Handheld instrument for laparoscopic operation

Abstract

The invention discloses a handheld instrument for laparoscopic operation, and relates to the field of thoracic and abdominal cavity minimally invasive surgical medical equipment. The instrument includes an execution part and an adjustment part; the execution part includes clamping jaws connected with a pull rod through a No.1 slide block and a No.2 slide block, a clamp seat is connected with a rotatable screw sleeve, the screw sleeve is in screw connection with a deflection joint, the deflection joint is in clamp connection with a long tube through a guide groove, the long tube is connected with the adjustment part, and the adjustment part includes a handle mechanism; the pull rod passes through the clamp seat, the screw sleeve, the deflection joint and the long tube to be clamped into a handle groove of the handle mechanism; the front end of the handle mechanism is arranged in a shift wheel in a pass-through manner, and the shift wheel and a rotating sleeve are respectively axially fixed to two ends of a guide rail; the guide rail is provided with a guide rail groove, and a No.3 slide block and a No.4 slide block separately matched with inner ball grooves of the shift wheel and the rotating sleeve are arranged in the guide rail groove; and the No.3 slide block and the No.4 slide block are respectively connected with one steel wire rope, and the tail ends of the two steel wireropes are respectively connected with two sides of the deflection joint. The handheld instrument for the laparoscopic operation provided by the invention can realize small-radius deflection while realizing clamping, and is convenient for doctors to operate.

Description

technical field [0001] The invention relates to the technical field of medical equipment for minimally invasive surgery in the thoracoabdominal cavity, in particular to a hand-held abdominal surgery instrument. Background technique [0002] Surgical instruments are medical instruments used in clinical operations that can provide the attending doctor with surgical actions. In different surgical projects, the functions and functions of surgical instruments are completely different. For minimally invasive surgery, its surgical instruments are essentially multifunctional, precise in structure, high in efficiency, and flexible in operation. Its purpose is to realize the clamping, cutting, dragging, extracting, suturing and other actions of the doctor during the operation, and can complete complex surgical actions in the smallest space. At present, the ends of hand-held surgical instruments can be divided into two types: single-degree-of-freedom and multi-degree-of-freedom. Altho...

AI Technical Summary

Problems solved by technology

At present, the ends of hand-held surgical instruments can be divided into two types: single-degree-of-freedom and multi-degree-of-freedom. Although single-degree-of-freedom surgical instruments are simple in structure and small in size, they are not flexible enough to meet the operating needs of doctors during surgery; Multi-degree-of-freedom surgical instruments can realize the flexible movement of the end of the surgical instrument, but the current multi-degree-of-freedom surgical instruments have many disadvantages: (1) The structure of the surgical instrument is complex and large, and it is not easy to disassemble, clean and replace; (2) The surgical instrument There is a coupling phenomenon between the degrees of freedom, and it takes a long time to debug before the operation; (3) the wrist joint at the end of the surgical instrument is far from the front end, so that the radius of motion is too large when the deflection causes the doctor to lose the surgical field of view; (4) for the wire rope Surgical instruments that control joints, lack of wire rope tensioning devices, etc.

[0003] Patent No. 201610312920.6, publication number CN 105943095 A, and invention patent published on September 21, 2016 discloses a "Minimally Invasive Surgical Instrument with Flexible Wrist". The surgical instrument described in this patent has The flexible wrist joint makes the surgical instrument more flexible, but its end has a large bending radius and is inconvenient to operate

The patent number is 201710124631.8, the publication number is CN 107007308 A, and the invention patent published on August 4, 2017 discloses a "Medical Surgical Instrument". This structure is convenient for clamping and pulling tissues, and the operation is simple and convenient, but the flexibility is poor No yawing degree of freedom Operating space is limited

The invention patent with patent number 201711252653.9, publication number CN 108013906 A, and publication date is May 11, 2018 discloses a "serpentine surgical instrument". High reliability, but the surgical instrument is not easy to manipulate, and the deflection radius is large

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