WO2023241133A1 - Reusable segment of endoscope handle, endoscope handle and endoscope - Google Patents

Abstract

A reusable segment of an endoscope handle, the endoscope handle, and an endoscope. The reusable segment of the endoscope handle comprises a first shell (100), first push rods (310), a driving mechanism (200), and an elastic member (320). The two first push rods (310) are movably arranged within the first shell (100). Each of the two first push rods (310) is connected to the driving mechanism (200). The driving mechanism (200) drives the two first push rods (310) to move synchronously in different directions. The elastic member (320) connects the first shell (100) and the first push rods (310), causing the far ends of the two first push rods (310) to abut against each other and form a docking portion. By the elastic action of the elastic member (320), the far ends of the two first push rods (310) abut against each other and form a docking portion. When an operator docks the reusable segment with a disposable segment, it is only necessary to dock the docking portion with the near end of the disposable segment. Compared to the prior art where the reusable segment has at least two docking portions corresponding to force transmission components, the number of docking portions is reduced, and the difficulty of docking the reusable segment with the disposable segment is reduced.

Description

A reusable segment of an endoscope handle, an endoscope handle and an endoscope Technical field

The present invention relates to the technical field of medical devices, and in particular to a reusable section of an endoscope handle, an endoscope handle and an endoscope.

Background technique

As a medical diagnostic instrument, an endoscope can enter the body and take images of the lesion through a camera packaged at its distal end to provide doctors with sufficient diagnostic information to treat the disease. The endoscope includes an endoscope handle, and the doctor The bending action of the active bending section of the endoscope can be controlled by operating the endoscope handle.

The endoscope handle in the related art includes a reusable section and a disposable section. After use, the disposable section is discarded, which can not only solve the problem of cross-infection, but also reduce the cost of discarding the endoscope. In order to ensure that the active bending section of the endoscope can bend in at least two opposite directions, the reusable section is equipped with at least two force transmission components that move in synchronous and opposite directions. Therefore, when docking the reusable section, it is necessary to transmit the two forces Only when the components are accurately docked with the disposable section can the normal bending of the active bending section of the endoscope be ensured. This leads to technical problems such as multiple docking parts and difficulty in docking between the reusable section and the disposable section.

Therefore, providing a reusable segment of an endoscope handle with fewer docking parts and low docking operation difficulty is an urgent technical problem to be solved by those skilled in the art.

Contents of the invention

The invention discloses a reusable section of an endoscope handle, an endoscope handle and an endoscope, so as to solve the technical problems in the related art that the reusable section and the disposable section have many docking parts and the docking operation is difficult. .

In order to solve the above problems, the present invention adopts the following technical solutions:

In a first aspect, this application provides a reusable section of an endoscope handle, including:

first shell;

A first push rod, two of the first push rods are movably provided in the first housing;

A driving mechanism, the two first push rods are respectively connected to the driving mechanism, and the driving mechanism drives the two first push rods to move in different directions simultaneously;

An elastic member connects the first housing and the first push rod so that the distal ends of the two first push rods come into contact and form a butt joint.

Further, the distal end of the first push rod is provided with a first guide surface, and the first guide surface is inclined relative to the axis of the first push rod, and the distal ends of the two first push rods offset each other. In the case of connecting, the two first guide surfaces form a connecting mouth.

Further, the first push rod is provided with a guide groove, the guide groove extends along the axial direction of the first push rod, and the elastic member is provided with a guide protrusion, and the guide protrusion is in contact with the guide protrusion. Grooved slip fit.

Further, the elastic member includes an elastic cover provided at the distal end of the first housing, the outer peripheral part of the elastic cover is connected to the first housing, and the middle part of the elastic cover is provided with two The third through hole through which the first push rod passes.

In a second aspect, the present application provides an endoscope handle, which includes a disposable segment and the aforementioned reusable segment. The disposable segment is detachably connected to the reusable segment. The disposable segment includes a second shell. body, second push rod and turntable, where:

The turntable is rotatably installed in the second housing, and the two second push rods are symmetrically distributed on both sides of the turntable, and the second push rods are engaged with the turntable. The rod is in contact with the first push rod, and the two second push rods can move in different directions synchronously.

Further, the turntable includes a second gear and a wire wheel that are coaxially connected, at least part of the second push rod is meshed with the second gear, and the traction rope is wound around the wire wheel.

Further, the disposable section also includes a guide member provided on the second housing, two second push rods are distributed on both sides of the guide member, and a guide member is provided at the proximal end of the guide member. part, the cross-sectional area of the guide part gradually increases in the docking direction of the reusable section.

Further, a proximal end of the guide portion is provided with an arc-shaped third guide surface.

Furthermore, the disposable section further includes a mounting plate provided in the second housing, the two second push rods are slidably provided on the installation plate, and the guide member is fixedly provided on the installation plate.

In a third aspect, the present application also provides an endoscope, including the aforementioned endoscope handle.

The technical solution adopted by the present invention can achieve the following beneficial effects:

First, in the reusable section of the endoscope disclosed in this application, under the elastic action of the elastic member, the distal ends of the two first push rods come into contact and form a docking part. When docking with the disposable section, only the The docking part only needs to dock with the proximal end of the disposable section, that is, the two first push rods dock with the disposable section at the same position; compared with the traditional reusable section, the two force transmission components dock with the disposable section respectively. This method reduces the number of docking parts, improves the accuracy of docking, and reduces the difficulty of the docking process between reusable segments and disposable segments;

Second, the distal end of the first push rod is provided with a first guide surface, and the two first guide surfaces form a connecting mouth. During docking, as the reusable section and the disposable section move towards each other, the disposable section is guided The piece is easy to insert into the connecting nozzle, and separates the two first butting pieces to dock the two second push rods respectively. Based on the guiding function of the guide piece, the separation efficiency of the two first push rods can be improved and the docking can be improved. Smoothness and efficiency of reusable and disposable segments.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a reuse section in an embodiment of the present application;

Figure 2 is a schematic diagram of the internal structure of the reuse section in the embodiment of the present application;

Figure 3 is a partially enlarged schematic diagram of position A in Figure 2;

Figure 4 is one of the schematic diagrams of the internal structure of the disposable section according to the embodiment of the present application;

Figure 5 is the second schematic diagram of the internal structure of the disposable section according to the embodiment of the present application;

Figure 6 is a schematic diagram of the connection between the reusable section and the disposable section according to the embodiment of the present application;

Figure 7 is a partial enlarged schematic view of position B in Figure 6.

In the picture:

100-first housing, 110-first through hole; 200-driving mechanism, 210-driving part, 220-first gear; 310-first push rod, 311-first guide surface, 312-guide groove, 313 -Contact surface, 320-elastic member, 321-guide protrusion; 400-second housing, 410-second through hole; 510-second push rod, 520-turntable, 521-second gear, 522-line Wheel, 530-guide part, 531-guide part, 5311-third guide surface, 540-mounting plate; 600-traction rope.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without any creative work fall within the scope of protection of the present invention.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the figures so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in orders other than those illustrated or described herein, and that "first," "second," etc. are distinguished Objects are usually of one type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

In the present invention, "proximal end" and "distal end" refer to the far and near position of the structure relative to human body operation in the use environment, so as to facilitate the description of the positional relationship between components and facilitate understanding; "proximal end" The positional relationship with "remote" is relative, not absolute.

The reusable section of the endoscope handle, the endoscope handle and the endoscope provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings 1 to 7 through specific embodiments and application scenarios.

Referring to Figures 1 to 7, an embodiment of the present application discloses a reusable section of an endoscope. The reusable section includes a first housing 100, a driving mechanism 200, a first push rod 310 and an elastic member 320. The first housing Body 100 As a basic component of the reusable section, it can provide an installation foundation for the driving mechanism 200, the first push rod 310 and the elastic member 320. That is to say, the driving mechanism 200, the first push rod 310 and the elastic member 320 are all located on the first shell. Body 100.

The driving mechanism 200 includes a driving member 210 and a first gear 220. The first housing 100 is provided with a first accommodation space. The first gear 220 is rotatably installed in the first housing 100. The driving member 210 is connected to the first gear 220. , the driving member 210 can drive the first gear 220 to rotate; in the embodiment of the present application, the first gear 220 can be driven to rotate manually, for example, the driving member 210 can be a lever, a knob, etc., or it can be driven electrically. To drive the first gear 220 to rotate, for example, the driving member 210 can be a motor, a steering gear, etc. This application does not limit the specific form of the driving member 210 , as long as the first gear 220 can be driven to rotate through the driving member 210 .

The first push rod 310 is movably disposed in the first housing 100 . In the embodiment of the present application, the driving mechanism 200 drives the first push rod 310 to move relative to the first housing 100 . Specifically, the first push rod 310 is provided with a first tooth pattern section, and the first tooth pattern section meshes with the first gear 220. When the first gear 220 is driven by the driving member 210 to rotate, the first push rod 310 is relative to the first gear 220. The housing 100 moves.

