scispace - formally typeset
Patent

Methods and apparatus for surgical cutting

Reads0
Chats0
TLDR
An electrosurgical probe comprises a shaft having an electrode array (12) at its distal end and a connector at its proximal end as mentioned in this paper, which is used to cut or ablate target tissue while heat dissipation through low impedance paths.
Abstract
An electrosurgical probe comprises a shaft having an electrode array (12) at its distal end and a connector at its proximal end. The array (12) includes a plurality of isolated electrode terminals, and an electrosurgical power supply (28) is provided with a multiplicity of independently limited or controlled current sources and a connector. The electrosurgical probe and the power supply may be connected through their respective connectors so that the independent current sources are connected to individual electrode terminals. By applying very high frequency electrical energy to the electrode array, target tissue may be cut or ablated while heat dissipation through low impedance paths, such as blood and normal saline, will be minimized.

read more

Citations
More filters
Patent

Surgical method and apparatus for positioning a diagnostic or therapeutic element within the body and remote power control unit for use with same

TL;DR: In this article, a surgical method and apparatus for positioning a diagnostic or therapeutic element within the body is described, which may be catheter-based or a probe including a relatively short shaft.
Patent

Surgical end effectors and firing members thereof

TL;DR: In this paper, the surgical end effectors can include a first jaw and a second jaw comprising a closure surface and an opening surface, where the second jaw is configured to pivot relative to the first jaw at the pivot joint.
Patent

Surgical instruments with jaw opening features for increasing a jaw opening distance

TL;DR: In this paper, a surgical instrument that includes a first jaw and a second jaw that is pivotally coupled to the first jaw is described. And the second jaw is configured to pivot about a pivot axis that is constrained to only move along a vertical axis and is selectively movable between a fully open position and a fully closed position relative to first jaw.
Patent

Surgical instrument with primary and safety processors

TL;DR: In this paper, a surgical instrument includes a motor operably coupled to a firing member, wherein the motor is configured to generate at least one rotational motion to motivate the firing member to cause staples to be deployed during a firing stroke.
Patent

Surgical instruments with lockout arrangements for preventing firing system actuation unless an unspent staple cartridge is present

TL;DR: In this paper, the first and second jaws are supported for selective movement between an open position and a closed position relative to each other, and a lock member is movable between an unlocked configuration that corresponds to an open location of the jaws and a locked configuration wherein the lock member prevents a firing member from being moved from a starting position within the end effector unless a surgical staple cartridge that has cam assembly located in an unfired position is supported within the first jaw.
References
More filters
Patent

Medical probe device and method

TL;DR: A medical probe device comprises a catheter having a stylet guide housing with one or more stylet ports in a side wall of the probe, which can be used to direct a flexible stylet outward through the stylet port and through intervening tissue at a preselected, adjustable angle to a target tissue as discussed by the authors.
Patent

Method and apparatus for providing enhanced tissue fragmentation and/or hemostatis

TL;DR: In this paper, a vibratable tip for ultrasonically disintegrating tissue in a surgical procedure and for aspirating the disintegrated tissue and fluids away from the surgical site through an opening in the tip was presented.
Patent

Electrosurgical bipolar treating apparatus

TL;DR: An electrosurgical bipolar treating apparatus comprising a handpiece to which is connected a first active electrode and a second return electrode having exposed distal ends which define a bipolar tip for electrosurgically treating tissue at an operational site on a patient, which tip is structured so that both distal end simultaneously contact said tissue and wherein the active electrode has a higher tissue to electrode impedance than the return electrode as mentioned in this paper.
Patent

Ablation catheter with selectively deployable electrodes

TL;DR: In this article, a catheter with a tip member which during the initial placement of the catheter within the vascular system so that the distal tip member is disposed in a working relation with the lesion to be removed is described.
Patent

Method and apparatus for controlled contraction of soft tissue

TL;DR: In this paper, a handpiece and an electrode with an electrode proximal end (16) associated with the handpiece are used to control contraction of tissue that includes collagen fibers.