JP2011212350A - Detector residual amount of perfusate, and perfusion suction apparatus with the same - Google Patents

Detector residual amount of perfusate, and perfusion suction apparatus with the same Download PDF

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JP2011212350A
JP2011212350A JP2010084685A JP2010084685A JP2011212350A JP 2011212350 A JP2011212350 A JP 2011212350A JP 2010084685 A JP2010084685 A JP 2010084685A JP 2010084685 A JP2010084685 A JP 2010084685A JP 2011212350 A JP2011212350 A JP 2011212350A
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Prior art keywords
perfusate
remaining amount
container
sensor
perfusion
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JP2011212350A5 (en
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Nobuo Suzuki
Mutsumi Watase
睦巳 渡瀬
信雄 鈴木
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Nidek Co Ltd
株式会社ニデック
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Abstract

PROBLEM TO BE SOLVED: To provide a detector for the residual amount of perfusate, which can detect and inform the remaining amount of the perfusate with the perfusate remained in a container.SOLUTION: The detector for the residual amount of the perfusate in the perfusate container containing the perfusate to be supplied to a patient eye includes: a holding member for holding the perfusate container; a sensor for detecting the weight of the perfusate container over time by detecting a move of the holding member or its load over time, and for emitting a detection signal; a calculation unit having a prescribed reference value corresponding to the residual amount level of the perfusate, and comparing the reference value with the detection signal from the sensor; and an annunciation unit informing of the residual amount of the perfusate based on the calculated result by the calculation unit.

Description

  The present invention relates to a perfusate remaining amount detection device that detects the remaining amount of perfusate supplied into a patient's eye in ophthalmic surgery such as cataract surgery, and a perfusion suction device including the same.

  In cataract surgery, vitreous surgery, etc., a perfusion suction device is used that sucks and removes perfusate (waste fluid) together with waste tissue while injecting (supplying) perfusate into a patient's eye. For example, in cataract surgery, the perfusate is injected into the patient's eye via a perfusion tube connected to a surgical instrument for crushing and emulsifying the lens. The perfusate to be injected is contained in a container (glass bottle, plastic pack, etc.), and the container is set at a predetermined height so that the perfusate is injected into the patient's eye with a predetermined pressure. . If the perfusate in the container disappears during the operation and the supply of the perfusate is stopped, the anterior chamber collapses due to insufficient supply of the perfusate into the patient's eye, which is not preferable. In the apparatus of Patent Document 1, a technique for detecting the pressure of the perfusate supplied from inside the container has been proposed. Using such a technique, it is conceivable to detect the remaining amount of the perfusate by detecting the pressure or supply pressure of the perfusate and to inform the operator, operator, etc. of the information.

Japanese National Publication No. 4-504514

  For example, in cataract surgery, a plurality of patients may be sequentially operated within the same day. In such a case, several operations may be performed with one perfusate container. The remaining amount of the perfusate is confirmed by an operator or the like, and the container is replaced with a new container before the perfusate is used up. However, since the technique of Patent Document 1 is configured to detect the liquid level position of the perfusate, the perfusate may be lost from the container when the remaining amount of the perfusate is detected, which is not preferable.

  In view of the above-described problems of the prior art, an object of the present invention is to provide a perfusate remaining amount detection device capable of detecting and notifying the remaining amount of perfusate while the perfusate remains in the container. Moreover, let it be a technical subject to provide the perfusion suction apparatus provided with such a perfusate residual amount detection apparatus.

