92results about How to "Reduce heat spread" patented technology

An electrode sealing assembly is designed for use with an electrosurgical instrument for sealing tissue and includes first and second jaw members each having an insulative housing and being movable from a first position in spaced relation relative to one another to at least one second position for grasping tissue therebetween. Each of the jaw members includes an electrically conductive sealing member disposed within the respective insulative housing. At least one of the insulative housings includes at least one tissue engaging surface configured to extend beyond the electrically conductive sealing member of one of the jaw members. The tissue engaging surface of the insulative housing cooperates with the opposing insulative housing of the opposing jaw member to both pinch and spread tissue when the jaw members are moved to the second position to decrease extraneous energy transmittance to tissue surrounding the jaw members.

An ultrasonic surgical instrument is provided. The ultrasonic surgical instrument includes a housing having an elongated shaft extending therefrom. The shaft defines a longitudinal axis therethrough and has at least one jaw member disposed at a distal end thereof. The jaw member(s) is movable between open and clamping configurations. A probe extends through the shaft and operably couples to the housing. The probe includes a cutting blade at a distal end thereof adjacent the jaw member(s) to treat tissue of interest. The jaw member(s) and cutting blade are configured such that heat damage to tissue adjacent tissue of interest that has been treated by the cutting blade is reduced and / or eliminated.

An electrosurgical vessel sealing instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes a jaw housing, a seal plate having a tissue contacting surface and a side wall, and an insulating region disposed on the side wall of the seal plate. The instrument includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The insulating region enables precision overmolding of the jaw housing to the seal plate, while advantageously reducing thermal spread and edge cutting during vessel sealing procedures.

Disclosed herein is an illumination system for use in display systems employing spatial light modulators. The illumination system comprises a fastening mechanism for securing the bonding of the walls of the light integrator of the illumination system. A heat dissipation mechanism can be alternatively provided for reducing the temperature of the illumination system by dissipating the heat thereof.

An electrosurgical system for sealing vessels using capacitive (RF) dielectric heating and a method thereof are provided. The system includes an electrosurgical instrument having an end effector with parallel plate electrodes that will clamp onto a vessel and maintain a specified gap distance; however, the electrodes will be coated with a non-conductive dielectric material. Such an end effector will ensure that direct conduction between the electrodes does not occur through tissue or fluids and effectively creates a parallel plate capacitor with a dielectric, e.g., tissue and coating, in between the plates. The electrosurgical instrument will be activated with an AC signal at a specified RF frequency, e.g., a Debye resonance frequency, via an electrosurgical generator. An effective AC current will flow through the tissue and cause heating due to fictional losses from rotating polar molecules in the tissue.

An electrosurgical vessel sealing instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes a jaw housing, an inner tissue engaging surface, and an insulating layer disposed therebetween. The instrument includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The jaws include a tissue-contacting seal plate having obverse and reverse surfaces. A series of ribs extend from the reverse surface of the seal plate into an insulating layer, which, in turn, is affixed to a jaw housing. The ribbed structure of the seal plate reduces thermal spread and edge cutting during vessel sealing procedures, leading to improved surgical outcomes.

An electrosurgical vessel sealing instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes a jaw housing, an inner tissue engaging surface, and an insulating layer disposed therebetween. The instrument includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The jaws include a tissue-contacting seal plate having obverse and reverse surfaces. A series of ribs extend from the reverse surface of the seal plate into an insulating layer, which, in turn, is affixed to a jaw housing. The ribbed structure of the seal plate reduces thermal spread and edge cutting during vessel sealing procedures, leading to improved surgical outcomes.

System and method for LED packaging. The present invention is directed to optical devices. More specifically, embodiments of the presentation provide LED packaging having one or more reflector surfaces. In certain embodiments, the present invention provides LED packages that include thermal pad structures for dissipating heat generated by LED devices. In particular, thermal pad structures with large surface areas are used to allow heat to transfer. In certain embodiments, thick thermally conductive material is used to improve overall thermal conductivity of an LED package, thereby allowing heat generated by LED devices to dissipate quickly. Depending on the application, thermal pad structure, thick thermal conductive layer, and reflective surface may be individually adapted in LED packages or used in combinations. There are other embodiments as well.

