CN109498212B - Tectorial membrane support struts ware - Google Patents
Tectorial membrane support struts ware Download PDFInfo
- Publication number
- CN109498212B CN109498212B CN201811470621.0A CN201811470621A CN109498212B CN 109498212 B CN109498212 B CN 109498212B CN 201811470621 A CN201811470621 A CN 201811470621A CN 109498212 B CN109498212 B CN 109498212B
- Authority
- CN
- China
- Prior art keywords
- rod
- movable
- expansion
- movable middle
- adjusting nut
- 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
- 210000002489 tectorial membrane Anatomy 0.000 title claims abstract description 7
- 230000017531 blood circulation Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 210000000709 aorta Anatomy 0.000 description 4
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 4
- 210000001715 carotid artery Anatomy 0.000 description 4
- 210000002376 aorta thoracic Anatomy 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 208000002251 Dissecting Aneurysm Diseases 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 206010002895 aortic dissection Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 210000002168 brachiocephalic trunk Anatomy 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000302 ischemic effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
- A61M1/3655—Arterio-venous shunts or fistulae
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Transplantation (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Prostheses (AREA)
Abstract
The invention relates to the technical field of tectorial membrane stents, in particular to a tectorial membrane stent spreader, which comprises a core rod, wherein a first external thread is arranged on the outer wall of one end of the core rod, a middle rod advancing and retreating adjusting nut is arranged on the core rod near the first external thread, a movable middle rod is sleeved on the middle part of the core rod, a second external thread is arranged on the outer wall of the middle part of the movable middle rod, an outer rod advancing and retreating adjusting nut is arranged on the middle part of the movable middle rod near the second external thread, a movable outer rod is sleeved on the middle part of the movable middle rod, a plurality of first expansion frameworks are arranged on the outer wall of the bottom of the movable middle rod, and a plurality of second expansion frameworks are arranged on the outer wall of the bottom of the core rod.
Description
Technical Field
The invention relates to the technical field of covered stent, in particular to a covered stent spreader.
Background
The prior part of A-shaped aortic dissection can not be subjected to the chest opening extracorporeal circulation, namely the giant wound operation, and can also be used for plugging the rupture of the dissection through the support for the intracavity minimally invasive treatment. The three branches on the aortic arch are covered by the intracavity covered stent, the proximal end of the covered stent is positioned on the ascending aorta, the distal end of the covered stent is positioned on the descending aorta, then the covered stent is reversely penetrated by the three branches to open a blood vessel, cerebral blood supply is completely blocked in the process of penetrating the covered stent, a diversion sheath is required to be placed between the wall of the ascending aorta and the covered stent of the ascending aorta for supplying blood to the brain, blood flow is guided to the carotid artery, the covered stent is cylindrical as a whole and consists of a metal framework and an externally covered thin blood vessel. The metal skeleton is mostly made of memory alloy. The thin blood vessel is made of terylene or polytetrafluoroethylene. Blood can only flow through the inside of the stent graft.
The stent graft covers all three of the arch from the ascending aorta to the aortic arch, where the bilateral carotid arteries are completely covered and the bilateral brain is in ischemic condition, which is not allowed to occur, thus requiring blood flow. In the current operation, a 20F (4 mm) thick sheath is commonly used for insertion from the right carotid artery, and the current transfer sheath may have insufficient blood flow due to the diameter limitation, so we propose a covered stent spreader.
Disclosure of Invention
The invention aims to provide a stent graft spreader, which aims to solve the problems of insufficient blood flow and the like caused by the limitation of the diameter of a transfer sheath when the stent graft provided in the background art is used.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a tectorial membrane support struts ware, includes the core bar, the one end outer wall of core bar is provided with first external screw thread, be close to first external screw thread department on the core bar and be provided with middle pole advance and retreat adjusting nut, the middle part cover of core bar is equipped with movable middle pole, the middle part outer wall of movable middle pole is provided with the second external screw thread, be close to second external screw thread department on the movable middle pole and be provided with outer pole advance and retreat adjusting nut, the middle part cover of movable middle pole is equipped with movable outer pole, the bottom outer wall of movable middle pole is provided with a plurality of first inflation skeleton, the bottom outer wall of core bar is provided with a plurality of second inflation skeleton, the one end of first inflation skeleton is connected with the bottom of movable outer pole, the other end of first inflation skeleton is connected with the bottom of movable middle pole, the one end of second inflation skeleton is connected with the bottom of core bar.
