Abstract:
The present invention is directed to a resorbable containment device for use in treating voids in bone and restoring the anatomy of diseased or fractured bone. The resorbable containment device may be a balloon of varied size or shape to conform to the bone to be treated and may be deployed in any type of bone where collapsed fractures of cortical bone may be treated by restoring the bone from its inner surface. The containment device may be formed from a pluronic based polymer and may degrade in-vivo within a period of weeks after implantation into bone. The balloon may have multiple layers to provide desired surface characteristics, resistance to puncture and tearing, or other beneficial properties, as appropriate for the particular application of the device.
Abstract:
The present invention relates in general to implantable flexible bone composites, and method for preparing the same. The flexible bone composite includes at least one polymeric layer and at least one calcium-containing layer. The polymeric layer can be a polymeric layer including a synthetic polymer. The calcium-containing layer can include a calcium compound such as β-Ca3(PO4)2. The flexible bone composites of the invention are useful as bone void fillers and have improved handling characteristics.
Abstract translation:本发明一般涉及可植入的柔性骨组合物及其制备方法。 柔性骨复合材料包括至少一个聚合物层和至少一个含钙层。 聚合物层可以是包含合成聚合物的聚合物层。 含钙层可以包括钙化合物,例如β-Ca 3(PO 4)2 N 2。 本发明的柔性骨复合材料可用作骨隙填料并且具有改进的处理特性。
Abstract:
The present invention relates in general to implantable compositions, and method for preparing same, containing a calcium salt-containing component, optionally demineralized bone, a plurality of discrete fibers, optionally a flow additive, and optionally continuous reinforcing fibers or an array of organized fibers in the form of mesh. Advantageously, the discrete fibers have a specific aspect ratio (length/diameter) from about 50:1 to about 1000:1. The addition of a small amount of discrete fibers and/or the continuous reinforcing fibers or fiber mesh can cause drastic increases in certain mechanical properties including flexural strength, flexural toughness, and/or screw pullout strength.
Abstract:
The present invention relates in general to implantable compositions, and method for preparing same, containing a calcium salt-containing component, optionally demineralized bone, a plurality of discrete fibers, optionally a flow additive, and optionally continuous reinforcing fibers or an array of organized fibers in the form of mesh. Advantageously, the discrete fibers have a specific aspect ratio (length/diameter) from about 50:1 to about 1000:1. The addition of a small amount of discrete fibers and/or the continuous reinforcing fibers or fiber mesh can cause drastic increases in certain mechanical properties including flexural strength, flexural toughness, and/or screw pullout strength.
Abstract:
Methods and devices are shown for forming polymer fasteners into bone by expelling the polymer from a cannula. Devices and methods shown allow a user to form multiple fasteners of various sizes without re-loading a device. Devices and methods shown further provide temperature profiles during fastener formation that reduce or eliminate thermal necrosis. Devices and methods shown further provide fasteners with increased strength.
Abstract:
The present invention relates in general to implantable flexible bone composites, and method for preparing the same. The flexible bone composite includes at least one polymeric layer and at least one calcium-containing layer. The polymeric layer can be a polymeric layer including a synthetic polymer. The calcium-containing layer can include a calcium compound such as β-Ca3(PO4)2. The flexible bone composites of the invention are useful as bone void fillers and have improved handling characteristics.
Abstract:
The disclosed cranial flap clamp includes first and second clamping members and an extension member. A portion of the first member is positionable against inferior surfaces of a bone flap and skull and a portion of the second member is positionable against superior surfaces of the flap and skull. The extension member extends from the first member through the second member and fits between the flap and skull. Movement of either of the clamping members urges the inner surface of the first member against the inferior surfaces of the flap and skull and urges the inner surface of the second member against the superior surfaces of the flap and skull. The securing instrument includes features useful in cutting or crimping the extension member. The tension limiting assembly provides variable designs and combinations for limiting the tension placed on, and exerted by, the securing instrument during use.
Abstract:
A container is provided that is disposable, for first collecting blood delivered from a patient, preferably by means of a vacuum draw of blood into a container, and then the blood in the container is treated. The treatment is provided by an at least partial a back-and-forth or reciprocating motion of blood along membranes, such that filtrate components of the blood pass through the membrane walls and are collected, whereby retentate components of the blood are retained, with the back-and-forth motion being provided by means of a substantially constant vacuum draw, that provides a pumping action by means of a diaphragm pump. A replenishment liquid is automatically added, substantially proportional to the amount of filtrate components of the blood that are withdrawn. The membranes are protected by a means for removing body fats or other potentially harmful materials. Various automatic techniques are also supplied to control the amount of replenishment liquid being added, and the amount of retentate components of the blood that are retained. Various safety features are also provided.
Abstract:
Apparatus and method is provided for shaping bone, in which a cooling, lubricating and/or curative fluid is delivered by means of the shaping member, in order to cool or lubricate the shaping member where it contacts the bone and/or to provide a curative fluid to the shaped surface of the bone. Preferably, the cooling fluid is at least partially water, with or without a curative substance carried therein, with the liquid being delivered at the shaping end of the member, in a direction toward the shaped bone. The fluid may be provided through the interior of the shaping member to at least one relatively narrow opening located at the shaping end of the member, or may be provided by at least one exterior channel that runs along at least one wide side of the shaping member. Optionally, cooling liquid may also be delivered through the interior of the shaping member for discharge through at least one narrow side thereof. A porous medium that allows for controlled flow of lubricating fluid may also be provided on at least one wide side surface of the shaping member.
Abstract:
The present invention relates in general to implantable flexible bone composites, and method for preparing the same. The flexible bone composite includes at least one polymeric layer and at least one calcium-containing layer. The polymeric layer can be a polymeric layer including a synthetic polymer. The calcium-containing layer can include a calcium compound such as β-Ca3(PO4)2. The flexible bone composites of the invention are useful as bone void fillers and have improved handling characteristics.