CN210019583U - Annular fixer for orthopedics department - Google Patents

Abstract

The utility model relates to an orthopedics annular fixer, at least including the area body, the both ends of the area body be provided with the opening respectively and with the block section of opening block, wherein, the block section is according to passing but open-ended mode block ground supports and leans on in the opening, make the area body is in the block section with form confined girdle during the opening block, wherein the opening with be provided with the protrusion between the block section at least one convex part on area body surface under the circumstances of fixed broken bone of girdle winding, the convex part is according to can restricting the girdle is followed the mode that the axial direction of broken bone removed with the surface of broken bone supports each other and leans on. The utility model discloses a set up the anti vertical displacement ability that the convex part structure realized annular fixer in the annular belt body, prevent that annular fixer from sliding along the long-tube bone.

Description

Annular fixer for orthopedics department

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an orthopedics annular fixer.

Background

Tubular bone fractures are common in clinic, the unstable fractures in the tubular bone fractures have treatment difficulty, long-tube bone fractures are internally fixed by interlocking intramedullary nails or steel plate screws, and the transverse bones are better fixed by operation. However, for those unstable fractures with oblique, spiral or comminuted shapes, it is difficult to perform surgical fixation, often needs to be ligated and internally fixed by an additional circular steel wire, and has great operation difficulty, mainly because the bone blocks are not stably restored and fixed, which causes reaming or is easy to loosen when drilling with a bone drill, and maintains the bone length inaccurate. When the oblique and spiral fractures of the femoral shaft are fixed in the interlocking intramedullary nail, the fracture is usually fixed by bone clamps and then the marrow is expanded, sometimes two bone clamps are used for fixing, but the operation of the operation is influenced by using the bone clamps for temporary fixation of the fracture. The fixation of comminuted fracture with bone clamps is unreliable. Jiemei (Zimmer) encircling wire cable fixation systems and jiemei cable.ready cable tie systems (femoral applications) are reported in orthopedics council. When the system is fixedly taken out in a row due to the larger volume, a cut is additionally made for taking out the cable binding system; the cables of the fixing system and the cable binding system are circular, and the narrow contact surface with the bone is not favorable for resetting and fixing the bone fragments; the structure is complicated and the cost is high.

Chinese patent (publication No. CN108030546U) discloses an orthopedic annular fixator which is integrally formed by metal materials and comprises a belt head, an occlusion section and a belt body, wherein the belt buckle head is of a hollow structure, the belt body and the occlusion section are respectively provided with a corresponding buckle tooth structure, and the fracture section is annularly fixed by adopting a method similar to a buckle belt, so that the fracture section can be gradually tightened according to the situation, and the reduction of the fracture end is particularly facilitated; if the reset is not ideal, the loosening can be carried out; the greatest benefit is that the interference on the periosteal blood supply can be minimized: the invention has the advantages that most of blood vessels of the periosteum run longitudinally, and the longitudinal line segments are contacted, so that most of blood supply of the periosteum cannot be interfered, and the influence on fracture healing can be minimized. However, the contact surface between the inner side of the orthopedic annular fixator and periosteum provided by the patent is a longitudinal line segment, which cannot prevent the fixator from longitudinally displacing along a long tubular bone, thereby causing the orthopedic annular fixator to slide away from a fracture. Moreover, the long oblique fracture can only fix the middle section part, and the provided fixing force is weak, so that the fracture ends at two ends of the oblique fracture cannot be prevented from twisting.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model provides an orthopedics annular fixer, at least including the area body. The both ends of the belt body are respectively provided with an opening and a clamping section clamped with the opening. The clamping section can be clamped and abutted against the opening in a mode of penetrating through the opening, so that the belt body forms a closed annular belt when the clamping section is clamped with the opening. At least one convex part protruding out of the surface of the belt body is arranged between the opening and the clamping section. In a case where the annular band surrounds a fixed fractured bone, the convex portion abuts against a surface of the fractured bone in such a manner that the movement of the annular band in the axial direction of the fractured bone can be restricted.

According to a preferred embodiment, the belt body is further provided with at least one slider sliding along the belt body. The convex portion is provided on a side wall surface of the slider. The slider slides along the band body in a manner of being embedded in the band body. The convex part is a convex element on the side wall of the slide block close to one side of the surface of the fractured bone. Under the condition that the clamping section penetrates through the opening and is clamped with the opening to form a closed annular belt, the convex part is wedged into the surface of the fractured bone in a mode of being capable of adjusting the fixed position along the annular belt body in a sliding mode.

According to a preferred embodiment, the belt body is provided with a sliding groove extending in a length direction of the belt body between the opening and the engaging section. The both sides of slider be provided with the spout leans on the recess each other. The strip-shaped sliding groove is a slender strip-shaped hollow opening. The two ends of the strip-shaped sliding groove respectively extend to the two end parts of the belt body. The sliding block slides along the sliding groove through the groove in a mode of being embedded into the sliding groove.

According to a preferred embodiment, the projection extends through the slider and to the outside of the slider. The slider is provided with an opening which is tightly attached to the convex part. The projection is screwed with the opening so as to be slidable in the axial direction of the opening.

According to a preferred embodiment, the male part comprises at least a screw and a nut. The screw is provided with at least partial threads. The screw cap is arranged at the end part of the screw rod extending to the outer side of the sliding block along the opening hole. And under the condition that the screw rod moves along the opening, the screw cap is abutted against the side wall of the sliding block in a mode of limiting the screw rod to move along the axial direction of the opening.

According to a preferred embodiment, the tip of the convex portion is provided with a tapered edge. Wherein, under the condition that the convex part and the side wall of the broken bone are abutted against each other, the tapered cutting edge is wedged into the surface of the broken bone in a manner of limiting the movement of the band body along the axial direction of the broken bone.

According to a preferred embodiment, a fixing means is provided between the opening and the end. Under the condition that the clamping section penetrates through the opening and is clamped with the opening to form a closed annular belt, the clamping section penetrates through the opening to extend to the outer side of the annular belt and is abutted against the annular belt through the fixing device.

According to a preferred embodiment, the fastening device comprises at least a worm that is adapted to the engagement section and a fastening frame. The clamping section is abutted against the worm in a mode of sequentially penetrating through the opening and the fixing frame.

According to a preferred embodiment, the fixing frame is provided with a through hole for accommodating the worm and a port which is communicated with the through hole and has a hollow structure. Under the condition that the clamping section passes through the fixing frame through the port, the worm is abutted against the clamping section in a mode of being matched with the clamping section to lock the annular belt.

According to a preferred embodiment, said orthopaedic ring fixator is further provided with a connector for connecting two of said orthopaedic ring fixators. The connecting piece is at least provided with a screw hole matched with the convex part, and the convex part is connected with the connecting piece in a mode of sequentially penetrating through the screw hole and the opening.

The utility model has the advantages that:

1. the utility model provides a pair of orthopedics annular fixer prevents that annular fixer from sliding along the long bone of pipe through set up the anti vertical displacement ability that the annular fixer was realized to the convex part structure in the annular area body, and does not need the external fixation, is favorable to the healing of fracture.

2. The utility model provides a pair of orthopedics annular fixer passes through the connecting piece and couples two annular fixers, provides bending resistance and antitorque function, can prevent that the fracture broken ends of oblique fracture both ends department from twisting.

Drawings

Fig. 1 is a schematic view of a preferred structure of the present invention;

FIG. 2 is a schematic view of a preferred belt body of the present invention;

FIG. 3 is a schematic structural view of a preferred protrusion of the present invention; and

fig. 4 is a schematic diagram of a preferred embodiment of the present invention.

List of reference numerals

1: the belt body 2: opening 3: clamping section

4: convex part 5: a slide block 6: sliding chute

7: groove 8: end portion 9: opening holes

10: screw rod 11: the nut 12: fracture line

13: tapered edge 14: the fixing device 15: fixing frame

16: through hole 17: port 18: connecting piece

19: screw hole

Detailed Description

In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are used in the orientation or positional relationship indicated on the basis of the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, it should also be understood that unless otherwise explicitly specified or limited, "over" or "under" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following detailed description is made with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the orthopedic ring fixator of the present invention at least includes a belt body 1. The two ends of the belt body 1 are respectively provided with an opening 2 and a clamping section 3 clamped with the opening 2. The engaging section 3 can be engaged with the opening 2 in such a way that it passes through the opening 2, so that the belt body 1 forms a closed loop when the engaging section 3 engages with the opening 2. At least one protrusion 4 protruding out of the surface of the belt body 1 is provided between the opening 2 and the engagement section 3. In the case where the annular band is fixed around the fractured bone, the convex portion 4 abuts against the surface of the fractured bone in such a manner that the movement of the annular band in the axial direction of the fractured bone can be restricted. Preferably, the surface of the band body 1 is designed to have low incisura, so as to avoid the stimulation of soft tissues, and the material of the band body 1 can be a medical metal material with a smooth surface, which can be bent and is not easy to deform, such as stainless steel, titanium alloy, titanium and the like. Preferably, the band body 1 can be bent into a ring shape, the opening 2 and the clamping section 3 are clamped to form a ring-shaped band, and the radius of the ring-shaped band can be adjusted by moving the clamping section 3, so that the ring-shaped band is tightly attached to the fractured bone part. Preferably, the engagement of the engaging section 3 with the opening 2 prevents the engaging section 3 from moving, locking the endless belt against lateral displacement. Preferably, the engaging section 3 can be a rack or a clamp or other structures capable of clamping the opening 2, the engaging section 3 can only move in the direction passing through the opening 2, and when the engaging section 3 is withdrawn from the opening 2, the rack or the clamp structure on the engaging end 3 can abut against the opening 2 to prevent the engaging section 3 from being withdrawn from the opening 2. Preferably, the projection 4 is arranged on the inner side of the annular band, the projection 4 and the surface of the side wall of the fractured bone abutting against each other to prevent the annular fixator from being longitudinally displaced.

According to a preferred embodiment, the belt body 1 is also provided with at least one slider 5 sliding along the belt body 1. The convex portion 4 is provided on the side wall surface of the slider 5. The slider 5 slides along the tape body 1 in such a manner as to be embedded in the tape body 1. The convex part 4 is a convex element on the side wall of the slide block 5 close to the surface side of the fractured bone. In the case where the engaging segments 3 pass through the openings 2 and engage with the openings 2 to form a closed endless belt, the projections 4 are wedged into the surface of the fractured bone in such a manner that the fixing position can be slidably adjusted along the endless belt body.

According to a preferred embodiment, the belt body 1 is provided with a runner 6 extending in the length direction of the belt body 1 between the opening 2 and the engaging segment 3. The two sides of the sliding block 5 are provided with grooves 7 which are mutually abutted with the sliding grooves 6. The chute 6 is an elongated strip-shaped hollow opening. The two ends of the sliding groove 6 extend to the two ends 8 of the belt body 1 respectively. The slider 5 slides along the slide groove 6 by being inserted into the slide groove 6 through the groove 7. The unfolded configuration of the belt body 1 is shown in fig. 2. Preferably, the sliding block 5 can also slide along the sliding groove 6 through the convex part 4 with a limit structure, and the convex part 4 passes through the sliding groove 6 and is abutted against the sliding groove 6 through the limit structure arranged on the convex part 4, so that the sliding block 5 can slide along the sliding groove 6 without departing from the sliding groove 6. Preferably, the stop structure of the projection 4 is a projection extending in the radial direction of the projection 4, which projection can abut against the runner 6.

According to a preferred embodiment, the projection 4 extends through the slider 5 and to the outside of the slider 5. The slider 5 is provided with an opening 9 which is in close contact with the projection 4. The projection 4 is screwed into the opening 9 so as to be slidable in the axial direction of the opening 9.

According to a preferred embodiment, the male part 4 comprises at least a screw 10 and a nut 11. The screw 10 is provided with at least partial threads. A nut 11 is provided at the end of the screw 10 extending along the opening 9 to the outside of the slider 5. In the case where the screw 10 moves along the opening 9, the nut 11 abuts against the side wall of the slider 5 in such a manner that the movement of the screw 10 in the axial direction of the opening 9 can be restricted.

According to a preferred embodiment, the tip of the convex portion 4 is provided with a tapered edge 13. Wherein, in the case where the convex portion 4 abuts against the side wall of the fractured bone, the tapered cutting edge 13 is wedged into the surface of the fractured bone in such a manner that the movement of the band body 1 in the axial direction of the fractured bone can be restricted.

Preferably, as shown in fig. 3, the convex part 4 is arranged on the sliding block 5, the position of the convex part 4 can be adjusted, the convex part 4 can be prevented from contacting with the fracture line 12, the tapered cutting edge 13 of the convex part 4 can pierce into the cortical bone layer, and the annular belt can be better fixed. Preferably, for various types of comminuted fractures of long tubular bones, a plurality of sliders 5 may be provided, and the comminuted bones may be gathered by the sliders 5 and the protrusions 4 by a method of gathering the main bones with bone pieces.

According to a preferred embodiment, a fixing device 14 is provided between the opening 2 and the end 8. In the case that the engaging segment 3 passes through the opening 2 and engages with the opening 2 to form a closed endless belt, the engaging segment 3 extends through the opening 2 to the outside of the endless belt and abuts against the endless belt by the fixing device 14.

According to a preferred embodiment, the fixing means 14 comprise at least a worm matching the snap-in section 3 and a fixing frame 15. The clamping section 3 is abutted against the worm in a mode of sequentially penetrating through the opening 2 and the fixing frame 15.

According to a preferred embodiment, the fixing frame 15 is provided with a through hole 16 housing the worm and a port 17 communicating with the through hole 16 and having a hollow structure. In the case of the engagement section 3 passing through the holder 15 via the port 17, the worm abuts against the engagement section 3 in such a way that it can cooperate with the engagement section 3 to lock the endless belt. The snap segments 3 can be tightened by turning the worm, thereby locking the endless belt.

According to a preferred embodiment, the orthopaedic ring fixator is further provided with a connector 18 for connecting two orthopaedic ring fixators. The connecting piece 18 is provided with at least a screw hole 19 matching with the convex part 4, and the convex part 4 is connected with the connecting piece 18 in a way of sequentially passing through the screw hole 19 and the opening 9. As shown in FIG. 4, coupling two annular fixators by a connector 18 can be used to fix oblique fractures. Preferably, two ring-shaped retainers are secured to both ends of the oblique fracture line to provide longitudinal support force through the connector 18 to secure the oblique fracture fragment. Preferably, the connecting element 18 is also provided with elastic means, such as a spring, able to provide the connecting element 18 with an adjustable compression force, so as to avoid stress shielding of the fractured bone.

For easy understanding, the usage of the orthopedic annular fixator of the present invention will be discussed.

The clamping section 3 of the annular fixer is sleeved into the fracture end by using instruments such as a tissue clamp and the like, the clamping section 3 is clamped into the opening 2 by surrounding the fracture end, and the belt body 1 forms an annular belt after the clamping section 3 is clamped with the opening 2. Secondly, the bone block to be reset is reset, the position of the annular fixer is adjusted, and then the radius of the annular belt is adjusted by moving the clamping section 3, so that the annular belt is tightly attached to the fracture end. In order to avoid the longitudinal displacement of the annular belt along the axial direction of the fractured bone, the belt body 1 is provided with a convex part 4, and the convex part 4 can abut against the side wall of the fractured bone to prevent the annular belt from moving along the longitudinal direction of the fractured bone. In order to avoid the position of the fracture line of the oblique fracture or the spiral fracture, the convex part 4 is arranged on the slide block 5, the slide block 5 can slide along the slide groove 6 on the belt body 1 and avoid the fracture line 12, the convex part 4 is penetrated into the cortex of the fractured bone, and the annular belt can be better fixed. The clamping section 3 penetrates through the port 17, the annular belt is locked in a mode that the worm is rotated to abut against the clamping section 3 to fix the fracture, and finally, the part of the clamping section 3, which penetrates through the port 17, of the clamping section 3 is cut off. For various comminuted fractures of a long tubular bone, a plurality of sliders 5 are provided by a method of closing the main bone with the bone pieces, and the convex portions 4 of the bone pieces 5 are fixed internally so as to penetrate into the marrow of the bone pieces, and the main bone is closed by the sliders 5 sliding in the slide grooves 6. For oblique and spiral fractures of long bones, retrograde marrow expansion is performed at the fracture proximal end in advance, a bougie is reserved after the marrow cavity required by the operation is expanded to perform fracture reduction, and two orthopedic annular fixtures are fixed at the fracture distal end after reduction, or the orthopedic annular fixtures are adjusted according to the length of an actual fracture line. Then, two orthopedic annular fixators are connected in a way that the connecting piece 18 is fixed on the sliding block 5, so that the displacement caused by the instability of oblique fracture or spiral fracture is avoided. After the fracture line is healed, the orthopedic annular fixator is taken out through a secondary operation.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. An orthopedic annular fixator at least comprises a belt body (1), and is characterized in that two ends of the belt body (1) are respectively provided with an opening (2) and a clamping section (3) clamped with the opening (2), wherein,

the clamping section (3) can be clamped and abutted in the opening (2) in a mode of penetrating through the opening (2), so that the belt body (1) forms a closed annular belt when the clamping section (3) is clamped with the opening (2), wherein,

at least one convex part (4) protruding out of the surface of the belt body (1) is arranged between the opening (2) and the clamping section (3), and under the condition that the annular belt surrounds and fixes the fractured bone, the convex part (4) is abutted against the surface of the fractured bone in a mode of limiting the movement of the annular belt along the axial direction of the fractured bone.

2. The orthopaedic ring fixator according to claim 1, wherein said strap (1) is further provided with at least one slider (5) sliding along said strap (1), said protrusions (4) being provided on the lateral wall surface of said slider (5), wherein,

the slide block (5) slides along the band body (1) in a manner of being embedded into the band body (1), the convex part (4) is a convex element on the side wall of the slide block (5) close to one side of the surface of the fractured bone,

under the condition that the clamping section (3) passes through the opening (2) and is clamped with the opening (2) to form a closed annular belt, the convex part (4) is wedged into the surface of the fractured bone in a mode of being capable of sliding along the annular belt body to adjust the fixed position.

3. The orthopaedic ring fixator according to claim 2, wherein the band (1) is provided with a sliding groove (6) extending in the length direction of the band (1) between the opening (2) and the clamping section (3), and both sides of the slider (5) are provided with grooves (7) abutting against the sliding groove (6), wherein,

the sliding groove (6) is a long and thin strip-shaped hollow opening, two ends of the sliding groove (6) respectively extend to two end parts (8) of the belt body (1), and the sliding block (5) slides along the sliding groove (6) through the groove (7) in a manner of being embedded into the sliding groove (6).

4. Orthopaedic ring fixator according to claim 2, wherein the protrusion (4) extends through the slider (5) and to the outside of the slider (5), the slider (5) being provided with an opening (9) that fits tightly with the protrusion (4), wherein,

the projection (4) is screwed into the opening (9) so as to be slidable in the axial direction of the opening (9).

5. Orthopaedic ring fixator according to claim 4, wherein said male portion (4) comprises at least a screw (10) and a nut (11), wherein,

the screw rod (10) is at least provided with partial threads, the screw cap (11) is arranged at the end part of the screw rod (10) extending to the outer side of the sliding block (5) along the opening hole (9),

the nut (11) abuts against the side wall of the slider (5) in such a manner that the movement of the screw (10) in the axial direction of the opening (9) can be restricted, in the case where the screw (10) moves along the opening (9).

6. Orthopaedic ring fixator according to claim 1, wherein the tip of the convex portion (4) is provided with a tapered cutting edge (13), wherein,

under the condition that the convex part (4) and the side wall of the fractured bone abut against each other, the tapered cutting edge (13) is wedged into the surface of the fractured bone in a mode of limiting the movement of the band body (1) along the axial direction of the fractured bone.

7. Orthopaedic ring fixator according to claim 3, wherein fixing means (14) are provided between said opening (2) and said end (8), wherein,

under the condition that the clamping section (3) penetrates through the opening (2) and is clamped with the opening (2) to form a closed annular belt, the clamping section (3) penetrates through the opening (2) to extend to the outer side of the annular belt and is abutted against the annular belt through the fixing device (14).

8. Orthopaedic ring fixator according to claim 7, wherein said fixing means (14) comprise at least a worm matching said snap-in section (3) and a fixing frame (15), wherein,

the clamping section (3) is abutted against the worm in a mode of sequentially penetrating through the opening (2) and the fixing frame (15).

9. Orthopaedic ring fixator according to claim 8, wherein said fixing frame (15) is provided with a through hole (16) housing said worm screw and a port (17) communicating with said through hole (16) and having a hollow structure, wherein,

the worm is mutually abutted with the clamping section (3) in a manner that the worm can be matched with the clamping section (3) to lock the annular belt under the condition that the clamping section (3) penetrates through the fixed frame (15) through the port (17).

10. Orthopaedic ring fixator according to claim 4, further provided with a connection (18) for connecting two of said orthopaedic ring fixators, wherein,

the connecting piece (18) is at least provided with a screw hole (19) matched with the convex part (4), and the convex part (4) is connected with the connecting piece (18) in a mode of sequentially penetrating through the screw hole (19) and the opening (9).

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