CN209695357U - Bone plate system on the outside of a kind of minor's distal humerus - Google Patents

Abstract

The utility model discloses bone plate systems on the outside of a kind of minor's distal humerus, including bone plate and screw, bone plate includes head, neck and plate portion, plate portion includes connecting plate section and module extender board section, connecting plate section camber and it is connected with neck, module extender board section is equal with the width of connecting plate section and is connected with each other, it integrally arches upward to front arc on head, the neck is gradually increased from connecting plate section to cephalad direction width, head and neck rounding off, three lock holes of triangular arrangement are provided on institute head, a lock hole is provided on neck, several locking compress holes and at least one locking compress hole are provided in connecting plate section, several locking compress holes are provided in module extender board section, screw includes nut portion and bar portion, bar portion is smooth shank portions, the periphery in nut portion is provided with locking screw thread structure.The bone plate system can reduce the influence to bone growth to minor's distal humerus after fixed, be more suitable the fracture fixation of minor.

Description

Bone plate system on the outside of a kind of minor's distal humerus

Technical field

The utility model relates to outside a kind of bone plate system more particularly to a kind of distal humerus that suitable minor uses Flank bone plate system.

Background technique

The steel plate of children and teenager's supracondylar fracture of humerus and intercondylar fracture of humerus are not aimed on the market so far.And Minor's supracondylar fracture of humerus and intercondylar fracture of humerus are different from adult, because its osteoepiphyseal line is not closed, fix to fracture site When to reduce influence to bone growth as far as possible.For children and teenager's supracondylar fracture of humerus, if with traditional gram Family name's needle cross-fixing rear stability is poor, postoperative to need to be aided with outer fixation, and elbow joint function will receive influence, same hour hands over time Tail can cause excitation, skin injury etc. to skin.If with common screw Interal fixation, the screw thread of screw can cause bone Bone bridge is formed between epiphysis, influences the growth of bone, while steel plate shape and size are not suitable for use in the fracture fixation of distal humerus.

Utility model content

The technical problem to be solved by the utility model is to provide on the outside of a kind of distal humerus that suitable minor uses Bone plate system, the bone plate system can reduce the influence to bone growth to minor's distal humerus after fixed, more Add the fracture fixation of suitable minor.

In order to solve the above technical problems, the technical solution of the utility model is: being flanked outside a kind of minor's distal humerus Bone plate system, including bone plate and screw, the bone plate include the head being wholely set, neck and plate portion, the plate portion packet It includes connecting plate section and module extender board section, the connecting plate section camber and is connected with neck, the module extender board section and connecting plate section Width is equal and is connected with each other, and the head is integrally arched upward to front arc, and the neck is from connecting plate section to cephalad direction width It is gradually increased, the head and neck rounding off, three lock holes of triangular arrangement is provided on the head, it is described It is provided with a lock hole on neck, several locking compress holes and at least one locking compress are provided in the connecting plate section Hole is provided with several locking compress holes in the module extender board section, and the screw includes nut portion and bar portion, and the bar portion is Smooth shank portions, the periphery in the nut portion are provided with the locking screw thread structure being adapted to each locking compress hole, locking compress hole.

As a preferred solution, the position setting in the locking compress hole is connected in connecting plate section with module extender board section Junction.

As a preferred solution, the first lock hole, second are respectively defined as in three lock holes on the head Lock hole and third lock hole, first lock hole and the second lock hole are located at front and back cloth on the extending direction line of bone plate It sets, for the first lock hole compared to the second lock hole closer to the head end on head, third lock hole is located at the other side of extending direction line.

As a preferred solution, it is crossed in the first lock hole and third lock hole in the back side contour line on place head The back side contour line of heart line is arc profile line.

As a preferred solution, first reference line is set, in the excessively described arc profile line of first reference line The center of circle where point and arc profile line, the angle between the center line of the first lock hole and the first reference line is 2.3 ° -2.6 °；The Angle between the center line of three lock holes and the first reference line is 3.3-3.6 °.

As a preferred solution, second reference line is set, second reference line is vertical with module extender board section；Institute Stating the angle of cut between the center line of the first lock hole and the second reference line is 31 ° -33 °；The center line of second lock hole and second The angle of reference line is 25 ° -27 °, and the angle of cut between lock hole and the second reference line on the neck is 20 ° -22 °.

As a preferred solution, the quantity in the locking compress hole in the connecting plate section is two and is respectively positioned on locking The front side in pressurization hole, the center line in the locking compress hole is parallel with the second reference line, two lockings in connecting plate section Angle between the center line and the second reference line in pressurization hole increases from the front to the back.

As a preferred solution, the tail end of the module extender board section at it is pointed and have arc transition end face, the circle Arc transition end face all has circular arc chamfering between the front and the back side of module extender board section respectively.

After above-mentioned technical proposal, the effect of the utility model is: 1, it since head whole to front arc arches upward, The neck is gradually increased from connecting plate section to cephalad direction width, and the head and neck rounding off, therefore, which can Preferably mutually to be attached with distal humerus, head by neck be connected with connecting plate section can be smoother transition, bone plate Process simpler, the also implantation of more convenient bone plate；2. being provided with into three lockings of triangular arrangement on the head Hole is provided with a lock hole on the neck, and such three lock holes can lock biggish range, for boniness folded block Classification of fracture can be fixed more；3. being provided with several locking compress holes in the connecting plate section and at least one locking adding Press strip hole is provided with several locking compress holes in the module extender board section, and locking compress hole can choose locking nail or pressurization Nail adapts to more preferably, and the setting in locking compress hole can also facilitate the position of bone plate to adjust.4, the screw includes nut Portion and bar portion, the bar portion are smooth shank portions, and the periphery in the nut portion is provided with and each locking compress hole, locking compress hole The locking screw thread structure of adaptation, after the screw is fixed, smooth bar portion can be pierced directly in bone, not will lead to by osteoepiphyseal line Between epiphysis formed bone bridge, just do not influence the bone growth of minor as far as possible yet, the bone plate can mention at present not at Kirschner wire fixation used in year people, fixation is stronger, postoperative to be easier to restore.

Again since the junction that connecting plate section is connected with module extender board section, the position is arranged in the position in the locking compress hole The intersection of the connecting plate section just at module extender board section and arc is set, in this way before the adjusting bone plate in the locking compress hole Position afterwards, and adjusting direction and module extender board section have certain angle of cut, it is more convenient suitable to adjust.

Again due to setting first reference line, first reference line arc profile line midpoint and arc profile line excessively The place center of circle, the angle between the center line of the first lock hole and the first reference line are 2.3 ° -2.6 °；The center of third lock hole Angle between line and the first reference line is 3.3-3.6 °, and it is fixed more preferable to be implanted into lock screw in the angular range.

Again since second reference line is vertical with module extender board section；The center line and the second reference line of first lock hole Between the angle of cut be 31 ° -33 °；The angle of the center line of second lock hole and the second reference line is 25 ° -27 °, on the neck Lock hole and the second reference line between the angle of cut be 20 ° -22 °, in this way, on the first lock hole and the second lock hole and neck Lock hole implant angle it is different, and be gradually reduced, locking effect is more preferably more stable.

Again since the tail end of the module extender board section is at pointed and have arc transition end face, arc transition end face difference Circular arc chamfering is all had between the front and the back side of module extender board section, the module extender board section tail end can preferably and muscle in this way Contact reduces tingling sensation.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the positive structure schematic of the utility model embodiment；

Fig. 2 is cross-sectional view of the Fig. 1 at A-A；

Fig. 3 is the cross-sectional view that Fig. 1 extends the reversed direction B-B in face bone plate；

Fig. 4 is the structural schematic diagram of screw；

In attached drawing: 1. bones plate；11. head；12. neck；13. connecting plate section；14. module extender board section；15. the first locking Hole；16. the second lock hole；17. third lock hole；18. locking compress hole；19. locking compress hole；110. arc transition end Face；111. the first reference line；112. arc profile line；113. the second reference line；2. screw；21. bar portion；22. nut portion；23. Locking screw thread structure.

Specific embodiment

The utility model is described in further detail below by specific embodiment.

As shown in Figures 1 to 4,1 system of bone plate on the outside of a kind of minor's distal humerus, including bone plate 1 and screw 2, the bone plate 1 includes head 11, neck 12 and the plate portion being wholely set, and the plate portion includes connecting plate section 13 and straight line Plate section 14, the connecting plate section camber and is connected with neck 12, and the module extender board section 14 is equal with the width of connecting plate section 13 And be connected with each other, the head 11 is whole to arch upward to front arc, and the neck 12 is from connecting plate section 13 to 11 direction width of head It is gradually increased, the head 11 and 12 rounding off of neck, three lockings of triangular arrangement is provided on the head 11 Hole is provided with a lock hole on the neck 12, several locking compress holes 19 and extremely are provided in the connecting plate section 13 Lack a locking compress hole 18, several locking compress holes 19 are provided in the module extender board section 14, the screw 2 includes spiral shell Cap portion 22 and bar portion 21, the bar portion 21 are smooth shank portions 21, and the periphery in the nut portion 22 is provided with and each locking compress hole 19, the locking screw thread structure 23 that locking compress hole 18 is adapted to.It is provided with interior hex slot in the nut portion 22, is conveniently screwed into.Spiral shell Cap portion 22 is tapered and angle of outer contour is 20 °, and corresponding locking screw hole and locking compress hole 19 are also 20 ° of tapers Screw hole.

As shown in Figure 1, the position in the locking compress hole 18 is arranged in what connecting plate section 13 was connected with module extender board section 14 Junction.

The first lock hole 15, the second lock hole 16 and third lock are respectively defined as in three lock holes on the head 11 Determine hole 17, first lock hole 15 and the second lock hole 16 are located at front and back arrangement on the extending direction line of bone plate 1, the first lock Determine head end of the hole 15 compared to the second lock hole 16 closer to head 11, third lock hole 17 is located at the other side of extending direction line. The back side contour line that the center line of the first lock hole 15 and third lock hole 17 is crossed in the back side contour line on place head 11 is circle Arc contour line 112.

Excessively described 112 midpoint of arc profile line of first reference line 111 and the 112 place center of circle of arc profile line, the first lock Determining the angle between the center line in hole 15 and the first reference line 111 is 2.3 ° -2.6 °；The center line of third lock hole 17 and Angle between one reference line 111 is 3.3-3.6 °, and preferred angle is 2.5 ° and 3.5 ° respectively.

Second reference line 113 is set, second reference line 113 is vertical with module extender board section 14；First locking The angle of cut between the center line in hole 15 and the second reference line 113 is 31 ° -33 °；The center line of second lock hole 16 and the second reference The angle of line 113 is 25 ° -27 °, and the angle of cut between lock hole and the second reference line 113 on the neck 12 is 20 ° -22 °, Preferred degree is 32.5 °, 26.7 ° and 20.64 ° respectively.

Before the quantity in the locking compress hole 19 in the connecting plate section 13 is two and is respectively positioned on locking compress hole 18 Side, the center line in the locking compress hole 18 is parallel with the second reference line 113, two locking compress holes in connecting plate section 13 Angle between 19 center line and the second reference line 113 increases from the front to the back.The tail end of the module extender board section 14 at pointed and With arc transition end face 110, the arc transition end face 110 has between the front and the back side of module extender board section 14 respectively There is circular arc chamfering.The circular arc chamfering is the chamfering of R1.

1 system of bone plate is instead of kirschner needle system used in current minor's fracture of humerus, kirschner needle system Stability is poor, needs plus use outer fixed structure, and the set time, which is grown, will affect elbow joint function, while the backshank of Kirschner wire is to skin Skin may be pierced through to cause pain and cause to infect.And 1 system of bone plate keeps fixation more stable using bone plate 1, and spiral shell The bar portion 21 of nail 2 is non-threaded, avoids humerus rear end using bone bridge is formed after drive screw, influences bone growth, and the spiral shell of screw 2 Cap is locking screw thread structure 23, increases solid rear stability in this way, prevents elbow joint stiffness.

Embodiment described above is only the description to the preferred embodiment of the present invention, not as the limit to the scope of the invention It is fixed, on the basis of not departing from design spirit of the present invention, to various modifications and transformation that technical solution of the present invention is made, it should all fall Enter in the protection scope that claims of the present invention determines.

Claims (8)

1. bone plate system on the outside of a kind of minor's distal humerus, including bone plate and screw, it is characterised in that: the synthetism Plate includes the head being wholely set, neck and plate portion, and the plate portion includes connecting plate section and module extender board section, the connecting plate section at Arc and it is connected with neck, the module extender board section is equal with the width of connecting plate section and is connected with each other, and the head is whole to just Face arc arches upward, which is gradually increased from connecting plate section to cephalad direction width, the head and neck rounding off, described It is provided with into three lock holes of triangular arrangement on head, a lock hole, the connecting plate section are provided on the neck On be provided with several locking compress holes and at least one locking compress hole, be provided with several lockings in the module extender board section Pressurize hole, the screw includes nut portion and bar portion, and the bar portion is smooth shank portions, the periphery in the nut portion be provided with respectively The locking screw thread structure that locking compress hole, locking compress hole are adapted to.

2. bone plate system on the outside of a kind of minor's distal humerus as described in claim 1, it is characterised in that: the locking The junction that connecting plate section is connected with module extender board section is arranged in the position in pressurization hole.

3. bone plate system on the outside of a kind of minor's distal humerus as claimed in claim 2, it is characterised in that: the head On three lock holes in be respectively defined as the first lock hole, the second lock hole and third lock hole, first lock hole and Second lock hole is located at front and back arrangement on the extending direction line of bone plate, and the first lock hole compares the second lock hole closer to head Head end, third lock hole is located at the other side of extending direction line.

4. bone plate system on the outside of a kind of minor's distal humerus as claimed in claim 3, it is characterised in that: place head Back side contour line in cross the first lock hole and third lock hole the back side contour line of center line be arc profile line.

5. bone plate system on the outside of a kind of minor's distal humerus as claimed in claim 4, it is characterised in that: setting one The center of circle where first reference line, first reference line arc profile line midpoint excessively and arc profile line, the first lock hole Angle between center line and the first reference line is 2.3 ° -2.6 °；Between the center line of third lock hole and the first reference line Angle is 3.3-3.6 °.

6. bone plate system on the outside of a kind of minor's distal humerus as claimed in claim 5, it is characterised in that: setting one Second reference line, second reference line are vertical with module extender board section；The center line and the second reference line of first lock hole it Between the angle of cut be 31 ° -33 °；The angle of the center line of second lock hole and the second reference line is 25 ° -27 °, on the neck The angle of cut between lock hole and the second reference line is 20 ° -22 °.

7. bone plate system on the outside of a kind of minor's distal humerus as claimed in claim 6, it is characterised in that: the connection The quantity in the locking compress hole in plate section is two and is respectively positioned on the front side in locking compress hole, in the locking compress hole Heart line is parallel with the second reference line, the angle between the center line and the second reference line in two in connecting plate section locking compress hole Increase from the front to the back.

8. bone plate system on the outside of a kind of minor's distal humerus as claimed in claim 7, it is characterised in that: the straight line The tail end of plate section at it is pointed and have arc transition end face, the arc transition end face respectively with the front of module extender board section and back Circular arc chamfering is all had between face.