86 results about "Prosthesis use" patented technology

Pre-surgical planning for cranial and facial reconstruction includes preparing a computer generated jaw or skull model for determining a locational position for a dental implant, a surgical bone implant to repair missing bone in the cranium, install ear prostheses, and / or install nose prostheses. The computer generated jaw or skull model is made from medical imagery and computer aided design. A surgical guide is prepared with oversize holes in registration with analogs for the dental or surgical bone implants to be inserted at the locational positions determined by a dentist or surgeon in the jaw or cranial skull model. The surgical guide is fitted atop each analog, and the surgical guide is bonded to the jaw or skull model at a predetermined angle of the analog in the jaw or skull. The surgical guide is removed from the model attached to the law or skull of a patient for accurate drilling during the dental or surgical procedure for insertion of the implants into the jaw or skull of the patient.

Embodiments of instrumentation and methods are provided for the insertion of intervertebral disc prosthesis. The instrumentation of the embodiments comprises a guide comprising at least two lateral faces, at least one upper plate, at least one lower plate, at least one retainer, a cage defining an insertion axis for the prosthesis, and an angle adjuster adapted to adjust an angle formed by the insertion axis and an antero-posterior sagittal axis; and at least one separator sized to maintain a gap between the upper vertebra and the lower vertebra. Methods for implanting a prosthesis using the disclosed instrumentation comprise implanting a pin in the median sagittal axis of a vertebrae; measuring the dimensions of the intervertebral space; choosing the prosthesis; choosing the guide; adjusting the angle adjuster; positioning the guide adjacent to the intervertebral space; inserting the prosthesis into the guide; and inserting the prosthesis into the intervertebral space.

The invention relates to a prosthesis (100) used for preventing valve reflux. The prosthesis comprises a fixing unit (110), a connecting piece (120) and a closing assisting piece (130). The fixing unit (110) comprises a fixing piece (111) and an anchoring piece (112). The connecting piece (120) is flexible. The far end portion of the connecting piece (120) is connected with the near end portion of the fixing piece (110). The near end portion of the connecting piece (120) is connected with the far end portion of the closing assisting piece (130). The fixing piece (111) is fixed to the atrium wall or the valve ring of a patient through the anchoring piece (112). The width of the unfolded fixing piece (111) is smaller than two thirds the perimeter of the valve tissue ring. The closing assisting piece (130) is located between the autologous valve leaflets of the patient when the closing assisting piece (130) is in the free state. The maximum width of the closing assisting piece (130) is smaller than the maximum width of a single unfolded autologous valve leaflet. The near end of the anchoring piece (112) is provided with an anti-disengagement end (1120). The prosthesis is adjustable in position, accurate in positioning, capable of being firmly anchored and not prone to adhering to tissue near the valve ring of the patient.

An improved socket for a prosthesis uses a liner material providing fluid flow through a porous matrix whose local pressure is adjusted by a control system communicating with multiple valves and pressure sensors. Control of pressure in a viscoelastic material provides an improved trade-off between comfort and stability.

Pre-surgical planning for cranial, facial, limb and digit muscular and bone reconstruction includes preparing a computer generated anatomical model for determining a locational position for a dental implant, a surgical bone implant to repair missing bone in the cranium, limbs and digits and to install ear, eye or nose prostheses. The computer generated anatomical model is made from medical imagery and computer aided design. A surgical guide is prepared with oversize holes in registration with analogs for the dental or surgical bone implants to be inserted in the anatomical model. The surgical guide is fitted atop each analog, and bonded to the anatomical model at a predetermined angle of the analog in the anatomy. The surgical guide is removed and attached to the anatomy of a patient for accurate drilling for insertion of the implants or prostheses into the body of the patient.

The invention relates to the field of medical prostheses, and discloses a trabecular bone structure and a prosthesis using the structure. The trabecular bone structure comprises a body, wherein the body is constructed into a three-dimensional porous structure; the three-dimensional porous structure comprises a plurality of wire diameters and a plurality of pores formed by interlacing and connecting the wire diameters; each pore is communicated with each other, and the equivalent diameter of each pore is different; and the equivalent diameter of each pore ranges from 100 to 400 microns, and theporosity of the three-dimensional porous structure ranges from 50 to 80%. The trabecular bone structure is more beneficial to bone ingrowth of patients after surgery, so that the recovery effect of patients after surgery can be effectively improved.