Abstract: Provided is a traction device for curved balloon catheter, which is characterized by comprising: a catheter (5) with a handle (2) at one end, a locator (3) and a traction balloon (4) arranged outside the catheter (5), which one or more cavities are arranged in the catheter (5), the catheter part is provided with at least one hole, at least one cavity fills and discharges the traction balloon (4) with fluid through the hole, the traction balloon (4) bends to one side when filled with fluid, and the handle (2) can drive the catheter (5) and the traction balloon (4) to rotate, thus realizing a simple and reliable traction.

Abstract: Disclosed is a device, system and method for use with sensors including an accelerator, a gyroscope and magnetometers to determine position and orientation of a probe. The probe may be attached to, or incorporate other instruments such as ultrasound transducer and surgical instruments. Each of the sensors generate sensor data, including calibration data. The system may also have a second position sensor in proximity to the probe. The system also has a processing engine receiving the sensor data for calculating the position and orientation of the probe relative to the second position sensor.

Abstract: A system for aiding surgery on a patient is described including a display device and a storage device that stores an image of at least a portion of the anatomy of the patient, including one or more surgical navigation markers positioned on the patient, for display on the display device. An analyser is adapted to receive positional data of a probe based on positioning of the probe relative to the one or more markers on the patient. Based on the positional data, the analyser outputs correctional data to adjust an alignment of the image on the display device to match locations of said one or more markers.

Abstract: The present disclosure provides a head tracking control system including at least one marker positioned on a head of a surgeon. The system further includes an infrared camera including at least two infrared sensors and that detects infrared light reflected off the at least one marker and sends a signal corresponding to the detected light to a processor, and that executes instructions on the processor to detect a movement of the at least one marker. The system also includes an intelligent tracking system that executes instructions on the processor to determine if the detected movement of the at least one marker corresponds to a defined head movement of the surgeon. The system further includes an ophthalmic surgical microscope including the processor. If the detected movement of the at least one marker corresponds to the defined head movement of the surgeon, the processor executes instructions to control the ophthalmic surgical microscope.

Abstract: Methods and systems of computing parameter values of one or more model parameters are described. The model models structural and dielectric properties of a structure in a human or an animal body. An exemplary method includes: accessing voltage measurements made at different places in the vicinity of the structure by one or more in-body field sensing electrodes in response to currents applied to one or more field supplying electrodes; and computing the parameter values by adjusting the parameter values to fit predicted voltage values to the accessed voltage measurements, wherein the predicted voltage values are predicted from the model for the currents applied to the field supplying in-body electrodes.

Abstract: A method for verifying surgical tool placement includes attaching a guide sleeve to a surgical robot, the guide sleeve defining a guide sleeve axis; aligning the surgical robot such that the guide sleeve axis is directed at a predetermined target location; and attaching an aiming rod to the guide sleeve such that the aiming rod can rotate around the guide sleeve axis, the aiming rod having apertures along its length. The aiming rod is attached to the guide sleeve at an angle and position such that when the surgical robot is adjusted to align the guide sleeve axis with the predetermined target location, a center of each aperture of the apertures of the aiming rod and a center of the predetermined target location are collinear, independent of a rotational position of the aiming rod around the guide sleeve axis.

Abstract: The present invention relates to an electromagnetic navigation system for microscopic surgery and a method of microscopic surgery using said system. The present disclosure provides an electromagnetic navigation system for microscopic surgery, comprising at least a microscope and an electromagnetic measurement system comprising a field generator, wherein the field generator is adjustably connected to the microscope, and an additional disturbance correction module for compensating disturbances of the electromagnetic measurement system caused by the microscope. The electromagnetic measurement system may further comprise a sensor element configured to configured to detect a state of said adjustment element and to deduce a current orientation of said field generator relative to said microscope.

Abstract: A medical navigation system is provided for detecting movement of a subject, the system having an optical tracking system including a camera, a display, and a controller electrically coupled with the optical tracking system and the display. The controller has a processor coupled with a memory and is configured to receive a data signal from the optical tracking system and recognize and continuously monitor optical tracking markers on the subject within a field of view of the camera, and provide an alert on the display when movement of the optical tracking markers on the subject falls within predefined parameters.

