Patent Document

CROSS REFERENCE TO RELATED APPLICATION 
       [0001]    This application is a continuation of prior U.S. patent application Ser. No. 14/102,796, filed on Dec. 11, 2013, which claims the benefit of U.S. Provisional Patent Application Ser. No. 61/879,668 filed on Sep. 18, 2013, which are hereby incorporated by reference in their entirety. 
     
    
     FIELD OF INVENTION 
       [0002]    The current invention is directed to the field of Laparoscopic devices, particularly to a Laparoscopic Visualization System, used in minimally invasive surgery and other medical procedures. More particularly, the present invention relates to a significantly improved sterile, compact, disposable apparatus used for heating, applying anti-fog solution to, and protecting of the surgical scope distal lens prior to and during a surgical procedure. 
       BACKGROUND OF INVENTION 
       [0003]    This invention generally relates to a device and system for heating sterile liquid solutions prior to and during medical procedures for producing optimum Laparoscopic visualization. 
         [0004]    Laparoscopic surgery sometimes called keyhole or “Minimally Invasive Surgery” (MIS), is a relatively new type of surgery that involves the introduction of small incisions in a patient, (usually between 0.5 and 1.5 cm) whereby access to the thoracic, abdominal or pelvic cavities is obtained by the use of a medical device called a trocar. 
         [0005]    Prior to starting a surgical procedure a small incision is performed on the patient whereby a trocar is inserted around the periphery of the incision. The trocar is then replaced with a cannula, device that allows insertion of medical devices. An insufflator also referred to as a pump, is used to inflate the cavity area with carbon dioxide thus providing a means of viewing and creating space for the surgeon to perform the medical procedure. A special medical device called a laparoscope is subsequently inserted through the cannula whereby the surgeon initially looks inside the cavity area in question and determines the best approach for performing the medical procedure. 
         [0006]    The invention of high resolution image processing devices has revolutionized laparoscopic surgery. When laparoscopic surgery is performed surgeons have the option of using either a telescopic rod lens system (TRLS) which is a rigid device connected to a high resolution image processing device or a digital laparoscope which uses a charge coupled device. A charged couple device or CCD is often used in image processing devices. Its advantage is that it is small, and compact. It captures images based on the strength of the electric charge received from an image. The stronger the source of received light, the stronger the electric charge created. This electronic information is then transferred electrically to a processing device that converts the received signal to a pixel intensity, thus creating a smooth image screen. The advantage in using this system is that it is very small and flexible thus providing maneuvering room for the surgeon to look into small, difficult to reach areas. 
         [0007]    Prior to the invention of Laparoscopic surgery, patients were subject to major invasive procedures, which increased pain, scaring, hemorrhaging, trauma, complications and long recovery times. Through the use of small incisions most of these setbacks have been minimized. The modern use of imaging devices has opened up a window for surgeons to safely view the inside cavities of a person and perform many types of surgeries. 
         [0008]    The biggest problem surgeons face with Laparoscopic procedures is being able to see clearly once they are inside a cavity, such as the abdomen of their patient. Clouding is a problem that occurs, caused by contact of the distal lens with body fluids, burnt tissue and other debris, making it difficult for the surgeon to see clearly. 
         [0009]    Therein lies the problem. Thus there exists in the industry a need for a Laparoscopic Visualization System that is easy to use, and provides exceptional clarity. There are bulky devices in the industry for cleaning the lenses of Laparoscopes but they are not practical. Some surgeons have been known to place their Laparoscopes into a warm bucket of distilled water and dunk it every time cleaning is needed. In some countries this procedure has been banned. The present invention overcomes these problems by providing a Laparoscopic Visualization System that is efficient and well suited for quick and dependable usage. 
       SUMMARY OF INVENTION 
       [0010]    The following patents are incorporated in their entirety by reference: U.S. Pat. No. 7,080,641 B2, a Method and Apparatus for Heating Sterile Solutions during Medical Procedures, U.S. Pat. No. 7,311,660 B2, a Method and apparatus for Heating and Applying Warm Anti-fog Solution to Endoscopes As Well As Distal Lens Protector, U.S. Pat. No. 7,803,109 B2, Method and Apparatus for Protecting Distal Lens of Endoscopes, and U.S. Pat. No. 8,152,717 B2, a Device for White Balancing and Applying An Antifog Agent to Medical Videoscopes prior to Medical Procedures. 
         [0011]    The current application is directed toward a Laparoscopic Visualization System used in the cleaning of lenses of Laparoscopes/Endoscopes by applying a warm anti-fog solution to the distal lens of the device. The anti-fog solution is quickly and efficiently heated and maintained at body temperature to minimize fogging. The system also protects the distal lens. The Laparoscopic Visualization System also has the additional function of providing a means of white balancing. 
         [0012]    Significant improvements have been made to the following elements of the Laparoscopic Visualization System. Among them are: a significantly improved heating element or coil, an ergonomic inner frame, an improved thermoswitch which maintains a more stable temperature within the device, an improved power source, a more efficient heating circuit, an efficient low consumption indicator, an efficient printed circuit board, an efficient can assembly, a specialized reducer and an improved valve assembly. These significant changes have dramatically reduced human error and significantly improved control and efficiency of the device. 
         [0013]    The present invention discloses an apparatus that combines the benefits of both heat and anti-fog solution, providing superior anti-fogging during the entire surgical procedure. The apparatus is compact and designed to be placed over the distal lens prior to and during a medical procedure. By allowing the lens to bathe in the warm anti-fogging solution, as opposed to just wiping it in the solution, the effectiveness of the anti-fogging solution is greatly increased. The apparatus includes a solid foam outer shell with an interior divided into several compartments. A reservoir in the center of the apparatus is filled with an anti-fog solution of a surfactant in water. The Laparoscopic Visualization System is found useful when a distal end of a surgical instrument is inserted through a self-sealing valve of the system, and is submerged within the anti-fog solution within the receptacle. The instrument is simultaneously heated and bathed in the warm surfactant solution in water. The hard frame and soft interior of the can assembly create a protective barrier around the delicate instrument&#39;s distal end. When not in use, the scope can rest inside the Laparoscopic Visualization System, protecting the scope from damage potentially caused by other instruments and trays. Protecting the scope is a very beneficial attribute since scopes are very expensive and are frequently scratched or damaged during procedures, costing hospitals a great deal of money. By heating the solution and the instrument, the significant temperature difference between the interior of the body (98.6.degree. F.) and the room temperature of the instrument are eliminated. This temperature normalization inhibits the condensation of moisture, which occurs upon inserting the cool scope into a warm body cavity. By combining heat with the use of an anti-fogging solution, fogging is prevented from occurring at insertion and during cauterization procedures when smoke and heat are generated within the body cavity. 
         [0014]    The main power source may be either an internal or external type. A sterile self-contained battery source is the preferred embodiment. In the preferred embodiment a power supply consisting of three (3) AA batteries, are used and secured into a battery pack. Among the advantages of using batteries are their cost effectiveness and efficiency. By removing the bottom cover and pulling out the battery pack, the batteries can be disposed of in a safe and environmentally friendly manner. The advantage of using an internal battery configuration is that it provides a self-contained sterile environment facilitating its introduction into the operating room. Any typical battery can be used such as NiCad, Lithium, and Alkaline. In another embodiment an external AC (plugged) power source may be used. Among its advantages is that it is cost effective for maintenance over longer periods of time. In the ideal embodiment, the battery source should last as long as the surgery, a minimum of 1 hour and in the preferred embodiment, 4-6 hours. The battery configuration is easier for the user to employ, because the batteries are pre-installed and already in a sterile environment. As a means of holding the batteries together they can be spot welded together or into a battery holder. The advantage of spot welding is that it provides a means of securely holding the batteries together and making the connections more stable and permanent; the disadvantage is that it increases manufacturing time. In another embodiment custom batteries can also be used. Once the procedure is completed the Laparoscopic Visualization System can be safely disposed of. The batteries may also be pulled out from the bottom and properly disposed of 
         [0015]    In the present invention basic circuitry, there is a power source connected to an On/Off switch. The On/Off switch is connected in series with a parallel circuit consisting of a first path having a heating coil in series with a thermoswitch and a secondary path consisting of a resistor in series with a light emitting diode (LED). The integrated circuitry is located on a printed circuit board (PCB). The components can also be individually assembled and connected without the use of a PCB. The PCB is part of the mechanical assembly used to form the Laparoscopic Visualization System shape. The main advantage of the printed circuit board is its reduced wiring and compact circuitry. This circuitry design has been found to be the most effective for the present invention. This simplified construction reduces human error and failure by compartmentalizing individual parts into pre-assembled sub-assemblies. 
         [0016]    A blue LED is used for indication. The wavelength of the blue LED is in the range of 400 nm which is among the most energetic. Since an LED produces light in a narrow band of wavelengths phosphors are sometimes used to improve the spectrum of the light produced. It is also possible to combine several different LEDs, each producing a different wavelength to indicate different stages of the battery cycle such as when the level of power is decreasing. 
         [0017]    The Laparoscopic Visualization System provides optimum visualization during laparoscopic or robotic surgery. The Laparoscopic Visualization System is used to keep the lens defogged and clean from the opening of an operation through its close. Additionally it provides a true white balancing feature for better resolution. When the Laparoscopic Visualization System is activated and affixed to the patient&#39;s drape the Laparoscope is easily defogged and can be cleaned numerous times with the use of just one hand in as little as 5 seconds providing optimum visualization for surgery from opening to close. Most importantly the Laparoscopic Visualization System provides an innovation that helps provide improved patient care. 
