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Vertebral body access cannula with enhanced bending stiffness

A technology for intubation and vertebral body kyphosis, which is applied in the direction of catheters, trocars, balloon catheters, etc., and can solve problems such as plastic deformation and cannula rupture

Pending Publication Date: 2019-08-02
MEDTRONIC HLDG CO SARL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional spatula cannulae tend to deform plastically when the balloon is inflated, which can lead to cannula rupture

Method used

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  • Vertebral body access cannula with enhanced bending stiffness
  • Vertebral body access cannula with enhanced bending stiffness
  • Vertebral body access cannula with enhanced bending stiffness

Examples

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[0055] To demonstrate that a spatula cannula including one or more corrugations or ribs (such as rib 54) increases the stiffness of the spatula and provides additional support for the cannula to reduce cannulation compared to a cannula that does not include corrugations or ribs. Due to the amount of plastic deformation experienced by balloon inflation, applicants have tested spatula cannulas without any ribs, with one rib, and with three ribs to determine the The equivalent plastic strain of the tube. Intubation 68 in Figure 17 shown in . Cannula 68 is similar to cannula 22 and includes a shaft 70 similar to shaft 24 and a spoon 72 similar to spoon 38 coupled to shaft 70 . Shaft 70 has the same size and shape as shaft 24 and is made of the same material. The scoop 72 is the same size and shape as the scoop 38 and is made of the same material. Cannula 68 with Figure 1-3 The cannula shown in 22 and Figure 4-6 The illustrated cannula 22 is different in that the cannula 6...

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Abstract

A kyphoplasty cannula includes a shaft extending between opposite first and second end surfaces. The shaft has an inner surface defining a lumen. The shaft has a first opening that extends through thefirst end surface and a second opening that extends through the second end surface. A scoop extends from the second end surface. The scoop has an arcuate inner surface that is continuous with the inner surface of the shaft an opposite outer surface. The scoop has a rib. Kits and methods of use are disclosed.

Description

technical field [0001] The present disclosure relates generally to surgical devices, and more particularly to a spoon ladle cannula with enhanced bending stiffness configured for kyphoplasty. A kit and method of use are disclosed. Background technique [0002] Loss of height is often associated with spinal fractures, such as eg vertebral compression fractures. Spine fractures affect the majority of people with osteoporosis. For example, it is estimated that approximately 700,000 spinal fractures occur each year due to osteoporosis. Surgery has been developed to treat spinal fractures. One such procedure is kyphoplasty. Kyphoplasty is a minimally invasive procedure that is used to treat spinal fractures, such as, for example, vertebral compression fractures by inserting one or more balloons, such as, for example, compliant balloons, within the fractured vertebral body. One or more balloons are inflated within the fractured vertebral body such that the cancellous bone of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70
CPCA61B17/7094A61B17/7061A61B2017/00867A61B17/1642A61B17/7097A61B17/8805A61B17/8858A61B2017/3454A61B17/3421A61B17/8855A61B17/3472A61B17/7074A61L31/022A61M25/10A61B2017/00862A61M2025/1079A61B17/8811A61B17/1757A61B5/6853
Inventor C·德鲁马S·布洛桑H·陈
Owner MEDTRONIC HLDG CO SARL
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