Interventional delivery system

Abstract

The application relates to an interventional delivery system, which has opposite distal and proximal ends and an axial direction extending between the distal and proximal ends, and comprises a control handle, the inside of the control handle being provided with a mounting chamber, and the surface of the control handle being provided with an operation opening communicating with the mounting chamber; and a first cover, which is movably connected to the control handle to close or open the operation opening. The control handle of the interventional delivery system is relatively neat in appearance, pipeline winding can be avoided, and packaging is facilitated.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an interventional delivery system. Background Technology

[0002] An interventional delivery system for artificial implants includes a control handle located at the proximal end of the delivery system for operation and a catheter assembly extending distally from the control handle. The catheter assembly typically includes multiple relatively movable tubes or rods, wires, etc., used to work together to complete the delivery, posture adjustment, release, or retrieval of the artificial implant.

[0003] Existing interventional delivery systems require connection to external equipment during preoperative preparation or interventional procedures for purposes such as detection, perfusion, or signal acquisition, thus further structural optimization is still needed. Summary of the Invention

[0004] This application provides an interventional delivery system that further improves the cleanliness of the control handle and makes it easier to connect to external pipelines.

[0005] This application provides an interventional delivery system having opposing distal and proximal ends and an axial extension between the distal and proximal ends, the interventional delivery system comprising: A control handle, wherein the control handle has an internal mounting chamber and an operating port communicating with the mounting chamber is provided on the surface of the control handle; A first cover is movably connected to the control handle to close or open the operating port.

[0006] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0007] Optionally, the installation method of the first shield and the control handle is selected from at least one of sliding connection, rotational connection, and detachable connection.

[0008] Optionally, the first cover has a snap-fit ​​that mates with the control handle; The first shielding cover is sealed to the operating port.

[0009] Optionally, of the proximal and distal sides of the first shielding cover, one side is a hinged mounting side and the other side is a freely flip-up side. The free-flipping side has a force-applying part that protrudes from the outer surface of the control handle.

[0010] Optionally, the intervention delivery system further includes: The conduit assembly includes at least one fitting, the proximal end of which extends into the mounting chamber, and the proximal end of the fitting is provided with a pipe fitting located within the mounting chamber, the location of which is exposed at the operating port.

[0011] Optionally, the conduit assembly includes at least two tubing components, one inner and one outer, wherein one of the two adjacent tubing components is the outer tube and the other is the inner tube, and there is a radial gap between them. The outer tube is provided with the pipe joint at its proximal end. The pipe joint is slidably and sealingly fitted outside the inner tube. The pipe joint has an interface for connecting external devices, and the interface is in communication with the radial gap. Of the two adjacent pipe fittings, at least one pipe fitting is axially slidably fitted relative to the control handle, and the operating port is strip-shaped with a length adapted to the stroke of the pipe fitting.

[0012] Optionally, the pipe joint is equipped with a one-way valve core, which only allows fluid to flow from the interface into the radial gap.

[0013] Optionally, the catheter assembly includes a core tube and an outer sheath that are sequentially fitted from the inside out, and the proximal end of the outer sheath is provided with a first tubing connector; The distal end of the core tube is used to load the artificial implant, and the outer sheath slides relative to the core tube to enclose or expose the artificial implant; The control handle includes: A support body, a portion of which is a tubular section, with the proximal end of the outer sheath located within the tubular section. The sidewall of the tubular section has a clearance opening to expose the first pipeline connector. The outer casing is located on the outer periphery of the tubular portion, and the operating port is opened in the outer casing.

[0014] Optionally, the catheter assembly further includes a sheath located around the outer sheath, the sheath being fixedly connected to the control handle, and a second tubing connector located at the proximal end of the sheath, the second tubing connector being located at the distal end of the tubular portion.

[0015] Optionally, the edge of the clearance opening is provided with an outwardly extending radially outwardly turned portion; The first cover has a side extending into the operating port. The side and the control handle are provided with a positioning structure that cooperates with each other. The positioning structure consists of a slot and a rib that cooperate with each other, one of which is provided on the side and the other is provided on the inner side wall of the outwardly turned part.

[0016] Optionally, the catheter assembly further includes; An inner sheath is slidably fitted onto the outside of the outer sheath tube. The inner sheath includes a handle and a tube extending distally from the handle. The handle has a through-hole that communicates with the interior of the tube. The handle is also provided with: The third pipe joint is connected to the through port; A second cover is movably connected to the handle to cover or expose the third conduit connector.

[0017] Optionally, the outer periphery of the handle has a settling zone, the third pipe joint is located within the settling zone, and the second shielding cover is disposed on the settling zone.

[0018] The intervention delivery system of this application improves the appearance and makes the connection of external pipelines easier by structural improvements to the control handle, and can also expand the applicable scenarios accordingly. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the interventional delivery system in one embodiment of this application; Figure 2 for Figure 1 A schematic diagram of the control handle (with the first shielding cover in the separated state) in the intervention delivery system; Figure 3 for Figure 1 A schematic diagram of the control handle (with the first shield in a flipped state) in the interventional delivery system; Figure 4 for Figure 2 An exploded view of the distal part of the control handle; Figure 5 for Figure 4 Further exploded diagram of relevant components; Figure 6 for Figure 1 A schematic diagram of the catheter assembly in an interventional delivery system; Figure 7 for Figure 6 Cross-sectional view of the middle conduit assembly at the control handle location; Figure 8 for Figure 7 Enlarged view of the pipe joint in section 1; Figure 9 for Figure 7 Enlarged view of another pipe joint and related parts on its proximal side; Figure 10 for Figure 1 A cross-sectional view of the control handle in the interventional delivery system; Figure 11 This is a schematic diagram of the intervention delivery system (with the second shielding cover in the initial position) in one embodiment of this application; Figure 12 for Figure 11 A schematic diagram of the structure after the second cover is flipped open.

[0021] The component labels are as follows: 100. First handle; 110. Support body; 111. Tubular part; 112. Clearance opening; 113. Outwardly turned part; 114. Slot; 115. Guide groove; 120. Outer casing; 121. Operating port; 130. First shielding cover; 131. Hinge mounting side; 132. Freely flipping side; 133. Force-applying part; 134. Buckle; 135. Side; 136. Protruding rib; 140. Drive sleeve; 150. Connectors; 160. Wearing a hat; 200. Second handle; 300. Catheter assembly; 310. Core tube; 311. Guide head; 312. Tailstock; 320. Outer sheath; 321. First pipeline joint; 322. Loading section; 323. Cylinder body; 324. Sliding seat; 330. Sheath; 331. Second pipe fitting; 332. Interface; 333. One-way valve core; 334. Sealing ring; 340. Inner sheath; 341. Handle; 342. Tube body; 343. Second shield; 344. Third pipe joint; 345. External pipe; 400. Artificial implants. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level (or in a usage state, or from a certain viewpoint in the drawing) than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level (or in a usage state, or from a certain viewpoint in the drawing) than the second feature.

[0026] When used to indicate direction, the proximal end generally refers to the side closest to the operator (e.g., a doctor), and the distal end is the side relatively far away. Along the interventional path, each component itself has a relative distal and proximal end. Theoretically, when the catheter assembly and control handle are fully straightened, the straight line between the proximal and distal ends determines the axis, and correspondingly, the radial direction perpendicular to the axis and the circumferential direction arranged around the axis are also determined. When used to refer to a structure, the "end" in the text indicates the endpoint of the structure or a point or region in that lateral direction, or a specific structure connected to that point or region.

[0027] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0028] This manual describes several artificial implants and interventional delivery systems for their use. The delivery system includes a control handle and a catheter assembly. The catheter assembly includes multiple receivers, the distal ends of which cooperate to operate the artificial implant, such as releasing, retrieving, locking in position, and adjusting its spatial orientation. Each receiver can be a hollow tube, a solid rod, a flexible wire, or a combination of these. There are multiple receivers, and at least two (taking the proximal end as an example) can slide relative to each other axially or rotate relative to each other about an axial direction. The force-applying components on the control handle used to operate each receiver (the parts directly contacted by the user) can be directly fixed to the corresponding receiver or driven by threads, racks, or other methods.

[0029] There are no strict limitations on the application sites and structures of artificial implants. For example, artificial implants can include devices for replacing and repairing heart valve diseases, as well as vascular stents. In some illustrations or texts, artificial implants are described using artificial heart valves as an example. Artificial heart valves generally include a deformable stent and leaflets connected within the stent. The stent is cylindrical in shape with a perforated mesh structure on its side walls. Unless otherwise stated, the shape or size of the mesh structure is not strictly limited. The stent contains blood flow channels, and multiple leaflets work together to control the opening and closing of these channels. For positioning within the body, positioning structures that can interact with surrounding native tissues can be placed around the stent, such as anchors or arms. To prevent leakage, skirts or anti-leakage materials can be placed on the inner and / or outer sides of the stent.

[0030] Depending on the release mode, the stent is made of different materials, such as nickel-titanium alloy with shape memory that can expand in the body, or stainless steel material that can be released by ball expansion. The stent itself can be formed by cutting tubes or weaving wires, and the leaflets can be connected to the stent by stitching, bonding or integral molding.

[0031] Taking a self-expanding stent as an example, its release and retrieval can be controlled by the outer sheath surrounding the stent. The control is adjusted according to the different parts of the stent exposed in the outer sheath. It can also be controlled by a pull wire, which passes through the structural gaps (or wire hole structure) of the stent. The degree of stent expansion can be changed by adjusting the tension of the pull wire with the control handle. When the pull wire is pulled away from the stent, the stent is allowed to be fully released. Of course, the control of the pull wire is also accomplished by the various control mechanisms in the catheter assembly.

[0032] Artificial implants typically have a connecting structure that works with the catheter assembly to define their positions and prevent unnecessary displacement during delivery. The artificial implant is in a radially compressed state, i.e., a loaded state, when it is inserted into the body. After being released from the confinement of the catheter assembly and radially expanded, it is in a released state. Unless otherwise specified, the shape of the artificial implant is understood as the released state, without considering local deformation caused by the pressure of surrounding tissues.

[0033] Due to the complexity of the internal structure, the catheter assembly often requires bending operations. The corresponding bending device can be a tube or wire, with the distal end acting on the component to be bent, and the proximal end operated by a control handle to adjust the bending range or direction.

[0034] See Figure 1 One embodiment of this application provides an interventional delivery system having a distal end and a proximal end, as well as an axis extending between the distal end and the proximal end. In this context, the proximal end generally refers to the side adjacent to the operator (e.g., a physician), and the distal end is the side relatively far away. Along the interventional path, each component itself has a distal end and a proximal end. Theoretically, when the catheter assembly and control handle are fully straightened, the straight line between the proximal end and the distal end determines the axis. In the figure, the X direction points from the proximal end to the distal end, which also determines the radial direction perpendicular to the axis and the circumferential direction arranged around the axis (direction C in the figure). When used to refer to a structure, the term "end" in this context means the endpoint of the structure or a point or region in that lateral direction, or a specific structure connected to that point or region.

[0035] Combination Figures 2-3 The intervention delivery system of this embodiment has a distal end and a proximal end, and an axial direction extending between the distal end and the proximal end, specifically including: The control handle has an internal mounting chamber and an operating port 121 communicating with the mounting chamber on its surface. A first cover 130 is movably connected to a control handle to close or open the operating port 121.

[0036] This embodiment, by setting up an operation port 121 and a corresponding first cover 130, can expose the internal structure of the control handle when the first cover 130 is opened. This facilitates operations such as venting, disassembling, replacing parts, observing the status, or connecting external devices to the handle. It also allows for rapid handling in case of abnormalities, ensuring the smooth progress of the surgery. After the first cover 130 closes the operation port 121, the control handle has a relatively neat appearance, which can avoid the tangling of tubing and make it easier to package.

[0037] The intervention delivery system may also include a catheter assembly 300, which includes at least one fitting with its proximal end extending into the installation chamber. The proximal end of the fitting is provided with a pipe fitting located within the installation chamber, and the location of the pipe fitting is exposed at the operating port 121.

[0038] The control handle may include a first handle 100 and a second handle 200, which are in a relative engagement state (e.g., Figure 1 As shown), the second handle 200 can also slide towards the proximal end relative to the first handle 100, that is, the two can enter a separated state to achieve the corresponding function. Of course, the first handle 100 and the second handle 200 can also adopt an integral structure, that is, the two are positioned and matched along the axial direction.

[0039] The control handle has a partial housing 120, and an operation port 121 is opened in the housing 120. A first cover 130 is fitted at the operation port 121. The first cover 130 is movably connected to the control handle to close or open the operation port 121.

[0040] Pipe fittings can be used to connect external pipes, pumps, valves and other devices, such as for perfusion, sampling and preoperative air exhaust. In the prior art, in order to achieve the relevant functions, the control handle is generally equipped with an extension tube. One end of the extension tube extends into the installation chamber and connects to the corresponding fitting, while the other end of the extension tube is redundant outside the control handle. On the one hand, this affects the neatness of the appearance, and on the other hand, multiple extension tubes may interfere with each other and with external devices, which is not conducive to operation.

[0041] The first cover 130 is detachably connected to the control handle. When it is necessary to open the operation port 121, the first cover 130 can be removed directly. Alternatively, the first cover 130 can be rotated or slidably connected to the control handle. When it is necessary to open the operation port 121, the position of the first cover 130 can be adjusted to open the operation port 121.

[0042] Taking a rotatable connection as an example, the proximal side of the first cover 130 is the hinged mounting side 131, and the distal side is the freely rotating side 132. For ease of operation, the freely rotating side 132 has a force-applying part 133 that protrudes outward from the outer surface of the control handle. After the first cover 130 closes the operation port 121, the force-applying part 133 protrudes or flips outward relative to the outer surface of the control handle to facilitate gripping and applying force. Except for the force-applying part 133, the rest of the first cover 130 is at the same height or smoothly transitions to the outer surface of the adjacent part of the control handle.

[0043] In some preferred embodiments, the first cover 130 is sealed to the operating port 121. For example, at least a portion of the first cover 130 may extend into the operating port 121 and seal to the inner edge of the operating port 121. The first cover 130 may be sealed using an elastic material or a sealing ring at the sealing part.

[0044] After the first cover 130 closes the operating port 121, in order to maintain the current state and avoid unexpected misalignment or detachment, an anti-detachment structure can be provided between the first cover 130 and the control handle. For example, the free-flipping side 132 has a buckle 134 that cooperates with the control handle. The buckle 134 maintains the position of the first cover 130 by its own elastic deformation and tension with the inner edge of the operating port 121, or by extending into the corresponding slot.

[0045] To further limit the movement and ensure a sealing effect, the first cover 130 has a side 135 extending into the operating port 121, and the side 135 and the control handle have a mutually cooperating positioning structure. For example, the control handle has a slot 114, and the side 135 has a rib 136 that can be inserted into the slot 114.

[0046] The conduit assembly 300 includes at least two tubular components, one inner and one outer, which are adjacent to each other. One of them is the outer tube and the other is the inner tube, with a radial gap between them. The proximal end of the outer tube is provided with a pipe joint, which is slidably and sealed outside the inner tube. The pipe joint has an interface for connecting external devices, and the interface communicates with the radial gap between the outer tube and the inner tube.

[0047] Combination Figures 4-7 In one embodiment, the conduit assembly 300 includes multiple tubing components, each of which is connected to the control handle using one of the following connection methods: Fixed connection; or Axial sliding and circumferentially limiting connection; or It is a sliding connection along the axial direction and a rotating connection in the circumferential direction.

[0048] For example, multiple tubes include a core tube 310 and an outer sheath tube 320, which are sequentially fitted from the inside out. The distal end of the core tube 310 is used to load the artificial implant. The outer sheath tube 320 can slide relative to the core tube 310. The distal end of the core tube 310 has a guide head 311, and the artificial implant is located on the proximal side of the guide head. The distal part of the outer sheath tube 320 serves as a loading section 322 to wrap the artificial implant. When the artificial implant is released, the outer sheath tube 320 slides relative to the core tube 310 and the artificial implant, exposing the artificial implant.

[0049] In other embodiments, the catheter assembly 300 further includes a sheath 330 located around the outer sheath 320, wherein the core tube 310 and the outer sheath 320 are configured to move in a controlled manner relative to a control handle, and the proximal end of the sheath 330 is secured to the first handle 100 by an end cap 160.

[0050] The outer sheath 320 is provided with a first pipe joint 321 at its proximal end. The core tube 310 extends from the proximal end of the outer sheath 320 through the first pipe joint 321 inside the outer sheath 320. The outer wall of the core tube 310 and the first pipe joint 321 can be fitted with a movable seal, that is, the outer sheath 320 and the core tube 310 are allowed to move relative to each other. During the movement, the outer wall of the core tube 310 and the first pipe joint 321 remain sealed. The interface of the first pipe joint 321 connects the radial gap between the outer sheath 320 and the core tube 310, which can be used to perform operations such as filling and venting.

[0051] Since the outer sheath 320 slides axially relative to the control handle, the operating port 121 is strip-shaped and its length is adapted to the stroke of the pipe fitting, thus avoiding interference with the movement of the first pipe joint 321.

[0052] The proximal end of the sheath 330 is provided with a second pipe connector 331. The outer sheath 320 extends from the proximal end of the sheath 330 through the second pipe connector 331 inside the sheath 330. The outer wall of the outer sheath 320 and the second pipe connector 331 can be fitted with a movable seal, that is, the outer sheath 320 and the sheath 330 are allowed to move relative to each other. During the movement, the outer wall of the outer sheath 320 and the second pipe connector 331 remain sealed. The interface of the second pipe connector 331 connects the radial gap between the outer sheath 320 and the sheath 330 and can be used to perform operations such as filling and venting.

[0053] The control handle (taking the first handle 100 as an example in the figure) includes a support body 110 and a shell 120 surrounding at least a portion of the support body 110. One part of the support body 110 is a tubular portion 111. The proximal end of the outer sheath 320 is located inside the tubular portion 111. The side wall of the tubular portion 111 is provided with a clearance opening 112. When multiple pipe joints are configured, at least one pipe joint is located inside the clearance opening 112, and other pipe joints may be located outside the clearance opening 112.

[0054] In this embodiment, the clearance opening 112 is used to expose the first pipe connector 321 and avoid the movement of the first pipe connector 321. The edge of the clearance opening 112 is provided with an outwardly turned part 113, and the slot 114 is provided on the outwardly turned part 113. The second pipe connector 331 is located on the far end side of the tubular part 111. The outer shell 120 is located on the outer periphery of the tubular part 111, and the operation port 121 is opened on the outer shell 120.

[0055] See Figure 8The second pipe connector 331 can adopt the same structure as the first pipe connector 321. Taking the second pipe connector 331 as an example, the second pipe connector 331 has an interface 332, and a one-way valve core 333 is provided inside the second pipe connector 331, which only allows fluid to flow from the interface 332 into the radial gap between the outer sheath tube 320 and the protective sleeve 330. The second pipe connector 331 and the outer sheath tube 320 are slidably sealed together by a sealing ring 334.

[0056] See Figure 9 and Figure 10 In order to drive the outer sheath 320 to slide axially and be circumferentially limited relative to the first handle 100, the support body 110 is provided with a guide groove 115 extending axially. The first pipe connector 321 is also connected to a transmission component extending proximally. The transmission component is slidably disposed in the guide groove 115. For example, the transmission component includes: The cylinder 323 is located on the outer periphery of the core tube 310 and extends from the first pipe joint 321 toward the proximal end; The sliding seat 324 is fixed to the cylinder 323 and provides transmission gears. The sliding seat 324 slides along the guide groove 115 and is restricted from rotating.

[0057] The control handle also includes a drive sleeve 140 that is rotatably sleeved on the outside of the support body 110. The drive sleeve 140 has an internal thread and is threadedly engaged with the transmission teeth.

[0058] The first handle 100 also slides axially and is circumferentially limited by a connector 150. The second handle 200 is mounted on the connector 150. The connector 150 and the second handle 200 can slide axially relative to the first handle 100 together. The proximal end of the core tube 310 is fixed with a tailstock 312 and is fixedly connected to the second handle 200 through the tailstock 312.

[0059] See Figure 11 This application also provides another interventional delivery system in one embodiment. The main difference between this embodiment and the previous embodiments is that the catheter assembly 300 also includes an inner sheath 340. The inner sheath 340 is slidably sleeved on the outer periphery of the outer sheath 320. The figure also illustrates that the artificial implant 400 is wrapped and loaded inside the outer sheath 320. The inner sheath 340 includes a handle 341 and a tube body 342 extending distally from the handle 341. The handle 341 and the tube body 342 have a through-hole for the outer sheath 320 to pass through. In order to expel air from the gap between the tube body 342 and the outer sheath 320 before surgery, a third tube connector 344 (e.g., using a Luer connector) communicating with the through-hole is provided at the handle 341. The handle 341 is provided with a second cover 343, which covers the third tube connector 344 before use.

[0060] The outer periphery of the handle 341 has a settling area, the third pipe joint 344 is located in the settling area, and the second cover 343 is placed over the settling area. The second cover 343 can be installed by sliding or rotating. When the second cover 343 covers the third pipe joint 344, it smoothly transitions with the surrounding area of ​​the handle 341 or is flush with the height, which can avoid excessive protrusion in some areas and keep the exterior neat and beautiful.

[0061] See Figure 12 When in use, the second cover 343 is flipped or removed to expose the third pipe connector 344, and then the external pipe 345 is connected to the third pipe connector 344. In this embodiment, the first handle 100 is equipped with a first cover 130, and the handle 341 of the inner sheath 340 is provided with a second cover 343, which can make the product appearance cleaner and make the operation convenient and quick when connecting the external pipe.

[0062] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. An interventional delivery system having opposing distal and proximal ends and an axial extension between the distal and proximal ends, characterized in that, The intervention delivery system includes: A control handle, wherein the control handle has an internal mounting chamber and an operating port communicating with the mounting chamber is provided on the surface of the control handle; A first cover is movably connected to the control handle to close or open the operating port.

2. The interventional delivery system according to claim 1, characterized in that, The installation method of the first shield and the control handle is selected from at least one of sliding connection, rotational connection, and detachable connection.

3. The intervention delivery system according to claim 1, characterized in that, The first shield has a snap-fit ​​that engages with the control handle; The first shielding cover is sealed to the operating port.

4. The interventional delivery system according to claim 1, characterized in that, Of the proximal and distal sides of the first shielding cover, one side is a hinged mounting side and the other side is a freely flip-over side; The free-flipping side has a force-applying part that protrudes from the outer surface of the control handle.

5. The interventional delivery system according to claim 1, characterized in that, The intervention delivery system also includes: The conduit assembly includes at least one fitting, the proximal end of which extends into the mounting chamber, and the proximal end of the fitting is provided with a pipe fitting located within the mounting chamber, the location of which is exposed at the operating port.

6. The interventional delivery system according to claim 5, characterized in that, The conduit assembly includes at least two tubular components, one inner and one outer, with one of the two adjacent components being the outer tube and the other the inner tube, and there is a radial gap between them. The outer tube is provided with the pipe joint at its proximal end. The pipe joint is slidably and sealingly fitted outside the inner tube. The pipe joint has an interface for connecting external devices, and the interface is in communication with the radial gap. Of the two adjacent pipe fittings, at least one pipe fitting is axially slidably fitted relative to the control handle, and the operating port is strip-shaped with a length adapted to the stroke of the pipe fitting.

7. The interventional delivery system according to claim 6, characterized in that, The pipe joint is equipped with a one-way valve core, which only allows fluid to flow from the interface into the radial gap.

8. The interventional delivery system according to claim 5, characterized in that, The catheter assembly includes a core tube and an outer sheath that are sequentially fitted from the inside out, and the proximal end of the outer sheath is provided with a first tubing connector; The distal end of the core tube is used to load the artificial implant, and the outer sheath slides relative to the core tube to enclose or expose the artificial implant; The control handle includes: A support body, a portion of which is a tubular section, with the proximal end of the outer sheath located within the tubular section. The sidewall of the tubular section has a clearance opening to expose the first pipeline connector. The outer casing is located on the outer periphery of the tubular portion, and the operating port is opened in the outer casing.

9. The interventional delivery system according to claim 8, characterized in that, The catheter assembly also includes a sheath located around the outer sheath, the sheath being fixedly connected to the control handle, and a second tubing connector located at the proximal end of the sheath, the second tubing connector being located at the distal end of the tubular portion.

10. The intervention delivery system according to claim 8, characterized in that, The edge of the clearance opening is provided with an outwardly extending radially outwardly turned portion; The first cover has a side extending into the operating port. The side and the control handle are provided with a positioning structure that cooperates with each other. The positioning structure consists of a slot and a rib that cooperate with each other, one of which is provided on the side and the other is provided on the inner side wall of the outwardly turned part.

11. The interventional delivery system according to claim 8, characterized in that, The catheter assembly also includes; An inner sheath is slidably fitted onto the outside of the outer sheath tube. The inner sheath includes a handle and a tube extending distally from the handle. The handle has a through-hole that communicates with the interior of the tube. The handle is also provided with: The third pipe joint is connected to the through port; A second cover is movably connected to the handle to cover or expose the third conduit connector.

12. The interventional delivery system according to claim 11, characterized in that, The outer periphery of the handle has a settling zone, the third pipe joint is located in the settling zone, and the second shielding cover is placed over the settling zone.

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