Preferably, the length of the core rod is greater than the length of the movable middle rod.
Preferably, the middle rod advance and retreat adjusting nut is in threaded connection with the core rod.
Preferably, the movable middle rod is in sliding connection with the core rod, and the movable outer rod is in sliding connection with the movable middle rod.
Preferably, the outer rod advancing and retreating adjusting nut is in threaded connection with the movable middle rod.
Preferably, a plurality of radial grooves are formed in the positions, close to the first expansion framework, of one ends of the movable outer rod and the movable middle rod, a limiting block is tightly welded to the positions, close to the radial grooves, of the outer surface of the movable middle rod, and the limiting block is in sliding connection with the radial grooves.
Preferably, a plurality of annular grooves are further formed in the positions, close to the first expansion framework, of one ends of the movable outer rods and the movable middle rods, annular wires are embedded in the annular grooves, the annular wires are tightly welded with one end of the first expansion framework, one end of the second expansion framework is tightly welded with the annular wires at one end of the movable middle rods, and the other end of the second expansion framework is tightly welded with one end of the core rod.
Compared with the prior art, the invention has the beneficial effects that: the invention has simple structure and convenient use, the first expansion framework and the second expansion framework can be well expanded through the middle rod advancing and retreating adjusting nut and the outer rod advancing and retreating adjusting nut which are arranged in the middle rod advancing and retreating adjusting nut, so as to expand the covered stent, blood can leak between the aortic wall and the covered stent to reach the innominate artery, and then the blood can be transferred from the artificial vascular bypass to the left carotid artery, so that the blood flow is led into the original blood vessel, the insufficient blood flow is avoided, and the invention has great practical value and is convenient to popularize.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of an explosive structure according to the present invention;
FIG. 3 is a schematic representation of the use of the present invention;
FIG. 4 is a schematic plan view of the present invention;
Fig. 5 is an enlarged view of a portion of fig. 4 a in accordance with the present invention.
In the figure: 1. a core bar; 11. a first external thread; 2. a middle rod advancing and retreating adjusting nut; 3. a movable middle rod; 31. a second external thread; 32. a limiting block; 4. an outer rod advancing and retreating adjusting nut; 5. a movable outer rod; 51. a radial groove; 52. an annular groove; 521. an endless wire; 6. a first expansion shell; 7. and a second expansion framework.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a number" is two or more, unless explicitly defined otherwise.
Example 1
The utility model provides a tectorial membrane support struts ware, including core bar 1, as shown in fig. 1, fig. 2, the one end outer wall of core bar 1 is provided with first external screw thread 11, be close to first external screw thread 11 department on core bar 1 and be provided with middle pole advance and retreat adjusting nut 2, middle pole advance and retreat adjusting nut 2 and core bar 1 threaded connection, the middle part cover of core bar 1 is equipped with movable middle pole 3, the length of core bar 1 is greater than the length of movable middle pole 3, movable middle pole 3 and core bar 1 sliding connection, the middle part outer wall of movable middle pole 3 is provided with second external screw thread 31, be close to second external screw thread 31 department on the movable middle pole 3 and be provided with outer pole advance and retreat adjusting nut 4, outer pole advance and retreat adjusting nut 4 and movable middle pole 3 threaded connection, the middle part cover of movable middle pole 3 is equipped with movable outer pole 5, movable outer pole 5 and movable middle pole 3 sliding connection, the bottom outer wall of movable middle pole 3 is provided with a plurality of first expansion skeleton 6, the bottom outer wall of core bar 1 is provided with a plurality of second expansion skeleton 7, the one end of first expansion skeleton 6 and the bottom of movable outer pole 5 are connected, the bottom of first expansion skeleton 6 and the bottom of movable middle pole 3 and the bottom of the movable middle pole 7 and the movable middle pole 7 are connected.
