CN111714251A - Valve delivery system - Google Patents

Valve delivery system Download PDF

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Publication number
CN111714251A
CN111714251A CN202010692873.9A CN202010692873A CN111714251A CN 111714251 A CN111714251 A CN 111714251A CN 202010692873 A CN202010692873 A CN 202010692873A CN 111714251 A CN111714251 A CN 111714251A
Authority
CN
China
Prior art keywords
linkage
operating
locking
shell
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010692873.9A
Other languages
Chinese (zh)
Inventor
李阳
陈晓
黄韬
时楠
刘冰冰
王雪雪
位诗雨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Hanling Medical Devices Co ltd
Shanghai Kangdelai Enterprise Development Group Co Ltd
Original Assignee
Shanghai Hanling Medical Devices Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Hanling Medical Devices Co ltd filed Critical Shanghai Hanling Medical Devices Co ltd
Priority to CN202010692873.9A priority Critical patent/CN111714251A/en
Publication of CN111714251A publication Critical patent/CN111714251A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
    • A61F2/2466—Delivery devices therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2427—Devices for manipulating or deploying heart valves during implantation

Abstract

The invention discloses a valve conveying system, which comprises a shell, an inner tube and a fine adjustment device, wherein the fine adjustment device comprises a driving mechanism, a locking mechanism and a linkage part, the linkage part is switched between a first locking state and a second locking state, in the first locking state, as the linkage part is connected with the inner tube in a sliding and anti-rotating manner, the linkage part is locked on the shell by a first blocking force of the locking mechanism, the driving mechanism drives the inner tube to slide relative to the linkage part, and the fine adjustment of the axial displacement of the inner tube is realized; in the second locking state, the first blocking force applied to the linkage part by the locking mechanism is cancelled, the linkage part can move relative to the shell, is locked with the driving mechanism under the action of stirring force, and rotates under the driving of the driving mechanism to drive the inner pipe to rotate, so that the circumferential displacement of the inner pipe is adjusted, and the axial sliding and circumferential rotating displacement of the inner pipe can be adjusted by only arranging one driving mechanism.

Description

Valve delivery system
Technical Field
The invention relates to the technical field of medical instruments, in particular to a valve conveying system.
Background
The heart valve disease is a common heart disease in China, and the replacement of the artificial heart valve is a main means and the most effective way for treating the heart valve disease. When performing a prosthetic heart valve replacement, which requires an interventional procedure, a valve delivery system is used to deliver a valve stent through the center of the valve to be treated.
For example, a prior art prosthetic heart valve delivery system includes an inner tube, an outer tube, a housing, an adjustable bending mechanism, and a transfer mechanism. The outer tube is sleeved outside the inner tube, and the near end and the far end of the inner tube respectively correspond to the near end and the far end which can extend out of the outer tube. The transfer mechanism is used for driving the outer pipe to slide in a reciprocating manner in the axial direction of the outer pipe relative to the inner pipe, and comprises a knob which is sleeved outside the outer pipe and can be rotationally arranged on the shell and a threaded pipe which is fixed at the far end of the knob, the internal thread of the threaded pipe is in threaded fit with a second screw rod, and the second screw rod is sleeved on the outer pipe and is fixedly connected with the outer pipe; the adjustable bending mechanism is used for driving the inner tube to bend for a required angle relative to the axis of the inner tube, so that the valve is attached to the position of the valve, which needs to be treated, of a human body. The adjustable bending mechanism comprises an adjustable bent pipe sleeved outside the inner pipe and positioned inside the outer pipe, a first screw fixed on the near end of the knob, and a linkage component, wherein the far end of the linkage component is fixed in a groove on the outer wall of the adjustable bent pipe, the near end of the linkage component extends along the axial direction of the inner pipe and bends radially to extend out of the outer pipe, and the near end of the traction wire is wound on the thread of the linkage component and is matched with the first screw.
According to the valve conveying system with the structure, before a valve replacement operation, the valve is sleeved at the near end of the inner tube in advance and located in the near end of the outer tube, and is in a folded and unreleased state; meanwhile, as the first screw and the linkage part form a second screw structure, the linkage part drives the traction wire to move towards the far end, so as to drive the adjustable bent pipe, the inner pipe and the outer pipe to bend at required angles, and adjust the bending angle of the valve; after the operation is finished, the doctor rotates the knob counterclockwise, the outer tube moves towards the far end relative to the inner tube to reset, meanwhile, the traction wire moves towards the near end, the bending angles of the adjustable bent tube, the inner tube and the outer tube are gradually reduced, the adjustable bent tube, the inner tube and the outer tube are reset to an initial non-bending state, and finally the whole conveying system is pulled out of the body of the patient.
The valve delivery system can only release the valve by moving the outer tube relative to the inner tube and adjust the bending angle of the inner tube so as to adjust the bending angle of the valve. That is, the delivery system can only carry out coarse adjustment on the position of the valve, and cannot carry out fine adjustment on the rotation angle and the axial displacement of the valve after the valve is implanted into a human body, so that the valve can be delivered to the position of the valve to be treated in a more fitting manner, the precision of the delivery valve of the delivery system is low, and the risk of operation failure is increased. In order to solve the technical scheme in the prior art, a rotary driving mechanism and a sliding driving mechanism are respectively arranged in a shell to respectively drive an inner tube, and the rotary driving mechanism needs to be fixed on the sliding mechanism so as to realize fine adjustment of the position of a valve sleeved on the far end of the inner tube. That is, two sets of driving mechanisms must be provided in the valve delivery system to finely adjust the axial and circumferential displacements of the valve, which results in a complex structure of the valve delivery system and a large space occupied in the housing.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that two sets of driving mechanisms must be arranged in the valve delivery system in the prior art to finely adjust the axial and circumferential displacements of the valve, so that the valve delivery system has a complex structure and occupies a large space in the housing.
Therefore, the invention provides a valve conveying system, which comprises a shell, an inner tube arranged in the shell and a fine adjustment device arranged on the shell; the fine adjustment device comprises
A drive mechanism;
a locking mechanism;
the linkage component is movably arranged on the shell in a switching way between a first locking state and a second locking state; the linkage part is sleeved outside the inner pipe in a sliding and anti-rotating manner;
in a first locking state, the linkage part is locked on the shell by a first blocking force exerted by the locking mechanism, and the driving mechanism drives the inner pipe to slide relative to the linkage part; in a second locking state, the first blocking force is cancelled, the linkage part is driven by a dialing force to move so as to be locked on the driving mechanism, and the linkage part is driven by the driving mechanism to drive the inner pipe to synchronously rotate; in the first locking state the toggle force is withdrawn.
Optionally, in the valve delivery system described above, the locking mechanism includes a lock provided on the housing, the lock applying the first blocking force to the linkage component by a telescopic motion;
in a first locking state, the locking piece is locked with the linkage part; in a second state, the locking piece is separated from the linkage part;
the locking member is biased by a return bias to tend to remain in the first locked condition.
Optionally, in the valve delivery system, in the surfaces of the locking member and the linkage component facing each other, one surface is provided with at least one first protrusion, and the other surface is provided with a first clamping groove capable of being in clamping fit with the first protrusion;
in a first locking state, the first protrusion is in insertion fit with the first clamping groove; in a second locked state, the first protrusion is separated from the first card slot.
Optionally, in the valve delivery system described above, the locking piece is sleeved outside the linkage component, one of the first protrusion and the first clamping groove is disposed on an inner wall surface of the locking piece, and the other is disposed on an outer wall surface of the linkage component; the locking piece does telescopic motion along the radial direction of the inner pipe.
Optionally, in the valve delivery system described above, the driving mechanism includes an operating member movably disposed on the housing between a first state and a second state, and a transition member sleeved outside the inner tube, the transition member being disposed in linkage with the inner tube;
in a first state, the operating part and the transition piece move synchronously to drive the inner pipe to slide in a linkage manner, and the linkage part is in a first locking state; in the second state, the operating component moves relative to the transition piece and applies shifting force to the linkage component or applies shifting force to the linkage component from the outside, the linkage component is driven by the shifting force to move so as to be locked on the transition piece, and then the linkage component is driven by the operating component to drive the inner pipe to rotate so as to be in the second locking state.
Optionally, in the valve delivery system described above, the operating member is slidably and anti-rotatably connected to the transition piece; the linkage part is provided with a matching bulge; the operating component is provided with a poking body;
the driving mechanism further comprises a motion conversion piece which is in threaded fit with the transition piece, and the motion conversion piece is fixedly sleeved outside the inner pipe;
in a first state, the operating part drives the transition piece to rotate, the motion conversion piece is driven to slide on the transition piece in a linkage mode, one end of the linkage part is locked on the locking piece, and the other end of the linkage part faces the transition piece;
in a second state, the operating component slides relative to the transition piece, the poking body applies poking force to the matching part to drive the linkage component to slide towards 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.
Optionally, in the valve delivery system described above, the distal end of the operating member is sleeved outside the proximal end outside the linkage member, and the dial body is disposed on the inner wall of the operating member; the matching bulge is arranged on the outer wall surface of the linkage part in a protruding mode, and the matching bulge is embedded into the shifting body;
the transition piece is arranged in the inner cavity of the operation part, inner threads are arranged on the inner wall of the transition piece, and outer wall surfaces of the motion conversion pieces are provided with outer threads matched with the inner threads.
Optionally, the valve delivery system described above, further comprising at least one first resilient member disposed between the transition member and the operating member;
in a second state, the first elastic piece releases energy to apply a biasing force to the operating member to drive the linkage member to slide toward the transition piece.
Optionally, the valve delivery system further comprises a rotation stop seat disposed in the housing, and the linkage member is located between the rotation stop seat and the transition piece;
at least one second protrusion is arranged on one end face of the end faces of the linkage component and the rotation stopping seat, and second clamping grooves which correspond to the second protrusions in a one-to-one manner and are matched with the second protrusions in an inserting manner are arranged on the other end face of the end faces;
at least one third bulge is arranged on one end face of the end faces of the linkage part and the transition piece, which face each other, and third clamping grooves which correspond to the third bulges in a one-to-one manner and are matched with the third bulges in an inserting manner are arranged on the other end face;
in a first locking state, the second protrusion is inserted into the second clamping groove, so that the linkage part is limited on the shell in a rotation-proof manner, and the third protrusion is separated from the third clamping groove;
in a second locking state, the third protrusion is inserted into the third clamping groove, so that the linkage part is locked on the transition piece, and the second protrusion is separated from the second clamping groove.
Optionally, in the valve delivery system, the end surface not provided with the second protrusion or the third protrusion is provided with a plurality of linear elastic members arranged on the same circumference;
and under the respective locking state, at least one linear elastic piece retracts and deforms under the extrusion force of the corresponding protrusion, and a clamping groove is formed between the retracted linear elastic piece and the adjacent non-retracted linear elastic piece in a surrounding manner and is used for the insertion and matching of the protrusion.
Optionally, in the valve delivery system described above, the fine adjustment device further includes a torsion tube fixedly sleeved outside the inner tube, and the proximal end and the distal end of the inner tube respectively extend out of the proximal end and the distal end of the torsion tube;
the linkage part is sleeved outside the torsion tube through a slidable and anti-rotation manner and is arranged on the inner tube;
in the first locking state, the driving mechanism drives the inner tube to slide by driving the torsion tube, and in the second locking state, the linkage part drives the inner tube to rotate by driving the torsion tube to rotate.
Optionally, the valve delivery system described above, further comprising
The outer pipe is sleeved outside the inner pipe and is positioned in the shell; the far end of the inner tube extends out of the outer tube; the fine adjustment device is arranged on the part of the inner tube, which extends out of the near end of the outer tube;
the transfer mechanism is arranged on the shell and comprises a first operating assembly used for driving the outer pipe to slide in a reciprocating mode relative to the inner pipe along the axial direction of the inner pipe, and a first operating end of the first operating assembly is exposed out of the shell.
Optionally, the valve delivery system further includes an adjustable bending mechanism disposed on the housing, and including an adjustable bending component disposed outside the inner tube and inside the outer tube, a distal end of the adjustable bending component being fixed to the inner tube, and a proximal end of the adjustable bending component extending out of the proximal end of the outer tube and bending and extending along a radial direction of the inner tube; and a second operating assembly connected to the proximal end of the adjustable bending assembly;
the second operating assembly is independent of the first operating assembly and is used for driving the adjustable bending assembly to bend by a required angle; the first operating end of the first operating assembly and the second operating end of the second operating assembly are exposed out of the shell.
Optionally, in the valve delivery system, one of the first operating assembly and the second operating assembly is disposed on the housing along an axial direction of the inner tube, and the other is disposed on the housing along a direction intersecting with the axial direction of the inner tube.
Optionally, in the valve delivery system described above, the housing includes a body extending axially along the inner tube and an extension fixed to the body in an intersecting manner;
the second operating assembly is arranged on the extending part, the second operating end extends out of the extending part, the first operating assembly and the fine adjustment device are arranged on the body, the first operating end is arranged on the outer wall of the body, and the operating end of a driving mechanism of the fine adjustment device is positioned outside the body;
the second operating assembly is located between the first operating assembly and the fine adjustment device.
Optionally, in the valve delivery system, the second operating assembly includes a driving member rotatably disposed on the housing, a proximal end of the driving member serves as the second operating end, and a proximal end of the adjustable bending assembly is connected to a distal end of the driving member;
the driving piece drives the proximal end of the adjustable bending component to move through rotation.
Optionally, in the valve delivery system, the adjustable bending assembly comprises
The adjustable bent pipe is sleeved on the inner pipe and is positioned in the outer pipe, and the near end of the adjustable bent pipe extends out of the near end of the outer pipe; and
and the traction wire is made of a bendable material, the distal end of the traction wire is fixed on the adjustable bent pipe, and the proximal end of the traction wire extends outwards after passing through a part of the adjustable bent pipe, which extends out of the proximal end of the outer pipe, along the radial direction of the inner pipe and is connected to the second operating assembly.
Optionally, the valve delivery system further includes a first fixing seat disposed in the housing, and the proximal end of the adjustable elbow is sealingly fixed to an inner hole of the first fixing seat through a first sealing element;
a fifth mounting hole is formed in the first fixing seat along the radial direction of the inner pipe, and a sixth mounting hole communicated with the fifth mounting hole is formed in the position, corresponding to the fifth mounting hole, of the shell; and
and a first one-way valve arranged in the fifth mounting hole and the sixth mounting hole, wherein a fluid outlet of the first one-way valve is communicated with the inner cavity of the adjustable elbow pipe, and a fluid inlet of the first one-way valve is positioned outside the shell.
Optionally, the valve delivery system further includes a second fixing seat disposed in the housing, and the proximal end of the outer tube is sealed by a second sealing element and slidably disposed on an inner hole of the second fixing seat;
the near end of the second fixed seat is fixedly connected with the far end of the first fixed seat, and the near end of the adjustable bent pipe penetrates through the second fixed seat and then is fixed on the first fixed seat;
the second fixing seat is provided with a seventh mounting hole along the radial direction of the inner pipe, and the shell is provided with an eighth mounting hole communicated with the seventh mounting hole at a position corresponding to the seventh mounting hole;
and a second one-way valve arranged in the seventh mounting hole and the eighth mounting hole, wherein a fluid outlet of the second one-way valve is communicated with the inner cavity of the outer tube, and a fluid inlet of the second one-way valve is positioned outside the shell.
Optionally, the valve delivery system as described above, the first operating assembly comprising
The rotating body is rotatably arranged on the inner wall of the shell, and the far end of the rotating body is bent into the yielding hole in the shell and serves as the first operating end;
a slider screw-fitted in the rotating body; the sliding piece is fixedly sleeved on the outer pipe.
The technical scheme of the invention has the following advantages:
1. the invention provides a valve conveying system, which comprises a shell, an inner tube arranged in the shell and a fine adjustment device arranged on the shell; the fine adjustment device comprises a driving mechanism, a locking mechanism and a linkage part, and the linkage part can be movably arranged on the shell in a switching way between a first locking state and a second locking state; the linkage part is sleeved outside the inner pipe in a sliding and anti-rotating manner; in a first locking state, the linkage part is locked on the shell by a first blocking force exerted by the locking mechanism, and the driving mechanism drives the inner pipe to slide relative to the linkage part; in a second locking state, the first blocking force is cancelled, the linkage part is driven by a dialing force to move so as to be locked on the driving mechanism, and the linkage part is driven by the driving mechanism to drive the inner pipe to synchronously rotate; in the first locking state the toggle force is withdrawn.
According to the valve conveying system with the structure, the linkage part is switched between the first locking state and the second locking state, and in the first locking state, as the linkage part is connected with the inner pipe in a sliding and rotation-proof manner, the linkage part is locked on the shell under the first blocking force of the locking mechanism, the driving mechanism drives the inner pipe to slide relative to the linkage part, and the linkage part is fixed, so that the fine adjustment of the axial displacement of the valve sleeved on the inner pipe is realized; in the second locking state, the first blocking force applied to the linkage part by the locking mechanism is cancelled, the linkage part can move relative to the shell and is locked with the driving mechanism under the action of stirring force, the linkage part is driven by the driving mechanism to rotate, and then the inner pipe which is connected with the linkage part in a rotation-proof way is driven to rotate, so that the circumferential displacement of the valve sleeved on the inner pipe is adjusted, therefore, the valve conveying system can adjust the axial sliding distance and the circumferential rotation displacement of the inner pipe only by arranging one driving mechanism, and the fine adjustment device is simple and compact in structure and small in occupied space.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of a valve delivery system provided in example 1 of the present invention;
FIG. 2a is a schematic view of a fine tuning device of the valve delivery system of FIG. 1 (with one half-shell of the first rotatable cap removed);
FIG. 2b is a schematic longitudinal cross-sectional view of a portion of the fine tuning device;
FIG. 3a is an exploded perspective view of the linkage member, the locking member and the rotation stop seat of the fine adjustment device;
FIG. 3b is a schematic view of the fine adjustment device with the first rotating cap removed, partially in longitudinal section;
FIG. 3c is a schematic view of the fine adjustment device with the second shell and the first rotatable cap removed;
FIG. 4 is a schematic perspective view of the fine adjustment device with the first rotating cap removed (which is in the opposite direction of the fine adjustment device in FIG. 3 b);
FIG. 5 is a schematic longitudinal cross-sectional view of the linkage member;
FIG. 6 is a schematic longitudinal sectional view (rotated 90 degrees to the right) of the fine tuning device;
FIG. 7 is a schematic structural view of a first spin cap;
FIG. 8a is a partial structural view of a second shell of the housing;
FIG. 8b is a schematic structural diagram of a first shell of the housing;
FIG. 9a is a schematic cross-sectional view of the proximal ends of the inner tube and the torsion tube after engagement with the three-way valve;
FIG. 9b is a schematic cross-sectional view of the proximal ends of the outer tube, the jaws, and the inner tube;
FIG. 10 is a schematic cross-sectional view of a transfer mechanism in the valve delivery system;
FIG. 11 is a schematic perspective view of the transfer mechanism with half of the rotating body removed;
FIG. 12 is a schematic view of the structure of the slider and the rotation preventing member;
FIG. 13 is a perspective view of an adjustable bending mechanism in the valve delivery system;
FIG. 14 is a cross-sectional view of the adjustable bending mechanism shown in FIG. 13;
FIG. 15 is a schematic view of the adjustable bending mechanism of FIG. 13 engaged with a housing;
FIG. 16 is a schematic longitudinal cross-sectional view of the inner tube, adjustable elbow, torsion tube and pull wire;
FIG. 17 is a schematic view of the outer tube, the adjustable bent tube, the pull wire, the first fixing seat and the second fixing seat;
description of reference numerals:
1-a shell; 11-a first shell; 12-a second shell; 13-a head end; 14-a first barrier rib; 15-second stop ribs; 16-a first upright; 17-rotation stopping seat; 18-a first limiting plate; 19-a second limiting plate;
2-a transfer mechanism; 21-a rotating body; 211-a second drive; 22-a slide; 221-a second mating portion; 23-a second spin cap; 24-an anti-rotation member; 241-a guide groove;
31-adjustable bent pipe; 32-drawing wires; 33-a drive member; 34-a slider; 35-a third swivel cap; 36-a guide chute;
41-operating means; 411-arc spacing strip; 412-dial body; 42-a transition piece; 421-a guide projection; 422-third bump; 43-a linkage member; 431-a first annular seat; 4311-third mounting hole; 432-a second annular seat; 4321-fourth mounting hole; 433-a linear elastic member; 434-ligand; 4341-mating projection; 4342-ring pull; 435-a first card slot; 436-a first annular chute; 44-a motion converter; 45-locking element; 451-a first mounting hole; 452 — a first projection;
51-an outer tube; 52-inner tube; 53-torsion tube;
61-a first one-way valve; 62-a second one-way valve; 63-three-way valve;
71-a first fixed seat; 72-a second fixed seat;
81-clamp; 82-sealing ring.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a valve delivery system, as shown in fig. 1 to 15, which includes a housing 1, an inner tube 52, a torsion tube 53, an outer tube 51, a transfer mechanism 2, and a fine adjustment device. In this embodiment, for convenience of description, the end of each member near the human operation is referred to as a proximal end, and the end far from the human operation is referred to as a distal end. As shown in fig. 8a and 8b, the housing comprises a first shell 11 and a second shell 12, which are preferably snap-fit connected to enclose an inner cavity of the housing, but may be fixed by other detachable connections.
The outer tube 51 is sleeved outside the inner tube 52 and positioned inside the shell 1, the proximal end of the outer tube 51 is positioned inside 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 beyond the proximal end of the outer tube 51 and the proximal end of the housing, and the distal end of the inner tube 52 extends beyond the distal end of the housing; a torsion tube 53 is sleeved outside the inner tube 52 and within the outer tube 51, a proximal end of the torsion tube 53 extends outside the proximal end of the housing and is within the inner tube, a distal end of the torsion tube extends outside the distal end of the housing and is within the distal end of the inner tube 52, the torsion tube 53 is fixed to 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 disposed on the housing 1 and is used for driving the outer tube 51 to slide axially back and forth relative to the inner tube 52, so that the distal end of the outer tube 51 is retracted towards the proximal end thereof to expose the distal end of the inner tube 52, and the distal end of the outer tube 51 is extended and covered on the distal end of the inner tube 52.
The fine adjustment device is arranged on a protruding part of the proximal end of the torsion tube 53, which protrudes out of the proximal end of the outer tube 51, i.e., the fine adjustment device is arranged to avoid the proximal end of the outer tube, and is used for driving the rotation angle and the axial movement distance of the torsion tube 53, so as to realize the fine adjustment of the rotation angle and the axial movement of the valve sleeved on the inner tube after the valve is released.
The fine adjustment device includes a drive mechanism, a lock mechanism, and a link member 43. Wherein, the linkage part 43 can be movably arranged on the shell 1 in a switching way between a first locking state and a second locking state; the linkage part 43 is sleeved outside the torsion tube 53 in a sliding and rotation-proof manner; as shown in fig. 3b and 3c, optionally, two opposite first straight surfaces 531 are disposed on the outer wall surface of the torsion tube 53, second straight surfaces corresponding to the first straight surfaces one by one are disposed on the inner wall surface of the linkage member 43, and the linkage member 43 and the torsion tube 53 are connected in a rotatable and slidable manner by the cooperation of the first straight surfaces and the second straight surfaces. The number of the first flat surfaces may be one, and correspondingly, the number of the second flat surfaces may be one.
In the first locked state, the link member 43 is locked to 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 link member 43; in the second locking state, the first blocking force is removed, the linkage part 43 is driven by the toggle force to move so as to be locked on the driving mechanism, and the torsion tube 53 is driven by the driving mechanism to synchronously rotate; in the first locking state the toggle force is withdrawn.
The locking mechanism includes a locking member 45 and a return spring (not shown), the locking member 45 being telescopically movable in a radial direction of the inner tube 52 to apply a first blocking force to the link member 43, the locking member 45 being biased by a return bias force to tend to be held in a first locked state. Referring to fig. 3b and 4, the locking member 45 is sleeved outside the distal end of the linkage member 43, a first protrusion 452 is disposed on the inner wall surface of the locking member 45, and an annular first locking groove 435 is disposed on the outer wall surface of the linkage member 43; the inner end of the locking member 45 extends into the housing 1, the outer end of the locking member extends into the first abdicating hole 202 on the housing 1 as a third operating end, as shown in fig. 8a, 3b and 3c, a button is arranged on the third operating end, the button is arranged on the housing 1 and arranged in an annular retainer ring at the periphery of the first abdicating hole, two side walls of the locking member 45 are respectively provided with a first mounting hole 451 along the radial direction of the inner tube, and the inner wall of the housing 1 is provided with first upright posts 16 corresponding to the first mounting holes 451 one by one, as shown in fig. 8 b.
Alternatively, two return springs are provided, the two return springs are installed in the first installation holes 451 in a one-to-one correspondence manner, one end of each return spring is located in the first installation hole 451, the other end of each return spring extends out of the first installation hole 451 and abuts against the first upright post 16, the return springs are compression springs, in fig. 4 and 2b, the return springs apply an upward return biasing force to the locking member 45, in this embodiment, the return biasing force is used as a first blocking force, the first protrusions 452 are clamped in the first clamping grooves 435, so that the linkage part 43 is limited on the locking member 45 along the radial direction of the inner tube, in fig. 8 and 3c, two first guide grooves 201 are provided on the inner wall of the housing, the convex walls provided with the first installation holes 451 at both sides of the locking member are respectively slidably provided in one first guide groove 201, so that the locking member is limited to slide along the radial direction of the inner tube, so that the linkage part is limited on the housing, the interlocking member 43 is placed in the first locked state. When the physician presses the button downward in fig. 3b, the reset biasing force is overcome, and the first protrusion 452 is withdrawn from the first notch 435, the first blocking force is released, the linkage member 43 and the locking member 45 are unlocked, and the linkage member 43 is axially slidable along the inner tube 52 relative to the locking member 45.
As shown in fig. 6, the driving mechanism includes an operating member 41, a transition piece 42, and a motion conversion piece 44. Wherein, the operating member 41 is provided on the housing 1 to be switchable between a first state and a second state. For example, the operating member 41 is a first rotating cap, a distal end of the first rotating cap is an opening, and a proximal end of the first rotating cap is provided with a second yielding hole. The transition piece 42 is a first threaded pipe that is provided on the inner wall surface of the locking piece 45 so as to be prevented from rotating.
The far end of the operation component is sleeved outside the near end of the shell, the linkage component is arranged in the inner cavity of the near end of the shell, the far end of the transition piece is arranged in the shell, and the near end of the transition piece is arranged in the inner cavity of the operation component.
Wherein, the distal end of transition piece establishes on the near-end of casing with antiskid, and the near-end of transition piece 42 stretches into the inner chamber of first rotatory cap and is equipped with guide protrusion 421, as shown in fig. 8a, be equipped with two radian spacing strips 20 on the near-end inner wall of casing, as shown in fig. 2a, be equipped with two annular outer edges on the distal end outer wall of transition piece, two radian spacing strips 20 are located between two annular outer edges, and two annular outer edges butt respectively on an arc spacing strip, thereby restriction transition piece 42 has the slip displacement in the axial, the transition piece can only rotate along with the operating means.
For example, in fig. 2a, two guiding protrusions 421 are provided on the outer wall surface of the transition piece 42, and most preferably, the two guiding protrusions 421 are symmetrically provided on two sides of the axis of the transition piece 42, as shown in fig. 7, the inner wall surface of the operating member 41 is provided with arc-shaped limiting strips 411 which are axially arranged and radially extend, the two arc-shaped limiting strips 411 are respectively provided with a first sliding groove and a second sliding groove, and the guiding protrusions 421 are inserted into the first sliding groove and the second sliding groove to connect the proximal end of the transition piece 42 and the operating member 41 in a sliding manner and in a rotation-preventing manner.
Optionally, the motion conversion member 44 is a first fixing nut fixed outside the torsion tube 53, a thread fit is formed between the first fixing nut and an inner wall surface of the first threaded tube to form a screw rod structure, and the first threaded tube is linked with the torsion tube 53 through the first fixing nut.
As shown in fig. 2a and 2b, the operating member 41 is slidably and rotatably disposed on the housing, an annular toggle body 412 is disposed on an inner wall surface of the operating member 41, for example, the toggle body 412 is a first annular sliding groove formed on the inner wall surface of the operating member 41, in fig. 7, the inner wall surface of the operating member 41 is provided with a recessed annular step, a gasket or a retaining ring is disposed on a right side step surface of the annular step, and the first annular sliding groove is formed between the gasket or the retaining ring and a left side step surface of the annular step.
The outer wall of the linkage part 43 is rotatably and non-slidably provided with a fitting body 434, as shown in fig. 4 and 5, the outer wall of the linkage part 43 is provided with a second annular sliding groove 436, the fitting body 434 includes a pull ring 4342 rotatably sleeved in the second annular sliding groove and a fitting protrusion 4341 radially protruding and formed on the outer wall of the pull ring 4342, the fitting protrusion 4341 is located outside the second annular sliding groove, optionally, two fitting protrusions 4341 are provided, preferably, the two fitting protrusions 4341 are symmetrically distributed, two side walls of the second annular sliding groove limit the axial direction of the pull ring, so that the pull ring and the linkage part 43 slide synchronously, and the linkage part 43 can rotate relative to the pull ring, i.e., the fitting body and the linkage part are non-slidably and rotatably connected.
As shown in fig. 3b, fig. 8a and fig. 8b, the housing 1 is provided with a third yielding hole 203, two engaging protrusions 4341 respectively pass through one third yielding hole 203 and extend out of the housing 1, and are embedded into the first annular sliding groove on the operating member, an end of the engaging protrusion 4341 is in clearance fit with a groove bottom of the first annular sliding groove, so that the operating member can rotate relative to the engaging protrusion 4341, and two groove walls of the first annular sliding groove limit an axial direction of the engaging protrusion 4341, so that the operating member is rotatably connected with the engaging protrusion 4341 in an anti-sliding manner.
As shown in fig. 2a and 5, of the end surfaces of the linkage component 43 and the transition piece 42 facing each other, a third locking groove is formed on the proximal end surface of the linkage component 43, a third protrusion 422 is formed on the distal end surface of the transition piece 42, for example, the third protrusion 422 is two arc-shaped protrusions, and the third protrusion 422 and the third locking groove are in one-to-one corresponding pluggable fit. When the linking component 43 slides towards the transition piece 42 along with the operating component 41, the third slot is gradually sleeved on the third protrusion 422, and the linking component 43 is locked on the transition piece 42 through the insertion fit of the third protrusion 422 and the third slot, and the linking component 43 and the transition piece 42 are in anti-rotation connection.
Preferably, as shown in fig. 5, a first groove is formed on a proximal end surface of the linkage part, a plurality of fourth mounting holes 4321 are formed in a groove bottom of the first groove, all the fourth mounting holes 4321 are distributed on the same circumference, linear elastic members 433 are correspondingly arranged in the fourth mounting holes 4321 one by one, one end of each linear elastic member is located in the fourth mounting hole, and the other end of each linear elastic member is located in the first groove, for example, the linear elastic members 433 are pogo pins, when the third protrusion 422 axially presses the pogo pins at the corresponding positions, the part of the pogo pins retracts and deforms, and a third clamping groove is defined between the retracted pogo pins and the adjacent pogo pins which do not retract and deform.
In the first locking state, the far end of the linkage part 43 is locked on the locking part 45, the near end of the linkage part 43 is separated from the transition piece 42, and as a screw rod structure is formed between the transition piece 42 and the motion conversion piece 44, the operation part is in the first state, when the operation part 41 rotates to drive the transition piece 42 to rotate, the linkage drives the motion conversion piece 44 to slide on the transition piece 42, the linkage part 43 and the matching protrusion are not driven to rotate in the process, and at the moment, the linkage part 43 and the matching body are in a static state relative to the shell; in the second locking state, the operating member is in the second state, in fig. 3b, the button is pressed downwards 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, the linking member 43 is separated from the locking member 45, meanwhile, since the operating member is slidably connected with the transition member, the operating member slides rightwards in fig. 3b, the first annular chute of the linking member 43 pushes the engaging protrusion of the engaging body to slide rightwards synchronously in the third relief hole, since the linking member 43 is connected with the engaging body in a non-slip manner, the engaging body is connected with the linking member 43 in a non-slip manner, so that the engaging body drives the linking member 43 to slide rightwards on the torsion tube, the distal end of the linking member 43 is gradually withdrawn from the inner hole of the locking member 45, the elastic needle on the proximal end of the linking member 43 is extruded and retracted by the third protrusion 422 on the transition member, so that a third slot is formed between the elastic needle and the adjacent unretracted elastic needle, the third protrusion 422 is inserted into the third slot, so as to lock the linkage part 43 on the transition piece; at this time, the operation part rotates, because the operation part is rotatably connected with the matching body 434, the linkage part 43 is rotatably connected with the matching body 434, and the operation part is rotatably connected with the transition piece, the operation part drives the transition piece to rotate, and then the transition piece drives the linkage part 43 to rotate, at this time, the linkage part 43 rotates relative to the pull ring, and the matching protrusion is still kept in the third abdicating hole and cannot rotate along with the linkage part 43; the linking member 43 then rotates the torsion tube which is rotationally connected to the linking member.
That is, in the first locked state, the operating member is rotatable relative to the linkage member 43 and the mating body, the operating member being rotationally connected with the transition piece; in the second locked state, the operating member slides relative to the transition piece in synchronism with the mating body and the interlocking member 43, and thereafter the operating member rotates relative to the mating body in synchronism with the transition piece and the interlocking member 43.
Therefore, in the fine adjustment device, since the linkage member 43 and the fitting body 434 are provided, it is possible to drive the torsion tube 53 and the inner tube 52 to move and rotate in the axial direction thereof only by providing one driving mechanism, and it is not necessary to provide two sets of driving mechanisms to drive the torsion tube 53 to rotate and slide, respectively, so that the fine adjustment device is compact in structure and small in occupied space while realizing adjustment of the rotation and the slide of the torsion tube 53.
The trimming means further comprise at least one first elastic element (not shown in the figures) arranged between the transition piece 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 linking member 43 to slide toward the transition member 42. The number of the tension springs is one, two, three and the like, and the specific number is determined according to the requirement and is not limited.
In fig. 2a, the guide protrusions on the two side walls of the transition piece 42 are provided with second mounting holes extending axially, the second mounting holes are opposite to the openings of the second mounting holes, the arc-shaped limiting strips 411 are opposite to the openings of the second mounting holes, the tension springs are arranged in the second mounting holes, one ends of the tension springs are abutted to the hole wall ends of the second mounting holes opposite to the openings, the other ends of the tension springs are abutted to the arc-shaped limiting strips 411, when the operating part 41 slides towards the right in fig. 2a relative to the transition piece 42, the space between the arc-shaped limiting strips 411 and the second mounting holes is increased, the tension springs are stretched to release energy, and the released energy drives the operating part 41 and the linkage part 43 to move towards the right integrally (i.e..
In order to prevent the operating member 41 from rotating in the first locking state and to drive the linking member 43 to rotate, the fine adjustment device is further provided with a rotation preventing mechanism, and as shown in fig. 3a, 3b and 4, the rotation preventing mechanism includes a rotation preventing seat 17, a second protrusion 171 and a second engaging groove. The rotation stopping seat 17 is disposed on the casing 1, for example, in fig. 3c, a side wall surface on the casing 1 is provided with a limiting blocking rib 204 which extends along the axial direction, a limiting clamping groove is defined by the limiting blocking rib 204 and the distal end of the first guide groove 201, two outer side ends of the rotation stopping seat 17 are respectively provided with a second bump, and the two second bumps are respectively inserted into the limiting clamping groove to realize the fixed connection of the rotation stopping seat 17 and the casing 1. Or other fixing methods are adopted to fix the rotation stopping seat on the shell, such as a screw or bolt assembly and the like.
The linkage member 43 is located between the rotation stop block 17 and the transition piece 42; in the end surfaces of the linkage component 43 and the rotation stopping seat 17 facing each other, as shown in fig. 3a, at least one second protrusion 171 is disposed on the proximal end surface of the rotation stopping seat 17, second locking grooves corresponding to the second protrusions 171 one by one are disposed on the end surface of the linkage component 43, and the second protrusions 171 are in insertion fit through the second locking grooves, so that in the first locking state, the linkage component 43 is locked by the locking member 45 and is also disposed on the housing 1 in a rotation-preventing manner. Meanwhile, one end of the linkage component 43, which is provided with the second clamping groove, abuts against the end surface of the rotation stopping seat 17, and the rotation stopping seat 17 plays a limiting role in the sliding position of the far end of the linkage component 43.
As shown in fig. 4 and 5, a recessed second groove is formed at a distal end of the linkage part 43, a plurality of third mounting holes 4311 are formed at a bottom of the second groove, and all the third mounting holes 4311 are distributed on the same circumference; each third mounting hole 4311 is internally provided with a linear elastic member 433, one end of the linear elastic member is located in the third mounting hole, the other end of the linear elastic member is located in the second groove, for example, the linear elastic member 433 is a pogo pin, in the first locking state, the second protrusion 171 axially presses the linear elastic member 433 at the alignment position, the linear elastic member 433 is pressed by the second protrusion 171 to retract and deform, the retracted linear elastic member 433 and the adjacent non-retracted linear elastic member 433 enclose the second slot therebetween, and the non-retracted linear elastic member 433 is circumferentially blocked and limited by the second protrusion 171, so that the linkage component is limited on the rotation stopper seat in a rotation-proof manner. The latch may be replaced with other linear resilient members such as a spring tube. Of course, the second clamping groove and the third clamping groove can be directly grooves without elastic needles.
As best shown in fig. 5, the linkage member 43 includes a first annular seat 431 and a second annular seat 432. The proximal end of the first annular seat is fixedly connected with the distal end of the second annular seat in a snap-fit manner, for example, the first annular seat comprises a first annular body, a first annular projection which is convexly arranged on the distal end face of the first annular body, and the third mounting hole 4311 is arranged on the first annular projection; the first annular body is provided with a clamping hole, the far end of the second annular seat is provided with a clamping block protruding in the radial direction, the far end of the second annular seat extends into the first annular body, the clamping block is clamped in the clamping hole, and the near end of the second annular seat is provided with the first groove and the fourth mounting hole 4321; a second annular sliding groove is formed in the outer peripheral wall of the second annular seat 432.
In addition, the second card slot is surrounded by the retracted pogo pin and the adjacent non-retracted pogo pin, because the linkage component 43 rotates by a required angle in the second locking state, no matter how many angles the linkage component 43 rotates, when the linkage component 43 is switched from the second locking state to the first locking state, the second protrusion 171 can extrude the pogo pin opposite to the second protrusion to retract, so as to form the second card slot; similarly, when the linkage member 43 is switched from the first locking state to the second locking state again, the third protrusion 422 can press the pogo pin opposite thereto to retract, so as to form the third slot.
It should be noted that: if the second and third card slots are not formed by linear elastic members, when the second locking state is switched to the first locking state, the linkage member 43 needs to rotate first to restore the third and second card slots to the corresponding positions of the last first locking state, so that the second card slot can be inserted into and matched with the second protrusion 171 when the linkage member 43 slides towards the rotation stop seat; likewise, when the linking member 43 is slid toward the transition piece again, the third engaging groove and the third protrusion 422 can be engaged.
As shown in fig. 9a, a three-way valve 63 is disposed on the proximal end of the torsion tube 53, a fluid outlet of the three-way valve 63 is hermetically 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 in the sidewall of the three-way valve 63, which is connected to the lumen of the torsion tube 53. Injecting saline into the inner cavity of the inner tube 52 through the first inlet to remove air bubbles existing in the inner tube 52; similarly, the normal saline is injected into the lumen of the torsion tube 53 through the second inlet to remove air bubbles existing in the torsion tube 53.
For the torsion tube 53, it includes two sections, the first section is made of medical plastic material, the second section is stainless steel tube, the near end of the first section and the far end of the second section are fixedly connected by the connecting sleeve in a sealing way, the second section adopts stainless steel tube, the far end of the second section is fixed in the inner cavity of the second annular seat, the near end of the second section is used as the near end of the torsion tube 53; the proximal end of the first segment extends into the lumen of the second annular seat and the connecting sleeve is located in the lumens of the first and second annular seats. The second section is connected with the second annular seat in an anti-rotating and slidable way and is provided with the first straight plane; the first section penetrates through the inner hole of the first annular seat and the first section and the second section are separated. The above-mentioned motion-transformation element 44 is directly fixed to the second section, which is mainly intended to provide a supporting force for the mounting of the motion-transformation element and the linkage element 43, the sliding of the linkage element 43 on the second section.
As shown in fig. 10, the transfer mechanism 2 includes a rotating body 21 and a sliding member 22, and an annular relief hole is provided on the outer periphery of the distal end of the housing. The distal end of casing is gone up the cover and is equipped with head end 13, encloses into an annular hole of dodging between the near-end of head end 13 and the distal end of casing 1. Preferably, the housing 1 is formed by two symmetrical half shells. The rotating body 21 is rotatably arranged on the inner wall surface of the shell 1, the far 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 internal threads; the sliding piece 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 engages with the internal thread, so that the threaded engagement between the sliding member 22 and the rotating body 21 forms a screw structure. For example, the slider 22 is a second fixing nut. The rotator 21 comprises a hollow cylinder and a second driving part 211, an internal thread is arranged on the inner wall surface of the cylinder, the near end of the second driving part 211 is fixed on the far end of the cylinder, and the far end of the second driving part 211 is bent to penetrate through the annular avoiding hole to extend out of the shell. As shown in fig. 10, a second rotating cap 23 is further fixed at the distal end of the second driving portion 211, the second rotating cap 23 is annular and directly covers the annular avoiding 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.
In this embodiment, since the rotating body 21 is rotatably provided on the housing, the housing does not move when the rotating body 21 rotates; meanwhile, the outer sheath tube is directly connected with the second fixing nut, the second fixing nut is matched with the barrel of the rotating body 21 in a threaded mode to form a screw rod structure, when the screw rod structure acts, the rotating body 21 only drives the second fixing nut to rotate to drive the outer sheath tube to move, the outer shell and the inner tube 52 do not act, the outer shell and the inner tube 52 do not shake while the outer tube 51 is driven to move relative to the inner tube 52, and therefore the valve sleeved on the inner tube 52 cannot shake, the valve is ensured not to shift in position when being implanted into a human body and released, and the failure risk of valve replacement surgery is reduced.
As shown in fig. 10, 11 and 12, the transfer mechanism 2 further comprises an anti-rotation member 24 fixed to the casing and extending in the sliding direction of the slide member 22; the second fixing nut is provided with a first matching hole 222 for the rotation preventing part 24 to pass through on the part avoiding the fourth abdicating hole 223, the second fixing nut is sleeved on the rotation preventing part 24 through the first matching hole, the rotation preventing part 24 limits the second fixing nut to be capable of linearly sliding along the extending direction of the rotation preventing part 24 and not rotating, and further the second fixing nut is ensured to drive the outer tube 51 to be capable of linearly sliding in a reciprocating manner.
Alternatively, the rotation preventing member 24 is provided with a guide groove 241 extending in the sliding direction of the sliding member 22; the interior of the sliding part 22 is a hollow cavity, a second matching part 221 is fixed in the hollow cavity, and a fourth abdicating hole 223 is formed in the second matching part 221; a first matching hole 222 is defined between the outer side wall of the second matching part 221 and the inner side wall of the sliding part 22, the second matching part 221 is inserted into the guide groove 241, and when the sliding part 22 slides linearly, the first matching hole and the guide groove 241 both play a role in guiding and limiting the sliding of the sliding part 22. Meanwhile, the guide groove 241 can also be penetrated by the outer tube 51, the inner tube 52, the torsion tube 53 and the adjustable elbow 31 mentioned below, and a relief hole is not required to be separately provided, so that the structure of the rotation preventing part 24 is compact.
Preferably, the guiding groove 241 is a U-shaped groove, and correspondingly, the second engaging portion 221 is a U-shaped protrusion, and the open end of the U-shaped protrusion is fixed on the inner wall surface of the slider 22. The distal end of the rotation preventing part 24 is fixed in the inner cavity of the head end 13, and the proximal end is fixed on the shell 1 through the second fixing seat 72; an annular avoidance hole is defined between the near end of the head end 13 and the far end of the shell 1.
For example, the head end 13 and the distal end of the rotation preventing member 24 are directly fixed by screws, the proximal end of the head end 13 and the distal end of the housing 1 are completely separated, and the two are indirectly and fixedly connected by the rotation preventing member 24, the second fixing seat 72 and the second fixing seat 72, so as to ensure that the annular avoiding hole is avoided in a circumferential direction by 360 degrees, and the second rotating cap 23 can rotate by 360 degrees.
A recessed fourth slot is disposed on the distal end surface of the second fixing seat 72, and the proximal end of the rotation preventing member 24 is inserted into the fourth slot. For example, the longitudinal section of the anti-rotation member 24 is U-shaped, and the fourth slot is correspondingly U-shaped, so that the proximal end of the anti-rotation member 24 is inserted into the fourth slot.
As shown in fig. 11, the distal end of the second fixing seat 72 is fixed to the anti-rotation member 24, and the proximal end of the second fixing seat 72 is fixed to the first fixing seat 71, as shown in fig. 8, the inner wall of the housing 1 is circumferentially provided with a first blocking rib 14 and a second blocking rib 15, respectively; and along first limiting plate 18 and the second limiting plate 19 of outer tube 51's axial setting side by side, second fixing base 72 and first fixing base 71 card are between first limiting plate 18 and second limiting plate 19, the distal end of second fixing base 72 stretches out the outside of two limiting plates, the terminal surface butt of this distal end is on first fender muscle 14, the near-end of first fixing base 71 stretches out the outside of two limiting plates, the terminal surface butt of this near-end is on second fender muscle 15, the realization is installed second fixing base 72 and first fixing base 71 on casing 1, realize the fixed connection of head end 13 and casing 1.
For example, the second fixing seat 72 and the first fixing seat 71 have the same structure, and now the structure of the second fixing seat 72 is taken as an example for description, the second fixing seat 72 includes a tube body and an annular disc 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 disc abuts against the first rib 14.
The second fixed seat 72 is connected with the first fixed seat 71 through a fastener, and the near end of the second fixed seat 72 is connected with the far end of the first fixed seat 71 through a snap connection. Or may be attached only by fasteners. In addition, a fifth yielding hole and a sixth yielding hole for the pipe to pass through are respectively arranged on the second fixing seat 72 and the first fixing seat 71.
The proximal end of the outer tube 51 is slidably disposed in the inner hole of the second fixing seat 72, and similar to the above-mentioned torsion tube 53, the outer tube 51 also includes two sections, the first section of outer tube is made of medical plastics, the second section of outer tube is a stainless steel tube, and the proximal end of the first section of outer tube and the distal end of the second section of outer tube are respectively fixed in the inner hole of the second fixing nut of the above-mentioned transfer mechanism. As shown in fig. 10, the distal end and the 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 outer tube is fixed on the first annular step, the proximal end of the second section of outer tube extends out of the second fixing nut and extends into the fifth abdicating hole fixed on the second fixing seat, the second annular step is provided with a sealing ring and a clamp, and the clamp blocks the sealing ring to be limited on the second annular step, so that the second section of outer tube and the second fixing nut are connected in a sealing manner.
As shown in fig. 10, a step is provided on the proximal end of the fifth relief hole of the second fixing seat 72, a sealing ring 82 and a clamp 81 are provided on the step, and the clamp 81 limits the sealing ring 82 on the first fixing seat 71, so that the proximal end of the outer tube is slidably and sealingly provided on the second fixing seat.
As shown in fig. 13 and 14, the valve delivery system further includes an adjustable bending mechanism including an adjustable bending assembly disposed outside the inner tube 52 and inside the outer tube 51, wherein the distal end of the adjustable bending assembly is disposed inside the distal end of the inner tube 52, and the proximal end thereof extends out of the proximal end of the outer tube 51 and bends and extends along the radial direction of the inner tube 52; and a second operating assembly connected to the proximal end of the adjustable bending assembly; the second operating component is independent of the first operating component of the transfer mechanism 2 and is used for driving the adjustable bending component to bend by a required angle; the second operating end of the second operating assembly and the first operating end of the first operating assembly of the transfer mechanism 2 are exposed out of the housing 1. Because the first operating component and the second operating component are independently arranged, the doctor can respectively or simultaneously adjust the axial sliding distance of the outer tube 51 and the bending angle of the inner tube 52, and the first operating component and the second operating component do not influence each other.
For example, one of the first operating assembly and the second operating assembly is arranged on the housing 1 in the axial direction of the inner tube 52, and the other is arranged on the housing 1 in a direction intersecting the axial direction of the inner tube 52. Preferably, as shown in fig. 1, the housing 1 includes a body and an extension part, the extension part is obliquely disposed on the body to make the housing 1 in a Y shape, the first operating component is disposed on the body, the first operating end extends out of the body, the second operating component is disposed on the extension part, and the second operating end extends out of the extension part. The second operating assembly is located between the first operating assembly and the fine adjustment device.
As shown in fig. 13, 14, 15, 16 and 17, the adjustable bending assembly further includes an adjustable bending tube 31 and a pull wire 32, the adjustable bending tube 31 is sleeved outside the torsion tube 53, a distal end of the torsion tube 53 extends out of a distal end of the adjustable outer tube 51, and a proximal end of the adjustable bending 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 pull wire 32 is made of a flexible material, has a distal end fixed to the outer wall of the adjustable elbow 31 and a proximal end radially bent along the inner tube 52 to extend outwardly through a portion of the adjustable elbow extending beyond the proximal end of the outer tube and is connected to the second operating member. For example, the traction wire is a steel wire.
The second operation assembly comprises a driving part 33 and a sliding block 34 which are rotatably arranged in the shell 1, wherein the driving part 33 is a first screw, the sliding block 34 is sleeved on the first screw in a matching way through external threads, the near end of the traction wire is fixed on the sliding block 34, and the sliding block 34 is driven to rotate through driving the first screw so as to make the sliding block 34 do linear motion along the axial direction of the first screw, further drive the near end of the traction wire to move, and further drive the near end of the adjustable elbow 31, the torsion tube 53 and the near end of the inner tube 52 to bend at required angles. Be connected with the rotatory cap 35 of third on the second operation end of second operation subassembly, for example, be equipped with annular boss on the tip of first screw rod, outside the extension was stretched out to annular boss, the rotatory cap 35 of third cover was on annular boss to pass through the buckle with annular boss and be connected.
Be equipped with guide and direction spout 36 along the slip direction of sliding block 34, the guide sets up on casing 1, and direction spout 36 sets up on sliding block 34, and the guide slidable imbeds in the direction spout 36, makes sliding block 34 can not take place the skew at the slip process, avoids sliding block 34 and first screw rod synchronous revolution simultaneously. For example, the guiding element is a guiding protrusion 421, and the guiding protrusion 421 is slidably inserted into the sliding slot. Alternatively, the slide groove is provided on the housing 1, and the guide is provided on the outer peripheral wall of the slide block 34. Of course, the positions of the guide member and the guide groove may be reversed.
As shown in fig. 12, the proximal end of the adjustable elbow 31 passes through the second fixing seat 72 and is fixed to the inner hole of the first fixing seat 71 by a first sealing element in a sealing manner; a fifth mounting hole is formed in the first fixing seat 71 along the radial direction of the inner pipe 52, and a sixth mounting hole communicated with the fifth mounting hole is formed in the position, corresponding to the fifth mounting hole, of the shell 1; as shown in fig. 14 and 15, and the first check valve 61 is disposed in the fifth mounting hole and the sixth mounting hole, the fluid outlet of the first check valve 61 is communicated with the inner cavity of the adjustable elbow 31, and the fluid inlet thereof is located outside the housing 1.
The near end of the second fixed seat 72 is fixedly connected with the far end of the first fixed seat 71; a seventh mounting hole is formed in the second fixing seat 72 along the radial direction of the inner pipe 52, and an eighth mounting hole communicated with the seventh mounting hole is formed in the position, corresponding to the seventh mounting hole, of the shell 1; and a second one-way valve 62 arranged in the seventh mounting hole and the eighth mounting hole, wherein a fluid outlet of the second one-way valve 62 is communicated with the inner cavity of the outer tube 51, and a fluid inlet thereof is positioned outside the shell 1.
When the delivery system is used, air or bubbles in the outer tube 51 need to be discharged outside a human body, at this time, the second one-way valve 62 is opened, physiological saline is injected into the inlet end of the second one-way valve 62, the physiological saline enters the inner cavity of the outer tube 51 through the outlet end, the bubbles in the outer tube 51 are emptied, and after the bubbles are emptied, the first one-way valve 61 is closed. Similarly, the first check valve 61 is opened, the physiological saline is injected into the inlet section of the first check valve 61, the physiological saline enters the inner cavity of the adjustable elbow 31 through the outlet end, bubbles in the inner cavity of the adjustable elbow 31 are emptied, and the first check valve 61 is closed after the bubbles are emptied.
In addition, as shown in fig. 9b, the valve delivery system further includes two claws 54, which are a first claw and a second claw, respectively, the first claw is sleeved on the distal end of the torsion tube 53 and the inner tube 52, 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 used for sleeving and installing the valve. Before the valve operation, the valve is required to be sleeved on the inner tube 52 in advance, the two axial ends of the valve abut against the first claw and the second claw respectively, and the valve is accommodated in the inner cavity of the outer tube 51 in a folded state. When a doctor is required to perform valve replacement operation on a patient, the output system is used by the following steps:
firstly, the distal end of the outer tube 51 of the whole delivery system is inserted into the position of the human body where the valve needs to be replaced, in the process, the doctor integrally pushes the shell 1 to insert into the position of the human body where the valve needs to be replaced, and in the process, the shell 1 cannot be inserted into the human body integrally.
First, the transfer mechanism 2 drives the outer tube 51 to retract and move towards the proximal end, and the valve is released from the inner cavity of the outer tube 51; specifically, the method comprises the following steps:
in fig. 10, the second rotating cap 23 is rotated to drive the rotating body 21 to rotate, and further the sliding member 22 is driven to drive the outer tube 51 fixed thereon to gradually retract towards the proximal end until the proximal end of the outer tube 51 exposes the whole valve, and the folded valve is released instantly; in this process, the torsion tube 53, the adjustable bent tube 31, and the inner tube 52 do not move along with the outer tube 51, so that during the release of the valve, the outer tube 51 retracts to release the valve, and the proximal end of the outer tube 51 slides on the inner hole of the second fixing seat 72.
Secondly, the bending angles of the inner tube 52 and the torsion tube 53 are roughly adjusted by an adjustable bending mechanism, specifically:
as shown in fig. 13, 14 and 15, the third rotary cap 35 is rotated, the first screw is driven to rotate, so that the slide block 34 slides upward in fig. 13, causing the proximal end of the pull wire to move upward, because the proximal end of the adjustable elbow 31 is fixed in the first fixed seat 71, and the distal end is sleeved outside the torsion tube 53, which is equivalent to the position of the adjustable elbow 31 in the axial direction is fixed on the housing 1, the proximal end of the pull wire slides upwards to drive the proximal end of the adjustable elbow 31 to bend deviating from the axis of the initial inner tube 52, thereby driving the inner tube 52 and the proximal end of the adjustable elbow 31 to bend integrally deviating from the axis thereof, finally driving the valve to bend at the required angle until the bending angle meets the requirement, the third rotating cap 35 stops rotating, the sliding block 34 remains on the first screw, keeping the valve at the adjusted bending angle, during which, the proximal end of the outer tube 51 is retracted, but the proximal end of the outer tube 51 is entirely bent with the proximal end of the adjustable outer tube 51.
Afterwards, adopt micromatic setting, adjust the axial displacement of valve, adjust the circumferential rotation displacement of valve again, specifically:
initially, the distal end of the linkage member 43 is locked on the locking member 45 and is restrained against rotation on the second projection 171 of the rotation-preventing seat 17, in a first locked state, the first rotary cap being in a first state, as shown in fig. 3 b.
First, as shown in fig. 6, when the first rotating cap rotates, the transition piece 42 is driven to rotate synchronously, and the motion conversion piece 44 screwed on the transition piece 42 slides to the proximal end or the distal end of the transition piece 42 on the internal thread of the transition piece 42, so as to realize fine adjustment of the axial displacement of the valve on the inner tube until the position of the valve on the inner tube 52 in the axial direction is at the valve position of the human body to be treated.
Then, the linkage member 43 is switched from the first locking state to the second locking state, the first rotating cap is switched from the first state to the second state, in fig. 3b, the button on the locking member 45 is pressed downward, the first protrusion 452 is withdrawn downward from the first slot 435 against the blocking of the biasing force of the return spring, the second protrusion 171 is still inserted into the second slot, and the linkage member 43 can slide axially in the inner tube 52 relative to the locking member 45; because the first rotating cap is connected with the transition piece in a rotation-proof and slidable manner, at this time, the first rotating cap is pushed rightwards in fig. 2a, the distance between the first rotating cap and the transition piece 42 is increased, the tension spring between the first rotating cap and the transition piece releases energy to drive the first rotating cap to slide rightwards, the poking body 412 on the first rotating cap acts on the matching protrusion 4341 to drive the matching body and the linkage part 43 to slide rightwards integrally, wherein the matching protrusion 4341 slides in the third abdicating hole 203 of the shell until the second protrusion 171 on the rotation-stopping seat 17 exits from the second clamping groove, the correspondingly retracted and deformed elastic needle on the second clamping groove is reset, the distal end of the linkage part 43 completely exits from the inner hole of the locking piece, at this time, the button is released, the locking piece 45 is reset under the reset, the second protrusion is kept in the inner hole of the locking piece, and at the same time, the proximal end of the linkage part 43 is, the third protrusion 422 is inserted and matched with a third clamping groove formed by the elastic needle, and an anti-rotation and slidable lock is formed between the linkage part 43 and the transition piece 42 to stop pushing the first rotating cap.
Then, the first rotating cap is rotated, the first rotating cap is connected with the transition piece in a rotation-proof and slidable mode, the first rotating cap is connected with the matching protrusion in a rotation-proof and anti-slip mode, the matching body is connected with the linkage part in a rotation-proof and anti-slip mode, the first rotating cap drives the transition piece 42 to rotate, the linkage part is locked on the transition piece in a rotation-proof mode, the linkage part 43 is connected with the torsion pipe 53 in a rotation-proof mode, the linkage part, the torsion pipe and the inner pipe are synchronously driven to rotate, the motion conversion part 44 on the torsion pipe 53 and the transition piece 42 synchronously rotate, and no relative motion exists between the linkage part 43 and the torsion pipe; in the process, the first annular clamping groove of the first rotating cap rotates on the matching protrusion 4341, the linkage part 43 rotates relative to the pull ring 4342, the pull ring 4342 and the matching protrusion 4341 are kept in a static state on the shell until the rotating angle of the valve on the inner tube 52 is adjusted to a proper position, so that the artificial valve is rotated to be almost completely attached to the valve position needing to be replaced in the human body, and the first rotating cap stops rotating.
And after the artificial valve is fixed in the human body, withdrawing the conveying system from the human body. In direct contrast to the above-described procedure, the first rotary cap is switched from the second state to the first state, and the linkage member 43 is switched from the second locking state to the first locking state, specifically:
in fig. 2a, 2b and 3b, the first rotating cap is pushed towards the left, the first rotating cap drives the cooperating body and the linkage component 43 to slide integrally relative to the transition piece towards the direction of the rotation stop seat 17, the third slot at the proximal end of the linkage component 43 is separated from the third protrusion 422 on the transition piece 42, the elastic needle retracted at the proximal end of the linkage component 43 is reset, at the same time, pressing the button down again, the distal end of the link member 43 slides into the inner bore 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 latch on the distal end of the pressing link 43, so that the second protrusion 171 is inserted into the second groove formed by the latch, and at this time, the button is released, under the action of the reset biasing force of the reset spring, the first protrusion 452 is clamped in the first clamping groove 435, so that the locking piece 45 is locked with the linkage part 43, and the linkage part 43 is switched from the second locking state to be reset to the first locking state;
the first rotatable cap is then rotated to cause proximal retraction of the transition piece 42 and the motion conversion piece 44 until the inner tube 52 is completely separated from the valve.
Then, the adjustable bending mechanism acts to rotate the third rotating cap 35, so that the proximal end of the adjustable bent pipe 31, the proximal end of the torsion pipe 53 and the proximal end of the inner pipe 52 are reset to the non-bending state from the bending state; finally, the second rotating cap 23 of the transfer mechanism 2 rotates, and the outer tube 51 makes an extending movement towards 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 the whole body out of the human body.
Example 2
The present embodiment provides a valve delivery system that differs from the valve delivery system provided in embodiment 1 in that: for example, the cooperating body may be non-slip and rotatably connected to the operating member in other ways. For example, the fitting projection is connected to the inner wall surface of the operation member via a bearing; or the matching bulge is not arranged, the direct pull ring is arranged on the inner wall of the operation part through the bearing, and at the moment, the poking body and the matching body are combined into a whole, and the whole body is the bearing.
Or, as a further variation, when the matching body and the toggle body are arranged, the pull ring of the matching body is directly fixed on the linkage component, correspondingly, the matching protrusion is rotatably arranged on the shell, or the matching protrusion avoids the shell and is directly inserted into the first annular clamping groove, and in the first locking state, the operating component can still rotate relative to the matching protrusion; in the second locking state, when the operation part rotates, the linkage part and the matching body are synchronously driven to rotate.
Alternatively, as a further modification, the engaging body and the toggle portion are not provided, and the outer wall surface of the interlocking member and the inner wall of the operating member are directly connected by the bearing.
Example 3
The present embodiment provides a valve delivery system, which differs from any of the valve delivery systems provided in embodiments 1 and 2 in that: the fine setting device, in this embodiment, the operation part and the linkage part are connected in a rotation-proof and slidable manner, the operation part and the transition piece are connected in an anti-slip manner, the motion conversion piece does not need to be arranged at this time, the torsion tube is directly fixed in the inner hole of the transition piece, and the linkage part and the torsion tube are still connected in a rotation-proof and slidable manner.
In a first state, the operation part directly drives the transition piece to synchronously slide towards the near end or the far end to directly drive the torsion tube to slide, so that the fine adjustment of the axial displacement of the inner tube is realized, correspondingly, the linkage part is in a first locking state, the far end of the linkage part is locked on the shell through the matching of the first protrusion and the first clamping groove, and the support column, the second protrusion and the second clamping groove in the embodiment 1 are not required to be arranged; at the second locking state, need exert the toggle force towards the transition piece for the linkage part alone, for example be equipped with solitary operating button on the casing, it slides to directly stir the linkage part, make the linkage part slide towards the transition piece, and the near-end of linkage part still cooperates with the third draw-in groove through third protruding 422 and third draw-in groove with the distal end of transition piece, form and prevent rotating the connection, at the second state, because the rotating connection is prevented to operating element and linkage part, then direct rotatory operating element, can drive linkage part and transition piece and twist tube synchronous rotation, the realization is to the fine setting of the circumferential displacement of inner tube. That is, in the second state, the toggle force of the sliding of the link member does not originate from the operation member.
In addition, the first blocking force in the locking mechanism may not be the return biasing force in embodiment 1, but may be the first blocking force alone, for example, no return spring is provided, or when a return spring is provided, after the first protrusion is inserted into and matched with the first slot, the locking member and the linkage member are locked by using other detachable fixing structures, for example, a screw or a bolt-nut assembly, or a snap structure, so that in the first locking state, the first blocking force is applied to the linkage member. In the second locked state, the first blocking force is cancelled and the linkage member is slidable relative to the locking member.
That is, in the first locked state, the link member 43 is locked to the housing 1 by the first blocking force applied by the locking mechanism, and the driving mechanism drives the inner tube 52 to slide with respect to the link member 43; in the second locking state, the first blocking force is removed, the linkage part 43 is driven by the toggle force to move so as to be locked on the driving mechanism, and the inner tube 52 is driven by the driving mechanism to synchronously rotate; in the first locking state the toggle force is withdrawn.
In addition, the torsion tube in the fine adjustment device can be omitted, and the linkage part and the transition piece can be directly connected and matched with the inner tube.
In addition, the transition piece and the linkage member may be locked in the second state in other manners, such as providing a first magnet and a second magnet on the surfaces of the transition piece and the linkage member facing each other, respectively, and locking by the magnetic attraction force of the two magnets. Further, the above-described rotation preventing mechanism may not be provided.
Example 4
The present embodiment provides a valve delivery system, which differs from any of the valve delivery systems provided in embodiments 1, 2, and 3 in that:
the body and the extension part of the shell can also be coaxially arranged, and the body and the extension part can be in other shapes as long as the operation ends of the transfer mechanism and the adjustable bending mechanism are not affected with each other.
As a further variant embodiment, the second operating member of the adjustable bending mechanism may also comprise only the driving member 33, but in this case a rotating wheel around which the proximal end of the traction wire is wound, the inner bore of which is provided with a rotating shaft, one end of which protrudes outside the housing and is fixed with a rotating cap. Or other operation components can be used, and only the traction wire needs to be driven to move. As a variation, the adjustable bending component can only comprise a traction wire, the adjustable bending pipe is not arranged, and the far end of the traction wire is fixed on the outer wall surface of the inner pipe.
Example 5
The present embodiment provides a valve delivery system, which differs from any of the valve delivery systems provided in embodiments 1, 2, 3, and 4 in that:
the transfer mechanism can also be other mechanisms, for example, a gear and rack meshing structure, and the rack is fixedly connected with the outer pipe by rotating the gear so as to drive the outer pipe to slide along the axial direction; or other structures capable of performing telescopic motion or reciprocating sliding motion are also possible.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (18)

1. A valve delivery system, comprising a housing (1), an inner tube (52) disposed within the housing (1), and a micro-adjustment device disposed on the housing (1); the fine adjustment device comprises
A drive mechanism;
a locking mechanism;
a linkage member (43) provided on the housing (1) so as to be capable of switching between a first lock state and a second lock state; the linkage part (43) is sleeved outside the inner pipe (52) in a sliding and anti-rotating manner;
in a first locking state, the linkage part (43) is locked on the shell (1) by a first blocking force exerted by the locking mechanism, and the driving mechanism drives the inner tube (52) to slide relative to the linkage part (43); in a second locking state, the first blocking force is removed, the linkage part (43) is driven by toggle force to move so as to be locked on the driving mechanism, and the inner pipe (52) is driven by the driving mechanism to synchronously rotate; in the first locking state the toggle force is withdrawn.
2. The valve delivery system according to claim 1, wherein the locking mechanism comprises a lock (45) provided on the housing (1), the lock (45) applying the first blocking force to the linkage member (43) by a 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 biased by a return bias to tend to remain in the first locked condition.
3. The valve delivery system of claim 2, wherein the locking member (45) and the linkage member (43) are provided with at least one first protrusion (452) on one of their facing surfaces, and a first locking groove (435) on the other surface for snap-fitting with the first protrusion (452);
in a first locking state, the first protrusion (452) is in plug fit with the first clamping groove (435); in a second locked state the first projection (452) is disengaged from the first card slot (435).
4. The valve delivery system of claim 3, wherein in the first locked state, the locking member (45) is fitted over the proximal end of the linkage member (43), one of the first projection (452) and the first catch (435) being provided on an inner wall surface of the locking member (45), and the other being provided on an outer wall surface of the linkage member (43); the locking piece (45) does telescopic motion along the radial direction of the inner pipe.
5. The valve delivery system according to any one of claims 1-4, wherein the drive mechanism comprises an operating member (41) movably arranged on the housing (1) between a first state and a second state, and a transition piece (42) sleeved outside the inner tube (52), wherein the transition piece (42) is arranged in linkage with the inner tube (52);
in the first state, the operating part (41) and the transition piece (42) move synchronously to drive the inner pipe (52) to slide in a linkage manner, and the linkage part (43) is in the first locking state; in the second state, the linkage part (43) is driven by toggle force to move so as to be locked on the transition piece (42), and then the linkage part is driven by the operating part (41) so as to drive the inner pipe (52) to rotate so as to be in the second locking state.
6. The valve delivery system according to claim 5, wherein the operating member (41) is slidably and rotatably provided on the housing, the operating member being in anti-rotational and slidable connection with the transition piece (42);
the driving mechanism further comprises a motion conversion piece (44) which is arranged in a linkage mode with the transition piece (42), and the motion conversion piece (44) is fixedly connected to the outside of the inner pipe (52) and used for converting the rotary motion of the transition piece into linear sliding;
in a first state, the operating member (41) drives the transition piece (42) to rotate, the motion conversion piece (44) is driven to slide on the transition piece (42) in a linkage manner, the distal end of the linkage member (43) is locked on the locking piece (45), and the proximal end of the linkage member faces the transition piece (42);
in the second state, the operating part (41) slides relative to the transition piece (42) to apply a pulling force to the linkage part, the linkage part is driven by the pulling force to slide towards the transition piece (42) and is locked on the transition piece (42), and the linkage part is driven by the synchronous rotation of the operating part (41) and the transition piece (42) to drive the inner pipe (52) to rotate.
7. The valve delivery system of claim 6, wherein the linkage member (43) is provided with a mating body; a poking body (412) is arranged on the operating component (41);
the poking body is connected with the matching body in a rotatable and anti-slip mode, and in the second state, the operating part slides to apply poking force to the matching body through the poking body; the matching body is arranged on the linkage part in a non-slip and rotatable manner;
the matching body is driven by the toggle force to synchronously slide relative to the shell; the linkage part is driven by the synchronous rotation of the operating part (41) and the transition piece (42) to rotate relative to the matching body.
8. The valve delivery system of claim 7, wherein the engagement body comprises an annular pull ring and an engagement protrusion protruding radially outward of the pull ring; the far end of the operating component is sleeved outside the near end of the shell, and the poking body is a first annular sliding groove arranged on the inner wall surface of the operating component; the linkage part is positioned in the shell, and the pull ring is rotatably sleeved in a second annular sliding groove on the periphery of the linkage part; the matching bulge penetrates through a third abdicating hole on the shell, is rotatably inserted in the second annular sliding groove and slides in the third abdicating hole under the action of the poking force; and/or
The proximal end of the transition piece is arranged in the proximal cavity of the shell and is arranged on the shell in a rotatable and anti-slip manner, and the distal end of the transition piece is arranged in the cavity of the operating part.
9. The valve delivery system of any of claims 6-8, wherein the motion converter is a first retaining nut, the transition member is a threaded tube, the first retaining nut is secured over the outer wall of the inner tube, and the first retaining nut is threaded onto the inner wall of the threaded tube; and/or
Further comprising at least one first elastic member arranged between said transition piece (42) and said operating member (41); in a second state, the first elastic piece releases energy to exert a biasing force on the operating part (41) to drive the linkage part (43) to slide towards the transition piece (42); and/or
The locking device is characterized by further comprising an anti-rotation mechanism arranged in the shell (1) and used for preventing the linkage part from being arranged on the shell in a rotation-preventing mode in a first locking state.
10. The valve delivery system of claim 9, wherein the anti-rotation mechanism comprises an anti-rotation block (17) disposed within the housing, the linkage member (43) being located between the anti-rotation block and the transition piece (42); and at least one second protrusion axially extending from one end surface of the end surfaces of the linkage part (43) and the rotation stopping seat, and second clamping grooves (4311) which are in one-to-one correspondence with the second protrusions and are in plug fit with the second protrusions are arranged on the other end surface;
in a first locking state, the second protrusion is inserted into the second clamping groove (4311), and in a second locking state, the second protrusion is separated from the second clamping groove (4311).
11. The valve delivery system according to claim 10, wherein at least one third protrusion (422) is disposed on one of the mutually facing end surfaces of the linkage member (43) and the transition member (42), and a third locking groove (4321) corresponding to the third protrusion (422) and matched with the third protrusion in a one-to-one insertion manner is disposed on the other end surface;
in a first locked state, the third projection (422) is disengaged from the third catch groove (4321); in the second locking state, the third protrusion (422) is inserted into the third slot (4321).
12. The valve delivery system according to claim 11, wherein the end surface not provided with the second or third protrusion (422) is provided with a plurality of linear elastic members (433) arranged on the same circumference;
corresponding to the respective locking state, at least one linear elastic part (433) retracts and deforms under the extrusion force of the corresponding protrusion, and a clamping groove is formed between the retracted linear elastic part (433) and the adjacent non-retracted linear elastic part (433) in a surrounding mode and is used for the insertion and matching of the protrusion.
13. The valve delivery system according to any one of claims 1-12, wherein the fine adjustment device further comprises a torsion tube (53) fixedly sleeved outside the inner tube (52), wherein the proximal end and the distal end of the inner tube (52) respectively extend out of the proximal end and the distal end of the torsion tube (53); the linkage part (43) is sleeved outside the torsion pipe (53) in a sliding and rotation-proof manner and is arranged on the inner pipe (52); 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 part (43) drives the inner tube (52) to rotate by driving the torsion tube (53) to rotate; and/or
The valve delivery system further comprises
The outer pipe (51) is sleeved outside the inner pipe (52) and is positioned in the shell (1); the distal end of the inner tube (52) extends out of the outer tube (51); and the fine adjustment device is arranged on the part of the inner tube (52) extending out of 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 pipe (51) to slide in a reciprocating mode relative to the inner pipe (52) along the axial direction of the inner pipe, and a first operating end of the first operating component is exposed out of the shell (1).
14. The valve delivery system according to claim 13, further comprising an adjustable bending mechanism provided on the housing (1), which includes an adjustable bending assembly provided outside the inner tube (52) and inside the outer tube (51), a distal end of the adjustable bending assembly being fixed to the inner tube (52), and a proximal end thereof protruding out of a proximal end of the outer tube (51) and extending in a radial bending manner along the inner tube (52); and a second operating assembly connected to the proximal end of the adjustable bending assembly;
the second operating assembly is independent of the first operating assembly and is used for driving the adjustable bending assembly to bend by a required angle; the first operating end of the first operating assembly and the second operating end of the second operating assembly are exposed out of the shell.
15. The valve delivery system according to claim 14, wherein one of the first and second operating assemblies is arranged on the housing (1) axially along an inner tube (52) and the other is arranged on the housing (1) in a direction intersecting the axial direction of the inner tube (52).
16. The valve delivery system according to claim 14 or 15, wherein the second operating assembly comprises a driving member (33) rotatably provided on the housing (1), a proximal end of the driving member (33) being the second operating end, and a proximal end of the adjustable bending assembly being connected to a distal end of the driving member (33); the driving piece (33) drives the proximal end of the adjustable bending component to move through rotation; and/or
The first operating assembly comprises
The rotating body (21) is rotatably arranged on the inner wall of the shell (1), and the far end of the rotating body (21) is bent into a yielding hole in the shell (1) and serves as the first operating end;
a slider (22) screw-fitted in the rotary body; the sliding piece (22) is fixedly sleeved on the outer pipe (51); and/or
The adjustable bending component comprises
An adjustable elbow (31) which is sleeved on the inner pipe (52) and is positioned in the outer pipe (51), and the proximal end of the adjustable elbow (31) extends out of the proximal end of the outer pipe (51); and
and the pull wire (32) is made of a bendable material, the distal end of the pull wire is fixed on the adjustable bent pipe (31), the proximal end of the pull wire extends outwards after passing through a part of the adjustable bent pipe, extending out of the proximal end of the outer pipe, along the radial direction of the inner pipe (52), and the pull wire is connected to the second operating assembly.
17. The valve delivery system of claim 16, further comprising a first fixed seat (71) disposed within the housing (1), wherein the proximal end of the adjustable elbow (31) is sealingly fixed to an inner bore of the first fixed seat (71) by a first seal;
a fifth mounting hole is formed in the first fixing seat (71) along the radial direction of the inner pipe (52), and a sixth mounting hole communicated with the fifth mounting hole is formed in the position, corresponding to the fifth mounting hole, of the shell (1); and
and the first one-way valve (61) is arranged in the fifth mounting hole and the sixth mounting hole, a fluid outlet of the first one-way valve (61) is communicated with the inner cavity of the adjustable elbow (31), and a fluid inlet of the first one-way valve is positioned outside the shell (1).
18. The valve delivery system of claim 17, further comprising a second holder (72) disposed within the housing (1), the proximal end of the outer tube (51) being sealed by a second seal and slidably disposed on an inner bore of the second holder (72);
the near end of the second fixed seat (72) is fixedly connected with the far end of the first fixed seat (71), and the near end of the adjustable bent pipe (31) penetrates through the second fixed seat (72) and then is fixed on the first fixed seat (71);
a seventh mounting hole is formed in the second fixing seat (72) along the radial direction of the inner pipe (52), and an eighth mounting hole communicated with the seventh mounting hole is formed in the position, corresponding to the seventh mounting hole, of the shell (1);
and a second one-way valve (62) arranged in the seventh mounting hole and the eighth mounting hole, wherein a fluid outlet of the second one-way valve (62) is communicated with the inner cavity of the outer tube (51), and a fluid inlet of the second one-way valve is positioned outside the shell (1).
CN202010692873.9A 2020-07-17 2020-07-17 Valve delivery system Pending CN111714251A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113616383A (en) * 2021-08-13 2021-11-09 上海纽脉医疗科技股份有限公司 Transvascular pathway valve delivery system
CN114533348A (en) * 2022-04-27 2022-05-27 杭州德晋医疗科技有限公司 Wire take-up system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113616383A (en) * 2021-08-13 2021-11-09 上海纽脉医疗科技股份有限公司 Transvascular pathway valve delivery system
CN113616383B (en) * 2021-08-13 2023-12-15 上海纽脉医疗科技股份有限公司 Transvascular path valve delivery system
CN114533348A (en) * 2022-04-27 2022-05-27 杭州德晋医疗科技有限公司 Wire take-up system

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