CA1241577A - Tensor distal femoral resector guide - Google Patents
Tensor distal femoral resector guideInfo
- Publication number
- CA1241577A CA1241577A CA000447455A CA447455A CA1241577A CA 1241577 A CA1241577 A CA 1241577A CA 000447455 A CA000447455 A CA 000447455A CA 447455 A CA447455 A CA 447455A CA 1241577 A CA1241577 A CA 1241577A
- Authority
- CA
- Canada
- Prior art keywords
- tibia
- cutting guide
- tensor
- ligaments
- ligament
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/14—Surgical saws ; Accessories therefor
- A61B17/15—Guides therefor
- A61B17/154—Guides therefor for preparing bone for knee prosthesis
- A61B17/155—Cutting femur
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0268—Joint distractors for the knee
Abstract
TENSOR DISTAL FEMORAL RESECTOR GUIDE:
ABSTRACT OF THE DISCLOSURE
A ligament tensor and distal femoral resector guide includes an adjustable support member for mounting on a tibial cutting guide including a guide slot in which is reciprocably mounted a slide member having an arm extending outward therefrom for engaging the condylar notch between the femoral condyles and a screw member threadably engaging the slide member for adjusting the position of the slide member and arm relative to the tibia cutting guide head for establishing tension in the ligaments of a knee structure.
A flat pressure plate is removably mounted in the slots of the tibia cutting guide head for engaging the sectioned tibia plateau for applying pressure to the tibia for tensioning of the ligaments. A cutting guide head for guiding the resection of distal femoral condyles is mounted on the adjustable support member.
ABSTRACT OF THE DISCLOSURE
A ligament tensor and distal femoral resector guide includes an adjustable support member for mounting on a tibial cutting guide including a guide slot in which is reciprocably mounted a slide member having an arm extending outward therefrom for engaging the condylar notch between the femoral condyles and a screw member threadably engaging the slide member for adjusting the position of the slide member and arm relative to the tibia cutting guide head for establishing tension in the ligaments of a knee structure.
A flat pressure plate is removably mounted in the slots of the tibia cutting guide head for engaging the sectioned tibia plateau for applying pressure to the tibia for tensioning of the ligaments. A cutting guide head for guiding the resection of distal femoral condyles is mounted on the adjustable support member.
Description
The present invention relates to orthopedic surgical instruments and pertains particularly to a combination tensor and distal femoral resector guide for utilization in total knee surgical techniques.
During total knee surgery, it is necessary to establish proper alignment of the knee structure and proper tension in the ligaments during the alignment portion of the surgical procedure.
Proper tension and alignment at this point in the procedure assures proper fit of the prosthesis and proper tensioning of the ligaments which is necessary for proper functioning of the knee structure after surgery.
The present invention was developed for utilization in conjunction with instrumentation disclosed and claimed in United States Patent 4,524,766 entitled "Surgical Knee Alignment Method and System", Thomas D. Petersen. Such instrumentatlon was developed for achieving superior results from total knee surgery.
The present inventlon was devised to provide proper tensioning ln the ligaments of the knee structure and proper allgn-ment at certain points in the surgical procedures.
SUMMARY OF THE INVENTION
It is the primary object of the present invention to provide an improved ligament tensor.
In accordance with the primary aspect of the present ,~
5~
During total knee surgery, it is necessary to establish proper alignment of the knee structure and proper tension in the ligaments during the alignment portion of the surgical procedure.
Proper tension and alignment at this point in the procedure assures proper fit of the prosthesis and proper tensioning of the ligaments which is necessary for proper functioning of the knee structure after surgery.
The present invention was developed for utilization in conjunction with instrumentation disclosed and claimed in United States Patent 4,524,766 entitled "Surgical Knee Alignment Method and System", Thomas D. Petersen. Such instrumentatlon was developed for achieving superior results from total knee surgery.
The present inventlon was devised to provide proper tensioning ln the ligaments of the knee structure and proper allgn-ment at certain points in the surgical procedures.
SUMMARY OF THE INVENTION
It is the primary object of the present invention to provide an improved ligament tensor.
In accordance with the primary aspect of the present ,~
5~
- 2 - 70751-3 invention, there is provided a ligament tensor for tensioning the ligaments in a knee structure during knee surgery, comprising:
a support frame, first mounting means for mounting said support frame to a tibia; second means for noninvasively engaging a distal end of a femur and means interacting between said first mounting means and second means for moving said second means relative to said first mounting means for tensioning the ligaments in said knee structure, said means interacting comprising:
(a) a threaded hole extending through said second means;
(b) a threaded screw threadably extending through said threaded hole and engagable with said first mounting means;
(c) said second means being constrained from rotation about an axis defined by said threaded hole whereby rotation of said threaded screw with respect to said threaded hole in a first direction tensions said ligaments while rotation of said threaded screw with respect to said threaded hole in a second direction contracts said ligaments.
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects and advantages of the pre-sent invention will become apparent from the following description when read in conjunction with the drawings wherein:
Figure l is a perspective view of a tensor and resector guide in accordance with the invention.
Figure 2 is a rear elevation view of the embodiment of Figure 1.
Figure 3 is a side elevation view of the embodiment of 7~
- 2a - 70751-3 Figure 1 with the tensor in the retracted position.
