Connecting device, tubular part and conveying system

Abstract

The invention provides a connecting device, a tubular part and a conveying system. The connecting device comprises a shell, a movable mechanism and a reset mechanism. The movable mechanism can be movably connected with the shell, and at least one of the shell and the movable mechanism is configured to be connected with a reinforcing wire of the tubular part; the movable mechanism and the shell are both connected with the reset mechanism. The movable mechanism can be driven by the reinforcing wire to move relative to the shell in the first direction and can be driven by the reset mechanism to move relative to the shell in the second direction, and the first direction is opposite to the second direction. According to the connecting device, the tubular part and the conveying system, the tubular part can have good bending performance.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a connecting device, a tubular member and a conveying system. Background Art

[0002] Most of the current interventional device delivery systems, especially valve device delivery systems, require relevant medical devices, such as prosthetic valves or vascular stents, to be loaded into the delivery device before surgery. Since the pipelines in the human body are tortuous, the tubular parts of the delivery device need to have good bending performance so that the distal end of the delivery device can reach the predetermined position in the human body for interventional surgery. However, the structural design of the tubular parts in the related art is unreasonable, and the bending performance is insufficient, which limits the application of tubular parts in interventional surgery. Summary of the invention

[0003] The invention provides a connecting device, a tubular component and a conveying system, aiming to make the tubular component have good bending performance.

[0004] An embodiment of the present invention provides a connection device, including:

[0005] case;

[0006] A movable mechanism, capable of being movably connected to the shell, wherein at least one of the shell and the movable mechanism is configured to be connected to the reinforcing wire of the tubular member;

[0007] A reset mechanism, the movable mechanism and the housing are both connected to the reset mechanism;

[0008] Wherein, the movable mechanism can move relative to the shell along a first direction driven by the reinforcing wire, and can move relative to the shell along a second direction driven by the resetting mechanism, and the first direction is opposite to the second direction.

[0009] An embodiment of the present invention further provides a tubular member, comprising:

[0010] tubular body;

[0011] A reinforcing wire passing through the tubular body; and

[0012] As for the connecting device as described above, the proximal end of the reinforcing wire is connected to the connecting device.

[0013] The embodiment of the present invention further provides a conveying system, comprising:

[0014] sheath; and

[0015] A sheath core is passed through the sheath tube, and at least one of the sheath core and the sheath tube comprises the tubular member as described above.

[0016] The connecting device, tubular member and conveying system provided by the embodiments of the present invention, when the connecting device is applied to the tubular member, since the movable mechanism can move relative to the shell in a first direction under the drive of the reinforcing wire, and can move relative to the shell in a second direction under the drive of the reset mechanism, therefore, when the tubular body of the tubular member is bent, a section of the reinforcing wire located on the inner side of the bend of the tubular body can extend out from the tubular body, and the reset mechanism can drive the movable mechanism to move in the second direction, so that the reinforcing wire can remain tensioned; a section of the reinforcing wire located on the outer side of the bend of the tubular body can enter the tubular body, and the reinforcing wire can drive the movable mechanism to move in the first direction, so that the tubular member including the reinforcing wire and the tubular body has good bending performance.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure of the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0019] Figure 1 is a partial cross-sectional view of a conveying system provided by one embodiment of the present invention;

[0020] Figure 2 is a cross-sectional view of a conveying system provided by one embodiment of the present invention;

[0021] Figure 3 is a partial cross-sectional view of a tubular member provided by one embodiment of the present invention;

[0022] Figure 4 is a cross-sectional view of a tubular member provided by one embodiment of the present invention;

[0023] FIG5(A) is a partial cross-sectional view of a tubular member provided in one embodiment of the present invention;

[0024] FIG5(B) is a partial cross-sectional view of a tubular member provided in one embodiment of the present invention;

[0025] Figure 6 is a partial cross-sectional view of a tubular member provided by one embodiment of the present invention;

[0026] Figure 7 is a schematic structural diagram of a conveying system provided by an embodiment of the present invention;

[0027] FIG8(A) is a partial cross-sectional view of a tubular member provided in one embodiment of the present invention;

[0028] FIG8(B) is a partial cross-sectional view of a tubular member provided in one embodiment of the present invention;

[0029] FIG8(C) is a partial cross-sectional view of a tubular member provided in one embodiment of the present invention;

[0030] Fig. 9 is a partial structural schematic diagram of a conveying system provided by an embodiment of the present invention, wherein a part of a tubular member is shown;

[0031] Fig.10 is a partial structural schematic diagram of a tubular member provided by an embodiment of the present invention;

[0032] Fig.11 is a partial structural schematic diagram of a connecting device provided by an embodiment of the present invention;

[0033] Fig.12 is a partial structural schematic diagram of a tubular member provided by an embodiment of the present invention;

[0034] Fig.13 is a partial structural schematic diagram of a connecting device provided by an embodiment of the present invention;

[0035] Fig.14 is a schematic structural diagram of a second locking member provided by an embodiment of the present invention;

[0036] Fig.15 is a structural schematic diagram of a sliding member provided by an embodiment of the present invention;

[0037] Fig.16 is a partial structural schematic diagram of a tubular member provided by an embodiment of the present invention;

[0038] Fig.17 is a partial structural schematic diagram of a tubular member provided by an embodiment of the present invention;

[0039] Fig.18 is a schematic structural diagram of a moving part provided by an embodiment of the present invention;

[0040] Fig.19 is a partial structural schematic diagram of a tubular member provided by an embodiment of the present invention;

[0041] Fig. 20 1 is a partial cross-sectional view of a tubular member provided by an embodiment of the present invention, wherein a shell is shown.

[0042] Description of reference numerals:

[0043] 1000, delivery system; 1001, sheath tube; 1002, sheath core; 1003, assembly; 1004, handle mechanism; 1005, tubular member;

[0044] 100. Connecting device;

[0045] 10. housing; 11. guide rail; 12. guide groove; 13. guide portion;

[0046] 20. movable mechanism; 21. movable assembly; 211. sliding member; 2111. sliding part; 2112. wire fixing part; 2113. first threading sub-part; 2114. winding sub-part; 2115. second threading sub-part; 2116. hollow hole; 212. rotating member; 2121. second locking surface; 213. winding member; 22. moving wheel assembly; 221. connecting member; 222. moving wheel;

[0047] 30. reset mechanism; 31. elastic structure; 311. first elastic member; 312. second elastic member; 32. deformation adjustment structure; 321. moving member; 3211. moving body; 3212. fixing nut; 322. limiting part;

[0048] 40. locking mechanism; 41. control member; 42. locking assembly; 421. first locking member; 4211. first locking surface; 422. transmission member; 4221. conical surface; 423. second locking member; 4231. hollow channel; 4232. conical wall; 4233. wedge-shaped body; 50. operating part;

[0049] 200, tubular body; 201, first channel; 202, second channel; 203, inner side of the bend; 204, outer side of the bend; 300, reinforcing wire; 301, first reinforcing wire; 302, second reinforcing wire; 303, first section;

[0050] 2000. Interventional devices. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0053] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0054] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0055] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0056] It is understandable that in the field of interventional medical devices, the "distal end" is defined as the end away from the operator during surgery, and the "proximal end" is defined as the end close to the operator during surgery. "Axial" refers to the direction parallel to the line connecting the distal center and the proximal center of the medical device, and "radial" refers to the direction perpendicular to the above-mentioned axial direction.

[0057] In interventional surgery, it is usually necessary to use a delivery system to deliver the interventional device to a preset position in the body of an animal, and then release it to achieve the purpose of treatment. Exemplarily, the interventional device may include at least one of the following: a prosthetic valve, a vascular stent, etc. The animal may include: a human, a monkey, a pig, a dog, a cow, a horse, or a sheep, etc. The following explanation is made by taking a human as an example, but the explanation is not limited thereto.

[0058] See also Figure 1An embodiment of the present invention provides a delivery system 1000, which is used to deliver an interventional device 2000 to a preset position in the body of an animal.

[0059] See also Figure 1 In some embodiments, the delivery system 1000 includes a sheath tube 1001 and a sheath core 1002, the sheath core 1002 passes through the sheath tube 1001, and at least one of the sheath core 1002 and the sheath tube 1001 includes a tubular member 1005 according to any embodiment of the present invention (see Figure 2 ). For example, the sheath core 1002 includes a tubular member 1005 according to any embodiment of the present invention, and the distal end of the reinforcing wire 300 is connected to the distal end of the tubular body 200. For another example, the sheath tube 1001 includes a tubular member 1005 according to any embodiment of the present invention; for another example, the sheath core 1002 and the sheath tube 1001 respectively include a tubular member 1005 according to any embodiment of the present invention.

[0060] See also Figure 1 In some embodiments, the delivery system 1000 further includes an assembly 1003 , which is disposed at the distal end of the reinforcing wire 300 , and the assembly 1003 can be connected to the interventional instrument 2000 .

[0061] See also Figure 2 In some embodiments, the delivery system 1000 further includes a handle mechanism 1004, the proximal end of the sheath 1001 is connected to the handle mechanism 1004, and the sheath 1001 can reciprocate in the axial direction of the sheath core 1002. When the interventional instrument 2000 is connected to the assembly 1003, the handle mechanism 1004 can be driven to drive the sheath 1001 to move in the direction of the interventional instrument 2000, thereby causing at least a portion of the interventional instrument 2000 to be compressed and received in the sheath 1001 (hereinafter referred to as "sheathing").

[0062] See also Figure 3 The embodiment of the present invention provides a tubular member 1005, which can be used in the delivery system 1000 or in the tubular structure of other medical devices. The following explanation is made by taking the tubular member 1005 used in the delivery system 1000 as an example, but the invention is not limited thereto.

[0063] See also Figure 3 In some embodiments, the tubular member 1005 includes a connecting device 100, a tubular body 200, and a reinforcing wire 300. The connecting device 100 is used to connect with the proximal end of the reinforcing wire 300; the reinforcing wire 300 is configured to pass through the tubular body 200.

[0064] In some embodiments, the distal end of the reinforcing wire 300 is connected to the distal end of the tubular body 200, and the proximal end of the reinforcing wire 300 is connected to the connecting device 100. Exemplarily, the assembly part 1003 is connected to the tubular body 200, and the connection method of the two includes at least one of the following: adhesive connection, hot melt connection, etc. The distal end of the reinforcing wire 300 is connected to the assembly part 1003, and the connection method of the two includes at least one of the following: welding, adhesive connection, etc. In other embodiments, the assembly part 1003 can also be omitted, and the distal end of the reinforcing wire 300 is fixedly connected to the tubular body 200.

[0065] See also Figure 4 In some embodiments, the tubular body 200 is formed with a first channel 201 and at least one second channel 202 , and the second channel 202 is used for the reinforcing wire 300 to pass through.

[0066] Exemplarily, the first channel 201 is used for passing a guide wire or other components.

[0067] It is understandable that the number of the second channels 202 and the reinforcing wires 300 can be set according to actual needs, such as one, two, three, four or more. Exemplarily, the number of the second channels 202 is set corresponding to the number of the reinforcing wires 300. Exemplarily, the number of the second channels 202 is equal to the number of the reinforcing wires 300, and each reinforcing wire 300 is provided with a second channel 202.

[0068] See also Figure 4 In some embodiments, when the number of the second channels 202 includes a plurality, the plurality of second channels 202 are arranged at intervals along the circumference of the first channel 201 to effectively improve the tensile and compressive properties of the tubular member 1005. Exemplarily, the plurality of second channels 202 are arranged at equal intervals along the circumference of the first channel 201 to enable the tubular member 1005 to have good tensile and compressive properties when bent in different directions as much as possible.

[0069] Please refer to Figure 5 (A), it can be understood that the tubular body 200 of the tubular member 1005 has a curved inner side 203 and a curved outer side 204 when bent, and the curved outer side 204 of the tubular body 200 is stretched in the bending direction; the curved inner side 203 of the tubular body 200 is compressed in the bending direction.

[0070] Please refer to Figure 5(A) illustratively, when the tubular body 200 is bent, with the axis h of the tubular body 200 as a reference, the inner side 203 of the bend is the compressed portion located on one side of the axis h, and the outer side 204 of the bend is on the side opposite to the inner side 203 of the bend.

[0071] Refer to Fig. 5 (A), illustratively, the reinforcing wire 300 located at the curved inner side 203 of the tubular body 200 has a tendency to shorten. Refer to Fig. 5 (B), illustratively, the reinforcing wire 300 located at the curved outer side 204 of the tubular body 200 has a tendency to elongate. Due to the good tensile and compressive properties of the reinforcing wire 300, the reinforcing wire 300 is difficult to stretch and compress. If the reinforcing wire 300 is fixedly connected to the tubular body 200, the reinforcing wire 300 is difficult to move relative to the tubular body 200. When the tubular member 1005 is bent, the reinforcing wire 300 will be separated from the tubular body 200 by misalignment, and the tubular member 1005 will be twisted, and it is difficult to bend according to actual needs during practical application. In the tubular member 1005 of any embodiment of the present invention, the reinforcing wire 300 can be movably connected with the second channel 202 to ensure that the tubular member 1005 has good bending performance. Exemplarily, a section of the reinforcing wire 300 located outside the second channel 202 can extend into the second channel 202, or a section of the reinforcing wire 300 located inside the second channel 202 can extend out of the second channel 202, so that the tubular member 1005 can have good bending performance.

[0072] Exemplarily, the tubular body 200 of the tubular member 1005 can be made of any suitable material, such as polymer material, etc. The reinforcing wire 300 can be made of any suitable reinforcing material, such as the reinforcing wire 300 includes a metal wire, etc. Exemplarily, the tensile strength of the tubular body 200 is less than the tensile strength of the reinforcing wire 300.

[0073] See also Figure 6 In one embodiment, the connection device 100 includes a housing 10, a movable mechanism 20 and a reset mechanism 30, wherein the movable mechanism 20 can be movably connected to the housing 10, and at least one of the housing 10 and the movable mechanism 20 is configured to be connected to the reinforcing wire 300 of the tubular member 1005; the movable mechanism 20 and the housing 10 are both connected to the reset mechanism 30. The movable mechanism 20 can move relative to the housing 10 in a first direction driven by the reinforcing wire 300, and can move relative to the housing 10 in a second direction driven by the reset mechanism 30, and the first direction is opposite to the second direction.

[0074] In the connection device 100 of the above embodiment, since the movable mechanism 20 can move relative to the housing 10 in the first direction driven by the reinforcing wire 300, and can move relative to the housing 10 in the second direction driven by the reset mechanism 30, when the tubular body 200 of the tubular member 1005 is bent, a section of the reinforcing wire 300 located on the inner side 203 of the bent tubular body 200 can extend from the tubular body 200, and the reset mechanism 30 can drive the movable mechanism 20 to move in the second direction, so that the reinforcing wire 300 can be kept taut, thereby ensuring When the tubular member 1005 enters the animal's body, the reinforcing wire 300 can flexibly extend a section into the tubular body 200 or extend a section out of the tubular body 200 according to actual needs; a section of the reinforcing wire 300 located on the outer side 204 of the bend of the tubular body 200 can extend into the tubular body 200, and the reinforcing wire 300 can drive the movable mechanism 20 to move along the first direction, so that the tubular member 1005 including the reinforcing wire 300 and the tubular body 200 has good bending performance, and the tubular member 1005 can more easily shuttle through the pipeline in the animal's body.

[0075] In some embodiments, due to the tortuous nature of the pipelines in the animal's body, when the delivery system 1000 delivers the interventional device 2000 to a preset position in the animal's body, at least a portion of the tubular body 200 (such as the portion of the tubular body 200 near the distal end) can switch from the first state to the second state, or from the second state to the first state according to actual needs, so as to better adapt to the pipelines in the animal's body, thereby smoothly delivering the delivery system 1000 to the preset position; the degree of bending of at least a portion of the tubular body 200 in the first state is less than that in the second state.

[0076] In some embodiments, the first state is a straight state, and the second state is a bent state. Exemplarily, the tubular body 200 is in a straight state before entering the body of an animal; when the tubular body 200 enters the body of an animal, at least a portion of the tubular body 200 can be switched from the straight state to the bent state, or from the bent state to the straight state according to actual needs. It can be understood that the bent state can include one or more, which is not limited here. When the bent state includes multiple types, at least a portion of the tubular body 200 has different degrees of bending in different bent states.

[0077] See also Figure 7 In some embodiments, at least a portion of the tubular body 200 in the first state is Figure 7 As shown by the dotted line in FIG. 1 , at least part of the tubular body 200 in the second state is as shown in FIG. Figure 7 As shown by the solid line in .

[0078] Please refer to Figure 8(A), combined with Figure 6In some embodiments, the tubular member 1005 includes at least two reinforcing wires 300 , and the at least two reinforcing wires 300 include a first reinforcing wire 301 and a second reinforcing wire 302 , and the first reinforcing wire 301 and the second reinforcing wire 302 are both correspondingly provided with a movable mechanism 20 .

[0079] Please refer to FIG. 8(A) , illustratively, the first reinforcing wire 301 and the second reinforcing wire 302 are arranged opposite to each other.

[0080] Exemplarily, the number of the reinforcing wires 300 includes four, and the four reinforcing wires 300 are arranged at intervals, wherein two reinforcing wires 300 are arranged opposite to each other, and the other two reinforcing wires 300 are arranged opposite to each other.

[0081] Please refer to FIG8(B). In some embodiments, when at least part of the tubular body 200 is switched from the first state to the second state, if the first reinforcing wire 301 is located at the curved outer side 204 of the tubular body 200 and the second reinforcing wire 302 is located at the curved inner side 203 of the tubular body 200, a section of the first reinforcing wire 301 located outside the tubular body 200 can extend into the tubular body 200; the first reinforcing wire 301 can drive the corresponding movable mechanism 20 to move along the first direction to ensure that the first reinforcing wire 301 located outside the tubular body 200 can partially extend into the tubular body 200 according to actual needs. A section of the second reinforcing wire 302 located inside the tubular body 200 can extend out of the tubular body 200, and the movable mechanism 20 corresponding to the second reinforcing wire 302 can move along the second direction driven by the reset mechanism 30 to keep the second reinforcing wire 302 taut. Exemplarily, the structure of the tubular member 1005 when at least part of the tubular body 200 is in the second state is shown in FIG8(B). When at least part of the tubular body 200 switches from the second state to the first state, a section of the first reinforcement wire 301 located inside the tubular body 200 can extend out of the tubular body 200, and the movable mechanism 20 corresponding to the first reinforcement wire 301 can move along the second direction under the drive of the reset mechanism 30, so that the first reinforcement wire 301 remains tensioned; a section of the second reinforcement wire 302 located outside the tubular body 200 can extend into the tubular body 200, and the second reinforcement wire 302 can drive the corresponding movable mechanism 20 to move along the first direction to ensure that the second reinforcement wire 302 located outside the tubular body 200 can partially extend into the tubular body 200 according to actual needs.

[0082] Please refer to FIG8 (C), in combination with FIG8 (A), when at least part of the tubular body 200 is switched from the first state to the second state, if the first reinforcing wire 301 is located at the inner side 203 of the bend of the tubular body 200, and the second reinforcing wire 302 is located at the outer side 204 of the bend of the tubular body 200, a section of the first reinforcing wire 301 located inside the tubular body 200 can extend outside the tubular body 200, and the movable mechanism 20 corresponding to the first reinforcing wire 301 can move along the second direction driven by the reset mechanism 30, so that the first reinforcing wire 301 remains tensioned; a section of the second reinforcing wire 302 located outside the tubular body 200 can extend into the tubular body 200, and the second reinforcing wire 302 can drive the corresponding movable mechanism 20 to move along the first direction, so as to ensure that the second reinforcing wire 302 located outside the tubular body 200 can partially extend into the tubular body 200 according to actual needs. Exemplarily, the structure of the tubular member 1005 when at least part of the tubular body 200 is in the second state is shown in FIG8 (C). When at least part of the tubular body 200 switches from the second state to the first state, a section of the first reinforcement wire 301 located outside the tubular body 200 can extend into the tubular body 200, and the first reinforcement wire 301 can drive the corresponding movable mechanism 20 to move along the first direction to ensure that the first reinforcement wire 301 located outside the tubular body 200 can partially extend into the tubular body 200 according to actual needs; a section of the second reinforcement wire 302 located inside the tubular body 200 can extend out of the tubular body 200, and the movable mechanism 20 corresponding to the second reinforcement wire 302 can move along the second direction driven by the reset mechanism 30 to keep the second reinforcement wire 302 taut.

[0083] Exemplarily, the housing 10 is connected to the handle mechanism 1004. Exemplarily, the tubular body 200 is provided with the handle mechanism 1004; the proximal end of the tubular body 200 is connected to the housing 10, and the connection between the two includes at least one of the following: adhesive connection, hot melt connection, snap connection, screw locking connection, etc.

[0084] See also Fig. 9 , combined with Figure 6 In some embodiments, the movable mechanism 20 includes a sliding member 211, which can be slidably connected to the housing 10; the sliding member 211 can slide from the proximal end to the distal end under the drive of the reinforcing wire 300, and can slide from the distal end to the proximal end under the action of the resetting mechanism 30. In this way, the movable mechanism 20 has a simple structure and a simple movement mode, and the tubular member 1005 has good bending performance.

[0085] Exemplarily, the first direction is from the proximal end toward the distal end, and the second direction is from the distal end toward the proximal end.

[0086] See also Fig. 9In some embodiments, the housing 10 is provided with a guide rail 11, and the sliding member 211 is slidably connected to the guide rail 11. The guide rail 11 can guide the movement of the sliding member 211 and enable the sliding member 211 to move more smoothly.

[0087] See also Fig. 9 In some embodiments, the reset mechanism 30 includes a first elastic member 311, and the two ends of the first elastic member 311 are respectively connected to the sliding member 211 and the housing 10. When a section of the reinforcing wire 300 located outside the tubular body 200 extends into the tubular body 200, the reinforcing wire 300 can drive the sliding member 211 to slide from the proximal end to the distal end, and the first elastic member 311 can be elastically deformed under the action of the sliding member 211; when a section of the reinforcing wire 300 located inside the tubular body 200 extends out of the tubular body 200, the sliding member 211 can slide from the distal end to the proximal end under the action of the elastic restoring force of the first elastic member 311, and at least part of the reinforcing wire 300 can follow the movement of the sliding member 211, so that the reinforcing wire 300 remains taut.

[0088] Exemplarily, the expansion and contraction direction of the first elastic member 311 is parallel to the first direction. Exemplarily, the first elastic member 311 includes at least one of the following: a tension spring, a compression spring, and the like.

[0089] See also Fig.10 In some embodiments, the reset mechanism 30 includes a second elastic member 312, the movable mechanism 20 can rotate in the first direction driven by the reinforcing wire 300, and the second elastic member 312 can be elastically deformed when the movable mechanism 20 rotates in the first direction; the movable mechanism 20 can rotate in the second direction under the elastic restoring force of the second elastic member 312. Exemplarily, the second elastic member 312 includes a torsion spring or a spring spring. The second elastic member 312 can not only realize reset sensitively, but also does not need to be displaced in the axial direction, which is conducive to reducing the volume of the connecting device 100 and facilitating the operation of the doctor.

[0090] In other embodiments, the reset mechanism 30 may not be limited to an elastic reset structure, for example, it may include two magnetic members that attract each other.

[0091] See also Fig.10 In some embodiments, the movable mechanism 20 can rotate along the first direction driven by the reinforcing wire 300 to allow a section of the reinforcing wire 300 located outside the tubular body 200 to extend into the tubular body 200 when at least part of the tubular body 200 is bent; the movable mechanism 20 can rotate along the second direction driven by the second elastic member 312, so that when a section of the reinforcing wire 300 located inside the tubular body 200 extends out of the tubular body 200, the reinforcing wire 300 can still remain tensioned, thereby ensuring that the tubular member 1005 has good bending performance.

[0092] Exemplarily, the movable mechanism 20 can rotate around a rotation axis, and the rotation axis of the movable mechanism 20 is perpendicular to the axial direction of the tubular member 1005 or the axial direction of the housing 10. Exemplarily, the rotation axis of the movable mechanism 20 is perpendicular to the axial direction of the tubular body 200 in the first state.

[0093] See also Fig.10 In some embodiments, the movable mechanism 20 includes a rotating member 212 and a winding member 213. The winding member 213 is used to wind a portion of the reinforcing wire 300. The winding member 213 is connected to the rotating member 212. The winding member 213 can be rotatably connected to the shell 10. One end of the reset mechanism 30 is connected to the winding member 213, and the other end of the reset mechanism 30 is connected to the shell 10. The winding member 213 can rotate along the first direction driven by the reinforcing wire 300 so that the winding member 213 releases part of the reinforcing wire 300 outward, thereby allowing a section of the reinforcing wire 300 located outside the tubular body 200 to extend into the tubular body 200 when at least part of the tubular body 200 is bent; the winding member 213 can rotate along the second direction driven by the reset mechanism 30 so that part of the reinforcing wire 300 is wound around the winding member 213, thereby allowing the reinforcing wire 300 to remain taut when a section of the reinforcing wire 300 located inside the tubular body 200 extends out of the tubular body 200. In this way, the tubular member 1005 can be flexibly bent according to actual needs and has good bending performance.

[0094] See also Fig.10 , illustratively, the reinforcing wire 300 includes a first section 303 and a second section (not shown), the first section 303 is at least partially wound around the winding member 213; the second section is connected to the first section 303, and the second section is used to penetrate the tubular body 200. The flexibility of the first section 303 is greater than the flexibility of the second section, so that when the winding member 213 releases part of the first section 303 or winds part of the first section 303 around the winding member 213, the force applied to the reinforcing wire 300 or the resetting mechanism 30 on the winding member 213 can be as small as possible, at least part of the first section 303 can be released from the winding member 213 more smoothly or wound around the winding member 213, so that part of the reinforcing wire 300 is more easily extended from or extended into the tubular body 200 when the tubular body 200 is bent.

[0095] It is understandable that due to the limitation of the thickness of the blood vessel, the diameter of the tubular body 200 (such as the sheath 1001 or the sheath core 1002, etc.) of the delivery system 1000 needs to be reduced as much as possible; however, as the diameter of the tubular body 200 decreases, the interventional device 2000 will have difficulty in sheathing. When the interventional device 2000 is sheathed, the tubular body 200 is pulled or compressed (such as the sheath core 1002 is pulled, and the sheath 1001 is compressed). The tubular body 200 needs to withstand the corresponding pressure or tension. For this reason, when the interventional device 2000 is sheathed, it is necessary to ensure that the tubular body 200 has good tensile and compressive properties. In the related art, in order to improve the tensile and compressive properties of the tubular body 200, the reinforcing wire 300 is passed through the tubular body 200, and the reinforcing wire 300 is fixedly connected to the tubular body 200 by hot melting or other methods. However, since the reinforcing wire 300 has good tensile and compressive properties, the reinforcing wire 300 is difficult to stretch or compress. When the tubular body 200 fixedly connected to the reinforcing wire 300 is transporting the interventional device 2000, the added reinforcing wire 300 will affect the bending performance of the tubular body 200. For interventional surgeries with more complicated paths, the reinforcing wire 300 may easily cause certain difficulties in bending the tubular body 200 during the process of transporting the interventional device 2000; and when the tubular body 200 is bent on both sides where the reinforcing wire 300 is provided, the reinforcing wire 300 will exert greater resistance on the tubular body 200. Forcibly bending the tubular body 200 may cause the reinforcing wire 300 to be misaligned and separated from the tubular body 200, and cause the tubular body 200 to twist. Therefore, the tubular body 200 fixedly connected to the reinforcing wire 300 can only bend on both sides where the reinforcing wire 300 is not provided, thereby limiting the application of the tubular member 1005.

[0096] It is understandable that for the structure in which the reinforcing wire 300 and the tubular body 200 are fixedly connected as one, if the wire diameter of the reinforcing wire 300 is reduced to improve the bending performance of the tubular body 200, the tensile performance of the structure in which the reinforcing wire 300 and the tubular body 200 are fixedly connected as one will be poor.

[0097] In the connecting device 100 of any embodiment of the present invention, the reinforcing wire 300 is passed through the tubular body 200, and the reinforcing wire 300 can move relative to the tubular body 200 according to actual needs, so that the tubular member 1005 has good bending performance, and the tubular body 200 and the tubular member 1005 can be bent in the direction of the two sides where the reinforcing wire 300 is passed through, and can also be bent in the direction of the two sides where the reinforcing wire 300 is not passed through.

[0098] See also Fig.10In some embodiments, the connecting device 100 also includes a locking mechanism 40, which can move to lock or unlock the movable mechanism 20; when the movable mechanism 20 is unlocked, the movable mechanism 20 can move relative to the shell 10 along the first direction driven by the reinforcing wire 300, and can move relative to the shell 10 along the second direction driven by the reset mechanism 30.

[0099] The connecting device 100 of this embodiment has a locking mechanism 40 that can move to lock or unlock the movable mechanism 20. When the movable mechanism 20 is unlocked, the movable mechanism 20 can move relative to the shell 10 in a first direction driven by the reinforcing wire 300, and can move relative to the shell 10 in a second direction driven by the resetting mechanism 30. Therefore, in a scenario where the tubular member 1005 needs to have good tensile and compressive properties (such as in a scenario where the interventional device 2000 is sheathed), the locking mechanism 40 can move so that the locking mechanism 40 locks the movable mechanism 20, thereby making the tubular member 1005 have good tensile and compressive properties; in a scenario where the tubular member 1005 needs to have good bending properties, the locking mechanism 40 can move to unlock the movable mechanism 20, thereby making the tubular member 1005 have good bending properties. Therefore, the tubular member 1005 including the above-mentioned connecting device 100 has good tensile and compressive properties when the locking mechanism 40 locks the movable mechanism 20; and has good bending properties when the locking mechanism 40 unlocks the movable mechanism 20. In actual application, the movable mechanism 20 can be locked or unlocked according to actual needs, so that the tubular member 1005 selectively has good tensile properties (or compressive properties) and bending properties.

[0100] It can be understood that when the interventional device 2000 is inserted into the sheath, the interventional device 2000 is compressed radially and pulled axially, and the sheath tube 1001 is subjected to a radial outward expansion force and pressure from the interventional device 2000. The sheath core 1002 needs to withstand the tension from the interventional device 2000, so as to receive the interventional device 2000 into the sheath tube 1001. Exemplarily, the sheath core 1002 includes a tubular member 1005 of any embodiment of the present invention, so that the sheath core 1002 has good tensile resistance when the interventional device 2000 is inserted into the sheath. Exemplarily, the sheath tube 1001 includes a tubular member 1005 of any embodiment of the present invention, so that the sheath tube 1001 has good compressive resistance when the interventional device 2000 is inserted into the sheath.

[0101] Exemplarily, when the movable mechanism 20 is unlocked, during the process of the tubular body 200 of the tubular member 1005 switching from the first state to the second state, a section of the reinforcing wire 300 located on the inner side 203 of the bend of the tubular body 200 can extend from the tubular body 200, and the reset mechanism 30 can drive the movable mechanism 20 to move in the second direction, so that even if a section of the reinforcing wire 300 extends from the tubular body 200, the reinforcing wire 300 can remain tensioned; a section of the reinforcing wire 300 located on the outer side 204 of the bend of the tubular body 200 can extend into the tubular body 200, and the reinforcing wire 300 can drive the movable mechanism 20 to move in the first direction. When the movable mechanism 20 is unlocked and the tubular body 200 of the tubular member 1005 is switched from the second state to the first state, a section of the reinforcing wire 300 located on the curved inner side 203 of the tubular body 200 can extend into the tubular body 200, and the reinforcing wire 300 can drive the movable mechanism 20 to move in the first direction; a section of the reinforcing wire 300 located on the curved outer side 204 of the tubular body 200 can extend from the tubular body 200, and the resetting mechanism 30 can drive the movable mechanism 20 to move in the second direction, thereby keeping the reinforcing wire 300 taut.

[0102] It can be understood that the reinforcing wire 300 is always kept taut, and when the movable mechanism 20 is locked, when the tubular member 1005 or the tubular body 200 is stretched, the reinforcing wire 300 can provide the tubular member 1005 or the tubular body 200 with better tensile properties.

[0103] See also Fig.10 and Fig.11 In some embodiments, the locking mechanism 40 includes a control member 41 and a locking assembly 42, wherein the control member 41 is connected to at least a portion of the locking assembly 42; the control member 41 can drive at least a portion of the locking assembly 42 to move in a first direction, so that the locking assembly 42 locks the movable mechanism 20; the control member 41 can drive at least a portion of the locking assembly 42 to move in a second direction, so that at least a portion of the locking assembly 42 unlocks the movable mechanism 20. The control member 41 can drive at least a portion of the locking assembly 42 to move in the first direction or the second direction, so as to lock or unlock the movable mechanism 20.

[0104] Exemplarily, when the control member 41 rotates in a preset rotation direction, the control member 41 can drive at least part of the locking assembly 42 to move in a first direction to lock the movable mechanism 20; when the control member 41 rotates in a direction opposite to the preset rotation direction, the control member 41 can drive at least part of the locking assembly 42 to move in a second direction to unlock the movable mechanism 20. Exemplarily, the preset rotation direction is perpendicular to the axial direction of the housing 10.

[0105] Exemplarily, the movement direction of the control member 41 is the same as the movement direction of at least part of the locking assembly 42. For example, the control member 41 is connected to at least part of the locking assembly 42, and the control member 41 can move synchronously with at least part of the locking assembly 42; when the control member 41 moves along a first direction, the control member 41 can drive at least part of the locking assembly 42 to move synchronously along the first direction to lock the movable mechanism 20; when the control member 41 moves along a second direction, the control member 41 can drive at least part of the locking assembly 42 to move synchronously along the second direction to unlock the movable mechanism 20.

[0106] Exemplarily, the control element 41 includes a control knob or a control button, etc.

[0107] See also Fig.10 and Fig.11 In some embodiments, the locking assembly 42 includes a first locking member 421, which is connected to the control member 41; the control member 41 can drive the first locking member 421 to move from the proximal end to the distal end, so that the first locking member 421 and the rotating member 212 of the movable mechanism 20 are damped and cooperated, thereby locking the movable mechanism 20; the control member 41 can drive the first locking member 421 to move from the distal end to the proximal end, so that the first locking member 421 and the movable mechanism 20 are disengaged from the damping cooperation, thereby unlocking the movable mechanism 20.

[0108] See also Fig.10 and Fig.11 Exemplarily, the movable mechanism 20 includes a rotating member 212 and a winding member 213. When the first locking member 421 is in damping cooperation with the rotating member 212, the rotating member 212 contacts the first locking member 421 and generates a damping force. The damping force applied by the first locking member 421 to the rotating member 212 can prevent the movable mechanism 20 from moving, thereby locking the rotating member 212, and then locking the winding member 213. When the first locking member 421 is out of damping cooperation with the rotating member 212, the damping force between the rotating member 212 and the first locking member 421 is zero, and the first locking member 421 does not apply a damping force to the rotating member 212, thereby unlocking the rotating member 212, and then unlocking the winding member 213. The damping cooperation of the following two components is similar, and will not be repeated here.

[0109] Exemplarily, the reinforcing wire 300 is located at the curved outer side 204 of the tubular body 200, and the first locking member 421 unlocks the movable mechanism 20. In the process of switching at least a portion of the tubular body 200 from the first state to the second state, the reinforcing wire 300 located in the tubular body 200 is pulled and has a tendency to stretch, and the reinforcing wire 300 can drive the winding member 213 to rotate along the first direction, so that the winding member 213 releases part of the reinforcing wire 300 outward, so as to allow the reinforcing wire 300 outside the tubular body 200 to extend into the tubular body 200; the reset mechanism 30 can be elastically deformed when the winding member 213 rotates along the first direction. In the process of switching at least part of the tubular body 200 from the second state to the first state, a section of the reinforcing wire 300 located inside the tubular body 200 can extend out of the tubular body 200, and the winding member 213 can rotate along the second direction under the elastic restoring force of the reset mechanism 30 to wind part of the reinforcing wire 300 around the winding member 213, so that the reinforcing wire 300 is kept taut. It can be understood that the corresponding movement principle when the reinforcing wire 300 is located on the curved inner side 203 of the tubular body 200 is similar, and will not be repeated here.

[0110] In some embodiments, the rotation axis of the winding member 213 is perpendicular to the moving direction of the first locking member 421. In other embodiments, the rotation axis of the winding member 213 may also intersect with the moving direction of the first locking member 421 but not be perpendicular.

[0111] In some embodiments, the rotation axis of the rotating member 212 is perpendicular to the moving direction of the first locking member 421. In other embodiments, the rotation axis of the rotating member 212 may also intersect with the moving direction of the first locking member 421 but not be perpendicular.

[0112] Exemplarily, the rotation axis of the winding member 213 coincides with the rotation axis of the rotating member 212 , so that the structure of the movable mechanism 20 is simple. In other embodiments, the rotation axis of the winding member 213 may also be parallel to or intersect with the rotation axis of the rotating member 212 .

[0113] In some embodiments, one or more movable mechanisms 20 are provided with a first locking member 421. For example, when the number of movable mechanisms 20 includes multiple, each reinforcing wire 300 is provided with a movable mechanism 20, and multiple movable mechanisms 20 are provided with a first locking member 421. In this way, each movable mechanism 20 can be locked or unlocked by controlling a first locking member 421 through the control member 41. The locking or unlocking operation is simple, the number of components is small, and the structure is simple and compact. In other embodiments, each movable mechanism 20 can also be provided with a first locking member 421.

[0114] In some embodiments, the first locking member 421 can be integrally formed and connected with the control member 41; the first locking member 421 can also be separately provided with the control member 41, and the two are connected by at least one of the following methods: snap connection, threaded connection, adhesive connection, screw locking connection, etc. Exemplarily, the first locking member 421 is threadedly connected with the control member 41, so that when the movable mechanism 20 is locked or unlocked, the first locking member 421 can be maintained in the corresponding locked position or unlocked position without additionally providing a position holding structure. On the premise of ensuring that the locking mechanism 40 can unlock or lock the movable mechanism 20, the structure of the connection device 100 is simple and the number of components is small.

[0115] See also Fig.10 For example, the winding member 213 is rotatably connected to the housing 10 , and the housing 10 can provide certain support and limit for the winding member 213 to ensure that the winding member 213 can rotate relative to the housing 10 .

[0116] Exemplarily, the rotating member 212 and at least a portion of the winding member 213 are disposed in the housing 10. Exemplarily, at least a portion of the first locking member 421 is disposed in the housing 10.

[0117] Exemplarily, the rotating member 212 can be integrally connected with the winding member 213; the rotating member 212 can also be separately provided with the winding member 213, and the two are connected by at least one of the following methods: snap connection, threaded connection, adhesive connection, screw locking connection, etc.

[0118] See also Fig.11 , exemplarily, the first locking member 421 is formed with a first locking surface 4211, and the rotating member 212 is formed with a second locking surface 2121. The control member 41 can drive the first locking member 421 to move from the proximal end to the distal end so that the first locking surface 4211 contacts and dampingly cooperates with the second locking surface 2121, thereby locking the rotating member 212; the control member 41 can drive the first locking member 421 to move from the distal end to the proximal end so that the first locking surface 4211 and the second locking surface 2121 are disengaged from the damping cooperation, thereby unlocking the rotating member 212.

[0119] It can be understood that the shapes and / or structures of the rotating member 212, the first locking member 421, the first locking surface 4211, and the second locking surface 2121 can be set according to actual needs. For example, the first locking surface 4211 includes a concave arc surface. The shape of the concave arc surface is conducive to increasing the contact area with the rotating member 212 and improving the locking efficiency. For another example, the rotating member 212 includes a rotating wheel, and the second locking surface 2121 includes the side of the rotating wheel.

[0120] In some embodiments, the rotating member 212 may also be omitted, and the first locking member 421 may be in damping cooperation or disengage from damping cooperation with the winding member 213 of the movable mechanism 20 , thereby unlocking or locking the winding member 213 .

[0121] See also Fig.12 In one embodiment, the locking assembly 42 includes a transmission member 422 and a second locking member 423, the transmission member 422 is connected to the control member 41; the transmission member 422 is at least partially inserted in the second locking member 423; the control member 41 can drive the transmission member 422 to move from the proximal end to the distal end, so that the second locking member 423 locks the movable mechanism 20; the control member 41 can drive the transmission member 422 to move from the distal end to the proximal end, so that the second locking member 423 unlocks the movable mechanism 20.

[0122] See also Fig.12 , illustratively, the movable mechanism 20 includes a sliding member 211. The control member 41 can drive the transmission member 422 to move from the proximal end to the distal end, so that the transmission member 422 drives at least part of the second locking member 423 to move, so that the second locking member 423 and the sliding member 211 are damped and matched, thereby locking the sliding member 211; the control member 41 can drive the transmission member 422 to move from the distal end to the proximal end, so that the second locking member 423 and the sliding member 211 are disengaged from the damping match, thereby unlocking the sliding member 211.

[0123] Exemplarily, the reinforcing wire 300 is located at the curved outer side 204 of the tubular body 200, and the second locking member 423 unlocks the sliding member 211. In the process of switching at least part of the tubular body 200 from the first state to the second state, the reinforcing wire 300 located in the tubular body 200 is stretched and has a tendency to elongate, and the reinforcing wire 300 can drive the sliding member 211 to slide from the proximal end to the distal end, so as to allow the reinforcing wire 300 outside the tubular body 200 to extend into the tubular body 200; the reset mechanism 30 can be elastically deformed when the sliding member 211 slides from the proximal end to the distal end. In the process of switching at least part of the tubular body 200 from the second state to the first state, a section of the reinforcing wire 300 located in the tubular body 200 can extend out of the tubular body 200, and the sliding member 211 can slide from the distal end to the proximal end under the action of the elastic restoring force of the reset mechanism 30, so that the reinforcing wire 300 can remain taut. It can be understood that the corresponding movement principle when the reinforcing wire 300 is located on the curved inner side 203 of the tubular body 200 is similar and will not be described in detail here.

[0124] See also Fig.12In some embodiments, the moving direction of the transmission member 422 is parallel to the moving direction of the movable mechanism 20, and the moving direction of the second locking member 423 intersects with the moving direction of the movable mechanism 20. Exemplarily, the moving direction of the transmission member 422 is parallel to the sliding direction of the sliding member 211, and the moving direction of the second locking member 423 is perpendicular to the sliding direction of the sliding member 211.

[0125] In some embodiments, one or more movable mechanisms 20 are provided with a corresponding transmission member 422. For example, when the number of movable mechanisms 20 includes multiple, multiple movable mechanisms 20 are provided with a corresponding transmission member 422, so that each movable mechanism 20 can be locked or unlocked by controlling a transmission member 422 through the operation control member 41, and the unlocking or unlocking operation is simple, the number of components is small, and the structure is simple and compact. In other embodiments, each movable mechanism 20 can also be provided with a corresponding transmission member 422.

[0126] In some embodiments, the number of movable mechanisms 20 is set corresponding to the number of second locking members 423. For example, when the number of movable mechanisms 20 includes multiple, one movable mechanism 20 is correspondingly provided with one second locking member 423, so that the arrangement of the second locking member 423 is flexible and easy to assemble. In other embodiments, multiple movable mechanisms 20 may also be correspondingly provided with one second locking member 423.

[0127] In some embodiments, the transmission member 422 can be integrally formed and connected with the control member 41; the transmission member 422 can also be separately provided with the control member 41, and the two are connected by at least one of the following methods: snap connection, thread, adhesive connection, screw locking connection, etc. Exemplarily, the transmission member 422 is threadedly connected with the control member 41, so that when the movable mechanism 20 is locked or unlocked, the transmission member 422 can be kept in the corresponding position without additionally setting a position holding structure, so that the second locking member 423 can be kept in the corresponding locking position or unlocking position. On the premise of ensuring that the locking mechanism 40 can unlock or lock the movable mechanism 20, the structure of the connection device 100 is simple and the number of components is small.

[0128] In other embodiments, the transmission member 422 may also be omitted, and the second locking member 423 is directly connected to the control member 41 , and the control member 41 drives the second locking member 423 to move, so that the second locking member 423 locks or unlocks the movable mechanism 20 .

[0129] See also Fig.13In some embodiments, the second locking member 423 can form a hollow channel 4231, the channel wall of the hollow channel 4231 includes a conical wall 4232, the transmission member 422 is provided with a conical surface 4221, and the control member 41 can drive the transmission member 422 to move from the proximal end to the distal end so that the conical surface 4221 cooperates with the conical wall 4232, thereby making the second locking member 423 cooperate with the movable mechanism 20 damping. It can be understood that when the control member 41 drives the transmission member 422 to move from the proximal end to the distal end until the conical surface 4221 is tightly fitted with the conical wall 4232, as the transmission member 422 further moves from the proximal end to the distal end, at least part of the conical wall 4232 can move so that the second locking member 423 and the movable mechanism 20 are damping-fitted, thereby locking the movable mechanism 20; when the control member 41 drives the transmission member 422 to move from the distal end to the proximal end to a certain position, the conical surface 4221 no longer presses against the conical wall 4232, and the second locking member 423 and the movable mechanism 20 are disengaged from the damping fit, thereby unlocking the movable mechanism 20.

[0130] See also Fig.13 In some embodiments, the second locking member 423 includes a plurality of wedges 4233, and the plurality of wedges 4233 can cooperate to form a hollow channel 4231. Thus, when the control member 41 drives the transmission member 422 to move from the proximal end to the distal end, the wedges 4233 can move radially outwardly along the hollow channel 4231, so that the wedges 4233 contact and damp the movable mechanism 20, thereby locking the movable mechanism 20; when the control member 41 drives the transmission member 422 to move from the distal end to the proximal end, the wedges 4233 can move radially inwardly along the hollow channel 4231, so that the wedges 4233 and the movable mechanism 20 are disengaged from the damping cooperation, thereby unlocking the movable mechanism 20. Exemplarily, the plurality of wedges 4233 are arranged at intervals along the circumference of the hollow channel 4231 to allow the wedges 4233 to move radially.

[0131] In other embodiments, the second locking member 423 may also be other structures. Fig.14 The proximal ends of the multiple wedge-shaped bodies 4233 are arranged at intervals along the circumference of the hollow channel 4231; the distal ends of the multiple wedge-shaped bodies 4233 are connected as a whole, while the proximal ends of the multiple wedge-shaped bodies 4233 are not connected to each other, thereby allowing the unconnected parts of the wedge-shaped bodies 4233 to still be able to move radially to achieve contact and damping cooperation with the movable mechanism 20, while reducing the difficulty of assembling the wedge-shaped bodies 4233.

[0132] It can be understood that the proximal end of the reinforcing wire 300 can be fixedly connected to the movable mechanism 20 ; or, the proximal end of the reinforcing wire 300 can also be fixedly connected to the shell 10 .

[0133] See also Fig.15In some embodiments, the movable mechanism 20 includes a sliding member 211, the sliding member 211 includes a sliding portion 2111 and a fixing portion 2112, the sliding portion 2111 is slidably connected to the housing 10, and the sliding portion 2111 is connected to the reset mechanism 30. The fixing portion 2112 is connected to the sliding portion 2111, and the fixing portion 2112 is configured to fix the proximal end of the reinforcing wire 300. In this way, the reinforcing wire 300 can drive the sliding member 211 to move along the first direction; and the sliding member 211 can pre-tighten the reinforcing wire 300 under the action of the reset mechanism 30, so that the reinforcing wire 300 can be kept taut.

[0134] See also Fig.15 In some embodiments, the fixing portion 2112 includes a first insertion sub-portion 2113, a winding sub-portion 2114, and a second insertion sub-portion 2115, and both ends of the winding sub-portion 2114 are connected to the first insertion sub-portion 2113 and the second insertion sub-portion 2115. Exemplarily, the reinforcing wire 300 is inserted through the first insertion sub-portion 2113, and the reinforcing wire 300 passing through the first insertion sub-portion 2113 is wound around the winding sub-portion 2114, and then the second insertion sub-portion 2115 is inserted, so that the proximal end of the reinforcing wire 300 can be reliably fixed to the fixing portion 2112. Exemplarily, the diameter of the winding sub-portion 2114 is smaller than the diameter of the first insertion sub-portion 2113 and the second insertion sub-portion 2115, so that the first insertion sub-portion 2113 and the second insertion sub-portion 2115 can limit the reinforcing wire 300 wound on the winding sub-portion 2114.

[0135] Exemplarily, the first penetration sub-portion 2113, the winding sub-portion 2114 and the second penetration sub-portion 2115 cooperate to form a hollow hole 2116, and the hollow hole 2116 is connected to the second penetration sub-portion 2115. The reinforcing wire 300 can enter the hollow hole 2116 through the second penetration sub-portion 2115, and an external screw or the like can be inserted into the hollow hole 2116 to lock the proximal end of the reinforcing wire 300, thereby improving the connection reliability between the reinforcing wire 300 and the fixing portion 2112.

[0136] See also Fig.16In some embodiments, the movable mechanism 20 includes a movable assembly 21 and a moving wheel assembly 22, the moving wheel assembly 22 is connected to the movable assembly 21, the moving wheel assembly 22 is used for winding the reinforcing wire 300, and the proximal end of the reinforcing wire 300 is used to connect with the housing 10; the moving wheel assembly 22 can move under the drive of the reinforcing wire 300, thereby driving the movable assembly 21 to move along the first direction; the movable assembly 21 can move along the second direction under the drive of the reset mechanism 30, thereby driving the moving wheel assembly 22 to move, thereby keeping the reinforcing wire 300 taut. In this way, the reinforcing wire 300 extending from the tubular body 200 can be extended as smoothly as possible, reducing the resistance of the reinforcing wire 300 to move, and providing a guarantee for the reinforcing wire 300 to be able to smoothly partially extend into or extend out of the tubular body 200 according to actual needs.

[0137] Exemplarily, when the movable component 21 is unlocked, the moving wheel assembly 22 can move driven by the reinforcing wire 300, so that the moving wheel assembly 22 drives the movable component 21 to move in a first direction to allow the reinforcing wire 300 outside the tubular body 200 to partially extend into the tubular body 200; the movable component 21 can move in a second direction driven by the resetting mechanism 30, thereby driving the moving wheel assembly 22 to move, so that the reinforcing wire 300 remains tensioned under the action of the moving wheel assembly 22.

[0138] Exemplarily, the movable component 21 includes the sliding member 211 of any one of the above embodiments. Exemplarily, the movable component 21 includes at least one of a winding member 213 and a rotating member 212, the winding member 213 includes the winding member 213 of any one of the above embodiments, and the rotating member 212 includes the rotating member 212 of any one of the above embodiments.

[0139] See also Fig.16 In some embodiments, the moving wheel assembly 22 includes a connecting member 221 and a moving wheel 222, the connecting member 221 is connected to the sliding member 211; the moving wheel 222 is connected to the connecting member 221, and the moving wheel 222 is used for winding the reinforcing wire 300; the moving wheel 222 can move under the drive of the reinforcing wire 300, thereby driving the connecting member 221 to move, and then driving the sliding member 211 to move along the first direction; the movable mechanism 20 can move in the second direction under the drive of the reset mechanism 30, thereby driving the connecting member 221 and the moving wheel 222 to move, so that the reinforcing wire 300 remains tensioned under the action of the moving wheel 222.

[0140] Exemplarily, the reinforcing wire 300 is located at the curved outer side 204 of the tubular body 200. In the process of switching at least part of the tubular body 200 from the first state to the second state, the reinforcing wire 300 located in the tubular body 200 is stretched and has a tendency to elongate, and the reinforcing wire 300 can drive the moving wheel 222 to move, so that the connecting member 221 drives the sliding member 211 to slide from the proximal end to the distal end, so as to allow the reinforcing wire 300 outside the tubular body 200 to partially extend into the tubular body 200; in the process of switching at least part of the tubular body 200 from the second state to the first state, a section of the reinforcing wire 300 located in the tubular body 200 can extend out of the tubular body 200, and the sliding member 211 can slide from the distal end to the proximal end under the action of the reset force of the reset mechanism 30, so that the sliding member 211 drives the connecting member 221 and the moving wheel 222 to move, and then the reinforcing wire 300 is kept taut under the action of the moving wheel 222.

[0141] Exemplarily, the movement direction of the moving wheel 222 is parallel to the first direction, so that the driving force required to drive the movement of the moving wheel 222 can be as small as possible, which is more labor-saving. In other embodiments, the movement direction of the moving wheel 222 can also intersect with the first direction but not perpendicular.

[0142] Exemplarily, the connecting member 221 and the moving wheel 222 can be integrally formed and connected; the connecting member 221 and the moving wheel 222 can also be separately provided, and the two are connected by at least one of the following methods: snap connection, threaded connection, adhesive connection, screw locking connection, etc.

[0143] Exemplarily, the connecting member 221 and at least a part of the movable mechanism 20 (such as the sliding member 211 or the winding member 213) can be connected in one piece; the connecting member 221 and at least a part of the movable mechanism 20 can also be arranged separately and connected by at least one of the following methods: snap connection, threaded connection, adhesive connection, screw locking connection, etc.

[0144] See also Fig.16 , combined with Fig.12 In some embodiments, the connection device 100 further includes an operating portion 50, which is connected to the movable mechanism 20, and at least partially located outside the housing 10; the operating portion 50 can drive the movable mechanism 20 to move along the second direction. In this way, the movable mechanism 20 can be driven to move by the operating portion 50, thereby controlling the reinforcing wire 300, so that the reinforcing wire 300 drives the tubular body 200 to bend, and then the bending degree of the tubular member 1005 can be actively adjusted according to actual needs, thereby realizing the bending adjustment function of the tubular body 200. It can be understood that at least part of the operating portion 50 extends out of the housing, so that the operating portion 50 can be operated manually or through other external devices.

[0145] Exemplarily, when the locking mechanism 40 unlocks the movable mechanism 20 , the operating portion 50 can drive the movable mechanism 20 to move along the second direction.

[0146] Exemplarily, the operating portion 50 includes a slide button or the like.

[0147] See also Fig.17 In some embodiments, the reset mechanism 30 includes an elastic structure 31 and a deformation adjustment structure 32, the elastic structure 31 is elastic; the movable mechanism 20 and the deformation adjustment structure 32 are respectively connected to the elastic structure 31, and the deformation adjustment structure 32 is used to adjust the deformation of the elastic structure 31. It can be understood that the greater the tension of the elastic structure 31, the tighter the reinforcing wire 300, the greater the tension of the reinforcing wire 300, and the greater the force required for the tubular body 200 through which the reinforcing wire 300 is passed to bend. In this embodiment, the deformation of the elastic structure 31 can be adjusted by the deformation adjustment structure 32, so that the tension of the elastic structure 31 can be adjusted according to actual needs, and then the initial tension of the reinforcing wire 300 can be adjusted.

[0148] See also Fig.17 In some embodiments, the shell 10 forms a limiting portion 322, and the deformation adjustment structure 32 includes a moving part 321 and a limiting portion 322, and the moving part 321 can move relative to the shell 10; the limiting portion 322 is formed on the shell 10, and the limiting portion 322 can cooperate with the moving part 321 to limit the moving position of the moving part 321 relative to the shell 10. In this way, when the deformation adjustment structure 32 adjusts the deformation amount of the elastic structure 31 to an appropriate amount, the limiting portion 322 can limit the moving part 321 to a desired position.

[0149] See also Fig.17 , exemplarily, the limiting portion 322 includes at least two limiting holes, and the plurality of limiting holes are arranged at intervals, and the moving member 321 can be selectively inserted into any of the limiting holes to adjust the deformation of the elastic structure 31. It can be understood that when the deformation of the elastic structure 31 needs to be adjusted, the moving member 321 can be disengaged from the limiting cooperation with the limiting hole, so that the moving member 321 can move relative to the housing 10. When the moving member 321 moves to a suitable position to adjust the deformation of the elastic structure 31 to a suitable amount, the moving member 321 can be inserted into the corresponding limiting hole, and the movement of the moving member 321 is limited by the limiting cooperation between the moving member 321 and the limiting hole.

[0150] See also Fig.18 In some embodiments, the moving part 321 includes a moving body 3211 and a fixing nut 3212 , one end of the elastic structure 31 is connected to the moving body 3211 , and one end of the elastic structure 31 is limited and fixed to the moving body 3211 by the fixing nut 3212 .

[0151] Exemplarily, at least a portion of the moving body 3211 extends out of the housing 10 to facilitate the user to manipulate the moving body 3211 .

[0152] In some embodiments, the two ends of the elastic structure 31 are respectively connected to the moving member 321 and at least part of the movable mechanism 20. Fig.19 Exemplarily, the housing 10 is formed with a guide groove 12 , and the moving member 321 can be slidably connected to the guide groove 12 to drive one end of the elastic structure 31 to move, thereby adjusting the deformation amount of the elastic structure 31 .

[0153] Exemplarily, two ends of the elastic structure 31 are respectively connected to the sliding member 211 and the moving member 321. The elastic structure 31 includes the first elastic member 311 of any one of the above embodiments.

[0154] Exemplarily, two ends of the elastic structure 31 are respectively connected to the winding member 213 and the moving member 321. The elastic structure 31 includes the second elastic member 312 of any one of the above embodiments.

[0155] See also Fig. 20 , combined with Figure 6 In some embodiments, the shell 10 is provided with a guide portion 13 for guiding the reinforcing wire 300. In this way, the reinforcing wire 300 extending from the tubular body 200 can be extended as smoothly as possible, reducing the resistance to the movement of the reinforcing wire 300, and providing a guarantee for the reinforcing wire 300 to be able to smoothly extend into or out of the tubular body 200 according to actual needs.

[0156] Exemplarily, the guide portion 13 includes a smooth transition surface to smoothly transition the reinforcing wire 300. Exemplarily, the guide portion 13 includes an arc-shaped transition surface or the like.

[0157] The number of the guide parts 13 can be set according to actual needs, such as one, two, three or more. Exemplarily, the reinforcing wire 300 extending from the tubular body 200 is connected to the movable mechanism 20 after being guided by the two guide parts 13 .

[0158] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "mechanically coupled" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. The mechanical coupling or coupling of two components includes direct coupling and indirect coupling, for example, direct fixed connection, connection through a transmission mechanism, etc. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0159] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0160] The disclosure above provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described above. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art may appreciate the application of other processes and / or the use of other materials.

[0161] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific method steps, features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific method steps, features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0162] The above is only a specific embodiment 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 various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A connection device, characterized in that: include: case; A movable mechanism, capable of being movably connected to the shell, wherein at least one of the shell and the movable mechanism is configured to be connected to the reinforcing wire of the tubular member; A reset mechanism, the movable mechanism and the housing are both connected to the reset mechanism; Wherein, the movable mechanism can move relative to the shell along a first direction driven by the reinforcing wire, and can move relative to the shell along a second direction driven by the resetting mechanism, and the first direction is opposite to the second direction.

2. The connection device according to claim 1, characterized in that: The activity agencies include: The sliding member can be slidably connected to the shell; the sliding member can slide from the proximal end to the distal end under the drive of the reinforcing wire, and can slide from the distal end to the proximal end under the action of the resetting mechanism.

3. The connection device according to claim 1, characterized in that: The activity agencies include: Rotating parts; A winding piece, used for winding part of the reinforcing wire, is connected to the rotating piece and can be rotatably connected to the shell. One end of the reset mechanism is connected to the winding piece and the other end is connected to the shell. The winding piece can rotate along the first direction driven by the reinforcing wire so that the winding piece releases part of the reinforcing wire outward, and can rotate along the second direction driven by the reset mechanism to wind part of the reinforcing wire around the winding piece.

4. The connection device according to claim 1, characterized in that: Also includes: A locking mechanism, wherein the locking mechanism can move to lock or unlock the movable mechanism; when the movable mechanism is unlocked, the movable mechanism can move relative to the shell in a first direction driven by the reinforcing wire, and can move relative to the shell in a second direction driven by the resetting mechanism.

5. The connection device according to claim 4, characterized in that: The locking mechanism comprises: Controls; A first locking member is connected to the control member; the control member can drive the first locking member to move from the proximal end to the distal end so that the first locking member and the movable mechanism are damped and cooperated, thereby locking the movable mechanism; the control member can drive the first locking member to move from the distal end to the proximal end so that the first locking member and the movable mechanism are disengaged from the damping cooperation, thereby unlocking the movable mechanism.

6. The connection device according to claim 4, characterized in that: The locking mechanism comprises: Controls; A transmission member connected to the control member; The second locking member, the transmission member is at least partially inserted into the second locking member; the control member can drive the transmission member to move from the proximal end to the distal end, so that the second locking member locks the movable mechanism; the control member can drive the transmission member to move from the distal end to the proximal end, so that the second locking member unlocks the movable mechanism.

7. The connection device according to claim 6, characterized in that: The second locking member can form a hollow channel, the channel wall of the hollow channel includes a conical wall, the transmission member is provided with a conical surface, and the control member can drive the transmission member to move from the proximal end to the distal end so that the conical surface cooperates with the conical wall, thereby making the second locking member cooperate with the movable mechanism damping.

8. The connection device according to claim 4, characterized in that: The rotation axis of the winding member of the movable mechanism is perpendicular to the moving direction of the first locking member; or, The moving direction of the transmission member of the locking mechanism is parallel to the moving direction of the movable mechanism, and the moving direction of the second locking member of the locking mechanism intersects with the moving direction of the movable mechanism.

9. The connection device according to any one of claims 1 to 8, characterized in that: The activity agencies include: Active components; A moving wheel assembly is connected to the movable assembly and is used for winding the reinforcing wire, and the proximal end of the reinforcing wire is used to be connected to the shell; the moving wheel assembly can move driven by the reinforcing wire, thereby driving the movable assembly to move along the first direction; the movable assembly can move along the second direction driven by the reset mechanism, thereby driving the moving wheel assembly to move.

10. The connection device according to any one of claims 1 to 8, characterized in that: The movable mechanism comprises a sliding member, and the sliding member comprises: A sliding portion, slidably connected to the housing and connected to the reset mechanism; The wire fixing part is connected to the sliding part and is configured to fix the proximal end of the reinforcing wire.

11. The connection device according to any one of claims 1 to 8, characterized in that: The connecting device also includes: An operating part is connected to the movable mechanism, and at least a part of the operating part is located outside the shell; the operating part can drive the movable mechanism to move along the second direction.

12. The connection device according to any one of claims 1 to 8, characterized in that: The reset mechanism comprises: Elastic structure, with elasticity; The deformation adjusting structure, the movable mechanism and the deformation adjusting structure are respectively connected to the elastic structure, and the deformation adjusting structure is used to adjust the deformation amount of the elastic structure.

13. A tubular member, characterized in that: include: tubular body; A reinforcing wire, passing through the tubular body; as well as The connecting device according to any one of claims 1 to 12, wherein the proximal end of the reinforcing wire is connected to the connecting device.

14. The tubular member according to claim 13, characterized in that The tubular body is formed with a first channel and at least one second channel, wherein the second channel is used for the reinforcing wire to pass through; when the number of the second channels is plural, the plurality of second channels are arranged at intervals along the circumference of the first channel.

15. The tubular member according to claim 13, characterized in that The tubular member includes a first reinforcing wire and a second reinforcing wire, and the first reinforcing wire and the second reinforcing wire are both provided with the movable mechanism; when at least part of the tubular body is switched from the first state to the second state, if the first reinforcing wire is located on the outer side of the bend of the tubular body and the second reinforcing wire is located on the inner side of the bend of the tubular body, a section of the first reinforcing wire located outside the tubular body can extend into the tubular body, and the first reinforcing wire can drive the corresponding movable mechanism to move along the first direction; a section of the second reinforcing wire located inside the tubular body can extend out of the tubular body, and the movable mechanism corresponding to the second reinforcing wire can move along the second direction driven by the reset mechanism; when at least part of the tubular body is switched from the second state to the first state, a section of the first reinforcing wire located inside the tubular body can extend out of the tubular body, and the movable mechanism corresponding to the first reinforcing wire can move along the second direction driven by the reset mechanism; a section of the second reinforcing wire located outside the tubular body can extend into the tubular body, and the second reinforcing wire can drive the corresponding movable mechanism to move along the first direction; the bending degree of at least part of the tubular body in the first state is less than the bending degree of the tubular body in the second state.

16. A conveying system, characterized in that: include: Sheath; as well as A sheath core, wherein the sheath core passes through the sheath tube, and at least one of the sheath core and the sheath tube comprises the tubular member as described in any one of claims 13-15.

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