an abnormality arises, a tube is clamped by the tube press part and the tube receiving part by the pressing force of a pressurization part, and the flow of the liquid in a tube is stopped. When no abnormality occurs, the tube is brought into a non-clamped state by moving the tube pressing portion in a direction to be separated from the tube receiving portion by the drive device.

In addition, since the tube press is detachable from the driving force transmission unit, when the tube is clamped, the tube press can be detached from the driving force transmission unit and operated by a medical practitioner if the fluid is turned off or the driving unit is broken. Become.

In 3rd invention, in 2nd invention, it is equipped with the alarm connected to a control part, and the operation part connected to a control part, and operated by an operator, The said control part is an alarm so that an alarm may generate | occur | produce an alarm if it determines with abnormality in infusion. And controlling the tube clamp unit to be in a non-clamped state when the operation unit is operated to release an alarm.

According to this configuration, the tube does not open unless the operator releases the alarm by operating the operation unit. That is, the operator confirms the alarm and opens the tube.

In 4th invention, in 2nd or 3rd invention, it is provided with the case part provided in the state which a part of tube was accommodated, The said case part has a main body case part, and the door part attached to this main body case part so that opening and closing is possible, The tube pressing part and the tube receiving part are formed in the main body case part.

According to this structure, since the tube press part and the tube receiving part are arranged on the main body case part side, it becomes possible to maintain a clamp state even if the door part of a case part opens when a tube is clamped.

In the fifth aspect of the invention, in any one of the second to fourth inventions, the pressing portion is a coil spring, and the driving device is a motor.

According to this constitution, the force for clamping the tube is obtained by the coil spring with little fear of failure or the like, so that the tube can be reliably clamped when necessary. On the other hand, the operator's convenience is improved by making the tube non-clamp by the motor.

In the sixth invention, in any one of the second to fifth inventions, the drive unit and the drive force transmission unit are connected via a bevel gear, the drive unit is configured to rotate, and the tube clamp unit rotates by the drive unit. Configure the movement to go straight.

According to this structure, the freedom degree of arrangement | positioning of the drive force transmission part with respect to a drive device becomes high.

In the seventh invention, in any one of the second to sixth inventions, the tube pressing portion has a portion operated by an operator, and the portion is curved.

According to this configuration, when the medical staff operates the hand by the medical staff, the pressure applied to the finger is dispersed, thereby reducing the burden on the operation.

According to the first aspect of the invention, if the control section determines that an abnormality has occurred in the fluid based on a signal from the abnormality detecting section, the tube clamp section is clamped, so that the medical staff does not perform any action separately when the abnormality occurs. This can automatically stop the flow of water, improving the safety of the fluid treatment.

According to the second aspect of the invention, when an abnormality occurs, the tube can be clamped by the pressurizing portion of the tube clamp portion by the tube pressing portion and the tube receiving portion, and when the abnormality does not occur, Can be clamped. When the fluid is turned off or the drive is broken when the clamp is in the clamp state, the tube press can be detached from the driving force transmitting part to allow the medical worker to open the tube by itself and quickly cope with subsequent fluid treatment. have.

According to the third aspect of the present invention, the tube is opened by the operator releasing the alarm by the operation unit, so that the operator always checks the alarm before opening the tube, and can improve the safety of the infusion solution.

According to the fourth aspect of the invention, since the tube pressing portion and the tube receiving portion are disposed on the main body case side, the tube can be continuously clamped even if the door portion of the case portion is opened when the tube is clamped, and the safety of the fluid treatment can be improved. .

According to the fifth aspect of the invention, the clamping force of the tube can be obtained by the coil spring, and the tube can be made unclamped by the power of the motor. Thus, the operator's ease of separation can be improved while ensuring the safety of the fluid treatment.

According to the sixth invention, the degree of freedom in arranging the drive unit and the drive force transmission unit can be improved.

According to the 7th invention, since the part operated by an operator among the tube press parts is formed curved, the operability at the time of operating a tube press part by hand can be made favorable.

