Patent Publication Number: US-9848756-B2

Title: Compact monitor stand

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a continuation application of U.S. patent application Ser. No. 14/594,947, entitled “Compact Monitor Stand” and filed on Jan. 12, 2015, which relies upon, for priority, U.S. Provisional Patent Application No. 61/926,769, entitled “Monitor Stand” and filed on Jan. 13, 2014, and U.S. Provisional Patent Application No. 61/939,566, entitled “Compact Monitor Stand” and filed on Feb. 13, 2014. 
     U.S. patent application Ser. No. 14/594,947 is also related to U.S. patent application Ser. No. 14/273,923, entitled “Operational Interface In A Multi-Viewing Elements Endoscope”, and filed on May 9, 2014, which relies upon U.S. Provisional Patent Application No. 61/822,563, entitled “Systems and Methods for Displaying a Plurality of Contiguous Images with Minimal Distortion” and filed on May 13, 2013. 
     All of the above-mentioned applications are herein incorporated by reference in their entirety. 
    
    
     FIELD 
     The present specification relates generally to endoscopes, and more specifically, to a stand for supporting one or more endoscope monitor screens. The present specification also relates to a monitor stand cart that can be used to carry endoscopic equipment and may be transported in a medium sized vehicle. 
     BACKGROUND 
     An endoscope conventionally comprises an elongated tubular shaft, rigid or flexible, having a video camera and/or a fiber optic lens assembly at its distal end. Various surgical tools may be inserted through a working channel in the endoscope for performing different surgical procedures. Endoscopes, such as colonoscopes, that are currently being used, typically have a front camera for viewing the internal organ, such as the colon, an illuminator, a fluid injector for cleaning the camera lens, and a working channel for insertion of surgical tools, for example, for removing polyps found in the colon. Often, endoscopes also have fluid injectors (“jet”) for cleaning a body cavity, such as the colon, into which they are inserted. The illuminators commonly used are fiber optics which transmit light, generated remotely, to the endoscope tip section. 
     Endoscopes having multiple viewing elements, such as cameras, generate multiple video feeds which require display. These video feeds are typically generated in native or standard square formats of aspect ratios 4:3 or 5:4. Such native square formatted video feeds when displayed on widescreen or rectangular monitors cause ‘pillar-boxing’ if not modulated to fit the widescreen but result in unacceptable image/video distortion if modulated to fill the entire widescreen. 
     Hence, the video feeds generated by a plurality of viewing elements of an endoscopic tip are processed such that the video feeds can be displayed appropriately on a plurality of advantageous configurations of widescreen monitors. Usually three monitors (a left, a center and a right side monitor) are placed side-by-side or contiguously. In some cases, the three monitors together provide a panoramic view based on an overlap between fields of view of the three viewing elements (front-looking and the two side-looking viewing elements). 
     There is need for an arrangement for supporting the monitors so that they may be viewed by an operating physician with ease. 
     SUMMARY 
     The present specification discloses an apparatus for supporting one or more monitors, comprising: a base stand comprising one or more wheels; a rigid frame stand having a top end and a bottom end coupled with the base stand and comprising a center frame portion extending from said top end to said bottom end; a pivoting mechanism comprising: a pivoting bracket attached to and vertically slidable along said center frame portion; a pivoting post fixedly attached to said pivoting bracket; and a pivoting bearing positioned on and horizontally rotatable about said pivoting post; a monitor arm assembly having a bow shape with a concave surface, a convex surface, a center portion, left end portion, right end portion and a center bracket attached to said center portion wherein the concave surface of each of said portions is configured to fixedly receive a monitor, further wherein said center bracket attaches to said pivoting bearing on said convex surface; wherein said monitor arm assembly is horizontally rotatable relative to said rigid frame stand by rotating said pivoting bearing about said pivoting post and a height of said monitor arm assembly is adjustable by sliding said pivoting bracket along said center frame portion. 
     Optionally, the apparatus further comprises a locking mechanism for locking said pivoting bracket at a fixed vertical position on said center frame portion. 
     The apparatus may be configured to receive a left monitor, a center monitor, and a right monitor such that a right edge of said left monitor is flush with a left edge of said center monitor and a left edge of said right monitor is flush with a right edge of said center monitor. 
     Optionally, said left portion and said right portion of said monitor arm assembly each include a slot configured to receive a bracket for attaching a monitor wherein said bracket is horizontally slidable within said slot for adjusting a horizontal position of an attached monitor. Each slot may be positioned approximately 120.0 millimeters to 140.0 millimeters, and more preferably 130.9 millimeters, from a free end of said left portion and said right portion opposite said center portion. Each slot may have a length ranging from approximately 25.0 millimeters to 50.0 millimeters, and more preferably 38.2 millimeters. Optionally, each bracket includes a flange on a top and bottom edge of said bracket to prevent rotational movement of the bracket about said monitor arm assembly. 
     Each of said left and right portions of said monitor arm assembly may be bent at angle of approximately 20 degrees with respect to a horizontal plane of said center portion to create said bow shape. 
     Optionally, the base stand is an isolation transformer assembly stand for supporting an isolation transformer, the isolation transformer assembly stand balancing the weight of the monitors coupled with the monitor arm assembly. 
     Optionally, an underside of the isolation transformer assembly stand is coupled with two front wheels and two rear wheels enabling movement of the assembly stand, wherein at least the rear wheels comprise a locking mechanism for fixing position of the apparatus. 
     Optionally, said monitor arm assembly is hollow, composed of aluminum, and includes a plurality of spacers configured to provide structural strength to said monitor arm assembly. 
     The present specification also discloses an apparatus for supporting one or more monitors, comprising: a base stand comprising one or more wheels; a first rigid frame portion having a top end and a bottom end coupled with the base stand; a second extendable frame portion having a top end, a bottom end, and a channel extending from said top end to said bottom end, said second extendable frame portion being telescopically extendable from and into said top of said first rigid frame portion from a first top vertical position to a second bottom vertical position and a plurality of vertical positions therebetween; a locking mechanism for fixing said second extendable frame portion in a vertical position within said first rigid frame portion; a coupling component having at least one opening, a first plurality of holes, and a second plurality of holes and positioned and vertically slidable within said channel from a third top vertical position to a fourth bottom vertical position and a plurality of vertical positions therebetween; a monitor arm assembly having a bow shape with a concave surface, a convex surface, a center portion, left end portion, right end portion and a peg extending from said convex surface of said center portion wherein the concave surface of each of said portions is configured to fixedly receive a monitor, and said peg is configured to insert into said at least one opening such that said monitor arm assembly is removably attachable to and rotatable within said coupling component; a first plurality of pins configured to pass through said first plurality of holes in said coupling component and into said peg of said monitor arm assembly to fixedly attach said monitor arm assembly to said coupling component; and a second set of pins configured to pass through said second plurality of holes in said coupling component and into said channel of said second extendable frame portion to lock said coupling component in a vertical position within said channel; wherein said apparatus is transformable from a first collapsed configuration for storage and transport into a second operational configuration for receiving at least one monitor. 
     The apparatus may be configured to receive a left monitor, a center monitor, and a right monitor such that a right edge of said left monitor is flush with a left edge of said center monitor and a left edge of said right monitor is flush with a right edge of said center monitor. 
     Optionally, said left portion and said right portion of said monitor arm assembly each include a slot configured to receive a bracket for attaching a monitor wherein said bracket is horizontally slidable within said slot for adjusting a horizontal position of an attached monitor. Each slot may be positioned approximately 120.0 millimeters to 140.0 millimeters, and more preferably 130.9 millimeters, from a free end of said left portion and said right portion opposite said center portion. Each slot may have a length ranging from approximately 25.0 millimeters to 50.0 millimeters, and more preferably 38.2 millimeters. Optionally, each bracket includes a flange on a top and bottom edge of said bracket to prevent rotational movement of the bracket about said monitor arm assembly. 
     Each of said left and right portions of said monitor arm assembly may be bent at angle of approximately 20 degrees with respect to a horizontal plane of said center portion to create said bow shape. 
     The locking mechanism may comprise a lever or button which, when actuated, allows said second extendable frame portion to be moved relative to said first rigid frame portion. 
     Optionally, when in said first collapsed configuration, said second extendable frame portion is in said second bottom vertical position, said coupling component is in said fourth bottom vertical position, and said monitor arm assembly is removed from said coupling component or rotated within said opening of said coupling component such that a long axis of said monitor arm assembly is parallel to said second extendable frame portion. 
     The apparatus, when in said first collapsed configuration, may have a height of approximately 45.3 inches. 
     Optionally, when in said second operational configuration, said second extendable frame portion is in said first top vertical position or any vertical position above said second bottom vertical position, said coupling component is in said third top vertical position or any vertical position above said fourth bottom vertical position, and said monitor arm assembly is rotated within said opening of said coupling component such that a long axis of said monitor arm assembly is perpendicular to said second extendable frame portion. 
     The apparatus, when in said second operational configuration, may have a height of approximately 62.1 inches. 
     Optionally, the base stand is an isolation transformer assembly stand for supporting an isolation transformer, the isolation transformer assembly stand balancing the weight of the monitors coupled with the monitor arm assembly. 
     Optionally, an underside of the isolation transformer assembly stand is coupled with two front wheels and two rear wheels enabling movement of the assembly stand, wherein at least the rear wheels comprise a locking mechanism for fixing position of the apparatus. 
     Optionally, said monitor arm assembly is hollow, composed of aluminum, and includes a plurality of spacers configured to provide structural strength to said monitor arm assembly. 
     Optionally, said first rigid frame portion is detachable from said base stand. 
     The base stand, first rigid frame portion with second extendable frame and coupling component, and said monitor arm assembly may have weights of approximately 20 pounds, 35 pounds, and 12 pounds, respectively. 
     The present specification also discloses a method of transforming a monitor stand from a first collapsed configuration into a second operation configuration, said method comprising the steps of: providing a monitor stand comprising: a base stand comprising one or more wheels; a first rigid frame portion having a top end and a bottom end coupled with the base stand; a second extendable frame portion having a top end, a bottom end, and a channel extending from said top end to said bottom end, said second extendable frame portion being telescopically extendable from and into said top of said first rigid frame portion from a first top vertical position to a second bottom vertical position and a plurality of vertical positions therebetween; a locking mechanism for fixing said second extendable frame portion in a vertical position within said first rigid frame portion; a coupling component having at least one opening, a first plurality of holes, and a second plurality of holes and positioned and vertically slidable within said channel from a third top vertical position to a fourth bottom vertical position and a plurality of vertical positions therebetween; a monitor arm assembly having a bow shape with a concave surface, a convex surface, a center portion, left end portion, right end portion and a peg extending from said convex surface of said center portion wherein the concave surface of each of said portions is configured to fixedly receive a monitor, and said peg is configured to insert into said at least one opening such that said monitor arm assembly is removably attachable to and rotatable within said coupling component; a first plurality of pins configured to pass through said first plurality of holes in said coupling component and into said peg of said monitor arm assembly to fixedly attach said monitor arm assembly to said coupling component; and a second set of pins configured to pass through said second plurality of holes in said coupling component and into said channel of said second extendable frame portion to lock said coupling component in a vertical position within said channel; removing said second plurality of pins; sliding the coupling component to the third top position or any other vertical position above said fourth bottom vertical position; re-inserting said second plurality of pins; releasing said locking mechanism; extending said second extendable frame portion from said top end of said first rigid frame portion to said first top vertical position or any other vertical position above said second bottom position; re-engaging said locking mechanism; removing said first plurality of pins; rotating the monitor arm assembly into a horizontal position perpendicular to said second extendable frame portion; and re-inserting said first plurality of pins. 
     Optionally, when in said collapsed configuration, said monitor arm assembly is detached from said coupling component, and said method further comprises the initial steps of: removing said second plurality of pins; inserting said peg of said monitor arm assembly into said at least one opening in said coupling component with the monitor arm assembly in a vertical position parallel to said second extendable frame portion; and re-inserting said second plurality of pins. 
     Optionally, when in said collapsed configuration, said first rigid frame is detached from said base stand, and said method further comprises the initial step of coupling said bottom end of said first rigid frame with said base stand. 
     The present specification also discloses an apparatus for supporting a monitor and one or more shelves, comprising: a base stand comprising one or more wheels; a rigid spine portion having at least two spacers, a bracket nose surface, a top end and a bottom end coupled with the base stand; a monitor support member coupled to said top end of said spine portion; and at least one shelf removably coupled to said spine portion and comprising a flat surface with two hooked shaped extensions and a knob; wherein linear force applied to said knob in a direction toward said bracket nose surface is converted to rotational torque to cause said hooked shaped extensions to engage said spacers and fixedly secure said shelf to said spine portion. 
     Optionally, the apparatus further comprises a support shelf for supporting a main control unit wherein said support shelf includes a flat surface with two hooked shaped extensions and a knob and is removably coupled to said spine portion in the same manner as said at least one shelf. 
     Optionally, the apparatus further comprises a locking bushing mechanism for removably attaching said spine portion to said base stand. 
     The aforementioned and other embodiments of the present specification shall be described in greater depth in the drawings and detailed description provided below. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and other features and advantages of the present specification will be appreciated, as they become better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein: 
         FIG. 1A  shows a back view of a monitor stand, in accordance with an embodiment of the present specification; 
         FIG. 1B  shows a front view of a monitor stand, in accordance with an embodiment of the present specification; 
         FIG. 2A  illustrates a monitor arm assembly, in accordance with an embodiment of the present specification; 
         FIG. 2B  illustrates another view of a monitor arm assembly, in accordance with an embodiment of the present specification; 
         FIG. 2C  illustrates the monitor arm assembly with a magnified view of a first raised portion, in accordance with an embodiment of the present specification; 
         FIG. 2D  illustrates a further magnified view of a first raised portion, in accordance with an embodiment of the present specification; 
         FIG. 2E  illustrates a magnified view of a left portion of the monitor arm assembly attached with a left bracket for coupling with a monitor, in accordance with an embodiment of the present specification; 
         FIG. 2F  illustrates a front view of the monitor arm assembly, in accordance with an embodiment of the present specification; 
         FIG. 2G  illustrates a magnified view of a monitor arm assembly with monitors attached thereto coupled to a monitor stand frame, in accordance with one embodiment of the present specification; 
         FIG. 3A  illustrates an embodiment of the monitor stand that may be folded/dismantled; 
         FIG. 3B  illustrates the monitor stand partially dismantled, in accordance with an embodiment of the present specification; 
         FIG. 4A  illustrates the monitor stand in a partially dismantled configuration, in accordance with another embodiment of the present specification; 
         FIG. 4B  illustrates the monitor stand in a partially dismantled configuration, in accordance with another embodiment of the present specification; 
         FIG. 4C  illustrates the monitor stand in a partially dismantled configuration, in accordance with an embodiment of the present specification; 
         FIG. 4D  illustrates a monitor stand in a partially dismantled configuration showing handles provided for changing the height of the monitor stand, in accordance with an embodiment of the present specification; 
         FIG. 4E  illustrates a magnified view of the handles shown in  FIG. 4D , in accordance with an embodiment of the present specification; 
         FIG. 4F  is a flow chart listing the steps involved in transforming a monitor stand from a stowed configuration, similar to that shown in  FIG. 3A , to an operational configuration, similar to that shown in  FIG. 3B ; 
         FIG. 5A  illustrates a collapsible monitor stand cart comprising a plurality of shelves, in accordance with an embodiment of the present specification; 
         FIG. 5B  illustrates the collapsible monitor stand cart with at least one shelf removed in accordance with an embodiment of the present specification; 
         FIG. 5C  illustrates the collapsible monitor stand cart in a dismantled state, in accordance with an embodiment of the present specification; 
         FIG. 5D  illustrates another view of the collapsible monitor stand cart, in accordance with an embodiment of the present specification; 
         FIG. 6A  illustrates a front view of a shelf attached to a spine portion of the collapsible monitor stand cart in accordance with an embodiment of the present specification; 
         FIG. 6B  illustrates a magnified cross-sectional view of the section A-A marked on  FIG. 6A ; 
         FIG. 6C  illustrates a magnified view of the portion marked B on  FIG. 6B ; 
         FIG. 7A  illustrates another front view of a shelf attached to a spine portion of the collapsible monitor stand cart, in accordance with an embodiment of the present specification; 
         FIG. 7B  illustrates a magnified cross-sectional view of the section A-A marked on  FIG. 7A ; 
         FIG. 7C  illustrates a magnified view of the portion marked B on  FIG. 7B ; 
         FIG. 8A  illustrates a front view of a spine portion of the monitor stand attached to a base stand, in accordance with an embodiment of the present specification; 
         FIG. 8B  is a magnified cross-sectional view of the portion labeled C-C in  FIG. 8A ; and 
         FIG. 8C  is a magnified view of the portion labeled D in  FIG. 8B . 
     
    
    
     DETAILED DESCRIPTION 
     The present specification provides a monitor stand for mounting at least one, and up to three monitors. The monitor stand comprises an erect stand coupled with a monitor arm assembly, for supporting one or more monitor screens (or displays), which may be rotated about a top end of the erect portion of the monitor stand. In an embodiment, a backside of a monitor or display is coupled with the monitor arm assembly via a coupling means as described below. In various embodiments, the monitor stand of the present specification may be folded and/or dismantled for transport. 
     In another embodiment, the present specification provides an integrated cart and monitor stand that comprises at least a spine portion, a base stand attached to a lower end of the spine portion, and multiple shelves for holding equipment related to endoscopes such as a main control unit, additional monitor screens, supplies, etc., along with their respective cords, attached at a plurality of locations along the length of the spine portion. In various embodiments, the base stand and shelves may be dismounted from the spine portion easily without the use of any specialized tools. Further, the weight and dimension of the various parts of the cart and monitor stand facilitate transportation of the same in a mid-sized vehicle. 
     The present specification is directed towards multiple embodiments. The following disclosure is provided in order to enable a person having ordinary skill in the art to practice the invention. Language used in this specification should not be interpreted as a general disavowal of any one specific embodiment or used to limit the claims beyond the meaning of the terms used therein. The general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention. Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention. 
     The present specification provides a monitor stand  100  for mounting up to three monitors at a time.  FIG. 1A  shows a backside view of the monitor stand  100 , in accordance with one embodiment of the present specification.  FIG. 1B  shows a front view of the monitor stand  100 , in accordance with one embodiment of the present specification. Referring to  FIGS. 1A and 1B  simultaneously, in various embodiments, the monitor stand  100  enables mounting of up to three monitors  102 . In an embodiment, the monitors  102  each weigh a maximum of approximately 20 pounds and are approximately 20 inches wide, although it should be understood that any size monitor may be employed with the stands described in the present specification. In various embodiments, the configuration of the monitor stand  100  can be adjusted for use with monitors of different width or weights. As shown in  FIGS. 1A and 1B , the monitors  102  are mounted side to side in an arcuate shape, resembling a bow, such that the backs  102   b  of the monitors  102  are attachable to the monitor stand  100  and form a convex surface and that the screens  102   a  of the monitors  102  are facing an endoscope operator (not shown) and form a concave surface. 
     The monitor stand  100  comprises a monitor arm assembly  104  for mounting or holding the monitors  102  in place. The monitor arm assembly  104  is movably attached to a monitor stand frame  106  which holds the monitor stand  100  in an upright position. In an embodiment, the monitor arm assembly  104  is bow shaped and rotatable with respect to the monitor stand frame  106 . In an embodiment, the monitor arm assembly  104  is affixed by a clamp attached to a post on the monitor stand frame  106  that operates as the axis of rotation. Further in an embodiment, a handle is provided on the clamp to enable the user to lock the monitor arm assembly  104  in a desired position with respect to the monitor stand frame  106 . This adjustable movement enables an operator to make the monitors  102  face a desired direction by rotating the monitor arm assembly  104 . In one embodiment, the monitor arm assembly may be rotated through an angle of 360 degrees from either side with respect to a point of attachment with the monitor stand frame  106 . In an embodiment, the monitor arm assembly  104  may be rotated through an angle of 45 degrees from either side with respect to a point of attachment with the monitor stand frame  106 . In an embodiment, the monitor arm assembly  104  may be rotated through an angle of 30 degrees from either side with respect to a point of attachment with the monitor stand frame  106 . 
     In an embodiment, the monitors are supported by an isolation transformer that minimizes leakage current that may be caused by the monitors. The isolation transformer transfers electrical power from an alternating current (AC) power source to the monitors while isolating said monitors from the power source. This serves to suppress electrical noise between the monitors and protect against electric shock. In an embodiment, the monitor stand frame  106  is attached with an isolation transformer assembly stand  108  for supporting an isolation transformer and also providing a base for balancing the weight of the monitors  102  supported by the monitor arm assembly  104 . The isolation transformer assembly stand  108  has a top surface, a bottom surface, a front side and a back side. Further, a groove is provided on the back side for attaching the monitor stand frame  106 . In an embodiment, the isolation transformer is attached to a bracket that is assembled with screws onto the monitor stand frame  106 . 
     Further, in various embodiments, isolation transformer assembly stand  108  comprises at least one wheel, and preferably two front wheels  110  and two rear wheels  112 , mounted on the bottom surface of the isolation transformer assembly stand  108  for mobility of the monitor stand  100 . In the embodiment shown in  FIGS. 1A and 1B , two front wheels  110  and two rear wheels  112  are provided on an underside of the isolation transformer assembly stand  108 . The front and rear wheels  110 ,  112  enable the monitor stand  100  to be mobile. The monitor stand  100  may be moved to a desired location even during operation of the monitors  102 . In an embodiment, only the rear wheels  112  are provided with a locking mechanism for fixing the position of the monitor stand  100  in a desired location while in another embodiment, both the front and rear wheels  110 ,  112  are provided with a locking mechanism. 
       FIG. 2A  illustrates the monitor arm assembly  200 , in accordance with an embodiment of the present specification. The monitor arm assembly  200  has an arcuate shape having a middle or center portion  202 , that is substantially straight, a first end or left portion  204 , that is raised relative to the middle portion, and a second end or right portion  206 , that is raised relative to the middle portion. In an embodiment, the monitor arm assembly is approximately 1209 mm long and the two end portions  204 ,  206  are raised, or bent, at an angle of approximately 20 degrees from the plane of the straight portion  202 . Also, in an embodiment, the two end portions  204 ,  206  are raised, or bent, to a height of approximately 142 mm from the plane of the straight portion  202 . One monitor is supported by each of the first end portion  204 , the second end portion  206  and the middle straight portion  202 . 
       FIG. 2B  illustrates another view of the monitor arm assembly  200 . Three monitors may be mounted on the monitor arm assembly  200 . In an embodiment, one monitor may be mounted on the first end or left portion  204  by means of a left bracket  208 , a second monitor may be mounted on the straight or center portion  202  by means of a center bracket  210  and a third monitor may be mounted on the second end or right portion  206  by means of right bracket  212 . The brackets  208 ,  210  and  212  fix the monitors onto the monitor arm assembly  200  in such a way that the edges of all the monitors are aligned with each other. In various embodiments, the brackets  208 ,  210 ,  212  are positioned proximate a center of each corresponding portion  204 ,  202 ,  206 . The brackets  208 ,  210 ,  212  are horizontally slidable and fixable along said center of each portion  204 ,  202 ,  206 , as described in further detail with respect to slot  214  of  FIGS. 2C and 2D . Horizontal movement of the brackets  208 ,  210 ,  212  proximate the center of each portion  204 ,  202 ,  206  allows for edge-to-edge alignment of monitors of varying sizes. When a left monitor is attached to the left bracket  208 , which is affixed to the left portion  204 , a right edge of said left monitor is flush with a left edge of an attached center monitor, said center monitoring being attached to the center bracket  210 , which, in turn, is affixed to the center portion  202 . In the same manner, when a right monitor is attached to the right bracket  212 , which is affixed to the right portion  206 , a left edge of said right monitor is flush with a right edge of the attached center monitor. 
       FIG. 2C  illustrates the monitor arm assembly  200  with a magnified view of the first end portion  204 .  FIG. 2D  illustrates a further magnified view of the first or left end portion  204 . In various embodiments, the monitor arm assembly has a height dimension h a  of approximately 2 inches and a width dimension w a  of approximately 1 inch. As shown in  FIGS. 2C and 2D , the end portion  204  comprise a slot  214 . The left bracket  208  comprises a protruding pin  216  which is inserted into the slot  214 , as shown, and is used for securely attaching the bracket  208  to the first end portion  204  by means of screw  218 . In various embodiments, a height dimension h s  of the slot  214  varies from 5.0 millimeters to 10.0 millimeters and, in one embodiment, is preferably 8.2 millimeters, thereby allowing an M8 stud of the bracket  208  to slide into the slot  214  with ease. In various embodiments, a left edge of the slot  214  varies from approximately 120.0 millimeters to 140.0 millimeters and, in one embodiment, is preferably 130.9 millimeters, from a left end of the left end portion  204 . In various embodiments, a length dimension l s  of the slot  214  varies from 25.0 millimeters to 50.0 millimeters and, in one embodiment, is preferably 38.2 millimeters, to allow for sliding and positioning of the bracket  208  along the length of the slot  214 . This feature enables the monitor arm assembly  200  to accommodate monitors of varying sizes while still allowing for flush edge-to-edge positioning of the monitors, thereby providing a substantially seamless panoramic view of the monitor screens. Right bracket  212  is securely attached to the second or right end portion  206  in a similar manner. In an embodiment, bracket  210  comprises two portions, namely a smaller bracket fixed to the monitor and a bigger bracket attached to the straight portion  202 . Both the smaller and the bigger bracket have the same shape/angle on a side rib for better guidance and the bigger bracket comprises a thumb screw that locks the smaller bracket to the straight portion  202 . 
       FIG. 2E  illustrates a magnified view of a left portion  204  of the monitor arm assembly  200  attached with a left bracket  208  for coupling with a monitor, in accordance with an embodiment of the present specification. As shown, screw  218  holds the bracket  208  in place. Mating areas  220  eliminate rotation of the monitor with respect to the monitor arm assembly  200  and fix the monitor in position. In an embodiment, flanges  223  of the bracket  208  which are parallel to the monitor arm assembly  200  eliminate rotation of a monitor held by the monitor arm assembly  200  and fixes its position. The flanges  223  extend over top and bottom edges of the monitor arm assembly  200  and prevent rotational movement of the bracket  208  about said monitor arm assembly  200 . Minimal clearance between the flanges  223  of the bracket  208  and the monitor arm assembly  200  prevents the bracket  208  from rotating, as upon rotation the flanges  223  would hit the monitor arm assembly  200  stopping the rotation. 
       FIG. 2F  illustrates a front view of the monitor arm assembly  200 , in accordance with an embodiment of the present specification. The straight or center portion  202  comprises six aluminum spacers  222 ,  224 ,  226 ,  228 ,  230 ,  232 , and two inserts  234  flush with a front surface of the straight portion  202  of the monitor arm assembly  200 . In an embodiment, the distance between the two inserts  234  is 35 mm. Also in an embodiment, a first distance between spacers  222  and  232  is approximately 214.20 mm, a second distance between spacers  224  and  230  is approximately 134.20 mm, and a third distance between spacers  226  and  228  is 88.90 mm. In an embodiment, each of the spacers has an internal diameter of approximately 5/16 inches and a length of approximately one inch. In an embodiment, the spacers are welded flush to the surface of the monitor arm assembly. Referring to  FIGS. 1A, 1B, and 2F  simultaneously, in various embodiments, the inserts  234  are used to attach the monitor stand frame  106  to the monitor arm assembly  200  in a pivot like arrangement, enabling rotation of the monitor arm assembly  200  coupled with the monitors in a user desired direction with respect to the monitor stand frame  106 . In various embodiments, the monitor arm assembly is made of aluminum and has a low weight. The spacers  222 ,  224 ,  226 ,  228 ,  230 ,  232  strengthen the structure of the monitor arm assembly. Further in various embodiments, the monitor arm assembly is a hollow structure, and hence, tightening a screw through the structure would cause the screw to bend the assembly internally. Therefore, the use of spacers  222 ,  224 ,  226 ,  228 ,  230 ,  232  ensures secure attachment of the monitor arm assembly with the monitor stand frame  106  without causing any damage to the monitor arm assembly. 
       FIG. 2G  illustrates a magnified view of a monitor arm assembly  200  with monitors  251 ,  252 ,  253  attached thereto coupled to a monitor stand frame  246 , in accordance with one embodiment of the present specification. A center monitor  252  is attached to the monitor arm assembly  200  via a center mounting bracket  210 . The center mounting bracket  210  also serves to couple the monitor arm assembly  200  to a pivoting mechanism  240  of the rigid monitor stand frame  246 . The pivoting mechanism comprises a pivoting bearing  241  which is coupled, via a pair of nuts and bolts  242 , to the center mounting bracket  210 . The bolts pass from the center mounting bracket  210  through the inserts ( 234  of  FIG. 2F ) of the monitor arm assembly  200  and are fixed to the pivoting bearing  241  by the nuts, thereby securely attaching the monitor arm assembly  200  to the pivoting assembly  240 . The pivoting assembly  240  also includes a pivoting post  243  which is attached via a pivoting mechanism bracket  245  to a center frame portion  247  of the monitor stand frame  246 . The center frame portion  247  extends from a top end of the monitor frame stand  246  to a bottom end of the monitor frame stand  246 . The pivoting bearing  241  is positioned on and rotatable about the pivoting post  243 . A locking ring  244  attaches to the pivoting post  243  above the pivoting bearing  241  to prevent the pivoting bearing  241 , and attached monitor arm assembly  200 , from slipping off the pivoting post  243 . Once the pivoting mechanism  240  has been assembled, a user may pivot the monitor arm assembly  200  in a horizontal plane relative to the monitor stand frame  246  by applying slight pressure to either side of said monitor arm assembly  200 . The pivoting bearing  241  is free to rotate about the pivoting post  243 , which allows all three monitors to be pivoted in the same direction/manner concurrently. Additionally, in some embodiments, the pivoting mechanism bracket  245  may be slid vertically along the center frame portion  247  of the monitor stand  246  to adjust the height of the monitor arm assembly  200 . In one embodiment, a locking mechanism is included for locking the pivoting mechanism bracket  245  at a fixed vertical position on the center frame portion  247 . 
     In various embodiments, the present specification provides a light weight and compact monitor stand that may be transported in a medium to small size vehicle. Further, in various embodiments, the monitor stand may be dismantled by detaching the monitor stand frame from the isolation transformer base stand and the monitor arm assembly. 
     In an embodiment, the monitor stand of the present specification may be folded and/or dismantled for transport.  FIG. 3A  illustrates an embodiment of the monitor stand in an extended and assembled position. The monitor stand  300  comprises a first fixed rigid stand frame or spine portion  302  and a second extendable stand frame portion  304 . The second extendable stand frame portion  304  includes a top end and a bottom end and is sized and adapted to telescopically extend from and into the rigid frame portion  302 . In various embodiments, the monitor stand  300  includes a locking mechanism for fixing the extendable frame portion  304  at a specific position within and relative to the rigid frame portion  302 . In various embodiments, the locking mechanism comprises a lever or button that is pressed by a user, allowing free movement of the extendable frame portion  304 . When the lever or button is released, the extendable frame portion  304  becomes locked in place. 
     A monitor arm assembly  306  is coupled with an upper end of the second extendable stand frame portion  304  via a coupling component  305 . The coupling component  305  enhances the collapsibility of the monitor stand  300  in two ways: it allows for detachable coupling of the monitor arm assembly  306  from, and rotation relative to, the second extendable stand frame portion  304 ; and, it is vertically slidable within said second extendable stand frame portion  304  from a first, top position relative to the second extendable stand frame portion  304 , as depicted in  FIG. 3A , to a second, bottom position relative to the second extendable stand frame portion  304 , as depicted in  FIG. 3B , and any position therebetween. The coupling component  305  is further described with reference to  FIGS. 4D and 4E . 
     When in an assembled configuration for supporting one or more monitor screens, the entirety of the monitor arm assembly  306  is horizontal and lies in a plane perpendicular to the plane of the first and second stand frame portions  302 ,  304 , as illustrated. As shown, the second extendable stand frame portion  304  extends from a top end of the first fixed stand frame portion  302 . A bottom end of the first fixed stand frame portion  302  is coupled with a base stand  308  provided with wheels  310 . In an embodiment, a total height of the monitor stand  300  as illustrated in  FIG. 3A  in a fully extended position (from a bottom end of the wheels  310  to the top end of the monitor arm assembly  306 ) is approximately 62.1 inches. It should be noted, however, that the dimensions provided in this specification are provided as exemplary dimensions and that the apparatus of the present specification is not limited to the dimensions provided. The width of the monitor stand  300  measured from an outer end of wheel  310   a  to an outer end of the wheel  310   b  is approximately 25.4 inches. 
     The monitor stand  300  in a dismantled configuration is illustrated in  FIG. 3B . When in a stored or disassembled configuration, the entirely of the monitor arm assembly  306  is vertical and lies substantially in the same plane as the first and second stand frame portions  302 ,  304 , as illustrated. The height, measured from a bottom end of the wheels  310   c ,  310   d  to a top end of the second extendable stand frame portion  304 , is approximately 45.3 inches. Further, in an embodiment, the weight of the spine portion  302 , along with the second extendable stand frame portion  304 , is approximately 35 pounds; the weight of the monitor arm assembly  306  is approximately 12 pounds; and, the weight of the stand  308  along with wheels  310  is approximately 20 pounds, thus totaling an overall weight of approximately 67 pounds. The low weight of the components of the monitor stand  300  along with its portable size when in a dismantled configuration enables transportation of the monitor stand  300  in a small or medium sized vehicle. 
       FIG. 3B  illustrates the monitor stand  300  partially dismantled, in accordance with an embodiment of the present specification. In an embodiment, in order to dismantle/fold the monitor stand  300 , the monitor arm assembly  306  is rotated about the point of connection with the second extendable stand frame portion  304  such that the monitor arm assembly  306  occupies a plane parallel to the plane of the first fixed stand frame portion  302 . In an embodiment, the monitor stand  300  includes first and second pins that pass through the coupling component  305  and the monitor arm assembly  306 . When the pins are in a first inserted position, the pins fix the position of the monitor arm assembly  306  on the coupling component  305  relative to the second extendable stand frame portion  304 . When the pins are in a second removed position, the monitor arm assembly  306  is free to either be detached from the second extendable stand frame portion  304  or to rotate with respect to it. In an embodiment, the monitor stand  300  further includes third and fourth pins that pass through the coupling component  305  and the extendable stand frame portion  304 . When the third and fourth pins are in a first inserted position, the vertical position of the coupling component  305  within the extendable stand frame  304  is locked. When the third and fourth pins are in a second removed position, the coupling component  305  may be slid vertically along the extendable frame portion  304 . The pins are shown in greater detail with respect to  FIGS. 4D and 4E . In addition, the extendable stand frame portion  304  is refracted into the first fixed stand frame portion  302  and the coupling component  305  is slid to its second bottom position to dismantle the monitor stand  300  even further. 
       FIG. 4A  illustrates another view of the monitor stand  400  in a dismantled configuration in accordance with an embodiment of the present specification. The height of the monitor stand may be reduced as shown in  FIG. 4A  as compared to the maximum height that the monitor stand may assume as shown in  FIG. 3A . In an embodiment, the height of the monitor stand may be reduced from a maximum height of approximately 62.1 inches to approximately 45.3 inches.  FIG. 4A  shows the monitor stand comprising the rigid frame portion  402 , extendable frame portion  404 , coupling component  405 , a monitor arm assembly  406 , and a base stand  408 . 
       FIG. 4B  illustrates a side view of the monitor stand  400  in a partially dismantled configuration, in accordance with an embodiment of the present specification. In an embodiment, the height of the monitor stand as shown measured from a wheel  410  of the base stand  408  to a tip of the extendable frame portion  404  is approximately 45.3 inches. 
       FIG. 4C  illustrates a dismantled view of the monitor stand  400 , in accordance with an embodiment of the present specification. As shown, the spine portion, or rigid frame portion  402  is separated from the base stand  408  and the monitor arm assembly  406  is separated from the coupling component  405 . Also shown is the extendable frame portion  404 . In an embodiment, the rigid frame portion  402  includes an insertion tab  403  at its bottom end for inserting into an opening  409  on the base stand  408  to couple said rigid frame portion  402  with said base stand  408 . In an embodiment, the weights of the rigid frame portion  402  with retracted extendable frame portion  404  and coupling component  405 , the monitor arm assembly  406 , and the base stand  408  are approximately 35 pounds, 12 pounds, and 20 pounds respectively. The weights, as well as the dimensions, of the rigid frame portion  402 , the monitor arm assembly  406 , and the base stand  408  are such that the monitor stand may be easily transported after dismantling. 
     After such dismantling, the monitor arm assembly  406 , the rigid frame portion  402  with the retracted extendable frame portion  404  and coupling component  405 , and the base stand  408  may be packed separately. The dismantled parts may be transported by using a small to medium sized vehicle. In various embodiments, materials such as aluminum, steel and acrylonitrile-butadiene styrene (ABS) are used to manufacture the monitor stand of the present specification. The structure of the monitor stand is designed to withstand vibrations and remain durable. 
     In various embodiments, four pins are provided that enable the height of the monitor stand to change from that shown in the extended configuration of  FIG. 3A  to that shown in collapsed configuration of  FIG. 4A . In an embodiment, each pin has a screw and nut mechanism that tightens the pin, thereby fixing a position of the coupling component  405  with respect to the extendable frame portion  404  or the monitor arm assembly  406  with respect to the coupling component  405 .  FIG. 4D  illustrates a monitor stand  400  in a dismantled state, in accordance with an embodiment of the present specification. A portion of the monitor stand  412  in  FIG. 4D  comprises the coupling component  405 , pins  414 ,  416 ,  418 ,  4120 , and a peg  413  of the monitor arm assembly  406  for attaching the monitor arm assembly  406  to the coupling component  405  and adjusting the position of the coupling component  405  relative to the extendable frame portion  404 . 
       FIG. 4E  illustrates a magnified view of the section  412  on  FIG. 4D .  FIG. 4E  shows pins  414 ,  416 ,  418  and  420  provided for attaching the monitor arm assembly  406  to the coupling component  405  and for adjusting the position of the coupling component  405  relative to the extendable frame portion  404 . Specifically, pins  414 ,  416  are used for removably attaching the monitor arm assembly  406  to, and rotating it within, the coupling component  405 . Pins  418 ,  420  are used to lock the coupling component  405  in a vertical position relative to the extendable frame portion  404 . 
     With pins  414 ,  416  removed and the monitor arm assembly  406  dissambled from the monitor stand, a user may couple the monitor arm assembly  406  with the coupling component  405  by inserting peg  413  of the monitor arm assembly  406  into opening  407  of the coupling component  405 . At this point, the monitor arm assembly  406  may be freely rotated within the coupling component  405 . The peg  413  includes a plurality of openings for receiving pins  414 ,  416 . In an embodiment, the peg  413  is cylindrically shaped and includes four openings or receptacles, each positioned in a same circular plane and 90 degrees apart from one another along an outer surface of the peg  413 . The receptacles are configured to receive pins  414 ,  416 . When the monitor arm assembly  406  is rotated such that it is positioned in a vertical plane parallel to the extendable frame portion  404 , the two pins  414 ,  416  can be inserted through a first set of holes in the sides of the coupling component  405  and into two opposing receptacles on the peg  413 , fixing the monitor arm assembly  406  in the vertical position for storage and transport. When the monitor arm assembly  406  is rotated such that it is positioned in a horizontal plane perpendicular to the extendable frame portion  404 , the two pins  414 ,  416  can be inserted through holes in the sides of the coupling component  405  and into the other two opposing receptacles on the peg  413 , fixing the monitor arm assembly  406  in the horizontal position, ready for the attachment of monitors. 
     With pins  418 ,  420  removed, the coupling component  405  is free to move vertically within a channel  411  of the extendable frame portion  404 . Inserting pins  418 ,  420  through a second set of holes in the coupling component  405  and into the extendable frame portion  404  locks the coupling component  405  in a vertical position relative to the extendable frame portion  404 . Referring to  FIG. 4E , pins  418 ,  420  are in place and the coupling component  405  is locked in its second, bottom position and is ready for storage and transport. 
       FIG. 4F  is a flow chart listing the steps involved in transforming a monitor stand from a stowed configuration, similar to that shown in  FIGS. 3B and 4C , to an operational configuration, similar to that shown in  FIG. 3A . Optionally, if the rigid frame portion is not attached to the base stand, a user inserts the insertion tab at the bottom end of the rigid frame portion into the opening in the base stand to couple said rigid frame portion with said base stand at step  430 . Optionally, if the monitor arm assembly is not attached to the coupling component, a user removes the first and second pins at step  432 , inserts the monitor arm assembly peg into the opening in the coupling component with the monitor arm assembly in the vertical position, and re-inserts the first and second pins, securely attaching the monitor arm assembly to the coupling component. At step  434 , the user removes the third and fourth pins, slides the coupling component to its first, top position or another vertical position along the channel within the extendable frame portion, and re-inserts the third and fourth pins. Then, at step  436 , the user actuates a lever or button on the monitor stand to release the extendable frame portion from its locked position within the spine portion, extends said extendable frame portion upward into a higher vertical position, and releases said lever or button to re-engage the lock on the extendable frame portion. At step  438 , the user removes the first and second pins, rotates the monitor arm assembly into a horizontal position, and replaces the first and second pins, locking the monitor arm assembly in a horizontal plane and readying it for monitor attachment. In other embodiments, the step of rotating the monitor arm assembly from the vertical position to the horizontal position may be done prior to extending the height of the coupling component and/or extendable frame portion, as long as care is taken to ensure the monitor arm assembly is high enough to clear the base stand during rotation. 
     In another embodiment, the present specification provides a collapsible cart and monitor stand that comprises multiple shelves for holding equipment related to endoscopes such as a main control unit, additional monitor screens, etc, along with their respective cords.  FIG. 5A  illustrates a collapsible cart type monitor stand  500  comprising a stand frame spine portion  502  having a top end and a bottom end, carrying a monitor  504  and provided with shelves  506  for holding equipment such as a main control unit. The stand frame spine portion  502  is coupled at a bottom end to a base stand  508  with wheels  510  for maneuvering the monitor stand  500  from one place to another. 
