A retractable bone measurement ruler and its manufacturing method

Abstract

The invention discloses a telescopic bone measurement ruler and a manufacturing method thereof. The ruler comprises a rubber band, a pin, a first ruler, a second ruler, a first sleeve, a second sleeve and a telescopic rod, wherein one end of the telescopic rod is located in the first sleeve and is slidably connected with the first sleeve, the second sleeve is arranged at the other end of the telescopic rod, the first ruler is arranged at one side of the first sleeve, the second ruler is arranged at one side of the second sleeve, the first ruler and the second ruler are parallel, the first ruler and the second ruler are located at both sides of the telescopic rod, one end of the rubber band is arranged at a corner of the second ruler away from the first ruler, the pin is arranged at the other end of the rubber band; a plurality of acupuncture point positioning holes are arranged on the first sleeve, the second sleeve and the telescopic rod are all provided with marking lines, and the plane formed by the marking lines and the axes of the first sleeve, the second sleeve and the telescopic rod is perpendicular to the first ruler and the second ruler.

Description

Technical Field

[0001] The invention relates to the field of acupoint positioning equipment, and in particular to a retractable bone measurement ruler and a manufacturing method thereof. Background Art

[0002] The bone measurement method, also known as the "bone measurement method" in ancient times, uses the joints as the main markers to measure the size and length of various parts of the body, and uses the patient's body size as the standard according to the size, and converts it into the standard for locating acupoints in proportion. It is one of the commonly used acupoint positioning methods; however, when beginners use the bone measurement method to measure acupoints, there are errors in the positions of the midpoint and the one-third point when visually estimating the inch, and the measurement by adding and subtracting the same body inch is not accurate enough. The bone measurement ruler currently promoted on the market has the problem of uneven elasticity of the rubber band, which causes errors in the measurement of acupoints; therefore, a plastic ruler, plastic sleeve, rubber band and other materials are used to locate the acupoints using the intersection of the diagonal lines of a parallelogram, and the accurate scale of the ruler is calculated by the theorem of similar triangles, thus designing a retractable bone measurement ruler and its manufacturing method. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide a retractable bone measurement ruler and a manufacturing method thereof.

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is a retractable bone measurement ruler: comprising a rubber band, a pin, a first ruler, a second ruler, a first sleeve, a second sleeve and a retractable rod, one end of the retractable rod is located in the first sleeve and is slidably connected to the first sleeve, the second sleeve is arranged at the other end of the retractable rod, the first ruler is arranged on one side of the first sleeve, the second ruler is arranged on one side of the second sleeve, the first ruler and the second ruler are parallel, the first ruler and the second ruler are located on both sides of the retractable rod, one end of the rubber band is arranged at the corner of the second ruler away from the first ruler, and the pin is arranged at the other end of the rubber band;

[0005] The first ruler is provided with a plurality of acupuncture point positioning holes;

[0006] The first sleeve, the second sleeve and the telescopic rod are all provided with marking lines, and the plane formed by the marking lines and the axes of the first sleeve, the second sleeve and the telescopic rod is perpendicular to the first ruler and the second ruler.

[0007] As an improvement, the first ruler is provided with scales, the first ruler is 6 cm long and 10 cm wide, the short side of the first ruler is connected to the first sleeve, and the 0 scale line on the first ruler is tangent to the first sleeve.

[0008] As an improvement, the second ruler is 3 cm long and 10 cm wide, and the short side of the second ruler is connected to the second sleeve.

[0009] As an improvement, the distance from the fixed point of the rubber band on the second ruler to the marking line is 10 cm, and the distance between the fixed point of the rubber band on the second ruler and the two adjacent sides of the second ruler is 0.3 cm; the intersection of the perpendicular line from the fixed point of the rubber band to the marking line and the marking line is the 0 scale of the marking line.

[0010] As an improvement, the lengths of the first sleeve and the second sleeve are both 6 cm, the radius of the first sleeve and the second sleeve is 0.3 cm, the telescopic rod is provided with six sections, and each section of the telescopic rod is 7 cm long.

[0011] As an improvement, the length of the rubber band when not deformed is 23 cm, and the stretched length of the rubber band when it does not exceed the elastic range is not less than 52 cm.

[0012] A method for making a retractable bone measurement ruler, characterized in that it comprises the following steps: Step 1, inserting a retractable rod from one end of a first sleeve, then fixing a second sleeve and one end of the retractable rod, fixing a first ruler to one side of the first sleeve, fixing a second ruler to one side of the second sleeve in parallel with the first ruler, fixing one end of a rubber band to a corner of the second ruler away from the first ruler, and fixing a pin to the other end of the rubber band;

[0013] Step 2: Mark lines on the first sleeve, the second sleeve and the telescopic rod, and draw scale marks on the mark line on the second sleeve;

[0014] Step 3, the establishment of acupuncture point positioning holes, set the long side of the first ruler as B, and set the total length to be N (5≤N≤19, N is an integer), and the distance from one end to the acupuncture point is n (when N is an even number, 1≤n≤N / 2; when N is an odd number, 1≤n≤(N-1) / 2, n is an integer) inches, the end of the rubber band with a pin is fixed at the position of the first ruler, and the distance from the marking line on the first sleeve is b. According to "the triangle formed by the straight line parallel to one side of the triangle and the other two sides is similar to the original triangle, and the corresponding sides of the two similar triangles are proportional", the equation n / (Nn)=b / B is listed to obtain b=n*B / (Nn), and the data is substituted to obtain:

[0015] When N=5, n=1, b=B / 4; when n=2, b=2B / 3;

[0016] When N=6, n=1, b=B / 5; n=2, b=2B / 4; n=3, b=B;

[0017] When N=7, n=1, b=B / 6; n=2, b=2B / 5; n=3, b=3B / 4;

[0018] When N = 8, n = 1, b = B / 7; n = 2, b = 2B / 6; n = 3, b = 3B / 5; n = 4, b = B;

[0019] When N = 9, n = 1, b = B / 8; n = 2, b = 2B / 7; n = 3, b = 3B / 6; n = 4, b = 4B / 5;

[0020] When N = 10, n = 1, b = B / 9; n = 2, b = 2B / 8; n = 3, b = 3B / 7; n = 4, b = 4B / 6; n = 5, b = B;

[0021] When N = 11, n = 1, b = B / 10; n = 2, b = 2B / 9; n = 3, b = 3B / 8; n = 4, b = 4B / 7; n = 5, b = 5B / 6;

[0022] When N = 12, n = 1, b = B / 11; n = 2, b = 2B / 10; n = 3, b = 3B / 9; n = 4, b = 4B / 8; n = 5, b = 5B / 7; n = 6, b = B;

[0023] When N = 13, n = 1, b = B / 12; n = 2, b = 2B / 11; n = 3, b = 3B / 10; n = 4, b = 4B / 9; n = 5, b = 5B / 8; n = 6, b = 6B / 7;

[0024] When N = 14, n = 1, b = B / 13; n = 2, b = 2B / 12; n = 3, b = 3B / 11; n = 4, b = 4B / 10; n = 5, b = 5B / 9; n = 6, b = 6B / 8; n = 7, b = B;

[0025] When N = 15, n = 1, b = B / 14; n = 2, b = 2B / 13; n = 3, b = 3B / 12; n = 4, b = 4B / 11; n = 5, b = 5B / 10; n = 6, b = 6B / 9; n = 7, b = 7B / 8;

[0026] When N = 16, n = 1, b = B / 15; n = 2, b = 2B / 14; n = 3, b = 3B / 13; n = 4, b = 4B / 12; n = 5, b = 5B / 11; n = 6, b = 6B / 10; n = 7, b = 7B / 9; n = 8, b = B;

[0027] When N = 17, n = 1, b = B / 16; n = 2, b = 2B / 15; n = 3, b = 3B / 14; n = 4, b = 4B / 13; n = 5, b = 5B / 12; n = 6, b = 6B / 11; n = 7, b = 7B / 10; n = 8, b = 8B / 9;

[0028] When N=18, n=1, b=B / 17; n=2, b=2B / 16; n=3, b=3B / 15; n=4, b=4B / 14; n=5, b=5B / 13; n=6, b=6B / 12; n=7, b=7B / 11; n=8, b=B / 10; n=9, b=B;

[0029] When N=19, n=1, b=B / 18; n=2, b=2B / 17; n=3, b=3B / 16; n=4, b=4B / 15; n=5, b=5B / 14; n=6, b=6B / 13; n=7, b=7B / 12; n=8, b=B / 11; n=9, b=9B / 10;

[0030] According to the rule obtained by calculation, the long side B of the first ruler is divided into 3 to 18 equal parts. If 1 inch is taken, 1 part is taken on the ruler, and if 2 inches is taken, 2 parts are taken on the ruler. And so on, the acupuncture point positioning hole (B, b) at the acupuncture point at (N, n) can be obtained.

[0031] Compared with the prior art, the advantages of the present invention are: using the intersection of the parallelogram diagonal lines to locate the acupoints, calculating the positions of the acupoint locating holes on the first ruler by the similar triangle theorem, being able to more accurately locate the acupoints by using the bone measurement scale, directly inserting a pin into the corresponding acupoint locating hole when in use, and then the intersection of the rubber band and the marking line is the acupoint to be found, the operation is simple, the telescopic rod can be put into the first sleeve, reducing the length of the telescopic foldable bone measurement scale ruler, making it easy to carry, simple in materials, low in production cost, and convenient for expanding production. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The present invention is a front view of a telescopic bone measurement ruler and a manufacturing method thereof.

[0033] Figure 2 The first structural schematic diagram of a telescopic bone measurement ruler and a manufacturing method thereof of the present invention.

[0034] Figure 3 It is a second structural schematic diagram of a telescopic bone measurement ruler and a manufacturing method thereof of the present invention.

[0035] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0036] Figure 5 The present invention is a telescopic bone measurement ruler and a manufacturing method thereof. The present invention is a schematic structural diagram of a first straight ruler.

[0037] As shown in the figure: 1. rubber band, 2. pin, 3. first ruler, 4. second ruler, 5. first sleeve, 6. second sleeve, 7. telescopic rod, 8. acupoint locating hole, 9. marking line, 10. 0 scale. DETAILED DESCRIPTION

[0038] The telescopic bone measurement ruler and its manufacturing method of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0039] Combined with Figure 1-5 A retractable bone measurement ruler comprises a rubber band 1, a pin 2, a first ruler 3, a second ruler 4, a first sleeve 5, a second sleeve 6 and a retractable rod 7, one end of the retractable rod 7 is located in the first sleeve 5 and is slidably connected to the first sleeve 5, the second sleeve 6 is arranged at the other end of the retractable rod 7, the first ruler 3 is arranged on one side of the first sleeve 5, the second ruler 4 is arranged on one side of the second sleeve 6, the first ruler 3 and the second ruler 4 are parallel, the first ruler 3 and the second ruler 4 are located on both sides of the retractable rod 7, one end of the rubber band 1 is arranged at the corner of the second ruler 4 away from the first ruler 3, and the pin 2 is arranged at the other end of the rubber band 1;

[0040] The first ruler 3 is provided with a plurality of acupuncture point positioning holes 8;

[0041] The first sleeve 5, the second sleeve 6 and the telescopic rod 7 are all provided with marking lines 9, and the plane formed by the marking lines 9 and the axes of the first sleeve 5, the second sleeve 6 and the telescopic rod 7 is perpendicular to the first ruler 3 and the second ruler.

[0042] The first ruler 3 is provided with scales. The first ruler 3 is 6 cm long and 10 cm wide. The short side of the first ruler 3 is connected to the first sleeve 5 , and the 0 scale line on the first ruler 3 is tangent to the first sleeve 5 .

[0043] The second ruler 4 is 3 cm long and 10 cm wide, and the short side of the second ruler 4 is connected to the second sleeve 6 .

[0044] The distance from the fixed point of the rubber band 1 on the second ruler 4 to the marking line 9 is 10 cm, and the distance from the fixed point of the rubber band 1 on the second ruler 4 to the two adjacent sides of the second ruler 4 is 0.3 cm; the intersection of the perpendicular line from the fixed point of the rubber band 1 on the second ruler 4 to the marking line 9 and the marking line 9 is the 0 scale 10 of the marking line 9.

[0045] The length of the first sleeve 5 and the second sleeve 6 are both 6 cm, the radius of the first sleeve 5 and the second sleeve 6 is 0.3 cm, the telescopic rod 7 is provided with six sections, and each section of the telescopic rod 7 is 7 cm long.

[0046] The length of the rubber band 1 when not deformed is 23 cm, and the stretched length of the rubber band 1 when not exceeding the elastic range is not less than 52 cm.

