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US 2020/0345395 A1Published application
Device and Method for Treating Osteonecrosis
AssigneeTexas Scottish Rite Hospital for Children
InventorHarry K.W. Kim
Life of this patent
Estimating the term…
Abstract
The present invention includes a method and devices for treating osteonecrosis in, e.g., children, adolescents, and adults comprising: identifying a subject in need of treatment for osteonecrosis; drilling two or more holes into a bone in need of treatment for osteonecrosis; inserting two or more needles or cannulas into the holes in the bone; washing an interior of the bone with a washing fluid introduced through one or more of the needles or cannulas inserted into the bone; and after washing the interior of the bone introducing one or more bone growth promoting materials or cells into the bone.
Claims17
A surgical instrument comprising:
- a handle;
- a central stationary assembly coupled to the handle, comprising a first guide cannula, a clamping mechanism, a first depth adjustment, and a first protractor arm component;
- a first needle assembly disposed to be inserted into the first guide cannula and comprising a first needle assembly cannula, a first drilling assembly disposed to be inserted in the first needle cannula assembly, and a first locking mechanism disposed to engage the first drill assembly;
- an adjustable subassembly disposed to be rotatably coupled to the central stationary assembly and comprising a second guide cannula disposed to engage the clamping mechanism, a second depth adjustment, and a second protractor arm component disposed to slidably engage the first protractor arm component;
- and
- a second needle assembly disposed to be inserted into the second guide cannula and comprising a second needle assembly cannula, a second drilling assembly disposed to be inserted in the second needle assembly cannula, and a second locking mechanism disposed to engage the second drilling assembly.
3 more elements
A method of treating an osteonecrosis comprising:
- identifying a subject in need of treatment for osteonecrosis;
- positioning a needle targeting guide to drill a first hole into a bone in need of treatment for osteonecrosis, the needle targeting device comprising a first needle assembly, wherein the first needle assembly comprises a removable first drilling assembly, a second needle assembly, wherein the second needle assembly comprises a second removable drilling assembly;
- drilling the first hole in the bone with the first drilling assembly of the first needle assembly;
- positioning the needle targeting guide to drill a second hole in the bone, by rotating the needle targeting guide about a longitudinal axis of the first needle assembly or by adjusting a position of a tip of the second needle assembly relative to a position of a tip of the second needle assembly;
- drilling the second hole with the second needle assembly;
- withdrawing the drill assembly from the first needle assembly or from the second needle assembly;
- and
- washing an interior of the bone with a washing fluid introduced through the first needle assembly or through the second needle assembly.
5 more elements
A surgical instrument comprising:
- a frame with one or more locking pins disposed within the frame, wherein the frame is configured to receive a first guide cannula and a second guide cannula;
- a first guide cannula and a second guide cannula, wherein the first guide cannula and the second guide cannula are disposed to be inserted into the frame and locked into place with the one or more locking pins;
- a first needle assembly disposed to be inserted into the first guide cannula and comprising a first needle assembly cannula, a first drilling assembly disposed to be inserted in the first needle cannula assembly, and a first locking mechanism disposed to engage the first drill assembly;
- and
- a second needle assembly disposed to be inserted into the second guide cannula and comprising a second needle assembly cannula, a second drilling assembly disposed to be inserted in the second needle assembly cannula, and a second locking mechanism disposed to engage the second drilling assembly.
2 more elements
A method of treating an osteonecrosis comprising:
- identifying a subject in need of treatment for osteonecrosis;
- positioning a first guide cannula;
- positioning a first needle assembly with the first guide cannula to drill a first hole into a bone in need of treatment for osteonecrosis, wherein the first needle assembly comprises a removable first drilling assembly;
- drilling the first hole in the bone with the first drilling assembly of the first needle assembly;
- securing a needle targeting guide to the first guide cannula;
- securing a second guide canula to the needle targeting guide;
- positioning the second guide cannula using the needle targeting guide;
- positioning a second needle assembly with the second guide cannula to drill a second hole into the bone, wherein the second needle assembly comprises a second removable drilling assembly;
- drilling the second hole in the bone with the second drilling assembly of the second needle assembly;
- withdrawing the drill assembly from the first needle assembly or from the second needle assembly;
- and
- washing an interior of the bone with a washing fluid introduced through the first needle assembly or through the second needle assembly.
9 more elements
Dependencies are inferred from the claim text.