Patent Description:
Surgical robotic systems are used in minimally invasive medical procedures because of their increased accuracy and expediency. In surgical robotic systems, a robot arm supports a surgical instrument having an end effector mounted thereto by a wrist assembly. In operation, the robot arm inserts the surgical instrument into or holds a surgical instrument in a small incision via a surgical portal or a natural orifice of a patient to position the end effector at a work site within a patient's body.

Most of the surgical robotic systems on the market are heavy and stationary requiring a motor driven pallet jack to be relocated. In some of the more modern surgical robotic systems, the robot arm is supported on a movable surgical robotic cart having a base portion with a set of casters. This is beneficial because the surgical robotic systems can be moved between various rooms and between various positions relative to the surgical table as needed, without a pallet jack. <CIT> discloses a process and system for dynamically positioning a surgical robot in an operating room based on workspace and task requirements, wherein a desired robot final location, the path and velocity of the robot are calculated based on preselected constraints that include the robot must always be able to come to a full stop before impact, including sensors for guiding the base of the device to the optimal position.

However, minimally invasive medical procedures require a high degree of accuracy, precision, and speed, and, therefore, movable surgical robotic systems used for minimally invasive medical procedures need to be precisely placed relative to the surgical table to achieve optimal positioning for specific surgical procedures.

Accordingly, there is a need to precisely locate and position a surgical robotic cart relative to the surgical table, and to do so with a high degree of accuracy, precision, and movability.

The invention is defined by independent claim1. No methods for treatment of the human or animal body by surgery or therapy are claimed.

Provided in accordance with aspects of the present disclosure is a method of placing a surgical robotic cart assembly. The method includes, determining a first position of a first surgical robotic cart assembly relative to a surgical table, calculating a path for the first surgical robotic cart assembly towards a second position of the first surgical robotic cart assembly relative to the surgical table, wherein in the second position, the first surgical robotic cart assembly is spaced-apart a first safe distance from the surgical table, moving the first surgical robotic cart assembly autonomously towards the second position thereof, and detecting a potential collision along the path of the first surgical robotic cart assembly as the first surgical robotic cart assembly moves towards the second position thereof.

The method further includes determining a first position of a second surgical robotic cart assembly relative to the first surgical robotic cart assembly and the surgical table, calculating a path for the second surgical robotic cart assembly towards a second position of the second surgical robotic cart assembly relative to the first surgical robotic cart assembly and the surgical table, wherein in the second position, the second surgical robotic cart assembly is spaced-apart a second safe distance from the first surgical robotic cart assembly and a third safe distance from the surgical table, moving the second surgical robotic cart assembly autonomously towards the second position thereof, and detecting a potential collision along the path of the second surgical robotic cart assembly as the second surgical robotic cart assembly moves towards the second position thereof.

The method further includes obtaining a first sensor data from a visual sensor to determine the first position of the first surgical robotic cart assembly and to determine the first position of the second surgical robotic cart assembly.

The method further includes obtaining a second sensor data from a floor sensor to determine the first position of the first surgical robotic cart assembly and to determine the first position of the second surgical robotic cart assembly.

In another aspect of the present disclosure, the method may include obtaining a third sensor data from the first surgical robotic cart assembly to determine the first position of the second surgical robotic cart assembly.

In aspects of the present disclosure, the method may include obtaining a fourth sensor data from the surgical table to determine the first position of the first surgical robotic cart assembly.

In one aspect of the present disclosure, the method may include updating an environmental map to incorporate the first position of the first surgical robotic cart assembly and the first position of the second surgical robotic cart assembly.

In another aspect of the present disclosure, the method may include determining a third position for the second surgical robotic cart assembly upon detecting the potential collision between the second surgical robotic cart assembly and the first surgical robotic cart assembly.

In yet another aspect of the present disclosure, the method may include determining the requirement for troubleshooting of the second surgical robotic cart assembly upon detecting the potential collision between the second surgical robotic cart assembly and the first surgical robotic cart assembly.

In still another aspect of the present disclosure, the method may include moving the first surgical robotic cart assembly and the second surgical robotic cart assembly simultaneously towards the respective second positions thereof.

Provided in accordance with another aspect of the present disclosure is a method of positioning a plurality of surgical robotic cart assemblies within an operating room. The method includes, obtaining a first sensor data from an operating room sensor, determining a first position of a first surgical robotic cart assembly and determining a first position of a second surgical robotic cart assembly, the first surgical robotic cart assembly including a first base portion having a first sensor and a first transmitter, and the second surgical robotic cart assembly including a second base portion having a second sensor and a second transmitter, calculating a first path for the first surgical robotic cart assembly towards a second position of the first surgical robotic cart assembly and calculating a second path for the second surgical robotic cart assembly towards a second position of the second surgical robotic cart assembly, moving the first surgical robotic cart assembly and the second surgical robotic cart assembly autonomously towards the second positions, respectively, thereof, detecting a potential collision along the first path and the second path as the first surgical robotic cart assembly moves towards the second position thereof and as the second surgical robotic cart assembly moves towards the second position thereof, and updating an environmental map with the second position of the first surgical robotic cart assembly and with the second position of the second surgical robotic cart assembly upon moving the first and second surgical robotic cart assemblies to the second positions, respectively, thereof.

In one aspect of the present disclosure, the method may include determining the first position of the first surgical robotic cart assembly and determining the first position of the second surgical robotic cart assembly from the first sensor data obtained from the operating room sensor.

In another aspect of the present disclosure, the method may include obtaining a second sensor data from the first sensor of the first surgical robotic cart assembly to determine the first position of the second surgical robotic cart assembly.

In yet another aspect of the present disclosure, the method may include obtaining a third sensor data from the second sensor of the second surgical robotic cart assembly to determine the first position of the first surgical robotic cart assembly.

In still another aspect of the present disclosure, the method may include calculating the second position of the first surgical robotic cart assembly and calculating the second position of the second surgical robotic cart assembly to maintain a first safe distance between the first and second surgical robotic cart assemblies and to maintain a second safe distance between the first and second surgical robotic cart assemblies and a surgical table.

In one aspect of the present disclosure, the method may include moving the second surgical robotic cart assembly autonomously to a third position thereof when a distance between the first and second surgical robotic cart assemblies is less than the first safe distance.

In another aspect of the present disclosure, the method may include updating the environmental map to register the third position of the second surgical robotic cart assembly as a current position of the second surgical robotic cart assembly when the second surgical robotic cart assembly is moved to the third position thereof.

Provided in accordance with yet another aspect of the present disclosure is a surgical robotic cart assembly. The surgical robotic cart assembly includes a robotic arm and a base portion configured to operatively support the robotic arm thereon. The base portion includes a visual guidance system having a projector mounted on the base portion, a display mounted on the base portion, and a plurality of lights mounted on the base portion and spaced apart thereon. The projector is configured to project a pattern corresponding to a movement direction towards a target location. The display is configured to represent a visual indication corresponding to the movement direction towards the target location. At least one of the plurality of lights is configured to selectively illuminate corresponding to the movement direction towards the target location.

In one aspect of the present disclosure, the pattern projected by the projector may be configured to change as the base portion is moved along the pattern towards the target location.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of exemplary embodiment(s) given below, serve to explain the principles of the disclosure, wherein:.

The present disclosure provides systems and methods facilitating automated and manual means for locating and moving one or more surgical robotic cart assemblies towards a target location to optimally position one or more robotic arm(s) relative to a surgical table. Embodiments of the present disclosure are described in detail with reference to the drawings, in which like reference numerals designate identical or corresponding elements in each of the several views.

Referring initially to <FIG>, a surgical system, such as, for example, a robotic surgical system <NUM> is shown. In embodiments, robotic surgical system <NUM> is configured for use in an operating room "OR," and specifically configured for use on a patient "P" lying on a surgical table "ST" to be treated in a minimally invasive manner by means detailed below. Robotic surgical system <NUM> generally includes a plurality of robotic arms <NUM>, <NUM>; a control device <NUM>; and an operating console <NUM> coupled with control device <NUM>.

In embodiments, surgical table "ST" includes one or more sensor(s) <NUM> and a transmitter <NUM> disposed about the periphery thereof. Sensor(s) <NUM> may be configured to receive, for example, radio frequency (RF) signals (e.g., ultra wide band RF signals); ultrasound waves; and infrared (IR) signals, and transmitter <NUM> may be configured to emit the same.

Robotic arms, such as for example, robotic arm <NUM> may be coupled to the surgical table "ST. " Alternatively, robotic arms, such as for example, robotic arm <NUM>, may be supported on a surgical robotic cart assembly <NUM>.

Operating console <NUM> includes a display device <NUM>, which is set up in particular to display three-dimensional images; and manual input devices <NUM>, <NUM>, by means of which a person (not shown), e.g., a surgeon, is able to telemanipulate robotic arms <NUM>, <NUM> in a first operating mode, as known in principle to a person skilled in the art. Each of the robotic arms <NUM>, <NUM> may be composed of a plurality of members, which are connected through joints, and may include a surgical instrument, such as, for example, an electromechanical instrument <NUM> removably attached thereto for treating patient "P" in a minimally invasive manner.

Robotic arms <NUM>, <NUM> may be driven by electric drives (not shown) that are connected to control device <NUM>. Control device <NUM> (e.g., a computer) is set up to activate the drives, in particular by means of a computer program, in such a way that robotic arms <NUM>, <NUM> and thus electromechanical instrument <NUM> (including the electromechanical end effector (not shown)) execute a desired movement according to a movement defined by means of manual input devices <NUM>, <NUM>. Control device <NUM> may also be set up in such a way that it regulates the movement of robotic arms <NUM>, <NUM> and/or of the drives. In embodiments, surgical robotic cart assembly <NUM> may be controlled via manual input devices <NUM>, <NUM>. Additionally/alternatively, control device <NUM> may be configured to regulate the movement of surgical robotic cart assembly <NUM>.

Robotic surgical system <NUM> may also include more than two robotic arms <NUM>, <NUM>, the additional robotic arms likewise being connected to control device <NUM> and being telemanipulatable by means of operating console <NUM>. A surgical instrument, for example, electromechanical instrument <NUM> (including the electromechanical end effector), may also be attached to the additional robotic arm. Robotic surgical system <NUM> may also include a plurality of surgical robotic cart assemblies <NUM> for supporting robotic arms <NUM>, such as, for example, a first surgical robotic cart assembly 100a and a second surgical robotic cart assembly 100b, as shown in <FIG>. First and second surgical robotic cart assemblies 100a, 100b are likewise configured to be connected to control device <NUM> and/or manual input devices <NUM>, <NUM>.

In embodiments, robotic surgical system <NUM> further includes a database <NUM> in communication with one or more operating room sensors <NUM>. Database <NUM> is provided to store one or more environmental maps 12a representing the locations of entities (e.g., surgical table "ST" and first and second surgical robotic cart assemblies 100a, 100b) disposed within operating room "OR. " Environmental maps 12a may be generated from pre-programed input and/or generated from data collected from operating room sensors <NUM> and/or data gathered from surgical table "ST" and first and second surgical robotic cart assemblies 100a, 100b, as will be detailed below. Environmental maps 12a include a static map portion 12a1 and a dynamic map portion 12a2. Static map portion 12a1 represents dimensions or boundaries of operating room "OR" and the locations of any landmarks such as, for example, surgical table "ST. " Dynamic map portion 12a2 represents a current working environment generated by iteratively incorporating data informing of the current positions of movable entities such as, for example, first and second surgical robotic cart assemblies 100a, 100b.

Database <NUM> may also include patient data 12b such as, for example, pre-operative data and/or anatomical atlases assigned to patient "P. " Database <NUM> may also be coupled with operating console <NUM> such that environmental maps 12a and/or patient data 12b may be displayed on display device <NUM>.

Operating room sensors <NUM> may include a visual sensor 14a mounted to the ceiling of operating room "OR" and a floor sensor 14b disposed about surgical table "ST. " Visual sensor 14a may include one or more cameras, video cameras, and/or imagers configured to detect the three-dimensional geometry of a base portion <NUM> of surgical robotic cart assembly <NUM> (<FIG>) and surgical table "ST. " In embodiments, visual sensor 14a may be configured to identify and track a unique marker "M" such as, for example, an indicia and/or geometric marking disposed on base portion <NUM> of surgical robotic cart assembly <NUM>. Floor sensor 14b may be incorporated within a sensorized floor covering and configured to detect a pose or orientation of base portion <NUM> of surgical robotic cart assembly <NUM>. Database <NUM> and operating room sensors <NUM> are coupled with control device <NUM> such that control device <NUM> may incorporate the information from environmental maps 12a, patient data 12b, and operating room sensors <NUM> in regulating the movement of surgical cart robotic assembly <NUM>.

As shown in <FIG>, the various components of robotic surgical system <NUM> detailed above may be coupled to one another via a wired and/or wireless means to send and receive data therebetween.

For a detailed discussion of the construction and operation of a robotic surgical system, reference may be made to <CIT>, entitled "Medical Workstation," the entire contents of which are cited herein.

With reference to <FIG>, one exemplary embodiment of surgical robotic cart assembly <NUM> configured for use in accordance with the present disclosure is generally identified, although it is also envisioned that the aspects and features of the present disclosure be similarly incorporated into any suitable surgical robotic cart assembly. Surgical robotic cart assembly <NUM> generally includes robotic arm <NUM>, a vertical column <NUM>, and a base portion <NUM>. Base portion <NUM> includes a plurality of casters <NUM>, <NUM>, and <NUM> coupled thereto. Each of the casters <NUM>, <NUM>, and <NUM> is configured to swivel about a respective pivot axis, and configured to allow surgical robotic cart assembly <NUM> to move, or to inhibit movement of surgical robotic cart assembly <NUM>.

For a detailed discussion of the construction and operation of a surgical robotic car assembly, reference may be made to <CIT>, entitled "SURGICAL ROBOTIC CART WITH SELECTIVE WHEEL ALIGNMENT," and/or <CIT>, entitled "GRAVITY COMPENSATION FOR ROBOTIC ARM," the entire contents of each of which are cited herein.

Continuing with <FIG>, surgical robotic cart assembly <NUM> includes a camera <NUM>, one or more sensor(s) <NUM>, a transmitter <NUM>, and a unique marker "M" disposed on base portion <NUM>. In embodiments, sensor(s) <NUM> may be spaced apart and disposed along the periphery of base portion <NUM>, such that, the relative pose or orientation of base portion <NUM> may be obtained by determining which of the sensor(s) <NUM> is first to receive a signal from a source, such as, for example, transmitter <NUM> of a second surgical robotic cart assembly 100b (<FIG>) and/or transmitter <NUM> of surgical table "ST. " Alternatively, camera <NUM>, sensor(s) <NUM>, transmitter <NUM>, and unique marker "M" may be disposed about other components (e.g., vertical column <NUM>) of surgical robotic cart assembly <NUM>.

Similar to sensor(s) <NUM> of surgical table "ST," sensor(s) <NUM> may be configured to receive, for example, RF signals (e.g., ultra wide band RF signals); ultrasound waves; and IR signals, and similar to transmitter <NUM> of surgical table "ST," transmitter <NUM> may be configured to emit the same. As will be detailed below with reference to <FIG>, it is contemplated that sensor(s) <NUM> and transmitter <NUM> of surgical table "ST" and camera <NUM>, sensor(s) <NUM>, and transmitter <NUM> of surgical robotic cart assembly <NUM> are configured to cooperate to provide an accurate and robust localization of, for example, first surgical robotic cart assembly 100a relative to second surgical robotic cart assemblies 100b and surgical table "ST" disposed within operating room "OR. " Further, sensor(s) <NUM> and transmitter <NUM> of surgical table "ST" and camera <NUM>, sensor(s) <NUM>, and transmitter <NUM> are configured to cooperate to provide an accurate measurement of the relative orientation of each of the plurality of surgical robotic cart assemblies <NUM> relative to surgical table "ST.

With reference to <FIG>, in conjunction with <FIG> and <FIG>, an exemplary method of using robotic surgical system <NUM> for automatically positioning first surgical robotic cart assembly 100a and second surgical robotic cart assembly 100b around surgical table "ST" such that, robotic arms <NUM> of first and second surgical robotic cart assemblies 100a, 100b are optimally positioned relative to each other and surgical table "ST" to complete a specified task, is described. Although only two surgical robotic cart assemblies are described, it is contemplated that any number of surgical robotic cart assemblies may be incorporated into robotic surgical system <NUM>. The process of positioning first and second surgical robotic cart assemblies 100a, 100b around surgical table "ST" generally includes a localization phase (e.g., step S200), a path planning phase (e.g., step S208), a movement phase (e.g., step S214), and a confirmation of placement phase (e.g., step S224), as will be detailed below. It is contemplated that robotic surgical system <NUM> provides a safety system incorporated into the various phases detailed below, to prevent inadvertent collisions between first and second surgical robotic cart assemblies 100a, 100b and any entities located within operating room "OR. " This safety system would incorporate sensors, such as for example LIDAR which generates a cloud of 3D surface points of objects, that discern the physical presence of the edges or periphery/boundary of the arms and table relative to one another. The safety system would combine this boundary information with the current movement as well as predicted future movement of the carts relative to one another and the surgical table to decide if a collision is possible and if so adjusted the path(s) of the cart(s) relative to one another and/or the surgical table. This safety system could also combine the known geometric configuration of the arms and/or surgical table along with the known pose of the same to compute potential collisions and take corrective action to prevent this. In this way, sensors for measurement of surface boundaries would not be necessary. Note that in the case of assessing potential collisions with objects of unknown prior geometry, such as operating room staff and/or equipment moving about the room, the use of surface geometry measurement sensors is desired.

Turning first to <FIG> and <FIG>, in step S200, the localization phase is initiated. Following the initiation of the localization phase, in step S202, sensor data is obtained to determine a current position "PA1" of first surgical robotic cart assembly 100a relative to second surgical robotic cart assembly 100b and surgical table "ST" and a current position "PB1" of second surgical robotic cart assembly 100b relative to first surgical robotic cart assembly 100a and surgical table "ST" in step S204. In embodiments, sensor data is obtained from visual sensor 14a and floor sensor 14b of operating room "OR. " Alternatively/additionally, current positions "PA1" and "PA2" of first and second surgical robotic cart assemblies 100a, 100b, respectively, may be determined by sending and receiving signals between first and second surgical robotic cart assemblies 100a, 100b and surgical table "ST.

In embodiments, if an operator or clinician "C" is located within operating room "OR," the clinician "C" may be provided with a tag <NUM> configured to transmit a signal corresponding to a current position "PC1" of clinician "C" relative to first and second surgical robotic cart assemblies 100a, 100b, and surgical table "ST. " The current position "PC1" of clinician "C" may be determined by one or more of visual sensor 14a, floor sensor 14b, sensor(s) <NUM> of surgical table "ST," and/or camera <NUM> and sensor(s) <NUM> of each of first and second surgical robotic cart assemblies 100a, 100b.

Following the localization phase, in step S206, environmental maps 12a are updated by incorporating the current positions "PA1," "PB1," and "PC1" of first and second surgical robotic cart assemblies 100a, 100b and clinician "C," respectively, into the dynamic map portion 12a2, and incorporating or aligning the dynamic map portion 12a2 with the static map portion 12a1 to provide a representation of the current positions "PA1," "PB1," and "PC1" within the boundaries of operating room "OR.

Turning next to <FIG>, in conjunction with <FIG>, in step S208, the path planning phase is initiated by control device <NUM>. In step S210, using at least the updated environmental maps 12a gathered during the localization phase and the patient data 12b, control device <NUM> calculates a second, target position "PA2" for first surgical robotic cart assembly 100a and a second, target position "PB2" for second surgical robotic cart assembly 100b to optimally position each robotic arm <NUM> (<FIG>) relative to surgical table "ST. " Step S210 includes plotting a path "X1" for first surgical robotic cart assembly 100a and a path "X2" for second surgical robotic cart assembly 100b which avoids any obstructions en route to second positions "PA2" and "PB2" of first and second surgical robotic cart assemblies 100a, 100b, respectively.

In embodiments, as illustrated in <FIG>, control device <NUM> calculates path "X1" of first surgical robotic cart assembly 100a to avoid a collision between first surgical robotic cart assembly 100a and surgical table "ST," and calculates path "X2" of second surgical robotic cart assembly 100b to avoid a collision between second surgical robotic cart assembly 100b and clinician "C.

Next in step S212, if control device <NUM> determines that there will be a safe distance "D1" between first and second surgical robotic cart assemblies 100a, 100b as well as a safe distance "D2" between each of first and second surgical robotic cart assemblies 100a, 100b and surgical table "ST" when first and second surgical robotic cart assemblies 100a, 100b are in second positions "PA2" and "PB2," respectively, control device <NUM> instructs first and second surgical robotic cart assemblies 100a, 100b to move towards the respective second positions "PA2" and "PB2.

However, if control device <NUM> determines that the distance between first and second surgical robotic cart assemblies 100a, 100b will be less than safe distance "D1" and/or the distance between each of first and second surgical robotic cart assemblies 100a, 100b and surgical table "ST" will be less than safe distance "D2," when first and second surgical robotic cart assemblies 100a, 100b are in second positions "PA2" and "PB2," respectively, robotic surgical system <NUM> is returned to step S202 to obtain further sensor data as described above.

With reference to <FIG>, <FIG>, and <FIG>, once the path planning phase is completed, the movement phase is initiated in step S214 during which first and second surgical robotic cart assemblies 100a, 100b move autonomously towards second positions "PA2" and "PB2," respectively, based on the instructions received from control device <NUM>. It is contemplated that first and second surgical robotic cart assemblies 100a, 100b may be moved consecutively or simultaneously towards second positions "PA2" and "PB2," respectively. It is contemplated that first and second surgical robotic cart assemblies 100a, 100b may be provided with powered wheels and steering assemblies for automated movements thereof.

In step S216, as first and second surgical robotic cart assemblies 100a, 100b move towards second positions "PA2" and "PB2," respectively, sensor(s) <NUM> of each of first and second surgical robotic cart assemblies 100a, 100b are configured to continuously detect for signs of close-in contact potential, beyond prior detection of obstructions during the path planning phase as described above. Close-in contact potential can be computed using well established techniques from computer graphics and robotic navigation (e.g. see "<NPL>).

In step S216, with first and second surgical robotic cart assemblies 100a, 100b located in second positions "PA2" and "PB2," respectively, as shown in <FIG>, if a potential contact distance "D3" between first and second surgical robotic cart assemblies 100a, 100b is detected by sensor(s) <NUM> of second surgical robotic cart assembly 100b, in step S218, second surgical robotic cart assembly 100b is configured to determine whether troubleshooting is required.

In step S220, if troubleshooting is required, second surgical robotic cart assembly 100b is configured to stop movement and broadcast a signal via transmitter <NUM> to clinician "C" in operating room "OR" and/or observers (not shown) outside of operating room "OR" indicating the potential for collision with first surgical robotic cart assembly 100a or surgical table "ST.

In step S222, if troubleshooting is not required, second surgical robotic cart assembly 100b is configured to signal via transmitter <NUM> to control device <NUM> indicating the potential for collision with first surgical robotic cart assembly 100a or surgical table "ST. " Following the indication from second surgical robotic cart assembly 100b, control device <NUM> determines a third position "PB3" for second surgical robotic cart assembly 100b such that, second surgical robotic cart assembly 100b avoids collision with first surgical robotic cart assembly 100a or surgical table "ST. " It is contemplated that third position "PB3" of second surgical robotic cart assembly 100b is calculated to enable second surgical robotic cart assembly 100b to continue performing its specified task while avoiding a collision with first surgical robotic cart assembly 100a and surgical table "ST.

