CN108670511A - A kind of flexible short holder of screw type - Google Patents
A kind of flexible short holder of screw type Download PDFInfo
- Publication number
- CN108670511A CN108670511A CN201810566142.2A CN201810566142A CN108670511A CN 108670511 A CN108670511 A CN 108670511A CN 201810566142 A CN201810566142 A CN 201810566142A CN 108670511 A CN108670511 A CN 108670511A
- Authority
- CN
- China
- Prior art keywords
- wave
- coiling
- circular arc
- rib
- connecting bridge
- 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.)
- Pending
Links
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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
-
- 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
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/9155—Adjacent bands being connected to each other
- A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
-
- 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
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/9155—Adjacent bands being connected to each other
- A61F2002/91575—Adjacent bands being connected to each other connected peak to trough
-
- 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
- A61F2250/0067—Means for introducing or releasing pharmaceutical products into the body
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Optics & Photonics (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Physics & Mathematics (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a kind of flexible short holders of screw type, by rack body area, development positioning area composition.First waveform object coiling, the second wave coiling, third wave coiling, the 4th wave coiling, the 4th wave coiling and the 4th wave coiling are connected by various connecting bridge forms rack body area.Development positioning area is made of developing ring and positioning bridge.The flexible short holder of the screw type has the expansion state of the compressive state and swell diameter of collapsed diameter.Structure of the invention is uniform, and development effect is excellent, accurate positioning, and radial strength is high, and compliance is good and occupation mode is innovated and using persistently effective.
Description
Technical field
The present invention relates to implanted prosthese the field of medical instrument technology, the flexible short holder of specifically a kind of screw type.
Background technology
Body lumen is narrow, blocks and restenosis, and it is common and dangerous lesion that tube chamber tumor, which becomes, etc.；Clinically such lesion
It can be happened in any physiology tube chamber, including cardiovascular and cerebrovascular, endocrine urogenital system, in digestion and respiratory system cavity.
Short in view of Balloon catheter dilatation, intraluminal stent art is to treat important, the even main treatment means of such lesion.
In view of the difference of release expansion fashion, intraluminal stent can be divided into self-expansion type holder and balloon expandable stent.
After release, easily there is a phenomenon where caving in complex physiologic environment, the general wealthy formula holder of ball is only applied in Biological Strength
It learns in the comparatively gentle coronary artery of environment.And use simply, the excellent self-expansion type stent applications of radial support power are extensive, and this
Patent focus of interest.
It is made currently, self-expanding stent is generally cut by laser and is post-processed by shape memory metal pipe.This kind of holder is usual
Radial support is good, conveys registration, and compression and expansion are cheap.Although self-expanding stent has ripe research and development and long
Clinical practice history, but its structure and performance remain many defects at present.
The present invention provides a kind of structure design for holder, it is made to have both good compliance, sufficient radial direction by force
While degree and axial strength；Development is clear, accurate positioning；Pressure is held conveniently, and multiple short holders use substitute long stent simultaneously, into
One step improves compliance.In addition this kind of holder can also provide Drug loading capacity, keep operation more accurate, easy.
Invention content
This invention address that providing a kind of clear with development, registration；It is cheap that pressure holds release；Compliance is good, radial
Intensity is high；And multiple short holders are used using alternative root long holder simultaneously.
The purpose of the present invention is what is be achieved through the following technical solutions：A kind of flexible short holder of screw type, including holder sheet
Body area and development positioning area.
Rack body area by positioned at end the 5th wave coiling and the 6th wave coiling, be located at described two ends
Between first waveform object coiling, between the coiling of first waveform object and end pass through transition region realize connection, the transition region packet
Include the second wave coiling, third wave coiling, the 4th wave coiling.Wherein, the 5th wave coiling passes through the second wave
The coiling of shape object is connect with first waveform object coiling, and the 6th wave coiling passes sequentially through the 4th wave coiling and third wave
Coiling is connect with first waveform object coiling.Each wave winding department forms coherent whole.
Positioning area develop by a developing ring and a positioning bridge, composition；Containing there are one welding development metals in developing ring
Development point.
The coiling of first waveform object is in turn connected to form helical structure by multiple first waveform objects, and first waveform object is by two
One circular arc unit and two first rib compositions；One of them first circular arc unit constitutes the wave crest of first waveform object, another
Constitute the trough of first waveform object；Wave is axially presented along helical structure in all first waveform objects in the first waveform object coiling
Peak arranges trough mode；First rib length is consistent；
5th wave coiling is sequentially connected by multiple 5th waves, and the 6th wave coiling is by multiple 6th waves
It is sequentially connected, the 5th wave coiling connects to form loop configuration with the 6th wave coiling, and each 5th wave is by two
5th rib and two the 5th circular arc unit compositions, one of them the 5th circular arc unit constitutes the wave crest of the 5th wave, another
A trough for constituting the 5th wave；5th rib length is consistent；Each 6th wave is by two the 6th ribs and two
A 6th circular arc unit composition, one of them the 6th circular arc unit constitute the wave crest of the 6th wave, another the 6th wave
Trough；6th rib length is consistent.
Transition region is a right angle trapezoid area, and the second wave coiling is located at the top in the right-angled trapezium region；Second wave
The coiling of shape object is connected in sequence by multiple second waves, and each second wave is justified by two the second ribs and two second
Arc unit forms, one of them second circular arc unit constitutes the wave crest of the second wave, another constitutes the wave of the second wave
Paddy；Length is incremented by multiple second rib respectively from top to bottom；
The coiling of third wave and the 4th wave coiling are located at the lower part of the trapezoid area, and third wave coiling is by more
A third wave is connected in sequence, and third wave is formed by connecting by two third ribs and two third circular arc units；
4th wave coiling is connected in sequence by multiple 4th waves, and the 4th wave is by two the 4th ribs and two the 4th
Circular arc unit is formed by connecting, and the third rib, the 4th rib are incremented by multiple respectively from top to bottom；
The 4th wave coiling beginning is connected with the second wave coiling tail end, the beginning of the third wave coiling
End is connected by Type B third connecting bridge with the second rib of the second wave coiling bottom；
Second wave coiling, third wave coiling, the 4th wave coiling collectively form a loop configuration, wherein
The beginning of second wave coiling is connected with the end of the 4th wave coiling, the end of third wave coiling and first waveform
The end of object coiling is connected.
There are several first connecting bridges between each adjacent spiralization cycle of first waveform object coiling；First connecting bridge
Both ends connection is located at the first circular arc unit on different spiralization cycles；
There are multiple second connecting bridges between the coiling of first waveform object and the second wave coiling；Second connecting bridge connection the
One circular arc unit and the second circular arc unit.And one of them second connecting bridge is connected to the second of the second wave coiling bottom
Circular arc unit；
There is A type third connecting bridges, the connection of A type third connecting bridges between the coiling of first waveform object and third wave coiling
First circular arc unit and third circular arc unit.
There is the 4th connecting bridge, the 4th connecting bridge to connect third circle between the coiling of third wave and the 4th wave coiling
Arc unit and the 4th circular arc unit.
Second wave is connect with the 5th wave by multiple the 5th axially disposed connecting bridges, and specific link position is
Between two opposite the second circular arc units and the 5th circular arc unit.
4th wave is connect with the 6th wave by multiple the 6th axially disposed connecting bridges, and specific link position is
Between two opposite the 4th circular arc units and the 6th circular arc unit.
Further, the coiling of first waveform object includes 3~4 spiralization cycles.Each spiral week of first waveform object coiling
Phase includes 16 first waveform objects；Second wave coiling includes 9 the second waves；Third wave coiling includes 6 the
Three waves；4th wave coiling includes 7 the 4th waves；5th wave coiling includes 8 the 5th waves；6th
Wave coiling includes 8 the 6th waves.
Further, first waveform object coiling helical angle is 70 degree；Second wave coiling spiral angle is 78 ° -82 °；
Third wave coiling spiral angle is 70 ° -75 °；4th wave coiling spiral angle is 75 ° -85 °.
Further, the length of the second rib for being connected to the second wave coiling of the Type B third connecting bridge
At 32%-40%, it is biased to first waveform object side.
Further, the first connecting bridge, the second connecting bridge, third connecting bridge, the 4th connecting bridge inclined direction are identical.First
Connecting bridge, the range of tilt angles of A type third connecting bridges：68°-72°；Type B third connecting bridge angle of inclination is 66 ° -70 °；Even
The the second connecting bridge range of tilt angles for being connected to the second circular arc unit of the second wave coiling bottom is 68 ° -72 °, remaining
The second connecting bridge angle of inclination be 55 ° -72 °；4th connecting bridge angle of inclination is 32 ° -35 °.
Further, there are 3-4 to be not connected with for the both sides of any one the first circular arc unit for being connected with the first connecting bridge
First circular arc unit of the first connecting bridge；Any one second circular arc unit both sides for being connected with the second connecting bridge has 3-4
Second circular arc unit of not connected second connecting bridge；Any one is connected with the third circular arc unit both sides of A type third connecting bridges
The third circular arc unit for being not connected with arbitrary connecting bridge with 3-4.Any one is connected with the circular arc unit two of the 4th connecting bridge
Side has the 3-4 circular arc units for being not connected with arbitrary connecting bridge.
Further, the first rib length is consistent；Second rib length is in the equal ratios that common ratio is 1-1.1 from top to down
Ordered series of numbers is incremented by；Third rib length is in that the Geometric Sequence that common ratio is 1-1.15 is incremented by from top to down；4th rib length from upper and
It is in that the Geometric Sequence that common ratio is 1-1.2 is incremented by down；5th rib and the 6th rib length are consistent.And the 5th rib and the 6th
The length of rib is unequal.The length of any second rib is longer than the first rib, third rib and the 4th rib；Second rib
Width be wider than the width of other ribs.
Further, the first connecting bridge length is consistent；5th connecting bridge length is in the equal ratios that common ratio is 1-1.2 from top to down
Ordered series of numbers is incremented by；6th connecting bridge length is in that the Geometric Sequence that common ratio is 1-1.1 is incremented by from top to down.And shortest 5th connecting bridge
Length is more than the 1/4 of the 5th rib length.
Further, one first, vertical span interval connection circular arc between two connecting pins of first connecting bridge.
Similarly, vertical one, span interval company between two connecting pins of second connecting bridge, third connecting bridge and the 4th connecting bridge
Connect circular arc.
Further, the length for positioning bridge is 0.5-1 times of the 6th rib length.The transversal maximum width of development point is the
6-7 times of six rib width.
The technological merit of the present invention is：
1, holder development zone is more than ordinary stent developing regional area, and development is clear, registration；
2, supporting structure is uniform, and length is shorter, and it is cheap that pressure holds release；
3, rack body center open-loop design, wave wave crest arranges trough, good bandability, and compliance is strong；
4, rack body both ends closed loop design, wave crest arranges wave crest, and polarization is good；
5, rack body distal end has two kinds of rib, and length is inconsistent, is positioned convenient for holder；
6, holder is short compared with ordinary stent, multiple to be used in series, and reduces metal and human contact's area, reduces to the greatest extent
The fracture that bracket bent generates, using effect is more preferably.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the partial structural diagram of the embodiment of the present invention；
Fig. 3 is the schematic diagram after the extension of rack body area；
Fig. 4 is the schematic diagram of wave；
Fig. 5 is the schematic diagram after developing positioning area extension；
In figure, 1- rack bodies area, 11- first waveform object coilings, 111- first waveform objects, 111a-the first ribs,
111b- the first circular arc units, 12- the second wave coilings, the second waves of 121-, 121a-the second ribs, 121b- second justify
Arc unit, 13- third wave coilings, 131- third waves, 131a-third rib, 131b- third circular arc units, 14-
Four wave coilings, the 4th waves of 141-, four ribs of 141a-the, the 4th circular arc units of 141b-, the 5th waves of 15- around
Line, the 5th waves of 151-, five ribs of 151a-the, the 5th circular arc units of 151b-, the 6th wave coilings of 16-, 161- the 6th
Wave, six ribs of 161a-the, the 6th circular arc units of 161b-；The first connecting bridges of 01-, the second connecting bridge of 02a-A types, 02b-B
The second connecting bridge of type, 03a-A type third connecting bridges, 03b-B type third connecting bridges, the 4th connecting bridges of 04-, the 5th connecting bridges of 05-,
The 6th connecting bridges of 06-；2- development positioning areas, 21- developing rings, 211- development points, 22- position bridge.
Specific implementation mode
The invention discloses a kind of innovative flexible short holders of screw type, can be expanded by first external diameter self-expansion when compressing
To the second external diameter for matching lesion cavity, it can be used for expanding any blocking or narrow pipeline and treat luminal stenosis, narrow again
Narrow, tube chamber tumor becomes or the diseases such as tube wall interlayer.
As shown in Figure 1, a kind of flexible short holder of screw type is made of rack body area 1 and development positioning area 2；
As shown in Fig. 2, rack body area 1 by positioned at end the 5th wave coiling 15 and the 6th wave coiling 16,
First waveform object coiling 11 between described two ends passes through transition region reality between first waveform object coiling 11 and end
It now connects, the transition region includes the second wave coiling 12, third wave coiling 13, the 4th wave coiling 14.Wherein,
5th wave coiling 15 is connect by the second wave coiling 12 with first waveform object coiling 11, the 6th wave coiling 16 according to
It is secondary to be connect with first waveform object coiling 11 by the 4th wave coiling 14 and third wave coiling 13.Each wave winding department
It is formed coherent whole.
Positioning area 2 develop by a developing ring 21 and a positioning bridge 22, composition；Containing there are one welding to show in developing ring 21
The development point 211 of shadow metal.
First waveform object coiling 11 is in turn connected to form helical structure, first waveform object 111 by multiple first waveform objects 111
It is made of two the first circular arc unit 111b and two first rib 111a；One of them first circular arc unit 111b constitutes first
The wave crest of wave 111, another constitutes the trough of first waveform object 111；All in the first waveform object coiling 11
One wave 111 is axially presented wave crest along helical structure and arranges trough mode；After holder release expansion, upper circle wave crest is just
It falls in next circle trough, has improved the compliance and compliance in central body area to the full extent.First rib 111a long
Degree is consistent；
5th wave coiling 15 is sequentially connected by multiple 5th waves 151, and the 6th wave coiling 16 is by multiple
Six waves 161 are sequentially connected, and the 5th wave coiling 15 and the 6th wave coiling 16 connection form loop configuration, Mei Ge
Five waves 151 are made of two the 5th rib 151a and two the 5th circular arc unit 151b, one of them the 5th circular arc unit
151b constitutes the wave crest of the 5th wave 151, another constitutes the trough of the 5th wave 151；5th rib 151a length is protected
It holds consistent；Each 6th wave 161 is made of two the 6th rib 161a and two the 6th circular arc unit 161b, one of them
6th circular arc unit 161b constitutes the wave crest of the 6th wave 161, the trough of another the 6th wave 161；6th rib
161a length is consistent.
Transition region is a right angle trapezoid area, and the second wave coiling 12 is located at the top in the right-angled trapezium region；Second
Wave coiling 12 is connected in sequence by multiple second waves 121, and each second wave 121 is by two the second ribs
121a and two the second circular arc unit 121b composition, one of them the second circular arc unit 121b constitute the wave of the second wave 121
Peak, another constitutes the trough of the second wave 121；Length is incremented by multiple second rib 121a respectively from top to bottom；
The coiling 13 of third wave and the 4th wave coiling 14 are located at the lower part of the trapezoid area, third wave coiling
13 are connected in sequence by multiple third waves 131, and third wave 131 is justified by two third rib 131a and two thirds
Arc unit 131b is formed by connecting；4th wave coiling 14 is connected in sequence by multiple 4th waves 141, the 4th wave
141 are formed by connecting by two the 4th rib 141a and two the 4th circular arc unit 141b, and the third rib 312, the 4th muscle
Item 322 is incremented by multiple respectively from top to bottom；
4th wave coiling, 14 beginning is connected with 12 tail end of the second wave coiling, the third wave coiling
13 beginning is connected by Type B third connecting bridge 03b with the second rib 121a of 12 bottom of the second wave coiling；
Second wave coiling 12, third wave coiling 13, the 4th wave coiling 14 collectively forms a loop configuration,
Wherein, the beginning of the second wave coiling 12 is connected with the end of the 4th wave coiling 14, the end of third wave coiling 13
End is connected with the end of first waveform object coiling 11.This transition is uniformly transferred and is distributed convenient for power, in order to the pressure of holder
It holds and discharges.
There are several first connecting bridges 01 between each adjacent spiralization cycle of first waveform object coiling 11；First connection
The both ends connection of bridge 01 is located at the first circular arc unit 111b on different spiralization cycles；
There are multiple second connecting bridges 02 between the coiling 11 of first waveform object and the second wave coiling 12；Second connecting bridge
02 connection the first circular arc unit 111b and the second circular arc unit 121b.And one of them second connecting bridge 02 is connected to the second waveform
Second circular arc unit 121b of 12 bottom of object coiling；
Between first waveform object coiling 11 and third wave coiling 13 there is A type third connecting bridge 03a, A type thirds to connect
Meet bridge 03a connections the first circular arc unit 111b and third circular arc unit 131b.
There is the 4th connecting bridge 04, the 4th connecting bridge 04 to connect between the coiling 13 of third wave and the 4th wave coiling 14
Meet third circular arc unit 131b and the 4th circular arc unit 141b.
Second wave 121 is connect with the 5th wave 151 by multiple the 5th axially disposed connecting bridges 05, is specifically connected
It is between two opposite the second circular arc unit 121b and the 5th circular arc unit 151b to connect position.That is the second wave 121 and
It is in that wave crest arranges wave crest between five waves 151 and between the 4th wave 141 and the 6th wave 161；Wave crest is to wave
The design at peak makes rack body area both ends have good radial support power, while ensuring the transmittability of excellent power.
4th wave 141 is connect with the 6th wave 161 by multiple the 6th axially disposed connecting bridges 06, is specifically connected
It is between two opposite the 4th circular arc unit 141b and the 6th circular arc unit 161b to connect position.
First waveform object coiling 11 includes 3~4 spiralization cycles.Each spiralization cycle of first waveform object coiling 11 includes
16 first waveform objects 111；Second wave coiling 12 includes 9 the second waves 121；Third wave coiling 13 includes 6
A third wave 131；4th wave coiling 14 includes 7 the 4th waves 141；5th wave coiling 15 includes 8
5th wave 151；6th wave coiling 16 includes 8 the 6th waves 161.So holder is shorter than general to a certain extent
Logical holder.
