Delivery System for Medical Implants

Abstract

The present invention relates to a delivery system for a medical implant, comprising a connected delivery component and a drive component; the drive component includes a motor component and a hydraulic component; the delivery component includes a catheter component and a pressure component, the catheter component includes a fixed tube and a movable tube; the pressure component includes a hydraulic chamber and a movable member; the movable member is movably disposed within the hydraulic chamber; the movable tube is connected to the movable member; the motor component is configured to drive the hydraulic component to deliver a medium to the hydraulic chamber so as to drive the movable member and the movable tube to move relative to the fixed tube. The present invention can simplify the delivery operation steps, achieve stable and efficient operation of the delivery system, reduce the surgical duration, and improve the success rate of the surgery.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a delivery system for a medical implant. Background Art

[0002] Transcatheter vascular stent implantation is a commonly used minimally invasive treatment for cardiovascular diseases in recent years. Its principle is to load an artificial stent into a delivery system, and then release the artificial stent at an appropriate position through the catheter of the delivery system. In the treatment of heart valve diseases, transcatheter vascular stent implantation avoids the huge trauma to patients caused by cardiac arrest after thoracotomy in conventional surgical treatments.

[0003] This technology requires a doctor to operate the stent valve prosthesis and accurately and stably release the stent valve prosthesis at an appropriate position. Commonly used delivery systems generally have a large mass and volume of the operating handle due to the use of mechanical structure transmission, and cannot be operated as freely as common surgical tools. Moreover, the doctor's control accuracy of the delivery system is also low. At the same time, the operation of the delivery system with traditional mechanical structure transmission is relatively complex, indirectly increasing the operation time and directly affecting the operation result. Summary of the Invention

[0004] The purpose of the present invention is to provide a delivery system for a medical implant, which can simplify the operation steps, achieve stable and efficient operation of the delivery system, thereby reducing the operation time and improving the success rate of the operation. Moreover, different operations only need to replace the execution elements, effectively reducing the cost.

[0005] To achieve the above purpose, a delivery system for a medical implant provided by the present invention includes a connected delivery component and a driving component; the driving component includes a connected motor component and a hydraulic component;

[0006] The delivery component includes a catheter component and a pressure component; the catheter component includes a fixed tube and a movable tube, and the fixed tube and the movable tube can move relative to each other;

[0007] The pressure component includes a hydraulic chamber and a movable member; the movable member is movably arranged in the hydraulic chamber; the movable tube is connected to the movable member; the motor component is used to drive the hydraulic component to deliver a medium to the hydraulic chamber to drive the movable member and the movable tube to move relative to the fixed tube.

[0008] Optionally, the movable member divides the hydraulic chamber into an axially arranged release chamber and a closing chamber;

[0009] When the hydraulic component delivers the medium to the release chamber, the movable member and the movable tube move relative to the fixed tube in a first direction;

[0010] When the hydraulic component conveys a medium to the closed cavity, the moving member and the moving tube move relative to the fixed tube in a second direction.

[0011] Optionally, the catheter component includes an outer tube assembly and an inner tube assembly. The outer tube assembly is disposed outside the inner tube assembly and is capable of relative movement.

[0012] One of the outer tube assembly and the inner tube assembly is configured as a fixed tube, and the other is configured as a moving tube. Alternatively, either the outer tube assembly or the inner tube assembly can be switched between a fixed tube and a moving tube.

[0013] Optionally, when one of the outer tube assembly and the inner tube assembly is configured as a fixed tube and the other is configured as a moving tube, the number of hydraulic chambers is one. One moving member is disposed in one hydraulic chamber, and one moving member is used to drive the outer tube assembly or the inner tube assembly to move.

[0014] When either the outer tube assembly or the inner tube assembly can be switched between a fixed tube and a moving tube, the number of hydraulic chambers is two. One moving member is disposed in each hydraulic chamber. The moving member in one hydraulic chamber is used to drive the outer tube assembly to move, and the moving member in the other hydraulic chamber is used to drive the inner tube assembly to move.

[0015] Optionally, when the number of hydraulic chambers is one and the inner tube assembly is a moving tube:

[0016] The inner tube assembly includes a tapered head, a sheath tube, and an inner tube. The tapered head is fixedly connected to the sheath tube and the inner tube respectively. The outer tube assembly includes a fixed head, a connecting tube, and an outer tube that are axially connected in sequence from the distal end to the proximal end. The moving member is fixedly connected to the inner tube. The inner tube movably passes through the fixed head, the connecting tube, and the outer tube in sequence. Or, when the number of hydraulic chambers is one and the outer tube assembly is configured as a moving tube:

[0017] The outer tube assembly includes a connected sheath tube and a delivery outer tube. The inner tube assembly includes a tapered head, a distal inner tube, a fixed head, and a proximal inner tube. The proximal end of the tapered head is connected to the distal end of the distal inner tube. The proximal end of the distal inner tube is connected to the fixed head. The fixed head is fixedly disposed at the distal end of the proximal inner tube. The moving member is connected to the delivery outer tube.

[0018] Optionally, the delivery assembly further includes a handle component, and the handle component is disposed at the proximal end of the catheter component.

[0019] When the outer tube assembly is a movable tube, the hydraulic chamber includes a first hydraulic chamber for receiving a medium to drive the movement of the outer tube assembly. The first hydraulic chamber is connected to a pair of conduit connectors movably disposed on the handle member, and a guiding groove is provided on the handle member. The pair of conduit connectors are adapted to move within the guiding groove.

[0020] Optionally, the drive assembly further includes a control box, and both the motor assembly and the hydraulic assembly are disposed within the control box. A pair of conduit interfaces are provided on the control box and are connected to the hydraulic assembly. The pair of conduit interfaces are also connected to the release chamber and the closing chamber of the hydraulic chamber through a medium delivery conduit.

[0021] A human-machine interface is further provided on the control box. The human-machine interface is used for inputting information, which includes at least one of the moving speed, moving stroke, and medium pressure of the movable tube.

[0022] Optionally, the number of the movable tubes is one or more.

[0023] When the number of the movable tubes is one, the number of the hydraulic chambers is also one, and one movable member is disposed within one hydraulic chamber to drive the movement of one movable tube.

[0024] When the number of the movable tubes is multiple, the number of the hydraulic chambers is also multiple. One movable member is disposed within each hydraulic chamber, and the movable member in each hydraulic chamber is used to drive the corresponding movable tube to move. The hydraulic assembly is used to selectively deliver the medium to one of the multiple hydraulic chambers.

[0025] Optionally, the number of the hydraulic chambers is multiple, and the numbers of both the motor assembly and the hydraulic assembly are one.

[0026] The drive assembly further includes a commutation control module respectively connected to the hydraulic assembly and the delivery assembly. The commutation control module is used to selectively connect the hydraulic assembly to one of the multiple hydraulic chambers so that the hydraulic assembly selectively delivers the medium to one of the multiple hydraulic chambers.

[0027] Optionally, the commutation control module includes an electromagnetic directional valve; the electromagnetic directional valve includes a plurality of valve groups and two connection ports; the two connection ports are connected to the hydraulic component; the plurality of valve groups are connected to the conveying component, and each valve group includes two valves; each valve group is used to control the connection of a corresponding hydraulic chamber to the hydraulic component; when the two connection ports are communicated with one of the plurality of valve groups, a corresponding hydraulic chamber is connected to the hydraulic component.

[0028] Optionally, the number of the hydraulic chambers is two, namely a first hydraulic chamber and a second hydraulic chamber;

[0029] The catheter component includes an outer tube assembly, an intermediate tube, and an inner tube assembly. The outer tube assembly is disposed outside the inner tube assembly and the intermediate tube; the outer tube assembly and the inner tube assembly can move relative to the intermediate tube; the intermediate tube is disposed inside the outer tube of the conveying section and is located between the outer tube of the conveying section and the inner tube; one of the outer tube assembly and the inner tube assembly is selectively configured as a moving tube.

[0030] The outer tube assembly includes a proximal sheath and an outer tube of the conveying section; the distal end of the outer tube of the conveying section is fixedly connected to the proximal end of the proximal sheath;

[0031] The inner tube assembly includes a tapered head, a distal sheath, and an inner tube. The distal end of the inner tube is connected to the tapered head, and the distal end of the distal sheath is fixedly connected to the proximal end of the tapered head;

[0032] Wherein a second moving member is disposed in the second hydraulic chamber, and the second moving member is connected to the inner tube to drive the inner tube to move; a first moving member is disposed in the first hydraulic chamber, and the first moving member is connected to the outer tube of the conveying section to drive the outer tube of the conveying section to move.

[0033] Optionally, sealing rings are respectively provided at the proximal and distal ends of the hydraulic chamber, and sealing rings are provided on the moving member.

[0034] Optionally, the conveying component further includes a bending control component, the bending control component includes a bending control chamber and a bending control mechanism, the bending control mechanism is used to control the bending of the catheter component, and the bending control chamber is used to drive the bending control mechanism to move through hydraulic pressure to adjust the bending state of the catheter component.

[0035] Optionally, the conveying system further includes a control component communicatively connected to the motor component; the motor component drives the hydraulic component to convey a medium to the hydraulic chamber under the control of the control component; the control component is separately arranged from the conveying component and the driving component.

[0036] Optionally, the control component includes a control button and a communication interface; the communication interface is used for wired or wireless communication with the motor component; the control button is used for generating a control signal; the motor component is used for driving the hydraulic component to selectively deliver a medium to one of a release chamber and a closing chamber of the hydraulic chamber according to the control signal.

[0037] Optionally, the driving component and the conveying component are arranged separately.

[0038] Optionally, the hydraulic chamber is arranged inside the catheter component and extends to the distal end along the axis of the catheter component, or the hydraulic chamber is arranged inside the handle component, and the handle component is arranged at the proximal end of the catheter component.

[0039] The delivery system of the medical implant provided by the present invention realizes the loading and release of the medical implant by using electric power and hydraulic pressure to drive the movement of the catheter component. By doing so, the same set of delivery system can bear different loads, and the same set of delivery system can provide different pushing forces, so as to be able to deliver different medical implants. In this way, the same set of delivery system can be applicable to different medical implants, with good flexibility. In addition, the delivery system of the medical implant provided by the present invention combines electric power and hydraulic pressure to drive the movement of the catheter component, reduces the overall mass and volume of the actuator (i.e., the catheter part), improves the ease of use, also improves the control accuracy of the delivery operation, and at the same time, the same set of driving component can be reused, and only the actuator needs to be replaced to complete different surgeries, which can effectively reduce the surgical cost.

[0040] The delivery system of the medical implant provided by the present invention preferably separates the driving component from the conveying component (i.e., the driving component is not arranged on the conveying component), further reducing the volume and mass of the catheter part, improving the delivery control accuracy of the medical implant, avoiding the problem that the operation of the operator is affected by excessive load on the conveying part, thus improving the convenience of operation and the success rate of the surgery. In addition, since the driving component is arranged independently of the conveying component and the interference between the two is small, when the conveying component is modified, for example, when the conveying component is given new functions, it is less restricted by the driving component, reducing the difficulty of modifying the conveying component, which is beneficial to expanding the functions of the delivery system and improving the use performance of the delivery system.

[0041] The delivery system of the medical implant provided by the present invention is simple to operate and convenient for doctors to operate. Especially when the hydraulic chamber is arranged at the proximal end of the conveying component (i.e., inside the handle), it is safer than when the hydraulic chamber is arranged at the distal end of the conveying component (i.e., inside the catheter component).

[0042] The delivery system of the medical implant provided by the present invention can be configured with multiple hydraulic chambers, and the switching between the hydraulic chambers is realized through a commutation control module, so that all the hydraulic chambers can be controlled by only one driving component, which simplifies the structure of the driving part and is more conducive to the popularization and use of the delivery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Those of ordinary skill in the art will understand that the provided drawings are used to better understand the present invention and do not limit the scope of the present invention in any way. In the drawings:

[0044] Figure 1 is a schematic structural diagram of a delivery component in the delivery system in a preferred embodiment of the present invention;

[0045] Figure 2 is a schematic structural diagram of wired communication between a driving component and a control component in the delivery system in a preferred embodiment of the present invention;

[0046] Figure 3 is a schematic structural diagram of a control box in the driving component in a preferred embodiment of the present invention;

[0047] Figure 4 is a schematic structural diagram of the driving component in a preferred embodiment of the present invention;

[0048] Figure 5 is a schematic structural diagram of the control component in a preferred embodiment of the present invention;

[0049] Figure 6a is an axial sectional view of the delivery component in Embodiment 1 of the present invention when it is closed;

[0050] Figure 6b is an axial sectional view of the delivery component in Embodiment 1 of the present invention when it is released;

[0051] Figure 7a is an axial sectional view of the delivery component in Embodiment 2 of the present invention when it is closed;

[0052] Figure 7b is an axial sectional view of the delivery component in Embodiment 2 of the present invention when it is released;

[0053] Figure 8a is an axial sectional view of the delivery component in Embodiment 3 of the present invention when it is closed;

[0054] Figure 8b is an axial sectional view of the delivery component in Embodiment 3 of the present invention when it is released;

[0055] Figure 9a is a schematic structural diagram of the electromagnetic directional valve in Embodiment 3 of the present invention when it is switched to connect one of the hydraulic chambers;

[0056] Figure 9b It is the structural schematic diagram of the electromagnetic reversing valve in the third embodiment of the present invention when switched to connect another hydraulic chamber;

[0057] Figure 10a It is the axial sectional view of the conveying assembly in the fourth embodiment of the present invention when closed;

[0058] Figure 10b It is the axial sectional view of the conveying assembly in the fourth embodiment of the present invention when released;

[0059] Figure 11a It is the structural schematic diagram of the bending control component in the fifth embodiment of the present invention;

[0060] Figure 11b It is the schematic diagram of the bending control component in the fifth embodiment of the present invention for controlling the distal end of the catheter component to bend.

[0061] The description of the reference numerals is as follows:

[0062] 1 - conveying assembly; 101, 102 - catheter connectors;

[0063] 2 - driving assembly; 21 - catheter interface; 22 - emergency stop device; 23 - human - machine interface; 24 - signal input port; 25 - control box bracket; 26 - rotating motor; 27 - transmission mechanism; 28 - linear module; 29 - connecting block; 30 - hydraulic cylinder body; 310 - first outlet; 320 - second outlet; 330 - piston;

[0064] 3 - medium conveying catheter;

[0065] 4 - control assembly;

[0066] 401 - communication interface; 402 - control button; 403 - bump;

[0067] 5 - signal control line;

[0068] 6 - electromagnetic reversing valve; 61 - housing; 62 - first reversing valve; 63 - second reversing valve; 64 - third reversing valve; 65 - fourth reversing valve; 66 - first connection port; 67 - second connection port; 68 - push rod; 69 - sealing ring;

[0069] 100 - first type of conveying assembly; 121 - distal sealing ring; 122 - fixed head; 123 - connecting pipe; 124 - outer tube; 125 - closed catheter connector; 126 - released catheter connector; 127 - proximal sealing ring; 111 - conical head; 112 - sheath; 113 - guide wire cavity; 114 - moving part; 115 - inner tube; 116 - closed cavity; 117 - released cavity; 118 - outer shell;

[0070] 200 - The second delivery assembly; 221 - Sheath tube; 222 - Delivery outer tube; 223 - Release catheter connector; 224 - Closure catheter connector; 225 - Movable member; 226 - Housing; 227 - Cavity; 211 - Tapered head; 212 - Distal inner tube; 213 - Fixed head; 214 - Distal sealing ring; 215 - Proximal inner tube; 216 - Proximal sealing ring; 217 - Guide wire cavity; 218 - Release cavity; 219 - Closure cavity;

[0071] 300 - The third delivery assembly;

[0072] 31 - Inner tube assembly; 311 - Tapered head; 312 - Distal sheath tube; 313 - Inner tube; 314 - Second movable member;

[0073] 32 - Intermediate tube assembly; 321 - Second distal sealing ring; 322 - Fixed head; 323 - Connecting tube; 324 - Intermediate tube; 325 - First movable member;

[0074] 33 - Outer tube assembly; 331 - Proximal sheath tube; 332 - First distal sealing ring; 333 - Delivery section outer tube;

[0075] Pressure components: 325 - First movable member; 332 - First distal sealing ring; 336 - First proximal sealing ring; 314 - Second movable member; 321 - Second distal sealing ring; 326 - Second proximal sealing ring;

[0076] 34 - Handle assembly; 341 - Guide groove; 342 - Housing; 334 - First release catheter connector; 335 - First closure catheter connector; 327 - Second closure catheter connector; 328 - Second release catheter connector;

[0077] 400 - The fourth delivery assembly; 41 - Inner tube assembly; 411 - Tapered head; 412 - Distal inner tube; 413 - Fixed head; 414 - Proximal inner tube; 42 - Outer tube assembly; 421 - Sheath tube; 422 - Delivery outer tube; 43 - Pressure component; 433 - Hydraulic chamber; 423 - Movable member; 44 - Handle assembly; 431 - Distal sealing ring; 432 - Proximal sealing ring; 434 - Release catheter connector; 435 - Closure catheter connector;

[0078] 51 - Silk thread; 52 - Silk thread fixing piece; 55 - Lead screw; 53, 54 - Catheter connectors. Detailed implementation manners

[0079] To make the objectives, advantages, and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the accompanying drawings are all in simplified form and not drawn to scale, and are only used to conveniently and clearly assist in explaining the objectives of the embodiments of the present invention. As used in this specification, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. As used in this specification, the term "or" is generally used in the sense of including "and / or" unless the context clearly dictates otherwise. The terms "first", "second", "third", and "fourth" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined with "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0080] In the following description, for the sake of convenience of description, the terms "distal end" and "proximal end" are used; the "distal end" is the side away from the operator of the delivery system, that is, the end that first enters the body; the "proximal end" is the side close to the operator of the delivery system; the "axial direction" refers to the direction along the axis of the delivery assembly. Additionally, in the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some well-known technical features in the art are not described.

[0081] The core idea of the present invention is to provide a delivery system for a medical implant, the delivery system including a connected delivery assembly and a drive assembly; the drive assembly including a connected motor assembly and a hydraulic assembly; the delivery assembly including a catheter component and a pressure component; the catheter component including a fixed tube and a movable tube; the fixed tube and the movable tube being able to move relative to each other; the pressure component including a hydraulic chamber and a movable member; the movable member being movably disposed in the hydraulic chamber; the movable tube being connected to the movable member; the motor assembly being configured to drive the hydraulic assembly to deliver a medium to the hydraulic chamber to drive the movable member and the movable tube to move relative to the fixed tube. Further, the movable member divides the hydraulic chamber into an axially arranged release chamber and a closing chamber; when the hydraulic assembly delivers the medium to the release chamber, the movable member and the movable tube move relative to the fixed tube in a first direction; when the hydraulic assembly delivers the medium to the closing chamber, the movable member and the movable tube move relative to the fixed tube in a second direction; thereby realizing the relative movement of the fixed tube and the movable tube, the first direction being opposite to the second direction.

[0082] The delivery system provided by the present invention realizes the loading and release of medical implants by using electric and hydraulic power to drive the movement of the catheter component, enabling the same delivery system to withstand different loads and provide different pushing forces, so as to be able to deliver different medical implants. It should be understood that different medical implants require different pushing forces. For example, valve stents require a relatively large pushing force. Therefore, the same delivery system can be applicable to different medical implants, with good flexibility. Moreover, by using the combination of electric and hydraulic power to drive the movement of the catheter component, the overall mass and volume of the actuating element (i.e., the delivery part) are reduced, improving the ease of use and the operation control accuracy. At the same time, since the driving component and the actuating element are detachably connected, only by replacing the actuating element can the driving component be reused, effectively reducing the surgical cost for different surgeries.

[0083] In addition, the present invention preferably separates the driving component from the delivery component, that is, the driving component is not arranged on the delivery component, thereby reducing the volume and mass of the delivery part, further improving the delivery control accuracy of the medical implant, avoiding the problem that the excessive load on the delivery part affects the operation of the operator, thus improving the operation convenience and the success rate of the surgery. Additionally, since the driving component is independently arranged relative to the delivery component and the two interfere with each other less, when modifying the delivery component, for example, endowing the delivery component with new functions, it is less restricted by the driving component, reducing the difficulty of modifying the delivery component, which is beneficial to expanding the functions of the delivery system and improving the performance of the delivery system. Further, the hydraulic chamber is preferably arranged inside the handle component, and the handle component is arranged at the proximal end of the catheter component, so that the hydraulic chamber is arranged at the proximal end of the delivery component, which makes the hydraulic delivery safer. Of course, in other embodiments, the hydraulic chamber can also be arranged inside the catheter component and extend along the axis of the catheter component to the distal end of the catheter component.

[0084] The medical implants applicable to the delivery system of the present invention can be selected based on the position of the target delivery site. For example, the medical implants include but are not limited to valve stents (such as heart valve stents). Those skilled in the art can understand that the delivery system disclosed in the present invention can also be used to place other medical implants (such as vascular stents, aneurysm stents, balloon-expandable stents, ureteral stents, prostate stents, peripheral stents, tracheobronchial stents, etc.) into the corresponding positions in the body in addition to valve stents. The medical implants can also be grafts, embolization devices, occlusion devices, etc. The present invention also does not limit the access method of the delivery system, and the access to the treatment site can be provided by various techniques and methods. For example, percutaneous transluminal angioplasty, etc.

[0085] The conveying system of the present invention may further include a control component communicatively connected to the motor component. The control component is used to control the operating state of the motor component. The operating state of the motor component mainly includes the rotation direction of the motor (forward or reverse). Optionally, the control component can also control the start / stop and rotation speed of the motor component. Preferably, the control component and the drive component are separately arranged. In this article, "separately arranged" means that the two components are not integrated in the same container or closely connected in the physical space. For example, the control component is neither arranged on the drive component nor on the conveying component, making the control component, the conveying component, and the drive component independent of each other. The advantage of doing this is to avoid increasing the volume of the drive component, thereby reducing the space occupied by the area around the operating table to avoid affecting the surgical operation. Moreover, it is also convenient to sterilize the control component separately, reducing the sterilization difficulty and ensuring the surgical safety. The control component is preferably a portable device. On the one hand, it is convenient to sterilize the control component to ensure the surgical safety. On the other hand, it has the advantages of being small and light, which is convenient for doctors to operate.

[0086] The following further describes the conveying system of the present invention in more detail with reference to the accompanying drawings and preferred embodiments.

[0087] Refer to Figures 1 - 2 , an embodiment of the present invention provides a conveying system for a medical implant, which includes a conveying component 1 and a drive component 2. The conveying component 1 needs to include a catheter component and a pressure component. The catheter component includes a fixed tube and a movable tube, and the fixed tube and the movable tube can move relative to each other. It should be understood that in some embodiments, the inner tube component in the catheter component can be configured as the movable tube, and at the same time, the outer tube component of the catheter component can be configured as the fixed tube. At this time, the inner tube component is always the movable tube, and the outer tube component is always the fixed tube. In some embodiments, the outer tube component in the catheter component can be configured as the movable tube, while the inner tube component of the catheter component can be configured as the fixed tube. At this time, the outer tube component is always the movable tube, and the inner tube component is always the fixed tube. In other embodiments, any one of the inner tube component and the outer tube component can be switched between the fixed tube and the movable tube. In other words, when the outer tube component is the movable tube, the inner tube component is the fixed tube, so that the outer tube component moves relative to the inner tube component. And when the inner tube component is the movable tube, the outer tube component is the fixed tube, so that the inner tube component moves relative to the outer tube component; at this time, the number of movable tubes is multiple, and each movable tube is usually configured with a hydraulic chamber.

[0088] The pressure component includes a hydraulic chamber and a moving member; the moving member is movably disposed in the hydraulic chamber and divides the hydraulic chamber into an axially arranged release chamber and a closing chamber; the moving tube is connected to the moving member. When the number of moving tubes is one, the number of hydraulic chambers is usually also one, and one moving member is disposed in one hydraulic chamber to drive one moving tube to move; when the number of moving tubes is multiple, the number of hydraulic chambers is also multiple. Preferably, the number of hydraulic chambers is the same as the number of moving tubes. One moving member is disposed in each hydraulic chamber, and the moving member in each hydraulic chamber is used to drive a corresponding moving tube to move. Moreover, the hydraulic assembly can selectively deliver the medium to one of the multiple hydraulic chambers.

[0089] Wherein: The driving assembly 2 is preferably separately disposed from the conveying assembly 1, so that the driving assembly 2 and the conveying assembly 1 are spatially separated or apart, that is, the driving assembly 2 is not disposed on the conveying assembly 1, such that the conveying assembly 1 and the driving assembly 2 are not physically integrated in the same container or are not closely connected. The driving assembly 2 is used to deliver the medium to the conveying assembly 1 (i.e., to the hydraulic chamber). More specifically, as Figure 2 shown, the driving assembly 2 delivers the medium to the conveying assembly 1 through a medium delivery conduit 3 (the medium delivery conduit 3 is respectively connected to the conveying assembly 1 and the driving assembly 2). Preferably, the medium delivery conduit 3 is a high-pressure resistant conduit (i.e., a high-pressure pipe) to adapt to the purpose of the conveying system for conveying different medical implants. The number of the medium delivery conduits 3 is not limited and can be configured according to the number of hydraulic chambers. In addition, the driving assembly 2 adopts hydraulic and electric solutions to deliver the medium to the conveying assembly 1. Specifically, the driving assembly 2 includes a motor assembly and a hydraulic assembly connected to each other. The motor assembly provides a driving force to drive the hydraulic assembly to deliver the medium to the hydraulic chamber. Preferably, the driving assembly 2 further includes a control box (not labeled), and both the motor assembly and the hydraulic assembly are disposed in the same control box. The control box is used to protect the motor assembly and the hydraulic assembly, which is beneficial for arranging around the operating table.

