Search

US-20260123972-A1 - CHUCK SYSTEM FOR A POWERED SURGICAL IMPACTOR

US20260123972A1US 20260123972 A1US20260123972 A1US 20260123972A1US-20260123972-A1

Abstract

A chuck for a powered surgical impactor can include a first body insertable into the powered surgical impactor and defining a first bit bore, a second body adapted to receive the first body; and a third body receivable at least partially within the second body and defining a second bit bore. The third body can define a lock projection extending radially inward into the second bit bore; and the third body and the second body can be adapted to rotate relative to the first body to move the lock projection between an unlocked position, in which the lock projection is located to allow insertion of a surgical instrument into the chuck, and an unlocked position, in which the lock projection is located to prevent removal of the surgical instrument from the chuck.

Inventors

  • James Grimm
  • Alexander Slocum
  • Canan Ciesielski
  • Salvador Torres
  • Pedro Luis Moreno Delgado
  • Jaime Rodenas

Assignees

  • ZIMMER, INC.

Dates

Publication Date
20260507
Application Date
20251229

Claims (20)

  1. 1 - 20 . (canceled)
  2. 21 . A chuck for a powered surgical impactor, the chuck comprising: a chuck body including a proximal portion insertable into the powered surgical impactor and a distal portion defining a first bit bore; a lock knob formed as a single integrated structure positioned over the chuck body, the lock knob defining a second bit bore and including a lock projection extending radially inward into the second bit bore; and a rear threaded cap securing the lock knob to the chuck body; wherein the lock knob is rotatable relative to the chuck body to move the lock projection between a locked position and an unlocked position.
  3. 22 . The chuck of claim 21 , wherein the distal portion of the chuck body defines a distal face defining a bearing groove, and wherein the chuck further comprises a forward bearing positioned in the bearing groove between the distal face of the chuck body and the lock knob.
  4. 23 . The chuck of claim 22 , wherein the forward bearing comprises one of a solid bearing or a lubricated o-ring adapted to reduce rotational friction between the lock knob and the chuck body.
  5. 24 . The chuck of claim 21 , wherein the chuck body defines opposing apertures, and wherein the chuck comprises at least one ball plunger received within the chuck body and adapted to engage recesses within the lock knob to provide detents at the unlocked position and the locked position.
  6. 25 . The chuck of claim 24 , wherein the chuck comprises two ball plungers received in the opposing apertures.
  7. 26 . The chuck of claim 24 , wherein each ball plunger comprises an insert receivable within one of the opposing apertures; a ball at least partially received within the insert and extending radially outward from the chuck body; and a spring biasing the ball outward to engage the recesses within the lock knob.
  8. 27 . The chuck of claim 21 , wherein the lock knob defines a distal internal threaded surface, and wherein the rear threaded cap is threadedly engaged with the distal internal threaded surface to secure the lock knob to the chuck body.
  9. 28 . The chuck of claim 27 , further comprising a sealing element positioned between the rear threaded cap and a proximal face of the chuck body to establish a fluid tight seal.
  10. 29 . The chuck of claim 21 , wherein the chuck body defines a first cylindrical surface forming a portion of the first bit bore; and a third cylindrical surface located distally to the first cylindrical surface; wherein the first cylindrical surface and the third cylindrical surface are adapted to concentrically center a bit of a surgical instrument within the chuck body.
  11. 30 . The chuck of claim 21 , wherein the lock projection forms an eccentric cam structure adapted to engage a bit received within the chuck body to secure the bit when the lock projection is in the locked position.
  12. 31 . The chuck of claim 30 , wherein the eccentric cam structure of the lock projection is adapted to move both radially and laterally relative to a central axis defined by the first bit bore and the second bit bore during rotation of the lock knob between the unlocked position and the locked position.
  13. 32 . The chuck of claim 21 , wherein the lock projection forms a semi-annular profile extending around a portion of the second bit bore.
  14. 33 . The chuck of claim 21 , wherein the lock projection defines a proximal end surface extending substantially orthogonally to a central axis defined by the first bit bore and the second bit bore, wherein the proximal end surface is adapted to engage a distal end surface of a bit to limit distal translation of the bit when the lock projection is in the locked position.
  15. 34 . The chuck of claim 33 , wherein when the lock projection is in the unlocked position, a proximal end surface of the lock projection is laterally offset from a central axis defined by the first bit bore and the second bit bore to enable insertion of a bit into the chuck body; and when the lock projection is in the locked position, the proximal end surface intersects the central axis at an orthogonal angle to prevent removal of the bit from the chuck body.
  16. 35 . A powered surgical impactor system comprising: a powered surgical impactor; a chuck including: a chuck body including a proximal portion insertable into the powered surgical impactor and a distal portion defining a first bit bore; a lock knob formed as a single integrated structure positioned over the chuck body, the lock knob defining a second bit bore and including a lock projection extending radially inward into the second bit bore; and a rear threaded cap threadedly engaged with a distal internal threaded surface on the lock knob to secure the lock knob to the chuck body; wherein the lock knob is rotatable relative to the chuck body to move the lock projection between a locked position and an unlocked position; and a surgical instrument including a bit insertable into the first bit bore of the chuck body and through the second bit bore of the lock knob to operatively couple the surgical instrument to the powered surgical impactor.
  17. 36 . The system of claim 35 , wherein the chuck body defines a first cylindrical surface forming a portion of the first bit bore and a distal face defining a bearing groove.
  18. 37 . The system of claim 36 , wherein the bit defines a second cylindrical surface adapted to engage the first cylindrical surface of the chuck body to concentrically center the bit within the chuck body.
  19. 38 . The system of claim 35 , wherein the lock projection forms an eccentric cam structure with a semi-annular profile.
  20. 39 . The system of claim 38 , wherein in the unlocked position, the lock projection is located to allow insertion of the bit into the chuck body; and in the locked position, the eccentric cam structure engages the bit to prevent removal of the bit from the chuck body.

Description

CLAIM OF PRIORITY This application is a continuation of U.S. patent application Ser. No. 18/593,177, filed on Mar. 1, 2024, which claims the benefit of U.S. Provisional Patent Application Ser. No. 63/450,311, filed on Mar. 6, 2023, the benefit of priority of each of which is claimed hereby, and each of which is incorporated by reference herein in its entirety. TECHNICAL FIELD The disclosure of the present application pertains generally, but not by way of limitation, to systems and methods for providing axial impaction forces to surgical instruments. More particularly, but not by way of limitation, the disclosure of the present application pertains to systems and methods for operatively coupling surgical instruments to powered surgical impactors. BACKGROUND During orthopedic surgeries, surgical instruments such as handheld impactors can be used to provide axial impaction forces for various purposes, such as to drive implants into bone, cut or shape bone surfaces, or move bone fragments or bone parts into desired positions. For example, in total hip arthroplasties (e.g., hip replacement procedures), axial impaction forces can be used to help prepare the acetabular cup or the femur of a patient to receive an implant, such as by driving an acetabular implant into the acetabulum, or a broach into the femur to shape an osseous envelope for a femoral implant. The surgical instrument can be manually positioned by the surgeon with respect to a patient by hand, or the surgical instrument can be connected to a robotic arm to help the surgeon more precisely maintain the impactor in one or more positions with respect to the patient. Generally, such axial impaction forces have been imparted to orthopedic surgical instrument via manual mallet strikes thereto. However, in recent years, powered surgical impactors have become available, which can provide more consistent and repeatable axial impaction forces to orthopedic surgical instruments. BRIEF DESCRIPTION OF THE DRAWINGS In the drawings, which are not necessarily drawn to scale, like numerals can describe similar components in different views. Like numerals having different letter suffixes can represent different instances of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed in the present document. FIG. 1A illustrates a partial cutaway view of a chuck system, in accordance with at least one example of the present application. FIG. 1B illustrates a partial cutaway view of a chuck system, in accordance with at least one example of the present application. FIG. 1C illustrates a chuck coupled to a surgical impactor, in accordance with at least one example of the present application. FIG. 2 illustrates an exploded view of a chuck, in accordance with at least one example of the present application. FIG. 3 illustrates an exploded view of a chuck system, in accordance with at least one example of the present application. FIG. 4A illustrates a cross-section of a chuck coupled to a surgical impactor, in accordance with at least one example of the present application. FIG. 4B illustrates a partial cutaway of a chuck system, in accordance with at least one example of the present application. FIG. 5 illustrates a chuck partially inserted into a surgical impactor, in accordance with at least one example of the present application. FIG. 6 illustrates a cross-section of a chuck coupled to a surgical impactor 102, in accordance with at least one example of the present application. FIG. 7 illustrates a plurality of surgical instruments for use with the chuck of FIGS. 1-6, in accordance with at least one example of the present application. FIG. 8 illustrates a method of operatively coupling a surgical instrument to a surgical impactor, in accordance with at least one example of the present application. FIG. 9A illustrates an exploded view of a chuck system, in accordance with at least one example of the present application. FIG. 9B illustrates a cross-section of a chuck system, in accordance with at least one example of the present application. FIG. 9C illustrates a second cross-section of a chuck system, in accordance with at least one example of the present application. DETAILED DESCRIPTION The following description and the drawings sufficiently illustrate specific examples to enable those skilled in the art to practice them. Other examples can incorporate structural, process, or other changes. Portions and features of some examples can be included in, or substituted for, those of other examples. Examples set forth in the claims encompass all available equivalents of those claims. A total hip replacement procedure, or total hip arthroplasty, can involve making an access incision in a hip region of a patient. Various surgical devices configured for intra-procedurally reaming, cutting, broaching, impacting, or otherwise preparing bone surfaces of a patient during total hip arthroplasty can be inserted thr