CN203304128U - Endovascular stent coating preparation device - Google Patents
Endovascular stent coating preparation device Download PDFInfo
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- CN203304128U CN203304128U CN2013203637173U CN201320363717U CN203304128U CN 203304128 U CN203304128 U CN 203304128U CN 2013203637173 U CN2013203637173 U CN 2013203637173U CN 201320363717 U CN201320363717 U CN 201320363717U CN 203304128 U CN203304128 U CN 203304128U
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Abstract
The utility model relates to the technical field of medical treatment equipment, and discloses an endovascular stent coating preparation device. The endovascular stent coating preparation device comprises an ultrasonic atomization spraying device and an endovascular stent spraying operation table which are arranged oppositely; the endovascular stent spraying operation table comprises a motor, a servo driver and an automatic control system; an output shaft of the motor is connected with an endovascular stent in a drive mode; a control output end of the servo driver is electrically connected with a control input end of the motor; a control input end of the servo driver is electrically connected with the control output end of the automatic control system. According to the endovascular stent coating preparation device, the motor is controlled by the servo driver through the automatic control system, the rotation of an endovascular stent workpiece and the moving of the endovascular stent workpiece on a processing path can be regulated and controlled accurately, and the rotation speed and the moving speed of a stent can be controlled through commands; According to the further technical scheme, the atomization flow state can be optimized; the atomized granule flying situation can be improved; the equipment and environment pollution is relieved effectively; meanwhile the processing efficiency is improved.
Description
Technical field
The utility model relates to Medical Devices manufacturing technology field, particularly a kind of endovascular stent coating preparation facilities.
Background technology
The current drug stent of listing, utilize various technology by one or more these type of polymer-coated in rack surface to reach good functional coat.The difficult point of coating technology is how at so little and baroque rack surface, the coating amount to be controlled and to guarantee good surface nature.Traditional coating preparation method comprises: dip-coating, spraying, chemical deposition etc.The dip-coating technology is that support is immersed in polymer or polymer-drug solution, then by drying, obtains layer, homogeneous and continuous coating.Spraying technology is to adopt different spraying equipments that the droplet of polymer or polymer-medicine mixed solution is sprayed directly into to rack surface, utilizes spraying process can prepare very thin polymer coating.Chemical deposition technique is by electroplating, and the electrochemical means such as spatial induction mineralising make polymer form coating in the rack surface deposition.
Although in bracket coating preparation, said method has all obtained good application, along with to the improving constantly of coating quality and security requirement, their deficiencies separately also highlight gradually.Dip coating technique is simple, and the coating of preparation is firm and process and to be convenient to regulate, but for the equipment of geometry complexity converge (Pooling) or condense (Drips) inevitable.Traditional spraying technology, in the coating layer thickness homogeneity, has certain superiority in the modification of minimizing Pooling and Drips phenomenon and coating, but control mode is comparatively complicated, therefore the coating preparation efficiency is not high, and there be expending of excessive coating in preparation process.When chemical deposition prepares the certain material coating, show well, but, because its requirement to coating and timbering material is too strict, lack applicability widely.
In addition, during from coating apparatus, being coated to the support process, concentration changes due to drug concentration, can not control accurately and guarantee drug concentration and coated weight; Can not preset drug distribution and reach more medicine loading demand; Can not control drug distribution density; Zone that can not be different on support applies different medicament effective component etc., and being all needs the difficult problem overcome in the preparation of conventional art coating.
For industrialization support spraying technology, usually requiring the coating solution flow rates is 20-100 μ l/min, the spraying diameter range is 0.5-2mm, and the spraying liquid-drop diameter reaches μ m level, and ultrasonic atomization technology is a kind of New-support coat preparing technology that reaches this requirement.The ultrasonic atomizatio principle is that the ultrasonic wave that utilizes the ultrasonic atomizatio transducer to produce is propagated by atomizing medium, at the gas-liquid interface place, form surperficial Zhang Libo, because ultrasonic cavitation makes the fluid molecule active force, destroy, from liquid surface, deviate to form droplet, thereby liquid is atomized as aerosol state.High-pressure inert gas via the carrier gas module is sprayed at rack surface again, forms polymer coating.The defects such as ultrasound atomization system has overcome conventional spray paint technology gas-liquid systems in the bracket coating preparation and has been difficult to accurate control, and liquid grain size is uncontrollable, and coating procedure lacks flexibility, and coating consumption is large are current a kind of bracket coating technologies of preparing that has potentiality.
Although existing ultrasonic atomizatio spray equipment can be processed to prepare and meet necessarily required endovascular stent coating.But, at experimental study chronically with in using, still expose its some obvious defects:
1. the spraying fluid flow is wayward.Because the magnetic floation switch of throw-in type ultrasonic atomizer is installed on ultrasonic atomizatio sheet top, make carrier fluid vessel bottom not keep optimum distance with atomizing piece, make the coating atomizing effect undesirable.In order to reach materialization effect preferably, usually need to be by carrier fluid vessel slant setting, to reduce and the atomizing piece spacing.The droplet size that this makes each spraying use, atomization quantity are difficult to guarantee unified, cause the coating process design inaccurate;
2. the radial and axial speed of support is uncontrollable.Because the netted structural form of support is different, and material is not quite similar, and in the unit spray time, the droplet amount be deposited on scaffolding thread is also different.If carry out coating processing with a specific radial and axial speed, certainly will cause the probability of happening of the common invalidation such as aggegation, wire drawing to rise, greatly limited the applicability of device.
3. the spray pollution of dispersing and causing.The pressure-air spraying needs the gas pressure of 241.3 * 103-551.6 * 103Pa usually, and this high pressure gas fails to be convened for lack of a quorum and forms explosion air-flow destruction coating, and what therefore device was used is the following low-pressure air current of 10Psi.But low pressure can cause serious spray to disperse, and very easily is subjected to such environmental effects.Coating often contains some with corrosivity, irritant smell, the solvent of toxic side effect even in addition, and long-term work will cause serious equipment and environmental pollution.
The utility model content
In view of this, the utility model provides a kind of support to control the stronger endovascular stent coating preparation facilities of adaptability.
The utility model solves the problems of the technologies described above by following technological means:
Endovascular stent coating preparation facilities, comprise the ultrasonic atomizatio spray equipment and the endovascular stent spraying operating desk that are oppositely arranged, described endovascular stent spraying operating desk comprises motor, servo-driver and automatic control system, the output shaft of described motor is for being in transmission connection with endovascular stent, the control output end of described servo-driver and the control input end of motor electrically connect, and the control input end of described servo-driver and the control output end of automatic control system electrically connect.
Further, described motor is hollow-cup motor.
Further, on the output shaft of motor, also be provided be used to holding the semiclosed cover of endovascular stent, the opening of described semiclosed cover in the horizontal direction.
Further, described ultrasonic atomizatio spray equipment comprises gas cylinder, carrier fluid bottle, tank, shower nozzle and ultrasonic atomization assembly, described gas cylinder is communicated in carrier fluid bottle liquid level top by wireway, described carrier fluid bottle top has the pipeline be communicated with shower nozzle, described carrier fluid bottle is dipped under the liquid level of tank at least partly, and the ultrasonic atomization assembly is arranged at the position that bottom of gullet is relative with the carrier fluid bottle.
Further, the control output end of the control input end of described ultrasonic atomizatio assembly and automatic control system electrically connects.
Further, on described wireway, be disposed with decompressor and filter along outgassing direction.
Further, described decompressor comprises the double reductor set gradually.
Endovascular stent coating preparation facilities of the present utility model, by automatic control system, via servo-driver, motor is controlled, can realize rotation and the movement on machining path of endovascular stent workpiece are carried out to accurate regulation and control, can use instruction to control support rotation speed and translational speed; In further technical scheme, the use hollow-cup motor, starting, braking rapidly, respond soon, and stable, the fluctuation of speed is little, can carry out sensitive adjusting and can control, and improves running precision, and the hollow-cup motor energy conversion efficiency is higher simultaneously; Semiclosed cover is set, can be optimized the spray state, improve the droplet situation of dispersing, effectively alleviate equipment and environmental pollution, improve simultaneously working (machining) efficiency.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is the structural representation of the utility model endovascular stent coating preparation facilities.
The specific embodiment
Below with reference to accompanying drawing, the utility model is elaborated.
As shown in Figure 1, the endovascular stent coating preparation facilities of the present embodiment, comprise the ultrasonic atomizatio spray equipment and the endovascular stent spraying operating desk that are oppositely arranged, described endovascular stent spraying operating desk comprises motor 9, servo-driver 10 and automatic control system 14, on the output shaft of motor 9, also be provided be used to holding the semiclosed cover 15 of endovascular stent 8, the opening of described semiclosed cover 15 in the horizontal direction, described endovascular stent 8 is arranged in semiclosed cover 15, and be in transmission connection with the output shaft of motor 9, the control input end of the control output end of described servo-driver 10 and motor 9 electrically connects, the control output end of the control input end of described servo-driver 10 and automatic control system 14 electrically connects.Described motor 9 is preferably hollow-cup motor.Automatic control system 14 is single-chip microcomputer.
Described ultrasonic atomizatio spray equipment comprises gas cylinder 1, carrier fluid bottle 6, tank 13, shower nozzle 7 and ultrasonic atomization assembly 12, described gas cylinder 1 is communicated in carrier fluid bottle 6 liquid level tops by wireway 5, on described wireway 5, be disposed with double reductor 2,3 and filter 4 along outgassing direction, described carrier fluid bottle 6 tops have the pipeline 11 be communicated with shower nozzle 7, the injection direction of shower nozzle 7 is horizontal direction, described carrier fluid bottle 6 is dipped under the liquid level of tank 13 at least partly, and ultrasonic atomization assembly 12 is arranged at the position relative with carrier fluid bottle 6, tank 13 bottoms.The control output end of the control input end of described ultrasonic atomizatio assembly 12 and automatic control system 14 electrically connects.Described automatic control system 14 can be selected single-chip computer control system or PC.
When work, the high pressure nitrogen in gas cylinder 1 reduces pressure by double reductor 2,3, and is mingled with moisture in filter 4 elimination gases, is passed in carrier fluid bottle 6 by wireway 5.Ultrasonic atomization assembly 12 radiation high-frequency ultrasonics, make the coating in carrier fluid bottle 6 form the atomization fountain, forms aerosol with the bottle Air.The nitrogen passed into by wireway carries aerosol with a steady pressure, by shower nozzle 7 ejections.By servo-driver 10, controlled 9 running statuses of hollow-cup motor, make endovascular stent 8 in air-flow, carry out the regular movement that can set, semiclosed cover 15 has improved the situation of dispersing of droplet, the atomizing particle carried in air-flow contacts with scaffolding thread, be deposited on scaffolding thread and form liquid film, drying is processed and is obtained required coating structure.Select the ultrasonic atomizatio assembly as the atomization transduction assembly; change traditional throw-in type ultrasonic atomizer in the use; the medicine carrying vessel that anhydrous protector causes and ultrasonic atomizatio sheet can't good location etc. problem, can realize that atomizing effect is steady, mist particle diameter such as reduces at the target.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (7)
1. endovascular stent coating preparation facilities, comprise the ultrasonic atomizatio spray equipment and the endovascular stent spraying operating desk that are oppositely arranged, it is characterized in that: described endovascular stent spraying operating desk comprises motor, servo-driver and automatic control system, the output shaft of described motor is for being in transmission connection with endovascular stent, the control output end of described servo-driver and the control input end of motor electrically connect, and the control input end of described servo-driver and the control output end of automatic control system electrically connect.
2. endovascular stent coating preparation facilities as claimed in claim 1, it is characterized in that: described motor is hollow-cup motor.
3. endovascular stent coating preparation facilities as claimed in claim 1, it is characterized in that: on the output shaft of motor, also be provided be used to holding the semiclosed cover of endovascular stent, the opening of described semiclosed cover in the horizontal direction.
4. endovascular stent coating preparation facilities as claimed any one in claims 1 to 3, it is characterized in that: described ultrasonic atomizatio spray equipment comprises gas cylinder, carrier fluid bottle, tank, shower nozzle and ultrasonic atomization assembly, described gas cylinder is communicated in carrier fluid bottle liquid level top by wireway, described carrier fluid bottle top has the pipeline be communicated with shower nozzle, described carrier fluid bottle is dipped under the liquid level of tank at least partly, and the ultrasonic atomization assembly is arranged at the position that bottom of gullet is relative with the carrier fluid bottle.
5. endovascular stent coating preparation facilities as claimed in claim 4, it is characterized in that: the control input end of described ultrasonic atomizatio assembly and the control output end of automatic control system electrically connect.
6. endovascular stent coating preparation facilities as described in claim 5, is characterized in that: along outgassing direction, be disposed with decompressor and filter on described wireway.
7. endovascular stent coating preparation facilities as claimed in claim 6, it is characterized in that: described decompressor comprises the double reductor set gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203637173U CN203304128U (en) | 2013-06-24 | 2013-06-24 | Endovascular stent coating preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203637173U CN203304128U (en) | 2013-06-24 | 2013-06-24 | Endovascular stent coating preparation device |
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| Publication Number | Publication Date |
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| CN203304128U true CN203304128U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203637173U Expired - Fee Related CN203304128U (en) | 2013-06-24 | 2013-06-24 | Endovascular stent coating preparation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042260A (en) * | 2021-03-25 | 2021-06-29 | 哈尔滨医科大学 | Support spraying positioning tool and support spraying device |
| CN116748062A (en) * | 2023-08-14 | 2023-09-15 | 广州南洋电缆集团有限公司 | Non-contact corrosion inhibition passivating agent ultrasonic atomization coating device |
-
2013
- 2013-06-24 CN CN2013203637173U patent/CN203304128U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042260A (en) * | 2021-03-25 | 2021-06-29 | 哈尔滨医科大学 | Support spraying positioning tool and support spraying device |
| CN113042260B (en) * | 2021-03-25 | 2022-05-03 | 哈尔滨医科大学 | Medicine location frock is spouted to support and support spraying device |
| CN116748062A (en) * | 2023-08-14 | 2023-09-15 | 广州南洋电缆集团有限公司 | Non-contact corrosion inhibition passivating agent ultrasonic atomization coating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20150624 |
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| EXPY | Termination of patent right or utility model |