CN116616972B - Tracheal stent shifter - Google Patents
Tracheal stent shifter Download PDFInfo
- Publication number
- CN116616972B CN116616972B CN202310905727.3A CN202310905727A CN116616972B CN 116616972 B CN116616972 B CN 116616972B CN 202310905727 A CN202310905727 A CN 202310905727A CN 116616972 B CN116616972 B CN 116616972B
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- CN
- China
- Prior art keywords
- sliding sleeve
- support plates
- guide wire
- sleeve
- track groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000008602 contraction Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 abstract description 8
- 230000037431 insertion Effects 0.000 abstract description 8
- 210000003437 trachea Anatomy 0.000 description 16
- 239000002245 particle Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 206010028980 Neoplasm Diseases 0.000 description 2
- 210000000621 bronchi Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003211 malignant effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 210000004881 tumor cell Anatomy 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 206010006482 Bronchospasm Diseases 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007885 bronchoconstriction Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001613 neoplastic effect Effects 0.000 description 1
- 238000002638 palliative care Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000001959 radiotherapy Methods 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
- 208000024363 trachea neoplasm Diseases 0.000 description 1
- 208000006601 tracheal stenosis Diseases 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2002/9534—Instruments specially adapted for placement or removal of stents or stent-grafts for repositioning of stents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The application discloses a tracheal stent shifter which comprises a guide wire, a guide pipe, an inner end, an inner sliding sleeve, an outer end, an outer sliding sleeve, an outer supporting component, an inner supporting component and a limiting component, wherein the guide pipe is sleeved on the guide wire and penetrates through an insertion part of a bronchoscope, the guide wire extends out of the front end of a lens body, the inner end is fixedly arranged at the end part of the guide wire, the inner sliding sleeve is slidably sleeved on the guide wire, the outer end is rotatably arranged at the end part of the inner sliding sleeve, the outer sliding sleeve is sleeved on the inner sliding sleeve, the outer supporting component is connected between the inner sliding sleeve and the inner end through a connecting rod, the inner supporting component is connected between the outer sliding sleeve and the outer end through the connecting rod, the limiting component is sleeved on the guide wire, the limiting component is positioned at one end of the inner sliding sleeve far away from the inner end, and a compressing piece is arranged at the outer side of the inner supporting component and used for compressing a stent on the outer supporting component. The application can accurately restore the shifted bracket to the treatment position and expand the bracket outwards, so that the bracket is more stable.
Description
Technical Field
The application belongs to the field of medical appliances, and particularly relates to a tracheal stent shifter.
Background
As an important non-operative treatment, tracheal stenting is increasingly being used in the clinical treatment of benign and malignant stenotic disorders of the trachea, especially palliative treatment of neoplastic tracheal stenosis. Although the application of the tracheal stent to treat the bronchoconstriction and the tumor of the trachea is a treatment measure with rapid and obvious effect, the application of the tracheal stent to treat the malignant stenosis of the trachea has a certain complication. For example, when the tracheal particle support is used for carrying out accurate radiotherapy on the tracheal cancerous part, before the tracheal particle support is put into, the tracheal particle support is put into the trachea so that the trachea is narrow due to the fact that the tracheal particle support is blocked by the proliferated tumor and the granulation, on the one hand, after the tracheal particle support is put into the trachea, the support can expand the trachea so that the trachea is smooth, on the other hand, tumor cells are killed under the action of radioactive particles, the problem of the trachea is further relieved, however, after the tumor cells are killed, the proliferated tumor is reduced, the original narrow trachea is enlarged, and the support has the memory and can not be automatically expanded, so that the tracheal particle support at the installation position is easy to shift, and especially after the patient has severe cough. The displaced tracheal particle stent can cause damage to normal cells, thus requiring rapid movement of the tracheal particle stent to a designated location once the tracheal particle stent is found to be displaced.
Publication number CN114376775a is a stent remover comprising an operation handle, a guidewire operation portion, a partition catheter, a support catheter, and a stent removal portion; the outer surface of the operating handle is provided with a fixed operating part in a moving way along the axial direction; the guide wire operation part is arranged at the tail end of the operation handle, a guide wire hole for the guide wire to extend in and out is arranged in the guide wire operation part, and the guide wire hole is simultaneously communicated with the separation catheter and the support catheter; the separation catheter is arranged in the guide wire operation part; according to the application, one end of the bracket is approximately wrapped by the bracket taking-out part, so that the bracket is contracted and clamped, and then the bracket is dragged to be taken out, however, in actual operation, on one hand, the shifted bracket needs to be reset and is not required to be taken out unidirectionally, and on the other hand, the bracket needs to be continuously pushed in deeply, and on the other hand, the bracket needs to be further expanded after being restored to a designated position, so that the bracket is positioned at the designated position more stably.
Disclosure of Invention
The application aims at: in order to solve the problem that the tracheal stent cannot be accurately and rapidly reset after being shifted in the prior art, the tracheal stent shifter is provided.
In order to achieve the above purpose, the present application adopts the following technical scheme: the utility model provides a tracheal stent shifter, includes seal wire, pipe, interior end, interior sleeve pipe that shifts, outer end, outer sleeve pipe that slides, outer supporting component, interior supporting component, spacing subassembly, the pipe cover is established on the seal wire, the pipe with the insert portion of bronchoscope is worn to locate by the seal wire, the pipe is located the insert portion of bronchoscope, the seal wire stretches out by the body front end of bronchoscope, interior end is fixed to be set up the seal wire tip, interior sleeve pipe slip cap is established on the seal wire, outer end rotates to set up interior sleeve pipe is close to interior end's tip, outer sleeve pipe that slides is established on the interior sleeve pipe that slides, outer sleeve pipe with connect through the connecting piece between the pipe, outer supporting component with interior sleeve pipe with connect through the connecting rod between the outer end, spacing subassembly cover is established on the seal wire, spacing subassembly is located interior sleeve pipe is close to the interior sleeve pipe is kept away from to the support component in the interior sleeve pipe that shifts, the end is used for compressing tightly the support component is used for compressing tightly one end in the support of the support frame.
As a further description of the above technical solution: the outer support assembly comprises at least three outer support plates which are arranged on the periphery of the inner sliding sleeve at equal intervals, the outer support plates are arranged along the length direction of the inner sliding sleeve, the outer support plates are connected with the inner end through a connecting rod, the outer support plates are connected with the middle of the inner sliding sleeve through a connecting rod, the outer support plates are connected with one end, far away from the inner end, of the inner sliding sleeve through a connecting rod, and the inner sliding sleeve is driven by sliding of the guide wire to expand or contract outwards.
As a further description of the above technical solution: the outer support plates are arranged at equal intervals around the circumference of the inner sliding sleeve.
As a further description of the above technical solution: the inner support assembly comprises at least three inner support plates which are arranged on the circumference side of the outer sliding sleeve at equal intervals, the inner support plates are arranged along the length direction of the guide wire, the inner support plates are positioned between the outer support assembly and the outer sliding sleeve, the inner support plates are connected with the outer ends through one connecting rod, the inner support plates are connected with the two ends of the outer sliding sleeve in the length direction respectively through one connecting rod, the compressing pieces are arranged at equal intervals along the length direction of the inner support plates, the compressing pieces are L-shaped, a notch is formed between the compressing pieces and the inner support plates, the width of the notch is larger than the sum of the thicknesses of the outer support plates and the support frames, and the outer sliding sleeve slides relative to the inner sliding sleeve to drive the inner support plates to expand or contract outwards.
As a further description of the above technical solution: the inner support plates are arranged at equal intervals around the circumference of the outer sliding sleeve.
As a further description of the above technical solution: the limiting component comprises a limiting ring, a clamping ring and an elastic sleeve, wherein the limiting ring is fixed on the guide wire, the clamping ring is arranged on the guide wire in a sliding mode, the elastic sleeve is sleeved on the guide wire, two ends of the elastic sleeve are respectively connected with the clamping ring and the end portion of the inner sliding sleeve, clamping rods are arranged on the clamping ring and are arranged at equal intervals along the circumference of the clamping ring, one end of the clamping rod, which is far away from the clamping ring, is provided with clamping openings, and the clamping openings are matched with the wall thickness of an operation hole in the front end of a lens body.
