Bone harvesting system

Patent metadata

Field	Value
Publication number	US-12569261-B2
Application number	US-202318240454-A
Country	US
Kind code	B2
Filing date	Aug 31, 2023
Priority date	Sep 27, 2018
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

Bone harvesting system including methods and devices for obtaining and/or removing osseous debris from a bone using an auger having a flexible, helical fin projecting from a shaft. In an exemplary method, a leading end region of the auger is placed into a reamed portion of a bone's medullary cavity via an entry site extending into the bone. Osseous debris is driven toward the entry site with the auger. At least a portion of the osseous debris that has passed through the entry site is collected outside the bone. In some embodiments, the leading end region of the auger is deformed by contact between the helical fin and a wall of the medullary cavity, to conform the helical fin in the leading end region to a portion of the medullary cavity.

First claim

We claim:

1 . A bone harvesting device comprising:
a housing; and an auger including a flexible shaft and a flexible helical fin extending from the flexible shaft, the flexible shaft having a distal region opposite a proximal region, wherein the proximal region of the auger includes a drive region configured to engage with a drive instrument for rotating the auger and the distal region of the auger includes the flexible helical fin, wherein an outer diameter of the flexible helical fin in a leading end region of the flexible shaft is greater than an outer diameter of the flexible helical fin in a region of the flexible shaft proximally adjacent the leading end region, wherein each the flexible shaft and the flexible helical fin are elastically deformable, and wherein the housing encloses a portion of the auger.

2 . The bone harvesting device of claim 1 , wherein the outer diameter of the flexible helical fin in the leading end region is uniform.

3 . The bone harvesting device of claim 1 , wherein the outer diameter of the flexible helical fin in the region of the flexible shaft proximally adjacent the leading end region is uniform.

4 . The bone harvesting device of claim 1 , wherein the flexible helical fin comprises a proximal or distal slant in the leading end region of the flexible shaft.

5 . The bone harvesting device of 4 , wherein the helical fin is configured to preferentially deform in a direction of the slant, relative to an opposite direction.

6 . The bone harvesting device of claim 1 , wherein the flexible helical fin extends from the flexible shaft along an axis of projection, wherein the axis of projection of at least a portion of the flexible helical fin forms an angle with the flexible shaft of less than ninety degrees.

7 . The bone harvesting device of claim 1 , wherein at least a portion of the flexible helical fin is tapered such that a width of the flexible helical fin is greater at the flexible shaft than at a crest of the flexible helical fin.

8 . The bone harvesting device of claim 1 , wherein the flexible helical fin and at least a portion of the flexible shaft are formed integrally with one another.

9 . The bone harvesting device of claim 1 , wherein at least a portion of the shaft is tubular.

10 . The bone harvesting device of claim 1 , wherein the flexible shaft includes a flexible sheath surrounding a flexible rod, and wherein the flexible helical fin extends from the flexible sheath.

11 . The bone harvesting device of claim 10 , wherein the flexible rod is hollow.

12 . The bone harvesting device of claim 11 , wherein the flexible rod is solid.

13 . The bone harvesting device of claim 1 , wherein the housing comprises on or more ports for entry and/or exit of fluid.

14 . A bone harvesting device comprising:
an auger including a flexible shaft and a flexible helical fin extending from the flexible shaft, the flexible shaft having a distal region opposite a proximal region, wherein an outer diameter of the flexible helical fin in a leading end region of the flexible shaft is greater than an outer diameter of the flexible helical fin in a region of the flexible shaft proximally adjacent the leading end region, and wherein each the flexible shaft and the flexible helical fin are elastically deformable.

15 . The bone harvesting device of claim 14 , wherein the outer diameter of the flexible helical fin in the leading end region is uniform.

16 . The bone harvesting device of claim 15 , wherein the flexible helical fin comprises a proximal or distal slant in the leading end region of the flexible shaft, wherein the helical fin is configured to preferentially deform in a direction of the slant, relative to an opposite direction.

17 . The bone harvesting device of claim 14 , wherein the outer diameter of the flexible helical fin in the region of the flexible shaft proximally adjacent the leading end region is uniform.

18 . The bone harvesting device of claim 14 , wherein the flexible helical fin and at least a portion of the flexible shaft are formed integrally with one another.

19 . The bone harvesting device of claim 14 , wherein the flexible shaft includes a flexible sheath surrounding a flexible rod, and wherein the flexible helical fin extends from the flexible sheath.

Assignees

• Acumed Llc

Inventors

• Seykora Andrew William
• Ehmke Larry W
• Norris Brent Lane

Classifications

• A61B17/1633 Primary

  Sleeves, i.e. non-rotating parts surrounding the bit shaft, e.g. the sleeve forming a single unit with the bit shaft (A61B17/1644 takes precedence) · CPC title

• A61B2017/320064

  with tissue or sample retaining means · CPC title

• A61B2017/00862

  elastic or resilient · CPC title

• A61B2217/005

  with suction drainage system · CPC title

• A61B17/1615

  Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material · CPC title