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

Abstract

The utility model discloses a cobalt-chromium-tungsten-nickel spicule device with a drilling function, which comprises a spicule main body, a drilling head is formed at one end part of the spicule main body, a third knife face and a third inclined plane intersect to form a first auxiliary cutting edge, and a fourth knife 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 utility model relates to medical instrument technical field, concretely relates to a cobalt chromium tungsten nickel bone needle device with drilling function. BACKGROUND

[0002] Metal bone needle is a kind of internal fixation instrument for treating fracture, which is made of metal material, and the metal material has greater strength and toughness, and strong bending and torsion resistance, and belongs to biological inert material, and the combination with bone is a kind of mechanical lock.

[0003] With the application of mechanical engineering in medical field deepening increasingly, using bone needle to carry out corresponding drilling has become a conventional technical means in bone surgery, but the problem of drilling temperature being too high caused by it needs to be further solved, because the tissue around bone drilling is heated to higher than 50 degrees of temperature critical point and will cause bone cell necrosis, for this, researchers find that cobalt chromium tungsten nickel alloy has very high ductility and strength, and bone needle made of cobalt chromium tungsten nickel alloy can satisfy more operation requirements, and the cutting edge design of head or blade part has high cutting property, effectively reduces friction and reduces drilling temperature, effectively protects the bone tissue around drilling. The blade part structure of the bone needle prepared using cobalt chromium tungsten nickel alloy is generally flat blade, taper blade or thread blade, or some simple improved structure of the above structure, but after the blade part drilling of the above structure, in view of the special composition of bone, the bone hole side wall has more redundant bone, which influences the subsequent operation effect. SUMMARY

[0004] The utility model provides a cobalt -chrome -tungsten nickel bone needle device with drilling function, including bone needle main part, the one end of bone needle main part forms the drilling head, forms the first inclined plane and the second inclined plane of opposite arrangement on the drilling head, the first inclined plane and the second inclined plane extend to the end of drilling head, and the extension plane of both in the drilling head outside intersects, forms the first tool face and the second tool face of the intersection in the end of drilling head on the side between the first inclined plane and the second inclined plane, the first tool face with the first inclined plane and the second inclined plane intersect, and the first tool face with the second inclined plane or the first inclined plane intersect and form first cutting edge, the second tool face with the first inclined plane and the second inclined plane intersect, and the second tool face with the first inclined plane or second inclined plane intersect and form second cutting edge, still form the third inclined plane and the fourth inclined plane on the side between the first inclined plane and the second inclined plane, the included angle between the third inclined plane and the fourth inclined plane is 0.3-1 degree, still include the third tool face and the fourth tool face with the first tool face and the second tool face intersect respectively, the third tool face still with the first inclined plane and the third inclined plane intersect, and the third tool face with the third inclined plane intersect and form first auxiliary cutting edge, the fourth tool face with the second inclined plane and the fourth inclined plane intersect, and the fourth tool face with the fourth inclined plane intersect and form second auxiliary cutting edge, through the first auxiliary cutting edge and the second auxiliary cutting edge of forming in the rear of cutting edge, simultaneously, the first auxiliary cutting edge and the second auxiliary cutting edge form on the third inclined plane and the fourth inclined plane, and the included angle between the third inclined plane and the fourth inclined plane is 0.3-1 degree, close to parallel, but not parallel, make the rotation cutting track of first auxiliary cutting edge and the second auxiliary cutting edge is close to the circular platform structure of cylinder, make first auxiliary cutting edge and second auxiliary cutting edge follow the rotation cutting advancement after cutting edge rotation advancement, plus its rotation cutting track, can realize secondary cutting well, and can cut the redundant bone of bone hole side wall clean in the maximum range, improve the follow -up operation effect, the first inclined plane and the second inclined plane structure form the bone chip temporary storage area in the above structure.

[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 arrangement, the minimum range of the rotation cutting track of the auxiliary cutting edge is the maximum range of the cutting edge, which can cut the excess bone after the first cutting to the maximum extent. Further, the cutting edge and the auxiliary cutting edge form a V-shaped structure. In the cutting process, the cut bone is blocked by the V-shaped structure and enters the space between the inclined plane and the bone hole wall along the inclined tool face, 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 between the second rake face and the second bevel plane is 60-80 degrees; the angle between the second cutting edge and the intersection line between the first rake face and the first bevel plane is 60-80 degrees.

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

[0008] In one embodiment, the included angle between the first rake face and the second bevel plane is 70-85 degrees; the included angle between the second rake face and the first bevel plane is 70-85 degrees.

[0009] In one embodiment, the included angle between the third rake face and the first bevel plane is 95-110 degrees; the included angle between the fourth rake face and the second bevel plane is 95-110 degrees; the included angle between the third rake face and the third bevel plane is 165-175 degrees, and the included angle between the fourth rake face and the fourth bevel plane is 165-175 degrees.

[0010] In one embodiment, a head protection cap is further included, which is adapted to the drill head; opposite fixed grooves are formed on the first bevel plane and the second bevel plane, and the inner wall of the head protection cap is formed with fixed heads adapted to the protection grooves. By setting the fixed groove and fixed head structure, the head protection cap can be prevented from falling off by itself.

[0011] In one embodiment, a tail protection cap is further included, which is adapted to the tail end of the bone needle body, and the inner wall of the tail protection cap is formed with multiple inner grooves. By forming the multiple inner groove structure, the tail protection cap can be prevented from falling off.

[0012] In one embodiment, a first edge opening belt groove is formed on the first bevel plane along the length direction of the second cutting edge, and a first long strip-shaped straight face is formed between the groove edge of the first edge opening belt groove and the second cutting edge, with a width of 0.02-0.1 mm.

[0013] In one embodiment, a second edge opening belt groove is formed on the second bevel plane along the length direction of the first cutting edge, and a second long strip-shaped straight face is formed between the groove edge of the second edge opening belt groove and the first cutting edge, with a width of 0.02-0.1 mm.

[0014] By designing the blade slot structure, in the cutting process, the bone scraps can form a guide flow, so that the cutting is more smooth, and the effect is better! Further, the long strip straight face structure is formed, the small acute angle structure of the cutting edge is avoided, in the cutting process, the collapse is caused, the structure with certain thickness is formed, the strength of the cutting edge is guaranteed, and the service life and the cutting effect are guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the specific embodiment of the utility model, the drawings needed to be used in the specific embodiment will be simply introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0016] Figure 1 It is the front view of the bone needle body of the utility model;

[0017] Figure 2 It is Figure 1 the enlarged view of A in Fig.

[0018] Figure 3 It is the back view of the bone needle body of the utility model;

[0019] Figure 4 It is Figure 3 the enlarged view of B in Fig.

[0020] Figure 5 It is the left view of the bone needle body of the utility model;

[0021] Figure 6 It is Figure 5 the enlarged view of Fig.

[0022] Figure 7 It is the top view of the bone needle body of the utility model;

[0023] Figure 8 It is Figure 7 the enlarged view of C in Fig.

[0024] Figure 9 It is the bottom view of the bone needle body of the utility model;

[0025] Figure 10 It is Figure 9 the enlarged view of D in Fig.

[0026] Figure 11 It is the perspective view of the bone needle body of the utility model;

[0027] Figure 12 It is Figure 11 the enlarged view of E in Fig.

[0028] Figure 13 is a structure schematic view of the cobalt-chromium-tungsten-nickel bone needle device with a drilling function of the utility model;

[0029] Figure 14 is a front view of another bone needle body of the utility model;

[0030] Figure 15 is Figure 14 an enlarged view of F in the figure;

[0031] Figure 16 is a back view of another bone needle body of the utility model;

[0032] Figure 17 is Figure 16 an enlarged view of G in the figure;

[0033] Figure 18 is a perspective view of another bone needle body of the utility model;

[0034] Figure 19 is Figure 18 an enlarged view of H in the figure;

[0035] The figure mark represents: 1-first inclined plane; 2-second inclined plane; 3-first tool face; 4-second tool face; 5-first cutting edge; 6-second cutting edge; 7-third inclined plane; 8-fourth inclined plane; 9-third tool face; 10-fourth tool face; 11-first auxiliary cutting edge; 12-second auxiliary cutting edge; 13-head protection cap; 14-fixing groove; 15-fixing head; 16-tail protection cap; 17-inner groove; 18-first blade opening groove; 19-first long strip straight face; 20-second blade opening groove; 21-second long strip straight face. DETAILED DESCRIPTION

[0036] The content of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. In the embodiment in the utility model, other embodiments obtained by the person skilled in the art without making creative labor all belong to the scope of protection of the utility model.

[0037] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model.

[0038] In the description of the utility model, it is necessary to explain, unless there is definite provision and limitation, the term "installation", "linkage", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.

[0040] Example 1

[0041] As Figures 1-13As shown, the embodiment discloses a cobalt-chromium-nickel-tungsten bone needle device with drilling function, which comprises a bone needle body, the bone needle body is generally long strip-shaped, mainly taking cylinder as the main body, and is processed at the corresponding position, one end of which forms a drilling head, and the other end forms a drilling force applying end; the drilling head is formed with oppositely arranged first inclined plane 1 and second inclined plane 2, and two oppositely arranged and symmetrical inclined planes are formed at the drilling head position during processing, the intersection line of the two inclined planes or the intersection line of the extension plane of the two inclined planes outside the bone needle body is perpendicular to the central axis of the bone needle body, the first inclined plane 1 and the second inclined plane 2 are respectively a part of the two inclined planes, and the included angle between the two is 5-20 degrees, preferably 10 degrees; the first tool face 3 and the second tool face 4 are formed on the side surface between the first inclined plane 1 and the second inclined plane 2 compared with the end part of the drilling head, the first tool face 3 and the second tool face 4 are planes, the first tool face 3 intersects with the first inclined plane 1 and the second inclined plane 2, and the first tool face 3 intersects with the second inclined plane 2 or the first inclined plane 1 to form a first cutting edge 5, preferably, the first tool face 3 intersects with the second inclined plane 2 to form a first cutting edge 5, more specifically, the included angle between the first tool face 3 and the second inclined plane 2 is 70-85 degrees, preferably 80 degrees, the second tool face 4 intersects with the first inclined plane 1 and the second inclined plane 2, and the second tool face 4 intersects with the second inclined plane 2 or the first inclined plane 1 to form a second cutting edge 6, preferably, the second tool face 4 intersects with the first inclined plane 1 to form a first cutting edge 6, more specifically, the included angle between the second tool face 4 and the first inclined plane 1 is 70-85 degrees, preferably 80 degrees; oppositely arranged third inclined plane 7 and fourth inclined plane 8 are further formed on the side surface between the first inclined plane 1 and the second inclined plane 2, and 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 during processing, the intersection line of the extension plane of the two inclined planes 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 a part of the two inclined planes, and the included angle between the two is 0.3-1 degree, preferably 0.6 degrees; and further comprising a third tool face 9 and a fourth tool face 10 intersecting the first tool face 3 and the second tool face 4 respectively, the third tool face 9 further intersects the first inclined plane 1 and the third inclined plane 7, and the third tool face 9 intersects the third inclined plane 7 to form a first auxiliary cutting edge 11, in particular, the included angle between the third tool face 9 and the first inclined plane 1 is 95-110 degrees, preferably 100 degrees, and the included angle between the third tool face 9 and the third inclined plane 7 is 165-175 degrees, preferably 170 degrees, the fourth tool face 10 further intersects the second inclined plane 2 and the fourth inclined plane 8, and the fourth tool face 10 intersects the fourth inclined plane 8 to form a second auxiliary cutting edge 12, in particular, the included angle between the fourth tool face 10 and the second inclined plane 2 is 95-110 degrees, preferably 100 degrees, and the included angle between the fourth tool face 10 and the fourth inclined plane 8 is 165-175 degrees, preferably 170 degrees.

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

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

[0044] In an embodiment, a head protection cap 13 matched with the drill head is further included, the first inclined plane 1 and the second inclined plane 2 form oppositely arranged fixed grooves 14, and in cooperation therewith, fixed heads 15 matched with the fixed grooves 14 are formed on the inner wall of the head protection cap 13, and the structure of the fixed grooves 14 and the fixed heads 15 is not limited, and preferably, the fixed grooves 14 and the fixed heads 15 are arranged in semicircular shapes, and when fixed, the fixed heads 15 are clamped into the fixed grooves 14.

