Instrument retracting and releasing mechanism and endoscope

Abstract

The present invention provides an instrument retracting mechanism and an endoscope, which relate to the technical field of medical instruments and solve the problems in the prior art. In the present invention, the endoscope includes a handle portion and an instrument channel, and the instrument retracting mechanism includes a seat body and an instrument retracting member; wherein the seat body is connected to the handle portion; the instrument retracting member is movably arranged on the seat body, and the instrument retracting member is configured to be connected to an operating instrument, and the instrument retracting member can drive the operating instrument to move out of the instrument channel and store the operating instrument. When storing, the operating instrument can be moved out of the instrument channel through the instrument retracting mechanism, so that the operating instrument that has been used does not occupy the instrument channel, which facilitates other operating instruments to extend from the instrument channel to the lesion. Compared with the prior art, the present invention has the advantage of being convenient for retracting and releasing the operating instrument to make the endoscope simpler and more convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, in particular to an instrument retracting and releasing mechanism and an endoscope. Background Art

[0002] An endoscope is a medical device used to examine organs and tissues inside the human body. It consists of a flexible tubular structure and a small camera, which can be inserted into the human body through natural openings or incisions such as the mouth, nose, esophagus, stomach, and intestines. An endoscope is usually combined with a light source and an image sensor, allowing doctors to clearly observe internal structures and perform diagnosis and treatment.

[0003] Existing endoscopes generally include an insertion portion and a handle portion. The proximal end of the insertion portion is connected to the handle portion, and the direction of the distal end of the insertion portion can be adjusted by the handle portion, so that the insertion portion can enter the body through the human cavity or surgical incision; an instrument channel is provided inside the insertion portion, and auxiliary devices used for some supporting operations slide inside the insertion portion, so that the lesion can be quickly reached, and the operating portion can operate these auxiliary devices to synchronously perform the movements required for the operation. However, since some operations require multiple auxiliary devices to work together, some auxiliary devices need to be withdrawn from the instrument channel after they are used up so that other auxiliary devices can continue to enter the instrument channel, and the temporarily used auxiliary devices need to be removed from the handle portion, and when they are needed in subsequent operations, the auxiliary devices need to be reinstalled on the handle portion, which makes the operation of the endoscope more cumbersome. Summary of the invention

[0004] The purpose of the present invention is to design an instrument retracting and releasing mechanism and an endoscope to solve the technical problem of cumbersome operation of the endoscope in the related art when different auxiliary devices need to work together.

[0005] The present invention is achieved through the following technical solutions:

[0006] In one aspect, the present application provides an instrument retracting and releasing mechanism for an endoscope. Exemplarily, the endoscope includes a handle portion and an instrument channel.

[0007] Specifically, the instrument retracting mechanism includes a seat body and an instrument retracting member; wherein the seat body is connected to the handle portion; the instrument retracting member is movably arranged on the seat body, and the instrument retracting member is configured to be connectable to an operating instrument, and the instrument retracting member can drive the operating instrument to move out of the instrument channel from the part between the proximal end and the distal end of the instrument channel and retract the operating instrument.

[0008] The instrument retracting mechanism provided above can be used to store the used operating instruments through the instrument retracting part when performing certain surgeries that require the coordinated use of multiple operating instruments. When storing, the operating instruments can be moved out of the instrument channel through the instrument retracting mechanism, so that the used operating instruments do not occupy the instrument channel, which makes it convenient for other operating instruments to be inserted from the instrument channel to the lesion. When the stored operating instruments need to be used again, they can be directly pushed back into the instrument channel through the instrument retracting mechanism. With this arrangement, there is no need to increase the inner diameter of the instrument channel, and the operation is not very cumbersome when switching between different operating instruments, which improves the convenience of the operator when using the endoscope.

[0009] On the other hand, the present application also provides an endoscope. The endoscope has the same technical features as the instrument retracting and releasing mechanism provided in the present application, and can achieve the same technical effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 It is a front view of an embodiment of the present application;

[0012] Figure 2 is an exploded schematic diagram of an embodiment of the present application;

[0013] Figure 3 is an exploded schematic diagram of an embodiment of the present application for illustrating the connection relationship between the seat body and the winding part;

[0014] Figure 4 This is a partial schematic diagram of the embodiment of the present application for showing the limiter Figure 1 ;

[0015] Figure 5 This is a partial schematic diagram of the embodiment of the present application for showing the limiter Figure 2 ;

[0016] Figure 6 It is a partial schematic diagram of an embodiment of the present application for demonstrating the winding relationship between the operating device and the winding part;

[0017] Figure 7 This is a partial schematic diagram of an embodiment of the present application for showing the complete release of the core wire and the outer tube;

[0018] Figure 8This is a schematic diagram of an embodiment of the present application for showing a state in which the extension section of the core wire gradually enters the outer pipeline after the core wire and the outer pipeline are completely released;

[0019] Fig. 9 This is an exploded schematic diagram of an embodiment of the present application for illustrating the connection relationship between the operating member and the winding portion. Figure 1 ;

[0020] Fig.10 This is an exploded schematic diagram of an embodiment of the present application for illustrating the connection relationship between the operating member and the winding portion. Figure 2 ;

[0021] Fig.11 It is a partial schematic diagram for showing the seat body in an embodiment of the present application;

[0022] Fig.12 It is a partial cross-sectional view for displaying the instrument storage component according to an embodiment of the present application.

[0023] The markings in the figure are:

[0024] 100, handle portion; 110, limit member; 111, shielding portion; 112, guide portion; 200, instrument channel; 300, seat body; 400, instrument storage member; 410, winding portion; 411, first sub-portion; 4111, first limit hole; 412, second sub-portion; 4120, connecting groove; 4121, second limit groove; 420, operating member; 421, first plug-in portion; 422, extrusion portion; 423, positioning portion; 424, positioning groove; 500, operating instrument; 510, outer pipeline; 520, core wire; 600, embedded groove; 610, limit strip groove; 700, locking member; 710, first limit portion; 720, second plug-in portion; 800, locking portion; 810, first limit groove. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its accessories relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0029] In the related art, the insertion part of the endoscope is connected to the handle part 100. By manipulating the handle part 100 by the operator, the insertion part can be driven to realize bending actions in various directions, so as to be suitable for different operation positions of the insertion part when entering the human body cavity or surgical incision, so as to facilitate the operator to clearly observe the internal structure of the lesion through the small camera on the insertion part. At the same time, when diagnosing and treating the lesion, the instrument channel 200 provided in the insertion part can allow the operating instrument 500 used for the supporting operation to pass through and directly reach the lesion position. However, in the related art, since some diagnoses and treatments require the coordinated operation of multiple operating instruments 500 with different functions, that is, after using the first operating instrument 500, it is necessary to switch to the second operating instrument 500 for subsequent surgical operations, and then the third or fourth, etc., and the number of operating instruments 500 required for different diagnoses and treatments is also different. The switching action is to withdraw the used operating instrument 500 from the instrument channel 200 and remove it from the handle part 100, and then install other operating instruments 500 that need to be used on the handle part 100. This will make the operation of the endoscope very cumbersome and not conducive to the operation of the surgeon in clinical practice.

[0030] In view of the above technical problems, the present application provides an instrument retracting mechanism, which is provided with an instrument retracting member 400 on the handle portion 100, which can drive the operating instrument 500 to move out of the instrument channel 200 and store the operating instrument 500. In this way, when the operating instrument 500 is not needed, the operating instrument 500 can be withdrawn from the instrument channel 200 and stored at the same time by the instrument retracting member 400, without the need to remove the operating instrument 500, thereby improving the convenience of the operating personnel in switching the operating instrument 500 during clinical surgery.

[0031] The following is combined with Figures 1 to 12 , the instrument retracting and releasing mechanism and the endoscope provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0032] Reference Figure 1-Figure 2 The present application provides an instrument retracting mechanism, which can be applied to an endoscope. Exemplarily, the endoscope includes a handle portion 100 and an instrument channel 200. The handle portion 100 is a basic structural component, which can provide a mounting base for other components and provide a hand grip for the operation of the operator.

[0033] like Figure 1 , Figure 2 As shown, the instrument retracting mechanism includes a seat body 300 and an instrument retracting member 400. Exemplarily, the seat body 300 is a basic structural member, which can provide a mounting base for the instrument retracting member 400. In some embodiments, the seat body 300 is connected to the handle portion 100. In some optional embodiments, the seat body 300 and the handle portion 100 are welded, screwed, or the seat body 300 is a part of the handle portion 100. The instrument retracting member 400 is configured to be connected to the operating instrument 500. Exemplarily, the instrument retracting member 400 is used to store or release the operating instrument 500.

[0034] In some embodiments, the instrument retractable member 400 is movably disposed on the seat body 300 , and the instrument retractable member 400 is used to be connected to the operating instrument 500 , so that the operating instrument 500 can be retracted or released by moving or rotating the instrument retractable member 400 relative to the seat body 300 .

[0035] Exemplarily, the instrument storage member 400 is a mounting or storage base for the operating instrument 500, so that the operating instrument 500 is moved out of the instrument channel 200 from the portion between the proximal end and the distal end of the instrument channel 200 through the instrument storage member 400 and the operating instrument 500 is stored at the same time. Of course, the instrument storage member 400 can store the operating instrument 500 in a manner including but not limited to accommodation, winding or folding.

[0036] Combination Figure 2 , Figure 3In some optional embodiments, the instrument storage member 400 includes a winding portion 410, and the winding portion 410 is rotatably matched with the seat body 300. Exemplarily, the winding portion 410 rotates around the first axis relative to the seat body 300. In some embodiments, the instrument storage member 400 stores the operating instrument 500 by winding, that is, the winding portion 410 can rotate relative to the seat body 300 to allow the operating instrument 500 to be wound on the winding portion 410. The advantage of storing the operating instrument 500 by winding is that the winding portion 410 will not move relative to the handle portion 100, the stroke displacement is small, and it is more suitable for the storage of linear structures. Further, in some embodiments, the winding portion 410 is wound by wheel winding, so that the bending curvature of the operating instrument 500 is consistent at various locations during the storage process, which can prevent the operating instrument 500 from stress concentration after storage to a certain extent, and the operating instrument 500 is not easy to have creases after subsequent release. It is worth noting that in some embodiments, the first axis refers to the central axis of the seat body 300. Of course, since the winding portion 410 is rotatably matched with the base body 300, the first axis can also be referred to as the central axis of the winding portion 410. In the drawings, the dotted line labeled L1 is the first axis.

[0037] In some embodiments, the wire winding portion 410 is in sliding cooperation with the seat body 300, that is, the wire winding portion 410 can move on the seat body 300 along the first axis on the basis of rotating cooperation with the seat body 300, that is, the wire winding portion 410 can spirally slide on the seat body 300 around the first axis. Exemplarily, during the process of the wire winding portion 410 rotating around the first axis relative to the seat body 300, the wire winding portion 410 will simultaneously move on the seat body 300 along the first axis, so that the operating instrument 500 is spirally wound around the wire winding portion 410 along the first axis. When the operating instrument 500 is spirally wound around the wire winding portion 410, the retraction amount of the distal end of the operating instrument 500 can be accurately controlled, thereby improving the operator's control when storing or releasing the operating instrument 500. In some embodiments, when the operating instrument 500 is spirally wound on the winding portion 410, the operating instrument 500 can be tensioned so that the portion of the operating instrument 500 that has been wound on the winding portion 410 can guide the portion of the operating instrument 500 that has not been wound to continue to be wound on the winding portion 410, thereby improving the compactness of the winding of the operating instrument 500 after storage.

[0038] In some optional embodiments, the outer wall of the winding portion 410 is provided with an embedding groove 600, which extends spirally along the first axis on the winding portion 410. When the operating instrument 500 is stored in the instrument receptacle 400, the embedding groove 600 can guide the operating instrument 500 to be wound around the winding portion 410 along the extension direction of the embedding groove 600.

[0039] In some embodiments, the pitch of the embedded groove 600 is equal to the length of the diameter of the operating instrument 500, so that the operating instrument 500 and the embedded groove 600 have a good winding matching degree, thereby avoiding the overlapping of two adjacent circles of the operating instrument 500 when the operating instrument 500 is wound on the embedded groove 600, resulting in irregular winding of the operating instrument 500, and to a certain extent avoiding the situation that the operating instrument 500 is wound multiple circles in the same circumferential direction when it is wound on the winding part 410, and the operating instrument 500 will be more compact when it is wound, and the size design of the winding part can also be reduced, and the stability of the operating instrument 500 after being wound on the winding part 410 is improved. In some other embodiments, the pitch of the embedded groove 600 can also be greater than or equal to the diameter of the operating instrument 500. For example, the groove width of the embedding groove 600 may be greater than or equal to the diameter of the operating instrument 500, so that the embedding groove 600 can completely accommodate the operating instrument 500, or partially accommodate the operating instrument 500, so that the operating instrument 500 can be evenly wound on the winding portion 410 along the extension direction of the embedding groove 600. That is, after such a configuration, whether the operating instrument 500 is released or wound, the operating instrument 500 can be evenly wound on the surface of the winding portion 410, thereby improving the regularity of the operating instrument 500 when it is stored or released.

[0040] For example, Figure 4 , Figure 5 A limiter 110 is provided on the handle portion 100 and is located at the periphery of the winding portion 410. When the operating instrument 500 wound on the winding portion 410 is released, the limiter 110 can restrict the operating instrument 500 so that the operating instrument 500 will not spread in the circumferential direction of the winding portion 410 when released.

[0041] In some embodiments, the stopper 110 has a shielding portion 111. The shielding portion 111 is disposed in the outer circumferential direction of the winding portion 410, and the inner arc wall of the shielding portion 111 fits with the outer surface of the operating device 500 wound on the winding portion 410 to limit the movement of the operating device 500 in the embedded groove 600 and prevent the operating device 500 from spreading out of the embedded groove 600. Exemplarily, the thickness of the shielding portion 111 is greater than or equal to the winding length of the operating device 500 when it is completely wound on the winding portion 410, so that the shielding portion 111 can completely cover the operating device 500 with any number of windings.

[0042] In some embodiments, the stopper 110 further has a guide portion 112, the interior of the guide portion 112 is connected to the interior of the shielding portion 111, and the guide portion 112 is used to guide the unwound portion of the operating instrument 500 from the shielding portion to the side of the instrument channel 200. Exemplarily, the thickness of the guide portion 112 is also greater than or equal to the length of the winding portion 410, so that the operating instrument 500 can enter the guide portion 112 after extending a portion at any winding position on the winding portion 410.

[0043] In a further embodiment, the seat body 300 itself is cylindrical, and the seat body 300 is integrally provided on the handle portion 100 . In some optional embodiments, the seat body 300 can also be welded or threadedly connected to the handle portion 100 .

[0044] Exemplarily, one of the seat body 300 and the winding portion 410 is provided with a spiral guide groove, and the other is provided with a protrusion that slidably cooperates with the spiral guide groove. During the process of the winding portion 410 rotating relative to the seat body 300 around the first axis, the spiral guide groove and the protrusion interact with each other so that the winding portion 410 moves along the first direction relative to the seat body 300. Exemplarily, the spiral guide groove can be an internal thread groove, and the protrusion can be an external thread groove. When the winding portion 410 is rotated, the operating instrument 500 can be smoothly wound on the winding portion 410, and the position of the winding portion 410 can be changed synchronously, so that the operating instrument 500 can be regularly arranged on the winding portion 410 according to the position of the embedding groove 600.

[0045] In some embodiments, the direction of winding along the first axis is opposite to the direction in which the winding portion 410 rotates relative to the seat 300, and the spiral extension direction of the external thread groove on the seat 300 is the same as the spiral winding direction of the operating device 500 when it is wound on the winding portion 410, so that the winding portion 410 moves toward the outside of the handle portion along the first axis when winding the operating device 500, and moves toward the inside of the handle portion along the first axis when releasing the operating device 500. At the same time, when the winding portion 410 is winding the operating device 500, the vacant embedded groove 600 on the surface of the winding portion 410 will always be automatically on the same horizontal plane as the part of the operating device 500 that is about to be wound on the winding portion 410; when the winding portion 410 releases the operating device 500, the embedded groove 600 on the surface of the winding portion 410 that is about to release the operating device 500 will always be automatically on the same horizontal plane as the release direction of the operating device 500, so as to improve the compactness of the operating device 500 during the winding process and the smoothness of the release process.

[0046] Reference Figure 3 , Figure 6In some embodiments, the operating instrument 500 includes an outer pipeline 510 and a core wire 520. The core wire 520 can move relative to the outer pipeline 510. Exemplarily, the outer pipeline 510 is sleeved on the core wire 520, and the core wire 520 can be moved relative to the outer pipeline 510 to achieve the relevant operation of the instrument. For example: in the case where the operating instrument 500 is a biopsy forceps, the opening and closing of the biopsy forceps can be achieved by moving the core wire 520 relative to the outer pipeline 510. Specifically, when the core wire 520 contracts relative to the outer pipeline 510, the part of the core wire 520 located outside the outer pipeline 510 will be subjected to tension and contract, thereby putting the biopsy forceps in a clamping state; when the core wire 520 is released relative to the outer pipeline 510, the part of the core wire 520 located outside the outer pipeline 510 will be subjected to thrust and open, thereby putting the biopsy forceps in a ready-to-clamp state. When the operating instrument 500 is a stone removal basket, the stone removal basket can be released and retracted by moving the core wire 520 relative to the outer pipeline 510. The movement state of the core wire 520 corresponding to the release and retraction is the same as when the operating instrument 500 is a biopsy forceps, which will not be repeated here.

[0047] In some embodiments, the winding portion 410 includes a first sub-portion 411 and a second sub-portion 412, and the second sub-portion 412 is rotatably disposed on the first sub-portion 411. The first sub-portion 411 is connected to the outer pipeline 510, and the second sub-portion 412 is connected to the core wire 520, and the second sub-portion 412 can drive the core wire 520 to move relative to the outer pipeline 510 during the rotation relative to the first sub-portion 411, so as to realize the relevant operations of the operating device 500.

[0048] In some embodiments, the second sub-section 412 is rotatably disposed at the end of the first sub-section 411, and the second sub-section 412 is coaxially connected to the first sub-section 411, and the threaded cavity with internal threads on the winding section 410 is opened in the first sub-section 411. Exemplarily, the first sub-section 411 is connected to the outer pipeline 510 in the operating instrument 500. Exemplarily, the outer pipeline 510 is connected to the first sub-section 411 by bonding or welding, and the connection portion is located at the end of the first sub-section 411 close to the embedding groove 600, so that when the outer pipeline 510 is wound on the first sub-section 411, it starts from the edge of the first sub-section 411, thereby improving the utilization rate of the surface of the first sub-section 411 when winding the outer pipeline 510.

[0049] For example, Figure 3 As shown, a connection groove 4120 is formed on the end wall of the second sub-portion 412 close to the first sub-portion 411 , and one end of the core wire 520 is connected to the connection groove 4120 by bonding or welding.

[0050] In a further embodiment, Figure 7As shown, the length of the core wire 520 is greater than the length of the outer tube 510, so that after the outer tube 510 is fully released, an extended section that can move relatively is left between the fixed connection end of the core wire 520 and the fixed connection end of the outer tube 510. Exemplarily, after the outer tube 510 is fully released, it means that the distal end face of the outer tube 510 reaches a preset position. Exemplarily, the preset position can be, but is not limited to, the end face of the distal end of the endoscope insertion portion.

[0051] In some optional embodiments, a limiting groove 610 is provided on the embedding groove 600 at the end of the winding, and the width of the limiting groove 610 is greater than the outer diameter of the core wire 520, and the width of the limiting groove 610 is less than the outer diameter of the outer pipeline 510. Exemplarily, when the operating instrument 500 is in an unreleased state, the extension of the core wire 520 is in the limiting groove 610. After such a setting, the limiting groove 610 can limit the outer pipeline 510, so that only the extension of the core wire 520 can enter the limiting groove 610, so that the extension of the core wire 520 has a distance to move relative to the outer pipeline 510.

[0052] On this basis, combined with Figure 7 , Figure 8 After the outer pipeline 510 is completely released on the first sub-section 411, the second sub-section 412 can drive the extension section of the core wire 520 to move relative to the outer pipeline 510 during the rotation of the second sub-section 412 relative to the first sub-section 411, that is, when the second sub-section 412 rotates relative to the first sub-section 411, the extension section of the core wire 520 can move relative to the outer pipeline 510 to the inside of the outer pipeline 510 or to the outside of the outer pipeline 510, so as to realize operation switching for the operating instrument 500, for example: when the operating instrument 500 is a biopsy forceps, the second sub-section 412 rotates relative to the first sub-section 411, so that the biopsy forceps can be switched between a clamping state and a waiting state; when the operating instrument 500 is a stone removal basket, the second sub-section 412 rotates relative to the first sub-section 411, so that the stone removal basket can be switched between a released state and a retracted state.

[0053] Exemplarily, the device retracting and releasing mechanism includes an operating member 420, and the operating member 420 is rotationally limited with the winding portion 410, so that when the operator rotates the operating member 420, the winding portion 410 can be driven to rotate synchronously, which is convenient for the operator to operate. The operating member 420 and the winding portion 410 slide in the direction of the first axis. Exemplarily, the operating member 420 can move relative to the winding portion 410 on the first axis, but still maintains a limited position matching state with the winding portion 410 after axial movement. In the direction along the first axis, the operating member 420 can move relative to the winding portion 410 between a first position and a second position.

[0054] In some embodiments, when the operating member 420 moves to the first position relative to the winding portion 410, the operating member 420 is rotationally limitedly matched with the first sub-portion 411 and the second sub-portion 412. For example, in the first position, rotating the operating member 420 can drive the first sub-portion 411 and the second sub-portion 412 to rotate simultaneously.

[0055] In some embodiments, when the operating member 420 moves to the second position relative to the winding portion 410, the operating member 420 is rotationally limited with the second sub-portion 412. Exemplarily, in the second position, the operating member 420 is separated from the first sub-portion 411 and is no longer rotationally limited with the first sub-portion 411, but only rotationally limited with the second sub-portion 412. At this time, when the operating member 420 is rotated, only the second sub-portion 412 is synchronously driven to rotate, while the first sub-portion 411 remains relatively stationary on the seat body 300.

[0056] In the above embodiment, when the operating member 420 moves to the first position along the direction of the first axis, the operating member 420 and the first sub-portion 411 and the second sub-portion 412 are all rotated and limited, and the rotation of the operating member 420 can drive the operating instrument 500 to be wound or released on the first sub-portion 411, so that the operating instrument 500 can be stored or released when in use. When the operating member 420 moves to the second position along the direction of the first axis, the operating member 420 only rotates and limits with the second sub-portion 412, and the rotation of the operating member 420 only drives the core wire 520 in the operating instrument 500 to be retracted and released. At this time, when the operating instrument 500 is a biopsy forceps, the biopsy forceps can be switched between opening and closing; when the operating instrument 500 is a stone removal basket, the stone removal basket can be switched between a released state and a retracted state.

[0057] like Fig. 9 , Fig.10 As shown, in some optional embodiments, the operating member 420 has a first plug-in portion 421, a first limiting hole 4111 is provided on the first sub-portion 411, and a second limiting groove 4121 is provided on the second sub-portion 412 at a position corresponding to the first limiting hole 4111. When the operating member 420 is in the first position, the first plug-in portion 421 is at least partially located in the first limiting hole 4111 and the second limiting groove 4121. At this time, when the operating member 420 rotates, the first plug-in portion 421 will conflict with the inner end wall of the first limiting hole 4111, so that the first plug-in portion 421 will push the first sub-portion 411 to rotate in the circumferential direction, and the second sub-portion 412 is rotatably arranged on the first sub-portion 411. When the second sub-portion 412 is not subjected to any external force, when the operating member 420 rotates, it can drive the first sub-portion 411 and the second sub-portion 412 to rotate synchronously.

[0058] In some optional embodiments, when the operating member 420 is in the second position, the first plug-in portion 421 exits the first limiting hole 4111 and is at least partially located in the second limiting groove 4121. At this time, the first plug-in portion 421 and the first sub-portion 411 are already in a disengaged state, and the end of the first plug-in portion 421 abuts against the inner end wall of the second limiting groove 4121, so that the first plug-in portion 421 will push the second sub-portion 412 to rotate independently when rotating, while the first sub-portion 411 will remain stationary relative to the second sub-portion 412. Therefore, the position change of the first plug-in portion 421 in the first axial direction can realize the switching of the operating member 420 between the first position and the second position, and the operation of the operator is also simpler and more convenient when in use.

[0059] For example, Fig.10 , Fig.11 The device retracting and releasing mechanism further includes a locking member 700, which can be connected to the operating member 420. For example, the locking member 700 can be always connected to the operating member 420, or can be connected after the operating member 420 moves to a certain position. In some embodiments, one of the first sub-portion 411 and the seat body 300 is engaged with the locking member 700 in rotation and limiting position, and the other is provided with a locking portion 800, and the locking portion 800 cooperates with the locking member 700. In some embodiments, when the operating member 420 is in the second position, the operating member 420 can act on the locking member 700 to limit the locking member 700 and the locking portion 800; and / or, when the operating member 420 is in the first position, the operating member 420 can act on the locking member 700 to separate the locking member 700 from the locking portion 800.

[0060] In the above scheme, the operating member 420 and the seat body 300 can achieve rotational position-limiting cooperation through the cooperation relationship between the locking member 700 and the locking part 800, so that when the operating member 420 is in the second position, the first sub-portion 411 and the seat body 300 are in a relatively fixed state, and the rotation of the operating member 420 will only drive the second sub-portion 412 to rotate relative to the first sub-portion 411, so that the core wire 520 can be retracted and released. Exemplarily, when the operating member 420 moves to the first position, the operating member 420 is rotationally limited and cooperated with the first sub-portion 411 through the locking member 700. Specifically, the operating member 420 and the locking member 700 are rotationally limited and cooperated, and the locking member 700 is limited and cooperated with the first sub-portion 411. In some other embodiments, the locking member 700 can also be rotationally limited and cooperated with the seat body 300, and the locking part 800 is arranged on the first sub-portion 411.

[0061] In some embodiments, reference Fig.10 , Fig.12The operating member 420 has a knob portion, the first plug portion 421 is disposed on the knob portion, and the knob portion is rotatably connected to the locking member 700. Exemplarily, the locking member 700 has an axial clamping portion, the extension direction of the axial clamping portion is consistent with the length direction of the seat body 300, the end edge of the axial clamping portion is provided with a barb, the interior of the seat body 300 is hollow and the end away from the handle portion 100 is open, an inner groove is circumferentially formed on the inner wall of the seat body 300 near its own open end, and after the axial clamping portion extends into the interior of the seat body 300, the barb at the end of the axial clamping portion is buckled with the inner groove.

[0062] In the above scheme, when the axial clamping portion moves axially along the length direction of the seat body 300 toward the side away from the handle portion 100, the barb of the axial clamping portion will abut against the inner wall of the inner groove, so that the axial clamping portion will not be detached from the inside of the seat body 300, and the locking piece 700 will not be detached from the seat body 300, and the locking piece 700 can rotate normally on the seat body 300.

[0063] Exemplarily, the locking member 700 also has a second plug-in portion 720, and the length direction of the second plug-in portion 720 is consistent with the length direction of the axial clamping portion. The length of the second plug-in portion 720 is greater than the length of the first plug-in portion 421. The second plug-in portion 720 is always inserted into the first limiting hole 4111, so that when the operating member 420 is in the first position, the second plug-in portion 720 can also contact the inner wall of the first limiting hole 4111 when rotating, thereby driving the first sub-portion 411 to rotate on the seat body 300.

[0064] In the above embodiment, when the operating member 420 is in the first position, the knob portion is rotationally limited and matched on the locking member 700, and the knob portion is used for the operator's hand to hold, so that the operator's hand can rotate the knob portion, thereby synchronously driving the locking member 700 to rotate. When the operating member 420 is in the second position, the knob portion and the locking member 700 rotate relative to each other, and the knob portion does not drive the locking member 700 to rotate together when it rotates. Exemplarily, the locking member 700 has a positioning portion 423. Further, the cross-sectional shape of the positioning portion 423 is a polygonal shape, such as a triangle, a rectangle, a pentagon, and a hexagon. The knob portion has a positioning groove 424, and the positioning groove 424 is used for the positioning portion 423 to be inserted.

[0065] In the above scheme, when the operating member 420 is in the first position, the positioning portion 423 and the positioning groove 424 are plugged into each other to achieve rotation limit, and the rotation of the knob part can drive the locking member 700 to rotate synchronously; when the operating member 420 is in the second position, the positioning portion 423 and the positioning groove 424 are disengaged, and the rotation of the knob part cannot drive the locking member 700 to rotate synchronously.

[0066] In some embodiments, the operating member 420 has a pressing portion 422. When the operating member 420 moves from the first position to the second position, the pressing portion 422 can push the locking member 700 to deform or move in a direction close to the locking portion 800 so that the locking member 700 and the locking portion 800 are limitedly matched; and / or, when the operating member 420 moves from the second position to the first position, the pressing portion 422 can push the locking member 700 to deform or move in a direction away from the locking portion 800 so that the locking member 700 and the locking portion 800 are separated; and / or, The locking member 700 includes a first limiting portion 710, and the first limiting portion 710 is located on the trajectory of the operating member 420 moving from the first position to the second position. The locking member 800 has a first limiting groove 810. During the process of the operating member 420 moving from the first position to the second position, the operating member 420 can act on at least a portion of the first limiting portion 710 to be embedded in the first limiting groove 810; and / or, during the process of the operating member 420 moving from the second position to the first position, the operating member 420 can act on the first limiting portion 710 to move out of the first limiting groove 810.

[0067] Exemplarily, the extrusion portion 422 is disposed on the knob portion, and the locking member 700 includes a first limiting portion 710. In some embodiments, when the operating member 420 is in the first position, the extrusion portion 422 and the first limiting portion 710 are in a relatively static state, and the mutual pressure between the extrusion portion 422 and the first limiting portion 710 is relatively small, so that the first limiting portion 710 is not easily deformed; and when the operating member 420 is in the second position, or in other words, when the operating member 420 is gradually changing from the first position to the second position, the extrusion portion 422 will push the first limiting portion 710 to deform or move in a direction close to the locking portion 800 so that the first limiting portion 710 and the locking portion 800 are limitedly matched, so that when the operating member 420 rotates, the first sub-portion 411 and the seat body 300 will remain in a relatively static state, and only the second sub-portion 412 will be rotated. The extrusion portion 422 is disposed on the knob portion.

[0068] Exemplarily, the extrusion portion 422 is an extrusion groove provided on the knob, and the inner groove wall at one end of the extrusion groove is inclined. An abutment block is provided at the end of the first limiting portion 710, and the abutment block is used to abut and cooperate with the extrusion groove; the locking portion 800 is configured as a first limiting groove 810 provided on the seat body 300; wherein, when the operating member 420 is in the first position, the abutment block on the first limiting portion 710 is in the extrusion groove, and when the knob portion is rotated, the abutment block will abut against the inner side wall of the extrusion groove, and the positioning portion 423 and the positioning groove 424 are plugged and matched, so that the knob portion and the locking member 700 can achieve rotational limiting cooperation, thereby driving the first sub-portion 411 and the second sub-portion 412 to rotate synchronously on the seat body 300, so that the outer pipeline 510 can be retracted and released. When the operating member 420 is in the second position, or in other words, when the operating member 420 is gradually changing from the first position to the second position, the knob portion will move along the first axis in the direction away from the handle portion 100, and the abutment block will abut against the inclined wall surface at one end of the extrusion groove. In the process of continuing to move, the abutment block will be deformed due to the guidance of the inclined wall surface of the extrusion groove, and the direction of deformation is toward the first limiting groove 810, until the abutment block is completely separated from the extrusion groove, and the abutment block will be guided to a position that is always located in the first limiting groove 810, and at this time, the first limiting portion 710 is limitedly matched with the first limiting groove 810. At this time, after the knob portion is rotated, the first sub-portion 411 and the seat body 300 will remain in a relatively static state, and the first plug-in portion 421 will abut against the inner end wall of the second limiting groove 4121, so that when the knob portion is rotated, only the second sub-portion 412 is driven to rotate, and the core wire 520 can be retracted and released.

[0069] Some embodiments of the present application also provide an endoscope. The endoscope has the same or corresponding technical features of retraction and extension as any embodiment of the present application, and can achieve the same or corresponding technical effects.

[0070] The endoscope in the embodiment of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, an enteroscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiment of the present application does not specifically limit the type of the endoscope.

[0071] It should be noted that, in this article, the term "includes", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples. The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention.

Claims

1. An instrument retracting and releasing mechanism for an endoscope, the endoscope comprising a handle portion (100) and an instrument channel (200), characterized in that: The device retracting and releasing mechanism comprises: A seat body (300), wherein the seat body (300) is connected to the handle portion (100); An instrument retracting member (400) is movably disposed on the seat (300), and the instrument retracting member (400) is configured to be connectable to an operating instrument (500). The instrument retracting member (400) can drive the operating instrument (500) to move out of the instrument channel (200) from the portion between the proximal end and the distal end of the instrument channel (200) and store the operating instrument (500).

2. The device retracting and releasing mechanism according to claim 1, characterized in that: The instrument retractable member (400) comprises a wire winding portion (410), wherein the wire winding portion (410) is rotatably matched with the seat body (300), the wire winding portion (410) rotates around a first axis relative to the seat body (300), and the wire winding portion (410) can rotate relative to the seat body (300) so that the operating instrument (500) is wound around the wire winding portion (410).

3. The device retracting and releasing mechanism according to claim 2, characterized in that: The wire winding portion (410) is slidably matched with the seat body (300), and the wire winding portion (410) can move along the first axis relative to the seat body (300). When the wire winding portion (410) rotates around the first axis relative to the seat body (300), the wire winding portion (410) moves along the first axis, so that the operating instrument (500) is spirally wound around the wire winding portion (410) along the direction of the first axis; and / or, The outer peripheral wall of the winding portion (410) is provided with an embedding groove (600), the embedding groove (600) extends spirally around the first axis, and the operating instrument (500) can be wound around the winding portion (410) along the embedding groove (600).

4. The device retracting and releasing mechanism according to claim 2, characterized in that: One of the seat body (300) and the winding part (410) is provided with a spiral guide groove, and the other is provided with a protrusion that slidably cooperates with the spiral guide groove. During the process of the winding part (410) rotating around the first axis relative to the seat body (300), the spiral guide groove and the protrusion interact with each other to enable the winding part (410) to move along the first direction relative to the seat body (300).

5. The device retracting and releasing mechanism according to any one of claims 2 to 4, characterized in that: The operating instrument (500) comprises an outer tube (510) and a core wire (520), wherein the core wire (520) is movable relative to the outer tube (510); The winding portion (410) includes a first sub-portion (411) and a second sub-portion (412) rotatably disposed on the first sub-portion (411); the first sub-portion (411) is connected to the outer pipeline (510); the second sub-portion (412) is connected to the core wire (520); and the second sub-portion (412) can drive the core wire (520) to move relative to the outer pipeline (510) during the rotation of the second sub-portion (412) relative to the first sub-portion (411).

6. The device retracting and releasing mechanism according to claim 5, characterized in that: The device further comprises an operating member (420), wherein the operating member (420) is rotationally limitedly matched with the winding portion (410), and the operating member (420) is slidingly matched with the winding portion (410) in the direction of the first axis. Along the direction of the first axis, the operating member (420) can move relative to the winding portion (410) between a first position and a second position; When the operating member (420) moves to a first position relative to the winding portion (410), the operating member (420) is rotationally limited in cooperation with both the first sub-portion (411) and the second sub-portion (412); when the operating member (420) moves to a second position, the operating member (420) is rotationally limited in cooperation with the second sub-portion (412), and the operating member (420) can rotate relative to the first sub-portion (411).

7. The device retracting and releasing mechanism according to claim 6, characterized in that: The operating member (420) has a first plug-in portion (421), the first sub-portion (411) is provided with a first limiting hole (4111), and the second sub-portion (412) is provided with a second limiting groove (4121) at a position corresponding to the first limiting hole (4111); When the operating member (420) is in the first position, the first plug-in portion (421) is at least partially located in the first limiting hole (4111) and the second limiting groove (4121), and the operating member (420) can drive the first sub-portion (411) and the second sub-portion (412) to rotate; When the operating member (420) is in the second position, the first plug-in portion (421) exits the first limiting hole (4111) and is at least partially located in the second limiting groove (4121), and the operating member (420) can drive the second sub-portion to rotate.

8. The device retracting and releasing mechanism according to claim 6, characterized in that: It also includes a locking member (700), the locking member (700) can be connected to the operating member (420), one of the first sub-portion (411) and the seat body (300) is rotationally limitedly matched with the locking member (700), and the other is provided with a locking portion (800) matched with the locking member (700); When the operating member (420) is in the second position, the operating member (420) can act on the locking member (700) to limit the cooperation between the locking member (700) and the locking portion (800); and / or, when the operating member (420) is in the first position, the operating member (420) can act on the locking member (700) to separate the locking member (700) from the locking portion (800).

9. The device retracting and releasing mechanism according to claim 8, characterized in that: The operating member (420) has a pressing portion (422), and when the operating member (420) moves from the first position to the second position, the pressing portion (422) can push the locking member (700) to deform or move in a direction close to the locking portion (800) so that the locking member (700) and the locking portion (800) are limitedly matched; and / or, when the operating member (420) moves from the second position to the first position, the pressing portion (422) can push the locking member (700) to deform or move in a direction away from the locking portion (800) so that the locking member (700) and the locking portion (800) are separated; and / or, The locking member (700) comprises a first limiting portion (710), the first limiting portion (710) is located on a trajectory of the operating member (420) moving from the first position to the second position, the locking member (800) has a first limiting groove (810), and during the process of the operating member (420) moving from the first position to the second position, the operating member (420) can act on at least a portion of the first limiting portion (710) to be embedded in the first limiting groove (810); and / or, During the process of the operating member (420) moving from the second position to the first position, the operating member (420) can act on the first limiting portion (710) to move out of the first limiting groove (810).

10. An endoscope, characterized in that: An instrument retracting and releasing mechanism comprising any one of claims 1 to 9.

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