Transabdominal gastric device and method
Inventors
Pattison, Mary • Pattison, Charles Phillip • Lowry, Stephen J. • MOLOS, Mark
Assignees
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Publication Number
US-10219799-B2
Publication Date
2019-03-05
Expiration Date
Abstract
Provided herein are trans-abdominal gastric systems and related methods that are useful in a range of applications for accessing internal regions of a patient. A cannula has internal and external anchors to reliably secure the anchor to an abdominal wall of the patient. An introducer with a capture element facilitates system placement by retrograde introduction. Upon completion, the system is removed and the gastric and abdominal wall incision and defect closed by sutures specially connected to the system that ensures reliable system removal and suture closure in a configuration that is outside the abdominal wall. The systems and methods are particularly suited for use with conventional laparoscopic or endoscopic medical instruments.
Core Innovation
The invention is a trans-abdominal gastric surgical system that includes a cannula with an outer end, an inner end, and a central portion defining a lumen configured to receive a portion of a medical instrument traversing between the outer end and the inner end. The system further includes an internal anchor connected to the inner end with a surface shape configured to secure the system against an interior surface of a gastric wall or a peritoneal surface, providing interior fixation for the cannula during trans-abdominal gastric access.
The system also includes an external anchor that is removably and translationally connected to the cannula outer-facing surface, with a surface shape configured to secure the system against a skin surface. A cap removably connected to the cannula outer end provides controlled access, and the cap includes a stopcock connected to the cap for providing controlled access to the cannula lumen, supporting access to gastric and peritoneal spaces through the cannula and instrument access provided by the cap.
In an external anchor removed configuration, the system further comprises an introducer removably connected to the cannula outer end. The introducer includes a receiving opening that removably receives the cannula outer end and at least a portion of the cannula central portion, a tapered central portion extending between a distal end and a proximal end, and a capture element connected to the distal end, and is configured for retrograde introduction past a patient's oropharynx by pulling a guidewire connected to the capture element in a direction away from a patient surface.
The disclosed system supports system removal and closure using the external anchor passages and sutures through passages so that anchors and incision closure occur outside the abdominal wall, including removal that pulls the internal anchor through the stomach and abdominal wall while matched proximal and distal suture ends are revealed. The described cannula-and-anchoring structure supports staged interior anchoring, incision closure, and subsequent suture placement to close an abdominal and stomach wall defect.
Claims Coverage
The partial content provides two independent claims. Across these claims, the inventive coverage is centered on a trans-abdominal cannula with internal and external anchors plus a cap and stopcock for controlled lumen access, and a retrograde introducer with a tapered central portion and capture element that is advanced by pulling a guidewire past a patient's oropharynx, including external-anchor-removed configuration aspects.
Anchored trans-abdominal cannula with internal and external anchors
A cannula having an outer end, an inner end, and a central portion defining a lumen configured to receive a portion of a medical instrument traversing between the outer end and the inner end; an internal anchor connected to the inner end having a surface shape configured to secure the system against an interior surface of a gastric wall or peritoneal surface; and an external anchor removably and translationally connected to the cannula outer-facing surface having a surface shape configured to secure the system against a skin surface.
Cap with stopcock for controlled access to the cannula lumen
A cap removably connected to the cannula outer end and a stopcock connected to the cap for providing controlled access to the cannula lumen.
Retrograde introducer for placing the cannula via guidewire past the oropharynx
In an external anchor removed configuration, an introducer removably connected to the cannula outer end where the introducer comprises a receiving opening that removably receives the cannula outer end and at least a portion of the cannula central portion; a distal end and a proximal end through which the receiving opening traverses; a tapered central portion extending between the distal end and the proximal end; and a capture element connected to the distal end, with the tapered central portion configured for introducing the system to a patient by retrograde introduction past a patient's oropharynx by pulling a guidewire connected to the capture element in a direction away from a patient surface.
The independent claim coverage focuses on a trans-abdominal gastric cannula secured by an internal anchor against an interior gastric/peritoneal surface and an external removably translational anchor against skin, with a cap and stopcock to provide controlled access to the cannula lumen. The second independent claim adds an external-anchor-removed configuration and an introducer having a tapered central portion and capture element, configured for retrograde introduction past the oropharynx by pulling a guidewire to enable placement of the assembly.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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