Equipment for detecting light reflectivity of black surgical suture needle

Abstract

The utility model discloses equipment for detecting the light reflectivity of a black surgical suture needle. The equipment comprises a computer, a light source, a spectrograph, an optical fiber 1, an optical fiber 2, a reflectivity integrating sphere, a fixed lifting bracket and a camera obscura, the computer is connected with the spectrograph through a USB (Universal Serial Bus) data line; one end of the optical fiber 1 is connected with a halogen lamp light outlet of the light source, and the other end of the optical fiber 1 is connected with a side optical fiber interface of the reflectivity integrating sphere; one end of the optical fiber 2 is connected with the optical fiber interface of the spectrometer, and the other end is connected with the bottom optical fiber interface of the reflectivity integrating sphere; by adopting the equipment, the luminous reflectance of the black suture needle can be simply, conveniently, quickly and quantitatively detected, and the quality identification of the black suture needle is facilitated, so that a basis and a guarantee are provided for clinically selecting the qualified black suture needle.

Description

Technical Field

[0001] The utility model relates to the technical field of optical reflection detection, in particular to a device for detecting the light reflectivity of a black surgical suture needle. Background Art

[0002] At present, surgical suturing is an important part of surgical operations, and the quality of surgical suturing is often closely related to the success or failure of the operation. In the increasingly popular laparoscopic surgery, surgical suturing is often difficult, and one of the influencing factors is the poor visibility of the suture needle. Today's suture needles are usually made of stainless steel. In order to make them have excellent penetration performance, suture needle manufacturers often grind and polish them very smoothly. At the same time, the surface of the suture needle also has a high light reflectivity. However, in laparoscopic surgery, the high light reflectivity of the suture needle becomes a disadvantage: under the strong light source of the laparoscope, the contrast between the high-reflectivity suture needle and the surrounding tissue is weak, and in laparoscopic surgery, the surgeon observes the situation in the body through a digital screen, and the perception of spatial depth of field is weakened, and the dexterity of the laparoscopic instruments used is reduced, which increases the difficulty of identifying the suture needle when the suture needle is frequently clamped during surgery. In order to solve this problem, many suture needle manufacturers have developed a black suture needle, using oxidation coating and other processes to change the surface of the suture needle from the original metal color to black, reducing light reflection and enhancing the contrast with human tissue, thereby effectively improving the visibility of the suture needle.

[0003] However, although black suture needles are claimed to be able to reduce light reflectivity, due to their irregular shape and small size, existing light reflectivity testing methods and equipment can often only be used for planes with regular shapes or larger objects, and cannot be directly used to detect the light reflectivity of black suture needles. How to quantify the light reflectivity of black suture needles and monitor their quality remains a thorny problem.

[0004] In the prior art, JBMcKernan et al. studied a method for detecting the light reflectance of surgical suture needles, which detected the light reflected by black needles and silver needles respectively, and was able to detect that the light reflected by black needles was lower than that by silver needles. However, when using this method for detection, a large number of samples need to be piled up to completely cover the detection area. Therefore, the light reflectance of the overall black needle sample can only be roughly evaluated, and the quality of the light reflectance of individual black needles cannot be accurately detected. Patent No. CN108603834A discloses a system for measuring the light transmission and / or light reflection properties of a transparent sample sheet. The principle of detecting reflectivity is as follows: the transmittance detector is oriented to be axially aligned with the sample port of an integrating sphere; and can be positioned to measure the light from the integrating sphere via the sample port, so that the light beam from the integrating sphere can pass through or be transported to the sample sheet between the arms that respectively carry the transmittance detector and the sample port, allowing the transmittance and reflectivity to be measured simultaneously by replacing the external light source with the transmission detector; although this method can detect the light reflectivity of the sample, it is only applicable to samples in the shape of a sheet, and does not take into account that the black needle is relatively small in size and has a variety of needle shapes and curvatures, so this method is not applicable to black needles.

[0005] Therefore, how to provide a device that can quickly and quantitatively detect the light reflectivity of black suture needles is a problem that those skilled in the art urgently need to solve. Utility Model Content

[0006] In view of this, the utility model provides a device for detecting the light reflectivity of black surgical suture needles. The device can simply and quickly quantitatively detect the light reflectivity of black suture needles, which can be beneficial to the quality identification of black suture needles, thereby providing a basis and guarantee for the clinical selection of qualified black suture needles.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A device for detecting the light reflectivity of a black surgical suture needle, comprising: a computer, a light source, a spectrometer, an optical fiber 1, an optical fiber 2, a reflectivity integrating sphere, a fixed lifting bracket, and a dark box;

[0009] Among them, the computer is connected to the spectrometer via a USB data cable; one end of the optical fiber 1 is connected to the halogen lamp light outlet of the light source, and the other end is connected to the side optical fiber interface of the reflectivity integrating sphere; one end of the optical fiber 2 is connected to the optical fiber interface of the spectrometer, and the other end is connected to the bottom optical fiber interface of the reflectivity integrating sphere.

[0010] Furthermore, the device for detecting the light reflectivity of black surgical suture needles also includes a standard white plate and a sample plate; the standard white plate and the sample plate are placed overlappingly; a sample placement port for placing suture needle samples is provided in the center of the sample plate; the cross-section of the sample placement port is a trapezoid that is wide at the top and narrow at the bottom, the size of the upper edge is 12 to 36 mm, and the size of the lower edge is 6 to 18 mm.

[0011] Furthermore, the light source is one or more of one or more electroluminescent strips, one or more light emitting diodes (LEDs), one or more light emitting optical fibers, one or more halogen lamps, and one or more incandescent lamps.

[0012] Furthermore, the power of the light source is 15-200W, and the wavelength of the light source is 300-2000nm.

[0013] Furthermore, the wavelength of the spectrometer is 300-1000 nm.

[0014] Furthermore, the diameter of the optical fiber core of the optical fiber 1 and the optical fiber 2 is 100-1000 μm.

[0015] Furthermore, the reflectivity integrating sphere includes an incident light port connected to a light source, a sample port, and an output light port connected to a photodetector.

[0016] Furthermore, the diameter of the reflectivity integrating sphere is 30-200 nm.

[0017] Furthermore, the adjustable height of the fixed lifting bracket is 0 to 30 cm.

[0018] It can be seen from the above technical solution that compared with the prior art, the utility model discloses a device for detecting the light reflectivity of black surgical suture needles. The device can simply and quickly quantitatively detect the light reflectivity of black suture needles, which can be beneficial to the quality identification of black suture needles, thereby providing a basis and guarantee for the clinical selection of qualified black suture needles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 The accompanying drawing is a schematic diagram of the overall structure of a device for detecting light reflectivity of a black surgical suture needle provided by the utility model;

[0021] Figure 2The accompanying drawing is a schematic diagram of the structure of a sample plate in a device for detecting light reflectance of a black surgical suture needle provided by the utility model;

[0022] Figure 3 The accompanying drawing is a schematic diagram of the specific structure of the reflectivity integrating sphere provided by the utility model;

[0023] In the figure, 1, computer; 2, light source; 3, spectrometer; 4, optical fiber 1; 5, optical fiber 2; 6, reflectivity integrating sphere; 7, fixed lifting bracket; 8, dark box; 9, standard white board; 10, sample board; 11, USB data cable; 21, halogen lamp light outlet; 31, optical fiber interface; 61, side optical fiber interface; 62, bottom optical fiber interface; 101, sample port; 611, incident light port connected to light source; 612, sample port; 613, output light port connected to photodetector;

[0024] Figure 4 The accompanying drawing is a schematic diagram of the structure of sample processing in a device for detecting light reflectance of black surgical suture needles provided by the utility model;

[0025] In the figure, 12, foam board; 13, sample; 14, fixing pin. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] refer to Figures 1 to 3 , a device for detecting the light reflectivity of a black surgical suture needle, comprising: a computer 1, a light source 2, a spectrometer 3, an optical fiber 14, an optical fiber 25, a reflectivity integrating sphere 6, a fixed lifting bracket 7, a dark box 8, a standard whiteboard 9 and a sample plate 10; the computer 1 is connected to the spectrometer 3 via a USB data cable 11; one end of the optical fiber 14 is connected to the halogen lamp light outlet 21 of the light source 2, and the other end is connected to the side optical fiber interface 61 of the reflectivity integrating sphere 6; one end of the optical fiber 25 is connected to the optical fiber interface 31 of the spectrometer 3, and the other end is connected to the bottom optical fiber interface 62 of the reflectivity integrating sphere 6; the reflectivity integrating sphere 6 includes an incident light port connected to the light source, a sample port, and an exit light port connected to a photoelectric detector; a sample placement port 101 for placing a suture needle sample is provided in the center of the sample plate; the cross section of the sample placement port is a trapezoid with a wide upper portion and a narrow lower portion, the size of the upper edge is 12 to 36 mm, and the size of the lower edge is 6 to 18 mm.

[0029] Example 2

[0030] The black surgical suture needle light reflectivity detection device is built according to Example 1, wherein the selected light source is a halogen lamp, the light source power is 150W, the spectrometer wavelength range is 380-780nm, the optical fiber diameters of optical fibers 1 and 2 are 800μm, the diameter of the light integrating sphere is 100mm, the adjustable height of the sample lifting bracket is 15cm, the size of the upper edge of the sample plate sample port is 24mm, and the size of the lower edge is 12mm.

[0031] Take medical stainless steel silver needles and black needles with needle diameters of 118, 88, 68, 63, and 48 mm, respectively, and use them according to the Figure 4 Schematic diagram for sample processing. Prepare foam board, fixing needles, tweezers, glue and other sample preparation materials, then insert multiple fixing needles into the foam board to fix the sample, use tweezers to pick up several sewing needle samples, stack them up from bottom to top, and drop a small amount of glue on both ends of the sample to fix it. There should be no glue on the middle test surface of the sample to form a sample with a width of 8mm; start the Spectra luminous flux measurement software in the computer, then turn on the power, preheat the halogen lamp for 10 minutes, so that the light source reaches a stable state; next, place the standard white plate in the integrating sphere measurement window, close the dark box, and measure the reference light; turn off the power to form a dark background and measure the background light. After completing the calibration, open the dark box, remove the standard white plate on the integrating sphere measurement window, and then install the sample plate on the integrating sphere measurement window. Then place the sample to be tested in the sample placement port of the sample plate, close the dark box, turn on the power to test the sample, and the measurement results are shown in Table 1.

[0032] The calculation method of light reflectance is p = θ 样品 / θ 标准白板 , where θ 样品 is the luminous flux measured when the sample is placed, θ 标准白板 It is the luminous flux measured when a standard white board is placed.

[0033] Table 1 Light reflectivity test results of Example 1

[0034] Needle diameter Silver Needle % Black needle% 118 74.57 73.27 88 74.51 73.15 68 72.92 71.48 63 72.20 71.13 48 72.50 71.60

[0035] It can be seen from Table 1 that the device of the present invention can effectively detect the difference in light reflectivity between silver and black suture needles.

[0036] Example 3

[0037] The black surgical suture needle light reflectivity detection device is built according to Example 1, wherein the selected light source is LED, the light source power is 100W, the spectrometer wavelength range is 380-780nm, the fiber diameters of optical fibers 1 and 2 are 600μm, the diameter of the light integrating sphere is 38mm, the adjustable height of the sample lifting bracket is 15cm, the size of the upper edge of the sample plate sample port is 36mm, and the size of the lower edge is 18mm.

[0038] Take medical stainless steel silver needles and black needles with needle diameters of 118, 88, 68, 63, and 48 mm, respectively, and use them according to the Figure 4 Schematic diagram for sample processing. Prepare foam board, fixing needles, tweezers, glue and other sample preparation materials, then insert multiple fixing needles into the foam board to fix the sample, use tweezers to pick up several sewing needle samples, stack them up from bottom to top, and drop a small amount of glue on both ends of the sample to fix it. There should be no glue on the middle test surface of the sample to form a sample with a width of 6mm; start the Spectra luminous flux measurement software in the computer, then turn on the power, preheat the halogen lamp for 10 minutes, so that the light source reaches a stable state; next, place the standard white plate in the integrating sphere measurement window, close the dark box, and measure the reference light; turn off the power to form a dark background and measure the background light. After completing the calibration, open the dark box, remove the standard white plate on the integrating sphere measurement window, and then install the sample plate on the integrating sphere measurement window. Then place the sample to be tested in the sample placement port of the sample plate, close the dark box, turn on the power to test the sample, and the measurement results are shown in Table 2.

[0039] The calculation method of light reflectance is p = θ 样品 / θ 标准白板 , where θ 样品 is the luminous flux measured when the sample is placed, θ 标准白板 It is the luminous flux measured when a standard white board is placed.

[0040] Table 2 Light reflectivity test results of Example 2

[0041] Needle diameter Silver Needle % Black needle% 118 48.15 4.49 88 51.43 4.86 68 56.46 4.93 63 49.51 5.84 48 57.45 5.80

[0042] It can be seen from Table 2 that the equipment of the present invention can effectively detect the difference in light reflectance between silver and black suture needles, and the detection results for silver and black suture needles are significantly different.

[0043] Example 4

[0044] The black surgical suture needle light reflectivity detection device is built according to Example 1, wherein the selected light source is a luminous optical fiber, the light source power is 60W, the wavelength range of the spectrometer is 380-780nm, the optical fiber diameters of optical fibers 1 and 2 are 400μm, the diameter of the light integrating sphere is 15mm, the adjustable height of the sample lifting bracket is 15cm, the size of the upper edge of the sample plate sample port is 12mm, and the size of the lower edge is 6mm.

[0045] Take medical stainless steel silver needles and black needles with needle diameters of 118, 88, 68, 63, and 48 mm, respectively, and use them according to the Figure 4 Schematic diagram for sample processing. Prepare foam board, fixing needles, tweezers, glue and other sample preparation materials, then insert multiple fixing needles into the foam board to fix the sample, use tweezers to pick up several sewing needle samples, stack them up from bottom to top, and drop a small amount of glue on both ends of the sample to fix it. There should be no glue on the middle test surface of the sample to form a sample with a width of 4mm; start the Spectra luminous flux measurement software in the computer, then turn on the power, preheat the halogen lamp for 10 minutes, so that the light source reaches a stable state; next, place the standard white plate in the integrating sphere measurement window, close the dark box, and measure the reference light; turn off the power to form a dark background and measure the background light. After completing the calibration, open the dark box, remove the standard white plate on the integrating sphere measurement window, and then install the sample plate on the integrating sphere measurement window. Then place the sample to be tested in the sample placement port of the sample plate, close the dark box, turn on the power to test the sample, and the measurement results are shown in Table 3.

[0046] The calculation method of light reflectance is p = θ 样品 / θ 标准白板 , where θ 样品 is the luminous flux measured when the sample is placed, θ 标准白板 It is the luminous flux measured when a standard white board is placed.

[0047] Table 3 Light reflectivity test results of Example 3

[0048] Needle diameter Silver Needle % Black needle% 118 24.45 18.78 88 23.78 16.58 68 20.66 14.45 63 19.40 13.39 48 18.50 12.10

[0049] It can be seen from Table 3 that the light reflectivity difference between the silver and black suture needles can be effectively detected using the equipment of the present invention.

[0050] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0051] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for detecting the light reflectivity of a black surgical suture needle, characterized in that: include: Computer (1), light source (2), spectrometer (3), optical fiber 1 (4), optical fiber 2 (5), reflectivity integrating sphere (6), fixed lifting bracket (7), dark box (8); The computer (1) is connected to the spectrometer (3) via a USB data cable (11); one end of the optical fiber 1 (4) is connected to the halogen lamp light outlet (21) of the light source (2), and the other end is connected to the side optical fiber interface (61) of the reflectivity integrating sphere (6); one end of the optical fiber 2 (5) is connected to the optical fiber interface (31) of the spectrometer (3), and the other end is connected to the bottom optical fiber interface (62) of the reflectivity integrating sphere (6).

2. The device for detecting the light reflectivity of a black surgical suture needle according to claim 1, characterized in that: It also includes a standard white plate (9) and a sample plate (10); the standard white plate and the sample plate are placed overlapping each other; a sample placement opening (101) is provided in the center of the sample plate for placing a suture needle sample; the cross-section of the sample placement opening is a trapezoid that is wide at the top and narrow at the bottom, with an upper edge size of 12 to 36 mm and a lower edge size of 6 to 18 mm.

3. The device for detecting the light reflectivity of a black surgical suture needle according to claim 1, characterized in that: The light source (2) is one or more of one or more electroluminescent strips, one or more light-emitting diodes, one or more light-emitting optical fibers, one or more halogen lamps, and one or more incandescent lamps.

4. The device for detecting light reflectivity of black surgical suture needles according to claim 3, characterized in that: The power of the light source (2) is 15-200 W, and the wavelength of the light source (2) is 300-2000 nm.

5. The device for detecting the light reflectivity of a black surgical suture needle according to claim 1, characterized in that: The wavelength of the spectrometer (3) is 300-1000 nm.

6. The device for detecting the light reflectivity of a black surgical suture needle according to claim 1, characterized in that: The diameter of the optical fiber core of the optical fiber 1 (4) and the optical fiber 2 (5) is 100-1000 μm.

7. The device for detecting light reflectivity of black surgical suture needles according to claim 1, characterized in that: The reflectivity integrating sphere (6) comprises an incident light port (611) connected to a light source, a sample port (612), and an output light port (613) connected to a photoelectric detector.

8. The device for detecting light reflectivity of black surgical suture needles according to claim 1, characterized in that: The diameter of the reflectivity integrating sphere (6) is 30-200 nm.

9. The device for detecting light reflectivity of black surgical suture needles according to claim 1, characterized in that: The adjustable height of the fixed lifting bracket (7) is 0-30 cm.

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