Novel surgical instrument with multiple sections being bendable after adjusting

Abstract

The invention relates to a novel surgical instrument with multiple sections being bendable after adjusting. The novel surgical instrument comprises a functional instrument component, an instrument shaft and a control handle, wherein the instrument shaft comprises an outer pipe, a functional instrument control piece, a bending adjusting controlling wire and a bending angle regulating unit; the control handle further comprises a bending adjusting operating piece; the near end of the bending angle regulating unit or the near end of the outer pipe is fixedly connected with the bending adjusting operating piece; the bending angle regulating unit is provided with one or more fixing bending angle sections; parts adjacent to the fixing bending angle sections are straight sections; the outer pipe is provided with one or more bendable sections; parts adjacent to the bendable sections are rigid straight sections; when the bending adjusting operating piece is operated, the outer pipe and the bending angle regulating unit take relative displacement; when the fixing bending angle sections enter the bendable sections, the bendable sections are driven to be changed in angles; when the fixing bending angle sections enter the rigid straight sections, the bendable sections are driven to be straightened. The novel surgical instrument with multiple sections being bendable after adjusting is simple and reasonable in structure and can be bent at multiple sections, straight insertion and extraction are realized, mutual collision and interference among instruments can be reduced, and the operation is convenient.

Description

technical field [0001] The present invention relates to a surgical instrument, in particular to a multi-segment adjustable bendable surgical instrument for minimally invasive surgery (such as laparoscopic surgery) or other forms of surgery. Background technique [0002] Minimally invasive surgery is the most cutting-edge development direction of medical science and technology today. Minimally invasive surgery represented by laparoscopic surgery has gradually replaced traditional laparotomy. After more than 20 years of development, the technique of laparoscopic minimally invasive surgery has gradually matured. Because of its small surgical trauma, mild postoperative pain, short hospital stay, and good cosmetic effect, it has been widely used and satisfied in clinical practice. Effect. Conventional laparoscopic surgery is done through multiple (3-5) tiny (5-12mm) incisions. With the enrichment of clinical experience and the advancement of engineering technology, a new concept...

AI Technical Summary

Problems solved by technology

Pre-bent rigid laparoscopic surgical instruments use the method of bending the instrument shaft into a specific shape to expand the surgical field of view and operating range, but because the instrument shaft or the instrument head is at a fixed angle and the angle cannot be adjusted, the surgical operation range has certain limitations and the instrument cannot go straight in and out, which adds certain difficulties to the operation process. For example, the Chinese patent with the patent number 201120344651.4 and the patent name "pre-bent rigid single-hole laparoscopic instrument" discloses that the shape of the instrument shaft is curved It is the front section, the middle section, the back section and the connecting section between each section. The front section and the back section of the instrument shaft are on the same straight line, and the middle section is on another straight line. The two straight lines intersect to form an angle. The handle is locked on the instrument shaft and cannot be rotated. , there is a handle on the handle that can provide torsion torque. Although this instrument can reduce the cross-interference of instruments to a certain extent, because the angle of the instrument is not adjustable and cannot be rotated, the range of operation is very limited, and the instrument cannot Straight in and out, increasing the difficulty of operation

For another example, the Chinese patent No. 201210267592.4 and the patent name "Multi-plane Pre-bent Rigid Laparoscopic Surgical Instrument" discloses a surgical instrument whose instrument shaft has at least two curved sections, and different curved sections are located on different curved surfaces, but Because the angle of the instrument is not adjustable, and the instrument cannot be rotated, the scope of surgical operation is limited, and the instrument cannot go straight in and out, which increases the difficulty of surgical operation

Existing bendable single-hole laparoscopic surgical instruments have complex structures, are easily damaged, and are expensive to manufacture. For example, the US patent No. US8747302B2 discloses a multi-section adjustable bending surgical instrument, and each section of the instrument needs a knob to adjust the bending. Control operation, more knobs, more complicated structure, not easy to operate

For another example, the US patent No. US2011 / 0144659A1 discloses a multi-segment adjustable bending surgical instrument, but the structure of the instrument is more complicated, the price is expensive, and it is not suitable for general use.

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