CN217696825U - Aorta covered stent rotation angle measuring tool - Google Patents

Abstract

The utility model relates to an aorta covered stent rotation angle measuring tool belongs to medical instrument technical field. The device comprises a first upright post, a second upright post, a chassis, an annular track and a measuring column; an annular rail is arranged on the chassis along the horizontal plane, and a movable upright post I which can move along the annular rail is arranged on the annular rail and is vertical to the horizontal plane; a second upright post vertical to the horizontal plane is arranged on the circle center of a virtual circle where the annular track is located; and the upper end face of the first upright post is provided with a measuring post, and the central axis of the measuring post is vertically intersected with the central axis of the second upright post. Through the utility model discloses can simulate the true scene of using of support, through the connection of simulation ascending aorta-descending aorta to the angle that the marker skew after the accurate measurement is crooked under the tectorial membrane support bending state directly obtains the true crooked skew degree of support. The testing device has the advantages of simple structure, convenience and rapidness in use, high simulation degree and stable and reliable detection result.

Description

Aorta covered stent rotation angle measuring tool

Technical Field

The utility model relates to an aorta covered stent rotation angle measuring tool belongs to medical instrument technical field.

Background

The treatment of aortic arch disease all needs to use tectorial membrane support to completely isolate pathological changes, but aortic arch sends out three important branches, these three branch arteries supply blood for cranium and upper limbs, when the arcus disease reaches one or several in three branches, tectorial membrane support's cover need exceed pathological changes again can completely isolate pathological changes, though isolated pathological changes this moment but probably isolated branch artery on the arcus simultaneously, cause cerebral ischemia. In order to isolate the lesion and simultaneously reserve a channel leading to the branch artery on the arch, a window is opened on a covered stent in advance, the size of the window is similar to that of the opening of the branch artery to be isolated on the arch, and thus, a blood flow channel leading to the branch artery on the arch can be reserved while the lesion part is covered. In this case, the alignment of the position of the window on the fenestrated stent graft with the ostium of the branch artery becomes critical. The method adopted at present is a space overturning method, which is characterized in that when a covered stent is conveyed into a human body, a fenestrated hole is firstly towards the foot direction of the human body, the stent is positioned on the superficial layer of descending aorta by utilizing ascending aorta after reaching an aortic arch, the stent is overturned, and after the stent is overturned, a window is overturned from the foot direction towards the human body to the head direction towards the human body, so that the window is opened towards a branch artery at the top of the arch, but the ascending aorta of the human body is not positioned right above the descending aorta and has a certain angle, and the angle of each person is slightly different, so that the dislocation between the window of the stent and the branch artery opening can be caused, but the dislocation is unknown. Therefore, the technical problem of how to detect the deviation degree of the superior arch branch artery opening and the superior arch branch artery opening of the covered stent needs to be solved urgently in the technical field.

Disclosure of Invention

The utility model aims at solving the technical problem of how to detect the deviation degree of the upper branch artery opening and the upper branch artery opening of the covered stent.

In order to solve the above problems, the present invention provides a tool for measuring the rotation angle of an aortic stent graft, which comprises a first upright, a second upright, a chassis, an annular track and a measuring column; an annular rail is arranged on the chassis along the horizontal plane, and a movable upright post I which can move along the annular rail is arranged on the annular rail and is vertical to the horizontal plane; a second upright post vertical to the horizontal plane is arranged at the center of a virtual circle where the annular track is located; and a measuring column is arranged on the upper end face of the first upright column, and the central axis of the measuring column is vertically intersected with the central axis of the second upright column.

Preferably, the second upright post is a truncated cone, and the central axis of the truncated cone is perpendicular to the horizontal plane and passes through the center of the circular track.

Preferably, a second marking line is arranged along a conical generatrix on the outer wall of the upright post.

Preferably, the annular track comprises a circular inner ring and a circular outer ring concentric with the inner ring; the inner ring side wall and the outer ring side wall which are vertical to the horizontal plane are respectively arranged along the circumferential lines of the inner ring and the outer ring; a track space for moving the upright post I is arranged between the side wall of the inner ring and the side wall of the outer ring; and scales are arranged on the side wall of the outer ring.

Preferably, the first upright post is a cylinder, and a first marking line is arranged on the outer wall of the first upright post and is parallel to the central axis of the first upright post.

Preferably, the measuring column is a cylinder or a truncated cone, and the circumference of the bottom surface of the cylinder or the truncated cone is provided with scales; the outer wall of the cylinder or the truncated cone is provided with scales.

Preferably, the second upright post is fixedly connected with the chassis; the measuring column is fixedly connected with the first upright column.

Compared with the prior art, the utility model discloses following beneficial effect has:

in the past, computer simulation can be used to obtain such deviation angles, but the computer simulation requires all the physical parameters of the stent, such as bending degree and elasticity of the material, and large errors often exist between the actual material and the stent. Because the support itself can not distort, so use the utility model provides a device can simulate and directly measure the true bending deflection number of degrees of all brand supports in real environment. The device provided by the utility model can simulate the connection between the ascending aorta and the descending aorta, and accurately measure the deviation angle of the marker after bending under the bending state of the covered stent. The utility model provides a testing arrangement simple structure, convenient to use is swift, and the fidelity is high, and the testing result is reliable and stable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Reference numerals: 1. a first upright post; 2. a second upright post; 3. a chassis; 4. an annular track; 5. a measuring column; 6. a covered stent; 7. marking a line III; 8. marking a line I; 9. marking a line II; 10.0 degree line; 11.180 degree line.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail as follows:

as shown in fig. 1, the technical solution adopted by the present invention is to provide a tool for measuring the rotation angle of an aortic stent graft, which comprises a first upright 1, a second upright 2, a chassis 3, an annular track 4 and a measuring column 5; an annular track 4 is arranged on the chassis 3 along the horizontal plane, and a movable upright post 1 which can move along the annular track 4 is arranged on the annular track 4 and is vertical to the horizontal plane; a second upright post 2 vertical to the horizontal plane is arranged on the circle center of a virtual circle where the annular track 4 is located; the upper end face of the first upright post 1 is provided with a measuring post 5, and the central axis of the measuring post 5 is vertically intersected with the central axis of the second upright post 2. The second upright post 2 is a truncated cone, and the central axis of the truncated cone is vertical to the horizontal plane and passes through the center of the annular track 4. And a second marking line 9 is arranged along the conical generatrix on the outer wall of the second upright post 2. The annular track 4 comprises a circular inner ring and a circular outer ring concentric with the inner ring; the inner ring side wall and the outer ring side wall which are vertical to the horizontal plane are respectively arranged along the circumferential lines of the inner ring and the outer ring; a track space for moving the upright post I is arranged between the side wall of the inner ring and the side wall of the outer ring; the side wall of the outer ring is provided with scales. The first upright post 1 is a cylinder, a first marking line 8 is arranged on the outer wall of the first upright post 1, and the first marking line 8 is parallel to the central axis of the first upright post 1. The measuring column 5 is a cylinder or a truncated cone, and the circumference of the bottom surface of the cylinder or the truncated cone is provided with scales; the outer wall of the cylinder or the truncated cone is provided with scales. The second upright post 2 is fixedly connected with the chassis 3; the measuring column 5 is fixedly connected with the first upright column 1.

The utility model is used for measure and rise owner, when descending aorta is in different angles, what degree will misplace to branch arterial mouth on the branch artery on the bow and the bow of the last preset entrance to a cave of branch artery on the tectorial membrane support, obtain this data alright inform in advance that the art person is in the time advance when windowing on the tectorial membrane support.

Examples

The utility model discloses constitute by parts such as stand one 1, stand two 2, chassis 3, circular orbit 4 and measuring post 5 (as figure 1). The component chassis 3 is provided with a circular groove, the groove is arranged into an annular rail 4, a first upright post 1 is arranged in the annular rail 4, the outer wall of the groove is provided with a degree, the first upright post 1 is a cylindrical upright post, a nick which is used as a first marking line 8 is arranged on the outer wall of the first upright post 1 from top to bottom and perpendicular to the horizontal plane, the first upright post 1 can slide in the annular rail 4 at will, the first marking line 8 on the first upright post 1 corresponds to a scale mark on the outer wall of the groove, and the first upright post 1 represents the angle of rotation of the first upright post 1 around a second upright post 2.

The second upright post 2 is a conical upright post arranged in the center of the circular groove, a scribed line is arranged on the outer wall of the second upright post 2 along a conical generatrix to serve as a second marking line 9, and the second upright post 2 is connected with the circular groove through a cross-shaped part; and a virtual vertical plane which is vertical to the horizontal plane and comprises a second marking line 9 and a central axis of the second upright post 2 is arranged, two intersecting lines of the vertical plane and the outer wall of the groove are set as two scale marks, a scale mark close to the second marking line 9 is set as a 180-degree line 11, and a scale mark far away from the second marking line 9 is set as a 0-degree line 10.

The upper end of the first upright post 1 is connected with a measuring post 5; the measuring column 5 is a cylinder, the upper end face of the first upright post 1 is set to be a horizontal plane, the measuring column 5 is transversely arranged on the upper end face of the first upright post 1, and the outer side wall of the measuring column 5 is fixedly connected with the upper end face of the first upright post 1. The bottom surface of the measuring column 5 is a disc surface, scale marks are carved on the disc surface along the circumference, and scale marks extending to the side wall along the scale marks on the bottom surface disc surface of the measuring column 5 are arranged on the side wall of the measuring column 5. The highest point of the bottom surface disc surface of the measuring column 5, which is far away from the upper end surface of the first upright column 1, is provided with a 0-degree line 10.

When one end (tail end) of the covered stent 6 is tightly sleeved on the conical stand column-stand column two 2 (the head and tail ends of the stent of the covered stent 6 are provided with the red mark lines three 7, the head and tail red mark lines three 7 are positioned on a straight line, and the straight line is parallel to the central axis of the covered stent 6), the covered stent 6 is tightly sleeved on the stand column two 2, the red mark lines three 7 at the tail end of the covered stent 6 correspond to the mark lines two 9 engraved on the stand column two 2, at the moment, it is shown that the red mark lines three 7 at the tail end of the covered stent 6 correspond to the 180-degree lines 11 on the outer wall of the groove, and at the moment, the head end red mark lines three 7 of the covered stent 6 also correspond to the 180-degree lines 11 on the outer wall of the groove. After the positions are matched, the head end of the covered stent 6 can be bent at any angle (the stent can be bent but cannot be twisted).

The utility model discloses a use:

the utility model provides a stand two 2 is equivalent to descending aorta, and stand one 1 is equivalent to ascending aorta, is provided with the entrance to the fenestration of branch artery on the arch on the red mark line three 7 of head and the tail end along tectorial membrane support 6.

If the relative angle between the ascending main body and the descending main body of a certain patient is 60 degrees (namely, the included angle between a plane containing the central axis of the first upright post 1 and the central axis of the second upright post 2 and a plane containing the 180-degree line and the 0-degree line of the outer wall of the groove is 60 degrees on one side of the 0-degree line); when an operator wants to measure the difference between the orientation of a windowing hole in the covered stent after the covered stent reaches the arch top and turns over and the direction of 12 points (head direction) of the arch top when the main angle is raised and lowered, the tail end of the covered stent 6 is sleeved on the second upright post 2, the red marking line three 7 of the tail end of the stent is marked and aligned to the marking line two 9 on the second upright post 2, then the first upright post 1 moves to the corresponding 60-degree (corresponding angle scale on the outer wall of the groove) position in the annular track 4, then the covered stent 6 is bent, and the head end of the bent covered stent 6 is sleeved on the measuring column 5. The red mark line three 7 (representing the position of the windowing hole) at the head end of the tectorial membrane bracket 6 sleeved on the measuring column 5 can display corresponding accurate deviation degrees (representing an angle of 0 degree from the top end of the measuring column 5) at the position of the scale mark pointed by the chassis of the measuring column 5, and the 0 degree line at the top end of the measuring column 5 represents the actual aortic arch top 12 point direction, namely the actual direction of the branch artery mouth on the arch.

The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the present invention in any way and in any way, and it should be understood that modifications and additions may be made by those skilled in the art without departing from the scope of the present invention. Those skilled in the art can make various changes, modifications and evolutions equivalent to those made by the above-disclosed technical content without departing from the spirit and scope of the present invention, and all such changes, modifications and evolutions are equivalent embodiments of the present invention; meanwhile, any changes, modifications and evolutions of equivalent changes made to the above embodiments according to the essential technology of the present invention still belong to the scope of the technical solution of the present invention.

Claims (7)

1. The rotation angle measuring tool for the aorta covered stent is characterized by comprising a first upright post, a second upright post, a chassis, an annular track and a measuring post; an annular track is arranged on the chassis along the horizontal plane, and a movable upright post I which can move along the annular track is arranged on the annular track and is vertical to the horizontal plane; a second upright post vertical to the horizontal plane is arranged at the center of a virtual circle where the annular track is located; and a measuring column is arranged on the upper end face of the first upright column, and the central axis of the measuring column is vertically intersected with the central axis of the second upright column.

2. The aortic stent graft rotation angle measuring tool of claim 1, wherein the second column is a truncated cone, and the central axis of the truncated cone is perpendicular to the horizontal plane and passes through the center of the circular track.

3. The aortic stent graft rotation angle measuring tool of claim 2, wherein a second marking line is provided along a conical generatrix on the outer wall of the upright.

4. The aortic stent graft rotation angle measuring tool of claim 3, wherein the annular track comprises a circular inner ring and a circular outer ring concentric with the inner ring; the inner ring side wall and the outer ring side wall which are vertical to the horizontal plane are respectively arranged along the circumferential lines of the inner ring and the outer ring; a track space for moving the upright post I is arranged between the side wall of the inner ring and the side wall of the outer ring; and scales are arranged on the side wall of the outer ring.

5. The aortic stent graft rotation angle measuring tool of claim 4, wherein the first column is a cylinder, and the outer wall of the first column is provided with a first marking line which is parallel to the central axis of the first column.

6. The aortic stent graft rotation angle measuring tool of claim 5, wherein the measuring post is a cylinder or a truncated cone, and the circumference of the bottom surface of the cylinder or the truncated cone is provided with scales; the outer wall of the cylinder or the truncated cone is provided with scales.

7. The aortic stent graft rotation angle measuring tool of claim 6, wherein the second upright is fixedly connected with the chassis; the measuring column is fixedly connected with the first upright column.

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