Test necks and methods

Abstract

The present invention relates to a trial neck (10) for hip surgery and a method of attaching the trial neck to a femoral canal instrument (60). The trial neck includes a body portion (4) including a bore (8) for receiving a proximal end (64) of the femoral canal instrument. The trial neck further includes an elongate neck (2) extending from the body portion. The trial neck further includes a locking mechanism having a lever (20). The lever has a first end (24). The lever further has a second end (22). The lever further has an engagement surface (26). The second end of the lever is actuatable to push the engagement surface against the proximal end of the femoral canal instrument to secure the proximal end of the femoral canal instrument within the bore.

Description

[0001] Cross-references to relevant PCT applications

[0002] This application is a continuation-in-part of U.S. Patent Application No. 17 / 248,665, filed on February 2, 2021, the entire contents of which are incorporated herein by reference. Background Technology

[0003] This specification relates to a test neck and a method for attaching the test neck to a femoral tube device.

[0004] Hip replacement is a surgical procedure in which the hip joint is replaced by a prosthetic implant. A total hip replacement involves placing an acetabular cup implant in the patient's acetabulum and a prosthesis in the patient's femur. The prosthesis typically includes a rod that is received in the medullary canal of the femur, and a head having a bearing surface received in the acetabulum or acetabular cup implant. The prosthesis also typically includes a neck that extends between the proximal end of the rod and the head.

[0005] Successful hip replacement surgery requires proper positioning and alignment of the acetabular cup implant and the prosthesis itself. Misalignment and / or selection of an improperly sized acetabular cup implant and / or prosthesis can lead to restricted prosthesis movement and / or accelerated wear and tear on the bearing surfaces of the acetabular cup implant and its head. Achieving this proper positioning and alignment involves various factors. At least some of these factors relate to the neck of the prosthesis. These factors may include, for example, the length (offset) of the neck and the angular orientation of the neck relative to the rod.

[0006] Hip replacement surgery typically involves testing various components of the acetabular cup implant and prosthesis. As part of this, the medullary canal of the femur can be prepared using drills / reamers of various sizes. Once the drill / reamer is inserted into the femur, a test neck and test head can also be attached to the drill / reamer to assess whether a prosthesis with this type of neck and head (e.g., in terms of neck size and offset) would be suitable for the patient.

[0007] Once the surgeon is certain that the selected combination of drill / reamer, test neck, and test head has been correctly positioned and aligned, they can be removed and replaced with the implant itself. Summary of the Invention

[0008] Aspects of this disclosure are shown in the appended independent and dependent claims. Combinations of features from the dependent claims may be appropriately combined with features of the independent claims, and not only as expressly shown in the claims.

[0009] According to one aspect of this disclosure, a test neck for hip surgery is provided, the test neck comprising:

[0010] The main body includes a hole for receiving the proximal end of a tubular device;

[0011] A slender neck that extends from the main body;

[0012] The locking mechanism includes a lever, which has:

[0013] First end;

[0014] The second end; and

[0015] mating surfaces,

[0016] The second end of the lever is actuable to push the engagement surface against the proximal end of the tubular device, thereby securing the proximal end of the tubular device within the hole.

[0017] The lever of the locking mechanism of the test neck provides a reliable way to attach the test neck to the tubular device. The lever allows sufficient holding force to be applied to the tubular device within the bore, while also allowing for fine adjustments.

[0018] The locking mechanism may also include an actuating member for engaging with the second end of the lever to actuate the lever. This provides a convenient way to operate the lever.

[0019] The test neck may include another hole. The actuating member may extend within another hole. Another hole may extend within an elongated neck.

[0020] Another hole may extend roughly parallel to the longitudinal axis of the slender neck.

[0021] The proximal end of the elongated neck may have an opening leading to another hole. The proximal end of the actuating member may include connection features for attaching a tool to the actuating member for actuating the actuating member.

[0022] The proximal end of the slender neck can be configured to be attached to the test head.

[0023] The other hole may have a threaded surface. The actuating member may have a threaded surface for engaging with the threaded surface of the other hole, allowing the actuating member to rotate, thereby moving the actuating member along the other hole to engage with the second end of the lever. The threaded engagement of the actuating member allows for fine adjustment of the lever's position.

[0024] The test neck may have a window for observing the actuating component inside another aperture. This is also useful for cleaning the test neck between surgical procedures.

[0025] The first end of the lever can be located on the lateral side of the test neck.

[0026] The engagement surface of the lever can be curved to match the curved outer surface of the proximal end of the tubular device.

[0027] The inner surface of the hole may have a profiled surface for engaging with the corresponding profiled outer surface of the proximal end of the tubular device to prevent the tubular device from rotating about the longitudinal axis of the tubular device relative to the test neck.

[0028] The first end of the lever can be integral with the main body. The mating surface can be located between the first end and the second end of the lever.

[0029] The second end of the lever can be located inside the slender neck.

[0030] The lever may include at least one dog-leg-shaped bend. This allows for optimization of the lever arm provided by the lever.

[0031] For example, a femoral canal device can be an implant such as a rod-shaped implant. For example, a femoral canal device can be a femoral canal preparation instrument such as a reamer, test rod, or drill.

[0032] The first end of the lever can be pivotally mounted within the test neck.

[0033] The actuating member may have a distal end for engaging with a second end of the lever to actuate the lever. The distal end may include a recess for engaging with a corresponding protrusion on the second end of the lever to move the engagement surface away from the proximal end of the tubular device when the actuating member is withdrawn along another hole.

[0034] The second end of the lever may include an actuation member receiving opening.

[0035] The first end of the lever may include a grippable feature for manually actuating the lever to move the engagement surface away from the proximal end of the tubular device.

[0036] The second end of the lever may include an angled surface facing the hole to allow the proximal end of the tubular device to ride on the angled surface to pivot the lever, thereby moving the engagement surface away from the proximal end of the tubular device when the proximal end of the tubular device is inserted into the hole.

[0037] The lever also includes a biasing element for biasing a first end of the lever toward the hole, thereby biasing the engagement surface away from the hole.

[0038] According to another aspect of this disclosure, a surgical kit is provided, the surgical kit comprising:

[0039] The above-mentioned types of test necks; and

[0040] Femoral tube appliance.

[0041] The proximal end of the femoral tube device may include a circumferential lip or groove for engaging with a mating surface of a locking mechanism of the test neck. When the locking mechanism is locked, the mating surface may engage with the lip or groove to prevent the proximal end of the femoral tube device from being removed from the bore.

[0042] For example, a femoral canal device can be an implant such as a rod-shaped implant. For example, a femoral canal device can be a femoral canal preparation instrument such as a reamer, test rod, or drill.

[0043] According to another aspect of this disclosure, a method is provided for attaching a test neck to a femoral canal device, the test neck comprising:

[0044] The main body includes a hole for receiving the proximal end of a tubular device;

[0045] A slender neck that extends from the main body;

[0046] The locking mechanism includes a lever, which has:

[0047] First end;

[0048] The second end; and

[0049] mating surfaces,

[0050] The second end of the lever is actuable to push the engagement surface against the proximal end of the tubular device, thereby securing the proximal end of the tubular device within the hole.

[0051] The method includes:

[0052] Insert the proximal end of the femoral tube device into the hole; and

[0053] The second end of the actuating lever is used to push the engagement surface against the proximal end of the tubular device.

[0054] The lever of the locking mechanism of the test neck provides a reliable way to attach the test neck to the tubular device. The lever allows sufficient holding force to be applied to the tubular device within the bore, while also allowing for fine adjustments.

[0055] The method may include engaging the actuating member of the locking mechanism with the second end of the lever to actuate the lever. This provides a convenient way to operate the lever.

[0056] The proximal end of the actuating member may include a connecting feature. The method may also include connecting a tool to the actuating member and then to the connecting feature for actuating the actuating member.

[0057] The method may also include observing the actuating component through a window in the slender neck of the test neck.

[0058] The engagement surface of the lever can be curved to match the curved outer surface of the proximal end of the tubular device.

[0059] The first end of the lever can be integral with the main body. The mating surface can be located between the first end and the second end of the lever.

[0060] The first end of the lever can be pivotally mounted within the test neck.

[0061] For example, a femoral canal device can be an implant such as a rod-shaped implant. For example, a femoral canal device can be a femoral canal preparation instrument such as a reamer, test rod, or drill. Attached Figure Description

[0062] Embodiments of this disclosure will be described below by way of example only with reference to the accompanying drawings, wherein similar reference numerals are associated with similar elements, and in the drawings:

[0063] Figure 1 A test neck attached to a tubular device such as a reamer, according to one embodiment of the present disclosure, is shown;

[0064] Figure 2 It shows Figure 1 Another view of the test neck;

[0065] Figure 3 It shows Figure 1 A front view of the test neck;

[0066] Figure 4A It shows Figure 1 A top view of the test neck;

[0067] Figure 4B It shows Figure 1 A top view of the test neck;

[0068] Figure 4C It shows Figure 1 The inner view of the neck during the test;

[0069] Figure 5 It shows Figure 1 The cross-section of the neck of the test;

[0070] Figure 6 It shows Figure 1 The test neck crossing Figure 5 Another cross section of the plane VV shown;

[0071] Figure 7 yes Figure 1 The cross-section of the test neck shows the profile surface of the hole in the test neck for engagement with the corresponding profile surface of the tubular device.

[0072] Figure 8 A cross-section of the test neck according to another embodiment of this disclosure is shown;

[0073] Figure 9 Showing more details Figure 8 Some of the components in the test neck;

[0074] Figure 10 The diagram shows the state of the unlocked structure. Figure 8 The cross-section of the neck of the test;

[0075] Figure 11 It shows the locked construction Figure 8 The cross-section of the neck of the test;

[0076] Figure 12 A cross-section of the test neck according to yet another embodiment of this disclosure is shown;

[0077] Figure 13 A cross-section of the test neck according to another embodiment of this disclosure is shown;

[0078] Figure 14 A cross-section of the test neck according to yet another embodiment of this disclosure is shown;

[0079] Figure 15 A cross-section of the test neck according to another embodiment of this disclosure is shown; and

[0080] Figure 16 A cross-section of the test neck according to yet another embodiment of this disclosure is shown. Detailed Implementation

[0081] The embodiments of this disclosure are described below with reference to the accompanying drawings.

[0082] Figures 1 to 7 Various views of the test neck 10 and femoral canal device according to one embodiment of the present disclosure are shown. The following orientations are shown in the figures:

[0083] • Inner direction 82;

[0084] • Outer direction 84;

[0085] • Upward direction 86; and

[0086] Downward direction 88

[0087] For example, a femoral canal device can be a femoral canal preparation instrument such as a reamer, test rod, or drill. Alternatively, a femoral canal device can be an implant such as a rod-shaped implant.

[0088] exist Figures 1 to 7In the following description, the tubing device is a tubing preparation apparatus that includes the reamer 60. However, it should be understood that in other embodiments, the tubing device may be another device such as one of the devices described above, and may have a proximal end constructed similarly to the proximal end 64 of the reamer 60.

[0089] The test neck 10 includes a body portion 4. The body portion 4 includes a hole 8. The hole 8 may be a blind hole (closed at its proximal end), although in the embodiment shown in the figure, the hole is an open hole completely through the body portion 4. The hole 8 may receive the proximal end of a reamer 60 for attaching the reamer 60 to the test neck 10. Figure 5 As shown, in some embodiments, the aperture may include an inner lip or shoulder 63, which includes a narrowed portion of the aperture 8. The lip or shoulder 63 may engage with a corresponding lip or shoulder of a wider portion of a proximal end 64 of a tubular device to serve as a complete stop preventing the proximal end 64 from passing completely through the aperture 8.

[0090] The reamer 60 itself can be in the form of an elongated shaft (see, for example, see...). Figure 1 The reamer 60 may also have a distal cutting surface 68. It may also have a proximal intermediate portion 66 relative to the cutting surface 68. The reamer 60 has a proximal end 64. The proximal end 64 may be proximal to the cutting surface 68 and / or the intermediate portion 66. The proximal end 64 may be generally cylindrical with a circular cross-section, although this is not required. The proximal end 64 may be inserted into the hole 8 of the test neck 10 for attaching the reamer 60 to the test neck, as will be described in more detail below.

[0091] like Figure 5 As can be seen, the proximal end 64 of the reamer 60 may include several features. For example, the proximal end 64 may have a connection feature 62, such as a profile hole, for attaching the reamer 60 to a reamer driver. The hole of the connection feature 62 may include an internal thread 65 to facilitate the attachment of an auxiliary instrument such as a reamer driver. In an embodiment where the hole 8 extends completely through the body portion 8, the reamer driver can be attached to the reamer 60 using the connection feature 62 even when the test neck 10 is attached to the reamer 60.

[0092] The proximal end 64 of the reamer 60 may also include a circumferential lip or groove 70 for engaging with the engagement surface of the locking mechanism of the test neck 10, which will be described in detail below. Figure 5 As can be seen, the lip or groove 70 may be formed by the edge of the circumferential portion of the proximal end 64 of the reamer 60, which has a stepped increase (or decrease) in the radius of the proximal end 64.

[0093] In some embodiments, the reamer 60 may include an angled surface that mates with the engagement surface of the locking mechanism at an angle to the engagement surface of the reamer 60. The angled surface may include a circumferential (e.g., annular) recess extending around the reamer 60 (in a manner substantially similar to that of the lip or groove 70). This maximizes the contact surface area between the reamer 60 and the engagement surface and avoids potential damage to the surface of the reamer 60 (caused by the engagement surface “digging” into the reamer 60). In some embodiments, the engagement surface and the angled surface may cooperate to push the inner lip or shoulder 63 against the corresponding lip or shoulder of the proximal end 64, thereby locking the proximal end 64 to prevent it from moving within the hole 8 in either axial direction.

[0094] The test neck 10 also has an elongated neck 2. The elongated neck 2 extends from the body portion 4. The elongated neck 2 extends at a non-zero angle relative to the longitudinal axis of the hole 8. The proximal end 16 of the elongated neck 2 may be configured (i.e., including connection features) to be attached to the test head.

[0095] The test neck 10 may include one or more external markings 14 indicating information about the type or size of the test neck 10. Figures 1 to 7 In the illustrated embodiment, one such mark 14 is located on the proximal (upper) surface of the test neck 10, although other locations for such marks are also possible.

[0096] As previously described, the proximal end 64 of the reamer 60 may be received within the bore 8 for attaching the reamer 60 to the test neck 10. According to an embodiment of this disclosure, the test neck 10 includes a locking mechanism. The locking mechanism can be used to lock the proximal end 64 of the reamer 60 within the bore 8 to prevent movement of the reamer 60 relative to the test neck 10 and / or accidental disengagement of the test neck 10 from the reamer 60.

[0097] The locking mechanism includes a lever 20. The lever 20 has a first end 24, a second end 22, and an engagement surface 26. The first end 24 is laterally positioned relative to the engagement surface 26 and the second end 22. The engagement surface 26 is laterally positioned relative to the second end 22.

[0098] In this embodiment, the first end portion 24 is integrally formed with the main body portion 4. (As can be seen from...) Figure 2 , Figure 3 , Figure 6 and Figure 7 Based on observation and understanding, the first end 24 of the lever 20 may include a pair of arms, each extending around the hole 8 to engage with the body portion 4 at a point generally laterally positioned on the test neck 10. The point at which the first end 24 (the pair of arms) engages with one or more of the body portion 4 may form a hinge for a movable spring.

[0099] In this embodiment, the second end 22 is located within the elongated neck 2 of the test neck 10, although it could also be located within the body portion 4. Positioning the second end 22 within the elongated neck 2, compared to its location within the body portion 4, allows the second end 22 to be sufficiently far away from the engagement surface 26, thereby improving the mechanical advantages provided by the lever 20.

[0100] In this embodiment, the mating surface 26 is located between the first end 24 and the second end 22. The mating surface 26 in this embodiment is positioned adjacent to the sidewall of the hole 8, thereby allowing the mating surface 26 to contact and push against the proximal end 64 of the reamer 60, thereby securing the proximal end 64 of the reamer 60 within the hole 8 when the rod 20 is actuated.

[0101] In this embodiment, the aforementioned pair of arms of the lever 20 extending around the hole 8 extend generally outward in a direction 84 from the portion of the lever 20 including the engagement surface 26, so as to engage with the body portion 4 at the first end 24. The portion of the lever 20 between the engagement surface 26 and the second end 22 may include a single solid piece that branches at the engagement surface 26 to form the pair of arms. Thus, when viewed along the longitudinal axis of the hole 8, the lever may be generally forked or Y-shaped.

[0102] As shown in the figure, the portion of lever 20 between the engagement surface 26 and the second end 22 may include multiple dog-leg-shaped bends. This allows for mechanical advantages from actuation of the second end 22 of lever 20 as described below, while also allowing lever 20 to navigate the aforementioned non-zero angle between the elongated neck 2 and the longitudinal axis of the hole 8.

[0103] As can also be seen in the figure, lever 20 can reside in a slot formed in the sidewall of test neck 10. The slot can be sized to have sufficient clearance to ensure that lever 20 can be actuated during operation of the locking mechanism and that the sides of the slot are not contaminated. The slot can also be sized to provide proper support for lever 20 during washing of test neck 10.

[0104] In some embodiments, the locking mechanism further includes an actuating member 30. The actuating member 30 may be used to actuate the second end of the lever 20.

[0105] In this embodiment, the test neck 10 has another hole 15 in which the actuating member 30 extends. The other hole 15 may extend generally parallel to the (longitudinal) neck axis of the elongated neck 2. The other hole 15 may terminate at a proximal end 16 of the elongated neck 2. In this embodiment, the opening of the other hole 15 located at the proximal end 16 of the elongated neck 2 allows access to the actuating member 30. The proximal end of the actuating member 30 may include a connection feature 52 for attaching a corresponding connection feature 52 of the tool 50 to the actuating member 30 for actuating the actuating member 30. In some embodiments, a test head that may be attached to the proximal end 16 of the elongated neck 2 may include an opening or orifice through the test head to provide passage to the connection feature 32 for operating the actuating member 30. For example, the tool 50 may be inserted through the opening or orifice in the test head to engage the connection feature 52 to the connection feature 32. In some embodiments, the tool 50 may be integrated into the test head itself.

[0106] To operate the actuating member 30, it can be moved along another hole 15 (along... Figure 5 The direction indicated by the middle arrow "A" (generally parallel to the longitudinal axis of the elongated neck 2 in this embodiment) moves toward the second end 22 of the lever 20. The tip 34 can thus contact the second end 22 of the lever 20, thereby deflecting the lever 20. This causes the lever 20 to rotate about the first end 24 of the lever 20 (along...). Figure 5 (In the direction indicated by the middle arrow "B"). This causes the mating surface 26 to push against the proximal end 64 of the reamer 60 to lock the proximal end 64 into the hole 8.

[0107] Another hole 15 may have a threaded surface 18 for engaging with a corresponding threaded surface 38 of the actuating member 30. Rotation of the actuating member 30 within the other hole 15 (e.g., using tool 50) causes the actuating member to move back and forth within the other hole 15 in the direction “A” as described above, thereby operating the lever 20.

[0108] In some embodiments, the test neck may include one or more windows. For example, the test neck 10 in the embodiment shown in the figure has a window 12 located in the elongated neck 2. The window 12 may be formed on both the front and rear surfaces of the elongated neck 10. The window 12 allows the actuating member 30 to be seen within another hole 15. This allows the position of the actuating member 30 within the other hole 15 to be determined by inspection. The window 12 may also allow improved access to the interior of the test neck 10 (specifically, the other hole 15) for cleaning operations. It should be noted that the aforementioned slot in which the positioning lever 20 is located may similarly allow access to the interior of the test neck 10 for improved cleaning operations.

[0109] In some implementations, the engagement surface 26 of the lever 20 may be curved (in... Figure 6 and Figure 7 An example of this embodiment can be seen in [the diagram]. This allows the mating surface to substantially match the curved outer surface of the proximal end 64 of the reamer 60. By matching the curved outer surface of the proximal end 64 of the reamer 60, the size of the mating area between the mating surface 26 and the proximal end 64 can be increased to achieve a more robust connection between the test neck 10 and the reamer 60. It should be noted that in some embodiments, a portion of the mating surface 26 located on the aforementioned pair of arms of the lever 20 may form at least a portion of the curved mating surface 26.

[0110] The aforementioned locking mechanism typically resists movement of the reamer 60 along the longitudinal axis of the hole 8, thereby preventing accidental movement of the test neck 10 relative to the reamer 60 and / or preventing accidental removal of the proximal end of the reamer 60 from the hole 8. In some embodiments, the test neck 10 and / or the reamer 60 may include features for resisting rotation of the reamer 60 within the hole 8 (i.e., about the longitudinal axis of the hole 8). It should be noted that even without such additional features, the frictional force associated with pressing the mating surface 26 against the proximal end of the reamer 60 can also resist rotation of the reamer 60 within the hole 8 to some extent.

[0111] exist Figures 1 to 7 The implementation plan shown (see details) Figure 4A , Figure 4B and Figure 7 The inner surface of hole 8 has a corresponding outer surface 67 for a profile corresponding to the proximal end 64 of reamer 60 (see...). Figure 3 and Figure 6 The engagement of these contour surfaces 67 / 87 resists rotation of the reamer 60 relative to the test neck 10 about the longitudinal axis of the hole 8 / reamer 60, as described above. The contour surfaces 67 on the reamer 60 can extend circumferentially around the proximal end 64 of the reamer 60 (e.g., Figure 6 (as can be seen in the image), so that a portion of the profile surface 67 can be presented to the profile surface 87 of the test neck 10, regardless of the orientation of the proximal end 64 of the reamer 60 when it is first inserted into the hole 8.

[0112] like Figure 7 As can be seen, the contour surface 87 does not need to extend around the circumference of the hole 8, but can exist only on a segment of the hole 8 (in Figure 7 In this section, including the contour surface 87, is the innermost part of the inner surface of the hole 8 (where the section is located). Also, Figure 7 As can be seen, the contoured surface 87 can extend completely along the length of the inner surface of the hole 15. Figures 1 to 7In the illustrated embodiment, the contour surface 87 extends from the proximal end of the hole 8 to the distal end of the hole 8, and a portion of the contour surface 87 lies on the mating surface 26. However, it is also conceivable that the contour surface 87 may lie solely on the mating surface 26.

[0113] As described above, the proximal end 64 of the reamer 60 may include a circumferential lip or groove 70 for engaging with the engagement surface of the locking mechanism of the test neck 10. Figure 5 As can be seen, the lip or groove 70 may be formed by the edge of the circumferential portion of the proximal end 64 of the reamer 60, the edge having a stepped increase (or decrease) in radius of the proximal end 64. In some embodiments, a contour surface 67 may be located on the lip and / or in the groove 70 for engaging with a portion of the contour surface 87 on the engagement surface 26 of the lever 20. It should be noted that in some embodiments, when the locking mechanism is locked, the engagement surface may engage with the lip or groove 70 (e.g., a portion of the lever 20 including the engagement surface 26 may be inserted into the groove 70) to prevent removal of the proximal end 64 of the reamer 60 from the hole 8. Thus, in addition to the frictional force exerted by the engagement surface 26, the engagement surface 26 can physically prevent removal of the proximal end 64 of the reamer 60 from the hole 8.

[0114] Profile surfaces 67 / 87 may include splines of corresponding shapes that extend generally parallel to the longitudinal axes of the reamer 60 and the hole 8. Other types of profile surfaces may be used. Note that a portion of profile surface 87 on engagement surface 26 may form one or more teeth that engage with profile surface 67 on the proximal end 64 of the reamer 60 (e.g., see...). Figure 6 ).

[0115] Figure 8 A cross-section of the test neck according to another embodiment of this disclosure is shown. Figure 9 Showing more details Figure 8 Some of the components in the neck part of the test. Figure 10 The diagram shows the state of the unlocked structure. Figure 8 The cross-section of the neck of the test, and Figure 11 It shows the locked construction Figure 8 The cross-section of the neck of the test.

[0116] For example, Figure 8 , Figure 10 and Figure 11 The tubing equipment shown can be tubing preparation tools including a reamer, test rod, or drill bit. For example, Figure 8 , Figure 10 and Figure 11 The femoral canal device shown may alternatively be an implant such as a rod-shaped implant.

[0117] exist Figures 8 to 11 In the following description, tubular instruments include reamers, such as... Figure 1 The reamer 60 is shown. However, it should be understood that in other embodiments, the tubular device may be one of the other devices described above, and may have a proximal end constructed similarly to the proximal end 64 of the reamer.

[0118] The test neck 10 includes a main body portion 4. The main body portion 4 includes a hole 8. The hole 8 may be a blind hole (closed at its proximal end), although... Figure 8 , Figure 10 and Figure 11 In the illustrated embodiment, the hole is an open hole that completely passes through the body portion 4. The hole 8 may receive the proximal end 64 of a reamer for attaching the reamer to the test neck 10. As described above, the hole 8 may include an inner lip or shoulder that includes a narrowed portion of the hole 8. The lip or shoulder may engage with a corresponding lip or shoulder of a wider portion of the proximal end 64 of a tubular device to serve as a complete stop preventing the proximal end 64 from completely passing through the hole 8.

[0119] The reamer itself can be in the form of an elongated shaft (e.g., see [link]). Figure 1 The device 60 may have a distal cutting surface 68. The device 60 may also have a proximal intermediate portion 66 relative to the cutting surface 68. The device 60 has a proximal end 64. The proximal end 64 may be proximal to the cutting surface 68 and / or the intermediate portion 66. The proximal end 64 may be generally cylindrical with a circular cross-section, although this is not required. The proximal end 64 may be inserted into a hole 8 in the test neck 10 for attaching the device 60 to the test neck, as will be described in more detail below.

[0120] like Figure 8 , Figure 10 and Figure 11 As can be seen, the proximal end 64 of the reamer may include several features. For example, the proximal end 64 may have a connection feature 62, such as a profile hole, for attaching the reamer to a reamer driver. The hole of the connection feature 62 may include internal threads to facilitate attachment of the reamer driver. In an embodiment where the hole 8 extends completely through the body portion 4, the reamer driver can be attached to the reamer using the connection feature 62 even when the test neck 10 is attached to the reamer.

[0121] The proximal end 64 of the reamer may also include a circumferential lip or groove for engaging with the engagement surface of the locking mechanism of the test neck 10, as described above. Figures 1 to 7 As stated above.

[0122] As described above, the reamer may include angled surfaces that align with the engagement surface of the locking mechanism at an angle to the engagement surface of the reamer. The angled surfaces may include circumferential (e.g., annular) recesses extending around the reamer (in a manner substantially similar to a lip or groove 70). This maximizes the contact surface area between the reamer and the engagement surface and avoids potential damage to the surface of the reamer (caused by the engagement surface "digging" into the reamer).

[0123] The test neck 10 also has an elongated neck 2. The elongated neck 2 extends from the body portion 4. The elongated neck 2 extends at a non-zero angle relative to the longitudinal axis of the hole 8. The proximal end 16 of the elongated neck 2 may be configured (i.e., including connection features) to be attached to the test head.

[0124] Such as about Figures 1 to 7 The test neck 10 may include one or more external markings for indicating information about the type or size of the test neck 10.

[0125] As previously described, the proximal end 64 of the reamer can be received within the bore 8 for attaching the reamer to the test neck 10. According to an embodiment of this disclosure, the test neck 10 includes a locking mechanism. The locking mechanism can be used to lock the proximal end 64 of the reamer within the bore 8 to prevent movement of the reamer relative to the test neck 10 and / or accidental disengagement of the test neck 10 from the reamer.

[0126] The locking mechanism includes a lever 20. The lever 20 has a first end 24, a second end 22, and an engagement surface 26. The first end 24 is upwardly positioned relative to the engagement surface 26 and the second end 22. The engagement surface 26 is located on the side of the lever 20.

[0127] Lever 20 can be pivotally mounted (e.g., at the first end 24 of lever 20) within the test neck 10, for example, within the body portion 4. Figures 8 to 16 In the illustrated embodiment, lever 20 is pivotally mounted within cavity 90, located in the portion of body portion 4 adjacent to the elongated neck 2 and near bore 8. At least a portion of cavity 90 is open to bore 8 to allow engagement surface 26 to engage with proximal end 64 of the tubular device 60 when the tubular device 60 is received within bore 8. As previously described, this allows engagement surface 26 to contact and abut against proximal end 64 of the tubular device 60 to secure proximal end 64 of the tubular device 60 within bore 8 when lever 20 is actuated.

[0128] The pivot mount 92 may include, for example, a screw or bolt that passes through the test neck 10 in a front-to-back direction. The pivot mount 92 may pass through a hole in the lever 20 to allow the lever to pivot substantially in the coronal plane.

[0129] In some embodiments, the locking mechanism further includes an actuating member 30. The actuating member 30 may be used to actuate the second end 22 of the actuating lever 20, which will be described in more detail below. The actuating member 30 may be similar to the above description regarding... Figures 1 to 7 The actuating member 30 is described in the embodiment. Therefore, the test neck 10 may have another hole 15 within which the actuating member 30 extends. The other hole 15 may extend generally parallel to the (longitudinal) neck axis of the elongated neck 2. The other hole 15 may terminate at the proximal end 16 of the elongated neck 2. In this embodiment, the opening of the other hole 15 located at the proximal end 16 of the elongated neck 2 allows access to the actuating member 30. The proximal end of the actuating member 30 may include a connection feature 52 for attaching a corresponding connection feature 52 of the tool 50 to the actuating member 30 for actuating the actuating member 30. In some embodiments, the test head, which may be attached to the proximal end 16 of the elongated neck 2, may include an opening or orifice through the test head to provide passage to the connection feature 32 for operating the actuating member 30. For example, the tool 50 may be inserted through the opening or orifice in the test head to engage the connection feature 52 to the connection feature 32. In some embodiments, the tool 50 may be integrated into the test head itself. Figures 1 to 7 As in the same implementation, the actuating member 30 may include a threaded surface 17 that engages with a corresponding internal threaded surface of another hole 15, such that rotation of the actuating member 30 within the other hole 15 (e.g., using tool 50) causes the actuating member 30 to move along the other hole 5, thereby operating the lever 20.

[0130] To operate the actuating member 30, it can be moved along another hole 15 (along... Figure 8 The direction indicated by the middle arrow "A" (generally parallel to the longitudinal axis of the elongated neck 2 in this embodiment) moves toward the second end 22 of the lever 20. Therefore, the tip 34 of the actuating member 30 can contact the second end 22 of the lever 20, thereby moving the lever 20. This causes the lever 20 to rotate about the pivot mount 92 (along...). Figure 11 (In the direction indicated by the middle arrow "B"). This, in turn, causes the mating surface 26 to push (as shown). Figure 11 (As indicated by the arrow marked "C"), the proximal end 64 of the tubular device 60 is engaged to lock the proximal end 64 within the hole 8. To release the proximal end 64 of the tubular device 60, the actuating member 30 can be engaged along another hole 15 (i.e., along the hole with...). Figure 8 , Figure 10 and Figure 11 (The direction marked "A" in the middle is opposite to the direction indicated by the arrow) retracts, thus allowing lever 20 to move in the direction opposite to the direction indicated by the arrow. Figure 11 The arrow marked "B" in the middle pivots back in the opposite direction, thereby disengaging the mating surface 26 from the proximal end 64.

[0131] As described above, in some embodiments, the engagement surface 26 of the lever 20 may be curved. This allows the engagement surface to substantially match the curved outer surface of the proximal end 64 of the femoral tube device 60. By matching the curved outer surface of the proximal end 64 of the femoral tube device 60, the size of the engagement area between the engagement surface 26 and the proximal end 64 can be increased to achieve a more robust connection between the test neck 10 and the femoral tube device 60.

[0132] and Figures 1 to 7 Similar to the embodiments described above, the locking mechanism generally resists movement of the femoral tube device 60 along the longitudinal axis of the hole 8, thereby preventing accidental movement of the test neck 10 relative to the femoral tube device 60 and / or preventing accidental removal of the proximal end of the femoral tube device 60 from the hole 8. Also as described above, in some embodiments, the test neck 10 and / or the femoral tube device 60 may include features for resisting rotation of the femoral tube device 60 within the hole 8 (i.e., about the longitudinal axis of the hole 8). It should be noted that even without such additional features, the frictional force associated with pressing the engagement surface 26 against the proximal end of the femoral tube device 60 can also resist rotation of the femoral tube device 60 within the hole 8 to some extent.

[0133] exist Figures 8 to 16 In the illustrated embodiment, the inner surface of the bore 8 may have a profiled surface (e.g., profiled surface 87) of the type described above for engagement with a corresponding profiled outer surface (e.g., profiled outer surface 67) of the proximal end 64 of the tubular device 60. As described above, the engagement of these profiled surfaces resists rotation of the tubular device 60 relative to the test neck 10 about the longitudinal axis of the bore 8 / tubular device 60. Also as described above, it is envisioned that the profiled surface (e.g., profiled surface 87) may be located only on the engagement surface 26.

[0134] Similarly, the profiled surfaces may include splines of corresponding shapes that extend generally parallel to the longitudinal axes of the tubular fitting 60 and the bore 8. Other types of profiled surfaces may be used. Note that a portion of the profiled surface 87 on the mating surface 26 may form one or more teeth (see, for example, see...). Figure 9 The tooth 27 in the middle engages with the contour surface on the proximal end 64 of the femoral tube device 60.

[0135] As mentioned above Figures 1 to 7 According to the embodiments described, the proximal end 64 of the femoral tube device 60 may include a circumferential lip or groove for engaging with the engagement surface of the locking mechanism of the test neck 10.

[0136] In this embodiment, the actuating member may be provided with a widened portion 35 located between the proximal end and the tip 34 of the actuating member 30. This widened portion 35 may have a diameter substantially the same as the diameter of the other hole 15. This helps ensure that the longitudinal axis of the actuating member 30 remains substantially parallel to the longitudinal axis of the other hole 15 when the actuating member 30 moves within the other hole 15. At least some of the other components of the actuating member 30 may have a narrower profile than the profile of the other hole in order to reduce friction between the actuating member 30 and the other hole 15.

[0137] In this embodiment, the lever 20 may include features for assisting the second end 22 of the lever 20 to engage with the tip 34 of the actuating member 30. (Reference) Figure 9 as well as Figure 8 , Figure 10 and Figure 11 As shown in the cross-section, in this embodiment, the second end 22 of the lever 20 includes an actuation member receiving opening 96. The actuation member receiving opening 96 is located on the inner side of the lever 20 and positioned such that when the actuation member 30 moves along the... Figure 8 , Figure 10 and Figure 11 When moving in the direction indicated by the arrow marked "A", the tip 32 of the actuating member 30 can slide into the actuating member receiving opening 96. The actuating member receiving opening 96 may have a funnel-shaped profile to guide the tip 32 toward the inner surface 94. The tip 32 may engage with and abut against the inner surface 94 to actuate the lever 20. The inner surface 94 itself may be angled such that when, for example, the engaging surface 26 engages with the proximal end 64 of the tubular device 60, the surface normal of the inner surface 94 is substantially parallel to the longitudinal axis of the actuating member 30. The funnel-shaped profile of the actuating member receiving opening 96 and the aforementioned orientation of the inner surface 94 help ensure that the actuating member 30 and / or the lever 20 have little or no movement outside the coronal plane when the actuating member 30 and the lever 20 are being operated.

[0138] In some embodiments, features may be included to facilitate the proper rotation of lever 20. For example, features may be provided to prevent lever 20 from interfering with the insertion / removal hole 8 of the proximal end 64 of the tubular device 60. Now regarding... Figures 12 to 16 Some examples describing this type of feature.

[0139] Figure 12 A cross-section of the test neck 10 according to yet another embodiment of this disclosure is shown. Figure 12 The implementation plan is similar in many ways to Figures 8 to 11 The implementation scheme will be described here, and only the substantial differences will be described.

[0140] In this embodiment, the second end 22 of the lever 20 includes an angled surface 112. The angled surface 112 faces the hole 8. In use, when the proximal end 64 of the tubular device 60 is inserted into the hole 8, the proximal end 64 pushes against and rides on the angled surface 112, causing the lever 20 to move along... Figure 12 The lever 20, and in particular the engagement surface 26, pivots in the direction indicated by the arrow marked "D". This has the effect of moving the engagement surface 26 away from the proximal end 64 of the tubular device 60. This prevents damage to the proximal end of the tubular device 60 when the lever 20, and especially the engagement surface 26, is inserted into the proximal end 64 of the tubular device 60 into the insertion hole 8.

[0141] Although it has been about Figure 12 An angled surface 112 is described, but it should be understood that this type of angled surface can be included in Figures 8 to 16 In any of the embodiments shown.

[0142] Figure 13 A cross-section of the test neck 10 according to another embodiment of this disclosure is shown. Figure 13 The implementation plan is similar in many ways to Figures 8 to 12 The implementation scheme will be described here, and only the substantial differences will be described.

[0143] In this embodiment, the lever 20 further includes a biasing element 104. In this embodiment, the biasing element 104 is mounted on the inside of the first end 24 of the lever 20. The first end of the biasing element 104 can abut against the inner sidewall 106 of the cavity 90, thereby biasing the lever 20 such that the first end 24 of the lever 20 is biased toward the hole 8, while the engagement surface 26 is biased away from the hole 8. In some embodiments, the first end of the biasing element 104 can be received in a blind hole located in the inner sidewall of the cavity 90. Similarly, a second end of the biasing element 104 can be received in a blind hole located in the first end 24 of the lever 20.

[0144] The biasing element 104 can be operated to keep the engagement surface 26 away from the hole 8 before actuation of the actuating member 30. For example, this can prevent the engagement surface 26 from damaging the proximal end 64 of the tubular device 60 when it is inserted into the hole 8.

[0145] Although it has been about Figure 13 Bias element 104 is described, but it should be understood that this type of bias element can be included in Figures 8 to 16 In any of the embodiments shown.

[0146] Figure 13 The biasing element in the circuit includes a helical spring. However, it should be understood that other types of biasing elements may be used.

[0147] Figure 14 A cross-section of the test neck 10 according to yet another embodiment of this disclosure is shown. Figure 14 The implementation plan is similar in many ways to Figures 8 to 13 The implementation scheme will be described here, and only the substantial differences will be described.

[0148] In this embodiment, the biasing element 104 includes a leaf spring, instead of the above-mentioned... Figure 13 The aforementioned helical spring. For example... Figure 14 As can be seen, the leaf spring may include a zigzag pattern. In this example, the biasing element 104 may be integrally formed with the lever 20.

[0149] Although it has been about Figure 14 The (leaf spring) biasing element 104 is described, but it should be understood that this type of biasing element may be included in Figures 8 to 16 In any of the embodiments shown.

[0150] Figure 15 A cross-section of the test neck 10 according to another embodiment of this disclosure is shown. Figure 15 The implementation plan is similar in many ways to Figures 8 to 14 The implementation scheme will be described here, and only the substantial differences will be described.

[0151] In this embodiment, the first end 24 of the lever 20 includes a gripping feature 102. In this embodiment, the gripping feature 102 includes a protrusion extending upward from the body portion 4 to allow manual manipulation by a surgeon. Other forms of gripping features are contemplated, such as contoured or rough surfaces or a series of ridges.

[0152] The gripper feature 102 can be manually operated by the surgeon to manually actuate the lever 20, thereby moving the engagement surface 26 away from the proximal end 64 of the femoral canal instrument 60. In particular, the surgeon can use the gripper feature 102 to rotate the first end 24 of the lever toward the hole 8, causing the engagement surface 26 to pivot away from the hole 8.

[0153] In use, this allows the surgeon to ensure that the engaging surface 26 does not damage the proximal end 64 of the femoral tube device 60 when it is inserted into the hole 8. The surgeon can also use the gripping feature 102 to disengage the engaging surface 26 from the proximal end 64 of the femoral tube device 60 before attempting to remove the proximal end 64 from the hole 8.

[0154] Although it has been about Figure 15 Graspable feature 102 is described, but it should be understood that this type of graspable feature can be included in Figures 8 to 16 In any of the embodiments shown. In fact, Figure 13 , Figure 14 and Figure 16 All of the implementation schemes shown include this feature.

[0155] Figure 16 A cross-section of the test neck 10 according to yet another embodiment of this disclosure is shown. Figure 16 The implementation plan is similar in many ways to Figures 8 to 14 The implementation scheme will be described here, and only the substantial differences will be described.

[0156] In this embodiment, the actuating member 30 has a distal end (tip 32 located at the distal end) for engaging with the second end 22 of the lever 20 to actuate the lever 20. In this embodiment, the distal end also includes a recess 108. In this embodiment, the recess 108 includes a narrowed portion of the actuating member 30. The second end 22 of the lever 20 also includes a protrusion 95 corresponding to the recess 108.

[0157] In this embodiment, when the actuating member 30 moves toward the second end 22 of the lever 20, the proximal edge 110 of the recess 108 contacts the protrusion 95, thereby pushing the engagement surface 26 against (see...). Figure 16 The proximal end 64 of the femoral tube device 60.

[0158] The recess 108 is also operable to pivot the lever 20 such that when the actuating member 30 is retracted along the other hole 15, the engaging surface 26 moves away from the proximal end 64 of the tubular device 60. Specifically, when the actuating member 30 is retracted along the other hole 15, the distal edge 114 of the recess 108 contacts the protrusion 95, thereby causing the lever 20 to pivot and move the engaging surface 26 away from the proximal end 64 of the tubular device 60.

[0159] The recess 108 and the corresponding protrusion 95 can thus be fitted together to ensure that the engagement surface 26 disengages from the proximal end 64 of the tubular device 60, so that the engagement surface 26 does not inhibit the removal of the proximal end 64 from the hole 8.

[0160] Although it has been about Figure 16 The description includes recesses and corresponding protrusions, but it should be understood that this type of recess and corresponding protrusion can be included in... Figures 8 to 16 In any of the embodiments shown. In fact, Figure 15 The illustrated implementation includes such features. Specifically, in Figure 15In this embodiment, the tip 32 of the actuating member 30 is substantially spherical. This forms a neck located proximally to the tip 32, which constitutes a recess of the type described above. A corresponding protrusion in this embodiment may be formed by the lip of the actuating member receiving opening 96. In this embodiment, when the actuating member 30 is retracted along another hole 15, the recess formed by the neck acts on the lip of the actuating member receiving opening 96, thereby causing the engagement surface 26 of the lever 20 to rotate away from the tubular device 60. Similarly, this prevents the engagement surface 26 from abutting against the tubular device 60, which could otherwise hinder proper removal of the proximal end 64 of the tubular device 60 from the hole 8.

[0161] According to one embodiment of this disclosure, a test neck (e.g., the one mentioned above) can be provided. Figures 1 to 16 The method of attaching the test neck 10 of the described type to a tubular device (e.g., a reamer 60 or any of the other tubular devices described above). The method may include inserting the proximal end 64 of the tubular device (e.g., the reamer 60) into the hole 8 of the test neck 10. The method may also include actuating the second end 22 of the lever 20 to press the engagement surface 26 against the proximal end 64 of the tubular device (e.g., the reamer 60).

[0162] As described above, the method may include actuating the second end 22 of the lever 20 using an actuating member (e.g., actuating member 30). The method may also include attaching a tool (e.g., tool 50) to a connection feature 32 of the actuating member 30 for actuating the actuating member 30. When using the test neck 10, the method may also include viewing the actuating member 30 through a window (e.g., window 12) in the elongated neck 2 of the test neck 10. The method may also include cleaning the test neck 10 before (re)use. Window 12 may facilitate this cleaning by allowing better access to another hole 15 in which the actuating member 30 may be located.

[0163] According to one embodiment of this disclosure, a surgical kit may be provided. The surgical kit may include the components described above. Figures 1 to 16 The type of test neck 10 is described above. The surgical kit may also include femoral canal instruments of the type described above (e.g., a reamer 60). It is envisioned that the kit may include additional components (e.g., one or more test necks of the type described above in different sizes, one or more different types of femoral canal instruments (e.g., different reamers), one or more test heads, and / or any other components).

[0164] Therefore, a test neck for hip surgery and a method for attaching the test neck to a femoral tube device have been described. The test neck includes a body portion having an aperture for receiving a proximal end of the femoral tube device. The test neck also includes an elongated neck extending from the body portion. The test neck also includes a locking mechanism with a lever. The lever has a first end that may be integral with the body portion or pivotally mounted. The lever also has a second end. The lever further has an engagement surface that may be located between the first end and the second end, or may be located at the second end. The second end of the lever is actuable to push the engagement surface against the proximal end of the femoral tube device, thereby securing the proximal end of the femoral tube device within the aperture.

[0165] Although specific embodiments of this disclosure have been described, it should be understood that many modifications / additions and / or substitutions may be made within the scope of the claims.

Claims

1. A test neck for hip surgery, the test neck comprising: The main body includes a hole for receiving the proximal end of a tubular device; A long, slender neck that extends from the main body portion; The locking mechanism includes a lever, the lever having: First end; Second end; as well as mating surfaces, The second end of the lever is actuable to push the engagement surface against the proximal end of the tubular device, thereby securing the proximal end of the tubular device within the hole. The locking mechanism further includes an actuating member for engaging with the second end of the lever to actuate the lever. The test neck includes another hole, and the actuating member extends within the other hole. The other hole extends within the elongated neck.

2. The test neck according to claim 1, wherein the other hole extends substantially parallel to the longitudinal axis of the elongated neck.

3. The test neck of claim 1, wherein the proximal end of the elongated neck has an opening leading to the other hole, and wherein the proximal end of the actuating member includes a connection feature for connecting a tool to the actuating member to actuate the actuating member.

4. The test neck of claim 3, wherein the proximal end of the elongated neck is configured to be attached to the test head.

5. The test neck according to claim 1, wherein: The other hole has a threaded surface, and The actuating member includes a threaded surface for engaging with the threaded surface of the other hole to allow the actuating member to rotate, thereby moving the actuating member along the other hole to engage with the second end of the lever.

6. The test neck according to claim 1, comprising a window for observing the actuating member within the other hole.

7. The test neck according to claim 1, wherein the first end of the lever is located on the lateral side of the test neck.

8. The test neck of claim 1, wherein the engagement surface of the lever is curved to match the curved outer surface of the proximal end of the femoral tube device.

9. The test neck of claim 1, wherein the inner surface of the hole has a contoured surface for engaging with a corresponding contoured outer surface of the proximal end of the tubular device to prevent the tubular device from rotating about the longitudinal axis of the tubular device relative to the test neck.

10. The test neck of claim 1, wherein the first end of the lever is integral with the body portion, and wherein the engagement surface is located between the first end of the lever and the second end of the lever.

11. The test neck of claim 10, wherein the second end of the lever is located within the elongated neck.

12. The test neck of claim 10, wherein the lever includes at least one dog-leg-shaped bend.

13. The test neck according to claim 1, wherein the first end of the lever is pivotally mounted within the test neck.

14. The test neck of claim 13, wherein the actuating member has for engaging with the second end of the lever to actuate the distal end of the lever, and wherein the distal end includes a recess for engaging with a corresponding protrusion on the second end of the lever to move the engagement surface away from the proximal end of the tubular device when the actuating member is withdrawn along the other hole.

15. The test neck of claim 13, wherein the second end of the lever includes an actuation member receiving opening.

16. The test neck of claim 13, wherein the first end of the lever includes a gripping feature for manually actuating the lever to move the engagement surface away from the proximal end of the femoral tube device.

17. The test neck of claim 13, wherein the second end of the lever includes an angled surface facing the hole to allow the proximal end of the tubular device to ride on the angled surface to pivot the lever so as to move the engagement surface away from the proximal end of the tubular device when the proximal end of the tubular device is inserted into the hole.

18. The test neck of claim 13, wherein the lever further comprises a biasing element for biasing the first end of the lever toward the hole, thereby biasing the engagement surface away from the hole.

19. A surgical kit comprising: The test neck according to any of the preceding claims; as well as Femoral tube appliance.

20. The kit of claim 19, wherein the tubing device is selected from: Femoral tube preparation equipment, the femoral tube preparation equipment includes: Reamer, drill bit, or test rod; as well as Implants.

21. The kit of claim 19, wherein the proximal end of the femoral tube device includes a circumferential lip or groove for engaging with the engagement surface of the locking mechanism of the test neck.

22. A method of attaching a test neck to a femoral canal device, the test neck comprising: The main body includes a hole for receiving the proximal end of a tubular device; A long, slender neck that extends from the main body portion; The locking mechanism includes a lever, the lever having: First end; Second end; as well as mating surfaces, The second end of the lever is actuable to push the engagement surface against the proximal end of the tubular device, thereby securing the proximal end of the tubular device within the hole. The method includes: Insert the proximal end of the femoral tube device into the hole; as well as Actuate the second end of the lever to push the engagement surface against the proximal end of the tubular device. The method includes engaging the actuating member of the locking mechanism with the second end of the lever to actuate the lever. The test neck includes another hole, and the actuating member extends within the other hole. The other hole extends within the elongated neck.

23. The method of claim 22, wherein the proximal end of the actuating member includes a connecting feature, and wherein the method further includes connecting a tool to the actuating member and then to the connecting feature for actuating the actuating member.

24. The method of claim 22, further comprising viewing the actuating member through a window in the elongated neck of the test neck.

25. The method of claim 22, wherein the first end of the lever is integral with the body portion, and wherein the engagement surface is located between the first end of the lever and the second end of the lever.

26. The method of claim 22, wherein the first end of the lever is pivotally mounted within the test neck.

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