In order to solve the above problems, the present invention is characterized by having the following configuration.
(1) A perfusate remaining amount detection device for detecting a remaining amount of perfusate in a perfusate container for storing a perfusate to be supplied into a patient's eye,
A holding member for holding the perfusate container;
A sensor for detecting the weight of the perfusate container over time by detecting the movement or load of the holding member over time, and generating a detection signal;
An arithmetic unit having a predetermined reference value corresponding to the remaining amount of the perfusate and comparing the reference value with a detection signal of the sensor;
A notification unit for notifying the remaining amount of the perfusate based on the calculation result of the calculation unit;
It is characterized by having.
(2) The perfusate remaining amount detection device of (1)
A display for displaying information on different types of perfusate containers;
A storage unit that stores setting values corresponding to the weights of different types of perfusate containers;
Have
The arithmetic unit determines the type of the perfusate container by comparing the detection signal of the sensor with the set value when the perfusate container is held by the holding unit, and based on the determination result, Display the type of information on the display unit,
It is characterized by that.
(3) In the perfusate remaining amount detection device of (2),
The reference value is determined corresponding to the total weight of each perfusate container when the remaining amount of the perfusate in different types of perfusate containers is a predetermined amount.
It is characterized by that.
(4) In the perfusate remaining amount detecting device of (2),
The reference value is determined in accordance with a decrease amount of the perfusate weight from the set value.
It is characterized by that.
(5) In the perfusate remaining amount detection device according to any one of (1) to (4),
The holding member includes a hook member that suspends the perfusate container, a biasing member that biases the hook member upward, and a contact member that houses the hook member and the biasing member.
The sensor is a stress sensor that detects a load of a corresponding contact member as a stress.
It is characterized by that.
(6) A perfusate remaining amount detecting device according to any one of (1) to (5) is provided.

  According to the present invention, the remaining amount of the perfusate can be detected and notified while the perfusate remains in the container.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic external view of a perfusion suction device including the perfusate remaining amount detection device of the present embodiment. FIG. 2 is a schematic block diagram showing a control system of the perfusion suction device. FIG. 3 is a schematic external view and a schematic cross-sectional view of a sensor unit of the perfusate remaining amount detection device. FIG. 4 is a schematic external view of a main unit (operation unit) of the perfusate remaining amount detection device. FIG. 5 is a schematic block diagram illustrating a control system of the perfusate remaining amount detection device. FIG. 6 is a diagram showing a modification example of the perfusate container.

  On the upper surface of the perfusion suction device 100, an operation / display panel 10 having a touch panel function is provided. Further, a connection panel 11 having a connector to which cables of various surgical instruments are connected is provided on the front surface of the apparatus 100. Moreover, the 1st cassette holder 21 and the 2nd cassette holder 22 in which the 1st cassette 31 and the 2nd cassette 32 for a cataract operation are attached are provided in the side surface of the apparatus 100. FIG.

  A perfusion bottle (perfusion fluid container) 301 and / or a perfusion bag (perfusion fluid container) 311 in which a perfusion fluid such as physiological saline supplied into the patient's eye is placed is a support portion 41 provided at the upper end of the pole 40. The sensor unit 210 is suspended. In the present embodiment, two support portions 41 are provided. Accordingly, when the cassettes 31 and 32 are used in two systems in cataract surgery, two perfusion bottles 301 and / or two perfusion bags 311 can be used. The pole 40 is moved up and down by the drive unit 42, and the height of the perfusion bottle 301 and / or the perfusion bag 311 is changed. Thereby, the pressure (supply pressure, perfusion pressure) of the perfusate injected (supplied) into the patient's eye is adjusted. A main unit (operation unit) 230 is attached to the middle of the pole 40, and the main unit 230 and the sensor unit 210 are connected by a cable 290.

  The perfusion bottle 301 is a container for storing the perfusate in a bottle (bottle) made of a hard material such as glass. The perfusion bag 311 is a container for storing the perfusion solution in a bag (bag) formed of a soft material such as resin. The perfusion bottle 301 and / or the perfusion bag 311 have different capacities. For example, a perfusion bottle 301A having a capacity of 500 ml, a perfusion bottle 301B having a capacity of 250 ml, a perfusion bag 311A having a capacity of 500 ml, a perfusion bag 311B having a capacity of 250 ml, and the like. Various types and / or capacities of such containers are selected and used.

