Lifting structure, operating handle and endoscope

Abstract

The invention discloses a lifting structure, an operating handle and an endoscope, and relates to the field of medical instruments, the lifting structure is suitable for being installed on the operating handle of the endoscope, an instrument tube is arranged in the operating handle, the lifting structure is characterized in that the lifting structure is provided with a leading-in side and a leading-out side which are far away from each other, the leading-in side is used for leading in the instrument tube, and the leading-out side is used for leading out the instrument tube; the lifting structure is provided with a lifting part, and the lifting part is used for lifting at least part of the height of the instrument tube. The lifting structure can be arranged in the operating handle, and the lifting part can increase the height of the instrument tube, that is, the lifting part can support and lift the instrument tube. The lifting part can prevent the instrument tube from being bent and wrinkled, so that the bending risk of the instrument tube is eliminated, and the use reliability and passing ability of the instrument tube are improved. Instrument tubes in the prior art may have dislocation in the vertical direction, but under the lifting action of a lifting structure, the instrument tubes have redundancy, and the instrument tubes arranged in the redundancy mode can buffer negative effects caused by dislocation or pulling.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a lifting structure, an operating handle and an endoscope. Background Art

[0002] With the continuous development of medical technology, endoscopes have been widely used in the diagnosis and treatment of diseases. When using an endoscope, it is necessary to insert the insertion part of the endoscope into the patient's body, and then extend the medical device from the operating part of the endoscope into the instrument tube. The medical device is inserted into the human body through the instrument tube to achieve the treatment effect.

[0003] However, the operation part in the prior art has a part of the instrument tube built in, and the instrument tube is inserted through the through hole of the operation part so that the instrument tube can be connected to a multi-way connector, a mechanical connector or a suction valve, etc. According to the structure and holding method of a conventional endoscope, the connector axial direction of the multi-way connector is different from the axial direction of the through hole suitable for inserting the instrument tube, so the instrument tube is arranged in a bent state inside the operation part.

[0004] When subjected to external impact or long-term fatigue deformation, the curved instrument tube is prone to bending, collapse, etc., causing the endoscope to fail to work properly and greatly increasing the risk of surgery. Summary of the invention

[0005] In view of the shortcomings of the related technologies mentioned above, the present application provides a lifting structure, an operating handle and an endoscope to solve the above technical problems.

[0006] The present application provides a lifting structure, which is suitable for being installed on an operating handle of an endoscope, wherein the operating handle has an instrument tube, and the lifting structure has an introduction side and an exit side which are far away from each other, wherein the introduction side is used for introducing the instrument tube, and the exit side is used for exiting the instrument tube, and the lifting structure has a lifting portion, wherein the lifting portion is used for lifting the height of at least a portion of the instrument tube.

[0007] In one embodiment of the present application, the lifting structure includes a limiting portion, which is used to constrain at least a portion of the instrument tube in the operating handle so that the instrument tube is bent along a bending direction, and the bending direction and the lifting direction applied to the instrument tube by the lifting portion are perpendicular to each other.

[0008] In one embodiment of the present application, the limiting portion is a constraint groove, which connects the introduction side and the outlet side. The constraint groove is used to install and constrain at least a portion of the instrument tube in the operating handle so that the constraint groove is bent along the bending direction. The lifting portion is at least a portion of the bottom of the constraint groove, and the height of at least a portion of the bottom of the constraint groove gradually increases to lift the height of at least a portion of the instrument tube.

[0009] In one embodiment of the present application, in the direction from the lead-in side to the lead-out side, the bending angle of the constraining groove is 40°-70°.

[0010] In one embodiment of the present application, the angle between the extension direction of the lifting portion and the horizontal plane is 4°-10°.

[0011] In one embodiment of the present application, the tangent direction of the restraining groove at the lead-out side intersects or is parallel to the axial direction of the through hole of the operating handle suitable for inserting the instrument tube.

[0012] In one embodiment of the present application, the constraint groove includes a connecting section and a constraint section that are interconnected, the lifting portion is arranged in the constraint section, a step is arranged between the connecting section and the constraint section, the connecting section is located on the side of the constraint section close to the introduction side, and the connecting section is used to install a multi-way joint of the operating handle.

[0013] In one embodiment of the present application, an extension structure is provided at one end of the lifting structure close to the lead-out side. The cross-sectional area of ​​the extension structure is smaller than that of the lifting structure. The extension structure is located in the extension path of the instrument tube and is used to support or constrain the instrument tube.

[0014] In one embodiment of the present application, the lifting structure includes a first surface and a second surface opposite to each other, the lifting portion is arranged on the first surface, and the second surface is protruding with a fixing portion, the fixing portion and the lifting portion are distributed vertically, and the fixing portion is used to be installed on the operating handle so that the lifting structure is fixed in the operating handle.

[0015] To achieve the above-mentioned purpose and other related purposes, the present application provides an operating handle, which includes the aforementioned lifting structure, a shell and a multi-way joint. The multi-way joint and the lifting structure are installed in the shell. The shell is provided with a through hole suitable for inserting the instrument tube. The lifting structure is located between the through hole and the multi-way joint, and the lifting structure lifts the instrument tube.

[0016] In one embodiment of the present application, the height of the highest point of the lifting portion is higher than the height of the axis of the through hole.

[0017] In one embodiment of the present application, the lifting structure and the shell are integrated.

[0018] In one embodiment of the present application, the shell is also provided with a first installation groove suitable for installing a traction rope and / or a second installation groove suitable for installing a wiring harness. When the lifting structure is installed on the shell, the lifting structure closes at least a portion of the first installation groove and / or at least a portion of the second installation groove.

[0019] In one embodiment of the present application, the shell includes a first shell and a second shell, the first shell and the second shell are detachably connected to form a accommodating cavity, the lifting structure and the multi-way connector are arranged in the accommodating cavity, the lifting structure is installed on the first shell, and when the second shell is connected to the first shell, the second shell abuts against the lifting structure and makes the instrument tube abut against the lifting part.

[0020] To achieve the above-mentioned purpose and other related purposes, the present application provides an endoscope, which includes the aforementioned operating handle.

[0021] The technical solution adopted by the present invention can achieve the following beneficial effects: the lifting structure can be arranged in the operating handle, and the lifting structure has a lifting part, and the lifting part can increase the height of the instrument tube, that is, it provides support and lifting effect for the instrument tube. The lifting part can prevent the instrument tube from bending and wrinkling, thereby eliminating the risk of bending of the instrument tube and improving the reliability and passability of the instrument tube. The instrument tube of the prior art may have displacement in the vertical direction, but under the lifting effect of the lifting structure, the instrument tube has redundancy, and the redundantly arranged instrument tube can buffer the negative impact caused by displacement or pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is a structural schematic diagram of a lifting structure shown in an exemplary embodiment of the present application; Figure 2 is a schematic structural diagram of an endoscope shown in an exemplary embodiment of the present application; Figure 3 is a structural schematic diagram of an operating handle shown in an exemplary embodiment of the present application; Figure 4 yes Figure 3 The enlarged view of point a in the figure; Figure 5 is a schematic structural diagram of another operating handle shown in an exemplary embodiment of the present application; Figure 6 yes Figure 5 The enlarged view of point b in the figure; Figure 7 is a structural schematic diagram of a lifting structure at another viewing angle shown in an exemplary embodiment of the present application; Figure 8 is a schematic structural diagram of an instrument tube shown in an exemplary embodiment of the present application; Fig. 9 is a structural schematic diagram of another lifting structure shown in an exemplary embodiment of the present application; Fig.10 is a structural schematic diagram of a lifting structure at another viewing angle shown in an exemplary embodiment of the present application; Fig.11is a structural schematic diagram of another lifting structure shown in an exemplary embodiment of the present application; Fig.12 is a schematic structural diagram of another instrument tube shown in an exemplary embodiment of the present application; Fig.13 is a structural schematic diagram of another lifting structure shown in an exemplary embodiment of the present application; Fig.14 It is an exploded view of an operating handle shown in an exemplary embodiment of the present application.

[0024] In the figure: 1. operating handle; 100. lifting structure; 110. introduction side; 120. lead-out side; 130. limiting part; 140. connecting section; 141. step; 150. restraining section; 160. extension structure; 170. first surface; 180. second surface; 200. shell; 210. through hole; 220. multi-way connector; 230. first mounting groove; 231. traction rope; 240. second mounting groove; 241. wiring harness; 250. first shell; 260. second shell; 270. instrument connector; 280. negative pressure suction valve; 290. accommodating chamber; 300. instrument tube; 400. fixing part; 500. lifting part; 2. insertion part; 3. endoscope. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0027] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0028] According to the structure and holding method of a conventional endoscope, the joint axial direction of the multi-way joint is different from the axial direction of the through hole suitable for inserting the instrument tube. Therefore, the instrument tube is arranged in a bent state inside the operating part.

[0029] Under the impact of external forces or long-term fatigue deformation, the curved instrument tube is prone to bending, collapse, etc. During the bending process, wrinkles will appear on the upper and lower sides of the instrument tube, causing the channel inside the instrument tube to collapse and fail, causing the endoscope to fail to work properly, greatly increasing the risk of surgery.

[0030] The present application provides a lifting structure 100, see Figure 1 as well as Figure 2 The lifting structure 100 is suitable for being installed on the operating handle 1 of the endoscope 3 .

[0031] See also Figure 3 as well as Figure 4 The operating handle 1 is connected to the proximal end of the insertion portion 2 of the endoscope 3. The following content is referred to as the operating handle 1. Figure 4 The operating handle 1 may include a lifting structure 100, a shell 200 and a multi-way connector 220. The lifting structure 100 and the multi-way connector 220 are disposed in the shell 200, and the lifting structure 100 and the multi-way connector 220 are disposed opposite to each other.

[0032] See also Figure 2 as well as Figure 3 The shell 200 can be made of metal or plastic, etc., and this embodiment does not limit it. The shell 200 has a accommodating cavity 290, and the lifting structure 100 and the multi-way connector 220 are installed in the accommodating cavity 290. Furthermore, the shell 200 can also have a mounting structure, and the mounting structure is arranged on the cavity wall forming the accommodating cavity 290, and the lifting structure 100 and / or the multi-way connector 220 can be detachably mounted on the mounting structure. The shell 200 is ergonomic and convenient for users to hold. The shell 200 has a protective effect, which can prevent external forces from damaging the lifting structure 100 and the multi-way connector 220, thereby improving the safety of the use of the shell 200.

[0033] In some other cases, the lifting structure 100 is integrated with the housing 200. Further, the lifting structure 100 and the housing 200 are integrally formed, and the molding method can be injection molding or machining, etc. This setting can improve the tightness of the connection between the lifting structure 100 and the housing 200, thereby improving the structural stability of the operating handle 1.

[0034] See also Figure 3The multi-way connector 220 may be a three-way connector or a four-way connector, etc., which is not limited in this embodiment. The multi-way connector 220 is detachably disposed in the housing 200 of the operating handle 1, which reduces the manufacturing difficulty of the operating handle 1 and improves the production efficiency of the operating handle 1.

[0035] In some other cases, the multi-way connector 220 can be interconnected with the shell 200, and the connection method between the multi-way connector 220 and the shell 200 can be bonding or welding, etc., to improve the connection tightness between the multi-way connector 220 and the shell 200.

[0036] In one embodiment, please refer to Figure 3 The housing 200 is provided with a through hole 210, and the shapes and sizes of the through hole 210 and the instrument tube 300 match each other, and the through hole 210 is suitable for inserting the instrument tube 300. For example, one end of the instrument tube 300 extends to the insertion portion 2 of the endoscope 3, and the other end is inserted into the through hole 210 and communicated with the multi-way connector 220. The operating handle 1 can also be provided with an instrument connector 270 and a negative pressure suction valve 280, and the instrument connector 270 and the negative pressure suction valve 280 are connected to the multi-way connector 220. Through the provision of the multi-way connector 220, the instrument tube 300 can be connected to the instrument connector 270 and the negative pressure suction valve 280, so that the treatment instrument can be inserted into the instrument tube 300 through the instrument connector 270, and the negative pressure suction valve 280 can suck the material in the instrument tube 300. Among them, the treatment instrument includes but is not limited to biopsy forceps, laser devices, etc.

[0037] For further information, please also refer to Figure 5 as well as Figure 6 , the lifting structure 100 can be spaced apart from the through hole 210. A traction rope 231 and a harness 241 can also extend from the through hole 210. The traction rope 231 is used to control the rotation direction of the insertion part 2, and the harness 241 is used to transmit the acquisition signal of the camera module of the insertion part 2. The spacing setting can prevent the lifting structure 100 from interfering with the traction rope 231 and the harness 241, so that the traction rope 231 and the harness 241 can extend out of the through hole 210, thereby improving the reliability of the operation handle 1.

[0038] In this example, please refer to Figure 1 as well as Figure 3, the lifting structure 100 is located between the through hole 210 and the multi-way connector 220, and the lifting structure 100 can lift the instrument tube 300. Specifically, the lifting structure 100 has an introduction side 110 and an extraction side 120 that are away from each other. The introduction side 110 is used to introduce the instrument tube 300, for example, the multi-way connector 220 is arranged on the introduction side 110, so as to introduce the instrument tube 300 from the multi-way connector 220 into the lifting structure 100. The extraction side 120 is used to extract the instrument tube 300, for example, the through hole 210 is arranged on the extraction side 120, so as to extract the instrument tube 300 from the lifting structure 100 to the through hole 210. The instrument tube 300 can extend from the introduction side 110 to the extraction side 120, and extend out of the housing 200 from the through hole 210.

[0039] See also Figure 7 , the lifting structure 100 has a lifting portion 500. The lifting portion 500 may be a bump, a groove, a lifting rod, etc. The height of the lifting portion 500 may gradually increase from the introduction side 110 to the lead-out side 120. Alternatively, the height of the lifting portion 500 may first increase and then decrease, and the specific structure and size of the lifting portion 500 are not limited in this embodiment.

[0040] In the existing endoscope 3, the axial direction of the multi-way connector 220 is different from the axial direction of the through hole 210 suitable for inserting the instrument tube 300, which causes the instrument tube 300 to be configured in a bent state inside the operating portion. The channel inside the instrument tube 300 is also configured in a bent state. During the rotation of the insertion portion 2 or the insertion of the instrument tube 300, the instrument tube 300 may move, and stress is concentrated inside the instrument tube 300, causing the instrument tube 300 to bend and the channel inside the instrument tube 300 to collapse. During the bending process, the outer side of the instrument tube 300 gradually bulges, the inner side of the instrument tube 300 gradually sinks, and the upper and lower sides of the instrument tube 300 gradually wrinkle. Then, the instrument tube 300 bends, and the channel inside the instrument tube 300 collapses and fails, causing the endoscope 3 to fail to work normally, greatly increasing the risk of surgery. In this embodiment, the lifting portion 500 is used to lift the height of at least part of the instrument tube 300 in the operating handle 1. As Figure 8 As shown, Figure 8The schematic diagram of the structure of the instrument tube 300 after being lifted by the lifting part 500 is shown. The lifting part 500 lifts the instrument tube 300, and the lifting direction of the lifting part 500 is perpendicular to the bending direction of the instrument tube 300. For example, the instrument tube 300 is bent in the horizontal plane, and the lifting direction of the lifting part 500 is the vertical direction. Under the action of the lifting part 500, the instrument tube 300 is deformed, and the instrument tube 300 applies an elastic force to the lifting part 500, and the lifting part 500 applies a supporting force to the instrument tube 300. The elastic force and the supporting force are always the same in magnitude and opposite in direction. In the case of dislocation or offset of the instrument tube 300, other forces appear on the instrument tube 300, and the other forces have a tendency to drive the instrument tube 300 to bend and wrinkle. However, the elastic force and the supporting force can eliminate the effect of the action force. For example, the action force and the elastic force are in the same or substantially the same direction, and the magnitude of the supporting force increases accordingly to counteract the combined effect of the action force and the elastic force, thereby eliminating the bending and wrinkling tendency of the instrument tube 300. Furthermore, the lifting portion 500 can prevent the instrument tube 300 from bending and wrinkling, thereby eliminating the bending risk of the instrument tube 300 and improving the reliability and passability of the instrument tube 300.

[0041] The detailed analysis is as follows, please refer to Figure 8 The lifting portion 500 abuts against and lifts the instrument tube 300, and the lower side wall of the instrument tube 300 is supported by an upward supporting force (such as Figure 8 As shown in F1 in FIG. 1 ), the axis of the instrument tube 300 (as shown in FIG. Figure 8 Under the lifting action of the lifting structure 100, the upper side wall of the instrument tube 300 is stretched and deformed, and the upper side wall of the instrument tube 300 has a downward elastic force (as shown in FIG. Figure 8 The lifting part 500 can squeeze the upper and lower side walls of the instrument tube 300 toward the axis direction thereof, thereby preventing wrinkles from appearing on the upper and lower sides of the instrument tube 300, thereby preventing the instrument tube 300 from bending and wrinkling.

[0042] Under the action of the lifting structure 100, the instrument tube 300 will have an axial displacement. The displacement can be a relative movement of the instrument tube 300 in the axial direction. Specifically, the instrument tube 300 is arranged in a curved manner. When inserting the treatment instrument, the treatment instrument is inserted into the curved part of the instrument tube 300, and the treatment instrument will continue to be inserted along the tangential direction of the instrument tube 300 to abut against the tube wall of the instrument tube 300. As the instrument is continuously inserted, the instrument tube 300 will have an axial displacement. The lifting part 500 of this embodiment can lift the instrument tube 300, and the instrument tube 300 generates an elastic force to restore the deformation. The relative displacement caused by the displacement of the instrument tube 300 can provide a certain space for the instrument tube 300 to restore the deformation. Under the elastic force of the instrument tube 300, the instrument tube 300 eliminates the displacement and continues to abut on the lifting part 500. The instrument tube 300 is axially supported and limited by the lifting structure 100, thereby preventing the displacement problem.

[0043] In the prior art, the instrument tube 300 and the multi-way connector 220 are connected to each other, but due to problems such as different materials, the connection between the instrument tube 300 and the multi-way connector 220 is unstable and easily falls off. Figure 8 As shown, due to the lifting effect of the lifting structure 100, the upper side wall or the lower side wall of the instrument tube 300 has elastic force or supporting force toward both ends. There is a pre-tightening force at the connection between the instrument tube 300 and the multi-way connector 220, and then between the instrument tube 300 and the multi-way connector 220. The pre-tightening force is toward the direction close to the multi-way connector 220, so that the instrument tube 300 and the multi-way connector 220 are closely connected to prevent them from falling off. In addition, the redundant setting can also eliminate the dislocation of the instrument tube 300, avoid the force generated by the dislocation of the instrument tube 300 from being transmitted to the connection between the instrument tube 300 and the multi-way connector 220, and improve the connection effect of the instrument tube 300 and the multi-way connector 220.

[0044] The instrument tube 300 is arranged in a bent state inside the operating part. However, when the treatment instrument is quickly inserted into the instrument tube 300, the treatment instrument may force the bent instrument tube 300 to further deform, and then the bending and collapse may occur. Fig. 9 The lifting structure 100 of this embodiment may include a limiting portion 130, which is used to constrain at least part of the instrument tube 300 in the operating handle 1 so that the instrument tube 300 is bent along the bending direction. When the instrument tube 300 is distributed along the bending direction, the angle change of the instrument tube 300 tends to be smooth, so that the treatment instrument can be easily inserted into the instrument tube 300. The limiting portion 130 can constrain the instrument tube 300 to be bent in the bending direction. The limiting portion 130 can provide support for the instrument tube 300 to prevent the instrument tube 300 from deformation and collapse, thereby improving the safety of the instrument tube 300.

[0045] Please also refer to Fig.10 as well as Fig.11 , the bending direction and the lifting direction of the lifting portion 500 applied to the instrument tube 300 (such as Fig.11 For example, the limiting portion 130 can constrain the instrument tube 300 to bend in the horizontal direction, and the lifting portion 500 can lift the instrument tube 300 in the vertical direction. Fig.12 As shown, the limiting portion 130 can make the extension direction of the instrument tube 300 in the horizontal direction be arc-shaped. Figure 8 As shown, the lifting portion 500 can make the instrument tube 300 extend in an arc shape in the vertical direction. The limiting portion 130 and the lifting portion 500 act on the instrument tube 300 in different directions, further reducing the risk of bending and wrinkling of the instrument tube 300, and helping to maintain the shape and position of the instrument tube 300.

[0046] The detailed analysis is as follows, please refer to Fig.12 , the limiter 130 constrains the instrument tube 300 to be bent. Exemplarily, in the horizontal plane, the instrument tube 300 is bent, and the inner side wall of the bending of the instrument tube 300 is subjected to an outward extrusion force (such as Fig.12 As shown in F3 in FIG. 1 ), the axis of the instrument tube 300 (as shown in FIG. Fig.12 The two opposite ends of the instrument tube 300 are fixed, and under the restraining effect of the limiting portion 130, the outer wall of the instrument tube 300 is subjected to a tensile force toward the inside (as shown in FIG. Fig.12 As shown in F4 in the figure, the curved outer side wall of the instrument tube 300 is stretched and deformed, and the axis of the instrument tube 300 is located in the direction of the tensile force. Under the action of the limiting portion 130, the lifting portion 500 can squeeze the outer side wall and the inner side wall of the instrument tube 300 toward the direction of its own axis, which effectively prevents the instrument tube 300 from bending and wrinkling. Under the joint action of the limiting portion 130 and the lifting portion 500, the surroundings of the instrument tube 300 are subjected to a force toward the direction of its own axis, which effectively prevents the instrument tube 300 from bending and wrinkling, thereby improving the safety of the instrument tube 300.

[0047] In a specific implementation, please refer to Fig.10 as well as Fig.11, the limiting portion 130 may be a constraint groove. The constraint groove connects the introduction side 110 and the lead-out side 120, and the constraint groove may provide a smooth and restricted passage for the instrument tube 300. Further, the limiting portion 130 may be a groove wall of the constraint groove. The constraint groove is used to install and constrain at least part of the instrument tube 300 in the operating handle 1, so that the constraint groove is bent along the bending direction. The constraint groove may provide more accurate and reliable constraint and positioning for the instrument tube 300. The constraint groove may have an opening, and the instrument tube 300 may be quickly installed in the constraint groove from the opening, which is convenient for the assembler to perform the assembly operation. The groove wall forming the constraint groove can effectively constrain the instrument tube 300. The constraint setting is not limited to the limitation of the bending direction of the instrument tube 300, but also includes its radial and axial limitations, such as the constraint groove increases the contact area between the lifting structure 100 and the instrument tube 300, so that the constraint groove hinders the instrument tube 300 from sliding along the axial direction, thereby ensuring the stability and reliability of the instrument tube 300 during operation.

[0048] See also Fig.11 , the lifting portion 500 can be at least part of the bottom of the constraint groove, and the height of at least part of the bottom of the constraint groove gradually increases to lift at least part of the height of the instrument tube 300. This arrangement can enable the instrument tube 300 to be gradually lifted when passing through the constraint groove. This arrangement can enable the instrument tube 300 to be constrained by the groove wall of the constraint groove, and the instrument tube 300 to be lifted by the groove bottom of the constraint groove. The constraint groove can be limited in two different directions, which not only helps to maintain the shape and position of the instrument tube 300, but also can reduce friction and wear during operation to a certain extent, and extend the service life of the instrument tube 300.

[0049] In another embodiment, please refer to Figure 4 , the tangent direction of the constraint groove at the lead-out side 120 (such as Figure 4 ) and the axial direction of the through hole 210 (as shown in L3 in FIG. Figure 4 In other words, the tangent direction of the constraint groove at the lead-out side 120 is not colinear with the axial direction of the through hole 210. This arrangement can make the instrument tube 300 between the lifting structure 100 and the through hole 210 bendable, and the part of the instrument tube 300 between the lifting structure 100 and the through hole 210 is redundant, and the redundantly arranged instrument tube 300 can buffer the negative effects caused by displacement or pulling.

[0050] In this example, see Fig.13 In the direction from the lead-in side 110 to the lead-out side 120, the bending angle of the constraint groove can be 40°-70°, such as 40°, 50° or 70°, etc., which is not limited in this embodiment. The bending angle can be the axial direction of the constraint groove at the lead-out side 120 (such as Fig.13L5 in FIG. 1 ) and the axial direction of the constraint groove at the introduction side 110 (as shown in FIG. Fig.13 The bending angle of the constraint groove should not be set too large or too small. If the bending angle is set too large, the instrument tube 300 may be bent excessively, and the treatment instrument may be difficult to insert into the instrument tube 300. If the bending angle is set too small, the constraint groove may be difficult to adapt to the angle between the multi-way connector 220 and the through hole 210, so that the instrument tube 300 is difficult to install in the handle. This setting can configure a suitable bending angle for the constraint groove, which can not only improve the passability of the instrument tube 300, but also adapt to the multi-way connector 220 and the through hole 210 of the operating handle 1, which is convenient for assembly and improves the assembly efficiency of the endoscope 3.

[0051] In another embodiment, please refer to Fig.11 The included angle β between the extension direction of the lifting portion 500 and the horizontal plane can be 4°-10°, such as 4°, 8° or 10°, etc., which is not limited in this embodiment. The horizontal plane can be the lifting direction of the lifting portion 500 (such as Fig.11 The angle β should not be set too large or too small. If the angle is set too small, the lifting effect of the lifting part 500 on the instrument tube 300 is limited, and there is still a risk of bending the instrument tube 300. If the angle β is set too large, the lifting part 500 lifts the instrument tube 300 excessively, affecting the passability of the instrument tube 300. This setting can make the extension direction of the lifting part 500 have an angle of appropriate size with the horizontal plane. The appropriate angle can balance the passability of the instrument tube 300 and the risk of bending, so as to improve the safety of the instrument tube 300.

[0052] In this embodiment, please refer to Figure 3 as well as Fig.10 , the constraint groove may include a connecting section 140 and a constraint section 150, and the connecting section 140 and the constraint section 150 are interconnected. The connecting section 140 is used to install the multi-way connector 220 of the endoscope 3. The connecting section 140 can be connected to the multi-way connector 220. For example, one connector of the multi-way connector 220 can be installed in the connecting section 140, and the inner wall of the connecting section 140 and the outer wall of the multi-way connector 220 are in contact with each other to achieve the connection between the multi-way connector 220 and the lifting structure 100. This setting can limit the relative position of the multi-way connector 220 and the instrument tube 300, avoid relative movement between the multi-way connector 220 and the instrument tube 300, and eliminate the risk of bending of the instrument tube 300.

[0053] The lifting portion 500 is disposed in the restraining section 150, and the restraining section 150 can lift the instrument tube 300 to prevent the instrument tube 300 from deformation and collapse, thereby improving the safety of the instrument tube 300. A step 141 is disposed between the connecting section 140 and the restraining section 150, and the connecting section 140 is located on a side of the restraining section 150 close to the introduction side 110. When the multi-way connector 220 and the connecting section 140 are connected to each other, the step 141 can abut the multi-way connector 220. This abutment not only provides stable support, but also prevents relative sliding between the multi-way connector 220 and the lifting structure 100.

[0054] Preferably, one end of the restraining section 150 close to the step 141 is chamfered. The chamfered restraining section 150 can play a guiding role so that the instrument tube 300 can be installed in the restraining section 150 more easily.

[0055] It is understandable that the limiting portion 130 may also be provided on the restraining section 150 , and the limiting portion 130 can limit the instrument tube 300 installed on the restraining section 150 , which will not be elaborated in detail herein.

[0056] In one embodiment, please refer to Figure 7 , an extension structure 160 is provided at one end of the lifting structure 100 close to the lead-out side 120. For example, the extension structure 160 may be a convex block, which extends out of the lifting structure 100. The extension structure 160 is located in the extension path of the instrument tube 300, and the extension structure 160 is used to support or constrain the instrument tube 300. For example, the constraint groove may extend to the surface of the extension structure 160, and the extension structure 160 may provide continuous support or constraint for the instrument tube 300, ensuring that the instrument tube 300 can move smoothly along a predetermined path without deviation or shaking. The cross-sectional area of ​​the extension structure 160 is smaller than that of the lifting structure 100, and the extension structure 160 with a smaller cross-sectional area is lighter and can be set in a wider range of scenarios. This setting can effectively avoid the possible existence of the wire harness 241, the traction rope 231, etc. in the limited space of the housing 200. In a complex operating environment, this setting increases the flexibility and convenience of the design.

[0057] It is understandable that at least a portion of the limiting portion 130 and / or the lifting portion 500 can be arranged in the extension structure 160 to further increase the effective lifting range of the limiting portion 130 and / or the lifting portion 500 and improve the use effect of the positioning structure, which will not be elaborated here.

[0058] In this example, see Figure 7, the lifting structure 100 may include a first surface 170 and a second surface 180 facing each other. The lifting portion 500 is arranged on the first surface 170, and the second surface 180 is convexly provided with a fixing portion 400. The fixing portion 400 is used to be installed on the operating handle 1 so that the lifting structure 100 is fixed in the operating handle 1. The fixing portion 400 can fix the lifting structure 100 and the shell 200 to each other, prevent the lifting structure 100 from being separated from the shell 200, and improve the safety of the use of the operating handle 1. Exemplarily, the fixing portion 400 may include a first fixing block and a second fixing block, and the shell 200 has a mounting structure. The first fixing block and the second fixing block cooperate with each other and clamp the mounting block so that the fixing portion 400 can be stably mounted on the shell 200. In some other cases, the limiting portion 130 may also be arranged on the first surface 170, which will not be described in detail here.

[0059] The fixing part 400 and the lifting part 500 are distributed vertically, that is, the fixing part 400 and the lifting part 500 form a vertical distribution relationship in space. This arrangement can separate the fixing part 400 and the lifting part 500 from each other to avoid mutual interference. In addition, the fixing part 400 can also improve the structural stability of the lifting part 500. Exemplarily, the lifting part 500 can be a constraint groove. The constraint groove is recessed, the fixing part 400 is convex, and the constraint groove and the fixing part 400 are located in the same vertical direction. The fixing part 400 can increase the cross-sectional area of ​​the lifting structure 100 and eliminate the influence of the constraint groove on the structural strength of the lifting structure 100.

[0060] When the axis of the through hole 210 is higher than the lifting portion 500, an unnecessary gap may be generated between the instrument tube 300 and the lifting portion 500 between the through hole 210 and the multi-way connector 220. This gap may cause the lifting effect of the lifting portion 500 to fail, increasing the possibility of bending and wrinkling of the instrument tube 300. Figure 7 , the height of the highest point of the lifting portion 500 of this embodiment is higher than the height of the axis of the through hole 210. This arrangement can ensure that the highest point of the lifting portion 500 exceeds the axis of the through hole 210, and even if the position of the through hole 210 or the multi-way connector 220 is offset, the lifting portion 500 can always maintain close contact with the instrument tube 300. This arrangement allows the lifting portion 500 to apply a continuous and stable force to the instrument tube 300, effectively eliminating the gap problem caused by position changes, and improving the safety of the instrument tube 300.

[0061] In this example, please refer to Figure 6The housing 200 is also provided with a first mounting groove 230 and / or a second mounting groove 240. The first mounting groove 230 is suitable for installing a traction rope 231, and the second mounting groove 240 is suitable for installing a wiring harness 241. When the lifting structure 100 is installed on the housing 200, the lifting structure 100 closes at least a portion of the first mounting groove 230 and / or at least a portion of the second mounting groove 240. The lifting structure 100 can close or semi-close the first mounting groove 230 and the second mounting groove 240. This arrangement can ensure the relative independence of components such as the wiring harness 241, the traction rope 231 and the instrument tube 300 in the housing 200. Each component in the operating handle 1 is effectively isolated to avoid mutual interference and entanglement, thereby improving the operating efficiency and reliability of the overall system.

[0062] In this example, see Fig.14 The housing 200 may include a first housing 250 and a second housing 260, the first housing 250 and the second housing 260 are detachably connected to form a receiving chamber 290, and the lifting structure 100 and the multi-way joint 220 are arranged in the receiving chamber 290. Exemplarily, during the assembly process, the installer may first separate the first housing 250 and the second housing 260, and the lifting structure 100 and the multi-way joint 220 may be more accurately installed in the first housing 250, and the first housing 250 and the second housing 260 may be detachably installed to form a relatively closed receiving chamber 290. The detachable setting may improve the assembly efficiency of the operating handle 1 and may also reduce the cost of later replacement.

[0063] The lifting structure 100 can be installed on the first shell 250. When the second shell 260 is connected to the first shell 250, the second shell 260 abuts against the lifting structure 100, and the instrument tube 300 abuts against the lifting portion 500. The second shell 260 abuts against the lifting structure 100, which can fix the lifting structure 100 in the shell 200, thereby improving the stability and reliability of the lifting structure 100. Furthermore, when the second shell 260 abuts against the lifting structure 100, the lifting portion 500 abuts against the instrument tube 300, and the lifting portion 500 can continuously lift the instrument tube 300 to prevent the instrument tube 300 from bending, wrinkling, etc. This means that no matter how the instrument tube 300 moves or is stressed during use, it can maintain a lifted state, significantly improving the use effect of the lifting structure 100. In addition, the second shell 260 can abut against the limiting portion 130, which can also limit the direct contact between the instrument tube 300 and the lifting structure 100. For example, the lifting structure 100 may include a restraining groove, and the instrument tube 300 is disposed in the restraining groove. When the second shell 260 abuts against the lifting structure 100, the second shell 260 closes or semi-closes the restraining groove, so that at least a portion of the instrument tube 300 is always in the restraining groove.

[0064] In some other cases, the second shell 260 may also be provided with a recessed portion, which is provided corresponding to the lifting portion 500. The first shell 250 and the second shell 260 are detachably installed, and the recessed portion and the lifting portion 500 cooperate with each other so that the instrument tube 300 and the lifting portion 500 are closely fitted, further improving the use effect of the lifting structure 100.

[0065] In order to achieve the above-mentioned purpose and other related purposes, the present application provides an operating handle 1, please refer to Figure 2 The operating handle 1 may include the aforementioned lifting structure 100. In this way, the operating handle 1 has the beneficial effects of any of the aforementioned solutions, which will not be described in detail here.

[0066] To achieve the above-mentioned and other related purposes, the present application provides an endoscope 3, please refer to Figure 2 , the endoscope 3 may include the aforementioned operating handle 1. In this way, the endoscope 3 has the beneficial effects of any of the aforementioned solutions, which will not be repeated here. The endoscope 3 may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal mirror, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc., and the embodiment of the present application does not specifically limit the type of the endoscope 3.

[0067] The technical solution adopted by the present invention can achieve the following beneficial effects: the lifting structure 100 can be installed in the operating handle 1, and the lifting structure 100 has a lifting portion 500, which can increase the height of the instrument tube 300, that is, it provides support and lifting for the instrument tube 300. The lifting portion 500 can prevent the instrument tube 300 from bending and wrinkling, thereby eliminating the bending risk of the instrument tube 300 and improving the reliability and passability of the instrument tube 300. Under the action of the lifting structure 100, the instrument tube 300 will have a vertical displacement, and while the instrument tube 300 is lifted, the instrument tube 300 will also have redundancy, and the redundantly arranged instrument tube 300 can buffer the negative impact caused by displacement or pulling.

[0068] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0069] In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0070] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lifting structure, the lifting structure is suitable for being installed on an operating handle of an endoscope, the operating handle has an instrument tube inside, characterized in that: The lifting structure has an introduction side and an exit side which are far away from each other, the introduction side is used to introduce the instrument tube, the exit side is used to exit the instrument tube, and the lifting structure has a lifting portion, the lifting portion is used to lift the height of at least part of the instrument tube.

2. The lifting structure according to claim 1, characterized in that: The lifting structure includes a limiting portion, which is used to constrain at least part of the instrument tube in the operating handle so that the instrument tube is bent along a bending direction, and the bending direction and the lifting direction applied to the instrument tube by the lifting portion are perpendicular to each other.

3. The lifting structure according to claim 2, characterized in that: The limiting portion is a constraint groove, which connects the introduction side and the outlet side. The constraint groove is used to install and constrain at least part of the instrument tube in the operating handle so that the constraint groove is bent along the bending direction. The lifting portion is at least part of the bottom of the constraint groove, and the height of at least part of the bottom of the constraint groove gradually increases to lift the height of at least part of the instrument tube.

4. The lifting structure according to claim 3, characterized in that: In the direction from the introduction side to the lead-out side, the bending angle of the constraint groove is 40°-70°; And / or, the angle between the extension direction of the lifting portion and the horizontal plane is 4°-10°; And / or, a tangential direction of the restraining groove at the lead-out side intersects or is parallel to an axial direction of the through hole of the operating handle that is suitable for inserting an instrument tube.

5. The lifting structure according to claim 3, characterized in that: The constraint groove includes a connecting section and a constraint section that are interconnected, the lifting portion is arranged in the constraint section, a step is arranged between the connecting section and the constraint section, the connecting section is located on the side of the constraint section close to the introduction side, and the connecting section is used to install the multi-way joint of the operating handle.

6. The lifting structure according to any one of claims 1 to 5, characterized in that: An extension structure is provided at one end of the lifting structure close to the lead-out side, the cross-sectional area of ​​the extension structure is smaller than that of the lifting structure, the extension structure is located in the extension path of the instrument tube, and is used to support or constrain the instrument tube; And / or, the lifting structure includes a first surface and a second surface opposite to each other, the lifting portion is arranged on the first surface, the second surface is protrudingly provided with a fixing portion, the fixing portion and the lifting portion are distributed vertically, and the fixing portion is used to be installed on the operating handle so that the lifting structure is fixed in the operating handle.

7. An operating handle, characterized in that: The operating handle includes a lifting structure, a shell and a multi-way connector as described in any one of claims 1 to 6, the multi-way connector and the lifting structure are installed in the shell, the shell is provided with a through hole suitable for inserting an instrument tube, the lifting structure is located between the through hole and the multi-way connector, and the lifting structure lifts the instrument tube.

8. The operating handle according to claim 7, characterized in that: The height of the highest point of the lifting portion is higher than the height of the axis of the through hole; And / or, the lifting structure is integrated with the shell.

9. The operating handle according to claim 7, characterized in that: The housing is further provided with a first mounting groove for mounting a traction rope and / or a second mounting groove for mounting a wiring harness, and when the lifting structure is mounted on the housing, the lifting structure closes at least a portion of the first mounting groove and / or at least a portion of the second mounting groove; And / or, the shell includes a first shell and a second shell, the first shell and the second shell are detachably connected to form a accommodating cavity, the lifting structure and the multi-way connector are arranged in the accommodating cavity, the lifting structure is installed on the first shell, and when the second shell is connected to the first shell, the second shell abuts against the lifting structure and makes the instrument tube abut against the lifting part.

10. An endoscope, characterized in that: The endoscope comprises an operating handle as described in any one of claims 7-9.

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