CN111214317A

CN111214317A - Aortic large support pressing, retracting and installing device and system

Info

Publication number: CN111214317A
Application number: CN202010112061.2A
Authority: CN
Inventors: 李刚; 高培显; 陈宁; 吴学君; 董典宁
Original assignee: Shandong Provincial Hospital
Current assignee: Shandong Provincial Hospital
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-06-02
Anticipated expiration: 2040-02-24
Also published as: CN111214317B

Abstract

The invention relates to a device and a system for compression retraction of an aortic great support. Comprises a fixed front inner ring, a fixed rear inner ring and a plurality of gear shifting teeth; the gear shifting teeth are composed of gears and shifting teeth, one end of each shifting tooth is fixedly connected with the side wall of each gear, the outer side wall of each shifting tooth is provided with a sawtooth structure parallel to the cylindrical central shaft, the plurality of gear shifting teeth are circularly arranged, the plurality of shifting teeth are positioned in the circular shape, the plurality of shifting teeth are arranged in a mutually crossed mode, and a compression space with adjustable size is formed in the center of the circular shape; the front fixed inner ring and the rear fixed inner ring are provided with a plurality of through holes which are respectively opposite to the hollow structures of the plurality of gears, and the gears are connected with the front fixed inner ring and the rear fixed inner ring through connecting shafts; the inside wall of the rotary adjusting ring is provided with a sawtooth structure meshed with the gear, and the gear is meshed with the inside wall of the rotary adjusting ring. The circumferential compression force is uniformly distributed, and the structural damage caused by uneven stress in the support reloading process is avoided.

Description

Aortic large support pressing, retracting and installing device and system

Technical Field

The invention belongs to the technical field of medical devices, and particularly relates to a device and a system for compressing, retracting and installing an aortic large stent.

Background

The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.

Most of the existing aorta stents are encapsulated in a stent delivery system in a production line by a specific large stent compression retraction device in a manufacturer factory. However, in clinical practice, when aortic diseases such as aortic dissection, aortic aneurysm and the like of a human body involve important branch arteries (brachiocephalic trunk artery, left common carotid artery, left subclavian artery, celiac trunk artery, superior mesenteric artery, double renal arteries and internal iliac artery), the large stent needs to be released outside the body on an operating table according to the characteristics of lesion, and the operations of opening a hole, slotting, sewing branches, trimming the length of the stent and the like are performed on the corresponding position of the large stent of the aorta based on the characteristics of the lesion of a patient, and then the processed large stent is loaded back into an original stent conveying system through a large stent compression and retraction loading system, so that the stent is ensured to be conveyed smoothly and released to an ideal lesion position.

At present, flexible tools such as infusion tubes, leather strips and sutures are mostly adopted in a method for clinically and practically reinstalling an aortic large stent for manually winding and roughly compressing the stent, but in the practical operation process, the above method easily causes the problems of distortion and deformation of the stent, insufficient compression and the like, so that not only is the sheath of an original stent conveying system easily damaged, and the sheath is damaged when the stent is conveyed into a blood vessel, but also the deformation of the stent caused by compression easily causes position displacement such as hole opening, slotting, branch sewing and the like, and the large stent cannot be accurately positioned to the opening of a branch artery when released in vivo, so that the branch artery is occluded, and the life of a patient is seriously even endangered. In addition, other compression devices or violent reinstallation methods are prone to damage to the stent outer membrane, resulting in stent rupture.

Disclosure of Invention

In view of the above-mentioned problems in the prior art, it is an object of the present invention to provide an aortic large stent compression and retraction device and system.

In order to solve the technical problems, the technical scheme of the invention is as follows:

in a first aspect, the aortic large stent compression and retraction device comprises a fixed front inner ring, a fixed rear inner ring and a plurality of gear shifting teeth;

the gear shifting teeth are composed of gears and shifting teeth, the gears are cylindrical gears, one ends of the shifting teeth are fixedly connected with the side walls of the gears, the cylindrical gears are hollow structures, the outer side walls of the shifting teeth are provided with sawtooth structures parallel to a cylindrical central shaft, a plurality of gear shifting teeth are circularly arranged and are positioned in the circular shape, the plurality of shifting teeth are mutually crossed, and a compression space with adjustable size is formed in the center of the circular shape;

the front fixed inner ring and the rear fixed inner ring are both of ring structures, and are provided with a plurality of through holes which are respectively opposite to the hollow structures of a plurality of gears, and the gears are connected with the front fixed inner ring and the rear fixed inner ring through connecting shafts;

the rotary adjusting ring is of a ring body structure, the inner side wall is provided with a sawtooth structure meshed with the gear, and the gear is meshed with the inner side wall of the rotary adjusting ring.

If the rotary adjusting ring drives the gear and the gear shifting teeth to rotate, the size of a compressible space in the center of the tightening device can be adjusted, so that the support is compressed. The gear is driven to rotate by a rotary adjusting ring, the fixed inner ring and the fixed front inner ring are connected through clamping and fixed on the fixed seat by the fixed long cylinder, the position of the gear is guaranteed to be fixed, the gear rotates around a connecting shaft of the gear, and then the diameter of a compressible space in the center of the tightening device is adjusted. Compare in current utilization rope etc. compress the support, regulatory function is better, and is littleer to support adventitia damage moreover, and the support condition of breaking is still less.

As a further embodiment of the present invention, the one gear set tooth has two elongated set teeth thereon, and both set teeth pass in front of the counter-clockwise adjacent set tooth, but the two set teeth when cycled counter-clockwise to the last gear set tooth do not pass through the counter-clockwise adjacent set tooth. The plurality of shifting teeth are mutually closely staggered and surrounded, a compression space with adjustable size is formed inside the circular ring, and the plurality of shifting teeth are connected with each other in a mode of providing a supporting force for the compression space, so that the support is compressed.

As a further embodiment of the invention, the circumferential included angles between the plurality of gear shifting teeth are the same. The angle is determined by the number of sets of final gear picks employed. The long gear shifting forks which are uniformly distributed in multiple directions, at multiple angles and staggered front and back are adopted to simultaneously extrude the support, so that the uniform stress in the support reloading process and after reloading can be ensured, and the uniform compression is realized.

As a further embodiment of the present invention, the press-back mounting device includes a base, an upper portion of the base is in an inwardly concave arc shape, an integral formed by the fixed front inner ring and the fixed rear inner ring is fixed at an arc position of the base, and both ends of the fixed front inner ring and the fixed rear inner ring are fixedly connected to the base.

As a further embodiment of the invention, a buckle is arranged at the top of one side of the base, the middle part of the buckle is movably connected with the base, the buckle is a movable rod with a pointed bulge arranged at one end, the pointed bulge and the movable rod are arranged at a set angle, the outer side wall of the rotary adjusting ring is provided with a sawtooth structure, and the pointed bulge is matched with the sawtooth structure of the outer side wall of the rotary adjusting ring body. The buckle closely presses close to with rotatory adjustable ring, plays the effect that makes rotatory adjustable ring position stability, after rotatory certain angle of rotation regulation, fixes through the buckle, can play the effect of restriction rotatory adjustable ring turned angle.

As a further embodiment of the invention, the number of the gear shifting teeth can be set to be 6-10 according to actual requirements.

As a further embodiment of the invention, the width of the long strip teeth of the shifting teeth is gradually reduced from the end connected with the gear to the free end, the shifting teeth are made of plastic materials with high rigidity, and the edges and other parts of the shifting teeth are passivated to avoid scratching a large support.

In a second aspect, the aortic large support pressing, retracting and installing system comprises a plurality of the aortic large support pressing, retracting and installing devices, wherein the aortic large support pressing, retracting and installing devices are arranged side by side, and the heights of the aortic large support pressing, retracting and installing devices are the same.

The arrangement of the pressing and retracting devices of the large aortic stent can realize simultaneous compression of the whole stent, and ensure the radial uniform compression of the stent.

As a further embodiment of the present invention, the aortic stent compression and retraction device system includes a linkage long cylinder, wherein the positions corresponding to the tops of the aortic stent compression and retraction device are respectively provided with a plurality of raised rotation adjusting rings, and the linkage long cylinder sequentially passes through the plurality of rotation adjusting rings. The linkage of a plurality of aortic large stent compression and retraction devices is realized, and each aortic large stent compression and retraction device is provided with a separate buckle, so that the compressed section-by-section release of each component can be realized, the section-by-section retraction in the stent retraction process is ensured, and the damage to the sheath of the original stent conveying system is avoided.

As a further embodiment of the invention, a plurality of aorta stents are pressed back to two sides of the device, and a plurality of fixed front inner rings, fixed rear inner rings and the base are connected through fixed long cylinders.

The invention has the beneficial effects that:

(1) the stent has uniform compression process, ensures the original shape of the stent, ensures the accuracy of the positions of the opening, the slotting, the sewing branches and the like and the position of the original stent, is beneficial to the positioning of the positions of the opening, the slotting, the sewing branches and the like of the X-ray perspective line, and avoids the corresponding branch vascular occlusion and the corresponding visceral organ ischemic necrosis caused by inaccurate alignment.

(2) The integrity of the stent is protected so that it can fully perform its insulating function.

(3) The repacking components are released section by section, and the stent is sequentially and continuously repacked, so that the sheath of the original stent conveying system can be protected to the maximum extent to be smooth, and the stent conveying system can be more easily sent into a blood vessel.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, 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 invention and not to limit the invention.

FIG. 1 is a drawing of an aortic large stent compression and retraction system of the present invention;

FIG. 2 is a drawing of the aortic stent compression and retraction device of the present invention; wherein a is a pre-compression state and b is a post-compression state;

FIG. 3 is a block diagram of the gear tooth of the present invention; wherein a is a pre-compression state and b is a post-compression state;

wherein, 1, base, 2, fixed preceding inner ring, 3, fixed long cylinder, 4, the tooth is dialled to the gear, 5, the long cylinder of linkage, 6, fixed back inner ring, 7, rotation adjustable ring, 8, buckle, 9, nut, 10, gear, 11, dial the tooth.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The invention designs a device and a system for compressing, retracting and installing an aortic great support, which are used for compressing and rotating the aortic great support. After the artery large support is released outside the operating table, the large support can be uniformly compressed and accurately reloaded into the compressor of the original support conveying system after operations such as opening holes, slotting, sewing branches, trimming the length of the support and the like.

The existing operation method is to manually wind and roughly compress a stent by flexible tools such as infusion tubes, leather strips, sutures and the like, the problems of stent distortion and deformation and the like are caused in the actual operation process, the outer sheath of the original stent conveying system is easy to damage, the damaged outer sheath scratches a blood vessel when the blood vessel is sent into the blood vessel, the stent deformation caused by compression is easy to cause position displacement such as hole opening, slotting, branch sewing and the like, the large stent can not be accurately positioned to the opening of a branch artery when released in vivo, and then the branch artery is blocked, and the life of a patient is seriously or even endangered. In addition, other compression devices or violent reinstallation methods are prone to damage to the stent outer membrane, resulting in stent rupture.

As shown in fig. 1, 2 and 3, in the compression reloading device of the present invention, a compression space with an adjustable size is formed by the fixed front inner ring 2, the fixed rear inner ring 6 and the plurality of gear shifting teeth 4, the gear 10 is a cylindrical gear, one end of the gear shifting teeth 4 is fixedly connected with a side wall of the gear, the cylindrical gear 10 is a hollow structure, a sawtooth structure parallel to a central axis of the cylinder is arranged on an outer side wall, and the plurality of gear shifting teeth 4 are annularly arranged and located inside a circle. The plurality of teeth resemble a circular string which can rotate around the axis of rotation of the gear 10 after the inner ring is rotationally fixed, gradually crossing inward or outward in the circular interior, and when the inward limit is reached, the plurality of teeth gather together and the compression space disappears (as shown in fig. 2 or fig. 3). The size of the compression space can be adjusted in this process.

Wherein, the fixed front inner ring 2 and the fixed rear inner ring 6 provide the function of supporting the gear shifting teeth, and the rotation of the rotary adjusting ring 7 drives the rotation of the gear 10. Because the internal teeth of the rotary adjusting ring 7 are meshed with the external teeth of the plurality of gears 10, the rotation of the rotary adjusting ring 7 drives the gears 10 to rotate around the connecting shafts of the gears.

The base 1 has the function of fixing the whole body, and the shape of the base 1 is matched with the fixed front/rear inner ring, so that the gear shifting position is further fixed.

Buckle and base relevant position all have places the hole for place the spring, buckle 8 passes through the spring restraint with base 1, and the spring setting has realized that buckle 8's position is rotatory at the within range of certain angle, and behind the protruding outer sawtooth structure cooperation with rotatory adjustable ring of the point type of buckle 8, can realize the fixed of rotatory adjustable ring 7 in a certain position.

The device can realize the adjustment of the size of the compression space, the adjustment is uniform, the formed compression force is uniform, the problems of support deformation, insufficient compression and the like caused by other previous reinstalling modes are solved, and therefore the smooth pressing and withdrawing installation of the support is effectively realized.

The aortic large support pressing and retracting and installing system comprises a plurality of the aortic large support pressing and retracting and installing devices, the aortic large support pressing and retracting and installing devices are arranged side by side, and the heights of the aortic large support pressing and retracting and installing devices are the same.

