Large-diameter introducer sheath having hemostasis valve and removable steering mechanism
First Claim
1. A catheter introducing system comprising:
- a flexible sheath having a proximal end, a distal end, and a lumen extending therebetween; and
an obturator removably receivable in the lumen of the flexible sheath, said obturator having a proximal end, a distal portion, and a deflecting mechanism actuable from the proximal end of the obturator for laterally deflecting at least the distal portion;
wherein actuation of the deflecting mechanism manipulates the distal end of the sheath when the sheath extends over the distal portion of the obturator.
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Accused Products
Abstract
A catheter introducing system includes an introducer catheter comprising a flexible sheath having a hemostasis valve and an obturator having a steering mechanism operated by a proximal actuator handle. The catheter introducer system will usually be introduced with the obturator inside of the flexible sheath so that the obturator can effect steering by laterally deflecting the distal end of the combined sheath and obturator. Such catheter introducing systems are particularly useful for large diameter sheaths which are not readily introduced over guide wires. A first exemplary hemostasis valve comprises a compressed foam insert having an axial lumen therein. A second exemplary hemostasis valve comprises an elastomeric insert which receives and seals over the catheter.
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Citations
29 Claims
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1. A catheter introducing system comprising:
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a flexible sheath having a proximal end, a distal end, and a lumen extending therebetween; and an obturator removably receivable in the lumen of the flexible sheath, said obturator having a proximal end, a distal portion, and a deflecting mechanism actuable from the proximal end of the obturator for laterally deflecting at least the distal portion; wherein actuation of the deflecting mechanism manipulates the distal end of the sheath when the sheath extends over the distal portion of the obturator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A catheter introducing system comprising:
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a flexible sheath having a proximal end, a distal end, and a lumen extending therebetween; and an obturator removably receivable in the lumen of the flexible sheath, said obturator having a proximal end, a distal portion, and a deflecting mechanism actuable from the proximal end of the obturator for laterally deflecting at least the distal portion; wherein the flexible sheath has a length in the range from about 30 cm to 60 cm and a lumen diameter in the range from about 4 mm to 10 mm and wherein the obturator has a length in the range from 35 cm to 65 cm and an outer diameter in the range from about 4 mm to 9 mm; and wherein actuation of the deflecting mechanism manipulates the distal end of the sheath when the sheath extends over the distal portion of the obturator. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for introducing a flexible sheath to a target location in a body lumen, said method comprising:
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introducing the sheath to the body lumen; advancing the sheath within the lumen toward the target location by laterally deflecting at least a distal portion of an obturator which is removably received in a lumen of the sheath so that the obturator deflects a distal portion of the sheath; and removing the obturator from the sheath to provide an access lumen through the sheath after reaching the target location. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method for introducing a flexible sheath to a target location in a body lumen, said method comprising:
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introducing the sheath to the body lumen; advancing the sheath within the lumen toward the target location by laterally deflecting at least a distal portion of an obturator which is removably received in a lumen of the sheath; manipulating a distal portion of the sheath by deflecting the distal portion of the obturator while the distal portion of the obturator is positioned within the distal portion of the sheath, and while the sheath and obturator are advanced together; and removing the obturator from the sheath to provide an access lumen through the sheath after reaching the target location.
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23. A hemostasis valve comprising:
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a housing having an interior cavity and axially aligned inlet and outlet ports; and a compressible insert disposed within the interior cavity of the housing, said insert including a polymeric foam body having an open axial lumen when the insert is unconfined and an exterior cross-section which is similar to but larger than an interior cross-section of the cavity in the housing, wherein the insert is confined within the cavity to close the lumen with said closed lumen being aligned between the inlet and outlet ports. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification