JP2017213250A - Liquid storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid storage device which allows downsizing of a storage part for storing the liquid sucked from a patient's eye and yet stable measuring of the liquid level in the storage part.SOLUTION: The liquid storage device includes: a storage part in which liquid is stored; a suction part which sucks the gas inside the storage part to reduce the pressure inside the storage part, so that liquid is drawn into the storage part; and a liquid level measurement part for measuring the liquid level of the liquid stored in the storage part. The storage part comprises: a liquid intake port through which liquid is taken in; a liquid receiving chamber into which liquid is taken through the liquid intake port; a liquid level measurement chamber in which the liquid level of the liquid is measured by the liquid level measurement part; a first partition for separating the liquid receiving chamber and the liquid level measurement chamber while allowing partial communication therebetween; and a liquid drain port for letting the liquid stored in the storage part drain. The liquid intake port is provided at a position which is above the liquid level of the liquid stored in the liquid receiving chamber.SELECTED DRAWING: Figure 4

Description

  The present disclosure relates to a liquid storage apparatus, for example, a liquid storage apparatus that stores waste liquid provided in an ophthalmic apparatus used for ophthalmic surgery.

  Patent Document 1 discloses an ultrasonic surgical apparatus that crushes and removes a lens nucleus that has become cloudy due to cataracts or the like by ultrasonic vibration. In this ultrasonic surgical apparatus, the waste liquid containing the removed lens nucleus and perfusate is stored in a waste liquid storage bag.

JP 2005-013425 A

  In an apparatus as disclosed in Patent Document 1, a small tank may be provided on the upstream side of a waste liquid storage bag to suck and temporarily store the waste liquid with a suction pump. In this case, it is necessary to properly discharge the waste liquid from the tank according to the liquid level of the waste liquid in the tank so that the waste liquid does not overflow into the suction pump and measure the liquid level of the waste liquid stably. It is desirable to do.

  Accordingly, the present disclosure has been made to solve the above-described problems, and a liquid storage device capable of stably measuring the liquid level in the storage unit while reducing the size of the storage unit of the liquid sucked from the patient's eye The purpose is to provide.

  A liquid storage device provided by an exemplary embodiment of the present disclosure includes a storage unit that stores a liquid sucked from a patient's eye, and sucks a gas in the storage unit to take the liquid into the storage unit. An intake section that lowers the pressure in the storage section, and a liquid level measurement section that measures the liquid level of the liquid stored in the storage section, the storage section is a liquid intake port for taking in the liquid, The liquid intake chamber into which the liquid is taken in from the liquid intake port, the liquid level measurement chamber for measuring the liquid level of the liquid by the liquid level measurement unit, the liquid intake chamber, and the liquid level measurement chamber are combined. A first partition that divides while communicating, and a drainage port for discharging the liquid stored in the storage unit, the liquid intake port being a liquid level of the liquid stored in the liquid intake chamber Than That is provided above a position, characterized.

  According to the liquid storage device of the present disclosure, it is possible to stably measure the liquid level in the storage part while downsizing the storage part of the liquid sucked from the patient's eye.

It is an external view of an ophthalmologic apparatus. It is a schematic block diagram of the ophthalmologic apparatus of FIG. It is a schematic block diagram explaining the control part of the ophthalmologic apparatus of FIG. It is sectional drawing of a tank.

  The ophthalmologic apparatus 1 provided with the liquid storage device of the present embodiment will be described. The ophthalmologic apparatus 1 is used for, for example, cataract vitreous surgery. In this embodiment, as will be described in detail later, in the waste liquid storage device 61 (liquid storage device), the waste liquid LQW is temporarily stored in the tank 42 while measuring the liquid level of the waste liquid LQW in the tank 42. First, the overall configuration of the ophthalmic apparatus 1 is described, and then the waste liquid storage device 61 is described.

  As shown in FIGS. 1 and 2, the ophthalmologic apparatus 1 of this embodiment includes a main body 11 and a cassette 12 as an example. The main body 11 includes a monitor 21 and a connection panel 22. As an example, the monitor 21 displays a setting screen for surgical conditions, a list of surgical results that are driving results of the surgical device, and the like. As an example, the connection panel 22 is provided with a plurality of connectors to which cables of the surgical handpiece 13 are connected.

  As an example, the main body 11 includes a holding unit 23 on the side surface on which a cassette 12 for cataract surgery or the like is mounted.

