TWI426885B - Bone screw and bone plate apparatus with multiple screwing directions and a positioning adjustment ring thereof - Google Patents

Description

Multi-directional locking type bone nail plate device and positioning adjustment ring thereof

The invention relates to a bone nail plate device and a positioning adjusting ring thereof, in particular to a multi-directional type locking bone nail plate device and a positioning adjusting ring thereof for a stable fixed position fracture.

Please refer to FIG. 1 , which is a new patent of the universal joint plate No. M374840 of the Republic of China, which discloses a conventional bone nail plate device 9 comprising a body 91, a valve ball 92 and a bone nail 93. The body 91 is provided with a plurality of holes 911. A screw hole 921 is defined in the center of the valve ball 92, and a side of the valve ball 92 has a slit 922. The valve ball 92 can be sleeved in the hole 911 of the body 91. The outer periphery of the nail 93 is provided with a thread 931 which can be screwed with the screw hole 921 of the valve ball 92.

When the bone nail plate device 9 is in use, the body 91 is placed at the fracture, and the valve ball 92 is placed in the hole 911, and the screw pin 93 is screwed to the screw hole of the valve ball 92. During the process of 921, the nail 93 can open the crack 922 of the valve ball 92. The inner peripheral wall of the hole 911 is a spherical hole, forcing the outer peripheral wall of the valve ball 92 to abut against the inner peripheral wall of the hole 911. Thereby, the body 91 can be fixed to the fracture.

In general, the above-mentioned conventional bone nail plate device 9 mainly opens the crack 922 on one side of the valve ball 92, and cooperates with the bone nail 93 to force the valve ball 92 to expand radially, so that the valve ball 92 cannot be It comes out of the hole 911. However, with the design of the valve ball 92, opening a single slit 922 only on one side of the valve ball 92 results in a relatively limited size of the radial expansion of the valve ball 92. In other words, since the valve ball 92 cannot be fully radially expanded, the outer peripheral wall of the valve ball 92 cannot be closely abutted against the inner peripheral wall of the hole 911, and the coupling effect between the body 91 and the valve ball 92 is relatively affected. Further, the conventional bone nail plate device 9 is easily loosened and affects the healing of the fracture site. Moreover, since the valve ball 92 is connected to the hole 911 and has a circular arc surface, so that the bone nail 93 has not been connected to the valve ball 92, the valve ball 92 will rotate in the hole 911, resulting in the bone nail 93 planting. Entering difficulties. For the above reasons, the conventional bone nail plate device 9 is still necessary for further improvement.

The object of the present invention is to solve the shortcomings of the prior art to provide a multi-directional locking type bone nail plate device, which can stably fix the bone plate at the fracture to improve the healing of the wound.

Another object of the present invention is to provide a positioning adjustment ring that can be firmly coupled to a bone plate.

In order to achieve the foregoing object, the technical content of the present invention includes: a multi-directional locking type bone nail plate device comprising: a body having a coupling hole; and a positioning adjustment ring disposed in the coupling hole The positioning adjustment ring has a screwing portion, and the positioning adjustment ring includes a first adjusting member and a second adjusting member, and one end of the first adjusting member and the second adjusting member are connected to each other; and a bone nail, There is an adjusting portion that is coupled to the screwing portion of the positioning adjusting ring.

In addition, the positioning adjustment ring of the multi-directional locking type bone nail plate device of the present invention comprises: a first adjusting member having a first connecting end and a first screwing portion; and a second adjusting member, The second connecting end and the second connecting end are connected to the first connecting end, and the second screwing portion and the first screwing portion together form a screwing portion.

The outer side of the positioning adjustment ring of the multi-directional locking type bone nail plate device of the present invention has a joint surface, and the joint surface forms a corresponding arc surface with the inner wall surface of the joint hole. Thereby, the positioning adjustment ring can be tilted relative to the coupling hole, so that the operator can have more choices in the position and direction of the nail insertion.

The above and other objects, features and advantages of the present invention will become more <RTIgt; <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The multi-directional locking type bone nail plate device of the preferred embodiment of the present invention comprises a body 1, a positioning adjustment ring 2 and a bone nail 3, and the bone nail 3 can be used for positioning the adjustment ring 2 Combined with the body 1.

The body 1 can be selected as bone plates of various geometric shapes according to the needs of use, and the main principle is to be able to match the contour of the fracture. The body 1 has at least one coupling hole 11 for the positioning adjustment ring 2 to be coupled, and the inner wall surface 111 of the coupling hole 11 can be designed as a curved surface with appropriate curvature, which is mainly used for the positioning. The adjustment ring 2 is tilted relative to the coupling hole 11 to make the positioning adjustment ring 2 inclined with respect to the body 1; in the embodiment, the number of the coupling holes 11 is selected as one for explanation, and the inner wall surface 111 is selected. Then choose to form a concave curved surface. In addition, in order to facilitate the description of the tilting operation of the positioning adjusting ring 2 relative to the body 1, the embodiment defines a first axis (L1) at a center position of the coupling hole 11.

The central position of the positioning adjustment ring 2 can define a second axis (L2), and the second axis (L2) can overlap with the first axis (L1) when the positioning adjustment ring 2 has not been tilted. [As shown in Figure 3]. The positioning adjustment ring 2 is composed of a first adjusting member 21 and a second adjusting member 22. The first and second adjusting members 21 and 22 are substantially semi-circular, and the first and second adjusting members 21 are 21 One end of the first and second adjusting members 21, 22 can be connected or not connected according to the use requirement; in the embodiment, the first and second adjusting members 21, 22 The two are connected to each other only by one end.

In more detail, one end of the first adjusting member 21 is a first connecting end 211, and one end of the second adjusting member 22 is a second connecting end 221, and the first connecting end 211 is connected to the first connecting end 211. The second connecting end 221 is configured such that one end of the first and second adjusting members 21, 22 is not connected to form a gap 23. It should be noted that the design of the connection between the first and second connecting ends 211 and 221 is mainly to apply an appropriate external force on the inner wall surface of the positioning adjusting ring 2, so that the positioning adjusting ring 2 is required to be in the diameter. When expanding (the radial direction means a direction perpendicular to the second axis (L2)], the first and second connecting ends 211, 221 may be forced out of a connection relationship to relatively amplify the positioning adjustment member 2 in a radial direction. The extent of the expansion, whereby the positioning adjustment ring 2 can be stably fixed in the coupling hole 11. For example, the first and second connecting ends 211, 221 may be bonded or snapped together, or the first and second adjusting members 21 may be connected by a connecting member 24 as shown in FIG. ,twenty two.

In addition, the inner wall surface of the positioning adjustment ring 2 is a threaded portion (S) having a thread, and the outer circumferential surface of the positioning adjustment ring 2 forms a joint surface (F) of suitable curvature; wherein the screwing portion ( S) is for the bone nail 3 to be screwed, and the joint surface (F) can be attached to the inner wall surface 111 of the joint hole 11. More specifically, in the embodiment, a first screwing portion 212 is formed on the inner side of the first adjusting member 21, and a first joint surface 213 is formed on the outer side of the first adjusting member 21; A second screwing portion 222 is formed on the inner side of the adjusting member 22, and a second joint surface 223 is formed on the outer side of the second adjusting member 22. Therefore, the first and second connecting ends 211 and 221 are connected to each other such that the threads of the first and second screwing portions 212 and 222 are aligned with each other to jointly form the screwing portion (S). At the same time, the arc faces of the first and second bonding faces 213, 223 may be aligned with each other to jointly form the bonding face (F). Moreover, if necessary, the opposite ends of the first and second adjusting members 21, 22 can be selectively connected to each other to further ensure the first and second screwing portions 212, 222, and the first The second bonding faces 213, 223 can be accurately aligned.

More importantly, according to the drawings of Figures 2 and 3, the screwing portion (S) of the embodiment is inclined from the top to the bottom, so that the inner diameter of the positioning adjustment ring 2 gradually increases from top to bottom. Zoom out. In addition, the bonding surface (F) of the embodiment is selected as a circular arc surface, and the curvature of the circular arc surface corresponds to the curvature of the inner wall surface 111 of the coupling hole 11 so as to be surrounded by the circular arc surface and the concave arc surface. The design makes the positioning adjustment ring 2 easier to tilt.

The bone nail 3 can be used to force the positioning adjustment ring 2 to radially expand, so that the positioning adjustment ring 2 is stably fixed in the coupling hole 11 of the body 1, and the bone nail 3 can be locked to the bone, thereby the body 1 Position at the wound 8 [as shown in Figure 8]. More specifically, the nail 3 has an adjusting portion 31 and a locking portion 32, which can be used to force the positioning adjusting ring 2 to expand radially, and the locking portion 32 can be used to lock bone. In this embodiment, the adjusting portion 31 is formed by a slope from top to bottom [in accordance with the drawing], and the outer diameter of the adjusting portion 31 is gradually reduced from top to bottom; wherein the adjusting portion 31 is The threaded portion 311 has a threaded portion 311 which is screwed to the screwing portion (S) of the positioning adjustment ring 2 which also forms a slope.

Furthermore, the end of the bone nail 3 can also be provided with a coupling groove 33, and the coupling groove 33 is adjacent to the adjusting portion 31. Thereby, the coupling groove 33 can be combined with a suitable tool for screwing the nail 3 into the positioning adjustment ring 2 and the bone by the tool.

Referring to Figures 3, 4 and 8, the multi-directional locking bone plate device of the present invention can be used to insert the positioning adjustment ring 2 into the coupling hole 11 of the body 1 and use the same. After the body 1 is placed in the proper position of the injury portion 8, the locking portion 32 of the bone nail 3 is passed through the positioning adjustment ring 2, so that the adjustment portion 31 of the bone nail 3 can be located on the positioning adjustment ring 2 Screw joint (S).

As shown in FIG. 5 , since the inner wall surface 111 of the coupling hole 11 and the joint surface (F) of the positioning adjustment ring 2 form a corresponding curved surface, the positioning adjustment ring 2 can be inclined relative to the coupling hole 11 The action is such that an angle (θ) can be formed between the first axis (L1) and the second axis (L2). Thereby, the locking portion 32 of the bone nail 3 can be easily screwed into the bone at an angle of the bone, so that the operator can have more choices in the position and direction of the nail insertion.

Referring to Figures 6, 7, and 8, the adjustment portion 31 of the nail 3 and the screw portion (S) of the positioning adjustment ring 2 form a slope corresponding thereto, so that the nail 3 is locked. In the process of screwing in the direction of the bone 32, the adjusting portion 31 can force the positioning adjusting ring 2 to expand radially, so that the joint surface (F) of the positioning adjusting ring 2 can be adhered to the inner wall surface of the coupling hole 11. The joint surface (F) of the positioning adjustment ring 2 and the inner wall surface 111 of the coupling hole 11 may be rough surfaces, thereby increasing the surface friction force to prevent the positioning adjustment ring 2 when the bone nail 3 is implanted. Rotating in the joint hole 11 to relatively increase the joint strength between the bone plate and the nail. More importantly, after the locking portion 32 of the bone nail 3 is deep into the bone to a predetermined depth, the adjusting portion 31 can force the first and second connecting ends 211 and 221 to be separated from each other, thereby relatively amplifying the positioning adjustment. The amplitude of the radial expansion of the ring 2; in other words, in the present embodiment, when the positioning adjustment ring 2 is radially expanded to a predetermined size, the engagement member 24 can be forced to break (as shown in Fig. 7), so that The first and second adjustment members 21, 22 are disconnected from the connected state. Therefore, when the bone nail 3 is continuously screwed in the direction of the bone, the adjusting portion 31 can effectively push the first and second adjusting members 21 and 22, so that the first and second joining surfaces 213 and 223 can be further The inner wall surface 111 of the joint hole 11 is firmly fixed, so that the body 1 is stably fixed at the wound portion 8, which helps to increase the healing rate of the fracture portion, thereby shortening the time for the patient to recover.

The main technical feature of the multi-directional locking type bone nail plate device of the present invention is that the first and second adjusting members 21 and 22 are pre-connected by the first and second connecting ends 211 and 221 to make the bone nail 3 The adjusting portion 31 can be accurately screwed to the screwing portion (S); during the screwing of the adjusting portion 31 to the screwing portion (S), the bone nail 3 can gradually force the positioning adjusting ring 2 to be radially The expansion and the first and second adjustment members 21, 22 are forced out of the connected state. Therefore, the amplitude of the radial expansion of the positioning adjustment ring 2 can be greatly increased, so that the first and second adjustment members 21, 22 can be firmly coupled into the coupling hole 11 of the body 1, so that the body 1 can be stably fixed. Located at the wound 8 to effectively improve the healing of the wound 8 .

The positioning adjustment ring of the present invention is configured by the positioning adjustment ring 2 formed by the first and second adjusting members 21 and 22, and the design of the first and second connecting ends 211 and 221 is properly applied to the positioning adjusting ring 2 After the force is applied, the first and second connecting ends 211 and 221 are forced to be separated from each other, thereby relatively amplifying the radial expansion of the positioning adjusting ring 2, so that the positioning adjusting ring 2 can effectively achieve the stable coupling. The effect of the body 1.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

[this invention]

1. . . Ontology

11. . . Bonding hole

111. . . Inner wall

2. . . Positioning adjustment ring

twenty one. . . First adjustment

211. . . First connection

212. . . First screw

213. . . First joint surface

twenty two. . . Second adjustment piece

221. . . Second connection

222. . . Second screwing

223. . . Second joint

twenty three. . . gap

twenty four. . . Connection piece

3. . . Bone nail

31‧‧‧Adjustment Department

311‧‧ Thread Department

32‧‧‧Locking Department

33‧‧‧ joint slot

F‧‧‧ joint surface

L1‧‧‧first axis

L2‧‧‧second axis

S‧‧‧ screwing department

8‧‧‧Injury

[study]

9‧‧‧ bone nail plate device

91‧‧‧Ontology

911‧‧ hole

92‧‧‧Valve ball

921‧‧‧ screw holes

922‧‧‧ crack

93‧‧‧ bone nails

931‧‧‧ thread

Figure 1: Schematic of the Republic of China Announcement No. M374840 "Universal Bone Plate".

Fig. 2 is an exploded perspective view showing the multidirectional locking type bone nail plate device of the preferred embodiment of the present invention.

Figure 3 is a cross-sectional view showing the combination of the multidirectional locking type bone nail plate device of the preferred embodiment of the present invention.

Figure 4: A cross-sectional view taken along line 4-4 of Figure 3.

Fig. 5 is a view showing the use of a multidirectional locking type bone nail plate device according to a preferred embodiment of the present invention (1).

Fig. 6 is a view showing the use of the multidirectional locking type bone nail plate device of the preferred embodiment of the present invention (2).

Figure 7: A cross-sectional view taken along line 7-7 of Figure 6.

Figure 8 is a schematic view showing the multi-directional locking type bone nail plate device of the preferred embodiment of the present invention fixed to the wound.

1. . . Ontology

11. . . Bonding hole

111. . . Inner wall

2. . . Positioning adjustment ring

twenty one. . . First adjustment

211. . . First connection

212. . . First screw

213. . . First joint surface

twenty two. . . Second adjustment piece

221. . . Second connection

222. . . Second screwing

223. . . Second joint

twenty three. . . gap

twenty four. . . Connection piece

3. . . Bone nail

31. . . Adjustment department

311. . . Thread part

32. . . Locking part

33. . . Combined slot

F. . . Joint surface

L1. . . First axis

L2. . . Second axis

S. . . Screwing part

Claims (8)

A multi-directional locking type bone nail plate device comprises: a body having a coupling hole; a positioning adjustment ring disposed on the coupling hole, the positioning adjustment ring has a screwing portion, and the positioning adjustment ring comprises a first adjusting member and a second adjusting member, wherein one end of the first adjusting member and the second adjusting member are connected to each other by a connecting member; and a bone nail has an adjusting portion, and the adjusting portion is combined with the positioning adjustment The screwing portion of the ring is configured to force the positioning adjusting ring to radially expand, so that the engaging members of the one end of the first adjusting member and the second adjusting member are disconnected from the connecting state. The multi-directional locking type bone nail plate device according to claim 1, wherein the other ends of the first adjusting member and the second adjusting member are also connected to each other. The multi-directional locking type bone nail plate device according to claim 1 or 2, wherein the inner wall surface of the coupling hole is a concave arc surface, and the joint surface of the positioning adjustment ring is corresponding to the concave arc The arc surface of the surface, and the joint surface of the inner wall surface of the joint hole and the positioning adjustment ring are rough surfaces. The multi-directional locking type bone nail plate device according to claim 1 or 2, wherein the screwing portion of the positioning adjustment ring and the adjustment portion of the bone nail form a slope. A positioning adjustment ring for a multi-directional locking type bone nail plate device, comprising: a first adjusting end having a first connecting end and a first screwing portion; and a second adjusting member having a second connecting end and a second screwing portion, wherein the second connecting end is connected to the first connecting end a connecting end, the second screwing portion and the first screwing portion together form a screwing portion; wherein the first connecting end and the second connecting end are connected to each other by a connecting member, and the connecting member is adjusted at the positioning When the ring is forced to expand radially, it can be disconnected. The positioning adjustment ring of the multi-directional locking type bone nail plate device according to the fifth aspect of the patent application, wherein the outer side of the positioning adjustment ring forms a circular arc surface, and the circular arc surface is a rough surface. The positioning adjustment ring of the multi-directional locking type bone nail plate device according to claim 5, wherein the screwing portion forms a slope. The positioning adjustment ring of the multi-directional locking type bone nail plate device according to the fifth, sixth or seventh aspect of the patent application, wherein the opposite ends of the first adjusting member and the second adjusting member are connected to each other.