# US 5,350,378 A · Posterior external pelvic fixator

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- Number: US 5,350,378 A
- Document ID: US5350378A
- Status: Granted
- Kind: A
- Application number: 08/064,589
- Filed: 1993-05-19
- Granted: 1994-09-27
- Earliest claimed: 1993-05-19
- Inventors: J. Dean Cole; Daniel F. Justin
- Web page: https://patentgrep.com/patent/US5350378A

## CPC

- A61B 17/6433: {specially adapted for use on body parts other than limbs, e.g. trunk or head}
- A61B 2017/00902: {transparent or translucent}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A pelvic fixation device and method for the initial stabilization and reduction of pelvic ring fractures, includes an adjustable radiolucent frame, first and second fixation pins connected to the frame in spaced relation relative to each other for fixing the frame to the posterior pelvis on opposite sides of the fracture, an adjustment mechanism for moving the first and second fixation pins relative to each other for stabilizing and reducing the pelvic fracture, and an adjustable spacer for adjusting the distance between the device and the patient.

## Claims

### Claim 1

A pelvic fixation device for stabilization and reduction of pelvic ring fractures of a patient, comprising:
a frame formed of a radiolucent material, the frame including first and second sections, each one having generally a U shape with a relatively straight connecting portion, each connecting portion having a back, and curving end portions, the sections being oriented so that the backs of the respective connecting portions face each other, and the end portions including a plurality of openings extending parallel to the connecting portion of the frame for providing adjustable placement of the fixation means;
first and second fixation means connected to the frame in spaced relation relative to each other for fixing the frame to the posterior pelvis on opposite sides of the fracture;
adjustment means for moving the first and second fixation means relative to each other for stabilizing and reducing the pelvic fracture; and
an adjustable spacing means for adjusting the distance between the frame and the patient.

### Claim 2

A pelvic fixation device for stabilization and reduction of pelvic ring fractures of a patient, comprising:
a frame formed of a radiolucent material, the frame having a first and a second section;
first and second fixation means connected to the frame in spaced relation relative to each other for fixing the frame to the posterior pelvis on opposite sides of the fracture;
adjustment means for moving the first and second fixation means relative to each other for stabilizing and reducing the pelvic fracture, the adjustment means including a drive screw means having right and left screw threads for moving the first and the second sections of the frame back and forth relative to each other; and
an adjustable spacing means for adjusting the distance between the frame and the patient.

### Claim 3

A pelvic fixation device for stabilization and reduction of pelvic ring fractures of a patient, comprising:
a frame formed of a radiolucent material, the frame having a first and a second section;
first and second fixation means connected to the frame in spaced relation relative to each other for fixing the frame to the posterior pelvis on opposite sides of the fracture;
adjustment means for moving the first and second fixation means relative to each other for stabilizing and reducing the pelvic fracture; and
adjustable spacing means, including an inflatable cushion, a pump, and a one-way valve for the inlet and outlet of air for providing spacing adjustment of a patient relative to the frame.

### Claim 4

A method of stabilizing and reducing pelvic ring fractures of a patient, comprising the steps of:
providing a pelvic fixation device comprising:
a frame formed of radiolucent material;
first and second fixation means connected to the frame in spaced relation relative to each other for fixing the frame to a posterior portion of a patient's pelvis on opposite sides of the pelvic ring fracture;
adjustment means for moving the first and second fixation means relative to each other; and
adjustable spacing means positioned upon the frame for adjusting the distance between the frame and the patient;
positioning the patient in a supine position on the adjustable spacing means and adjusting the spacing means to place the patient in a desired vertical position;
placing the first and the second fixation means into opposite sides of the posterior portion of the patient's pelvis;
adjusting the adjustment means to move the first and the second fixation means to stabilize and reduce the pelvic ring fracture; and
readjusting the adjustable spacing means to move the patient relative to the frame.