Patent•
A carriage assembly for controlling a steering wire steering mechanism within a flexible shaft
21 Feb 2001-
TL;DR: In this article, a carriage assembly for controlling a steering wire steering mechanism within a flexible shaft, for use in gastrointestinal tract surgery, comprises a plurality of selectable engageable motors, including two drive motors for selectably rotating drive shafts of a surgical attachement, two steering motors mechanically communicating with corresponding pulleys around which are coiled directional steering wires communicating with a rigid flexible shaft to enable the selective direction of the flexible shaft.
Abstract: A carriage assembly for controlling a steering wire steering mechanism within a flexible shaft, for use in gastrointestinal tract surgery, comprises a plurality of selectably engageable motors, including two drive motors for selectably rotating drive shafts of a surgical attachement, two steering motors mechanically communicating with corresponding pulleys around which are coiled directional steering wires communicating with a flexible shaft to enable the selective direction of the flexible shaft within a spatial plane, wherein within the assembly housing the steering motors travel on a steering motor carriage and the pulleys travel on a pulley carriage which is biased by a spring means away from the interior wall of the housing, which biases the steering wires toward a taut state. The bias can be overcome by a carriage motor mechanically communicating with the pulley carriage to cause the flexible shaft to go limp. Also disclosed are a series of surgical attachments which may be coupled to and utilized in conjunction with the carriage assembly.
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Patent•
10 Jun 2011
TL;DR: In this article, a surgical stapling device particularly suited for endoscopic procedures is described, which includes a handle assembly and an elongated body extending distally from the handle assembly.
Abstract: A surgical stapling device particularly suited for endoscopic procedures is described The device includes a handle assembly and an elongated body extending distally from the handle assembly The distal end of the elongated body is adapted to engage a disposable loading unit A control rod having a proximal end operatively connected to the handle assembly includes a distal end extending through the elongated body A control rod locking member is provided to prevent movement of the control rod until the disposable loading unit is fully secured to the elongated body of the stapling device
2,013 citations
Patent•
30 Sep 2004
TL;DR: In this paper, a surgical stapling instrument (1) comprises a body portion (2, 3), a handle (4), and a staple fastening assembly (8), which includes a curved cartridge (10), which comprises at least one curved open row of staples, and a curved anvil (22), which is adapted to cooperate with the cartridge for forming the ends of the staples exiting from the cartridge.
Abstract: A surgical stapling instrument (1) comprises a body portion (2, 3), a handle (4) and a staple fastening assembly (8). The staple fastening assembly (8) includes a curved cartridge (10), which comprises at least one curved open row of staples, and a curved anvil (22), which is adapted to cooperate with the cartridge (10) for forming the ends of the staples exiting from the cartridge (10). The staple fastening assembly (8) is adapted to allow unobstructed access towards the concave inner faces of the cartridge (10) and the anvil (22). The cartridge (10) can be moved towards the anvil (22) from a spaced position for positioning tissue therebetween to a closed position for clamping the tissue. Preferably, a knife is contained within the cartridge (10) and is positioned such that there is at least one row of staples on at least one side of the knife.
1,502 citations
Patent•
14 Jun 2016
TL;DR: Newness and distinctiveness is claimed in the features of ornamentation as shown inside the broken line circle in the accompanying representation as discussed by the authors, which is the basis for the representation presented in this paper.
Abstract: Newness and distinctiveness is claimed in the features of ornamentation as shown inside the broken line circle in the accompanying representation.
1,500 citations
Patent•
21 Apr 2011TL;DR: In this paper, a surgical instrument can comprise a channel configured to support a staple cartridge and, in addition, an anvil pivotable between open and closed positions relative to the channel.
Abstract: A surgical instrument can comprise a channel configured to support a staple cartridge and, in addition, an anvil pivotable between open and closed positions relative to the channel. The surgical instrument can further comprise a cutting member configured to incise tissue positioned captured between the staple cartridge and the anvil and, in addition, means for stopping the cutting member prior to a distal end datum, wherein the distal end datum can be defined by the distal-most staple cavity in the staple cartridge. In such embodiments, the incision within the tissue may not extend beyond the portion of the tissue that has been stapled.
1,498 citations
Patent•
20 Sep 2016TL;DR: In this article, an E-beam firing bar is used to drive staples on each side of the cut in a surgical severing and stapling instrument, which is suitable for laparoscopic and endoscopic clinical procedures, clamps tissue within an end effector of an elongate channel pivotally opposed by an anvil.
Abstract: 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. An E-beam firing bar moves distally through the clamped end effector to sever tissue and to drive staples on each side of the cut. The E-beam firing bar affirmatively spaces the anvil from the elongate channel to assure properly formed closed staples, especially when an amount of tissue is clamped that is inadequate to space the end effector. In particular, an upper pin of the firing bar longitudinally moves through an anvil slot and a channel slot is captured between a lower cap and a middle pin of the firing bar to assure a minimum spacing. Forming the E-beam from a thickened distal portion and a thinned proximal strip enhances manufacturability and facilitates use in such articulating surgical instruments.
1,384 citations
References
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Patent•
20 Jun 1996
TL;DR: In this article, an electrosurgical instrument for the treatment of tissue in the presence of an electrically-conductive fluid was disclosed, consisting of an instrument shaft (32), and a tissue treatment electrode (31) at one end of the shaft.
Abstract: An electrosurgical instrument is disclosed for the treatment of tissue in the presence of an electrically-conductive fluid. The instrument comprises an instrument shaft (32), and a tissue treatment electrode (31) at one end of the shaft, the tissue treatment electrode being constructed to define a plurality of pockets for trapping electrically-conductive fluid. Alternatively, the tissue treatment electrode (81) is made from an electrically-conductive material (81a) and is coated with a resistive inert material (81b) which is effective to increase the local power density within the tissue treatment electrode.
3,721 citations
Patent•
22 Apr 1994
TL;DR: In this article, a surgical device for stapling and fastening body tissues, consisting of an insertion section extending from an operation section for insertion into a body cavity, and a stitching member connected to a distal end of the insertion section, for treating body tissues with a high-frequency current within the body cavity.
Abstract: A surgical device for stapling and fastening body tissues, comprises an insertion section extending from an operation section for insertion into a body cavity, stapling member connected to a distal end of the insertion section, for treating body tissues with a high-frequency current within a body cavity. The stapling member includes an anvil and a cartridge between which the tissues are sandwiched, and a cutter. Staples are applied to the anvil from the cartridge for stapling the tissues and the cutter cuts the tissue while it applies a high-frequency current thereto.
1,972 citations
Patent•
21 Jul 1994TL;DR: An electrosurgical instrument is provided for cauterization and/or welding of tissue of varying impedances, thicknesses and vascularity especially in the performance of endoscopic procedures as discussed by the authors.
Abstract: An electrosurgical instrument is provided for cauterization and/or welding of tissue of varying impedances, thicknesses and vascularity especially in the performance of endoscopic procedures. The instrument compresses the tissue between one pole of a bipolar energy source located on one interfacing surface, and a second interfacing surface. A second pole is located one of the two interfacing surfaces. In a preferred embodiment, the second pole is located on the same interfacing surface as the first pole and an insulator electrically isolates the two poles. A preferred application of the invention is in a cutting instrument wherein a hemostatic line is formed along a cut line using RF energy.
1,912 citations
Patent•
03 Aug 1995
TL;DR: In this article, a self-contained powered surgical stapling apparatus is provided which includes an elongate body, a fastener applying assembly including an anvil for forming a surgical fastener driven thereagainst, a motor assembly and power source for energizing the motor assembly disposed within the elongated body, and a pusher driven by the motor assembler for driving a surgeon fastener toward the anvil to be formed thereby and fastened to body tissue.
Abstract: A self-contained powered surgical stapling apparatus is provided which includes an elongate body, a fastener applying assembly including an anvil for forming a surgical fastener driven thereagainst, a motor assembly and power source for energizing the motor assembly disposed within the elongate body, and a pusher driven by the motor assembly for driving a surgical fastener toward the anvil to be formed thereby and fastened to body tissue. The apparatus is configured for utilization during conventional invasive surgical procedures as well as endoscopic or laparoscopic surgical procedures by providing a detachable extension shaft.
1,894 citations
Patent•
TL;DR: An articulated surgical instrument for enhancing the performance of minimally invasive surgical procedures is presented in this article.The instrument has a high degree of dexterity, low friction, low inertia and good force reflection, and a cable and pulley drive system operates to reduce friction and enhance force reflection.
Abstract: An articulated surgical instrument for enhancing the performance of minimally invasive surgical procedures. The instrument has a high degree of dexterity, low friction, low inertia and good force reflection. A unique cable and pulley drive system operates to reduce friction and enhance force reflection. A unique wrist mechanism operates to enhance surgical dexterity compared to standard laparoscopic instruments. The system is optimized to reduce the number of actuators required and thus produce a fully functional articulated surgical instrument of minimum size.
1,668 citations