[0090] Preferably, the conveying system further includes a control component 4, which communicates with the driving component 2 in a wired or wireless manner. The control component 4 is configured to send a control signal to the driving component 2, so that the motor component operates according to the control signal to drive the hydraulic component to convey a medium to the hydraulic chamber, thereby realizing operations such as loading of the medical implant, release, and reset of the conveying component 1. In this embodiment, the control component 4 can communicate with the driving component 2 in a wired manner through a signal control line 5. Further, the control component 4 is not disposed on the conveying component 1 either, so that the conveying component 1 is spatially separated or apart from the control component 4, that is, the conveying component 1 and the control component 4 are not integrated in the same container or closely connected in the physical space. More preferably, the control component 4 is not disposed on the driving component 2 either, so that the control component 4, the driving component 2, and the conveying component 1 are arranged independently of each other.

[0091] Further, the motor component is communicatively connected to the control component 4 to receive the control signal from the control component 4. For example, the control signal includes a release signal (the first signal) and a closing signal (the second signal). When the control component 4 sends a release signal to the motor component, the motor component drives the hydraulic component to convey a medium to the release chamber of the hydraulic chamber; conversely, when the control component 4 sends a closing signal to the motor component, the motor component drives the hydraulic component to convey a medium to the closing chamber of the hydraulic chamber.

[0092] In one embodiment, the motor component includes a rotary motor and a motion conversion mechanism. The rotary motion of the rotary motor is converted into a linear motion by the motion conversion mechanism, and then the piston in the hydraulic component is driven to move by the motion conversion mechanism. In another embodiment, the motor component includes a linear motor, and the piston in the hydraulic component is driven to move by the linear motion of the linear motor.

[0093] More specifically, referring to Figure 4 , the hydraulic component includes a hydraulic cylinder body 30 and a piston 330. The piston 330 is movably disposed in the hydraulic cylinder body 30. The piston 330 divides the space in the hydraulic cylinder body 30 into a release driving chamber and a closing driving chamber. Among them, the release driving chamber has a first outlet 310, and the closing driving chamber has a second outlet 320. The relative positional relationship between the first outlet 310 and the second outlet 320 is not limited, as long as two outlets are provided on the hydraulic cylinder body 30, one outlet communicates with the release driving chamber on one side of the piston 330, and the other outlet communicates with the closing driving chamber on the other side of the piston 330.

[0094] In an exemplary embodiment, continuing to refer to Figure 4, the driving component 2 includes a rotary motor 26, a transmission mechanism 27, a linear module 28, a connecting block 29, and a hydraulic component that are connected in sequence. The transmission mechanism 27 may include a coupling and / or a reducer. The linear module 28 is the motion conversion mechanism. Optionally, the linear module is a lead screw or a synchronous belt. The connecting block 29 is used to connect the output end of the linear module 28 and the piston rod in the hydraulic component. Thus, the rotational motion of the rotary motor 26 is transmitted to the linear module 28 through the transmission mechanism 27, and then the linear module 28 converts the rotational motion into a linear motion, thereby driving the piston 330 in the hydraulic component to move. It should be noted that when the motor is a linear motor, the moving plane of the linear motor is connected to the piston rod in the hydraulic component through the connecting block 29. Further, the driving component 2 may further include a reducer to adjust the output power of the motor through the reducer.

[0095] In addition, both outlets on the hydraulic cylinder body 30 are connected to the medium delivery conduit 3. Optionally, a pair of conduit interfaces 21 are provided on the control box, and each outlet on the hydraulic cylinder body 30 is connected to the corresponding conduit interface 21 on the control box. The medium in the release drive chamber then sequentially passes through the first outlet 310, one of the conduit interfaces 21, and one of the medium delivery conduits 3 to enter the release chamber of the hydraulic chamber, realizing the release of the distal end of the delivery component; conversely, the medium in the closing drive chamber sequentially passes through the second outlet 320, the other conduit interface 21, and the other medium delivery conduit 3 to enter the closing chamber of the hydraulic chamber, realizing the closing of the distal end of the delivery component.

[0096] As Figure 1 shown, at least a pair of conduit joints 101, 102 may be provided on the delivery component 1. The release chamber and the closing chamber of the hydraulic chamber are respectively connected to a corresponding conduit joint, and one end of the medium delivery conduit 3 is connected to the conduit joint and the other end is connected to the conduit interface 21. The number of conduit interfaces 21 is the same as the number of medium delivery conduits 3. For example, when only one hydraulic chamber is provided on the delivery component 1, this hydraulic chamber corresponds to two cavities, namely a release chamber and a closing chamber. Each cavity is connected to the hydraulic component through a conduit joint and a medium delivery conduit 3. At this time, the driving component 2 provides two conduit interfaces 21, and each conduit interface 21 is connected to a corresponding medium delivery conduit 3. In other embodiments, when there are multiple hydraulic chambers, such as two hydraulic chambers, a pair of conduit joints need to be configured for each hydraulic chamber, but only two conduit interfaces are required.

[0097] Continue to refer to Figures 2 - 5, the control component 4 is preferably a portable device, i.e., a hand-held remote control. Further, control buttons 402 and a communication interface 401 are provided on the portable device. The communication interface 401 is used for wired or wireless communication with the motor component. The control buttons 402 are used to generate control signals, and the motor component drives the hydraulic component to selectively deliver a medium to one of the release chamber and the closing chamber of the hydraulic chamber according to the control signals. Further, the control buttons 402 have a first position and a second position; when the control button 402 is toggled to the first position, such as toggled to the left, at this time, the portable device emits a release signal; when the control button 402 is toggled to the second position, such as toggled to the right, at this time, the portable device emits a closing signal through the communication interface 401. The release signal or the closing signal is then sent to the drive component 2 through the communication interface 401. Preferably, an indication mark, such as left and right arrow indications, is provided on the control button 402 to indicate the toggling direction. More preferably, bumps 403 are provided on the control button 402 to give the operator a tactile perception to indicate the toggling position. For example, bumps 403 are provided on one side of the control button 402 deviating from the middle and not on the other side. When the operator's hand senses the presence of the bumps 403, it is known that a release signal or a closing signal can be emitted when toggling this position. If the operator's hand does not sense the bumps 403, it is known that another control signal can be emitted when toggling this position.

[0098] In one embodiment, the drive component 2 preferably further includes an emergency stop device 22 for cutting off the power supply of the motor component in an emergency. Further, the emergency stop device 22 is provided on the control box. The emergency stop device 22 includes an emergency stop button. Further, the drive component 2 further includes a human-machine interaction interface 23 provided on the control box. Some information can be input through the human-machine interaction interface 23. The information may include at least one of the moving speed of the moving tube, the moving stroke, the medium pressure, etc., and may also include the type of the medical implant, so that the drive component 2 works according to the input information. In the illustrated embodiment, the drive component 2 communicates with the control component 4 in a wired manner. At this time, a signal input port 24 can be provided on the control box, and one end of the signal control line 5 is detachably connected to the signal input port 24, and the other end of the signal control line 5 is connected to the corresponding port on the control component 4. In other embodiments, the drive component 2 communicates with the control component 4 wirelessly. At this time, the signal input port 24 can be used as a signal receiving port for wireless communication. Further, the drive component 2 further includes a control box bracket 25, and the control box is installed on the control box bracket 25 to facilitate arranging the drive component 2 near the operating table through the control box bracket 25. The control box bracket 25 is preferably configured with wheels to facilitate moving on the ground to adjust the position.

[0099] The preferred working mode of the conveying system provided in this embodiment is as follows: Before the operation, set information such as the type of the medical implant, the moving speed of the moving tube, the medium pressure, etc. on the human-machine interaction interface 23. Then, toggle the control button 402 to transmit the control signal to the driving assembly 2. After receiving the control signal, the rotating motor 26 in the driving assembly 2 performs a forward or reverse rotational movement. Through the transmission mechanism 27, the rotational pair is transmitted to the linear module 28. The linear module 28 converts the rotational pair into a linear movement, and then drives the piston 330 to perform a linear movement in the axial direction in the hydraulic cylinder block 30 through the connecting block 29. Further, when the control button 402 is toggled to the left to the first position, a release signal is sent to the motor assembly, causing the rotating motor 26 to perform a forward rotational movement to drive the piston 330 to move Figure 4 in the leftward direction (the third direction) in Figure 4 . At this time, the medium in the release driving chamber in the hydraulic cylinder block 30 is compressed and pushed, passes through the first outlet 310, flows through one of the catheter interfaces 21, and then enters the release chamber of the conveying assembly 1 through the medium conveying catheter 3 and one of the catheter joints 101. When the medium pressure in the release chamber exceeds the axial static friction between the moving part and the fixed tube, the moving part pushes the moving tube to move relative to the fixed tube in the first direction (the first direction can be the proximal direction or the distal direction of the fixed tube). On the contrary, when the control button 402 is toggled to the right to the second position, a closing signal is sent to the motor assembly, causing the rotating motor 26 to perform a reverse rotational movement to drive the piston 330 to move Figure 4 in the rightward direction (the fourth direction) in Figure 4 . At this time, the medium in the closing driving chamber is compressed and pushed, passes through the second outlet 320, flows through the other catheter interface 21, and then enters the closing chamber through the other medium conveying catheter 3 and the other catheter joint 102. And when the medium pressure in the closing chamber exceeds the axial static friction between the moving part and the fixed tube, the moving part pushes the moving tube to move relative to the fixed tube in the second direction; the second direction is opposite to the first direction.

