Abstract:
The articular cartilage according to the invention is made of pure cartilage and is provided with incisions (12) on the surface facing the bone. The cartilage cells are preferably seeded on the surface provided with incisions (12). The method for producing the articular cartilage comprises the step of collecting cartilage from joints, wherein pure cartilage is collected without bone, and incisions are made on the surface of the cartilage intended to face the bone. It is preferably fresh frozen until use. The device for harvesting articular cartilage, comprises handle and cutting blade, wherein the cutting blade (4) is curvilinear and is pro-vided with spacer elements (5), meanwhile the device for producing incisions in articular cartilages comprises handle (2) and a bridge (3) connected to said handle (2) and being provided with one or more cutting blade(s) (4). During the method for applying the articular cartilage the articular cartilage is fixed by thin surgical yarn stitches, by fibrin glue or by small anchors (Fig.8).
Abstract:
The present invention is directed to crafting of cartilage to facilitate disinfection, cleaning, devitalization, recellularization, and integration after implantation. The present invention also is directed to cleaning and devitalization of cartilage. Moreover, the present invention provides processes for recellularization of cartilage and implantation of cartilage
Abstract:
The invention is directed toward a cartilage repair assembly comprising a shaped allograft two piece construct (20) with a demineralized cancellous cap (30) and a mineralized cylindrical base member (22) defining a blind bore (23) wrth a through going transverse bore (28) intersecting the blind bore (23). The demineralized cancellous cap (30) has a cylindrical top portion (32) and a smaller diameter cylindrical stem (36) extending away from the top portion (32) which fits into the blind bore (23) of the mineralized base member (22). The cap stem (36) defines a transverse through going bore (37) which is aligned with the through going bore (28) of the base member (22) to receive a cylindrical cortical pin (40) holding the cap (30) within the base member (22). The shaped structure (20) is dimensioned to fit in a drilled bore in a cartilage delect area so that the assembly engages the side wall of the drilled bore in an interference fit.
Abstract:
The present invention relates to an implant for repairing a cartilage defect comprising a first layer and a second layer. The first layer comprises a membrane-like structure and the second layer comprises a sponge-like structure with directional and/or interconnected pores. The first layer is facing the synovial space and the second layer is located towards bone.
Abstract:
A repair kit (10) for use in the repair of damaged cartilage present at or on the surface of a bone site (20) in an animal or human, in which the damaged cartilage is removed from the site and a groove (25) is formed about the site and into the bone (20) prior to implantation of the repair kit (10), and said repair kit comprising: a pad (11) of bio-compatible material shaped and dimensioned to occupy at least part of the site from which the damaged tissue has been removed; elongate connecting portions (14) attached to the periphery of the pad (11) in an array corresponding in shape to the groove (25), said portions being intended to extend away from the general plane of the pad so as to be introduced into the groove and to be anchored therein; and a retaining element (26) slidable depthwise of the groove (25) in order to anchor at least some of the connecting portions (14) in the groove (25) and thereby locate and retain the pad (11) in said part of the bone site. There is also disclosed a method of preparation of the bone site prior to implantation, and also an implant delivery device (46), on which the repair kit can be temporarily stored, and which also serves to deliver the pad, the elongate connecting portions (14) and the retaining element (47) on to the prepared site.
Abstract:
A chondrocyte delivery device that has a main body (14) containing chondrocytes. The delivery device is at least partially insertable into a bone (18) of a patient and allowed or caused to elute the chondrocyte from the main body of the delivery device to damaged cartilage (17) in the region.
Abstract:
The devices dsclosed herein are composite implantable devices having a gradient of one or more of the following: materials, macroarchitecture, microarchitecture, or mechanical properties, which can be used to select or promote attachment of specific cell types on and in the devices prior to and/or after implantation. In preferred embodiments, the implants include complex three-dimensional structure, including curved regions and saddle-shaped areas. In various embodiements, the gradient forms a transition zone in the device from a region composed of materials or having properties best suited for one type of tissue to a region composed of materials or having properties suited for a different type of tissue. Methods to improve these devices for use in repair or replacement of cartilage and/or bone have been developed, which specifically address 1) the selection of the appropriate polymeric material for the cartilage region, 2) mechanical testing of the bone region including the effect of porosity and polymer/calcium phosphate r
Abstract:
Compositions, methods of production and use, and kits for an osteochondral graft involving both articular cartilage and underlying bone are provided.
Abstract:
The invention relates to a cartilage substitute structure (1) which uses anchor elements (2) that penetrate into the bone and are fixed therein by means of friction, clamping or a positive-fit, in order to ensure that said cartilage substitute structure (1) is fixed in a mechanically secure manner. This type of anchoring process allows the connection between the bone and the cartilage substitute structure (1) to optionally remain open, thus making it suitable for the transfer of cells from the bone marrow into the cartilage substitute structure (1).
Abstract:
The invention concerns a device with a constant perfusion system for maintenance of viable cells, tissues and composite implants, which involves a pressure generator for producing rhythmic pulses of pressure on the biological specimen. All the operative parameters of the system are controllable, easily manipulated. The invention further concerns a scaffold which is used as a growth supportive base for various cells and tissue explants from three-dimensional tissue comprising naturally derived connective or skeletal tissue cross-linked with one of the following: hyaluronic acid, proteoglycans, glycosaminolycans, chondroitin sulfates, heparan sulfates, heparins and dextran sulfates.