TWM546206U - Interlocked bone plate positioning device - Google Patents

Description

Interlocking bone plate positioning device

This creation is about an orthopaedic medical device; in particular, an interlocking bone plate positioning device for treating fractures.

Osteoporosis, car accidents or accidents caused by work accidents, etc., are partly displaced fractures. Traditional surgery is to restore the affected part of the fracture, and then fix the external bone plate and bone screws to engage the bone by the bone screw. The force, and the friction between the outer bone plate and the bone, secures the outer bone plate to one side of the bone. Among them, in order to enhance the effect of maintaining the positioning of the affected part of the fracture, and avoiding the displacement of the affected part due to the torsion or inadvertent collision, the previous surgical method will transplant the humerus for intramedullary support; the benefit of the iliac bone support in the bone marrow is that the affected part can be improved. The anti-twist and stable support effect can reduce the occurrence of displacement between the affected parts and affect the healing or the failure of the operation.

Although transplanting the tibia does not cause inconvenience to the patient, removal of the tibia is bound to cause another wound, so using an inner bone plate instead of the tibia is another option. In detail, since the metal inner bone plate is difficult to be drilled and positioned by the bone screw, it is necessary to open a corresponding number of keyholes and two positioning holes on the outer bone plate and the inner bone plate during molding so as to be in operation. The positioning rod passes through the two positioning holes, so that the outer bone plate and the inner bone plate are respectively placed in the bone surface and the bone marrow cavity, and the locking hole of the outer bone plate is opposite to the locking hole of the inner bone plate. For the operator to lock the bone screw, the outer bone plate, the inner bone plate and the bone lock are fixed.

However, the outer bone plate and the inner bone plate are both thin plate-shaped, so even with a positioning rod If the two are positioned, the outer bone plate or the inner bone plate may still be deflected, so that the outer bone plate and the inner bone plate are not accurately coaxially opposed, which causes the bone screw to be difficult to be smoothly locked.

In view of this, the conventional interlocking bone plate positioning device does have a need for improvement.

In order to solve the above problems, the present invention provides an interlocking bone plate positioning device, which can stably and surely position the relative positions of the outer bone plate and the inner bone plate, so that the outer bone plate and the inner bone plate are not deflected for fracture reduction surgery. .

The following directional or similar terms, such as "before", "after", "upper (top)", "lower", "inside", "outside", "side", etc. With reference to the orientation of the additional drawings, the directionality or its approximation is only used to assist in the description and understanding of the embodiments of the present invention, and is not intended to limit the present invention.

The interlocking bone plate positioning device of the present invention comprises: an outer bone plate having an outer positioning hole between the at least one first locking hole and the at least one second locking hole; an inner bone plate, the inner bone The board has an inner positioning hole between the at least one first through hole and the at least one second through hole; and a fixing component, the fixing component comprises two clamping pieces, a positioning piece and a positioning strip, and the two clamping pieces are clamped On the two sides of the inner bone plate, the outer bone plate is disposed between the positioning piece and the inner bone plate, the positioning piece is combined with the two clamping pieces and is provided with a through groove, and the positioning strip penetrates and joins the through groove. The positioning hole and the inner positioning hole are arranged such that the first locking hole is opposite to the first through hole, and the second locking hole is aligned in a locking range of the second through hole.

Accordingly, the interlocking bone plate positioning device of the present invention can stably and reliably position the relative positions of the outer bone plate and the inner bone plate by the fixing assembly, so that the outer bone plate and the inner bone plate are not deflected to maintain the outer bone plate. As opposed to the hole in the inner bone plate; thus, in the fracture reduction surgery, even if the hole in the inner bone plate is not visible, the operator can accurately and quickly lock the outer bone plate, the inner bone plate and the bone with the bone screw. To improve the efficiency of surgery and reduce the risk of surgery.

Each of the clamping members is provided with a clamping slot, and the two clamping members are respectively clamped on the two sides of the inner bone plate by the clamping groove; the structure is simple and convenient to manufacture and assemble, and has the advantages of reducing manufacturing cost and improving assembly convenience. efficacy.

Each of the clips is provided with a first joint portion, and the positioning piece is provided with two second joint portions. The through groove is located between the two second joint portions, and the two clamp members are respectively detachable by the first joint portion thereof. The two second joints of the positioning piece are combined; the structure has the effects of improving the bonding stability and the like.

The first joint portion and the second joint portion are both through holes, and the fixing assembly is further provided with two bolts, each of the bolts penetrating through the corresponding second joint portion and the first joint portion; The corresponding second joint portion and the first joint portion can form an indirect joint form by the plug, and achieve the effects of improving the convenience of manufacturing and assembly.

Wherein, the fixing component is attached to the surface of the outer bone plate by a stopper piece, and the stopper piece is connected to one end of the positioning piece; the structure has the functions of improving the operation convenience when the positioning bar and the pin are lifted or removed. .

Wherein, the blocking piece is provided with a notch to expose the first locking hole of the outer bone plate; the structure has the effects of maintaining good operation convenience and the like.

Wherein, the first through hole of the inner bone plate is provided with an internal thread; the structure has the effects of lifting the bone screw to the stable fixing position of the inner bone plate.

1‧‧‧External bone plate

1a‧‧‧ Flat section

1b‧‧‧Surface

11‧‧‧First keyhole

12‧‧‧Second keyhole

13‧‧‧Outer positioning holes

2‧‧‧Inside bone plate

21‧‧‧First through hole

211‧‧‧ internal thread

22‧‧‧Second through hole

23‧‧‧ positioning hole

3‧‧‧Fixed components

31‧‧‧Clamp firmware

311‧‧‧Clamp slot

312‧‧‧ first joint

32‧‧‧ Positioning film

321‧‧‧through slot

322‧‧‧Second junction

33‧‧‧Positioning bar

34‧‧‧Latch

35‧‧‧stop film

351‧‧‧ Missing slot

B1, B2‧‧‧ bones

S‧‧‧ bone screw

Fig. 1 is an exploded perspective view showing an embodiment of the present invention.

Fig. 2 is a schematic view showing the combination of an embodiment of the present invention and having not been inserted into the affected part of the fracture.

Fig. 3 is a schematic view showing the implementation of an embodiment in which a part of the affected part of the fracture is fixed.

Fig. 4 is a schematic view showing the implementation of an embodiment of the present invention completely fixed to the affected part of the fracture.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. In an embodiment of the present invention, the interlocking bone plate positioning device generally comprises an outer bone plate 1, an inner bone plate 2 and a fixing component 3, the outer bone plate 1 and the inner portion The bone plate 2 is connected and fixed by the fixing component 3. The interlocking bone plate positioning device of the present invention can be implemented in any fracture reduction operation of a bone having a bone marrow cavity. In this embodiment, the proximal humeral fracture reduction operation is taken as an example, but not limited thereto.

The outer bone plate 1 can be fixed to the outer surface of the bone, and the outer bone plate 1 is not limited in appearance, and can have various shapes and sizes according to the applicable bone portion. In this embodiment, the outer bone plate 1 includes a flat plate portion 1a and a curved surface portion 1b. The outer bone plate 1 can be provided with at least one first locking hole 11 in the flat plate portion 1a for the bone screw S to pass. The first locking hole 11 locks the flat plate portion 1a to a relatively smooth portion between the two ends of the tibia; and the outer bone plate 1 can be provided with at least one second locking hole 12 at the curved surface portion 1b for the bone The screw S locks the flat plate portion 1a to the end portion where the curvature of the tibia changes greatly through the second lock hole 12. Wherein, when the number of the second locking holes 12 is several, the locking directions of the plurality of second locking holes 12 may be partially the same or different, so as to meet the requirements of different locking angles. In addition, the outer bone plate 1 is further provided with an outer positioning hole 13 between the at least one first locking hole 11 and the at least one second locking hole 12 for connecting the fixing component 3 with the outer positioning hole 13 The inner bone plate 2 forms an initial positioning effect.

The inner bone plate 2 can be used to penetrate into the bone marrow cavity of the bone. The present invention also does not limit the appearance of the inner bone plate 2. In this embodiment, the inner bone plate 2 can be selected as an elongated thin plate which is easy to shape. . The inner bone plate 2 is provided with at least one first through hole 21 and at least one second through hole 22 , and an inner positioning hole 23 between the at least one first through hole 21 and the at least one second through hole 22 . . When the outer bone plate 1 and the inner bone plate 2 are positioned through the connection of the fixing component 3, the first through hole 21 of the inner bone plate 2 can be opposite to the first locking hole 11 of the outer bone plate 1, which The second through hole 22 of the inner bone plate 2 can be opposite to the second locking hole 12 of the outer bone plate 1 so as to have a plurality of bone screws S The inner positioning hole 23 of the inner bone plate 2 is opposite to the outer positioning hole 13 of the outer bone plate 1 so that the fixing assembly 3 can pass through and form a positioning. The first through hole 21 of the inner bone plate 2 is preferably provided with an internal thread 211, so that the bone screw S can be stably fixed to the inner bone plate 2, so that the inner bone plate 2 can no longer be relative to the bone screw. S produces slip.

The fixing component 3 includes two clamping members 31 , a positioning piece 32 and a positioning strip 33 . The two clamping members 31 are clamped on two sides of the inner bone plate 2 , and the outer bone plate 1 is disposed on the positioning piece 32 . Between the inner bone plates 2, the positioning piece 32 is combined with the two clamping members 31 and is provided with a through slot 321; the positioning strip 33 is coupled to the through slot 321 , the outer positioning hole 13 of the outer bone plate 1 and the inner bone plate 2 The inner positioning hole 23 is such that the first locking hole 11 of the outer bone plate 1 is opposite to the first through hole 21 of the inner bone plate 2, and the second locking hole 12 of the outer bone plate 1 is aligned with the inner bone. The second through hole 22 of the plate 2 is in the locking range.

In this embodiment, each of the clamping members 31 can be provided with a clamping groove 311 at one end, and the groove width of the clamping groove 311 is about equal to the thickness of the inner bone plate 2, so that the two clamping members 31 can be respectively The clamping groove 311 is clamped to both sides of the inner bone plate 2. In addition, the two clamping members 31 can be respectively provided with a first joint portion 312, the positioning piece 32 can be provided with two second joint portions 322, and the through groove 321 is located between the two second joint portions 322; Therefore, the two clamps 31 can be detachably coupled to the second joints 322 of the positioning piece 32 by the first joint portion 312 thereof.

For example, but not limited to, the first joint portion 312 of the two clamps 31 and the two second joint portions 322 of the positioning piece 32 can be set as through holes, and two plugs 34 are additionally provided, and the plugs are respectively provided. The second joint portion 322 and the first joint portion 312 are inserted through the corresponding second joint portion 322 and the first joint portion 312 to form an indirect joint with the plug 34, thereby achieving improved manufacturing and The convenience of assembly and other effects. In other embodiments, the second joint portion 322 of the positioning piece 32 and the first joint portion 312 of the clamp member 31 may be formed as recessed holes and protrusions that can be assembled with each other, so that the corresponding second The joint portion 322 and the first joint portion 312 can be directly combined, or can be set as other equivalent detachable joint structures, which are all technical fields of the present invention. Those with ordinary knowledge can understand that this creation is not limited.

Moreover, the fixing component 3 can be further provided with a stopper piece 35 which is connected to one end of the positioning piece 32 so as to be smoothly attached to the flat plate portion 1a of the outer bone plate 1 by the blocking piece 35. The surface and the ease of operation when the positioning bar 33 and the two pins 34 are worn or removed. In addition, if the blocking piece 35 is blocked to the first locking hole 11 of the outer bone plate 1, the blocking piece 35 is preferably further provided with a notch 351 to expose the first locking hole 11 of the outer bone plate 1 to Maintain good operational convenience.

Referring to the second and third figures, according to the foregoing structure, when the interlocking bone plate positioning device of the present invention is implemented in the operation for restoring the affected part of the fracture, the interlocking bone plate positioning device can be assembled in advance so as to directly The inner bone plate 2 penetrates into the bone marrow cavity of the bone B1 of a part of the affected part of the fracture, and the flat plate 1a of the outer bone plate 1 is attached to the outer surface of the bone B1. . At this time, since the fixing component 3 has been stably fixed to the outer bone plate 1 and the inner bone plate 2, the first locking hole 11 of the outer bone plate 1 is opposite to the first through hole 21 of the inner bone plate 2, so Even if the first through hole 21 on the inner bone plate 2 is not visible, it can be ensured that the bone screw S can pass through the inner bone after passing through the first locking hole 11 of the outer bone plate 1 and the front end of the bone B1. The first through hole 21 of the plate 2 is then locked to the rear end of the bone B1.

Referring to Figures 3 and 4, the outer bone plate 1 and the inner bone plate 2 can be firmly coupled with the bone B1 through the aforementioned locking, so that the fixing assembly 3 can be removed and the outer bone plate 1 can still be maintained. The second keyhole 12 is aligned in the locking range of the second through hole 22 of the inner bone plate 2. Continue to reset the bone B2 of another part of the fractured part, so that the originally exposed part of the inner bone plate 2 can penetrate into the bone marrow cavity of the bone B2, and then pass the second screw hole of the outer bone plate 1 with the bone screw S. 12 and the front end of the bone B2, and accurately pass through the second through hole 21 of the inner bone plate 2 and locked to the rear end of the bone B2 to complete the operation of fracture reduction.

In summary, the interlocking bone plate positioning device of the present invention can stably and reliably position the relative positions of the outer bone plate and the inner bone plate by the fixing component, so that the outer bone plate and the inner bone plate are not produced. The deflection is performed to maintain the outer bone plate opposite to the hole on the inner bone plate; accordingly, in the fracture reduction surgery, even if the hole in the inner bone plate is not visible, the operator can accurately and quickly lock the outer bone plate with the bone screw. The inner bone plate and the bone can improve the efficiency of surgery and reduce the risk of surgery.

Although the present invention has been disclosed by the above-described preferred embodiments, it is not intended to limit the present invention, and it is still within the spirit and scope of the present invention to make various changes and modifications to the above embodiments. The technical scope of the protection is created, so the scope of protection of this creation is subject to the definition of the patent application scope attached.

1‧‧‧External bone plate

1a‧‧‧ Flat section

1b‧‧‧Surface

11‧‧‧First keyhole

12‧‧‧Second keyhole

2‧‧‧Inside bone plate

21‧‧‧First through hole

211‧‧‧ internal thread

22‧‧‧Second through hole

3‧‧‧Fixed components

31‧‧‧Clamp firmware

311‧‧‧Clamp slot

312‧‧‧ first joint

32‧‧‧ Positioning film

321‧‧‧through slot

322‧‧‧Second junction

33‧‧‧Positioning bar

34‧‧‧Latch

35‧‧‧stop film

351‧‧‧ Missing slot

B1‧‧‧ bones

S‧‧‧ bone screw

Claims (7)

An interlocking bone plate positioning device comprises: an outer bone plate having an outer positioning hole between at least a first locking hole and at least a second locking hole; an inner bone plate having the inner bone plate An inner positioning hole is located between the at least one first through hole and the at least one second through hole; and a fixing component, the fixing component comprises two clamping pieces, a positioning piece and a positioning bar, and the two clamping pieces are clamped on the fixing piece The two sides of the inner bone plate are disposed between the positioning piece and the inner bone plate. The positioning piece is combined with the two clamping pieces and is provided with a through slot. The positioning strip penetrates the through slot and the outer positioning hole. And the inner positioning hole, the first locking hole is opposite to the first through hole, and the second locking hole is aligned in a locking range of the second through hole. The interlocking bone plate positioning device of claim 1, wherein each of the clamping members is provided with a clamping slot, and the two clamping members are respectively clamped on the two sides of the inner bone plate by the clamping groove. The interlocking bone plate positioning device of claim 2, wherein each of the clamping members is provided with a first joint portion, and the positioning piece is provided with two second joint portions, wherein the through grooves are located at the second and second portions. Between the joint portions, the two clamps are respectively detachably coupled to the second joint portions of the positioning piece by the first joint portion thereof. The interlocking bone plate positioning device of the third aspect of the invention, wherein the first joint portion and the second joint portion are both through holes, and the fixing assembly is further provided with two pins, each of the plugs running through Corresponding the second joint portion and the first joint portion. The interlocking bone plate positioning device according to claim 1, wherein the fixing component is attached to the surface of the outer bone plate by a stopper piece, and the stopper piece is connected to one end of the positioning piece. The interlocking bone plate positioning device of claim 5, wherein the blocking piece is provided with a notch to expose the first locking hole of the outer bone plate. The interlocking bone plate positioning device according to claim 1, wherein the inner bone plate The first through hole is provided with an internal thread.