661 results about "Foreign Bodies" patented technology

Devices and methods for improved soft tissue securement are disclosed, and, in particular, to tissue anchoring elements and deployment thereof. Such tissue anchoring elements may comprise a linkage element and an array of spreading elements. Endoscopic devices and methods are disclosed for deploying multiple anchoring elements to multiple sites and manipulating at least some of the associated linkage elements to approximate selected sites. Applications of such endoscopic devices and methods may include endoluminal therapy such as gastroplasty, which may be used for the treatment of obesity and gastroesophageal disease. Such devices and methods may also include the attachment of a foreign body to a tissue mass. Further aspects of the invention include devices and methods for the modification of mechanical properties of the anchoring sites so as to decrease the likelihood that anchoring elements will pull out. Such modification may include irritating or injuring the tissue within the anchoring sites, thereby causing a healing or scarification response, or may alternatively include deploying a solidifying agent within the anchoring sites.

A penetrating endoscope provides visualization of organ or tissue structures or foreign objects in a body. The penetrating endoscope includes an elongate penetrating member, a complementary metal dioxide semiconductor (CMOS) image sensor and an objective lens. The CMOS image sensor is substantially planar and includes a plurality of pixels with a pixel signal processing circuit for generating a color image ready signal. The CMOS image sensor converts image light energy into electrical color image ready signal energy for transmission out of the body. The color image ready signal is viewed on a color image display. The CMOS image sensor is carried on the elongate penetrating member adjacent a distal end of the elongate penetrating member. The objective lens is also carried on the distal end of the elongate penetrating member on an optical axis and focuses an image corresponding to an endoscope field of view at an image plane intersecting the optical axis. The CMOS image sensor is mounted with the CMOS image sensor pixels disposed substantially in the image plane and on the optical axis. The penetrating endoscope may include end effectors such as cutters and forceps.

An implantable biosensor assembly and system includes an enzymatic sensor probe from which subcutaneous and interstitial glucose levels may be inferred. The assembly may be associated by direct percutaneous connection with electronics, such as for signal amplification, sensor polarization, and data download, manipulation, display, and storage. The biosensor comprises a miniature probe characterized by lateral flexibility and tensile strength and has a large electrode surface area for increased sensitivity. Irritation of tissues surrounding the probe is minimized due to ease of flexibility and small cross section of the sensor. Foreign body reaction is diminished due to a microscopically rough porous probe surface.

A surgical device for removing a foreign object from a body is described. The device includes a retrieval basket for entrapping and retaining the object located in the body, a basket control assembly comprising a tubular sheath adapted to penetrate into the body for reaching the object, and a manipulator for manipulating the basket for extraction the object from the body. The basket comprises a structure having a proximal end and a distal end. The structure is formed by a plurality of filaments fabricated from a single or several wires. The filaments extend from the proximal end towards the distal end. At least a part of the filaments are configured in the form of loops. At least a part of the loops are interlaced so as to define a net at the distal end, and thereby impart structural rigidity and dilatation ability to the basket when opened.

Devices, systems and methods for removing foreign bodies within a body lumen are disclosed. An unfolding balloon catheter may include an elongated shaft having an intussuscepting balloon that can be actuated within a body lumen to capture and retrieve an intravascular device. The balloon may be configured to radially and/or axially expand when inflated, enveloping the intravascular device. In certain embodiments, the balloon may be formed by folding the ends of a distensible member inwardly, and then bonding the ends of the distensible member to the elongated shaft to form an expandable sleeve. An adhesive layer located along a portion of the elongated shaft may be used to temporarily secure the balloon to the elongated shaft.

Biocompatible materials are propelled at the skin with sufficient velocity to cause desired resurfacing of skin layers to the desired penetration depth. The materials, such as dry ice or water ice, are harmonious with the human body and thus eliminate foreign body reactions. Various materials may be used in combination, including local anesthetics and vasoconstrictors in solid or liquid form. The biocompatible solid or liquid particles are suspended in a cold carrier fluid and propelled through an insulated delivery system to the surface of the skin. The treatment of diseased skin lesions may be accomplished using the present invention as a drug delivery system.

The invention consists of a sensor with multiple indicating (sensing) electrodes covered with a selectively permeable membrane for monitoring fluid concentrations in a biological environment. The indicating electrodes respond to changes in certain analytes, such as glucose, through an enzyme-mediated reaction. The currents generated from the enzyme-mediated reactions are transmitted through radio signals to an external receiver where the information is processed and recorded. Through the use of various biomaterials and biochemicals associated with the sensor, the monitoring accuracy is improved and the overall viability is prolonged. The process of foreign body fibrosis (formation of a scar capsule around the implanted sensor) eventually limits the functional life of the device. We teach methods of delivery of certain biochemicals that can increase the functional life of the sensor by inhibiting the formation of the foreign body capsule or by stimulating the growth of capillaries into the capsule.

The present invention discloses an intravascular foreign object retrieval catheter having an elongated, flexible first outer containment catheter having a second basket catheter contained therein and having a third microcatheter contained therein and having a fourth snare wire contained therein having a loop on the end thereof. The containment catheter, the basket catheter and the microcatheter work together as coaxial tubes. The basket catheter is slidable within the containment catheter, the microcatheter is slidable within the basket catheter, and the wire is slidable within the microcatheter. The basket catheter has a containment basket on its distal end which is used to surround a foreign object whereupon the innermost wire having a loop on its end is then placed around the foreign object. Thereafter, the microcatheter is advanced along the innermost wire in order to tighten the loop around the foreign object. The microcatheter and the loop with the object contained therein are retrieved into the containment basket. The containment basket is retrieved into the containment catheter where the object may or may not be partially crushed and then the containment catheter is removed from the patient having the foreign object contained therein.

