Implant Applicator Device

Abstract

The present invention discloses a device 100 comprising an adapter 110, a guide member 130, and a connector 120. The adapter includes a lumen 114 extending between the proximal end 110a and the distal end 110b of the adapter. The tubular portion 111 of the adapter includes one or more protrusions 111c1 disposed on the distal end side of the adapter. The flange portion 113 of the adapter is disposed coaxially with the tubular portion at the proximal end of the adapter. At least one set of a plurality of cavities 113a is disposed circumferentially around the flange portion. The guide member is detachably coupled to at least one of the cavities in the flange portion of the adapter to set the torsion angle. The head portion 123 of the connector is disposed at the proximal end 120a of the connector. The shank portion 121 of the connector is disposed at least partially within the lumen of the adapter through the flange portion.

Description

Technical Field

[0001] The present disclosure relates to a medical device applicator. More particularly, the present disclosure relates to a bone implant applicator.

Background Art

[0002] Aging, injury, and disease can weaken the bones, joints, and / or ligaments of the human body. Such injuries and damages typically manifest in the form of physical degeneration that restricts the freedom of mobility of the affected person.

[0003] To correct these injuries, additional supports or prostheses can be surgically inserted to supplement the strength of the affected bone and / or affected joint. Usually, a mallet is used to drive the prosthesis into the bone cavity of the affected bone. Subsequently, the prosthesis can be coupled with other components to form an artificial joint and, if necessary, to restore the freedom of mobility of the affected person.

[0004] However, the procedures described above performed by conventional instruments do not provide means for accurately aligning the prosthesis during impaction of the implant into the bone cavity. Typically, the prosthesis is prone to slipping, sinking, and / or rotating during the impaction of the prosthesis. Further, due to the use of a mallet, the impaction force used to push the prosthesis into the bone cavity varies from user to user. Therefore, the underlying bone is exposed to a high risk of fracture due to the application of uncontrolled forces.

[0005] There is a need for a device that overcomes the problems associated with conventional devices.

Summary of the Invention

[0006] Specific embodiments of the Disclosure are described herein below with reference to the accompanying drawings, but it should be understood that the disclosed embodiments are merely examples of the Disclosure, which can be implemented in various forms. Well-known functions or configurations are not described in detail to avoid obscuring the Disclosure with unnecessary details. Therefore, the specific structural and functional details disclosed herein should not be construed as limiting, but merely as the basis for the claims and as representative grounds to teach those skilled in the art how to employ the Disclosure in various ways in substantially any appropriately detailed configuration.

[0007] This disclosure relates to a device including an adapter, a guide member, and a connector. The adapter includes a proximal end, a distal end, and a lumen extending between the proximal and distal ends. The tubular portion of the adapter includes one or more protrusions disposed on the distal end side of the adapter. The protrusions detachably connect the tubular portion to an implant. The tubular portion at least partially defines the lumen of the adapter. The flange portion of the adapter is disposed coaxially with the tubular portion at the proximal end of the adapter. The flange portion at least partially defines the lumen of the adapter. At least one set of multiple cavities is circumferentially arranged around the flange portion. Each cavity is offset from the others. Each cavity of the multiple cavities corresponds to the anteversion angle that the implant connected to the tubular portion of the adapter makes with respect to the implantation site. The guide member is detachably connected to at least one of the cavities in the flange portion of the adapter to set the anteversion angle. The connector includes a proximal end and a distal end. The head portion of the connector is positioned at the proximal end of the connector. The shank portion of the connector is positioned at least partially within the lumen of the adapter through the flange portion. The distal end of the shank portion is operably coupled to the implant for insertion into the bone cavity.

[0008] The above summary, as well as the detailed description of the exemplary embodiments below, will be better understood when read in conjunction with the accompanying drawings. For illustrative purposes, exemplary configurations of the disclosure are shown in the drawings. However, the disclosure is not limited to the specific methods and means disclosed herein. Furthermore, those skilled in the art will understand that the drawings are not to a constant scale. [Brief explanation of the drawing]

[0009] [Figure 1] This figure shows device 100 according to one embodiment of the present disclosure. [Figure 2] This figure shows an adapter 110, a connector 120, and a guide member 130 of device 100 according to one embodiment of the present disclosure. [Figure 2a] This is a cross-sectional view of an adapter 110 of device 100 according to one embodiment of the present disclosure. [Figure 2b] This figure shows an adapter 110 of a device 100 coupled to an implant 200, according to one embodiment of the present disclosure. [Figure 2b1] This is a longitudinal cross-sectional view of an implant 200 according to one embodiment of the present invention. [Figure 2c] This figure shows an adapter 110 used for an anterior surgical approach according to one embodiment of the present disclosure. [Figure 2d] This figure shows an adapter 110 used for a posterior surgical approach according to one embodiment of the present disclosure. [Figure 2e] This figure shows an adapter 110 used for an anterior surgical approach according to one embodiment of the present disclosure. [Figure 2f] This figure shows an adapter 110 used for a posterior surgical approach according to one embodiment of the present disclosure. [Figure 3] This is a cross-sectional view of an adapter 110 of a device 100 coupled to a connector 120, according to one embodiment of the present disclosure. [Figure 3a]This is a cross-sectional view of an adapter 110 of a device 100 coupled to a connector 120, according to another embodiment of the present disclosure. [Figure 3a1] This figure shows a connector 120 according to another embodiment of the present disclosure. [Figure 4] This figure shows a device 100 in a 0-degree anteversion angle according to one embodiment of the present disclosure. [Figure 4a] This figure shows a device 100 in a 0-degree anteversion angle according to one embodiment of the present disclosure. [Figure 5] This figure shows a device 100 in a 20-degree anteversion angle according to one embodiment of the present disclosure. [Figure 5a] This figure shows a device 100 in a 20-degree anteversion angle according to one embodiment of the present disclosure. [Figure 6] This figure shows an impactor 160 of a device 100 having a first sub-unit 160a and a second sub-unit 160b according to one embodiment of the present disclosure. [Figure 6a] This figure shows an impactor 160 of a device 100 having a first sub-unit 160a and a second sub-unit 160b according to one embodiment of the present disclosure. [Figure 7] This figure shows an impactor 160 of a device 100 having a first sub-unit 160a and a second sub-unit 160b according to one embodiment of the present disclosure. [Figure 7a] This figure shows an impactor 160 of a device 100 having a first sub-unit 160a and a second sub-unit 160b according to one embodiment of the present disclosure. [Figure 8] This figure illustrates a method 300 for assembling device 100 according to one embodiment of the present disclosure. [Figure 9] This figure illustrates an implantation procedure 400 for inserting an implant 200 into a transplant site, according to one embodiment of the present disclosure. [Modes for carrying out the invention]

[0010] Before describing the present invention in detail, the definitions of certain words or phrases used throughout this patent document are defined as follows: the terms “include” and “comprise,” and their derivatives, mean unrestricted inclusion; the term “or” means inclusive and “and / or”; the phrases “coupled with” and “associated therewith,” and their derivatives, mean “include,” “be included within,” “interconnect with,” “contain,” “be contained within,” “connect to or with,” “couple to or with,” “be communicable with,” “cooperate with,” “interleave,” “juxtapose,” “be proximate to,” “be bound to or This can mean "with," "to have a property of," etc. Definitions of specific words and phrases are provided throughout this patent document, and those skilled in the art will understand that such definitions apply to past and future use of such defined words and phrases in many, if not most, cases.

[0011] References throughout this specification to "one embodiment," "an embodiment," or similar language mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment," "in an embodiment," and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment. Unless otherwise specified, each instance of "including," "comprising," "having," and variations thereof means "including but not limited to." A list of listed items does not suggest that any or all of the items are mutually exclusive and / or mutually inclusive unless otherwise specified. Also, the terms "a," "an," and "the" mean "one or more" unless otherwise specified.

[0012] The operations of the exemplary embodiments of the disclosed method may be described in a particular sequential order for convenience of presentation, but it should be understood that the disclosed embodiments can include an order of operations other than the particular sequential order disclosed. For example, the operations described sequentially may in some cases be rearranged or performed simultaneously. Further, the description and disclosure provided in connection with one particular embodiment is not limited to that embodiment and can be applied to any embodiment disclosed herein. Moreover, for simplicity, the attached figures may not show the various ways in which the disclosed systems, methods, and devices can be used in combination with other systems, methods, and devices.

[0013] Moreover, the features, advantages, and characteristics described in the embodiments can be combined in any suitable manner. One of ordinary skill in the art will recognize that an embodiment can be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages that may not be present in all embodiments may be recognized in a particular embodiment. These features and advantages of the embodiments will become more fully apparent from the following description and the appended claims, or may be understood by the practice of the embodiments described below.

[0014] The present disclosure relates to an implant applicator device (or device). The device of the present disclosure is used to align (or orient) an implant and insert it into a bone cavity (or implantation site). For example, the device of the present disclosure is used to insert a stem prosthesis into the cavity of the femur.

[0015] The present disclosure is described using an example of a stem prosthesis, but the teachings of the present disclosure are equally applicable to other bone implants (osteo-implants), which are also within the scope of the teachings of the present disclosure.

[0016] The device of the present disclosure includes an adapter that is removably coupled to the implant. The adapter is provided with one or more indicators that allow the user to correctly orient the implant and couple it to the adapter of the device. The indicator indicates at least one of the inner and outer sides of the implant with respect to the adapter.

[0017] At least two different variants of the adapter are made available to the surgeon, one variant used for anterior surgical approaches and the other for posterior surgical approaches. In other words, the adapter is provided with discriminatory medial and / or lateral markings to enable the surgeon to select the adapter for the surgical approach determined to insert the implant into the bone cavity. The surgical approach and the corresponding adapter to be used are determined by the surgeon based on the patient's circumstances.

[0018] The adapter is further provided with at least one protrusion. The protrusion helps maintain the orientation of the implant relative to the adapter during the implantation procedure. In other words, the protrusion prevents the implant from rotating relative to the adapter during the implantation procedure.

[0019] The adapter also helps to set the rotational (or angular) direction of the implant relative to the implantation site during implantation. The device's adapter includes multiple cavities that extend at least partially circumferentially around the adapter. Each of the adapter's multiple cavities corresponds to a predetermined anteversion angle. At least some of the multiple cavities are positioned diametrically opposite to each other (for example, as mirror images of each other), thereby allowing the surgeon to use the device on either of the limbs (in other words, the left or right limb) as needed.

[0020] The device further includes a guide member and an impactor. The guide member helps align the adapter and implant of the device with respect to the implantation site by selectively determining the orientation of the guide member and integrating with one of the multiple cavities of the adapter, thereby setting the anteversion angle as needed. During the implantation procedure, the guide member is aligned with at least one anatomical landmark feature of the implantation site (e.g., the long axis of the tibia), thereby aligning the adapter and implant with respect to the implantation site.

[0021] The impactor allows the user to apply a consistent force to push the implant into the implantation site, regardless of who is using the device.

[0022] Referring next to the figures, Figure 1 illustrates an exemplary embodiment of device 100. Device 100 may include a plurality of components operably coupled to one another. In the exemplary embodiment, as shown in Figure 1, device 100 includes an adapter 110, a connector 120, a guide member 130, an elongated member 140, one or more stoppers 150, and at least one impactor 160.

[0023] Figure 2 shows an adapter 110, connector 120, and guide member 130 of device 100 according to one embodiment of the present disclosure. The adapter 110 of device 100 includes a proximal end 110a and a distal end 110b. The adapter 110 may be made from a metal or metal alloy, including, but not limited to, cobalt-chromium, titanium, or stainless steel. Alternatively, the adapter 110 may be made from a polymer material, including, but not limited to, polyphenylsulfone (PPSU), acetal polyoxymethylene copolymer (POM-C), carbon fiber, or reinforced plastic. In an exemplary embodiment, the adapter 110 is made from biocompatible stainless steel.

[0024] The adapter 110 may include a tubular portion 111 disposed at the distal end 110b of the adapter 110, and a flange portion 113 disposed at the proximal end 110a of the adapter 110. The tubular portion 111 and the flange portion 113 may be detachably joined to each other by, but not limited to, mechanical fasteners, metal / plastic / composite / hybrid material joining methods such as welding, press-fit, screw fastening, etc. Alternatively, the tubular portion 111 and the flange portion 113 may form a single structure.

[0025] The tubular portion 111 and the flange portion 113 may together (or define) a lumen 114 at least partially (as shown in Figure 2a), thereby extending between the proximal end 110a and the distal end 110b of the adapter 110. The lumen 114 of the adapter 110 may be configured to at least partially receive the connector 120 (as described below). In an exemplary embodiment, the adapter 110 includes a circular lumen 114.

[0026] The tubular portion 111 may have a length of at least 10 mm. The tubular portion 111 may have a diameter of at least 2 mm. In the exemplary embodiment, the length and diameter of the tubular portion 111 are 107 mm and 15 mm, respectively. The tubular portion 111 may have any shape, including but not limited to cylindrical and elliptical shapes.

[0027] The tubular portion 111 includes one or more sections. In an exemplary embodiment, as shown in Figure 2, the tubular portion 111 includes three sections, namely a first section 111a, a second section 111b, and a third section 111c. The first section 111a is located on the proximal end 110a side, adjacent to the flange portion 113. In an exemplary embodiment, as shown in Figure 2, the first section 111a has a cylindrical shape, which allows the user to handle and operate the adapter 110.

[0028] The first section 111a on the proximal end 110a side includes a first engaging portion 111a1 that extends at least partially over the length of the first section 111a. The first engaging portion 111a1 temporarily engages with the connector 120 when the connector 120 is inserted into the lumen 114 of the adapter 110 (as described below). The first engaging portion 111a1 prevents unintended pulling out / retraction of the connector 120 during the transplant procedure. In an exemplary embodiment, as shown in Figure 2a, the first engaging portion 111a1 includes multiple female threads on the inner surface of the first section 111a, in other words, within the lumen 114 defined by the first section 111a of the tubular portion 111.

[0029] The first engaging portion 111a1 further assists the surgeon in selectively pulling out the connector 120 from within the lumen 114 of the adapter 110 to clean / sterilize / repair the device 100 after / before the implantation procedure (as described below).

[0030] The second section 111b is positioned between the first section 111a and the third section 111c. The second section 111b allows the connector 120 to rotate freely within the lumen 114 of the adapter 110, thereby enabling the surgeon to connect the implant 200 to the connector 120 (as shown in Figure 2b).

[0031] In addition or as optional, as shown in Figure 2, a second section 111b of the tubular portion 111 is provided with one or more notches 111b1 so as to expose at least partially the lumen 114 below. The notches 111b1 may have any predefined shape and / or angular direction. In an exemplary embodiment, as shown in Figures 2 and 2a, the second section 111b includes two diametrically opposite through-rounded rectangular notches 111b1 perpendicular to the lumen 114 of the adapter 110. The notches 111b1 allow the connector 120 to rotate freely within the lumen 114 of the adapter 110 without the connector 120 coming out of the lumen 114 of the adapter 110 (as described below).

[0032] A third section 111c is located on the distal end 110b side, adjacent to the second section 111b. The third section 111c may have one or more protrusions 111c1 at the distal end 110b. The protrusions 111c1 are connected to the third section 111c of the adapter 110 by, but not limited to, mechanical fasteners, metal / plastic / composite / hybrid material joining methods such as welding, press-fit, screw fastening, etc. In an exemplary embodiment, as shown in Figure 2, two protrusions 111c1 are formed integrally with the tubular portion 111 at the distal end 110b of the adapter 110. The protrusions 111c1 restrict the rotation of the implant 200 relative to the adapter 110, thereby maintaining a predefined orientation of the implant 200 during the implantation procedure.

[0033] Figure 2b shows an exemplary embodiment of the implant 200 coupled to the adapter 110. The implant 200 is made from materials including, but not limited to, stainless steel, titanium, and cobalt-chromium. The implant 200 may be configured to be implanted within a bone cavity (not shown), for example, within a cavity widened by a reamer in the femur. The implant 200 may include a neck portion 201 and a stem portion 203. The neck portion 201 may define a predefined angle with the stem portion 203, corresponding to the femoral neck angle of the patient. In one embodiment, the predefined angle is in the range of 110° to 150°.

[0034] In an exemplary embodiment, as shown in Figure 2b, the stem portion 203 of the implant 200 is detachably coupled to the tubular portion 111 of the adapter 110. As shown in Figure 2b1, the stem portion 203 of the implant 200 is provided with one or more first recesses 203a corresponding to each of the protrusions 111c1 of the adapter 110. Thus, when the implant 200 is coupled to the adapter 110, the protrusions 111c1 of the adapter 110 engage with the corresponding first recesses 203a of the stem portion 203. The engagement between the protrusions 111c1 of the adapter 110 and the first recesses 203a of the implant 200 restricts the rotation of the implant 200 relative to the adapter 110, thereby maintaining a predefined orientation of the implant 200 during the implantation procedure.

[0035] Additionally, or optionally, the tubular portion 111 may be provided with at least one first indicator 111c2 to correctly orient the implant 200 relative to the adapter 110.

[0036] In an exemplary embodiment, as shown in Figures 2 and 2b, a first indicator 111c2 is provided on the third section 111c of the tubular portion 111. The first indicator 111c2 is an illustration of the implant 200 that points to the position of the implant 200 relative to the adapter 110 and / or the direction of the neck portion 201 of the implant 200.

[0037] In one embodiment, a second indicator (not shown) is provided on the tubular portion 111 of the adapter 110, similar to the first indicator 111c2. In an exemplary embodiment, the second indicator is positioned on the diametrically opposite side of the first indicator 111c2. The first indicator 111c2 and the second indicator allow the surgeon to use the same adapter 110 to insert the implant 200 into either of the patient's limbs (in other words, the right or left limb) as needed. For example, when inserting the implant 200 into the femur of the right limb, the surgeon may refer to the first indicator 111c2, and when inserting the implant 200 into the femur of the left limb, the surgeon may refer to the second indicator.

[0038] In one embodiment, the tubular portion 111 is provided with one first indicator 111c2. In an alternative embodiment, the tubular portion 111 is provided with one second indicator. In yet another alternative embodiment, the tubular portion 111 is provided with one first indicator 111c2 and one second indicator.

[0039] Although the tubular portion 111 is described as having a cylindrical structure, other functionally equivalent shapes of the tubular portion 111 are also within the scope of the teachings of this disclosure. For example, the tubular portion 111 may include a stepped rod-like shape.

[0040] Referring again to Figure 2, the flange portion 113 of the adapter 110 may be coaxially arranged around the tubular portion 111 on the proximal end 110a side. The flange portion 113 may have a length of at least 5 mm. The flange portion 113 may have a diameter of at least 10 mm. In an exemplary embodiment, the length and diameter of the flange portion 113 are 12.6 mm and 37.8 mm, respectively.

[0041] In exemplary embodiments, the flange portion 113 is cylindrical, as shown in Figure 2. Although the flange portion 113 is shown as cylindrical, other functionally equivalent shapes of the flange portion 113 are also within the scope of the teachings of this disclosure.

[0042] The flange portion 113 may be provided with at least one set of a plurality of cavities 113a configured to receive the guide member 130 (as described below). The cavities 113a may be arranged so that each cavity 113a is circumferentially offset from one another so that it corresponds to a predefined anteversion angle (as described below). The anteversion angle may range from -50° to 80°.

[0043] The adapter 110 is described using an example in which the cavity 113a is located in the flange portion 113, but the cavity 113a may instead be located in the tubular portion 111, which is also within the scope of this disclosure.

[0044] The anteversion angle of the cavity 113a may be expanded (or increased) in either a predetermined direction, in other words, clockwise or counterclockwise (as described below). Alternatively, the anteversion angle of the cavity 113a may be expanded (or increased) either toward the inside or outside of the adapter 110 (as described below). The inner surface corresponds to the direction of the neck portion 201 of the implant 200.

[0045] In an exemplary embodiment, as shown in Figure 2, the flange portion 113 is provided with a set of four cavities 113a. According to one embodiment, the cavities 113a are offset from each other circumferentially by 10 degrees. This allows the cavities 113a to correspond to anteversion angles ranging from 0° to 30°, in other words, each cavity 113a corresponds to 0°, 10°, 20°, and 30° in a clockwise direction when viewed from the proximal end 110a of the adapter 110.

[0046] In other exemplary embodiments not shown, the flange portion 113 may be provided with two sets of four cavities 113a each, namely a first set of cavities 113a and a second set of cavities 113a (not shown). The first set of cavities 113a is arranged circumferentially around the flange portion 113, as shown in Figure 2. The second set of cavities 113a is arranged diametrically opposite the first set of four cavities 113a. Thus, the flange portion 113 may be provided with a total of eight cavities 113a. The first set of cavities 113a and the second set of cavities 113a allow the surgeon to insert the implant 200 into either of the patient's limbs (in other words, the right or left limb) as needed and use the same adapter 110 for alignment.

[0047] According to one embodiment, the flange portion 113 is provided with at least one of a third indicator 113b (shown in Figures 2 and 2c) and a fourth indicator 113c (shown in Figure 2d). The third indicator 113b and the fourth indicator 113c are positioned diametrically opposite to each other. The predefined orientation of the third indicator 113b and / or the fourth indicator 113c with respect to the anteversion angle (described below) allows the surgeon to determine the medial and lateral sides of the implant 200 during the implantation procedure and align them with the medial and lateral sides of the adapter 110.

[0048] In one embodiment, the flange portion 113 is provided with one third indicator 113b. In an alternative embodiment, the flange portion 113 is provided with one fourth indicator 113c. In yet another alternative embodiment, the flange portion 113 is provided with one third indicator 113b and one fourth indicator 113c.

[0049] In exemplary embodiments, as shown in Figures 2 and 2c, a third indicator 113b includes the marking "internal" on the flange portion 113, thereby indicating the internal side of the adapter 110. In exemplary embodiments, as shown in Figure 2d, a fourth indicator 113c includes the marking "external" on the flange portion 113, thereby indicating the external side of the adapter 110. The orientation of the internal and / or external markings relative to the anteversion angle allows the surgeon to select the adapter 110 for an anterior or posterior surgical approach to insert the implant 200 into the bone cavity (as described below).

[0050] Along with the "medial" and "lateral" markings, the directional characteristics related to the anteversion angle of the cavity 113a help determine the surgical approach for which the adapter 110 should be used by the surgeon. For example, Figures 2c and 2d show two different orientations of the adapter 110. The "medial" and "lateral" markings of the adapter 110 shown in Figures 2c and 2d are swapped. Thus, the first indicator 111c2 (and the second indicator) illustrating the orientation of the neck portion 201 of the implant 200 are also reversed. This means that the adapter 110 shown in Figure 2c shows that the anteversion angle of the cavity 113a increases from the "lateral" marking to the "medial" marking. Conversely, the adapter 110 shown in Figure 2d shows that the anteversion angle of the cavity 113a increases from the "medial" marking to the "lateral" marking. Therefore, the adapter 110 shown in Figure 2c is used by the surgeon for an anterior surgical approach, and the adapter 110 shown in Figure 2d is used by the surgeon for a posterior surgical approach.

[0051] In another example shown in Figures 2e and 2f, the adapter 110 increases its respective anteversion angles in opposite directions (instead of reversing the “medial” (third indicator 113b) and “lateral” (fourth indicator 113c) markings of the adapter 110 and reversing the direction of the first indicator 111c2, as described above). Thus, the adapter 110 illustrated in Figure 2e shows that the anteversion angle of the cavity 113a decreases from the “medial” marking to the “lateral” marking. Conversely, the adapter 110 illustrated in Figure 2f shows that the anteversion angle of the cavity 113a increases from the “medial” marking to the “lateral” marking. Therefore, the adapter 110 shown in Figure 2e is used by surgeons for anterior surgical approaches, and the adapter 110 shown in Figure 2f is used by surgeons for posterior surgical approaches.

[0052] The orientation of the anteversion angle is expressed using both "medial" and "lateral" notations, but only one of these notations may be sufficient to select the adapter 110 for either an anterior or posterior surgical approach as determined by the surgeon. Therefore, one or both of these notations may be provided on the flange portion 113 of the adapter 110.

[0053] Referring again to Figure 2, an embodiment of the connector 120 is shown. The connector 120 may be made from any metal or metal alloy, including, but not limited to, any surgical steel, a cobalt-chromium alloy, titanium, stainless steel, etc. Alternatively, the connector 120 may be made from polymer materials, including, but not limited to, polyphenylsulfone (PPSU), acetal-polyoxymethylene copolymer (POM-C), carbon fiber, or reinforced plastic. In an exemplary embodiment, the connector 120 is made from biocompatible stainless steel. The connector 120 may include a shank portion 121 and a head portion 123. The connector 120 includes a proximal end 120a and a distal end 120b. The head portion 123 may be disposed at the proximal end 120a, and the shank portion 121 may be disposed at the distal end 120b. The shank portion 121 and the head portion 123 may be detachably or permanently coupled to each other. Alternatively, the shank portion 121 forms an integral structure with the head portion 123.

[0054] The shank portion 121 may have a shape corresponding to the shape of the lumen 114 of the adapter 110. The shank portion 121 may have a length and diameter corresponding to the length and diameter of the lumen 114 of the adapter 110. In an exemplary embodiment, the length and diameter of the shank portion 121 are 111 mm and 6 mm, respectively.

[0055] The shank portion 121 of the connector 120 is at least partially disposed within the lumen 114 of the adapter 110 through the flange portion (113). In the exemplary embodiment shown in Figure 3, the shank portion 121 of the connector 120 is disposed within the lumen 114 of the adapter 110 such that the distal end 120b of the connector 120 extends from the distal end 110b of the adapter 110.

[0056] The distal end 120b of the connector 120 (and / or shank portion 121) can be operably coupled to the implant 200. As shown in Figure 2b1, the stem portion 203 of the implant 200 is provided with a second recess 203b configured to receive the distal end 120b of the connector 120. In exemplary embodiments not shown, the distal end 120b of the connector 120 and the second recess 203b of the stem portion 203 of the implant 200 are each provided with corresponding threads so that the distal end 120b of the connector 120 is secured in the second recess 203b of the stem portion 203. The surgeon may screw the connector 120 to the implant 200 for coupling / uncoiling the connector 120 and the implant 200. Other functionally equivalent mechanical means for coupling the connector 120 and the implant 200 are also within the scope of the teachings of this disclosure.

[0057] As shown in Figure 2, the shank portion 121 is provided with a second engaging portion 121a that extends at least partially over the length of the shank portion 121. The second engaging portion 121a is configured to temporarily engage with the first engaging portion 111a1 of the adapter 110. In an exemplary embodiment, the second engaging portion 121a includes a plurality of male threads corresponding to the female threads of the first engaging portion 111a1 of the adapter 110.

[0058] The shank portion 121 of the connector 120 is at least partially inserted into the lumen 114 of the adapter 110 by sliding the shank portion 121 through the flange portion 113. The connector 120 can be switched between a first configuration and a second configuration depending on the position of the second engaging portion 121a relative to the first engaging portion 111a1 when the shank portion 121 is at least partially inserted into the lumen 114. In the first configuration of the connector 120, the second engaging portion 121a is positioned proximal to the first engaging portion 111a1, in other words, the second engaging portion 121a is positioned within the first section 111a of the adapter 110. In the first configuration of the connector 120, the connector 120 can be slidably retracted from the adapter 110, for example, to clean and sterilize the device 100.

[0059] In the second configuration of the connector 120, as shown in Figure 3, the second engaging portion 121a is positioned distal to the first engaging portion 111a1, in other words, the second engaging portion 121a is positioned within the second section 111b of the adapter 110. In the second configuration of the connector 120, the connector 120 is freely rotatable within the lumen 114 of the adapter 110 so that the surgeon can rotate the connector 120 to connect the implant 200 to the connector 120 before initiating the implantation procedure. In the second configuration of the connector 120, the connector 120 is restricted from slidingly retracting from the adapter 110 because the first engaging portion 111a1 of the adapter 110 interferes with the second engaging portion 121a of the connector 120, thereby preventing accidental removal of the connector 120 from within the adapter 110 during the implantation procedure.

[0060] To switch the connector 120 between its first and second configurations, first, the second engaging portion 121a is physically engaged with the first engaging portion 111a1, and torque is applied to rotate the second engaging portion 121a relative to the first engaging portion 111a1. This temporary engagement between the first engaging portion 111a1 and the second engaging portion 121a switches the connector 120 between its first and second configurations. In an exemplary embodiment, torque is applied to the connector 120 in a clockwise direction to switch it from its first configuration to its second configuration, and vice versa.

[0061] In the alternative exemplary embodiment shown in Figures 3a and 3a1, the first engaging portion 111a1 includes at least one plunger (or other functionally equivalent means), and the second engaging portion 121a includes a bulge (or other functionally equivalent means). In this embodiment, the bulge of the connector 120 is manually pulled / pushed over the plunger to switch the connector 120 between its first and second configurations.

[0062] The connection between the first engaging portion 111a1 and the second engaging portion 121a was described using the example of a threaded, bulging plunger portion, but other functionally equivalent means are also within the scope of the teachings of this disclosure.

[0063] The head portion 123 of the connector 120 assists the surgeon in manipulating the connector 120, for example, allowing the surgeon to apply torque to the connector 120. This allows the head portion 123 of the connector 120 to rotate the connector 120 in order to either switch the connector 120 between its first and second configurations, or to connect the connector 120 to the implant 200. Thus, the head portion 123 of the connector 120 may be ergonomically shaped to allow the user to comfortably grasp and manipulate (for example, rotate) the head portion 123. In the exemplary embodiment shown in Figure 2, the head portion 123 of the connector 120 is shaped like a roller with grooves.

[0064] As shown in Figures 3 and 3a, the head portion 123 is provided with at least one cavity 123a. The cavity 123a is configured to receive the elongated member 140 of the device 100 (described below).

[0065] The guide member 130 may have shapes including, but are not limited to, cylindrical, spherical, hexagonal, elliptical, triangular, and the like. In the exemplary embodiment shown in Figure 2, the guide member 130 is rod-shaped. The guide member 130 may be used to align the device 100 and implant 200 with the implantation site based on the patient's anatomical structure (as will be described later).

[0066] The guide member 130 may be provided with at least one axial projection 131. In an exemplary embodiment, the axial projection 131 forms an integral structure with the guide member 130.

[0067] The axial projection 131 of the guide member 130 can be detachably coupled to at least one of the cavities 113a of the adapter 110. In exemplary embodiments, the axial projection 131 and the cavity 113a are provided with complementary threads such that the axial projection 131 is screwed into one of the cavities 113a of the adapter 110. In alternative embodiments, the axial projection 131 is snap-fitted into one of the cavities 113a of the adapter 110. Other means of coupling the guide member 130 to the cavity 113a of the adapter 110 are also within the scope of the teachings of this disclosure.

[0068] Additionally, or optionally, as shown in Figure 2, the guide member 130 may be provided with a rough surface 133 extending at least partially over the length of the guide member 130. The rough surface 133 allows the surgeon to easily handle and / or hold the guide member 130.

[0069] Figure 4 partially shows an exemplary embodiment of the device 100 coupled to the implant 200 (described above). As shown in Figure 4, the guide member 130 is coupled to one cavity 113a of the adapter 110, corresponding to a 0-degree anteversion angle.

[0070] Figure 4a shows a view of device 100 from the surgeon's perspective (corresponding to the configuration shown in Figure 4) according to one embodiment. Figure 4a further shows a virtual axis "xx" running parallel to the patient's coronal plane (not shown). The surgeon aligns the guide member 130 of device 100 perpendicular to the virtual axis "xx" by rotating device 100. In other words, the surgeon aligns the guide member 130 parallel to the long axis of the tibia while the tibia is bent and held perpendicular to the femur. The alignment of the guide member 130 shown in Figures 4 and 4a results in the neck portion 201 of the implant 200 having a 0-degree anteversion angle with respect to the virtual axis "xx".

[0071] The femoral anteversion angle (or femoral anteversion angle) plays a crucial role in the success of transplant procedures because it affects the degree of torsional force experienced by the femur. Deviations in the femoral anteversion angle, as determined by the surgeon for each patient, can adversely affect the biomechanics of the hip joint through changes in factors such as the length of the running arm and joint load.

[0072] Similar to Figure 4, Figure 5 partially shows an exemplary embodiment of the device 100 coupled to the implant 200 (described above). As shown in Figure 5, the guide member 130 is coupled to one cavity 113a of the adapter 110, corresponding to a 20-degree anteversion angle.

[0073] Figure 5a shows the appearance of device 100 as seen by a surgeon (corresponding to the configuration shown in Figure 5) according to one embodiment. The surgeon aligns the guide member 130 of device 100 perpendicular to the virtual axis "xx" by rotating device 100. In other words, the surgeon aligns the guide member 130 parallel to the long axis of the tibia while the tibia is bent and held perpendicular to the femur. The alignment of the guide member 130 shown in Figures 5 and 5a results in the neck portion 201 of the implant 200 having a 20-degree anteversion angle with respect to the virtual axis "xx".

[0074] As shown in the illustrative depictions in Figures 4, 4a, 5, and 5a, the connection between the axial projection 131 of the guide member 130 and one of the cavities 113a of the adapter 110 allows the surgeon to set a predetermined anteversion angle of the implant 200 for each patient as needed.

[0075] Although the device 100 of the present disclosure has been described above using two embodiments of anteversion angles, the device 100 of the present disclosure may be used with any number of anteversion angles, which is also within the scope of the teachings of the present disclosure.

[0076] Referring again to Figure 1, the elongated member 140 includes a proximal end 140a and a distal end 140b. The elongated member 140 may have a predefined shape, including, but is not limited to, a cylindrical, spherical, hexagonal, elliptical, or triangular shape. In an exemplary embodiment, the elongated member 140 is shaped like a cylinder. The elongated member 140 may have a length of at least 100 mm. The elongated member 140 may have a diameter of at least 5 mm. In an exemplary embodiment, the length and diameter of the elongated member 140 are 241 mm and 10 mm, respectively.

[0077] As shown in Figures 3 and 3a, the distal end 140b of the elongated member 140 can be detachably coupled to the cavity 123a of the head portion 123 of the connector 120 via a screw, snap fit, or the like. Alternatively, the distal end 140b of the elongated member 140 can be fixedly coupled to the cavity 123a of the head portion 123 of the connector 120. Thus, the elongated member 140 can be rotated by the surgeon to rotate the connector 120.

[0078] As shown in Figure 1, the stopper 150 may be joined to the proximal end 140a of the elongated member 140 via press-fit, snap-fit, welding, or the like. The stopper 150 may have a predefined shape, including, but is not limited to, cylindrical, spherical, hexagonal, elliptical, triangular, etc. In an exemplary embodiment, as shown in Figure 1, two cylindrical stoppers 150, namely a first stopper 150a and a second stopper 150b, are joined to the proximal end 140a of the elongated member 140.

[0079] The first stopper 150a may be positioned proximal to the second stopper 150b. The first stopper 150a may be made from a metal or metal alloy, including, but not limited to, cobalt-chromium, titanium, or stainless steel. In an exemplary embodiment, the first stopper 150a is made from stainless steel. The first stopper 150a may have a length of at least 1 mm. The first stopper 150a may have a diameter of at least 5 mm. In an exemplary embodiment, the length and diameter of the first stopper 150a are 20 mm and 25.5 mm, respectively.

[0080] The first stopper 150a allows a surgeon to optionally use a mallet or similar instrument to impact the first stopper 150a of the device 100 in order to insert the implant 200 into the bone cavity. In an exemplary embodiment, the force from the mallet is transmitted from the first stopper 150a to the head portion 123 of the connector 120 via an elongated member 140.

[0081] The second stopper 150b may be made from a material including, but not limited to, silicone, plastic, any load-bearing gel, polymer material, or elastomer. Alternatively, the second stopper 150b may include an elastic member. In an exemplary embodiment, the second stopper 150b is made from a medical-grade acetal copolymer. The second stopper 150b may have a length of at least 5 mm. The second stopper 150b may have a diameter of at least 2 mm. In an exemplary embodiment, the length and diameter of the second stopper 150b are 43.5 mm and 25.5 mm, respectively. The second stopper 150b helps to absorb the residual force generated from the impactor 160 (as described below).

[0082] As shown in Figure 1, the impactor 160 may be slidably positioned around the elongated member 140 between the stopper 150 and the head portion 123 of the connector 120. The impactor 160 may be ergonomically shaped for ease of use. The impactor 160 may be made from a metal or metal alloy, including, but not limited to, cobalt-chromium, titanium, and stainless steel. In the exemplary embodiment shown in Figure 1, the impactor 160 is made from biocompatible stainless steel.

[0083] Low-density / low-quality bone (e.g., osteoporotic bone) is at high risk of fracture when subjected to large forces. In contrast, bone with high density / high quality (e.g., normal / sclerotic bone) is more resistant to fracture when subjected to large forces. Therefore, the appropriate weight of the impactor 160 is selected according to the bone density / bone quality at the graft site for inserting the implant 200 into the bone cavity (explained later).

[0084] In an exemplary embodiment, the impactor 160 has a one-piece structure, as shown in Figure 1. In the exemplary embodiment, the impactor 160 weighs 1013 grams and is used for osteoporotic bone. In another exemplary embodiment, the impactor 160 weighs 1457 grams and is used for sclerotic bone.

[0085] The impactor 160 is used by the surgeon to strike the head portion 123 of the connector 120, thereby transmitting a predetermined amount of force from the impactor 160 to the connector 120. The connector 120 transmits a predetermined force to the implant 200, thereby allowing the implant 200 to be pushed into the bone cavity at the graft site.

[0086] The predetermined amount of force is directly proportional to at least the weight of the impactor 160 and / or the distance between the stopper 150 and the connector 120. This distance can be at least 80 mm. In an exemplary embodiment, the distance between the stopper 150 and the connector 120 is 171.5 mm. The impactor 160 allows the user to apply a constant force to the implant 200, regardless of the user.

[0087] The impactor 160 is slid over the elongated member 140 by the surgeon in a reciprocating motion between the connector 120 and the stopper 150. The second stopper 150b thereby absorbs the residual force of the impactor 160 when it returns from the connector 120 to the second stopper 150b.

[0088] In alternative embodiments, as shown in Figures 6 and 6a, the impactor 160 is made up of two or more subunits, for example, a first subunit 160a and a second subunit 160b. The first and second subunits 160a and 160b of the impactor 160 may each have a predefined weight of at least 200 grams, depending on the user's requirements. The first and second subunits 160a and 160b of the impactor 160 may be selectively assembled on an elongated member 140 to obtain the required amount of weight (or force) of the impactor 160, according to the bone density and / or bone quality at the implantation site.

[0089] The first sub-unit 160a is positioned proximal to the second sub-unit 160b. The first sub-unit 160a is detachably coupled to the second sub-unit 160b. In exemplary embodiments, as shown in Figures 6a and 7a, the second sub-unit 160b is fixed onto the threaded portion 160a1 of the first sub-unit 160a. Other functionally equivalent means for coupling the first and second sub-units 160a, 160b to each other are also within the scope of the teachings of this disclosure.

[0090] The impactor 160 can be switched between a first configuration and a second configuration by the surgeon as needed. In the first configuration of the impactor 160, both the first and second sub-units 160a and 160b are connected to each other and configured to slide on the elongated member 140. In the first configuration of the impactor 160, the impactor 160 is used for sclerotic bone.

[0091] In the second configuration of the impactor 160, the second sub-unit 160b is detached from the first sub-unit 160a. Furthermore, the first sub-unit 160a is reversibly docked adjacent to the second stopper 150b. This configures the second sub-unit 160b to slide only over the elongated member 140. In the second configuration of the impactor 160, the impactor 160 is used for osteoporotic bones.

[0092] The first subunit 160a can be reversibly docked adjacent to the stopper 150 via a docking means 161. In an exemplary embodiment, as shown in Figures 6 and 6a, the docking means 161 includes a knob 161a. The knob 161a is rotatably coupled to the first subunit 160a via a plurality of male threads. Thus, the first subunit 160a is provided with a hole 161b having a plurality of female threads to at least partially receive the knob 161a.

[0093] In an exemplary embodiment, the knob 161a is secured in a hole 161b of the first sub-unit 160a in order to dock the first sub-unit 160a onto the elongated member 140. Once secured in the hole 161b, the knob 161a engages at least partially with a slot (not shown) in the elongated member 140, thereby preventing the first sub-unit 160a from sliding on the elongated member 140. Conversely, the knob 161a is disengaged from the hole 161b in order to undock the first sub-unit 160a.

[0094] Figures 7 and 7a show another exemplary embodiment for docking the first sub-unit 160a of the impactor 160. In the exemplary embodiment, as shown in Figure 7, the docking means 161 includes an engaging portion 161c positioned distal to the second stopper 150b on the elongated member 140. The first sub-unit 160a can be detachably coupled to the engaging portion 161c.

[0095] In an exemplary embodiment, the first sub-unit 160a and the engaging portion 161c are provided with a plurality of complementary threads to enable the first sub-unit 160a to dock onto the elongated member 140. Thus, as shown in Figure 7a, the first sub-unit 160a is fixed onto the engaging portion 161c to prevent the first sub-unit 160a from sliding on the elongated member 140.

[0096] Other functionally equivalent means for docking the first sub-unit 160a onto the elongated member 140 are also within the scope of the teachings of this disclosure.

[0097] Although the impactor 160 of this disclosure has been described using an example consisting of two subunits, impactors 160 having three or more subunits are also within the scope of the teachings of this disclosure.

[0098] Figure 8 shows an exemplary embodiment of method 300 for assembling device 100 before commencing the implantation procedure.

[0099] The procedure begins in step 301 by orienting the neck portion 201 of the implant 200 so that it faces inward towards the adapter 110. The surgeon ensures the orientation of the neck portion 201 of the implant 200 based on at least one of the first indicator 111c2 (and / or second indicator) provided on the third section 111c of the tubular portion 111, and the third indicator 113b (and / or fourth indicator 113c) provided on the flange portion 113.

[0100] In step 303, the adapter 110 is coupled to the implant 200. In an exemplary embodiment, as shown in Figure 2b, the stem portion 203 of the implant 200 is detachably coupled to the adapter 110. The protrusion 111c1 of the adapter 110 engages with the stem portion 203 so as to restrict the rotation of the implant 200 relative to the adapter 110, thereby maintaining a predefined orientation of the implant 200 during the implantation procedure.

[0101] In step 305, the connector 120 is connected to the implant 200. In exemplary embodiments not shown, the distal end 120b of the connector 120 and the stem portion 203 of the implant 200 are provided with corresponding threads, respectively, so that the distal end 120b of the connector 120 is secured inside the implant 200. In other words, the surgeon screws the distal end 120b of the connector 120 into the stem portion 203 of the implant 200 to connect the connector 120 to the implant 200.

[0102] In step 307, the impactor 160 is slidably coupled (or attached) to the elongated member 140. In an exemplary embodiment, the impactor 160 slides along the distal end 140b of the elongated member 140.

[0103] Additionally, or optionally, an appropriate weight of the Impactor 160 (shown in Figure 1) is selected depending on the bone density / bone quality at the graft site.

[0104] Alternatively, an impactor 160 having two or more subunits (for example, a first subunit 160a and a second subunit 160b (shown in Figures 6 and 7)) may be selected to slide over the elongated member 140.

[0105] In step 309, the elongated member 140 is coupled to the connector 120. In an exemplary embodiment, the elongated member 140 is coupled to the head portion 123 of the connector 120 by screwing the distal end 140b of the elongated member 140 into the cavity 123a of the connector 120.

[0106] Figure 9 shows an exemplary embodiment of the implantation procedure 400 for inserting the implant 200 at the implantation site using device 100. For the implantation procedure 400, device 100 is prepared by binding the implant 200 as described above (with reference to Figure 8).

[0107] The implantation procedure 400 begins in step 401 by inserting the implant 200 into the bone cavity at the implantation site. In an exemplary embodiment, the implant 200 is inserted into the bone cavity by pushing the device 100 and / or implant 200 until the implant 200 encounters resistance to pushing against the implant 200.

[0108] In step 403, the guide member 130 is coupled to the adapter 110. In an exemplary embodiment, the axial projection 131 of the guide member 130 is detachably coupled to one of the cavities 113a of the adapter 110. The coupling between the axial projection 131 of the guide member 130 and one of the cavities 113a of the adapter 110 allows the surgeon to set a predetermined anteversion angle of the implant 200 for each patient as needed (as described in the next step).

[0109] In step 405, the surgeon aligns the guide member 130 of the device 100 perpendicular to the virtual axis "xx" by rotating the device 100. The protrusion 111c1 of the adapter 110 causes the implant 200 to rotate with the device 100. In an exemplary embodiment, the surgeon aligns the guide member 130 parallel to the long axis of the tibia while the tibia is bent and held perpendicular to the femur. The alignment of the guide member 130 sets the anteversion angle of the implant 200 relative to the implantation site.

[0110] In step 407, the implant 200 is pushed into the bone cavity at the graft site by using the impactor 160 of device 100. In an exemplary embodiment, the impactor 160 is used slidably by the surgeon to strike the head portion 123 of the connector 120, thereby transmitting a predetermined amount of force from the impactor 160 to the connector 120. The connector 120 transmits the predetermined force to the implant 200, thereby allowing the implant 200 to be pushed into the bone cavity at the graft site. The predetermined amount of force is at least directly proportional to the weight of the impactor 160 and / or the distance between the stopper 150 and the connector 120.

[0111] If an impactor 160 having two or more subunits (for example, a first subunit 160a and a second subunit 160b) is used, the impactor 160 may be switched between the first and second configurations by the surgeon as needed. In the first configuration of the impactor 160, both the first and second subunits 160a and 160b are connected to each other and configured to slide on the elongated member 140. In the first configuration of the impactor 160, the impactor 160 is used for sclerotic bone.

[0112] In the second configuration of the impactor 160, the second sub-unit 160b is detached from the first sub-unit 160a. Furthermore, the first sub-unit 160a is reversibly docked adjacent to the second stopper 150b. This configures the second sub-unit 160b to slide only over the elongated member 140. In the second configuration of the impactor 160, the impactor 160 is used for osteoporotic bones.

[0113] In step 409, the connector 120 is disconnected from the implant 200. In an exemplary embodiment, the surgeon unscrews the distal end 120b of the connector 120 from the stem portion 203 of the implant 200 in order to disconnect the connector 120 from the implant 200.

[0114] In step 411, device 100 is retrieved from the implantation site, thereby leaving implant 200 inside the bone cavity at the implantation site.

[0115] While implantation procedure 400 has been described as striking the implant 200 with the help of an impactor 160, the implant 200 may also be struck by striking either the stopper 150 or the head portion 123 of the connector 120 with a mallet. If the connector 120 is struck to strike the implant 200, the device 100 may be assembled without, for example, the elongated member 140, the stopper 150 and / or the impactor 160, which is also within the scope of the teachings of this disclosure.

[0116] Although the transplantation procedure 400 has been described as being performed by a surgeon, the transplantation procedure 400 may also be performed by an automated entity, such as a robotic arm (not shown), which is also within the scope of this disclosure.

[0117] Next, this disclosure will be explained through the following examples.

[0118] "Example 1 (Conventional Technology)" A stem prosthesis was inserted into the affected femur to reinforce its strength. A mallet was used by the surgeon to drive the stem prosthesis into the femoral cavity. The prosthesis's position (i.e., anteversion angle) was roughly estimated by visually inspecting the implantation site (eyeball). During the striking of the implant into the bone cavity, the implant's position was distorted. The prosthesis slid and rotated during the striking. Furthermore, the use of a mallet meant that the striking force used to push the prosthesis into the bone cavity was not uniform (varied from surgeon to surgeon), which caused the underlying bone to fracture.

[0119] "Example 2 (This Disclosure)" The device 100 of this disclosure was assembled and used to insert the implant 200 into the bone cavity of the femur. The neck portion 201 of the implant 200 was oriented toward the inside of the adapter 110 based on a first indicator 111c2 (and a second indicator) provided on the third section 111c of the tubular portion 111, and a third indicator 113b (and a fourth indicator 113c) provided on the flange portion 113. The stem portion 203 of the implant 200 was detachably coupled to the adapter 110 by engaging the convex portion 111c1 of the adapter 110 with the respective first recesses 203a of the stem portion 203. The coupling between the adapter 110 and the implant 200 restricted rotation of the implant 200 relative to the adapter 110 (for the entire duration of the implantation procedure). The distal end 120b of the connector 120 was fixed into the second recess 203b of the implant 200 to connect the connector 120 to the implant 200. The impactor 160 was slidably mounted onto the elongated member 140. The distal end 140b of the elongated member 140 was fixed into the cavity 123a of the connector 120 to connect the elongated member 140 to the connector 120.

[0120] The implant 200 was inserted into the bone cavity by pushing the device 100 and the implant 200 until the implant 200 encountered resistance to being pushed. The axial projection 131 of the guide member 130 was detachably coupled to one of the cavities 113a of the adapter 110. The surgeon positioned the guide member 130 parallel to the long axis of the tibia while the tibia was bent and held perpendicular to the femur, thereby setting a predetermined anteversion angle of the implant 200 (for the entire duration of the implantation procedure). The impactor 160 was used slidably to strike the head portion 123 of the connector 120, thereby allowing the implant 200 to be pushed into the bone cavity at the implantation site using a uniform amount of force for each impact of the impactor 160 (which did not differ even after being struck by different surgeons). After implant 200 was fully inserted into the bone cavity of the femur, the surgeon disengaged the distal end 120b of connector 120 from the stem portion 203 of implant 200 to disengage the connector 120 from implant 200. Device 100 was retrieved from the implantation site, thereby leaving implant 200 inside the bone cavity of the femur.

[0121] The scope of the present invention is limited only by the appended claims. More generally, those skilled in the art will readily understand that all parameters, dimensions, materials, and configurations described herein are illustrative, and that actual parameters, dimensions, materials, and / or configurations will depend on the specific one or more applications in which the teachings of the present invention are used.

Claims

1. Device (100), a. An adapter (110) having a proximal end (110a), a distal end (110b), and a lumen (114) extending between the proximal end (110a) and the distal end (110b), A tubular portion (111) including one or more protrusions (111c1) disposed on the distal end (110b) side of the adapter (110), wherein the protrusions (111c1) detachably connect the tubular portion (111) to the implant (200), and the tubular portion (111) at least partially defines the lumen (114) of the adapter (110), A flange portion (113) is coaxially disposed with respect to the tubular portion (111) at the proximal end (110a) of the adapter (110), wherein the flange portion (113) defines at least partially the lumen (114) of the adapter (110), A set of at least one set of multiple cavities (113a) arranged circumferentially in the flange portion (113), wherein each cavity (113a) is offset from the other cavities (113a), and each cavity (113a) of the set of multiple cavities (113a) corresponds to the anteversion angle that the implant (200) coupled to the tubular portion (111) of the adapter (110) makes with respect to the implantation site. An adapter (110) including, b. To set the anteversion angle, a guide member (130) is detachably coupled to at least one of the cavities (113a) of the flange portion (113) of the adapter (110), c. A connector (120) having a proximal end (120a) and a distal end (120b), A head portion (123) is disposed at the proximal end (120a) of the connector (120), A shank portion (121) is at least partially disposed within the lumen (114) of the adapter (110) through the flange portion (113), wherein the distal end (120b) of the shank portion (121) is operably coupled to the implant (200) for insertion into the bone cavity. A connector (120) including A device (100) comprising the above.

2. The aforementioned device (100) a. An elongated member (140) having a proximal end (140a) and a distal end (140b), wherein the distal end (140b) of the elongated member (140) is connected to the head portion (123) of the connector (120), b. One or more stoppers (150) connected to the proximal end (140a) of the elongated member (140), c. At least one impactor (160) slidably disposed around the elongated member (140) and The device (100) according to claim 1, including

3. The device (100) according to claim 1, wherein the tubular portion (111) and the flange portion (113) of the adapter (110) are either detachably coupled or form an integral structure.

4. The device (100) according to claim 1, wherein the shank portion (121) and the head portion (123) of the connector (120) are either detachably coupled or form an integral structure.

5. The device (100) according to claim 1, wherein the second engaging portion (121a) of the shank portion (121) is configured to temporarily engage with the first engaging portion (111a1) of the adapter (110).

6. The device (100) according to claim 1, wherein the tubular portion (111) includes a second section (111b) having one or more notches (111b1) in a predetermined shape and angular direction, which allows the connector (120) to rotate freely within the lumen (114) of the adapter (110) without the connector (120) coming out of the lumen (114) of the adapter (110).

7. The device (100) according to claim 1, wherein the tubular portion (111) is provided with at least one first indicator (111c2) for correctly determining the orientation of the implant (200) relative to the inside of the adapter (110).

8. The device (100) according to claim 1, wherein the flange portion (113) is provided with at least one of a third indicator (113b) that points to the inside of the adapter (110) and a fourth indicator (113c) that points to the outside of the adapter (110).

9. The device (100) according to claim 1, wherein the anteversion angle corresponding to each of the cavities (113a) increases or decreases from the inside to the outside of the adapter (110).

10. The device (100) according to claim 1, wherein the at least one set of the plurality of cavities (113a) includes a first set of cavities (113a) and a second set of cavities (113a) disposed on the diametrically opposite side of the first set of cavities (113a).

11. The device (100) according to claim 1, wherein the second engaging portion (121a) of the shank portion (121) is disposed either proximal or distal to the first engaging portion (111a1) of the adapter (110).

12. The device (100) according to claim 1, wherein the distal end (140b) of the elongated member (140) is coupled to the cavity (123a) of the head portion (123) of the connector (120).

13. The device (100) according to claim 2, wherein the stopper (150) includes a first stopper (150a) disposed proximal to a second stopper (150b).

14. The impactor (160) a. The first subunit (160a) and b. A second sub-unit (160b) detachably coupled to the first sub-unit (160a), c. A docking means (161) adjacent to the stopper (150) for reversibly docking the first sub-unit (160a) to the elongated member (140) and The device (100) according to claim 2, including the following:

15. a. The device (100) described in any one of claims 1 to 14, b. An implant (200) having a neck portion (201) and a stem portion (203), wherein the stem portion (203) has one or more first recesses (203a) and second recesses (203b), the first recess (203a) of the stem portion (203) is detachably coupled to a corresponding protrusion (111c1) of the adapter (110), and the second recess (203b) of the stem portion (203) is operably coupled to the distal end (120b) of the connector (120), and An assembly comprising:

Images