Specifically, the first expansion framework 6 and the second expansion framework 7 are made of stainless steel materials, have good air, steam, water and other weak corrosion resistance, and can be bent through movement of the movable outer rod 5 and the movable middle rod 3, so that the covered stent is ensured to be opened.
When the stent graft spreader in the embodiment is used, when the foremost second expansion framework 7 needs to be spread, the core bar 1 is held without being put, the middle bar advancing and retreating adjusting nut 2 at the rear part of the movable middle bar 3 is rotated clockwise, so that the movable middle bar 3 is pushed forward by the stent graft spreader, and the second expansion framework 7 at one end is spread;
When the first expansion framework 6 is required to be expanded, the movable middle rod 3 is held and not put, the outer rod advancing and retreating adjusting nut 4 at the rear part of the movable outer rod 5 is rotated clockwise, so that the movable outer rod 5 is pushed forward, the first expansion framework 6 is expanded, the two frameworks are both expanded to be bent, and the covered stent can be pushed away, so that the function of increasing blood flow can be achieved, and the device is a schematic diagram when the covered stent is expanded as shown in fig. 3.
The middle part of the core bar 1 is a hollow structure, the inside of the core bar can pass through a guide wire with the diameter of 0.035 inch, the keel is a metal wire, and the movable middle bar and the movable outer bar are made of materials with certain toughness, such as PVC, medical plastic and the like.
The movable outer rod 5 is integrally 1 m-1.5 m long.
Example 2
In a specific use process, the movable outer rod 5 and the movable middle rod 3 are easy to rotate during sliding, so that the first expansion framework 6 and the second expansion framework 77 are twisted, breakage and damage are easy to occur during long-time use, therefore, improvement is made on the basis of the embodiment 1, as shown in fig. 4 and 5, a plurality of radial grooves 51 are formed in the positions, close to the first expansion framework 6, of one ends of the movable outer rod 5 and the movable middle rod 3, a limiting block 32 is tightly welded to the positions, close to the radial grooves 51, of the outer surface of the movable middle rod 3, the limiting block 32 is in sliding connection with the radial grooves 51, a plurality of annular grooves 52 are formed in the positions, close to the first expansion framework 6, of one ends of the movable outer rod 5 and the movable middle rod 3, annular wires 521 are embedded in the annular grooves 52, the annular wires 521 are tightly welded to one ends of the first expansion framework 6, one ends of the second expansion frameworks 7 are tightly welded to the annular wires 521 at one ends of the movable middle rod 3, and the other ends of the second expansion frameworks 7 are tightly welded to one ends of the core rods 1.
