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Publication Number
US-12279765-B2
Publication Date
2025-04-22
Expiration Date
Abstract
A method for resecting a lesion in a wall of an organ of a patient includes injecting a fluid into the wall of the organ at a location proximate to the lesion, creating a wound in the wall of the organ by cutting the lesion from the wall of the luminal organ, removing at least a portion of the fluid injected into the wall of the organ, and closing the wound using a suture thread. The portion of fluid may be removed prior to or after partially threading the suture thread into the wall of the organ.
Core Innovation
The disclosed approach relates to closing a wound of an organ of a patient after mucosal lesion removal. A liquid solution is injected into a submucosal layer of a wall of the organ beneath a lesion, where the injected liquid solution elevates the lesion away from a muscle layer. The lesion is located in a mucosal layer of the wall of the organ, and the technique is used in connection with creating the wound by incising the submucosal layer to remove the lesion.
After the lesion is completely removed from the wall of the organ, the method further includes removing the injected liquid solution contained within the wall of the organ in the submucosal layer outside of the wound. The wound is created by incising the submucosal layer, and the removal step is performed after complete removal of the lesion or a portion of the mucosal layer. This sequence includes elevation by injection, submucosal incision, and extraction of the injected liquid outside the wound.
In some embodiments, suction extraction is implemented using a hollow needle. The injected liquid solution is removed by inserting a distal end of the hollow needle into the organ wall and suctioning the injected liquid solution out through the hollow needle, including coupling a suctioning device to the proximal end of the hollow needle. Device embodiments also describe a hollow needle with a distal end forceps configured to manipulate a suture thread, and a suturing sequence that threads a suture thread through opposing sides of the wound and retracts to bring wound sides into contact.
Claims Coverage
The document identifies three independent method claims with a common inventive sequence involving injection of a liquid solution into a submucosal layer, incision to create and remove a lesion or mucosal portion, and removal of the injected liquid solution contained in the submucosal layer outside of the wound.
Submucosal liquid injection to elevate mucosal lesion away from muscle layer
Injecting a liquid solution into a submucosal layer of a wall of the organ beneath a lesion so that the injected liquid solution elevates the lesion away from a muscle layer of the wall of the organ, the lesion being located in a mucosal layer of the wall of the organ.
Incising submucosal layer to remove lesion and create wound
Creating the wound in the wall of the organ by incising the submucosal layer to remove the lesion from the wall of the organ.
Removing injected liquid solution from submucosal layer outside of wound after complete lesion removal
Removing the injected liquid solution contained within the wall of the organ in the submucosal layer outside of the wound after completely removing the lesion from the wall of the organ.
Submucosal liquid injection beneath portion of mucosal layer
Injecting a liquid solution into a submucosal layer beneath a portion of a mucosal layer of a wall of an organ of a patient.
Incising submucosal layer to remove mucosal portion and create wound
Incising the submucosal layer to remove the portion of the mucosal layer from the organ, wherein incising the submucosal layer creates a wound in the wall of the organ.
Across the independent claims, the document centers on elevating a mucosal lesion or mucosal portion by injecting a liquid solution into a submucosal layer, creating a wound by incising the submucosal layer to remove the lesion or mucosal portion, and then removing the injected liquid solution contained in the submucosal layer outside the wound after complete removal.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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