Percutaneous - Wikipedia, the free encyclopedia
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`Percutaneous
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`From Wikipedia, the free encyclopedia
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`In surgery, a percutaneous procedure [1] is any medical procedure where access to inner organs or
`other tissue is done via needle-puncture of the skin, rather than by using an "open" approach where
`inner organs or tissue are exposed (typically with the use of a scalpel).
`
`The percutaneous approach is commonly used in vascular procedures such as angioplasty and
`stenting. This involves a needle catheter getting access to a blood vessel, followed by the
`introduction of a wire through the lumen (pathway) of the needle. It is over this wire that other
`catheters can be placed into the blood vessel. This technique is known as the modified Seldinger
`technique.
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`More generally, "percutaneous", via its Latin roots means, 'by way of the skin'. An example would
`be percutaneous drug absorption from topical medications. More often, percutaneous is typically
`used in reference to placement of medical devices using a needle stick approach.
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`In general, percutaneous refers to the access modality of a medical procedure, whereby a medical
`device is introduced into a patient's blood vessel via a needle stick. This is commonly known as the
`Seldinger technique named after Sven Ivar Seldinger. The technique involves placing a needle
`through the skin and into a blood vessel, such as an artery or vein, until bleedback is achieved. This
`is followed by introduction of a flexible "introducer guide wire" to define the pathway through the
`skin and into the passageway or "lumen" of the blood vessel. The needle is then exchanged for an
`"introducer sheath" which is a small tube that is advanced over the introducer guide wire and into
`the blood vessel. The introducer guide wire is removed, and exchanged for a catheter or other
`medical device to be used to deliver medication or implantation of a medical implant such as a
`filter or a stent into the blood vessel.
`
`The benefit of a percutaneous access is in the ease of introducing devices into the patient without
`the use of large cut downs, which can be painful and in some cases can bleed out or become
`infected. A percutaneous access requires only a very small hole through the skin, which seals
`easily, and heals very quickly compared to a surgical cut down.
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`Percutaneous access and procedures frequently refer to catheter procedures such as percutaneous
`transluminal angioplasty (PTA) ballooning, stent delivery, filter delivery, cardiac ablation, and
`peripheral or neurovascular catheter procedures but also refers to a device that is implanted in the
`body, such as a heart pump (LVAD), and receives power through a lead that passes through the
`skin to a battery pack outside the body.
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`https://en.wikipedia.org/wiki/Percutaneous
`
`University of Maryland, Baltimore
`IPR2016-00208
`
`Exhibit 2008
`Page 1 of 2
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`Percutaneous - Wikipedia, the free encyclopedia
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`Page 2 of 2
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`See also
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`◾ Interventional radiology
`◾ Angioplasty
`◾ Laparoscopic surgery
`◾ Arthroscopic surgery
`References
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`1. i.e. Granger et al., 2012
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`Retrieved from "https://en.wikipedia.org/w/index.php?title=Percutaneous&oldid=736886188"
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`Categories: Surgery
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`
`https://en.wikipedia.org/wiki/Percutaneous
`
`University of Maryland, Baltimore
`IPR2016-00208
`
`Exhibit 2008
`Page 2 of 2