Abstract: A medical appliance for the treatment of one or more sleep disorders such as obstructive sleep apnea in a patient, the appliance comprising: a biasing member for inserting behind and exerting a force upon the patient's soft palate or tongue, wherein the biasing member is inserted in a reduced or minimized form and then expanded or firms once in place to exert the force. The appliance may be nasally inserted or be placed through the mouth. In a particular configuration, both the soft palate and tongue are biased to prevent obstruction of the flow of air in the nasopharyngeal airway.

Abstract: An anti-snoring appliance that repositions the tongue and mandible, reducing and/or eliminating snoring and sleep apnea, has two primary points of contact with the tongue. The appliance depresses, lifts, and secures the tongue and repositions the mandible at the same time. This movement of both the tongue and the mandible improves airflow while the user sleeps.

Abstract: An intraoral stimulation device configured to be positioned in a mouth of a patient. The device includes a sensor and one or more electrodes. The sensor is configured to monitor a position of the tongue and/or force exerted by the tongue against the sensor and to transmit a signal encoding tongue information. The electrode(s) is/are configured to deliver electrical stimuli to the patient's hard palate when the tongue information indicates that the tongue has moved from a desired position to an undesired position in the mouth. The electrical stimuli causes the tongue to move from the undesired position to the desired position.

Abstract: A decline in viscosity of a first lubricant due to perspiration, pressure of insertion, thrusting, and the like during coitus is prevented and, a high adherence with a penis is obtained. In a condom, lubricants are added to a condom main body, wherein the lubricants include a first lubricant and a second lubricant, the first lubricant is made of a silicone oil having a higher viscosity than a viscosity of the second lubricant and is provided on an inner peripheral surface of at least a tip part of the condom main body, and the second lubricant is provided on an outer peripheral surface of at least the tip part of the condom main body.

Abstract: A thermal control unit includes a supply circuit, a return circuit, a fluid channel, a drain coupled to the fluid channel, and at least one hose circuit connecting the supply circuit and the return circuit. A supply valve may be coupled to the supply circuit and a return valve may be coupled to the return circuit. When the drain is opened, the return valve can open to allow ambient air to enter the return column and to create a siphon to drain the fluid in the thermal control unit. The supply valve can open after the return valve and allow ambient air to enter the supply circuit. The supply valve may allow less air to enter the thermal control unit than the return valve to preserve the siphon through the draining process.

Abstract: Described herein include a system and method for a device for drug delivery and ophthalmic diagnostics designed to assist in the diagnosis of the physical state of a cornea through the projection of droplets onto the eye. In some embodiments, the apparatus includes a liquid sampling unit, an electric droplet generator, and a steering unit. In some embodiments, the liquid sampling unit is configured to project a quantity of liquid, while the electric droplet generator receives the quantity of liquid and outputs one or more electrically charged droplets. The steering unit uses electrostatic forces to steer the electrically charged droplets along a trajectory onto the cornea of the patient's eye.

Abstract: A cartridge-based device for providing a spritz of medication to a user's eyeball, the device supporting a sealed cartridge comprising at least two metered doses of medication wherein a moveable plug inside the device is actuated to force the medication through an ejection nozzle of the cartridge in the form of a spritz.

Abstract: A tool may include a forceps tip including: a tip body having a proximal longitudinal end, a distal longitudinal end, and a contact surface therebetween, wherein the contact surface includes: a first convex lobe proximate the proximal longitudinal end and a second convex lobe adjacent to the first convex lobe in a distal longitudinal direction.

Abstract: A system includes an actuator, one or more items of diagnostic equipment configured to perform ophthalmic measurement, and one or more items of treatment equipment configured to facilitate performance of an ophthalmic treatment with respect to an eye of a patient. A controller is coupled to the actuator and is configured to cause the actuator to transfer the one or more items of diagnostic equipment and the one or more items of treatment equipment into and out of a region in front of an eye of the patient. The ophthalmic treatment may be a LASIK or SMILE treatment using refractive error and/or eye geometry measured using the diagnostic equipment.

Abstract: A system for performing ophthalmic treatments includes a handpiece configured to be held by a hand of a surgeon. An end effector is mounted to the handpiece and configured to manipulate tissue of a patient, such tissues of the eye when performing an ophthalmic treatment. The system includes a motion sensor configured to sense movement of the handpiece and one or more stabilizing actuators configured to stabilize movement of the handpiece in response to movement of the hand of the surgeon. A controller is coupled to the motion sensor and the one or more stabilizing actuators and is configured to instruct the one or more stabilizing actuators to compensate for motion detected by the motion sensor. The controller may include a high-pass filer with the output of the high-pass filter used to control the stabilizing actuators. The parameters of the high pass filter may be adjusted throughout an ophthalmic treatment.

Abstract: In certain embodiments, a surgical handpiece system includes a phacoemulsification tip, a fluid management system, an ultrasonic drive system, and a controller. The phacoemulsification tip is attached to a shaft. The fluid management system is configured to manage inflow and outflow of fluid from an ocular surgical site. The ultrasonic drive system is configured to generate torsional and longitudinal vibrations in the phacoemulsification tip. The controller is configured to analyze applied voltage and current to the ultrasonic drive system using Fast Fourier Transforms (FFTs), and tune applied frequencies of the torsional and longitudinal vibrations according to at least one resonant frequency.

Abstract: A console of an ophthalmic surgical system is for operating a surgical handpiece which includes a treatment needle and a drive for driving the treatment needle by oscillation. The console includes a generator configured to provide a time-varying drive signal for the drive, an evaluation unit, and a detection unit. The detection unit is electrically couplable to the drive and detects a contact signal of the drive on account of a second oscillation amplitude in a low-oscillation state of the needle in which the needle oscillates at a maximum first oscillation amplitude. The generator provides the drive signal such that the drive is deactivated during the low-oscillation state. The evaluation unit evaluates the contact signal and determines contact of a particle with the needle on a basis of the evaluation. The detection unit detects the contact signal when the second oscillation amplitude is greater than the first oscillation amplitude.

Abstract: Provided is an ophthalmic surgery instrument that allows an instrument suitable for excising a trabecular meshwork to be configured and allows a grip portion to be used for both first ophthalmic surgery such as trabeculectomy and second ophthalmic surgery. A first passage and a second passage for performing suction or supply of a perfusate are formed in a grip portion of an ophthalmic surgery instrument. An internal thread portion is formed at a tip end of the grip portion. A tip end member for first ophthalmic surgery has a single passage therein, and has a bent-shaped blade portion and an opening of the passage at a tip end thereof. The tip end member for first ophthalmic surgery and a tip end member for second ophthalmic surgery are selectively screwable to the internal thread portion.

Abstract: An ocular implant for draining aqueous humour from an anterior chamber of the eye for the treatment of glaucoma has a plate and a drainage tube extending from the plate. The drainage tube has a distal end forming an inlet and a proximal end forming an outlet, the outlet fluidly interfacing the plate. The drainage tube defines a side drainage outlet between the inlet and the outlet and wherein the side drainage outlet is positioned closer to the outlet than the inlet so that when the plate is implanted within subconjunctival space, the side drainage outlet locates within the subconjunctival space so that aqueous humour can drain both from the outlet and the side drainage outlet within the subconjunctival space.

Abstract: A system and method for corneal cross-linking with real-time monitoring are provided. The method comprises determining a plurality of measurement locations in a region of a cornea, and applying a corneal cross-linking treatment to the region of the cornea. During the application of the corneal cross-linking treatment, the method also comprises acquiring a temporal OCT interferogram at each OCT measurement location, generating temporal complex OCT data based on the temporal OCT interferogram, determining biomechanical data based on the temporal complex OCT data, and adjusting the corneal cross-linking treatment based on the biomechanical data.

Abstract: An example system for corneal treatment includes an illumination system to generate cross-linking in at least one selected region of a cornea treated with a cross-linking agent by delivering photoactivating light according to photoactivation parameters. The system includes a controller to receive input relating to treatment parameters, which include the photoactivation parameters. The controller is configured to output information for adjusting the one or more treatment parameters by (A) determining from the input, a distribution of cross-links for at least one selected region of the cornea; and (B) determining, from the distribution of cross-links, a shape change for the cornea. Responsive to the output from the controller, the illumination system is configured to adjust at least one of the one or more photoactivation parameters and determine a shape change according to a biomechanical model, and at least one of a biochemical model or an optical mode.

Abstract: A system for altering the eye color of a patient with a color alteration procedure includes a laser system having a housing around at least one component of the laser system. The laser system also has a perimeter circuit configured to detect a breach of the housing based on the perimeter circuit being broken resulting in an electrical current flowing through the perimeter circuit being ceased or a change in resistance in the perimeter circuit. The system also includes software that detects, by the perimeter circuit, the breach based on the perimeter circuit being broken. The software also executes, based on the breach, an electronic lockout of the laser system such that the laser system cannot be operated without receipt of a command lifting the electronic lockout.

Abstract: The present invention predicts prior to a laser iris color-change procedure what a patient's iris color will be after the procedure. The present invention does so by identifying and measuring a variety of anatomical features of the patient's eye that affect or are otherwise relevant to predicting the patient's post-operative iris color, translating these measurements into a post-operative iris color prediction, and communicating this prediction to the patient in a manner sufficient to manage the patient's expectations with respect to the aesthetic outcome of the procedure.

Abstract: Rather than rely solely upon pupillary occlusion or tracking of eye movement to protect the fundus from accidental exposure to electromagnetic radiation, the present invention also utilizes an electromagnetic radiation pathway with a profile such that the energy density at the iris is greater than the energy density at the posterior portion of the eye. This disparity in energy density allows for efficacy at the anterior iris treatment site, without injury to the fundus.

Abstract: A system includes an actuator, one or more items of diagnostic equipment configured to perform ophthalmic measurement, and one or more items of treatment equipment configured to facilitate performance of an ophthalmic treatment with respect to an eye of a patient. A controller is coupled to the actuator and is configured to cause the actuator to transfer the one or more items of diagnostic equipment and the one or more items of treatment equipment into and out of a region in front of an eye of the patient. The ophthalmic treatment may be a LASIK or SMILE treatment using refractive error and/or eye geometry measured using the diagnostic equipment.

Abstract: The invention relates to a treatment apparatus (10) and to a method for providing control data for an ophthalmological laser (12) of a treatment apparatus (10). The method incudes capturing (S10) at least one eye picture of an eye (16) by a camera device (28); ascertaining (S12) phenomenological structures (24) of the eye (16) from the eye picture by a computing device (18), wherein the computing device (18) determines the phenomenological structures (24) by an image analysis algorithm; ascertaining (S14) treatment positions (26) in the eye for the treatment with the ophthalmological laser (12) depending on the phenomenological structures (24) by the computing device (18); and providing (S16) control data for the treatment apparatus (10) by the computing device (18), which includes the treatment positions (26) in the eye (16) for the treatment.

Abstract: Disclosed herein is a method of performing ophthalmic surgery. The surgery includes positioning a patient interface relative to a patient's eye with the patient interface at least partially defining an interface chamber with the patient's eye. The interface chamber is filled with an immersion fluid. A fluid in an anterior chamber of the patient's eye is replaced with the immersion fluid, wherein the immersion fluid matches the refractive index of the cornea. A laser system is positioned relative to the patient interface. The laser system includes a laser source configured to generate a femtosecond laser beam and an optical delivery and scanner system in communication with the laser source to direct 3D scanned and focused laser beams through the patient interface and into the patient's eye.

Abstract: A system, technique and material composition for use in correction of eye condition are disclosed. The system comprising a processing utility and an etching utility. The processing utility comprises: correction pattern module configured for providing a selected two-dimensional pattern in according with input data indicative of vision impermanent of a user, and for generating operational instructions for forming said selected two-dimensional pattern on the surface of the cornea by said etching utility. The etching utility is configured to etching the selected patter on surface of the cornea of a user. The material composition comprises aqueous solution comprising a plurality of nanoparticles, said nanoparticles comprising maghemite nanoparticles wrapped by biocompatible protein chains. The material composition may be used as eye drops thereby allowing the nanoparticles to occupy etched region on the cornea, thereby maintaining correction of eye condition.

Abstract: An ophthalmic surgical laser system and method for forming a lenticule in a subject's eye using “fast-scan-slow-sweep” scanning scheme. A high frequency scanner forms a fast scan line, which is placed tangential to a parallel of latitude of the surface of the lenticule and then then moved in a slow sweep trajectory along a meridian of longitude of the surface of the lenticule in one sweep. Multiple sweeps are performed along different meridians to form the entire lenticule surface, with the orientation of the scan line rotated between successive sweeps. To generate tissue bridge free incisions without leaving laser-induced marks in the eye, a laser pulse energy between 40 nJ to 70 nJ is used, and the sweeping speed is controlled such that the scan line step (the distance between the centers of consecutive scan lines) is between 1.7 ?m and 2.3 ?m.

Abstract: In a femtosecond laser eye surgery system where beam delivery is accomplished with a moving objective, a dual-channel imaging system allows real-time procedure visualization before and during incision. The first (docking) imaging channel covers a full field of view (FoV) of the eye, e.g., 13 mm; the second (cutting) imaging channel is through the objective and moves with it, and covers a smaller FoV, e.g., 2 mm. During eye docking and undocking, the objective is moved to a parking position out of the visual field of the docking imaging channel, and the latter operates to provide process visualization. During incision, a composite eye image is displayed, composed of a stationary image captured by the docking imaging channel before treatment began overlayed with live cutting images captured by the cutting imaging channel. The live cutting images are compared to the stationary image in real time to detect eye movement.

Abstract: The present disclosure relates to darkening filters 10, 10? which are suitable for selectively darkening an optically transmissive window 20 for protection from light, in particular from high intensity light. The darkening filter 10, 10? is mounted in a forward-facing optically transmissive window 20 and comprises a non-uniform pattern 30 of switchable shutters 32 capable of being switching to at least a dark state and a light state by a shutter control system 40. The present disclosure also relates to a method of operating such darkening filters 10, 10?. The present disclosure furthermore relates to vision-protective 10 headgears 100, 100?, welding shields 110 and panes 120 comprising the darkening filters 10, 10? according to the present disclosure.

Abstract: An earmuff includes a first earmuff ring configured to sit against a user's head about a user's ear and a first earmuff cap including an opening and including a noise reduction member being movable relative to the earmuff ring between a first position entirely covering the opening and a second position at least partially exposing the opening, the earmuff cap having a first noise reduction rating in the first position and a second noise reduction rating in the second position that is different than the first noise reduction rating.

Abstract: The invention relates to a wound cover system with at least one wound cover comprising a multitude of sensors which are spaced apart and configured to measure at least one wound parameter.

Abstract: An elastic bandage includes: a body including a wide portion and a narrow portion, where the wide portion is connected to the narrow portion along an X-axis direction, and along a Y-axis direction perpendicular to the X-axis direction, a width of the wide portion is greater than a width of the narrow portion; a first fixing portion disposed on the wide portion of the body; and a second fixing portion disposed on the narrow portion of the body; where the first fixing portion and the second fixing portion are respectively located at two opposite ends of the body along the X-axis direction.

Abstract: Compression pants for lipedema include a lower waist portion, a hip portion, a right thigh portion and a left thigh portion. The hip portion is positioned below and depends from the lower waist portion. The hip portion is larger than the lower waist portion. The right thigh portion and the left thigh portion are positioned below and depend from the lower waist portion. Each of the right thigh portion and the left thigh portion have an upper part and a lower part. The upper part is larger in diameter than the lower part and the upper part tapers in size into the lower part.

Abstract: A nasal liquid absorption device to be disposed at least partially within a nose of a user, the nasal liquid absorption device including an attachment body to removably connect to the nose of the user, such that the attachment body is at least partially deformable to conform to a shape of the nose of the user, a plurality of absorption pads to absorb a fluid discharge within the nose, the plurality of absorption pads including a first of the plurality of absorption pads disposed at a first end of the attachment body, and a second of the plurality of absorption disposed at a second end of the attachment body opposite with respect to the first end, and a nasal decongestant disposed on or within at least a portion of each of the plurality of absorption pads to may alleviate or prevent a fluid discharge within the nose.

Abstract: Disclosed herein are multilayer absorbent cores, as well as personal care absorbent articles comprising the multilayer absorbent cores. The multilayer absorbent cores can comprise three or more layers including an intake layer and an absorbent layer. By employing a multilayer structure that includes a relatively low basis weight intake layer and a relatively high basis weight absorbent layer (and thus with a relatively large difference between the basis weight of the intake layer and the basis weight of the absorbent layer), fluid contacting the multilayer absorbent core can be rapidly directed through the intake layer to the absorbent layer. Consequently, articles incorporating these multilayer absorbent cores can exhibit improved intake properties, improved rewet performance, improved saturation and retention capacity, and/or improved desorption.

Abstract: A diaper device with methane sensor is provided. The device is comprised of a diaper with an integrated methane gas sensor. The sensor has a threshold level for methane gas that is preferably reached when an infant defecates in the diaper. Once the threshold is met or exceeded, the sensor communicates with a mobile application via a transmitter to produce a notification on the smart device the application is installed on. As a result, a user is alerted that the infant's diaper needs changed via their smart device.

Abstract: A system for manufacturing elastic strand nonwoven panels including an unwind module, a lamination module and a folding module. Elastic strand material is fed from cores disposed on the unwind module through rollers towards the lamination module, where the elastic strand material is attached to a nonwoven web to form an elastic strand nonwoven web. At the folding module, the elastic strand nonwoven web is folded over itself by operation of plates underneath which the elastic strand nonwoven web is fed under tension.

Abstract: The present disclosure discloses a diaper-based anomaly analysis and prewarning method, an electronic tag component, a diaper, and a monitoring device. Multi-algorithm analysis can be performed according to a first radio frequency signal sent by a first radio frequency electronic tag, a detected result from a human perception unit, and/or a second radio frequency signal sent by a second radio frequency electronic tag, so that an abnormal state of the liquid during the use of a diaper is accurately analyzed and prewarned, the inertial research and development thought of the skilled in the art continuing a research and development path in a physical direction of the diaper itself is broken, and a research and development path and a technical solution which are environment-friendly, safe in use, convenient to operate, controllable in cost and accurate in anomaly prewarning are successfully and non-obviously applied.

Abstract: The present disclosure discloses a diaper-based anomaly analysis and prewarning method, an electronic tag component, a diaper, and a monitoring device. Multi-algorithm analysis can be performed according to a first radio frequency signal sent by a first radio frequency electronic tag, a detected result from a human perception unit, and/or a second radio frequency signal sent by a second radio frequency electronic tag, so that an abnormal state of the liquid during the use of a diaper is accurately analyzed and prewarned, the inertial research and development thought of the skilled in the art continuing a research and development path in a physical direction of the diaper itself is broken, and a research and development path and a technical solution which are environment-friendly, safe in use, convenient to operate, controllable in cost and accurate in anomaly prewarning are successfully and non-obviously applied.

Abstract: An absorbent article having a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent layer enveloped therebetween is disclosed. The topsheet comprises a fibrous nonwoven material and has an upper topsheet surface and a lower topsheet surface. The lower topsheet surface exhibits a lower topsheet surface Sdc less than 0.350 mm, and the upper topsheet surface exhibits an upper topsheet surface Sdc that is greater than the lower topsheet surface Sdc. Additionally, or alternatively, the lower topsheet surface exhibits a lower topsheet surface Sdr % less than 0.80; and the upper topsheet surface exhibits an upper topsheet surface Sdr % that is greater than the lower topsheet surface Sdr %. The absorbent layer comprises a layer of open-cell foam having an upper foam surface that is in direct facing contact with the lower topsheet surface.

Abstract: A patient transport apparatus comprises a support structure. The support structure comprises a base, a frame, and a patient support surface to support a patient. One or more handle assemblies are coupled to the frame to maneuver the patient transport apparatus. Each handle assembly comprises a handle and a handle extension supporting the handle. The handle extension is configured to articulate relative to the frame from a stowed position to a use position such that the handle is adjacent to the frame in the stowed position and the handle is extended from the frame by the handle extension in the use position. The apparatus also includes a locking device comprising one or more locking elements configured to discretely lock and unlock the handle extension relative to the frame in the use position or the stowed position.

Abstract: In one embodiment, a cot loading and unloading system includes a fixed rail having a track, wherein the fixed rail is operable to be fixed to a floor, and a carriage directly coupled to the track and operable to travel along the fixed rail on the track, wherein the carriage is further operable to travel to an extended position such that at least a portion of the carriage extends beyond a length of the fixed rail.

Abstract: In one embodiment, a system includes a cot loading and unloading system having a fixed rail including a track, wherein the fixed rail is operable to be fixed to a floor, a carriage having a carriage wireless chip, wherein the carriage is coupled to the track and operable to travel along the fixed rail on the track, and a master controller having a master wireless chip. The system further includes a cot having a cot wireless chip. The master wireless chip is operable to transmit a broadcast address to the cot, and the cot wireless chip is operable to receive the broadcast address and transmit a cot address signal. The carriage wireless chip is operable to receive the cot address signal and transmit a strength signal based on the cot address signal. The master controller receives the strength signal from the carriage wireless chip.

