CN113855337A - Mitral valve repair implantation system - Google Patents
Mitral valve repair implantation system Download PDFInfo
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- CN113855337A CN113855337A CN202111480004.0A CN202111480004A CN113855337A CN 113855337 A CN113855337 A CN 113855337A CN 202111480004 A CN202111480004 A CN 202111480004A CN 113855337 A CN113855337 A CN 113855337A
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- leg
- distance
- mitral valve
- valve repair
- barrel
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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
-
- 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
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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
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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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0008—Fixation appliances for connecting prostheses to the body
- A61F2220/0016—Fixation appliances for connecting prostheses to the body with sharp anchoring protrusions, e.g. barbs, pins, spikes
Abstract
The invention provides a mitral valve repair implantation system, and relates to the technical field of medical instruments. The mitral valve repair implantation system comprises a connecting seat, a distance adjusting mechanism and a plurality of implantation supporting legs; the two ends of the implanted supporting leg are respectively a fixed end and a free end, the fixed ends are arranged on the connecting seat, all the fixed ends are distributed in an annular shape, all the free ends are positioned on the same side of the connecting seat, and the free ends are used for implanting the screw body; at least two adjacent implantation supporting legs are provided with distance adjusting mechanisms which are used for changing the distance between two adjacent free ends. According to the mitral valve repair implantation system, the plurality of implantation support legs for implanting the spiral nail body are respectively arranged into a structure with one end fixed and the other end freely extending, and the distance between any two adjacent free ends can be adjusted by using the distance adjusting mechanism, so that the mitral valve repair operation has the effects of high efficiency and reliability in operation, accurate positioning of the spiral nail body and free controllability.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a mitral valve repair implantation system.
Background
The Mitral Valve (Mitral Valve), the left atrioventricular Valve, is attached to the left fibrous atrioventricular ring and is formed by a fold in the endocardium. The mitral valve acts to tightly close the atrioventricular orifice during ventricular contraction, preventing blood from flowing back into the left atrium. When the mitral valve is damaged and regurgitation of blood occurs, mitral valve repair is usually performed clinically on patients.
FIG. 1 is a schematic view of a conventional mitral valve repair implant system shown in an expanded configuration; fig. 2 is a schematic view of a conventional mitral valve repair implant system in a collapsed configuration. As shown in fig. 1 and 2, a mitral valve repair implantation system used in a conventional mitral valve repair operation includes a plurality of implantation legs 300 distributed in a wave shape, a screw body 400 is disposed at a trough position of the wave shape, and after the screw body 400 is screwed into a mitral valve edge, a distance between ends of two adjacent screw bodies 400 is reduced by adjusting distance adjusting nuts 201 disposed on two adjacent implantation legs 300, so as to finally achieve a purpose of mitral valve closure.
However, in the conventional mitral valve repair implantation system, since the respective implant legs 300 are fixed to each other by splicing, and are pulled and restricted from each other, the process of screwing the pitch nut 201 has a low operation efficiency for each screw body 400, and the controllability of the implant position of the screw body 400 is poor.
Disclosure of Invention
The invention provides a mitral valve repair implantation system, which aims to solve the problems in the prior art, and has the advantages of high efficiency and reliability in operation, accurate positioning of a spiral nail body, freedom and controllability.
The invention is realized by the following steps:
a mitral valve repair implantation system comprises a connecting seat, a distance adjusting mechanism and a plurality of implantation supporting legs; the two ends of the implantation supporting leg are respectively a fixed end and a free end, the fixed ends are arranged on the connecting seat, all the fixed ends are distributed in an annular shape, all the free ends are positioned on the same side of the connecting seat, and the free ends are used for implanting the screw body; the distance adjusting mechanism is arranged on at least two adjacent implantation supporting legs and used for changing the distance between two adjacent free ends.
When the mitral valve repair implantation system is used, the spiral nail body to be implanted is positioned at the free ends of the implantation supporting legs, the fixed ends of the implantation supporting legs are arranged on the connecting seat, and the free ends are distributed on the same side of the connecting seat in an uncertain position distribution mode. In order to align each free end with the position where the screw body is to be implanted, the distance between two adjacent free ends can be changed by using the distance adjusting mechanism, and since the distance between one pair or even at most of two adjacent free ends can be changed, a plurality of free ends can be finally positioned on the position where the screw body is to be implanted in a one-to-one correspondence mode in general, and the mitral valve repairing operation can be accurately and efficiently completed. In the operation process, the spiral nail body is positioned at the free end of the implanted supporting leg, and the position adjustment of the spiral nail body is not limited by the traction of the other free ends, so that the positioning of the spiral nail body is more accurate, free and controllable, and the mitral valve repair operation is more efficient and reliable.
Furthermore, the number of the implanted legs is four, and the four implanted legs are respectively a first leg, a second leg, a third leg and a fourth leg along the clockwise direction; wherein the distance adjusting mechanism is arranged on the first supporting leg and the second supporting leg; or the distance adjusting mechanisms are respectively arranged on the first supporting leg, the second supporting leg, the third supporting leg and the fourth supporting leg; or the distance adjusting mechanisms are respectively arranged on the first supporting leg and the second supporting leg, the third supporting leg and the fourth supporting leg, and the first supporting leg and the fourth supporting leg; or the distance adjusting mechanisms are respectively arranged on the first supporting leg and the second supporting leg, on the third supporting leg and the fourth supporting leg, on the first supporting leg and the fourth supporting leg, on the second supporting leg and on the third supporting leg. The technical effects are as follows: at the moment, the distance between the free ends of any two adjacent supporting legs and any two pairs of adjacent supporting legs in the four implanted supporting legs can be changed through the distance adjusting mechanism, and the spiral nail body can be ensured to be quickly aligned to a proper operation position to carry out an operation.
Further, the distance adjusting mechanism comprises a distance adjusting nut and two distance adjusting pull rods; the two distance-adjusting pull rods are distributed in a V shape, the two distance-adjusting pull rods are respectively connected with each other through first ends, and second ends of the two distance-adjusting pull rods are respectively connected with the two implantation supporting legs on the distance-adjusting mechanism; the two implanted support legs on the distance adjusting mechanism are provided with external threads, and the distance adjusting nut is in threaded connection with the external threads; screwing the distance adjusting nut to change the distance between the free ends of the two implantation legs on the distance adjusting mechanism;
or the distance adjusting mechanism comprises a distance adjusting pipe barrel, a distance adjusting screw and a traction rope; the distance adjusting screw is movably screwed in the inner cavity of the distance adjusting pipe barrel; the distance adjusting pipe barrel is arranged on one of the implanting supporting legs on the distance adjusting mechanism, the traction rope is arranged on the other implanting supporting leg on the distance adjusting mechanism, and the traction rope is connected with the distance adjusting screw; screwing the distance adjusting screw can change the distance between the free ends of the two implantation legs on the distance adjusting mechanism.
Or the distance adjusting mechanism comprises a wire harness pipe barrel and two traction ropes; the two implanting support legs on the distance adjusting mechanism are arranged on the connecting seat in a V shape; one end of the wiring harness pipe barrel is arranged on the connecting seat, the other end of the wiring harness pipe barrel extends towards the free end of the implantation supporting leg, and the two traction ropes are connected with the two implantation supporting legs on the distance adjusting mechanism respectively after penetrating through the wiring harness pipe barrel; pulling the pull cord can change the distance between the free ends of the two implanted legs on the pitch mechanism. The technical effects are as follows: three preferable modes of arrangement of the distance adjusting mechanism are disclosed, and the mode of an adjusting nut can be selected, the mode of combination of a wiring harness tube and two traction ropes can be selected, and the operation modes of the distance adjusting tube, the distance adjusting screw and the traction ropes can be selected. It should be emphasized that when two or more distance adjusting mechanisms are installed in the implantation frame, not only can all the distance adjusting mechanisms be selected to adopt any one of the structural forms, but also a plurality of distance adjusting mechanisms can be respectively adopted to adopt different structural forms.
Further, the connecting seat comprises an inner cylinder and a lantern ring; an annular groove is formed in the outer wall of the inner barrel, and the axis of the annular groove is overlapped with the axis of the inner barrel; the end face of the inner cylinder is provided with a plurality of guide grooves, and the guide grooves extend from the end face of the inner cylinder to the annular groove; the fixed end of the implantation supporting leg is T-shaped or L-shaped, and the implantation supporting leg is clamped in the annular groove and the guide groove; the lantern ring is wrapped on the outer sides of the inner barrel and the implantation supporting leg in a fitting mode. The technical effects are as follows: the inner cylinder, the lantern ring and the implanted landing leg combination which is in a T-shaped or L-shaped design are installed, so that the assembly and disassembly are convenient, and the distance adjusting mechanism is favorable for adjusting each implanted landing leg.
Further, the inner cylinder comprises an extension section and a mounting section along the axial direction; the lantern ring is arranged on the mounting section; the extension section with can dismantle the joint between the installation section. The technical effects are as follows: the two parts which are detachably connected solve the retention problem of the implant rack after the screw body is implanted. Optionally, the detachable connection includes a screw connection between the extension section and the mounting section, and a clamping connection between the extension section and the mounting section.
Further, the sheath tube, the bracket connecting rod, the first locking mechanism and the second locking mechanism are also included; the outer sheath pipe barrel is sleeved outside the inner barrel, and the inner barrel is sleeved outside the support connecting rod; the first locking mechanism is arranged between the outer sheath cylinder and the inner cylinder and is used for limiting the inner cylinder to rotate around the axis of the inner cylinder and move along the axis of the inner cylinder relative to the outer sheath cylinder; the second locking mechanism is arranged between the inner cylinder and the bracket connecting rod and is used for limiting the bracket connecting rod to rotate around the axis of the bracket connecting rod relative to the inner cylinder and move along the axis of the bracket connecting rod. The technical effects are as follows: the inner cavity and the outer part of the inner cylinder are respectively provided with a bracket connecting rod and an outer sheath pipe barrel, and a locking mechanism is arranged, so that a complete implantation system of the implantation frame and the delivery system is formed.
Further, the first locking mechanism is a screw, the first locking mechanism penetrates through the side wall of the outer sheath cylinder and is in threaded connection with the outer sheath cylinder, and the tail end of the first locking mechanism faces the outer wall of the inner cylinder; the second locking mechanism is a screw, penetrates through the side wall of the inner barrel and is in threaded connection with the inner barrel, and the tail end of the second locking mechanism faces the outer wall of the support connecting rod. The technical effects are as follows: specifically, the screw is selected as the locking mechanism, the technology is mature and reliable, and the operation is simple and rapid.
Further, a cavity between the inner wall of the outer sheath barrel and the outer wall of the inner barrel is divided into a plurality of tube cavities, the tube cavities extend along the length direction of the outer sheath barrel, and the tube cavities are used for containing adjusting steel wires and/or the traction ropes. The technical effects are as follows: different tube cavities are used for respectively and independently placing the adjusting steel wire and the traction rope, and the operability and the safety reliability are higher.
Further, a tapered handle is arranged at the proximal end of the sheath barrel; the diameter of the proximal end of the tapered handle is greater than the diameter of the distal end of the tapered handle. The technical effects are as follows: the tapered handle not only facilitates manual operation, but also facilitates the provision of a locking mechanism.
Further, an adjusting wire hole is formed in the conical handle and extends into the tube cavity through the conical handle; and a third locking mechanism is further arranged on the conical handle and is used for limiting the adjusting steel wire to rotate and move in the tube cavity. The technical effects are as follows: a locking mechanism is directly added on the tapered handle to control the movement and locking of the adjusting steel wire in the tube cavity.
Further, an adjusting wire hole is formed in the conical handle and extends into the tube cavity through the conical handle; still be provided with on the lateral wall of support connecting rod and adjust the wire receptacle, be provided with fourth locking mechanical system on adjusting the wire receptacle, adjust the steel wire and run through adjust the wire receptacle and follow adjust the silk hole and get into in the lumen, fourth locking mechanical system is used for the restriction adjust the steel wire and be in rotatory and removal in the lumen. The technical effects are as follows: a locking mechanism is additionally arranged on the adjusting wire seat to control the movement and locking of the adjusting steel wire in the pipe cavity.
Further, a fifth locking mechanism is arranged between the adjusting wire seat and the bracket connecting rod and used for limiting the adjusting wire seat to rotate and move relative to the bracket connecting rod. The technical effects are as follows: the adjustment of the installation stability of the adjusting screw seat is supplemented.
Furthermore, the implantation supporting leg comprises a swinging rod and a mounting rod, one end of the swinging rod is connected with the connecting seat, and the other end of the swinging rod is connected with the mounting rod; the swing rod and the installation rod are intersected at an included angle, and the joint of the swing rod and the installation rod is arranged smoothly. The technical effects are as follows: the curved shape improves the supporting force of the supporting legs, and the smoothly arranged joints can avoid the supporting legs from damaging the valve ring.
Further, the free end of the implanted supporting leg is fixedly provided with the spiral nail body, and the included angle between the length direction of the spiral nail body and the tail section of the implanted supporting leg ranges from 0 degree to 60 degrees. The technical effects are as follows: the structural design ensures that the spiral nail body enters the valve ring more scientifically and the implantation effect of the spiral nail body is firmer.
Further, the device also comprises a screw guide cable, a conveying inner pipe and a conveying outer pipe; one end of the screw guide cable is in threaded connection with the free end of the implantation supporting leg, the conveying inner tube is sleeved outside the screw guide cable, a clamping groove is formed in the front end of the conveying inner tube and used for being clamped with the screw body, and the conveying outer tube is sleeved outside the conveying inner tube and the screw body; the conveying inner tube is used for moving the screw nail body along the screw guide cable and rotating around the screw guide cable. The technical effects are as follows: the end of the screw guide cable is detachably connected with the free end of the implanted supporting leg, the screw body is guided to the implanted supporting leg from the outside, the conveying inner tube is movably clamped with the screw body through the clamping groove at the front end and is used for driving the screw body to be implanted into a specific operation position, the conveying outer tube is sleeved on the outer side of the conveying inner tube and the screw body, and the effects of protecting the screw body and preventing the screw body from being separated are achieved.
The invention has the beneficial effects that:
according to the mitral valve repair implantation system, the plurality of implantation support legs for implanting the spiral nail body are respectively arranged into a structure with one end fixed and the other end freely extending, and the distance between any two adjacent free ends can be adjusted by using the distance adjusting mechanism, so that the mitral valve repair operation has the effects of high efficiency and reliability in operation, accurate positioning of the spiral nail body and free controllability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a conventional mitral valve repair implant system in an expanded configuration.
Fig. 2 is a schematic view of a conventional mitral valve repair implant system in a collapsed configuration.
Fig. 3 is a schematic view of a first embodiment of a mitral valve repair implant system according to the present invention.
Fig. 4 is a schematic view of a second embodiment of a mitral valve repair implant system according to the present invention.
