Method of installing a conveyor system and conveyor system

Abstract

The application relates to the field of medical devices, and discloses a mounting method of a delivery system and the delivery system, which comprises the following steps: mounting a blocking piece on the outer wall of an anchoring tube; making a first control wire pass through a hole, the first control wire having a first end and a second end, the second end of the first control wire being inserted into an opening of the hole and being taken out from another opening of the hole; making a second control wire pass through another hole, the second control wire having a third end and a fourth end, the third end comprising a limiting part, the fourth end of the second control wire being inserted into an opening of the other hole and being taken out from another opening of the hole; axially inserting a core wire into the inner space of the anchoring tube; pulling the second end of the first control wire and the fourth end of the second control wire, so that the first end of the first control wire and the third end of the second control wire are both inserted into the corresponding holes and clamped with the core wire; and rotating the blocking piece to block the two openings close to the limiting part in the two holes.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an installation method and delivery system for a delivery system. Background Technology

[0002] The mitral valve is the valve that allows blood to flow from the left atrium to the left ventricle during diastole. The human heart has four valves, and the mitral valve, located between the left atrium and left ventricle, allows blood to flow normally from the left atrium to the left ventricle during diastole and prevents blood from flowing back from the left ventricle to the left atrium during systole. Simply put, with each heartbeat, the mitral valve opens and closes to facilitate or prevent blood flow, ensuring the correct direction of blood flow.

[0003] The mitral valve consists of mitral leaflets, annulus, papillary muscles, and chordae tendineae, all of which work together to function in the heartbeat. The mitral leaflets are composed of anterior and posterior leaflets, and the commissural leaflet connecting them. The anterior and posterior leaflets, commonly referred to as the anterior and posterior leaflets, act as the "valve" between the atria and ventricles. Summary of the Invention

[0004] This invention discloses an installation method and a conveying system for a conveying system, which improves installation efficiency and convenience.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] In a first aspect, the present invention provides an installation method for a conveying system, comprising:

[0007] The sealing element is installed on the outer wall of the anchor tube, which has an internal space. The outer wall of the anchor tube is provided with four openings, which are connected to the internal space and form two channels. The two openings that connect to the same channel have different sizes.

[0008] The first control wire is inserted into a channel. The first control wire has a first end and a second end. The first end includes a limiting part. The second end of the first control wire is inserted into an opening of a channel and exits from another opening in the same channel.

[0009] The second control wire is inserted into another channel. The second control wire has a third end and a fourth end. The third end includes a limiting part. The fourth end of the second control wire is inserted into an opening in the other channel and exits from another opening in the same channel.

[0010] The core wire is inserted axially along the internal space of the anchor tube, ensuring that the core wire at least partially overlaps with the two channels of the anchor tube;

[0011] Pull the second end of the first control wire and the fourth end of the second control wire so that the first end of the first control wire and the third end of the second control wire both enter the corresponding channels and are locked with the core wire;

[0012] Rotate the sealing member to seal the two openings in the two channels that are close to the limit.

[0013] The following is a detailed description of the installation method of the conveying system provided by the present invention: First, the sealing element is installed on the outer wall of the anchoring tube. The anchoring tube has an internal space, which is provided for the subsequent installation of the core wire. However, at this time, the sealing element does not block the openings of the two channels. The four openings corresponding to the two channels are interconnected with the internal space of the anchoring tube. At this time, the four openings corresponding to the two channels are not blocked by the sealing element. That is to say, all four openings are in an open state to facilitate the subsequent installation of the first control wire and the second control wire. The two openings connecting the same channel have different sizes. This design makes it convenient for the control wire to be inserted and removed. Second, the two control wires are respectively inserted into different channels. The first control wire is inserted into one channel. The second end of the first control wire enters from one side opening of the anchoring tube and exits from the other side opening of the same channel. The third step involves threading the second control wire into another channel. The fourth end of the second control wire enters from one side of the anchor tube and exits from the other side of the same channel. The fourth step involves threading the core wire axially into the internal space of the anchor tube, with the axial direction parallel to the length of the anchor tube. During the threading process, the position and direction must be carefully adjusted to ensure that at least a portion of the core wire overlaps with the two channels of the anchor tube. This overlap provides the basis for subsequent clamping operations. The fifth step involves pulling the second end of the first control wire and the fourth end of the second control wire. As the pulling action proceeds, the first end of the first control wire with the limiting part and the third end of the second control wire with the limiting part will gradually move into the corresponding channel and eventually enter the corresponding channel, thereby clamping with the previously threaded and overlapping core wire. At this point, the two control wires and the core wire form a relatively stable fixed state inside. After completing the above operations, rotate the sealing component previously installed on the outer wall of the anchoring tube. Through its specific position and shape after rotation, it seals the two openings near the limiting part in the two channels, preventing the first end of the first control wire and / or the third end of the second control wire from protruding, thus preventing them from entangled in the cardiac tendineae during operation and interfering with the surgery. During installation, the control wire is installed first, followed by the core wire, to achieve locking. This connection method is easier to operate because there is no core wire limiting the anchoring tube during control wire installation, allowing for greater operating space and easier installation. Through the clamping of the control wire and core wire, and the cooperative installation method between the sealing component and the anchoring tube, a stable connection and fixation between the internal components of the anchoring tube can be achieved. This installation method is more convenient and faster, and the relative stability of the core wire and control wire ensures that the entire device maintains a relatively stable state during subsequent use, regardless of external interference or internal stress.

[0014] In some embodiments, the conveying system includes a clamping structure through which a second end of the first control wire passes through a circular hole at a free end of the clamping structure;

[0015] The fourth end of the second control wire passes through the circular hole at the other free end of the fixing clamp structure.

[0016] In some embodiments, the second end of the first control wire connected to the fixing clamp structure is inserted into the control tube assembly and then fixed to the control base after passing through the control handle.

[0017] In some embodiments, the fourth end of the second control wire connected to the fixing clamp structure is inserted into the control tube assembly, and after passing through the control handle, it is fixed to the control base.

[0018] In some embodiments, the control base is provided with a first tie rod and a second tie rod;

[0019] The second end of the first control wire is connected to the first pull rod, and the fourth end of the second control wire is connected to the second pull rod.

[0020] In some embodiments, the second end of the first control wire is inserted through a channel with a smaller opening size and exits through the same channel with a larger opening size.

[0021] In some embodiments, the fourth end of the second control wire is inserted through a smaller opening in another channel and exits through a larger opening in the same channel.

[0022] In some embodiments, the limiting part is spherical in shape, and the diameter of the limiting part is larger than the diameter of the body of the first control wire; the diameter of the limiting part is larger than the diameter of the body of the second control wire.

[0023] In some embodiments, the diameter of the limiting part ranges from 0.25mm to 0.32mm, and the diameter of the first control wire body ranges from 0.1mm to 0.2mm; the diameter of the limiting part ranges from 0.25mm to 0.32mm, and the diameter of the second control wire body ranges from 0.1mm to 0.2mm.

[0024] In some embodiments, the smaller diameter of the opening in one channel is equal to the smaller diameter of the opening in the other channel; the larger diameter of the opening in one channel is equal to the larger diameter of the opening in the other channel.

[0025] Secondly, the present invention provides a conveying system comprising:

[0026] An anchoring tube having a proximal end and a distal end, the anchoring tube having an internal space, the outer wall of the anchoring tube having four openings communicating with the internal space, the four openings communicating with the internal space and correspondingly forming two channels, the two openings communicating with the same channel having different sizes;

[0027] A fixing clip structure is detachably connected to the distal end of the anchoring tube;

[0028] A first control wire, the first control wire having a first end and a second end, the first end including a limiting part, the limiting part being located in one of the two channels;

[0029] A second control wire having a third end and a fourth end, the third end including a limiting portion located in another of the two channels;

[0030] The core wire is movably disposed in the internal space of the anchoring tube. When the core wire is located in the internal space, it is used to simultaneously engage the limiting portion at the first end and the limiting portion at the second end with the inner wall of the anchoring tube. Attached Figure Description

[0031] Figure 1 A schematic diagram of a conveying system provided in an embodiment of the present invention;

[0032] Figure 2 A schematic flowchart illustrating an installation method for a conveying system provided in an embodiment of the present invention;

[0033] Figure 3 This is a partial structural schematic diagram of a conveying system provided in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of a first control wire in a conveying system provided by an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of an anchoring pipe in a conveying system provided by an embodiment of the present invention;

[0036] Figure 6 For the corresponding Figure 5 Sectional view at point AA;

[0037] Figure 7 A schematic diagram showing the positional relationship between the control wire, the core wire, and the anchoring tube provided in an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the control wire retraction process provided in an embodiment of the present invention;

[0039] Figure 9This is a three-dimensional structural diagram of a sealing component in a conveying system provided in an embodiment of the present invention.

[0040] In the figure: 1-Fixing clamp structure; 11-Anchoring component; 12-Capturing element; 121-First capturing clamp; 122-Second capturing clamp; 2-Anchoring tube; 21-Internal space; 22-First channel; 221-First opening; 222-Second opening; 23-Second channel; 231-Third opening; 232-Fourth opening; 31-First control wire; 311-First end; 3111-Restriction part; 312-Second end; 313-Body; 32-Second control wire; 4-Core wire; 5-Sealing component; 51-Main body; 52-Plug; 6-Control handle; 7-Control tube assembly; 8-Control base; 81-First pull rod; 82-Second pull rod. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the embodiments of the present invention, "multiple" means two or more.

[0042] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0043] The direction of the rotational axis of an object such as a cylinder or tube is defined as the axial direction; the circumferential direction is the direction around the axis of the object (perpendicular to the axis and also perpendicular to the cross-sectional radius); the radial direction is along the diameter or radius. It is important to note that the term "end" appearing in terms such as "proximal end," "distal end," "one end," "the other end," "first end," "second end," "initial end," "end point," "both ends," "free end," "upper end," and "lower end" is not limited to the end head, endpoint, or end face, but also includes a portion extending axially and / or radially from the end head, endpoint, or end face on the element to which the end head, endpoint, or end face belongs. Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The conventional terminology used in this specification is for the purpose of describing particular embodiments only and should not be construed as limiting the invention.

[0044] In describing the system of the present invention, the proximal end generally refers to the portion close to the operator or body entrance, while the distal end refers to the portion away from the operator and deep inside the body.

[0045] First, let me introduce the application scenarios of this invention: Mitral regurgitation (MR) is the mainstream cause of mitral valve disease and the most common valvular heart disease. The China-DVD study on the epidemiology of heart valve disease in China shows that isolated MR accounts for one-quarter of patients, far exceeding other valvular diseases. MR patients experience severe clinical symptoms and eventually progress to heart failure; the 5-year hospitalization rate and mortality rate for untreated MR patients are as high as 90% and 50%, respectively. Therefore, intervention for MR is urgent. However, many MR patients cannot tolerate or are unwilling to undergo surgery due to advanced age, multiple comorbidities, etc. This invention is mainly used to treat patients with moderate to severe mitral regurgitation (MR), especially suitable for those with high risk or contraindications to surgery. Its application scenarios include primary MR (such as leaflet prolapse) and strictly selected secondary MR (such as functional regurgitation caused by heart failure).

[0046] Based on the above application scenarios, the structure of the conveying system using a fixed clamp structure will be described below: Figure 1 As shown, the conveying system includes a control handle 6, a control tube assembly 7, and a fixing clamp structure 1. The fixing clamp structure 1 is connected to the control handle 6 via the control tube assembly 7, establishing a connection between the control handle 6 and the fixing clamp structure 1. A control base 8 is mounted on the control handle 6. Operating the control base 8 allows for motion control of the fixing clamp structure 1, such as controlling the lifting or lowering of the capturing element 12 within the fixing clamp structure 1. Specifically, the structure also includes a control wire disposed within the control tube assembly 7 and the control handle 6. After the second end 312 of the control wire is connected to the fixing clamp structure 1, the second end 312 of the control wire enters through the control tube assembly 7 and connects to the control base 8. By operating the control base 8, the control wire can be controlled, thereby enabling the opening and closing control function of the capturing element 12 in the leaf-shaped fixing clamp structure 1.

[0047] For ease of understanding, in practical applications, when a user (such as a doctor) treats a patient, the user holds the control handle 6 and inserts the fixation clip structure 1 into the patient's body until it is precisely delivered to the heart valve, such as the mitral valve. Once the leaflet fixation clip structure 1 reaches the predetermined position, the user can open and close the clip by operating the control handle 6 to capture and fix the mitral valve. Specifically, this fixes the diseased mitral valve leaflet and the contralateral normal mitral valve leaflet together, forming a two-foramen mitral valve structure, thus ensuring the long-term normal functioning of the valve. After the fixation operation is completed, the leaflet fixation clip is separated from the control tube assembly 7. At this point, the leaflet fixation clip remains in the body as an implant, continuously maintaining the leaflet in its engaged position.

[0048] like Figure 2 As shown, the installation method of a conveying system provided in this embodiment of the invention specifically includes:

[0049] S1: The sealing element 5 is installed on the outer wall of the anchor tube 2. The anchor tube 2 has an internal space 21. The outer wall of the anchor tube 2 is provided with four openings. The four openings are connected to the internal space 21 and form two channels. The two openings connected to the same channel have different sizes. The sealing element 5 is installed on the outer wall of the anchor tube 2. The anchor tube 2 has an internal space 21, which is provided for the subsequent installation of the core wire 4. However, at this time, the sealing element 5 does not block the openings of the two channels. The four openings corresponding to these two channels are connected to the internal space 21 of the anchor tube 2. At this time, the four openings corresponding to the two channels will not be blocked by the sealing element 5. That is to say, all four openings are in an open state to facilitate the subsequent installation of the first control wire 31 and the second control wire 32. The two openings connected to the same channel have different sizes. This design makes it convenient for the control wire to be inserted and removed.

[0050] S2: The first control wire 31 is inserted into a channel. The first control wire 31 has a first end 311 and a second end 312. The first end 311 includes a limiting part 3111. The second end 312 of the first control wire 31 is inserted into the opening of the channel and exits from another opening in the same channel. The two control wires are respectively inserted into different channels. The first control wire 31 is inserted into the first channel. The second end 312 of the first control wire 31 is inserted into one side opening of the anchor tube 2 and exits from the other side opening in the same channel.

[0051] S3: The second control wire 32 is inserted into another channel. The second control wire 32 has a third end and a fourth end. The third end includes a limiting part 3111. The fourth end of the second control wire 32 is inserted into an opening in the other channel and exits from another opening in the same channel. The second control wire 32 is inserted into an opening on one side of the anchor tube 2 and exits from an opening on the other side of the same channel.

[0052] S4: Insert the core wire 4 axially into the internal space 21 of the anchoring tube 2, ensuring that at least part of the core wire 4 overlaps with the two channels of the anchoring tube 2; insert the core wire 4 axially into the internal space 21 of the anchoring tube 2, the axial direction being parallel to the length direction of the anchoring tube 2. During insertion, carefully adjust the position and direction to ensure that at least part of the core wire 4 overlaps with the two channels of the anchoring tube 2. Such overlap provides the basis for subsequent clamping operations.

[0053] S5: Pull the second end 312 of the first control wire 31 and the fourth end of the second control wire 32 so that the first end 311 of the first control wire 31 and the third end of the second control wire 32 both enter the corresponding channels and are locked with the core wire 4; Pull the second end 312 of the first control wire 31 and the fourth end of the second control wire 32 respectively. As the pulling action proceeds, the first end 311 of the first control wire 31 with the limiting part 3111 and the third end of the second control wire 32 with the limiting part 3111 will gradually move into the corresponding channels and eventually enter the corresponding channels, thereby locking with the core wire 4 that has been inserted and has an overlapping part. At this time, the two control wires and the core wire 4 form a relatively stable fixed state inside.

[0054] S6: Rotate the sealing member 5 to seal the two openings in the two channels near the limit. The sealing member 5, previously installed on the outer wall of the anchoring tube 2, seals the two openings in the two channels near the limit by changing its specific position and shape after rotation. This prevents the first end 311 of the first control wire 31 and / or the third end of the second control wire 32 from protruding, thereby preventing them from entangled in the cardiac tendineae during operation and interfering with the surgery.

[0055] It should be noted that during installation, the control wire is installed first, followed by the core wire 4 to achieve locking. This connection method is easier to operate because when installing the control wire, there is no constraint from the core wire 4 within the anchoring tube 2, allowing for greater operating space and easier installation. Through the clamping of the control wire and core wire 4, and the cooperative installation of the sealing component 5 and the anchoring tube 2, a stable connection and fixation between the internal components of the anchoring tube 2 can be achieved. This installation method is more convenient and faster, and the relative stability of the core wire 4 and the control wire ensures that the entire device maintains a relatively stable state during subsequent use, regardless of external interference or internal stress.

[0056] like Figure 3 As shown, Figure 3 For the corresponding Figure 1 A partial structural diagram of the conveying system of the fixed clamp structure 1 is shown. The fixed clamp structure 1 includes an anchoring element 11 and a capturing element 12. The capturing element 12 is closably mounted on the anchoring element 11, and the anchoring element 11 is detachably connected to the distal end of the anchoring tube 2. The capturing element 12 includes a first capturing clamp 121 and a second capturing clamp 122, which can be controlled separately. In this conveying system of the fixed clamp structure 1, the second end 312 of the first control wire 31 passes through a circular hole at one free end of the fixed clamp structure 1; that is, the second end 312 of the first control wire 31 passes through a circular hole at the free end of the first capturing clamp 121. The fourth end of the second control wire 32 passes through a circular hole at the other free end of the fixed clamp structure 1; that is, the fourth end of the second control wire 32 passes through a circular hole at the free end of the second capturing clamp 122. Through the separate operation of the first control wire 31 and the second control wire 32, the first capturing clamp 121 and the second capturing clamp 122 can be controlled separately.

[0057] Continue to refer to Figure 3 The anchor tube 2 has a proximal end and a distal end. The fixation clip structure 1 is detachably connected to the distal end of the anchor tube 2. The anchor tube 2 is separated from the fixation clip structure 1 and remains in the body as an implant, and is held in the engagement position together with the leaflet.

[0058] Continue to refer to Figure 3 Please refer to them together. Figures 4-6 , Figure 3 It includes two control wires, Figure 4 The diagram shows the structure of the first control wire 31. The structure of the second control wire 32 is the same as that of the first control wire 31, and will not be described again here. The two control wires are the first control wire 31 and the second control wire 32, respectively. The two control wires extend into the anchoring tube 2 through the control tube assembly 7. The anchoring tube 2 has an internal space 21, and the axis of the internal space 21 is parallel to the length direction of the anchoring tube 2. Continue to refer to... Figure 6The anchoring tube 2 has two channels, a first channel 22 and a second channel 23, both communicating with the internal space 21. The first channel 22 has two openings, a first opening 221 and a second opening 222. For example, the areas of the first opening 221 and the second opening 222 can be equal; or the area of ​​the first opening 221 can be greater than the area of ​​the second opening 222. Similarly, the second channel 23 has a third opening 231 and a fourth opening 232. For example, the area of ​​the third opening 231 can be equal to the area of ​​the fourth opening 232; or the area of ​​the third opening 231 can be greater than the area of ​​the fourth opening 232. Figure 6 As can be seen, on side I, a first opening 221 corresponding to the first channel 22 and a fourth opening 232 corresponding to the second channel 23 are respectively provided; on side II, a second opening 222 corresponding to the first channel 22 and a third opening 231 corresponding to the second channel 23 are respectively provided; as shown Figure 4 As shown, the first control wire 31 of the two control wires each has a first end 311 and a second end 312. The first end 311 includes a limiting part 3111. The first control wire 31 is located in the first channel 22, and the second control wire 32 is located in the second channel 23. The size of the limiting part 3111 of the first control wire 31 located in the first channel 22 is less than or equal to the size of the second opening 222, and the size of the limiting part 3111 of the second control wire 32 located in the second channel 23 is less than or equal to the size of the fourth opening 232. The two control wires are respectively connected to the capturing element 12 of the fixed clamp structure 1. Specifically, the first control wire 31 is connected to the first capturing clamp 121, and the second control wire 32 is connected to the second capturing clamp 122. Thus, by operating different control wires, the control of the first capturing clamp 121 and the second capturing clamp 122 can be realized.

[0059] Continue to refer to Figure 1 The control base is provided with a first pull rod 81 and a second pull rod 82. The second end 312 of the first control wire 31 is connected to the first pull rod 81, and the fourth end of the second control wire 32 is connected to the second pull rod 82. By operating the first control wire 31 controlled by the first pull rod 81, the action of the first capture clip 121 can be controlled. By operating the second control wire 32 controlled by the second pull rod 82, the action of the second capture clip 122 can be controlled.

[0060] like Figure 7 and Figure 8 As shown, please refer to the following: Figure 6The internal space 21 of the anchor tube 2 is used to install the core wire 4, which is movably disposed within the internal space 21 of the anchor tube 2. When the core wire 4 is located in the internal space 21, the farthest distance between the outer surface of the core wire 4 and the inner wall of the first channel 22 is less than the limiting portion 3111 of the first control wire 31, and the farthest distance between the outer surface of the core wire 4 and the inner wall of the second channel 23 is less than the limiting portion 3111 of the second control wire 32. The second end 312 of the first control wire 31 is inserted into the first channel 22 through the smaller opening and exits through the first channel 22 through the larger opening; the fourth end of the second control wire 32 is inserted into the second channel 23 through the smaller opening and exits through the second channel 23 through the larger opening.

[0061] This invention provides an installation method for a delivery system. The delivery system, consisting of a clamping structure 1 and an anchoring tube 2, comprises a clamping structure 1 and an anchoring tube 2. The anchoring tube 2 has a proximal end and a distal end, which are positioned opposite each other. The proximal end is typically the portion near the operator or the body entrance, while the distal end is the portion extending into the body away from the operator. The distal end of the anchoring tube 2 is detachably connected to the clamping structure 1. This allows the clamping structure 1 to be fixed to the valve leaflet and left in the patient's body simply by separating the clamping structure 1 from the anchoring tube 2 and removing the anchoring tube 2 from the patient's body. The anchoring tube 2 has an internal space 21, the axis of which is parallel to the length of the anchoring tube 2. The internal space 21 accommodates a core wire 4, and the anchoring of the tube 2 is achieved through the movement of the core wire 4. It is connected to or separated from the fixing clamp structure 1; the anchoring tube 2 is also provided with a first channel 22 and a second channel 23, both of which are connected to the internal space 21. The first channel 22 and the second channel 23 are respectively used to accommodate two control wires. The two control wires control the opening and closing of the first capture clamp 121 or the second capture clamp 122 in the fixing clamp structure 1. The specific positions and installation and fixing methods of the core wire 4 and the control wire are described in detail below. The second end 312 of the first control wire 31 located in the first channel passes through the second opening 222 of the first channel 22 and exits through the first opening 221. Similarly, the fourth end of the second control wire 32 located in the second channel passes through the fourth opening 232 of the second channel 23 and exits through the third opening 231. Specifically, when installing the first control wire 31 and the second control wire 32, since the size of the limiting part 3111 in the first channel 22 is smaller than the size of the second opening 222, the second end 312 of the first control wire 31 can be easily and conveniently inserted through the second opening 222 and exited through the first opening 221. Then, the first control wire 31 is passed through the opening at the free end of the first capturing clamp 121 in the capturing element 12 to achieve relative fixation with the capturing element 12, thus completing the installation of the first control wire 31 in the first channel 22. The installation of the second control wire 32 adopts the same installation method as described above, and will not be repeated here. After the first control wire 31 and the second control wire 32 are installed, the core wire 4 is inserted into the internal space 21, and then the control wire is tightened to lock the limiting parts 3111 of the two control wires. Through the simple contact between the core wire 4 and the limiting parts 3111 of the control wires, the relative fixation of the control wire, the core wire 4 and the anchoring tube 2 is made easier, effectively reducing the installation cost.

[0062] like Figure 7 and Figure 8 As shown, please refer to the following: Figure 6The sealing element 5 is movably sleeved on the outer surface of the anchoring tube 2 to at least seal the second opening 222 and the fourth opening 232. It is understood that the anchoring tube 2 has an internal space 21, a first channel 22, and a second channel 23. When assembling the system for conveying and fixing the clamp structure 1 provided in this embodiment of the invention, the sealing element 5 is first installed on the outer wall of the anchoring tube 2, but at this time, the sealing element 5 does not seal the openings of the first channel 22 and the second channel 23, facilitating the installation of the first control wire 31 and the second control wire 32; in the second step, the second end 312 of the first control wire of the two control wires passes through the second opening 222 on the II side of the anchoring tube 2. The first control wire 312 is inserted through the first opening 221 on side I and exits through the third opening 231 on side II. The second end 312 of the second control wire 32 is inserted through the fourth opening 232 on side I of the anchoring tube 2 and exits through the third opening 231 on side II. The core wire 4 is axially inserted into the internal space 21 of the anchoring tube 2, with one end connected to the anchoring member 11 and the other end fixed inside the control handle 6. The second control wire 32 is tightened so that the limiting part 3111 of the first end 311 of the first control wire 31 is inserted into the anchoring tube 2, and the limiting part 3111 of the third end of the second control wire 32 is also inserted into the anchoring tube 2. Inside, at this time, the sealing member 5 is rotated or moved so that the plug of the sealing member 5 blocks the small holes on the I and II sides of the anchoring member 11, that is, the second opening 222 of the first channel 22 and the fourth opening 232 of the second channel 23 are blocked, preventing the first end 311 of the first control wire 31 and the third end of the second control wire 32 from protruding from the second opening 222 and the fourth opening 232 respectively, thereby entanglement of the cardiac tendineae and interference with the operation; in the sixth step, the free end of the first capture clamp 121 away from the anchoring member 11 is connected to the first control wire 31. The second control wire 31 is connected to the second control wire 32. The second end 312 of the first control wire 31 is first passed through the round hole at the far end of the first capture clip 121, then passed into the control tube assembly 7, and after passing out of the control handle 6, it is fixed to the first pull rod 81 of the control base 8. The third step is to connect the free end of the second capture clip 122 away from the anchor 11 to the second control wire. The fourth end of the second control wire 32 is first passed through the round hole at the far end of the second capture clip 122, then passed into the control tube assembly 7, and after passing out of the control handle 6, it is fixed to the second pull rod 82 of the control base 8.

[0063] For example, continue to refer to Figure 8 The shape of the limiting part 3111 can be spherical or polygonal, and the specific shape is not limited. When the shape of the limiting part 3111 is spherical, the diameter of the limiting part 3111 must be greater than the diameter of the control wire body 313. When the shape of the limiting part 3111 is polygonal, the minimum diameter of the limiting part 3111 must be greater than or equal to the diameter of the control wire body 313.

[0064] The diameter of the first opening 221 ranges from 0.45mm to 0.55mm. For example, the diameter of the first opening 221 is 0.45mm, 0.46mm, 0.47mm, 0.48mm, 0.49mm, 0.50mm, 0.51mm, 0.52mm, 0.53mm, 0.54mm, or 0.55mm. The diameter of the second opening 222 ranges from 0.35mm to 0.42mm. For example, the diameter of the second opening 222 is 0.35mm, 0.36mm, 0.37mm, 0.38mm, 0.39mm, 0.40mm, 0.41mm, or 0.42mm. The diameter of the third opening 231 ranges from 0.45mm to 0.55mm, for example, the diameter of the third opening 231 is 0.45mm, 0.46mm, 0.47mm, 0.48mm, 0.49mm, 0.50mm, 0.51mm, 0.52mm, 0.53mm, 0.54mm, or 0.55mm; the diameter of the fourth opening 232 ranges from 0.35mm to 0.42mm, for example, the diameter of the fourth opening 232 is 0.35mm, 0.36mm, 0.37mm, 0.38mm, 0.39mm, 0.40mm, 0.41mm, or 0.42mm. Of course, for ease of processing, the diameter of the first opening 221 is equal to the diameter of the third opening 231, and the diameter of the second opening 222 is equal to the diameter of the fourth opening 232. Of course, the diameter of the first opening 221 and the diameter of the third opening 231 may not be equal, and the diameter of the second opening 222 and the diameter of the fourth opening 232 may not be equal. To ensure smooth installation of the control wire 3, the diameter of the limiting part 3111 is at least smaller than that of the second opening 222 and the fourth opening 232. Therefore, the diameter of the limiting part 3111 is in the range of 0.25mm-0.32mm, for example, 0.25mm, 0.26mm, 0.27mm, 0.28mm, 0.29mm, 0.30mm, 0.31mm or 0.32mm. Of course, it is understandable that the diameter of the control wire 3 is smaller than the diameter of the limiting part 311, so the diameter range of the control wire 3 is 0.1mm-0.2mm. For example, the diameter of the control wire 3 is 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm or 0.20mm.

[0065] like Figure 9As shown, for example, the sealing member 5 includes a main body 51 and two plugs 52. The main body 51 is fitted to the outer surface of the anchor tube 2. The two plugs 52 are both located at the same port edge of the main body 51. When the limiting parts 3111 of the first control wire 31 and the second control wire 32 are both located in the first channel 22 and the second channel 23, one of the plugs 52 overlaps at least partially with the area of ​​the second opening 222, and the other plug 52 overlaps at least partially with the area of ​​the fourth opening 232, ensuring that the remaining areas of the second opening 222 and the fourth opening 232 can prevent the limiting parts 311 from detaching from their respective channels.

[0066] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A method for installing a conveying system, characterized in that, include: The sealing element is installed on the outer wall of the anchor tube, which has an internal space. The outer wall of the anchor tube is provided with four openings, which are connected to the internal space and form two channels. The two openings that connect to the same channel have different sizes. The first control wire is inserted into a channel. The first control wire has a first end and a second end. The first end includes a limiting part. The second end of the first control wire is inserted into an opening of a channel and exits from another opening in the same channel. The second control wire is inserted into another channel. The second control wire has a third end and a fourth end. The third end includes a limiting portion. The fourth end of the second control wire is inserted through an opening in the other channel and exits through another opening in the same channel. The core wire is inserted axially along the internal space of the anchor tube, ensuring that the core wire at least partially overlaps with the two channels of the anchor tube. Pull the second end of the first control wire and the fourth end of the second control wire so that the first end of the first control wire and the third end of the second control wire both enter the corresponding channels and are locked with the core wire; Rotate the sealing member to seal the two openings in the two channels near the limiting part.

2. The method according to claim 1, characterized in that, The conveying system includes a fixed clamp structure, and the second end of the first control wire passes through a circular hole at a free end of the fixed clamp structure; The fourth end of the second control wire passes through the circular hole at the other free end of the fixing clamp structure.

3. The method according to claim 2, characterized in that, The second end of the first control wire, which is connected to the fixing clamp structure, is inserted into the control tube assembly and then fixed to the control base after passing through the control handle.

4. The method according to claim 2 or 3, characterized in that, The fourth end of the second control wire, which is connected to the fixing clamp structure, is inserted into the control tube assembly and then fixed to the control base after passing through the control handle.

5. The method according to claim 4, characterized in that, The control base is provided with a first tie rod and a second tie rod; The second end of the first control wire is connected to the first pull rod, and the fourth end of the second control wire is connected to the second pull rod.

6. The method according to claim 1, characterized in that, The second end of the first control wire is inserted through a channel with a smaller opening size and exits through the same channel with a larger opening size.

7. The method according to claim 6, characterized in that, The fourth end of the second control wire is inserted into another channel with a smaller opening size and exits from the same channel with a larger opening size.

8. The method according to claim 7, characterized in that, The limiting part is spherical in shape, and its diameter is larger than the diameter of the body of the first control wire; the diameter of the limiting part is larger than the diameter of the body of the second control wire.

9. The method according to claim 8, characterized in that, The diameter of the limiting part ranges from 0.25mm to 0.32mm, and the diameter of the first control wire body ranges from 0.1mm to 0.2mm; the diameter of the limiting part ranges from 0.25mm to 0.32mm, and the diameter of the second control wire body ranges from 0.1mm to 0.2mm.

10. A conveying system, characterized in that, include: An anchoring tube having a proximal end and a distal end, the anchoring tube having an internal space, the outer wall of the anchoring tube having four openings communicating with the internal space, the four openings communicating with the internal space and correspondingly forming two channels, the two openings communicating with the same channel having different sizes; A fixing clip structure is detachably connected to the distal end of the anchoring tube; A first control wire, the first control wire having a first end and a second end, the first end including a limiting part, the limiting part being located in one of the two channels; A second control wire having a third end and a fourth end, the third end including a limiting portion located in another of the two channels; The core wire is movably disposed in the internal space of the anchor tube. When the core wire is located in the internal space, it is used to simultaneously engage the limiting portion at the first end and the limiting portion at the second end with the inner wall of the anchor tube. The core wire at least partially overlaps with the two channels of the anchor tube.

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