Radially expandable cannula system

A cannula device, axially grounded technology, applied in the field of radially expandable cannula system, capable of solving problems such as nerve injury

Pending Publication Date: 2020-06-16
XPAN INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, insertion of large diameter ports into delic...

Method used

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  • Radially expandable cannula system
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  • Radially expandable cannula system

Examples

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Embodiment Construction

[0238] In an example embodiment, an enlargement of the diameter of the port size via an expandable cannula device is provided.

[0239] refer to Figure 1 to Figure 9 , in an example embodiment, a cannula device 100 is shown. In an example embodiment, an instance of cannula device 100 may be implemented in a trocar.

[0240] see figure 1 , the cannula device 100 has a head or first ring 101 that can be detachably attached to the rest of the cannula 100; and a plurality of radially expanding rigid members 106, the The plurality of radially expanded rigid members 106 form a substantially circular inner diameter shape, eg, when in an unexpanded state. In some examples, rigid member 106 is coated with a polymeric material that reduces friction between rigid member 106 and an instrument inserted through the lumen of cannula device 100 . In some examples, the coating is made of parylene.

[0241] The initial unexpanded inner diameter formed by the elongated rigid member 106 may...

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PUM

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Abstract

A radially expandable trocar, port or cannula system is provided for use in minimally invasive surgeries. The cannula creates a port access with an initial small internal diameter. The passage of thecannula devices is defined by a plurality of elongate rigid members. A number of mechanisms are provided for expanding the passage of the cannula devices, by moving the plurality of elongate rigid members towards a larger radial location, thereby creating a larger internal diameter for the port. The elongate rigid members can be prevented from unintended movement when the system is at the un-expanded state, during expansion and when it is expanded to the desired larger diameter. Example embodiments include methods of preventing gas loss from the tissue that would occur through the gaps createdduring expansion.

Description

[0001] cross reference [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 554,802, filed September 6, 2017, entitled RADIALLY EXPANDABLE CANNULA SYSTEM, and Canadian Patent Application No. 2993590, filed January 31, 2018, entitled RADIALLY EXPANDABLE CANNULA SYSTEM The entire content of said patent application is hereby incorporated by reference into the following detailed description. technical field [0003] The technical field relates generally to methods and devices for use in minimally invasive surgery or keyhole surgery. For example, the technical field relates to cannula devices and trocar devices for insertion into an incision. Background technique [0004] In minimally invasive surgery, small incisions are made. A cannula or port device (called a trocar) is then inserted through the incision to create a passage through which a surgical device can be passed to perform the minimally invasive procedure. It is the surgeon's goal t...

Claims

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Application Information

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IPC IPC(8): A61B17/34A61M39/02
CPCA61B17/3439A61B17/3462A61M39/02A61B2017/3484A61B17/3423A61B17/3498A61B2017/3486
Inventor Z·阿托S·西塞克C·迪尔伯特C·M·坎贝尔A·拉达克
Owner XPAN INC
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