CN115177402A

CN115177402A - Medical implant delivery system

Info

Publication number: CN115177402A
Application number: CN202110368828.2A
Authority: CN
Inventors: 梅杰; 吴旭闻; 桂宝珠; 陈国明
Original assignee: Shanghai Microport Cardioflow Medtech Co Ltd
Current assignee: Shanghai Microport Cardioflow Medtech Co Ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2022-10-14
Also published as: WO2022213907A1; ES2956229A2

Abstract

The invention relates to a medical implant delivery system, which comprises a delivery assembly and a driving assembly which are connected; the driving assembly comprises a motor assembly and a hydraulic assembly; the conveying assembly comprises a conduit part and a pressure part, wherein the conduit part comprises a fixed pipe and a movable pipe; the pressure component comprises a hydraulic chamber and a moving part; the moving piece is movably arranged in the hydraulic chamber; the moving pipe is connected with the moving piece; the motor assembly is used for driving the hydraulic assembly to convey media to the hydraulic chamber so as to drive the moving member and the moving pipe to move relative to the fixed pipe. The invention can simplify the conveying operation steps, realize stable and efficient operation of the conveying system, reduce the operation time and improve the success rate of the operation.

Description

Medical implant delivery system

Technical Field

The invention relates to the technical field of medical instruments, in particular to a medical implant conveying system.

Background

Transcatheter vascular stent implantation is a common treatment scheme for minimally invasive cardiovascular diseases in recent years, and the principle is that an artificial stent is loaded into a delivery system, and then the artificial stent is released in a proper position through a catheter of the delivery system. In heart valve diseases, the transcatheter vascular stent implantation avoids the huge trauma of cardiac arrest to patients after the chest is opened in the conventional surgical treatment.

This technique requires the operation of the stent-valve prosthesis by the doctor to accurately and stably release the stent-valve prosthesis in a proper position. The conveying system that uses usually is because of adopting mechanical structure transmission, so ubiquitous operating handle quality is big, and is bulky, can't operate freely like surgical operation instrument commonly used, and the doctor is also low to conveying system's control precision moreover, and simultaneously, the driven conveying system operation of traditional mechanical structure is comparatively complicated, and it is long when having indirectly increased the operation, has directly influenced the operation result.

Disclosure of Invention

The invention aims to provide a medical implant conveying system, which can simplify operation steps and realize stable and efficient operation of the conveying system, thereby reducing the operation time and improving the success rate of operations, and only needs to replace an executing element in different operations, thereby effectively reducing the cost.

In order to achieve the above object, the present invention provides a medical implant delivery system, which comprises a delivery assembly and a driving assembly connected with each other; the driving assembly comprises a motor assembly and a hydraulic assembly which are connected;

the delivery assembly includes a conduit component and a pressure component; the catheter component comprises a fixed tube and a movable tube, and the fixed tube and the movable tube can move relatively;

the pressure component comprises a hydraulic chamber and a moving part; the moving piece is movably arranged in the hydraulic chamber; the moving pipe is connected with the moving piece; the motor assembly is used for driving the hydraulic assembly to convey media to the hydraulic chamber so as to drive the moving member and the moving pipe to move relative to the fixed pipe.

Optionally, the moving member divides the hydraulic chamber into a release chamber and a closed chamber which are axially arranged;

when the hydraulic assembly delivers a medium to the release cavity, the moving member and the moving tube move in a first direction relative to the fixed tube;

when the hydraulic assembly delivers a medium to the closed cavity, the moving member and the moving tube move in a second direction relative to the fixed tube.

Optionally, the catheter component comprises an outer tube assembly and an inner tube assembly, the outer tube assembly is arranged outside the inner tube assembly and can move relatively;

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, or either one of the outer tube assembly and the inner tube assembly is switchable between a fixed tube and a moving tube.

Optionally, when one of the outer tube assembly and the inner tube assembly is configured to fix a tube and the other is configured to move a tube, the number of the hydraulic chambers is one, one of the moving members is disposed in one of the hydraulic chambers, and one of the moving members is used for driving the outer tube assembly or the inner tube assembly to move;

when any one of the outer pipe assembly and the inner pipe assembly can be switched between a fixed pipe and a movable pipe, the number of the hydraulic chambers is two, one moving member is arranged in each hydraulic chamber, the moving member in one hydraulic chamber is used for driving the outer pipe assembly to move, and the moving member in the other hydraulic chamber is used for driving the inner pipe assembly to move.

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

the inner tube assembly comprises a conical head, a sheath tube and an inner tube; the conical head is respectively and fixedly connected with the sheath tube and the inner tube; the outer tube assembly comprises a fixing head, a connecting tube and an outer tube which are sequentially connected from the far end to the near end in the axial direction; the moving piece is fixedly connected with the inner pipe; the inner pipe can movably penetrate through the fixing head, the connecting pipe and the outer pipe in sequence; alternatively, when the number of hydraulic chambers is one and the outer tube assembly is configured to move a tube:

the outer tube assembly comprises a sheath tube and a conveying outer tube which are connected; the inner tube assembly comprises a conical head, a far-end inner tube, a fixed head and a near-end inner tube; the proximal end of the conical head is connected with the distal end of the distal end inner tube, the proximal end of the distal end inner tube is connected with the fixing head, and the fixing head is fixedly arranged at the distal end of the proximal end inner tube; the moving member is connected with the conveying outer pipe.

Optionally, the delivery assembly further comprises a handle member disposed at the proximal end of the catheter member;

when the outer tube assembly is the removal pipe, the hydraulic pressure cavity includes first hydraulic pressure cavity, first hydraulic pressure cavity is used for receiving medium in order to order about the outer tube assembly removes, just a pair of pipe joint is connected to first hydraulic pressure cavity, and is a pair of pipe joint movably sets up on the handle part, just be provided with the guide way on the handle part, it is a pair of pipe joint is used for in the guide way removes.

Optionally, the driving assembly further comprises a control box, and the motor assembly and the hydraulic assembly are both arranged in the control box; the control box is provided with a pair of conduit interfaces, and the conduit interfaces are connected with the hydraulic assembly; the pair of conduit interfaces are also connected with the release cavity and the closed cavity of the hydraulic chamber through medium conveying conduits;

a man-machine interaction interface is also arranged on the control box; the human-computer interaction interface is used for inputting information, and the information comprises at least one of the moving speed, the moving stroke and the medium pressure of the moving pipe.

Optionally, the number of the moving pipes is one or more;

when the number of the moving pipes is one, the number of the hydraulic chambers is also one, and one moving piece is arranged in one hydraulic chamber to drive one moving pipe to move;

when the number of the moving pipes is multiple, the number of the hydraulic chambers is also multiple, one moving member is arranged in each hydraulic chamber, the moving member in each hydraulic chamber is used for driving the corresponding moving pipe to move, and the hydraulic assembly is used for selectively conveying a medium to one of the hydraulic chambers.

Optionally, the number of the hydraulic chambers is multiple, and the number of the motor assemblies and the number of the hydraulic assemblies are both one;

the drive assembly further comprises a reversing control module, the reversing control module is respectively connected with the hydraulic assembly and the conveying assembly, and the reversing control module is used for enabling the hydraulic assembly to be selectively connected with one of the plurality of hydraulic chambers so as to enable the hydraulic assembly to selectively convey media to one of the plurality of hydraulic chambers.

Optionally, the reversing control module comprises a solenoid reversing valve; the electromagnetic directional valve comprises a plurality of valve groups and two connecting ports; the two connecting ports are connected with the hydraulic assembly; a plurality of valve groups are connected with the conveying assembly, and each valve group comprises two valves; each valve group is used for controlling the connection of a corresponding hydraulic chamber and the hydraulic component; when the two connecting ports are communicated with one of the valve groups, the corresponding hydraulic chamber is connected with the hydraulic component.

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

the catheter component comprises an outer tube assembly, an intermediate tube, and an inner tube assembly, the outer tube assembly disposed outside of the inner tube assembly and the intermediate tube; the outer tube assembly and the inner tube assembly are movable relative to the intermediate tube; the middle pipe is arranged in the conveying section outer pipe and is positioned between the conveying section outer pipe and the inner pipe; one of the outer tube assembly and the inner tube assembly is selectively configured to move a tube;

the outer tube assembly comprises a proximal sheath tube and a delivery section outer tube; the far end of the outer tube of the conveying section is fixedly connected with the near end of the near-end sheath tube;

the inner tube assembly comprises a conical head, a distal end sheath tube and an inner tube, the distal end of the inner tube is connected with the conical head, and the distal end of the distal end sheath tube is fixedly connected with the proximal end of the conical head;

a second moving member is arranged in the second hydraulic chamber and connected with the inner pipe so as to drive the inner pipe to move; and a first moving member is arranged in the first hydraulic chamber and is connected with the conveying section outer pipe so as to drive the conveying section outer pipe to move.

Optionally, the proximal end and the distal end of the hydraulic chamber are respectively provided with a sealing ring, and the moving member is provided with a sealing ring.

Optionally, the conveying assembly further comprises a bending control component, the bending control component comprises a bending control chamber and a bending control mechanism, the bending control mechanism is used for controlling the bending of the conduit component, and the bending control chamber is used for adjusting the bending state of the conduit component through the movement of the bending control mechanism under the hydraulic driving.

Optionally, the conveying system further comprises a control assembly in communication with the motor assembly; the motor assembly drives the hydraulic assembly to convey media to the hydraulic chamber under the control of the control assembly; the control assembly is separately arranged from the conveying assembly and the driving assembly.

Optionally, the control assembly comprises 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 for generating a control signal; the motor assembly is used for driving the hydraulic assembly to selectively convey media to one of the release cavity and the closed cavity of the hydraulic chamber according to the control signal.

Optionally, the drive assembly is arranged separately from the transport assembly.

Optionally, the hydraulic chamber is disposed within the catheter component and extends along an axis of the catheter component to a distal end, or the hydraulic chamber is disposed within a handle component disposed at a proximal end of the catheter component.

The conveying system of the medical implant provided by the invention adopts electric and hydraulic pressure to drive the catheter component to move so as to realize loading and releasing of the medical implant, so that the same conveying system can bear loads with different sizes, the same conveying system can provide pushing force with different sizes, and different medical implants can be conveyed, and therefore, the same conveying system can be suitable for different medical implants and has good flexibility. In addition, the delivery system of the medical implant provided by the invention combines electric and hydraulic pressure to drive the catheter component to move, reduces the overall mass and volume of an actuating element (namely a catheter part), improves the usability, also improves the control precision of the delivery operation, can repeatedly utilize the same set of driving assembly, finishes different operations and only needs to replace the actuating element, and can effectively reduce the operation cost.

The conveying system of the medical implant provided by the invention preferably separates the driving component from the conveying component (namely the driving component is not arranged on the conveying component), further reduces the volume and the quality of the catheter part, improves the conveying control precision of the medical implant, and avoids the problem that the operation of an operator is influenced by excessive load on the conveying part, thereby improving the convenience of the operation and the success rate of the operation. In addition, because the drive assembly is independent of the conveying assembly, the mutual interference between the drive assembly and the conveying assembly is small, so when the conveying assembly is modified, for example, when a new function is given to the conveying assembly, the limitation caused by the drive assembly is small, the difficulty of modifying the conveying assembly is reduced, the function of the conveying system is favorably expanded, and the service performance of the conveying system is improved.

The medical implant delivery system provided by the invention is simple to operate, is convenient for a doctor to operate, and particularly has higher safety when the hydraulic chamber is arranged at the proximal end (namely in the handle) of the delivery assembly compared with the hydraulic chamber arranged at the distal end (namely in the catheter component) of the delivery assembly.

The conveying system of the medical implant provided by the invention can be configured with a plurality of hydraulic chambers, and the switching among the hydraulic chambers is realized through the reversing control module, so that the control of all the hydraulic chambers is realized by only using one driving assembly, the structure of the driving part is simplified, and the popularization and the use of the conveying system are facilitated.

Drawings

It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the invention and do not constitute any limitation to the scope of the invention. In the drawings:

FIG. 1 is a schematic illustration of the construction of a conveyor assembly in a conveyor system in a preferred embodiment of the invention;

FIG. 2 is a schematic block diagram of the drive assembly and control assembly in wired communication in the delivery system in a preferred embodiment of the present invention;

FIG. 3 is a schematic diagram of the control box in the drive assembly in the preferred embodiment of the present invention;

FIG. 4 is a schematic structural view of a drive assembly in a preferred embodiment of the invention;

FIG. 5 is a schematic structural view of a control assembly in a preferred embodiment of the present invention;

FIG. 6a is an axial cross-sectional view of a delivery assembly in a first embodiment of the invention, as closed;

FIG. 6b is an axial cross-sectional view of the delivery assembly at release in accordance with one embodiment of the present invention;

FIG. 7a is an axial cross-sectional view of a second embodiment of the delivery assembly of the present invention as it is closed;

FIG. 7b is an axial cross-sectional view of the delivery assembly of the second embodiment of the present invention as released;

FIG. 8a is an axial cross-sectional view of a third embodiment of the delivery assembly of the present invention as it is closed;

FIG. 8b is an axial cross-sectional view of the delivery assembly of the third embodiment of the present invention when released;

FIG. 9a is a schematic diagram of the electromagnetic directional valve in the third embodiment of the present invention switched to a configuration in which one of the hydraulic chambers is communicated;

fig. 9b is a schematic diagram of the electromagnetic directional valve in the third embodiment of the invention switched to the structure that makes another hydraulic chamber communicated;

FIG. 10a is an axial cross-sectional view of a delivery assembly according to a fourth embodiment of the present invention, shown closed;

FIG. 10b is an axial cross-sectional view of the delivery assembly of the fourth embodiment of the present invention as released;

FIG. 11a is a schematic structural diagram of a bending control unit according to a fifth embodiment of the present invention;

FIG. 11b is a schematic view of a curve-controlling member controlling the distal curve of a catheter component according to a fifth embodiment of the present invention.

The reference numerals are illustrated below:

1-a delivery assembly; 101. 102-a catheter adapter;

2-a drive assembly; 21-a catheter hub; 22-emergency stop device; 23-human-computer interaction interface; 24-a signal input port; 25-control box support; 26-a rotating electrical machine; 27-a transmission mechanism; 28-a linear module; 29-connecting block; 30-a hydraulic cylinder; 310-a first outlet; 320-a second outlet; 330-a piston;

3-a media delivery conduit;

4-a control component;

401 — a communication interface; 402-control buttons; 403-bumps;

5-signal control line;

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

100-a first delivery assembly; 121-distal sealing ring; 122-a fixed head; 123-connecting pipe; 124-outer tube; 125-closure catheter joint; 126-release catheter hub; 127-a proximal seal ring; 111-a cone head; 112-sheath; 113-a guidewire lumen; 114-a moving member; 115-an inner tube; 116-a closed cavity; 117-release chamber; 118-a housing;

200-a second delivery assembly; 221-sheath; 222-a delivery outer tube; 223-release catheter hub; 224-a closed vessel connector; 225-a moving member; 226-a housing; 227-cavity; 211-a cone head; 212-a distal inner tube; 213-a fixed head; 214-distal sealing ring; 215-a proximal inner tube; 216-a proximal seal ring; 217-guidewire lumen; 218-a release chamber; 219-a closed cavity; (ii) a

300-a third transport assembly;

31-an inner tube assembly; 311-a cone head; 312-a distal sheath; 313-an inner tube; 314-a second moving part;

32-a middle tube assembly; 321-a second distal seal ring; 322-a fixation head; 323-connecting pipe; 324-an intermediate tube; 325 — a first moving part;

33-an outer tube assembly; 331-a proximal sheath; 332-a first distal seal ring; 333-conveying section outer tube;

a pressure member: 325 — a first moving part; 332-a first distal seal ring; 336-a first proximal seal ring; 314-a second moving part; 321-a second distal seal ring; 326-a second proximal seal ring;

34-a handle member; 341-guide groove; 342-a housing; 334-a first release catheter hub; 335-a first closed conduit fitting; 327-a second closed conduit fitting; 328-a second release conduit fitting;

400-a fourth conveyor assembly; 41-an inner tube assembly; 411-a cone head; 412-distal inner tube; 413-a stationary head; 414-a proximal inner tube; 42-an outer tube assembly; 421-sheath; 422-conveying the outer tube; 43-a pressure member; 433-a hydraulic chamber; 423-moving member; 44-a handle member; 431-distal sealing ring; 432-proximal seal ring; 434-release catheter hub; 435-closed vessel connector;

51-silk thread; 52-wire fixation; 55-a screw rod; 53. 54-catheter adapter.

Detailed Description

To further clarify the objects, advantages and features of the present invention, a more particular description of the invention will be rendered by reference to the appended drawings. It is to be noted that the drawings are in simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. As used in this specification, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise. The terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the following description, for convenience of description, "distal" and "proximal" are used; "distal" is the side away from the operator of the delivery system, i.e., the end that first enters the body; "proximal" is the side proximal to the operator of the delivery system; "axial" refers to a direction along the axis of the transport assembly. Furthermore, in the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.

The core idea of the invention is to provide a delivery system for a medical implant, comprising a delivery assembly and a drive assembly connected; the driving assembly comprises a motor assembly and a hydraulic assembly which are connected; the delivery assembly includes a conduit component and a pressure component; the catheter component comprises a fixed tube and a movable tube; the fixed pipe and the movable pipe can move relatively; the pressure component comprises a hydraulic chamber and a moving part; the moving piece is movably arranged in the hydraulic chamber; the moving pipe is connected with the moving piece; the motor assembly is used for driving the hydraulic assembly to convey media to the hydraulic chamber so as to drive the moving member and the moving pipe to move relative to the fixed pipe. Further, the moving part divides the hydraulic chamber into a release cavity and a closed cavity which are axially arranged; when the hydraulic assembly delivers a medium to the release cavity, the moving member and the moving tube move in a first direction relative to the fixed tube; when the hydraulic assembly conveys media to the closed cavity, the moving part and the moving pipe move towards a second direction relative to the fixed pipe; thereby effecting relative movement of the fixed and moving tubes, the first direction being opposite the second direction.

The conveying system provided by the invention adopts electric and hydraulic pressure to drive the catheter component to move so as to realize loading and releasing of the medical implant, so that the same conveying system can bear loads with different sizes, and the same conveying system can provide pushing force with different sizes, thereby being capable of conveying different medical implants. It will be appreciated that the push force required for different medical implants may be different, such as valve stents, requiring a greater push force. Therefore, the same conveying system can be suitable for different medical implants and has good flexibility. The electric and hydraulic combined driving device is adopted to drive the guide pipe component to move, so that the overall mass and volume of an actuating element (namely a conveying part) are reduced, and the usability and the operation control precision are improved; meanwhile, the driving assembly is detachably connected with the executing element, so that the driving assembly can be reused only by replacing the executing element, and the operation cost can be effectively reduced by completing different operations.

In addition, the driving assembly and the conveying assembly are preferably separated, namely the driving assembly is not arranged on the conveying assembly, so that the volume and the mass of the conveying part are reduced, the conveying control precision of the medical implant is further improved, the problem that the operation of an operator is influenced by excessive load on the conveying part is solved, the convenience of operation is improved, and the success rate of the operation is improved. In addition, because the drive assembly is independent of the conveying assembly, the mutual interference between the drive assembly and the conveying assembly is small, so when the conveying assembly is modified, for example, when a new function is given to the conveying assembly, the limitation caused by the drive assembly is small, the difficulty of modifying the conveying assembly is reduced, the function of the conveying system is favorably expanded, and the service performance of the conveying system is improved. Further, the hydraulic chamber is preferably arranged in a handle member arranged at the proximal end of the catheter member, such that the hydraulic chamber is arranged at the proximal end of the delivery assembly, which provides for a higher safety of hydraulic delivery. Of course in other embodiments the hydraulic chamber may also be provided within the catheter component and extend along the axis of the catheter component to the distal end of the catheter component.

Medical implants to which the delivery system of the present invention is applicable may be selected based on the location of the target delivery site, for example, including but not limited to valve stents (e.g., cardiac valve stents). It will be appreciated by those skilled in the art that the delivery system disclosed herein may be used to place other medical implants (e.g., vascular stents, aneurysm stents, balloon expandable stents, ureteral stents, prostatic stents, peripheral stents, tracheobronchial stents, etc.) into corresponding locations in the body in addition to valve stents. The medical implant may also be a graft, embolic device, occlusion device, etc. The present invention is also not limited as to the manner of access of the delivery system, and access to the treatment site may be provided by a variety of techniques and methods, such as, for example, percutaneous transluminal angioplasty.

The conveying system of the invention can further comprise a control assembly which is in communication connection with the motor assembly and is used for controlling the working state of the motor assembly, wherein the working state of the motor assembly mainly comprises the rotation direction (forward rotation or reverse rotation) of the motor, and optionally, the control assembly can also control the starting and stopping of the motor assembly and the rotation speed. Preferably, the control assembly and the drive assembly are provided separately. Herein, "separately disposed" means that the two components are not physically integrated within the same container or are not closely connected. If the control assembly is not arranged on the driving assembly or the conveying assembly, the control assembly, the conveying assembly and the driving assembly are mutually independent. The advantage of doing so is, avoids increasing drive assembly's volume to reduce the space that the region occupied around the operation table, in order to avoid influencing the operation, also be convenient for in addition do sterilization treatment to control assembly alone, reduce the sterilization degree of difficulty, ensure the operation security. The control assembly is preferably a portable device, on one hand, sterilization treatment can be conveniently carried out on the control assembly, the safety of the operation is ensured, and on the other hand, the control assembly has the advantages of being small and exquisite and light, and is convenient for a doctor to operate.

The delivery system of the present invention is described in further detail below in conjunction with the figures and preferred embodiments.

Referring to fig. 1-2, an embodiment of the present invention provides a delivery system for a medical implant, which includes a delivery assembly 1 and a drive assembly 2. The delivery assembly 1 is required to comprise a catheter component and a pressure component, wherein the catheter component comprises a fixed tube and a movable tube, and the fixed tube and the movable tube can move relatively. It is to be understood that in some embodiments, the inner tube assembly of the catheter member may be configured as a moving tube while the outer tube assembly of the catheter member is configured as a stationary tube, in which case the inner tube assembly is always a moving tube and the outer tube assembly is always a stationary tube. In some embodiments, the outer tube assembly in the catheter member may be configured as a moving tube while the inner tube assembly of the catheter member is configured as a stationary tube, in which case the outer tube assembly is always a moving tube and the inner tube assembly is always a stationary tube. In other embodiments, either of the inner and outer tube assemblies can be switched between a fixed tube and a moving tube, in other words, when the outer tube assembly is a moving tube, the inner tube assembly is a fixed tube, causing the outer tube assembly to move relative to the inner tube assembly, and when the inner tube assembly is a moving tube, the outer tube assembly is a fixed tube, causing the inner tube assembly to move relative to the outer tube assembly; in this case, the number of the moving pipes is plural, and one hydraulic chamber is generally provided for each moving pipe.

The pressure component comprises a hydraulic chamber and a moving part; the moving piece is movably arranged in the hydraulic chamber and divides the hydraulic chamber into a release chamber and a closed chamber which are axially arranged; the moving pipe is connected with the moving member. When the number of the moving pipes is one, the number of the hydraulic chambers is usually one, and one moving member is arranged in one hydraulic chamber to drive one moving pipe to move; when the number of the moving pipes is multiple, the number of the hydraulic chambers is also multiple, preferably the number of the hydraulic chambers is the same as that of the moving pipes, a moving member is arranged in each hydraulic chamber, the moving member in each hydraulic chamber is used for driving the corresponding moving pipe to move, and the hydraulic assembly can selectively convey media to one of the multiple hydraulic chambers.

Wherein: the drive assembly 2 is preferably arranged separately from the conveyor assembly 1, so that the drive assembly 2 is spatially separated or separated from the conveyor assembly 1, i.e. the drive assembly 2 is not arranged on the conveyor assembly 1, so that the conveyor assembly 1 and the drive assembly 2 are not physically integrated in the same container or are not connected in a tight manner. The drive assembly 2 is used for feeding the medium to the feeding assembly 1, i.e. to the hydraulic chamber. In more detail, as shown in fig. 2, the driving assembly 2 conveys the medium to the conveying assembly 1 through the medium conveying conduit 3 (the medium conveying conduit 3 is respectively connected with the conveying assembly 1 and the driving assembly 2). Preferably, the medium delivery catheter 3 is a high pressure resistant catheter (i.e., a high pressure tube) to accommodate the purpose of the delivery system for delivering different medical implants. The number of the medium delivery conduits 3 is not limited, but may be configured according to the number of the hydraulic chambers. In addition, the driving assembly 2 adopts a hydraulic and electric scheme to convey the medium to the conveying assembly 1. Specifically, the driving assembly 2 comprises a motor assembly and a hydraulic assembly which are connected, and the motor assembly provides a driving force to drive the hydraulic assembly to convey media to the hydraulic chamber. Preferably, the driving assembly 2 further includes a control box (not labeled), and the motor assembly and the hydraulic assembly are both disposed in the same control box. The control box is used for protecting the motor assembly and the hydraulic assembly, and is favorable for arrangement around the operating table.

Preferably, the conveying system further comprises a control assembly 4, and the control assembly 4 is in wired or wireless communication with the driving assembly 2. The control component 4 is used for sending a control signal to the driving component 2, so that the motor component works according to the control signal to drive the hydraulic component to convey media to the hydraulic chamber, and thus the operations of loading and releasing the medical implant, resetting the conveying component 1 and the like are realized. In this embodiment, the control assembly 4 may be in wired communication with the driving assembly 2 via a signal control line 5. Furthermore, the control module 4 is not disposed on the conveying module 1, so that the conveying module 1 and the control module 4 are spatially separated or separated, i.e., the conveying module 1 and the control module 4 are not physically integrated in the same container or are not tightly connected. More preferably, the control assembly 4 is also not provided on the drive assembly 2, so that the control assembly 4, the drive assembly 2 and the transport assembly 1 are arranged independently of one another.

Further, the motor assembly is in communication connection with the control assembly 4 to receive a control signal of the control assembly 4. Such as the control signal comprising a release signal (first signal) and a close signal (second signal). When the control component 4 sends a release signal to the motor component, the motor component drives the hydraulic component to deliver media to a release cavity of the hydraulic chamber; on the contrary, when the control component 4 sends a closing signal to the motor component, the motor component drives the hydraulic component to convey media to the closed cavity of the hydraulic chamber.

In one embodiment, the motor assembly comprises a rotary motor and a motion conversion mechanism, wherein the rotary motor is used for converting rotary motion into linear motion, and the motion conversion mechanism is used for driving the piston in the hydraulic assembly to move. In another embodiment, the motor assembly comprises a linear motor, and the linear motion of the linear motor drives the piston in the hydraulic assembly to move.

In more detail, referring to fig. 4, the hydraulic assembly includes a hydraulic cylinder 30 and a piston 330, the piston 330 being movably disposed within the hydraulic cylinder 30, the piston 330 dividing a space within the hydraulic cylinder 30 into a release actuation chamber having a first outlet 310 and a closure actuation chamber having a second outlet 320. The relative positional relationship of the first outlet 310 and the second outlet 320 is not limited as long as two outlets are provided in the hydraulic cylinder block 30, one of which communicates with the release driving chamber on one side of the piston 330 and the other communicates with the close driving chamber on the other side of the piston 330.

In an exemplary embodiment, with continued reference to fig. 4, the driving assembly 2 includes a rotating electrical machine 26, a transmission mechanism 27, a linear module 28, a connecting block 29 and a hydraulic assembly, which are connected in sequence, the transmission mechanism 27 may include a coupler and/or a reducer, and the linear module 28 is a motion conversion mechanism. Optionally, the linear module is a lead screw or a synchronous belt. The connecting block 29 is used for connecting the output end of the linear module 28 and the piston rod in the hydraulic assembly. Therefore, the rotary motion of the rotary motor 26 is transmitted to the linear module 28 through the transmission mechanism 27, and the linear module 28 converts the rotary motion into a linear motion, so as to drive the piston 330 in the hydraulic assembly to move. It will be appreciated that when the motor is a linear motor, the movable plane of the linear motor is connected to the piston rod in the hydraulic assembly by means of the connecting block 29. Further, the driving assembly 2 may further include a speed reducer, so as to adjust the output power of the motor through the speed reducer.

Furthermore, both outlets on the hydraulic cylinder 30 are connected to the media delivery conduit 3, optionally a pair of conduit connections 21 is provided on the control box, each outlet on the hydraulic cylinder 30 being connected to a corresponding conduit connection 21 on the control box. The medium in the release driving chamber sequentially enters the release cavity of the hydraulic chamber through the first outlet 310, one of the catheter interfaces 21 and one of the medium conveying catheters 3 to realize the release of the far end of the conveying assembly; conversely, the medium in the closed driving chamber sequentially passes through the second outlet 320, the other catheter interface 21 and the other medium conveying catheter 3 to enter the closed cavity of the hydraulic chamber, so that the distal end of the conveying assembly is closed.

As shown in fig. 1, at least one pair of

conduit connectors

101 and 102 may be disposed on the delivery assembly 1, the release chamber and the closed chamber of the hydraulic chamber are respectively connected to a corresponding one of the conduit connectors, and one end of the medium delivery conduit 3 is connected to the conduit connector and the other end is connected to the conduit interface 21. The number of the conduit interfaces 21 corresponds to the number of the medium conveying conduits 3. For example, when only one hydraulic chamber is disposed on the conveying assembly 1, the hydraulic chamber corresponds to two chambers, namely a release chamber and a closed chamber, each chamber is connected to the hydraulic assembly through a conduit connector and a medium conveying conduit 3, at this time, the driving assembly 2 provides two conduit interfaces 21, and each conduit interface 21 is connected to a corresponding medium conveying conduit 3. In other embodiments, when there are a plurality of hydraulic chambers, for example, two hydraulic chambers, a pair of conduit connectors needs to be provided for each hydraulic chamber, but only two conduit connectors need to be provided.

With continued reference to fig. 2-5, the control unit 4 is preferably a portable device, i.e., a remote control that can be hand-held. Further, a control button 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 assembly. The control button 402 is used to generate a control signal, and the motor assembly drives the hydraulic assembly to selectively deliver media to one of the release chamber and the closed chamber of the hydraulic chamber according to the control signal. Further, the control button 402 has a first position and a second position; when the control button 402 is toggled to a first position, such as to the left, the portable device sends a release signal; when the control button 402 is toggled to a second position, e.g. to the right, the portable device sends a close signal via the communication interface 401. The release signal or the close signal is then sent to the drive assembly 2 via the communication interface 401. Preferably, the control button 402 is provided with indication marks, such as left and right arrows, to indicate the direction of dialing. More preferably, the control button 402 is provided with a bump 403 to indicate the position of the toggle by tactile perception of the operator, for example, the bump 403 is provided on one side of the control button 402, which is away from the middle, and the other side is not provided, so that when the operator's hand perceives the presence of the bump 403, i.e. knows the position of the toggle, a release signal or a close signal can be sent, and when the operator's hand does not perceive the bump 403, i.e. knows the position of the toggle, another control signal can be sent.

In an embodiment, the driving assembly 2 preferably further comprises an emergency stop device 22 for cutting off the power supply of the motor assembly in case of emergency, and further, the emergency stop device 22 is disposed on the control box. The scram device 22 includes a scram button. Further, the driving assembly 2 further comprises a human-computer interface 23 disposed on the control box. Some information, which may include at least one of the moving speed, the moving stroke, the pressure of the medium, etc. of the moving tube and the kind of the medical implant, may be input through the human machine interface 23 so that the driving assembly 2 operates according to the input information. In the illustrated embodiment, the drive assembly 2 is in wired communication with the control assembly 4, and in this case, a signal input port 24 may be provided on the control box, and one end of the signal control line 5 may be detachably connected to the signal input port 24, and the other end of the signal control line 5 may be connected to a corresponding port on the control assembly 4. In other embodiments, the driving assembly 2 is in wireless communication with the control assembly 4, and the signal input port 24 can be used as a signal receiving port for wireless communication. Further, the drive assembly 2 further comprises a control box bracket 25, and the control box is mounted on the control box bracket 25 so as to facilitate the arrangement of the drive assembly 2 near the operating table through the control box bracket 25. The control box support 25 is preferably provided with wheels to facilitate movement over the ground to adjust position.

The preferred working mode of the conveying system provided by the embodiment is as follows: before an operation, information such as the type of a medical implant, the moving speed of a moving pipe, medium pressure and the like is set on a human-computer interaction interface 23, then a control button 402 is pushed to transmit a control signal to a driving assembly 2, a rotating motor 26 in the driving assembly 2 carries out forward or reverse rotating motion after receiving the control signal, the rotating pair is transmitted to a linear module 28 through a transmission mechanism 27, the linear module 28 converts the rotating pair into linear motion, and then a piston 330 is driven by a connecting block 29 to do linear motion in the axial direction in a hydraulic cylinder 30. Further, when the control button 402 is moved to the left to the first position, a release signal is sent to the motor assembly, so that the rotating motor 26 rotates forward to drive the piston 330 to move to the left (third direction) in fig. 4, and at this time, the medium in the release driving chamber in the hydraulic cylinder 30 is compressed and pushed, passes through the first outlet 310, flows through one of the conduit interfaces 21, and enters the release chamber of the delivery assembly 1 through the medium delivery conduit 3 and one of the conduit connectors 101; when the medium pressure in the release cavity exceeds the static friction in the axial direction between the moving member and the fixed tube, the moving member pushes the moving tube to move towards a first direction relative to the fixed tube (the first direction can be the proximal direction or the distal direction of the fixed tube). Conversely, when the control button 402 is shifted to the second position to the right, a close signal is sent to the motor assembly, so that the rotating motor 26 performs a reverse rotating motion to drive the piston 330 to move in the right direction (fourth direction) in fig. 4, at this time, the medium in the closed driving chamber is compressed and pushed, passes through the second outlet 320, flows through the other conduit interface 21, enters the closed cavity through the other medium conveying conduit 3 and the other conduit joint 102, and when the medium pressure in the closed cavity exceeds the static friction in the axial direction between the moving member and the fixed pipe, the moving member pushes the moving pipe to move in the second direction relative to the fixed pipe; the second direction is opposite to the first direction.

It should be understood that the hydraulic cylinder 30 may have a medium stored therein in advance, for example, the medium delivery conduit 3 may draw the medium into the hydraulic cylinder 30 for storage through the medium delivery conduit 3 before being connected to the delivery assembly 1, or the medium may be stored in the hydraulic cylinder 30 in another suitable manner. In addition, the conduit interface 21 on the control box connected with the medium conveying conduit 3 is preferably a quick-release interface, so that the medium conveying conduit 3 can be conveniently and quickly disassembled. In addition, the number of the control buttons 402 may be one or more, if one, a plurality of positions may be set, and if a plurality of, the corresponding positions may be controlled by different control buttons 402. In addition, the drive assembly 2 may further comprise a pressure sensor for detecting the pressure of the medium leading to the release chamber or the closed chamber, such as the pressure of the medium in the hydraulic cylinder 30 or in the line, and the monitored pressure information may be displayed on the human-machine interface 23. Further, the driving assembly 2 can adjust the currently delivered pressure according to the monitored pressure, so as to ensure the precision of the operation. It is also understood that the medium is primarily a non-compressible and fluid medium such as pure water, saline, oil, etc., preferably saline. In addition, it should be noted that the structure of the motor assembly includes, but is not limited to, the above-listed implementation, and those skilled in the art should understand that other structures can be adopted to drive the piston to perform the reciprocating linear motion.

After the delivery system provided by the embodiment is applied, the overall mass and volume of the actuating element (namely, the delivery part, namely, the catheter part) can be reduced, the usability and the control precision of the delivery system are improved, meanwhile, the same set of driving part can be repeatedly utilized to complete different operations, and only the actuating element needs to be replaced, so that the cost can be effectively reduced. In addition, according to the different load condition of conveying system, as long as choose suitable output's motor for use, the compressive strength of adjustment hydraulic cylinder body simultaneously can realize the stable efficient release of conveying system and closed operation, convenient to use.

The following further describes a preferred embodiment of the conveyor assembly 1 in conjunction with several preferred embodiments, it is to be understood that the present invention is not limited to any particular configuration of the conveyor assembly 1, including but not limited to the implementations exemplified by the following preferred embodiments.

Example one

Referring to fig. 6a to 6b, the first embodiment provides a first delivery assembly 100, which includes a catheter component and a pressure component, wherein the catheter component includes an outer tube assembly and an inner tube assembly, the outer tube assembly is configured to fix a tube, and the inner tube assembly is configured to move the tube. The outer pipe assembly is sleeved outside the inner pipe assembly, and the outer pipe assembly and the inner pipe assembly can move relatively.

The outer tube assembly comprises a fixed head 122, a connecting tube 123 and an outer tube 124 which are axially connected in sequence from the far end to the near end; the fixing head 122 is used for fixing the medical implant; the inner tube assembly comprises a conical head 111, a sheath tube 112 and an inner tube 115 which are axially distributed from a distal end to a proximal end, namely, the proximal end of the conical head 111 is fixedly connected with the distal end of the sheath tube 112 and the distal end of the inner tube 115 respectively, and the conical head 111 is preferably an atraumatic head, such as a non-invasive structure with a conical shape, a partial spherical shape, a circular shape and the like, so as to prevent, inhibit or substantially prevent damage to target tissues. The proximal end of the sheath 112 may be closed with the distal end of the outer tube 124 for covering part or all of the medical implant.

The pressure member comprises a hydraulic chamber, which is one and is arranged within the conduit member, more particularly between the outer tube 124 and the inner tube 115, and a displacement member 114. The mover 114 is movably disposed within the hydraulic chamber. The displacement element 114 divides the hydraulic chamber into an axially aligned closed chamber 116 and a release chamber 117, which are sealed from each other and are each used for the transport of a medium. Wherein the displacement member 114 is fixedly connected to the inner tube 115 for moving the inner tube assembly in an axial direction relative to the outer tube assembly. Further, a guidewire lumen 113 is provided within the inner tube 115, the guidewire lumen 113 being configured to provide access to a guidewire. Further, the distal end of the hydraulic chamber is preferably provided with a distal sealing ring 121, the distal sealing ring 121 is disposed on the fixed head 122, the proximal end of the hydraulic chamber is preferably provided with a proximal sealing ring 127, and more preferably, the moving member 114 is also provided with a sealing ring (not labeled).

The first delivery assembly 100 also includes a handle member disposed at the proximal end of the catheter member. The handle part is fixedly connected with the outer tube assembly. The handle member generally includes an outer housing 118, the outer housing 118 being disposed over the proximal end of an inner tube assembly that extends through the outer housing 118. Further, the handle member includes a pair of catheter connectors fixedly disposed on the housing 118. The pair of catheter connectors includes a closure catheter connector 125 and a release catheter connector 126; the occlusion catheter adapter 125 is used for connecting with the occlusion cavity 116 and with one of the medium delivery catheters 3; the release catheter hub 126 is adapted to be connected to the release lumen 117 and to another media delivery catheter 3.

In actual use, the motor assembly drives the hydraulic assembly to deliver a medium to the closed cavity 116 of the hydraulic chamber, and drives the moving member 114 and the inner tube 115 to move towards the proximal end (first direction) of the outer tube 124 through the pressure of the medium until the sheath tube 112 covers the fixing head 122 and the connecting tube 123, so as to obtain a closed state shown in fig. 6a, at this time, the distal end of the catheter component is closed, thereby completing the loading of the medical implant or the resetting of the delivery assembly; conversely, when the motor assembly drives the hydraulic assembly to deliver the medium to the release cavity 117 of the hydraulic chamber, the moving member 114 and the inner tube 115 are driven to move towards the distal end of the outer tube 124 (the second direction), so that the sheath 112 is far away from the fixed head 122, and finally the release state shown in fig. 6b is obtained, at this time, the release of the medical implant can be realized. Preferably, when the control assembly 4 sends a closing signal to the motor assembly, the hydraulic assembly delivers a medium to the closed cavity 116 of the hydraulic chamber; conversely, when the control unit 4 sends a release signal to the motor unit, the hydraulic unit delivers the medium to the release chamber 117 of the hydraulic chamber.

Example two

Referring to fig. 7 a-7 b, a second delivery assembly 200 is provided in the second embodiment, which includes a catheter member and a pressure member, the catheter member includes an outer tube assembly configured to move a tube and an inner tube assembly configured to fix the tube. The outer pipe assembly is sleeved outside the inner pipe assembly, and the outer pipe assembly and the inner pipe assembly can move relatively.

The outer tube assembly comprises a sheath tube 221 and a conveying outer tube 222 which are axially connected in sequence from the far end to the near end; the inner tube assembly comprises a conical head 211, a distal inner tube 212, a fixed head 213 and a proximal inner tube 215 which are axially connected in sequence from the distal end to the proximal end, namely, the proximal end of the conical head 211 is fixedly connected with the distal end of the distal inner tube 212, the proximal end of the distal inner tube 212 is fixedly connected with 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 221 may 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, in the second embodiment, only the portions different from the first embodiment are described, and the portions identical to the first embodiment are not described in detail, and the portions identical to the first embodiment may refer to the first embodiment.

The pressure member of the present embodiment comprises a hydraulic chamber and a displacement member 225, the hydraulic chamber being one and disposed within the catheter member, 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 disposed within the hydraulic chamber. The moving member 225 divides the hydraulic chamber into an axially aligned release chamber 218 and a closed chamber 219, which are sealed from each other. Wherein the moving member 225 is connected to the outer delivery tube 222 to move the outer tube assembly in an axial direction relative to the inner tube assembly. Further, a guidewire lumen 217 is preferably provided within the inner tubing assembly. Further, the distal end of the hydraulic chamber is preferably provided with a distal seal 214, the distal seal 214 being typically provided on the stationary head 213, the proximal end of the hydraulic chamber is preferably provided with a proximal seal 216, and more preferably the displacement member 225 is also provided with a seal.

The second delivery assembly 200 also includes a handle member disposed at the proximal end of the catheter member. The handle member is movably connected to the outer tube assembly, i.e., the proximal end of the outer tube assembly is reciprocally movable within the handle member. The handle member generally comprises a housing 226, the housing 226 having a cavity 227, the proximal end of the outer tube assembly movably disposed within the cavity 227. Further, the handle member includes a pair of conduit connectors movably disposed on the housing 226. The pair of conduit fittings are adapted to move with the outer tube assembly. The pair of catheter connectors includes a release catheter connector 223 and a closure catheter connector 224; a release catheter adapter 223 is connected to the release lumen 218 and is adapted to be connected to one of the media delivery catheters 3; the closed catheter hub 224 is connected to the closed lumen 219 and to another media delivery catheter 3.

In actual use, the motor assembly drives the hydraulic assembly to deliver a medium to the release cavity 218 of the hydraulic chamber, and the pressure of the medium drives the moving member 225 and the delivery outer tube 222 to move towards the proximal end (first direction) of the inner tube assembly, so that the sheath 221 is away from the conical head 211, and a release state shown in fig. 7b is obtained, at this time, release of the medical implant can be achieved; conversely, when the motor assembly drives the hydraulic assembly to deliver the medium to the closed cavity 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 conical head 211, and finally the closed state shown in fig. 7a is obtained, at this time, the distal end of the catheter component is closed, and the loading of the medical implant or the resetting of the delivery assembly can be completed.

It will be appreciated that in the first embodiment, movement of the inner tube assembly towards the proximal end of the outer tube assembly effects closure of the distal end of the catheter component, and movement of the inner tube assembly towards the distal end of the outer tube assembly effects release of the distal end of the catheter component. Example two is in direct contrast to example one, in example two, the outer tube assembly is moved towards the proximal end of the inner tube assembly to effect release of the distal end of the catheter component, and the outer tube assembly is moved towards the distal end of the inner tube assembly to effect closure of the distal end of the catheter component. Generally, the release pattern of the second embodiment is a forward release, and the release pattern of the first embodiment is a reverse release.

EXAMPLE III

Referring to fig. 8a to 8b, a third delivery assembly 300 is provided in this embodiment, which includes a conduit part and a pressure part, wherein the conduit part 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 are movable relative to the intermediate tube assembly 32, in addition, the outer tube assembly 33 may be a movable tube or a fixed tube, and the inner tube assembly 31 may be a movable tube or a fixed tube. Therefore, in the present embodiment, the number of the moving pipes is two.

Wherein: the outer tube assembly 33 comprises a proximal sheath tube 331 and a delivery segment outer tube 333; the intermediate pipe assembly 32 includes a fixed head 322, a connection pipe 323, and an intermediate pipe 324; inner tube assembly 31 includes a conical head 311, a distal sheath 312, and an inner tube 313. The proximal end of the proximal sheath tube 331 is fixedly connected with the distal end of the delivery section outer tube 333, and the two can be integrally or separately molded. 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 with the conical head 311, and the distal end of the distal sheath 312 is fixedly connected with the proximal end of the conical head 311; intermediate tube 324 is disposed within outer tube 333 of the delivery segment, intermediate tube 324 is disposed between outer tube 333 and inner tube 313 of the delivery segment, intermediate tube assembly 32 is stationary, and both outer tube assembly 33 and inner tube assembly 31 are movable relative to intermediate tube 324. When the outer tube assembly 33 is movable relative to the intermediate tube assembly 32, the inner tube assembly 31 may be fixed relative to the intermediate tube assembly 32; the outer tube assembly 33 may be fixed relative to the intermediate tube assembly 32 while the inner tube assembly 31 is movable relative to the intermediate tube assembly 32. The proximal sheath 331 may form a closure with the distal sheath 312 to install the medical implant. It should be noted that, in the following description, only the portions different from the first embodiment or the second embodiment are referred to, and the portions identical to the first embodiment or the second embodiment are not described in detail.

The pressure means of this embodiment comprises two hydraulic chambers, a first and a second hydraulic chamber, respectively, both arranged within the conduit means, the first hydraulic chamber being arranged between the delivery section outer tube 333 and the intermediate tube 324 and extending to the distal end, the second hydraulic chamber being arranged between the connecting tube 323 and the inner tube 313 and between the intermediate tube 324 and the inner tube 313. A moving piece is arranged in each of the two hydraulic chambers; a first moving part 325 is arranged in the first hydraulic chamber, and the first moving part 325 is connected with the conveying section outer pipe 333 to drive the conveying section outer pipe 333 to axially move; a second moving member 314 is disposed in the second hydraulic chamber, and the second moving member 314 is connected to the inner tube 313 to drive the inner tube 313 to move axially. Wherein the first hydraulic chamber is divided into a release chamber and a closure chamber (not labeled) by the first moving member 325, preferably the distal end of the first hydraulic chamber is provided with a first distal sealing ring 332 (fixed on the outer tube assembly 33), the proximal end of the first hydraulic chamber is provided with a first proximal sealing ring 336 (fixed on the outer tube assembly 33), more preferably the first moving member 325 is provided with a sealing ring (not labeled). The second hydraulic chamber is divided by the second moving member 314 to form a release chamber and a closed chamber (not labeled); preferably, the distal end of the second hydraulic chamber is provided with a second distal sealing ring 321, the second distal sealing ring 321 may be arranged on the fixed head 322, the proximal end of the second hydraulic chamber is provided with a second proximal sealing ring 326, and more preferably, the second moving member 314 is provided with a sealing ring (not labeled).

The third delivery assembly 300 also includes a handle member 34 disposed at the proximal end of the catheter member. The handle member 34 generally includes a housing 342 having a cavity through which the inner tube assembly 31 and the outer tube assembly 33 pass. Further, the handle member 34 includes two pairs of conduit connectors, one pair of conduit connectors being movably disposed on the housing 342 and the other pair of conduit connectors being fixedly disposed on the housing 342. In this embodiment, one of the pairs of conduit fittings comprises a first release conduit fitting 334 and a first closure conduit fitting 335, and the other pair of conduit fittings comprises a second closure conduit fitting 327 and a second release conduit fitting 328; a first release conduit connection 334 and a first closure conduit connection 335 communicate with the release chamber and the closure chamber, respectively, in the first hydraulic chamber and are movable on the housing 342; a second closure conduit connector 327 and a second release conduit connector 328 communicate with the closure and release chambers, respectively, in the second hydraulic chamber and are fixed to the housing 342. Preferably, the housing 342 is provided with a guide slot 341 to guide the movement of the first release conduit connector 334 and the first closure conduit connector 335, so as to improve the precision of the movement. These conduit connections are all connected to the medium delivery conduit 3.

In practical use, the delivery assembly of the present embodiment, due to the two hydraulic chambers, can achieve bidirectional release, that is, the inner tube assembly can be driven to move relative to the middle tube assembly to achieve the closing and releasing of the distal end of the delivery assembly, and the outer tube assembly can be driven to move relative to the middle tube assembly to achieve the closing and releasing of the distal end of the delivery assembly. The specific operation mode can refer to the first embodiment and the second embodiment, and is not described in detail here.

Further, in order to realize the switching of different hydraulic chambers, the driving assembly 2 further includes a reversing control module for performing the switching of different hydraulic chambers. The reversing control module is respectively connected with a hydraulic assembly and a conveying assembly and is used for enabling the hydraulic assembly to be selectively connected with one of the hydraulic chambers so as to enable the hydraulic assembly to selectively convey media to one of the hydraulic chambers. Preferably, when the hydraulic chamber is a plurality of chambers, the plurality of chambers includes, but is not limited to, two chambers, and there may be more chambers, and only one motor assembly and one hydraulic assembly are provided for the plurality of chambers.

Preferably, the reversing control module comprises an electromagnetic reversing valve 6, and switching of different channel groups is performed through the electromagnetic reversing valve 6, so that switching between different hydraulic chambers is realized. The electromagnetic directional valve 6 comprises a plurality of valve groups and two connecting ports; the two connecting ports are connected with the hydraulic assembly, and are particularly connected with a first outlet and a second outlet; a plurality of valve groups are connected with the conveying assembly, and each valve group comprises two valves; each valve group is used for controlling the connection of a corresponding hydraulic chamber and the hydraulic component; when two connecting ports are communicated with one of the valve groups, the corresponding hydraulic chamber is connected with the hydraulic component. In addition, a plurality of pairs of conduit connectors are arranged on the handle part, each pair of conduit connectors is connected with the release cavity and the closed cavity of the corresponding hydraulic chamber, and a plurality of valve groups are connected with the plurality of pairs of conduit connectors through medium conveying conduits.

It should be understood that the reversing control module of the present invention includes, but is not limited to, the electromagnetic reversing valve 6, and other switching manners are also possible, which are not limited thereto.

Referring to fig. 9a to 9b, in an embodiment, the electromagnetic directional valve 6 includes a housing 61, the housing 61 is provided with a first directional valve 62, a second directional valve 63, a third directional valve 64, and a fourth directional valve 65, and the housing 61 is further provided with a first connection port 66 and a second connection port 67; the first connecting port 66 and the second connecting port 67 are respectively used for connecting a pair of conduit ports 21 on the control box; the four reversing valves are respectively connected with the four pipe joints one by one through the medium conveying pipes 3. And furthermore, the electromagnetic directional valve 6 is utilized to realize that the first hydraulic chamber and the second hydraulic chamber can be respectively communicated only by arranging a pair of conduit interfaces on the control box, so that the structure is further simplified, and the control is also convenient. When the hydraulic chambers need to be switched, the push rod 68 is driven only by the electronic control module, and the reversing valve is adjusted to the corresponding channel, wherein the push rod 68 is provided with a sealing ring 69. In this embodiment, from left to right, a first direction valve 62, a third direction valve 64, a fourth direction valve 65 and a second direction valve 63 are sequentially arranged; when the first connection port 66 is communicated with the first direction valve 62 and the second connection port 67 is communicated with the second direction valve 63, the first hydraulic chamber is in an operating state, that is, as shown in fig. 9 a; when the first connection port 66 communicates with the third direction switching valve 64 and the second connection port 67 communicates with the fourth direction switching valve 66, the second hydraulic chamber is put into an operating state, which is shown in fig. 9 b.

Example four

Referring to fig. 10 a-10 b, the fourth embodiment provides a fourth delivery assembly 400, which includes a catheter member and a pressure member 43, wherein the catheter member includes an inner tube assembly 41 and an outer tube assembly 42. The outer tube assembly 42 is configured to move a tube and the inner tube assembly 41 is configured to hold a tube, or the outer tube assembly 42 is configured to hold a tube and the inner tube assembly 41 is configured to move a 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 relatively.

The inner tube assembly 41 comprises a conical head 411, a distal inner tube 412, a fixing head 413 and a proximal inner tube 414, wherein the proximal end of the conical head 411 is fixedly connected with the distal end of the distal inner tube 412, the proximal end of the distal inner tube 412 is fixedly connected with the fixing head 413, and the proximal end of the fixing head 413 is fixedly connected with the proximal inner tube 414; the outer tube assembly 42 comprises a sheath tube 421 and a delivery outer tube 422 which are sequentially connected from the far end to the near end in the axial direction, the sheath tube 421 can be matched with the conical head 411 to form a closed state for loading the medical implant, and the sheath tube 421 and the delivery outer tube 422 can be integrally or separately molded.

The pressure member 43 is disposed at the proximal end of the delivery assembly and includes a hydraulic chamber 433 and a displacement 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 chambers 433 being side-by-side and disposed within the housing of the handle member 44, the hydraulic chambers 433 not extending 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 a release chamber and a closed chamber which are axially arranged and sealed from each other. And the moving member 423 is fixedly connected to the conveying outer tube 422 to move the outer tube assembly 42 in the axial direction relative to the inner tube assembly 41. In other embodiments, the moving member 423 is fixedly connected to the proximal inner tube to move the inner tube assembly 41 axially relative to the outer tube assembly 42. Preferably, the distal end of the hydraulic chamber 433 is preferably provided with a distal sealing ring 431, the proximal end of the hydraulic chamber 433 is preferably provided with a proximal sealing ring 432, and more preferably the moving member 423 is also provided with a sealing ring.

Similarly, a pair of conduit connectors, respectively a release conduit connector 434 and a closure conduit connector 435, are fixedly disposed on the handle member 44, the release conduit connector 434 being connected to the release chamber of the hydraulic chamber 433, and the closure conduit connector 435 being connected to the closure chamber of the hydraulic chamber 433.

Further, considering that the housing of the handle part 44 is usually made of polymer material, and the pressure endured is easily limited, in order to overcome this problem, the pressure part 43 is designed to further include another housing (not labeled) disposed inside the housing of the handle part 44, the hydraulic chamber is disposed inside the other housing, and the material of the other housing is a biocompatible metal material, so that the hydraulic chamber 433 can endure a larger pressure, and further improve the delivery capability of the delivery system to adapt to the delivery of different implants.

The difference with the above embodiment is that the hydraulic chamber of this embodiment is arranged in the handle member such that the hydraulic chamber is located at the proximal end of the delivery assembly, which avoids the need for a hydraulic chamber in the catheter portion of the delivery assembly, which avoids safety problems due to leakage of the media lumen when the distal end of the catheter is delivered to the patient, and provides a better safety of the device. The operation of the delivery assembly of this embodiment is similar to that of the previous embodiment and will not be described in detail. Wherein fig. 10b shows the delivery assembly in a released state and fig. 10a shows the delivery assembly in a closed state.

In addition, it should also be understood that one or more hydraulic chambers 433 in this embodiment may be provided, and a plurality of hydraulic chambers includes, but is not limited to, two hydraulic chambers, and the moving member in each hydraulic chamber drives a corresponding one of the moving pipes to move, for example, the moving pipes may be an inner pipe assembly and an outer pipe assembly, and the two hydraulic chambers respectively drive the inner pipe assembly and the outer pipe assembly to move.

EXAMPLE five

In any of the above embodiments, a hydraulic chamber (not labeled) for controlling bending may be further provided in the handle member, and the hydraulic chamber for controlling bending is also divided into a release chamber and a closed chamber by the moving member thereof. Herein, to distinguish from the hydraulic chamber that drives the moving tube, the hydraulic chamber for controlling bending is defined as a bending control chamber.

Referring to fig. 11a in conjunction with fig. 1, the delivery assembly 1 further comprises a bending control member for controlling the bending of the distal end of the delivery assembly 1. The bending control component comprises a bending control mechanism and a bending control chamber, the bending control mechanism is used for controlling the bending of the conduit component, and the bending control chamber adjusts the bending state of the conduit component by hydraulically driving the bending control mechanism to move. Specifically, the motor assembly is used for driving the hydraulic assembly to convey media to the bending control chamber. It should be understood that the hydraulic chamber for driving the moving pipe and the hydraulic chamber for driving the bending control mechanism can share one set of motor assembly and hydraulic assembly, so that the structure of the conveying system is further simplified, and the operation is simplified. In addition, compared with the bending of the electric or manual control catheter component, the operation is simpler and more convenient, the operation time is further reduced, the size of the handle can be reduced, the handle can be conveniently adapted to a larger stress working condition, and the adaptability is stronger.

Further, the bending control mechanism comprises a silk thread 51, a silk thread fixing piece 52 and a silk thread 55, wherein the far end of the silk thread 51 is fixed with the far end of the catheter component, for example, the far end of the catheter component is fixed with an inner tube component or an outer tube component, the near end of the silk thread 51 is connected with the far end of the silk thread fixing piece 52, the near end of the silk thread fixing piece 52 is fixedly connected with the silk thread 55, the silk thread 55 penetrates through a bending control chamber (not labeled), the silk thread 51 is driven to move back and forth by the back and forth movement of the silk thread 55 in the axial direction, bending control is further realized, the bending control chamber controls the tightness of the silk thread 51, further the control of the conveying component 1 is realized, and the bending control of the far end of the conveying component is realized. Referring to fig. 11b, the distal end of the catheter component of the delivery assembly is bent by pulling the wire 51, so that the structure is simpler and the control is more convenient compared with other bending control methods.

Similarly, a pair of catheter connectors, such as connectors 53 and 54, are provided on the housing of the handle member for connection to the release and closure lumens, respectively, of the bend-controlling lumen. Preferably, the distal and proximal ends of the bending-control chamber are provided with sealing rings, and more preferably, the moving member in the bending-control chamber is also provided with sealing rings.

In conclusion, the conveying system provided by the invention can be suitable for various medical implants, especially when a plurality of hydraulic chambers are arranged in the conveying assembly, the switching between the hydraulic chambers is realized through the reversing control module, the control of all the hydraulic chambers is realized by only one driving assembly, the structure of the driving part is simplified, and the conveying system is more suitable for popularization and application. And aiming at the conveying system of a plurality of hydraulic chambers, the conversion of different channel groups is further realized by using the electromagnetic directional valve, the switching between different hydraulic chambers is realized, the structure is more simplified, the regulation and the control are more facilitated, and the operation is more convenient. Generally, the conveying system provided by the invention has the advantages of stable structure, high transmission efficiency and strong usability, can be adapted to conveying systems with various specifications, and realizes the purpose of reducing the cost of a single operation by replacing different executing elements.

It should be understood that the preferred embodiments of the present invention are described above, but not limited to the scope disclosed in the above preferred embodiments, for example, the present invention is not limited to the embodiment in which the motor drives the piston to move, as long as the reciprocating movement of the piston can be finally realized by the power output by the motor.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the present invention.

Claims

1. A medical implant delivery system comprising a delivery assembly and a drive assembly coupled together; the driving assembly comprises a motor assembly and a hydraulic assembly which are connected;

the delivery assembly includes a conduit component and a pressure component; the catheter component comprises a fixed tube and a movable tube; the fixed pipe and the moving pipe can move relatively;

2. The medical implant delivery system of claim 1, wherein the moving member divides the hydraulic chamber into axially aligned release and closed chambers;

3. A medical implant delivery system according to claim 1 or 2, wherein the catheter member comprises an outer tube assembly and an inner tube assembly, the outer tube assembly being disposed externally of the inner tube assembly and being relatively movable;

4. The medical implant delivery system according to claim 3, wherein when one of the outer tube assembly and the inner tube assembly is configured to hold a tube and the other is configured to move a tube, the number of hydraulic chambers is one, one of the moving members is disposed in one of the hydraulic chambers, and one of the moving members is used to drive the outer tube assembly or the inner tube assembly to move;

5. The medical implant delivery system according to claim 4, wherein when the number of hydraulic chambers is one and the inner tube assembly is a mobile tube:

the inner tube assembly comprises a conical head, a sheath tube and an inner tube; the conical head is respectively and fixedly connected with the sheath tube and the inner tube; the outer tube assembly comprises a fixing head, a connecting tube and an outer tube which are sequentially connected from the far end to the near end in the axial direction; the moving piece is fixedly connected with the inner pipe; the inner pipe can movably penetrate through the fixing head, the connecting pipe and the outer pipe in sequence; alternatively, the first and second electrodes may be,

when the number of hydraulic chambers is one and the outer tube assembly is configured to move a tube:

6. The medical implant delivery system of claim 3, wherein the delivery assembly further comprises a handle member disposed at a proximal end of the catheter member;

when the outer pipe assembly is a moving pipe, the hydraulic chamber comprises a first hydraulic chamber which is used for receiving a medium to drive the outer pipe assembly to move, the first hydraulic chamber is connected with a pair of pipe connectors, the pair of pipe connectors are movably arranged on the handle component, a guide groove is formed in the handle component, and the pair of pipe connectors are used for moving in the guide groove.

7. The medical implant delivery system of claim 1 or 2, wherein the drive assembly further comprises a control box, the motor assembly and the hydraulic assembly both being disposed within the control box; the control box is provided with a pair of conduit interfaces, and the conduit interfaces are connected with the hydraulic assembly; the pair of conduit interfaces is also connected with the hydraulic chamber through a medium conveying conduit;

8. A medical implant delivery system according to claim 1 or 2, wherein the number of moving tubes is one or more;

9. The medical implant delivery system of claim 1 or 2, wherein the number of hydraulic chambers is plural, and the number of motor assemblies and the number of hydraulic assemblies are both one;

10. The medical implant delivery system of claim 9, wherein the reversing control module comprises a solenoid reversing valve; the electromagnetic directional valve comprises a plurality of valve groups and two connecting ports; the two connecting ports are connected with the hydraulic assembly; a plurality of valve groups are connected with the conveying assembly, and each valve group comprises two valves; each valve group is used for controlling the connection of a corresponding hydraulic chamber and the hydraulic component; when the two connecting ports are communicated with one of the valve groups, the corresponding hydraulic chamber is connected with the hydraulic component.

11. The medical implant delivery system of claim 9, wherein the number of hydraulic chambers is two, a first hydraulic chamber and a second hydraulic chamber;

the outer tube assembly comprises a proximal sheath tube and a delivery section outer tube; the far end of the conveying section outer tube is fixedly connected with the near end of the near-end sheath tube;

the inner tube assembly comprises a conical head, a far-end sheath tube and an inner tube, the far end of the inner tube is connected with the conical head, and the far end of the far-end sheath tube is fixedly connected with the near end of the conical head;

a second moving part is arranged in the second hydraulic chamber and connected with the inner pipe so as to drive the inner pipe to move; and a first moving member is arranged in the first hydraulic chamber and is connected with the conveying section outer pipe so as to drive the conveying section outer pipe to move.

12. A medical implant delivery system according to claim 1 or 2, wherein the hydraulic chamber is provided with sealing rings at the proximal and distal ends, respectively, and the moving member is provided with a sealing ring.

13. The medical implant delivery system of claims 1 and 2, wherein the delivery assembly further comprises a bend-controlling member comprising a bend-controlling chamber and a bend-controlling mechanism, the bend-controlling mechanism being configured to control bending of the catheter member, the bend-controlling chamber being configured to adjust the bending state of the catheter member by hydraulically driving the bend-controlling mechanism.

14. The medical implant delivery system of claim 1 or 2, further comprising a control assembly communicatively coupled to the motor assembly; the motor assembly is used for driving the hydraulic assembly to convey media to the hydraulic chamber under the control of the control assembly; the control assembly is separately arranged from the conveying assembly and the driving assembly.

15. The medical implant delivery system of claim 14, wherein 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 for generating a control signal; the motor assembly is used for driving the hydraulic assembly to selectively convey media to one of the release cavity and the closed cavity of the hydraulic chamber according to the control signal.

16. A medical implant delivery system according to claim 1 or 2, wherein the drive assembly is arranged separately from the delivery assembly.

17. A medical implant delivery system according to claim 1 or 2, wherein the hydraulic chamber is provided within the catheter component and extends along the axis of the catheter component to the distal end, or wherein the hydraulic chamber is provided within a handle component provided at the proximal end of the catheter component.