摘要:
Biomaterials, in particular bone foams, a process for preparing such materials as well as an applicator for applying the biomaterials directly to the patient's application site, and the use of a composition comprising water, a surfactant and a propellant in the preparation of a bone foam for the preparation of a calcium phosphate foam wherein the foam is obtainable by the mixture of at least two phases, a first phase comprising water and optionally a propellant, a second phase comprising one or more sources for calcium and/or phosphate, and wherein the foaming is performed during the mixture of the at least two phases to provide an improved calcium phosphate foam, process for the preparation of a calcium phosphate foam, use of a composition, solid state structure, calcium phosphate cement foam and bone foam applicator.
摘要:
The present invention provides tools and methods for mapping and measuring the articular surface of a joint (or of any bony surface) and for fabricating a prosthetic device based on this recorded data. In one embodiment, once the defect of the chondral surface has been identified, a guide pin (20) is inserted arthroscopically. A fixation screw (10) is driven into the subchondral bone in relation to a reference axis that is approximately central to the defect, the fixation device also serving to define a tangent point to the surrounding articular surface. A measuring tool (70) having a static post that establishes the axial location of origin is inserted on the reference axis. Data recorded during the mapping procedure is entered into parametric engineering design software of similar algorithm to define a three dimensional surface matched to the bearing surface geometry to be implanted and reproduce the anatomic contours mapped (Figure 1).
摘要:
A tissue collection and processing system for collecting bone fragments and tissue therein. The tissue collection and processing system includes a collection vessel, a collection vessel cap and a filter container. The collection vessel has an opening formed therein. The collection vessel cap is capable of engaging the collection vessel to substantially seal the opening. The collection vessel cap or the collection vessel includes a first port and a second port. The filter container is mounted with respect to the first port.
摘要:
A bone anchor is provided bone anchor comprising an anchor member (1) having a first end (11) and a second end (12) and an tubular section between the first end and the second end, a longitudinal axis (L) extending from the first end to the second end, and a bone engagement structure (16) for engaging the bone in at least a portion of the tubular section; wherein the tubular section (13) is expandable in a radial direction by reducing a distance between the first end and the second end and wherein the anchor member (1) is made of a first material; a core member (2, 2') having a first end (21) and a second end (22) and being insertable into the anchor member and connectable thereto, the core member (2, 2') being configured to cooperate with the anchor member (1) such that by actuating the core member with respect to the anchor member the tubular section (13) is expandable; characterized in that the core member (2, 2') is made of a second material that is different from the first material.
摘要:
Instruments and associated methods are disclosed for treating joints, and particularly bone tissue. One of these instruments may be a positioning instrument for controlled delivery of a device to a target site of the bone tissue being treated. The positioning instrument may comprise a main body extending at one end into an indicator probe for visual determination of a target site of a bone to be treated, and at an opposite end into a handle. A rail extends from the main body. The instrument also includes an alignment guide having a device portal for insertion of a device therethrough, the alignment guide being detachable and movable along a length of the rail. The device may comprise an implant insertion tool, an injection catheter, a cavity creation tool such as a bone drill, for example, or the device may be an implantable device.
摘要:
Die Erfindung betrifft ein Lagerungs- und Mischsystem für pastenförmige Zweikomponenten-Polymethylmethacrylat-Knochenzemente, das Lagerungs- und Mischsystem aufweisend eine röhrenförmige Kartusche (1) mit einem zylindrischen Innenraum (9), einen axial in dem Innenraum (9) der Kartusche (1) verschiebbaren Austragskolben (7), eine axial in der röhrenförmigen Kartusche (1) angeordnete Trennwand (22), einen Kartuschenkopf (30, 36), der ein Ende der röhrenförmigen Kartusche (1) verschließt, wobei der Kartuschenkopf (30, 36) eine schlitzförmige Öffnung aufweist, wobei die Trennwand (22) durch die schlitzförmige Öffnung des Kartuschenkopfs (30, 36) aus dem Innenraum (9) der Kartusche (1) herausragt, wobei die Trennwand (22) den durch den Austragskolben (7) und den Kartuschenkopf (30, 36) begrenzten zylindrischen Innenraum (9) der Kartusche (1) in zwei räumlich voneinander getrennte Hohlräume (24, 26) teilt, wobei in dem ersten Hohlraum (24) eine erste pastenförmige Zementkomponente enthalten ist und in dem separaten zweiten Hohlraum (26) eine zweite pastenförmige Zementkomponente enthalten ist, und wobei die Trennwand (22) durch die schlitzförmige Öffnung des Kartuschenkopfs (30, 36) herausziehbar ist, so dass die beiden getrennten Hohlräume (24, 26) nach Herausziehen der Trennwand (22) miteinander verbunden sind. Die Erfindung betrifft auch ein Verfahren zur Vermischung von pastenförmigen Zementkomponenten eines pastenförmigen Polymethylmethacrylat-Knochenzements mit einem solchen Lagerungs- und Mischsystem.
摘要:
A bone anchor is provided, comprising a shank (2, 2', 2") having a free end (3), a channel (6, 6', 6") extending through the shank (2, 2', 2") to the free end (3) and having a longitudinal axis (C) and at least one opening (9) in a wall of the shank which connect the channel with the outside; wherein a narrowing member (10, 10', 10") is provided in the channel (6, 6', 6") in a region at or close to the free end (3) that narrows a cross-section of the channel without closing the channel in such a manner that bone cement or another substance which is introduced into the channel is prevented from exiting through the free end (3).