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Patent

Motorized surgical cutting and fastening instrument having handle based power source

TL;DR: In this article, a surgical cutting and fastening instrument consisting of an end effector, a shaft, and a handle connected to the shaft is presented. And the handle comprises an electric, DC motor connected to a drive train in the shaft for powering the drive train.
Abstract: A surgical cutting and fastening instrument. The instrument comprises an end effector, a shaft connected to the end effector, and a handle connected to the shaft. The handle comprises an electric, DC motor connected to a drive train in the shaft for powering the drive train. The handle also comprises a power pack that comprises at least one charge-accumulating device connected to the DC motor for powering the DC motor.
Citations
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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
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 2011
TL;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 2016
TL;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

Patent
30 Jan 2007
TL;DR: In this paper, the first sensor has an output that represents a first condition of either the trigger or the end effector, and the memory device is configured to record the output of that first sensor.
Abstract: A surgical instrument. The surgical instrument has an end effector and a trigger in communication with the end effector. The surgical instrument also has a first sensor and an externally accessible memory device in communication with the first sensor. The first sensor has an output that represents a first condition of either the trigger or the end effector. The memory device is configured to record the output of the first sensor. In various embodiments, memory device may include an output port and/or a removable storage medium.

1,383 citations

References
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Journal ArticleDOI
TL;DR: The composition and synthesis of hydrogels, the character of their absorbed water, and permeation of solutes within their swollen matrices are reviewed to identify the most important properties relevant to their biomedical applications.

5,173 citations

Journal ArticleDOI
Yong Qiu1, Kinam Park1
TL;DR: Development of environmentally sensitive hydrogels with a wide array of desirable properties can be made is a formidable challenge, however, if the achievements of the past can be extrapolated into the future, it is highly likely that responsive hydrogelWith such properties can been made.

4,216 citations

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
15 Oct 1991
TL;DR: In this paper, the authors describe a surgical instrument useful for laparoscopic surgery comprising an insulated shaft, a control means and a connection to an electrosurgical radiofrequency power source, its distal end having a tissue-engaging ledge, and the shaft supporting a tissueengaging clamping or cutting member movable toward the ledge in response to the control means so that an artery or other tissue in the pocket of the J-hook can be clamped or cut while radiofrequency current is applied.
Abstract: A surgical instrument useful for laparoscopic surgery comprising an insulated shaft, a control means and a connection to an electrosurgical radiofrequency power source, its distal end being of general J-hook form having a tissue-engaging ledge, and the shaft supporting a tissue-engaging clamping or cutting member movable toward the ledge in response to the control means so that an artery or other tissue in the pocket of the J-hook can be clamped or cut while radiofrequency current is applied. Instrument constructions disclosed incorporate one or two clamping members and a cutting member arranged such that with actuation, the clamping member(s) engages the ledge before the cutting member, and, by selective actuation of the electrosurgical power source, coagulation current can be applied while clamping an artery or other tissue against the ledge to stop flow of blood, and by further actuation of the control and suitable current to the cutting member, the artery or tissue may be cut. Selector means enable movement of one and prevent movement of one of the members during actuation; bipolar or monopolar energization is employed; the relatively long leg of the J-member has portals. Communicating through a lumen in the shaft for infusion or aspiration of fluid; the distal end surface of the J-hook defines a cutting edge for blunt dissection; and the control means comprises a single actuatable member by actuator rods for sealing clamp and cutting members, while a compression spring associated with the actuating rod of the sealing clamp member compresses when the clamp member is stopped, in clamping action upon the artery or tissue while cutting of tissue thereafter proceeds. A diamond film on tissue-engaging surfaces of a clamp, grasping or cutting surgical instrument improves heat transfer between tissue and instrument.

2,088 citations

Journal ArticleDOI
TL;DR: It is timely to summarize the polymeric systems that undergo sol-gel transitions, particularly due to temperature, with emphasis on the underlying transition mechanisms and potential delivery aspects.

2,048 citations