Portable cervical traction device
First Claim
1. A cervical traction device comprising:
- a support structure having a track;
a carriage having a slide bracket slidable along a portion of the track;
a restraining mechanism adapted to releasably restrain a portion of a patient'"'"'s body to the carriage;
a pneumatic cylinder having a first end and a moveable piston rod at a second end, one of the ends of the pneumatic cylinder attached to a support structure and the other end attached to the carriage, the pneumatic cylinder adapted to move the carriage along the track relative to the support structure when in a pressurized state, the pneumatic cylinder maintaining a generally static traction force for a period in excess of 10 minutes when in the pressurized state without additional pressurized air being supplied; and
a hand pump fluidly connected to the pneumatic cylinder and adapted to inject pressurized air into the pneumatic cylinder, the hand pump having a handle moveable relative to a body portion to injecting at least 138 kPa (20 psi) of pressure into the pneumatic cylinder.
10 Assignments
0 Petitions
Accused Products
Abstract
A portable traction device suitable for cervical traction powered by a pneumatic cylinder. The portable traction device includes a support structure having a longitudinal axis and a carriage slidable along a portion of the support structure parallel to the longitudinal axis. The carriage including restraining mechanism for releasably restraining a portion of a patient'"'"'s body to the carriage. A pneumatic cylinder includes a cylinder housing attached to the support structure. The cylinder housing contains a piston and piston rod. The piston rod is attached to the carriage for moving the carriage along the longitudinal axis relative to the support structure when pressurized air is injected into the pneumatic cylinder. The piston has at least one pressure activated seal extending circumferentially around the piston for engagement with an inside surface of the cylinder housing. A bicycle-style hand pump fluidly connected to the pneumatic cylinder is provided for injecting pressurized air into the cylinder.
43 Citations
16 Claims
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1. A cervical traction device comprising:
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a support structure having a track;
a carriage having a slide bracket slidable along a portion of the track;
a restraining mechanism adapted to releasably restrain a portion of a patient'"'"'s body to the carriage;
a pneumatic cylinder having a first end and a moveable piston rod at a second end, one of the ends of the pneumatic cylinder attached to a support structure and the other end attached to the carriage, the pneumatic cylinder adapted to move the carriage along the track relative to the support structure when in a pressurized state, the pneumatic cylinder maintaining a generally static traction force for a period in excess of 10 minutes when in the pressurized state without additional pressurized air being supplied; and
a hand pump fluidly connected to the pneumatic cylinder and adapted to inject pressurized air into the pneumatic cylinder, the hand pump having a handle moveable relative to a body portion to injecting at least 138 kPa (20 psi) of pressure into the pneumatic cylinder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A cervical traction device comprising:
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a support structure having a track;
a carriage having a slide bracket slidable along a portion of the track;
a pair of opposing neck supports adjustably attached to the carriage to permit adjustment of the lateral separation therebetween;
a pneumatic cylinder having a first end and a moveable piston rod at a second end, one of the ends of the pneumatic cylinder attached to a support structure and the other end attached to the carriage, the pneumatic cylinder adapted to move the carriage along the track relative to the support structure when in a pressurized state;
at least one pressure activated seal in the pneumatic cylinder extending circumferentially around a piston, the pressure activated seal movable between a relaxed position and an extended position so the pressure activated seal engages an internal surface on the pneumatic cylinder when the pneumatic cylinder is in the pressurized state for engagement with an inside surface of a cylinder housing when in the pressurized state, the pneumatic cylinder maintaining a generally static traction force for a period in excess of 10 minutes when in the pressurized state without additional pressurized air being supplied; and
a hand pump fluidly connected to the pneumatic cylinder and adapted to inject pressurized air into the pneumatic cylinder, the hand pump having a handle moveable relative to a body portion to injecting at least 138 kPa (20 psi) of pressure into the pneumatic cylinder.
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16. A system comprising a pneumatic traction force generating apparatus and a portable cervical traction device, the portable cervical traction device having a carriage with a slide bracket slidable along a portion of a track on a support structure, the pneumatic traction force generating apparatus comprising a pneumatic cylinder attachable to the support structure for moving the carriage relative to the support structure when the pneumatic cylinder is in a pressurized state, the pneumatic cylinder having at least one pressure activated seal extending circumferentially around a piston, the pressure activated seal movable between a relaxed position and an extended position so the pressure activated seal engages an internal surface on the pneumatic cylinder when the pneumatic cylinder is in the pressurized state, the pneumatic cylinder maintaining a generally static traction force for a period in excess of 10 minutes when in the pressurized state without additional pressurized air being supplied.
Specification