2030results about How to "Reduce complications" patented technology

A system for accessing a patient's cardiac anatomy which includes an endovascular aortic partitioning device that separates the coronary arteries and the heart from the rest of the patient's arterial system. The endovascular device for partitioning a patient's ascending aorta comprises a flexible shaft having a distal end, a proximal end, and a first inner lumen therebetween with an opening at the distal end. The shaft may have a preshaped distal portion with a curvature generally corresponding to the curvature of the patient's aortic arch. An expandable means, e.g. a balloon, is disposed near the distal end of the shaft proximal to the opening in the first inner lumen for occluding the ascending aorta so as to block substantially all blood flow therethrough for a plurality of cardiac cycles, while the patient is supported by cardiopulmonary bypass. The endovascular aortic partitioning device may be coupled to an arterial bypass cannula for delivering oxygenated blood to the patient's arterial system. The heart muscle or myocardium is paralyzed by the retrograde delivery of a cardioplegic fluid to the myocardium through patient's coronary sinus and coronary veins, or by antegrade delivery of cardioplegic fluid through a lumen in the endovascular aortic partitioning device to infuse cardioplegic fluid into the coronary arteries. The pulmonary trunk may be vented by withdrawing liquid from the trunk through an inner lumen of an elongated catheter. The cardiac accessing system is particularly suitable for removing the aortic valve and replacing the removed valve with a prosthetic valve.

The present invention is directed to an expandable spinal fusion intervertebral implant that provides for maintaining and creating lordosis in the human spine that can be filled with biologics while in situ to encourage spinal fusion. A threaded rod that traverses an insertion / injection handle can be rotated to operate a screw within the interbody cage that displaces opposing vertical tapped sliding wedges, causing them to converge towards each other. Such contact causes the operation of a horizontal wedge that acts as a lift to expand the interbody cage to one of various dimensions in a preferred range. At its desired expansion, the spinal fusion implant of the present invention is sized to fit within the disc space between two vertebral bodies and fill all voids left while the vertical and horizontal wedges operate within, due to the biologics being contained within the interbody cage.

Described is a prosthetic valve, comprising: an expandable stent including an inner lumen and having a first and a second end; and a spring attached to the first end of the expandable stent; wherein the expandable stent and the spring can expand radially to a desired diametric configuration in order to anchor the prosthetic valve at an implantation position in a body lumen. Related systems and methods.

Approaches are provided for forming a semiconductor device (e.g., a FET) having a multi-function layer (e.g., niobium carbide (NbC)) that serves as a work function layer and a gate metal layer in gate stacks of solid state applications. By introducing a single layer with multiple functions, total number of layers that needs processing (e.g., recessing) may be decreased. As such, the complexity of device integration and resulting complications may be reduced.

A method for tracking ophthalmic lens care compliance, said method comprising the steps of: including at least one sensor with said ophthalmic product for monitoring at least one ambient condition and for logging and recording at least one reading associated said at least one ambient condition, following a predetermined event; determining whether said at least one reading exceeds at least one predetermined threshold, and issuing an alert when said at least one reading exceeds at least one predetermined threshold.

Disclosed is a system for percutaneously steering a surgical needle. Needle steering is accomplished by taking advantage of a deflection force imparted on the bevel tip of the needle by the tissue medium as the needle is pushed through the tissue. By controlling the translation speed and rotation angle of the bevel, a flexible needle may be steered substantially without deflecting or distorting the tissue. The control inputs (translation speed and rotation angle) are computed based on a “bicycle” non-holonomic kinematic model that is a function of mechanical properties of the tissue medium. The system may be used with image-based feedback, which may provide for feedback-based refinement of the model as the needle propagates through the tissue.

A suture anchor having a conical surface and a bore in which an end of an insertion tool is inserted. The insertion end of the insertion tool is made of material having elastic properties. The bore and base of the suture anchor are angled with respect to the central axis of the suture anchor and preferably are parallel to each other. During insertion, the suture anchor is reoriented to fit into the hole, thereby bending the elastic end of the insertion tool. When the suture anchor is within cancellous bone tissue, the elastic properties of the insertion tool deploys the suture anchor to an orientation in which the suture anchor cannot fit through the bone hole, thereby firmly anchoring the suture anchor in the human bone.

An implantable sensor array incorporates active electronic elements to greatly increase the number of sensors and their density that can be simultaneously recorded and activated. The sensors can be of various configurations and types, for example: optical, chemical, temperature, pressure or other sensors including effectors for applying signals to surrounding tissues. The sensors / effectors are arranged on a flexible and stretchable substrate with incorporated active components that allow the effective size, configuration, number and pattern of sensors / effectors to be dynamically changed, as needed, through a wired or wireless means of communication. Active processing allows many channels to be combined either through analog or digital means such that the number of wires exiting the array can be substantially reduced compared to the number of sensors / effectors on the array.