         [0018]    The Laparoscopic Visualization System works in the following manner. The compact unit is affixed to a patient&#39;s drape allowing quick access to the defogging/cleaning system using only one hand. In just 5 minutes, the anti-fogging solution warms to approximately 120.degree. F. to warm the endoscopic camera distal lens. The liquid quickly breaks down fats and tissue debris adhered to the lens. The Laparoscopic Visualization System is compatible with laparoscopes from 5 mm to 12 mm in diameter. The liquid is maintained warm for up to 6 hours. The Laparoscopic Visualization System can also provide true white balancing for better color visualization needed in Laparoscopic surgery. A microfiber pad included with the unit is used to remove tissue remnants without scratching or smudging the valuable laparoscope or robotic lenses. Two soft Micropad.RTM. towels can be provided in the form of a kit to help remove any persistent tissue remnants on the lens of the surgical device without leaving lint or smudging. The Micropad.RTM. towels are used to replace the use of coarse surgical gauzes which are harder on the lens. The Micropad.RTM. towels are also radio opaque helping to find them in the unlikely event they are ever left inside a patient. A TrocarWipe.TM. elongated cleaner is included in the kit to help clean the inside of the trocar/cannula. As mentioned earlier when not in use the laparoscope can be placed on standby inside the Laparoscopic Visualization System, maintaining cleanliness and protecting the lens. This positioning inside the Laparoscopic Visualization System prevents accidental burning of the patient caused by the high temperature created by the Laparoscope tip. The Laparoscopic Visualization System is the only system that keeps laparoscopes defogged and cleaned from start to close. 
         [0019]    In another embodiment a cloth like material is placed inside the Top Valve Cover to absorb any liquid that may leak out of the Inner Assembly. This cloth like absorbent material can take a shape similar to the inside of the foam body. 
         [0020]    An additional feature of the Laparoscopic Visualization System is its ability to absorb heat generated by the high intensity laparoscopic light source. When not in use, placing the laparoscope inside the heated can assembly reduces the possibility of small fires and patient burns caused by the high performance light source resting on the paper drapes or patient. 
         [0021]    There is a need in the field for a reliable, efficient Laparoscopic Visualization System. The present invention overcomes the deficiencies of the known art and the problems that remain unsolved by providing a method and apparatus for efficiently heating and cleaning laparoscopic devices in a sterile environment. 
         [0022]    These and other aspects, features and advantages of the present invention will become more readily apparent from the attached drawings and the detailed description of the preferred embodiments, which follow. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0023]    The preferred embodiments of the invention will hereinafter be described in conjunction with the appended drawings provided to illustrate and not to limit the invention, in which: 
           [0024]      FIG. 1  presents an isometric view of the Inner Assembly of the Laparoscopic Visualization System. 
           [0025]      FIG. 2  presents an exploded Perspective view of the Laparoscopic Visualization System. 
           [0026]      FIG. 3  presents an exploded Isometric view of the Laparoscopic Visualization System Inner Assembly. 
           [0027]      FIG. 4  presents a top view of the Laparoscopic Visualization System Inner Assembly. 
           [0028]      FIG. 5  presents a Perspective view of the Top Cap Assembly. 
           [0029]      FIG. 6A  presents a Top view of the Laparoscopic Insertion Valve. 
           [0030]      FIG. 6B  presents a Side Isometric view of the Laparoscopic Insertion Valve. 
           [0031]      FIG. 6C  presents a Cross Sectional view through the Laparoscopic insertion 
           [0032]    Valve. 
           [0033]      FIG. 7A  presents a Top view of the Laparoscopic Leakage Reducer. 
           [0034]      FIG. 7B  presents a Side Perspective view of the Laparoscopic Leakage Reducer. 
           [0035]      FIG. 7C  presents a Top view of the Laparoscopic Leakage Reducer. 
           [0036]      FIG. 8A  presents a Backside Isometric view of the Laparoscopic Visualization System Inner Assembly. 
           [0037]      FIG. 8B  presents a Side view of the Laparoscopic Visualization System PCB. 
           [0038]      FIG. 8C  presents a Front view of the Laparoscopic Visualization System PCB showing its components. 
           [0039]      FIG. 9A  presents a Side Perspective view of the Laparoscopic Visualization System Body Assembly. 
           [0040]      FIG. 9B  presents a Top Perspective view of the Laparoscopic Visualization System Body Assembly. 
           [0041]      FIG. 9C , presents a Bottom Isometric view of the Laparoscopic Visualization System Body Assembly. 
           [0042]      FIG. 10  presents a Perspective view of the Bottom Cover Assembly. 
           [0043]      FIG. 11  presents an Electrical schematic of the preferred embodiment. 
           [0044]      FIG. 12  presents a graph showing temperature variations with both insulated and uninsulated thermo switches of the System. 
       
    
    
       [0045]    Like reference numerals refer to like parts throughout the several views of the drawings. 
