Fluid control system for ophthalmic surgery

Abstract

Embodiments disclosed herein provide a compression system including a compression plate, a linkage assembly, and a drive assembly. The squeeze plate is configured to engage with the fluid bag. The linkage assembly includes a plurality of brackets, each bracket coupled to a plurality of linkage sets, where actuation of the linkage assembly translates the squeeze plate laterally. The drive assembly includes: a lead screw disposed through each of the plurality of brackets; an actuator configured to rotate the lead screw to actuate the drive assembly; and a nut assembly coupled to the lead screw and at least one of the plurality of brackets, where the nut assembly is configured to provide a biasing force to maintain a target pressure range on the fluid bag upon failure of the actuator.

Description

Cross-references to related applications

[0001] This application claims the benefit of U.S. Provisional Application Serial No. 63 / 594,924 (filed October 31, 2023), the contents of which are incorporated herein by reference in their entirety. Background Technology

[0002] During certain surgical procedures (such as ophthalmic surgery), a surgical console can be used to control the inflow and outflow of fluids to the patient. To deliver fluids to the patient, many fluid control systems utilize a compression system located within or operatively connected to the surgical console to engage with a fluid filling bag or other reservoir fluidly connected to a fluid delivery device.

[0003] However, fluid control systems with electrically driven motors and compression mechanisms can experience power failures or other similar events that may interrupt fluid flow during surgical procedures. For example, in the event of a power outage, motor failure, control malfunction, or other similar events, such a system may fail to drive the compression mechanism engaged with the fluid filling bag or other reservoir. As a result, pressure and / or fluid flow may change drastically because the compression force on the fluid filling bag or other reservoir may not be maintained. Such events can lead to a variety of patient-related complications, thereby reducing the safety and / or efficacy of the surgical procedure.

[0004] Furthermore, some current fluid control systems employ expensive linear slider compression mechanisms with screw and motor assemblies. Linear sliders are typically oriented perpendicular to the fluid bag or reservoir to facilitate efficient compression and control. Due to the orientation of the linear slider, the compression system requires a significant lateral (e.g., horizontal) coverage area to accommodate its screw and motor assemblies, which increases the size of the compression system and, in many cases, the size of the surgical console. Summary of the Invention

[0005] This disclosure generally relates to fluid control systems used in surgical consoles.

[0006] In some embodiments, a compression system is provided configured to be coupled to a surgical console for ophthalmic perfusion and / or infusion during surgical procedures. The compression system includes: a compression plate configured to engage a fluid bag; a linkage assembly including a plurality of supports, each support coupled to a plurality of linkage assemblies, wherein actuation of the linkage assembly causes lateral translation of the compression plate; and a drive assembly including: a lead screw disposed through each of the plurality of supports; an actuator configured to rotate the lead screw to actuate the drive assembly; and a nut assembly coupled to the lead screw and at least one of the plurality of supports, wherein the nut assembly is configured to provide a biasing force to maintain a target pressure range on the fluid bag in the event of actuator failure.

[0007] In some embodiments, another compression system is provided, configured to be coupled to a surgical console for ophthalmic perfusion and / or infusion during surgical procedures. The compression system includes: a compression plate configured to engage a fluid bag; a linkage assembly including a plurality of supports, each support coupled to a plurality of linkage groups, wherein actuation of the linkage assembly causes lateral translation of the compression plate; and a drive assembly including: a guide screw disposed through each of the plurality of supports; an actuator configured to rotate the guide screw to actuate the drive assembly; and a nut assembly coupled to the guide screw and at least one of the plurality of supports, wherein the plurality of supports are configured to provide a biasing force to maintain a target pressure range on the fluid bag in the event of actuator failure.

[0008] The following description and accompanying drawings illustrate certain illustrative features of one or more embodiments. Attached Figure Description

[0009] The accompanying drawings depict certain aspects of one or more of the disclosed embodiments and should therefore not be construed as limiting the scope of this disclosure.

[0010] Figure 1A An example of an ophthalmic surgical system that can be used to perform ophthalmic surgery on the eye, according to certain embodiments, is illustrated.

[0011] Figure 1B According to certain embodiments Figure 1A An example of a subsystem of the console of an ophthalmic surgical system.

[0012] Figure 2 According to certain embodiments Figure 1A An isometric view of the rear side of the fluid control module of an example console for an ophthalmic surgical system.

[0013] Figure 3A According to certain embodiments Figure 2 An isometric view of the rear side of an example compression system for a fluid control module.

[0014] Figures 3B to 3E According to certain embodiments Figure 3A A schematic side view of the compression system.

[0015] Figure 3F The illustration shows a representation according to certain embodiments. Figure 3A A cross-sectional view of the lead screw and nut assembly of the compression system.

[0016] Figures 4A to 4B According to certain embodiments Figure 3A A side view of the compression system, illustrating the lateral translation of the extrusion plate.

[0017] Figure 5 According to certain embodiments Figure 2 Another example of a fluid control module is a cross-sectional view of a compression system.

[0018] For ease of understanding, the same reference numerals are used where possible to refer to the same elements common in the figures. It is contemplated that elements and features of one embodiment can be advantageously combined in other embodiments without further description. Detailed Implementation

[0019] It will be readily understood that components of the embodiments described herein and illustrated in the accompanying drawings can be arranged and designed in a wide variety of different configurations. Therefore, the more detailed description of the various embodiments below, as illustrated in the drawings, is not intended to limit the scope of this disclosure, but rather to represent the embodiments only. While various aspects of the embodiments are presented in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0020] This disclosure may be implemented in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are to be considered illustrative rather than restrictive in all respects. Therefore, the scope of this disclosure is indicated by the appended claims rather than by this specific embodiment. All variations within the equivalent meaning and scope of the claims should be included within their scope.

[0021] References to features, advantages, or similar language throughout this specification do not imply that all features and advantages achievable with this disclosure should be included in or in any single embodiment of this disclosure. Rather, references to features and advantages should be understood to mean that a particular feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of this disclosure. Therefore, discussions of features and advantages, and similar language throughout this specification, may, but do not necessarily, refer to the same embodiment.

[0022] Furthermore, the features, advantages, and characteristics described in this disclosure may be combined in any suitable manner in one or more embodiments. Based on the description herein, those skilled in the art will recognize that this disclosure can be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in some embodiments that may not be present in all embodiments of this disclosure.

[0023] Throughout this specification, references to "an embodiment," "embodiment," or similar language mean that a particular feature, structure, or characteristic described in connection with the indicated embodiment is included in at least one embodiment of this disclosure. Therefore, the phrases "in an embodiment," "in an embodiment," and similar language throughout this specification may, but do not necessarily, refer to the same embodiment.

[0024] Figure 1A An example of an ophthalmic surgical system 10, according to certain embodiments, which can be used to perform ophthalmic surgery on the eye, is illustrated. In the illustrated embodiment, system 10 includes a console 100 (also referred to as a "surgical console"), an interface device 107 (e.g., a foot pedal), and a handheld device 112 (or other fluid delivery device). Console 100 includes a housing 102, a display screen 104, and a fluid control subsystem 110. Components of system 10 and components of console 100 may be mechanically, fluidly, and / or electrically connected as shown, and references are made to... Figure 1B To describe in more detail.

[0025] Figure 1B The illustration shows some embodiments. Figure 1A An example subsystem of the console 100 of the ophthalmic surgery system 10. The console 100 includes a housing 102 that houses a computer 103 (with an associated display screen 104) and subsystems 106, 110, and 116 supporting an interface device 107 and handheld devices 112 (112a-c). The interface device 107 receives input to the console 100 to control its operation, provide output generated by the console 100, and / or process input and / or output. Although in Figure 1AThe interface device 107 is a foot pedal, but other types of interface devices may include manual input devices (e.g., a keyboard), displays, etc. The interface subsystem 106 receives input from the interface device 107 and / or provides output to the interface device.

[0026] Computer 103 controls the operation of ophthalmic surgical system 10. Typically, computer 103 includes a processor and memory. Memory may include any means capable of operating for receiving, storing, or retrieving data, including but not limited to electronic, magnetic, or optical memory, whether volatile or non-volatile. Memory may include code stored thereon. Code may include instructions executable by the processor. For example, code can be created using any programming language, including but not limited to C, C++, Java, Python, Rust, or any other programming language (including assembly language, hardware description languages, and database programming languages). In some cases, the code may be a program that, when loaded into the processor, causes surgical console 100 to receive and process information from one or more subsystems 106, 110, or 116 to provide fluid control, for example, for one or more handheld devices 112 or other devices communicating with surgical console 100.

[0027] The processor may be or include a microprocessor, microcontroller, embedded microcontroller, programmable digital signal processor, or any other programmable device operable to receive information from memory or other means communicating with the processor, computer 103, and / or console 100 and perform one or more operations on the received information. For example, the processor may send instructions to components of the fluid control subsystem 110 or other means or systems communicating with computer 103 to control such means and systems. The processor may also be operable to output results based on the operations it performs. Display screen 104 displays data provided by the processor of computer 103. In some cases, the processor may also be or include an application-specific integrated circuit, a programmable gate array, programmable array logic, or any other means or combination of means operable to process electrical signals.

[0028] Handpiece 112 can be any suitable ophthalmic surgical instrument, such as an ultrasound-driven phacoemulsification handpiece, a laser handpiece, an irrigation cannula, an infusion cannula, a vitrectomy handpiece, or another suitable surgical handpiece or fluid delivery device.

[0029] The handheld device subsystem 116 supports one or more handheld devices 112. For example, the handheld device subsystem 116 can manage the ultrasonic oscillations of the phaco handheld device, provide laser energy to the laser handheld device, control the operation of the perfusion cannula and infusion cannula, and / or manage the features of the vitrectomy handheld device.

[0030] The fluid control subsystem 110 provides fluid control for one or more handheld devices 112 (112a-c). For example, the fluid control subsystem 110 can manage fluid for infusion cannulas, infusion cannulas, or other fluid delivery devices. In some embodiments, the fluid control subsystem 110 can be operatively coupled to a surgical cartridge during a surgical procedure. For example, the surgical cartridge can be inserted into, attached to, and / or integrated with the fluid control subsystem 110 via a coupling mechanism. The coupling mechanism may include one or more latching mechanisms, locking mechanisms, or other similar connection mechanisms. When the fluid control subsystem 110 is operatively coupled to the surgical cartridge, the fluid control subsystem 110 can control the infusion and / or infusion of fluid through the surgical cartridge, which can then be fluidly coupled to one or more handheld devices 112. In some embodiments, the fluid control subsystem 110 includes one or more mechanical pumps having roller pump heads configured to engage one or more corresponding pump assemblies on the surgical cartridge as described below. The engagement of the roller pump head and pump assembly creates a pressure source and / or vacuum source used during ophthalmic surgery.

[0031] In some embodiments, the fluid control subsystem 110 further includes a fluid control module (shown as fluid control module 200). Figure 2 The fluid control module has a (fluid bag) compression system (shown as compression system 202). Figure 2 ), 300 Figure 3A ) and / or 500 ( Figure 5 This is used to apply pressure to a fluid bag loaded into the fluid control module 200 during ophthalmic surgical procedures. The compression mechanism of the fluid control module 200 can control the perfusion and / or infusion of fluid guided through the surgical cartridge. However, current compression mechanisms have various limitations.

[0032] Current compression mechanisms typically require significant space within the fluid control module 200, utilize expensive linear slides, and / or cannot provide backup pressure in the event of power failures or other similar events. For example, in current systems, the drive mechanism, including the lead screw and motor, is typically oriented perpendicular to the extrusion plate that engages with the fluid bag. This orientation requires a large coverage area within the fluid control module to support the lateral movement of the motor-driven lead screw. Additional space may also be needed to support the bag pressure sensor and its wiring, which is typically located on the side of the fluid bag opposite the extrusion plate.

[0033] Accordingly, the system described in this paper overcomes many limitations associated with current fluid control systems.

[0034] Certain embodiments described herein provide improved fluid control systems for use during ophthalmic surgeries, including those involving fluid perfusion and / or infusion within a patient's eye. More specifically, certain embodiments provide fluid control systems that are more compact, cost-effective, and facilitate backup perfusion pressure, thereby reducing complications associated with power failure, motor malfunction, control failure, or other similar events affecting perfusion and / or infusion during ophthalmic surgeries.

[0035] Some embodiments of this disclosure relate to a compression system. In some embodiments, the system includes a compression plate configured to engage a fluid bag, a linkage assembly, and a drive assembly. The linkage assembly includes a plurality of supports, each coupled to a plurality of linkage assemblies. The drive assembly includes: a lead screw disposed through each of the plurality of supports; an actuator configured to rotate the lead screw to actuate the drive assembly; and a nut assembly coupled to the lead screw and at least one of the plurality of supports. In some embodiments, actuation of the linkage assembly causes a lateral translation of the compression plate. Additionally, the nut assembly may be configured to provide a biasing force to maintain a target pressure range on the fluid bag in the event of actuator failure.

[0036] Figure 2 According to certain embodiments Figure 1A A rear isometric view of a portion of the example fluid control module 200 of the console 100 of the ophthalmic surgical system 10. The fluid control module 200 can be implemented as... Figures 1A to 1B It is part of the fluid control subsystem 110.

[0037] In some embodiments, the fluid control module 200 includes a (fluid bag) compression system 202, a main printed circuit board assembly (PCBA) 204, a fluid bag identification (ID) camera 206, and a bag pressure sensor assembly 208. The main PCBA 204 may be mounted on one side of the compression system 202. The fluid bag ID camera 206 can be used to identify fluid bags (shown as fluid bag 301). Figure 3A The type of fluid bag or the bag pressure sensor assembly 208 can be used to determine the pressure within the fluid bag. In some embodiments, the fluid bag ID camera 206 and / or the bag pressure sensor assembly 208 may be positioned on the mechanical side of the compression system 202 to help facilitate a compact design of the compression system 202. The compression system 202 may be implemented as part of a console 100 for anterior and / or posterior ocular surgery, wherein the compression system provides perfusion and / or infusion pressures during ophthalmic surgery. Reference Figures 3A to 3F The compression system 202 is described in further detail.

[0038] Figure 3A According to certain embodiments Figure 2 The fluid control module 200 is shown as a rear isometric view of an example compression system 300. That is, the compression system 300 represents... Figure 2 An embodiment of the compression system 202. The compression system 300 includes a compression plate 302, a linkage mechanism assembly 304, and a drive assembly 306 within a chamber 318. In some embodiments, the compression system 300 may be configured to be disposed within the surgical console 100. For example, the compression system 300 may be implemented in the fluid control module 200 of the surgical console 100 to control the perfusion and / or infusion functions of the surgical console 100.

[0039] The compression system 300 controls perfusion and / or infusion by applying and / or maintaining pressure on a fluid bag 301 disposed within the fluid control module 200 during surgical procedures. By applying pressure to the fluid bag 301, fluid is guided through the neck 303 of the fluid bag 301 and into a fluid line connected to a surgical cassette or fluid delivery device. The neck 303 of the fluid bag 301 can be held in place by a fluid bag mount 305 disposed within the fluid control module 200.

[0040] Fluid bag 301 can contain fluids or fluid mixtures used in ophthalmic surgery. For example, fluid bag 301 can contain infusion fluids and / or perfusion fluids, which may be balanced salt solutions (BSS), alkaline saline solutions containing drugs, perfluorocarbon liquids, viscoelastic substances, or other similar fluids.

[0041] The squeeze plate 302 is configured to engage and press (e.g., “squeeze”) the fluid bag 301, thereby causing fluid to shift from the fluid bag 301 (e.g., causing fluid to flow out of the fluid bag and into the patient). For example, the squeeze plate 302 may be laterally translated toward and / or away from the fluid bag 301 via actuation of the linkage assembly 304 and the drive assembly 306. The squeeze plate 302 may include a cut 307 corresponding to the neck 303 of the fluid bag 301. In some embodiments, the cut 307 prevents the squeeze plate 302 from applying pressure to the neck 303, which could dislodge the fluid bag 301 and / or impede perfusion and / or infusion.

[0042] The linkage assembly 304 includes multiple supports: a first actuation support 308-1 and a second actuation support 308-2 (collectively referred to herein as "support 308" or "actuation support 308"). Each support 308 can be connected to multiple linkage groups, which in... Figure 3B and Figure 3D The best view is in the middle. Although the linkage assembly 304 includes two supports 308, the linkage assembly 304 may also include one or more supports.

[0043] The drive assembly 306 includes a lead screw 312, an actuator 314, and a nut assembly 316. In some embodiments, the lead screw 312 is disposed through each bracket 308 and can be rotated by the actuator 314. For example, the actuator 314 may be a motor configured to rotate the lead screw 312 in a first direction to extend the extrusion plate 302 toward the fluid bag 301, and / or in a second direction to retract the extrusion plate 302 away from the fluid bag 301. Other examples of the actuator 314 include a linear actuator, a rotary actuator, an electric motor (e.g., a servo motor or stepper motor), or another similar actuator or motor configured to provide accurate controlled rotation for precise movement. The drive assembly may also include more or fewer components for performing the same or similar functions. Reference Figures 4A to 4B The extension and retraction of the extrusion plate 302 are described in further detail.

[0044] In some embodiments, reference Figure 3F The nut assembly 316, described in further detail, is configured to provide a biasing force to maintain a target pressure range on the fluid bag 301 in the event of a failure of the actuator 314. In other words, the nut assembly 316 incorporates a tool for providing backup pressure to the fluid bag 301 in the event of a failure of the actuator 314. For example, the actuator 314 may fail if there is a power outage, motor failure, control failure, or other similar event that disables the operation of the actuator 314.

[0045] In some embodiments, the linkage assembly 304 and the drive assembly 306 are oriented parallel to the extrusion plate 302. By oriented the linkage assembly 304 and the drive assembly 306 parallel to the extrusion plate 302, the compression system 300 can be more compact and requires less volume within the fluid control module 200 and the control console 100.

[0046] refer to Figure 2 and Figure 3A To facilitate a compact design for compression systems 202 and / or 300, the fluid bag ID camera 206 and bag pressure sensor assembly 208 can be positioned on the mechanism side of compression systems 202 and / or 300 (i.e., the drive assembly 306 side of the compression plate 302) to fit within the space surrounding the linkage mechanism assembly 304 and the drive assembly 306. Additionally, the main PCBA 204 can be mounted on one side of compression systems 202 and / or 300 using a spring-loaded bracket assembly that facilitates connection of its blind-mating connector to the console 100 during installation. Therefore, the compactness of compression systems 202 and / or 300 allows for a smaller console (e.g., console 100...). Figure 1A This frees up more space in operating rooms where there is usually a lack of available space due to large equipment.

[0047] The compression system 300 can reduce associated manufacturing costs because it eliminates the need for precision linear slides. Furthermore, the compact design of the compression system 300 allows for smaller parts and less material, thereby also reducing manufacturing costs.

[0048] Figures 3B to 3E According to certain embodiments Figure 3A A schematic side view of the compression system 300.

[0049] Go to Figure 3B , Figure 3B It's a diagram. Figure 3A A schematic left-side view of multiple linkage groups of linkage assembly 304. (See diagram below.) Figure 3B As shown, the left side of the linkage assembly 304 includes a left-side two-bar linkage group 321-1 and multiple left-side four-bar linkage groups: a first left-side four-bar linkage group 323-1a and a second left-side four-bar linkage group 323-1b. For clarity, the term "left" is used herein to refer to the left side of the linkage assembly 304. Figure 3A The view shown is the leftmost side of the compression system 300, but does not restrict the orientation of the compression system 300.

[0050] Go to Figure 3C The left-side double-bar linkage assembly 321-1 includes a first bar 326-1a and a second bar 326-1b. The first bar 326-1a is connected to a first inner surface 320-1 at a surface joint 340-1a, and the second bar 326-1b is connected to an extrusion plate 302 at an extrusion plate joint 341-1a. The first inner surface 320-1 may be a wall opposite to a second inner surface 320-2, and the fluid bag 301 may be configured to abut against this second inner surface. Furthermore, the first bar 326-1a and the second bar 326-1b share a common joint 342-1a.

[0051] At the common joint 342-1a, the left-side double-bar linkage assembly 321-1 is connected to the second actuation bracket 308-2, which is connected to the actuator 314. The common joint 342-1a can be provided in the slot 345-1 in the first vertical bracket 324-1 (in... Figure 3A Within the slot 345-1 (best visible in the center), the left double-bar linkage 321-1 slides vertically (e.g., up and down) along the length of the slot 345-1 when the linkage assembly 304 is actuated. The slot 345-1 can provide a stop for the left double-bar linkage 321-1 and help keep the linkage assembly aligned.

[0052] The first left-side four-bar linkage 323-1a includes a first link 328-1a and a second link 328-2a, and the second left-side four-bar linkage 323-1b includes a first link 328-1b and a second link 328-2b. Both left-side four-bar linkages 323-1a and 323-1b include a first vertical support 324-1, which acts as a common link and connects the linkages 323-1a and 323-1b. The first left-side four-bar linkage 323-1a is connected to a first inner surface 320-1, while the second left-side four-bar linkage 323-1b is connected to an extrusion plate 302.

[0053] Two left-side four-bar linkage assemblies 323-1a and 323-1b share two common joints 342-2a and 342-3a. At a common joint 342-2a, the two left-side four-bar linkage assemblies 323-1a and 323-1b are connected to a first actuation bracket 308-1 connected to a nut assembly 316. The first link 328-1a and the second link 328-2a of the first left-side four-bar linkage assembly 323-1a are further connected to a first inner surface 320-1 at surface joints 340-1a and 340-2a, respectively. The first link 328-1b and the second link 328-2b of the second left-side four-bar linkage assembly 323-1b are further connected to an extrusion plate 302 at extrusion plate joints 341-1a and 341-2a, respectively.

[0054] Go to Figure 3D , Figure 3D It's a diagram. Figure 3A A schematic right-side view of multiple linkage groups of linkage assembly 304. (See attached image.) Figure 3D As shown, the right side of the linkage assembly 304 includes a right-side two-bar linkage group 321-2 and multiple right-side four-bar linkage groups: a first right-side four-bar linkage group 323-2a and a second right-side four-bar linkage group 323-2b. For clarity, the term "right" is used herein to refer to the linkage from... Figure 3A The view shown is the rightmost side of the compression system 300, but does not restrict the orientation of the compression system 300.

[0055] Turning Figure 3E The right-side double-bar linkage assembly 321-2 includes a first bar 327-1a and a second bar 327-1b. The first bar 327-1a is connected to the first inner surface 320-1 at a surface joint 340-1b, and the second bar 327-1b is connected to the extrusion plate 302 at an extrusion plate joint 341-1b. Furthermore, the first bar 327-1a and the second bar 327-1b share a common joint 342-1b.

[0056] At the common joint 342-1b, the right-side double-bar linkage assembly 321-2 is connected to the second actuation bracket 308-2, which is connected to the actuator 314. The common joint 342-1b can be disposed in the slot 345-2 in the second vertical bracket 324-2 (in...). Figure 3A Within the slot 345-2 (best visible in the center), the right-side double-bar linkage 321-2 slides vertically (e.g., up and down) along the length of the slot 345-2 when the linkage assembly 304 is actuated. The slot 345-2 helps to maintain the vertical alignment of the linkage assembly. Furthermore, the slot 345-2 can provide a stop for the common joint 342-1b of the right-side double-bar linkage 321-2, which helps to prevent the compression plate 302 from overextending and / or retracting.

[0057] The first right-side four-bar linkage assembly 323-2a includes a first link 329-1a and a second link 329-2a, and the second right-side four-bar linkage assembly 323-2b includes a first link 329-1b and a second link 329-2b. Both right-side four-bar linkage assemblies 323-2a and 323-2b include a first vertical support 324-1, which acts as a common link and connects the linkage assemblies 323-2a and 323-2b. The first right-side four-bar linkage assembly 323-2a is connected to a first inner surface 320-1, while the second right-side four-bar linkage assembly 323-2b is connected to an extrusion plate 302.

[0058] Two right-side four-bar linkage assemblies 323-2a and 323-2b share two common joints 342-2b and 342-3b. At one common joint 342-2b, the two right-side four-bar linkage assemblies 323-2a and 323-2b are connected to a first actuation bracket 308-1 connected to a nut assembly 316. The first link 329-1a and the second link 329-2a of the first right-side four-bar linkage assembly 323-2a are further connected to a first inner surface 320-1 at surface joints 340-1b and 340-2b, respectively. The first link 329-1b and the second link 329-2b of the second right-side four-bar linkage assembly 323-2b are further connected to an extrusion plate 302 at extrusion plate joints 341-1b and 341-2b, respectively.

[0059] In some embodiments, the joints 340, 341, and 342 of linkage assemblies 321 and 323 may be some form of connection, such as pins, bolts, laser welding or electron beam welding, or other similar connection mechanisms. Additionally, the rods connected to the first inner surface 320-1 may be stationary. Linkage assemblies 321 and / or 323 may also include fewer or more rods associated with each linkage assembly 321 and / or 323.

[0060] Figure 3F The illustration shows a representation according to certain embodiments. Figure 3A A cross-sectional view of the lead screw 312 and nut assembly 316 of the compression system 300. The nut assembly 316 includes a nut 330 with a cap 331, a base unit 332, a spring 334 disposed between the nut 330 and the base unit 332, and at least one anti-rotation feature 336 disposed between the nut 330 and the base unit 332. Figure 3F As shown, spring 334 may include a compression spring connected in series with actuator 314, nut 330, and base unit 332. Although a compression spring is shown, other types of springs and other biasing devices are conceivable.

[0061] In some embodiments, nut 330 is configured to engage with lead screw 312, and base unit 332 connects first actuation bracket 308-1 to nut 330. Nut 330 also includes cap 331, which is configured to engage with base unit 332. Because nut 330 and base unit 332 together connect first actuation bracket 308-1 to lead screw 312, rotation of lead screw thereby actuates movement (e.g., vertical movement) of first actuation bracket 308-1. Further, movement of first actuation bracket 308-1 thereby actuates linkage assemblies 321 and 323 and compression plate 302.

[0062] The anti-rotation feature 336 maintains rotational alignment between the nut 330 and the base unit 332, while allowing the base unit 332 and the first actuation bracket 308-1 to travel longitudinally (e.g., extend vertically) when the biasing force provided by the spring 334 is released. The anti-rotation feature 336 can be as follows: Figure 3F The bearing shown may include grooves and fingers or other mechanisms to maintain rotational alignment. Although the nut assembly 316 is shown as including one anti-rotation feature 336, the nut assembly 316 may include more than one anti-rotation feature 336. In some embodiments, the nut assembly 316 includes three anti-rotation features. Furthermore, the nut assembly 316 is not limited to... Figure 3F The layout shown.

[0063] In some embodiments, actuator 314 is configured to generate a biasing force provided by spring 334. That is, actuator 314 can generate the biasing force by compressing spring 334 during operation of compression system 300. Compression of spring 334 is generated by rotating the screw in a first rotational direction, which causes nut 330 and cap 331 to move downward toward actuator 314 in a first linear direction, thereby compressing spring 334 to the point where cap 331 engages with base unit 332 (i.e., bottoming out).

[0064] When (or if) actuator 314 stops working (e.g., due to a malfunction of actuator 314), the bias force is released and provided via the decompression of spring 334. That is, when the bias force is released, the first actuator bracket 308-1 and the base unit 332 change from the compressed position to the decompressed position (e.g., Figure 3F As shown), nut 330 remains in place. The release of the bias force (i.e., the decompression of spring 334) causes spring 334 to engage cap 331 and base unit 332, thereby causing the first actuation bracket 308-1 to continue moving downwards along the first linear direction. As the first actuation bracket 308-1 continues to move along the first linear direction toward the second actuation bracket 308-2, linkage assemblies 321 and 323 continue to extend laterally and cause the extrusion plate 302 to extend toward the fluid bag 301. Extending the extrusion plate 302 toward the fluid bag 301 thereby maintains the target pressure range on the fluid bag 301.

[0065] In some embodiments, a target pressure range on the fluid bag 301 can be maintained during infusion, such that the target pressure range is a safe range for a specific fluid volume in the fluid bag 301. The target pressure range on the fluid bag 301 can be used as a backup pressure, which decays slowly as fluid is dispensed from the fluid bag 301 until the spring 334 is in its final decompression position. In some embodiments, the bias force can be released manually (e.g., via surgeon input) or automatically (e.g., upon detection of a failure in actuator 314).

[0066] By maintaining a target pressure range on the fluid bag 301, fluid infusion can be sustained for a given period of time during power outages or other actuator failures without sudden changes in pressure or fluid flow. This allows for the maintenance or extension of a stable environment within the patient's eye, which helps preserve the eye's shape and prevent complications associated with intraocular pressure changes. Additionally, the surgeon can continue performing ophthalmic surgery while attempting to safely pause the procedure and / or resolve any mechanical problems affecting the compression system 300.

[0067] Figures 4A to 4B According to certain embodiments Figure 3A A schematic side view of the compression system 300, illustrating the lateral translation of the extrusion plate.

[0068] Go to Figure 4A A schematic right-side view of the compression system 300 in the retracted position is shown. Figure 4AIn this configuration, actuator 314 has rotated lead screw 312 in a first direction (e.g., clockwise or counterclockwise) to move brackets 308 away from each other and retract the extrusion plate 302 away from the second inner surface 320-2 and the fluid bag 301, as indicated by arrow 350. In other words, to place system 300 in the retracted position, brackets 308 can be moved away from each other, causing the levers of linkage assemblies 321 and 323 to retract and / or move toward each other. Furthermore, this movement causes the extrusion plate 302 to retract from the second inner surface 320-2 and the fluid bag 301.

[0069] Go to Figure 4B A schematic right-side view of the compression system 300 in its extended position is shown. Figure 4B In this configuration, actuator 314 has rotated lead screw 312 in a second direction (e.g., counterclockwise or clockwise) to move brackets 308 toward each other, thereby causing extrusion plate 302 to extend toward second inner surface 320-2 and fluid bag 301, as indicated by arrow 352. In other words, to place system 300 in the extended position, brackets 308 can be moved toward each other, thereby causing the links of linkage assemblies 321 and 323 to extend and / or move away from each other, which in turn causes extrusion plate 302 to extend toward second inner surface 320-2 and fluid bag 301.

[0070] The compression system 300 may further include a raw position sensor, a bag pressure sensor assembly, a door closing sensor, and a bag ID camera assembly to monitor the movement and positioning of the compression plate 302. The raw position sensor can determine the position of the linkage assemblies 321 and 323 by tracking the number of encoder pulses starting when the compression plate 302 is in its retracted position (or raw position), allowing the raw position sensor to determine when the compression plate 302 is in its retracted position, extended position, or any position in between. The bag pressure sensor assembly can be pressed against the fluid bag 301 to determine the fluid pressure within the fluid bag 301. The door closing sensor is positioned to detect when the door above the fluid control module 200 is closed. The bag ID camera can determine the serial number of the fluid bag 301 and / or the type of fluid bag (e.g., what fluid is inside the fluid bag 301).

[0071] Figure 5 According to certain embodiments Figure 2 Another example of the fluid control module 200 is a cross-sectional view of the compression system 500. That is, the compression system 500 represents... Figure 2 An embodiment of the compression system 202. The compression system 500 includes a compression plate 502, a linkage assembly 504 having a first vertical support 524-1 and a second vertical support 524-2, and as shown in the reference. Figures 3A to 3EThe compression system 300 describes a drive assembly 506 having a lead screw 512 and an actuator 514.

[0072] However, unlike the nut assembly 316 in the compression system 300 which provides a biasing force, the compression system 500 includes a first spring bracket 508-1 and a second spring bracket 508-2 (collectively referred to herein as "spring bracket 508") that provide a biasing force. As an example, the spring bracket 508 is made of stainless steel or other similar materials configured to provide a biasing force.

[0073] As described above, actuator 514 rotates lead screw 512, which causes nut assembly 516 to travel longitudinally (e.g., vertically up and down). This vertical movement of the nut assembly causes the first spring support 508-1 and the second spring support 508-2 to move toward or away from each other. When moving downwards, after reaching a threshold force against the fluid bag (e.g., generating a certain threshold pressure on the fluid bag), the spring supports 508 can buckle or bend inwards toward each other. This inward buckling or bending can be generated by nut assembly 516 providing a downward force on the first spring support 508-1 and actuator 514 providing an upward force on the second spring support 508-2. This buckling of the spring supports 508 provides a biasing force.

[0074] Thus, the spring support 508 is configured to provide a biasing force, for example, in the event of a failure of the actuator 514. The release of the biasing force actuates the linkage assembly 504 and causes the pressure plate 502 to maintain a target pressure range on the fluid bag (e.g., fluid bag 301). When the biasing force is released, the spring support 508 moves from a buckled position (…). Figure 5 (As shown) it transitions to the extended position, while actuator 514 and nut assembly 516 remain in place. In other words, the release of the bias force causes the ends of spring support 508 to move toward each other, which causes (e.g., actuates) multiple linkage assemblies to extend laterally and cause squeeze plate 502 to extend toward the fluid bag. Extending squeeze plate 502 toward the fluid bag thereby maintains the target pressure range on the fluid bag.

[0075] Because the spring support 508 is configured to provide a biasing force, the nut assembly 516 of the compression system 500 may or may not provide an additional biasing force. For example, the nut assembly 516 may include, as in reference nut assembly 316 ( Figure 3F The nut, base unit, spring, and anti-rotation features described herein may include a nut and an optional base unit.

[0076] Furthermore, the compression system 500 is not limited to Figure 5 The arrangement shown can have fewer or more components in different arrangements to perform the same or similar functions.

[0077] The foregoing description is provided to enable any person skilled in the art to practice the various embodiments described herein. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments. Therefore, the claims are not intended to limit them to the embodiments shown herein, but are to be given the full scope consistent with the language of the claims.

Claims

1. A compression system for a surgical console, the compression system comprising: An extrusion plate, the extrusion plate being configured to engage with a fluid bag; The linkage assembly includes multiple supports, each support being connected to multiple linkage groups. The actuation of the linkage assembly causes the extrusion plate to translate laterally; and The driver component includes: A guide screw, wherein the guide screw is disposed through each of the plurality of supports; An actuator configured to rotate the lead screw to actuate the drive assembly; and A nut assembly, which is connected to the lead screw and at least one of the plurality of supports. The nut assembly is configured to provide a biasing force to maintain a target pressure range on the fluid bag in the event of an actuator failure.

2. The compression system as described in claim 1, wherein, The nut assembly includes: A nut configured to engage with the lead screw; A base unit that connects one of the plurality of brackets to the nut; A spring, the spring being disposed between the nut and the base unit; and One or more anti-rotation features are disposed between the nut and the base unit.

3. The compression system as described in claim 2, wherein: The spring provides the biasing force when it is released; and The one or more anti-rotation features prevent the nut from rotating when the bias force is released.

4. The compression system as described in claim 2, wherein: The spring provides the biasing force when it is released; The release of the bias force actuates the linkage assembly; and Actuation of the linkage assembly causes the extrusion plate to maintain the target pressure range on the fluid bag.

5. The compression system as claimed in claim 1, wherein, The actuator is configured to: The guide screw is rotated in a first direction to move the plurality of supports toward each other, thereby causing the extrusion plate to extend toward the fluid bag; as well as The guide screw is rotated in the second direction to move the plurality of supports away from each other, thereby causing the extrusion plate to retract away from the fluid bag.

6. The compression system as claimed in claim 1, wherein, The linkage assembly includes: A first actuating bracket is connected to a plurality of four-bar linkages, the plurality of four-bar linkages being connected to the inner surface of the compression system, a plurality of common links, and the extrusion plate; and The second actuation bracket has multiple double-bar linkage groups connected to the inner surface of the compression system and the extrusion plate.

7. The compression system of claim 6, wherein, The plurality of four-bar linkage groups include: A first plurality of four-bar linkages are connected to a first vertical support, a first actuating support, the extrusion plate, and the inner surface of the compression system; and The second plurality of four-bar linkages are connected to the second vertical support, the first actuation support, the extrusion plate, and the inner surface of the compression system.

8. The compression system of claim 7, wherein: The first set of multiple four-bar linkages includes: The first four-bar linkage assembly has the following features: The first link of the first four-bar linkage assembly is connected to the first vertical support and the inner surface of the compression system. The second link of the first four-bar linkage is connected to the first vertical support, the first actuating support, and the inner surface of the compression system; and The second four-bar linkage assembly has the following features: The first link of the second four-bar linkage assembly is connected to the first vertical support and the compression plate. The second link of the second four-bar linkage is connected to the first vertical support, the first actuating support, and the compression plate; and The second set of multiple four-bar linkages includes: The first four-bar linkage assembly has the following features: The first link of the first four-bar linkage assembly is connected to the second vertical support and the inner surface of the compression system. The second link of the first four-bar linkage assembly is connected to the second vertical support, the first actuating support, and the inner surface of the compression system; and The second four-bar linkage assembly has the following features: The first link of the second four-bar linkage assembly is connected to the second vertical support and the compression plate. The second link of the second four-bar linkage is connected to the second vertical support, the first actuation support, and the extrusion plate.

9. The compression system as claimed in claim 6, wherein, The plurality of double-bar linkage groups include: A first double-bar linkage assembly, connected to the second actuation bracket, the extrusion plate, and the inner surface of the compression system; and The second double-bar linkage assembly is connected to the second actuation bracket, the extrusion plate, and the inner surface of the compression system.

10. The compression system of claim 9, wherein: The first double-bar linkage assembly includes: The first link of the first dual-bar linkage assembly is connected to the second actuation bracket and the inner surface of the compression system. The second link of the first double-bar linkage assembly is connected to the second actuating bracket and the extrusion plate; and The second double-bar linkage assembly includes: The first link of the second double-bar linkage assembly is connected to the second actuation bracket and the inner surface of the compression system. The second link of the second double-link mechanism is connected to the second actuation bracket and the extrusion plate.

11. A compression system for a surgical console, the compression system comprising: An extrusion plate, the extrusion plate being configured to engage with a fluid bag; The linkage assembly includes multiple supports, each support being connected to multiple linkage groups. The actuation of the linkage assembly causes the extrusion plate to translate laterally; and The driver component includes: A guide screw, wherein the guide screw is disposed through each of the plurality of supports; An actuator configured to rotate the lead screw to actuate the drive assembly; and A nut assembly, which is connected to the lead screw and at least one of the plurality of supports. The plurality of supports are configured to provide a biasing force to maintain a target pressure range on the fluid bag in the event of a failure of the actuator.

12. The compression system of claim 11, wherein, At least one of the plurality of supports is a spring support that provides the biasing force when released.

13. The compression system of claim 12, wherein: The release of the bias force actuates the plurality of linkage mechanisms; and Actuation of the multiple linkage mechanisms causes the extrusion plate to maintain the target pressure range on the fluid bag.

14. The compression system of claim 12, wherein, The actuator is configured to: The guide screw is rotated in a first direction to move the plurality of supports toward each other, thereby causing the extrusion plate to extend toward the fluid bag; as well as The guide screw is rotated in the second direction to move the plurality of supports away from each other, thereby causing the extrusion plate to retract away from the fluid bag.

15. The compression system of claim 11, wherein, The linkage assembly and the drive assembly are oriented parallel to the extrusion plate.

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