11 helical angle of first waveform object coiling is 70 degree, can assign its good compliance and sufficient axial direction and radial support
Power；；Second wave coiling, 12 spiral angle is 78 ° -82 °；13 spiral angle of third wave coiling is 70 ° -75 °；4th
14 spiral angle of wave coiling is 75 ° -85 ° so that it has gently between both ends and central first waveform object coiling 11,
Uniform transition is convenient for the transmission of power and potential energy, holds and discharge convenient for holder pressure.
The Type B third connecting bridge 03b is connected to the 32%- of the length of the second rib 105a of the second wave coiling 12
At 40%, it is biased to 111 side of first waveform object.
First connecting bridge 01, the second connecting bridge 02, third connecting bridge 03,04 inclined direction of the 4th connecting bridge are identical.First
Connecting bridge 01, the range of tilt angles of A type third connecting bridges 03a：68°-72°；The angles of inclination Type B third connecting bridge 03b are
66°-70°；It is connected to 02 angle of inclination of the second connecting bridge of the second circular arc unit 121b of 12 bottom of the second wave coiling
Ranging from 68 ° -72 °, remaining second angle of inclination connecting bridge 02a is 55 ° -72 °；4th connecting bridge, 04 angle of inclination be 32 °-
35°.This angular displacement, the elimination of residual stress, also carries to the full extent when holder thermoplastic can be convenient for shape to the full extent
The high compliance of holder.
Any one both sides for being connected with the first circular arc unit 111b of the first connecting bridge 01 has 3-4 not connected first
First circular arc unit 111b of connecting bridge 01, this ratio distribution ensure the excellent compliance in rack body area, while one
Determine in degree, sufficient axial support.Any one second both sides circular arc unit 121b for being connected with the second connecting bridge 02 has
Second circular arc unit 121b of 3-4 not connected second connecting bridges 02；Any one is connected with the of A type third connecting bridges 03a
The both sides three-arc unit 131b have the 3-4 third circular arc unit 131b for being not connected with arbitrary connecting bridge.Any one is connected with
The circular arc unit both sides of 4th connecting bridge 04 have the circular arc units that 3-4 is not connected with arbitrary connecting bridge, with coordinate central area and
Both ends.
First rib 111a length is consistent, and makes region uniform ground；Second rib 121a length is in public affairs from top to down
Than being incremented by for the Geometric Sequence of 1-1.1；Third rib 131a length is in that the Geometric Sequence that common ratio is 1-1.15 is incremented by from top to down；
4th rib 141a length is in that the Geometric Sequence that common ratio is 1-1.2 is incremented by from top to down so that region hoop power is uniform, in proportion gradually
Strong diminuendo distribution, ensures the systematicness and stability of holder to a certain extent；5th rib 151a and the 6th rib 161a long
Degree is consistent.And the 5th rib 151a and the 6th rib 161a length it is unequal, positioned when being discharged convenient for holder, and discharge
After be not easy to slide in tube chamber.The length of any second rib 121a is longer than the first rib 111a, third rib 131a and
Four rib 141a；The width of second rib 121a is wider than the width of other ribs.
First connecting bridge, 01 length is consistent；5th connecting bridge, 05 length is in the Geometric Sequence that common ratio is 1-1.2 from top to down
It is incremented by；6th connecting bridge, 06 length is in that the Geometric Sequence that common ratio is 1-1.1 is incremented by from top to down.And shortest 5th connecting bridge 05
Length is more than the 1/4 of the 5th rib 151a length.
One first, vertical span interval connection circular arc 111b between two connecting pins of first connecting bridge 01.Together
Reason, second connecting bridge 02, between third connecting bridge 03 and two connecting pins of the 4th connecting bridge 04 vertical span interval one
A connection circular arc.
It positions 06 one end of bridge and connects developing ring 21, the other end is connected with the 6th rib 161a；The length for positioning bridge 06 is the
0.5-1 times of six rib 161a length, it is ensured that the stationarity of holder release force.The transversal maximum width of development point 211 is the
It is good to impart holder so the area of development point is big compared with the development area of normal holder for 6-7 times of six rib 161a width
It developability and is accurately positioned.
As the common knowledge of this field, the material of the development metal of 211 welding of development point includes but are not limited to gold
Metal and tantalum metal.
11 regions of such rack body first waveform object coiling are shorter, form short rack body；Multiple short holders are in lesion
Long stent is substituted in cavity, is used in series, so the very big compliance for improving the cavity after implantation holder, also less gold
Belong to contact area, so as to reduce by supporting band Lai ISR (in-stent restenosis) phenomenon, while it is long to also reduce holder
Bring the risk of holder fracture.
Claims (10)
1. a kind of flexible short holder of screw type, which is characterized in that including rack body area (1) and development positioning area (2).
Rack body area (1) by positioned at end the 5th wave coiling (15) and the 6th wave coiling (16), be located at it is described
First waveform object coiling (11) between two ends, first waveform object coiling (11), which is realized between end by transition region, to be connected
It connects, the transition region includes the second wave coiling (12), third wave coiling (13), the 4th wave coiling (14).Its
In, the 5th wave coiling (15) is connect by the second wave coiling (12) with first waveform object coiling (11), the 6th waveform
Object coiling (16) passes sequentially through the 4th wave coiling (14) and third wave coiling (13) and first waveform object coiling (11)
Connection.Each wave winding department forms coherent whole.
Positioning area (2) develop by a developing ring (21) and a positioning bridge (22), composition；Containing there are one welderings in developing ring (21)
Connect the development point (211) of development metal.
First waveform object coiling (11) is in turn connected to form helical structure, first waveform object by multiple first waveform objects (111)
(111) it is made of two the first circular arc units (111b) and two first ribs (111a)；One of them first circular arc unit
(111b) constitutes the wave crest of first waveform object (111), another constitutes the trough of first waveform object (111)；The first waveform
All first waveform objects (111) in object coiling (11) are axially presented wave crest along helical structure and arrange trough mode；First muscle
Item (111a) length is consistent；
5th wave coiling (15) is sequentially connected by multiple 5th waves (151), and the 6th wave coiling (16) is by multiple
6th wave (161) is sequentially connected, and the 5th wave coiling (15) and the 6th wave coiling (16) connection form ring junction
Structure, each 5th wave (151) is made of two the 5th ribs (151a) and two the 5th circular arc units (151b), wherein one
A 5th circular arc unit (151b) constitutes the wave crest of the 5th wave (151), another constitutes the wave of the 5th wave (151)
Paddy；5th rib (151a) length is consistent；Each 6th wave (161) is by two the 6th ribs (161a) and two
Six circular arc units (161b) form, one of them the 6th circular arc unit (161b) constitutes the wave crest of the 6th wave (161), another
The trough of a 6th wave (161)；6th rib (161a) length is consistent.
Transition region is a right angle trapezoid area, and the second wave coiling (12) is located at the top in the right-angled trapezium region；Second wave
Shape object coiling (12) is connected in sequence by multiple second waves (121), and each second wave (121) is by two the second muscle
Item (121a) and two the second circular arc unit (121b) compositions, one of them second circular arc unit (121b) constitute the second wave
(121) wave crest, another constitutes the trough of the second wave (121)；Length is in respectively second rib (121a) from top to bottom
Multiple is incremented by；
Third wave coiling (13) and the 4th wave coiling (14) are located at the lower part of the trapezoid area, third wave coiling
(13) it is connected in sequence by multiple third waves (131), third wave (131) is by two third ribs (131a) and two
A third circular arc unit (131b) is formed by connecting；4th wave coiling (14) is sequentially connected by multiple 4th waves (141)
It forms, the 4th wave (141) is formed by connecting by two the 4th ribs (141a) and two the 4th circular arc units (141b), and institute
Third rib (312), the 4th rib (322) is stated from top to bottom respectively to be incremented by multiple；
The 4th wave coiling (14) beginning is connected with second wave coiling (12) tail end, the third wave coiling
(13) the second rib (121a) phase that beginning passes through Type B third connecting bridge (03b) and second wave coiling (12) bottom
Even；
Second wave coiling (12), third wave coiling (13), the 4th wave coiling (14) collectively form a ring junction
Structure, wherein the beginning of the second wave coiling (12) is connected with the end of the 4th wave coiling (14), third wave coiling
(13) end is connected with the end of first waveform object coiling (11).
There are several first connecting bridges (01) between each adjacent spiralization cycle of first waveform object coiling (11)；First connection
The both ends connection of bridge (01) is located at the first circular arc unit (111b) on different spiralization cycles；
There are multiple second connecting bridges (02) between first waveform object coiling (11) and the second wave coiling (12)；Second connection
Bridge (02) connects the first circular arc unit (111b) and the second circular arc unit (121b).And one of them second connecting bridge (02) connects
In the second circular arc unit (121b) of second wave coiling (12) bottom；
There is A type third connecting bridges (03a), A type thirds between first waveform object coiling (11) and third wave coiling (13)
Connecting bridge (03a) connects the first circular arc unit (111b) and third circular arc unit (131b).
There is the 4th connecting bridge (04), the 4th connecting bridge between third wave coiling (13) and the 4th wave coiling (14)
(04) connection third circular arc unit (131b) and the 4th circular arc unit (141b).
Second wave (121) is connect with the 5th wave (151) by multiple the 5th axially disposed connecting bridges (05), specifically
Link position is between two opposite the second circular arc units (121b) and the 5th circular arc unit (151b).
4th wave (141) is connect with the 6th wave (161) by multiple the 6th axially disposed connecting bridges (06), specifically
Link position is between two opposite the 4th circular arc units (141b) and the 6th circular arc unit (161b).
2. screw type self-expanding stent according to claim 1, which is characterized in that first waveform object coiling (11) includes 3
~4 spiralization cycles.Each spiralization cycle of first waveform object coiling (11) includes 16 first waveform objects (111)；Second wave
Shape object coiling (12) includes 9 the second waves (121)；Third wave coiling (13) includes 6 third waves (131)；
4th wave coiling (14) includes 7 the 4th waves (141)；5th wave coiling (15) includes 8 the 5th waves
(151)；6th wave coiling (16) includes 8 the 6th waves (161).
3. screw type self-expanding stent according to claim 1, which is characterized in that the coiling of first waveform object (11) helical angle
It is 70 degree；Second wave coiling (12) spiral angle is 78 ° -82 °；The coiling of third wave (13) spiral angle be 70 °-
75°；4th wave coiling (14) spiral angle is 75 ° -85 °.
4. the flexible short holder of screw type according to claim 1, which is characterized in that the Type B third connecting bridge (03b)
It is connected at the 32%-40% of the length of the second rib (105a) of the second wave coiling (12), is biased to first waveform object
(111) side.
5. the flexible short holder of screw type according to claim 1, which is characterized in that the first connecting bridge (01), the second connection
Bridge (02), third connecting bridge (03), the 4th connecting bridge (04) inclined direction are identical.First connecting bridge (01), A type third connecting bridges
The range of tilt angles of (03a)：68°-72°；The angle of inclination Type B third connecting bridge (03b) is 66 ° -70 °；It is connected to the second wave
The second connecting bridge (02) range of tilt angles of the second circular arc unit (121b) of the coiling of shape object (12) bottom is 68 ° -72 °,
Remaining angle of inclination the second connecting bridge (02a) is 55 ° -72 °；4th connecting bridge (04) angle of inclination is 32 ° -35 °.
6. screw type self-expanding stent according to claim 1, which is characterized in that any one is connected with the first connecting bridge
(01) both sides of the first circular arc unit (111b) have the first circular arc unit of 3-4 not connected first connecting bridges (01)
(111b)；Any one second both sides circular arc unit (121b) for being connected with the second connecting bridge (02) has 3-4 not connected the
Second circular arc unit (121b) of two connecting bridges (02)；Any one is connected with the third circular arc list of A type third connecting bridges (03a)
First both sides (131b) have the 3-4 third circular arc units (131b) for being not connected with arbitrary connecting bridge.Any one is connected with the 4th
The circular arc unit both sides of connecting bridge (04) have the 3-4 circular arc units for being not connected with arbitrary connecting bridge.
7. screw type self-expanding stent according to claim 1, which is characterized in that the first rib (111a) length keeps one
It causes；Second rib (121a) length is in that the Geometric Sequence that common ratio is 1-1.1 is incremented by from top to down；Third rib (131a) length from
It is upper and lower incremental in the Geometric Sequence that common ratio is 1-1.15；4th rib (141a) length is in that common ratio is 1-1.2's from top to down
Geometric Sequence is incremented by；5th rib (151a) and the 6th rib (161a) length are consistent.And the 5th rib (151a) and
The length of six ribs (161a) is unequal.The length of any second rib (121a) is longer than the first rib (111a), third muscle
Article (131a) and the 4th rib (141a)；The width of second rib (121a) is wider than the width of other ribs.
8. screw type self-expanding stent according to claim 1, which is characterized in that the first connecting bridge (01) length is consistent；
5th connecting bridge (05) length is in that the Geometric Sequence that common ratio is 1-1.2 is incremented by from top to down；6th connecting bridge (06) length is from upper
And it is lower incremental in the Geometric Sequence that common ratio is 1-1.1.And shortest 5th connecting bridge (05) length is more than the 5th rib (151a)
The 1/4 of length.
9. screw type self-expanding stent according to claim 1, which is characterized in that two of first connecting bridge (01)
One first, vertical span interval connection circular arc (111b) between connecting pin.Similarly, second connecting bridge (02), third connection
One, vertical span interval connection circular arc between bridge (03) and two connecting pins of the 4th connecting bridge (04).
10. screw type self-expanding stent according to claim 1, which is characterized in that the length of positioning bridge (06) is the 6th
0.5-1 times of rib (161a) length.The transversal maximum width of development point (211) is 6-7 times of the 6th rib (161a) width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810566142.2A CN108670511A (en) | 2018-06-04 | 2018-06-04 | A kind of flexible short holder of screw type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810566142.2A CN108670511A (en) | 2018-06-04 | 2018-06-04 | A kind of flexible short holder of screw type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108670511A true CN108670511A (en) | 2018-10-19 |
Family
ID=63809995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810566142.2A Pending CN108670511A (en) | 2018-06-04 | 2018-06-04 | A kind of flexible short holder of screw type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108670511A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109662819A (en) * | 2019-01-31 | 2019-04-23 | 深圳市科奕顿生物医疗科技有限公司 | A kind of Self-expanded stent and its preparation method and application |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040034402A1 (en) * | 2002-07-26 | 2004-02-19 | Syntheon, Llc | Helical stent having flexible transition zone |
| US20040044401A1 (en) * | 2002-08-30 | 2004-03-04 | Bales Thomas O. | Helical stent having improved flexibility and expandability |
| CN203662949U (en) * | 2013-07-01 | 2014-06-25 | 雅伦生物科技(北京)有限公司 | Lower extremity artery blood vessel stent |
| CN105496614A (en) * | 2016-01-21 | 2016-04-20 | 浙江巴泰医疗科技有限公司 | Medical self-expanding support |
| CN106137479A (en) * | 2009-05-14 | 2016-11-23 | 奥巴斯尼茨医学公司 | There is the self-expandable stent of polygon transition region |
| CN106726039A (en) * | 2017-02-14 | 2017-05-31 | 浙江巴泰医疗科技有限公司 | A kind of open self-expanding stent of spiral |
| CN209661887U (en) * | 2018-06-04 | 2019-11-22 | 浙江巴泰医疗科技有限公司 | A kind of flexible short bracket of screw type |
-
2018
- 2018-06-04 CN CN201810566142.2A patent/CN108670511A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040034402A1 (en) * | 2002-07-26 | 2004-02-19 | Syntheon, Llc | Helical stent having flexible transition zone |
| US20040044401A1 (en) * | 2002-08-30 | 2004-03-04 | Bales Thomas O. | Helical stent having improved flexibility and expandability |
| CN106137479A (en) * | 2009-05-14 | 2016-11-23 | 奥巴斯尼茨医学公司 | There is the self-expandable stent of polygon transition region |
| CN203662949U (en) * | 2013-07-01 | 2014-06-25 | 雅伦生物科技(北京)有限公司 | Lower extremity artery blood vessel stent |
| CN105496614A (en) * | 2016-01-21 | 2016-04-20 | 浙江巴泰医疗科技有限公司 | Medical self-expanding support |
| CN106726039A (en) * | 2017-02-14 | 2017-05-31 | 浙江巴泰医疗科技有限公司 | A kind of open self-expanding stent of spiral |
| CN209661887U (en) * | 2018-06-04 | 2019-11-22 | 浙江巴泰医疗科技有限公司 | A kind of flexible short bracket of screw type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109662819A (en) * | 2019-01-31 | 2019-04-23 | 深圳市科奕顿生物医疗科技有限公司 | A kind of Self-expanded stent and its preparation method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11103371B2 (en) | Highly flexible stent and method of manufacture | |
| US10433987B2 (en) | Highly flexible stent and method of manufacture | |
| US6569193B1 (en) | Tapered self-expanding stent | |
| ES2354423T3 (en) | FLEXIBLE INTRALUMINAL CANNULA WITH IMPROVED AXIAL RESISTANCE. | |
| US8114149B2 (en) | Hybrid stent with helical connectors | |
| CN101374482B (en) | Intracavity support | |
| JP4636634B2 (en) | Intravascular stent | |
| US8721705B2 (en) | Non-foreshortening intraluminal prosthesis | |
| TW539559B (en) | Stent with optimal strength and radiopacity characteristics | |
| JPH1157015A (en) | Stent expanded by balloon which extends in longitudinal direction | |
| US20130090721A1 (en) | Highly Flexible Stent and Method of Manufacture | |
| US20150105852A1 (en) | Vascular Stent | |
| JP2009050715A (en) | Crimpable intraluminal endoprothesis having helical elements | |
| US7323007B2 (en) | Soft stent with excellent follow-up capability to blood vessel | |
| CN108670511A (en) | A kind of flexible short holder of screw type | |
| CN209661887U (en) | A kind of flexible short bracket of screw type | |
| CN112754739A (en) | Support frame | |
| US20210161693A1 (en) | Short Stent | |
| CN108371572A (en) | A kind of screw type self-expanding stent | |
| CN208864580U (en) | A kind of screw type self-expanding stent | |
| CN117045409A (en) | Coronary vessel stent | |
| Kanesaka et al. | 34. THE ZEBRA STENT |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |