Rectoscope for inspecting cavity

Abstract

To provide a rectoscope for inspecting a cavity.SOLUTION: A rectoscope (1) for inspecting a cavity of an individual, comprising a dilator body (2) extending prevalently along a longitudinal axis (X) between a proximal end (21) and a distal end (22), wherein the proximal end (21) and the distal end (22) are connected by a side wall (23) and define, together with the side wall (23), an inner volume (V), the dilator body (2) comprising, at the proximal end (21), a cover (4) movable between a first position in which the cover (4) defines a closing of a proximal opening (PO) of the proximal end (21), and a second position in which the cover (4) is moved away from the proximal opening (PO) so as to make the inner volume (V) of the dilator body (2) accessible, the cover (4) comprising, when in use and when in the first position, at least one window (5) made of a frangible material and breakable, to allow a controlled access to the inner volume (V) of the dilator body (2).SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a rectoscope for examining a cavity. The invention is advantageously applied in the field of diagnosis of pathologies associated with natural or surgically obtained cavities or openings in humans, this diagnosis being carried out by visual inspection of the tissues defining the cavities and openings. The present invention is therefore applicable to the field of anorectal examination. In other words, in use, the rectoscope is insertable into the anorectal cavity of an individual. [Background technology]

[0002] Inspection devices comprising a dilator body and an introducer body are known in the prior art, the dilator body being hollow and having a tubular extension between a distal opening for visual and operational access to the mucosa defining the cavity and a proximal opening accessible by an operator in use, and the introducer body also having a tubular extension between a substantially spire-shaped distal end and a proximal end graspable by the operator.

[0003] The introducer body is configured to be coupled to the dilator body by sliding the introducer body within the dilator body until the spire-shaped end of the introducer body protrudes from the distal opening of the dilator body, resulting in an outer wall shaped to facilitate insertion of the examination device into the patient's cavity.

[0004] In the particular case of a rectoscope, if the dilator body encounters resistance upon insertion into the device due to the patient's anal contractions, it may be necessary to remove the introducer body, in which case it is envisaged to actually pump air into the dilator body to dilate the anal walls, thus facilitating dilation of the anal canal and consequent insertion of the dilator body.

[0005] The use of a cover or another similar device to occlude the proximal opening is contemplated to prevent air introduced into the dilator body and / or bodily fluids or biological material from exiting the proximal opening during insertion of the dilator body.

[0006] In this way, during the introduction of air into the dilator body, air flow is forced out the distal opening and any fluid is blocked by the cover itself.

[0007] Despite this, there is a risk that after opening the cover for examination and / or insertion of another type of instrument, bodily fluids may escape from the proximal opening due to the differential pressure between the inside and outside of the dilator body or cavity, which in turn may cause fluids to escape and hit the surgeon, resulting in discomfort from both a health and hygiene standpoint. Summary of the Invention [Problem to be solved by the invention]

[0008] Therefore, the technical problem of the present invention is to provide a rectoscope that can overcome the drawbacks arising from the prior art.

[0009] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a rectoscope that prevents unwanted escape of fluids even after insertion of the rectoscope into the cavity.

[0010] It is therefore a further object of the present invention to provide a rectoscope that allows the surgeon to perform examination tasks and / or other types of operations without causing discomfort.

[0011] The particular technical problem and the particular object are substantially achieved by a rectoscope with the technical features set forth in one or more of the appended claims. The dependent claims correspond to possible embodiments of the invention.

[0012] In particular, the specified technical problem and the specified objective are substantially achieved by a rectoscope for examining a cavity of an individual. [Means for solving the problem]

[0013] According to one aspect of the invention, a rectoscope is insertable into each anorectal cavity for examining the cavity.

[0014] The rectoscope includes a dilator body extending generally along a longitudinal axis between proximal and distal ends connected by a sidewall that together define an interior volume.

[0015] According to one aspect of the invention, the distal end defines a distal opening for accessing tissue defining a cavity from the interior volume.

[0016] The dilator body includes a cover at a proximal end that is movable between a first position and a second position.

[0017] In the first position, the cover defines a closure (preferably a hermetic seal) of the proximal opening, in other words, the first position of the cover allows for the introduction of fluid through the proximal opening of the dilator body without backflow.

[0018] In the second position, the cover is moved away from the proximal opening to provide access to the interior volume of the dilator body, i.e., the second position of the cover allows access to the interior volume to allow for the introduction of instruments for examination and / or various types of medical instruments.

[0019] According to one aspect of the invention, the dilator body further comprises a cannula at the proximal end adapted to facilitate communication of air from outside the dilator body to the interior volume when the cover is in the first position. According to one aspect of the invention, the rectoscope comprises a pump or another similar device connected or connectable to the cannula and configured to generate a flow of air when the cover is in the first position, enabling a thrust action to be generated through the distal opening enabling expansion of the cavity to facilitate insertion of the dilator body.

[0020] According to one aspect of the invention, the rectoscope further comprises an introducer body having a gripping portion.

[0021] The handle portion, accessible or graspable by an operator, is connected to an insertion portion having a substantially spire-shaped elongated extension along the longitudinal axis between an insertion end distal to the handle portion and an intermediate portion proximal to the handle portion.

[0022] The insert is slidably insertable into and disengageable from the interior volume through the proximal opening when the cover is in the second position.

[0023] According to one aspect of the invention, the cover is made of a frangible material and includes at least one window that is breakable in use to allow controlled access to the interior volume of the expander body when the cover is in the first position.

[0024] Preferably, the cover comprises at least two windows located in opposite portions of the cover relative to a central portion of the cover itself.

[0025] In other words, the window (or frangible window) allows for the insertion of reduced size medical devices that avoid the undesirable return of fluids by breaking the window itself during insertion.

[0026] Preferably, at least one window is obtained as a hole sealed by means of a membrane.

[0027] Preferably, at least one window is defined or obtained by means of a line of weakness defined in the coating itself.

[0028] According to one aspect of the invention, the dilator body is made from a transparent material.

[0029] According to one aspect of the invention, the cover is made of a transparent material, and therefore the at least one window (or windows) are made of a transparent material.

[0030] Further features and advantages of the present invention will become more apparent from the representational and therefore non-limiting description of an embodiment of a rectoscope.

[0031] Such description is set forth below with reference to the accompanying drawings, which are provided for illustrative purposes only and are therefore non-limiting. [Brief explanation of the drawings]

[0032] [Figure 1] FIG. 1 is a perspective schematic view of a rectoscope of the present invention in a first configuration of use. [Figure 2] FIG. 2 is a perspective schematic view of a rectoscope of the present invention in a second configuration of use. [Figure 3] FIG. 3 is a cross-sectional schematic view of a rectoscope of the present invention in a third configuration of use. [Figure 4] FIG. 4 is a cross-sectional schematic view of a rectoscope of the present invention according to a further embodiment. [Figure 5] FIG. 5 is a schematic side view of a rectoscope according to a further embodiment of the present invention. [Figure 6] FIG. 6 is a perspective schematic view of a rectoscope according to a further embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0033] With reference to the accompanying drawings, the numeral 1 generally designates a rectoscope. In use, the rectoscope 1 is insertable into a cavity of an individual. In particular, the rectoscope 1 is insertable into the anorectal cavity of an individual.

[0034] The rectoscope 1 is a device that allows an operator to examine said cavity. Thus, the rectoscope 1 can be used to examine the rectal cavity or the anorectal cavity of a patient.

[0035] The terms "distal" and "proximal" are used herein as such terms are intended in this context with respect to the operator, with the term "proximal" referring to the portion furthest from the patient (or the portion closest to the operator), while the term "distal" refers to the portion closest to the patient (or the portion furthest from the operator).

[0036] The rectoscope 1 comprises a dilator body 2 extending generally along a longitudinal axis "X." In particular, the dilator body 2 extends between a proximal end 21 and a distal end 22. In other words, the dilator body 2 has an elongated extension along the longitudinal axis "X" that defines two ends, namely the proximal end 21 and the distal end 22.

[0037] Proximal end 21 and distal end 22 are connected by sidewall 23 and together with sidewall 23 define an interior volume "V." In other words, sidewall 23 together with proximal end 21 and distal end 22 define and specify interior volume "V."

[0038] Preferably, the rectoscope 1 (or at least the dilator body 2) is made from a transparent polymeric material to allow visualization of the tissue and surrounding mucosa.

[0039] Preferably, the dilator body 2 extends in a substantially tubular shape. Preferably, the dilator body 2 extends in a divergent manner from the proximal end 21 to the distal end 22. In other words, the dilator body 2 extends in a convergent manner from the distal end 22 to the proximal end 21. Advantageously, such a shape of the dilator body 2 makes it easier to insert the dilator body 2 itself into the cavity to be explored.

[0040] Proximal end 21 defines a proximal opening "PO" coaxial with longitudinal axis "X."

[0041] Similarly, distal end 22 defines a distal opening "DO", preferably coaxial with longitudinal axis "X", configured to allow access from interior volume "V" to the tissue and mucosa defining the cavity.

[0042] The proximal opening "PO" and the distal opening "DO" have a substantially circular shape.

[0043] The proximal end 21 is connected to a gripping element 24 that is accessible or graspable by an operator. In other words, the gripping element 24 extends transversely to the longitudinal axis "X."

[0044] Preferably, the rectoscope 1 comprises illumination means 3 for generating a direct light beam from the proximal end 21 towards the distal end 22 .

[0045] The lighting means 3 are preferably defined by LED lights.

[0046] Preferably, the dilator body 2 has a cavity 25 provided therein at the proximal end 21 .

[0047] The illumination means 3 is entirely housed within the cavity 25 in order to generate a light beam directly inside the dilator body 2. In other words, the illumination means 3 is able to generate a light beam that is able to illuminate the internal volume "V" or the distal opening "DO" thanks to the material (typically a transparent material or a material with reduced opacity) from which the dilator body 2 itself is made.

[0048] In other words, proximate the proximal opening "PO" or proximal end 21 defines a cavity 25 into which the illumination means 3 is inserted. The cavity 25 has an at least partially elongated shape and extends along a longitudinal axis "X" and at least an axis incident on and proximal to the distal opening "DO". In this manner, the illumination means 3 is oriented to illuminate the interior volume "V" or distal opening "DO".

[0049] Thus, in this embodiment of the rectoscope 1, the illumination means 3 located within the cavity 25 defines an indirect light source for the distal opening "DO" or internal volume "V".

[0050] Preferably, the gripping element 24 comprises a first element 24a rigidly constrained to the dilator body 2 and a second element 24b connectable to the first element 24a.

[0051] Preferably, the grip element 24 is made in the form of a handle. Even more preferably, the handle is defined by a first element 24a and a second element 24b.

[0052] Preferably, the second element 24b is defined by a first half shell "S1" and a second half shell "S2."

[0053] Referring specifically to the first element 24a, this comprises a seat 50 extending over the entire extension of the first element 24a for receiving the second element 24b.

[0054] The seat 50 is interrupted by a window 51 adapted to receive a corresponding protrusion firmly restrained on the second element 24b, in order to favour the stability of the connection and coupling between the first element 24a and the second element 24b.

[0055] Preferably, the second element 24b has a terminal end 24c adapted to receive and hold the lighting means 3.

[0056] In other words, the lighting means 3 is located inside the cavity 25 by means of the second element 24b.

[0057] The dilator body 2 includes at its proximal end 21 a cover 4 that is movable between a first position (FIGS. 1 and 2) and a second position (FIG. 3).

[0058] In the first position, the cover 4 defines a closure (preferably an airtight seal) of the proximal opening "PO". In other words, in the first position, the cover 4 prevents access to the interior volume "V". Thus, in the first position, the cover 4 is oriented transversely or perpendicularly to the longitudinal axis "X". In the first position, the cover 4 is preferably locked by means of an interlock at the proximal end 21.

[0059] In the second position, the cover 4 is moved away from the proximal opening "PO" to make the interior volume "V" of the dilator body 2 accessible.

[0060] Preferably, the cover 4 is completely removable from the proximal end 21 .

[0061] Preferably, the cover 4 is at least partially separable from the proximal end 21 .

[0062] Preferably, the cover 4 comprises a base 40 coupled to or defined at the proximal end 21, and a tipping portion 41 movable relative to the base 40 between a first position and a second position by means of a hinged portion 42. In other words, the hinged portion 42 defines an axis of rotation of the tipping portion 41 relative to the base 40.

[0063] In one embodiment, such as that of Figure 6, the hinge joint 42 has a guide 42a with a C-shaped cross section that is insertable into the guide 42a in use, and a rotation pin 42b. In particular, the rotation pin 42b extends between two ends, with a first end 42c defining a portion for insertion of the rotation pin 42b into the guide 42a and a second end 42d defining a limit stop for the rotation pin 42b during its insertion into the guide 42a.

[0064] As shown in the accompanying drawings, the first end 42c has a diameter smaller than that of the second end 42d to allow insertion of the rotation pin 42b into the guide 42a.

[0065] The rotating pin 42b also has connecting arms 41a between itself and the tipping part 41. In particular, two arms 41a are associated with the two ends of the rotating pin 42b. During insertion of the rotating pin 42b into the guide 42a, the connecting arms 41a do not hinder the insertion into the guide 42a, and conversely, at least one of the connecting arms 41a associated with the second end 42d can also slide inside the guide 42a.

[0066] Once the tipping part 41 is turned over, the connecting arm 41a prevents the rotation pin 42b from sliding, thereby preventing the cover 4 from being undesirably removed.

[0067] Preferably, tipping portion 41 may be provided with interlocking teeth 43 that, in the first position, may interlock within cavity 25 or within another part of proximal end 21 that is suitable for the operation.

[0068] The dilator body 2 preferably comprises at its proximal end 21 a cannula 32 adapted to favour communication of air from outside the dilator body 2 to the interior volume "V" when the cover 4 is in the first position.

[0069] Preferably, the rectoscope 1 comprises a pump or other similar instrument (not shown) connected or connectable to the cannula 32 and configured to generate a flow of air when the cover 4 is in the first position, which enables a thrust action to be generated through the distal opening "DO" which enables expansion of the cavity to facilitate insertion of the dilator body 2. In other words, the rectoscope 1 comprises a pumping device which, in use, is in communication with the cannula 32 and is configured to generate a flow of air within the interior volume "V" which tends to define a thrust action through the distal opening "DO".

[0070] The cover 4 or at least one window 5 prevents the escape of air from the interior volume "V" through the proximal opening "PO" to the outside of the dilator body 2 when the cover 4 is in the first position.

[0071] Preferably, the rectoscope 1 further comprises an introducer body 60 having a gripping portion 61 accessible or graspable by an operator and connected to an insertion portion having a substantially pointed arch-shaped insertion end 62 distal to the gripping portion 61 and an elongated extension along a longitudinal axis "X" between an intermediate portion proximal to the gripping portion 61.

[0072] The insert portion is slidably insertable into and disengageable from the interior volume "V" through the proximal opening "PO" when the cover 4 is in the second position.

[0073] In use, the introducer body 60 is used in the first step of inserting the rectoscope 1 into the anal cavity, after which it is removed and the cover 4 is closed to occlude the proximal opening "PO", allowing air to be safely pumped through the cannula 32, thus creating the aforementioned thrust action through the distal opening "D" which allows expansion of the anorectal cavity to allow correct insertion of the rectoscope 1 or dilator body 2 over its entire length.

[0074] Referring to the accompanying drawings, the cover 4 (or tip 41) of the rectoscope 1 comprises at least one window 5 (or frangible window 5) made of a frangible material. The window 5 is breakable in use when the cover 4 is in the first position to allow controlled access to the internal volume "V" of the dilator body 2.

[0075] In particular, the window 5 can be drilled with a suitable tool to allow inspection of the cavity. Advantageously, this solution avoids the occurrence of unwanted fluid return: the pressure differences that would result from a direct opening of the cover 4 causing the return of body fluids and / or organic materials are in fact reduced, and the escape of any fluids / materials is in any case very limited.

[0076] Fracturing the window 5 actually allows the decompression of the internal volume "V" so that fluid cannot exit through the window itself, as will become more clear as this specification continues.

[0077] Furthermore, the window 5 is easily breakable by means of the examination tool, thereby preventing discomfort to the individual caused by further unwanted protrusion. In other words, the window 5 is made of a material that is resistant to pressure applied while generating air, but is easily breakable by means of the examination tool, preventing unwanted proctoscope 1 itself from being pushed into the anorectal cavity of the individual.

[0078] Preferably, the cover 4 comprises at least a pair of windows 5 facing each other relative to a central portion of the cover 4 itself. In this way, it is possible to insert two test devices simultaneously into the internal volume "V".

[0079] Preferably, the cover 4 (or the tipping portion 41) comprises multiple windows 5 or multiple pairs of windows 5 depending on the extension direction of the cover 4 itself or the type of test that needs to be performed with a particular instrument.

[0080] Preferably, the window 5 (or windows 5) has a circular shape. Preferably, the window 5 (or windows 5) has a rectangular shape.

[0081] Preferably, the window 5 (or windows 5) may have any shape that does not obstruct access for testing equipment in use.

[0082] Preferably, at least one window 5 is made in the shape of the hole obtained on the cover 4 . The resulting hole on the cover 4 is preferably aligned with the longitudinal axis "X".

[0083] Preferably, the hole extends along its own axis, which is incident on the longitudinal axis "X" and directed towards the distal opening "DO" so as to facilitate the exit of an inspection instrument towards the distal opening "DO" itself. In embodiments where there are two windows 5, both holes are oriented towards the distal opening "DO".

[0084] In said embodiment, the hole is closed by a membrane. Preferably, the membrane is made in low density polyethylene. Other materials with similar properties can be used to make the membrane. Preferably, the membrane is made from a transparent material so that the user of the testing device can be sure that it is safe to puncture the membrane.

[0085] Preferably, the at least one window is obtained or defined by a line of weakness 5a, for example as shown in the accompanying drawings.

[0086] The weakened line 5a can be obtained on the cover 4 itself. The weakened line 5a may alternatively be obtained on a cap or other covering element arranged to close a hole or a particular seat defined on the cover 4. Preferably, the cap or other covering element may be made from PMMA (Polymethylmethacrylate).

[0087] Preferably, the lines of weakness 5a are defined or formed in the shape of a cross delimiting the window 5 itself.

[0088] Preferably, both of the pair of windows 5 can be fabricated in the shape of holes closed by membranes.

[0089] Preferably, a pair of windows 5 are delimited or obtainable by means of lines of weakness 5a.

[0090] Preferably, one window 5 of the pair of windows 5 may be in the form of a hole blocked by a membrane, and the other window 5 of the pair may be bounded or formed by means of a weakened line 5a.

[0091] Preferably, taking into account the circular extension direction of the cover 4 (or the tipping part 41), the window 5 is defined transversely to the central part of the cover 4 itself. The window 5 is therefore located between the two semicircles that define the cover 4 itself.

[0092] The windows 5 are preferably defined in the "central and lateral" portions of the cover 4 if they have a different shape.

[0093] In this way, any bodily fluids and / or organic matter that are to be deposited towards the proximal opening "PO" are contained below the window 5 and therefore, when they are pierced, are not caused to exit the proximal opening "PO" through the window 5 itself.

[0094] Preferably, the cover 4 (or the tipping portion 41) is provided with a connecting seat 6. Preferably, the connecting seat 6 is defined in the upper central portion of the cover 4 (or the tipping portion 41).

[0095] Preferably, the window 5 is defined / formed in a portion lateral to the connecting seat 6 .

[0096] The rectoscope 1 preferably comprises an acquisition device 7 configured to acquire images at least in a portion external to the distal opening "DO". In other words, the rectoscope 1 defines a kit for examining the cavity of an individual by means of the acquisition device 7.

[0097] Thus, the acquisition device 7 is connectable to the connection seat 6 during use. In other words, the acquisition device 7 or a part thereof used to acquire an image is configured to fit or be inserted into the connection seat 6.

[0098] Preferably, the connection seat 6 includes a transparent window or lens (generally designated 6a in FIG. 3) that defines an acquisition axis that passes through the distal opening "DO." Preferably, the acquisition axis is transverse to the longitudinal axis "X."

[0099] Preferably, the connection seat 6, or a transparent window or lens, also allows for visual observation of the anorectal canal so that a capture device 7 does not necessarily have to be used.

[0100] The positioning of the connection seat 6 makes it possible that during the insertion of the examination instrument through the window 5 (or windows 5), the acquisition of images (or videos) by means of the acquisition device 7 is not obstructed thereby.

[0101] A further embodiment of the rectoscope 1 further comprises an illumination device 8 configured to generate a light beam that passes through the proximal opening "PO" and the distal opening "DO".

[0102] Preferably, the illumination device 8 is integral with the acquisition device 7 which defines the inspection unit 100 .

[0103] The at least one connection seat 6 is also configured to allow, in use, connection of a lighting device 8 to the central portion of the cover 4. In other words, the connection seat 6 can be formed to allow simultaneous connection of both an acquisition device 7 and a lighting device 8.

[0104] Preferably, the connection seat 6 allows the connection of an inspection unit 100 when the illumination device 8 and the acquisition device 7 are integral with each other.

[0105] Alternatively, the connection seat 6 is configured to maintain the illumination device 8 near a central portion of the cover 4. For example, with particular reference to the embodiment in which the inspection unit 100 is defined, the portion of the inspection unit 100 in which the acquisition device 7 is defined is configured to fit into or be inserted into the connection seat 6, with the illumination device 8 (which in use is positioned below the acquisition device 7, as shown in FIG. 4 ) thereby being positioned facing the cover 4 towards the distal opening "DO". In other words, the connection seat 6 is positioned on the cover 4 so as to define a space (preferably transparent) suitable for the passage of the light beam generated by the illumination device 8.

[0106] The illumination device 8 thus defines a distal opening "DO" or direct light source for the interior volume "V".

[0107] According to one embodiment of the rectoscope 1, only lighting means 3 are provided.

[0108] According to a further embodiment of the proctoscope 1, the proctoscope comprises only an illumination device 8 (whether it is integral with the acquisition device 7 or not).

[0109] According to a further embodiment of the rectoscope 1, the rectoscope comprises both lighting means 3 and a lighting device 8. In this way it is possible to best illuminate the internal volume "V" so as to facilitate the examination task.

[0110] Furthermore, the positioning of the connection seat 6 makes it possible to prevent it (or the transparent window or lens) from coming into contact (or excessive contact) with any fluids and / or organic substances that would block its acquisition axis.

[0111] Preferably, in a further embodiment, the cover 4 (or tipping portion 41) does not have a seat and may be provided with a transparent window or defining lens through which the operator can view inside the volume "V" or beyond the distal opening "DO" if visual inspection is required.

[0112] Advantageously, the rectoscope 1 of the present invention overcomes the drawbacks identified in the prior art.

[0113] Advantageously, the present invention prevents unwanted escape of fluid even after the rectoscope 1 is inserted into the cavity.

[0114] Advantageously, the rectoscope 1 allows the surgeon to carry out examination tasks and / or other types of operations without causing discomfort.

[0115] In other words, the rectoscope 1 of the present invention eliminates the need to open the cover 4 to perform the examination procedure, thus preventing the aforementioned undesirable spillage of fluids and / or organic materials.

Claims

1. A proctoscope (1) for examining the cavity of an individual, An expander body (2) extending broadly along the longitudinal axis (X) between a proximal end (21) and a distal end (22), wherein the proximal end (21) and the distal end (22) are connected by a side wall (23), and together with the side wall (23), the expander body (2) defines the internal volume (V), The proximal end (21) is connected to a gripping element (24) that identifies a proximal opening (PO) coaxial with the longitudinal axis (X) and is accessible or graspable by an operator. The distal end (22) identifies a distal opening (DO) for access from the internal volume (V) to the tissue defining the cavity, In a rectoscope (1), the dilator body (2) is provided with a cover (4) at the proximal end (21), and the cover (4) is movable between a first position in which the cover defines the closure of the proximal opening (PO) and a second position in which the cover (4) moves away from the proximal opening (PO) so that the internal volume (V) of the dilator body (2) can be accessed. The rectoscope (1) is characterized in that the cover (4) is made of a fragile material and has at least one window (5) that is breakable during use in order to allow controlled access to the internal volume (V) of the dilator body (2) when the cover (4) is in the first position.

2. The rectoscope (1) according to claim 1, wherein the dilator body (2) also comprises a cannula (32) at the proximal end (21) that is adapted to facilitate communication of air from the outside of the dilator body (2) to the internal volume (V) when the cover is in the first position, and the cover (4) or the at least one window (5) prevents air from flowing out of the internal volume (V) to the inside of the dilator body (2) through the proximal opening (PO) when the cover (4) is in the first position.

3. The rectoscope (1) according to claim 1 or 2, wherein the cover (4) comprises at least one pair of windows (5) facing the central portion of the cover (4) itself.

4. The rectoscope (1) according to claim 1, wherein the at least one window (5) is formed in the form of a hole formed on the cover (4), and the hole is closed by a membrane.

5. The rectoscope (1) according to claim 1, wherein at least one window (5) is formed or defined by a weakening line (5a), the weakening line (5a) preferably defines a cross shape that defines the window (5) itself.

6. The rectoscope (1) according to claim 1, further comprising an acquisition device (7) configured to acquire an image in the outer portion of the distal opening (DO), the cover (4) further comprising at least one connection seat (6) for the acquisition device (7), the acquisition device (7) being defined in the central portion of the cover (4) itself and provided with a transparent window or lens (6a) defining an acquisition axis passing through the distal opening (DO).

7. The rectoscope (1) according to claim 6, further comprising an illumination device (8) configured to generate a light beam passing through the proximal aperture (PO) and the distal aperture (DO), wherein at least one connection seat (6) is configured to allow connection or maintenance of the illumination device (8) in the central portion of the cover (4) during use.

8. The rectoscope (1) according to claim 1, wherein the cover (4) comprises a base (40) coupled to or defined on the proximal end (21) and a tilting portion (41) movable between the first position and the second position relative to the base (40) by means of a hinge coupling portion (42).

9. The rectoscope (1) according to claim 1, comprising an illumination means (3) for generating a direct light beam from the proximal end (21) toward the distal end (22), wherein the expander body (2) has a cavity (25) formed therein at the proximal end (21), and the illumination means (3) is contained within the cavity (25) to directly generate the direct light beam within the expander body (2) or the internal volume (V).

10. The rectoscope (1) according to claim 1, wherein the gripping element (24) comprises a first element (24a) firmly restrained to the dilator body (2) and a second element (24b) that can be coupled to the first element (24a).

11. The rectoscope (1) according to claim 10, wherein the second element (24b) has a terminal portion (24c) adapted to house and hold illumination means (3) for generating a direct light beam from the proximal end (21) to the distal end (22).

12. The rectoscope (1) according to claim 1, further comprising an introduction body (60) having a gripping portion (61) accessible or graspable by the operator, wherein the introduction body (60) is connected to an insertion portion having an elongated extension along the longitudinal axis (X) between a substantially pointed arch-shaped insertion end (62) distal to the gripping portion (61) and a proximal intermediate portion, the insertion portion being slidably inserted into the internal volume (V) through the proximal opening (PO) when the cover (4) is in the second position, and disengaged from the internal volume (V).

Images