Adaptive robotic systems for gene editing and cell manipulation

Abstract

An adaptive robotic system for gene editing and cell manipulation is provided. The system (100) of the present invention comprises a multi-axis robotic assembly (102) with piezoelectrically actuated flexure-based joints arranged in a parallel kinematic architecture to enable submicron probe positioning relative to target cells. A mechanical end-effector mount (104) features force-limiting couplings to prevent cell damage and interchangeably mounts cell manipulation tools such as microinjection needles, nanopipettes, and electroporation electrode pairs. A microfluidic dispensing assembly (106) with pressure-controlled reagent channels and piezoelectrically actuated microvalves delivers volumetric delivery of genetic material with nanoliter precision. An optical imaging assembly (108) with variable focus optics, fluorescence excitation filters, and a Raman spectroscopic detector enables real-time visualization and confirmation of intracellular delivery events.

Description

[Technical Field]

[0001] The present invention relates to an adaptive robotic system for gene editing and cell manipulation, and in particular to an adaptive robotic device configured for automated gene editing, microinjection, electroporation, and nanoparticle-mediated delivery of genetic material into living cells. The system integrates precision mechanical actuation, microfluidic reagent dispensing, optical imaging, and environmental control to perform real-time cellular interventions with submicron precision and high reproducibility. [Background technology]

[0002] Conventional manual microinjection and electroporation techniques for cellular genetic modification suffer from inconsistent precision, operator fatigue, and variable cellular responses. Single-cell manipulation at the micron level requires not only precise drive mechanisms but also synchronization of reagent delivery, imaging feedback, and environmental control. Currently available robotic micromanipulators and automated microinjection systems lack mechanical alignment between fluid delivery paths and imaging systems, resulting in synchronization delays and off-axis drift during manipulation. Furthermore, typical systems do not offer adaptive calibration to compensate for thermal drift, vibration, and tool deformation over time, resulting in reduced accuracy during long-term cell manipulation.

[0003] The invention described herein overcomes these drawbacks by integrating mechanically synchronized robotic architecture with real-time feedback control, force sensing, microfluidic precision dispensing, and imaging correlation within a bioreaction environmental chamber. The system enables consistent delivery of genetic material, such as ribonucleoproteins, messenger ribonucleic acid, or plasmid deoxyribonucleic acid, into cells while maintaining cell viability and minimizing off-target activity.

[0004] The fields of gene editing and cell manipulation have developed rapidly over the past two decades, driven by advances in molecular biology, microfabrication, and robotic automation. However, despite the incredible potential of technologies such as clustered regularly interspaced short palindromic repeats and associated proteins 9, transcription activator-like effector nucleases, and zinc-finger nucleases, their application at the single-cell level is fundamentally limited by the lack of precision and reproducibility of physical delivery systems. The ability to introduce genetic material into specific cells or subcellular regions requires micrometer-scale mechanical precision, precise volumetric control of reagents, and real-time monitoring of biological responses. Traditional manual microinjection systems and electroporation devices rely heavily on operator technique and visual feedback, resulting in low throughput and variable success rates. Even when automated systems are employed, they are prone to issues such as mechanical drift, delayed synchronization between imaging and actuation, and environmental instability, which reduces cell viability and editing efficiency.

[0005] Existing microinjection systems typically use motorized XYZ stages with single-axis micromanipulators or glass micropipettes for gene transfer. However, these devices suffer from limited spatial precision due to backlash in lead-screw drives and hysteresis in piezoelectric actuators when subjected to repeated mechanical stress. Furthermore, traditional micromanipulators are disconnected from environmental control systems, resulting in fluctuations in temperature, humidity, and pH during prolonged operation, which can affect cell physiology. Manual calibration is time-consuming and requires users to visually align the needle tip with the microscope's optical focal plane. Small errors in probe alignment often result in incomplete perforation of the cell membrane or, conversely, over-perforation, resulting in cytoplasmic leakage and cell death. These limitations hinder the reproducibility of gene transfer events, significantly limiting their application in high-throughput genome engineering and precision stem cell therapy.

[0006] Commercially available robotic microinjection systems (such as those used in in vitro fertilization and embryo research) generally lack modularity and adaptability for gene editing tasks. Their mechanical designs are optimized for repetitive manipulation of large cells such as oocytes and are not suitable for small or adherent cells such as fibroblasts and iPS cells. These systems employ relatively coarse servomotor-based drive mechanisms with millimeter-level accuracy, preventing them from achieving the submicron precision required for molecular biology applications. Furthermore, they rarely feature integrated reagent dispensing systems capable of delivering precise nanoliter-level biochemical solutions. Users must manually load and eject reagents, a process that introduces human variation and contamination risks. These limitations highlight the need for a platform that integrates microinjection precision, optical feedback, and sterile environment control.

[0007] From a systems integration perspective, current robotic microinjection platforms are fragmented in their hardware and software designs. The imaging, actuation, and dispensing subsystems are often sourced from different manufacturers and integrated through loosely coupled control software. This modular fragmentation introduces errors due to communication delays, differences in coordinate reference systems, and calibration drift. The lack of a unified control architecture hinders real-time adaptive correction based on live feedback. For example, the robotic probe may continue to advance despite optical feedback indicating membrane deformation, potentially causing cell rupture due to excessive force. Without a closed-loop feedback system that integrates imaging, force sensing, and actuation into a single control loop, true adaptive manipulation of living cells remains elusive.

[0008] Although existing solutions offer partial automation and higher throughput compared to manual techniques, they remain limited by lack of mechanical precision, poor synchronization, inadequate environmental control, and limited feedback loop integration. These either prioritize precision at the expense of speed or throughput at the expense of reproducibility and cell health. There is a pressing technological need for adaptive robotic systems that integrate mechanical precision, fluid control, optical monitoring, and environmental stability. Such systems must employ closed-loop mechanical and optical feedback, deterministic mechanical synchronization, and stable bioreaction environmental conditions to ensure reliable and reproducible genetic manipulation at the single-cell level. The lack of such an integrated platform remains a major barrier to achieving scalable, efficient, and high-fidelity cellular gene editing in modern biotechnology and regenerative medicine applications. Summary of the Invention [Problem to be solved by the invention]

[0009] This invention discloses an adaptive robotic system for gene editing and cell manipulation aimed at automating, optimizing, and ensuring the precision of molecular and cellular engineering tasks. The system integrates a multi-axis robotic actuator, a real-time imaging sensor, and a microfluidic control unit to achieve precise handling of cell samples and biomolecular reagents. The core adaptive intelligence module dynamically adjusts robotic motion, reagent dispensing, and optical targeting using machine learning algorithms based on live feedback from image and spectroscopic data. The system enables precise microinjection, electroporation, or nanoparticle-mediated delivery of genetic material into cells, supporting diverse gene editing techniques, including clustered regularly interspaced short palindromic repeats and their associated proteins, transcription activator-like effector nucleases, and base editing. Furthermore, it incorporates closed-loop feedback control to maintain environmental parameters such as temperature, pH, and osmotic balance during manipulation. With its self-learning capabilities, the robotic platform minimizes off-target effects, increases editing efficiency, and enables reproducible single-cell or population-level manipulation. This invention offers a transformative approach to automated, adaptable, and precise gene and cell manipulation with applications in genetic engineering, regenerative medicine, drug discovery, and personalized cell therapy.

[0010] This invention provides an integrated mechanical and electronic framework for a multi-axis adaptive robotic device capable of performing single-cell and population-level gene editing under sterile and controlled conditions. The integrated system enables real-time mechanical feedback and dynamic readjustment to compensate for environmental disturbances, ensuring reproducible gene transfer and cell survival.

[0011] The primary goal of this invention is to provide an adaptive robotic device for gene editing and cell manipulation that overcomes the limitations of existing microinjection, electroporation, and optical delivery systems and achieves precise, reproducible, and contamination-free delivery of genetic material at the single-cell level. This invention aims to establish an integrated mechanical, optical, and environmental framework in which all components of the manipulation process (robot movement, reagent dispensing, imaging, and environmental stabilization) operate continuously and synchronously under real-time feedback control. By mechanically and electronically integrating these subsystems, the device ensures submicron positioning and reagent delivery accuracy, significantly improving the precision and efficiency of the intracellular gene modification process.

[0012] Another objective of this invention is to develop a mechanically synchronized robotic structure capable of adjusting the timing of probe actuation and reagent injection through a deterministic coupling mechanism. Unlike conventional systems that rely solely on software-based synchronization, the proposed device employs a cam-driven or rotary mechanical link that transmits motion directly between the robotic arm and the microfluidic dispensing unit. This ensures precise temporal alignment between mechanical puncture of the cell membrane and volumetric delivery of genetic material, enabling precise delivery of reagents into the cytoplasm or nucleus while minimizing diffusional losses. This mechanical determinism significantly reduces latency, increasing consistency and ensuring each manipulation cycle follows a reproducible temporal sequence, essential for delicate biological manipulations.

[0013] A further objective of this invention is to provide a closed-loop control architecture that continuously monitors and corrects deviations in actuator positioning, probe alignment, and environmental fluctuations during cell manipulation. The system integrates force sensors, displacement encoders, and optical feedback from a high-resolution imaging module to detect micron-level deviations in real time. Using adaptive control techniques, the robotic assembly dynamically readjusts its position to maintain precise alignment with the target cell. This capability allows the system to automatically adjust to environmental disturbances such as vibration, thermal expansion, and actuator drift, ensuring consistent, damage-free operation even during long-term or high-throughput operations.

[0014] A further objective of the present invention is to provide an integrated microfluidic dispensing assembly capable of delivering biochemical reagents, such as clustered regularly interspaced short palindromic repeats and associated protein complexes, plasmid deoxyribonucleic acid, or ribonucleoprotein mixtures, with nanoliter-level volumetric precision. The system aims to overcome common challenges of reagent adsorption, degradation, and cross-contamination by coating the internal channels with a chemically inert, biocompatible polymer. The microvalves and pressure-controlled nozzles are designed to enable both single-cell and population-level dosing, dynamically adjusting flow rates based on real-time feedback. This design ensures high delivery efficiency, minimal reagent waste, and maintenance of biomolecule integrity throughout the entire operation.

[0015] Another objective of the present invention is to provide a comprehensive optical imaging assembly that functions as both a visual feedback mechanism and a diagnostic verification system. The optical subsystem is intended to include an adjustable focusing mechanism, fluorescence and Raman imaging capabilities, and emission detection optics for real-time monitoring of intracellular events. This integration allows for simultaneous visualization of cell morphology, membrane integrity, and fluorescent marker expression during and after gene transfection. Correlation between optical imaging coordinates and robotic drive coordinates allows the system to confirm successful intracellular drug delivery and automatically halt or correct the operation if an abnormality is detected.

[0016] A further objective of this invention is to create an environmentally controlled operating chamber that can precisely control temperature, humidity, and gas composition during gene editing procedures. Unlike open-stage manipulators, which expose cells to fluctuating environmental conditions, this invention provides an enclosed bioreaction workspace that mimics the physiological conditions necessary to maintain cell viability. The system incorporates thermoelectric elements for temperature stabilization, a microblower fan for uniform airflow, and a CO2 control valve for regulating the pH level of the culture medium. The goal is to maintain temperature within ±0.2°C, humidity between 80% and 95%, and CO2 concentration between 4% and 7%, thereby ensuring optimal conditions for mammalian cell and stem cell manipulation over long periods of time.

[0017] A further objective of this invention is to achieve self-calibrating probe positioning through an integrated calibration and positioning unit employing a displacement sensor, load cell, and optical fiducial markers. The device performs an iterative positioning procedure before each operation, positioning the probe tip to within 1 micrometer of the optical focal plane. This automatic calibration minimizes user intervention, shortens setup time, and eliminates human error, improving the reproducibility of the entire gene editing process. Furthermore, the incorporation of a force-limiting coupling into the end-effector assembly ensures that the applied force remains below the threshold that would cause membrane rupture or irreversible cell damage, even in the event of unexpected resistance from the cell surface.

[0018] Another objective of the present invention is to provide high-throughput manipulation capabilities that allow multiple cell samples to be manipulated serially or in parallel and processed with consistent precision. The system integrates an automated sample-moving stage that moves multiwell culture plates in pre-programmed patterns under a robotic probe and optical axis. This enables repeated and consistent microinjection and electroporation procedures across an entire cell array, significantly increasing throughput while maintaining individual cell control. This high-throughput design makes the system suitable for genome screening, drug testing, and synthetic biology experiments that require repetitive manipulation under uniform conditions.

[0019] A further objective of the present invention is to ensure biocompatibility, sterility, and contamination prevention throughout the entire operating cycle. To achieve this, all fluid pathways, probe connections, and mechanical interfaces that come into contact with biological materials are constructed from sterilizable materials such as quartz, borosilicate glass, or medical-grade polymers. The environmental chamber incorporates a mechanically interlocked access door with a pressure-balanced valve that maintains sterility during access and maintenance. This feature allows for continuous operation in cleanroom or laboratory environments without introducing airborne contaminants or causing biological cross-interference between experiments.

[0020] A further objective of the present invention is to integrate intelligent monitoring and adaptive response techniques that analyze real-time feedback from the imaging and sensing subsystems and modify operating parameters in real time. The robotic control unit continuously processes sensor data to determine if probe trajectory, reagent pressure, or environmental conditions deviate from nominal limits. It then adjusts actuator displacement, flow rate, or chamber conditions appropriately. This adaptive behavior ensures that each manipulation event occurs within optimal biological and mechanical parameters, improving overall success and protecting the viability of manipulated cells.

[0021] A further object of the present invention is to provide a mechanically stable, vibration-isolated platform that isolates from external mechanical interference. By employing pneumatic damping isolators or elastomeric suspension mounts, the present invention ensures that vibrations from external sources, such as building movement or nearby equipment, are not transmitted to delicate robotic components. This stability is crucial in operations involving micron-level positioning and precise volumetric delivery, where even sub-micron vibrations can cause target deviations and unintended tissue damage. [Means for solving the problem]

[0022] To achieve the above objectives, the present invention provides an adaptive robotic system for gene editing and cell manipulation, comprising: a multi-axis robotic assembly including a plurality of piezoelectrically driven precision displacement elements arranged via a set of flexure-based linkages and parallel kinematic joints, configured to position a cell manipulation probe relative to a target cell substrate with submicron precision; a mechanical end-effector mount coupled to the multi-axis robotic assembly and configured to interchangeably secure at least one cell manipulation tool selected from a microinjection needle, a nanopipette, an electroporation electrode pair, or a microfluidic dispensing nozzle, the end-effector mount including a quick-release coupling assembly with mechanical positioning dowels and magnetic retention means, enabling automated tool exchange in a sterile environment without manual contact; and a microfluidic dispensing assembly mechanically connected to the multi-axis robotic assembly, the dispensing assembly having a pressure-regulated reagent channel. a reagent manifold configured to dispense genetic material in nanoliter-level volumes toward target cells, piezoelectrically actuated microvalves, and temperature-controlled supply lines configured to dispense genetic material in nanoliter-level volumes toward target cells; an optical imaging assembly optically aligned with the multi-axis robotic assembly, the optical imaging assembly comprising a variable-focus objective lens arrangement, a ball-screw-driven focusing stage with an anti-backlash nut assembly, and a highly sensitive optical sensor that provides real-time visual and spectroscopic feedback of the cell manipulation area; a calibration and alignment unit mechanically coupled to the multi-axis robotic assembly, the calibration and alignment unit comprising a displacement encoder, a load cell, and a micrometer adjuster, configured to repeatably position a probe tip to within 1 micron of the optical focal plane through closed-loop mechanical adjustment; an environmental control chamber configured to house the multi-axis robotic assembly and maintain a stable microenvironment by controlling the temperature between 35°C and 38°C, maintaining the relative humidity between 80% and 95%, and supplying a controlled gas mixture including carbon dioxide and oxygen;and a mechanical synchronization control unit operatively coupled to the multi-axis robotic assembly, the microfluidic dispensing assembly, and the optical imaging assembly, the mechanical synchronization control unit including a cam-driven mechanical coupler and a rotary timing shaft arranged to coordinate the actuation sequence of probe mechanical lancing and reagent delivery in a temporally deterministic manner; [Effects of the Invention]

[0023] This invention discloses an adaptive robotic system for gene editing and cell manipulation that integrates precision actuation, synchronized reagent delivery, and real-time optical feedback within a controlled biological reaction environment. This invention overcomes the limitations of existing microinjection, electroporation, and optical delivery systems to achieve precise, reproducible, and contamination-free delivery of genetic material at the single-cell level. [Brief explanation of the drawings]

[0024] These and other features, aspects, and advantages of the present disclosure will be better understood from the following detailed description when read in conjunction with the accompanying drawings, in which like reference symbols represent like parts throughout.

[0025] Figure 1 shows a block diagram of an adaptive robotic device for precision gene editing and cell manipulation.

[0026] Additionally, those skilled in the art will appreciate that elements in the figures are illustrated for simplicity and may not necessarily be drawn to scale. For example, a flowchart illustrates a method in terms of the most prominent steps involved to help improve understanding of aspects of the present disclosure. Furthermore, with respect to device structure, one or more components of the device may be represented in the drawings by conventional symbols, and the drawings may show only certain details relevant to understanding embodiments of the present disclosure, so as not to obscure the drawings with details that will be readily apparent to one skilled in the art having the benefit of the description herein. DETAILED DESCRIPTION OF THE INVENTION

[0027] For the purposes of promoting an understanding of the principles of the invention, reference will be made to the embodiments illustrated in the drawings and specific language will be used in describing the same, but no limitation on the scope of the invention is intended, it being understood that changes and further modifications in the illustrated systems, and further applications of the principles of the invention shown therein, are within the ordinary skill of one skilled in the art.

[0028] Those skilled in the art will realize that the foregoing general description and the following detailed description are exemplary and explanatory of the invention, but are not intended to be limiting. The use of "in one embodiment," "in another embodiment," or similar phrases throughout this specification means that a particular feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment," "in another embodiment," and similar phrases throughout this specification do not necessarily refer to the same embodiment, although they may.

[0029] The use of "comprises," "comprises," or other similar expressions is intended to be non-exclusive; a process or method containing a list of steps does not include only those steps, but may include other steps not expressly listed or inherent in the process or method. Similarly, the use of "comprises" preceding one or more devices, subsystems, elements, structures, or components does not, unless further constrained, exclude the presence of other devices, subsystems, elements, structures, or components, or additional devices, subsystems, elements, structures, or components.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs. The systems, methods, and examples described herein are illustrative only and not intended to be limiting.

[0031] The embodiments of the present specification are described in detail below with reference to the accompanying drawings.

[0032] Referring to Figure 1, a block diagram of an adaptive robotic system for gene editing and cell manipulation is shown. The system 100 includes a multi-axis robotic assembly (102) configured to position a cell manipulation probe relative to a target cell substrate with submicron precision, including multiple piezoelectrically driven precision displacement elements arranged via a set of flexure-based linkages and parallel kinematic joints; a mechanical end effector (104) mounted and coupled to the robotic assembly, configured to interchangeably mount at least one cell manipulation tool selected from a microinjection needle, a nanopipette, an electroporation electrode pair, or a microfluidic dispensing nozzle; and a microfluidic dispensing assembly (106) mechanically interfaced with the robotic assembly. The dispensing assembly includes a reagent manifold with pressure-regulated reagent channels, piezoelectrically actuated microvalves, and thermally controlled supply lines, and is configured to dispense nanoliter-level genetic material toward the target cells; an optical imaging assembly (108) optically aligned with the robotic assembly includes a variable-focus objective lens arrangement, a ball-screw-driven focusing stage with an anti-backlash nut assembly, and a highly sensitive optical sensor that provides real-time visual and spectroscopic feedback of the cell manipulation area.a calibration and positioning unit (110) mechanically coupled to the robot assembly, including a displacement encoder, load cell, and micrometer adjustment device configured for repeatable closed-loop mechanical adjustment to position the probe tip to within 1 micrometer of the optical focal plane; an environmental control chamber (112) configured to house the robot assembly and maintain a stable microenvironment maintaining a temperature of 35°C to 38°C, a relative humidity of 80% to 95%, and a controlled gas mixture containing carbon dioxide and oxygen; and a mechanical synchronization control unit (114) operatively coupled to the robot assembly, the microfluidic dispensing assembly, and the optical imaging assembly. The synchronization control unit includes a cam-driven mechanical coupler and a rotary timing shaft and is configured to coordinate the actuation sequence of the probe's mechanical puncturing and reagent delivery in a temporally deterministic manner.

