CN217338791U - Ulna near-end rear-side bone plate - Google Patents

Abstract

The utility model discloses an ulna near-end rear-side bone plate, which comprises a bone plate body, wherein the bone plate body is divided into a near-end section and a far-end section, the end part of the near end section is provided with an arc-shaped bulge, the near end section is sequentially provided with a near end part kirschner wire hole, a near end middle locking hole, a near end middle kirschner wire hole, a near end lower locking hole and a sliding hole, the number of the proximal middle locking holes is 4, an annular structure is formed, the middle part of the annular structure is provided with a proximal upper Kirschner wire hole, a plurality of near-end lower locking holes are arranged, near-end lower kirschner wire holes are arranged between adjacent near-end lower locking holes, the distal end section is sequentially provided with a distal end upper locking hole, a distal end upper Kirschner wire hole, a distal end middle locking hole, a sliding hole I, a distal end lower locking hole and a distal end lower Kirschner wire hole, the locking hole in the distal end is provided with a plurality of holes, and a Kirschner wire hole in the distal end is formed between the adjacent locking holes in the distal end. The device is provided with a plurality of Kirschner wire holes along the bone fracture plate body, so that the Kirschner wire holes can be used under various fracture conditions.

Description

Ulna near-end rear-side bone plate

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to ulna near-end rear side connects hone lamella.

Background

The protuberance under the skin behind the proximal end of the ulna is the olecranon. And the anterior ulnar coronal process to form a semilunar notch. This notch just articulates with the humeral trochlear. The ulnar-humeral joint only has flexion and extension movements, and the olecranal fracture is an intra-articular fracture involving the semilunar notch. For the olecranal fracture with heavier severity and higher complexity, the olecranal bone plate is the preferred scheme for internal fixation at present. The existing olecroanon bone fracture plate is attached to the olecroanon and the crest during fixation, one or two screw holes are arranged at the proximal joint end and positioned at the top, and the olecroanon bone fracture plate can be driven into an intramedullary nail or a screw to be fixed in parallel to the long axis of the ulna. It has significant disadvantages: the proximal joint end is provided with a large hole (intramedullary nail) or multiple holes, which may influence the joint cavity, and has high requirements on operation; the distal end has no Kirschner wire hole, so that the positioning is inconvenient during use, and the olecroanon bone fracture plate is easy to slip off from the surface of the ulna due to the structural characteristics of the ridge; the distal end of the olecroanon bone fracture plate is not provided with a groove, so that the olecroanon bone fracture plate is easy to be attached to an ulna and cannot be retrieved after the ulnar is generated; without enough sliding holes, there is no moving space left for fixation, and there may be displacement or stress concentration between bone fragments after fixation is completed. Therefore, there is a need for an ulna proximal posterior bone plate that solves the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ulna near-end rear side connects hone lamella to solve the problem that mentions in the background art. In order to achieve the above object, the utility model provides a following technical scheme: the proximal end rear side bone fracture plate comprises a bone fracture plate body, wherein the bone fracture plate body is divided into a proximal end section and a distal end section, the proximal end section and the distal end section are in smooth transition, the proximal end section is of an arc-shaped structure, extends towards two sides in a curved manner and is attached to an elbow joint end of an ulna, an arc-shaped bulge is arranged at the end part of the proximal end section, the arc-shaped bulge is bent inwards and is attached to an olecranon of the ulna, a proximal end upper locking hole is formed in the arc-shaped bulge, a proximal end Kirschner wire hole, a proximal end middle locking hole, a proximal end lower locking hole and a sliding hole are sequentially arranged on the proximal end section from top to bottom, 4 proximal end middle locking holes are arranged in a zigzag oblique manner to form an annular structure, a proximal end upper Kirschner wire hole is formed in the middle of the annular structure, a plurality of proximal end lower locking holes are formed in the proximal end, and a proximal end lower Kirschner wire hole is formed between adjacent proximal end lower locking holes, the cross section of the distal section is arc-shaped and is attached to ridges on the surface of an ulna, a plurality of distal end upper locking holes, a plurality of distal end upper Kirschner wire holes, a distal end middle locking hole, a sliding hole I, a distal end lower locking hole and a distal end lower Kirschner wire hole are sequentially formed in the distal section from top to bottom, a plurality of distal end middle locking holes are formed between adjacent distal end middle locking holes, and the distal end lower Kirschner wire holes are located at the lower end part of the distal section.

Preferably, there are 2 locking holes in the distal end.

Preferably, the back of the distal section is provided with arc-shaped grooves which are positioned at two sides of the Kirschner wire hole in the distal end.

Preferably, through grooves are formed in two sides between the sliding hole and the upper distal locking hole, between the upper distal locking hole and the middle distal locking hole, between the middle distal locking hole and the sliding hole I, and between the sliding hole I and the lower distal locking hole.

Preferably, the number of the Kirschner wire holes at the proximal end part is 4, and the Kirschner wire holes are distributed up and down along two sides of the proximal end section.

Preferably, the number of the proximal lower locking holes is 2, and the number of the proximal middle kirschner wire holes is 2, and the proximal middle kirschner wire holes are distributed along two sides of the proximal section.

Preferably, the edge of the bone plate body is of a smooth cambered surface structure.

Preferably, the thickness of the bone fracture plate body is 1.0-3.0mm, the length is 6-20cm, and the width is 0.8-1.6 cm.

The utility model discloses a technological effect and advantage: the device is provided with a plurality of Kirschner wire holes along the bone fracture plate body, so that the Kirschner wire holes can be used under various fracture conditions; the distal section is provided with a through groove, so that the shaping in the operation is convenient, and the ulna-shaped artificial limb is suitable for ulna of different people; the two sliding holes are arranged, so that stress concentration can be avoided in the operation process, and the displacement of the fracture block is eliminated. The position of the bone fracture plate and the olecroanon is adjusted to correspond more accurately and rapidly, so that the bone fracture plate is more attached to the far end and the near end of the ulna, and the operation process is facilitated; firstly, drilling a cortical bone screw in the sliding hole to ensure that the bone fracture plate is tightly attached to the ulna; the locking holes in the near end are arranged in a zigzag diagonal manner, so that the occupied area is reduced while the number of hole positions is ensured, and the narrow space on the ridge is fully utilized; the back arc-shaped groove design reduces the compression of the bone fracture plate on bone tissues, is more beneficial to the blood supply of bones and prevents the bones from necrosis; the design of the Kirschner wire hole on the near end provides a drop point for the auxiliary clamping tool, the temporary fixing mode is more diversified, and the operation flow is convenient; the cross section of the distal section of the bone fracture plate is arc-shaped and perfectly attached to the ridge on the surface of the ulna, so that the distal section of the bone fracture plate is attached to the ridge on the rear side of the ulna, the phenomenon that the bone fracture plate is unstable in sliding during placement is avoided, the operation difficulty is reduced, and the repeatability is improved.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a back view of the present invention;

FIG. 3 is a side view of the present invention;

fig. 4 is a schematic view of the operation of the present invention.

In the figure: 1-a bone fracture plate body, 2-a proximal section, 3-a distal section, 4-an arc-shaped bulge, 5-a locking hole on the proximal end, 6-a kirschner wire hole on the proximal end, 7-a locking hole in the proximal end, 8-a locking hole in the proximal end, 9-a locking hole under the proximal end, 10-a sliding hole, 11-a locking hole on the proximal end, 12-a locking hole under the proximal end, 13-a locking hole on the distal end, 14-a locking hole on the distal end, 15-a locking hole in the distal end, 16-a sliding hole I, 17-a locking hole under the distal end, 18-a locking hole under the distal end, 19-a locking hole in the distal end, 20-a through groove and 21-an arc-shaped groove.

Detailed Description

In order to make the technical means, the creative features, the objectives and the functions of the present invention easily understood and appreciated, the present invention will be further described with reference to the specific drawings, and in the description of the present invention, unless otherwise specified or limited, the terms "mounted," connected "and" connected "should be understood broadly, and for example, the terms" fixed connection, "detachable connection," integral connection, mechanical connection, and electrical connection may be used; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

Example 1

The ulna proximal end rear side bone plate shown in fig. 1-3 comprises a bone plate body 1, wherein the bone plate body 1 is divided into a proximal end section 2 and a distal end section 3, the proximal end section 2 and the distal end section 3 are in smooth transition, the proximal end section 2 is of an arc-shaped structure, extends towards two sides in a curved manner and is jointed with an elbow joint end of an ulna, an arc-shaped bulge 4 is arranged at the end part of the proximal end section 2, the arc-shaped bulge 4 is inwards bent and jointed with an olecranon of the ulna, an upper proximal end locking hole 5 is formed in the arc-shaped bulge 4, a proximal end Kirschner wire hole 6, a proximal end middle locking hole 7, a proximal end Kirschner wire hole 8, a proximal end lower locking hole 9 and a sliding hole 10 are sequentially arranged from top to bottom in the proximal end section 2, 4 locking holes 7 in the proximal end are arranged in a zigzag oblique manner to form a ring-shaped structure, and an upper proximal end Kirschner wire hole 11 is formed in the middle part of the ring-shaped structure, the proximal lower locking holes 9 are provided with a plurality of proximal lower Kirschner wire holes 12, the cross section of the distal section 3 is arc-shaped and is attached to ridges on the surface of an ulna, the distal section 3 is provided with a distal upper locking hole 13, a distal upper Kirschner wire hole 14, a distal middle locking hole 15, a sliding hole I16, a distal lower locking hole 17 and a distal lower Kirschner wire hole 18 from top to bottom in sequence, the distal middle locking holes 15 are provided with a plurality of distal middle Kirschner wire holes 19, and the distal lower Kirschner wire holes 18 are positioned at the lower end part of the distal section 3 and between the adjacent distal middle locking holes 15.

Example 2

The ulna proximal end rear side bone plate shown in fig. 1-3 comprises a bone plate body 1, the edge of the bone plate body 1 is of a smooth cambered surface structure, the thickness of the bone plate body 1 is 1.0-3.0mm, the length of the bone plate body 1 is 6-20cm, the width of the bone plate body is 0.8-1.6cm, the bone plate body 1 is divided into a proximal section 2 and a distal section 3, the proximal section 2 and the distal section 3 are in smooth transition, the proximal section 2 is of an arc structure, extends towards curves at two sides and is jointed with an elbow joint end of an ulna, an arc-shaped bulge 4 is arranged at the end part of the proximal section 2, the arc-shaped bulge 4 is inwards bent and is jointed with an olecranon the ulna, an upper proximal end locking hole 5 is formed on the arc-shaped bulge 4, a lower proximal end kirschner wire hole 6, a proximal middle locking hole 7, a proximal middle kirschner wire hole 8, a lower proximal end locking hole 9 and a sliding hole 10 are sequentially arranged from top to bottom on the proximal section 2, the proximal end part comprises a proximal end section 2, a proximal end part 2 and a proximal end part 3, wherein the proximal end part comprises 4 Kirschner wire holes 6 which are distributed up and down along two sides of the proximal end section 2 and used for temporarily fixing the proximal end section 2 to align the arc-shaped protrusions 4, the proximal end middle locking holes 7 comprise 4 locking holes which are arranged in a zigzag oblique manner to form an annular structure, the occupied area is reduced while the number of the hole positions is ensured, the middle part of the annular structure is provided with proximal end upper Kirschner wire holes 11, the proximal end upper Kirschner wire holes 11 provide a drop point for an auxiliary clamping tool to facilitate the position adjustment of the bone fracture plate body 1, the proximal end middle Kirschner wire holes 8 comprise 2 and are distributed along two sides of the proximal end section 2, the proximal end lower locking holes 9 comprise 2, a proximal end lower Kirschner wire hole 12 is arranged between the adjacent proximal end lower locking holes 9, the cross section of the distal end section 3 is arc-shaped and is attached to ridges of the surface of an ulna bone, so that the proximal end part is prevented from sliding unstably when the proximal end part is placed and the proximal end part is placed, and the operation difficulty is reduced, the repeatability is improved, a far-end upper locking hole 13, a far-end upper Kirschner wire hole 14, a far-end middle locking hole 15, a sliding hole I16, a far-end lower locking hole 17 and a far-end lower Kirschner wire hole 18 are sequentially formed in the far-end section 3 from top to bottom, 2 far-end middle locking holes 15 are formed, a far-end middle Kirschner wire hole 19 is formed between adjacent far-end middle locking holes 15, the far-end lower Kirschner wire hole 18 is positioned at the lower end part of the far-end section 3, an arc-shaped groove 21 is formed in the back of the far-end section 3, the arc-shaped grooves 21 are positioned on two sides of the far-end middle Kirschner wire hole 19, the back of the bone plate body 1 is in point contact with the bone surface, the bone blood supply is ensured, and the fracture healing is facilitated, through grooves 20 are formed between the sliding hole 10 and the far-end upper locking hole 13, between the far-end upper locking hole 13 and the far-end middle locking hole 15, between the far-end middle locking hole 15 and the sliding hole I16, and the two sides between the sliding hole I16 and the far-end lower locking hole 17, the through groove 20 is used for changing the shape of the bone fracture plate body 1, and can be used for correcting when the bone fracture plate body 1 cannot be attached to an ulna.

The utility model discloses process flow and theory of operation do: a specific fixing mode of the proximal end of the ulna and the posterior side bone plate is shown in fig. 4, firstly, the fracture end is exposed, and the ulna is dissected and reduced; the bone fracture plate body 1 is jointed with the ulna, and if the shape of the bone fracture plate body 1 is not jointed with the ulna, the bone fracture plate body is bent by a tool to be jointed; a kirschner wire is driven into the kirschner wire hole 12 below the near end, and whether the bone fracture plate body 1 is opposite to the ulna or not is checked in a perspective mode; if so, the cortical screw is driven into the sliding hole 10 and the k-wire in the proximal lower k-wire hole 12 is pulled out. If not, the Kirschner wire in the Kirschner wire hole 12 at the lower part of the near end is pulled out, the position of the ruler bone fracture plate body 1 is adjusted, and the Kirschner wire is driven into the Kirschner wire hole 12 at the lower part of the near end again. Carrying out fluoroscopy again until the position of the bone fracture plate body 1 is correct; finely adjusting the position of the bone fracture plate body 1 up and down to ensure that the arc-shaped bulge 4 is tightly attached to the olecranon; if the bone plate body 1 is correctly positioned and tightly attached, kirschner wires are driven into the proximal end kirschner wire holes 6 on the uppermost side (2 proximal end kirschner wire holes 6 on the upper side). If not, the Kirschner wire in the Kirschner wire hole 6 at the proximal end part is pulled out, the position of the bone fracture plate body 1 is adjusted, and the Kirschner wire is driven into the Kirschner wire hole 6 at the proximal end part again. Performing fluoroscopy again until the position of the bone fracture plate body 1 is correct and the bone fracture plate body is tightly attached; a cortical bone screw is driven into the locking hole 5 on the near end, and a kirschner wire in the kirschner wire hole 6 at the near end part is pulled out; a Kirschner wire is driven into the Kirschner wire hole 18 below the far end, and whether the bone fracture plate body 1 is opposite to the ulna or not is checked in a perspective mode; if so, a cortical screw is driven into the sliding hole I16 and the K-wire in the distal lower K-wire hole 18 is withdrawn. If not, the kirschner wires in the kirschner wire holes 18 at the far end are pulled out, the position of the bone fracture plate body 1 is adjusted, and the kirschner wires are driven into the kirschner wire holes 18 at the far end again. Carrying out fluoroscopy again until the position of the bone fracture plate body 1 is correct; driving locking screws into the proximal middle locking hole 7 and the proximal lower locking hole 9, and replacing the cortical screws in the proximal upper locking hole 5 with the locking screws; and (3) driving locking screws into the distal end middle locking hole 15 and the distal end lower locking hole 17 adjacent to the distal end upper locking hole 13 and the sliding hole I16, and extracting the cortical screws in the sliding hole 10 and the sliding hole I16.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (8)

