CN219814276U - Bone piece fixing device for comminuted fracture - Google Patents

Abstract

The utility model discloses a bone block fixing device for comminuted fracture, which comprises: the connecting pieces are N, the number of the connecting pieces is a positive integer which is not 0, the connecting pieces comprise a main body, a rotating body is arranged in a rotating cavity of the main body, a cover body is arranged at the top of the main body, and the cover body is clamped and fixed to the rotating body; the bone block binding pieces are detachably arranged at the bottom of the rotating end part of the connecting piece, and are arranged at the bottom of the rotating body, one of the bone block binding pieces is of a bone block binding structure A, and the other of the bone block binding pieces is of a bone block binding structure B. This bone piece fixing device of comminuted fracture has changed traditional adoption bone lamella and steel nail's mode and has carried out the coaptation to comminuted fracture, uses the bone piece binding member to tie up the comminuted bone piece together and fixes, need not traditional boring screw hole, more is suitable for the comparatively serious condition of crushing degree and uses, of course, also is suitable for the less serious condition of crushing degree to use.

Description

Bone piece fixing device for comminuted fracture

Technical Field

The utility model relates to the technical field of fracture, in particular to a bone block fixing device for comminuted fracture.

Background

Fractures of the humerus often occur in the humeral surgical neck, humeral shaft, upper humeral condyle, intercondylar humerus, lateral humeral condyle, and medial humeral epicondyle. Among them, the former three are more, and can occur at any age. It is mostly caused by direct violence and indirect violence, such as striking, squeezing, hitting, and striking of a heavy object, the hand or elbow lands, and violence is transmitted to various parts through the forearm or elbow.

Comminuted fracture belongs to complete fracture, and the phalangeal bone is broken into more than three pieces, also called T or Y fracture.

In the prior art, when the bone fracture is connected to the comminuted fracture, the bone plate is adopted for connection and fixation, when the bone plate is connected and fixed, the threaded hole is required to be drilled on the bone block and the bone is fixed through the steel nails, but the comminuted fracture is too serious, the bone is seriously crushed, the crushed bone blocks are small and more, at the moment, the small bone blocks are not beneficial to the drilling of the threaded hole, the installation of the bone plate is not beneficial to the promotion of the comminuted fracture operation, and therefore, the bone with serious crushing degree is not suitable for being fixed by using the bone plate.

Disclosure of Invention

The present utility model is directed to a bone block fixing device for comminuted fracture, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a bone block fixation device for comminuted fracture, comprising:

the connecting pieces are N, the number of the connecting pieces is a positive integer which is not 0, the connecting pieces comprise a main body, a rotating body is arranged in a rotating cavity of the main body, a cover body is arranged at the top of the main body, and the cover body is clamped and fixed to the rotating body;

the bottom of the rotating end part of the connecting piece is detachably provided with a bone block binding piece, the bone block binding piece is detachably arranged at the bottom of the rotating body, and the two bone block binding pieces are respectively provided with a bone block binding structure A and a bone block binding structure B;

two adjacent connecting pieces are connected through two locking pieces, and meanwhile, the connecting angle between the two adjacent connecting pieces is adjustable.

As a further scheme of the utility model: the connecting piece comprises a static circular block, an inner hole is formed in the center of the static circular block in a penetrating mode, and a bearing is arranged in the inner hole.

As still further aspects of the utility model: the rotator comprises a rotary round block, and the rotary round block is connected in an inner ring of the bearing in an interference mode.

As still further aspects of the utility model: the outer edge of static circle piece top has seted up the annular groove, the spacing diaphragm is all installed through the bolt to the both sides at rotatory circle piece top, the outer edge integrated into one piece of leaning on of spacing diaphragm bottom is connected with spacing lug, simultaneously, the inside slip of spacing lug at the annular groove.

As still further aspects of the utility model: the cover body comprises an end cover, the end cover is in interference fit with the inside of the annular groove, and clamping grooves which are clamped with the limiting transverse plates are formed in two sides of the top of the end cover.

As still further aspects of the utility model: the middle part welding of static circle piece outer wall surface left side has rotatory piece, the welding of the position department of leaning on static circle piece outer wall surface right side has last stopper, and the welding of the position department of leaning on static circle piece outer wall surface right side has lower stopper, simultaneously, is formed with the rotatory chamber that supplies rotatory piece between last stopper and the lower stopper.

As still further aspects of the utility model: the top of going up the stopper and the bottom of lower stopper have all been seted up arc wall A, the arc wall B that is linked together with arc wall A has all been seted up to the bottom of going up the stopper and the top of lower stopper, and arc wall B's width is less than arc wall A's width, arc passageway has been seted up in the top penetration of rotatory piece.

As still further aspects of the utility model: the locking piece comprises a stop block, a connecting column is welded at the bottom of the stop block and at the center of the circle, an expansion thread cavity is formed at the center of the bottom of the connecting column, and an expansion bolt is arranged in the expansion thread cavity.

As still further aspects of the utility model: the bone block binding structure B comprises a binding ring, the bone block binding structure A comprises a binding rectangular bar, vertical blocks are uniformly formed at two ends of the binding ring and the binding rectangular bar, and one side of each vertical block is provided with a connecting threaded hole in a penetrating mode.

As still further aspects of the utility model: the top of rotatory circle piece runs through and has offered two connecting slots that supply to erect the piece and pass, the screw hole that is linked together with connecting slot has all been seted up to the both sides of rotatory circle piece arcwall face, fixing bolt is installed to the internal screw thread of screw hole, and fixing bolt passes the inside of connecting the screw hole and with connect threaded connection between the screw hole.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model changes the traditional mode of adopting the bone plate and the steel nails to carry out bone fracture on the crushed fracture, uses the bone block binding piece to bind the crushed bone blocks together for fixation, does not need to drill the threaded holes traditionally, is more suitable for the situation that the crushing degree is serious, and is also suitable for the situation that the crushing degree is not serious.

2. According to the utility model, in the using process, the corresponding number of connecting pieces and bone block binding pieces can be selected for connection and use according to actual crushing conditions, so that the bone block binding pieces are more flexible and practical, meanwhile, the bone block binding pieces are integrally formed by the connecting pieces, the connecting pieces are formed by the main body, the rotating body and the cover body, the device is designed and manufactured by adopting a modularized design concept, and the bone block binding pieces are arranged in a modularized way and are assembled and disassembled in the using process, so that the bone block binding pieces are more beneficial to customized service of patients, the structure is more attached to the bone form of the patients, and later recovery is facilitated.

3. According to the utility model, when the rotary round block is arranged in the bearing, the rotary round block drives the bone block binding piece to rotate through the bearing, and the position angle of the bone block binding piece can be finely adjusted, so that the device is more attached to the bone form, and meanwhile, when the rotary round block rotates, the limiting convex block slides in the annular groove to play a limiting role, so that the stability of the rotary round block during rotation is ensured.

4. According to the utility model, after the position angle adjustment of the bone block binding piece is completed, the end cover is installed in the static round block in an interference manner, and the limiting transverse plate is clamped in the clamping groove, so that the end cover plays a role in fixing the rotary round block, the subsequent rotation of the rotary round block under force is avoided, and meanwhile, the end cover plays a role in sealing, thereby being beneficial to preventing blood from being immersed into the structure.

5. According to the utility model, before the two adjacent static round blocks are fixed through the locking piece, the rotating block can rotate in the rotating cavity, so that the angle between the two adjacent static round blocks is adjusted, and the installation position of the device is further adjusted, so that the device is more attached to the bone shape of a patient, the degree of wedging is high, and the recovery of a subsequent patient is facilitated.

6. According to the utility model, the bone block binding piece and the rotating body are connected and fixed through the threaded connection of the fixing bolt and the connecting threaded hole, so that the bone block binding piece and the rotating body are convenient to connect and detach.

7. According to the utility model, two adjacent static round blocks are connected together through the principle of the expansion bolts, and are fixed through the principle of the expansion bolts, so that the structure is simple and stable, welding is not needed, and secondary damage to a patient caused by welding heat is avoided.

Drawings

FIG. 1 is a schematic view of a bone block fixation device for comminuted fracture;

FIG. 2 is a schematic view showing the separation of the connecting member and the bone fragment binding in a bone fragment fixation device for comminuted fracture;

FIG. 3 is an exploded view of a connector of a bone block fixation device for comminuted fracture;

FIG. 4 is a top view of a static button in a bone block fixation device for comminuted fracture;

FIG. 5 is a top view of a rotating knob in a bone fixation device for comminuted fracture;

FIG. 6 is a top view of an end cap of a bone block fixation device for comminuted fracture;

FIG. 7 is an exploded view of a retaining member of a bone fragment fixation device for comminuted fracture;

fig. 8 is a schematic view of the structure of a bone fragment binding in a bone fragment fixation device for comminuted fracture.

In the figure: the bone block binding device comprises a connecting piece 1, a bone block binding piece 2, a locking piece 3, a main body 4, a rotating body 5, a cover body 6, a static round block 7, an annular groove 8, an arc groove B9, an inner hole 10, a bearing 11, an upper limiting block 12, an arc groove A13, a rotating cavity 14, a rotating block 15, an arc channel 16, a rotating round block 17, a connecting slot 18, a limiting transverse plate 19, a limiting lug 20, a fixing bolt 21, a threaded hole 22, an end cover 23, a clamping groove 24, a stop 25, a connecting column 26, an expansion threaded cavity 27, an expansion bolt 28, a bone block binding structure A29, a binding circular ring 30, a vertical block 31, a connecting threaded hole 32, a binding rectangular bar 33, a lower limiting block 34 and a bone block binding structure B35.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 8, the present utility model proposes a bone block fixing device for comminuted fracture, comprising:

the plurality of connecting pieces 1, the number of the connecting pieces 1 is N, N is a positive integer which is not 0, in the using process, the corresponding number of the connecting pieces 1 and the bone block binding pieces 2 can be selected for connection and use according to actual crushing conditions, the connecting pieces 1 are more flexible and practical, the connecting pieces 1 comprise a main body 4, a rotating body 5 is arranged in a rotating cavity of the main body 4, a cover body 6 is arranged at the top of the main body 4, and the cover body 6 is clamped and fixed with the rotating body 5;

the bone block binding member 2 is detachably arranged at the bottom of the rotating end part of the connecting member 1, the bone block binding member 2 is detachably arranged at the bottom of the rotating body 5, the bone block binding member 2 is supported in a customizing mode, bone data of a patient are subjected to customizing through three-dimensional scanning, two bone block binding members 2 are arranged, one bone block binding member is a bone block binding structure A29, the other bone block binding member is a bone block binding structure B35, the traditional bone fracture setting mode of adopting a bone plate and steel nails is changed, the bone block binding member 2 is used for binding the crushed bone blocks together for fixing, a traditional drilling threaded hole is not needed, and the bone block binding member is more suitable for being used under the condition of serious crushing degree, and is also suitable for being used under the condition of not serious crushing degree;

the two adjacent connecting pieces 1 are connected through the two locking pieces 3, meanwhile, the connecting angle between the two adjacent connecting pieces 1 is adjustable, before the two adjacent static round blocks 7 are fixed through the locking pieces 3, the rotating block 15 can rotate in the rotating cavity 14, the angle between the two adjacent static round blocks 7 is adjusted, the installation position of the device is further adjusted, the device is enabled to be more attached to the bone shape of a patient, the wedging degree is high, and the recovery of a subsequent patient is facilitated.

The connecting piece 1 comprises a static circular block 7, an inner hole 10 is formed in the center of the static circular block 7 in a penetrating mode, and a bearing 11 is arranged in the inner hole 10.

The rotator 5 includes rotatory circle piece 17, and rotatory circle piece 17 interference connection is in the inner circle of bearing 11, and rotatory circle piece 17 is when installing in the inside of bearing 11, and rotatory circle piece 17 drives bone piece binding 2 through bearing 11 and rotates, can finely tune the position angle of bone piece binding 2 for the form of device laminating bone more.

The annular groove 8 is formed in the outer edge of the top of the static circular block 7, the limiting transverse plates 19 are mounted on the two sides of the top of the rotating circular block 17 through bolts, the limiting protruding blocks 20 are integrally formed on the outer edges of the bottoms of the limiting transverse plates 19, meanwhile, the limiting protruding blocks 20 slide in the annular groove 8, when the rotating circular block 17 rotates, the limiting protruding blocks 20 slide in the annular groove 8, the limiting effect is achieved, and the stability of the rotating circular block 17 during rotation is guaranteed.

The cover body 6 comprises an end cover 23, the end cover 23 is in interference fit with the inside of the annular groove 8, clamping grooves 24 which are clamped with the limiting transverse plates 19 are formed in two sides of the top of the end cover 23, the end cover 23 plays a role in fixing the rotating round block 17, the subsequent stressed rotation of the rotating round block 17 is avoided, and meanwhile, the end cover 23 plays a role in sealing, so that blood is prevented from being immersed into the structure.

The middle part welding of static round block 7 outer wall surface left side has rotatory piece 15, and the welding of the position department of leaning on static round block 7 outer wall surface right side has last stopper 12, and the welding of the position department of leaning on static round block 7 outer wall surface right side has lower stopper 34, simultaneously, is formed with the rotatory chamber 14 that supplies rotatory piece 15 between last stopper 12 and the lower stopper 34, and one side that upper stopper 12 and lower stopper 34 kept away from static round block 7 is provided with the arc recess.

Arc-shaped grooves A13 are formed in the top of the upper limiting block 12 and the bottom of the lower limiting block 34, arc-shaped grooves B9 communicated with the arc-shaped grooves A13 are formed in the bottom of the upper limiting block 12 and the top of the lower limiting block 34, the width of each arc-shaped groove B9 is smaller than that of each arc-shaped groove A13, and an arc-shaped channel 16 is formed in the top of the rotating block 15 in a penetrating mode.

The retaining member 3 includes dog 25, and the welding of the centre of a circle department of dog 25 bottom has spliced pole 26, and spliced pole 26 passes the inside of arc wall A13 and arc wall B9, and expansion thread cavity 27 has been seted up to the centre of a circle department of spliced pole 26 bottom, and expansion thread cavity 27's internally mounted has expansion bolts 28, links together two adjacent static circle pieces 7 through expansion bolts's principle, fixes through expansion bolts's principle, and simple structure just is stable, need not the welding, avoids welded heat to cause the secondary injury to the patient.

The bone block binding structure B35 comprises a binding circular ring 30, the bone block binding structure A29 comprises a binding rectangular bar 33, vertical blocks 31 are formed at two ends of the binding circular ring 30 and the binding rectangular bar 33 in a uniform and integrated mode, and connecting threaded holes 32 are formed in one side of the vertical blocks 31 in a penetrating mode.

The top of rotatory circle piece 17 runs through and has offered two connecting slots 18 that supply perpendicular piece 31 passed, and screw hole 22 that is linked together with connecting slot 18 has all been seted up to the both sides of rotatory circle piece 17 arcwall face, and fixing bolt 21 is installed to the internal screw thread of screw hole 22, and fixing bolt 21 pass the inside of connecting screw hole 32 and with connect between the screw hole 32 threaded connection, connect fixedly between bone piece binding 2 and rotator 5 through the threaded connection of fixing bolt 21 and connecting screw hole 32, make things convenient for the connection and the dismantlement between bone piece binding 2 and the rotator 5.

The whole comprises connecting piece 1 and bone piece binding 2, and connecting piece 1 comprises main part 4, rotator 5, lid 6, and the design of device adopts the modularized design theory to design the preparation, and the modularization sets up, places and installs and removes the connection in the in-process of using, more does benefit to patient's customization service for the structure is laminated patient's bone form more, does benefit to the recovery in later stage.

The working principle of the utility model is as follows:

when in use, a corresponding number of connecting pieces 1 are selected for use according to the actual fracture condition, three-dimensional scanning is firstly carried out on the uncrushed humerus of a patient, and the matched bone piece binding pieces 2 are customized according to the shape and the size of the bone at the scanning position for use;

if the two humerus bones are crushed, selecting a standard bone block binding piece 2 for use, and firstly trapping the crushed bone blocks together through the bone block binding piece 2 for fixation;

then, the bone piece bundle 2 is mounted on the bottom of the rotator 5;

the procedure for installing the bone fragment bundle 2 at the bottom of the rotator 5 is as follows:

inserting the vertical block 31 into the connecting slot 18, screwing the fixing bolt 21 into the threaded hole 22, and allowing the fixing bolt 21 to pass through the connecting threaded hole 32 on the vertical block 31, so as to connect and fix the bone block binding member 2 and the rotating body 5 through the threaded connection of the fixing bolt 21 and the connecting threaded hole 32;

after the fixation is completed, the rotary round block 17 is plugged into the inner hole 10, and the rotary round block 17 and the inner hole 10 are in interference connection and fixed together;

similarly, another bone piece bundle 2 and rotator 5 may be installed;

when two adjacent static round blocks 7 are fixed, the rotary block 15 on one side enters the rotary cavity 14 on the other side, the connecting column 26 passes through the arc-shaped groove A13 and the arc-shaped groove B9 on the upper limiting block 12, and the expansion bolt 28 passes through the arc-shaped groove A13 and the arc-shaped groove B9 on the lower limiting block 34 and then enters the expansion thread cavity 27 for connection and fixation;

when the rotary round block 17 is arranged in the bearing 11, the rotary round block 17 drives the bone block binding member 2 to rotate through the bearing 11, so that the position angle of the bone block binding member 2 can be finely adjusted;

after the position angle adjustment of the bone block binding piece 2 is completed, the end cover 23 is installed in the static round block 7 in an interference manner, the limiting transverse plate 19 is clamped in the clamping groove 24, and then the end cover 23 plays a role in fixing the rotary round block 17, so that the rotary round block 17 is prevented from being stressed to rotate subsequently;

before two adjacent static round blocks 7 are fixed through the locking piece 3, the rotating block 15 can rotate in the rotating cavity 14, so that the angle between the two adjacent static round blocks 7 is adjusted, the device is more attached to the bone shape of a patient, the wedging degree is high, and the recovery of the subsequent patient is facilitated.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (10)

1. A bone piece fixation device for comminuted fracture, characterized in that: comprising the following steps:

the connecting pieces (1), the number of the connecting pieces (1) is N, N is a positive integer other than 0, the connecting pieces (1) comprise a main body (4), a rotating body (5) is arranged in a rotating cavity of the main body (4), a cover body (6) is arranged at the top of the main body (4), and the cover body (6) is clamped and fixed with the rotating body (5);

the bottom of the rotating end part of the connecting piece (1) is detachably provided with a bone block binding piece (2), the bone block binding piece (2) is detachably arranged at the bottom of the rotating body (5), two types of bone block binding pieces (2) are arranged, one type of bone block binding structure A (29) and the other type of bone block binding structure B (35);

two adjacent connecting pieces (1) are connected through two locking pieces (3), and meanwhile, the connecting angle between the two adjacent connecting pieces (1) is adjustable.

2. A bone block fixation device for comminuted fracture according to claim 1, wherein: the connecting piece (1) comprises a static circular block (7), an inner hole (10) is formed in the center of the static circular block (7) in a penetrating mode, and a bearing (11) is mounted in the inner hole (10).

3. A bone block fixation device for comminuted fracture according to claim 2, wherein: the rotary body (5) comprises a rotary round block (17), and the rotary round block (17) is connected in an inner ring of the bearing (11) in an interference mode.

4. A bone block fixation device for comminuted fracture according to claim 3, wherein: annular grooves (8) are formed in the outer edges of the tops of the static round blocks (7), limiting transverse plates (19) are mounted on two sides of the tops of the rotary round blocks (17) through bolts, limiting protruding blocks (20) are integrally formed on the outer edges of the bottoms of the limiting transverse plates (19), and meanwhile the limiting protruding blocks (20) slide in the annular grooves (8).

5. A bone block fixation device for comminuted fracture according to claim 4, wherein: the cover body (6) comprises an end cover (23), the end cover (23) is in interference fit with the inside of the annular groove (8), and clamping grooves (24) which are clamped with the limiting transverse plates (19) are formed in two sides of the top of the end cover (23).

6. A bone block fixation device for comminuted fracture according to claim 2, wherein: the middle part welding of static circle piece (7) outer wall surface left side has rotatory piece (15), the department of putting more than on static circle piece (7) outer wall surface right side has welded stopper (12), and the department of putting more than on static circle piece (7) outer wall surface right side has welded stopper (34) down, simultaneously, is formed with between stopper (12) and stopper (34) down and supplies rotatory chamber (14) of rotatory piece (15).

7. A bone block fixation device for comminuted fracture according to claim 6, wherein: the top of going up stopper (12) and the bottom of lower stopper (34) have all been seted up arc wall A (13), arc wall B (9) that are linked together with arc wall A (13) have all been seted up to the bottom of going up stopper (12) and the top of lower stopper (34), and the width of arc wall B (9) is less than the width of arc wall A (13), arc passageway (16) have been run through at the top of rotatory piece (15).

8. A bone block fixation device for comminuted fracture according to claim 1, wherein: the locking piece (3) comprises a stop block (25), a connecting column (26) is welded at the bottom of the stop block (25) and the circle center, an expansion thread cavity (27) is formed at the circle center of the bottom of the connecting column (26), and an expansion bolt (28) is installed in the expansion thread cavity (27).

9. A bone block fixation device for comminuted fracture according to claim 3, wherein: the bone block binding structure B (35) comprises a binding circular ring (30), the bone block binding structure A (29) comprises a binding rectangular bar (33), vertical blocks (31) are integrally formed at two ends of the binding circular ring (30) and the binding rectangular bar (33), and connecting threaded holes (32) are formed in one side of each vertical block (31) in a penetrating mode.

10. A bone block fixation device for comminuted fracture according to claim 9, wherein: two connecting slots (18) for the vertical blocks (31) to pass through are formed in the top of the rotary round block (17) in a penetrating mode, threaded holes (22) communicated with the connecting slots (18) are formed in two sides of the arc-shaped surface of the rotary round block (17), fixing bolts (21) are installed in internal threads of the threaded holes (22), and the fixing bolts (21) penetrate through the connecting threaded holes (32) and are in threaded connection with the connecting threaded holes (32).