A catheter and catheter system can use energy tailored for remodeling and / or removal of target material proximate to a body lumen, often of stenotic material or tissue in the luminal wall of a blood vessel of a patient. An elongate flexible catheter body with a radially expandable structure may have a plurality of electrodes or other electrosurgical energy delivery surfaces to radially engage the luminal wall when the structure expands. Feedback using one or parameters of voltage, current, power, temperature, impedance magnitude, impedance phase angle, and frequency may be used to selectively control the delivery of energy.

A multi-band antenna includes a resonance frequency regulator, a ground device, a short-circuiting device and a feed-in line. The resonance frequency regulator provides a first resonance mode and a second resonance mode respectively corresponding to the first band and the second band. The ground device includes a main ground surface, a first ground regulator, and a second ground regulator. The main ground surface includes a first ground point corresponding to the first resonance mode, and a second ground point corresponding to the second resonance mode. The short-circuiting device has one end connected to the resonance frequency regulator, and the other end connected to the second ground point. The short-circuiting device has a feed-in point connected to the feed-in line for transmitting electromagnetic signals and the feed-in line connects with the first ground point.

Structures and methods for their formation include a substrate comprising a first semiconductor material, with a second semiconductor material disposed thereover, the first semiconductor material being lattice mismatched to the second semiconductor material. Defects are reduced by using an aspect ratio trapping approach.

An apparatus and method for mastopexy surgeries correcting a ptosis condition caused by tissue stretching, in the breast as a result of pregnancy, time, aging, and the effects of gravity and athletic activity provide an implant having homogeneously formed connectors extending from inside an implant wall for anchoring to the chest wall or chest muscles of a patient. Embedded reinforcements and anchoring tabs or sutures may be readily oriented along a rib or other defining physiological location in order to provide immediate, permanent, and symmetric installation of implants in a mastopexy reconstruction.

There are provided methods and apparatus for multi-view video coding. A video encoder includes an encoder for encoding a block in a picture by choosing between temporal prediction and cross-view prediction to enable a prediction for the block. The picture is one of a set of pictures corresponding to multi-view video content and having different view points with respect to a same or similar scene. The picture represents one of the different view points. A high-level syntax is used to indicate the use of cross-view prediction for the block.

A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools. The method of the present invention will be particularly suitable for forming coronary artery bypass grafts, where an arterial blood source is created using least invasive surgical techniques, and the arterial source is connected to a target location within a coronary artery while the patient is under cardiopulmonary bypass and cardioplegia.

A robot-guided system to assist orthopaedic surgeons in performing orthopaedic surgical procedures on pre-positioned inserts, including for the fixation of bone fractures, and especially for use in long bone distal intramedullary locking procedures. The system provides a mechanical guide for drilling the holes for distal screws in intramedullary nailing surgery. The drill guide is automatically positioned by the robot relative to the distal locking nail holes, using data derived from only a small number of X-ray fluoroscopic images. The system allows the performance of the locking procedure without trial and error, thus enabling the procedure to be successfully performed by less experienced surgeons, reduces exposure of patient and operating room personnel to radiation, shortens the intra-operative time, and thus reduces post-operative complications.

In a method, a system and a computer readable storage medium encoded with programming instructions, as well as a calculation module for three-dimensional presentation of at least two separate surgical objects within a medical procedure, access to three-dimensional models for the surgical objects takes place based on an acquired two-dimensional x-ray image with the surgical objects. The accessed three-dimensional models are integrated into the acquired two-dimensional x-ray image in order to be shown as a modified x-ray image. The modified x-ray image includes position information, relative positions and orientations of the surgical objects.

Antimicrobial compositions and methods are disclosed. The antimicrobial compositions are particularly useful in providing antimicrobial capability to a wide-range of medical devices. In one aspect the invention relates a UV curable antimicrobial coating comprising a UV curable composition comprising an oligomer, a momoner, and a photoinitiator which are together capable of forming a UV curable polymer composition. The compositions include rheology modifiers as necessary. The compositions also include antimicrobial agents, which may be selected from a wide array of agents. Representative antimicrobial agents include cetyl pyridium chloride, cetrimide, alexidine, chlorexidine diacetate, benzalkonium chloride, and o-phthalaldehyde.

There are provided methods and apparatus for multi-view video coding. A video encoder includes an encoder for encoding a block in a picture by choosing between temporal prediction and cross-view prediction to enable a prediction for the block. The picture is one of a set of pictures corresponding to multi-view video content and having different view points with respect to a same or similar scene. The picture represents one of the different view points. A high-level syntax is used to indicate the use of cross-view prediction for the block.

Methods of implanting, applying, or adhering various drug molecules directly into or onto the surface of medical devices through gas cluster ion beam (GCIB) and / or monomer ion beam surface modification of the medical devices before or after depositing the various drug molecules onto the medical devices.

