Surgical device for biopsy

Abstract

To provide a surgical device in which undesired obstruction of an actuating mechanism is prevented.SOLUTION: A biopsy surgical device (1) comprises: an external structure (2) having a handle (21), the handle (21) being disposed within a proximal portion (2p) of the external structure (2) and being graspable by a user; an external element (3), the external element (3) being insertable into a body cavity during use; a biopsy forceps (4) being held by the external element (3); an actuation mechanism (5) for the forceps (4), the actuation mechanism (5) being disposed within the external structure (2); and a trigger (6) pivotally and rigidly connected to the external structure (2) and being engaged with the actuation mechanism (5). The main structure (51) of the actuation mechanism (5) comprises a pin (58) and the trigger (6) has a through hole (61) shaped like a cam and pivoted on the pin (58) of the main structure of the actuation mechanism (5).SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to surgical devices.

[0002] The present invention has applications in the field of surgical devices for biopsies.

[0003] In particular, a biopsy is a biological examination that consists of removing a portion or fragment of tissue from a living body, which can then be analyzed under a microscope or by other microbiological or molecular biological techniques.

[0004] There are known devices for removing portions or pieces of tissue, such as forceps or other similar devices.

[0005] There are known forceps and other similar devices that are applied to natural or surgically obtained human body cavities and orifices.

[0006] Some of these devices have application for use with examination devices such as anoscopes, proctoscopes, rectoscopes, colposcopes and other similar devices.

[0007] In other words, such devices can be inserted into a hollow tubular dilator body that extends between a distal opening for visual and surgical access to the mucosa that bounds the body cavity, and a proximal opening that provides access for the practitioner during use. In other words, forceps can be introduced into the proximal opening and emerge from the distal opening to remove a portion or fragment of tissue.

[0008] In general, it is well known that such instruments require precise and reliable actuation mechanisms to avoid problems such as blocking of the actuation mechanism itself, the forceps, or other components.

[0009] For example, there are known devices that include triggers whose use can apply forces to the mechanism in undesirable directions, thereby obstructing the mechanism itself and, in turn, the forceps.

[0010] Furthermore, particularly when used with an anoscope, rectoscope, etc., it may be necessary to modify the orientation of the forceps to better remove parts or fragments that cannot be readily achieved due to reasons related to the specificity of the instruments used. Summary of the Invention [Problem to be solved by the invention]

[0011] SUMMARY OF THE INVENTION The technical problem of the present invention is therefore to provide a surgical device that is able to overcome the limitations that have emerged from the prior art.

[0012] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a surgical device in which undesired obstruction of the actuation mechanism is prevented.

[0013] It is therefore a further object of the present invention to provide a surgical device that also allows for easy adjustment of the orientation of the forceps. [Means for solving the problem]

[0014] The stated technical problem and the identified object are substantially achieved by a surgical device having the technical features disclosed in one or more of the appended claims. The dependent claims correspond to possible embodiments of the invention.

[0015] In particular, the stated technical problem and identified objectives are substantially achieved by a surgical device for biopsy. According to one aspect of the invention, the surgical device defines a biopsy system together with an anoscope, proctoscope, rectoscope, colposcope or other similar device.

[0016] The surgical device for biopsy includes an outer structure having a handle disposed on a proximal portion of the outer structure and capable of being grasped by a user.

[0017] The outer structure defines an interior volume and has specific housing for the internal components of the surgical device.

[0018] The external structure is preferably defined by a first half shell and a second half shell which, in an assembled configuration, define an internal volume having specific housing for the internal components of the surgical device.

[0019] The surgical device further includes an outer element extending along the main axis of extension between a first end connected to the distal portion of the outer structure and a second end.

[0020] According to one aspect of the invention, the outer element is insertable into a body cavity during use.

[0021] According to one aspect of the invention, the outer element is rotatable about its main axis of extension.

[0022] The surgical device further includes a biopsy forceps carried by the second end of the outer element. Preferably, during use, the biopsy forceps is rotatable with the outer element about a major axis of extension of the outer element.

[0023] The surgical device further includes a forceps actuation mechanism disposed within the outer structure, in other words, the actuation mechanism is at least partially contained within one or more of the housings defined by the outer structure.

[0024] According to one aspect of the invention, the actuation mechanism comprises a main structure movable within the outer structure between a rest position in which the main structure is proximal to the outer element and a remote position in which the main structure is distal to the outer element. Preferably, the outer structure comprises a housing that at least partially defines a guide for the main structure.

[0025] According to one aspect of the invention, the actuation mechanism includes an actuation wire that extends at least partially within the outer element and has a first end connected to the forceps and a second end connected to a distal end of the main structure of the actuation mechanism itself. Preferably, the actuation wire extends within the outer element and parallel to the main axis of extension. Preferably, the actuation wire is freely rotatable about the main axis of extension.

[0026] According to one aspect of the invention, the actuation mechanism includes a return spring connected to a proximal end of the main structure and configured to return the main structure from the spaced position to the rest position.

[0027] According to one aspect of the invention, the actuation mechanism includes a trigger that is pivotally mounted and rigidly coupled to the outer structure and engaged with the main structure of the actuation mechanism.

[0028] The trigger is movable between a distal position relative to the handle and a proximal position relative to the handle.

[0029] In the distal position of the trigger relative to the handle, the main structure is in a rest position and the forceps is in an open configuration.

[0030] With the trigger in a proximal position relative to the handle, the main structures are in a spaced apart position, tensioning the wire and providing a closed configuration of the forceps.

[0031] Preferably, movement of the trigger from a distal position to a proximal position relative to the handle allows the trigger to interact with the main structure of the actuation mechanism, causing the forceps to close and then open.

[0032] According to one aspect of the invention, the main structure includes a pin, and the trigger has a through hole shaped like a cam and pivoted on the pin of the main structure of the actuation mechanism.

[0033] Advantageously, the cam allows the trigger to effect linear movement of the main structure of the actuation mechanism without transmitting forces that could cause undesirable misalignment that could interfere with the main structure and thus the closure of the wire and forceps.

[0034] In other words, the trigger cam, in conjunction with the various components of the actuation mechanism, allows the main structure of the actuation mechanism to remain on axis (parallel or coincident with the main axis of extension of the outer element during use), thereby preventing misalignment that could cause obstruction or jamming of the mechanism itself and, ultimately, the forceps.

[0035] According to one aspect of the invention, the invention further relates to a surgical biopsy system comprising the above-described surgical device and an anoscope, proctoscope, rectoscope, colposcope or other similar device having a dilator body defining at least a distal opening and a proximal opening, wherein, during use, the surgical device is insertable into the proximal opening to reach the distal opening and therefore the body cavity into which the dilator body is inserted.

[0036] Additional features and advantages of the present invention will appear more clearly from the approximate and non-limiting description of an embodiment of a surgical device.

[0037] In this specification, the description will now be made with reference to the accompanying drawings, which are provided by way of illustration only and not by way of limitation, and in which: [Brief explanation of the drawings]

[0038] [Figure 1] FIG. 1 is a schematic cross-sectional view of a surgical device of the present invention. [Figure 2A]FIG. 2A is a diagram of the device of FIG. 1 in one operational configuration. [Figure 2B] FIG. 2B is a diagram of the device of FIG. 1 in another operational configuration. [Figure 3A] FIG. 3A is a schematic diagram of details of a surgical device of the present invention. [Figure 3B] FIG. 3B is a schematic diagram of details of the surgical device of the present invention. [Figure 3C] FIG. 3C is a schematic illustration of details of a surgical device of the present invention according to a different embodiment. [Figure 3D] FIG. 3D is a schematic illustration of details of a surgical device of the present invention according to a different embodiment. [Figure 3E] FIG. 3E is a schematic illustration of details of a surgical device of the present invention according to a different embodiment. [Figure 4] FIG. 4 is a schematic exploded view of at least some of the components of the apparatus of the present invention. [Figure 5A] FIG. 5A is a schematic diagram of a further embodiment of an apparatus of the present invention. [Figure 5B] FIG. 5B is a schematic diagram of a further embodiment of the device of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0039] With reference to the accompanying drawings, 1 generally indicates a surgical device for biopsy, which for ease of illustration will be designated as surgical device 1.

[0040] In use, the surgical device 1 may be utilized, ie, applied to natural or surgically obtained human body cavities and orifices.

[0041] Preferably, during use, the surgical device 1 may be utilized in conjunction with an anoscope, a proctoscope, a rectoscope, a colposcope, or other similar device to define a biopsy system. In other words, a biopsy system comprises the surgical device 1 and an anoscope, a proctoscope, a rectoscope, a colposcope, or other similar device, as described in one or more of its embodiments herein. Thus, during use, the surgical device 1 can be inserted into the proximal opening of one of the aforementioned devices to reach the distal opening and thus the body cavity.

[0042] The surgical device 1 comprises an outer structure 2 having a handle 21, which is located at a proximal portion 2p of the outer structure 2 itself and which can be grasped by a user.

[0043] In this specification, unless otherwise indicated, the term proximal should be understood to mean any portion of the surgical device 1 that is "closer" to the user in its use configuration, and distal portion should be understood to mean any portion of the device that is "farther" from the user.

[0044] 4 is a schematic representation of an exploded view of the outer structure 2 according to the embodiment, in which the outer structure 2 is defined by at least a first half shell 22 and a second half shell 23.

[0045] Preferably, one of the two half shells, half shell 23 in the accompanying figures, defines a number of seats, or housings, or guides into which the different components making up the surgical device 1 are inserted, which will be described in more detail with each component.

[0046] The surgical device 1 comprises an outer element 3 extending along a main axis of extension "X." The outer element 3 extends between a first end 31 connected to a distal portion 2d of the outer structure 2 and a second end 32. In use, the outer element 3 is insertable into a body cavity, i.e., can be inserted inside an anoscope, rectoscope, or other similar device to access a body cavity.

[0047] The outer element 3 is made in the form of a hollow tubular structure. Preferably, the outer element 3 has a total length between 10 cm and 25 cm between the first end 31 and the second end 32. Other lengths of the outer element 3 are possible depending on the application of the surgical device 1.

[0048] Preferably, the outer element 3 has a holding portion 33 at the first end 31 for holding the outer element 3 itself. In other words, the holding portion 33 is configured to provide a connection between the outer element 3 and the distal portion 2d of the outer structure 2.

[0049] Preferably, the outer structure 2 comprises a retaining seat 24 for the retaining portion 33 in the distal portion 2d.

[0050] Preferably, the retaining portion 33 and the retaining seat 24 are complementary shaped.

[0051] Preferably, the retaining portion 33 and the retaining seat 24 are shaped to allow rotation of the retaining portion 33, and thus of the outer element 3, about the main axis of extension "X" of the outer element 3 itself.

[0052] Preferably, the retaining portion 33 has a cylindrical or disc-like shape (or a similar shape), and the retaining seat 24 is shaped to be complementary to (and therefore also has a cylindrical or disc-like shape) the retaining portion 33. Thus, the retaining portion 33 has a cylindrical, disc-like, or similar shape and is freely rotatable within the retaining seat 24.

[0053] The surgical device 1 further comprises a biopsy forceps 4, which is held by the second end 32 of the outer element 3. The forceps 4 make it possible to reach the tissue to be analyzed, grasp the tissue of interest and remove parts or fragments of the tissue.

[0054] Preferably, the forceps 4 are rigidly connected / held to the second end 32 and are therefore rotatable together with the second end 32 and thus the outer element 3 .

[0055] Advantageously, the ability of the forceps 4, i.e., the outer element 3, to rotate about itself allows the forceps to be oriented during use without having to assume an uncomfortable position by directly rotating the outer structure 2. In other words, in a use configuration intended to remove tissue sections or pieces in a particular manner inside a body cavity and requiring the forceps 4 to be adjusted in a particular manner, the user can (preferably manually) rotate the outer element 3, thereby simultaneously rotating the forceps 4.

[0056] 5A and 5B show a further embodiment of the surgical device 1, in which the surgical device 1 comprises an actuator 200 configured to set the external element 3, i.e., the forceps 4, in a rotational state during use.

[0057] The actuator 200 comprises a body 201 configured to fit around the outer element 3. For example, the body 201 has a substantially "C" shape that defines a seat suitable for achieving its snug fit around the outer element 3.

[0058] In the use configuration, the actuator 200 is fitted adjacent the first end 31 and the distal portion 2 d of the outer structure 2 .

[0059] Preferably, as shown in the accompanying drawings, the actuator 200 comprises a plurality of arms 202 extending towards the distal portion 2d, in particular the arms 202 having a shape such that they are rotatable about the distal portion 2d.

[0060] During use, a user intending to rotate the forceps 4 can interact with the arms 202 and use them as leverage to set the outer element 3 in a rotated state.

