IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0282485
(2002-10-29)
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발명자
/ 주소 |
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| 출원인 / 주소 |
- Bard Peripheral Vascular, Inc.
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
44 인용 특허 :
14 |
초록
▼
A stent compression method for particular use in pre-surgical securing and conforming of a vascular stent upon an angioplasty balloon. One variation of the stent compression method comprises inflating an agioplasty balloon inside a vascular stent in order to secure the vascular stent upon the balloo
A stent compression method for particular use in pre-surgical securing and conforming of a vascular stent upon an angioplasty balloon. One variation of the stent compression method comprises inflating an agioplasty balloon inside a vascular stent in order to secure the vascular stent upon the balloon; applying uniform compression pressure around the balloon/stent unit; and adjusting the internal balloon pressure and the compression pressure so that the balloon/stent unit is compressed. A pressure chamber with an elastic cylindrical membrane mounted inside the chamber may be used to provide the compression pressure. The inflated balloon provides the balancing pressure from inside the stent. The maintenance of internal balloon pressure during the stent compression process may provide uniform distribution of pressure along the stent and even radial compression rate around the circumferential surface of the stent.
대표청구항
▼
1. A method of compressing a stent on to a balloon comprising the steps of: providing a stent; inserting a balloon into said stent; inflating said balloon; placing said balloon, with said stent on the balloon, into a compression chamber; and compressing the stent. 2. The method accord
1. A method of compressing a stent on to a balloon comprising the steps of: providing a stent; inserting a balloon into said stent; inflating said balloon; placing said balloon, with said stent on the balloon, into a compression chamber; and compressing the stent. 2. The method according to claim 1, wherein the inserting step comprises inserting a balloon into said stent wherein said balloon is located on a balloon catheter.3. The method according to claim 2, wherein the inserting step comprises inserting a balloon into said stent wherein said balloon is located on a balloon catheter and said balloon is deflated.4. The method according to claim 1, wherein the inserting step comprises inserting a deflated balloon into said stent.5. The method according to claim 1, wherein the inserting step comprises inserting a partially inflated balloon into said stent.6. The method according to claim 1, wherein the inserting step further comprises the step of centering said stent on said balloon, such that the stent is located on the center of said balloon.7. The method according to claim 1, wherein the inflating step comprises inflating said balloon with fluid.8. The method according to claim 1, wherein the inflating step comprises inflating said balloon until the outer diameter of said balloon is the same as the inner diameter of said stent.9. The method according to claim 1, wherein the inflating step comprises inflating said balloon until said stent is fully expanded.10. The method according to claim 1, wherein the compressing step further comprises the steps of: pressurizing a pressure chamber, said pressure chamber being located within said compression chamber, until a compression layer inside said compression chamber comes into contact with an outer circumferential surface of said stent; and increasing pressure in said compression chamber while decreasing pressure within said balloon. 11. The method according to claim 10, wherein the compressing step further comprises the step of continuing to increase pressure in the pressure chamber after said balloon is deflated.12. The method according to claim 1, wherein the compressing step further comprises the steps of: pressurizing a pressure chamber, said pressure chamber being located within said compression chamber, until pressure inside said pressure chamber is approximately equal to the pressure inside said balloon; and releasing the pressure inside said balloon. 13. The method according to claim 12, wherein the compressing step is controlled by an electronic controller.14. The method according to claim 1, wherein the compressing step further comprises the steps of: applying a positive pressure in a pressure chamber, said pressure chamber being located within said compression chamber; forcing a compression layer in the compression chamber to collapse inward toward said stent; and releasing the pressure inside said balloon. 15. The method according to claim 14, further comprising the steps of: releasing the pressure inside said pressure chamber; and removing the balloon, with the stent on the balloon, from the compression chamber. 16. The method according to claim 1, wherein the compressing step is controlled by an electronic controller.17. A method for uniformly compressing a vascular stent upon an angioplasty balloon, comprising the steps of: providing a vascular stent and a deflated balloon, said deflated balloon having a surface; providing a compression layer within a housing, said compression layer and said housing forming a pressure chamber therebetween; inserting said deflated balloon into said vascular stent; inflating said deflated balloon by transmitting pressure into said balloon; placing said inflated balloon, with the stent positioned around the inflated balloon, into said compression layer; pressurizing said pressure chamber to compress said compression layer and to apply circumferentially uniform pressure onto said vasc ular stent to produce compression of the vascular stent into purchase onto the balloon surface by transmitting pressure around said compression layer; and deflating said balloon by releasing pressure inside said balloon. 18. The method according to claim 17, wherein said step of inflating said deflated balloon comprises transmitting fluid pressure into said deflated balloon, and said step of pressurizing said pressure chamber comprises transmitting fluid pressure around said compression layer.19. The method according to claim 17, wherein the step of inserting said deflated balloon into said vascular stent further comprises the step of centering the stent over said balloon prior to inflating the balloon.20. The method according to claim 17, wherein prior to said step of placing said inflated balloon, said balloon has an outer diameter equal to an inner diameter of said stent.21. The method according to claim 17, wherein said step of placing said inflated balloon into said compression layer further comprises the step of dilating said compression layer by at least partially evacuating pressure from said pressure chamber prior to placing said inflated balloon into said compression layer.22. The method according to claim 17, wherein said compression layer comprises an elastic tubing.23. The method according to claim 17, wherein said compression layer comprises an elastic diaphragm.24. The method according to claim 17, wherein said step of pressurizing said pressure chamber further comprises pressurizing said pressure chamber to a point where the pressure inside the pressure chamber is equal to the pressure inside the balloon.25. A method for uniformly compressing a stent upon an angioplasty balloon, comprising the steps of: providing a vascular stent and a deflated balloon, said deflated balloon having a surface; providing an elastic diaphragm within a housing, said elastic diaphragm and said housing forming a pressure chamber therebetween; inserting said vascular stent and said deflated balloon into said elastic diaphragm such that said vascular stent is positioned around said deflated balloon; inflating said balloon; and pressurizing said pressure chamber to compress said elastic diaphragm and to apply circumferentially uniform pressure onto said vascular stent to produce compression of the vascular stent into the balloon surface by transmitting pressure around said elastic diaphragm. 26. The method according to claim 25, wherein said step of inflating said deflated balloon comprises transmitting fluid pressure into said deflated balloon, and said step of pressurizing said pressure chamber comprises transmitting fluid pressure around said elastic diaphragm.27. A method for uniformly compressing a stent upon an angioplasty balloon, comprising the steps of: providing a stent and a deflated balloon, said deflated balloon having a surface; providing an elastic diaphragm within a housing, said elastic diaphragm and said housing forming a pressure chamber therebetween; inserting said stent into said elastic diaphragm such that said diaphragm is positioned around said stent; inserting said deflated balloon into said stent; inflating said balloon; pressurizing said pressure chamber to compress said elastic diaphragm and to apply circumferentially uniform pressure onto said vascular stent to produce compression of the vascular stent on to the balloon surface by transmitting pressure around said elastic diaphragm; and releasing pressure inside said balloon. 28. The method according to claim 27, wherein said step of inserting said stent into said elastic diaphragm further comprises the step of dilating said elastic diaphragm by at least partially evacuating pressure from said pressure chamber prior to inserting said stent into said elastic diaphragm.
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