1 is a front view of the infusion device,
2 is a perspective view of a case portion of the infusion device opened;
3 is a perspective view of the tube clamp portion,
4 is a plan view of the tube clamp portion at normal times;
5 is a plan view when the tube is clamped by the tube clamp unit;
6 is a rear view when the tube pressing portion is separated from the driving force transmitting portion.
7 is a block diagram of the infusion device.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail based on drawing. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its applications, or its uses.

1 and 2 show the infusion device 1 of the present invention. The infusion device 1 includes a case portion 2 and a drop detector (abnormality detection portion) 9. As shown in FIG. 2, the case part 2 has a pump part 4, an upper tube clamp part 5, a bubble detection sensor part 6, a lower tube clamp part 8, and a control part 12 ( 7 only). The operation unit 10 and the color liquid crystal panel 11 are disposed on the front surface of the case unit 2.

The infusion device 1 includes a drip chamber 32 and a clamp 34 in a tube 33 extending from the infusion container 31 to the patient via the drip chamber 32 and the clamp (sap speed regulator) 34. Is placed in the middle of the The tube 33 is installed in the case portion 2 in a posture extending in the vertical direction. While checking the setting contents with the color liquid crystal panel 11, the operation unit 10 of the infusion apparatus 1 is operated to set the flow rate of the chemical liquid L to be administered to the patient, and then the pump unit 4 is When operated, the pumping action of the pump unit 4 is applied to the tube 33 so that the medicine liquid (liquid) L stored in the infusion container 31 can be administered to the patient via the drip chamber 32. It is composed.

Here, in the following description, for the convenience of explanation, unless otherwise specified, "left" and "right" mean the left and right sides of the infusion device 1 in use as shown in each figure, respectively. "Before" and "after" refer to the front and rear of the infusion device 1 in use, as shown in each figure, and "up" and "down" in use, as shown in each figure. The upper and lower sides of the infusion apparatus 1 shall respectively mean.

As shown in FIG. 2, the case part 2 includes a main body case part 21, a door part 22, and a door hinge 23. The door hinge 23 is configured to open and close the door part 22.

As shown to FIG. 1 and FIG. 2, the case part 2 is substantially rectangular parallelepiped shape. The operation part 10 is formed in the front part 22b of the door part 22. The operation unit 10 is provided with operation buttons for operating the infusion device 1, operation buttons for setting the infusion condition, and the like. The operation unit 10 is connected to the control unit 12. The operation signal of the various operation buttons of the operation unit 10 is configured to be input to the control unit 12.

The color liquid crystal panel 11 is disposed above the operation unit 10. The color liquid crystal panel 11 is configured to display an operation state of the infusion device 1, various setting information, and the like. The color liquid crystal panel 11 is configured to be connected to and controlled by the control unit 12.

As shown in FIG. 2, the said pump part 4 is arrange | positioned in the center of the door part opposing surface 21a in the main body case part 21. As shown in FIG. The pump portion 4 is formed with a protrusion 41 that protrudes forward and extends along the rim of the pump portion 4. Cut portions 41a are formed at both upper and lower ends of the protrusion 41. It is comprised so that the tube 33 may be fitted in the cut-out part 41a located above and below.

Inside the protruding portion 41, a plurality of fingers 42 extending left and right are arranged in a row in the vertical direction. The finger 42 is configured to sequentially move back and forth from the upper finger 42 to the lower finger 42 by a cam and a cam driving mechanism (not shown) mounted inside the main body case part 21. The pump section 4 is also connected to the control section 12.

The tube press part 43 is arrange | positioned in the position which opposes the pump part 4 in the main body case part opposing surface 22a of the door part 22. As shown in FIG. When the door part 22 is closed, the tube 33 is inserted in the radial direction between the tube pressing part 43 and the finger 42. Then, by moving the finger 42 back and forth as described above, the tube 33 is appropriately pressed from the top to the bottom in order. Thereby, the medicine liquid L can be administered to a patient.

As shown in FIG. 2, the upper tube clamp part 5 is arrange | positioned above the pump part 4. 3 to 6, the upper tube clamp portion 5 includes a clamp plate 50, a motor 51, a driving force transmission portion 52, a movable portion 53, a fixing portion 56, and a limit switch 57. ) And coil spring (B).

The clamp plate 50 is equipped with the 1st board part 50a, the 2nd board part 50b, the 1st mounting plate part 50c, and the 2nd mounting plate part 50d.

