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Stamped Tube Pull for Medical Device Control Linkages Disclosure Number: IPCOM000249226D
Publication Date: 2017-Feb-10
Document File: 3 page(s) / 168K

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Laparoscopic and robotic surgeries are commonly performed in developed countries as opposed to open surgery due to the improved outcomes for the patient in terms of postā€operative pain, recovery time, risk of infection, and topical scars. These surgeries dictate the insertion of instruments into the patient through trocars. The open lumen through the trocar by which a device may be inserted ranges from 5 mm to 12 mm, with smaller trocars being preferred by patients and many surgeons. Medical devices to perform these surgeries are becoming more feature rich allowing the surgeon to better access to manipulate and treat tissue with a single instrument. Examples of these features include shaft rotation, shaft articulation, clamping, cutting, and coagulation.

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Stamped Tube Pull for Medical Device Control Linkages 



Laparoscopic and robotic surgeries are commonly performed in developed countries as opposed to open  surgery due to the improved outcomes for the patient in terms of post‐operative pain, recovery time,  risk of infection, and topical scars. These surgeries dictate the insertion of instruments into the patient  through trocars. The open lumen through the trocar by which a device may be inserted ranges from 5  mm to 12 mm, with smaller trocars being preferred by patients and many surgeons. Medical devices to  perform these surgeries are becoming more feature rich allowing the surgeon to better access to  manipulate and treat tissue with a single instrument. Examples of these features include shaft rotation,  shaft articulation, clamping, cutting, and coagulation. 

While devices are becoming more capable and complex, economic and regulatory pressures are forcing  the cost of surgery to be reduced. These cost pressures trickle down to the devices and consumables  used to perform surgery. Cost effective solutions are required in the design of medical devices. Research  has shown surgeons greatly prefer independent controls for each feature or function performed by a  device. Multifunction devices with independent controls for each function necessitate a plurality of  control rods passing through the instrument shaft, which is ultimately inserted into the trocar. The  preference toward smaller trocars dictate the control rods be small in diameter. A cost effective solution  is needed to connect the control rods passing through the device shaft to mechanical or  electromechanical mechanisms in the device handle or robotic arm. 



The control rods passing through the device shaft to the end effector are typically small, allowing a  plurality of control rods, such that mul...