阅读说明：本技术 一种弹性微动锁定接骨板 (Elastic micromotion locking bone fracture plate ) 是由 查志杰 王秋根 张学森 邓国英 刘付刚 于 2019-12-20 设计创作，主要内容包括：本发明公开了一种弹性微动锁定接骨板,包括钢板、滑块以及滑槽,其特征是,所述钢板上沿钢板的纵向对应滑块开设有滑槽,滑块与滑槽一一对应且安装在滑槽内,滑块与滑槽之间形成有弹性微动间隙,滑块上设有弹性槽。本发明采用滑块上设有特殊弹性槽,可以对抗由肌肉收缩牵引导致的滑块位移,在一定范围内实现双向微动。本发明可通过特定的限制模块,在保障骨折断端必要稳定性,维持骨骼生理长度的同时,给予骨折断端确切的微动应力刺激以促进骨骼愈合。(The invention discloses an elastic micromotion locking bone fracture plate which comprises a steel plate, sliding blocks and sliding grooves and is characterized in that the sliding grooves are formed in the steel plate in the longitudinal direction of the steel plate and correspond to the sliding blocks, the sliding blocks correspond to the sliding grooves one by one and are installed in the sliding grooves, elastic micromotion gaps are formed between the sliding blocks and the sliding grooves, and elastic grooves are formed in the sliding blocks. The invention adopts the special elastic groove arranged on the sliding block, can resist the displacement of the sliding block caused by muscle contraction traction, and realizes bidirectional micromotion in a certain range. The invention can ensure the necessary stability of the fractured end and maintain the physiological length of the skeleton through a specific limiting module, and simultaneously, the invention gives definite micromotion stress stimulation to the fractured end to promote the healing of the skeleton.)

1. The utility model provides an elasticity fine motion locking coaptation board, includes steel sheet, locking piece, slider and spout, characterized by, the spout has been seted up along the vertical corresponding slider of steel sheet on the steel sheet, slider and spout one-to-one and mountable have the fine motion clearance between slider and the spout in the spout, are equipped with the elastic slot on the slider.

2. The elastic micromotion locking bone plate according to claim 1, characterized in that said steel plate is divided into two areas according to the gap between the broken bones, respectively: a first locking section corresponding to the upper section of the fractured bone and a second locking section corresponding to the lower end of the fractured bone.

3. The elastic micromotion locking bone plate of claim 1, wherein the locking pieces correspond to the sliding blocks one by one and are fixedly connected with the corresponding sliding blocks.

4. The elastic micromotion locking bone plate of claim 1, wherein said slide block is slidably mounted in said first locking section and is removably replaceable.

5. The elastic micromotion locking bone plate of claim 1, wherein said elastic groove is shaped like a spring, forming a plurality of gaps, each gap having the same size.

6. The elastic micromotion locking bone plate of claim 1, wherein the elastic groove forms an angle α with the surface of the steel plate, the angle α being in the range of 20 ° to 70 °.

7. The elastic micromotion locking bone plate of claim 1, wherein the sum of the micromotion gap and the elastic groove gap is 0.01-0.6 mm.

8. The elastic micromotion locking bone plate of claim 1, wherein said slider material comprises: titanium alloy material, stainless steel.

9. The elastic micromotion locking bone plate of claim 1, wherein the sliding groove comprises a first groove wall, a second groove wall and a third groove wall which is oppositely arranged and is embedded correspondingly with the second groove wall, and the embedded shape of the third groove wall is matched with that of the sliding block.

10. The elastic micromotion locking bone plate as set forth in claim 1, wherein the sliding groove penetrates through two opposite surfaces of the steel plate, and the sliding block further comprises two flat surfaces arranged up and down, and the two flat surfaces are respectively flush with the two surfaces of the steel plate penetrated by the sliding groove.

11. The elastic micromotion locking bone fracture plate as claimed in claim 1, wherein the slide block is provided with a mounting hole, two ends of the mounting hole respectively penetrate through two planes of the slide block, and the locking piece penetrates through the mounting hole and then is fixedly connected with the slide block.

12. The elastic micromotion locking bone plate according to claim 1, characterized in that said fixed connection means comprise: threaded connection and bolt connection.