  In cataract surgery, as a surgical instrument, a handpiece (hereinafter referred to as US handpiece) 51 that crushes and emulsifies the lens nucleus in a patient's eye by ultrasonic vibration, and a handpiece for perfusion suction (hereinafter referred to as I / A handpiece) 52. And are used selectively. The perfusion tube 55 connected to the US handpiece 51 or the I / A handpiece 52 is connected to the connection port of the perfusion path of the cassette 31. The suction tube 56 connected to the US handpiece 51 or the I / A handpiece 52 is connected to the connection port of the suction path of the cassette 31. The US handpiece 51 may be connected to the cassette 31, the I / A handpiece 52 may be connected to the cassette 32, and the handpiece may be used in two systems (the combination of the handpiece and the cassette may be reversed). .

  The cassette holder 21 (22) includes a panel that forms the side surface of the apparatus 100, a slot into which the cassette 31 (32) is inserted, and a slot cover. The slot cover has a slide mechanism and holds the cassette 31 (32) inserted into the slot. Inside the cassette holder 21 (22), a roller unit 60 for holding a part of the suction tube 56 exposed outside the cassette 31 (32) is disposed. When the roller unit 60 rotates while holding the suction tube 56, the suction tube 56 is oscillated and a suction pressure is generated inside.

  For the configuration and operation of the cassette 31 (32), the technique disclosed in Japanese Patent Laid-Open No. 2008-35922 can be used. The cassette 31 (32) includes a perfusion liquid reservoir chamber, a connection port to which the perfusion tube 55 is connected, a connection port to which the perfusion tube 56 is connected, and a waste liquid bag.

  An operation / display panel 10, a connection panel 11, a drive unit 42, a roller unit 60, a foot switch 12, and the like are connected to an arithmetic / control unit (hereinafter referred to as a control unit) 70 that controls the apparatus 100. The foot switch 12 is a signal for starting / stopping the supply of the perfusate, a signal for starting / stopping the perfusion liquid (waste liquid), and the start of applying the ultrasonic vibration according to the depression position (stepping amount) by the operator's foot. / Increase / decrease / stop signals.

  Next, the configuration of the perfusate remaining amount detection device 200 that detects the remaining amount of the perfusate and notifies the operator or the like will be described. The sensor unit 210 includes a hook member (holding member) 211 that suspends and holds the perfusate container, a housing 212 that houses a sensor 220 that detects the weight of the perfusate container applied to the hook member 211, and the support unit 41. A fitting portion 213 that is fitted to stabilize the position of the sensor unit 210.

  A sensor 220 is fixedly disposed in the housing 212, and below the sensor 220, a hook support member 221, a spring 222 that is a biasing member, and a contact member 223 that contacts the sensor 220. Has been placed. A fixing portion (engaging portion) 222 a for engaging and fixing the upper end of the hook member 211 is formed at the lower end of the cylindrical hook support member 221, and a spring 222 is formed at the upper end of the hook support member 221. A spring receiving portion 221b that is in contact with the upper end of the spring and receives the biasing force of the spring 222 is formed. The lower end of the spring 222 is in contact with the housing 212 and urges the support member 221 together with the hook member 211 upward. The cylindrical abutting member 223 has an inner space for accommodating the hook support member 221 and the spring 222, and has an inner diameter that is slightly larger than the outer diameter of the spring receiving portion 221b in order to accommodate the spring receiving portion 221b without blurring. . A concave portion 223 a that contacts the convex portion 220 a at the lower center of the sensor 220 is formed at the upper center of the abutting member 223.

  In this embodiment, the sensor 220 is a stress sensor that detects stress (load or pressure) applied to the sensor 220. The sensor 220 detects the force continuously applied to the convex portion 220a as the amount of distortion, and issues a detection signal. The convex part 220a abuts on the concave part 223a. As a result, the contact member 223 is less likely to shake with respect to the sensor 220, and the sensor 220 is likely to receive a force from the contact member 223. The sensor 220 (convex portion 220a) is pushed upward by the hook support member 221 and the contact member 223 biased by the spring 222, and is constantly subjected to stress. For this reason, the sensor 220 issues a detection signal substantially corresponding to the urging force of the spring 222 even when nothing is hooked on the hook member 211.