Fig. 5 is a schematic view of a third embodiment of a mitral valve repair implant system according to the present invention.
Fig. 6 is a schematic view of the structure of the periphery of the connection seat (the removable collar) in the mitral valve repair implantation system provided by the present invention.
Fig. 7 is a first perspective internal structure diagram of a connection seat (with a collar removed) in the mitral valve repair implantation system of the present invention.
Fig. 8 is a second perspective internal structure diagram of the connection seat (with the collar removed) in the mitral valve repair implantation system according to the present invention.
Fig. 9 is a schematic view of the overall structure of the mitral valve repair implant system provided by the present invention.
Fig. 10 is a partial enlarged view at I in fig. 9.
Fig. 11 is a schematic view of the matching connection structure of the screw guide cable, the inner delivery tube, the outer delivery tube and the implantation leg in the mitral valve repair implantation system provided by the invention.
Fig. 12 is a schematic structural view of a screw guide cable in a mitral valve repair implantation system according to the present invention.
Fig. 13 is a schematic structural view of an inner delivery tube and an outer delivery tube in a mitral valve repair implant system provided by the present invention.
Fig. 14 is a schematic structural view of a swinging rod and a mounting rod in the mitral valve repair implantation system provided by the present invention.
Icon: 100-a connecting seat; 110-an inner cylinder; 1121-ring groove; 1122-a guide slot; 120-a collar; 200-a distance adjusting mechanism; 201-distance adjusting nut; 202-distance adjusting pull rod; 203-a pitch tube; 205-a traction rope; 206-a wire harness barrel; 300-implant legs; 301-a first leg; 302-a second leg; 303-a third leg; 304-a fourth leg; 3001-a swing lever; 3002-mounting rods; 400-a spiral nail body; 500-sheath tubing; 510-a lumen; 520-a tapered handle; 521-adjusting a thread hole; 600-bracket connection rods; 610-adjusting a screw seat; 710-a first locking mechanism; 720-a second locking mechanism; 730-a third locking mechanism; 740-a fourth locking mechanism; 750-a fifth locking mechanism; 810-screw guide cable; 820-conveying the inner tube; 830-outer delivery tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention that are generally described and illustrated in the figures can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
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 or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
FIG. 3 is a schematic view of a first embodiment of a mitral valve repair implant system according to the present invention; FIG. 4 is a schematic view of a second embodiment of a mitral valve repair implant system according to the present invention; FIG. 5 is a schematic view of a third embodiment of a mitral valve repair implant system according to the present invention; fig. 6 is a schematic view of the structure of the periphery of the connection seat 100 (with the collar 120 removed) in the mitral valve repair implantation system provided by the present invention; fig. 7 is a first perspective internal view of the attachment base 100 (with the collar 120 removed) in the mitral valve repair implant system of the present invention; fig. 8 is a second perspective internal view of the attachment base 100 (with the collar 120 removed) in the mitral valve repair implant system of the present invention. Referring to fig. 3 to 8, the present embodiment provides a mitral valve repair implantation system, which includes a connection seat 100, a distance adjustment mechanism 200, and a plurality of implantation legs 300; two ends of the implantation supporting leg 300 are respectively a fixed end and a free end, the fixed ends are arranged on the connecting seat 100, all the fixed ends are distributed in a ring shape, all the free ends are positioned on the same side of the connecting seat 100, and the free ends are used for implanting the spiral nail body 400; at least two adjacent implant legs 300 are provided with a distance adjustment mechanism 200, the distance adjustment mechanism 200 being adapted to vary the distance between two adjacent free ends.
The working principle and the operation method of the mitral valve repair implantation system of the embodiment are as follows:
when the mitral valve repair implantation system is used, the screw body 400 to be implanted is positioned at the free ends of the implantation legs 300, since the fixed ends of the implantation legs 300 are installed on the connection seat 100, and the free ends are distributed on the same side of the connection seat 100 in an uncertain position distribution manner. In order to align the free ends with the positions where the screw bodies 400 are to be implanted, the distance between two adjacent free ends can be changed by using the distance adjusting mechanism 200, and since the distance between one pair or even at most two adjacent free ends can be changed, the free ends can be finally positioned on the positions where the screw bodies 400 should be implanted, and the mitral valve repairing operation can be accurately and efficiently completed. In the above operation process, since the screw body 400 is located at the free end of the implantation leg 300, the position adjustment is not limited by the traction of the other free ends, so the positioning of the screw body 400 is more accurate, free and controllable, and the mitral valve repair operation is more efficient and reliable.
In at least one preferred embodiment, the number of implant legs 300 is four, and four implant legs 300 are set as a first leg 301, a second leg 302, a third leg 303, and a fourth leg 304, respectively, in a clockwise direction; wherein the distance adjusting mechanism 200 is arranged on the first leg 301 and the second leg 302.
In at least one preferred embodiment, the distance adjustment mechanism 200 is provided on the first leg 301 and the second leg 302, the third leg 303 and the fourth leg 304, respectively.
In at least one preferred embodiment, the distance adjustment mechanism 200 is provided on the first leg 301 and the second leg 302, on the third leg 303 and the fourth leg 304, and on the first leg 301 and the fourth leg 304, respectively.
In at least one preferred embodiment, the distance adjustment mechanism 200 is disposed on the first leg 301 and the second leg 302, on the third leg 303 and the fourth leg 304, on the first leg 301 and the fourth leg 304, and on the second leg 302 and the third leg 303, respectively.
It should be emphasized that, in the above preferred embodiment, when two or more distance adjusting mechanisms 200 are installed, not only all the distance adjusting mechanisms 200 may be selected to adopt any one of the structural forms, but also a plurality of distance adjusting mechanisms 200 may be respectively adopted to adopt different structural forms.
In at least one preferred embodiment, as shown in fig. 3, the distance adjustment mechanism 200 includes a distance adjustment nut 201 and two distance adjustment tie rods 202; the two distance-adjusting pull rods 202 are distributed in a V shape, the two distance-adjusting pull rods 202 are respectively connected with each other through first ends, and second ends of the two distance-adjusting pull rods 202 are respectively connected with the two implanted supporting legs 300 on the distance-adjusting mechanism 200; the two distance adjusting pull rods 202 on the distance adjusting mechanism 200 are both provided with external threads, and the distance adjusting nut 201 is in threaded connection with the external threads; the distance between the free ends of the two implanted legs 300 on the distance adjustment mechanism 200 can be changed by screwing the distance adjustment nut 201.
In at least one preferred embodiment, as shown in fig. 4, the pitch mechanism 200 includes a pitch barrel 203, a pitch screw (not labeled), and a pull cord 205; the distance adjusting screw is movably screwed in the inner cavity of the distance adjusting pipe barrel 203; a distance adjusting pipe barrel 203 is arranged on one implantation supporting leg 300 on the distance adjusting mechanism 200, a traction rope 205 is arranged on the other implantation supporting leg 300 on the distance adjusting mechanism 200, and the traction rope 205 is connected with a distance adjusting screw; the distance between the free ends of the two implanted legs 300 on the adjustment mechanism 200 can be changed by screwing the adjustment screw.
In at least one preferred embodiment, as shown in fig. 5, the distance adjustment mechanism 200 includes a harness barrel 206 and two pull cords 205; the two implanted supporting legs 300 on the distance adjusting mechanism 200 are arranged on the connecting seat 100 in a V shape; one end of the wire harness tube 206 is arranged on the connecting seat 100, the other end of the wire harness tube 206 extends towards the free end of the implanting leg 300, and the two hauling ropes 205 are respectively connected with the two implanting legs 300 on the distance adjusting mechanism 200 after passing through the wire harness tube 206; pulling the pull cord 205 can change the distance between the free ends of the two implanted legs 300 on the adjustment mechanism 200.
In one embodiment, as shown in fig. 6, 7, 8, the connecting socket 100 comprises an inner barrel 110 and a collar 120; an annular groove 1121 is formed in the outer wall of the inner cylinder 110, and the axis of the annular groove 1121 is overlapped with the axis of the inner cylinder 110; the end surface of the inner cylinder 110 is provided with a plurality of guide grooves 1122, and the guide grooves 1122 extend from the end surface of the inner cylinder 110 to the ring groove 1121; the fixed end of the implantation leg 300 is T-shaped or L-shaped, and the implantation leg 300 is clamped in the ring groove 1121 and the guide groove 1122; the collar 120 snugly wraps around the outer sides of the inner barrel 110 and the implant legs 300.
The number of the guide grooves 1122 may be greater than or equal to the number of the implantation legs 300, and the implantation legs 300 may be installed in the appropriate guide grooves 1122 according to the specific opening condition of the mitral valve.
Further, as shown in fig. 6, 7, and 8, the inner cylinder 110 includes an extension section and a mounting section in the axial direction; collar 120 is disposed on the mounting section; the extension section and the installation section are detachably clamped.
Optionally, the detachable connection includes a screw connection between the extension section and the mounting section, and a clamping connection between the extension section and the mounting section. If in the spiro union mode, one in extension section or the installation segment is provided with the grafting sand grip, and another is provided with the inserting groove, wherein sets up external screw thread and internal thread on grafting sand grip and the inserting groove respectively, and the spiro union is realized through grafting sand grip and inserting groove to extension section and installation segment. In the structure, before the mitral valve repair implantation system is implanted, the extension section and the installation section are in threaded connection with each other, after all the threaded nail bodies are implanted into human tissues, the extension section is screwed, and the installation section is fixedly installed in a human body along with the threaded nail bodies, so that the extension section can be smoothly detached and taken out.
FIG. 9 is a schematic view of the overall structure of a mitral valve repair implant system provided by the present invention; fig. 10 is a partial enlarged view at I in fig. 9. As shown in fig. 9 and 10, on the basis of any of the above embodiments, further, the mitral valve repair implantation system is further provided with an outer sheath barrel 500, a stent connecting rod 600, a first locking mechanism 710 and a second locking mechanism 720; the sheath tube 500 is sleeved outside the inner cylinder 110, and the inner cylinder 110 is sleeved outside the bracket connecting rod 600; a first locking mechanism 710 is disposed between the sheath cartridge 500 and the inner cartridge 110, the first locking mechanism 710 for restricting rotation of the inner cartridge 110 relative to the sheath cartridge 500 about and movement along its axis; the second locking mechanism 720 is provided between the inner cylinder 110 and the holder connecting rod 600, and the second locking mechanism 720 serves to restrict the holder connecting rod 600 from rotating about and moving along its axis with respect to the inner cylinder 110.
Optionally, the first locking mechanism 710 is a screw, the first locking mechanism 710 extends through a sidewall of the sheath cartridge 500 and is threadably engaged with the sheath cartridge 500, and an end of the first locking mechanism 710 faces an outer wall of the inner cartridge 110. The second locking mechanism 720 is a screw, the second locking mechanism 720 penetrates through the sidewall of the inner cylinder 110 and is screwed with the inner cylinder 110, and the end of the second locking mechanism 720 faces the outer wall of the bracket connecting rod 600.
In addition to any of the above embodiments, as shown in fig. 9 and 10, the chamber between the inner wall of the sheath tube 500 and the outer wall of the inner tube 110 is divided into a plurality of lumens 510, the plurality of lumens 510 extend along the length direction of the sheath tube 500, and the lumens 510 are used for inserting the adjusting wire and/or the traction rope 205. Wherein, the plurality of tube cavities 510 and the inner cavity of the inner tube 110 are respectively used for threading the adjusting steel wire or the traction rope 205 according to the operation requirement, and the inner cavity of the inner tube 110 or any tube cavity 510 can also be used for threading the screw guide cable 810, the conveying inner tube 820 and the conveying outer tube 830.
Further, optionally, as shown in fig. 9, 10, the proximal end of the sheath barrel 500 is provided with a tapered handle 520; the diameter of the proximal end of the tapered handle 520 is greater than the diameter of the distal end of the tapered handle 520. An adjusting wire hole 521 is formed in the tapered handle 520, and the adjusting wire hole 521 penetrates through the tapered handle 520 and extends into the lumen 510; the tapered handle 520 is further provided with a third locking mechanism 730, and the third locking mechanism 730 is used for limiting the rotation and the movement of the adjusting steel wire in the lumen 510.
Optionally, as shown in fig. 9 and 10, in a case where the third locking mechanism 730 is not provided, an adjusting wire hole 521 is provided on the tapered handle 520, and the adjusting wire hole 521 extends through the tapered handle 520 to the lumen 510; the side wall of the bracket connecting rod 600 is further provided with an adjusting wire seat 610, the adjusting wire seat 610 is provided with a fourth locking mechanism 740, the adjusting wire penetrates through the adjusting wire seat 610 and enters the lumen 510 from the adjusting wire hole 521, and the fourth locking mechanism 740 is used for limiting the adjusting wire to rotate and move in the lumen 510.
Further, as shown in fig. 9 and 10, a fifth locking mechanism 750 is further provided between the adjustment wire holder 610 and the stand connecting rod 600, and the fifth locking mechanism 750 is used to limit the rotation and movement of the adjustment wire holder 610 with respect to the stand connecting rod 600.
Fig. 14 is a schematic structural view of the swinging rod 3001 and the mounting rod 3002 in the mitral valve repair implantation system provided by the present invention. On the basis of any of the above embodiments, as shown in fig. 3 to 6 and 14, the implanting leg 300 includes a swinging rod 3001 and a mounting rod 3002, one end of the swinging rod 3001 is connected to the connecting seat 100, and the other end of the swinging rod 3001 is connected to the mounting rod 3002; the swing lever 3001 and the mounting lever 3002 intersect at an included angle, which is preferably an obtuse angle, and the curved connection between the swing lever 3001 and the mounting lever 3002 is smooth.
In addition, as shown in fig. 3 to 6, a screw body 400 is fixedly arranged at the free end of the implantation leg 300, and the included angle between the length direction of the screw body 400 and the end of the implantation leg 300 ranges from 0 ° to 60 °. According to actual production and clinical experience, the angle is most reasonable about 45 degrees.
FIG. 11 is a schematic view of the screw guide cable 810, the inner delivery tube 820, the outer delivery tube 830 and the implant leg 300 of the mitral valve repair implant system according to the present invention; FIG. 12 is a schematic structural view of a screw guide cable 810 in a mitral valve repair implant system according to the present invention; fig. 13 is a schematic structural diagram of an inner delivery tube 820 and an outer delivery tube 830 in a mitral valve repair implant system provided by the present invention. On the basis of the structure, the device also comprises a screw guide cable 810, a conveying inner pipe 820 and a conveying outer pipe 830; one end of the screw guide cable 810 is in threaded connection with the free end of the implantation supporting leg 300, the conveying inner tube 820 is sleeved outside the screw guide cable 810, the front end of the conveying inner tube 820 is provided with a clamping groove used for being clamped with the screw body 400, and the conveying outer tube 830 is sleeved outside the conveying inner tube 820 and the screw body 400; the feeding inner tube 820 is used to move the screw body 400 along the screw guide wire 810 and rotate around the screw guide wire 810.
Specifically, before the mitral valve repair implantation system of this embodiment is placed into a human body through an operation, the screw guide cable 810 is screwed and fixed to the free end of the implantation leg 300, after the mitral valve repair implantation system is placed into the human body and the positions of the ends of the implantation legs 300 are adjusted, the screw body 400 is clamped at the front end of the conveying inner tube 820, and the screw body 400 is pushed to the end of the implantation leg 300 through the conveying inner tube 820 by using the guiding function of the screw guide cable 810, in this process, the conveying outer tube 830 can move along the axis of the conveying inner tube 820, and the screw body 400 is continuously limited in the inner cavity thereof, so that the screw body 400 is prevented from falling off or causing damage to the human body. The screw body 400 is then implanted at the surgical site by rotating the delivery inner tube 820. Finally, the screw guide cable 810, the inner delivery tube 820 and the outer delivery tube 830 are withdrawn from the human body.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A mitral valve repair implant system, comprising a connection base (100), a distance adjustment mechanism (200), and a plurality of implant legs (300); two ends of the implantation supporting leg (300) are respectively a fixed end and a free end, the fixed ends are arranged on the connecting seat (100), all the fixed ends are distributed in an annular shape, all the free ends are positioned on the same side of the connecting seat (100), and the free ends are used for implanting the spiral nail body (400); the distance adjusting mechanism (200) is arranged on at least two adjacent implantation supporting legs (300), and the distance adjusting mechanism (200) is used for changing the distance between two adjacent free ends.
2. The mitral valve repair implant system of claim 1, wherein the number of implant legs (300) is four, the four implant legs (300) being set to a first leg (301), a second leg (302), a third leg (303), and a fourth leg (304), respectively, in a clockwise direction;
wherein the distance adjustment mechanism (200) is arranged on the first leg (301) and on the second leg (302);
or the distance adjusting mechanisms (200) are respectively arranged on the first supporting leg (301) and the second supporting leg (302), the third supporting leg (303) and the fourth supporting leg (304);
or, the distance adjusting mechanisms (200) are respectively arranged on the first leg (301) and the second leg (302), on the third leg (303) and the fourth leg (304), and on the first leg (301) and the fourth leg (304);
or, the distance adjusting mechanisms (200) are respectively arranged on the first leg (301) and the second leg (302), on the third leg (303) and the fourth leg (304), on the first leg (301) and the fourth leg (304), on the second leg (302) and the third leg (303).
3. The mitral valve repair implant system of claim 2, wherein the pitch mechanism (200) comprises a pitch nut (201) and two pitch rods (202); the two distance-adjusting pull rods (202) are distributed in a V shape, the two distance-adjusting pull rods (202) are respectively connected with each other through first ends, and second ends of the two distance-adjusting pull rods (202) are respectively connected with the two implantation supporting legs (300) on the distance-adjusting mechanism (200); the two implantation supporting legs (300) on the distance adjusting mechanism (200) are both provided with external threads, and the distance adjusting nut (201) is in threaded connection with the external threads; -screwing the distance adjustment nut (201) enabling the distance between the free ends of the two implantation legs (300) on the distance adjustment mechanism (200) to be varied;
or the distance adjusting mechanism (200) comprises a distance adjusting pipe barrel (203), a distance adjusting screw and a traction rope (205); the distance adjusting screw is movably screwed in the inner cavity of the distance adjusting pipe barrel (203); the distance adjusting tube (203) is arranged on one implanting leg (300) of the distance adjusting mechanism (200), the traction rope (205) is arranged on the other implanting leg (300) of the distance adjusting mechanism (200), and the traction rope (205) is connected with the distance adjusting screw; -screwing the set screw, enabling the distance between the free ends of the two implanted legs (300) on the set mechanism (200) to be varied;
alternatively, the pitch mechanism (200) comprises a harness barrel (206) and two pull cords (205); the two implantation supporting legs (300) on the distance adjusting mechanism (200) are arranged on the connecting seat (100) in a V shape; one end of the wiring harness barrel (206) is arranged on the connecting seat (100), the other end of the wiring harness barrel (206) extends towards the free end of the implantation leg (300), and the two traction ropes (205) are respectively connected with the two implantation legs (300) on the distance adjusting mechanism (200) after penetrating through the wiring harness barrel (206); pulling the pull cord (205) can change the distance between the free ends of the two implanted legs (300) on the adjustment mechanism (200).
4. The mitral valve repair implant system of claim 3, wherein the connection hub (100) comprises an inner cylinder (110) and a collar (120); an annular groove (1121) is formed in the outer wall of the inner cylinder (110), and the axis of the annular groove (1121) is overlapped with the axis of the inner cylinder (110); a plurality of guide grooves (1122) are formed in the end face of the inner cylinder (110), and the guide grooves (1122) extend from the end face of the inner cylinder (110) to the ring groove (1121);
the fixed end of the implantation supporting leg (300) is T-shaped or L-shaped, and the implantation supporting leg (300) is clamped in the annular groove (1121) and the guide groove (1122); the collar (120) is wrapped snugly around the outside of the inner barrel (110) and the implantation leg (300).
5. The mitral valve repair implant system of claim 4, wherein the inner barrel (110) comprises an elongated section and a mounting section in an axial direction; the collar (120) is disposed on the mounting section; the extension section with can dismantle the joint between the installation section.
6. The mitral valve repair implant system of claim 4, further comprising an outer sheath barrel (500), a stent connection rod (600), a first locking mechanism (710), and a second locking mechanism (720); the sheath pipe barrel (500) is sleeved outside the inner barrel (110), and the inner barrel (110) is sleeved outside the bracket connecting rod (600);
the first locking mechanism (710) is disposed between the outer sheath barrel (500) and the inner barrel (110), the first locking mechanism (710) for limiting rotation of the inner barrel (110) relative to the outer sheath barrel (500) about and movement along its axis;
the second locking mechanism (720) is arranged between the inner cylinder (110) and the bracket connecting rod (600), and the second locking mechanism (720) is used for limiting the bracket connecting rod (600) to rotate around the axis of the bracket connecting rod and move along the axis of the bracket connecting rod relative to the inner cylinder (110).
7. The mitral valve repair implant system of claim 6, wherein the first locking mechanism (710) is a screw, the first locking mechanism (710) extending through a sidewall of the outer sheath barrel (500) and being threadably engaged with the outer sheath barrel (500), a distal end of the first locking mechanism (710) facing an outer wall of the inner barrel (110);
the second locking mechanism (720) is a screw, the second locking mechanism (720) penetrates through the side wall of the inner cylinder (110) and is in threaded connection with the inner cylinder (110), and the tail end of the second locking mechanism (720) faces the outer wall of the bracket connecting rod (600).
8. The mitral valve repair implant system of claim 6, wherein a chamber between an inner wall of the outer sheath barrel (500) and an outer wall of the inner barrel (110) is partitioned into a plurality of lumens (510), the plurality of lumens (510) extending along a length of the outer sheath barrel (500), the lumens (510) being used for placement of an adjustment wire and/or the traction cable (205).
9. The mitral valve repair implant system of claim 8, wherein the proximal end of the outer sheath barrel (500) is provided with a tapered handle (520); the diameter of the proximal end of the tapered handle (520) is greater than the diameter of the distal end of the tapered handle (520).
10. The mitral valve repair implant system of claim 9, wherein the tapered handle (520) is provided with an adjustment wire hole (521), the adjustment wire hole (521) extending through the tapered handle (520) into the lumen (510); the tapered handle (520) is also provided with a third locking mechanism (730), and the third locking mechanism (730) is used for limiting the rotation and the movement of the adjusting steel wire in the lumen (510).
11. The mitral valve repair implant system of claim 9, wherein the tapered handle (520) is provided with an adjustment wire hole (521), the adjustment wire hole (521) extending through the tapered handle (520) into the lumen (510);
still be provided with on the lateral wall of support connecting rod (600) and adjust wire receptacle (610), be provided with fourth locking mechanical system (740) on adjusting wire receptacle (610), the regulation steel wire runs through adjust wire receptacle (610) and follow adjust silk hole (521) and get into in lumen (510), fourth locking mechanical system (740) are used for restricting the regulation steel wire is in rotation and removal in lumen (510).
12. The mitral valve repair implant system of claim 11, wherein a fifth locking mechanism (750) is further disposed between the adjustment wire holder (610) and the stent connection rod (600), the fifth locking mechanism (750) for limiting rotation and movement of the adjustment wire holder (610) relative to the stent connection rod (600).
13. The mitral valve repair implant system of claim 1, wherein the implant leg (300) comprises a swinging rod (3001) and a mounting rod (3002), one end of the swinging rod (3001) being connected to the connection seat (100), the other end of the swinging rod (3001) being connected to the mounting rod (3002); swing arm (3001) with installation pole (3002) are that the contained angle is crossing, swing arm (3001) with the junction of installation pole (3002) is the rounding off and sets up.
14. The mitral valve repair implant system of claim 13, wherein the free end of the implant leg (300) is fixedly provided with the screw body (400), and the screw body (400) has a length direction that is at an angle ranging from 0 ° to 60 ° with an end section of the implant leg (300).
15. The mitral valve repair implant system of claim 8, further comprising a screw guide cable (810), an inner delivery tube (820), and an outer delivery tube (830); one end of the screw guide cable (810) is in threaded connection with the free end of the implantation supporting leg (300), the conveying inner tube (820) is sleeved outside the screw guide cable (810), the front end of the conveying inner tube (820) is provided with a clamping groove which is used for clamping with the screw body (400), and the conveying outer tube (830) is sleeved outside the conveying inner tube (820) and the screw body (400);
the inner conveying pipe (820) is used for moving the screw body (400) along the screw guide cable (810) and rotating around the screw guide cable (810).
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