Total talus implant and method

Abstract

The talar implant of the present disclosure includes a base having at least one hole and at least one pin. A top portion having at least one hole and at least one pin is configured to be inserted into the base. In at least one embodiment, the tibial implant includes at least one post and at least one base connected thereto. Further, at least one pad connected to the at least one base is selectively removably insertable into the at least one base. Methods of manufacturing the talar and tibial implants are disclosed, as well as methods of inserting the talar and tibial implants into a patient with an injured talar joint.

Description

Technical Field

[0001] (Cross - Reference to Related Applications) This application claims the benefit of priority under 35 U.S.C. § 119(e) of U.S. Provisional Application No. 63 / 068,182, filed on August 20, 2020, and the entire disclosure of that application is hereby incorporated by reference herein.

[0002] The present invention generally relates to general surgery, podiatric surgery, and orthopedic surgery related to joint replacement. More specifically, but not limited thereto, the present invention relates to the replacement of the total talus of the ankle joint.

Background Art

[0003] At least one embodiment is related to a total talus implant, and the implant may be a modular implant. Additionally, at least one embodiment includes a corresponding tibial implant. Further, at least one embodiment includes the step of inserting a talus implant and a tibial implant into a patient.

Summary of the Invention

[0004] At least one embodiment includes a talus implant having a base with at least one hole and at least one pin. Further, the embodiment may include a top with at least one hole and at least one pin, and the top is configured to be inserted into the base. At least one embodiment includes a tibial implant having at least one strut and at least one base connected to the at least one strut. Further, there is at least one pad connected to the at least one base, and the at least one pad is selectively removably insertable into the at least one base.

[0005] A method for inserting talus and tibial implants into a patient is disclosed, comprising determining the extent of damage to the talar joint. The method may include scanning the contralateral joint to generate a mirror image of the contralateral joint. The method may include printing at least one talus implant comprising at least one base and at least one apex as separate components. The method may include printing a tibial implant comprising at least one strut and at least one base. Furthermore, the method may include printing at least one pad configured to be connected to the tibial implant. The method may include surgically exposing the patient's ankle for removal of the damaged talus and portion of the damaged tibia. The method may include inserting and fixing the tibial implant in the patient's tibia, inserting and fixing the base in the patient's ankle, and surgically closing a wound near the patient's ankle. [Brief explanation of the drawing]

[0006] The accompanying drawings are incorporated herein and constitute part thereof, illustrating embodiments of the invention and, together with the detailed description herein, are useful in illustrating the principles of the invention. It is emphasized that, in accordance with standard industry practice, various features are not depicted to scale. In fact, for clarity of discussion, the dimensions of various features can be arbitrarily increased or decreased. The drawings are for illustrative purposes only of preferred embodiments and should not be construed as limiting the invention. [Figure 1] This is a front perspective view of a human foot according to one aspect of the present invention. [Figure 2A] This is a three-dimensional image showing an upper perspective view of the base of a talus implant according to one aspect of the present invention. [Figure 2B] Figure 2A is an upper perspective view of the base of a talus implant according to one aspect of the present invention. [Figure 3A] This is a top perspective view of another embodiment of the base of the talus, as a three-dimensional image, according to one aspect of the present invention. [Figure 3B] This is a downward perspective view of another embodiment of the base of the talus shown in Figure 3A, according to one aspect of the present invention. [Figure 4A] This is an elevation view of the base of the talus implant shown in Figure 3A, according to one aspect of the present invention. [Figure 4B] Figure 3A shows a side view and a front view of the base of the talus bone according to one aspect of the present invention. [Figure 4C] Figure 3A is an upper perspective view of the base of the talus bone according to one aspect of the present invention. [Figure 4D] This is a top view of the base of the talus bone in Figure 3A, according to one aspect of the present invention. [Figure 5] This is a plan cross-sectional view of the talus along line II in Figure 4A, according to one aspect of the present invention. [Figure 6] This is an upper perspective view of another embodiment of the base of the talus according to one aspect of the present invention. [Figure 7A] This is a side view of the base of the talus bone in Figure 6, according to one aspect of the present invention. [Figure 7B] This is a front view of the base of the talus bone in Figure 6, according to one aspect of the present invention. [Figure 7C] Figure 6 is an upper perspective view of the base of the talus bone according to one aspect of the present invention. [Figure 7D] This is a top view of the base of the talus bone shown in Figure 6, according to one aspect of the present invention. [Figure 8] This is a plan cross-sectional view along line II-II in Figure 7A, according to one aspect of the present invention. [Figure 9A] This is a perspective view of a tibial implant and insertion according to one aspect of the present invention. [Figure 9B] This is a side view of an implant base for the talus according to one aspect of the present invention. [Figure 9C] This is an upper perspective view of the apex or crown portion of a talus implant according to one aspect of the present invention. [Figure 9D] This is a downward perspective view of the apex or crown portion of a talus implant according to one aspect of the present invention. [Figure 10]Bottom view of the crown or top of the talus implant according to one aspect of the present invention. [Figure 11] Upper perspective view of the top or crown of the talus implant according to one aspect of the present invention. [Figure 12A] Side view of the tibial strut implant according to one aspect of the present invention. [Figure 12B] Cross-sectional view of the tibial strut implant taken along line A-A of FIG. 12A according to one aspect of the present invention. [Figure 12C] Bottom view of the tibial strut implant according to one aspect of the present invention. [Figure 13A] Another side view of the tibial strut implant according to one aspect of the present invention. [Figure 13B] Side view of the tibial strut implant according to one aspect of the present invention. [Figure 13C] Perspective view of the tibial strut implant according to one aspect of the present invention. [Figure 13D] Bottom view of the tibial strut implant according to one aspect of the present invention. [Figure 14] Perspective view of the tibial strut implant according to one aspect of the present invention. [Figure 15A] Bottom view of the insert of the tibial strut implant according to one aspect of the present invention. [Figure 15B] Side view of the insert of FIG. 15A according to one aspect of the present invention. [Figure 15C] Cross-sectional view of the insert of FIG. 15A taken along line B-B of FIG. 15A according to one aspect of the present invention. [Figure 15D] Side cross-sectional view of the insert of FIG. 15A taken along line A-A of FIG. 15A according to one aspect of the present invention. [Figure 15E] End view of the insert of FIG. 15A according to one aspect of the present invention. [Figure 16] Front view of a foot in which an implant including a talus implant and a tibia with an insert is implanted according to one aspect of the present invention. [Figure 17]This is a flowchart showing the method for manufacturing and implanting a total ankle implant. [Modes for carrying out the invention]

[0007] Generally speaking, this book discloses guides, implants, devices, instruments, systems, and assemblies for achieving bone fusion. Furthermore, it discloses methods for using guides, implants, devices, instruments, systems, and assemblies to achieve joint replacement.

[0008] In this detailed description and the claims set forth below, the terms proximal, distal, anterior or plantar, posterior or dorsal, medial or lateral, superior, and inferior are defined by their standard usage to indicate a particular part or location of bone or implant, in accordance with the criterion of relative arrangement or orientation of natural bone. For example, “proximal” means the part of the device or implant closest to the torso, while “distal” means the part of the device or implant furthest from the torso. With regard to directional terms, “anterior” means the direction toward the front of the human body, and “posterior” means the direction toward the back of the human body. "Medial" means towards the midline of the human body, "lateral" means towards either side of the human body or away from the midline, "superior" means upward direction, and "inferior" means downward direction of an object or structure. Furthermore, in particular with respect to the feet, the term "dorsal" refers to the top of the foot, and the term "planter" refers to the sole of the foot.

[0009] Similarly, location or orientation may be used herein with reference to anatomical structures or surfaces. For example, the bones of the foot, ankle, and lower limb may be used to describe the surface, location, orientation, or direction of implants, devices, instruments, and methods, as described herein with reference to their use in conjunction with the bones of the foot. Furthermore, the implants, devices, instruments, and methods disclosed herein, as well as their embodiments, components, features, etc., are described in relation to one side of the human body for the sake of brevity. However, since the human body is symmetrical or mirror-image relative to the line of symmetry (midline), it is hereby expressly considered that the implants, devices, instruments, and methods described and / or illustrated herein, as well as their embodiments, components, features, etc., may be modified, altered, reconfigured, or otherwise substituted for use or reference on the other side of the human body for the same or similar purposes without departing from the spirit and scope of the invention. For example, the implants, devices, instruments, and methods described herein in relation to the right foot, as well as their embodiments, components, features, etc., may be mirrored so that they function similarly on the left foot. Furthermore, while the implants, devices, instruments, and methods disclosed herein, as well as their embodiments, components, and features, are described in relation to the foot for the sake of simplicity, it should be understood that the implants, devices, instruments, and methods may be used with other bones of the human body that have similar structures.

[0010] Referring to the drawings, similar reference numerals are used to indicate similar components throughout several drawings. Figure 1 is a front view of the foot including the tibia 2, fibula 3, talus 4, and navicular bone 5. At least one embodiment of the present invention is Figure 2A, which is a perspective view of the base of a talus implant in a three-dimensional image. The base 10 of the talus implant includes a body portion 11 and pins or supports 12, 13, 14, 15. Also present together with the head 18 are a central hole 16 and a neck portion 17.

[0011] Figure 2B is a perspective view of the base of the talus implant shown in Figure 2A. This figure shows the apex 11 with pins or posts 12, 13, 14, 15, together with the central hole 16, neck 17, and head 18. This design is configured to receive the head or crown into the talus implant.

[0012] Figure 3A is a top perspective view showing another embodiment of the talus base as a three-dimensional model. In this design, there is a body portion 21, a apex portion 22, and a base having three pins or supports 23.1, 23.2, 23.3, 23.4. A central hole 28 is also present in the apex portion 22. An additional set of holes 24, 25 is configured to receive pins, while another set of holes 26, 27 is configured to receive pins to fix the base within the human body and near the bone.

[0013] Figure 3B is a lower perspective view showing another embodiment of the talus base shown in Figure 3A. In this figure, the base 30, the support 39, and the opening 24.1 are illustrated. The opening 24.1 extends to a hole 24. In addition, the base head surface also has additional openings 26.1 and 27.1. These openings allow a pin to pass through and extend, fixing the talus base near the component.

[0014] Figures 4A, 4B, 4C, and 4D show the base of the talus implant of Figure 3A, which includes the top surface 22 and pins 23.1, 23.2, 23.3, and 23.4 together with the main body 21. Holes 24, 25, 26, 27, and 28 are configured to receive pins or inserts, and the base surface 22.1 includes extended cylindrical holes 26.1 and 27.1. In addition, a support column 29 extends and protrudes from the bottom surface.

[0015] Figure 5 is a plan cross-sectional view of the talus along line II in Figure 4A. Holes 28, 24, and 25 are shown in this figure. Hole 28 extends downward through the central region of the talus body, while holes 24 and 25 extend across the extension of hole 28.

[0016] Figure 6 is a perspective view of another embodiment of the base of the talus 31. This embodiment has a top surface 34, a plurality of pins or projections 33.1, 33.2, 33.3, 33.4 and a plurality of holes 35, 36, 37. The holes 36, 37 are located in front of the neck region adjacent to the head 38.

[0017] Figures 7A, 7B, 7C, and 7D show multiple pins / posts 33.1, 33.2, 33.3, and 33.4 extending upward from the top surface 34 of the main body 32. Hole 35 is located on the top surface 34 of the main body 32. In addition, additional holes 36 and 37 are located on the main body. body It extends within 32.

[0018] Figure 8 is a top view of the base along the line II-II in Figure 7A. This figure shows holes 37 and 36 extending across the main body 32. As shown in Figure 7D, this extension crosses hole 35.

[0019] Figure 9A is a side view of a tibial implant 40 having a support 41 covered with a mesh or screen 41.1. This mesh or screen may be in the form of a honeycomb mesh or screen with variable porosity. The holes in the screen are larger in the outer region of the mesh and smaller near the support. Holes 43, 44, 45, and 46 are located within the support 41. The support 41 extends downward toward a base 42. The base 42 has a flange 47 configured to receive an insert 60. The insert 60 is inserted into the support 41, fixed to the flange 47, and locked in place by a locking mechanism 48.

[0020] Figure 9B is a side view of a base implant for the talus, which may be any of the talus implants 10, 20, or 30 having one of the bases 11, 21, or 31. The bases 11, 21, or 31 may have one of the struts 29 or 39 covered with a mesh such as mesh 29.1 or 39.1.

[0021] Figure 9C is an upward perspective view of a apical or coronal implant 50 for the talus, the implant having dome-shaped portions 57, 58. The lower portion of the coronal portion 50 includes holes 52, 53, 54, 55, and a support 56 extends downward from the lower portion 51. The support 56 (shown in Figure 6D) is configured to fit into holes such as hole 16, hole 28, or hole 35. The holes 52, 53, 54, 55 are configured to receive pins or supports 12, 13, 14, 15, or pins or supports 23.1, 23.2, 23.3, 23.4, or pins or supports 33.1, 33.2, 33.3, 33.4.

[0022] Figure 10 is a bottom view of the coronal or apex portion of a talus implant, showing the base 51 and holes 52, 53, 54, and 55 together with the support 56. The support 56 is frustoconical. The support 56 is formed in a conical or substantially conical shape, with the base widening relative to the apex.

[0023] Figure 11 is a top view of the apex of a talar coronal implant 50, the implant having two different crests positioned on this apex.

[0024] Figure 12A is a side view of a tibial stud implant for the tibia, where the stud 41 includes holes 43, 44, 45, and 46 together with a base 42. The base 42 has a flange 47 that forms a slot for a pad.

[0025] Figure 12B is a lateral section view of a tibial stud implant for the tibia, along line AA of Figure 12A, showing the openings 43, 44, 45, and 46 of the stud 41. The base 42 includes a flange 47 for receiving a pad. Figure 12C is a bottom view of the tibial stud implant. This figure shows the flange 47 along with a lock 48 for securing a pad such as a pad 60.

[0026] Figures 13A, 13B, 13C, and 13D are alternative side and bottom views of the tibial support implant 41. The implant has holes 43, 44, 45, and 46 together with the base 42. A slot 47 is also shown. In particular, Figure 13D also shows the lock 48.

[0027] Figure 14 is a perspective view of a tibial support implant 41. The implant includes a base 42 along with holes 43, 44, 45, and 46.

[0028] Figure 15A is a bottom view of an insert or pad 60 for a tibial stud implant, the pad may include a slot 67, a lock 61, and a bottom surface 66. Figure 15B is a side view of an insert for a tibial stud implant 60, the insert also includes a posterior end 63, anterior end 64, a curved upper surface 62, and a apical surface 65. Figure 15C is a cross-sectional view showing a flange 66 extending outward from the bottom surface to form the slot 67. Figure 15D is a side view shown along line AA, showing the posterior end 64, anterior end 64, and apical surface 62. Figure 15E is an end view showing the bottom 66 along with the slot 67, lock 61, and end surface 65.

[0029] Figure 16 is a front view showing the tibial implant 40 together with the pad 60. The tibial bases 10, 20 and / or 30 are located within the ankle, as shown in the figure, together with the navicular bone 5 positioned near the talus bases 10, 20, and 30, and in the same manner as the apex 50.

[0030] Figure 17 shows the tibia. implantsThis is a flowchart of the method for manufacturing and implanting a talus implant into a patient. For example, the process begins in S1, where a doctor or medical professional scans the injured joint, such as the talus. Next, in S2, the medical professional may scan the contralateral joint. In S3, the medical professional may generate a mirror image of the contralateral joint. This is done by essentially taking a picture of the injured area of ​​the opposite joint and the corresponding area of ​​the contralateral joint. In this case, if the entire talus and the tibia are injured, the entire talus is scanned and a mirror image of the contralateral talus is generated. A portion of the contralateral tibia may also be scanned and generated. In S4, a base design, such as design 10, 20, or 30, is generated. In S5, a top design, such as design 50, is generated. In S6, the tibial stud implant is manufactured or printed. This type of tibial stud implant 40 can be inserted into the patient's tibia. When printing the tibial stud, mesh 41.1 may be printed around the tibial stud 41. In S7, a tibial pad may be printed. In S8, a healthcare worker creates a wound in the patient's ankle. In S9, the injured talus is removed from the patient. In S10, a healthcare worker cleans and prepares the patient's tibia. In S11, a healthcare worker may assemble the tibial stud implant with the tibial pad. In S12, a healthcare worker may insert the tibial stud implant and pad. In S13, a healthcare worker may assemble the talus and talar corona, and in S14, insert the talus and talar corona into the space of the ankle. In S15, a healthcare worker may close the wound.

[0031] As described above, the various components associated with this implant enable a modular assembly of the talar post implant 40, pad 60, apex 50, and talar base 10, 20, 30. Therefore, medical professionals have some flexibility in assembling the appropriate implant for the patient, even during surgery.

[0032] Therefore, although at least one embodiment of the present invention has been shown and described, it should be understood that it may be modified and altered without departing from the spirit and scope of the invention as defined in the appended claims.

[0033] Without departing from the scope of this disclosure, modifications, additions, or omissions may be made to the systems, apparatus, and methods described herein. For example, the components of the systems and apparatus may be integrated or separate. Furthermore, the operation of the systems and apparatus disclosed herein may be performed by more, fewer, or other components, and the methods described herein may include more, fewer, or other steps. Furthermore, the steps may be performed in any suitable order. As used herein, “each” refers to each member of a set or each member of a subset of a set. The terms used herein are intended solely to describe specific embodiments and are not intended to limit the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural form unless the context explicitly indicates otherwise. It will be further understood that the terms “comprise” (including any form of “comprise,” such as “comprises” or “comprising”), “have” (including any form of “have,” such as “has” or “having”), “include” (including any form of “include,” such as “includes” or “including”), and “contain” (including any form of “contains” or “containing”) are open-ended linking verbs. As a result, a method or apparatus that “comprises,” “haves,” “includes,” or “contains” one or more steps or elements may have one or more steps or elements, but is not limited to having only one or more steps or elements. Similarly, an element of a step or apparatus that “comprises,” “haves,” “includes,” or “contains” one or more features may have one or more features, but is not limited to having only one or more features. Furthermore, an apparatus or structure configured in a particular way may be configured in at least that way, but is not limited to being configured in a way that is not listed.

[0034] To assist readers of the Patent Office and any patents issued in this application in interpreting the claims attached herein, the applicant would like to note that none of the attached claims or claim elements are intended to be subject to Section 112(f) of the U.S. Patent Act, except where the terms “means for” or “steps for” are expressly used in a particular claim.

[0035] While certain advantages have been listed above, various embodiments may not include some or all of the listed advantages.

Claims

1. A base having a top surface, each of which has at least one hole and at least one pin provided on the top surface, A top portion having a bottom surface, each of which has at least one hole and at least one pin provided on the bottom surface, Equipped with, The top portion is configured to be inserted into the base portion, When the top surface of the base and the bottom surface of the top are brought together for insertion of the top into the base, the hole in the base is configured to receive the pin of the top, and the hole in the top is configured to receive the pin of the base. Talus implant.

2. The at least one hole is located in the central region of the base. The talus implant according to claim 1.

3. It further comprises at least one additional hole configured to receive at least one pin or a post for fixing the base to the bone of the patient's limb, The talus implant according to claim 1.

4. The base of the at least one pin comprises a plurality of pins. The talus implant according to claim 1.

5. The at least one hole in the top portion comprises a plurality of holes, The plurality of holes in the top portion are configured to receive the plurality of pins in the base portion. The talus implant according to claim 4.

6. The at least one hole in the top portion comprises a plurality of holes. The talus implant according to claim 1.

7. The aforementioned top portion comprises at least one dome-shaped portion, The talus implant according to claim 1.

8. The aforementioned top portion comprises at least two dome-shaped sections. The talus implant according to claim 7.

9. The pin provided on the bottom surface of the top is formed in the shape of a truncated cone. The talus implant according to claim 8.

10. The base comprises a plurality of holes, each including at least one hole extending through the central region of the base, and at least one additional hole extending substantially intersecting the at least one hole. The talus implant according to claim 1.

11. The base further comprises a mesh region, the mesh region having variable pores, and the mesh region extends across a portion of the outer surface of the base. The talus implant according to claim 1.

12. The mesh region extends across the at least one pin on the base. The talus implant according to claim 11.

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