System and method for improving control response during suction

Abstract

This relates to a suction system and method for use with an ultrasonic surgical handpiece. [Solution] This suction system 42 controls the suction pressure in an ultrasonic surgical handpiece 28 to improve control responsiveness during suction. The system includes a console 20 containing a suction pump and a joint that divides the suction passage into at least two flow paths. The first joint port is connected to the first flow path. The second flow path is connected to the second joint port, the third flow path is connected to the third joint port, and the fourth flow path is connected to the port of the surgical waste container 70. A first sensor senses the pressure in the fourth flow path and supplies a waste container pressure signal. A second sensor senses the pressure in the third flow path and supplies a tip pressure signal. The controller controls the positions of the first vent valve and the second vent valve, respectively, based on the waste container pressure signal and the tip pressure signal.

Description

[Technical Field]

[0001] [Cross-reference to Related Applications] This application claims priority to U.S. Patent Application No. 62 / 735,485 filed on September 24, 2018, 2 018 U.S. Patent Application No. 62 / 749,355 filed on October 23, 2018, and U.S. Patent Application filed on April 17, 2019 No. 62 / 835,224, and U.S. Patent Application No. 62 / 847,545 filed on May 14, 2019. All of these applications are hereby incorporated by reference in their entireties into the present specification. incorporated in their entireties into this specification by reference.

[0002] The present disclosure generally relates to aspiration systems and methods for use with ultrasonic surgical handpieces. [Summary of the Invention] [Means for Solving the Problems]

[0003] One aspect of the present disclosure provides an aspiration system for controlling aspiration pressure in an ultrasonic surgical handpiece The system includes an aspiration pump and a surgical handpiece connector. The system extends at least partially between the surgical handpiece connector and the aspiration pump and has an aspiration passage. The aspiration passage includes a first connector, a second connector, and a joint between the surgical handpiece connector and the first connector. The joint divides the aspiration passage into at least two lines. A first sensor is connected to a first portion of the aspiration passage positioned between the second connector and the aspiration pump. The first sensor is configured to monitor waste container pressure and provide a waste container pressure signal. A first vent valve is connected to the first portion of the aspiration passage. A second vent valve is connected to the It is connected to the terminal end of the second section of the suction passage that starts from the joint. Sensor 2 is connected to the second part of the suction passage and is located at the tip of the ultrasonic surgical handpiece. It is configured to monitor the connected suction pressure and supply a tip pressure signal. The system controls the position of the first vent valve based on the waste container pressure signal, and also It is configured to control the position of the second vent valve based on the end pressure signal.

[0004] A method is provided for controlling the suction level of an ultrasonic surgical handpiece. This method involves controlling the suction level of an ultrasonic surgical handpiece. Driving a pump to generate suction pressure within the suction system, i.e., a surgical handpiece The procedure includes a step of generating suction pressure in the connector. Surgical waste is drawn through the connection of the suction passage. The waste is then deposited in the surgical waste container. The first sensor detects the first suction pressure. The sensor is located along the first portion of the suction passage, which extends between the waste container connector and the suction pump. They are arranged in this manner. The first vent valve is connected to the first portion of the suction passage. The method involves the steps of generating a waste container pressure signal and the surgical handpiece connector and A second sensor is positioned along the second portion of the suction passage, extending between the two vent valves. The method further includes the steps of sensing a second suction pressure and generating a tip pressure signal. This method controls the position of the first vent valve based on the waste container pressure signal. Steps include controlling the position of a second vent valve based on a tip pressure signal, It contains.

[0005] Other aspects of this disclosure relate to a suction system for controlling suction pressure in an ultrasonic surgical handpiece. This system provides a suction pump and a surgical handpiece connector. This system has at least one part between the surgical handpiece connector and the suction pump. It is equipped with a suction passage that extends in segments. The suction passage is connected to the first connector for the surgical waste container. Includes the first and second connectors. Between the surgical handpiece connector and the first connector A joint is provided in between. The joint provides at least two flow paths for the suction passage. It is divided into two parts. The first vent valve is located between the waste container connector and the suction pump. It is connected to the first part of the suction passage. The second vent valve starts from the joint. It is connected to the end of the second part of the suction passage. The pressure in the first part of the suction passage is sucked The position of the first vent valve and the second vent valve are such that the pressure in the second part of the passage is higher than the pressure in the second part of the passage. A controller is provided that is configured to control the position of the vent valve to maintain the pressure difference. It is being done.

[0006] Further aspects of this disclosure relate to controlling suction pressure in an ultrasonic surgical handpiece. We provide a system. This system is equipped with a suction pump. The suction passage is ultrasonically operated. It extends at least partially between the surgical handpiece and the suction pump. The suction passage is the Connector 1, Connector 2, and the ultrasonic surgical handpiece are arranged in a state of fluid communication. The joint between the surgical handpiece connector and the second connector, configured to be positioned as such. It further includes a joint. The joint divides the suction passage into at least two lines. The vent valve 1 is located between the first connector and the suction pump, in the first part of the suction passage. It is connected to the second vent valve, starting from the joint and continuing to the second vent valve. is connected to the terminal end of the second portion of the suction passage extending along the suction passage. This syste em further comprises: a first sensor; a second sensor; and a controller configured to determi ne a first flow rate based on a first input signal received from the first sensor, and determine a secon d flow rate based on a second input signal received from the second sensor. The controlle r is further configured to output a tip clogging signal based on the first flow rate and the second flow rate, an d control the suction pump based on the tip clogging signal.

[0007] Still another method for controlling suction pressure in an ultrasonic surgical handpiece is provided. Thi s method comprises the step of driving a suction pump to generate suction pressure in a suction system. T he first sensor is connected to a first portion of the suction passage located between a first connector an d the suction pump. A first ventilation valve is connected to the first portion of the suction passage. The first sensor senses a first suction pressure. The second sensor is connected to a secon d portion of the suction passage starting from a joint. The joint divides the suction passage into at least two li nes and extends along the suction passage to a second ventilation valve. The second senso r senses a second suction pressure. The method further comprises the step of generating a first input signal received from the first sensor and a second input signal received from the second sensor. The method comprises the step of determining the first flow rate and the second flow rate respectively based on the first input signal and the second input signal . And the method comprises: outputting a tip clogging signal based on the first flow rate and the second flow rate ; and controlling the suction pump based on the tip clogging signal. ​

[0008] Another aspect of the present disclosure provides an ultrasonic surgical handpiece, a suction pump, a suction sys tem comprising a suction passage extending at least partially between the handpiece and the suction pump . A first connector, a second connector, and a joint between a surgical handpiece connector port and t he first connector are provided. The joint divides the suction passage into at least two lines. A fir st vent valve is connected to a first portion of the suction passage. The first portion is located be tween the first connector and the suction pump. A second vent valve is connected to a terminal end of a second portion of the suction passage, the second portion extending along the suction passage starting from the joint to the second vent valve . A first sensor is connected to the first portion of the suction passage, and a second sensor is connected to the second portion of the suction passage . The system also includes a controller configured to determine a first flow rate based on a first input signal received from the first sensor , determine a second flow rate based on a second input signal received from the second sensor, outp ut a tip clogging signal based on the first flow rate and the second flow rate, and control the suc tion pump based on the tip clogging signal .

[0009] Yet another aspect of the present disclosure provides a suction system that improves control responsiveness during suction by controlling suction pressure in an ultrasonic surgical handpiece . The suction system comprises a console including a suction pump, a surgical waste container having a first surgical waste container port and a second surgical waste container port , and a joint defining a first joint port, a second joint port, and a third joint port. The first joint port is ​, is connected to a first channel extending from the ultrasonic surgical handpiece. The second channel is It is connected to the 2 joint ports and the 1 surgical waste container port. The 3rd flow path is The fourth channel is connected to the second surgical waste container port. It is connected to the first sensor, which is positioned to sense the pressure in the fourth flow path. It is configured to test the waste container pressure and supply a waste container pressure signal. The second sensor is positioned to sense the pressure in the third flow path, and It senses the suction pressure associated with the tip of the ultrasonic surgical handpiece and provides a tip pressure signal. It is configured to supply. The first vent valve is connected to the fourth flow path. The vent valve is connected to a third flow path. This system also provides pressure signals for the waste container. Based on the number, the position of the first vent valve is controlled, and based on the tip pressure signal, the second Includes a controller configured to control the position of the vent valve. The pipe is connected to the fourth channel.

[0010] Other methods are provided to control the suction system and improve control responsiveness during surgery. The suction system includes a suction pump, an ultrasonic surgical handpiece, a surgical waste container, and a clean It includes side channels and dirty side channels. This system also includes clean side channels. A fluid backflow device communicating with the dirty side channel, and a clean side vent communicating with the dirty side channel. It includes a mechanism. The cleanside channel is located between the suction pump and the surgical waste container. Therefore, the dirty side channel is positioned between the ultrasonic surgical handpiece and the fluid backflow device. This method involves the steps of sensing a first pressure in the dirty side channel and cleaning A step of sensing a second pressure in the side flow path, and a fluid backflow device based on the first pressure. Steps to control the second pressure and step to control the cleanside ventilation mechanism based on the second pressure It has a PU and a .

[0011] Further aspects of this disclosure relate to controlling suction pressure in an ultrasonic surgical handpiece for suction. The present invention provides a suction system that improves the control response within the system. This system includes a suction pump, Ultrasonic surgical handpiece, surgical waste container, cleanside channel, and dirtyside It includes a console with a flow path. The cleanside flow path is for the suction pump and surgical waste. It is positioned between the container and the fluid backflow device, which communicates with the clean side channel, and the dirty A clean-side ventilation mechanism is provided that communicates with the dirty-side airflow channel. It is positioned between the ultrasonic surgical handpiece and the fluid backflow device.

[0012] Further aspects of this disclosure relate to controlling suction pressure in an ultrasonic surgical handpiece for suction. This system provides a suction system that improves the control response within the device. This system is for ultrasonic surgery. The handpiece includes a console that is fluid-connected to it. The console is a controller. Suction pump, first sensor, fluid backflow device, second sensor, and cleanside ventilation mechanism It is equipped with a clean side based on the input signal from the first sensor. The ventilation mechanism is controlled, and the fluid backflow device is controlled based on the input signal from the second sensor. It is designed to be controlled.

[0013] Further embodiments of this disclosure involve controlling suction pressure in an ultrasonic surgical handpiece to achieve suction. This system provides a suction system that improves the control response within the device. This system is for ultrasonic surgery. The handpiece includes a console that is fluid-connected to it. The console is a controller. The system includes a suction pump, a first ventilation mechanism, and a second ventilation mechanism. This system is used in surgery. It is configured to be positioned in communication with the waste container. The controller is for surgical use The first ventilation mechanism is controlled in response to the suction of liquid or solid substances passing through the handpiece. In addition, the second ventilation mechanism is controlled to maintain the desired pressure in the surgical waste container. It is composed of sea urchin. [Brief explanation of the drawing]

[0014] The drawings here illustrate illustrative figures in detail. The drawings show schematic embodiments. While the drawings represent the exemplary embodiments, they are not necessarily to scale and depict groundbreaking aspects of the exemplary embodiments. Certain features may be emphasized for illustrative purposes. The illustrative diagrams cover the exact form and configuration shown in the drawings and described in detail below. It is not intended to be limited or restrictive.

[0015] The advantages of this disclosure, when considered in relation to the attached drawings, should be referred to in the following detailed description. It will be easily understood, just as it will be better understood through [some means].

[0016] [Figure 1] This shows specific components of a suction system, including an ultrasonic surgical handpiece and control console. [Figure 2] This is a schematic diagram of the components of a suction system used to remove irrigation fluid and surgical waste from a surgical site, as an example. [Figure 3]This example illustrates specific components of a suction system that distinguish between the clean and dirty sides of a flow path. [Figure 4] This is an exploded view of a cassette containing the suction and cleaning system tubing. [Figure 5A] This is a diagram of an assembled cassette, as an example. [Figure 5B] This is an example diagram of an assembled cassette inserted into a control console. [Figure 6] This shows a cross-section of the console's pinch valve, which is aligned with part of the cassette and system's suction passage. [Figure 7A] A perspective view of specific internal components of the suction system within the console, including the pinch valve. [Figure 7B] Another perspective view of the internal components of the suction system within the console, including the controller and suction manifold. [Figure 7C] This is a magnified view of the suction manifold of the suction system inside the console. [Figure 8] This is an overhead view of a suction manifold showing pressure sensors and their connections to the suction passages. [Figure 9] This is a circuit diagram of an exemplary pressure sensor. [Figure 10] This is a block diagram of a control system including a first PID control loop and a second PID control loop used to adjust the first and second vent valves of the suction system shown in Figure 1. [Figure 11] This is a graphical representation of the target pressure and actual pressure at various points in the suction passage based on various suction settings. [Figure 12] As an example, this is a schematic diagram of a suction system using an electrical schematic connection to represent air resistance. [Figure 13] As an example, the following shows an operating routine implemented by a suction system that determines whether or not a blockage has been detected in an ultrasonic surgical handpiece. [Modes for carrying out the invention]

[0017] I. System Overview Figure 1 shows specific components of the suction system 42. The suction system 42 is Although it is described for use with the ultrasonic surgical handpiece 28 and console 20, In certain configurations, mechanical means such as electric burrs, drills, and saws are used. It can also be used with other working handpieces. The ultrasonic surgical handpiece 28 is It includes an ultrasonic surgical handpiece tip 30 for aspirating the surgical site. Please understand that it may contain any form of material from the surgical site. For example, ultrasound surgical instruments. The handpiece 28 passes through the ultrasonic surgical handpiece to remove liquids and solids from the surgical site. It can aspirate the substance. Furthermore, unless otherwise specified, "proximal" refers to the surgical hand. It is understood that this means towards the tip of the handpiece 30, and "distal" refers to the tip of the surgical handpiece. Please understand this as meaning moving away from 30.

[0018] The suction system 42 supplies power and suction force to the ultrasonic surgical handpiece 28. It includes a sole 20. The console 20 controls power, washing volume, suction volume, or a combination thereof. It includes a display 22 that shows the alignment. The console 20 is also for ultrasound surgery. When the power of the handpiece 28 is turned ON, the surgical handpiece tip 30 is actively A foot pedal 32, a hand switch, or any other control device to control whether or not it vibrates. It may be connected to a device.

[0019] The suction system 42, according to one configuration, consists of a suction pump 74, a cassette 34, and an ultrasonic It includes a console 20 equipped with a handpiece 28 for wave surgery. In other configurations, suction is Stem 42 is a surgical console 20, suction pump 74, surgical waste container 70 or other It includes a waste container, a cassette 34, and an ultrasonic surgical handpiece 28.

[0020] Figure 2 shows the components of the suction system 42 that removes cleaning fluid and surgical waste from the surgical site. This is a schematic diagram of the setup. Console 20, surgical waste container 70, cassette 34, and / Alternatively, the ultrasonic surgical handpiece 28 includes any number of ports / connectors, and multiple components The components may be fluidly connected to each other. For example, the ultrasonic surgical handpiece 28 It may also include an ultrasonic surgical handpiece connector 26. Multiple suction systems 42 The components are connected together with various tubes or lines to form a suction passage 40. The suction pump 74 generates suction pressure throughout the entire suction passage 40, thereby Most surgical waste and cleaning fluids take the form of liquids, gases, solids, or combinations thereof. The waste is then passed through the suction passage 40 and finally moved to the surgical waste container 70.

[0021] Cassette 34 may include a portion of the line having a suction passage 40. Cassette 3 When 4 is inserted into console 20, cassette 34 and console 20 are connected to console 2 The first port 95, the second port 96, and the third port of the suction manifold 36 in 0 Aligned at 98, as shown in Figure 2, multiple lines of the suction passage 40 are connected to the ultrasonic surgical hand. The endpiece 28, pinch valve 62, and filter 72 extend to each port. The surgical handpiece tip 30 is connected to the waste line 38. 38 extends from the tip 30 of the surgical handpiece to the joint 44 of the cassette 34. The joint 44 divides the suction passage 40 into at least two flow paths, as shown in Figure 2. Unless otherwise specified, multiple lines are to be described as tubes and / or flow paths. Please understand. Joint 44 may include a fluid backflow device 462. Fluid backflow device 462 allows air to pass through, but surgical waste or aspirated fluids can be backed up by the fluid backflow device. Ensure that the suction does not exceed 462 and enter the suction passage 40.

[0022] In one configuration, joint 44 is connected to the first joint port 440 and the second joint It is equipped with a toport 442 and a third joint port 444. Surgical waste container 70 This 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. The second surgical waste container connector 66 is connected to the second surgical waste container port 448. It continues.

[0023] Multiple flow paths in the suction passage 40 include a joint 44, a surgical waste container 70, and a suction pump. This can be explained in relation to 74. The first joint port 440 is for ultrasonic surgery. It is connected to the first channel 450 extending from the handpiece 28. The second channel 452 is The second joint port 442 and the first surgical waste container port 446 are connected. The third channel 454 is connected to the third joint port 444, and the fourth channel 456 is The second surgical waste container port 448 is connected to the second surgical waste container port 448. The fourth flow path 456 is connected to the second surgical waste container port 448. It extends at least partially from the surgical waste container port 448 to the suction pump 74.

[0024] In other words, the suction passage 40 can be divided into three parts. The first part of the suction passage 40 The portion 40a is positioned between the second surgical waste container connector 66 and the suction pump 74. The second portion 40b of the suction passage 40 starts from the joint 44 and is a second ventilation passage It extends along the suction passage 40 to the lubricant 60. The second vent valve 60 is described below. The suction passage 40 can be used to open to the atmosphere. Part 3 40c extends from joint 44 to the first surgical waste container connector 82 at least It is also partially extending.

[0025] Unless otherwise specified, the first flow path 450 is associated with the waste line 38, and the second flow path The passage 452 is associated with the third portion 40c of the suction passage 40, and the third flow path 454 is associated with the suction passage The fourth flow path 456 is associated with the second part 40b of the path 40, and the first part of the suction passage 40 Please understand that this is related to minute 40a.

[0026] Additionally or alternatively, the suction passage 40 has two flow paths, namely, clean side flow path 45 It may be divided into 8 and a dirty side channel 460. The clean side channel 458 is an intake channel. Dirty side channel 460 is located between the pump 74 and the surgical waste container 70. It is positioned between the ultrasonic surgical handpiece 28 and the fluid backflow device 462. The backflow device 462 is installed in communication with the dirty side flow path 460, and clean side The ventilation mechanism 464 may be provided in a state that is in communication with the clean side flow path 458. The cleanside ventilation mechanism 464 is a first ventilation mechanism including a first ventilation valve 54. It is important to understand that this is acceptable. In some configurations, this system 42 is a second ventilation It is equipped with a second ventilation mechanism 461 including a valve 60. The fluid backflow device 462 is a diaphragm By introducing fresh air into the flow path 460, the system is implemented to promote the dissipation of suction pressure. This can be done. Referring to Figure 3, the "clean side" contains surgical waste (for example, tissue and body waste). The liquid is absent, and the "dirty side" contains surgical waste aspirated from the surgical site. "Cleanside" is a combination of a suction pump 74 (not shown in Figure 3) and a surgical waste container 70. It is in between. "Dirty Side" is an ultrasonic surgical handpiece 28 and a fluid backflow device 463 (Not shown in Figure 3) is between. In other words, in this configuration, the surgical waste container 70 is This can provide a functional boundary between the clean and dirty sides of the flow path. .

[0027] Through the second ventilation mechanism 461, the third portion 40c and / or dirty side channel 46 To allow direct ventilation to 0, fluid backflow device 462, gravity, suction direction (hand (and) the surgical waste tends to flow away from the fluid backflow device 462, and A combination of the dirty side channel 460 can be used. Features of these designs This ensures that surgical waste does not contaminate the second ventilation mechanism 461.

[0028] By providing multiple lines, passages, and / or portions of the suction passage 40, this system The advantage of stem 42 is the dual pressure adjustment by the first sensor 48 and the second sensor 57. Furthermore, another advantage of this system 42 is the 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. It is also positioned to monitor the pressure in the waste container. The second sensor 57 is suction The pressure in the second portion 40b of the pull passage 40 is sensed, and the ultrasonic surgical handpiece - It is positioned to monitor the suction pressure associated with the tip 30. This system 4 2, based on signals from the first and second sensors 48 and 57, controls the first vent valve 54 and It also includes a controller 102 that controls the second vent valve 60. Additionally or alternatively Specifically, the cleanside ventilation mechanism 464 may include a first ventilation valve 54. The body backflow device 462 is connected to a joint 44 that includes a joint valve or ball valve 86. It may be present. The first and second vent valves 54 and 60, when opened, allow air or fresh air to enter. It is introduced into the system 42 to eliminate the suction pressure. The first sensor 48 and the second sensor 57 The dual adjustment and blockage detection processes are described in detail below.