13. The method of using the elastic micromotion locking bone plate as claimed in claim 1, which comprises the following steps:

s1, firstly, installing the sliding blocks in the sliding grooves in a one-to-one correspondence mode, and reserving gaps between the sliding blocks and the sliding grooves to enable the sliding blocks and the sliding grooves to form micro-motion gaps;

s2, connecting a locking piece with the upper bone segment and the lower bone segment to connect the bone fracture plate with the bone;

s3, the elastic groove is arranged on the sliding block and can stretch and retract to form an elastic micro-motion gap, so that the elasticity of the sliding block is increased to form the elastic micro-motion gap.

Technical Field

The invention relates to the field of orthopedic medical instruments, in particular to an elastic micromotion locking bone fracture plate.

Background

At present, the steel plate screw internal fixation is a common fracture treatment means clinically at present. Is indispensable in the clinical treatment of fracture at present. The steel plate has stronger fixation rigidity, and the fracture end position is firmly fixed after the steel plate is correctly used. However, when treating fracture, it is difficult to generate sufficient micro-motion stimulation to the gap between the fractured bones because the steel plate has high rigidity after fixation. In the prior art, the 'CN 209004177U micromotion locking bone fracture plate' improves the problems, a gap is reserved between a steel plate and a locking piece, the healing of the bone end is stimulated through the micromotion gap, but the stimulation healing effect of the bone end is not high due to insufficient elasticity of the gap.

Disclosure of Invention

In order to solve the problems, the invention provides an elastic micromotion locking bone fracture plate, which adopts an elastic groove arranged on a slide block to resist the slide block displacement caused by muscle contraction traction, realizes bidirectional micromotion in a certain range, ensures the necessary stability of a fracture end, maintains the physiological length of a skeleton and gives exact micromotion stress stimulation to the fracture end.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an elasticity fine motion locking coaptation board, includes steel sheet, locking piece, slider and spout, the spout has been seted up along the vertical corresponding slider of steel sheet on the steel sheet, slider and spout one-to-one and install in the spout, are formed with elasticity fine motion clearance between slider and the spout, are equipped with the elasticity groove on the slider.

Further, the steel plate is divided into two areas according to the gap between broken bones, which are respectively: a first locking section corresponding to the upper section of the fractured bone and a second locking section corresponding to the lower end of the fractured bone.

Furthermore, the locking pieces correspond to the sliding blocks one to one and are fixedly connected with the corresponding sliding blocks.

Further, the slider is slidably mounted within the first locking section and is removably replaceable.

Further, the elastic groove is spring-shaped, and a plurality of gaps are formed, and the gaps are the same in size.

Furthermore, the elastic groove and the surface of the steel plate form an included angle alpha, the degree is alpha, and the range of alpha is 20-70 degrees.

Further, the sum of the micro gap and the elastic groove gap is 0.01-0.6 mm.

Further, the slider material comprises: titanium alloy, stainless steel.

Furthermore, the sliding groove comprises a first groove wall, a second groove wall and a third groove wall, wherein the first groove wall and the second groove wall are oppositely arranged, the third groove wall is correspondingly embedded into the second groove wall, and the embedded shape of the third groove wall is matched with the sliding block, so that the sliding block is prevented from sinking.

Furthermore, the sliding groove penetrates through two opposite surfaces of the steel plate, the sliding block further comprises two planes which are arranged up and down, and the two planes are respectively flush with the two surfaces, which are penetrated through by the sliding groove, on the steel plate.

Furthermore, a mounting hole is formed in the sliding block, two ends of the mounting hole are respectively communicated with the two planes of the sliding block, and the locking piece penetrates through the mounting hole and then is fixedly connected with the sliding block.

Further, the fixed connection mode includes: threaded connection and bolt connection.

The invention has the beneficial effects that:

1. the sliding block is provided with an elastic groove, so that the sliding block displacement caused by muscle contraction traction can be resisted, and a better bidirectional micromotion effect can be realized within a certain range;

2. the sliding groove is provided with a third groove wall which is embedded inwards, so that the sliding block is ensured not to sink and not to contact with the skeleton;

3. the slide block can be detached and replaced, the elasticity and the micro-motion stress stimulation are adjusted in different time periods of the bone healing period, and the adjustability is higher;

4. the slide block is preferably made of titanium alloy material, the material is light, and the elastic groove is telescopic.

