CN211325484U

CN211325484U - Bone moving device

Info

Publication number: CN211325484U
Application number: CN201921772685.6U
Authority: CN
Inventors: 曹阳; 毕云龙; 赵国军
Original assignee: Tianjin Walkman Biomaterial Co ltd
Current assignee: Tianjin Walkman Biomaterial Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-08-25
Anticipated expiration: 2029-10-21

Abstract

The utility model discloses a bone moving device, which comprises two parallel connecting rods, at least two connecting blocks which are sleeved on the two connecting rods in a matching way through two parallel round holes and are used for being fixed at the near end and the far end of a bone, a sliding connecting block which is used for driving a bone moving section between the near end and the far end of the bone to move, and a moving connecting block which drives the sliding connecting block to move along the connecting rods; the front end of a pushing rod fixed on the sliding connecting block extends into a pushing rod hole in the moving connecting block and is meshed with a propeller which is arranged on the moving connecting block and driven to rotate through a side tooth part. The utility model discloses reduce the infection risk among the treatment process, avoided the needle track to cut the soft tissue and moved the resistance that causes to the bone, reduced the patient and moved the in-process misery at the bone, avoided moving in-process skew power line and leaded to the operation failure consequence, convenient nursing, and do not influence the clothing, the limbs of being convenient for are cold-proof.

Description

Bone moving device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a bone removes device.

Background

Bone migration technology is the first choice of treatment for large bone defects at present, namely, the bone migration section arranged between the proximal end and the distal end of the bone is moved correspondingly to promote the growth of the bone, so as to form a whole. At present, the bone moving technology is mainly realized by an external fixing frame, which comprises an annular external fixing frame and a unilateral external fixing frame, and the ilizarov annular external fixing support is mainly used in clinical application. When the bone moving support main body is positioned outside the body, the bone needle penetrates through soft tissues to be connected with the bone, and the aim of moving the bone is indirectly realized by adjusting an in-vitro device. The following disadvantages exist: 1. the spicules cut soft tissue during mobilization, causing persistent pain. 2. Serious complications such as osteomyelitis can be caused in severe cases of needle tract infection. 3. In the moving process, the moving bone segments deviate from the axis of the bone to cause deformed healing, or the broken ends are contacted too little to cause insufficient healing strength and can not bear load. 4. The external fixing frame has large volume, and the patient can not wear clothes in the treatment process, so the life is inconvenient, and the physical and mental burden is large. 5. If the soft tissue resistance is large in the moving process, the spicules are bent and broken, and the moving effect is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bone moving device for treating large bone defects, aiming at the technical defects in the prior art.

For realizing the utility model discloses a technical scheme that the purpose adopted is:

a bone moving device comprises two parallel connecting rods, at least two connecting blocks which are sleeved on the two connecting rods in a matching way through two parallel round holes and are used for being fixed at the near end and the far end of a bone, a sliding connecting block used for driving a bone moving section between the near end and the far end of the bone to move, and a moving connecting block driving the sliding connecting block to move along the connecting rods; the front end of a pushing rod fixed on the sliding connecting block extends into a pushing rod hole in the moving connecting block and is meshed with a propeller which is arranged on the moving connecting block and driven to rotate through a side tooth part.

Preferably, the connecting block and the moving connecting block are respectively provided with a threaded hole for allowing a locking screw to penetrate through an implanted bone so as to fix the connecting block and the moving connecting block on the bone.

Preferably, the upper surface of the sliding connection block is provided with a connection groove adapted to the shape of the fixing portion of the pushing rod, a threaded hole for a locking screw to pass through the implanted bone-moving section to fix the sliding connection block and the bone-moving section is formed in the connection groove, and the fixing portion of the pushing rod is fixed to the sliding connection block and the bone-moving section by the locking screw matched with the threaded hole after being embedded in the connection groove.

Preferably, a propeller mounting groove is formed on the upper surface of the moving connecting block, and the side wall of the propeller mounting groove is communicated with the propeller rod hole so as to realize the meshing of the propeller rod and the propeller.

Preferably, one side of the propeller is connected with a rotary operating rod.

Preferably, the rotating operation rod comprises a cylindrical part and a prism part connected with the cylindrical part, the cylindrical part is positioned in soft tissue, and the prism part is positioned outside the body.

Furthermore, the bone moving device further comprises an external operating rod, wherein the external operating rod comprises a handheld part and a rod body part, the handheld part is connected with the rod body part in a T-shaped structure, and the rod body part is provided with an inserting inner hole matched with the prism part in an inserting mode.

The utility model can realize that only one needle channel is needed to be communicated with the outside of the body, thereby greatly reducing the infection risk in the treatment process. Completely avoids the resistance of the needle channel to the bone moving caused by cutting soft tissue, and greatly reduces the pain of the patient in the bone moving process. The bone moving section runs along the inner fixing rod, so that the consequence of operation failure caused by the deviation of a force line in the moving process is avoided. The device is mainly arranged in the body, is convenient to care, does not affect clothes, and is convenient for keeping the limbs warm.

Drawings

Fig. 1 is a schematic view of the bone transfer device according to the present invention.

Fig. 2-4 are schematic views of a connection block, a moving connection block, and a sliding connection block, respectively, in a bone mover.

Fig. 5-7 are schematic cross-sectional views taken along lines a-A, B-B, C-C of fig. 2-4, respectively.

Fig. 8-9 are front and left side views, respectively, of a locking screw in a bone displacement device.

FIG. 10 is a schematic view of a connecting rod in the bone mobilization device.

Fig. 11 is a schematic view of a push rod in the bone mover.

Fig. 12-13 are schematic right and front views, respectively, of a pusher in a bone mover.

FIGS. 14-15 are schematic illustrations of the internal bore of the external operating rod of the bone mover and a front view.

FIG. 16 is a skeletal illustration of a bone segment being moved by a belt applied to a bone mover.

Fig. 17 is a schematic view of the bone mover mounted to a bone.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-17, the bone moving device of the present invention comprises two parallel connecting rods 5, a connecting block 1, a moving connecting block 2, a sliding connecting block 3, a pushing rod connecting the moving connecting block and the sliding connecting block, which are respectively sleeved on the two connecting rods through two parallel smooth circular holes in a matching manner, wherein one end of the pushing rod is fixed with the upper surface of the sliding connecting block, and the other end of the pushing rod extends into a pushing rod hole 2-3 in the moving connecting block 2, and is engaged with a propeller 7 installed on the moving connecting block through a side tooth part; the connecting block and the moving connecting block are respectively provided with a threaded hole for allowing a locking screw 4 to penetrate through an implanted bone so as to fix the connecting block 1 and the moving connecting block 2 on the bone.

Wherein, the connecting block 1 is provided with a smooth round hole 1-1 matched with the cylindrical connecting rod and a threaded hole 1-2 matched with the locking screw 4; the moving connecting block 2 is provided with a smooth round hole 2-1 matched with the cylindrical connecting rod, a threaded hole 2-2 matched with the locking screw, a square pushing rod hole 2-3 matched with the pushing rod and a pushing groove 2-4 used for installing a propeller 7; the sliding connecting block 3 is provided with a smooth round hole 3-1 matched with the cylindrical connecting rod, a threaded hole 3-2 used for fixing one end of the push rod and the sliding connecting block by using a screw and a connecting groove 3-3 matched with one end of the push rod.

The locking screw 4 is divided into a screw rod 4-2 implanted into a bone, a threaded screw cap part 4-1 matched with a threaded hole 1-2 on the connecting block 1, a threaded hole 2-2 on the moving connecting block 2 and a threaded hole 3-2 on the sliding connecting block 3; the outer diameter of the connecting rod 5 is matched with the smooth round hole 1-1 on the connecting block 1, the smooth round hole 2-1 on the moving connecting block 2 and the smooth round hole 3-1 on the sliding connecting block 3.

Wherein, a fixed part of the pushing rod 6 and the sliding connecting block 3 is provided with a threaded hole 6-1 matched with a threaded screw cap part on the locking screw 4 and a main body 6-2 matched with the pushing rod hole 2-2 on the moving connecting block 2, and one side of the main body 6-2 is provided with a saw-toothed structure 6-3.

The propeller 7 comprises a gear shaft part 7-1 matched with the propelling groove 2-4 on the moving connecting block 2, a cylindrical extension rod 7-2 and a triangular extension rod 7-3, the cylindrical extension rod 7-2 and the triangular extension rod 7-3 form a rotating operating rod, and the triangular extension rod 7-3 can be replaced by other regular prism structures, and the structure is not limited in particular.

Furthermore, the bone-moving device also comprises an external operating rod 8 with a T-shaped structure, the external operating rod 8 comprises a handle 8-2 and an operating rod part, the operating part is provided with a triangular inner hole 8-1 matched with the triangular extension rod 7-3 of the propeller 7, and the propeller 7 is rotated through the handle 8-2 of the external operating rod 8 of the rotator, so that the purpose of moving the bone-moving section is achieved.

When the bone fracture fixing device is used, the connecting blocks, the moving connecting blocks and the sliding connecting blocks penetrate through the two connecting rods, the two connecting blocks are fixed at the proximal end 9-1 and the distal end 9-3 of a bone respectively through locking screws, and then the moving connecting blocks are fixed at the tail end of the proximal end 9-1 of a fracture through the locking screws. And adjusting the position of the pushing rod to ensure that the main body of the pushing rod passes through the pushing rod hole of the moving connecting block, inserting the tail part of the pushing rod into the connecting groove on the sliding connecting block, and connecting the threaded hole on the pushing rod with the threaded hole on the sliding connecting block by using a locking screw to ensure that the pushing rod, the sliding connecting block and the moving bone section 9-3 are fixed into a whole. Then, a scalpel is used for inserting the jack at the position, corresponding to the skin, of the moving connecting block, the propeller is inserted out through the incision, the tooth shaft part of the propeller is inserted into the propelling groove in the moving connecting block and meshed with the teeth of the propelling rod, the cylindrical part of the extending rod of the propeller is positioned in soft tissues, and the triangular part is positioned outside the body. Then, the external operating rod is nested in the extension rod triangular part, the operating rod is rotated, whether the device runs smoothly and is pushed well is checked, the bone moving section is pulled back to the original position, the surgical area is washed, and then the external operating rod is rotated by a specific angle on time every day according to the instruction of an operating doctor, so that the external bone moving can be realized.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A bone moving device is characterized by comprising two parallel connecting rods, at least two connecting blocks which are sleeved on the two connecting rods in a matching way through two parallel round holes and are used for being fixed at the near end and the far end of a bone, a sliding connecting block used for driving a bone moving section between the near end and the far end of the bone to move, and a moving connecting block driving the sliding connecting block to move along the connecting rods; the front end of a pushing rod fixed on the sliding connecting block extends into a pushing rod hole in the moving connecting block and is meshed with a propeller which is arranged on the moving connecting block and driven to rotate through a side tooth part.

2. The bone mover of claim 1, wherein the connector block and the mover connector block each have threaded holes for receiving locking screws through the bone to secure the connector block and the mover connector block to the bone.

3. The bone mover of claim 1, wherein the sliding coupling block has a coupling groove formed on an upper surface thereof to correspond to a shape of the fixing portion of the pushing rod, the coupling groove having a screw hole formed therein for a locking screw to pass through the bone-moving implant section to fix the sliding coupling block and the bone-moving implant section, the fixing portion of the pushing rod being fixed to the sliding coupling block and the bone-moving implant section by the locking screw fitted to the screw hole after being inserted into the coupling groove.

4. The bone mover of claim 1, wherein the mover attachment block has a pusher mounting groove formed on an upper surface thereof, and a sidewall of the pusher mounting groove communicates with the pusher hole to effect engagement of the pusher with the pusher.

5. The bone mover of claim 1, wherein a side of the pusher is coupled to a rotating lever.

6. The bone mover of claim 5, wherein the rotating lever includes a cylindrical portion and a prismatic portion connected to the cylindrical portion, the cylindrical portion being located within the soft tissue and the prismatic portion being located outside the body.

7. The bone mover of claim 6, further comprising an external operating lever comprising a handle portion and a lever portion, wherein the handle portion is connected to the lever portion in a T-shaped configuration, and the lever portion has an insertion hole for insertion fit with the prism portion.