286 results about "Fibrous tissue" patented technology

A device is described that can be used by surgeons to provide quick and accurate face-lifting maneuvers that minimize the amount of tissue that has to be removed. The device is comprised of a shaft with a relatively planar but possibly lenticulate and even slightly curved tip that can divide and energize various tissue planes causing contraction especially via the fibrous tissues. Various forms of energy can be delivered down the shaft to heat and cause desirable tissue contraction. The device can also include a temperature sensor that can be used to control power output.

A device is described that can be used quickly and accurately by surgeons to provide uniform facial tissue planes that are tunnel-free and wall-free thus optimizing face lifting, tightening, and implant delivery. The device is comprised of a shaft with a substantially planar tip further comprised of relative protrusions and energized relative recession lysing segments. Forward motion of the device precisely divides and energizes various tissue planes causing contraction, especially via the fibrous tissues. Other forms of energy and matter can be delivered down the shaft to further enhance desirable tissue modification and contraction.

A device is described that can be used by surgeons to provide accurate tissue-lifting and tightening maneuvers that uses minimal external incisions, enhances accuracy, reduces inadvertent consequences while speeding the procedure. The device is comprised of a shaft with a relatively planar but possibly lenticulate or even slightly curved tip that can divide and energize various tissue planes causing net contraction via the fibrous tissue modification. Various forms of energy can also be delivered to cause desirable tissue alterations.

Methods and devices are provided for enhancing mass transport through any fibrous tissue capsule that may form around an implanted medical device following implantation. Methods and devices are also provided to enhance vascularization around the implanted device, which also will aid in mass transport to/from the device. The device preferably comprises multiple reservoirs containing (i) a drug formulation for short- or long-term, controlled drug delivery, (ii) sensors for sensing an analyte in the patient, or (iii) a combination thereof.

A resorbable implant for interposition arthroplasty which is intended to fill a void between two adjacent bone ends, providing a cushion between the bone ends to prevent impingement of the bone ends while providing time for tissue to infiltrate into the space occupied by the implant. It has a protracted resorption time of preferably at least three months to allow time for the proliferation of load-bearing host fibrous tissue in place of the resorbed implant material. The implant preferably is porous with a pore size of greater than about 80 microns in order to enhance infiltration of fibrous tissue. The implant has a modulus in the range of 0.8 to 20 MPa which is soft enough to allow it to conform to surface irregularities of the adjacent bone surfaces while being hard enough to maintain a desired separation between those bones while tissue infiltration replaces the resorbable implant material. The implant may be preformed to the desired shape or alternatively may be formable by the surgeon by methods such as carving with a scalpel. A preferred application for the implant is as a trapezium bone replacement.

The invention relates to a tissue engineering material and a preparation method thereof, in particular to a nano fiber tissue engineering blood vessel and a preparation method thereof. The invention consists of a three-dimensional reticular non-woven film formed by an inner layer of nano fiber and an outer layer of nano fiber; the inner layer of the blood vessel is natural polymer, wherein, calculated by weight, 40 percent to 80 percent is fibroin, 20 percent to 50 percent is gelatine, 0 percent to 20 percent is extracellular matrix protein; while the outer layer of the blood vessel is synthetic polymer. The preparation method is that the natural polymer is dissolved in trifluroroethyl and other solution, while the synthetic polymer is dissolved in hexafluoroisopropanol and other solution, which are respectively prepared into spinning solution; the static electricity spinning technique is adopted to subsequently form the inner and the outer layers on a gather roller; cross-linked treatment is conducted after the inner and the outer layers are taken down, to prepare the nano fiber tissue engineering vessel. The inner layer can simulate the structure of the extracellular matrix, provide good environment for endothelial cells to grow, support adhesion, proliferation and differentiation of the cells, and is good for endothelization of the blood vessel; and the outer layer has good mechanical performance.

New methods of ultrasound imaging are presented that provide images with reduced reverberation noise and images of nonlinear scattering and propagation parameters of the object, and estimation of corrections for wave front aberrations produced by spatial variations in the ultrasound propagation velocity. The methods are based on processing of the received signal from transmitted dual frequency band ultrasound pulse complexes with overlapping high and low frequency pulses. The high frequency pulse is used for the image reconstruction and the low frequency pulse is used to manipulate the nonlinear scattering and/or propagation properties of the high frequency pulse. A 1st method uses the scattered signal from a single dual band pulse complex for filtering in the fast time (depth time) to provide a signal with suppression of reverberation noise and with 1st harmonic sensitivity and increased spatial resolution. In other methods two or more dual band pulse complexes are transmitted where the frequency and/or the phase and/or the amplitude of the low frequency pulse vary for each transmitted pulse complex. Through filtering in the pulse number coordinate and corrections of nonlinear propagation delays and optionally also amplitudes, a linear back scattering signal with suppressed pulse reverberation noise, a nonlinear back scattering signal, and quantitative nonlinear scattering and forward propagation parameters are extracted. The reverberation suppressed signals are further useful for estimation of corrections of wave front aberrations, and especially useful with broad transmit beams for multiple parallel receive beams. Approximate estimates of aberration corrections are given. The nonlinear signal is useful for imaging of differences in tissue properties, such as micro-calcifications, in-growth of fibrous tissue or foam cells, or micro gas bubbles as found with decompression or injected as ultrasound contrast agent.

