CN106466694B - A kind of shaper of memory alloy stent ring and processing method for shaping - Google Patents
A kind of shaper of memory alloy stent ring and processing method for shaping Download PDFInfo
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- CN106466694B CN106466694B CN201610771743.8A CN201610771743A CN106466694B CN 106466694 B CN106466694 B CN 106466694B CN 201610771743 A CN201610771743 A CN 201610771743A CN 106466694 B CN106466694 B CN 106466694B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention belongs to technical field of medical instruments, more particularly to a kind of shaper of memory alloy stent ring suitable for memorial alloy intravascular stent and processing method for shaping.The shaper of the memory alloy stent ring, for memorial alloy sheet material to be opened as three-dimensional bracket ring by being stamped or cut out the planar bracket central shoring that mode obtains, and including：Surface is provided with the drag hook that the die main body of pin, the push rod lifted disk, connection is engaged with the screwed hole at the top of the die main body at the top of the die main body and the guide groove along the die main body surface slide, disk is lifted described in being hooked in one end of the drag hook, the push rod passes through in rotary moving, and disk is lifted described in driving and rises or declines, so as to drive the drag hook to be slided up or down along the guide groove.The present invention also provides a kind of processing method for shaping of the shaper based on the memory alloy stent ring.
Description
Technical field
The invention belongs to technical field of medical instruments, more particularly to a kind of memory suitable for memorial alloy intravascular stent to close
The shaper and processing method for shaping of golden support ring.
Background technology
Arotic disease particularly aortic aneurysm is a kind of serious threat patient vitals, the high cardiovascular injuries of fatal rate
Acute disease.According to statistics, the non-annual death rate of curer 5 is 50%~76%, and the death rate for the person that merges heart and lung diseases is up to 93%.90
Before age, surgical operation is to treat the main method of arotic disease, but this operation method wound is big, operating time
Length, complication is more, the death rate is high, and for thoracoabdominal aortic aneurysm operative mortality rate up to 5%~26%, paraplegia incidence is 4.6%.In recent years
Come, with the development of Micro trauma interventional therapeutic technique, endoluminal vascular support graft exclusion treatment arotic disease is able to widely should
Have that wound is small, bleeding is few with, this operation method, the traditional surgery such as treatment time is short, good effect, repeatability treatment
The advantages of method is incomparable.Intravascular stent is sent into diseased region using intravascular stent delivery device, made by intravascular stent
Interlayer or the blood flow of knurl intracavitary disappear, and form thrombus, hereafter gradually absorb or completely cut off lesion, to reach treatment arotic disease
Purpose.
Memorial alloy intravascular stent is softer at 0 DEG C~10 DEG C, can arbitrarily change shape, and energy side within the specific limits
Just, it is readily integrated into delivery device.By delivery device by the diseased region of stent pushing to patient, under human body temperature, blood vessel
Stent-expansion, resile, be in close contact with vascular wall, and certain radial support power is produced on vascular wall, controlled with reaching
The purpose for the treatment of.
Memorial alloy intravascular stent forms by memory alloy stent ring and overlay film, and support ring is located at mount proximal end by one
Naked frame and overlay film part some main body rack ring groups into.At present, the naked frame of in the market and support ring are by memory alloy pipes
Material forms through laser engraving or the braiding of memorial alloy silk material.The support ring of memorial alloy silk material braiding is open loop, it is necessary to use note
Recall alloy spring winding method or stainless steel tube crimping mode two heads are connected as one, exist bonding strength it is poor, shape
The problems such as property is poor, compression diameter is big；Although the support ring or naked frame formed by memorial alloy tubing laser engraving avoids above-mentioned
Problem, but memorial alloy tubing is expensive, and rapid laser carving cost is high, has raised the cost of support.
The content of the invention
In view of the above-mentioned problems, the present invention, which proposes one kind, to avoid bonding strength existing for silk material braided support ring
While low, various drawbacks such as formability is poor, compression diameter is big, and reduce material cost and processing cost, and improve plus
The shaper and processing method for shaping of the memory alloy stent ring suitable for memorial alloy intravascular stent of work efficiency rate.
A kind of shaper of memory alloy stent ring, including：Surface is provided with the die main body of pin, located at the mould
Tool body top lifts disk, the push rod that connects is engaged with the screwed hole at the top of the die main body and along the die main body table
The drag hook that the guide groove in face slides, one end of the drag hook be hooked in it is described lift disk, the push rod is by rotary moving, and band
The dynamic disk of lifting rises or declined, so as to drive the drag hook to be slided up or down along the guide groove, pin and guiding
Groove is alternates setting, and the quantity of drag hook, pin, guide groove is N, and N is the positive integer more than or equal to 2.
For memorial alloy sheet material to be strutted by being stamped or cut out the support ring that mode obtains, support ring is alternately fixed on
Between pin and drag hook.
The support ring is the circle or n sides shape of closing, and n is the even number more than or equal to 4.
It is alternate successively on n interior angle of n sides shape to be provided with n/2 hangnail, cushion block is provided with the guide groove, is led to
The inclined-plane for crossing cushion block jacks up hangnail.
The shaper is divided into taper shaper and cylindricality shaper according to the shape of the support ring.
The pin is uniformly distributed circumferentially in the cylinder or the conical surface of the die main body, and the guide groove is in the mould
Main body cylinder or the conical surface are uniformly distributed circumferentially, and N number of pin is along the circumferential direction staggered with N number of guide groove.
The drag hook is slice-shaped part, and the guiding well width of die main body described in its thickness ratio is small；The drag hook includes
Pull bar and the wedge-shaped slot for being arranged on the pull bar surface, the wedge-shaped slot on the drag hook are hooked in the wedge shape lifted on disk
Face, pull bar and the n angular n exterior angle of the drag hook hook.
The push rod from top to bottom successively include be slidably matched with the mesopore for lifting disk light bar segment, for supporting
State the boss for lifting disk and the thread segment being used cooperatively with the screwed hole on the die main body.
A kind of memory alloy stent ring processing method for shaping based on shaper described in claim 1, including following step
Suddenly：
Pass through punching press or spark cutting mode machining support ring with memorial alloy sheet material；
The support ring is set in the shaper surface, and cooperated by pin and pull bar to fix；
By drag hook drawing and die main body is spacing struts the support ring for solid and be attached at the die main body
Surface turns into preliminary three-dimensional bracket ring；
By the preliminary three-dimensional bracket ring through Overheating Treatment solid shape, three-dimensional bracket ring is finally given.
It will strut and be fixed on what the preliminary three-dimensional bracket ring on shaper was set in 400-600 degree Celsius ranges
At a temperature of heat and be incubated the time of setting, and the type of cooling is taken, so as to which support ring is shaped into three-dimensional shape.
The beneficial effects of the present invention are：The shaper and processing method for shaping of memory alloy stent ring both avoid silk
The shortcomings of bonding strength existing for material braided support ring is low, formability is poor, compression diameter is big, while with being swashed with memorial alloy tubing
Light carves naked frame and support ring is compared, and reduces material cost and processing cost, improves processing efficiency.
Moreover, memory alloy stent ring is processed by punching press or spark cutting mode with memorial alloy sheet material, it is such to add
Work mode is simple, and processing cost is low, high in machining efficiency.Memorial alloy sheet material is readily available compared with tubing, and the cost of material is low.Passing through will
The planar bracket ring of different dimensions is arranged, and can greatly improve stock utilization.
Brief description of the drawings
Fig. 1 is not barbed five angle planes support ring schematic diagram in the present invention.
Fig. 2 is barbed five angle planes support ring schematic diagram in the present invention.
Fig. 3 is not barbed circular flat support ring schematic diagram in the present invention.
Fig. 4 a are conical stent ring sizing taper shaper schematic diagram in the present invention.
Fig. 4 b are cylindrical stent ring sizing cylindricality shaper schematic diagram in the present invention.
Fig. 5 a are that the die main body of shaper in the present invention is the structural representation of taper die main body.
Fig. 5 b are that the die main body of shaper in the present invention is the structural representation of cylindrical mold main body.
Fig. 6 is the drag hook schematic diagram of shaper in the present invention.
Fig. 7 is the push rod schematic diagram of shaper in the present invention.
Fig. 8 is that shaper lifts disk schematic diagram in the present invention.
Fig. 9 is the cushion block schematic diagram of shaper in the present invention.
Figure 10 a are cylindrical stent ring sizing schematic diagram in the present invention.
Figure 10 b are conical stent ring sizing schematic diagram in the present invention.
Figure 11 a are finished product schematic diagram of the cylinder without hangnail support ring in the present invention.
Figure 11 b are finished product schematic diagram of the cone with hangnail support ring in the present invention.
Figure 12 is that midplane support ring of the present invention processes arrangement schematic diagram.
Embodiment
Below in conjunction with the accompanying drawings, embodiment is elaborated.
The shaper of memory alloy stent ring provided in an embodiment of the present invention is used to memorial alloy sheet material passing through punching press
Or the planar bracket central shoring that cutting mode obtains is opened as three-dimensional bracket ring.Wherein, the memorial alloy sheet material is run after fame adopted composition
54.5wt%-57.0wt%Ni NiTi memorial alloys, and the memorial alloy sheet material can be that rectangle can also be circular, thickness
Spend for 0.1mm-2mm.In the present embodiment, the memorial alloy sheet material can be forged by memorial alloy ingot casting, be rolling,
Also can be obtained by memorial alloy bar perpendicular to axially cutting.
Moreover, such as：Shown in Fig. 1, Fig. 2 and Fig. 3, the planar bracket ring is the circle of closing, pentagon, hexagon, seven
Angular, octagonal, nonagon, regular decagon, undecagon, dodecagon.The planar bracket ring can be with hangnail also without
Thorn, and the angular planar bracket rings of N have N number of exterior angle 19 and N number of interior angle 20, wherein, N is positive integer.In the present embodiment
In, the planar bracket ring can be by obtaining to memorial alloy sheet material progress punching press or spark cutting mode.
Accordingly, as shown in figures 4 a and 4b, the shaper of the memory alloy stent ring is according to the shape of support ring
Shape is divided into taper shaper and cylindricality shaper；And the shaper of the memory alloy stent ring can be according to described flat
The head number of face support ring be divided into five shapers, six shapers, seven shapers, eight shapers, nine it is fixed
Pattern tool, ten shapers, 11 shapers or 12 shapers.
Moreover, the shaper of the memory alloy stent ring can be with the support ring height of patterning process for 5-50mm, cone
Degree α is 0-60 degree, and diameter (conical support fourth finger end diameter) is 5-50mm.
In the present embodiment, as shown in figures 4 a and 4b, the shaper of the memory alloy stent ring is set including surface
The die main body 1 for being equipped with pin, the drag hook 2 slided along the guide groove 6 on the surface of die main body 1, push up with the die main body 1
The push rod 3 of the screwed hole engagement connection in portion, lifting disk 4 and be used cooperatively with the drag hook 2 located at the top of the die main body 1
Cushion block 10.Disk 4 is lifted in one end of the drag hook 2 described in being hooked in, and the push rod 3 drives the support by rotary moving
Lift disk 4 to rise or decline, so as to drive guide groove 6 of the drag hook 2 along the surface of die main body 1 to slide up or down.
As shown in figure 5 a and 5b, the die main body 1 divides for taper die main body and cylindrical mold main body, above has N number of
Pin 5, N number of guide groove 6 and a screwed hole 7.Pin quantity is identical with the support take capel number shaped with guide groove quantity,
All pins 5 are uniformly distributed circumferentially in the cylinder of die main body 1 or the conical surface, and all guide grooves 6 are in the cylinder of die main body 1 or the conical surface
It is uniformly distributed circumferentially, and pin 5 is along the circumferential direction staggered with guide groove 6, N number of pin 5 and the plane branch angular N
N number of interior angle of frame ring hooks.
As shown in fig. 6, the drag hook 2 is slice-shaped part, the width of guide groove 6 of its thickness ratio die main body is smaller, can
Along guide groove slidably.Drag hook includes pull bar 8 and is arranged on the surface wedge-shaped slot 9 of pull bar 8.Wedge-shaped slot 9, which is hooked in, to be lifted
On lozenges 18 on disk 4；N number of exterior angle of the pull bar 8 of N number of drag hook 2 and the planar bracket ring angular N hooks.
As shown in fig. 7, the push rod 3 include be slidably matched with the mesopore for lifting disk 4 light bar segment 14, for supporting
The boss 15 for lifting disk 4 and the thread segment 16 being used cooperatively with the screwed hole 7 on the die main body 1.
As shown in figure 8, the disk 4 of lifting is made up of the ring-type lozenges 18 of periphery and the mesopore at middle part, mesopore and push rod 3
On light bar segment 14 be slidably matched.
As shown in figure 9, the cushion block 10 is wedge metal piece, the width of guide groove 6 of die main body 1 described in its thickness ratio omits
It is small, can be along guide groove 6 slidably；Its ramp is used to support ring hangnail is propped up into required angle when support ring is shaped；Thereon
A groove 11 is tied up, for the pull bar 8 of cushion block and the drag hook 2 being bound by tying up silk.
As as-shown-in figures 10 a and 10b, using the memory alloy stent ring with shaper by the planar bracket ring
Strut as solid, refer to hang on all interior angles 20 of planar bracket ring on the pin 5 of die main body 1, by all exterior angles 19
Hang on the pull bar 8 of the lower end of drag hook 2；Drag hook 2 is embedded in the guide groove 6 of die main body 1, and can be glided along guide groove
Dynamic, the wedge-shaped slot 9 of the upper end of drag hook 2 is taken on the lozenges 18 for being placed on and lifting disk 4；Disk 4 is lifted to be placed in the light bar segment 14 of push rod 3 simultaneously
Held by the boss 15 on push rod, can be along light bar segment relative to slip, rotation；The thread segment 16 of push rod 3 is threaded onto the spiral shell of die main body 1
In pit 7.
Rotate counterclockwise push rod 3, boss 15 drive and lift disk 4 and rise, because of drag hook 2 by the lodge of wedge-shaped slot 9 in lifting on disk,
Therefore lift disk and drive drag hook to rise along guide groove 6, drag hook pulls planar bracket ring exterior angle 19 along die main body by its upper connecting rod 8
The conical surface or cylinder rise；Because planar bracket ring interior angle hang on it is immovable on the pin 5 of die main body 1, so that with push rod 3
Rise, planar bracket ring, which is finally tightened up and fitted in, turns into three-dimensional bracket ring on the conical surface or cylinder of die main body 1.If support ring
There is hangnail 17, then also need cushion block 8 being embedded in the guide groove 6 of body die 1, and rely on its inclined-plane by support ring hangnail top
Rise, hangnail jacks up the angle that angle depends on cushion block inclined-plane.
Moreover, in embodiments of the present invention, as shown in Figure 10 a, Figure 10 b, Figure 11 a and Figure 11 b, processing support ring can be with
For cylindrical stent ring, or conical stent ring；Both can be with hangnail 17, also can be without hangnail.
A kind of processing method for shaping of the shaper of the memory alloy stent ring according to Fig. 1 specifically includes following step
Suddenly：
Planar bracket ring is processed by punching press or spark cutting mode with memorial alloy sheet material；
The planar bracket ring set is located at the shaper surface, and cooperated by pin and pull bar to fix
The planar bracket ring；
By drag hook drawing and die main body is spacing opens the planar bracket central shoring for solid and be attached at the mould
Body surfaces turn into preliminary three-dimensional bracket ring；
By the preliminary three-dimensional bracket ring through Overheating Treatment solid shape, three-dimensional bracket ring is finally given.
It should be noted that in heat treatment process, it will strut and be fixed on the preliminary three-dimensional bracket on shaper
Heated under the suitable temperature that ring is set in the range of 400-600 degree and be incubated the time of setting, and take the appropriate type of cooling,
So as to which support ring is shaped into three-dimensional shape.
Compared to prior art, the shaper and processing method for shaping of memory alloy stent ring provided by the invention were both kept away
Exempted from the shortcomings of bonding strength existing for silk material braided support ring is low, formability is poor, compression diameter is big, at the same with memorial alloy
The naked frame of tubing laser engraving and support ring are compared, and are reduced material cost and processing cost, are improved processing efficiency.
Moreover, memory alloy stent ring is processed by punching press or spark cutting mode with memorial alloy sheet material, it is such to add
Work mode is simple, and processing cost is low, high in machining efficiency.Memorial alloy sheet material is readily available compared with tubing, and the cost of material is low.Passing through will
The planar bracket ring of different dimensions is arranged, and can greatly improve stock utilization, as shown in figure 12.
This embodiment is only the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (10)
- A kind of 1. shaper of memory alloy stent ring, it is characterised in that including：Surface be provided with pin die main body, The push rod lifted disk, connection is engaged with the screwed hole at the top of the die main body at the top of the die main body and along described The drag hook that the guide groove on die main body surface slides, one end of the drag hook be hung on it is described lift disk, the push rod passes through rotation It is mobile, and disk is lifted described in drive and rises or declines, so as to drive the drag hook to be slided up or down along the guide groove, pin Nail and guide groove is alternate setting, and the quantity of drag hook, pin, guide groove is N, and N is just whole more than or equal to 2 Number.
- 2. the shaper of memory alloy stent ring according to claim 1, it is characterised in that for by memorial alloy sheet material The support ring obtained by being stamped or cut out mode is strutted, and support ring is alternately fixed between pin and drag hook.
- 3. the shaper of memory alloy stent ring according to claim 2, it is characterised in that the support ring is closing Circular or n sides shape, and n is the even number more than or equal to 4.
- 4. the shaper of memory alloy stent ring according to claim 3, it is characterised in that n interior angle of n sides shape On it is alternate successively be provided with n/2 hangnail, be provided with cushion block in the guide groove, jacked up hangnail by the inclined-plane of cushion block.
- 5. the shaper of the memory alloy stent ring according to claim 1 or 2 or 3 or 4, it is characterised in that described fixed Pattern tool is divided into taper shaper and cylindricality shaper according to the shape of the support ring.
- 6. the shaper of memory alloy stent ring according to claim 1, it is characterised in that the pin is in the mould The cylinder or the conical surface for having main body are uniformly distributed circumferentially, and the guide groove is circumferentially uniform in the die main body cylinder or the conical surface Distribution, and N number of pin is along the circumferential direction staggered with N number of guide groove.
- 7. the shaper of memory alloy stent ring according to claim 3, it is characterised in that the drag hook is slice-shaped Part, the guiding well width of die main body described in its thickness ratio are small；The drag hook includes pull bar and is arranged on the pull bar surface Wedge-shaped slot, the wedge-shaped slot on the drag hook is hung on the lozenges lifted on disk, the pull bar of the drag hook and the n of n sides shape Individual exterior angle hooks.
- 8. the shaper of memory alloy stent ring according to claim 1, it is characterised in that the push rod is from top to bottom The light bar segment that includes being slidably matched with the mesopore for lifting disk successively, for support the boss for lifting disk and with the mould The thread segment that screwed hole in tool main body is used cooperatively.
- A kind of 9. memory alloy stent ring processing method for shaping based on shaper described in claim 1, it is characterised in that bag Include following steps：Pass through punching press or spark cutting mode machining support ring with memorial alloy sheet material；The support ring is set in the shaper surface, and cooperated by pin and pull bar to fix；By drag hook drawing and die main body is spacing struts the support ring for solid and be attached at the die main body surface As preliminary three-dimensional bracket ring；By the preliminary three-dimensional bracket ring through Overheating Treatment solid shape, three-dimensional bracket ring is finally given.
- 10. method for shaping is processed according to claim 9, it is characterised in that will strut and be fixed on first on shaper The three-dimensional bracket ring of step heats at a temperature of being set in 400-600 degree Celsius ranges and is incubated the time of setting, and takes cold But mode, so as to which support ring is shaped into three-dimensional shape.
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| CN201610771743.8A CN106466694B (en) | 2016-08-30 | 2016-08-30 | A kind of shaper of memory alloy stent ring and processing method for shaping |
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| CN201610771743.8A CN106466694B (en) | 2016-08-30 | 2016-08-30 | A kind of shaper of memory alloy stent ring and processing method for shaping |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109124822B (en) * | 2018-06-25 | 2021-07-16 | 上海理工大学 | Pre-bending and shaping mold for thoracic aorta stent ring |
| CN108624747B (en) * | 2018-06-28 | 2024-03-26 | 上海理工大学 | Aortic stent ring shaping die |
| CN110193552B (en) * | 2019-04-15 | 2020-08-14 | 四川大学 | A diameter expansion device for shape memory alloy fastening ring |
| WO2023046301A1 (en) * | 2021-09-27 | 2023-03-30 | Angiomed Gmbh & Co.Medizintechnik Kg | Implant and method of making an implant |
| CN116586526B (en) * | 2023-07-13 | 2023-10-03 | 上海威高医疗技术发展有限公司 | Tooling fixture for heat setting of alloy bracket and application method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1011889B1 (en) * | 1996-01-30 | 2002-10-30 | Medtronic, Inc. | Articles for and methods of making stents |
| CN101969883B (en) * | 2007-12-26 | 2014-07-30 | 梅德学会公司 | Stent and method of making a stent |
| WO2013155474A1 (en) * | 2012-04-12 | 2013-10-17 | California Institute Of Technology | Percutaneous heart valve delivery systems |
| CN104644295B (en) * | 2014-12-19 | 2019-07-16 | 上海百心安生物技术有限公司 | A kind of absorbable lumen stent and preparation method thereof |
| DE102015100932A1 (en) * | 2015-01-22 | 2016-07-28 | Aesculap Ag | Stent retractor / distractor |
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Effective date of registration: 20200824 Address after: 102200, Changping District, Beijing, super Road, No. 33 Co-patentee after: GRINM MEDICAL INSTRUMENT (BEIJING) Co.,Ltd. Patentee after: Beijing Youzhuo Zhenglian Medical Technology Co., Ltd Address before: 102200, Beijing Changping District science and Technology Park, super Road, No. 33 Patentee before: GRINM MEDICAL INSTRUMENT (BEIJING) Co.,Ltd. |
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Effective date of registration: 20210105 Address after: 102200 room 01, 2 / F, building 1, No. 33, Chaoqian Road, science and Technology Park, Changping District, Beijing Patentee after: Beijing Youzhuo Zhenglian Medical Technology Co., Ltd Address before: No.33 Chaoqian Road, Changping District, Beijing 102200 Patentee before: Beijing Youzhuo Zhenglian Medical Technology Co., Ltd Patentee before: GRINM MEDICAL INSTRUMENT (BEIJING) Co.,Ltd. |