CN107126299A - A kind of high submissive type thoracic aorta covered bracket and its shaper and method - Google Patents
A kind of high submissive type thoracic aorta covered bracket and its shaper and method Download PDFInfo
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- CN107126299A CN107126299A CN201710426655.9A CN201710426655A CN107126299A CN 107126299 A CN107126299 A CN 107126299A CN 201710426655 A CN201710426655 A CN 201710426655A CN 107126299 A CN107126299 A CN 107126299A
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- support ring
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- thoracic aorta
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- type support
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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
-
- 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
- A61F2002/075—Stent-grafts the stent being loosely attached to the graft material, e.g. by stitching
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/0056—W-shaped, e.g. M-shaped, sigma-shaped
-
- 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
- A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2240/001—Designing or manufacturing processes
- A61F2240/002—Designing or making customized prostheses
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
Landscapes
- Health & Medical Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
A kind of high submissive type thoracic aorta covered bracket and its shaper and method, it includes covering material and metallic framework, and the covering material is attached to the metallic framework surface, forms tubular structure, and be fixedly connected with the metallic framework by medical suture；The metallic framework includes some W types support rings and screw type support ring, and each screw type support ring is located between adjacent W type support rings, and the two ends of each screw type support ring are fixedly connected with adjacent W type support rings respectively；The covering material one end is provided with the bare bracket of W types, and the two ends of the covering material are equipped with developing mark.The high submissive type thoracic aorta covered bracket of the present invention, it is used for the PCI of Human Thoracic Aortic Dissection and aneurysm of thoracic aorta, the compliance of rack body can be improved, sustainer form is more easily adapted to conform to after stenter to implant sustainer, adherence quality is more preferably, can interior leakage of the reduction caused by stenter to implant, the complication such as the new cut of support source property.
Description
Technical field
The invention belongs to technical field of medical instruments, more particularly to a kind of Minimally Interventional Therapy Human Thoracic Aortic Dissection and chest master
Aneurysmal high submissive type thoracic aorta covered bracket and its shaper and method.
Background technology
Dissection of aorta and aortic aneurysm are a kind of vascular diseases of high mortality, and as aging population aggravates and faces
The constantly improve of bed diagnostic techniques, its incidence of disease/discovery rate is just improved year by year.
Dissection of aorta and aneurysmal treatment method include internal medicine treatment, surgical operation therapy and PCI.
Drug therapy is Primary Care, and main purpose is analgesic, is reduced blood pressure and left ventricular ejection speed.Surgical intervention is Stanford A
The essential therapeutic arsenals of type lesion, main purpose is to prevent sustainer from occurring rupture or pericardial tamponade；Eliminate aortic regurgitation
With avoid myocardial ischemia.PCI is also known as intracavitary therapy (endo vascular aortic repair, EVAR), be on
The new technology grown up the nineties in century.By the development of nearly 30 years, improvement and interventional technique with support were not
Disconnected perfect, EVAR technologies are more and more extensive in dissection of aorta and aneurysmal application, and show huge superiority, obtain
Satisfied nearly mid-term effects, as the indispensable method for the treatment of arotic disease.
Aorta pectoralis EVAR (Thoracic endovascular aortic repair, TEVRA) is exactly will be with
The thoracic aorta covered bracket of lesion aorta pectoralis matching is preset in induction system, dynamic through stock under radioscopy monitoring
Arteries and veins is imported, and after support reaches lesion aorta pectoralis position, support is discharged out of delivery device, and be allowed to come to original mouth
Footpath, makes blood flow be flowed through from artificial blood vessel's intracavitary, and the intimal tear and Ectasia of Human Thoracic Aortic Dissection are to be isolated.
The skeleton of most of aorta pectoralis support is constituted by " W " type metallic support in the market.The structure of support ring
It is so designed that advantage is：First, easily compression, convenient pressure, which is held, makes support be positioned in the delivery device of volume very little；Second, branch
Frame globality is good, and after-poppet is difficult cripetura inside release process and stenter to implant sustainer.However, due to the metal branch of the structure
Frame ring causes the aorta pectoralis support of the type overall more stiff, is difficult to adapt to master after stenter to implant in axial inflexibility
, easily there is adherent bad, interior leakage, angle sign, the problems such as puncturing sustainer formation support source property new cut in the tortuous form of artery.
The content of the invention
It is an object of the invention to provide the high submissive type thoracic aorta covered bracket of one kind, its be used for Human Thoracic Aortic Dissection and
The PCI of aneurysm of thoracic aorta, sustainer is more easily adapted to conform to after improving the compliance of rack body, stenter to implant sustainer
Form, adherence quality more preferably, can reduce the interior leakage caused by stenter to implant, the complication such as new cut of support source property.
Another object of the present invention is to provide a kind of shaper of high submissive type thoracic aorta covered bracket, its structure
Simply, the overlay film frame of manufacture is accurate, and manufacture efficiency is high.
It is still another object of the present invention to provide a kind of method for shaping of high submissive type thoracic aorta covered bracket, its process
Simply, the overlay film frame steady quality of manufacture, manufacture efficiency is high.
To achieve the above object, the present invention takes following technical scheme：
A kind of high submissive type thoracic aorta covered bracket, it includes covering material and metallic framework, covering material attachment
In the metallic framework surface, tubular structure is formed, and be fixedly connected with the metallic framework by medical suture；
The metallic framework includes some W types support rings and screw type support ring, and each screw type support ring is located at adjacent W types
Between support ring, and the two ends of each screw type support ring are fixedly connected with adjacent W type support rings respectively；The covering material one end
Bare bracket provided with W types, the two ends of the covering material are equipped with developing mark.
Further, the covering material outer surface is provided with some annular grooves, the W types support ring and screw type branch
Frame ring may be contained between adjacent grooves.
Further, the section of the groove inner surface is curved, and the circular radius of correspondence is 1-5mm, the corresponding center of circle
Angle is 30 ° -180 °.
Further, the distance between adjacent grooves are 10-20mm, than corresponding W types support ring or screw type support
The big 2-3mm of height of ring.
Further, the height positioned at the W type support rings at two ends is less than the height of the W type support rings positioned at middle part.
Further, the height positioned at the W type support rings at two ends is 8mm-12mm, positioned at the height of the W type support rings at middle part
Spend for 13-17mm.
Further, the string diameter of the screw type support ring is less than or equal to the string diameter of the W types support ring.
A kind of shaper of high submissive type thoracic aorta covered bracket, it includes the body of cylinder, the body surface
Some W types regions and coil region are interval with, the W types region includes some raised sizing posts, the line shape of each sizing post
Into W types；The coil region is helical groove, and the sizing post of the two ends of the helical groove respectively with adjacent W types region connects.
A kind of method for shaping of high submissive type thoracic aorta covered bracket, utilizes described shaper；By silk material around this
The W types region of shaper and coil region, by shaping post and helical groove forms W types support ring and screw type support respectively
Ring, is shaped each W types support ring and screw type support ring by being heat-treated.
Further, the silk material of the W types region and coil region is same；Or be different silk materials, pass through capillary
Tubing or spring are attached.
The beneficial effects of the invention are as follows：First, the metallic framework of the high submissive type thoracic aorta covered bracket of the present invention is W types
Support ring and screw type support ring interphase distribution, with more preferably compliance, can effectively reduce interior leakage, the new cut of support source property etc.
Related complication；Secondly, relative to traditional W type support rings, in the case of identical string diameter, screw type support ring has bigger
Preferably instant surgical effect can be reached after radial support power, implantable intravascular, makes true chamber that there is more preferably fullness degree.
Brief description of the drawings
Fig. 1 is a kind of high submissive schematic diagram of embodiment of type thoracic aorta covered bracket of the present invention.
Fig. 2 is the structural representation of the metallic framework of the high submissive type thoracic aorta covered bracket of the present invention.
Fig. 3 is the structural representation of the covering material of the high submissive type thoracic aorta covered bracket of the present invention.
Fig. 4 is the structural representation of the shaper of the high submissive type thoracic aorta covered bracket of the present invention.
Fig. 5 weaves process schematic for the metallic framework of the high submissive type thoracic aorta covered bracket of the present invention.
Fig. 6 is the metallic framework type-approval process schematic diagram of the high submissive type thoracic aorta covered bracket of the present invention.
Fig. 7 holds schematic diagram for the pressure of the high submissive type thoracic aorta covered bracket W type support rings of the present invention.
Fig. 8 holds schematic diagram for the pressure of the high submissive type thoracic aorta covered bracket screw type support ring of the present invention.
Fig. 9 holds for the another embodiment and pressure of the high submissive type thoracic aorta covered bracket screw type support ring of the present invention
Schematic diagram.
Embodiment
The embodiment to the present invention is described in detail with reference to the accompanying drawings.
In text thoracic aorta covered bracket close to one end of heart be near-end, thoracic aorta covered bracket away from heart one
Hold as distal end.
As shown in figure 1, the present invention provides a kind of high submissive type thoracic aorta covered bracket, it can be used for Human Thoracic Aortic Dissection
With the PCI of aneurysm of thoracic aorta, it includes covering material 1 and metallic framework 2, and the covering material 1 is attached to the metallic framework
2 surfaces, form tubular structure, and be fixedly connected with the metallic framework 2 by medical suture 5.
As shown in Fig. 2 the metallic framework 2 includes some W types support rings 21 and screw type support ring 22, each screw type support
Ring 22 be located at adjacent W types support ring 21 between, and each screw type support ring 22 two ends respectively with adjacent W types support ring 21
It is fixedly connected, the string diameter of the screw type support ring 22 is less than or equal to the string diameter of the W types support ring 21.The covering material 1 can
From medical polyester material, in order to coordinate induction system to realize the rear release of thoracic aorta covered bracket near-end, set in its near-end
There is the bare bracket 23 of W types.In order to observe and adjust the position of thoracic aorta covered bracket in the blood vessels, in the near of covering material
End and distal end are sewed with developing mark 12, and developing mark 12 is made up of heavy metals such as gold, platinumiridios.The He of W types support ring 21
Screw type support ring 22 is sutured in inside covering material 1 with medical suture, and suture is mainly used in fixing W types support ring 21, spiral shell
Rotation type support ring 22 can be fixed without suture, or have 1-2 point to be fixed with suture in circumferencial direction.
It is less than the height of the W type support rings positioned at middle part positioned at the height of the W type support rings at two ends.For example, positioned at two ends
W type support rings height be 8mm-12mm, positioned at middle part W type support rings height be 13-17mm.Set with this, can be with
Make mount proximal end and distal end that there is more preferably compliance and bigger radial support power, and reduce mid-stent in release process
With the risk of generation cripetura after implantable intravascular.
As shown in figure 3, the outer surface of covering material 1 is provided with some annular grooves 11, the W types support ring 21 and screw type
Support ring 22 may be contained between adjacent grooves 11.The section of the inner surface of groove 11 is curved, and the circular radius of correspondence is 1-
5mm, corresponding center of circle angle is 30 ° -180 °.The distance between adjacent grooves 11 are 10-20mm, than corresponding W types support ring
The 21 or big 2-3mm of height of screw type support ring 22, the position of groove 11 is without support ring.
As shown in figure 4, the present invention also provides a kind of shaper of high submissive type thoracic aorta covered bracket, it includes circle
The body 3 of cylindricality, the surface of body 3 is interval with some W types regions and coil region, and the W types region includes some raised
Sizing post 31, the line formation W types of each sizing post 31.The coil region is helical groove 32, the two ends point of the helical groove 32
Sizing post 31 not with adjacent W types region connects.
As shown in Fig. 5-Fig. 6, the present invention also provides a kind of method for shaping of high submissive type thoracic aorta covered bracket, utilizes
Shaper 3 in above-mentioned Fig. 4.By silk material 4, such as NiTi shape memory alloy wire materials, around the W types region of the shaper 3
And coil region, by shaping post 31 and helical groove 32 forms W types support ring 21 and screw type support ring 22 respectively, pass through heat
Each W types support ring 21 and screw type support ring 22 are shaped in processing.
The silk material of the W types region and coil region can be same；Or for different silk materials, by capillary tubes or
Spring is attached.
Formed when W types support ring 21 and screw type support ring 22 are woven by a silk material, the silk of the screw type support ring 22
Footpath is equal to the string diameter of the W types support ring 21, and the radial support power of screw type support ring 22 is more than the radial support of W types support ring 21
Power.Formed when W types support ring 21 and screw type support ring 22 are woven by different silk materials respectively, and the string diameter of W types support ring 21 is big
In the string diameter of screw type support ring 22, set with this, the support ring radial support power of two kinds of structures is closer to, support ring difference
It is attached after sizing with capillary tubes or spring.
As shown in figs. 7 to 9, W types support ring 21 of the invention and screw type support ring 22 can carry out radial compression, pressure
The induction system of internal diameter very little can be loaded after contracting, in order to by way of Minimally Interventional Therapy by the aorta pectoralis being relatively large in diameter
Overlay film frame is delivered to aortic arch.
Fig. 8 holds schematic diagram for a kind of pressure of the screw type support ring 22 of standard of thoracic aorta covered bracket of the present invention, the branch
Frame ring is the screw type of standard, and initiating terminal and tail end differ 90 ° in circumferencial direction.
Fig. 9 holds signal for the another embodiment and its pressure of thoracic aorta covered bracket screw type support ring 22 of the present invention
Figure, the support ring has slight fluctuating on the basis of master screw type support ring at interval of 90 °, and being set with this more to facilitate
The compression of support ring, reduces the stress after support ring compression.
It should be noted that described above is only the present invention preferably embodiment, in order to make this
Art personnel are better understood from the present invention, do not apply to limit the scope of the present invention and application, every essence in the present invention
God or principle within, any modification, equivalent substitution and improvements done etc. should be included in the present invention protect within the scope of.
Claims (10)
1. a kind of high submissive type thoracic aorta covered bracket, it is characterised in that it includes covering material and metallic framework, the overlay film
Material is attached to the metallic framework surface, forms tubular structure, and be fixedly connected with the metallic framework by medical suture；
The metallic framework includes some W types support rings and screw type support ring, and each screw type support ring is located at adjacent W type supports
Between ring, and the two ends of each screw type support ring are fixedly connected with adjacent W type support rings respectively；The covering material one end is provided with
The bare bracket of W types, the two ends of the covering material are equipped with developing mark.
2. high submissive type thoracic aorta covered bracket according to claim 1, it is characterised in that the covering material appearance
Face is provided with some annular grooves, and the W types support ring and screw type support ring may be contained between adjacent grooves.
3. high submissive type thoracic aorta covered bracket according to claim 2, it is characterised in that the groove inner surface
Section is curved, and the circular radius of correspondence is 1-5mm, and corresponding center of circle angle is 30 ° -180 °.
4. the high submissive type thoracic aorta covered bracket according to Claims 2 or 3, it is characterised in that between adjacent grooves
Distance be 10-20mm, than the big 2-3mm of height of corresponding W types support ring or screw type support ring.
5. high submissive type thoracic aorta covered bracket according to claim 1, it is characterised in that the W type branch positioned at two ends
The height of frame ring is less than the height of the W type support rings positioned at middle part.
6. high submissive type thoracic aorta covered bracket according to claim 5, it is characterised in that the W type branch positioned at two ends
The height of frame ring is 8mm-12mm, is 13-17mm positioned at the height of the W type support rings at middle part.
7. high submissive type thoracic aorta covered bracket according to claim 1, it is characterised in that；The screw type support ring
String diameter be less than or equal to the W types support ring string diameter.
8. a kind of shaper of high submissive type thoracic aorta covered bracket, it is characterised in that it includes the body of cylinder, should
Body surface is interval with some W types regions and coil region, and the W types region includes some raised sizing posts, post of respectively shaping
Line formation W types；The coil region is helical groove, the sizing post of the two ends of the helical groove respectively with adjacent W types region
Connect.
9. a kind of method for shaping of high submissive type thoracic aorta covered bracket, it is characterised in that utilize determining described in claim 8
Pattern has；By silk material around the W types region of the shaper and coil region, by shaping post and helical groove forms W types respectively
Support ring and screw type support ring, are shaped each W types support ring and screw type support ring by being heat-treated.
10. the method for shaping of high submissive type thoracic aorta covered bracket according to claim 9, it is characterised in that the W
The silk material of type region and coil region is same；Or be different silk materials, it is attached by capillary tubes or spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710426655.9A CN107126299A (en) | 2017-06-08 | 2017-06-08 | A kind of high submissive type thoracic aorta covered bracket and its shaper and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710426655.9A CN107126299A (en) | 2017-06-08 | 2017-06-08 | A kind of high submissive type thoracic aorta covered bracket and its shaper and method |
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| CN107126299A true CN107126299A (en) | 2017-09-05 |
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| CN201710426655.9A Pending CN107126299A (en) | 2017-06-08 | 2017-06-08 | A kind of high submissive type thoracic aorta covered bracket and its shaper and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624747A (en) * | 2018-06-28 | 2018-10-09 | 上海理工大学 | A kind of aortic stents ring shaping mould |
| CN109124822A (en) * | 2018-06-25 | 2019-01-04 | 上海理工大学 | A kind of aorta pectoralis support ring pre-bending shaping mould |
| CN109894550A (en) * | 2019-03-12 | 2019-06-18 | 佛山市迪华科技有限公司 | Spiral shape mesh basket shaper and spiral shape mesh basket forming method |
| CN114206408A (en) * | 2019-06-05 | 2022-03-18 | 施菲姆德控股有限责任公司 | Catheter blood pump and methods of use and manufacture thereof |
| CN114701104A (en) * | 2022-04-29 | 2022-07-05 | 深圳市库珀科技发展有限公司 | Covered stent and monofilament pressing device thereof |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
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| CN109124822A (en) * | 2018-06-25 | 2019-01-04 | 上海理工大学 | A kind of aorta pectoralis support ring pre-bending shaping mould |
| CN108624747A (en) * | 2018-06-28 | 2018-10-09 | 上海理工大学 | A kind of aortic stents ring shaping mould |
| CN108624747B (en) * | 2018-06-28 | 2024-03-26 | 上海理工大学 | Aortic stent ring shaping die |
| CN109894550A (en) * | 2019-03-12 | 2019-06-18 | 佛山市迪华科技有限公司 | Spiral shape mesh basket shaper and spiral shape mesh basket forming method |
| CN114206408A (en) * | 2019-06-05 | 2022-03-18 | 施菲姆德控股有限责任公司 | Catheter blood pump and methods of use and manufacture thereof |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| CN114701104A (en) * | 2022-04-29 | 2022-07-05 | 深圳市库珀科技发展有限公司 | Covered stent and monofilament pressing device thereof |
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Application publication date: 20170905 |