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Surgical tunneling instrument with expandable section

An extended position and partial technology, applied in the field of surgical trocars with expandable elements, can solve problems such as pulling out channels, tissue anchors detaching from bones, etc., and achieve the effect of improving retention

Active Publication Date: 2018-07-17
LENKBAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inadequately secured knots pose a risk that the knot may be pulled out of the channel, causing the tissue anchor to disengage from the bone and subsequently requiring revision surgery and repair

Method used

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  • Surgical tunneling instrument with expandable section
  • Surgical tunneling instrument with expandable section
  • Surgical tunneling instrument with expandable section

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] reference Figure 1 to Figure 3 , Shows an instrument in the form of a trocar 100 according to the first embodiment of the present invention. The trocar 100 has a proximal end 102, a distal end 104, and a sharp end 110 at the distal end. The sharp end 110 is shown in the form of a solid or non-hollow sharp piercing tip 112. The trocar 100 also has a trocar head 109 that includes a sharp piercing tip 112. The trocar head according to the present invention may be characterized by having a solid sharp piercing tip like the sharp piercing tip 112. Alternatively, the trocar head according to the present invention may be characterized by having a blunt tip, a hollow tip or a drill bit. Regardless of the structure, the trocar according to the present invention is designed to form a smaller diameter channel in the bone. The channel can be formed by piercing or driving the distal end of the trocar through cortical bone and into cancellous bone.

[0042] The trocar head accordin...

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PUM

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Abstract

A trocar for preparing pilot holes, tunnels and other spaces within bone includes a piercing tip, a cutting element, and an expansion element for expanding the cutting element radially outwardly withrespect to a longitudinal axis of the trocar. The cutting element includes one or more cutting blades. The trocar also includes a hollow shaft. The hollow shaft can include one or more apertures axially and radially aligned with the one or more cutting blades. The expansion element can include an activation rod housed inside the hollow shaft. The one or more cutting blades can be in the form of two opposed cutting blades separated by a gap, the two opposed cutting blades being radially displaceable with respect to the longitudinal axis. The activation rod can include a wedge that partially enters the gap between the two opposed cutting blades to displace the cutting blades to an expanded position.

Description

[0001] Related application [0002] This application relates to a U.S. provisional application with serial number 62 / 256,205 filed on November 17, 2015 and claims the priority rights of the application. The content of the application is incorporated herein by reference in its entirety. Technical field [0003] The present invention generally relates to surgical instruments for preparing guide holes, channels, etc. in bones, and more specifically to an expandable element having an expandable element for preparing a bone channel with an enlarged section at a selected location within the bone channel Surgical trocar. Background technique [0004] In rotator cuff repair and other surgical procedures, one or more tissue anchors may be used to attach and fix tendons or tissues separated from the bone to the bone. The tissue anchor may include a bone anchoring portion attached to the bone, and one or more sutures connected to the fixed tissue. The bone anchoring portion may be fixed to t...

Claims

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Application Information

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IPC IPC(8): A61B17/16A61B17/17A61B17/34A61B17/56A61B17/88
CPCA61B17/34A61B17/0401A61B17/1617A61B17/3472A61B2017/0409A61B17/1604A61B2017/00367A61B2017/320056A61B17/3417A61B17/1631A61B17/1615A61B2090/0807
Inventor 埃里克·帕彭富斯
Owner LENKBAR
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