As a further description of the above technical solution: the connecting piece includes go-between, pull rod, the go-between connect in outer sheathed tube tip that slides, pull rod one end with pipe end fixing, the other end with the end fixing of go-between, the track groove that slides has been seted up to interior sleeve pipe lateral wall, and track groove that slides is divided into outer track groove, the track groove that expands soon, the track groove that contracts, track groove that resets and head and tail intercommunication in proper order, the threaded hole has been seted up on the outer sleeve pipe that slides, threaded hole is provided with the guide pin, guide pin and track groove adaptation that slides.
In summary, the technical scheme has the beneficial effects that.
(1) The tracheal stent shifter disclosed by the application is matched with a bronchoscope, so that the shifted stent can be expanded or contracted outwards, and can be further expanded when moving to a designated position, the stability of the stent at the designated position is ensured, and the stent is prevented from being shifted again.
(2) According to the tracheal stent shifter, the outer support component and the inner support component are expanded outwards or contracted inwards through the insertion and extraction of the guide wire and the guide tube relative to the tracheal stent insertion part, the inner support component can also rotate relative to the outer support component during outer expansion so that the pressing piece can move to the outer side of the stent, the stent can shrink to be smaller through the mutual matching of the pressing piece, the outer support plate and the inner support plate, the movement in a trachea is facilitated, and the damage of the stent to the inner wall of the trachea under the condition of moving the stent directly in the trachea is reduced.
Drawings
FIG. 1 is a schematic view of the present application in use.
Fig. 2 is a schematic structural view of the present application.
Fig. 3 is a schematic view of the contracted state of the outer support assembly according to the present application, omitting the inner support assembly.
Fig. 4 is a schematic structural view of the outer support assembly in the expanded state of the present application, omitting the inner support assembly.
FIG. 5 is a schematic view of the structure of the outer support assembly and the inner support assembly according to the present application.
FIG. 6 is a schematic view of the structure of the guide wire, catheter, inner sliding sleeve and outer sliding sleeve of the present application.
Fig. 7 is an exploded view of a guidewire, catheter, inner sliding sleeve, and outer sliding sleeve of the present application.
Fig. 8 is a schematic diagram of the working state of the present application.
Fig. 9 is a second schematic diagram of the working state of the present application.
Fig. 10 is a schematic view of the structure of the inner support plate and the outer support plate clamping bracket of the present application.
Fig. 11 is a sectional view showing the state of the inner support plate and the outer support plate clamping bracket of the present application.
Legend description: 1. bronchi; 2. a bracket; 3. a bronchoscope; 4. an insertion section; 5. the front end of the mirror body; 6. a guide wire; 7. a conduit; 8. an inner end; 9. sliding the sleeve inside; 10. an outer end; 11. an outer slip sleeve; 12. an outer support plate; 13. an inner support plate; 14. a connecting rod; 15. a pressing member; 16. a limit component; 17. a limiting ring; 18. a clamping ring; 19. a clamping rod; 20. an elastic sleeve; 21. a connecting ring; 22. a pull rod; 23. expanding the track groove; 24. spin-expanding the track groove; 25. a shrink track groove; 26. resetting the track groove; 27. and (5) guiding nails.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-11, the present application provides a technical solution for a tracheal stent shifter.
The utility model provides a trachea support shifter, includes seal wire 6, pipe 7, interior end 8, interior slip sleeve pipe 9, outer end 10, outer slip sleeve pipe 11, outer supporting component, interior supporting component, spacing subassembly 16, and pipe 7 cover is established on seal wire 6, and insert portion 4 of bronchoscope 3 is worn to locate by pipe 7 and seal wire 6, and pipe 7 is located insert portion 4 of bronchoscope 3, and seal wire 6 stretches out by the body front end 5 of bronchoscope 3.
The inner end 8 is fixedly arranged at the end part of the guide wire 6, the inner sliding sleeve 9 is sleeved on the guide wire 6 in a sliding way, the outer support component is connected between the inner sliding sleeve 9 and the inner end 8 through a connecting rod 14, the outer support component comprises at least three outer support plates 12 which are circumferentially equidistant on the inner sliding sleeve 9, in the embodiment, the outer support plates 12 are four, the circumferences of the four outer support plates 12 are equally equidistant, the outer support plates 12 are arranged along the length direction of the inner sliding sleeve 9, one end of each outer support plate 12 is connected with the inner end 8 through a connecting rod 14, and two ends of each connecting rod 14 are respectively rotationally connected with the outer support plates 12 and the inner end 8; the outer support plate 12 is connected with the middle part of the inner sliding sleeve 9 through a connecting rod 14, and two ends of the connecting rod 14 are respectively connected with the outer support plate 12 and the inner sliding sleeve 9 in a rotating way; the end of the outer support plate 12, which is far away from the inner end 8, is connected with the end of the inner sliding sleeve 9, which is far away from the inner end 8, through a connecting rod 14, and the two ends of the connecting rod 14 are respectively connected with the outer support plate 12 and the inner sliding sleeve 9 in a rotating way; the inner sliding sleeve 9 slides along the guide wire 6, so that the outer support plates 12 expand or contract inwards relative to the inner sliding sleeve 9 under the action of the connecting rod 14, and when the inner sliding sleeve 9 slides towards the inner end 8, the four outer support plates 12 expand outwards; when the inner sliding sleeve 9 slides away from the inner end 8, the four outer support plates 12 retract, and when the opposite inner sliding sleeve 9 slides closer to the inner end 8, the four outer support plates 12 expand simultaneously.
The outer end 10 is coaxially arranged at the end part of the inner sliding sleeve 9, which is close to the inner end 8, the outer end 10 can rotate around the axis of the inner sliding sleeve 9, the outer sliding sleeve 11 is sleeved on the inner sliding sleeve 9, the outer sliding sleeve 11 is connected with the guide pipe 7 through a connecting piece, the connecting piece comprises a connecting ring 21 and a pull rod 22, the connecting ring 21 is connected with the end part of the outer sliding sleeve 11, one end of the pull rod 22 is fixed with the end part of the guide pipe 7, and the other end of the pull rod 22 is fixed with the end part of the connecting ring 21. The side wall of the inner sliding sleeve 9 is provided with a sliding track groove which is divided into an outer expansion track groove 23, a rotary expansion track groove 24, a contraction track groove 25 and a reset track groove 26 and communicated end to end in sequence, the outer sliding sleeve 11 is provided with a threaded hole, the threaded hole is internally provided with a guide pin 27, and the guide pin 27 is matched with the sliding track groove; when the outer sliding sleeve 11 slides along the inner sliding sleeve 9 far away from the outer end head 10, the outer end head 10 and the outer sliding sleeve 11 relatively rotate while sliding relative to the inner sliding sleeve 9 when the guide nails 27 slide from the outer expansion track grooves 23 into the rotary expansion track grooves 24.
The inner support assembly is connected between the outer sliding sleeve 11 and the outer end head 10 through a connecting rod 14, the inner support assembly comprises at least three inner support plates 13 with the circumferences being equidistant on the circumference side of the outer sliding sleeve 11, in the embodiment, four inner support plates 13 are arranged, the inner support plates 13 are arranged along the length direction of the guide wire 6, the inner support plates 13 are parallel to the outer support plates 12, the inner support plates 13 are positioned between the outer support plates 12 and the outer sliding sleeve 11, each inner support plate 13 is connected with the outer end head 10 through a connecting rod 14, and two ends of the connecting rod 14 are respectively connected with the inner support plates 13 and the outer end head 10 in a rotating way; the inner support plate 13 is connected with the two ends of the outer sliding sleeve 11 in the length direction through a connecting rod 14, one end of the connecting rod 14 is rotationally connected with the inner support plate 13, and the other end of the connecting rod 14 is rotationally connected with the outer sliding sleeve 11. The outer sliding sleeve 11 slides relative to the inner sliding sleeve 9, and when the outer sliding sleeve 11 slides away from the outer end 10, the inner support plate 13 expands outwards; the inner support plate 13 is retracted as the outer slip sleeve 11 slides closer to the outer tip 10. Simultaneously, under the action of the guide pin 27 and the sliding track groove, the outer sliding sleeve 11 and the outer end 10 can rotate around the inner sliding sleeve 9.
The inner support assembly outside is provided with the clamp 15, and clamp 15 is used for compressing tightly support 2 on outer support assembly, and clamp 15 equidistant setting along inner support plate 13 length direction, clamp 15 be L, forms a breach between clamp 15 and the inner support plate 13, and the breach width is greater than the sum of outer support plate 12 and support 2 thickness. When the connecting piece moves to drive the outer sliding sleeve 11 to slide relative to the inner sliding sleeve 9, the outer expansion and the inner contraction of the inner supporting plate 13 relative to the outer sliding sleeve 11 are realized, meanwhile, under the action of the guide nails 27 and the sliding track grooves, the outer sliding sleeve 11 and the outer end 10 can rotate around the inner sliding sleeve 9 to drive the inner supporting plate 13 to rotate, the compressing piece 15 is positioned on the outer periphery side of the support, and when the inner supporting plate 13 contracts, the compressing piece 15 compresses the support 2 on the periphery side of the outer supporting plate 12.
The limiting component 16 is sleeved on the guide wire 6, the limiting component 16 is located at one end of the inner sliding sleeve 9 far away from the inner end 8, the limiting component 16 is matched with the front end 5 of the lens body of the bronchoscope 3 to limit sliding of the inner sliding sleeve 9, the limiting component 16 comprises a limiting ring 17, a clamping ring 18 and an elastic sleeve 20, the limiting ring 17 is fixed on the guide wire 6, the clamping ring 18 is slidably arranged on the guide wire 6, the elastic sleeve 20 is sleeved on the guide wire 6, two ends of the elastic sleeve 20 are respectively connected with the clamping ring 18 and the end of the inner sliding sleeve 9, clamping rods 19 are arranged on the clamping ring 18 at equal intervals along the circumferential direction of the clamping ring 18, two clamping rods 19 are arranged in the embodiment, the two clamping rods 19 are made of elastic metal, the tip of the V-shaped tip faces the inner sliding sleeve 9, one end of the clamping rod 19 far away from the clamping ring 18 is provided with a clamping gap, and the clamping gap is adaptive to the wall thickness of the operation hole of the front end 5 of the lens body. After the clamping notch of the clamping rod 19 is clamped with the operation hole, the clamping ring 18 cannot move along the insertion part 4 of the bronchoscope 3.
A method of operating a tracheal stent displacer.
Step one: the position of the tracheal stent 2 is determined and the bronchoscope 3 is inserted close to the stent 2.
Step two: the outer support component and the inner support component of the tracheal stent shifter are adjusted to be in a contracted state, the outer support component and the inner support component are dragged through the guide wire 6 and the guide tube 7 to enter the channel of the stent 2 through the working channel of the tracheal lens 3, the guide wire 6 cannot be inserted continuously relative to the tracheal lens 3 under the action of the limiting component 16, then the outer support component is expanded and supports the stent by pulling the guide wire 6, the guide tube 7 is pulled and rotated simultaneously to expand and fix the stent, and finally the guide wire 6 and the guide tube 7 are operated to be inserted slowly along the tracheal lens simultaneously so that the stent 2 is contracted along with the contraction of the outer support component and the inner support component.
Step three: the stent 2 is moved to a specified treatment position by integrally moving the insertion portion 4 of the bronchoscope 3, the guide wire 6, and the catheter 7.
Step four: rotating the guide wire 6 relative to the catheter 7 releases the fixation of the inner support assembly to the stent, and then pulling the guide wire 6 relative to the bronchoscope 3 causes the outer support assembly to expand outward so that the stent 2 expands and abuts against the inside of the bronchus.
Step five: finally, the guide wire is inserted relative to the bronchoscope so that the outer support assembly is minimally contracted, and then the bronchoscope 3 and the tracheal stent displacer are removed.
Working principle: when the tracheal stent shifter is used, two medical staff are required to cooperate, and corresponding operation is required by means of the bronchoscope 3. The position of the tracheal stent 2 is first determined by X-rays, and then one of the medical staff inserts the bronchoscope 3 into the trachea near one end of the displacement stent 2 and keeps the position of the front end 5 of the body of the bronchoscope 3 stationary.
Before the tracheal stent displacer is inserted, the inner support plate 13 and the outer support plate 12 are required to be adjusted so that they are both in a contracted state, so as to be smoothly inserted into the bronchoscope 3. I.e. initial state of the tracheal stent displacer: the outer sliding sleeve 11 slides to the minimum distance from the outer end 10, at this time, the guide pin 27 is positioned at the joint of the reset track groove 26 and the expanding track groove 23, and the inner support plate 12 is contracted to the minimum state; the inner sliding sleeve 9 slides to the furthest distance from the inner tip 8, the outer support plate 12 being in a minimum contracted state, defining the relative position of the catheter 7 and the guide wire 6, such that the guide wire 6 and the catheter 7 cannot slide relative to each other.
In the initial state of the tracheal stent shifter, the tracheal stent shifter is inserted into the insertion part 4 of the bronchoscope 3 through the working channel of the bronchoscope 3, when the guide wire 6 extends out of the operation hole of the front end 5 of the lens body of the bronchoscope 3, the guide wire 6 is continuously and slowly inserted, the positions of the inner support plate 13 and the outer support plate 12 can be observed through the images of the bronchoscope 3, the inner support plate 13 and the outer support plate 12 are driven by the end part of the guide wire 6 to enter the channel of the stent 2, as shown in fig. 8 and 9, when the inner support plate 13 and the outer support plate 12 completely enter the inner peripheral side of the stent 2, the two clamping rods 19 of the limiting assembly 16 are clamped in the operation hole of the front end 5 of the lens body, the guide wire 6 is continuously inserted at the moment, the limiting ring 17 on the guide wire 6 is abutted with the clamping ring 18, the guide wire 6 cannot be continuously inserted, the elastic sleeve 20 is in the stretched state at the moment, the inner sliding sleeve 9 is kept at the farthest distance from the inner end 8 under the action of the elastic sleeve 20, and the outer support plate 12 is in the minimum contracted state. Then, the positions of the inner support plate 13 and the outer support plate 12 are observed through the images of the bronchoscope 3, and fine adjustment is performed through the bronchoscope 3 so that the bracket 2 is completely sleeved on the outer periphery side of the outer support plate 12.
Subsequent operations are performed to effect support, retraction and movement of the stent 2 to the designated position.
Firstly, medical staff needs to stably control the bronchoscope 3, so that the insertion part 4 and the front end 5 of the bronchoscope are stable in the trachea and do not move, and then the outer support plate 12 is expanded by pulling the guide wire 6, and the specific process is as follows: pulling the guide wire 6 makes the fixed one end that is provided with interior end 8 on the guide wire 6 move towards the mirror body front end 5, because screens ring 18 is spacing unable removal with the mirror body front end 5 of bronchoscope 3 under the effect of screens pole 19, guide wire 6 drives interior sliding sleeve 9 and interior end 8 removal when pulling the guide wire 6, when interior sliding sleeve 9 keep away from interior end 8's one end butt in screens ring 18, continue pulling guide wire 6 and make, interior sliding sleeve 9 moves towards interior end 8 relative guide wire 6 for outer backup pad 12 expands and supports support 2 from the inboard of support 2, then fixed guide wire 6 makes it not follow the working channel of bronchoscope 3. In the process, the guide pipe 7 is pulled and rotated simultaneously, so that the outer sliding sleeve 11 also slides away from the inner end head relative to the inner sliding sleeve 9, so that the inner supporting plate 13 is also expanded outwards, and when the guide pipe 7 is pulled and rotated, the guide nails 27 of the outer sliding sleeve 11 move to the rotary expansion track grooves 24 along the rotary expansion track grooves 23 until reaching the connection position of the rotary expansion track grooves 24 and the contraction track grooves 25, at the moment, the inner supporting plate 13 expands outwards to the maximum state and rotates to the opening of the support 2, the outer supporting plate 12 between the inner supporting plate 13 and the pressing piece 15.
The result of the above process is not achieved by one operation, and if the support frame 2, the outer support plate 12 are not located in the gap between the inner support plate 13 and the pressing member 15, the medical staff is required to repeatedly operate. Namely, when the inner support plate 13 expands outwards to the maximum state, the pressing piece 15 is positioned on the inner peripheral side of the outer support plate 12, at the moment, the guide pipe 7 needs to be pushed but the guide pipe 7 is not rotated, namely, the outer sliding sleeve 11 is driven to slide towards the outer end head 10 so as to shrink the inner support plate 13, in the process, the guide nail 27 slides to the position of the reset track groove 26 along the shrink track groove 25, the inner support plate 13 shrinks to the minimum state, then the guide pipe 7 is rotated, the outer sliding sleeve 11 drives the inner support plate 13 to rotate relative to the inner sliding sleeve under the action of the connecting ring 21 and the pull rod 22, and at the moment, the guide nail 27 moves into the outer expanding track groove 23 along the reset track groove 26; the above-described operation of expanding the inner support plate 13 is then repeated so that the inner support plate 13 expands outwardly to the maximum state and rotates until the bracket 2, the outer support plate 12, are positioned in the gap between the inner support plate 13 and the pressing member 15.
Then the operation guide wire 6 and the catheter 7 are slowly inserted at the same time, at this time, because the outer sliding sleeve 11 does not slide relatively with the inner sliding sleeve 9, the inner supporting plate 13 and the outer supporting plate 12 do not shrink until the inner sliding sleeve 9 is far away from the clamping ring 18, at this time, the elastic sleeve 20 is not stretched, then the guide wire 6 is kept fixed, then the catheter 7 is pushed to drive the outer sliding sleeve 11 to slide along the inner sliding sleeve 9, at this time, the guide pin 27 slides along the shrinkage track groove 25, so that the inner supporting plate 13 shrinks, simultaneously drives the outer supporting plate 12 and the stent 2 to shrink inwards, simultaneously one end of the inner sliding sleeve 9 far away from the inner end 8 moves towards the clamping ring 18, after shrinking to a certain extent, the pushing of the catheter 7 is stopped, then the bronchoscope 3 and the guide wire 6 and the catheter 7 are simultaneously moved, after the stent 2 is moved to a specified position, the operation bronchoscope 3 is kept in a fixed state, then the guide wire 6 is rotated, under the action of the torsion of the guide wire 6, the outer sliding sleeve 11 rotates relatively to the guide wire 6 and the inner sliding sleeve 9, the guide pin 27 rotates along the reset track groove 26, the initial position is restored, then the guide wire 12 is enabled to expand the outer supporting plate 2 and the stent 2 can expand firmly at the same time.
Then slowly insert the seal wire 6 and make the elastic sleeve 20 be in tensile state, make the interior slip sleeve 9 remove relatively seal wire 6 and keep away from interior end 8 under the effect of elastic sleeve 20 simultaneously for outer backup pad 12 contracts under the effect of connecting rod 14 until minimum state, finally take out bronchoscope 3 and pipe 7, seal wire 6 from the trachea simultaneously, accomplish the aversion of support 2, and make support 2 more firm in the home position.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and those skilled in the art should appreciate that the technical scheme and the inventive concept according to the present application are equivalent or changed within the scope of the present application.
Claims (5)
1. A tracheal stent shifter, characterized in that: comprises a guide wire (6), a catheter (7), an inner end head (8), an inner sliding sleeve (9), an outer end head (10), an outer sliding sleeve (11), an outer supporting component, an inner supporting component and a limiting component (16), wherein the catheter (7) is sleeved on the guide wire (6), the catheter (7) and the guide wire (6) penetrate through an inserting part (4) of the bronchoscope (3), the catheter (7) is positioned in the inserting part (4) of the bronchoscope (3), the guide wire (6) extends out from the front end (5) of the lens body of the bronchoscope (3), the inner end head (8) is fixedly arranged at the end part of the guide wire (6), the inner sliding sleeve (9) is sleeved on the guide wire (6) in a sliding manner, the outer end head (10) is rotatably arranged at the end part of the inner sliding sleeve (9) close to the inner end head (8), the outer sliding sleeve (11) is sleeved on the inner sliding sleeve (9), the inner sliding sleeve (7) and the inner end (9) is connected with the limiting component (16) through the inner sliding sleeve (6), the limiting component (16) is matched with the front end (5) of the lens body of the bronchoscope (3) and used for limiting the sliding of the inner sliding sleeve (9), a pressing piece (15) is arranged on the outer side of the inner supporting component, and the pressing piece (15) is used for pressing the bracket (2) on the outer supporting component;
the outer support assembly comprises at least three outer support plates (12) which are circumferentially and equidistantly arranged on the periphery of the inner sliding sleeve (9), the outer support plates (12) are arranged along the length direction of the inner sliding sleeve (9), the outer support plates (12) are connected with the inner end (8) through a connecting rod (14), the outer support plates (12) are connected with the middle part of the inner sliding sleeve (9) through a connecting rod (14), the outer support plates (12) are connected with one end, far away from the inner end (8), of the inner sliding sleeve (9) through a connecting rod (14), and the inner sliding sleeve (9) slides along the guide wire (6) to drive the outer support plates (12) to expand or contract outwards;
the inner support assembly comprises at least three inner support plates (13) which are arranged on the periphery of the outer sliding sleeve (11) at equal intervals, the inner support plates (13) are arranged along the length direction of the guide wire (6), the inner support plates (13) are arranged between the outer support assembly and the outer sliding sleeve (11), the inner support plates (13) are connected with the outer end (10) through a connecting rod (14), the inner support plates (13) are connected with the two ends of the outer sliding sleeve (11) in the length direction through connecting rods (14), the pressing pieces (15) are arranged at equal intervals along the length direction of the inner support plates (13), the pressing pieces (15) are L-shaped, an opening is formed between the pressing pieces (15) and the inner support plates (13), the width of the opening is larger than the sum of the thickness of the outer support assembly and the bracket (2), and the outer sleeve (11) slides relatively to drive the inner support plates (13) to expand or contract inwards.
2. A tracheal stent displacer as in claim 1, wherein: the outer support plates (12) are arranged at equal intervals around the circumference of the inner sliding sleeve (9).
3. A tracheal stent displacer as in claim 1, wherein: the inner support plates (13) are arranged at equal intervals around the circumference of the outer sliding sleeve (11).
4. A tracheal stent displacer as in claim 1, wherein: limiting component (16) are including spacing ring (17), screens ring (18), elastic sleeve (20), spacing ring (17) are fixed on seal wire (6), screens ring (18) slip sets up on seal wire (6), elastic sleeve (20) cover is established on seal wire (6), elastic sleeve (20) both ends respectively with screens ring (18) with interior slip sleeve pipe (9) end connection, be provided with screens pole (19) on screens ring (18), a plurality of screens pole (19) are followed screens ring (18) circumference equidistant setting, screens opening has been seted up to one end that screens pole (19) were kept away from screens ring (18), the wall thickness adaptation of screens opening and the operation hole of mirror body front end (5).
5. A tracheal stent displacer as in claim 1, wherein: the connecting piece comprises a connecting ring (21) and a pull rod (22), wherein the connecting ring (21) is connected to the end part of the outer sliding sleeve (11), one end of the pull rod (22) is fixed to the end part of the guide pipe (7), the other end of the pull rod is fixed to the end part of the connecting ring (21), a sliding track groove is formed in the side wall of the inner sliding sleeve (9), the sliding track groove consists of an outer expansion track groove (23), a rotation expansion track groove (24), a contraction track groove (25) and a reset track groove (26) and is communicated end to end in sequence, a threaded hole is formed in the outer sliding sleeve (11), a guide pin (27) is arranged in the threaded hole, and the guide pin (27) is matched with the sliding track groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310905727.3A CN116616972B (en) | 2023-07-24 | 2023-07-24 | Tracheal stent shifter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310905727.3A CN116616972B (en) | 2023-07-24 | 2023-07-24 | Tracheal stent shifter |
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| CN116616972B true CN116616972B (en) | 2023-10-24 |
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| CN116616972A (en) | 2023-08-22 |
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