Endoscope overtube and endoscope

Abstract

According to the present invention, an endoscope system is provided, which includes an endoscope guide and an endoscope. The endoscope of the system includes a proximal end and a distal end. The endoscope guide of the system includes a proximal end, a middle part, a distal end, an inner cavity and at least one curved portion, the middle part includes at least one endoscope entrance end, the distal end includes at least one endoscope exit end, the inner cavity can accommodate an endoscope extending from the at least one entrance end to the at least one exit end, and the at least one curved portion is located between the at least one entrance end and the at least one exit end. The endoscope guide can guide the distal end of the endoscope to be inserted into a body cavity when the distal end of the endoscope leaves the endoscope exit end, and the distal end of the endoscope guide is also configured to be able to remain in the body cavity during a surgical operation so as to control the positioning of the distal end of the endoscope in the body cavity.

Description

[0001] The present invention relates to an endoscope system comprising an endoscope guide and an endoscope for use in a surgical procedure. The surgical procedure involves introducing and manipulating the endoscope of the system into a body cavity of an individual using the endoscope guide.

[0002] An endoscope is an optionally illuminated optical instrument, usually long and thin and tube-shaped, used for viewing the body and for use in a procedure called endoscopy.

[0003] An endoscope can be inserted into the body through a natural opening to a body cavity, such as through the mouth and down the throat. An endoscope can also be inserted through a small wound (incision) made in the skin during keyhole surgery to create an entrance into a body cavity. An endoscope can be inserted directly into such an incision or through a natural opening, or the endoscope can be introduced through a straight rigid guide.

[0004] Once in the body cavity, the positioning of the endoscope can be manipulated by moving the endoscope itself, or moving a straight rigid guide, and / or incorporating a bendable tip onto the endoscope. As a result, the range of movement and functionality of currently used endoscopes are limited.

[0005] The present invention provides a system comprising an endoscope guide and an endoscope which overcomes the disadvantages of currently used systems and allows a greater range of movement and orientation of the endoscope within a body cavity. Thus, the present invention allows for greater control of surgical procedures.

[0006] According to the present invention, there is provided an endoscope system, the endoscope system comprising an endoscope guide and an endoscope, wherein the endoscope comprises:

[0007] a proximal end; and

[0008] distal end;

[0009] Wherein, the endoscope guide comprises:

[0010] proximal end;

[0011] a middle portion, the middle portion comprising at least one endoscope access port;

[0012] a distal end portion, the distal end portion comprising at least one endoscope exit end;

[0013] an inner cavity capable of receiving an endoscope extending from the at least one inlet end to the at least one outlet end; and

[0014] at least one bend, the at least one bend being located between the at least one inlet end and the at least one outlet end;

[0015] Wherein, the endoscope guide is capable of guiding the distal end of the endoscope to be inserted into a body cavity when the distal end of the endoscope leaves the endoscope exit end, and the distal end of the endoscope guide is also configured to be able to remain in the body cavity during a surgical operation so as to control the positioning of the distal end of the endoscope in the body cavity.

[0016] Preferably, the endoscope is a laryngoscope, an esophagoscope, a thoraoscope, a pleurodoscope, a laparoscope, a bronchoscope, a mediastinoscope, a gastroscope or an amnioscopic scope, and preferably the endoscope is a thoraoscope or a laparoscope.

[0017] Advantageously, the endoscope guide comprises an insufflation connector.

[0018] Conveniently, the endoscope guide comprises a one-way valve located in the lumen between the at least one inlet end and the at least one outlet end, wherein the valve is configured to prevent gas from exiting the body cavity through the lumen of the endoscope guide.

[0019] Advantageously, there is a functional relationship between movement of the proximal end of the endoscope guide and movement of the distal end of the endoscope guide, such that the orientation of the proximal end of the endoscope guide defines the orientation of the distal end of the endoscope located within the lumen of the endoscope guide away from the exit end of the endoscope guide in the body cavity.

[0020] Preferably, the intermediate portion is a substantially straight portion.

[0021] Conveniently, the endoscope guide comprises at least one bend between the intermediate portion and the proximal end.

[0022] Advantageously, the proximal end of the endoscope guide comprises a handle.

[0023] Preferably, the proximal portion of the endoscope guide defines a proximal axis, the distal portion of the endoscope guide defines a distal axis, and the proximal and distal axes are substantially parallel to each other, so that the direction in which the endoscope exits from the at least one exit end is substantially the same as the direction of the proximal axis of the proximal portion. Alternatively, the angle between the proximal portion and the intermediate portion can be adjusted to provide optimal ergonomic conditions during surgery.

[0024] Conveniently, the body cavity is the thoracic cavity, abdominal cavity or pelvic cavity of an animal or human.

[0025] Advantageously, the endoscope guide comprises a collar having a diameter greater than the diameter of the endoscope guide, preferably wherein the collar is located between the at least one entry end and the distal bend.

[0026] According to another aspect of the invention, there is provided a method for inserting an endoscope into a body cavity of an individual, the method comprising the steps of providing an endoscope system according to any preceding claim, and inserting the endoscope into the body cavity of the individual using the endoscope guide.

[0027] According to another aspect of the present invention, there is provided a kit of parts comprising an endoscopic system according to the present invention in the form of a sterile, pre-packaged kit of parts for single use.

[0028] definition

[0029] Proximal end: defines the end of the endoscope and endoscope guide (when used) that is closer to and more accessible to the physician. In other words, it is the end of the endoscope and endoscope guide (when used) that is farther from the desired location in the body cavity.

[0030] Distal end: defines the end of the endoscope and endoscope guide (when these are used) that is farther from the physician. In other words, it is the end of the endoscope and endoscope guide (when the guide is used) that is closer to the desired location of the body cavity, and in an endoscope guide, this includes the endoscope exit end.

[0031] Proximal portion: The proximal portion defines the portion of the endoscope and endoscope guide (when in use) that is accessible to the physician. In other words, it is the portion of the endoscope or endoscope guide (when in use) that is farther from the desired position in the body cavity. Thus, typically, the proximal portion includes the proximal end. In another embodiment of the present invention, the endoscope guide may not include the proximal portion, and in this case, a portion of the middle portion may be considered the proximal portion.

[0032] Distal portion: defines the portion of the endoscope and endoscope guide that is farther from the physician (when in use). In other words, it is the portion of the endoscope or endoscope guide that is closer to the desired location in the body cavity (when in use). The distal portion includes the distal end, which in an endoscope guide includes the endoscope exit end.

