阅读说明：本技术 可视微切口撑开器 (Visual micro-incision spreader ) 是由 单国华 刘炜烽 胡继燕 单烁 汤昕宇 于 2020-03-27 设计创作，主要内容包括：本发明提供了一种可视微切口撑开器,包括由转轴铰接连接两钳臂,钳臂后端有便于握持的手柄,两钳臂之间还设置有限定两者之间开度的锁定单元,钳臂的前端有向远离钳臂所在面呈垂直向延伸的牵引杆,两钳臂的铰接转轴上还滑动式连接有导杆,导杆前端有拔引杆,两钳臂前端开口大小变化时,拔引杆与所述的牵引杆相互聚集或彼此分离并处在整体呈三角形的各角位置处。由此可知,拔引杆与所述的牵引杆相互聚集时各杆所占空间区域很小,完全满足微创切口的初始状态下的插入,拔引杆与牵引杆相互分离时,将微创切口的初始孔口牵引扩充,满足实施手术要求的扩展空间。(The invention provides a visual micro-incision spreader, which comprises two clamp arms hinged by a rotating shaft, wherein the rear ends of the clamp arms are provided with handles convenient to hold, a locking unit for limiting the opening degree between the two clamp arms is also arranged between the two clamp arms, the front ends of the clamp arms are provided with draw bars which are far away from the surfaces of the clamp arms and extend vertically, the hinged rotating shafts of the two clamp arms are also connected with guide rods in a sliding manner, the front ends of the guide rods are provided with pull bars, and when the sizes of the openings at the front ends of the two clamp arms are changed, the pull bars and the draw bars are gathered or separated from each other and are positioned at each angular position of a triangle as a whole. Therefore, when the pull rod and the traction rod are mutually gathered, the occupied space area of each rod is small, the insertion of the minimally invasive incision in the initial state is completely met, when the pull rod and the traction rod are mutually separated, the initial orifice of the minimally invasive incision is pulled and expanded, and the expansion space required by the implementation of the operation is met.)

1. The utility model provides a visual little incision struts ware, includes and is connected two tong arms (10) by pivot (11) are articulated, and tong arm (10) rear end has handle (12) of being convenient for to grip, still is provided with the locking unit who prescribes a limit to aperture between the two tong arms (10), its characterized in that: the front ends of the two clamp arms (10) are provided with draw bars (13) which are far away from the surfaces where the clamp arms (10) are located and extend vertically, guide rods (20) are connected to the hinged rotating shafts (11) of the two clamp arms (10) in a sliding mode, the front ends of the guide rods (20) are provided with draw bars (21), and when the sizes of openings at the front ends of the two clamp arms (10) are changed, the draw bars (21) and the draw bars (13) are gathered or separated from each other and are located at each angular position of a triangle as a whole.

2. A visual micro-incision distractor according to claim 1, wherein: the traction rod (13) and the pull rod (21) are integrally straight rod-shaped, are mutually parallel and have smooth spherical or curved rod ends.

3. A visual micro-incision distractor according to claim 1, wherein: the draw bar (13) and the pull rod (21) are integrally in an arc shape, the arc-shaped openings point outwards, and the body surfaces of the draw bar (13) and the two pull rods (21) are arranged in a Y shape when the draw bar and the two pull rods are gathered together or separated.

4. A visual micro-incision distractor according to claim 1, wherein: when the traction rod (13) and the two pull rods (21) are gathered, the rod ends of the traction rod, the two pull rods and the two pull rods are positioned on the same straight line.

5. A visual micro-incision distractor according to claim 1 or 2 or 3 or 4, wherein: the middle rod body of the guide rod (20) is movably matched with the through hole on the rotating shaft (11) in an inserting mode, and the guide rod (20) is located on the angular bisector direction of the two clamp arms (10) to move.

6. A visual micro-incision distractor according to claim 1 or 2 or 3 or 4, wherein: the middle rod body of the guide rod (20) is in inserted type movable fit with the through hole on the rotating shaft (11), the rear end of the guide rod (20) is connected to the rear section of the clamp arm (10) through two connecting rods (15), and the two ends of each connecting rod (15) are hinged.

7. A visual micro-incision distractor according to claim 6, wherein: the locking unit between the two forceps arms (10) is a ratchet bar (14) which is mutually matched, the length direction of the ratchet bar (14) is arc-shaped, and the curvature center is the shaft core of the rotating shaft (11).

8. A visual micro-incision distractor according to claim 2 or 4, wherein: the spherical parts (131, 211) of the rod ends of the traction rod (13) and the pull rod (21) are positioned at the positions where the traction rod (13) and the pull rod (21) are far away from each other.

9. A visual micro-incision distractor according to claim 1 or 2 or 3 or 4, wherein: the guide rod (20) and the two clamp arms (10) are of hollow tube structures, a camera (30), a light source (40) and a flushing port (50) are respectively arranged on the guide rod (20) and the two clamp arms (10), when the traction rod (13) and the pull-out guide rod (21) are separated from each other, the projection of the camera (30), the light source (40) and the flushing port (50) in the shaft core direction of the rotating shaft (11) is located in a triangular area with the two traction rods (13) and the pull-out guide rod (21) as vertex angles, the lines or water flow paths of the camera (30), the light source (40) and the flushing port (50) are arranged along a tube cavity, and the rear portions of the two clamp arms (10) are provided with batteries and Bluetooth transmitting devices.

10. A visual micro-incision distractor according to claim 1, wherein: the front section and the rear section of each clamp arm (10) at the position of the rotating shaft (11) are V-shaped, the rotating shaft (11) is hinged with the tip parts of the two V-shaped sections, and a return spring for driving the opening degree of the rear section of each clamp arm (10) to be changed from small to large is arranged between the two clamp arms (10).

Technical Field

The invention relates to the field of medical instruments, in particular to a visible micro-incision spreader.

Background

With the continuous progress of medical technology, the requirements of medical quality and recovery condition of illness state are continuously improved, minimally invasive surgery is gradually popularized, and the minimally invasive surgery has the advantages of small wound, quick recovery, few complications and the like.

In the minimally invasive surgery, due to the fact that the micro-incision is not fully exposed and the visual field is not clearly displayed, the nail hole or the needle hole is repeatedly searched for many times and for a long time, the surgery time is prolonged, and even the micro-incision is finally changed into a large incision. Therefore, the micro-incision needs to be distracted to facilitate illumination and surgical procedures.

Disclosure of Invention

The invention aims to provide a visual micro-incision spreader for simply and quickly spreading skin and muscle tissues beside a micro-incision.

In order to achieve the purpose, the invention adopts the following technical scheme: a visible micro-incision spreader comprises two clamp arms which are hinged through a rotating shaft, handles which are convenient to hold are arranged at the rear ends of the clamp arms, a locking unit for limiting the opening degree between the two clamp arms is further arranged between the two clamp arms, a traction rod which is far away from the clamp arms and extends vertically is arranged at the front ends of the clamp arms, guide rods are further connected onto the hinged rotating shafts of the two clamp arms in a sliding mode, pull rods are arranged at the front ends of the guide rods, and when the sizes of openings at the front ends of the two clamp arms are changed, the pull rods and the traction rod are gathered or separated from each other and are located at each angular position of a triangle as a whole.

Therefore, when the pull rod and the traction rod are mutually gathered, the occupied space area of each rod is small, the insertion of the minimally invasive incision in the initial state is completely met, when the pull rod and the traction rod are mutually separated, the initial orifice of the minimally invasive incision is pulled and expanded, and the expansion space required by the implementation of the operation is met.

Drawings

FIGS. 1, 2, 3 and 7 are schematic structural diagrams of three embodiments of the present invention;

FIG. 4 is a schematic view of a pull rod and a drawbar in the shape of a curved rod;

FIG. 5 is a schematic view of the open configuration of the distractor;

fig. 6 is a schematic structural view of the distractor halves.

Detailed Description

The utility model provides a visual little incision struts ware, includes and is articulated two tong arms 10 of connecting by pivot 11, and tong arm 10 rear end has the handle 12 of being convenient for to hold, still is provided with the locking unit who prescribes a limit to aperture between the two tong arms 10, its characterized in that: the front end of the jawarms 10 is provided with a draw bar 13 which is far away from the plane where the jawarms 10 are located and extends vertically, the hinged rotating shafts 11 of the two jawarms 10 are also connected with a guide rod 20 in a sliding way, the front end of the guide rod 20 is provided with a pull bar 21, and when the size of the front end opening of the two jawarms 10 is changed, the pull bar 21 and the draw bar 13 gather or separate from each other and are located at each angular position of a triangle as a whole.

In the above-mentioned solution, since the pulling rod 21 and the pulling rod 13 can be both straight rods and arc rods, when they are arc rods, they are considered as being approximately perpendicular to the plane of the jawarms 10 and located at each angular position of the triangle as a whole. The angular positions of the triangle are the positional relationship between the pulling rod 21 and the traction rod 13 in the projection state of the plane or the parallel plane of the forceps arm 10, when in operation, medical staff opens a micro-incision, the pulling rod 21 and the traction rod 13 are gathered together by operating the handle, because the space area occupied by the pulling rod 21 and the traction rod 13 is small when the pulling rod 21 and the traction rod 13 are gathered together, the pulling rod 21 and the traction rod 13 can be inserted into the micro-incision, the pulling rod 21 and the traction rod 13 are separated by operating the handle, the micro-incision can be spread to form a triangular prism-shaped space area, and meanwhile, the locking unit limits the pulling rod 21 and the traction rod 13 to prevent the pulling rod 21 and the traction rod 13 from being folded, so that the medical staff can perform the operation, and the operation is convenient, convenient and rapid, and the operation time can be greatly reduced.