The large aorta stent compression and retraction device is connected with the fixed long cylinder 3 through the linkage long cylinder 5, the linkage long cylinder 5 is connected with the rotation adjusting ring 7 at the top of the tooth poking part of the gears, and the linkage long cylinder 5 can adjust the angle of the large aorta stent compression and retraction device in a linkage manner, so that uniform compression force to the stent is formed. The fixing long cylinder 3 can realize the fixation of the positions of the plurality of aortic great support pressing and retracting devices relative to the base, thereby preventing the movement of the aortic great support pressing and retracting devices. One end of the fixed long cylinder 3 is provided with a nut 9, and the nut 9 plays a role in fixing each adjusting ring 7.

When each set of tightening devices are simultaneously stirred by the drawable linkage long cylinder, the rotation self-locking of the rotary adjusting ring 7 is ensured, so that the internal radial contraction of the tightening devices is realized when the shifting fork is linked finally, and the vascular stent is compressed to the required diameter. And the reloading assembly can be released section by section, and the stent can be reloaded in sequence and continuously, so that the sheath of the original stent conveying system can be protected to the maximum extent to be smooth, and the stent can be more easily sent into a blood vessel.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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

1. The utility model provides an aorta big support presses back to adorn device which characterized in that: comprises a fixed front inner ring, a fixed rear inner ring and a plurality of gear shifting teeth;

the front fixed inner ring and the rear fixed inner ring are both ring structures, a plurality of through holes are formed in the front fixed inner ring and the rear fixed inner ring, the through holes are respectively opposite to the hollow structures of a plurality of gears, and the gears are connected with the front fixed inner ring and the rear fixed inner ring through connecting shafts;

the rotary adjusting ring is of a ring body structure, the inner side wall is provided with a sawtooth structure meshed with the gear, and the gear is meshed with the inner side wall of the fixed front inner ring and the fixed rear inner ring.

2. The aortic large stent compression retraction device as claimed in claim 1, wherein: two long-strip shifting teeth are arranged on one gear shifting tooth, the two shifting teeth penetrate through the front of the anticlockwise adjacent shifting teeth, and when the anticlockwise circulation is carried out to the last gear shifting tooth, the two shifting teeth of the last gear do not penetrate through the anticlockwise adjacent shifting teeth.

3. The aortic large stent compression retraction device as claimed in claim 1, wherein: the width of the long strip teeth of the shifting teeth is gradually reduced from one end connected with the gear to the free end, the length of each long strip tooth is 15cm, the distance between every two long strip teeth is 1cm, and the shifting teeth are made of hard plastic materials.

4. The aortic large stent compression retraction device as claimed in claim 1, wherein: the circumferential included angles among the plurality of gear shifting teeth are the same, and the angle is determined by the number of groups of finally adopted gear shifting teeth.

5. The aortic large stent compression retraction device as claimed in claim 1, wherein: the pressing and withdrawing device comprises a base, the upper portion of the base is in an inward concave arc shape, the whole formed by the inner ring before fixing and the inner ring after fixing is fixed at the arc position of the base, and two ends of the inner ring before fixing and two ends of the inner ring after fixing are fixedly connected with the base.

6. The aortic large stent compression retraction device as claimed in claim 1, wherein: the utility model discloses a set up the sawtooth structure, the buckle is set up at one side top of base, the middle part and the base swing joint of buckle, the buckle sets up the bellied movable rod of point type for one end, and the setting angle is become with the movable rod to the arch of point type, and fixed back inner ring body lateral wall sets up the sawtooth structure, and the protruding sawtooth structure with fixed back inner ring body lateral wall of point type cooperatees.

7. The aortic large stent compression retraction device as claimed in claim 1, wherein: the number of the gear shifting teeth can be set to be 6-10 according to actual requirements.

8. The utility model provides an aorta big support presses back dress system which characterized in that: the aortic large support pressing and retracting device is composed of a plurality of the aortic large support pressing and retracting devices, the aortic large support pressing and retracting devices are arranged side by side, and the heights of the aortic large support pressing and retracting devices are the same.

9. The aortic large stent compression retraction system as claimed in claim 8, wherein: the aortic large support pressing and retracting device system comprises a linkage long cylinder, wherein the positions corresponding to the tops of a plurality of aortic large support pressing and retracting device devices are respectively provided with a plurality of rotating adjusting rings, and the linkage long cylinder sequentially penetrates through the plurality of rotating adjusting rings.

10. The aortic large stent compression retraction system as claimed in claim 8, wherein: the plurality of aorta large supports are pressed back to two sides of the device, and the plurality of fixed front inner rings, the fixed back inner rings and the base are connected through the fixed long cylinders.