CN116942365A - Conveying device and conveying system - Google Patents

Abstract

The invention provides a conveying device and a conveying system, wherein the conveying device comprises a stabilizing component and a handle; the stabilizing component is provided with a cavity channel which is penetrated along the axial direction of the handle and is used for the movable penetrating of the catheter; the stabilizing assembly has a locked state and an unlocked state; when the stabilizing assembly is in the locked state, axial movement of the stabilizing assembly relative to the handle is locked; the stabilizing assembly is axially movable relative to the handle when the stabilizing assembly is in the unlocked state. So configured, the stabilizing assembly can be locked or unlocked relative to the handle, and when the stabilizing assembly is unlocked from the handle, the axial position of the stabilizing assembly can be finely adjusted, and then after being adjusted to a proper position, the stabilizing assembly is locked with the handle. Thereby, the positioning accuracy of valve release and recovery is improved.

Description

Conveying device and conveying system

Technical Field

The invention relates to the technical field of medical equipment, in particular to a conveying device and a conveying system.

Background

Delivery systems used in interventional procedures are generally divided into two parts: a catheter and a handle. The handle is used as a power source of the whole interventional therapy, and enough safety and effectiveness are required to be ensured. With the deep research of disease pathogenesis and lesion type, the functional requirements of the delivery system, such as release precision, recovery precision, simple operation and the like, are gradually improved. However, the catheter operation positioning accuracy of the existing conveying system is common, and most of the conveying systems have single functions and can only be used as an interventional channel.

Disclosure of Invention

The invention aims to provide a conveying device and a conveying system, which are used for solving the problem of low accuracy of a conduit of the conventional conveying system.

In order to solve the above technical problems, the present invention provides a conveying device, which includes: a stabilizing assembly and a handle;

the stabilizing component is provided with a cavity channel which is penetrated along the axial direction of the stabilizing component, and the cavity channel is used for the movable penetrating of the catheter; the stabilizing assembly has a locked state and an unlocked state;

when the stabilizing assembly is in the locked state, axial movement of the stabilizing assembly relative to the handle is locked;

the stabilizing assembly is axially movable relative to the handle when the stabilizing assembly is in the unlocked state.

Optionally, the delivery device further comprises a switching assembly comprising a driving member for moving relative to the handle to switch the state of the stabilizing assembly.

Optionally, in the conveying device, the switching assembly includes a first locking element, and the first locking element is connected with the stabilizing assembly; the handle comprises a second locking element matched with the first locking element; when the driving piece moves relative to the handle, the first locking piece is driven to move relative to the second locking piece, so that the first locking piece and the second locking piece are locked or unlocked.

Optionally, in the delivery device, the channel of the stabilizing assembly extends along an axial direction of the handle, and the first locking element and the second locking element have locking teeth oppositely arranged along a radial direction of the handle; the driving piece is used for moving along the radial direction of the handle so as to drive the first locking piece to move relative to the second locking piece; wherein when the locking teeth of the first locking element and the locking teeth of the second locking element are separated from each other, the first locking element and the second locking element are unlocked; the first locking element and the second locking element are locked when the locking teeth of the first locking element and the locking teeth of the second locking element are engaged with each other.

Optionally, in the conveying device, the first locking element and the second locking element respectively have a plurality of locking teeth, and the plurality of locking teeth are arranged along the axial direction of the handle.

Optionally, the conveying device further comprises a potential energy component; the potential energy assembly stores potential energy when the driving piece drives the first locking piece to move away from the second locking piece; the potential energy assembly is also for releasing potential energy to drive the first locking element toward the second locking element.

Optionally, in the conveying device, the potential energy assembly includes an elastic member, and one end of the elastic member is connected with the first locking member; the other end of the elastic piece is used for being connected with the handle.

Optionally, in the conveying device, the switching assembly further includes a guide post movably connected with the first locking element in a radial direction of the handle to guide the first locking element to move in the radial direction of the handle.

Optionally, in the conveying device, the first locking element includes a guide cavity extending in a radial direction of the handle, a cross-sectional shape of the guide cavity is adapted to an outer contour shape of the guide post, and the guide post is movably disposed in the guide cavity in the radial direction of the handle.

Optionally, the conveying device further comprises a protective sleeve, and the protective sleeve is sleeved outside the stabilizing component; the handle has a mating position for securing the protective sheath, and the stabilizing assembly is movable back and forth within the protective sheath.

Optionally, in the conveying device, the stabilizing component includes a stabilizing tube and a stabilizing tube fixing seat, and the stabilizing tube fixing seat is disposed at a proximal end of the stabilizing tube and is fixedly connected with the stabilizing tube; the stabilizer tube fixing seat is also fixedly connected with the first locking piece; the protective sleeve is provided with a containing cavity which is open towards the proximal end, the cross section shape of the containing cavity is matched with the outline shape of the stabilizer tube fixing seat, and the stabilizer tube fixing seat is movably arranged in the containing cavity in a penetrating mode along the axial direction of the handle.

Optionally, the conveying device further comprises a sliding component; the stabilizing component is connected with the handle through the sliding component; the sliding component is used for guiding the movement direction of the stabilizing component relative to the handle when in the unlocking state.

Optionally, in the conveying device, the sliding component comprises a guide rail extending along the axial direction of the handle and a sliding block matched with the guide rail, the guide rail is connected with the handle, and the sliding block is movably arranged on the guide rail along the axial direction of the handle; the slide block is used for being connected with the stabilizing component.

Optionally, in the delivery device, the stabilizing assembly is detachably connected to the handle; and when the stabilizing component is in the locking state, the stabilizing component is assembled and connected with the handle. And when the stabilizing component is in the unlocking state, the stabilizing component is detached from the handle and disconnected.

In order to solve the above technical problem, the present invention further provides a conveying system, which includes: a catheter and a delivery device as described above; the catheter is movably arranged in the cavity of the stabilizing component along the axial direction in a penetrating way.

In summary, in the conveying device and the conveying system provided by the invention, the conveying device comprises a stabilizing component and a handle; the stabilizing component is provided with a cavity channel which is penetrated along the axial direction of the handle and is used for the movable penetrating of the catheter; the stabilizing assembly has a locked state and an unlocked state; when the stabilizing assembly is in the locked state, axial movement of the stabilizing assembly relative to the handle is locked; the stabilizing assembly is axially movable relative to the handle when the stabilizing assembly is in the unlocked state.

So configured, the stabilizing assembly can be locked or unlocked relative to the handle, and when the stabilizing assembly is unlocked from the handle, the axial position of the stabilizing assembly can be finely adjusted, and then after being adjusted to a proper position, the stabilizing assembly is locked with the handle. Thereby, the positioning accuracy of valve release and recovery is improved. Furthermore, the axial position of the stabilizing component relative to the handle in the unlocking state is adjustable, and the stabilizing component can be used as an inline catheter sheath in some application scenes, so that multiple use functions are realized. The whole conveying device has simple operation logic and convenient use.

Drawings

Those of ordinary skill in the art will appreciate that the figures are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention. Wherein:

FIG. 1 is a schematic view of a conveyor apparatus according to an embodiment of the invention;

FIG. 2 is an internal schematic view of a delivery device according to an embodiment of the present invention;

FIG. 3 is a schematic view in axial cross-section of a delivery device according to an embodiment of the present invention, with the stabilizing assembly in a locked state;

FIG. 4 is a side view of a delivery device according to an embodiment of the present invention with the stabilizing assembly in an unlocked state;

fig. 5 is a schematic view in axial cross-section of a delivery device according to an embodiment of the invention, with the stabilizing assembly in an unlocked state.

In the accompanying drawings:

1-a stabilizing assembly; 11-a stabilizing tube; 12-a stabilizer tube holder; 13-a stabilization tube drain; 2-a handle; 20-a housing; 21-a second locking element; 22-chimeric position; 23-positioning grooves; 3-a catheter; 31-an outer tube; 32-an inner tube; 51-a driving member; 52-first locking element; 53-locking teeth; 54-guide posts; 55-guiding cavity; 56-positioning piece; 61-an elastic member; 7-a slip assembly; 71-a guide rail; 72-sliding blocks; 8-protecting sleeve; 81-a receiving chamber; 91-a knob; 92-motor.

Detailed Description

The invention will be described in further detail with reference to the drawings and the specific embodiments thereof in order to make the objects, advantages and features of the invention more apparent. It should be noted that the drawings are in a very simplified form and are not drawn to scale, merely for convenience and clarity in aiding in the description of embodiments of the invention. Furthermore, the structures shown in the drawings are often part of actual structures. In particular, the drawings are shown with different emphasis instead being placed upon illustrating the various embodiments.

As used in this disclosure, the singular forms "a," "an," and "the" include plural referents, the term "or" are generally used in the sense of comprising "and/or" and the term "several" are generally used in the sense of comprising "at least one," the term "at least two" are generally used in the sense of comprising "two or more," and the term "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance or number of features indicated. Thus, a feature defining "first," "second," "third," or the like, may explicitly or implicitly include one or at least two such features, with "one end" and "another end" and "proximal end" and "distal end" generally referring to the corresponding two portions, including not only the endpoints. The terms "proximal" and "distal" are defined herein with respect to a delivery system having one end for intervention in the body (i.e., a catheter) and a manipulation end outside the residence body (i.e., a delivery device). The term "proximal" refers to the location of the element closer to the manipulation end of the delivery system where it resides outside the body, and the term "distal" refers to the location of the element closer to the end of the delivery system where it is introduced into the body and further from the manipulation end of the delivery system. Alternatively, in a manual or hand-operated application scenario, the terms "proximal" and "distal" are defined herein with respect to an operator, such as a surgeon or clinician. The term "proximal" refers to a location of an element closer to the operator, and the term "distal" refers to a location of an element closer to the delivery system and further from the operator. Furthermore, as used in this disclosure, "mounted," "connected," and "disposed" with respect to another element should be construed broadly to mean generally only that there is a connection, coupling, mating or transmitting relationship between the two elements, and that there may be a direct connection, coupling, mating or transmitting relationship between the two elements or indirectly through intervening elements, and that no spatial relationship between the two elements is to be understood or implied, i.e., that an element may be in any orientation, such as internal, external, above, below, or to one side, of the other element unless the context clearly dictates otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, directional terms, such as above, below, upper, lower, upward, downward, left, right, etc., are used with respect to the exemplary embodiments as they are shown in the drawings, upward or upward toward the top of the corresponding drawing, downward or downward toward the bottom of the corresponding drawing.

One application scenario of the delivery system is for delivering a prosthetic valve prosthesis to an implantation site (e.g., at a native annulus) of a patient's heart. The delivery system includes a catheter into which the prosthetic valve prosthesis can be loaded and advanced and retracted.

The inventor finds that during the intervention of the artificial valve prosthesis into the heart, the positions of the developing ring and the heart valve ring of the conveying system are usually captured according to DSA developing images, and then the conveying system is dragged or pushed to drive the catheter to move forwards and backwards, so that a proper prosthesis release position is found, but the conveying system has a long length when the catheter passes through a human body, so that the displacement precision of the dragging or pushing mode of the whole conveying system is low, and the artificial valve prosthesis needs to be recovered or re-released after being adjusted or released for a plurality of times.

Based on this, referring to fig. 1 and 2, an embodiment of the present invention provides a conveying apparatus, which includes: a stabilizing assembly 1 and a handle 2; the stabilizing component 1 is provided with a cavity channel which is penetrated along the axial direction of the stabilizing component and is used for the movable penetration of the catheter 3; the stabilizing assembly 1 has a locked state and an unlocked state; when the stabilizing assembly 1 is in the locked state, axial movement of the stabilizing assembly 1 relative to the handle 2 is locked; the stabilizing assembly 1 is axially movable relative to the handle 2 when the stabilizing assembly 1 is in the unlocked state. Further, the embodiment of the invention also provides a conveying system, which comprises a guide pipe 3 and the conveying device; the catheter 3 is movably arranged in the cavity of the stabilizing assembly 1 along the axial direction. Preferably, the lumen of the stabilizing assembly 1 is hermetically connected to the catheter 3. More preferably, the stabilizing assembly 1 further comprises a stabilizing tube evacuation tube 13 for evacuating air between the lumen of the stabilizing assembly 1 and the catheter 3, ensuring that the distal end of the stabilizing assembly 1 does not enter the blood vessel after intervention. The handle 2 is disposed in the axial direction along the extending direction of the catheter 3, and in the example shown in fig. 1 and 2, the direction from the lower left to the upper right is specifically defined. The radial direction of the handle 2 is perpendicular to the axial direction of the handle 2.

In one example, the catheter 3 includes an outer tube 31 and an inner tube 32, and the inner tube 32 is disposed through the outer tube 31. Preferably, the axial position of the inner tube 32 relative to the handle 2 is fixed, i.e. the handle 2 will move with the inner tube 32 when it moves axially. While the axial position of the outer tube 31 relative to the handle 2 is movable. The prosthetic valve prosthesis may then be positioned between the inner tube 32 and the outer tube 31. When the inner tube 32 and the outer tube 31 advance and retreat in the axial direction, the inner tube can advance and retreat along the blood vessel of the patient together with the prosthetic valve prosthesis. After being moved substantially to the implantation site, the outer tube 31 is withdrawn proximally relative to the handle 2 while holding the inner tube 32 stationary, exposing (or partially exposing) the prosthetic valve prosthesis, the stent of the prosthetic valve prosthesis optionally being self-expanding to expand to conform to the native annulus of the implantation site, completing the implantation. The recovery process is the opposite and will not be described here. It will be appreciated that the principle of the overall delivery system is to load, release or retrieve the prosthetic valve prosthesis by the displacement differential created by the handle 2 driving the catheter 3 back and forth. It should be understood that the above-described exemplary embodiment is only one example of the catheter 3 and is not a limitation of the structure of the catheter 3, and the delivery device of the present embodiment may also be applied to catheters of other structures, such as catheters in which the outer tube is relatively fixed and the inner tube is relatively movable, etc., and the present invention is not limited thereto.

Referring to fig. 2 in combination with fig. 3, the stabilizer assembly 1 optionally includes a stabilizer tube 11, and the stabilizer tube 11 is preferably a tube segment with a short axial length, which is wrapped around the outer tube 31, but does not completely cover the outer tube 31. Preferably, the distal end of the stabilizer tube 11 is insertable into the blood vessel from the opening of the blood vessel, and the outer tube 31 extends from the distal end of the stabilizer tube 11 and into the blood vessel. The stabilizer tube 11 may be passed through an outer tube 31, an inner tube 32, etc. for providing a stable channel for the intervention of the prosthetic valve prosthesis. The stabilizer assembly 1 may be configured in said unlocked state when the intervention procedure is looking for a suitable prosthesis release position, wherein the stabilizer assembly 1 is capable of axial movement relative to the handle 2, i.e. the relative axial positions of the two are decoupled, and wherein the stabilizer assembly 1 may be used as a fixed reference when adjusting the position of the distal prosthetic valve prosthesis, wherein an operator may grasp the stabilizer tube 11 and drag or push the handle 2, bringing the outer tube 31, the inner tube 32 and the prosthetic valve prosthesis loaded therewith into relative advancing and retracting movements.

When the prosthetic valve prosthesis reaches a proper prosthesis release position, the stabilizing assembly 1 can be configured to be in the locking state, so that the stabilizing assembly 1 is locked relative to the handle 2, a certain stability is improved for the prosthesis release process of the advancing and retreating movement of the catheter 3 in the subsequent operation, and the outer tube 31 and the inner tube 32 after the release are conveniently withdrawn from the body.

Referring to fig. 2 in combination with fig. 3, preferably, the conveying device further includes a switching assembly, the switching assembly includes a driving member 51, and the driving member 51 is configured to move relative to the handle 2 to switch the state of the stabilizing assembly 1. It is understood that switching the state of the stabilizing assembly 1 here means that the stabilizing assembly 1 is switched between a locked state and an unlocked state. For simplicity of construction, the driving member 51 of the switching assembly may mechanically move to switch the state of the stabilizing assembly 1. Of course, in other embodiments, the switching component may also be electrically driven to switch the state of the stabilizing component 1, for example, the switching component includes an electrical switch, which switches the state of the stabilizing component 1 when turned on through an element such as an electromagnet, and those skilled in the art may configure the switching component according to the prior art, which is not described herein, and the present invention is not limited thereto.

Referring to fig. 3 to 5, optionally, the switching assembly includes a first locking member 52, and the first locking member 52 is connected to the stabilizing assembly 1; the handle 2 comprises a second locking element 21 adapted to the first locking element 52; when the driving member 51 moves relative to the handle 2, the first locking member 52 is driven to move relative to the second locking member 21, so that the first locking member 52 and the second locking member 21 are locked or unlocked. The first locking element 52 and the second locking element 21 may take a variety of different configurations. For example, snaps, magnetic catches, latches, hoops, etc., may be employed, as the present invention is not limited in this regard and those skilled in the art will understand and configure the present invention in light of the prior art. A closure comprising a closure tooth arrangement is described below in connection with fig. 3.

In an alternative example, the channel of the stabilizing assembly 1 extends in the axial direction of the handle 2, the first locking element 52 and the second locking element 21 having locking teeth 53 arranged opposite in the radial direction of the handle 2; the driving member 51 is configured to move in a radial direction of the handle 2 to drive the first locking member 52 to move relative to the second locking member 21; wherein the first locking element 52 and the second locking element 21 are unlocked when the locking teeth 53 of the first locking element 52 and the locking teeth 53 of the second locking element 21 are separated from each other; the first locking element 52 and the second locking element 21 are locked when the locking teeth 53 of the first locking element 52 and the locking teeth 53 of the second locking element 21 are engaged with each other. Alternatively, the handle 2 comprises a housing 20 and the driving member 51 comprises a key penetrating a key provided on the housing 20, the driving member 51 being in abutting connection with the first locking member 52. When the operator presses a button of the driving member 51 (refer to the movement of the driving member 51 downward in fig. 3), the first locking member 52 can be driven to move together with the stabilizing assembly 1 (move downward in fig. 3). The second locking element 21 is fixedly connected to the housing 20 such that the first locking element 52 is relatively far from the second locking element 21 such that the locking teeth 53 of the first locking element 52 and the locking teeth 53 of the second locking element 21 are separated from each other, as shown in fig. 4. The stabilizing assembly 1 is now no longer constrained by the second locking element 21 but is able to move in the axial direction of the handle 2. It will be appreciated that the abutting connection of the driving member 51 and the first locking member 52 only limits the radial displacement of the driving member 51 and the first locking member 52, but does not limit the axial displacement of the driving member and the first locking member 52, when the stabilizing assembly 1 moves axially, the driving member 52 is driven to move axially together, and the axial position of the driving member 51 is kept unchanged.

