Endoscope sheath and endoscope system

Abstract

The invention 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] The present invention relates to a scope sheath and an endoscope system, and belongs to the technical field of medical devices. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] During use, a medical endoscope needs to enter the patient's body through the sheath, establish a working channel, and form a stable and reliable positioning and connection at the interface of the sheath.

[0004] The mainstream mirror sheaths on the market currently include two types: rotary locking interface and self-locking interface.

[0005] In the mirror sheath with a rotary locking interface, the locking plate is threadedly connected to the mirror sheath body. The groove at the endoscope interface is aligned with the positioning block of the mirror sheath interface and inserted. The operator turns the lever clockwise to rotate the locking plate, and the locking plate moves axially. At the same time, the two locking surfaces on the outer end face of the locking plate are screwed into the locking groove of the endoscope to tighten the endoscope axially. Then a certain force is applied to the lever to tighten the locking plate, thereby locking the endoscope. When using a mirror sheath with this structure, it is necessary to manually apply a locking force, which is cumbersome to operate and wastes the energy of the surgical operator. In addition, there are many parts, the assembly process is complicated, and the manufacturing cost is high.

[0006] Prior art CN219782490U discloses an endoscope sheath locking structure. That is, the prior art discloses a sheath with a self-locking locking interface. When the sheath is used, the groove at the interface of the endoscope is aligned with the positioning block of the sheath interface and inserted. After the endoscope contacts the inclined surface of the locking plate, the endoscope is pushed with force. The locking plate is subjected to a downward component force and moves downward along the fixed pin. After the endoscope is pushed into place, the locking plate automatically rebounds under the action of the spring, and the locking surface is stuck in the locking groove of the endoscope to achieve automatic locking of the endoscope. The inclined surface of the locking plate of the sheath of this structure is characterized by a traditional conical inclined surface. When inserting the endoscope, the resistance is large. A large force is required to push the endoscope to cause the locking plate to move. During the pushing process, the contact area between the inclined surface and the endoscope is small. Repeated use can easily cause the inclined surface to wear and become concave. In severe cases, the endoscope is stuck and cannot be pushed in, resulting in a short service life of the sheath. In addition, the sheath of this structure has many parts, a complicated assembly process, and a high manufacturing cost.

[0007] In addition, the prior art CN217792955U also discloses a locking mechanism and an endoscope device, wherein the locking mechanism comprises a first connection, a second connection seat, a locking sleeve assembly and a positioning assembly, wherein the outer surface of the first connection seat is provided with a slide groove extending in the circumferential direction. The second connection seat is docked with the first connection seat, and the second connection seat is provided with a first limiting protrusion. The locking sleeve assembly is sleeved outside the first connection seat and the second connection seat, and the locking sleeve assembly is provided with a second limiting protrusion and an avoidance groove. The locking sleeve assembly has a locking position and an unlocking position, and in the locking position, the first limiting protrusion is engaged with the second limiting protrusion, and in the unlocking position, the second limiting protrusion is separated from the first limiting protrusion. One end of the positioning assembly penetrates the inner surface of the locking sleeve assembly and extends into the slide groove, and when the locking sleeve assembly enters the locking position, one end of the positioning assembly slides to one end of the slide groove, and when the locking sleeve assembly enters the unlocking position, one end of the positioning assembly slides to the other end of the slide groove. However, the prior art has many parts and components, the assembly process is complicated, and the operation is complicated when locking or releasing the endoscope. Summary of the invention

[0008] The present disclosure provides a scope sheath and an endoscope system.

[0009] According to one aspect of the present disclosure, there is provided a scope sheath, the scope sheath being used for installing an endoscope, and comprising: A main body, the main body comprising a central axis, capable of being inserted into and fixed in the scope sheath when the endoscope moves along the central axis in a first direction; and capable of being removed from the scope sheath when the endoscope moves along the central axis in a second direction; a fastener, the fastener being fixed to the main body, and the main body and the fastener forming a guide structure; and A locking plate, the locking plate being guided by the guide structure so as to be 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 the endoscope mounted on the sheath; and when the locking plate is in the second position, the endoscope is allowed to be removed from the sheath; Wherein, the locking plate includes a guide portion, wherein the guide portion is used to cooperate with at least a portion of the sliding profile of the endoscope so that when the endoscope moves along 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 the position of the endoscope is limited by the guide portion.

[0010] According to the mirror sheath of at least one embodiment of the present disclosure, the guide portion is formed in two, and the two guide portions are respectively located at both ends of the inner flange portion in the circumferential direction.

[0011] According to the scope sheath of at least one embodiment 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 of the sliding profile of the endoscope can be slidably disposed in the guide groove and guided by the guide groove.

[0012] According to the mirror sheath of at least one embodiment 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 wall surfaces of the guide groove.

[0013] According to the scope sheath of at least one embodiment of the present disclosure, the first guide surface is arranged adjacent to the inner flange portion, wherein the first guide surface is used to contact at least part of the sliding profile of the endoscope so that the sliding profile of the endoscope can apply a thrust to the first guide surface and cause the locking plate to move from the first position to the second position.

[0014] According to the mirror sheath of at least one embodiment of the present disclosure, the first guide surface is arranged at an angle and extends from one end of the locking plate along a first direction; wherein, along the first direction, the first guide surface extends upward at an angle.

[0015] According to the sheath of at least one embodiment 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 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 move the locking plate from the first position to the second position.

[0016] According to the mirror sheath of at least one embodiment of the present disclosure, the second guide surface is arranged obliquely and extends from one end of the locking plate along the first direction, and along the first direction, the second guide surface extends obliquely upward.

[0017] According to the mirror sheath of at least one embodiment of the present disclosure, the third guide surface is arranged to be inclined, and at least a portion of the third guide surface is contracted inwardly along the first direction.

[0018] According to the mirror sheath of at least one embodiment of the present disclosure, the guide structure is formed as a guide groove, and a part of the surface of the fastener is formed as a side wall of the guide groove.

[0019] According to the mirror sheath of at least one embodiment of the present disclosure, the main body includes a base and an extension connected to the base, a step structure is formed on the extension, and the step structure and the fastener form the guide groove.

[0020] According to the mirror sheath of at least one embodiment of the present disclosure, the step structure includes a first guide surface and a second guide surface, the first guide surface and the second guide surface are both formed into a plane 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.

[0021] According to the mirror sheath of at least one embodiment of the present disclosure, one end of the extension portion is connected to the base, and the other end of the extension portion 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, and the fastener is fixed to the threaded segment by the cooperation of the internal thread and the external thread, wherein a portion of the surface of the fastener is formed as a side wall of the guide groove.

[0022] According to the mirror sheath of at least one embodiment of the present disclosure, a guide component is formed on the inner surface of the locking plate, and the guide component can be guided by the guide structure so that the guide component and the guide structure can slide relative to each other.

[0023] According to the mirror sheath of at least one embodiment of the present disclosure, the guide component is formed as a rib structure, and the rib structure includes 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 cooperate with the first guide surface, and the second surface of the rib structure is used to cooperate with the surface of the fastener.

[0024] According to the mirror sheath of at least one embodiment of the present disclosure, the rib structure includes a guide plane parallel to the central axis, and the guide plane is slidably fitted with the second guide surface.

[0025] According to at least one embodiment of the mirror sheath disclosed herein, an elastic component is provided between the main body and the locking plate, and the elastic component is in a pre-compressed state so that the locking plate has a movement tendency from the second position to the first position through the elastic component.

[0026] According to another aspect of the present disclosure, an endoscope system is provided, which includes the above-mentioned scope sheath.

[0027] Beneficial effects: In the scope sheath disclosed in the present invention, by improving the guide part, the sliding resistance of the contact position between the endoscope and the locking plate when the endoscope is pushed in is reduced, and the resistance during the endoscope installation process is small; it also avoids the technical problem of easy wear of the guiding inclined surface in the prior art; when the position of the endoscope is fixed, the endoscope can be fixed by the guide part, and the endoscope can be firmly fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description 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.

[0029] Figure 1 It is a schematic diagram of the structure of an endoscope in the prior art.

[0030] Figure 2 It is a schematic structural diagram of an endoscope system according to one embodiment of the present disclosure.

[0031] Figure 3 is a schematic diagram of the exploded structure of an endoscope system according to one embodiment of the present disclosure.

[0032] Figure 4 It is a schematic cross-sectional structural diagram of an endoscope system according to one embodiment of the present disclosure.

[0033] Figure 5 It is a schematic cross-sectional structural diagram of an endoscope system according to an embodiment of the present disclosure from another angle.

[0034] Figure 6 It is a schematic diagram of the exploded structure of a mirror sheath according to one embodiment of the present disclosure.

[0035] Figure 7 It is a schematic structural diagram of a locking plate according to an embodiment of the present disclosure.

[0036] Figure 8 It is a schematic diagram of the matching structure of an endoscope and a locking plate according to an embodiment of the present disclosure.

[0037] The specific reference numerals in the figure are: 100 Endoscope 110 Fixing plate 111 Part 1 112 Part 2 113 corner 114 Positioning slot 200 Mirror Scabbard 210 Main body 211 base 212 Extension 213 first guide surface 214 second guide surface 215 thread segment 216 Positioning components 220 Fasteners 230 Locking plate 231 Guide components 231A Second guide surface 232 Guidance Department 232A First guide surface 232B Second guide surface 232C Third guide surface 233 Inner flange 240 Elastic components. DETAILED DESCRIPTION

[0038] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0039] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] Unless otherwise specified, the exemplary embodiments / embodiments shown will be understood as providing exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, the features of the various embodiments / embodiments can be combined, separated, interchanged and / or rearranged without departing from the technical concept of the present disclosure.

[0041] The use of cross-hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the described order. In addition, the same figure numbers represent the same components.

[0042] When a component is referred to as being "on" or "over," "connected to," or "coupled to" another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being "directly on," "directly connected to," or "directly coupled to" another component, there are no intervening components. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0043] For descriptive purposes, the present disclosure may use spatially relative terms such as "under," "beneath," "under," "down," "over," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, components described as "under" or "beneath" other components or features would subsequently be positioned "over" the other components or features. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0044] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0045] Figure 1 It is a schematic diagram of the structure of an endoscope in the prior art.

[0046] like Figure 1 As shown, the endoscope 100 in the prior art generally includes a fixing plate 110 , and the fixing plate 110 cooperates with the scope sheath 200 to achieve locking of the endoscope 100 .

[0047] Specifically, the fixing plate 110 of the present disclosure includes a substantially circular first portion 111 and a second portion 112 extending radially outward from the first portion 111, wherein the second portion 112 is provided in two portions, and the two second portions 112 are symmetrically provided. Each second portion 112 includes a corner portion 113. Thus, the outer contour of the fixing plate 110 of the present disclosure is the sliding contour of the endoscope 100.

[0048] Furthermore, a positioning groove 114 is provided on the first portion 111 . The positioning groove 114 penetrates the first portion 111 along the thickness direction of the first portion 111 .

[0049] Since the endoscope 100 is a structure in the prior art, the present disclosure will not further explain it.

[0050] Figure 2 It is a schematic structural diagram of an endoscope system according to one embodiment of the present disclosure. Figure 3 is a schematic diagram of the exploded structure of an endoscope system according to one embodiment of the present disclosure. Figure 4 It is a schematic cross-sectional structural diagram of an endoscope system according to one embodiment of the present disclosure. Figure 5 It is a schematic cross-sectional structural diagram of an endoscope system according to an embodiment of the present disclosure from another angle.

[0051] like Figures 2 to 5 As shown, the endoscope system of the present disclosure includes an endoscope 100 and a sheath 200, wherein the sheath 200 is used to install the endoscope 100. In other words, when the endoscope system of the present disclosure is in use, the endoscope 100 can be inserted into the sheath 200, and at this 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 driven to act, so that the sheath 200 releases the endoscope 100, and then the endoscope 100 can be pulled out of the sheath 200.

[0052] Specifically, the mirror sheath 200 of the present disclosure may include components such as a main body 210 , a fastener 220 , and a locking plate 230 .

[0053] In the present disclosure, the main body 210 includes a central axis. Figures 2 to 5 When the endoscope 100 moves along the central axis in a first direction, it can be inserted into and fixed in the scope sheath 200; when the endoscope 100 moves along the central axis in a second direction, it can be removed from the scope sheath 200; accordingly, Figures 2 to 5In the directions shown, the first direction is the left direction, and the second direction is the right direction. That is to say, the first direction and the second direction of the present disclosure are opposite directions. In addition, the central axis direction of the present disclosure may include the first direction and the second direction.

[0054] The main body 210 of the present disclosure is formed with a central hole, and in this case, the axis of the central hole is the central axis mentioned above. Moreover, at least a portion of the endoscope 100 can pass through the 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 the present disclosure is formed as a tapered hole, and an annular groove is provided on the hole wall of the tapered hole, and an O-ring is provided in the annular groove. When at least part of the endoscope 100 is inserted into the central hole, the tapered part of the endoscope 100 can fit tightly with the hole wall of the tapered hole, and a sealed connection is formed between the main body 210 and the endoscope 100 through the O-ring.

[0055] 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; accordingly, under the guidance of the guide structure, the locking plate 230 can be driven and moved in the vertical direction (with Figure 3 and Figure 4 direction) movement.

[0056] Specifically, the locking plate 230 is guided by the guide structure so as to be able to move between a first position and a second position; wherein, when the locking plate 230 is located at the first position, the locking plate 230 can lock the endoscope 100 mounted on the scope sheath 200; when the locking plate 230 is located at the second position, the endoscope 100 is allowed to be moved out of the scope sheath 200; in other words, the locking plate 230 of the present disclosure can be located at the first position and the second position when moving in the vertical direction. The first position is higher than the second position.

[0057] For example, when the endoscope 100 is mounted on the sheath 200, a leftward force can be applied to the endoscope 100, and at this time, the endoscope 100 can drive the locking plate 230 to move downward, so that the locking plate 230 moves from the first position to the second position. After the endoscope 100 is inserted into the preset position, the locking plate 230 can move upward under the action of the reset force provided by the elastic component 240, and move from the second position to the first position, so that the locking plate 230 locks the endoscope 100 in the preset position. In the opposite working process, when the endoscope 100 is removed from the sheath 200, a downward force can be applied to the locking plate 230, and the locking plate 230 moves downward, so as to move from the first position to the second position. At this time, a rightward force can be applied to the endoscope 100, so that the endoscope 100 is removed from the sheath 200. At the same time, 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 component 240 and stay at the first position.

[0058] Figure 6 It is a schematic diagram of the exploded structure of a mirror sheath according to one embodiment of the present disclosure.

[0059] like Figures 4 to 6 As shown, the guide structure of the present disclosure is formed as a guide groove; moreover, the main body 210 of the present disclosure includes a base 211 and an extension portion 212 connected to the base 211, and the extension portion 212 is formed with a step structure, and the step structure and the fastener 220 together form the guide groove.

[0060] Specifically, if Figure 6 As shown, the step structure includes a first guide surface 213 and a second guide surface 214, both of which are formed in a plane shape, the first guide surface 213 is formed as a side wall of the guide groove, and the second guide surface 214 is formed as a 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 the second guide surface 214 is arranged substantially vertically.

[0061] In the present disclosure, the step structure is provided in two, and the two step structures are symmetrically arranged, so that under the guidance of the guide structure, the locking plate 230 can stably slide in the vertical direction. Accordingly, the locking plate 230 of the mirror sheath 200 of the present disclosure is directly installed and positioned on the main body 210, and its dimensional accuracy is high, and the sliding force is balanced.

[0062] One end of the extension part 212 of the present disclosure is connected to the base part 211, and the other end of the extension part 212 is connected to one end of the threaded section 215. At this time, the outer peripheral surface of the threaded section 215 is formed with an external thread, and the fastener 220 is formed with 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. At this time, part of the surface of the fastener 220 forms the side wall of the guide groove. The fastener 220 can be in pressure contact with the end surface of the other end of the extension part 212, so that the fastener 220 will not be loosened from the main body 210. Accordingly, the mirror sheath 200 of the present disclosure can be installed and disassembled by the fastening action of the fastener 220, and its installation and disassembly process is very convenient.

[0063] Refer to Figure 6 The other end of the thread segment 215 of the present disclosure is formed with a positioning component 216, and the positioning component 216 includes a protrusion extending from the thread segment 215 along the second direction. Therefore, when the endoscope 100 is installed in the scope sheath 200, the positioning component 216 can be inserted into the positioning groove 114 of the endoscope 100, so that the position of the endoscope 100 in the circumferential direction can be limited.

[0064] Figure 7 It is a schematic structural diagram of a locking plate according to an embodiment of the present disclosure. Figure 8 It is a schematic diagram of the matching structure of an endoscope and a locking plate according to an embodiment of the present disclosure.

[0065] like Figures 2 to 8 As shown, the inner surface of the locking plate 230 of the present disclosure is formed with a guide component 231, which can be guided by the guide structure and allows the guide component 231 and the guide structure to slide relative to each other. Accordingly, the locking plate 230 of the present disclosure can only move in the up and down directions.

[0066] Specifically, if Figure 7 As shown, the guide component 231 is formed as a rib structure, which includes a first surface and a second surface in the direction of the central axis (including the first direction and the second direction), wherein 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.

[0067] More specifically, two rib structures are provided, each of which includes a guide plane 231A parallel to the central axis, and the guide plane 231A is slidably fitted to the second guide surface 214 .

[0068] like Figure 4As shown, an elastic component 240 is disposed between the main body 210 and the locking plate 230 of the present disclosure, and the elastic component 240 is in a pre-compressed state so that the locking plate 230 has a movement tendency from the second position to the first position through the elastic component 240 .

[0069] Refer to Figure 7 The locking plate 230 of the present disclosure includes a guide portion 232 and an inner flange portion 233; wherein the guide portion 232 is used to cooperate with at least a portion of the sliding profile of the endoscope 100, so that when the endoscope 100 moves along the first direction, the endoscope 100 can drive the locking plate 230 from the first position to the second position; after the endoscope 100 is inserted into the scope sheath 200, the locking plate 230 moves from the second position to the first position, and the position of the endoscope 100 is limited by the guide portion 232. In a preferred embodiment, the inner flange portion 233 of the present 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. At the position 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. That is, after the endoscope 100 of the present disclosure is installed in the scope sheath, only the corner 113 of the fixing plate 110 of the endoscope is fixed, so that the endoscope of the present disclosure can be disassembled with only a small force.

[0070] That is to say, unlike the prior art, when the sheath of the present invention is in use, during the process of inserting the endoscope 100 into the sheath 200, the endoscope 100 only drives the locking plate 230 by driving the guide portion 232, thereby reducing the sliding resistance of the contact position between the endoscope 100 and the locking plate when the endoscope 100 is pushed in, and the installation process of the endoscope 100 has low resistance; it also avoids the technical problem of easy wear of the guiding slope in the prior art; when the position of the endoscope 100 is fixed, the endoscope 100 can be fixed by the guide portion 232, or the endoscope 100 can be fixed by the guide portion 232 and the inner flange portion 233, so that the endoscope 100 can be firmly fixed.

[0071] In a preferred embodiment, the guide portion 232 is formed in two, and the two guide portions 232 are respectively located at the two ends of the inner flange portion 233 in the circumferential direction, so that at least two parts (i.e., the two second parts) of the sliding profile of the endoscope 100 can push the locking plate 230 to produce vertical movement.

[0072] In the present 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 called 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.

[0073] like Figure 6 and Figure 7 As shown, the guide portion 232 of the present 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 the present disclosure, the first guide surface 232A, the second guide surface 232B and the third guide surface 232C are formed as a continuous curved surface.

[0074] Specifically, the first guide surface 232A is arranged adjacent to the inner flange portion 233, and the first guide surface 232A extends from one end of the locking plate 230 along a first direction, and along the first direction, the first guide surface 232A extends upwardly inclined, thereby, when the first guide surface 232A contacts at least part 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 and cause the locking plate 230 to move from the first position to the second position.

[0075] In addition, the second guide surface 232B of the present disclosure is located between the first guide surface 232A and the third guide surface 232C, and the second guide surface 232B extends from one end of the locking plate 230 along the first direction, and the second guide surface 232B extends upward along the first direction, so that 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 thrust to the second guide surface 232B and move the locking plate 230 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 positioning of the endoscope more accurate, that is, the guide portion 232 of the present disclosure can limit the circumferential direction of the endoscope 100 to prevent the endoscope from rotating during the insertion of the endoscope sheath.

[0076] In addition, the third guide surface 232C of the present invention is also arranged at an inclination. For example, along the first direction, at least a portion of the third guide surface 232C is retracted inwardly. That is, in this direction, the third guide surface 232C is inclined toward the axial direction close to the locking plate 230. Thus, the corner 113 of the fixing plate 110 can be pre-positioned by the third guide surface 232C. That is, when the corner 113 contacts the third guide surface 232C, the third guide surface 232C can limit the rotation of the endoscope.

[0077] In the scope sheath disclosed in the present invention, the main body 210 and the locking plate 230 are both processed in one piece, and the manufacturing process is simple, saving manufacturing time and cost. The guide portion 232 of the locking plate 230 is formed with a contoured guide groove through the inclined surface feature, which reduces the resistance when inserting the endoscope 100, and the scope sheath disclosed in the present invention can automatically lock the endoscope, saving the energy of the surgical operator, and solving the problem that the endoscope locking interface in the prior art needs to apply the locking force manually, the operation is cumbersome, or a large force is required to install the endoscope, which is inconvenient to operate, and there are many parts, a complex assembly process, and a high manufacturing cost.

[0078] Moreover, through the design of the contoured guide groove, the contact area between the locking plate 230 and the endoscope 100 is increased, and the first guide surface 232A, the second guide surface 232B and the third guide surface 232C forming the guide groove are not easy to get stuck in the endoscope and cause wear and depression, and the repeated service life is longer.

[0079] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0080] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0081] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A scope sheath, the scope sheath is used to install an endoscope, characterized in that: include: A main body, the main body comprising a central axis, and when the endoscope moves along the central axis in a first direction, the main body can be inserted into and fixed in the scope sheath; When the endoscope moves along the central axis in a second direction, it can be removed from the endoscope sheath; A fastener, the fastener is fixed to the main body, and the main body and the fastener form a guide structure; as well as A locking plate, the locking plate being guided by the guide structure so as to be 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 the endoscope mounted on the sheath; and when the locking plate is in the second position, the endoscope is allowed to be removed from the sheath; Wherein, the locking plate includes a guide portion, wherein the guide portion is used to cooperate with at least a portion of the sliding profile of the endoscope so that when the endoscope moves along 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 the position of the endoscope is limited by the guide portion.

2. The mirror sheath according to claim 1, characterized in that: The locking plate further includes an inner flange portion, and the guide portion is formed in two portions, and the two guide portions are respectively located at two ends of the inner flange portion in a circumferential direction.

3. The mirror sheath according to claim 2, characterized in that: The guide portion is formed as a guide groove in which a corner portion of the sliding profile of the endoscope can be slidably disposed and guided.

4. The mirror sheath according to claim 3, characterized in that: 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 wall surfaces of a guide groove.

5. The mirror sheath according to claim 4, characterized in that: The first guide surface is arranged adjacent to the inner flange portion, wherein the first guide surface is used to contact at least part of the sliding profile of the endoscope so that the sliding profile of the endoscope can apply a thrust to the first guide surface and move the locking plate from the first position to the second position.

6. The mirror sheath according to claim 4, characterized in that: The first guide surface is arranged obliquely and extends from one end of the locking plate along a first direction; wherein, along the first direction, the first guide surface extends obliquely upward.

7. The mirror sheath according to claim 4, characterized in that: The second guide surface is located between the first guide surface and the third guide surface. When the endoscope is inserted into the 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 move the locking plate from the first position to the second position.

8. The mirror sheath according to claim 4, characterized in that: The second guide surface is arranged at an inclination and extends from one end of the locking plate along the first direction, and along the first direction, the second guide surface extends upward at an inclination.

9. The mirror sheath according to any one of claims 1 to 8, characterized in that: The third guide surface is arranged obliquely, and at least a portion of the third guide surface shrinks inwardly along the first direction; Optionally, the guide structure is formed as a guide groove, and a portion of the surface of the fastener is formed as a side wall of the guide groove; Optionally, the main body includes a base and an extension connected to the base, a step structure is formed on the extension, and the step structure and the fastener form the guide groove; Optionally, the step structure includes a first guide surface and a second guide surface, the first guide surface and the second guide surface are both formed in a plane 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; Optionally, 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, the fastener is formed with an internal thread, and the fastener is fixed to the threaded segment by the cooperation of the internal thread and the external thread, wherein part of the surface of the fastener is formed as a side wall of the guide groove; Optionally, a guide component is formed on the inner surface of the locking plate, and the guide component can be guided by the guide structure, so that the guide component and the guide structure can slide relative to each other; Optionally, the guide component is formed as a rib structure, the rib structure includes 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 cooperate with the first guide surface, and the second surface of the rib structure is used to cooperate with the surface of the fastener; Optionally, the rib structure includes a guide plane parallel to the central axis, and the guide plane is slidably fitted with the second guide surface; Optionally, an elastic component is provided between the main body and the locking plate, and the elastic component is in a pre-compressed state, so that the locking plate has a movement tendency from the second position to the first position through the elastic component.

10. An endoscope system, characterized in that: The mirror sheath comprises the mirror sheath as described in any one of claims 1-9.

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