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US 2021/0068979 A1Published application
System and Method for Total Hip Arthroplasty
AssigneeiHip Surgical, LLC
InventorsAnatol Podolsky, Yuri Garbuzov
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Abstract
Systems and methods for placement of both the prosthetic acetabular cup and the prosthetic femoral head which takes account of the patient's particular anatomy, with inter-operative testing of the patient's body to find an optimum positioning (angles) for the components. The system allows a procedure with less pre-operative and inter-operative imaging, providing for reduced radiation exposure for doctors and patients.
Claims14
A system for aligning a prosthetic acetabular cup (10) in a pelvis (2) of a patient, said system comprising:
- a trial cup (6), configured to fit into a reamed acetabulum (3) in the pelvis (2) of the patient;
- a trial femoral head (7), trial neck (8) and trial stem (9), said trial neck having a long axis;
- a jig (14) comprising a fixation element (15), a first rotatable and lockable joint (17), a first connecting rod (19) connecting said fixation element (15) to a second rotatable and lockable joint (18), a second connecting rod (22) connecting said second rotatable and lockable joint (18) to a third rotatable and lockable joint (20) and an aiming clamp (21);
- a handle assembly (23) comprising a handle portion (25) characterized by a proximal end and a distal end, and an alignment shaft (24) disposed on the proximal end of the handle portion (25), and a releasable coupling (26) on the distal end, said releasable coupling configured for releasably coupling to the trial stem (9);
- said alignment shaft (24) characterized by a long axis, said handle portion configured to hold said alignment shaft (24) with the long axis of the alignment shaft (24) coaxial with a long axis of the trial neck (8);
- wherein the fixation element (15) is configured for temporary non-translating fixation to the pelvis;
- the aiming clamp (21) is configured for temporary fixation to the alignment shaft (24);
- wherein the trial stem (9) is configured for temporary non-translating fixation within a femur 5 of the patient;
- and
- wherein the first rotatable and lockable joint 17, the second rotatable and lockable joint 18, and the third rotatable and lockable joint 20 and aiming clamp 21, are operable to be manipulated, upon manipulation of the femur 5, to a position corresponding to a desired orientation of the trial cup and the prosthetic acetabular cup (10), and operable to be fixed in a fixed position, said fixed position being a position corresponding to a desired orientation of the trial cup and the prosthetic acetabular cup (10).
7 more elements
A system for aligning and installing a prosthetic acetabular cup (10) in a pelvis (2) of a patient, said system comprising:
- a trial cup (6), configured to fit into a reamed acetabulum (3) in the pelvis (2) of the patient, said trial cup (6) configured for rotation within the reamed acetabulum (3);
- trial components including a trial femoral head (7), trial neck (8) and trial stem (9), said trial neck having a trial neck axis (27);
- a jig (14) comprising a fixation element (15) and an aiming clamp (21);
- handle means for releasably connecting the aiming clamp (21) to the trial components, said handle means comprising an alignment shaft (24) configured for releasable fixation to the aiming clamp (21);
- said jig (14) further comprising means for connecting the fixation element to the aiming clamp (21), with the aiming clamp (21) fixed to the trial components through the handle means, allowing manipulation of the trial components relative to the fixation element and trial cup and thereafter rigidly locking the jig (14) in a shape after manipulation to rigidly fix the alignment shaft in alignment with the neck axis (27);
- and
- an inserter (41) characterized by an inserter axis (45), said inserter (41) configured for fixation within the aiming clamp (21), such that inserter is rigidly fixed within the alignment clamp with the inserter axis (45) aligned with the neck axis (27), such that, upon removal of the alignment shaft (24) from the aiming clamp (21), the inserter may be fixed to the aiming clamp (21) such that the inserter axis is aligned on neck axis (27).
4 more elements
A method of performing total hip arthroplasty on a pelvis (2) and femur (5) of a patient, said method comprising:
- installing a trial cup (6) in a reamed acetabulum (3) in the pelvis (2) of the patient, such that said trial cup is rotatable within the reamed acetabulum (3);
- temporarily installing trial components including a trial head (7) and trial neck in the femur 5;
- and
- manipulating the femur 5 with the installed trial components through a range of movement, with the trial head (7) disposed within the trial cup (6), as necessary to impact a rim of the trial cup (6) with the trial head (7) and rotate the trial cup within the reamed acetabulum (3) and position the trial cup in a stable position.
1 more element
Dependencies are inferred from the claim text.