Cobalt-chromium-tungsten-nickel spicule device with drilling function

Abstract

The invention discloses a cobalt-chromium-tungsten-nickel spicule device with a drilling function. The cobalt-chromium-tungsten-nickel spicule device comprises a spicule body, a drilling head is formed at one end of the spicule body, a third tool face and a third inclined plane intersect to form a first auxiliary cutting edge, and a fourth tool face and a fourth inclined plane intersect to form a second auxiliary cutting edge. A first auxiliary cutting edge and a second auxiliary cutting edge are formed behind a cutting edge, meanwhile, the first auxiliary cutting edge and the second auxiliary cutting edge are formed on a third inclined plane and a fourth inclined plane, and the included angle between the third inclined plane and the fourth inclined plane is 0.3-1 degree. Through the arrangement of the first auxiliary cutting edge and the second auxiliary cutting edge, after the cutting edge rotates and advances, the first auxiliary cutting edge and the second auxiliary cutting edge advance along with the rotating cutting edge, secondary cutting can be well achieved according to the rotating cutting track, redundant sclerotin on the side wall of a bone hole can be cut cleanly to the maximum extent, and the subsequent operation effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a cobalt-chromium-tungsten-nickel bone needle device with a drilling function. Background Art

[0002] Metal bone needles are an internal fixation device for treating fractures. They are made of metal materials. Metal materials have great strength and toughness, strong resistance to bending and torsion, and are biologically inert materials. The combination with bones is a mechanical lock.

[0003] With the increasing application of mechanical engineering in the medical field, the use of bone needles for corresponding drilling has become a conventional technical means in bone surgery, but the problem of excessive drilling temperature needs to be further solved, because when the tissue around the bone drilling hole is heated to 50 degrees above the critical temperature point, it will cause bone cell necrosis. For this reason, researchers have found that cobalt-chromium-tungsten-nickel alloy has extremely high ductility and strength. Bone needles made of cobalt-chromium-tungsten-nickel alloy can meet more surgical requirements. The cutting edge design of its head or blade has high cutting performance, which effectively reduces friction, reduces drilling temperature, and effectively protects the bone tissue around the drilling hole. The blade structure of the above-mentioned bone needle prepared using cobalt-chromium-tungsten-nickel alloy is generally a flat blade, a conical blade or a threaded blade, or some simple improved structures of the above structure. However, after the blade of the above structure is drilled, due to the special composition of the bone, the side wall of the bone hole has more excess bone, which affects the subsequent surgical effect. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a cobalt-chromium-tungsten-nickel bone needle device with a drilling function, including a bone needle body, a drilling head formed at one end of the bone needle body, and a first inclined plane and a second inclined plane arranged opposite to each other are formed on the drilling head, the first inclined plane and the second inclined plane extend to the end of the drilling head, and the two intersect at the extension surface outside the drilling head; a first blade face and a second blade face intersecting at the end of the drilling head are formed on the side surface between the first inclined plane and the second inclined plane, the first blade face intersects with the first inclined plane and the second inclined plane, and the first blade face intersects with the second inclined plane or the first inclined plane to form a first cutting edge, and the second blade face intersects with the first inclined plane and the second inclined plane intersects, and the second blade face intersects with the first inclined plane or the second inclined plane to form a second cutting edge; a third inclined plane and a fourth inclined plane are also formed on the side surface between the first inclined plane and the second inclined plane, and the angle between the third inclined plane and the fourth inclined plane is 0.3-1 degree; it also includes a third blade face and a fourth blade face that intersect with the first blade face and the second blade face respectively, the third blade face also intersects with the first inclined plane and the third inclined plane, and the third blade face intersects with the third inclined plane to form a first auxiliary cutting edge, the fourth blade face intersects with the second inclined plane and the fourth inclined plane, and the fourth blade face intersects with the fourth inclined plane to form a second auxiliary cutting edge. By forming the first auxiliary cutting edge and the second auxiliary cutting edge behind the cutting edge, and at the same time, the first auxiliary cutting edge and the second auxiliary cutting edge are formed on the third inclined plane and the fourth inclined plane, and the angle between the third inclined plane and the fourth inclined plane is 0.3-1 degrees, which is close to parallel, but not parallel, so that the rotational cutting trajectory of the first auxiliary cutting edge and the second auxiliary cutting edge is a truncated cone structure close to a cylinder, so that after the cutting edge rotates forward, the first auxiliary cutting edge and the second auxiliary cutting edge follow the rotational cutting forward, and with their rotational cutting trajectory, secondary cutting can be well achieved, and the excess bone on the side wall of the bone hole can be cut cleanly to the greatest extent, thereby improving the subsequent surgical effect. In the above structure, the first inclined plane and the second inclined plane structure form a temporary storage area for bone chips.

[0005] In one embodiment, the first auxiliary cutting edge is connected to the first cutting edge, and the second auxiliary cutting edge is connected to the second cutting edge. Through the above connection setting, the minimum range of the rotational cutting trajectory of the auxiliary cutting edge is the maximum range of the cutting edge, so that the excess bone after one cutting can be cut to the maximum extent. Furthermore, the cutting edge and the auxiliary cutting edge form a V-shaped structure. During the cutting process, the bone cut is blocked by the V-shaped structure and enters the space between the inclined plane and the wall of the bone hole along the inclined blade surface, reducing the influence of the broken bone on the drilling.

[0006] In one embodiment, the angle between the first cutting edge and the intersection line of the second blade surface and the second inclined plane is 60-80 degrees; the angle between the second cutting edge and the intersection line of the first blade surface and the first inclined plane is 60-80 degrees.

[0007] In one embodiment, the angle between the first inclined plane and the second inclined plane is 5-20 degrees.

[0008] In one embodiment, the angle between the first blade surface and the second inclined plane is 70-85 degrees; the angle between the second blade surface and the first inclined plane is 70-85 degrees.

[0009] In one embodiment, the angle between the third blade surface and the first inclined plane is 95-110 degrees; the angle between the fourth blade surface and the second inclined plane is 95-110 degrees; the angle between the third blade surface and the third inclined plane is 165-175 degrees, and the angle between the fourth blade surface and the fourth inclined plane is 165-175 degrees.

[0010] In one embodiment, it further comprises a head protective cap adapted to the drilling head; the first inclined plane and the second inclined plane are formed with oppositely arranged fixing grooves, and the inner wall of the head fixing cap is formed with a fixing head adapted to the protection groove. By setting the fixing groove and the fixing head structure, the head protective cap is prevented from falling off by itself.

[0011] In one embodiment, the tail protection cap is also included to match the tail end of the bone needle body, and the inner wall of the tail protection cap forms multiple inner grooves. By forming multiple inner groove structures, the tail protection cap can be prevented from falling off.

[0012] In one embodiment, a first cutting edge groove is formed on the first inclined plane along the length direction of the second cutting edge, and a first elongated straight surface is formed between the groove edge of the first cutting edge groove and the second cutting edge, and the width of the first elongated straight surface is 0.02-0.1mm.

[0013] In one embodiment, a second cutting edge groove is formed on the second inclined plane along the length direction of the first cutting edge, and a second elongated straight surface is formed between the groove edge of the second cutting edge groove and the first cutting edge, and the width of the second elongated straight surface is 0.02-0.1mm.

[0014] By designing the groove structure of the cutting edge, bone chips can form a diversion during the cutting process, making the cutting smoother and more effective! Furthermore, a long straight surface structure is formed to avoid the cutting edge from forming a small sharp angle structure, which causes the cutting edge to break during the cutting process, forming a structure with a certain thickness, ensuring the strength of the cutting edge, and ensuring the service life and cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the specific implementation modes of the present invention, the following briefly introduces the drawings required for use in the specific implementation modes. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is a front view of the bone needle body of the present invention;

[0017] Figure 2 yes Figure 1 A magnified view of middle;

[0018] Figure 3 is a rear view of the bone needle body of the present invention;

[0019] Figure 4 yes Figure 3 Enlarged view of middle B;

[0020] Figure 5 It is a left side view of the bone needle body of the present invention;

[0021] Figure 6 yes Figure 5 A magnified image of

[0022] Figure 7 is a top view of the bone needle body of the present invention;

[0023] Figure 8 yes Figure 7 Enlarged view of middle C;

[0024] Fig. 9 is a bottom view of the bone needle body of the present invention;

[0025] Fig.10 yes Fig. 9 Enlarged view of middle D;

[0026] Fig.11 is a stereoscopic view of the bone needle body of the present invention;

[0027] Fig.12 yes Fig.11 Enlarged view of E in the middle;

[0028] Fig.132 is a schematic structural diagram of a cobalt-chromium-tungsten-nickel bone needle device with a drilling function according to the present invention;

[0029] Fig.14 is a front view of another bone needle body of the present invention;

[0030] Fig.15 yes Fig.14 Enlarged view of middle F;

[0031] Fig.16 is a rear view of another bone needle body of the present invention;

[0032] Fig.17 yes Fig.16 Enlarged view of middle G;

[0033] Fig.18 is a three-dimensional diagram of another bone needle body of the present invention;

[0034] Fig.19 yes Fig.18 Enlarged view of middle H;

[0035] The reference numerals in the figure are represented as follows: 1-first inclined plane; 2-second inclined plane; 3-first blade surface; 4-second blade surface; 5-first cutting edge; 6-second cutting edge; 7-third inclined plane; 8-fourth inclined plane; 9-third blade surface; 10-fourth blade surface; 11-first auxiliary cutting edge; 12-second auxiliary cutting edge; 13-head protective cap; 14-fixing groove; 15-fixing head; 16-tail protective cap; 17-inner groove; 18-first cutting edge with groove; 19-first long straight surface; 20-second cutting edge with groove; 21-second long straight surface. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the content of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The embodiments in the present invention and other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0038] In the description of the present invention, it should 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. 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.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1

[0041] like Figure 1-13As shown, the present embodiment discloses a cobalt-chromium-nickel-tungsten bone needle device with a drilling function, which includes a bone needle body, which is generally in the shape of an elongated strip, mainly a cylindrical body, and is processed at a corresponding position, with one end forming a drilling head and the other end forming a drilling force-applying end; a first inclined plane 1 and a second inclined plane 2 that are relatively arranged are formed on the drilling head, and during processing, two relatively arranged and symmetrical inclined planes are formed at the position of the drilling head, and the intersection of the two inclined planes or the intersection of the two inclined planes on the extension surfaces outside the bone needle body is perpendicular to the central axis of the bone needle body, and the first inclined plane is perpendicular to the central axis of the bone needle body. Plane 1 and the second inclined plane 2 are respectively parts of the above two inclined planes, and the angle between the two is 5-20 degrees, preferably 10 degrees; a first cutting face 3 and a second cutting face 4 are formed on the side between the first inclined plane 1 and the second inclined plane 2 compared to the end of the drilling head, the first cutting face 3 and the second cutting face 4 are planes, the first cutting face 3 intersects with the first inclined plane 1 and the second inclined plane 2, and the first cutting face 3 intersects with the second inclined plane 2 or the first inclined plane 1 to form a first cutting edge 5, preferably, the The first blade surface 3 intersects with the second inclined plane 2 to form a first cutting edge 5. More specifically, the angle between the first blade surface 3 and the second inclined plane 2 is 70-85 degrees, preferably 80 degrees. The second blade surface 4 intersects with the first inclined plane 1 and the second inclined plane 2, and the second blade surface 4 intersects with the second inclined plane 2 or the first inclined plane 1 to form a second cutting edge 6. Preferably, the second blade surface 4 intersects with the first inclined plane 1 to form a first cutting edge 6. More specifically, the angle between the second blade surface 4 and the first inclined plane 1 is 70-85 degrees, preferably 80 degrees. A third inclined plane 7 and a fourth inclined plane 8 are also formed on the side surface between the first inclined plane 1 and the second inclined plane 2. During processing, two oppositely arranged and symmetrical inclined planes are formed on the side surface between the first inclined plane 1 and the second inclined plane 2. The intersection line of the two inclined planes on the extended surface outside the bone needle body is perpendicular to the central axis of the bone needle body. The third inclined plane 7 and the fourth inclined plane 8 are respectively part of the above two inclined planes, and the angle between the two is 0.3-1 degree, preferably 0.6 degrees; also includes a third blade face 9 and a fourth blade face 10 intersecting with the first blade face 3 and the second blade face 4 respectively, the third blade face 9 also intersects with the first inclined plane 1 and the third inclined plane 7, and the third blade face 9 intersects with the third inclined plane 7 to form a first auxiliary cutting edge 11, specifically, the angle between the third blade face 9 and the first inclined plane 1 is 95-110 degrees, preferably 100 degrees, the angle between the third blade face 9 and the third inclined plane 7 is 165-175 degrees, preferably 170 degrees, the fourth blade face 10 also intersects with the second inclined plane 2 and the fourth inclined plane 8, and the fourth blade face 10 intersects with the fourth inclined plane 8 to form a second auxiliary cutting edge 12, specifically, the angle between the fourth blade face 10 and the second inclined plane 2 is 95-110 degrees, preferably 100 degrees, and the angle between the fourth blade face 10 and the fourth inclined plane 8 is 165-175 degrees, preferably 170 degrees. .

[0042] In one embodiment, the first auxiliary cutting edge 11 is connected to the first cutting edge 5 , and the second auxiliary cutting edge 12 is connected to the second cutting edge 6 .

[0043] In one embodiment, the angle between the first cutting edge 5 and the intersection line of the second cutting surface 4 and the second inclined plane 2 is 60-80 degrees, preferably 70 degrees; the angle between the second cutting edge 6 and the intersection line of the first cutting surface 3 and the first inclined plane 1 is 60-80 degrees, preferably 70 degrees; in other words, the angle between the first inclined plane 1 and the second inclined plane 2 at the end of the drilling head is 60-80 degrees, preferably 70 degrees.

[0044] In one embodiment, it also includes a head protective cap 13 adapted to the drilling head, the first inclined plane 1 and the second inclined plane 2 form a fixing groove 14 arranged opposite to each other, and in coordination therewith, a fixing head 15 adapted to the fixing groove 14 is formed on the inner wall of the head protective cap 13, and the structures of the fixing groove 14 and the fixing head 15 are not specifically limited, and are preferably arranged in a semicircular shape. When fixed, the fixing head 15 is inserted into the fixing groove 14.

[0045] In one embodiment, it further comprises a tail protection cap 16 adapted to the tail end (force-applying end) of the bone needle body, and the inner wall of the tail protection cap 16 forms a plurality of inner grooves 17. The cross section of the inner groove 17 is arc-shaped, and the side wall forms an arc-shaped transition.

[0046] The head protection cap 13 and the tail protection cap 16 are preferably made of soft materials, such as silicone or rubber.

[0047] Example 2

[0048] like Figure 14-19As shown, the present embodiment is a cobalt-chromium-nickel-tungsten bone needle device with a drilling function, which is a further improvement on the basis of Example 1, specifically as follows: a first cutting edge groove 18 is formed on the first inclined plane 1 along the length direction of the second cutting edge 6, and the structure of the first cutting edge groove 18 is not specifically limited, and the preferred cross-section is semicircular or arc-shaped; a first elongated straight surface 19 is formed between a groove edge of the first cutting edge groove 18 and the second cutting edge 6, and the width of the first elongated straight surface 19 is 0.02-0.1mm, preferably 0.03mm.

[0049] In one embodiment, a second cutting edge groove 20 is formed on the second inclined plane 2 along the length direction of the first cutting edge 5, and the structure of the second cutting edge groove 20 is not specifically limited, and the cross-section is preferably semicircular or arc-shaped; a second elongated straight surface 21 is formed between the groove edge of the second cutting edge groove 20 and the first cutting edge 5, and the width of the second elongated straight surface 21 is 0.02-0.1mm, preferably 0.03mm.

[0050] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A cobalt-chromium-tungsten-nickel bone needle device with drilling function, characterized in that: The bone needle body comprises a bone needle body, one end of which forms a drilling head, and the drilling head is formed with a first inclined plane and a second inclined plane arranged opposite to each other; a first blade face and a second blade face intersecting at the end of the drilling head are formed on the side surface between the first inclined plane and the second inclined plane, the first blade face intersects with the first inclined plane and the second inclined plane, and the first blade face intersects with the second inclined plane or the first inclined plane to form a first cutting edge, the second blade face intersects with the first inclined plane and the second inclined plane, and the second blade face intersects with the first inclined plane or the second inclined plane to form a second cutting edge. cutting edge; a third inclined plane and a fourth inclined plane are formed on the side surface between the first inclined plane and the second inclined plane, and the angle between the third inclined plane and the fourth inclined plane is 0.3-1 degree; it also includes a third blade face and a fourth blade face respectively intersecting with the first blade face and the second blade face, the third blade face also intersects with the first inclined plane and the third inclined plane, and the third blade face intersects with the third inclined plane to form a first auxiliary cutting edge, the fourth blade face intersects with the second inclined plane and the fourth inclined plane, and the fourth blade face intersects with the fourth inclined plane to form a second auxiliary cutting edge.

2. The cobalt-chromium-tungsten-nickel bone needle device with drilling function according to claim 1 is characterized in that: The first auxiliary cutting edge is connected to the first cutting edge, and the second auxiliary cutting edge is connected to the second cutting edge.

3. The cobalt-chromium-tungsten-nickel bone needle device with drilling function according to claim 1, characterized in that: The angle between the first cutting edge and the intersection line of the second blade surface and the second inclined plane is 60-80 degrees; the angle between the second cutting edge and the intersection line of the first blade surface and the first inclined plane is 60-80 degrees.

4. The cobalt-chromium-tungsten-nickel bone needle device with drilling function according to claim 1, characterized in that: The included angle between the first inclined plane and the second inclined plane is 5-20 degrees.

5. The cobalt-chromium-tungsten-nickel bone needle device with drilling function according to claim 1, characterized in that: The included angle between the first blade surface and the second inclined plane is 70-85 degrees; the included angle between the second blade surface and the first inclined plane is 70-85 degrees.

6. The cobalt-chromium-tungsten-nickel bone needle device with drilling function according to claim 1, characterized in that: It also includes a head protection cap matched with the drilling head; the first inclined plane and the second inclined plane are formed with oppositely arranged fixing grooves, and the inner wall of the head protection cap is formed with a fixing head matched with the protection grooves.

7. The cobalt-chromium-tungsten-nickel bone needle device with drilling function according to claim 1, characterized in that: It also includes a tail protection cap matched with the tail end of the bone needle body, and the inner wall of the tail protection cap forms multiple circles of inner grooves.

8. The cobalt-chromium-tungsten-nickel bone needle device with drilling function according to claims 1-8, characterized in that: A first cutting edge groove is formed on the first inclined plane along the length direction of the second cutting edge, and a first long straight surface is formed between the groove edge of the first cutting edge groove and the second cutting edge, and the width of the first long straight surface is 0.02-0.1mm.

9. The cobalt-chromium-tungsten-nickel bone needle device with drilling function according to claims 1-8, characterized in that: A second cutting edge groove is formed on the second inclined plane along the length direction of the first cutting edge, and a second elongated straight surface is formed between the groove edge of the second cutting edge groove and the first cutting edge, and the width of the second elongated straight surface is 0.02-0.1mm.

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