Aiming Device

• US 20090299416A1
• Filed: 10/05/2006
• Published: 12/03/2009
• Est. Priority Date: 10/10/2005
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: Toggwiler, Peter, Hänni, Markus, Suhm, Norbert
• Granted Patent: US 9,687,258 B2
• Time in Patent Office: Days
• US Class Current: 606/86.00R
• CPC Class Codes: A61B 17/151 for corrective osteotomy
• CPC Class Codes: A61B 17/1668 for the upper femur A61B17/164 takes precedence
• CPC Class Codes: A61B 17/1697 specially adapted for wire insertion
• CPC Class Codes: A61B 17/17 Guides or aligning means for drills , mills, pins or wires
• CPC Class Codes: A61B 17/1703 using imaging means, e.g. by X-rays
• CPC Class Codes: A61B 17/1725 for applying transverse screws or pins through intramedullary nails or pins
• CPC Class Codes: A61B 17/1732 for bone breaking devices
• CPC Class Codes: A61B 17/175 for preparing the femur for hip prosthesis insertion
• CPC Class Codes: A61B 2090/3983 Reference marker arrangements for use with image guided surgery
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis

Abstract

An aiming device for insertion of a Kirschner-wire to treat a target bone, comprises an aiming block permitting placement of a Kirschner-wire against the target bone and a forceps connected to the aiming block, the forceps being configured to clamp to the target bone.

Claims

1-35. -35. (canceled)

36. An aiming device for insertion of a Kirschner-wire to treat a target bone, comprising:

an aiming block permitting placement of a Kirschner-wire against the target bone; and

a forceps connected to the aiming block, the forceps being configured to clamp to the target bone.

37. The aiming device according to claim 36, wherein the forceps comprise a ratchet mechanism fixing legs thereof in a desired clamping position on the bone.

38. The aiming device according to claim 36, wherein the forceps comprise a plurality of levers enabling single handed use thereof.

39. The aiming device according to claim 36, wherein an orientation of the aiming block relative to the bone is adjustable in a first plane.

40. The aiming device according to claim 36, further comprising a guide member attached to the aiming block, the guide member being moveable relative to the aiming block in a second plane.

41. The aiming device according to claim 40, wherein the guide member is configured to receive a Kirschner-wire and is pivotable within the aiming block about an axis of rotation.

42. The aiming device according to claim 40, wherein the axis of rotation passes through a longitudinal axis of the guide member.

43. The aiming device according to claim 40, further comprising a frictional engagement mechanism between the guide member and the aiming block self-locking the guide member at a predefined angle relative to the aiming block.

44. An aiming device for insertion of a Kirschner-wire to treat a target bone, comprising:

a) an aiming block permitting placement of for a Kirschner-wire to be placed against the target bone;

b) a guide member pivotally coupled to the aiming block, the guide member receiving the Kirschner-wire; and

c) a fixing device coupled to the aiming block, the fixing device being clampable to the target bone to maintain the aiming block in a desired position relative to the target bone.

45. The aiming device according to claim 44, wherein the axis of rotation of the guide member passes through a longitudinal axis of the guide member.

46. The aiming device according to claim 44, wherein the aiming block is adjustable relative to the fixing device in a first plane.

47. The aiming device according to claim 46, wherein the guide member is moveable relative to the aiming block in a second plane.

48. The aiming device according to claim 44, further comprising a frictional engagement mechanism between the guide member and the aiming block self-locking the guide member at a predefined angle relative to the aiming block.

49. The aiming device according to claim 44, wherein the fixing device comprises a forceps.

50. The aiming device according to claim 47, wherein the aiming block is adjustable in a third plane relative to the fixing device.

51. The aiming device according to claim 47, wherein the first and second planes are angled relative to one another between 90°

and 160°

.

52. The aiming device according to claim 50, wherein the first, second and third planes are at an angle between 90°

and 160°

relative to one another.

53. The aiming device according to claim 50, wherein the aiming block is displaceable relative to the fixing device parallel to the third plane.

54. The aiming device according to claim 44, wherein the aiming block is attached to the fixing device via a guided, fixable rail.

55. The aiming device according to claim 54, wherein a proximal section of the rail extends parallel to the forceps in the third plane and wherein a distal section of the rail extends at an angle with respect to the proximal section thereof so that the proximal section is guided substantially parallel to a target bone to which the forceps is clamped.

56. The aiming device according to claim 55, wherein the angle between the proximal and distal sections of the rail is one of adjustable and fixed in a range between 90°

and 160°

.

57. The aiming device according to claim 44, wherein at least one of the aiming block and the guide member is made of a radiolucent material.

58. The aiming device according to claim 57, wherein the at least one of the aiming block and the guidance made of a radiolucent material is formed of PEEK.

59. A method treating a target bone, comprising:

placing against the target bone a device including;

an aiming block permitting placement of a Kirschner-wire against the target bone;

a forceps connected to the aiming block;

a rail movably coupled to the forceps, at least a distal portion of the rail extending, when the forceps is coupled to the target bone in a desired orientation, approximately parallel to a longitudinal axis of the target bone; and

a guide member rotatably coupled to the aiming block, the guide member including a lumen configured to receive a Kirschner-wire;

displacing relative to the forceps the distal portion of the rail along a path substantially parallel to the longitudinal axis of the target bone until the aiming block abuts a periost of the target bone; and

pivoting the guide member relative to the aiming block to an orientation in which the lumen extends along an insertion axis along which it is desired to pass the Kirschner-wire to the target bone.

60. The method according to claim 59, further comprising at least one of displacing and pivoting the aiming block relative to the distal section of the rail to align the lumen of the guide member and the insertion axis.