Insert press and related method

Patent metadata

Field	Value
Publication number	US-9833339-B2
Application number	US-201514609662-A
Country	US
Kind code	B2
Filing date	Jan 30, 2015
Priority date	Feb 19, 2014
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

An insert press that has a threaded shaft with a distal end is disclosed. An insert driver is disposed at the distal end of the threaded shaft. The insert press also includes a press housing that provides a bore through which the threaded shaft extends. The bore is transformable from a first condition in which the threaded shaft is threadably translatable in the bore to a second condition in which the threaded shaft is non-threadably translatable in the bore.

First claim

What is claimed is:

1. An insert press, comprising:
a threaded shaft having a distal end;
an insert driver disposed at the distal end of the threaded shaft; and
a press housing providing a bore through which the threaded shaft extends, the bore transformable from a first condition in which the threaded shaft is threadably translatable in the bore to a second condition in which the threaded shaft is non-threadably translatable in the bore,
wherein the bore is transformable from the first condition to the second condition by straight linear movement of a first wall section of the bore in a first direction along a first plane, the first wall section having a surface with non-circumferential threads, the bore including a second wall section opposite the first wall section which moves concurrently with the first wall section in the first direction along the first plane when transforming the bore from the first condition to the second condition.

2. The insert press of claim 1 , wherein the press housing includes a body member having a threaded shaft end and a handle end, the press housing further including a trigger member engaging the body member and movable relative to the body member.

3. The insert press of claim 1 , wherein the bore is transformable from the first condition to the second condition by straight linear movement of at least two wall sections of the bore that each have a surface with non-circumferential threads.

4. An insert press, comprising:
a threaded shaft having a distal end;
an insert driver disposed at the distal end of the threaded shaft; and
a press housing providing a bore through which the threaded shaft extends, the bore transformable from a first condition in which the threaded shaft is threadably translatable in the bore to a second condition in which the threaded shaft is non-threadably translatable in the bore, wherein the press housing comprises:
a lower member having a forward end and a rear end;
a handle member having a distal end and a proximal end, wherein the distal end extends from the rear end of the lower member;
a body member having a threaded shaft end and a handle end, wherein the handle end extends from the proximal end of the handle member; and
a trigger member engaging the body member and movable relative to the body member.

5. The insert press of claim 1 , wherein the press housing further comprises a body member and a trigger member, wherein the bore is partially provided by the body member and partially provided by the trigger member.

6. The insert press of claim 4 , wherein the body member provides a bore surface having non-circumferential threads.

7. The insert press of claim 4 , wherein the trigger member provides a bore surface having non-circumferential threads.

8. An insert press, comprising:
a threaded shaft having a distal end;
an insert driver disposed at the distal end of the threaded shaft; and
a press housing providing a bore through which the threaded shaft extends, the bore transformable from a first condition in which the threaded shaft is threadably translatable in the bore to a second condition in which the threaded shaft is non-threadably translatable in the bore, the press housing including a body member having a threaded shaft end and a handle end, the press housing further including a trigger member engaging the body member and movable relative to the body member, wherein the body member provides a bore surface having non-circumferential threads and the trigger member provides a bore surface having non-circumferential threads and wherein, when the bore is transformed into the first condition, the non-circumferential threads of the body member engage the threaded shaft and the non-circumferential threads of the trigger member engage the threaded shaft.

9. An insert press, comprising:
a threaded shaft having a distal end;
an insert driver disposed at the distal end of the threaded shaft; and
a press housing providing a bore through which the threaded shaft extends, the bore transformable from a first condition in which the threaded shaft is threadably translatable in the bore to a second condition in which the threaded shaft is non-threadably translatable in the bore, the press housing including a body member having a threaded shaft end and a handle end, the press housing further including a trigger member engaging the body member and movable relative to the body member, wherein the trigger member further comprises an aperture through which the threaded shaft extends, wherein the aperture and the bore are coaxial, the aperture sized to allow the threaded shaft to non-threadably translate in the bore when the bore is in the second condition.

10. The insert press of claim 7 , wherein the trigger member further comprises a shaft end and a lever end, wherein the shaft end provides a shelf member having a horizontal surface and a vertical surface, the vertical surface comprising the non-circumferential threads of the bore surface provided by the trigger member which engage the threaded shaft in the first condition.

11. The insert press of claim 4 , further comprising a latching means engaging the press housing body and configured to engage the trigger member and secure the trigger member in the first condition.

12. The insert press of claim 11 , wherein the latching means engages the trigger member at a latch boss which extends from a surface of the trigger member.

13. The insert press of claim 4 , further comprising a biasing means that engages the trigger member and the body member and biases the trigger member in the first condition.

14. The insert press of claim 1 , further comprising a table base configured to engage with and stabilize the press housing.

15. The insert press of claim 8 , wherein the trigger member further comprises an aperture through which the threaded shaft extends, wherein the aperture and the bore are coaxial, the aperture sized to allow the threaded shaft to non-threadably translate in the bore when the bore is in the second condition.

16. The insert press of claim 8 , wherein the bore is transformable from the first condition to the second condition by straight linear movement of at least one wall section of the bore having a surface with non-circumferential threads.

17. The insert press of claim 9 , wherein the bore is transformable from the first condition to the second condition by straight linear movement of at least one wall section of the bore having a surface with non-circumferential threads.

Assignees

• Zimmer Inc

Inventors

• Froidevaux Rolf
• Borries Paul

Classifications

• Y10T29/53848

  having screw operator · CPC title

• B30B1/20

  driven by hand · CPC title

• A61F2/4637 Primary

  for connecting or disconnecting two parts of a prosthesis · CPC title

• Y10T29/49876

  by snap fit · CPC title

• A61F2002/3208

  Bipolar or multipolar joints, e.g. having a femoral head articulating within an intermediate acetabular shell whilst said shell articulates within the natural acetabular socket or within an artificial outer shell · CPC title