CN114903655B - Prosthetic valve and prosthetic valve implantation system - Google Patents
Prosthetic valve and prosthetic valve implantation system Download PDFInfo
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- CN114903655B CN114903655B CN202210524832.8A CN202210524832A CN114903655B CN 114903655 B CN114903655 B CN 114903655B CN 202210524832 A CN202210524832 A CN 202210524832A CN 114903655 B CN114903655 B CN 114903655B
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- fixing support
- valve
- main body
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- 238000002513 implantation Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 59
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000003245 working effect Effects 0.000 abstract description 4
- 210000000078 claw Anatomy 0.000 description 6
- 239000007943 implant Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 208000018578 heart valve disease Diseases 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 2
- 241001631457 Cannula Species 0.000 description 1
- 230000002308 calcification Effects 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
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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
- A61F2/2412—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 with soft flexible valve members, e.g. tissue valves shaped like natural valves
- A61F2/2418—Scaffolds therefor, e.g. support stents
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
Abstract
The invention discloses a prosthetic valve and a prosthetic valve implantation system, wherein the prosthetic valve comprises a main body support, a first fixing support and a second fixing support are arranged at the first end of the main body support, a third fixing support is arranged at the second end of the main body support, at least three first locking supports are arranged on at least one of the first fixing support and the second fixing support, the end part of each first locking support is provided with a first locking end, at least three second locking supports are arranged on the third fixing support, and the end part of each second locking support is provided with a second locking end. By adopting the artificial valve implanting device, when the artificial valve is implanted, the autologous valve leaflets can be conveniently captured, the working effect of the artificial valve can be evaluated in advance, and the artificial valve can be conveniently repositioned.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a prosthetic valve and a prosthetic valve implantation system.
Background
Valvular heart disease is a common valvular heart disease, and the incidence rate of valvular heart disease gradually increases with age.
The artificial valve products are mainly divided into two types: balloon-expandable valves and self-expanding valves:
the balloon-expandable valve is characterized in that a balloon is placed in a transcatheter artificial valve, and the valve is delivered into the body through a delivery system and then pressurized to expand the balloon and then prop open the valve and be anchored at a lesion position;
the self-expanding valve is first radially compressed and then set inside the sheath of the conveying system, the sheath carries the compressed valve and enters the pathological change position of heart from blood vessel, and the handle of the conveying system is then used to fix the self-expanding valve and make the sheath back relatively to the valve so as to release the valve. After release, the self-expansion property of the stent in the self-expansion valve is utilized (the stent of the self-expansion valve usually adopts shape memory alloy, the stent can automatically return to the shape of the product when the stent is above the phase transition temperature Af), so that the whole self-expansion valve is uniformly expanded and stably implanted at the position of the autologous valve ring of the patient, and the original valve is replaced.
Existing prosthetic valves currently face three major problems:
1. because the heart still lasts during the art, patient's autologous valve leaf is in the motion state that lasts to open and shut, and valve leaf itself does not have calcification, and the degree of freedom of movement is great, and current artificial valve has the degree of difficulty in the process of catching patient's autologous valve leaf.
2. Before the complete unlocking, the working effect of the transcatheter artificial valve cannot be evaluated in advance, for example, whether the opening and closing of the valve orifice are normal or not, whether the valve leakage prevention design at the skirt edge position plays a role or not, and the effects can be evaluated only after the final release operation of the transcatheter artificial valve, namely, the operator can determine the using effect after losing control over the transcatheter artificial valve.
3. If the implanted position or positioning effect of the instrument is not ideal, the instrument cannot be recycled and positioned again, which is not favorable for the operation with great difficulty, and the fault tolerance of the instrument needs to be improved urgently.
Disclosure of Invention
The invention aims to provide a prosthetic valve and a prosthetic valve implantation system.
The invention provides a prosthetic valve:
the artificial valve comprises a main body support, wherein a first fixing support and a second fixing support are arranged at the first end of the main body support, a third fixing support is arranged at the second end of the main body support, at least three first locking supports are arranged on at least one of the first fixing support and the second fixing support, the end part of each first locking support is provided with a first locking end, at least three second locking supports are arranged on the third fixing support, and the end part of each second locking support is provided with a second locking end.
In one embodiment, the first fixing bracket is located inside the second fixing bracket, the first locking bracket is located on the first fixing bracket, and at least three clamping ends are arranged on the second fixing bracket and are oppositely matched with the first locking bracket.
In one embodiment, in a natural state, the radial dimension of three of the clamping ends is smaller than or equal to the radial dimension of three of the first locking brackets.
In one embodiment, the first locking bracket is located on the first stationary bracket; the main body support comprises a main connecting rod and a connecting support arm, and the second fixing support and the third fixing support are connected through the connecting support arm; the first fixed support is connected with the third fixed support through a main connecting rod, and the connecting support arm is elastically connected with the main connecting rod.
In one embodiment, the connecting arm is at least partially located at an end of the main connecting rod adjacent to the third fixed bracket.
In one embodiment, the third fixing bracket is connected to the second end of the main connecting rod, and the second fixing bracket is connected to the third fixing bracket through a connecting arm.
In one embodiment, the connecting arm includes a main body connecting section, an end portion first folding section, and an end portion second folding section, the second ends of the end portion first folding section and the end portion second folding section are connected, the second fixing bracket is connected with the third fixing bracket sequentially through the main body connecting section and the end portion first folding section, the main body connecting section conforms to the direction of the main connecting rod, and the directions of the end portion first folding section and the end portion second folding section conform to each other.
In one embodiment, a plurality of suture holes are provided in the main connecting bar in a longitudinal direction.
In one embodiment, in a natural state, the first end of the second fixing bracket is close to the first fixing bracket, and at least three second locking brackets are mutually expanded.
In one embodiment, in a natural state, a yielding notch is formed in one side, close to the second end, of the first fixing support, and the first end of the second fixing support is in a trend conforming to the inner side of the yielding notch.
In one embodiment, a developer is disposed on at least one of the first locking end, the second locking end, and the clamping end.
The invention also provides a prosthetic valve implantation system:
the artificial valve implanting system comprises an artificial valve and a valve conveying device,
the artificial valve comprises a main body support, wherein a first fixing support and a second fixing support are arranged at the first end of the main body support, a third fixing support is arranged at the second end of the main body support, at least three first locking supports are arranged on at least one of the first fixing support and the second fixing support, the end part of each first locking support is provided with a first locking end, at least three second locking supports are arranged on the third fixing support, and the end part of each second locking support is provided with a second locking end;
the valve conveying device comprises a conveying pipe, wherein a first locking mechanism and a second locking mechanism are respectively arranged on the conveying pipe along the longitudinal direction, the first locking mechanism is located at the front end of the second locking mechanism, the first locking mechanism corresponds to at least three first locking supports, and the second locking mechanism corresponds to at least three second locking supports.
The technical scheme provided by the invention has the following advantages and effects:
the first end of the main body support of the artificial valve is provided with a first fixing support and a second fixing support, when the artificial valve is released, the autologous valve leaflets can be locked through the first fixing support and the second fixing support, even if the autologous valve leaflets are in a motion state of continuous opening and closing, the first locking support of the artificial valve is released to different degrees through a first locking mechanism of the valve conveying device as required, the working effect of the artificial valve can be evaluated in advance, such as whether the opening and closing of a valve orifice are normal, whether the valve leakage prevention design at the skirt edge position plays a role and the like; because still be equipped with second locking support at current artificial valve second end, when having the release, if the inaccurate condition in location appears, can retrieve and carry out the repeated positioning to artificial valve through valve conveyor, great improvement operation's convenience, its fault-tolerance obtains improving.
Drawings
FIG. 1 is a block diagram of a prosthetic valve according to an embodiment of the present invention;
FIG. 2 is a block diagram of a stent for a prosthetic valve according to an embodiment of the present invention;
FIG. 3 is an end view of a prosthetic valve according to an embodiment of the present invention when open;
FIG. 4 is an end view of a prosthetic valve according to an embodiment of the present invention when closed;
FIG. 5 is a first partial view of a stent of a prosthetic valve according to an embodiment of the present invention;
FIG. 6 is a second partial view of a stent of a prosthetic valve according to an embodiment of the present invention;
FIG. 7 is a third partial view of a stent of a prosthetic valve according to an embodiment of the present invention;
FIG. 8 is a fourth partial view of a stent of a prosthetic valve according to an embodiment of the present invention;
FIG. 9 is a block diagram of a valve delivery device according to an embodiment of the present invention;
FIG. 10 is a cross-sectional view of a valve delivery device according to an embodiment of the present invention;
FIG. 11 is a partial cross-sectional view of a valve delivery device according to an embodiment of the present invention in a locked state;
FIG. 12 is a partial cross-sectional view of a valve delivery device according to an embodiment of the present invention in an unlocked state;
fig. 13 is a first enlarged partial view of fig. 12;
FIG. 14 is a second enlarged partial view of FIG. 12;
FIG. 15 is a first enlarged partial structural view of the first or second locking mechanism in an embodiment of the present invention;
FIG. 16 is a second enlarged partial view of the first or second locking mechanism in an embodiment of the present invention;
FIG. 17 is a third enlarged partial block diagram of the first or second locking mechanism in an embodiment of the present invention;
FIG. 18 is a schematic view of a prosthetic valve implantation system according to an embodiment of the present invention;
FIG. 19 is a close-up view of a prosthetic valve implant system during release according to an embodiment of the present invention;
FIG. 20 is a schematic view of a prosthetic valve implant system according to an embodiment of the present invention in a first, released state;
FIG. 21 is a schematic view of a prosthetic valve implant system according to an embodiment of the present invention in a second, released state;
FIG. 22 is a schematic view of a prosthetic valve implant system according to an embodiment of the present invention in a third, released state;
FIG. 23 is a schematic view of a prosthetic valve implant system according to an embodiment of the present invention in a fourth, released state;
description of the reference numerals:
10. a main body bracket is arranged on the upper portion of the main body,
201. a connecting support arm 2011, a main body connecting section, 2012, a first back-folding section at the end part, 2013, a second back-folding section at the end part, 2014, an elastic folding point, 202, a main connecting rod, 2021 and a suture hole,
21. a first fixing bracket 211, a first locking bracket 2111, a first supporting arm 2112, a second supporting arm 212 and an abdicating notch,
22. a second fixing bracket, 221, a clamping end,
23. a third fixing bracket 231, a second locking bracket,
24. a developing member for developing a color image of a color image,
251. a first locking end, 252, a second locking end,
26. the shape of the valve leaf is the same as the shape of the valve leaf,
27. the skirt edge is provided with a skirt edge,
28. the self-body valve is provided with a self-body valve,
29. the blood vessels of the heart are connected with each other,
41. delivery tube, 411, first cannula, 412, second cannula, 413, third cannula, 414, fourth cannula, 415, fifth cannula, 416, sixth cannula,
42. a first locking mechanism 421, a first locking portion 422, a second locking portion,
43. a second locking mechanism 431, a third locking portion 432, a fourth locking portion,
44. at the end of the operation, the operation terminal,
451. a first sheath 452, a second sheath,
461. locking seat 4611, locking claw 462, convex ring 463, locking groove 4632, ring groove 464, inner locking seat 4641, positioning convex 465 and outer locking seat,
471. a first lock position, 472, a second lock position.
Detailed Description
In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.
As used herein, "first and second" \ 8230 "are used unless otherwise indicated or defined and are used merely to distinguish between names and do not denote any particular quantity or order.
As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.
It should be noted that "fixed" and "connected" in this document may be directly fixed or connected to one element or may be indirectly fixed or connected to one element.
As shown in fig. 18-23, a prosthetic valve implantation system is provided, which includes a prosthetic valve and a valve delivery device.
As shown in fig. 1 to 8, the artificial valve includes a main body support 10, a first fixing support 21 and a second fixing support 22 are arranged at a first end of the main body support 10, a third fixing support 23 is arranged at a second end of the main body support 10, three first locking supports 211 are arranged on the first fixing support 21, a first locking end 251 is arranged at an end of the first locking support 211, three second locking supports 231 are arranged on the third fixing support 23, and a second locking end 252 is arranged at an end of the second locking support 231;
as shown in fig. 9 to 17, the valve delivery device includes a delivery tube 41, the delivery tube 41 is provided with a first locking mechanism 42 and a second locking mechanism 43 respectively along the longitudinal direction, the first locking mechanism 42 is located at the front end position of the second locking mechanism 43, the first locking mechanism 42 corresponds to three first locking brackets 211, and the second locking mechanism 43 corresponds to three second locking brackets 231.
When the artificial valve is implanted into a cardiovascular 29, the first end of the main body support 10 of the artificial valve is provided with the first fixing support 21 and the second fixing support 22, when the artificial valve is released, the autologous valve leaflets can be locked through the first fixing support 21 and the second fixing support 22, even if the autologous valve leaflets are in a motion state of continuous opening and closing, the first locking support 211 of the artificial valve can be released to different degrees through the first locking mechanism 42 of the valve conveying device according to requirements, and the working effect of the artificial valve can be evaluated in advance, such as whether the opening and closing of a valve orifice are normal, whether the valve leakage prevention design at the skirt 27 position plays a role, and the like; because still be equipped with second locking support 231 at current artificial valve second end, when having the release, if the inaccurate condition in location appears, can retrieve and carry out the repeated positioning to artificial valve through valve conveyor, great improvement operation's convenience, its fault-tolerance obtains improving.
The structure of the artificial valve will be described in detail below with reference to fig. 1 to 9:
the first fixing bracket 21 is located inside the second fixing bracket 22, the first locking bracket 211 is located on the first fixing bracket 21, and three clamping ends 221 are provided on the second fixing bracket 22, wherein the clamping ends 221 are oppositely matched with the first locking bracket 211. In a natural state, the radial dimension of the three clamping ends 221 is smaller than or equal to the radial dimension of the three first locking brackets 211. When positioning is performed, the first fixing support 21 and the second fixing support 22 are mutually opened, the second fixing support 22 is inserted into the root of the autologous valve 28 of the human body, when the first fixing support 21 and the second fixing support 22 are clamped with each other, the artificial valve can be fixed, the retraction and the release of the first fixing support 21 and the second fixing support 22 are controlled by the first locking mechanism 42 and the second locking mechanism 43, the first fixing support 21 is controlled by the first locking mechanism 42, and the second fixing support 22 is indirectly controlled in a mode of a seesaw by the second locking mechanism 43, which will be described in detail below.
In a natural state, the first end of the second fixing bracket 22 is adjacent to the first fixing bracket 21, and the three second locking brackets 231 are opened. In a natural state, an abdicating notch 212 is arranged on one side of the first fixing bracket 21 close to the second end, and the first end of the second fixing bracket 22 is in line with the inner side of the abdicating notch 212. Specifically, the first end of the first fixing bracket 21 is provided with at least three first supporting arms 2111 and at least three second supporting arms 2112, the first ends of the first supporting arms 2111 and the second supporting arms 2112 form a group, the first supporting arms 2111 and the second supporting arms 2112 of each group form an abdicating notch 212, the abdicating notch 212212 is matched with the second fixing bracket 22, and the first supporting arms 2111 and the second supporting arms 2112 play a supporting role on one hand and can be matched with the second fixing bracket 22 well on the other hand, so that interference is reduced, and the autologous valve can be conveniently clamped.
The second locking mechanism 43 is used for controlling the locking or unlocking of the third fixing bracket 23, and has a principle similar to that when the first locking mechanism 42 is configured to lock or unlock the first fixing bracket 21.
On the other hand, the second fixing support 22 is connected to the third fixing support 23 sequentially through the main body connecting section 2011 and the first end part folding section 2012 of the connecting support arm 201, and a "seesaw" type structure is formed between the second fixing support 22 and the third fixing support 23 through the above structure, that is: when the third fixing bracket 23 is folded, the three clamping ends 221 of the second fixing bracket 22 are mutually opened; conversely, when the third fixing support 23 is unfolded, the three clamping ends 221 of the second fixing support 22 are folded, that is, the folding and unfolding of the third fixing support 23 are controlled by the second locking mechanism 43, so that the three clamping ends 221 of the second fixing support 22 are controlled by the seesaw-type structure, and the position and motion control of the three parts of the artificial valve can be realized by the two locking mechanisms.
The main body support 10 includes a connecting arm 201 and a main connecting rod 202, the first fixing support 21 is connected to the third fixing support 23 through the main connecting rod 202, and when the third fixing support 23 and/or the second fixing support 22 are controlled by the second locking mechanism 43, excessive interference on the first fixing support 21 is not generated.
The aforementioned developing member 24 can be conveniently captured by X-ray to obtain the position information of the corresponding components, so as to facilitate the observation and position adjustment of the operator, and it can be understood that the developing member 24 can be disposed at the clamping end 221, and also can be disposed at the first locking end 251 and the second locking end 252 as required.
The structure of the valve delivery device will be described in detail below with reference to fig. 9 to 17:
the valve delivery device comprises a delivery pipe 41, wherein the delivery pipe 41 is respectively provided with a first locking mechanism 42 and a second locking mechanism 43 along the longitudinal direction, the first locking mechanism 42 is positioned at the front end position of the second locking mechanism 43, the first locking mechanism 42 is provided with a first locking part 421 and a second locking part 422, the first locking part 421 corresponds to the second locking part 422 to form a first locking position 471, the second locking mechanism 43 is provided with a third locking part 431 and a fourth locking part 432, and a second locking position 472 is formed between the third locking part 431 and the fourth locking part 432.
The valve conveying device comprises a first locking mechanism 42 and a second locking mechanism 43, wherein a first locking position 471 is formed at the first locking mechanism 42, a second locking position 472 is formed at the second locking mechanism 43, when the artificial valve is conveyed, the front end of the artificial valve and the rear end of the artificial valve can be respectively controlled, the control is more flexible, the functions are more multiple, and various requirements in the conveying process of the artificial valve can be met; on the other hand, in this embodiment, the diameter of the circumference where the three valve leaflets 26 are located in the unlocked state is Φ 1, at this time, the valve is in the complete working state, and in the full-height pre-release state (the valve is completely separated from the sheath, but the locking end of the locking stent is still locked together) when the prosthetic valve is placed, the diameter of the circumference where the uppermost edge of the fixing portion of the three valve leaflets 26 is located is Φ 2, and at this time, Φ 2 is 74% to 120% of Φ 1, which can ensure that the valve can reach the basic working state in the locked state, and is used for a doctor to determine the working condition of the implanted valve in advance, thereby better determining the subsequent adjustment direction of the implantation strategy, without completely unlocking and releasing the prosthetic valve, and under the condition that the prosthetic valve does not meet the requirements, the prosthetic valve can be conveniently recovered.
In order to realize the control of the first locking mechanism 42 and the second locking mechanism 43, the delivery tube 41 at least includes two layers of sleeves sleeved with each other, the first locking portion 421 and the second locking portion 422 are respectively connected to the two sleeves, and/or the third locking portion 431 and the fourth locking portion 432 are respectively connected to the two sleeves, specifically:
the delivery pipe 41 includes a first sleeve 411, a second sleeve 412, a third sleeve 413 and a fourth sleeve 414, the first sleeve 411, the second sleeve 412, the third sleeve 413 and the fourth sleeve 414 are sequentially sleeved from inside to outside, the first locking portion 421 is connected to the front end of the first sleeve 411, the second locking portion 422 is connected to the front end of the second sleeve 412, the third locking portion 431 is connected to the front end of the third sleeve 413, and the fourth locking portion 432 is connected to the front end of the fourth sleeve 414.
The cannulas of the delivery tube 41 are controlled by the operation end 44, and when the first locking part 421 moves towards the rear end relative to the second locking part 422, the first locking part 421 and the second locking part 422 are in a locking state, and when the fourth locking part 432 moves towards the front end relative to the third locking part 431, the fourth locking part 432 and the third locking part 431 are in a locking state.
The delivery tube 41 further includes a fifth sleeve 415, the fifth sleeve 415 is sleeved outside the fourth sleeve 414, a first sheath 451 is further disposed at a front end of the fifth sleeve 415, and the first sheath 451 extends at least to a vicinity of the fourth locking portion 432. The delivery tube 41 further includes a sixth sleeve 416, the sixth sleeve 416 is sleeved in the first sleeve 411, a second sheath 452 is further disposed at the front end of the sixth sleeve 416, and the second sheath 452 extends at least to the vicinity of the first locking portion 421. The first sheath 451 is opposite to the second sheath 452. In the fully retracted state, the first locking mechanism 42 is retracted into the first sheath 451, the second locking mechanism 43 is retracted into the second sheath 452, and the first sheath 451 and the second sheath 452 are relatively fully closed, so that the prosthetic valve can be conveniently pushed or taken out, and the damage to the tissue of the human body can be reduced. The sixth sleeve 416 may be integrally formed with the second sheath 452, or may be separately formed, and the diameter of the sixth sleeve 416 may be smaller than the diameter of the second sheath 452, or may be equal to the diameter of the second sheath 452.
The structures of the first locking mechanism 42 and the second locking mechanism 43 can be seen in fig. 13 to 17, the first locking mechanism 42 is used for locking or unlocking three first locking ends 251 of the first fixing bracket 21, the second locking mechanism 43 is used for locking or unlocking three second locking ends 252 of the third fixing bracket 23, and the structures thereof are not limited, the following three possible structural forms are provided in the present application, and the following description is given by taking the first locking mechanism 42 as an example only:
as shown in fig. 15, the first locking portion 421 includes a locking seat 461, at least three locking claws 4611 are arranged on the locking seat 461, the second locking portion 422 is a convex ring 462, and in the locking state, the convex ring 462 is located at a position radially inward of the locking claws 4611 to form locking.
As shown in fig. 16, the first locking portion 421 includes a locking base 461, at least three locking claws 4611 are provided on the locking base 461 in a rearward direction, the second locking portion 422 includes a collar 462, a locking groove 463 is provided on the collar 462, the locking groove 463 is engaged with the locking claws 4611, an annular groove 4632 is provided on the collar 462, and in a locking state, the front ends of the locking claws 4611 are inserted into the locking grooves 463 to form locking.
As shown in fig. 17, the first locking portion 421 includes an outer lock holder 465, an accommodating space is provided in the middle of the outer lock holder 465, the second locking portion 422 is an inner lock holder 464, a positioning protrusion 4641 is provided on the inner lock holder 464, when the first locking portion is in a locking state, the inner lock holder 464 is located in the outer lock holder 465 to form locking, and at this time, the positioning protrusion 4641 is locked in the lock hole of the first locking end 251.
The structure of the second locking mechanism 43 can refer to the structure of the first locking mechanism 42, and will not be described in detail here.
The process of implanting a prosthetic valve using the valve delivery device of the present embodiment is shown in fig. 20-23.
As shown in fig. 20, the valve delivery device is used to push the prosthetic valve to a predetermined position, push the sixth sleeve 416, and gradually withdraw the third fixing support 23 from the second sheath 452 to release the third fixing support 23, while the second locking end 252 is still in the locked state, and slowly push the valve delivery device to make the clamping end 221 of the second fixing support 22 extend into the outer root of the native valve 28.
As shown in fig. 21, the fifth sleeve 415 is pushed to move the first sheath 451 relatively, and the first fixing bracket 21 is gradually withdrawn from the first sheath 451 and released, and at this time, the first locking end 251 is still in the locking state.
As shown in fig. 22, after the third fixing support 23 is released, when the second locking end 252 is still in the locked state, it can be observed whether the state of the valve leaflet 26 meets the requirement, and if the state of the valve leaflet 26 meets the requirement, the second locking mechanism 43 is unlocked, and the second locking end 252 is completely opened; if the valve leaflet 26 is out of order or the release position is deviated, the delivery device can be recovered and released again by controlling the first locking mechanism 42, the second locking mechanism 43, the first sheath 451, and the second sheath 452.
As shown in fig. 23, the first locking mechanism 42 is unlocked, the first locking end 251 is fully opened, the native valve 28 is fully clamped by the first locking end 251 and the clamping end 221, the whole prosthetic valve is fully fixed, the implantation is completed, and the delivery device is retracted and recovered.
The material of the artificial valve support can be made of memory alloy such as nickel-titanium alloy, and the material of the valve conveying device can be made of metal materials such as high polymer materials and stainless steel.
The above examples are not intended to be exhaustive of the invention and there may be many other embodiments not listed. Any replacement or improvement made without departing from the concept of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The artificial valve is characterized by comprising a main body support, wherein a first fixing support and a second fixing support are arranged at the first end of the main body support, a third fixing support is arranged at the second end of the main body support, at least three first locking supports are arranged on at least one of the first fixing support and the second fixing support, the end part of each first locking support is provided with a first locking end, at least three second locking supports are arranged on the third fixing support, and the end part of each second locking support is provided with a second locking end;
the first locking bracket is positioned on the first fixed bracket; the main body support comprises a main connecting rod and a connecting support arm, and the second fixing support and the third fixing support are connected through the connecting support arm; the first fixed support is connected with the third fixed support through a main connecting rod, and the connecting support arm is elastically connected with the main connecting rod;
the connecting support arm comprises a main body connecting section, a first end part folding section and a second end part folding section, the second ends of the first end part folding section and the second end part folding section are connected, the second fixing support is connected with the third fixing support through the main body connecting section and the first end part folding section in sequence, the main body connecting section is in accordance with the trend of the main connecting rod, and the trend of the first end part folding section and the second end part folding section is in accordance with the trend of the main connecting rod.
2. The prosthetic valve of claim 1, wherein the first fixation stent is positioned inside the second fixation stent, the first locking stent is positioned on the first fixation stent, and at least three clamping ends are provided on the second fixation stent, the clamping ends being in opposing engagement with the first locking stent.
3. The prosthetic valve of claim 2, wherein in a natural state, three of the clamping ends have a radial dimension that is less than or equal to a radial dimension of three of the first locking stents.
4. The prosthetic valve of claim 1, wherein the connecting arm is at least partially located at an end of the main connecting rod adjacent to the third fixed support.
5. The prosthetic valve of claim 4, wherein the third fixed support is coupled to the second end of the main linkage rod, and the second fixed support is coupled to the third fixed support by a coupling arm.
6. The prosthetic valve of claim 4, wherein a plurality of suture holes are provided in the main attachment stem in a longitudinal direction.
7. The prosthetic valve of claim 4, wherein the first end of the second fixation stent is proximate the first fixation stent in a natural state, and wherein at least three of the second locking stents are expanded relative to each other.
8. The prosthetic valve of claim 4, wherein in a natural state, the first end of the first fixation stent is provided with a notch at a side close to the second end, and the first end of the second fixation stent is configured to conform to an inner side of the notch.
9. The prosthetic valve of any one of claims 1-3, wherein a developer is disposed on at least one of the first locking end, the second locking end, and the clamping end.
10. The artificial valve implantation system is characterized by comprising an artificial valve and a valve conveying device,
the artificial valve comprises a main body support, wherein a first fixing support and a second fixing support are arranged at the first end of the main body support, a third fixing support is arranged at the second end of the main body support, at least three first locking supports are arranged on at least one of the first fixing support and the second fixing support, the end part of each first locking support is provided with a first locking end, at least three second locking supports are arranged on the third fixing support, and the end part of each second locking support is provided with a second locking end;
the first locking bracket is positioned on the first fixed bracket; the main body support comprises a main connecting rod and a connecting support arm, and the second fixing support and the third fixing support are connected through the connecting support arm; the first fixed support is connected with the third fixed support through a main connecting rod, and the connecting support arm is elastically connected with the main connecting rod;
the connecting support arm comprises a main body connecting section, an end part first folding section and an end part second folding section, wherein the second ends of the end part first folding section and the end part second folding section are connected, the second fixing support is connected with the third fixing support through the main body connecting section and the end part first folding section in sequence, the main body connecting section is in accordance with the trend of the main connecting rod, and the trends of the end part first folding section and the end part second folding section are in accordance with each other;
the valve conveying device comprises a conveying pipe, wherein a first locking mechanism and a second locking mechanism are respectively arranged on the conveying pipe along the longitudinal direction, the first locking mechanism is located at the front end of the second locking mechanism, the first locking mechanism corresponds to at least three first locking supports, and the second locking mechanism corresponds to at least three second locking supports.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210524832.8A CN114903655B (en) | 2022-05-13 | 2022-05-13 | Prosthetic valve and prosthetic valve implantation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210524832.8A CN114903655B (en) | 2022-05-13 | 2022-05-13 | Prosthetic valve and prosthetic valve implantation system |
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| CN114903655A CN114903655A (en) | 2022-08-16 |
| CN114903655B true CN114903655B (en) | 2023-04-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE202008018589U1 (en) * | 2007-09-26 | 2016-03-14 | St. Jude Medical, Inc. | Foldable heart valve prostheses |
| US8313525B2 (en) * | 2008-03-18 | 2012-11-20 | Medtronic Ventor Technologies, Ltd. | Valve suturing and implantation procedures |
| WO2016097337A1 (en) * | 2014-12-19 | 2016-06-23 | Transcatheter Technologies Gmbh | Minimally invasive mitral valve replacement with brim |
| CN105496606A (en) * | 2016-01-11 | 2016-04-20 | 北京迈迪顶峰医疗科技有限公司 | Aortic valve membrane device conveyed through catheter |
| CN114081669A (en) * | 2020-08-25 | 2022-02-25 | 北京市普惠生物医学工程有限公司 | Prosthetic valve and valve delivery system |
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