Endosurgical device and method of use
Inventors
Axelsson, Robert • BRAKHYA, Ronny • Vagerstam, Henrik • Melle Hannah, Miden
Assignees
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Publication Number
US-12433666-B2
Publication Date
2025-10-07
Expiration Date
Abstract
A method for treating or diagnosing cancer with and endosurgical device comprising at least two lengthwise extending channels (2, 3, 4, 5; 2′, 3′, 4′, 5′), two opposite jaws (9, 10; 9′, 10′; 9″, 10″) with use of diathermy and flushing a tissue specimen to a proximal end of the endosurgical device. The method allows the surgeon to take several tissue specimens from an organ and to perform several functionalities when the device is inside the organ. The endosurgical device for use in the method is also disclosed.
Core Innovation
The patent describes a surgical method and an endosurgical device for diagnosing or treating cancer of a human by taking tissue specimens from an area suspected of cancer without another cutting feature. An endosurgical device is inserted into the human and a distal end is brought to the area suspected of cancer. A pair of jaws is closed by displacing an end effector inside an effector sleeve, enclosing a tissue specimen and defining a biopsy cup inside the pair of jaws.
Diathermy is activated by providing current via an electrical cord to the pair of jaws to sever the tissue specimen and set it free so that the freed tissue specimen is protected inside the biopsy cup. The tissue specimen is then flushed out of the biopsy cup with a fluid and collected at a proximal end that is fluidly connected to the distal end of the endosurgical device. The severing of the tissue specimen by diathermy is performed without another cutting feature.
The patent further enables repeated specimen taking by repeating the positioning, jaw closure, diathermy severing, flushing, and proximal collection steps without removing the endosurgical device out of the human between taking each tissue sample. Dependent aspects specify that the biopsy cup is closed in a substantially leak-proof manner and that the exterior faces of the pair of jaws are electrically insulated by a coating. Further dependent aspects specify collecting the tissue specimen in a formalin-containing vial.
Claims Coverage
The patent provides two independent claims covering a cancer diagnosis/treatment surgical method that severes a tissue specimen by diathermy without another cutting feature, flushes the specimen out of a biopsy cup, collects it proximally, and in one claim repeats sampling without removing the device. Across the dependent claims noted in the partial content, inventive features include leak-proof biopsy-cup closure, electrically insulated jaw exterior faces, formalin-containing vial collection, and specific flushing pressure thresholds.
Diathermy severing without another cutting feature with proximal flushing collection
Severing the tissue specimen by diathermy is performed without another cutting feature, and the severed tissue specimen is flushed out of the biopsy cup and collected at a proximal end fluidly connected to the distal end of the endosurgical device.
Biopsy cup defined by closed jaws via effector-sleeve displacement
Closing a pair of jaws by displacing an end effector inside an effector sleeve to enclose a tissue specimen and defining a biopsy cup inside the pair of jaws.
Multiple tissue specimens by repeating steps without device removal
Taking multiple tissue specimens from the area suspected of cancer by repeating steps b)-f) and without removing the endosurgical device out of the human between the taking of each tissue sample.
Substantially leak-proof biopsy cup closure
When closing the pair of jaws, the jaws are held tightly together to close a biopsy cup around a tissue specimen in a substantially leak-proof manner.
Electrically insulated jaw exterior faces by coating
A pair of jaws whose exterior faces are electrically insulated by a coating.
Proximal specimen collection in a formalin-containing vial
Collecting the tissue specimen at a proximal tube end in a formalin-containing vial.
Overall claim coverage centers on forming a biopsy cup by closing insulated jaws, severing a tissue specimen by diathermy without another cutting feature, flushing the specimen out of the biopsy cup, and collecting it proximally. One independent claim additionally requires repeating the sampling sequence without removing the endosurgical device, and dependent features further constrain leak-proof closure, jaw electrical insulation, and formalin-containing vial collection.
Stated Advantages
Enables severing the tissue specimen by diathermy without another cutting feature.
Allows flushing the tissue specimen out of the biopsy cup and collecting the tissue specimen at a proximal end fluidly connected to the distal end of the endosurgical device.
Allows taking multiple tissue specimens from the area suspected of cancer by repeating steps b)-f without removing the endosurgical device out of the human between samples.
Supports substantially leak-proof closure of the biopsy cup during jaw closure.
Provides electrically insulated exterior jaw faces via a coating.
Collects specimens in a formalin-containing vial at the proximal end.
Documented Applications
Outpatient biopsy of a urinary bladder cancer using an endosurgical device for obtaining tissue specimens.
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