Graft filter with locking graft filter element and graft extractor

Patent metadata

Field	Value
Publication number	US-11617588-B2
Application number	US-202117164968-A
Country	US
Kind code	B2
Filing date	Feb 2, 2021
Priority date	Feb 14, 2018
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

A device for collecting a bone graft material comprises a canister extending defining a filter-receiving space therein, the canister including a connection for connecting to a vacuum source, a proximal end of the canister including a first locking feature and a filter element sized and shaped to be received within the filter-receiving space of the canister, the filter element including a channel extending therethrough, the channel defined via a mesh material and a proximal end of the filter element including a second locking feature releasably engageable with the first locking feature of the canister via a rotation of the filter element about a longitudinal axis thereof relative to the canister in combination with an extractor sized and shaped to be received within the channel of the filter element, the extractor defining a graft material receiving space therein and being releasably engageable with the extractor.

First claim

What is claimed is:

1. A method for collecting bone graft material within a graft filter assembly, comprising:
assembling the graft filter assembly by inserting a filter element within a filter-receiving space of a canister, inserting an extractor within a channel of the filter element and locking the canister, filter element and the extractor relative to one another by rotating the filter element and extractor relative to the canister about a longitudinal axis of the assembly;
connecting a proximal end of the canister to a reamer device and a distal end of the canister to an aspiration hose;
reaming a medullary canal of a bone using the reamer device and providing irrigation fluid thereto; and
applying a vacuum force through the graft filter assembly via the aspiration hose to suction reamed graft material into a graft material collecting space of the extractor and filter fluid from the reamed graft material collected in the graft material collecting space via pores of a mesh material of the filter element so that only a desired graft material remains within the extractor,
wherein inserting the extractor into the channel of the filter element includes aligning a detent of the extractor with a cut-out of the filter element, the detent extending radially outward from a proximal end of the extractor, and the cut-out extending through a proximal end of the filter element and defining a first hook and a second hook, the detent being sized and shaped to be distally receivable within the cut-out.

2. The method of claim 1 , wherein fluid suctioned from the reamed graft material via the filter element is drawn into a space between an interior of the canister and an exterior of the filter element and suctioned out of the graft filter assembly via the aspiration hose.

3. The method of claim 1 , wherein inserting the filter element into the canister includes aligning a protrusion of the canister with a groove of the filter element, the protrusion extending radially inward from a proximal end of the canister into the filter-receiving space of the canister, the groove extending radially into a portion of a lip extending radially outward from a proximal end of the filter element, the groove being sized and shaped to correspond to the protrusion.

4. The method of claim 3 , wherein locking the canister, filter element and extractor relative to one another includes rotating the extractor relative to the filter element in a first direction so that the detent engages the first hook and continued rotation of the extractor in the first direction rotates the filter element relative to the canister so that the protrusion of the canister engages a proximal surface of the lip.

5. The method of claim 4 , wherein the lip of the filter element includes a stop protruding from the proximal surface thereof, the stop preventing further rotation of the filter element relative to the canister in the first direction so that the groove does not become realigned with the protrusion.

6. The method of claim 4 , further comprising removing the desired graft material from the extractor by disassembling the graft filter assembly.

7. The method of claim 6 , wherein disassembling the graft filter assembly includes rotating the extractor relative to the filter element in a second direction opposite the first direction so that the detent disengages the first hook and engages the second hook so that continued rotation of the extractor in the second direction rotates the filter element relative to the canister until the groove is aligned with the protrusion.

8. The method of claim 7 , wherein disassembling the graft filter assembly further includes removing the filter element and extractor.

9. The method of claim 7 , wherein disassembling the graft filter assembly includes rotating the extractor relative to the filter element in the first direction until the detent is disengaged from the second hook and the extractor is removable from the filter.

10. A method for collecting bone graft material within a graft filter assembly, comprising:
assembling the graft filter assembly by inserting a filter element within a filter-receiving space of a canister, wherein the filter element includes a cut-out at a proximal end of the filter element, the cut-out defining a first hook and a second hook, the first and second hooks facing opposite directions;
inserting an extractor within a channel of the filter element, wherein:
the extractor includes a detent extending radially outward from a proximal end of the extractor, and
inserting the extractor causes the detent to be distally received within the cut-out;

locking the canister, filter element and the extractor relative to one another by rotating the extractor relative to the canister about a longitudinal axis of the graft filter assembly, wherein rotating the extractor in a first direction causes the detent to engage the first hook, and rotating the extractor in a second direction causes the detent to engage the second hook;
connecting a proximal end of the canister to a reamer device and a distal end of the canister to an aspiration hose;
reaming a medullary canal of a bone using the reamer device and providing irrigation fluid thereto; and
applying a vacuum force through the graft filter assembly via the aspiration hose to suction reamed graft material into a graft material collecting space of the extractor and filter fluid from the reamed graft material collected in the graft material collecting space via pores of a mesh material of the filter element so that only a desired graft material remains within the extractor.

11. The method of claim 10 , wherein fluid filtered from the reamed graft material via the filter element is drawn into a space between an interior of the canister and an exterior of the filter element and suctioned out of the graft filter assembly via the aspiration hose.

12. The method of claim 10 , wherein inserting the filter element within the filter-receiving space of the canister includes aligning a protrusion of the canister with a groove of the filter element, the protrusion extending radially inward from a proximal end of the canister into the filter-receiving space of the canister, the groove extending radially into a portion of a lip extending radially outward from a proximal end of the filter element, the groove being sized and shaped to correspond to the protrusion.

13. The method of claim 12 , wherein the lip of the filter element includes a stop protruding from the proximal surface thereof, the stop preventing further rotation of the filter element relative to the canister in the first direction so that the groove does not become realigned with the protrusion.

14. The method of claim 10 , further comprising removing the desired graft material from the extractor by disassembling the graft filter assembly.

15. The method of claim 14 , wherein:
assembling the graft filter assembly includes rotating the extractor relative to the filter element in the first direction so that the detent engages the first hook; and
disassembling the graft filter assembly includes rotating the extractor relative to the filter element in the second direction so that the detent disengages the first hook.

16. The method of claim 15 , wherein disassembling the graft filter assembly further includes removing the filter element and extractor.

Assignees

• Depuy Synthes Products Inc

Inventors

• Kiersh Jeff
• Lehmicke Michael
• Shane Christopher
• Hamel Ross
• D'Andrea Dominic

Classifications

• A61B2217/007

  with irrigation system · CPC title

• A61B17/8833

  Osteosynthesis tools specially adapted for handling bone cement or fluid fillers; Means for supplying bone cement or fluid fillers to introducing tools, e.g. cartridge handling means · CPC title

• A61B2217/005

  with suction drainage system · CPC title

• A61B17/1635 Primary

  for grafts, harvesting or transplants · CPC title

• A61M1/79

  Filters for solid matter (specially adapted for dental use A61C17/065) · CPC title