System and method for improving control response property during suction

Abstract

To provide a suction system for controlling a suction pressure on an ultrasonic wave surgery handpiece, for improving control response property during suction.SOLUTION: A suction system 42 comprises a console 20 including a suction pump 74, and has a joint 44 for dividing a suction channel 40 into at least two channels. A first joint port is connected to a first channel 450. A second channel 452 is connected to a second joint port, a third channel 454 is connected to a third joint port, and a fourth channel 456 is connected to a port 448 of a container for surgery waste. A first sensor 48 senses a pressure on the fourth channel and supplies a waste container pressure signal. A second sensor 57 senses a pressure on the third channel and supplies a tip end pressure signal. The controller 102 controls respectively, positions of a first ventilation valve 54 and a second ventilation valve 60, on the basis of the waste container pressure signal and the tip end pressure signal.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application is a continuation of U.S. patent application 62 / 735,485, filed September 24, 2018. U.S. Patent Application 62 / 749,355, filed October 23, 2018, April 2019 U.S. Patent Application No. 62 / 835,224, filed on May 17, 2019, and This application claims priority to U.S. patent application Ser. No. 62 / 847,545, all of which are incorporated herein by reference. No. 6,399,433, which is incorporated herein in its entirety.

[0002] The present disclosure generally relates to an aspiration system and method for use with an ultrasonic surgical handpiece. Regarding the law. Summary of the Invention [Means for solving the problem]

[0003] One aspect of the present disclosure is an aspiration system for controlling aspiration pressure in an ultrasonic surgical handpiece. The system includes a suction pump and a surgical handpiece connector. The system includes a surgical handpiece connector and a suction pump. The suction passage extends generally through the first connector, the second connector, and The joint includes a joint between the surgical handpiece connector and the first connector. The first sensor is connected to the second connector. and the suction pump. is configured to monitor the waste container pressure and provide a waste container pressure signal. The first vent valve is connected to a first portion of the suction passage. The second vent valve is connected to a second portion of the suction passage. The second portion of the suction passage is connected to the terminal end of the second portion of the suction passage beginning at the junction. The second sensor is connected to the second portion of the suction passage and is connected to the tip of the ultrasonic surgical handpiece. The controller is configured to monitor the coupled aspiration pressure to provide a tip pressure signal. The controller controls the position of the first vent valve based on the waste container pressure signal and and configured to control a position of the second vent valve based on the end pressure signal.

[0004] A method for controlling the suction level of an ultrasonic surgical handpiece is provided. Driving the aspiration pump to generate suction pressure in the aspiration system, i.e., the surgical handpiece The method includes the step of generating a suction pressure in the connector. The surgical waste is guided through the suction passage connection. The first sensor detects a first suction pressure. The sensor is disposed along a first portion of the aspiration passageway extending between the waste container connector and the aspiration pump. The first vent valve is connected to the first portion of the suction passage. The method includes the steps of generating a waste container pressure signal and connecting a surgical handpiece connector and a a second sensor disposed along a second portion of the suction passage extending between the first and second vent valves; and generating a tip pressure signal. The method includes controlling the position of a first vent valve based on a waste container pressure signal. and controlling a position of a second vent valve based on the tip pressure signal. Contains.

[0005] Another aspect of the present disclosure is an aspiration system for controlling aspiration pressure in an ultrasonic surgical handpiece. The system includes a suction pump and a surgical handpiece connector. The system includes at least one connector between the surgical handpiece and the aspiration pump. The suction passageway extends partially through the surgical waste container. The surgical handpiece connector and the first connector include a second connector. A joint is provided between the suction passage and the at least two flow paths. The first vent valve is disposed between the waste container connector and the suction pump. The first part of the suction passage is connected to the second vent valve, which starts from the joint. The pressure in the first portion of the suction passage is connected to the end of the second portion of the suction passage. The position of the first vent valve and the second vent valve are adjusted so as to be higher than the pressure in the second portion of the draw passage. A controller configured to control the position of the vent valve to maintain the pressure differential. It is being done.

[0006] Yet another aspect of the present disclosure is an aspiration device for controlling aspiration pressure in an ultrasonic surgical handpiece. The system includes a suction pump. The suction passage is provided with an ultrasonic handpiece. The aspiration passage extends at least partially between the surgical handpiece and the aspiration pump. The first connector, the second connector, and an ultrasonic surgical handpiece are disposed in fluid communication with each other. A joint between the surgical handpiece connector and the second connector configured to be placed The joint divides the suction passage into at least two lines. The first vent valve is disposed in a first portion of the suction passage between the first connector and the suction pump. The second vent valve is connected to the joint. The system is connected to an end of a second portion of the suction passage that extends along the suction passage at a position The system includes a first sensor, a second sensor, and a first input signal received from the first sensor. and determining a first flow rate based on a second input signal received from a second sensor. and a controller configured to determine a second flow rate using the The roller further outputs a tip clog signal based on the first flow rate and the second flow rate. and configured to control the aspiration pump based on the tip clog signal.

[0007] Yet another method for controlling aspiration pressure in an ultrasonic surgical handpiece is provided. The method includes the step of driving a suction pump to generate suction pressure in the suction system. The first sensor is located at a first portion of the suction passage between the first connector and the suction pump. The first vent valve is connected to the first portion of the suction passage. The first sensor senses a first suction pressure. The second sensor senses a first suction pressure starting from the joint. The joint is connected to the second portion of the suction passage. The joint separates the suction passage into at least two lines. The second sensor is connected to the intake passage and extends along the intake passage to the second vent valve. The method further comprises sensing a first input received from the first sensor. The method includes generating a second input signal from a second sensor. The method includes determining a first flow rate and a second flow rate based on a first input signal and a second input signal. The method further includes determining the first flow rate and the second flow rate. outputting a tip clogging signal based on the tip clogging signal; and controlling the suction pump based on the tip clogging signal. and controlling the

[0008] Other aspects of the present disclosure include an ultrasonic surgical handpiece, an aspiration pump, an ultrasonic surgical handpiece, a suction system having a suction passage extending at least partially between the base and the suction pump. A first connector, a second connector, and a surgical handpiece connector port. A joint is provided between the first connector and the second connector. The joint reduces the suction passage. The first vent valve is connected to the first part of the suction passage. The first portion is located between the first connector and the suction pump. The suction passage extends along the suction passage from the joint to the second vent valve. The first sensor is connected to the first portion of the suction passage. and a second sensor connected to the second portion of the suction passage. The system also includes a first determining a first flow rate based on a first input signal received from the first sensor and determining a second flow rate based on a second input signal received from the and controlling a suction pump based on the tip clogging signal. Contains a controller configured for

[0009] Yet another aspect of the present disclosure is a method for controlling aspiration pressure in an ultrasonic surgical handpiece. The present invention provides a suction system that improves control response during operation of a suction pump. a surgical waste container having a first surgical waste container port and a second surgical waste container port; a vessel, a first joint port, a second joint port, and a third joint port; The first joint port is a joint port defining a first joint port and a console including a first joint port. The ultrasonic surgical handpiece is connected to a first flow path extending from the first flow path. The third flow path is connected to the joint port of the second flow path and the first surgical waste container port. The fourth flow path is connected to the second surgical waste container port. The first sensor is disposed to sense a pressure in the fourth flow path. and configured to monitor a waste container pressure to provide a waste container pressure signal. The second sensor is disposed to sense pressure in the third flow path and a tip pressure signal for sensing aspiration pressure associated with a tip of an ultrasonic surgical handpiece; The first vent valve is connected to the fourth flow path. The vent valve is connected to a third flow path. The system also includes a waste container pressure signal. and controlling the position of a first vent valve based on the tip pressure signal and controlling the position of a second vent valve based on the tip pressure signal. The controller is configured to control the position of the vent valve of the suction pump. The pump is connected to the fourth flow path.

[0010] Another method is provided for controlling the aspiration system to improve control responsiveness during surgery. The suction system includes a suction pump, ultrasonic surgical handpiece, surgical waste container, clean The system also includes a clean side flow path, a dirty side flow path, and a a fluid backflow device communicating with the dirty side flow path; and a clean side vent communicating with the dirty side flow path. The clean side flow path is disposed between the suction pump and the surgical waste container. The dirty side flow path is disposed between the ultrasonic surgical handpiece and the fluid reflux device. The method includes the steps of sensing a first pressure in the dirty side flow path and sensing a second pressure in the side flow path; and determining whether or not the fluid is backflowing based on the first pressure. and controlling a clean side vent mechanism based on the second pressure. It is equipped with a.

[0011] Yet another aspect of the present disclosure is a method for controlling aspiration pressure in an ultrasonic surgical handpiece. The present invention provides a suction system that improves control response during operation. The system includes a suction pump, Ultrasonic surgical handpiece, surgical waste container, clean side flow path, and dirty side The console includes a flow path. The clean side flow path is for the suction pump and surgical waste. A fluid backflow device communicating with the clean side flow path and a darte A clean side vent mechanism is provided in communication with the dirty side flow passage. is disposed between the ultrasonic surgical handpiece and the fluid reflux device.

[0012] Yet another aspect of the present disclosure is a method for controlling aspiration pressure in an ultrasonic surgical handpiece. The present invention provides an aspiration system for ultrasonic surgery, which improves control response during operation. The handpiece includes a console fluidly connected to the handpiece. The console includes a controller, A suction pump, a first sensor, a fluid backflow device, a second sensor, and a clean side vent mechanism The controller determines a clean side based on an input signal from the first sensor. A vent mechanism is controlled and a fluid backflow device is controlled based on an input signal from a second sensor. The device is configured to control the

[0013] Yet another aspect of the present disclosure is a method for controlling aspiration pressure in an ultrasonic surgical handpiece. The present invention provides an aspiration system for ultrasonic surgery, which improves control response during operation. The handpiece includes a console fluidly connected to the handpiece. The console includes a controller, The system includes a suction pump, a first ventilation mechanism, and a second ventilation mechanism. The controller is configured to be placed in communication with a waste container. and controlling a first vent mechanism in response to aspiration of liquid or solid material through the handpiece. and controlling a second vent mechanism to maintain a desired pressure in the surgical waste container. It is structured as follows: [Brief description of the drawings]

[0014] Referring now to the drawings, an exemplary embodiment is shown in detail. While the drawings are not necessarily to scale, they are intended to illustrate, but are not to scale, the novel aspects of the illustrative embodiments. For purposes of illustration and explanation, certain features may be emphasized. The exemplary figures are intended to cover the exact configurations and configurations shown in the drawings and described in detail below. is not intended to be exhaustive or to limit or restrict the scope of the present disclosure.

[0015] Advantages of the present disclosure may be better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings, in which: will be easily understood, just as it will be better understood by

[0016] [Figure 1] 1 illustrates certain components of an aspiration system, including an ultrasonic surgical handpiece and a control console. [Diagram 2] FIG. 1 is a schematic diagram of components of an aspiration system for removing irrigation fluid and surgical waste from a surgical site, according to one example. [Diagram 3]1 illustrates certain components of a suction system that distinguish between the clean and dirty sides of a flow path, according to one example. [Figure 4] FIG. 1 is an exploded view of a cassette containing tubing for the aspiration and irrigation systems. [Figure 5A] FIG. 2 is a diagram of an assembled cassette, according to an example. [Figure 5B] FIG. 1 illustrates an assembled cassette inserted into a control console, according to an example. [Figure 6] 13 shows a cross section of the cassette and the pinch valve of the console aligned with a portion of the aspiration passage of the system. [Figure 7A] FIG. 1 is a perspective view of certain internal components of the aspiration system within the console, including pinch valves. [Figure 7B] FIG. 13 is another perspective view of the internal components of the aspiration system within the console, including the controller and the aspiration manifold. [Figure 7C] FIG. 1 is a close-up view of the suction manifold of the suction system in the console. [Figure 8] FIG. 1 is an overhead view of the intake manifold showing the pressure sensors and their connections to the intake passages. [Figure 9] FIG. 1 is a circuit diagram of an exemplary pressure sensor. [Figure 10] FIG. 2 is a block diagram of a control system including a first PID control loop and a second PID control loop used to regulate the first and second vent valves of the aspiration system of FIG. 1. [Figure 11] 1 is a graphical representation of target pressure and actual pressure at various points in the aspiration passage based on various aspiration set points. [Figure 12] FIG. 1 is a schematic diagram of an aspiration system using electrical schematic connections to represent air resistance as an example. [Figure 13] As an example, an operating routine implemented by an aspiration system that determines whether a clog has been detected in an ultrasonic surgical handpiece is shown. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] I. System Overview FIG. 1 illustrates certain components of the suction system 42. The suction system 42 includes: Although described for use with ultrasonic surgical handpiece 28 and console 20, In certain configurations, by mechanical means such as powered burs, drills and saws. The ultrasonic surgical handpiece 28 may also be used with other handpieces that operate with the ultrasonic surgical handpiece 28. The ultrasonic surgical handpiece includes an ultrasonic surgical handpiece tip 30 that applies aspira- tion to the surgical site. It is understood that any form of material from the surgical site is included. For example, ultrasonic surgical instruments Handpiece 28 is an ultrasonic surgical handpiece that passes through the handpiece to remove liquids and solids from the surgical site. In addition, unless otherwise specified, "proximal" refers to the 30, and "distal" is understood to mean toward the surgical handpiece tip 30. This should be understood to mean moving away from 30.

[0018] Aspiration system 42 includes a controller that provides electrical power and suction to ultrasonic surgical handpiece 28. The console 20 can be used to control the amount of power, cleaning, suction, or a combination thereof. The console 20 also includes a display 22 for displaying the alignment. When the handpiece 28 is powered on, the surgical handpiece tip 30 is actively A foot pedal 32, hand switch, or any other control device that controls whether or not the device vibrates. The power supply may be connected to a power supply unit.

[0019] The aspiration system 42, according to one configuration, includes an aspiration pump 74, a cassette 34, and an ultrasonic The surgical console 20 includes a surgical handpiece 28. The stem 42 may be connected to a surgical console 20, a suction pump 74, a surgical waste container 70, or other waste container, cassette 34, and ultrasonic surgical handpiece 28.

[0020] FIG. 2 illustrates the components of an aspiration system 42, which removes irrigation fluids and surgical waste from the surgical site. FIG. 1 is a schematic diagram of the components of the console 20, the surgical waste container 70, the cassette 34, and / or the Alternatively, ultrasonic surgical handpiece 28 may include any number of ports / connectors and may have multiple components. For example, ultrasonic surgical handpiece 28 may include , and ultrasonic surgical handpiece connector 26. The components are connected together with various tubes or lines to form a suction passageway 40. The suction pump 74 creates a suction pressure throughout the suction passage 40, which Most surgical waste and irrigation fluids in the form of liquids, gases, solids or combinations thereof is passed through the suction passageway 40 and ultimately into the surgical waste container 70.

[0021] The cassette 34 may include a portion of the line with the suction passage 40. When the cassette 34 is inserted into the console 20, the cassette 34 and the console 20 are 0, a first port 95, a second port 96, and a third port of the suction manifold 36; 98, as shown in FIG. 2, a plurality of lines of suction passages 40 are aligned with the ultrasonic surgical hub. The end piece 28, the pinch valve 62, and the filter 72 extend to each port. The surgical handpiece tip 30 is connected to a waste line 38. 38 extends from the surgical handpiece tip 30 to a joint 44 in the cassette 34. The joint 44 divides the suction passage 40 into at least two flow paths, as shown in FIG. It is understood that lines are described as tubes and / or flow paths unless otherwise specified. It should be understood that the joint 44 may include a fluid backflow device 462. 462 allows air to pass through but prevents surgical waste or aspirated fluids from entering the fluid reflux device. Do not extend beyond 462 into any portion of the suction passage 40 .

[0022] In one configuration, the joint 44 includes a first joint port 440, a second joint port 441, and a The surgical waste container 70 includes a first joint port 442 and a third joint port 444. includes a first surgical waste container port 446 and a second surgical waste container port 448. The first surgical waste container connector 82 is connected to the first surgical waste container port 446. and a second surgical waste container connector 66 is connected to a second surgical waste container port 448. This is being continued.

[0023] The multiple flow paths of the suction passage 40 include a joint 44, a surgical waste container 70, and a suction pump. 74. The first joint port 440 is for ultrasonic surgery. The first flow path 450 is connected to the handpiece 28. The second flow path 452 is connected to the second joint port 442 and the first surgical waste container port 446 The third flow passage 454 is connected to the third joint port 444, and the fourth flow passage 456 is , connected to a second surgical waste container port 448. A fourth flow path 456 is connected to a second surgical waste container port 448. The surgical waste container port 448 extends at least partially to the suction pump 74 .

[0024] In other words, the suction passage 40 can be divided into three parts. The portion 40a is disposed between the second surgical waste container connector 66 and the suction pump 74. The second portion 40b of the suction passage 40 starts at the joint 44 and leads to a second vent valve. The second vent valve 60 extends along the suction passage 40 to the second vent valve 60, which will be described below. The first part of the suction passage 40 can be used to open the suction passage 40 to the atmosphere. The third portion 40c extends from the joint 44 to the first surgical waste container connector 82 at least is also partially extended.

[0025] Unless otherwise noted, the first flow path 450 is associated with the waste line 38 and the second flow path A third passage 452 is associated with the third portion 40c of the suction passage 40, and a third passage 454 is associated with the suction passage a fourth flow passage 456 is associated with the first portion 40b of the suction passage 40; It should be understood that this is related to minute 40a.

[0026] Additionally or alternatively, the suction passage 40 may include two flow paths, a clean side flow path 45 The clean side flow path 458 may be divided into a suction side flow path 458 and a dirty side flow path 460. Located between the pump 74 and the surgical waste container 70. Dirty side flow path 460 is disposed between the ultrasonic surgical handpiece 28 and the fluid reflux device 462. The backflow device 462 is provided in communication with the dirty side flow path 460 and is The air vent mechanism 464 may be provided in communication with the clean side flow path 458. The clean side vent mechanism 464 is a first vent mechanism that includes a first vent valve 54. It should be understood that in some configurations, this system 42 may include a second vent. A second vent mechanism 461 including a valve 60 is provided. The device is implemented to expedite the dissipation of suction pressure by introducing fresh air into the flow path 460. Referring to FIG. 3, the “clean side” contains surgical waste (e.g., tissue and body The "dirty side" contains surgical waste aspirated from the surgical site. The "clean side" is a section between the suction pump 74 (not shown in FIG. 3) and the surgical waste container 70. The "Dirty Side" is a combination of ultrasonic surgical handpieces 28 and fluid reflux devices 463. (not shown in FIG. 3). In other words, in this configuration, the surgical waste container 70 is , which can provide a functional boundary between the clean and dirty sides of the flow path. .

[0027] The third portion 40c and / or the dirty side flow path 46 are connected to the second ventilation mechanism 461. To allow for direct ventilation to the 0, a fluid backflow device 462, gravity, and suction directionality (manual (which tends to keep surgical waste from flowing away from the fluid backflow device 462), and A combination of the dirty side flow passage 460 and the dirty side flow passage 470 may be used. ensures that surgical waste does not contaminate the second vent mechanism 461.

[0028] By providing multiple lines, passages, and / or portions of the suction passage 40, this system The advantage of the stem 42 is the dual regulation of pressure by the first sensor 48 and the second sensor 57. Additionally, another advantage of the system 42 is improved control responsiveness during operation due to blockage detection. The first sensor 48 senses the pressure in the first portion 40a of the suction passage 40. The second sensor 57 is positioned to detect the suction pressure of the waste container. The pressure in the second portion 40b of the guide passage 40 is sensed, and the ultrasonic surgical hand pin is The system 4 is arranged to monitor the suction pressure associated with the tip 30. 2 controls the first vent valve 54 and the second vent valve 55 based on signals from the first and second sensors 48, 57. and a controller 102 for controlling the second vent valve 60. Specifically, the clean side vent mechanism 464 may include the first vent valve 54. The reflux device 462 is connected to a joint 44 including a joint valve or ball valve 86. The first and second ventilation valves 54, 60, when opened, allow the atmosphere or fresh air to enter the system. The suction pressure is then dissipated by introducing the first sensor 48 and the second sensor 57. Dual regulation and jam detection are described in more detail below.

[0029] Dual regulation allows the system 42 to regulate the pressure in the surgical waste container 70 and the pressure at the surgical site. The system 42 regulates the pressure of the ultrasonic surgical handpiece 28 during various operations. Responsiveness, overall wide range of suction control, fine adjustment of suction settings, and optimal suction performance For example, dual regulation (e.g., using a first vent mechanism and a second vent mechanism) Using the suction level, significantly lower suction levels can be achieved, which reduces the " The "suction" force is significantly reduced. This is important to avoid fragile tissue and is safe for the patient and the hands. Provides comfort to the surgeon.

[0030] The ultrasonic surgical handpiece 28 is used to remove liquid and solid materials from the surgical site into the waste stream. When drawn into line 38, surgical waste passes through joint 44 and pinch valve 62. In this configuration, the aspiration passageway 40 is open to the surgical waste container 70 and The force removes surgical waste from the second portion 40b of the suction passageway 40. Port 448 connects to a second surgical waste container connector 66, which is connected to a filter 72. The filter 72 is disposed in a position that, from the console's perspective, separates the surgical waste from the surgical waste. The filter 72 is proximal to the container 70. The filter 72 was not captured by the surgical waste container 70. , designed to remove the remainder of the surgical waste from the second portion 40b of the suction passage 40. The filter 72 may be part of the cassette assembly and / or the tube. The filter 72 can be easily discarded and replaced after surgery. 1. The first port 95 is connected to the console 20 via the USB 201.

[0031] FIG. 4 shows an exploded view of the cassette 34. In one configuration, the cassette is In other words, the cassette 34 itself may be omitted, but the ultrasonic surgical handpiece may be used. The line connecting end piece 28 to surgical waste container 70, as well as joint 44, may be As shown in FIG. 4, the joint 44 may include a ball valve 86, or any The fluid flow control device 462 includes another type of fluid backflow device 462.

[0032] The ball valve 86 / fluid backflow device 462 directs suction from the second portion 40b of the suction passage 40. A third portion 40c of the passageway 40 allows air to pass through the surgical handpiece. No surgical waste or aspiration fluids will enter the second portion 40b of the aspiration passage 40 from the tip 30. The ball valve 86 is a one-way valve that opens and closes the valve by gravity. and is biased to the closed position by the influence of fluid from the third portion 40c of the suction passage 40. The valve is attached so that it is pressed upward by a A chamber 88 is provided distally and passes through a ball valve 86 to a second aspiration passage 40. The chamber 88 has a sloped bottom surface to hold the surgical waste that may enter the portion 40b of the chamber. When the ball of the ball valve 86 returns to its rest position, the tilt of the chamber 88 The bottom surface of the ball valve 86 allows surgical waste to pass through the third portion of the suction passage 40. Instead of a ball valve, any type of valve can be used to allow for suction flow. The flow of fluid in the second portion 40b of the channel 40 may be controlled.

[0033] As shown in FIGS. 4-5B, a cassette 34 is used to insert the cleaning device 30 into the console 20. In this configuration, the cleaning line 9 and the suction line can be arranged more easily. Both 0 and 92, as well as the suction passage 40, are contained within a single cassette 34. In a specific configuration, either the cleaning line 90 / 92 is provided and an ultrasonic surgical handpiece 28 can be connected to a cleaning source 91. In some configurations, the cleaning fluid line is The ultrasonic surgical handpiece connector 26 can be connected to the ultrasonic surgical handpiece connector 26 via the connector 34. By including both the ultrasonic aspirator line and the suction line in the same cassette 34, This simplifies the setup and operation of the cassette 34. For example, misalignment of the pinch valve 62 with respect to the suction passage 40 may occur. This avoids possible user errors.

[0034] 5A and 5B are diagrams of cassette 34. The user may use one hand for a single movement. In one operation, the cassette 34 is inserted into the console 20. This single action is completed. The cassette RFID (radio frequency identification) tag 94 is This indicates that the cassette 34 is fully inserted. Once the cassette 34 is inserted and aligned, the pinch valve 62 can be actuated. When the pinch valve 62 is actuated, the third portion of the suction passage 40 held in the cassette 34 Compress the 40c tube.

[0035] As shown in FIGS. 7A and 7B, the console 20 is provided with a cassette release button 500. The cassette socket 76 responds to depression of the cassette release button 500. One or more sensors, such as a Hall effect sensor, magnetic sensor, or other suitable sensor, that generate a signal based on the In this configuration, the cassette release button may include a sensor on the cassette release button as shown in FIG. The cassette socket 76 includes a magnet 93 and a Hall effect sensor 89. The magnet 93 is connected to the cassette 34. This helps detect when the cassette 34 is inserted and / or ejected. When the release button 500 is pressed down, as the magnet 93 approaches the Hall effect sensor 89 , helps detect when the cassette 34 is about to be ejected. In response, the system The system 42, the controller 102, and / or the PCBA 99 may be Before ejecting the cassette 34, open the pinch valve 62. This ensures that the cassette 34 is ejected properly. We guarantee that:

[0036] The cassette housing 84 is aligned with the pinch valve 62 as shown in FIG. The upper portion of the tube that defines the third portion 40c of the passageway 40 includes an opening 85. As shown in FIG. 5B, when the cassette 34 is inserted into the console 20, the cassette housing The opening 85 of 84 is disposed adjacent to the pinch valve 63. As shown in FIG. When the valve is actuated, the rod 172 is used to pinch the third portion 40C of the suction passage 40. The pinch valve 62 prevents suction pressure from reaching the tip 30 of the ultrasonic surgical handpiece. More specifically, the pinch valve 62 is disposed at the distal end of the ultrasonic surgical handpiece 30. By ensuring a high response cutoff of the suction pressure in the suction passage 40, affect.

[0037] The console 20 also includes a three-way solenoid valve 64, as shown in FIG. 7A. A three-way solenoid valve 64 controls the operation of the pinch valve 62. The three-way solenoid valve 64 couples the suction pump 40 through the first portion 40a of the suction passage 40. 74. The suction system 42 is activated to draw blood into the surgical handpiece tip 30. Once the surgical waste has been removed, the pinch valve 62 is closed by a three-way solenoid valve 64. In this configuration, the pinch valve 62 is pneumatic and has a three-way solenoid. The solenoid valve 64 is opened and closed by moving the solenoid. The suction pressure is applied to the coil 170, rod 172, gasket 174 and pump of the pinch valve 62. The head 110 can be engaged with the mechanical actuator 100. In the , the pinch valve 62 is electrically actuated and the 3-way solenoid valve 64 is not required. .

[0038] With respect to the pinch valve 62 and the three-way solenoid valve 64, the suction system 42 is It can operate in one or more modes, including quasi-mode and synchronous mode. Standard mode In the figure, the pinch valve 62 and the three-way solenoid valve 64 control the surgical handpiece 28. It operates in the same manner whether or not the foot pedal 32 is depressed to activate it. 20 In standard mode, the ultrasonic surgical handpiece In standard mode, suction is provided at the tip 30 of the catheter. connects the surgical handpiece tip 30 openly to a surgical waste container 70 and a suction pump 74 When the pinch valve 62 is in the stationary state, the pinch valve 62 remains stationary.

[0039] Specifically, in standard mode, the three-way solenoid valve 64 is always open to the atmosphere. 40. This allows the suction pressure to flow through the surgical handpiece. The catheter tip 30 is then reached to allow suction at the surgical site. For an integrated suction system, the system 42 includes a three-way solenoid valve 64 or a pinch valve. It can be manufactured without B62.

[0040] The second potential operating mode for aspiration is the synchronous mode. When the hand pedal 32 is not depressed and the surgical handpiece tip 30 is vibrating, the suction Vacuum pressure is not permitted to reach the surgical site. Specifically, when the foot pedal 32 is depressed, When the ultrasonic surgical handpiece tip 30 is not vibrating, the pinch valve 6 2 is in an operational state and the connection between the surgical handpiece tip 30 and the aspiration pump 74 is blocked. The pinch valve 62 is actuated by a three-way solenoid valve 64. When the pedal 32 is not depressed, the solenoid of the three-way solenoid valve 64 moves 3, and pinch valve 62 is closed to the atmosphere and open to the suction pump 40. This prevents suction pressure from reaching the surgical handpiece tip 30 and the surgical site. When the foot pedal 32 is not depressed, the second vent valve 60 is also open to the atmosphere. suction pressure at the surgical site is rapidly relieved.

[0041] In the synchronous mode, the aspiration system 42 is activated when the foot pedal 32 is depressed for ultrasonic surgery. When the handpiece 28 is operated, it functions in the same manner as in the standard mode described above. If the suction valve 62 is in a stationary state, when the foot pedal 32 is depressed, the suction passage 4 0 provides communication between the ultrasonic surgical handpiece tip 30 and the aspiration pump 74.

[0042] The suction pump 74 selectively supplies the pinch valve 62 with air via the three-way solenoid valve 64. The pinch valve 62 is connected to the cassette 34 as shown in FIGS. 7A and 7B. In this configuration, the suction pump 74 is connected to a socket 76 of the suction pump 74. Uses a dual diaphragm design that keeps the element separated from the pumped air The two diaphragms also rotate in a single stroke. It provides twice the air flow of the ram and allows the suction pump 74 to operate at a slower speed. Additionally, in this configuration, the pump head 110 has a positive effect on reducing mechanical pumping noise. As shown in FIG. 5, the pump heads 110 are arranged in series to Shorten the length of the suction passage 40. Shortening the length of the tubing near the suction pump 74 reduces the This limits the possibility of the tube vibrating and creating unwanted noise.

[0043] FIG. 7B illustrates a schematic diagram of a first vent valve 54, a second vent valve 60, and a controller 102. FIG. 7B also shows the suction manifold 36 with the cassette 34 inserted. 7B, the cassette 3 is inserted into the cassette socket 76. The fourth socket 76 includes an opening for the pinch valve 62. When properly inserted, an opening 85 in the cassette housing 84 matches an opening in the socket 76. , allowing the pinch valve 62 to engage the line of the suction passage 40.

[0044] 7C and 8 are alternative enlarged views of the suction manifold 36. 36 includes a first sensor 48, a second sensor 57, a first ventilation valve 54, a second ventilation valve In this configuration, the differential pressure sensor 50a and the printed circuit board 102 are The first sensor 48, which includes a gauge pressure sensor 52a, detects a first pressure in the surgical waste container 70. A first suction pressure 180 is determined, and a measured waste container pressure signal 1 is generated based on the first suction pressure 180. Similarly, the differential pressure sensor 50b and the gauge pressure sensor 52 can be used to generate the A second sensor 57 including a second sensor 58 determines and measures a second suction pressure 182 at the surgical site. 133. Both of these signals can be used to generate a measured tip pressure signal 133. In this embodiment, the controller 102 is a printed circuit board 102. 54 and the second vent valve 60.

[0045] The suction manifold 36 connects the suction pump 74 to the suction passages 40 and the pinch valves 62. Differential pressure sensors 50a, 50b are used to measure the pressure of the first suction passage 40. The pressure or flow rate in the first portion 40a and the second portion 40b can be monitored. Additionally or alternatively, gauge pressure sensors 52a, 52b may be used to measure the pressure in the first portion 40a and The pressure in the second portion 40b can be monitored. The manifold 104 includes the first vent valve 54 and the muffler 56 as well as any other valves and mufflers. By operating the vent to the atmosphere via the second vent valve 60, the suction passage 4 is opened. 0 in the first portion 40a and the second portion 40b.

[0046] The main muffler 106 shown in FIGS. 7A to 7C is a muffler for absorbing the pumping exhaust from the suction pump 74. Reduce noise. Pulsating exhaust is one of the biggest noise sources in the system. In this configuration, the mechanical actuator 100 has a large cross-sectional flow path and This allows the suction pressure in the lubricant 62 to be quickly released to the atmosphere. This allows valve 62 to quickly return to its open position.

[0047] 9 is a circuit diagram of an exemplary pressure sensor. In this example, a 15 PSI sensor is The suction passage 40 is connected to the differential pressure sensors 50a, 50b and the This can be done using the pressure sensors 52a and 52b. 57 outputs a voltage representative of pressure. The voltage signal has an adjustable gain in this configuration. The sensed signal is then fed to amplifier 120, which is a differential operational amplifier. The signal passes through a low-pass filter 122 that reduces noise. 122 includes a capacitor 123 and a resistor 124. Finally, the signal is passed through a rectifier 12 5 to generate a correction signal. The correction signal is also processed by the controller 102. The processing of the sensed signal is shown to use specific hardware. However, it may be performed using general-purpose hardware and software.

[0048] II. Double adjustment In order to improve control responsiveness during aspiration, the console 20, and more specifically, the aspiration manifold The hold 36 includes a first vent valve 54, a first sensor 48, a second vent valve 60, and and a second sensor 57. As described above, the first vent valve 54 is The first vent valve 54 may be associated with a side vent mechanism. A second vent valve 60 is disposed along the first portion 40a of the suction passage 40. 40b, or at a proximal point of the fluid backflow device 462, to adjust the aspiration system 42. do.

[0049] The console 20 may include a controller 102. 8, 57 are connected to the controller 102 to provide dual regulation of the system 42. The controller 102 controls the first and second vent valves 54, 60 to control the suction system 4. 2. More specifically, the controller 102 is a first ventilation valve based on the output of the first sensor 48 and the second sensor 57. 54 and the position of the second vent valve 60 are configured to be independently controlled. There are.

[0050] Adjustments to both the first vent valve 54 and the second vent valve 60 may be made to provide a desired level of ventilation at the surgical site. In this configuration, the first vent valve 54 and the second vent valve 55 are The Vent Valve 60 is a variable flow iDP (intelligent diagnostic positioner) valve. The airflow through the first vent valve 54 and the second vent valve 40 is controlled by the controller. A first PID (proportional integral derivative) control loop 126 and a second PID control loop 127 of the controller 102 The first and second PID control loops 126, 128 are proportional to the current. 28 is explained in more detail below.

[0051] The first sensor 48 is disposed along the first portion 40a of the suction passageway 40 and detects surgical waste. It effectively senses the pressure in the vessel 70. It also provides faster and more responsive control. To this end, the second sensor 57 and the second vent valve 60 are connected to the second portion 40b of the suction passage 40. Included along the.

[0052] In this configuration, the first sensor 48 is a differential pressure sensor 50a and / or a gauge pressure sensor 52. In alternative configurations, various types of pressure sensors may be used. The measurement from the first sensor 48 is sent to the controller 102 to control the first ventilation. Controlling the valve 54 to selectively open the first portion 40a of the suction passage 40 to the atmosphere , is used to generate a first input signal 232. The first input signal is a first suction pressure 180. Additionally or alternatively, the first input signal 232 may be based on a measured In another configuration, the first input signal 232 may be a discard container pressure signal 132. , may be based on the maximum first ventilation current 156 or the first ventilation current 164.

[0053] Based on the signal provided by the first sensor 48, the first vent valve 54 opens the air to the atmosphere. This may be arranged to open the suction passage 40 to the second ventilation valve. The tip 30 of the ultrasonic surgical handpiece 28 is caused to open by the opening of the valve 60. Even if the response speed is slower than the decrease in the suction pressure in the first portion 40a of the suction passage 40, and ultimately reduces the suction pressure throughout the suction passage 40. The first vent valve 54 , may be a variable valve that is mechanically, electrically or pneumatically operated.

[0054] A first sensor 48 and a first vent are disposed along the first portion 40a of the suction passage 40. The combination of valves 54 helps control the suction pressure at the surgical site. The control provided by the first vent valve 54 provides access to a large volume surgical waste container 70, a suction The first portion 40a of the drawing passage 40 and the third portion 40c of the suction passage 40 form a system. The first portion 4 of the suction passage 40 may be slow to respond to pressure changes in the cylinder 42. 0a, and compliance of the third portion 40c of the suction passage 40 (the first The expansion and contraction of the first portion 40a of the suction passage 40 and the third portion 40b of the suction passage 40 exacerbates the problem. The reason is that the lines defining the portions 40a, 40b and 40c of the suction passage 40 expand and This is because as pressure changes in the stem 42, there is the potential for a larger volume.

[0055] To improve control responsiveness, the second sensor 57 and the second vent valve 60 are The second sensor 48 is included along the second portion 40b of the passageway 40. The sensor 57 may include a differential pressure sensor 50b and / or a gauge pressure sensor 52b. The first sensor 48 and the second sensor 57 are a pressure sensor, a temperature sensor, an ultrasonic sensor, and The sensor may be any type of sensor, including, but not limited to, a gas sensor. It should be understood that the first sensor 48 and the second sensor 57 may comprise any number of individual sensors. It should be understood that this may also be the case.

[0056] The second sensor 57 effectively measures a second suction pressure 182 at the surgical handpiece tip 30. The measurement value from the second sensor 57 is input to the controller 1. 02 to control a second vent valve 60 to open a second portion of the suction passage 40 to the atmosphere. It is used to generate a second input signal 233 that selectively releases portion 40b.

[0057] The second vent valve 60 is operable to open the suction passage 40 to the atmosphere. , reducing the pressure in the suction passage 40 or in a location adjacent to the fluid backflow device 462. Specifically, the second vent valve 60 is disposed at the end 47 of the second portion 40b of the suction passage 40. In this configuration, the second vent valve 60 also detects the relative position of the second sensor 57. The second vent valve 60 may be the same as or different from the first vent valve 54. This is also fine.

[0058] During one configuration, or particular mode, the suction pressure in ultrasonic surgical handpiece 28 is entirely controlled by the second vent valve 60. In this configuration, the system 42 provides the feeling of a lower pressure suction setting, which makes the ultrasonic surgical handpiece 2 8 at the tip 30, and between the cassette 34 and the surgical waste container 70. The suction line is cleared faster and clogs are reduced. System 42 then monitors the pressure at tip 30 of surgical handpiece 28. , thereby allowing the system 42 to detect possible blockages in the aspiration line. The measurement from the second sensor 57 represents the pressure at the tip 30. , which may be used to estimate the flow rate at the tip 30 of the surgical handpiece 28. Once the flow rate is estimated, the system 42 can detect possible blockages. The system 42 can detect a potential blockage in the system 42. This helps maintain optimal conditions during surgery and optimizes the ultrasound energy required. can.

[0059] The second suction pressure 182 is less affected by the large volume of the surgical waste container 70 and therefore If a second sensor 57 is also located on the console 20, the measurement from the second sensor 57 The values ​​are more representative of the actual pressure at the tip 30 of the ultrasonic surgical handpiece 28. By controlling the second vent valve 60, the air flow at the surgical handpiece tip 30 can be This provides a faster response in controlling the pressure applied to the surgical handpiece than the control of the first vent valve 54. The volume between the tip of the dowel piece 30 and the second vent valve 60 is equal to the volume of the dowel piece 30 when the first vent valve 54 is located. 40a of the suction passage 40. This also allows for a larger capacity surgical waste container. 70, the second vent valve 60 is closer to the tip 30 of the ultrasonic surgical handpiece 28. In addition, the second portion 40b of the suction passage 40 is smaller than the first portion 40 of the suction passage 40. a, the second portion 40b of the suction passage 40 follows suit. It has low elasticity and is less likely to deform as a result of suction pressure.

[0060] The suction control algorithm represents the pressure at both the tip 30 and the surgical waste container 70. The signal is used to vary the current supplied to the first vent valve 54 and the second vent valve 69. suction is dynamically adjusted by adjusting the pressure and flow in the system 42. Vary the amount.

[0061] FIG. 10 shows a method for controlling the suction pressure in an ultrasonic surgical handpiece 28. A control system 42 is used to improve control responsiveness during operation of the handpiece 28. 1 is a block diagram of a portion of the controller 102 showing first and second PID control loops. 126, 128 are used to adjust the pressure in the suction passage 40. The first and second PIs The D controllers 152, 154 use several inputs to determine the first ventilation current 164 and and a second ventilation current 166 are outputted to change the positions of the first and second ventilation valves 54, 60. Adjust accordingly.

[0062] The signals from the first and second sensors 48, 58 are fed to the first and second input signals 232, 233. 3. In one configuration, the first input signal 232 is a measured waste container pressure signal. The first input signal 232 is the measured tip pressure signal 133. The inputs are a maximum waste container pressure signal 138, a minimum handpiece pressure signal 136, a tip clog signal, signal, suction setting 140, and foot pedal setting 142. These are explained in more detail below.

[0063] Data is read from the first and second sensors 48, 57 to determine whether the first and second vent valves By interfacing with 54, 60, the first and second PID control loops The switches 126, 128 actively vary the current supply to the first and second vent valves 54, 60. This improves the responsiveness of the system. Also, the first and second sensors are flow meters. In certain configurations, measurements from the first and second sensors 48, 57 may cause a controller 102 monitors the overall flow rate of the system 42 and detects possible blockages in the suction line. The detection of blockages in system 42 is described in more detail below. .

[0064] The first PID control loop 126 controls the pressure in the first portion 40a of the suction passage 40. and adjusts the suction level maintained within the surgical waste container 70 accordingly. This ensures that pinch valve 62 is operational (it can be turned on and off if necessary). The actuator is pneumatically controlled as required, and engages using pressure generated by the suction pump 74. 3) to control the maximum amount of suction available to the suction system 42 at any given time. The time scale of the pressure control response in the first portion 40a of the aspiration passage 40 is This is determined primarily by the amount of air available within the vessel 70 .

[0065] Referring to FIG. 10, a first PID control loop 126 controls the first vent valve 54. In the first PID control loop 126, the actual pressure measurement is The measured value is obtained from a first sensor 48 connected to the first portion 40a of the suction passage 40. In this example, In the embodiment, the first sensor 48 outputs a voltage based on the measured pressure. A pressure-to-pressure converter 130 can be used to convert the pressure into a pressure measurement. The signal is a measured waste container pressure signal 132 .

[0066] The target waste container pressure signal 134, in addition to the power setting from the console 20, is The handpiece tip 30 for ultrasonic surgery, the handpiece 28 for ultrasonic surgery, or the handpiece tip 30 for ultrasonic surgery stored in the console 20 In this configuration, the target waste volume is determined based on parameters or information that can be used to The handpiece pressure signal 134 is coupled to an aspiration set point 140, a minimum handpiece pressure signal 136, and a maximum washer pressure signal 138. The target waste container pressure signal 134 is calculated from the waste container pressure signal 138. The target waste container pressure signal 134 is generated by a first combiner that combines the measured waste container pressure signal 134 with the measured Combined with a negative value of the waste container pressure signal 132. Between the two signals 134 and 132 The difference becomes the waste container pressure error signal 148. In other configurations, the target waste container pressure signal 1 34 is related to the measured waste container error signal 132 and the waste container pressure error signal 148. The waste container pressure error signal 148 may be calculated using the first P The signal is supplied to the ID controller 152.

[0067] Both the suction setting 140 and the foot pedal setting 142 are entered into the console 20. This is a user choice.

[0068] The first PID controller 152 also controls a maximum first ventilation current 156 and a minimum first ventilation current 157. The first PID controller 152 then receives a signal indicative of the first ventilation current 158. , and outputs a first ventilation current 164 that opens and closes the first ventilation valve 54. In this configuration, The first vent current 164 is transformed so that a larger current causes the first vent valve 54 to open more. , a smaller current causes the first vent valve 54 to close more.

[0069] In one configuration, two parameters are considered: maximum waste container pressure 138 and minimum hand The piece pressure 136 is associated with an RFID tag or each surgical handpiece tip 30. Specifically, the RFID tag is stored in each surgical handpiece. The piece tip 30 may be included in a sleeve associated with the piece tip 30. The controller 102 may include a memory device 168. The memory device associated with the tip 30 is It should be understood that the memory device 168 may be the same as or different from the memory device 168. It should further be appreciated that the memory device may include any number of memory devices.

[0070] Maximum waste container pressure at the surgical handpiece tip 30 or the sleeve associated with each tip By storing the minimum handpiece pressure 136 and the force 138, the surgical handpiece pressure to be used Many aspects of the system change depending on the end piece tip 30, resulting in a better system. The maximum pressure achievable in the system is determined by the rate at which the suction pressure is released. Each surgical handpiece tip 30 has different suction characteristics, which allows When the first vent valve 54 and the second vent valve 60 are fully opened and / or fully closed, different Each of the surgical handpiece tips 30 has a different length, a different pre-aspiration hole configurations, different sleeve sizes, and You can have all the different geometries together. This allows you to have an absolute minimum setting. Provides control over the full range available for different tips. To this end, an RFID tag or other memory device is used in the suction control system. The maximum waste container pressure 138 that the control system will allow, and the control The maximum waste container pressure signal 138 is the minimum tip pressure 136 that the system will tolerate. 0, which is already represented as a pressure range, taking into account the maximum waste container pressure signal 138. do.

[0071] The maximum waste container pressure signal 138 is typically used to prevent the ultrasonic surgical handpiece tip 30 from being occluded. achievable with the first vent valve 54 and the second vent valve 60 fully closed without In some cases, the tip opens to its fullest extent, giving the lowest suction and the highest suction. With a minimum pressure difference between the two, the maximum achievable pressure is greater than the maximum waste container pressure. It is set easily.

[0072] The minimum achievable steady state suction pressure is when the first and second vent valves 54, 60 are fully open and A surgical handpiece tip 30 is attached to the surgical handpiece 28 and the console 20. In the state where the second sensor 57 is connected to the second portion 40b of the suction passage 40, This value is used to set the lowest possible vent pressure setting. Without this, many of the low pressure settings in aspiration would be indistinguishable from one another. The pressure set point is always below the measured pressure and operates the first and second vent valves 54, 60. If left at full throttle the desired set point will never be reached.

[0073] Returning to FIG. 10, the second PID control loop 128 controls the flow of the second vent valve 60 through the Used for rapid control of the suction pressure available at the sonic surgical handpiece tip 30 to regulate the suction load / Allows constant suction pressure even under rapidly changing occlusion conditions. This allows the surgeon It is desirable for there to be delicate, precise and rapid control of the available tip suction power. The time scale of the pressure change is much faster than that of the waste container, 57 to the surgical handpiece tip 30. This second PID control loop 128 has the same inputs and It works in a similar way.

[0074] In the second PID control loop 128, the actual pressure measurement is 40b or is acquired from a second sensor 57 in communication with the dirty side flow path 460. In this example, the second sensor 57 outputs a voltage signal based on the measured pressure. This voltage signal can be converted to a pressure measurement using a second voltage-to-pressure converter 131. The measured tip pressure signal 133 is coupled by a second coupler 146 to a target tip pressure. The target tip pressure signal 135 is combined with the force signal 135 associated with each surgical handpiece tip. The determination is based on parameters stored in an associated memory device.

[0075] Additionally or alternatively, the target tip pressure signal 135 may be based on a tip clog threshold. The tip clogging threshold may be stored in a memory device associated with each surgical handpiece tip. or parameters stored in a memory 168 associated with the controller 102, Once the tip plugging threshold is determined, the system 42 may use an operating routine 300 to and a clog detection system to determine whether a clog has been detected in the ultrasonic surgical handpiece 28. The operational routine 300 is described in detail below.

[0076] The second PID control loop 128 controls the suction set point 140, the foot pedal set point 142, The target tip pressure 1 from the small handpiece pressure signal 136 and the maximum waste container pressure signal 138 35, and the target tip pressure signal 135 is combined with the measured tip pressure signal 133 to A tip pressure error signal 150 is generated. The tip pressure error signal 150 is calculated based on the tip pressure signal 133. It should be understood that the tip error signal is based on the target tip pressure signal 13. 5 is combined with the negative value of the measured tip pressure signal 133. The difference between the two signals is The tip pressure error signal 150 is a second PID controller. The second PID controller 154 also controls the second vent valve 6 A signal indicating a maximum second ventilation current 160 and a minimum second ventilation current 162 with respect to 0 is The second PID controller 154 receives a second vent valve 60 that opens and closes the second vent valve 60. In this configuration, the second ventilation current 166 is inverted to provide a more A larger second vent current 166 opens the second vent valve 60 more, and a smaller second vent current The air current 166 causes the second vent valve 60 to close more tightly.

[0077] The positions of the first and second vent valves 54, 60 are controlled by the console 20 in the memory device. Instead, the first and second vent valves 54, 60 can be housed in the space 168. The position of the waste container pressure signal 132 is between the measured waste container pressure signal 134 and the target waste container pressure signal 134. and comparing, combining, evaluating, and determining between the measured tip pressure signal 133 and the target tip pressure signal 135. The properties may be based on a numerical value or a mathematical relationship, respectively.

[0078] FIG. 11 illustrates how a target pressure signal can be set and how such a signal How the aspiration set point 140, the minimum handpiece pressure signal 136 and the maximum waste container pressure 1 shows an example of how the minimum handpiece pressure 136 can be related to the signal 138. In addition to the maximum waste container pressure 138, there are two other points to consider in FIG. On the line representing actual waste container pressure and target waste container pressure, indicated by LP There is a low point. The waste container pressure is always at the target waste level while being controlled at a very low suction setting. There is a point LP at which the pressure remains higher than the vessel pressure 134. This is because the system 42 is This means that the system is completely controlled by valve 60. The stem 42 has a lower pressure at the tip 30, providing a feeling of a lower suction setting. while the suction line between the cassette 34 and the surgical waste container 70 is cleared more quickly. This reduces clogging.

[0079] At the upper limit of the points indicated in HP on the lines representing actual and target handpiece pressure The second vent valve 60 then closes completely to allow for a higher pressure change. The main air pressure volume of 70 has already been fully exhausted, and the tube of the second part 40b of the suction passage 40 This response is fast because the scalable A higher suction setting allows for a faster attainment of the desired higher pressure. Under this load, the pressure in the system 42 quickly meets the upper part of the control target.

[0080] Finally, as can be seen from the graph of FIG. 11 and the schematic diagram of FIG. 12, the system 42 A high pressure is maintained in the first portion 40a of the suction passage 40 by the second portion 40b of the passage 40. Additionally or alternatively, the "dirty size" of the system 42 may be designed to Higher pressure is maintained on the "clean side" than on the "surgery side" and the surgical waste container 70 is divided into two In other words, the surgical waste container 70 and the filter 72 provide a functional boundary between the sides. to the suction pump 74 while maintaining a higher pressure at the surgical handpiece tip 30 and The remainder of the suction passage 40 is maintained at a lower pressure. The second vent valve 60 is maintained by the controller 102 which controls the valves 54 and 60. When the air enters the second portion 40b of the suction passage 40 through the At 30 the pressure drops rapidly.

[0081] FIG. 12 shows a schematic diagram of the aspiration system, with schematic electrical connections representing the air resistance. As shown, there are three connectors between one side of the surgical waste container 70 and the pinch valve 62. Components (Clean Side Tube, Filter 72, and Surgical Waste Container / Canister) On the other hand, a dirty suction tube is provided between the pinch valve 62 and the surgical waste container 70. The "dirty side" has two dirty side tubes and a body tube. A second sensor 57 (differential pressure sensor 50b and gauge pressure sensor 52), a second vent valve 60, and a diffuser, The ball valve 86 is provided in communication with the fluid backflow device 462. The "id" includes a suction pump 74, a first sensor 48 (a differential pressure sensor 50a and a gauge pressure sensor 52a), clean side tube, filter 72, and surgical waste container / can The muffler filter is connected to the suction pump 74. It is provided.

[0082] Due to the large volume of the surgical waste container 70 and the air resistance of the system 42, all of the aspiration passages 40 Even if all the portions are in communication, the first portion 40a of the suction passage 40 is in communication for a predetermined time. The pressure difference causes the first portion 40a of the suction passage 40 to be in a higher pressure state. This helps ensure that waste does not get in. This is done by using a filter 72 and a suction pump. This is important because the tubing between 74 is not changed between patients.

[0083] III. Clogging detection During operation of the ultrasonic surgical handpiece 28, a common problem is This occurs due to clogging or obstruction of the tip 30. While the tip 30 is clogged, the suction pump 74 continues to operate, and suction pressure builds up within ultrasonic surgical handpiece 28. When the pressure is released, the pressure drops, causing a large amount of surgical waste to be aspirated too quickly. This is known as a post-occlusion surge. See Figure 13. Upon receiving the signal, the system determines whether a clog has been detected in the surgical handpiece 28. The operating routine 300 may implement an operating routine 300 that reduces and / or reduces surges. or designed to prevent

[0084] Measurements from the first sensor 48 and the second sensor 57, as well as the first vent valve 54 and and the second vent valve 60, respectively, to perform the operation routine 300. The surgical handpiece 28 performs the following steps to determine if a clog has been detected in the surgical handpiece 28: In one configuration, the measurements from the first and second sensors 48, 57 are respectively There may be one flow rate and a second flow rate.

[0085] Another advantage of the system 42 implementing the operating routine 300 is that it maintains an ideal tissue ablation rate. automatically adjusts suction to maintain an ideal flow rate for ultrasonic tissue ablation; Alerting the user to possible blockages and clearing them automatically within the system Including, but not limited to:

[0086] 2 and 10 in addition to FIG. 13, the operating routine 300 determines the tip plug threshold The process begins at step 301, where a power supply is provided. In one configuration, the system 42 is turned on. When the tip of a surgical handpiece is attached to the From the maximum pressure based on, a tip clog threshold is calculated. In another configuration, the tip clog threshold is calculated as Each surgical handpiece includes a memory sleeve device located in a sleeve associated with the tip. The parameter may be stored in a memory device associated with the tip of the dosing piece. The tip clog threshold can help determine possible clogs.

[0087] In step 302, the system 42 enters a jam control loop. , actual pressure measurements are obtained from the first sensor 48 and the second sensor 57. In the configuration, the first sensor 48 and the second sensor 57 are differential pressure sensor 50a and differential In another configuration, the first sensor 48 and the second sensor 57 may be a pressure sensor 50b. may be a flow sensor.

[0088] Then, in step 306, the first or second PID pressure control loop 126, 128 is Either one of the above is used to calculate the measurements from the first and second sensors 48, 57 according to a first predetermined parameter. The first predetermined parameter can be compared to a memory associated with the tip 30. The information may be stored in a remote device or in the memory device 168 of the controller 102. If the tip clogging threshold is greater than a first predetermined parameter and the aspiration setpoint 140 is greater than a first predetermined parameter, If it is greater than the percentage limit, the operating routine 300 proceeds to step 308. The percentage limit may be stored in a memory device associated with the surgical handpiece tip 30, or The percentage may be stored in the memory device 168 of the controller 102. .

[0089] In step 308, the controller 102 may be configured to Indicates that a clog has been detected, and the operating routine 300 proceeds to step 310 .

[0090] In step 310, the first and second suction pressure measurements 180, 182 are More specifically, the first and second sensors 48 and 57 The differential pressure sensors 50a, 50b are disposed in the first and second portions 40a, 40b of the suction passage 40. Based on the change or decrease in pressure, first and second input signals 232, 233 are output, respectively. .

[0091] Thereafter, in step 312, based on the pressure measurements from the first and second sensors 48, 57, Based on the estimated first and second flow rates, respectively, the controller 102 may include The first flow rate can be estimated based on the input signal from the differential pressure sensor 50a. Then, the controller 102 estimates a second flow rate based on an input signal from the differential pressure sensor 50b. Alternatively, the first sensor 48 and the second sensor 57 may be In a configuration in which the controller 102 is a controller, the controller 102 may be configured to receive the current from the first and second sensors 48, 57. Based on the volume measurements, the first and second flow rates can be determined.

[0092] To calibrate the position of the first vent valve 54 to the first flow rate, the operating routine 300 includes: The position of the first vent valve 54 may be repeatedly evaluated. If the air valve 54 is closed, the operating routine 300 proceeds to step 316, where a first The flow rate is set to 0. If the first vent valve 54 is open, the operating routine 300 Proceed to step 318.

[0093] In step 318, the second suction pressure 182 is evaluated to calibrate the second flow rate. If the second suction pressure 182 at the second sensor 57 is less than the second predetermined parameter, the movement The operation routine 300 proceeds to step 320 where the second flow rate is set to zero. The parameters are stored in either of the memory devices 168 and 169 described above. In one configuration, the second predetermined parameter may be a square inch of area (PS For example, the second predetermined parameter may be a pressure unit representing pounds of force per second. may be 0.005 PSI.

[0094] Once the first and second flow rates have been calibrated, in step 322, the controller 102 The controller 102 estimates the tip flow rate based on the flow rate of the second flow rate. Continuously assessing the tip flow rate during a first predetermined time interval using the input to determine an average tip flow rate. As described above, the measurements from the second sensor 57 are taken at the surgical handpiece tip 30. is more representative of the actual measurements at As shown in Figure 10, the timer is connected to the controller 102. The timer is operable to time the duration of the tip clog signal.

[0095] The average tip flow rate can be calculated from the moving average of the tip flow rates. The roller 102 samples the tip flow rate for a first predetermined time interval and selects a particular number of tip flows. The volume measurements are stored in a rolling window. The rolling window contains a certain number of tip flow rates. When the tip flow rate is stored, the latest sample is replaced by the oldest sample before the latest average is calculated. For example, the first predetermined time interval is 3 seconds and the specific number is 5. The average is calculated over five tip flow samples per second, with each tip flow sample discarded every 3 seconds. The predetermined time interval is determined by measuring the distance between the distal end 30 of the ultrasonic surgical handpiece 28 and the A memory device, a memory 168 associated with the controller 102, or any other memory It should be understood that the information may be stored in a memory.

[0096] In step 324, the average tip flow rate is compared to a tip plugging threshold. If so, the operating routine 300 proceeds to step 328. If the tip flow rate is greater than the tip plugging threshold, the operating routine 300 proceeds to step 326. The timer is reset or cleared and the tip jam signal is reset. The controller 102 then determines that no blockage has occurred within the surgical handpiece 28. If so, the operating routine 300 returns to step 302.

[0097] In other configurations, the average tip flow rate may be compared to a third predetermined parameter. The parameters may be parameters stored in any of the memory devices mentioned above. Similar to the comparison with the tip clogging threshold, if the average tip flow rate is greater than a third predetermined parameter, For example, the timer and the tip jam signal are reset or cleared. Return to step 302.

[0098] If the average tip flow rate is less than the tip plugging threshold or a third predetermined parameter, the operating routine The program 300 proceeds to step 328. In steps 328-330, the timer is running. If not, a timer is started or incremented from a zero time start value.

[0099] Next, using a timer, the operating routine 300 at step 332 The average tip flow rate is evaluated for a fixed time interval. If the average tip flow rate is greater than or equal to a second predetermined time interval, the average tip flow rate is greater than or equal to a second predetermined time interval. If the tip plug threshold or the third predetermined parameter is less than the tip plug threshold, the controller 102 , in step 334, a tip clog signal is output.

[0100] If a tip clog signal is output from the operating routine 300, the controller 102 A clog has been detected in the surgical handpiece 28 or the tip of the surgical handpiece 28. The user and / or controller can then clear the blockage to achieve optimal tissue cutting. The next step to maintain the removal rate can be determined. In one configuration, a tip clog signal If the output is "ON", the controller 102 automatically adjusts the positions of the first and second vent valves. to control the suction level of the suction pump 74, the suction set point, or any combination thereof. For example, as shown in FIG. 10, the tip clog signal is fed to a second PID The controller 102 determines whether the tip is clogged based on the tip clog signal. The position of the second vent valve 60 may be controlled based on this.

[0101] If a tip clog signal is output in step 334, the operating routine 300 proceeds to step 302, and the operating routine 300 can return to the jam control loop. Thus, the system 42 automatically implements the operating routine 300 to operate the surgical handpiece 28. This makes it possible to detect possible blockages in the

[0102] The words "include," "includes," and "including" The terms "comprise", "comprises" and "compris It is to be understood that the term "internal connection" has the same meaning as the term "internal connection."

[0103] For purposes of this description, the present disclosure, unless expressly specified to the contrary, It is understood that various alternative orientations may be envisioned. The specific devices and processes described in the specification are merely illustrative of the inventive concepts defined herein. It should also be understood that the present disclosure is merely an example of an exemplary configuration. Specific dimensions and other physical characteristics are not expressly defined unless the claims expressly state otherwise. This should not be considered limiting.

[0104] Clauses: 1. Controlling the suction pressure in ultrasonic surgical handpieces to improve control response during suction 1. A suction system comprising: a controller, an aspiration pump, and a first A sensor, a fluid backflow device, a second sensor, a clean side vent mechanism, and a second vent mechanism. With a console that includes The controller controls the clean side based on an input signal from the first sensor. configured to control a vent mechanism; The controller controls the second vent mechanism based on an input signal from the second sensor. configured to control Suction system.

[0105] 2. Control the suction pressure in ultrasonic surgical handpieces to improve control response during suction. 1. A suction system comprising: a controller, an aspiration pump, and a first a console including a venting mechanism and a second venting mechanism, the suction system being adapted to vent surgical waste. configured to be placed in communication with a waste receptacle; The controller controls the aspiration of liquids and solid materials passed through the surgical handpiece. In response, the controller is configured to control the second vent mechanism. controls the first vent mechanism to maintain a desired pressure in the surgical waste container. It was configured as follows: Suction system.

[0106] 3. An aspiration system for controlling aspiration pressure in an ultrasonic surgical handpiece, comprising: A suction pump; A first joint port, a second joint port, and a third joint port are defined. The first joint port is a first flow extending from the ultrasonic surgical handpiece. A joint that connects the paths; a surgical waste container port connected to the second joint port; a second flow path; a third flow passage connected to the third joint port; a fourth flow path connected to the second surgical waste container port; a first sensor coupled to the fourth flow path and configured to provide a first signal; a second sensor coupled to the third flow path and configured to provide a second signal; A leading end clogging signal is output based on the first signal and the second signal, and a controller configured to control the aspiration pump based on the tip clog signal; , A suction system with

[0107] 4. An aspiration system for controlling aspiration pressure in an ultrasonic surgical handpiece, comprising: A console including a suction pump; A first joint port, a second joint port, and a third joint port are defined. The first joint port is a first flow extending from the ultrasonic surgical handpiece. a joint connected to the path; a surgical waste container port connected to the second joint port; a second flow path; a third flow passage connected to the third joint port; a fourth flow path connected to the second surgical waste port; a first sensor coupled to the fourth flow path and configured to provide a first signal; a second sensor coupled to the third flow path and configured to provide a second signal; a first vent valve connected to the fourth flow path; a second vent valve connected to the third flow path; determining a first flow rate based on the first signal and determining a second flow rate based on the second signal; and outputting a tip clogging signal based on the first signal and the second signal. and determining a position of the first vent valve and / or the second vent valve based on the tip clogging signal. a controller configured to control a position of the air valve; A suction system with

[0108] 5. A method of controlling aspiration pressure in an ultrasonic surgical handpiece, comprising: activating a suction pump to generate suction pressure within the suction system; a dirty side flow path disposed between the ultrasonic surgical handpiece and a fluid reflux device; determining a first flow rate of a second flow rate of a clean side flow path disposed between the aspiration pump and a surgical waste container; determining a tip clog signal based on an average tip flow rate based on the first flow rate and the second flow rate; An output step; controlling the aspiration pump based on the tip clog signal; The method according to claim 1,

[0109] 6. A cassette insertion port is defined, and two pneumatic console ports are provided therein. The console and The pneumatic console port is connected to or integral with the console. a suction source communicating with one of the outlets; A first pressure port is integral with the console and communicates with the other of the pneumatic console ports. A force sensor; A second pneumatic pressure port is integral to the console and communicates with one of the pneumatic console ports. A force sensor; a cassette selectively and slidably disposed within the cassette insertion opening; Equipped with The cassette comprises: a substantially rigid housing defining a chamber therein; a fluid transfer portion of the pump including a suction side and a discharge side of the pump; a plurality of fluid passages disposed at least partially within the chamber; Equipped with The plurality of fluid passages include A first end connected to the suction side and a second end connected to a supply fluid container. a first fluid passage; A first end connected to the discharge side and a second end connected to a handpiece. a second fluid passage; A first end connected to the handpiece and a second end connected to a waste container. a third fluid passage including: a first end connected to a first console connector of the housing; and a second end connected to a container, the first console connector being adapted to connect the cassette to a When the cassette is inserted into the cassette insertion port, one of the pneumatic console ports is pneumatically connected to the cassette insertion port. a fourth fluid passageway having a first pneumatic connector port connected thereto; and a first end connected to the third fluid passage and a second console of the housing; a second end connected to a connector, the second console connector being connected to the cassette When the cassette is inserted into the cassette insertion port, the other of the pneumatic console ports is supplied with air. a fifth fluid passageway having a second pneumatic connector port to be electrically connected to the fifth fluid passageway; Equipped with Fluid management systems.

[0110] 7. A method of using a surgical cleaning cassette, comprising: a substantially rigid housing defining a chamber therein; and disposed externally of said housing; a compressible peristaltic pump tube disposed at least partially in the chamber; each of the plurality of fluid passages extending through a first portion of the pump tube; a first end connected to the end of the supply fluid container and a second end connected to the supply fluid container; a first end connected to the second end of the pump tube; and a hand pin. a second fluid passage including a second end connected to the handpiece; a third fluid passageway including a first end and a second end connected to a waste container; a first end connected to a first console connector fixed to the housing; a fourth fluid passage including a second end connected to a material container; a first end connected to a second console connector fixed to the housing; and a fifth fluid passage having a second end for receiving the fifth fluid passage. Tep and A step of inserting the cassette into a control console that includes or is connected to a suction source. Tep and connecting the second end of the first fluid passage to the supply fluid container; connecting the second end of the second fluid passageway to the handpiece; connecting the first end of the third fluid passageway to the handpiece; connecting the second end of the third fluid passage to the waste container; connecting the second end of the fourth fluid passage to the waste container; The method according to claim 1,

[0111] In the above description, several embodiments have been described. The embodiments described are not intended to be exhaustive or to limit the disclosure to any particular form. The terminology used is intended to be in the nature of words of description rather than of limitation. Numerous modifications and variations are possible in light of the above teachings, and the present disclosure may be modified in any manner that would be construed as being within the scope of the present invention. It may be practiced otherwise than as specifically described.

Claims

1. Controlling the aspiration pressure in an ultrasonic surgical handpiece to improve control response during aspiration 1. An aspiration system comprising: A suction pump; a suction pump extending at least partially between the surgical handpiece connector and the suction pump; The suction passage further includes a joint that divides the suction passage into at least two flow paths. A passageway, a first portion of the aspiration passageway disposed between a surgical waste container connector and the aspiration pump; a waste container pressure supply connected to said waste container pressure supply; One sensor; a first vent valve connected to the first portion of the suction passage; a second vent valve connected to a second end of the suction passage beginning at the joint; 、 a distal end of the ultrasonic surgical handpiece connected to the second portion of the suction passage; a second sensor configured to monitor the associated aspiration pressure to provide a tip pressure signal; 、 controlling a position of the first vent valve based on the waste container pressure signal; a controller configured to control a position of the second vent valve based on the tip pressure signal; Controller and A suction system with

2. the joint comprising a joint valve operable to divide the suction passage; The joint valve includes a first joint port, a second joint port, and a third joint port. a joint port, and the second portion of the suction passage is connected to the third joint port. Connected to the The aspiration system of claim 1 .

3. The joint valve prevents surgical waste from entering the second portion of the aspiration passageway. This is a ball valve that The aspiration system of claim 2.

4. A third portion of the suction passage is connected to the second joint port and is a surgical waste container connector connected to said surgical waste container; The aspiration system of claim 2.

5. a cassette fluidly connected to the ultrasonic surgical handpiece; the cassette includes an opening to a third portion of the aspiration passageway; The opening operates to prevent suction pressure from reaching the tip of the ultrasonic surgical handpiece. Align with possible pinch valves, A suction system according to any one of claims 1 to 4.

6. The cassette further includes an irrigation line connecting the ultrasonic surgical handpiece to an irrigation source. Prepared, The aspiration system of claim 5.

7. The ultrasonic surgical handpiece further comprises: A suction system according to any one of claims 1 to 6.

8. the first portion of the suction passage includes a clean side passage; The second portion of the suction passage includes a dirty side passage. A suction system according to any one of claims 1 to 7.

9. The first portion of the suction passage has a larger volume than the second portion of the suction passage. Is, A suction system according to any one of claims 1 to 8.

10. The first portion of the suction passage is under a higher pressure than the second portion of the suction passage. Has a subordinate nature, A suction system according to any one of claims 1 to 9.

11. a pinch valve aligned with a third portion of the suction passage; The third portion of the aspiration passageway extends from the joint to the surgical waste container connector. Extends to The pinch valve, when activated, directs suction pressure to the tip of the ultrasonic surgical handpiece. Configured not to reach A suction system according to any one of the preceding claims.

12. a three-way valve connected to the pinch valve; The three-way valve connects the pinch valve to the atmosphere and / or the first portion of the suction passage. configured to connect to The aspiration system of claim 11.

13. The pinch valve is pneumatically operated. A suction system according to claim 11 or 12.

14. The pinch valve is adapted to be connected to a foot pedal that operates the ultrasonic surgical handpiece. configured to close when the valve is not inserted, A suction system according to any one of claims 11 to 13.

15. The controller further controls a position of the first vent valve to vent the surgical waste. configured to maintain a desired pressure in the vessel; A suction system according to any one of the preceding claims.

16. The controller includes a first PID control loop that controls the first vent valve; a second PID control loop for controlling the second vent valve. A suction system according to any one of the preceding claims.

17. The first PID control loop is connected to the first portion of the suction passage. and a target waste container pressure based on the waste container pressure signal provided by the sensor. configured to determine a waste container error signal; 17. The aspiration system of claim 16.

18. The target waste container pressure is a median associated with a tip of the ultrasonic surgical handpiece. based on parameters stored in the memory device.

20. The aspiration system of claim 17.

19. The second PID control loop is connected to the second portion of the suction passage. and a target tip pressure based on the tip pressure signal provided by the sensor. configured to determine a signal; 17. The aspiration system of claim 16.

20. The target tip pressure is stored in a memory device associated with the tip of the ultrasonic surgical handpiece. determined based on parameters stored in the device, 20. The aspiration system of claim 19.

21. The controller adjusts the first vent valve and the second vent valve to A higher pressure in the first portion of the suction passage and a lower pressure in the second portion of the suction passage. configured to maintain a relatively lower pressure in the A suction system according to any one of the preceding claims.

22. Method for controlling the suction pressure of an ultrasonic surgical handpiece to improve control response during suction There was, Driving a suction pump to generate suction pressure in the ultrasonic surgical handpiece. generating a suction pressure in the aspiration system, depositing the surgical waste into a surgical waste container via a suction passage; a first portion of the aspiration passageway extending between a surgical waste container connector and the aspiration pump; A first vent valve is connected to and disposed along the first portion of the intake passage. sensing a first suction pressure with a first sensor; generating a waste container pressure signal with the first sensor; a fluid backflow device beginning at a joint fluidly connected to the first portion of the suction passage; a second suction pressure with a second sensor disposed along a second portion of the suction passageway, the second sensor measuring ... A sensing step; generating a tip pressure signal with the second sensor; controlling a position of the first vent valve based on the waste container pressure signal; 、 controlling a position of a second vent valve based on the tip pressure signal; The method according to claim 1,

23. By using the fluid backflow device, the surgical waste is directed to the second aspiration passageway. The method further comprises the step of preventing the nozzle from entering the portion of the nozzle.

23. The method of claim 22.

24. a third portion of the aspiration passageway extending from the joint to a second surgical waste container connector; and aligning the pinch valve.

24. The method of claim 22 or claim 23.

25. By controlling the position of the first vent valve, a desired amount of venting is achieved in the surgical waste container. maintaining the pressure. The method according to any one of claims 22 to 24.

26. A stage for routing irrigation fluid to the ultrasonic surgical handpiece connector via a cassette. It also has a The method according to any one of claims 22 to 25.

27. A password stored in a memory device associated with the tip of the ultrasonic surgical handpiece. determining a target waste container pressure based on the parameter. The method according to any one of claims 22 to 26.

28. The position of the first vent valve is determined based on a comparison of the first suction pressure and the target waste container pressure. is controlled based on 28. The method of claim 27.

29. A password stored in a memory device associated with the tip of the ultrasonic surgical handpiece. determining a target tip pressure based on the parameter. The method according to any one of claims 22 to 26.

30. The position of the second vent valve is based on a comparison of the second suction pressure and the target tip pressure. and controlled by the controller.

30. The method of claim 29.

31. The method further comprises the step of activating a pinch valve to close the suction passage. The method according to any one of claims 22 to 30.

32. Releasing the foot pedal stops vibration at the tip of the ultrasonic surgical handpiece. and Moving the valve so that suction from the suction pump operates the pinch valve. and, Further equipped with The method according to any one of claims 22 to 31.

33. The pinch valve is pneumatically operated.

33. A method according to any one of claims 24, 31 or 32.

34. Controlling the aspiration pressure in an ultrasonic surgical handpiece to improve control response during aspiration 1. An aspiration system comprising: A suction pump; a handpiece configured to be placed in fluid communication with the ultrasonic surgical handpiece; A surgical handpiece connector; a surgical handpiece connector extending at least partially between the surgical handpiece connector and the aspiration pump; a suction passageway, further comprising a joint dividing the suction passageway into a first portion and a second portion; a suction passage including a first nozzle disposed between the surgical waste container connector and the suction pump, the first nozzle being located in the suction passage; a first vent valve connected to the portion of a second connecting portion connected to an end of the second portion of the suction passage starting from the joint; A vent valve; Controlling the position of the first vent valve and controlling the position of the second vent valve and maintaining a pressure differential such that the pressure in the first portion of the suction passage is equal to the pressure in the second portion of the suction passage. a controller configured to increase the pressure above that in the second portion; A suction system with

35. 1. An aspiration system for controlling an ultrasonic surgical handpiece, comprising: A suction pump; a catheter extending at least partially between the ultrasonic surgical handpiece connector and the aspiration pump; a suction passage having a first portion and a second portion, the suction passage being provided with a joint for dividing the suction passage into a first portion and a second portion; a suction passage included in the a first nozzle disposed between the surgical waste container connector and the suction pump, the first nozzle being located in the suction passage; a first vent valve connected to the portion of a second vent valve connected to an end of the second portion of the suction passage, Two portions extend along the suction passageway beginning at the joint to the second vent valve. a second vent valve extending therethrough; a first sensor connected to the first portion of the suction passage; a second sensor connected to the second portion of the suction passage; determining a first flow rate based on a first input signal provided by the first sensor; and determining a second flow rate based on a second input signal provided by the second sensor. and outputting a tip clogging signal based on the first flow rate and / or the second flow rate; a controller configured to control the aspiration pump based on the tip clog signal; 、 A suction system with

36. The second flow rate is related to a tip flow rate passing through a tip of the ultrasonic surgical handpiece. was given, 36. The aspiration system of claim 35.

37. The controller is operable to time a duration of the tip plugged signal. a timer for detecting a blockage in the ultrasonic surgical handpiece; 37. A suction system according to claim 35 or claim 36.

38. The controller continuously evaluates the tip flow rate for a first predetermined time interval using a timer. Determine the average tip flow rate.

37. The aspiration system of claim 36.

39. The controller further adjusts the average tip flow rate to a tip of the ultrasonic surgical handpiece. A tip clogging threshold and a ratio based on parameters stored in a memory device associated with the tip. configured to compare 39. The aspiration system of claim 38.

40. The controller further comprises: if the average tip flow rate is greater than the tip plugging threshold; configured to reset the timer and the tip jam signal; 40. The aspiration system of claim 39.

41. The controller further comprises: if the average tip flow rate is less than the tip plugging threshold; configured to start the timer; 41. A suction system according to claim 39 or claim 40.

42. The controller detects whether the average tip flow rate is less than the tip plugging threshold and the tip If the current exceeds a second predetermined time interval, a blockage within the ultrasonic surgical handpiece is detected. and outputting the tip clog signal indicative of the detection of the clog.

41. A suction system according to claim 39 or claim 40.

43. The controller further controls the first vent valve based on the tip clog signal. configured to control the position of the second vent valve, or a combination thereof; A suction system according to any one of claims 35 to 42.

44. The first input signal is related to a first suction pressure sensed by the first sensor. It is said that 36. The aspiration system of claim 35.

45. The second input signal is related to a second suction pressure sensed by the second sensor. It is said that 36. The aspiration system of claim 35.

46. the first sensor and the second sensor are differential pressure sensors; 36. The aspiration system of claim 35.

47. 1. A method for controlling aspiration pressure in an ultrasonic surgical handpiece, comprising: activating the suction pump to generate suction pressure within the suction system; a first portion of the suction passageway disposed between a surgical waste container connector and the suction pump; a first vent valve connected to said first portion of said suction passage; sensing a first suction pressure with a sensor; A second ventilator starts from a joint that divides the suction passage into at least two lines. a second cell connected to a second portion of the suction passageway extending along the suction passageway to a valve; sensing a second suction pressure with a sensor; a first input signal provided by the first sensor and a second input signal provided by the second sensor generating a second input signal provided; determining a first flow rate based on the first input signal and determining a second flow rate based on the second input signal; determining a second flow rate based on the outputting a tip clog signal based on the second flow rate; controlling the aspiration pump based on the tip clog signal; The method according to claim 1,

48. based on the first input signal and the second input signal, a second vent valve, or a combination thereof; 48. The method of claim 47.

49. The second flow rate is related to a tip flow rate passing through a tip of the ultrasonic surgical handpiece. It is being A method according to claim 47 or claim 48.

50. A timer is used to continuously evaluate the tip flow rate for a first predetermined time interval to determine an average tip flow rate. determining a flow rate.

49. The method of claim 48.

51. The average tip flow rate is calculated by measuring the average tip flow rate using a memory associated with the tip of the ultrasonic surgical handpiece. and comparing the tip clog threshold based on parameters stored in the reticle device. Etc.

51. The method of claim 50.

52. resetting the timer based on a comparison of the average tip flow rate to the tip plugging threshold; resetting the tip jam signal and starting the timer. 、 51. The method of claim 50.

53. The average tip flow is less than the tip plugging threshold and the timer is restarted for a second predetermined period of time. If the interval is exceeded, detecting a blockage in the ultrasonic surgical handpiece and removing the blockage. outputting the tip clog signal indicative of the detection of A method according to any one of claims 50 to 52.

54. based on the tip clog signal, the first vent valve, the second vent valve, or controlling a position of the combination.

49. The method of claim 48.

55. 1. A suction system for controlling suction pressure, comprising: An ultrasonic surgical handpiece; A suction pump; A suction pipe extending at least partially between the ultrasonic surgical handpiece and the aspiration pump. a suction passage, the suction passage further comprising a joint dividing the suction passage into a first portion and a second portion. A suction passage, a surgical waste container connector and the suction pump; a first vent valve connected to the first portion; a second vent valve connected to an end of the second portion of the suction passage, The second portion extends along the suction passageway from the joint to the second vent valve. a second vent valve extending from the a first sensor connected to the first portion of the suction passage; a second sensor connected to the second portion of the suction passage; A controller; Equipped with The controller: determining a first flow rate based on a first input signal received from the first sensor; the ultrasonic surgical handpiece based on a second input signal received from the second sensor. determining a second flow rate associated with the tip flow rate passing through the tip of the outputting a tip clog signal based on the first flow rate and the second flow rate; configured to control the aspiration pump based on the tip clog signal. Suction system.

56. Controlling the aspiration pressure in an ultrasonic surgical handpiece to improve control response during aspiration 1. An aspiration system comprising: A console including a suction pump; Surgical waste container having a first surgical waste container port and a second surgical waste container port and, A first joint port, a second joint port, and a third joint port are defined. the first joint port having a first flow path extending from the ultrasonic surgical handpiece; A joint that connects to the a first surgical waste container port connected to the second joint port; a second flow path connected to the a third flow passage connected to the third joint port; a fourth flow path connected to the second surgical waste container port; sensing a pressure indicative of a waste container pressure in the fourth flow path to generate a waste container pressure signal; a first sensor arranged to provide a suction flow path associated with a distal end of the ultrasonic surgical handpiece in the third flow path; a second sensor positioned to sense a pressure representative of the tip pressure and provide a tip pressure signal; a first vent valve connected to the fourth flow path; a second vent valve connected to the third flow path; controlling a position of the first vent valve based on the waste container pressure signal; a controller configured to control a position of the second vent valve based on the tip pressure signal; Controller and Equipped with The suction pump is connected to the fourth flow path. Suction system.

57. 1. A method for controlling an aspiration system to improve control responsiveness during aspiration, comprising: The aspiration system includes a suction pump, an ultrasonic surgical handpiece, and a surgical waste container. a clean side passage, a dirty side passage, and a passage connected to the dirty side passage. A fluid backflow device; a clean side vent mechanism connected to the clean side flow path; a second vent mechanism in communication with the fluid backflow device; and a second vent mechanism in communication with the suction pump and the surgical waste container. a clean side flow path disposed between said ultrasonic surgical handpiece and said fluid backflow device; a dirty side flow path disposed between the The method comprises: sensing a first pressure in the dirty side flowpath; sensing a second pressure in the clean side flowpath; controlling the second vent mechanism based on the first pressure; controlling the clean side vent mechanism based on the second pressure; The method according to claim 1,

58. Controlling the aspiration pressure in an ultrasonic surgical handpiece to improve control response during aspiration 1. An aspiration system comprising: a console having a suction pump; An ultrasonic surgical handpiece; a surgical waste container; a clean side flow path disposed between the suction pump and the surgical waste container; a dirty side flow path; a fluid backflow device communicating with the dirty side flow path; a clean side ventilation mechanism communicating with the clean side flow passage; a second vent mechanism in communication with the fluid reflux device; Equipped with The dirty side flow path is between the ultrasonic surgical handpiece and the fluid reflux device. Placed in Suction system.

59. 1. An aspiration system for controlling aspiration pressure in an ultrasonic surgical handpiece, comprising: a console defining a cassette receptacle and having a cassette release button; a cassette sensor configured to determine a position of the cassette release button; configured to control a pinch valve based on a signal from the cassette sensor. A controller; A suction system with

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