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US 12,582,512 B2Granted
Method for forming PTFE coating film on stent, and stent manufactured thereby
AssigneeBCM Co., Ltd.
InventorsByung Cheol Myung, Houn Sung Kim
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method of forming a PTFE film on a stent, a stent manufactured thereby, and more particularly to a method capable of forming a PTFE film on a stent regardless of the shape of the stent, preventing the PTFE film from being peeled off from the stent, and facilitating formation of the PTFE film on the stent, a stent manufactured through the method.
Claims36
A method of forming a PTFE film on a stent, the method comprising:
- performing a taping process of winding a first sheet of polytetrafluoroethylene (PTFE) tape (31) on an entire outer surface of a jig (20) being manufactured in a same shape as a stent (10) having a plurality of spaces (11);
- fitting the jig (20) into a stent (10) and performing a taping process of winding a second sheet of polytetrafluoroethylene (PTFE) tape (32) on an entire outer surface of the stent (10);
- putting the stent (10), with the jig (20) fitted thereinto, into an oven (40) to heat the jig (20) and the stent (10) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) become ready to be adhered to each other and taking the jig (20) and the stent (10) out of the oven (40);
- fitting the heated jig (20) and the heated stent (10), with the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) respectively wound thereon, into a first receiving portion (50a) of a lower elastic member (50), the first receiving portion (50a) being formed in a same shape as a portion of the jig (20), and a first receiving portion (51a) of an upper elastic member (51), the first receiving portion (51a) being formed in a same shape as a remaining portion of the jig (20);
- fitting the lower elastic member (50) and the upper elastic member (51) into a first receiving portion (60a) of a mold (60), the first receiving portion (60a) being formed in a same shape as the lower elastic member (50) and the upper elastic member (51), and pressing the upper elastic member (51) using a press member (61) to transmit pressure from the mold (60) and the press member (61) to entire areas of the lower elastic member (50) and the upper elastic member (51) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) are adhered to each other to form a PTFE film (30) on the stent (10) and the PTFE film (30) fills a plurality of spaces (11);
- and
- taking the lower elastic member (50) and the upper elastic member (51) out of the first receiving portion (60a) of the mold (60), with pressure transmitted from the press member (61) released, taking the stent (10) out of the first receiving portion (50a) of the lower elastic member (50) and the first receiving portion (51a) of the upper elastic member (51), and removing the jig (20) from the stent (10).
4 more elements
A method of forming a PTFE film on a stent, the method comprising:
- performing a taping process of winding a first sheet of polytetrafluoroethylene (PTFE) tape (31) on each of two opposite sides of an outer surface of a jig (20) being manufactured in a same shape as a stent (10) having a plurality of spaces (11);
- fitting the jig (20) into a stent (10) and performing a taping process of winding a second sheet of polytetrafluoroethylene (PTFE) tape (32) on an entire outer surface of the stent (10);
- putting the stent (10), with the jig (20) fitted thereinto, into an oven (40) to heat the jig (20) and the stent (10) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) become ready to be adhered to each other and taking the jig (20) and the stent (10) out of the oven (40);
- fitting the heated jig (20) and the heated stent (10), with the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) respectively wound thereon, into a first receiving portion (50a) of a lower elastic member (50), the first receiving portion (50a) being formed in a same shape as a portion of the jig (20), and a first receiving portion (51a) of an upper elastic member (51), the first receiving portion (51a) being formed in a same shape as a remaining portion of the jig (20);
- fitting the lower elastic member (50) and the upper elastic member (51) into a first receiving portion (60a) of a mold (60), the first receiving portion (60a) being formed in a same shape as the lower elastic member (50) and the upper elastic member (51), and pressing the upper elastic member (51) using a press member (61) to transmit pressure from the mold (60) and the press member (61) to entire areas of the lower elastic member (50) and the upper elastic member (51) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) are adhered to each other to form a PTFE film (30) on the stent (10) and the PTFE film (30) fills some of a plurality of spaces (11);
- and
- taking the lower elastic member (50) and the upper elastic member (51) out of the first receiving portion (60a) of the mold (60), with pressure transmitted from the press member (61) released, taking the stent (10) out of the first receiving portion (50a) of the lower elastic member (50) and the first receiving portion (51a) of the upper elastic member (51), and removing the jig (20) from the stent (10).
4 more elements
A method of forming a PTFE film on a stent, the method comprising:
- performing a taping process of winding a first sheet of polytetrafluoroethylene (PTFE) tape (31) on an entire outer surface of a jig (20) being manufactured in a same shape as a stent (10) having a plurality of spaces (11);
- fitting the jig (20) into a stent (10) and performing a taping process of winding a second sheet of polytetrafluoroethylene (PTFE) tape (32) on each of two opposite sides of an outer surface of the stent (10);
- putting the stent (10), with the jig (20) fitted thereinto, into an oven (40) to heat the jig (20) and the stent (10) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) become ready to be adhered to each other and taking the jig (20) and the stent (10) out of the oven (40);
- fitting the heated jig (20) and the heated stent (10), with the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) respectively wound thereon, into a first receiving portion (50a) of a lower elastic member (50), the first receiving portion (50a) being formed in a same shape as a portion of the jig (20), and a first receiving portion (51a) of an upper elastic member (51), the first receiving portion (51a) being formed in a same shape as a remaining portion of the jig (20);
- fitting the lower elastic member (50) and the upper elastic member (51) into a first receiving portion (60a) of a mold (60), the first receiving portion (60a) being formed in a same shape as the lower elastic member (50) and the upper elastic member (51), and pressing the upper elastic member (51) using a press member (61) to transmit pressure from the mold (60) and the press member (61) to entire areas of the lower elastic member (50) and the upper elastic member (51) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) are adhered to each other to form a PTFE film (30) on the stent (10) and the PTFE film (30) fills some of a plurality of spaces (11);
- and
- taking the lower elastic member (50) and the upper elastic member (51) out of the first receiving portion (60a) of the mold (60), with pressure transmitted from the press member (61) released, taking the stent (10) out of the first receiving portion (50a) of the lower elastic member (50) and the first receiving portion (51a) of the upper elastic member (51), and removing the jig (20) from the stent (10).
4 more elements
A method of forming a PTFE film on a stent, the method comprising:
- performing a taping process of winding first sheets of polytetrafluoroethylene (PTFE) tape (31) on an outer surface of a jig (20) being manufactured in a same shape as a stent (10) having a plurality of spaces (11) so as to be disposed at predetermined intervals in a longitudinal direction of the jig (20);
- fitting the jig (20) into a stent (10) and performing a taping process of winding a second sheet of polytetrafluoroethylene (PTFE) tape (32) on an entire outer surface of the stent (10);
- putting the stent (10), with the jig (20) fitted thereinto, into an oven (40) to heat the jig (20) and the stent (10) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) become ready to be adhered to each other and taking the jig (20) and the stent (10) out of the oven (40);
- fitting the heated jig (20) and the heated stent (10), with the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) respectively wound thereon, into a first receiving portion (50a) of a lower elastic member (50), the first receiving portion (50a) being formed in a same shape as a portion of the jig (20), and a first receiving portion (51a) of an upper elastic member (51), the first receiving portion (51a) being formed in a same shape as a remaining portion of the jig (20);
- fitting the lower elastic member (50) and the upper elastic member (51) into a first receiving portion (60a) of a mold (60), the first receiving portion (60a) being formed in a same shape as the lower elastic member (50) and the upper elastic member (51), and pressing the upper elastic member (51) using a press member (61) to transmit pressure from the mold (60) and the press member (61) to entire areas of the lower elastic member (50) and the upper elastic member (51) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) are adhered to each other to form a PTFE film (30) on the stent (10) and the PTFE film (30) fills some of a plurality of spaces (11);
- and
- taking the lower elastic member (50) and the upper elastic member (51) out of the first receiving portion (60a) of the mold (60), with pressure transmitted from the press member (61) released, taking the stent (10) out of the first receiving portion (50a) of the lower elastic member (50) and the first receiving portion (51a) of the upper elastic member (51), and removing the jig (20) from the stent (10).
4 more elements
A method of forming a PTFE film on a stent, the method comprising:
- performing a taping process of winding a first sheet of polytetrafluoroethylene (PTFE) tape (31) on an entire outer surface of a jig (20) being manufactured in a same shape as a stent (10) having a plurality of spaces (11);
- fitting the jig (20) into a stent (10) and performing a taping process of winding second sheets of polytetrafluoroethylene (PTFE) tape (32) on an outer surface of the stent (10) so as to be disposed at predetermined intervals in a longitudinal direction of the stent (10);
- putting the stent (10), with the jig (20) fitted thereinto, into an oven (40) to heat the jig (20) and the stent (10) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) become ready to be adhered to each other and taking the jig (20) and the stent (10) out of the oven (40);
- fitting the heated jig (20) and the heated stent (10), with the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) respectively wound thereon, into a first receiving portion (50a) of a lower elastic member (50), the first receiving portion (50a) being formed in a same shape as a portion of the jig (20), and a first receiving portion (51a) of an upper elastic member (51), the first receiving portion (51a) being formed in a same shape as a remaining portion of the jig (20);
- fitting the lower elastic member (50) and the upper elastic member (51) into a first receiving portion (60a) of a mold (60), the first receiving portion (60a) being formed in a same shape as the lower elastic member (50) and the upper elastic member (51), and pressing the upper elastic member (51) using a press member (61) to transmit pressure from the mold (60) and the press member (61) to entire areas of the lower elastic member (50) and the upper elastic member (51) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) are adhered to each other to form a PTFE film (30) on the stent (10) and the PTFE film (30) fills some of a plurality of spaces (11);
- and
- taking the lower elastic member (50) and the upper elastic member (51) out of the first receiving portion (60a) of the mold (60), with pressure transmitted from the press member (61) released, taking the stent (10) out of the first receiving portion (50a) of the lower elastic member (50) and the first receiving portion (51a) of the upper elastic member (51), and removing the jig (20) from the stent (10).
4 more elements
A method of forming a PTFE film on a stent, the method comprising:
- performing a taping process of winding first sheets of polytetrafluoroethylene (PTFE) tape (31) on an outer surface of a jig (20) being manufactured in a same shape as a stent (10) having a plurality of spaces (11) so as to be disposed at predetermined intervals in a longitudinal direction of the jig (20);
- fitting the jig (20) into a stent (10) and performing a taping process of winding second sheets of polytetrafluoroethylene (PTFE) tape (32) on an outer surface of the stent (10) so as to be disposed at predetermined intervals in a longitudinal direction of the stent (10) and to respectively face the first sheets of polytetrafluoroethylene (PTFE) tape (31);
- putting the stent (10), with the jig (20) fitted thereinto, into an oven (40) to heat the jig (20) and the stent (10) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) become ready to be adhered to each other and taking the jig (20) and the stent (10) out of the oven (40);
- fitting the heated jig (20) and the heated stent (10), with the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) respectively wound thereon, into a first receiving portion (50a) of a lower elastic member (50), the first receiving portion (50a) being formed in a same shape as a portion of the jig (20), and a first receiving portion (51a) of an upper elastic member (51), the first receiving portion (51a) being formed in a same shape as a remaining portion of the jig (20);
- fitting the lower elastic member (50) and the upper elastic member (51) into a first receiving portion (60a) of a mold (60), the first receiving portion (60a) being formed in a same shape as the lower elastic member (50) and the upper elastic member (51), and pressing the upper elastic member (51) using a press member (61) to transmit pressure from the mold (60) and the press member (61) to entire areas of the lower elastic member (50) and the upper elastic member (51) so that the first and second sheets of polytetrafluoroethylene (PTFE) tape (31 and 32) are adhered to each other to form a PTFE film (30) on the stent (10) and the PTFE film (30) fills some of a plurality of spaces (11);
- and
- taking the lower elastic member (50) and the upper elastic member (51) out of the first receiving portion (60a) of the mold (60), with pressure transmitted from the press member (61) released, taking the stent (10) out of the first receiving portion (50a) of the lower elastic member (50) and the first receiving portion (51a) of the upper elastic member (51), and removing the jig (20) from the stent (10).
4 more elements
Dependencies are inferred from the claim text.