Endoscope sheath and endoscope system

Abstract

The utility model provides an endoscope sheath and an endoscope system. The endoscope sheath comprises a main body part, a fastener and a locking plate, the fastener is fixed on the main body part, and the main body part and the fastener form a guide structure; the locking plate is guided by the guide structure so as to move between a first position and a second position; when the locking plate is located at the first position, the locking plate can lock an endoscope installed on the endoscope sheath. When the locking plate is located at the second position, the endoscope is allowed to move out of the endoscope sheath; wherein the locking plate comprises a guide part, and the guide part is used for being matched with at least part of the sliding contour of the endoscope, so that when the endoscope moves in the first direction, the endoscope can drive the locking plate from a first position to a second position; after the endoscope is inserted into the sheath, the locking plate moves from the second position to the first position, and the position of the endoscope is limited through the guide part. According to the endoscope sheath, the guide part of the endoscope sheath is improved, so that the pushing force generated when an endoscope is inserted into the endoscope sheath is reduced, and the service life of the endoscope sheath is prolonged.

Description

Technical Field

[0001] This disclosure relates to a sheath and endoscope system, belonging to the field of medical device technology. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] During use, medical endoscopes need to be inserted into the patient's body through a sheath to establish a working channel, and a stable and reliable positioning and connection is formed at the interface of the sheath.

[0004] Currently, the mainstream mirror sheaths on the market come in two forms: rotating locking interface and self-locking interface.

[0005] In a rotary locking type endoscope sheath, the locking plate is threaded to the sheath body. The endoscope is inserted by aligning the groove at the endoscope interface with the positioning block at the endoscope interface. The operator then rotates a lever clockwise, causing the locking plate to move axially. Simultaneously, the two locking surfaces on the outer end face of the locking plate screw into the locking groove of the endoscope, tightening the endoscope axially. A certain force is then applied to the lever to tighten the locking plate, thus locking the endoscope. This type of endoscope sheath requires manual application of locking force during use, which is cumbersome, wastes the surgeon's time, and involves many parts, a complex assembly process, and high manufacturing costs.

[0006] Existing technology CN219782490U discloses an endoscope sheath locking structure. Specifically, this prior art discloses an endoscope sheath with a self-locking interface. In use, the endoscope is inserted by aligning the groove at the endoscope interface with the positioning block of the sheath interface. After the endoscope contacts the inclined surface of the locking plate, the endoscope is pushed forcefully. The locking plate, subjected to a downward force, moves downward along the fixing pin. After the endoscope is pushed into place, the locking plate automatically springs back under the action of a spring, and the locking surface engages with the locking groove of the endoscope, achieving automatic locking of the endoscope. The inclined surface of the locking plate in this structure is a traditional conical inclined surface, which provides significant resistance when inserting the endoscope, requiring a large force to push the endoscope to displace the locking plate. During insertion, the contact area between the inclined surface and the endoscope is small, and repeated use easily leads to wear and dents on the inclined surface. In severe cases, it can jam the endoscope, preventing further insertion and resulting in a short lifespan for the endoscope sheath. Furthermore, this structure has many parts, a complex assembly process, and high manufacturing costs.

[0007] In addition, prior art CN217792955U also discloses a locking mechanism and an endoscope device. The locking mechanism includes a first connector, a second connector, a locking sleeve assembly, and a positioning assembly. The outer surface of the first connector has a circumferentially extending groove. The second connector abuts against the first connector and has a first limiting protrusion. The locking sleeve assembly is fitted over the first and second connectors. The locking sleeve assembly has a second limiting protrusion and a clearance groove. The locking sleeve assembly has a locked position and an unlocked position. In the locked position, the first limiting protrusion and the second limiting protrusion engage; in the unlocked position, the second limiting protrusion separates from the first limiting protrusion. One end of the positioning assembly penetrates the inner surface of the locking sleeve assembly and extends into the groove. When the locking sleeve assembly enters the locked position, one end of the positioning assembly slides to one end of the groove; when the locking sleeve assembly enters the unlocked position, one end of the positioning assembly slides to the other end of the groove. However, the existing technology has many parts, a complex assembly process, and complicated operation when locking or unlocking the endoscope. Utility Model Content

[0008] This disclosure provides a sheath and an endoscope system.

[0009] According to one aspect of this disclosure, a sheath is provided for mounting an endoscope, comprising:

[0010] The main body includes a central axis, which allows the endoscope to be inserted into and fixed in a sheath when the endoscope moves along the central axis in a first direction, and to be removed from the sheath when the endoscope moves along the central axis in a second direction.

[0011] A fastener, the fastener being fixed to the main body portion, and the main body portion and the fastener forming a guide structure; and

[0012] A locking plate, guided by the guide structure, is movable between a first position and a second position; wherein, when the locking plate is in the first position, the locking plate is capable of locking an endoscope mounted in a sheath; and when the locking plate is in the second position, the endoscope is allowed to be removed from the sheath.

[0013] The locking plate includes a guide portion, which is used to engage at least a portion of the sliding profile of the endoscope so that when the endoscope moves in a first direction, the endoscope can drive the locking plate from a first position to a second position; when the endoscope is inserted into the sheath, the locking plate moves from the second position to the first position and restricts the position of the endoscope by means of the guide portion.

[0014] According to at least one embodiment of the mirror sheath of the present disclosure, the guide portion is formed as two, and the two guide portions are respectively located at both ends of the inner flange portion in the circumferential direction.

[0015] According to at least one embodiment of the endoscope sheath of the present disclosure, the locking plate further includes an inner flange portion, the guide portion is formed as a guide groove, and the corner portion of the sliding profile of the endoscope is slidably disposed in the guide groove and guided by the guide groove.

[0016] According to at least one embodiment of the mirror sheath of the present disclosure, the guide portion includes a first guide surface, a second guide surface, and a third guide surface, wherein the first guide surface, the second guide surface, and the third guide surface are all formed as the wall surface of a guide groove.

[0017] According to at least one embodiment of the endoscope sheath of the present disclosure, the first guide surface is disposed adjacent to the inner flange portion, wherein the first guide surface is configured to contact at least a portion of the sliding profile of the endoscope, such that the sliding profile of the endoscope can apply a thrust to the first guide surface and cause the locking plate to move from a first position to a second position.

[0018] According to at least one embodiment of the mirror sheath of the present disclosure, the first guide surface is inclined and extends from one end of the locking plate along a first direction; wherein, along the first direction, the first guide surface extends inclined upward.

[0019] According to at least one embodiment of the endoscope sheath of the present disclosure, the second guide surface is located between the first guide surface and the third guide surface. When the endoscope is inserted into the endoscope sheath, the corner of the sliding profile of the endoscope slides along the second guide surface, so that the sliding profile of the endoscope can apply a thrust to the second guide surface and cause the locking plate to move from the first position to the second position.

[0020] According to at least one embodiment of the mirror sheath of the present disclosure, the second guide surface is inclined and extends from one end of the locking plate along a first direction, and the second guide surface extends upward along the first direction.

[0021] According to at least one embodiment of the mirror sheath of the present disclosure, the third guide surface is inclined and at least a portion of the third guide surface is constricted inward along a first direction.

[0022] According to at least one embodiment of the mirror sheath of the present disclosure, the guide structure is formed as a guide groove, and a portion of the surface of the fastener is formed as a sidewall of the guide groove.

[0023] According to at least one embodiment of the mirror sheath of the present disclosure, the main body includes a base and an extension connected to the base, the extension having a stepped structure formed thereon, the stepped structure forming the guide groove with the fastener.

[0024] According to at least one embodiment of the mirror sheath of the present disclosure, the stepped structure includes a first guide surface and a second guide surface, both of which are planar, the first guide surface being formed as a sidewall of a guide groove, and the second guide surface being formed as a bottom wall of the guide groove.

[0025] According to at least one embodiment of the mirror sheath of the present disclosure, one end of the extension is connected to the base, and the other end of the extension is connected to one end of the threaded segment. The outer peripheral surface of the threaded segment is formed with an external thread, and the fastener is formed with an internal thread. The fastener is fixed to the threaded segment by the engagement of the internal thread and the external thread, wherein a portion of the surface of the fastener is formed as a sidewall of a guide groove.

[0026] According to at least one embodiment of the mirror sheath of the present disclosure, the inner surface of the locking plate is formed with a guide member, the guide member being guideable by the guide structure, and the guide member and the guide structure being able to slide relative to each other.

[0027] According to at least one embodiment of the mirror sheath of the present disclosure, the guide member is formed as a rib structure, the rib structure including a first surface and a second surface in the direction of the central axis, wherein the first surface of the rib structure is used to mate with a first guide surface, and the second surface of the rib structure is used to mate with the surface of a fastener.

[0028] According to at least one embodiment of the mirror sheath of the present disclosure, the rib structure includes a guide plane parallel to a central axis, the guide plane being slidably fitted with a second guide surface.

[0029] According to at least one embodiment of the mirror sheath of the present disclosure, an elastic member is provided between the main body and the locking plate, the elastic member being in a pre-compressed state so that the locking plate has a tendency to move from a second position to a first position.

[0030] According to another aspect of this disclosure, an endoscope system is provided, which includes the aforementioned sheath.

[0031] Beneficial effects: In the endoscope sheath disclosed herein, by improving the guide portion, the sliding resistance at the contact position between the endoscope and the locking plate when the endoscope is pushed in is reduced, resulting in less resistance during endoscope installation; it also avoids the technical problem of easy wear on the guide bevel in the prior art; when fixing the position of the endoscope, the endoscope can be fixed by the guide portion, so that the endoscope can be firmly fixed. Attached Figure Description

[0032] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0033] Figure 1 This is a schematic diagram of the structure of an endoscope in the existing technology.

[0034] Figure 2 This is a schematic diagram of an endoscope system according to one embodiment of the present disclosure.

[0035] Figure 3 This is an exploded structural diagram of an endoscope system according to one embodiment of the present disclosure.

[0036] Figure 4 This is a cross-sectional structural schematic diagram of an endoscope system according to one embodiment of the present disclosure.

[0037] Figure 5 This is a cross-sectional structural schematic diagram of an endoscope system according to one embodiment of the present disclosure from another angle.

[0038] Figure 6 This is an exploded structural diagram of a mirror sheath according to one embodiment of the present disclosure.

[0039] Figure 7 This is a structural schematic diagram of a locking plate according to one embodiment of the present disclosure.

[0040] Figure 8 This is a schematic diagram of the cooperation structure between an endoscope and a locking plate according to one embodiment of the present disclosure.

[0041] The specific labels in the attached figures are as follows:

[0042] 100 endoscopes

[0043] 110 Fixing plate

[0044] 111 Part One

[0045] 112 Part Two

[0046] 113 corner

[0047] 114 Positioning slot

[0048] 200 mirror sheaths

[0049] 210 Main Body

[0050] 211 Base

[0051] 212 Extension

[0052] 213 First guiding surface

[0053] 214 Second guide surface

[0054] 215 threaded section

[0055] 216 Positioning Components

[0056] 220 Fasteners

[0057] 230 Locking Plate

[0058] 231 Guide component

[0059] 231A Second Guide Surface

[0060] 232 Guidance Department

[0061] 232A First Guiding Surface

[0062] 232B Second Guiding Surface

[0063] 232C Third Guiding Surface

[0064] 233 Inner flange

[0065] 240 Elastic component. Detailed Implementation

[0066] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.

[0067] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0068] Unless otherwise stated, the exemplary implementations / embodiments shown are to be understood as providing exemplary features of various details that provide ways in which the technical concepts of this disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of various implementations / embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of this disclosure.

[0069] The use of crosshairs and / or shading in the accompanying drawings is generally used to clarify the boundaries between adjacent components. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the illustrated components, or any other characteristics, properties, etc., of the components. Furthermore, in the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0070] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.

[0071] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0072] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0073] Figure 1 This is a schematic diagram of the structure of an endoscope in the existing technology.

[0074] like Figure 1 As shown, the endoscope 100 in the prior art generally includes a fixing plate 110, and the endoscope 100 is locked by the cooperation between the fixing plate 110 and the sheath 200.

[0075] Specifically, the fixation piece 110 of this disclosure includes a generally circular first portion 111 and a second portion 112 extending radially outward from the first portion 111, wherein two second portions 112 are provided and are symmetrically arranged. Each second portion 112 includes a corner portion 113. Thus, the outer contour of the fixation piece 110 of this disclosure is the sliding contour of the endoscope 100.

[0076] Furthermore, the first part 111 is provided with a positioning groove 114, which penetrates the first part 111 along the thickness direction of the first part 111.

[0077] Since the endoscope 100 is a structure already existing in the art, this disclosure will not elaborate on it further.

[0078] Figure 2 This is a schematic diagram of an endoscope system according to one embodiment of the present disclosure. Figure 3 This is an exploded structural diagram of an endoscope system according to one embodiment of the present disclosure. Figure 4 This is a cross-sectional structural schematic diagram of an endoscope system according to one embodiment of the present disclosure. Figure 5 This is a cross-sectional structural schematic diagram of an endoscope system according to one embodiment of the present disclosure from another angle.

[0079] like Figures 2 to 5As shown, the endoscope system of this disclosure includes an endoscope 100 and a sheath 200, wherein the sheath 200 is used to mount the endoscope 100. In other words, when using the endoscope system of this disclosure, the endoscope 100 can be inserted into the sheath 200, at which time the sheath 200 can lock the endoscope 100. Accordingly, when it is necessary to remove the endoscope 100 from the sheath 200, the locking plate 230 described below can be actuated, thereby releasing the endoscope 100 from the sheath 200, and then the endoscope 100 can be pulled out from the sheath 200.

[0080] Specifically, the sheath 200 disclosed herein may include components such as a main body 210, a fastener 220, and a locking plate 230.

[0081] In this disclosure, the main body 210 includes a central axis, so as to Figures 2 to 5 The direction of the central axis can be a horizontal straight line in the left-right direction. When the endoscope 100 moves along the central axis in a first direction, it can be inserted into and fixed in the sheath 200; when the endoscope 100 moves along the central axis in a second direction, it can be removed from the sheath 200; correspondingly, with Figures 2 to 5 The directions shown are as follows: the first direction is to the left, and the second direction is to the right. That is, the first and second directions of this disclosure are opposite directions. Furthermore, the direction of the central axis of this disclosure may include both the first and second directions.

[0082] The main body 210 of this disclosure has a central hole, the axis of which is the aforementioned central axis. Furthermore, at least a portion of the endoscope 100 can pass through this central hole. More preferably, as... Figure 4 and Figure 5 As shown, the right end of the central hole of the main body 210 of this disclosure is formed into a tapered hole, and an annular groove is formed on the wall of the tapered hole, and an O-ring is provided in the annular groove. When at least a portion of the endoscope 100 is inserted into the central hole, the tapered portion of the endoscope 100 can fit tightly against the wall of the tapered hole, and a sealed connection is formed between the main body 210 and the endoscope 100 by the O-ring.

[0083] like Figures 2 to 5 As shown, the fastener 220 is fixed to the main body 210, and the main body 210 and the fastener 220 form a guide structure; correspondingly, under the guiding action of this guide structure, the locking plate 230 can be driven and move in the vertical direction (with... Figure 3 and Figure 4 (direction) movement.

[0084] Specifically, the locking plate 230 is guided by a guide structure to move between a first position and a second position; wherein, when the locking plate 230 is in the first position, the locking plate 230 can lock the endoscope 100 mounted in the sheath 200; when the locking plate 230 is in the second position, the endoscope 100 is allowed to be removed from the sheath 200; in other words, the locking plate 230 of this disclosure can be in the first position and the second position when moving in the vertical direction. The first position is higher than the second position.

[0085] For example, when the endoscope 100 is installed in the sheath 200, a leftward force can be applied to the endoscope 100. This causes the endoscope 100 to drive the locking plate 230 downward, moving it from a first position to a second position. When the endoscope 100 is inserted into a preset position, the locking plate 230 moves upward under the restoring force provided by the elastic member 240, moving from the second position to the first position, thereby locking the endoscope 100 in the preset position. Conversely, when removing the endoscope 100 from the sheath 200, a downward force can be applied to the locking plate 230, causing it to move downward from the first position to the second position. At this time, a rightward force can be applied to the endoscope 100, removing it from the sheath 200. Meanwhile, when the force applied to the locking plate 230 disappears, the locking plate 230 can move upward to the first position under the action of the restoring force provided by the elastic member 240, and stay in the first position.

[0086] Figure 6 This is an exploded structural diagram of a mirror sheath according to one embodiment of the present disclosure.

[0087] like Figures 4 to 6 As shown, the guide structure of this disclosure is formed as a guide groove; moreover, the main body 210 of this disclosure includes a base 211 and an extension 212 connected to the base 211. The extension 212 is formed with a stepped structure, which together with the fastener 220 forms the guide groove.

[0088] Specifically, such as Figure 6 As shown, the stepped structure includes a first guide surface 213 and a second guide surface 214. Both the first guide surface 213 and the second guide surface 214 are planar. The first guide surface 213 forms the sidewall of the guide groove, and the second guide surface 214 forms the bottom wall of the guide groove. Preferably, the first guide surface 213 is arranged substantially perpendicular to the central axis. The second guide surface 214 is arranged substantially parallel to the central axis and is arranged substantially vertically.

[0089] In this disclosure, two stepped structures are provided, symmetrically arranged, so that the locking plate 230 can slide stably in the vertical direction under the guidance of the guide structure. Accordingly, the locking plate 230 of the mirror sheath 200 of this disclosure is directly mounted and positioned on the main body 210, with high dimensional accuracy and balanced sliding force.

[0090] One end of the extension 212 of this disclosure is connected to the base 211, and the other end of the extension 212 is connected to one end of the threaded section 215. At this time, the outer peripheral surface of the threaded section 215 has an external thread, and the fastener 220 has an internal thread. The fastener 220 can be fixed to the threaded section 215 (i.e., fixed to the main body 210) by a threaded connection. A portion of the surface of the fastener 220 forms a sidewall of a guide groove. The fastener 220 can make pressure contact with the end face of the other end of the extension 212, thereby preventing the fastener 220 from loosening from the main body 210. Accordingly, the mirror sheath 200 of this disclosure can be installed and removed by the tightening action of the fastener 220, making the installation and removal process very convenient.

[0091] See again Figure 6 The other end of the threaded segment 215 of this disclosure is provided with a positioning member 216, which includes a protrusion extending from the threaded segment 215 in a second direction. Thus, when the endoscope 100 is installed in the sheath 200, the positioning member 216 can be inserted into the positioning groove 114 of the endoscope 100, thereby restricting the position of the endoscope 100 in the circumferential direction.

[0092] Figure 7 This is a structural schematic diagram of a locking plate according to one embodiment of the present disclosure. Figure 8 This is a schematic diagram of the cooperation structure between an endoscope and a locking plate according to one embodiment of the present disclosure.

[0093] like Figures 2 to 8 As shown, the inner surface of the locking plate 230 of this disclosure has a guide member 231. The guide member 231 can be guided by the guide structure, and the guide member 231 and the guide structure can slide relative to each other. Accordingly, the locking plate 230 of this disclosure can only move in the up and down direction.

[0094] Specifically, such as Figure 7 As shown, the guide member 231 is formed as a rib structure, which includes a first surface and a second surface in the direction of the central axis (including a first direction and a second direction). The first surface of the rib structure is used to cooperate with the first guide surface 213, and the second surface of the rib structure is used to cooperate with the surface of the fastener 220.

[0095] More specifically, the rib structure is configured as two, each rib structure including a guide plane 231A parallel to the central axis, the guide plane 231A being slidably attached to the second guide surface 214.

[0096] like Figure 4 As shown, an elastic member 240 is provided between the main body 210 and the locking plate 230 of this disclosure. The elastic member 240 is in a pre-compressed state so that the locking plate 230 has a tendency to move from the second position to the first position.

[0097] See again Figure 7 The locking plate 230 of this disclosure includes a guide portion 232 and an inner flange portion 233. The guide portion 232 engages at least partially with the sliding profile of the endoscope 100, such that when the endoscope 100 moves in a first direction, the endoscope 100 can drive the locking plate 230 from a first position to a second position. When the endoscope 100 is inserted into the sheath 200, the locking plate 230 moves from the second position to the first position and restricts the position of the endoscope 100 via the guide portion 232. In a preferred embodiment, the inner flange portion 233 of this disclosure contacts the fixing plate 110 only at the portion connected to the guide portion 232, and applies force to the fixing plate 110 to lock the endoscope. Between the two ends of the inner flange portion 233 in the circumferential direction, the inner flange portion 233 does not contact the fixing plate 110. In other words, after the endoscope 100 of this disclosure is installed in the sheath, only the corner 113 of the endoscope's fixing piece 110 is fixed, thereby enabling the endoscope of this disclosure to be disassembled with only a small amount of force.

[0098] In other words, unlike the prior art, when the endoscope 100 is inserted into the endoscope sheath 200, the endoscope 100 drives the locking plate 230 only through the drive guide 232, which reduces the sliding resistance at the contact position between the endoscope 100 and the locking plate when it is pushed in, resulting in less resistance during the installation of the endoscope 100. It also avoids the technical problem of easy wear on the guide slope in the prior art. When fixing the position of the endoscope 100, the endoscope 100 can be fixed by the guide 232, or the endoscope 100 can be fixed by the guide 232 and the inner flange 233 together, so that the endoscope 100 can be firmly fixed.

[0099] In a preferred embodiment, the guide portion 232 is formed as two, with the two guide portions 232 located at the two ends of the inner flange portion 233 in the circumferential direction, thereby enabling at least two portions (i.e. two second portions) of the sliding profile of the endoscope 100 to push the locking plate 230 to produce vertical movement.

[0100] In this disclosure, the guide portion 232 is formed as a guide groove, and the corner of the sliding profile of the endoscope 100 can be slidably disposed in the guide groove and guided by the guide groove. In particular, the guide groove can also be referred to as a contour groove, which can correspond to the structure of the corner of the sliding profile of the endoscope 100, and enable the sliding profile of the endoscope 100 to be stably located in the contour groove.

[0101] like Figure 6 and Figure 7 As shown, the guide portion 232 of this disclosure may include a first guide surface 232A, a second guide surface 232B, and a third guide surface 232C, wherein the first guide surface 232A, the second guide surface 232B, and the third guide surface 232C are all formed as the wall surface of the guide groove. In this disclosure, the first guide surface 232A, the second guide surface 232B, and the third guide surface 232C are formed as continuous curved surfaces.

[0102] Specifically, a first guide surface 232A is disposed adjacent to the inner flange portion 233. The first guide surface 232A extends from one end of the locking plate 230 along a first direction and extends upwardly along the first direction. Thus, when the first guide surface 232A contacts at least a portion of the sliding profile of the endoscope 100, the sliding profile of the endoscope 100 can apply a thrust to the first guide surface 232A, causing the locking plate 230 to move from a first position to a second position.

[0103] Furthermore, the second guide surface 232B of this disclosure is located between the first guide surface 232A and the third guide surface 232C. The second guide surface 232B extends from one end of the locking plate 230 along a first direction and extends upward along the first direction. Therefore, when the second guide surface 232B contacts the corner of the sliding profile of the endoscope 100, the sliding profile of the endoscope 100 can apply a pushing force to the second guide surface 232B, causing the locking plate 230 to move from the first position to the second position. Moreover, when the endoscope 100 slides relative to the locking plate 230, the corner of the sliding profile of the endoscope 100 can always slide along the second guide surface 232B, thereby making the engagement and positioning of the endoscope more accurate. That is, the guide portion 232 of this disclosure can limit the circumferential direction of the endoscope 100 to prevent the endoscope from rotating during insertion into the sheath.

[0104] In addition, the third guide surface 232C of this disclosure is also inclined. For example, along the first direction, at least a portion of the third guide surface 232C is inwardly contracted. That is, in this direction, the third guide surface 232C is inclined toward the axis of the locking plate 230. Thus, the corner 113 of the fixing piece 110 can be prepositioned by the third guide surface 232C. That is, when the corner 113 contacts the third guide surface 232C, the third guide surface 232C can restrict the rotation of the endoscope.

[0105] In the endoscope sheath disclosed herein, both the main body 210 and the locking plate 230 are integrally machined, simplifying the manufacturing process and saving manufacturing time and costs. The guide portion 232 of the locking plate 230 forms a contoured guide groove through its inclined surface feature, reducing resistance when inserting the endoscope 100. Furthermore, the endoscope sheath of this disclosure can automatically lock the endoscope, saving the surgeon's effort and solving the problems of existing endoscope locking interfaces requiring manual application of locking force, which is cumbersome, or requiring significant force to install the endoscope, which is inconvenient, and also involves many parts, complex assembly processes, and high manufacturing costs.

[0106] Moreover, the design of the contoured guide groove increases the contact area between the locking plate 230 and the endoscope 100, making it less likely for the first guide surface 232A, the second guide surface 232B, and the third guide surface 232C of the guide groove to get stuck on the endoscope and cause wear and dents, resulting in a longer service life.

[0107] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0108] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0109] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A scope sheath for mounting an endoscope, characterized by, The utility model relates to a locking plate for a medical endoscope, comprising: a body portion including a central axis, the endoscope being capable of being inserted into and fixed in a sheath when the endoscope is moved along the central axis in a first direction; the endoscope being capable of being removed from the sheath when the endoscope is moved along the central axis in a second direction; a fastener fixed to the body portion and forming a guide structure with the body portion; and a locking plate guided by the guide structure and capable of moving between a first position and a second position, wherein the locking plate is capable of locking the endoscope installed in the sheath when the locking plate is in the first position, and the locking plate allows the endoscope to be removed from the sheath when the locking plate is in the second position. The locking plate includes a guide portion configured to cooperate with at least a portion of a sliding profile of the endoscope such that the endoscope is capable of driving the locking plate from the first position to the second position when the endoscope is moved in the first direction, and the locking plate is capable of moving from the second position to the first position after the endoscope is inserted into the sheath and limiting the position of the endoscope by the guide portion. The locking plate further includes an inner flange portion, and the guide portion is formed in two, with each of the two guide portions located at two ends in a circumferential direction of the inner flange portion.

2. The speculum according to claim 1, wherein, The guide portion is formed as a guide groove, and a corner of the sliding profile of the endoscope is capable of being slidably arranged in the guide groove and guided by the guide groove.

3. The speculum according to claim 2, wherein, The guide portion includes a first guide surface, a second guide surface, and a third guide surface, and each of the first guide surface, the second guide surface, and the third guide surface is formed as a wall surface of the guide groove.

4. The speculum according to claim 3, wherein, The first guide surface is arranged adjacent to the inner flange portion, and the first guide surface is configured to contact at least a portion of the sliding profile of the endoscope such that the sliding profile of the endoscope is capable of applying a pushing force to the first guide surface and moving the locking plate from the first position to the second position.

5. The speculum according to claim 4, wherein, The first guide surface is arranged to be inclined and extend in the first direction from one end of the locking plate, and the first guide surface extends upwardly in the first direction.

6. The speculum according to claim 4, wherein, The second guide surface is located between the first guide surface and the third guide surface, and a corner of the corner of the sliding profile of the endoscope slides along the second guide surface during insertion of the endoscope into the sheath such that the sliding profile of the endoscope is capable of applying a pushing force to the second guide surface and moving the locking plate from the first position to the second position.

7. The speculum according to claim 4, wherein, The second guide surface is arranged to be inclined and extend in the first direction from one end of the locking plate, and the second guide surface extends upwardly in the first direction.

8. The speculum according to claim 4, wherein, The third guide surface is arranged to be inclined, and at least a portion of the third guide surface is inwardly retracted in the first direction.

9. The speculum according to claim 4, wherein, The guide structure is formed as a guide groove, and a portion of a surface of the fastener is formed as a side wall of the guide groove.

10. The speculum according to claim 1, wherein, The body portion includes a base portion and an extension portion connected to the base portion, and a stepped structure is formed on the extension portion, and the stepped structure forms the guide groove with the fastener.

11. The speculum according to claim 10, wherein, ​ 12. The speculum according to claim 11, wherein, The step structure includes a first guide surface and a second guide surface, both of which are formed in a planar shape, the first guide surface is formed as a side wall of the guide groove, and the second guide surface is formed as a bottom wall of the guide groove.

13. The speculum according to claim 11, wherein, One end of the extension part is connected with the base part, the other end of the extension part is connected with one end of the threaded segment, an outer peripheral surface of the threaded segment is formed with external threads, the fastener is formed with internal threads, the fastener is fixed to the threaded segment by cooperation of the internal threads and the external threads, and part of a surface of the fastener is formed as a side wall of the guide groove.

14. The speculum according to claim 10, wherein, An inner surface of the locking plate is formed with a guide part, the guide part can be guided by the guide structure and can slide relative to the guide structure.

15. The speculum according to claim 14, wherein, The guide part is formed as a rib structure, the rib structure includes a first surface and a second surface in the direction of the central axis, the first surface of the rib structure is used to cooperate with the first guide surface, and the second surface of the rib structure is used to cooperate with the surface of the fastener.

16. The speculum according to claim 15, wherein, The rib structure includes a guide plane parallel to the central axis, and the guide plane is slidably attached to the second guide surface.

17. The speculum according to claim 1, wherein, An elastic part is arranged between the main body part and the locking plate, the elastic part is in a pre-compressed state, and the locking plate has a movement tendency from the second position to the first position by the elastic part.

18. An endoscope system characterized by comprising: The mirror sheath includes any one of claims 1-17. The step structure includes a first guide surface and a second guide surface, both of which are formed in a planar shape, the first guide surface is formed as a side wall of the guide groove, and the second guide surface is formed as a bottom wall of the guide groove. One end of the extension part is connected with the base part, the other end of the extension part is connected with one end of the threaded segment, an outer peripheral surface of the threaded segment is formed with external threads, the fastener is formed with internal threads, the fastener is fixed to the threaded segment by cooperation of the internal threads and the external threads, and part of a surface of the fastener is formed as a side wall of the guide groove. An inner surface of the locking plate is formed with a guide part, the guide part can be guided by the guide structure and can slide relative to the guide structure. The guide part is formed as a rib structure, the rib structure includes a first surface and a second surface in the direction of the central axis, the first surface of the rib structure is used to cooperate with the first guide surface, and the second surface of the rib structure is used to cooperate with the surface of the fastener. The rib structure includes a guide plane parallel to the central axis, and the guide plane is slidably attached to the second guide surface. An elastic part is arranged between the main body part and the locking plate, the elastic part is in a pre-compressed state, and the locking plate has a movement tendency from the second position to the first position by the elastic part. The mirror sheath includes any one of claims 1-17.

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