Femoral Finishing File
The femoral finishing assembly addresses the challenge of accurately preparing the femur for orthopedic prostheses by using a femoral finishing file and impactor adapter, ensuring precise bone reshaping and compatibility with various prosthetic designs.
Patent Information
- Application Number
- JP2024540947
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-01-06
- Filing Date
- 2022-12-19
- Publication Date
- 2025-01-24
AI Technical Summary
Existing orthopedic surgical instruments face challenges in accurately reshaping and preparing the distal end of the femur for femoral prostheses, particularly in terms of precision and compatibility with different types of knee prostheses, which can vary based on the patient's condition and desired mobility.
A femoral finishing assembly comprising a femoral finishing file and an impactor adapter, which includes specific tooth configurations and connectors to facilitate precise filing and reshaping of the femur, allowing for compatibility with various prosthetic designs and ensuring accurate bone cuts.
The assembly enables precise and efficient reshaping of the femur to fit selected prostheses, supporting a wide range of knee prosthetic options, and facilitating the surgical preparation of the femur for orthopedic procedures.
Smart Images

Figure 2025502077000001_ABST
Abstract
Description
[Technical field]
[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims priority under 35 USC § 365 to U.S. patent application Ser. No. 17 / 569,991, filed Jan. 6, 2022, which is expressly incorporated by reference into this application.
[0002] FIELD OF THEINVENTION The present disclosure relates generally to orthopaedic surgical instruments for performing orthopaedic surgical procedures, and more particularly, to femoral rasps for use on a patient's femur. [Background technology]
[0003] Arthroplasty is a well-known surgical procedure in which diseased and / or damaged natural joints are replaced by artificial joints. A typical knee prosthesis includes, for example, a tibial tray, a femoral component, and a polymer insert or bearing positioned between the tibial tray and the femoral component. Depending on the severity of the damage to the patient's joint, various mobile orthopedic prostheses can be used. For example, the knee prosthesis may include a "fixed" tibial insert when it is desirable to limit the motion of the knee prosthesis, such as when significant soft tissue damage or loss is present. Alternatively, the knee prosthesis may include a "mobile" tibial insert when greater freedom of motion is desired. In addition, the knee prosthesis may be an artificial knee prosthesis designed to replace the femoral-tibial interface of both condyles of the patient's femur, or a unicompartmental (or unicondylar) knee prosthesis designed to replace the femoral-tibial interface of a single condyle of the patient's femur.
[0004] The type of orthopedic knee prosthesis used to replace the patient's natural knee joint may also depend on whether the patient's posterior cruciate ligament is preserved or sacrificed (i.e., removed) during surgery. For example, if the patient's posterior cruciate ligament is damaged, diseased, and / or otherwise removed during surgery, a posterior stabilized knee prosthesis may be used to provide additional support and / or control in posterior degrees of flexion. Alternatively, if the posterior cruciate ligament is intact, a cruciate ligament retaining knee prosthesis may be used.
[0005] To facilitate replacement of a patient's natural joint (e.g., the patient's knee joint) with a corresponding orthopaedic prosthesis, an orthopaedic surgeon may use a variety of orthopaedic surgical instruments, such as, for example, saws, reamers, drills, broaches, impactors, and / or other surgical instruments. In certain circumstances, some bone cuts or resections may be inaccurate or otherwise deviate from the orthopaedic surgical plan due to a variety of factors, including deflection of the saw blade, movement of the cutting block, and / or the relative inclination of the saw blade to the corresponding cutting slot. In such cases, the orthopaedic surgeon may use a bone rasp or file to manually clean and / or sculpt the corresponding bone. Summary of the Invention [Means for solving the problem]
[0006] According to one aspect of the disclosure, a femoral finishing rasp assembly for use in an orthopaedic surgical procedure may include a femoral finishing rasp and an impactor adapter. The femoral finishing rasp may have a body defining an internal cavity configured to receive a distal end of a patient's femur. The body may include an anterior wall having an inner surface facing the internal cavity and an outer surface opposite the inner surface, a posterior wall opposite the anterior wall and having an inner surface facing the internal cavity and an outer surface opposite the inner surface of the posterior wall, a distal wall having an anterior end connected to a distal end of the anterior wall and a posterior end connected to a distal end of the posterior wall, and a connector attached to the outer surface of the distal wall. The inner surface of the anterior wall may include a first set of rasp teeth and the inner surface of the posterior wall may include a second set of rasp teeth. Additionally, the distal wall may include an inner surface facing the internal cavity and an outer surface opposite the inner surface of the distal wall. The impactor adapter can include a first end configured to be coupled to an orthopedic impactor and a second end opposite the first end having a connector configured to selectively couple to a connector of the femoral finishing file.
[0007] In some embodiments, the first set of file teeth and the second set of file teeth are positioned or oriented to face proximally away from the body of the femoral finishing file. In such embodiments, the first set of file teeth and the second set of file teeth may be configured to file the patient's bone in a proximal-distal direction. In other embodiments, the first set of file teeth and the second set of file teeth are positioned or oriented to face distally toward the body of the femoral finishing file.
[0008] In some embodiments, the connector of the femoral rasp may include an inner bracket extending distally from an outer surface of the distal wall and an outer bracket extending distally from an outer surface of the distal wall. In such embodiments, the inner bracket and the outer bracket may be spaced laterally from one another and each of the inner bracket and the outer bracket may include a corresponding opening defined therethrough. The inner bracket opening and the outer bracket opening may be coaxial with one another. In such embodiments, the distal wall may also include an opening defined therethrough and located between the inner bracket and the outer bracket.
[0009] Additionally, in some embodiments, the posterior wall may include an opening defined therethrough and in fluid communication with the opening in the distal wall. In such embodiments, the posterior wall may include a medial posterior wall and a lateral posterior wall spaced laterally from the medial posterior wall by the opening in the posterior wall. The distal wall may also include a plurality of inner surfaces that cooperate to define the opening in the distal wall, and in such embodiments, at least one of the inner surfaces defines a femoral cutting guide. For example, the plurality of inner surfaces of the distal wall may cooperate to define a femoral box cutting guide.
[0010] In some embodiments, the connector of the femoral finishing file may further include a plurality of side walls defining a recess configured to cooperate with the inner and outer brackets to receive the head of the connector of the impactor adapter. Additionally, in some embodiments, the connector of the impactor adapter may include a first tab and a second tab, each of the first tab and the second tab may include a catch. In such embodiments, when the connector of the impactor adapter is coupled to the connector of the femoral finishing file, the catch of the first tab may be received in an opening of the inner bracket of the connector of the femoral finishing file and the catch of the second tab may be received in an opening of the outer bracket of the connector of the femoral finishing file. Additionally, in such embodiments, the first tab and the second tab may be biased outwardly away from one another, and each of the first tab and the second tab may be movable in an inward direction to cause movement of an associated catch from the opening of the corresponding inner and outer brackets to separate the connector of the impactor adapter from the connector of the femoral finishing file.
[0011] In some embodiments, the connector of the impactor adapter may include a pair of tracks, and each of the first and second tabs may be positioned within a corresponding one of the pair of tracks. In such embodiments, the first and second tabs may be movable within the corresponding tracks to couple or decouple the connector of the impactor adapter and the connector of the femoral rasp.
[0012] Additionally, in some embodiments, the femoral finishing rasp may further include a fixation device. In such embodiments, the distal wall of the femoral finishing rasp may include a passageway defined therethrough and the second end of the impactor adaptor may include an opening defined in the second end. The fixation device may be configured to be received through the passageway in the distal wall and into the opening in the second end of the impactor adaptor to secure the femoral finishing ramp to the impactor adaptor.
[0013] According to another aspect of the disclosure, a femoral finishing rasp assembly for use in an orthopaedic surgical procedure may include a femoral finishing rasp and an impactor adapter. The body of the femoral finishing rasp may include a joint side and a rasp side opposite the joint side. The joint side may include a medial femoral condyle surface having a curved contour and a lateral femoral condyle surface having a curved contour and spaced from the medial femoral condyle. The rasp side may include a plurality of surfaces including an anterior rasp surface having a first set of rasp teeth, a medial posterior rasp surface having a second set of rasp teeth, and a lateral posterior rasp surface having a third set of rasp teeth. The impactor adapter may include a first end configured to be coupled to an orthopaedic impactor and a second end opposite the first end and having a connector configured to selectively couple to the joint side of the femoral finishing rasp.
[0014] In some embodiments, the first set of file teeth and the second set of file teeth are positioned or oriented to face proximally away from the body of the femoral finishing file. In such embodiments, the first set of file teeth and the second set of file teeth may be configured to file the patient's bone in a proximal-distal direction. In other embodiments, the first set of file teeth and the second set of file teeth are positioned or oriented to face distally toward the body of the femoral finishing file.
[0015] In some embodiments, the articular side of the femoral finishing rasp may define the femoral trial surface. Additionally, in some embodiments, the impactor adapter may include a shank and a head separate from the shank. The shank may include a first end configured to be coupled to an orthopedic impactor, and the head may include a second end having a connector configured to selectively couple to the articular side of the femoral finishing rasp. In such embodiments, the impactor adapter may further include a fixation device, the head may include a passageway defined therethrough, and the shank may include a mounting end opposite the first end, the mounting end having an opening defined therein. The fixation device may be configured to be received through the passageway of the head and into the opening of the mounting end of the shank to secure the head to the shank.
[0016] Additionally, in some embodiments, the joint side of the body of the femoral finishing file may include a pair of openings defined therein. In such embodiments, the connector of the impactor adapter may include a pair of posts extending outwardly from the head, each post configured to be received in a corresponding one of the pair of openings in the joint side of the femoral finishing file when the impactor adapter is coupled to the femoral finishing file. In some embodiments, each post of the pair of posts may include a ball detent configured to secure the impactor adapter to the femoral finishing file when the post is received in the opening in the joint side of the femoral finishing file.
[0017] According to a further aspect, a method for performing an orthopaedic surgical procedure may include surgically preparing a distal end of a patient's femur, where the surgical preparation includes making at least one bone cut on the patient's femur and assembling a femoral finishing rasp assembly by attaching an impactor adapter to an outer side of a femoral finishing rasp. The femoral finishing rasp may include a rasp side opposite the outer side, where the rasp side of the femoral finishing rasp may include a front side having a first set of rasp teeth and a distal side having a second set of rasp teeth. The method may also include coupling the impactor adapter to an orthopaedic impactor and filing the distal end of the patient's femur using the orthopaedic impactor and the femoral finishing rasp assembly. In some embodiments, filing the distal end of the patient's femur may include filing the distal end of the patient's femur in a proximal-distal direction.
[0018] In some embodiments, attaching the impactor adapter to the lateral side of the femoral finishing file may include manipulating a pair of tabs on the connector of the impactor adapter to position a catch on each tab within an opening in a corresponding bracket on the connector of the femoral finishing file. Additionally, in some embodiments, the lateral side of the femoral finishing file may include a medial femoral condyle surface having a curved contour and a lateral femoral condyle surface having a curved contour and spaced apart from the medial femoral condyle. In such embodiments, the method may further include using the femoral finishing file as a femoral trial during the orthopaedic surgical procedure. [Brief description of the drawings]
[0019] The detailed description makes specific reference to the following drawings: [Figure 1] FIG. 1 is a partially exploded distal perspective view of one embodiment of a femoral rasp assembly including a femoral rasp and an impactor adapter. [Diagram 2] FIG. 2 is a distal perspective view of a femoral finishing file of the femoral finishing file assembly of FIG. 1 . [Diagram 3]FIG. 3 is a side view of the femoral finishing file of FIG. 2. [Figure 4] FIG. 3 is a distal exterior elevational view of the femoral finishing file of FIG. 2. [Diagram 5] FIG. 3 is a proximal internal elevational view of the femoral finishing file of FIG. 2. [Figure 6] FIG. 2 is an exploded perspective view of the impactor adapter of the femoral rasp assembly of FIG. 1; [Figure 7] FIG. 7 is a distal perspective view of the impactor adapter of FIG. [Figure 8] FIG. 7 is a side view of the impactor adapter of FIG. [Figure 9] 2 is a distal perspective view of the femoral rasp assembly of FIG. 1 having an impactor adapter coupled to the femoral rasp. [Figure 10] 10 is a side view of the femoral finishing rasp assembly of FIG. 9 in the process of filing the distal end of a patient's femur. [Figure 11] FIG. 10 is a side view of the femoral rasp assembly of FIG. 9 coupled to an automated impactor. [Figure 12] FIG. 10 is a side view of the femoral rasp assembly of FIG. 9 coupled to a manual impactor. [Figure 13] 13 is a partially exploded distal perspective view of another embodiment of a femoral finishing rasp assembly including a femoral finishing rasp and an impactor adapter. FIG. [Figure 14] 14 is a distal perspective view of the femoral rasp assembly of FIG. 13 having an impactor adapter coupled to the femoral rasp. [Figure 15] FIG. 15 is a side view of the femoral rasp assembly of FIG. 14. [Figure 16] FIG. 15 is a proximal internal elevational view of the femoral finishing rasp assembly of FIG. 14. [Figure 17] FIG. 15 is a distal exterior elevational view of the femoral finishing rasp assembly of FIG. 14. [Figure 18]1 is a partially exploded distal perspective view of a further embodiment of a femoral finishing rasp assembly including a femoral trial finishing rasp and an impactor adapter, the impactor adapter being shown in an unassembled configuration; FIG. [Figure 19] 19 is another partially exploded distal perspective view of the femoral finishing rasp assembly of FIG. 18, with the impactor adapter shown in an assembled configuration. [Figure 20] 20 is a perspective view of the femoral finishing rasp assembly of FIG. 19 having an impactor adapter coupled to a femoral trial finishing rasp; [Figure 21] FIG. 21 is a side view of the femoral rasp assembly of FIG. 20. [Figure 22] FIG. 21 is a distal exterior elevational view of the femoral finishing file of FIG. 20. [Diagram 23] FIG. 21 is a proximal internal elevational view of the femoral finishing file of FIG. 20. [Figure 24A] 1 is a simplified flow diagram of one embodiment of a method for performing an orthopaedic surgical procedure on a patient's femur. [Figure 24B] 1 is a simplified flow diagram of one embodiment of a method for performing an orthopaedic surgical procedure on a patient's femur. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0020] While the concepts of the present disclosure are susceptible to various modifications and alternative forms, specific illustrative embodiments thereof have been shown by way of example in the drawings and are herein described in detail, It should be understood, however, that there is no intention to limit the concepts of the present disclosure to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
[0021] Terms denoting anatomical references, such as anterior, posterior, medial, lateral, superior, inferior, etc., may be used throughout this specification with respect to the orthopedic implants and / or surgical instruments described herein, as well as with respect to the patient's biological anatomy. Such terms have well-understood meanings both in the study of anatomy and in the field of orthopedic surgery. Use of such anatomical reference terms in the written description and claims is intended to be consistent with their well-understood meanings, unless otherwise specified.
[0022] References herein to "one embodiment," "embodiment," "exemplary embodiment," and the like indicate that the embodiment being described may include a particular element, structure, or feature, but not all embodiments necessarily include that particular element, structure, or feature. Moreover, such phrases do not necessarily refer to the same embodiment. Moreover, when a particular element, structure, or feature is described in connection with an embodiment, it is believed to be within the knowledge of one of ordinary skill in the art to implement such element, structure, or feature in connection with other embodiments, whether or not expressly stated. Additionally, it should be understood that an item listed in the format "at least one of A, B, and C" may mean (A), (B), (C), (A and B), (A and C), (B and C), or (A, B, and C). Similarly, an item listed in the format "at least one of A, B, or C" may mean (A), (B), (C), (A and B), (A and C), (B and C), or (A, B, and C).
[0023] In the figures, some structural or method elements may be shown in a particular arrangement and / or order. However, it should be recognized that such a particular arrangement and / or order may not be required. Rather, in some embodiments, such elements may be arranged in a different form and / or order than that shown in the illustrations. Additionally, the inclusion of a structural or method element in a particular figure does not imply that such element is required in all embodiments, and in some embodiments may not be included or may be combined with other elements.
[0024] 1-5, an exemplary femoral finishing rasp assembly 100 includes a femoral finishing rasp 102 and an impactor adapter 104 configured to be coupled to the femoral finishing rasp 102. To do so, a connector 180 of the impactor adapter 104 is coupled or otherwise mated to a corresponding connector 280 of the femoral finishing rasp 102, as described in more detail below. Once assembled in this manner, the impactor adapter 104 may be coupled to an orthopedic impactor and then used to file the distal end of a patient's surgically prepared femur. For example, after a patient's femur has first been surgically prepared by making several bone cuts (e.g., a distal cut, an anterior cut, a posterior cut, and a chamfer cut), an orthopedic surgeon may utilize the femoral finishing rasp assembly 100 to file or reshape the resected femur to a desired size and / or shape to fit a selected femoral prosthesis.
[0025] The femoral finishing rasp 102 may be made from any suitable material having sufficient rigidity to successfully file a patient's bone. For example, the femoral finishing rasp 102 may be made from a metallic material, such as steel or titanium. Alternatively, in some embodiments, the femoral finishing rasp 102 may be embodied as a single-use orthopaedic surgical instrument and formed from a plastic or ceramic material.
[0026] The exemplary femoral finishing rasp 102 includes a body 110 having an interior or rasp side 112 defining an interior cavity 114 sized to receive the distal end of a patient's surgically prepared femur, and an exterior or mounting side 116 opposite the interior side 112. The body 110 includes an anterior wall 120, a posterior wall 122, and a distal wall 124 coupled to the anterior wall 120 and the posterior wall 122. That is, as best shown in FIG. 3, the distal wall 124 includes an anterior end 126 coupled to a distal end 128 of the anterior wall 120, and a posterior end 130 coupled to a distal end 132 of the posterior wall 122. In the exemplary embodiment, the body 110 of the femoral finishing rasp 102 is of unitary construction, although in other embodiments it may be formed as a multi-piece component. For example, the anterior wall 120, the posterior wall 122, and the distal wall 124 may be separable from one another in such embodiments.
[0027] The anterior wall 120 includes an inner surface 134 that faces the femur and an outer surface 136 opposite the inner surface 134. The inner surface 134 of the anterior wall 120 faces the internal cavity 114 and includes a set of anterior file teeth 138. Similarly, the posterior wall 122 includes an inner surface 140 that faces the femur and an outer surface 142 opposite the inner surface 140. The inner surface 140 of the posterior wall 122 also faces the internal cavity 114 and includes a set of posterior file teeth 144. In the exemplary embodiment, as best shown in FIG. 5 , the posterior wall 122 is embodied as an inner posterior wall 146 and an outer posterior wall 148 spaced from the inner posterior wall 146 by an opening 150, each having a respective set of posterior file teeth 144. That is, the posterior wall 122 may include medial sidewalls 152, 154 that define an opening 150 such that the posterior wall 122 includes a "condylar" medial posterior wall 146 and a lateral posterior wall 148. However, in other embodiments, the posterior wall 122 may be solid in the medial-lateral direction and lack the opening 150.
[0028] In the illustrative embodiment, the file teeth 138 on the inner surface 134 of the anterior wall 120 and the file teeth 144 on the inner surface 140 of the posterior wall 122 are oriented to face in a proximal direction (i.e., toward the patient's bone) to facilitate the reciprocating rasp motion provided by the orthopedic impactor. That is, as described below with respect to FIGURE 10, the file teeth 138, 144 of the femoral finishing file 102 are positioned to file the distal end of the patient's surgically-prepared femur in a proximal-distal direction. In other embodiments, the file teeth 138, 144 may be positioned to face in a distal direction.
[0029] Similar to the anterior and posterior walls 120, 122, the distal wall 124 includes a femur-facing inner surface 156 that faces the internal cavity 114, and an outer surface 158 opposite the inner surface 156. However, unlike the anterior and posterior walls 120, 122, the inner surface 156 of the distal wall 124 is devoid of file teeth in the exemplary embodiment. As shown in FIG. 3, the exemplary distal wall 124 includes an anterior chamfer wall 160 and a posterior chamfer wall 162, each of which are angled inwardly from a distal wall section 164. However, in other embodiments, the distal wall 124 may be substantially planar such that the body 110 of the femoral finishing rasp 102 has a substantially rectangular side profile.
[0030] As best shown in FIGS. 4 and 5 , the distal wall 124 of the exemplary femoral finishing rasp 102 includes a number of inner walls 166 that cooperate to define an opening 168 extending through the distal wall 124. In some embodiments, one or more of the inner walls 166 may be embodied as a cutting guide. For example, the inner walls 166 may cooperate to define a posterior stabilizing trochlear box cutting guide to facilitate establishment of a trochlear box cut into the distal end of a patient's femur in some orthopaedic surgical procedures. In the exemplary embodiment, the opening 168 is in fluid communication with the opening 150 in the posterior wall 122 (see, e.g., FIG. 2 ); however, in other embodiments (e.g., those in which the posterior wall 122 lacks the opening 150), the opening 168 may be “closed” to form a passageway through the distal wall 124.
[0031] As discussed above, the body 110 of the femoral finishing rasp 102 includes a connector 180 extending from or otherwise attached to the outer surface 158 of the distal wall 124 of the body 110. The connector 180 of the femoral finishing rasp 102 is configured to mate with a connector 280 of the impactor adapter 104. As best shown in FIG. 2, the exemplary connector 180 is embodied as or otherwise includes an inner bracket 182 and an outer bracket 184, each of which is laterally spaced from the other. In embodiments in which the distal wall 124 includes an opening 168, the opening 168 is located between the brackets 182, 184, as shown in FIG. 2. Each of the brackets 182, 184 is embodied as a "looped" bracket extending distally from the outer surface 158 of the distal wall 124 and having an opening 186, 188, respectively, defined therethrough. The openings 186, 188 are coaxial or otherwise aligned with one another, as best shown in Figures 1, 2, and 3. In some embodiments, as best shown in Figure 2, the connector 180 of the femoral finishing rasp 102 may include several sidewalls, including a medial anterior sidewall 190, a medial posterior sidewall 192, an lateral anterior sidewall 194, and an lateral posterior sidewall 196, each of which extends distally from the distal wall 124 of the body 110. Illustratively, the sidewalls 190, 192, 194, 196 extend a shorter distance from the distal wall 124 relative to the brackets 182, 184 and cooperate with the brackets 182, 184 to define a recess 198 configured (e.g., shaped and sized) to receive a portion of the impactor adapter 104, as described in more detail below.
[0032] 1 and 6-9, the impactor adapter 104 includes an attachment end 600 configured (e.g., shaped and sized) to couple to a manual or automated orthopedic impactor, and a connector end 602 opposite the attachment end 600. The connector end 602 includes a connector 280 configured to couple or mate with the connector 180 of the femoral finishing rasp 102, as described in more detail below. In the exemplary embodiment of FIGS. 1-9, the impactor adapter 104 includes an elongate body 610 including the attachment end 600 and another end 614 opposite the attachment end 600 and coupled to the connector 280.
[0033] 6-8, connector 280 of impactor adapter 104 includes a connector body 620 having a rectangular head 622 and a rectangular base 624 coupled to one another and distally separated from one another by a central wall 626. Illustratively, central wall 626 includes an interior surface that defines a passageway 627 therethrough (see FIG. 6).
[0034] The head 622 and base 624 cooperate to define an inner track 628 on one side of the central wall 626 and an outer track 630. The connector 280 includes an inner tab 640 that is received in the inner track 628 and an outer tab 642 that is received in the outer track 630. Each of the tabs 640, 642 includes a body 650 having a handle 652 that extends away from an outer side 654 of the body 650 and a catch 656 that extends away from the outer side 654 of the body 650. In addition, each of the tabs 640, 642 includes a nub 658 (see FIG. 6 ) that extends away from an inner side 660 of the corresponding tab 640, 642. Additionally, each of the illustrative tabs 640, 642 also includes an inner surface 662 that defines a passageway 664 through the corresponding body 650.
[0035] Tabs 640, 642 are biased away from one another (i.e., outwardly from central wall 626) via a biasing member, illustratively embodied as spring 666. Spring 666 is received within passage 627 of central wall 626 and coupled to each of tabs 640, 642 via respective nubs 658. That is, each of nubs 658 of tabs 640, 642 is received in a corresponding end of spring 666 such that spring 666 may be compressed by sliding tabs 640, 642 inwardly along their corresponding tracks 628, 630, as discussed in more detail below. Each of the tabs 640, 642 is secured within a corresponding track 628, 630 via a corresponding fixed pin 668 which passes through a corresponding passage 670 defined through the head 622 (see FIG. 6), through the passage 644 of the corresponding tab 640, 642, and is received within a corresponding passage 672 defined through the base 624 of the connector body 620 (see FIG. 7).
[0036] As discussed above, the impactor adapter 104 may be coupled to the femoral finishing rasp 102 by coupling the connector 280 of the impactor adapter 104 to the connector 180 of the femoral finishing rasp 102. To do so, in an exemplary embodiment, as shown in Figures 8 and 9, an orthopaedic surgeon (or other user) may press the handles 652 of the tabs 640, 642 toward one another, as indicated by arrow 800, which compresses the springs 666 and causes the tabs 640, 642 to move toward one another within the corresponding tracks 628, 630. As the tabs 640, 642 are moved toward one another, their corresponding catches 656 retract into the connector body 620, as indicated by arrow 802. 9, with the catches 656 of the tabs 640, 642 retracted within the connector body 620, the head 622 of the connector body 620 may be inserted between the inner bracket 182 and the outer bracket 184 and into the recess 198 of the connector 180 of the femoral finishing file 102. When the handles 652 of the tabs 640, 642 are subsequently released while the connector 280 is so positioned, the biasing force of the springs 666 causes the catches 656 to extend outwardly from the connector body 620 and into the openings 186, 188 of the corresponding brackets 182, 184 of the connector 180. In this manner, the impactor adapter 104 may be selectively coupled and decoupled from the femoral finishing file 102.
[0037] 10 , with the impactor adapter 104 coupled to the femoral finishing file 102 to form the femoral finishing file assembly 100, the femoral finishing file assembly 100 may be used to file a surgically prepared distal end 1000 of a patient's femur 1002. To do so, the femoral finishing file is inserted onto the patient's femur 1002 such that the distal end 1000 of the femur 1002 is received within the internal cavity 114 of the body 110 of the femoral finishing file 102 as indicated by arrow 1004. As discussed above, the file teeth 138, 144 of the femoral finishing file 102 are positioned to face proximally (i.e., toward the patient's femur 1002) to file the patient's femur 1002 in a proximal-distal direction.
[0038] As described above, the impactor adapter 104 of the femoral finishing rasp assembly 100 includes a mounting end 600 configured to be coupled to an orthopedic impactor to facilitate filing of the distal end 1000 of a patient's femur 1002. For example, as shown in FIG. 11 , the femoral finishing rasp assembly 100 may be coupled to an automated impactor 1100. To do so, the mounting end 600 may be coupled to a chuck 1102 of the automated impactor 1100 and secured to the chuck 1102 by manipulation of the chuck 1102. Once so coupled, an orthopedic surgeon may operate the automated impactor 1100 in a typical manner to actuate the femoral finishing rasp 102.