Optionally, the driving member 51 includes a positioning member 56, where the positioning member 56 extends along the radial direction of the handle 2, and is adapted to have a positioning slot 23 on the housing 20 of the handle 2, where the positioning member 56 is adapted to fit; the shape of the positioning groove 23 is matched with the outline shape of the positioning piece 56, and the positioning piece 56 can be clamped into the positioning groove 23. Preferably, the driving member 51 comprises two positioning members 56 arranged at intervals along the axial direction of the handle 2, and the housing 20 is provided with two positioning grooves 23. The positioning member 56 and the positioning groove 23 are provided to position the driving member 51, thereby preventing the driving member 51 from being displaced radially outward.

Optionally, the first locking element 52 and the second locking element 21 each have a plurality of locking teeth 53, the plurality of locking teeth 53 being arranged along the axial direction of the handle 2. It will be appreciated that, due to the interconnection of the first locking element 52 with the stabilizing assembly 1, upon axial movement of the stabilizing assembly 1 relative to the handle 2, the first locking element 52 will also move axially, such that axial displacement between the first locking element 52 and the second locking element 21 will occur, which is not fully aligned. While the plurality of locking teeth 53 are arranged to accommodate axial misalignment of the first locking member 52 and the second locking member 21 resulting from axial movement of the stabilizing assembly 1. Preferably, the plurality of locking teeth 53 are arranged at equal intervals, and more preferably, the plurality of locking teeth 53 are arranged continuously to form a tooth bar shape.

Preferably, the delivery device further comprises a potential energy assembly; the potential energy assembly stores potential energy as the driving member 51 drives the first locking member 52 away from the second locking member 21; the potential energy assembly is also used to release potential energy to drive the first locking member 52 toward the second locking member 21. In one example, the potential energy assembly includes an elastic member 61, and one end of the elastic member 61 is connected to the first locking member 51; the other end of the elastic member 61 is adapted to be connected to the handle 2. The other end of the elastic member 61 is connected to the handle 2, either directly or indirectly, for example, the other end of the elastic member 61 is connected to the housing 20 via a slider assembly 7 (described in detail below). The elastic member 61 may be, for example, a spring or a spring plate, and in other embodiments, the potential energy assembly may further include magnets with the same poles opposite to each other, which may also achieve the effect of storing and releasing potential energy similar to that of the elastic member 61, which will be understood by those skilled in the art, and the description of this embodiment is omitted.

Optionally, the switching assembly further comprises a guiding post 54, the guiding post 54 being movably connected with the first locking element 51 in the radial direction of the handle 2 for guiding the first locking element 51 to move in the radial direction of the handle 2. In one exemplary embodiment, the first locking element 51 comprises a guide cavity 55 extending in the radial direction of the handle 2, the cross-sectional shape of the guide cavity 55 being adapted to the outer contour shape of the guide post 54, the guide post 54 being arranged in the guide cavity 55 in a movable manner in the radial direction of the handle 2. Preferably, the switching assembly includes more than two guide posts 54 spaced along the axial direction of the handle 2, and the corresponding first locking member 51 includes more than two guide cavities 55 spaced along the axial direction of the handle 2, where the guide posts 54 are disposed in one-to-one correspondence with the guide cavities 55. More than two guide posts 54 and guide cavities 55 enable smoother radial movement of the first locking member 51. In other embodiments, the guiding structure is not limited to the combination of the guiding post 54 and the guiding cavity 55, but may be a guiding rail or a sliding groove, etc., which will be understood by those skilled in the art, and the present embodiment will not be described.

In an alternative example, the end of the guide post 54 remote from the guide cavity 55 has an enlarged portion, and the resilient member 61, which may be a spring, for example, may be disposed over the body portion of the guide post 54. One end of the spring is in abutting connection with the first locking element 51 and the other end of the spring is in abutting connection with the enlarged portion of the guide post 54. Preferably, the potential energy assembly comprises more than two springs, and the number of the springs is arranged in one-to-one correspondence with the guide posts 54.

The conveyor further comprises a slip assembly 7; the stabilizing component 1 is connected with the handle 2 through the sliding component 7; the sliding component 7 is used for guiding the movement direction of the stabilizing component 1 relative to the handle 2 when in the unlocking state. The sliding component 7 can guide the movement direction of the stabilizing component 1 along the axial direction of the handle 2, so as to avoid the undesirable offset of the stabilizing component 1. While also reducing the resistance to axial movement of the stabilizing assembly 1 relative to the housing 20.

Optionally, the sliding assembly 7 includes a guide rail 71 extending along an axial direction of the handle 2 and a sliding block 72 matched with the guide rail 71, the guide rail 71 is connected with the handle 2, for example, is fixedly connected with the housing 20, and the sliding block 72 is movably arranged on the guide rail 71 along the axial direction of the handle 2; the slider 72 is adapted to be connected to the stabilizing assembly 1. The slider 72 may be directly or indirectly connected to the stabilizing assembly 1. In an indirect connection example, the slider 72 can be connected indirectly to the stabilizing assembly 1, for example, via the guide post 54 and the first locking element 51.

Further, the conveying device further comprises a protective sleeve 8, and the protective sleeve 8 is sleeved outside the stabilizing component 1; the housing 20 of the handle 2 has a fitting position 22 for the protective sheath 8 to pass through, and the stabilizer tube 11 can move back and forth in the protective sheath 8 to accommodate axial movement of the stabilizer assembly 1 driven by the driver 51. In one example, the engaging position 22 may be a through hole formed in the housing 20 along the axial direction of the handle 2, and the protective sleeve 8 has a stepped surface recessed in the radial direction, and the inner contour of the engaging position 22 may be adapted to the outer contour of the stepped surface of the protective sleeve 8, so that the protective sleeve 8 can be engaged in the engaging position 22 through the portion of the stepped surface.

Optionally, the stabilizing assembly 1 further includes a stabilizing tube fixing seat 12, where the stabilizing tube fixing seat 12 is disposed at the proximal end of the stabilizing tube 11 and is fixedly connected with the stabilizing tube 11; the stabilizer tube holder 12 is also fixedly connected to the first locking element 51. The protective sleeve 8 is provided with a containing cavity 81 which is open towards the proximal end, the cross section shape of the containing cavity 81 is matched with the outline shape of the stabilizer tube fixing seat 12, and the stabilizer tube fixing seat 12 is movably arranged in the containing cavity 81 in a penetrating manner along the axial direction of the handle 2. The protective sleeve 8 is restricted to be embedded and fixed relative to the handle 2, when the stabilizing component 1 moves relative to the handle 2 along the axial direction, the protective sleeve 8 does not move, the stabilizing tube 11 moves back and forth relative to the protective sleeve 8, and the stabilizing tube fixing seat 12 moves in the accommodating cavity 81. The arrangement of the protective sleeve 8 protects the proximal end of the stabilizer tube 11 from stress concentration. Optionally, the protective sleeve 8 is made of a flexible material, for example, a silicone material.

The following describes a usage of the conveying system according to the embodiment of the present invention with reference to fig. 3 to 5.

Referring to fig. 3, when the driving member 51 is not pressed by an external force, the elastic member 61 abuts against the first locking member 52 and the second locking member 21, and the first locking member 52 is in a sprung position against the driving member 51. At this time, the locking teeth of the first locking element 52 are engaged with the locking teeth of the second locking element 21, the first locking element 52 is locked with the second locking element 21, the stabilizing assembly 1 is in the locked state, and the axial movement of the stabilizing assembly 1 relative to the handle 2 is locked. In this state, the stabilizing assembly 1 will follow as the handle 2 is pulled or pushed during the intervention. In contrast, holding and fixing the stabilization assembly 1 corresponds to fixing the axial position of the handle 2.

Referring to fig. 4 and 5, when the driving member 51 is pressed by an external force, the driving member 51 moves against the first locking member 52 in a direction away from the second locking member 21, and the elastic member 61 is pressed to store potential energy. The locking teeth of the first locking element 52 are separated from the locking teeth of the second locking element 21, the first locking element 52 is unlocked from the second locking element 21, the stabilizing assembly 1 is in said unlocked state, the axial movement of the stabilizing assembly 1 relative to the handle 2 is no longer limited, and the stabilizing assembly 1 is able to move axially relative to said handle 2. In this state, when the driver 51 is pressed during the intervention and the handle 2 is pulled or pushed while holding the stabilizer tube 11 of the stabilizer assembly 1, the first locking member 52, the elastic member 61, the guide post 54, and the slider 72 move together in the axial direction of the handle 2, and the slider 72 slides back and forth on the guide rail 71. So configured, the stabilizer assembly 1 can be kept stationary during the interventional operation, and the positioning accuracy for finding the release position of the prosthesis can be improved by moving the handle 2 back and forth together with the prosthetic valve prosthesis loaded in the outer tube 31 and the inner tube 32 while moving the handle 2 back and forth together with the outer tube 31 and the inner tube 32 in the axial direction. After finding the proper prosthesis release position, the driving member 51 is released and the elastic member 61 releases its stored potential energy, against the first locking member 52 against the second locking member 21, the first locking member 52 is moved against the driving member 51 to the sprung position, the first locking member 52 is locked with the second locking member 21, and the stabilizing assembly 1 is in said locked state. Improving the stability in the subsequent steps of release, recovery and the like.

Please refer to fig. 1 and 2, a description is given of the following release and recovery process: after finding the proper prosthesis releasing position, the stabilizing assembly 1 is in the locked state, at which time the operator can manually drive the outer tube 31 to axially advance and retract by rotating the knob 91, or electrically drive the outer tube 31 to axially advance and retract by the motor 92. It will be appreciated that a series of transmission assemblies, such as gears, racks, etc., may be provided between knob 91 and outer tube 31, and between motor 92 and outer tube 31, as will be appreciated by those skilled in the art in view of the present disclosure and will not be further described herein. During the release process, the position of the handle 2 is fixed, and the outer tube 31 is moved axially proximally, the distal prosthetic valve prosthesis being gradually exposed for release. During the recovery process, the position of the handle 2 is fixed, and the outer tube 31 is moved distally in the axial direction, and the distal prosthetic valve prosthesis is gradually received in the outer tube 31 to achieve recovery.

In other embodiments, the stabilizing assembly 1 is removably connected to the handle 2; when the stabilizing assembly 1 is in the locking state, the stabilizing assembly 1 is assembled and connected with the handle 2; when the stabilizing assembly 1 is in the unlocking state, the stabilizing assembly 1 is detached from the handle 2. In these embodiments, the stabilizing assembly 1 is not limited to being mounted on the handle 2, but rather, may be detachable with respect to the handle 2. Preferably, the detached stabilizing assembly 1 is located outside the housing 20 of the handle 2. As in the previous embodiments, the stabilizing assembly 1 likewise has a lumen extending axially therethrough, in which the catheter 3 is movably disposed. It will be appreciated that when the stabilising assembly 1 is detached from the handle 2, it is in the unlocked condition, in which the stabilising assembly 1 is free to move back and forth in the axial direction of the catheter 3. Thus, the stabilization assembly 1 may also be used as an inline catheter sheath. Specifically, the stabilization assembly 1 may be first passed through a vessel from the vessel opening to create a passageway, and then the outer tube 31 and inner tube 32, along with the prosthetic valve prosthesis loaded therein, are passed through the lumen of the stabilization assembly 1 into the vessel, and after reaching the appropriate prosthesis release position, the stabilization assembly 1 is assembled with the handle 2 and interlocked. The stabilizing assembly 1 is now in the locked state, and the axial movement of the stabilizing assembly 1 relative to the handle 2 is limited, providing a degree of stability to the release and recovery process of the prosthetic valve prosthesis. So configured, the stabilizing assembly 1 can have multiple functions, enabling versatility of one object.

Preferably, when the stabilizing assembly 1 is assembled and connected with the handle 2, a certain degree of freedom of axial fine adjustment can be provided between the stabilizing assembly and the handle. For example, the stabilizing assembly 1 and the handle 2 may be threadably connected, and the relative axial positions of the two may be fine tuned by rotating the stabilizing assembly 1. It should be understood that the connection manner of the stabilizing assembly 1 and the handle 2 is not limited in this embodiment, and those skilled in the art may also select other connection manners for the stabilizing assembly 1 and the handle 2 according to the prior art, such as a snap connection, a spline connection, etc., which is not limited in this embodiment.

In summary, in the conveying device and the conveying system provided by the invention, the conveying device comprises a stabilizing component and a handle; the stabilizing component is provided with a cavity channel which is penetrated along the axial direction of the handle and is used for the movable penetrating of the catheter; the stabilizing assembly has a locked state and an unlocked state; when the stabilizing assembly is in the locked state, axial movement of the stabilizing assembly relative to the handle is locked; the stabilizing assembly is axially movable relative to the handle when the stabilizing assembly is in the unlocked state.

