CN112985230A - Irregular suture diameter measuring device and method - Google Patents
Irregular suture diameter measuring device and method Download PDFInfo
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- CN112985230A CN112985230A CN202110098718.9A CN202110098718A CN112985230A CN 112985230 A CN112985230 A CN 112985230A CN 202110098718 A CN202110098718 A CN 202110098718A CN 112985230 A CN112985230 A CN 112985230A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
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Abstract
The invention provides a device and a method for measuring the diameter of an irregular suture line, belonging to the field of medical suture line detection, wherein the measuring device mainly comprises a dial indicator, a presser foot, a fixed reference table, a positioning block, a fixed base, a pedal plate, a lifting line and a collecting device; the measuring method mainly realizes the automatic lifting of the presser foot by stepping on the pedal, after the presser foot is contacted with a suture, the wire diameter values of two vertical surfaces are accurately measured, and the acquisition device collects the measured wire diameter values and then automatically calculates the equivalent wire diameter value; the invention establishes an equivalent wire diameter test measuring method suitable for the natural non-circular section shape suture by measuring the wire diameter values of two vertical surfaces of the natural non-circular section suture according to the principle that the model area of the natural non-circular section suture is equal to the circular area and taking the calculated equivalence of the two vertical wire diameter values as the wire diameter value of the suture.
Description
Technical Field
The invention relates to the field of medical suture detection, in particular to a device and a method for measuring the diameter of an irregular suture.
Background
The medical suture is a special medical suture used for ligation hemostasis, suture hemostasis and tissue suture in surgical operations, and is divided into absorbable suture and non-absorbable suture. Absorbable surgical suture (hereinafter referred to as suture) refers to a novel suture material which can be degraded and absorbed by human body after being implanted into human tissue during surgical suture, does not need to be removed, and is a new type of suture material for avoiding the pain of removing the suture. Absorbable surgical sutures are divided into single-strand and multi-strand sutures according to structure and manufacturing process.
The single-strand and multi-strand absorbable sutures are observed to be circular or approximately circular in cross-sectional shape by optical microscopy. The cross section of the absorbable collagen suture line is approximately elliptical, a long axial surface and a short axial surface exist, the judgment is not appropriate only according to the numerical value of one measuring surface as the line diameter of the suture line, and when a short axis with a small value is adopted, the equivalent line diameter of the suture line is easy to be small, so that the line selection specification is easy to be large clinically, and the operation is inconvenient; when a long shaft with a larger value is adopted, the equivalent wire diameter of the suture is easy to be larger, so that the wire selection specification is easy to be smaller clinically, the safety degree of product use is reduced, and the use safety risk control of the product is not facilitated.
Since an absorbable collagen suture is derived from a tendon, the suture formed by physical processing is approximately elliptical. The suture is naturally grown, the length and the thickness of each suture are different, and the specification of each suture needs to be judged through measuring equipment in the production process. And because of the natural characteristics of the thread, the distribution point position of the whole thread has certain random characteristics, and the position of the specific point position cannot be accurately measured by adopting a medical suture line diameter instrument with 12.7mm presser foot in YY1116-2010 absorbable surgical suture, so that the measurement error is easy to generate. When the mechanical vernier caliper is used, the force for measuring the position of the stuck point of a person is not uniform every time, so that the measurement is rough and error, and all measurement data are inconvenient to collect and analyze. Although the non-contact measuring device can effectively avoid gross errors caused by a measurer, the boundary blurring may be caused by the diffraction of light during measurement, so that the measured value is larger, and the accurate measurement of data is not facilitated.
Disclosure of Invention
The invention mainly aims to provide an irregular suture diameter measuring device and method, which can effectively solve the problems mentioned in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
an irregular suture line diameter measuring device comprises a positioning system and a measuring system, wherein the positioning system consists of a fixed base, a cantilever structure, a fixed reference table and a positioning block, the cantilever structure is fixed at the tail end of the fixed base, the fixed reference table is fixed at the center of the fixed base, and the positioning block is fixed on the fixed reference table; the measuring system comprises a dial indicator, a presser foot, a pedal plate, a lifting wire and an acquisition device, wherein the dial indicator is fixed on the cantilever structure, the bottom end of the dial indicator is provided with the presser foot, the pedal plate is connected to the top of an upright post of the dial indicator through one lifting wire and connected to a tapping joint through another data wire, and the acquisition device is connected to the side face of the dial indicator through one tapping joint by using the data wire.
Preferably, the cantilever structure is an adjustable lifting structure, the tail of the lifting line is clamped on an upright post through screwing a bolt by hand, and the dial indicator is vertically clamped on the head of the cantilever structure.
Preferably, the presser foot, the fixed reference table and the positioning block are made of marble.
Preferably, the acquisition device mainly comprises a tablet personal computer and a data line.
Preferably, the minimum division value of the dial indicator is 0.002mm, the flatness of the reference surface of the presser foot and the fixed reference table is within 0.005mm, the presser foot and the fixed reference table are parallel to each other, and the parallel deviation is +/-0.005 mm; the diameter of the circular presser foot is 1-3 mm; the weight of the presser foot is 80-200g, and the deviation is +/-0.5 g.
Preferably, the diameter of a cylinder below the fixed reference table is 10-30mm, the cylinder is fixedly connected with the fixed base through screws, the width of the contact surface of the upper part of the fixed reference table and the presser foot is 1-5mm, the positioning block is arc-shaped, the thickness of the positioning block is 2-4mm, and the arc-shaped sharp corner is chamfered and is fixedly and vertically connected with the contact surface of the presser foot through screws.
The method for measuring the diameter of the irregular sewing thread comprises the following steps of realizing automatic lifting of a presser foot by stepping on a pedal, accurately measuring the diameter values of two vertical surfaces after the presser foot is contacted with the sewing thread, collecting the measured diameter values by a collecting device, and automatically calculating an equivalent diameter value, wherein the method specifically comprises the following steps:
s1, designing an equivalent wire diameter calculation program in advance;
s2, controlling the lifting line to descend by using the pedal plate so that the presser foot is slowly lowered until the weight of the whole presser foot is applied to the sewing line;
s3, after the presser foot is contacted with the suture, the acquisition device reads the wire diameter value of the cross section at the moment;
s4, after the two wire diameter values are measured, the collection of equivalent wire diameter data can be completed by clicking confirmation, and specification judgment is automatically carried out;
preferably, the equivalent wire diameter in S1 is obtained by determining a cross-sectional calculation model area of the non-circular cross-sectional suture line through a real cross-section of the suture line, and then calculating the equivalent wire diameter of the suture line by approximately equalizing the model area to the circular area; the formula of the equivalent wire diameter of the suture line converted according to the principle that the elliptical area is equal to the circular area is as follows:
D1-the equivalent wire diameter of the absorbable collagen suture in millimeters (mm);
b-measurement of the minimum width in millimeters (mm) of a given position cross section of an absorbable collagen suture;
and a is the measured value of the section width when the wire body rotates 90 degrees after the b value is measured, and the unit is millimeter (mm).
Wherein, the equivalent calculation formula of the elliptical area and the circular area is as follows:
Sellipse shape＝π*a*b/4
SRound (T-shaped)＝π*D*D/4
In the formula:
Sellipse shapeArea of ellipse (mm)2)；
SRound (T-shaped)Area of a circle (mm)2)；
Pi-circumference ratio;
d-the wire diameter (mm) of the circle.
Compared with the prior art, the invention has the following beneficial effects:
the invention calculates the equivalent wire diameter value of the suture according to the area equivalent principle by surveying and mapping the real section shape of the suture. The equivalent wire diameter value calculated by the test method has good uniformity, and not only can the reasonable type selection of the suture be ensured, but also the use safety can be ensured. Through the improvement of the positioning system and the measuring system, the wire diameter measuring error in production is effectively reduced, and the wire diameter measuring efficiency and accuracy are improved.
Drawings
FIG. 1 is a microscopic view of cross-sectional shapes of various suture sections in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a measuring device according to the present invention;
FIG. 3 is a graph comparing the tensile strength of the suture of the present invention in the equivalent wire diameter test method and the row I suture method.
In the figure: 1. a dial indicator; 2. a presser foot; 3. fixing a reference table; 4. positioning blocks; 5. a fixed base; 6. a foot pedal; 7. a lifting line; 8. a collection device; 9. a cantilever structure.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1:
randomly selecting some absorbable collagen suture lines, naturally and flatly placing the suture lines in the center of the table top of the fixed reference table 3 on the table-type wire diameter instrument, and fixing the suture lines by using two hands; the foot is stepped on the foot plate 6, and the lifting wire 7 is lowered to slowly lower the presser foot 2 until the whole weight of the presser foot 2 is applied to the sewing thread.
The minimum width of the cross section is measured at about three positions 1/4, 1/2 and 3/4 of the wire body, and then the wire body is fixed with both hands after being rotated by 90 degrees, and then the width of the cross section is measured. After the presser foot 2 is stably contacted with the suture, the panel computer collects two measurement values, and calculates a single value of the equivalent wire diameter at the position according to a preset program. After recording the individual values at three points 1/4, 1/2 and 3/4, the results are recorded in table 1 as the mean of the equivalent wire diameter values for the suture.
Example 2:
randomly selecting some absorbable collagen sutures, judging according to an equivalent wire diameter test method, selecting 10 sutures in eight specifications of 6-0, 5-0, 4-0T, 3-0, 2-0, 0 and 1 respectively, testing by a medical suture tension tester according to a test method of 5.3 tensile strength in YY1116-2010 absorbable surgical suture, and recording the results in table 1.
Table 1: the number distribution of each specification under two test methods is shown in the table:
table 2: tensile strength values for each gauge suture under both test methods are tabulated:
the comparison result shows that the single value and the average value of each specification determined by the equivalent wire diameter test method of the absorbable collagen suture line meet the standard requirement, and the tensile strength value of the absorbable collagen suture line gradually increases along with the increase of the specification.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an irregular suture line footpath measuring device which characterized in that: the device comprises a positioning system and a measuring system, wherein the positioning system consists of a fixed base (5), a cantilever structure (9), a fixed reference table (3) and a positioning block (4), the cantilever structure (9) is fixed at the tail end of the fixed base (5), the fixed reference table (3) is fixed at the center of the fixed base (5), and the positioning block (4) is fixed on the fixed reference table (3); the measuring system is composed of a dial indicator (1), a presser foot (2), a pedal plate (6), a lifting wire (7) and an acquisition device (8), wherein the dial indicator (1) is fixed on a cantilever structure (9), the bottom end of the dial indicator (1) is provided with the presser foot (2), the pedal plate (6) is connected to the top of an upright post of the dial indicator (1) through the lifting wire (7), is connected to a tapping joint through another data wire, and the acquisition device (8) is connected to the side face of the dial indicator (1) through the tapping joint by utilizing the data wire.
2. An irregular suture diameter measuring device according to claim 1, wherein: the cantilever structure (9) is an adjustable lifting structure, the tail part of the lifting wire (7) is clamped on an upright post through screwing a bolt by hand, and the dial indicator (1) is vertically clamped at the head part of the cantilever structure (9).
3. The irregular suture diameter measuring device and method of claim 1, wherein: the presser foot (2), the fixed reference table (3) and the positioning block (4) are made of marble.
4. An irregular suture diameter measuring device according to claim 1, wherein: the acquisition device (8) mainly comprises a tablet personal computer and a data line.
5. An irregular suture diameter measuring device according to claim 1, wherein: the minimum division value of the dial indicator (1) is 0.002mm, the flatness of the reference surface of the presser foot (2) and the fixed reference table (3) is within 0.005mm, the presser foot and the fixed reference table are parallel to each other, and the parallel deviation is +/-0.005 mm; the diameter of the circular presser foot is 1-3 mm; the weight of the presser foot (2) is 80-200g, and the deviation is +/-0.5 g.
6. An irregular suture diameter measuring device according to claim 1, wherein: the diameter of a cylinder below the fixed reference table (3) is 10-30mm, the cylinder is fixedly connected with the fixed base (5) through screws, the width of the contact surface of the upper portion of the fixed reference table (3) and the presser foot (2) is 1-5mm, the positioning block (4) is arc-shaped, the thickness of the positioning block is 2-4mm, and the contact surface of the arc-shaped sharp corner is chamfered and is fixedly and vertically connected with the contact surface of the presser foot (2) through screws.
7. A method for measuring the diameter of an irregular suture line is characterized by comprising the following steps: realize the automatic rising of presser foot (2) through foot pedal (6), after presser foot (2) and suture contact, the accurate line diameter value of measuring two perpendicular planes, collection system (8) collect the line diameter value of measurement and calculate the equivalent line diameter value again automatically, specifically include following step:
s1, designing an equivalent wire diameter calculation program in advance;
s2, controlling the lifting wire (7) to descend by using the pedal (6) so that the presser foot (2) is slowly lowered until the weight of the whole presser foot (2) is applied to the sewing thread;
s3, after the presser foot (2) is contacted with the suture, the acquisition device (8) reads the wire diameter value of the cross section at the moment;
and S4, after the two wire diameter values are measured, clicking to confirm, and then completing the collection of equivalent wire diameter data and automatically judging the specification.
8. An irregular suture diameter measuring device according to claim 7, wherein: the equivalent wire diameter in the S1 is obtained by determining the section calculation model area of the suture line through the real section of the non-circular section suture line, and calculating the equivalent wire diameter of the suture line by approximately equalizing the model area with the circular area; the formula of the equivalent wire diameter of the suture line converted according to the principle that the elliptical area is equal to the circular area is as follows:
D1-the equivalent wire diameter of the absorbable collagen suture in millimeters (mm);
b-measurement of the minimum width in millimeters (mm) of a given position cross section of an absorbable collagen suture;
and a is the measured value of the section width when the wire body rotates 90 degrees after the b value is measured, and the unit is millimeter (mm).
Wherein, the equivalent calculation formula of the elliptical area and the circular area is as follows:
Sellipse shape＝π*a*b/4
SRound (T-shaped)＝π*D*D/4
In the formula:
Sellipse shapeArea of ellipse (mm)2)；
SRound (T-shaped)Area of a circle (mm)2)；
Pi-circumference ratio;
d-the wire diameter (mm) of the circle.
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| CN202110098718.9A CN112985230A (en) | 2021-01-25 | 2021-01-25 | Irregular suture diameter measuring device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110098718.9A CN112985230A (en) | 2021-01-25 | 2021-01-25 | Irregular suture diameter measuring device and method |
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| CN112985230A true CN112985230A (en) | 2021-06-18 |
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2021
- 2021-01-25 CN CN202110098718.9A patent/CN112985230A/en active Pending
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| WO2009113337A1 (en) * | 2008-03-12 | 2009-09-17 | ミドリ安全株式会社 | Seam forming apparatus and sewing machine |
| CN201637398U (en) * | 2009-10-09 | 2010-11-17 | 上海远梓电子科技有限公司 | Tester special for medical suture diameter |
| CN201974136U (en) * | 2011-01-13 | 2011-09-14 | 上海威夏环保科技有限公司 | Surgical suture-line diameter tester |
| CN202661012U (en) * | 2012-06-05 | 2013-01-09 | 浙江众达传动股份有限公司 | Outer spherical diameter and profile measuring instrument |
| CN203011294U (en) * | 2012-12-11 | 2013-06-19 | 哈尔滨奥瑞德蓝宝石制品有限公司 | Device for accurate dimension measurement |
| CN204788182U (en) * | 2015-07-02 | 2015-11-18 | 湖南航天磁电有限责任公司 | Magnetic shoe circular arc test fixture |
| CN205482817U (en) * | 2016-01-11 | 2016-08-17 | 天津市久康生物工程开发有限公司 | Can absorb stylolite line footpath on -line measuring device |
| CN208505194U (en) * | 2018-08-01 | 2019-02-15 | 北京创思工贸有限公司 | A kind of measuring device of large-sized optical elements |
| US20200400418A1 (en) * | 2019-06-19 | 2020-12-24 | Ethicon, Inc. | Systems, devices and methods for consistently and uniformly measuring the diameters of sutures |
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Inventor after: Liu Quanwei Inventor after: Yang Wuyao Inventor after: Zhou Feiteng Inventor after: Liu Quan Inventor after: Yang Yicheng Inventor before: Liu Quan Inventor before: Zhou Feiteng Inventor before: Liu Quanwei Inventor before: Yang Wuyao Inventor before: Yang Yicheng |