Sheath introduction apparatus and method
First Claim
1. A sheath system for enabling access through an opening in the body of a patient, the sheath system comprising:
- a dilation assembly having a radially expandable tubular sheath defining a lumen having a first cross-sectional area when in a non-expanded condition, and a handle assembly operatively coupled to a proximal end of the tubular sheath;
a fluid delivery system supported on the dilation assembly, the fluid delivery system defining a fluid passage extending through the handle assembly of the dilation assembly, wherein an inlet of the fluid passage is located on an outer surface of the handle assembly and an outlet of the fluid passage opens into the lumen of the dilation assembly; and
an expansion assembly including a tubular member defining a lumen having a second cross-sectional area which is larger than the first cross-sectional area of the tubular sheath of the dilation assembly, the tubular member having an outer surface defining a first thread formed along substantially an entire length of the tubular member from a location at least in close proximity to a distal end of the tubular member to a location in close proximity to a proximal end of the tubular member, wherein the first thread of the tubular member of the expansion assembly tents the radially expandable tubular sheath of the dilation assembly radially away from the tubular member to thereby define a helical passageway therearound for communicating a fluid from outside a target surgical site to the target surgical site.
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Accused Products
Abstract
The present disclosure relates to a sheath system for enabling access through an opening in the body of a patient is provided. The sheath system includes a dilation assembly having a radially expandable tubular sheath defining a lumen having a first cross-sectional area when in a non-expanded condition, and a handle assembly operatively coupled to a proximal end of tubular sheath, the handle assembly defining an aperture formed therein, and a first thread defined on the handle in the aperture thereof. The sheath system further includes an expansion assembly including a tubular member defining a lumen having a second cross-sectional area which is larger than the first cross-sectional area of the tubular sheath of the dilation assembly and having an outer surface defining a second thread, the second thread being arranged for engaging the first thread.
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Citations
25 Claims
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1. A sheath system for enabling access through an opening in the body of a patient, the sheath system comprising:
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a dilation assembly having a radially expandable tubular sheath defining a lumen having a first cross-sectional area when in a non-expanded condition, and a handle assembly operatively coupled to a proximal end of the tubular sheath; a fluid delivery system supported on the dilation assembly, the fluid delivery system defining a fluid passage extending through the handle assembly of the dilation assembly, wherein an inlet of the fluid passage is located on an outer surface of the handle assembly and an outlet of the fluid passage opens into the lumen of the dilation assembly; and an expansion assembly including a tubular member defining a lumen having a second cross-sectional area which is larger than the first cross-sectional area of the tubular sheath of the dilation assembly, the tubular member having an outer surface defining a first thread formed along substantially an entire length of the tubular member from a location at least in close proximity to a distal end of the tubular member to a location in close proximity to a proximal end of the tubular member, wherein the first thread of the tubular member of the expansion assembly tents the radially expandable tubular sheath of the dilation assembly radially away from the tubular member to thereby define a helical passageway therearound for communicating a fluid from outside a target surgical site to the target surgical site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of using a sheath system to enable access through an opening in the body of a patient, comprising:
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providing a dilation assembly including a housing defining an aperture and a first thread in the aperture, and a radially expandable sheath extending from the housing and defining a lumen that is aligned with the aperture of the housing, the radially expandable sheath having a first cross-sectional dimension; inserting the radially expandable sheath of the dilation assembly into the opening in the body of the patient; providing an expansion assembly including a substantially rigid tubular member with an outer surface defining a second thread formed along substantially an entire length of the tubular member from a location at least in close proximity to a distal end of the tubular member to a location in close proximity to a proximal end of the tubular member; introducing the expansion assembly into the lumen of the radially expandable sheath of the dilation assembly to radially expand the lumen of the radially expandable sheath of the dilation assembly and the opening in the body of the patient, the introduction including engaging the first thread with the second thread to axially advance the tubular member along the entire length thereof through the tubular sheath, wherein the second thread of the tubular member of the expansion assembly tents the radially expandable sheath of the dilation assembly radially away from the tubular member to thereby define a helical passageway therearound for communicating a fluid from outside the body of the patient to a location inside the body of the patient; and injecting a fluid into a proximal end of the helical passageway that is disposed outside of the body of the patient to communicate the fluid to the location inside the body of the patient via the helical passageway. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification