Endosurgical device and method of use
Inventors
Axelsson, Robert • BRAKHYA, Ronny • Vagerstam, Henrik • Melle Hannah, Miden
Assignees
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Publication Number
US-11547470-B2
Publication Date
2023-01-10
Expiration Date
Abstract
An endosurgical device is provided. The endosurgical device comprises a flexible tube having at least two lengthwise extending channels, an end effector comprising two opposite jaws having opposite cutting edges, an effector sleeve that surrounds the tube at least at the distal tube end, and means for reciprocating the end effector axially in relation to the effector sleeve to close the jaws when the effector sleeve is moved forward and backwards to close and open the jaws, respectively. The exterior face of the opposite jaws is electrically insulated, and an electrical cord for providing current to the end effector extends inside one of the lengthwise extending channels of the tube. The endosurgical device may allow the surgeon to take several tissue specimens from an organ and to perform several functionalities when the device is inside the organ.
Core Innovation
The invention relates to an endosurgical device including a flexible tube having a distal tube end, a proximal tube end, and at least two lengthwise extending channels, together with a distal end effector comprising two opposite jaws with opposite cutting edges. The end effector is provided at the distal tube end and is coupled to an effector sleeve that surrounds the flexible tube at least at the distal tube end. The end effector is reciprocated axially in relation to the effector sleeve, or vice versa, to open and close the jaws.
The end effector comprises a main tubular body having a first end connected to the distal tube end to provide fluid communication to the at least two lengthwise extending channels and an opposite second end having the opposite jaws. At least one jaw diverges from a longitudinal axis of the end effector in a relaxed condition when the end effector is at least partly outside the effector sleeve, while the jaws are compressed by the effector sleeve to keep the gap between the jaws closed when the end effector is at least partly inside the effector sleeve. In this closed condition the jaws define a closed biopsy cup, and the exterior faces of the opposite jaws are electrically insulated.
An electrical cord for providing current to the end effector extends inside one of the lengthwise extending channels, and the tube has a third lengthwise extending channel for transferring a tissue specimen out of the closed biopsy cup by flushing with a fluid. One jaw includes a wall having an opening configured to expose a needle or a nozzle for application of a local anesthetic at a target site when the biopsy cup is closed. The needle or nozzle is reciprocatingly arranged inside a fourth channel of the tube to allow retraction into the opening to sealingly close the opening, optionally with a tubular guide member to control axial movement of the needle.
Claims Coverage
The document provides two independent claims (clm-00001 and clm-00005). Across both independent claims, the core inventive coverage includes four main inventive features: a reciprocating end effector with an effector sleeve forming a closed biopsy cup, electrically insulated exterior jaw faces with an electrical cord routed inside a lengthwise channel for providing current, a multi-channel flexible tube with a flush-transfer channel for transferring a tissue specimen, and a jaw wall opening that exposes a reciprocating needle/nozzle for local anesthetic delivery while sealingly closing when the biopsy cup is closed.
Reciprocating end effector with effector sleeve to form a closed biopsy cup
An end effector comprising two opposite jaws having opposite cutting edges is provided at a distal tube end, and an effector sleeve surrounds the flexible tube at least at the distal tube end, with means for reciprocating the end effector axially in relation to the effector sleeve, or vice versa, to open and close the jaws, wherein at least one jaw diverges from a longitudinal axis in a relaxed condition when the end effector is at least partly outside the effector sleeve and the effector sleeve subjects the jaws to a compression force to keep the gap between the jaws closed to define a closed biopsy cup when the end effector is at least partly inside the effector sleeve.
Electrically insulated exterior jaw faces with electrical cord routed in a lengthwise channel
The exterior faces of the opposite jaws are electrically insulated, and an electrical cord for providing current to the end effector extends inside one of the lengthwise extending channels.
Multi-channel tube including a tissue specimen transfer by flushing
The flexible tube includes a third lengthwise extending channel for transferring a tissue specimen out of the closed biopsy cup by flushing with a fluid, and the end effector includes a main tubular body connected to the distal tube end to provide fluid communication to the at least two lengthwise extending channels.
Jaw wall opening for a reciprocating needle or nozzle to deliver local anesthetic while sealingly closing
One jaw has a wall with an opening configured to expose a needle or a nozzle for application of a local anesthetic at a target site when the biopsy cup is closed, wherein the needle or nozzle is reciprocatingly arranged inside a fourth channel of the tube to allow the needle or nozzle to be retracted into the opening to sealingly close the opening in the jaw wall, optionally with a tubular guide member protruding from the opening inside the closed biopsy cup.
Overall, the independent claims cover an endosurgical device combining axial reciprocation of a distal end effector relative to an effector sleeve to create a closed biopsy cup, electrically insulated exterior jaw faces with an electrical cord routed through a lengthwise channel, a multi-channel flexible tube with a tissue specimen transfer channel using flushing, and a jaw wall opening that exposes a reciprocating needle/nozzle for local anesthetic delivery while retracting to sealingly close the opening.
Stated Advantages
Improved outpatient bladder biopsy with better specimen integrity and less trauma.
Reduced steps and costs.
Documented Applications
Outpatient bladder biopsy, including biopsy with tissue specimen handling and local anesthetic application at a target site.
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