[0029] Through dual adjustment, system 42 controls the pressure in the surgical waste container 70 and the surgical site The pressure is adjusted. System 42 controls the various operations of the ultrasonic surgical handpiece 28. Responsiveness, wide overall suction control, fine adjustment of suction settings, and optimal suction performance. To improve this. For example, dual adjustment (e.g., use of a first ventilation mechanism and a second ventilation mechanism). Using this, a significantly lower suction level can be achieved. This allows the organization's " The suction power is significantly reduced. This is important to avoid damaging fragile tissue, the patient and hands. To provide comfort to the operator.

[0030] Using the ultrasonic surgical handpiece 28, liquid and solid substances are removed from the surgical site as waste. Once aspirated into line 38, surgical waste passes through joint 44 and pinch valve 62. And it flows. In this configuration, the suction passage 40 is open to the surgical waste container 70, and The force removes surgical waste from the second portion 40b of the suction passage 40. Second surgical waste container Port 448 is connected to the second surgical waste container connector 66, which is connected to filter 72. Filter 72, from the console's perspective, is used for surgical waste. It is located near container 70. Filter 72 was not captured by surgical waste container 70. It is designed to remove any remaining 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. Filter 72 can be easily discarded and replaced after surgery. Filter 72 is different from other filters. It is connected to console 20 via port 95, the first port.

[0031] Figure 4 shows an exploded view of cassette 34. In one configuration, the cassette is optional. This is also acceptable. In other words, the cassette 34 itself may be omitted, but the ultrasonic surgical device The line connecting endpiece 28 to the surgical waste container 70 is, like joint 44, It may include, as shown in Figure 4, the joint 44 is a ball valve 86, or optional. This includes other types of fluid backflow devices 462.

[0032] The ball valve 86 / fluid backflow device 462 draws from the second portion 40b of the suction passage 40. Allows air to pass through the third portion 40c of the passage 40, but the surgical handpiece Surgical waste or suction fluid does not enter the second portion 40b of the suction passage 40 from the tip 30. It is a one-way valve designed to prevent this. The ball valve 86 is opened by gravity when its ball is in the open position. It is biased to a certain position, and due to the influence of the fluid from the third portion 40c of the suction passage 40, it reaches the closed position. It is mounted so as to be pressed upwards. Also, adjacent to the ball valve 86 A chamber 88 is provided distally, and the suction passes through a ball valve 86 to the second suction passage 40. It holds surgical waste that enters portion 40b. Chamber 88 has an inclined bottom surface. It may be. When the ball of the ball valve 86 returns to its resting position, the chamber 88 tilts The bottom surface allows surgical waste that has passed through the ball valve 86 to enter the third part of the suction passage 40. Backflow to 40c. Use any type of valve instead of a ball valve for suction. The fluid flow in the second portion 40b of the channel 40 may be controlled.

[0033] As shown in Figures 4 to 5B, the cassette 34 is used to clean the console 20. The lines and suction lines can be routed more easily. In this configuration, the washing line 9 Both 0 and 92, as well as the suction passage 40, are contained within a single cassette 34. In a standard configuration, either the 90 or 92 cleaning line is provided, and the ultrasonic surgical handpiece is included. 28 can be connected to the cleaning source 91. In some configurations, the cleaning fluid line is a cassette. It can be routed to the ultrasonic surgical handpiece connector 26 via the 34. By including both the line and the suction line in the same cassette 34, the ultrasonic aspirator To simplify setup and operation. Also, the tube is pre-set inside cassette 34. This can lead to, for example, a misalignment of the pinch valve 62 with respect to the suction passage 40. This helps to avoid potential user errors.

[0034] Figures 5A and 5B show the cassette 34. The user requires one hand to operate it. Insert cassette 34 into console 20. This single action completes the process. The cassette RFID (radio frequency identification) tag 94 is used by the console. Detected by 20. This indicates that cassette 34 is fully inserted. Once cassette 34 is inserted and aligned, the pinch valve 62 can be activated. When the pinch valve 62 is activated, the third portion of the suction passage 40 held in the cassette 34 Compress the 40c tube.

[0035] As shown in Figures 7A and 7B, the console 20 is equipped with a cassette release button 500. It is being pushed. The cassette socket 76 responds to the pressing of the cassette release button 500. One or more suitable sensors that generate a signal, such as a Hall effect sensor, magnetic sensor, or other suitable sensor. The above sensor may also be included. In this configuration, as shown in Figure 7B, the cassette release button The 500 includes a magnet 93, and the cassette socket 76 includes a Hall effect sensor 89. It includes a circuit board assembly (PCBA) 99. The magnet 93 is inserted into the cassette 34. Helps detect whether a cassette 34 has been inserted and / or ejected. As the release button 500 is pressed down, the magnet 93 moves closer to the Hall effect sensor 89. This helps detect that cassette 34 is about to be ejected. In response to this, the system The TEM 42, controller 102, and / or PCBA 99 eject the cassette 34. First, open the pinch valve 62. This will allow the cassette 34 to be properly ejected. This guarantees that.

[0036] The cassette housing 84 is aligned with the pinch valve 62, as shown in Figure 5B, and is suction-resistant. The passage 40 includes an opening 85 above the tube that defines the third portion 40c of the passage 40. As shown in 5B, when cassette 34 is inserted into console 20, the cassette housing The opening 85 of 84 is located adjacent to the pinch valve 63. As shown in Figure 6, the pin When the valve is activated, the rod 172 is used to clamp the third portion 40C of the suction passage 40. It gets stuck. The pinch valve 62 prevents the suction pressure from reaching the tip 30 of the ultrasonic surgical handpiece. To do so. More specifically, the pinch valve 62 is connected to the tip 30 of the ultrasonic surgical handpiece. By ensuring the blocking of the high response of suction pressure, the degree of occlusion in the suction passage 40 affect.

[0037] Furthermore, the console 20 further includes a three-way solenoid valve 64, as shown in Figure 7A. It may be left as is. The three-way solenoid valve 64 controls the operation of the pinch valve 62. The three-way solenoid valve 64, via the first portion 40a of the suction passage 40, is connected to the suction pump It is connected to 74. The suction system 42 is activated and the surgical handpiece tip 30 is used to remove odors. Once the surgical waste is removed, the pinch valve 62 is controlled by the three-way solenoid valve 64. It is connected to the atmosphere. In this configuration, the pinch valve 62 is pneumatic and has a three-way sole The solenoid of the valve 64 is moved to open and close, and as shown in Figure 6, it sucks The suction pressure is applied to the pinch valve 62, coil 170, rod 172, gasket 174 and pump. It becomes possible to engage with the mechanical actuator 100, including the head 110. Other configurations Therefore, the pinch valve 62 is electrically operated, and the three-way solenoid valve 64 is unnecessary. .

[0038] With respect to the pinch valve 62 and the three-way solenoid valve 64, the suction system 42 is standard It can operate in one or more modes, including quasi-mode and synchronous mode. Standard mode Then, the pinch valve 62 and the three-way solenoid valve 64 control the surgical handpiece 28. The console operates similarly to whether or not foot pedal 32 is pressed to activate it. Whenever the power to the 20 is turned on, in standard mode, the ultrasonic surgical handpiece Suction is performed at the tip 30. In standard mode, the suction passage 40 is used via the pinch valve 62. The tip 30 of the surgical handpiece is openly connected to the surgical waste container 70 and the suction pump 74. If present, the pinch valve 62 remains stationary.

[0039] Specifically, in standard mode, the three-way solenoid valve 64 is always open to the atmosphere. This is closed to the suction pump 40. This prevents the suction pressure from reaching the surgical handpiece. It reaches the tip 30, enabling suction at the surgical site. Designed to be always on. Regarding the suction system, system 42 includes a three-way solenoid valve 64 or a pinch valve It can be manufactured without the B62.

[0040] A second potential operating mode for suction is synchronous mode. In synchronous mode, the foot If the pedal 32 is not pressed and the tip 30 of the surgical handpiece is vibrating, The suction pressure is not permitted to reach the surgical site. Specifically, when the foot pedal 32 is pressed... If the ultrasonic surgical handpiece tip 30 is not vibrating, the pinch valve 6 2 is in operation and the connection between the surgical handpiece tip 30 and the suction pump 74 is blocked. The pinch valve 62 is operated by a three-way solenoid valve 64. If the pedal 32 is not pressed, the solenoid of the 3-way solenoid valve 64 moves When moved, the pinch valve 62 is closed to the atmosphere and opened to the suction pump 40. This prevents suction pressure from reaching the tip 30 of the surgical handpiece and the surgical site. If the foot pedal 32 is not pressed down, the second vent valve 60 also allows air to flow to the atmosphere. In contrast, it opens up, rapidly eliminating the suction pressure at the surgical site.

[0041] In synchronous mode, the suction system 42 is activated when the foot pedal 32 is pressed for ultrasonic surgery. When operating the handpiece 28, it functions similarly to the standard mode described above. For example, If the inch valve 62 is stationary, when the foot pedal 32 is pressed, the suction passage 4 0 opens the connection between the tip 30 of the ultrasonic surgical handpiece and the suction pump 74.

[0042] The suction pump 74 selectively supplies pinch valve 62 via three-way solenoid valve 64. The pinch valve 62 is connected to the cassette 34, as shown in Figures 7A and 7B. It is connected to socket 76. In this configuration, the suction pump 74 is connected to the suction pump 74 It uses a dual diaphragm design that keeps the element separated from the pressurized air. In addition, the two diaphragms, for each stroke of the piston, a single diaphragm... It supplies twice the airflow of the ram, allowing the suction pump 74 to operate at a lower speed. In this configuration, the pump head 110 reduces mechanical pumping noise. It may also be a tick. As shown in Figure 5, the pump heads 110 are arranged in series and suck Shorten the length of the suction passage 40. Shorten the length of the tube near the suction pump 74. This limits the possibility of the tube vibrating and generating undesirable noise.

[0043] Figure 7B includes the first vent valve 54, the second vent valve 60, and the controller 102. Yes, it shows the suction manifold 36. Figure 7B also shows the user inserting the cassette 34. This shows the cassette socket 76. As also shown in Figure 7B, cassette 3 Socket 76 of 4 includes an opening for pinch valve 62. Cassette 34 is suitable. When fully inserted, the opening 85 in the cassette housing 84 becomes the opening of the socket 76. This alignment allows the pinch valve 62 to engage with the line of the suction passage 40.

