Surgical instrument with improved lock mechanism
A technology of surgical instruments and locking mechanism, applied in the fields of surgery, surgical forceps, medical science, etc., can solve the problems of increasing the operation time, the risk of surgery, and increasing the pain of patients.
Pending Publication Date: 2018-07-03
5R MED TECH CHENGDU CO LTD
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Problems solved by technology
Even so, it can only partially meet the realization requirements of the surgeon, but it does increase the pain of the patient, increase the operation time and the resulting various operation risks.
Method used
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[0040] Embodiments of the present invention are disclosed herein, however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be practiced in various ways. Therefore, this disclosure is not to be interpreted as limiting, but merely as a basis for the claims and as a basis for teaching one skilled in the art how to use the invention.
[0041] refer to Figure 1-4 , for the convenience of expression, the side close to the operator is defined as the proximal end, and the side far away from the operator is defined as the far end.
[0042] Such as Figure 1-3 As shown, in conjunction with the aforementioned background, during surgical operations, especially laparoscopic surgery, when the cannula assembly (not shown) is inserted into place, various minimally invasive surgical instruments, such as the surgical hand instrument 10, can pass through the sleeve The channel formed by the tube assembly is inserted into the body cavity. I...
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The invention discloses a surgical instrument with an improved lock mechanism. The surgical instrument comprises a far-end working head part, a near-end handle and a lengthening bar part, wherein thelengthening bar part extends between the far-end working head part and the near-end handle; the handle comprises a front handle, a rear handle and a handle rotating shaft, the front handle and the rear handle are connected through the handle rotating shaft and can rotate relative to the handle rotating shaft; the working head part comprises a pair of tong heads and a driving mechanism connected with the tong heads; the lengthening bar part comprises a rotating wheel, an external bar part and an inner drawing bar, the outer bar part and the rotating wheel are fixed together and are mounted in the front handle, one end of the inner drawing bar is connected with the driving mechanism, and the other end of the inner drawing bar is connected with the rear handle; the lock mechanism comprises acantilever integrally connected with the rear handle, and the cantilever comprises a plurality of first locking teeth; a lock bolt comprises second locking teeth matched with the locking teeth; a trigger comprises a trigger rotating shaft, a first convex wheel surface, a second convex wheel surface and a finger buckle; and the locking mechanism has a valid mode and an invalid mode.
Description
technical field [0001] The invention relates to a minimally invasive surgical instrument, in particular to a surgical instrument with an improved lock mechanism. Background technique [0002] Surgical instruments have a history of hundreds of years. During surgery, doctors use different surgical instruments to complete operations such as tissue grasping, cutting, separation, coagulation, and suture closure. Surgical instruments have matured after hundreds of years of development. Laparoscopic surgery has been clinically carried out for more than 30 years and is making rapid progress. Simply put, laparoscopic surgery means that the surgeon uses an extended laparoscopic hand-held instrument to enter the patient's body through the natural orifice or a constructed puncture channel, and completes operations such as tissue grasping, cutting, separation, coagulation, and suture closure. [0003] Compared with traditional open shell surgery, laparoscopic surgery has the main advant...
Claims
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IPC IPC(8): A61B17/29A61B17/00
CPCA61B17/00234A61B17/2909A61B2017/2912A61B2017/2925A61B2017/2946
Inventor 朱莫恕
Owner 5R MED TECH CHENGDU CO LTD