Powered bone screw device

• US 20020107525A1
• Filed: 02/02/2001
• Published: 08/08/2002
• Est. Priority Date: 02/02/2001
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: American Medical Systems Incorporated (Endo International PLC)
• Inventors: Anderson, Kimberly A., Harari, Boaz, Jacoby, Karny
• Granted Patent: US 6,602,260 B2
• Time in Patent Office: Days
• US Class Current: 606/104
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/1633 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 Class Codes: A61B 17/8891 at its periphery
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors for applying suture clamps, clips or locks A61B2017/0488
• CPC Class Codes: A61B 2017/044 with a threaded shaft, e.g. screws
• CPC Class Codes: B25B 21/00 Portable power-driven screw or nut setting or loosening tools; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; for mounting or dismounting wheels B60B29/006; Attachments for drilling apparatus serving the same purpose machines B23P19/06
• CPC Class Codes: B25B 23/101 for hand-driven screw-drivers B25B23/105 takes precedence

Abstract

A medical screwdriver for inserting a medical screw connected to a suture into a bone. The screwdriver includes a shaft adapted to hold a medical screw at its distal end, a motor adapted to rotate the shaft, and a suture-receiving channel leading from the distal end of the shaft to a point distanced from the distal end of the shaft by at least 50% of the length of the shaft.

Claims

1. A medical screwdriver for inserting a medical screw connected to a suture into a bone, comprising:

a shaft adapted to hold a medical screw at its distal end;

a motor adapted to rotate the shaft; and

a suture-receiving channel leading from the distal end of the shaft to a point distanced from the distal end of the shaft by at least 50% of the length of the shaft.

2. A medical screwdriver according to claim 1, wherein the suture-receiving channel leads to a point distanced from the distal end of the shaft by the length of the shaft.

3. A medical screwdriver according to claim 1, wherein the suture-receiving channel comprises a through bore defined in the shaft.

4. A medical screwdriver according to claim 3, wherein the hollow shaft is coupled to the motor through a gear pair.

5. A medical screwdriver according to claim 3, wherein the hollow shaft is coupled to the motor through a shaft housing which defines a bore therethrough.

6. A medical screwdriver according to claim 1, wherein the motor is held in a casing which defines a through channel, which channel leads from a first side of the casing close to a coupling to the hollow shaft to an opposite side of the casing.

7. A medical screwdriver according to claim 1, comprising a switch having a first position in which a suture located in the channel is held tightly and a second position in which the suture is free to move.

8. A screwdriver according to claim 1, comprising a stationary sheath which surrounds the shaft.

9. A screwdriver according to claim 8, wherein the stationary sheath is removable.

10. A screwdriver according to claim 8, wherein the stationary sheath comprises a key which is adapted to fit in a respective notch in a casing of the motor.

11. A screwdriver according to claim 8, wherein the channel is defined between the stationary sheath and the shaft.

12. A screwdriver according to claim 8, wherein the stationary sheath comprises a distal collapsible shield which is adapted to cover, in the absence of an axially applied force, at least a portion of a screw held by the shaft.

14. A screwdriver according to claim 13, wherein the stationary sheath comprises a distal collapsible shield which is adapted, in the absence of force, to cover at least a portion of a screw held by the shaft.

16. A sheath according to claim 15, wherein the rotation stopper comprises a key protruding from a proximal end of the sheath, which key is adapted to fit into a compatible grove of a screwdriver.

17. A sheath according to claim 15, wherein the sheath defines a slot and the rotation stopper comprises a rod which is adapted to fit into the slot and to connect to a screwdriver.

18. A sheath according to claim 15, wherein the sheath is at least two centimeters long.

13. A medical screwdriver for inserting a medical screw connected to a suture into a bone, comprising:

a shaft adapted to hold a medical screw at its distal end;

a stationary sheath which surrounds the shaft; and

a motor adapted to rotate the shaft so as to push the screw into a bone.

15. A stationary sheath, comprising:

a sheath;

a collapsible shield connected at a distal end of the sheath; and

a rotation stopper which prevents the sheath from rotating.