CN113262089B

CN113262089B - Tracheal stent

Info

Publication number: CN113262089B
Application number: CN202110638402.4A
Authority: CN
Inventors: 刘诗晴; 胡成平; 潘频华; 曹立明
Original assignee: Xiangya Hospital of Central South University
Current assignee: Xiangya Hospital of Central South University
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-10-04
Anticipated expiration: 2041-06-08
Also published as: CN113262089A

Abstract

The invention provides a tracheal stent, which comprises an operating device and a changeable stent, wherein the changeable stent comprises a telescopic section and a plurality of supporting rods, the telescopic section is provided with a plurality of sections, each section of the telescopic section is arc-shaped, the plurality of sections of the telescopic section are sequentially nested, each telescopic section is vertically connected with a supporting rod, the supporting rods are connected to the outer walls of the telescopic sections, which expose the adjacent outer telescopic sections, a supporting net is connected between the two adjacent supporting rods, the operating device is used for drawing out the innermost telescopic section and pulling the telescopic section to extend into a closed ring, the integral structure of the traditional straight-tube stent is converted into the frame structure of the changeable stent, the placement of the stent is more flexible, the changeable stent is placed near a diseased part, the changeable stent is expanded by using the operating device to support the tracheal wall, different supporting rods can be selected to adapt to different pathological shapes, and the adaptability of the stent to different pathological changes is improved.

Description

Tracheal stent

Technical Field

The invention relates to the field of medical instruments, in particular to a tracheal stent.

Background

Patients with adult/pediatric tracheal stenosis, for various reasons, are typically treated with tracheostomy. The angioplasty comprises narrow section resection end anastomosis, sliding anastomosis and the like, and has high postoperative care difficulty and high complication probability, including trachea softening, anastomotic opening cracking, excessive proliferation of scar tissue at an anastomosis position, restenosis and the like;

in recent years, an endotracheal stent begins to become a choice for treating tracheal stenosis, the traditional straight-tube stent has poor adaptability and can be used for treating irregular tracheal lesions, such as patients with funnel-shaped tracheal stenosis, the straight-tube stent has poor anchoring and fixing performance and is easy to fall off, the treatment effect is influenced, and even the airway is blocked, so that the patients are suffocated.

Disclosure of Invention

The invention mainly aims to provide a tracheal stent, aiming at solving the problem of poor adaptability of the existing straight-tube stent;

in order to achieve the purpose, the technical scheme provided by the invention is as follows: the utility model provides a tracheal stent, includes operating means and change support, change the support including flexible section and many spinal branchs vaulting pole, flexible section has the multistage, and every section flexible section is the arc, the multistage flexible section is nested in proper order, each flexible section is connected with perpendicularly the bracing piece, the bracing piece is connected flexible section expose adjacent skin flexible section's outer wall, adjacent two be connected with the supporting network between the bracing piece, operating means is used for taking the inlayer flexible section and pulling flexible section extends to a closed ring.

Preferably, operating means includes handheld pole, driving motor, stationary housing, gear, first connecting rod, second connecting rod, first fixation clamp and second fixation clamp, stationary housing is the disc, stationary housing includes an upper fixed plate, a lower fixed plate and connects an upper fixed plate with round lateral wall between the lower fixed plate, an upper fixed plate a lower fixed plate with the lateral wall encloses into and puts the appearance space, just an upper fixed plate with lower fixed plate parallel arrangement, the one end of handheld pole with an upper fixed plate deviates from put one side fixed connection in appearance space, the lateral wall orientation put one side protrusion in appearance space and form round rack, the gear is acceptd put in the appearance space, an upper fixed plate is formed with link up put the spacing groove on the round of appearance space and exterior space, a lower fixed plate is formed with link up put the spacing groove in appearance space and exterior space, driving motor's output shaft passes upper spacing groove with the axle center of gear is connected, the gear deviates from one side of driving motor with the one end fixed connection of first connecting rod, the other end of first connecting rod with the lower limit spacing groove of second fixation clamp section is used for the second fixation clamp connection, the telescopic connection section of the second fixation clamp, the other end of the telescopic connection of connecting rod.

Preferably, the telescopic section has five sections, the side surface of the telescopic section on the outermost layer is also provided with a clamping bulge, and one end of the telescopic section on the innermost layer, which extends out of the rest telescopic sections, is provided with a clamping baffle.

Preferably, the first fixing clamp includes a first connecting plate, a first spring, a first upper clamping block and a first lower clamping block, one side of the first connecting plate is fixedly connected with the first lower clamping block, the first connecting plate is formed with an accommodating space, the first spring is accommodated in the accommodating space, the first upper clamping block and the first lower clamping block are arranged in parallel, the first connecting plate is perpendicular to the first upper clamping block, the first connecting plate is further formed with a sliding through groove penetrating the accommodating space and an external space, the first spring is perpendicular to the first lower clamping block, one end of the first spring is fixedly connected with the inner wall of the first connecting plate, the first upper clamping block extends into the accommodating space and is fixedly connected with the other end of the first spring, and electromagnets are accommodated in the first upper clamping block and the first lower clamping block;

the second fixing clamp comprises a second connecting plate, a second spring, an upper second clamping block and a lower second clamping block, one side of the second connecting plate is fixedly connected with the lower second clamping block, an accommodating space is formed in the second connecting plate, the second spring is accommodated in the accommodating space, the upper second clamping block and the lower second clamping block are arranged in parallel, the second connecting plate is perpendicular to the upper second clamping block, a sliding through groove penetrating the accommodating space and the outer space is further formed in the second connecting plate, the second spring is perpendicular to the lower second clamping block, one end of the second spring is fixedly connected with the inner wall of the second connecting plate, the upper second clamping block extends into the accommodating space and is fixedly connected with the other end of the second spring, and electromagnets are accommodated in the upper second clamping block and the lower second clamping block.

Preferably, the bracing piece includes connecting rod, first arc pole and second arc pole, the one end of connecting rod with flexible section fixed connection, the other end of connecting rod with first arc pole passes through the bolt and articulates, first arc pole deviates from the one end of connecting rod with second arc pole passes through the bolt and articulates.

Preferably, the telescopic sections are all in a circular truncated cone shape.

Preferably, a tracheal stent still includes the endoscope, the endoscope includes camera lens and connecting pipe, the camera lens with the one end fixed connection of connecting pipe, the other end of connecting pipe with bottom plate fixed connection.

Preferably, the tracheal stent further comprises a control part, wherein the control part comprises a controller, a display and a control button, the control button comprises a first clamping button, a second clamping button and a rotating button, the first clamping button, the second clamping button and the rotating button are electrically connected with the controller, and the display is electrically connected with the lens; the electromagnet of the first fixing clamp and the electromagnet of the second fixing clamp are electrically connected with the controller, and the controller is electrically connected with the driving motor.

Preferably, the telescopic section and the support rod are both metal structural members.

Preferably, flexible section is first flexible section, the flexible section of second, the flexible section of third, the flexible section of fourth and the flexible section of fifth from inside to outside in proper order, the flexible section of second the flexible section of third the flexible section of fourth with the flexible section of fifth all is formed with and is used for the gliding sliding tray of bracing piece.

Compared with the prior art, the invention at least has the following beneficial effects:

according to the technical scheme, the integral structure of the traditional straight-tube type support is converted into the frame structure of the variable support, the support is mainly supported by the supporting force of the frame, the complete circular ring is changed into a section of telescopic circular arc, the support is placed more flexibly, the variable support is placed near a diseased region, the variable support is unfolded by using an operation device to support the tracheal wall, different supporting rods can be selected to adapt to different diseased shapes, and the adaptability of the support to different diseased shapes is greatly improved.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of a changeable support of a tracheal support according to the present invention;

fig. 2 is a schematic structural view of an operating device of a tracheal stent according to the present invention;

FIG. 3 is a schematic view of the structure in the direction A of FIG. 1;

FIG. 4 is a schematic view of the structure of FIG. 1 in the direction B;

FIG. 5 is an enlarged view at C of FIG. 2;

fig. 6 is a schematic top view of a fixed housing of an operating device of a tracheal stent according to the present invention;

fig. 7 is a schematic bottom view of a fixed housing of an operating device for a tracheal stent according to the present invention;

fig. 8 is a schematic front view of a telescopic section of a tracheal stent according to the present invention when retracted;

fig. 9 is a schematic top view of the telescopic section of the tracheal stent of the present invention. The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Operating device	16	Lower limiting groove
2	Variable support	17	Clamping bulge
				3	Expansion section	18	Clamping baffle
4	Support rod	19	First connecting plate
				5	Supporting net	20	First spring
6	Hand-held rod	21	First upper clamping block
				7	Driving motor	22	First lower clamping block
8	Fixed outer casing	23	Electromagnet
				9	Gear wheel	24	Connecting rod
10	First connecting rod	25	First arc-shaped rod
				11	Second connecting rod	26	Second arc-shaped rod
12	First fixing clamp	27	Bolt
				13	Second fixing clamp	28	Endoscope with a detachable handle
14	Rack rail	29	Lens barrel
				15	Upper limiting groove	30	Connecting pipe

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

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.

It should be noted that all directional indicators (such as up, down, left, right, front, and back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 9, the present invention provides a tracheal stent.

Referring to fig. 1 and 2, the tracheal stent comprises an operating device 1 and a variable support 2, wherein the variable support 2 comprises a telescopic section 3 and a plurality of support rods 4, the telescopic section 3 has a plurality of sections, each section of the telescopic section 3 is arc-shaped, the plurality of sections of the telescopic section 3 are sequentially nested, each telescopic section 3 is vertically connected with the support rod 4, the support rods 4 are connected with the outer wall of the telescopic section 3 exposed out of the adjacent outer layer, a support net 5 is connected between the adjacent two support rods 4, and the operating device 1 is used for drawing the telescopic section 3 at the innermost layer and pulling the telescopic section 3 to extend into a closed ring.

Convert traditional straight cartridge type support's overall structure into the frame construction who changes support 2, mainly utilize the holding power of frame itself to support, become one section telescopic circular arc with complete ring, make placing of support more nimble, will change support 2 earlier and place near the pathological change position, utilize operating means 1 to expand the support in order to carry out the trachea wall with changing support 2 afterwards, still can choose different bracing pieces 4 to adapt to different pathological changes shapes for use, very big promotion the support to the adaptability of different pathological changes.

Referring to fig. 2, 4, 5 and 6, preferably, the operating device 1 includes a handheld rod 6, a driving motor 7, a fixed housing 8, a gear 9, a first connecting rod 10, a second connecting rod 11, a first fixing clip 12 and a second fixing clip 13, the fixed housing 8 is in a disc shape, the fixed housing 8 includes an upper fixed plate, a lower fixed plate and a circle of side walls connected between the upper fixed plate and the lower fixed plate, the upper fixed plate, the lower fixed plate and the side walls enclose a containing space, the upper fixed plate and the lower fixed plate are arranged in parallel, one end of the handheld rod 6 is fixedly connected with one side of the upper fixed plate departing from the containing space, one side of the side walls facing the containing space protrudes to form a circle of rack 14, the gear 9 is contained in the containing space, the upper fixed plate is formed with a circle of upper limiting groove 15 penetrating through the containing space and an external space, the lower fixed plate is formed with a circle of upper limiting groove 16 penetrating through the containing space and the external space, an output shaft of the driving motor 7 passes through the upper limiting groove 15 of the gear 9, the other end of the upper fixed plate is connected with the second fixing clip 13, one end of the second fixing clip 13 is connected with the second fixing clip 13, and the second connecting rod 13 is connected with the first fixing clip 13, and the second fixing clip 13.

Specifically, when the telescopic support is used, the second fixing clamp 13 is clamped on the outermost telescopic section 3, the first fixing clamp 12 is clamped on the innermost telescopic section 3, the driving motor 7 is started, the driving motor 7 is preferably a servo motor, and when the telescopic support is started, a certain pulse signal is given to the servo motor to enable the servo motor to rotate for a certain number of turns, at this time, the servo motor can drive the gear 9 to rotate, the gear 9 is meshed with the toothed rail 14, and moves along the extending direction of the upper limiting groove 15 under the limitation of the output shaft, the upper limiting groove 15, the lower limiting groove 16 and the first connecting rod 10, so that the innermost telescopic section 3 is drawn out, and finally the innermost telescopic section 3 is in contact with the outermost telescopic section 3, so that a complete circular ring is formed to achieve a supporting effect.

Referring to fig. 3, 4 and 8, preferably, the telescopic segments 3 have five segments, the side surface of the telescopic segment 3 at the outermost layer is further formed with a clamping protrusion 17, and one end of the telescopic segment 3 at the innermost layer, which extends out of the other telescopic segments 3, is formed with a clamping baffle 18; the clamping protrusion 17 is specifically two clamping plates arranged at intervals, the second fixing clamp 13 is clamped between the two clamping plates, the first fixing clamp 12 is clamped at one side, facing the innermost layer, of the telescopic section 3 of the clamping baffle 18, and is clamped on the side wall of the innermost layer of the telescopic section 3.

Referring to fig. 5, preferably, the first fixing clip 12 includes a first connecting plate 19, a first spring 20, a first upper clamping block 21, and a first lower clamping block 22, one side of the first connecting plate 19 is fixedly connected to the first lower clamping block 22, the first connecting plate 19 forms an accommodating space, the first spring 20 is accommodated in the accommodating space, the first upper clamping block 21 and the first lower clamping block 22 are arranged in parallel, the first connecting plate 19 is perpendicular to the first upper clamping block 21, the first connecting plate 19 further forms a sliding through groove penetrating the accommodating space and an external space, the first spring 20 is perpendicular to the first lower clamping block 22, one end of the first spring 20 is fixedly connected to an inner wall of the first connecting plate 19, the first upper clamping block 21 extends into the accommodating space and is fixedly connected to the other end of the first spring 20, and both the first upper clamping block 21 and the first lower clamping block 22 have an accommodating hole 23;

specifically, when clamping is required, the electromagnets 23 are energized, the two electromagnets 23 attract each other to offset the elastic force of the spring, so that the first upper clamping block 21 and the first lower clamping block 22 approach each other until the outermost telescopic section 3 is clamped, and when loosening is required, the first upper clamping block 21 and the first lower clamping block 22 are separated from each other only by the elastic force of the spring as long as power is off.

The second fixing clamp 13 comprises a second connecting plate, a second spring, an upper second clamping block and a lower second clamping block, one side of the second connecting plate is fixedly connected with the lower second clamping block, an accommodating space is formed in the second connecting plate, the second spring is accommodated in the accommodating space, the upper second clamping block and the lower second clamping block are arranged in parallel, the second connecting plate is perpendicular to the upper second clamping block, a sliding through groove penetrating the accommodating space and an external space is further formed in the second connecting plate, the second spring is perpendicular to the lower second clamping block, one end of the second spring is fixedly connected with the inner wall of the second connecting plate, the upper second clamping block extends into the accommodating space and is fixedly connected with the other end of the second spring, and the electromagnets 23 are accommodated in the upper second clamping block and the lower second clamping block.

Specifically, when clamping is needed, the electromagnets 23 are powered on, the two electromagnets 23 attract each other to offset the elastic force of the spring, so that the second upper clamping block and the second lower clamping block are close to each other until the outermost telescopic section 3 is clamped, and when loosening is needed, the elastic force of the spring can enable the second upper clamping block and the second lower clamping block to be away from each other only by power failure.

Referring to fig. 3 and 4, preferably, the support rod 4 includes a connecting rod 24, a first arc rod 25 and a second arc rod 26, one end of the connecting rod 24 is fixedly connected to the telescopic section 3, the other end of the connecting rod 24 is hinged to the first arc rod 25 through a bolt 27, and one end of the first arc rod 25 away from the connecting rod 24 is hinged to the second arc rod 26 through a bolt 27.

The adoption of the arc-shaped rod is helpful for improving the adaptability of the support rod 4, the support rod 4 is divided into three sections, and each section is hinged through the bolt 27, so that the angle between every two connected sections can be adjusted, and the adaptability of the support rod 4 is further improved.

Referring to fig. 8, preferably, the telescopic section 3 is in a circular truncated cone shape, and one end of the circular truncated cone is large and the other end is small, so that the structure can help the telescopic section 3 to be limited automatically.

Preferably, the tracheal stent further comprises an endoscope 28, the endoscope 28 comprises a lens 29 and a connecting pipe 30, the lens 29 is fixedly connected with one end of the connecting pipe 30, and the other end of the connecting pipe 30 is fixedly connected with the lower fixing plate.

The endoscope 28 is added, so that the interior of the trachea can be observed conveniently, and the operation of a doctor is more accurate.

Preferably, the tracheal stent further comprises a control component, the control component comprises a controller, a display and control buttons, the control buttons comprise a first clamping button, a second clamping button and a rotating button, the first clamping button, the second clamping button and the rotating button are all electrically connected with the controller, and the display is electrically connected with the lens 29; the electromagnet 23 of the first fixing clamp 12 and the electromagnet 23 of the second fixing clamp 13 are both electrically connected with the controller, and the controller is electrically connected with the driving motor 7.

Specifically, when the first clamping button is pressed down, the first clamping button sends a first electric signal to the controller, the controller controls the electromagnet 23 of the first fixing clamp 12 to be electrified, when the first clamping button is pressed down again, the first clamping button sends a second electric signal to the controller, and the controller controls the electromagnet 23 of the first fixing clamp 12 to be powered off;

when the second clamping button is pressed down, the second clamping button sends a third electric signal to the controller, the controller controls the electromagnet 23 of the second fixing clamp 13 to be electrified, when the second clamping button is pressed down again, the second clamping button sends a fourth electric signal to the controller, and the controller controls the electromagnet 23 of the second fixing clamp 13 to be powered off;

when the rotary button is pressed down, the rotary button sends a fifth electric signal to the controller, the controller controls the driving motor 7 to move for a specified number of turns according to the fifth electric signal, when the rotary button is pressed down again, the rotary button sends a sixth electric signal to the controller, the controller controls the driving motor 7 to move reversely for a specified number of turns according to the sixth electric signal,

preferably, the telescopic section 3 and the support rod 4 are both metal structural members, and the metal structure is suitable for the use condition of the tracheal stent.

Preferably, the telescopic sections 3 are a first telescopic section, a second telescopic section, a third telescopic section, a fourth telescopic section and a fifth telescopic section from inside to outside in sequence, sliding grooves for the sliding of the supporting rods 4 are formed in the second telescopic section, the third telescopic section, the fourth telescopic section and the fifth telescopic section, and the sliding grooves are arranged so that the supporting rods 4 are not interfered when moving along with the corresponding telescopic sections 3;

the one end that the fifth flexible section deviates from clamping baffle 18 still adds and is equipped with magnet, and the magnet add establish make first flexible section with the contact of fifth flexible section is inseparabler.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.

Claims

1. The utility model provides a tracheal stent, a serial communication port, including operating means and change support, the change support is including flexible section and many spinal branchs vaulting pole, flexible section has the multistage, and every section flexible section is the arc, the multistage flexible section is nested in proper order, each flexible section is connected with perpendicularly the bracing piece, the bracing piece is connected flexible section expose adjacent skin flexible section's outer wall, adjacent two be connected with the supporting network between the bracing piece, operating means is used for taking the inlayer flexible section and pulling flexible section extends to a closed ring, wherein, the bracing piece includes connecting rod, first arc pole and second arc pole, the one end of connecting rod with flexible section fixed connection, the other end of connecting rod with first arc pole passes through the bolt and articulates, first arc pole deviates from the one end of connecting rod with the second arc pole passes through the bolt and articulates.

2. The tracheal stent of claim 1, wherein the operating device comprises a handheld rod, a driving motor, a fixed housing, a gear, a first connecting rod, a second connecting rod, a first fixing clamp and a second fixing clamp, the fixed housing is disc-shaped, the fixed housing comprises an upper fixed plate, a lower fixed plate and a circle of side wall connected between the upper fixed plate and the lower fixed plate, the upper fixed plate, the lower fixed plate and the side wall enclose a containing space, the upper fixed plate is parallel to the lower fixed plate, one end of the handheld rod is fixedly connected with one side of the upper fixed plate, which is far away from the containing space, the side wall protrudes towards one side of the containing space to form a circle of rack, the gear is contained in the containing space, the upper fixed plate is provided with a circle of upper limiting groove, which penetrates through the containing space and the outer space, the lower fixed plate is provided with a circle of lower limiting groove, which penetrates through the containing space and the outer space, an output shaft of the driving motor penetrates through the upper limiting groove to be connected with an axis of the gear, one side of the gear, which is far away from one end of the first fixing clamp, is connected with the second fixing clamp, and the other end of the second fixing clamp is connected with the second fixing clamp, and the second fixing clamp is connected with the outermost fixing clamp.

3. A tracheal stent as claimed in claim 2, wherein the number of the telescopic sections is five, the side surface of the telescopic section at the outermost layer is further formed with a clamping protrusion, and one end of the telescopic section at the innermost layer extending out of the rest of the telescopic sections is formed with a clamping baffle.

4. The tracheal stent of claim 2, wherein the first fixing clip comprises a first connecting plate, a first spring, a first upper clamping block and a first lower clamping block, one side of the first connecting plate is fixedly connected with the first lower clamping block, the first connecting plate is provided with an accommodating space, the first spring is accommodated in the accommodating space, the first upper clamping block is arranged in parallel with the first lower clamping block, the first connecting plate is perpendicular to the first upper clamping block, the first connecting plate is further provided with a sliding through groove penetrating the accommodating space and an external space, the first spring is perpendicular to the first lower clamping block, one end of the first spring is fixedly connected with the inner wall of the first connecting plate, the first upper clamping block extends into the accommodating space and is fixedly connected with the other end of the first spring, and the first upper clamping block and the first lower clamping block are both provided with accommodating electromagnets;

5. A tracheal stent as in claim 1, wherein the telescoping sections are all truncated cone shaped.

6. The tracheal stent of claim 4, further comprising an endoscope, wherein the endoscope comprises a lens and a connecting tube, the lens is fixedly connected with one end of the connecting tube, and the other end of the connecting tube is fixedly connected with the lower fixing plate.

7. The tracheal stent of claim 6, further comprising a control component, wherein the control component comprises a controller, a display, and control buttons, wherein the control buttons comprise a first clamping button, a second clamping button, and a rotation button, wherein the first clamping button, the second clamping button, and the rotation button are electrically connected to the controller, and wherein the display is electrically connected to the lens; the electromagnet of the first fixing clamp and the electromagnet of the second fixing clamp are electrically connected with the controller, and the controller is electrically connected with the driving motor.

8. A tracheal stent as in claim 1, wherein the telescoping section and the support rod are both metal structural members.

9. The tracheal stent of claim 2, wherein the telescopic sections are a first telescopic section, a second telescopic section, a third telescopic section, a fourth telescopic section and a fifth telescopic section from inside to outside, and the second telescopic section, the third telescopic section, the fourth telescopic section and the fifth telescopic section are all provided with sliding grooves for sliding of the support rods.