Abstract:
The present invention relates to a lightweight and durable surgery table ( 1 ), which particularly facilitates performing spinal surgical operations, is transparent to radiographic rays and can be adjusted according to the position of the patient.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to a surgery table which enables to perform spine and spinal cord surgeries conveniently as well as surgeries in prone position. 
       BACKGROUND OF THE INVENTION 
       [0002]    The spinal cord is a component of the central nervous system located within the spine structure that is formed by the vertebrae. The structure of the spinal cord includes white matter containing myelinated nerve cells and gray matter containing nerve cell bodies and unmyelinated nerve cells. 
         [0003]    The spine, which has to adapt to a wide variety of movements due to the nature of the human body, may catch various diseases from these movements due to bacterial and/or virus-borne pathogens. A part of these diseases can be healed by drug. therapy; however a part thereof requires surgical operation. Operation of this structure, which starts from the brain and extends to the coccyx and accommodates the nerves therein, should be performed very meticulously; otherwise, since regeneration of damaged nerves is not possible, permanent disabilities may occur. Performing the operation precisely depends on the competence and carefulness of the doctor and the adequacy and quality of the equipments s/he uses. In the spine surgeries, it is important that the patient is positioned so as to allow the doctor to easily reach the part that s/he will operate. 
         [0004]    In the state of the, there are surgery tables Which enable to keep the patient in the suitable position; however these tables are not useful because they are heavy difficult to be adjusted according to the patients body and expensive because carbon fiber is used for them to be radio-opaque. 
         [0005]    United States Patent document no U.S. Pat. No. 5,131,106, an application known in the state of the art, discloses a type of spinal surgery table. 
         [0006]    United States Patent document no U.S. Pat. No. 6,154,901, an application known in the state of the art, discloses a spinal surgery table. 
         [0007]    United States Patent document no U.S. Pat. No. 5,239,716, an application known in the state of the art, discloses a surgery table with a spinal positioning frame mounted thereon. 
         [0008]    International patent document no. WO0044329, an application known in the state of the art, discloses a surgery table designed for operating a patient in prone position and for using in spinal surgical operations. 
         [0009]    European Patent document no. EP0389188, an application known in the state of the art discloses an adjustable patient support which is particularly useful in spinal surgery. 
       SUMMARY OF THE INVENTION 
       [0010]    An objective of the present invention is to provide a surgery table which facilitates performing spinal operations. 
         [0011]    Another objective of the present invention is to provide a. surgery table which is transparent to radiographic rays. 
         [0012]    A further objective of the present invention is to provide a surgery table which can be adjusted according to the position of the patient. 
         [0013]    Another objective of the present invention is to provide a lightweight and durable surgery table. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]    The surgery table developed to fulfill the objectives of the present invention is illustrated in the accompanying figures, in which: 
           [0015]      FIG. 1  is the perspective view of the inventive surgery table. 
           [0016]      FIG. 2  is the top view of the inventive surgery table. 
           [0017]      FIG. 3  is the side view of the inventive surgery table. 
           [0018]      FIG. 4  is the perspective view of the spacer. 
           [0019]      FIG. 5  is the top view of the extender. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0020]    The components shown in the figures are assigned reference numbers as follows: 
         [0021]      1 . Surgery table 
         [0022]      2 . Carrier 
         [0023]      21 . Transmission part 
         [0024]      3 . Moveable part 
         [0025]      4 . Body 
         [0026]      5 . Spacer 
         [0027]      51 . Worm gear 
         [0028]      6 . Spacer lever 
         [0029]      7 . Extender 
         [0030]      71 . Worm gear 
         [0031]      72 . Bevel gear 
         [0032]      73 . Shall 
         [0033]      74 . Bearing 
         [0034]      8 . Extender lever 
         [0035]      9 . Wheel 
         [0036]      10 . Support 
         [0037]    The surgery table ( 1 ) of the present invention basically comprises
       at least two carriers ( 2 ), on which the patient lies down, and each of which includes at least one transmission part ( 21 ) thereon for power transmission,   at least one moveable part ( 3 ) to which one side of the carrier ( 2 ) is connected and which, by moving, enables elongation and shortening of the carrier ( 2 ),   at least one body ( 4 ) to which the side of the carrier ( 2 ) that is not connected to the moveable pail ( 3 ) is connected, and on which the moveable part ( 3 ) can move,   at least two spacers ( 5 ), which enable to change the distance between the carriers ( 2 ), comprise at least one worm gear ( 51 ) that enables power transmission to the transmission parts ( 21 ) of the carriers ( 2 ) and which are preferably provided such that there will be at least one spacer at the side where the carriers ( 2 ) are connected to the body ( 4  and at least one spacer at the side where the carriers ( 2 ) are connected to the moveable part ( 3 ),   at least two spacer levers ( 6 ) which enable the spacers ( 5 ) to be controlled by the user,   at least one extender ( 7 ); which enables the carriers ( 2 ) to be elongated and shortened by moving the moveable part ( 3 ); and which comprises at least two worm gears ( 71 ), which are preferably close to the two sides of the moveable part ( 3 ) in order to move the moveable part ( 3 ) properly and each of which includes a bevel gear ( 72 ) on the end thereof; a shaft ( 73 ) which enables these worm gears ( 71 ) to transmit power to each other and which includes bevel gears ( 72 ) on both ends thereof that correspond to the bevels gears ( 72 ) located at the ends of the worm gears ( 71 ); and at least one bearing ( 74 ) which enables the shaft ( 73 ) to remain fixed during rotation,   at least one extender lever ( 8 ) which enables the extender ( 7 ) to be controlled by the user.       