  The urging force of the spring 222 is set so as not to cause an excessive load on the sensor 220 while constantly applying stress to the sensor 220. The spring 222 has an urging force that can lift the heaviest perfusion bottle 301 </ b> A of the perfusate container suspended from the hook member 211 upward. In this embodiment, the hook member 211, the hook support member 221 and the contact member 222 are about several grams each, only the bottle of the perfusion bottle 301A is about 300 g, 500 ml of perfusate is about 500 g, and the spring The urging force of 222 is about 1 kgf.

  Since the spring 222 is only in contact with the spring receiving portion 221b, the hook support member 221 is configured to freely rotate about the axis L. For this reason, the hook member 211 can also rotate freely. Further, since the contact member 223 is disposed between the hook support member 221 and the sensor 220, it is difficult for the sensor 220 to be subjected to a load due to the rotation even when the hook support member 221 is rotated.

  The main unit 230 placed at a position different from the sensor unit 210 includes a housing 231, a fixing member 232 for attaching and fixing the housing 231 to the pole 40, and a main operation panel 240 provided on the front surface of the housing 231. , An arithmetic / control unit (hereinafter referred to as a control unit) 270 that performs arithmetic processing and control in response to a detection signal from the sensor unit 210, a memory (storage unit) 271, and a buzzer 275 that emits sound. Although not shown, the main unit 230 is battery-driven, and a case for housing the battery is provided on the back surface of the housing 231. As the power source, for example, a 9V square battery is used.

  Since the main unit 230 is placed below the perfusate container, it is a drip-proof package. The fixing member 232 includes an arm extending laterally from the back surface of the housing 231, a concave portion having an inner diameter for accommodating the pole 40, and a screw for screwing the pole 40 accommodated in the concave portion.

  The main operation panel 240 performs various settings and other operations and displays information (type and volume) of the perfusate container. The main operation panel 240 includes an on / off switch 241 for the power source of the apparatus 200 that also serves as a pilot lamp, a battery lamp 242 for notifying that the voltage of the battery that drives the main unit 230 has dropped, and the first sensor unit 210. A first operation panel 250 and a second operation panel 260 for the second sensor unit 210. The operation panel 250 includes a warning lamp 251, a perfusion bottle capacity selection switch 252, operation (display) lamps 253 and 254 corresponding to the perfusion bottle capacity, a perfusion bag capacity selection switch 255, and a perfusion bag capacity. Corresponding actuating (indicating) lamps 256 and 257. The capacity selection switches 252 and 255 are provided with icons indicating the respective perfusate containers (perfusion bottles or perfusion bottles). The activation lamp 253 indicates the perfusion bottle 301A, and the activation lamp 254 indicates the perfusion bottle 301B. On the other hand, the operation lamp 256 indicates the perfusion bag 311A, and the operation lamp 257 indicates the perfusion bag 311B. The operation lamps (253, 254, 256 and 267) are turned on or blinked to display the perfusate container currently in use and notify the remaining amount thereof.

  Like the operation panel 250, the operation panel 260 includes a warning lamp, a capacity selection switch for the perfusate container, and an operation lamp, and thus the reference numerals thereof are omitted. Since the configuration and functions of the operation panel 260 are the same as those of the operation panel 250, the description of the operation panel 260 is omitted in the following description.

  The main unit 230 and the sensor unit 210 are connected by a cable 290. That is, the control unit 270 and the sensor 220 are communicably connected by the cable 290.

  Sensor 220, power switch 241, battery lamp 242, warning lamp 251, capacity selection switches 252 and 255, operation lamps 253, 254, 256 and 257, memory 271, buzzer 275, and the like are connected to control unit 270. . In the present embodiment, the warning lamp 251 and the operation lamps 253, 254, 256, and 257 perform display notification, and the buzzer 275 performs sound notification. In the present embodiment, the battery lamp 242 and the warning lamp 251 are red light emitting elements that are preferable for warning. Other lamps use green light emitting elements.

  The power switch 241 is turned on / off when pressed for about 2 seconds. When the battery is below the reference voltage, for example, when the voltage of the 9V battery falls below 6.5V, the control unit 270 blinks the battery lamp 242 and sounds the buzzer 275 to prompt for battery replacement.

  Next, selection of the perfusate container of the apparatus 200 will be described. When the perfusate container is suspended from the sensor unit 210, the control unit 270 determines the type and capacity of the perfusate container based on the detection signal of the sensor 220, and notifies the determination result. Specifically, the control unit 270 sets the detection signal of the sensor 220 and the set value corresponding to each perfusate container stored in advance in the memory 71 (in this embodiment, each perfusate in a state where the perfusate is filled). The value corresponding to the total weight of the container). As the set value, for example, considering the capacity of the perfusion solution container, the perfusion bottle 301A is a numerical value corresponding to 800g, the perfusion bottle 301B is 520g, the perfusion bag 311A is 510g, and the perfusion bag 311B is 255g. In order, V1, V2, V3, and V4. Note that the set value includes an allowable error.

  When the detection signal of the sensor 220 matches any of the set values, the control unit 270 turns on the operation lamp indicating the perfusate container corresponding to the set value and sounds the buzzer 275 to notify. For example, when the perfusion bottle 301 </ b> A is suspended from the sensor unit 210, the sensor 220 sends a detection signal corresponding to a weight of about 800 g to the control unit 270. When the control unit 270 compares the detection signal with one of the set values and determines that the detection signal and the set value V1 match, the control unit 270 turns on the operation lamp 253 and sounds the buzzer 275 to notify the determination result.

  In addition, when the detection signal of the sensor 220 does not match any of the set values, the control unit 270 notifies all of the operation lamps as an error by blinking and sounding the buzzer 275.

  Further, the control unit 270 prompts the operator or the like to select the perfusate container when the detection signal of the sensor 220 is about the middle value between the two set values. For example, when the perfusion bag 311A is suspended from the sensor unit 210, the sensor 220 sends a detection signal corresponding to the weight of the perfusion bag 311A to the control unit 270. Here, the detection signal is a signal corresponding to a weight of 515 g. The control unit 270 compares the detection signal of the sensor 220 with the set value. However, the control unit 270 cannot identify the perfusate container from this detection signal. This detection signal is an intermediate value between a value corresponding to 520 g which is the weight of the perfusion bottle 301B and a value corresponding to 510 g which is the weight of the perfusion bag 311A, and is difficult to determine by the control unit 270. Therefore, the control unit 270 notifies the perfusate container candidate based on the two set values. The control unit 270 flashes simultaneously the operation lamp 254 for the perfusion bottle 301B and the operation lamp 256 for the perfusion bag 311A, and prompts the selection of the container. When the operator or the like presses the volume selection switch 255, it is determined that the container is the perfusion bag 311A, and the control unit 270 turns on the operation lamp 256.

  Note that after the perfusate container is suspended from the sensor unit 210, the type and volume of the perfusate container may be manually set by operating the capacity selection switch 252 or 255. Thereby, even if it is a partially used perfusate container, the residual amount using the apparatus 200 can be detected.

  When the type and volume of the perfusate container suspended from the sensor unit 210 are determined, the control unit 270 continuously (periodically) acquires the detection signal of the sensor 220, and the sensor unit 210 is suspended. Start detection (monitoring) of the remaining amount in the perfusate container.

  Next, detection of the remaining amount of the perfusate in the apparatus 200 will be described. FIG. 7 is a schematic graph showing a decrease in perfusate. The horizontal axis of the graph indicates time, and the vertical axis indicates the weight of the perfusate container. For convenience of explanation, in FIG. 7, the set value is shown by replacing it with the weight.

  FIG. 7 shows a decrease in perfusate over time from the set values (V1 to V4) of the perfusion bottle 301A, the perfusion bottle 301B, the perfusion bag 311A, and the perfusion bag 311B. A value relative to the total weight when the remaining amount in each perfusate container is a predetermined amount (for example, 100 ml) is set as a reference value (threshold value). The remaining amount of the perfusate to be set is an amount that allows one cataract operation. The reference value is, for example, a value corresponding to the weight of 400 g for the perfusion bottle 301A, 370 g for the perfusion bottle 301B, 110 g for the perfusion bag 311A, and 105 g for the perfusion bag 311B. It is assumed that Th2, Th3 and Th4. The reference value is stored in the memory 271 in association with the set value. In this embodiment, the control unit 270 determines the perfusate container and starts detecting the remaining amount of the perfusate, and reads a reference value corresponding to the set value from the memory 271. The control unit 270 periodically compares the detection signal of the sensor 220 with the reference value, and when the detection signal reaches (below) the reference value, the remaining amount of the perfusate becomes 100 ml or less by the warning lamp 251 and the buzzer 275. Notify that.

  The perfusion bottle 301A will be described as an example. As described above, when the perfusion bottle 301A is suspended from the sensor unit 210, the control unit 270 compares the detection signal of the sensor 220 with each set value and determines that the detection signal matches the set value V1. . And the remaining amount detection of the perfusion bottle 301A is started. At this time, the control unit 270 reads the reference value Th1 stored corresponding to the installation value V1 from the memory 271. The control unit 270 periodically acquires the detection signal of the sensor 220 and compares it with the reference value Th1. When the detection signal reaches (below) the reference value Th1 (at time T1), the control unit 270 blinks the warning lamp 251 and sounds the buzzer 275 so that the remaining amount of the perfusate in the perfusion bottle 301A is 100 ml. Informs that it was below.

  In the case of other perfusate containers, the remaining amount is detected and notified in the same manner. In the case of the perfusion bottle 301B, when the detection signal of the sensor 220 reaches (below) the reference value Th2 at time T2, the warning lamp 251 blinks and the buzzer 275 is sounded. Similarly, in the case of the perfusion bag 311A, when the detection signal of the sensor 220 reaches (below) the reference value Th3 at time T3, a notification (warning) is performed. In the case of the perfusion bag 311B, when the detection signal of the sensor 220 reaches (below) the reference value Th4 at time T4, a notification (warning) is performed.

  Note that, as in the present embodiment, the configuration in which the hook member 211 and the like are urged upward by the spring 222, so that the remaining amount of the perfusate detected by the device 200 is maintained even when the urging force of the spring 222 is reduced. More than a predetermined amount (for example, 100 ml). For this reason, it is less likely to be notified after the remaining amount of the perfusate is exhausted.

  As described above, the remaining amount of the perfusate in the perfusate containers of different types and volumes can be detected. Moreover, it can alert | report in the state which left the specific residual quantity irrespective of a kind and capacity | capacitance.

  Note that the above reference value is not limited to the configuration determined corresponding to each set value. For example, when the control unit 270 determines the perfusate container suspended from the sensor unit 210 and determines the set value of the perfusate container, the capacity is determined from the set value, and the remaining amount is a predetermined amount (for example, 100 mL), in other words, a value corresponding to the decrease amount. Then, the control unit 270 sets the calculation result as a reference value, compares the reference value with the detection signal of the sensor 220, and detects the remaining amount. In addition, it is good also as a structure which converts the detection signal of the sensor 220 into a weight by calculation of the control unit 270 grade | etc.,. In this case, the set value and the reference value are also converted and used as weight.

  In addition, it is good also as a structure which detects and alert | reports the residual amount of a perfusate using both said 2 values, the reference value corresponding to a perfusate container, and the value corresponding to the decreasing amount of a perfusate. For example, when the detection signal reaches one of the values, the remaining amount is notified.

  Next, the operation | movement in the cataract operation | movement of the perfusate residual amount detection apparatus 200 which has the above structures, and the perfusion suction apparatus 100 provided with this is demonstrated. The surgeon or the like sets a surgical method using the operation panel 10 or the like, and connects the US handpiece 51 to the connection panel 11. Further, the suction tube 55 and the perfusion tube 56 are connected to the US handpiece 51 and the cassette 31 (32). Further, the apparatus 200 is attached and fixed to the apparatus 100. That is, the main unit 230 is attached to the pole 40 by the fixing portion 232, and the sensor unit 210 is attached to the support portion 41 by the fitting portion 213. Then, the operator or the like turns on the power of the apparatus 200 with the switch 241 and suspends the perfusion bottle 301A from the sensor unit 210 (hook member 211). The sensor 220 sends a detection signal corresponding to the weight of the suspended perfusion bottle 301 </ b> A to the control unit 270. The control unit 270 determines the perfusate container and notifies the result by the operation lamp 253 and the buzzer 275. The surgeon or the like connects the perfusion tube 55 to the perfusion bottle 301A and the cassette 31 (32).

  When the cataract operation is started and the perfusate is injected (supplied) into the patient's eye by operating the foot switch 12, the perfusate in the perfusion bottle 301A decreases. The remaining amount of the perfusate in the perfusion bottle 301A is periodically detected (monitored) by the control unit 270. When the remaining amount of the perfusate in the perfusion bottle 301A reaches about 100 ml, the warning lamp 251 blinks and the buzzer 275 sounds. Upon receiving notification from the apparatus 200, the surgeon determines whether to use the perfusion bottle 301A as it is or replaces it, and proceeds with the operation.

  In the above description, the type and volume of the perfusate container are displayed on the operation panel 250 (260). However, only one of them may be displayed. For example, when only the volume is displayed, the perfusate remaining amount detection device is used as a device that applies only two types of perfusion bottles 301A and 301B.

  In the above description, the contact member 223 that contacts the sensor 220 is biased upward by the spring 222, but the contact member is disposed above the sensor 220 and biased downward by the spring or the like. It may be configured.

  In the above description, the sensor 220 is configured to use a sensor for detecting stress, but may be configured to use an optical sensor, a potentiometer, or the like. For example, the structure which detects the load added to the hook member 211 as a movement of a member is mentioned. In the case of optical detection, the movement of the hook member 211 biased by a spring or the like is detected by a photo interrupter. In the case of electrical detection, the movement of the hook member 211 biased by a spring or the like is detected by a potentiometer.

  In the above description, the perfusate container is suspended and held by the hook member 211. However, the perfusate container may be supported from below by the holding member or the like and its weight may be detected.

  In the above description, the sensor unit 210 and the main unit 230 are connected by the cable 290, but may be connected by wireless communication.

  In the above description, the sensor unit 210 and the main unit 230 are individually configured, but may be integrally configured. Moreover, you may incorporate in the perfusion suction apparatus 100. FIG.

  In the above description, the apparatus 200 notifies the operator of the remaining amount of the perfusate. However, the apparatus 100 and the apparatus 200 are communicably connected, and the remaining amount of the perfusate detected by the apparatus 200 is used. It is good also as a structure which the apparatus 100 controls based on (detection signal). For example, the apparatus 100 may stop the suction of the US handpiece 51 or the like based on a signal that the apparatus 200 detects that the remaining amount of the perfusate is 100 ml.

1 is a schematic external view of a perfusion suction device according to an embodiment of the present invention. It is a schematic block diagram which shows the control system of a perfusion suction apparatus. It is a figure explaining the sensor unit of the perfusate residual amount detection apparatus which is embodiment of this invention. It is a figure explaining the main body unit of the perfusate residual amount detection apparatus. It is a schematic block diagram which shows the control system of the perfusate residual amount detection apparatus. It is a figure which shows the example of a change of a perfusate container. It is a figure explaining the residual amount detection of a perfusate.

40 pole 41 support unit 100 perfusion suction device 200 perfusion liquid remaining amount detection device 210 sensor unit 220 sensor 230 body unit 270 calculation / control unit 290 cable 301A, 301B perfusion bottle 311A, 311B perfusion bag

Claims (6)

  1. The perfusate remaining amount detection device for detecting the remaining amount of the perfusate in the perfusate container for storing the perfusate supplied into the patient's eye is
    A holding member for holding the perfusate container;
    A sensor for detecting the weight of the perfusate container over time by detecting the movement or load of the holding member over time, and generating a detection signal;
    An arithmetic unit having a predetermined reference value corresponding to the remaining amount of the perfusate and comparing the reference value with a detection signal of the sensor;
    A notification unit for notifying the remaining amount of the perfusate based on the calculation result of the calculation unit;
    Having
    A perfusate remaining amount detection device characterized by that.
  2. The perfusate remaining amount detection device according to claim 1 further comprises:
    A display for displaying information on different types of perfusate containers;
    A storage unit storing setting values corresponding to the weights of different types of perfusate containers;
    Have
    The arithmetic unit determines the type of the perfusate container by comparing the detection signal of the sensor with the set value when the perfusate container is held by the holding unit, and based on the determination result, Display the type of information on the display unit,
    A perfusate remaining amount detection device characterized by that.
  3. In the perfusate residual amount detection apparatus of Claim 2,
    The reference value is determined corresponding to the total weight of each perfusate container when the remaining amount of the perfusate in different types of perfusate containers is a predetermined amount.
    A perfusate remaining amount detection device characterized by that.
  4. In the perfusate residual amount detection apparatus of Claim 2,
    The reference value is determined in accordance with a decrease amount of the perfusate weight from the set value.
    A perfusate remaining amount detection device characterized by that.
  5. In the perfusate remaining amount detection apparatus in any one of Claims 1-4,
    The holding member includes a hook member that suspends the perfusate container, a biasing member that biases the hook member upward, and a contact member that houses the hook member and the biasing member.
    The sensor is a stress sensor that detects a load of a corresponding contact member as a stress.
    A perfusate remaining amount detection device characterized by that.
  6.   A perfusion suction device comprising the perfusate remaining amount detection device according to claim 1.
JP2010084685A 2010-03-31 2010-03-31 Detector residual amount of perfusate, and perfusion suction apparatus with the same Pending JP2011212350A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013236785A (en) * 2012-05-16 2013-11-28 Osada Res Inst Ltd Odontotherapy apparatus
JP2014087608A (en) * 2012-10-01 2014-05-15 Nidek Co Ltd Ophthalmic surgical ultrasonic chip, ophthalmic surgical handpiece with ophthalmic surgical ultrasonic chip, and ophthalmic surgical ultrasonic apparatus with ophthalmic surgical ultrasonic chip
KR101413951B1 (en) * 2012-06-08 2014-08-06 충북대학교 산학협력단 Continuous flushing monitoring apparatus for intraarterial coaxial catheters during neurointerventional procedures

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06154234A (en) * 1992-11-20 1994-06-03 Olympus Optical Co Ltd Ultrasonic treatment suction apparatus
JPH0657330U (en) * 1993-01-25 1994-08-09 要 三浦 The remaining amount alarm of ophthalmic surgical perfusion cleaning solution
JPH11221276A (en) * 1998-02-09 1999-08-17 Koji Iritani Monitoring device of remaining volume of transfusion
JP2001353216A (en) * 2001-05-14 2001-12-25 Terumo Corp Peritoneum dialyzer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06154234A (en) * 1992-11-20 1994-06-03 Olympus Optical Co Ltd Ultrasonic treatment suction apparatus
JPH0657330U (en) * 1993-01-25 1994-08-09 要 三浦 The remaining amount alarm of ophthalmic surgical perfusion cleaning solution
JPH11221276A (en) * 1998-02-09 1999-08-17 Koji Iritani Monitoring device of remaining volume of transfusion
JP2001353216A (en) * 2001-05-14 2001-12-25 Terumo Corp Peritoneum dialyzer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013236785A (en) * 2012-05-16 2013-11-28 Osada Res Inst Ltd Odontotherapy apparatus
KR101413951B1 (en) * 2012-06-08 2014-08-06 충북대학교 산학협력단 Continuous flushing monitoring apparatus for intraarterial coaxial catheters during neurointerventional procedures
JP2014087608A (en) * 2012-10-01 2014-05-15 Nidek Co Ltd Ophthalmic surgical ultrasonic chip, ophthalmic surgical handpiece with ophthalmic surgical ultrasonic chip, and ophthalmic surgical ultrasonic apparatus with ophthalmic surgical ultrasonic chip

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