Apparatus and method for treatment of ethmoid sinusitis
First Claim
1. An apparatus comprising:
- (a) a rotating member, wherein the rotating member includes;
(i) a shaft defining a longitudinal axis,(ii) a helical blade arranged distally of the shaft, and(iii) a tip arranged at a distal end of the helical blade, wherein the tip extends distally and coaxially along the longitudinal axis; and
(b) a translating member positioned coaxially about the rotating member, wherein a distal end of the translating member includes a cutting edge,wherein the rotating member is configured to rotate relative to the translating member, and the translating member is configured to translate proximally and distally relative to the rotating member,wherein the helical blade, the tip, and the cutting edge are sized to be received within a nasal cavity of a patient and are configured to advance through a sinus wall of the patient.
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Abstract
An apparatus may be used to form an opening in a sinus wall. The apparatus comprises a first cutting member and a second cutting member. The first cutting member comprises a helical blade. The second cutting member is slidably disposed about the first cutting member. The second cutting member comprises a sharp distal edge. An outer sheath is slidably disposed about the first and second cutting member. The sheath may be retracted to uncover the helical blade. The second cutting member may be advanced over the first cutting member to form a circular opening in the sinus wall. The sheath may include an obliquely angled distal edge. A cleaning instrument may be used to clean debris from the first cutting member.
848 Citations
20 Claims
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1. An apparatus comprising:
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(a) a rotating member, wherein the rotating member includes; (i) a shaft defining a longitudinal axis, (ii) a helical blade arranged distally of the shaft, and (iii) a tip arranged at a distal end of the helical blade, wherein the tip extends distally and coaxially along the longitudinal axis; and (b) a translating member positioned coaxially about the rotating member, wherein a distal end of the translating member includes a cutting edge, wherein the rotating member is configured to rotate relative to the translating member, and the translating member is configured to translate proximally and distally relative to the rotating member, wherein the helical blade, the tip, and the cutting edge are sized to be received within a nasal cavity of a patient and are configured to advance through a sinus wall of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus comprising:
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(a) a rotating member, wherein the rotating member includes; (i) a major shaft defining a longitudinal axis, (ii) a minor shaft extending distally from a distal end of the major shaft, and (iii) a helical blade arranged on the minor shaft, wherein a proximal end of the helical blade is spaced axially from a distal end of the major shaft; and (b) a translating member positioned coaxially about the rotating member, wherein a distal end of the translating member includes a cutting edge, wherein the rotating member is configured to rotate freely relative to the translating member, and the translating member is configured to translate proximally and distally relative to the rotating member, wherein the helical blade, the tip, and the cutting edge are configured to advance through a sinus wall of a patient. - View Dependent Claims (17, 18)
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19. An apparatus comprising:
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(a) a rotating member, wherein the rotating member includes; (i) a shaft defining a longitudinal axis, (ii) a tip arranged at a distal end of the shaft, and (iii) a helical blade arranged distally of the shaft and proximally of the tip, wherein the helical blade tapers distally toward the tip; (b) a translating member positioned coaxially about the rotating member, wherein a distal end of the translating member includes a cutting edge; and (c) an outer sheath positioned coaxially about the translating member, wherein the outer sheath is retractable proximally relative to the rotating member to expose a distal end of the rotating member, wherein the rotating member is rotatable about the longitudinal axis to advance the helical blade distally through a sinus wall of a patient, wherein the translating member is translatable distally along the longitudinal axis relative to the rotating member to advance the cutting edge through the sinus wall and thereby form an opening in the sinus wall. - View Dependent Claims (20)
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Specification