Diameter-adjustable tendon measuring device

Abstract

The invention provides a diameter-adjustable tendon measuring device, and relates to the technical field of medical instruments.The device comprises a blade fixing frame and a blade cover, a cavity is formed between the blade fixing frame and the blade cover, a stirring disc and a hole diameter changing disc are arranged in the cavity, and the hole diameter changing disc is composed of a plurality of blade units; and the shifting disc is rotationally arranged on the blade fixing frame and is in driving connection with the blade unit. When the poking disc is poked by external driving force, the poking disc drives the blade units to rotate on the blade fixing frame at the same time, at the moment, the hole diameter of the measuring hole formed by the blade units changes, the measuring hole is used for measuring the tendon diameter, the size of the measuring hole changes according to the change of the tendon diameter, and the measuring accuracy is improved. The method is simple and rapid, improves the measurement efficiency, and is more accurate in measurement data.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a device for measuring tendons with adjustable diameter. Background Art

[0002] With the development of sports medicine, anterior cruciate ligament injury of the knee joint is one of the common sports injuries. Therefore, ligament reconstruction surgery is required. And how to improve the efficiency of measuring the tendon diameter to adapt to different bone tunnel sizes is a particularly important step in the whole surgical process.

[0003] Currently, an integrated graduated cylinder is mainly used to measure the tendon diameter. The tendon passes through sleeves with multiple diameter sizes in sequence until the sleeve that just allows the tendon to pass through is found to determine the tendon diameter.

[0004] The existing measurement method not only has low efficiency, but also has data inaccuracy, resulting in misjudgment of the mismatch between the tendon diameter and the bone tunnel during the doctor's operation. The existing tendon measuring cylinder has an aperture size set at intervals of 0.5 mm, and can only measure tendons at intervals of 0.5 mm, having the defect of size discontinuity, and the multiple apertures of the graduated cylinder have the problem of large volume. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a device for measuring tendons with adjustable diameter, so as to solve the technical problems in the prior art that when using an integrated graduated cylinder to measure the tendon diameter, since the tendon passes through sleeves with multiple diameter sizes in sequence until the sleeve that just allows the tendon to pass through is found to determine the tendon diameter, the measurement method is inefficient and the data is inaccurate.

[0006] To achieve the above purpose, the present invention provides a device for measuring tendons with adjustable diameter, including a blade fixing frame and a blade cover. There is a cavity between the blade fixing frame and the blade cover. A toggle disk and an aperture change disk are arranged in the cavity. The aperture change disk is composed of several blade units and is rotatably arranged on the blade fixing frame. The toggle disk is drivingly connected to the blade units. When the toggle disk is toggled, the aperture of the measurement hole formed by several blade units changes.

[0007] Preferably, the blade unit is set as an arc-shaped strip.

[0008] Preferably, the toggle disk is provided with sliding grooves having the same number as the blade units. The sliding grooves are arranged in an array centered on the toggle disk, and the openings of several sliding grooves are all through.

[0009] Preferably, the sliding groove is set as a U-shaped groove.

[0010] Preferably, the toggle disk is provided with a first through hole, and the openings of several sliding grooves are in communication with the first through hole.

[0011] Preferably, a toggle plate is provided on the edge of the toggle disk, and a reference line is provided on the toggle plate.

[0012] Preferably, one end of an adjusting column is movably provided in the sliding groove, and the other end of the adjusting column is drivingly connected to one end of the blade unit.

[0013] Preferably, a blade fixing pin is provided at the other end of the blade unit, and the blade unit is rotatably connected to the blade fixing frame via the blade fixing pin.

[0014] Preferably, a second through hole is provided on the blade fixing frame, and a third through hole is provided on the blade cover. The second through hole and the third through hole have the same aperture and are concentrically arranged. The apertures of the second through hole and the third through hole are both larger than the maximum aperture of the measuring hole formed by the blade unit.

[0015] Preferably, a dial is provided on the blade cover.

[0016] The device for measuring tendons with adjustable diameter provided by the present invention has the following technical effects:

[0017] The device for measuring tendons with adjustable diameter is mainly composed of a blade fixing frame and a blade cover. A toggle plate and an aperture change plate are arranged between the blade fixing frame and the blade cover. The aperture change plate is composed of a plurality of blade units and is rotatably arranged on the blade fixing frame. The toggle plate is drivingly connected to the blade units. When the toggle plate of the present invention is toggled by an external driving force, the toggle plate drives the plurality of blade units to rotate simultaneously on the blade fixing frame. At this time, the aperture of the measuring hole formed by the plurality of blade units changes. The tendon diameter is measured by using the measuring hole. The size of the measuring hole changes according to the change of the tendon diameter. The method is simple and fast, and the measurement efficiency is improved. At the same time, the measurement data is also more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention 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 described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the device for measuring tendons with adjustable diameter according to the present invention;

[0020] Figure 2 yes Figure 1 A front view of a device for measuring tendons with adjustable diameter;

[0021] Figure 3 yes Figure 1 Schematic diagram of the internal structure of the device for measuring tendons with adjustable diameter;

[0022] Figure 4 yes Figure 3 Schematic diagram of the internal structure of the medium structure;

[0023] Figure 5 yes Figure 4 Schematic diagram of part of the structure.