In this embodiment, through the slip of stopper 32 and radial groove 51, be difficult for producing the rotation when can making activity outer pole 5 and activity middle rod 3 slip, avoid causing the distortion of first inflation skeleton 6 and second inflation skeleton 7 when long-term use, can make things convenient for the installation and the dismantlement of first inflation skeleton 6 and second inflation skeleton 7 through inlaying annular wire 521 and establish in annular groove 52, be convenient for carry out maintenance operation.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A tectorial membrane support struts ware which characterized in that: the novel high-strength steel wire rod comprises a core rod (1), a middle rod advancing and retreating adjusting nut (2), a movable middle rod (3), an outer rod advancing and retreating adjusting nut (4) and a movable outer rod (5), wherein a first outer thread (11) is arranged on the outer wall of one end of the core rod (1), the middle rod advancing and retreating adjusting nut (2) is arranged at the position, close to the first outer thread (11), of the core rod (1), the movable middle rod (3) is sleeved with the middle rod (3), a second outer thread (31) is arranged on the outer wall of the middle of the movable middle rod (3), the outer rod (4) is arranged at the position, close to the second outer thread (31), of the movable middle rod (3), the movable outer rod (5) is sleeved on the middle of the movable middle rod, a plurality of first expansion frameworks (6) are arranged on the outer wall of the bottom of the movable middle rod (3), a plurality of second expansion frameworks (7) are arranged on the outer wall of the bottom of the core rod (1), one end of each first expansion frameworks (6) is connected with the bottom ends of the movable outer rod (5), the bottom ends of the first expansion frameworks (6) are connected with the bottom ends of the movable outer rods (7) and the movable middle rods (7), and the bottom ends of the movable middle rods (3) are connected with the movable middle frameworks (7); the length of the core bar (1) is longer than that of the movable middle bar (3); the middle rod advancing and retreating adjusting nut (2) is in threaded connection with the core rod (1); the movable middle rod (3) is in sliding connection with the core rod (1), and the movable outer rod (5) is in sliding connection with the movable middle rod (3); the outer rod advancing and retreating adjusting nut (4) is in threaded connection with the movable middle rod (3); a plurality of radial grooves (51) are formed in the position, close to the first expansion framework (6), of one end of the movable outer rod (5), limiting blocks (32) are tightly welded to the position, close to the radial grooves (51), of the outer surface of the movable middle rod (3), and the limiting blocks (32) are in sliding connection with the radial grooves (51); a plurality of annular grooves (52) are further formed in the position, close to the first expansion framework (6), of one end of the movable outer rod (5), annular wires (521) are embedded in the annular grooves (52), the annular wires (521) are tightly welded with one end of the first expansion framework (6), one end of the second expansion framework (7) is tightly welded with the annular wires (521) at one end of the movable middle rod (3), and the other end of the second expansion framework (7) is tightly welded with one end of the core rod (1); when the forefront second expansion framework (7) needs to be expanded, the core bar (1) is held and not put, and the middle bar advancing and retreating adjusting nut (2) at the rear part of the movable middle bar (3) is rotated clockwise to push the movable middle bar (3) forward, so that the second expansion framework (7) at one end is expanded; when the first expansion framework (6) is required to be expanded, the movable middle rod (3) is held and not put, the outer rod at the rear part of the movable outer rod (5) is rotated clockwise to advance and retreat the adjusting nut (4), so that the movable outer rod (5) is pushed forward, the first expansion framework (6) is expanded, and the two frameworks can be pushed away when being bent by being expanded, so that the function of increasing blood flow can be achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470621.0A CN109498212B (en) | 2018-12-04 | 2018-12-04 | Tectorial membrane support struts ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470621.0A CN109498212B (en) | 2018-12-04 | 2018-12-04 | Tectorial membrane support struts ware |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109498212A CN109498212A (en) | 2019-03-22 |
| CN109498212B true CN109498212B (en) | 2024-05-31 |
Family
ID=65750208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811470621.0A Active CN109498212B (en) | 2018-12-04 | 2018-12-04 | Tectorial membrane support struts ware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109498212B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297514B (en) * | 2020-03-19 | 2023-06-02 | 南京普微森医疗科技有限公司 | Intracranial tectorial membrane support structure for neurosurgery |
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| CN209377808U (en) * | 2018-12-04 | 2019-09-13 | 无锡市人民医院 | A kind of overlay film frame dilator |
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| WO2002015824A2 (en) * | 2000-08-25 | 2002-02-28 | Kensey Nash Corporation | Covered stents, systems for deploying covered stents |
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2018
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| GB1255330A (en) * | 1968-12-27 | 1971-12-01 | Baxter Laboratories Inc | Biopsy instrument |
| CN101053519A (en) * | 2006-04-13 | 2007-10-17 | 阿塔普拉斯特股份公司 | Lancet device for puncturing the skin |
| CN201022735Y (en) * | 2007-04-17 | 2008-02-20 | 夏亭 | Balloon urinary cast type bladder puncture needle |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109498212A (en) | 2019-03-22 |
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