公开(公告)号：WO1995017223A1

公开(公告)日：1995-06-29

申请号：PCT/US1994014604

申请日：1994-12-21

Applicant: C.R. BARD, INC.

Inventor： C.R. BARD, INC. ,  FAGAN, John, R. ,  KLING, Jeffrey

IPC: A61M25/10

CPC classification number: A61M25/1002 ,  A61M25/104 ,  A61M2025/1086

Abstract: A dilatation balloon having at least one helical groove disposed in at least a portion of the dilating surface of the dilatation balloon is mounted on the distal end of a catheter shaft. Multiple helical grooves may be provided in the dilatation balloon extending parallel to each other or opposite to each other in the dilating surface. Each helical groove has a pitch, width and depth. According to one aspect of the invention, the pitch, width and depth of the helical groove, as well as the number of grooves, are selected to allow perfusion of blood past the dilatation catheter when the dilatation balloon is inflated in a blood vessel. According to another aspect of the invention, the pitch, width, and depth of the helical groove, as well as the number of grooves, are selected so that the dilatation balloon conforms to a tortuous blood vessel and does not straighten the blood vessel during dilation. According to another aspect of the invention, the pitch, width, and depth of the helical groove, as well as the number of grooves, are selected to control the diametrical compliance of the dilatation balloon. The pitch, width, and depth of the helical groove may be selected to provide both conformance to the shape of tortuous blood vessels and diametrical compliance. The helical groove also permits the dilatation balloon to deflate without "winging", i.e., forming undesirable flat folds that extend outward from the rest of the catheter.

Abstract translation: 具有设置在扩张球囊的扩张表面的至少一部分中的至少一个螺旋槽的扩张球囊安装在导管轴的远端。 可以在膨胀气囊中设置多个螺旋槽，该膨胀气囊在扩张表面中彼此平行延伸或彼此相对延伸。 每个螺旋槽具有间距，宽度和深度。 根据本发明的一个方面，选择螺旋槽的间距，宽度和深度以及凹槽的数量，以便当膨胀球囊在血管中膨胀时允许血液经过扩张导管灌注。 根据本发明的另一方面，选择螺旋槽的间距，宽度和深度以及凹槽的数量，使得膨胀球囊符合曲折的血管，并且在扩张期间不使血管伸直 。 根据本发明的另一方面，选择螺旋槽的间距，宽度和深度以及凹槽的数量以控制膨胀气囊的直径依从性。 可以选择螺旋槽的螺距，宽度和深度以提供符合曲折血管形状和直径依从性。 螺旋槽还允许扩张气囊在没有“翼”的情况下放气，即形成从导管的其余部分向外延伸的不期望的平折。

公开(公告)号：EP0735906A1

公开(公告)日：1996-10-09

申请号：EP95905998.0

申请日：1994-12-21

Applicant: C.R. BARD, INC.

Inventor： FAGAN, John, R. ,  KLING, Jeffrey

IPC: A61M25 ,  A61F2

CPC classification number: A61M25/1002 ,  A61M25/104 ,  A61M2025/1086

Abstract: A dilatation balloon having at least one helical groove disposed in at least a portion of the dilating surface of the dilatation balloon is mounted on the distal end of a catheter shaft. Multiple helical grooves may be provided in the dilatation balloon extending parallel to each other or opposite to each other in the dilating surface. Each helical groove has a pitch, width and depth. According to one aspect of the invention, the pitch, width and depth of the helical groove, as well as the number of grooves, are selected to allow perfusion of blood past the dilatation catheter when the dilatation balloon is inflated in a blood vessel. According to another aspect of the invention, the pitch, width, and depth of the helical groove, as well as the number of grooves, are selected so that the dilatation balloon conforms to a tortuous blood vessel and does not straighten the blood vessel during dilation. According to another aspect of the invention, the pitch, width, and depth of the helical groove, as well as the number of grooves, are selected to control the diametrical compliance of the dilatation balloon. The pitch, width, and depth of the helical groove may be selected to provide both conformance to the shape of tortuous blood vessels and diametrical compliance. The helical groove also permits the dilatation balloon to deflate without "winging", i.e., forming undesirable flat folds that extend outward from the rest of the catheter.

Abstract translation: 具有设置在扩张球囊的扩张表面的至少一部分中的至少一个螺旋槽的扩张球囊安装在导管杆的远端上。 在膨胀气囊中可以设置多个螺旋形凹槽，所述扩张气囊在扩张表面中彼此平行或彼此相对地延伸。 每个螺旋槽都有一个节距，宽度和深度。 根据本发明的一个方面，选择螺旋凹槽的节距，宽度和深度以及凹槽的数量，以在扩张气囊在血管中膨胀时允许血液灌注通过扩张导管。 根据本发明的另一方面，选择螺旋槽的节距，宽度和深度以及槽的数量，使得扩张气囊符合迂曲的血管并且在扩张期间不拉直血管 。 根据本发明的另一方面，选择螺旋槽的节距，宽度和深度以及槽的数量以控制扩张气囊的直径顺应性。 可以选择螺旋槽的节距，宽度和深度以提供对曲折血管的形状和径向顺应性的顺应性。 螺旋槽也允许膨胀气囊放气而不“翼”，即形成从导管的其余部分向外延伸的不希望的平折。