Endoscopic instrument packaging material cutting method

Abstract

A method for cutting a packaging material of an endoscopic instrument comprises the following steps: identifying the specification and shape of the endoscopic instrument, and determining the vertex of the shape; arranging and combining the vertexes to form combined shapes, and calculating the total area Sn of the combined shapes; obtaining a combined shape L0 of the minimum total area S0; planning a cutting line by permutation and combination of the combined shape L0; and setting the cutting line as a cutting scheme, and outputting the cutting scheme to a cutting machine to complete cutting and plastic packaging. Endoscope instruments of various specifications and shapes can be subjected to packaging optimal path rotation, the effective use area of packaging materials is increased by 30-50% on the premise that the workload is increased, the cost is reduced, and additional consumables are not needed; meanwhile, the cutting machine plans the cutting line of the packaging tape according to the shape of the endoscope instrument and cuts the packaging tape to a proper length, so that the waste problem caused by mismatching of the packaging material with the instrument is thoroughly solved.

Description

Technical Field

[0001] The invention relates to a technical solution for cutting packaging materials, and in particular to a method for cutting packaging materials for laparoscopic instruments. Background Art

[0002] With the continuous development of surgical operations, laparoscopic surgery, as a new and safe minimally invasive surgery, is becoming more and more widely used in clinical practice. Some large tertiary hospitals have begun to use laparoscopic surgery as the main surgical plan. Due to the sophisticated and complex structure of laparoscopic instruments, coupled with factors such as brand effect, more than 80% of laparoscopic surgical instruments are currently imported. Due to its high manufacturing difficulty and strict technical barriers, its market price is expensive, and the cost of laparoscopic surgical instruments has become a problem for hospital operating costs. In order to ensure the balance between surgical quality and instrument costs, the current solution used by hospitals is: to use a fixed set of laparoscopic instruments (i.e., laparoscopic boxes) with single-sealed instruments-in addition to the laparoscopic boxes required for surgery, select individually packaged instruments to cooperate with the surgery according to actual conditions, thereby reducing the number of sets of instruments required, and further improve the turnover speed with the fastest cleaning, disinfection and sterilization process, and reduce instrument costs. Laparoscopic instruments are mainly long-rod instruments with handles (L-type and T-type instruments). Since the packaging tape currently used in the market is rectangular in design, the single-sealed laparoscopic instruments are manually cut and packaged by the above packaging tape. Due to the mismatch in shape between the two, the wasted area of ​​packaging materials accounts for 40%-50%, and the wasted area of ​​some instruments reaches 80% (especially L-shaped). The waste of packaging materials during the reuse of instruments has led to an increase in the cost of packaging materials. As the number of times the instrument is used increases, the increased cost has actually exceeded the value of the instrument itself. As laparoscopic surgery gradually develops into the mainstream, the waste situation is even more grim. At present, the main clinical solution is to choose a more compact packaging tape and cut it to the appropriate length. This method cannot completely solve the waste problem caused by the mismatch of packaging materials and instruments, and the limited savings effect depends on the experience and subjectivity of the staff, and the effect is poor. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a method for cutting laparoscopic instrument packaging materials, and the specific technical solution is as follows: A method for cutting laparoscopic instrument packaging materials comprises the following steps: Identify the shape of the laparoscopic instrument and determine the vertices of the shape; Arrange and combine the vertices to form a combined shape, and calculate the total area S of each combined shape n ; Get the combined shape L0 with the minimum total area S0; The cutting line is planned by the arrangement and combination of the combined shapes L0; Set the cutting line as the cutting plan and output it to the cutting machine to complete cutting and plastic sealing.

[0004] Furthermore, the specifications and shapes of the laparoscope instrument include rectangular, L-shaped and T-shaped.

[0005] Furthermore, the method of permutation and combination is: (1) Coordinate system setting: Take the maximum length value y0 of the laparoscopic instrument in the Y-axis direction, and set all specifications and shapes in the first quadrant of the coordinate system; among them, the rectangular shape has 4 vertices set in the coordinate system, the L-shaped shape has 6 vertices set in the coordinate system, and the T-shaped shape has 8 vertices set in the coordinate system; (2) Vertex setting: Set the coordinates of a vertex to R (x, y) and coincide with the origin of the coordinate system, and the coordinates of any other vertex to Q (x1, y1); (3) Shape arrangement: During the arrangement of the above three types of shapes, one side is always parallel to the X-axis or Y-axis of the coordinate system; (4) Permutation and combination: Rotate the three standard shapes 90° clockwise or counterclockwise each time to obtain the coordinate points of the vertices of each standard shape at each rotation and their combined shapes.