PCT No. PCT/JP97/04203 Sec. 371 Date May 20, 1999 Sec. 102(e) Date May 20, 1999 PCT Filed Nov. 19, 1997 PCT Pub. No. WO98/22155 PCT Pub. Date May 28, 1998The present invention offers an artificial tube for nerve which can remain in the body until the nerve regenerates while does not remain as a foreign body in the body following nerve regeneration, and which induces axons regenerated from severed nerve stumps, can promote infiltration of blood capillaries from the body and regeneration of nerve tissue. The present invention comprises a tube 10 or 20 having coating layers 12, 13 or 22, 23 composed of gelatin or collagen on the inner and outer surfaces of a tube 11 or 21 composed of a material being biodegradable and absorbable in vivo, and a collagen body 30 or 40 having cavities 32, 33 or 41 which pass through said tube so as to be substantially parallel to the axis of said tube; wherein, said cavities are filled with a matrix gel.

This invention provides, e.g., a catheter with a threaded loop type snare tool for retrieval of objects from blood vessels and/or body cavities. The snare tool of the invention provides, e.g., independently maneuverable probe wires and snare wires to encircle and releasably snare foreign objects inside human and veterinary patients. The invention further provides methods of using the catheter of the invention to retrieve objects from patients.

A device capable of capturing and facilitating the removal of a thrombus in blood vessels (or stones in biliary or urinary ducts, or foreign bodies) uses a soft coil mesh with the aid of a pull wire or string to engage the surface of a thrombus, and remove the captured thrombus. The soft coil mesh is formed by an elongated microcoil element that forms the helical elements of a macrocoil element. The microcoil element provides a relatively elastic effect to the helical elements forming the macrocoil and allows for control of gripping forces on the thrombus while reducing non-rigid contact of the device with arterial walls. The use of multiple coil mesh elements, delivered through a single lumen or multiple lumens, preferably with separate control of at least one end of each coil, provides a firm grasp on a distal side of a thrombus, assisting in non-disruptive or minimally disrupted removal of the thrombus upon withdrawal of the device.

Apparatus for removal of a bolus of foreign matter such as impacted food from an esophagus; including an overtube with an overtube insertion end and an overtube outside end for insertion into an esophagus. A substantially cylindrical basket has a first basket end adjoined to the overtube insertion end. A wire sleeve is inserted within the overtube, having a wire sleeve insertion end disposed near the overtube insertion end and a wire sleeve outside end disposed outside the overtube outside end. A wire is slidingly inserted within the wire sleeve and terminates in a snare loop disposed outside the wire sleeve and integrated with the second basket end. A wire position control is integrated with the wire sleeve outside end and adapted to extend and retract the wire with respect to the wire sleeve as desired.

The invention discloses an LCD general defect detecting method. The LCD general defect detecting method comprises the following steps of (1) carrying out preprocessing on images, (2) separating defects of images of a black and white mode, (3) determining point defects and line defects, (4) zooming grey mode images, (5) reestablishing images, (6) detecting point-shaped foreign body defects, (7) detecting area-shaped foreign body defects, and (8) detecting line-shaped foreign body detects. The LCD general defect detecting method carries out Gaussian smoothing on the images to remove noise, gradient values are then solved, edge points are determined preliminarily according to the gradient values, the edge position is finally located precisely in detail, and effects are made to be clearer.

A combined X-ray and laser 3D imaging system for food safety inspection, which uses a 3D laser subsystem to get accurate depth information, which is further combined with an x-ray image to achieve accurate physical contamination detection in poultry and other meat products. A unique calibration model is used to calibrate the x-ray and laser 3D imaging systems at the same time. And a nested multi-thread software structure is implemented to prevent data conflict and ensure fully use of system resources during the physical contamination detection of the poultry and other meat products.

In a magnetic resonance data acquisition method and system for acquiring data from a patient who carries, either intracorporeally or extracorporeally, a foreign object at least partially composed of electrically conductive material, RF heating to the patient due to the presence of the foreign object is minimized by radiating the patient with RF energy by an RF coil that has a coil design. The sequence of pulses to which the patient is subjected to acquire magnetic resonance data from the patient is configured, in combination with the coil design of the RF coil to steer or modify the electric field that arises in the patient so that RF heating in the patient due to the presence of the foreign object is minimized.

The invention discloses a method for automatically detecting the failure of an insulator. The method comprises the following steps: establishing positive and negative sample banks of insulator images, training an insulator classifier by a convolutional neural network algorithm, and splitting a collected image by utilizing the image salient area detection algorithm to split an equipment area and a background area in the image so as to obtain an insulator searching candidate area; training the insulator classifier by utilizing the convolutional neural network algorithm to locate the insulator, and controlling image collection equipment according to the location information of the insulator string in a current image to complete the image collection of the insulator string; and carrying out insulator surface stain detection, insulator string cracking detection and insulator string breakage or mixed foreign substance detection by utilizing an image identification technology so as to determine abnormal insulators. According to the method, insulator stains, cracking and breakage can be detected by adopting different image processing algorithms, insulator states can be comprehensively detected, and potential safety hazards of the insulators in transformer substations/converter stations can be reduced.