Guidewire Advancing Device and Method
AssigneeRedsmith, Inc.
InventorsJames D. Mitchell, Andrew A. Thoreson
Life of this patent
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Abstract
The guidewire advancing device and method according to the present invention is used with a tubular catheter body configured to receive a hollow needle for receiving the guidewire. The guidewire advancing device includes the guidewire, guidewire housing, and means for advancing and retracting the guidewire. The means for advancing the guidewire includes a spool assembly or a slide tab and may also include a rack and pinion assembly for translation of forces to advance the guidewire.
Claims28
A guidewire advancing device for inserting a guidewire into a hollow needle wherein the needle is configured for receipt within a lumen of a catheter, the needle having a proximal end and a distal end for medical device placement and access into an anatomical structure, comprising:
- a guidewire configured for receipt along the length of the hollow needle so as to be inserted into said needle proximal end to selectively extend from said needle distal end;
- and
- an advancing assembly for initially supporting said guidewire and for selectively advancing a portion of said guidewire distally through the needle proximal end and beyond the needle distal end, said advancing assembly comprising a spool rotatably supported on a shaft for receiving a proximal portion of said guidewire initially being wound on said spool, at least one peripheral member adjacent said spool wherein said at least one peripheral member is coupled with said spool and is rotated so as to rotate said spool about said shaft to advance the distal end of said guidewire distally wherein said advancing assembly is operatively connected to said needle proximal end.
A guidewire advancing device for inserting a guidewire into a hollow needle for medical device placement and access into an anatomical structure, comprising:
- a catheter for placement into the anatomical structure having a proximal and distal end and a longitudinal length therebetween;
- a needle extending along the longitudinal length of the catheter;
- a housing configured to cooperate with and be operatively associated with the catheter proximal end and the needle, said housing having a predetermined length extending between proximal and distal ends thereof and having an upper surface and proximal and distal end surfaces;
- a channel defined by at least on said housing surfaces and extending a predetermined distance between said proximal and distal ends of said housing;
- a tab slidably positioned within said channel so as to move along the length of the channel;
- a guidewire having a proximal and distal end, said guidewire proximal end being connected to said tab and said guidewire distal end extending outwardly from said housing distal end and within said catheter and needle;
- a proximal end surface defined by said housing configured to alter the direction of said guidewire when said tab is moved proximally so as to advance the guidewire distally to extend within the anatomical structure being treated.
A guidewire advancing device for inserting a guidewire into a hollow needle for medical device placement and access into an anatomical structure, comprising:
- a catheter for placement into the anatomical structure having a proximal and distal end and a longitudinal length therebetween;
- a needle extending along the longitudinal length of the catheter;
- a housing configured to cooperate with and be operatively associated with the catheter proximal end and the needle, said housing having a predetermined length extending between proximal and distal ends thereof and having an upper surface and proximal and distal end surfaces;
- a channel defined by at least one of said housing surfaces and extending a predetermined distance between said proximal and distal ends of said housing;
- a tab slidably positioned within said channel so as to move along the length of the channel;
- a guidewire having a proximal and distal end, said guidewire proximal end being connected to said tab and said guidewire distal end extending outwardly from said housing distal end and within said catheter and needle;
- a rack coupled to the slide tab, said rack having a mating surface, and a gear having an outer surface configured to mate with said rack mating and
- a spool positioned within said housing and rotatably supported on a shaft for receiving a proximal end and a proximal portion of said guidewire wherein said spool is coupled to the said gear and rotates when said gear rotates to advance said guidewire.
A method of placing a medical device with a guidewire advancing device comprising the steps of:
- providing a guidewire extending along the length of a hollow needle having a proximal and distal end so as to be inserted into said needle proximal end to selectively extend from said needle distal end;
- providing an advancing assembly comprising a spool rotatably supported on a shaft and initially supporting a proximal portion of said guidewire which is wound on the spool;
- inserting the needle within the vascular structure to be treated;
- rotating said spool and selectively advancing a distal portion of said guidewire distally through the needle proximal end and beyond the needle distal end;
- advancing a catheter over the guidewire to achieve vascular access with the catheter.
A method of placing a medical device into a target vessel with an integrated guidewire advancing device including a catheter operatively connected to a housing, a needle extending along a length of the catheter, a guidewire extending with a lumen of the needle comprising the steps of:
- providing a housing having a predetermined length extending between proximal and distal ends thereof and having an upper surface and proximal and distal end surfaces, a channel defined by at least on said housing surfaces and extending a predetermined distance between said proximal and distal ends of said housing, and a tab slidable positioned within said channel so as to move along the length of the channel;
- inserting the needle within the target vessel to be treated;
- sliding the tab within the channel proximally;
- altering the direction of guidewire travel and distally advancing the guidewire from the needle distal end and into the target vessel;
- advancing a catheter over the guidewire to achieve vascular access with the catheter;
- and
- removing the catheter, needle and guidewire as an integrated unit.
A method of placing a medical device into a target vessel with an integrated guidewire advancing device including a catheter operatively connected to a housing, a needle extending along a length of the catheter, a guidewire extending with a lumen of the needle comprising the steps of:
- providing a housing having a predetermined length extending between proximal and distal ends thereof and having an upper surface and proximal and distal end surfaces, a channel defined by at least on said housing surfaces and extending a predetermined distance between said proximal and distal ends of said housing, and a tab slidably positioned within said channel so as to move along the length of the channel;
- supporting guidewire on a rotatable spool within the housing;
- inserting the needle within the target vessel to be treated;
- sliding the tab within the channel proximally, engaging a rack with said tab;
- rotating a gear operatively engaging said rack and rotating the spool to dispense the guidewire;
- advancing the guidewire distally to achieve vascular access;
- and
- removing the catheter, needle and guidewire as an integrated unit.
Dependencies are inferred from the claim text.