[0047] A method for making a retractable bone measurement ruler, characterized in that it comprises the following steps: Step 1, inserting a retractable rod 7 from one end of a first sleeve 5, then fixing a second sleeve 6 and one end of the retractable rod 7, fixing a first straight ruler 3 on one side of the first sleeve 5, fixing a second straight ruler 4 on one side of the second sleeve 6 in parallel with the first straight ruler 3, fixing one end of a rubber band 1 on a corner of the second straight ruler 4 away from the first straight ruler 3, and fixing a pin 2 on the other end of the rubber band 1;

[0048] Step 2: draw marking lines 9 on the first sleeve 5, the second sleeve 6 and the telescopic rod 7, and draw a 0 mark 10 on the marking line 9 on the second sleeve 6;

[0049] Step 3, the establishment of the acupuncture point positioning hole 8, the long side of the first ruler 3 is set to B, and the total length is N (5≤N≤19, N is an integer), and the distance from one end to the acupuncture point is n (when N is an even number, 1≤n≤N / 2; when N is an odd number, 1≤n≤(N-1) / 2, n is an integer). The end of the rubber band 1 with the pin 2 is fixed to the position of the first ruler 3 at a distance b from the marking line 9 on the first sleeve 5. According to "the triangle formed by the straight line parallel to one side of the triangle and the other two sides is similar to the original triangle, and the corresponding sides of the two similar triangles are proportional", the equation n / (Nn)=b / B is listed to obtain b=n*B / (Nn), and the data is substituted to obtain:

[0050] When N=5, n=1, b=B / 4; when n=2, b=2B / 3;

[0051] When N=6, n=1, b=B / 5; n=2, b=2B / 4; n=3, b=B;

[0052] When N=7, n=1, b=B / 6; n=2, b=2B / 5; n=3, b=3B / 4;

[0053] When N=8, n=1, b=B / 7; n=2, b=2B / 6; n=3, b=3B / 5; n=4, b=B;

[0054] When N=9, n=1, b=B / 8; n=2, b=2B / 7; n=3, b=3B / 6; n=4, b=4B / 5;

[0055] When N=10, n=1, b=B / 9; n=2, b=2B / 8; n=3, b=3B / 7; n=4, b=4B / 6; n=5, b=B;

[0056] When N = 11, n = 1, b = B / 10; n = 2, b = 2B / 9; n = 3, b = 3B / 8; n = 4, b = 4B / 7; n = 5, b = 5B / 6;

[0057] When N = 12, n = 1, b = B / 11; n = 2, b = 2B / 10; n = 3, b = 3B / 9; n = 4, b = 4B / 8; n = 5, b = 5B / 7; n = 6, b = B;

[0058] When N = 13, n = 1, b = B / 12; n = 2, b = 2B / 11; n = 3, b = 3B / 10; n = 4, b = 4B / 9; n = 5, b = 5B / 8; n = 6, b = 6B / 7;

[0059] When N = 14, n = 1, b = B / 13; n = 2, b = 2B / 12; n = 3, b = 3B / 11; n = 4, b = 4B / 10; n = 5, b = 5B / 9; n = 6, b = 6B / 8; n = 7, b = B;

[0060] When N = 15, n = 1, b = B / 14; n = 2, b = 2B / 13; n = 3, b = 3B / 12; n = 4, b = 4B / 11; n = 5, b = 5B / 10; n = 6, b = 6B / 9; n = 7, b = 7B / 8;

[0061] When N = 16, n = 1, b = B / 15; n = 2, b = 2B / 14; n = 3, b = 3B / 13; n = 4, b = 4B / 12; n = 5, b = 5B / 11; n = 6, b = 6B / 10; n = 7, b = 7B / 9; n = 8, b = B;

[0062] When N = 17, n = 1, b = B / 16; n = 2, b = 2B / 15; n = 3, b = 3B / 14; n = 4, b = 4B / 13; n = 5, b = 5B / 12; n = 6, b = 6B / 11; n = 7, b = 7B / 10; n = 8, b = 8B / 9;

[0063] When N = 18, n = 1, b = B / 17; n = 2, b = 2B / 16; n = 3, b = 3B / 15; n = 4, b = 4B / 14; n = 5, b = 5B / 13; n = 6, b = 6B / 12; n = 7, b = 7B / 11; n = 8, b = B / 10; n = 9, b = B;

[0064] When N=19, n=1, b=B / 18; n=2, b=2B / 17; n=3, b=3B / 16; n=4, b=4B / 15; n=5, b=5B / 14; n=6, b=6B / 13; n=7, b=7B / 12; n=8, b=B / 11; n=9, b=9B / 10;

[0065] According to the rule obtained by calculation, the long side B of the first ruler 3 is divided into 3 to 18 equal parts. If 1 inch is taken, 1 part is taken on the ruler, and if 2 inches are taken, 2 parts are taken on the ruler. And so on, when the distance between the starting and ending points is N inches, the acupuncture point locating hole 8 (N, n) of the acupuncture point of n inches is taken, and the corresponding code (N, n) is marked next to the acupuncture point locating hole 8.

[0066] In the specific implementation of the present invention, step 1, insert the telescopic rod 7 from one end of the first sleeve 5, then fix the second sleeve 6 and one end of the telescopic rod 7, fix the first ruler 3 to one side of the first sleeve 5, fix the second ruler 4 to one side of the second sleeve 6 in parallel with the first ruler 3, fix one end of the rubber band 1 to the corner of the second ruler 4 away from the first ruler 3, and fix the pin 2 to the other end of the rubber band 1;

[0067] Step 2: draw marking lines 9 on the first sleeve 5, the second sleeve 6 and the telescopic rod 7, and draw a 0 mark 10 on the marking line 9 on the second sleeve 6;

[0068] Step 3, the establishment of the acupuncture point positioning hole 8, the long side of the first ruler 3 is set to B, and the total length is N (5≤N≤19, N is an integer), and the distance from one end to the acupuncture point is n (when N is an even number, 1≤n≤N / 2; when N is an odd number, 1≤n≤(N-1) / 2, n is an integer). The end of the rubber band 1 with the pin 2 is fixed to the position of the first ruler 3 at a distance b from the marking line 9 on the first sleeve 5. According to "the triangle formed by the straight line parallel to one side of the triangle and the other two sides is similar to the original triangle, and the corresponding sides of the two similar triangles are proportional", the equation n / (Nn)=b / B is listed to obtain b=n*B / (Nn), and the data is substituted to obtain:

[0069] When N=5, n=1, b=B / 4; when n=2, b=2B / 3;

[0070] When N=6, n=1, b=B / 5; n=2, b=2B / 4; n=3, b=B;

[0071] When N=7, n=1, b=B / 6; n=2, b=2B / 5; n=3, b=3B / 4;

[0072] When N=8, n=1, b=B / 7; n=2, b=2B / 6; n=3, b=3B / 5; n=4, b=B;

[0073] When N = 9, n = 1, b = B / 8; n = 2, b = 2B / 7; n = 3, b = 3B / 6; n = 4, b = 4B / 5;

[0074] When N = 10, n = 1, b = B / 9; n = 2, b = 2B / 8; n = 3, b = 3B / 7; n = 4, b = 4B / 6; n = 5, b = B;

[0075] When N = 11, n = 1, b = B / 10; n = 2, b = 2B / 9; n = 3, b = 3B / 8; n = 4, b = 4B / 7; n = 5, b = 5B / 6;

[0076] When N = 12, n = 1, b = B / 11; n = 2, b = 2B / 10; n = 3, b = 3B / 9; n = 4, b = 4B / 8; n = 5, b = 5B / 7; n = 6, b = B;

[0077] When N = 13, n = 1, b = B / 12; n = 2, b = 2B / 11; n = 3, b = 3B / 10; n = 4, b = 4B / 9; n = 5, b = 5B / 8; n = 6, b = 6B / 7;

[0078] When N = 14, n = 1, b = B / 13; n = 2, b = 2B / 12; n = 3, b = 3B / 11; n = 4, b = 4B / 10; n = 5, b = 5B / 9; n = 6, b = 6B / 8; n = 7, b = B;

[0079] When N = 15, n = 1, b = B / 14; n = 2, b = 2B / 13; n = 3, b = 3B / 12; n = 4, b = 4B / 11; n = 5, b = 5B / 10; n = 6, b = 6B / 9; n = 7, b = 7B / 8;

[0080] When N = 16, n = 1, b = B / 15; n = 2, b = 2B / 14; n = 3, b = 3B / 13; n = 4, b = 4B / 12; n = 5, b = 5B / 11; n = 6, b = 6B / 10; n = 7, b = 7B / 9; n = 8, b = B;

[0081] When N = 17, n = 1, b = B / 16; n = 2, b = 2B / 15; n = 3, b = 3B / 14; n = 4, b = 4B / 13; n = 5, b = 5B / 12; n = 6, b = 6B / 11; n = 7, b = 7B / 10; n = 8, b = 8B / 9;

[0082] When N=18, n=1, b=B / 17; n=2, b=2B / 16; n=3, b=3B / 15; n=4, b=4B / 14; n=5, b=5B / 13; n=6, b=6B / 12; n=7, b=7B / 11; n=8, b=B / 10; n=9, b=B;

[0083] When N=19, n=1, b=B / 18; n=2, b=2B / 17; n=3, b=3B / 16; n=4, b=4B / 15; n=5, b=5B / 14; n=6, b=6B / 13; n=7, b=7B / 12; n=8, b=B / 11; n=9, b=9B / 10;

[0084] According to the rule obtained by calculation, the long side B of the first ruler 3 is divided into 3 to 18 parts. If 1 inch is taken, 1 part is taken on the ruler, and if 2 inches is taken, 2 parts are taken on the ruler. By analogy, when the distance between the starting and ending points is N inches, the acupoint locating hole 8 (N, n) of the acupoint of n inches is taken, and the corresponding code (N, n) is marked next to the acupoint locating hole 8;

[0085] When in use, first pull out the telescopic rod 7 from the first sleeve 5. When it is necessary to measure an acupoint with a total length of N and a distance of n inches from one end, insert the pin 2 at one end of the rubber band 1 into the acupoint locating hole 8 on the ruler corresponding to the acupoint (N, n), and then place the 0 scale 10 on the second sleeve 6 at the starting point of the limb or trunk, and place the intersection of the acupoint locating hole 8 corresponding to the acupoint (N, n) on the first ruler 3 and the vertical line of the marking line 9 on the first sleeve 5 at the end point of the limb or trunk. The intersection of the rubber band 1 and the marking line 9 is the acupoint to be found.

[0086] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A retractable bone measurement ruler, characterized in that: The invention comprises a rubber band (1), a pin (2), a first ruler (3), a second ruler (4), a first sleeve (5), a second sleeve (6) and a telescopic rod (7), wherein one end of the telescopic rod (7) is located in the first sleeve (5) and is slidably connected to the first sleeve (5), the second sleeve (6) is arranged at the other end of the telescopic rod (7), the first ruler (3) is arranged on one side of the first sleeve (5), the second ruler (4) is arranged on one side of the second sleeve (6), the first ruler (3) and the second ruler (4) are parallel, the first ruler (3) and the second ruler (4) are located on both sides of the telescopic rod (7), one end of the rubber band (1) is arranged at a corner of the second ruler (4) away from the first ruler (3), and the pin (2) is arranged at the other end of the rubber band (1); The first ruler (3) is provided with a plurality of acupuncture point positioning holes (8); The first sleeve (5), the second sleeve (6) and the telescopic rod (7) are all provided with marking lines (9), and the plane formed by the marking lines (9) and the axes of the first sleeve (5), the second sleeve (6) and the telescopic rod (7) is perpendicular to the first ruler (3) and the second ruler; The first ruler (3) is provided with a scale, the first ruler (3) is 6 cm long and 10 cm wide, the short side of the first ruler (3) is connected to the first sleeve (5), and the 0 scale line on the first ruler (3) is tangent to the first sleeve (5); The second ruler (4) is 3 cm long and 10 cm wide, and the short side of the second ruler (4) is connected to the second sleeve (6).

2. A retractable bone measurement ruler according to claim 1, characterized in that: The distance between the fixing point of the rubber band (1) on the second ruler (4) and the marking line (9) is 10 cm, and the distance between the fixing point of the rubber band (1) on the second ruler (4) and two adjacent sides of the second ruler (4) is 0.3 cm; the intersection of the perpendicular line from the fixing point of the rubber band (1) on the second ruler (4) to the marking line (9) and the marking line (9) is the zero scale (10) of the marking line (9).

3. The retractable bone measurement ruler according to claim 1, characterized in that: The length of the first sleeve (5) and the second sleeve (6) are both 6 cm, the radius of the first sleeve (5) and the second sleeve (6) is 0.3 cm, the telescopic rod (7) is provided with six sections, and each section of the telescopic rod (7) is 7 cm long.

4. The retractable bone measurement ruler according to claim 1, characterized in that: The length of the rubber band (1) when not deformed is 23 cm, and the stretched length of the rubber band (1) when not exceeding the elastic range is not less than 52 cm.

5. The method for making a retractable bone measurement ruler according to claim 1, characterized in that: The steps include: Step 1: insert the telescopic rod (7) from one end of the first sleeve (5), then fix the second sleeve (6) and one end of the telescopic rod (7), fix the first ruler (3) on one side of the first sleeve (5), fix the second ruler (4) on one side of the second sleeve (6) in parallel with the first ruler (3), fix one end of the rubber band (1) on the corner of the second ruler (4) away from the first ruler (3), and fix the pin (2) on the other end of the rubber band (1); Step 2: draw marking lines (9) on the first sleeve (5), the second sleeve (6) and the telescopic rod (7), and draw a 0 scale mark (10) on the marking line (9) on the second sleeve (6); Step 3, the establishment of the acupuncture point positioning hole (8), the long side of the first ruler (3) is set as B, and the total length is N (5≤N≤19, N is an integer), and the distance from one end of the acupuncture point is n (when N is an even number, 1≤n≤N / 2; when N is an odd number, 1≤n≤(N-1) / 2, n is an integer) inches, the rubber band (1) is provided with a pin (2) The end is fixed at the position of the first ruler (3) and the distance from the marking line (9) on the first sleeve (5) is b. According to "the triangle formed by the straight line parallel to one side of the triangle and the other two sides is similar to the original triangle, and the corresponding sides of the two similar triangles are proportional", the equation n / (Nn)=b / B is listed to obtain b=n*B / (Nn), and the data is substituted to obtain: When N=5, n=1, b=B / 4; when n=2, b=2B / 3; When N=6, n=1, b=B / 5; n=2, b=2B / 4; n=3, b=B; When N=7, n=1, b=B / 6; n=2, b=2B / 5; n=3, b=3B / 4; When N=8, n=1, b=B / 7; n=2, b=2B / 6; n=3, b=3B / 5; n=4, b=B; When N=9, n=1, b=B / 8; n=2, b=2B / 7; n=3, b=3B / 6; n=4, b=4B / 5; When N=10, n=1, b=B / 9; n=2, b=2B / 8; n=3, b=3B / 7; n=4, b=4B / 6; n=5, b=B; When N=11, n=1, b=B / 10; n=2, b=2B / 9; n=3, b=3B / 8; n=4, b=4B / 7; n=5, b=5B / 6; When N=12, n=1, b=B / 11; n=2, b=2B / 10; n=3, b=3B / 9; n=4, b=4B / 8; n=5, b=5B / 7; n=6, b=B; When N=13, n=1, b=B / 12; n=2, b=2B / 11; n=3, b=3B / 10; n=4, b=4B / 9; n=5, b=5B / 8; n=6, b=6B / 7; When N=14, n=1, b=B / 13; n=2, b=2B / 12; n=3, b=3B / 11; n=4, b=4B / 10; n=5, b=5B / 9; n=6, b=6B / 8; n=7, b=B; When N=15, n=1, b=B / 14; n=2, b=2B / 13; n=3, b=3B / 12; n=4, b=4B / 11; n=5, b=5B / 10; n=6, b=6B / 9; n=7, b=7B / 8; When N=16, n=1, b=B / 15; n=2, b=2B / 14; n=3, b=3B / 13; n=4, b=4B / 12; n=5, b=5B / 11; n=6, b=6B / 10; n=7, b=7B / 9; n=8, b=B; When N=17, n=1, b=B / 16; n=2, b=2B / 15; n=3, b=3B / 14; n=4, b=4B / 13; n=5, b=5B / 12; n=6, b=6B / 11; n=7, b=7B / 10; n=8, b=8B / 9; When N=18, n=1, b=B / 17; n=2, b=2B / 16; n=3, b=3B / 15; n=4, b=4B / 14; n=5, b=5B / 13; n=6, b=6B / 12; n=7, b=7B / 11; n=8, b=B / 10; n=9, b=B; When N=19, n=1, b=B / 18; n=2, b=2B / 17; n=3, b=3B / 16; n=4, b=4B / 15; n=5, b=5B / 14; n=6, b=6B / 13; n=7, b=7B / 12; n=8, b=B / 11; n=9, b=9B / 10; According to the rule obtained by calculation, the long side B of the first ruler (3) is divided into 3 to 18 parts. If 1 inch is taken, 1 part is taken on the ruler, and if 2 inches is taken, 2 parts are taken on the ruler. By analogy, when the distance between the starting and ending points is N inches, the acupuncture point positioning hole 8 (N, n) of the acupuncture point of n inches is taken, and the corresponding code (N, n) is marked next to the acupuncture point positioning hole 8.

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