Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 1 (1967), S. 179-196 
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Warp-knitted velour fabrics of Dacron, nylon, polypropylene, and Rayon have been backed with Silastic to form a laminate. Prior to heat curing, the composite can be molded into many shapes and has been successfully used to line the luminal side of blood pumps and vascular grafts. Prosthetic heart valves are being covered with velour in an attempt to promote a more compatible surface. Velour suture rings are being evaluated as a more efficient anchor for prosthetic heart valves. Silastic tubes with velour bonded to the outer wall have been used to inhibit infection and sinus tract formation where percutaneous lead wires and conduits are necessary. As a flat sheet, the Silastic-velour laminate has been used experimentally as an artificial skin, but the most noteworthy experimental results have been obtained in rats using a double layer of nylon velour, separated by an impermeable layer of poly(vinyl fluoride). Future application will include attempts to anchor artificial limbs via a velour interface and made functional by tendinous attachment.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Previous observations of pseudointimal organization within impermeable cardiovascular prostheses indicated that rapid spontaneous healing was dependent upon proximity of host vascular tissue at the suture line. Autologous connective tissue fragments were prepared from skeletal muscle biopsies by blender-mincing muscle tissue. The fragments were embedded in the fabric used to line the inner wall of arterial prostheses. A tightly fitting piston was drawn through the prosthesis, forcing the suspended tissue fragments to flow around the piston and become entwined in the loops of the velour fabric. The arterial prostheses prepared in this way were inserted as replacements for segments of canine abdominal aorta. This in vivo culture system supported cellular proliferation and pseudointimas healed uniformly. Pseudointimas of paracorporeal pumps in operation for as long as 5 weeks did not show signs of healing. The same principle of filtration of tissue fragments into a lining fabric was applied to diaphragms of left ventricular bypass pumps. This type of paracorporeal pump supported in vivo culture of implanted fragments.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 18 (1984), S. 383-393 
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Bringing a percutaneous implant through the integument with the intentions of leaving it as a functional device for prolonged periods of time has not yet become a reality. If we are ever to achieve prolonged uninfected implants, attention must be directed toward a variety of failure mechanisms. Some of these mechanisms have defined our scrutiny, and our awareness of others are poorly understood. Some of the causes for failure of a percutaneous implant are the forces, either extrinsic or intrinsic, that cause shearing and tearing at the skin-implant interface. Extrinsic forces are defined as those forces applied either to the skin or the implant by the external environment. Intrinsic forces are those that have to do directly or indirectly with the body's growth and cell maturation, such as the retraction of maturing scar tissue and the surface migration of squamous epithelium. An intact skin-implant interface is important to attain in order to close the portal which might allow microbial invasion. The integument must remain intact, since a suppurative wound makes the implant's removal mandatory.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 5 (1971), S. 17-20 
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Interfacing biologic material with foreign substances is a problem common to all implantable devices. This paper discusses these problems with respect to degradation of the material used in fabrication and the body's reaction to the foreign substance. The requirements dictate the type of tissue reaction sought and this in turn determines the base material. A nonreactive material may be ideal for one set of needs but tissue reactivity would be required for another. The specialized tissue “blood” is given special emphasis.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...