摘要:
A device for treating cardiac disease of a heart having an upper portion and a lower portion divided by an A-V groove, the device including a jacket adapted to be secured to the heart, and a non-adherent material in association with the jacket. The jacket is fabricated from a flexible material defining a volume between an upper and a lower end, the jacket being adapted to be adjusted on the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume for the jacket to constrain expansion of the heart beyond the maximum adjusted volume during diastole and permit substantially unimpeded contraction of the heart during systole. As a result of the flexible material, the jacket allows unimpeded diastolic filling of the heart. Also described is a method for treating cardiac disease including surgically accessing the heart, applying the treatment device of the invention, securing the treatment device to the heart, and surgically closing access to the heart while leaving the treatment device on the heart.
摘要:
A cardiac constraint device comprising a jacket of biological compatible material and an adjustment member. The jacket is adapted to be secured to the heart to snugly conform to an external geometry of the heart and assume a maximum adjusted volume to constrain circumferential expansion of the heart beyond the maximum adjusted volume during diastole and to permit unimpeded contraction of the heart during systole. The adjustment mechanism is configured to alter the internal volume defined by the jacket after the jacket is secured to the heart. The invention also provides a method for treating cardiac disease.
摘要:
A system for managing access to resources in a plurality of servers by a plurality of client computers by using an operating system independent Secure Shell (SSH) protocol running in each server and using a central policy database that centrally stores access rules which specify access to the servers for a plurality of users/accounts. Each time a target server receives a user request to establish an SSH session, it retrieves associated access rules from the central policy database to obtain the latest access rules. Based on the retrieved rules and the identity of the user and the identity of the client computer, the target server determines whether the user has permission to establish the SSH session with the target server. Using a centralized database and requiring the servers to always retrieve the latest access rules from a central database provides consistent application of the access rules across all servers and all client computers.
摘要:
A process for increasing the strength of pure copper and other fcc matrix alloys. The method is particularly applicable to face-centered-cubic materials that undergo dynamic recovery when strain-hardened at room temperature. A cryogenic strain hardening process is used to create a high strength pure copper or copper+Al2O3 alloy. The strength of the material is substantially increased. However, the loss of conductivity is minimal. In the preferred embodiment, pure copper or a copper alloy is drawn into a wire at a temperature of about 77 K. Dynamic recovery of the material is substantially reduced. With this method, drawn copper wire exhibits a strength level about 45% higher than that achievable by an equivalent room temperature deformation.
摘要:
Method and apparatus are disclosed for treating congestive heart failure by administering a fibrosis-inducing agent to an epicardial surface of the heart in an amount selected to induce the formation of fibrosis on the epicardial surface. The fibrosis-inducing agent may be a drug, metal, abrasive or an electrical stimulation on the epicardial surface.
摘要:
An airbag having an array of slits formed therein between its two attachment points, each slit seamed to be impermeable to the inflation medium. The slits are oriented to be perpendicular to a line defined by these two attachment points. The slits may be in offset rows and are each longer than the distance between the rows to allow the airbag to be significantly expanded by pulling in opposite directions on its attachment points. The airbag thus made can, when expanded, be folded to fit into a housing running along the roofline of a vehicle. Upon inflation and forcing itself from the housing, it will contract sharply, increasing its tension between attachment points and serving to both cushion and restrain passengers against lateral impact.
摘要:
An Unloader assembly to control load distribution about a joint is disclosed. The assembly including an upper collar attachable above the joint and a lower collar attached below the joint, and a hinge positioned between the upper attachment and the lower attachment. The Unloader further includes a compression assembly includes an arm attached at one end to the hinge and a housing into which the arm is slidable. The housing further includes a bushing and a variable resistance beam positioned between the arm and the bushing. The variable resistance beam provides a variable degree of rigidity to provide different levels of resistance to compression.
摘要:
A repository manager facilitates robust revision control of components of a large scale system. The repository manager stores system components under revision control in a repository, according to internal names. The repository manager also stores binding information between internal names of system components and associated external names, as well as component attribute information. The repository manager provides users with working areas, from which they are able to access system components according to their external names, via the repository manager. As users perform operations affecting system components, the repository manager keeps track of the performed operations. Responsive to a user committing a set of changes, the repository manager updates the master repository according to the performed operations, associates a new version number with the resulting state of the repository and synchronizes the user's working area with the updated repository.
摘要:
A diversion device capable of generating a disorientating flash and a disorientating sound without an explosion has a housing with a cavity containing an inert gas, a piston and a powder. The powder creates the flash via ignition after exiting the device. The device also includes a mechanism configured to ensure the powder encompasses the device upon exit and does is not dispersed in a substantially horizontal plane. In addition, the device may include devices capable of creating a disorientating sound as the inert gas escapes the device.
摘要:
A diversion device capable of generating a disorientating flash and a disorientating sound without an explosion has a housing with a cavity containing an inert gas, a piston and a powder. The powder creates the flash via ignition after exiting the device. The device also includes a mechanism configured to ensure the powder encompasses the device upon exit and does is not dispersed in a substantially horizontal plane. In addition, the device may include devices capable of creating a disorientating sound as the inert gas escapes the device.