[0033] In one embodiment, the multi-axis robotic assembly (102) comprises six independent axes of motion arranged in a parallel kinematic configuration, each incorporating a flexure hinge fabricated from a titanium alloy less than 100 micrometers thick, which minimizes backlash and hysteresis during probe positioning, and each actuator is driven by a piezoelectric stack providing linear displacement increments less than 100 nanometers, thereby enabling sub-micron positional resolution and high frequency response during cell penetration.

[0034] In one embodiment, the end effector mount (104) includes a force-limiting coupling with a torsion spring and slip clutch mechanism configured to limit the axial penetration force exerted by the probe to 5 micronewtons or less, thereby allowing the probe tip to penetrate cell membranes without rupturing them or inducing excessive shear stress, preserving cell viability during injection or electroporation procedures.

[0035] In one embodiment, the microfluidic dispensing assembly (106) includes a plurality of replaceable reagent cartridges, each cartridge having an internal microchannel coated with a biocompatible fluoropolymer layer configured to prevent adsorption or denaturation of nucleic acids and proteins, and the assembly further includes a pressure isolation diaphragm and precision dispense nozzle designed to deliver volumetric doses in the range of 1 to 100 nanoliters and have a flow rate stability of less than 1% of the nominal delivery rate.

[0036] In one embodiment, the optical imaging assembly (108) includes a fluorescence excitation and emission detection subsystem with a rotating optical filter wheel driven via a toothed belt drive by a stepper motor, enabling selective imaging of fluorescent cell markers corresponding to intracellular gene transfer events. The optical axis of the imaging assembly is mechanically aligned with the probe trajectory, ensuring that bioimaging and mechanical penetration occur along a common vector, ensuring precise targeting of the manipulation site.

[0037] In one embodiment, the calibration and alignment unit (110) is configured to perform real-time error compensation through measurement of displacement deviations by a linear encoder and corresponding mechanical feedback adjustments, performing iterative correction cycles based on convergence of the displacement vector until the probe position error with respect to a reference coordinate plane defined by the optical focal plane is less than 1 micron, thereby maintaining spatial coherence between the mechanical and optical subsystems throughout operation.

[0038] In one embodiment, the environmental control chamber (112) is equipped with thermoelectric heating and cooling plates, humidity control valves, and microblower circulating fans, arranged to maintain uniform thermal and gas gradients throughout the workspace. Additionally, the chamber contains integrated sensors for measuring temperature, humidity, dissolved oxygen, and pH, which are mechanically coupled to the actuated control valves and thermoelectric elements to continuously adjust environmental parameters to maintain physiological stability during live-cell manipulation and post-editing incubation.

[0039] In one embodiment, the mechanical synchronization control unit (114) comprises a rotating camshaft with a defined angular phase offset relative to the robotic actuator displacement, mechanically coupled to a microfluidic ejection valve actuation lever via a tension-adjustable connecting rod, such that reagent delivery occurs within 1 millisecond of maximum probe displacement, thereby establishing a fixed phase relationship between mechanical insertion and fluid ejection for deterministic time synchronization of intracellular delivery events.

[0040] In one embodiment, the robotic assembly (102) is mounted on a vibration-isolating mechanical base incorporating pneumatic damping isolators configured to attenuate external mechanical disturbances having frequencies up to 200 Hz, thereby preventing probe tip displacement during delicate cell manipulations and ensuring mechanical stability with less than 1 micron of deflection even under external vibration conditions.

[0041] In one embodiment, the optical imaging assembly (108) further comprises a high-speed sensor configured to capture images at a frame rate exceeding 1000 frames per second, said sensor being synchronized with the mechanical actuation sequence to monitor the membrane deformation dynamics and reagent diffusion in real time, said imaging feedback being utilized by a control unit to adjust the actuator displacement, thereby enabling closed-loop adaptive correction of penetration depth and reagent injection volume during each actuation cycle.

[0042] The adaptive robotic system for gene editing and cell manipulation described in the preceding claims operates as a fully integrated mechatronics and control architecture, integrating high-precision actuation, synchronized reagent delivery, and dynamic feedback compensation with technological control. The system is physically built around a multi-axis robotic assembly composed of flexure-based linkages, piezoelectric displacement actuators, and parallel kinematic joint structures. These mechanical components form the precision core of the system, enabling submicron precision positioning of microinjection or electroporation probes relative to cell substrates. Each actuator is individually driven by a closed-loop control process, continuously collecting displacement feedback from high-resolution encoders and inputting it into an adaptive position compensation technique implemented within the system control processor. This processor calculates real-time adjustments by comparing the target probe position with the instantaneous measured position and applying adaptive gain compensation to minimize cumulative error. The technique uses dynamic compensation coefficients that change depending on the actuator response history, thereby compensating for mechanical hysteresis, flexure nonlinearity, and thermal drift typically encountered in piezoelectrically driven positioning systems.

[0043] At the heart of this manipulation technology is a continuous feedback loop that synchronizes the robotic assembly's motion trajectory with the microfluidic dispensing assembly's reagent delivery cycle. During each manipulation event, the system first performs a calibration cycle using a calibration and alignment unit (comprising a displacement encoder, load cell, and micrometer adjuster). The control processor initiates a pre-calibration routine, advancing the probe tip toward a reference surface equipped with reflective markers while simultaneously monitoring force feedback to detect surface contact. The position difference between the optical focal plane, determined from image feedback, and the mechanical reference plane is then calculated. This offset value is iteratively reduced using an adaptive convergence technique that progressively reduces the probe tip deviation until it is less than 1 micrometer. The iterative process continues through successive correction cycles using a gradient descent-based error minimization method, enabling the system to dynamically adjust the mechanical probe and optical focus, even in the presence of small environmental disturbances and actuator creep.

[0044] Once calibrated, the environmental control chamber ensures the biological stability of the operating environment. The chamber is equipped with thermoelectric heating and cooling plates, a microblower, and gas valves, all controlled by proportional-integral-derivative feedback loops. A control processor continuously monitors sensor readings for temperature, humidity, pH, and dissolved oxygen levels and compares them to set targets. When deviations occur, actuators are activated to proportionally adjust the heating current, humidity valve opening, or gas inflow to restore equilibrium. This thermofluidic control technique maintains stability within narrow physiological limits, preserving the osmotic and metabolic conditions essential for viable cell survival even during long operating sequences. This control structure is implemented hierarchically: low-level control loops independently manage each environmental parameter, while higher-level monitoring loops manage interdependencies between parameters to prevent instability due to cross-coupling.

[0045] The microfluidic dispensing assembly operates based on a volumetric control technology that regulates pressure, valve actuation timing, and flow rate. Each microvalve is actuated by a piezoelectric diaphragm coupled to a spring-return plunger, and a control processor adjusts valve displacement by applying a pulse-width-controlled electrical signal that directly corresponds to the desired reagent volume. The technology uses an integrated sensor to monitor the pressure difference between the inlet and outlet channels and regulates the flow rate by adjusting the actuation voltage and pulse duration. The dispensing cycle follows a time-controlled sequence synchronized with the mechanical movement of the probe. A mechanical synchronization control unit consisting of a cam-driven coupling mechanism provides deterministic timing for reagent delivery. The technology maps the angular position of the camshaft to the linear displacement of the probe tip, ensuring that reagent injection occurs precisely at the point of maximum probe penetration. This mechanical-electronic synchronization eliminates potential delays due to software lags and ensures strict temporal alignment between genetic material delivery and the probe's physical penetration into the cell.

[0046] During the gene transfer process, the optical imaging device continuously captures visual and spectroscopic feedback of the cell manipulation area. Operating within the control processor, imaging technology performs real-time image registration, focal plane tracking, and motion compensation. The processor identifies the optical center of gravity of the target cell from the live image and compares it with the probe's current mechanical coordinates. Any discrepancy is interpreted as misalignment or misalignment and prompts automatic correction commands to the robotic actuators. In fluorescence imaging mode, the optical subsystem analyzes the emission intensity from the labeled cell area to confirm successful reagent transfer. In Raman spectroscopy mode, the system extracts characteristic vibrational spectra to verify the presence and chemical integrity of the transferred genetic material. These optical signals are processed by classification technology to distinguish between successful and unsuccessful transfers, providing direct feedback for optimizing subsequent cycles.

[0047] The adaptive control logic that controls the probe's motion integrates both position feedback and force sensing to achieve precise penetration depth without membrane rupture. This technology monitors the output of a microload cell to estimate the instantaneous resistance encountered by the probe tip. A sudden increase in resistance followed by partial relaxation is determined as membrane penetration, at which point the control technology automatically halts further probe advancement and triggers reagent injection. This decision-making process is governed by a hybrid threshold- and derivative-based detection model that ensures the transition from mechanical insertion to chemical delivery occurs without operator intervention. The same control logic ensures smooth probe retraction after injection, maintaining a constant velocity to prevent cell deformation due to suction.

[0048] The high-level operational cycle is managed by an intelligent process scheduler implemented in the control processor. The scheduler divides each operational event into discrete time steps: pre-calibration, approach, contact detection, reagent delivery, retraction, and validation. Each step is associated with predefined control objectives and safety thresholds, which are continuously evaluated by the processor. The technology maintains an internal state machine and transitions between steps only if the success criteria of the preceding step are met. For example, the system will not begin reagent delivery until both optical and mechanical criteria confirm stable membrane contact. This state-based control ensures deterministic and repeatable sequence execution, eliminating the uncertainties associated with manual intervention and timing inconsistencies.

[0049] For multicellular or population-scale manipulations, the sample translation stage operates based on a motion planning technique that optimizes the translation path between wells or target cells to minimize migration time while maintaining precise spatial alignment with the imaging system. The control processor calculates two-dimensional translation vectors based on pre-mapped cell array coordinates and corrects for cumulative mechanical drift after each manipulation cycle using feedback from a calibration unit. This stage control technique ensures that each new cell position is aligned to within 10 micrometers of the optical focus center before the next injection cycle begins, achieving uniformity in high-throughput gene editing experiments.

[0050] Mechanical synchronization and calibration techniques operate in parallel with the environmental and optical feedback systems, enabling continuous adaptive correction throughout long-term experiments. In actual operation, a control processor fuses data from displacement sensors, load cells, optical feedback, and environmental sensors to form a unified control dataset. This data is evaluated by sensor fusion technology to calculate the optimal set of operating parameters to maintain mechanical and environmental equilibrium. For example, if thermal expansion of actuator components due to long-term operation is detected, the actuator's zero point is recalibrated while maintaining real-time alignment of the probe and optical focus. Similarly, if image feedback indicates a small focus shift due to refractive index fluctuations in the culture medium, the focus stage automatically adjusts to restore image clarity without interrupting the ongoing mechanical cycle. The complete control technology therefore functions as a hierarchical adaptive feedback system. At the lowest level, individual actuators and valves are regulated by real-time proportional-integral control. At intermediate levels, synchronization and error-correction routines govern the coordinated actions between subsystems. At the highest level, monitoring processes continuously evaluate biological and mechanical outcomes and dynamically adjust operating parameters such as injection pressure, penetration speed, and environmental set points. This hierarchical structure ensures the system's self-stabilizing and self-correcting capabilities, enabling high reproducibility and safety when manipulating living cells.

[0051] In essence, this adaptive robotic system integrates mechanical determinism with intelligent, feedback-driven adaptability. Its technical architecture continuously aligns mechanical precision with biological sensitivity, ensuring that all processes, from probe positioning and calibration to reagent delivery and environmental control, are coordinated through real-time, data-driven decision-making. By combining high-speed mechanical control with continuous optical and environmental feedback, this system enables precise, automated, and contamination-free cell manipulation suitable for advanced gene editing applications, establishing a new standard for precision and reliability in microbiomechanical devices.

[0052] The adaptive robotic device consists of a vibration-damped aluminum alloy base platform supporting a multi-axis robot assembly. The robot assembly consists of six precision actuators arranged in a parallel kinematic configuration, enabling translational and rotational motion in the X, Y, Z, θx, θy, and θz axes. The flexure joints are fabricated from controlled-thickness titanium foil (30–80 μm) to ensure compliance and eliminate backlash. The actuators are driven by piezoelectric stacks with a displacement resolution of less than 100 nanometers.

[0053] The distal end of the robotic assembly is fitted with an end-effector mount, a precision coupling system that secures interchangeable tools such as microinjection needles, nanopipettes, or dual-electrode pairs for electroporation. This mount incorporates a force-limiting coupling with a torsion spring and slip clutch to prevent excessive penetration force during cell puncture.

[0054] The microfluidic dispensing assembly, mechanically mounted on a robotic base, contains multiple reagent reservoirs with pressure isolation diaphragms and piezo-actuated valves. Reagents, including clustered regularly interspaced short palindromic repeats and associated protein complexes, donor templates, and buffer solutions, are stored within channels lined with a biocompatible polymer to prevent nucleic acid adsorption.

[0055] The imaging assembly consists of an adjustable focus stage, fluorescence excitation optics, and a high-speed complementary metal-oxide semiconductor sensor. The focus is adjusted using a ball screw drive coupled with an anti-backlash nut to continuously maintain focal depth correction. A rotating filter wheel driven by a stepping motor allows selective observation of fluorescent channels corresponding to green fluorescent protein, red fluorescent protein, or fluorescence resonance energy transfer markers, enabling confirmation of transfection success during operation. The calibration unit employs a planar reference stage with a built-in load cell to detect minute deviations during calibration.

[0056] The entire device operates within an environmentally controlled chamber, maintaining temperature (36.8 ± 0.2°C), relative humidity (90 ± 5%), and CO2 concentration (5 ± 1%). The chamber is constructed with a double-walled acrylic enclosure incorporating a thermoelectric heating plate, humidity control valve, and microblower circulation unit. Unlike conventional software-only control systems, this device incorporates a mechanical synchronization interlock—a cam-driven rotary coupler—to physically synchronize the timing of robotic movements and reagent injection.

