Patent
An electrosurgical tubular trocar
Reads0
Chats0
TLDR
An electrosurgical tubular trocar system (10) has a hollow tube (13) substantially longer than its diameter, which is shaped for insertion in a direction generally along its axis through tissue of a human or animal body as mentioned in this paper.Abstract:
An electrosurgical tubular trocar system (10) has a hollow tube (13) substantially longer than its diameter. The tube (13) is shaped for insertion in a direction generally along its axis through tissue of a human or animal body. Distal and proximal ends (17 and 18) on the tube (13) enter and remain outside the tissue, respectively. A tip (19) on the distal end (17) punctures tissue of a human or animal. An insulating portion (20) of high dielectric material extends along the tube (13) between the distal and proximal ends (17 and 18). An electrode (14) on the insulating portion (20) extends from the proximal end (18) to the tip (19) to transmit radio frequency energy. A tip point (19) at an acute angle to the axis lessens the initial force necessary for entry of the tube (13). The return path (16) is a conductor (23) on the insulating portion (20) for bipolar cutting across a gap (25). An alternate system may have the return path (16) as a conductive pad (15) in contact with the tissue as a monopolar circuit. The tube (13) may be in fluid communication for flow.read more
Citations
More filters
Patent
Surgical instrument system configured to evaluate the load applied to a firing member at the initiation of a firing stroke
TL;DR: In this article, a surgical instrument assembly can include an end effector configured to capture tissue, an electric motor couplable with a power supply, and a rotatable drive shaft operably coupled with the electric motor.
Patent
Surgical stapling instrument with lockout features to prevent advancement of a firing assembly unless an unfired surgical staple cartridge is operably mounted in an end effector portion of the instrument
TL;DR: A surgical severing and stapling instrument, suitable for laparoscopic and endoscopic clinical procedures, clamps tissue within an end effector of an elongate channel pivotally opposed by an anvil.
Patent
Stapling instrument for use with a robotic system
TL;DR: A stapling instrument for use with a robotic surgical system is described in this paper, which consists of a housing, a shaft, a loading unit, a firing drive, an articulation drive, and a rotation drive.
Patent
Surgical staple configurations with camming surfaces located between portions supporting surgical staples
TL;DR: In this article, a surgical staple driver is configured for use with a surgical instrument camming member that is axially movable along a first cam axis and a staple supporting portion that is configured to operably support at least one surgical staple thereon relative to the camming surface.
References
More filters
Patent
Gas coagulation device
TL;DR: A device for enhancing the safety and efficiency of a hand-operated electrosurgical pencil having an electrode with a distal end defining a tip for cutting or coagulating biological tissue, which device comprises a nose piece adapted to be mounted about said electrode and containing conduit means defining converging pathways for streams of gas which impinge obliquely on said electrode at or near the tip thereof as discussed by the authors.
Patent
Electrosurgical catheter and method for vascular applications
Thomas O. Bales,Kevin W. Smith +1 more
TL;DR: In this paper, an electrosurgical plaque-resolving or tissue-eroding device is adapted to be inserted within and along the lumen of a blood vessel and manipulated therethrough to a desired position where the device is operated to resolve atherosclerotic plaque buildup or erode tissue in the blood vessel according to the method to re-establish desired blood flow through the vessel or to remove tissue therefrom.
Patent
Radially expandable dilator
William Dubrul,Cecily Hillsman +1 more
TL;DR: In this paper, an apparatus for forming and enlarging percutaneous penetrations comprises an elongate dilation tube (14) which receives an extension member (12) in an axial lumen thereof.
Patent
Self-retaining electrically insulative trocar sleeve and trocar
Harry Reich,Peter Koch +1 more
TL;DR: In this article, a trocar is used to form a puncture in the wall of a patient and then, after the distal end of the sleeve has been inserted in the puncture, the sleeve is rotated to thread the sleeve into the hole to a position to prevent its removal.
Patent
Flat-inclined tip needle
TL;DR: An epidural needle and method of use involving a needle shaft having a first end and a second end with an axial channel extending there between is described in this paper. But the method is not described in detail.