Medical broken nail extractor

Abstract

The invention provides a medical broken nail extractor, and relates to the technical field of medical equipment. The handle is detachably connected with the polishing head together; and the coupling structure is arranged between the grinding head and the handle and is used for being combined and fixed with the broken nail. The problems that during grinding, the grinding range is large, and the interior of a bone is prone to being damaged during nail taking are solved, through the arranged grinding head, the bone is ground in the nail breaking direction, the grinding range is controlled, damage to the bone is reduced, then through a coupling structure, the ground broken nail is better fixedly connected, and the bone breaking effect is improved. Therefore, the broken nail can be better twisted out, the broken nail can be taken out more conveniently, and meanwhile damage to bones is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a medical broken nail remover. Background Art

[0002] When people have a fracture, they usually need to insert a medical screw into the fracture site and remove the screw after the fracture heals. If the screw is in the human body for too long, the fatigue strength of the screw reaches its limit. When medical staff remove the screw, the screw is prone to be roughened or broken. After the screw is roughened or broken, medical staff still need to remove the screw. There are two main traditional methods for removing roughened or broken screws: One method is to use a trephine to grind through the bone along the length of the screw and then remove the screw. This method requires grinding through the entire bone along the length of the screw, which takes a long time and causes great damage to the bone, and may even cause re-fracture.

[0003] The second method is to first use a trephine to grind a distance inward from the opening of the screw along the screw, and then use pliers or other tools to unscrew the screw. This method does not require the entire bone to be ground through along the length of the screw. It only needs to grind a distance along the length of the screw for the pliers to grasp the screw. However, since the pliers need to be inserted into the grinding hole, the grinding hole needs to be grinded very large, which causes great damage to the bone, and when the screw is tightly connected to the bone, it will be difficult to unscrew the screw with pliers.

[0004] The above-mentioned nail removal method causes a high degree of damage to the bone during the grinding process. Moreover, when the broken nail is removed after grinding, it is easy to scratch the inside of the bone due to the thread on the surface of the broken nail, thereby causing damage again and increasing the burden of subsequent repair. Summary of the invention

[0005] The invention aims to provide a medical broken nail remover, which solves the problem that the grinding range is large and the inside of the bone is easily damaged when the nail is removed.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A medical broken nail remover, comprising: grinding heads; and, A handle, detachably connected to the grinding head; The coupling structure is detachably arranged between the grinding head and the handle, and is used for combining and fixing with the broken nail.

[0007] According to the medical broken nail remover provided by the present invention, one end of the grinding head is arranged in a wave shape, and the other end is integrally formed with a connecting tube, and grinding blocks are evenly arranged on the surface of the wave-shaped end of the grinding head, and the grinding blocks are hemispherical.

[0008] According to the medical broken nail remover provided by the present invention, a connecting block is provided at one end of the connecting tube inside the grinding head, an extension rod is rotatably provided on the connecting block, a plurality of extension rods are provided corresponding to the connecting block and are relatively inclinedly distributed, and the lower end of the extension rod is fixedly connected to the nail removal sleeve.

[0009] According to the medical broken nail remover provided by the present invention, a torsion spring is sleeved at the connection between the extension rod and the connection block to limit the rotation range of the extension rod, and the nail removal sleeve is a truncated cone structure made of rubber elastic material.

[0010] According to the medical broken nail remover provided by the present invention, the coupling structure includes a first clamping head, which is a columnar structure with an open end, a first placement groove is arranged at the closed end of the first clamping head, and a filling groove is opened at the open end of the first clamping head.

[0011] According to the medical broken nail remover provided by the present invention, the handle is a columnar structure with an open end, a push rod is movably arranged through the closed end of the handle, the push rod extends to the open end of the handle, and a piston is arranged at one end of the open end of the handle.

[0012] According to the medical broken nail remover provided by the present invention, the piston is embedded in the loading groove in the first clamping head, and the piston is pushed to move in the loading groove by the push rod to change the pressure change in the loading groove.

[0013] According to the medical broken nail remover provided by the present invention, the coupling structure includes a second clamping head, the second clamping head is a solid structure, a second placement groove is provided at one end of the second clamping head away from the handle, and a limiting clamping rod is movably provided through the bottom of the second placement groove.

[0014] According to the medical broken nail remover provided by the present invention, a buffer cavity is provided inside the second clamping head near one end of the second placement groove, a buffer spring is arranged in the buffer cavity, and the buffer spring is fixedly connected to the limiting clamping rod.

[0015] In summary, the beneficial technical effects of the present invention are: (1) The coupling structure is used to fix the broken nails that are released during grinding. The coupling structure is connected to the handle during the process of combining with the broken nails, and then the broken nails are twisted out by rotating the handle, making it easier to remove the broken nails. Secondly, the removal process will not cause damage to the inside of the bone, thereby reducing the overall damage to the bone and making subsequent recovery faster.

[0016] (2) A grinding head is used and a nail removal sleeve is arranged in the grinding head, so that the broken nails leaked out by grinding can be better wrapped. When the broken nails are fixed by the coupling structure, the nail removal sleeve prevents impurities from falling into the gap between the bone and the broken nail, thereby reducing the infection. At the same time, the broken nails can be more conveniently removed from the bone, and the nail removal sleeve plays a role in blocking impurities.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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 is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 is an overall explosion diagram of Embodiment 1 of the present invention; Figure 3 is an exploded schematic diagram of a grinding head according to an embodiment of the present invention; Figure 4 is an exploded schematic diagram of the bottom of a grinding head according to an embodiment of the present invention; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 is an overall exploded schematic diagram of Embodiment 2 of the present invention; Figure 7 is a plan view of the overall structure of Example 2 of the present invention when viewed from above; Figure 8 yes Figure 7 Sectional view at AA; Fig. 9 It is a schematic diagram of the structure of the second clamping head of Example 2 of the present invention. Attached photos

[0020] 1. Grinding head; 100, connecting tube; 101, grinding block; 103, nail removal sleeve; 104, extension rod; 105, connecting block; 106, torsion spring; 2. Coupling structure; 20, first clamping head; 201, loading slot; 202, first placement slot; 21. Second clamping head; 210. Second placement slot; 211. Limit clamping rod; 212. Buffer cavity; 213. Buffer spring; 3. Handle; 300. Push rod; 301. Piston. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of 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 cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", etc., are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms are not directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0026] Combine the following Figure 1-Figure 9 The embodiments shown in the figure describe the technical solution of the present invention:

[0027] Example 1 like Figure 1 As shown, this embodiment shows a medical broken nail remover, which includes a grinding head 1 and a handle 3 for rotating the nail remover, the grinding head 1 and the handle 3 are threadedly connected together, and a first clamping head 20 is arranged between the grinding head 1 and the handle 3, one end of the first clamping head 20 is threadedly connected to the handle 3, and the other end is embedded in the grinding head 1.

[0028] like Figure 2 and 3 As shown, specifically, the grinding head 1 is truncated cone-shaped, and the middle of the grinding head 1 is a hollow structure that is set through, and the bottom of the grinding head 1 is set to be wavy, and grinding blocks 101 are evenly arranged on the wavy surface. The grinding block 101 is hemispherical and the surface is set to be rough, thereby increasing the contact friction during rotation and grinding, and an inlaid connecting tube 100 is integrally formed at the other end of the grinding head 1 away from the wavy shape. The connecting tube 100 is a hollow structure that is passed through at both ends. The connecting tube 100 is rotatably set at one end that extends into the grinding block 101, and a nail removal sleeve 103 is fixedly connected to one end of the extension rod 104, and the nail removal sleeve 103 is made of rubber elastic material, so that the nail removal sleeve 103 can shrink and expand.

[0029] During the specific implementation, one end of the grinding head 1 is set to a wavy shape, and a grinding block 101 is set on the wavy surface. During the rotation process, the grinding head 1 is brought into contact with the patient's bone. Due to the contact between the grinding block 101 and the bone, the bone and the broken nail are ground, and then the bone is ground along the edge of the broken nail, so that a small hole is formed in the bone to leak out the internal broken nail. During the grinding process, the distance between the small hole and the broken nail does not exceed 5 mm, and the grinding depth is also within 5 mm after the broken nail leaks out, so that the size and range of the grinding hole are small, which better reduces the damage to the bone, makes the later recovery or filling more convenient, and reduces the damage to the human body.

