ES2956229A2 - Medical implant delivery system - Google Patents

Abstract

A medical implant delivery system, comprising a delivery assembly (1) and a driving assembly (2), which are connected to each other. The driving assembly (2) comprises an electric motor assembly and a hydraulic assembly, and the delivery assembly (1) comprises a catheter component and a pressure component; the catheter component comprises a fixed tube and a movable tube; the pressure component comprises a hydraulic chamber and a movable member (314, 325); the movable member (314, 325) is movably arranged in the hydraulic chamber; the movable tube is connected to the movable member (314, 325); and the electric motor assembly is configured to drive the hydraulic assembly to deliver a medium to the hydraulic chamber, so as to drive the movable member (314, 325) and the movable tube to move relative to the fixed tube. Delivery operation steps can be simplified, such that stable and efficient operation of the delivery system is achieved, the duration of a surgery is shortened, and the success rate of the surgery is improved.

Description

DESCRIPTION

Medical implant placement system

TECHNICAL FIELD

The present invention relates to the field of medical devices and, in particular, to a medical implant placement system.

BACKGROUND

In recent years, transcatheter vascular stenting has been a common minimally invasive therapy for the treatment of cardiovascular diseases. It involves loading a prosthetic stent into a delivery system and then releasing the prosthetic stent to an appropriate site by manipulating a catheter in the delivery system. For patients with heart valve disease, transcatheter vascular stent placement can avoid the highly traumatic thoracotomy and cardiac arrest that would be required for ordinary surgical treatment.

This technique requires precise and stable implantation of a stented valve prosthesis in an appropriate site by a surgeon's operation. However, typical application systems for this purpose typically rely on mechanical power transmission and therefore suffer from a number of problems including a heavy and bulky manipulation handle, which cannot be manipulated as freely and smoothly as commonly used surgical instruments, and inaccurate surgeon control over the placement system. Additionally, the operation of delivery systems that rely on mechanical power transmission is generally complicated, which indirectly increases the time required for a surgical procedure using the system and has a direct impact on the results of the procedure.

DESCRIPTION OF THE INVENTION

An objective of the present invention is a medical implant placement system that allows robust and efficient operation that involves simplified steps, reducing the time required for any surgical procedure that uses the system and resulting in a higher success rate thereof. Furthermore, it can be used with different actuators suitable for various surgical procedures, which effectively reduces the cost of said procedure.

To this end, the present invention presents a medical implant placement system that includes a placement assembly and a drive assembly, which are coupled to each other. The drive assembly includes a motor assembly and a hydraulic assembly, which are coupled to each other.

The delivery assembly includes a catheter component and a pressure component. The catheter component includes a fixed tube and a movable tube. The mobile tube can move with respect to the fixed tube.

The pressure component includes a hydraulic chamber and a moving element. The mobile element is arranged inside the hydraulic chamber and coupled to the mobile tube. The motor assembly is configured to drive the hydraulic assembly to supply a medium to the hydraulic chamber, thereby causing the movable member and the movable tube to move relative to the fixed tube.

Optionally, the movable element may divide the hydraulic chamber into a release cavity and a closure cavity, which are axially adjacent to each other,

wherein, as a result of the hydraulic assembly supplying the medium to the release cavity, the movable element and the movable tube move in a first direction with respect to the fixed tube, and

wherein, as a result of the hydraulic assembly supplying the medium to the closure cavity, the movable element and the movable tube move relative to the fixed tube in a second direction opposite to the first direction.

Optionally, the catheter component may include a set of outer tubes and a set of inner tubes, the set of outer tubes being arranged on the set of inner tubes to be movable relative thereto,

wherein one of the set of outer and inner tubes is configured as a fixed tube and the other as a movable tube, or wherein each of the sets of outer and inner tubes can alternate between acting as a fixed tube and acting as a movable tube.

Optionally, in case one of the sets of outer and inner tubes is configured as a fixed tube and the other as a mobile tube, there may be a hydraulic chamber and a mobile element that is arranged in the hydraulic chamber and configured to drive movement. of the set of exterior or interior tubes.

In case each of the sets of outer and inner tubes can alternate between acting as a fixed tube and acting as a moving tube, there may be two hydraulic chambers arranged therein within respective moving elements, in which the moving element of one of the hydraulic chambers is configured to drive the movement of the set of outer tubes, and the mobile element of the other of the hydraulic chambers is configured to drive the movement of the set of inner tubes.

Optionally, if there is a hydraulic chamber, and if the inner tube assembly is configured as a moving tube,

The inner tube assembly may include a conical tip, a sheath, and an inner tube, the conical tip secured to both the sheath and the inner tube, and the outer tube assembly may include a retaining tip, a connecting tube, and a tube. outer tube, which are sequentially coupled to each other along an axis of the set of outer tubes from a distal end to a proximal end thereof, the mobile element fixed to the inner tube, the inner tube inserted movably sequentially through the retaining tip, the connecting tube and the outer tube.

Alternatively, if there is a hydraulic chamber, and if the outer tube assembly is configured as a moving tube,

The outer tube assembly may include a sheath and an outer delivery tube, which are coupled together, and the inner tube assembly may include a conical tip, a distal inner tube, a retention tip, and a proximal inner tube, the tapered tip proximally coupled to a distal end of the distal inner tube, the distal inner tube coupled proximally to the retention tip, the retention tip fixedly disposed at a distal end of the proximal inner tube, the placement outer tube coupled to the element mobile.

Optionally, the placement assembly may further include a handle component disposed at a proximal end of the catheter component,

wherein, if the set of outer tubes is configured as a moving tube, the hydraulic chamber includes a first hydraulic chamber configured to receive the medium and therefore drive movement of the set of outer tubes, the first hydraulic chamber connected to a pair of movably arranged conduit connectors in the handle component, the conduit connectors configured to move in respective guide channels formed in the handle component.

Optionally, the drive assembly may further include a control box, in which both the motor assembly and the hydraulic assembly are housed, the control box having a pair of conduit interfaces, the conduit interfaces connected to the hydraulic assembly. , the conduit interfaces respectively connected to the release and closure cavities of the hydraulic chamber through medium supply conduits,

The control box is also provided with a human-machine interface, configured for the input of information that contains at least one of the speed of movement and distance of the moving tube and pressure of the medium.

Optionally, there may be one or more mobile tubes,

in which, if there is a mobile tube, there is also a hydraulic chamber, in which a mobile element is arranged to be able to drive the movement of the mobile tube, or

in which, if there is a plurality of movable tubes, there is also a plurality of hydraulic chambers, in each of which a movable element is arranged to be able to actuate the movement of a respective one of the movable tubes, and the hydraulic assembly is configured to selectively supply the medium to one of the hydraulic chambers.

Optionally, there may be a plurality of hydraulic chambers, a motor assembly and a hydraulic assembly,

wherein the drive assembly further includes a switching control module connected to both the hydraulic assembly and the positioning assembly, the switching control module being configured to selectively connect the hydraulic assembly to one of the hydraulic chambers, allowing so the hydraulic assembly supplies the medium to the selected hydraulic chamber.

Optionally, the switching control module may include a diverter solenoid valve including a plurality of valve banks and two connection ports, the two connection ports connected to the hydraulic assembly, the valve banks connected to the positioning assembly, each including of the valve banks two valves, each of the valve banks configured to control the connection of a respective of the hydraulic chambers with the hydraulic assembly, wherein, when the two connection ports are brought into communication with one of the valve banks, a respective of the hydraulic chambers is connected to the hydraulic assembly.

Optionally, there may be two hydraulic chambers, which are respectively a first hydraulic chamber and a second hydraulic chamber,

wherein the catheter component includes a set of outer tubes, an intermediate tube and a set of inner tubes, the set of outer tubes arranged on the set of inner tubes and the intermediate tube, both the set of outer tubes and the intermediate tube being movable. the set of inner tubes with respect to the intermediate tube, the intermediate tube arranged within an outer placement tube and located between the outer placement tube and an inner tube, one of the set of outer tubes and the set of inner tubes selectively configured as a tube movable, the set of outer tubes including a proximal sheath and the outer delivery tube, the outer delivery tube fixed distally to a proximal end of the proximal sheath,

the inner tube assembly including a conical tip, a distal sheath and the inner tube, the inner tube distally coupled to the conical tip, the distal sheath distally attached to a proximal end of the conical tip, and

in which the second hydraulic chamber is provided inside with a second mobile element that is coupled to the inner tube to be able to drive the movement of the inner tube, and the first hydraulic chamber is provided inside with a first mobile element that is coupled to the outer placement tube in order to activate the movement of the outer placement tube.

Optionally, the hydraulic chamber may be provided proximally with a first sealing ring and distally with a second sealing ring, and the moving element may be provided with a third sealing ring.

Optionally, the delivery assembly may further include a bending control component including a bending control chamber and a bending control mechanism, the bending control mechanism configured to control bending of the catheter component. , the bending control chamber configured to hydraulically actuate the bending control mechanism to move and thereby adjust the bending curvature of the catheter component.

Optionally, the delivery system may further include a control assembly communicatively connected to the motor assembly, wherein the motor assembly is configured to actuate the hydraulic assembly to supply the medium to the hydraulic chamber under the control of the control assembly, and the control assembly is arranged independently of both the placement assembly and the transmission assembly.

Optionally, the control assembly may include a control button and a communication interface, the communication interface configured for wired or wireless communication with the motor assembly, the control button configured to produce a control signal, wherein the motor assembly is configured to drive, under the control of the control signal, the hydraulic assembly configured to selectively supply the medium to one of the release and closure cavities in the hydraulic chamber.

Optionally, the drive assembly can be arranged independently of the placement assembly.

Optionally, the hydraulic chamber may be defined in the catheter component to extend along an axis thereof to its distal end. Alternatively, the hydraulic chamber may be defined in the handle component, wherein the handle component is provided at a proximal end of the catheter component.

The medical implant delivery system of the present invention uses electrical and hydraulic energy to cause the catheter component to move to achieve loading and release of a medical implant. With this arrangement, the unique placement system can withstand various loads and therefore provide a wide range of thrust forces suitable for the placement of different medical implants. Therefore, the delivery system can be used flexibly with various medical implants. Additionally, in the medical implant delivery system of the present invention, the actuation movement of the catheter component through the combined use of electrical and hydraulic energy allows the actuator (i.e., the catheter part) to have a weight and a Reduced overall volume, increasing ease of use and control precision during placement. Additionally, the placement assembly can be reused with different actuators suitable for various surgical procedures, effectively reducing the cost of any surgical procedure using the system.

In the medical implant placement system of the present invention, the drive assembly is preferably arranged independently of the placement assembly (i.e., the drive assembly is preferably not arranged in the placement assembly) thereby allowing , that the catheter part has an additionally reduced volume and weight. This further improves the precision of control during placement of the medical implant and prevents the operator's operation from being affected by excessive loading on the placement assembly, resulting in greater operating comfort and a higher surgical success rate. Additionally, since the drive assembly is independent of the placement assembly, they are less dependent on each other. Therefore, the positioning assembly can be modified in an easier way with less attention paid to the drive assembly, for example, to give it a new function. This may facilitate functional extension of the placement system to improve performance.

For a surgeon, the medical implant placement system of the present invention is easy and convenient to operate. In particular, if the hydraulic chamber is defined proximal to the placement assembly (i.e., at the handle), greater safety can be achieved, compared to the case where the hydraulic chamber is defined distal to the placement assembly (i.e. that is, in the catheter component).

In the medical implant placement system of the present invention, a plurality of hydraulic chambers can be defined, and in this case, the switching control module can be used to switch operation between the hydraulic chambers. This allows all hydraulic chambers to be controlled with a single transmission assembly, simplifying the structure of the transmission part and making the positioning system suitable for use in a wider range of applications.

BRIEF DESCRIPTION OF THE DRAWINGS

Those skilled in the art will appreciate that the accompanying drawings are given to facilitate a better understanding of the present invention and do not limit the scope thereof in any sense, in which:

Figure 1 is a schematic diagram showing the structure of a placement assembly in a placement system according to a preferred embodiment of the present invention;

Figure 2 is a schematic diagram showing the structure of a drive assembly and a control assembly in a supply system according to a preferred embodiment of the present invention, which communicate with each other by cable;

Figure 3 is a schematic diagram showing the structure of a control box in a drive assembly according to a preferred embodiment of the present invention;

Figure 4 is a schematic diagram showing the structure of a drive assembly according to a preferred embodiment of the present invention; Figure 5 is a schematic diagram showing the structure of a control assembly according to a preferred embodiment of the present invention;

Figure 6a is an axial cross-sectional view of a supply assembly according to a first embodiment of the present invention, which is in a closed configuration;

Figure 6b is an axial cross-sectional view of the supply assembly according to the first embodiment of the present invention, which is in a release configuration;

Figure 7a is an axial cross-sectional view of a supply assembly according to a second embodiment of the present invention, which is in a closed configuration;

Figure 7b is an axial cross-sectional view of the supply assembly according to the second embodiment of the present invention, which is in a release configuration;

Figure 8a is an axial cross-sectional view of a supply assembly according to a third embodiment of the present invention, which is in a closed configuration;

Figure 8b is an axial cross-sectional view of the supply assembly according to the third embodiment of the present invention, which is in a release configuration;

Figure 9a schematically illustrates how a hydraulic chamber is brought into communication as a result of a switching action of a diverter solenoid valve in accordance with the third embodiment of the present invention;

Figure 9b schematically illustrates how another hydraulic chamber is brought into communication as a result of another switching action of the diverter solenoid valve in accordance with the third embodiment of the present invention;

Figure 10a is an axial cross-sectional view of a supply assembly according to a fourth embodiment of the present invention, which is in a closed configuration;

Figure 10b is an axial cross-sectional view of the supply assembly according to the fourth embodiment of the present invention, which is in a release configuration;

Figure 11a is a schematic diagram showing the structure of a bending control component according to a fifth embodiment of the present invention; and

Figure 11b schematically illustrates how the bending control component controls distal bending of a catheter component according to the fifth embodiment of the present invention.

In these figures:

1- placement set; 101, 102- conduit connector;

2- drive assembly; 21- duct interface; 22- emergency stop device; 23- human-machine interfaces; 24- signal input port; 25-control box support; 26- rotating motor; 27- power transmission mechanism; 28- linear module; 29- coupling block; 30- hydraulic cylinder; 310-first exit; 320- second exit; 330- piston;

3- medium supply conduit;

4- control set;

401- communication interface; 402- control button; 402; 403- outgoing;

5- signal control line;

6- diverter solenoid valve; 61- casing; 62- first diverter valve; 63- second diverter valve; 64- third diverter valve; 65- fourth diverter valve; 66-first connection port; 67- second connection port; 68- push bar; 69-sealing ring;

100- first type placement set; 121- distal sealing ring; 122- retention tip; 123- connecting tube; 124- outer tube; 125- closure duct connector; 126- release duct connector; 127- proximal sealing ring; 111-conical tip; 112- cover; 113- lumen of guide wire; 114- mobile element; 115- inner tube; 116- closing cavity; 117-release cavity; 118- accommodation;

200- second type placement set; 221-case; 222- outer placement tube; 223- release duct connector; 224- closure duct connector; 225- mobile element; 226- accommodation; 227- cavity; 211- conical tip; 212- distal inner tube; 213- retaining tip; 214- distal sealing ring; 215- inner tube proximal; 216- proximal sealing ring; 217- lumen of guide wire; 218-release cavity; 219-closing cavity;

300- third type placement set;

31- set of inner tubes; 311- conical tip; 312- distal sheath; 313- inner tube; 314 second moving element;

32- intermediate tube assembly; 321- second distal sealing ring; 322- retaining tip; 323- connecting tube; 324- intermediate tube; 325- first mobile element;

33- set of outer tubes; 331- proximal sheath; 332- first distal sealing ring; 333-placement outer tube;

325- first mobile element; 332- first distal sealing ring; 336- first proximal sealing ring; 314- second mobile element; 321- second distal sealing ring; 326- second proximal sealing ring;

34- handle component; 341- guide channel; 342- accommodation; 334- first release conduit connector; 335- first closure duct connector; 327- second closure tube connector; 328- second release tube connector;

400- fourth type placement set; 41- set of inner tubes; 411- conical tip; 412- distal inner tube; 413- retaining tip; 414- proximal inner tube; 42-set of outer tubes; 421- sheath; 422- outer placement tube; 43-pressure component; 433- hydraulic chamber; 423- mobile element; 44- handle component; 431- distal sealing ring; 432- proximal sealing ring; 434- release tube connector; 435- closure duct connector;

51- cable; 52- cable fixing element; 55- bar; 53, 54- conduit connector.

DETAILED DESCRIPTION

The objectives, advantages and features of the present invention will become clearer upon reading the following more detailed description of the present invention with reference to the accompanying drawings. It must be taken into account that the figures are given in a very simplified manner, not necessarily to an exact scale and with the sole purpose of facilitating an easy and clear description of the embodiments. As used here, the singular forms "a", "an" and "the" include plural referents, unless the context clearly indicates otherwise. As used herein, the term "or" is generally used to mean "and/or" unless the context clearly indicates otherwise. Furthermore, the use of the terms "first", "second", "third" and "fourth" herein are for illustrative purposes only and should not be construed as denoting or implying relative importance or implicitly indicating the number of the referenced item. Consequently, defining an element with “first”, “second”, “third” or “fourth” is an explicit or implicit indication of the presence of one or at least two of the elements. In the description given here, the term "plurality" is defined as two or more than two, unless otherwise noted.

Below, the terms "distal end" and "proximal end" may be used for ease of description. A "distal end" of a delivery system refers to its end furthest from an operator who is operating the system, which first enters a patient's body, while a "proximal end" of the system refers to its end. closest to the operator. The term "axial" refers to a direction along an axis of a placement assembly. Furthermore, the following description sets forth numerous specific details to provide a more complete understanding of the present invention. However, it will be clear to those skilled in the art that the present invention can be practiced without one or more of these specific details. In other cases, well-known technical characteristics have not been described so as not to unnecessarily complicate the understanding of the invention.

In essence, the present invention presents a medical implant placement system that includes a placement assembly and a drive assembly, the which are coupled to each other. The drive assembly includes a motor assembly and a hydraulic assembly, which are coupled to each other. The delivery assembly includes a catheter component and a pressure component. The catheter component includes a fixed tube and a movable tube. The mobile tube can move with respect to the fixed tube. The pressure component includes a hydraulic chamber and a moving element. The mobile element is movably arranged within the hydraulic chamber. The moving tube is coupled to the moving element. The motor assembly is configured to drive the hydraulic assembly to supply a medium to the hydraulic chamber, thereby causing the movable member and the movable tube to move relative to the fixed tube. Furthermore, the movable element divides the hydraulic chamber into a release cavity and a closure cavity, which are axially adjacent to each other. When the hydraulic assembly supplies the medium to the release cavity, the movable element and the movable tube move relative to the fixed tube in a first direction. When the hydraulic assembly supplies the medium to the closure cavity, the movable element and the movable tube move relative to the fixed tube in a second direction. In this way, the movement of the mobile tube with respect to the fixed tube is achieved. The first direction is opposite to the second direction.

The delivery system of the present invention uses electrical and hydraulic energy to drive the movement of the catheter component, thereby achieving the loading and release of a medical implant. In this way, the unique placement system can withstand various loads and therefore provide a wide range of thrust forces suitable for the placement of different implants. It will be appreciated that different medical implants require different thrust forces. For example, valve stents require relatively large pushing forces. The delivery system of the present invention has good flexibility since it can be suitably used for various medical implants. Additionally, actuating movement of the catheter component through the combined use of electrical and hydraulic energy allows the actuator (i.e., delivery assembly) to have a reduced overall weight and volume, increasing ease of use and precision of the control during operation. Additionally, since the drive assembly is removably attached to the actuator, the drive assembly can be reused by simply replacing the actuator with another actuator. This can reduce the cost of any surgical procedure using the system.

Furthermore, in accordance with the present invention, it is preferred that the drive assembly be independent of the positioning assembly. That is, the drive assembly is preferably not disposed in the placement assembly, allowing the placement assembly to have a reduced volume and weight. This further improves the precision of control during placement of the medical implant and prevents the operator's operation from being affected by excessive loading on the placement assembly, resulting in greater operating comfort and a higher surgical success rate. Additionally, since the drive assembly is independent of the placement assembly, they are less dependent on each other. Therefore, the positioning assembly can be more easily modified with less attention paid to the drive assembly, for example to give it a new function. This may facilitate functional extension of the placement system to improve performance. Furthermore, the hydraulic chamber is preferably defined in a handle component, which is disposed at a proximal end of the catheter component. Therefore, the hydraulic chamber is located at a proximal end of the placement assembly, allowing an even safer hydraulic supply. It is evident that, in other embodiments, the hydraulic chamber may alternatively be defined in the catheter component to extend towards a distal end thereof along its axis.

The medical implant to which the placement system of the present invention is applicable can be selected based on the target site in which it is to be placed. Examples of medical implants may include, but are not limited to, valve stents (e.g., cardiac valve stents). Those skilled in the art will appreciate that, aside from valve stents, the delivery system described herein can also be used to deliver other implants (e.g., vascular stents, aneurysm stents, balloon-expandable stents, ureteral stents, prostate stents). , peripheral stents, tracheobronchial stents, etc.) to a designated site on the body. Other examples of medical implant may include, but are not limited to, transplants, embolization devices, and occlusion devices. The present invention is not limited to any type of delivery route for the delivery system, and access of the implant to a site in need of treatment can be provided by various techniques and methods such as percutaneous transluminal angioplasty (PTA).

The positioning system of the present invention may further include a control assembly communicatively connected to the motor assembly. The control assembly is configured to control an operating state of the motor assembly, which essentially includes a direction of rotation of a motor (forward or reverse). Optionally, the control assembly can also control the activation, deactivation and direction of rotation of the motor assembly. Preferably, the control assembly can be arranged independently of the drive assembly. "Independently arranged" here is intended to mean that the two assemblies are neither integrated into a single housing nor closely connected to each other in physical space. For example, the control assembly cannot be arranged in either the drive assembly or the positioning assembly, so that the control assembly, the positioning assembly and the drive assembly are independent of each other. This provides the advantage of avoiding expanding the volume of the drive assembly and thus allowing it to occupy a smaller space next to an operating bed and not affect the surgical operation. Additionally, the control assembly can be sterilized independently, allowing for easier sterilization and ensuring surgical safety. Furthermore, it is preferred that the control assembly be presented in portable form. In this way, on the one hand, the control set can be easily sterilized, ensuring surgical safety. On the other hand, it is compact and lightweight, allowing easy operation by the surgeon.

Next, the placement system of the present invention will be described in greater detail by means of some preferred embodiments with reference to the accompanying drawings.

Referring to Figures 1 to 2, in one embodiment of the present invention, a medical implant delivery system is provided that includes a delivery assembly 1 and a drive assembly 2. The delivery assembly 1 includes a catheter component and a pressure component. The catheter component includes a fixed tube and a movable tube. The mobile tube can move with respect to the fixed tube. It will be appreciated that, in some implementations, a set of inner tubes in the catheter component may be configured as a movable tube, while a set of outer tubes in the catheter component may be configured as a fixed tube. In these cases, the set of inner tubes always acts as a moving tube and the set of outer tubes always acts as a fixed tube. In some implementations, the set of outer tubes in the catheter component may be configured as a movable tube, while the set of inner tubes in the catheter component may be configured as a fixed tube. In these cases, the set of outer tubes always acts as a moving tube and the set of inner tubes always acts as a fixed tube. In some other implementations, each of the inner and outer tube sets can be alternated between acting as a fixed tube and acting as a moving tube. In In other words, when the set of outer tubes acts as a moving tube, the set of inner tubes acts as a fixed tube so that the set of outer tubes is movable with respect to the set of inner tubes. When the set of inner tubes acts as a moving tube, the set of outer tubes acts as a fixed tube so that the set of inner tubes is movable with respect to the set of outer tubes. In these cases, there may be multiple moving tubes, each of which typically features a hydraulic chamber.

The pressure component includes a hydraulic chamber and a moving element. The movable element is arranged within the hydraulic chamber, the hydraulic chamber is divided by the movable element into a release cavity and a closure cavity, which are axially adjacent to each other. The moving tube is coupled to the moving element. In the case of a single moving tube, there is usually only one hydraulic chamber. The mobile element is arranged in a hydraulic chamber to drive the movement of the mobile tube. In the case of several moving tubes, there are correspondingly several hydraulic chambers. Preferably, the same number of hydraulic chambers as mobile tubes can be provided. Each of the mobile elements is arranged within one of the respective hydraulic chambers to drive the movement of one of the respective mobile tubes. Additionally, a hydraulic assembly can selectively supply a medium to one of the multiple hydraulic chambers.

The drive assembly 2 is preferably arranged independently of the supply assembly 1 so that the drive assembly 2 and the supply assembly 1 are separated or distant from each other in space. That is, the transmission assembly 2 is not arranged in the placement assembly 1. In other words, the placement assembly 1 and the transmission assembly 2 are neither integrated into a single housing nor closely connected to each other in physical space. . The drive assembly 2 is configured to supply the medium to the positioning assembly 1 (more precisely, to the hydraulic chamber). More specifically, as shown in Figure 2, the drive assembly 2 supplies the medium to the placement assembly 1 through medium supply conduits 3 (each of the medium supply conduits 3 is connected to both the positioning assembly 1 and transmission assembly 2). Preferably, the medium supply conduits 3 can withstand high pressures (i.e., are high pressure conduits) that may be necessary for the placement of various medical implants using the delivery system. The present invention is not limited to any particular number of medium supply tubes 3. Rather, this number may depend on the number of hydraulic chambers. The drive assembly 2 uses hydraulic and electrical energy to supply the medium to the supply assembly 1. Specifically, the drive assembly 2 includes a motor assembly and a hydraulic assembly, which are coupled to each other. The motor assembly provides the energy necessary to drive the hydraulic assembly to supply the medium to the hydraulic chamber. Preferably, the drive assembly 2 also includes a control box (not indicated), in which both the motor assembly and the hydraulic assembly are housed. The control box is configured to provide protection to the motor assembly and hydraulic assembly to facilitate its arrangement next to an operating bed.

Preferably, the placement system further includes a control assembly 4, the control assembly 4 being in communication with the drive assembly 2 via cable or wirelessly. The control assembly 4 is configured to provide the drive assembly 2 with control signals, under whose control the motor assembly operates to drive the hydraulic assembly to supply the medium to the hydraulic chamber, thereby achieving operations including loading and releasing the implant. doctor and return positioning assembly 1 to a rest configuration. In the present embodiment, the control assembly 4 can communicate by cable with the drive assembly 2, through a signal control line 5. Furthermore, the control assembly 4 is also not arranged in the placement assembly 1. It is That is, the placement set 1 and the control set 4 are separated or distant from each other in space. In other words, the placement assembly 1 and the control assembly 4 are neither integrated into a single housing nor closely connected to each other in physical space. More preferably, the control assembly 4 is also not arranged in the drive assembly 2, the control assembly 4, the drive assembly 2 and the positioning assembly 1 are separated from each other.

