Surgical irrigation cassette

Abstract

To provide a surgical irrigation cassette.SOLUTION: A surgical irrigation cassette 24 comprises a cassette housing, a portion of a pump 28, and fluid pathways. The housing defines a chamber and a first console connector 38 including a first pneumatic connector port. A portion of the pump includes an intake side of the pump and an output side of the pump. The fluid pathways are disposed at least in part within the chamber. A first fluid pathway 27, in an installed position, connects the intake side of the pump with a supply fluid container. A second fluid pathway 32, in an installed position, interconnects the output side of the pump and a handpiece. A third fluid pathway 33, in an installed position, interconnects a handpiece 30 and a waste container 31. A fourth fluid pathway 37, in an installed position, interconnects the first console connector and the waste container.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] This relates to a surgical irrigation cassette.

[0002] [Related Applications] This application is a continuation of U.S. Provisional Patent Application No. 62 / 749,320, filed October 23, 2018. No. 62 / 735,850, filed September 24, 2018. All rights of priority and benefit of the foregoing are claimed, the contents of which are incorporated by reference. are hereby incorporated in their entirety. [Background technology]

[0003] A surgical fluid management system that may be incorporated into a surgical cutting system includes an associated vacuum pump. and fluid communication from the fluid source to the surgical site and the surgical site without contaminating the fluid supply pump or the fluid delivery pump. Fluid communication from the site to a waste canister may be provided. Summary of the Invention [Problem to be solved by the invention]

[0004] Use of a first type of cassette for connecting a surgical cutting tool to a sterile fluid source and for connecting the surgical tool to a The use of a second type of disposable cassette in connection with a fluid vacuum is also known. The disclosed disposable cassettes facilitate the connection of surgical tools to each of the vacuum and fluid sources. This cassette is a disposable cassette that is discarded after one use. good. [Means for solving the problem]

[0005] The surgical irrigation cassette comprises a cassette housing, an infusion portion of a pump, and a plurality of fluid paths. The housing is substantially rigid and includes a chamber and a first pneumatic connector. The infusion portion of the pump defines a first console connector having a port. The plurality of fluid paths are provided in the chamber, and include a suction side of the pump and a discharge side of the pump. The first fluid is also partially disposed and includes first, second, third, and fourth fluid paths. The passage has a first end connected to the suction side of the pump and a second end connected to a supply fluid container. The second fluid path has a first end connected to the discharge side of the pump and a handpiece. The third fluid path has a first end connected to the handpiece. The fourth fluid path has a first end connected to the first container and a second end connected to a waste container. a first end connected to the sole connector and a second end connected to a waste container; .

[0006] The cassette may include a second console connector.

[0007] The surgical irrigation cassette may include a fifth fluid path. The fifth fluid path may include a third fluid path. a first end connected to the fluid path of the housing and a second end connected to the second console of the housing; It may have an edge.

[0008] The fluid management system includes a console, a vacuum source, a first pressure sensor, and a second pressure sensor. The console defines a cassette opening and includes two pneumatic controllers. The cassette has a sole port in the opening. The vacuum source is connected to the console or A first pneumatic console port is mounted within the console and communicates with a first pneumatic console port. A pressure sensor is integrated into the console and communicates with a second of the pneumatic console ports. The second pressure sensor is integrated into the console and is connected to the first pneumatic console port. The cassette is selectively slidably disposed within the cassette opening. The cassette includes a housing, an infusion portion of the pump, and a plurality of fluid paths. The housing is substantially rigid and defines a chamber therein. The pump includes a suction side and a discharge side of the pump. a first fluid path, a second fluid path, a third fluid path, a fourth fluid path, and a fifth fluid path. Each fluid path is at least partially disposed within the chamber. The passage has a first end connected to the suction side and a second end connected to the supply fluid container. The second fluid path has a first end connected to the discharge side and a second end connected to the handpiece. The third fluid path has a first end connected to the handpiece and a waste container. The fourth fluid path has a first end connected to the first console of the housing. The device has a first end connected to a cable connector and a second end connected to a waste container. The console connector 1 is connected to the pneumatic console when the cassette is installed in the cassette opening. a first pneumatic connector port pneumatically connected to a first of the pneumatic connector ports. The fluid path has a first end connected to a third fluid path and a second console port of the housing. The second console connector has a second end connected to the second console connector. A first pneumatically connected console port when installed in the console port. It has two pneumatic connector ports.

[0009] The cassette housing has first substantially parallel walls connected by a peripheral third wall. The wall may include a first wall and a second wall.

[0010] The cassette housing has a substantially C-shaped side defining a first arm and a second arm. a first console connector fixed to the first arm; A second console connector having a second pneumatic connector port is connected to the first arm and the second arm. The arm may be fixed to one of the arms.

[0011] The second console connector may be secured to the second arm.

[0012] Each of the pneumatic connector ports is provided with an associated opening for receiving a port tube. The console connectors may each be configured to sealingly engage a port tube. The device may further include a seal for sealing the device.

[0013] The console connectors each pneumatically and sealingly engage pneumatic port tubing of the console. The device may be provided with a seal for the purpose.

[0014] Each console connector must be connected to a power outlet. A two-way valve may be provided which sometimes has a closed state.

[0015] The two-way valve may be made of a polymer material. and may have a slit therethrough.

[0016] The two-way valve and seal may be integrally formed from a polymeric material.

[0017] The housing has an upper portion of one of the plurality of passages for receiving a passage restrictor means (passage restrictor). The device may include a window disposed in the

[0018] The housing is provided above the third fluid path to receive a path restrictor means (path restrictor valve). The device may have a window disposed therein.

[0019] The cassette is a liquid stop valve with a reservoir and a normally open one-way valve. The reservoir may further include a third fluid path within the housing. The normally open one-way valve may be disposed between the third fluid path and the fifth fluid path. It may be disposed between the reservoir.

[0020] The cassette, more particularly the liquid stop connector, is disposed in the third fluid path. The reservoir may further include a pipe that forms part of the fluid path of the fifth reservoir. and a one-way valve is disposed between the pipe and the reservoir. It may be done.

[0021] The one-way valve may comprise a ball check valve. In the installed position, gravity biases the valve to the open position, and the liquid from the third fluid path and an increase in the fluid pressure of the third fluid path relative to the fluid pressure of the fifth fluid path. The door may be configured to be pushed upward to a closed position.

[0022] The reservoir has a sloped floor above the ball check valve that tapers toward the ball check valve. The inclined bed may direct the flow from the reservoir to the ball in the installed orientation. Direct the flow past the ball check valve in the open position into the third fluid path (return) ) may define a liquid flow path.

[0023] The reservoir is positioned horizontally between the ball check valve and the connection to the fifth fluid path. The cooling fan may also include a baffle wall.

[0024] The baffle wall has a lower end defining a liquid return gap between the baffle wall and the floor, and a bottom end defining a reservoir cover. and an upper end that engages the bar.

[0025] The cassette includes a housing connected to a second end of the second fluid path and a first end of the third fluid path. The fluid path may further include a handpiece connector, the handpiece connector being and the third fluid path.

[0026] The first fluid path may include an IV bag connector.

[0027] The fourth fluid path may include a liquid blocking filter.

[0028] The infusion portion of the pump consists of compressible peristaltic pump tubing located on the outside of the housing. It may be configured as follows.

[0029] Each console connector consists of a connector housing and a pneumatic interface sleeve. The connector housing may be substantially rigid and may include a peristaltic pump. The fluid path may include a receiving tube that engages the tube. and a portion of one of the second fluid paths. may be formed as part of the connector housing, and may have an opening therethrough and a and a seal.

[0030] Each console connector is closed ( The valve may further include a two-way valve in a closed position.

[0031] The plurality of fluid paths disposed within the housing may be at least partially formed from flexible tubing. The housing may include an interior support wall along which Therefore, a flexible tube may be disposed.

[0032] The fluid management system further includes a supply fluid container, a handpiece, and a waste container. That's fine.

[0033] A method for using a surgical irrigation cassette includes the steps of preparing the cassette and controlling the cassette. Inserting the cassette into the console and connecting the cassette to the supply fluid container, handpiece, and waste and connecting the housing, the pump tube, and the plurality of A cassette is provided having a housing and a fluid path. The pump tube defines a chamber therein. The pump tube is a compressible peristaltic pump tube. The plurality of fluid paths are disposed at least partially within the chamber. and a first fluid path, a second fluid path, a third fluid path, and a fourth fluid path. and a fifth fluid path. The first fluid path is connected to the first end of the pump tube. The second fluid path has a first end connected to the fluid supply container and a second end connected to the fluid supply container. a first end connected to the second end of the pump tube and a second end connected to the handpiece; The third fluid path has a first end connected to the handpiece and a waste container. The fourth fluid path has a first end connected to the housing. a first end connected to the console connector and a second end connected to a waste container. The fifth fluid path has a first end connected to the third fluid path and a second end fixed to the housing. The cassette has a second end connected to a second console connector. The control console includes or is connected to a vacuum source. The second end of the second fluid path is connected to a supply fluid container. The first end of the third fluid path is connected to the handpiece. The second end of the fourth fluid path is connected to a waste container. can be.

[0034] Pump rollers may be selectively engaged with the peristaltic pump tubing, such engagement being The method may also include transferring fluid from a supply fluid container to the handpiece. and selectively adjusting the vacuum source to adjust the vacuum pressure in the handpiece. It may be included in.

[0035] The method includes providing a suction manifold; and connecting a fifth fluid path to the suction manifold. The method may further include selectively connecting the suction manifold to the atmosphere via a suction manifold. The vacuum manifold may be disposed between the vacuum source and the cassette. The device may be fluidly connected to the air and console connector.

[0036] The method includes detecting when the increase in vacuum sensed in the handpiece reaches a predetermined threshold. If necessary, the method may further include connecting the fifth fluid path to the atmosphere.

[0037] In describing at least one embodiment of the structure described herein, relative orientation and direction (e.g., above, below, bottom, rear, front, rear, behind, outside) , internal, inward, outward, lateral, left side, right side, proximal side, distal side) are defined, These provisions are for the convenience of the reader, not for limitation.

[0038] The components shown may take many different forms and may include multiple and / or alternative The exemplary components shown are not intended to be limiting. Additional or alternative components and / or implementations may be used. In addition, components shown in the drawings are not necessarily drawn to scale unless expressly indicated. stomach. [Brief explanation of the drawings]

[0039] [Figure 1] FIG. 1 is a perspective view of an exemplary surgical irrigation cassette positioned for insertion into a control console. [Figure 2] 2 is a schematic diagram of an example surgical fluid management system and the relationship of the cassette of FIG. 1 to other components of the fluid management system. [Figure 3] FIG. 3 is a system diagram of the surgical fluid management system of FIG. 2. [Figure 4] FIG. 2 is a perspective view of the cassette of FIG. 1. [Figure 5] FIG. 2 is an exploded view of the cassette of FIG. 1. [Figure 6] FIG. 2 is an exploded view of an exemplary peristaltic pump tubing and console connector of the cassette of FIG. 1. [Figure 7] 7 is a cross-sectional view of the tube and connector of FIGS. 5 and 6 taken in the direction of arrow 7 through plane 7'. FIG. [Figure 8] FIG. 8 is a first perspective view of the combined seal and valve of the connector of FIGS. 6 and 7. [Figure 9] FIG. 9 is a second perspective view of the combined seal and valve of FIG. 8. [Figure 10] 5 is a cross-sectional view of the console connector of FIG. 4 taken in the direction of arrow 10 passing through face 10'. [Figure 11] FIG. 11 is a cross-sectional view of the console connector of FIG. 10 receiving a port tube. [Figure 12] FIG. 10 is an exploded view of the vacuum adjustment connector of the cassette. [Figure 13] 13 is a cross-sectional view of the vacuum regulating connector of FIG. 12 taken in the direction of arrow 13 through face 13' of FIG. 5 with the check valve in an open position. [Figure 14] FIG. 14 is a cross-sectional view of the vacuum regulating connector of FIG. 13 with the check valve in a closed position. DETAILED DESCRIPTION OF THE INVENTION

[0040] As shown in FIGS. 1-14, an exemplary surgical fluid management system 20 includes an exemplary control The system includes a control console 22 and an exemplary removable cassette 24. is adapted to be selectively received by and engaged with the console 22. It has become like this.

[0041] 1 shows the cassette 24 positioned outside the console 22. The cassette opening 25 (herein referred to as the receiving slot 25) of the console 22 and the cassette 2. In anticipation of the fact that the slot 24 is moved in the direction of arrow A to be inserted into the slot 25. The receiving opening 25 does not necessarily have to be restricted in shape to a slot. However, other geometric shapes are possible, such as, but not limited to, circular apertures, square apertures, The cassette 24 may have an oval opening, etc. The cassette 24 may be slid into the slot 22. The device is selectively and removably inserted into the console 22 by being movably pushed in. Once inserted into the console 22, the cassette 24 That is, the inserted cassette 24 is considered to be located within the console 22. The cassette 24 is placed in the slot 25. The cassette 24 may be selectively removed from the console 22 by A release button or switch (not shown) may be pressed before or during the process of removing the console 22. This can be done smoothly by pressing

[0042] FIG. 2 shows a schematic diagram of the cassette 24 and its relationship to other system components. The role of the cassette 24 is to facilitate the connection of the components shown in the figure. A number of fluid paths are incorporated into the cassette 24. These fluid paths are Cassette 24 is located within console 22 and connects some of the components. The figure is shown in its assembled state.

[0043] Cassette 24 is also shown connected to a fluid source 26 by a first fluid path 27. The fluid source 26 may be in the form of, for example, but not limited to, a supply fluid container. The supply fluid container may be, for example, but not limited to, an intravenous fluid supply containing a liquid solution. The intravenous bag 26 may be in the form of an intravenous bag (infusion bag) 26, herein referred to as an IV bag. The cassette 24 is also called the IV bag 26. The cassette 24 is designed to be easily connected to an IV bag. The first end of the first fluid path 27 may include a V-bag connector 45. 24 is connected to the suction side of a pump 28 having an infusion portion partially integrated within it. The pump 28 may be a positive displacement pump. For example, but not by way of limitation, a peristaltic pump 28, described in more detail below. The pump 28 detailed herein is a peristaltic pump (hereinafter Other pump types (including some described below) may be used. The pump includes a peristaltic pump tube 29 embedded within the pump 24. The pump roller 21 of the pump 28 constitutes the infusion part of the pump 28. The pump roller 21 is disposed in the console 22. The second end of the fluid path 27 is connected to a fluid source 26. The solution in the IV bag 26 is selected to be suitable for irrigating the surgical site. As previously mentioned, alternative pumps may be used, one example of which is a limited Although not commonly used, centrifugal pumps are also used. A further alternative type of pump is described in U.S. Pat. Other alternatives are found in Patent Nos. 5,046,486 and 6,099,494. As a pump, it functions as the infusion portion of the pump, located within a cassette (not shown). One example is one having a positive displacement pump rotor and a drive wheel located in the console. A drive wheel (not shown) driven by a motor 23 drives the pump rollers 2 1, but this drive wheel is magnetically connected to the rotor. This allows the pump rotor to be rotated without mechanical contact between the wheel and the pump rotor. It can be driven.

[0044] The cassette 24 is also connected to the surgical hub by a second fluid path 32 and a third fluid path 33. The fluid paths 32 and 33 are connected to the end piece 30 within the cassette 24. An exemplary handpiece 30 is a Stryker® (Stryker The handpiece is found in the Sonopet® ultrasonic aspirator by the Corporation. 30 for tissue removal, fluid delivery to the surgical site, and fluid and debris removal from the surgical site; More specifically, it allows for the removal of surgical debris by suction. Alternatively, this is called irrigating the surgical site. Drainage of fluids and debris is often accompanied by aspiration of fluids and debris. This is accomplished by, alternatively referred to as, fluid and debris aspiration. Aspiration is described in more detail below. Control of suction and irrigation at the surgical site is achieved by application of a vacuum as described herein. The second fluid path 32 directs fluid through the handpiece. a third fluid path 33 directs fluid through the handpiece 30 to the surgical site; The surgical site is drained via the catheter.

[0045] The second fluid path 32 has a first end connected to the discharge side of the pump 28 and a second end connected to the handpiece 3. The third fluid path 33 is connected to the handpiece 30 and has a second end connected to the handpiece 30. and a second end that is connected to a waste container 31. 31 may be in the form of a rigid waste canister 31. Handpiece connector 3 4 are connected to the cassette 24 as part of the second fluid path 32 and the third fluid path 33, respectively. It is preferable that the ion implantation device 10 is interposed between the ion implantation device 10 and the handpiece 30.

[0046] The cassette 24 is connected to the waste canister 31 by a third fluid path 33. The waste canister 31 is used to transport a third fluid from the surgical site by the handpiece 30. It is adapted to receive the exhaust fluid and accompanying debris which is drawn through passage 33 .

[0047] The cassette 24 is also connected to a suction manifold 35 built into the console 22. A vacuum source 36, such as, but not limited to, a vacuum pump, may be used. The cassette 24 is selectively pneumatically connected to the handpiece 30 and the waste The associated vacuum pressure in the waste canister 31 is used by the system, including the surgeon and other system users. as managed by the system operator and the system control logic in console 22. The term "vacuum pressure" as used herein means the pressure at which the The terms "vacuum" and "negative pressure" are equivalent as used in the specification, and both As used herein, "ambient air" refers to a pressure lower than that of ambient air. The term "air" is equivalent to the term "atmosphere" and neither term The pressure of the ambient air is referred to herein as "atmospheric pressure." The first end of the fluid path 37 is connected to a cassette 36 via a suction manifold. The second end of the fourth fluid path 37 is connected to the first console connector 38 of the port 24. The suction manifold 35 is connected to a waste container 31. The suction manifold 35 also has a third fluid path 33. is selectively connected to the ambient air, i.e., atmosphere, via a fifth fluid path 39.

[0048] The fifth fluid path 39 has a first end connected to the third fluid path 33 and a second end connected to the cassette 24. and a second end connected to a second console connector 40. As will be described, when the cassette 24 is inserted into the console 22, the second console console The second end of the fifth fluid path through connector 40 is connected to the atmosphere via suction manifold 35. To be continued.

[0049] FIG. 3 illustrates an exemplary component level view of a vacuum manifold 35 including at least a portion of the vacuum manifold 35. 1 shows a schematic representation of an exemplary fluid management system 20 including a suction portion 41.

[0050] A cassette 24, shown in phantom at 24 in FIG. 3, contains a plurality of tubes, which will be described in more detail below. These tubes are provided with a handpiece 30, a canister 31, and a phantom line 2. 2 and a fluid path 33, 34 connecting the console 22 and the vacuum source 36. Cassette 24 includes at least a portion of selectively actuable flow path restrictors. The flow path restrictor also includes a stage (flow path restrictor mechanism) and a liquid stop connector 43. The valve may be, for example, but not limited to, a pinch valve 42. Instead of a pinch valve, a gate valve may be used as the movable flow restrictor 42. The port valve may be actuated by an actuator, such as, but not limited to, an electronic solenoid, an electronic The cassette 24 is operated by a stepping motor or the like. The liquid blocking filter 44 prevents the liquid in the canister 31 from entering the console. 22.

[0051] The throttle valve 42 throttles the flow through the third fluid path 33, thereby restricting the flow of fluid at the surgical site. To limit the vacuum suction of the handpiece 30 and the ejection of material from the handpiece 30 The throttle valve 42 may be at least partially pneumatically displaceable, alternatively and a valve actuator (not shown), such as, but not limited to, a pneumatic piston. The valve actuator may comprise a valve actuator (here a third chuck). To squeeze (pinch) the flexible tube 70 (referred to as tube 70), the The tube 70 is pressed. The tube 70 forms a part of the third fluid path 33. The third fluid path 33 is throttled by atmospheric pressure or vacuum supplied by the control valve 46. Such a restriction creates a third fluid path 33 between the handpiece 30 and the waste canister 31. This restriction blocks flow through the tube in response to the application of vacuum pressure to the valve actuator. This is preferably achieved by displacement of a piston-type valve actuator relative to the valve 70. The third tube 70 functions as the valve 42, and the tube 70 is actuated by a valve actuator. In FIG. 3, the actuator piston of the console 22 provides a mechanical connection between the console 22 and the third tube 70 of the cassette 24. To point out this, the connection between valve 42 and valve 46 is shown by a dashed or dotted line. It has been done.

[0052] Such a valve actuator may be located within the console 22. 2 controls the valve actuator to apply either vacuum or atmospheric pressure to open or close the throttle valve 42. or a displacement actuator, e.g. For example, but not limited to, a motor that is selectively variable by an electric solenoid (not shown). This may be accomplished by a control valve 46 positioned in the control valve 46 and its associated displacement actuator. Both of the control valves 46 may be located within the console 22. In the open position, the control valve 46 In a first position, the actuator piston of the throttle valve 42 is The valve 42 is connected to the atmosphere via a first opening 47 to the atmosphere, thereby placing the valve 42 in an open position (rest position ) to communicate the liquid with the third fluid path 33. Thus, the control valve 46 connects the actuator piston of the throttle valve 42 to the vacuum source 36, This moves the throttle valve 42 to the closed state, closing the third fluid path 33. , in the first mode, fluid is selected to flow from the handpiece 30 to the canister 31. The throttle position, i.e., the closed position, may be controlled by a solenoid valve that is electrically operated. The selection between the restricted and unthrottled, i.e., open, position is controlled by a signaling device, e.g. Although not provided, it may be provided using a foot pedal (not shown) in communication with the console 22. , which may be performed by the system operator.

[0053] a first end connected to a third fluid path 33 between the throttle valve 42 and the handpiece 30; a fifth fluid path 39 having a second end connected to a second console connector 40; This allows for the release of vacuum at the surgical site through the console 22. A relief valve 50 is disposed in the console. The relief valve 50 is located in the fifth fluid path 39. It is used to connect the second end to the atmosphere via a first opening 47 to the atmosphere. A defined flow path tube 52 and a plurality of, for example, but not limited to, three vacuum A pressure sensor 54 is connected within the console 22 between the cassette 24 and the relief valve 50. and a first relief fluid path 56 for estimating the flow through the path 56. A console control (not shown) responds to the vacuum readings from sensor 54. and selectively opening valve 50 to release the vacuum in third fluid path 33. It is.

[0054] A fourth fluid path 37 connects the canister 31 to a vacuum pump 36. 36 is connected to the atmosphere through a second opening 57 to the atmosphere. The fourth valve is provided to block the liquid in the canister 31 from reaching the console 22. A vacuum communication fluid path 58 is disposed within the console 22. The cassette 24 is disposed between the vacuum source 36 and the defined flow path tube 52. For example, but not limited to, a combination of three vacuum pressure sensors 54 may be used to provide vacuum communication. It is placed along the fluid path 58 and is used to estimate the flow through the path 58. The communicating fluid path 58 also extends through a second variable flow relief valve 62 and a third opening 60 to the atmosphere. It is connected to the atmosphere.

[0055] The exemplary cassette 24 shown in FIGS. 4 and 5 includes a cassette housing 64 and a liquid reservoir. pump elements, such as, but not limited to, compressible peristaltic pump tubing 29 and a first a first tube 66 that constitutes a part of the fluid path 27 and a second tube 67 that constitutes a part of the second fluid path 32; a second tube 68 forming a part of the third fluid path 33; and a third tube 70 forming a part of the third fluid path 33. a fourth tube 72 constituting a part of the fourth fluid path 37; The fifth tube 74, which is a part of the liquid stop connector 43, and the first console connector a second console connector 40, and a liquid blocking filter 44. .

[0056] The fluid path tubing 66, 68, 70, 72, 74 and the peristaltic pump tubing 29 are flexible. It is preferable that the material used for the tubes 66, 68, 70, 72, 74, and 29 is transparent. One exemplary material that can be used is Tygon® tubing. Each of 70, 72, and 74 is a continuous single piece of tubing, as can be seen from the diagram. There is no need to cut the tube into several smaller pieces and then join the smaller pieces together. By doing so, each of the tubes 66, 68, 70, 72, and 74 is formed. It may be possible.

[0057] As best seen in FIGS. 1, 4, and 5, the cassette housing 64 is substantially It is generally rigid and made of plastic, such as but not limited to thermoset plastic. The exemplary housing 64 may be formed from a third peripheral wall 80. The third peripheral wall 80 is formed by first and second walls 76 and 78. The walls 76, 78 are spaced apart from one another and define an interior region 82 of the housing 64. An internal support wall 84 is disposed within the housing 64. The internal support wall 84 64 to help define paths for the tubes 66, 68, 70, 72, 74. The fluid paths 27, 32, 33, 37, 39 may alternatively be at least partially connected to the housing 64. In this case, a plurality of molded cavities may be formed in the channels 27, 32, 33, It may also form part of 37, 39.

[0058] The housing 64 is provided with a first wall 76 of the housing 64, as best seen in FIG. The protrusion 86 is formed on the inside of the console 22. The latch is engaged at the latch engagement surface 88 by a latch (not shown). , which may be manually released depending on how the console 22 is configured. or electrically released, thereby allowing the cassette 24 to be withdrawn from the console 22. The automatically actuated electrical release of the latch allows automatic cassette The automatic cassette ejection system should be combined with an electric actuator. The cassette is driven by a actuator, for example, but not limited to, a solenoid or a motor. configured to selectively at least partially eject the mouse 24 from the console. .

[0059] The housing 64 has C-shaped sides (side walls) defined by walls 76, 78, and 80, which cooperate to form a C-shaped wall. ) 90. The C-shaped side 90 (alternatively referred to herein as the lower arm 92) a first arm 92 (also referred to herein alternatively as upper arm 94); The first console connector 38 is disposed at the end of the first arm 92. A second console connector 40 is located at the end of the second arm 94. The console connectors 38, 40 are connected to the walls 76, 78, 80 or formed integrally with walls 76, 78, 80. Regardless, it forms part of the housing 64 .

[0060] The first and second consoles shown in FIG. 5 are assembled into the peristaltic pump tube 29. The console connectors 38, 40 are shown in an exploded view in Figure 6. are substantially mirror images of each other, except that connectors 38 and 40 have the following characteristics: A cassette chamfer 93 is provided along one corner edge of the connectors 38, 40. Here, the cassette chamfer 93 is different from the cassette chamfer 92 in that, for example, Although not included, chamfers are provided along the corner edges of the second connector 40. 93 is a keying feature, i.e., an orientation feature (posture feature) of the cassette 24. The cassette chamfer 93 and the complementary slot chamfer 95 are fitted to the console receiving slot. 25, the cassette 24 can be prevented from being inserted incorrectly into the slot 25, for example, by restricting Although it is not intended to be used for this purpose, it can prevent upside-down insertion, incorrect orientation, etc. The ribs 93 are provided to allow the cassette 24 to be received by the receiving slot 25. 1, extending the entire length of the cassette housing 64. Alternatively, the end of the cassette housing 64 may be positioned at the end of the console 22 in the installed position. For cassettes 24 configured to remain outside, chamfer 93 is provided on the cassette housing 6 4. Unless otherwise specified, the console connector 38 , 40 may be substantially rigid and made of the same material as the cassette housing 64, e.g. It is preferable that the material is made of, but not limited to, a thermoplastic.

[0061] The first and second console connectors 38, 40 each have a first connector base 96 and a second connector base 96', a first passage cap 98, and a second passage cap 98 The connector caps 98 and 98' are provided with the connector bases 96 and 98, respectively. The connector bases 96, 96' and the passage cap 98 are arranged to cover the ends of the connector bases 96, 96'. , 98' may be substantially rigid and may be made of the same material as the cassette housing 64, e.g. It may be made from, but is not limited to, a thermoplastic material, as described in more detail below. After installation of the described sealing valve 114, the passage cap 98 may be attached to any suitable joining means, e.g. For example, but not limited to, it may be secured to the base 96 by adhesive, press fit, welding, etc. 10 and 11 show an exemplary ultrasonic bonding method for bonding a cap 98 to a base 96 near its outer periphery. The wave weld 99 is shown schematically. The base 96' and cap 98 of the second connector 40 ' may also be joined together in the same way.

[0062] The connector bases 96, 96' of the console connectors 38, 40 are each fitted with a receiving tube. For example, but not limited to, barbed nipples 100, 100' The nipple 100 of the first console connector 38 is connected to the peristaltic pump tubing 2 The nipple 100' of the second console connector 40 receives the first end of the peristaltic port 9. The second end of the pump tube 29 is received in the nipple 100, 100'. To aid in retention, a retaining ring 102 is placed over the end of the tube 29. As best shown, the peristaltic tube 29 is substantially flush with the peripheral wall 80 of the C-shaped side 90. It is good to have a row.

[0063] The first passage cap 98 defines a connecting passage 104 of the first fluid path 27. The second passage cap 98' defines a connecting passage 104' of the second fluid path 32. 7 shows that the connecting passages 104, 104' are flush with the peristaltic pump tube 29. However, as indicated by the passages 104 and 104' in FIG. 4, 104' may be angularly offset from each other.

[0064] The first and second console connectors 38, 40 are each led into a housing 64. The liquid interface sleeves 106, 106' and the pneumatic interface sleeve 108, 108'. The fluid interface sleeves 106, 106' and the air The pressure interface sleeves 108, 108' are substantially identical and are primarily 4 differ in their use within the

[0065] The first and second console connectors 38, 40 are connected to the caps 98, 98', respectively. Openings, such as, but not limited to, a first pneumatic connector port 110 and a second pneumatic connector port 112 The ports 110 and 110' are connected to the console 2. 2 port tubes, for example, first pneumatic port tube 11 best shown in FIG. 2, the pneumatic interface sleeves 108, 108' are aligned straight to facilitate the reception of the The first pneumatic connector port 110 receives the first pneumatic connector. Only the pneumatic port tube 112 is shown, but the second pneumatic connector port 110' The relationship of the second pneumatic port tube (not shown) received by the Similarly, the port tube 112 connects the pneumatic console port 112 of the console 22 to the It is defined.

[0066] The sealing valve 114 is captured between the cap 98 and the base 96. is a flexible material suitable for use as a seal, such as, but not limited to: Formed from polymeric materials, such as, but not limited to, rubber and neoprene As best seen in FIGS. 8 and 9, the sealing valve is located outside the port tube 112. The cylindrical valve wall 116 has a first inner diameter greater than the diameter of the inlet end of the cylindrical valve wall 116. The annular seal 118 is integrally formed with the cylindrical valve wall 116. , extending radially beyond the cylindrical valve wall 116 .

[0067] Also, a two-way valve 120 formed integrally with the cylindrical valve wall 116 is opposite the inlet end of the valve wall 116. The valve 120 is in the form of a closure 122 that covers the end. The closure portion 122 has a dome shape. That is, the closure portion 122 forms a dome. The dome-shaped closure portion 122 is, when viewed from the outside of the cassette housing 64, a cylindrical valve wall 11 The dome shape of the closure portion 122 is a perfect hemisphere. The dome-shaped closure portion 122 may be a plurality of, for example, but not limited to, It has four evenly spaced slits 124. These slits 124 are The slit 1 extends radially from the center point of the closure portion 122 through the closure portion 122. The number of slits 124 may be varied. The slits 124 are formed so that the closure portion 122 can deform and open to the port. A radius sufficient for the probe 112 to penetrate the closure 122 without tearing the sealing valve 114. The concave dome shape of the valve 114 is preferably oriented to accommodate the pneumatic connector of the cassette 24. The liquid reaching the fourth and fifth tubes 72, 74 connected to the ports 110, 110' This will aid in retention. Valve 114 operates as a two-way valve.

[0068] The sealing valve 114 also includes a lip 126 on the inner diameter side of the cylindrical valve wall 116 near the inlet end. The inner diameter of the lip 126 is smaller than the outer diameter of the port tube 112. 26 is a port tube 112 to allow for a pneumatically sealed engagement therebetween. The sealing engagement between the cap 98 and the seal 118 may be a pneumatic seal that seals the cap 112. To achieve this, the bead 128 is It is formed on the cap 98 to surround the port 110 .

[0069] The housing 64 may house an actuator, such as, but not limited to, a console. A pinch valve window 130 is provided in the second wall 22 to allow actuation of a pneumatic piston. 78. A window 130 is aligned with the third tube 70. Also, the housing 64 includes a support base 132 in the first wall 176 that is aligned with the window 130. The support base allows for compression and therefore throttling of the tube 70 by the pneumatic piston of the console 22. It provides a reactive surface that makes it possible to

[0070] The liquid stop connector 43 is best seen in Figures 12 to 14. Liquid Stop Connector The valve includes a holding chamber 134, a pipe 136, a valve ball 138, and a ball trap ring 140. , a chamber cover 142, and a chamber baffle wall 144. 34 is alternatively referred to herein as reservoir 134.

[0071] The liquid stop connector 43 is disposed between the fifth tube 74 and the third tube 70. The pipe 136 is disposed within the third tube 70. In the illustrated operating position , i.e., the cassette 24 is aligned with the directional arrow 146 molded into the housing 64. When installed in the console according to the installation orientation, the chamber 134 is connected to the pipe 136 The pipe 136 and the chamber 134 are located above the The chambers are fluidly connected to each other by a first stem 138 that connects to the bottom of the chamber. A second stem 150 located above the bottom of the chamber near the top separates the chamber 134 from the first stem. The chamber 134, the pipe 136, the first stage 134, and the tube 74 are fluidly connected to each other. The first stem 148 and the second stem 150 are integrally formed as a single piece of a common material. A chamber cover 142 is sealingly secured to the top of the chamber 134. The valve ball 138 may be formed from a lightweight, flexible, water-resistant material. As an example of the material, the liquid ingress from the third tube 70 into the chamber and the valve ball 13 8 or the phase of the fifth tube 74 against the pressure in the third tube 70. The ball 138 and ring 140 are held in place by any rapid, i.e., sharp, change in counter pressure. The first stem 148 includes a silicone to promote a seal between the ball. It is preferable that the chuck 138 has a plurality of support columns 152 for supporting the chuck 138 from below. This allows for limited return of fluid from the chamber to the pipe 136 and the third tube 70. In the open position, the ball is biased by gravity to rest on the post 152. (Alternative The bottom surface 154 of the chamber 134 (also commonly referred to as the floor 154 of the chamber 134) is 48, the first stem 14 may be inclined to facilitate discharge. The ball trap ring 140 is tapered toward the ball 138. The ball trap ring 140 is disposed above the ball 138. The ball 13 generated by the inflow of fluid into the first stem 148 may be The upward movement of the ball 138 presses the ball 138 against the concave surface of the trap ring 140, which This seals off fluid from entering the chamber 134 from the first stem 148. 138 and trap ring 140 cooperate to form a one-way ball check valve.

[0072] The cover 142 is integrally formed with the chamber baffle wall 144. 44 engages with the cover 142 and extends substantially vertically downward from the cover 142. The baffle wall 144 is disposed between a first stem 148 and a second stem 150. The bottom edge 155 of the baffle wall 144 is recessed from the chamber wall 144 to provide a liquid return gap 156. The baffle wall 144 is spaced a predetermined distance D from the bottom surface 154 of the For example, the baffle wall 144 may be formed as part of the chamber 134. Extending from the floor 154 of the chamber 134 and passing laterally above the valve ball 138 and ring 140 It may extend in the direction.

[0073] The cover 142 has a ball lock stopper 145 extending therefrom. The ball lock stopper 145, best seen in FIG. 12, extends downward from the cover 142. When the liquid stop connector 43 is assembled in the installed position, The lock stopper 145 is located above the ball 138 and the ring 140. The stopper 145 is located at the installation position of the first stem 148 of the liquid stop connector 43 in use. This helps to hold the ring 140 in place. The installation position is best shown in FIGS. 13 and 14. The advantages of the baffle wall 144 in restricting unwanted fluid flow are emphasized. For clarity, ball lock stop 145 is not shown in FIGS.

[0074] As best shown in FIG. 12, the cover 142 and the pipe 136 are each The gate tabs 157 and 159 are attached to the cover 14. 2. Integrated chamber 134, pipe 136, first stem 148, and second stem 150 This facilitates the molding of each of the above.

[0075] The sealed position of the ball 138 is shown in FIG. 14, and the open position of the ball 138 is shown in FIG. There are.

[0076] The cassette 24 is configured to encourage only one use of the cassette 24. Therefore, efforts must be made to address contamination of cassettes that occurs during use. Reuse of the cassette 24 requires rebuilding the cassette and, at a minimum, replacing the housing 6 4 and replacement of the fluid passages, seals, and valves that make up the cassette 24. In order to facilitate assembly of the housing 64 and to prevent disassembly of the housing 64, To do this, a barbed tab 158 is attached to at least one of the walls 76, 78, 80 (or to another wall 76, 78, 80) to engage with the notches 160. Radio frequency identification (RFID) (not shown) in console 22 In combination with a cation) reader (not shown), the RFID tag is located within the cassette housing 64. If the cassette 24 is installed in a single-use unit, it is recommended that the cassette 24 be used once. In other words, RFID tags and RFID readers are used to avoid the reuse of disposable parts. One method is described in U.S. Patent Application Publication No. 2007 / 000247, published April 19, 2007. It is described in No. 85686A1.

[0077] In operation, the operator or assistant, for example, but not limited to, The cassette housing 24 is inserted into the slot 25 of the console 22 by the nurse or surgical technician. By pushing the cassette housing 24 into the slot 25, The first air pressure port tube 112 and the second air pressure port tube (as shown) of the console 22 ) are connected to the pneumatic connector port 110 of the first console connector 38 and 2 is inserted into the pneumatic connector port 110' of the console connector 40, The first pneumatic connector port 11 is engaged with the sealing valve 114 of each of the connectors 38, 40. Insertion of the first pneumatic port tube 112 into the fourth tube 72 connects the fourth tube 72 to the vacuum source. 36. Similarly, a second pneumatic connector (not shown) into port 110'. Insertion of the second pneumatic port tube connects the fifth tube 74 to the suction manifold 35. If not integral to the console 22, the vacuum source 36 would be connected to the operator. Therefore, it is preferable to connect the IV bag connector 4 to the console 22. 5 is connected to the IV bag 26, and one end of the third tube 70 is connected to the canister 31. The other end of the third tube 70 is connected to the handpiece 30, and the fourth tube 72 is connected to the The operator may also connect the handpiece 30 to the second tube. The second tube 68 and the third tube 70 may be connected to each other. The connection of the handpiece 30 may be made by using a handpiece connector 34. The latch engagement surface 88 of the retaining projection 86 of the set housing 64 is disposed within the console 22. The cassette housing 64 is secured to the console by engaging with a latch (not shown) attached thereto. The RFID tag on the cassette housing 64 identifies the new, suitable cassette. The fluid management system is then configured to recognize the fluid by a reader in the console 22 that identifies the fluid. This allows all features of the system 20 to operate.

[0078] Once installed, the cassette 24 is filled with a liquid, such as, but not limited to, a sterile An irrigation solution consisting of saline ("irrigation solution") is delivered to the surgical site from an IV bag 26 and used to drain and and surgical debris ("waste") from the surgical site into the canister 31. It is used.

[0079] Upon selective request from the operator, specifically, a cleaning signaling device, e.g. For example, but not limited to, a manual or foot-operated flush switch (not shown). When instructed to do so, fluid is pumped by pump 28 from IV bag 26 through a first tube. 66. The pump rollers 21 engage the peristaltic pump tubing 29. That is, the peristaltic pump tube 29 is pressed, and then driven by the motor 23 to wash Fluid is transferred through the peristaltic pump tubing 29 from the first connector 38 to the second connector 40. The irrigation fluid then flows through the second tube 68, the handpiece connector 34, and the handpiece. The instrument moves through dowel piece 30 to the surgical site.

[0080] Upon selective request from the operator, specifically, a suction signaling device, e.g. For example, but not limited to, a manual or foot operated suction switch (not shown). When instructed to do so, waste is drawn from the surgical site by negative pressure to the canister 31. The canister passes through the handpiece 30, the handpiece connector 34, and the third tube 70. I was drawn into Ta31.

[0081] The vacuum in the canister 31 is created by a vacuum pump 36. The negative pressure generated by this is passed through the manifold 35 connected to the first pneumatic port tube 112. , through the first connector 38 and the fourth tube 72 to the canister 31 .

[0082] The application of vacuum pressure in the handpiece 30 may be, for example, but not limited to, The pressure is adjusted by applying or releasing the pressure by opening or closing the valve 42. When the valve 42 is in the open position, That is, when the third tube 70 is not throttled, the vacuum in the canister 31 is It communicates with the handpiece via tubing 70 and will draw waste from the surgical site. Specifically, when the valve 42 is in the closed position, the third tube is connected to the When throttled by the valve actuator (not shown), flow through the third tube 70 is blocked. The vacuum is cut off and waste is not drawn from the surgical site. This may be selectively performed by an operator using the device.

[0083] The vacuum in the handpiece 30 is further adjusted by adjusting the pressure in the third tube 70. Such adjustment may be accomplished by opening or closing the first variable flow relief valve 50. For example, the valve 50 may be configured to, upon detecting a predetermined amount of negative pressure in the handpiece 30, specifically: is indicated by one or more of the sensors 54 and a control located within the control console 22. When directed by the logic, it is opened to the atmosphere, thereby and reduce the vacuum in the handpiece 40. Such adjustments can be made by the console It may be automatically managed by a controller (not shown) located within 22.

[0084] Upon completion of the procedure, the cassette 24 is repositioned in accordance with instructions from the operator or an assistant, e.g., It is not intended to be a command, but may be a button press or other signal to the console 22. Therefore, the cassette 24 is selectively removed from the console 22. and detached from the IV bag 26, canister 31, and handpiece 30. It should then be disposed of.

[0085] In the drawings, like reference numbers refer to like elements. Some or all of the above may be modified. For example, the shape of the housing 64 may be rectangular in cross section. Rather, it may be cylindrical with a circular cross section. The cassette may be received by a console having a complementary cylindrical opening. To simplify the twist-lock mechanism, the tabs are designed to lock the housing or cassette open. The port and the receiving groove may be provided on one side of the inner wall of the cylindrical wall and the receiving groove on the other side. The bolt and cassette opening are aligned with each other in the locked position to allow fluid connection. Instead of a port and seal in the wall, a port concentric with the opening should be used. A port tube may be adapted to be received in the port opening of the housing. With respect to the processes, systems, methods, etc. described in the specification, Although the steps are described as being performed in some regular order, The processes described herein may be performed in an order other than that described herein. It should be understood that some steps may be performed simultaneously. Other steps may be added, and some steps described herein may be omitted. It should be further understood that steps may be omitted. The description of the process is presented to illustrate some embodiments and is not intended to limit the scope of the claims. should never be interpreted as such.

[0086] Accordingly, the foregoing description is intended to be illustrative and not limiting. It should be understood that, upon reading the foregoing description, many embodiments and alternatives to the examples provided are possible. The scope of the invention should not be determined based on the foregoing description. rather, the full scope of equivalents to which such claims are entitled shall be determined. It is understood that future developments in the technology described herein and the disclosed It is anticipated and intended that systems and methods may be included in such future embodiments. In short, it should be understood that this application is capable of modifications and variations.

[0087] As used herein, the adverb "substantially" refers to the material, machining, Imperfections in manufacturing, data transmission, calculation speed, etc. can affect the shape, structure, measurement values, quantity, and time. Departure from the exact geometric shape, distance, measurement, amount, time, etc. This means that there is.

[0088] All terms used in the claims shall be construed as though they were part of the claims unless a contrary indication is expressly made herein. Unless otherwise specified, the terms have their ordinary meaning as understood by a person knowledgeable in the art described herein. In particular, the use of singular articles such as "a," "the," and "said" is intended to Unless a paragraph expressly states a contrary limitation, it may recite one or more indicated elements. It should be read as:

[0089] The Abstract is provided to allow the reader to quickly ascertain the nature of the technical disclosure. It is provided with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. In addition, in the foregoing Detailed Description, it will be seen that various features are grouped into various embodiments for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter is based on fewer than all features of a single disclosed embodiment. Thus, the following claims are incorporated into the foregoing Detailed Description, with each claim standing on its own as separately claimed subject matter. The claims of Patent Application No. 2021-516554 as originally filed were as follows: [Claim 1] a substantially rigid cassette housing defining a chamber and a first console connector; The infusion part of the pump; a plurality of fluid paths disposed at least partially within the chamber; 1. A surgical irrigation cassette comprising: the first console connector includes a first pneumatic connector port; an infusion portion of the pump comprising a suction side of the pump and a discharge side of the pump; the plurality of fluid paths include a first fluid path, a second fluid path, a third fluid path, and a fourth fluid path; the first fluid path having a first end connected to a suction side of the pump and a second end connected to a supply fluid container; the second fluid path has a first end connected to a discharge side of the pump and a second end connected to a handpiece; the third fluid path has a first end connected to the handpiece and a second end connected to a waste container; the fourth fluid path having a first end connected to the first console connector and a second end connected to the waste container; Surgical irrigation cassette. [Claim 2] The surgical irrigation cassette of claim 1 , wherein the housing comprises first and second substantially parallel walls connected by a peripheral third wall. [Claim 3] the housing has substantially C-shaped sides defining a first arm and a second arm; the first console connector is fixed to the first arm; The surgical irrigation cassette of claim 1 , wherein a second console connector including a second pneumatic connector port is secured to one of the first arm and the second arm. [Claim 4] The surgical irrigation cassette of claim 3 , wherein the second console connector is secured to the second arm. [Request Item 5] each of the first pneumatic connector port and the second pneumatic connector port defined by an associated opening for receiving a port tube; The surgical irrigation cassette of claim 3 , wherein the first console connector and the second console connector each further comprise a seal for sealingly engaging the port tube. [Claim 6] 4. The surgical irrigation cassette of claim 3, wherein the first console connector and the second console connector each include a seal for pneumatically sealingly engaging a console pneumatic port tube. [Claim 7] 7. The surgical irrigation cassette of claim 6, wherein the first console connector and the second console connector each include a two-way valve having a closed state when the first console connector and the second console connector do not receive the pneumatic port tube. [Claim 8] 8. The surgical irrigation cassette of claim 7, wherein the two-way valve is formed from a polymeric material, the two-way valve having a concave shape in external view and a slit therethrough. [Claim 9] 9. The surgical cassette of claim 8, wherein the two-way valve and the seal are integrally formed from the polymeric material. [Claim 10] The surgical irrigation cassette of claim 1 , wherein the housing includes a window disposed over one of the plurality of fluid paths for receiving a path restrictor. [Claim 11] The surgical irrigation cassette of claim 1 , wherein the housing includes a window disposed above the third fluid path for receiving a path restrictor. [Claim 12] 10. The surgical irrigation cassette of claim 1, wherein a fifth fluid pathway includes a first end connected to the third fluid pathway and a second end connected to a second console of the housing. [Claim 13] a liquid stop connector; The liquid stop connector is a reservoir disposed within the housing between the third fluid path and the fifth fluid path; a normally open one-way valve disposed between the third fluid path and the reservoir; 13. The surgical irrigation cassette of claim 12, comprising: [Claim 14] a pipe disposed within the third fluid path and constituting a part of the third fluid path; the reservoir is disposed between the pipe and the fifth fluid path; The surgical irrigation cassette of claim 13, wherein the one-way valve is disposed between the pipe and the reservoir. [Claim 15] The one-way valve is constituted by a ball check valve, 14. The surgical irrigation cassette of claim 13, wherein the ball of the ball check valve is biased to an open position by gravity in an installed orientation and is configured to be urged upward to a closed position by one of impact with liquid from the third fluid path and an increase in fluid pressure in the third fluid path relative to the fluid pressure in the fifth fluid path. [Claim 16] the reservoir has a sloped floor above the ball check valve that tapers toward the ball check valve; 16. The surgical irrigation cassette of claim 15, wherein the sloped floor defines a fluid flow path in the installed orientation that directs flow from the reservoir to the ball check valve and back to the third fluid path past the ball check valve in the open position. [Claim 17] 17. The surgical irrigation cassette of claim 16, wherein the reservoir comprises a baffle wall positioned horizontally between the ball check valve and the connection to the fifth fluid path. [Claim 18] 18. The surgical irrigation cassette of claim 17, wherein the baffle wall has a lower end that defines a liquid return gap between the baffle wall and the sloped floor, and an upper end that engages a cover of the reservoir. [Claim 19] the cassette further comprises a handpiece connector connected to a second end of the second fluid path and a first end of the third fluid path; The surgical irrigation cassette of claim 1 , wherein the handpiece connector forms part of each of the second and third fluid paths. [Claim 20] The surgical irrigation cassette of claim 1 , wherein the first fluid path comprises an IV bag connector. [Claim 21] The surgical irrigation cassette of claim 1 , wherein the fourth fluid path comprises a liquid blocking filter. [Claim 22] 10. The surgical irrigation cassette of claim 1, wherein the infusion portion of the pump comprises compressible peristaltic pump tubing disposed outside the housing. [Claim 23] the cassette further comprises a second console connector; Each of the first console connector and the second console connector includes: a substantially rigid connector housing having a receiving tube that engages the peristaltic pump tube; a pneumatic interface sleeve formed as part of the connector housing; Equipped with the receiving tube defines a portion of one of the first fluid path and the second fluid path; 23. The surgical irrigation cassette of claim 22, wherein the pneumatic interface sleeve has an opening therethrough and a seal disposed within the opening. [Claim 24] further comprising a two-way valve in each of the first console connector and the second console connector; 24. The surgical irrigation cassette of claim 23, wherein the two-way valve is in a closed state when the cassette is not disposed within a console. [Claim 25] 2. The surgical irrigation cassette of claim 1, wherein the plurality of fluid paths disposed within the housing are at least partially constituted by flexible tubing, the housing having an interior support wall along which the flexible tubing is disposed. [Claim 26] a console defining a cassette opening and having two pneumatic console ports within the cassette opening; a vacuum source connected to or incorporated within the console, the vacuum source communicating with a first one of the pneumatic console ports; 、 a first pressure sensor integrated into the console and in communication with a second of the pneumatic console ports; a second pressure sensor incorporated within the console and in communication with the first of the pneumatic console ports; a cassette selectively slidably positioned within the cassette opening; A fluid management system comprising: The cassette comprises: a substantially rigid housing defining a chamber therein; The infusion part of the pump; a plurality of fluid paths disposed at least partially within the chamber; Equipped with an infusion portion of the pump comprising an intake side of the pump and an outlet side of the pump; the plurality of fluid paths include a first fluid path, a second fluid path, a third fluid path, a fourth fluid path, and a fifth fluid path; the first fluid path has a first end connected to the suction side and a second end connected to a supply fluid container; the second fluid path has a first end connected to the discharge side and a second end connected to a handpiece; the third fluid path has a first end connected to the handpiece and a second end connected to a waste container; the fourth fluid path has a first end connected to a first console connector of the housing and a second end connected to the waste container; the fifth fluid path has a first end connected to the third fluid path and a second end connected to a second console connector of the housing; the first console connector has a first pneumatic connector port that is pneumatically connected to the first of the pneumatic console ports when the cassette is installed in the cassette opening; the second console connector having a second pneumatic connector port pneumatically connected to the second one of the pneumatic console ports when the cassette is installed in the cassette opening. Fluid management systems. [Claim 27] 27. The fluid management system of claim 26, wherein the housing comprises first and second substantially parallel walls connected by a peripheral third wall. [Claim 28] the housing has substantially C-shaped sides defining a first arm and a second arm; the first console connector is fixed to the first arm; 27. The fluid management system of claim 26, wherein the second console connector is secured to the second arm. [Claim 29] each of the first pneumatic connector port and the second pneumatic connector port being defined by an opening in the first console connector and an opening in the second console connector for receiving a port tube defining the pneumatic console port; 27. The fluid management system of claim 26, wherein the first console connector and the second console connector each further comprise a seal for sealingly engaging the port tube. [Claim 30] 27. The fluid management system of claim 26, wherein the first console connector and the second console connector each include a seal for pneumatically sealingly engaging the pneumatic console port of the console. [Claim 31] 31. The fluid management system of claim 30, wherein the first console connector and the second console connector each include a two-way valve having a closed state when the cassette is not disposed within the console. [Claim 32] 32. The fluid management system of claim 31, wherein the two-way valve is formed from a polymeric material, the two-way valve comprising a dome having a slit therethrough. [Claim 33] 33. The fluid management system of claim 32, wherein the two-way valve and the seal are integrally formed from the polymer material. [Claim 34] 27. The fluid management system of claim 26, wherein the housing comprises a window disposed above the third fluid path for receiving a path restriction means. [Claim 35] a liquid stop connector; The liquid stop connector is a reservoir disposed within the housing between the third fluid path and the fifth fluid path; a normally open one-way valve disposed between the third fluid path and the reservoir; 27. The fluid management system of claim 26, comprising: [Claim 36] a pipe disposed within the third fluid path and constituting a part of the third fluid path; the reservoir is disposed between the pipe and the fifth fluid path; 36. The fluid management system of claim 35, wherein the one-way valve is disposed between the pipe and the reservoir. [Claim 37] The one-way valve is constituted by a ball check valve, 36. The fluid management system of claim 35, wherein the ball of the ball check valve is biased to an open position by gravity in an installed orientation and is configured to be forced upward to a closed position by one of impact with liquid from the third fluid path and an increase in fluid pressure in the third fluid path relative to the fluid pressure in the fifth fluid path. [Claim 38] the reservoir has a sloped floor above the ball check valve that tapers toward the ball check valve; 38. The fluid management system of claim 37, wherein the sloped floor defines a liquid flow path in the installed orientation that directs flow from the reservoir to the ball check valve and back to the third fluid path past the ball check valve in the open position. [Claim 39] 39. The fluid management system of claim 38, wherein the reservoir comprises a baffle wall positioned horizontally between the ball check valve and the fifth fluid path. [Claim 40] 40. The fluid management system of claim 39, wherein the baffle wall has a lower end that defines a liquid return gap between the baffle wall and the sloped floor, and an upper end that engages a cover of the reservoir. [Claim 41] the cassette further comprises a handpiece connector connected to a second end of the second fluid path and a first end of the third fluid path; 27. The fluid management system of claim 26, wherein the handpiece connector forms part of each of the second and third fluid paths. [Claim 42] 27. The fluid management system of claim 26, wherein the first fluid path comprises an IV bag connector. [Claim 43] 27. The fluid management system of claim 26, wherein the fifth fluid path comprises a liquid blocking filter. [Claim 44] 27. The fluid management system of claim 26, wherein the infusion portion of the pump comprises compressible peristaltic pump tubing disposed outside the housing. [Claim 45] each of the first console connector and the second console connector comprises a substantially rigid housing having a receiving tube that engages the peristaltic pump tube; the receiving tube defines a portion of one of the first fluid path and the second fluid path; each of the first console connector and the second console connector is formed within the housing; 45. The fluid management system of claim 44, wherein the first console connector and the second console connector each include an opening and a tube therethrough, and a seal disposed within the opening. [Claim 46] further comprising a two-way valve in each of the first console connector and the second console connector; 46. ​​The fluid management system of claim 45, wherein the two-way valve is in a closed state when the cassette is not disposed within a console. [Claim 47] 27. The fluid management system of claim 26, wherein the plurality of fluid paths disposed within the housing are at least partially formed by flexible tubing, the housing having an interior support wall along which the flexible tubing is disposed. [Claim 48] the supply fluid container; the handpiece; the waste container; 27. The fluid management system of claim 26, further comprising: [Claim 49] 1. A method of using a surgical irrigation cassette, comprising: The surgical irrigation cassette comprises: a substantially rigid housing defining a chamber therein; a compressible peristaltic pump tube disposed outside the housing; a plurality of fluid paths disposed at least partially within the chamber; 、 and the plurality of fluid paths include a first fluid path, a second fluid path, a third fluid path, a fourth fluid path, and a fifth fluid path; the first fluid path has a first end connected to a first end of the peristaltic pump tubing and a second end connected to a supply fluid container; the second fluid path has a first end connected to the second end of the peristaltic pump tubing and a second end connected to a handpiece; the third fluid path has a first end connected to the handpiece and a second end connected to a waste container; the fourth fluid path has a first end connected to a first console connector secured to the housing and a second end connected to the waste container; the fifth fluid path has a first end connected to the third fluid path and a second end connected to a second console connector secured to the housing; The method comprises: providing the surgical irrigation cassette; inserting the cassette into a control console that includes or is connected to a vacuum source; connecting a second end of the first fluid path to the supply fluid container; connecting a second end of the second fluid path to the handpiece; connecting a first end of the third fluid path to the handpiece; connecting a second end of the third fluid path to the waste container; connecting a second end of the fourth fluid path to the waste container; A method of using a surgical irrigation cassette, comprising: [Claim 50] 50. The method of using a surgical irrigation cassette of claim 49, wherein pump rollers are selectively engaged with the peristaltic pump tubing, such engagement moving fluid from the supply fluid container to the handpiece. [Claim 51] 50. The method of using a surgical irrigation cassette of claim 49, further comprising the step of selectively adjusting the vacuum source to adjust vacuum pressure at the handpiece. [Claim 52] providing an aspiration manifold between the vacuum source and the cassette, the aspiration manifold being fluidly connected to the vacuum source, atmosphere, the first console connector, and the second console connector; selectively connecting the fifth fluid path to atmosphere via the suction manifold; 50. A method of using the surgical irrigation cassette of claim 49, further comprising: [Claim 53] 53. The method of using a surgical irrigation cassette of claim 52, further comprising the step of connecting the fifth fluid path to atmosphere in response to an increase in vacuum sensed at the handpiece reaching a predetermined threshold.

Claims

1. 1. A surgical irrigation cassette comprising: a substantially rigid cassette housing having a console connector; The infusion part of the pump; a fluid intake path at least partially disposed in the cassette housing; a fluid delivery path at least partially disposed in the cassette housing; a fluid drainage path at least partially disposed in the cassette housing; a pressure relief path at least partially disposed in the cassette housing; Equipped with the console connector includes a pneumatic connector port that is pneumatically connected to a pneumatic port tube of the console when the surgical irrigation cassette is installed in a cassette opening of the console; the infusion portion of the pump comprises a suction side of the pump and a discharge side of the pump; the fluid intake path having a first end connected to a suction side of the pump and a second end connected to a supply fluid container; the fluid delivery path having a first end connected to a delivery side of the pump and a second end connected to a handpiece; the fluid discharge path having a first end connected to the handpiece and a second end connected to a waste container; The surgical irrigation cassette comprises a pressure relief path having a first end connected to the fluid exhaust path and a second end connected to the console connector.

2. the cassette housing having substantially C-shaped sides defining a first arm and a second arm; The surgical irrigation cassette of claim 1 , wherein the console connector is secured to the second arm.

3. 3. The surgical irrigation cassette of claim 1, wherein the console connector comprises a two-way valve having a closed state when the console connector does not receive the pneumatic port tubing of the console.

4. The surgical irrigation cassette of claim 3 , wherein the two-way valve is formed from a polymeric material and has a concave shape in external view and a slit therethrough.

5. 5. The surgical irrigation cassette of claim 1, wherein the cassette housing includes a window positioned above one of the pathways for receiving a pathway restrictor means from the console when the surgical irrigation cassette is positioned within the console.

6. The surgical irrigation cassette of claim 5 , wherein the window is located above the fluid drainage path.

7. a liquid stop connector; The liquid stop connector is a reservoir disposed within the cassette housing between the fluid exhaust path and the pressure relief path; a normally open one-way valve disposed between the fluid discharge path and the reservoir; 7. The surgical irrigation cassette of claim 1, comprising:

8. the normally open one-way valve is a ball check valve, 8. The surgical irrigation cassette of claim 7, wherein the ball of the ball check valve is biased to an open position by gravity in an installed orientation and is configured to be urged upward to a closed position by one of impact with liquid from the fluid discharge path and an increase in fluid pressure in the fluid discharge path relative to the fluid pressure in the pressure relief path.

9. the reservoir has a sloped floor above the ball check valve that tapers toward the ball check valve; 9. The surgical irrigation cassette of claim 8, wherein the sloped floor defines a liquid flow path in the installed orientation that directs flow from the reservoir to the ball check valve and back to the fluid drain path past the ball check valve in the open position.

10. The surgical irrigation cassette of claim 9, wherein the reservoir includes a baffle wall positioned horizontally between the ball check valve and the connection to the pressure relief path.

11. The surgical irrigation cassette of claim 10, wherein the baffle wall has a lower end that defines a liquid return gap between the baffle wall and the sloped floor, and an upper end that engages a cover of the reservoir.

12. 1. A fluid management system comprising: A surgical irrigation cassette according to any one of claims 1 to 11; a console defining a cassette opening for receiving the surgical irrigation cassette and having the pneumatic port tube therein; Equipped with The fluid management system, wherein the console includes a variable flow relief valve configured to connect a second end of the pressure relief path to atmosphere.

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