       FIG. 5B  illustrates the monitor stand  500  with one of the shelves removed. A main control unit  505  is supported by a small support shelf (not shown in the figure). In an embodiment, the dimensions of the support shelf are approximately the same as the dimensions of a base of the main control unit  505  such that the support shelf is not immediately visible when the main control unit  505  is placed on the same. 
       FIG. 5C  illustrates the monitor stand  500  in a dismantled state, in accordance with an embodiment of the present specification. The figure shows the stand frame spine portion  502 , shelves  506 , base stand  508  with wheels  510  and a monitor support member  512  dismantled and separated. The monitor support member  512  enables connection of a monitor panel with the monitor stand  500 . In an embodiment, the components of the fully dismantled monitor stand  500  are configured to fit in a cargo space measuring no greater than 68.9 cubit feet. 
       FIG. 5D  illustrates another view of the monitor stand  500 , in accordance with an embodiment of the present specification. A small support shelf  507  is provided to support a main control unit on the monitor stand  500 . In various embodiments, similarly to the shelves  506 , the support shelf  507  may be attached to the stand frame spine portion  502  at any location along the length of the stand frame spine portion  502 . The support shelf  507  may also be easily detached from the stand frame spine portion  502  as explained with reference to  FIG. 7 . In various embodiments, the support shelf  507  may be used to carry any other equipment. 
       FIG. 6A  illustrates a front view of a shelf  602  attached to a spine portion  604  of the collapsible cart type monitor stand in accordance with an embodiment of the present specification. In various embodiments, a shelf  602  is attached to a spine portion  604  of the monitor stand of the present specification by using brackets and spacers. The shelf  602  may be easily attached to the spine portion  604  without the use of any specialized tools.  FIG. 6B  illustrates a magnified view of the section A-A  606  marked on  FIG. 6A . As shown in  FIG. 6B , the shelf  602  comprises a hook shaped extension  608  that fits around a spacer  610  on the spine portion  604 . A knob  612  is provided to tighten the shelf  602  on the spine portion  604  in order to fix the position of the shelf  602 .  FIG. 6C  illustrates a magnified view of portion B  614  on  FIG. 6B . As shown in  FIG. 6C , a linear force  611  applied on the knob  612  (pushing the knob  612  in) is converted by means of a bracket nose surface  616  into torque  613  that is applied in a counter-clockwise direction around the spacer  610 , which acts as an axis for rotation of the shelf  602 , thereby locking the shelf  602  in a fixed position on the spine portion  604 . 
       FIG. 7A  illustrates a front view of a shelf  702  attached to a spine portion  704  of the monitor stand in accordance with an embodiment of the present specification. In various embodiments a shelf  702  is attached to a spine portion  704  of the monitor stand of the present specification by using brackets and spacers. The shelf  702  may be easily detached from the spine portion  704  without the use of any specialized tools.  FIG. 7B  illustrates a magnified view of the section A-A  706  marked on  FIG. 7A . As shown in  FIG. 7B , the shelf  702  may be removed from the spine portion  704  by removing a hook shaped extension  708  from around a spacer  710  on the spine portion  704 . A knob  712 , when pulled out, detaches the shelf  702  from the spine portion  704 .  FIG. 7C  illustrates a magnified view of portion B  714  on  FIG. 7B . As shown in  FIG. 7C , a linear force  711  applied in an outward direction on the knob  712  releases the knob  712  from the bracket nose surface  716 , allowing the shelf  702  to be rotated in a clockwise direction  715  around the spacer  710 , thereby loosening the shelf  702  around the spacer  710 . The hook shaped extension  708  can then be lifted off the spacer  710  and the shelf  702  can be removed from the cart. 
       FIG. 8A  illustrates a front view of a spine portion  802  of the monitor stand attached to a base stand  804 , in accordance with an embodiment of the present specification. In various embodiments, the monitor stand of the present specification comprises a spine portion  802  which may be attached as well as detached easily and quickly from a base stand  804  without the use of any specialized tools.  FIG. 8B  is a cross-sectional, magnified view of portion C-C  806  in  FIG. 8A .  FIG. 8C  is a magnified view of portion D  808  in  FIG. 8B . As shown in  FIG. 8C , a locking bushing  810  having a bushing shoulder  812 , a locking screw set  814 , a thread insert  816 , and a knob for tightening  818  are provided in order to enable a quick fastening/release of the base stand  804  from the spine portion  802 . 
     The knob  818  is threaded through a threaded insert  816  which is fixed to the base stand  804 . The threaded insert  816  enables the knob  818  to be rotated and moved backward and forward. The knob  818  is then threaded through the bushing  810  until the knob  818  reaches an end of the internal thread of the bushing  810 . Next, the bushing  810  and the knob  818  are locked together so that when the knob  818  rotates the bushing  810  rotates as well and moves backward and forward. The bushing  810  and the knob  818  are locked together by the locking screw set  814  inserted through the bushing  810  perpendicular to the knob  818  and touching a flat surface of the knob  818 . A user may lock the base stand  804  to the spine portion  802  by pressing the spine portion  802  against a wall of the base stand  804 , by rotating the knob  818  in a clockwise direction and moving the bushing  810  forward. The bushing shoulder  812  is used as a hard stop when the spine portion  802  is moved upwards or downwards as the bushing shoulder is located inside holes made in a wall of the spine portion  802 . 
     Hence, the present specification provides a monitor stand comprising at least a spine portion, a base stand and one or more shelves for supporting equipment. The parts of the monitor stand may be assembled easily by a user without the use of any specialized tools. Further, the monitor stand may also be dismantled easily by a user without the use of any specialized tools. The dimensions and weights of the various parts of the monitor stand enable the monitor stand to be quickly dismantled, and transported by using a small to medium sized vehicle. 
     The above examples are merely illustrative of the many applications of the system of present specification. Although only a few embodiments of the present invention have been described herein, it should be understood that the present invention might be embodied in many other specific forms without departing from the spirit or scope of the invention. Therefore, the present examples and embodiments are to be considered as illustrative and not restrictive.