公开(公告)号：US06702840B2

公开(公告)日：2004-03-09

申请号：US09907799

申请日：2001-07-18

申请人： Wade E. Keller ,  Timothy R. Machold ,  Mark A. Saab

发明人： Wade E. Keller ,  Timothy R. Machold ,  Mark A. Saab

IPC分类号： A61F700

CPC分类号： A61F7/12 ,  A61F2007/126

摘要： A catheter for exchanging heat with a body fluid is disclosed. The catheter includes a main shaft and a heat exchange region having a plurality of heat exchange elements each having a length and opposed ends. Each of the elements is attached on at least one of its ends to the shaft and disposed so that when inserted in a fluid body cavity having body fluid therein, the body fluid may circumferentially surround each heat exchange element along a portion of the length of the heat exchange element. The catheter includes a fluid circulation path therein, which desirably includes the hollow lumen within each of heat exchange elements. The heat exchange elements may be connected at two points along the shaft using manifolds that are in fluid communication with fluid flow paths within the shaft. Alternatively, the heat exchange elements may be connected at only one point and be permitted to float in a proximal or distal direction with respect to the catheter. The heat exchange region may be formed on a distal portion of the catheter, or may be formed along the entire length thereof. In the former configuration, an insulating member, such as a balloon, may be provided along the shaft proximal to the heat exchange region. Ribs may be provided on each heat exchange element to disrupt flow therearound and increase heat exchange. Each of the heat exchange elements may be non-circular in cross-section, and may extend in an undulating path with respect to the catheter shaft.

公开(公告)号：US06264679B1

公开(公告)日：2001-07-24

申请号：US09378578

申请日：1999-08-20

申请人： Wade E. Keller ,  Timothy R. MacHold ,  Mark A. Saab

发明人： Wade E. Keller ,  Timothy R. MacHold ,  Mark A. Saab

IPC分类号： A61F700

CPC分类号： A61F7/12 ,  A61F2007/126

摘要： A catheter for exchanging heat with a body fluid is disclosed. The catheter includes a main shaft and a heat exchange region having a plurality of heat exchange elements each having a length and opposed ends. Each of the elements is attached on at least one of its ends to the shaft and disposed so that when inserted in a fluid body cavity having body fluid therein, the body fluid may circumferentially surround each heat exchange element along a portion of the length of the heat exchange element. The catheter includes a fluid circulation path therein, which desirably includes the hollow lumen within each of heat exchange elements. The heat exchange elements may be connected at two points along the shaft using manifolds that are in fluid communication with fluid flow paths within the shaft. Alternatively, the heat exchange elements may be connected at only one point and be permitted to float in a proximal or distal direction with respect to the catheter. The heat exchange region may be formed on a distal portion of the catheter, or may be formed along the entire length thereof. In the former configuration, an insulating member, such as a balloon, may be provided along the shaft proximal to the heat exchange region. Ribs may be provided on each heat exchange element to disrupt flow therearound and increase heat exchange. Each of the heat exchange elements may be non-circular in cross-section, and may extend in an undulating path with respect to the catheter shaft.

摘要翻译： 公开了一种用于与体液交换热量的导管。 导管包括主轴和具有多个热交换元件的热交换区域，每个热交换元件具有长度和相对端。 每个元件的至少一个端部连接到轴上并且被设置为使得当插入其中具有体液的流体体腔中时，体液可以沿着长度方向的一部分周向地围绕每个热交换元件 热交换元件 导管包括其中的流体循环路径，其理想地包括在每个热交换元件内的中空腔。 热交换元件可以使用与轴内的流体流动路径流体连通的歧管在轴的两个点处连接。 或者，热交换元件可以仅在一个点处连接并且允许相对于导管在近端或远端方向上浮动。 热交换区域可以形成在导管的远端部分上，或者可以沿其整个长度形成。 在前一种构造中，可以沿着靠近热交换区域的轴设置绝缘构件，例如气球。 可以在每个热交换元件上提供肋以破坏其周围的流动并增加热交换。 每个热交换元件的横截面可以是非圆形的，并且可以相对于导管轴在起伏的路径中延伸。