  The main body 11 includes a pole 24 and an arm 24a on the back surface. The pole 24 supports a perfusion bottle 26 containing a perfusion solution such as physiological saline. The arm 24 a suspends the perfusion bottle 26 above the pole 24. The pole 24 moves up and down when the drive mechanism 27 (see FIG. 3) is driven by the control unit 14 (see FIG. 3).

  The main body 11 includes an interface unit on the back surface. For example, the interface unit may be connected to an external device (PC) via a LAN, a USB storage device or the like in order to externally transfer a surgical result or the like as electronic data.

  The main body 11 includes a foot switch 28. The foot switch 28 may be used to adjust various operations such as ultrasonic vibration and suction operation of the movable tip provided at the distal end portion of the surgical handpiece 13.

  The main body 11 includes a control unit 14 (see FIG. 3) inside. As an example, the control unit 14 is used for controlling various operations of the ophthalmologic apparatus 1.

  As shown in FIG. 3, the control unit 14 includes, for example, a surgical handpiece 13, a monitor 21, a connection panel 22, a drive mechanism 27, a foot switch 28, an intake unit 29, a waste liquid suction unit 31, a storage unit 32, and an interface unit. And various valve parts are connected. For example, a rewritable flash memory may be used as the storage unit 32. The storage unit 32 may store a program for performing surgery and various types of surgical information acquired by the surgical operation of the main body 11.

  For example, the control unit 14 reads the perfusion suction program stored in the storage unit 32. For example, the control unit 14 functions as a processor that controls driving of the intake unit 29, driving of the waste liquid suction unit 31, and driving of various valves. Note that a CPU (microprocessor), DSP (digital signal processor), PLD (programmable logic device), or the like may be used as the processor.

<Surgery handpiece>
The ophthalmologic apparatus 1 of this embodiment includes a surgical handpiece 13. The ophthalmologic apparatus 1 uses a US handpiece (ultrasonic handpiece) as an example of the surgical handpiece 13. The US handpiece, for example, emulsifies and removes the lens nucleus that has become opaque and hardened due to cataract by ultrasonic vibration of a crushing tip provided at the tip. In order to perform ultrasonic vibration of the crushing tip, power may be supplied to the ultrasonic vibrator provided in the surgical handpiece 13 via the power cable 33. The surgical handpiece 13 is not limited to the US handpiece. As the surgical handpiece 13, for example, an I / A handpiece 16 (perfusion suction handpiece) may be used. In addition to the power cable 33, a perfusion tube 34 and a suction tube 36 are connected to the surgical handpiece 13 of the present embodiment. The perfusion tube 34 is used, for example, to flow a perfusate into the patient's eye E. The suction tube 36 is used, for example, to suck out the waste liquid LQW (liquid) containing the perfusate from the patient's eye E.

<Supply section>
The ophthalmologic apparatus 1 of this embodiment has a supply part. The supply unit supplies, for example, a perfusate to the patient's eye E. As an example, the supply unit includes a drive mechanism 27, a pole 24, a perfusion bottle 26, a perfusion tube 37, a perfusion tube 34, a perfusion valve unit 38, and a surgical handpiece 13. The supply unit has a perfusion channel 39 through which the perfusate flows. The perfusion channel 39 includes a perfusion tube 34 and a perfusion tube 37. As described above, the perfusion bottle 26 filled with the perfusate is suspended from the pole 24 of the ophthalmic apparatus 1 of the present embodiment. The pole 24 is moved up and down when the control unit 14 drives the drive mechanism 27. As the pole 24 moves up and down, the supply pressure of the perfusate flowing from the perfusion bottle 26 is adjusted. The perfusate from the perfusion bottle 26 passes through the perfusion tube 37 and the perfusion tube 34 and is irrigated to the patient's eye E through the surgical handpiece 13 held by the operator. In the middle of the perfusion channel 39, the outflow control of the perfusate flowing through the perfusion channel 39 is performed.

<Suction part>
The ophthalmologic apparatus 1 according to the present embodiment includes a suction unit. For example, the suction unit sucks the waste liquid LQW containing the perfusate from the patient's eye E using the intake unit 29. As an example, the suction part includes the surgical handpiece 13, the suction tube 36, the waste liquid path 41, the tank 42 (storage part), the intake path 43, the intake part 29, the waste liquid path 44, the waste liquid suction part 31, and the waste liquid bag 12b. I have.

  The waste liquid path 41 is a flow path through which the waste liquid LQW including the perfusate sucked from the patient's eye E flows. The waste liquid path 41 is connected to the suction tube 36 and the tank 42.

  In the present embodiment, the waste liquid path 41 includes a storage valve portion 47. The control unit 14 controls the opening and closing of the storage valve unit 47, so that the waste liquid passage 41 can be closed at the storage valve unit 47. The control unit 14 may control the discharge valve unit 48 to adjust the flow rate of the waste liquid LQW flowing through the waste liquid path 41. In the tank 42, the waste liquid LQW sucked from the patient's eye E is temporarily stored. The waste liquid path 41 and the intake path 43 are connected to the tank 42 above the liquid level of the stored waste liquid LQW.

  The intake passage 43 is connected to the tank 42 and the intake portion 29. For example, the intake unit 29 generates a suction force for transferring the gas in the tank 42 to the outside of the tank 42. For example, the control unit 14 can adjust the intake force of the intake unit 29. In the present embodiment, a venturi pump is used as an example of the intake portion 29. The intake unit 29 may be, for example, a vacuum pump (vacuum generator). The suction part 29 moves the gas in the tank 42 to the outside of the tank 42, whereby the pressure of the gas in the tank 42 is lowered.

  The waste liquid path 44 is connected to the tank 42 and the waste liquid bag 12b. The waste liquid path 44 of the present embodiment is connected to the tank 42 below the liquid level of the stored waste liquid LQW. The waste liquid passage 44 includes a discharge valve portion 48. The controller 14 controls the opening and closing of the discharge valve section 48, so that the waste liquid path 44 can be closed at the position of the discharge valve section 48. In the present embodiment, at least a part of the waste liquid path 44 is formed of an elastic member. The waste liquid suction part 31 of this embodiment is disposed on the side of the waste liquid path 44. By squeezing the elastic member described above with the squeezing member of the waste liquid suction part 31, a suction force for sucking the waste liquid LQW is generated. In the present embodiment, the waste liquid LQW stored in the tank 42 is transferred to the waste liquid bag 12b using the suction force of the waste liquid suction unit 31. In the present embodiment, a peristaltic pump is used as an example of the waste liquid suction unit 31. For example, a scroll pump, a vane pump, or a diaphragm pump may be used as the waste liquid suction unit 31. The waste liquid LQW sucked by the waste liquid suction unit 31 is stored in the waste liquid bag 12b. In the present embodiment, the waste liquid path 44 is connected above the liquid level of the waste liquid LQW stored in the waste liquid bag 12b.

<Suction mode>
Next, a suction mode using the above-described supply unit and suction unit will be described. In the suction mode of the present embodiment, under the control of the control unit 14, the perfusion valve unit 38, the storage valve unit 47, and the discharge valve unit 48 are opened, and the vent valve unit 49 is closed.

  When the intake unit 29 is driven by the control of the control unit 14, the intake unit 29 takes in the gas in the tank 42 through the intake passage 43. As a result, the pressure of the gas in the tank 42 decreases, so that the waste liquid LQW is sucked into the tank 42 from the patient eye E via the waste liquid path 41 and stored. The control unit 14 drives the waste liquid suction unit 31 so that the storage amount of the waste liquid LQW in the tank 42 is constant. Thereby, a part of the waste liquid LQW stored in the tank 42 is transferred to the waste liquid bag 12b. The liquid level of the waste liquid LQW stored in the tank 42 is measured by the liquid level measuring unit 71 of the waste liquid storage apparatus 61 described later.

<Vent channel>
The ophthalmologic apparatus 1 of this embodiment includes a vent channel 51. The vent channel 51 is connected to the irrigation channel 39 and the waste liquid channel 41. By causing the perfusate to flow through the vent channel 51, excessive suction from the patient's eye E is suppressed. The vent channel 51 has a vent valve portion 49. The controller 14 can control the flow rate of the perfusate flowing through the vent channel 51 by controlling the opening and closing of the vent valve unit 49.

<Cassette>
The cassette 12 of this embodiment has a cassette body 12a and a waste liquid bag 12b. A perfusion tube 34, a perfusion tube 37, and a suction tube 36 are connected to the cassette body 12a of the present embodiment. The cassette body 12a of the present embodiment includes, for example, a waste liquid path 41, a waste liquid path 44, and an intake path 43. The waste liquid bag 12b is disposed outside the casing of the cassette body 12a.

<Liquid storage device>
Next, the waste liquid storage device 61 (liquid storage device) will be described. As shown in FIG. 2, the waste liquid storage device 61 includes a tank 42, an intake passage 43, an intake portion 29, a liquid level measuring portion 71, and the like.

