Bone treatment systems and methods
OwnerRobert Luzzi, John H. Shadduck +1inventors
InventorsRobert Luzzi, John H. Shadduck, Csaba Truckai
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Abstract
Bone cement formulations are provided that have an extended working time for use in vertebroplasty procedures and other osteoplasty procedures. In one embodiment, a settable bone cement includes a polymerizable composition with a powder component comprising an X-Ray contrast medium and a liquid component, wherein the setting time of the cement is at least about 25 minutes, at least about 30 minutes, at least about 35 minutes, and at least about 40 minutes.
Claims34
A settable bone cement, comprising:
- a polymerizable composition comprising:
- a powder component comprising an X-Ray contrast medium and;
- a liquid component;
- wherein the cement has a setting time of about 25 minutes or more.
A settable bone cement comprising:
- a powder component comprising polymethyl methacrylate (PMMA) and;
- a liquid component;
- wherein the bone cement provides a setting time of at least 25 minutes.
A bone cement comprising:
- a powder component comprising:
- about 64 to 75 wt. % PMMA;
- about 27 to 32 wt. % of an X-ray contrast medium;
- and
- about 0.4 to 0.8 wt. % benzoyl peroxide (BPO);
- wherein the amount of each is on the basis of the total weight of the powder component;
- and
- a liquid component comprising:
- greater than about 99 wt. % methyl methacrylate (MMA);
- less than about 1 wt. % N,N-dimethyl-p-toluidine (DMPT), about 30 to 120 ppm hydroquinone;
- wherein the amount of each on the basis of the total amount of the liquid component.
A method for injecting a bone cement to treat an abnormality in a bone, comprising:
- providing a bone cement having a setting time of about 25 minutes or more;
- injecting said bone cement into a vertebra of a patient using a bone cement injector system;
- and
- applying energy to the bone cement from an energy emitter in the injector system to thereby increase the viscosity of the bone cement and accelerate said setting time.
A method for anchoring an implant member in a bone with a bone cement, comprising:
- positioning an implant member in a bone of a patient;
- injecting a bone cement within the region of the bone-implant interface with an injector system, wherein said bone cement has a setting time of about 25 minutes or more;
- and
- applying energy to the bone cement from the injector system to thereby increase the viscosity of the bone cement and accelerate said setting time.
A bone cement kit comprising:
- a bone cement, comprising a powder component, comprising polymethyl methacrylate (PMMA), and a liquid component, wherein the bone cement provides a setting time of about 25 minutes or more;
- and
- a bone cement injector system configured to apply energy to the bone cement to thereby increase the viscosity of the bone cement and accelerate said setting time of said bone cement.
Dependencies are inferred from the claim text.