초록 ▼

An improved electrosurgical instrument is disclosed and claims which includes a reusable electrode shaft, a disposable tip and a novel, insulated coupling for removably connecting the disposable tip to the electrode shaft. The present invention provides several advantages and features. The coupling

An improved electrosurgical instrument is disclosed and claims which includes a reusable electrode shaft, a disposable tip and a novel, insulated coupling for removably connecting the disposable tip to the electrode shaft. The present invention provides several advantages and features. The coupling provides ease in connecting the disposable tip to the reusable electrode shaft in an operating room environment. Once the tip is connected to the shaft, the coupling ensures a rigid and secure connection between the tip and the shaft, such that the coupled tip/shaft assembly feels to the surgeon like a single, unitary instrument. In addition, the coupling ensures a good electrical connection between the tip and the shaft, prevents the tip from inadvertently or accidentally becoming separated from the reusable electrode shaft, and maintains the position of the tip relative to the shaft by preventing the tip from rotating relative to the holder. The coupling also includes an insulating sheath that eliminates any conduction paths between the patient and the electrosurgical instrument other than the surgical tip.

대표청구항 ▼

[ What is claimed and desired to be secured by United States Letters Patent is:] [1.] An improved electrosurgical instrument comprising:an elongated electrically conductive shaft having a proximal end portion, an intermediate body portion, and a distal end portion, wherein the intermediate body port

[ What is claimed and desired to be secured by United States Letters Patent is:] [1.] An improved electrosurgical instrument comprising:an elongated electrically conductive shaft having a proximal end portion, an intermediate body portion, and a distal end portion, wherein the intermediate body portion is covered with an electrically insulative material;an electrosurgical tip having a proximal end portion, an intermediate body portion, and a distal end portion; andmeans for selectively and securely coupling the tip to the distal end portion of the shaft so as to prevent longitudinal and rotational movement of the electrosurgical tip relative to the shaft, the means substantially continually preventing rotational movement of the tip relative to the shaft until the tip and the shaft are substantially disengaged one from the other.