Adjustable bone stabilizing frame system

Abstract

By providing components securable to anchor pins or screws of different diameters as well as providing clamps which hold associated pins in any position during adjustments, an external fixation or adjustable frame structure is provided which is capable of being quickly and easily assembled in any desired configuration. In the present invention, the frame structure is retained in any assembled configuration in order to allow final adjustments to be made, prior to the final securement of the frame assembly in the precisely desired configuration by closure of each clamp member. In this way, an entire frame assembly is capable of being constructed, adjusted, and readjusted in order to assure each component is oriented in the precisely desired position prior to final closure of the clamping members. In one preferred embodiment, the clamping members employed in the frame structure of the present invention incorporate friction pins internally mounted in each clamp which engages the rod member once this rod is inserted into the jaws of the clamp. In this way, any rod member inserted into the clamping jaws contacts the surface of the jaws and the friction pin, preventing the rod member from sliding or moving relative to the clamp. In addition, by incorporating a uniquely constructed, moving wedge plate that is adjustably engageable with any cooperating anchor pin, secure affixation of the mounting member with the anchor pins of any diameter is easily achieved, regardless of the orientation configuration, or diameter of the anchor pin.

What is claimed is: 
     
         1 . A kit for assembly into an adjustable bone stabilizing frame comprising:
 (a) a plurality of pin clamping and mounting members comprising:
 (i) a plurality of pin receiving cavities constructed for receiving and securely clamping the bone-mounted pins therein, 
 (ii) a clamping plate adapted to be movably mounted in the pins clamping and mounting member in cooperating relationship with the pin receiving cavity, 
 (iii) a wedge member adapted to be movably mounted in the pin clamping and mounting member and adapted to be controllably engaged with the clamping plate for controlling the movement thereof into engagement with the bone-mounted pins mounted in the pin receiving cavities; and 
 (iv) at least one rod adapted to be mounted to the pin clamping and mounting member so as to extend therefrom; 
   (b) at least one stabilizing rod adapted to be positioned in cooperating relationship with the pin clamping and mounting members, and   (c) clamp assemblies adapted to be securely mounted to the rods of the pin clamping and mounting member and the stabilizing rod for forming the desired securely engaged, external bone stabilizing frame assembly.   
     
     
         2 . A kit for assembly into an adjustable bone stabilizing frame comprising:
 (a) a plurality of pin clamping and mounting members constructed for being securely engaged with the bone-mounted pins and comprising at least one rod adapted to be mounted thereto and extending therefrom;   (b) at least one stabilizing rod positioned adapted to be mounted in cooperating relationship with the pin clamping and mounting members, and   (c) at least two clamp assemblies adapted to be positioned in a substantially stacked relationship with each clamping member comprising:
 (i) a pair of clamping members incorporating an integrated, generally C-shape and comprising:
 1. a clamping zone, 
 2. a first control plate and a second control plate adapted to be positioned in juxtaposed, spaced, cooperating, overlying relationship, interconnected to the clamping zone, incorporating axially aligned apertures and constructed for providing a controlled clamping force to the clamping zone, and 
 3. pivot means adapted to be interconnected to the control plates for cooperating therewith to provide the desired arcuate pivoting movement for controlling the clamping forces of the clamping zone; 
 
 (ii) control means adapted to be associated with the first and second clamping plates for providing the desired clamping forces thereto, and 
 (iii) a bushing adapted to be mounted in and extending between the control plates of adjacent clamping members, so as to maintaining the clamping members in stacked vertical relationship with each other, preventing angular shifting or tilting thereof.