Furthermore, the motor assembly is communicatively connected to the control assembly 4 in order to receive control signals from the control assembly 4. For example, the control signals may include a (first) release signal and a (second) close signal. . Upon receiving the release signal from the control assembly 4, the motor assembly operates the hydraulic assembly to supply the medium to the release cavity of the hydraulic chamber. Upon receiving the closing signal from the control assembly 4, the motor assembly operates the hydraulic assembly to supply the medium to the closing cavity of the hydraulic chamber.

In one embodiment, the motor assembly includes a rotary motor and a motion conversion mechanism to transform rotary motion of the rotary motor into linear motion and drive a piston to move in the hydraulic assembly. In another embodiment, the motor assembly includes a linear motor for performing linear motion to drive the piston to move in the hydraulic assembly.

More specifically, with reference to Figure 4, the hydraulic assembly includes a hydraulic cylinder 30 and the piston 330. The piston 330 is movably arranged within the hydraulic cylinder 30. The piston 330 divides an interior space of the hydraulic cylinder 30 into a release drive chamber and a closing drive chamber. The release drive chamber defines a first outlet 310, and the close drive chamber defines a second outlet 320. The present invention is not limited to any particular relative position of the first outlet 310 and the second outlet 320, provided that in The hydraulic cylinder 30 has two outputs, one output communicates with the release actuation chamber on one side of the piston 330 and another output communicates with the closure actuation chamber on the other side of the piston 330.

In an example embodiment, continuing with reference to Figure 4, the drive assembly 2 includes the rotary motor 26, a power transmission mechanism 27, a linear module 28, a coupling block 29 and the hydraulic assembly, which They are coupled together online. The power transmission mechanism 27 may include a coupling and/or a reducer. The linear module 28 acts as the motion conversion mechanism mentioned above. Optionally, the linear module can be provided as a lead screw or toothed belt. The coupling block 29 is coupled to both an outlet end of the linear module 28 and a plunger in the hydraulic assembly. In this way, the rotational motion of the rotary motor 26 can be transmitted to the linear module 28 through the power transmission mechanism 27 and converted into linear motion by the linear module 28, which drives the piston 330 to move in the hydraulic assembly. . It will be recognized that, in case the motor is implemented as a linear motor, a moving flat surface of the linear motor is coupled to the piston in the hydraulic assembly through the coupling block 29. The drive assembly 2 may further include, a reducer to regulate the power output of the motor.

Each of the two outlets of the hydraulic cylinder 30 may be connected to one of the medium supply conduits 3. Optionally, a pair of conduit interfaces 21 may be provided in the control box, and each of the outlets of the hydraulic cylinder 30 may be connected to a respective one of the conduit interfaces 21 in the control box. In this way, the medium can flow from the release drive chamber successively through the first outlet 310, one of the conduit interfaces 21 and one of the medium supply conduits 3, towards the release cavity of the chamber hydraulic, allowing the release, at a distal end, of the placement assembly. Likewise, the medium can flow from the closure drive chamber successively through the second outlet 320, the other conduit interface 21 and the other medium supply conduit 3, towards the closure cavity of the hydraulic chamber, allowing the closure at the distal end of the placement assembly.

As shown in Figure 1, at least one pair of conduit connectors 101, 102 may be arranged in the placement assembly 1, and the release and closure cavities of the hydraulic chamber may be connected to the respective conduit connectors. Furthermore, each of the medium supply conduits 3 may be connected at one end to a respective one of the conduit connectors and at the other end to a respective one of the conduit interfaces 21. The same number of conduit interfaces may be provided. 21 than medium supply conduits 3. For example, the placement assembly 1 may have a single hydraulic chamber defining two cavities: a release cavity and a closure cavity. Each of the cavities may be connected to the hydraulic assembly via a conduit connector and a medium supply conduit 3. In this case, the drive assembly 2 may have two conduit interfaces 21, each connected to a respective one. of the medium supply conduits 3. In alternative embodiments, multiple hydraulic chambers (e.g., two) may be provided. In these embodiments, each of the hydraulic chambers may be provided with a pair of conduit connectors, while a total of only two conduit interfaces may be provided.

Continuing with reference to Figures 2 to 5, the control assembly 4 is preferably arranged as a portable device, such as a handheld remote control. The portable device may have a control button 402 and a communication interface 401. The communication interface 401 is configured for wired or wireless communication with the motor assembly. The control button 402 is configured to produce a control signal, under which control the motor assembly actuates the hydraulic assembly to selectively supply the medium to one of the release and closure cavities of the hydraulic chamber. The control button 402 has a first position and a second position. When the control button 402 is switched to the first position, for example, on the left side, the portable device sends a release signal. When the control button 402 is switched to the second position, for example, on the right side, the portable device sends a closing signal through the communication interface 401. The release or closing signal can be transmitted to the drive assembly. 2 through the communication interface 401. Preferably, the control button 402 has markings indicating directions in which the button is switched, such as arrows pointing respectively to the left and to the right. More preferably, the control button 402 has a projection 403 capable of providing the operator with a tactile sensation and therefore an indication of the position of the button. For example, a projection 403 may be provided on one side of the center of the control button 402, while no projection 403 is provided on the other side. Therefore, the operator can be aware that the release or close signal will be sent if the button is switched to the side where the manipulator feels the projection 403 with the manipulator's hand and that the other actuation signal is will be sent when the button is switched to the side where the manipulator does not feel the projection 403 with the manipulator's hand.

In one embodiment, the drive assembly 2 preferably further includes an emergency stop device 22 for cutting off power to the motor assembly in an emergency situation. Furthermore, the emergency stop device 22 may be provided in the control box, the emergency stop device 22 may include an emergency stop button. The drive assembly 2 may further include a human-machine interface 23 arranged in the control box, certain information may be input through the human-machine interface 23. The information may include at least one of a speed and distance of the moving tube and a pressure of the medium. It may also include the type of medical implant. Drive assembly 2 can operate according to the information entered. In the illustrated implementation, drive assembly 2 communicates with control assembly 4 by cable. In this case, the control box may have a signal input port 24. One end of the signal control line 5 may be removably connected to the signal input port 24, and the other end of the signal control line 5 may be removably connected to the signal input port 24. Signal control 5 may be connected to a corresponding port on control assembly 4. In other implementations, drive assembly 2 may communicate with control assembly 4 wirelessly. In this case, the signal input port 24 can be used as a signal receiving port for wireless communications. The drive assembly 2 may further include a control box bracket 25, the control box being arranged on the control box bracket 25. Using the control box bracket 25, the drive assembly 2 can be conveniently arranged near an operating bed. Preferably, the control box support 25 is equipped with wheels, which allow easy movement and relocation on the ground.

Preferably, operation of the delivery system of the present embodiment begins by inputting information such as the type of implant, a speed of movement of the moving tube, and a pressure of the medium through the human-machine interface 23 before surgery. Then, the control button 402 is switched so that a control signal is sent and transmitted to the drive assembly 2. Upon receiving the control signal, the rotary motor 26 in the drive assembly 2 rotates forward or reverse, and the rotation is transmitted through the power transmission mechanism 27 to the linear module 28 and is thus converted into a linear movement. Under the action of linear motion, the coupling block 29 drives the piston 330 to move linearly in the hydraulic cylinder 30 along its axis. Furthermore, when the control button 402 is switched counterclockwise to the first position, the release signal is sent to the motor assembly, causing the rotary motor 26 to rotate forward. In turn, the forward rotation causes the piston 330 to move to the left of Figure 4 (in a third direction), compressing the medium in the release actuation chamber of the hydraulic cylinder 30. As a result, the medium flows successively through the first outlet 310, one of the conduit interfaces 21, the medium supply conduits 3 and one of the conduit connectors 101 into the release cavity of the placement assembly 1. When a pressure of the medium in the release cavity overcomes the axial static friction, between the mobile element and the fixed tube, the mobile element pushes the mobile tube to move relative to the fixed tube in a first direction (towards a proximal or distal end of the fixed tube). On the contrary, when the control button 402 is switched clockwise to the second position, the closing signal is sent to the motor assembly, causing the rotary motor 26 to rotate backward. In turn, the rearward rotation causes the piston 330 to move to the right of Figure 4 (in a fourth direction), compressing the medium in the closure actuation chamber. As a result, the medium flows successively through the second outlet 320, the other conduit interface 21 and the other supply conduit. middle 3 and the other conduit connector 102 towards the closure cavity. When the pressure of the medium in the closure cavity exceeds the axial static friction between the moving element and the fixed tube, the moving element pushes the moving tube to move relative to the fixed tube in a second direction, the second direction being opposite to the first. address.

It will be appreciated that the medium may be pre-stored in the hydraulic cylinder 30. For example, prior to connecting the medium supply lines 3 to the supply assembly 1, the medium may be drawn into the hydraulic cylinder 30 through the supply lines. of medium 3 for storage. Alternatively, storage of the medium in the hydraulic cylinder 30 can be achieved using another suitable solution. Furthermore, the conduit interfaces 21 in the control box, which are connected to the medium supply conduits 3, are preferably implemented as quick disconnect interfaces, which allow quick connection and disconnection of the medium supply conduits 3. Additionally, one or more control buttons 402 may be provided. In the case of one control button, multiple positions may be defined for it. In the case of more than one control button, the control buttons 402 may correspond to respective positions. The drive assembly 2 may further include a pressure sensor for detecting a pressure of the medium flowing into the release or closure cavity. For example, it can detect a medium pressure in the hydraulic cylinder 30 or in a line. Information about the detected pressure can be displayed on the human-machine interface 23. Additionally, drive assembly 2 can make adjustments to a supply pressure based on the sensed pressure to ensure surgical precision. It will also be appreciated that the medium is normally implemented as an incompressible liquid with good fluidity, such as pure water, physiological saline, oil or the like, with physiological saline being preferred. Furthermore, it should be noted that possible structural implementations of the motor assembly include, but are not limited to, those described above, and any other suitable structure may also be used to drive the piston to move linearly forward and backward, as would be known to those skilled in the art. subject.

In the delivery system of the present embodiment, the actuator (i.e., the delivery assembly or the catheter component) may have a reduced overall weight and volume, which increases the ease of use and control precision of the system. placement. Additionally, the placement assembly can be reused with different actuators suitable for various surgical procedures, effectively reducing the cost of any surgical procedure using the system. Furthermore, for a particular loading state of the placement system, a motor with adequate power output and a hydraulic cylinder with adequate pressure support capacity may be used in the placement system to enable robust and efficient release and closure operations. , resulting in ease of use.

Below, preferred embodiments of the supply set 1 will be described in more detail with reference to several examples. It will be appreciated that the present invention is not limited to any particular structure of the supply assembly 1, and possible structural implementations thereof include, but are not limited to, those discussed in the following preferred embodiments.

EMBODIMENT 1

Referring to Figures 6a to 6b, in a first embodiment, a placement assembly 100 of a first type is presented, including a catheter component and a pressure component. The catheter component includes an outer tube set and an inner tube set. The outer tube set is configured as a fixed tube and the set of inner tubes is configured as a movable tube. The outer tube assembly is mounted on the inner tube assembly, and the inner tube assembly is movable relative to the outer tube assembly.

The outer tube assembly includes a retaining tip 122, a connecting tube 123, and an outer tube 124, which are sequentially coupled to each other along an axis of the outer tube assembly from a distal end to a proximal end thereof. . Retention tip 122 is configured to retain a medical implant. The inner tube assembly includes a conical tip 111, a sleeve 112, and an inner tube 115, which are sequentially coupled to each other along an axis of the inner tube assembly from a distal end to a proximal end thereof. That is, the conical tip 111 is secured proximally to both distal ends of the sheath 112 and the inner tube 115. It is preferred that the conical tip 111 be non-invasive. For example, it may be a non-invasive structure that has a conical, partially spherical, circular or other shape that can substantially prevent, inhibit or prevent the tip from causing damage to the target tissue. A proximal end of the sheath 112 may rest against a distal end of the outer tube 124 so that the sheath 112 surrounds all or part of the medical implant.

The pressure component includes a single hydraulic chamber and a movable member 114. The hydraulic chamber is defined in the catheter component, more precisely, between the outer tube 124 and the inner tube 115. The movable member 114 is disposed within the hydraulic chamber. The movable element 114 divides an interior space of the hydraulic chamber into a closure cavity 116 and a release cavity 117, which are axially adjacent and sealed to each other, and to which a medium can be supplied. The moving element 114 is fixed to the inner tube 115 to be able to drive the set of inner tubes to move axially with respect to the set of outer tubes. The inner tube 115 may define a guide wire lumen 113, the guide wire lumen 113 being configured for the passage of a guide wire therethrough. Preferably, the distal end of the hydraulic chamber is provided with a distal sealing ring 121, the distal sealing ring 121 is provided on the retaining tip 122. Preferably, the proximal end of the hydraulic chamber is provided with a sealing ring. proximal seal 127. More preferably, the moving element 114 is also provided with a sealing ring (not indicated).

The first type delivery assembly 100 further includes a handle component disposed at a proximal end of the catheter component. The handle component is fixedly coupled to the outer tube assembly. The handle component typically includes a housing 118, the housing 118 being mounted at the proximal end of the outer tube assembly. The inner tube assembly is inserted through the housing 118. The handle component further includes a pair of tube connectors fixedly disposed in the housing 118. The pair of tube connectors include a closure tube connector 125. and a release tube connector 126. The closure tube connector 125 is connected to both the closure cavity 116 and a medium supply tube 3. The release tube connector 126 is connected to both the release cavity 117 as well as another medium supply tube 3.

In practical use, the motor assembly can drive the hydraulic assembly to supply a medium to the closure cavity 116 of the hydraulic chamber. Under the action of a pressure from the medium, the moving element 114 and the inner tube 115 are actuated to move towards a proximal end of the outer tube 124 (in a first direction) until the sleeve 112 surrounds the retaining tip 122 and the tube. connection 123, bringing the placement assembly to a closed configuration shown in Figure 6a in which the distal end of the catheter component is closed, with the medical implant being loaded therein, or with the delivery assembly returned to its resting configuration. Alternatively, the motor assembly may drive the hydraulic assembly to supply medium to the release cavity 117 of the hydraulic chamber, thereby causing the movable member 114 and the inner tube 115 to move toward the distal end of the outer tube 124. (in a second address). As a result, the sleeve 112 moves away from the retention tip 122, bringing the placement assembly into a release configuration shown in Figure 6b, in which release of the medical implant is allowed. Preferably, the hydraulic assembly supplies the medium to the closure cavity 116 of the hydraulic chamber in response to the reception of a closure signal in the motor assembly from the control assembly 4. Furthermore, the hydraulic assembly supplies the medium to the cavity release 117 of the hydraulic chamber in response to the reception of a release signal in the motor assembly from the control assembly 4.

EMBODIMENT 2

Referring to Figures 7a to 7b, in a second embodiment, a second type placement assembly 200 is provided, which includes a catheter component and a pressure component. The catheter component includes a set of outer tubes and a set of inner tubes. The set of outer tubes is configured as a movable tube and the set of inner tubes is configured as a fixed tube. The outer tube assembly is mounted on the inner tube assembly, and the outer tube assembly is movable relative to the inner tube assembly.

The outer tube assembly includes a sheath 221 and an outer placement tube 222, which are sequentially coupled to each other along an axis of the outer tube assembly from a distal end to a proximal end thereof. The inner tube assembly includes a tapered tip 211, a distal inner tube 212, a retaining tip 213, and a proximal inner tube 215, which are sequentially coupled to each other along an axis of the inner tube assembly from one end. distal to a proximal end thereof. That is, the proximal end of the conical tip 211 is fixed to a distal end of the distal inner tube 212, the proximal end of the distal inner tube 212 is fixed to the retaining tip 213. The retaining tip 213 is fixedly arranged at a distal end of the proximal inner tube 215. A distal end of the sheath 221 may rest against a proximal end of the conical tip 211 so that the sheath surrounds a medical implant or part thereof. It should be noted that, below, only the differences of the second embodiment with respect to the first embodiment will be described, and the description of any common characteristics that it shares with the first embodiment will not be repeated. Reference may be made to the above description of the first embodiment for details of said common features.

In this embodiment, the pressure component includes a hydraulic chamber and a moving element 225. The single hydraulic chamber is defined in the catheter component, more precisely, between the sheath 221 and the proximal inner tube 215 and between the outer placement tube 222 and the proximal inner tube 215. The movable element 225 is movably arranged within the hydraulic chamber. The moving element 225 divides the hydraulic chamber into a release cavity 218 and a closure cavity 219, which are axially adjacent and sealed to each other. The moving element 225 is coupled to the outer positioning tube 222 so as to drive the set of outer tubes to move axially with respect to the set of inner tubes. Preferably, a guide wire lumen 217 is defined in the inner tube assembly. Preferably, the hydraulic chamber is provided at its distal end with a ring. With the distal sealing ring 214, the distal sealing ring 214 is typically disposed on the retaining tip 213. Preferably, the proximal end of the hydraulic chamber is provided with a proximal sealing ring 216. More preferably, the movable member 225 is also provided. provided with a sealing ring.

The second type delivery assembly 200 further includes a handle component disposed at a proximal end of the catheter component. The handle component is movably coupled to the outer tube assembly so that a proximal end of the outer tube assembly can move back and forth within the handle component. The handle component typically includes a housing 226, the housing 226 defines a cavity 227, the proximal end of the outer tube assembly being movably housed in the cavity 227. The handle component further includes a pair of conduit connectors movably arranged in housing 226. The pair of conduit connectors are configured to move together with the outer tube assembly. The pair of tube connectors include a release tube connector 223 and a closure tube connector 224. The release tube connector 223 is connected to both the release cavity 218 and a medium supply tube 3. The Closure tube connector 224 is connected to both closure cavity 219 and another medium supply tube 3.

In practical use, the motor assembly can drive the hydraulic assembly to supply a medium to the release cavity 218 of the hydraulic chamber. Under the action of a pressure from the medium, the moving element 225 and the outer positioning tube 222 are actuated to move towards a proximal end of the set of inner tubes (in a first direction). As a result, the sleeve 221 moves away from the retention tip 211, bringing the placement assembly into a release configuration shown in Figure 7b, in which release of the medical implant is allowed. Alternatively, the motor assembly may drive the hydraulic assembly to supply medium to the closure cavity 219 of the hydraulic chamber, thereby causing the movable member 225 and the outer positioning tube 222 to move toward a distal end of the assembly. of inner tubes (in a second direction). As a result, the sheath 221 moves toward the conical tip 211, bringing the delivery assembly to a closed configuration shown in Figure 7a, in which the catheter component is closed distally, the medical implant being loaded therein, or with the placement assembly returned to its rest configuration.

It will be appreciated that, unlike the first embodiment in which the catheter component is closed distally as a result of movement of the inner tube assembly towards the proximal end of the outer tube assembly and release is achieved at the distal end of the catheter component catheter as a result of the movement of the inner tube assembly towards the distal end of the outer tube assembly, in the second embodiment, release is achieved at the distal end of the catheter component as a result of the movement of the outer tube assembly towards the proximal end of the inner tube assembly, and the catheter component is closed distally as a result of the movement of the outer tube assembly towards the distal end of the inner tube assembly. Typically, the release in the second embodiment occurs in a forward direction, while the release in the first embodiment occurs in a backward direction.

EMBODIMENT 3

Referring to Figures 8a to 8b, in a third embodiment, a third type placement assembly 300 is provided, which includes a catheter component and a pressure component. The catheter component includes a set of inner tubes 31, a set of intermediate tubes 32 and a set of outer tubes 33. The set of outer tubes 33 is arranged on the set of intermediate tubes 32 and the set of inner tubes 31. Both the set of outer tubes 33 and the set The inner tubes 31 are movable with respect to the set of intermediate tubes 32. The set of outer tubes 33 can act as a mobile tube or a fixed tube. The set of inner tubes 31 can also act as a mobile tube or a fixed tube. Therefore, in this embodiment, there may be two movable tubes.

The outer tube assembly 33 includes a proximal sheath 331 and an outer delivery tube 333. The intermediate tube assembly 32 includes a retaining tip 322, a connecting tube 323, and an intermediate tube 324. The inner tube assembly 31 includes a conical tip 311, a distal sheath 312 and an inner tube 313. A proximal end of the proximal sheath 331 is fixedly coupled to a distal end of the outer delivery tube 333. The two may be integrally formed or independent. The distal end of the connector tube 323 is attached to the retaining tip 322 and the proximal end of the connector tube 323 is attached to a distal end of the intermediate tube 324. The distal end of the inner tube 313 is attached to the conical tip 311, and the distal end of the distal sleeve 312 is attached to the proximal end of the conical tip 311. The intermediate tube 324 is disposed within the outer placement tube 333. The intermediate tube 324 is disposed between the outer placement tube 333 and the inner tube 313. The intermediate tube assembly 32 is held stationary, while the outer tube assembly 33 and the inner tube assembly 31 can both move relative to the intermediate tube 324. When the outer tube assembly 33 moves With respect to the set of intermediate tubes 32, the set of inner tubes 31 can remain stationary with respect to the set of intermediate tubes 32. When the set of inner tubes 31 moves relative to the set of intermediate tubes 32, the set of outer tubes 33 can remain stationary. stationary with respect to the set of intermediate tubes 32 The proximal sheath 331 can be supported with the distal sheath 312 to enclose a medical implant therein. It should be noted that, below, only the differences of the third embodiment with respect to the first or second embodiment will be described, and the description of any common characteristics that it shares with the first or second embodiment will not be repeated. Reference may be made to the above description of the first or second embodiment for details of such common features.

In this embodiment, the pressure component includes two hydraulic chambers, hereinafter referred to as the first hydraulic chamber and the second hydraulic chamber respectively. The two hydraulic chambers are both defined in the catheter component. Specifically, the first hydraulic chamber is defined between the outer positioning tube 333 and the intermediate tube 324 to extend towards the distal end thereof, and the second hydraulic chamber is defined between the connector tube 323 and the inner tube 313 and between the tube intermediate tube 324 and the inner tube 313. Each of the moving elements is arranged in a respective of the two hydraulic chambers. In particular, a first moving element 325 is arranged in the first hydraulic chamber and is coupled to the outer positioning tube 333 in order to thus be able to drive the outer positioning tube 333 to move axially. A second mobile element 314 is arranged in the second hydraulic chamber, the second mobile element 314 is coupled to the inner tube 313 to be able to drive the inner tube 313 to move axially. The first moving element 325 divides an interior space of the first hydraulic chamber into a release cavity and a closure cavity (not indicated). Preferably, the distal end of the first hydraulic chamber is provided with a first distal sealing ring 332 (fixed to the outer tube assembly 33) and the proximal end of the first hydraulic chamber is provided with a first proximal sealing ring 336 (fixed to the set of outer tubes 33). More preferably, the first moving element 325 is provided with a sealing ring (not indicated). The second Movable element 314 divides an interior space of the second hydraulic chamber into a release cavity and a closing cavity (not indicated). Preferably, the second hydraulic chamber is provided distally with a second distal sealing ring 321, the second distal sealing ring 321 is optionally provided on the retaining tip 322 and the proximal end of the second hydraulic chamber has a second sealing ring. proximal 326. More preferably, the second moving element 314 is provided with a sealing ring (not indicated).

The third type delivery assembly 300 further includes a handle component 34 disposed at a proximal end of the catheter component. The handle component 34 generally includes a housing 342, the housing 342 defining a lumen configured for the passage of the inner tube assembly 31 and the outer tube assembly 33 therethrough. The handle component 34 further includes two pairs of conduit connectors. One pair of conduit connectors is movably disposed in housing 342, and the other pair of conduit connectors is fixedly disposed in housing 342. In this embodiment, a pair of conduit connectors includes a first connector. release conduit connector 334 and a first closure conduit connector 335, and the other pair of conduit connectors includes a second closure conduit connector 327 and a second release conduit connector 328. The first release conduit connector 334 and the first closure tube connector 335 are connected to the release and closure cavities of the first hydraulic chamber, respectively, and movable in the housing 342. The second closure tube connector 327 and the second release tube connector 328 They are connected to the closure and release cavities of the second hydraulic chamber, respectively, and secured to the housing 342. Preferably, the housing 342 defines guide channels 341 to guide the movement of the first release tube connector 334 and the first connector of closure tubes 335, thus making the movement more precise. All line connectors are connected to the respective medium supply lines 3.

In practical use, the two hydraulic chambers in the placement assembly of this embodiment provide two options for achieving release. That is, closure and distal release of the delivery assembly may be achieved by causing movement of the inner tube assembly relative to the intermediate tube assembly or by causing movement of the outer tube assembly relative to the intermediate tube assembly. This configuration can provide more flexibility and comfort of use, and is particularly useful in the release of a mitral or tricuspid valve prosthesis. Reference may be made to the above description of the first and second embodiments for further details of the operation of the placement assembly, and further description thereof is omitted here.

Furthermore, in order to be able to vary the operation between the hydraulic chambers, the drive assembly 2 may further include a switching control module to vary the operation between the hydraulic chambers. The switching control module is connected to both the hydraulic and positioning assembly and is configured to selectively connect the hydraulic assembly to one of the multiple hydraulic chambers to allow the hydraulic assembly to selectively supply a medium to the selected hydraulic chamber. Preferably, the number of hydraulic chambers is not limited to two, since more than two hydraulic chambers may be provided. Additionally, the multiple hydraulic chambers may share a single common motor assembly and a single common hydraulic assembly.

Preferably, the switching control module includes a diverter solenoid valve 6 to vary operation between channels for the respective hydraulic chambers. The diverter solenoid valve 6 includes multiple banks of valves and two connection ports. The two connection ports are connected to the hydraulic assembly, more precisely, to a first outlet and a second outlet, respectively. Multiple banks of valves are connected to the positioning assembly and each includes two valves. Each of the valve banks is configured to control the connection of a respective hydraulic chamber to the hydraulic assembly. When one of the two connection ports is put in communication with one of the multiple valve banks, one of the respective hydraulic chambers is connected to the hydraulic assembly. The handle component is arranged in multiple pairs of conduit connectors, each pair connected to the release and closure cavities of a respective of the hydraulic chambers. The multiple banks of valves are connected to the multiple pairs of conduit connectors through the media supply conduits.

It will be recognized that the switching control module of the present invention is not limited to including the diverter solenoid valve 6, and any other suitable switching element is also possible, without departing from the scope of the invention.

Referring to Figures 9a to 9b, in one implementation, the diverter solenoid valve 6 includes a housing 61. In the housing 61, a first diverter valve 62, a second diverter valve 63, a third diverter valve 64 and a fourth diverter valve are provided. 65, a first connection port 66 and a second connection port 67 are also provided in the housing 61. The first connection port 66 and the second connection port 67 are respectively connected to a pair of conduit interfaces 21 arranged in a control box. The four diverter valves are connected to the respective pipe connectors mentioned above through the respective medium supply pipes 3. With this arrangement, the connection of the first and second hydraulic chamber can be easily achieved with a single pair of conduit interfaces in the control box and a single diverter solenoid valve 6. This allows for an even simpler structure and proper control. To switch to another hydraulic chamber, an electrical control module can actuate a push rod 68 to align corresponding diverter valves with the corresponding channel. The push rod 68 may be provided with a sealing ring 69. In this embodiment, the first diverter valve 62, the third diverter valve 64, the fourth diverter valve 65 and the second diverter valve 63 are arranged sequentially from left to right. When the first connection port 66 is brought into communication with the first diverter valve 62 and the second connection port 67 with the second diverter valve 63, the first hydraulic chamber is activated, as shown in Figure 9a. When the first connection port 66 is brought into communication with the third diverter valve 64 and the second connection port 67 with the fourth diverter valve 66, the second hydraulic chamber is activated, as shown in Figure 9b.

EMBODIMENT 4

Referring to Figures 10a to 10b, in a fourth embodiment, a fourth type placement assembly 400 is provided, including a catheter component and a pressure component 43. The catheter component includes a set of inner tubes 41 and a set of outer tubes. 42. The set of outer tubes 42 is configured as a moving tube, and the set of inner tubes 41 is configured as a fixed tube. Alternatively, the set of outer tubes 42 is configured as a fixed tube, and the set of inner tubes 41 is configured as a moving tube. The outer tube assembly 42 is mounted on the inner tube assembly 41, and the outer tube assembly 42 and the inner tube assembly 41 are movable relative to each other.

The inner tube assembly 41 includes a conical tip 411, a distal inner tube 412, a retention tip 413, and a proximal inner tube 414. The proximal end of the conical tip 411 is attached to a distal end of the distal inner tube 412. , the proximal end of the distal inner tube 412 is attached to the retention tip 413. The proximal end of the retention tip 413 is attached to the proximal inner tube 414. The outer tube assembly 42 includes a sheath 421 and a tube outer positioning tube 422, which are sequentially coupled to each other along an axis of the set of outer tubes from a distal end to a proximal end thereof. The sleeve 421 may define, together with the conical tip 411, an enclosed space into which a medical implant is loaded. The sleeve 421 and the outer placement tube 422 may be integrally formed or independent.

The pressure component 43 is disposed at a proximal end of the placement assembly and includes a single hydraulic chamber 433 and a movable member 423. The fourth type placement assembly 400 further includes a handle component 44 disposed at a proximal end. of the catheter component. The handle component 44 includes a housing in which the hydraulic chamber 433 is disposed. The hydraulic chamber 433 does not extend within the catheter component, and the movable member 423 is disposed within the hydraulic chamber 433, the movable member 423 divides the hydraulic chamber 433 into a release cavity and a closure cavity, which are axially adjacent and sealed against each other. The movable member 423 is fixedly coupled to the outer positioning tube 422 so as to drive the set of outer tubes 42 to move axially relative to the set of inner tubes 41. In an alternative implementation, the movable member 423 is fixedly coupled to the proximal inner tube to be able to actuate the inner tube assembly 41 to move axially with respect to the outer tube assembly 42. Preferably, the distal end of the hydraulic chamber 433 is provided with a distal sealing ring 431 and the proximal end of the hydraulic chamber 433 is provided with a proximal sealing ring 432. More preferably, the moving element 423 is also provided with a sealing ring.

Similarly, the handle component 44 is provided with a pair of conduit connectors fixed therein, hereinafter respectively referred to as release conduit connector 434 and closure conduit connector 435. The release conduit connector 434 is connected to the release cavity of the hydraulic chamber 433, and the closure tube connector 435 is connected to the closure cavity of the hydraulic chamber 433.

Furthermore, considering that the housing of the handle component 44 is generally formed of a polymeric material and, therefore, can withstand only a limited pressure, the pressure element 43 may further include another housing (not indicated) disposed within of said housing of the handle component 44. In this case, the other housing can define the hydraulic chamber inside it and can be made of a biocompatible metallic material, which allows the hydraulic chamber 433 to withstand a higher pressure. This can further improve the placement performance of the delivery system and allows its use in a wider range of implant placement applications.

This embodiment differs from previous embodiments in that the hydraulic chamber is defined in the handle component that is proximal to the placement assembly. This can avoid safety issues that may arise from possible leakage of the media chamber after the catheter is inserted distally into a patient's body in the event that the hydraulic chamber is defined by a distal section of the catheter in the assembly. placement, thus improving the security of the system. The operation of the placement assembly of this embodiment is similar to that of any of the above embodiments and therefore need not be described in more detail here. Figure 10b shows the placement assembly in a release configuration, while Figure 10a shows the placement assembly in a closed configuration.

Furthermore, it will be appreciated that one or more hydraulic chambers 433 may be defined in accordance with the present embodiment. In the latter case, the number of hydraulic chambers is not limited to two, and there may be more than two hydraulic chambers. Each of the hydraulic chambers can be provided inside with a respective mobile element to drive the movement of a respective mobile tube. For example, each moving tube can be implemented as a set of inner or outer tubes. In the case of two hydraulic chambers, they can be used respectively to drive the movement of the inner and outer tube sets. In the case of two or more hydraulic chambers, their operation and arrangement of conduit connectors may be similar to those of the fourth embodiment and therefore need not be described in further detail here.

EMBODIMENT 5

In each of the above embodiments, another hydraulic chamber (not indicated) may be further defined for bending control in the handle component. This hydraulic chamber for flexure control can also be divided by a moving element into a release cavity and a closing cavity. To distinguish the hydraulic chamber for bending control from any hydraulic chamber for driving a respective movable tube, the former is referred to herein as the bending control chamber.

Referring to Figure 11a, together with Figure 1, the placement assembly 1 may further include a flexion control component configured to control distal flexion of the placement assembly 1. The flexion control component includes a mechanism bending control chamber and the bending control chamber mentioned above. The bending control mechanism is configured to control the bending of the catheter component, and the bending control chamber hydraulically drives the movement of the bending control mechanism, thereby regulating the bending curvature of the catheter component. Specifically, the motor assembly may be configured to drive the hydraulic assembly to supply the medium to the bending control chamber. It will be appreciated that the hydraulic chambers for respectively driving the moving tube(s) and the bending control mechanism may share a single common motor assembly and a single common hydraulic assembly. This can further simplify the structure of the placement system and make it easier to operate. Furthermore, compared to electrical or manual bending control of the catheter component, simpler and more comfortable operation is made possible, further reducing the time required for any surgical procedure using the system. Furthermore, it becomes possible for the handle to have a reduced volume and accommodate heavier loads and can therefore be used in a wider range of applications.

Additionally, the bending control mechanism may include a wire 51, a wire attachment member 52, and a bar 55. The distal end of the wire 51 is tied to the distal end of the catheter component, e.g., the inner tube assembly. or exterior. Furthermore, the proximal end of the wire 51 is attached to a distal end of the wire joining member 52. The proximal end of the wire joining member 52 is attached to the bar 55, the bar 55 extending through the chamber of flexion control (not indicated). The bar 55 can move axially back and forth to push or pull the wire 51, achieving the bending control mentioned above. That is, under the control of the bending control chamber the wire 51 can be tightened or loosened to effect bending control on the distal end of the placement assembly 1. Referring to Figure 11b, the catheter component in the placement assembly can bend distally under the action of a tensile force applied by the cable 51 to it. Compared to other flex control designs, this one features a simpler structure and allows for more adequate control.

Additionally, a pair of conduit connectors may be provided in the housing of the handle component, for example, conduit connectors 53 and 54 configured to respectively connect to the release and closure cavities of the bending control chamber. Preferably, the bending control chamber can have sealing rings distally and proximally. More preferably, the movable member in the bending control chamber also has a sealing ring.

In summary, the delivery system of the present invention can be used appropriately with various medical implants. In particular, if multiple hydraulic chambers are defined in the placement assembly, the operation between them can be varied using the switching control module. This allows all hydraulic chambers to be controlled with a single drive assembly, simplifying the structure of the drive part and making the delivery system of the present invention suitable for use in a wider range of applications. In the event that the placement system includes multiple hydraulic chambers, the diverter solenoid valve can be used to vary operation between different channels for the respective hydraulic chambers, further simplifying the structure, facilitating control and allowing for more convenient operation. Overall, the placement system of the present invention has a robust structure, high power transmission efficiency and great ease of use. Additionally, actuators of various specifications can be used, resulting in cost reduction in any surgical procedure using the delivery system.

Furthermore, it will be recognized that, although some preferred embodiments of the present invention have been described above, the present invention is in no way limited to the above embodiments. For example, the present invention is not limited to any particular solution that uses the engine to drive the movement of the piston, as long as the piston can be driven by the power output of the engine to move forward and backward.

The embodiments that have been explained here have been described progressively, with the description of each embodiment focusing on its differences from the others. Reference may be made between the embodiments by their common or similar characteristics. The description presented above is simply that of some preferred embodiments of the present invention and does not limit the scope thereof in any way. Each and every one of the changes and modifications made by experts in the field based on the previous teachings are within the scope defined in the attached claims.

Claims (15)

1. Medical implant placement system, comprising a placement assembly (1) and a drive assembly (2), which are connected to each other, the drive assembly (2) comprising a motor assembly and a hydraulic assembly, which They are connected to each other, the placement assembly (1) comprising a catheter component and a pressure component, the catheter component comprising a fixed tube and a mobile tube, the mobile tube capable of moving relative to the fixed tube, the pressure component comprising a hydraulic chamber and a mobile element (114), the mobile element (114) movably arranged in the hydraulic chamber, the mobile element (114) connected to the mobile tube, the motor assembly configured to drive the assembly hydraulic to supply a medium to the hydraulic chamber, thus causing the movable element (114) and the movable tube to move relative to the fixed tube. 2. Medical implant placement system according to claim 1, wherein the movable element (114) divides the hydraulic chamber into a release cavity (116) and a closure cavity (117), which are arranged axially, when the hydraulic assembly supplies the medium to the release cavity (116), the movable element (114) and the movable tube move in a first direction with respect to the fixed tube, and When the hydraulic assembly supplies the medium to the closure cavity, the mobile element (114) and the mobile tube move in a second direction with respect to the fixed tube, the first direction being opposite to the second direction. 3. Medical implant placement system according to claim 1 or 2, wherein the catheter component comprises a set of outer tubes and a set of inner tubes, the set of outer tubes being arranged on the set of inner tubes so that can move with each other, wherein one of the set of outer tubes and the set of inner tubes is configured as a fixed tube and the other as a movable tube, or wherein each of the set of outer tubes and the set of inner tubes can alternately act as a tube fixed and act as a mobile tube. 4. Medical implant placement system according to claim 3, wherein, in case one of the set of outer tubes and the set of inner tubes is configured as a fixed tube and the other as a mobile tube, there is a hydraulic chamber, a movable element (114) is arranged in the hydraulic chamber, and the movable element (114) is configured to drive the movement of the set of outer tubes or the set of inner tubes, and In case each of the set of outer tubes and the set of inner tubes can alternate between acting as a fixed tube and acting as a mobile tube, there are two hydraulic chambers, a mobile element (114) is arranged in a respective one of the chambers. hydraulics, the mobile element (114) of one of the hydraulic chambers is configured to activate the movement of the set of outer tubes, and the mobile element (114) of the other of the hydraulic chambers is configured to activate the movement of the set of tubes interiors; optionally in which: if there is a hydraulic chamber, and if the inner tube set is configured as a moving tube, The set of inner tubes comprises a conical tip (111), a sheath (112) and an inner tube (115), the conical tip (111) fixedly connected to both the sheath (112) and the inner tube (115). , and the set of outer tubes comprises a retaining tip (122), a connecting tube (123) and an outer tube (124) that are sequentially connected to each other along an axis of the set of outer tubes from a distal end to a proximal end thereof, the movable element (114) fixedly connected to the inner tube (115), the inner tube (115) inserted movably sequentially through the retaining tip (122), the connecting tube (123) and the outer tube (124), or if there is a hydraulic chamber, and if the outer tube set is configured as a moving tube, The set of outer tubes comprises a sheath (221) and an outer placement tube (222), which are connected to each other, and the set of inner tubes comprises a conical tip (211), a distal inner tube (212), a retaining tip (213) and a proximal inner tube (215), a proximal end of the conical tip (211) connected to a distal end of the distal inner tube (212), a proximal end of the distal inner tube (212) connected to the retention tip (213), the retention tip (213) fixedly arranged at a distal end of the proximal inner tube (215), the outer positioning tube connected to the movable element (225). 5. Medical implant delivery system according to claim 3, wherein the delivery assembly further comprises a handle component (34) disposed at a proximal end of the catheter component, wherein, when the set of outer tubes (33) is configured as a mobile tube, the hydraulic chamber comprises a first hydraulic chamber configured to receive the medium and, therefore, drive the movement of the set of outer tubes (33), the first hydraulic chamber connected to a pair of conduit connectors (334, 335), the pair of conduit connectors (334, 335) movably arranged on the handle component (34), the handle component (34) provided of guide channels (341), the pair of conduit connectors (334, 335) configured to move in the guide channels (341). 6. Medical implant placement system according to claim 1 or 2, wherein the drive assembly (2) further comprises a control box, both the motor assembly and the hydraulic assembly are housed in the control box, the control box being provided with a pair of conduit interfaces (21), the pair of conduit interfaces (21) connected to the hydraulic assembly, the pair of conduit interfaces (21) connected to the hydraulic chamber through conduits medium supply (3), The control box is further provided with a man-machine interface (23), the man-machine interface (23) configured for the input of information containing at least one of a speed of movement and distance of the moving tube and a pressure of the medium. 7. Medical implant placement system according to claim 1 or 2, wherein one or more mobile tubes are arranged, in which, if a mobile tube is provided, a hydraulic chamber is also provided, a mobile element (114) is arranged in the hydraulic chamber to be able to drive the movement of the mobile tube, or in which, if a plurality of mobile tubes is provided, a plurality of hydraulic chambers is also provided, a mobile element is arranged in each of the plurality of hydraulic chambers to be able to actuate the movement of a respective one of the mobile tubes, and the hydraulic assembly is configured to selectively supply the medium to one of the plurality of hydraulic chambers. 8. Medical implant placement system according to claim 1 or 2, wherein there are a plurality of hydraulic chambers, a motor assembly and a hydraulic assembly, wherein the drive assembly (2) further includes a module of switching control connected to both the hydraulic assembly and the positioning assembly (1), the switching control module being configured to selectively connect the hydraulic assembly to one of the plurality of hydraulic chambers, thereby allowing the hydraulic assembly to selectively supply the medium to one of the plurality of hydraulic chambers. 9. Medical implant placement system according to claim 8, wherein the switching control module comprises a diverter solenoid valve (6), the diverter solenoid valve (6) comprising a plurality of valve banks and two connection ports (66). , 67), the two connection ports (66, 67) connected to the hydraulic assembly, the plurality of valve banks connected to the placement assembly (1), each of the valve banks comprising two valves, each of the banks of valves configured to control the connection of a respective of the hydraulic chambers to the hydraulic assembly in which, when the two connection ports (66, 67) are placed in communication with one of the plurality of valve banks, a respective of the chambers hydraulics connects to the hydraulic assembly. 10. Medical implant placement system according to claim 8, wherein there are two hydraulic chambers, which are respectively a first hydraulic chamber and a second hydraulic chamber, wherein the catheter component comprises a set of outer tubes (33), an intermediate tube (324) and a set of inner tubes (31), the set of outer tubes (33) being arranged on the set of inner tubes ( 31) and the intermediate tube (324), both the set of outer tubes (33) and the set of inner tubes (31) being able to move with respect to the intermediate tube (324), the intermediate tube (324) arranged in an outer tube of placement (333) and located between the outer placement tube (333) and an inner tube (313), one of the set of outer tubes (33) and the set of inner tubes (31) selectively configured as a mobile tube, the set comprising of outer tubes (33) a proximal sheath (331) and the outer placement tube (333), a distal end of the outer placement tube (333) fixedly connected to a proximal end of the proximal sheath (331), comprising the set of inner tubes (31), a conical tip (311), a distal sleeve (312) and the inner tube (313), a distal end of the inner tube (331) connected to the conical tip (311), a distal end of the inner tube (331) connected to the conical tip (311), a distal end of the distal sheath (312) fixedly connected to a proximal end of the conical tip (311), and in which the second hydraulic chamber is provided inside with a second mobile element (314), the second mobile element (314) is connected to the inner tube (313) to be able to activate the movement of the inner tube (313), and the The first hydraulic chamber is provided with a first mobile element (325), the first mobile element (325) is connected to the outer placement tube (333) in order to drive the movement of the outer placement tube (333). 11. Medical implant placement system according to claim 1 or 2, wherein a proximal end of the hydraulic chamber (433) is provided with a first sealing ring (432) and a distal end of the hydraulic chamber (433) is provided with a first sealing ring (432) It is provided with a second sealing ring (431), and the moving element (423) is provided with a third sealing ring. 12. Medical implant placement system according to claim 1 or 2, wherein the placement assembly (1) further comprises a bending control component, the bending control component comprising a bending control chamber and a bending control mechanism, the bending control mechanism configured to control bending of the catheter component, the bending control chamber configured to hydraulically actuate the bending control mechanism to move thereby regulating the bending state of the catheter component. 13. Medical implant placement system according to claim 1 or 2, wherein the placement system further comprises a control assembly (4) communicatively connected to the motor assembly, wherein the motor assembly is configured to drive the hydraulic assembly to supply the medium to the hydraulic chamber under the control of the control assembly (4), and the control assembly (4) is arranged independently of both the placement assembly (1) and the drive assembly (2 ); optionally wherein the control assembly (4) comprises a control button (402) and a communication interface (401), the communication interface (401) configured for wired or wireless communication with the motor assembly, the control button control (402) configured to produce a control signal, wherein the motor assembly is configured to drive, under the control of the control signal, the hydraulic assembly to selectively supply the medium to one of the release cavity and the cavity closure in the hydraulic chamber. 14. Medical implant placement system according to claim 1 or 2, wherein the drive assembly (2) is arranged independently of the placement assembly (1). 15. Medical implant delivery system according to claim 1 or 2, wherein the hydraulic chamber is defined in the catheter component to extend towards a distal end of the catheter component along an axis of the catheter component, or The hydraulic chamber is defined in the handle component, wherein the handle component is disposed at a proximal end of the catheter component.