摘要:
A method of treating a lesion in a gastrointestinal tract and an injectate system are provided. The method includes injecting a crosslinkable gel into a first tissue layer, the crosslinkable gel increasing a volume of the first tissue layer. The method also includes providing a crosslinker and resecting a portion of a first tissue layer having the increased volume away from a second tissue layer creating an exposed region in a remaining portion of the first layer and leaving a portion of the gel covering at least a portion of the exposed region. The injectate system includes a crosslinkable gel and a crosslinker where the crosslinkable gel and the crosslinker form a crosslinked gel having a compressive modulus of about 10-500 kPa.
摘要:
An implantable article comprising a dissolvable sponge derived from the mixture of chitosan, a first polysaccharide and a second polysaccharides. The polysaccharides have different number average molecular weight characteristics to enable the control of the mechanical features of the sponge.
摘要:
The present disclosure relates to ureteral stents, in particular a composition for ureteral stents that are used to ensure patency of a channel, namely the ureter which may be compromised, for example, by a urinary stone, neoplasia or a surgical procedure The solution now disclosed relates to a composition for biodegradable stents, in particular to ureteral stents and method for obtain such stents. This disclosure overcomes the problems encountered in the available stents, in particular, ureteral stents, as it namely: avoids the need for a second surgery for stent removal; decreases the morbidity in patients submitted to a surgical procedure; decreases or eliminates the risk of infection after the implantation of the ureteral stent.
摘要:
An hydrogel comprising chitosan and two weak bases having different pKb values. In some embodiments, one of the weak bases if sodium hydrogen carbonate (SHC). Also, use of the hydrogel in medical and cosmetic treatments.
摘要:
The method, characterized in that, the powdered chitosan is dissolved in water to obtain a 5% solution, into which a 70-90% acetic acid is added and after the formation of the blank intramedullary nail and carrying a coagulating bath and neutralization bath it is subjected to a crosslinking bath in a solution formed from 0.5 to 2% of sodium tri-polyphosphate and 0.5% to 3% Na 3 PO 4 for 24 to 48 hours in temperature of 50°C to 140°C and then it is subjected to the drying process, for a period of 6 to 10 days, and finally the surface of the blank is treated to form the intramedullary nail. The surface treatment is carried out until the surface of the intramedullary nail contains at least 20% - 40% of the pore of the depth of 0.1mm to 1mm.
摘要翻译:该方法的特征在于,将粉状壳聚糖溶于水中,得到5%溶液,加入70-90%乙酸,形成空白髓内钉后,进行凝固浴和中和浴 在50〜140℃的温度下,在由0.5〜2%的三聚磷酸钠和0.5〜3%的Na 3 PO 4形成的溶液中进行交联浴24〜48小时,然后进行干燥 过程为期6〜10天,最后将毛坯的表面处理形成髓内钉。 进行表面处理直到髓内钉的表面含有0.1mm至1mm深度的孔的至少20%-40%。
摘要:
Disclosed is a resilient foam and methods of making the foam. The resilient foam includes a derivatized polyanionic polysaccharide and has an open-cell structure. When the resilient foam is contacted with water, the foam forms a thixotropic hydrogel.
摘要:
A microsphere and method for forming the same are disclosed. The microsphere includes modified cellulose and at least one of a visualization agent, a magnetic material, or a radioactive material.
摘要:
Porous self-assembling biomaterials comprising silk-fibroin and hyaluronic acid and methods for preparing such biomaterials are disclosed. Devices employing the porous self-assembling biomaterials are also provided.