A system and / or method that facilitates the installation and / or authentication of a device by invoking installation protocols and / or authentication protocols for a non-physical connection. A physical interface component provides a physical connection between at least one wireless device and at least one network entity in which the installation protocols and / or authentication protocols can be exchanged. The physical interface component can utilize a token key to establish multiple non-physical connections with multiple wireless devices. Additionally, the physical interface component can utilize a daisy chain scheme to install and / or authenticate a wireless device.

A method of treating glaucoma in an eye by managing fluid flow past an implanted shunt having an elastomeric plate and a non-valved elastomeric drainage tube. The plate is positioned over a sclera of the eye with an outflow end of the elastomeric drainage tube open to an outer face of the plate. An inflow end of the drainage tube tunnels through the sclera to the anterior chamber of the eye. The plate may have regions of greater propensity for cell adhesion alternating with regions of lesser cell adhesion. For example, regions of texturing around the plate or drainage tube may be provided to control the size of a bleb that forms over the implant. The effective surface area of the plate may be balanced against a number of fenestrations. The drainage tube has a reduced profile and may be shaped with a non-circular external cross-section to reduce its height. A scleral groove may be used to further reduce the height of the drainage tube on the sclera. A flow restrictor for the early post operative period will immediately lower the intraocular pressure (IOP) and simultanously prevent hypotony.

A probe used in deep brain stimulation includes a cannula comprising an elongated housing defining an internal aperture and having a base portion with a notch, the housing having a longitudinal axis, and an electrode configured to be inserted through the aperture of the cannula. The electrode and notch are configured such that the electrode will contact the notch when inserted in the cannula and be directed out of the cannula at a non-zero angle relative to the longitudinal axis of the housing.

Therapeutic agent delivery devices and methods for delivering a therapeutic agent to a target location as well as methods for determining the location of a lesion on a vessel wall are disclosed. Various embodiments disclose an expandable member comprising a drug delivery matrix for selectively delivering a therapeutic agent to a lesion on a vessel wall. The drug delivery matrix may comprise one or more sensors and an electroactive polymer for releasing the therapeutic agent. Other embodiments disclose an expandable member comprising a plurality of radially-expanding flexible walls forming a plurality of channels for selectively delivering therapeutic agent to a target area adjacent one or more of the channels. Detecting a lesion may comprise using a plurality of Hall effect sensors disposed on a distal end of a catheter.

Antimicrobial compositions and methods are disclosed. The antimicrobial compositions are particularly useful in providing antimicrobial capability to a wide-range of medical devices. In one aspect, the invention relates to a mild solvent coating using acrylate-type mild solution coating. These compositions include rheological modifiers as necessary. The compositions also include antimicrobial agents, which may be selected from a wide array of agents. Representative antimicrobial agents include cetyl pyridium chloride, cetrimide, alexidine, chlorexidine diacetate, benzalkonium chloride, and o-phthalaldehyde. Additionally, the compositions comprise one or more suitable mild solvents, such as a low molecular weight alcohol, alkane, ketone, and combinations thereof.

A patellar trial and drill guide for use during knee replacement surgery comprising an articular surface member and a fixation peg drill guide. The articular surface member is the exact geometry as the artificial patellar implant, and the drill guide aligns the holes for the fixation pegs of the artificial patellar implant. The patellar trial is placed on the resected patella in the desired position, a patellar clamp is used to temporary fix the patellar trial to the patella. The patella is then returned to its normal position and a trial reduction of the total knee replacement is completed. If the placement and / or size of the patellar trial is unacceptable, the patella is inverted, the patellar trial removed, and a different sized trial or new location is determined. The new patellar trial is secured to the resected patella, and another trial reduction of the total knee replacement is completed. This procedure can be repeated until the patellar trial is the correct size and in the proper location. If the placement of the patella is acceptable, the patella is inverted, the articular surface member removed, fixation peg holes are drilled using the fixation peg holes of the drill guide, and an artificial patellar implant is implanted on the patient's remaining patella.

This invention provides a surgical method to treat hip diseases, including Legg-Calve-Perthes disease or developmental hip dysplasia. This method includes several surgical techniques: a transverse osteotomy of the posterior portion of supraacetabular portion, an oblique and inclined osteotomy of the anterior portion of the supraacetabulum, detachment of a bone block from iliac crest, anterolateral displacement of the distal fragment, and insertion of the bone block into the distracted space of the osteotomy site.

A permanent thrombus and plaque filtering stent blocks and / or filters potential emboli in patients undergoing intravascular treatment and / or stent implantation. The stent has a plurality of movable magnetic or ultrasonic agitating elements attached thereto, which when remotely activated move, vibrate or rotate to break up the thrombus, plaque or tissue debris.