The first plate portion 50a is formed in a substantially rectangular shape extending in the front-rear direction. The second plate portion 50b is disposed on the right side of the front end of the first plate portion 50a. The first mounting plate portion 50c is disposed on the left side of the front end of the first plate portion 50a. As shown in FIG. 4, the through-hole H1 is formed in the substantially center of the 1st mounting plate part 50c. The left side of the clamp plate 50 is fixed to the case portion 2 by inserting a screw (not shown) into the through hole H1 from the rear side and engaging the case portion 2.

In addition, the second mounting plate portion 50d is disposed at the front end of the second plate portion 50b. Through-hole H2 is formed in the substantially center of 2nd mounting plate part 50d. The right side of the clamp plate 50 is fixed to the case part 2 by inserting a screw (not shown) from the rear side to the through hole H2 and engaging the case part 2.

As shown in FIG. 3, the shaft support part 50e is attached to the back of the 1st board part 50a. This shaft support 50e is formed in an inverted "c" shape. The shaft support part 50e is fastened to the 1st board part 50a by screws S4 and S5. Through-holes H3 and H4 penetrating in the front-rear direction are disposed concentrically in the shaft support part 50e. Bushes B1 and B2 are fitted into the through holes H3 and H4.

The motor 51 is attached to the shaft support part 50e via the motor mounting plate 50f. The motor mounting plate 50f is disposed substantially parallel to the first plate portion 50a and is fastened to the shaft support portion 50e by four screws S. As shown in FIG.

The motor 51 is fixed to the motor mounting plate 50f in a posture whose rotation axis is orthogonal to the direction in which the motor mounting plate 50f extends. Therefore, the rotation axis of the motor 51 extends in the vertical direction of the infusion apparatus 1. The rotating shaft of the motor 51 passes through the vicinity of the center of the motor mounting plate 50f and protrudes into the shaft support part 50e. The motor side bevel gear 51a is attached to the front end of the rotating shaft of the motor 51. The motor 51 is connected to the control unit 12.

The driving force transmission unit 52 includes a shaft 52a, a shaft side bevel gear 52b, a thrust bearing 52c, a male thread portion 52d, and a driving rod 52e.

The shaft 52a is disposed to extend in the front-back direction so as to be orthogonal to the rotation axis of the motor 51, and is rotatably supported in the inserted state into the bushes B1 and B2. The shaft side bevel gear 52b is fixed between the bush B1 and the bush B2 of the shaft 52a. The shaft side bevel gear 52b is positioned to engage with the teeth of the motor side bevel gear 51a. Thereby, when the rotating shaft of the motor 51 rotates, the shaft 52a will rotate.

Since the rotational force of the motor 51 is transmitted to the shaft 52a through the motor side bevel gear 51a and the shaft side bevel gear 52b, the rotation shaft of the motor 51 and the shaft 52a do not have to be arranged in parallel. The degree of freedom of arrangement of the motor 51 and the shaft 52a is improved.

In front of the bush B1 of the shaft 52a, a male screw portion 52d formed by threading the outer peripheral surface thereof is disposed. The thrust bearing 52c is interposed between the bush B1 and the male thread portion 52d.

The driving rod 52e is also disposed in front of the thrust bearing 52c. The driving rod 52e is formed in a square shape extending in the same direction as the shaft 52a. Protrusions 52g and 52h are formed in the vicinity of the central portion of the driving rod 52e. The protruding portions 52g and 52h and the side of the driving shelf 52e are in contact with the first plate portion 50a, whereby the driving rod 52e is not rotated about its central axis. Moreover, the front end surface of the drive rod 52e is comprised by the curved surface which the center of left and right direction curves gently forward.

An internal thread hole (not shown) is formed in the driving rod 52e, which is opened in the rear section and extends forward. The male thread portion 52d of the shaft 52a is coupled to the female thread hole. When the male screw portion 52d rotates, the driving rod 52e in the rotation stop state moves in the central axis direction (rear direction) as described above. That is, the upper tube clamp portion 5 is configured such that the rotational movement of the motor 51 is converted into a straight movement.

The movable portion 53 includes a movable portion body 54 and a tube pressing portion 55. The movable part main body 54 is provided with the connection part 54a which protrudes to the front, the drive force receiving part 54b which protrudes to the left, the plate-shaped pressure receiving part 54c extended to the rear right side, and the overrun prevention part 54d.

The connecting portion 54a is connected to the rear end of the tube pressing portion 55. A driving force transmitting plate 54e is formed in the driving force receiving portion 54b. The driving force transmission plate 54e is configured to be in contact with the front end face of the driving rod 52e. The driving force transmitting plate 54e is not fixed to the driving rod 52e, and is configured to be detachable from the driving rod 52e.

The through hole H5 is formed in the pressure receiving part 54c. The through hole H5 is configured such that one end of the coil spring B is caught.

The overrun prevention portion 54d is formed in the pressing force receiving portion 54c. 54 f of female thread holes penetrating to the left and right are formed in this pressing force receiving part 54c. The switch operating screw 54g is engaged with the female threaded hole 54f. The switch operating screw 54g is configured to project from the overrun prevention portion 54d to the left side when engaged with the female threaded hole 54f.

Through-holes (not shown) which penetrate in the plate | board thickness direction of the 1st board part 50a are formed in the substantially center of the movable part main body 54. As shown in FIG. The screw S1 is inserted into this through hole. Screw (S1) is coupled to the first plate portion 50a, the movable portion main body 54 is configured to rotate around the screw (S). The distance from the screw S1 to the through hole H5 is configured to be 30 mm to 40 mm.

The tube pressing portion 55 has a pressing portion main body 55a and a tip portion 55b. The pressing part main body 55a is formed in the plate shape extended back and forth. The rear end of the pressing portion main body 55a is connected to the connecting portion 54a of the movable portion main body 54. The pressing part main body 55a is formed thinner than the connection part 54a.

The tip portion 55b is disposed at the front end of the pressing portion main body 55a. The front end surface of the front end part 55b is comprised by the curved surface curved forward. The tip part 55b is formed thicker than the press part main body 55a. In addition, the width of the left and right of the tip portion 55b is wider than the width of the pressing portion main body 55a. The distance from the distal end portion 55b of the tube pressing portion 55 to the screw S1 is configured to be 30 mm to 40 mm.

As shown in FIG. 3, a boss-shaped screw engaging portion 50g is formed on the front right side of the first plate portion 50a so as to protrude from the first plate portion 50a. Screw (S2) is coupled to the screw coupling portion (50g). The other end of the coil spring B is fixed to the first plate portion 50a by this screw S2. This coil spring B is a tension spring, and a spring constant is set in the range of 0.1 kgf / mm to 0.15 kgf / mm.

The fixing portion 56 is mounted to the front end of the first plate portion 50a. The fixing portion 56 includes a right portion 56a, a tube receiving portion 56b, and an inserting portion 56c into which the tube pressing portion 55 is inserted, a right mounting portion 56d, and a left mounting portion 56e.

The right protrusion 56a and the tube receiving portion 56b protrude forward than the front end of the first plate portion 50a, and are spaced apart from each other in the left and right directions. The inserting portion 56c is disposed between the right protrusion 56a and the tube receiving portion 56b. The insertion portion 56c is formed with a through hole (not shown) penetrating back and forth. The pressing part main body 55a of the tube pressing part 55 is inserted into this through hole (not shown). When the movable part main body 54 is rotated, the press part main body 55a is comprised so that it may move left and right between the right protrusion part 56a and the tube receiving part 56b in the fixing part 56. As shown in FIG.

The right mounting portion 56d and the left mounting portion 56e protrude backwards and are fastened to the first plate portion 50a by screws S3.

That is, by the coil spring B, the movable part main body 54 is pressed in the direction from which the tube press part 55 approaches the tube receiving part 56b of the fixing part 56. As shown in FIG. At this time, as shown in FIG. 5, if the driving rod 52e is retracted, the coil spring B will be in the state which the upper tube clamp part 5 clamped by the pressing force, and the tube 33 presses the tube. It fits in the radial direction between the part 55 and the tube receiving part 56b, and is occluded. The pressing force of the coil spring B is sufficient to close the tube 33.

On the other hand, as shown in FIG. 4, when the male screw part 52d is rotated by the motor 51 so that the driving rod 52e of the upper tube clamp part 5 may move forward, the coil spring b will resist a pressing force. The movable part main body 54 is rotated so that the tube pressing part 55 is separated from the tube receiving part 56b of the fixing part 56, and the upper tube clamp part 5 is switched from the clamped state to the non-clamped state.

When the motor 51 is reversely rotated so that the driving rod 52e is moved backward, the tube clamp portion 5 is changed from the non-clamped state to the clamped state as described above.

The limit switch 57 is behind the movable part main body 54 and is arrange | positioned between the overrun prevention part 54d and the drive rod 52e. The limit switch 57 is provided with the right switch part 57a and the left switch part 57b, respectively, and is comprised so that ON and OFF may be switched independently. The limit switch 57 is connected to the control part 12.

As shown in FIG. 4, the plate switch 57c is arrange | positioned at the right side surface of the right switch part 57a. When the movable part 53 is rotated about the screw S1, the tip of the switch operation screw 54g of the overrun prevention part 54d is comprised in contact with the plate switch 57c. It is comprised so that ON and OFF of the right switch part 57a may be switched by the contact of the switch operation screw 54g.

On the left side of the left switch portion 57b, the convex switch 57d is arranged to protrude to the left. When the driving rod 52e slides backward, the protrusion 52g of the driving rod 52e comes in contact with the convex switch 57d. It is comprised so that ON and OFF of the left switch part 57b may be switched by the contact of the projection part 52g. The limit switch 57 is connected to the control part 12.

2, the tube clamp interference avoiding part 58 is arrange | positioned in the position which opposes the upper tube clamp part 5 on the main body case part opposing surface 22a of the door part 22. As shown in FIG. The tube clamp interference avoiding part 58 is formed concave so that the main body case part opposing surface 22a may not interfere with the upper tube clamp part 5 when the door part 22 is closed.

The bubble detection sensor part 6 is disposed above the upper tube clamp part 5 of the main body case part 21. The bubble detection sensor part 6 includes the main body side bubble detection sensor part 61 disposed on the door part opposing surface 21a of the main body case part 21 and the main body case part opposing surface 22a of the door part 22. The door side bubble detection sensor part 62 arrange | positioned at ()) is provided.

The main body side bubble detection sensor part 61 is equipped with the main body side sensor 61a. Moreover, the door side bubble detection sensor part 62 is equipped with the door side sensor 62a. The main body side sensor 61a and the door side sensor 62a are ultrasonic sensors. When the door part 22 is closed, the tube 33 is fitted by the main body side sensor 61a and the door side sensor 62a, and it is comprised so that an ultrasonic wave may permeate | transmit a tube. At this time, if bubbles are mixed in the chemical liquid L passing through the tube 33, the chemical liquid L and the bubble have different transmittances of ultrasonic waves, so that the presence of the bubbles in the chemical liquid L can be detected by detecting the change in the transmittance. Can be.

The lower tube clamp part 8 is disposed below the pump part 4 of the main body case part 21. The lower tube clamp portion 8 includes a tube receiving portion 89 and a tube pressing portion 82 disposed to face each other. The tube pressing portion 82 is formed to protrude from the front surface of the main body case portion 21. The tube receiving part 89 protrudes forward from the opening 81 formed in the front surface of the main body case part 21. The tube pressing portion 82 is configured to move in a direction approaching and spaced apart from the tube receiving portion 89, and is pressed in a direction approaching the tube receiving portion 89 by a pressing member (not shown). The tube 33 is configured to be clamped by the tube receiving portion 89 and the tube pressing portion 82 by the pressing force of the pressing member.

The tube receiving portion 89 is formed with a recessed locking portion 89a. At the tip of the tube pressing portion 82, a projection 82d is formed, which projects toward the tube receiving portion 89. As shown in FIG. The up-down width of the concave locking portion 89a is formed to be wider than the up-down width of the tip of the protrusion 82d of the tube pressing portion 82, and the tube pressing portion 82 approaches the tube receiving portion 89. It is comprised so that the front-end | tip of the projection part 82d may enter into the recessed locking part 89a when it moves to the direction.

The clamp release lever 85 is disposed on the right side of the tube receiving portion 89 of the main body case portion 21. When the clamp release lever 85 is rotated, the tube pressing portion 82 can be separated from the tube receiving portion 89 to be in a non-clamped state.

Moreover, in the door part 22, the concave tube clamp interference avoiding part 8a is arrange | positioned in the position which opposes the lower tube clamp part 8 in the main body case part opposing surface 22a. In the tube clamp interference avoiding part 8a, when the door part 22 is closed, the clamp release protrusion 8b which engages with the tube press part 82 of the lower tube clamp part 8 is formed. When the door portion 22 is closed, the clamp releasing projection 8b abuts on the tube pressing portion 82, so that the clamp releasing projection 8b causes the tube pressing portion 82 to move from the tube receiving portion 89. It is moved in the disengaging direction to become a non-clamped state.

In addition, when the door part 22 is opened, the clamp releasing protrusion 8b does not come into contact with the tube pressing part 82, thereby moving the tube pressing part 82 in a direction approaching the tube receiving part 89, thereby clamping the clamp. It becomes a state.

As shown in FIG. 2, the drop detector 9 has an almost rectangular parallelepiped shape. The drip chamber holding part 91 of the shape which penetrates up and down is formed in the center part of the drop detector 9 so that the drip chamber 32 may be fitted. The drop detector 9 includes a light emitting element and a light receiving element which are arranged to sandwich the drip chamber 32. Light emitted from the light emitting element toward the light receiving element is blocked by the drop falling in the drip chamber 32, and the drop of the drop can be detected by the change in the amount of received light. The drop detector 9 is connected to the control unit 12.

In addition, an alarm 7 (shown in FIG. 7) is disposed in the case 2. The alarm 7 is comprised by the speaker etc. which generate | occur | produce a sound, and is connected to the control part 12. As shown in FIG.

Next, the control part 12 of the infusion apparatus 1 is demonstrated. The control unit 12 counts the drop falling number within a predetermined time based on the signal output from the drip detection unit 9. The control unit 12 is configured to detect whether or not the number of drop drops within a predetermined time is a predetermined value or more, and determine that the drop state of the drop is abnormal when predetermined or more, and determine that it is normal when less than the predetermined value.

Moreover, the control part 12 determines that abnormality is detected, when air bubbles are mixed in the chemical | medical solution L in the tube 33 based on the signal output from the bubble detection sensor part 6, and air bubbles are not mixed. Otherwise it is determined to be normal.

And if it determines with abnormality, the control part 12 gives the upper tube clamp part 5 the command to switch from a non-clamp state to a clamp state. That is, when the upper tube clamp part 5 receives a command from the control part 12, the motor 51 rotates so that the tube press part 55 and the tube receiving part 56b may be in a clamped state. At this time, as shown in FIG. 5, the driving rod 52e moves back. When the protruding portion 52g of the driving rod 52e contacts the convex switch 57d of the limit switch 57, the control unit 12 detects it and stops the motor 51.

Moreover, the control part 12 makes the upper tube clamp part 5 into a clamp state, and produces an alarm sound to the alarm 7 substantially simultaneously.

In addition, when the pump part 4 is in operation, the upper tube clamp part 5 is clamped, and the pump part 4 is commanded almost simultaneously to stop the pump part 4. The color liquid crystal panel 11 is also instructed to display the color liquid crystal panel 11 that an abnormality has occurred.

When the alarm is released by operating the operation button of the operation unit 10, the control unit 12 instructs the upper tube clamp unit 5 to be in a non-clamped state. That is, the upper tube clamp part 5 rotates the motor 51 so that the tube press part 55 and the tube receiving part 56b may be in a non-clamped state, when the instruction | command from the control part 12 is received. At this time, the driving rod 52e moves to the front opposite to the above. As shown in FIG. 6, when the switch operating screw 54g of the movable part main body 54 contacts the plate switch 57c of the limit switch 57, the control part 12 detects it and stops the motor 51. As shown in FIG. . Thereafter, the control unit 12 operates the pump unit 4.

Next, the case where the infusion device 1 is used will be described. First, the fluid container 31, the drip chamber 32, the tube 33 and the clamp 34 are prepared. The clamp 34 is closed. The case part 2 of the infusion apparatus 1 is opened, and the door part 22 is opened, and the tube 33 is attached to the main body case part 21. At this time, the clamp release lever 85 is operated to bring the lower tube clamp portion 8 into an unclamped state. The upper tube clamp portion 5 is also in an unclamped state.

In this state, a portion of the tube 33 is passed through the front surface of the main body side sensor 61a of the bubble detection sensor unit 6, so that the tube receiving portion 56b and the tube pressing portion 55 of the upper tube clamp portion 5 are passed. Pass it through. Then, the tube 33 is inserted into the cut portion 41a of the pump portion 4, and at the same time, the tube 33 is passed between the tube pressing portion 82 and the tube receiving portion 89 of the lower tube clamp portion 8.

After installing the tube 33 in this way, the door part 22 is closed and the clamp 34 is opened. The drip chamber 32 is provided in the drip chamber holding unit 91 of the drop detector 9.

Next, the medical worker operates the operation unit 10 to turn on the power supply of the infusion device 1. When the control unit 12 of the infusion apparatus 1 is activated, the operation unit 10 is operated while looking at the color liquid crystal panel 11 to set the flow rate of the chemical liquid L to be administered to the patient, and the chemical liquid ( L) Start dosing. The upper tube clamp part 5 is set to the non-clamp state until abnormality arises.

After starting the administration of the chemical liquid L, if the control unit 12 determines that the drop state of the drop is abnormal based on the signal output from the drop detector 9, the pump unit 4 is stopped and the alarm unit 7 An alarm is generated and a warning or the like is displayed on the color liquid crystal panel 11. As a result, it is known that abnormalities have occurred to the people around them.

At this time, since the control unit 12 commands the upper tube clamp unit 5 to switch from the non-clamp state to the clamp state, the tube 33 is blocked and the flow of the chemical liquid L is stopped. This prevents the continuous administration of the chemical liquid L in an abnormal state.

Moreover, when it determines with abnormality based on the signal output from the bubble detection sensor part 6, the pump part 4 is similarly stopped, an alarm is generated by the alarm 7, and a warning is given to the color liquid crystal panel 11 And the like, and the upper tube clamp portion 5 is switched to the clamp state.

When the upper tube clamp portion 5 is in the clamped state, if the power supply of the infusion apparatus 1 is turned off or the motor 51 is broken, the tube pressing portion 55 is directed in the direction of the arrow A shown in FIG. Press Then, as shown in FIG. 6, the movable part main body 54 rotates in the direction from which the driving force transmission board 54e of the movable part main body 54 is isolate | separated from the front end of the drive rod 52g. As a result, the tube pressing portion 55 is separated from the tube receiving portion 56b of the fixing portion 56, and the upper tube clamp portion 5 is switched to the non-clamp state.

At this time, the medical worker manipulates the tip portion 55b of the tube pressing portion 55 by hand. Since the tip portion 55b is formed of a curved surface, the force applied to the finger is distributed. In addition, since the spring constant of the coil spring B is set within the range of 1.5 kgf / mm to 2.5 kgf / mm, the tube 33 can be easily opened by manual operation.

When the alarm is released by the operation button of the operation unit 10 after dealing with the abnormal state, the control unit 12 commands the upper tube clamp unit 5 to be in a non-clamped state, so that the tube 33 Open. After that, the pump unit 4 is operated to resume the administration of the chemical liquid (L).

As described above, according to the infusion apparatus 1 according to this embodiment, when the control unit 12 determines that the abnormality is in the infusion, the upper tube clamp portion 5 is clamped, thereby increasing the safety of the infusion treatment. .

 In addition, since the tube pressing portion 55 is configured to be separated from the driving force transmitting portion 52, when the upper tube clamp portion 5 is in the clamped state, the power supply of the infusion apparatus 1 is turned off or the motor 51 fails. Even if it does, the tube press part 55 can be moved by hand, and the tube 33 can be opened manually. This allows the medical practitioner to quickly perform subsequent fluid therapy.

In addition, since the tube 33 is opened by an operation of releasing the alarm by the operation unit 10, the medical worker must confirm the alarm before opening the tube 33, and can improve the safety of the fluid treatment.

In addition, since the tube clamp portion 8 is disposed on the main body case portion 21 side, the tube 33 can be clamped by the tube clamp portion 8 even when the door portion 22 of the case portion 2 is open. This can improve the safety of fluid therapy.

Moreover, since the moving direction of the drive force transmission part 52 cross | intersects the direction of the rotation axis of the motor 51, the freedom degree of arrangement | positioning of the motor 51 and the drive force transmission part 52 can be improved.

Moreover, since the curved surface is formed in the front-end | tip part 55b of the tube press part 55, the burden on a finger when opening the tube 33 manually can be reduced, and operability can be improved.

Here, in the above embodiment, it is determined whether or not an abnormality has occurred in the fluid based on the signals output from the bubble detection sensor unit 6 and the drop detector 9, but the present invention is not limited thereto. You may determine whether abnormality occurred in infusion.

[Industry availability]

As described above, the infusion device according to the present invention is suitable for administering a medicine solution to a patient, for example, in a medical field.

1: Infusion device 2: Case
4 pump portion 5 upper tube clamp portion
6 bubble detection sensor 7 alarm
9: Drop detector (abnormality detection part) 10: Operation part
12 control unit 21 main body case
22: door part 31: infusion container
33: tube 51: motor (drive mechanism)
51a: Motor side bevel gear 52: Driving force transmission part
52b: Shaft side bevel gear 52d: Male threaded portion
55 tube pressing part 56b tube receiving part
L: Liquid B: Coil Spring (Pressure Part)

Claims (7)

An infusion device configured to administer a liquid in an infusion container to a patient,
An abnormality detection unit for detecting an abnormality in the fluid,
A tube clamp portion for clamping the tube to stop the flow of liquid in the tube;
A control unit connected to the abnormality detecting unit and the tube clamp unit and controlling the tube clamp unit based on a signal output from the abnormality detecting unit,
The control unit is configured to determine whether or not an abnormality has occurred in the fluid based on the signal output from the abnormality detecting unit, and if it is determined that the abnormality has occurred, the tube clamp unit is configured to switch from a non-clamped state to a clamped state. By
Infusion device. The method of claim 1,
Tube clamp part,
A tube pressing portion and a tube receiving portion disposed to face each other to sandwich the tube in a radial direction,
A pressurizing portion for urging the tube pressing portion in a direction approaching the tube receiving portion;
A driving device which moves the tube pressing part in a direction separated from the tube receiving part in response to a pressing force by the pressing part;
Has a driving force transmission for transmitting the driving force of the drive device to the tube pressing,
The driving device is connected to the control unit,
The control unit is configured to control the drive device to move the tube pressing part in a direction to be separated from the tube receiving part when it is determined that no abnormality has occurred in the fluid based on the signal output from the abnormality detecting part. ,
The driving force transmitting unit is configured to be detachable from the tube pressing unit in a state where the tube pressing unit is pressed in a direction approaching the tube receiving unit by the pressing unit.
Infusion device. The method of claim 2,
An alarm connected to the control unit,
A control unit connected to the control unit and operated by an operator,
The control unit is configured to control the alarm unit to generate an alarm when it is determined that an abnormality has occurred in the fluid, and to control the tube clamp unit to be in a non-clamped state when the operation unit is operated to release the alarm.
Infusion device. The method according to claim 2 or 3,
It has a case portion which is installed with a portion of the tube accommodated,
The case part has a main body case part, and a door part to be opened and closed to the main body case part,
Tube pressing portion and tube receiving portion is characterized in that formed in the main body case
Infusion device. The method according to any one of claims 2 to 4,
The pressing part is a coil spring,
The drive device is characterized in that the motor
Infusion device. The method according to any one of claims 2 to 5,
The driving unit and the driving force transmission unit are connected via the bevel gear,
The driving device is configured to rotate
The tube clamp part is configured to convert the rotational movement by the drive device into a straight movement.
Infusion device. The method according to any one of claims 2 to 6,
The tube pressing portion has a portion operated by an operator, and the portion is curved.
Infusion device.

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