Prosthetic humeral device and method

• US 20070244565A1
• Filed: 04/17/2006
• Published: 10/18/2007
• Est. Priority Date: 04/17/2006
• Status: Abandoned Application

• Current Assignee: Robert Stchur
• Original Assignee: Robert Stchur
• Inventors: Stchur, Robert
• Application Number:
  US11/405,338
• Publication Number:
  US 20070244565A1
• Time in Patent Office: Days
• US Class Current: 623/19.140
• CPC Class Codes: A61B 17/1778 for the shoulder
• CPC Class Codes: A61B 17/842 Flexible wires, bands or straps A61B17/72, A61B17/82, A61B17/86 take precedence
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61F 2/4059 Humeral shafts
• CPC Class Codes: A61F 2/4612 of shoulders
• CPC Class Codes: A61F 2002/30578 having apertures, e.g. for receiving fixation screws
• CPC Class Codes: A61F 2002/30774 internally-threaded
• CPC Class Codes: A61F 2002/30841 Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/4062 Proximal or metaphyseal parts of shafts
• CPC Class Codes: A61F 2002/4622 having the shape of a forceps or a clamp

Abstract

A prosthetic humeral device (1) having at least two guide holes (11) located at predetermined locations thereon for the acceptance of a fastening means (29), which is preferably a screw (16) and a predeterminedly-shaped washer (6) with at least one projection (17) located on the underside. After inserting the elongated stem (14) of the prosthetic humeral device (1) into the humerus (2), a tuberosity grasping tool (19) is used to grasp a tuberosity (4) and (7). The tuberosity (4) and (7) is then positioned to an appropriate level on the prosthetic humeral device (1), a hole is drilled into the tuberosity (4) and (7), the screw (16) with washer (6) is inserted, the grasping tool (19) is removed and the screw (16) and washer (6) are tightened.

Claims

1. A prosthetic humeral device comprising:

an elongated stem and a humeral head;

said elongated stem having at least two internally-threaded guide holes located on the elongated stem; and

a means for fastening a greater tuberosity and a lesser tuberosity to said elongated stem using the at least two internally-threaded guide holes.

2. The prosthetic humeral device of claim 1 wherein:

said means for fastening is via a screw and a washer.

3. The prosthetic humeral device of claim 2 wherein:

said washer is star-shaped;

said washer has at least one hole for receiving said screw; and

said washer has an underside.

4. The prosthetic humeral device of claim 2 wherein:

said washer includes at least two prongs;

said washer has at least one hole for receiving said screw; and

said washer has an underside.

5. The prosthetic humeral device of claim 3 wherein:

said washer includes at least one projection located on said underside.

6. The prosthetic humeral device of claim 4 wherein:

said washer includes at least one projection located on said underside.

7. The prosthetic humeral device of claim 1 further comprising:

at least one lateral suture hole located on said humeral head.

8. The prosthetic humeral device of claim 1 further comprising:

at least one medial suture hole located on said humeral head.

9. The prosthetic humeral device of claim 5 further comprising:

at least one lateral suture hole located on said humeral head.

10. The prosthetic humeral device of claim 6 further comprising:

at least one lateral suture hole located on said humeral head.

11. The prosthetic humeral device of claim 7 further comprising:

at least one lateral suture hole located on said humeral head.

12. The prosthetic humeral device of claim 1 further comprising:

a grasping tool that is used in conjunction with said means for fastening a greater tuberosity and a lesser tuberosity to said at least two internally-threaded guide holes.

13. The prosthetic humeral device of claim 12 wherein:

said grasping tool has at least one handle;

said grasping tool having a bottom circle guide and a top circle guide;

a slot located in said bottom circle guide; and

a slot located in said top circle guide.

14. The prosthetic humeral device of claim 13 wherein:

said top circle guide has at least one spike.

15. The prosthetic humeral device of claim 13 wherein:

said bottom circle guide has at least one drill guide projection.

16. The prosthetic humeral device of claim 14 wherein:

said bottom circle guide has at least one drill guide projection.

17. The prosthetic humeral device of claim 12 wherein:

said grasping tool includes a locking mechanism to lock said at least one handle in a predetermined position.

18. A prosthetic humeral device comprising:

an elongated stem and a humeral head;

said elongated stem having at least two internally-threaded guide holes located on the elongated stem;

a means for fastening a greater tuberosity and a lesser tuberosity to said elongated stem using the at least two internally-threaded guide holes;

said means for fastening is via a screw and a washer;

said washer is star-shaped;

said washer has at least one hole for receiving said screw;

said washer has an underside;

said washer includes at least one projection located on said underside;

at least one lateral suture hole located on said elongated stem;

at least one medial suture hole located on said elongated stem;

a grasping tool that is used in conjunction with said means for fastening a greater tuberosity and a lesser tuberosity to said at least two internally-threaded guide holes;

said grasping tool having at least one handle;

said grasping tool having a bottom circle guide and a top circle guide;

a slot located in said bottom circle guide;

a slot located in said top circle guide;

said top circle guide has at least one spike;

said bottom circle guide has at least one drill guide projection; and

said grasping tool includes a locking mechanism to lock said at least one handle in a predetermined position.

19. A method for using a prosthetic humeral device comprising an elongated stem and a humeral head;

said elongated stem having at least two internally-threaded guide holes located on the elongated stem;

a means for fastening a greater tuberosity and a lesser tuberosity to said elongated stem using the at least two internally-threaded guide holes; and

said means for fastening is via a screw and a washer, said method comprising the steps of;

a. grasping said greater tuberosity;

b. drilling a hole through said greater tuberosity;

c. inserting said screw through a hole in said washer;

d. inserting said screw through the drilled hole in the greater tuberosity;

e. inserting said screw into one of said at least two internally-threaded guide holes; and

f. tightening said screw.

20. The method of claim 19 further comprising the steps prior to step f of:

g. grasping said lesser tuberosity;

h. drilling a hole through said lesser tuberosity;

i. inserting said screw through a hole in said washer;

j. inserting said screw through the drilled hole in the lesser tuberosity;

k. inserting said screw into one of said at least two internally-threaded guide holes; and

l. tightening said screw.

21. The method of claim 20 wherein:

said greater tuberosity is grasped using a grasping tool; and

said lesser tuberosity is grasped using a grasping tool.