Endoscopic Jaw Assembly Drive Screw Mechanism
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Solution Overview
Problem
Conventional electromechanical surgical devices are expensive to manufacture, purchase, and operate, and there is a need for more economical solutions that offer flexibility in configuration and replaceable parts for minimally invasive surgical procedures.
Innovation Solution
A surgical instrument with a handle assembly, elongated body, and jaw assembly that includes a cartridge with fasteners, an anvil, actuation sled, drive beam, and knife blade, where the drive beam is threadably coupled to a drive screw for longitudinal movement, and a motor is integrated within the handle assembly to facilitate efficient stapling and cutting of tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional electromechanical surgical devices are used, then surgical functions are achieved, but manufacturing and operational costs are high
Solution Approach 1:
The surgical device is divided into separate functional modules: a reusable handle assembly containing the motor and control electronics, and replaceable jaw assemblies containing the stapling and cutting mechanisms. This segmentation allows the expensive electronic components to be reused while only the consumable parts are replaced, reducing overall manufacturing and operational costs while maintaining reliability through standardized interfaces and quality-controlled replacement units.
2Adaptability or versatility
If replaceable parts are implemented, then flexibility in configuration is improved, but device complexity increases
Solution Approach 1:
The handle assembly is designed as a universal platform that can accommodate multiple types of jaw assemblies through standardized coupling mechanisms. The motor, control electronics, and basic actuation mechanisms remain the same across different configurations, while only the jaw assemblies need to be changed to perform different surgical functions (stapling, cutting, or both). This universal design provides configuration flexibility without proportionally increasing overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces manufacturing and operational costs while providing flexibility in configurations and replaceable parts, enhancing the efficiency and cost-effectiveness of minimally invasive surgical procedures.
Implementation Method 1
a drive screw supported within the cartridge assembly, the drive screw having a threaded portion, wherein the drive beam is threadably coupled to the threaded portion of the drive screw such that rotation of the drive screw imparts longitudinal movement of the drive beam
Data Source
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AI summary
The present disclosure is directed to an endoscopic surgical instrument and methods for performing a diverticulum treatment. The surgical instrument includes a handle assembly, an elongated member and a jaw assembly (30). The elongated member is operably coupled to the distal end of the handle assembly, while the jaw assembly is operably coupled to a distal end of the elongated member. The jaw assembly includes: a cartridge assembly (32)including a plurality of fasteners and a longitud inal slot defined therein; an anvil having a fastener forming surface thereon, the cartridge assembly and anvil being mounted for movement with respect to one another between an open position and a closed position in close cooperative alignment for clamping tissue; an actuation sled (140) supported within the cartridge assembly, the actuation sled being movable to urge the plurality of fasteners from the cartridge; a knife blade (174) mounted to the actuation sled; a drive beam (162) including a vertical support (172) strut and a cam member (180) supported on the vertical support strut, the cam member being positioned to translate relative to the anvil to maintain the anvil in the closed position during firing of the fasteners, the vertical support strut being positioned to abut the actuation sled; and a drive screw (160) supported within the cartridge assembly, the drive screw having a threaded portion, wherein the drive beam is threadably coupled to the threaded portion of the drive screw such that rotation of the drive screw imparts longitudinal movement of the drive beam. The jaw assembly is configured to approximate an esophageal tract and a diverticulum.