CN112603594A - Blood vessel covered stent, blood vessel covered stent component and blood vessel covered stent binding method - Google Patents
Blood vessel covered stent, blood vessel covered stent component and blood vessel covered stent binding method Download PDFInfo
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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
- A61F2/02—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
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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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/856—Single tubular stent with a side portal passage
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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
Abstract
The invention discloses a blood vessel covered stent, a blood vessel covered stent component and a blood vessel covered stent binding method, the blood vessel covered stent comprises three modules of a main blood vessel stent, a first branch blood vessel stent and a second branch blood vessel stent, one end of the first branch blood vessel stent covered stent and one end of the second blood vessel stent covered stent are sealed and sewed with the main blood vessel stent covered stent into a whole, blood leakage at the sewed part can not occur, stent disintegration and internal leakage can not occur among stent modules, and the service life is long; a non-Z-shaped framework supporting section and a non-framework soft section are arranged between the lower end of the first branch vascular stent coating, the lower end of the second branch vascular stent coating and the main vascular stent coating, so that the flexibility of the first branch vascular stent and the second branch vascular stent is improved, and the slight variation of the position of a branch artery on an aortic arch is adapted; the multi-group rope sling arranged outside the main blood vessel support film can bind the main blood vessel support, so that the blood vessel support can be sent into the blood vessel with a very small size, and the blood vessel support is more convenient to place into the blood vessel.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a blood vessel covered stent, a blood vessel covered stent component and a blood vessel covered stent binding method.
Background
Thoracic aortic dissection or thoracic aortic aneurysm are the most common aortic disorders with higher mortality rates upon rupture. Surgical operation and thoracic aorta intracavity repair are common operation modes for treating thoracic aorta diseases, wherein the thoracic aorta intracavity repair adopts the related technology of interventional therapy to place a covered stent into an aorta lumen and seal an aortic dissection and/or an aneurysm break.
The thoracic aorta endoluminal repair has the advantages of small wound, good curative effect, quick recovery and the like, however, when thoracic aorta diseases are affected to ascending aorta and aortic arch, the traditional straight-tube type covered stent adopted by the thoracic aorta endoluminal repair can not keep the blood supply of important branch arteries of the aortic arch while covering the thoracic aorta diseases. Conventional surgery is still the primary method of treating aortic disease at this site. But the traditional surgical operation has higher complication incidence and mortality rate.
The branch covered stent technology is developed on the basis of the traditional straight cylinder covered stent. The branch covered stent has the structural characteristics similar to the anatomical structure of the aortic arch. Under the guidance of medical imaging equipment, the special branch covered stent is placed in the aortic arch, so that the blood flow of the branch artery of the aortic arch can be reserved while the aortic dissection or the aneurysm laceration is covered. The thoracic aorta endoluminal repair with the branch covered stent has the characteristics of minimal invasion, quick recovery and good effect, and is the development trend of future medicine.
The existing branch covered stent applied to clinic is mainly a modular branch stent with relatively simple release process, the modular branch stent is composed of a plurality of independent modules, and the modules are assembled together in the aortic arch to realize reconstruction of the aortic arch in the operation process, so that the modular branch stent has the advantage of relatively simple operation process, but has higher risk of long-term occurrence of internal leakage and intermodule disintegration; therefore, a new integrated vascular stent graft with less risk of disassembly and a vascular stent graft assembly which is beneficial to surgical operation are needed.
Disclosure of Invention
The invention aims to provide a blood vessel covered stent, a blood vessel covered stent component and a blood vessel covered stent binding method, which aim to solve the problem that the existing blood vessel covered stent can not restore the aortic arch part and can not keep the blood flow of the branch artery on the aortic arch when an aortic dissection or aneurysm is accumulated in the ascending aorta, the aortic arch and the branch blood vessel thereof in the prior art.
To solve the above technical problem, a first aspect of the present invention is:
designing a blood vessel covered stent, which comprises a main blood vessel stent, a first branch blood vessel stent and a second branch blood vessel stent, wherein the main blood vessel stent, the first branch blood vessel stent and the second branch blood vessel stent respectively comprise a cylindrical blood vessel stent membrane which is impermeable to blood, and one end of the blood vessel stent membrane of the first branch blood vessel stent and one end of the blood vessel stent membrane of the second branch blood vessel stent are hermetically communicated with the side surface of the blood vessel stent membrane of the main blood vessel stent; the blood vessel stent comprises a main blood vessel stent, a first branch blood vessel stent and a second branch blood vessel stent, wherein Z-shaped skeletons are arranged inside blood vessel stent membranes of the main blood vessel stent, the first branch blood vessel stent and the second branch blood vessel stent, and the width of the Z-shaped skeletons on the main blood vessel stent is gradually reduced from the emitting side of the branch blood vessel stent on the main blood vessel stent to the opposite side of the branch blood vessel stent.
Preferably, the blood vessel stent also comprises a third branch blood vessel stent, the third branch blood vessel stent also comprises a cylindrical blood vessel stent membrane which is impermeable to blood and an internal Z-shaped framework, and one end of the blood vessel stent membrane of the third branch blood vessel stent is hermetically communicated with the side surface of the blood vessel stent membrane of the main blood vessel stent.
Preferably, one end of the blood vessel stent membrane of the first branch blood vessel stent, which is close to the main blood vessel stent, is provided with a soft area, and the soft area is a support section without a Z-shaped framework.
Preferably, a plurality of groups of binding rope loop pairs are arranged at intervals outside the main blood vessel support, each binding rope loop pair comprises a first rope loop and a second rope loop, and one end of each of the first rope loop and the second rope loop is connected to the main blood vessel support.
Preferably, the front end of the Z-shaped framework at the most front part in the main vessel stent is provided with an exposed section, and the diameter of the main vessel stent is gradually reduced from front to back.
Preferably, the blood vessel stent membranes of the main blood vessel stent, the first branch blood vessel stent and the second blood vessel stent are made of medical polyester fabric or expanded polytetrafluoroethylene, holes matched with one ends of the first branch blood vessel stent and the second blood vessel stent are reserved on the side surface of the blood vessel stent membrane of the main blood vessel stent, and the end parts of the blood vessel stent membranes of the first branch blood vessel stent and the second blood vessel stent are sewn around the holes on the side surface of the main blood vessel stent.
The second aspect of the present invention is:
a blood vessel covered stent assembly is designed, which comprises the blood vessel covered stent of the first aspect of the invention, and further comprises a first guide wire and a second guide wire, wherein the first guide wire and the second guide wire respectively comprise a bridging guide wire section and a safety guide wire section, the first guide wire and the second guide wire are respectively and correspondingly provided with a guide sleeve positioned between the bridging guide wire section and the safety guide wire section, and the guide sleeves are flexible and used for being loaded into the compressed first branch blood vessel stent or the compressed second branch blood vessel stent.
Preferably, the first guide wire is a whole guide wire, a positioning block is arranged on the first guide wire, the bridge guide wire section and the safety guide wire section are respectively arranged at the front part and the rear part of the first guide wire positioned at the positioning block, the guide sleeve penetrates through the first guide wire, and one end of the guide sleeve is fixed on the positioning block; or the bridging guide wire section and the safety guide wire section of the first guide wire are the front part and the rear part of the first guide wire;
the second guide wire is the same in structure as the first guide wire.
Preferably, a plurality of groups of binding rope sleeve pairs are arranged at intervals outside the main vascular stent, each binding rope sleeve pair comprises a first rope sleeve and a second rope sleeve, one end of each of the first rope sleeve and the second rope sleeve is connected to the main vascular stent, the vascular stent membrane assembly further comprises a binding release guide wire used for tightening the binding rope sleeve pairs, and the first guide wire, the second guide wire and the binding release guide wire are all steel wires.
The third aspect of the present invention is:
a binding (storing) method of a blood vessel covered stent is designed, the blood vessel covered stent assembly adopting the second aspect of the invention comprises the following steps:
(1) the first guide wire, the second guide wire and the binding release guide wire are all arranged in the blood vessel covered stent pusher in a penetrating way;
(2) binding the main vessel stent: a plurality of groups of binding rope sleeve pairs are arranged at intervals outside the main vascular stent, each binding rope sleeve pair comprises a first rope sleeve and a second rope sleeve, one end of each of the first rope sleeve and the second rope sleeve is connected to one side of the main vascular stent, the first rope sleeve bypasses one side of the main vascular stent, the second rope sleeve bypasses the other side of the main vascular stent and correspondingly penetrates through the first rope sleeve, the main vascular stent is compressed, and the binding release guide wire penetrates through the free end of the second rope sleeve, so that the first rope sleeve and the second rope sleeve bind the compressed main vascular stent;
(3) binding the branch vessel stent: threading the first guidewire into the first branched vascular stent and the first branched vascular stent being compression fit into a guide sleeve on the first guidewire, threading the second guidewire into the second branched vascular stent and the second branched vascular stent being compression fit into a guide sleeve on the second guidewire;
(4) and inserting the bundled main vessel stent, the first branch vessel stent and the second branch vessel stent into a vascular graft stent pusher.
The invention has the main beneficial technical effects that:
1. the blood vessel covered stent provided by the invention comprises three modules, namely a main blood vessel stent, a first branch blood vessel stent and a second branch blood vessel stent, wherein one ends of the first branch blood vessel stent covered membrane and the second branch blood vessel stent covered membrane are hermetically sewn with the main blood vessel stent covered membrane into a whole, blood leakage at the sewn part can be avoided, stent disintegration and internal leakage among stent modules can be avoided, and the service life is long.
2. A non-Z-shaped framework supporting section and a non-framework soft section are arranged between the lower end of the first branch vascular stent coating, the lower end of the second branch vascular stent coating and the main vascular stent coating, so that the flexibility of the first branch vascular stent and the second branch vascular stent is improved, and the slight variation of the position of a branch artery on an aortic arch is adapted.
3. The main Z-shaped framework is designed into a shape that the length of the main Z-shaped framework is gradually shortened from the large bending side to the small bending side of the main blood vessel support, so that after the blood vessel support is sent into an aortic arch, the Z-shaped framework and the whole main blood vessel support are easily adapted to the shape of the aortic arch.
4. The multi-group rope sling arranged outside the main blood vessel support film can bind the main blood vessel support, so that the blood vessel support can be sent into the blood vessel with a very small size, and the blood vessel support is more convenient to place into the blood vessel.
Drawings
FIG. 1 is a schematic structural diagram of a vascular stent graft according to an embodiment of the present invention.
FIG. 2 (a) is a schematic structural diagram of a main Z-shaped framework in an embodiment of the stent-graft of the present invention; FIG. 2 (b) is a schematic structural view of a main Z-shaped framework with modified contour lines on both sides.
Fig. 3 is a schematic view of the stent graft of the present invention installed at the aortic arch above the heart.
FIG. 4 is a schematic structural diagram of another embodiment of a stent graft according to the present invention.
Fig. 5 is a schematic structural view of a stent graft set arranged in a stent graft pusher according to an embodiment of the present invention.
Fig. 6 is an enlarged view of a portion a of fig. 5.
FIG. 7 is a schematic structural view of a vascular stent graft bundled with a bundle release wire of the vascular stent graft assembly of the present invention.
Fig. 8 is an enlarged view of a portion B of fig. 7.
In the above figures, the reference numerals are to indicate: the main stent 21, the main stent membrane 211, the main zigzag framework 212, the contour line 2121, the exposed section 213, the first loop 214, the free end 2141 of the first loop, the second loop 215, the free end 2151 of the second loop, the first branch stent 22, the first branch stent membrane 221, the first zigzag framework 222, the unsupported section 223, the second branch stent 23, the second branch stent membrane 231, the stent graft pusher 3, the locking member 31, the tapered head 32, the core tube 33, the hitching jaw 34, the first guide wire 41, the positioning knot 411, the guide sleeve 412, the bridge guide wire section 413, the safety guide wire section 414, the second guide wire 42, the binding release guide wire 43.
Detailed Description
The following examples are intended to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention in any way.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention; references to "first," "second," etc. are intended to distinguish between similar items and not necessarily to describe a particular order or sequence.
Example 1: a blood vessel stent-graft, the structure of which is shown in fig. 1 to 3.
As shown in fig. 1, the stent-graft comprises a main vessel stent 21, a first branch vessel stent 22 and a second branch vessel stent 23, wherein the main vessel stent 21 is tapered from front to back and has a substantially conical shape, the main vessel stent 21, the first branch vessel stent 22 and the second branch vessel stent 23 each comprise a tubular blood vessel stent membrane impermeable to blood, specifically, the main vessel stent 21 comprises a main vessel stent membrane 211, the first branch vessel stent 22 comprises a first branch vessel stent membrane 221, the second branch vessel stent 23 comprises a second branch vessel stent membrane 231, the lower ends of the first branch vessel stent membrane 221 and the second branch vessel stent membrane 231 are communicated with the upper side of the main vessel stent membrane 211, the main vessel stent membrane 211 and the first branch vessel stent membrane 221 are made of medical dacron cloth or expanded polytetrafluoroethylene, holes matched with the lower ends of the first branch vessel stent membrane 221 and the second branch vessel stent membrane 231 are reserved on the upper side of the main vessel stent membrane 211, the lower ends of the first branch vascular stent membrane 221 and the second branch vascular stent membrane 231 are sewed around the hole on the upper side surface of the main vascular stent membrane 211, and the sewed part of the lower ends of the first branch vascular stent membrane 221 and the second branch vascular stent membrane 231 and the main vascular stent membrane 211 is sealed and has no blood leakage.
The main blood vessel stent 21, the first branch blood vessel stent 22 and the second branch blood vessel stent 23 are all provided with Z-shaped skeletons inside the blood vessel stent membrane, the Z-shaped skeletons are made of medical steel wires, wherein seven main Z-shaped skeletons 212 are arranged inside the main blood vessel stent membrane 211 at intervals, the main Z-shaped skeletons 212 are sewn in the main blood vessel stent membrane 211, as shown in fig. 2- (a) and 2- (b), the main Z-shaped skeletons 212 are integrally in an annular waveform, in fig. 2- (b), the dotted lines on both sides of the main Z-shaped skeletons 212 are contour lines 2121 showing gradual change, and as can be seen, the main Z-shaped skeletons 212 are continuously narrowed from top to bottom along the contour lines 2121, that is, as shown in fig. 1, the width of the main Z-shaped skeletons 212 is gradually reduced from one side of the main blood vessel stent membrane.
The first and second branch vascular stent membranes 221 and 231 are provided with a Z-shaped skeleton therein, the first and second branch vascular stents 22 and 23 have similar structures, taking the first branch vascular stent 22 as an example, the upper portion thereof is provided with a first Z-shaped skeleton 222, as shown in fig. 1, one end of the first branch vascular stent membrane 221 near the main vascular stent membrane 211 is provided with an unsupported section 223, no Z-shaped skeleton is arranged inside the unsupported section 223, and the unsupported section 223 is flexible so as to guide the first branch vascular stent 22 into the corresponding vascular branch above the aortic arch.
As shown in fig. 1, the exposed section 213 is arranged at the front end of the foremost main Z-shaped framework in the main vessel stent 21, the exposed section 213 is not wrapped by the main vessel stent membrane 211, and the blood vessel stent graft can be hung in the blood vessel stent graft pusher by arranging the exposed section 213, so that the blood vessel stent graft can be conveniently pushed out of the blood vessel stent graft pusher during operation.
Fourteen groups of binding rope sling pairs are further arranged on the outer side of the main blood vessel support 21 at intervals, a group of binding rope sling pairs are respectively arranged on the front side and the rear side of each main Z-shaped framework 212, each group of binding rope sling pairs comprises a first rope sling 214 and a second rope sling 215, the second rope sling is positioned on the position, corresponding to the first rope sling 214, of the back side of the main blood vessel support membrane 211 in the figure 2, and the upper ends of the first rope sling 214 and the second rope sling 215 are sewn on the upper side of the main blood vessel support membrane 211.