[0024] in, Figures 1 - 5 :

[0025] 1. Blade fixing frame; 11. Second through hole;

[0026] 2. blade cover; 21. dial; 22. third through hole;

[0027] 3. a toggle plate; 31. a sliding groove; 32. a first through hole; 33. a toggle plate; 331. a reference line;

[0028] 4. Aperture changing disk; 41. Blade unit; 42. Measuring hole;

[0029] 5. Adjustment column;

[0030] 6. Blade fixing pin. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0032] As mentioned in the background technology, the measurement method in the prior art is not only inefficient, but also has data inaccuracy, causing doctors to misjudge the mismatch between the tendon diameter and the bone channel during surgery. The existing tendon measuring cylinder has an aperture size set at intervals of 0.5 mm, which can only measure tendons with an interval of 0.5 mm, and has the defect of size discontinuity. In addition, the multiple apertures of the measuring cylinder have the problem of large volume.

[0033] Based on this, the present invention provides a device for measuring tendons with adjustable diameter. When the toggle disk of the present invention is toggled by an external driving force, the toggle disk drives a plurality of blade units to rotate simultaneously on a blade fixing frame. At this time, the aperture of the measuring hole formed by the plurality of blade units changes. The tendon diameter is measured using this measuring hole. The size of the measuring hole changes according to the change in the tendon diameter. This is simple and fast, and while improving the measurement efficiency, the measurement data is also more accurate.

[0034] The following will combine with specific appended Figures 1 - 5 to detail the preferred implementation plan of the device for measuring tendons with adjustable diameter of the present invention.

[0035] As Figures 1 - 5 shown, it is a schematic structural diagram of the device for measuring tendons with adjustable diameter according to a preferred implementation of the present invention. This device for measuring tendons with adjustable diameter includes a blade fixing frame 1 and a blade cover 2. A scale disk 21 is provided on the blade cover 2. The shapes and sizes of the blade fixing frame 1 and the blade cover 2 are the same. And there are three lugs on the blade fixing frame 1, and there are also three lugs on the blade cover 2. The positions of the three lugs on the blade fixing frame 1 are opposite to the lugs on the blade cover 2, and there are threaded holes on the lugs. In this way, screws or bolts pass through the lugs on the blade fixing frame 1 and the lugs on the blade cover 2 at the same time, and the connection and fixation between the blade fixing frame 1 and the blade cover 2 can be realized.

[0036] As Figure 2 and Figure 5 shown, a second through hole 11 is provided on the blade fixing frame 1, and a third through hole 22 is provided on the blade cover 2. The apertures of the second through hole 11 and the third through hole 22 are the same and are concentrically arranged.

[0037] There is a cavity between the blade fixing frame 1 and the blade cover 2. The shape of the cavity is cylindrical. A dial 3 and an aperture changing disk 4 are provided in this cavity. The dial 3 is arranged close to the blade cover 2, and the aperture changing disk 4 is arranged close to the blade fixing frame 1.

[0038] The aperture changing disk 4 of this implementation is composed of several blade units 41. Preferably, it is composed of 12 blade units 41. And the shape of the blade unit 41 is preferably arc-shaped strip. The specific shape of the blade unit 41 is as Figure 5 shown. The 12 blade units 41 are stacked one by one to form a circle to form the aperture changing disk 4. As Figure 4 shown, when the blade unit 41 is driven by the dial 3 and rotates on the blade fixing frame 1 within a certain range, the aperture of the measuring hole 42 formed in the aperture changing disk 4 changes.

[0039] It should be noted that the apertures of the second through hole 11 and the third through hole 22 are both larger than the maximum aperture of the measuring hole 42 formed by the blade unit 41, so as to ensure that the tendon can enter the measuring hole 42.

[0040] In order to realize the driving of the blade unit 41 of the aperture changing disk 4 by the dial 3, as Figure 3As shown, a first through hole 32 is provided on the dial 3. The diameter of the first through hole 32 is larger than the diameters of the second through hole 11 and the third through hole 22. The first through hole 32 is located at the center of the dial 3. The dial 3 is provided with sliding grooves 31 having the same number as the number of blade units 41. That is, the sliding grooves 31 in this embodiment also include 12. The 12 sliding grooves 31 are distributed in an array centered on the dial 3. The openings of the 12 sliding grooves 31 communicate with the first through hole 32.

[0041] In addition, an adjustment post 5 is provided between the dial 3 and the aperture change disk 4. The adjustment post 5 is preferably cylindrical. The adjustment post 5 realizes the driving of the aperture change disk 4 by the dial 3, thereby promoting the change of the aperture of the measurement hole 42 of the aperture change disk 4.

[0042] The sliding groove 31 in this embodiment is preferably a U-shaped groove and can also be other shapes. As long as the width of the sliding groove 31 is larger than the diameter of the adjustment post 5 and the adjustment post 5 can freely slide in the sliding groove 31, the present invention does not limit the shape of the sliding groove 31.

[0043] Specifically, as Figure 3 and Figure 4 shown, one end of the adjustment post 5 is located in the sliding groove 31 of the dial 3. The width of the sliding groove 31 is larger than the diameter of the adjustment post 5. The other end of the adjustment post 5 is drivingly connected to one end of the blade unit 41. The other end of the blade unit 41 is rotatably connected to the blade fixing frame 1 through a blade fixing pin 6. In this way, under the driving of the adjustment post 5, the blade unit 41 can rotate around the blade fixing pin 6 within a certain range. When the 12 blade units 41 rotate simultaneously, the aperture of the measurement hole 42 surrounded by them can change accordingly.

[0044] To facilitate driving the rotation of the dial 3, as Figure 2 shown, a dialing piece 33 is provided at the edge of the dial 3. The dialing piece 33 is integrally formed with the dial 3 and protrudes from the dial 3. That is, the dialing piece 33 constitutes a lug of the dial 3. A reference line 331 is provided on the dialing piece 33.

[0045] It should be noted that the reference line 331 in this embodiment can be a protruding line or a recessed line. The present invention does not limit this, as long as it can play an indicating role.

[0046] Since a scale disk 21 is provided on the blade cover 2, the reference line 331 on the dialing piece 33 corresponds to the scale disk 21. When the reference line 331 on the dialing piece 33 rotates to a certain scale on the scale disk 21 on the blade cover 2, it is the measured value of the tendon diameter by the measurement hole 42.

[0047] The specific process is as follows: Estimate the tendon diameter before measurement. According to the scale 21 on the blade cover 2, rotate the shifting piece 33 of the shifting disk 3 to an appropriate position. Pass the woven tendon through the measurement hole 42, and adjust the size of the measurement hole 42 until the tendon can just pass through it. At this time, the diameter indicated by the shifting piece 33 on the scale 21 of the blade cover 2 is the tendon diameter.

[0048] The aperture diameter of the measurement hole 42 of the present invention can be continuously changed. In this way, the tendon diameter can be quickly measured, greatly improving the surgical efficiency and making the operation more convenient.

[0049] In the description of the present invention, it should be noted that unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0050] In the description of the present invention, it should also 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An apparatus for measuring tendons with adjustable diameter, characterized in that, It includes a blade fixing frame and a blade cover. There is a cavity between the blade fixing frame and the blade cover. A shifting disk and an aperture changing disk are arranged in the cavity. The aperture changing disk is composed of several blade units and is rotatably arranged on the blade fixing frame. The shifting disk is drivingly connected to the blade units. When the shifting disk is shifted, the aperture of the measuring hole formed by several blade units changes.

2. The device for measuring a tendon with an adjustable diameter according to claim 1, characterized in that, The blade unit is set as an arc-shaped strip.

3. The device for measuring a tendon with adjustable diameter according to claim 2, wherein The shifting disk is provided with sliding grooves having the same number as the blade units. The sliding grooves are arranged in an array centered on the shifting disk, and the openings of several sliding grooves are all through.

4. The device for measuring tendons with adjustable diameter according to claim 3, characterized in that, The sliding groove is set as a U-shaped groove.

5. The device for measuring a tendon with an adjustable diameter according to claim 3, wherein, The shifting disk is provided with a first through hole, and the openings of several sliding grooves communicate with the first through hole.

6. The device for measuring a tendon with adjustable diameter according to claim 3, characterized in that, A shifting piece is arranged at the edge of the shifting disk, and a reference line is arranged on the shifting piece.

7. The device for measuring tendons with adjustable diameter according to claim 3, characterized in that, One end of an adjusting column is movably arranged in the sliding groove, and the other end of the adjusting column is drivingly connected to one end of the blade unit.

8. The device for measuring a tendon with an adjustable diameter according to claim 7, characterized in that, The other end of the blade unit is provided with a blade fixing pin, and the blade unit is rotatably connected to the blade fixing frame through the blade fixing pin.

9. The device for measuring a tendon with an adjustable diameter according to any one of claims 1-8, characterized in that, The blade fixing frame is provided with a second through hole, and the blade cover is provided with a third through hole. The second through hole and the third through hole have the same aperture and are concentrically arranged. The apertures of the second through hole and the third through hole are both larger than the maximum aperture of the measuring hole formed by the blade units.

10. The device for measuring tendons with adjustable diameter according to claim 1, wherein, The blade cover is provided with a scale disk.

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