CN110720961B

CN110720961B - Left auricle plugging device

Info

Publication number: CN110720961B
Application number: CN201911033137.6A
Authority: CN
Inventors: 兰贝蒂; 浮娇; 高琳; 杜亚娟; 王瑞涛; 张玉顺
Original assignee: First Affiliated Hospital of Medical College of Xian Jiaotong University
Current assignee: First Affiliated Hospital of Medical College of Xian Jiaotong University
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2021-01-22
Anticipated expiration: 2039-10-28
Also published as: CN110720961A

Abstract

The invention belongs to the technical field of medical instruments, in particular to a left auricle occluder, which comprises an occluder disk and a spherical net, wherein a first fixed seat is fixed at the central position of the surface of one side of the spherical net, a rotary shaft is fixed at the central position of the surface of one side of the first fixed seat, one side of the rotary shaft is connected with a rotary cap in a screwing way through screw threads, a sealing sleeve is fixed around the outer wall of the rotary cap, a plurality of movable frames are fixed on the surface of one side of the occluder disk, a second fixed seat is arranged at the bottom end of each movable frame, a support frame is arranged above the second fixed seat, a rotary shaft is arranged at one side of the bottom end of each support frame, a spring is arranged at the other side of the bottom end of each support frame, the distance between the occluder disk and the spherical net is convenient to adjust the relative length of the whole device, the occluder disk can be, the plugging effect is good, the operation is simple, and the use is convenient.

Description

Left auricle plugging device

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a left atrial appendage occluder.

Background

Atrial fibrillation (atrial fibrillation) is the most common type of arrhythmia in clinic, the most main harm of atrial fibrillation is to cause thrombosis in the left atrium, after thrombus falls off, complications such as acute myocardial infarction stroke, peripheral vascular embolism and the like are induced, the disability rate and the lethality rate are increased, more than 90 percent of thrombus in the current non-valvular atrial fibrillation patients comes from the left atrial appendage, so that the thrombus formation of medical equipment can be obviously reduced by closing or plugging the left atrial appendage, the thromboembolic complication is reduced,

in the minimally invasive left atrial appendage occlusion operation which is started in recent years, because the anatomical forms of the left atrial appendage are different, on one hand, blood residues are easy to occur in the operation and after the operation, and the ideal occlusion effect cannot be achieved; on the other hand, because the stopper is not firmly fixed, the falling-off phenomenon easily occurs, and the complexity in or after the operation is increased.

At present, the left atrial appendage occluder is authorized in 2018, 8, 31 and has the authorized public number CN207785227U, a new solution is provided based on the problems, the device comprises a medical instrument bracket front end, a bracket rear end, a support frame and a bracket film, the operation is simple, the use is convenient, but the patent also has the following problems in the use process: the distance between the front end of the bracket and the rear end of the bracket, namely the relative length of the whole device is inconvenient to adjust, the front end of the bracket cannot be completely inserted into the inner cavity of the left auricle, and the left auricle with different depths is inconvenient to plug; fix whole device through mutual laminating extrusion of left auricle cavity inner wall muscular layer and support front end, rely on support rear end and support front end to carry out the shutoff to left auricle jointly, the fixed strength of device relies on pressure between support front end and the left auricle cavity inner wall muscular layer completely, and the holding power is single, and stability is not strong, and the device is fixed firm inadequately.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a left atrial appendage occluder which has the characteristics of convenience in adjustment and fixation.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a left auricle plugging device, including shutoff dish and spherical net, a side surface central point department of putting of spherical net is fixed with the fixing base No. one, a side surface central point department of putting of fixing base is fixed with the spiral shaft, one side of spiral shaft closes soon through the screw thread and is connected with the cap that revolves, the outer wall of cap that revolves is fixed with the seal cover all around, a side fixed surface of shutoff dish has a plurality of adjustable shelf, the adjustable shelf bottom is provided with No. two fixing bases, the top of No. two fixing bases is provided with the strut, bottom one side of strut is provided with the pivot, the bottom opposite side of strut is provided with the spring.

As a preferred technical scheme of the left atrial appendage occluder, one end of a second fixing seat is of a square structure, the other end of the second fixing seat is of an arc structure, a first fixing piece and a second fixing piece are respectively fixed at the left end and the right end of the surface of the two sides of a movable frame, the first fixing piece and the second fixing piece are of circular structures, the first fixing piece is elastically connected with a support frame through a spring, and the second fixing piece is rotatably connected with the support frame through a rotating shaft.

As a preferred technical scheme of the left atrial appendage occluder, the upper end and the lower end of a support frame are both arc-shaped structures, the support frame is obliquely arranged above a movable frame, and a support block is fixed at the upper end of the support frame and is of an arc-shaped structure.

As a preferred technical scheme of the left atrial appendage occluder, equally-arranged threads are integrally formed on the periphery of the outer part of the rotary shaft, the rotary shaft penetrates through the occluding disc and is connected with the occluding disc in a screwing mode through the threads, and the rotary cap is attached to one side surface of the occluding disc.

As a preferred technical scheme of the left atrial appendage occluder, the spherical net is of a spherical structure, the spherical net is formed by splicing and fixing a plurality of alloy supports, the alloy supports are of annular structures, a first biological film is fixed on the outer surface of the spherical net outside the alloy supports, and the first biological film is of a spherical structure.

As a preferred technical scheme of the left atrial appendage occluder, a second biological film is fixed on the outer surface of the occluding disk.

Compared with the prior art, the invention has the beneficial effects that:

1. the left auricle plugging device comprises a spherical net at the front end and a plugging disc at the rear end, the spherical net is connected with the plugging disc in a screwing way through a rotating shaft, a first fixing seat is fixed at one end of the rotating shaft, a rotating cap is connected at the other end of the rotating shaft in a screwing way, and a sealing sleeve is fixed on the periphery outside the rotating cap;

2. shutoff dish one side is provided with a plurality of adjustable shelf, the adjustable shelf mainly includes No. two fixing bases and strut, strut one side is rotated through the pivot with the fixing base and is connected, the strut opposite side is connected through spring elasticity with the fixing base, the adjustable shelf can further be fixed the device, insert the inside cavity of left auricle with spherical net, the shutoff dish laminates each other with the outside flesh layer of left auricle, prop the stability of pressing further enhancement device to left auricle opening inner wall flesh layer through the adjustable shelf, the device is fixed firm, the shutoff ability is stronger.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a length adjustment state according to the present invention;

FIG. 3 is a schematic view of the connection structure of the present invention to a shallow left atrial appendage C;

FIG. 4 is a schematic view of the connection structure with the deep-seated left atrial appendage C in the present invention;

FIG. 5 is a schematic view of a rotary shaft connection structure according to the present invention;

FIG. 6 is a schematic view of a movable frame connection structure according to the present invention;

in the figure: 1. a plugging disc; 2. a spherical net; 3. an alloy support; 4. a first biofilm; 5. a first fixed seat; 6. rotating the shaft; 7. screwing the cap; 8. a movable frame; 9. sealing sleeves; 10. a second biofilm; 11. a second fixed seat; 12. a first fixing sheet; 13. a second fixing sheet; 14. a spring; 15. a support frame; 16. and (7) supporting blocks.

Detailed Description

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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Examples

Referring to fig. 1-6, the present invention provides the following technical solutions: a left auricle plugging device comprises a plugging disc 1 and a spherical net 2, wherein a first fixed seat 5 is fixed at the central position of one side surface of the spherical net 2, a rotary shaft 6 is fixed at the central position of one side surface of the first fixed seat 5, one side of the rotary shaft 6 is connected with a rotary cap 7 in a screwing way through threads, a sealing sleeve 9 is fixed around the outer wall of the rotary cap 7, a plurality of movable frames 8 are fixed on one side surface of the plugging disc 1, a second fixed seat 11 is arranged at the bottom end of each movable frame 8, a support frame 15 is arranged above the second fixed seat 11, a rotary shaft is arranged at one side of the bottom end of the support frame 15, a spring 14 is arranged at the other side of the bottom end of the support frame 15, C is a local structure of a left auricle C and is not completely drawn, and the distance between the plugging disc 1 and the spherical net 2 is convenient through the arrangement of the first fixed seat 5, the rotary shaft 6, the rotary cap, the regulation of whole device relative length promptly, can insert the inside cavity of left auricle C completely, the shutoff of the left auricle C of the different degree of depth of being convenient for, stability is stronger, the shutoff effect is better, setting through adjustable shelf 8 can be further fixed the device, when using, insert the inside cavity of left auricle C with ball net 2, shutoff dish 1 laminates with the outside flesh layer of left auricle C each other, prop the stability of pressing further reinforcing device to left auricle C opening inner wall flesh layer through adjustable shelf 8, the device is fixed firm, the shutoff ability is stronger.