[0033] Middle section: The middle section defines a portion of the endoscope guide that connects the proximal section and the distal section. In some cases, the middle section includes the proximal end. Those skilled in the art will recognize that in such cases, for the purpose of understanding, a small portion of the middle section that includes and is close to the proximal end can be considered the proximal section, thereby meeting the requirement that the proximal end is closer to and accessible to the physician when the endoscope guide is in use. The middle section includes an entry port that allows the endoscope to be introduced into the endoscope guide.

[0034] Proximal Axis: The axis along the length of the proximal portion of an endoscope guide and forming a proximal angle with the central axis of the mid-section.

[0035] Distal axis: An axis along the length of the distal portion of the endoscope guide and forming a distal angle with the central axis of the mid-portion. In one embodiment, the direction of the distal axis can be the same as the direction of the proximal axis. Those skilled in the art will recognize that the directions of the proximal and distal axes are not limited to the previous embodiments, as the proximal and distal axes can also form other angles between each other.

[0036] Mid-axis: An axis along the length of the mid-portion of an endoscope guide and forming a proximal angle with the proximal axis and a distal angle with the distal axis, respectively.

[0037] Proximal angle: The angle formed between the proximal axis and the central axis of the endoscope guide at the proximal bend.

[0038] Distal Angle: The angle formed between the distal axis and the central axis of the endoscope guide at the distal bend.

[0039] Proximal Bend: The bend formed in an endoscope guide between the proximal portion (defined by the proximal axis) and the mid-portion (defined by the central axis) due to the proximal angle.

[0040] Distal Bend: The bend formed in an endoscope guide between the distal portion (defined by the distal axis) and the middle portion (defined by the mid-axis) of the endoscope guide due to the distal angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Embodiments of the present invention and their advantages may best be understood from the following detailed description taken in conjunction with the accompanying drawings, wherein like features are represented by like numerals.

[0042] Figure 1 One embodiment of an endoscope guide of the system is shown.

[0043] Figure 2 yes Figure 1 A plan view of the illustrated embodiment.

[0044] Figure 3 Includes pinch valve Figure 1 Cross-sectional view of an endoscope guide.

[0045] Figure 4 and Figure 3 Related, wherein an endoscope is placed within the lumen of an endoscope guide and passed through a pinch valve.

[0046] Figure 5 and Figure 3 Related, wherein the endoscope guide also includes an insufflation connector.

[0047] Figure 6 and Figure 5 Relatedly, in the illustrated endoscope guide, a second lumen is included extending from the insufflation connector to the outlet end of the guide.

[0048] Figure 7 An embodiment of the system of the present invention is described in detail wherein the endoscope guide includes an expandable portion.

[0049] Figure 8 is a partial cross-sectional view of another embodiment of an endoscope guide in use with a patient.

[0050] Fig. 9 is a partial cross-sectional view of another embodiment of an endoscope guide having a telescoping portion for use with a patient.

[0051] Fig.10 is a partial cross-sectional view of another embodiment of an endoscopic guide having an anchoring system in use with a patient.

[0052] Fig.11 Another embodiment of an endoscope guide of the system is shown.

[0053] Fig.12 yes Fig.11 A top view of the endoscope guide system is shown. DETAILED DESCRIPTION

[0054] According to the present invention, an endoscope system including an endoscope guide and an endoscope is disclosed. The endoscope of the system includes a proximal portion having a proximal end and a distal portion having a distal end. The endoscope guide includes a proximal portion having a proximal end, an intermediate portion including at least one endoscope entrance end and a distal portion, and a distal portion including at least one endoscope exit end. The endoscope guide also includes an inner cavity capable of accommodating an endoscope extending from the at least one entrance end to the at least one exit end, and at least one distal bend located between the at least one entrance end and the at least one exit end. The endoscope guide of the present invention is capable of guiding the distal end of the endoscope to be inserted into a body cavity when the distal end of the endoscope leaves the endoscope exit end, and the distal end of the endoscope guide is also configured to be able to remain in the body cavity during a surgical operation so as to control the positioning of the distal end of the endoscope in the body cavity.

[0055] The endoscope guide includes an inner cavity into which an endoscope can be inserted through an entry end located in a middle portion. An endoscope exit end is located at a distal end of the endoscope guide. The entry end and the exit end are separated from each other by a distal bend or curved portion. The exact form of the bend or curved portion of the endoscope guide is not critical, as long as the endoscope can be advanced relatively easily through the inner cavity of the endoscope guide under practical circumstances.

[0056] It is important to the function of the endoscope guide that at least one curved surface portion be located at a distal end of the device that is located within a body cavity during use of the endoscope guide so that movement (including rotation) of the proximal end of the endoscope guide that is located outside the body of the patient to be treated by the physician during a surgical procedure will result in the exit end of the endoscope guide being positioned at a position that defines an intended axial exit direction for the endoscope once the endoscope exits the exit end of the endoscope guide. The ability to define the intended axial exit direction of the endoscope is a requirement for the physician to be able to accurately guide the endoscope into and within a body cavity so as to accurately position the endoscope at an intended location therein.

[0057] A device having no substantially curved portion at its distal end, i.e., the end of the device that is located in a body cavity during use of an endoscope guiding the device, does not, in practical circumstances, allow a physician to define an intended axial exit direction of an endoscope in all circumstances, the intended axial exit direction enabling the physician to accurately position and manipulate the endoscope in a patient's body cavity during a surgical procedure. The reason is that once the endoscope guide enters the body cavity during a surgical procedure, the substantially straight exit end portion of the endoscope guide constrains and limits the angle at which the exit end can be positioned in the body cavity. Once the endoscope guide has entered the body cavity during a surgical procedure, rotation of the endoscope guide having the substantially straight exit end portion does not allow the physician to point the exit end of the device from all desired directions.

[0058] Therefore, the curved portion of the distal end of the endoscope guide ensures that when the practitioner operates the endoscope guide during use, i.e., moves and / or rotates the endoscope guide, and positions the distal opening of the guide at an intended position, the intended position defines the intended axial exit direction of the endoscope, i.e., the endoscope can leave the distal end of the endoscope guide located in the body cavity in the intended and required direction that can accurately position the endoscope at the intended position in the body cavity.

[0059] The at least one curved portion of the endoscope guide located in the distal end of the endoscope guide can be operably connected to other portions of the endoscope guide. In one embodiment, the at least one curved portion of the endoscope guide located at the distal end of the device is operably connected to the first and second openings of the guide, optionally in combination with other guide portions having other shapes and forms required by the endoscope guide design, including guide portions having curved portions (such as arcuate shapes), and guide portions that are at least substantially straight (i.e., non-angled shapes).

[0060] The endoscope outlet end located in the most distal end of the endoscope guide may have a tapered end to facilitate entry of the endoscope into an incision or other opening in the patient's body skin, while preferably maintaining a uniform inner diameter of the lumen of the endoscope guide. Alternatively, the outlet end may be provided with a protruding tip. The tip may be in the form of a lip protruding from the outlet end. Such a lip may assist in the insertion of the guide into the patient's body.

[0061] The endoscope guide may include a collar having a diameter that is significantly larger than the caliber of the guide device. The function of the collar is to prevent the endoscope guide from entering the body cavity of the human body too far, if practical. The location of the collar on the endoscope guide will generally be somewhere between the distal bend or curved portion and the middle portion of the endoscope guide. The collar should not restrict the movement of the distal end of the endoscope guide, but should only ensure that the distal end of the endoscope guide remains at a fixed depth within the body cavity without the risk of being inserted too far into the body cavity.

[0062] The endoscope included in the system of the present invention generally includes a flexible tube and a light transmission system for illuminating an organ or object to be examined in a patient's body cavity, wherein the light source is generally outside the patient's body and transmits the light to the body cavity through an optical fiber system. The endoscope may also include other features, such as a camera and additional channels (entry channels) that allow medical instruments or manipulators to enter.

[0063] The endoscope may also include a device that allows gas to be introduced into the patient's body cavity via an insufflation technique in order to expand the cavity, thereby allowing more room for maneuvering the distal end of the endoscope within the body cavity. The gas may be introduced through an access channel within the endoscope. The gas may be air, but preferably an inert gas such as carbon dioxide, nitrogen or a noble gas, or a mixture of any of these gases, is used. Preferably, carbon dioxide is used to expand the body cavity.

[0064] In another embodiment, the endoscope guide may be used to introduce gas into the body cavity. In such embodiments, the gas may be introduced via the insufflation portion through a lumen extending from the at least one endoscope inlet end to the at least one endoscope outlet end. Alternatively, the endoscope guide may include a second lumen for introducing gas. In any of these cases, the endoscope guide may include an insufflation connector for connecting to a gas source.

[0065] The insufflation portion allows gas to be introduced through the guide and into the patient's body to facilitate use of the endoscope within the patient's body.

[0066] The insufflation portion may include a chamber formed by a portion of the guide, the chamber being larger than the diameter of the inner lumen of the guide, through which the endoscope may pass. A gas inlet may be included, which opens into the chamber and allows gas to be introduced into the inner lumen of the guide and thus into the patient's body.

[0067] The benefit of the larger diameter of the chamber relative to the diameter of the lumen of the guide is that it provides a certain volume between the endoscope and the gas inlet when placed in the lumen. Without this volume, upon introduction into the lumen, the space into which the gas is immediately introduced is limited by the presence of the endoscope in use, which results in an increase in pressure within the lumen and an increase in gas flow. The presence of a larger diameter chamber, and therefore a larger volume, allows for more precise control of the gas flow into the lumen of the guide because the pressure increase is greatly reduced.

[0068] Where the endoscope guide comprises a second lumen for insufflation gas, the second lumen desirably extends from the insufflation connector to the at least one outlet end of the endoscope guide.

[0069] In one embodiment, the endoscope guide of the system includes a valve in the lumen between the at least one inlet port and the at least one outlet port.The valve is configured to prevent gas from exiting the body cavity through the lumen of the endoscope guide.

[0070] Ideally, the valve is located within the endoscope guide, near the insufflation connector, which ensures that gas does not leave the body cavity through the lumen of the endoscope guide at the distal end of the guide entering the body cavity. The valve is preferably configured to allow the introduction of a medium (e.g., gas) or other instrumentation, particularly an endoscope, through the lumen of the endoscope guide and the valve with little hindrance. When the endoscope passes through the lumen of the endoscope guide, the valve preferably forms a substantially airtight seal around the endoscope to prevent gas in the body cavity from leaking through the lumen of the endoscope guide.

[0071] The endoscope guide may in fact comprise multiple valves, such as one, two or three valves, to provide an improved seal around the endoscope.Preferably, the endoscope guide comprises two valves.

[0072] In one embodiment, the one or more valves are located in the chamber of the insufflation portion and before the gas inlet, that is, between the inlet end and the gas inlet. Preferably, the valve is a pinch valve, such as a duckbill valve, which can be made of rubber or a synthetic elastomer. One end of such a valve is fixedly attached to the interior of the lumen of the endoscope guide, and the other end of the valve includes an opening, wherein the opening is configured to naturally narrow gradually to a flat end, at which the opening of the valve is effectively sealed. Preferably, the valve is configured to gradually narrow in a direction away from the endoscope inlet end and toward the endoscope outlet end. When the distal end of the endoscope guide is located in a body cavity filled with gas and therefore under pressure, the valve prevents the gas in the body cavity from flowing back through the lumen of the endoscope guide because the tapered flat end of the valve remains sealed. However, the endoscope of the system can still pass through the valve from the direction of the endoscope inlet end of the guide, and when doing so, the flat end of the valve opens to allow the endoscope to pass, but forms a seal around the endoscope. Therefore, a substantially airtight seal is maintained around the endoscope. When the endoscope is retracted, the valve returns to its natural conical position, thereby resealing the valve.

[0073] Ideally, the insufflation connector is located between the valve and the at least one outlet port of the endoscope guide. Although in embodiments where the guide includes an insufflation connector without a valve, the insufflation connector is ideally located between the at least one inlet port and the at least one outlet port. More preferably, the insufflation connector is located between the at least one inlet port and the distal bend of the guide.

[0074] Particularly suitable endoscopes for inclusion in the system include a laryngoscope, an esophagoscope, a thoraoscope, a pleuroscope, a laparoscope, a bronchoscope, a mediastinoscope, a gastroscope or an amnioscope, preferably the endoscope included in the system is a thoraoscope, a pleuroscope or a laparoscope.

[0075] Preferably, the endoscope of the system includes a curved portion at the distal end, which may include a camera and a light transmission system. Such an endoscope allows the user to control the angle of the tip of the endoscope in order to change the direction of the camera's field of view. The curved portion may be controlled by a joystick located at the proximal end of the endoscope.

[0076] Typically, the curved portion of such an endoscope can be curved in both the upper and lower directions. Preferably, the curved portion is curved at an angle of 90° to 150° in either direction, such as 110° to 150°, more specifically 130° to 150°. Ideally, the curved portion of the endoscope is curved at an angle of 150° in either direction.

[0077] Preferably, there is a functional relationship between the proximal end of the endoscope guide and the distal end of the endoscope. The functional relationship can be determined by measuring the distal angle of the distal bend and the length of the distal portion. Those skilled in the art will appreciate that a priori knowledge of the measurements of the distal angle and the length of the distal portion will allow the physician to manipulate or move the distal end of the endoscope guide in a controlled and reliable manner in order to manipulate the distal end of the endoscope guide within the body cavity.

[0078] The functional relationship determines the position of the distal end of the endoscope guide in the body cavity; and defines the direction of the endoscope exiting the at least one exit end, which is along the distal axis.

[0079] The physician can position the distal end of the endoscope guide in the body cavity by turning the distal end of the endoscope guide through an incision that defines an entry end to the patient's body cavity. By moving the outer portion of the endoscope guide (i.e., the portion of the guide that is not inserted into the body cavity through the incision that defines the passage to the body cavity) sideways or upward or downward, while also retaining the option of being able to rotate the guide along the axis defined by the incision, the physician has essentially complete freedom to adjust and determine the direction of the axis of the endoscope exiting the exit end of the guide and entering the body cavity during the insertion of the endoscope therein, before accurately positioning at a desired position in the body cavity defined by the direction and distance relative to the pleural cavity entry point.

[0080] Based on the above disclosure, it will be understood that the exact design of the curved portion of the endoscope guide is not critical, as long as the endoscope guide can be operated in such a way that the direction of insertion of the endoscope into the body cavity is limited by the outlet end of the endoscope guide, so that the endoscope located in the inner cavity of the endoscope guide can be accurately pointed to the intended position in the body cavity.

[0081] Preferably, the functional relationship between the proximal end of the endoscope guide and the distal end of the endoscope guide allows a medical practitioner to easily and / or intuitively identify the position of the endoscope positioned within the body cavity when passing through the at least one exit end of the guide.

[0082] In one embodiment, the functional relationship determines the position of the distal end of the endoscope guide in the body cavity and defines the direction of the endoscope exiting the endoscope exit end, which is along the distal axis.

[0083] Thus, the direction of movement and positioning of the endoscope within the body cavity can be precisely achieved. This allows a greater range of movement of the distal end of the endoscope within the body cavity than when a conventional port is used to introduce the endoscope into the body cavity. For example, when using an endoscope guide, the physician can move the proximal end of the endoscope guide to a suitable position to position the distal end of the endoscope to face any angle in the lumen. When using an endoscope with a bendable portion as detailed above, the field of view of the endoscope is even further increased. With such a system, a practicing physician can view and / or approach a greater proportion of the body cavity in question than when using a conventional system.

[0084] In one embodiment, the middle portion of the endoscope guide is a substantially straight portion. In other embodiments, the middle portion can be in the form of a curve.

[0085] The middle portion of the endoscope guide includes an endoscope entry end. Having the entry end located in the middle portion of the endoscope guide allows the physician to be relatively independent of the proximal end of the endoscope, with greater freedom in manipulating the proximal end of the endoscope guide.

[0086] For example, when in use, it is desirable to change the direction of the distal axis of the endoscope guide, and therefore the distal end of the endoscope, in order to observe a portion of the body cavity being inspected and / or perform a function thereon. As detailed above, the direction of the distal axis of the endoscope guide is functionally related to the movement of the proximal end of the endoscope guide. Entering the endoscope into the endoscope guide at the middle portion of the guide allows the proximal end of the guide being manipulated to be changed without changing the position of the proximal end of the endoscope. The proximal end of the endoscope can be maintained in a relatively fixed position during surgery, and the endoscope guide can be freely manipulated without being obstructed by the endoscope.

[0087] In more detail, the proximal end of the endoscope may include a plurality of additional features, such as a control rod for controlling the bending of the distal end of the endoscope. When using the system of the present invention, a physician can hold and control the endoscope with his non-dominant hand, and position the endoscope in a body cavity by changing the orientation of the proximal end of the endoscope guide by manipulating the orientation of the distal end of the endoscope guide with his dominant hand. Through the functional relationship between the proximal and distal portions of the endoscope guide, the physician can easily determine the position of the distal portion through the position of the proximal portion.

[0088] It is desirable to easily reposition the distal end of the endoscope guide within the body cavity. However, the proximal end of the endoscope must not interfere with the manipulation of the endoscope guide. The entry end of the endoscope guide is located in the middle portion of the guide, allowing the proximal end of the guide to be manipulated to position the endoscope without any interference from the proximal end of the endoscope, because the proximal end of the endoscope can be kept separate and away from the proximal end of the endoscope guide.

[0089] In another embodiment, the endoscope guide may include an expandable portion extending from an endoscope entry end located at a mid-portion, the expandable portion being changeable in length from an extended first configuration to a retracted second configuration. For example, the expandable portion may be a telescoping portion. Alternatively, the expandable portion may be a foldable rod extending from the endoscope entry end, wherein the expandable portion includes a series of eye guide rings through which the endoscope passes before entering the entry end.

[0090] Ideally, the expandable portion includes a lumen capable of receiving an endoscope.Preferably, the expandable portion extends along an axis substantially the same as the central axis of the endoscope guide.

[0091] In this embodiment, a portion of the proximal end of the endoscope is located in the expandable portion before entering the middle portion entrance end of the endoscope guide. As the proximal end of the endoscope is advanced toward the middle portion entrance end of the endoscope guide, the expandable portion gradually folds from an extended length to a retracted length. The expandable portion serves as a support for the proximal end of the endoscope. Therefore, when the proximal end of the endoscope is advanced into the guide, it remains in a substantially straight configuration before entering the middle portion entrance end. Therefore, the expandable portion prevents the proximal end of the endoscope from bending or kinking, which allows for better control of the overall positioning of the endoscope because the physician does not have to focus on ensuring that the proximal end of the endoscope is not bent. In addition, by preventing the endoscope from excessively bending, any components inside the endoscope (such as optical fibers) can be protected from damage.

[0092] In alternative embodiments, the entry end of the endoscope guide is an opening substantially flush with the outer wall of the guide device, thereby forming an entry end directly through the outer wall of the endoscope guide into the lumen. In other words, some embodiments do not have such an expandable portion protruding from the entry end.

[0093] The endoscope guide may include at least one bend between a middle portion and a proximal portion. In certain embodiments, the proximal portion of the endoscope guide includes a handle, which is typically a substantially straight handle portion. The axial orientation of the substantially straight handle portion of the endoscope guide defines the orientation of an endoscope located in the lumen of the endoscope guide away from an exit end of the endoscope guide in the body cavity. According to this embodiment, the endoscope guide includes at least two curved portions, a proximal bend and a distal bend, wherein the two curved portions are operably connected by a connecting portion, namely the middle portion, which can be a substantially straight connecting portion, or itself in the form of, for example, a curve.

[0094] The curved portions of the proximal and distal bends may be substantially circular arcs. In another embodiment, the proximal and distal bends may form a proximal angle and a distal angle, respectively, each angle independently measuring greater than 0 degrees but less than 180 degrees.

[0095] In one embodiment, the proximal angle and the distal angle are selected from the group consisting of an acute angle, an obtuse angle, a right angle, and combinations thereof. In another embodiment, the proximal angle and the distal angle are selected from the group consisting of a pair of supplementary angles, a pair of complementary angles, and a pair of right angles.

[0096] In this embodiment, by observing the proximal axis direction defined by the straight handle portion, the physician will be able to determine the direction of the endoscope when it leaves the exit end of the endoscope guide in the body cavity, i.e., the distal axis direction, because this direction is the same as the axial direction defined by the straight handle portion (i.e., the proximal axis direction).

[0097] Thus, in this embodiment, the exit direction of the endoscope is substantially the same as the direction of the proximal axis of the proximal end.

[0098] In some embodiments, the endoscope guide is an S-shaped tube, wherein the distal portion, the middle portion, and the proximal portion form an S-shape. The proximal portion of the endoscope guide incorporates a handle that points in the same direction, i.e., defines its proximal axis direction as the axial direction of the distalmost end of the endoscope exiting the distal portion of the tube. In other words, the directions of the proximal and distal axes are preferably the same, i.e., parallel, but the proximal and distal ends extend from the connecting middle portion in substantially opposite directions.

[0099] In one embodiment, the angle between i) the axial direction (i.e., the central axis) of the endoscope when the endoscope enters the entry end of the endoscope guide and ii) the axial direction (i.e., its distal axis) of the endoscope (e.g., located in a body cavity) when the endoscope exits the endoscope guide from the exit end is preferably in the range of 90 degrees to preferably less than 180 degrees, such as in the range of 90 degrees to preferably less than 150 degrees, such as in the range of 90 degrees to preferably less than 140 degrees, such as in the range of 90 degrees to preferably less than 130 degrees, such as in the range of 90 degrees to preferably less than 150 degrees. In the range of less than 120 degrees, such as in the range of 100 degrees to preferably less than 150 degrees, such as in the range of 100 degrees to preferably less than 140 degrees, such as in the range of 100 degrees to preferably less than 130 degrees, such as in the range of 100 degrees to preferably less than 120 degrees, such as in the range of 110 degrees to preferably less than 150 degrees, such as in the range of 110 degrees to preferably less than 140 degrees, such as in the range of 110 degrees to preferably less than 130 degrees, such as in the range of 110 degrees to preferably less than 120 degrees.

[0100] In one embodiment, the endoscopic guide may be provided with an anchoring device that helps place the system at the correct location in the patient's body, for example by helping to fix the depth of insertion of the guide into the patient's body, for example into the patient's abdominal wall.

[0101] When in use, the guide may be inserted into the patient through a layer of skin, fat, and muscle. The thickness of these layers, particularly the fat layer, may vary from patient to patient, so it is very useful for the user to know that the guide has been inserted into the patient to the correct depth in order to properly and safely access and visualize the patient's interior, such as their abdominal cavity.

[0102] The anchoring device may include a pump, which is optionally connected to an inflatable cuff located at or near the distal curved surface outside the guide by a tube. In use, the user can use the pump, including a fluid flow (liquid flow or gas flow) entering the cuff through a tube, to inflate the cuff to the desired size. Ideally, the cuff is located in the muscle layer and inflated to the desired size to fix the depth of the guide to be used. After use, the cuff can be deflated, allowing the guide to be removed from the patient's body. Optionally, the proximal portion of the cuff can be positioned outside the patient's skin when in use, and the distal end can be positioned below the patient's skin when in use. Like the anchoring device, the inflatable cuff can also prevent the inflation gas in the body cavity from escaping when in use.

[0103] It is contemplated that the system of the present invention may be used in any body cavity. Preferably, the body cavity is the thoracic cavity, abdominal cavity or pelvic cavity of an animal or human.

[0104] The cross section of the lumen of the endoscope guide is preferably at least substantially circular to accommodate the insertion of an endoscope also having a circular cross section. However, other geometric cross sections are also conceivable.

[0105] Various polymer materials approved for surgical use can be used to make endoscopic guides, including medical grade moldable polymers such as polypropylene. When the guide device is intended for multiple uses, the polymer composition must be sterilizable. The guide device can also be made of titanium, which is optionally coated.

[0106] Ideally, the endoscope guide is rigid so that it can guide the endoscope through its lumen without deformation. Preferably, when tested using the ASTM D2240 method, the endoscope guide has a Shore A durometer hardness greater than about 40, such as about 40 to about 100, for example, about 40 to about 90, preferably about 50 to about 80. When tested using the ASTM D412 method, the endoscope guide may have a tensile strength at break of about 2 to about 20 MPa, such as about 5 to about 15 MPa, for example, about 5 to about 10 MPa, and ideally about 7 to about 10 MPa.

[0107] Optionally, the endoscope guide has an elongation at break of about 200% to about 1000%, such as about 400% to about 1000%, for example about 500% to about 900%, desirably about 600% to about 900%, when tested using ASTM D412 method.

[0108] When tested using the ASTM D412 method, the modulus at 200% elongation of the endoscope guide is preferably about 1 to about 10 MPa, such as about 1 to about 5 MPa, for example about 2 to about 5 MPa, and desirably about 2 to about 4 MPa.

[0109] Advantageously, the endoscope guide has a tear strength of about 10 to about 100 kN / M, such as about 20 to about 80 kN / M, for example about 40 to 60 kN / M, desirably about 40 to about 50 kN / M when tested using ASTM D624 method.

[0110] In the above embodiments, the endoscope system is described as having two major separate components, namely, the endoscope and the endoscope guide. However, it is fully contemplated that these two components may be integrated together into a single device, including any other embodiments detailed throughout this specification. Thus, in some embodiments, the endoscope and the guide are separate components, while in other embodiments, the endoscope and the guide are integral.

[0111] Figure 1 and Figure 2An embodiment of an endoscope guide (100) of the present invention is shown having a proximal portion (102) and a distal portion (104). The endoscope guide (100) is constructed of polypropylene, but other biocompatible materials, preferably polymeric materials, may also be used. The proximal portion (102) includes a handle portion (106). The handle portion leads to a substantially straight and concave middle portion (108) in the center of the endoscope guide, which itself leads to an opening (110) toward the distal end of the endoscope guide. The opening (110) defines an entry end for inserting a system endoscope. The outer wall of the endoscope guide forms a curved annular portion (112) leading from the entry end (110) to the distal end of the endoscope guide, thereby forming an inner cavity for guiding an endoscope through the guide. The annular portion leads to an opening (114) defining an exit end of the endoscope.