Figure 4 is a view like Figure 3 showing the tensor in the extended position.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
Turning to the drawings, a combination tensor and resector guide in accordance with the invention is .,~
_3_ ~2~15~
illustrated in use in conjunction with a tibia section guide which is utilized as the base support structure. A
tibia cutting guide includes an elongated shank or bar member 12 having a curved upper end which supports a tibia cutting guide head 14. The cutting guide head is positioned and angled to guide the cutting or resectioning of a tibial plateau for total knee surgery. The cutting guide head 14 includes a transverse cutting guide slot 16.
pair of anchoring pins 18 extend through a pair of spaced apart bores in the cutting guide head 14 for anchoring it to the upper end of a tibia. An ankle guide bracket 20 attached to the lower end of the shank or bar 12 engages the tibia at the ankle for supporting and aligning the tibia cutting guide structure.
The present invention comprises an attachment for attaching to and supporting on the tibia cutting guide,and for applying the proper selected tension to the ligaments of the knee structure during appropriate stages of the ; surgical procedures. The present invention comprises a frame in the form of a generally elongated flat bar member 22 that has a curved upper end which supports a support housing structure 24 to be more specifically described.
The support member 22 includes a plurality of bores 84 and ; an elongated slot 86 for fitting over and adjusting relative to a pair of bolts or studs 26 and 28 supported on the support member 12 and including thumb screws or nuts 30 and 32 for securing the members in position relative to each other.
The support housing structure has a generally T-configurstion with a pair of outwardly extending arms 34 .
.
_4~ 577 and 36 having cutting guide slots 38 and 40 formed therein for guiding the cutting of the femoral condyles. A central upwardly extending support member 24 includes a guide slot 44 in which is mounted a slide member 46 having an outwardly extending arm 98 thereon. The slide member 46 is reciprocably mounted within the slide or guide slot 44 and includes a central threaded bore 50 which is threadably engaged by a threaded screw or shaft 52 which is rotatably mounted within a nonthreaded bore 54 in the vertical support member 42. A head 56 on the upper end of the screw member 52 includes a plurality of radially extending bores 58 for receiving a torque handle 60 for applying torque to the screw. The screw 52 includes a lower end or tip 52a in the form of a pointed or generally conical bearing structure that engages the upper surface of the tibia cutting guide head 14 and is supported axially thereby ,for raising the slide member 46 upon rotation thereof.
The arm 48 extends into the intercondylar notch between the pair of condyles at the end of the femur ~0 (Figure 4) when the leg is in extension for engaging and applying thereto a force for tensioning the ligaments.
pair of laterally spaced bores 60 and 62 are formed in the arm members 34 and 36 and receive a pair of anchoring pins 64 for anchoring the condylar resector guide to the femur.
The central support structure or member 42 is provided with a flat, straight or planar surface 68, which is adapted to lie flat against a preplaned or filed flat surface 82 on the anterior femoral cortex. This surface 82 is prepared to lie parallel to the axis of the femur. The surface 68 extends parallel to the axis of the tibia where ~241S77 the guide assembly 12 is properly mounted on the tibia.
Consequently, when the surfaces 68 and 82 align with each other, the leg is held in absolute 180 of extension.
Referring to Figure 4, the instrument is shown installed in a knee joint structure between a femur 69 and a tibia 70. The arm 48 is shown engaging a notch surface 72 between condyles 74 and 76 on femur 69. The pressure plate 66 mounted in slot 16 of the tibia cutting guide head 14 engages the sectioned surface 78 of the tibia 70.
Extension of the screw 52 spreads the arm 48 and plate 66 apart applying tension to the ligaments 80 (only one of which is shown).
In use, the pressure plate 66 is inserted in the guide slot 16 of the properly mounted tibia cutting guide head 14 and rests on top of the sectioned surface 78 of the tibia as shown in Figure 4. The arm 48 extends outward ! and into engagement with the surface 72 in the condylar slot between the condyles 74 and 76 as shown in figure 4.
Rotation of the threaded shank or screw 52 raises the slide 46 and attached arm 48 upward for engagement with the notch surface 72 between the condyles 74 and 76 and for beginning to apply a tension to the ligaments 80. Movement of the arm 48 upward, as shown in Figure 4 with the knee extended to the 180 position (i.e. surfaces 68 and 82 aligned), applies a tension to the ligaments 80 of the knee structure. A selected desired amount of tension may be applied to the ligaments. hs soon as the proper tension is established, the nut 30 may be loosened and the handle 90 may be removed from its mounting on stud 26. The cutting slots 38 and 40 are selectively positioned according to , -6- ~.41S7~
prior indication by another instrument for the desired position of cut of the condyles 7~ and 76. As soon as the desired cut is provisionally selected, a provisional mark may be made on the condyle, and the knee may then be flexed to thereby disengage the arm 48 from the condylar notch to view the preselected or established marks on the condyles to ascertain the desired depth of cut. The knee may then be moved back to the extended position of 180 of flexion with the ligaments properly tensioned without disturbing the setting of the tensor (screw 52).
The bores 84 in support member 22 are positioned and spaced according to predetermined spacing required between slots 16 of the tibia guide 14 and slots 38 and 40 of the femoral cutting guide. These spacings are predetermined by the indicated size of prosthesis for the knee.
Because the tensioning device is centrally located, (i,e, arm 48 engages center of knee structure) medial and deviation adjustments in the fitting of the knee prosthesis are possible. The tensioning device does not interfere with the process of aligning the load bearing axis of the leg during the performance of the operation.
