US5597379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for femoral resection alignment
Assignee: Biomet Manufacturing LLC
•
Filing: 1994-11-18
•
Granted: 1997-01-28
•
Expires: 2014-11-18
Abstract
Abstract The apparatus of the present invention includes a number of components including a guide body component, an extension block component, a rotating arm component, an extension rod component, and a tibial referencing component. The guide body component contacts the distal-most surface of the femur. Its location is based off of the posterior femoral condyles and the surface of the distal-most femoral resection or the unresected distal-most femoral surface. The rotating arm component is interconnected with the guide body and may rotate with respect thereto, thus allowing for the direct or indirect adjustment of the rotating alignment of cutting guides for resecting the distal femur. The rotating arm component carries arms with drill screw apertures which direct placement of drill holes in the femur which are used to attach a cutting guide to the femur. The rotating arm component is attached to the extension rod component which extends to the tibial referencing component which references the location and orientation of the proximal resected surface of the tibia. Thus the rotating alignment of the distal femoral prosthesis is established with respect to the orientation of the resected proximal tibial surface.
Inventors
- 👤 Timothy G. Haines
- 👤 David B. Goldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:04
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/17; A61B17/1739; A61B17/1764; A61B17/14; A61B17/15; A61B17/154; A61B17/155; A61B17/157; A61B17/1662; A61B17/1675; A61B2017/1602
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
100 words
An apparatus for locating and orienting a cutting guide for resecting a human distal femur comprising: tibia referencing means for referencing a resected surface of a tibia; extension means extending from the tibia referencing means; rotational alignment means engageable with the extension means and movable therealong, the rotational alignment means including guide means for locating and orienting drill holes on a distal femur; and body means for contacting a distal femur, the body means including a tongue extending from a lower end thereof for contacting posterior condyles of a femur, the body means rotatably interconnected with the rotational alignment means.
Claim 2
Independent Claim
100 words
An apparatus for locating and orienting a cutting guide for resecting a human distal femur comprising: tibia referencing means for referencing a resected surface of a tibia; extension means extending from the tibia referencing means; rotational alignment means engageable with the extension means and movable therealong, the rotational alignment means including guide means for locating and orienting drill holes on a distal femur; and body means for contacting a distal femur, the body means including a tongue extending from a lower end thereof for contacting posterior condyles of a femur, the body means rotatably interconnected with the rotational alignment means.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1 wherein the body means includes a lock aperture and lock means for locking the rotational alignment means with respect to the body means.
Claim 4
Dependent Claim
24 words
The apparatus of claim 1 wherein the body means includes drill apertures positioned in registration with the guide means of the rotational alignment means.
Claim 5
Dependent Claim
27 words
The apparatus of claim 3 further comprising drill means for extending through the guide means and the drill apertures for forming drill holes in a distal femur.
Claim 6
Dependent Claim
22 words
The apparatus of claim 3 wherein the drill apertures of the body means comprise elongated slots for registration with the guide means.
Claim 7
Dependent Claim
18 words
The apparatus of claim 1 wherein the rotational alignment means is maintained parallel to the tibia referencing means.
Claim 8
Dependent Claim
20 words
The apparatus of claim 1 wherein the extension means maintains the rotational alignment means parallel to the tibia referencing means.
Claim 9
Dependent Claim
17 words
The apparatus of claim 1 wherein the rotational alignment means includes arms for supporting the guide means.
Claim 10
Dependent Claim
16 words
The apparatus of claim 8 wherein the arms are fixed parallel to the tibia referencing means.
Claim 11
Independent Claim
98 words
An apparatus for locating and orienting a cutting guide for resecting a human distal femur comprising: a body including a front surface for contacting a human femur; a tongue extending from a lower end of the body for extending under a human femur; rotational alignment means interconnected with the body for rotating with respect to the body; guide means positioned on the rotational alignment means for locating and orienting drill holes on a distal femur; tibia referencing means for referencing a resected proximal tibia; the tibia referencing means interconnected with the rotational alignment means by extension rod means.
Claim 12
Independent Claim
98 words
An apparatus for locating and orienting a cutting guide for resecting a human distal femur comprising: a body including a front surface for contacting a human femur; a tongue extending from a lower end of the body for extending under a human femur; rotational alignment means interconnected with the body for rotating with respect to the body; guide means positioned on the rotational alignment means for locating and orienting drill holes on a distal femur; tibia referencing means for referencing a resected proximal tibia; the tibia referencing means interconnected with the rotational alignment means by extension rod means.
Claim 13
Dependent Claim
26 words
The apparatus of claim 10 wherein the tongue includes two planar members positioned alongside each other with a space therebetween for accepting a posterior cruciate ligament.
Claim 14
Dependent Claim
19 words
The apparatus of claim 11 wherein the tibia referencing means includes a channel for accepting a posterior cruciate ligament.
Claim 15
Dependent Claim
23 words
The apparatus of claim 10 wherein the body includes drill apertures positioned in registration with the guide means of the rotational alignment means.
Claim 16
Dependent Claim
27 words
The apparatus of claim 13 further comprising drill means for extending through the guide means and the drill apertures for forming drill holes in a distal femur.
Claim 17
Dependent Claim
18 words
The apparatus of claim 10 wherein the rotational alignment means is maintained parallel to the tibia referencing means.
Claim 18
Dependent Claim
17 words
The apparatus of claim 15 wherein the rotational alignment means is movable along the extension rod means.
Claim 19
Dependent Claim
17 words
The apparatus of claim 10 wherein the rotational alignment means includes arms for supporting the guide means.
Claim 20
Dependent Claim
16 words
The apparatus of claim 17 wherein the arms are fixed parallel to the tibia referencing means.
Claim 21
Dependent Claim
119 words
An alignment apparatus for locating and orienting a cutting guide for resecting a human distal femur comprising: a body including a front surface for contacting a human femur; a tongue extending from a lower end of the body for extending under a human femur; rotational alignment means rotatably interconnected with the body; guide means interconnected with the rotational alignment means for locating and orienting drill holes on a distal femur; tibia referencing means for referencing a resected proximal tibia; extension means attached between the tibia referencing means and the rotational alignment means; means for distracting the femur from the tibia by actuating the extension means to move the rotational alignment means and the body from the tibia referencing means.
Claim 22
Dependent Claim
119 words
An alignment apparatus for locating and orienting a cutting guide for resecting a human distal femur comprising: a body including a front surface for contacting a human femur; a tongue extending from a lower end of the body for extending under a human femur; rotational alignment means rotatably interconnected with the body; guide means interconnected with the rotational alignment means for locating and orienting drill holes on a distal femur; tibia referencing means for referencing a resected proximal tibia; extension means attached between the tibia referencing means and the rotational alignment means; means for distracting the femur from the tibia by actuating the extension means to move the rotational alignment means and the body from the tibia referencing means.
Claim 23
Dependent Claim
17 words
The apparatus of claim 19 wherein the rotational alignment means is threadibly engaged with the extension means.
Claim 24
Dependent Claim
31 words
The apparatus of claim 20 wherein the extension means includes a handle at an upper end thereof and rotation of the handle moves the rotational alignment means along the extension means.
Claim 25
Dependent Claim
16 words
The apparatus of claim 21 wherein the rotational alignment means includes arms carrying the guide means.
Claim 26
Dependent Claim
23 words
The apparatus of claim 22 wherein the body includes drill apertures positioned in registration with the guide means of the rotational alignment means.
Claim 27
Dependent Claim
27 words
The apparatus of claim 23 further comprising drill means for extending through the guide means and the drill apertures for forming drill holes in a distal femur.
Claim 28
Dependent Claim
16 words
The apparatus of claim 24 wherein the arms are fixed parallel to the tibia referencing means.
Claim 29
Independent Claim
118 words
A method for locating and orienting a cutting guide for resecting a human distal femur comprising the steps of: contacting a tibia referencing component against a resected tibia; contacting a body against distal femoral condyles of a human femur; contacting a tongue extending from a lower end of the body against posterior femoral condyles; distracting the femur from the tibia by actuating an extension rod extending between the tibia referencing component and the body; drilling drill holes into the femur through drill hole apertures provided in arms of a rotational alignment component interconnected between the extension rod and the body; removing the body from the femur; attaching a cutting guide device to the femur through the drill holes.
Claim 30
Independent Claim
118 words
A method for locating and orienting a cutting guide for resecting a human distal femur comprising the steps of: contacting a tibia referencing component against a resected tibia; contacting a body against distal femoral condyles of a human femur; contacting a tongue extending from a lower end of the body against posterior femoral condyles; distracting the femur from the tibia by actuating an extension rod extending between the tibia referencing component and the body; drilling drill holes into the femur through drill hole apertures provided in arms of a rotational alignment component interconnected between the extension rod and the body; removing the body from the femur; attaching a cutting guide device to the femur through the drill holes.
Claim 31
Dependent Claim
52 words
The method of claim 26 further comprising, prior to contacting the tibia referencing component against a resected tibia, the steps of: resecting the proximal tibia; inserting an extension block component between the resected proximal tibia and the femur; performing ligamentous release of collateral ligaments to provide even tension of the collateral ligaments.
Claim 32
Dependent Claim
38 words
The method of claim 27 wherein the step of distracting the femur with respect to the tibia comprises actuating the extension rod to move the rotational alignment component and the body with respect to the tibia referencing component.
Claim 33
Dependent Claim
37 words
The method of claim 28 wherein the rotational alignment component is threadibly engaged with the extension rod and rotating the extension rod moves the rotational alignment component and the body with respect to the tibia referencing component.
References Cited (Backward Citations)
US4487203A
Cited
US4653488A
Cited
US4457307A
Cited
US4567886A
Cited
US4501266A
Cited
US4566448A
Cited
US4474177A
Cited
US4586496A
Cited
US4721104A
Cited
US4787383A
Cited
US4736737A
Cited
US4722330A
Cited
US5250050A
Cited
US5047032A
Cited
US4938762A
Cited
US4896663A
Cited
US4892093A
Cited
US5049149A
Cited
US5002545A
Cited
US5053037A
Cited
US5098436A
Cited
US5234432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |