Ultrasonic surgical shears and method for sealing a blood vessel using same
AssigneeEthicon Endo-Surgery, Inc.
InventorsKevin L. Houser, Sarah A. Noschang
Life of this patent
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Abstract
An ultrasonic surgical shears includes an ultrasonic surgical blade, a clamping arm operable to open and close toward the blade, and a tissue pad attached to the clamping arm. A method for sealing a blood vessel of a patient includes obtaining an ultrasonic surgical shears and positioning the blood vessel between the blade and the tissue pad. The clamping arm is operated to exert an average coaptation pressure on the blood vessel between and including 60 psi and 210 psi. The blade is ultrasonically vibrated to transect and seal the blood vessel.
Claims25
A method for sealing a blood vessel of a patient comprising the steps of:
- a) obtaining an ultrasonic surgical shears including an ultrasonic surgical blade, a clamping arm operable to open and close toward the blade, a tissue pad attached to the clamping arm, wherein the blade and tissue pad define a clamping surface area when the blade and tissue pad are in close proximity, a spring to limit the amount of an applied force the clamp arm exerts on the clamping surface area;
- b) disposing the blood vessel between the blade and the tissue pad;
- c) operating the clamping arm to exert a predetermined average coaptation pressure between and including 120 psi and 210 psi at the clamping surface area;
- and
- d) ultrasonically vibrating the blade to transect and seal the blood vessel.
An ultrasonic surgical shears comprising:
- a) an ultrasonic surgical blade;
- b) a clamping arm operable to open and close toward the blade;
- c) a tissue pad attached to the clamping arm;
- and
- d) a spring for limiting an average clamping force, wherein the blade and tissue pad define a clamping surface area and the average clamping force provides for an average clamping pressure between and including 120 psi and 210 psi at the clamping surface area.
An ultrasonic surgical shears comprising:
- a) an ultrasonic surgical blade;
- b) a clamping arm operable to open and close toward the blade;
- c) a tissue pad attached to the clamping arm, wherein the blade and tissue pad define a clamping surface area when the blade and tissue pad are in close proximity;
- and
- d) a spring for limiting an average predetermined clamping force, wherein the average predetermined clamping force divided by the clamping surface area is between and including 120 psi and 210 psi on tissue disposed on the clamping surface area.
A method for sealing a blood vessel of a patient comprising the steps of:
- a) obtaining an ultrasonic surgical shears including an ultrasonic surgical blade, a clamping arm operable to open and close toward the blade, a tissue pad attached to the clamping arm, wherein the blade and tissue pad define a clamping surface area when the blade and tissue pad are in close proximity, a spring to limit the amount of an applied force the clamp arm exerts on the clamping surface area;
- b) disposing the blood vessel between the blade and the tissue pad;
- c) operating the clamping arm to exert an average coaptation pressure between and including 120 psi and 210 psi at the clamping surface area;
- and
- d) ultrasonically vibrating the blade to transect and seal the blood vessel.
An ultrasonic surgical shears comprising:
- a) an ultrasonic surgical blade;
- b) a clamping arm operable to open and close toward the blade;
- c) a tissue pad attached to the clamping arm;
- and
- d) a spring for limiting a clamping force, wherein the blade and tissue pad define a clamping surface area and wherein the spring limits the clamping force to obtain a clamping pressure between and including 120 psi and 210 psi at the clamping surface area.
An ultrasonic surgical shears comprising:
- a) an ultrasonic surgical blade;
- b) a clamping arm operable to open and close toward the blade;
- c) a tissue pad attached to the clamping arm, wherein the blade and tissue pad define a clamping surface area when the blade and tissue pad are in close proximity;
- and
- d) a spring for limiting a clamping force, wherein the clamping force divided by the clamping surface area is between and including 120 psi and 210 psi on tissue disposed on the clamping surface area.
An ultrasonic surgical shears comprising:
- a) an ultrasonic surgical blade;
- b) a clamping arm operable to open and close toward the blade;
- c) a tissue pad attached to the clamping arm;
- and
- d) a spring for transferring a clamping force, wherein the blade and tissue pad define a clamping surface area and wherein the spring transfers the clamping force to obtain a clamping pressure between and including 120 psi and 210 psi at the clamping surface area.
Dependencies are inferred from the claim text.