[0061] Preferably, the forceps 4 comprises a connecting element 41 arranged inside the outer element 3. Preferably, the connecting element 41 is freely movable inside the outer element 3 itself, as will become more clear below in the description. The connecting element 41 is preferably arranged inside the outer element 3 close to the second end 32 and is movable therein.

[0062] Preferably, the forceps 4 comprise a gripping portion 42 defined by two arms pivoted to one another by a pin 43 fixed inside the outer element 3. Each arm extends between a connecting end 42c and gripping ends 42a and 42b.

[0063] Preferably, the gripping ends 42a and 42b have a cup-like or spoon-like shape, and in the closed configuration of the forceps 4 (the two gripping ends 42a and 42b are brought close to each other), they define a receiving volume for holding a portion or piece of tissue to be analyzed.

[0064] Preferably, the forceps 4 comprises a pair of connecting rods 44a and 44b, each extending between a first end connected to the connecting element 41 and a second end connected to the connecting end 42c of the respective arm.

[0065] The connecting element 41 is itself movable between a first position and a second position.

[0066] In the first position, the connecting element 41 is proximal to the second end 32 of the outer element 3 and the gripping portion 42 is in an open configuration with the gripping ends 42a and 42b spaced apart from each other.

[0067] In the second position, the connecting element 41 is spaced apart from the second end 32 of the outer element 3, pulling the pair of connecting rods 44a and 44b to bring the gripping ends 42a and 42b closer together and define a closed configuration of the forceps 4.

[0068] Preferably, as shown in the accompanying drawings (particularly Figures 3A and 3B), the forceps 4 further comprises a tip or needle (indicated in its entirety with reference numeral 45) that protrudes from the second end 32 of the outer element 3 and is connected to a pin 43 of the gripping portion 42, i.e., to the second end 32 of the outer element 3.

[0069] Advantageously, the tip or needle 45 allows for penetration of a tissue portion or segment to facilitate removal of the tissue portion or segment by the gripping portion 42 .

[0070] The surgical device 1 further comprises an actuation mechanism 5 for the forceps 4 .

[0071] This actuation mechanism 5 is located inside the outer structure 2. In particular, a portion of the actuation mechanism 5 is located inside the outer structure 2 and partially inside the outer element 3. Thus, the actuation mechanism 5 is at least partially located inside the outer structure 2.

[0072] The actuation mechanism 5 comprises a main structure 51 , an actuation wire 52 and a spring 53 .

[0073] The main structure 51 is movable within the outer structure 2 between a rest position and a spaced apart position.

[0074] In the rest position, the main structure 51 is proximal to the element 3 (ie to the distal portion 2d of the outer structure 2), ie in close proximity thereto.

[0075] In the remote position, the main structure 51 is distal to, ie, spaced apart from, the outer element 3 (ie, it is adjacent to the proximal portion 2p of the outer structure 2).

[0076] Preferably, the outer structure 2 has a guide 25 in which the main structure 51 is movable. In other words, the guide 25 extends between the distal portion 2d and the proximal portion 2p of the outer structure 2.

[0077] Main structure 51 extends between a proximal end 51p and a distal end 51d.

[0078] The main structure 51 therefore has an elongated shape and an axis of extension that is parallel to or coincides with the main axis of extension “X” of the outer element 3 .

[0079] Preferably, the proximal end 51p of the main structure 51 is made in the form of a piston, the outer structure 2 defining a sliding guide 26 for the piston.

[0080] Preferably, the distal end 51d of the main structure 51 is made in the form of a chamber 54. Preferably, the chamber 54 has a cubic shape. Preferably, the chamber 54 has a cylindrical shape.

[0081] Preferably, the main structure 51 comprises or has at least a central portion 51a having respective distal and proximal walls.

[0082] The actuation wire 52 extends at least partially within the outer element 3. The actuation wire 52 has a first end 52a connected to the forceps 4 and a second end 52b connected to the distal end 51d of the main structure 51.

[0083] Preferably, the actuation wire 52 has a diameter of 0.5 mm.

[0084] Preferably, the actuation mechanism 5 further comprises a holding cylinder 56 to which the second end 52b of the actuation wire 52 is connected.

[0085] The retaining cylinder 56 is disposed inside the (preferably cylindrical) chamber 54 and is free to rotate inside the chamber 54. In this way, the actuation wire 52 is also free to rotate about the main axis of extension "X" of the outer element 3.

[0086] Preferably, the forceps 4, ie the connecting element 41, is connected to the first end 52a.

[0087] A return spring 53 is connected to the proximal end 51p of the main structure 51 and is configured to return the main structure 51 from the remote position to the rest position.

[0088] Preferably, the outer structure 2 defines a limit stop element 27 for the return spring 53. In other words, the return spring 51 is interposed between the proximal wall of the central portion 51a of the main structure 51 and the limit stop element 27. Preferably, the return spring 53 is fitted around the proximal end 51p of the main structure 51. In other words, the return spring 53 is fitted around the plunger.

[0089] The surgical device 1 further includes a trigger 6 that is pivotally supported and rigidly coupled to the outer structure 2. In other words, the outer structure 2 includes a pin 28 on the upper portion thereof, to which the trigger 6 is connected and which is free to rotate at least through a predetermined arc. In other words, the trigger 6 includes a through-hole 62 at one end thereof, into which the pin 28 is inserted.

[0090] The trigger 6 is engaged with the main structure 51 of the actuation mechanism 5. In other words, a central portion 51a of the main structure 51 defines a housing seat 57 configured to receive the trigger 5. In particular, the outer structure 2 has a respective housing 29 in which the pin 28 is present and within which the trigger 6 is freely rotatable. The housing 29 is at least partially passed by the guide 25 and within which the main structure 51 is freely rotatable. The housing seat 57 therefore at least partially defines a continuation of the housing 29 and allows movement of the trigger 6 disposed thereon during use.

[0091] Preferably, the housing seat 57 has an extension that is inclined, in use, relative to a reference axis parallel to the main axis of extension "X" of the outer element 3.

[0092] The trigger 6 is movable between a distal position relative to the handle 21 and a proximal position relative to the handle 21 .

[0093] In the distal position relative to the handle 21, the main structure 51 is in a rest position and the forceps are in an open configuration.

[0094] In the proximal position relative to the handle 21, the main structure 51 is in a spaced apart position, tensioning the wires 52 and bringing the forceps 4 into a closed configuration.

[0095] Preferably, the trigger 6 extends along its main axis of extension that is substantially parallel to the main axis of extension of the housing seat 57 when the trigger 6 is in a distal position relative to the handle 21 .

[0096] The main structure 51 further comprises a pin 58, and the trigger 6 has a cam-shaped through-hole 61 or formed cam located within the central portion of the trigger 6 itself.

[0097] The through hole 61 is pivotally supported on a pin 58 of the main structure of the actuation mechanism 5 .

[0098] The pin 58 is preferably defined within the central portion 51 a which defines the housing seat 57 .

[0099] Advantageously, the cam-shaped through-hole 61 ensures that the trigger 6 cannot exert any force on the actuation mechanism 5 during movement from a distal position relative to the handle 21 to a proximal position relative to the handle 21. In other words, the cam (or shaped cam) ensures a first path of the trigger 6 in which it does not move the main structure 51 and thereby cause a potentially dangerous movement other than a movement "parallel" to the main axis of extension "X".

[0100] In other words, the cam or shaped cam ensures a first movement in which the trigger does not interfere with the main structure 51, i.e., the pin 58, and a second movement in which the trigger pulls the pin 58, moving the main structure from the rest position to the remote position.

[0101] Thus, the combination of the through hole 61 and the pin 58 makes it possible to obtain linear movement of the main structure 51, so that the main structure 51 does not encounter obstacles, and at the same time makes it easy to return thanks to the return spring 53.

[0102] In other words, the present invention allows the main structure 51 to be maintained on axis, thereby allowing the forceps 4 to be opened and closed effectively.

[0103] During use, a user wishing to use the surgical device 1 inserts it into a body cavity and, upon reaching the portion or piece of tissue to be removed, depresses the trigger 6, thereby moving it from a distal position relative to the handle 21 to a proximal position relative to the handle 21.

[0104] During this movement, the actuation mechanism 5 allows the forceps 4 to move from an open configuration to a closed position. In particular, the main structure 51 slides within the respective seat 25, thereby compressing the return spring 53 and tensioning the actuation wire 52.

[0105] During this movement of the trigger 6, the cam-shaped through-hole 61 or molded cam ensures that it does not immediately come into contact with the pin 58, keeping the main structure 51 on axis with respect to the seat 25.

[0106] During this movement, the actuation wire 52 pulls the connecting element 41 along with it, bringing the connecting element 41 from the first position to the second position and pulling the pair of connecting rods 44a and 44b, thereby causing the gripping elements 42a and 42b to close.

[0107] During actuation of the actuation mechanism 5 by the trigger 6, no undesired force transmission is obtained that may cause misalignment and therefore no inhibition or obstruction to the closure of the forceps 4 is provided.

[0108] According to an alternative embodiment of the forceps 4 represented in FIGS. 3C, 3D and 3E, it comprises a fixed part 100 and a movable part 101 .

[0109] The fixing part 100 is connected or defined on the second end 32 of the outer element 3 .

[0110] Preferably, the fixed part 100 defines a receiving volume. Even more preferably, the fixed part 100 is defined by a body 100a defining said receiving volume and by a fixation body 100b that is connected or connectable to the second end 32 of the external element 3. Preferably, the fixation body 100b is fitted onto or inserted inside the second end 32.

[0111] The movable part 101 is pivotally supported within the fixed part 100 and has a gripping end 102 and an end 103 connected to the first end 52a of the actuation wire 52. Preferably, the movable part 101 has pins 101a pivotally supported within respective holes 100c defined in the fixed part 100. Preferably, the holes 100c are defined within the body 100a. In other words, the movable part 101 is rotatable by means of the pins 101c about an axis of rotation defined by the holes 100c.

[0112] Preferably, the movable part 101 is made in the form of a blade or has a cutting edge 101b.

[0113] Thus, during use, the movable part 101 is movable relative to the fixed part 100 between a first position and a second position by actuation of the actuation mechanism 5. In other words, the movable part 101 is rotatable relative to the fixed part 100 between the two positions.

[0114] In the first position, the gripping end 102 is in an open configuration where it is spaced apart from the fixed portion 100 .

[0115] In the second position, the end 103 is spaced apart from the second end 32 of the outer element 3 to cause rotation of the gripping end 102, which is brought close to the fixed part 100 to define a closed configuration.

[0116] If the fixed part 100 defines a receiving volume (i.e. the body 100a defines said receiving volume), when in the closed part the gripping end 102 is forced or drawn inside the receiving volume. Advantageously, the fixed part 100 makes it possible to ensure that parts or fragments of tissue remain contained within the fixed part 100 itself, so that the parts or fragments can be extracted without damage that may impair subsequent analysis.

[0117] From an operational standpoint, the two embodiments operate in the same manner: actuation of actuation mechanism 5 causes movement of actuation wire 52, which pulls end 103 along actuation wire 52. This causes rotation of grasping end 102, thereby resulting in a closed configuration for holding and / or removing a portion or segment of tissue.

[0118] Other embodiments of the forceps 4 are all intended to be capable of grasping, holding and removing portions or pieces of tissue to be analyzed.

[0119] Advantageously, the present invention is able to overcome the drawbacks that emerge from the prior art.

[0120] Advantageously, undesired obstruction of the actuation mechanism 5 is prevented in the surgical device 1 .

[0121] Advantageously, the surgical device 1 also allows the orientation of the forceps 4 to be easily adjusted.

Claims

1. A surgical device (1) for biopsy, said surgical device (1) comprising: an outer structure (2) having a handle (21), the handle (21) being located in a proximal portion (2p) of the outer structure (2) and capable of being grasped by a user; an outer element (3), the outer element (3) extending along a main axis of extension (X) between a first end (31) connected to a distal portion (2d) of the outer structure (2) and a second end (32), the outer element (3) being insertable into a body cavity in use; a biopsy forceps (4) held by the second end (32) of the outer element (3); an actuation mechanism (5) for the forceps (4) arranged inside the outer structure (2), the actuation mechanism (5) comprising: a main structure (51) movable within the outer structure (2) between a rest position in which the main structure (51) is proximal to the outer element (3) and a remote position in which the main structure (51) is distal to the outer element (3); an actuation wire (52) extending at least partially inside the outer element (3) and having a first end (52a) connected to the forceps (4) and a second end (52b) connected to the distal end (51d) of the main structure (51); and an actuation mechanism (5) comprising a return spring (53), said return spring (53) connected to a proximal end (51p) of said main structure (51) and configured to return said main structure (51) from said remote position to said rest position; a trigger (6) pivotally and rigidly coupled to the outer structure (2) and engaged with the main structure (51) of the actuation mechanism (5), the trigger (6) being movable between a distal position relative to the handle (21) in which the main structure (51) is in the rest position and the forceps (4) is in an open configuration, and a proximal position relative to the handle (21) in which the main structure (51) is in the spaced position, tensioning the actuation wire (52) and resulting in a closed configuration of the forceps (4), A surgical device (1), characterized in that the main structure (51) is provided with a pin (58), and the trigger (6) has a through hole (61) shaped like a cam and pivoted on the pin (58) of the main structure of the actuation mechanism (5).

2. 2. The surgical device (1) according to claim 1, wherein the main structure (51) comprises a central portion (51 a) that defines a housing seat (57) that carries the pin (58) and is configured to receive the trigger (6), the housing seat (57) having an extension that is inclined, in use, with respect to a reference axis that is parallel to the main extension axis (X) of the external element (3).

3. 3. The surgical device (1) of claim 2, wherein the trigger (6) extends along a main extension axis that is parallel to a main extension axis of the housing seat (57) when the trigger (6) is in the distal position relative to the handle (21).

4. 4. A surgical device (1) according to any one of claims 1 to 3, wherein the proximal end (51p) of the main structure (51) is made in the form of a plunger and the return spring (53) is wound around the plunger, and the external structure (2) defines therein a sliding guide (26) for the plunger and a limit stop element (27) for the return spring (53).

5. 5. The surgical device (1) according to claim 1, wherein the distal end (51d) of the main structure (51) is made in the form of a chamber (54), which is preferably cylindrical, and the actuation mechanism (5) further comprises a retaining cylinder (56), to which the second end (52b) of the actuation wire (52) is connected, and the retaining cylinder (56) is arranged inside the chamber (54) and is freely rotatable inside the chamber (54).

6. 6. A surgical device (1) according to any one of claims 1 to 5, wherein the outer element (3) has a holding portion (33) at the first end (31) for holding the outer element (3), and the outer structure (2) has a holding seat (24) for the holding portion (33) at the distal portion (2d).

7. 7. The surgical device (1) of claim 6, wherein the holding portion (33) has a cylindrical or disc-like shape, and the holding seat (24) is shaped to be complementary to the holding portion (33), and the holding portion (33) is freely rotatable within the holding seat (24).

8. The forceps (4) are a connecting element (41) disposed inside the external element (3), connected to the first end (52a) of the actuation wire (52), and freely movable inside the external element (3) under the action of the actuation mechanism (5); a gripping portion (42) defined by two arms pivoted to one another by a pin (43) fixed inside the outer element (3) and extending between a connecting end (42c) and gripping ends (42a, 42b); a pair of connecting rods (44a, 44b) each extending between a first end connected to the connecting element (41) and a second end connected to the connecting end (42c); 8. The surgical device according to claim 1, wherein the connecting element is movable, during use, by actuation of the actuation mechanism between a first position, in which the connecting element is proximal to the second end of the external element and the gripping portion is in an open configuration in which the gripping ends are spaced apart, and a second position, in which the connecting element is spaced apart from the second end of the external element and pulls the pair of connecting rods to bring the gripping ends closer together and define the closed configuration.

9. 9. The surgical device (1) of claim 8, wherein the forceps (4) further comprises a tip or needle (45) connected to the pin (43) of the gripping portion (42), i.e., to the second end (32) of the outer element (3), and protruding from the second end (32) of the outer element (3).

10. 10. The surgical device (1) according to claim 8 or 9, wherein the gripping ends (42a, 42b) have a cup-like or spoon-like shape, and in the closed configuration of the forceps (4) they define a receiving volume.

11. The forceps (4) are a fixed part (100) connected or defined on the second end (32) of the outer element (3); a movable part (101) pivotally supported within the fixed part and having a gripping end (102) and an end (103) connected to the first end (52a) of the actuation wire (52); 8. The surgical device (1) according to any one of claims 1 to 7, wherein the movable part (101) is movable, during use, by actuation of the actuation mechanism (5) relative to the fixed part (100) between a first position, in which the gripping end (102) is in an open configuration away from the fixed part (100), and a second position, in which the end (103) is away from the second end (32) of the external element (3) to cause rotation of the gripping end (102), which is brought close to the fixed part (100) to define the closed configuration.

12. 12. The surgical device (1) of claim 11, wherein the fixed portion (100) defines a storage volume, and the gripping end (102) is tucked or drawn into the storage volume when the forceps (4) are in the closed configuration.

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