 
         [0045]    In the preferred embodiment of the invention, the inventive surgery table ( 1 ) comprises at least two carriers ( 2 ) on which the patient lies down. One side of each of the said carriers ( 2 ) is connected to the moveable part ( 3 ) by means of the transmission part ( 21 ). Movement of the moveable part ( 3 ) enables elongation and shortening of these carriers ( 2 ). Additionally; movement of the moveable part ( 3 ) enables to increase or decrease the radius of the arc of circumference formed by these carriers ( 2 ). This way the patient can be positioned suitably for the surgery. The other side of the carrier ( 2 ) is connected again via the transmission part ( 21 ) to the worm gear ( 51 ) of the spacer ( 5 ) located on the body ( 4 ). Besides, the moveable part ( 3 ) can move on this body ( 4 ) in the direction that the carriers ( 2 ) extend. It should be possible to adjust the distance between the carriers ( 2 ) in order to adjust the position of the patient. For this purpose, there are provided at least two spacers (which enable to change the distance between the carriers ( 2 ) on the parts of the body ( 4 ) where each end of the carriers ( 2 ) is located. There is a worm gear ( 51 ) provided on the spacer ( 5 ) for changing the distance between the carriers ( 2 ). The grooves, which are provided on the parts of these worn gears ( 51 ) that are below each carrier (are opposite to each other so as to enable the carriers ( 2 ) to move towards or away from each other. These worm gears ( 51 ) are connected to the carriers ( 2 ) via the transmission part ( 21 ) of the carriers ( 2 ). This transmission part ( 21 ) has a hollow through which the spacer ( 5 ) can pass. This hollow includes threads that correspond to the threads of the worm gear ( 51 ). The user controls each spacer ( 5 ) by means of the spacer lever ( 6 ) thereof. Elongation and shortening of the carriers ( 2 ) is enabled by the movement of the moveable part ( 3 ). When the user rotates the extender lever ( 8 ), this rotational movement is transferred to the worm gear ( 71 ) having, a bevel gear ( 72 ) at the end thereof. This rotational movement elongates or shortens the carrier ( 2 ) which is in contact with the worm gear ( 71 ). In order to elongate or shorten the other carrier ( 2 ) the same way, this rotational movement should be transferred to the other worm gear ( 71 ). The shaft ( 73 ), haying a bevel gear ( 72 ) on each end thereof, is positioned between the worm gears ( 71 ) that are in contact with both of the carriers( 2 ). The shaft ( 73 ) is positioned such that the bevel gears ( 72 ) provided at the ends thereof contact the bevel gears ( 72 ) provided at the ends of the worm gears ( 71 ). This way, the force applied by the extender level ( 8 ) is transferred to both worm gears ( 71 ) and thus both of the carriers ( 2 ) are enabled to be elongated and shortened at the same time. 
         [0046]    In one embodiment of the invention, the moveable part ( 3 ) has at least one wheel which facilitates its movement on the body ( 4 ). 
         [0047]    In one embodiment of the invention, there is a support ( 10 ) provided on the body ( 4 ) for supporting the worm gear ( 51 ). 
         [0048]    In the preferred embodiment of the invention, all of the parts are made of plastic material. This way, the surgery table ( 1 ) is sturdy and radio-opaque. 
         [0049]    It is possible to develop various embodiments of the surgery table ( 1 ) of the present invention. The invention cannot be limited to the examples described herein and it is essentially as defined in the claims.