SYSTEM, METHOD AND TOOL FOR ENSURING CORRECT INSERTION OF AN ARTIFICIAL HIP JOINT
First Claim
1. A system for ensuring correct insertion and spatial orientation of a prosthesis cup and/or a prosthesis stem of an artificial hip joint, the system comprising:
- a) a tool for controlling the mutual positioning of the main components in a hip prosthesis;
b) a measuring device, for measuring the distance between two supports connected to the patient'"'"'s pelvis and leg, comprising;
an elongated main body;
a first arm and a second arm, wherein said first and second arm is connected to said elongated main body and at least one of said first and second arm is displaceable along said main body along a first plane, and at least one of said first and second arm is repositionable with regard to said main body along a second plane substantially orthogonal to said first plane, wherein the relation between said first and second plane anteriorly or posteriorly may be shifted along said second plane of the measuring device; and
connection members arranged at one of the ends of said first and second arm, where said connection members are adapted to interact with receptors at said supports.
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Accused Products
Abstract
The present invention relates to the area of orthopaedic surgery, and in particular to a system for ensuring that prosthesis components or parts thereof are inserted correctly upon implantation of artificial hip joints and to methods for ensuring correct insertion of the parts of an artificial hip joint or femoral prosthesis during surgery. This system comprises a tool (30) for controlling the mutual positioning of the main components in a hip prosthesis, a measuring device (40), for measuring the distance between two supports connected to the patient'"'"'s pelvis and leg, and connection members (46, 47) arranged at said measuring device, where said connection members are adapted to interact with receptors at said supports.
44 Citations
22 Claims
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1. A system for ensuring correct insertion and spatial orientation of a prosthesis cup and/or a prosthesis stem of an artificial hip joint, the system comprising:
- a) a tool for controlling the mutual positioning of the main components in a hip prosthesis;
b) a measuring device, for measuring the distance between two supports connected to the patient'"'"'s pelvis and leg, comprising;
an elongated main body;
a first arm and a second arm, wherein said first and second arm is connected to said elongated main body and at least one of said first and second arm is displaceable along said main body along a first plane, and at least one of said first and second arm is repositionable with regard to said main body along a second plane substantially orthogonal to said first plane, wherein the relation between said first and second plane anteriorly or posteriorly may be shifted along said second plane of the measuring device; and
connection members arranged at one of the ends of said first and second arm, where said connection members are adapted to interact with receptors at said supports. - View Dependent Claims (2, 3, 4, 5, 6, 7, 19, 20, 21)
- a) a tool for controlling the mutual positioning of the main components in a hip prosthesis;
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8. A measuring device for measuring the distance between two supports for use during surgical procedures, where said supports are connected to bones in the patient'"'"'s body, wherein the measuring device comprises an elongated main body;
- a first arm and a second arm, wherein said first and second arm is connected to said elongated main body and at least one of said first and second arm is displaceable along said main body along a first plane, and at least one of said first and second arm is repositionable with regard to said main body along a second plane substantially orthogonal to said first plane, wherein the relation between said first and second plane anteriorly or posteriorly may be shifted along said second plane of the measuring device;
connection members arranged at one of the ends of said first and second arm, where said connection members are adapted to interact with receptors at the supports. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- a first arm and a second arm, wherein said first and second arm is connected to said elongated main body and at least one of said first and second arm is displaceable along said main body along a first plane, and at least one of said first and second arm is repositionable with regard to said main body along a second plane substantially orthogonal to said first plane, wherein the relation between said first and second plane anteriorly or posteriorly may be shifted along said second plane of the measuring device;
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22. A tool for measuring distances between components in a surgical method, the tool comprising:
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an elongate main body; two attachment members projecting from the main body, at least one of which is slideably movable along the length of the main body; wherein the attachment members are connected to the main body so as not to be rotatable about the axis of the main body, and the attachment members can each be removably attached to a respective component for measuring the distance between the components.
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Specification