[0057] During operation, the system performs an initialization cycle and acquires calibration data from displacement encoders and optical alignment sensors. The robotic assembly aligns the probe to a single cell via optical feedback. Once the target coordinate is reached, the microfluidic system synchronizes via a mechanical coupler and dispenses the required genetic reagent. After dispensing, the system maintains the cell in a stable environment for observation and recovery under fluorescent monitoring. This adaptive robotic device enables high-throughput, contamination-free, and reproducible cell manipulation with mechanical precision of less than 0.5 μm. It integrates mechanical synchronization rather than purely digital timing to ensure deterministic performance with negligible latency. Flexure joint architecture eliminates backlash and mechanical hysteresis. An environmental control and optical subsystem maintains stable cell viability during multi-step editing cycles. Technical benefits include increased editing efficiency (>95%), reduced off-target modifications, and improved post-editing survival (>90%) for both mammalian and stem cells.

[0058] The drawings and the foregoing description illustrate exemplary embodiments. Those skilled in the art will understand that one or more of the described elements may be combined into a single functional element. Alternatively, certain elements may be divided into multiple functional elements. Elements of one embodiment may be added to another embodiment. For example, the order of processes described herein may be changed and is not limited to the methods described herein. Furthermore, the operations in the flow diagrams need not necessarily be implemented in the order shown, and not all operations need necessarily be performed. Furthermore, operations that are independent of other operations may be performed in parallel with other operations. The scope of the embodiments is in no way limited by these specific examples. Numerous variations are possible, including differences in structure, dimensions, use of materials, and the like, whether or not explicitly described in the specification. The scope of the embodiments is at least as broad as that given by the following claims.

[0059] Although advantages, other benefits, and solutions to problems have been described above with respect to particular embodiments, these advantages, benefits, solutions to problems, and elements that may provide or facilitate any advantage, benefit, or solution should not be construed as required, necessary, or essential features or elements of any claim or all claims.

Claims

1. 1. An adaptive robotic system for gene editing and cell manipulation, comprising: a multi-axis robotic assembly including a plurality of piezoelectrically driven precision displacement elements arranged via a set of flexure-based linkages and parallel kinematic joints, configured to position a cell manipulation probe relative to a target cell substrate with sub-micron precision; a mechanical end effector mount coupled to the multi-axis robotic assembly and configured to exchangeably secure at least one cell manipulation tool selected from a microinjection needle, a nanopipette, an electroporation electrode pair, or a microfluidic dispensing nozzle, the end effector mount including a quick-release coupling assembly with mechanical positioning dowels and magnetic retention means, allowing automated tool exchange in a sterile environment without manual contact; a microfluidic dispensing assembly mechanically connected to the multi-axis robotic assembly, the dispensing assembly including a reagent manifold having pressure-regulated reagent channels, piezoelectrically actuated microvalves, and temperature-controlled supply lines configured to eject genetic material in nanoliter-level volumes toward target cells; an optical imaging assembly optically aligned with the multi-axis robotic assembly, the optical imaging assembly comprising a variable focus objective lens arrangement, a ball screw driven focusing stage with an anti-backlash nut assembly, and a highly sensitive optical sensor that provides real-time visual and spectroscopic feedback of the cell manipulation area; a calibration and alignment unit mechanically coupled to the multi-axis robotic assembly, the calibration and alignment unit comprising a displacement encoder, a load cell, and a micrometer adjuster, configured to repeatably align the probe tip to within 1 micron of the optical focal plane by closed-loop mechanical adjustment; an environmental control chamber configured to house the multi-axis robotic assembly and maintain a stable microenvironment by controlling the temperature in the range of 35° C. to 38° C., maintaining a relative humidity in the range of 80% to 95%, and supplying a controlled gas mixture containing carbon dioxide and oxygen; and A mechanical synchronization control unit operatively coupled to the multi-axis robot assembly, the microfluidic dispensing assembly, and the optical imaging assembly, the mechanical synchronization control unit including a cam-driven mechanical coupler and a rotary timing shaft arranged to coordinate the actuation sequence of the probe's mechanical puncturing and reagent delivery in a temporally deterministic manner.

2. the multi-axis robotic assembly includes six independent axes of motion arranged in a parallel kinematic configuration, each incorporating a flexure hinge fabricated from a titanium alloy less than 100 micrometers thick, the configuration minimizing backlash and hysteresis during probe positioning; each actuator is driven by a piezoelectric stack providing linear displacement increments less than 100 nanometers, thereby achieving sub-micron positional resolution and high frequency response during cell penetration; the end effector mounting portion has a force-limiting coupling with a torsion spring and slip clutch mechanism that limits the axial penetration force applied by the probe, and the probe tip is configured to penetrate the cell membrane without rupturing the membrane or inducing excessive shear stress; 10. The adaptive robotic system for gene editing and cell manipulation of claim 1, wherein the microfluidic dispensing assembly includes a plurality of replaceable reagent cartridges, each with an internal microchannel coated with a biocompatible fluororesin layer and configured to prevent adsorption or denaturation of nucleic acids and proteins, and the multi-axis robotic assembly further includes a pressure isolation diaphragm and a precision dispense nozzle designed to deliver volumetric doses in the range of 1 to 100 nanoliters, with a flow rate stability of less than 1% of the nominal dispense rate.

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