Patent•
Thermal quenching of tissue
07 Jan 2005-
TL;DR: In this article, a system for achieving erythema and mild edema in an upper layer of skin, without causing blisters, and without the risk of high fluence levels or critical need for cooling, is presented.
Abstract: The present invention provides a system for achieving erythema and/or mild edema in an upper layer of skin, without causing blisters, and without the risk of high fluence levels or critical need for cooling.
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Patent•
27 Oct 2008
TL;DR: In this paper, a handle assembly, a first endoscopic portion, a motor, and a first effector are described, and the first end effector is configured to perform a first stapling function.
Abstract: A surgical instrument including a handle assembly, a first endoscopic portion, a motor, and a first end effector is disclosed. The first endoscopic portion is selectively connectable to a distal portion of the handle assembly and defines a longitudinal axis. The first endoscopic portion includes a housing adjacent its proximal portion and includes an actuation member. The motor is disposed in mechanical cooperation with the housing of the first endoscopic portion and is operatively connected to the actuation member for moving the actuation member substantially along the longitudinal axis. The first end effector is selectively connectable to a distal portion of the first endoscopic portion and is configured to perform a first stapling function.
1,339 citations
Patent•
30 Sep 2008TL;DR: In this article, a powered surgical stapler is described, which includes a housing, an endoscopic portion extending distally from the housing and defining a first longitudinal axis, a drive motor disposed at least partially within a housing and a firing rod disposed in mechanical cooperation with the drive motor.
Abstract: A powered surgical stapler is disclosed. The stapler includes a housing, an endoscopic portion extending distally from the housing and defining a first longitudinal axis, a drive motor disposed at least partially within a housing and a firing rod disposed in mechanical cooperation with the drive motor. The firing rod is rotatable by the motor about the first longitudinal axis extending therethrough. The stapler also includes an end effector disposed adjacent a distal portion of the endoscopic portion. The end effector is in mechanical cooperation with the firing rod so that the firing rod drives a surgical function of the end effector. The stapler further includes a control system having a plurality of sensors coupled to the drive motor, the firing rod, the loading unit and the end effector, the plurality of sensors configured to detect operating parameters thereof. The control system also includes a microcontroller coupled to the plurality of sensors and being configured to determine operating status of the powered surgical stapler as a function of the detected operating parameters.
1,165 citations
Patent•
02 Jun 2006
TL;DR: In this paper, a surgical apparatus has a clamp and a stapling mechanism, which is controlled by a trigger handle or a switch assembly, and an indicator provides feedback about the status of the staplings mechanism and also displays a time of tissue compression by the clamp.
Abstract: A surgical apparatus has a clamp and a stapling mechanism. The clamp has a first jaw and a second jaw to clamp on a body tissue at a desired location for a stapling operation. The stapling mechanism is controlled by a trigger handle or a switch assembly. The surgical apparatus has a controller for providing a delay between clamping and actuating of the firing mechanism of the stapling mechanism. The delay provides for a desired amount of time for tissue compression producing a more uniform staple formation. The surgical apparatus also has an indicator. The indicator provides feedback about the status of the stapling mechanism and also displays a time of tissue compression by the clamp.
1,112 citations
Patent•
18 Feb 2013TL;DR: A surgical system has a jaw assembly including a plurality of fasteners, an anvil and a drive beam for pushing an actuation sled as discussed by the authors, and an elongated body is configured to connect with the jaw assembly.
Abstract: A surgical system has a jaw assembly including a plurality of fasteners, an anvil and a drive beam for pushing an actuation sled. A drive screw imparts motion to the drive beam. An elongated body is configured to connect with the jaw assembly. A drive link connects a flexible drive shaft to the drive screw, the drive link being disposed off-axis. The jaw assembly and elongated body are separable from each other.
952 citations
Patent•
02 Jun 2006
TL;DR: In this paper, a surgical stapler has a handle assembly including a stationary handle and a trigger, which is operatively connected to a power cell, such that the power cell powers the drive assembly to effect translation of the cam member relative to the anvil.
Abstract: A surgical stapler has a handle assembly including a stationary handle and a trigger. The stapler also has a drive assembly with a body having a working end and a cam member supported on the working end. The cam member is positioned to translate relative to the anvil to maintain the anvil in the closed position during firing of the stapler. The trigger is operatively connected to a power cell. The power cell is operably connected to a motor of the drive assembly. The manipulation of the trigger actuates the power cell such that the power cell powers the drive assembly to effect translation of the cam member relative to the anvil. The stapler also has a channel for supporting the staple cartridge and the motor of the drive assembly controls the actuation sled supported within the cartridge. The actuation sled urges the plurality of staples from the cartridge when the anvil is in the closed position and in cooperative alignment with the staple cartridge.
947 citations
References
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Patent•
30 Jun 1989
TL;DR: A method for controlled thermal shrinkage of collagen tissue by irradiation with coherent energy in the wavelength band of 1.80 to 2.55 microns as generated by a laser was described in this article.
Abstract: A method for controlled thermal shrinkage of collagen tissue by irradiation with coherent energy in the wavelength band of 1.80 to 2.55 microns as generated by a laser. A specific application to ophthalmological corneal reshaping is described.
372 citations
Patent•
28 May 1991
TL;DR: In this article, a method for treating cutaneous vascular lesions in a target area of a patient is described, which comprises the steps of passing a laser beam against and through a cooling medium, and then passing the laser beam through a patient's epidermis to the target area.
Abstract: A method is provided of treating cutaneous vascular lesions in a target area of a patient. The method comprises the steps of passing a laser beam against and through a cooling medium, and then passing the laser beam against and through a patient's epidermis to the target area while simultaneously subjecting the patient's epidermis to a cooling medium at the location of the epidermis entered by the laser beam. An apparatus for treating a cutaneous vascular lesion in a target area of a patient comprises a laser beam source for directing a laser beam against and through a predetermined location of an epidermis of the patient to the target area and a flexible bag for containing a cooling medium and for subjecting the patient's epidermis to the cooling medium at the target area simultaneous with the application of the laser beam thereto. The flexible bag is positioned between the laser beam source and the target area of the patient's epidermis.
326 citations
Patent•
15 Apr 1994
TL;DR: In this paper, a method for shrinkage of collagen tissue by application of coherent infrared energy was described, in which the threshold shrinkage temperature is substantially reduced by applying a reagent such as lysozyme to the tissue prior to heating.
Abstract: A method and apparatus for controlled thermal shrinkage of collagen tissue by irradiation with coherent energy in the wavelength band of 1.80 to 2.55 microns as generated by a laser. A specific application to ophthalmological corneal reshaping is described. A method for shrinkage of collagen tissue by application of coherent infrared energy, in which the threshold shrinkage temperature is substantially reduced by application of a reagent such as lysozyme to the tissue prior to heating. The method is especially useful in ophthalmology for shape modification of a cornea, and is enhanced by using a corneal collagen shield as a carrier and delivery agent for the reagent and an admixed anaesthetic.
307 citations
Patent•
01 Nov 1988
TL;DR: In this article, a system and method for precisely controlled heating and cooling of a small region of body tissue to effectuate the removal of tumors and deposits, such as atheromatous plaque, without causing damage to healthy surrounding tissue.
Abstract: A system and method are disclosed for providing precisely controlled heating (and cooling in some cases) of a small region of body tissue to effectuate the removal of tumors and deposits, such as atheromatous plaque, without causing damage to healthy surrounding tissue. e.g. arterial walls. Such precisely controlled heating is produced through thermoelectric and resistive heating, and thermoelectric control of a heated probe tip. The system includes a probe tip with N-doped and P-doped legs (6, 8) of semiconductor material, a catheter (20) to which the probe tip is attached for insertion into a patient's body, and a system control mechanism. The probe may be used for reduction and/or removal of atheromatous obstruction (30) in arteries or veins. It may also be used for destruction of diseased tissue and/or tumors in various parts of the body, such as the brain or the bladder. The probe may be configured for either tip heating or for side heating.
294 citations
Patent•
15 May 1995TL;DR: In this article, a cryogenic spurt is applied to the skin surface for a predetermined short period of time in the order of tens of milliseconds so that the cooling remains localized in epidermis while leaving the temperature of deeper port wine stain vessels substantially unchanged.
Abstract: Dynamically cooling the epidermis of a port wine stain patient undergoing laser therapy permits maximization of the thermal damage to the port wine stain while at the same time minimizing nonspecific injury to the normal overlying epidermis. A cryogenic spurt is applied to the skin surface for a predetermined short period of time in the order of tens of milliseconds so that the cooling remains localized in epidermis while leaving the temperature of deeper port wine stain vessels substantially unchanged. The result is that epidermal denaturation and necrosis which normally occurs in uncooled laser irradiated skin sites does not occur and that clinically significant blanching of the port wine stains at the dynamically cooled sites establishes that selective laser photothermolysis of the port wine stain blood vessels is achieved. In addition, dynamic epidermal cooling reduces patient discomfort normally associated with flashlamp-pumped pulsed dye laser therapy.
262 citations