So configured, the stabilizing assembly can be locked or unlocked relative to the handle, and when the stabilizing assembly is unlocked from the handle, the axial position of the stabilizing assembly can be finely adjusted, and then after being adjusted to a proper position, the stabilizing assembly is locked with the handle. Thereby, the positioning accuracy of valve release and recovery is improved. Furthermore, the axial position of the stabilizing component relative to the handle in the unlocking state is adjustable, and the stabilizing component can be used as an inline catheter sheath in some application scenes, so that multiple use functions are realized. The whole conveying device has simple operation logic and convenient use.

It should be noted that the above embodiments may be combined with each other. The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims (15)

1. A conveying apparatus, comprising: a stabilizing assembly and a handle;

the stabilizing component is provided with a cavity channel which is penetrated along the axial direction of the stabilizing component, and the cavity channel is used for the movable penetrating of the catheter; the stabilizing assembly has a locked state and an unlocked state;

when the stabilizing assembly is in the locked state, axial movement of the stabilizing assembly relative to the handle is locked;

the stabilizing assembly is axially movable relative to the handle when the stabilizing assembly is in the unlocked state.

2. The delivery device of claim 1, further comprising a switching assembly including a drive member for movement relative to the handle to switch the state of the stabilizing assembly.

3. The delivery device of claim 2, wherein the switching assembly comprises a first locking member coupled to the stabilizing assembly; the handle comprises a second locking element matched with the first locking element; when the driving piece moves relative to the handle, the first locking piece is driven to move relative to the second locking piece, so that the first locking piece and the second locking piece are locked or unlocked.

4. A delivery device as claimed in claim 3, wherein the lumen of the stabilizing assembly extends in an axial direction of the handle, the first and second locking elements having locking teeth arranged opposite in a radial direction of the handle; the driving piece is used for moving along the radial direction of the handle so as to drive the first locking piece to move relative to the second locking piece; wherein when the locking teeth of the first locking element and the locking teeth of the second locking element are separated from each other, the first locking element and the second locking element are unlocked; the first locking element and the second locking element are locked when the locking teeth of the first locking element and the locking teeth of the second locking element are engaged with each other.

5. The delivery device of claim 4, wherein the first locking element and the second locking element each have a plurality of locking teeth, the plurality of locking teeth being arranged along an axial direction of the handle.

6. The delivery device of claim 4, further comprising a potential energy assembly; the potential energy assembly stores potential energy when the driving piece drives the first locking piece to move away from the second locking piece; the potential energy assembly is also for releasing potential energy to drive the first locking element toward the second locking element.

7. The delivery device of claim 6, wherein the potential energy assembly comprises an elastic member having one end connected to the first locking member; the other end of the elastic piece is used for being connected with the handle.

8. The delivery device of claim 4, wherein the switching assembly further comprises a guide post movably coupled to the first locking element in a radial direction of the handle to guide movement of the first locking element in the radial direction of the handle.

9. The delivery device of claim 8, wherein the first locking element comprises a guide cavity extending in a radial direction of the handle, a cross-sectional shape of the guide cavity being adapted to an outer contour shape of the guide post, the guide post being movably arranged in the guide cavity in the radial direction of the handle.

10. The delivery device of claim 4, further comprising a protective sleeve, the protective sleeve being disposed over the stabilizing assembly; the handle has a mating position for securing the protective sheath, and the stabilizing assembly is movable back and forth within the protective sheath.

11. The delivery device of claim 10, wherein the stabilizing assembly comprises a stabilizing tube and a stabilizing tube holder, the stabilizing tube holder being disposed at a proximal end of the stabilizing tube and fixedly connected to the stabilizing tube; the stabilizer tube fixing seat is also fixedly connected with the first locking piece; the protective sleeve is provided with a containing cavity which is open towards the proximal end, the cross section shape of the containing cavity is matched with the outline shape of the stabilizer tube fixing seat, and the stabilizer tube fixing seat is movably arranged in the containing cavity in a penetrating mode along the axial direction of the handle.

12. The delivery device of claim 1, further comprising a slip assembly; the stabilizing component is connected with the handle through the sliding component; the sliding component is used for guiding the movement direction of the stabilizing component relative to the handle when in the unlocking state.

13. The delivery device of claim 12, wherein the glide assembly comprises a rail extending along an axial direction of the handle and a slider conforming to the rail, the rail being connected to the handle, the slider being movably disposed on the rail along the axial direction of the handle; the slide block is used for being connected with the stabilizing component.

14. The delivery device of claim 1, wherein the stabilizing assembly is removably connected to the handle; when the stabilizing component is in the locking state, the stabilizing component is assembled and connected with the handle; and when the stabilizing component is in the unlocking state, the stabilizing component is detached from the handle and disconnected.

15. A delivery system, comprising: a catheter and a delivery device as described above; the catheter is movably arranged in the cavity of the stabilizing component along the axial direction in a penetrating way.