The invention discloses a construction method of a large-volume concrete bearing platform with one-time pouring in winter, comprising the following steps of: step 1, binding steel reinforcement cages; step 2, laying cooling water pipelines and temperature measuring elements; step 3, constructing formed templates, wherein the construction process comprises delimiting template lines and constructing formed brick dies; step 4, pouring concrete; and step 5, conserving and finishing surface: finishing surface in time when completing the pouring of the concrete, carrying out the surface finishing twice, carrying out the first surface finishing when pouring the concrete to the top, carrying out the second surface finishing when the concrete is initially congealed, and adopting a mode that external stores water for conserving when the concrete is initially congealed. The invention has the advantages of reasonable design, simple construction method step, convenient operation, short construction period, one-time pouring molding and strong maneuverability, the large-volume concrete bearing platform constructed for molding in winter has good quality, the poured concrete is not frozen, and the surface of the bearing platform can not have temperature cracks.

A vibration and heat insulating board fixed so as to cover at least part of a heat source while forming a gap against the heat source surface, in order to lessen diffusion of heat from the heat source fixed in a vibration source, in which the heat source and the vibration and heat insulating board are coupled by means of a collar member having a pair of locking pieces fitted to the vibration and heat insulating board main body and bolted to a mounting part of the heat source, and ring-shaped coil members interposed between the pair of locking pieces of the collar member and the vibration and heat insulating board main body.

Bipolar electrosurgical instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes an outer housing, and an inner tissue engaging surface corresponding to the inner tissue engaging surface of the opposing jaw. The instruments includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The jaws include asymmetrical electrodes disposed on the inner tissue engaging surfaces. A first contact region of the electrode has a greater surface area than that of the second contact region. During resection procedures wider electrodes impart improved sealing energy to the patient-side vessel while providing sufficient energy to resected tissue to effect hemostasis.

System and method for LED packaging. The present invention is directed to optical devices. More specifically, embodiments of the presentation provide LED packaging having one or more reflector surfaces. In certain embodiments, the present invention provides LED packages that include thermal pad structures for dissipating heat generated by LED devices. In particular, thermal pad structures with large surface areas are used to allow heat to transfer. In certain embodiments, thick thermally conductive material is used to improve overall thermal conductivity of an LED package, thereby allowing heat generated by LED devices to dissipate quickly. Depending on the application, thermal pad structure, thick thermal conductive layer, and reflective surface may be individually adapted in LED packages or used in combinations. There are other embodiments as well.

In a method of manufacturing a semiconductor device, an active channel pattern is formed on a substrate. The active channel pattern includes preliminary gate patterns and single crystalline silicon patterns that are alternately stacked with each other. A source / drain layer is formed on a sidewall of the active channel pattern. Mask pattern structures including a gate trench are formed on the active channel pattern and the source / drain layer. The patterns are selectively etched to form tunnels. The gate trench is then filled with a gate electrode. The gate electrode surrounds the active channel pattern. The gate electrode is protruded from the active channel pattern. The mask pattern structures are then removed. Impurities are implanted into the source / drain regions to form source / drain regions. A silicidation process is carried out on the source / drain regions to form a metal silicide layer, thereby completing a semiconductor device having a MOS transistor.

In a method of manufacturing a semiconductor device, an active channel pattern is formed on a substrate. The active channel pattern includes preliminary gate patterns and single crystalline silicon patterns that are alternately stacked with each other. A source / drain layer is formed on a sidewall of the active channel pattern. Mask pattern structures including a gate trench are formed on the active channel pattern and the source / drain layer. The patterns are selectively etched to form tunnels. The gate trench is then filled with a gate electrode. The gate electrode surrounds the active channel pattern. The gate electrode is protruded from the active channel pattern. The mask pattern structures are then removed. Impurities are implanted into the source / drain regions to form source / drain regions. A silicidation process is carried out on the source / drain regions to form a metal silicide layer, thereby completing a semiconductor device having a MOS transistor.

This invention puts forward a design plan for wetting technology and system used in test platforms of large power fuel cells, which puts forward a heat-exchange system of two stages or multiple stages to transfer heat generated by fuel cells to reactant gas entering into the fuel cell, in order to increase the gas / liquid medium-transfer ability of the wet system, a high efficient filled converse flow spray tower is taken as a main wetting device and temperature of a spray medium is controlled accurately to guarantee temperature of wetting and saturation of vapor, which can control the relative humidity of the reactant gas entering into a fuel cell stack within +-2% and relative temperature in +-0.1deg.C by controlling the temperature of an overheater with an outer heater and efficient heat-transmitting filling component accurately, and a foam-removing system with accurate temperature control is matched to avoid liquid from entering into the back system.

The invention discloses a laser optical path guiding system of laser sinter molding equipment. The laser optical path guiding system of the laser sinter molding equipment comprises a laser source, a beam expander matched with the laser source, a scanning galvanometer device matched with the beam expander and a flat field focusing lens connected with the scanning galvanometer device. The laser sinter molding equipment is provided with a molding platform, a focal plane of the flat field focusing lens is overlapped with the molding platform, and the focus point of the lens is arranged at the center of the molding platform. Due to the mentioned structure, not only can printing of a three-dimensional component be achieved very well, but also each optical component can be connected into a whole without clearances, drifting of light beams is avoided, at the same time dust and vibration are prevented. In addition, protection of optical elements like the galvanometers and the like is considered. The laser optical path guiding system is compact in structure, short in optical path, small in light energy consumption, and convenient to debug.

An ultrasonic surgical instrument is provided. The ultrasonic surgical instrument includes a housing having an elongated shaft extending therefrom. The shaft defines a longitudinal axis therethrough and has at least one jaw member disposed at a distal end thereof. The jaw member(s) is movable between open and clamping configurations. A probe extends through the shaft and operably couples to the housing, The probe includes a cutting blade at a distal end thereof adjacent the jaw member(s) to treat tissue of interest. The jaw member(s) and cutting blade are configured such that heat damage to tissue adjacent tissue of interest that has been treated by the cutting blade is reduced and / or eliminated.

The invention discloses a low-resistance enhanced heat transfer structure based on a nanometer super-wetting interface. The low-resistance enhanced heat transfer structure comprises a lower embedded microchannel layer and an upper manifold channel layer, wherein embedded microchannels are perpendicular to manifold channels; the lower embedded microchannel layer consists of a plurality of embeddedmicrochannel units; the cross section of each embedded microchannel of each unit is a rectangular divergent cross section along the flowing direction of a cooling working medium; the shape of each embedded microchannel of each unit is isosceles trapezoid; the upper manifold channel layer is composed of the S-shaped manifold channels; and two adjacent S-shaped manifold channels form inlets and outlets of the manifold channels. According to the low-resistance enhanced heat transfer structure, a microchannel radiator is constructed by utilizing a layered flow structure, the heat transfer characteristic and the resistance characteristic can be simultaneously improved by combining the microchannel radiator with the nano super-wetting interface and the divergent microchannel section, and the low-resistance enhanced heat exchange of the microchannel radiator is achieved under the condition of higher heat dissipation efficiency.

The invention provides a phase-changing memory unit with a similar super lattice structure, which comprises a phase-changing material layer. In the phase-changing material layer, the similar super lattice structure is formed by periodic and alternate growth of a single GaSb layer and a single phase-changing material Sb2Te3 layer in a nano-thick single layer. The single GaSb layer is 2-8nm thick, and the single phase-changing material Sb2Te3 is 3-12nm thick. The similar super lattice material has the advantages of adjustable crystallization temperature, low thermal conductivity, good thermal stability and high phase-changing speed. When the similar super lattice material is applied in a phase-changing memory, the phase-changing memory has the advantages of high data retention capability, high erasing and writing speed and low power consumption. A particularly preferred similar super lattice GaSb (4 nm) / Sb2Te3 (6nm) has more advantages than other components in the performance of materials and devices.

Thermal spreading resistance, associated with small geometry electronic features that generate heat on a semiconductor, may be reduced through the addition of a thermally conductive fluid. For example, a dielectric fluid may be used within a volume between a semiconductor package and the semiconductor substrate. Therefore, direct thermal cooling may be employed to reduce the thermal spreading resistance often encountered in MMIC power amplifier devices. Furthermore, exemplary methods to achieve this sealing are described herein.

Disclosed is a method of fabricating a pattern, and more particularly is a method of fabricating a pattern by using laser. The method includes: a first step of forming an organometallic ink layer 20 on a substrate; a second step of curing the organometallic ink layer 20 into a semi-solid state; a third step of forming a pattern by irradiating laser onto the semi-solid organometallic ink layer 20, so that the irradiated portion of the organometallic ink layer 20 is changed into a solid state; and a fourth step of leaving only the pattern by removing the semi-solid organometallic ink layer 20.