Electrosurgical Sealer and Divider

a technology of electronic sealing and divider, applied in the field of electronic surgical instruments, can solve the problems of tissue sticking between the end effectors in use, and achieve the effect of reducing the risk of injury

Inactive Publication Date: 2020-10-15
JUST RIGHT SURGICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The device effectively seals and cuts tissue with minimal thermal spread, meeting regulatory safety standards and reducing the risk of damage to surrounding tissue, while maintaining a small footprint suitable for use in smaller cannulas.

Problems solved by technology

The LigaSure tool is known to apply a cycling power that has a sealing power of between 180 Watts and 300 Watts to tissue to cause the tissue to seal, and the tool is prone to cause tissue to stick between the end effectors in use.

Method used

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  • Electrosurgical Sealer and Divider
  • Electrosurgical Sealer and Divider
  • Electrosurgical Sealer and Divider

Examples

Experimental program
Comparison scheme
Effect test

examples

[0098]With reference now to Table 1, an electrosurgical instrument according to embodiments described herein was tested on 5 seals. The jaws of the instrument had a sealing surface of about 57 square millimeters, and a coating on a portion of the jaws provided for a recessed sealing surface relative to the coating. The sealing surface was recessed by at least 0.101 millimeters on each jaw, and stops provided for a gap of about 0.127 millimeters between the jaws during sealing. The device was set to nominal output settings of 50 Watts maximum power, 100 Volts maximum voltage, and 2.5 Amperes maximum current. The device was also set to cease the application of power when impedance to energy passing through the tissue reached 250 Ohms.

[0099]The device was used to apply the 5 seals listed in Table 1.

[0100]Each of the seals were cut and examined after sealing, and were determined to be of excellent quality. Specifically, the seals were found to be transparent, with a clean edge (transfer...

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PUM

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Abstract

An electrosurgical instrument has a movable tissue cutting mechanism, a shaft housing at least a portion of the movable tissue cutting mechanism, and a pair of opposing jaws rotatable relative to the shaft. Each jaw has an electrically conductive core member, a slot for receiving the cutting mechanism, and a sealing surface. A pin is coupled to the shaft and the jaws. The pin passes through the jaws and the cutting mechanism. A first link is rotatably coupled to the first jaw and a rod. The rod is interior of and translatable relative to the shaft. Each jaw has a coating made of a substantially non-conductive material covering a portion of the conductive core member but exposing the seal surface, whereby the coating limits an energy path from the respective conductive medium to the respective seal surface.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. Utility application Ser. No. 16 / 155,966 filed on Oct. 10, 2018 and entitled “ELECTROSURGICAL SEALER AND DIVIDER,” which is a continuation-in-part of and claims priority to U.S. Utility application Ser. No. 15 / 487,856 filed on Apr. 14, 2017 and entitled “ELECTROSURGICAL SEALER AND DIVIDER,” which claims priority to U.S. Provisional Application No. 62 / 323,030 filed on Apr. 15, 2016 and entitled “ELECTROSURGICAL SEALER AND DIVIDER.” The entire disclosures of these priority documents are hereby incorporated by reference for all proper purposes.FIELD OF THE INVENTION[0002]This invention is related to medical devices. Specifically, but not intended to limit the invention, embodiments of the invention are related to an electrosurgical instrument for cutting and sealing tissue.BACKGROUND OF THE INVENTION[0003]A number of electrosurgical devices for cutting and sealing tissue are known in the field.[0004]...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): A61B18/14A61B18/08
CPCA61B18/1445A61B18/1206A61B18/1492A61B18/085A61B2018/00136A61B2018/00607A61B2018/00708A61B2018/1455A61B2018/00083A61B2018/126A61B2018/00875A61B2018/00601A61B2018/146A61B2018/0063
InventorBUCCIAGLIA, JOSEPH D.SCHMALTZ, DALEKENNEDY, JENIFERKUCHTA, CASEYCHRISTOFFERSEN, ANDREWDEBORSKI, CHRISTOPHER
OwnerJUST RIGHT SURGICAL