Sliding sleeve type elastic pressure regulating steel plateTechnical Field
The invention belongs to the field of medical instruments, and particularly relates to a sliding sleeve type elastic pressure regulating steel plate.
Background
The bone fracture fixing steel plate and the fixing nail are used as internal fixing methods for many years in clinic, and in the clinical treatment process, a plurality of methods are used for fixing the bone fracture, wherein the steel plate fixing is one of the most commonly used methods, the traditional bone fracture steel plate fixes the steel plate on the bone through screws, so that the steel plate and the bone are integrated, but due to the stress shielding effect of the steel plate, the steel plate cannot provide proper stress stimulation to the fracture end in the later period of fracture repair, the delayed union, nonunion and slow bone mineralization are easy to occur, and the application of the steel plate and the fixing nail is limited. Therefore, designing a steel plate capable of adjusting the stress of the fractured ends and promoting fracture healing is a difficult problem to be solved clinically.
Disclosure of Invention
The invention aims to provide a sliding sleeve type elastic pressure regulating steel plate which has simple structure, convenient operation and easy fixation, can stimulate axial stress at a fracture end and accelerate bone healing.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a sliding sleeve formula elasticity pressure regulating steel sheet, includes the steel sheet body, is provided with the recess along the steel sheet body axial, be provided with the lower pressure regulating hole that runs through in the recess, be provided with in the recess and follow its endwise slip's movable plate, be provided with the last pressure regulating hole that corresponds with lower pressure regulating hole on the movable plate, go up the pressure regulating hole and install the pressure regulating bone screw in the lower pressure regulating nail hole, one side of the movable plate on the steel sheet body is provided with the pressure regulating device, the radial stress of the downthehole pressure regulating bone screw of pressure regulating is adjusted down through.
Further, the pressure regulating device is one of the following modes:
firstly, a fixed block is arranged in the groove, the fixed block is positioned on one side of the movable plate and is fixed in the groove by using a locking screw and a locking pin, or the fixed block is in interference fit with the groove, an elastic body is arranged between the fixed block and the movable plate, two sides of the elastic body are respectively provided with an elastic body base I and an elastic body base II, and the elastic body bases I and the elastic body bases II can adjust the radial stress of a pressure regulating bone screw in a pressure regulating hole by changing the length of the elastic body or the thickness of the elastic body base;
a fixed block is arranged in the groove, the fixed block is positioned on one side of the movable plate and is fixed in the groove by a fastening screw and a fastening nut, a long hole is formed in the groove, the fastening screw is arranged in the long hole, an elastic body is arranged between the fixed block and the movable plate, two sides of the elastic body are respectively provided with an elastic body base, namely an elastic body base I and an elastic body base II, and the radial stress of a pressure regulating bone screw in the pressure regulating hole can be regulated by changing the position of the fastening screw in the long hole;
a fixed block is arranged in the groove, one end of the movable plate is fixedly arranged to be a movable frame, a fixed block is fixedly arranged on a steel plate body in the movable frame and is fixed in the groove by a locking screw and a locking pin, or the fixed block is in interference fit with the groove, an elastic body is arranged between the fixed block and the movable frame, two sides of the elastic body are respectively provided with an elastic body base, namely an elastic body base I and an elastic body base II, and the radial stress of the pressure regulating bone screw in the pressure regulating hole can be regulated by changing the length of the elastic body or the thickness of the elastic body base;
fourthly, a fixed block is arranged in the groove, the fixed block is positioned on one side of the movable plate and is fixed in the groove by using a locking screw and a locking pin, or the fixed block is in interference fit with the groove, an elastic body is arranged between the fixed block and the movable plate, two sides of the elastic body are respectively provided with an elastic body base which is an elastic body base I and an elastic body base II, the elastic body base I is positioned between the fixed block and the spring, the spring base II is positioned between the spring and the movable plate, an inclined hole is formed in the fixed block, a jackscrew is arranged in the inclined hole, the head of the jackscrew is abutted against the spring base I, and the radial stress of the pressure regulating bone screw in the pressure regulating hole can be regulated by;
the groove is internally provided with a fixed block, the fixed block is positioned on one side of the movable plate and is fixed in the groove by using a locking screw and a locking pin, or the fixed block is in interference fit with the groove, a spring is arranged between the fixed block and the movable plate, two sides of the spring are respectively provided with a spring base, namely a spring base I and a spring base II, the spring base I is positioned between the fixed block and the spring, the spring base II is positioned between the spring and the movable plate, the fixed block is provided with the screw, the tail part of the screw is sleeved with a special-shaped gasket, one end of the special-shaped gasket is abutted against the spring base I, and the radial stress of the pressure regulating bone screw in the pressure regulating hole can be;
sixthly, the one end of recess is blind groove end, install the spring between blind groove end and the movable plate, the both sides of spring are provided with spring base respectively, are spring base one and spring base two respectively, spring base one is located between blind groove end and the spring, spring base two is located between spring and the movable plate, and the radial stress of downthehole pressure regulating bone screw is adjusted down to the length of accessible change spring, spring base's thickness.
One end of the groove is a blind groove end, an eccentric shaft is arranged at the blind groove end and is connected with the steel plate body in a sliding way,
install the spring between eccentric shaft and the movable plate, the both sides of spring are provided with spring base respectively, are spring base one and spring base two respectively, spring base one is located between eccentric shaft and the spring, spring base two is located between spring and the movable plate, and the accessible rotates the eccentric shaft and adjusts the radial stress of downthehole pressure regulating bone screw of pressure regulating down.
Further, the elastomer be one of spring, elasticity capsule, the elastomer can establish more than one in movable plate one end, also can respectively establish an elastomer and fixed block in every pressure regulating hole one end down of steel sheet body, all be provided with the fixed slot on fixed block, movable plate, the blind inslot end, the one end of spring base one, spring base two is located the fixed slot respectively, be provided with radial centre gripping auxiliary hole on spring base one, the spring base two respectively.
Further, still be provided with bone screw hole on the steel sheet body, the downthehole fixed bone screw that installs of bone screw, bone screw hole, down adjust the pressure hole be provided with one of following form:
arranging at least two bone screw holes and at least one lower pressure regulating hole on the steel plate body, wherein the bone screw holes and the lower pressure regulating holes are arranged in a straight line or in a staggered way;
one end of the steel plate body is provided with a plurality of bone screw holes, the other end of the steel plate body is provided with a plurality of lower pressure regulating holes, the bone screw holes and the lower pressure regulating holes are symmetrically arranged on the steel plate body, and the lower pressure regulating holes can be provided with a communicated through hole;
one end of the steel plate body can be designed into a shape of an anatomical plate consistent with the anatomical shape of the joint part of the bones of the limbs of the human body, raft holes can be arranged at the edge of the bone screw holes of the anatomical plate, and at least one lower pressure regulating hole is arranged at the other end of the steel plate body;
the bone screw hole that sets up on the steel sheet body can be established to pressure regulating hole down, the movable plate is established to and the whole sliding fit of steel sheet body, the one end of movable plate is fixed to be set up to removing the frame, fixed mounting has the fixed block on the steel sheet body in removing the frame to fix in the recess with locking screw, locking pin, perhaps fixed block and recess interference fit, the fixed block with remove and install the elastomer between the frame.
Furthermore, the section of the moving plate along the width direction is T-shaped, rectangular or trapezoidal, and a groove matched with the section of the moving plate is arranged on the steel plate body.
Further, the bone screw hole on the steel plate body and the upper bone screw hole on the moving plate are provided with a non-threaded nail hole or a threaded locking nail hole, or are provided with a combined non-threaded nail hole and a threaded locking nail hole.
Further, the steel plate body is a straight steel plate or an arc-shaped steel plate which is consistent with the shape of the skeleton and has a certain radian, and the upper surface and the lower surface of the steel plate body are radially provided with cambered surfaces having a certain radian.
Furthermore, an auxiliary plate is fixedly arranged in the groove and on one side of the moving plate, an upper bone screw hole corresponding to the bone screw hole is formed in the auxiliary plate, and the auxiliary plate and the steel plate body can be arranged in an integrated structure or in a split structure.
Furthermore, the steel plate body, the moving plate and the auxiliary plate are all provided with Kirschner wire round holes for temporarily fixing bones.
Furthermore, a concave surface can be arranged on the side of the lower surface of the steel plate body, so that the compression on the periosteum is reduced.
The invention has the advantages of easy fixation and convenient operation. The steel plate body is fixed on a bone through the fixing screw hole and the bone screw in the pressure regulating screw hole, the distance between the bone screw in the pressure regulating screw hole and the bone screw in the fixing screw hole is finely regulated through the elastic pressure regulating device in the lower pressure regulating hole, the purposes of regulating the stress of the fracture end and stimulating organism tissues to accelerate to form new bones so as to achieve the purpose of fracture healing are achieved, the stress shielding of the fracture end is avoided, and the fracture healing is accelerated.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another angle;
FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 4 is a schematic view of the structure of FIG. 3 from another angle;
FIG. 5 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a fourth embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view along AA in FIG. 6;
FIG. 8 is a schematic structural diagram of a fifth embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view taken along direction BB of FIG. 8;
FIG. 10 is a schematic structural diagram of a sixth embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a seventh embodiment of the present invention;
FIG. 12 is a schematic structural diagram of an eighth embodiment of the present invention;
FIG. 13 is a schematic structural diagram of a ninth embodiment of the present invention;
FIG. 14 is a schematic structural diagram of a tenth embodiment of the present invention;
FIG. 15 is a schematic structural diagram of an eleventh embodiment of the present invention;
FIG. 16 is a schematic structural diagram of a twelfth embodiment of the present invention;
FIG. 17 is a schematic structural diagram of a thirteenth embodiment of the present invention;
FIG. 18 is a schematic structural diagram of a fourteenth embodiment of the present invention;
FIG. 19 is a schematic structural view of a steel plate on the outer side of the distal fibula;
FIG. 20 is a schematic structural view of a lateral proximal femoral plate;
FIG. 21 is a schematic structural view of a lateral distal femoral plate;
FIG. 22 is a schematic structural view of a femoral distal condyle support plate;
FIG. 23 is a schematic structural view of a first medial distal tibial steel plate;
FIG. 24 is a structural view of a second medial distal tibial steel plate;
fig. 25 is a schematic structural view of a lateral distal humeral plate;
fig. 26 is a schematic structural view of a medial humeral distal plate;
fig. 27 is a schematic structural view of a proximal humeral plate;
FIG. 28 is a schematic structural view of a steel plate on the outer side of the distal fibula;
FIG. 29 is a schematic structural view of a medial proximal tibial L-shaped steel plate;
FIG. 30 is a schematic structural view of a distal anterolateral tibial plate;
FIG. 31 is a schematic view of a steel plate at the volar side of the distal radius;
FIG. 32 is a schematic view of the structure of the two distal radius volar plates;
FIG. 33 is a schematic view of the structure of the three distal radius volar plates;
FIG. 34 is a schematic view of the structure of the four volar radial plates;
FIG. 35 is a schematic structural view of a dorsal T-shaped distal radius plate;
FIG. 36 is a schematic structural view of a phalangeal T-shaped steel plate;
FIG. 37 is a schematic structural view of an L-shaped phalangeal steel plate;
FIG. 38 is a schematic structural view of a medial proximal tibial T-shaped steel plate;
FIG. 39 is a schematic structural view of a proximal lateral tibial T-shaped steel plate;
FIG. 40 is a schematic structural view of a medial proximal tibial L-shaped steel plate;
FIG. 41 is a schematic view of the structure of the medial proximal tibial golf plate;
FIG. 42 is a schematic structural view of a proximal lateral tibial golf plate;
FIG. 43 is a schematic structural view of a proximal lateral tibial L-shaped steel plate
FIG. 44 is a schematic structural view of an ulnar proximal steel plate;
in the figure, 1-an upper pressure regulating hole, 2-a Kirschner wire round hole, 3-a groove, 4-a steel plate body, 5-a spring base I, 6-a spring, 7-a locking screw, 8-a lower pressure regulating hole, 9-a fixing block, 10-a screw hole, 11-a jackscrew, 12-a regulating screw, 13-a moving plate, 14-a fastening screw, 15-a fastening nut, 16-an elongated hole, 17-a moving frame, 18-a bone screw hole, 19-an auxiliary plate, 20-an upper bone screw hole, 21-a clamping auxiliary hole, 22-a spring base II, 23-a special-shaped gasket, 24-an eccentric shaft and 25-a raft hole row.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1, as shown in fig. 1, a sliding sleeve type elastic pressure regulating steel plate comprises a steel plate body 4, wherein a kirschner wireround hole 2 is formed in the steel plate body 4, and the kirschner wireround hole 2 is used for temporarily fixing a bone. A groove 3 is formed in the axial direction of the steel plate body 4, and a lowerpressure regulating hole 8 is formed in the groove 3. As shown in fig. 2, abone screw hole 18 is further formed on the steel plate body 4, a fixing bone screw is installed in thebone screw hole 18, and thebone screw hole 18 formed on the steel plate body 4 may be a non-threaded nail hole or a threaded locking nail hole, or a combination of a non-threaded nail hole and a threaded locking nail hole. The one end of steel sheet body 4 sets up threebone screw hole 18 in succession, and the other end sets up threepressure regulating hole 8 down in succession,bone screw hole 18, lowerpressure regulating hole 8 symmetry set up on steel sheet body 4, install the pressure regulating bone screw in the pressure regulatingnail hole 8 down. A movingplate 13 and anauxiliary plate 19 which can slide along the groove 3 are arranged in the groove and are respectively arranged at two ends of the steel plate body 4. Themovable plate 13 and theauxiliary plate 19 are respectively provided with upper pressure regulating holes 1 which are in one-to-one correspondence with the lowerpressure regulating holes 8 and the bone screw holes 18, one side of themovable plate 13 on the steel plate body is provided with a pressure regulating device, and the pressure regulating device regulates the radial stress of the pressure regulating bone screws in the lower pressure regulating holes by regulating the stress of themovable plate 13.
The specific form of pressure regulating device is: install fixedblock 9 in recess 3, fixedblock 9 is located one side ofmovable plate 13 to fix in recess 3 with lockingscrew 7, install the elastomer betweenfixed block 9 and themovable plate 13, the elastomer be one kind ofspring 6, elasticity capsule,spring 6 is selected to this embodiment, all be provided with the fixed slot on fixedblock 9, themovable plate 13, the both sides ofspring 6 are provided with the elastomer base respectively, are spring body base one 5 and spring base two 22 respectively, the one end of spring base one 5, spring base two 22 is located the fixed slot respectively, be provided with radial centre grippingauxiliary hole 21 on spring base one 5, the spring base two 22 respectively. The radial stress of the pressure regulating bone screw in the pressure regulating hole can be regulated by changing the length of thespring 6 or the thicknesses of the spring base I5 and thespring base II 22.
Anauxiliary plate 19 is fixedly provided in the recess 3, an upperbone screw hole 20 corresponding to thebone screw hole 18 is provided in theauxiliary plate 19, and theauxiliary plate 19 and the steel plate body 4 may be provided integrally or separately.
When in use, firstly, pressure regulating bone screws are arranged in the upper pressure regulating hole 1 and the lower pressure regulating hole, and fixed bone screws are arranged in the bone screw holes 18 and the upper bone screw holes 20; then, the pressure regulating bone screw and the fixing bone screw are fixed on the bone, and finally, the pressure regulating device is regulated to achieve the purpose of micro-regulating the radial stress of the pressure regulating bone screw, stimulating organism tissues and forming new bones so as to achieve the purpose of bone lengthening.
Embodiment 2 differs from embodiment 1 in the pressure regulating device, and as shown in fig. 3 and 4, the pressure regulating device of the embodiment is as follows: install fixedblock 9 in recess 3, fixedblock 9 is located one side ofmovable plate 13, the one end of steel sheet body 4 to fix in recess 3 with fastening screw 14, fasteningtight nut 15, be provided withelongated hole 16 in the recess 3, fastening screw 14 installs inelongated hole 16, installspring 6 betweenfixed block 9 and themovable plate 13, the both sides ofspring 6 are provided with the elastomer base respectively, arespring body base 5 and spring base two 22 respectively, and the accessible is changed the length ofspring 6, spring base's thickness, is changed the radial stress of the downthehole pressure regulating bone screw of pressure regulating under the position control of fastening screw 14 inelongated hole 16.
Embodiment 3, the difference between this embodiment and embodiment 1 lies in the pressure regulating device, as shown in fig. 5, the pressure regulating device of this embodiment is as follows: install fixedblock 9 in recess 3, the fixedremoval frame 17 that is provided with of one end ofmovable plate 13, fixed mounting has fixedblock 9 on the steel sheet body 4 in theremoval frame 17 to fix in recess 3 with lockingscrew 7, installspring 6 between fixed block and theremoval frame 17, the both sides ofspring 6 are provided with the elastomer base respectively, are spring base one and spring base two respectively, and the radial stress of downthehole pressure regulating bone screw is adjusted down to the length that the accessible changedspring 6 or spring base's thickness.
Embodiment 4, the difference between this embodiment and embodiment 1 lies in the pressure regulating device, and as shown in fig. 6 and 7, the pressure regulating device of this embodiment is as follows: install fixedblock 9 in the recess 3, fixedblock 9 is located the one end ofmovable plate 13 to fix in recess 3 with lockingscrew 7, installspring 6 betweenfixed block 9 and themovable plate 13, the both sides ofspring 6 are provided with the elastomer base respectively, are elastomer base one and elastomer base two respectively, spring base one 5 is located betweenfixed block 9 andspring 6, spring base two 13 is located betweenspring 6 and themovable plate 13. Be provided with the inclined hole onfixed block 9, install jackscrew 11 in the inclined hole, the head of jackscrew 11 is contradictedspring base 5, and the radial stress of downthehole pressure regulating bone screw of pressure regulating is adjusted down to the degree of depth of 11 screws in accessible adjustment jackscrew.
Embodiment 5, the difference between this embodiment and embodiment 1 lies in the pressure regulating device, as shown in fig. 8 and 9, the pressure regulating device of this embodiment is as follows: install fixedblock 9 in recess 3, fixedblock 9 is located the one end ofmovable plate 13 to fix in recess 3 with lockingscrew 7, installspring 6 betweenfixed block 9 and themovable plate 13,spring 6's both sides are provided with the elastomer base respectively, are spring body base one 5 and spring base two 22 respectively, spring body base one 5 is located betweenfixed block 9 and thespring 6, spring base two 22 are located betweenspring 6 and themovable plate 13, install adjustingscrew 12 on the fixedblock 9, the cover is equipped with special-shapedgasket 23 on adjustingscrew 12's the afterbody, makes special-shapedgasket 23's one end butt in elastomer base one, the radial stress of the downthehole pressure regulating bone screw of pressure regulating under the length adjustment of special-shapedgasket 23 is changed to the accessible.
Embodiment 6, the difference between this embodiment andembodiment 5 lies in the difference of the pressure regulating device, as shown in fig. 10, one end of the groove 3 is a blind groove end, the blind groove end is provided with aneccentric shaft 24, theeccentric shaft 24 is slidably connected with the steel plate body 4, aspring 6 is installed between theeccentric shaft 24 and the movingplate 13, two sides of thespring 6 are respectively provided with a spring base, which are afirst spring base 5 and asecond spring base 22, respectively, thefirst spring base 5 is located between theeccentric shaft 24 and thespring 6, thesecond spring base 22 is located between thespring 6 and the moving plate 4, and the radial stress of the pressure regulating bone screw in the lowerpressure regulating hole 8 can be regulated by rotating theeccentric shaft 24.
Embodiment 7, the difference between this embodiment and embodiment 1 lies in the pressure regulating device, as shown in fig. 11, the pressure regulating device of this embodiment is as follows: the one end of recess 3 is blind groove end, installspring 6 between blind groove end and themovable plate 13, the both sides ofspring 6 are provided withspring 6 base respectively, arespring body base 5 and spring base two 22 respectively, all be provided with the fixed slot on blind groove end and the terminal surface that removesend 13, elastomer one 5 is located the fixed slot of blind groove end, and elastomer two 22 are located the fixed slot on the movable plate, and the radial stress of downthehole pressure regulating bone screw is adjusted down to the accessible length of changingspring 6, spring base's thickness.
Embodiment 8, as shown in fig. 12, the difference between this embodiment and embodiment 1 is that the number of the fixing grooves provided on the fixingblock 9 and the movingplate 13 and the number of thesprings 6 may be more than one, and in this embodiment, the number of the fixing grooves provided on the fixingblock 9 and the movingplate 13 is three.
Embodiment 9, as shown in fig. 13, the present embodiment is different from embodiment 1 in the number of the pressure adjusting means, and in the present embodiment, one movingplate 9 is installed above each lower pressure adjusting hole, and one pressure adjusting means is installed at one side of each movingplate 9.
Example 10, as shown in fig. 14, the present example is different from example 1 in that a plurality of lowerpressure adjusting holes 8 may be formed at one end of a steel plate body 4, a plurality of bone screw holes 18 may be formed at the other end, and a movingplate 13 may not be provided at the end where the bone screw holes 18 are formed. In this embodiment, three lower pressure-regulatingholes 8 and three bone screw holes 18 are provided, and the movingplate 13 is provided only above the lower pressure-regulatingholes 8.
The steel plate body of the above embodiment may be provided with the kirschner wireround hole 18 for temporarily fixing the steel plate body 1 on the human skeleton, as shown in fig. 15, the steel plate body 1 may be set to have a radian matching with the human skeleton. A plurality of concave surfaces can also be arranged on the steel plate body 1 for reducing the oppression on the periosteum. As shown in fig. 16, 17 and 18, the section of the moving plate in the width direction may be T-shaped, rectangular, trapezoidal, etc., and the steel plate body is provided with a groove matching the section of the movingplate 13. As shown in fig. 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, one end of the steel plate body can be configured as an anatomical steel plate which is consistent with the anatomical morphology of the four limbs bones of the human body and has a certain radian, such as a fibula distal lateral steel plate, a femur proximal lateral steel plate, a femur distal condyle support steel plate, a tibia distal medial steel plate one, a tibia distal medial steel plate two, a humerus distal lateral steel plate, a humerus distal medial steel plate, a humerus proximal steel plate, a fibula distal lateral steel plate, a tibia proximal L-shaped steel plate, a tibia distal anterolateral steel plate, a tibia distal palmar one-side steel plate, a radius distal palmar two-side steel plate, a radius distal palmar three-side steel plate, a radius palmar four-side steel plate, a, A radius far-end back side T-shaped steel plate, a phalanx L-shaped steel plate, a tibia near-end inner side T-shaped steel plate, a tibia near-end outer side T-shaped steel plate, a tibia near-end inner side L-shaped steel plate, a tibia near-end inner side golf steel plate, a tibia near-end outer side L-shaped steel plate and an ulna near-end steel plate, or raft holes can be formed in the steel plates, as shown in fig. 30.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the embodiments of the present invention, such as increasing the number and position of the elastic pressure-adjusting devices, the number of the moving plates, the fixing manner of the fixing blocks, the variation of the arrangement of the bone screw holes and the downward-adjusting nail holes, or other combinations in the first, second, third and fourth embodiments, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.