Once third position "PB3" of second surgical robotic cart assembly 100b is determined, robotic surgical system <NUM> is returned to step S214 wherein the movement phase is initiated to move second surgical robotic cart assembly 100b to third position "PB3. " Though not specifically illustrated in <FIG>, it is contemplated that first surgical robotic cart assembly 100a is configured to operate similar to second surgical robotic cart assembly 100b in response to detecting the potential contact distance "D3" between first and second surgical robotic cart assemblies 100a, 100b.

Continuing with <FIG>, alternatively, if the potential contact distance "D3" between first and second surgical robotic cart assemblies 100a, 100b is not detected by sensor(s) <NUM> of second surgical robotic cart assembly 100b following step S216, in step S224, the confirmation of placement phase in initiated. Once control device <NUM> determines that first and second surgical robotic cart assemblies 100a, 100b are in the respective specified positions (e.g., positions "PA2" and "PB2" or "PB3"), in step S226, environmental maps 12a are updated similar to the process in step S204. Specifically, the dynamic map portion 12a2 of environmental maps 12a is updated to register positions "PA2" and "PB2"/"PB3" of first and second surgical robotic cart assemblies 100a, 100b, respectively, as the respective current positions thereof. Next, the updated dynamic map portion 12a2 of environmental maps 12a is again incorporated or aligned with the static map portion 12a1 of environmental maps 12a to provide a representation of the current positions "PA2" and "PB2"/"PB3 within the boundaries of operating room "OR.

Following the confirmation of placement phase, in step S228, first and second surgical robotic cart assemblies 100a, 100b are configured to perform the respective specified tasks (e.g., medical procedure). It is contemplated that further adjustments may be made to the positions of first and second surgical robotic cart assemblies 100a, 100b as described in the method steps above with reference to <FIG>.

Turning now to <FIG>, a surgical robotic cart assembly <NUM> provided in accordance with another aspect of the present disclosure is shown. Similar to surgical robotic cart assembly <NUM>, surgical robotic cart assembly <NUM> generally includes a robotic arm <NUM>, a vertical column <NUM>, and a base portion <NUM>. Base portion <NUM> includes a plurality of casters <NUM>, <NUM>, and <NUM> coupled thereto.

Base portion <NUM> also includes a visual guidance system <NUM> and an on-board safety system <NUM>. Visual guidance system <NUM> is configured to direct clinician "C" as to where surgical robotic cart assembly <NUM> needs to be manually moved. In embodiments, visual guidance system <NUM> includes a projector <NUM> mounted on a gimbal <NUM> supported on a bottom or floor-facing surface 330a of base portion <NUM>. In embodiments, visual guidance system <NUM> also includes a display <NUM> and one or more light(s) <NUM> mounted on a top surface 330b thereof. Light(s) <NUM> may be spaced apart and disposed about the periphery of base portion <NUM>.

With additional reference to <FIG>, in conjunction with <FIG>, manual positioning means of a first surgical robotic cart assembly 300a and a second surgical robotic cart assembly 300b around surgical table "ST" is described. Similar to the automated positioning means described above with reference to <FIG>, the manual positioning means is configured to facilitate optimal positioning of robotic arm <NUM> of each of first and second surgical robotic cart assemblies 300a, 300b relative to each other and surgical table "ST" to complete a specified task.

In embodiments, projector <NUM> of each first and second surgical robotic cart assemblies 300a, 300b is configured to emit or project a pattern "A1" and "B1," respectively, onto the floor of the operating room "OR" which directs clinician "C" to move first and second surgical robotic cart assemblies 300a, 300b towards a target location "A2" and "B2," respectively. In embodiments, visual sensor 14a mounted to the ceiling of operating room "OR" may include a projector 14c configured to simultaneously project patterns "A1" and "B1," and target locations "A2" and "B2" for first and second surgical robotic cart assemblies 300a, 300b, respectively. Alternatively, projector 14c may instead be disposed within the operating room lights (not shown) above surgical table "ST. " It is contemplated that as clinician "C" moves first and second surgical robotic cart assemblies 300a, 300b towards target locations "A2" and "B2," respectively, patterns "A1" and "B1" are configured to change to provide updated directions until exact placement of first and second surgical robotic cart assemblies 300a, 300b is achieved. Upon reaching respective target locations "A2" and "B2," first and second surgical robotic cart assemblies 300a, 300b are configured to provide audible and/or visible indication that target locations "A2" and "B2" have been reached.

In embodiments, display <NUM> on base portion <NUM> is configured to display a visual indication <NUM> of the direction to move first and second surgical robotic cart assemblies 300a, 300b. Visual indication <NUM> of display <NUM> may include geometric indicia such as, for example, an arrow scaled according to the distance first and second surgical robotic cart assemblies 300a, 300b need to move in order to reach target locations "A2" and "B2," respectively. In embodiments, visual indication <NUM> of display <NUM> may include numeric indicia of the remaining distance to target locations "A2" and "B2," respectively. Display <NUM> is configured to continuously update the visual indication <NUM> until target locations "A2" and "B2" have been reached. In embodiments, light(s) <NUM> disposed about the periphery of base portion <NUM>, may be configured to selectively illuminate to provide indication to move first and second surgical robotic cart assemblies 300a, 300b in a certain direction.

Further, as shown in <FIG>, clinician "C" may be provided with an augmented reality display device "AR" configured to provide an enhanced view of the operating room "OR" including visual indication of where first and second surgical robotic cart assemblies 300a, 300b need to be moved as well as dynamically updating paths to reach target locations "A2" and "B2," respectively. Augmented reality display device "AR" may also be configured to provide indication of speed and the need to slow movement of first and second surgical robotic cart assemblies 300a, 300b in order to avoid collisions.

Safety system <NUM> is configured to operate in conjunction with visual guidance system <NUM> to prevent collisions between one or more of first and second surgical robotic cart assemblies 300a, 300b and surgical table "ST" as first and second surgical robotic cart assemblies 300a, 300b are moved by clinician "C. " In embodiments, safety system <NUM> is configured to selectively trigger a locking mechanism to apply brakes to one or more of the plurality of casters <NUM>, <NUM>, and <NUM> of base portion <NUM>. Safety system <NUM> is also configured to communicate with control device <NUM> (<FIG>) in instances where first and second surgical robotic cart assemblies 300a, 300b require troubleshooting.

Claim 1:
A method of placing a surgical robotic cart assembly (<NUM>), comprising:
determining a first position of a first surgical robotic cart assembly (100a) relative to a surgical table (ST);
calculating a path for the first surgical robotic cart assembly towards a second position of the first surgical robotic cart assembly relative to the surgical table, wherein in the second position, the first surgical robotic cart assembly is spaced-apart a first safe distance from the surgical table;
moving the first surgical robotic cart assembly autonomously towards the second position thereof; and
detecting a potential collision along the path of the first surgical robotic cart assembly as the first surgical robotic cart assembly moves towards the second position thereof, further comprising:
determining a first position of a second surgical robotic cart assembly (100b) relative to the first surgical robotic cart assembly (100a) and the surgical table (ST);
calculating a path for the second surgical robotic cart assembly towards a second position of the second surgical robotic cart assembly relative to the first surgical robotic cart assembly and the surgical table, wherein in the second position, the second surgical robotic cart assembly is spaced-apart a second safe distance from the first surgical robotic cart assembly and a third safe distance from the surgical table;
moving the second surgical robotic cart assembly autonomously towards the second position thereof; and
detecting a potential collision along the path of the second surgical robotic cart assembly as the second surgical robotic cart assembly moves towards the second position thereof; further comprising:
obtaining a first sensor data from a visual sensor (14a) to determine the first position of the first surgical robotic cart assembly and to determine the first position of the second surgical robotic cart assembly and characterized by further comprising:
obtaining a second sensor data from a floor sensor (14b) to determine the first position of the first surgical robotic cart assembly and to determine the first position of the second surgical robotic cart assembly.