       DETAILED DESCRIPTION 
       [0046]    The following detailed description is merely exemplary in nature and is not intended to limit the described embodiments or the application and uses of the described embodiments. As used herein, the word “exemplary” or “illustrative” means “serving as an example, instance, or illustration,” Any implementation described herein as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations. All of the implementations described below are exemplary implementations provided to enable persons skilled in the art to make or use the embodiments of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims. For purposes of description herein, the terms “upper”, “lower”, “left”, “rear”, “right”, “front”, “vertical”, “horizontal”, and derivatives thereof shall relate to the invention as oriented in  FIG. 1 . Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification, are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise 
         [0047]    The Laparoscopic Visualization System or device  10   FIG. 1  comprises an outer shell  200   FIG. 2  made of a soft foam, rubber, or other shock absorbing material. Not only is the material of the shell shock absorbing, but it serves as a thermal insulator as well, helpful not only in maintaining the temperature of the structures therewithin but also keeping heat from escaping from within the shell. The shell  200  is designed to protect a distal lens of a laparoscope or other scope (not shown) from damage prior to, during, and after a surgical procedure. 
         [0048]    Interior major components of the Laparoscopic Visualization System  10  are illustrated in their assembled manner in  FIG. 1 . The primary assembly is called the Inner Assembly. It encompasses all the major elements of the Laparoscopic Visualization System  10 . An indicator  105  is always used for differentiating when the device is on or off. In the preferred embodiment the Laparoscopic Visualization System  10  uses a blue emitting LED  105 , as the indicator. Blue is the preferred color because it is easily seen in the operating room. White is not the preferred LED color choice because it is not always readily visible. Among the many advantages of using an LED  105  as the main indicator, are its low cost, low and efficient power consumption, its resistance to vibration and shock damage, its low heat generation, its insensitivity to lower temperatures such as in an operating room, its ability to be unaffected by on/off cycling and its long life cycle. The LED  105  may also serve to warn when the batteries are becoming weak by flashing intermittently. In a further embodiment it is possible to have several LEDs  105  or one multifunctional LED  105 , as the indicator  105 . In a different embodiment (not shown) a small light bulb or temperature change color sticker can be used. 
         [0049]    A printed circuit board (PCB)  125  is used for containing all operating circuitry for the assembly  10  and a resistor  110  is incorporated into the PCB  125  and has a resistance of between 10 and 1000 ohms. One of the purposes of the resistor  110  is to control the current passing through the LED  105 , which in turn controls the brightness of the LED  105 . Another factor affecting the brightness of the LED  105  is the length of Heating Coil  145 . By extending the length of the Heating Coil  145 , the resistance increases thus increasing the current going to the LED. The resistors  110  value must also be changed in order to maintain the same brightness to the LED  105 . As the length of heating coil  145  is extended, power production drops. This is demonstrated by applying Ohms law E=I X R, where the voltage E remains constant in a parallel circuit. By increasing the length of the heating coil  145 , the resistance increases, causing the branch current to decrease. This affects the brightness of the LED  105  in the adjacent parallel circuit. As the coil  145  resistance increases the current in the adjacent parallel circuit also increases causing the LED  105  to become brighter. A resistor in series with the LED helps to control the brightness. By applying the power formula P=V.sup.2/R, it is clearly demonstrated why less power is produced in this branch. In another embodiment, no resistor or LED is used. 
         [0050]    One of the major advances in the present Laparoscopic Visualization System  10  is the arrangement and location of a Thermoswitch  115 . Through empirical testing and analysis, it has been determined that the most efficient and stable temperature control of the anti-fog solution is achieved when the Thermoswitch  115  is positioned as shown in  FIG. 3  directly over the Heating Coil  145 , and just below the level of the liquid (most preferably water containing a surfactant for convenience referred to as surfactant  190 ). The Laparoscopic Visualization System  10  is maintained between 50-70.degree. C. (122-158.degree. F.). Functionality determines the temperature range selected; Le, defogging, cleaning, etc. Outstanding results were ultimately obtained by providing a wrapping material  116  in the form of a pellicle that serves as a compression cuff for pressing the thermoswitch  115  into close physical and thermal transfer relationship with both the can assembly  150  and the heating element  145 . The wrapping material  116  has four primary functions: It stabilizes the thermoswitch  115 ; element  145  and can assembly  150  against shock and vibration; it holds the thermoswitch  115  in heat transfer relationship with both the element  145  and the fluid in the can assembly  150 ; it acts as a thermal insulator by reducing heat loss; and finally it secures the thermal transfer switch  115 , coil  145  and can assembly  150  together as a unit. In a preferred form, the wrapping material  116  is a pellicle of heat shrink plastic such as any suitable grade of thermoplastic heat shrink resin in the form of a circular band about 11/4 inches in diameter which after being slipped over the can assembly  150  and thermoswitch  115  is warmed with a heat gun until it shrinks sufficiently to tightly compress the thermoswitch  115  securely and in thermal transfer relationship with the coil and can assembly  150 . We prefer to use a heat shrink pellicle that has a thickness of at least about 0.005 inch since it was found to also be effective as a thermal insulator in enhancing the temperature stability of the thermoswitch  115  while at the same time maintaining efficient heat transfer from the fluid and coil  145  to the thermoswitch thereby improving overall thermal efficiency of the complete system as described more fully in connection with  FIG. 12  thereby substantially prolonging battery life. The ideal temperature range for the Laparoscopic Visualization System  10  will depend on several factors, among them are the length of heating coil  145 , the location of the heating coil  145 , and the amount of heat wrapping material  116  covering the Thermoswitch  115 . When wrapping material  116  is used in accordance with the present invention, outstanding temperature stability is achieved, as demonstrated in the chart of  FIG. 12 . The two saw tooth lines show temperature variations where no insulation surrounds the Thermoswitch  115 . In contrast the narrow edged lines indicate a stable better controlled temperature variation. Single or double insulation can be used for covering the Thermoswitch  115 . 
         [0051]    In the preferred embodiment, there is minimal insulation between the Thermoswitch  115 , and Heating Can Assembly  150 , resulting in better heat transference to the antifog solution inside the Heating Can Assembly  150  from the heating coil  145  coiled there around. In the preferred embodiment, Thermoswitch  115  is a mechanical type switch. The configuration of the Main Framework  140  may require the Thermoswitch  115  to be off center. The Main Framework  140  is specially designed, sized and configured to provide a means of securely attaching and holding all the components in the correct orientation. The Thermoswitch  115  may be in the form of a temperature sensor made of bi-metallic material or a thermocouple temperature sensing device in an IC or microcontroller. It may also be any heating resistive mechanism. In the preferred embodiment, a bimetallic strip type Thermoswitch  115  is used. 
         [0052]    The bimetallic strip type Thermoswitch  115  is used to convert a temperature change into a mechanical displacement. The bimetallic strip type Thermoswitch  115  comprises two pieces of different metals which expand at different rates as they are heated. The bimetallic strip type Thermoswitch  115  can be made of steel and copper, or in some cases steel and brass, joined together throughout their lengths by riveting, brazing or welding. The different expansion rates force the flat strip to bend in one direction when heated, and in the opposite direction when cooled below the initial temperature. The metal with the higher coefficient of thermal expansion is usually placed on the outer side of a curve so that when the Thermoswitch  115  is heated, it displaces further. 
         [0053]    Moving the heating coil  145 , up or down the along a length of the heating can assembly  150  affects the ultimate temperature the antifog solution reaches. The Thermoswitch  115  is designed to open and close at pre-determined temperatures. If the Thermoswitch  115  is situated away from the heating coil  145  and the heating coil  145  is not positioned at or below the level of the antifog solution  190 , more power will have to be generated by Power Source  205  of  FIG. 2 , to cause the Thermoswitch  115  to reach the desired cut off temperature. This explains why the orientation of the Thermoswitch  115  is so critical and why having it in the proper location significantly extends the useful life of the Laparoscopic Visualization System  10 . The most important features of the Thermoswitch  115  are its quick temperature response time and self-resetting characteristics. 
         [0054]      FIG. 1  also shows pin connectors  120  which connect the Heating Coil  145  to the PCB  125 , completing the circuit. The improved simple connection allows quick assembly and significantly reduces the amount of human error during assembly. The Heating Coil  145  is preferably a 35 gauge copper enamel coated wire; copper being preferred. Nichrome can also be used, but in general any wire capable of conducting current, or any resistive heating element can also be used. The length of the heating coil  145  can be between 5-14 feet. In the preferred embodiment, the length is between 7-11 feet. This length provides the best balance and most efficient means to quickly reach the desired warming temperature. In order to provide the most efficient transfer of heat, the Heating Coil  145  needs to be tightly coiled in a single layer along the outside of Heated Can Assembly  150 . By not using a multilayered winding, hot spots and shorting of the heating coil  145  are avoided. Each loop of coil  145  must be adjacent to and in contact with the next to generate an even, controlled amount of heat. The Heating Coil  145  is engaged through an On/Off switch  130  which is actuated through a lever  142  connected to an elongated side arm  148 , actuated by a button  950  of  FIG. 9B , on outer shell  200 . The user just needs to depress the button  950  and the On/Off switch  130  will turn on the device  10 , will turn on the LED indicator  105 , and begin warming the Heating Coil  145 . The main connection from Power Source  205  to the On/Off switch  130  is made through a connector  191 ,  FIG. 2  on Printed Circuit Board  125  of  FIG. 1 . The lever  142 , if necessary, may also be actuated by pushing upwardly thereon from below, within the shell  200  to turn the Laparoscopic Visualization System  10  off 
         [0055]    An improved Main Framework  140  of  FIG. 3  is used to support the integrated parts comprising the Inner Assembly  100 . The Inner Assembly  100  integrates the Printed Circuit Board  125 , the Heating Can Assembly  150 , and Beveled Valve Cap  160  and the lever  142  on the main framework  140 , as well as for allowing positioning of the wrapping material to heating coil  145  within its confines. 
         [0056]      FIG. 2  provides an exploded view of the internal elements of the Laparoscopic Visualization System  10  within shell  200 . The plastic or ceramic beveled Valve Cap  160  is used to lock the Insertion Valve  170  in place and can be held in place by gluing, applying wrapping material or any other industry standard method. A cup  180 , made of a firm yet flexible material, such as a foam, for example, is seated within a base area of the heating can assembly  150  and is used to protect the distal lens of a Laparoscope from damage and scratching when inserted. An extra feature of the cup  180  is that it can also be used for white balancing. The cup  180  may also be made of rubber, cloth, sponge or felt materials. 
         [0057]    The main framework  140  holds the key elements of the Laparoscopic Visualization System  10 . When the On/Off Button  950  of  FIG. 9A  is depressed, lever  142  which mechanically engages and moves an elongated sidearm  148  in functional communication with the internal On/Off switch  130  turning it on, thus activating the Laparoscopic Visualization System  10 . A Battery Holder  195  is used to hold three AA batteries  205 , forming power source  205 , in place. Battery Holder  195  provides power to the Assembly  10 , through power connector  191 . An optional battery Pull Tab  210  of  FIG. 2  is used to provide a means of extracting the batteries. The Laparoscopic Visualization System shell  200  is covered along the bottom with a Bottom Cover Assembly  900 . The Laparoscopic Visualization System Bottom Cover assembly  900  has the option of having an adhesive Strip  905  to secure the Laparoscopic Visualization System shell  200 , to the patient or an anchoring site. The Laparoscopic Visualization System shell  200  engages an external Laparoscopic Reducer  980   FIG. 2 . This reducer can also be custom sized to fit custom made laparoscopes. 
         [0058]    The framework  140  includes top and bottom slots  201  of  FIG. 1 , which engage around the lever  142  in a manner where it is slideable between an up (off) position and a down (on) position, relative to an actuator  202  of the on/off switch  130  which engages within a slot  203  formed in side arm  148  of the lever  142 . 
         [0059]    In the preferred embodiment the Laparoscopic Visualization System  10  of  FIG. 2  uses surfactant  190  in the form of a sterile fluid  190 , however sterile water, sterile saline, or any sterile anti-fog solution may also be used. In the preferred embodiment, 5 ml of liquid  190  is reserved in the canister  150 . Evaporation of the liquid  190  in the canister  150  is not a concern because of the enclosed environment within canister  150 . Another important consideration is that the surfactant  190 , with respect to the orientation of the heating coil  145 , must be such that heat can transfer effectively, including when the canister  150  is in a horizontal position. It will be understood that the duckbill valve  174  in inset, along a top level of the liquid  190  so that, when placed on its side, the main volume of the liquid remains within a small area beneath the duckbill valve  174  and in contact with the heating coil  145  to maintain the temperature thereof as constant as possible. 
         [0060]      FIG. 3  illustrates a detailed internal view of key elements of Inner Assembly  100 . The beveled Valve Cap  160  holds the Laparoscopic Insertion Valve  170  in place over the entrance to the Heated Can Assembly  150 , with the Printed Circuit Board  125  the Heating Coil  145  being mounted to the Main Framework  140  as well, forming the inner assembly  100 . 
         [0061]    The Inner Assembly  100  of  FIG. 3  includes beveled Valve Cap  160  which is held in place by at least two Valve Cap Elongated Prongs  155 . The Prongs  155  are slightly offset, allowing the beveled Valve Cap  160  to securely lock into place over an entrance to heating can assembly  150  formed by a flexible insertion Valve  170 , which is used to guide a laparoscope into heating can assembly  150 . At least one Insertion Valve Expansion Orifice  172  is provided along an inner periphery of the insertion valve  170  to compensate for the different diameters of Laparoscopes used. The at least one insertion Valve Expansion Orifice  172  also permits air to escape from the Heated Can Assembly  150  upon insertion of a laparoscope. 
         [0062]    The Heating Can Assembly  150  in its preferred embodiment is made of stainless steel. It is constructed of a biocompatible material and is inexpensive to produce. In other embodiments it can be made of Plastic, Aluminum, Ceramic or a combination thereof or of other metals that have excellent heat conductivity. The thickness of the Heated Can Assembly  150  is an important consideration because it determines the heating properties. The thickness of the Heated Can Assembly  150  can be between 0.1 to 0.75 mm. In  FIG. 3  top  161  of the Heating Can Assembly  150  is slightly flared allowing the beveled Valve Cap  160  to have a tighter and better fit when secured thereon. 
         [0063]    The Insertion Valve  170  includes several important qualities. Among them are its construction, being made of a flexible rubber or plastic material that permits instruments whose diameters are between 2-12 mm to be inserted snugly, thus permitting only minimal leakage. The Laparoscopic Insertion Valve  170  must be designed to allow easy passage of other medical devices, and it is self-sealing once the medical devices are removed. In the preferred embodiment the Laparoscopic Insertion Valve  170  helps to control pressure in the heating can assembly  150 , which can be accomplished by any suitable means, such as by the provision of a compressible bladder  500  of  FIG. 6B , or a one way venting or duckbill valve  174 . 
         [0064]      FIG. 4  illustrates a top view of Inner Assembly  100 . The beveled Valve Cap  160  has at least one cut away recess  196  that is better seen in  FIG. 3 . Recess  196  permits the LED  105  to fit closely to the Valve Cap  160 . The cut away recess  196  also reduces the overall size of the Inner Assembly  100 . How the PCB  125  mechanically engages the Main Framework  140  is also illustrated.  FIG. 4  shows the symmetry and ergonometry of the beveled Valve Cap  160  with respect to the Main Framework  140 . Insertion Valve  170  further includes a normally closed duckbill or one way venting valve  174  comprising two mating flexible sections  175 , the mating edges  176  of which is closed when nothing is inserted into the heating can  150 , the duckbill valve  174  being spaced downwardly from the beveled cap  160 , at a position just above the level which liquid  190  reaches, the duckbill valve  174  being in a normally closed position. 
         [0065]      FIG. 5  Illustrates a Perspective view of the beveled Cap Assembly  160 . A smooth Beveled Valve Cap Opening  165  is used to help guide the laparoscope into the Heated Can Assembly  150 . A side wall  167  of the Valve Cap  160  is designed so that its height is sufficient to provide a secure fit over the Insertion Valve  170  of  FIG. 6B . There are at least two Valve Cap Elongated Prongs  155  symmetrically located on the bottom  171  of the Valve Cap  160  which are used for securing the Valve Cap  160  to the Main framework  140  over the entrance to Heating Can Assembly  150 . 
         [0066]      FIG. 6A  illustrates a Top View of the Laparoscopic Insertion Valve  170 . The Insertion Valve  170  and duckbill valve  174  provide a point of entry for the insertion device. A special Insertion Valve Expansion Bladder  500  of  FIG. 6B  is provided to compensate for the pressure displacements caused by the insertion of laparoscopic devices into the canister  150  and to compensate for the expansion that takes place when the liquid  190  is heated. The compressible valve expansion bladder  500  provides a mechanism for pressure control within canister  150 . 
         [0067]      FIG. 6B  illustrates a Side View of the Laparoscopic Insertion Valve  170 , with expansion bladder  500  protruding. The expansion bladder  500  serves a further purpose, for the insertion of a leakage Reducer  700 . The leakage Reducer  700  is a major improvement to the Laparoscopic Visualization System  10 . It assists in preventing leakage of liquid that may have escaped from the Insertion Valve Duck Bill  174  of FIG.  6 B that expands to allow a Laparoscopic device to enter and provides a tight fit there around, inside the Heated Can Assembly  150 . 
         [0068]      FIG. 7A , illustrates a top Isometric View of the Laparoscopic Leakage Reducer  700 . The Leakage Reducer  700  provides an opening for the Insertion Valve Expansion Bladder  500  of  FIG. 68  to securely engage within the canister  150 . The Leakage Reducer  700  locks into place with the Laparoscopic Insertion Valve  170  of  FIG. 6A , providing a secondary leakage preventing structure and a tool used for accommodating different sized medical devices. The leakage Reducer  700  can be permanently attached as one piece or as two separate pieces. 
         [0069]    In the preferred embodiment the attached tethered Reducer  980  of  FIG. 2  connects at Recessed Reducer Attachment Area  965  of  FIG. 9C . It is snapped into place through the recessed opening  175  of  FIG. 9A , providing a firm snug fit for Laparoscopic devices. This further minimizes the leakage potential for the surfactant  190 . 
         [0070]      FIG. 7C  illustrates a U-shaped projection on the inner surface of retainer  700  that at least partially surrounds aperture  705  to serve as a spacer  710  to keep a pressure release aperture in the leakage reducer  700  from being obstructed, e.t. by a part of valve  170  when the surgical scope is inserted into the chamber. The U-shaped spacer  710  provides a unique means for enabling air to escape with little or no loss of the surfactant liquid  190 . 
         [0071]      FIG. 8A  shows the orientation of the PCB  125  and the inner assembly  100  of Laparoscopic Visualization System  10 . A small gap defines the outer chamber within the Main Framework  140 , and the Heating can assembly  150 , allowing the heating coil  154  to be received within the main framework  140 . 
         [0072]      FIGS. 8B and 8C  show the compactly designed simple PCB  125 , incorporating the On/Off switch  130 , the LED  105 , the Resistor  110 , illustrating the location and orientation of the Thermoswitch  115 , and the Heating Coil connector pins  120  as well. This ergonomic design dramatically reduces the potential for human error during assembly. The integration of the above defined structures into the PCB  125  significantly improves quality control, manufacturing and assembly of the Laparoscopic Visualization System  10 . A PCB battery connector  192  is provided for quickly connecting the battery pack  195  connector  191 . A PCB locking feature  147  of  FIG. 8A  is also employed to help secure the PCB  125  to the main framework  140 . 
         [0073]      FIG. 9A  illustrates a side view of the shell  200  of the Laparoscopic Visualization System  10 . Recessed opening  175  shown allows and helps guide a Laparoscope into the Heating Can Assembly  150 . A bottom cover  910  of Bottom Cover assembly  900  can be used for securely attaching the Laparoscopic Visualization System  10  to a suitable structure within the surgical field during laparoscopic procedures. An endoscopic Lens Cleaning Pad  960  attached via a rear flange  961  is used to clean the Laparoscopic lens before or after insertion into the Heated Can Assembly  150 . The circular opening  955  is formed as part of the housing assembly. The blue LED  105  indicator projects light through a circular opening  955  in the shell  200 . 
         [0074]      FIG. 9B  illustrates a Perspective view of the shell  200  of the Laparoscopic Visualization System  10 . The figure demonstrates how user friendly the Laparoscopic Visualization System  10  is to the surgical team with its simple design, letting the user know when it is activated, by illumination means and warming the liquid  190  used for cleaning the lens. 
         [0075]      FIG. 9C  illustrates an Isometric view of the bottom cover assembly  900  of Laparoscopic Visualization System  10 . An optional additional Recessed Reducer attachment area  965  may be incorporated to compensate for attaching different sizes of valve reducer  980 . A Bottom Housing Assembly Opening  970  is configured to easily allow the inner assembly  100  of the Laparoscopic Visualization System  10  to be inserted into the shell  200  through the bottom. Battery Holder Insertion Opening  975  is specially cut out to allow Battery Holder  195  to snugly and frictionally fit into the shell  200 , and glue or other adhesives can be applied to further secure the inner assembly  100  in the shell  200 . 
         [0076]      FIG. 10  illustrates a Perspective view of the Bottom Cover Assembly  900 . A Bottom Cover adhesive  905  can be used to attach to Bottom Cover  910  to the body assembly  200 . Its purpose is to provide means for securely attaching the Laparoscopic Visualization System  10  to a stationary object, preferably within the surgical field. A Bottom Cover Locking Insert  920  is also provided for attaching the Bottom Cover Assembly  900  to the shell  200 . A special Housing Attachment Tab  915  is designed to clip onto or grab onto a bottom surface of the heating can assembly  150 . A specially designed Clamping Tab  925  is also provided for attaching the Laparoscopic Visualization System  10  to a secure object during surgery. A Bottom Support Member  930  is designed at an angle and is used for holding the Inner Assembly  100  in place. A Bottom Battery Locking Latch  940  is used to provide an attachment for the Bottom Cover assembly  900 . A Bottom Battery Angled Support  945  is used to secure Battery holder  195  inside the shell  200 . 
         [0077]    In a further proposed embodiment, the Laparoscopic Visualization System  10  may incorporate brushes or other mechanical means for cleaning various Laparoscopic instruments. The warmed liquid  190  in the Heated Can Assembly  150  may also be used to warm and clean other types of Laparoscopic Instruments, thus acting as a multipurpose instrument cleaner. 
         [0078]      FIG. 11  presents an electrical schematic of the preferred embodiment wherein all the essential elements are shown. A power supply  205  consisting of three (3) AA batteries  205  is the source that drives the circuitry. An on/off switch  130  in the normally open position is connected in series with the simple parallel circuit presented on the PCB  125  that provides heating and “On” indication to the Laparoscopic Visualization System  10 . Further, normally closed Thermal Switch  115  connects in series with the Heating Coil assembly  145 . The Heating Coil  145  is connected to heating coil pin connectors  120  at points as illustrated. When the temperature of the Heating Can Assembly  150  reaches a predetermined temperature, it causes the Thermoswitch  115  to open, breaking the electrical current going into the heating coil assembly  145 . Whenever the temperature within heating can assembly  150  drops below a predefined lower temperature threshold, the Thermoswitch  15  closes and allows current to flow into the Heating Coil  145  to warm liquid  190 . Although in the preferred embodiment the power source  205  is a DC source it does not preclude use of an AC power source. 
         [0079]    In a further embodiment thermal epoxy  117  of  FIG. 1 , may be used for better transference of heat from the heating coil  145  to the thermal switch  115 . One advantage of using thermal epoxy  117  is that it allows the bi-metallic Thermoswitch  115  to freely expand and contract without any physical restriction or hindrance. 
         [0080]    As will be recognized by those of ordinary skill in the pertinent art, numerous modifications and substitutions can be made to the above-described embodiments of the present invention without departing from the scope of the invention. Accordingly, the preceding portion of this specification is to be taken in an illustrative, as opposed to a limiting sense.

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