Distal reamer for use during an orthopaedic surgical procedure to implant a revision hip prosthesis

• US 10,064,725 B2
• Filed: 04/05/2012
• Issued: 09/04/2018
• Est. Priority Date: 04/06/2011
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: Carr, Jonathan E., Hood, Megan A., McCleary, Larry G., Fortin, Michael J.
• Primary Examiner(s): Ku, Si Ming
• Application Number:
  US13/440,406
• Publication Number:
  US 20120259338A1
• Time in Patent Office: 2,343 Days
• Field of Search: 606 79- 85
• CPC Class Codes: A61B 17/1637 Hollow drills or saws producing a curved cut, e.g. cylindrical A61B10/025, A61B17/1695 take precedence
• CPC Class Codes: A61B 17/164 intramedullary
• CPC Class Codes: A61B 17/1659 Surgical rasps, files, planes, or scrapers
• CPC Class Codes: A61B 17/1668 for the upper femur A61B17/164 takes precedence
• CPC Class Codes: A61B 2017/00464 for use with different instruments with hole for different instruments A61B2017/22072
• CPC Class Codes: A61B 2090/062 penetration depth
• CPC Class Codes: A61F 2/30734 Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect
• CPC Class Codes: A61F 2/36 Femoral heads ; Femoral endoprostheses
• CPC Class Codes: A61F 2/3662 Femoral shafts
• CPC Class Codes: A61F 2/4607 of hip femoral endoprostheses
• CPC Class Codes: A61F 2/4637 for connecting or disconnecting two parts of a prosthesis
• CPC Class Codes: A61F 2/4657 Measuring instruments used for implanting artificial joints for surgical instruments A61B90/06
• CPC Class Codes: A61F 2/4684 Trial or dummy prostheses
• CPC Class Codes: A61F 2002/30235 tubular, e.g. sleeves
• CPC Class Codes: A61F 2002/30332 Conically- or frustoconically-shaped protrusion and recess
• CPC Class Codes: A61F 2002/30507 using a threaded locking member, e.g. a locking screw or a set screw
• CPC Class Codes: A61F 2002/30515 using a locking wedge or block
• CPC Class Codes: A61F 2002/3054 about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions
• CPC Class Codes: A61F 2002/30616 Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/30617 Visible markings for adjusting, locating or measuring
• CPC Class Codes: A61F 2002/30738 : Sleeves
• CPC Class Codes: A61F 2002/3625 : Necks
• CPC Class Codes: A61F 2002/3652 : Connections of necks to shafts
• CPC Class Codes: A61F 2002/3674 : Connections of proximal parts to distal parts
• CPC Class Codes: A61F 2002/4622 : having the shape of a forceps or a clamp
• CPC Class Codes: A61F 2002/4627 : with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
• CPC Class Codes: A61F 2002/4629 : connected to the endoprosthesis or implant via a threaded connection
• CPC Class Codes: A61F 2002/4662 : for measuring penetration depth
• CPC Class Codes: A61F 2002/4668 : for measuring angles
• CPC Class Codes: A61F 2002/4681 : by applying mechanical shocks, e.g. by hammering

Abstract

Surgical instruments and methods for use in implanting a modular femoral prosthesis during performance of a hip revision procedure are disclosed, and include a distal reamer operable to ream an intramedullary canal of a patient'"'"'s femur during a surgical procedure. The distal reamer includes an elongated shank having a cutting head formed in a distal end of the elongated shank and a drive connector formed in a sidewall positioned at an opposite, proximal end of the elongated shank. The cutting head has a plurality of helical cutting flutes arranged in a geometry that corresponds with the geometry of the distal stem component. The drive connector has a female drive socket and a number of locking slots formed in the sidewall so as to open into the female drive socket.

Claims

1. A distal reamer operable to ream an intramedullary canal of a patient'"'"'s femur during a surgical procedure to implant a distal stem component of a modular orthopaedic hip prosthesis, comprising:

an elongated shank having (i) a cutting head formed in a distal end of the elongated shank, the cutting head having a plurality of helical cutting flutes arranged in a geometry that corresponds with the geometry of the distal stem component, and (ii) a drive connector formed in a sidewall positioned at an opposite, proximal end of the elongated shank, the drive connector having (a) a female drive socket extending inwardly from a superior surface of the elongated shank, and (b) a number of locking slots formed in the sidewall so as to open into the female drive socket, each locking slot extending inferiorly from an opening defined in the superior surface of the elongated shank.

2. The distal reamer of claim 1, wherein the locking slots comprise L-shaped locking slots.

3. The distal reamer of claim 1, wherein the locking slots are formed in the sidewall on opposite sides of the female drive socket.

4. The distal reamer of claim 1, wherein the female drive socket comprises a female hex drive socket.

5. A distal reamer operable to ream an intramedullary canal of a patient'"'"'s femur during a surgical procedure to implant a distal stem component of a modular orthopaedic hip prosthesis, comprising:

a cutting head having a plurality of helical cutting flutes arranged in a geometry that corresponds with the geometry of the distal stem component,

a female drive socket, and

a threaded bore having a superior end that opens into the drive socket and extending inferiorly away therefrom,

further comprises a number of locking slots arranged around, and opening into, the female drive socket.

6. The distal reamer of claim 5, wherein the locking slots comprise L-shaped locking slots.

7. The distal reamer of claim 5, wherein the locking slots are formed in a sidewall on opposite sides of the female drive socket.

8. The distal reamer of claim 5, wherein the female drive socket comprises a female hex drive socket.