[0044] Figures 7C and 8 are alternative enlarged views of the suction manifold 36. Suction manifold 36 consists of a first sensor 48, a second sensor 57, a first ventilation valve 54, and a second ventilation valve. This configuration includes a 60 and a printed circuit board 102. The first sensor 48, which includes a gauge pressure sensor 52a, is the first in the surgical waste container 70 A suction pressure of 180 is determined, and the waste container pressure signal 1 is measured based on the first suction pressure of 180. 32 is available for generating. Similarly, differential pressure sensor 50b and gauge pressure sensor 52 The second sensor 57, which includes b, determines and measures the second suction pressure 182 at the surgical site. It is available to generate the tip pressure signal 133. Both of these signals are used in this configuration In the final configuration, it is supplied to the controller 102, which is a printed circuit board 102, and the first vent valve It controls the 54 and the second vent valve 60.

[0045] The suction manifold 36 receives the suction from the suction pump 74 to the suction passage 40 and the pinch valve 62. It helps to divide the airflow. Using differential pressure sensors 50a and 50b, the suction passage 40 The pressure or flow rate in section 40a and section 40b can be monitored. In addition or alternatively, gauge pressure sensors 52a, 52b are used to control the first portion 40a and The pressure in the second section 40b can be monitored. Machining shown in Figures 7A to 7C Manifold 104, as with any other valves and mufflers, has the first vent valve 54 and By manipulating ventilation to the atmosphere via the second ventilation valve 60, the suction passage 4 The suction flow is distributed between the first portion 40a and the second portion 40b of 0.

[0046] The main muffler 106 shown in Figures 7A to 7C is used for pumping exhaust from the suction pump 74. Reduce noise. Pulsating exhaust is one of the biggest noise sources in System 42. Yes. In this configuration, the mechanical actuator 100 has a large cross-sectional flow path and a pinch bar. This allows the suction pressure in Lube 62 to be rapidly released into the atmosphere. This allows the valve 62 to quickly return to its open position.

[0047] Figure 9 is a schematic diagram of an exemplary pressure sensor. In this example, a 15 PSI sensor is used for suction. It is connected to passage 40. Measurement of the suction passage 40 is performed by differential pressure sensors 50a, 50b, and This can be done using the pressure sensors 52a and 52b. The first and second sensors 48, 57 outputs a voltage representing pressure. In this configuration, the voltage signal has an adjustable gain. The signal is then sent to amplifier 120, which is an operational amplifier. The sensed signal is then sent from the signal The signal passes through a low-pass filter 122 to reduce noise. In this configuration, the low-pass filter 122 includes capacitor 123 and resistor 124. Finally, the signal is rectified by rectifier 12 Processed by 5 to generate a corrected signal. The corrected signal is also processed by controller 102. The processing of the sensed signal is indicated to use specific hardware. However, this may be done using general-purpose hardware and software.

[0048] II. Double adjustment To improve the control responsiveness during suction, the console 20, more specifically, the suction manifold, Hold 36 includes the first vent valve 54, the first sensor 48, the second vent valve 60, and It also includes a second sensor 57. As described above, the first vent valve 54 is clean It may be associated with a side ventilation mechanism. The first ventilation valve 54 is of the suction passage 40 The second vent valve 60 is positioned along the first section 40a and is located in the second section of the suction passage 40. Located at the end of minute 40b, or proximal to the fluid backflow device 462, and adjusting the suction system 42. do.

[0049] The console 20 may include the controller 102. First and second sensors 4 8,57 is connected to controller 102 to provide dual adjustment of system 42. The controller 102 controls the first and second vent valves 54, 60 to control the suction system 4 It is configured to adjust the suction level in 2. More specifically, the controller Based on the outputs of the first sensor 48 and the second sensor 57, 102 controls the first vent valve The position of the 54 and the position of the second vent valve 60 are configured to be controlled independently. Yes, they are.

[0050] Adjustments to both the first ventilation valve 54 and the second ventilation valve 60 are made at the surgical site. This helps maintain the desired suction pressure. In this configuration, the first vent valve 54 and the second The ventilation valve 60 is a variable flow iDP (intelligent diagnostic positioner) valve. Yes. The airflow passing through the first vent valve 54 and the second vent valve 40 is controlled The first PID (proportional-integral-derivative) control loop 126 and the second PID control loop of La 102 The current controlled by 128 is proportional. First and second PID control loops 126,1 Point 28 will be explained in detail below.

[0051] The first sensor 48 is positioned along the first portion 40a of the suction passage 40, and surgical waste To effectively sense the pressure in container 70. Also, to enable faster, more responsive control. Therefore, the second sensor 57 and the second ventilation valve 60 are located in the second portion 40b of the suction passage 40. It is included in accordance with the following.

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

[0053] Based on the signal supplied by the first sensor 48, the first ventilation valve 54 will turn on the atmosphere It may be arranged to open the suction passage 40 to the second ventilation valve. The opening of the b60 causes the tip 30 of the ultrasonic surgical handpiece 28 to Even if the response speed is slower than the decrease in suction pressure in the suction passage 40, the first part 40a of the suction passage 40, and And ultimately reduces the suction pressure throughout the suction passage 40. The first vent valve 54 It may also be a variable valve that operates mechanically, electrically, or pneumatically.

[0054] A first sensor 48 and a first ventilation are arranged along the first portion 40a of the suction passage 40. The combination of valves 54 helps to control the suction pressure at the surgical site. However, Furthermore, the control provided by the first vent valve 54 is for the large-capacity surgical waste container 70, suction The first portion 40a of the pull passage 40 and the third portion 40c of the suction passage 40 allow the system The first part of the suction passage 40 may be slow to respond to pressure changes in 42. 0a, and compliance of the third portion 40c of the suction passage 40 (the first portion of the suction passage 40) The expansion and contraction of portion 40a and the third portion 40 of the suction passage 40 exacerbates the problem. The reason is that the lines defining parts 40a, 40b and 40c of the suction passage 40 are expanded, This is because the capacity can increase further as the pressure changes in stem 42.

[0055] To improve control responsiveness, the second sensor 57 and the second vent valve 60 are suction-assisted. It is included along the second portion 40b of the passage 40. Similar to the first sensor 48, the second 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 pressure sensors, temperature sensors, ultrasonic sensors, and Any type of sensor, including but not limited to gas sensors, may be used. Please understand the following. The first sensor 48 and the second sensor 57 are equipped with any number of individual sensors. I want you to understand that it's okay to be like that.

[0056] The second sensor 57 effectively detects the second suction pressure 182 at the tip 30 of the surgical handpiece. It is configured to detect. The measurement from the second sensor 57 is sent to controller 1 A signal is transmitted to 02 to control the second vent valve 60, and the second part of the suction passage 40 is directed towards the atmosphere. This is used to generate a second input signal 233, which selectively opens minute 40b.

[0057] The second ventilation valve 60 is operable to open the suction passage 40 to the atmosphere. This reduces the pressure at a location close to the suction passage 40 or the fluid backflow device 462. Specifically, the second vent valve 60 is located at the end 47 of the second portion 40b of the suction passage 40. It is placed there. In this configuration, the second vent valve 60 also compares with the second sensor 57. It is located distally. The second vent valve 60 is the same as or different from the first vent valve 54. That's fine.

[0058] During one configuration or a specific mode, the suction pressure in the ultrasonic surgical handpiece 28 This is fully controlled by the second vent valve 60. In this configuration, system 42 This provides a sense of lower pressure suction settings, thereby enabling the ultrasonic surgical handpiece 2 The pressure is lower at the tip 30 of 8, between the cassette 34 and the surgical waste container 70. The suction line is cleared more quickly while clogging is reduced. Using the second sensor 57. Then, the system 42 monitors the pressure at the tip 30 of the surgical handpiece 28. This allows the system 42 to detect any blockages that may occur in the suction line. This becomes possible. The measurement from the second sensor 57 represents the pressure at the tip 30. This may be done to estimate the flow rate at the tip 30 of the surgical handpiece 28. It can be used for this purpose. Once the flow rate is estimated, system 42 checks for possible blockages. It can be detected. System 42 can detect potential blockages in System 42. This helps maintain an ideal state during surgery and optimize the required ultrasound energy. Keru.

[0059] The second suction pressure 182 is less affected by the large-capacity surgical waste container 70, and therefore, Even if the second sensor 57 is also located on the console 20, the measurement from the second sensor 57 The value better represents the actual pressure at the tip 30 of the ultrasonic surgical handpiece 28. By controlling the second ventilation valve 60, the tip 30 of the surgical handpiece can be controlled. When controlling the pressure, it provides a faster response than controlling the first vent valve 54. The volume between the tip of the piece 30 and the second vent valve 60 is determined by the placement of the first vent valve 54. The volume between the surgical waste container 70 and the first portion 40a of the suction passage 40 is greater than the volume between the two. Because it is much smaller, faster control is achieved. This also applies to large-capacity surgical waste containers. Compared to 70, the second vent valve 60 is closer to the tip 30 of the ultrasonic surgical handpiece 28. It is painful. Also, the second part 40b of the suction passage 40 is the first part 40 of the suction passage 40 Because it has a much smaller volume than a, the second portion 40b of the suction passage 40 follows It has low rigidity and is less likely to deform as a result of suction pressure.

[0060] The suction control algorithm represents the pressure in both the tip 30 and the surgical waste container 70. The signal is used to change the current supplied to the first vent valve 54 and the second vent valve 69. By doing so, the suction is dynamically adjusted, thereby controlling the pressure and flow in system 42. Change the quantity.

[0061] Figure 10 shows how to control the suction pressure in the ultrasonic surgical handpiece 28. A control system 42 used to improve the control response of the endpiece 28 during operation. The following is a block diagram of part of the controller 102. First and second PID control loops. Use 126 and 128 to adjust the pressure in the suction passage 40. First and second PI The D controllers 152 and 154 use several inputs to determine the first ventilation current 164 and The first and second ventilation currents 166 are output respectively, and the positions of the first and second ventilation valves 54 and 60 are set. Adjust as needed.

[0062] The signals from the first and second sensors 48 and 58 are used to obtain the first and second input signals 232 and 23 3 is supplied. In one configuration, the first input signal 232 is the measured waste container pressure signal. The second input signal 233 is the measured tip pressure signal 133, which is signal 132. Inputs include: maximum waste container pressure signal 138, minimum handpiece pressure signal 136, tip blockage. The signal may include a suction setting value of 140 and a foot pedal setting value of 142. This will be explained in detail below.

[0063] Data is read from the first and second sensors 48 and 57, and the first and second vent valves are controlled. By connecting to 54 and 60 via an interface, the first and second PID control routes P126,128 actively changes the current supply to the first and second vent valves 54,60. This improves the system's responsiveness. Furthermore, the first and second sensors are flow meters. In certain configurations, measurements from the first and second sensors 48 and 57 are used to control the controller. 102 monitors the overall flow rate of system 42 and detects any blockages that may occur in the suction line. This makes it possible to remove the blockage. The detection of blockages in system 42 is described in detail below. .

[0064] The first PID control loop 126 relates to the pressure in the first portion 40a of the suction passage 40. It receives input and, therefore adjusts the suction level maintained in the surgical waste container 70. This is responsible for ensuring that the pinch valve 62 is operational (it may be necessary as needed). It is controlled by air pressure and engages using the pressure generated by the suction pump 74. (to do so) and control the maximum suction volume available in the suction system 42 for a predetermined time. The time scale of the pressure-controlled response in the first portion 40a of the suction passage 40 is the time scale of the surgical waste. This is primarily determined by the amount of air available within the container 70.

[0065] Referring to Figure 10, the first PID control loop 126 controls the first vent valve 54. It is implemented in such a way. In the first PID control loop 126, the actual pressure measurement is, This is obtained from a first sensor 48 connected to the first portion 40a of the suction passage 40. The first sensor 48 then outputs a voltage based on the measured pressure. This voltage is... The pressure can be converted to a pressure measurement using the pressure-to-pressure converter 130. The signal is the measured waste container pressure signal 132.

[0066] The target waste container pressure signal 134 is transmitted in addition to the power set value from console 20, for each operation. The tip of the handpiece 30, the ultrasonic surgical handpiece 28, or the console 20 are stored in the handpiece tip 30, the ultrasonic surgical handpiece 28, or the console 20. It is determined based on parameters or information that can be used. In this configuration, the target waste volume The instrument pressure signal 134 corresponds to the suction setting value 140, the minimum handpiece pressure signal 136, and the maximum discharge value. It is calculated from the waste container pressure signal 138. Once the target waste container pressure signal 134 is calculated, The target waste container pressure signal 134 is measured by the first combiner. This is combined with the negative value of the waste container pressure signal 132. Between the two signals 134 and 132 The difference is the waste container pressure error signal 148. In other configurations, the target waste container pressure signal 1 34 relates to the measured waste container error signal 132 and waste container pressure error signal 148. Then, comparison, combination, summation, etc. may be performed. The waste container pressure error signal 148 is the first P It is supplied to the ID controller 152.

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

[0068] Furthermore, the first PID controller 152 controls the maximum first ventilation current 156 and the minimum first A signal indicating a current of 158 is received. Then, the first PID controller 152 This outputs a first ventilation current 164 that opens and closes the first ventilation valve 54. In this configuration, The first venting current 164 is converted to a larger current, which opens the first venting valve 54 more. A smaller current will close the first vent valve 54 more.

[0069] In one configuration, there are two parameters: namely, the maximum waste container pressure of 138 and the minimum hand pressure. The piece pressure 136 is associated with an RFID tag or the tip 30 of each surgical handpiece. It is stored in other memory devices. Specifically, RFID tags are stored in each surgical hand The sleeve associated with the tip 30 of the piece may be included. Additionally or alternatively The controller 102 may include a memory device 168. The memory device associated with tip 30 is associated with controller 102. Please understand that it may be the same as or different from Mori Device 168. System 42 is It should be further understood that it may include any number of memory devices.

[0070] The maximum waste container pressure is applied to the surgical handpiece tip 30 or the sleeve associated with each tip. By storing the force 138 and the minimum handpiece pressure 136, the surgical hand used Many aspects of the system are changed depending on the endpiece tip 30, thus a better system The maximum pressure achievable by the system is determined by the rate at which the suction pressure is released. Each surgical handpiece tip 30 has different suction characteristics, thereby the first When the first vent valve 54 and the second vent valve 60 are fully open and / or fully closed, different It has a steady-state pressure. Each of the surgical handpiece tips 30 has a different length and different Pre-aspiration hole configurations, different sleeve sizes, and It is possible to have all different geometric elements together. This allows for absolute minimum settings. Provides a value and absolute maximum setting. Controls across the full range available for each different tip. Therefore, RFID tags or other memory devices are used in the suction control system. The meter is held. The control system allows a maximum waste container pressure of 138, and control The minimum tip pressure 136 is the minimum allowable by the system. The maximum waste container pressure signal 138 is shown in Figure 1. At 0, the pressure range is already expressed taking into account the maximum waste container pressure signal 138. ru.

[0071] The maximum waste container pressure signal 138 is usually indicating that the tip 30 of the ultrasonic surgical handpiece is obstructed. Without doing so, the highest achievable with the first vent valve 54 and the second vent valve 60 fully closed It's pressure. In some cases, the tip opens to its maximum, resulting in the lowest suction and the highest suction. Given the minimum pressure difference between the two conditions, the maximum achievable pressure is higher than the maximum waste container pressure. It will be set.

[0072] The minimum achievable steady-state suction pressure is when the first and second vent valves 54 and 60 are fully open. The surgical handpiece tip 30 is attached to the surgical handpiece 28 and console 20. In this state, the second sensor 57 obtained from the second portion 40b of the suction passage 40. This is a measured value. This value is used to set the minimum possible ventilation side pressure setting. Without this, many of the low-pressure settings in suction would be indistinguishable from one another. That is, The pressure setting point is always below the measured pressure, and the first and second vent valves 54, 60 Leaving it at full power will never allow you to reach the desired setting point.

[0073] Returning to Figure 10, the second PID control loop 128 is supercharged via the second vent valve 60. Used for high-speed control of suction pressure available at the tip 30 of the ultrasonic surgical handpiece, suction load This allows for a constant suction pressure even in situations where the obstruction is rapidly changing. Desirable for the delicate, precise, and high-speed control of the suction force at the tip. The time scale of pressure changes is much faster than the time scale of the waste container, and the second sensor 57 is limited only by the volume of the tube connecting to the tip 30 of the surgical handpiece. This second PID control loop 128 has inputs similar to the first PID control loop 126 and It works in a similar way.

[0074] In the second PID control loop 128, the actual pressure measurement is taken from the second part of the suction passage 40. The second sensor 57 is connected to 40b or communicates with the dirty side channel 460. In this example, the second sensor 57 outputs a voltage signal based on the measured pressure. This voltage signal is converted to a pressure measurement using a second voltage-to-pressure converter 131. This is possible. The measured tip pressure signal 133 is transmitted by the second coupler 146 to the target tip pressure. It is coupled with the force signal 135. The target tip pressure signal 135 is coupled to the tip of each surgical handpiece. It is determined based on parameters stored in the connected memory device.

[0075] Additionally or alternatively, the target tip pressure signal 135 may be based on the tip clogging threshold. Good. The tip blockage threshold is a memory device associated with the tip of each surgical handpiece. or parameters stored in memory 168 associated with controller 102 This is also fine. Once the tip blockage threshold is determined, the system 42 uses the operation routine 300 The system then enters the blockage detection system, and if a blockage is detected inside the ultrasonic surgical handpiece 28, The decision is made as to whether or not to proceed. Operation routine 300 is described in detail below.

[0076] The second PID control loop 128 has a suction setting value of 140, a foot pedal setting value of 142, and the most Target tip pressure 1 from small handpiece pressure signal 136 and maximum waste container pressure signal 138 35 is calculated, and the target tip pressure signal 135 is combined with the measured tip pressure signal 133. A tip pressure error signal 150 is generated. The tip pressure error signal 150 is then used with the tip pressure signal 133. Please understand that this is a tip error signal 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 hand The piece pressure error signal is 150. The tip pressure error signal 150 is the second PID controller. It is supplied to the RA154. The second PID controller 154 also supplies the second vent valve 6 A signal indicating the maximum second airflow current 160 and the minimum second airflow current 162 with respect to 0. The second PID controller 154 opens and closes the second vent valve 60. It outputs a second ventilation current 166. In this configuration, the second ventilation current 166 is inverted, A larger second vent current 166 opens the second vent valve 60 more, and a smaller second vent current The gas current 166 further closes the second vent valve 60.

[0077] The positions of the first and second vent valves 54 and 60 are determined by the memory device of the console 20. It can be stored in S168. Instead, the first and second vent valves 54, 60 The position is between the measured waste container pressure signal 132 and the target waste container pressure signal 134. and comparison, combination, and evaluation between the measured tip pressure signal 133 and the target tip pressure signal 135. They may be based on values ​​or mathematical relationships, respectively.

[0078] Figure 11 shows how the target pressure signal can be set, and what such a signal is How to set the suction setting to 140, the minimum handpiece pressure signal to 136, and the maximum waste container pressure This shows an example of what can be related to signal 138. Minimum handpiece pressure 136 In addition to the maximum waste container pressure of 138, Figure 11 shows two other points to consider. The line representing the actual waste container pressure and the target waste container pressure is indicated by LP. There is a low point. While controlled at a very low suction setting, the waste container pressure is constantly below the target waste level. There is a point LP where the material container pressure remains higher than 134. This is because system 42 is second vent This means that it is completely controlled by valve 60. In this scenario, sys The Tem 42 has lower pressure at tip 30, providing a sense of lower suction settings. Meanwhile, the suction line between cassette 34 and surgical waste container 70 is cleared more quickly. This reduces clogging.

[0079] At the upper limit of the point indicated on the HP on the line representing the actual and target handpiece pressure Then, the second vent valve 60 is completely closed, allowing for a change to a higher pressure. Surgical waste container The main air pressure capacity of 70 has already been sufficiently discharged, and the tube of the second part 40b of the suction passage 40 This response is fast because it consists entirely of what remains within itself. This allows for higher setting values, enabling the rapid achievement of desired higher pressures. Under this load, the pressure of system 42 quickly matches the upper limit of the control target.

[0080] Finally, as can be seen from the graph in Figure 11 and the schematic diagram in Figure 12, system 42 is suction High pressure is maintained in the first part 40a of the suction passage 40 from the second part 40b of the passage 40. It may be designed to do so. Additionally or alternatively, the "dirty side" of system 42 Higher pressure is maintained in the "clean side" than in the "D" area, and two surgical waste containers 70 It provides a functional boundary between the sides. In other words, the surgical waste container 70 and the filter 72 The pressure is maintained higher from the suction pump 74, while the surgical handpiece tip 30 and The remaining portion of the suction passage 40 is maintained at a lower pressure. The pressure difference is passed through the first and second vent valves. The second vent valve 60 is maintained by the controller 102 that controls valves 54 and 60. When air enters the second portion 40b of the suction passage 40 through the surgical handpiece tip, At point 30, the pressure drops rapidly.

[0081] Figure 12 shows a schematic diagram of a suction system using a schematic electrical connection representing air resistance. As shown in the diagram, there are three connections between one side of the surgical waste container 70 and the pinch valve 62. Components (cleanside tube, filter 72, and surgical waste container / canister) There is a dirty tube. On the other hand, between the pinch valve 62 and the surgical waste container 70 there is a dirty tube. There is a side tube. The "Dirty Side" has two dirty side tubes, and a A valve 86 and a fluid backflow device 462 are provided. A second sensor 57 (differential pressure sensor) is also provided. The second ventilation valve 60 and the diffuser include, It is installed in communication with the ball valve 86 / fluid backflow device 462. The "ID" includes a suction pump 74, a first sensor 48 (differential pressure sensor 50a and gauge pressure sensor) (Including 52a), cleanside tube, filter 72, and surgical waste container / canister A suction filter is provided. The muffler filter is in communication with the suction pump 74. It is provided.

[0082] Due to the air resistance of the large-capacity surgical waste container 70 and system 42, the suction passage 40 Even if all parts are connected, in the first part 40a of the suction passage 40 for a predetermined time This allows for the maintenance of higher pressure. The pressure difference is transmitted to the first portion 40a of the suction passage 40 during surgery. This helps ensure that no waste enters. This is the filter 72 and suction pump. This is important because the tubing between 74 and 74 is not exchanged between patients.

[0083] III. Clogging Detection During operation of the ultrasonic surgical handpiece 28, a common problem is the ultrasonic surgical hand This occurs due to a blockage or obstruction at the tip 30 of the piece. While the tip 30 is blocked, the suction pump 74 continues to operate, and suction pressure accumulates inside the ultrasonic surgical handpiece 28. Eventually, it clogs When the pressure is released, it decreases, so a large amount of surgical waste is sucked in too rapidly. This is known as a post-occlusion surge. See Figure 13. Accordingly, the system may implement an operation routine 300 that determines whether clogging is detected within the surgical handpiece 28 . The operation routine 300 is designed to reduce and / or prevent surges.

[0084] By interfacing with measurements from the first sensor 48 and the second sensor 57, and with the first vent valve 54 and the second vent valve 60 respectively, the operation routine 300 determines whether clogging is detected within the surgical handpiece 28 via the following steps. In one configuration, the measurements from the first and second sensors 48, 57 may be a first flow rate and a second flow rate, respectively. determines whether clogging is detected within the surgical handpiece 28 via the following steps. In one configuration, the measurements from the first and second sensors 48, 57 may be a first flow rate and a second flow rate, respectively. 1. In one configuration, the measurements from the first and second sensors 48, 57 may be a first flow rate and a second flow rate, respectively.

[0085] Other advantages of the system 42 implementing the operation routine 300 include, but are not limited to, maintaining an ideal tissue resection rate , automatically adjusting suction to maintain an ideal flow rate for ultrasonic tissue resection, alerting a user of potential clogging, and automatically clearing clogging within the system , automatically adjusting suction to maintain an ideal flow rate for ultrasonic tissue resection, alerting a user of potential clogging, and automatically clearing clogging within the system include, but are not limited to.

[0086] Referring to FIGS. 2 and 10 in addition to FIG. 13, the operation routine 300 starts at step 301, where a tip clogging threshold is provided. In one configuration, when the system 42 is turned on and a surgical handpiece tip is attached , the tip clogging threshold is calculated from a maximum pressure based on a maximum no-load open loop response . In another configuration, the tip clogging threshold is a parameter stored in a memory device associated with each surgical handpiece tip, such as a memory sleeve device disposed on a sleeve associated with the tip a parameter stored in a memory device associated with each surgical handpiece tip. The tip clogging threshold can assist in determining potential clogging.

[0087] In step 302, system 42 enters the jam control loop. In step 304, The actual pressure measurements are obtained from the first sensor 48 and the second sensor 57. In this configuration, the first sensor 48 and the second sensor 57 are differential pressure sensors 50a and differential pressure sensors, respectively. A pressure sensor 50b may also be used. In other configurations, a first sensor 48 and a second sensor 57 This could be a flow sensor.

[0088] Then, in step 306, the first or second PID pressure control loops 126,128 Using either method, the measurements from the first and second sensors 48 and 57 are used to obtain a first predetermined parameter. It can be compared with the data. The first predetermined parameter is the memo associated with tip 30. It may be stored in a redevice or in the memory device 168 of the controller 102. The tip blockage threshold is greater than the first predetermined parameter, and the suction setting value 140 is a predetermined part If it is greater than the centage limit, the operation routine 300 proceeds to step 308. The percentage limit is the memory device associated with the surgical handpiece tip 30, or This may also be the percentage stored in the memory device 168 of the controller 102. .

[0089] In step 308, the controller 102 can be used within the surgical handpiece 28. The operation routine 300 proceeds to step 310, indicating that a blockage has been detected.

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

[0091] Subsequently, in step 312, based on the pressure measurements from the first and second sensors 48 and 57 Then, the first and second flow rates are estimated, respectively. In one configuration, the controller 102 is Based on the input signal from the differential pressure sensor 50a, the first flow rate can be estimated. The controller 102 then estimates a second flow rate based on the input signal from the differential pressure sensor 50b. It can be determined. Instead, the first sensor 48 and the second sensor 57 are flow-metered. In this configuration, the controller 102 receives the flow from the first and second sensors 48 and 57. Based on the measured values, 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 performs the following: The position of the first vent valve 54 may be repeatedly evaluated. In step 314, the first vent If the gas valve 54 is closed, the operation routine 300 proceeds to step 316, the first The flow rate is set to 0. If the first vent valve 54 is open, the operation routine 300 is Proceed to step 318.

[0093] In step 318, the second suction pressure 182 is evaluated and the second flow rate is calibrated. If the second suction pressure 182 at sensor 57 is less than the second predetermined parameter, The production routine 300 proceeds to step 320, where the second flow rate is set to 0. The parameters are stored in one of the memory devices 168 or 169 mentioned above. may be. In one configuration, the second predetermined parameter is pounds per square inch (PS I), which is a unit of pressure representing force per unit area. For example, the second predetermined parameter may be 0.005 PSI.

[0094] After the first flow rate and the second flow rate are calibrated, in step 322, the controller 102 estimates the tip flow rate based on the second flow rate. Then, the controller 102 uses the input from a timer to continuously evaluate the tip flow rate during a first predetermined time interval and determine an average tip flow rate . As described above, the measurement from the second sensor 57 is more representative of the actual measurement at the surgical handpiece tip 30 , and therefore the tip flow rate can be estimated from the second flow rate . As shown in FIG. 10, the timer is connected to the controller 102. The timer is operable to time the duration of a tip clogging signal.

[0095] The average tip flow rate can be calculated from a moving average of the tip flow rates. In other words, the control ler 102 samples the tip flow rate during the first predetermined time interval, and stores a specific number of tip flow rate measurement values in a rolling window. After the specific number of tip flow rates are stored in the rolling window, the newest sample of the tip flow rate replaces 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. Accordingly, the moving average is calculated for five tip flow rate samples per second, and each tip flow rate is discarded every 3 seconds . The predetermined time interval may be stored in a memory device associated with the tip 30 of the ultrasonic surgical handpiece 28 , the memory 168 associated with the controller 102, or any other memo Please understand that it may be stored in the library.

[0096] In step 324, the average tip flow rate is compared to the tip clogging threshold. If it is less than the tip-clogging threshold, the operation routine 300 proceeds to step 328. If the end flow rate is greater than the end clogging threshold, the operation routine 300 proceeds to step 326. The timer is reset or cleared, and the tip blockage signal is reset. In other words... Then, the controller 102 will determine that there is no blockage in the surgical handpiece 28. The determination is made, and the operation routine 300 returns to step 302.

[0097] In other configurations, the average tip flow rate may be compared with a third predetermined parameter. The parameter may be a parameter stored in one 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, Then, the timer and tip blockage signal are reset or cleared. The operation routine 300 is Return to step 302.

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

[0099] Next, using a timer, the operation routine 300, in step 332, the second part The average tip flow rate is evaluated over a fixed time interval. If the tip blockage threshold or a third predetermined parameter is smaller during this time, the controller 102 In step 334, a tip blockage signal is output.

[0100] If a tip blockage signal is output from the operation routine 300, the controller 102 will: A blockage has been detected in the surgical handpiece 28 or in the tip of the surgical handpiece 28. This indicates that the user and / or controller then remove the blockage and achieve ideal tissue separation. The next step in maintaining the divisor can be determined. In one configuration, the tip-clogging signal If the output is present, the controller 102 will automatically adjust the positions of the first and second ventilation valves. Adjust to control the suction level of the suction pump 74, and set the suction value or any combination thereof. The timing may be adjusted. For example, as shown in Figure 10, the tip blockage signal is the second PID This is one of the inputs to the controller. The controller 102 receives the input of the tip blockage signal. The position of the second ventilation valve 60 may then be controlled.

[0101] If a tip blockage signal is output in step 334, the operation routine 300 will Returning to step 302, the operation routine 300 can return to the control loop. Therefore, the system 42 automatically implements the operation routine 300 and the surgical handpiece 28 This makes it possible to detect blockages that may occur inside.

[0102] The words "include", "includes", and "include" The terms are "comprise", "comprises", and "comprises" Please understand that this term has the same meaning as "ing."

[0103] For the purposes of describing this specification, this disclosure does not, unless expressly otherwise specified, Please understand that various alternative approaches can be considered. These are illustrated in the attached drawings and the following: The specific devices and processes described in this specification are merely the embodiment of the inventive concept as defined herein. It should also be understood that this is an illustrative configuration. Therefore, regarding the configuration disclosed herein , specific dimensions and other physical properties are as expressly specified in the claims, This should not be considered to be the sole limiting factor.

[0104] Bullet points (Clauses): 1. Improve control response during suction by controlling the suction pressure in the ultrasonic surgical handpiece. A suction system, A controller, a suction pump, and a first ultrasonic surgical handpiece are fluid-connected to the aforementioned ultrasonic surgical handpiece. Sensor, fluid backflow device, second sensor, cleanside ventilation mechanism, and second ventilation mechanism Equipped with a console, The controller, based on the input signal from the first sensor, controls the clean side It is configured to control the ventilation mechanism, The controller controls the second ventilation mechanism based on the input signal from the second sensor. Configured to control, Suction system.

[0105] 2. Improve the control response during suction by controlling the suction pressure in the ultrasonic surgical handpiece. A suction system, A controller, a suction pump, and a first ultrasonic surgical handpiece are fluid-connected to the aforementioned ultrasonic surgical handpiece. The suction system comprises a console including a ventilation mechanism and a second ventilation mechanism, and the suction system is used for surgical waste It is configured to be positioned in a manner that communicates with the waste container. The controller is used to aspirate liquid and solid substances that have passed through the surgical handpiece. The controller is configured to respond by controlling the second ventilation mechanism, and This controls the first ventilation mechanism to maintain the desired pressure in the surgical waste container. It is configured in such a way. Suction system.

[0106] 3. A suction system for controlling suction pressure in an ultrasonic surgical handpiece, Suction pump and The first joint port, the second joint port, and the third joint port are defined. The first joint port extends from the ultrasonic surgical handpiece. A joint that connects the roads, It is connected to the second joint port and also to the surgical waste container port. The second flow path, A third flow path connected to the third joint port, A fourth channel connected to the second surgical waste container port, A first sensor connected to the fourth flow path and configured to supply a first signal, A second sensor connected to the third flow path and configured to supply a second signal, Based on the first signal and the second signal, a tip blockage signal is output, and A controller configured to control the suction pump based on the tip blockage signal, , A suction system is provided.

[0107] 4. A suction system for controlling suction pressure in an ultrasonic surgical handpiece, A console including a suction pump, The first joint port, the second joint port, and the third joint port are defined. The first joint port extends from the ultrasonic surgical handpiece. A joint connected to the road, It is connected to the second joint port and also to the surgical waste container port. The second flow path, A third flow path connected to the third joint port, A fourth channel connected to the second surgical waste container port, A first sensor connected to the fourth flow path and configured to supply a first signal, A second sensor connected to the third flow path and configured to supply a second signal, A first vent valve connected to the fourth flow path, A second vent valve connected to the third flow path, Based on the first signal, the first flow rate is determined, and based on the second signal, the Determine the flow rate of 2 and output a tip blockage signal based on the first signal and the second signal. Based on the tip blockage signal, the position of the first vent valve and / or the second vent valve A controller configured to control the position of the gas valve, A suction system is provided.

[0108] 5. A method for controlling the suction pressure in an ultrasonic surgical handpiece, A step of driving a suction pump to generate suction pressure within the suction system, Dirty side channel positioned between the ultrasonic surgical handpiece and the fluid backflow device. The first step of determining the flow rate, The second flow rate of the cleanside channel located between the suction pump and the surgical waste container The steps to determine, A tip blockage signal is generated based on the average tip flow rate derived from the first and second flow rates. The steps to output, The steps include controlling the suction pump based on the tip blockage signal, A method for providing it.

[0109] 6. Define the cassette insertion slot and include two pneumatic console ports within it. The console and The pneumatic console port is connected to or integrated with the console. A suction source communicating with one side of the torch, A first pressure is integrated into the console and communicates with the other of the pneumatic console ports. Force sensor and, A second pressure is integrated into the console and communicates with one of the pneumatic console ports. Force sensor and, A cassette is selectively and slidably disposed within the cassette insertion opening, Equipped with, The aforementioned cassette is Within it is a housing that is essentially rigid and defines the chamber, The fluid transfer section of the pump, including the suction side and discharge side of the pump, A plurality of fluid passages, at least partially located within the chamber, Equipped with, The aforementioned plurality of fluid passages are Including a first end connected to the suction side and a second end connected to the supply fluid container. The first fluid passage and Including a first end connected to the discharge side and a second end connected to the handpiece. And the second fluid passage, The first end connected to the handpiece and the second end connected to the waste container The third fluid passage included, The first end connected to the first console connector of the housing, and the waste The first console connector includes a second end that connects to the container, and the cassette When inserted into the cassette insertion slot, one of the pneumatic console ports is pneumatically A fourth fluid passage having a first pneumatic connector port to which it is connected, The first end connected to the third fluid passage, and the second console of the housing Having a second end connected to a connector, the second console connector is the cassette When the cassette is inserted into the cassette insertion slot, air pressure is supplied to the other side of the pneumatic console port. A fifth fluid passage having a second pneumatic connector port to which it is directly connected, Equipped with, Fluid management system.

[0110] 7. A method using a surgical irrigation cassette, A substantially rigid housing that defines the chamber, located outside the housing. Compressible peristaltic pump tubes, and at least partially disposed in the chamber Each of the multiple fluid passages is the first of the pump tube. A first end, which is connected to the end of the first fluid container, and a second end, which is connected to the supply fluid container. The fluid passage, the first end connected to the second end of the pump tube, and the handpipe A second fluid passage including a second end connected to the handpiece, and a second fluid passage connected to the handpiece. A third fluid passage including a first end and a second end connected to a waste container, and the H The first end connected to the first console connector fixed to the wedge, and the discard A fourth fluid passage including a second end connected to a material container, and connected to the third fluid passage The first end is connected to the second console connector fixed to the housing. The present invention provides a surgical cleaning cassette having a fifth fluid passage having a second end. Step and, Insert the cassette into a control console that includes or is connected to a suction source. Step and, The steps include connecting the second end of the first fluid passage to the supply fluid container, The steps include connecting the second end of the second fluid passage to the handpiece, The steps include connecting the first end of the third fluid passage to the handpiece, The steps include connecting the second end of the third fluid passage to the waste container, The steps include connecting the second end of the fourth fluid passage to the waste container, A method for providing it.

[0111] The above description has described several embodiments. However, the following will not be discussed in this specification. The embodiments described are exhaustive, or the disclosure is not limited to any particular form. This is not the intended meaning. The terms used are intended to be descriptive, not restrictive, but to convey the essence of the terminology. Considering the above teachings, various modifications and variations are possible, and this disclosure is specific. It can be carried out in ways other than those described physically.

Claims

1. Controlling suction pressure in ultrasonic surgical handpieces improves control responsiveness during suction. It is a suction system, Suction pump and Suction extending at least partially between the surgical handpiece connector and the suction pump A passage further including a joint that divides the suction passage into at least two flow paths. Passageway and The first part of the suction passage, which is positioned between the surgical waste container connector and the suction pump. The second unit, connected to the waste container, is configured to monitor and supply waste container pressure. Sensor 1 and A first vent valve connected to the first portion of the suction passage, A second vent valve connected to the second end of the suction passage, which begins at the joint, 、 It is connected to the second portion of the suction passage and relates to the tip of the ultrasonic surgical handpiece. A second sensor configured to monitor the connected suction pressure and supply a tip pressure signal, 、 Based on the waste container pressure signal, the position of the first vent valve is controlled, A control is configured to control the position of the second vent valve based on the tip pressure signal. Controller and, A suction system is provided.

2. The joint includes a joint valve that can be operated to separate the suction passages, The joint valve comprises a first joint port, a second joint port, and a third The joint port is located, and the second portion of the suction passage is located at the third joint port Connected to The suction system according to claim 1.

3. The joint valve prevents surgical waste from entering the second portion of the suction passage. It is a ball valve designed to do so. The suction system according to claim 2.

4. The third portion of the suction passage is connected to the second joint port, and Connected to the surgical waste container connector of the surgical waste container, The suction system according to claim 2.

5. The ultrasonic surgical handpiece further comprises a cassette that is fluidly connected to the handpiece, The cassette includes an opening to the third portion of the suction passage, The aforementioned opening operates in such a way that suction pressure does not reach 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 a cleaning line that connects the ultrasonic surgical handpiece to a cleaning source. Equipped, The suction system according to claim 5.

7. The aforementioned ultrasonic surgical handpiece is further provided, A suction system according to any one of claims 1 to 6.

8. The first portion of the suction passage includes a clean side flow path. 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. doing, A suction system according to any one of claims 1 to 8.

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

11. The suction passage is further provided with a pinch valve that is aligned with the third portion of the passage. The third portion of the suction passage extends from the joint to the surgical waste container connector. It extends, The pinch valve, when in operation, ensures that the suction pressure reaches the tip of the ultrasonic surgical handpiece. Designed to be unreachable, A suction system according to any one of claims 1 to 10.

12. The pinch valve is further equipped with a three-way valve connected to the aforementioned pinch valve, The three-way valve provides the pinch valve to the atmosphere and / or the first part of the suction passage. Configured to connect to minutes The suction system according to claim 11.

13. The aforementioned pinch valve is pneumatic. The suction system according to claim 11 or claim 12.

14. The pinch valve is activated when the foot pedal that operates the ultrasonic surgical handpiece is pressed. Configured to close when not engaged, The suction system according to any one of claims 11 to 13.

15. The controller further controls the position of the first ventilation valve, and the surgical waste A container configured to maintain a desired pressure, A suction system according to any one of claims 1 to 14.

16. The controller includes a first PID control loop for controlling the first ventilation valve, and The system further comprises a second PID control loop for controlling the second vent valve, A suction system according to any one of claims 1 to 15.

17. The first PID control loop is connected to the first portion of the suction passage. Based on the waste container pressure signal supplied by the sensor and the target waste container pressure, Configured to determine the waste container error signal, The suction system according to claim 16.

18. The target waste container pressure is associated with the tip of the ultrasonic surgical handpiece. Determined based on parameters stored in the Mori device. The suction system according to claim 17.

19. The second PID control loop is connected to the second portion of the suction passage. Based on the tip pressure signal supplied by the sensor and the target tip pressure, the tip error Configured to determine the signal, The suction system according to claim 16.

20. The aforementioned target tip pressure is determined by a memory device associated with the tip of the ultrasonic surgical handpiece. Determined based on parameters stored in the vice. The suction system according to claim 19.

21. The controller adjusts the first vent valve and the second vent valve, Higher pressure in the first portion of the suction passage, and in the second portion of the suction passage It is configured to maintain a relatively lower pressure. A suction system according to any one of claims 1 to 20.

22. A method to improve the control response during suction by controlling the suction pressure of an ultrasonic surgical handpiece. There is, The suction pump is driven to generate suction pressure in the ultrasonic surgical handpiece. Includes the step of generating suction pressure within the suction system, A step of depositing surgical waste into a surgical waste container via a suction passage, In the first portion of the suction passage extending between the surgical waste container connector and the suction pump A first vent valve is connected and is positioned along the first portion of the intake passage. The first step is to sense the first suction pressure with the first sensor, The first step of generating a waste container pressure signal using the first sensor, A fluid backflow device starting from a joint that is in fluid communication with the first portion of the suction passage. The second suction pressure is detected by a second sensor positioned along the second portion of the suction passage, which ends at the second suction passage. The sensing step, The steps include generating a tip pressure signal using the second sensor, A step of controlling the position of the first vent valve based on the waste container pressure signal, 、 A step of controlling the position of the second vent valve based on the aforementioned tip pressure signal, A method for providing it.

23. By using the fluid backflow device, the surgical waste is transferred to the second suction passage. It also includes a step to prevent it from getting into that part. The method according to claim 22.

24. The third portion of the suction passage extending from the joint to the second surgical waste container connector The process further includes a step of aligning the pinch valves. The method according to claim 22 or claim 23.

25. By controlling the position of the first ventilation valve, desired It also includes a step to maintain pressure, The method according to any one of claims 22 to 24.

26. The cleaning fluid is routed to the ultrasonic surgical handpiece connector via a cassette. Equipped with an additional top, The method according to any one of claims 22 to 25.

27. The memory device associated with the tip of the ultrasonic surgical handpiece stores the The system further includes a step of determining the target waste container pressure based on the meter. The method according to any one of claims 22 to 26.

28. The position of the first vent valve is determined by comparing the first suction pressure with the target waste container pressure. Controlled based on, The method according to claim 27.

29. The memory device associated with the tip of the ultrasonic surgical handpiece stores the The system further includes a step of determining the target tip pressure based on the lameter, The method according to any one of claims 22 to 26.

30. The position of the second vent valve is determined based on a comparison between the second suction pressure and the target tip pressure. and controlled by the aforementioned controller, The method according to claim 29.

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

32. Release the foot pedal to stop the vibration at the tip of the ultrasonic surgical handpiece. Steps to take, The step of moving the valve so that suction from the suction pump activates the pinch valve. and, It also has the following features: The method according to any one of claims 22 to 31.

33. The aforementioned pinch valve is pneumatic. The method according to any one of claims 24, 31, or 32.

34. Controlling suction pressure in ultrasonic surgical handpieces improves control responsiveness during suction. It is a suction system, Suction pump and A hand configured to be positioned in fluid communication with the aforementioned ultrasonic surgical handpiece Surgical handpiece connector and The surgical handpiece connector and the suction pump extend at least partially between them. A suction passage, further comprising a joint that divides the suction passage into a first part and a second part. The suction passage included, Displaced between the surgical waste container connector and the suction pump, the first of the suction passages A first vent valve connected to the part, A second connection to the end of the second portion of the suction passage, starting from the joint Ventilation valve and The position of the first vent valve is controlled, and the position of the second vent valve is controlled. The pressure difference is maintained, and the pressure in the first portion of the suction passage is the pressure in the first portion of the suction passage A controller configured to be higher than the pressure in the second part, A suction system is provided.

35. A suction system for controlling an ultrasonic surgical handpiece, Suction pump and At least partially extending between the ultrasonic surgical handpiece connector and the suction pump A suction passage, wherein the joint divides the suction passage into a first part and a second part. The suction passage included in, Displaced between the surgical waste container connector and the suction pump, the first of the suction passages A first vent valve connected to the part, A second vent valve connected to the end of the second portion of the suction passage, The second portion starts from the joint and extends along the suction passage to the second vent valve. The second vent valve extends, A first sensor connected to the first portion of the suction passage, A second sensor connected to the second portion of the suction passage, When the first flow rate is determined based on the first input signal supplied by the first sensor, Both determine the second flow rate based on the second input signal supplied by the second sensor. The system determines the flow rate and / or outputs a tip blockage signal based on the first flow rate and / or the second flow rate. A controller configured to control the suction pump based on the tip blockage signal, 、 A suction system is provided.

36. The second flow rate is related to the tip flow rate passing through the tip of the ultrasonic surgical handpiece. Kicked, The suction system according to claim 35.

37. The controller is capable of measuring the duration of the tip-blocking signal, It also includes a timer to detect blockages in the ultrasonic surgical handpiece. The suction system according to claim 35 or claim 36.

38. The controller uses a timer to continuously evaluate the tip flow rate for a first predetermined time interval. This determines the average tip flow rate. The suction system according to claim 36.

39. The controller further controls the average tip flow rate at the tip of the ultrasonic surgical handpiece. Tip-clogging threshold and ratio based on parameters stored in the memory device associated with the tip. Configured for comparison, The suction system according to claim 38.

40. The controller further determines if the average tip flow rate is greater than the tip clogging threshold. The timer and the tip blockage signal are configured to be reset. The suction system according to claim 39.

41. The controller further determines if the average tip flow rate is less than the tip clogging threshold. The aforementioned timer is configured to start, The suction system according to claim 39 or claim 40.

42. The controller is configured such that the average tip flow rate is less than the tip clogging threshold, and the If the current time exceeds the second predetermined time interval, the blockage in the ultrasonic surgical handpiece is cleared. It detects the blockage and outputs the tip blockage signal indicating that the blockage has been detected. The suction system according to claim 39 or claim 40.

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

44. The first input signal is associated with the first suction pressure sensed by the first sensor. It is being done, The suction system according to claim 35.

45. The second input signal is associated with the second suction pressure sensed by the second sensor. It is being done, The suction system according to claim 35.

46. The first sensor and the second sensor are differential pressure sensors. The suction system according to claim 35.

47. A method for controlling the suction pressure in an ultrasonic surgical handpiece, A step of driving a suction pump to generate suction pressure within the suction system, In the first portion of the suction passage located between the surgical waste container connector and the suction pump A first vent valve is connected, and the first portion of the suction passage is connected to the A step in which a first suction pressure is detected by sensor 1, Starting from a joint that divides the aforementioned suction passage into at least two lines, the second ventilation bar A second se connected to the second portion of the suction passage extends along the suction passage to the lube. The second step involves sensing the suction pressure with the sensor, The first input signal supplied by the first sensor, and the second sensor The steps include generating a second input signal that has been supplied, Based on the first input signal, the first flow rate is determined, and based on the second input signal... The steps include determining a second flow rate based on the above, The steps include outputting a tip blockage signal based on the second flow rate, The steps include controlling the suction pump based on the tip blockage signal, A method for providing it.

48. Based on the first input signal and the second input signal, the first vent valve, The system further comprises the step of controlling the position of a second vent valve, or a combination thereof, The method according to claim 47.

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

50. Using a timer, the tip flow rate is continuously evaluated over a first predetermined time interval to obtain the average tip flow rate. It further includes a step for determining the flow rate, The method according to claim 48.

51. The average tip flow rate is recorded in a memo associated with the tip of the ultrasonic surgical handpiece. The device further includes a step of comparing it with a tip-clogging threshold based on parameters stored in the redevice. Eta, The method according to claim 50.

52. Based on the comparison between the average tip flow rate and the tip clogging threshold, the timer is reset. The further step includes resetting the tip blockage signal and starting the timer. 、 The method according to claim 50.

53. The average tip flow rate is less than the tip clogging threshold, and the timer is set for a second predetermined time. If the interval is exceeded, the system detects a blockage in the ultrasonic surgical handpiece and the blockage The method further comprises the step of outputting the tip blockage signal indicating that the blockage has been detected, The method according to any one of claims 50 to 52.

54. Based on the aforementioned tip blockage signal, the first vent valve, the second vent valve, or The system further includes a step to control the position of that combination. The method according to claim 48.

55. A suction system that controls suction pressure, Ultrasonic surgical handpiece, Suction pump and The suction extends at least partially between the ultrasonic surgical handpiece and the suction pump. A suction passage further includes a joint that divides the suction passage into a first part and a second part. The suction passage, It is positioned between the surgical waste container connector and the suction pump, and the suction pump A first ventilation valve connected to part 1, A second vent valve connected to the end of the second portion of the suction passage, Part 2 starts from the joint and runs along the suction passage to the second vent valve. A second vent valve extends, A first sensor connected to the first portion of the suction passage, A second sensor connected to the second portion of the suction passage, Controller and Equipped with, The aforementioned controller, A first flow rate is determined based on the first input signal received from the first sensor. Based on the second input signal received from the second sensor, the ultrasonic surgical handpiece... Determine a second flow rate associated with the tip flow rate passing through the tip of the pipe. A tip blockage signal is output based on the first flow rate and the second flow rate. The suction pump is configured to control the aforementioned tip blockage signal, Suction system.

56. Controlling suction pressure in ultrasonic surgical handpieces improves control responsiveness during suction. It is a suction system, A console including a suction pump, Surgical waste container having a first surgical waste container port and a second surgical waste container port and, The first joint port, the second joint port, and the third joint port are specified. The first joint port is a first flow path extending from the ultrasonic surgical handpiece. A joint that connects, It is connected to the second joint port and the first surgical waste container port. A second channel connected to, A third flow path connected to the third joint port, A fourth flow path connected to the second surgical waste container port, In the fourth flow path, a pressure representing the waste container pressure is sensed, and a waste container pressure signal is generated. A first sensor arranged to supply, In the third flow path, suction associated with the tip of the ultrasonic surgical handpiece. A second sensor is positioned to sense pressure and supply a tip pressure signal, A first vent valve connected to the fourth flow path, A second vent valve connected to the third flow path, Based on the waste container pressure signal, the position of the first vent valve is controlled, A control is configured to control the 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. A method for controlling a suction system to improve control responsiveness during suction, The suction system comprises a suction pump, an ultrasonic surgical handpiece, and a surgical waste container. , clean side channel, dirty side channel, and connected to the dirty side channel A fluid backflow device, a clean-side ventilation mechanism connected to the clean-side flow path, and the A second ventilation mechanism connected to a fluid backflow device, and the suction pump and the surgical waste container A clean side channel is positioned between the ultrasonic surgical handpiece and the fluid backflow device. Includes a dirty side channel positioned between the and The aforementioned method, A step of sensing the first pressure in the dirty side passage, A step of sensing the second pressure in the clean side flow path, A step of controlling the second ventilation mechanism based on the first pressure, A step of controlling the cleanside ventilation mechanism based on the second pressure, A method for providing it.

58. Controlling suction pressure in ultrasonic surgical handpieces improves control responsiveness during suction. It is a suction system, A console with a suction pump, Ultrasonic surgical handpiece, Surgical waste container, A clean-side channel is positioned between the suction pump and the surgical waste container, Dirty side channel, A fluid backflow device communicating with the dirty side channel, A cleanside ventilation mechanism that communicates with the cleanside flow path, A second ventilation mechanism communicating with the aforementioned fluid backflow device, Equipped with, The dirty side channel is between the ultrasonic surgical handpiece and the fluid backflow device. Arranged, Suction system.

59. A suction system for controlling suction pressure in an ultrasonic surgical handpiece, A console that defines a cassette receptacle and has a cassette release button, A cassette sensor configured to determine the position of the cassette release button, The pinch valve is configured to control the signal from the cassette sensor. Controller and A suction system is provided.

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