Abstract: The application provides a device, method and system for registration. The registration device includes a fixing member; a frame connected to the fixing member, at least one trackable element mounted on the frame; and a collection device connected to the fixing member, wherein the collection device is configured to simultaneously collect multiple point data from an object to be registered. The registration method includes obtaining simultaneously, by a registration device, a point cloud data from a surface of a cartilage of an object to be registered; and performing surface fitting based on the point cloud data to obtain a fitted surface of the cartilage of the object to be registered. The registration system includes the registration device; a first point cloud data acquisition module, configured to receive the point cloud data from the collection device; and a surface fitting module, configured for surface fitting with the point cloud data.

Abstract: A method of using a robotic guidance system for performing surgery on a spine is provided. The method includes utilizing a computerized tomographic scan image of a location on a spinal column of a patient, such that the computerized tomographic scan image is connected to a computer and visible on a monitor connected to the computer. The method also includes attaching a coupling component to the spinal column of the patient, coupling a marker to the coupling component, and imaging, with a fluoroscope, the view of the spinal column of the patient, wherein the fluoroscope image is transmitted to the computer and visible on the monitor and the at marker is clearly visible in the fluoroscope image.

Abstract: A method of verifying torque measurements of a reaction torque transducer of an instrument drive unit includes a controller receiving a verification signal, generating an acceptable range of torques, receiving a torque signal, comparing the torque signal to the acceptable range of torques, and stopping a motor if the torque applied by the motor is outside of the acceptable range of torques. The verification signal is indicative of the current drawn by the motor and the torque signal is indicative of torque applied by the motor.

Abstract: A surgical system includes a surgical tool, a tracking system configured to obtain tracking data indicative of positions of the surgical tool relative to an anatomical feature, an indicator light configured to emit light, and a computer system programmed to control the indicator light to change a color of the light based on the tracking data.

Abstract: A system and method of breakaway clutching in a device includes an arm including a first joint and a control unit coupled to the arm. The control unit includes one or more processors. The control unit switches the first joint from a first state of the first joint to a second state of the first joint in response to an external stimulus applied to the arm exceeding a first threshold, wherein movement of the first joint is more restricted in the first state of the first joint than in the second state of the first joint, switches the first joint from the second state to the first state in response to a speed associated with the first joint falling below a speed threshold, and prevents the switching of the first joint from the first state to the second state when the arm is in a predetermined mode.

Abstract: Systems, methods, and tangibly-implemented software instructions for supporting a teleoperated surgical system (TSS). A surgical input that includes monitored events of the TSS, is received. A current stage of the surgical procedure is autonomously determined based on the surgical input. A call for surgeon assistance may be detected, in response to which context-relevant assistance may be provided to a surgeon console of the TSS, the context-relevant assistance being stage-synchronized with the surgical procedure.

Abstract: A guiding and support device, particularly for a robot for minimally-invasive surgery through a single parietal incision and/or natural orifice, includes mutually associated rigid bodies, and stiffening elements associated with the guiding and support device and adapted for the transition of the device from an inactive configuration, the rigid bodies can move with respect to each other, to an active configuration, in which the rigid bodies are mutually aligned so as to define a rigid guide, and vice versa. The device further includes elements for combined rotary and translational motion which are adapted, in the active configuration of the guiding and support device, to translate and/or to rotate a robot.

Abstract: A multicatheter subsystem is provided for a steerable catheter robotic system. The subsystem includes a flexible output sheath, a plurality of flexible multi-lumen assemblies and a plurality of robotic instruments for performing a surgical procedure. The plurality of flexible multi-lumen assemblies extends through the outer sheath. Each of the multi-lumen assemblies has a proximal end and a distal end. Each of the robotic instruments is operatively and removably attachable to the distal end of one of the multi-lumen assemblies such that each instrument is teleoperable independently of every other robotic instrument. At least a first of the robotic instruments includes a plurality of interconnected articulating segments. Each of the articulating segments is operatively and removably attachable to a different one of the multi-lumen assemblies.

Abstract: Provided are a bending structure and a flexible tube for a medical manipulator, which comprise a corrugated tube portion having a corrugated portion in which crests and troughs are alternately arranged in the axial direction and being bendable according to expansion and contraction of the crests and the troughs, and insertion holes provided on the corrugated portion to pass the drive wires in the axial direction.

Abstract: The present invention provides a surgical robot system and a surgical instrument thereof, which can measure a contact force acting on a terminal end of the surgical instrument with enhance precision and accuracy. The surgical instrument includes a mechanical structure, a sleeve and a force sensor. The mechanical structure includes a shaft and an end effector connected to a terminal end of the shaft. The sleeve fixedly or detachably sleeves over the terminal end of the shaft. The force sensor includes a sensitive element and a peripheral measurement module connected thereto. The sensitive element is arranged on the sleeve and configured to acquire strain information of the sleeve.

Abstract: The tissue removal containment system is provided that includes a tissue removal and/or containment bag arranged to be inserted through an opening into a confined space. The bag has a support or ring having a compressed, partially compressed and/or uncompressed state or position. The bag can also include an enclosure or film defining the enclosure connected to the support with the enclosure having a confined state and a deployed or unconfined state.

Abstract: A system for containing and transporting a medical device may include a container including a bottom face and surrounding side faces as a closed first end and an open second end to form an inner portion for receiving and retaining the medical device. The liner may be extendable over the side faces to line the inner portion of the container to an outer surface of the bottom face of the container. The liner may act as a protective barrier to the container to minimize contamination when receiving and/or retaining a used medical device. First and second covers may be removably attachable to the container, over the liner, to enclose a medical device therebetween. A first cover may have a color or marking indicating the medical device is “clean”, while a second cover may have a color or marking indicating the medical device is “used”.

Abstract: A system for containing and transporting a medical device may include a container including a bottom face and surrounding side faces as a closed first end and an open second end to form an inner portion for receiving and retaining the medical device. At least a portion of one or more of the side faces may have an indentation extending along a length of the respective side face. A liner and cover may be removably enclosable about the container. The liner may be extendable over the side faces to line the inner portion of the container. The cover may enclose the medical device in the container between the liner and cover. The indentation may be formed into the inner portion of the container. The container may be compatibly receivable in a first transportation device in a first orientation.

Abstract: A system comprising: a fluid supply configured for the delivery of a fluid; a hollow body in fluid-communication with the fluid supply, the hollow body configured to be disposed between a first biological surface and a second biological surface; and a mechanism configured to control delivery of fluid from the fluid supply and through the hollow body to create separation between the first biological surface and the second biological surface.

Abstract: The present invention relates to a system for evaluating the evolution of the structure of a bone of a subject, said system comprising an implantable medical device comprising a distraction body and at least one reflector coupled to the distraction body, said distraction body being configured to distract osteotomically separated bone section bodies and comprising a first block for implantation and attachment to a first bone section, a second block for implantation and attachment to a second bone section separated from the first bone section by an osteotomy, an actuator configured to adjust the space between the first block and the second block when activated, enabling distraction between the first bone section and the second bone section, wherein said at least one reflector is configured to reflect an electromagnetic signal and is embedded in a surrounding tissue of the subject when the distraction body is attached to the bone of the subject, a calculation module configured to compute a parameter representati

Abstract: A robotic medical system can include a patient platform configured to support a patient during a robotic medical procedure, a column supporting the patient platform, and an arm support coupled to the column with at least one robotic arm coupled to the arm support. The system can also include an indicator positioned on at least one of the arm support and the patient platform, wherein the indicator is configured to indicate state or identity information of the system. The indicator can be a visual indicator.

Abstract: The subject invention provides devices and methods for alleviating discomfort associated with neuroma formation. The devices and methods of the invention effectively use the body's natural response of reconstructing implanted biomaterials to minimize the size of, isolate, and protect a neuroma. In preferred embodiments, the subject device is a cylindrical cap, wherein the internal chamber of the cylindrical cap physically partitions the nerve to enable an arrangement of nerve fibers (as opposed to haphazardly arranged nerve fibers often produced in neuromas). Tabs arranged on the outside of the cap can be used to manipulate the cap into place on a nerve. The open end can also be configured with flaps that can be used to widen the open end for easier insertion of the nerve into the cap. In addition, the cap's material remodels into a tissue cushion after implantation, which protects the neuroma from being stimulated and inducing pain.

Abstract: A system for positioning a conduit within an ophthalmic surgical field comprises a conduit (12), a first fixation point (14) and a second fixation point (15). The first fixation point (14) comprises base structure (16) arranged to be secured in a fixed location, and a grip arrangement (18) configured to hold the conduit (12). The grip arrangement (18) is mounted on the base structure (16) by way of a ball joint structure (20, 22), with the ball joint structure (20, 22) being arranged to allow pivoting and rotational movement of the grip arrangement (18) with respect to the base structure (16). The second fixation point (15) is positioned remote from the first fixation point (14) at a predefined distance therefrom. A method for positioning a conduit with an ophthalmic surgical field is also described.

Abstract: An imaging system, including a head-mounted display worn by a system operator. A marker defines a plane when attached to a human subject. Optically reflective elements are disposed on the marker and on opposing sides of the plane in a non-symmetrical arrangement with respect to the plane. A memory stores a graphical representation of a tool used in a procedure performed on the human subject, and an image of anatomy of the human subject. A camera attached to the display acquires an image of the marker and the tool. A processor analyzes the image to identify the plane and to identify a side of the plane wherein the camera is located, and to render to the display the image of the anatomy of the human subject with the graphical representation of the tool superimposed thereon from a point of view in the identified side of the plane.

Abstract: A shape sensing apparatus for tissue and surgical procedures comprising a processing means and a tunable light source. At least one shape sensing fiber can be used with the shape sensing fiber having a plurality of individual sensing fiber cores having a fiber Bragg grating distributed within the fiber. An optical switch configured to sequentially switch between a multiplex of individual fibers inside the shape sensing fiber for signal detection can be included and a detector can be used to detect the fiber signals. An augmented reality system that receives the tracking data from the shape sensing apparatus, and superimposes visual guidance on its display for precise and intuitive surgical guidance.

Abstract: A device, system, and method for printing a vein map onto a patient's skin may include a probe and a printer. The probe may be configured to identify a location of a target vein beneath the patient's skin. The printer may be configured to receive the location and, using the location, print the vein map onto the patient's skin to indicate the location. The vein map may comprise antimicrobial ink printed onto the patient's skin with one or more colors and/or one or more patterns. The vein map may be a two-dimensional vein map or a three-dimensional vein map that indicates the location of the target vein within the patient, a width of the target vein, and/or a depth of the target vein within the patient.

Abstract: A medical system includes a marking device inserted into a body cavity, the marking device having an applicator configured to transmit energy so as to perform marking on target tissues; and a controller comprises at least a processor and configured to control the marking device, wherein the applicator has a plurality of application elements which individually applies energy; and wherein the controller is configured to set a marking region on the target tissues in the body cavity; and selectively control the application elements among the plurality of application elements corresponding to the marking region to apply the energy.

Abstract: In an indwelling device including a device body and an engaging part connected to the device body and capable of abutting on a bodily wall, the engaging part can abut on the bodily wall in a state that a region of the engaging part, excluding end parts, is expanded radially outward from an outer peripheral surface of the device body.

Abstract: An examination marker is used in diagnostic imaging using microwaves, including a marker body to be adhered to a site to be examined. The marker body is configured to display an index used for scanning of the site to be examined and to deform in accordance with a shape of the site to be examined, and the marker body has a transmittance of 70% or higher to microwaves at a frequency of 2 GHz.

Abstract: Embodiments disclose a disposable protective assembly apparatus for a dental syringe body of a dental syringe. The apparatus is a combination of a disposable syringe tip and a disposable protective sleeve, the sleeve being pre-attached to the syringe tip, and the sleeve being in a pre-folded position to be quickly and easily slid over the dental syringe prior to a dental operation.

Abstract: When the compressed air is not applied, an inclined surface, which is positioned at an upstream side with respect to the supply direction of the compressed air, of the lip part is in contact with the inclined surface of the inner ring. When the compressed air is applied, a contact area between the inclined surface, which is positioned at the upstream side with respect to the supply direction of the compressed air, of the lip part and the inclined surface of the inner ring becomes smaller, as compared to when the compressed air is not applied.

Abstract: The invention relates to a mixing capsule (1) comprising a first chamber (2) to receive a composition A and a second chamber (3) to receive a composition B, characterised in that the first chamber (2) and the second chamber (3) are arranged rotatably about the longitudinal axis (5) of the mixing capsule (1), the first chamber (2) comprising a first opening (25), the second chamber (3) comprising a second opening (26), the first opening (25) and the second opening (26) being arranged perpendicularly to the longitudinal axis (5) and plan-parallelly to each other and/or perpendicularly spaced, the first opening (25) and the second opening (26) being arranged incongruently to each other in a storage position (4), the first opening (25) and the second opening (26) being arranged congruently to each other in a handling position (6). Furthermore, the invention relates to a method for mixing at least two compositions A and B to a composition C in a mixing capsule and to a use of the mixing capsule.

Abstract: The invention relates to a mixing capsule (1) comprising a housing in the form of a cylinder, characterised in that the mixing capsule has an applicator (2) at the top surface (15) of the cylinder and an auxiliary capsule (3) at the base surface of the cylinder being mounted displaceably in the direction of the longitudinal axis, the auxiliary capsule (3) being mounted displaceably in the direction of the longitudinal axis in a cylindrical inside pipe (4) and/or a mounting of the mixing capsule (1), the housing of the mixing capsule comprising an outer housing sleeve (5) and an inner housing sleeve (6) being mounted rotatably against each other and displaceably into each other, the auxiliary capsule (3) and the cylindrical inside pipe (4) and/or the mounting taking a first partial volume of the internal volume (9) of the mixing capsule (1) in a first position of the inner housing sleeve (6), the mixing capsule (1) having a second partial volume of the internal volume (9) being independent from the auxiliary c

Abstract: The invention discloses an improved dental dam (10) for use in dental restoration processes. The dam (10) includes a substantially planar membrane (12), having location portions (14) disposed on the membrane (12) and a guide formation (16) which runs along a major surface of the membrane (12). Additionally the dam (10) includes a clamp arrangement (20), which is engageable with and slidably movable along the guide formation (16). Both the membrane (12) and the clamp arrangement (20) are formed of a shape memory polymer.

Abstract: A method for analyzing a real dental situation of a patient. The method includes steps, as follows, in succession. At an updated instant, acquisition of an updated image representing a real dental scene as observed by an operator. Simulation, for a simulation instant, of the real dental scene represented on the updated image, then determination of a virtual dental scene as a function of the simulation. Presentation of the virtual dental scene in transparent mode and overlaid on the real dental scene, or display of the updated image on a screen and presentation of the virtual dental scene overlaid with the representation of the real dental scene on the updated image displayed on the screen, in transparent mode or not on the representation.

Abstract: Provided herein are systems and methods for optimizing a 3D model of an individual's teeth. A 3D dental model may be reconstructed from 3D parameters. A differentiable renderer may be used to derive a 2D rendering of the individual's dentition. 2D image(s) of an individual's dentition may be obtained, and features may be extracted from the 2D image(s). Image loss between the 2D rendering and the 2D image(s) can be derived, and back-propagation from the image loss can be used to calculate gradients of the loss to optimize the 3D parameters. A machine learning model can also be trained to predict a 3D dental model from 2D images of an individual's dentition.

Abstract: A tool for seating dental aligners is disclosed. The tool includes a longitudinally extending body that includes a handle positioned proximate a distal end of the body. A claw portion defined by a facial finger and a bite finger extends towards a proximal end of the body. The facial finger is adapted to transfer force applied using the handle portion to a facial surface of a dental aligner positioned along one of the upper teeth and the lower teeth of a user. The bite finger is adapted for compression between the mandible and maxilla of the user for applying force to an incisal-occlusal surface of the dental aligner. The bite finger and the facial finger are shaped and positioned relative to one another to allow concurrent application of force to the dental aligner for seating the dental aligner on the upper or the lower teeth of the user.

Abstract: The orthodontic traction device includes a base member having an attachment face on a back side, a column member joined to a front side of the base member, and a hook member. The column member includes a knee section whose first end is connected to the front side of the base member, and a linear section connected to and extended from a second end of the knee section. The base member is adhered to a front side of a crooked tooth. As the linear section provides a distance between the hook member and the base member, the force exerted by an elastic element is applied as a torque using the linear section as a lever. The tooth is as such turned toward a desired orientation. An arch wire running through the base member and may pull the tooth to move up or down perpendicularly.

Abstract: Systems and methods of repositioning teeth, using one or more appliances for installing on a patient's teeth are described. The appliance includes an arch shaped member; a plurality of spring members coupled to or provided on the arch shaped member; and a plurality of securing members for securing to a corresponding plurality of the patient's teeth on a one-to-one basis, the securing members being supported by the arch shaped member. The arch shaped member and the plurality of springs, together, comprise a two dimensional structure having a length dimension and a width dimension with varying widths along the length dimension, that is bent into a three dimensional structure.

Abstract: An orthodontic bite corrector for moving the relative positions of an upper dental arch and a lower dental arch, the orthodontic bite corrector comprising a post extending from a first support, the first support for connection to the first dental arch; a hub extending from a second support, the second support for connection to the second dental arch, and a ramp extending from the hub, the ramp including an occlusal end and a gingival end, where the hub is adjustable between a first fixed hub position and a second fixed hub position, and where the post is configured to slide along the ramp from the occlusal end to the gingival end when the upper dental arch and the lower dental arch are closed and methods of using such orthodontic bite corrector.

Abstract: A bone-bonded artificial tooth structure for fixing to a patient's partially atrophied and gum covered alveolar bone includes a base portion having opposed lower and upper connecting sections located below and above a peak of the atrophied alveolar bone, respectively, the lower connecting section being in contact with the atrophied alveolar bone, and one side of the upper connecting section opposed to the atrophied alveolar bone defining a connecting surface; a tooth portion fixed to the connecting surface; and a dental anchor having an anchoring section inserted into the atrophied alveolar bone and another anchoring section inserted in the base portion to restrict the base portion from displacing relative to the alveolar bone. The bone-bonded artificial tooth structure fixed to the alveolar bone can immediately provide good supporting strength for chewing food without needing to wait for a long time for the osseointegration of the bone with the base portion.

Abstract: A dental implant includes: a base having exterior surfaces and a plug opening formed therein; a plug assembly inserted into the plug opening; and at least one region of porous ingrowth material associated with at least one of the exterior surfaces of the base.

Abstract: The invention relates to a dual fixation system for dental implant prosthesis consisting of: an intermediate abutment assembly for fixation on the implant, clip fixation device, fixation screw and cylinder that allows the prosthesis to be screwed or retained by clip as appropriate, individually or independently for each implant. This system facilitates both the immediate loading technique and the execution of the definitive prosthesis made on an intermediate abutment, since retention by clip is very advantageous in the case of implants with unfavorable emergencies, joining them to the structure as abutments and without compromising the esthetics of the case.

Abstract: A scanning system is described herein which incorporates projecting a plurality of patterns onto an object of interest and capturing the reflected image. Each pattern is based at least in part on traversing a hypercube graph or a Fibonacci cube graph using a Hamiltonian path. The patterns are used to help define the three-dimensional shape of the underlying object of interest, while also providing more robust error-correcting properties. After the reflected image of the projected pattern is captured, the scanning system further processes and displays a three-dimensional model of the captured object of interest.

Abstract: Systems and methods are disclosed for processing and storing acquired data relating to one or more dental conditions. The methods can include acquiring a first oral feature in a first data acquisition using a data acquisition device, determining a first oral feature first reference point from the first data acquisition, diagnosing a first dental condition upon confirming that the first oral feature first reference point is associated with the first dental condition, acquiring the first oral feature in a second data acquisition using the data acquisition device, determining a first oral feature second reference point from the second data acquisition, and tracking the progression of the first dental condition by determining a discrepancy between the first oral feature first and second reference points.

Abstract: The invention relates to an intraoral scanning device for digitally recording the position of a dental implant by means of a scanner. The device is in the form of a scanning body or pillar used to transfer virtually to CAD software the position and orientation of a dental implant or similar element, mainly by mounting the scanning body or pillar directly on the dental implant located in the mouth of the patient in a clinic and scanning the implant with an intraoral scanner. It is also possible to use the intraoral scanning pillar system in a laboratory and with a conventional desktop scanner.

Abstract: A composite polishing strand has a polishing strip for polishing a dental restoration, such as a filling, and may incorporate a floss leader coupled to a polishing strip. The floss leader may be snapped down between teeth and the polishing strip may then be pulled into the interproximal contact area for polishing a dental restoration. A composite polishing strip may also include a threader having an insert end that can be inserted into an interproximal contact area, such as an interproximal subjacent contact area, and pushed through to the opposing side. The threader may then be pulled to locate the polishing strip in the interproximal contact area for polishing the dental restoration. The composite polishing strip having both a threader and floss leader enables two different methods of locating the polishing strip in the interproximal contact area and therefore is very versatile.