Surgical Instrument and Method for Use Thereof
a surgical instrument and a technology for detecting the current, applied in the field of surgical instruments, can solve the problems of unintuitive, difficult to predict the current route, and unintentional damage to nearby tissue,
Inactive Publication Date: 2011-01-06
RGT UNIV OF MICHIGAN
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AI Technical Summary
Benefits of technology
The system effectively minimizes thermal spread and reduces the risk of tissue damage by creating gradients that increase tissue resistance and facilitate heat conduction, as demonstrated by experimental results showing reduced temperature ratios and minimized thermal damage even at close distances from the tool edge.
Problems solved by technology
Despite their advantages, the success of EBSDs has been tempered by the recognition that these devices can lead to collateral tissue damage due to thermal and / or electrical spread outward from the instrument.
This makes predicting the route current will take very difficult and not intuitive, and may lead to unintentionally damaging nearby tissue.
In addition, medical personnel may not always be able to visualize the thermal spreading because of obstructing tissue structures, especially during an endoscopic procedure.
The limited field of view and narrow focus on a small area may allow thermal spread to occur unnoticed, potentially causing damage to vital structures.
When performing electrosurgery or ultrasurgery in a laparoscopic environment, the presence of an insufflating gas having a low heat capacity may result in instruments not cooling as rapidly, which may further increase the potential for thermal damage.
Method used
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[0022]As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale, some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.
[0023]The present invention includes a surgical instrument and method for use thereof for controlling, minimizing, and monitoring the spread of thermal energy during any type of surgery. In accordance with the present invention, thermal and / or pressure gradients may be created in the treated tissue to alleviate thermal spread.
[0024]A perspective view of a surgical instrument system according to t...
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A surgical instrument for treating a tissue includes a handpiece and a tissue engaging portion arranged to be received by the handpiece. The tissue engaging portion includes first and second opposed jaw members having an open position and a closed position for engaging the tissue therebetween, where the first and second jaw members are arranged to receive surgical energy from a surgical generator. The tissue engaging portion further includes at least one cooling member spaced from at least one of the first and second jaw members, where the cooling member has an open position and a closed position for engaging the tissue. Positioning the jaw members in their closed position and applying surgical energy to the tissue allows for treatment of the tissue, and positioning the cooling member in its closed position provides at least one of a pressure gradient or a thermal gradient between the jaw members and the cooling member.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of U.S. application Ser. No. 11 / 626,812 filed Jan. 24, 2007 which, in turn, claims the benefit of U.S. provisional Application Ser. No. 60 / 761,901 filed Jan. 25, 2006, the disclosure(s) of which are incorporated in their entirety by reference herein.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]This invention relates to a surgical instrument, such as an energy based surgical device.[0004]2. Background Art[0005]Energy-based surgical devices (EBSDs),which use a variety of energy sources (electrical, radio frequency, and ultrasonic), have been adopted widely for nearly all types of surgery due to their ability to effectively and rapidly control bleeding EBSDs have been adopted widely for nearly all types of surgery including neurosurgery, orthopedics, gynecology, urology, general surgery, thoracic surgery, plastic surgery, and otolaryngology. Despite their advantages, the success of EBSDs ha...
Claims
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IPC IPC(8): A61B18/02
CPCA61B18/1445A61B2018/00047A61B2018/00023A61B2018/00011
InventorDODDE, ROBERTSHIH, ALBERT J.GEIGER, JAMESROBERTS, WILLIAMPIPE, KEVINADVINCULA, ARNOLD
OwnerRGT UNIV OF MICHIGAN