A valve delivery system

Abstract

The present invention discloses a valve delivery system, comprising a shell, an inner tube and a fine-tuning device, wherein the fine-tuning device comprises a driving mechanism, a locking mechanism and a linkage component, wherein the linkage component switches between a first locking state and a second locking state, and in the first locking state, since the linkage component and the inner tube are slidably and anti-rotationally connected, the linkage component is locked on the shell by a first blocking force of the locking mechanism, and the driving mechanism drives the inner tube to slide relative to the linkage component, thereby realizing fine-tuning of the axial displacement of the inner tube; in the second locking state, the first blocking force applied by the locking mechanism to the linkage component is cancelled, and the linkage component can move relative to the shell, and is locked with the driving mechanism under the action of a pulling force, and rotates under the drive of the driving mechanism to drive the inner tube to rotate, thereby realizing adjustment of the circumferential displacement of the inner tube, and only one driving mechanism needs to be provided to adjust the axial sliding and circumferential rotational displacement of the inner tube.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a valve delivery system. Background Art

[0002] Heart valve disease is a common heart disease in my country, and artificial heart valve replacement is the main means and the most effective way to treat heart valve disease. When performing artificial heart valve replacement, interventional surgery is required, and the valve delivery system is used to deliver the valve stent to the center of the valve that needs to be treated.

[0003] For example, an artificial heart valve delivery system in the prior art includes an inner tube, an outer tube, a shell, an adjustable bending mechanism and a transfer mechanism. The outer tube is sleeved outside the inner tube, and the proximal end and the distal end of the inner tube correspond to the proximal end and the distal end of the outer tube that can be extended out. The transfer mechanism is used to drive the outer tube to slide back and forth in its axial direction relative to the inner tube. The transfer mechanism includes a knob sleeved outside the outer tube and rotatably arranged on the shell, and a threaded tube fixed on the distal end of the knob. The inner thread of the threaded tube is threaded with a second screw, and the second screw is sleeved on the outer tube and fixedly connected to the outer tube; the adjustable bending mechanism is used to drive the inner tube to bend the required angle relative to its axis to achieve the valve fitting to the valve position that needs to be treated in the human body. The adjustable bending mechanism includes an adjustable bending tube that is sleeved outside the inner tube and located inside the outer tube, a first screw rod fixed on the proximal end of the knob, and a traction wire whose distal end is fixed in a groove on the outer wall of the adjustable bending tube, and whose proximal end extends axially along the inner tube and is radially bent to extend out of the outer tube. The proximal end of the traction wire is wound around a linkage component that is threadedly fitted on the outside of the first screw rod.

[0004] In the valve delivery system of this structure, before the valve replacement surgery, the valve is pre-sheathed on the proximal end of the inner tube and located inside the proximal end of the outer tube, in a retracted and unreleased state. At the beginning of the surgery, the doctor inserts the proximal end of the outer tube into the position in the human body where the valve needs to be replaced, and then turns the knob clockwise. Since the second screw and the threaded tube form a first screw structure, the second screw drives the outer tube to retract toward the proximal end, exposing the valve, and the valve is released instantly; at the same time, since the first screw and the linkage component form a second screw structure, the linkage component will drive the traction wire to move toward the distal end, thereby driving the adjustable bend tube, the inner tube and the outer tube to bend to the required angle, thereby adjusting the bending angle of the valve; after the surgery is completed, the doctor turns the knob counterclockwise again, and the outer tube moves toward the distal end relative to the inner tube to reset. At the same time, the traction wire moves toward the proximal end, and the bending angles of the adjustable bend tube, the inner tube and the outer tube gradually decrease and reset to the initial non-bent state, and finally the entire delivery system is pulled out of the patient's body.

[0005] The above-mentioned valve delivery system can only move the outer tube relative to the inner tube to release the valve, and adjust the bending angle of the inner tube to adjust the bending angle of the valve. That is, the delivery system can only roughly adjust the position of the valve, and cannot fine-tune the rotation angle and axial displacement of the valve after the valve is implanted in the human body, so as to enable the valve to be more closely delivered to the valve position that needs treatment, resulting in low accuracy of the delivery valve of the delivery system and increasing the risk of surgical failure. In order to solve this technical solution in the prior art, a rotary drive mechanism and a sliding drive mechanism are respectively set in the shell to drive the inner tube separately, and the rotary drive mechanism needs to be fixed on the sliding mechanism to achieve fine-tuning of the position of the valve sleeved on the distal end of the inner tube. That is, two sets of drive mechanisms must be set in the valve delivery system to fine-tune the axial and circumferential displacements of the valve, resulting in a complex structure of the valve delivery system and a large space occupied in the shell. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is that two sets of driving mechanisms must be provided in the valve delivery system in the prior art to fine-tune the axial and circumferential displacements of the valve, resulting in a complex structure of the valve delivery system and a large space occupied in the shell.

[0007] To this end, the present invention provides a valve delivery system, comprising a housing, an inner tube arranged in the housing, and a fine-tuning device arranged on the housing; the fine-tuning device comprises

[0008] Driving mechanism;

[0009] Locking mechanism;

[0010] A linkage component is movably arranged on the housing and can be switched between a first locking state and a second locking state; the linkage component is slidably and anti-rotatably sleeved outside the inner tube;

[0011] In the first locking state, the linkage component is locked on the shell by the first blocking force applied by the locking mechanism, and the driving mechanism drives the inner tube to slide relative to the linkage component; in the second locking state, the first blocking force is cancelled, the linkage component is driven by the prying force to move and lock on the driving mechanism, and is driven by the driving mechanism to drive the inner tube to rotate synchronously; in the first locking state, the prying force is cancelled.

[0012] Optionally, in the above valve delivery system, the locking mechanism comprises a locking member provided on the housing, and the locking member applies the first blocking force to the linkage member through telescopic movement;

[0013] In a first locking state, the locking member is locked with the linkage member; in a second state, the locking member is separated from the linkage member;

[0014] The locking member is subject to a return biasing force tending to remain in the first locking state.

[0015] Optionally, in the valve delivery system, at least one first protrusion is provided on one of the mutually facing surfaces of the locking member and the linkage member, and a first groove capable of engaging with the first protrusion is provided on the other surface;

[0016] In the first locking state, the first protrusion is plugged into and matched with the first card slot; in the second locking state, the first protrusion is separated from the first card slot.

[0017] Optionally, in the above-mentioned valve delivery system, the locking piece is sleeved outside the linkage component, one of the first protrusion and the first groove is arranged on the inner wall surface of the locking piece, and the other is arranged on the outer wall surface of the linkage component; the locking piece performs telescopic movement along the radial direction of the inner tube.

[0018] Optionally, in the above valve delivery system, the driving mechanism comprises an operating component movably arranged on the housing and capable of switching between a first state and a second state, and a transition piece sleeved outside the inner tube, wherein the transition piece is arranged in linkage with the inner tube;

[0019] In the first state, the operating component moves synchronously with the transition piece to drive the inner tube to slide in a linked manner, and the linked component is in a first locking state; in the second state, the operating component moves relative to the transition piece and applies a plucking force to the linked component or the outside world applies a plucking force to the linked component, and the linked component is driven by the plucking force to move to lock on the transition piece, and then driven by the operating component to drive the inner tube to rotate and is in a second locking state.

[0020] Optionally, in the above valve delivery system, the operating component is slidably and rotationally prevented from being connected to the transition piece; a matching protrusion is provided on the linkage component; and a toggle body is provided on the operating component;

[0021] The driving mechanism further comprises a motion conversion member threadedly engaged with the transition member, and the motion conversion member is fixedly sleeved outside the inner tube;

[0022] In the first state, the operating component drives the transition piece to rotate, and the motion conversion component is driven to slide on the transition piece in linkage, one end of the linkage component is locked on the locking piece, and the other end faces the transition piece;

[0023] In the second state, the operating component slides relative to the transition piece, and the pushing body applies the pushing force to the matching portion to drive the linkage component to slide toward the transition piece and lock on the transition piece, and then the linkage component is driven by the synchronous rotation of the operating component and the transition piece to drive the inner tube to rotate.

[0024] Optionally, in the above valve delivery system, the distal end of the operating component is sleeved outside the proximal end of the linkage component, and the toggle body is arranged on the inner wall of the operating component; the matching protrusion is protrudingly arranged on the outer wall surface of the linkage component, and the matching protrusion is embedded in the toggle body;

[0025] The transition piece is arranged in the inner cavity of the operating component, the inner wall of the transition piece is provided with an internal thread, and the outer wall surface of the motion conversion piece is provided with an external thread matching the internal thread.

[0026] Optionally, the valve delivery system further comprises at least one first elastic member disposed between the transition member and the operating member;

[0027] In the second state, the first elastic member releases energy to apply a biasing force on the operating member to drive the linkage member to slide toward the transition member.

[0028] Optionally, the valve delivery system further comprises a rotation stop seat provided in the housing, and the linkage component is located between the rotation stop seat and the transition piece;

[0029] Among the end surfaces of the linkage component and the anti-rotation seat facing each other, one end surface is provided with at least one second protrusion, and the other end surface is provided with a second card groove which can be plugged and matched with the second protrusion in a one-to-one correspondence;

[0030] Among the end surfaces of the linkage component and the transition piece facing each other, at least one third protrusion is arranged on one end surface, and a third card slot which can be plugged and matched with the third protrusion is arranged on the other end surface;

[0031] In the first locking state, the second protrusion is inserted into the second slot, so that the linkage component is restricted on the housing to prevent rotation, and the third protrusion is separated from the third slot;

[0032] In the second locking state, the third protrusion is inserted into the third slot, so that the linkage component is locked on the transition piece, and the second protrusion is separated from the second slot.

[0033] Optionally, in the above valve delivery system, the end surface where the second protrusion or the third protrusion is not provided is provided with a plurality of linear elastic members arranged on the same circumference;

[0034] In corresponding locking states, at least one linear elastic member is retracted and deformed by the squeezing force of the corresponding protrusion, and a slot is formed between the retracted linear elastic member and its adjacent non-retracted linear elastic member for the protrusion to be plugged and matched.

[0035] Optionally, in the above valve delivery system, the fine-tuning device further comprises a torsion tube fixedly sleeved outside the inner tube, and the proximal end and the distal end of the inner tube extend out of the proximal end and the distal end of the torsion tube respectively;

[0036] The linkage component is arranged on the inner tube by being slidably and rotationally sleeved outside the torsion tube;

[0037] In the first locking state, the driving mechanism drives the torsion tube to slide the inner tube, and in the second locking state, the linkage component drives the torsion tube to rotate the inner tube.

[0038] Optionally, the above valve delivery system further comprises:

[0039] An outer tube is sleeved outside the inner tube and is located inside the shell; the distal end of the inner tube extends out of the outer tube; and the fine-tuning device is arranged on a portion of the inner tube extending out of the proximal end of the outer tube;

[0040] The transfer mechanism is arranged on the shell and comprises a first operating component for driving the outer tube to slide back and forth along the axial direction relative to the inner tube, and a first operating end of the first operating component is exposed outside the shell.

[0041] Optionally, the valve delivery system further comprises an adjustable bending mechanism arranged on the housing, comprising an adjustable bending component arranged outside the inner tube and located inside the outer tube, the distal end of the adjustable bending component being fixed on the inner tube, the proximal end of the adjustable bending component extending outside the proximal end of the outer tube and extending along the radial direction of the inner tube; and a second operating component connected to the proximal end of the adjustable bending component;

[0042] The second operating component is independent of the first operating component and is used to drive the adjustable bending component to bend to a desired angle; the first operating end of the first operating component and the second operating end of the second operating component are both exposed from the shell.

[0043] Optionally, in the above valve delivery system, one of the first operating component and the second operating component is arranged on the shell along the axial direction of the inner tube, and the other is arranged on the shell along a direction intersecting the axial direction of the inner tube.

[0044] Optionally, in the above valve delivery system, the housing comprises a main body extending along the axial direction of the inner tube and an extension portion intersecting and fixed on the main body;

[0045] The second operating component is arranged on the extension part, the second operating end extends out of the extension part, the first operating component and the fine-tuning device are arranged on the body, the first operating end is arranged on the outer wall of the body, and the operating end of the driving mechanism of the fine-tuning device is located outside the body;

[0046] The second operating component is located between the first operating component and the fine-tuning device.

[0047] Optionally, in the above valve delivery system, the second operating component includes a driving member rotatably disposed on the housing, the proximal end of the driving member serves as the second operating end, and the proximal end of the adjustable bending component is connected to the distal end of the driving member;

[0048] The driving member drives the proximal end of the adjustable bending component to move by rotating.

[0049] Optionally, in the above valve delivery system, the adjustable bending component comprises

[0050] An adjustable elbow is sleeved on the inner tube and is located inside the outer tube, and the proximal end of the adjustable elbow extends out of the proximal end of the outer tube; and

[0051] The traction wire is made of a bendable material, with its distal end fixed on the adjustable elbow, and its proximal end bent along the radial direction of the inner tube, passing through the part of the adjustable elbow extending outside the proximal end of the outer tube, and then extending outward, and connected to the second operating component.

[0052] Optionally, the valve delivery system further comprises a first fixing seat disposed in the housing, and the proximal end of the adjustable elbow is sealed and fixed to the inner hole of the first fixing seat through a first sealing member;

[0053] Along the radial direction of the inner tube, a fifth mounting hole is provided on the first fixing seat, and a sixth mounting hole communicating with the fifth mounting hole is provided on the shell at a position corresponding to the fifth mounting hole; and

[0054] A first one-way valve is arranged in the fifth mounting hole and the sixth mounting hole, wherein the fluid outlet of the first one-way valve is communicated with the inner cavity of the adjustable elbow, and the fluid inlet thereof is located outside the shell.

[0055] Optionally, the valve delivery system further comprises a second fixing seat disposed in the housing, the proximal end of the outer tube being sealed by a second sealing member and slidably disposed on an inner hole of the second fixing seat;

[0056] The proximal end of the second fixing seat is fixedly connected to the distal end of the first fixing seat, and the proximal end of the adjustable elbow passes through the second fixing seat and is fixed on the first fixing seat;

[0057] Along the radial direction of the inner tube, the second fixing seat is provided with a seventh mounting hole, and the housing is provided with an eighth mounting hole communicating with the seventh mounting hole at a position corresponding to the seventh mounting hole;

[0058] A second one-way valve is arranged in the seventh mounting hole and the eighth mounting hole, wherein the fluid outlet of the second one-way valve is communicated with the inner cavity of the outer tube, and the fluid inlet thereof is located outside the shell.

[0059] Optionally, in the above valve delivery system, the first operating component comprises

[0060] A rotating body rotatably disposed on the inner wall of the shell, wherein the distal end of the rotating body is bent into a clearance hole on the shell and serves as the first operating end;

[0061] A sliding member is threadably engaged in the rotating body; the sliding member is fixedly sleeved on the outer tube.

[0062] The technical solution of the present invention has the following advantages:

[0063] 1. The valve delivery system provided by the present invention comprises a shell, an inner tube arranged in the shell and a fine-tuning device arranged on the shell; the fine-tuning device comprises a driving mechanism, a locking mechanism and a linkage component, the linkage component can be movably arranged on the shell and can switch between a first locking state and a second locking state; the linkage component can be slidably and anti-rotationally sleeved on the outside of the inner tube; in the first locking state, the linkage component is locked on the shell by a first blocking force applied by the locking mechanism, and the driving mechanism drives the inner tube to slide relative to the linkage component; in the second locking state, the first blocking force is cancelled, the linkage component is driven by the pulling force to move to lock on the driving mechanism, and is driven by the driving mechanism to drive the inner tube to rotate synchronously; in the first locking state, the pulling force is cancelled.

[0064] In the valve delivery system of this structure, the linkage component switches between a first locking state and a second locking state. In the first locking state, since the linkage component and the inner tube are slidably and anti-rotationally connected, the linkage component is locked on the shell by the first blocking force of the locking mechanism, and the driving mechanism drives the inner tube to slide relative to the linkage component, while the linkage component remains stationary, thereby achieving fine-tuning of the axial displacement of the valve sleeved on the inner tube. In the second locking state, the first blocking force applied to the linkage component by the locking mechanism is revoked, the linkage component can move relative to the shell, and is locked with the driving mechanism under the action of the pulling force, and rotates under the drive of the driving mechanism, thereby driving the inner tube anti-rotationally connected thereto to rotate, thereby achieving adjustment of the circumferential displacement of the valve sleeved on the inner tube. Therefore, the valve delivery system only needs to set up one driving mechanism to adjust the axial sliding distance and circumferential rotational displacement of the inner tube, thereby making the structure of the fine-tuning device simple and compact, and occupying a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0066] Figure 1 A schematic diagram of the structure of the valve delivery system provided in Example 1 of the present invention;

[0067] Figure 2a for Figure 1 Schematic diagram of the fine adjustment device of the mid-valve delivery system (one half shell of the first rotating cap is removed);

[0068] Figure 2b It is a longitudinal cross-sectional schematic diagram of a part of the fine-tuning device;

[0069] Figure 3a It is an exploded three-dimensional schematic diagram of the linkage components, locking components and anti-rotation seats in the fine-tuning device;

[0070] Figure 3b It is a partial longitudinal cross-sectional schematic diagram of the fine-tuning device after removing the first rotating cap;

[0071] Figure 3c A schematic diagram of the fine-tuning device after removing the second shell and the first rotating cap;

[0072] Figure 4 The three-dimensional structure diagram of the fine-tuning device after removing the first rotating cap (with Figure 3b The direction of the fine-tuning device in is just opposite).

[0073] Figure 5 It is a longitudinal cross-sectional schematic diagram of the linkage component;

[0074] Figure 6 It is a longitudinal cross-sectional schematic diagram of the fine-tuning device (rotated 90 degrees to the right);

[0075] Figure 7 is a schematic structural diagram of a first rotating cap;

[0076] Figure 8a is a schematic diagram of a partial structure of a second shell of the housing;

[0077] Figure 8b is a schematic structural diagram of a first shell of a housing;

[0078] Figure 9a It is a cross-sectional schematic diagram of the inner tube, the proximal end of the twist tube and the three-way valve after being matched;

[0079] Figure 9b It is a schematic diagram of the proximal cross-section of the outer tube, the claws, and the inner tube;

[0080] Fig.10 is a cross-sectional schematic diagram of a transfer mechanism in a valve delivery system;

[0081] Fig.11 It is a schematic diagram of the three-dimensional structure of the transfer mechanism after removing half of the rotating body;

[0082] Fig.12 It is a schematic diagram of the structure of the sliding member and the anti-rotation member;

[0083] Fig.13 It is a three-dimensional schematic diagram of an adjustable bending mechanism in a valve delivery system;

[0084] Fig.14 for Fig.13 Schematic diagram of the wiring profile of the adjustable bending mechanism;

[0085] Fig.15 for Fig.13 Schematic diagram of the coordination between the adjustable bending mechanism and the housing;

[0086] Fig.16 It is a longitudinal cross-sectional schematic diagram of the inner tube, the adjustable bending tube, the torsion tube and the traction wire;

[0087] Fig.17 It is a schematic diagram of the coordination of the outer tube, the adjustable elbow, the traction wire, the first fixing seat and the second fixing seat;

[0088] Description of reference numerals:

[0089] 1-shell; 11-first shell; 12-second shell; 13-head end; 14-first retaining rib; 15-second retaining rib; 16-first column; 17-rotation stop seat; 18-first limit plate; 19-second limit plate;

[0090] 2-transfer mechanism; 21-rotating body; 211-second driving part; 22-sliding member; 221-second matching part; 23-second rotating cap; 24-anti-rotation member; 241-guide groove;

[0091] 31-adjustable elbow; 32-traction wire; 33-driving member; 34-sliding block; 35-third rotating cap; 36-guide slide;

[0092] 41-operating part; 411-arc limit strip; 412-sliding body; 42-transition part; 421-guide protrusion; 422-third protrusion; 43-linkage part; 431-first annular seat; 4311-third mounting hole; 432-second annular seat; 4321-fourth mounting hole; 433-linear elastic part; 434-matching body; 4341-matching protrusion; 4342-pull ring; 435-first card slot; 436-first annular slide groove; 44-motion conversion part; 45-locking part; 451-first mounting hole; 452-first protrusion;

[0093] 51-outer tube; 52-inner tube; 53-torsion tube;

[0094] 61-first one-way valve; 62-second one-way valve; 63-three-way valve;

[0095] 71-first fixing seat; 72-second fixing seat;

[0096] 81-clamp; 82-sealing ring. DETAILED DESCRIPTION

[0097] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0098] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0099] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0101] Example 1

[0102] This embodiment provides a valve delivery system, such as Figures 1 to 15 As shown, it includes a housing 1, an inner tube 52, a torsion tube 53, an outer tube 51, a transfer mechanism 2 and a fine-tuning device. In this embodiment, for the convenience of description, the end of each component close to human operation is referred to as the proximal end, and the end away from human operation is referred to as the distal end. Figure 8a and Figure 8b As shown, the housing includes a first housing 11 and a second housing 12. The two housings are preferably connected by snap-fit ​​to enclose the inner cavity of the housing. Of course, other detachable connection methods can also be used to fix them.

[0103] The outer tube 51 is sleeved on the outer side of the inner tube 52 and is located in the shell 1, the proximal end of the outer tube 51 is located in the shell 1, and the distal end of the outer tube extends out of the distal end of the shell; the proximal end of the inner tube 52 extends out of the proximal end of the outer tube 51 and the proximal end of the shell, and the distal end of the inner tube 52 extends out of the distal end of the shell; the torsion tube 53 is sleeved on the outer side of the inner tube 52 and is located in the outer tube 51, the proximal end of the torsion tube 53 extends out of the proximal end of the shell and is located in the inner tube, the distal end of the torsion tube extends out of the distal end of the shell and is located in the distal end of the inner tube 52, and the torsion tube 53 is fixed on the outer wall of the inner tube. Optionally, the distal end of the torsion tube is fixed to the inner tube, or the proximal end of the torsion tube is fixed to the inner tube. The transfer mechanism 2 is arranged on the shell 1, and is used to drive the outer tube 51 to slide back and forth axially relative to the inner tube 52, so that the distal end of the outer tube 51 retracts toward its proximal end to expose the distal end of the inner tube 52, and the distal end of the outer tube 51 extends out, and the distal end of the outer tube 51 is covered outside the distal end of the inner tube 52.

[0104] The fine-tuning device is arranged on the protruding portion of the proximal end of the torsion tube 53 that protrudes outside the proximal end of the outer tube 51, that is, it is arranged away from the proximal end of the outer tube, and is used to drive the rotation angle and axial movement distance of the torsion tube 53, so as to control the rotation angle and axial movement distance of the inner tube 52, thereby realizing fine-tuning of the rotation angle and axial displacement of the valve sleeved on the inner tube after release.

[0105] The fine-tuning device includes a driving mechanism, a locking mechanism and a linkage component 43. The linkage component 43 is movably arranged on the housing 1 and can be switched between a first locking state and a second locking state; the linkage component 43 is slidably and anti-rotatably sleeved on the torsion tube 53; Figure 3b and Figure 3c As shown, optionally, two opposite first straight surfaces 531 are provided on the outer wall of the torsion tube 53, and a second straight surface corresponding to the first straight surface is provided on the inner hole wall of the linkage component 43, and the first straight surface cooperates with the second straight surface to realize the rotation and slidable connection between the linkage component 43 and the torsion tube 53. There can also be one first straight surface, and correspondingly there can be one second straight surface.

[0106] In the first locking state, the linkage component 43 is locked on the housing 1 by the first blocking force applied by the locking mechanism, and the driving mechanism drives the torsion tube 53 to slide relative to the linkage component 43; in the second locking state, the first blocking force is cancelled, the linkage component 43 is driven by the shifting force to move and lock on the driving mechanism, and is driven by the driving mechanism to drive the torsion tube 53 to rotate synchronously; in the first locking state, the shifting force is cancelled.

[0107] The locking mechanism includes a locking member 45 and a return spring (not shown in the figure). The locking member 45 performs a telescopic movement along the radial direction of the inner tube 52 to apply a first blocking force to the linkage member 43. The locking member 45 is subjected to a return bias force and tends to remain in the first locking state. Figure 3b and Figure 4 As shown, the locking member 45 is sleeved on the distal end of the linkage member 43, the inner wall surface of the locking member 45 is provided with a first protrusion 452, and the outer wall surface of the linkage member 43 is provided with an annular first groove 435; the inner side end of the locking member 45 extends into the housing 1, and the outer side end thereof extends into the first clearance hole 202 on the housing 1 as the third operating end, as shown in FIG. Figure 8a , Figure 3b and Figure 3c As shown, a button is provided on the third operating end, and the button is located in an annular retaining ring provided on the outer periphery of the first clearance hole on the housing 1. A first mounting hole 451 is provided on both side walls of the locking member 45 along the radial direction of the inner tube, and a first column 16 corresponding to the first mounting hole 451 is provided on the inner wall of the housing 1. Figure 8b shown.

[0108] Optionally, there are two return springs, which are installed in the first mounting hole 451 one by one, one end of the return spring is located in the first mounting hole 451, and the other end extends out of the first mounting hole 451 and abuts against the first column 16. The return spring is a compression spring. Figure 4 and Figure 2b In the embodiment, the return spring applies an upward return bias force to the locking member 45. In this embodiment, the return bias force acts as a first blocking force, causing the first protrusion 452 to be engaged in the first groove 435, thereby limiting the linkage member 43 on the locking member 45 along the radial direction of the inner tube. Figure 3c In the embodiment, two first guide grooves 201 are provided on the inner wall of the housing, and the convex walls provided with the first mounting holes 451 on both sides of the locking member are slidably provided in one of the first guide grooves 201, so that the locking member is restricted to slide along the radial direction of the inner tube, thereby restricting the linkage member on the housing 1, so that the linkage member 43 is in the first locking state. Figure 3b When the button is pressed downward, the reset bias force is overcome, and the first protrusion 452 withdraws from the first slot 435, releasing the first blocking force, and the linkage component 43 and the locking member 45 are in an unlocked state. The linkage component 43 can slide axially along the inner tube 52 relative to the locking member 45.

[0109] like Figure 6 As shown, the driving mechanism includes an operating component 41, a transition component 42 and a motion conversion component 44. The operating component 41 is movably arranged on the housing 1 so as to be switchable between a first state and a second state. For example, the operating component 41 is a first rotating cap, the distal end of the first rotating cap is an open mouth, and the proximal end of the first rotating cap is provided with a second clearance hole. The transition component 42 is a first threaded tube, which is anti-rotationally and slidably arranged on the inner wall surface of the locking component 45.

[0110] The distal end of the operating component is sleeved outside the proximal end of the shell, the linkage component is arranged in the proximal inner cavity of the shell, the distal end of the transition piece is arranged in the shell, and its proximal end is arranged in the inner cavity of the operating component.

[0111] The distal end of the transition piece is anti-sliply arranged on the proximal end of the housing, and the proximal end of the transition piece 42 extends into the inner cavity of the first rotating cap and is provided with a guide protrusion 421, such as Figure 8a As shown, two arc limit strips 20 are provided on the inner wall of the proximal end of the housing. Figure 2a As shown, two annular outer edges are provided on the distal outer wall of the transition piece, two arc limit strips 20 are located between the two annular outer edges, and the two annular outer edges are respectively abutted against an arc limit strip, thereby limiting the axial sliding displacement of the transition piece 42, and the transition piece can only rotate with the operating component.

[0112] for example, Figure 2a Two guide protrusions 421 are provided on the outer wall of the middle transition piece 42. Preferably, the two guide protrusions 421 are symmetrically arranged on both sides of the axis of the transition piece 42. Figure 7 As shown, the inner wall surface of the operating component 41 is provided with an arc-shaped limit strip 411 arranged axially and extending radially, and the two arc-shaped limit strips 411 are respectively provided with a first slide groove and a second slide groove, and the guide protrusion 421 is inserted into the first slide groove and the second slide groove to connect the proximal end of the transition piece 42 to the operating component 41 in an anti-rotation and slidable manner.

[0113] Optionally, the motion conversion component 44 is a first fixed nut, which is fixed outside the torsion tube 53. A threaded fit is formed between the first fixed nut and the inner wall surface of the first threaded tube to form a screw structure. The first threaded tube is linked to the torsion tube 53 through the first fixed nut.

[0114] like Figure 2a and Figure 2b As shown, the operating component 41 is slidably and rotatably arranged on the housing, and an annular toggle body 412 is arranged on the inner wall surface of the operating component 41. For example, the toggle body 412 is a first annular groove formed on the inner wall surface of the operating component 41. Figure 7 In the embodiment, the inner wall surface of the operating component 41 is provided with a recessed annular step, a washer or a retaining ring is provided on the right step surface of the annular step, and a first annular groove is formed between the washer or the retaining ring and the left step surface of the annular step.

[0115] A matching body 434 is rotatably and non-sliply provided on the outer wall of the linkage component 43. Figure 4 and Figure 5As shown, the outer wall surface of the linkage component 43 is provided with a second annular groove 436, and the matching body 434 includes a pull ring 4342 rotatably sleeved in the second annular groove, and a matching protrusion 4341 radially protruding on the outer wall of the pull ring 4342, and the matching protrusion 4341 is located outside the second annular groove. Optionally, there are two matching protrusions 4341, and optimally, the two matching protrusions 4341 are symmetrically distributed, and the two side walls of the second annular groove limit the axial direction of the pull ring, so that the pull ring and the linkage component 43 slide synchronously, and the linkage component can rotate relative to the pull ring, that is, the matching body and the linkage component are anti-slip and rotatably connected.

[0116] like Figure 3b , Figure 8a and Figure 8b As shown, a third clearance hole 203 is provided on the shell 1, and two matching protrusions 4341 respectively pass through a third clearance hole 203 to extend out of the shell 1, and are embedded in the first annular groove on the operating component. The end of the matching protrusion 4341 is clearance-matched with the bottom of the first annular groove, so that the operating component can rotate relative to the matching protrusion 4341, and the two groove walls of the first annular groove limit the axial direction of the matching protrusion 4341, so that the operating component and the matching protrusion 4341 are rotatable and anti-slip connected.

[0117] like Figure 2a and Figure 5 As shown, in the end faces of the linkage component 43 and the transition piece 42 facing each other, the proximal end face of the linkage component 43 is provided with a third slot, and the distal end face of the transition piece 42 is provided with a third protrusion 422, for example, the third protrusion 422 is two arc-shaped protrusions, and the third protrusions 422 correspond to the third slots one by one and can be plugged in. When the linkage component 43 slides toward the transition piece 42 along with the operating component 41, the third slot is gradually sheathed on the third protrusion 422, and the linkage component 43 is locked on the transition piece 42 through the plug-in cooperation of the third protrusion 422 and the third slot, and the two are in an anti-rotation connection.

[0118] Optimally, as Figure 5 As shown, a first groove is provided on the proximal end face of the linkage component, and a plurality of fourth mounting holes 4321 are provided at the bottom of the first groove. All the fourth mounting holes 4321 are distributed on the same circumference, and linear elastic members 433 are provided in the fourth mounting holes 4321 in a one-to-one manner. One end of the linear elastic member is located in the fourth mounting hole, and the other end is located in the first groove. For example, the linear elastic member 433 is a spring pin. When the third protrusion 422 axially squeezes the spring pin at the corresponding position, the part of the spring pin retracts and deforms, and a third slot is formed between the retracted spring pin and the adjacent spring pin that has not retracted and deformed.

[0119] In the first locking state, the distal end of the linkage component 43 is locked on the locking member 45, and the proximal end of the linkage component 43 is separated from the transition member 42. Since a lead screw structure is formed between the transition member 42 and the motion conversion member 44, the operating component is in the first state. When the operating component 41 rotates to drive the transition member 42 to rotate, the linkage drives the motion conversion member 44 to slide on the transition member 42. During this process, the linkage component 43 and the matching protrusion will not be driven to rotate. At this time, the linkage component 43 and the matching body are in a stationary state relative to the shell; in the second locking state, the operating component is in the second state. Figure 3b In the process, the button is pressed downward to overcome the biasing force of the return spring, so that the first protrusion 452 of the locking member is withdrawn from the first slot 435. At this time, the linkage member 43 is separated from the locking member 45. At the same time, since the operating member and the transition member are slidably connected, the operating member is Figure 3b The first annular groove of the linkage component 43 drives the matching protrusion of the matching body to slide to the right in the third clearance hole synchronously. Since the linkage component 43 is anti-slidingly connected to the matching body, and the matching body is anti-rotatingly connected to the linkage component 43, the matching body drives the linkage component 43 to slide to the right on the torsion tube, and the distal end of the linkage component 43 gradually withdraws from the inner hole of the locking member 45. The elastic pin on the proximal end of the linkage component 43 is squeezed and retracted by the third protrusion 422 on the transition member, so that a third slot is formed between the part of the elastic pin and the adjacent unretracted elastic pin, and the third protrusion 422 is inserted into the third slot, thereby locking the linkage component 43 in the transition piece; at this time, the operating component rotates, since the operating component and the matching body 434 are rotatably connected, the linkage component 43 and the matching body 434 are rotatably connected, and the operating component and the transition piece are anti-rotationally connected, the operating component drives the transition piece to rotate, and then the transition piece drives the linkage component 43 to rotate, at this time the linkage component 43 rotates relative to the pull ring, and the matching protrusion remains in the third yielding hole and will not rotate with the linkage component 43; then the linkage component 43 drives the torsion tube anti-rotationally connected to it to rotate.

[0120] That is, in the first locking state, the operating component can rotate relative to the linkage component 43 and the matching body, and the operating component is connected to the transition piece to prevent rotation; in the second locking state, the operating component first slides relative to the transition piece synchronously with the matching body and the linkage component 43, and then the operating component rotates relative to the matching body synchronously with the transition piece and the linkage component 43.

[0121] Therefore, in the fine-tuning device, due to the provision of the linkage component 43 and the matching body 434, only one driving mechanism is required to drive the torsion tube 53 and the inner tube 52 to move and rotate along their axial direction, and there is no need to separately provide two sets of driving mechanisms to drive the torsion tube 53 to rotate and slide respectively. Therefore, the fine-tuning device can achieve the adjustment of the rotation and sliding of the torsion tube 53 while having a compact structure and occupying a small space.

[0122] The fine-tuning device further includes at least one first elastic member (not shown in the figure) disposed between the transition member 42 and the operating member 41; for example, the first elastic member is a tension spring, and in the second state, the first elastic member releases energy to apply a biasing force to the operating member 41 to drive the linkage member 43 to slide toward the transition member 42. The number of tension springs is one, two, three, etc., and the specific number is determined according to demand and is not limited.

[0123] exist Figure 2a In the embodiment, the guide protrusions on the two side walls of the transition piece 42 are provided with a second mounting hole extending axially, and the opening of the second mounting hole is directly opposite to the arc-shaped limit strip 411. The tension spring is arranged in the second mounting hole, one end of which abuts against the hole wall end of the second mounting hole directly opposite to the opening, and the other end abuts against the arc-shaped limit strip 411. When the operating component 41 is relative to the transition piece 42, Figure 2a When sliding toward the right, the space between the arc limit strip 411 and the second mounting hole increases, the tension spring is stretched to release energy, and the released energy drives the arc limit strip 411 to drive the operating component 41 and the linkage component 43 to move toward the right as a whole (i.e., slide toward the proximal end).

[0124] In order to prevent the linkage component 43 from rotating when the operating component 41 rotates in the first locking state, the fine-tuning device is also provided with an anti-rotation mechanism, such as Figure 3a , Figure 3b and Figure 4 As shown, the anti-rotation mechanism includes a rotation stop seat 17, a second protrusion 171 and a second slot. The rotation stop seat 17 is arranged on the housing 1, for example, Figure 3c In the embodiment, a limiting retaining rib 204 is arranged axially and radially extending on one side wall of the housing 1, and a limiting slot is formed between the limiting retaining rib 204 and the distal end of the first guide slot 201, and second protrusions are respectively provided on the two outer ends of the anti-rotation seat 17, and the two second protrusions are respectively plugged into a limiting slot to achieve a fixed connection between the anti-rotation seat 17 and the housing 1. Alternatively, the anti-rotation seat is fixed to the housing by other fixing methods, such as screws or bolt assemblies.

[0125] The linkage member 43 is located between the anti-rotation seat 17 and the transition member 42; the end surfaces of the linkage member 43 and the anti-rotation seat 17 facing each other, such as Figure 3a As shown, at least one second protrusion 171 is provided on the proximal end face of the anti-rotation seat 17, and a second groove corresponding to the second protrusion 171 is provided on the end face of the linkage component 43, and the second protrusion 171 is plugged and matched through the second groove, so that in the first locking state, the linkage component 43 is locked by the locking member 45 and is anti-rotated on the housing 1. At the same time, one end of the linkage component 43 provided with the second groove abuts against the end face of the anti-rotation seat 17, and the anti-rotation seat 17 limits the sliding position of the distal end of the linkage component 43.

[0126] like Figure 4 and Figure 5 As shown, a concave second groove is provided on the distal end of the linkage component 43, and a plurality of third mounting holes 4311 are provided on the bottom of the second groove, and all the third mounting holes 4311 are distributed on the same circumference; a linear elastic member 433 is provided in each third mounting hole 4311, and one end of the linear elastic member is located in the third mounting hole, and the other end is located in the second groove. For example, the linear elastic member 433 is a spring pin. In the first locking state, the second protrusion 171 axially squeezes the linear elastic member 433 at the alignment position, and the linear elastic member 433 is squeezed and retracted by the second protrusion 171 to deform, and the retracted linear elastic member 433 and its adjacent non-retracted linear elastic member 433 form the above-mentioned second slot, and the non-retracted linear elastic member 433 is blocked and limited in the circumferential direction by the second protrusion 171, thereby limiting the linkage component to be rotationally prevented on the anti-rotation seat. The spring pin can be replaced by other linear elastic members, such as a spring tube. Of course, the second slot and the third slot can be directly grooves without the need for spring pins.

[0127] Optimally, as Figure 5 As shown, the linkage component 43 includes a first annular seat 431 and a second annular seat 432. The proximal end of the first annular seat and the distal end of the second annular seat are fixedly connected by snap-fitting, for example, the first annular seat includes a first annular body, a first annular protrusion protruding from the distal end surface of the first annular body, and the third mounting hole 4311 is provided on the first annular protrusion; the first annular body is provided with a snap-fitting hole, the distal end of the second annular seat is provided with a radially protruding clamping block, the distal end of the second annular seat extends into the first annular body, the clamping block is clamped in the snap-fitting hole, the proximal end of the second annular seat is provided with the above-mentioned first groove and fourth mounting hole 4321; the outer peripheral wall of the second annular seat 432 is provided with a second annular slide groove.

[0128] In addition, the second slot is formed by a retracted spring pin and an adjacent unretracted spring pin. Since the linkage component 43 needs to rotate a required angle in the second locking state, no matter how much the linkage component 43 rotates, when the linkage component 43 switches from the second locking state to the first locking state, the second protrusion 171 can squeeze the spring pin opposite to it to retract, thereby forming the above-mentioned second slot; similarly, when the linkage component 43 switches from the first locking state to the second locking state again, the third protrusion 422 can squeeze the spring pin opposite to it to retract, thereby forming the above-mentioned third slot.

[0129] It should be noted that: if the above-mentioned second slot and third slot are not formed by linear elastic parts, it is necessary to rotate the linkage component 43 first when switching from the second locking state to the first locking state, so that the third slot and the second slot are reset to the corresponding positions in the last first locking state, so that when the linkage component 43 slides toward the anti-rotation seat, the second slot can be plugged and matched with the second protrusion 171; similarly, when the linkage component 43 slides toward the transition piece again, the third slot can be plugged and matched with the third protrusion 422.

[0130] like Figure 9a As shown, a three-way valve 63 is provided on the proximal end of the torsion tube 53, and the fluid outlet of the three-way valve 63 is sealed and sleeved outside the proximal end of the torsion tube 53. The proximal end of the inner tube 52 extends to a first inlet 631 of the three-way valve 63 in the axial direction of the inner tube, and the first inlet is communicated with the inner cavity of the inner tube 52; the proximal end of the torsion tube 53 extends to a second inlet 632 on the side wall of the three-way valve 63, and the second inlet is connected with the inner cavity of the torsion tube 53. Physiological saline is injected into the inner cavity of the inner tube 52 through the first inlet to drive away the bubbles in the inner tube 52; similarly, physiological saline is injected into the inner cavity of the torsion tube 53 through the second inlet to drive away the bubbles in the torsion tube 53.

[0131] As for the torsion tube 53, it includes two sections. The first section is made of medical plastic material, and the second section is a stainless steel tube. The proximal end of the first section and the distal end of the second section are sealed and fixedly connected through a connecting sleeve. The second section adopts a stainless steel tube, and the distal end of the second section is fixed in the inner cavity of the above-mentioned second annular seat. The proximal end of the second section serves as the proximal end of the torsion tube 53; the proximal end of the first section extends into the inner cavity of the second annular seat, and the connecting sleeve is located in the inner cavities of the first annular seat and the second annular seat. The second section is anti-rotationally connected and slidably connected to the second annular seat, and the above-mentioned first flat surface is set; the first section passes through the inner hole of the first annular seat and the two avoid each other. The above-mentioned motion conversion member 44 is directly fixed on the second section, and the second section is mainly used to provide support force for the installation of the motion conversion member and the linkage component 43, and the sliding of the linkage component 43 on the second section.

[0132] like Fig.10As shown, the transfer mechanism 2 includes a rotating body 21 and a sliding member 22, and an annular avoidance hole is provided on the outer periphery of the distal end of the shell. A head end 13 is sleeved on the distal end of the shell, and an annular avoidance hole is formed between the proximal end of the head end 13 and the distal end of the shell 1. Optimally, the shell 1 is formed by two symmetrical half shells. The first half shell and the second half shell, the rotating body 21 is rotatably arranged on the inner wall surface of the shell 1, and the distal end of the rotating body 21 extends out of the shell 1 through the annular avoidance hole, and the inner cavity wall of the rotating body 21 is provided with an internal thread; the sliding member 22 is fixedly sleeved on the outer tube 51; the outer peripheral wall of the sliding member 22 is provided with an external thread that cooperates with the internal thread, so that the thread cooperation between the sliding member 22 and the rotating body 21 forms a screw structure. For example, the sliding member 22 is a second fixing nut. The rotating body 21 includes a hollow cylinder and a second driving part 211. The inner wall of the cylinder is provided with internal threads. The proximal end of the second driving part 211 is fixed to the distal end of the cylinder. The distal end of the second driving part 211 is bent through the annular avoidance hole to extend out of the housing. Fig.10 As shown, a second rotating cap 23 is fixed to the distal end of the second driving portion 211. The second rotating cap 23 is annular and is directly sleeved outside the annular avoidance hole. For example, the inner wall of the second rotating cap 23 is connected to the outer peripheral wall of the second driving portion 211 by a snap-fit ​​connection.

[0133] In this embodiment, since the rotating body 21 is rotatably provided on the outer shell, when the rotating body 21 rotates, the outer shell will not move; at the same time, the outer sheath is directly connected to the second fixing nut, and the second fixing nut and the cylindrical thread of the rotating body 21 cooperate to form a screw structure. When the screw structure is in motion, only the rotating body 21 rotates to drive the second fixing nut to drive the outer sheath to move, and the outer shell and the inner tube 52 do not move. Therefore, while satisfying the driving of the outer tube 51 to move relative to the inner tube 52, neither the outer shell nor the inner tube 52 will shake, and thus will not cause the valve sleeved on the inner tube 52 to shake, thereby ensuring that the valve will not be displaced during implantation and release, thereby reducing the risk of failure of valve replacement surgery.

[0134] like Fig.10 , Fig.11 and Fig.12 The transfer mechanism 2 also includes an anti-rotation part 24 fixed on the outer shell and extending along the sliding direction of the sliding part 22; the second fixing nut is provided with a first matching hole 222 for the anti-rotation part 24 to pass through on the part avoiding the fourth clearance hole 223, and the second fixing nut is sleeved on the anti-rotation part 24 through the first matching hole. The anti-rotation part 24 limits the second fixing nut to only slide linearly along the extension direction of the anti-rotation part 24 and cannot rotate, further ensuring that the second fixing nut can only drive the outer tube 51 to make reciprocating linear sliding.

[0135] Optionally, the anti-rotation member 24 is provided with a guide groove 241 extending along the sliding direction of the sliding member 22; the interior of the sliding member 22 is a hollow cavity, a second matching portion 221 is fixed in the hollow cavity, and a fourth clearance hole 223 is provided on the second matching portion 221; the outer wall of the second matching portion 221 and the inner wall of the sliding member 22 form a first matching hole 222, and the second matching portion 221 is inserted into the guide groove 241. When the sliding member 22 is sliding linearly, the first matching hole and the guide groove 241 both guide and limit the sliding of the sliding member 22. At the same time, the guide groove 241 can also allow the outer tube 51 and the inner tube 52, the torsion tube 53 and the adjustable curved tube 31 mentioned below to pass through, without the need to set a separate clearance hole, so that the structure of the anti-rotation member 24 is compact.

[0136] Preferably, the guide groove 241 is a U-shaped groove, and correspondingly, the second matching portion 221 is a U-shaped protrusion, and the open ends of the U-shaped protrusion are fixed to the inner wall surface of the sliding member 22. The distal end of the anti-rotation member 24 is fixed to the inner cavity of the head end 13, and the proximal end is fixed to the housing 1 through the second fixing seat 72; an annular avoidance hole is formed between the proximal end of the head end 13 and the distal end of the housing 1.

[0137] For example, the head end 13 and the distal end of the anti-rotation part 24 are directly fixed by screws, the proximal end of the head end 13 and the distal end of the shell 1 are completely separated, and the two are indirectly fixedly connected by the anti-rotation part 24, the second fixed seat 72 and the second fixed seat 72 to ensure that the annular avoidance hole has a 360-degree avoidance in the circumferential direction, and the above-mentioned second rotating cap 23 can rotate 360 ​​degrees.

[0138] A fourth recessed slot is provided on the distal end surface of the second fixing seat 72, and the proximal end of the anti-rotation member 24 is inserted into the fourth recessed slot. For example, the longitudinal cross-section of the anti-rotation member 24 is U-shaped, and the fourth recessed slot is a U-shaped slot corresponding to the proximal end of the anti-rotation member 24.

[0139] like Fig.11 As shown, the distal end of the second fixed seat 72 is fixed to the anti-rotation part 24, and the proximal end of the second fixed seat 72 is fixed with the first fixed seat 71. As shown in Figure 8, the first retaining rib 14 and the second retaining rib 15 are respectively provided on the circumferential direction of the inner wall of the shell 1; and the first limiting plate 18 and the second limiting plate 19 are arranged side by side along the axial direction of the outer tube 51, the second fixed seat 72 and the first fixed seat 71 are clamped between the first limiting plate 18 and the second limiting plate 19, the distal end of the second fixed seat 72 extends out of the area of ​​the two limiting plates, and the end face of the distal end abuts on the first retaining rib 14, and the proximal end of the first fixed seat 71 extends out of the area of ​​the two limiting plates, and the end face of the proximal end abuts on the second retaining rib 15, so that the second fixed seat 72 and the first fixed seat 71 are installed on the shell 1, and the head end 13 and the shell 1 are fixedly connected.

[0140] For example, the second fixed seat 72 has the same structure as the first fixed seat 71. The structure of the second fixed seat 72 is taken as an example for explanation. The second fixed seat 72 includes a tube body and an annular disk fixed on the distal end of the tube body, wherein the tube body is clamped between the first limiting plate 18 and the second limiting plate 19, and the annular disk abuts against the first retaining rib 14.

[0141] The second fixing seat 72 and the first fixing seat 71 are connected by fasteners, and the proximal end of the second fixing seat 72 and the distal end of the first fixing seat 71 are connected by snaps. Or they are connected only by fasteners. In addition, the second fixing seat 72 and the first fixing seat 71 are respectively provided with a fifth clearance hole and a sixth clearance hole for the tube to pass through.

[0142] The proximal end of the outer tube 51 is slidably disposed in the inner hole of the second fixing seat 72. Similar to the above-mentioned torsion tube 53, the outer tube 51 also includes two sections. The first section of the outer tube is made of medical plastic, and the second section of the outer tube is a stainless steel tube. The proximal end of the first section of the outer tube and the distal end of the second section of the outer tube are respectively fixed in the inner hole of the second fixing nut of the above-mentioned transfer mechanism. Fig.10 As shown, the distal end and proximal end of the second fixing nut are respectively provided with a first annular step and a second annular step, the proximal end of the first section of the outer tube is fixed on the first annular step, the proximal end of the second section of the outer tube extends out of the second fixing nut and extends and is fixed in the fifth yield hole of the second fixing seat, and a sealing ring and a clamp are provided on the second annular step, and the clamp blocks and limits the sealing ring on the second annular step, so that a sealed connection is formed between the second section of the outer tube and the second fixing nut.

[0143] like Fig.10 As shown, a step is provided on the proximal end of the fifth evacuation hole of the second fixing seat 72, and a sealing ring 82 and a clamp 81 are provided on the step. The clamp 81 restricts the sealing ring 82 on the first fixing seat 71, so that the proximal end of the outer tube can be slidably and sealed on the second fixing seat.

[0144] like Fig.13 and Fig.14 As shown, the valve delivery system also includes an adjustable bending mechanism, which includes an adjustable bending component arranged outside the inner tube 52 and located inside the outer tube 51, the distal end of the adjustable bending component is located inside the distal end of the inner tube 52, and its proximal end extends outside the proximal end of the outer tube 51 and extends along the radial bending of the inner tube 52; and a second operating component connected to the proximal end of the adjustable bending component; the second operating component is independent of the first operating component of the above-mentioned transfer mechanism 2 and is used to drive the adjustable bending component to bend to a desired angle; the second operating end of the second operating component and the first operating end of the first operating component of the above-mentioned transfer mechanism 2 are both exposed to the housing 1. Since the first operating component and the second operating component are independently arranged, the doctor can adjust the axial sliding distance of the outer tube 51 and the bending angle of the inner tube 52 separately or simultaneously, and the two do not affect each other.

[0145] For example, one of the first operating assembly and the second operating assembly is arranged on the housing 1 along the axial direction of the inner tube 52, and the other is arranged on the housing 1 along a direction intersecting the axial direction of the inner tube 52. Figure 1 As shown, the housing 1 includes a body and an extension portion, the extension portion is tiltedly arranged on the body, so that the housing 1 is Y-shaped, the first operating component is arranged on the body, the first operating end extends out of the body, the second operating component is arranged on the extension portion, the second operating end extends out of the extension portion. The second operating component is located between the first operating component and the fine-tuning device.

[0146] like Fig.13 , Fig.14 , Fig.15 , Fig.16 and Fig.17 As shown, the adjustable bend assembly also includes an adjustable bend tube 31 and a traction wire 32. The adjustable bend tube 31 is sleeved outside the torsion tube 53. The distal end of the torsion tube 53 extends out of the distal end of the adjustable outer tube 51. The proximal end of the adjustable bend tube 31 passes through the inner hole of the second fixing seat 72 and is fixed on the inner hole of the first fixing seat 71. The traction wire 32 is made of a bendable material, and its distal end is fixed on the outer wall of the adjustable bend tube 31. Its proximal end is radially bent along the inner tube 52, passes through the part of the adjustable bend tube extending outside the proximal end of the outer tube, and then extends outward and is connected to the second operating assembly. For example, the traction wire is a steel wire.

[0147] The second operating assembly includes a driving member 33 and a sliding block 34 rotatably disposed in the housing 1, wherein the driving member 33 is a first screw rod, and the sliding block 34 is fitted on the outer thread of the first screw rod, and the proximal end of the traction wire is fixed on the sliding block 34. By driving the first screw rod to rotate, the sliding block 34 is made to move linearly along the axial direction of the first screw rod, thereby driving the proximal end of the traction wire to move, thereby driving the proximal end of the adjustable bending tube 31, the torsion tube 53 and the proximal end of the inner tube 52 to bend to a desired angle. A third rotating cap 35 is connected to the second operating end of the second operating assembly, for example, an annular boss is provided on the end of the first screw rod, the annular boss extends out of the extension portion, and the third rotating cap 35 is sleeved on the annular boss and connected to the annular boss by a buckle.

[0148] A guide member and a guide slot 36 are provided along the sliding direction of the sliding block 34. The guide member is provided on the housing 1, and the guide slot 36 is provided on the sliding block 34. The guide member can be slidably embedded in the guide slot 36, so that the sliding block 34 will not deviate during the sliding process, and the sliding block 34 and the first screw rod are prevented from rotating synchronously. For example, the guide member is a guide protrusion 421, and the guide protrusion 421 can be slidably embedded in the slot. Alternatively, the slot is provided on the housing 1, and the guide member is provided on the outer peripheral wall of the sliding block 34. Of course, the positions of the guide member and the guide slot can be reversed.

[0149] like Fig.12As shown, the proximal end of the adjustable elbow 31 passes through the second fixing seat 72 and is sealed and fixed to the inner hole of the first fixing seat 71 through the first sealing member; along the radial direction of the inner tube 52, a fifth mounting hole is provided on the first fixing seat 71, and a sixth mounting hole communicating with the fifth mounting hole is provided on the housing 1 at a position corresponding to the fifth mounting hole; Fig.14 and Fig.15 As shown, as shown, a first one-way valve 61 is arranged in the fifth mounting hole and the sixth mounting hole, the fluid outlet of the first one-way valve 61 is connected to the inner cavity of the adjustable elbow 31, and its fluid inlet is located outside the shell 1.

[0150] The proximal end of the second fixed seat 72 is fixedly connected to the distal end of the first fixed seat 71; along the radial direction of the inner tube 52, the second fixed seat 72 is provided with a seventh mounting hole, and the shell 1 is provided with an eighth mounting hole connected with the seventh mounting hole at a position corresponding to the seventh mounting hole; the second one-way valve 62 is arranged in the seventh mounting hole and the eighth mounting hole, and the fluid outlet of the second one-way valve 62 is connected with the inner cavity of the outer tube 51, and its fluid inlet is located outside the shell 1.

[0151] When using the above-mentioned delivery system, it is necessary to first discharge the air or bubbles in the outer tube 51 outside the human body, at which time the second one-way valve 62 is opened, and saline is injected into the inlet end of the second one-way valve 62, and the saline enters the inner cavity of the outer tube 51 through the outlet end to empty the bubbles in the outer tube 51, and after the bubbles are emptied, the first one-way valve 61 is closed. Similarly, the first one-way valve 61 is opened, and saline is injected into the inlet section of the first one-way valve 61, and the saline enters the inner cavity of the adjustable elbow 31 through the outlet end to empty the bubbles in the inner cavity of the adjustable elbow 31, and after the bubbles are emptied, the first one-way valve 61 is closed.

[0152] In addition, if Figure 9b As shown, the valve delivery system also includes two claws 54, namely a first claw and a second claw. The first claw is sleeved on the distal end of the torsion tube 53 and the inner tube 52, and the second claw is sleeved on the distal end of the inner tube 52. Both claws are located in the outer tube 51, and the inner tube 52 between the two claws is provided for the valve sleeve to be installed. Before the valve surgery, the valve needs to be sleeved on the inner tube 52 in advance, and the axial ends of the valve are respectively abutted on the first claw and the second claw, and the valve is in a folded state and is accommodated in the inner cavity of the outer tube 51. When the doctor needs to perform a valve replacement surgery on the patient, the use process of the delivery system is as follows:

[0153] First, the distal end of the outer tube 51 of the entire conveying system is inserted into the position in the human body where the valve needs to be replaced. During this process, the doctor pushes the shell 1 as a whole into the position in the human body where the valve needs to be replaced. During this process, the shell 1 as a whole will not be inserted into the human body.

[0154] First, the transfer mechanism 2 drives the outer tube 51 to retract toward the proximal end, releasing the valve from the inner cavity of the outer tube 51; specifically:

[0155] exist Fig.10 In the process, the second rotating cap 23 is rotated to drive the rotating body 21 to rotate, and then the sliding member 22 is driven to drive the outer tube 51 fixed thereon to gradually retract toward the proximal end, until the proximal end of the outer tube 51 exposes the entire valve, and the retracted valve is released instantly; during this process, the above-mentioned torsion tube 53, adjustable bend tube 31, and inner tube 52 do not move with the outer tube 51 to complete the release process of the valve. During the process of the outer tube 51 retracting to release the valve, the proximal end of the outer tube 51 slides on the inner hole of the above-mentioned second fixing seat 72.

[0156] Secondly, the bending angles of the inner tube 52 and the torsion tube 53 are roughly adjusted by the adjustable bending mechanism, specifically:

[0157] like Fig.13 , Fig.14 and Fig.15 As shown, the third rotating cap 35 is rotated to drive the first screw to rotate so that the sliding block 34 is Fig.13 The center direction slides upward, driving the proximal end of the traction wire to move upward. Since the proximal end of the adjustable bend tube 31 is fixed in the first fixed seat 71 and the distal end is sleeved outside the torsion tube 53, it is equivalent to that the axial position of the adjustable bend tube 31 is fixed on the shell 1. Therefore, the proximal end of the traction wire slides upward, which can drive the proximal end of the adjustable bend tube 31 to deviate from the initial axis of the inner tube 52 and bend, thereby driving the inner tube 52 and the proximal ends of the adjustable bend tube 31 to deviate from their axes and bend as a whole, and finally driving the valve to bend to the required angle until the bending angle reaches the requirement. The rotation of the third rotating cap 35 is stopped, and the sliding block 34 is kept on the first screw to keep the valve at the adjusted bending angle. During this process, although the proximal end of the outer tube 51 retracts, the proximal end of the outer tube 51 bends as a whole along with the proximal end of the adjustable outer tube 51.

[0158] Afterwards, the fine-tuning device is used to adjust the axial displacement of the valve, and then the circumferential rotation displacement of the valve is adjusted, specifically:

[0159] Initially, the distal end of the linkage member 43 is locked on the locking member 45 and is restrained against rotation on the second protrusion 171 of the anti-rotation seat 17, in the first locking state, and the first rotating cap is in the first state, such as Figure 3b The status shown in .

[0160] First, if Figure 6As shown, when the first rotating cap rotates, the transition piece 42 is driven to rotate synchronously, and the motion conversion piece 44 threadedly engaged with the transition piece 42 slides on the internal thread of the transition piece 42 toward its proximal end or distal end, thereby fine-tuning the axial displacement of the valve on the inner tube until the axial position of the valve on the inner tube 52 is at the valve position that needs to be treated in the human body.

[0161] Afterwards, the linkage component 43 switches from the first locking state to the second locking state, and the first rotating cap switches from the first state to the second state. Figure 3b In the process, the button on the locking member 45 is pressed downward to overcome the blocking of the biasing force of the return spring, and the first protrusion 452 is withdrawn from the first slot 435 downward. At this time, the second protrusion 171 is still inserted in the second slot, and the linkage member 43 can slide axially on the inner tube 52 relative to the locking member 45; because the first rotating cap and the transition member are anti-rotationally slidably connected, at this time, Figure 2a The first rotating cap is pushed to the right, the distance between the first rotating cap and the transition piece 42 increases, the tension spring between the two releases energy, and drives the first rotating cap to slide toward the right, and the toggle body 412 on the first rotating cap acts on the matching protrusion 4341, driving the matching body and the linkage component 43 to slide toward the right as a whole, wherein the matching protrusion 4341 slides in the third give way hole 203 of the shell until the second protrusion 171 on the anti-rotation seat 17 exits the second slot, and the retracted and deformed elastic pin corresponding to the second slot is reset, and the distal end of the linkage component 43 is completely withdrawn from the inner hole of the locking member. At this time, the button is released, and the locking member 45 is reset under the reset bias force, and the second protrusion remains in the inner hole of the locking member. At the same time, the proximal end of the linkage component 43 is directly plugged into the third protrusion 422 of the transition piece 42, and the third protrusion 422 is plugged into the third slot formed by the elastic pin, and an anti-rotation and slidable lock is formed between the linkage component 43 and the transition piece 42, stopping the pushing of the first rotating cap.

[0162] Afterwards, the first rotating cap starts to rotate. Since the first rotating cap and the transition piece are slidably connected to prevent rotation, the first rotating cap and the matching protrusion are rotatably connected to prevent sliding, and the matching body and the linkage component are rotatably connected to prevent sliding, the first rotating cap drives the transition piece 42 to rotate. Since the linkage component is locked on the transition piece in an anti-rotation manner, and since the linkage component 43 is connected to the torsion tube 53 in an anti-rotation manner, the linkage component, the torsion tube and the inner tube are synchronously driven to rotate. Then, the motion conversion component 44 and the transition piece 42 on the torsion tube 53 rotate synchronously, and there is no relative movement between the two. During this process, the first annular groove of the first rotating cap rotates on the matching protrusion 4341, and the linkage component 43 rotates relative to the pull ring 4342. The pull ring 4342 and the matching protrusion 4341 remain in a stationary state on the shell until the rotation angle of the valve on the inner tube 52 is adjusted to the right position, so that the artificial valve rotates to almost completely fit the position of the valve to be replaced in the human body, and the rotation of the first rotating cap is stopped.

[0163] After the artificial valve is fixed in the human body, the delivery system can be withdrawn from the human body. In the opposite process to the above, the first rotating cap switches from the second state to the first state, and the linkage component 43 switches from the second locking state to the first locking state. Specifically:

[0164] exist Figure 2a , Figure 2b and Figure 3b The first rotating cap is pushed toward the left, and the first rotating cap drives the matching body and the linkage component 43 to slide as a whole relative to the transition piece toward the direction of the anti-rotation seat 17, and the third slot at the proximal end of the linkage component 43 is separated from the third protrusion 422 on the transition piece 42, and the retracted spring pin on the proximal end of the linkage component 43 is reset. At the same time, the button is pressed downward again, and the distal end of the linkage component 43 slides into the inner hole of the locking member 45. Since the second protrusion 171 is located in the inner hole of the locking member 45, the second protrusion 171 is inserted into the spring pin on the distal end of the linkage component 43 so that the second protrusion 171 is inserted into the second slot formed by the spring pin. At this time, the button is released, and under the reset bias force of the reset spring, the first protrusion 452 is clamped in the first slot 435, so that the locking member 45 is locked with the linkage component 43, and the linkage component 43 is switched from the second locked state to the first locked state.

[0165] The first rotating cap is then rotated to drive the transition piece 42 and the motion conversion piece 44 to retract toward the proximal end until the inner tube 52 is completely separated from the valve.

[0166] After that, the adjustable bending mechanism is activated to rotate the third rotating cap 35, so that the proximal end of the adjustable bending tube 31, the torsion tube 53 and the proximal end of the inner tube 52 are restored from the bent state to the non-bent state; finally, the second rotating cap 23 of the transfer mechanism 2 is rotated, and the outer tube 51 extends toward the distal end, so that the proximal end of the outer tube 51 is sleeved outside the proximal end of the inner tube 52; finally, the doctor acts on the shell 1 and pulls it out of the human body as a whole.

[0167] Example 2

[0168] This embodiment provides a valve delivery system, which is different from the valve delivery system provided in Embodiment 1 in that, for example, the matching body can also be connected to the operating component in a non-slip and rotatable manner in other ways. For example, the matching protrusion is connected to the inner wall surface of the operating component through a bearing; or the matching protrusion is not provided, and the pull ring is directly provided on the inner wall of the operating component through a bearing. In this case, the toggle body and the matching body are combined into one, and the whole is a bearing.

[0169] Alternatively, as a further variation, when a mating body and a toggle body are provided, the pull ring of the mating body is directly fixed on the linkage component, and correspondingly, the mating protrusion is rotatably provided on the shell, or the mating protrusion avoids the shell and is directly inserted into the first annular groove. In the first locking state, the operating component can still rotate relative to the mating protrusion; in the second locking state, when the operating component rotates, the linkage component and the mating body are synchronously driven to rotate.

[0170] Alternatively, as a further variation, the matching body and the toggle portion are not provided, and the outer wall surface of the linkage component and the inner wall of the operating component are directly connected via a bearing.

[0171] Example 3

[0172] The present embodiment provides a valve delivery system, which is different from any valve delivery system provided in Embodiment 1 and Embodiment 2 in that: the fine-tuning device is set in this embodiment. The operating component and the linkage part are anti-rotationally and slidably connected, and the operating component and the transition piece are anti-slidingly connected. In this case, the above-mentioned motion conversion component is not required. The torsion tube is directly fixed in the inner hole of the transition piece, and the linkage component and the torsion tube are still anti-rotationally and slidably connected.

[0173] In the first state, the operating component directly drives the transition piece to slide synchronously toward the proximal end or the distal end to directly drive the torsion tube to slide, thereby fine-tuning the axial displacement of the inner tube. Correspondingly, the linkage component is in the first locking state, and the distal end of the linkage component is locked on the housing through the cooperation of the first protrusion and the first slot, without the need to set the support column, the second protrusion and the second slot in Example 1; in the second locking state, it is necessary to apply a driving force toward the transition piece to the linkage component separately, such as providing a separate operating button on the housing to directly drive the linkage component to slide, so that the linkage component slides toward the transition piece, and the proximal end of the linkage component and the distal end of the transition piece still cooperate with the third protrusion 422 and the third slot to form an anti-rotation connection. In the second state, since the operating component and the linkage component are anti-rotationally connected, the operating component can be directly rotated to drive the linkage component, the transition piece and the torsion tube to rotate synchronously, thereby fine-tuning the circumferential displacement of the inner tube. That is, in the second state, the driving force of the linkage component does not come from the operating component.

[0174] In addition, the first blocking force in the locking mechanism may not be the reset bias force in Example 1, but a separate first blocking force may be provided, such as no reset spring, or when a reset spring is provided, after the first protrusion is plugged into the first slot, other detachable fixing structures are used to lock the locking member and the linkage member, such as a screw or bolt nut assembly, or a buckle structure, so that in the first locking state, the first blocking force is applied to the linkage member. In the second locking state, the first blocking force is cancelled, and the linkage member can slide relative to the locking member.

[0175] That is, in the first locking state, the linkage component 43 is locked on the housing 1 by the first blocking force applied by the locking mechanism, and the driving mechanism drives the inner tube 52 to slide relative to the linkage component 43; in the second locking state, the first blocking force is cancelled, the linkage component 43 is driven by the pushing force to move and lock on the driving mechanism, and is driven by the driving mechanism to drive the inner tube 52 to rotate synchronously; in the first locking state, the pushing force is cancelled.

[0176] In addition, the torsion tube in the fine-tuning device may not be provided, and the linkage component and the transition piece may be directly connected and matched with the inner tube.

[0177] In addition, the transition piece and the linkage part may be locked in other ways in the second state, such as providing a first magnet and a second magnet on the surfaces facing each other of the transition piece and the linkage part, respectively, and locking them by the magnetic attraction force of the two magnets. Furthermore, the above-mentioned anti-rotation mechanism may not be provided.

[0178] Example 4

[0179] This embodiment provides a valve delivery system, which is different from any valve delivery system provided in Embodiment 1, Embodiment 2, and Embodiment 3 in that:

[0180] The main body and the extension portion of the shell may also be coaxially arranged, and may also be in other shapes as long as the operating ends of the transfer mechanism and the adjustable bending mechanism do not affect each other.

[0181] As a further variant implementation, the second operating component of the adjustable bending mechanism may also include only the driving member 33, but the driving member is a rotating wheel at this time, and the proximal end of the traction wire is wound around the rotating wheel. A rotating shaft is arranged in the inner hole of the rotating wheel, and one end of the rotating shaft extends out of the shell and is fixed with a rotating cap. Or it may be other operating components, which only need to drive the traction wire to move. As a variant, the adjustable bending component may include only the traction wire, without the adjustable bending tube, and the distal end of the traction wire is fixed on the outer wall of the inner tube.

[0182] Example 5

[0183] This embodiment provides a valve delivery system, which is different from any valve delivery system provided in Embodiment 1, Embodiment 2, Embodiment 3, and Embodiment 4 in that:

[0184] The transfer mechanism can also be other mechanisms, such as a meshing structure of a gear and a rack, by rotating the gear, the rack is fixedly connected to the outer tube, thereby driving the outer tube to slide axially; or other structures that can perform telescopic motion or reciprocating sliding are also acceptable.

[0185] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A valve delivery system, characterized in that: It comprises a housing (1), an inner tube (52) arranged in the housing (1), and a fine-tuning device arranged on the housing (1); the fine-tuning device comprises A driving mechanism, the driving mechanism comprising an operating component (41) movably arranged on the housing (1) and capable of switching between a first state and a second state, and a transition piece (42) sleeved outside the inner tube (52), the transition piece (42) being arranged in linkage with the inner tube (52); Locking mechanism; A linkage component (43) is movably arranged on the housing (1) and can be switched between a first locking state and a second locking state; the linkage component (43) is slidably and anti-rotationally sleeved outside the inner tube (52); wherein, in the first state, the operating component (41) and the transition piece (42) move synchronously to drive the inner tube (52) to slide, and the linkage component (43) is in the first locking state; in the second state, the linkage component (43) is driven by the pulling force to move to lock on the transition piece (42), and then driven by the operating component (41) to drive the inner tube (52) to rotate and is in the second locking state; In the first locking state, the linkage component (43) is locked on the housing (1) by the first blocking force applied by the locking mechanism, and the driving mechanism drives the inner tube (52) to slide relative to the linkage component (43); in the second locking state, the first blocking force is cancelled, the linkage component (43) is driven by the shifting force to move and lock on the driving mechanism, and is driven by the driving mechanism to drive the inner tube (52) to rotate synchronously; in the first locking state, the shifting force is cancelled.

2. The valve delivery system according to claim 1, characterized in that: The locking mechanism comprises a locking member (45) arranged on the housing (1), and the locking member (45) applies the first blocking force to the linkage member (43) through telescopic movement; In a first locking state, the locking member (45) is locked with the linkage member (43); in a second state, the locking member (45) is separated from the linkage member (43); The locking member (45) is subjected to a return biasing force and tends to remain in the first locking state.

3. The valve delivery system according to claim 2, characterized in that: Among the mutually facing surfaces of the locking member (45) and the linkage member (43), at least one first protrusion (452) is provided on one surface, and a first slot (435) capable of engaging with the first protrusion (452) is provided on the other surface; In the first locking state, the first protrusion (452) is plugged into and matched with the first card slot (435); in the second locking state, the first protrusion (452) is separated from the first card slot (435).

4. The valve delivery system according to claim 3, characterized in that: In the first locking state, the locking member (45) is sleeved outside the proximal end of the linkage member (43), one of the first protrusion (452) and the first groove (435) is arranged on the inner wall surface of the locking member (45), and the other is arranged on the outer wall surface of the linkage member (43); the locking member (45) performs telescopic movement along the radial direction of the inner tube.

5. The valve delivery system according to claim 1, characterized in that: The operating component (41) is slidably and rotatably arranged on the housing, and the operating component is anti-rotationally and slidably connected to the transition piece (42); The driving mechanism further comprises a motion conversion member (44) arranged in linkage with the transition member (42), wherein the motion conversion member (44) is fixedly connected to the outside of the inner tube (52) and is used for converting the rotational motion of the transition member into linear sliding; In a first state, the operating component (41) drives the transition piece (42) to rotate, thereby driving the motion conversion component (44) to slide on the transition piece (42); the distal end of the linkage component (43) is locked on the locking component (45), and the proximal end thereof faces the transition piece (42); In the second state, the operating component (41) slides relative to the transition component (42) to apply a pushing force to the linkage component, and the linkage component is driven by the pushing force to slide toward the transition component (42) and lock on the transition component (42), and is then driven by the synchronous rotation of the operating component (41) and the transition component (42) to drive the inner tube (52) to rotate.

6. The valve delivery system according to claim 5, characterized in that: The linkage component (43) is provided with a matching body; the operating component (41) is provided with a shifting body (412); The toggle body is rotatably and anti-sliply connected to the matching body. In the second state, the operating component slides through the toggle body to apply a toggle force to the matching body; the matching body is anti-sliply and rotatably arranged on the linkage component; The matching body is driven by the pulling force to cause the linkage component to slide synchronously relative to the housing; the linkage component is driven by the synchronous rotation of the operating component (41) and the transition component (42) to rotate relative to the matching body.

7. The valve delivery system according to claim 6, characterized in that: The matching body includes an annular pull ring and a matching protrusion radially protruding from the pull ring; the distal end of the operating component is sleeved outside the proximal end of the shell, and the toggle body is a first annular groove provided on the inner wall surface of the operating component; the linkage component is located in the shell, and the pull ring is rotatably sleeved in a second annular groove on the outer periphery of the linkage component; the matching protrusion passes through a third clearance hole on the shell and is rotatably inserted in the second annular groove, and slides in the third clearance hole under the toggle force; and / or The proximal end of the transition piece is arranged in the proximal inner cavity of the shell and is rotatably and non-sliply arranged on the shell, and the distal end of the transition piece is arranged in the inner cavity of the operating component.

8. The valve delivery system according to any one of claims 5 to 7, characterized in that: The motion conversion member is a first fixing nut, the transition member is a threaded tube, the first fixing nut is sleeved and fixed on the outer wall of the inner tube, and the first fixing nut is threadably matched with the inner wall of the threaded tube; and / or It also includes at least one first elastic member arranged between the transition member (42) and the operating member (41); in a second state, the first elastic member releases energy to apply a biasing force to the operating member (41) to drive the linkage member (43) to slide toward the transition member (42); and / or It also comprises an anti-rotation mechanism arranged in the housing (1) and used for arranging the linkage component on the housing in an anti-rotation manner in a first locking state.

9. The valve delivery system according to claim 8, characterized in that: The anti-rotation mechanism comprises a rotation stop seat (17) arranged in the housing, the linkage component (43) being located between the rotation stop seat and the transition member (42); and at least one second protrusion extending in the axial direction on one end surface of the linkage component (43) and the rotation stop seat facing each other, and a second slot (4311) on the other end surface corresponding to the second protrusion and capable of plugging and matching; In the first locking state, the second protrusion is inserted into the second locking groove (4311), and in the second locking state, the second protrusion is separated from the second locking groove (4311).

10. The valve delivery system according to claim 9, characterized in that: At least one third protrusion (422) is provided on one of the end surfaces of the linkage component (43) and the transition component (42) facing each other, and a third slot (4321) corresponding to and pluggable with the third protrusion (422) is provided on the other end surface; In the first locking state, the third protrusion (422) is separated from the third card slot (4321); in the second locking state, the third protrusion (422) is inserted into the third card slot (4321).

11. The valve delivery system according to claim 10, characterized in that: The end surface on which the second protrusion or the third protrusion (422) is not provided is provided with a plurality of linear elastic members (433) arranged on the same circumference; In corresponding locking states, at least one linear elastic member (433) is retracted and deformed by the squeezing force of the corresponding protrusion, and a slot is formed between the retracted linear elastic member (433) and its adjacent non-retracted linear elastic member (433) for plugging and mating with the protrusion.

12. The valve delivery system according to any one of claims 1 to 4, characterized in that: The fine-tuning device further comprises a torsion tube (53) fixedly sleeved outside the inner tube (52), the proximal end and the distal end of the inner tube (52) respectively extending outside the proximal end and the distal end of the torsion tube (53); the linkage component (43) is arranged on the inner tube (52) by being slidably and rotationally prevented from sleeved outside the torsion tube (53); in a first locking state, the driving mechanism drives the inner tube (52) to slide by driving the torsion tube (53), and in a second locking state, the linkage component (43) drives the inner tube (52) to rotate by driving the torsion tube (53); and / or The valve delivery system further includes The outer tube (51) is sleeved outside the inner tube (52) and is located inside the housing (1); the distal end of the inner tube (52) extends outside the outer tube (51); and the fine-tuning device is arranged on a portion of the inner tube (52) extending outside the proximal end of the outer tube (51); The transfer mechanism (2) is arranged on the shell (1), and comprises a first operating component for driving the outer tube (51) to slide back and forth along the axial direction relative to the inner tube (52), wherein the first operating end of the first operating component is exposed outside the shell (1).

13. The valve delivery system according to claim 12, characterized in that: It also includes an adjustable bending mechanism arranged on the housing (1), which includes an adjustable bending component arranged outside the inner tube (52) and located inside the outer tube (51), the distal end of the adjustable bending component is fixed to the inner tube (52), and the proximal end thereof extends out of the proximal end of the outer tube (51) and bends and extends radially along the inner tube (52); and a second operating component connected to the proximal end of the adjustable bending component; The second operating component is independent of the first operating component and is used to drive the adjustable bending component to bend to a desired angle; the first operating end of the first operating component and the second operating end of the second operating component are both exposed from the shell.

14. The valve delivery system according to claim 13, characterized in that: One of the first operating assembly and the second operating assembly is arranged on the housing (1) along the axial direction of the inner tube (52), and the other is arranged on the housing (1) along a direction intersecting the axial direction of the inner tube (52).

15. The valve delivery system according to claim 13 or 14, characterized in that: The second operating component comprises a driving member (33) rotatably arranged on the housing (1), the proximal end of the driving member (33) serving as the second operating end, and the proximal end of the adjustable bending component being connected to the distal end of the driving member (33); the driving member (33) drives the proximal end of the adjustable bending component to move by rotating; and / or The first operating component includes A rotating body (21) rotatably arranged on the inner wall of the shell (1), the distal end of the rotating body (21) being bent into a clearance hole on the shell (1) and serving as the first operating end; A sliding member (22) is threadably engaged in the rotating body; the sliding member (22) is fixedly sleeved on the outer tube (51); and / or The adjustable bending component comprises An adjustable elbow (31) is sleeved on the inner tube (52) and is located inside the outer tube (51), and the proximal end of the adjustable elbow (31) extends out of the proximal end of the outer tube (51); and The traction wire (32) is made of a bendable material, with its distal end fixed on the adjustable curved tube (31), and its proximal end radially bent along the inner tube (52) and passing through the portion of the adjustable curved tube extending outside the proximal end of the outer tube, then extending outward and connected to the second operating component.

16. The valve delivery system according to claim 15, characterized in that: It also includes a first fixing seat (71) disposed in the housing (1), and the proximal end of the adjustable elbow (31) is sealed and fixed to the inner hole of the first fixing seat (71) through a first sealing member; A fifth mounting hole is provided on the first fixing seat (71) along the radial direction of the inner tube (52), and a sixth mounting hole communicating with the fifth mounting hole is provided on the housing (1) at a position corresponding to the fifth mounting hole; and A first one-way valve (61) is arranged in the fifth mounting hole and the sixth mounting hole, wherein the fluid outlet of the first one-way valve (61) is connected to the inner cavity of the adjustable elbow (31), and the fluid inlet thereof is located outside the housing (1).

17. The valve delivery system according to claim 16, characterized in that: It also includes a second fixing seat (72) disposed in the housing (1), the proximal end of the outer tube (51) being sealed by a second sealing member and slidably disposed on an inner hole of the second fixing seat (72); The proximal end of the second fixing seat (72) is fixedly connected to the distal end of the first fixing seat (71), and the proximal end of the adjustable elbow (31) passes through the second fixing seat (72) and is fixed on the first fixing seat (71); The second fixing seat (72) is provided with a seventh mounting hole along the radial direction of the inner tube (52), and the housing (1) is provided with an eighth mounting hole in communication with the seventh mounting hole at a position corresponding to the seventh mounting hole; A second one-way valve (62) is arranged in the seventh mounting hole and the eighth mounting hole, wherein the fluid outlet of the second one-way valve (62) is connected to the inner cavity of the outer tube (51), and the fluid inlet thereof is located outside the shell (1).

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