[0006] Furthermore, the minimum interval of the coordinate values ​​of the coordinate system is 1 mm.

[0007] Furthermore, the first arrangement method is: starting from any shape, arranging along the Y-axis direction first, and moving at the minimum interval, when the Y-axis direction value reaches the maximum length value y0, then arranging along the X-axis direction.

[0008] Furthermore, the permutations and combinations are optimized: after the first permutation, the next vertex is arranged according to the vertex order, and the total area is recalculated until all possible permutations and combinations are traversed.

[0009] Furthermore, the cutting machine assigns values ​​to all the permutation and combination shapes in random order, and selects a starting shape according to the assigned order.

[0010] Furthermore, the rotation of the initial shape is only in the same direction under the constraint of the first arrangement method.

[0011] Furthermore, among all the permutations and combinations, a permutation and combination scheme with the smallest total area is selected, and the cutting line is planned according to the scheme.

[0012] Furthermore, the cutting line is delineated along the midline of the intervals between the different shapes, and the coordinates of the cutting line formed by the delineation are output to the cutting machine for cutting.

[0013] Beneficial effects: The present invention can realize the optimal path rotation for packaging laparoscopic instruments of various specifications and shapes, increase the effective use area of ​​packaging materials by 30-50%, reduce costs, and do not require additional consumables; at the same time, the cutting machine plans the packaging tape cutting line according to the shape of the laparoscopic instrument, cuts the appropriate length, and completely solves the waste problem caused by packaging materials not matching the instrument. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0015] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0016] A method for cutting laparoscopic instrument packaging materials comprises the following steps: (1) Identify the shape of the laparoscopic instrument and determine the vertices of the shape; (2) Arrange and combine the vertices to form a composite shape and calculate the total area S of each composite shape n ; (3) Obtain the combined shape L0 with the minimum total area S0; (4) Planning the cutting line by permutation and combination of the combined shapes L0; (5) Set the cutting line as the cutting plan and output it to the cutting machine to complete cutting and plastic sealing.

[0017] Among them, the specifications and shapes of the laparoscopic instrument include rectangular, L-shaped and T-shaped; therefore, the rectangular laparoscopic instrument has 4 vertices, the L-shaped laparoscopic instrument has 6 vertices, and the T-shaped laparoscopic instrument has 8 vertices.

[0018] In one embodiment, the method of permutation and combination is: (1) Coordinate system setting: Take the maximum length value y0 of the laparoscopic instrument in the Y-axis direction, and set all specifications and shapes in the first quadrant of the coordinate system; among them, the rectangular shape has 4 vertices set in the coordinate system, the L-shaped shape has 6 vertices set in the coordinate system, and the T-shaped shape has 8 vertices set in the coordinate system; (2) Vertex setting: Set the coordinates of a vertex to R (x, y) and coincide with the origin of the coordinate system, and the coordinates of any other vertex to Q (x1, y1); (3) Shape arrangement: During the arrangement of the above three types of shapes, one side is always parallel to the X-axis or Y-axis of the coordinate system; (4) Permutation and combination: Rotate the three standard shapes 90° clockwise or counterclockwise each time to obtain the coordinate points of the vertices of each standard shape at each rotation and their combined shapes.

[0019] Preferably, the minimum interval of the coordinate values ​​of the coordinate system is 1 mm.

[0020] In order to better complete the above arrangement and combination, the first arrangement method is set as follows: starting from any shape, arrange it along the Y axis first, and move it at the minimum interval. When the Y axis value reaches the maximum length value y0, arrange it along the X axis.

[0021] Specifically, any shape is selected, and each shape is based on a fixed vertex as the starting point R (0, 0), and the other vertices and their contained coordinates are determined accordingly. After the vertex of the shape is fixed, the Y-axis value is set to y2. The subsequent shapes are arranged preferentially along the Y-axis direction and moved at the minimum interval. Therefore, the Y-axis value of the next shape vertex can be determined to be (y2+0.001). When the value of the Y-axis direction after arrangement in this way is ≥ y0, that is, ≤0, and then a shape is arranged in the X-axis direction according to the above rules. When all shapes are arranged, the total area is calculated. The calculation method is to obtain the maximum value x0 in the X-axis direction among the arranged shapes. The area at this time is x0*y0, which is the total area under this scheme.

[0022] According to the above permutations and combinations, the permutations and combinations of various specifications and shapes are optimized: after the first permutation, the next vertex is arranged according to the vertex order, and the total area is recalculated until all possible permutations and combinations are traversed.

[0023] In one embodiment, the cutting machine selects the starting shape: the cutting machine assigns values ​​to all the permutation and combination shapes in random order, and selects the starting shape according to the assigned order.

[0024] Wherein, the initial shape rotation situation only adopts the rotation in the same direction under the constraint of the first arrangement method.

[0025] Cutting scheme selection: Among all the permutations and combinations, select the one with the smallest total area and plan the cutting line according to the permutation and combination.

[0026] Cutting line output: The cutting line is drawn along the center line of the interval between different shapes, and the coordinates of the cutting line formed by the drawing are output to the cutting machine for cutting.

[0027] Finally, the cutting route is planned according to the arrangement and combination scheme with the smallest area, and the plan is output to the cutting machine for heat sealing. The heat sealing scheme can be cut according to the reserved openings of different shapes.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for cutting laparoscopic instrument packaging materials, characterized in that: The following steps are involved: Identify the shape of the laparoscopic instrument and determine the vertices of the shape; Arrange and combine the vertices to form a combined shape, and calculate the total area S of each combined shape n ; Get the combined shape L0 with the minimum total area S0; The cutting line is planned by the arrangement and combination of the combined shapes L0; Set the cutting line as the cutting plan and output it to the cutting machine to complete cutting and plastic sealing.

2. A method for cutting laparoscopic instrument packaging materials according to claim 1, characterized in that: The specifications and shapes of the laparoscope instrument include rectangular, L-shaped and T-shaped.

3. A method for cutting laparoscopic instrument packaging materials according to claim 2, characterized in that: The method of permutation and combination is: (1) Coordinate system setting: Take the maximum length value y0 of the laparoscopic instrument in the Y-axis direction, and set all specifications and shapes in the first quadrant of the coordinate system; among them, the rectangular shape has 4 vertices set in the coordinate system, the L-shaped shape has 6 vertices set in the coordinate system, and the T-shaped shape has 8 vertices set in the coordinate system; (2) Vertex setting: Set the coordinates of a vertex to R (x, y) and coincide with the origin of the coordinate system, and the coordinates of any other vertex to Q (x1, y1); (3) Shape arrangement: During the arrangement of the above three types of shapes, one side is always parallel to the X-axis or Y-axis of the coordinate system; (4) Permutation and combination: Rotate the three standard shapes 90° clockwise or counterclockwise each time to obtain the coordinate points of the vertices of each standard shape at each rotation and their combined shapes.

4. A method for cutting laparoscopic instrument packaging materials according to claim 3, characterized in that: The minimum interval of the coordinate values ​​of the coordinate system is 1 mm.

5. A method for cutting laparoscopic instrument packaging materials according to claim 4, characterized in that: The first arrangement method: starting from any shape, arrange along the Y-axis direction first, and move at the minimum interval. When the Y-axis direction value reaches the maximum length value y0, arrange along the X-axis direction.

6. A method for cutting laparoscopic instrument packaging materials according to claim 5, characterized in that: Optimize the permutations and combinations: After the first permutation, arrange the next vertex according to the vertex order and recalculate the total area until all possible permutations and combinations are traversed.

7. A method for cutting laparoscopic instrument packaging materials according to claim 6, characterized in that: The cutting machine assigns values ​​to all the permutations and combinations in random order and selects the starting shape based on the assigned order.

8. The method for cutting laparoscopic instrument packaging material according to claim 7, characterized in that: The rotation of the initial shape is only in the same direction under the constraint of the first arrangement method.

9. The method for cutting laparoscopic instrument packaging material according to claim 7, characterized in that: Among all the permutations and combinations, select the one with the smallest total area and plan the cutting line based on it.

10. A method for cutting laparoscopic instrument packaging materials according to claim 9, characterized in that: The cutting line is delineated along the center line of the interval between different shapes, and the coordinates of the cutting line formed by the delineation are output to the cutting machine for cutting.