Drawings

FIG. 1 is a schematic view of the connection of an elastic micromotion locking bone plate with the upper and lower bone segments

FIG. 2 is a perspective view of an elastic micromotion locking bone plate steel plate

FIG. 3 is a perspective view of a slide block in an elastic micromotion locking bone fracture plate

FIG. 4 is a cross-sectional view of a longitudinal section of a slide block in an elastic micromotion locking bone plate

Description of reference numerals: 1. the steel plate 2, the sliding block 3, the elastic groove 4, the locking piece 5, the sliding groove 6, the first locking section 7, the second locking section 8, the first groove wall 9, the second groove wall 10, the side surface 11, the mounting hole 12, the upper skeleton section 13, the lower skeleton section 14, the broken bone gap 15 and the third groove wall.

Detailed Description

The utility model provides an elasticity fine motion locking coaptation board, includes steel sheet 1, locking piece 4, slider 2 and spout 5, the vertical slider 2 that corresponds of following steel sheet 1 on the steel sheet 1 has seted up spout 5, and slider 2 just installs in spout 5 with spout 5 one-to-one, is equipped with elastic groove 3 on the slider 2, has the fine motion clearance between slider 2 and the spout 5.

The invention provides an elastic micromotion locking bone fracture plate which comprises a steel plate 1, a sliding block 2 which is slidably arranged on the steel plate 1 and a locking piece 4 which is detachably connected with the sliding block 2, wherein the locking piece 4 is arranged on the steel plate 1 through the sliding block 2. In use, the locking element 4 is connected with the upper bone segment 12 and the lower bone segment 13, so that the connection between the upper bone segment 12 and the lower bone segment 13 in the fracture gap 14 is realized.

The steel plate 1 is of a substantially strip-shaped plate-shaped structure, and the steel plate 1 is divided into a first locking section 6 and a second locking section 7 according to a broken bone gap 14, wherein the first locking section 6 is correspondingly connected with the upper bone section 12 through the locking piece 4, and the second locking section 7 is correspondingly connected with the lower bone section 13 through the locking piece 4.

In this embodiment, the first locking section 6 and the second locking section 7 are both provided with the sliding grooves 5 along the length direction of the steel plate 1, the sliding blocks 2 are equal to the sliding grooves 5 in number, one sliding block 2 corresponds to one sliding groove 5, and the sliding block 2 is slidably mounted in the corresponding sliding groove 5 and can be replaced detachably, so that the sliding connection relationship between the sliding block 2 and the steel plate 1 is realized. It should be noted that the sliding grooves 5 of the first locking section 6 and the second locking section 7 are respectively located at two sides of the fractured bone gap 14, and one end of the sliding groove 5 away from the fractured bone gap 14 is referred to as a distal end, and correspondingly, one end of the sliding groove 5 close to the fractured bone gap 14 is referred to as a proximal end.

In the present embodiment, the slider 2 is substantially a block-shaped structure, the slider 2 includes a mounting hole 11 and an elastic groove 3, the elastic groove 3 forms an included angle with the surface of the steel plate 1, the degree is α, the range of α is 20 ° to 70 °, and in the present embodiment, α is 45 °. The mounting hole 11 is a through hole, and two ends of the mounting hole 11 penetrate through the slider 2.

The sliding groove 5 penetrates through two opposite surfaces of the steel plate 1, the sliding groove 5 comprises two first groove walls 8 and a second groove wall 9 which are oppositely arranged and a third groove wall 15 which is correspondingly embedded into the second groove wall 9, the two first groove walls 8 are arranged up and down along the length direction of the steel plate 1, the sliding block 2 is installed in the sliding groove 5 and is installed in place, and two planes of the sliding block 2 are respectively flush with the two surfaces, which are penetrated through by the sliding groove 5, on the steel plate 1. The end of the sliding groove 5 far away from the upper skeleton section 12 or the lower skeleton section 13 is used for installing the sliding block 2, in the embodiment, the sliding groove 5 on the first locking section 6 is obliquely and upwardly arranged along the installation direction of the corresponding sliding block 2, and the sliding groove 5 on the second locking section 7 is obliquely and downwardly arranged along the installation direction of the corresponding sliding block 2.

The number of the locking pieces 4 is the same as that of the sliding blocks 2, one locking piece 4 is correspondingly matched with one sliding block 2, and the locking pieces 4 are connected with the upper bone section 12 and the lower bone section 13 after penetrating through the mounting holes 11 of the matched sliding blocks 2. In this embodiment, the locking member 4 is a screw, the mounting hole 11 is a threaded hole, and the screw has an engaging effect on the upper bone segment 12 and the lower bone segment 13, thereby improving the connection stability. It should be understood that in other embodiments, not shown, the locking element 4 may be a pin, and the type of the locking element 4 is not limited, as long as the locking element 4 is fixedly connected to the upper bone segment 12 and the lower bone segment 13 after being connected to the mounting hole 11 of the slider 2.

In conclusion, the embedding effect of the sliding block 2 and the sliding groove 5 of the steel plate 1 and the occlusion effect of the locking piece 4 on the broken bone are realized, and the anti-withdrawing function of the sliding block 2 and the locking piece 4 is realized, namely, when the locking piece 4 is about to move along the direction C, the first groove wall 8 of the sliding groove 5 can block the side movement trend of the sliding block 2, so that the sliding block 2 is prevented from being withdrawn easily, and the connection stability is improved.

It can be understood that the specific shape of the slider 2 is not limited, and only the slider 2 can slide along the longitudinal direction of the steel plate 1 in a jogged manner, and when the slider 2 slides to any position in the sliding groove 5, the orthographic projection part of the steel plate 1 falls on the slider 2, so that when the slider 2 is driven by the locking piece 4 to move towards the direction C, part of the steel plate 1 can block the slider 2 from exiting. Based on the position of fig. 1, the orthogonal projection direction is from right to left. In the present embodiment, the orthographic projection of the steel plate 1 falls on the side surface of the slider 2, and the slider 2 is prevented from being withdrawn by the abutting action of the side surface and the steel plate 1.

After the bone fracture plate is used for connecting the upper bone section 12 and the lower bone section 13, the slide block 2 on the first locking section 6 can slide downwards or/and the slide block 2 on the second locking section 7 can slide upwards under the action of muscle tissue tension or body gravity pressurization, so that a section of movable displacement is generated at the broken bone gap 14 to form a sliding groove micro-motion gap. Meanwhile, the elastic groove on the sliding block 2 generates deformation and extension under the action of the pressurizing force, the sliding block 2 displacement caused by muscle contraction and traction is resisted, bidirectional micromotion is realized in a certain range, the upper bone section 12 and the lower bone section 13 are further close to each other, and the elastic micromotion stimulation is realized through the movable displacement.

In order to realize the above-mentioned elastic micro-motion stimulation, the sliding block 2 on the first locking section 6 is located at the far end of the corresponding sliding chute 5, or the sliding block 2 on the second locking section 7 is located at the far end of the corresponding sliding chute 5, or the sliding block 2 on the first locking section 6 and the sliding block 2 on the second locking section 7 are both located between the far end and the near end of the corresponding sliding chute 5, and the above-mentioned conditions can be met. Meanwhile, the elastic groove 3 is in an S-shaped spring shape to form a plurality of elastic gaps, the sum of the elastic gaps is the elastic micro-motion gap of the elastic groove 3, and the sum of the elastic micro-motion gap and the sliding groove micro-motion gap is the size of the movable displacement generated at the broken bone gap 14. When the elastic micro-gap is used specifically, the sliding blocks 2 with different side surface lengths can be replaced, and then the elastic micro-gap after operation is preset. The elastic micro gap is 0.01-0.6mm, in the embodiment, the micro gap is 0.45 mm. According to a large number of clinical trials, when the micro gap is 0.45mm, the fracture healing is most facilitated.

According to the elastic micromotion locking bone fracture plate, when the sliding block 2 slides to any position in the sliding groove 5, the orthographic projection part of the steel plate 1 can fall on the sliding block 2, so that when the sliding block 2 is about to withdraw, the sliding block 2 can be abutted against the steel plate 1, the sliding block 2 is prevented from being withdrawn easily, the connection stability is improved, in addition, the elastic micromotion stimulation function at the position of the broken bone gap 14 is realized through the elastic sliding action of the elastic groove 3 on the sliding block 2 in the sliding groove 5, the muscle resilience is enhanced, and the fracture healing is promoted.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.