Surgical micro-resecting instrument with electrocautery and continuous aspiration features
First Claim
1. A surgical micro-resecting instrument for use with an ENT procedure, the instrument comprising:
- an outer tubular member formed of an electrically conductive material and defining a proximal section, a distal section, and a lumen, wherein the distal section forms a cutting window open to the lumen and an axial passage distal the cutting window, the axial passage being fluidly connected to the lumen;
an inner tubular member disposed within the lumen of the outer tubular member, the inner tubular member defining a proximal portion and a distal portion, wherein the distal portion forms a cutting tip;
a hub assembly maintaining the proximal section of the outer tubular member and the proximal portion of the inner tubular member; and
an electrical insulator covering a region of the outer tubular member distal the hub assembly, wherein at least the cutting window is not covered by the insulator.
1 Assignment
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Accused Products
Abstract
A surgical micro-resecting instrument including an outer tubular member, an inner tubular member, a hub assembly, and an electrical insulator. The outer tubular member is formed of an electrically conductive material and defines a proximal section, a distal section, and a lumen. The distal section forms an axial passage distal a cutting window, both of which are fluidly connected to the lumen. The inner tubular member is disposed within the lumen and defines a distal portion that forms a cutting tip. The hub assembly maintains the inner and outer tubular members. The electrical insulator covers a region of the outer tubular member distal the hub assembly. In this regard, at least the cutting window is not covered by the electrical insulator for cauterizing contacted tissue via the energy. The axial passage facilitates continuous aspiration.
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Citations
37 Claims
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1. A surgical micro-resecting instrument for use with an ENT procedure, the instrument comprising:
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an outer tubular member formed of an electrically conductive material and defining a proximal section, a distal section, and a lumen, wherein the distal section forms a cutting window open to the lumen and an axial passage distal the cutting window, the axial passage being fluidly connected to the lumen;
an inner tubular member disposed within the lumen of the outer tubular member, the inner tubular member defining a proximal portion and a distal portion, wherein the distal portion forms a cutting tip;
a hub assembly maintaining the proximal section of the outer tubular member and the proximal portion of the inner tubular member; and
an electrical insulator covering a region of the outer tubular member distal the hub assembly, wherein at least the cutting window is not covered by the insulator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A surgical micro-resecting system comprising:
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a micro-resecting instrument including;
an outer tubular member formed of an electrically conductive material and defining a proximal section, a distal section, and a lumen, wherein the distal section forms a cutting window open to the lumen and an axial passage distal the cutting window, the axial passage being fluidly connected to the lumen;
an inner tubular member disposed within the lumen of the outer tubular member, the inner tubular member defining a proximal portion and a distal portion, wherein the distal portion forms a cutting tip;
a hub assembly maintaining the proximal section of the outer tubular member and the proximal portion of the inner tubular member; and
an electrical insulator covering a region of the outer tubular member distal the hub assembly, wherein at least the cutting window is not covered by the insulator;
a powered surgical handpiece coupled to the proximal portion of the inner tubular member for driving the inner tubular member relative to the outer tubular member;
an energy source; and
wiring electrically connecting the energy source to the outer tubular member. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for performing a micro-resecting operation at a target site of a patient as part of an ENT surgical procedure, the method comprising:
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providing a micro-resecting instrument including an outer tubular member having a lumen and a distal section forming a cutting window and an axial passage distal the cutting window, the cutting window and the axial passage being fluidly connected to the lumen, an inner tubular member disposed within the lumen and having a distal portion forming a cutting tip, a hub assembly maintaining the proximal section of the outer tubular member and the proximal portion of the inner tubular member, and an electrical insulator covering a region of the outer tubular member distal the hub assembly such that at least the cutting window is not covered by the insulator;
delivering the distal section of the outer tubular member to the target site such that the cutting window is located at the target site and the cutting tip is located within the cutting window;
driving the inner tubular member relative to the outer tubular member such that the cutting tip resects tissue at the target site to effectuate a portion of an ENT procedure;
supplying energy to an exposed region of the distal section of the outer tubular member; and
cauterizing tissue at the target site via the energized exposed region. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
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Specification