Abstract: Procedures for performing shoulder arthroplasties are disclosed, such procedures including performing various preparation steps for the humerus and glenoid to receive implants, and proceeding through placement of implants and/or prostheses at the surgical site. The techniques disclosed afford the benefit of being tissue sparing, and thus minimize damage or trauma to tissue at the surgical site, including allowing the subscapularis tendon to remain intact throughout the procedures. Various devices that enable the procedures are disclosed, including but not limited to humeral resection guides, glenoid guides, humeral guides, and handle assemblies, among other tools, components, and the like that can be used with such devices. In at least some embodiments, preparation steps include resecting a humeral head, and reaming and broaching the resulting humeral resection surface to receive an implant, and then a prosthesis, as well as reaming a glenoid so it can also receive an implant.

Abstract: Systems, devices, and methods for preparing a glenoid to receive an implant using a transhumeral approach are disclosed. Various tools, such as a reamer attachment, can be disposed in a glenohumeral space proximate to the glenoid, and then a driver or other shaft can be separately introduced into the glenohumeral space. The driver can be coupled to the reamer attachment and then operated to treat or otherwise prepare the glenoid to receive an implant. After the reamer attachment is no longer needed to perform the desired treatment, it can be detached from the driver and both the reamer attachment and driver can be removed from the glenohumeral space. The disclosed systems, devices, and methods can be performed with or without a guidewire, and various other instruments, such as those for identifying a center of the glenoid, can be used.

Abstract: Surgical systems and instruments for performing shoulder repair procedures using a transhumeral approach are disclosed. The systems include a humeral guide configured to set a path of travel for a guide pin that operates bone preparation instruments with a transhumeral approach. The guide pin can selectively engage one or more bone preparation instruments disposed at a humeral resection surface and operate the tool(s) by powering the guide pin from below the humeral resection surface. A handle assembly can be used to position bone preparation instruments at the surgical site, with the handle assembly being selectively mountable to the humeral guide. The humeral guide can also have a sizer attachment coupled to it to assist in measuring and sizing locations for an implant to be placed on the humeral resection surface. Measuring, reaming, broaching, and implanting actions can all be performed with assistance from the humeral guide.

Abstract: Devices and methods for performing a humeral cut are disclosed, the humeral cut being performed to prepare a surgical site to receive a prosthesis. In at least some embodiments, a humeral resection guide is provided that includes a plurality of arms that can be selectively coupled and decoupled from each other, thus enabling the arms to be individually delivered to a surgical site and then subsequently coupled together. This type of configuration allows for less trauma to the tissue in and/or surrounding the shoulder joint because the components being delivered to the surgical site are smaller during delivery than when in use. Additional features are provided that help create a preferred fit with respect to the humeral head to set a desired resecting plane, as well as to insure cutting tools do not harm surrounding tissue. Various embodiments of these devices, and methods of using the same, are also disclosed.

Abstract: Reamer instruments and related methods are disclosed for use in preparing bone, such as a glenoid bone surface, to receive an implant requiring one of two or more possible surface geometries. Described reamer instruments can have a modular or multi-component design. A minimal number of components can be particular to a particular required geometry, which can allow assembly and use of reamer instruments of the present disclosure to be flexible, intuitive, and efficient. In some embodiments, a disposable reamer head assembly can be driven by a disposable drive tip through a pin-on-pin connection. The remaining components of the reamer instrument can be sterilized and re-used. To prepare bone for a half-wedge implant, a half-wedge housing can be coupled to a reamer instrument handle and a depth stop can be coupled to the housing to achieve the required geometry. Alternatively, a full-wedge housing can be coupled to the instrument handle.

Abstract: Reamer instruments and related methods are disclosed for use in preparing bone, such as a glenoid bone surface, to receive an implant requiring one of two or more possible surface geometries. Described reamer instruments can have a modular or multi-component design. A minimal number of components can be particular to a particular required geometry, which can allow assembly and use of reamer instruments of the present disclosure to be flexible, intuitive, and efficient. In some embodiments, a disposable reamer head assembly can be driven by a disposable drive tip through a pin-on-pin connection. The remaining components of the reamer instrument can be sterilized and re-used. To prepare bone for a half-wedge implant, a half-wedge housing can be coupled to a reamer instrument handle and a depth stop can be coupled to the housing to achieve the required geometry. Alternatively, a full-wedge housing can be coupled to the instrument handle.

Abstract: Reamer instruments and related methods are disclosed for use in preparing bone, such as a glenoid bone surface, to receive an implant requiring one of two or more possible surface geometries. Described reamer instruments can have a modular or multi-component design. A minimal number of components can be particular to a particular required geometry, which can allow assembly and use of reamer instruments of the present disclosure to be flexible, intuitive, and efficient. In some embodiments, a disposable reamer head assembly can be driven by a disposable drive tip through a pin-on-pin connection. The remaining components of the reamer instrument can be sterilized and re-used. To prepare bone for a half-wedge implant, a half-wedge housing can be coupled to a reamer instrument handle and a depth stop can be coupled to the housing to achieve the required geometry. Alternatively, a full-wedge housing can be coupled to the instrument handle.

Abstract: A stencil printer includes a stencil having a top surface and a bottom surface, a material applicator to apply material on the top surface of the stencil, and a stencil wiper assembly to clean the bottom surface of the stencil in a y-axis direction. The stencil wiper assembly has a wiper blade assembly configured to engage the bottom surface of the stencil and wipe the bottom surface of the stencil when moving the stencil wiper blade assembly along a stencil wiper gantry. The stencil wiper assembly further includes a spot cleaner assembly movably secured to the stencil wiper assembly. The spot cleaner assembly is configured to move in an x-axis direction and to spot clean the bottom of the stencil. A method for spot cleaning a stencil is further disclosed.

Abstract: A stencil printer includes a stencil having a top surface and a bottom surface, a material applicator to apply material on the top surface of the stencil, and a stencil wiper assembly to clean the bottom surface of the stencil in a y-axis direction. The stencil wiper assembly has a wiper blade assembly configured to engage the bottom surface of the stencil and wipe the bottom surface of the stencil when moving the stencil wiper blade assembly along a stencil wiper gantry. The stencil wiper assembly further includes a spot cleaner assembly movably secured to the stencil wiper assembly. The spot cleaner assembly is configured to move in an x-axis direction and to spot clean the bottom of the stencil. A method for spot cleaning a stencil is further disclosed.