Tibial cutting block

Patent metadata

Field	Value
Publication number	US-9974550-B2
Application number	US-201514833821-A
Country	US
Kind code	B2
Filing date	Aug 24, 2015
Priority date	Aug 25, 2014
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A tibia cutting block for performing precise cuts into a tibia comprises an approximately cuboid body with a tibia attachment side and opposing thereto a front side. The body has a cutting guide slot extending from a top side into the body, a blade holding slot extending from a right side or a left side into the body, a first anchoring pin hole which is close to the intersection of a first plane defined by the blade holding slot and a second plane defined by the a cutting guide slot, a second anchoring pin hole distant from the first anchoring pin hole and a reference pin guide. All are penetrating the body from the front side to the tibia attachment side.

First claim

What is claimed is:

1. A tibia cutting block with an approximately cuboid body comprising:
a tibia attachment side and opposing thereto a front side,
a blade holding slot extending from a right side or a left side and penetrating the body from the front side to the tibia attachment side,
a cutting guide slot extending from a top side and penetrating the body from the front side to the tibia attachment side,
a first anchoring pin hole being close to an intersection of a first plane defined by the blade holding slot and a second plane defined by the a cutting guide slot, the first anchoring pin hole penetrating the body from the front side to the tibia attachment side,
a second anchoring pin hole being distant from the first anchoring pin hole and penetrating the body from the front side to the tibia attachment side, and
a reference pin guide groove formed in the top side and extending from the front side to the tibia attachment side.

2. A tibia cutting block with an approximately cuboid body comprising:
a tibia attachment side and opposing thereto a front side,
a first blade holding slot extending from a right side or a left side and penetrating the body from the front side to the tibia attachment side,
a second blade holding slot extending from a right side or a left side approximately in a same plane and opposing to the first blade holding slot, further penetrating the body from the front side to the tibia attachment side,
a first anchoring pin hole being between the first blade holding slot and the second blade holding slot, the first anchoring pin hole penetrating the body from the front side to the tibia attachment side,
a second anchoring pin hole being distant from the first anchoring pin hole and penetrating the body from the front side to the tibia attachment side, and
a reference pin guide groove formed in a top side and extending from the front side to the tibia attachment side.

3. The tibia cutting block according to claim 1 , wherein the reference pin guide extends from the front side to the tibia attachment side.

4. A tibia cutting block with an approximately cuboid body comprising:
a tibia attachment side and opposing thereto a front side,
a blade holding slot extending from a right side or a left side and penetrating the body from the front side to the tibia attachment side,
a cutting guide slot extending from a top side and penetrating the body from the front side to the tibia attachment side,
a first anchoring pin hole being close to an intersection of a first plane defined by the blade holding slot and a second plane defined by the a cutting guide slot, the first anchoring pin hole penetrating the body from the front side to the tibia attachment side,
a second anchoring pin hole being distant from the first anchoring pin hole and penetrating the body from the front side to the tibia attachment side, and
a reference pin guide extending from the front side to the tibia attachment side;
wherein a reference pin lock is provided to lock a reference pin to the cutting block only allowing the cutting block to slide along a longitudinal axis of the reference pin and/or to rotate about said axis.

5. The tibia cutting block according to claim 1 , wherein a width of the blade holding slot is less than the diameter of the first anchoring pin hole.

6. The tibia cutting block according to claim 1 , wherein the first anchoring pin hole is not connected to the blade holding slot.

7. The tibia cutting block according to claim 1 , wherein the first anchoring pin hole is not connected to the cutting guide slot.

8. The tibia cutting block according to claim 1 , wherein the body comprises plastic or steel.

9. An instrument set comprising:
a tibia cutting block with an approximately cuboid body including:
a tibia attachment side and opposing thereto a front side,
a blade holding slot extending from a right side or a left side and penetrating the body from the front side to the tibia attachment side,
a cutting guide slot extending from a top side and penetrating the body from the front side to the tibia attachment side,
a first anchoring pin hole being close to an intersection of a first plane defined by the blade holding slot and a second plane defined by the a cutting guide slot, the first anchoring pin hole penetrating the body from the front side to the tibia attachment side,
a second anchoring pin hole being distant from the first anchoring pin hole and penetrating the body from the front side to the tibia attachment side, and
a reference pin guide extending from the front side to the tibia attachment side;
a varus-valgus angle setting device, and
an angle adapter for connecting the varus-valgus angle setting device to the tibia cutting block.

10. The instrument set of claim 9 , further comprising:
a reference blade, and
at least one anchoring pin.

Assignees

• Arthrex Inc

Inventors

• Seitlinger Gerd
• Dirisamer Florian
• Moll Uta
• Naudin Stéphane
• Uhing Frank
• Gerlinde Michel

Classifications

• A61B17/92

  Impactors or extractors, e.g. for removing intramedullary devices {(insertion or extraction of artificial joints A61F2/4603)} · CPC title

• A61B17/864

  hollow, e.g. with socket or cannulated · CPC title

• A61B17/157 Primary

  Cutting tibia · CPC title

• A61B17/8886

  holding the screw head · CPC title

• A61B17/1764 Primary

  for the knee · CPC title