The stent graft in this embodiment is used as follows:
as shown in fig. 3, ascending aorta 16, aortic arch 11, descending aorta 15, etc. are sent from heart 1 of human body, and the aortic arch 11 has three branches of brachiocephalic trunk 14, left common carotid artery 13 and left subclavian artery 12 on the side of great curvature, when the thoracic aortic dissection or thoracic aortic aneurysm is involved in the upper blood vessel branch, the intervention treatment can be carried out by the vascular stent graft of this embodiment. The dimensions of the main vessel stent 21, the first branch vessel stent 22 and the second branch vessel 23, and the positions of the first branch vessel stent 22 and the second branch vessel 23 communicated with the main vessel stent 21 are designed according to the sizes of the aortic arch and the corresponding branch vessel above the aortic arch of the patient. The main blood vessel stent membrane 211, the first branch blood vessel stent membrane 221 and the second branch blood vessel stent membrane 231 are made of medical polyester fabric or expanded polytetrafluoroethylene (impermeable to blood), the lower ends of the first branch blood vessel stent membrane 221 and the second branch blood vessel stent membrane 231 are hermetically sewn with the main blood vessel stent membrane 211, and blood leakage does not occur at the sewn part, so that pressure cannot be caused to a diseased blood vessel part, and a better protection effect is achieved on the diseased blood vessel; because the lower end of the first branch blood vessel stent membrane 221 is provided with the unsupported section 223, the unsupported section 223 is soft, and the first branch blood vessel stent 22 can conveniently and flexibly enter a branch blood vessel. As shown in fig. 4, since the main Z-shaped skeletons 212 are gradually narrowed from top to bottom, when the stent is delivered into the aortic arch, the lower part of the main stent membrane 211 between the adjacent main Z-shaped skeletons 212 can be compressed into folds, and the whole main stent 21 can adapt to the shape of the aortic arch 11. Since the left subclavian artery 12 is blocked by the vascular stent graft, an artificial bypass vessel 17 is required above the left common carotid artery 13 and the left subclavian artery 12 to maintain blood supply to the left subclavian artery 12.
Example 2: a blood vessel covered stent, the structure of which refers to fig. 3 and fig. 4.
As shown in fig. 4, compared with example 1, the stent of the present example includes a third branched stent 24 in addition to a main stent 21, a first branched stent 22, a second branched stent 23, and the third branched stent 24 also includes a tubular, blood-impermeable membrane which is externally and sealingly connected to the main stent membrane, and an internally disposed Z-shaped framework, as in the case of the first branched stent 22. A third branch vessel stent 24 may be used to be placed in the left subclavian artery 12 in fig. 3; in this case, it is not necessary to install an artificial blood vessel between the left common carotid artery 13 and the left subclavian artery 12.
Example 3: a vascular stent assembly, the structure of which is shown in fig. 5 and 6.
The stent assembly comprises the stent graft of example 1, and further comprises a first guide wire 41, a second guide wire 42 and a binding release guide wire 43 which are arranged in the stent graft pusher 3 in a penetrating way as shown in fig. 5, and the existing pusher can be adopted in the stent graft pusher 3. The first guide wire 41, the second guide wire 42 and the binding release guide wire 43 are all medical steel wires, and when penetrating into a blood vessel, the wires can be seen under medical imaging equipment, so that the operation is convenient.
As shown in fig. 6, a positioning knot 411 is fixedly provided on the first guide wire 41, the positioning knot 411 is a metal knob welded on the first guide wire, a guide sleeve 412 corresponding to the first branched vascular stent is fixedly provided on the positioning knot 411, the compressed first branched vascular stent can be inserted into the guide sleeve 412, the guide sleeve 412 is made of polyester fabric by sewing, is flexible, the front end of the guide sleeve 412 is sleeved on the positioning knot 411, the part behind the positioning knot 411 is cylindrical, and the guide sleeve 412 is tightly sewn up and down on the positioning knot 411 respectively, so that the guide sleeve 412 is located at the upper and lower positions of the positioning knot 411 and is reduced in diameter, and the guide sleeve 412 does not separate from the positioning knot 411. The first guide wire 41 comprises a bridging guide wire section 413 and a safety guide wire section 414, and as shown in fig. 5, the rear ends of the first guide wire 41 and the second guide wire 42 are provided with locking members 31 which can prevent the tail ends from being pulled into the outer sheath of the stent graft pusher 3.
When the compressed first branch blood vessel stent is arranged in the guide sleeve 412, the bridging guide wire section 413 can be pulled to guide the first branch blood vessel stent into a corresponding branch blood vessel above the aortic arch, and the guide sleeve 412 can be prevented from being separated from the first branch blood vessel stent at an improper position in the blood vessel by pulling the safe guide wire section 414. The first guide wire 41 is a single guide wire, and in other embodiments, the bridging and safety guide wire segments of the first guide wire are two separate guide wires, and the bridging and safety guide wire segments are connected to the guide sleeve, respectively. The second guide wire 42 has the same structure as the first guide wire 41, and a guide sleeve on the second guide wire 42 is used for installing the compressed second branch vascular stent.
The rear end of the binding release guide wire 43 penetrates out of the outer sheath of the blood vessel covered stent pusher 3, and can be used for reducing and binding the main blood vessel stent by matching with a binding rope sleeve on the outer side of the main blood vessel stent.
Example 4: a method for binding (compressing and storing) a blood vessel covered stent, which is shown in fig. 5 to 8.
The vascular stent graft binding method adopts the vascular stent graft component in the embodiment 3, and comprises the following steps:
(1) the first guide wire 41, the second guide wire 42 and the binding release guide wire 43 are all arranged in the blood vessel covered stent pusher 3 in a penetrating way.
(2) Binding the main vessel stent: the interval is equipped with the multiunit and ties rope sling pair in the main vascular support outside, tie rope sling pair including first rope sling and second rope sling, first rope sling and second rope sling all have one end to be connected to main vascular support one side, main vascular support one side is walked around to first rope sling, second rope sling is walked around and is corresponded after main vascular support opposite side and pass first rope sling, main vascular support is compressed, it passes the free end of second rope sling to tie release seal wire, make first rope sling and second rope sling tie up the main vascular support of compression.
Specifically, referring to fig. 7 and 8, the main stent membrane and the internal main Z-shaped framework are compressed to reduce the diameter of the main stent 21, the second loop 215 at the rear side of the main stent is wound around a half-circle from the rear side, the first loop 214 is wound around a half-circle from the front side, the free end 2141 of the first loop passes through the free end 2151 of the second loop, and the binding release guide wire 43 passes through the free end 2141 of the first loop, so that the main stent 21 is bound by the first loop 214 and the second loop 215, and each set of loop pairs are bound in this way to bind the main stent 21 finely. As shown in fig. 6, the tapered head 32 of the stent graft pusher 3 is provided with a jack, and the front end of the binding release wire 43 is positioned in the jack, so as to prevent the front end of the binding release wire 43 from being exposed and puncturing the vessel wall.
(3) Binding the branch vessel stent: a first guide wire 41 is threaded along the main vessel stent 21 into a first bifurcated vessel stent and the first bifurcated vessel stent 22 is compression fitted into a guide sleeve on the first guide wire 41, a second guide wire 42 is threaded along the main vessel stent 21 into a second bifurcated vessel stent and the second bifurcated vessel stent 23 is compression fitted into a guide sleeve on the second guide wire 42.
(4) The bundled main vessel stent 21, the first branch vessel stent and the second branch vessel stent are inserted into the vascular graft stent pusher 3.
Referring to fig. 6, the main vessel stent 21 is sleeved on the core tube 33 inside the stent graft pusher 3 and then compressed, the compressed main vessel stent 21, the first branch vessel stent and the second branch vessel stent are inserted into the front end of the outer sheath of the stent graft pusher 3, the exposed segment 213 of the main Z-shaped framework at the front end of the main vessel stent 21 can be hung on the hanging claw 34 at the front end of the core tube 33, the core tube 33 can be pushed out from the outer sheath of the stent graft pusher 3, so that when the stent graft pusher 3 starts to push from the femoral artery to the aortic arch, the core tube 33 can be pushed out, the stent graft is exposed from the outer sheath, the first vessel stent and the second vessel stent are respectively guided to the corresponding branch vessels under the guidance of the first guide wire 41 and the second guide wire 43, the first guide wire 41 and the second guide wire 42 are continuously pulled to make the guide sleeve from the first branch vessel stent 22, The second branch vessel stent 23 is taken off, and the first vessel branch stent 22 and the second branch vessel stent 23 are released; and then the binding release guide wire 43 is pulled out from the rear end of the blood vessel covered stent pusher 3, and the binding rope sleeve pair binding the main blood vessel stent 21 is released, so that the main blood vessel stent 21 is expanded.
The invention is explained in detail above with reference to the drawings and the embodiments; however, those skilled in the art will understand that various changes in the above embodiments and equivalent substitutions of related parts, structures and materials may be made without departing from the technical spirit of the invention, so as to form a plurality of specific embodiments, which are common variation ranges of the invention and will not be described in detail herein.
Claims (10)
1. A blood vessel covered stent is characterized by comprising a main blood vessel stent, a first branch blood vessel stent and a second branch blood vessel stent, wherein the main blood vessel stent, the first branch blood vessel stent and the second branch blood vessel stent respectively comprise a cylindrical blood vessel stent membrane which is impermeable to blood, and one end of the blood vessel stent membrane of the first branch blood vessel stent and one end of the blood vessel stent membrane of the second branch blood vessel stent are hermetically communicated with the side surface of the blood vessel stent membrane of the main blood vessel stent; the blood vessel stent comprises a main blood vessel stent, a first branch blood vessel stent and a second branch blood vessel stent, wherein Z-shaped skeletons are arranged inside blood vessel stent membranes of the main blood vessel stent, the first branch blood vessel stent and the second branch blood vessel stent, and the width of the Z-shaped skeletons on the main blood vessel stent is gradually reduced from the emitting side of the branch blood vessel stent on the main blood vessel stent to the opposite side of the branch blood vessel stent.
2. The stent graft of claim 1, further comprising a third branch vessel stent, wherein the third branch vessel stent also comprises a cylindrical blood-impermeable vessel stent membrane and an internal Z-shaped framework, and one end of the vessel stent membrane of the third branch vessel stent is hermetically communicated with the side surface of the vessel stent membrane of the main vessel stent.
3. The vascular stent graft of claim 1, wherein the end of the vascular stent membrane of the first branch vascular stent close to the main vascular stent is provided with a soft zone, and the soft zone is a support section without a Z-shaped framework.
4. The vascular stent graft of claim 1, wherein a plurality of sets of pairs of the binding grommets are spaced outside the main vascular stent, the pairs of the binding grommets including a first grommets and a second grommets, each of the first and second grommets having one end connected to the main vascular stent.
5. The vascular stent graft of claim 1, wherein the anterior end of the anterior-most Z-shaped framework of the main vascular stent is provided with an exposed section, and the diameter of the main vascular stent is gradually reduced from front to back.
6. The stent-graft of claim 1, wherein the stent-graft membranes of the main stent-graft, the first branch stent-graft and the second stent-graft are made of medical dacron or expanded polytetrafluoroethylene, holes matched with one ends of the first branch stent-graft and the second stent-graft are reserved on the side surface of the stent-graft membrane of the main stent-graft, and the ends of the stent-graft membranes of the first branch stent-graft and the second stent-graft are sutured around the holes on the side surface of the main stent-graft.
7. A stent graft assembly, comprising the stent graft of claim 1, and further comprising a first guide wire and a second guide wire, wherein the first guide wire and the second guide wire each comprise a bridging guide wire section and a safety guide wire section, and the first guide wire and the second guide wire each are correspondingly provided with a guide sleeve positioned between the bridging guide wire section and the safety guide wire section, and the guide sleeves are flexible and used for accommodating the compressed first branch stent graft or the second branch stent graft.
8. The vessel graft stent assembly according to claim 7, wherein the first guide wire is a whole guide wire, a positioning block is disposed on the first guide wire, the bridge guide wire section and the safety guide wire section are disposed at the front and rear parts of the positioning block, respectively, the guide sleeve is threaded on the first guide wire, and one end of the guide sleeve is fixed on the positioning block;
the second guide wire is the same in structure as the first guide wire.
9. The stent graft assembly of claim 7, wherein a plurality of sets of pairs of binding grommets are spaced apart on the outside of the main stent, each of the pairs of binding grommets including a first grommets and a second grommets having one end attached to the main stent, and further comprising a binding release wire for tightening the pairs of binding grommets, the first, second and binding release wires being steel wires.
10. A method for binding a stent graft according to claim 9, wherein the method comprises the steps of:
(1) the first guide wire, the second guide wire and the binding release guide wire are all arranged in the blood vessel covered stent pusher in a penetrating way;
(2) binding the main vessel stent: a plurality of groups of binding rope sleeve pairs are arranged at intervals outside the main vascular stent, each binding rope sleeve pair comprises a first rope sleeve and a second rope sleeve, one end of each of the first rope sleeve and the second rope sleeve is connected to one side of the main vascular stent, the first rope sleeve bypasses one side of the main vascular stent, the second rope sleeve bypasses the other side of the main vascular stent and correspondingly penetrates through the first rope sleeve, the main vascular stent is compressed, and the binding release guide wire penetrates through the free end of the second rope sleeve, so that the first rope sleeve and the second rope sleeve bind the compressed main vascular stent;
(3) binding the branch vessel stent: threading the first guidewire into the first branched vascular stent and the first branched vascular stent being compression fit into a guide sleeve on the first guidewire, threading the second guidewire into the second branched vascular stent and the second branched vascular stent being compression fit into a guide sleeve on the second guidewire;
(4) and inserting the bundled main vessel stent, the first branch vessel stent and the second branch vessel stent into a vascular graft stent pusher.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113876467A (en) * | 2021-12-08 | 2022-01-04 | 上海微创心脉医疗科技(集团)股份有限公司 | Covered stent |
| CN114652495A (en) * | 2022-05-18 | 2022-06-24 | 上海微创心脉医疗科技(集团)股份有限公司 | Covered stent |
| WO2022247581A1 (en) * | 2021-05-26 | 2022-12-01 | 上海微创心脉医疗科技(集团)股份有限公司 | Branch sheath and delivery system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2699895Y (en) * | 2004-05-28 | 2005-05-18 | 业聚医疗器械(深圳)有限公司 | Protection device for heart periphery vessel |
| CN105662650A (en) * | 2016-03-21 | 2016-06-15 | 中国医科大学附属第一医院 | Integrated coated branched vascular stent and conveying system thereof |
| WO2016123676A1 (en) * | 2015-02-05 | 2016-08-11 | State Of The Heart Innovations Pty Ltd | Aortic stent graft, delivery system and method |
| CN106214287A (en) * | 2016-08-24 | 2016-12-14 | 杨威 | Dissection of aorta operation overlay film frame, conveyer device and using method |
| CN109700566A (en) * | 2018-12-27 | 2019-05-03 | 东莞先健畅通医疗有限公司 | Conveying device and system |
| CN110507448A (en) * | 2019-08-22 | 2019-11-29 | 胡锡祥 | A kind of arch of aorta overlay film frame blood vessel and its application method |
| CN214632502U (en) * | 2020-12-25 | 2021-11-09 | 卢莉茵 | Blood vessel tectorial membrane support and blood vessel tectorial membrane support subassembly |
-
2020
- 2020-12-25 CN CN202011556380.9A patent/CN112603594A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2699895Y (en) * | 2004-05-28 | 2005-05-18 | 业聚医疗器械(深圳)有限公司 | Protection device for heart periphery vessel |
| WO2016123676A1 (en) * | 2015-02-05 | 2016-08-11 | State Of The Heart Innovations Pty Ltd | Aortic stent graft, delivery system and method |
| CN105662650A (en) * | 2016-03-21 | 2016-06-15 | 中国医科大学附属第一医院 | Integrated coated branched vascular stent and conveying system thereof |
| CN106214287A (en) * | 2016-08-24 | 2016-12-14 | 杨威 | Dissection of aorta operation overlay film frame, conveyer device and using method |
| CN109700566A (en) * | 2018-12-27 | 2019-05-03 | 东莞先健畅通医疗有限公司 | Conveying device and system |
| CN110507448A (en) * | 2019-08-22 | 2019-11-29 | 胡锡祥 | A kind of arch of aorta overlay film frame blood vessel and its application method |
| CN214632502U (en) * | 2020-12-25 | 2021-11-09 | 卢莉茵 | Blood vessel tectorial membrane support and blood vessel tectorial membrane support subassembly |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022247581A1 (en) * | 2021-05-26 | 2022-12-01 | 上海微创心脉医疗科技(集团)股份有限公司 | Branch sheath and delivery system |
| CN113876467A (en) * | 2021-12-08 | 2022-01-04 | 上海微创心脉医疗科技(集团)股份有限公司 | Covered stent |
| CN113876467B (en) * | 2021-12-08 | 2022-04-15 | 上海微创心脉医疗科技(集团)股份有限公司 | Covered stent |
| CN114652495A (en) * | 2022-05-18 | 2022-06-24 | 上海微创心脉医疗科技(集团)股份有限公司 | Covered stent |
| CN114652495B (en) * | 2022-05-18 | 2022-08-30 | 上海微创心脉医疗科技(集团)股份有限公司 | Covered stent |
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