CN118356242B - Low-notch external fixation balance bracket - Google Patents
Low-notch external fixation balance bracket Download PDFInfo
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- CN118356242B CN118356242B CN202410796614.9A CN202410796614A CN118356242B CN 118356242 B CN118356242 B CN 118356242B CN 202410796614 A CN202410796614 A CN 202410796614A CN 118356242 B CN118356242 B CN 118356242B
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- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 208000027418 Wounds and injury Diseases 0.000 description 14
- 206010052428 Wound Diseases 0.000 description 13
- 208000010392 Bone Fractures Diseases 0.000 description 11
- 206010017076 Fracture Diseases 0.000 description 11
- 210000001503 joint Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 7
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- 230000000694 effects Effects 0.000 description 5
- 229920002530 polyetherether ketone Polymers 0.000 description 5
- 230000029663 wound healing Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 208000003251 Pruritus Diseases 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 206010048038 Wound infection Diseases 0.000 description 2
- 230000007803 itching Effects 0.000 description 2
- 210000002414 leg Anatomy 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 210000002303 tibia Anatomy 0.000 description 2
- 238000001467 acupuncture Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
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- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 206010043827 tibia fracture Diseases 0.000 description 1
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Abstract
The invention discloses a low-notch external fixation balance bracket, which comprises two groups of unilateral bone screw groups and a connecting component connected between the two groups of unilateral bone screw groups, wherein the unilateral bone screw groups comprise a first bone screw, a second bone screw and a connecting rod connected between the first bone screw and the second bone screw; the first bone screw comprises a first screw body and a first connecting end, and the first connecting end comprises a sphere, an outer ring cap and a compression nut; the second bone screw comprises a second screw body and a second connecting end, the second connecting end comprises a connecting block, a threaded ring and a locking nut, and the connecting block is sleeved on the connecting rod in a sliding way; the connecting part comprises a sliding part and a connecting compression bar, wherein the sliding part is provided with two groups and is respectively arranged on the two groups of connecting bars in a sliding way.
Description
Technical Field
The invention relates to a bone fixing system, in particular to a low-notch external fixing balance bracket.
Background
In orthopedic surgery, it is often necessary to maintain a certain relative fixation of fractured bones by means of an external bone fixation device in order to properly join the bones for healthy healing of the bones.
In the existing fixing system, the skeleton external fixation device which is generally used mainly comprises an external fixation support and metal bone screws matched with the external fixation support, after a plurality of groups of bone screws are connected with a broken part of tibia, one end of each bone screw extending to the outside of the skin is connected with the fixation support, the fixation support can position the bone screws and is used for supporting and protecting the fracture part, injury aggravated in movement is avoided, but the existing fixation support generally needs to be customized according to the fracture condition or needs to bend a connecting part of the fixation support according to positioning requirements when in use, and is inconvenient.
Disclosure of Invention
The invention aims to provide a low-notch external fixation balance bracket so as to solve the technical problems.
In order to achieve the above purpose, the present invention provides the following technical solutions: the low-notch external fixation balance bracket comprises two single-side bone screw groups and a connecting part connected between the two single-side bone screw groups, wherein the single-side bone screw groups comprise a first bone screw, a second bone screw and a connecting rod connected between the first bone screw and the second bone screw;
The first bone screw comprises a first screw body and a first connecting end, the first connecting end comprises a ball body, an outer ring cap and a compression nut, the ball body is fixed at the tail end of the first screw body, an inner hexagonal groove is formed in one end, far away from the first screw body, of the ball body, a threaded hole and a U-shaped groove penetrating through the outer ring cap are formed in the top of the outer ring cap, one end of the connecting rod is clamped into the U-shaped groove, and the compression nut is in threaded connection with the threaded hole and used for compressing the connecting rod;
The second bone screw comprises a second screw body and a second connecting end, the second connecting end comprises a connecting block, a threaded ring and a locking nut, the connecting block is slidably sleeved on the connecting rod, a compression bolt for compressing the connecting rod is arranged on the connecting block, the connecting block and the threaded ring are sleeved on the second screw body, a through hole for the threaded ring to pass through is formed in the connecting block, an annular body is arranged at the bottom of the threaded ring, an expanding groove for the annular body to clamp in is formed in the bottom of the through hole, and the locking nut is connected onto the threaded ring and drives the annular body to compress the second screw body through threaded connection;
the connecting part comprises a sliding part and a connecting compression bar, the sliding part is provided with two groups of connecting rods and is respectively arranged on the two groups of connecting rods in a sliding mode, the connecting rods are used for connecting the two groups of sliding parts, and the sliding part is provided with a driving part used for compressing the connecting compression bar and driving the sliding part to compress the connecting rods.
Preferably, the annular body is provided with a partition groove in a penetrating mode, the second bone screw further comprises a first compression ring and a second compression ring, the two sides of the top of the connecting block, which are located on the through hole, are provided with first tooth parts, the two sides of the bottom of the second compression ring are provided with second tooth parts, and the upper side and the lower side of the first compression ring are respectively provided with tooth grooves for the first tooth parts and the second tooth parts to be clamped in.
Preferably, the first tooth part and the second tooth part are arranged in an outward convex arc shape, and the tooth slot is matched with the first tooth part and the second tooth part.
Preferably, the sliding part comprises a base block and side pressing blocks symmetrically arranged on two sides of the bottom of the base block, sliding holes for connecting rods to slide are formed between the two groups of side pressing blocks, through holes for connecting compression rods to penetrate are formed between the side pressing blocks and the base block, and the driving part comprises synchronous bolts which are connected onto the base block in a threaded mode and used for compressing and connecting the compression rods.
Preferably, the bilateral symmetry at base block top is equipped with the screw, and the screw of both sides screw revolves to opposite, and the synchronizing bolt is equipped with two sets of and respectively threaded connection in both sides screw, and the base block is located both sides screw bottom and is equipped with the intercommunication district, and two sets of synchronizing bolt bottoms are located the intercommunication district and are located and are equipped with local tooth on synchronizing bolt's the outer wall, and the local tooth meshing of two sets of synchronizing bolt sets up.
Preferably, the two sides of the top of the base block are symmetrically provided with inclined planes, the screw holes on the two sides are respectively arranged on the inclined planes on the two sides, the screw holes are axially perpendicular to the inclined planes, one end of the synchronous bolt, which is positioned in the base block, is provided with a parallel surface, the parallel surface is arranged at an angle with the top of the synchronous bolt and is parallel to the plane part of the top of the base block, the tooth arrangement of the local teeth is gradually shortened from one side to the other side, when the two groups of synchronous teeth reversely rotate, the local teeth are gradually meshed to the shortest position of the tooth by the longest position of the tooth, and the parallel surfaces at the bottoms of the two groups of synchronous bolts are positioned at the same horizontal position when the local teeth of the two groups of synchronous bolts are meshed.
Preferably, the outer wall of the first nail body and the outer wall of the second nail body are respectively provided with an outer wall groove, the outer wall grooves are sleeved with a lantern ring, springs are respectively sleeved at the upper end and the lower end of the outer wall grooves, and a plurality of groups of massage needles are arranged on the periphery of the end face of the bottom of the lantern ring.
Preferably, a plurality of groups of first strip-shaped grooves are formed in the inner wall of the outer wall groove along the circumferential side, a plurality of groups of balls are arranged on the inner wall of the lantern ring along the circumferential side in a rotating mode, the balls are located in the first strip-shaped grooves in an embedded mode outside the lantern ring and are in sliding connection with the first strip-shaped grooves, and gaps are formed between the inner circumferential wall of the lantern ring and the inner wall of the outer wall groove.
Preferably, the upper and lower bilateral symmetry of outer wall groove is equipped with the regulating part, and the regulating part includes annular clamp plate and slide bar, and outer wall groove department is located to two sets of annular clamp plate cover and is located one side that two sets of springs kept away from each other, the upper and lower both ends inner wall of outer wall groove all is equipped with the gliding second bar groove of confession slide bar, slide bar and second bar groove interference fit.
Preferably, the first nail body and the second nail body are both provided with an outer sleeve in an axial sliding manner, the bottom of the outer sleeve is provided with an annular expansion plate, and the outer sleeve is connected with a fixing bolt in a threaded manner.
Compared with the prior art, the invention has the beneficial effects that:
after the end parts of the first bone screw and the second bone screw are fixed with the bone, an integral fixing bracket can be formed by connecting the end parts of the first bone screw and the second bone screw through a connecting part, wherein the connecting part consists of a base block and a side pressure block, a synchronous bolt is connected to the base block through threads, the connecting pressure rod and a connecting rod can be locked and fixed, the integral fixing bracket is stable, two groups of synchronous bolts which are tightly pressed on the base block are arranged on the synchronous bolt of the connecting pressure rod and are connected through partial tooth meshing, and parallel surfaces at the bottoms of the two groups of synchronous bolts are positioned at the same horizontal overlapping position, the synchronous bolts at the two sides are forced to rotate at the same time, so that the balance of force is realized, and the phenomenon that the fixing bracket swings caused by the rotation of the connecting pressure rod driven by the single synchronous bolt locking process is avoided;
The connecting block, the first compression ring, the second compression ring, the threaded ring and the locking are arranged on the second nail body, the first tooth part is arranged on the connecting block, the second tooth part is arranged on the second compression ring, the tooth slot for clamping the first tooth part and the second tooth part is arranged on the first compression ring, the threaded ring can be driven to move and compress the annular body through rotation and locking, the second nail body is fixed, and the parts after locking are more stable;
Through slide about first nail body and second nail body and set up the lantern ring, set up the massage needle on the lantern ring, first nail body and second nail body are located the upper and lower both sides of lantern ring and set up the spring, can realize acupuncture massage effect at fracture person's walking process, use when wound healing helps improving local comfort level.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic overall construction of an embodiment of the present invention;
FIG. 2 is an overall exploded view of a first embodiment of the present invention;
FIG. 3 is an exploded view of the present invention highlighting a synchronizing bolt;
FIG. 4 is a schematic illustration of the present invention highlighting partial tooth engagement of two sets of synchronizing bolts;
FIG. 5 is a schematic view showing the positions of PEEK pads and connecting rods according to the present invention;
FIG. 6 is a schematic overall structure of a second embodiment of the present invention;
fig. 7 is an overall exploded view of a second embodiment of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. A unilateral set of bone screws; 11. a first bone screw; 111. a first pin body; 112. a first connection end; 1121. a sphere; 1122. an outer ring cap; 1123. a compression nut; 12. a second bone screw; 121. a second pin body; 122. a second connection end; 1221. a joint block; 1222. a threaded ring; 1223. a lock nut; 1224. a first press ring; 1225. a second press ring; 13. a connecting rod; 2. a connecting member; 21. a sliding part; 211. a base block; 212. a side pressing block; 22. connecting a compression bar; 3. a U-shaped groove; 4. a through hole; 5. an annular body; 6. a first tooth portion; 7. a second tooth portion; 8. tooth slots; 9. a slide hole; 31. perforating; 32. a synchronizing bolt; 33. a screw hole; 34. partial teeth; 35. an inclined plane; 36. parallel surfaces; 37. an outer wall groove; 38. a collar; 39. a spring; 40. a massage needle; 41. a first bar-shaped groove; 42. a ball; 43. an annular pressing plate; 44. a slide bar; 45. a second bar-shaped groove; 46. a jacket; 461. a first half jacket; 462. a second half jacket; 47. a fixing bolt; 48. an annular expansion plate; 481. a first half-spread plate; 482. a second semi-expansion plate; 49. an abutting plate; 50. a butt joint groove; 51. a bump; 52. a compression bolt; 53. a PEEK pad; 54. and (5) mounting holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, the present invention provides a first embodiment:
Referring to fig. 1 and 2, a low-notch external fixation balance bracket comprises two single-side bone screw sets 1 and a connecting component 2 connected between the two single-side bone screw sets 1, wherein when a tibia fracture is fixed, one single-side bone screw set 1 is arranged on each side of the fracture, and the single-side bone screw set 1 comprises a first bone screw 11, a second bone screw 12 and a connecting rod 13 connected between the first bone screw 11 and the second bone screw 12;
The first bone screw 11 comprises a first nail 111 and a first connecting end 112, wherein the first connecting end 112 is used for fixing one end of a connecting rod 13, the first connecting end 112 can be adjusted in space position after being fixed with one end of the connecting rod 13, the other end of the connecting rod 13 is better connected with the second bone screw 12, in order to enable the first connecting end 112 to achieve an adjusting effect, the first connecting end 112 comprises a ball 1121, an outer ring cap 1122 and a compression nut 1123, the ball 1121 is fixed at the tail end of the first nail 111 and one end far away from the first nail 111 is provided with an inner hexagonal groove, a medical staff can lock the first nail 111 into a tibia by using a wrench, the top of the outer ring cap 1122 is provided with a threaded hole and a U-shaped groove 3 penetrating through the outer ring cap 1122, one end of the connecting rod 13 is clamped into the U-shaped groove 3, the U-shaped groove 3 can be matched with the connecting rod 13, the clamping of the connecting rod 13 is convenient, the compression nut 1123 is in the threaded hole is used for clamping the connecting rod 13 into the U-shaped groove 3, the ball 1121 is compressed after the connecting rod 13 is clamped into the U-shaped groove 3, the ball 1121 is arranged at the bottom of the outer ring cap 1122 for limiting the rotation of the ball 1121 relative to the ball 1121;
The second bone screw 12 includes a second nail 121 and a second connecting end 122, the second connecting end 122 is used for fixing the other end of the connecting rod 13, the second connecting end 122 includes a connecting block 1221, a threaded ring 1222 and a locking nut 1223, the connecting block 1221 is slidably sleeved on the connecting rod 13, and the connecting block 1221 is provided with a compression bolt 52 for compressing the connecting rod 13, which needs to be described as follows: the connecting rod 13 is provided with a key groove at the installation position of the compression bolt 52, the key groove is internally provided with the PEEK pad 53, the middle part of the PEEK pad 53 is provided with a mounting hole 54 for the compression bolt 52 to be in threaded connection (the bone-like modulus of the PEEK pad 53 is a key reason for important supplement of the bone surgery, in the application, the modulus can maintain the stability of an external fixing support, meanwhile, the modulus close to the human skeleton enables the whole fixing system to keep certain micro-motion, the growth of new bone is promoted, the defect of insufficient density of new bone under stress shielding factors is avoided), the connecting block 1221 and the threaded ring 1222 are both sleeved on the second nail body 121, the connecting block 1221 is provided with a through hole 4 for the threaded ring 1222 to pass through, the bottom of the threaded ring 1222 is provided with an annular body 5, the bottom of the through hole 4 is provided with an expanding groove for the annular body 5 to be clamped in, the threaded ring 1222 is connected to the threaded ring 1222, the annular body 5 is driven to be compressed by the threaded connection, the threaded ring 121 is driven to move up by rotating the locking nut 1223, the annular body 5 is propped against the bracket, so that the compression of the second nail body 121 is realized, the second nail body 122 is enabled to be compressed against the bracket, the second nail body 121, the second connecting end 122 and the second connecting body 121 is enabled to be better to be in the position of the annular body 122 to rotate, and the annular body is deformed relative to the threaded ring 1222, and the threaded ring 1222 is deformed in order to rotate relative to the threaded ring 4, and the threaded ring 1222 is deformed in the two sides 4;
In order to make the annular body 5 compact the second nail 121 more stable when the lock nut 1223 is rotated, the second bone screw 12 further comprises a first compression ring 1224 and a second compression ring 1225, the first compression ring 1224 and the second compression ring 1225 are arranged between the connecting block 1221 and the lock nut 1223, the top of the connecting block 1221 is provided with first tooth parts 6 at two sides of the through hole 4, the two sides of the bottom of the second compression ring 1225 are provided with second tooth parts 7, the upper and lower sides of the first compression ring 1224 are respectively provided with tooth grooves 8 for the first tooth parts 6 and the second tooth parts 7 to be clamped in, the first tooth parts 6 and the second tooth parts 7 are arranged in an outwards convex arc shape, the tooth grooves 8 are matched with the first tooth parts 6 and the second tooth parts 7, so that the meshing area among the first tooth parts 6, the second tooth parts 7 and the tooth grooves 8 is increased, and after the annular body 121 is compacted by the rotation of the lock nut 1223;
The connecting component 2 comprises two groups of sliding parts 21 and connecting compression bars 22, the sliding parts 21 are respectively arranged on the two groups of connecting rods 13 in a sliding way, the connecting rods 13 are used for connecting the two groups of sliding parts 21, driving components used for compressing the connecting compression bars 22 and driving the sliding parts 21 to compress the connecting rods 13 are arranged on the sliding parts 21, after the connecting rods 13 are fixedly connected with the first nail body 111 and the second nail body 121 through the first connecting ends 112 and the second connecting ends 122 to form a unilateral bone screw group 1, the two groups of unilateral bone screw groups 1 are connected through the connecting component 2 to form an integral fixing support.
Referring to fig. 3 and 4, the sliding portion 21 includes a base block 211 and side pressing blocks 212 symmetrically disposed on two sides of the bottom of the base block 211, sliding holes 9 for sliding the connecting rod 13 are disposed between the two sets of side pressing blocks 212, through holes 31 for penetrating the connecting compression rod 22 are disposed between the side pressing blocks 212 and the base block 211, the driving component includes a synchronizing bolt 32 screwed on the base block 211 for compressing the connecting compression rod 22, the synchronizing bolt 32 is moved downwards by rotating the synchronizing bolt 32 to compress the connecting compression rod 22, the bottoms of the connecting compression rod 22 will press the two sets of side pressing blocks 212 downwards, the bottoms of the two sets of side pressing blocks 212 swing towards one side close to each other to compress the connecting rod 13 inserted into the through holes 31, and the connecting portion realizes the fixation of the connecting rod 13 and the connecting compression rod 22.
In order to reduce the influence of torque force generated by rotation of the synchronizing bolt 32 on the whole fixing support in the process of compressing the connecting compression rod 22 by the synchronizing bolt 32, two groups of screw holes 33 are symmetrically arranged on two sides of the top of the base block 211, the screw threads of the screw holes 33 on two sides are opposite in rotation direction, the synchronizing bolt 32 is provided with two groups of screw holes 33 which are respectively connected in the screw holes 33 on two sides, the base block 211 is provided with a communicating area at the bottom end of the screw holes 33 on two sides, the communicating area is provided with partial teeth 34 on the outer wall of the synchronizing bolt 32 at the bottom end of the synchronizing bolt 32, the partial teeth 34 of the two groups of synchronizing bolts 32 are meshed and arranged, wherein the bottom end surfaces of the two groups of synchronizing bolts 32 are positioned on the same plane, as the screw threads of the bare foot screw holes 33 are opposite in rotation direction, and the two groups of synchronizing bolts 32 are meshed and connected through the partial teeth 34, when one group of synchronizing bolts 32 are rotated downwards, the other group of synchronizing bolts 32 are driven to rotate downwards and move downwards, so that the connecting compression rod 22 is synchronously compressed: when the medical staff rotates two groups of synchronous bolts 32, two groups of synchronous bolts 32 are simultaneously rotated in opposite directions through two groups of medical wrenches, in this way, the torsion generated in the process of rotating and pressing the connecting compression rod 22 by the two groups of synchronous bolts 32 is counteracted, and the force is exerted on the connecting compression rod 22, so that the phenomenon that the connecting compression rod 22 or the connecting rod 13 is driven to rotate due to the torsion generated in the process of pressing the connecting compression rod 22 by the single group of synchronous bolts 32 is avoided, and the two groups of synchronous bolts 32 are meshed through the partial teeth 34, so that the phenomenon that the rotating speeds of the two groups of synchronous bolts 32 are different can be avoided.
In order to enable medical staff to rotate two groups of synchronous bolts 32 more conveniently by using a medical wrench, inclined planes 35 are symmetrically arranged on two sides of the top of the base block 211, screw holes 33 on two sides are respectively arranged on the inclined planes 35 on two sides, and the axial directions of the screw holes 33 are perpendicular to the inclined planes 35, so that the medical staff can have a larger operation space, one end of the synchronous bolts 32 positioned in the base block 211 is provided with a parallel surface 36, and the parallel surface 36 is arranged at an angle with the top of the synchronous bolts 32 and is parallel to the plane part of the top of the base block 211; because the partial teeth 34 interfere with each other due to the axial movement of the two sets of synchronizing bolts 32 during rotation, the tooth arrangement of the partial teeth 34 becomes gradually shorter from one side to the other side, when the two sets of synchronizing bolts 32 rotate in opposite directions, the partial teeth 34 are engaged from the longest tooth of the tooth to the shortest tooth, the bottom parallel surfaces 36 are positioned at the same horizontal position when the partial teeth 34 of the two sets of synchronizing bolts 32 are engaged, the synchronizing bolts 32 move axially once, and the engagement of the shorter sets of teeth is switched by the two sets of partial teeth 34.
Referring to fig. 1-7, the present invention provides a second embodiment:
This embodiment includes all of the first embodiment, and additionally adds the function of massaging the legs after the assembly of the fixing bracket.
Referring to fig. 5 and 6 specifically, the outer walls of the first nail 111 and the second nail 121 are respectively provided with an outer wall groove 37, the outer wall groove 37 is sleeved with a collar 38, the outer wall groove 37 is located at the upper end and the lower end of the collar 38 and is respectively sleeved with a spring 39, the circumference side of the end face of the bottom of the collar 38 is provided with a plurality of groups of massage needles 40, the collar 38 continuously shakes under the action of the springs 39 during the movement process of a fracture patient, the massage needles 40 continuously press the skin to be located at the periphery of the wound, the end parts of the massage needles 40 are spherical surfaces, and the fracture patient is more comfortable when being pressed, and the following needs to be explained: the massage needle 40 is generally used when the skin where the first nail 111 or the second nail 121 passes is healed, so that the influence of the non-healed wound on the wound healing period (the period of the fixed fracture of the fixed bracket is far longer than the wound healing period, itching and insufficient activity can be caused after the wound healing, and the continuous massage of the massage needle 40 is helpful for recovering the wound and relieving itching effect).
Because the motion range of fracture people is not big, in order to make the lantern ring 38 possess better effect of shaking from top to bottom, be equipped with multiunit first bar groove 41 along the week side on the inner wall of outer wall groove 37, be equipped with along the week side on the lantern ring 38 inner wall and rotate and be equipped with multiunit ball 42, ball 42 is located the lantern ring 38 outside and inlays and locate in first bar groove 41 and form sliding connection with first bar groove 41, be equipped with the clearance between lantern ring 38 inner peripheral wall and the outer wall groove 37 inner wall, be that lantern ring 38 only through ball 42 and outer wall groove 37 contact, wherein the ball 42 that lantern ring 38 is located everywhere first bar groove 41 is equipped with two sets, wherein first bar groove 41 inner wall is the arc and changes, can not take place to rotate when making lantern ring 38 slide, make lantern ring 38 more stable axial motion.
In order to control the compression or extension of the springs 39 to control the vibration amplitude of the collar 38 in the movement process of the fractured patient, the upper side and the lower side of the outer wall groove 37 are symmetrically provided with adjusting parts, each adjusting part comprises an annular pressing plate 43 and a sliding rod 44, the two groups of annular pressing plates 43 are sleeved on the outer wall groove 37 and are positioned on one side, far away from each other, of the two groups of springs 39, the inner walls of the upper end and the lower end of the outer wall groove 37 are respectively provided with a second strip groove 45 for sliding the sliding rod 44, the sliding rod 44 is in interference fit with the second strip grooves 45, anti-skid patterns are arranged on the outer wall of the sliding rod 44, and the sliding rod 44 can slide after force application, wherein when the massage needle 40 is not needed, the adjusting parts of the first nail body 111 or the second nail body 121 positioned on the lower part can be moved upwards for a certain distance, so that the massage needle 40 cannot contact skin when the collar 38 shakes.
Specifically, the first nail body 111 and the second nail body 121 are both provided with an outer sleeve 46 in an axial sliding manner, the bottom of the outer sleeve 46 is provided with an annular expansion plate 48, the bottom of the annular expansion plate 48 can be provided with a silica gel layer, the outer sleeve 46 is connected with a fixing bolt 47 in a threaded manner, the annular expansion plate 48 can be attached to the skin through the sliding of the outer sleeve 46, so that the wound of the skin is covered, the wound infection (the wound at the operation site is deeper and is not suitable for exposing the wound to air, the wound infection is easy to cause, and the wound is exposed outside and is easy to be air-dried, the wound healing speed is affected), the silica gel layer is more comfortable when the skin is covered by the annular expansion plate 48, wherein the outer sleeve 46 consists of a first half outer sleeve 461 and a second half outer sleeve 462, the first half jacket 461 is provided with a butt joint plate 49 at one side, the second half jacket 462 is provided with a butt joint groove 50 for inserting the butt joint plate 49, the butt joint plate 49 is in interference fit with the butt joint groove 50, the first half jacket 461 is detachably connected with the second half jacket 462 through the fit of the butt joint plate 49 and the butt joint groove 50, the annular expansion plate 48 can also be composed of a first half expansion plate 481 and a second half expansion plate 482, the first half expansion plate 481 is fixed below the first half jacket 461, the second half expansion plate 482 is fixed below the second half jacket 462, in this way, after the first nail 111 and the second nail 121 are fixed at the fracture position and the external fixing bracket is fixed, the jacket 46 and the annular expansion plate 48 are mounted on the first nail 111 and the second nail 121 in a splicing mode; in order to avoid interference with the massage needle 40 to massage the skin, gaps are formed between the inner parts of the first half jacket 461 and the second half jacket 462 and the outer wall of the first nail 111 or the second nail 121, the inner walls of the first half jacket 461 and the second half jacket 462 are respectively provided with a bump 51 which is attached to the outer wall of the first nail 111 or the second nail 121 to realize mutual positioning, and after the jacket 46 is fixed at a proper position of the first nail 111 and the second nail 121, the fixing bolt 47 can be abutted against the outer wall of the first nail 111 or the second nail 121 by rotating the fixing bolt 47 to realize relative fixation of the jacket 46 and the first nail 111 or the second nail 121.
Referring to fig. 1-6, when the device is used, a set of first nail 111 and second nail 121 are fixed on one bone of a fracture, and then the other set of first nail 111 and second nail 121 are fixed on the other bone of the fracture, and after both sets of first nail 111 and second nail 121 are fixed on the bone, the first connecting end 112 and the second connecting end 122 can be adjusted to fix the connecting rod.
When connecting the connecting rod, first pass the screw thread ring 1222 upwards out from the through-hole 4 bottom of the linking block 1221, and with first clamping ring 1224, second clamping ring 1225 and lock nut 1223 all cover to the screw thread be located the position of linking block 1221 top, then with gland nut 1123 spiro union in the screw hole of outer loop cap 1122, pass U type groove 3 with a connecting rod 13 again, slide hole 9 and the hole on linking block 1221 in the sliding part 21, can carry out preliminary fixation to the one end of connecting rod 13 through rotating gland bolt 52 earlier, make annular body 5 preliminary compress tightly second nail body 121 through rotating gland nut 1223, and then carry out preliminary fixation through rotating gland nut 1123 gland connecting rod 13 other end, thereby accomplish the preliminary installation of unilateral bone screw group 1, then need make two sets of connecting rods 13 be in parallel state when installing the other side bone screw group, then pass through the perforation 31 of two sets of sliding part 21, accomplish the preliminary installation of whole fixed bolster, then make the two sets of compression bolts 212 are pressed together to the opposite sides through continuing gland nut 1123, and lock nut 1123, make two sets of compression bolts 212 are connected to the synchronous compression bolt 32 simultaneously through rotating the two sets of compression bolt 22, thereby accomplish the final compression bolt 32 of the synchronous connection of compression bolt 32.
To avoid direct exposure of the wound to air after the wound is closed, the first half jacket 461 and the second half jacket 462 can be spliced to form the jacket 46, the bottom annular expansion plate 48 can cover the wound site by sliding the jacket 46, and the jacket 46 can be fixed in the current position by the fixing bolts 47, and the first half jacket 461 and the second half jacket 462 can be disassembled after the wound has healed to a degree suitable for contact with the outside air.
When the skin suture heals, the adjusting piece at the bottom end of the sleeve ring 38 can be slid to the bottommost end, and when the legs walk, the sleeve ring 38 can shake under the action of the upper and lower groups of springs 39, so that the massage needle 40 massages the wound and the recovery of the wound is facilitated.
In the description of the present invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (7)
1. The utility model provides a low notch external fixation balance support which characterized in that: comprises two unilateral bone screw groups (1) and a connecting component (2) connected between the two unilateral bone screw groups (1), wherein the unilateral bone screw groups (1) comprise a first bone screw (11), a second bone screw (12) and a connecting rod (13) connected between the first bone screw (11) and the second bone screw (12);
The first bone screw (11) comprises a first screw body (111) and a first connecting end (112), the first connecting end (112) comprises a sphere (1121), an outer ring cap (1122) and a compression nut (1123), the sphere (1121) is fixed at the tail end of the first screw body (111) and is provided with an inner hexagonal groove at one end far away from the first screw body (111), the top of the outer ring cap (1122) is provided with a threaded hole and a U-shaped groove (3) penetrating through the outer ring cap (1122), one end of the connecting rod (13) is clamped into the U-shaped groove (3), and the compression nut (1123) is in threaded connection with the threaded hole for compressing the connecting rod (13);
The second bone screw (12) comprises a second screw body (121) and a second connecting end (122), the second connecting end (122) comprises a connecting block (1221), a threaded ring (1222) and a locking nut (1223), the connecting block (1221) is slidably sleeved on the connecting rod (13), a compression bolt (52) for compressing the connecting rod (13) is arranged on the connecting block (1221), the connecting block (1221) and the threaded ring (1222) are sleeved on the second screw body (121), a through hole (4) for the threaded ring (1222) to penetrate is formed in the connecting block (1221), an annular body (1222) is arranged at the bottom of the threaded ring (1222), an expansion groove for the annular body (5) to be clamped in is formed in the bottom of the through hole (4), and the locking nut (1223) is connected onto the threaded ring (1222) and drives the annular body (5) to compress the second screw body (121) through threaded connection;
the connecting component (2) comprises sliding parts (21) and connecting compression bars (22), the sliding parts (21) are provided with two groups of connecting rods (13) which are respectively arranged on the two groups of connecting rods (13) in a sliding mode, the connecting rods (13) are used for connecting the two groups of sliding parts (21), and the sliding parts (21) are provided with driving components used for compressing the connecting compression bars (22) and driving the sliding parts (21) to compress the connecting rods (13);
The sliding part (21) comprises a base block (211) and side pressing blocks (212) symmetrically arranged on two sides of the bottom of the base block (211), sliding holes (9) for sliding the connecting rods (13) are formed between the two groups of side pressing blocks (212), through holes (31) for penetrating the connecting compression rods (22) are formed between the side pressing blocks (212) and the base block (211), and the driving part comprises synchronous bolts (32) which are connected onto the base block (211) in a threaded mode and are used for compressing the connecting compression rods (22);
Screw holes (33) are symmetrically formed in two sides of the top of the base block (211), threads of the screw holes (33) on two sides are opposite in rotation direction, two groups of synchronous bolts (32) are arranged and are respectively connected in the screw holes (33) on two sides in a threaded mode, a communication area is formed in the bottom end of the screw hole (33) on two sides of the base block (211), the bottom ends of the two groups of synchronous bolts (32) are located in the communication area, local teeth (34) are formed in the outer wall of the synchronous bolts (32), and the local teeth (34) of the two groups of synchronous bolts (32) are meshed;
The two sides of the top of the base block (211) are symmetrically provided with inclined planes (35), the screw holes (33) on the two sides are respectively arranged on the inclined planes (35) on the two sides, the screw holes (33) are axially perpendicular to the inclined planes (35), one end of the synchronous bolt (32) positioned inside the base block (211) is provided with a parallel surface (36), the parallel surface (36) is arranged at an angle with the top of the synchronous bolt (32) and is parallel to the plane part of the top of the base block (211), the tooth arrangement of the partial teeth (34) is gradually shortened from one side to the other side, when the two groups of synchronous teeth reversely rotate, the partial teeth (34) are gradually meshed towards the shortest position of the tooth parts by the longest meshing of the tooth parts, and the bottom parallel surfaces (36) of the two groups of synchronous bolts (32) are positioned at the same horizontal position when the partial teeth (34) of the two groups of synchronous bolts are meshed.
2. The low profile external fixation balance brace of claim 1, wherein: the utility model discloses a bone screw, including annular body (5) and second bone screw, be provided with the division groove on annular body (5), second bone screw (12) still include first clamping ring (1224) and second clamping ring (1225), the both sides that link up piece (1221) top and lie in through-hole (4) are equipped with first tooth portion (6), the both sides of second clamping ring (1225) bottom set up second tooth portion (7), the upper and lower both sides of first clamping ring (1224) are equipped with respectively and supply tooth's socket (8) that first tooth portion (6) and second tooth portion (7) card were gone into.
3. A low profile external fixation balance brace as in claim 2, wherein: the first tooth parts (6) and the second tooth parts (7) are arranged in an outward convex arc shape, and the tooth grooves (8) are matched with the first tooth parts (6) and the second tooth parts (7).
4. The low profile external fixation balance brace of claim 1, wherein: the outer wall of the first nail body (111) and the outer wall of the second nail body (121) are respectively provided with an outer wall groove (37), the outer wall grooves (37) are sleeved with a sleeve ring (38), the outer wall grooves (37) are positioned at the upper end and the lower end of the sleeve ring (38) and are respectively sleeved with a spring (39), and the periphery of the end face of the bottom of the sleeve ring (38) is provided with a plurality of groups of massage needles (40).
5. The low profile external fixation balance brace of claim 4, wherein: the inner wall of the outer wall groove (37) is provided with a plurality of groups of first strip-shaped grooves (41) along the circumferential side, the inner wall of the lantern ring (38) is provided with a plurality of groups of balls (42) along the circumferential side, the balls (42) are arranged in the first strip-shaped grooves (41) in an embedded mode outside the lantern ring (38) and form sliding connection with the first strip-shaped grooves (41), and a gap is formed between the inner circumferential wall of the lantern ring (38) and the inner wall of the outer wall groove (37).
6. The low profile external fixation balance brace of claim 5, wherein: the upper and lower bilateral symmetry of outer wall groove (37) is equipped with the regulating part, and the regulating part includes annular clamp plate (43) and slide bar (44), and outer wall groove (37) department is located to two sets of annular clamp plate (43) cover and is located one side that two sets of springs (39) kept away from each other, the upper and lower both ends inner wall of outer wall groove (37) all is equipped with and supplies slide bar (44) gliding second bar groove (45), slide bar (44) and second bar groove (45) interference fit.
7. The low profile external fixation balance brace of claim 6, wherein: the first nail body (111) and the second nail body (121) are both provided with an outer sleeve (46) in an axial sliding mode, the bottom of the outer sleeve (46) is provided with an annular expansion plate (48), and the outer sleeve (46) is connected with a fixing bolt (47) in a threaded mode.
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US10499950B2 (en) * | 2015-04-29 | 2019-12-10 | Chengji HU | Line-shaped paw-type patella external fixator |
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US4018132A (en) * | 1974-06-18 | 1977-04-19 | Tokai Cold Forming Co., Ltd. | Connecting-rod bolt |
US5102412A (en) * | 1990-06-19 | 1992-04-07 | Chaim Rogozinski | System for instrumentation of the spine in the treatment of spinal deformities |
RU2570278C1 (en) * | 2014-09-16 | 2015-12-10 | Фирюза Валяровна Гиззатуллина | Modular two-jaw orthodontic appliance for treating articular form of transversal abnormality of occlusion |
CN104224531B (en) * | 2014-09-16 | 2016-04-13 | 范嵬 | Type pin |
CN115192161A (en) * | 2022-07-27 | 2022-10-18 | 中国人民解放军总医院第四医学中心 | Reduction fixing frame for orthopedics department |
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US10499950B2 (en) * | 2015-04-29 | 2019-12-10 | Chengji HU | Line-shaped paw-type patella external fixator |
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