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Torque limiting locking cap

A torque-limiting, locking-cap technology used in fixtures, manufacturing tools, wrenches, etc. to solve problems such as driving screws through, damaging plates, and wearing bone

Active Publication Date: 2022-03-22
DEPUY SYNTHES PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the surgeon applies too much torque when tightening these screws, the bone may wear down
As a result, the screw will not be held securely by the bone
Also, if screws are used to secure bone plates, excessive torque on the screws can damage the plate or even drive the screw through the plate

Method used

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  • Torque limiting locking cap
  • Torque limiting locking cap
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Examples

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Embodiment Construction

[0033] The description and drawings illustrate the principles of the invention. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described or shown herein, embody the principles of the invention and are included within the scope of the invention. Moreover, all embodiments described herein are primarily for teaching purposes to assist the reader in understanding the principles of the invention and concepts proposed by the inventors to advance the state of the art, and are not to be construed as being limited to such specifically set forth examples and condition. Additionally, the term "or" as used herein means a non-exclusive or (ie, and / or), unless otherwise stated (eg, "or" or "or instead"). Furthermore, the various embodiments described herein are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments.

[0034] When ...

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PUM

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Abstract

The present invention provides a torque limiting actuator system comprising: a torque limiting actuator comprising: a handle having a locking cap engaging protrusion; a shaft having a cam portion including a cam engagement feature; and a locking The cover, the locking cover includes: a mating recess including a plurality of scallops along an outer edge of the mating recess, and wherein the plurality of scallops are configured to interface with the first mating feature; having a through hole fit The through hole of the feature, the through hole mating feature is configured to meet the cam mating feature, wherein the locking cap is configured to engage the torque limiting driver to lock the rotation of the shaft relative to the handle.

Description

technical field [0001] Various exemplary embodiments disclosed herein generally relate to torque limiting locking caps. Background technique [0002] Surgeons use drivers such as screwdrivers to drive screws into bone during various surgical procedures. If the surgeon applies too much torque when tightening these screws, the bone may wear down. As a result, the screws are not held securely by the bone. Furthermore, if the screws are used to fix bone plates, excessive torque on the screws can damage the plates or even drive the screws through the plates. Torque limiting drivers can be used to limit torque to prevent wear of the hole in the bone and prevent overtightening of screws that could damage the bone plate. Additionally, a torque limiting driver can be used to ensure that the screw has been sufficiently tightened. This can be accomplished by the surgeon tightening the screw until the slip of the torque limiting driver indicates that the torque limit has been reache...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/88B25B15/02B25B23/14B25B23/142
CPCA61B17/8875B25B15/02B25B23/141B25B23/0042B25B23/1427A61B17/888B25B23/0035
Inventor R.希利P.沃特A.内尔森S.格瑞克
Owner DEPUY SYNTHES PROD INC