Compact endoscopic surgical blade assembly and method of use thereof
Inventors
Assignees
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Publication Number
US-10548624-B2
Publication Date
2020-02-04
Expiration Date
Abstract
An endoscopic surgical device having a slotted clear cannula, a blade and a housing, wherein the cannula is attached to the housing, and wherein the blade is enclosed in the housing and is slidable into the cannula is disclosed. The blade is enclosed within the housing and cannula, and has a horizontally-oriented pushing component and a vertically-oriented cutting component that protrudes through the slot of the cannula. The device further has a device for locking a viewing device in place relative to other components of the device. A method for a performing an operative procedure on a target tissue in a subject using the endoscopic surgical device is also described.
Core Innovation
The invention provides a compact uniportal endoscopic surgical device that includes a blade, a housing, and a slotted clear cannula attached to a distal end of the housing. The slotted cannula comprises a cannula body having a proximate end and a distal end, and the cannula supports visualization via an endoscope through a central lumen. The cannula includes a slot that allows deployment of a tool while maintaining a compact uniportal configuration.
The device further includes an internal tool selector assembly extending proximally from the blade. A horizontal blade guidance track is provided, and the assembly slidably engages with the horizontal blade guidance track. The assembly includes a notch in which the blade resides in a pre-deployment position, and a selector switch enables engagement selection of the blade for deployment through the cannula slot.
The disclosed embodiments include a rotatable tool-selection mechanism and a scope-lock assembly configured to immobilize the viewing device relative to a tube assembly used to advance and retract tools. The slotted cannula is described as having a closed distal end, optionally sharpened or tapered, for elevator- and obturator-free tissue entry and separation.
The device is described as eliminating separate obturator insertion and endoscope removal steps during tool deployment within uniportal endoscopic procedures.
Claims Coverage
The document describes one independent claim covering an endoscopic surgical device with a blade, a housing, a slotted cannula having a horizontal blade guidance track, a slidably engaging assembly with a notch holding the blade in a pre-deployment position, and a selector switch that allows engagement selection for blade deployment. Dependent claims refine the slotted cannula distal end geometry, include additional kit components, and narrow associated uniportal endoscopic use cases to specified target tissues and procedure types.
Selector switch-controlled blade deployment with slotted cannula and horizontal blade guidance track
A blade; a housing with a selector switch and proximate and distal ends; a slotted cannula attached to the distal end of the housing, the slotted cannula comprising a cannula body with a proximate end and a distal end; an assembly extending proximally from the blade; wherein the slotted cannula further comprises a horizontal blade guidance track; wherein the assembly slidably engages with the horizontal blade guidance track; wherein the assembly comprises a notch; wherein the blade resides at the notch of the assembly in a pre-deployment position; and wherein the selector switch allows engagement selection of said blade for deployment.
Elevator-shaped closed distal end of a slotted cannula
A slotted cannula wherein the distal end comprises a closed end shaped to function as an elevator.
Cylindrical selector switch for engagement selection
A cylindrical body comprising a selector switch in a device that includes the blade, housing, slotted cannula, and an assembly with a horizontal blade guidance track and notch holding the blade in a pre-deployment position.
Slotted cannula distal end angle constraint
A slotted cannula wherein the distal end forms an angle with the cannula body within 165 to 145 degrees.
Endoscope included in the endoscopic surgical kit
An endoscopic surgical kit that includes an endoscope.
Overall, the claim set focuses on blade deployment controlled by a selector switch in conjunction with a slotted cannula and a horizontal blade guidance track, using a notch-defined pre-deployment position; dependent claims further constrain distal cannula geometry and narrow kit contents and uniportal procedure targets such as fascia release and specified tissues.
Stated Advantages
Aims to eliminate separate obturator insertion and endoscope removal steps during tool deployment in uniportal endoscopic procedures.
Documented Applications
Uniportal endoscopic surgical procedures including carpal tunnel release, trigger finger release, cubital tunnel release, fascia releases, and blood vessel harvesting.
Target tissue use cases explicitly described include Al pulley, carpal transverse ligament, cubital tunnel fascia, Guyon’s canal, fascia, and blood vessel.
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