WO2002015948A2 - Method of treating and dehydrating bone for implantation - Google Patents
Method of treating and dehydrating bone for implantation Download PDFInfo
- Publication number
- WO2002015948A2 WO2002015948A2 PCT/US2001/026553 US0126553W WO0215948A2 WO 2002015948 A2 WO2002015948 A2 WO 2002015948A2 US 0126553 W US0126553 W US 0126553W WO 0215948 A2 WO0215948 A2 WO 0215948A2
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- WIPO (PCT)
- Prior art keywords
- bone
- mechanical strength
- conserving
- agent
- conserving agent
- Prior art date
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3683—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix subjected to a specific treatment prior to implantation, e.g. decellularising, demineralising, grinding, cellular disruption/non-collagenous protein removal, anti-calcification, crosslinking, supercritical fluid extraction, enzyme treatment
- A61L27/3691—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix subjected to a specific treatment prior to implantation, e.g. decellularising, demineralising, grinding, cellular disruption/non-collagenous protein removal, anti-calcification, crosslinking, supercritical fluid extraction, enzyme treatment characterised by physical conditions of the treatment, e.g. applying a compressive force to the composition, pressure cycles, ultrasonic/sonication or microwave treatment, lyophilisation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4644—Preparation of bone graft, bone plugs or bone dowels, e.g. grinding or milling bone material
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3604—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
- A61L27/3608—Bone, e.g. demineralised bone matrix [DBM], bone powder
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3641—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the site of application in the body
- A61L27/3645—Connective tissue
- A61L27/365—Bones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3683—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix subjected to a specific treatment prior to implantation, e.g. decellularising, demineralising, grinding, cellular disruption/non-collagenous protein removal, anti-calcification, crosslinking, supercritical fluid extraction, enzyme treatment
- A61L27/3687—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix subjected to a specific treatment prior to implantation, e.g. decellularising, demineralising, grinding, cellular disruption/non-collagenous protein removal, anti-calcification, crosslinking, supercritical fluid extraction, enzyme treatment characterised by the use of chemical agents in the treatment, e.g. specific enzymes, detergents, capping agents, crosslinkers, anticalcification agents
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- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
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- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
- A61F2002/2817—Bone stimulation by chemical reactions or by osteogenic or biological products for enhancing ossification, e.g. by bone morphogenetic or morphogenic proteins [BMP] or by transforming growth factors [TGF]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
- A61F2002/2835—Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30112—Rounded shapes, e.g. with rounded corners
- A61F2002/30131—Rounded shapes, e.g. with rounded corners horseshoe- or crescent- or C-shaped or U-shaped
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30879—Ribs
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30891—Plurality of protrusions
- A61F2002/30892—Plurality of protrusions parallel
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- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30904—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves serrated profile, i.e. saw-toothed
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4644—Preparation of bone graft, bone plugs or bone dowels, e.g. grinding or milling bone material
- A61F2002/4649—Bone graft or bone dowel harvest sites
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0004—Rounded shapes, e.g. with rounded corners
- A61F2230/0013—Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
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- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/02—Materials or treatment for tissue regeneration for reconstruction of bones; weight-bearing implants
Definitions
- Monolithic bone intended for implantation is treated in order to conserve its
- This treatment is useful when combined with a number of methods of dehydrating the bone, e.g. dehydrating under ambient or near ambient conditions,
- processing e.g., to preserve the graft for later use and to remove immunogenic cellular materials
- the porous matrix is typically contacted with one or more treatment fluids to variously clean, defat, sterilize, virally inactivate, disinfect, and/or demineralize the bone or to impregnate the bone with one or more pharmacological agents (antibiotics, bone growth factors, etc.) so the bone can act as a drug delivery system.
- one or more treatment fluids to variously clean, defat, sterilize, virally inactivate, disinfect, and/or demineralize the bone or to impregnate the bone with one or more pharmacological agents (antibiotics, bone growth factors, etc.) so the bone can act as a drug delivery system.
- Some treatment processes can work against conservation of the mechanical strength of bone and can lessen the bone's weight bearing properties. Processing requirements can also create dimensional changes in the allograft bone. Such changes of dimension can create damage within the tissue, and may also make it difficult for a machined piece to mechanically engage with surgical instruments, other allografts, or the prepared surgical
- Lyophilization freeze-drying, i.e., freezing, then sublimation of moisture
- Lyophilization can result in damage to the bone due to dimensional changes that occur during the freezing and dehydrating operations.
- the adverse mechanical changes appear to be associated with damage occurring in the bone matrix, specifically, ultrastructural cracks along the collagen fibers.
- the mechanical strength- conserving agent is not acting as a cryopreservative (i.e., minimizing crystal growth during freezing) but rather in some new, not entirely understood, manner to diminish the dimensional changes associated with lyophilization. It has been determined that the diminishment of dimensional changes is related to the extent to which the mechanical strength- conserving agent is not acting as a cryopreservative (i.e., minimizing crystal growth during freezing) but rather in some new, not entirely understood, manner to diminish the dimensional changes associated with lyophilization. It has been determined that the diminishment of dimensional changes is related to the extent to which the mechanical
- monolithic bone intended for implantation in order to conserve the mechanical strength of the bone during its dehydration and subsequent packaging and storage and to substantially maintain such strength throughout its rehydration and subsequent
- implant containing a mechanical strength-conserving agent and, optionally, one or more medically/surgically useful substances, e.g., an osteogenic material such as bone
- BMPs morphogenic proteins
- the method comprises: contacting the bone with a mechanical strength-conserving amount of at least one
- biocompatible mechanical strength-conserving agent said agent being a liquid organic material or solution, mixture, or suspension thereof, which is capable of penetrating and remaining in the bone during its dehydration, packaging and storage; dehydrating the bone containing the mechanical strength-conserving agent; and,
- the invention includes the dehydrated bone obtained by the foregoing method(s) and use of bone obtained by the invention herein.
- pieces of human or animal bone i.e., pieces of bone, autograft, allograft or xenograft, that are of such size as to be capable of withstanding the sort of mechanical loads to which
- the monolithic bone of this invention is to be distinguished from particles, filaments, threads, etc. as disclosed in U. S. Patent Nos. 5,073,373, 5,314,476 and 5,507,813, which, due to their relatively small dimensions, are incapable of sustaining significant mechanical loads, either individually
- monolithic bone refers to fully mineralized bone, i.e., bone with its full natural level of mineral content, and to such bone that has been demineralized to some minor extent, i.e., to an extent which reduces the original mechanical strength of the bone by no more than about 50 percent.
- the monolithic bone can be provided as a single integral piece of bone or as a piece of bone permanently assembled from a number of smaller bone elements, e.g., as
- osteogenic monolithic bone
- additional materials e.g., as disclosed in U.S. Patent No. 5,290,558 the contents of which are incorporated herein by reference, which will remain with the bone after its rehydration and will be present at the time of
- toughness as utilized herein is intended to refer to any characteristic that qualitatively can be described as the way in which the bone fails, i.e., how the bone undergoes deformation prior to fracture. For example, bone which exhibits improvement in toughness would be more desirable than bone having less toughness.
- toughness is a measure of the energy absorbed by the osteoimplant prior to breakage and is expressed in units of Newton-meters (N-m).
- conserving agent shall demonstrate at least about 2% less decrease in length dimension as compared to bone that has been lyophilized. That is, bone treated in accordance with the invention herein will demonstrate less shrinkage after dehydration than bone that is lyophilized in the absence of a mechanical strength-conserving agent.
- the monolithic bone treated in accordance with the invention i.e., dehydrating such bone in the presence of a mechanical strength- conserving agent shall demonstrate at least greater than about 19 percent increase in toughness as compared to bone that has been lyophilized in the absence of a mechanical strength-conserving agent. That is, bone treated in accordance with the invention herein
- biocompatible and expressions of like import shall be understood to mean the absence of stimulation of an undesired severe, long-lived or escalating biological response to an implant and is distinguished from a mild, transient
- Figure 1 is a graphical representation of a standard freeze-drying process.
- Figure 2 is a graphical representation of an alternative freeze-drying process in which the tissue is subjected to some level of dehydration prior to freezing and sublimation of any remaining moisture.
- Figure 3 is a representation of a ramp-shaped implant.
- Figure 4 is a graphical representation of the dimension change of bone implant prepared as in Example 5.
- Figure 5 is a graphical representation of the treatment effects on dimensional change.
- Bone for implantation is obtained, e.g., aseptically in a morgue or an operating
- the bone is cleansed, e.g., using 70% ethanol and washed with
- the bone may be treated with antibiotics such as polymyxin B sulfate, bacitracin, and/or gentamicin, and may contain trace amounts of
- Cleansing, cutting, sizing, shaping, container sterilization, filling, lyophilization, and stoppering may be functions are performed under conditions following industry standards for tissue handling.
- the bone employed in the invention is of monolithic proportions in contrast to "particles,” “filaments,” “threads,” “strips,” etc.,
- the bone treated according to the method of the invention is generally a relatively large piece or segment of donor bone and is intended for implantation into a correspondingly relatively large defect or other implantation site.
- the bone herein will possess dimensions of length on the order of about 2 mm to about 500 mm and preferably at least
- glycol triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol; polysaccharides and their derivatives, e.g., hyaluronic acid; polyoxyethylene- polyoxypropylene copolymer, e.g., of the type known and commercially available under the trade names Pluronic and Emkalyx; polyoxyethylene-polyoxypropylene block copolymer, e.g., of the type known and commercially available under the trade name
- Poloxamer alkylphenolhydroxypolyoxyethylene, e.g., of the type known and commercially available under the trade name Triton, and the like.
- Polyhydroxy ester for example, monoacetin, triacetin, poly(oxyalkylene) glycol ester, and the like.
- Fatty acid ester for example, polyoxyethylene-sorbitan-fatty acid esters; e.g., mono- and tri-lauryl, palmityl, stearyl, and oleyl esters; e.g., of the type available under the trade name Tween from Imperial Chemical Industries; polyoxyethylene fatty acid esters;
- bottle containing bone and conserving agent is subjected to, e.g., processes including but not limited to: contacting the bone with a graded series of dehydrating liquids; subjecting the bone to microwave energy such as described in U.S. Pat. No. 4,656,047 the contents of which are incorporated by reference herein; subjecting the bone to heat at ambient or sub-atmospheric pressures, e.g., drying oven at temperatures from about 35°C. to about
- the specimen remains in the oven for a period of time necessary to evaporate off the remaining solvent, to remove the remaining water from the tissue, and to allow
- Glycerol application prior to lyophilization reduces brittleness in the bone
- penetration was affected by either of two treatment processes: Specimens suspended in a stirred solution; and specimens suspended in an ultrasonic bath.
- the treatment solution used was 50% (v/v) aqueous glycerol, and also contained 0.5%(w/v) methylene blue dye to allow assessment of penetration. Specimens of each group were removed at 1 hour, 4 hours, 11 hours, 24
- table 3 summarizes penetration into Haversian Canals (HC) and Matrix (M) regions of the middle ( 1 cm) section.
- Human bone was treated for viral inactivation using processes described in US patent 5,846,484. From these treated bones, human diaphyseal bone segments were shaped into a ramped structure (figure 3) using processes described in U.S. Patent Appln.
- the threaded hole was also tested using a mating screw prior to the
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01966222A EP1311309A2 (en) | 2000-08-24 | 2001-08-24 | Method of treating and dehydrating bone for implantation |
CA002420113A CA2420113A1 (en) | 2000-08-24 | 2001-08-24 | Method of treating and dehydrating bone for implantation |
AU2001286755A AU2001286755A1 (en) | 2000-08-24 | 2001-08-24 | Method of treating and dehydrating bone for implantation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US64452100A | 2000-08-24 | 2000-08-24 | |
US09/644,521 | 2000-08-24 |
Publications (3)
Publication Number | Publication Date |
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WO2002015948A2 true WO2002015948A2 (en) | 2002-02-28 |
WO2002015948A3 WO2002015948A3 (en) | 2002-06-13 |
WO2002015948A9 WO2002015948A9 (en) | 2003-04-03 |
Family
ID=24585261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2001/026553 WO2002015948A2 (en) | 2000-08-24 | 2001-08-24 | Method of treating and dehydrating bone for implantation |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1311309A2 (en) |
AU (1) | AU2001286755A1 (en) |
CA (1) | CA2420113A1 (en) |
WO (1) | WO2002015948A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008073582A2 (en) * | 2006-10-27 | 2008-06-19 | Edwards Lifesciences Corporation | Biological tissue for surgical implantation |
US9492230B2 (en) | 2010-03-23 | 2016-11-15 | Edwards Lifesciences Corporation | Methods of conditioning sheet bioprosthetic tissue |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4277238A (en) * | 1978-09-28 | 1981-07-07 | Masataka Katagiri | Artificial bonelike graft and method for producing the same |
WO1995019797A1 (en) * | 1994-01-21 | 1995-07-27 | Osteotech, Inc. | Preparation of bone for transplantation |
US5797871A (en) * | 1994-08-19 | 1998-08-25 | Lifenet Research Foundation | Ultrasonic cleaning of allograft bone |
WO1999051170A1 (en) * | 1998-04-02 | 1999-10-14 | Crosscart, Inc. | Bone xenografts |
WO1999066967A1 (en) * | 1998-06-24 | 1999-12-29 | International Heart Institute Of Montana Foundation | Process for making compliant dehydrated tissue for implantation |
US6162258A (en) * | 1999-08-25 | 2000-12-19 | Osteotech, Inc. | Lyophilized monolithic bone implant and method for treating bone |
US6293970B1 (en) * | 1998-06-30 | 2001-09-25 | Lifenet | Plasticized bone and soft tissue grafts and methods of making and using same |
-
2001
- 2001-08-24 CA CA002420113A patent/CA2420113A1/en not_active Abandoned
- 2001-08-24 AU AU2001286755A patent/AU2001286755A1/en not_active Abandoned
- 2001-08-24 EP EP01966222A patent/EP1311309A2/en not_active Withdrawn
- 2001-08-24 WO PCT/US2001/026553 patent/WO2002015948A2/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4277238A (en) * | 1978-09-28 | 1981-07-07 | Masataka Katagiri | Artificial bonelike graft and method for producing the same |
WO1995019797A1 (en) * | 1994-01-21 | 1995-07-27 | Osteotech, Inc. | Preparation of bone for transplantation |
US5797871A (en) * | 1994-08-19 | 1998-08-25 | Lifenet Research Foundation | Ultrasonic cleaning of allograft bone |
WO1999051170A1 (en) * | 1998-04-02 | 1999-10-14 | Crosscart, Inc. | Bone xenografts |
WO1999066967A1 (en) * | 1998-06-24 | 1999-12-29 | International Heart Institute Of Montana Foundation | Process for making compliant dehydrated tissue for implantation |
US6293970B1 (en) * | 1998-06-30 | 2001-09-25 | Lifenet | Plasticized bone and soft tissue grafts and methods of making and using same |
US6162258A (en) * | 1999-08-25 | 2000-12-19 | Osteotech, Inc. | Lyophilized monolithic bone implant and method for treating bone |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008073582A2 (en) * | 2006-10-27 | 2008-06-19 | Edwards Lifesciences Corporation | Biological tissue for surgical implantation |
WO2008073582A3 (en) * | 2006-10-27 | 2009-09-24 | Edwards Lifesciences Corporation | Biological tissue for surgical implantation |
CN101626682B (en) * | 2006-10-27 | 2014-04-16 | 爱德华兹生命科学公司 | Biological tissue for surgical implantation |
CN103933612A (en) * | 2006-10-27 | 2014-07-23 | 爱德华兹生命科学公司 | Biological Tissue For Surgical Implantation |
US9918832B2 (en) | 2006-10-27 | 2018-03-20 | Edwards Lifesciences Corporation | Biological tissue for surgical implantation |
US9492230B2 (en) | 2010-03-23 | 2016-11-15 | Edwards Lifesciences Corporation | Methods of conditioning sheet bioprosthetic tissue |
US9498287B2 (en) | 2010-03-23 | 2016-11-22 | Edwards Lifesciences Corporation | Methods of conditioning sheet bioprosthetic tissue |
US9498288B2 (en) | 2010-03-23 | 2016-11-22 | Edwards Lifesciences Corporation | Methods of conditioning sheet bioprosthetic tissue |
US10092399B2 (en) | 2010-03-23 | 2018-10-09 | Edwards Lifesciences Corporation | Methods of conditioning sheet bioprosthetic tissue |
US11213385B2 (en) | 2010-03-23 | 2022-01-04 | Edwards Lifesciences Corporation | Methods of conditioning sheet bioprosthetic tissue |
Also Published As
Publication number | Publication date |
---|---|
CA2420113A1 (en) | 2002-02-28 |
AU2001286755A1 (en) | 2002-03-04 |
WO2002015948A9 (en) | 2003-04-03 |
EP1311309A2 (en) | 2003-05-21 |
WO2002015948A3 (en) | 2002-06-13 |
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