[0100] It should be understood that the hydraulic cylinder body 30 may be pre-stored with a medium. For example, before the medium delivery conduit 3 is connected to the delivery assembly 1, the medium can be sucked into the hydraulic cylinder body 30 through the medium delivery conduit 3 for storage, or the medium can be stored in the hydraulic cylinder body 30 by other suitable means. In addition, the conduit interface 21 on the control box connected to the medium delivery conduit 3 is preferably a quick-release interface, which facilitates the quick disassembly and assembly of the medium delivery conduit 3. In addition, the number of the control buttons 402 can be one or more. If there is one, multiple positions can be set. If there are multiple ones, the corresponding positions can be controlled by different control buttons 402. Additionally, the drive assembly 2 may further include a pressure sensor for detecting the pressure of the medium leading to the release chamber or the closing chamber, such as detecting the medium pressure in the hydraulic cylinder body 30 or in the pipeline. The monitored pressure information can be displayed on the human-machine interaction interface 23. Further, the drive assembly 2 can adjust the currently delivered pressure according to the monitored pressure to ensure the surgical precision. It should also be understood that the medium is mainly an incompressible and highly fluid medium, such as pure water, physiological saline, oil liquid, etc., and physiological saline is preferred. In addition, it should be noted that the structure of the motor assembly includes but is not limited to the implementation manners listed above. Those skilled in the art should know that other structures can also be used to drive the piston to perform reciprocating linear motion.

[0101] After applying the delivery system provided by this embodiment, the overall mass and volume of the actuating element (i.e., the delivery part, also the conduit part) can be reduced, the usability and control precision of the delivery system can be improved. At the same time, the same set of drive part can be reused to complete different surgeries only by replacing the actuating element, which can effectively reduce the cost. In addition, according to different load conditions of the delivery system, as long as a motor with an appropriate output power is selected and the pressure resistance strength of the hydraulic cylinder body is adjusted at the same time, the stable and efficient release and closing operations of the delivery system can be realized, which is convenient to use.

[0102] Next, in combination with several preferred embodiments, the preferred implementation manners of the delivery assembly 1 will be further described. It should be understood that the present invention does not particularly limit the structure of the delivery assembly 1, including but not limited to the implementation manners exemplified in the following preferred embodiments.

[0103] Embodiment 1

[0104] Please refer to Figures 6a - 6b , this Embodiment 1 provides a first delivery assembly 100, which includes a conduit component and a pressure component. The conduit component includes an outer tube assembly and an inner tube assembly. The outer tube assembly is configured as a fixed tube, and the inner tube assembly is configured as a movable tube. The outer tube assembly is sleeved outside the inner tube assembly, and the outer tube assembly and the inner tube assembly can move relative to each other.

[0105] The outer tube assembly includes a fixed head 122, a connecting tube 123, and an outer tube 124 that are axially connected in sequence from the distal end to the proximal end; the fixed head 122 is used to fix the medical implant; the inner tube assembly includes a tapered head 111, a sheath tube 112, and an inner tube 115 that are axially distributed in sequence from the distal end to the proximal end, that is, the proximal end of the tapered head 111 is fixedly connected to the distal ends of both the sheath tube 112 and the inner tube 115. The tapered head 111 is preferably a non-invasive head, such as a non-invasive structure like a cone, a partial sphere, a circle, etc., to prevent, inhibit, or substantially prevent damage to the target tissue. The proximal end of the sheath tube 112 can be closed with the distal end of the outer tube 124 and is used to cover part or all of the medical implant.

[0106] The pressure component includes a hydraulic chamber and a moving member 114. There is one hydraulic chamber and it is arranged inside the catheter component, more specifically, between the outer tube 124 and the inner tube 115. The moving member 114 is movably arranged inside the hydraulic chamber. The moving member 114 divides the hydraulic chamber into an axially arranged closed chamber 116 and a release chamber 117. These two chambers are sealed from each other and are respectively used to convey the medium. Among them, the moving member 114 is fixedly connected to the inner tube 115 to drive the inner tube assembly to move axially relative to the outer tube assembly. Further, a guide wire cavity 113 is provided inside the inner tube 115, and the guide wire cavity 113 is used to provide a passage for the guide wire. Further, a distal sealing ring 121 is preferably provided at the distal end of the hydraulic chamber, and the distal sealing ring 121 is arranged on the fixed head 122. A proximal sealing ring 127 is preferably provided at the proximal end of the hydraulic chamber. More preferably, a sealing ring (not marked) is also provided on the moving member 114.

[0107] The first delivery assembly 100 further includes a handle component, which is arranged at the proximal end of the catheter component. The handle component is fixedly connected to the outer tube assembly. The handle component generally includes a housing 118. The housing 118 sleeves the proximal end of the outer tube assembly, and the inner tube assembly passes through the housing 118. Further, the handle component further includes a pair of catheter connectors, which are fixedly arranged on the housing 118. The pair of catheter connectors includes a closed catheter connector 125 and a release catheter connector 126; the closed catheter connector 125 is used to connect with the closed chamber 116 and is connected to one of the medium delivery catheters 3; the release catheter connector 126 is used to connect with the release chamber 117 and is connected to the other medium delivery catheter 3.

[0108] During actual use, the motor assembly drives the hydraulic assembly to convey the medium to the closed chamber 116 of the hydraulic chamber, and drives the moving member 114 and the inner tube 115 to move towards the proximal end (the first direction) of the outer tube 124 through the pressure of the medium until the sheath tube 112 covers the fixed head 122 and the connecting tube 123, obtaining Figure 6aThe closed state shown, at this time, the distal end of the catheter component is closed, thereby completing the loading of the medical implant or the reset of the delivery assembly; conversely, when the motor assembly drives the hydraulic component to deliver the medium to the release chamber 117 of the hydraulic chamber, it drives the moving member 114 and the inner tube 115 to move outward (in the second direction) towards the distal end of the outer tube 124, causing the sheath tube 112 to move away from the fixed head 122, and finally obtaining Figure 6b The release state shown, at this time, the release of the medical implant can be realized. Preferably, when the control component 4 sends a closing signal to the motor assembly, the hydraulic component delivers the medium to the closing chamber 116 of the hydraulic chamber; conversely, when the control component 4 sends a release signal to the motor assembly, the hydraulic component delivers the medium to the release chamber 117 of the hydraulic chamber.

[0109] Embodiment 2

[0110] Please refer to Figures 7a - 7b , Embodiment 2 provides a second delivery assembly 200, which includes a catheter component and a pressure component. The catheter component includes an outer tube assembly and an inner tube assembly. The outer tube assembly is configured as a movable tube, and the inner tube assembly is configured as a fixed tube. The outer tube assembly is sleeved outside the inner tube assembly, and the outer tube assembly and the inner tube assembly can move relative to each other.

[0111] The outer tube assembly includes a sheath tube 221 and a delivery outer tube 222 that are axially connected in sequence from the distal end to the proximal end; the inner tube assembly includes a tapered head 211, a distal inner tube 212, a fixed head 213, and a proximal inner tube 215 that are axially connected in sequence from the distal end to the proximal end, that is, the proximal end of the tapered head 211 is fixedly connected to the distal end of the distal inner tube 212, the proximal end of the distal inner tube 212 is fixedly connected to the fixed head 213, and the fixed head 213 is fixedly arranged at the distal end of the proximal inner tube 215. The distal end of the sheath tube 221 can form a closure with the proximal end of the tapered head 211 for covering part or all of the medical implant. It should be noted that only the parts different from Embodiment 1 are described in Embodiment 2, and the same parts as Embodiment 1 will not be described in detail, and the same parts can refer to Embodiment 1.

[0112] The pressure component of this embodiment includes a hydraulic chamber and a moving member 225. The hydraulic chamber is one and is arranged inside the catheter component, more specifically, between the sheath 221 and the proximal inner tube 215, and between the delivery outer tube 222 and the proximal inner tube 215. The moving member 225 is movably arranged inside the hydraulic chamber. The moving member 225 divides the hydraulic chamber into an axially arranged release chamber 218 and a closing chamber 219, and the two chambers are sealed from each other. The moving member 225 is connected to the delivery outer tube 222 to drive the outer tube assembly to move axially relative to the inner tube assembly. Further, a guide wire chamber 217 is preferably provided inside the inner tube assembly. Further, a distal sealing ring 214 is preferably provided at the distal end of the hydraulic chamber. The distal sealing ring 214 is usually arranged on the fixed head 213. A proximal sealing ring 216 is preferably provided at the proximal end of the hydraulic chamber. More preferably, a sealing ring is also provided on the moving member 225.

[0113] The second delivery assembly 200 further includes a handle component arranged at the proximal end of the catheter component. The handle component is movably connected to the outer tube assembly, that is, the proximal end of the outer tube assembly can reciprocate inside the handle component. The handle component generally includes a housing 226 which has a cavity 227. The proximal end of the outer tube assembly is arranged inside the cavity 227 and can move. Further, the handle component further includes a pair of catheter connectors movably arranged on the housing 226. The pair of catheter connectors are used to move together with the outer tube assembly. The pair of catheter connectors include a release catheter connector 223 and a closing catheter connector 224; the release catheter connector 223 is connected to the release chamber 218 and is used to be connected to one of the medium delivery catheters 3; the closing catheter connector 224 is connected to the closing chamber 219 and is connected to the other medium delivery catheter 3.

[0114] In actual use, the motor assembly drives the hydraulic assembly to deliver a medium to the release chamber 218 of the hydraulic chamber. By the pressure of the medium, the moving member 225 and the delivery outer tube 222 are driven to move towards the proximal end (the first direction) of the inner tube assembly, so that the sheath 221 moves away from the tapered head 211, obtaining Figure 7b the release state shown in the figure. At this time, the release of the medical implant can be realized. On the contrary, when the motor assembly drives the hydraulic assembly to deliver the medium to the closing chamber 219 of the hydraulic chamber, the moving member 225 and the delivery outer tube 222 are driven to move towards the distal end of the inner tube assembly (i.e., the second direction), so that the sheath 221 approaches the tapered head 211, and finally Figure 7a the closing state shown in the figure is obtained. At this time, the distal end of the catheter component is closed, and the loading of the medical implant or the reset of the delivery assembly can be completed.

[0115] It should be understood that in the first embodiment, the inner tube assembly moves towards the proximal end of the outer tube assembly to close the distal end of the catheter component, and the inner tube assembly moves towards the distal end of the outer tube assembly to release the distal end of the catheter component. The second embodiment is exactly opposite to the first embodiment. In the second embodiment, the outer tube assembly moves towards the proximal end of the inner tube assembly to release the distal end of the catheter component, and the outer tube assembly moves towards the distal end of the inner tube assembly to close the distal end of the catheter component. Generally, the release method of the second embodiment is forward release, and the release method of the first embodiment is reverse release.

[0116] The third embodiment

[0117] Please refer to Figures 8a - 8b , the third embodiment provides a third delivery assembly 300, which includes a catheter component and a pressure component. The catheter component includes an inner tube assembly 31, an intermediate tube assembly 32, and an outer tube assembly 33. The outer tube assembly 33 is sleeved outside the intermediate tube assembly 32 and the inner tube assembly 31. Both the outer tube assembly 33 and the inner tube assembly 31 can move relative to the intermediate tube assembly 32. In addition, the outer tube assembly 33 can be either a movable tube or a fixed tube, and the inner tube assembly 31 can also be either a movable tube or a fixed tube. Therefore, in this embodiment, the number of movable tubes is two.

[0118] Among them: the outer tube assembly 33 includes a proximal sheath 331 and a delivery section outer tube 333; the intermediate tube assembly 32 includes a fixed head 322, a connecting tube 323, and an intermediate tube 324; the inner tube assembly 31 includes a tapered head 311, a distal sheath 312, and an inner tube 313. The proximal end of the proximal sheath 331 is fixedly connected to the distal end of the delivery section outer tube 333, and the two can be integrally or separately formed. The distal end of the connecting tube 323 is fixedly connected to the fixed head 322, and the proximal end of the connecting tube 323 is fixedly connected to the distal end of the intermediate tube 324. The distal end of the inner tube 313 is fixedly connected to the tapered head 311, and the distal end of the distal sheath 312 is fixedly connected to the proximal end of the tapered head 311; the intermediate tube 324 is arranged inside the delivery section outer tube 333, and the intermediate tube 324 is located between the delivery section outer tube 333 and the inner tube 313. The intermediate tube assembly 32 is fixed, and both the outer tube assembly 33 and the inner tube assembly 31 can move relative to the intermediate tube 324. When the outer tube assembly 33 moves relative to the intermediate tube assembly 32, the inner tube assembly 31 can be fixed relative to the intermediate tube assembly 32; when the inner tube assembly 31 moves relative to the intermediate tube assembly 32, the outer tube assembly 33 can be fixed relative to the intermediate tube assembly 32. The proximal sheath 331 and the distal sheath 312 can form a closure to device a medical implant. It should be noted that in the following description, only the parts different from the first embodiment or the second embodiment are targeted, and the parts the same as the first embodiment or the second embodiment will not be described in detail, and the same parts can refer to the first embodiment or the second embodiment.

[0119] The pressure component of this embodiment includes two hydraulic chambers, namely the first hydraulic chamber and the second hydraulic chamber. Both of these two hydraulic chambers are arranged within the catheter component. The first hydraulic chamber is arranged between the outer tube 333 of the delivery section and the intermediate tube 324 and extends to the distal end. The second hydraulic chamber is arranged between the connecting tube 323 and the inner tube 313 and between the intermediate tube 324 and the inner tube 313. A moving member is arranged within each of the two hydraulic chambers. Specifically, a first moving member 325 is arranged within the first hydraulic chamber. The first moving member 325 is connected to the outer tube 333 of the delivery section to drive the axial movement of the outer tube 333 of the delivery section. A second moving member 314 is arranged within the second hydraulic chamber. The second moving member 314 is connected to the inner tube 313 to drive the axial movement of the inner tube 313. The first hydraulic chamber is divided by the first moving member 325 into a release chamber and a closing chamber (not labeled). Preferably, a first distal seal ring 332 (fixed on the outer tube assembly 33) is provided at the distal end of the first hydraulic chamber, and a first proximal seal ring 336 (fixed on the outer tube assembly 33) is provided at the proximal end of the first hydraulic chamber. More preferably, a seal ring (not labeled) is provided on the first moving member 325. The second hydraulic chamber is divided by the second moving member 314 to form a release chamber and a closing chamber (not labeled). Preferably, a second distal seal ring 321 is provided at the distal end of the second hydraulic chamber. The second distal seal ring 321 can be arranged on the fixed head 322. A second proximal seal ring 326 is provided at the proximal end of the second hydraulic chamber. More preferably, a seal ring (not labeled) is provided on the second moving member 314.

[0120] The third delivery assembly 300 further includes a handle component 34 arranged at the proximal end of the catheter component. The handle component 34 generally includes a housing 342 which has a cavity for the inner tube assembly 31 and the outer tube assembly 33 to pass through. Further, the handle component 34 also includes two pairs of catheter connectors. One pair of catheter connectors is movably arranged on the housing 342, and the other pair of catheter connectors is fixedly arranged on the housing 342. In this embodiment, one pair of catheter connectors includes a first release catheter connector 334 and a first closing catheter connector 335, and the other pair of catheter connectors includes a second closing catheter connector 327 and a second release catheter connector 328. The first release catheter connector 334 and the first closing catheter connector 335 are respectively communicated with the release chamber and the closing chamber in the first hydraulic chamber, and these two catheter connectors can move on the housing 342. The second closing catheter connector 327 and the second release catheter connector 328 are respectively communicated with the closing chamber and the release chamber in the second hydraulic chamber and are fixed on the housing 342. Preferably, a guiding groove 341 is provided on the housing 342 to provide guidance for the movement of the first release catheter connector 334 and the first closing catheter connector 335, so as to make the movement accuracy higher. These catheter connectors are all connected to the medium delivery catheter 3.

[0121] In actual use, since the conveying assembly of this embodiment is provided with two hydraulic chambers, it can achieve bidirectional release, that is, it can drive the movement of the inner tube assembly relative to the middle tube assembly to achieve the closing and release of the distal end of the conveying assembly, and it can also drive the movement of the outer tube assembly relative to the middle tube assembly to achieve the closing and release of the distal end of the conveying assembly. With such a structure, it is more flexible and convenient to use, especially suitable for the release of mitral valve prostheses or tricuspid valves. The specific operation method can refer to the above-mentioned Embodiment 1 and Embodiment 2, and will not be described in detail here.

[0122] Furthermore, in order to realize the switching between different hydraulic chambers, the driving assembly 2 further includes a commutation control module for performing the switching between different hydraulic chambers. The commutation control module is respectively connected to the hydraulic assembly and the conveying assembly. The commutation control module is used to selectively connect the hydraulic assembly to one of the multiple hydraulic chambers, so that the hydraulic assembly selectively conveys the medium to one of the multiple hydraulic chambers. Preferably, when there are multiple hydraulic chambers, the multiple hydraulic chambers include but are not limited to two, and there can be more hydraulic chambers, and only the same motor assembly and the same hydraulic assembly are configured for the multiple hydraulic chambers.

[0123] Preferably, the commutation control module includes an electromagnetic directional valve 6, and the conversion of different channel groups is carried out through the electromagnetic directional valve 6 to realize the switching between different hydraulic chambers. The electromagnetic directional valve 6 includes a plurality of valve groups and two connection ports; the two connection ports are connected to the hydraulic assembly, specifically connecting the first outlet and the second outlet; the plurality of valve groups are connected to the conveying assembly, and each valve group includes two valves; each valve group is used to control the connection of a corresponding hydraulic chamber to the hydraulic assembly; when the two connection ports are communicated with one of the plurality of valve groups, a corresponding hydraulic chamber is connected to the hydraulic assembly. In addition, multiple pairs of conduit joints are arranged on the handle component, each pair of conduit joints is connected to the release chamber and the closing chamber of a corresponding hydraulic chamber, and the plurality of valve groups are connected to the multiple pairs of conduit joints through a medium conveying conduit.

[0124] It should be known that the commutation control module of the present invention includes but is not limited to the electromagnetic directional valve 6, and other switching methods can also be used, which are not limited herein.

[0125] Please refer to Figures 9a - 9b, in one embodiment, the electromagnetic directional valve 6 includes a housing 61, on which a first directional valve 62, a second directional valve 63, a third directional valve 64, and a fourth directional valve 65 are provided. A first connection port 66 and a second connection port 67 are also provided on the housing 61; the first connection port 66 and the second connection port 67 are respectively used to connect a pair of conduit interfaces 21 on the control box; the four directional valves are respectively connected to the above four conduit joints one by one through a medium delivery conduit 3. Thus, by using one electromagnetic directional valve 6, it is possible to separately communicate with the first hydraulic chamber and the second hydraulic chamber only by providing a pair of conduit interfaces on the control box, further streamlining the structure and facilitating control. When it is necessary to switch the hydraulic chamber, only the push rod 68 is driven by the electric control module to adjust the directional valve to the corresponding channel, and a sealing ring 69 is provided on the push rod 68. In this embodiment, from left to right, the first directional valve 62, the third directional valve 64, the fourth directional valve 65, and the second directional valve 63 are arranged in sequence; when the first connection port 66 is communicated with the first directional valve 62 and the second connection port 67 is communicated with the second directional valve 63, the first hydraulic chamber is in a working state, that is Figure 9a as shown; when the first connection port 66 is communicated with the third directional valve 64 and the second connection port 67 is communicated with the fourth directional valve 65, the second hydraulic chamber is in a working state, that is Figure 9b as shown.

[0126] Embodiment Four

[0127] Please refer to Figures 10a - 10b , Embodiment Four provides a fourth conveying assembly 400, which includes a conduit component and a pressure component 43. The conduit component includes an inner tube assembly 41 and an outer tube assembly 42. The outer tube assembly 42 is configured as a movable tube, and the inner tube assembly 41 is configured as a fixed tube, or the outer tube assembly 42 is configured as a fixed tube and the inner tube assembly 41 is configured as a movable tube. The outer tube assembly 42 is sleeved outside the inner tube assembly 41, and the outer tube assembly 42 and the inner tube assembly 41 can move relative to each other.

[0128] The inner tube assembly 41 includes a tapered head 411, a distal inner tube 412, a fixed head 413, and a proximal inner tube 414. The proximal end of the tapered head 411 is fixedly connected to the distal end of the distal inner tube 412, the proximal end of the distal inner tube 412 is fixedly connected to the fixed head 413, and the proximal end of the fixed head 413 is fixedly connected to the proximal inner tube 414; the outer tube assembly 42 includes a sheath tube 421 and a conveying outer tube 422 that are axially connected in sequence from the distal end to the proximal end. The sheath tube 421 can cooperate with the tapered head 411 to form a closure to load a medical implant, and the sheath tube 421 and the conveying outer tube 422 can be integrally or separately formed.

[0129] The pressure component 43 is disposed at the proximal end of the delivery assembly and includes a hydraulic chamber 433 and a moving member 423. The fourth delivery assembly 400 further includes a handle member 44 disposed at the proximal end of the catheter member and including a housing. The hydraulic chamber 433 is a single one and is disposed within the housing of the handle member 44, and the hydraulic chamber 433 does not extend into the catheter member. The moving member 423 is movably disposed within the hydraulic chamber 433. The moving member 423 divides the hydraulic chamber 433 into an axially arranged release chamber and a closing chamber, and the two chambers are sealed from each other. And the moving member 423 is fixedly connected to the delivery outer tube 422 to drive the outer tube assembly 42 to move axially relative to the inner tube assembly 41. In another embodiment, the moving member 423 is fixedly connected to the proximal inner tube to drive the inner tube assembly 41 to move axially relative to the outer tube assembly 42. Preferably, a distal sealing ring 431 is preferably provided at the distal end of the hydraulic chamber 433, and a proximal sealing ring 432 is preferably provided at the proximal end of the hydraulic chamber 433. More preferably, a sealing ring is also provided on the moving member 423.

[0130] Similarly, a pair of catheter connectors are fixedly provided on the handle member 44, namely a release catheter connector 434 and a closing catheter connector 435. The release catheter connector 434 is connected to the release chamber of the hydraulic chamber 433, and the closing catheter connector 435 is connected to the closing chamber of the hydraulic chamber 433.

[0131] Further, considering that the housing of the handle member 44 is usually made of a polymer material and the pressure it can withstand is relatively easily limited, to overcome this problem, the pressure component 43 is designed to further include another housing (not labeled). The other housing is disposed within the housing of the handle member 44. The hydraulic chamber is disposed within the other housing, and the material of the other housing is a metal material with good biocompatibility, so that the hydraulic chamber 433 can withstand a greater pressure, further improving the delivery capacity of the delivery system to adapt to the delivery of different implants.

[0132] The difference from the above embodiment is that the hydraulic chamber in this embodiment is disposed within the handle member, so that the position of the hydraulic chamber is at the proximal end of the delivery assembly. This avoids setting the hydraulic chamber on the catheter portion of the delivery assembly, thereby avoiding safety problems caused by leakage of the medium chamber when the distal end of the catheter is delivered into the patient's body, making the instrument safer. The operation mode of the delivery assembly in this embodiment is similar to that of the above embodiment, so it will not be described in detail. Among them Figure 10b is the delivery assembly in the release state, Figure 10a is the delivery assembly in the closed state.

[0133] In addition, it should also be understood that one or more hydraulic chambers 433 can be provided in this embodiment. The multiple hydraulic chambers include but are not limited to two. The moving member in each hydraulic chamber drives a corresponding moving tube to move. For example, the moving tube can be an inner tube assembly and an outer tube assembly. The two hydraulic chambers respectively drive the inner tube assembly and the outer tube assembly to move. When the number of hydraulic chambers is two or more, the working principle and the setting of the conduit joints are similar to those in Embodiment Four, and will not be described in detail here.

[0134] Embodiment Five

[0135] In any of the above embodiments, a hydraulic chamber (not labeled) for controlling bending can be further provided inside the handle member. The hydraulic chamber for controlling bending is also divided into a release chamber and a closed chamber by its moving member. In this article, in order to distinguish it from the hydraulic chamber for driving the moving tube, the hydraulic chamber for controlling bending is defined as the bending control chamber.

[0136] Please refer to Figure 11a and in combination with Figure 1 , the conveying assembly 1 further includes a bending control member for controlling the bending of the distal end of the conveying assembly 1. The bending control member includes a bending control mechanism and a bending control chamber. The bending control mechanism is used to control the bending of the conduit member. The bending control chamber drives the bending control mechanism to move through hydraulic pressure to adjust the bending state of the conduit member. Specifically, the motor assembly is used to drive the hydraulic assembly to convey the medium to the bending control chamber. It should be understood that the hydraulic chamber for driving the moving tube and the hydraulic chamber for driving the bending control mechanism can share a set of motor assembly and hydraulic assembly, further simplifying the structure of the conveying system and the operation. In addition, compared with the electric or manual control of the bending of the conduit member, the operation is simpler and more convenient, further reducing the operation time, and the volume of the handle can also be reduced, and it is convenient to adapt to a larger force condition, with stronger adaptability.

[0137] Furthermore, the bending control mechanism includes a wire 51, a wire fixing member 52, and a lead screw 55. The distal end of the wire 51 is fixed to the distal end of the conduit member, for example, fixed to the inner tube assembly or the outer tube assembly. The proximal end of the wire 51 is connected to the distal end of the wire fixing member 52. The proximal end of the wire fixing member 52 is fixedly connected to the lead screw 55. The lead screw 55 passes through the bending control chamber (not labeled). The forward and backward movement of the lead screw 55 in the axial direction drives the forward and backward movement of the wire 51, thereby realizing the bending control. That is, the bending control chamber controls the tightness of the wire 51, thereby realizing the control of the conveying assembly 1 and realizing the bending control of the distal end of the conveying assembly. Please refer to Figure 11b , the distal end of the conduit member of the conveying assembly is bent under the pulling of the wire 51. With such a setting, compared with other bending control methods, the structure is simpler and the control is more convenient.

[0138] Similarly, a pair of catheter connectors, such as catheter connectors 53 and 54, are also provided on the outer shell of the handle component and are respectively used to connect to the release chamber and the closing chamber of the bending control chamber. Preferably, sealing rings are provided at the distal end and the proximal end of the bending control chamber, and more preferably, sealing rings are also provided on the moving member in the bending control chamber.

[0139] In summary, the delivery system provided by the present invention can be adapted to a variety of medical implants. Especially when there are multiple hydraulic chambers in the delivery assembly, the switching between hydraulic chambers is achieved through the commutation control module, and the control of all hydraulic chambers is realized by only one driving component, which simplifies the structure of the driving part and is more suitable for the popularization and application of the delivery system of the present invention. Moreover, for the delivery system with multiple hydraulic chambers, the electromagnetic directional valve is further used to realize the conversion of different channel groups and the switching between different hydraulic chambers, with a more simplified structure, more conducive to regulation and more convenient operation. Generally, the delivery system provided by the present invention has a stable structure, high transmission efficiency, strong usability, and can be adapted to delivery systems of various specifications, and the purpose of reducing the cost of a single operation is achieved by replacing different actuators.

[0140] It should also be known that the preferred embodiments of the present invention are as described above, but are not limited to the scope disclosed in the above preferred embodiments. For example, the present invention does not make a special limitation on the implementation manner of driving the piston to move by the motor, as long as the reciprocating movement of the piston can be finally realized by the power output by the motor.

[0141] The various embodiments in this specification are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the art of the present invention based on the above disclosure are within the protection scope of the present invention.

Claims

1. A delivery system for a medical implant, characterized in that, It includes a control component, as well as a connected delivery component and a drive component; the drive component includes a connected motor component and a hydraulic component; the control component is communicatively connected to the motor component; the motor component is configured to drive the hydraulic component to deliver a medium to a hydraulic chamber under the control of the control component; The delivery component includes a handle part, a conduit part, and a pressure part; the handle part is arranged at the proximal end of the conduit part; the conduit part includes a fixed tube and a movable tube; the fixed tube and the movable tube are capable of relative movement; The pressure part includes a hydraulic chamber and a movable member; the hydraulic chamber is arranged within the handle part; the movable member is movably arranged within the hydraulic chamber; the movable tube is connected to the movable member; the motor component is configured to drive the hydraulic component to deliver a medium to the hydraulic chamber so as to drive the movable member and the movable tube to move relative to the fixed tube; The number of the hydraulic chambers is multiple, and the number of both the motor component and the hydraulic component is one; the drive component further includes a commutation control module, the commutation control module is respectively connected to the hydraulic component and the delivery component, and the commutation control module is configured to selectively connect the hydraulic component to one of the multiple hydraulic chambers so that the hydraulic component selectively delivers a medium to one of the multiple hydraulic chambers; The movable member divides the hydraulic chamber into an axially arranged release chamber and a closing chamber; When the hydraulic component delivers a medium to the release chamber, the movable member and the movable tube move relative to the fixed tube in a first direction; when the hydraulic component delivers a medium to the closing chamber, the movable member and the movable tube move relative to the fixed tube in a second direction; The hydraulic component includes a hydraulic cylinder body and a piston; the piston is movably arranged within the hydraulic cylinder body, and the piston divides the space within the hydraulic cylinder body into a release drive chamber and a closing drive chamber; The release drive chamber has a first outlet, and the closing drive chamber has a second outlet; the first outlet and the second outlet are respectively connected to the release chamber and the closing chamber through a medium delivery conduit; The drive component, the delivery component, and the control component are arranged separately from each other; the drive component further includes a control box, and both the motor component and the hydraulic component are arranged within the control box.

2. The delivery system of the medical implant according to claim 1, wherein, The conduit part includes an outer tube assembly and an inner tube assembly, the outer tube assembly is arranged outside the inner tube assembly and is capable of relative movement; One of the outer tube assembly and the inner tube assembly is configured as the fixed tube, and the other is configured as the movable tube, or either one of the outer tube assembly and the inner tube assembly can switch between the fixed tube and the movable tube.

3. The delivery system of the medical implant according to claim 2, wherein, When either the outer tube assembly or the inner tube assembly can be switched between a fixed tube and a movable tube, the number of the hydraulic chambers is two, and one movable member is arranged in each hydraulic chamber. The movable member in one of the hydraulic chambers is used to drive the outer tube assembly to move, and the movable member in the other hydraulic chamber is used to drive the inner tube assembly to move.

4. The delivery system of the medical implant according to claim 2, characterized in that, When the outer tube assembly is a movable tube, the hydraulic chamber includes a first hydraulic chamber, and the first hydraulic chamber is used to receive a medium to drive the outer tube assembly to move. The first hydraulic chamber is connected to a pair of conduit connectors, and the pair of conduit connectors are movably arranged on the handle member. A guide groove is arranged on the handle member, and the pair of conduit connectors are used to move in the guide groove.

5. The delivery system of the medical implant according to claim 1, wherein, A pair of conduit interfaces are arranged on the control box, and the pair of conduit interfaces are connected to the hydraulic assembly; the pair of conduit interfaces are also connected to the hydraulic chamber through a medium delivery conduit; A human-machine interface is also arranged on the control box; the human-machine interface is used to input information, and the information includes at least one of the moving speed, moving stroke and medium pressure of the movable tube.

6. The delivery system of a medical implant according to claim 1, wherein When the number of the movable tubes is multiple, the number of the hydraulic chambers is also multiple, and one movable member is arranged in each hydraulic chamber. The movable member in each hydraulic chamber is used to drive a corresponding movable tube to move, and the hydraulic assembly is used to selectively deliver the medium to one of the multiple hydraulic chambers.

7. The delivery system of the medical implant according to claim 1, characterized in that, The commutation control module includes an electromagnetic commutation valve; the electromagnetic commutation valve includes a plurality of valve groups and two connection ports; the two connection ports are connected to the hydraulic assembly; the plurality of valve groups are connected to the delivery assembly, and each valve group includes two valves; each valve group is used to control the connection between a corresponding hydraulic chamber and the hydraulic assembly; when the two connection ports are communicated with one of the plurality of valve groups, the corresponding hydraulic chamber is connected to the hydraulic assembly.

8. The delivery system of a medical implant according to claim 1, wherein, The number of the hydraulic chambers is two, namely a first hydraulic chamber and a second hydraulic chamber; The conduit component includes an outer tube assembly, an intermediate tube and an inner tube assembly. The outer tube assembly is arranged outside the inner tube assembly and the intermediate tube; the outer tube assembly includes a proximal sheath tube and a distal delivery tube; the distal end of the distal delivery tube is fixedly connected to the proximal end of the proximal sheath tube; the outer tube assembly and the inner tube assembly can move relative to the intermediate tube; the intermediate tube is arranged inside the distal delivery tube and is located between the distal delivery tube and the inner tube; one of the outer tube assembly and the inner tube assembly is selectively configured as a movable tube; The inner tube assembly includes a tapered head, a distal sheath tube and an inner tube. The distal end of the inner tube is connected to the tapered head, and the distal end of the distal sheath tube is fixedly connected to the proximal end of the tapered head; A second moving member is arranged in the second hydraulic chamber, and the second moving member is connected to the inner tube to drive the inner tube to move; a first moving member is arranged in the first hydraulic chamber, and the first moving member is connected to the outer tube of the conveying section to drive the outer tube of the conveying section to move.

9. The delivery system of the medical implant according to claim 1, characterized in that, Sealing rings are respectively arranged at the proximal end and the distal end of the hydraulic chamber, and a sealing ring is arranged on the moving member.

10. The delivery system of the medical implant according to claim 1, wherein, The conveying assembly further includes a bending control component, the bending control component includes a bending control chamber and a bending control mechanism, the bending control mechanism is used to control the bending of the catheter component, and the bending control chamber is used to drive the bending control mechanism to move through hydraulic pressure to adjust the bending state of the catheter component.

11. The delivery system of the medical implant according to claim 1, characterized in that, The control assembly includes a control button and a communication interface; the communication interface is used for wired or wireless communication with the motor assembly; the control button is used to generate a control signal; the motor assembly is used to drive the hydraulic assembly to selectively convey a medium to one of the release chamber and the closing chamber of the hydraulic chamber according to the control signal.

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