Abstract: In one embodiment, a carriage of a cot loading and unloading system includes a plurality of wheels for engaging a track defined by a fixed rail of the cot loading and unloading system, a power drive assembly operable to drive the carriage to travel along the track of the fixed rail, and a pair of lift arms for supporting a cot.

Abstract: A cargo lift system for a vehicle includes a frame system, a deck system, and a cargo hook. The frame system is configured to be attached to the vehicle. The deck system includes a deck frame having a plurality of deck frame segments. The deck system is operable to translate along the frame system in (i) a first deployment mode where the deck frame segments cooperate to define a rigid support platform and (ii) a second deployment mode where the deck frame segments articulate to a lift position adjacent to a ground surface associated with the vehicle The cargo hook is attached to the deck system and operable to move between an extended state and a retracted state.

Abstract: In one embodiment a support beam for supporting a carriage of a cot loading and unloading system includes a support beam member operable to translate within a fixed rail that is fixed to a vehicle, and operable to support the carriage beyond a length of the fixed rail when the support beam is in an extended position.

Abstract: In one embodiment, a carriage of a cot loading and unloading system, the carriage includes a plurality of wheels for engaging a track defined by a fixed rail of the cot loading and unloading system, wherein the carriage is operable to travel to an end of the fixed rail such that a portion of the carriage extends beyond a length of the track, and a pair of load arms for supporting a cot.

Abstract: In one embodiment, a removable section of a fixed rail for a cot loading and unloading system, the removable section includes a first side, a second side, wherein each of the first side and the second side define a track for wheels of a carriage operable to translate on the fixed rail and the removable section, and at least one fastening mechanism for removably attaching the removable section to an end roller support section of the fixed rail.

Abstract: A wheelchair including a wheelchair propulsion system adapted to independently operate each of a pair of drive wheels by corresponding independent manual rotation of a pair of cranks.

Abstract: An integrated automatic turning bed system is provided. The system integrates the system controller with subsystems such as an electric turning bed, a pressure-sensing mattress, and/or an electronic diaper machine, and achieves comprehensive care for incapacitated bedridden people through automation and intelligence. By utilizing subsystem sensing and system controller to control and ensure the stability, reliability, and control accuracy of the system, the safety and comfort of the bedridden people can be ensured and care services are improved, which also effectively reduces the burden on caregivers at the same time.

Abstract: A cushion promotes healthy blood flow within the body when the patient is sitting/lying down. A pressure controlling support automatically balances user weight, detects application of user weight, or otherwise detects when the user is at-risk for pressure sores. Pressure is dynamically redistributed by inflation/deflation of individual bladders, rebalancing user support. The cushion prevents the user from applying their weight to impede their blood flow at an at-risk location or from cramping their musculature. The cushion also massages the user's musculature, by moving a pressure difference about selected bladders, promoting blood flow and reducing seating fatigue. The cushion detects changes in pressure at each bladder, to detect/predict user fidgeting/movement and adjust pressure in response thereto, to support the user's new position.

Abstract: A patient support apparatus for supporting a patient in a prone position during a surgical procedure is provided, including an open fixed frame suspended above a floor and a pair of spaced opposed radially sliding joints cooperating with the frame, each joint including a virtual pivot point and an arc of motion spaced from the virtual pivot point, the joints being movable along the arc providing a pivot ship mechanism for a pair of pelvic pads attached to the joints. A base for supporting and suspending a patient support structure above the floor, for supporting a patient during a surgical procedure, the base including a pair of spaced opposed vertical translation subassemblies reversibly attachable to a patient support structure, a cross-bar, and a rotation subassembly having two degrees of rotational freedom; wherein a location of each vertical translation subassembly is substantially constant during operation of the patient support structure.

Abstract: A surgical patient support includes a foundation frame, a support top, and a brake system. The foundation frame includes a first column and a second column. The support top is coupled to the first column and the second column for rotation about a top axis extending along the length of the support top. A rail clamp apparatus for clamping onto a rail of the support top is also provided.