In the embodiment of the present application, the two first push rods 310 are symmetrically distributed on both sides of the first gear 220. In this layout, when the first gear 220 rotates, the two first push rods 310 are synchronized and move in opposite directions. direction, thereby realizing the active bending section of the endoscope to bend in the preset direction; when the first gear 220 is driven to rotate in the reverse direction, the bending direction of the active complete section of the endoscope changes. This change in the bending direction can be reverse bend towards.

The elastic member 320 connects the first housing 100 and the first push rod 310. Under the elastic action of the elastic member 320, the distal ends of the two first push rods 310 come into contact with each other and form a docking part. The docking part is used to connect the disposable The proximal ends of the segments are docked. When the reusable segment and the disposable segment are docked, the two first push rods 310 are separated, and the elastic member 320 is compressed and deformed.

When the operating driver 210 drives the first gear 220 to rotate, the two first push rods 310 move in reverse directions synchronously. In a further technical solution, the first push rod 310 is provided with a guide groove 312, and the guide groove 312 moves along the first push rod 310. The rod 310 extends in the axial direction, and the elastic member 320 is provided with a guide protrusion 321, and the guide protrusion 321 slides with the guide groove 312; with this arrangement, the guide groove 312 has a structure relative to the first housing 100. According to the preset guide trajectory, the first push rod 310 moves along the extension direction of the guide groove 312, which has the characteristics of stable movement and high precision, and can avoid uncontrollable movement of the first push rod 310.

In an optional embodiment, the elastic member 320 can be an elastic piece, the guide protrusion 321 can be a spherical protrusion provided at the end of the elastic member 320, the guide groove 312 matches the outline of the spherical protrusion, and the guide protrusion 321 can be a spherical protrusion. When slidingly mating with the guide groove 312, at least part of the spherical protrusion is located in the guide groove 312. Using the spherical protrusion to fit in the arc-shaped guide groove 312 can improve the assembly efficiency of the first push rod 310 and the elastic member 320. At the same time, It can avoid stuck phenomenon.

In another optional embodiment, the elastic member 320 can also be an elastic cover provided at the distal end of the first housing 100 . The elastic cover can be an annular cover, and the outer peripheral portion of the elastic cover is in contact with the first shell 100 . The distal end is connected. A third through hole is provided in the middle of the elastic cover, and the distal ends of the two first push rods 310 in the abutting state pass through the third through hole; during docking, the two first push rods 310 The distal ends are separated, and the elastic cover undergoes elastic deformation; after the reusable section and the disposable section are separated, the elastic cover recovers its deformation so that the distal ends of the two first push rods 310 are brought into contact again and form a The docking part is to facilitate docking with the next disposable segment.

In the aforementioned solution, the distal ends of the two first push rods 310 are in contact with each other, so that the distal end surfaces of the two first push rods 310 are relatively deflected relative to a plane perpendicular to the axis of the first housing 100. During the repeated use section, When docking with the disposable section, the distal end surface of the first push rod 310 can play a guiding role, so that the docking component in the disposable section can slide between the distal end surfaces of the two first push rods 310 and The two first push rods 310 are separated; however, due to space size limitations, the deflection angle of the distal end surface of the first push rod 310 is small, causing the reusable section and the disposable section to move toward each other during the docking process. The friction resistance is relatively large, and there is a problem of inconvenient docking.

Therefore, in the embodiment of the present application, the distal end of the first push rod 310 is provided with a first guide surface 311 , and the first guide surface 311 is inclined relative to the axis of the first push rod 310 . Between the two first push rods 310 When the distal ends are in contact, the two first guide surfaces 311 form a connection nozzle 330, which is used to dock with the proximal end of the disposable section; with this arrangement, when the reusable section and the disposable section are docked, , the docking component of the disposable section is easier to slide relative to the first guide surface 311 to the position between the two first push rods 310, and the frictional resistance to the relative movement of the reusable section and the disposable section is smaller, making the docking process smoother. .

The first guide surface 311 may be the distal end surface of the first push rod 310. However, in this case, the cross-sectional area of the distal end of the first push rod 310 gradually decreases. If the load is too large, it is easy to cause the first The front end of the push rod 310 is broken, so that the first push rod 310 cannot always be in contact with the second push rod 510 after docking, which affects the stability of the transmission; therefore, in a further technical solution, the first push rod 310 cannot always be in contact with the second push rod 510. The distal end of the rod 310 is provided with a contact surface 313. The contact surface 313 is perpendicular to the axis of the first push rod 310. The contact surface 313 and the aforementioned first guide surface 311 together form the distal end surface of the first push rod 310; After the reusable section and the disposable section are docked, the two first push rods 310 can be in a parallel state, and the contact surface 313 can ensure that the first push rod 310 and the second push rod 510 have a large contact area, and can The axial thrust is transmitted stably, avoiding easy breakage caused by the front end surface of the first push rod 310 being completely formed by the first guide surface 311, and improving the stability of the transmission between the first push rod 310 and the second push rod 510. Of course, the aforementioned contact surface 313 is a preferred embodiment, and the first guide surface 311 being the distal end surface of the first push rod 310 should also be within the protection scope of this application.

In the reusable section of the endoscope handle disclosed in the embodiment of the present application, under the elastic action of the elastic member 320, the distal ends of the two first push rods 310 come into contact and form a docking portion with a connection nozzle 330. When the disposable section is docked, it is only necessary to dock the docking part with the proximal end of the disposable section, that is, the two first push rods 310 are docked with the disposable section at the same position; compared with the two traditional reusable sections, The way in which each force transmission component is docked with the disposable section respectively reduces the number of docking parts that need to be docked, improves the accuracy of docking, reduces the difficulty of docking the reusable section and the disposable section, and reduces the docking workload.

This application also provides an endoscope handle. The endoscope handle includes a disposable segment and the aforementioned reusable segment. The disposable segment and the reusable segment are detachably connected. In the embodiment of the present application, the disposable segment and the reusable segment are detachably connected. The use sections can be detachably connected using threaded connectors, snap connections, etc. This application does not limit the specific connection methods of the disposable sections and the reusable sections.

In the embodiment of the present application, the disposable section includes a second housing 400, a second push rod 510 and a turntable 520. The second push rod 510 is disposed on the second housing 400 movably along its axial direction, and the turntable 520 rotates. In the second housing 400, the traction rope 600 connecting the active bending section of the endoscope is connected to the turntable 520. When the reusable section and the disposable section are connected, the second push rod 510 abuts the first push rod 310, and the first push rod 510 abuts against the first push rod 310. The rod 310 can push the second push rod 510 to move, thereby driving the turntable 520 to rotate, so that the traction rope 600 pulls the active bending section of the endoscope to move in a preset direction, and when the rotation direction of the turntable 520 changes, the endoscope actively bends The bending direction of the segment changes.

Specifically, in this embodiment, the second push rod 510 is provided with a second tooth pattern section, and the turntable 520 includes a second gear 521 and a wire wheel 522 that are coaxially connected. Through the connection between the second tooth pattern section and the second gear 521 Engagement is achieved to realize the engagement between the second push rod 510 and the turntable 520, and the traction rope 600 connected to the active bending section of the endoscope is wrapped around the wire wheel 522; when the first push rod 310 pushes one of the second push rods 510 to move, the second push rod 510 moves. The push rod 510 drives the turntable 520 to rotate, the other second push rod 510 moves in the opposite direction synchronously, and the wire wheel 522 rotates and pulls the traction rope 600 to realize the active bending section of the endoscope to bend in the preset direction.

In the foregoing solution, the traction rope 600 is wound around the wire wheel 522 to pull the active bending section of the endoscope. Of course, in addition to the aforementioned way of connecting the traction rope 600 to the wire wheel 522, in another optional embodiment, the traction rope 600 may include a first traction section and a second traction section, and the first traction section and the second traction section may They are respectively connected to two second push rods 510, and the movement of the second push rods 510 is linear movement. In this case, the active bending section of the endoscope can also be pulled; the embodiment of the present application is not limited to the traction rope 600 The specific connection method in the second housing 400 is as long as the reciprocating motion of the two second push rods 510 can realize the bending of the active bending section of the traction rope 600 in two directions.

The disposable section also includes a guide 530. Two second push rods 510 are distributed on both sides of the guide 530. When the reusable section and the disposable section are docked, the aforementioned docking component of the disposable section can be the guide. 530. The front end surface of the first housing 100 is provided with a first through hole 110, and the proximal end surface of the second housing 400 is provided with a second through hole 410. The first through hole 110 and the second through hole 410 are adapted to each other. The docking portion of the reusable section is docked with the guide 530 of the disposable section at two through holes.

Specifically, a guide portion 531 is provided at the proximal end of the guide member 530, and the cross-sectional area of the guide portion 531 gradually increases in the docking direction of the reuse section. In the embodiment of the present application, the guide part 531 matches the connection nozzle 330 . For example, the guide part 531 is a wedge-shaped structure matching the connection nozzle 330 . The guide part 531 has two axially inclined third members 530 . Two guide surfaces; with this arrangement, during the process of docking the reusable section and the disposable section, the connecting nozzle 330 will first contact the guide portion 531, and the two first push rods 310 in the abutting state pass through the second guide surface. guide and slide respectively to the two second push rods 510 are in contact with each other, the two first push rods 310 are separated, and the second push rod 510 can be pushed by the first push rod 310 to move.

In a further technical solution, the proximal end of the guide part 531 is provided with an arc-shaped third guide surface 5311. When the guide part 531 comes into contact with the connection nozzle 330, the arc-shaped third guide surface 5311 first contacts the nozzle 330. At the bottom of the groove of the nozzle 330, the first guide surface 311 slides relative to the third guide surface 5311, which easily separates the two first push rods 310 and avoids high resistance and easy docking caused by slight misalignment in the early stage of docking. Stuck situation.

In the embodiment of the present application, the disposable section also includes a mounting plate 540 provided in the second housing 400. The mounting plate 540 can provide an installation basis for the guide 530 and the two second push rods 510. The guide 530 can be connected with The mounting plate 540 is connected and fixed, for example, in an integrated manner. The two second push rods 510 are slidably disposed on the mounting plate 540. Specifically, the mounting plate 540 is provided with a push rod mounting hole that penetrates the mounting plate 540. The two second push rods 510 are connected and fixed. The rod 510 slides into the pushrod mounting hole.

An embodiment of the present application also discloses an endoscope, including the aforementioned endoscope handle.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be covered by the protection scope of the present invention.

Claims (10)

A reusable section of an endoscope handle, which is characterized in that it includes: first shell (100); First push rod (310), two first push rods (310) are movably provided on the first housing (100); Driving mechanism (200), the two first push rods (310) are connected to the driving mechanism (200) respectively, and the driving mechanism (200) drives the two first push rods (310) in different directions simultaneously. move; Elastic member (320), the elastic member (320) connects the first housing (100) and the first push rod (310), so that the distal ends of the two first push rods (310) offset each other. Connect and form a docking part. The reusable section of the endoscope handle according to claim 1, characterized in that the distal end of the first push rod (310) is provided with a first guide surface (311), and the first guide surface (311 ) is arranged obliquely relative to the axis of the first push rod (310). When the distal ends of the two first push rods (310) are in contact, the two first guide surfaces (311) form a contact Leading mouth (330). The reusable section of the endoscope handle according to claim 1, characterized in that the first push rod (310) is provided with a guide groove (312), and the guide groove (312) extends along the first push rod. The rod (310) extends axially, and the elastic member (320) is provided with a guide protrusion (321), and the guide protrusion (321) is in sliding fit with the guide groove (312). The reusable section of the endoscope handle according to claim 1, wherein the elastic member (320) includes an elastic cover provided at the distal end of the first housing (100), and the elastic cover The outer peripheral part is connected to the first housing (100), and a third through hole for the two first push rods (31) to pass through is provided in the middle of the elastic cover. An endoscope handle, characterized in that it includes a disposable section and a reusable section according to any one of claims 1 to 4, the disposable section is detachably connected to the reusable section, and the disposable section It includes a second housing (400), a second push rod (510) and a turntable (520), wherein: The turntable (520) is rotatably installed in the second housing (400), the two second push rods (510) are symmetrically distributed on both sides of the turntable (520), and the second push rods (510) are symmetrically distributed on both sides of the turntable (520). The rod (510) is engaged with the turntable (520), the second push rod (510) is in contact with the first push rod (310), and the two second push rods (510) are in contact with the first push rod (310). The push rod (510) can move in different directions synchronously, and the traction rope (600) connected to the active bending section of the endoscope is connected to the second push rod (510) or the turntable (520). The endoscope handle according to claim 5, characterized in that the turntable (520) includes a coaxially connected second gear (521) and a wire wheel (522), and the second push rod (510) At least partially meshed with the second gear (521), the traction rope (600) is wound around the wire wheel (522). The endoscope handle according to claim 5, wherein the disposable section further includes a guide member (530) provided on the second housing (400), and two second push rods ( 510) are distributed on both sides of the guide member (530). The proximal end of the guide member (530) is provided with a guide portion (531). In the docking direction of the reusable section, the guide portion (531 ) the cross-sectional area gradually increases. The endoscope handle according to claim 7, characterized in that the proximal end of the guide portion (531) is provided with an arc-shaped third guide surface (5311). The endoscope handle according to claim 7, characterized in that the disposable section further includes a mounting plate (540) provided in the second housing (400), and two second push rods (510) is slidably mounted on the mounting plate (540), and the guide (530) is fixedly mounted on the mounting plate (540). An endoscope, characterized by comprising the endoscope handle according to any one of claims 5 to 9.