Catheter with guidewire and rounded enlargement and method
First Claim
Patent Images
1. A catheter comprising:
- an elongated catheter body having a distal end;
an elongated flexible guidewire having proximal and distal ends, said guidewire including a rounded enlargement between said ends of the guidewire;
said guidewire being mounted on the catheter body for movement longitudinally relative to the catheter body from a first position in which the rounded enlargement is adjacent the distal end of the catheter body to a second position in which the rounded enlargement is located distally of the position the rounded enlargement occupies in the first position; and
a controller carried by the catheter body for use in moving the guidewire longitudinally relative to the catheter body.
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Abstract
A catheter comprising an elongated catheter body having a distal end and an elongated flexible guidewire having proximal and distal ends. The guidewire includes a rounded enlargement between the ends of the guidewire. The guidewire is mounted on the catheter body for movement longitudinally relative to the catheter body between a first position in which the rounded enlargement is adjacent the distal end of the catheter body and a second position in which the rounded enlargement is located distally of the position the rounded enlargement occupies in the first position.
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Citations
29 Claims
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1. A catheter comprising:
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an elongated catheter body having a distal end; an elongated flexible guidewire having proximal and distal ends, said guidewire including a rounded enlargement between said ends of the guidewire; said guidewire being mounted on the catheter body for movement longitudinally relative to the catheter body from a first position in which the rounded enlargement is adjacent the distal end of the catheter body to a second position in which the rounded enlargement is located distally of the position the rounded enlargement occupies in the first position; and a controller carried by the catheter body for use in moving the guidewire longitudinally relative to the catheter body. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for viewing an interior passage of a patient comprising:
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an elongated catheter body having a distal end and working and guidewire lumens opening at the distal end; an elongated flexible guidewire having proximal and distal ends, said guidewire including a rounded enlargement between said ends of the guidewire; said guidewire being carried by the catheter body and being at least partially received in the guidewire lumen, said guidewire being movable longitudinally relative to the catheter body from a first position in which the rounded enlargement is adjacent the distal end of the catheter body and a second position in which the rounded enlargement is located distally of the position the rounded enlargement occupies in the first position; and an elongated endoscope in the working lumen. - View Dependent Claims (8, 9, 10)
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11. A method of viewing an interior passage of a patient using a catheter which includes a catheter body having a distal end, a lumen opening at the distal end and an elongated guidewire movable longitudinally relative to the catheter body and having a distal end and a rounded enlargement spaced proximally from the distal end of the guidewire, said method comprising:
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placing the guidewire and catheter body into the interior passage in the patient; advancing the guidewire and the catheter body in the interior passage of the patient with the guidewire guiding the advancing movement of the catheter body and with the enlargement relatively close to the distal end of the catheter body to aid the advancing movement of the catheter body in the interior passage; relatively moving the guidewire and the catheter body to move the enlargement farther distally of the distal end of the catheter body following at least a portion of the step of advancing the catheter body; providing an endoscope in the lumen of the catheter body; relatively displacing the distal end of the catheter body and material within or forming the passage within a zone of the interior passage utilizing the enlargement; and viewing at least a portion of said zone of the interior passage utilizing the endoscope while the distal end of the catheter body and said material are relatively displaced. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A catheter comprising:
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an elongated catheter body having a distal end, a working lumen for receiving a medical instrument or a fluid and a guidewire lumen opening at the distal end of the catheter body; an elongated flexible guidewire having proximal and distal ends, said guidewire including a rounded enlargement between said ends of the guidewire, a proximal section between the proximal end of the guidewire and the rounded enlargement and a distal section between the distal end of the guidewire and the rounded enlargement; at least a portion of said proximal section of said guidewire being received in said guidewire lumen and mounted on the catheter body so that the guidewire can be moved longitudinally relative to the catheter body from a first position in which the rounded enlargement is adjacent the distal end of the catheter body to a second position in which the rounded enlargement is located distally of the position the rounded enlargement occupies in the first position and a controller carried by the catheter body and coupled to the proximal section of the guidewire for use in moving the guidewire longitudinally relative to the catheter body. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A catheter comprising:
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an elongated catheter body having a distal end, a working lumen for receiving a medical instrument or a fluid and a guidewire lumen opening at the distal end of the catheter body; an elongated flexible guidewire having proximal and distal ends, said guidewire including a rounded enlargement between said ends of the guidewire, a proximal section between the proximal end of the guidewire and the rounded enlargement and a distal section between the distal end of the guidewire and the rounded enlargement; at least a portion of said proximal section of said guidewire being received in said guidewire lumen and mounted on the catheter body so that the guidewire can be moved longitudinally relative to the catheter body from a first position in which the rounded enlargement is adjacent the distal end of the catheter body to a second position in which the rounded enlargement is located distally of the position the rounded enlargement occupies in the first position; and the proximal and distal sections being axially disaligned.
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Specification