Apparatus and methods for treating a wall of an aneurysm formed in a vessel includes introducing a tubular member into the body lumen until a distal end of the tubular member is located within the aneurysm. A fluid is delivered via a lumen of the tubular member into the aneurysm to at least partially de-endothelialize the wall of the aneurysm, thereby causing an endothelium of the wall to generate fibrous tissue to strengthen the wall of the aneurysm.

A closure device closes an opening in a body cavity. The closure device includes an elongate delivery member and a closure component which is removably connected to the distal end of the delivery member. The closure component has a collapsible backing movable between a non-collapsed position and a collapsed position. The closure component also includes a plurality of fibrous tissue engaging members disposed on the backing and oriented in a non-engaging orientation when traveling in a distal direction and in an engaging orientation when traveling in a proximal direction. The fibrous tissue engaging members become entangled in the backing when the backing is in the collapsed position.

A tissue marking implant includes a matrix material and a dye marker. The implant, which can be formed entirely of bioresorbable material such as a collagen foam, is sized and shaped to replace excised tissue. The implant supports surrounding tissue upon implantation, while allowing for in-growth of fibrous tissue to replace the implant. According to various alternative embodiments, the implant is elastically compressible, or can be formed from self-expanding foam or sponges, and can be implanted through a cannula or by injection, as well as by open procedures. The implant can carry therapeutic and diagnostic substances. The dye marker leaches from the implant such that a surgeon, upon subsequent surgical intervention, visibly recognizes the tissue marked by the dye marker.

The invention relates to peanut vegetarian meat ham and a production method thereof. The peanut vegetarian meat ham is prepared from peanut thick filament tissue protein serving as a main raw material, and soy protein, wheat gluten, potato starch, vegetable oil, complex konjac gum and seasonings serving as auxiliary materials. By the production method for the peanut vegetarian meat ham, different peanut vegetarian meat ham with unique flavors and in different forms can be made, and the ham has an obvious animal lean fibrous tissue shape and chewiness similar to animal meat, does not have any unpleasant beany flavor of the traditional bean products, has mild and aromatic flavor, high slicing property and elasticity and smooth mouthfeel, can achieve an effect same as meat products, overcomes the defect that common vegetarian products are required to be frozen and have short quality guarantee period, is easy to store, convenient to transport, wide in application and suitable for people of all ages and both sexes, meets the requirement on taste, supplement the nutrient requirement of a human body, is convenient to use and eliminates the trouble that the common vegetarian products are stored in a frozen way and eaten after being heated.

The invention discloses methods for preparing shredded mushroom and mushroom dried meat floss by using stems of waste mushrooms generated during mushroom processing. The method for preparing shredded mushroom comprises the following steps of: sequentially carrying out softening process, acid soaking process, high-pressure saturated steam process and shredding process on the stems of mushrooms to prepare the shredded mushroom. The method for preparing mushroom dried meat floss comprises the following steps of: mixing the shredded mushroom with raw materials with different flavors, frying and twisting to be loose. Pyroligneous and high-pressure steam process in the method provided by the invention can soften and separate fibrous tissues of the stems of mushrooms furthest so that the fibers of the stems of the mushrooms are completely and thoroughly separated, and the diameter of the prepared shredded mushroom stem is between 0.4mm and 0.5mm. The mushroom dried meat floss prepared with the method provided by the invention is mellow and tasty, contains more dietary fibers, and has favorable practical value and popularization prospect.

An endovascular graft, having both an expandable stent portion and a stent cover portion positioned, the graft itself and/or a stent cover-portion coated with a bioactive agent adapted to promote initial thrombus formation, preferably followed by long term fibrous tissue ingrowth. The endovascular graft prevents endoleaking by promoting a short term hemostatic effect in the perigraft region. This short term effect can, in turn, be used to promote or permit long term fibrous tissue ingrowth. Particularly where the stent cover portion is prepared from a porous material selected from PET and ePTFE, the bioactive agent can include a thrombogenic agent such as collagen covalently attached in the form of a thin, conformal coating on at least the outer surface of the stent cover. An optimal coating of this type is formed by the activation of photoreactive groups.