Catheter attachment device
First Claim
1. Connector apparatus for coupling an end of a resilient tube about the exterior of a tubular extension of a fluid transfer device, said tube having a nominal inner diameter d'"'"' and having a wall thickness t when positioned about the exterior of said tubular extension, said extension extending along a port axis and having an outer diameter d, and a length at least equal to l2, where d is greater than or equal to d'"'"', said connector apparatus comprising:
- A. a rigid tubular sleeve having an interior wall and extending along a reference axis from a first end to a second end, said sleeve having a first inner diameter Ds1 at said first end, where Ds1 is equal to at least about d +2t, and a second inner diameter Ds2 at an intermediate point a distance l1 from said first end, where l1 is less than or equal to l2 along said reference axis between said first and second end, where Ds2 is less than Ds1 and greater than d, andB. a rigid body part disposed about said tubular sleeve and associated capture means for capturing said sleeve within said body part,whereby said sleeve is freely rotatable about said reference axis with respect to said body part,wherein said body part further includes twist lock means at said first end, responsive to coaxial alignment of said port axis and said reference axis and to subsequent rotation of said body part about said reference axis and said port axis, for selectively engaging said body part to said fluid transfer device having said tubular extension, when said sleeve is coaxial with and positioned about said tubular extension.
10 Assignments
0 Petitions
Accused Products
Abstract
A connector for detachably securing an end of a tube, such as a catheter, to a fluid port of a fluid transfer device, such as an implantable device, the connector having a body part which defines a coupler for coupling to a coupler receiver of the transfer device. The connector includes a sleeve which fits within the body part and defines an aperture for compressively receiving an end of the tube which has been fitted over a fluid port of the transfer device. The body part is rotatable about the sleeve to facilitate coupling of the coupler and coupler receiver. In one embodiment the sleeve has an inner diameter at one end large enough to slide freely over the tube when it is fitted over the fluid port, and the diameter decreases at an intermediate point along the length of the sleeve to provide for compressive axial movement of the tube to form an annular thickness portion of the tube where it abuts the face of the transfer device.
382 Citations
13 Claims
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1. Connector apparatus for coupling an end of a resilient tube about the exterior of a tubular extension of a fluid transfer device, said tube having a nominal inner diameter d'"'"' and having a wall thickness t when positioned about the exterior of said tubular extension, said extension extending along a port axis and having an outer diameter d, and a length at least equal to l2, where d is greater than or equal to d'"'"', said connector apparatus comprising:
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A. a rigid tubular sleeve having an interior wall and extending along a reference axis from a first end to a second end, said sleeve having a first inner diameter Ds1 at said first end, where Ds1 is equal to at least about d +2t, and a second inner diameter Ds2 at an intermediate point a distance l1 from said first end, where l1 is less than or equal to l2 along said reference axis between said first and second end, where Ds2 is less than Ds1 and greater than d, and B. a rigid body part disposed about said tubular sleeve and associated capture means for capturing said sleeve within said body part, whereby said sleeve is freely rotatable about said reference axis with respect to said body part, wherein said body part further includes twist lock means at said first end, responsive to coaxial alignment of said port axis and said reference axis and to subsequent rotation of said body part about said reference axis and said port axis, for selectively engaging said body part to said fluid transfer device having said tubular extension, when said sleeve is coaxial with and positioned about said tubular extension. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A connector apparatus for coupling an end of a resilient tube about the exterior of a tubular extension of a fluid transfer device, said extension extending along a port axis and having an outer diameter d, said connector apparatus comprising:
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A. said fluid transfer device, B. a rigid tubular sleeve extending along a reference axis, said sleeve having an inner diameter Ds, where Ds is greater than d, and C. a rigid body part disposed about said tubular sleeve and associated capture means for capturing said sleeve within said body part, whereby said sleeve is freely rotatable about said reference axis with respect to said body part, wherein said body part further includes twist lock means responsive to coaxial alignment of said port axis and said reference axis and to subsequent rotation of said body part about said reference axis and said port axis, for selectively engaging said body part to said fluid transfer device with said sleeve being coaxial with and positioned about said tubular extension, said twist lock means comprising a pair of flanges radially extending from said body part and a pair of flange receivers on said fluid transfer device, whereby said pair of flanges is cooperable with said pair of flange receivers upon rotation of said body part to selectively interlockingly couple said body part and said fluid transfer device, and wherein said twist lock means further includes a retention element extending radially from said body part adjacent to said pair of flanges and in a plane perpendicular to said pair of flanges to engage with one of said pair of flange receivers, upon coupling with said fluid transfer device to retain said body part in said interlocked position. - View Dependent Claims (13)
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Specification