[0030] like Figure 4 and 5 As shown, further, the other end of the grinding head 1 is integrally formed with an inlaid connecting tube 100, and the connecting tube 100 connects the grinding head 1 and the handle 3 together, and the whole is combined to take out the broken nail, and an extension rod 104 is set at one end of the connecting tube 100 extending into the grinding head 1, and the extension rod 104 is set to be inclined, and four extension rods 104 are evenly arranged, and the inclination angle is set inward, and then the lower end of the extension rod 104 is fixedly connected to the nail removal sleeve 103, and the nail removal sleeve 103 is made of rubber material, which is convenient for the nail removal tube to wrap the broken nail, and the size of the nail removal sleeve 103 can be changed according to the size of the broken nail, thereby improving the use of the nail removal sleeve 103. Range, secondly, a connecting block 105 is set at the connection between the extension rod 104 and the connecting tube 100, and the extension rod 104 is rotatably connected to the connecting tube 100 through the connecting block 105, and a torsion spring 106 is set between the connecting block 105 and the extension rod 104, so that the extension rod 104 can be reset as soon as possible after rotation through the torsion spring 106, and when the extension rod 104 is rotated to expand the nail removal sleeve 103, the reaction force of the torsion spring 106 makes the contact between the nail removal sleeve 103 and the broken nail closer, thereby avoiding impurities from falling into the bone gap when the broken nail is fixed during nail removal, thereby reducing the occurrence of pollution.

[0031] During implementation, the grinding head 1 is placed above the broken nail to contact the bone, and then the grinding head 1 is rotated to grind the bone surface. During the grinding process, due to the friction between the grinding block 101 and the bone, the bone is worn downward at the broken nail, causing the broken nail to leak out. Secondly, the leaked broken nail is wrapped by the nail removal sleeve 103, and the broken nail is in close contact with the nail removal sleeve 103, and the broken nail is initially fixed, making the subsequent clamping of the broken nail more convenient, and there is no risk of infection during clamping.

[0032] like Figure 1 and 2As shown, the first clamping head 20 is a cylinder with an opening at one end, and a filling cavity is opened inside the first clamping head 20. A first placement groove 202 is set at the opening away from one end of the first clamping head 20, and small penetration holes are opened through the first placement groove 202, and the small penetration holes extend into the filling cavity. The first placement groove 202 set in the first clamping head 20 is a polygonal structure, which clamps the broken nail when removing the nail, and the contact with the broken nail is more firm.

[0033] In this embodiment, the first clamping head 20 is threadedly connected to the handle 3, and the first clamping head 20 is installed in the grinding head 1 through the handle 3, so that the handle 3, the grinding head 1 and the first clamping head 20 form a whole. Specifically, a thread is set on the surface of the end of the first clamping head 20 away from the first placement groove 202, and a thread is also set on the inner side of the handle 3. The handle 3 and the first clamping head 20 are connected through the contact between the threads. When connecting, nail-free glue is added to the filling cavity of the first clamping head 20, and the first clamping head 20 is connected after the nail-free glue is added. On the handle 3, the handle 3 is connected to the grinding head 1 at the same time, and the broken nail that leaks out due to grinding of the grinding head 1 is contacted with the first placement groove 202 on the first clamping head 20, and the broken nail is placed in the first placement groove 202. At the same time, the nail-free glue in the filling cavity of the first clamping head 20 is pressurized to seep out from the penetration hole and then contact the broken nail. The broken nail is fixedly connected to the first clamping head 20 through the drying of the nail-free glue, and the broken nail is taken out of the bone by rotating the first clamping head 20. During the removal process, the damage to the bone is reduced, and the damaged part is repaired quickly.

[0034] Furthermore, when removing a broken nail, the surface of the broken nail is wrapped by the nail removal sleeve 103, and the first clamping head 20 is embedded in the nail removal sleeve 103. When the broken nail is filled and pasted by the first clamping head 20, the nail-free glue will not flow down with the broken nail, thereby preventing the nail-free glue from flowing into the contact port between the bone and the broken nail, making it more convenient to remove the nail and reducing the infection. The nail removal sleeve 103 prevents the nail-free glue from flowing down along the broken nail, thereby preventing the nail-free glue from bonding the broken nail to the bone, making it more convenient to remove and reducing damage to the bone at the broken nail.

[0035] like Figure 1 and 2 As shown, the handle 3 is a cylindrical structure with an open end, and a push rod 300 is movably inserted into the closed end inside the handle 3, and one end of the push rod 300 is extended into the handle 3, and a piston 301 is fixedly set at the extended end of the push rod 300. After the first clamping head 20 is connected to the handle 3, the push rod 300 and the piston 301 are embedded in the first clamping head 20 for squeezing to reduce the space.

[0036] In this embodiment, after the push rod 300 and the piston 301 arranged in the handle 3 are connected to the first clamping head 20 and the handle 3, they are embedded in the filling cavity in the first clamping head 20. The size of the piston 301 is connected to the filling cavity. When embedded in the filling cavity, it is in close contact with the inner wall surface. In addition, a push piece is provided at the other end of the push rod 300 to avoid hurting the hand during the pushing process. Through the setting of the piston 301, the pressure in the filling cavity can be changed, so that the nail-free glue in the filling cavity can flow out better. In addition, the pressure in the filling cavity can be changed by the manual piston 301, and the working principle is far from the same as the needle tube in the prior art, which will not be elaborated here.

[0037] It should be noted that when in use, the grinding head 1 is first used to grind along the broken nail, and the grinding depth and width are controlled within 5 mm after the broken nail leaks out. After the broken nail is polished out, nail-free glue is added to the first clamping head 20, and the first clamping head 20 and the handle 3 are connected. The piston 301 is used to prevent the nail-free glue from flowing out, and then the handle 3 and the first clamping head 20 are installed on the grinding head 1, so that the first clamping head 20 is embedded in the nail removal sleeve 103. The first clamping head 20 is contacted with the broken nail due to the restriction of the nail removal sleeve 103, thereby squeezing the nail-free glue onto the broken nail, and then the broken nail is removed.

[0038] Example 2 like Figure 6-9 As shown, this embodiment shows a second implementation of a medical broken nail remover. In this embodiment, the second clamping head 21 is compared with the first clamping head 20, and the main difference is: in this embodiment, the second clamping head 21 is a solid structure, and a limiting clamping rod 211 is arranged in the second placement groove 210, and the limiting clamping rod 211 is telescopically arranged in the second clamping groove. Secondly, the handle 3 does not have the push rod 300 and the piston 301 described in Example 1. In this embodiment, the handle 3 is only a tube body with one end closed, which is used to connect the second clamping head 21 to the grinding head 1.

[0039] A buffer cavity 212 is provided at one end of the second clamping head 21. Figure 8 As shown, the size of the buffer cavity 212 is 2 / 3 of the second clamping head 21, the clamping rod 211 is restricted to move through and extend into the buffer cavity 212, a buffer spring 213 is arranged between the clamping rod 211 and the buffer cavity 212, and the shape of the clamping rod 211 is as shown in FIG. Fig. 9The setting shown is different, so that the limiting clamping rod 211 has multiple concave and convex surfaces, which can shrink under the action of the buffer spring 213. The shrinkage forms a limiting groove similar to the broken nail structure between the limiting clamping rod 211, thereby limiting the clamping of the broken nail. The edge formed between the multiple concave and convex surfaces of the limiting clamping rod 211 contacts the surface of the broken nail, thereby increasing the friction between the limiting clamping rod 211 and the broken nail, fixing the broken nail, and thus rotating and twisting it out.

[0040] It should be noted that there are various shapes of the limiting clamping rod 211, and the limiting clamping rods 211 of each shape are distributed in an interlaced manner, so that the friction between the broken nail and the limiting clamping rod 211 is increased when the broken nail contacts, and the broken nail can be better restricted and fixed in the limiting groove formed by the limiting clamping rod 211, which makes it more convenient to clamp the broken nail and it is also easy to disassemble when the broken nail is twisted out.

[0041] In this embodiment, the second clamping head 21 is a solid structure, and only a buffer cavity 212 is provided at one end of the second placement groove 210. A buffer spring 213 is provided in the buffer cavity 212, and the buffer spring 213 is connected to the limiting clamping rod 211 which is provided through the second placement groove 210. A plurality of limiting clamping rods 211 are provided, so that the limiting clamping rods 211 are conveniently deformed according to the shape of the broken nail to form different shapes of broken nail clamping grooves and fix the broken nail. Then, the second clamping head 21 is connected to the handle 3. Threaded connection, when connected, the second clamping head 21 is embedded in the inside of the handle 3, and one end of the handle 3 is sealed. After the handle 3 and the second clamping head 21 are installed together, the handle 3 is threadedly connected to the grinding head 1 again, and then the grinding head 1 and the handle 3 are connected together. At the same time, the second clamping head 21 is embedded in the connecting tube 100 in the grinding head 1, and the broken nail is fixed after being wrapped by the nail sleeve 103. The work of the grinding head 1 is the same as that in Example 1, and will not be described in detail here.

[0042] It should be noted that the structures of the handle 3 and the second clamping head 21 in this example are different from those in Example 1. There is no filling and squeezing process during use. The remaining steps are basically the same as those in Example 1. The steps of Example 2 are simplified compared with those of Example 1.

[0043] To sum up, the broken nail and the nail remover of the present invention are connected through a coupling structure 2, and the coupling structure 2 is connected to the broken nail by adhesion in the first embodiment, and is fixed to the broken nail by embedding in the second embodiment. This connection method is collectively referred to as coupling to fix the broken nail and rotating to remove the broken nail. At the same time, the rotation direction of the threaded connection of the handle 3, the coupling structure 2 and the grinding head 1 is opposite to the direction of twisting out the broken nail.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A medical broken nail remover, characterized in that: include: a grinding head (1); and, A handle (3) detachably connected to the grinding head (1); The coupling structure (2) is detachably connected between the grinding head (1) and the handle (3) and is used to be combined and fixed with the broken nail so that the broken nail has a tendency to be twisted.

2. The medical broken nail remover according to claim 1, characterized in that: One end of the grinding head (1) is arranged in a wave shape, and the other end is integrally formed with a connecting tube (100) embedded therein, and a grinding block (101) is evenly arranged on the surface of the wave-shaped end of the grinding head (1), and the grinding block (101) is hemispherical.

3. The medical broken nail remover according to claim 2, characterized in that: A connecting block (105) is provided at one end of the connecting tube (100) inside the grinding head (1), and an extension rod (104) is rotatably provided on the connecting block (105). A plurality of extension rods (104) are provided corresponding to the connecting block (105) and are relatively inclinedly distributed. The lower end of the extension rod (104) is fixedly connected to the nail removal sleeve (103).

4. The medical broken nail remover according to claim 3, characterized in that: A torsion spring (106) is sleeved at the connection between the extension rod (104) and the connection block (105) for limiting the rotation range of the extension rod (104); the nail removal sleeve (103) is a truncated cone-shaped structure made of rubber elastic material.

5. The medical broken nail remover according to claim 1, characterized in that: The coupling structure (2) comprises a first clamping head (20), the first clamping head (20) being a columnar structure with one end open, the first clamping head (20) being provided with a first placement groove (202) at the closed end, and the first clamping head (20) being provided with a filling groove (201) at the open end.

6. The medical broken nail remover according to claim 5, characterized in that: The handle (3) is a columnar structure with an open end. A push rod (300) is movably arranged through the closed end of the handle (3). The push rod (300) extends to the open end of the handle (3). A piston (301) is arranged at one end of the push rod (300) at the open end of the handle (3).

7. The medical broken nail remover according to claim 6, characterized in that: The piston (301) is embedded in a filling groove (201) in the first clamping head (20), and the piston (301) is pushed by a push rod (300) to move in the filling groove (201), thereby changing the pressure in the filling groove (201).

8. The medical broken nail remover according to claim 1, characterized in that: The coupling structure (2) comprises a second clamping head (21), the second clamping head (21) being a solid structure, a second placement groove (210) being provided at one end of the second clamping head (21) away from the handle (3), and a limiting clamping rod (211) being movably provided through the bottom of the second placement groove (210).

9. The medical broken nail remover according to claim 8, characterized in that: A buffer cavity (212) is provided inside one end of the second clamping head (21) close to the second placement groove (210), a buffer spring (213) is arranged in the buffer cavity (212), and the buffer spring (213) is fixedly connected to the limiting clamping rod (211).

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