US 9,808,229 B2
Assembly for augmenting hard tissue
Jörg Mayer, Niederlenz (CH); and Marcel Aeschlimann, Ligerz (CH)
Assigned to WOODWELDING AG, Stansstad (CH)
Appl. No. 14/406,816
Filed by Woodwelding AG, Stansstad (CH)
PCT Filed Jun. 12, 2013, PCT No. PCT/CH2013/000101
§ 371(c)(1), (2) Date Dec. 10, 2014,
PCT Pub. No. WO2013/185250, PCT Pub. Date Dec. 19, 2013.
Claims priority of provisional application 61/659,663, filed on Jun. 14, 2012.
Prior Publication US 2015/0182210 A1, Jul. 2, 2015
Int. Cl. A61B 17/00 (2006.01); A61F 2/30 (2006.01); A61C 8/00 (2006.01); A61B 17/68 (2006.01); A61B 17/88 (2006.01); A61F 2/44 (2006.01); A61B 17/04 (2006.01)
CPC A61B 17/00491 (2013.01) [A61B 17/686 (2013.01); A61B 17/8822 (2013.01); A61C 8/0016 (2013.01); A61C 8/0018 (2013.01); A61C 8/0089 (2013.01); A61F 2/30734 (2013.01); A61B 17/0401 (2013.01); A61B 2017/00004 (2013.01); A61B 2017/005 (2013.01); A61F 2/44 (2013.01); A61F 2002/30065 (2013.01); A61F 2002/30556 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A method of augmenting hard tissue and/or hard tissue replacement material method comprising the steps of:
providing an initial opening in the hard tissue and/or hard tissue replacement material;
providing a thermoplastic augmentation element and a tool;
placing the augmentation element in the initial opening, placing the tool in contact with a face of the augmentation element and pressing the tool against the face while energy is coupled into the tool and while a periphery of a liquefaction interface of the tool and the augmentation element is within the opening;
thereby liquefying material of the augmentation element at the liquefaction interface(s) to yield liquefied material;
causing portions of the liquefied material to penetrate into structures of the hard tissue and/or hard tissue replacement material;
allowing the liquefied material to harden and to thereby become augmentation material; and
removing the tool;
wherein at least one of the following conditions is fulfilled:
a. in at least one axial depth, the augmentation element is segmented as a function of the circumferential angle so that at this axial depth the circumferential wall of the initial opening in first regions is in contact with the augmentation element and in second regions is not in contact with the augmentation element;
b. in at least one axial depth of a resulting, augmented opening, the augmentation material is caused to be segmented as a function of the circumferential angle;
c. in a resulting, augmented opening, the augmentation material is provided in at least two augmented regions axially spaced from each other, wherein between the two augmented regions there is a non-augmented region;
d. the augmentation element does not have the symmetry of a rotational cylinder but is asymmetric with respect to rotation around any axis.