摘要:
The invention concerns a device and methods for providing implants, cells or tissues, for example for grafts or in vitro research cultures, of tissue engineering or cellular therapy. The invention is particularly adapted to produce, in sufficient amount, specific cell populations with high proliferation and/or differentiation potential, adapted for use in tissue engineering, in repair surgery or therapy, particularly for humans. The invention also concerns a method for preparing such a device and its uses, in particular for treating tissue loss, and kits, tranplants, tissues or biological preparations.
摘要:
An improved method, system and arrangement for treatment of urinary incontinence is disclosed, in which a portion of innervated smooth muscle (2) is transplanted and disposed around the urethra to provide a urethral sphincter (2). Electrical stimulation, by an implanted stimulator (1), maintains continuous tone in the sphincter. A remote controller (7) permits the sphincter (2) to be allowed to relax, and hence permit urine to flow out of the bladder.
摘要:
An improved method, system and arrangement for treatment of urinary incontinence is disclosed, in which a portion of innervated smooth muscle (2) is transplanted and disposed around the urethra to provide a urethral sphincter (2). Electrical stimulation, by an implanted stimulator (1), maintains continuous tone in the sphincter. A remote controller (7) permits the sphincter (2) to be allowed to relax, and hence permit urine to flow out of the bladder.
摘要:
An indirect solid free form scaffold manufacturing technique is provided. More particularly, the present invention provides a set of molds, casting methods, mold removals, and surface modification techniques that are compatible with image-based design methods and with solvent, melt, and slurry casting of polymers and ceramics.
摘要:
New artificial muscles and actuators, that are operated by hydrogen gas as working fluid stored interstitially in metal hydrides as a hydrogen sponge. These artificial muscles and actuators are operated both electrically and thermally. The artificial muscles and actuators have fast response, are compact/light-weight, are noiseless, and produce high-power density. They can be used for biomedical, space, defense, micro-machines, and industrial applications.
摘要:
There is provided a device to promote healing of cut tissue members, such as nerves, tendon or muscles, within a body. The device is of hollow construction and comprises apertures into which the cut ends of the tissue members are placed and fixed, usually by a fibrin-based tissue glue. Located between the apertures is a substance to promote healing of the tissue member such as, for example, nerve growth factor. Optionally the device may be used in conjunction with the external reservoir of the substance and/or with a time-operated pump to deliver the substance to the device. The device is biodegradable and is preferably composed of watersoluble glass.
摘要:
A kinematic restraint device and method for determining the range of motion of a total knee replacement system are disclosed. The kinematic restraint device is used as a surrogate knee that duplicates the elastic behavior of individual ligaments, tendons, muscles related to a human knee. The kinematic restraint device according to the invention includes a total knee replacement system and at least one cable or cable-spring combination representing a ligament, tendon, or muscle component of the human knee. The kinematic restraint device overcomes hurdles posed by the use of natural knees in pre-operatively determining the range of motion of a total knee replacement system. Furthermore, an outer membrane is used to simulate the viscoelastic effects exhibited by fibrous structures, fatty tissues, and muscle mass enveloping the joint on the total knee replacement kinematics.
摘要:
A femoral component of a hip endoprosthesis includes a lateral supporting wedge designed to be supported by the proximal lateral femur when in use. The wedge can be an integral part of the material of the femoral component or it can be placed on a standard component by cementing or preferably by a male/female socket fit. The lateral surface of the wedge forms an angle of about 10.degree.-20.degree. with the midline of the distal portion of the stem and has an anterior-posterior width of about 8.30 mm, preferably about 10-20 mm, and a medial-lateral extension of the lateral surface of the stem of at least 10 mm, preferably 10-30 mm. An apparatus for testing the endurance of femoral components includes a cable corresponding to the ilio-tibial band. Such an apparatus more accurately models hip biomechanics and thus permits a more accurate test of the stresses on femoral component designs.
摘要:
A femoral component of a hip endoprosthesis includes a lateral supporting wedge designed to be supported by the proximal lateral femur when in use. The wedge can be an integral part of the material of the femoral component or it can be placed on a standard component by cementing or preferably by a male/female socket fit. The lateral surface of the wedge forms an angle of about 10.degree.-20.degree. with the midline of the distal portion of the stem and has an anterior-posterior width of about 8-30 mm, preferably about 10-20 mm, and a medial-lateral extension of the lateral surface of the stem of at least 10 mm, preferably 10-30 mm.
摘要:
The invention embodies the construction and implementation of synthetic muscle elements into numerous prosthetic devices. The aforesaid synthetic muscle elements consist of piezoelectric Gels; which function to motivate artificial limbs, rotate artificial joints, institute peristaltic motion in synthetic muscle systems and perform other activities consistant with the operation of organic muscle tissue. Sensory elements and ancillary systems embodied within said synthetic muscle means are responsive to evoked potentials generated by the neurons or other impulse conducting structures of the user. The aforesaid synthetic muscle has the additional capacity to sense, measure and act in a compensatory fashion to adjust their operation to biochemicals emitted by the user including, neural humoral secretions, endocrine levels, the formation of metabolites and the tension or partial pressures of gases such as CO.sub.2, O.sub.2, or other substances.