Intravascular catheter with replaceable shaft section
First Claim
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1. An intravascular catheter with an exchangeable shaft section, comprising:
- a) an elongated tubular proximal shaft section having proximal and distal ends and a first inner lumen extending therein;
b) an elongated distal shaft section having proximal and distal ends, a port in the distal end of the distal shaft section, a second inner lumen extending therein in fluid communication with the first inner lumen in the proximal shaft section and a third inner lumen which is configured to slidably receive a guidewire and which extends therein to the port in the distal end of the distal shaft section; and
, the distal end of the proximal shaft section being releasably connected to the proximal end of the distal shaft section to effect fluid communication between the first and second inner lumens; and
c) means to releasably interconnect the distal end of the proximal shaft section and the proximal end of the distal shaft section to effect fluid communication between the first and second inner lumens an inflatable balloon provided on the distal shaft section, having an interior in fluid communication with the second inner lumen in the distal section.
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Abstract
An intravascular catheter such as a dilatation catheter for angioplasty procedures having a removable distal shaft section. The catheter construction allows the original distal shaft section of the catheter to be removed and a replacement distal shaft section to be secured to the proximal section which is useful with angioplasty catheters when the dimensions of the balloon on the original distal shaft section are inappropriate for dilating a particular stenotic region. Such catheter construction is also useful when there is a need to implant a stent into a dilated stenotic region to maintain its patency.
25 Citations
23 Claims
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1. An intravascular catheter with an exchangeable shaft section, comprising:
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a) an elongated tubular proximal shaft section having proximal and distal ends and a first inner lumen extending therein;
b) an elongated distal shaft section having proximal and distal ends, a port in the distal end of the distal shaft section, a second inner lumen extending therein in fluid communication with the first inner lumen in the proximal shaft section and a third inner lumen which is configured to slidably receive a guidewire and which extends therein to the port in the distal end of the distal shaft section; and
, the distal end of the proximal shaft section being releasably connected to the proximal end of the distal shaft section to effect fluid communication between the first and second inner lumens; and
c) means to releasably interconnect the distal end of the proximal shaft section and the proximal end of the distal shaft section to effect fluid communication between the first and second inner lumens an inflatable balloon provided on the distal shaft section, having an interior in fluid communication with the second inner lumen in the distal section. - View Dependent Claims (2, 3, 4, 5)
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6. A dilatation catheter with an exchangeable shaft section, comprising:
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a) an elongated proximal shaft section having proximal and distal ends and an a first inner lumen extending therein to the distal end;
b) an elongated distal shaft section having proximal and distal ends, a second inner lumen extending from the proximal end of the distal shaft section to a location spaced proximally from the distal end of the distal shaft section, a distal port in the distal end, a third inner lumen extending therein to and being in fluid communication with the distal port and being coextensive and parallel with at least part of the second inner lumen;
c) means to releasably connect the distal end of the proximal shaft section being releasably connected to the proximal end of the distal shaft section to effect fluid communication between the first inner lumen of the proximal shaft section and the second inner lumen of the distal shaft section; and
d) an inflatable dilatation balloon on the distal shaft section having an interior in fluid communication with the second inner lumen. - View Dependent Claims (7, 8, 9)
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10. A balloon catheter with an exchangeable shaft section, comprising:
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a) an elongated proximal shaft section having proximal and distal ends and an first inner lumen extending therein to the distal end;
b) an elongated distal shaft section having proximal and distal ends, a second inner lumen extending from the proximal end of the distal shaft section to a location spaced proximally from the distal end of the distal shaft section, a distal port in the distal end of the distal shaft section, a third inner lumen extending within the distal shaft section to the distal port and a third inner lumen extending therein coextensive and parallel with at least part of the second inner lumen and being in fluid communication with the distal port;
c) means to releasably connect the distal end of the proximal shaft section and the proximal end of the distal shaft section to effect fluid communication between the first inner lumen of the proximal shaft section and the second inner lumen of the distal shaft section; and
d) an inflatable balloon on the distal shaft section having an interior in fluid communication with the second inner lumen. - View Dependent Claims (11)
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12. A method of treating a patient'"'"'s body lumen, comprising:
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a) providing an intraluminal catheter which has an elongated catheter shaft, a proximal shaft section, a replaceable distal shaft section and means to releasably connect the replaceable distal section with connected to the proximal shaft section;
b) advancing the intraluminal catheter through a patient'"'"'s body lumen until the catheter is disposed within a desired region thereof;
c) performing an intraluminal procedure within the body lumen with the intraluminal catheter;
d) withdrawing the intraluminal catheter from the patient;
e) removing the replaceable distal shaft section of the intraluminal catheter;
f) connecting a replacement distal shaft section to the proximal shaft section; and
g) advancing the intraluminal catheter with the replacement distal shaft section into the patient'"'"'s body lumen until the intraluminal catheter is disposed within a desired region of the patient'"'"'s body lumen.
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13. A method of treating a patient'"'"'s body lumen, comprising:
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a) providing a dilatation catheter which has an elongated catheter shaft, a replaceable distal shaft section, a dilatation balloon on the replaceable distal shaft section, and a proximal shaft portion and means to connect the proximal and releasably connected to the distal shaft sections section;
b) advancing the dilatation catheter through the patient'"'"'s vasculature until the dilatation balloon is disposed within a stenotic region of a patient'"'"'s artery;
c) withdrawing the dilatation catheter from the patient;
d) removing the replaceable distal shaft section of the catheter;
ande) connecting a replacement distal shaft section to the proximal shaft section; and
f) advancing the catheter with the replacement distal shaft section into the patient'"'"'s vasculature until the catheter is disposed within a desired region of the patient'"'"'s vasculature. - View Dependent Claims (14)
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15. A dilatation catheter comprising:
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a) an elongated catheter shaft having proximal and distal ends, a guidewire port in the distal end, a guidewire receiving inner lumen extending to and being in fluid communication with the guidewire port and an inflation lumen extending to a location proximal to the distal end;
b) a proximal shaft section having proximal and distal ends and at least part of the inflation lumen extending therein to the distal end of the proximal shaft section; and
c) a replaceable distal shaft section having a proximal end, being releasably connected by said proximal end of the distal shaft section to the distal end of the proximal shaft section, at least part of the inflation lumen extending within the distal shaft section distally therein from the proximal end of the distal shaft section to the location proximal to the distal end of the catheter shaft; and
d) a dilatation balloon on the distal shaft section surrounding the location having an interior in fluid communication with the portion of the inflation lumen extending within the distal shaft section.
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16. An intravascular catheter comprising:
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a) a proximal shaft section having a proximal end, a distal end and an inner lumen extending therein;
b) a distal shaft section having a proximal end, a distal end, a port in the distal end, a second inner lumen extending therein in fluid communication with the inner lumen of the proximal shaft section and a third inner lumen extending parallel and at least partially coextensive with the second inner lumen within the distal shaft section and in fluid communication with the port in the distal end of the distal shaft section; and
c) means to releasably connect the proximal end to the distal shaft section to the distal end of the proximal shaft section. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification