Insertion structure and endoscope

Abstract

The present application relates to a kind of insertion structure and endoscope.The insertion structure includes: insertion tube, including spring tube, braided mesh and skin layer, the braided mesh is sleeved on the outside of the spring tube, the skin layer is sleeved on the outside of the braided mesh, and the spring tube is fixed at the braided mesh in the distal end;And adjusting mechanism, set in the proximal end of the insertion tube, and connect the proximal end of the spring tube, the adjusting mechanism can drive the spring tube movement to be in compression, stretch or in free state.By adjusting mechanism, the telescopic state of spring tube is adjusted, to change the bending force and hardness variation of insertion tube, so that insertion tube has different softness.When insertion tube enters human body cavity, adjusting mechanism adjusts the bending force of spring tube, facilitates the front insertion of insertion tube, so that insertion tube is more easily entered into human body cavity, reduce the pain of patient.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an insertion structure and an endoscope. Background Technology

[0002] With the continuous improvement of medical technology, endoscopes have been widely used in the medical field, serving as one of the important tools for examining internal organs. The demand for endoscopes has increased dramatically. During endoscopic examinations, the endoscope's insertion section needs to be inserted into the natural cavities of the patient and moved along those cavities.

[0003] Endoscopes have an insertion section for insertion into complex and winding pathways. However, once the insertion section is inside the body, there may be problems such as difficulty in determining the orientation of the tip of the insertion section, making it difficult to insert it towards the target, and the insertion section causing severe deformation of the cavity, resulting in patient discomfort. Summary of the Invention

[0004] Therefore, it is necessary to provide an insertion structure and endoscope that can determine the insertion direction of the front end and avoid severe deformation of the human body cavity, thereby reducing patient suffering, in order to address the current problems of difficulty in determining the direction of the insertion tip and cavity deformation.

[0005] An insertion structure, comprising:

[0006] An insertion tube includes a spring tube, a braided mesh, and a sheath, wherein the braided mesh is sleeved on the outside of the spring tube, the sheath is sleeved on the outside of the braided mesh, and the spring tube is distally fixed to the braided mesh; and

[0007] An adjustment mechanism is disposed at the proximal end of the insertion tube and connected to the proximal end of the spring tube. The adjustment mechanism is capable of driving the spring tube to move in a compressed, stretched, or free state.

[0008] In one embodiment, the spring tube has a plurality of spring segments, at least one of the wire diameter, pitch and material of the plurality of spring segments being different or all being the same.

[0009] In one embodiment, the spring tube includes a first spring tube and a second spring tube, the distal end of the first spring tube is fixed to the distal end of the braided mesh, the proximal end of the first spring tube is fixed to the inner wall of the braided mesh, the second spring tube is partially disposed in the first spring tube, and the distal end of the second spring tube is connected to the middle region of the first spring tube, and the proximal end of the second spring tube is connected to the adjustment mechanism.

[0010] In one embodiment, the spring tube includes a first spring tube and a second spring tube, the distal end of the first spring tube is fixed to the distal end of the braided mesh, the proximal end of the first spring tube is fixed to the inner wall of the braided mesh, and the second spring tube is partially disposed in the first spring tube.

[0011] There are multiple second spring tubes, which are sequentially connected. The distal end of the first second spring tube is connected to the middle region of the first spring tube, and the proximal end of the second spring tube is connected to the inner wall of the braided mesh. The distal end of the middle second spring tube is connected to the middle region of the preceding second spring tube, and the proximal end of the second spring tube is connected to the inner wall of the braided mesh. The distal end of the last second spring tube is connected to the middle region of the preceding second spring tube, and the proximal end of the last second spring tube is connected to the adjustment mechanism.

[0012] In one embodiment, the adjustment mechanism includes a mounting component and an adjustment component. The mounting component is disposed on the outside of the skin and fixed to the skin. The adjustment component is movably disposed on the mounting component and extends into the mounting component to connect to the spring tube. When the adjustment component moves, it can drive the spring tube to move towards the proximal end or the distal end.

[0013] In one embodiment, the installation assembly includes a connecting sleeve and a connector, the distal end of the connector being fitted onto the skin and located at the proximal end of the insertion tube, the connecting sleeve being fitted onto the proximal end of the connector, the connecting sleeve being fixedly connected to the connector, and the adjustment assembly being rotatably disposed on the connecting sleeve.

[0014] In one embodiment, the connecting cylinder has a first adjustment groove that extends from the proximal end to the distal end;

[0015] The adjustment assembly includes a knob and an adjustment member. The knob has a spiral second adjustment groove. The knob is sleeved on the connecting cylinder. The second adjustment groove partially overlaps with the first adjustment groove. The main body of the adjustment member is located in the connecting cylinder and connected to the proximal end of the spring tube. The end of the adjustment member is located in the second adjustment groove and the first adjustment groove.

[0016] When the knob is rotated along the adjusting member via the second adjusting groove, it can drive the adjusting member to move along the first adjusting groove.

[0017] In one embodiment, the adjusting member includes an adjusting pin and a fixing member. The fixing member is located inside the connecting cylinder and is fixedly connected to the proximal end of the spring tube. The adjusting pin passes through the second adjusting groove and is installed on the fixing member with the first adjusting groove.

[0018] In one embodiment, the mounting assembly further includes a limiting member that is fitted onto the connector and abuts against the connecting cylinder.

[0019] In one embodiment, the insertion tube further includes a front connector, which is disposed at a distal end between the skin and the braided mesh, and the outer wall of the front connector is exposed near the distal end.

[0020] The insertion tube also includes a rear connector, which is disposed at the proximal end between the skin and the braided mesh, and the outer wall of the rear connector is exposed near the proximal end.

[0021] An endoscope includes an operating structure and an insertion structure as described in any of the above-described technical features, wherein the operating structure is connected to the insertion structure. By adopting the above technical solution, the present invention has at least the following technical effects:

[0022] The present invention relates to an insertion structure and an endoscope, wherein the insertion tube of the insertion structure is connected to an adjustment structure, the spring tube of the insertion tube is the innermost layer, the braided mesh is sleeved on the outside of the spring tube, the skin layer is sleeved on the outside of the braided mesh, the spring tube extends from the proximal end to the distal end, the adjustment mechanism is disposed at the proximal end of the insertion tube and connected to the proximal end of the spring tube, and the distal end of the spring tube is fixed to the braided mesh.

[0023] As can be seen, the insertion structure of this invention employs a spring tube in conjunction with an adjustment mechanism. When the adjustment mechanism moves relative to the insertion tube, it can synchronously move the spring tube, thereby adjusting the changes in the spring tube's stretched / compressed state and free state, and thus regulating the bending force of the spring tube. When the adjustment mechanism moves the spring tube to a free state, it reduces the bending force of the spring tube, making it easier to bend and reducing its stiffness. When the adjustment mechanism moves the spring tube from a free state to a stretched / compressed state, it increases the bending force of the insertion tube, making the spring tube less prone to bending and increasing its stiffness.

[0024] In this way, by adjusting the state of the spring tube through the adjustment mechanism, the bending force and stiffness of the insertion tube can be changed, resulting in the insertion tube having different levels of softness and stiffness. When the insertion tube enters the human body cavity, the adjustment mechanism increases the bending force of the spring tube to facilitate the insertion of the tube forward, making it easier for the insertion tube to enter the human body cavity; after the insertion tube enters the human body cavity, the adjustment mechanism decreases the bending force of the spring tube to reduce the deformation of the human body cavity and reduce the patient's pain. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an insertion structure according to an embodiment of the present invention, which has an insertion tube according to a first embodiment;

[0026] Figure 2 for Figure 1A partial enlarged view of the front end of the insertion mechanism shown;

[0027] Figure 3 for Figure 1 A magnified view of the rear end of the insertion structure shown;

[0028] Figure 4 for Figure 1 A schematic diagram of the insertion tube of the second embodiment of the insertion structure shown being inserted into the lower digestive tract;

[0029] Figure 5 for Figure 1 An enlarged view of the front end of the insertion tube in the third embodiment of the insertion structure shown;

[0030] Figure 6 for Figure 5 The diagram shown is a schematic of the structure of the spring tube in the insertion tube;

[0031] Figure 7 for Figure 5 The diagram shown illustrates the process of inserting the insertion tube into the lower digestive tract, with the first region crossing the turning point.

[0032] Figure 8 for Figure 5 The diagram shows the process of inserting the insertion tube into the lower digestive tract, where the second region crosses the turning point;

[0033] Figure 9 for Figure 1 A partial 3D view of the insertion structure shown.

[0034] Wherein: 10, insertion structure; 100, insertion tube; 110, spring tube; 111, first spring tube; 112, second spring tube; 120, braided mesh; 130, leather layer; 140, front connecting ring; 150, rear connecting ring; 200, adjustment mechanism; 210, mounting assembly; 211, connecting cylinder; 2111, first adjustment groove; 212, connector; 213, limiting member; 220, adjustment assembly; 221, knob; 2211, second adjustment groove; 222, adjustment member; 2221, adjustment pin; 2222, fixing member; 30, lower digestive tract. Detailed Implementation

[0035] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] 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 invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] See Figures 1 to 9 This invention provides an insertion structure 10. This insertion structure 10 is used in an endoscope and can be connected to the operating structure of the endoscope. The operating structure controls the bending of the insertion structure 10, allowing it to extend into the lesion site for examination. In this embodiment, the lesion site is a human cavity such as the lower digestive tract 30, and the insertion structure 10 is inserted into the lower digestive tract 30. Of course, in other embodiments of this invention, the lesion site can also be other organs requiring examination, and the insertion structure 10 can be inserted into those organs.

[0042] Currently, for endoscopes used for patient examinations, once the endoscope's insertion part enters the human body, there may be problems such as difficulty in determining the direction of the front end of the insertion part, making it difficult to insert it in the target direction, and the insertion part causing severe deformation of the cavity, resulting in patient pain.

[0043] Therefore, the present invention provides a novel insertion structure 10, which has good bending performance and adjustable hardness to facilitate bending, enabling insertion into human body cavities. It also makes it easier for the insertion tube 100 to enter the human body cavity, avoids deformation of the human body cavity, and reduces patient discomfort. The specific structure of the insertion structure 10 is described below.

[0044] See Figures 1 to 9 In one embodiment, the insertion structure 10 includes an insertion tube 100 and an adjustment mechanism 200. The insertion tube 100 includes a spring tube 110, a braided mesh 120, and a skin layer 130. The braided mesh 120 is sleeved on the outside of the spring tube 110, and the skin layer 130 is sleeved on the outside of the braided mesh 120. The spring tube 110 is fixed to the braided mesh 120 at its distal end. The adjustment mechanism 200 is disposed at the proximal end of the insertion tube 100 and connected to the proximal end of the spring tube 110. The adjustment mechanism 200 can drive the spring tube 110 to move to be in a compressed, stretched, or free state.

[0045] The insertion tube 100 is a conduit for entering a human body cavity. The insertion tube 100 has a certain degree of flexibility, allowing it to be inserted into the cavity through variations in its bending properties. An adjustment mechanism 200 is located at and connected to the proximal end of the insertion tube 100. The adjustment mechanism 200 is used to adjust the stiffness of the insertion tube 100, thereby adjusting its bending strength. This makes insertion into the human body cavity easier, facilitates the insertion tube 100 over bends, prevents excessive bending force that could deform the human body cavity, and reduces pain during insertion.

[0046] It's worth noting that "proximal" here refers to the end of the insertion tube 100 closest to the medical staff (doctor), while "distal" refers to the end of the insertion tube 100 closest to the patient and furthest from the medical staff. As you can understand, the insertion tube 100 has a certain length and two ends along its length, namely the distal and proximal ends. When the insertion tube 100 is inserted into a body cavity, the distal end is inserted into the cavity, while the proximal end remains outside the patient's body. The terms "proximal" and "distal" are common terms in the medical device field and are only briefly explained here.

[0047] An adjustment mechanism 200 is located at the proximal end of the insertion tube 100 and is used to adjust the stiffness / bending performance of the insertion tube 100. Here, stiffness refers to how easily the insertion tube 100 is bent, thus adjusting the bending force of the insertion tube 100. When the insertion tube 100 becomes softer (internal force decreases), it is easier to bend, and the bending force is smaller; when the insertion tube 100 becomes stiffer (internal force increases), it is harder to bend, the bending force is larger, and a greater force is required to bend the insertion tube 100. The bending force / bending performance of the insertion tube 100 refers to the magnitude of the force required to bend the insertion tube 100. A small bending force means the insertion tube 100 is relatively soft, requiring only a small force to bend it; a large bending force means the insertion tube 100 is relatively stiff, requiring a larger force to bend it.

[0048] It should be noted that, in this embodiment of the invention, the stiffness / bending performance of the insertion tube 100 is adjusted by the stiffness / bending performance of the spring tube 110, and the stiffness / bending performance of the spring tube 110 is positively correlated with that of the insertion tube 100.

[0049] When the bending force of the insertion tube 100 is reduced, the insertion tube 100 is in a softer state and is easier to bend. In this case, the insertion tube 100 can be inserted more effectively into the bends of the body cavity, minimizing patient discomfort. When the bending force of the insertion tube 100 is increased, the insertion tube 100 is in a stiffer state and is not easily bent. Controlling the bending of the insertion tube 100 in this case requires increasing the internal force. The greater the internal force, the greater the force that the insertion tube 100 needs to overcome, thus altering the stiffness of the insertion tube 100.

[0050] See Figures 1 to 3 Specifically, the insertion tube 100 includes a spring tube 110, a braided mesh 120, and a skin layer 130. The skin layer 130, braided mesh 120, and spring tube 110 are sequentially arranged from the outside in, with the braided mesh 120 covering the outside of the spring tube 110 and the skin layer 130 covering the outside of the braided mesh 120. The spring tube 110 is wrapped by the braided mesh 120 and the skin layer 130. When the insertion tube 100 enters a human body cavity, the outermost skin layer 130 prevents the spring tube 110 from contacting the body, thus meeting the intended clinical purpose. The braided mesh 120 separates the inner spring tube 110 from the outer skin layer 130, preventing damage to the outer skin layer 130, while also minimizing interference with the bending and use of the insertion tube 100.

[0051] The spring tube 110 has a certain length, with its two ends being a proximal end and a distal end, respectively. Furthermore, the spring tube 110 exhibits good consistency in stiffness across all directions and utilizes space more efficiently. The distal end of the spring tube 110 is fixed to the braided mesh 120, preventing any shifting in its position. The proximal end of the spring tube 110 is connected to the adjusting mechanism 200. The adjusting mechanism 200 can drive the spring tube 110 to move relative to the braided mesh 120, allowing the spring tube 110 to be compressed, in a free state, or even stretched.

[0052] Understandably, the Bourdon tube 110 has a free state, a stretched state, and a compressed state, and the adjusting mechanism 200 can control the change of the Bourdon tube 110 between the compressed state, the free state, and the stretched state. Here, the free state means that there is no force acting inside the spring.

[0053] Assume that the Bourdon tube 110 is initially in a free state. At this time, the Bourdon tube 110 is relatively soft, with low bending force, making it easier to bend. Applying a small force allows the insertion tube 100 to more easily traverse the body's turning points. When the insertion tube 100 requires a certain degree of rigidity for accurate insertion into the body cavity, the adjusting mechanism 200 moves the Bourdon tube 110 towards the proximal or distal end, placing it in a stretched or compressed state to increase its bending force. This makes the Bourdon tube 110 less prone to bending, meaning the insertion tube 100 becomes harder, and its bending force increases. At this point, operating the insertion tube 100 requires increased internal force. The increased internal force means the insertion tube 100 needs to overcome a greater force, facilitating insertion into the body cavity.

[0054] Assume that the Bourdon tube 110 is initially in a stretched state. At this time, the Bourdon tube 110 is relatively stiff and not easily bent; that is, the insertion tube 100 becomes stiffer, and its bending force increases. Therefore, operating the insertion tube 100 requires increasing internal force. This increased internal force means the insertion tube 100 needs to overcome a greater force to facilitate insertion into the human body cavity. When it is necessary to soften the insertion tube, the adjusting mechanism 110 moves the Bourdon tube 110 towards the distal end, gradually changing it from a stretched state to a free state. If the Bourdon tube 110 moves a certain distance towards the distal end and remains in a stretched state, it has softened compared to the previous state. In other words, the process of the stretched Bourdon tube 110 moving towards a free state is a process of softening, with its softness gradually increasing, reaching its softest point in the free state. When it is necessary to stiffen the Bourdon tube 110, the adjusting mechanism 200 can stretch the Bourdon tube 110.

[0055] It is worth noting that the principle of the initial state of the spring tube 110 being compressed and the initial state being stretched is essentially the same, and will not be elaborated upon here. Moreover, in order to better describe the adjustment of the stiffness of the spring tube 110, the following text will directly describe it through the compressed state, stretched state, and free state. The insertion structure 10 of the present invention drives the spring tube 110 to move through the adjustment mechanism 200, so that the spring tube 110 is in a free state, a compressed state, or a stretched state, thereby adjusting the bending force of the spring tube 110 and thus changing the stiffness of the insertion tube 100.

[0056] See Figures 1 to 8The insertion structure 10 in the above embodiment employs a spring tube 110 in conjunction with an adjustment mechanism 200. The adjustment mechanism 200 can drive the spring tube 110 to move towards the proximal or distal end, thereby changing the spring tube 110 between a stretched / compressed state and a free state to adjust the degree of bending of the insertion tube 100 and alter its stiffness. When the insertion tube 100 enters the human cavity, the adjustment mechanism 200 controls the spring tube 110 to stretch or compress to increase its bending force, facilitating forward insertion and making it easier for the insertion tube 100 to enter the human cavity. When the insertion tube 100 enters the human cavity, the adjustment mechanism 200 controls the spring tube 110 to be in a free state to reduce its bending force, thereby reducing deformation of the human cavity and alleviating patient discomfort.

[0057] In this embodiment of the invention, a spring tube 110 is used as the wall of the insertion tube 100, and combined with an adjustment mechanism 200, the bending force of the insertion tube 100 is adjusted, thereby adjusting the hardness of the insertion tube 100 and dynamically changing its performance to adapt to different positions in the human body cavity. This type of spring tube 110 has strong expandability, enabling adjustment of the bending force in different areas of the insertion tube 100; moreover, as the wall of the insertion tube 100, the spring tube 110 has a certain degree of hardness, providing support and protection. When changing the hardness of the insertion tube 100, it can directly act on the outermost skin layer 130, resulting in high adjustment efficiency. In this embodiment of the invention, the internal threaded tube of the insertion tube is replaced with a spring tube, and the internal force of the spring tube is changed through the adjustment mechanism, thereby achieving changes in the overall hardness of the insertion tube. Because the spring tube is located on the outer periphery, the consistency of hardness changes in all directions is better, and space utilization is more rational.

[0058] Of course, in other possible implementations, the spring tube 110 can also be disposed in the insertion tube 100. In this case, the spring tube 110 cooperates with the adjusting mechanism 200 on the inner side of the insertion tube 100 to realize the change of internal force, thereby also realizing the change of bending stiffness of the insertion tube 100. In this embodiment of the invention, only the spring tube 110 is described as the tube wall of the insertion tube 100.

[0059] See Figures 1 to 4 In one embodiment, the spring tube 110 has multiple spring segments, and at least one of the wire diameter, pitch, and material of the multiple spring segments may be different or all the same. That is, the spring tube 110 can be divided into multiple spring segments along its length, and the multiple spring segments are connected in series to form a complete spring tube 110. Moreover, the wire diameter, pitch, and material of the multiple spring segments may be the same, different, or partially the same and partially different. It is worth noting the cross-sectional dimensions of the material used to make the spring tube 110. Assuming that the spring tube 110 is made of steel wire, the diameter of the steel wire is the wire diameter of the spring tube 110.

[0060] Optionally, the wire diameter, pitch, and material of multiple spring segments are exactly the same. That is, the spring tube 110 is made of the same wire diameter, the same pitch, and the same material. In this case, the spring tube 110 has only one stiffness when stretched or compressed. When the adjusting mechanism 200 drives the spring tube 110 to move so that the spring tube 110 is in a free state, the entire spring tube 110 becomes softer and easier to bend; when the adjusting mechanism 200 drives the spring tube 110 to move to a compressed or stretched state, the entire spring tube 110 becomes stiffer and not easy to bend.

[0061] Optionally, the wire diameter, pitch, and material of the multiple spring segments may differ in at least one of the following: For example, the spring segments may use the same material, but their wire diameter and / or pitch may differ, or some may be different while others are the same. Alternatively, the spring segments may have the same pitch, but their wire diameter and / or material may differ, or some may be different while others are the same. Of course, the wire diameter, pitch, and material of each spring segment may not be the same.

[0062] It is worth noting that the different wire diameters, pitches, and materials of each spring segment result in different bending forces / bending properties, meaning that the stiffness of each spring segment will vary. Therefore, when the adjusting mechanism 200 adjusts the bending properties of the Bourdon tube 110, it will adjust the stiffness of each spring segment. For example, when a spring segment needs to cross a bend, the adjusting mechanism 200 adjusts the stiffness of the entire Bourdon tube 110, making that segment softer, so that medical personnel can apply the appropriate bending force to make that segment cross the bend. When the next spring segment needs to cross a bend, that segment is softened again to cross the bend.

[0063] Optionally, the spaced spring segments are made of the same material, wire diameter, and pitch, so that the spaced spring segments of the spring tube 110 have the same bending performance. This makes it easier for medical staff to adjust the bending force of the spring tube 110, thereby making it easier to control the spring tube 110 and making it easier for the spring tube 110 to pass through the turning point, reducing the patient's pain.

[0064] Optionally, the Bourdon tube 110 has two or three types of spring segments, each type of spring segment being made of the same material, wire diameter, and pitch. When the Bourdon tube 110 has two types of spring segments, adjacent spring segments are of different types, and the spring segments of each type are connected in series to form a complete spring segment. When the Bourdon tube 110 has three types of spring segments, two types of spring segments can be arranged alternately, and the third type of spring segment can be arranged near the end after the above two types are connected.

[0065] Of course, in other embodiments of the present invention, various types of spring segments can be provided according to usage requirements, as long as the bending force of the spring segment can be adjusted so that the spring tube 110 softens under the adjustment mechanism 200 and can pass the turning position. Moreover, the spring tube 110 can also adopt more types of spring segments.

[0066] See Figures 1 to 4 In the first embodiment of the present invention, the wire diameter, material, and pitch of each spring segment of the spring tube 110 are the same. That is, the spring tube 110 is a single type of spring tube 110. When the bending force of the spring tube 110 is adjusted by the adjusting mechanism 200, the bending force and stiffness of the spring tube 110 change as a whole. When the adjusting mechanism 200 moves the spring tube 110 into a compressed or stretched state, the spring tube 110 becomes stiffer overall, thereby increasing the bending force of the spring tube 110. When the adjusting mechanism 200 moves the spring tube 110 from a compressed / stretched state to a free state, the overall stiffness of the spring tube 110 changes from stiff to soft, thereby reducing the bending force of the spring tube 110. When the adjusting mechanism 200 moves the spring tube 110 from a free state to a stretched / compressed state, the overall stiffness of the spring tube 110 changes from soft to stiff, thereby increasing the bending force of the spring tube 110.

[0067] When the adjusting mechanism 200 causes the spring tube 110 to change between a free state, a compressed state, and a stretched state, the overall stiffness of the spring tube 110 changes. Medical personnel can adjust the bending force of the spring tube 110 according to the human body environment. When the spring tube 110 needs to pass through a turning point at a certain position, the adjusting mechanism 200 moves the spring tube 110 to a free state, making the spring tube 110 softer; after the spring tube 110 passes through the turning point and runs in a stable space, the adjusting mechanism 200 compresses / stretches the spring tube 110, making the spring tube 110 stiffer. In this way, the insertion structure 10 can adjust the bending force of the spring tube 110 through the adjusting mechanism 200, so that the insertion tube 100 can adapt to the insertion operation at different positions, making it easier for the insertion tube 100 to enter the human body cavity, and solving the problem that the tip of the insertion structure 10 is difficult to insert forward during surgery.

[0068] See Figure 4 In the second embodiment of the present invention, by changing at least one of the wire diameter, material, or pitch of each spring segment of the spring tube 110, the structure of the spring tube 110 can be configured according to different application scenarios. It is understood that human cavities are relatively complex, and by manufacturing targeted spring tubes 110 based on the actual application scenario of the insertion tube 100, the spring tube 110 can accurately fit into the human cavities.

[0069] In this embodiment, only the lower digestive tract 30 is used as an example for illustration, and the insertion tube 100 is inserted into the lower digestive tract 30. The spring tube 110 includes eight spring segments to accommodate the lower digestive tract 30, which has four bends. The eight spring segments are labeled abababc, where the bending force of spring segment a is less than that of spring segment b, which is less than that of spring segment c. The bending force of spring segments abc is achieved through at least one of their material, wire diameter, and pitch. Furthermore, the abababc spring segments are connected in series to form a complete spring tube 110.

[0070] When the adjusting mechanism 200 moves the Bourdon tube 110 to a free state, the Bourdon tube 110 softens as a whole. However, the degree of softening varies among the different spring segments within the Bourdon tube 110: spring segment a is the softest, followed by spring segment b, and then spring segment c. In other words, the softness of spring segment a > the softness of spring segment b > the softness of spring segment c. Therefore, applying a small bending force to the Bourdon tube 110 will cause spring segment a to bend. When the insertion tube 100 enters the lower digestive tract 30, the shortest spring segment, i.e., spring segment a, is positioned at the bend. By using different materials, wire diameters, and pitches to create spring segments with varying degrees of softness, the insertion tube 100 can achieve the most suitable softness distribution after insertion into the human cavity, facilitating examination by the doctor.

[0071] like Figure 4 As shown, the lower digestive tract 30 has four bends, and the corresponding spring tube 110 has four spring segments (a). During the insertion of the insertion tube 100 into the lower digestive tract 30, the bending force of the insertion tube 100 is adjusted by the adjusting mechanism 200 to ensure the insertion tube 100 enters the lower digestive tract 30. Simultaneously, after the insertion tube 100 is positioned in the lower digestive tract 30, the four spring segments (a) of the spring tube 110 are positioned at the four bends to reduce patient discomfort during the procedure; the spring segments (b) and (c) are located at other corresponding positions.

[0072] Furthermore, during the surgery, the insertion structure 10 of this invention cooperates with the adjustment mechanism within the operating structure to change the length of each spring segment to meet surgical requirements. For example, the length of spring segment a is L during initial compression, and 3L or other lengths during stretching. It is worth noting that the operating structure and its adjustment mechanism that cooperate with the insertion structure 10 are existing technologies and will not be described in detail here.

[0073] Optionally, the lengths of each spring segment may be the same and / or different. Optionally, each spring tube 110 may be formed by splicing or by integral molding, as long as the structural strength of the spring tube 110 is guaranteed.

[0074] See Figure 1 , Figures 5 to 8In one embodiment, the spring tube 110 includes a first spring tube 111 and a second spring tube 112. The distal end of the first spring tube 111 is fixed to the distal end of the braided mesh 120, and the proximal end of the first spring tube 111 is fixed to the inner wall of the braided mesh 120. The second spring tube 112 is partially disposed within the first spring tube 111, and the distal end of the second spring tube 112 is connected to the middle region of the first spring tube 111, while the proximal end of the second spring tube 112 is connected to the adjustment mechanism 200. In other words, the spring tube 110 in this embodiment is a combined spring tube 110, which allows for adjustment of the hardness of the insertion area.

[0075] Specifically, the spring tube 110 includes a first spring tube 111 and a second spring tube 112. The first spring tube 111 serves as the tube wall of the insertion tube 100, that is, the first spring tube 111 is located inside the braided mesh 120, and the second spring tube 112 is located on the innermost side. The braided mesh 120, the first spring tube 111 and the second spring tube 112 are arranged sequentially from the outside to the inside, and the distal part of the second spring tube 112 is located inside the first spring tube 111.

[0076] Furthermore, the distal end of the first spring tube 111 is fixed to the distal end of the braided mesh 120, and the proximal end of the first spring tube 111 is fixed to the inner wall of the braided mesh 120 away from the distal end, such as... Figure 6 As shown. That is to say, the overall length of the first spring tube 111 will not change. The first spring tube 111 has a hollow structure, the distal part of the second spring tube 112 is located inside the hollow part of the first spring tube 111, the distal end of the second spring tube 112 is connected to the middle region of the first spring tube 111, and the proximal end of the second spring tube 112 is connected to the adjustment mechanism 200.

[0077] Optionally, the proximal end of the first spring tube 111 is fixed to the middle region of the braided mesh 120. The distal end of the first spring tube 111 is fixed to the distal end of the braided mesh 120, and the proximal end of the first spring tube 111 is fixed to the middle region of the braided mesh 120. Figure 6 The image is only a simple illustration and not drawn in detail.

[0078] The following explanation will take the initial state of the first spring tube 111 being in a stretched state as an example. The principle of the initial state of the first spring tube 111 being in a compressed state is essentially the same as that of the initial state being in a stretched state, and will not be repeated here.

[0079] When the adjusting mechanism 200 stretches the second spring tube 112 (moving towards its proximal end), the adjusting mechanism 200 applies a dragging force to the second spring tube 112, which in turn can act on the first spring tube 111. Since both ends of the first spring tube 111 are fixed, when the second spring tube 112 is stretched, it will cause the portion of the first spring tube 111 from the connection point between the second spring tube 112 and the first spring tube 111 to the proximal end of the first spring tube 111 to gradually change from a stretched state to a free state. Correspondingly, when the second spring tube 112 is stretched, it will cause the portion of the first spring tube 111 from the connection point between the second spring tube 112 and the first spring tube 111 to the distal end of the first spring tube 111 to be stretched.

[0080] In this way, the bending force of the first spring tube 111 from the connection between the second spring tube 112 and the first spring tube 111 to the proximal portion of the first spring tube 111 will decrease and become softer; at the same time, the bending force of the first spring tube 111 from the connection between the second spring tube 112 and the first spring tube 111 to the distal portion of the first spring tube 111 will increase and become stiffer.

[0081] Similarly, when the adjusting mechanism 200 compresses the second spring tube 112 (moving towards the distal end), the adjusting mechanism 200 applies a pushing force to the second spring tube 112, which in turn can act on the first spring tube 111. Since both ends of the first spring tube 111 are fixed, when the second spring tube 112 is compressed, it will cause the first spring tube 111 to stretch from the connection between the second spring tube 112 and the first spring tube 111 to the proximal end of the first spring tube 111. Correspondingly, when the second spring tube 112 is compressed, it will cause the first spring tube 111 to gradually change from a stretched state to a free state from the connection between the second spring tube 112 and the first spring tube 111 to the distal end of the first spring tube 111.

[0082] In this way, the bending force of the first spring tube 111 from the connection between the second spring tube 112 and the first spring tube 111 to the proximal portion of the first spring tube 111 will increase and become stiffer; at the same time, the bending force of the first spring tube 111 from the connection between the second spring tube 112 and the first spring tube 111 to the distal portion of the first spring tube 111 will decrease and become softer.

[0083] In one embodiment, the spring tube 110 includes a first spring tube 111 and a second spring tube 112. The distal end of the first spring tube 111 is fixed to the distal end of the braided mesh 120, and the proximal end of the first spring tube 111 is fixed to the inner wall of the braided mesh 120. The second spring tube 112 is partially disposed within the first spring tube 111. Multiple second spring tubes 112 are sequentially connected and nested together. The distal end of the first second spring tube 112 is connected to the middle region of the first spring tube 111, and the proximal end of the first second spring tube 112 is connected to the inner wall of the braided mesh 120. The distal end of the middle second spring tube 112 is connected to the middle region of the preceding second spring tube 112, and the proximal end of the middle second spring tube 112 is connected to the inner wall of the braided mesh 120. The distal end of the last second spring tube 112 is connected to the middle region of the preceding second spring tube 112, and the proximal end of the last second spring tube 112 is connected to the adjustment mechanism 200.

[0084] In other words, multiple second spring tubes 112 are connected in series, and the bending force of the first spring tube 111 in different regions is changed through the second spring tubes 112 connected in series inside the first spring tube 111, so as to meet the bending force requirements of the insertion tube 100 at different positions of insertion into the human body cavity.

[0085] The structure and arrangement of the first spring tube 111 will not be described in detail here. Only an example is given to illustrate how the second spring tubes 112 are installed when the number of second spring tubes 112 is different. Assume there are two second spring tubes 112. The distal end of one second spring tube 112 is fixedly connected to the middle region of the first spring tube 111, and the proximal end of this second spring tube 112 is fixedly connected to the braided mesh 120. The distal end of the other second spring tube 112 is connected to the middle region of one of the second spring tubes 112, and the proximal end of this second spring tube 112 is connected to the adjusting mechanism 200.

[0086] Assuming there are three second spring tubes 112, the distal end of the front second spring tube 112 is fixedly connected to the middle region of the first spring tube 111, and the proximal end of the front second spring tube 112 is fixedly connected to the braided mesh 120. The distal end of the middle second spring tube 112 is connected to the middle region of the front second spring tube 112, and the proximal end of the middle second spring tube 112 is fixedly connected to the braided mesh 120. The distal end of the distal second spring tube 112 is fixedly connected to the middle region of the middle second spring tube 112, and the proximal end of the distal second spring tube 112 is connected to the adjusting mechanism 200.

[0087] Of course, in other embodiments of the present invention, the number of second spring tubes 112 can be greater. The connection principle of more second spring tubes 112 is essentially the same as the connection principle when there are two or three second spring tubes 112, and will not be repeated here. It is worth noting that the adjustment process when there are multiple second spring tubes 112 is essentially the same as the adjustment process when there is only one second spring tube 112, and will not be repeated here. The following describes the adjustment process when there is only one first spring tube 111.

[0088] See Figure 1 , Figures 5 to 8 In the third embodiment, the spring tube 110 includes a first spring tube 111 and a second spring tube 112. Both ends of the first spring tube 111 are fixedly connected to the braided mesh 120. The distal end of the second spring tube 112 is fixed to the middle region of the first spring tube 111, and the proximal end of the second spring tube 112 is connected to the adjustment mechanism 200. In this case, the distal end of the second spring tube 112 divides the first spring tube 111 into two regions: a first region e and a second region f. The first region e refers to the portion of the first spring tube 111 from the connection point between the second spring tube 112 and the first spring tube 111 to the distal end of the first spring tube 111. The second region f refers to the portion of the first spring tube 111 from the connection point between the second spring tube 112 and the first spring tube 111 to the proximal end of the first spring tube 111. Figure 5 and Figure 6 As shown, Figure 6 The part within the dashed box is the connection point between the second spring tube 112 and the first spring tube 111.

[0089] When increasing the softness of the second region f, the adjustment mechanism 200 is operated to cause the adjustment mechanism 200 to drive the second spring tube 112 to stretch. At this time, the second spring tube 112 will drive the first region e to stretch, and the second region f will gradually change from the stretched state to the free state. At this time, the first region e will become harder and the bending force will increase, while the second region f will become softer and the bending force will decrease.

[0090] When increasing the softness of the first region e, the adjustment mechanism 200 is operated to compress the second spring tube 112. At this time, the second spring tube 112 causes the first region e to gradually change from a stretched state to a free state, and the second region f to stretch. Simultaneously, the first region e softens, and the bending force decreases, while the second region f hardens, and the bending force increases. Thus, during use, the hardness of the first region e and the second region f can be adjusted according to the position of the insertion tube 100 within the human body cavity, ensuring that the insertion tube 100 is in its softest state when passing through the turning point.

[0091] The adjustment mechanism 200 reduces the bending force of the first region e and increases the bending force of the second region f, or increases the bending force of the first region e and decreases the bending force of the second region f, achieving a change to the softest position. When the insertion structure 10 of this embodiment is inserted into the lower digestive tract 30, when the first region e of the insertion tube 100 enters the turning position, the adjustment mechanism 200 reduces the bending force of the first region e and increases the bending force of the second region f. At this time, the first region e of the insertion tube 100 can pass the turning position, allowing the insertion tube 100 to pass the turning position more comfortably, such as... Figure 7 As shown. When the second region f of the insertion tube 100 enters the turning position, the operating adjustment mechanism 200 increases the bending force of the first region e and decreases the bending force of the second region f. At this time, the second region f of the insertion tube 100 can pass the turning position, allowing the insertion tube 100 to pass the turning position more smoothly, as shown. Figure 8 As shown.

[0092] By operating the adjustment mechanism 200 to change the bending force of the first region e and the second region f, the stiffness of the insertion tube 100 at different positions can be adjusted, thereby ensuring that the softest part of the insertion tube 100 always contacts the turning point when it passes through any turning point, thus minimizing patient discomfort. In other words, when the insertion tube 100 passes through the four turning points of the lower digestive tract 30, it always contacts the turning point through its softest part. Of course, in other embodiments of the present invention, the number of first regions e and second regions f of the insertion tube 100 can also be multiple.

[0093] See Figures 1 to 3 In one embodiment, the adjustment mechanism 200 includes a mounting component 210 and an adjustment component 220. The mounting component 210 is disposed on the outside of the skin layer 130 and fixed to the skin layer 130. The adjustment component 220 is movably disposed on the mounting component 210 and extends into the mounting component 210 to connect to the spring tube 110. When the adjustment component 220 moves, it can drive the spring tube 110 to move towards the proximal end or the distal end.

[0094] Mounting assembly 210 is a mounting component of adjustment mechanism 200, enabling connection between adjustment mechanism 200 and the skin layer 130 proximal to insertion tube 100. Mounting assembly 210 is at least partially fixed to the outer side of the proximal end of skin layer 130, thus securing adjustment mechanism 200. Furthermore, mounting assembly 210 is also connected to the endoscope's operating structure, facilitating connection between the operating structure and insertion tube 100 and enabling bending control of insertion tube 100.

[0095] The adjusting component 220 is movably disposed on the outside of the mounting component 210, and the inside of the adjusting component 220 can extend into the mounting component 210 to connect to the proximal end of the spring tube 110. When the adjusting component 220 moves relative to the mounting component 210, the adjusting component 220 will drive the spring tube 110 to move synchronously inside the mounting component 210, thereby compressing, stretching, or placing the spring tube 110 in a free state.

[0096] When the adjusting component 220 moves the Bourdon tube 110 to a free state (e.g., towards the proximal end), the bending force of the Bourdon tube 110 decreases, and the Bourdon tube 110 softens, so a small force is required to bend the insertion tube 100. When the adjusting component 220 moves the Bourdon tube 110 to a compressed / stretched state (e.g., towards the distal end), the bending force of the Bourdon tube 110 increases, and the Bourdon tube 110 stiffens, requiring a larger force to bend the insertion tube 100.

[0097] It is worth noting that the content here only introduces the specific structure of the adjustment mechanism 200. The purpose of the adjustment mechanism 200 changing from stiff to soft has already been mentioned above and will not be repeated here.

[0098] See Figures 1 to 3 In one embodiment, the mounting assembly 210 includes a connecting cylinder 211 and a connector 212. The proximal end of the connector 212 is sleeved on the skin layer 130 and located at the proximal end of the insertion tube 100. The connecting cylinder 211 is sleeved on the proximal end of the connector 212. The connecting cylinder 211 and the connector 212 are fixedly connected. The adjusting assembly 220 is rotatably disposed on the connecting cylinder 211.

[0099] The connecting cylinder 211 is hollow, with its distal end fitted over the outer side of the skin layer 130 and located near the proximal end of the insertion tube 100. The proximal end of the connecting cylinder 211 extends away from the insertion tube 100. This allows the proximal end of the connecting cylinder 211 to connect to the operating structure, establishing a connection between the insertion tube 100 and the operating structure. A connector 212 is positioned between the skin layer 130 and the connecting cylinder 211, reliably fixing the connecting cylinder 211 to the skin layer 130 and preventing any shifting of the connecting cylinder 211.

[0100] See Figures 1 to 3 In one embodiment, the mounting assembly 210 further includes a limiting member 213, which is sleeved on the connector 212 and abuts against the connecting cylinder 211. The limiting member 213 is sleeved on the outside of the connector 212, and can abut against the distal end of the connecting cylinder 211 to prevent the connecting cylinder 211 from becoming loose. Optionally, the limiting member 213 is a clamping nut, and an external thread is provided on the connector 212 to mate with the clamping nut.

[0101] In one embodiment, the connecting cylinder 211 has a first adjustment groove 2111 extending from the proximal end to the distal end. When the adjusting component 220 moves relative to the connecting cylinder 211, the adjusting component 220 can drive the spring tube 110 to move along the first adjustment groove 2111 toward the proximal end or the distal end, thereby adjusting the stiffness of the spring tube 110.

[0102] See Figures 1 to 3 , Figure 9 In one embodiment, the adjustment assembly 220 includes a knob 221 and an adjustment member 222. The knob 221 has a spiral second adjustment groove 2211. The knob 221 is sleeved on the connecting cylinder 211. The second adjustment groove 2211 partially overlaps with the first adjustment groove 2111. The main body of the adjustment member 222 is located in the connecting cylinder 211 and connected to the proximal end of the spring tube 110. The end of the adjustment member 222 is located in the second adjustment groove 2211 and the first adjustment groove 2111. When the knob 221 rotates along the adjustment member 222 through the second adjustment groove 2211, it can drive the adjustment member 222 to move along the first adjustment groove 2111.

[0103] The knob 221 is rotatably mounted on the outside of the connecting cylinder 211. The adjusting member 222 has a second adjusting groove 2211, which is spirally arranged. The second adjusting groove 2211 partially overlaps with the first adjusting groove 2111. One end of the adjusting member 222 passes through the second adjusting groove 2211 and the first adjusting groove 2111 and extends into the connecting cylinder 211, connecting to the proximal end of the spring tube 110. When the knob 221 is rotated, it drives the adjusting member 222 to move, with a tendency to spiral upward or downward. However, due to the guiding and limiting effect of the first adjusting groove 2111, the adjusting member 222 can only move along the first adjusting groove 2111 towards the proximal or distal end, thereby achieving the compression or extension adjustment of the spring tube 110.

[0104] Assuming the initial state of the spring tube 110 is compressed, when the knob 221 is turned clockwise, the knob 221 will rotate and rise relative to the connecting cylinder 211. This causes the knob 221 to move the adjusting member 222 towards the proximal end along the first adjusting groove 2111, in conjunction with the second adjusting groove 2211 and the first adjusting groove 2111. Consequently, the adjusting member 222 causes the spring tube 110 to gradually move towards a free state, reducing the bending force of the spring tube 110 and making it softer. When the knob 221 is turned counterclockwise, the knob 221 will spiral downwards relative to the connecting cylinder 211. This causes the knob 221 to move the adjusting member 222 towards the distal end along the first adjusting groove 2111, in conjunction with the second adjusting groove 2211 and the first adjusting groove 2111. This allows the adjusting member 222 to compress the spring tube 110, increasing its bending force and making it harder.

[0105] Optionally, there are two first adjustment slots 2111 and two second adjustment slots 2211, with each second adjustment slot 2211 corresponding to one of the two first adjustment slots 2111. Additionally, there are two adjustment members 222, each disposed in its corresponding adjustment slot. For example, the two second adjustment slots 2211 are symmetrically arranged to ensure smooth rotation of the knob 221.

[0106] See Figures 1 to 3 , Figure 9 In one embodiment, the adjusting member 222 includes an adjusting pin 2221 and a fixing member 2222. The fixing member 2222 is located inside the connecting cylinder 211 and is fixedly connected to the proximal end of the spring tube 110. The adjusting pin 2221 passes through the second adjusting groove 2211 and is installed on the fixing member 2222 with the first adjusting groove 2111.

[0107] Adjusting pin 2221 is inserted into the second adjusting groove 2211 and the first adjusting groove 2111, and extends into the connecting cylinder 211. Adjusting pin 2221 ensures sliding performance while preventing it from falling out of the first adjusting groove 2111 and the second adjusting groove 2211. Fixing member 2222 is located in the connecting cylinder 211 and is fixedly connected to the proximal end of the spring tube 110. Adjusting pin 2221 is located in fixing member 2222. Thus, when adjusting pin 2221 moves along the first adjusting groove 2111 in cooperation with the second adjusting groove 2211 and the first adjusting groove 2111, it can drive the spring tube 110 to move synchronously through fixing member 2222, thereby achieving adjustment of the stiffness of the spring tube 110.

[0108] Optionally, the adjusting pin 2221 can be a pin, bolt, or other adjustable limiting post, etc. Optionally, the fixing member 2222 is fixed to the proximal end of the spring tube 110 by welding or bonding.

[0109] See Figures 1 to 3 In one embodiment, the insertion tube 100 further includes a front connector 140, which is disposed distally between the skin layer 130 and the braided mesh 120, with the outer wall of the front connector 140 protruding near the distal end. The front connector 140 is the port proximal to the braided mesh 120. Since the braided mesh 120 is relatively soft, the front connector 140, positioned on the outer side of the proximal end of the braided mesh 120, enables the design of the distal opening size of the insertion tube 100. Furthermore, the proximal end of the spring tube 110 is fixed to the front connector 140 via the braided mesh 120.

[0110] See Figures 1 to 3In one embodiment, the insertion tube 100 further includes a rear connector 150, which is disposed proximally between the skin layer 130 and the braided mesh 120, with the outer wall of the rear connector 150 protruding near its proximal end. The rear connector 150 is disposed on the outer side of the distal end of the braided mesh 120. The rear connector 150 has essentially the same function as the front connector 140, except that the rear connector 150 is not connected to the proximal end of the spring tube 110, which will not be described in detail here.

[0111] It is worth noting that the structural form of the front connecting ring 140 and the rear connecting ring 150 is not limited in principle, as long as they can be set at the end of the woven mesh 120 to achieve the fixation of the woven mesh 120. Optionally, the front connecting ring 140 and the rear connecting ring 150 can be fixed to the woven mesh 120 by welding or bonding.

[0112] See Figures 1 to 8 The insertion structure 10 of this invention, through the adjustment mechanism 200 cooperating with the spring tube 110 in the insertion tube 100, adjusts the bending force of the spring tube 110, thereby adjusting the stiffness of the insertion tube 100. This allows the insertion tube 100 to pass over turning points through its softer portion, reducing patient discomfort. The adjustment mechanism 200 changes the bending force of the insertion tube 100 by stretching or compressing the spring tube 110, enabling the insertion tube 100 to have different stiffness levels to meet the needs of different positions in the human body cavity. Simultaneously, the adjustment mechanism 200 can also increase the bending force of the insertion tube 100, increasing the force that medical personnel need to overcome when bending the insertion tube 100, thus changing the stiffness of the insertion tube 100. This makes the insertion tube 100 easier to insert into the body, and by softening the insertion tube 100 through the adjustment mechanism 200, deformation of the cavity caused by the stiffness of the insertion tube 100 is prevented, further reducing patient discomfort.

[0113] The present invention also provides an endoscope, including an operating structure and an insertion structure 10 as described in any of the above embodiments, wherein the operating structure is connected to the insertion structure 10. When the endoscope of the present invention uses the insertion structure 10 of the above embodiments, the rigidity of the insertion tube 100 can be adjusted, making the insertion tube 100 easier to insert into human cavities. Simultaneously, the adjustment mechanism 200 can also soften the insertion tube 100, allowing it to pass through softer sections and over bends, reducing patient discomfort.

[0114] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An insertion structure (10), characterized in that, include: An insertion tube (100) includes a spring tube (110), a braided mesh (120), and a leather layer (130), wherein the braided mesh (120) is sleeved on the outside of the spring tube (110), the leather layer (130) is sleeved on the outside of the braided mesh (120), and the spring tube (110) is distally fixed to the braided mesh (120); and An adjustment mechanism (200) is disposed at the proximal end of the insertion tube (100) and connected to the proximal end of the spring tube (110). The adjustment mechanism (200) can drive the spring tube (110) to move to be in a compressed, stretched or free state. The spring tube (110) includes a first spring tube (111) and a second spring tube (112). The distal end of the first spring tube (111) is fixed to the distal end of the braided mesh (120), and the proximal end of the first spring tube (111) is fixed to the inner wall of the braided mesh (120). The second spring tube (112) is partially disposed in the first spring tube (111). The distal end of the second spring tube (112) is connected to the middle region of the first spring tube (111), and the proximal end of the second spring tube (112) is connected to the adjustment mechanism (200); or, there are multiple second spring tubes (112), which are sequentially connected and nested together. The distal end of the first second spring tube (112) is connected to the middle region of the first spring tube (111), and the proximal end of the first second spring tube (112) is connected to the inner wall of the braided mesh (120). The distal end of the middle second spring tube (112) is connected to the middle region of the previous second spring tube (112), and the proximal end of the middle second spring tube (112) is connected to the inner wall of the braided mesh (120). The distal end of the last second spring tube (112) is connected to the middle region of the previous second spring tube (112), and the proximal end of the last second spring tube (112) is connected to the adjustment mechanism (200).

2. The insertion structure (10) according to claim 1, characterized in that, The adjustment mechanism (200) includes a mounting component (210) and an adjustment component (220). The mounting component (210) is disposed on the outside of the skin layer (130) and fixed to the skin layer (130). The adjustment component (220) is movably disposed on the mounting component (210) and extends into the mounting component (210) to connect to the spring tube (110). When the adjustment component (220) moves, it can drive the spring tube (110) to move towards the proximal end or the distal end.

3. The insertion structure (10) according to claim 2, characterized in that, The installation assembly (210) includes a connecting sleeve (211) and a connector (212). The distal end of the connector (212) is sleeved on the skin (130) and located at the proximal end of the insertion tube (100). The connecting sleeve (211) is sleeved on the proximal end of the connector (212). The connecting sleeve (211) and the connector (212) are fixedly connected. The adjustment assembly (220) is rotatably disposed on the connecting sleeve (211).

4. The insertion structure (10) according to claim 3, characterized in that, The connecting cylinder (211) has a first adjustment groove (2111) that extends from the proximal end to the distal end; The adjustment assembly (220) includes a knob (221) and an adjustment member (222). The knob (221) has a spiral second adjustment groove (2211). The knob (221) is sleeved on the connecting cylinder (211). The second adjustment groove (2211) partially overlaps with the first adjustment groove (2111). The main body of the adjustment member (222) is located in the connecting cylinder (211) and connected to the proximal end of the spring tube (110). The end of the adjustment member (222) is located in the second adjustment groove (2211) and the first adjustment groove (2111). When the knob (221) rotates along the adjusting member (222) via the second adjusting groove (2211), it can drive the adjusting member (222) to move along the first adjusting groove (2111).

5. The insertion structure (10) according to claim 4, characterized in that, The adjusting component (222) includes an adjusting pin (2221) and a fixing component (2222). The fixing component (2222) is located inside the connecting cylinder (211) and is fixedly connected to the proximal end of the spring tube (110). The adjusting pin (2221) passes through the second adjusting groove (2211) and is installed on the fixing component (2222) with the first adjusting groove (2111).

6. The insertion structure (10) according to claim 3, characterized in that, The mounting assembly (210) further includes a limiting member (213), which is sleeved on the connector (212) and abuts against the connecting cylinder (211).

7. The insertion structure (10) according to claim 1, characterized in that, The insertion tube (100) further includes a front connector (140), which is disposed at the distal end between the skin (130) and the braided mesh (120), and the outer wall of the front connector (140) is exposed near the distal end. The insertion tube (100) also includes a rear connector (150), which is disposed at the proximal end between the skin (130) and the braided mesh (120), and the outer wall of the rear connector (150) is exposed near the proximal end.

8. An endoscope, characterized in that, It includes an operating structure and an insertion structure (10) as described in any one of claims 1 to 7, wherein the operating structure is connected to the insertion structure (10).

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