Improvements in and relating to surgical component attachment systems - Patents.com

Abstract

A surgical component attachment system is provided that can include a surgical instrument (5) and an intermediate component (20). The surgical instrument can have a proximal end and a distal end (7) that can provide a first portion of an attachment (9). The intermediate component can have a proximal end that can provide a second portion of an attachment (22) and a distal end (35) that can include a second attachment first portion (36, 38a, 38b), where the first portion of the attachment and the second portion of the attachment are removable.

Description

[Technical field]

[0001] This application claims priority to UK Patent Application No. 2205303.7, filed April 11, 2022, which is incorporated by reference in its entirety.

[0002] FIELD OF THEINVENTION The present disclosure relates generally to orthopedic impaction devices, kits including such devices, and methods of using such devices, and more specifically to orthopedic impaction devices, kits including such devices, and methods of using such devices. The present disclosure also has broader relevance in the attachment of other surgical instruments. [Background technology]

[0003] Arthroplasty is a well-known surgical procedure in which diseased and / or damaged natural joints are replaced with artificial joints. Examples include artificial knee and hip joint implants. For example, during the insertion and positioning of a femoral implant into the femur, an impaction tool is often engaged with the implant and then impacted to move the implant as desired. Summary of the Invention [Means for solving the problem]

[0004] According to a first aspect of the present disclosure, there is provided a surgical component attachment system comprising: a surgical instrument having a proximal end and a distal end, the distal end of the surgical instrument providing a first portion of the attachment; an intermediate component having a proximal end, the proximal end of the intermediate component providing a second portion of the fitting, and having a distal end, the distal end of the intermediate component providing a first portion of the second fitting, wherein the first portion of the fitting and the second portion of the fitting are removable.

[0005] The intermediate component may be a single use component during a procedure. The surgical instrument may be a multiple use component during a procedure.

[0006] The intermediate components may be used once and then discarded. The surgical instruments may be used once and then sterilized and reused, for example with new intermediate components.

[0007] The intermediate component may include one or more features that prevent the intermediate component from being a multiple-use component within a procedure.

[0008] The one or more characteristics may be susceptible to change under one or more conditions. The one or more conditions may be one or more conditions that the intermediate component experiences when prepared for reuse. The one or more conditions may be cleaning temperatures and / or exposure to one or more chemicals and / or exposure to disinfection temperatures and / or exposure to sterilization temperatures.

[0009] The one or more characteristics may be one or more visual indicia. The one or more visual indicia may be the presence of a visual indicia and / or the absence of a visual indicia. The one or more visual indicia may be the presence of a color. The one or more visual indicia may be a color change from a first color to a second color. The one or more marks may be a warning.

[0010] The one or more features may be a changeable portion of the intermediate component. The one or more features may be a portion of the intermediate component that changes profile or shape, for example, to prevent the intermediate component from being connected to a surgical component. The one or more features may be a portion of the intermediate component that ceases to exist, for example, a retaining element is no longer present. The one or more features may be a portion of the intermediate component that ceases to function, for example, to retain the intermediate component on a surgical instrument.

[0011] The removable attachment may be adapted to restrain axial movement of one or both of the surgical component and the intermediate component relative to one another in an axial direction in the engaged state. The removable attachment may be adapted to be sufficient to hold the intermediate component on the surgical instrument, for example during manipulation of the surgical instrument, or vice versa. The removable attachment may be adapted to provide insufficient restraint to stop a user from pulling the intermediate component away from the surgical instrument.

[0012] In a potential alternative, the removable attachment may be adapted to provide a first portion of the attachment and a second portion of the attachment in an engaged state to constrain axial movement of the surgical component and the intermediate component relative to and toward one another. In an alternative, in an engaged state, the removable attachment may be adapted not to constrain axial movement of the surgical component and the intermediate component relative to and away from one another.

[0013] The intermediate component may be a cap element. The intermediate component may provide a body portion. The intermediate component may provide a recess, such as a bore, for example, a closed-end bore, potentially within the body portion. The recess or bore may have a longitudinal axis, for example, aligned with the longitudinal axis of the intermediate component and / or the longitudinal axis of the surgical instrument. The recess or bore may be defined by one or more of a side wall, a bottom wall, and a transition surface, such as a fillet, potentially between the side wall and the bottom wall. The bottom wall may be substantially perpendicular to the longitudinal axis of the recess or bore or to the longitudinal axis of the intermediate component.

[0014] The recess or bore may have a mouth, which is preferably outwardly flared or tapered.

[0015] The recess or bore may have a cross section that is taken as perpendicular to a longitudinal axis of the recess or bore and / or the intermediate element.

[0016] The intermediate component, e.g., the body portion, may provide an outer wall. The intermediate component, e.g., the body portion, may be a right circular cylinder. One or more locations on the exterior of the intermediate component, such as the body portion, may include a combination of grooves and ridges or other recesses / protrusions, e.g., to aid in gripping.

[0017] The recess or bore may comprise one or more retaining elements. The recess or bore may comprise one or more protrusions extending inwardly, for example radially inwardly. The protrusions may be in the form of ribs or bumps, for example ribs or bumps of rounded cross section.

[0018] The retaining element(s), such as protrusion(s), may extend around the inner circumference of the recess or bore at some locations. The retaining element(s) may be provided at a fixed axial distance from the proximal end of the intermediate element and / or from the distal end of the intermediate element. The retaining element(s) may be provided at a fixed depth relative to the mouth of the recess or bore and / or at a fixed height relative to the bottom wall of the recess or bore.

[0019] The distal end of the intermediate element may provide a first portion of the second fitting including one or more protrusions. One or more or all of the protrusions may extend in a distal direction, for example parallel to a longitudinal axis of the recess or bore and / or parallel to a longitudinal axis of the intermediate element. The first portion of the second fitting may include a primary protrusion and one or more secondary protrusions.

[0020] The primary projection may extend along the longitudinal axis of the recess or bore and / or along the longitudinal axis of the intermediate element. The primary projection may be provided between two or more secondary projections, for example between a pair of secondary projections. One or more or all of the secondary projections may extend parallel to the longitudinal axis of the recess or bore and / or parallel to the longitudinal axis of the intermediate element. One, two or all of the secondary projections may be teeth.

[0021] Two or more protrusions may be separated from one another by a gap, e.g. a recess. The gap or recess may be curved, e.g. with a semicircular cross section. The gap or recess may have a reduced axial extent in the distal direction compared to the protrusions. The main protrusion may in each case be separated from the two secondary protrusions by a gap or recess.

[0022] The first portion of the second fitting may have a greater extent perpendicular to the longitudinal axis of the recess or bore and / or the longitudinal axis of the intermediate element in a first direction compared to the extent in a second direction. The second direction may be perpendicular to the first direction. The first direction may be the medial direction and / or the lateral direction and / or the second direction may be the forward direction and / or the rearward direction. The first portion of the second fitting may have a greater extent perpendicular to the longitudinal axis of the recess or bore and / or the longitudinal axis of the intermediate element in the medial direction and / or the lateral direction compared to the extent in the forward direction and / or the rearward direction. The medial direction and / or the lateral direction extent may be greater than 60% of the maximum radial extent of the intermediate component. The forward and / or rearward direction extent may be less than 40% of the maximum radial extent of the intermediate component.

[0023] In one embodiment, a first portion of the recess or bore may have a cross-section that decreases away from the proximal end. The first portion may define the mouth of the recess or bore. A second portion of the recess or bore may have a cross-section that decreases away from the proximal end and then increases again away from the proximal end. The second portion may define one or more retention elements. A third portion of the recess or bore may have a decreasing cross-section, for example a slight taper. The first portion may form less than 20% of the depth of the recess or bore. The second portion may form less than 20% of the depth of the recess or bore. The third portion may provide at least 65% of the depth of the recess or bore.

[0024] In one embodiment, the recess or bore is surrounded by the body portion and the recess or bore has a maximum radial extent that is at least 65% of the maximum radial extent of the body portion. The recess or bore may have a circular cross-section and / or the body portion may have a circular cross-section.

[0025] In one embodiment, a recess or bore may be provided in the body portion and the recess or bore may have a maximum depth that is less than 70% of the axial length of the intermediate component from the proximal end to the distal end.

[0026] In a second embodiment, a first portion of the recess or bore may have a cross-section that decreases away from the proximal end. The first portion may define the mouth of the recess or bore. A second portion of the recess or bore may have a cross-section that decreases away from the proximal end and then increases again away from the proximal end. The second portion may define one or more retention elements. A third portion of the recess or bore may have a decreasing cross-section, for example a slight taper. The first portion may form less than 20% of the depth of the recess or bore. The second portion may form less than 20% of the depth of the recess or bore. The third portion may provide at least 65% of the depth of the recess or bore.

[0027] In a second embodiment, the recess or bore is surrounded by the body portion and the recess or bore has a maximum radial extent that is at least 35% of the maximum radial extent of the body portion. The recess or bore may have a circular cross-section and / or the body portion may have a circular cross-section.

[0028] In a second embodiment, a recess or bore may be provided in the body portion and the recess or bore may have a maximum depth that is less than 70% of the axial length of the intermediate component from the proximal end to the distal end.

[0029] In a third embodiment, a first portion of the recess or bore may have a cross section that decreases away from the proximal end. The first portion may define the mouth of the recess or bore. A second portion of the recess or bore may not be provided, having a cross section that decreases away from the proximal end and then increases again away from the proximal end. A second portion may not be provided, which may define one or more retention elements. The second portion of the recess or bore may have a decreasing cross section, for example a slight taper. The first portion may form less than 20% of the depth of the recess or bore. The second portion may form at least 75% of the depth of the recess or bore.

[0030] In a third embodiment, the recess or bore is surrounded by the body portion and the recess or bore has a maximum radial extent that is at least 35% of the maximum radial extent of the body portion. The recess or bore may have a circular cross-section and / or the body portion may have a circular cross-section.

[0031] In a third embodiment, a recess or bore may be provided in the body portion and the recess or bore may have a maximum depth that is less than 70% of the axial length of the intermediate component from the proximal end to the distal end.

[0032] In a third embodiment, an interference fit may be used between the first portion of the fitting and the second portion of the fitting.

[0033] In a fourth embodiment, the fitting may be a bayonet-type fitting. A female portion having one or more radially extending lugs or pins, e.g., inwardly extending lugs or pins, may be provided on the intermediate component. A male portion having one or more slots, e.g., recessed into an exterior surface, for receiving the one or more lugs or pins may be provided on the surgical instrument.

[0034] In a fifth embodiment, the fitting may be a threaded type fitting. A male portion having an external thread may be provided on the surgical instrument. A female portion having an internal thread may be provided on the intermediate component.

[0035] In a sixth embodiment, the attachment may be a complementary surface type attachment. For example, a complementary protrusion profile may be provided on one of the surgical instrument and the intermediate component, and a complementary recess profile may be provided on the other of the surgical instrument and the intermediate component. The complementary protrusion profile may be, for example, a cross-shaped protrusion having one or more or all of its side walls substantially parallel to the longitudinal axis of the surgical instrument or intermediate component on which the profile is provided. The complementary recess profile may be, for example, a cross-shaped recess having one or more or all of its side walls substantially parallel to the longitudinal axis of the surgical instrument or intermediate component on which the profile is provided.

[0036] The surgical instrument may be an orthopedic surgical instrument. The surgical instrument may be an impactor instrument. The surgical instrument may be used to apply an axial or substantially axial force, for example, to the implant and / or further surgical instrument. The surgical instrument may be used to apply a lateral force, for example medially and / or laterally, instead of or in addition to the axial or substantially axial force.

[0037] The axial force may vary, for example, due to another instrument impacting the surgical instrument. A force, such as an axial force, may be applied to a proximal end of the surgical instrument. Another instrument may apply a force to the surgical instrument, then through an intermediate component, and then to the implant. Another instrument may apply a force to the surgical instrument, then through an intermediate component, then through a further surgical instrument, and then to the implant.

[0038] The impactor tool may be for an implant. The implant may be a femoral implant. The implant may be an acetabular cup. The implant may be an acetabular shell.

[0039] The distal end of the surgical instrument may be configured to engage the intermediate component by an attachment, such as the proximal end of the intermediate component.

[0040] The distal end of the surgical instrument may include a stem. The stem may have the same cross-sectional profile as other adjacent portions of the surgical instrument. The stem may be, for example, a shaft having a circular cross-section. The stem may have a longitudinal axis aligned, for example, with the longitudinal axis of at least the adjacent portions of the surgical instrument and / or with the longitudinal axis of the intermediate component in use. The stem may be defined by one or more of a side wall, an end wall, and a transition surface, such as a fillet, potentially between the side wall and the end wall. The end wall may be substantially perpendicular to the longitudinal axis of the stem and / or to the longitudinal axis of the surgical instrument and / or to the intermediate component in use.

[0041] The stem may have a cross-section that is considered perpendicular to the longitudinal axis of the stem and / or the adjacent portion of the surgical instrument and / or to the intermediate element in use.

[0042] The stem may provide an outer wall. The stem may be a right circular cylinder.

[0043] The stem may include one or more stem retaining elements. The stem may include one or more recesses extending inwardly, for example radially inwardly. The recesses may be in the form of grooves, for example rounded grooves.

[0044] The stem retaining element(s), such as the recess(es), may extend around the circumference of the stem. The stem retaining element(s) may be provided at a fixed axial distance from the distal end of the stem.

[0045] The stem retaining element(s) may be provided a distance from the distal end of the surgical component.

[0046] The stem and / or adjacent portion of the surgical instrument may have a longitudinal axis that is angled or offset relative to the longitudinal axis of another portion of the surgical instrument. The proximal end of the surgical instrument may be offset from the longitudinal axis of the stem and / or adjacent portion.

[0047] At least a portion of the outer profile of the stem may be complementary to at least a portion of the inner profile of the intermediate component. An end face of the stem may be complementary to a bottom wall of a recess or bore in the intermediate component. A side wall of the stem may be at least partially complementary to a side wall of the bore or recess.

[0048] At least a portion of the stem retaining element may be complementary to at least a portion of the retaining element of the intermediate component.At least a portion of the retaining element of the intermediate component may be received within at least a portion of the stem retaining component.

[0049] The axial distance of the stem retaining element(s) may be complementary to the axial distance of the intermediate component's retaining element(s) from the bottom wall of the recess or bore.

[0050] The fitting may include a male portion and a female portion. The male portion may be provided on the surgical instrument. The female portion may be provided on the intermediate component.

[0051] The first portion of the fitting may be complementary to the second portion of the fitting.

[0052] The second fitting may include a male portion and a female portion. The male portion may be provided on the intermediate component. The female portion may be provided on the further surgical component and / or the implant.

[0053] The first portion of the second fitting may be complementary to the second portion of the second fitting.

[0054] The second portion of the fixture may be complementary to the first portion of the fixture. The second portion of the fixture may include a recess. The recess may be at least partially complementary to the protrusion of the first portion of the fixture.

[0055] In one embodiment, in particular, the portion of the stem received within the intermediate component may provide a first portion of the stem that may have a cross-section that increases away from the distal end. The first portion may define an end for the stem. The second portion of the stem may have an increasing cross-section, for example a slight taper. The third portion of the stem may have a cross-section that decreases away from the distal end and then increases again away from the distal end. The third portion may define one or more stem retaining elements. The fourth portion of the stem may have a cross-section that increases, for example with a slight taper, or is constant. The first portion may form less than 20% of the portion of the stem that is received within the intermediate component. The second portion may form more than 50% of the portion of the stem that is received within the intermediate component. The third portion may form less than 20% of the portion of the stem that is received within the intermediate component. The fourth portion may provide less than 20% of the portion of the stem that is received within the intermediate component.

[0056] In the second embodiment, in particular, the portion of the stem received in the intermediate component may provide a first portion of the stem that may have a cross section that increases away from the distal end. The first portion may define an end for the stem. The second portion of the stem may have an increasing cross section, for example a slight taper. The third portion of the stem may have a cross section that decreases away from the distal end and then increases again away from the distal end. The third portion may define one or more stem retaining elements. The fourth portion of the stem may be provided intermediate the third portion and a fifth portion that is not received in the intermediate component. The fifth portion may have a cross section that is greater than the first portion and / or the second portion and / or the third portion and / or the fourth portion. The fifth portion may have a cross section that is within 80% of the cross section of the adjacent portions of the surgical instrument. The first portion may form less than 20% of the portion of the stem that is received in the intermediate component. The second portion may form more than 50% of the portion of the stem that is received in the intermediate component. The third portion may form less than 20% of the portion of the stem that is received within the intermediate component. The fourth portion may provide less than 20% of the portion of the stem that is received within the intermediate component. The fifth portion may not be received within the intermediate component.

[0057] In the third embodiment, in particular, the portion of the stem received in the intermediate component may provide a first portion of the stem that may have a cross section that increases away from the distal end. The first portion may define an end for the stem. The second portion of the stem may have an increasing cross section, for example a slight taper. A third portion of the stem may not be provided, the cross section of which decreases away from the distal end and then increases again away from the distal end. The third portion of the stem may be provided intermediate the second portion and a fourth portion that is not received in the intermediate component. The fourth portion may have a cross section that is larger than the first portion and / or the second portion and / or the third portion. The fourth portion may have a cross section that is within 80% of the cross section of the adjacent portions of the surgical instrument. The first portion may form less than 20% of the portion of the stem that is received in the intermediate component. The second portion may form more than 50% of the portion of the stem that is received in the intermediate component. The third portion may form less than 20% of the portion of the stem that is received in the intermediate component. The fifth portion may not be received within the intermediate component.

[0058] The intermediate component may be formed from one or more of stainless steel, tungsten carbide, titanium, ceramic, or plastic. Possible ceramics may include aluminum oxide and calcium phosphate. Possible plastic materials may include ultra-high molecular weight polyethylene [UHMW], polycarbonate, acrylonitrile butadiene styrene [ABS], and polydicyclopentadiene polymer [PDCPD]. The intermediate component may include a coating, for example, covering the impact bearing surface.

[0059] Any feature or combination of features referenced as part of the intermediate component may alternatively be provided on the surgical component and / or the further surgical component. Any feature or combination of features referenced as part of the surgical instrument may alternatively be provided on the intermediate component. Any combination of features described as being provided on the surgical instrument and the intermediate component may be provided in the reverse configuration, where the surgical instrument feature(s) are transferred to the intermediate component and the intermediate component features are transferred to the surgical instrument.

[0060] The first aspect may include any of the features and possibilities or options described elsewhere herein, including other aspects.

[0061] According to a second aspect of the present disclosure, there is provided an intermediate component potentially for use in a surgical component attachment system, the intermediate component having a proximal end, the proximal end of the intermediate component providing a second portion of a fitting potentially for use in connecting to a surgical component, the intermediate component having a distal end, the distal end of the intermediate component comprising a first portion of a second fitting potentially for use in connecting to a surgical implant, the second portion of the fitting and the first portion of the second fitting being removable fittings.

[0062] Any feature or combination of features referenced as part of the intermediate component may alternatively be provided on the surgical component and / or the further surgical component. Any feature or combination of features referenced as part of the surgical instrument may alternatively be provided on the intermediate component. Any combination of features described as being provided on the surgical instrument and the intermediate component may be provided in the reverse configuration, where the surgical instrument feature(s) are transferred to the intermediate component and the intermediate component features are transferred to the surgical instrument.

[0063] The second aspect may include any of the features and possibilities or options described elsewhere herein, including other aspects.

[0064] According to a third aspect of the present disclosure, there is provided a surgical instrument, particularly for use in a surgical component attachment system, the surgical instrument having a proximal end and a distal end, the distal end of the surgical instrument providing a first portion of an attachment, the first portion of the attachment being a removable attachment.

[0065] Any feature or combination of features referenced as part of the intermediate component may alternatively be provided on the surgical component and / or the further surgical component. Any feature or combination of features referenced as part of the surgical instrument may alternatively be provided on the intermediate component. Any combination of features described as being provided on the surgical instrument and the intermediate component may be provided in the reverse configuration, where the surgical instrument feature(s) are transferred to the intermediate component and the intermediate component features are transferred to the surgical instrument.

[0066] The third aspect may include any of the features and possibilities or options described elsewhere herein, including other aspects.

[0067] According to a fourth aspect of the present disclosure, there is provided a kit, the kit comprising: at least one surgical instrument having a proximal end and a distal end, the distal end of the surgical instrument providing a first portion of the attachment; at least one intermediate component, the intermediate component having a proximal end, the proximal end of the intermediate component providing a second portion of the fitting, and the intermediate component having a distal end, the distal end of the intermediate component providing a first portion of the second fitting, wherein the first portion of the fitting and the second portion of the fitting are removable.

[0068] Any feature or combination of features referenced as part of the intermediate component may alternatively be provided on the surgical component and / or the further surgical component. Any feature or combination of features referenced as part of the surgical instrument may alternatively be provided on the intermediate component. Any combination of features described as being provided on the surgical instrument and the intermediate component may be provided in the reverse configuration, where the surgical instrument feature(s) are transferred to the intermediate component and the intermediate component features are transferred to the surgical instrument.

[0069] The fourth aspect may include any of the features and possibilities or options described elsewhere herein, including other aspects.

[0070] According to a fifth aspect of the present invention there is provided a method of mounting a surgical instrument using a surgical component mounting system, the method comprising: providing a surgical instrument having a proximal end and a distal end, the distal end of the surgical instrument providing a first portion of the attachment; providing an intermediate component, the intermediate component having a proximal end, the proximal end of the intermediate component providing a second portion of the fitting, the intermediate component having a distal end, the distal end of the intermediate component comprising a first portion of the second fitting; connecting the first portion of the fixture and the second portion of the fixture, the connection being removable.

[0071] The method may include a detached state for the surgical instrument and the intermediate component, where the surgical instrument and the intermediate component are separated from one another. The method may include, for example, bringing a distal end of the surgical instrument and a proximal end of the intermediate component into proximity to provide the detached state.

[0072] The method may include providing a contact condition for the surgical instrument and the intermediate component. The method may include, for example, inserting a portion of one of the surgical instrument and the intermediate component into the other of the intermediate component and the surgical instrument to provide the contact condition. The method may include, for example, inserting a portion of the surgical instrument into the intermediate component to provide the contact condition.

[0073] The method may include inserting one of the surgical instrument and intermediate component into the other until, for example, an end face of one abuts a bottom wall of the other. The method may include inserting one of the surgical instrument and intermediate component into the other until, for example, further insertion is not possible to provide the engaged condition.

[0074] In the engaged state, engagement can be provided between one or more retaining elements on the surgical instrument and / or one or more retaining elements on the intermediate component.

[0075] The method may include, for example, relative movement between the surgical instrument and the intermediate component until one or more retaining elements on the surgical instrument and / or one or more retaining elements on the intermediate component are engaged to provide an engaged condition, e.g., a groove on one may engage a rib on the other.

[0076] In the engaged state, the engagement may be provided by an interference fit between the surgical instrument and the intermediate component.

[0077] In the engaged state, axial movement of the surgical component and the intermediate component relative to one another may be constrained in one or both axial directions. The constraint may be sufficient to hold the intermediate component on the surgical instrument, or vice versa. The constraint may be insufficient to stop a user from pulling the intermediate component away from the surgical instrument.

[0078] The method may include a second detached state for the combination of the surgical instrument and the intermediate component, the combination being separated from the further surgical instrument and / or implant. The method may include, for example, bringing a distal end of the intermediate component and a proximal end of the further surgical instrument and / or implant into approximation to provide the second detached state.

[0079] The method may include a second contact state between the combination of the surgical instrument and the intermediate component and a further surgical instrument and / or implant. The method may include, for example, inserting a portion of one of the further surgical instrument and / or implant into the intermediate component to provide the second contact state. The method may include, for example, inserting a portion of the intermediate component into the further surgical instrument and / or implant to provide the second contact state.

[0080] The method may include a second engaged state. The method may include, for example, inserting the intermediate component into a further surgical instrument and / or implant until an end of a projection of one abuts a bottom wall of the other. The method may include, for example, inserting the further surgical instrument and / or implant into the intermediate component until an end of a projection of one abuts a bottom wall of the other. The method may include, for example, inserting one into the other until further insertion is not possible to provide the second engaged state.

[0081] In the second engaged state, further axial movement of the combination of the surgical instrument and the intermediate component, and the further surgical instrument and / or implant, may be resisted. In the second engaged state, axial movement of the combination of the surgical instrument and the intermediate component away from the further surgical instrument and / or implant may not be resisted.

[0082] The method may further include moving and / or adjusting the position of the additional surgical instrument and / or implant.

[0083] Any feature or combination of features referenced as part of the intermediate component may alternatively be provided on the surgical component and / or the further surgical component. Any feature or combination of features referenced as part of the surgical instrument may alternatively be provided on the intermediate component. Any combination of features described as being provided on the surgical instrument and the intermediate component may be provided in the reverse configuration, where the surgical instrument feature(s) are transferred to the intermediate component and the intermediate component features are transferred to the surgical instrument.

[0084] The fifth aspect may include any of the features and possibilities or options described elsewhere herein, including other aspects. [Brief description of the drawings]

[0085] Various embodiments of the present disclosure will now be described, by way of example only, with reference to the accompanying drawings, in which: [Figure 1a] 13 shows the distal end of the impaction device adjacent to the femoral component without the cap. [Figure 1b] 1 illustrates a distal end of an impact device engaged with a femoral component within a femur. [Figure 2a] 1A and 1B are front and rear views of a first embodiment of a cap according to the present disclosure. [Figure 2b] FIG. 2b is an inner or outer view of the cap of FIG. 2a. [Figure 2c] FIG. 2C is a partial bottom view of the cap of FIGS. 2a and 2b. [Figure 3a] FIG. 2C is a front or rear view of a distal end of an impingement device for use with the caps of FIGS. 2a, 2b and 2c. [Figure 3b] FIG. 3b is a bottom view of the distal end of the impact device of FIG. 3a. [Figure 4a] 11A and 11B are front and rear views of a cap according to a second embodiment of the present disclosure. [Figure 4b] FIG. 4b is an inner or outer view of the cap of FIG. 4a. [Figure 5a]Front or rear view of the distal end of the collision device for use with the caps of FIGS. 4a and 4b. [Figure 5b] Bottom view of the distal end of the collision device of FIG. 3a. [Figure 6a] Front or rear view of the cap of the third embodiment according to the present disclosure. [Figure 6b] Is an inner or outer view of the cap of FIG. 6a. [Figure 7a] Front or rear view of the distal end of the collision device for use with the caps of FIGS. 7a and 7b. [Figure 7b] Bottom view of the distal end of the collision device of FIG. 3a. [Figure 8a] Front or rear view of the cap of the fourth embodiment according to the present disclosure. [Figure 8b] Bottom view of the cap of FIG. 8a. [Figure 9a] Front or rear view of the distal portion of the collision device for use with the caps of FIGS. 8a and 8b. [Figure 9b] Bottom view of the distal end of the collision device of FIG. 9a. [Figure 10a] Front or rear view of the cap of the fifth embodiment according to the present disclosure. [Figure 10b] Bottom view of the cap of FIG. 10a. [Figure 11a] Front or rear view of the distal portion of the collision device for use with the caps of FIGS. 10a and 10b. [Figure 11b] Bottom view of the cap of FIG. 11a. [Figure 12a] Front or rear view of the cap of the sixth embodiment according to the present disclosure. [Figure 12b] Bottom view of the cap of FIG. 12a. [Figure 13a] Front or rear view of the distal portion of the collision device for use with the caps of FIGS. 12a and 12b. [Figure 13b] Bottom view of the distal end of the collision device of FIG. 12a. [Figure 14] For dimensional guidance, reference is made to various exemplary parts of a cap according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0086] While the concepts of the present disclosure are susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and are herein described in detail, however, it should be understood that it is not the intention of this disclosure to limit the concepts of the present disclosure to the particular forms disclosed, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure and the appended claims.

[0087] Terms denoting anatomical references, such as anterior, posterior, medial, lateral, superior, inferior, etc., may be used throughout this specification with respect to the orthopedic implants or prostheses and surgical instruments described herein, as well as with reference to the patient's natural anatomy. Such terms have well-understood meanings both in the study of anatomy and in the field of orthopedic surgery. Use of such anatomical reference terms in the written description and claims is intended to be consistent with their well-understood meanings, unless otherwise specified.

[0088] Impingement devices are used in a variety of surgical procedures, including orthopedic procedures, to apply a force to another device or implant to insert or otherwise move the other device or implant. The proximal end of the impingement device is designed to apply the impact force during use. The distal end of the impingement device is designed to abut, and more often engage, the proximal end of the other device or implant.

[0089] An example of such an approach in an orthopaedic surgical procedure is shown in Figures 1a and 1b in relation to a femoral implant 1 being moved relative to a femur 3. An impaction device 5 is provided with a pair of teeth 9 at a distal end 7. The femoral implant 1 is provided with a complementary recess 11. The impaction device 5 is manipulated until the teeth 9 are aligned with corresponding portions 13 of the complementary recess 11 (Figure 1a). The impaction device 5 is then advanced towards the femoral implant 1 such that the distal end 7 of the impaction device 5 enters the complementary recess 11. Once thus engaged (Figure 1b), impact forces can be applied to the proximal end (not shown) of the impaction device 5 and these are transferred to the femoral implant 1 via the distal end 7.

[0090] It is desirable to provide an alternative engagement between the distal end of the impact device and another device or implant, for reasons including reducing the risk of the impact device (such as the stem inserter tip) breaking during operation and reducing deformation around the impact seat on the implant.

[0091] In the intended application, material-level impact forces are applied to the impactor device and transferred to the implant. Misalignment of the two, misconnection of the two, or other factors can all lead to lateral components to the force. These lateral components, when used repeatedly, can create a risk of fatigue cracking at the interface of the distal end of the surgical instrument, even if the rest of the impactor device has material life remaining.

[0092] The approach described in the following embodiments allows for greater control of the number of times the impact device-implant interface is used to apply an impact force to the implant and therefore reduce any risk of fatigue cracking of the surgical instrument. This is achieved by providing an intermediate component between the surgical instrument and a further surgical instrument or implant to which the impact force is applied.

[0093] The approach described below is also beneficial because it allows the intermediate component to be transformed into an additional surgical instrument or implant attachment means, allowing a common surgical instrument (such as a stem inserter shaft) to be used for a wider range of products, with the intermediate component acting as an adapter function.

[0094] The intermediate component is able to use existing engagement with additional surgical instruments and / or implants, but without risk of fatigue cracks and the like, since the intermediate component can be discarded after use.

[0095] The intermediate component allows for a more resilient interface to be provided between the surgical instrument and the intermediate component such that the surgical instrument is more resistant to any lateral force components and / or is less susceptible to fatigue.

[0096] As shown in Figures 2a, 2b and 2c, an intermediate component of the type of cap element 20 may be provided for positioning between the distal end of the impact device and another device or implant during use, particularly when the impact force is being transmitted to another device or implant.

[0097] The cap element 20 has a bore 22 defined by a sidewall 24, a bottom wall 26 and a fillet 28 therebetween. The sidewall 24 includes a rib 30 that extends around the inner circumference of the bore 22. The rib 30 is disposed at a constant depth relative to a mouth 32 of the bore 22 and at a constant height relative to a bottom wall 26 of the bore 22. The mouth 32 is outwardly tapered to aid in the introduction of an impaction device.

[0098] The underside 34 of the cap element 20, and thus the distal end 35 of the cap element 20, is provided with a tip 36, either side of which are provided with teeth 38a, 38b separated from the tip 36 by a recess 40. The recess 40 is formed from two portions of an annulus. The tip 36 has a greater extent medially-laterally [Fig. 2a] than anteriorly-posteriorly [Fig. 2b].

[0099] The outer wall 42 of the cap element 20 is a right cylinder and may include a combination of grooves and ridges or other recesses / protrusions to aid in gripping. The bore 22 has a circular cross section relative to the longitudinal axis XX of the cap element 20. The bore 22 is adapted to receive a portion of an impactor device (FIGS. 3a and 3b). The diameter of the bore 22 can be easily configured during manufacture to match the cap element 20 with a particular impaction device 52 from a wide variety of impaction devices having distal ends 50 of different diameters.

[0100] 3a shows a distal end 50 of an impaction device 52. In this embodiment, a cylindrical end portion 54 is provided at the distal end 50, the longitudinal axis of which may be offset relative to the longitudinal axis of an intermediate portion 56, for example, to provide an offset to an impact portion (not shown) at the proximal end of the impaction device 52.

[0101] The outer surface 60 defines a groove 58 which extends around the entire circumference of the distal end 50 and is spaced from an end face 62 of the distal end 50 .

[0102] End portion 54 is configured to be complementary to bore 22 in cap element 20. End portion 54 thus has a radius that is closer to the radius of bore 22, a chamfered edge 56 that is closer to the tolerance than the profile of fillet 28, and a height of groove 58 relative to end face 62 that is closer to the tolerance than the height of rib 30 relative to bottom wall 26 of bore 22. The fillets and radii provided act as stress reducing features.

[0103] In use, the cap element 20 and the distal end 50 of the impaction device are brought close together in a disengaged state, and then the distal end 50 is inserted into the bore 22. The insertion continues until the end face 62 abuts the bottom wall 26, preventing further insertion. In this position, the ribs 30 are received and attached within the complementary profile of the grooves 58. Thus, the cap element 20 and the impaction device 52 are clipped together. The cooperation of the ribs 30 and the grooves 58 resists axial movement of the cap element 20 relative to the impaction device 52. The cap element 20 is releasably retained on the impaction device 52.

[0104] Alternative embodiments are possible that comprise an inserted state without an attached state, so that there is no or little resistance to axial movement of the cap elements 20 relative to the impact device 52 away from each other again.

[0105] In this attached state, the distal end 35 of the cap element 20 is ready to be aligned with, inserted into, and impacted by another device or implant in a manner similar to that described above with respect to Figures 1a and 1b. To do so, the tip of the cap element 20 is brought into proximity with the other device or implant, and then the tip 36 and teeth 38a, 38b are aligned with complementary recesses in the other device or implant, and then the tip 36 and teeth 38a, 38b are inserted into the complementary recesses. Once inserted, a secure and stable interface is provided between the impact device and the other device or implant, so that an impact force can be successfully applied.

[0106] The cap element 20 can be versatile in its profile while still nicely integrating the distal end 7 with the impingement device 5, and thus is suitable for use with a wide variety of impingement devices 5 with simple modifications. In this manner, the cap element 20 can be reconfigured for different geometries of interfaces with the impingement device and / or different geometries of interfaces with another device or implant. For example, the depth of the bore 22 can be easily increased or decreased and / or the diameter can be reconfigured and / or the groove / recess combination can have a different profile without a full scale redesign of the cap element 20.

[0107] The cap element 20 is intended to be used for only a single surgical procedure. The impingement device 52 is intended to be reused in multiple procedures.

[0108] By being single use only, cap element 20 is designed to significantly reduce the risk of distal tip breakage during surgery. As a single use cap element 20, cap element 20 can be manufactured from a softer material than that used in impingement device 5, thus reducing any deformation of additional surgical instruments and / or implants (e.g., stem removal bores of implants) that cap element 20 comes into contact with.

[0109] 4a and 4b show another embodiment of a cap element 20, in this case providing an alternative "click together" format. The cap element 20 again has a bore 22 defined by a side wall 24, a bottom wall 26 and a fillet 28 therebetween. The side wall 24 is provided with a rib 30 extending around the inner circumference of the bore 22. Again, the rim is provided at a constant depth relative to the mouth 32 of the bore 22 and has a constant height relative to the base 26 and the bore 22.

[0110] Again, the underside 34 of the cap element 20 includes a tip 36 and teeth 38 a , 38 b separated from the tip 36 by a recess 40 .

[0111] The bore 22 again has a circular cross section relative to the longitudinal axis XX of the cap element 20. The bore 22 is adapted to receive a portion of an impactor device (Figures 5a and 5b).

[0112] As seen in FIG. 5a, the distal end 50 of the impingement device 52 includes a reduced diameter stem portion 70 that is reduced in diameter compared to the remainder of the distal end 50 of the impingement device 52. As previously described, a cylindrical end portion 54 is provided to provide a mounting for the stem portion 70. The stem portion 70 includes a groove 58 in its outer surface 60 that extends the entire circumference of the stem portion 70. The groove is spaced from an end face 62 of the distal end 50 and from a transition surface 72 at the end of the cylindrical end portion 54.

[0113] The stem portion 70 is configured to be complementary to the bore 22 and the cap element 20. Thus, the stem portion 70 has a radius that is closer to the radius of the bore 22, a chamfered edge 56 that is closer to the tolerance than the profile of the fillet 28, and a height of the groove 58 relative to the end face 62 that is closer to the tolerance than the height of the rib 30 relative to the bottom wall 26 of the bore 22.

[0114] The stem portion 70 tapers slightly from its proximal end 76 to its distal end 52. This occurs upon introduction of the distal end 50 into the bore.

[0115] In use, the cap element 20 and the distal end 50 of the impingement device are brought close together and introduced into one another in the same manner as described above. The cap element 20 thus has a removed state and an inserted state in which the end face 62 abuts the bottom wall 26 to prevent further insertion and the locating surface 72 abuts the top wall 74 of the cap element 20. Again, the rib 30 is received within the complementary profile of the groove 58.

[0116] 6a and 6b, a further alternative embodiment of the cap element 20 is provided. In this case, an interference fit approach is used. The cap element 20 has a bore 22 defined by a side wall 24, a bottom wall 26 and a fillet 28 therebetween. A top wall 74 is also provided. In this embodiment, no rib or groove configuration is provided and the side wall 24 is continuous, although possibly tapered.

[0117] The tip 36, teeth 38a, 38b and recesses 40 are provided in the same manner as described above.

[0118] As shown in Figures 7a and 7b, at the distal end 50 of the impaction device 52, the stem portion 70 is also free of recesses or grooves in this configuration.

[0119] The stem portion 70 is configured to be complementary to the bore 22 in the cap element. Thus, the stem portion 70 has a radius that is closer to the radius of the bore 22, a chamfered edge 56 that is closer to the profile of the fillet 28, and a length of the stem portion 70 along the longitudinal axis XX that is closer to the depth of the bore 22.

[0120] In use, the cap element 20 and the distal end 50 of the impaction device are brought together and insertion continues until the end face 62 abuts the bottom bore 26 and the transition surface 72 abuts the top wall 74 preventing further insertion. The interference fit provided between the stem portion 70 and the bore 22 serves to retain the cap element 20 on the impaction device 5 during use.

[0121] Other embodiments of the engagement between the cap element 20 and the impact device 52 are possible. For example, In Figures 8a and 8b, as well as Figures 9a and 9b, a bayonet type engagement is employed. The cap element 20 has a bore 22, a bottom wall 26 and a side wall 24 as previously described, but the side wall 24 carries a plurality of inwardly projecting lugs 80. These may be inserted axially into openings 82 of a recess in the end portion 54, then into the bottom 84 of the recess and rotated into locking end 86 of the recess.

[0122] In Figures 10a and 10b, as well as Figures 11a and 11b, a thread-type engagement is provided. The cap element 20 has a bore 22, a bottom wall 26 and a side wall 24 as previously described, but the side wall 24 is provided with threads 90. After initial insertion, rotation of the cap element 20 causes engagement with the impaction device and its threads 92 and incremental thread engagement.

[0123] In Figures 12a and 12b, as well as Figures 13a and 13b, a complementary surface type engagement is provided. The cap element 20 comprises a solid body 100, at the proximal end of which a cross-shaped recess 102 is formed. The cross-shaped recess 102 is formed in this case by two intersecting channels 104 and 106 arranged at right angles to each other. The distal end of the impact device comprises a cross-shaped projection 108, which is of a complementary n-profile to the cross-shaped recess 102. The cross-shaped projection is formed by two intersecting protrusions 110 and 112.

[0124] Regarding suitable materials for the cap element 20, they need to be able to successfully withstand worst case scenarios for a single use. Any variation in the cap element 20 should be below a level that affects the effectiveness of the system. Plastics, metals, and ceramics all provide possible materials for the cap element 20.

[0125] The single use of the cap element 20 can be ensured by careful selection of the material of the cap element 20 for the conditions that would be encountered in any attempt to reuse the cap element 20. For example, the material may be selected such that it is destroyed, or at least rendered inoperable, by washing and / or autoclaving the cap element 20.

[0126] A wide range of materials are suitable for use in forming the cap element 20. The cap element 20 may be formed from the same material or material type as the surgical instrument to which it is attached, such as the impingement device 52. Suitable materials include stainless steel, tungsten carbide, titanium, selected ceramics, and selected plastics. Potential ceramics include aluminum oxide and calcium phosphate. Potential plastics include polyphenylsulfone (such as Radel® from Solvay), polyetherketone (PEEK), and polypropylene resin (such as Propylux® available from Westlake Plastics). Further potential plastic materials may include ultra-high molecular weight polyethylene (UHMW), polycarbonate, acrylonitrile butadiene styrene (ABS), and polydicyclopentadiene polymer (PDCPD).

[0127] The cap element 20 may be provided with a partial or complete coating to modify properties at locations on the cap element 20, for example a partial ceramic coating covering the impact bearing surface.

[0128] Because cap element 20 is intended for single use, a wider range of materials is potentially suitable than for surgical instruments that are used repeatedly. As a single use component, cap element 20 can be provided from less expensive materials than surgical instruments.

[0129] Although reuse and subsequent disposal is intended, ideally for recycling of the materials, it is desirable to actively prevent inadvertent reuse of cap element 20. There are various approaches to achieve or contribute to this.

[0130] A possible approach would include a visible change indicator when an attempt has occurred to prepare the cap element 20 for reuse. Attempts to prepare the cap element 20 for reuse include cleaning / washing, thermal disinfection [typically 73° C.-90° C.] and / or chemical disinfection, sterilization [typically saturated steam at 130° C.-137° C. for 3-3.5 minutes], etc. The visible change indicator would respond to exposure to one or more of those steps and the conditions they represent by undergoing a visible change in the appearance of the visual change indicator, thus flagging that a previous use has occurred or that the cap was at risk for reuse.

[0131] Possible approaches include physical changes in one or more characteristics of the cap element 20 as a result of preparation for reuse. Deformation of one or more portions of the cap element 20 is one possibility. For example, temperatures encountered may result in the retention elements of the cap element 20 (e.g., the ribs 30 or the inner profile of the bore 22 that provide an interference fit) changing in physical form or profile such that they no longer serve to attach the cap element 20 to the impaction device 52. The retention elements, such as the ribs 30, are not used to transmit the impact force through the cap element 20, but simply to hold the two together during manipulation to the use position. Thus, the retention elements may be formed from materials that readily undergo such physical deformation under such conditions, and a wide range of materials are suitable to provide such low retention to simply hold the cap element 20 on the impaction device 52. For example, polyethylene oxide [PEG] melts at about 66°C.

[0132] With reference to FIG. 14, a series of parts are marked, the following of which represents only an exemplary embodiment with respect to the dimensions of those parts.

[0133] Dimensions of part 1 - from bottom surface 34 to end of tip 36 = 7.870 ± 0.125 mm to 14.870 ± 0.125 mm; Dimensions of part 2 - diameter or major axis length of tip 36 = 4.615 ± 0.050 mm

[0134]

number

[0135]

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[0136]

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[0137]

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[0138] While the above-described embodiments have focused on cap element 20 in the context of impaction device 52, the concepts of cap element 20 are applicable in the context of other surgical instruments where impaction or other high and / or varying force levels must be applied. Further examples of such scenarios may include acetabular shell inserters, acetabular polyliner inserters, acetabular drill holders, and the like.

[0139] While the present disclosure has been illustrated and described in detail in the drawings and foregoing description, it is understood that such illustration and description is merely illustrative in nature and should not be regarded as restrictive, and that merely illustrative embodiments have been shown and described, and that all changes and modifications that come within the spirit of the disclosure are desired to be protected.

[0140] There are several advantages of the present disclosure that derive from the various features of the devices, systems, and methods described herein. It should be noted that alternative embodiments of the devices, systems, and methods of the present disclosure may not include all of the features described, but still benefit from at least some of the advantages of such features. Those skilled in the art may readily devise their own implementations of the devices, systems, and methods that incorporate one or more of the features of the present invention and are within the spirit and scope of the present disclosure.

[0141] [Embodiment] (1) A surgical component attachment system, comprising: a surgical instrument having a proximal end and a distal end, the distal end of the surgical instrument providing a first portion of an attachment; and an intermediate component having a proximal end, the proximal end of the intermediate component providing a second portion of the attachment, and having a distal end, the distal end of the intermediate component comprising a first portion of a second attachment, wherein the first portion of the attachment and the second portion of the attachment are removable. (2) The surgical component attachment system of embodiment 1, wherein the intermediate component is a single-use component during surgery, and the intermediate component has one or more features that prevent the intermediate component from being a multiple-use component during surgery. (3) The one or more characteristics are variable under one or more conditions, the one or more conditions being: i. one or more conditions that the intermediate component will experience when prepared for reuse; ii. the washing temperature of said intermediate component; iii. exposing said intermediate component to one or more chemicals; iv. exposing said intermediate component to disinfection temperatures; v. exposing the intermediate component to a sterilization temperature. (4) A surgical component attachment system as described in embodiment 2 or embodiment 3, wherein the one or more features are one or more visual indications. (5) The surgical component attachment system of any of embodiments 2 to 4, wherein the one or more features are modifiable portions of the intermediate component, and the one or more features are portions of the intermediate component that change profile and / or shape and / or become nonexistent and / or nonfunctional.

[0142] (6) A surgical component attachment system according to any one of claims 1 to 5, wherein the removable attachment is adapted to restrain axial movement of one or both of the surgical component and the intermediate component relative to each other in an axial direction when in an engaged state. (7) A surgical component attachment system according to any one of claims 1 to 6, wherein the intermediate component is a cap element. (8) A surgical component attachment system according to any one of claims 1 to 7, wherein the intermediate component provides a body portion and a recess within the body portion, the recess comprising one or more retaining elements. (9) The surgical component mounting system of claim 8, wherein the recess includes one or more protrusions extending inwardly therefrom. (10) A surgical component attachment system according to any one of claims 1 to 9, wherein the distal end of the intermediate element provides a first portion of the second attachment including one or more protrusions extending distally therefrom.

[0143] (11) The surgical component attachment system of claim 10, wherein the first portion of the second attachment tool includes a primary protrusion and one or more secondary protrusions, the primary protrusion being disposed between the two or more secondary protrusions. (12) The surgical component attachment system of any one of claims 1 to 11, wherein the surgical instrument is an orthopedic surgical instrument and / or the surgical instrument is an impactor instrument used to apply an axial or substantially axial force. (13) A surgical component attachment system according to any one of claims 1 to 12, wherein the intermediate component is connectable to an implant and / or a femoral implant and / or an acetabular cup and / or an acetabular shell. (14) A method of attaching a surgical instrument using a surgical component attachment system, the method comprising: providing a surgical instrument having a proximal end and a distal end, the distal end of the surgical instrument providing a first portion of an attachment; providing an intermediate component, the intermediate component having a proximal end, the proximal end of the intermediate component providing a second portion of the fitting, the intermediate component having a distal end, the distal end of the intermediate component comprising a first portion of a second fitting; connecting the first portion of the fitting and the second portion of the fitting, the connection being removable; and A method comprising: (15) The method further comprises: a) a detached state for the surgical instrument and the intermediate component, wherein the surgical instrument and the intermediate component are separated from one another; b) a contact state between the surgical instrument and the intermediate component, wherein a portion of one of the surgical instrument and the intermediate component is inserted into the other of the intermediate component and the surgical instrument; c) an engaged state that includes inserting one of the surgical instrument and the intermediate component into the other until further insertion is not possible.

[0144] (16) In the engaged state, a) the engagement is provided between one or more retaining elements on the surgical instrument and / or one or more retaining elements on the intermediate component; and / or b) the engagement is provided by an interference fit between the surgical instrument and the intermediate component; and / or c) The method of embodiment 15, wherein axial movement of the surgical component and the intermediate component relative to one another is constrained in one or both axial directions. (17) The method further comprises: a) a second detached state for the combination of the surgical instrument and the intermediate component, the combination being separated from further surgical instruments and / or implants; and / or 17. The method according to any of embodiments 14 to 16, further comprising: b) providing a second contact state of the combination of the surgical instrument and the intermediate component with a further surgical instrument and / or an implant.

Claims

1. 1. A surgical component attachment system, comprising: a surgical instrument having a proximal end and a distal end, the distal end of the surgical instrument providing a first portion of an attachment; and an intermediate component, the intermediate component having a proximal end, the proximal end of the intermediate component providing a second portion of the attachment, and the intermediate component having a distal end, the distal end of the intermediate component comprising a first portion of a second attachment, wherein the first portion of the attachment and the second portion of the attachment are removable.

2. The surgical component attachment system of claim 1 , wherein the intermediate component is a single-use per surgery component, the intermediate component comprising one or more features that prevent the intermediate component from being a multiple-use per surgery component.

3. The one or more characteristics are variable under one or more conditions, the one or more conditions being: i. one or more conditions that the intermediate component will experience when prepared for reuse; ii. The washing temperature of the intermediate component; iii. exposing the intermediate component to one or more chemicals; iv. exposing the intermediate component to disinfection temperatures; v. exposing the intermediate component to a sterilization temperature.

4. The surgical component attachment system of claim 2 or claim 3, wherein the one or more features are one or more visual indicia.

5. 3. The surgical component attachment system of claim 2, wherein the one or more features are alterable portions of the intermediate component, the one or more features being portions of the intermediate component that change profile and / or shape and / or become absent and / or non-functional.

6. The surgical component attachment system of claim 1 , wherein the removable attachment is adapted to, in an engaged state, restrain axial movement of one or both of the surgical component and the intermediate component relative to one another in an axial direction.

7. The surgical component attachment system of claim 1 , wherein the intermediate component is a cap element.

8. The surgical component attachment system of claim 1 , wherein the intermediate component provides a body portion and a recess in the body portion, the recess including one or more retention elements.

9. The surgical component mounting system of claim 8 , wherein the recess includes one or more inwardly extending protrusions.

10. The surgical component attachment system of claim 1 , wherein the distal end of the intermediate element provides a first portion of the second attachment including one or more distally extending protrusions.

11. 11. The surgical component attachment system of claim 10, wherein the first portion of the second attachment includes a primary projection and one or more secondary projections, the primary projection being disposed between the two or more secondary projections.

12. 10. The surgical component attachment system of claim 1, wherein the surgical instrument is an orthopedic surgical instrument and / or the surgical instrument is an impactor instrument used to apply an axial or substantially axial force.

13. The surgical component attachment system of claim 1 , wherein the intermediate component is connectable to an implant and / or a femoral implant and / or an acetabular cup and / or an acetabular shell.

14. 1. A method of attaching a surgical instrument using a surgical component attachment system, the method comprising: providing a surgical instrument having a proximal end and a distal end, the distal end of the surgical instrument providing a first portion of an attachment; providing an intermediate component, the intermediate component having a proximal end, the proximal end of the intermediate component providing a second portion of the fitting, the intermediate component having a distal end, the distal end of the intermediate component comprising a first portion of a second fitting; connecting the first portion of the fitting and the second portion of the fitting, the connection being removable; and A method comprising:

15. The method comprises: a) a detached state for the surgical instrument and the intermediate component, wherein the surgical instrument and the intermediate component are separated from one another; b) a contact state between the surgical instrument and the intermediate component, wherein a portion of one of the surgical instrument and the intermediate component is inserted into the other of the intermediate component and the surgical instrument; and c) an engaged state comprising inserting said one of said surgical instrument and said intermediate component into said other until further insertion is not possible.

16. In the engaged state, a) the engagement is provided between one or more retaining elements on the surgical instrument and / or one or more retaining elements on the intermediate component; and / or b) the engagement is provided by an interference fit between the surgical instrument and the intermediate component; and / or 16. The method of claim 15, wherein c) axial movement of the surgical component and the intermediate component relative to one another is constrained in one or both axial directions.

17. The method comprises: a) a second detached state for the combination of the surgical instrument and the intermediate component, the combination being separated from further surgical instruments and / or implants; and / or 17. The method according to any one of claims 14 to 16, further comprising: b) providing a second contact state of the combination of the surgical instrument and the intermediate component with a further surgical instrument and / or an implant.

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