Shoulder implant with adaptable baseplate

Abstract

A shoulder implant system (1000) may include a post (200) configured to be implanted at least partially within the shoulder of a patient. The post can include a convex surface (214) along a portion of the length of the post. The shoulder implant system may include a baseplate (100). The baseplate can be configured to contact the surface of a patient's shoulder. The baseplate can have a concave opening (160) configured to engage the convex surface of the post. The baseplate can tilt along at least one direction with respect to the longitudinal axis of the post.

Description

SHOLD.035WO PATENT DEVICES, SYSTEMS, AND METHODS OF USING AN ADAPTABLE BASEPLATEBACKGROUNDField

[0001] Shoulder replacement is a commonly performed medical procedure for treatment of osteoarthritis, rheumatoid arthritis, certain deformities related to oncological indications, and / or trauma. One type of articulation available to surgeons for treatment is reverse articulation or reverse shoulder replacement. In a reverse shoulder replacement, the articular surface is reversed in that the metallic ball is rigidly fixed to the glenoid fossa of the scapula, and the concave articular surface is rigidly fixed to the humeral bone, thereby reversing the fashion of articulation of the prosthesis.

[0002] Certain reverse shoulder replacement procedures have been used by surgeons, but there remains a need for an improved device, system, and method of performing reverse articulation procedures.SUMMARY

[0003] The present disclosure recognizes problems with existing devices and methods used in reverse articulation procedures.

[0004] For purposes of summarizing the disclosure, certain aspects, advantages, and novel features / fixtures are discussed herein. It is to be understood that not necessarily all such aspects, advantages, or features / fixtures will be embodied in any particular embodiment of the disclosure, and an artisan would recognize from the disclosure herein myriad combinations of such aspects, advantages, or features / fixtures.

[0005] Various implementations of systems, methods, and devices within the scope of the appended claims each have several aspects, no single one of which is solely responsible for the desirable attributes described herein. Without limiting the scope of the appended claims, the description below describes some prominent features.

[0006] Details of one or more implementations of the subject matter described in this specification are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that relative dimensions of the following figures may not be drawn to scale.

[0007] One concern relates to the methods used to manufacture reverse articulation devices. For example, a reverse articulation device that requires extensive work to scan the shoulder of a patient, prepare a 3-dimensional (3D) model of the shoulder, and utilize a 3D printer to manufacture a baseplate (also referred to as a fixation plate) that perfectly matches the contour and deformation of the native surface of the patient’s glenoid, can be time consuming and costly.

[0008] Another concern relates to the complexity of surgical procedures. For example, surgical operation of baseplates to a patient’s bone can be complicated. Certain manufacturing error(s) and / or imperfection(s) could also result in further complications. Advantageously, the devices and methods disclosed in the present disclosure can allow surgeons to utilize an adaptable baseplate that can be manufactured using off-the-shelf components, thus facilitating a fast and inexpensive manufacturing process. Furthermore, the adaptable baseplate of the present disclosure can adapt to the surface of the patient’s glenoid, thus simplifying the surgical operation of this device.

[0009] Another concern relates to the impact of reverse shoulder replacement procedures on a patient’s body. For example, techniques that require the surgeon to ream the surface of the glenoid and create a pocket to allow for insertion of the baseplate can be disruptive to the patient. Advantageously, the devices and methods disclosed in the present disclosure enable the surgeon to utilize an adaptable baseplate without the need to create a pocket to insert the baseplate, thus minimizing the impact of the surgery on the patient.

[0010] Another concern relates to the method of placing a fixation plate (or a baseplate) in the glenoid of a patient. A fixation plate (or a baseplate) that needs to be inset in the patient’s glenoid may require reaming the glenoid surface and involve complicated procedures. The baseplate of the present disclosure does not need to be inset in the patient’s glenoid, thus eliminating unnecessary reaming and complicated installation procedures. Furthermore, the baseplate of the present disclosure can be coupled to the glenoid at the surface, thus eliminating additional material that would otherwise be required to bond the baseplate in a reamed pocket had the baseplate been inset.

[0011] Another concern relates to the techniques that are used to determine the amount of reaming that needs to be performed in a reverse shoulder replacement operation. The devices and methods disclosed in the present disclosure can utilize software and guidesystems to determine depth, position, and / or trajectory of the hole that needs to be reamed in the patient’s glenoid.

[0012] In some embodiments, the techniques described herein relate to a shoulder implant post. The shoulder implant post can include an elongate body. The elongate body can include an elongate portion configured to be implanted at least partially within the shoulder of a patient. The shoulder implant post can also include an elliptical portion. The elliptical portion can be coaxially aligned with the elongate portion. The elliptical portion can be configured to be positioned at least partially above a surface of the shoulder when the elongate portion is implanted therein.

[0013] In some embodiments, the techniques described herein relate to a shoulder implant post, wherein the elongate body can include a central lumen.

[0014] In some embodiments, the techniques described herein relate to a shoulder implant post, wherein the elongate body can include internal threads.

[0015] In some embodiments, the techniques described herein relate to a shoulder implant post, wherein the post includes an upper portion and a lower portion.

[0016] In some embodiments, the techniques described herein relate to a shoulder implant post, wherein the upper portion can include a hexagonal surface or an octagonal surface.

[0017] In some embodiments, the techniques described herein relate to a shoulder implant post, wherein the elongate body can include external threads.

[0018] In some embodiments, the techniques described herein relate to a shoulder implant post, wherein the elongate portion can be cylindrical.

[0019] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the elliptical portion can include a spherical surface.

[0020] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the elliptical portion can be configured to create a ball joint.

[0021] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the elliptical portion can include a convex surface.

[0022] In some embodiments, the techniques described herein relate to a shoulder implant baseplate. The shoulder implant post can include: a bottom surface configured to contact a surface of a patient's shoulder, a top surface positioned opposite the bottom surface,and a central opening extending from the top surface to the bottom surface. The opening can have a concave side wall extending around at least a portion of the circumference of the opening. The opening can be located in a central region of the baseplate.

[0023] In some embodiments, the techniques described herein relate to a shoulder implant baseplate, wherein the central opening can extend around the entire circumference of the shoulder implant baseplate.

[0024] In some embodiments, the techniques described herein relate to a shoulder implant baseplate, wherein the opening can be along a central axis of the baseplate.

[0025] In some embodiments, the techniques described herein relate to a shoulder implant baseplate, wherein the bottom surface and / or the top surface can be planar.

[0026] In some embodiments, the techniques described herein relate to a shoulder implant baseplate that can further include a plurality of anchoring openings. The plurality of anchoring openings can extend around the central opening. Each anchoring opening can be configured to receive an anchor to secure the shoulder implant baseplate to the surface of the patient's shoulder.

[0027] In some embodiments, the techniques described herein relate to a shoulder implant baseplate, wherein the plurality of anchoring openings can include an internal threaded surface.

[0028] In some embodiments, the techniques described herein relate to a shoulder implant baseplate, wherein one or more of anchoring openings can include a coupler.

[0029] In some embodiments, the techniques described herein relate to a shoulder implant baseplate, wherein the plurality of anchoring openings can be positioned in opposing pairs.

[0030] In some embodiments, the techniques described herein relate to a shoulder implant that can include a post, configured to be implanted at least partially within the shoulder of a patient. The post can include a convex surface along a portion of a length of the post. The shoulder implant can include a baseplate, configured to contact a surface of a patient's shoulder. The baseplate can have a concave opening configured to engage the convex surface of the post.

[0031] In some embodiments, the techniques described herein relate to a shoulder implant that can include: a post, having an elongate body and configured to be implanted at least partially within the shoulder of a patient, the post including a longitudinal axis; and abaseplate. The baseplate can be configured to surround the post. The baseplate can be configured to tilt along at least one direction with respect to the longitudinal axis of the post.

[0032] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the baseplate can be configured to rotate about the longitudinal axis.

[0033] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the baseplate can be configured to tilt along a plurality of directions.

[0034] In some embodiments, the techniques described herein relate to a method of implantation of a shoulder implant. The method can include: reaming a cavity into a glenoid surface; inserting a shoulder implant post into the glenoid cavity, the shoulder implant post including the shoulder implant post with an elongate portion and a spherical portion; positioning a baseplate around the shoulder implant post, the baseplate including a plurality of anchoring openings and a coupler; inserting a screw to tighten the coupler such that an angle of the baseplate relative to the post is generally fixed; and placing one or more screws in the plurality of anchoring openings to secure the baseplate to the glenoid.

[0035] In some embodiments, the techniques described herein relate to a shoulder implant. The shoulder implant can include a post. The post can be configured to be implanted at least partially within the shoulder of a patient. The post can include a convex surface. The convex surface can be positioned along a portion of a length of the post. The shoulder implant can include a baseplate. The baseplate can be configured to contact a surface of a patient's shoulder. The baseplate can have an opening. The opening of the baseplate can be a concave opening configured to engage the convex surface of the post.

[0036] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the post includes an elongate body. The elongate body can include a central lumen.

[0037] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the elongate body includes internal threads.

[0038] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the post includes an upper portion and a lower portion.

[0039] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the upper portion includes a hexagonal surface or an octagonal surface.

[0040] In some embodiments, the techniques described herein relate to a shoulder implant, where the elongate body includes external threads.

[0041] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the elongate body is cylindrical.

[0042] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the post includes an elliptical portion. The elliptical portion can include a spherical surface.

[0043] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the elliptical portion is configured to form a ball joint.

[0044] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the baseplate includes an opening. The opening can extend around an entire circumference of the baseplate.

[0045] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the opening is along a central axis of the baseplate.

[0046] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the baseplate includes a bottom surface and a top surface. The bottom surface and / or the top surface can be planar.

[0047] In some embodiments, the techniques described herein relate to a shoulder implant, further including one or more anchoring openings extending around the opening of the baseplate. Each anchoring opening can be configured to receive an anchor to secure the baseplate to the surface of the patient's shoulder.

[0048] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the one or more anchoring openings include an internal threaded surface.

[0049] In some embodiments, the techniques described herein relate to a shoulder implant, wherein one or more of the one or more anchoring openings include a coupler.

[0050] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the one or more anchoring openings are positioned in a non-concentric arrangement and / or are in opposing pairs.

[0051] In some embodiments, the techniques described herein relate to a shoulder implant. The shoulder implant can include a post. The post can have an elongate body. The post can be configured to be implanted at least partially within the shoulder of a patient. Thepost can include a longitudinal axis. The shoulder implant can include a baseplate. The baseplate can be configured to surround the post. The baseplate can tilt about the post along at least one direction with respect to the longitudinal axis of the post.

[0052] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the baseplate is configured to rotate about the longitudinal axis of the post.

[0053] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the baseplate is configured to tilt in a plurality of directions.

[0054] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the elongate body includes a central lumen.

[0055] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the elongate body includes internal threads.

[0056] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the post includes an upper portion and a lower portion.

[0057] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the upper portion includes a hexagonal surface or an octagonal surface.

[0058] In some embodiments, the techniques described herein relate to a shoulder implant, where the elongate body includes external threads.

[0059] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the elongate body is cylindrical.

[0060] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the post includes an elliptical portion, the elliptical portion including a spherical surface.

[0061] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the post includes an elliptical portion. The elliptical portion can be configured to form a ball joint.

[0062] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the baseplate includes an opening. The opening can extend around an entire circumference of the baseplate.

[0063] In some embodiments, the techniques described herein relate to a shoulder implant. The shoulder implant can include an opening. The opening can be along a central axis of the baseplate.

[0064] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the baseplate includes a bottom surface and a top surface. The bottom surface and / or the top surface can be planar.

[0065] In some embodiments, the techniques described herein relate to a shoulder implant, further including one or more anchoring openings. The one or more anchoring openings can extend around a central opening. Each anchoring opening can be configured to receive an anchor to secure the baseplate to a surface of the patient's shoulder.

[0066] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the one or more anchoring openings include an internal threaded surface.

[0067] In some embodiments, the techniques described herein relate to a shoulder implant, wherein one or more of the one or more anchoring openings include a coupler.

[0068] In some embodiments, the techniques described herein relate to a shoulder implant, wherein the one or more anchoring openings are positioned in a non-concentric arrangement and / or are in opposing pairs.BRIEF DESCRIPTION OF THE DRAWINGS

[0069] FIG. 1 illustrates a perspective view of a shoulder implant system, including a baseplate and a post.

[0070] FIG. 2 illustrates a baseplate used in the shoulder implant system according to some embodiments of the present disclosure.

[0071] FIG. 3 A illustrates a top view of a baseplate used in the shoulder implant system according to some embodiments of the present disclosure.

[0072] FIG. 3B illustrates a bottom view of a baseplate used in the shoulder implant system according to some embodiments of the present disclosure.

[0073] FIG. 4A illustrates a side view of a baseplate used in the shoulder implant system according to some embodiments of the present disclosure.

[0074] FIG. 4B illustrates another side view of a baseplate used in the shoulder implant system according to some embodiments of the present disclosure.

[0075] FIG. 5 illustrates a perspective view of a post used in the shoulder implant system according to some embodiments of the present disclosure.

[0076] FIG. 6A illustrates another perspective view of a post used in the shoulder implant system according to some embodiments of the present disclosure.

[0077] FIG. 6B illustrates a cross-sectional view of a post used in the shoulder implant system according to some embodiments of the present disclosure.

[0078] FIG. 7 illustrates a side view of a post used in the shoulder implant system according to some embodiments of the present disclosure.

[0079] FIG. 8A illustrates a top view of a post used in the shoulder implant system according to some embodiments of the present disclosure.

[0080] FIG. 8B illustrates a bottom view of a post used in the shoulder implant system according to some embodiments of the present disclosure.

[0081] FIG. 9A illustrates a post partially inserted in a baseplate in the shoulder implant system according to some embodiments of the present disclosure.

[0082] FIG. 9B illustrates a tilted baseplate against a post in the shoulder implant system according to some embodiments of the present disclosure.

[0083] FIG. 10A illustrates a post inserted in a baseplate, and a fastener positioned above a coupler according to some embodiments of the present disclosure.

[0084] FIG. 10B illustrates a post inserted in a baseplate, and a fastener inserted in the coupler according to some embodiments of the present disclosure.

[0085] FIG. 11 illustrates a perspective view of a shoulder implant system, including a baseplate and a post according to another embodiment of the present disclosure.

[0086] FIG. 12 illustrates a baseplate used in the shoulder implant system according to some embodiments of the present disclosure.

[0087] FIG. 13A illustrates a top view of a post used in the shoulder implant system according to some embodiments of the present disclosure.

[0088] FIG. 13B illustrates a bottom view of a post used in the shoulder implant system according to some embodiments of the present disclosure.

[0089] FIG. 14A illustrates a side view of a baseplate according to some embodiments of the present disclosure.

[0090] FIG. 14B illustrates another side view of a baseplate according to some embodiments of the present disclosure.

[0091] FIG. 15 illustrates a perspective view of a post used in the shoulder implant system according to some embodiments of the present disclosure.

[0092] FIG. 16 schematically illustrates a glenoid of a patient with a reamed cavity according to some embodiments of the present disclosure.DETAILED DESCRIPTION

[0093] FIG. 1 illustrates a perspective view of a shoulder implant system 1000. The shoulder implant system 1000 can be used in a variety of surgical operations, including a reverse shoulder replacement operation. The shoulder implant system 1000 can include a baseplate 100 and a post 200. The baseplate 100 and the post 200 can be manufactured from a variety of materials and using a variety of techniques (e.g., plastic, nitinol, 3D-printed, etc.) and include different properties (e.g., rigid, flexible, etc.). In some aspects, the baseplate 100 and the post 200 can include off-the-shelf products that are readily available to users (e.g., patients, surgeons, etc.). The baseplate 100 can be manufactured in different dimensions. For example, the thickness of the baseplate 100 can vary (e.g., can be thinner or thicker) to accommodate the user’s needs. As illustrated in FIG. 1, the post 200 can be inserted in the baseplate 100. The concave portion of the post 200 can cooperate with the convex portion of the baseplate 100. Advantageously, this arrangement allows the baseplate 100 to rotate about the post 200. In some aspects, the baseplate 100 can be adaptable. For example, the baseplate 100 can rotate against the post 200 to adapt itself to the surface of a patient’s glenoid.

[0094] FIG. 2 illustrates the baseplate 100 that is used in the shoulder implant system 1000. The baseplate 100 can have a body, such as a plate body 120, and one or a plurality of anchoring openings 150 (e.g., an anchoring opening 150a) spaced apart along the peripheral side edge of the plate body 120. The plurality of anchoring openings 150 can extend radially outward from the center of the baseplate 100.

[0095] The plate body 120 can have an annular ring that defines a central opening through an aperture 160. The aperture 160 can include a concave inner surface 164. The plate body 120 can include an upper surface 122 and a lower surface 124. The upper surface 122 can be generally parallel with the lower surface 124. The upper surface 122 and / or the lower surface 124 can be generally planar. In some aspects, the upper surface 122 and / or the lower surface 124 can be a machined surface. The plurality of anchoring openings 150 can include one or more (e.g., 4, 6, 8, etc.) anchoring openings. The plurality of anchoring openings can include round (e.g., circular) openings that have a central axis 150x. In some aspects, thecentral axis 150x of the plurality of anchoring openings 150 can be generally parallel with a central axis 160x of the aperture 160. In some aspects, the central axis 150x and the central axis 160x are not parallel. For example, the central axis 150x and the central axis 160x are offset by an angle of about 5 degrees or about 10 degrees or other appropriate values. The plurality of anchoring openings 150 can receive a fastener (e.g., a screw, anchor, etc.). The plurality of anchoring openings 150 can include a threaded surface 151 which cooperates with the fastener (not illustrated in FIG. 2 but see FIG. 10A-B) to secure the baseplate 100 to the glenoid of the patient.

[0096] Still referring to FIG. 2, the baseplate 100 can include a coupler 170, including a first anchoring port 172 and a second anchoring port 174. The first anchoring port 172 can be a lower port, and the second anchoring port 174 can be an upper port. The first anchoring port 172 and the second anchoring port 174 can be spaced apart by a gap G. In some examples, the gap G can be about 0.5mm. The second anchoring port 174 can be positioned on top of the first anchoring port 172. In some aspects, the first anchoring port 172 and the second anchoring port 174 are eccentric and / or can include a pair of eccentric openings. For example, an axis extending through the center of the first anchoring port 172 is offset from an axis extending through the center of the second anchoring port 174. The interior surface of the first anchoring port 172 and / or the second anchoring port 174 can include different textures (e.g., smooth, threaded, etc.). In some aspects, the plate body 120 does not include a continuous body. For example, a first side 123 and a second side 125 of the plate body 120 are not continuously connected to one another. The coupler 170 can accommodate coupling the first side 123 of the plate body 120 to the second side 125. In some aspects, the first side 123 and the second side 125 are symmetrical. While FIG. 2 illustrates only one coupler 170, the baseplate 100 can include more than one coupler. In some aspects, the baseplate 100 can include two or more couplers. For example, a second coupler can be positioned opposite the coupler 170 such that the first side 123 and the second side 125 are secured to one another through two couplers (i.e., the coupler 170 and a second coupler opposite the coupler 170).

[0097] FIG. 3A illustrates a top view of the baseplate 100 used in the shoulder implant system 1000. As discussed above, the aperture 160 can define an opening that includes a round (e.g.. spherical) inner surface. In some aspects, the baseplate 100 can include one or a plurality of indents, such as an upper indent 126 that is positioned between the plurality ofanchoring openings 150 and the plate body 120. The upper indent 126 can function as a relief cut to enable the plurality of anchoring openings 150 to flex and / or bend with respect to the plate body 120 of the baseplate 100. In some aspects, the plurality of anchoring openings 150 can be manufactured from nitinol (instead of or in addition to titanium) which can facilitate flexing and / or bending of the plurality of anchoring openings 150 with respect to the plate body 120. Each anchoring opening in the plurality of anchoring openings 150 can move and / or flex independent of one another. Advantageously, this can enable the baseplate 100 to better adapt itself to the glenoid surface of the patient without having to ream the glenoid surface.

[0098] FIG. 3B illustrates a bottom view of the baseplate 100 used in the shoulder implant system 1000, including the lower surface 124. The baseplate 100 can include a lower indent 128 between the plurality of anchoring openings 150 and the plate body 120. Similar to the upper indent 126, the lower indent 128 can enable the plurality of anchoring openings 150 to flex with respect to the plate body 120 of the baseplate 100 to allow the baseplate 100 to better adapt to the surface of the glenoid of the patient.

[0099] FIGS. 4A-4B illustrate a side view of the baseplate 100 used in the shoulder implant system 1000. In some aspects, the first side 123 and the second side 125 can join at the coupler 170. The coupler 170 can receive a fastener 300 (see FIG. 10A-10B), which can mate with the threads of the first anchoring port 172 and the second anchoring port 174 to couple the first side 123 to the second side 125. In some aspects, the gap G is larger in a first stage before the fastener 300 is inserted and applied (e.g., before a screw is tightened) in the coupler 170 than a second stage after the fastener 300 is applied in the coupler 170.

[0100] FIG. 5 illustrates a perspective view of the post 200 used in the shoulder implant system 1000. The post 200 can include a lower portion 202 and an upper portion 204. The post 200 can be manufactured from a variety of materials and in different dimensions. In one example, the post 200 can be plastic. In one example, the post 200 can include a depth D of between about 10 mm to about 25 mm. The post 200 can mate and / or removably interface with the baseplate 100.

[0101] FIG. 6A is another perspective view of the post 200 used in the shoulder implant system 1000. The lower portion 202 can include an elongate portion 212. The upper portion 204 can include an elliptical portion 214 and a polygonal surface 216. In some aspects, the elongate portion 212 can have a cylindrical shape and be configured to be inserted at leastpartially in a reamed cavity in the patient’s glenoid. Although the example of FIG. 6 A illustrates a cylindrical surface, this is not intended to be limiting. The elongate portion 212 can include other shapes and / or features that enables it to be inserted into and / or be housed by a receiving end of the glenoid cavity to secure the shoulder implant system 1000 to the glenoid of the patient.

[0102] Still referring to FIG. 6A, the elongate portion 212, the elliptical portion 214, and the polygonal surface 216 can be coaxial. In some aspects, the exterior surface of the elongate portion 212 can include indents (e.g., include threads, channels, ribs, grooves, roughness, etc.) to engage with the interior of the reamed glenoid cavity and / or accommodate additional bonding material (e.g., cement, adhesive, etc.) between the exterior surface of the post 200 and the interior surface of the reamed glenoid cavity. In some aspects, the elongate portion 212 is press-fit into the glenoid cavity. In some aspects, the elongate portion 212 is a central screw, which in some aspects can include a locking nut.

[0103] As discussed above, the upper portion 204 can include the polygonal surface 216. In one example, the polygonal surface 216 includes an octagonal surface. Although an octagonal surface is illustrated in FIG. 6A, this is not intended to be limiting, and the polygonal surface 216 can also include other polygonal surfaces (e.g., a hexagonal surface). The polygonal surface 216 can be configured to receive a glenoid sphere of different dimensions (e.g., 33mm, 36mm, 39mm, etc.). In some aspects, the glenoid sphere can be press fitted on the polygonal surface 216. The elliptical portion 214 can include a spherical outer surface and / or include a convex surface. In some aspects, the elliptical portion 214 can cooperate with the concave inner surface 164 (illustrated in FIG. 2) to form a ball joint. The elliptical portion 214 can be coaxially aligned with the elongate portion 212. In some aspects, the elliptical portion 214 can be positioned at least partially above a surface of the shoulder when the elongate portion 212 is implanted in the shoulder of a patient.

[0104] With continued reference to FIG. 6A, while the elliptical portion 214 is illustrated as a sphere, the elliptical portion 214 does not have to be a complete sphere. For example, two opposing sides of the elliptical portion 214 can be truncated. As a result, the movement of the baseplate 100 is restrained in said truncated sides of the elliptical portion 214, and the baseplate 100 moves and / or tilts about an axis that passes through the truncated sides. In some aspects, it may be desirable to place the baseplate 100 in the post 200 prior topositioning the baseplate-post assembly in the bone of the patient. Advantageously, the elliptical portion 214 with truncated side(s) can accommodate this arrangement and enables the user to move and tilt the baseplate 100 until the user achieves the desired angle, at which point the user can place the baseplate-post assembly as deep as required in the bone. In some aspects, the baseplate 100 is constrained to tilt up and down with respect to the post 200 about an axis that is perpendicular to the longitudinal axis of the post 200. Rotational orientation of the baseplate 100 with respect to the patient’s glenoid is achieved by rotating the baseplate 100 and the post 200 together with respect to the patient’s glenoid.

[0105] FIG. 6B illustrates a cross-sectional view of the post 200. The post 200 can include a central lumen 220 that extends through the post 200 from the upper portion 204 to the lower portion 202. In some aspects, the interior surface of the post 200 through the central lumen 220 can be threaded. For example, the interior surface of the post 200 that corresponds to the elongate portion 212 can include a threaded surface 213.

[0106] FIG. 7 illustrates a side view of the post 200 used in the shoulder implant system 1000. FIG. 8 A illustrates a top view, including the upper portion 204. FIG. 8B illustrates a bottom view of the post used in the shoulder implant system 1000, including the lower portion 202.

[0107] FIG. 9A illustrates the post 200 partially inserted in the baseplate 100 in the shoulder implant system 1000. As illustrated, the post 200 can be deployed in the aperture 160. In one example, the diameter of the elongate portion 212 is smaller than the diameter of the aperture 160, which can enable the elongate portion 212 to pass through the aperture 160. The diameter of the elliptical portion 214 can be the same as or similar to the aperture 160, which can enable the baseplate 100 to rest against the exterior surface of the elliptical portion 214.

[0108] FIG. 9B illustrates the baseplate 100 tilted against the post 200 in the shoulder implant system 1000. As illustrated, the convex surface of the elliptical portion 214 can engage with the concave inner surface 164. In some aspects, this can form a ball joint that enables the baseplate 100 to rotate against the post 200.

[0109] FIG. 10A illustrates the post 200 inserted in the baseplate 100, and a fastener 300 positioned above a coupler 170. As discussed above, the coupler 170 can be eccentric (e.g., not concentric) such that an axis extending through the first anchoring port 172 is offsetfrom an axis extending through second anchoring port 174. The fastener 300 can include a variety of different shapes and / or sizes. In some aspects, the fastener is a screw (e.g., a 4.5mm screw, a 6.0mm screw, etc.). In some aspects, the fastener 300 can be a truncated driver. In some aspects, the fastener 300 can be a screw having a specially designed head with an undersurface that can be configured to align (e.g., center) the first anchoring port 172 and the second anchoring port 174 as a result of engagement of the undersurface with the first and / or second anchoring ports 172, 174 as the fastener 300 is inserted into and secured to the first and / or second anchoring ports 172, 174. The head of the fastener 300 can include a tapered undersurface, and / or be conical, round, etc. In some aspects, the fastener 300 can be a screw that is driven with a tool. The fastener 300 can include an exterior surface that is threaded (e.g., a threaded screw) or it can be unthreaded (e.g., a peg, a post, etc.). In some aspects, the fastener 300 can be configured to pass through the first anchoring port 172, the second anchoring port 174, and penetrate the adjacent bone.

[0110] Referring now to FIG. 10B, once the fastener 300 is applied (e.g., tightens) in the coupler 170, the first anchoring port 172 and the second anchoring port 174 can realign themselves relative to each other, and the first anchoring port 172 and the second anchoring port 174 can become concentric. Advantageously, once the fastener 300 is applied in the coupler 170, a hoop stress is created in the elliptical portion 214, which can lock (e.g., partially or completely) the angle of the baseplate 100 relative to the post 200. For example, the fastener 300 can lock the angle of the baseplate 100 relative to the post 200 at an angle of about 5 degrees, or about 10 degrees, or about 15 degrees, or other desired values (relative to a plane extending perpendicular to the longitudinal axis of the post). Similarly, each or all individual anchoring openings in the plurality of anchoring openings 150 can rotate and / or be locked such that a central axis extending through the openings of the plurality of anchoring openings 150 is offset at a desired angle relative to the post 200.

[0111] FIGS. 11-15 illustrate a shoulder implant system 1000’. The shoulder implant system 1000’ can include a baseplate 100’ and a post 200’. In some embodiments, as illustrated in FIG. 14A, the baseplate 100’ can include an augmented surface 124a’ that is oriented at an angle (e.g., about 30 degrees) relative to a plane parallel to a lower surface 124’. The baseplate 100’ can have a side surface 125’. The side surface 125’ of the baseplate 100’ can be manufactured to different shapes and / or textures. For example, the side surface 125’can be flat, curved, concave, convex, etc. and / or a combination of different shapes. In some aspects, the side surface 125’ can include a porous mesh metal to facilitate better integration with the bone. In some aspects, the baseplate 100’ can include a custom 3D-printed surface. In some aspects, the inferior surface of the baseplate 100’ can be coated and / or include one or more pores with coating. In some aspects, the baseplate 100’ can be manufactured from a plurality of pieces integrated to one another to form the baseplate 100’. For example, the baseplate 100’ can include a top piece that is generally flat coupled to a bottom piece that is custom-made based on the user’s need. In some aspects, the baseplate 100’ can include a flat piece on top and one or more washers between the backside of the baseplate 100’ and the bone of the patient.

[0112] It is noted that the shoulder implant system 1000’ can include any or all features of the shoulder implant system 1000. Similarly, the shoulder implant system 1000 can include any or all features of the shoulder implant system 1000’.Example Use of the Shoulder Implant System in an Operation

[0113] A surgeon can surgically place the shoulder implant system 1000 in a patient’s shoulder. The following describes some of the non-limiting steps (in any appropriate order) that can be performed to implement the shoulder implant system 1000 in the body of the patient. Prior to placement of the shoulder implant system 1000, a glenoid surface 410 of the glenoid 400 (see FIG. 16) can be prepared so that it can receive the shoulder implant system 1000. In some aspects, the glenoid surface 410 of the patient is reamed to create a reamed hole 420. The reamed hole 420 can include a variety of shapes (e.g., circular, oval, etc.) and can include a variety of different depths. The reamed hole 420 can have a depth that can match, substantially match, or be the same size, smaller, or larger than the depth D of the post 200. The reamed hole 420 can be a central distal extending hole which can be configured to receive the post 200. The post 200 can be placed in the reamed hole 420 that is created on the glenoid surface of the patient. In some aspects, about 10% or about 20% or about 100% (or any other appropriate value) of the post can be inset in the prepared reamed hole 420. The surgeon can place the baseplate 100 over the glenoid surface 410 that has been prepared to receive the shoulder implant system 1000.

[0114] As discussed above, the convex surface of the elliptical portion 214 can cooperate with the concave surface of the concave inner surface 164 to enable the surgeon totilt and adjust the baseplate 100 to a desired angle. Once the surgeon determines the desired angle of the baseplate 100, the surgeon can insert the fastener 300 in the hole of the first anchoring port 172 and the second anchoring port 174 in the coupler 170. As the fastener 300 tightens, the first anchoring port 172 and the second anchoring port 174 can become generally concentric, the plurality of anchoring openings 150 flex and / or bend down to the surface of the bone, and the angle of the baseplate 100 is locked relative to the post 200. In some aspects, the fastener 300 can go past the first anchoring port 172 and penetrate the bone of the glenoid surface 410. Additional fasteners 300 can be inserted through one or all of the ports of the plurality of anchoring openings 150 to cinch down the baseplate 100 against the bone of the glenoid 400.

[0115] Although certain aspects and features of the present disclosure are described herein with respect to utilizing the devices, systems, and methods of the present disclosure in the context of a reverse shoulder replacement operation, the scope of the present disclosure is not limited to the reverse shoulder replacement operation. Furthermore, the use of the shoulder implant system of the present disclosure is not limited to a left hand or a right hand. Accordingly, the shoulder implant system of the present disclosure can be used on a left shoulder or a right shoulder or both.

[0116] While certain embodiments of the invention have been described, these embodiments have been presented by way of example only and are not intended to limit the scope of the disclosure. Indeed, the novel methods and systems described herein may be embodied in a variety of other forms. Furthermore, various omissions, substitutions and changes in the systems and methods described herein may be made without departing from the spirit of the disclosure. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the disclosure. Accordingly, the scope of the present inventions is defined only by reference to the appended claims.

[0117] Features, materials, characteristics, or groups described in conjunction with a particular aspect, embodiment, or example are to be understood to be applicable to any other aspect, embodiment or example described in this section or elsewhere in this specification unless incompatible therewith. All of the features disclosed in this specification (including any accompanying claims, abstract, and drawings), and / or all of the steps of any method orprocess so disclosed, may be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive. The protection is not restricted to the details of any foregoing embodiments. The protection extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract, and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

[0118] Furthermore, certain features that are described in this disclosure in the context of separate implementations can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations, one or more features from a claimed combination can, in some cases, be excised from the combination, and the combination may be claimed as a subcombination or variation of a subcombination.

[0119] Moreover, while operations may be depicted in the drawings or described in the specification in a particular order, such operations need not be performed in the particular order shown or in sequential order, or that all operations be performed, to achieve desirable results. Other operations that are not depicted or described can be incorporated in the example methods and processes. For example, one or more additional operations can be performed before, after, simultaneously, or between any of the described operations. Further, the operations may be rearranged or reordered in other implementations. Those skilled in the art will appreciate that in some embodiments, the actual steps taken in the processes illustrated and / or disclosed may differ from those shown in the figures. Depending on the embodiment, certain of the steps described above may be removed, others may be added. Furthermore, the features and attributes of the specific embodiments disclosed above may be combined in different ways to form additional embodiments, all of which fall within the scope of the present disclosure. Also, the separation of various system components in the implementations described above should not be understood as requiring such separation in all implementations, and it should be understood that the described components and systems can generally be integrated together in a single product or packaged into multiple products.

[0120] For purposes of this disclosure, certain aspects, advantages, and novel features are described herein. Not necessarily all such advantages may be achieved in accordance with any particular embodiment. Thus, for example, those skilled in the art will recognize that the disclosure may be embodied or carried out in a manner that achieves one advantage or a group of advantages as taught herein without necessarily achieving other advantages as may be taught or suggested herein.

[0121] Conditional language, such as “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements, and / or steps. Thus, such conditional language is not generally intended to imply that features, elements, and / or steps are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without user input or prompting, whether these features, elements, and / or steps are included or are to be performed in any particular embodiment.

[0122] Conjunctive language such as the phrase “at least one of X, Y, and Z,” unless specifically stated otherwise, is otherwise understood with the context as used in general to convey that an item, term, etc. may be either X, Y, or Z. Thus, such conjunctive language is not generally intended to imply that certain embodiments require the presence of at least one of X, at least one of Y, and at least one of Z.

[0123] Language of degree used herein, such as the terms “approximately,” “about,” “generally,” and “substantially” as used herein represent a value, amount, or characteristic close to the stated value, amount, or characteristic that still performs a desired function or achieves a desired result. As an example, in certain embodiments, the terms “generally parallel” and “substantially parallel” refer to a value, amount, or characteristic that departs from exactly parallel by less than or equal to 15 degrees. 10 degrees. 5 degrees. 3 degrees, 1 degree, or 0.1 degree.

[0124] The scope of the present disclosure is not intended to be limited by the specific disclosures of preferred embodiments in this section or elsewhere in this specification, and may be defined by claims as presented in this section or elsewhere in this specification or as presented in the future. The language of the claims is to be interpreted broadly based on the language employed in the claims and not limited to the examples described in the presentspecification or during the prosecution of the application, which examples are to be construed as non-exclusive.

Claims

WHAT IS CLAIMED TS:

1. A shoulder implant, comprising:a post, configured to be implanted at least partially within the shoulder of a patient, the post comprising a convex surface along a portion of a length of the post; anda baseplate, configured to contact a surface of a patient’s shoulder, the baseplate having a concave opening configured to engage the convex surface of the post.

2. The shoulder implant of Claim 1, wherein the post comprises an elongate body, the elongate body comprising a central lumen.

3. The shoulder implant of Claim 2, wherein the elongate body comprises internal threads.

4. The shoulder implant of Claim 1, wherein the post comprises an upper portion and a lower portion.

5. The shoulder implant of Claim 4, wherein the upper portion comprises a hexagonal surface or an octagonal surface.

6. The shoulder implant of Claim 2, where the elongate body comprises external threads.

7. The shoulder implant of Claim 2, wherein the elongate body is cylindrical.

8. The shoulder implant of Claim 1, wherein the post comprises an elliptical portion, the elliptical portion comprising a spherical surface.

9. The shoulder implant of Claim 8, wherein the elliptical portion is configured to form a ball joint.

10. The shoulder implant of Claim 1, wherein the opening extends around an entire circumference of the baseplate.

11. The shoulder implant of Claim 1, wherein the opening is along a central axis of the baseplate.

12. The shoulder implant of Claim 1, wherein the baseplate comprises a bottom surface and a top surface, the bottom surface and the top surface being planar.

13. The shoulder implant of Claim 1, further comprising one or more anchoring openings extending around the opening, each anchoring opening configured to receive an anchor to secure the baseplate to the surface of the patient’s shoulder.

14. The shoulder implant of Claim 13, wherein the one or more anchoring openings comprise an internal threaded surface.

15. The shoulder implant of Claim 13, wherein one or more of the one or more anchoring openings include a coupler.

16. The shoulder implant of Claim 13, wherein the one or more anchoring openings are positioned in a non-concentric arrangement and / or are in opposing pairs.

17. A shoulder implant post, comprising:an elongate body, the elongate body comprising:an elongate portion configured to be implanted at least partially within the shoulder of a patient; andan elliptical portion, coaxially aligned with the elongate portion, and configured to be positioned at least partially above a surface of the shoulder when the elongate portion is implanted therein.

18. The shoulder implant post of Claim 17, wherein the elongate body comprises a central lumen.

19. The shoulder implant post of Claim 17, wherein the elongate body comprises internal threads.

20. The shoulder implant post of Claim 17, comprising an upper portion and a lower portion.

21. The shoulder implant post of Claim 20, wherein the upper portion comprises a hexagonal surface or an octagonal surface.

22. The shoulder implant post of Claim 17, where the elongate body comprises external threads.

23. The shoulder implant post of Claim 17, wherein the elongate portion is cylindrical.

24. The shoulder implant post of Claim 17, wherein the elliptical portion comprises a spherical surface.

25. The shoulder implant post of Claim 17, wherein the elliptical portion is configured to form a ball joint.

26. The shoulder implant post of Claim 17, wherein the elliptical portion comprises a convex surface.

27. A shoulder implant baseplate, comprising:a bottom surface configured to contact a surface of a patient’ s shoulder; a top surface positioned opposite the bottom surface; anda central opening extending from the top surface to the bottom surface, the opening having a concave side wall extending around at least a portion of a circumference of the opening,wherein the opening is located in a central region of the baseplate.

28. The shoulder implant baseplate of Claim 27, wherein the central opening extends around an entire circumference of the shoulder implant baseplate.

29. The shoulder implant baseplate of Claim 27, wherein the opening is along a central axis of the baseplate.

30. The shoulder implant baseplate of Claim 27, wherein the bottom surface and the top surface are planar.

31. The shoulder implant baseplate of Claim 27, further comprising one or more anchoring openings extending around the central opening, each anchoring opening configured to receive an anchor to secure the shoulder implant baseplate to the surface of the patient’s shoulder.

32. The shoulder implant baseplate of Claim 31 , wherein the one or more anchoring openings comprise an internal threaded surface.

33. The shoulder implant baseplate of Claim 31, wherein one or more of the one or more anchoring openings include a coupler.

34. The shoulder implant baseplate of Claim 31. wherein the one or more anchoring openings are positioned in a non-concentric arrangement and / or are in opposing pairs.

35. A shoulder implant, comprising:a post, having an elongate body and configured to be implanted at least partially within the shoulder of a patient, the post comprising a longitudinal axis; anda baseplate, configured to surround the post, and tilt about the post along at least one direction with respect to the longitudinal axis of the post.

36. The shoulder implant of Claim 35, wherein the baseplate is configured to rotate about the longitudinal axis of the post.

37. The shoulder implant of Claim 35, wherein the baseplate is configured to tilt in a plurality of directions.

38. The shoulder implant of Claim 35, wherein the elongate body comprises a central lumen.

39. The shoulder implant of Claim 2, wherein the elongate body comprises internal threads.

40. The shoulder implant of Claim 35, wherein the post comprises an upper portion and a lower portion.

41. The shoulder implant of Claim 40, wherein the upper portion comprises a hexagonal surface or an octagonal surface.

42. The shoulder implant of Claim 35, where the elongate body comprises external threads.

43. The shoulder implant of Claim 35, wherein the elongate body is cylindrical.

44. The shoulder implant of Claim 35. wherein the post comprises an elliptical portion, the elliptical portion comprising a spherical surface.

45. The shoulder implant of Claim 35, wherein the post comprises an elliptical portion configured to form a ball joint.

46. The shoulder implant of Claim 35, wherein the baseplate comprises an opening, the opening extending around an entire circumference of the baseplate.

47. The shoulder implant of Claim 46, wherein the opening is along a central axis of the baseplate.

48. The shoulder implant of Claim 35, wherein the baseplate comprises a bottom surface and a top surface, the bottom surface and the top surface being planar.

49. The shoulder implant of Claim 35, further comprising one or more anchoring openings extending around a central opening, each anchoring opening configured to receive an anchor to secure the baseplate to a surface of the patient’s shoulder.

50. The shoulder implant of Claim 49, wherein the one or more anchoring openings comprise an internal threaded surface.

51. The shoulder implant of Claim 49, wherein one or more of the one or more anchoring openings include a coupler.

52. The shoulder implant of Claim 49, wherein the one or more anchoring openings are positioned in a non-concentric arrangement and / or are in opposing pairs.

Images