Specifically, one end of the second fixing seat 11 is a square structure, the other end of the second fixing seat 11 is an arc structure, the left and right ends of the two side surfaces of the movable frame 8 are respectively fixed with a first fixing plate 12 and a second fixing plate 13, the first fixing plate 12 and the second fixing plate 13 are both circular structures, the first fixing plate 12 is elastically connected with the support frame 15 through a spring 14, the second fixing plate 13 is rotatably connected with the support frame 15 through a rotating shaft, in the embodiment, the movable frame 8 comprises the second fixing seat 11, the first fixing plate 12, the second fixing plate 13, the spring 14, the rotating shaft, the support frame 15 and a support block 16, the stability of the device can be further enhanced through the arrangement of the movable frame 8, the device is stably fixed and has strong plugging capability, the movable frame 8 is arranged at the upper end and the lower end of one side of the plugging disc 1, the second fixing seat 11 is made of a titanium alloy material and is used for the installation of the support frame 15, locate both ends about No. two fixing base 11's both sides surface, an installation setting for spring 14 and pivot, a stationary blade 12 is connected through spring 14 elasticity with strut 15, No. two stationary blades 13 are connected through the pivot rotation with strut 15, strut 15 is the titanium alloy material, the arc structure, bracer 16 is the PET material, the arc structure, bracer 16 props each other with the flesh layer and presses the laminating, can effectively reduce uncomfortable sense of health, at the in-process of inserting spherical net 2, strut 15 and bracer 16 stretch out and draw back and rotate through spring 14 and pivot elasticity, prop to press fixedly to left auricle C opening inner wall flesh layer, further fix the device.

Specifically, the upper end and the lower end of the support frame 15 are both arc-shaped structures, the support frame 15 is obliquely arranged above the movable frame 8, a support block 16 is fixed at the upper end of the support frame 15, and the support block 16 is of an arc-shaped structure.

Specifically, the outer periphery of the rotating shaft 6 is integrally formed with equally arranged threads, the rotating shaft 6 penetrates through the plugging disc 1 and is connected with the plugging disc by screwing the threads, the cap 7 is attached to one side surface of the plugging disc 1, the rotating shaft 6 is made of titanium alloy material and has a threaded cylindrical structure, the rotating shaft 6 penetrates through the plugging disc 1 and is connected with the plugging disc by screwing the threads, one end of the rotating shaft 6 is fixedly connected with a first fixing seat 5, the other end of the rotating shaft 6 is connected with the cap 7 by screwing the threads, the first fixing seat 5 is made of titanium alloy material, the sealing device is used for connecting the spherical net 2 and the rotary shaft 6, the rotary cap 7 is made of titanium alloy materials and used for adjusting and fixing the rotary shaft 6, and the sealing sleeve 9 is made of PU materials and used for sealing and sealing the rotary groove (not marked in the figure), namely the rotary shaft 6 penetrates through the groove formed in the middle of the plugging disc 1 and is arranged in the middle of the plugging disc 1), so that blood is prevented from flowing out through the rotary groove.

Specifically, the spherical net 2 is a spherical structure, the spherical net 2 is formed by splicing and fixing a plurality of alloy supports 3, the alloy supports 3 are annular structures, a first biological thin film 4 is fixed on the outer surface of the spherical net 2 outside the alloy supports 3, the first biological thin film 4 is a spherical structure, the spherical net 2 in the embodiment is a spherical integrated fixed structure which is overlapped with each other and is hollow after a plurality of memory alloy supports 3 are subjected to heat treatment, the spherical net 2 has certain deformation and expansion capacity, when the spherical net 2 is inserted into the inner cavity of the left auricle C, the spherical net 2 is stressed, deformed and expanded, meanwhile, the inner muscle layer of the cavity of the left auricle C is also stressed, expanded and contracted, and the spherical net 2 is fully attached to the inner wall muscle layer of the cavity of the left auricle C through the relative pressure exerted by the two, so that the spherical net 2 is fixed in the inner cavity of the left auricle C, the outer surface of the spherical net 2 is fixedly connected with a first biological film 4, and the first biological film 4 is a TPU biological film and can prevent blood seepage.

Specifically, the external surface of shutoff dish 1 is fixed with second biofilm 10, and shutoff dish 1 is the PU material in this embodiment, circular structure for left auricle C's shutoff is closed, and second biofilm 10 is the PU biofilm, can prevent the blood seepage flow.

The working principle and the using process of the invention are as follows: when the invention is used, referring to the third drawing and the fourth drawing, according to the depth of the left auricle C, the relative length of the device, namely the distance between the plugging disc 1 and the spherical net 2 is adjusted, the screw cap 7 is screwed to the left side, the plugging disc 1 and the spherical net 2 are in a relative movable state, the plugging disc 1 is screwed to the left side, the distance between the plugging disc 1 and the spherical net 2 is increased, the length of the whole device is increased, the screw cap 7 is screwed to the right side, the plugging disc 1 and the spherical net 2 are in a fixed state, an XC1015 medical delivery sheath, namely a medical PET conduit is used for primarily fixing the device, the device is continuously fed to the left auricle C along the incision, the spherical net 2 is inserted into the inner cavity of the left auricle C, at the moment, the plugging disc 1 and the outer muscle layer of the left auricle C, namely the opening of the left auricle C are mutually attached, the spherical net 2 made of the memory alloy bracket 3 deforms and expands under the pressure, and exerts a certain pressure with the, meanwhile, the inner wall muscular layer of the inner cavity of the left auricle C also reacts the pressure on the spherical net 2, the spherical net 2 is fully attached to the inner wall muscular layer of the inner cavity of the left auricle C through the relative pressure between the spherical net 2 and the inner wall muscular layer of the inner cavity of the left auricle C, so that the spherical net 2 is fixed in the inner cavity of the left auricle C and the medical conveying sheath is extracted out, in the process of inserting the spherical net 2, the support frame 15 and the support block 16 elastically stretch and rotate through the spring 14 and the rotating shaft, when the spherical net 2 is completely inserted into the inner cavity of the left auricle C, the support frame 15 and the support block 16 elastically recover through the spring 14 and elastically expand outwards, so as to support and fix the inner wall muscular layer of the opening of the left auricle C and further fix the device, and the blood in the left auricle C can be prevented from flowing back through the first biological film 4, the second biological film 10 and the seal sleeve 9 which are fully attached to the left auricle C, thereby completing the occlusion of the left atrial appendage C.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. 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

1. A left atrial appendage occluder which characterized in that: the plugging device comprises a plugging disc (1) and a spherical net (2), wherein a first fixed seat (5) is fixed at the central position of the surface of one side of the spherical net (2), a rotary shaft (6) is fixed at the central position of the surface of one side of the first fixed seat (5), one side of the rotary shaft (6) is connected with a rotary cap (7) in a screwing manner through threads, a sealing sleeve (9) is fixed around the outer wall of the rotary cap (7), a plurality of movable frames (8) are fixed on the surface of one side of the plugging disc (1), a second fixed seat (11) is arranged at the bottom end of each movable frame (8), a support frame (15) is arranged above each second fixed seat (11), a rotating shaft is arranged at one side of the bottom end of each support frame (15), and a spring (14);

one end of the second fixing seat (11) is of a square structure, the other end of the second fixing seat (11) is of an arc structure, a first fixing piece (12) and a second fixing piece (13) are respectively fixed at the left end and the right end of the surface of the two sides of the movable frame (8), the first fixing piece (12) and the second fixing piece (13) are of circular structures, the first fixing piece (12) is elastically connected with the support frame (15) through a spring (14), and the second fixing piece (13) is rotatably connected with the support frame (15) through a rotating shaft;

the upper end and the lower end of the support frame (15) are both arc-shaped structures, the support frame (15) is obliquely arranged above the movable frame (8), a support block (16) is fixed at the upper end of the support frame (15), and the support block (16) is of an arc-shaped structure;

the periphery of the outer part of the rotating shaft (6) is integrally formed with equally arranged threads, the rotating shaft (6) penetrates through the plugging disc (1) and is connected with the plugging disc (1) in a screwing way through the threads, and the rotating cap (7) is mutually attached to the surface of one side of the plugging disc (1); the movable frame (8) is arranged at the upper end and the lower end of one side of the plugging disc (1), and in the process of inserting the spherical net (2), the support frame (15) and the support block (16) elastically stretch and retract with the rotating shaft through the spring (14) and rotate to support, press and fix the muscle layer on the inner wall of the opening C of the left auricle.

2. A left atrial appendage occluder as in claim 1, wherein: the spherical net (2) is of a spherical structure, the spherical net (2) is made by splicing and fixing a plurality of alloy supports (3), the alloy supports (3) are of an annular structure, a first biological film (4) is fixed on the outer surface of the spherical net (2) outside the alloy supports (3), and the first biological film (4) is of a spherical structure.

3. A left atrial appendage occluder as in claim 1, wherein: a second biological film (10) is fixed on the outer surface of the plugging disc (1).