Devices, systems, and methods for locating a position in a body

An angle of insertion device, the device comprising:

• a first body portion having a longitudinal axis;
• a protractor body portion coupled to the first body portion;
• a first set of markers disposed on the first body portion for measuring along the longitudinal axis, the first set of markers comprising at least two radiopaque markers;
• and
• a set of protractor markers disposed on the protractor body portion for measuring an angle relative to the longitudinal axis, the set of protractor markers comprising at least two radiopaque markers.

A system for locating a position in a body, the system comprising:

• a first device for locating a position in a body, the first device comprising:
• a first body portion of the first device having a first longitudinal axis,
• a second body portion of the first device slidably coupled to the first body portion of the first device, the second body portion of the first device having a second longitudinal axis,
• a first set of markers of the first device disposed on the first body portion of the first device for measuring along the first longitudinal axis, the first set of markers of the first device comprising at least two radiopaque markers of the first device, and
• a second set of markers of the first device disposed on the second body portion of the first device for measuring along the second longitudinal axis, the second set of markers of the first device comprising at least two radiopaque markers of the first device,
• wherein:
• the first body portion of the first device is slidable along the second longitudinal axis, and
• the second body portion of the first device is slidable along the first longitudinal axis;
• a second device for determining an angle of insertion, the second device comprising:
• a first body portion of the second device having a longitudinal axis;
• a protractor body portion coupled to the first body portion of the second device;
• a first set of markers of the second device disposed on the first body portion of the second device for measuring along the longitudinal axis, the first set of markers of the second device comprising at least two radiopaque markers of the second device;
• and
• a set of protractor markers disposed on the protractor body portion for measuring an angle relative to the longitudinal axis, the set of protractor markers comprising at least two radiopaque markers;
• and
• a belt for being disposed around a waist and/or hips of a person, the belt comprising:
• a dorsal belt portion for being disposed adjacent a sagittal plane on a dorsal side of the person, the dorsal belt portion including a first coupler for coupling the first device for locating a position in a body to the belt,
• a side belt portion for being disposed adjacent a coronal plane of the person, the side belt portion including a second coupler for coupling the second device for determining an angle of insertion device to the belt.