  The tank 42 is a storage unit that temporarily stores the waste liquid LQW sucked from the patient's eye E. As shown in FIG. 2, the tank 42 is provided on the upstream side of the waste liquid bag 12 b and includes a waste liquid intake port 81 (liquid intake port), an exhaust port 82, and a drainage port 83.

  The waste liquid intake port 81 is connected to the waste liquid path 41 and is a part that takes in the waste liquid LQW from the waste liquid path 41 into the tank 42 (specifically, in a waste liquid intake chamber 84 to be described later). The exhaust port 82 is connected to the intake passage 43 and is a portion that exhausts air in the tank 42 (in detail, an air exhaust chamber 86 described later in detail). The drainage port 83 is connected to the waste liquid path 44 and is a part for discharging the waste liquid LQW stored in the tank 42.

  The liquid level measurement unit 71 is a part that measures the liquid level (storage amount) of the waste liquid LQW stored in the tank 42. The liquid level measurement unit 71 of the present embodiment is configured to supply the liquid LQW in the tank 42 (in detail in a liquid level measurement chamber 85 described later in detail) via a transparent window 42a (see FIG. 4) provided in the tank 42. Measure the position. In addition, the measurement result in the liquid level measurement part 71 is sent to the control part 14 (refer FIG. 3). Moreover, the liquid level measurement part 71 is comprised by the light emission part and the light-receiving part (for example, linear image sensor), for example.

  In such a waste liquid storage device 61, the air in the tank 42 is discharged from the exhaust port 82 through the intake passage 43 by the suction by the intake portion 29, and the pressure in the tank 42 is reduced. Thus, the waste liquid LQW from the patient's eye E is sucked into the tank 42 from the waste liquid intake port 81 through the suction tube 36 and the waste liquid path 41 and stored. In parallel with this, based on the measurement result of the liquid level of the waste liquid LQW by the liquid level measurement unit 71, the suction flow rate of the waste liquid suction part 31 is adjusted so that the liquid level of the waste liquid LQW becomes constant, and the waste liquid LQW Is discharged from the drainage port 83 to the waste liquid path 44. In this way, the tank 42 for temporarily storing the waste liquid LQW sucked from the patient's eye E by the suction by the suction part 29 is provided on the upstream side of the waste liquid bag 12b. Thereby, the responsiveness of sucking the waste liquid LQW from the patient's eye E can be improved.

  Here, in order to further improve the responsiveness of sucking the waste liquid LQW from the patient's eye E by lowering the pressure in the tank 42 by suction by the suction part 29, it is effective to make the volume of the tank 42 as small as possible. one of. When the tank 42 is reduced in size by reducing the volume of the tank 42 in this manner, the waste liquid LQW is discharged before the waste liquid LQW overflows from the tank 42 so that the waste liquid LQW does not overflow from the tank 42 and is sucked into the intake portion 29. It is necessary to appropriately discharge the LQW from the drainage port 83. Therefore, it is desirable to stably measure the liquid level of the waste liquid LQW stored in the tank 42. However, the influence of the waste liquid LQW and bubbles taken into the tank 42, that is, the liquid level of the waste liquid LQW stored in the tank 42 due to the waste liquid LQW being taken into the tank 42, the tank 42 together with the waste liquid LQW There is a possibility that the liquid level of the waste liquid LQW stored in the tank 42 cannot be stably measured due to the influence that bubbles taken in the liquid accumulate in the vicinity of the liquid level of the waste liquid LQW stored in the tank 42. In particular, the smaller the tank 42 is, the more easily the liquid level of the waste liquid LQW is affected by the waste liquid LQW and bubbles introduced into the tank 42.

  Therefore, in the present embodiment, the inside of the tank 42 is divided into three rooms by partitions. Specifically, as shown in FIG. 4, the tank 42 includes a waste liquid intake chamber 84 (liquid intake chamber), a liquid level measuring chamber 85, an air discharge chamber 86 (gas discharge chamber), and a partition 87 (first chamber). Partition) and a partition 88 (second partition).

  The waste liquid intake chamber 84 is connected to the waste liquid intake port 81 and is a room into which the waste liquid LQW is taken from the waste liquid intake port 81. In the present embodiment, the waste liquid intake port 81 is provided at a position above the liquid level of the waste liquid LQW stored in the waste liquid intake chamber 84.

  The liquid level measuring chamber 85 is a room for measuring the liquid level of the waste liquid LQW by the liquid level measuring unit 71 (see FIG. 2). In the example shown in FIG. 4, a drainage port 83 is provided in the liquid level measurement chamber 85 as an example.

  The air discharge chamber 86 is connected to the intake portion 29 (see FIG. 2) via the intake passage 43, and is a chamber that discharges air from the tank 42 to the intake passage 43. An exhaust port 82 is provided above the air discharge chamber 86.

  The partition 87 separates the waste liquid intake chamber 84 and the liquid level measurement chamber 85. The partition 88 divides the liquid level measurement chamber 85 and the air discharge chamber 86.

  Thus, in the present embodiment, the tank 42 has the liquid level measurement chamber 85 separated from the waste liquid intake chamber 84. As a result, the waste liquid LQW stored in the liquid level measurement chamber 85 is less likely to be affected by the waste liquid LQW and the bubbles taken into the waste liquid intake chamber 84. That is, since the waste liquid intake chamber 84 and the liquid level measurement chamber 85 are separated by the partition 87, the liquid level of the waste liquid LQW stored in the waste liquid intake chamber 84 is reduced by the waste liquid LQW being taken into the waste liquid intake chamber 84. Even if the wave is undulated, the fluctuation of the liquid level is blocked by the partition 87, so that it is difficult to be transmitted to the liquid level measuring chamber 85, and the air bubbles taken together with the waste liquid LQW in the waste liquid taking-in chamber 84 are blocked by the partition 87, Difficult to move into measurement chamber 85. Therefore, since the liquid level of the waste liquid LQW stored in the liquid level measurement chamber 85 is stabilized, the liquid level measurement unit 71 can stably measure the liquid level of the waste liquid LQW.

  The tank 42 has a liquid level measurement chamber 85 separated from an air discharge chamber 86. As a result, the waste liquid LQW stored in the liquid level measurement chamber 85 is hardly affected by the air discharged from the air discharge chamber 86. That is, since the liquid level measurement chamber 85 and the air discharge chamber 86 are separated by the partition 88, the flow of air in the air discharge chamber 86 caused by the discharge of air from the air discharge chamber 86 (described later). Since it is blocked by the partition 88 (except for the upper communication portion 93), it is difficult to be transmitted directly from the air discharge chamber 86 to the liquid level measurement chamber 85. Therefore, since the liquid level of the waste liquid LQW stored in the liquid level measurement chamber 85 is stabilized, stable liquid level measurement by the liquid level measurement unit 71 becomes possible.

  As described above, in this embodiment, the inside of the tank 42 is divided into the three chambers including the waste liquid intake chamber 84, the liquid level measuring chamber 85, and the air discharge chamber 86 by the partition 87 and the partition 88. 84, the liquid level measurement chamber 85, and the air discharge chamber 86 are partially communicated with each other. That is, the waste liquid intake chamber 84, the liquid level measurement chamber 85, and the air discharge chamber 86 are three semi-independent rooms that are not completely independent and are connected at the upper and lower portions of the tank 42. A passage for air that moves between the chambers is formed above the tank 42, and a passage for the waste liquid LQW that moves between the chambers is formed below the tank 42.

  Specifically, as an air passage formed above the tank 42, the partition 87 includes an upper communication portion 91 (first upper communication portion), and the partition 88 includes an upper communication portion 93 (second upper communication portion). ).

  The upper communication portion 91 is formed at a position above the liquid level of the waste liquid LQW stored in the waste liquid intake chamber 84, and communicates the waste liquid intake chamber 84 and the liquid level measurement chamber 85. As described above, the waste liquid intake chamber 84 and the liquid level measurement chamber 85 are partially communicated with each other via the upper communication portion 91, and the air in the waste liquid intake chamber 84 is transferred into the liquid level measurement chamber 85 via the upper communication portion 91. Can be shed. In the example shown in FIG. 4, the upper communication portion 91 is formed at the uppermost position of the waste liquid intake chamber 84.

  The upper communication part 93 is formed at a position above the liquid level of the waste liquid LQW stored in the liquid level measurement chamber 85, and allows the liquid level measurement chamber 85 and the air discharge chamber 86 to communicate with each other. As described above, the liquid level measurement chamber 85 and the air discharge chamber 86 are partially communicated with each other via the upper communication portion 93, and the air in the liquid level measurement chamber 85 is transferred into the air discharge chamber 86 via the upper communication portion 93. Can be shed. In the example shown in FIG. 4, the upper communication portion 93 is formed at the uppermost position of the liquid level measurement chamber 85.

  As described above, air passages that move between the respective chambers are formed above the tank 42, so that the pressure in the tank 42 is reduced by suction by the intake portion 29, and the waste liquid LQW is discharged from the patient's eye E. The tank 42 can be sucked and stored.

  Further, as a passage for the waste liquid LQW formed below the tank 42, the partition 87 includes a lower communication portion 92 (first lower communication portion), and the partition 88 includes a lower communication portion 94 (second lower communication portion). I have.

  The lower communication portion 92 is formed at a position below the liquid level of the waste liquid LQW stored in the waste liquid intake chamber 84, and allows the waste liquid intake chamber 84 and the liquid level measurement chamber 85 to communicate with each other. As described above, the waste liquid intake chamber 84 and the liquid level measurement chamber 85 are partially communicated with each other via the lower communication portion 92, and the waste liquid LQW in the waste liquid intake chamber 84 is transferred to the liquid level measurement chamber 85 via the lower communication portion 92. Can flow inside. In the example shown in FIG. 4, the lower communication portion 92 is formed at the lowest position of the waste liquid intake chamber 84.

  The lower communication portion 94 is formed at a position below the liquid level of the waste liquid LQW stored in the liquid level measurement chamber 85, and allows the liquid level measurement chamber 85 and the air discharge chamber 86 to communicate with each other. As described above, the liquid level measurement chamber 85 and the air discharge chamber 86 are partially communicated with each other via the lower communication portion 94, and the liquid level measurement chamber 85 and the air discharge chamber 86 are connected via the lower communication portion 94. The waste liquid LQW can be moved. The waste liquid LQW that has entered the air discharge chamber 86 from the upper communication portion 93 can also be moved into the liquid level measurement chamber 85 via the lower communication portion 94. In the example shown in FIG. 4, the lower communication portion 94 is formed at the lowest position of the liquid level measurement chamber 85.

  As described above, since the passage of the waste liquid LQW is formed below the tank 42, the waste liquid LQW sucked from the patient's eye E flows from the waste liquid intake chamber 84 to the liquid level measurement chamber 85 and the air discharge chamber 86. Thus, the liquid can be discharged from the drainage port 83.

  As described above, in this embodiment, the waste liquid intake chamber 84, the liquid level measurement chamber 85, and the air discharge chamber 86 are partially in communication with each other. The function of temporarily storing the waste liquid LQW sucked from the tank 42 in the tank 42 is ensured.

  In the present embodiment, the waste liquid intake port 81 is provided at a position above the liquid level of the waste liquid LQW stored in the waste liquid intake chamber 84. As a result, the bubbles taken together with the waste liquid LQW from the waste liquid intake port 81 are easily separated from the waste liquid LQW before being mixed with the waste liquid LQW stored in the waste liquid intake chamber 84. Therefore, the waste liquid stored in the waste liquid intake chamber 84 It becomes difficult to mix with LQW. Therefore, it is difficult for air bubbles to be mixed into the waste liquid LQW stored in the liquid level measurement chamber 85 that communicates with the waste liquid intake chamber 84 via the lower communication portion 92. Therefore, since the liquid level of the waste liquid LQW stored in the liquid level measurement chamber 85 is stabilized, the liquid level measurement unit 71 can stably measure the liquid level of the waste liquid LQW.

  Further, the waste liquid inlet 81 is formed to be inclined with respect to the axis of the cylindrical tank 42 so that the axis S of the waste liquid inlet 81 is directed to the inner wall surface 84 a of the liquid intake chamber 84. Thereby, since the waste liquid LQW taken from the liquid intake port 81 can be guided and flowed to the inner wall surface 84a of the waste liquid intake chamber 84, the bubbles contained in the waste liquid LQW are separated from the waste liquid LQW, and only the waste liquid LQW is obtained. It becomes easy to store in the tank 42. In this way, in the tank 42, a waste liquid guide structure (liquid guide structure) is formed in which the waste liquid LQW taken from the waste liquid intake port 81 is guided to flow to the inner wall surface 84a of the waste liquid intake chamber 84.

  Further, in the present embodiment, the upper communication portion 91 and the upper communication portion 93 are formed at positions where they do not overlap or only partially overlap when viewed from the direction in which the partition 87 and the partition 88 are arranged. . For example, in the example shown in FIG. 4, the upper communication portion 91 is formed at a position on the depth side of the drawing, and the upper communication portion 93 is formed at a position on the front side of the drawing, and the upper communication portion 91 and the upper communication portion are formed. 93 is formed in the position which does not overlap, when it sees from the direction where the partition 87 and the partition 88 are arranged. This makes it difficult for the waste liquid LQW taken into the waste liquid intake chamber 84 from the waste liquid intake port 81 to enter the air discharge chamber 86 via the upper communication portion 91 and the upper communication portion 93. Therefore, it becomes difficult for the waste liquid LQW to be sucked into the intake portion 29 connected to the air discharge chamber 86.

  As described above, according to the present embodiment, the tank 42 includes the waste liquid intake chamber 84, the liquid level measurement chamber 85, and the partition 87 that separates the waste liquid intake chamber 84 and the liquid level measurement chamber 85 while partially communicating with each other. ing. The waste liquid intake port 81 is provided at a position above the liquid level of the waste liquid LQW stored in the waste liquid intake chamber 84.

  As a result, the waste liquid LQW stored in the liquid level measurement chamber 85 is hardly affected by the waste liquid LQW taken into the waste liquid intake chamber 84. Further, the bubbles taken together with the waste liquid LQW from the waste liquid intake port 81 are less likely to be mixed with the waste liquid LQW stored in the liquid level measurement chamber 85. Therefore, the liquid level of the waste liquid LQW stored in the liquid level measurement chamber 85 is stabilized. Therefore, the liquid level of the waste liquid LQW in the tank 42 can be stably measured while reducing the size of the tank 42. Therefore, the suction flow rate of the waste liquid suction unit 31 is adjusted so that the liquid level of the waste liquid LQW becomes constant based on the measurement result of the liquid level of the waste liquid LQW, and the waste liquid LQW is discharged from the drain port 83 to the waste liquid path 44. Can do. From the above, the tank 42 can be made as small as possible, and the responsiveness of sucking the waste liquid LQW from the patient's eye E by suction by the suction part 29 can be improved.

  Further, according to the present embodiment, the tank 42 includes the air discharge chamber 86 and the partition 88 that divides the liquid level measurement chamber 85 and the air discharge chamber 86 while partially communicating with each other. As a result, the waste liquid LQW stored in the liquid level measurement chamber 85 is hardly affected by the air discharged from the air discharge chamber 86. Therefore, the liquid level of the waste liquid LQW stored in the liquid level measurement chamber 85 is stabilized. Therefore, the liquid level of the waste liquid LQW in the tank 42 can be stably measured while reducing the size of the tank 42.

  Further, according to the present embodiment, the partition 87 includes the upper communication portion 91, and the partition 88 includes the upper communication portion 93. Thereby, the air in the waste liquid intake chamber 84 can be discharged from the air discharge chamber 86 through the upper communication portion 91 and the upper communication portion 93. Further, the air in the liquid level measurement chamber 85 can be discharged from the air discharge chamber 86 via the upper communication portion 93. Therefore, the waste liquid LQW can be taken into the tank 42 by sucking the air in the tank 42 by the intake portion 29 and lowering the pressure in the tank 42.

  Further, according to the present embodiment, the upper communication portion 91 and the upper communication portion 93 are formed at positions where they do not overlap or only partially overlap when viewed from the direction in which the partition 87 and the partition 88 are arranged. ing. This makes it difficult for the waste liquid LQW taken into the waste liquid intake chamber 84 to enter the air discharge chamber 86 via the upper communication portion 91 and the upper communication portion 93. Therefore, it becomes difficult for the waste liquid LQW to be sucked into the intake portion 29 connected to the air discharge chamber 86.

  Further, according to the present embodiment, the liquid intake port 81 is formed to be inclined such that the axis S of the liquid intake port 81 is directed to the inner wall surface 84 a of the liquid intake chamber 84. Thereby, since the waste liquid LQW can be guided and flowed to the inner wall surface 84a of the waste liquid intake chamber 84, the bubbles contained in the waste liquid LQW are separated from the waste liquid LQW, and only the waste liquid LQW is easily stored in the tank 42. . Note that the aspect of the liquid intake port 81 disclosed in the present embodiment is merely an example, and the axis S of the liquid intake port 81 may not be inclined, and guides the waste liquid LQW to the inner wall surface 84a of the waste liquid intake chamber 84. For example, it may be horizontal.

  Further, according to the present embodiment, the partition 87 includes the lower communication portion 92. As a result, the waste liquid LQW taken into the waste liquid taking-in chamber 84 can flow into the liquid level measuring chamber 85 via the lower communication portion 92.

  As a modification, the tank 42 may not have the partition 88, and the liquid level measurement chamber 85 and the air discharge chamber 86 may be integrally formed as one room.

  The drainage port 83 may be provided in any of the three rooms in the tank 42, and may be provided in the waste liquid intake chamber 84 or the air discharge chamber 86. The tank 42 is a modified example of the waste liquid guide structure that guides and flows the waste liquid LQW taken from the waste liquid intake port 81 to the inner wall surface 84 a of the waste liquid intake chamber 84, and the inner wall surfaces of the waste liquid intake port 81 and the waste liquid intake chamber 84. You may have the connection part which connects 84a.

  In the above description, the ophthalmologic apparatus 1 has been described as being used for, for example, cataract surgery, but the ophthalmologic apparatus 1 can also be used for vitreous surgery.

  It should be noted that the above-described embodiment is merely an example, and does not limit the present disclosure in any way, and various improvements and modifications can be made without departing from the scope of the present invention.

  For example, the tank 42 may include a waste liquid discharge chamber (liquid discharge chamber for discharging liquid) for discharging the waste liquid LQW in addition to the waste liquid intake chamber 84, the liquid level measurement chamber 85, and the air discharge chamber 86. Good. At this time, the drainage port 83 is provided in the waste liquid discharge chamber. Further, the tank 42 includes a third partition that divides the liquid level measurement chamber 85 and the waste liquid discharge chamber while partially communicating with each other. Note that the third partition is a lower communication portion (not shown) that connects the liquid level measurement chamber 85 and the waste liquid discharge chamber at least at a position below the liquid level of the waste liquid LQW stored in the liquid level measurement chamber 85. A third lower communication portion). Thereby, the waste liquid LQW in the liquid level measurement chamber 85 can be flowed into the waste liquid discharge chamber via the lower communication portion.

DESCRIPTION OF SYMBOLS 1 Ophthalmology apparatus 11 Main body 12 Cassette 12a Cassette main body 12b Waste liquid bag 29 Intake part 42 Tank 42a Window 43 Intake path 61 Waste liquid storage apparatus 71 Liquid level measurement part 81 Waste liquid intake 82 Exhaust outlet 83 Drain outlet 84 Waste liquid intake chamber 84a Inner wall surface 85 Liquid level measurement chamber 86 Air discharge chamber 87 Partition 88 Partition 91 Upper communication portion 92 Lower communication portion 93 Upper communication portion LQW Waste liquid

Claims (6)

A reservoir for storing liquid aspirated from the patient's eye;
An intake part that sucks in the gas in the storage part to reduce the pressure in the storage part in order to take the liquid into the storage part;
A liquid level measurement unit that measures the liquid level of the liquid stored in the storage unit,
The storage unit includes a liquid intake port for taking in the liquid, a liquid intake chamber into which the liquid is taken in from the liquid intake port, and a liquid level measurement chamber for measuring the liquid level of the liquid by the liquid level measurement unit. A first partition that divides the liquid intake chamber and the liquid level measurement chamber while partly communicating with each other, and a drainage port for discharging the liquid stored in the storage section,
The liquid intake port is provided at a position above the liquid level of the liquid stored in the liquid intake chamber;
A liquid storage device. The liquid storage device according to claim 1.
The storage section includes a gas discharge chamber connected to the intake section for discharging the gas, and a second partition that divides the liquid level measurement chamber and the gas discharge chamber while partially communicating with each other. ,
A liquid storage device. The liquid storage device of claim 2,
The first partition includes a first upper communication portion that communicates the liquid intake chamber and the liquid level measurement chamber at a position above the liquid level of the liquid stored in the liquid intake chamber. ,
The second partition includes a second upper communication portion that communicates the liquid level measurement chamber and the gas discharge chamber at a position above the liquid level of the liquid stored in the liquid level measurement chamber. To have,
A liquid storage device. The liquid storage device according to claim 3.
The first upper communication portion and the second upper communication portion are positions that do not overlap or only partially overlap when viewed from the direction in which the first partition and the second partition are arranged. Formed in the
A liquid storage device. The liquid storage device according to any one of claims 1 to 4,
A liquid guide structure is formed in the storage part to guide and flow the liquid taken from the liquid intake to the inner wall surface of the liquid intake chamber,
A liquid storage device. The liquid storage device according to any one of claims 1 to 5,
The first partition includes a lower communication portion that communicates the liquid intake chamber and the liquid level measurement chamber at a position below the liquid level of the liquid stored in the liquid intake chamber. ,
A liquid storage device.

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