While I have illustrated and described my invention by means of specific embodiments, it is to be understood that numerous changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
a support frame, first mounting means for mounting said support frame to a tibia; second means for noninvasively engaging a distal end of a femur and means interacting between said first mounting means and second means for moving said second means relative to said first mounting means for tensioning the ligaments in said knee structure, said means interacting comprising:
(a) a threaded hole extending through said second means;
(b) a threaded screw threadably extending through said threaded hole and engagable with said first mounting means;
(c) said second means being constrained from rotation about an axis defined by said threaded hole whereby rotation of said threaded screw with respect to said threaded hole in a first direction tensions said ligaments while rotation of said threaded screw with respect to said threaded hole in a second direction contracts said ligaments.
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects and advantages of the pre-sent invention will become apparent from the following description when read in conjunction with the drawings wherein:
Figure l is a perspective view of a tensor and resector guide in accordance with the invention.
Figure 2 is a rear elevation view of the embodiment of Figure 1.
Figure 3 is a side elevation view of the embodiment of 7~
- 2a - 70751-3 Figure 1 with the tensor in the retracted position.
Figure 4 is a view like Figure 3 showing the tensor in the extended position.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
Turning to the drawings, a combination tensor and resector guide in accordance with the invention is .,~
_3_ ~2~15~
illustrated in use in conjunction with a tibia section guide which is utilized as the base support structure. A
tibia cutting guide includes an elongated shank or bar member 12 having a curved upper end which supports a tibia cutting guide head 14. The cutting guide head is positioned and angled to guide the cutting or resectioning of a tibial plateau for total knee surgery. The cutting guide head 14 includes a transverse cutting guide slot 16.
pair of anchoring pins 18 extend through a pair of spaced apart bores in the cutting guide head 14 for anchoring it to the upper end of a tibia. An ankle guide bracket 20 attached to the lower end of the shank or bar 12 engages the tibia at the ankle for supporting and aligning the tibia cutting guide structure.
The present invention comprises an attachment for attaching to and supporting on the tibia cutting guide,and for applying the proper selected tension to the ligaments of the knee structure during appropriate stages of the ; surgical procedures. The present invention comprises a frame in the form of a generally elongated flat bar member 22 that has a curved upper end which supports a support housing structure 24 to be more specifically described.
The support member 22 includes a plurality of bores 84 and ; an elongated slot 86 for fitting over and adjusting relative to a pair of bolts or studs 26 and 28 supported on the support member 12 and including thumb screws or nuts 30 and 32 for securing the members in position relative to each other.
The support housing structure has a generally T-configurstion with a pair of outwardly extending arms 34 .
.
_4~ 577 and 36 having cutting guide slots 38 and 40 formed therein for guiding the cutting of the femoral condyles. A central upwardly extending support member 24 includes a guide slot 44 in which is mounted a slide member 46 having an outwardly extending arm 98 thereon. The slide member 46 is reciprocably mounted within the slide or guide slot 44 and includes a central threaded bore 50 which is threadably engaged by a threaded screw or shaft 52 which is rotatably mounted within a nonthreaded bore 54 in the vertical support member 42. A head 56 on the upper end of the screw member 52 includes a plurality of radially extending bores 58 for receiving a torque handle 60 for applying torque to the screw. The screw 52 includes a lower end or tip 52a in the form of a pointed or generally conical bearing structure that engages the upper surface of the tibia cutting guide head 14 and is supported axially thereby ,for raising the slide member 46 upon rotation thereof.
The arm 48 extends into the intercondylar notch between the pair of condyles at the end of the femur ~0 (Figure 4) when the leg is in extension for engaging and applying thereto a force for tensioning the ligaments.
pair of laterally spaced bores 60 and 62 are formed in the arm members 34 and 36 and receive a pair of anchoring pins 64 for anchoring the condylar resector guide to the femur.
The central support structure or member 42 is provided with a flat, straight or planar surface 68, which is adapted to lie flat against a preplaned or filed flat surface 82 on the anterior femoral cortex. This surface 82 is prepared to lie parallel to the axis of the femur. The surface 68 extends parallel to the axis of the tibia where ~241S77 the guide assembly 12 is properly mounted on the tibia.
Consequently, when the surfaces 68 and 82 align with each other, the leg is held in absolute 180 of extension.
Referring to Figure 4, the instrument is shown installed in a knee joint structure between a femur 69 and a tibia 70. The arm 48 is shown engaging a notch surface 72 between condyles 74 and 76 on femur 69. The pressure plate 66 mounted in slot 16 of the tibia cutting guide head 14 engages the sectioned surface 78 of the tibia 70.
Extension of the screw 52 spreads the arm 48 and plate 66 apart applying tension to the ligaments 80 (only one of which is shown).
In use, the pressure plate 66 is inserted in the guide slot 16 of the properly mounted tibia cutting guide head 14 and rests on top of the sectioned surface 78 of the tibia as shown in Figure 4. The arm 48 extends outward ! and into engagement with the surface 72 in the condylar slot between the condyles 74 and 76 as shown in figure 4.
Rotation of the threaded shank or screw 52 raises the slide 46 and attached arm 48 upward for engagement with the notch surface 72 between the condyles 74 and 76 and for beginning to apply a tension to the ligaments 80. Movement of the arm 48 upward, as shown in Figure 4 with the knee extended to the 180 position (i.e. surfaces 68 and 82 aligned), applies a tension to the ligaments 80 of the knee structure. A selected desired amount of tension may be applied to the ligaments. hs soon as the proper tension is established, the nut 30 may be loosened and the handle 90 may be removed from its mounting on stud 26. The cutting slots 38 and 40 are selectively positioned according to , -6- ~.41S7~
prior indication by another instrument for the desired position of cut of the condyles 7~ and 76. As soon as the desired cut is provisionally selected, a provisional mark may be made on the condyle, and the knee may then be flexed to thereby disengage the arm 48 from the condylar notch to view the preselected or established marks on the condyles to ascertain the desired depth of cut. The knee may then be moved back to the extended position of 180 of flexion with the ligaments properly tensioned without disturbing the setting of the tensor (screw 52).
The bores 84 in support member 22 are positioned and spaced according to predetermined spacing required between slots 16 of the tibia guide 14 and slots 38 and 40 of the femoral cutting guide. These spacings are predetermined by the indicated size of prosthesis for the knee.
Because the tensioning device is centrally located, (i,e, arm 48 engages center of knee structure) medial and deviation adjustments in the fitting of the knee prosthesis are possible. The tensioning device does not interfere with the process of aligning the load bearing axis of the leg during the performance of the operation.
While I have illustrated and described my invention by means of specific embodiments, it is to be understood that numerous changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A ligament tensor for tensioning the ligaments in a knee structure during-knee surgery, comprising:
a support frame, first mounting means for mounting said support frame to a tibia;
second means for noninvasively engaging a distal end of a femur and means interacting between said first mounting means and second means for moving said second means relative to said first mounting means for tensioning the ligaments in said knee structure, said means interacting comprising:
(a) a threaded hole extending through said second means;
(b) a threaded screw threadably extending through said threaded hole and engagable with said first mounting means;
(c) said second means being constrained from rotation about an axis defined by said threaded hole whereby rotation of said threaded screw with respect to said threaded hole in a first direction tensions said ligaments while rotation of said threaded screw with respect to said threaded hole in a second direction contracts said ligaments.
a support frame, first mounting means for mounting said support frame to a tibia;
second means for noninvasively engaging a distal end of a femur and means interacting between said first mounting means and second means for moving said second means relative to said first mounting means for tensioning the ligaments in said knee structure, said means interacting comprising:
(a) a threaded hole extending through said second means;
(b) a threaded screw threadably extending through said threaded hole and engagable with said first mounting means;
(c) said second means being constrained from rotation about an axis defined by said threaded hole whereby rotation of said threaded screw with respect to said threaded hole in a first direction tensions said ligaments while rotation of said threaded screw with respect to said threaded hole in a second direction contracts said ligaments.
2. The ligament tensor of claim 1 wherein:
said support frame includes a condyle cutting guide for guiding the cutting of the distal femoral condyles.
said support frame includes a condyle cutting guide for guiding the cutting of the distal femoral condyles.
3. The ligament tensor of claim 2 wherein said second means compries a slide member, and an arm carried by said slide member.
4. The ligament tensor of claim 3 wherein said first mount-ing means comprises a tibia cutting guide assembly including an elongated frame member for alignment with the tibia and a cutting guide head for securing adjacent the tibia plateau and a plate mounted in said cutting guide head for engaging a preselected planar surface of the tibia.
5. The ligament tensor of claim 4 wherein said support frame includes an elongated bar slidably mounted on said tibia cutting guide frame, and said arm is movable within said guide independently of said support frame.
6. The ligament tensor of claim 5 wherein said support frame includes an elongated member having a planar alignment sur-face for engaging a prepared flat surface on a femoral condyle for indicating true leg alignment.
7. The ligament tensor of claim 6 where said screw is axially supported on said tibia cutting guide head.
8. The ligament tensor of claim 7 wherein said condyle cutting guide comprises a pair of opposed arms extending outward in opposite directions from said elongated member and including guide slots therein for cutting the distal femoral condyles.
9. The ligament tensor of claim 8 wherein said elongated member includes an elongated rectangular slot and said slide mem-ber is slidably mounted in said slot to thereby constrain rotation of said slide member with respect to said elongated member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US473,066 | 1983-03-07 | ||
| US06/473,066 US4566448A (en) | 1983-03-07 | 1983-03-07 | Ligament tensor and distal femoral resector guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1241577A true CA1241577A (en) | 1988-09-06 |
Family
ID=23878045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000447455A Expired CA1241577A (en) | 1983-03-07 | 1984-02-15 | Tensor distal femoral resector guide |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4566448A (en) |
| CA (1) | CA1241577A (en) |
Families Citing this family (129)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781182A (en) * | 1986-10-03 | 1988-11-01 | Purnell Mark L | Apparatus and method for use in performing a surgical operation |
| US4883048A (en) * | 1986-10-03 | 1989-11-28 | Purnell Mark L | Apparatus and method for use in performing a surgical operation |
| US4739751A (en) * | 1986-10-03 | 1988-04-26 | Temple University | Apparatus and method for reconstructive surgery |
| US4938762A (en) * | 1987-12-16 | 1990-07-03 | Protek Ag | Reference system for implantation of condylar total knee prostheses |
| FR2629339B1 (en) * | 1988-04-01 | 1997-09-12 | Broc Christian | LAYING MATERIAL FOR PARTICULARLY A TIBIAL AND / OR FEMORAL ELEMENT OF A BI-COMPARTMENTAL KNEE JOINT PROSTHESIS |
| US4862881A (en) * | 1988-06-20 | 1989-09-05 | Shea Jr Cyril E | Orthopaedic appliance |
| US4926847A (en) * | 1988-12-27 | 1990-05-22 | Johnson & Johnson Orthopaedics, Inc. | Surgical cutting block |
| FR2648699B1 (en) * | 1989-06-26 | 1993-06-18 | Matco | VERSATILE VIEWFINDER FOR TOTAL SLIDING KNEE PROSTHESIS |
| US5431653A (en) * | 1993-07-06 | 1995-07-11 | Callaway; George H. | Knee joint flexion-gap distraction device |
| US8603095B2 (en) | 1994-09-02 | 2013-12-10 | Puget Bio Ventures LLC | Apparatuses for femoral and tibial resection |
| US5597379A (en) * | 1994-09-02 | 1997-01-28 | Hudson Surgical Design, Inc. | Method and apparatus for femoral resection alignment |
| US5810827A (en) * | 1994-09-02 | 1998-09-22 | Hudson Surgical Design, Inc. | Method and apparatus for bony material removal |
| US5514139A (en) * | 1994-09-02 | 1996-05-07 | Hudson Surgical Design, Inc. | Method and apparatus for femoral resection |
| US5643272A (en) * | 1994-09-02 | 1997-07-01 | Hudson Surgical Design, Inc. | Method and apparatus for tibial resection |
| US6695848B2 (en) | 1994-09-02 | 2004-02-24 | Hudson Surgical Design, Inc. | Methods for femoral and tibial resection |
| US5755803A (en) * | 1994-09-02 | 1998-05-26 | Hudson Surgical Design | Prosthetic implant |
| US5540696A (en) * | 1995-01-06 | 1996-07-30 | Zimmer, Inc. | Instrumentation for use in orthopaedic surgery |
| DE29510204U1 (en) * | 1995-06-23 | 1995-08-31 | Aesculap Ag | Surgical retractor |
| US5735904A (en) * | 1995-07-05 | 1998-04-07 | Pappas; Michael J. | Spacer for establishng prosthetic gap and ligamentous tension |
| US5649929A (en) * | 1995-07-10 | 1997-07-22 | Callaway; George Hadley | Knee joint flexion-gap distraction device |
| FR2737967B1 (en) * | 1995-08-24 | 1997-11-28 | Benoist Girard & Cie | KNEE PROSTHESIS CORRECTION APPARATUS |
| US5733292A (en) * | 1995-09-15 | 1998-03-31 | Midwest Orthopaedic Research Foundation | Arthroplasty trial prosthesis alignment devices and associated methods |
| US5782753A (en) * | 1995-10-20 | 1998-07-21 | United States Surgical Corporation | Surgical retractor |
| FR2742037B1 (en) * | 1995-12-07 | 1999-02-19 | Broutard Jean Claude | DEVICE FOR THE PREPARATION OF BONE CUTS, PARTICULARLY TIBIAL FOR THE APPLICATION OF A KNEE PROSTHESIS |
| WO1997030648A1 (en) * | 1996-02-23 | 1997-08-28 | Midwest Orthopedic Research Foundation | Device and method for distal femur cutting and prothesis measuring |
| GB9611074D0 (en) * | 1996-05-28 | 1996-07-31 | Howmedica | Surgical apparatus |
| US5860980A (en) * | 1997-09-15 | 1999-01-19 | Axelson, Jr.; Stuart L. | Surgical apparatus for use in total knee arthroplasty and surgical methods for using said apparatus |
| AU2001250538A1 (en) * | 2000-04-27 | 2001-11-20 | Finsbury (Development) Limited | Surgical tool |
| WO2002067800A2 (en) * | 2001-02-27 | 2002-09-06 | Smith & Nephew, Inc. | Surgical navigation systems and processes for high tibial osteotomy |
| US7547307B2 (en) | 2001-02-27 | 2009-06-16 | Smith & Nephew, Inc. | Computer assisted knee arthroplasty instrumentation, systems, and processes |
| US20050113846A1 (en) * | 2001-02-27 | 2005-05-26 | Carson Christopher P. | Surgical navigation systems and processes for unicompartmental knee arthroplasty |
| US8062377B2 (en) | 2001-03-05 | 2011-11-22 | Hudson Surgical Design, Inc. | Methods and apparatus for knee arthroplasty |
| US6770077B2 (en) | 2001-05-21 | 2004-08-03 | Nemco Medical, Ltd. | Femoral knee saw guide and method |
| JP2005516724A (en) * | 2002-02-11 | 2005-06-09 | スミス アンド ネフュー インコーポレーテッド | Image guided fracture reduction |
| WO2003071961A1 (en) * | 2002-02-26 | 2003-09-04 | Nemcomed Ltd. | Patella resection guide |
| CA2474967C (en) * | 2002-03-05 | 2009-09-29 | Nemcomed, Inc. | Minimally invasive total knee arthroplasty method and instrumentation |
| US9155544B2 (en) * | 2002-03-20 | 2015-10-13 | P Tech, Llc | Robotic systems and methods |
| DE10215358B4 (en) * | 2002-04-08 | 2007-03-08 | Mathys Medizinaltechnik Ag | Ligament tensioning device with cutting gauge |
| US7329260B2 (en) | 2002-06-28 | 2008-02-12 | Depuy Products, Inc. | Kit, guide and method for locating distal femoral resection plane |
| US7628793B2 (en) * | 2002-07-23 | 2009-12-08 | Ortho Development Corporation | Knee balancing block |
| US7094241B2 (en) * | 2002-11-27 | 2006-08-22 | Zimmer Technology, Inc. | Method and apparatus for achieving correct limb alignment in unicondylar knee arthroplasty |
| US20040172044A1 (en) * | 2002-12-20 | 2004-09-02 | Grimm James E. | Surgical instrument and method of positioning same |
| US20070282347A9 (en) * | 2002-12-20 | 2007-12-06 | Grimm James E | Navigated orthopaedic guide and method |
| US20040153066A1 (en) * | 2003-02-03 | 2004-08-05 | Coon Thomas M. | Apparatus for knee surgery and method of use |
| US7235080B2 (en) * | 2003-02-20 | 2007-06-26 | Zimmer Technology, Inc. | Femoral reference tibial cut guide |
| ES2261812T3 (en) * | 2003-04-25 | 2006-11-16 | Zimmer Gmbh | DEVICE FOR THE PREPARATION OF A FEMORAL CONDILO. |
| JP4231813B2 (en) * | 2003-05-06 | 2009-03-04 | ツィマー ゲーエムベーハー | Traction equipment |
| EP1491166B1 (en) * | 2003-09-15 | 2005-03-02 | Zimmer GmbH | Adjusting device |
| US7862570B2 (en) * | 2003-10-03 | 2011-01-04 | Smith & Nephew, Inc. | Surgical positioners |
| US20050085822A1 (en) * | 2003-10-20 | 2005-04-21 | Thornberry Robert C. | Surgical navigation system component fault interfaces and related processes |
| US7764985B2 (en) * | 2003-10-20 | 2010-07-27 | Smith & Nephew, Inc. | Surgical navigation system component fault interfaces and related processes |
| ES2362491T3 (en) | 2003-11-14 | 2011-07-06 | SMITH & NEPHEW, INC. | ADJUSTABLE SURGICAL CUTTING SYSTEMS. |
| WO2005053559A1 (en) * | 2003-11-25 | 2005-06-16 | Smith & Nephew, Inc. | Methods and apparatuses for providing a navigational array |
| US20050113659A1 (en) * | 2003-11-26 | 2005-05-26 | Albert Pothier | Device for data input for surgical navigation system |
| US7282054B2 (en) * | 2003-12-26 | 2007-10-16 | Zimmer Technology, Inc. | Adjustable cut block |
| US7641661B2 (en) * | 2003-12-26 | 2010-01-05 | Zimmer Technology, Inc. | Adjustable resection guide |
| US9814539B2 (en) * | 2004-01-14 | 2017-11-14 | Puget Bioventures Llc | Methods and apparatus for conformable prosthetic implants |
| US7857814B2 (en) * | 2004-01-14 | 2010-12-28 | Hudson Surgical Design, Inc. | Methods and apparatus for minimally invasive arthroplasty |
| US8021368B2 (en) * | 2004-01-14 | 2011-09-20 | Hudson Surgical Design, Inc. | Methods and apparatus for improved cutting tools for resection |
| US8114083B2 (en) * | 2004-01-14 | 2012-02-14 | Hudson Surgical Design, Inc. | Methods and apparatus for improved drilling and milling tools for resection |
| US7815645B2 (en) * | 2004-01-14 | 2010-10-19 | Hudson Surgical Design, Inc. | Methods and apparatus for pinplasty bone resection |
| US20060030854A1 (en) * | 2004-02-02 | 2006-02-09 | Haines Timothy G | Methods and apparatus for wireplasty bone resection |
| CA2553368A1 (en) * | 2004-01-16 | 2005-08-11 | Smith & Nephew, Inc. | Computer-assisted ligament balancing in total knee arthroplasty |
| US20050159759A1 (en) * | 2004-01-20 | 2005-07-21 | Mark Harbaugh | Systems and methods for performing minimally invasive incisions |
| US20050197569A1 (en) * | 2004-01-22 | 2005-09-08 | Mccombs Daniel | Methods, systems, and apparatuses for providing patient-mounted surgical navigational sensors |
| US8043294B2 (en) * | 2004-03-05 | 2011-10-25 | Wright Medical Technology, Inc. | Reference mark adjustment mechanism for a femoral caliper and method of using the same |
| US7993341B2 (en) | 2004-03-08 | 2011-08-09 | Zimmer Technology, Inc. | Navigated orthopaedic guide and method |
| US8114086B2 (en) * | 2004-03-08 | 2012-02-14 | Zimmer Technology, Inc. | Navigated cut guide locator |
| EP1729665A1 (en) * | 2004-03-31 | 2006-12-13 | Smith and Nephew, Inc. | Methods and apparatuses for providing a reference array input device |
| US20050234465A1 (en) * | 2004-03-31 | 2005-10-20 | Mccombs Daniel L | Guided saw with pins |
| US20050234466A1 (en) * | 2004-03-31 | 2005-10-20 | Jody Stallings | TLS adjustable block |
| US20050228404A1 (en) * | 2004-04-12 | 2005-10-13 | Dirk Vandevelde | Surgical navigation system component automated imaging navigation and related processes |
| US20070287910A1 (en) * | 2004-04-15 | 2007-12-13 | Jody Stallings | Quick Disconnect and Repositionable Reference Frame for Computer Assisted Surgery |
| WO2005104978A1 (en) * | 2004-04-21 | 2005-11-10 | Smith & Nephew, Inc. | Computer-aided methods, systems, and apparatuses for shoulder arthroplasty |
| US20050279368A1 (en) * | 2004-06-16 | 2005-12-22 | Mccombs Daniel L | Computer assisted surgery input/output systems and processes |
| US8167888B2 (en) | 2004-08-06 | 2012-05-01 | Zimmer Technology, Inc. | Tibial spacer blocks and femoral cutting guide |
| US7338499B1 (en) | 2004-09-13 | 2008-03-04 | Howmedia Osteonics Corp. | Hip arthroplasty balancing apparatus and method |
| US7608112B1 (en) | 2004-09-13 | 2009-10-27 | Howmedica Osteonics Corp. | Hip arthroplasty trialing apparatus and method |
| JP2008521574A (en) * | 2004-12-02 | 2008-06-26 | スミス アンド ネフュー インコーポレーテッド | System providing a reference plane for attaching an acetabular cup |
| US20060200025A1 (en) * | 2004-12-02 | 2006-09-07 | Scott Elliott | Systems, methods, and apparatus for automatic software flow using instrument detection during computer-aided surgery |
| US20060161051A1 (en) * | 2005-01-18 | 2006-07-20 | Lauralan Terrill-Grisoni | Method of computer-assisted ligament balancing and component placement in total knee arthroplasty |
| US7927336B2 (en) * | 2005-02-08 | 2011-04-19 | Rasmussen G Lynn | Guide assembly for guiding cuts to a femur and tibia during a knee arthroplasty |
| US8303597B2 (en) | 2005-02-08 | 2012-11-06 | Rasmussen G Lynn | Systems and methods for guiding cuts to a femur and tibia during a knee arthroplasty |
| US8317797B2 (en) | 2005-02-08 | 2012-11-27 | Rasmussen G Lynn | Arthroplasty systems and methods for optimally aligning and tensioning a knee prosthesis |
| AU2006216653B2 (en) | 2005-02-22 | 2012-03-15 | Smith & Nephew, Inc. | In-line milling system |
| GB0519829D0 (en) | 2005-09-30 | 2005-11-09 | Depuy Int Ltd | Distractor instrument |
| GB0519832D0 (en) * | 2005-09-30 | 2005-11-09 | Depuy Int Ltd | Instrument assembly for use in knee joint replacement surgery |
| US20070118055A1 (en) * | 2005-11-04 | 2007-05-24 | Smith & Nephew, Inc. | Systems and methods for facilitating surgical procedures involving custom medical implants |
| US20070149977A1 (en) * | 2005-11-28 | 2007-06-28 | Zimmer Technology, Inc. | Surgical component positioner |
| US7520880B2 (en) | 2006-01-09 | 2009-04-21 | Zimmer Technology, Inc. | Adjustable surgical support base with integral hinge |
| US7744600B2 (en) * | 2006-01-10 | 2010-06-29 | Zimmer Technology, Inc. | Bone resection guide and method |
| US7780671B2 (en) * | 2006-01-23 | 2010-08-24 | Zimmer Technology, Inc. | Bone resection apparatus and method for knee surgery |
| US20080097450A1 (en) * | 2006-09-14 | 2008-04-24 | Zimmer Technology, Inc. | Patella clamp |
| ES2542434T3 (en) | 2006-10-11 | 2015-08-05 | Ignace Ghijselings | Device for installing a femoral prosthetic knee joint |
| EP1958575B1 (en) * | 2007-02-13 | 2014-08-13 | Brainlab AG | Device or system for positioning or preparing the positioning of a medical operating instrument, especially an incision block or a cutting block or a ligament balancing device |
| US20090018544A1 (en) * | 2007-07-13 | 2009-01-15 | Zimmer, Inc. | Method and apparatus for soft tissue balancing |
| EP2123229A1 (en) * | 2008-05-19 | 2009-11-25 | BrainLAB AG | Connecting cutting blocks |
| FR2935092B1 (en) * | 2008-08-25 | 2011-12-16 | Francis Guillaume | ANCILLARY SET TO IMPLEMENT A KNEE PROSTHESIS. |
| US8372080B2 (en) * | 2008-08-26 | 2013-02-12 | Zimmer, Inc. | Trans-cut slot adjustment mechanism |
| US8721568B2 (en) * | 2009-03-31 | 2014-05-13 | Depuy (Ireland) | Method for performing an orthopaedic surgical procedure |
| US8740817B2 (en) * | 2009-03-31 | 2014-06-03 | Depuy (Ireland) | Device and method for determining forces of a patient's joint |
| US8551023B2 (en) | 2009-03-31 | 2013-10-08 | Depuy (Ireland) | Device and method for determining force of a knee joint |
| US8597210B2 (en) * | 2009-03-31 | 2013-12-03 | Depuy (Ireland) | System and method for displaying joint force data |
| GB2475491A (en) * | 2009-11-18 | 2011-05-25 | Biomet Uk Ltd | Alignment tool for a femoral drill guide |
| GB2482702A (en) * | 2010-08-11 | 2012-02-15 | Biomet Uk Healthcare Ltd | Ligament balancer |
| US8747410B2 (en) | 2010-10-26 | 2014-06-10 | Zimmer, Inc. | Patellar resection instrument with variable depth guide |
| GB201115411D0 (en) | 2011-09-07 | 2011-10-19 | Depuy Ireland | Surgical instrument |
| US9522023B2 (en) | 2011-12-09 | 2016-12-20 | Zimmer Gmbh | Orthopedic plate, orthopedic device, method of coupling bone segments, and method of assembling an orthopedic plate |
| DE102012100284A1 (en) | 2012-01-13 | 2013-07-18 | Aesculap Ag | Surgical retraction device |
| US9381011B2 (en) | 2012-03-29 | 2016-07-05 | Depuy (Ireland) | Orthopedic surgical instrument for knee surgery |
| US9545459B2 (en) | 2012-03-31 | 2017-01-17 | Depuy Ireland Unlimited Company | Container for surgical instruments and system including same |
| US10070973B2 (en) | 2012-03-31 | 2018-09-11 | Depuy Ireland Unlimited Company | Orthopaedic sensor module and system for determining joint forces of a patient's knee joint |
| US10206792B2 (en) | 2012-03-31 | 2019-02-19 | Depuy Ireland Unlimited Company | Orthopaedic surgical system for determining joint forces of a patients knee joint |
| DE102013102902A1 (en) | 2013-03-21 | 2014-09-25 | Aesculap Ag | Surgical retraction device |
| NZ715261A (en) * | 2013-05-23 | 2019-02-22 | Kirti Moholkar | Improvements in or relating to assemblies for use in knee replacement surgery |
| US10206696B2 (en) | 2015-01-09 | 2019-02-19 | Danton S. Dungy | Devices and methods for establishing femoral and tibial resection positions in a total knee replacement procedure |
| US11172917B2 (en) | 2015-01-09 | 2021-11-16 | Sterling Innovations, Llc | Devices and methods for establishing femoral and tibial resection positions in a total knee replacement procedure |
| WO2016154606A1 (en) | 2015-03-25 | 2016-09-29 | Marlowe Goble E | Knee instruments and methods |
| US10568650B2 (en) | 2015-03-25 | 2020-02-25 | E. Marlowe Goble | Knee instruments and methods |
| US10271965B2 (en) | 2016-05-10 | 2019-04-30 | Sterling Innovations, Llc | Prosthetic gap references system and method |
| US11266512B2 (en) | 2016-12-22 | 2022-03-08 | Orthosensor Inc. | Surgical apparatus to support installation of a prosthetic component and method therefore |
| US11284873B2 (en) | 2016-12-22 | 2022-03-29 | Orthosensor Inc. | Surgical tensor where each distraction mechanism is supported and aligned by at least two guide shafts |
| US10772641B2 (en) | 2016-12-22 | 2020-09-15 | Orthosensor Inc. | Surgical apparatus having a frame and moving support structure and method therefore |
| US11291437B2 (en) | 2016-12-22 | 2022-04-05 | Orthosensor Inc. | Tilting surgical tensor to support at least one bone cut |
| US11185425B2 (en) | 2016-12-22 | 2021-11-30 | Orthosensor Inc. | Surgical tensor configured to distribute loading through at least two pivot points |
| WO2019022769A1 (en) | 2017-07-28 | 2019-01-31 | Wright Medical Technology, Inc. | Joint osteotomy system and method |
| US11678894B2 (en) | 2017-12-15 | 2023-06-20 | Jonathan P. Cabot | Knee balancing instrument |
| US11234720B2 (en) | 2018-03-07 | 2022-02-01 | E. Marlowe Goble | Knee instruments and methods |
| GB202111783D0 (en) * | 2021-08-17 | 2021-09-29 | Depuy Ireland Ultd Co | Unicondylar balancer and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4220146A (en) * | 1979-01-18 | 1980-09-02 | Cloutier Jean Marie | Biplanar joint distractor |
| US4349018A (en) * | 1980-12-29 | 1982-09-14 | Chambers Gary R | Osteotomy apparatus |
| US4421112A (en) * | 1982-05-20 | 1983-12-20 | Minnesota Mining And Manufacturing Company | Tibial osteotomy guide assembly and method |
| US4457307A (en) * | 1982-08-20 | 1984-07-03 | Stillwell William T | Bone cutting device for total knee replacement |
| US4467801A (en) * | 1983-03-09 | 1984-08-28 | Wright Manufacturing Company | Method and apparatus for shaping a proximal tibial surface |
-
1983
- 1983-03-07 US US06/473,066 patent/US4566448A/en not_active Expired - Fee Related
-
1984
- 1984-02-15 CA CA000447455A patent/CA1241577A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4566448A (en) | 1986-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1241577A (en) | Tensor distal femoral resector guide | |
| US4703751A (en) | Method and apparatus for resecting a distal femoral surface | |
| US5597379A (en) | Method and apparatus for femoral resection alignment | |
| US4524766A (en) | Surgical knee alignment method and system | |
| US5540695A (en) | Osteotomy cutting guide | |
| US4938762A (en) | Reference system for implantation of condylar total knee prostheses | |
| US4567886A (en) | Flexion spacer guide for fitting a knee prosthesis | |
| US5649929A (en) | Knee joint flexion-gap distraction device | |
| US6001106A (en) | System for tensioning ligament grafts | |
| US20110257654A1 (en) | Method and apparatus for femoral resection alignment | |
| US8945132B2 (en) | Device, system and method for positioning or preparing the positioning of a medical operating instrument | |
| US5234433A (en) | Method and instrumentation for unicompartmental total knee arthroplasty | |
| US6575980B1 (en) | Method and apparatus for femoral resection | |
| AU2004201721B2 (en) | An apparatus for the preparation of a femoral condyle | |
| US5688284A (en) | Variable angle drill guide and ligament fixation method | |
| US5916219A (en) | Tibial plateau resection guide | |
| AU755664B2 (en) | Device and method for inserting a prosthetic knee | |
| US8998917B2 (en) | Instrument assembly for use in knee joint replacement surgery | |
| CA2376019C (en) | Tibial plateau resection guide | |
| US4759350A (en) | Instruments for shaping distal femoral and proximal tibial surfaces | |
| WO1998032384A9 (en) | Method and apparatus for femoral resection | |
| US7527630B2 (en) | Apparatus for the preparation of a femoral condyle | |
| AU3543295A (en) | Femoral and tibial resection method and apparatus | |
| WO2007036699A1 (en) | A distractor instrument | |
| US7048742B2 (en) | Insertion instrument for sliding prostheses |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |