Suprapatellar insertion system, kit and method

Patent metadata

Field	Value
Publication number	US-9101432-B2
Application number	US-201213729572-A
Country	US
Kind code	B2
Filing date	Dec 28, 2012
Priority date	Dec 29, 2011
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

A system is provided for inserting and securing, through a suprapatellar region of a leg, a nail into a medullary canal of a bone. The system can include a flexible sleeve configured to be partially inserted in the leg. The flexible sleeve can define a leading end and a trailing end spaced apart from the leading end along a first axis. The flexible sleeve can define a first cannulation that extends along the first axis between the leading and trailing ends. The first cannulation can be sized to receive therethrough at least the intramedullary nail. The system can further include a retaining member configured support at least a portion of the flexible sleeve. The retaining member can be configured to position the flexible sleeve through the suprapatellar region of the leg such that the flexible sleeve leading end is aligned with the proximal end of the bone. The intramedullary nail can be insertable through the flexible sleeve and into the medullary canal.

First claim

What is claimed:

1. A system for inserting and securing, through a suprapatellar region of a leg, an intramedullary nail into a medullary canal of a bone, the system comprising:
a flexible sleeve configured to be partially inserted in the leg, the flexible sleeve defining a leading end and a trailing end spaced apart from the leading end in a proximal direction along a first axis, the flexible sleeve defining a first cannulation extending along the first axis between the leading and trailing ends, the first cannulation sized to receive therethrough at least the intramedullary nail, wherein the flexible sleeve is configured to flex so as to change a shape of the first axis from a first configuration to a second configuration, wherein the second configuration is different than the first configuration;
a rigid inner sleeve comprising a distal end, a trailing portion and an elongated shaft portion located between the distal end and the trailing portion;
a retaining device comprising a handle and a retaining member that extends from the handle, the retaining member configured to releasably lock to the trailing end of the flexible sleeve, the retaining device further configured to releasably lock to the trailing portion of the rigid inner sleeve while the elongated shaft portion is disposed within the first cannulation of the flexible sleeve such that the flexible sleeve and the rigid inner sleeve are prevented from movement with respect to the retaining member along the first axis both in the proximal direction and in a distal direction opposite the proximal direction, wherein the retaining member is configured to position the flexible sleeve through the suprapatellar region of the leg such that the flexible sleeve leading end is aligned with a proximal end of the bone,
wherein the intramedullary nail is insertable through the flexible sleeve and into the medullary canal.

2. The system of claim 1 , further comprising an intramedullary nail, wherein the intramedullary nail defines a proximal end and a distal end, and at least one curved portion that is disposed at least between the proximal and distal ends of the intramedullary nail, and the flexible sleeve is configured to flex as the nail is inserted from the trailing end to the leading end.

3. The system of claim 2 , wherein the retaining member comprises an upper surface and an opposed lower surface and an aperture extending from the upper surface to the lower surface where the aperture defines a center axis extending from the upper surface to the lower surface along a first direction, wherein the system further comprises an insertion device configured for removable connection to the intramedullary nail, wherein the intramedullary nail and at least a portion of the insertion device is configured to be received within the first cannulation of the flexible sleeve, wherein when 1) the insertion device is connected to the intramedullary nail, and 2) the flexible sleeve is inserted at least partially in the leg, the insertion device can advance the intramedullary nail through the flexible sleeve along the first direction to position the intramedullary nail in the medullary canal.

4. The system of claim 3 , further comprising an aiming device connectable to the insertion device, the aiming device configured to guide at least one anchor toward the bone, wherein when 1) the aiming device is connected to the insertion device, and 2) the intramedullary nail is positioned in the medullary canal, the aiming device guides the at least one anchor toward the bone along a second direction that is transverse to the first direction.

5. The system of claim 4 , wherein the insertion device further comprises an insertion member defining a leading end and a trailing end spaced apart from a leading end along a second axis, the insertion member defines an insertion member bore extending between the leading and trailing ends along the second axis, wherein the insertion member is configured to be at least partially disposed in the first cannulation of the flexible sleeve.

6. The system of claim 5 , wherein the intramedullary nail defines a nail bore extending at least partially between the proximal and distal ends along a intramedullary nail direction, and one or more openings each configured to receive a portion of the at least one anchor, and the system further comprises a connecting rod configured to couple the insertion device to the intramedullary nail, wherein the connecting rod is configured to be at least partially disposed in the bore of the insertion member, wherein when the connecting rod is disposed at least partially in the bore of the insertion member, a portion of the connecting rod engages at least a portion of the intramedullary nail bore to connect the intramedullary nail to the insertion device.

7. The system of claim 5 , wherein the proximal end of the intramedullary nail defines a notch, and the leading end of the insertion member defines a tab, wherein the tab is configured to be received by the notch so as to rotatably fix in the insertion member relative the intramedullary nail.

8. The system of claim 4 , wherein the aiming device comprises an aiming member, and wherein the system further comprises a guide sleeve configured to be supported by the aiming member, wherein the guide sleeve defines a proximal end, a distal end spaced apart from an proximal end along a guide sleeve axis, and a guide sleeve cannulation extending between the proximal and distal ends along the guide sleeve axis, wherein the at least one anchor is insertable through the guide sleeve cannulation.

9. The system of claim 8 , wherein the aiming member defines a first surface, a second surface spaced apart from the first surface along the second direction, and a plurality of channels extending between the first and second surfaces along the second direction, each channel configured to at least partially receive the guide sleeve therein.

10. The system of claim 9 , wherein the aiming member is a frame that supports at least one extension member, the at least one extension member includes at least one of the plurality of channels, wherein when the aiming member is attached to the insertion device 1) the frame partially surrounds a portion of the leg, and 2) the at least one extension member extends along the first direction.

11. The system of claim 1 , wherein the retaining member comprises an upper surface and an opposed lower surface and an aperture extending from the upper surface to the lower surface and the trailing end of the flexible sleeve is configured to releasably lock to the retaining member within the aperture of the retaining member and the trailing portion of the rigid inner sleeve is configured to releasably lock to the retaining member within the aperture of the retaining member.

12. The system of claim 11 , further comprising a rotating blocking device located on the retaining member where the rotating blocking device comprises a shaft extending from the upper surface and an enlarged head connected to the shaft, where the head is rotatable to extend over the aperture of the retaining member.

13. The system of claim 11 , wherein the trailing portion of the rigid inner sleeve is configured to releasably lock within the aperture at a first position and wherein the trailing end of the flexible sleeve is configured to releasably lock within the aperture at a second position that is closer to the lower surface than the first position.

14. The system of claim 11 , wherein the retaining member comprises a first projection and a second projection with both the first and second projections extending into the aperture, and the trailing po

Assignees

• Depuy Synthes Products Inc

Inventors

• Limouze Robert
• Powell Sean

Classifications

• A61B17/1717 Primary

  for applying intramedullary nails or pins · CPC title

• A61B17/164

  intramedullary · CPC title

• A61B17/1725

  for applying transverse screws or pins through intramedullary nails or pins · CPC title

• A61B17/8872

  Instruments for putting said fixation devices against or away from the bone (A61B17/7074, A61B17/808 take precedence) · CPC title

• A61B17/1764

  for the knee · CPC title