Implants for creating connections to tissue parts, in particular to skeletal parts, as well as device and method for implantation thereof
First Claim
1. A method for creating a positive-fit connection capable of load-bearing to a tissue part in a human or animal body, the method comprising the steps of:
- providing a depression in a bone part, the depression comprising an inside surface,providing an implant comprising a material being biocompatible and liquefiable by mechanical oscillation, the form of the implant being roughly adapted to the depression,positioning the implant in the depression in a manner such that an implant region of the liquefiable material is in contact or can be brought into contact with the inside surface of the depression,contacting a proximal face of the positioned implant with a distal end of a resonator,transmitting mechanical oscillation from the resonator into the implant and simultaneously pressing the implant into the depression for a time sufficient for liquefying at least a part of the liquefiable material and for pressing it into surface unevennesses, cavities or pores of the inside surface of the depression, wherein a distal end of the resonator oscillates predominantly in a z-direction acting like a hammer on the proximal face of the implant and the implant is pressed into the depression in the same z-direction or the resonator comprising a transition element designed for a distal end thereof to oscillate predominantly perpendicularly to the z-direction and to press the implant against the tissue part in the z-direction, andletting the liquefiable material pressed into the surface unevennesses, cavities or pores re-solidify and, in a re-solidified state, constitute the positive-fit connection.
1 Assignment
0 Petitions
Accused Products
Abstract
Implants (7) for forming a positive connection with human or animal parts include a material, such as thermoplastics and thixotropic materials, that can be liquefied by means of mechanical energy. The implants (7) are brought into contact with the tissue part, are subjected to the action of ultrasonic energy while being pressed against the tissue part. The liquefiable material liquefies and is pressed into openings or surface asperities of the tissue part so that, once solidified, the implant is positively joined thereto. The implantation involves the use of an implantation device that includes a generator (2), an oscillating element, and a resonator (6). The generator (2) causes the oscillating element to mechanically oscillate, and the element transmits the oscillations to the resonator (6). The resonator (6) is used to press the implant (7) against the tissue part to transmit oscillations to the implant (7).
87 Citations
43 Claims
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1. A method for creating a positive-fit connection capable of load-bearing to a tissue part in a human or animal body, the method comprising the steps of:
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providing a depression in a bone part, the depression comprising an inside surface, providing an implant comprising a material being biocompatible and liquefiable by mechanical oscillation, the form of the implant being roughly adapted to the depression, positioning the implant in the depression in a manner such that an implant region of the liquefiable material is in contact or can be brought into contact with the inside surface of the depression, contacting a proximal face of the positioned implant with a distal end of a resonator, transmitting mechanical oscillation from the resonator into the implant and simultaneously pressing the implant into the depression for a time sufficient for liquefying at least a part of the liquefiable material and for pressing it into surface unevennesses, cavities or pores of the inside surface of the depression, wherein a distal end of the resonator oscillates predominantly in a z-direction acting like a hammer on the proximal face of the implant and the implant is pressed into the depression in the same z-direction or the resonator comprising a transition element designed for a distal end thereof to oscillate predominantly perpendicularly to the z-direction and to press the implant against the tissue part in the z-direction, and letting the liquefiable material pressed into the surface unevennesses, cavities or pores re-solidify and, in a re-solidified state, constitute the positive-fit connection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A kit for creating positive-fit connections capable of load-bearing to a tissue part, the kit comprising:
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a plurality of implants suitable for being implanted in a depression in a human or animal bone part to form the positive-fit connection therewith, the implant comprising a material being biocompatible and liquefiable by mechanical oscillation, the liquefiable material being arranged to be liquefied on distal surfaces to be brought into contact with an inside wall of the depression and the implant further comprising a proximal face suitable for transmission of mechanical oscillation into the implant and for simultaneously pressing the implant into the depression in order for the liquefiable material to be at least partly liquefied, and the liquefiable material being capable of being pressed into surface unevennesses, cavities or pores in the inside wall of the depression and to re-solidify therein to constitute the positive-fit connection, and an implantation device comprising a generator, an oscillation element and a resonator, the generator being designed for exciting the oscillation element into mechanical oscillation, the resonator and the oscillation element being connected to form an oscillation unit, the resonator being designed for a distal resonator end to predominantly oscillate in a z-direction and to act on the implant like a hammer and to simultaneously press the implant in the same z-direction into the depression, or the resonator comprising a transition element designed for a distal end thereof to oscillate predominantly perpendicularly to the z-direction and to press the implant in the z-direction into the depression. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40)
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41. An addition kit for creating positive-fit connections capable of load-bearing to a tissue part, said addition kit comprising:
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one or more than one implant suitable for being implanted in a depression in a human or animal bone part to form the positive-fit connection therewith, the implant comprising a material being biocompatible and liquefiable by mechanical oscillation, the liquefiable material being arranged to be liquefied on distal surfaces to be brought into contact with an inside wall of the depression and the implant further comprising a proximal face suitable for transmission of mechanical oscillation into the implant and for simultaneously pressing the implant into the depression in order for the liquefiable material to be at least partly liquefied, and the liquefiable material being capable to be pressed into surface unevennesses, cavities or pores in the inside wall of the depression and to re-solidify therein to constitute the positive-fit connection, and instructions for implanting the implant with the help of mechanical oscillation energy. - View Dependent Claims (42, 43)
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Specification