1. The utility model provides an ulna near-end posterolateral osteosynthesis plate, includes the coaptation board body, its characterized in that: the bone fracture plate body is divided into a proximal section and a distal section, the proximal section and the distal section are in smooth transition, the proximal section is of an arc-shaped structure, extends towards curves on two sides and is jointed with an elbow joint end of an ulna, an arc-shaped bulge is arranged at the end part of the proximal section, the arc-shaped bulge is bent inwards and is jointed with an olecranon of the ulna, an upper proximal locking hole is formed in the arc-shaped bulge, a proximal end Kirschner wire hole, a proximal middle locking hole, a proximal middle Kirschner wire hole, a proximal lower proximal locking hole and a sliding hole are sequentially arranged from top to bottom, 4 proximal middle locking holes are arranged and are arranged along a Z shape in an oblique manner to form an annular structure, the middle part of the annular structure is provided with a plurality of upper proximal Kirschner wire holes, a plurality of proximal lower proximal locking holes are arranged between adjacent lower proximal locking holes, the cross section of the distal section is arc-shaped and is jointed with ridges on the surface of the ulna, the distal end section is sequentially provided with a plurality of distal end upper locking holes, a plurality of distal end upper Kirschner wire holes, a plurality of distal end middle locking holes, a plurality of sliding holes I, a plurality of distal end lower locking holes and a plurality of distal end lower Kirschner wire holes from top to bottom, the distal end middle Kirschner wire holes are arranged between the adjacent distal end middle locking holes, and the distal end lower Kirschner wire holes are positioned at the lower end part of the distal end section.

2. The proximal ulna posterior bone plate of claim 1, wherein: there are 2 locking holes in the distal end.

3. The proximal ulna posterior bone plate according to any one of claims 1 or 2, wherein: the back of the distal section is provided with arc-shaped grooves which are positioned at two sides of a Kirschner wire hole in the distal end.

4. The proximal ulna posterior bone plate of claim 1, wherein: through grooves are formed in the two sides between the sliding hole and the upper locking hole in the far end, between the upper locking hole in the far end and the middle locking hole in the far end, between the middle locking hole in the far end and the sliding hole I and between the sliding hole I and the lower locking hole in the far end.

5. The proximal ulna posterior bone plate of claim 1, wherein: the number of the Kirschner wire holes at the end part of the near end is 4, and the Kirschner wire holes are distributed up and down along two sides of the near end section.

6. The proximal ulna posterior bone plate of claim 1, wherein: the number of the proximal lower locking holes is 2, and the number of the proximal middle Kirschner wire holes is 2, and the proximal lower locking holes are distributed along two sides of the proximal section.

7. The proximal ulna posterior bone plate of claim 1, wherein: the edge of the bone fracture plate body is of a smooth cambered surface structure.

8. The proximal ulna posterior bone plate of claim 1, wherein: the thickness of the bone fracture plate body is 1.0-3.0mm, the length is 6-20cm, and the width is 0.8-1.6 cm.

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