Extendable guidewire for cardiovascular procedures
First Claim
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1. An extendable guidewire system comprising:
- (a) a main guidewire section adapted to be inserted into a patient'"'"'s vascular system which has a mating end adapted to extend out of the patient;
(b) a guidewire extension section having a mating end; and
(c) a connection therebetween suitable for repetitive connections including a tubular member on the mating end of one of the guidewire sections having an open end, a male member on the mating end of the other guidewire section which is adapted to be manually inserted into the open end of the tubular member and means to releasably secure the two sections together by frictional engagement between the tubular member and the male member.
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Abstract
An extendable guidewire system for introducing a dilatation catheter into the cardiovascular system. The guidewire has guidewire and extension sections with a connection therebetween which permits the two sections to be joined together and separated simply by pushing the two sections together and pulling them apart. One of the sections can be used for positioning the catheter within the cardiovascular system, and the other section can be employed to extend the wire to change catheters.
269 Citations
10 Claims
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1. An extendable guidewire system comprising:
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(a) a main guidewire section adapted to be inserted into a patient'"'"'s vascular system which has a mating end adapted to extend out of the patient; (b) a guidewire extension section having a mating end; and (c) a connection therebetween suitable for repetitive connections including a tubular member on the mating end of one of the guidewire sections having an open end, a male member on the mating end of the other guidewire section which is adapted to be manually inserted into the open end of the tubular member and means to releasably secure the two sections together by frictional engagement between the tubular member and the male member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of using an extendable guidewire system in a vascular procedure, said guidewire system having a main guidewire section with a mating end, a guidewire extension section with a mating end, and a connection therebetween suitable for repetitive connections comprising a tubular member having an open end on one of said mating ends of the guidewire sections, a male member on the mating end of the other section which is adapted to be inserted into the open end of the tubular member and means to releasably secure the interconnected ends together, the method comprising the steps of:
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(a) percutaneously introducing a main guidewire section into the vascular system of a patient with the mating end thereof extending outside the body of the patient; (b) advancing a first catheter over the main guidewire section within the vascular system; (c) releasably securing the mating end of the extension guidewire section to the mating end of the main guidewire section by manually inserting the male member on one of the guidewire sections into the tubular member on the other guidewire section so that the interconnected ends are releasably secured together by frictional engagement between the tubular member and the male member; (d) withdrawing the first catheter from the vascular system of the patient over the two interconnected guidewire sections; (e) introducing a second catheter into the patient'"'"'s vascular system over the two interconnected guide sections; and (f) disengaging the extension guidewire section from the main guidewire section by manually pulling the two guidewire sections apart with the main guidewire section remaining in place in the vascular system of the patient.
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Specification