CN112587219B - lock plate - Google Patents

Abstract

The invention discloses a locking plate, which comprises a cadre, wherein the cadre is provided with a first locking hole, and the locking plate is characterized in that: at least one wall of the area of the front wall and the back wall of the dry part adjacent to the two first locking holes is concavely provided with a first groove. It has the following advantages: after the locking plate is locked at the skeleton, the stress concentration of the skeleton and the muscle can be effectively reduced through the first groove, the soft tissue injury during operation is small, and the implantation is convenient.

Description

lock plate

technical field

The present invention relates to medical devices, and more particularly to locking plates for fracture treatment.

Background technique

Existing locking plates for fracture treatment, such as U.S. Patent Database Publication US10238438B2, a proximal humerus fracture plate for promoting the healing of human humerus fractures, comprising: an upper portion having at least one screw for accommodating an upper screw hole, the trajectory of the screw hole is oriented laterally to medial; a transition section with at least one screw hole for accommodating an intermediate screw, the transition section being integral with the upper section and sufficiently curved to avoid triangular tubercles, the intermediate screw The transition section is fixed along the lateral cortex of the humerus; and the lower part has at least one screw hole for accommodating a lower screw, the trajectory of the screw hole is in an anterior-posterior direction, and the lower part is integrated with the transition part. Both the front wall and the back wall of the lower part are of a plane structure, and the plane structure is likely to cause a high degree of stress concentration, and there is a need for further improvement.

SUMMARY OF THE INVENTION

The present invention provides a locking plate, which overcomes the disadvantages of the locking plate in the background art.

The technical solution adopted by the present invention to solve the technical problem is as follows: the locking plate includes a stem, the stem is provided with a first locking hole, and the area of the adjacent two first locking holes between the front wall and the back wall of the stem is at least A first groove is recessed on one wall.

In one embodiment, the first grooves are concavely formed in the area of each of the two adjacent first locking holes of the front wall and the back wall of the stem.

In one embodiment: the area of the adjacent two first locking holes of the front wall of the stem is recessed with the first grooves, and the bottom of the first grooves of the front wall is a first groove with an opening facing the back wall. Arc segment structure.

In one embodiment: the area of the adjacent two first locking holes on the back wall of the stem is recessed with the first groove, and the bottom of the first groove on the back wall includes a first groove with an opening facing the back wall. Two arc-shaped segments and straight-faced segments respectively connected at both ends of the second arc-shaped segment.

In one embodiment, a second groove is concavely formed in each adjacent two first locking holes of the two side walls of the stem.

In one embodiment, a stitching groove is arranged on the side of the trunk, and a stitching hole arranged through is arranged at the bottom of the stitching groove.

In one embodiment, the head and the torsion part fixed between the head and the stem are further included, the head and the stem are twisted and arranged by the torsion part, and the front wall of the torsion part is also provided with a recess groove.

In one embodiment: the twist arrangement includes the head and the stem being staggered in both a first direction and a second direction, the first direction being arranged in a direction parallel to the thickness of the head, and the second direction being perpendicular to the thickness of the head and the twisting arrangement further includes forming an included angle between the head and the stem.

In one embodiment, the front wall of the torsion portion is arranged concavely, and the concave arrangement constitutes the above-mentioned escape groove, and the escape groove is arranged through the front wall of the torsion portion.

In one embodiment, the escaping groove is in the structure of two large ends and a small one in the middle.

In one embodiment: the middle of the escaping groove is concavely arranged.

In one embodiment: the stem includes a first stem segment, a second stem segment, and a twisted segment fixed between the first stem segment and the second stem segment, and the first stem segment and the second stem segment are formed by the twisted segment. Also twist the arrangement.

Compared with the background technology, the technical solution has the following advantages:

At least one side wall of the front wall and the back wall of the trunk is concave with a first groove in the area of the two adjacent first locking holes. After the locking plate is locked at the bone, the first groove can effectively reduce the bones and muscles. The stress concentration degree is high, the soft tissue damage is small in the surgical operation, and the implantation is convenient.

The front wall and the back wall of the cadre are concave with the above-mentioned first grooves in the area of each adjacent two first locking holes, which can not only effectively reduce the stress concentration of bones and muscles, but also effectively avoid muscles and reduce damage. neurological risk.

The head and the stem are twisted and arranged by the twisting part. The front wall of the twisting part is concave with a way-out groove, and the nerve is avoided by the structure of the twist-arrangement and the way-a-way groove. In conjunction with the nerve, and the abdication slot also has the effect of locating the nerve, the nerve avoidance effect is better, the risk of nerve damage is reduced, the soft tissue damage in the surgical operation is small, and the implantation is convenient.

The head and the trunk are staggered in the first direction and the second direction. By staggering the two directions, the effect of avoiding nerves is better, and the muscles can be avoided.

An angle is formed between the head and the cadre, which further improves the avoidance effect, and improves the convenience of assembly and firm stability.

The front wall of the torsion part is concavely arranged, and the concave arrangement constitutes the above-mentioned giving way groove, or, the giving way groove has a structure with two large ends and a small one in the middle, or, the middle part of the giving way groove is concavely arranged, which is convenient for processing and improving the avoidance effect. The stem includes the first stem segment, the second stem segment and the torsion segment, and the first stem segment and the second stem segment are also twisted and arranged through the twist segment, which can avoid not only nerves but also tendons.

A suture groove is set on the side of the cadre, and the bottom of the suture groove is provided with a suture hole arranged through it, which is convenient for suture.

Description of drawings

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a three-dimensional schematic diagram of a locking plate according to Embodiment 1 of the specific embodiment.

Fig. 2 is a schematic diagram of a locking plate avoiding the axillary nerve in the first embodiment of the specific embodiment.

FIG. 3 is one of the schematic cross-sectional views of the locking plate in Embodiment 1 of the specific embodiment.

FIG. 4 is the second schematic cross-sectional view of the locking plate in Embodiment 1 of the specific embodiment.

FIG. 5 is a schematic diagram of a locking plate avoiding the deltoid muscle in Embodiment 1 of the specific embodiment.

FIG. 6 is a three-dimensional schematic diagram of a locking plate in Embodiment 2 of the specific embodiment.

FIG. 7 is a schematic diagram of the locking plate avoiding the axillary nerve in the second embodiment of the specific embodiment.

FIG. 8 is a schematic diagram of the locking plate avoiding the deltoid muscle in the second embodiment of the specific embodiment.

FIG. 9 is a three-dimensional schematic diagram of a locking plate in Embodiment 3 of the specific embodiment.

FIG. 10 is a three-dimensional schematic diagram of a locking plate according to Embodiment 4 of the specific embodiment.

FIG. 11 is a three-dimensional schematic diagram of a locking plate in Embodiment 5 of the specific embodiment.

FIG. 12 is a three-dimensional schematic diagram of a locking plate in Embodiment 6 of the specific embodiment.

FIG. 13 is a partial perspective schematic view of the locking plate in Embodiment 7 of the specific embodiment.

FIG. 14 is a three-dimensional schematic diagram of a locking plate in Embodiment 8 of the specific embodiment.

FIG. 15 is a schematic cross-sectional view taken along the line C-C of FIG. 14 .

FIG. 16 is a three-dimensional schematic diagram of a locking plate according to Embodiment 9 of the specific embodiment.

FIG. 17 is a schematic cross-sectional view along D-D of FIG. 16 .

FIG. 18 is a three-dimensional schematic diagram of a locking plate in Embodiment 10 of the specific embodiment.

FIG. 19 is a schematic cross-sectional view taken along line E-E of FIG. 18 .

FIG. 20 is a three-dimensional schematic diagram of a locking plate in Embodiment 11 of the specific embodiment.

FIG. 21 is a schematic cross-sectional view taken along line F-F of FIG. 20 .

FIG. 22 is a partial enlarged schematic view of FIG. 20 .

Numeral description: locking plate A, axillary nerve B1, deltoid muscle B2; head 1, trunk 2, torsion part 3, abdication slot 31; second locking hole 11; first locking hole 21, suture hole 22; A groove 231, 232, a first arc segment structure 2311, a second arc segment 2321, a straight face segment 2322, a second groove 233; the first stem segment 23, the second stem segment 24, the torsion segment 25; the middle concave Structure 32; suture groove 221.

Detailed ways

Example 1

See Figures 1, 2, and 5, Fixation device for proximal humerus fractures, including locking plate A and fixation screws. The locking plate includes a head 1, a stem 2 and a torsion part 3 fixed between the head 1 and the stem 2. The head 1 and the stem 2 are twisted and arranged by the twisted part 3. The twist arrangement includes: the head 1 and the stem 2. The stem 2 is staggered in the first direction and the second direction, and an angle is formed between the head 1 and the stem 2. The first direction is arranged in the direction parallel to the thickness of the head 1, and the second direction is along the vertical head. The direction of the thickness of the part 1 is arranged. The front wall of the torsion portion 3 is also recessed with a recessed groove 31 to avoid the axillary nerve B1 through the above-mentioned twist arrangement and the structure of the escape groove 31 . During the surgical treatment: the head 1 of the locking plate A is placed on the lateral surface of the humerus, and the abdication groove 31 of the torsion part 3 corresponds to the position where the axillary nerve B1 goes. A begins to have a torsional arc where the axillary nerve goes out (5-8cm from the proximal end of the locking plate A), then the trunk 2 can be placed around the anterior side of the humerus, so that the torsion structure of the torsion part 3 and the abdication slot 31 are used to avoid the axillary Nerve B1 and deltoid muscle B2, realize the minimally invasive small incision deltoid split approach, avoid the stripping of the deltoid tendon and soft tissue, and reduce postoperative complications such as soft tissue adhesion and joint stiffness. The functional prognosis of patients with later joint replacement is guaranteed, and the shape structure of the torsion structure and the abdication slot 31 make the locking plate A better resist the torsional force of the humeral shaft and improve the fixation strength.

The head 1 is provided with a second locking hole 11 , the stem 2 is provided with a first locking hole 21 , and the fixing screw is matched with the first locking hole 11 and the second locking hole 21 . In the specific structure: the head 1 is designed with seven second locking holes 11, and each second locking hole is provided with a fixed angle of 90-130 degrees, so as to realize the use of divergent angle fixing screws, which can effectively support the humeral head and prevent internal Turn over and collapse; the trunk 2 is provided with three first locking holes 21 . A suture hole 22 is provided on the side of the trunk 2, so that the biceps humerus can be sutured and fixed, so as to neutralize the strength of the muscle and increase the fixation effect. The head 1 , the stem 2 and the torsion portion 3 are integrally formed, such as integrally formed by a steel plate, and the ends of the stem 2 are gradually thinned to enable minimally invasive insertion, so that screws can be implanted in the MIPPO minimally invasive surgery on the anterior side of the humerus. , to avoid the peeling of the soft tissue, to preserve the blood supply, in order to facilitate the healing of fractures.

In this embodiment, the front wall of the twisted portion 3 is arranged in a concave shape, and the concave arrangement constitutes the above-mentioned escape groove 31 , the escape groove 31 is arranged along the front wall of the twisted portion 3 , and the depth of the escape groove 31 is 5 -15mm, the axillary nerve can be avoided by the axillary nerve, the interference to the axillary nerve can be reduced, and the normal limb function can be preserved.

Please refer to FIG. 3 and FIG. 4 , first grooves 231 and 232 are recessed in the areas of the front wall and the back wall of the trunk 2 adjacent to the two first locking holes 21 , and the first groove 231 of the front wall is recessed. The bottom of the groove is a first arc-shaped segment structure 2311 with an opening facing down the back wall, and the groove bottom of the first groove 232 on the back wall includes a second arc-shaped segment 2321 with an opening facing the back wall and a The straight face section 2322 at both ends of the shaped section, on the one hand, the areas of the adjacent two first locking holes 21 of the front wall and the back wall are concavely provided with first grooves 231, 232, which pass through the first groove after being locked in the humerus. It can effectively reduce the stress concentration of the humerus and muscles, effectively avoid the deltoid muscle, reduce the risk of damage to the axillary nerve, the soft tissue damage in the surgical operation is small, and the implantation is convenient. On the other hand, the groove bottom of the first groove 231 is in the shape of a first arc The segment structure 2311 has a better effect of reducing the stress concentration. The groove bottom of the first groove 232 on the back wall includes a second arc-shaped section 2321 and a straight section 2322 connected to both ends of the second arc-shaped section, which reduces the stress concentration. The effect is better, and the avoidance effect is better. A second groove 233 is concavely formed in each of the adjacent two first locking holes 21 of the two side walls of the trunk 2 to further avoid the axillary nerve and reduce the stress concentration.

According to needs, an aiming fixation module can be configured to realize surgery to reduce the damage to the soft tissue, avoid the phenomenon of sliding teeth during the screwing process, ensure that the implanted screws are consistent with the preset angle, and there is no risk of screw penetration.

Embodiment 2

It differs from the first embodiment in that: please refer to FIG. 6 to FIG. 8 , the cadre 2 includes a first cadre section 23 , a second cadre section 24 and is fixed between the first cadre section 23 and the second cadre section 24 The torsion section 25 , the first dry section 23 and the second dry section 24 are also twisted and arranged by the torsion section 25 , and the structure of the torsion section 25 may be the same or different from that of the torsion portion 3 .

Suture holes 22 are provided on the side of the first stem section 23 and the side of the second stem section 24. The suture holes 22 of the first stem section 23 can suture and fix the biceps humerus, and the suture holes of the second stem section 24 22 can repair and suture the rotator cuff, neutralize the strength of the muscle, and increase the fixation effect.

Embodiment 3

The difference between it and the first embodiment is that: please refer to FIG. 9 , the accommodating groove 31 of the torsion part 3 has a structure with two large ends and a small one in the middle.

Embodiment 4

The difference between it and the second embodiment is that: please refer to FIG. 10 , the accommodating groove 31 of the torsion part 3 is of a structure with two large ends and a small one in the middle.

Embodiment 5

It differs from the first embodiment in that: please refer to FIG. 11 , the middle of the recessed groove 31 is arranged concavely to form a concave structure 32 . The ends respectively correspond to the corners of the two ports of the escape slot 3, so that the avoidance effect is better, and it is convenient for surgical locking.

Embodiment 6

It differs from the second embodiment in that: please refer to FIG. 12 , the middle of the recessed groove 31 is arranged concavely to form a concave structure 32 . The ends correspond to the corners of the two ports of the letting slot 3 respectively. In addition, the front wall and the back wall of the trunk 2 are located in several first locking holes 21 at the rear of the trunk: the regions of each adjacent two first locking holes 21 are recessed with first grooves 231, 232.

Embodiment 7

It differs from the sixth embodiment in that: please refer to FIG. 13 , the head, the side of the first stem section and the side of the second stem section are all provided with stitching grooves 221 , and the bottom of the stitching groove 221 is provided with a penetrating groove. At least one suture hole 22 .

Embodiment 8

Please refer to FIG. 14 and FIG. 15 , it differs from the sixth embodiment in that the locking plate M is the locking plate of the distal humerus fracture fixation device, the locking plate includes a stem 2 , and the stem 2 is provided with a plurality of first locking joints hole 21. Except for the three first locking holes 21 close to the head, on the front wall and the back wall of the trunk 2, in the remaining first locking holes: every area of two adjacent first locking holes 21 is recessed with The first grooves 231 and 232, the groove bottom of the first groove 231 on the front wall is a first arc-shaped segment structure with the opening facing downward, and the groove bottom of the first groove 232 on the back wall includes an opening facing downward. The second arc-shaped segment of the back wall and the straight-faced segments respectively connected at both ends of the second arc-shaped segment. A second groove 233 is concavely formed in each of the adjacent two first locking holes 21 of the two side walls of the stem 2 .

Embodiment 9

Please refer to FIG. 16 and FIG. 17 , the difference from the sixth embodiment is that the locking plate N is the locking plate of the olecranon fracture fixation device, the locking plate includes a stem 2 , and the stem 2 is provided with a plurality of first locking joints hole 21. Except for several first locking holes 21 close to the head of the front wall and the back wall of the trunk 2, in the remaining first locking holes: every area of two adjacent first locking holes 21 is recessed with The first grooves 231 and 232, the groove bottom of the first groove 231 on the front wall is a first arc-shaped segment structure with the opening facing downward, and the groove bottom of the first groove 232 on the back wall includes an opening facing downward. The second arc-shaped segment of the back wall and the straight-faced segments respectively connected at both ends of the second arc-shaped segment. A second groove 233 is concavely formed in each of the adjacent two first locking holes 21 of the two side walls of the stem 2 .

Embodiment ten

Please refer to FIG. 18 and FIG. 19 . The difference from the sixth embodiment is that the locking plate O is the locking plate of the distal femoral fracture fixation device. The locking plate includes a stem 2 , and the stem 2 is provided with a plurality of first locks. Connection hole 21 . Except for several first locking holes 21 close to the head of the front wall and the back wall of the trunk 2, in the remaining first locking holes: every area of two adjacent first locking holes 21 is recessed with The first grooves 231 and 232, the groove bottom of the first groove 231 on the front wall is a first arc-shaped segment structure with the opening facing downward, and the groove bottom of the first groove 232 on the back wall includes an opening facing downward. The second arc-shaped segment of the back wall and the straight-faced segments respectively connected at both ends of the second arc-shaped segment. A second groove 233 is concavely formed in each of the adjacent two first locking holes 21 of the two side walls of the stem 2 .

Embodiment 11

Please refer to FIGS. 20 to 22 . The difference from the sixth embodiment is that the locking plate P is the locking plate of the anterolateral fracture fixation device of the distal end of the tibia, and the locking plate includes a head 1 and a stem 2 . The trunk 2 is provided with a plurality of first locking holes 21 . Except for several first locking holes 21 close to the head of the front wall and the back wall of the trunk 2, in the remaining first locking holes: every area of two adjacent first locking holes 21 is recessed with The first grooves 231 and 232, the groove bottom of the first groove 231 on the front wall is a first arc-shaped segment structure with the opening facing downward, and the groove bottom of the first groove 232 on the back wall includes an opening facing downward. The second arc-shaped segment of the back wall and the straight-faced segments respectively connected at both ends of the second arc-shaped segment. A second groove 233 is concavely formed in each of the adjacent two first locking holes 21 of the two side walls of the stem 2 . The head 1 is provided with a suture groove 221, and the bottom of the suture groove 221 is provided with at least one suture hole arranged therethrough.

The above descriptions are only preferred embodiments of the present invention, so the scope of implementation of the present invention cannot be limited accordingly, that is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the description should still be covered by the present invention. within the range.

Claims (8)

1. Lockplate, including cadre, this cadre is equipped with first lock hole, its characterized in that: at least one surface wall of the area of the adjacent two first locking holes of the front surface wall and the back surface wall of the trunk part is concavely provided with a first groove; the first groove is concavely arranged in the area of each two adjacent first locking holes of the front wall and the back wall of the dry part; the first groove is concavely arranged in the area of two adjacent first locking holes on the front wall of the dry part, and the bottom of the first groove on the front wall is of a first arc-shaped section structure with an opening facing to the back wall; the first groove is concavely arranged in the area of two adjacent first locking holes of the back wall of the dry part, and the bottom of the first groove of the back wall comprises a second arc section with an opening facing the back wall and straight sections respectively connected to the two ends of the second arc section.

2. A locking plate according to claim 1, characterized in that: the area of each two adjacent first locking holes on the two side walls of the dry part is concavely provided with a second groove.

3. A locking plate according to claim 1, characterized in that: the side part of the cadre is provided with a sewing groove, and the bottom of the sewing groove is provided with a sewing hole which is arranged in a penetrating way.

4. A locking plate according to any of claims 1 to 3, characterized in that: the head part and the dry part are arranged in a twisting way through the twisting part, and the front surface wall of the twisting part is also concavely provided with a yielding groove; the front wall of the torsion part is arranged in a concave manner, the concave arrangement forms the abdicating groove, and the abdicating groove is arranged along the front wall of the torsion part in a penetrating manner.

5. A locking plate according to claim 4, characterized in that: the twisting arrangement comprises the head part and the stem part which are arranged in a staggered manner in a first direction and a second direction, the first direction is arranged along a direction parallel to the thickness of the head part, the second direction is arranged along a direction perpendicular to the thickness of the head part, and the twisting arrangement also comprises an included angle formed between the head part and the stem part.

6. A locking plate according to claim 5, characterized in that: the abdicating groove is of a structure with two large ends and a small middle.

7. A locking plate according to claim 5, characterized in that: the middle part of the abdicating groove is arranged in a concave way.

8. A locking plate as claimed in claim 5, characterized in that: the drying part comprises a first drying part section, a second drying part section and a twisting section fixedly arranged between the first drying part section and the second drying part section, and the first drying part section and the second drying part section are also arranged in a twisting way through the twisting section.

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