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US 5,318,529 AGranted
Angioplasty balloon catheter and adaptor
AssigneeBoston Scientific Corporation
InventorStavros B. Kontos
Life of this patent
Estimating the term…
Abstract
The invention described is a single lumen balloon catheter with a detachable adaptor, a rotatable guide wire and a short guide tube, in which the guide tube provides a path for the guide wire, the adaptor incorporates means for rotating the guide wire and whereby axial force can be transmitted to the guide tube.
Claims46
A balloon catheter assembly comprising:
- an elongated first tubular member having proximal and distal portions terminating respectively in proximal and distal ends and having a lumen therein,
- an adaptor, attached to said first tubular member for connecting a source of fluid pressure to said first tubular member,
- a balloon membrane having proximal and distal ends, wherein its proximal end is attached to said first tubular member,
- a second tubular member having proximal and distal portions terminating respectively in proximal and distal ends and a lumen therein, wherein the distal end of said member is attached to said second tubular member, said second tubular member extending at least from near the distal end of said membrane to said first tubular member, but not substantially into said first tubular member for a major portion of said first tubular member's overall length,
- a balloon chamber defined by said membrane and its attachment at one end to said first tubular member and at its other end to said second tubular member, wherein said chamber is in communication with the lumen of said first tubular member and wherein, when not inflated, said balloon chamber extends distally of the distal end of said first tubular member,
- a guide wire having proximal and distal portions terminating respectively in proximal and distal ends, extending at least from the proximal portion of said first tubular member through the distal end of the second tubular member, wherein the diameter of the proximal portion of said guide wire is larger than the inside diameter of the proximal end of said second tubular member and is greater than the diameter of the distal portion of said guide wire, said distal portion of said guide wire having a diameter smaller than the diameter of the lumen of said second tubular member and wherein said guide wire is not fixedly attached to said second tubular member or to said balloon membrane or to said distal portion of said first tubular member,
- means for preventing the distal end of said second tubular member from entering the lumen of said first tubular member,
- means for limiting the axial motion of said guide wire relative to said first tubular member, and
- means for applying axial force to the distal end of said balloon membrane.
6 more elements
A balloon catheter assembly comprising:
- an elongated first tubular member having proximal and distal portions terminating respectively in proximal and distal ends and having a lumen therein,
- an adaptor, attached to said first tubular member for connecting a source of fluid pressure to said first tubular member,
- a balloon membrane having proximal and distal ends, wherein its proximal end is attached to said first tubular member,
- a second tubular member having proximal and distal portions terminating respectively in proximal and distal ends and a lumen therein, wherein the distal end of said member is attached to said second tubular member, said second tubular member extending at least from near the distal end of said membrane to said first tubular member, but not substantially into said first tubular member for a major portion of said first tubular member's overall length, wherein said second tubular member is comprised of two segments with a gap therebetween,
- a balloon chamber defined by said membrane and its attachment at one end to said first tubular member and at its other end to said second tubular member, wherein said chamber is in communication with the lumen of said first tubular member and wherein, when not inflated, said balloon chamber extends distally of the distal end of said first tubular member,
- a guide wire having proximal and distal portions terminating respectively in proximal and distal ends, extending at least from the proximal portion of said first tubular member through the distal end of the second tubular member, wherein said guide wire is not fixedly attached to said second tubular member or to said balloon membrane or to said distal portion of said first tubular member,
- means for preventing the distal end of said second tubular member from entering the lumen of said first tubular member,
- means for limiting the axial motion of said guide wire relative to said first tubular member,
- means for applying axial force to the distal end of said balloon membrane, and
- stress-relief means for relieving stresses in said second tubular member wherein said structure of said second tubular member comprises said stress relief means.
7 more elements
A balloon catheter assembly comprising:
- a catheter tube having proximal and distal portions terminating respectively in proximal and distal ends, and having a lumen therein,
- an adaptor attached to the proximal portion of said catheter tube, said adaptor having a lumen therein which communicates with the lumen in said catheter tube,
- a guide tube having proximal and distal portions terminating respectively in proximal and distal ends and having a lumen therein, said guide tube being substantially shorter than said catheter tube and having an outside diameter smaller than the diameter of the lumen in said catheter tube,
- an expandable membrane having proximal and distal ends, said proximal end attached to said distal portion of said catheter tube and said distal end attached to said distal portion of said guide tube, said expandable membrane defining a balloon chamber, said balloon chamber being in communication with the lumen of said catheter tube,
- a captive guide wire having proximal and distal portions terminating respectively in proximal and distal ends, said proximal portion having a larger diameter than said distal portion, the diameter of said proximal portion being larger than the diameter of the lumen of said guide tube, the diameter of said distal portion being smaller than the lumen of said guide tube, the length of said distal portion of said guide wire being longer than the length of the guide tube, said distal portion of said guide wire being at least partially disposed within said guide tube,
- a knob attached to the proximal end of said guide wire, said knob capable of transmitting axial as well as rotational forces to said guide wire, and
- a coil at the distal end of said guide wire having an outer diameter larger than the diameter of the lumen of the guide tube.
4 more elements
A balloon catheter assembly comprising:
- a catheter tube having proximal and distal portions terminating respectively in proximal and distal ends and having a lumen therein,
- an adaptor attached to the proximal portion of said catheter tube, said adaptor having a lumen therein which communicates with the lumen in said catheter tube,
- a guide tube having proximal and distal portions terminating respectively in proximal and distal ends and a lumen therein, said guide tube being substantially shorter than said catheter tube and having an outside diameter smaller than the diameter of the lumen in said catheter tube,
- an expandable membrane having proximal and distal ends, said proximal end attached to said distal portion of said catheter tube and said distal end attached to said distal portion of said guide tube, said expandable membrane defining a balloon chamber, said balloon chamber being in communication with the lumen of said catheter tube, and wherein, when not inflated, said balloon chamber extends distally of the distal end of said catheter tube,
- a captive guide wire having proximal and distal portions terminating respectively in proximal and distal ends, said proximal portion having a larger diameter than said distal portion, the diameter of said proximal portion being larger than the diameter of the lumen of said guide tube, the diameter of said distal portion being smaller than the lumen of said guide tube, the length of said distal portion of said guide wire being longer than the length of the guide tube, said distal portion of said guide wire being at least partially disposed within said guide tube,
- a knob attached to the proximal end of said guide wire, said knob capable of transmitting axial as well as rotational forces to said guide wire,
- a coil at the distal end of said guide wire having an outer diameter larger than the diameter of the lumen of the guide tube,
- means for preventing the distal end of said guide tube from entering the lumen of said catheter tube member,
- means for limiting the axial motion of said guide tube relative to said catheter tube member, and
- means for applying axial force, in the distal direction, to the distal end of said balloon member.
7 more elements
Dependencies are inferred from the claim text.