Vascular sheath
First Claim
1. A vascular sheath apparatus for placement of a medical device through a perforation in a side wall of a patient'"'"'s blood vessel, comprising:
- an elongated cylindrical sheath having a distal end portion constructed to be received through said perforation and in said blood vessel, said sheath having a generally cylindrical outer surface and having a longitudinal axis;
an annular expandable sealing means disposed about said sheath and expandable radially outward beyond said outer surface of said sheath, said sealing means lying generally in a plane oriented at an acute angle to said longitudinal axis of said sheath where said sheath passes through said sealing means; and
a clamp slidably disposed on said sheath proximally of said sealing means, said sealing means and said clamp being so arranged and constructed that with said distal end portion of said sheath extending through said perforation into said vessel and said sealing means expanded inside said vessel, said clamp is slidable along said sheath toward said sealing means to sandwich said vessel side wall and the patient'"'"'s body tissue external of said vessel between said sealing means and said clamp to reduce bleeding through said perforation around said sheath.
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Accused Products
Abstract
A vascular sheath apparatus is used for placement of a medical device through a perforation in a side wall of a patient'"'"'s blood vessel. An elongated cylindrical sheath has a distal end portion constructed to be received through the blood vessel. An annular expandable sealing device is disposed about the sheath and expandable radially outward beyond the outer surface of the sheath. The sealing device preferably lies generally in a plane oriented at an acute angle to the longitudinal axis of the sheath. A clamp is slidably disposed on the sheath proximally of the sealing device and can slide toward the sealing device so as to sandwich the vessel wall and overlying tissue between the clamp and the expanded sealing device. The sealing device may be either an inflatable balloon or an accordion fold. Other features include the particular geometry of the clamp which makes it especially suited for use in clamping a sheath in place in the femoral artery.
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Citations
53 Claims
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1. A vascular sheath apparatus for placement of a medical device through a perforation in a side wall of a patient'"'"'s blood vessel, comprising:
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an elongated cylindrical sheath having a distal end portion constructed to be received through said perforation and in said blood vessel, said sheath having a generally cylindrical outer surface and having a longitudinal axis; an annular expandable sealing means disposed about said sheath and expandable radially outward beyond said outer surface of said sheath, said sealing means lying generally in a plane oriented at an acute angle to said longitudinal axis of said sheath where said sheath passes through said sealing means; and a clamp slidably disposed on said sheath proximally of said sealing means, said sealing means and said clamp being so arranged and constructed that with said distal end portion of said sheath extending through said perforation into said vessel and said sealing means expanded inside said vessel, said clamp is slidable along said sheath toward said sealing means to sandwich said vessel side wall and the patient'"'"'s body tissue external of said vessel between said sealing means and said clamp to reduce bleeding through said perforation around said sheath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A vascular sheath apparatus, comprising:
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a sheath means for guiding a medical device through a perforation in a side wall of a patient'"'"'s blood vessel into said blood vessel; an annular, radially expandable sealing means, disposed about said sheath means, for sealing against an inner surface of said blood vessel surrounding said perforation when a longitudinal axis of said sheath extending proximally from said perforation is oriented at an acute angle to a longitudinal axis of said blood vessel; and clamping means for clamping said vessel side wall and the patient'"'"'s body tissue external of said vessel between said sealing means and said clamping means for reducing bleeding through said perforation around said sheath means. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A vascular sheath apparatus for placement of a medical device through a perforation in a side wall of a patient'"'"'s blood vessel, comprising:
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an elongated sheath having a longitudinal axis; an annular expandable sealing means disposed about said sheath; and a clamp slidably disposed on said sheath proximally of said sealing means, said clamp having an upper portion tilted in a distal direction relative to said longitudinal axis of said sheath where said sheath passes through said clamp. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A vascular sheath apparatus for placement of a medical device through a perforation in a side wall of a patient'"'"'s blood vessel and through an incision in the patient'"'"'s body tissue overlying said blood vessel and for concurrent application of a treatment fluid into said incision, comprising:
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an elongated sheath having a treatment fluid passage defined therein; an annular expandable sealing means disposed about said sheath; a clamp slidably disposed on said sheath proximally of said sealing means; and said sheath having an outer surface and having a treatment fluid port defined in said sheath communicating said treatment fluid passage with said outer surface, said treatment fluid port being arranged so that when said sheath is received through said incision in the patient'"'"'s body tissue and through said perforation in said vessel with said sealing means expanded inside the vessel around said perforation and with the vessel side wall and the patient'"'"'s body tissue overlying said vessel sandwiched between said sealing means and said clamp, said treatment fluid port is positioned between said sealing means and said clamp to deliver a treatment fluid into said incision. - View Dependent Claims (31, 32, 33)
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34. A surgical sheath apparatus for placement of a medical apparatus through a perforation in a tissue wall into a cavity in a patient'"'"'s body, comprising:
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an elongated cylindrical sheath having a radially expandable accordion fold defined therein, said sheath having a proximal end and a distal end; and a clamp slidably disposed on said sheath proximally of said accordion fold, said accordion fold and said clamp being so arranged and constructed that with said distal end of said sheath extending through said perforation into said cavity and with said accordion fold expanded inside said cavity, said clamp is slidable along said sheath toward said accordion fold to sandwich said tissue wall and the patient'"'"'s body tissue external of said cavity between said accordion fold and said clamp. - View Dependent Claims (35, 36)
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37. A surgical sheath apparatus for placement of a medical apparatus through a perforation in a tissue wall into a cavity in a patient'"'"'s body, comprising:
an elongated cylindrical sheath having an accordion fold defined therein, said sheath being movable between a first position wherein said accordion fold is radially contracted so that said accordion fold may be received through said perforation, and a second position wherein said accordion fold is in a radially expanded position so as to prevent said accordion fold from passing back through said perforation. - View Dependent Claims (38, 39)
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40. A method of reducing bleeding during vascular surgery, comprising:
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(a) providing a vascular sheath assembly including; an elongated sheath having a proximal end and a distal end; and an annular expandable sealing means disposed about said sheath; (b) inserting said distal end of said sheath and said sealing means through a perforation in a side wall of a patient'"'"'s blood vessel and into the blood vessel; (c) expanding said sealing means inside the blood vessel; (d) applying and maintaining a tension force to said elongated sheath; and (e) thereby compressing said sealing means against an annular area of an inside surface of the vessel side wall surrounding the perforation and sealing against leakage of blood from the blood vessel out through the perforation around said sheath. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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Specification