Apparatus and method for driving a hemorrhage occluder pin into a human sacrum
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Publication Number
US-8388651-B2
Publication Date
2013-03-05
Expiration Date
Abstract
A method and apparatus to terminate sacral hemorrhaging in a patient having a sacrum and a pubic bone is disclosed. A C-shaped driver is positioned around the pubic bone of the patient and a hemorrhage occluder pin is driven into the sacrum of the patient by applying an impact force to a proximal end of the C-shaped driver. The driver may include a C-shaped shaft that defines a radius in the range 50 mm to 200 mm and a maximum span in the range 100 mm to 650 mm. The proximal end of the C-shaped shaft may have a blunt face with a breadth that is at least 2.5 times the diameter of the pin cap. A shaft distal end has a driver face facing away from an interior of the C-shape, and defining a driver face diameter that is preferably no less than 50% of the pin cap diameter.
Core Innovation
An apparatus and method are disclosed for terminating sacral/presacral venous plexus bleeding in colorectal surgery by driving a hemorrhage occluder pin having a pin cap into a human sacrum. The approach includes a C-shaped driver placed around the pubic bone adjacent a pin cap, with impact applied at a proximal end to drive the pin into the sacrum.
The driver is defined by a C-shaped shaft having a C-shape radius in the range 50 mm to 200 mm and a maximum span in the range 100 mm to 650 mm. A proximal end includes a blunt face for receiving an impact force, where the blunt face breadth is at least 2.5 times the pin cap diameter, and a distal end includes a driver face for contacting and driving the pin cap, where the driver face diameter is no less than 50% of the pin cap diameter.
The blunt face and driver face are oriented to face away from an interior of the C-shape. The distal driver face may be concave with a concavity radius and a concave recession depth, may optionally be magnetized, and may include an annular flat surface and a rounded outer edge to improve stability, control, and reduce tissue damage. The pin cap geometry is also described as having convexity and an optional central flat spot.
Claims Coverage
The independent claim covers a driver for driving a hemorrhage occluder pin into a human sacrum, with three inventive features centered on the C-shaped shaft geometry and the proximal and distal faces, which are dimensioned relative to the pin cap diameter.
C-shaped driver shaft with defined radius and span
A C-shaped shaft having a C-shape defining a radius in the range 50 mm to 200 mm, and defining a maximum span in the range 100 mm to 650 mm.
Proximal blunt face dimensioned relative to pin cap diameter
A proximal end having a blunt face for receiving an impact force, the blunt face having a breadth that is at least 2.5 times the pin cap diameter; and the blunt face being oriented to face away from an interior of the C-shape.
Distal driver face dimensioned relative to pin cap diameter and oriented away from the C-shape interior
A shaft distal end having a driver face for contacting and driving the pin cap, the driver face defining a driver face diameter that is no less than 50% of the pin cap diameter, wherein the driver face is oriented to face away from an interior of the C-shape.
The claim coverage centers on a C-shaped driver whose proximal blunt face and distal driver face are both oriented away from the interior of the C-shape and whose key dimensions are constrained relative to the pin cap diameter.
Stated Advantages
Improves stability and control.
Reduces tissue damage.
Documented Applications
Terminating sacral/presacral venous plexus bleeding in colorectal surgery by driving a hemorrhage occluder pin into a human sacrum.
Applying the driver to address sacral/presacral venous plexus bleeding.
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