[0045] In an embodiment, a tail protection cap 16 matched with the tail end (force applying end) of the bone needle body is further included, and a plurality of inner grooves 17 are formed on the inner wall of the tail protection cap 16. The cross section of the inner grooves 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 silica gel or rubber, etc.

[0047] Example 2

[0048] As Figures 14-19As shown, the cobalt-chromium-nickel-tungsten bone needle device with a drilling function in the embodiment is a further improvement on the basis of the embodiment 1, and specifically as follows: a first blade slot 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 blade slot 18 is not limited, and the cross section is preferably semicircular or arc-shaped; a first long strip-shaped straight surface 19 is formed between a slot edge of the first blade slot 18 and the second cutting edge 6, and the width of the first long strip-shaped straight surface 19 is 0.02-0.1 mm, and preferably 0.03 mm.

[0049] In an embodiment, a second blade slot 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 blade slot 20 is not limited, and the cross section is preferably semicircular or arc-shaped; a second long strip-shaped straight surface 21 is formed between a slot edge of the second blade slot 20 and the first cutting edge 5, and the width of the second long strip-shaped straight surface 21 is 0.02-0.1 mm, and preferably 0.03 mm.

[0050] Obviously, the above embodiments are only examples for clearly illustrating, and are not limited to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments do not need to be exhausted, and the obvious changes or variations still fall within the protection scope of the present application.

Claims

1. A cobalt-chromium-tungsten-nickel bone pin device with a drilling function, characterized by, The bone needle comprises a bone needle body, one end of the bone needle body forms a drill head, the drill head is provided with oppositely arranged first and second inclined planes, first and second rake faces are formed on the side surface between the first and second inclined planes and intersect the end of the drill head, the first rake face intersects the first and second inclined planes, and the first rake face intersects the second inclined plane or the first inclined plane to form a first cutting edge, the second rake face intersects the first and second inclined planes, and the second rake face intersects the first inclined plane or the second inclined plane to form a second cutting edge, oppositely arranged third and fourth inclined planes are further formed on the side surface between the first and second inclined planes, the included angle between the third and fourth inclined planes is 0.3-1 degrees, and third and fourth rake faces are further formed and intersect the first and second rake faces respectively, the third rake face further intersects the first inclined plane and the third inclined plane, and the third rake face intersects the third inclined plane to form a first auxiliary cutting edge, the fourth rake face intersects the second inclined plane and the fourth inclined plane, and the fourth rake face intersects the fourth inclined plane to form a second auxiliary cutting edge.

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

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

4. The cobalt-chromium-tungsten-nickel bone pin device with a 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-chrome-tungsten-nickel bone pin device with a drilling function according to claim 1, characterized in that, The included angle between the first rake face and the second inclined plane is 70-85 degrees, and the included angle between the second rake face and the first inclined plane is 70-85 degrees.

6. The cobalt-chrome-tungsten-nickel bone pin device with a drilling function according to claim 1, characterized in that, A head protection cap matched with the drill head is further included, fixed grooves are formed on the first and second inclined planes, and the inner wall of the head protection cap is provided with fixed heads matched with the fixed grooves.

7. The cobalt-chrome-tungsten-nickel bone pin device with a drilling function according to claim 1, characterized in that, A tail protection cap matched with the tail end of the bone needle body is further included, and a plurality of inner grooves are formed on the inner wall of the tail protection cap.

8. The cobalt-chromium-tungsten-nickel bone pin device with a drilling function according to claims 1-7, characterized in that, A first blade edge groove is formed on the first inclined plane along the length direction of the second cutting edge, a first long strip-shaped straight surface is formed between the groove edge of the first blade edge groove and the second cutting edge, and the width of the first long strip-shaped straight surface is 0.02-0.1 mm.

9. The cobalt-chromium-tungsten-nickel bone pin device with a drilling function according to claims 1-7, characterized in that, A second blade edge groove is formed on the second inclined plane along the length direction of the first cutting edge, a second long strip-shaped straight surface is formed between the groove edge of the second blade edge groove and the first cutting edge, and the width of the second long strip-shaped straight surface is 0.02-0.1 mm.

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