[0112] The handle portion (106) of the endoscope guide defines a proximal axis having a proximal direction. The distal portion (104) and the intermediate portion (108) defined by their respective distal axes and the medial axis form a distal angle defining a distal bend. Similarly, the proximal portion (102) and the intermediate portion (108) defined by their respective proximal axes and the medial axis form a proximal angle defining a proximal bend.

[0113] The proximal angle and the distal angle have a relationship that defines a functional relationship between the movement of the distal end and the proximal end. The endoscope enters the lumen of the endoscope guide through the entry end (110) and is turned by the physician through the lumen defined between the entry end (110) and the exit end (114) of the endoscope guide and exits the endoscope guide from its distal end in the direction of the distal axis. In this embodiment, the exit direction of the endoscope is at least substantially similar to the proximal axis direction. However, in other embodiments, the exit direction of the chest tube is not substantially parallel to the proximal axis direction.

[0114] By observing the relationship between the directions of the proximal and distal axes of the endoscope guide defined by the proximal and distal angles, the relative movement of the distal end relative to the proximal end can be determined, and thus the physician will be able to determine the direction of insertion of the endoscope into an individual's body cavity.

[0115] The outer wall of the guide defines a protruding edge or collar (116) distal to the inlet end (110) to provide a user with a defined stop point to assist in properly inserting the endoscope guide (100) into the patient. The guide (100) is inserted into the patient until the edge (116) is adjacent to or in contact with the patient's skin. The distal end (104) of the endoscope guide (100) is also provided with a protruding tip (118). In the embodiment shown, the tip is in the form of a lip (118) that protrudes from the outlet end (114). The lip (118) assists in inserting the device into the patient.

[0116] Figure 3 and Figure 4 Detailed Figure 1 and Figure 2 In this embodiment of the endoscope guide, the pinch valve (120) is located between the endoscope inlet end and the endoscope outlet end. Figure 3 In the embodiment of the present invention, the valve gradually deforms into a flat end, and its opening is effectively sealed to prevent the pressurized gas from flowing back in the body cavity and escaping through the inner lumen of the endoscope guide.

[0117] exist Figure 4 In FIG. 1 , an endoscope ( 122 ) is positioned within the lumen of an endoscope guide and it can be seen that the flat end of valve ( 120 ) is open to allow the endoscope to pass through the lumen and create a seal around the endoscope.

[0118] Figure 5 and Figure 6 Corresponds to Figure 3 and Figure 4 . However, in these embodiments, the endoscope guide device includes an insufflation connector (124). Preferably, the insufflation connector (124) is a Luer fitting, such as a Luer lock or Luer slip connector. The insufflation connector (124) can be connected to any suitable gas source. In both embodiments, the insufflation connector (124) is located distal to the valve, which allows gas to be introduced into the body cavity of the individual through the lumen, wherein the valve prevents gas from flowing back through the lumen of the endoscope guide from the body cavity.

[0119] like Figure 5 As shown, the insufflation connector (124) can be connected directly to the lumen through which the endoscope is guided. Figure 6 As shown, the insufflation connector (124) can be connected to a second lumen (126) located within the first lumen, wherein the second lumen extends from the insufflation connector (124) to the outlet end of the endoscope guide. Figure 5 and Figure 6 The illustrated embodiments all detail a combination of a valve and an insufflation connector (124), but it is contemplated that any of these features may be incorporated into the device alone. For example, an endoscope guide may include an insufflation connector (124) but not a one-way valve. Alternatively, an endoscope guide may include a one-way valve but not an insufflation connector.

[0120] Figure 7 Another embodiment of the invention is detailed. Specifically, the system in this figure corresponds to any of the figures detailed above, with the addition that the endoscope guide comprises an expandable portion (128), in this case a telescoping portion. Figure 7 A in FIG. 1 shows the expandable portion in a first expanded configuration, Figure 7C shows a close-up image.

[0121] The expandable portion extends along an axis substantially identical to the central axis of the endoscope guide. When the proximal end of the endoscope is advanced toward the entrance end of the intermediate portion of the endoscope guide, the expandable portion gradually folds into a Figure 7 Advantageously, in the retracted configuration shown in B Figure 7 During the advancement process shown, the endoscope is guided through the endoscope guide and out of the exit port.

[0122] Figure 8 An endoscope system (930) of the present invention is shown in use with a patient (966). The system (930) includes a guide (932) in which an endoscope (934) is positioned. The endoscope has a handle portion (936) at a proximal end that is gripped by a user and has controls that control various aspects of the endoscope's function. The guide has a handle portion (942) at a proximal end that is gripped and manipulated by a user to control the position of the guide (932), particularly the position and orientation of the distal end (960) of the guide (932).

[0123] Returning to the endoscope (934), the proximal handle portion (936) leads to the elongated portion of the endoscope (938) which enters the endoscope entry end (946) located in the middle portion (944) of the guide (932). The elongated portion (938) of the endoscope passes through the lumen (964) of the guide toward the endoscope exit end (962) located at the distal end (960) of the guide (932).

[0124] The guide (932) extends in a generally straight manner from the middle portion (944) to a curved portion (958) near the distal end (960) of the guide (932). Located before the curved portion (958) is an insufflation portion (948) that allows gas to be introduced into the patient (966) through the guide (932) to facilitate the use of the endoscope (934) in the patient.

[0125] The insufflation portion (948) includes a chamber (950) formed by a portion of the guide having an increased diameter through which the endoscope (934) passes. A gas inlet (952) opens into the chamber (950) and allows gas to be introduced into the lumen (964) of the guide and, therefore, into the patient. To limit or prevent gas from escaping from the guide, a first valve (954) and a second valve (956) are located within the chamber (950) to form a tight fit around the endoscope (934).

[0126] The endoscope (934) passes through the insufflation portion (948), is guided through the curved portion (958) of the guide, and exits the endoscope exit end (962) from the distal end (960) of the guide (932). The distal end (940) of the endoscope (934) is provided with a light and a camera.

[0127] As shown, guide (932) is inserted into the patient through a layer of skin (968), fat (970), and muscle (974).

[0128] Fig. 9 Another endoscope system (1074) of the present invention is shown for use with a patient (1020). The system (1074) includes a guide (1076) in which an endoscope (1078) is positioned. The endoscope (1078) has a handle portion (1080) at a proximal end that is gripped by a user and has controls that control various aspects of the endoscope's function. The guide (1076) has a handle portion (1086) at a proximal end that is gripped and manipulated by a user to control the position of the guide (1076), particularly the position and orientation of the distal end (1014) of the guide (1076).

[0129] Fig. 9 The system (1074) and Figure 8The difference between the illustrated systems (930) is the structure of the middle portion (1088) of the guide (1076) where the endoscope (1078) enters the guide (1076). As mentioned above, the user may hold the handle (1080) of the endoscope (1078) in one hand and the handle (1086) of the guide (1076) in the other hand. The user pushes the endoscope (1078) into the guide (1076) to allow the distal tip (1084) of the endoscope to be inserted through the guide (1076) into the endoscope exit end (1016) of the patient (1020). However, the elongated endoscope can be very flexible, so there may be problems when the user attempts to push the endoscope (1078) into the guide (1076). For example, this may be that the endoscope (1078) bends or kinks before entering and passing through the guide (1076). The system (1074) addresses this potential problem by providing an expandable portion (1092) in the area of ​​the guide (1076) into which the endoscope (1078) is inserted. As shown, the endoscope (1078) enters an endoscope entry port (1090) located at the expandable portion 1092 of the guide (1076). In the illustrated embodiment, the expandable portion (1092) includes three telescoping portions (1094, 1096, and 1098) that extend from a middle portion (1088) of the guide (1076). As the user pushes the endoscope (1078) into the guide (1076), the elongated portion of the endoscope (1082) is thereby supported and guided by the expandable portion (1092) of the guide (1076), thereby preventing undesirable bending or kinking. When the endoscope (1078) is inserted into the guide (1076) and into a portion (1000) of the middle portion (1088) of the guide, the telescoping portions (1094, 1096, 1098) fold over each other as the concentric cylinders.

[0130] The guide (1076) extends in a generally straight manner from the middle portion (1088) to a curved portion (1012) near the distal end (1014) of the guide (1076). Located before the curved portion (1012) is an insufflation portion (1002) that allows gas to be introduced into the patient (1020) through the guide (1076) to facilitate use of the endoscope (1078) within the patient.

[0131] The insufflation portion (1002) includes a chamber (1004) formed by a portion of the guide having an increased diameter through which the endoscope (1078) passes. A gas inlet (1006) opens into the chamber (1004) and allows gas to be introduced into the lumen (1018) of the guide and, therefore, into the patient. To limit or prevent gas from escaping from the guide, a first valve (1008) and a second valve (1010) are located within the chamber (1004) to form a tight fit around the endoscope (1078).

[0132] The endoscope (1078) passes through the insufflation portion (1002), is guided through the curved portion (1012) of the guide, and exits the endoscope exit end (1016) from the distal end (1014) of the guide (1076). The distal end (1084) of the endoscope (1078) is provided with a light and a camera.

[0133] As shown, guide (1076) is inserted into the patient through a layer of skin (1022), fat (1024), and muscle (1026).

[0134] Fig.10 Another endoscope system (1128) of the present invention is shown in use with a patient (1172). The system (1128) includes a guide (1130) in which an endoscope (1132) is positioned. The endoscope (1132) has a handle portion (1134) at a proximal end that is gripped by a user and has controls that control various aspects of the endoscope's function. The guide has a handle portion (1140) at a proximal end that is gripped and manipulated by a user to control the position of the guide (1130), particularly the position and orientation of a distal end (1158) of the guide (1130).

[0135] Returning to the endoscope (1132), the proximal handle portion (1134) leads to the elongated portion of the endoscope (1136) which enters the endoscope entry end (1144) located in the middle portion (1142) of the guide (1130). The elongated portion (1136) of the endoscope passes through the lumen (1162) of the guide toward the endoscope exit end (1160) located at the distal end (1158) of the guide (1130).

[0136] The guide (1130) extends in a generally straight manner from the middle portion (1142) to a curved portion (1156) near the distal end (1158) of the guide (1130). Located before the curved portion (1156) is an insufflation portion (1146) that allows gas to be introduced into the patient (1172) through the guide (1130) to facilitate use of the endoscope (1132) in the patient.

[0137] The insufflation portion (1146) includes a chamber (1148) formed by a portion of the guide having an increased diameter through which the endoscope (1132) passes. A gas inlet (1150) opens into the chamber (1148) and allows gas to be introduced into the lumen (1163) of the guide and, therefore, into the patient. To limit or prevent gas from escaping from the guide, a first valve (1152) and a second valve (1154) are located within the chamber (1148) to form a tight fit around the endoscope (1132).

[0138] The endoscope (1132) passes through the insufflation portion (1146), is guided through the curved portion (1156) of the guide, and exits the endoscope exit end (1160) from the distal end (1158) of the guide (1130). The distal end (1138) of the endoscope (1132) is provided with a light and a camera.

[0139] The system (1128) is provided with an anchoring device (1164) that helps place the system (1130) in the correct position in the patient's body. Specifically, the anchoring device (1164) helps to fix the depth of insertion of the guide (1130) into the patient's body, such as the depth in the patient's abdominal wall. In addition, the anchoring device also helps prevent the inflation gas in the body cavity from escaping to the outside of the device.

[0140] As shown, guide (1130) is inserted into the patient through a layer of skin (1174), fat (1176), and muscle (1178). The thickness of these layers, particularly the fat layer, can vary from patient to patient, so it is very useful for the user to know that guide (1130) has been inserted to the correct depth within the patient to properly and safely access and visualize the interior of the patient, such as their abdominal cavity.

[0141] The anchoring device shown may include a pump (1166) optionally connected by a tube (1168) to an inflatable cuff (1170) located at or near the distal curved surface (1156) outside the guide (1130). In use, the user can use the pump (1166), including a fluid flow (liquid flow or gas flow) entering the cuff (1170) through the tube (1168), to inflate the cuff (1170) to a desired size. Ideally, the cuff (1170) is located in the muscle layer (1178) and inflated to a desired size to secure the depth of the guide (1130) ready for use. After use, the cuff (1170) can be deflated, allowing the guide (1130) to be removed from the patient's body.

[0142] Fig.11 and Fig.12 Another embodiment of an endoscope guide (1200) of the present invention is shown. Figures 1 to 10 As outlined in the guide, Fig.11 and Fig.12 The guide has a proximal portion (1202) and a distal portion (1204). The endoscope guide (1200) is constructed of polypropylene, although other biocompatible materials, preferably polymeric materials, may also be used. The proximal portion (1202) includes a handle portion (1206). The handle portion leads to a central, substantially straight and concave middle portion (1208) of the endoscope guide, which itself has an opening (1210). The opening (1210) defines an entry port for inserting a system endoscope (1222). In Fig.12 The inlet port (1210) can be better seen in FIG.

[0143] The outer wall of the endoscope guide forms a curved annular portion leading from the entry end (1210) to the distal end of the endoscope guide, thereby forming a lumen for guiding the endoscope through the guide. The annular portion leads to an opening (1214) defining the exit end of the endoscope.

[0144] The handle portion (1206) of the endoscope guide defines a proximal axis having a proximal direction. The distal portion (1204) and the intermediate portion (1208) defined by their respective distal axes and the central axis form a distal angle defining a distal bend. Similarly, the proximal portion (1202) and the intermediate portion (1208) defined by their respective proximal axes and the central axis form a proximal angle defining a proximal bend. In this embodiment, the proximal portion includes a handle defining a proximal axis that extends substantially at a right angle (90°) relative to the central axis.

[0145] The proximal angle and the distal angle have a relationship that defines a functional relationship between the movement of the distal end and the proximal end. The endoscope enters the lumen of the endoscope guide through the entry end (1210) and is turned by the physician through the lumen defined between the entry end (1210) and the exit end (1214) of the endoscope guide and exits the endoscope guide from its distal end in the direction of the distal axis.

[0146] By observing the relationship between the directions of the proximal and distal axes of the endoscope guide defined by the proximal and distal angles, the relative movement of the distal end relative to the proximal end can be determined, and thus the physician will be able to determine the direction of insertion of the endoscope into an individual's body cavity.

[0147] The outer wall of the guide defines a protruding edge or collar (1216) distal to the entry end (1210) to provide a user with a defined stop point to assist in properly inserting the endoscope guide (1200) into the patient. The guide (1200) is inserted into the patient until the edge (1216) is adjacent to or in contact with the patient's skin. The distal end (1204) of the endoscope guide (1200) is also provided with a protruding tip (1218). In the embodiment shown, the tip is in the form of a lip (1218) that protrudes from the exit end (1214). The lip (1218) assists in inserting the device into the patient.

[0148] In this embodiment, the endoscope guide device includes two insufflation connectors (1224). Preferably, the insufflation connectors (1224) are Luer fittings, such as Luer lock or Luer slip connectors. The insufflation connectors (1224) can be connected to any suitable gas source.

[0149] In another aspect, the present invention provides a kit of parts comprising an endoscopic system as described in detail above. The kit of parts is preferably a sterile, prepackaged kit for single use only. The contents of the kit of parts may be isolated from the external environment by a sterile barrier seal that is broken immediately before the contents of the kit of parts are used in a surgical procedure.

[0150] The kit of parts is for emergency use and may optionally further include one or more of the following: scalpels, needles and sutures, surgical scissors, clips, disinfectants, anesthetics, covers, gauze, dressings and suction devices and / or collection bags. The kit of parts may include a plurality of endoscopes of different sizes and / or one or more endoscope guides operable for use in combination with the endoscopes of different sizes.

[0151] Another aspect of the present invention is a method for inserting an endoscope into a body cavity of an individual, the method comprising the steps of providing an endoscope system as described in detail above, and inserting the endoscope into the body cavity of the individual using the endoscope guide. Preferably, the body cavity is the thoracic cavity, abdominal cavity or pelvic cavity of an animal or human.

Claims

1. An endoscope system, comprising a rigid endoscope guide and an endoscope, wherein the endoscope comprises: a proximal portion having a proximal end; and a distal portion having a distal end; Wherein, the rigid endoscope guide comprises: a proximal portion having a proximal end and a handle; a middle portion, the middle portion comprising at least one endoscope access port; a distal portion having a distal end, the distal end including at least one endoscope exit end; a lumen configured to receive an endoscope extending from the at least one endoscope entry end to the at least one endoscope exit end; and at least one distal bend located between the at least one inlet end and the at least one outlet end; at least one proximal bend located between the intermediate portion and the proximal portion; wherein the rigid endoscope guide is capable of guiding the distal end of the endoscope to be inserted into a body cavity when the distal end of the endoscope leaves the endoscope exit end, and the distal end of the rigid endoscope guide is also configured to be able to remain in the body cavity during a surgical procedure so as to control the positioning of the distal end of the endoscope in the body cavity; and wherein there is a functional relationship between movement of the proximal end of the rigid endoscope guide and movement of the distal end of the rigid endoscope guide such that an orientation of the proximal end of the endoscope guide defines an orientation of the distal end of the endoscope located in the lumen away from an exit end of the rigid endoscope guide in the body cavity; and wherein the rigid endoscope guide includes an insufflation portion including a gas inlet and a chamber formed by a portion of the rigid endoscope guide, wherein the chamber has an internal diameter that is greater than an internal diameter of portions of the lumen of the rigid endoscope guide distal and proximal to the chamber, and wherein the insufflation portion is configured to allow gas to be introduced through the rigid endoscope guide and into a body cavity.

2. The endoscope system according to claim 1, wherein the endoscope is a laryngoscope, an esophagoscope, a thoraoscope, a pleurodoscope, a laparoscope, a bronchoscope, a mediastinoscope, a gastroscope or an amnioscopic scope.

3. An endoscope system according to claim 1 or 2, wherein the rigid endoscope guide comprises an insufflation connector.

4. An endoscope system according to claim 1 or 2, wherein the rigid endoscope guide includes a one-way valve located in the inner cavity between the at least one endoscope inlet end and the at least one endoscope outlet end, wherein the valve is configured to prevent gas from passing through the inner cavity of the rigid endoscope guide.

5. The endoscope system according to claim 1 or 2, wherein the middle portion is a substantially straight portion.

6. An endoscope system according to claim 1 or 2, wherein the proximal portion of the rigid endoscope guide defines a proximal axis, the distal portion of the rigid endoscope guide defines a distal axis, and the proximal axis and the distal axis are substantially parallel to each other, so that the direction in which the endoscope leaves from at least one exit end is substantially the same as the direction of the proximal axis of the proximal portion.

7. The endoscope system according to claim 1 or 2, wherein the body cavity is a thoracic cavity, an abdominal cavity or a pelvic cavity of an animal or a human body.

8. The endoscopic system of claim 1 or 2, wherein the rigid endoscopic guide comprises a collar having a diameter greater than a diameter of the rigid endoscopic guide.

9. The endoscopic system of claim 8, wherein the collar is located between the at least one endoscope entry end and the distal bend.

10. The endoscope system according to claim 1 or 2, wherein the endoscope and the rigid endoscope guide are integral.

11. The endoscopic system of claim 1 or 2, wherein the rigid endoscopic guide includes an expandable portion extending from the endoscope entry end located at the midsection.

12. A kit of parts comprising an endoscopic system according to any one of claims 1 to 11 in the form of a sterile, pre-packaged kit of parts for single use.

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