Pre-operation stoma positioning auxiliary device

Abstract

A preoperative stoma positioning auxiliary device comprises two first positioning ruler rods and a second positioning ruler rod, and the two first positioning ruler rods and the second positioning ruler rod are connected end to end to form a triangle. First strip-shaped holes are formed in the positions, close to the other ends, of the two first positioning ruler rods, second strip-shaped holes are formed in the positions, close to the two ends, of the second positioning ruler rod, and movable connecting pins penetrate through the first strip-shaped holes and the second strip-shaped holes; a first positioning line is arranged between the fixed connecting pin and the midpoint position of the second positioning ruler rod; wherein one first positioning ruler rod is provided with a two-connecting-rod, one end of the two-connecting-rod is connected with the fixed connecting pin, the other end of the two-connecting-rod is connected with the movable connecting pin on the first positioning ruler rod, a third strip hole is formed in the middle of the first positioning ruler rod, and a sliding block is arranged in the third strip hole. And a second positioning line is connected between the sliding block and the movable connecting pin on the other first positioning ruler rod. By means of the stoma positioning device, more accurate stoma point position determination can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a preoperative stoma positioning auxiliary device. Background Technology

[0002] The preoperative stoma location method for minimally invasive abdominal surgery generally adopts the three-point location method, that is, to determine the three points of the umbilicus, pubis and superior iliac spine, and determine the centroid of the triangle formed by them. The centroid is the stoma location.

[0003] Currently, the stoma location is generally determined by the intersection of the midlines of two triangles. During the operation, the staff needs to hold the positioning line to determine the midpoint of one side of the triangle. Due to the uncertainty of the patient's body size, the size of the triangle may vary. The midline of the triangle is generally determined by the medical staff by feeling, which can easily cause the stoma location to be deviated. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a preoperative stoma positioning auxiliary device to achieve more accurate stoma location determination.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a preoperative stoma positioning auxiliary device, including two first positioning rods and one second positioning rod, one end of each of the two first positioning rods is hinged by a fixed connecting pin, and the two ends of the second positioning rod are respectively movably connected to the other ends of the two first positioning rods.

[0006] The two first positioning rods have a first hole near the other end, and the second positioning rod has a second hole near both ends. A movable connecting pin passes through the first hole and the second hole.

[0007] A first positioning line is provided between the fixed connecting pin and the midpoint of the second positioning rod;

[0008] One of the first positioning ruler rods is equipped with two connecting rods. One end of the two connecting rods is connected to a fixed connecting pin, and the other end is connected to a movable connecting pin on the first positioning ruler rod. A third hole is provided in the middle of the first positioning ruler rod, and a slider is provided in the third hole. A midpoint positioning rod passes through the slider. One end of the midpoint positioning rod is hinged to a pin in the middle of the two connecting rods. A second positioning line is connected between the slider and the movable connecting pin on the other first positioning ruler rod.

[0009] In a preferred embodiment, two annular grooves are provided on the side wall of the movable connecting pin, with the two sides of the first hole and the second hole respectively located in the two annular grooves;

[0010] One of the movable connecting pins has a first fixing post at its top for fixing the second positioning line;

[0011] One end of the two connecting rods is hinged to the middle of another movable connecting pin.

[0012] In a preferred embodiment, the portion of the midpoint positioning rod away from the two connecting rods is provided with a fourth hole, and the slider is provided with a horizontal through hole. A vertical column is fixed inside the through hole, and the column passes through the fourth hole.

[0013] The top of the slider is provided with a second fixing post for fixing one end of the second positioning line.

[0014] In a preferred embodiment, the slider side is provided with a guide protrusion, and the two side walls of the third hole are provided with guide slots that cooperate with the guide protrusion.

[0015] In a preferred embodiment, a tension rod is threaded through the midpoint of the second positioning rod, and a limiting rod head is provided at one end of the tension rod. One end of the first positioning line is fixed to the other end of the tension rod away from the limiting rod head.

[0016] A compression spring is fitted onto the tension rod.

[0017] In a preferred embodiment, the lower end of the second fixed post is movably disposed within a groove on the top surface of the slider, and a torsion spring is disposed within the groove.

[0018] The preoperative stoma positioning aid device provided by this utility model, by adopting the above-described structure, has the following beneficial effects:

[0019] (1) It can automatically adapt to the changes in body shape of different patients, ensuring that the required triangle can be accurately replicated every time it is used, which not only improves the accuracy of stoma location determination, but also reduces the deviation caused by human judgment error;

[0020] (2) The two-link system is adopted, which eliminates the need for medical staff to manually measure or estimate the midpoint position during operation, simplifying the operation process and reducing the surgical preparation time. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of one of the movable connecting pins in this utility model.

[0024] Figure 3 This is a schematic diagram of another movable connecting pin in this utility model.

[0025] Figure 4This is a schematic diagram of the fixed connecting pin structure of this utility model.

[0026] Figure 5 This is a schematic diagram of the slider structure of this utility model.

[0027] In the diagram: First positioning rod 1, second positioning rod 2, fixed connecting pin 3, first hole 4, second hole 5, movable connecting pin 6, annular groove 601, first wire fixing post 602, double connecting rod 7, midpoint positioning rod 8, third hole 9, slider 10, guide protrusion 1001, through hole 1002, column 1003, second wire fixing post 1004, fourth hole 11, first positioning line 12, second positioning line 13, tension rod 14, limit rod head 141, compression spring 15, torsion spring 16. Detailed Implementation

[0028] like Figure 1 In the present invention, a preoperative stoma positioning auxiliary device includes two first positioning rods 1 and one second positioning rod 2. One end of the two first positioning rods 1 is hinged together by a fixed connecting pin 3, and the two ends of the second positioning rod 2 are respectively movably connected to the other ends of the two first positioning rods 1.

[0029] The two first positioning rods 1 are provided with a first hole 4 near the other end, and the second positioning rods 2 are provided with a second hole 5 near both ends. A movable connecting pin 6 passes through the first hole 4 and the second hole 5.

[0030] A first positioning line 12 is provided between the fixed connecting pin 3 and the midpoint of the second positioning rod 2;

[0031] One of the first positioning ruler rods 1 is provided with a two-link rod 7. One end of the two-link rod 7 is connected to a fixed connecting pin 3, and the other end is connected to a movable connecting pin 6 on the first positioning ruler rod 1. A third hole 9 is provided in the middle of the first positioning ruler rod 1. A slider 10 is provided in the third hole 9. A midpoint positioning rod 8 passes through the slider 10. One end of the midpoint positioning rod 8 is hinged to the pin in the middle of the two-link rod 7. A second positioning line 13 is connected between the slider 10 and the movable connecting pin 6 on the other first positioning ruler rod 1.

[0032] In a preferred embodiment, the movable connecting pin 6 has two annular grooves 601 on its side wall, and the two sides of the first hole 4 and the second hole 5 are respectively located in the two annular grooves 601.

[0033] One of the movable connecting pins 6 is provided with a first fixing post 602 for fixing the second positioning line 13 at its top;

[0034] One end of the two connecting rods 7 is hinged to the middle of another movable connecting pin 6.

[0035] In a preferred embodiment, the part of the midpoint positioning rod 8 away from the connecting rod 7 is provided with a fourth hole 11, and the slider 10 is provided with a horizontal through hole 1002. A vertical column 1003 is fixed in the through hole 1002, and the column 1003 is set through the fourth hole 11.

[0036] The top of the slider 10 is provided with a second fixing post 1004 for fixing one end of the second positioning line 13.

[0037] In a preferred embodiment, the slider 10 is provided with a guide protrusion 1001 on its side, and the two side walls of the third hole 9 are provided with guide slots that cooperate with the guide protrusion 1001.

[0038] In a preferred embodiment, a tension rod 14 is threaded through the midpoint of the second positioning rod 2, and a limiting rod head 141 is provided at one end of the tension rod 14. One end of the first positioning line 12 is fixed to the other end of the tension rod 14, which is away from the limiting rod head 141.

[0039] A compression spring 15 is fitted onto the tension rod 14.

[0040] In a preferred embodiment, the lower end of the second fixed post 1004 is movably disposed in a groove on the top surface of the slider 10, and a torsion spring 16 is disposed in the groove.

[0041] The operating principle of the preoperative stoma positioning aid device disclosed in this invention is as follows:

[0042] by Figure 1 For example, the fixed connecting pin 3 is placed at the patient's pubic bone position, and then the opening degree of the two first positioning rods 1 is adjusted so that the two movable connecting pins 6 move along the first hole 4 and the second hole 5 to the position of the navel and the superior iliac spine. During this process, the compression spring 15 can always keep the first positioning line 12 taut. The first positioning line 12 is one of the midlines of a triangle. As the movable connecting pins 6 move continuously, the length of one side of the triangle changes. By relying on the two connecting rods 7 and the midpoint positioning rod 8, the slider 10 can always be determined to be located at the midpoint of one side of the triangle. The second positioning line 13 is set on the slider 10. By relying on the intersection of the second positioning line 13 and the first positioning line 12, the stoma position can be accurately determined, thereby replacing the operator's estimation method to determine the stoma and improving the stoma positioning accuracy.

Claims

1. A preoperative stoma positioning aid comprising two first positioning rulers (1) and one second positioning ruler (2), characterized in that: One end of the two first positioning ruler rods (1) is hingedly connected by a fixed connecting pin (3), and the other end of the second positioning ruler rod (2) is movably connected with the other end of the two first positioning ruler rods (1); The two first positioning ruler rods (1) are provided with a first hole (4) near the other end, and the second positioning ruler rod (2) is provided with a second hole (5) near the other end, and a movable connecting pin (6) is arranged in the first hole (4) and the second hole (5); The fixed connecting pin (3) and the midpoint of the second positioning ruler rod (2) are provided with a first positioning line (12); One of the first positioning ruler rods (1) is provided with a two-link rod (7), one end of the two-link rod (7) is connected with the fixed connecting pin (3), the other end is connected with the movable connecting pin (6) on the first positioning ruler rod (1), a third hole (9) is arranged in the middle of the first positioning ruler rod (1), a sliding block (10) is arranged in the third hole (9), a midpoint positioning rod (8) is arranged in the sliding block (10), one end of the midpoint positioning rod (8) is hingedly connected to the pin shaft in the middle of the two-link rod (7), and the sliding block (10) and the movable connecting pin (6) on the other first positioning ruler rod (1) are connected with a second positioning line (13).

2. A preoperative stoma positioning aid according to claim 1, wherein: The side wall of the movable connecting pin (6) is provided with two annular grooves (601), and the two sides of the first hole (4) and the second hole (5) are located in the two annular grooves (601); The top of one of the movable connecting pins (6) is provided with a first wire fixing column (602) for fixing the second positioning line (13); One end of the two-link rod (7) is hingedly connected to the middle of the other movable connecting pin (6).

3. The preoperative stoma positioning aid of claim 1, wherein: The part of the midpoint positioning rod (8) away from the two-link rod (7) is provided with a fourth hole (11), the sliding block (10) is provided with a transverse through hole (1002), a vertical column (1003) is fixed in the through hole (1002), and the column (1003) passes through the fourth hole (11) and is arranged; The top of the sliding block (10) is provided with a second wire fixing column (1004) for fixing one end of the second positioning line (13).

4. The preoperative stoma positioning aid of claim 1, wherein: The side of the sliding block (10) is provided with a guide protrusion (1001), and the two side walls of the third hole (9) are provided with guide grooves matched with the guide protrusion (1001).

5. The preoperative stoma positioning aid of claim 1, wherein: The midpoint of the second positioning ruler rod (2) is provided with a tensioning rod (14), one end of the tensioning rod (14) is provided with a limiting rod head (141), and one end of the first positioning line (12) is fixed on the other end of the tensioning rod (14) away from the limiting rod head (141); The tensioning rod (14) is sleeved with a compression spring (15).

6. A preoperative stoma positioning aid according to claim 3, wherein: The lower end of the second wire fixing column (1004) is movably arranged in the groove on the top surface of the sliding block (10), and a torsion spring (16) is arranged in the groove.

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