CN107900535B - A kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method - Google Patents
A kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method Download PDFInfo
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- CN107900535B CN107900535B CN201711308766.6A CN201711308766A CN107900535B CN 107900535 B CN107900535 B CN 107900535B CN 201711308766 A CN201711308766 A CN 201711308766A CN 107900535 B CN107900535 B CN 107900535B
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- Prior art keywords
- fixed column
- cutting
- nickel
- titanium alloy
- cutting head
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
Abstract
The invention discloses a kind of Nickel-titanium alloy for medical purpose intravascular stent cutting methods, by X to mobile laser cutting head, drive the rotation of Nitinol pipe by rotary electric machine, realize the cutting to intravascular stent.A kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method of the present invention on Nitinol pipe by being directly cut by laser, one-pass molding becomes required supporting structure, reduce the error occurred during braiding, manufacture efficiency is promoted simultaneously, and avoids passing through the jitter error that rotation laser cutting head occurs.
Description
Technical field
The present invention relates to medical instruments field more particularly to a kind of Nickel-titanium alloy for medical purpose intravascular stent cutting methods.
Background technique
Intravascular stent refers to that on the basis of the forming of lumen balloon expandable, it is narrow to reach support to be placed in inner support in lesion
Narrow occlusion section blood vessel reduces blood vessel elasticity retraction and moulding again, the purpose for keeping lumen blood flow unobstructed.Part inner support also has
The effect of pre- anti-restenosis.Traditional intravascular stent is made by the way of braiding, in fact it could happen that production is unstable,
The low situation of yield rate.
Summary of the invention
The object of the invention is that providing a kind of Nickel-titanium alloy for medical purpose intravascular stent cutting to solve the above-mentioned problems
Method.
The present invention through the following technical solutions to achieve the above objectives:
A kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method, comprising the following steps:
S1, total stent length and internal diameter are determined, chooses Nitinol pipe；
The position of two Movable clamps of S2, movable cutting machine, so that two fixtures are separately positioned on Nitinol pipe
Both ends；
S3, fixed column is placed in liquid nitrogen, is allowed to cool diameter diminution；
S4, fixed column is passed through into the Nitinol pipe, and the both ends of fixed column are fixed by fixture；
S5, room temperature pass through hot air fixed column, increase to fixed column diameter equal with Nitinol bore；
S6, the fixed frame of laser cutting head is moved to above the position to be cut of Nitinol pipe, and fixed frame
With the axis parallel of Nitinol pipe, laser cutting head is connect to mobile motor with fixed frame by X；
S7, X are moved axially to mobile motor control laser cutting head along Nitinol pipe, and laser cutting head at the uniform velocity X is to shifting
Dynamic, in position to be cut, the Nitinol pipe being disposed below is cut in laser cutting head work, is completed single
Cut stroke；
S8, after completing single cutting formation, suspend movement of the X to mobile motor, control fixed column drives Nitinol pipe
It turns an angle；
After S9, rotation, control X is mobile to mobile motor reverse phase, so that laser cutting head completes reverse phase and cuts stroke；
S10, step S7~S9 is repeated, completes the cutting of entire bracket；
S11, fixed column is dismantled from fixture, and removes the bracket after the completion of cutting.
Specifically, the structure in above-mentioned steps S8 is that one of fixture is rotatably connected by bearing and cutting machine, separately
The torque output shaft of one fixture and rotary electric machine interlocks, and drives fixed column that Nitinol pipe interval is driven to turn by rotary electric machine
It is dynamic.
Preferably, the arc of rotation of the Nitinol pipe is failed to grow up in the cutting width of laser cutting head.
The beneficial effects of the present invention are:
A kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method of the present invention on Nitinol pipe by directly carrying out laser
Cutting, one-pass molding become required supporting structure, reduce the error occurred during braiding, while promoting manufacture efficiency,
And avoid passing through the jitter error that rotation laser cutting head occurs.
Specific embodiment
The present invention is explained below:
A kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method of the present invention, including determine total stent length and internal diameter, it chooses
Nitinol pipe；The position of two Movable clamps of movable cutting machine, so that two fixtures are separately positioned on Nitinol pipe
Both ends；Fixed column is placed in liquid nitrogen, diameter diminution is allowed to cool；Fixed column is passed through into the Nitinol pipe, and fixed column
Both ends fixed by fixture；Room temperature passes through hot air fixed column, increases to fixed column diameter and Nitinol pipe
Internal diameter is equal；The fixed frame of laser cutting head is moved to above the position to be cut of Nitinol pipe, and fixed frame with
The axis parallel of Nitinol pipe, laser cutting head are connect to mobile motor with fixed frame by X；X is controlled to mobile motor
Laser cutting head is moved axially along Nitinol pipe, and laser cutting head at the uniform velocity X is to movement, and in position to be cut, laser is cut
Head work is cut, the Nitinol pipe being disposed below is cut, completes single cutting stroke；Single cutting is completed to be formed
Afterwards, suspend movement of the X to mobile motor, control fixed column drives Nitinol pipe to turn an angle；After rotation, control
X is mobile to mobile motor reverse phase, so that laser cutting head completes reverse phase and cuts stroke；It is repeatedly performed the cutting of entire bracket；It will
Fixed column is dismantled from fixture, and removes the bracket after the completion of cutting.
One of fixture is rotatably connected by bearing and cutting machine, the torque output of another fixture and rotary electric machine
Axis interlocks, and drives fixed column to drive Nitinol pipe intermittent rotary by rotary electric machine, the arc of rotation of Nitinol pipe is childlike
In the cutting width of laser cutting head.
The limitation that technical solution of the present invention is not limited to the above specific embodiments, it is all to do according to the technique and scheme of the present invention
Technology deformation out, all belong to the scope of protection of the present invention within.
Claims (3)
1. a kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method, which comprises the following steps:
S1, total stent length and internal diameter are determined, chooses Nitinol pipe；
The position of two Movable clamps of S2, movable cutting machine, so that two fixtures are separately positioned on the two of Nitinol pipe
End；
S3, fixed column is placed in liquid nitrogen, is allowed to cool diameter diminution；
S4, fixed column is passed through into the Nitinol pipe, and the both ends of fixed column are fixed by fixture；
S5, room temperature pass through hot air fixed column, increase to fixed column diameter equal with Nitinol bore；
S6, the fixed frame of laser cutting head is moved to above the position to be cut of Nitinol pipe, and fixed frame and nickel
The axis parallel of titanium alloy tube, laser cutting head are connect to mobile motor with fixed frame by X；
S7, X are moved axially to mobile motor control laser cutting head along Nitinol pipe, laser cutting head at the uniform velocity X to movement,
Position to be cut, laser cutting head work, cuts the Nitinol pipe being disposed below, and completes single cutting row
Journey；
S8, after completing single cutting stroke, suspend movement of the X to mobile motor, control fixed column drives the rotation of Nitinol pipe
Certain angle；
After S9, rotation, control X is mobile to mobile motor reverse phase, so that laser cutting head completes reverse phase and cuts stroke；
S10, step S7~S9 is repeated, completes the cutting of entire bracket；
S11, fixed column is dismantled from fixture, and removes the bracket after the completion of cutting.
2. a kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method according to claim 1, it is characterised in that: above-mentioned steps
Structure in S8 is that one of fixture is rotatably connected by bearing and cutting machine, turn of another fixture and rotary electric machine
Square output shaft interlocks, and drives fixed column to drive Nitinol pipe intermittent rotary by rotary electric machine.
3. a kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method according to claim 2, it is characterised in that: the NiTi
The arc of rotation of compo pipe is failed to grow up in the cutting width of laser cutting head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711308766.6A CN107900535B (en) | 2017-12-11 | 2017-12-11 | A kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711308766.6A CN107900535B (en) | 2017-12-11 | 2017-12-11 | A kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107900535A CN107900535A (en) | 2018-04-13 |
| CN107900535B true CN107900535B (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711308766.6A Active CN107900535B (en) | 2017-12-11 | 2017-12-11 | A kind of Nickel-titanium alloy for medical purpose intravascular stent cutting method |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2416569A (en) * | 2004-07-27 | 2006-02-01 | Clarke Uk Ltd | Method of and a pump for pumping drill cuttings |
| CN102233486A (en) * | 2010-05-05 | 2011-11-09 | 茂名学院 | Method for cutting cardiovascular stent by using laser |
| CN103212866B (en) * | 2012-01-19 | 2016-01-27 | 昆山思拓机器有限公司 | A kind of femtosecond laser of Laser Processing intravascular stent |
| CN103212882B (en) * | 2012-01-19 | 2015-08-26 | 昆山思拓机器有限公司 | A kind of support pipe clamping coaxiality adjusting method |
| DE102012017130B4 (en) * | 2012-09-01 | 2016-06-16 | Man Diesel & Turbo Se | Laser Rohreinschweißen |
| CN103537814A (en) * | 2013-10-18 | 2014-01-29 | 昆山思拓机器有限公司 | Support and guide device for nonmetal rack processing |
| GB2521424A (en) * | 2013-12-19 | 2015-06-24 | Antonio Keating | HeliBloc |
| CN104772566A (en) * | 2014-01-10 | 2015-07-15 | 宝山钢铁股份有限公司 | Processing method for non-uniform thickness welded pipe |
| CN105234564B (en) * | 2015-11-13 | 2016-09-14 | 山东吉威医疗制品有限公司 | A kind of cutting method saving angiocarpy bracket tubing tailing |
| CN106137483B (en) * | 2016-07-21 | 2018-10-02 | 成都嘉宝祥生物科技有限公司 | A kind of coronary vessel stent production method |
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2017
- 2017-12-11 CN CN201711308766.6A patent/CN107900535B/en active Active
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| CN107900535A (en) | 2018-04-13 |
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