[0039] The automated impactor 1100 may be embodied as any type of automated impactor having a chuck that can mate with the mounting end 600 of the impactor adapter 104. For example, in some embodiments, the automated impactor 1100 may be embodied as a component of a Kincise™ surgical automation system available from DePuy Synthes of Warsaw, Indiana. In the illustrated embodiment, the automated surgical impactor 1100 includes an impactor body 1104 having a chuck 1102 and a battery pack 1106. Electrical drive components are housed within the impactor body 1104. The impactor body 1104 further illustratively includes a primary hand grip 1108, an auxiliary hand grip 1110, and a trigger 1112.
[0040] 12, the femoral finishing rasp assembly 100 may be coupled to a manual orthopaedic impactor 1200. To do so, the mounting end 600 of the impactor adapter 104 may be coupled to and secured to a chuck 1202 of the manual impactor 1200. Once so coupled, an orthopaedic surgeon may utilize the manual impactor 1200 to file the distal end 1000 of a patient's femur 1002 in a manner similar to a typical manual rasp.
[0041] 13-17, in another embodiment, the impactor adapter 104 is configured to be secured to the femoral finishing rasp 102 via the use of a fastening device 1300, such as a bolt or screw. In such an embodiment, the opening 168 in the distal wall 124 is embodied as a passageway 1302 extending through the distal wall 124. That is, the passageway 1302 includes an opening 1304 defined on the inner surface 156 of the distal wall 124 and an opening 1306 defined on the outer surface 158. In such an embodiment, the connector 180 of the femoral finishing rasp 102 includes a rim 1308 that surrounds the passageway 1302 and extends distally away from the outer surface 158 of the distal wall 124 to form a receptacle 1310. The connector 280 of the impactor adapter 104 has a similar shape as the receptacle 1310 and is embodied as a nub 1312 sized to be received within the receptacle 1310. That is, in the exemplary embodiment of FIGS. 13-17 , when the impactor adapter 104 is coupled to the femoral finishing rasp 102, the nub 1312 of the connector 280 of the impactor adapter 104 is received within the receptacle 1310 of the connector 180 of the femoral finishing rasp 102.
[0042] To facilitate securement of the impactor adapter 104 to the femoral finishing rasp 102, the nub 1312 includes a threaded opening (not shown) defined on a proximal wall 1314 of the nub 1312 and configured to receive the fixation device 1300. That is, to secure the impactor adapter 104 to the femoral finishing rasp 102, the fixation device 1300 is inserted through the passageway 1302 in the distal wall 124 of the body 110 of the femoral finishing rasp 102 and threaded or otherwise received into the threaded opening in the nub 1312 of the connector 180 of the impactor adapter 104, as shown in FIG. Additionally, as best shown in FIG. 16, the inner surface of the distal wall 124 of the femoral finishing file 102 can include a recess 1600 surrounding the passageway 1302, which is sized to receive the head 1602 (see FIG. 13) of the fixation device 1300 such that the fixation device 1300 is relatively flush with the inner surface 156 of the distal wall 124 when the impactor adapter 104 is secured to the exemplary femoral finishing file 102 of FIGS. 13-17.
[0043] It should be appreciated that the impactor adapter 104 may be embodied as a universal impactor adapter 104 configured to be used with different femoral finishing files 102. For example, in some embodiments, multiple femoral finishing files 102 of different sizes may be provided. In such embodiments, the orthopaedic surgeon may select an appropriate femoral finishing file 102 from the set of femoral finishing files 102, as described above, and couple the impactor adapter 104 to the selected femoral finishing file 102.
[0044] 18-23, in another embodiment, the femoral finishing rasp 102 of the femoral finishing rasp assembly 100 may be embodied as a femoral trial finishing rasp 1802 and the impactor adapter 104 may be embodied as a multi-piece impactor adapter 1804. The femoral finishing rasp assembly 100 shown in and described below with respect to FIGS. 18-23 has similar elements as the femoral finishing rasp assembly 100 described above, and a description of some of these similar elements will be omitted below with the understanding that the above description of such elements is equally applicable to the corresponding elements of the femoral finishing rasp assembly 100 of FIGS. 18-23.
[0045] As best shown in FIG. 18 , the femoral trial finishing rasp 1802 includes a body 1810 having an interior or file side 1812 defining an interior cavity 1814 sized to receive the distal end of a patient's surgically prepared femur, and an exterior or articular side 1816 opposite the file side 1812. Similar to the femoral finishing rasp 102 of FIGS. 1-2, the file side 1812 of the femoral trial finishing rasp 1802 includes an anterior inner surface 1820 having a set of anterior file teeth 1822 and a pair of posterior inner surfaces 1824 (e.g., medial and lateral posterior surfaces) spaced apart from one another by a pulley box housing 1828 and each having a set of posterior file teeth 1826.
[0046] However, unlike the previously described femoral finishing rasp 102, the femoral trial finishing rasp 1802 includes an articular side 1816 that illustratively includes a medial femoral condyle surface 1830 and a lateral femoral condyle surface 1832 spaced apart from one another by an opening 1834 in a pulley box housing 1828 defined in the articular side 1816. Each of the medial and lateral femoral condyle surfaces 1830, 1832 has a curved contour and is embodied as a femoral trial surface configured to articulate on the patient's natural or artificial tibial plateau.
[0047] The body 1810 of the femoral trial finishing rasp 1802 also includes a connector 1890 located on the articular side 1816 of the body 1810 and configured to mate or otherwise mate with a corresponding connector 1892 of the impactor adapter 1804. Illustratively, the connector 1890 is embodied as a pair of openings 1836, each of which is defined in a respective one of the medial and lateral femoral condyle surfaces 1830, 1832 of the articular side 1816.
[0048] The illustrative multi-piece impactor adapter 1804 includes a mounting end 1850 configured (e.g., shaped and sized) to couple to a manual or automated orthopedic impactor, and a connector end 1852 opposite the mounting end 1850. The connector end 1852 includes a connector 1892 configured to couple or mate with a connector 1890 of the femoral trial finishing rasp 1802, as described in more detail below.
[0049] As shown in FIG. 18 , the exemplary impactor adapter 1804 is a multi-piece adapter including an elongated shank 1860 and a head 1862 separate from the shank 1860. The exemplary shank 1860 is substantially similar to the impactor adapter 104 of FIGS. 13-17 and may be used with the femoral finishing rasp 102 described above, as well as the femoral trial finishing rasp 1802 of FIGS. 18-22. The shank 1860 includes an elongated shaft 1864 having an attachment end 1850 and a head end 1866 opposite the attachment end 1850. Similar to the impactor adapter 104 of FIGS. 13-17 , the head end 1866 includes a nub 1868 extending outwardly from a proximal surface 1869 of the head end 1866. The nub 1868 includes a threaded opening (not shown) defined therein.
[0050] The head 1862 of the illustrative impactor adapter 1804 includes a body 1870 having a proximal side 1872 and a distal side 1874 opposite the proximal side 1872. The head 1862 also includes an inner wall 1876 that defines a passageway 1878 through the head 1862. The passageway 1878 includes an opening defined on the distal side 1874 of the head 1862, the opening forming a receptacle 1880 configured to receive the nub 1868 of the elongated shank 1860 when the head 1862 is coupled to the shank 1860. To secure the head 1862 to the shank 1860 of the femoral trial finishing file 1802, a fastening device 1882, such as a bolt or screw, may be engaged through the passage 1878 in the head 1862 and threaded into a threaded opening in a nub 1868 on the elongated shank 1860, which is received in a receptacle 1880 on the head 1862.
[0051] The head 1862 also includes a connector 1892 defined on the proximal side 1872. As discussed above, the connector 1892 is configured (i.e., sized and shaped) to mate or otherwise mate with the connector 1890 of the femoral trial finishing rasp 1802, as shown in FIGS. 19 and 20. Illustratively, the connector 1892 is embodied as a pair of posts 1884 extending away from the proximal side 1872 of the head 1862. The posts 1884 are positioned on the head 1862 such that, when the impactor adapter 1804 is coupled to the femoral trial finishing rasp 1802, each post 1884 is received in a corresponding one of the openings 1836 defined in the medial and lateral femoral condyles 1830, 1832 of the femoral trial finishing rasp 1802. In the illustrative embodiment, each post 1884 includes a ball detent 1886 that is configured to secure the post 1884 within the respective aperture 1836 when the impactor adapter 1804 is coupled to the femoral trial finishing rasp 1802. However, it should be understood that in other embodiments, other mechanisms may be used to secure the impactor adapter 1804 to the femoral trial finishing rasp 1802.
[0052] 24A and 24B, an orthopaedic surgeon may perform a method 2400 for performing an orthopaedic surgical procedure on a patient's femur using the femoral finishing rasp assembly 100 described above. The method 2400 begins at block 2402, where the orthopaedic surgeon surgically prepares the patient's femur. For example, at block 2404, the orthopaedic surgeon may resect and prepare the patient's femur to receive an orthopaedic prosthesis. In doing so, the orthopaedic surgeon may make several bone cuts on the distal end of the patient's femur, including, for example, a distal cut, an anterior cut, a posterior cut, and a chamfer cut.
[0053] After the orthopaedic surgeon surgically prepares the patient's femur at block 2402, the method 2400 proceeds to block 2406 where the orthopaedic surgeon assembles the femoral finishing rasp assembly 100. To do so, at block 2408, the orthopaedic surgeon may select an appropriate femoral finishing rasp 102 from a collection of femoral finishing rasp 102. That is, the orthopaedic surgeon may select a femoral finishing rasp 102 that is appropriately sized for the patient's resected femur.
[0054] Thereafter, in block 2410, the orthopaedic surgeon attaches the impactor adapter 104 to the selected femoral finishing rasp 102. To do so, in the embodiment shown in Figures 1-9, the orthopaedic surgeon may depress the handles 652 of the tabs 640, 642 of the connector 280 of the impactor adapter 104 to retract the catches 656, insert the head 622 of the impactor adapter 104 into the recess 198 of the connector 180, and release the handles 652 to bias the catches 656 outwardly into the openings 186, 188 of the brackets 182, 184 of the connector 180, as best shown in Figures 8 and 9. Alternatively, in the embodiment shown in Figures 13-17, the orthopaedic surgeon may insert the fixation device 1300 through the passageway 1302 in the distal wall 124 of the body 110 of the femoral finishing rasp 102 and thread the fixation device 1300 into the threaded opening in the nub 1312 of the connector 180 of the impactor adapter 104, as shown in Figure 13. Additionally, in the embodiment shown in Figures 18-23, the orthopaedic surgeon may first insert the fixation device 1882 through the passageway 1878 in the head 1862 of the impactor adapter 1804 and thread the fixation device 1882 into the threaded opening in the nub 1868 of the elongated shank 1860, where the nub 1868 is received in the receptacle 1880 of the head 1862, as best shown in Figure 18. The orthopaedic surgeon may then couple the connector 1892 of the impactor adapter 1804 to the connector 1890 of the femoral trial finishing file 1802 by inserting the post 1884 of the head 1862 into the openings 1836 defined in the medial and lateral femoral condyles 1830, 1832 of the femoral trial finishing file 1802, thereby coupling the impactor adapter 1804 to the femoral trial finishing file 1802, as best shown in Figures 19 and 20.
[0055] At block 2412 of the method 2400, the orthopaedic surgeon couples the assembled femoral finishing rasp assembly 100 to an impactor. As mentioned above, the impactor may be embodied as an automatic impactor, such as the automatic impactor 1100 shown and described above with respect to FIG. 11, or as a manual impactor, such as the manual impactor 1200 shown and described above with respect to FIG.
[0056] 24B, block 2414, once the orthopaedic surgeon has assembled the femoral finishing rasp assembly 100 in block 2406 and coupled the assembled femoral finishing rasp assembly 100 to an impactor in block 2412, the orthopaedic surgeon may file the distal end of the patient's femur using the femoral finishing rasp assembly 100 and corresponding impactor. For example, in some embodiments, the orthopaedic surgeon may file the distal end of the patient's femur in a proximal-distal direction using the femoral finishing rasp assembly 100 and an associated reciprocating impactor.
[0057] In some embodiments, during or after the filing procedure of block 2414, the orthopaedic surgeon may make additional cuts to the patient's femur using the femoral finishing rasp 102 as a cutting guide, at block 2416. For example, in embodiments including the femoral finishing rasp 102 of FIGS. 1-9, the orthopaedic surgeon may make a box cut to the distal end of the patient's femur using the inner wall 166 of the distal wall 124 as a box cutting guide, as shown in block 2418. Additionally, in embodiments where the femoral finishing rasp assembly 100 includes the femoral trial finishing rasp 1802 of FIGS. 18-23, the orthopaedic surgeon may use the articular side 1816 of the femoral trial finishing rasp 1802 as a femoral trial, at block 2420. That is, an orthopaedic surgeon may utilize the medial and lateral femoral condyle surfaces 1830, 1832 as femoral trials for the patient's natural or prosthetic tibia to monitor the developing mechanics of the patient's prosthetic knee joint.
[0058] Thereafter, at block 2422, the orthopaedic surgeon may evaluate whether additional filing has been completed. If not, the method 2400 loops back to 2414 where the orthopaedic surgeon may continue to file the distal end of the patient's femur using the femoral finishing rasp assembly 100. In doing so, in some embodiments, the orthopaedic surgeon may use a different size femoral finishing rasp 102 during each iteration, if desired. However, if the patient's femur has been satisfactorily sized and shaped for the corresponding femoral prosthesis, the method 2400 is complete and the orthopaedic surgeon may continue with the orthopaedic surgical procedure.
[0059] While the present disclosure has been illustrated and described in detail in the drawings and foregoing description, it will be understood that such illustration and description are to be regarded as illustrative in nature and not restrictive, and that only illustrative embodiments have been shown and described, and that all changes and modifications that come within the spirit and scope of the present disclosure are desired to be protected.
[0060] The present disclosure has multiple advantages based on various features of the methods, devices, and / or systems described herein. It is noted that alternative embodiments of the methods, devices, and systems of the present disclosure do not include all of the elements described, but still benefit from at least some of the advantages of such elements. Those skilled in the art can easily implement their own methods, devices, and systems that incorporate one or more of the elements of the present invention and are within the spirit and scope of the present disclosure as defined in the appended claims.
[0061] [Embodiment] (1) A femoral finishing rasp assembly for use in orthopaedic surgery, said femoral finishing rasp assembly comprising: 1. A femoral finishing rasp having a body defining an internal cavity configured to receive a distal end of a patient's femur, the body including: (i) an anterior wall having an inner surface facing the internal cavity and an outer surface opposite the inner surface, the inner surface of the anterior wall including a first set of file teeth; (ii) a posterior wall opposite the anterior wall, having an inner surface facing the internal cavity and an outer surface opposite the inner surface of the posterior wall, the inner surface of the posterior wall including a second set of file teeth; (iii) a distal wall having an anterior end connected to a distal end of the anterior wall and a posterior end connected to a distal end of the posterior wall, the distal wall including an inner surface facing the internal cavity and an outer surface opposite the inner surface of the distal wall; and (iv) a connector attached to the outer surface of the distal wall. 1. A femoral finishing rasp assembly comprising: an impactor adapter having a first end configured to be coupled to an orthopedic impactor and a second end opposite the first end having a connector configured to selectively couple to the connector of the femoral finishing rasp. (2) A femoral finishing file assembly as described in embodiment 1, wherein the connector of the femoral finishing file includes an inner bracket extending distally from the outer surface of the distal wall and an outer bracket extending distally from the outer surface of the distal wall, the inner bracket and the outer bracket being laterally spaced from one another, each of the inner bracket and the outer bracket including a corresponding opening defined therethrough, and the opening of the inner bracket and the opening of the outer bracket being coaxial with one another. (3) The femoral finishing file assembly of embodiment 2, wherein the distal wall includes an opening defined therethrough and positioned between the inner bracket and the outer bracket. (4) The femoral finishing file assembly of embodiment 3, wherein the posterior wall includes an opening defined therethrough that is in fluid communication with the opening in the distal wall, the posterior wall comprising an inner posterior wall and an outer posterior wall spaced laterally from the inner posterior wall by the opening in the posterior wall. (5) The femoral finishing file assembly of embodiment 3, wherein the distal wall includes a plurality of inner surfaces that cooperate to define the opening in the distal wall, at least one of the inner surfaces defining a femoral cutting guide.
[0062] (6) The femoral finishing file assembly of claim 5, wherein the inner surfaces of the distal wall cooperate to define a femoral box cutting guide. (7) A femoral finishing file assembly as described in embodiment 2, wherein the connector of the femoral finishing file further includes a plurality of side walls that cooperate with the inner bracket and the outer bracket to define a recess configured to receive a head of the connector of the impactor adapter. (8) A femoral finishing file assembly as described in embodiment 2, wherein the connector of the impactor adapter includes a first tab and a second tab, each of the first tab and the second tab including a catch, and when the connector of the impactor adapter is coupled to the connector of the femoral finishing file, the catch of the first tab is received in the opening of the inner bracket of the connector of the femoral finishing file and the catch of the second tab is received in the opening of the outer bracket of the connector of the femoral finishing file. (9) A femoral finishing file assembly as described in embodiment 8, wherein the first tab and the second tab are biased outwardly away from each other, and each of the first tab and the second tab is movable in an inward direction to cause movement of an associated catch from the opening in the corresponding inner bracket and outer bracket to separate the connector of the impactor adapter from the connector of the femoral finishing file. (10) A femoral finishing file assembly as described in embodiment 11, wherein the connector of the impactor adapter includes a pair of tracks, each of the first tab and the second tab is positioned within a corresponding one of the pair of tracks, and each of the first tab and the second tab is movable within the corresponding track to couple or separate the connector of the impactor adapter and the connector of the femoral finishing file.
[0063] (11) The femoral finishing file assembly of embodiment 1, further comprising a fixation device, wherein the distal wall of the femoral finishing file includes a passage defined therethrough, and the second end of the impactor adapter includes an opening defined in the second end, and wherein the fixation device is configured to be received through the passage in the distal wall and into the opening in the second end of the impactor adapter to secure the femoral finishing ramp to the impactor adapter. (12) A femoral finishing rasp assembly for use in orthopaedic surgery, said femoral finishing rasp assembly comprising: a femoral finishing rasp having a body including an articular side and a rasp side opposite the articular side, the articular side including a medial femoral condyle surface having a curved contour and a lateral femoral condyle surface having a curved contour and spaced from the medial femoral condyle, the rasp side including a plurality of surfaces including an anterior rasp surface including a first set of rasp teeth, a medial posterior rasp surface including a second set of rasp teeth, and a lateral posterior rasp surface including a third set of rasp teeth; 1. A femoral finishing rasp assembly comprising: an impactor adapter having a first end configured to be coupled to an orthopedic impactor and a second end opposite the first end having a connector configured to selectively couple to the joint side of the femoral finishing rasp. (13) A femoral finishing file assembly as described in embodiment 12, wherein the joint side of the femoral finishing file includes a femoral trial surface. (14) The femoral finishing file assembly of claim 12, wherein the impactor adapter comprises a shank and a head separate from the shank, the shank including the first end configured to be coupled to the orthopedic impactor, and the head including the second end having the connector configured to selectively couple to the joint side of the femoral finishing file. (15) The impactor adapter further comprises a fastener, the head including a passageway defined therethrough, the shank including a mounting end opposite the first end, the mounting end having an opening defined therein; A femoral finishing file assembly as described in embodiment 14, wherein the fixation device is configured to be received through the passage of the head and into the opening in the mounting end of the shank to secure the head to the shank.
[0064] (16) The joint side of the body of the femoral finishing file includes a pair of openings defined therein; A femoral finishing file assembly as described in embodiment 14, wherein the connector of the impactor adapter includes a pair of posts extending outwardly from the head, each post being configured to be received within a corresponding one of the pair of openings on the joint side of the femoral finishing file when the impactor adapter is coupled to the femoral finishing file. (17) The femoral finishing file assembly of claim 16, wherein each post of the pair of posts includes a ball detent configured to secure the impactor adapter to the femoral finishing file when the post is received in the opening on the joint side of the femoral finishing file. (18) A method of performing orthopedic surgery, comprising: surgically preparing a distal end of a patient's femur, where surgically preparing the distal end of the patient's femur comprises making at least one osteotomy in the patient's femur; assembling a femoral finishing file assembly by attaching an impactor adapter to an outer side of a femoral finishing file, the femoral finishing file including a file side opposite the outer side, the file side of the femoral finishing file including a front face having a first set of file teeth and a distal face having a second set of file teeth; coupling the impactor adapter to an orthopedic impactor; and filing the distal end of the patient's femur using the orthopaedic impactor and the femoral rasp assembly. (19) The method of embodiment 18, wherein attaching the impactor adapter to the outer side of the femoral file includes manipulating a pair of tabs on a connector of the impactor adapter to position a catch on each tab within an opening in a corresponding bracket on the connector of the femoral file. (20) The outer side of the femoral finishing file includes a medial femoral condyle surface having a curved contour, and a lateral femoral condyle surface having a curved contour and spaced from the medial femoral condyle; 20. The method of claim 18, further comprising using the femoral finishing file as a femoral trial during the orthopaedic surgical procedure.
Claims
1. 1. A femoral finishing rasp assembly for use in orthopaedic surgery, said femoral finishing rasp assembly comprising:
1. A femoral finishing rasp having a body defining an internal cavity configured to receive a distal end of a patient's femur, the body including: (i) an anterior wall having an inner surface facing the internal cavity and an outer surface opposite the inner surface, the inner surface of the anterior wall including a first set of file teeth; (ii) a posterior wall opposite the anterior wall, having an inner surface facing the internal cavity and an outer surface opposite the inner surface of the posterior wall, the inner surface of the posterior wall including a second set of file teeth; (iii) a distal wall having an anterior end connected to a distal end of the anterior wall and a posterior end connected to a distal end of the posterior wall, the distal wall including an inner surface facing the internal cavity and an outer surface opposite the inner surface of the distal wall; and (iv) a connector attached to the outer surface of the distal wall.
1. A femoral finishing rasp assembly comprising: an impactor adapter having a first end configured to be coupled to an orthopedic impactor and a second end opposite the first end having a connector configured to selectively couple to the connector of the femoral finishing rasp.
2. 2. The femoral rasp assembly of claim 1, wherein the connector of the femoral rasp includes an inner bracket extending distally from the outer surface of the distal wall and an outer bracket extending distally from the outer surface of the distal wall, the inner bracket and the outer bracket being laterally spaced from one another, each of the inner bracket and the outer bracket including a corresponding opening defined therethrough, the opening of the inner bracket and the opening of the outer bracket being coaxial with one another.
3. The femoral rasp assembly of claim 2 , wherein a distal wall includes an opening defined therethrough and located between the medial bracket and the lateral bracket.
4. 4. The femoral rasp assembly of claim 3, wherein the posterior wall includes an opening defined therethrough in fluid communication with the opening in the distal wall, the posterior wall comprising a medial posterior wall and a lateral posterior wall spaced laterally from the medial posterior wall by the opening in the posterior wall.
5. The femoral rasp assembly of claim 3 , wherein the distal wall includes a plurality of inner surfaces that cooperate to define the opening in the distal wall, at least one of the inner surfaces defining a femoral cutting guide.
6. The femoral rasp assembly of claim 5 , wherein the inner surfaces of the distal wall cooperate to define a femoral box cutting guide.
7. The femoral rasp assembly of claim 2 , wherein the connector of the femoral rasp further includes a plurality of side walls that cooperate with the inner bracket and the outer bracket to define a recess configured to receive a head of the connector of the impactor adapter.
8. 3. The femoral rasp assembly of claim 2, wherein the connector of the impactor adapter includes a first tab and a second tab, each of the first tab and the second tab including a catch, and when the connector of the impactor adapter is coupled to the connector of the femoral rasp, the catch of the first tab is received in the opening of the inner bracket of the connector of the femoral rasp and the catch of the second tab is received in the opening of the outer bracket of the connector of the femoral rasp.
9. 9. The femoral rasp assembly of claim 8, wherein the first and second tabs are biased outwardly away from one another and each of the first and second tabs is movable in an inward direction to cause movement of an associated catch from the opening in the corresponding inner and outer bracket to separate the connector of the impactor adapter from the connector of the femoral rasp.
10. 2. The femoral rasp assembly of claim 1, wherein the connector of the impactor adapter includes a pair of tracks, each of the first tab and the second tab being positioned within a corresponding one of the pair of tracks, and each of the first tab and the second tab being movable within the corresponding track to couple or decouple the connector of the impactor adapter and the connector of the femoral rasp.
11. 2. The femoral finishing rasp assembly of claim 1, further comprising a fixation device, wherein the distal wall of the femoral finishing rasp includes a passageway defined therethrough and the second end of the impactor adaptor includes an opening defined in the second end, and wherein the fixation device is configured to be received through the passageway in the distal wall and into the opening in the second end of the impactor adaptor to secure a femoral finishing ramp to the impactor adaptor.
12. 1. A femoral finishing rasp assembly for use in orthopaedic surgery, said femoral finishing rasp assembly comprising: a femoral finishing rasp having a body including an articular side and a rasp side opposite the articular side, the articular side including a medial femoral condyle surface having a curved contour and a lateral femoral condyle surface having a curved contour and spaced from the medial femoral condyle, the rasp side including a plurality of surfaces including an anterior rasp surface including a first set of rasp teeth, a medial posterior rasp surface including a second set of rasp teeth, and a lateral posterior rasp surface including a third set of rasp teeth; 1. A femoral finishing rasp assembly comprising: an impactor adapter having a first end configured to be coupled to an orthopedic impactor and a second end opposite the first end having a connector configured to selectively couple to the joint side of the femoral finishing rasp.
13. The femoral rasp assembly of claim 12 , wherein the joint side of the femoral rasp includes a femoral trial surface.
14. 13. The femoral finishing rasp assembly of claim 12, wherein the impactor adapter comprises a shank and a head separate from the shank, the shank including the first end configured to be coupled to the orthopedic impactor, and the head including the second end having the connector configured to selectively couple to the joint side of the femoral finishing rasp.
15. The impactor adapter further comprises a fastener, the head including a passageway defined therethrough, the shank including a mounting end opposite the first end, the mounting end having an opening defined therein; 15. The femoral rasp assembly of claim 14, wherein the locking device is configured to be received through the passage of the head and into the opening in the mounting end of the shank to secure the head to the shank.
16. the joint side of the body of the femoral rasp includes a pair of openings defined therein; 15. The femoral finishing file assembly of claim 14, wherein the connector of the impactor adapter includes a pair of posts extending outwardly from the head, each post configured to be received within a corresponding one of the pair of openings on the joint side of the femoral finishing file when the impactor adapter is coupled to the femoral finishing file.
17. 17. The femoral finishing file assembly of claim 16, wherein each post of the pair of posts includes a ball detent configured to secure the impactor adapter to the femoral finishing file when the post is received in the opening on the joint side of the femoral finishing file.
Citation Information
Patent Citations
Implant systems with fastener for mounting on an articulation surface of an orthopedic joint
EP1550418A1
Apparatus for orthopedic operation of bone
JP1987133948A
Shaping and trial arrangement and repairing guide for transplantation of artificial orthosis for thich bone and its method of application
JP1994133984A
Use of instruments to prepare the femur for a prosthetic knee joint graft and to position the femoral components of the graft.
JP1995507946A
Orthopedic adapter for electropercussion devices
JP2021506406A