Sheath tip, sheath assembly, advancing device and endoscope system
By designing the head end piece for the sheath, the problems of easy damage to the sheath and easy detachment of the connection during transportation and handling of the propulsion device were solved, thus achieving the stability of the sheath and simplifying operation, and reducing the difficulty of disinfection.
Patent Information
- Application Number
- CN202421467846.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2034-06-26
AI Technical Summary
During the transportation and handling of the propulsion device before use, there are problems such as the sheath tube being easily damaged and the connection between the sheath tube and the fluid channel being easily detached.
A head end piece for a sheath is designed, including a first fixing part and a second fixing part. The first fixing part is sealed to the distal end of the sheath body, and the second fixing part is adapted to the inner cavity of the anal plug of the propulsion device, thereby improving the stability of the sheath body and preventing shaking and falling off.
During transportation and handling, the stability of the sheath is improved, reducing the risk of sheath damage and detachment at the connection, simplifying the operation steps and reducing the difficulty of disinfection.
Smart Images
Figure CN224671475U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a sheath tip, sheath assembly, propulsion device and endoscope system. Background Technology
[0002] An endoscope is a commonly used medical device that can directly enter the body's natural cavities for examination, enabling visualization of the internal organs, exploration of lesions, and treatment. A colonoscope is a type of endoscope that can be inserted through the anus into the colon and reach the cecum.
[0003] The human body consists of the rectum, sigmoid colon, descending colon, splenic flexure, transverse colon, hepatic flexure, and ascending colon, extending from the anus to the cecum. Significant bends exist between adjacent sections of the colon. To reduce the difficulty of colonoscope insertion, a propulsion device with a fluid channel formed by a flexible membrane has been provided in related technologies. By inflating the fluid channel, the flexible membrane can be extended, propelling the insertion section forward.
[0004] In related technologies, to enable the reuse of endoscopes and reduce the difficulty of sterilizing them, the propulsion device also includes a sheath. The distal end of the sheath is connected to the distal end of the fluid channel, and the endoscope insertion part is inserted into the sheath, thereby avoiding direct contact between the insertion part and the human body. However, the inventors have discovered that during the transportation and handling of the propulsion device before use, there are problems such as the sheath being easily damaged and the connection between the sheath and the fluid channel being easily detached. Utility Model Content
[0005] This utility model discloses a sheath end piece, a sheath assembly, a propulsion device, and an endoscope system to solve the technical problems in related technologies, such as easy damage to the sheath and easy detachment of the connection between the sheath and the fluid channel during transportation and handling before use.
[0006] To solve the above problems, the present invention adopts the following technical solution: The first aspect of this utility model provides a head end piece for a sheath.
[0007] The present invention provides a sheath end piece, comprising a first fixing part and a second fixing part, wherein the second fixing part is located at the distal end of the first fixing part, and the first fixing part is used for sealing connection with the distal end of the sheath body of the propulsion device. The circumferential dimension of the first fixing part is smaller than the circumferential dimension of the second fixing part, and when the first fixing part is sealed to the distal end of the sheath body, the circumferential dimension of the second fixing part is adapted to the inner cavity of the anal plug of the propulsion device.
[0008] A second aspect of this invention provides a sheath assembly.
[0009] The sheath assembly of this utility model includes a head end piece and a sheath body, wherein the head end piece is the sheath head end piece described in any of the technical solutions of this utility model, and the head end piece is disposed at the distal end of the sheath body.
[0010] The third aspect of this utility model provides a propulsion device.
[0011] The propulsion device of this utility model includes a sheath assembly and a fluid drive unit, wherein the sheath assembly is the sheath assembly described in any of the technical solutions of this utility model, and the distal end of the sheath assembly is fixedly connected to the distal end of the fluid drive unit.
[0012] The fourth aspect of this utility model provides an endoscope system.
[0013] The endoscope system of this utility model includes a propulsion device and an endoscope body. The endoscope body includes an insertion part and a handle connected to each other. The propulsion device is the propulsion device described in any of the technical solutions of this utility model. The propulsion device is used to push the insertion part into the cavity.
[0014] The technical solution adopted in this utility model can achieve the following beneficial effects: The sheath end piece of this utility model includes a first fixing part and a second fixing part. During transportation and handling before the use of the propulsion device, the first fixing part is sealed to the distal end of the sheath body, and the second fixing part is adapted to the inner cavity of the anal plug of the propulsion device. This can improve the stability of the sheath body and avoid the problem of the sheath body shaking due to the gap between the sheath body and the anal plug. This can reduce the risk of damage to the sheath body and the risk of the sheath body falling off at the connection between the sheath body and the fluid channel.
[0015] The sheath end piece of this utility model solves the problems in related technologies, such as easy damage to the sheath and easy detachment of the connection between the sheath and the fluid channel during the transportation and handling of the propulsion device before use. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the insertion part and the propulsion device cooperating in an embodiment of this application; Figure 2 This is a partial schematic diagram of the insertion part and the propulsion device in an embodiment of this application; Figure 3 This is an exploded view of the propulsion device according to an embodiment of this application; Figure 4 This is a schematic diagram of the cooperation between the sheath body and the fluid drive unit in an embodiment of this application; Figure 5 This is a first schematic diagram of the head end piece for the sheath according to an embodiment of this application; Figure 6 This is a second schematic diagram of the head end piece for the sheath according to an embodiment of this application; Figure 7 This is a schematic diagram of the head end piece for the sheath according to the second embodiment of this application; Figure 8 This is a schematic diagram of the head end piece for the sheath according to the third embodiment of this application; Figure 9 This is a schematic diagram of the sheath body according to an embodiment of this application.
[0018] In the figure: 10, propulsion device; 110, head end piece; 111, first fixing part; 112, second fixing part; 1121, contact point; 113, transition part; 114, receiving cavity; 115, guide part; 116, first protrusion; 117, through hole; 120, sheath body; 121, first channel; 122, second channel; 130, anal plug; 140, outer shell; 200, fluid drive part; 21, insertion part; 211, camera module. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0021] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".
[0022] In related technologies, the propulsion device has an anal plug at its distal end. During use, the anal plug is inserted into the anus to prevent the sphincter muscles from contracting and compressing the flexible membrane. Typically, the diameter of the sheath is smaller than the diameter of the anal plug. This not only avoids the problem of the sheath being too large to enter the colon, but also ensures that the sheath can slide along the axis of the anal plug and enter the colon. However, the inventors discovered that during transportation and handling of the propulsion device before use, there is significant vibration, shaking, or swaying. Because the diameter of the sheath is smaller than the diameter of the anal plug, a large gap exists between the anal plug and the sheath, causing the sheath to easily sway. This can lead to collisions and damage between the sheath and the anal plug, and may also cause the connection between the sheath and the fluid channel to detach.
[0023] Therefore, this application provides a sheath head end piece, which includes a first fixing part and a second fixing part. During transportation and handling before the use of the propulsion device, the first fixing part is connected to the distal end of the sheath body, and the second fixing part contacts the anal plug of the propulsion device in the circumferential direction, which can improve the stability of the sheath body and avoid the problem of the sheath body shaking due to the gap between the sheath body and the anal plug.
[0024] The following is in conjunction with the appendix Figures 1 to 9 The present application provides a detailed description of the sheath headpiece, sheath assembly, propulsion device, and endoscope system provided in the embodiments of this application through specific implementation methods and application scenarios.
[0025] The first aspect of this embodiment describes in detail the head end piece for the sheath of this application.
[0026] The sheath end piece of this embodiment is used in the propulsion device 10, such as... Figures 1-3 As shown. The propulsion device 10 includes a sheath assembly and a fluid drive unit 200. The sheath assembly is used to insert the insertion part 21 of the endoscope body. The distal end of the fluid drive unit 200 is fixedly connected to the distal end of the sheath assembly.
[0027] Preferably, the fluid drive unit 200 includes multiple fluid channels formed of a flexible material. The multiple fluid channels are sealed structures and are used to allow fluid to flow into them. In the initial state, the fluid drive unit 200 is in a stacked state. After fluid is introduced into the fluid channels, the fluid drive unit 200 extends, thereby driving the sheath assembly into the cavity through the extension of the fluid drive unit 200, which in turn allows the insertion unit 21 to enter the cavity.
[0028] Figure 3 and Figure 4 A schematic diagram of the extended fluid drive unit 200 is shown. The length of the extended fluid drive unit 200 is not limited to that shown in the figure. For example, the extended length of the fluid drive unit 200 is not less than the length of the insertion part 21.
[0029] Preferably, the propulsion device 10 further includes an anal plug 130 and a housing 140, such as Figure 3 As shown. The outer casing 140 is fitted over the fluid drive unit 200, and the fluid drive unit 200 is constrained by the outer casing 140. The anal plug 130 has an inner cavity and is located at the distal end of the outer casing 140; the sheath assembly can slide axially along the anal plug 130. By providing the anal plug 130, the contraction of the anal sphincter can prevent compression of the fluid drive unit 200 caused by the contraction of the anal sphincter.
[0030] The sheath end piece of this embodiment includes a first fixing part 111 and a second fixing part 112, such as... Figure 5 , Figure 7 and Figure 8 As shown. For example, the first fixing part 111 and the second fixing part 112 can be two parts of the same structure. In this case, the first fixing part 111 and the second fixing part 112 can be an integral structure, and the first fixing part 111 and the second fixing part 112 can be integrally formed, such as... Figure 5 and Figure 6 As shown. For example, the first fixing part 111 and the second fixing part 112 can also be two separate structures, in which case the first fixing part 111 and the second fixing part 112 are connected to each other, as shown. Figure 7 and Figure 8 As shown.
[0031] Preferably, the second fixing part 112 is located at the distal end of the first fixing part 111, such as... Figure 5 , Figure 7 and Figure 8 As shown. The first fixing part 111 is used for a sealed connection with the distal end of the sheath body 120 of the propulsion device 10. The circumferential dimension of the first fixing part 111 is smaller than the circumferential dimension of the second fixing part 112, so that the circumferential dimension of the first fixing part 111 can be adapted to the diameter of the sheath body 120. The first fixing part 111 is sealed with the distal end of the sheath body 120. When the insertion part 21 of the endoscope is inserted into the first channel 121 of the sheath body 120, the insertion part 21 can be prevented from being contaminated by body fluids in the cavity, which helps to reduce the difficulty of disinfecting the insertion part 21.
[0032] More preferably, when the first fixing part 111 is sealed to the distal end of the sheath body 120, the second fixing part 112 is adapted to the inner cavity of the anal plug 130 of the propulsion device 10. The adaptation of the second fixing part 112 to the inner cavity of the anal plug 130 can also be described as the second fixing part 112 having the same circumferential dimension as the inner cavity of the anal plug 130; or as the second fixing part 112 contacting the inner cavity of the anal plug 130 in the circumferential direction, such as... Figure 1 As shown.
[0033] For example, when the head end piece is a spherical or columnar structure, the circumferential dimension of the first fixing part 111 is the diameter of the first fixing part 111, and similarly, the circumferential dimension of the second fixing part 112 is the diameter of the second fixing part 112. The diameter of the first fixing part 111 and the diameter of the second fixing part 112 are the outer diameters.
[0034] In this embodiment, the sheath head end piece is sealed to the distal end of the sheath body 120 by the first fixing part 111 during transportation and handling before the use of the propulsion device 10, and the second fixing part 112 is adapted to the inner cavity of the anal plug 130 of the propulsion device 10. This can improve the stability of the sheath body 120 and avoid the problem of the sheath body 120 shaking due to the gap between the sheath body 120 and the anal plug 130. This can reduce the risk of damage to the sheath body 120 and the risk of the sheath body 120 falling off at the connection with the fluid channel.
[0035] That is, the sheath head end piece of this embodiment solves the problems of easy damage to the sheath and easy detachment of the connection between the sheath and the fluid channel during the transportation and handling of the propulsion device 10 before use in the related technology.
[0036] For example, the first fixing part 111 is detachably connected to the distal end of the sheath body 120. Before using the propulsion device, the first fixing part 111 is connected to the distal end of the sheath body 120, thereby improving the stability of the sheath body 120 through the sheath head end piece. When the propulsion device is needed, the sheath head end piece can be removed from the sheath body 120. For example, the first fixing part 111 and the distal end of the sheath body 120 are detachably connected through structures such as buckles and slots.
[0037] For example, the first fixing part 111 is fixedly connected to the distal end of the sheath body 120, and the sheath head end piece cannot be removed from the sheath body 120. Before the propulsion device is used, the stability of the sheath body 120 can be improved by the sheath head end piece. The sheath head end piece is made of transparent material, so that it will not affect the endoscope during the use of the propulsion device. For example, the first fixing part 111 is fixedly connected to the distal end of the sheath body 120 by welding, bonding, or other methods.
[0038] For example, the second fixing part 112 is provided with a plurality of contact points 1121, and the plurality of contact points 1121 are distributed along the circumferential direction of the second fixing part 112, such as Figure 8 As shown. When the first fixing part 111 is connected to the distal end of the sheath body 120, the contact point 1121 contacts the inner wall of the anal plug 130. At this time, the circumferential dimension of the second fixing part 112 refers to the maximum circumferential dimension of the second fixing part 112, which is the circumferential dimension formed by the multiple contact points 1121.
[0039] For example, the second fixing part 112 does not have a contact point 1121, such as Figures 5-7 As shown. When the first fixing part 111 is connected to the distal end of the sheath body 120, the circumferential surface of the second fixing part 112 contacts the interior of the anal plug 130.
[0040] The second fixing part 112 contacts the anal plug 130 of the propulsion device 10 in the circumferential direction. That is, the circumferential dimension of the second fixing part 112 is the same as the inner diameter of the anal plug 130. This ensures that when the first fixing part 111 is connected to the distal end of the sheath body 120, the circumferential surface of the second fixing part 112 is in contact with the inside of the anal plug 130. This not only helps to improve the stability of the sheath body 120, but also reduces the resistance encountered when the fluid drive part 200 drives the sheath body 120 forward.
[0041] According to an optional embodiment, the circumferential dimension of the sheath end piece gradually increases from the first fixing portion 111 to the second fixing portion 112, and a transition portion 113 is formed between the first fixing portion 111 and the second fixing portion 112, such as... Figure 5 For example, the head end of the sheath may be a spherical or conical structure. Figure 5 and Figure 6 A schematic diagram of a spherical structure is shown for the head end of the sheath.
[0042] According to another optional embodiment, both the first fixing part 111 and the second fixing part 112 are columnar structures, and the first fixing part 111 and the second fixing part 112 are formed into a stepped structure, such as... Figure 7 and Figure 8 As shown.
[0043] In this embodiment, the preferred technical solution for the sheath end piece can satisfy the requirement that the circumferential dimension of the first fixing part 111 is adapted to the diameter of the sheath body 120, and the circumferential dimension of the second fixing part 112 is adapted to the inner diameter of the anal plug 130, so that when the first fixing part 111 is connected to the distal end of the sheath body 120, the second fixing part 112 is in contact with the interior of the anal plug 130.
[0044] According to one optional embodiment, the sheath headpiece is a cover structure. Exemplarily, the cover structure is made of a transparent material. For example, the entire sheath headpiece is transparent, or a portion of the sheath headpiece is transparent. Exemplarily, the transparent material is a plastic material such as polymethyl methacrylate or polycarbonate. With a transparent cover structure, the sheath headpiece does not need to be removed from the sheath body 120 during use of the propulsion device, simplifying the operation.
[0045] Preferably, the sheath end piece has a receiving cavity 114, the distal end of the sheath body 120 is located within the receiving cavity 114, and the first fixing part 111 is fixedly connected to the distal end of the sheath body 120, such as... Figure 5 As shown. That is, the sheath head end piece is sleeved on the far end of the sheath body 120. This method can not only increase the contact area between the sheath head end piece and the far end of the sheath body 120, and enhance the stability of the connection between the two, but also avoid the increase of the axial dimension of the sheath assembly.
[0046] Preferably, the first fixing part 111 is sealed to the distal end of the sheath body 120, which can prevent the body fluid from entering the insertion part 21 through the gap at the connection between the first fixing part 111 and the sheath body 120, thus avoiding the problem of increased difficulty in disinfecting the insertion part 21.
[0047] According to one alternative embodiment, the sheath end piece has a spherical structure, such as... Figure 5 and Figure 6 As shown. Preferably, the first fixing part 111 is located near the second fixing part 112, and the portion of the sheath end piece located far from the second fixing part 112 is formed as a guide part 115. The diameter of the guide part 115 is smaller than the diameter of the second fixing part 112, such as... Figure 5 As shown. The guide part 115, the first fixing part 111, and the second fixing part 112 are integral structures. For example, the head end piece for the sheath is a spherical structure that is small at both ends and large in the middle. The smaller portions at both ends of the spherical structure are respectively formed as the first fixing part 111 and the guide part 115, and the larger portion in the middle of the spherical structure is formed as the second fixing part 112.
[0048] Figure 5 The dotted lines in the figure divide the integrated spherical structure into a first fixing part 111, a transition part 113, a second fixing part 112, and a guide part 115. It can be seen that the boundary lines between the first fixing part 111 and the transition part 113, the boundary lines between the transition part 113 and the second fixing part 112, and the boundaries between the second fixing part 112 and the guide part 115 are not limited to the positions shown by the dotted lines in the figure.
[0049] In this preferred embodiment, the sheath head end is a spherical structure. During the transportation and handling process before the use of the propulsion device 10, it can not only improve the stability of the sheath body 120, but also make it easier to insert into the anus compared to the columnar structure of the sheath body 120 during the use of the propulsion device 10.
[0050] On the other hand, the inventors found in their research that when the sheath body 120 advances in the body, especially when the distal end of the sheath body 120 advances to the bending area in the colon, due to the small size of the sheath body 120, the distal end face of the sheath body 120 is prone to puncturing the inner wall of the human cavity. This not only easily causes damage to the inner wall of the cavity, but may even lead to the risk of intestinal perforation. Moreover, it is not conducive to the turning of the sheath body 120 in the cavity, which limits the distance the sheath body 120 advances in the body, making it difficult for the sheath body 120 to reach the cecum.
[0051] The preferred embodiment of this technical solution uses a sheath tip, which is disposed at the distal end of the sheath body 120. The sheath tip has a spherical structure. When the sheath body 120 advances in the body, especially when the distal end of the sheath body 120 advances to the bending area in the colon, the sheath tip is larger than the sheath body 120 and the distal end of the sheath tip is smooth, making it less likely for the sheath tip to puncture the inner wall of the body cavity, reducing the risk of damage to the inner wall of the cavity. At the same time, it also facilitates the turning of the sheath body 120 in the cavity, ensuring the reliability of the sheath body 120's advance in the body.
[0052] According to an optional embodiment, the outer surface of the sheath head end piece is further provided with a hydrophobic layer. The hydrophobic layer is made of a hydrophobic material, such as a fluorinated polymer, a siloxane material, a silane material, a polytetrafluoroethylene material, or a polyethylene material. Exemplarily, the hydrophobic layer on the outer surface of the sheath head end piece can be formed by coating with a hydrophobic material coating, or the prepared hydrophobic layer can be directly adhered to the outer surface of the sheath head end piece.
[0053] The preferred embodiment of the sheath head end piece has a hydrophobic layer on its outer surface. The hydrophobic layer can prevent body fluid from adhering to the outer surface of the sheath head end piece, thus preventing the camera module 211 of the insertion part 21 from having a limited shooting range.
[0054] like Figure 2 and Figure 9 As shown, the sheath body 120 has a first channel 121, which extends along the axial direction of the sheath body 120. The first channel 121 is used to insert the insertion part 21 of the endoscope body. Inserting the insertion part 21 into the first channel 121 can avoid direct contact between the insertion part 21 and the human body, thereby facilitating the reuse of the insertion part 21 and reducing the difficulty of disinfecting the insertion part 21.
[0055] According to an optional embodiment, a first protrusion 116 is further formed on the distal end face of the sheath headpiece. When the distal end of the sheath body 120 is located within the receiving cavity 114, the first protrusion 116 is used to receive the camera module 211 of the insertion portion 21. Preferably, the lens of the camera module 211 is a wide-angle lens or a fisheye lens. The shape and size of the first protrusion 116 match those of the wide-angle lens or fisheye lens. The wide-angle lens or fisheye lens protrudes from the distal end face of the insertion portion 21.
[0056] In this preferred embodiment, the sheath end piece further includes a first protrusion 116 formed on its distal end face, such as... Figures 5-8 As shown. The first protrusion 116 can accommodate the wide-angle lens or fisheye lens of the insertion part 21. Compared with a planar lens, when observing the cavity using a wide-angle lens or fisheye lens, the insertion part 21 can still obtain a larger observation range with a smaller bending angle.
[0057] As can be seen, the preferred embodiment of the sheath end piece has a first protrusion 116 formed on its distal end face, which can reduce the bending angle of the insertion part 21 in the cavity.
[0058] According to an optional embodiment, the distal end face of the sheath headpiece is further formed with at least one through hole 117. When the distal end of the sheath body 120 is located within the receiving cavity 114, the through hole 117 communicates with the second channel 122 on the sheath body 120, such as... Figure 6 As shown.
[0059] For example, the sheath body 120 has three second channels 122, which are respectively used to realize the functions of instrument insertion, injection of water or air into the body, and suction of accumulated fluid in the body, such as... Figure 9 As shown. Correspondingly, the distal end face of the sheath headpiece has three through holes 117. When the distal end of the sheath body 120 is located within the receiving cavity 114, the three through holes 117 communicate with three second channels 122 on the sheath body 120, as shown. Figure 6 As shown.
[0060] The preferred embodiment of the sheath head end piece has a through hole 117 formed on its distal end face. The through hole 117 is connected to the second channel 122 on the sheath body 120, which can realize functions such as instrument insertion, injection of water or air into the body, and suctioning out accumulated fluid in the body. This simplifies the structure of the insertion part 21, facilitates the reuse of the insertion part 21, and reduces the difficulty of disinfecting the insertion part 21.
[0061] The second aspect of this embodiment provides a detailed description of the sheath assembly of this application.
[0062] The sheath assembly of this embodiment includes a head end piece 110 and a sheath body 120. The head end piece 110 is a sheath head end piece according to any technical solution in this embodiment, and is disposed at the distal end of the sheath body 120, such as... Figure 1 As shown. Specifically, the first fixing part 111 of the head end piece 110 is connected to the distal end of the sheath body 120.
[0063] Preferably, the sheath body 120 has a first channel 121, which extends along the axial direction of the sheath body 120. The first channel 121 is used to insert the insertion part 21 of the endoscope body, such as... Figure 9 As shown.
[0064] Preferably, the sheath body 120 also has a second channel 122, such as Figure 9 As shown. The second channel 122 is used for instrument insertion, injecting water or air into the body, and aspirating fluid from the body. For example, there are three second channels 122, which are used to perform the functions of instrument insertion, injecting water or air into the body, and aspirating fluid from the body, respectively.
[0065] The sheath body 120 has a first channel 121 and a second channel 122, which simplifies the structure of the insertion part 21, facilitates the reuse of the insertion part 21, and reduces the difficulty of disinfecting the insertion part 21. For example, the sheath body 120 has a first channel 121 and a second channel 122, so that the insertion part 21 only needs to integrate imaging and bending functions. Functions such as instrument insertion, injection of water or air into the body, and suctioning out accumulated fluid in the body can be achieved through the second channel 122, thereby preventing the insertion part 21 from directly contacting the human body and avoiding contamination of the insertion part 21.
[0066] The sheath assembly of this embodiment has a sheath head end piece according to any of the technical solutions in this embodiment. During transportation and handling before the use of the propulsion device, it can improve the stability of the sheath body and reduce the risk of damage to the sheath body and detachment from the connection between the sheath body and the fluid channel.
[0067] The third aspect of this embodiment provides a detailed description of the propulsion device of this application.
[0068] The propulsion device of this embodiment includes a sheath assembly and a fluid drive unit 200, such as... Figures 1-4 As shown. The sheath assembly is the sheath assembly of any technical solution in this embodiment, and the distal end of the sheath assembly is fixedly connected to the distal end of the fluid drive unit 200. The structure of the fluid drive unit 200 has been described in the foregoing embodiments and will not be repeated here.
[0069] The propulsion device of this embodiment has a sheath assembly of any of the technical solutions in this embodiment, which can reduce the risk of damage to the propulsion device during transportation and handling before use.
[0070] The fourth aspect of this embodiment provides a detailed description of the endoscope system of this application.
[0071] The endoscope system of this embodiment includes a propulsion device 10 and an endoscope body. The endoscope body includes an insertion portion 21 and a handle connected to each other. The propulsion device 10 is a propulsion device according to any of the technical solutions in this embodiment, and the propulsion device 10 is used to push the insertion portion 21 into the cavity. Figure 1 and Figure 2 A schematic diagram showing the insertion part 21 cooperating with the propulsion device 10 is shown. Figure 1 and Figure 2 The handle is not shown.
[0072] The endoscope system of this embodiment has a propulsion device according to any of the technical solutions in this embodiment. The propulsion device can assist the insertion part 21 of the endoscope body to enter the human cavity, reduce the difficulty of inserting the insertion part 21, and also reduce the risk of damage to the propulsion device of the endoscope system during transportation and handling before use.
[0073] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0074] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A head end fitting for a sheath, characterized in that, It includes a first fixing part (111) and a second fixing part (112), the second fixing part (112) being located at the distal end of the first fixing part (111), the first fixing part (111) being used for sealing connection with the distal end of the sheath body (120) of the propulsion device (10), the circumferential dimension of the first fixing part (111) being smaller than the circumferential dimension of the second fixing part (112), and when the first fixing part (111) is sealed to the distal end of the sheath body (120), the circumferential dimension of the second fixing part (112) being adapted to the inner cavity of the anal plug (130) of the propulsion device (10).
2. The sheath end fitting according to claim 1, characterized in that, From the first fixing part (111) to the second fixing part (112), the circumferential dimension of the sheath head end piece gradually increases, and a transition part (113) is formed between the first fixing part (111) and the second fixing part (112). Alternatively, both the first fixing part (111) and the second fixing part (112) are columnar structures, and the first fixing part (111) and the second fixing part (112) are formed into a stepped structure.
3. The sheath end fitting according to claim 2, characterized in that, The sheath end piece is a cover structure, and the sheath end piece forms a receiving cavity (114). The distal end of the sheath body (120) is located in the receiving cavity (114), and the first fixing part (111) is fixedly connected to the distal end of the sheath body (120).
4. The sheath end fitting according to claim 3, characterized in that, The sheath headpiece has a spherical structure. The first fixing part (111) is located near the second fixing part (112). The portion of the sheath headpiece located at the far end of the second fixing part (112) is formed as a guide part (115). The diameter of the guide part (115) is smaller than the diameter of the second fixing part (112).
5. The sheath end fitting according to claim 3, characterized in that, The outer surface of the sheath end piece is also provided with a hydrophobic layer.
6. The sheath end fitting according to any one of claims 3 to 5, characterized in that, The distal end face of the sheath headpiece is further provided with a first protrusion (116). When the distal end of the sheath body (120) is located in the receiving cavity (114), the first protrusion (116) is used to receive the camera module (211) of the insertion part (21), wherein the insertion part (21) is inserted into the first channel (121) of the sheath body (120).
7. The sheath end fitting according to claim 6, characterized in that, The distal end face of the sheath headpiece is also formed with at least one through hole (117). When the distal end of the sheath body (120) is located in the receiving cavity (114), the through hole (117) communicates with the second channel (122) on the sheath body (120).
8. A sheath assembly, characterized in that, It includes a head end piece (110) and a sheath body (120), wherein the head end piece (110) is a sheath head end piece according to any one of claims 1 to 7, and the head end piece (110) is disposed at the distal end of the sheath body (120).
9. A propulsion device, characterized in that, It includes a sheath assembly and a fluid drive unit (200), wherein the sheath assembly is the sheath assembly of claim 8, and the distal end of the sheath assembly is fixedly connected to the distal end of the fluid drive unit (200).
10. An endoscope system, characterized in that, It includes a propulsion device (10) and an endoscope body, wherein the endoscope body includes an insertion part (21) and a handle connected to each other, and the propulsion device (10) is the propulsion device according to claim 9, the propulsion device (10) being used to push the insertion part (21) into the cavity.