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US 8,262,656 B2Granted
External fixation device for fractures
AssigneeA.M. Surgical, Inc.
InventorsAther Mirza, Romi Mirza
Life of this patent
Estimating the term…
Abstract
An external fixation device for the setting and corrective treatment of bone fractures is disclosed. The device comprises a splint member having a first and a second axially slidable and mutually fastenable base portions for adjusting the length of the splint member and a plurality of bone pins. Each of the base portions of the splint member includes mountings for the bone pins to traverse the site of the bone fracture in a multi-angle and multi-planar pin configuration, so as to permit direct fixation of the fracture and provide a significant degree of stability.
Claims34
An external fixation device for the setting and corrective treatment of a bone fracture, comprising:
- a splint member having a first and a second axially slidable and mutually fastenable base portions for adjusting the length of said splint member, said base portions each being rectangular in transverse cross-section so as to inhibit relative rotational displacement between said base portions while enabling axial adjustment therebetween,
- wherein said first and second base portions of said splint member are each elongate bars which are axially slidably interconnected so as to extend along a common axis;
- and fastening structure being provided on one of said base portions for locking said other base portion thereto in predetermined axially adjusted positions,
- said splint member further having axially extending grooves and cooperating lips formed extending along least a portion of the lengths of each of said base portions to facilitate adjustment of the axial length of said splint member and resulting spacing between the sets of pins between said base portions;
- and
- a plurality of bone pins, wherein said bone pins pass through holes in each base portion of the splint member,
- wherein each of said base portions of said splint member comprises mountings for said bone pins to traverse the site of the bone fracture in a multi-angle and multi-planar configuration so as to secure fractured bone segments against rotation and axial movement, and
- further wherein positioning spacers are detachably mounted on the outer ends of said base portions to facilitate the radial spacing of said device relative to the forearm of a patient during the deployment of the splint member for fixation of the fracture site, wherein said positioning spacers are arranged so as to be mounted on grooves formed in lower side edges of each said based portion, and are axially slidably detachable upon completion of the deployment of said splint member proximate said fracture site, and
- wherein said splint member comprises a fiber reinforced polymeric material.
6 more elements
An external fixation device for the setting and corrective treatment of a bone fracture, comprising:
- a splint member having a first and a second axially slidable and mutually fastenable base portions for adjusting the length of said splint member;
- and
- a plurality of bone pins, wherein said bone pins pass through holes in each base portion of the splint member, wherein the base portions comprise transverse side apertures for elements for locking the pins into position in the base portions upon the insertion of the pins into the bone of the patient,
- further wherein each of said base portions of said splint member comprises mountings for said bone pins to traverse the site of the bone fracture in a mutually crossing and intersecting pin arrangements so as to secure fractured bone segments against rotation and axial movement, and
- wherein said splint member is made from carbon fiber reinforced plastic with a minimal tensile strength equal to or greater than 30 Ksi.
2 more elements
An external fixation device for the setting and corrective treatment of a bone fracture, comprising:
- a splint member having a first and a second axially slidable and mutually fastenable base portions for adjusting the length of said splint member;
- and
- a plurality of bone pins, wherein said bone pins pass through holes in each base portion of the splint member, wherein the base portions comprise transverse side apertures for elements for locking the pins into position in the base portions upon the insertion of the pins into the bone of the patient,
- further wherein each of said base portions of said splint member comprises mountings for said bone pins to traverse the site of the bone fracture in a mutually crossing and intersecting pin arrangements so as to secure fractured bone segments against rotation and axial movement, and
- wherein said splint member is made from a high strength material.
2 more elements
An external fixation device for the setting and corrective treatment of a bone fracture in a patient, comprising:
- a splint member having a first and a second axially slidable and mutually fastenable base portions for adjusting the length of said splint member;
- and
- a plurality of bone pins, wherein said bone pins pass through holes in each base portion of the splint member,
- wherein the base portions comprise transverse side apertures for elements for locking the pins into position in the base portions upon the insertion of the pins into the bone of the patient,
- further wherein each of said base portions of said splint member comprises mountings for said bone pins to traverse the site of the bone fracture in a multi-angle and multi-planar configuration so as to secure fractured bone segments against rotation and axial movement, and
- wherein said splint member comprises a fiber reinforced polymeric material.
3 more elements
Dependencies are inferred from the claim text.