MODULAR ORTHOPAEDIC COMPONENT CASE

• US 20080021567A1
• Filed: 12/27/2006
• Published: 01/24/2008
• Est. Priority Date: 07/18/2006
• Status: Abandoned Application

• Current Assignee: Zimmer Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Zimmer Technology Incorporated (Zimmer Biomet Holdings, Inc.)
• Inventors: Schlotterback, Ryan D., Meulink, Steven L., Banerjee, Barish, Vankoski, Stephen J.
• Application Number:
  US11/616,369
• Publication Number:
  US 20080021567A1
• Time in Patent Office: Days
• US Class Current: 623/22.12
• CPC Class Codes: A61B 2050/3008 having multiple compartments
• CPC Class Codes: A61B 5/107 Measuring physical dimensions, e.g. size of the entire body or parts thereof
• CPC Class Codes: A61B 5/4528 Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 50/30 Containers specially adapted for packaging, protecting, dispensing, collecting or disposing of surgical or diagnostic appliances or instruments for wound clamps A61B17/10; for ligaturing clips A61B17/122; packages or dispensers for surgical gloves or finger-stalls A61B42/40
• CPC Class Codes: A61B 50/33 Trays
• CPC Class Codes: A61F 2/0095 Packages or dispensers for prostheses or other implants for intraocular lenses A61F2/1691; for dental surgery A61C19/02
• CPC Class Codes: A61F 2/3609 Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts A61F2/3601 takes precedence
• CPC Class Codes: A61F 2/38 for elbows or knees
• CPC Class Codes: A61F 2/40 for shoulders
• CPC Class Codes: A61F 2/46 Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
• CPC Class Codes: A61F 2002/30332 Conically- or frustoconically-shaped protrusion and recess
• CPC Class Codes: A61F 2002/30604 modular
• CPC Class Codes: A61F 2002/30616 Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/30708 Means for distinguishing between left-sided and right-sided devices, Sets comprising both left-sided and right-sided prosthetic parts
• CPC Class Codes: A61F 2002/3071 Identification means; Administration of patients
• CPC Class Codes: A61F 2002/30948 using computerized tomography, i.e. CT scans
• CPC Class Codes: A61F 2002/30963 using templates, e.g. grid charts
• CPC Class Codes: A61F 2002/3611 Heads or epiphyseal parts of femur
• CPC Class Codes: A61F 2002/3625 Necks
• CPC Class Codes: A61F 2002/365 Connections of heads to necks
• CPC Class Codes: A61F 2002/3652 : Connections of necks to shafts
• CPC Class Codes: A61F 2002/4633 : for selection of endoprosthetic joints or for pre-operative planning
• CPC Class Codes: A61F 2220/0033 : made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2250/0084 : Means for distinguishing between left-sided and right-sided devices; Sets comprising both left-sided and right-sided prosthetic parts
• CPC Class Codes: A61F 2250/0089 : coded with symbols, e.g. dots, numbers, letters, words

Abstract

A case for modular neck components for hip implants. The case may include indicators based on independent variables associated with physical characteristics of the implant, including leg length, offset, and anteversion. During surgery, the surgeon may be confronted with a need to change a preoperatively-chosen modular neck. For example, the surgeon may desire a change in at least one of the variables, e.g., leg length, offset, and/or anteversion. The case allows the surgeon to quickly and easily select a different modular neck based on an evaluation of one of the variables without requiring reevaluation of the other variables. A method described herein may include preoperative planning in which a template including a grid coordinate system is used, which advantageously provides an intuitive system for the surgeon both preoperatively and during surgery.

Claims

1. A system for facilitating implant selection, the system comprising:

a plurality of implants including at least one subset in which at least one of a first, second, and third variable associated with a respective different physical characteristic of the implants is constant and the others of the first, second, and third variables vary within each said subset; and

at least one case including a plurality of receptacles, each said receptacle configured to receive a corresponding one of said plurality of implants, said plurality of receptacles configured to facilitate selection of one of said plurality of implants based on a change in said at least one variable.

2. The system of claim 1, wherein the plurality of implants are modular components of a hip implant system and the first variable corresponds to leg length, the second variable corresponds to offset, and the third variable corresponds to anteversion.

3. The system of claim 1, wherein said plurality of receptacles are arranged according to each said subset.

4. The system of claim 3, wherein the system includes one said case per said subset.

5. The system of claim 3, wherein the system includes one said case with multiple said subsets.

6. The system of claim 3, wherein the system includes a plurality of cases, each said case including a plurality of receptacles arranged according to each subset.

7. The system of claim 1, wherein each said implant is sized slightly smaller than a corresponding said receptacle, wherein each said implant is positionable in only said corresponding receptacle.

8. The system of claim 1, wherein said case further includes at least one removable portion.

9. The system of claim 1, wherein each said receptacle includes an indicator and each said implant includes an identifier corresponding to each said indicator.

10. The system of claim 1, wherein said at least one case further includes at least one template, said template including a grid coordinate system to assess said at least one variable, said grid coordinate system having a plurality of reference points corresponding to at least two of the first, second, and third variables.

11. The system of claim 1, wherein said at least one case includes a primary region and a secondary region, at least some of said plurality of implants positioned in said primary region, said primary region corresponding to a group of said plurality of implants primarily utilized.

12. The system of claim 1, wherein said case includes at least one anatomical structure identifier.

13. The system of claim 12, wherein said case further includes a first anatomical structure identifier and a second anatomical structure identifier, said first anatomical structure identifier configured for use in a first position of said case and said second anatomical structure identifier configured for use in a second position of said case, said first position of said case oriented 90°

from said second position of said case.

14. The system of claim 1, wherein said case includes a measurement indicia proximate each said receptacle, each said measurement indicia corresponding to at least two of said first, second, and third variables.

15. The system of claim 14, wherein said plurality of implants are modular components of a hip implant system and the first variable corresponds to leg length, the second variable corresponds to offset, and the third variable corresponds to anteversion, said measurement indicia corresponding to leg length and offset.

16. A system for facilitating implant selection, the system comprising:

a plurality of implants including at least one subset in which at least one of a first, second, and third variable associated with a respective different physical characteristic of the implants is constant and the others of the first, second, and third variables vary within each said subset; and

receptacle means for receiving each of said plurality of implants and for facilitating selection of one of said plurality of implants based on a change in said at least one variable.

17. The system of claim 16, wherein the plurality of implants are modular components of a hip implant system and the first variable corresponds to leg length, the second variable corresponds to offset, and the third variable corresponds to anteversion.

18. The system of claim 16, further comprising indication means for indicating a corresponding location of each said implant with respect to said receptacle means.

19. The system of claim 16, further comprising assessment means for assessing said at least one variable.

20. The system of claim 16, further comprising anatomical indication means for indicating an anatomical structure associated with said plurality of implants.