CN210330710U

CN210330710U - Universal locking bone plate structure for spinal articular process

Info

Publication number: CN210330710U
Application number: CN201920355947.2U
Authority: CN
Inventors: 缪伟; 王志荣; 施建东; 鱼竞成; 肖龙
Original assignee: Zhangjiagang Hospital of Traditional Chinese Medicine
Current assignee: Zhangjiagang Hospital of Traditional Chinese Medicine
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2020-04-17
Anticipated expiration: 2029-03-20

Abstract

The utility model discloses a universal locking coaptation plate structure of spinal articular process, include: the L-shaped bone fracture plate and the two locking screws are formed by integrally molding a first wing plate and a second wing plate, a first universal locking threaded through hole matched with the locking screw is formed in the first wing plate, and a second universal locking threaded through hole matched with the locking screw is formed in the second wing plate; the two ends of the inner side of the joint of the first wing plate and the second wing plate are respectively and fixedly provided with a fixing plate, the inner side surfaces of the two fixing plates are arc surfaces which are concave inwards, the upper end edges of the inner side surfaces of the two fixing plates are in smooth transition connection with the inner side surface of the first wing plate, and the lower end edges of the inner side surfaces of the two fixing plates are in smooth transition connection with the inner side surface of the second wing plate. The universal locking bone fracture plate for the spinal articular process is suitable for routine orthopedic operations, has a simple structure, is convenient for medical staff to observe and adjust, is safe and reliable, and is very convenient to operate.

Description

Universal locking bone plate structure for spinal articular process

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a universal locking coaptation plate structure of spinal articular process.

Background

Currently, in the surgical procedure for treating various unstable fracture dislocation of thoracolumbar vertebrae, degeneration of intervertebral discs, spondylolisthesis and kyphosis, one or more upper and lower vertebral bodies of an affected part need to be fixed. The vertebra from top to bottom is fixed to present general pedicle of vertebral arch screw and connective bar matched with mode, promptly: firstly, respectively nailing a pedicle screw into the pedicles at two sides of a vertebral body of an affected part, treating the other vertebral body in the same way, then respectively connecting and fixing the two pedicle screws at the same side of the two vertebral bodies by using a connecting rod, and treating a plurality of vertebral bodies in the same way; the vertebral pedicle screw fixing mode has the following defects: because the nerve roots are distributed outside the vertebral pedicle, peripheral nerves are easily injured in the process of driving the vertebral pedicle screw, the use safety is low, the operation is inconvenient, the fixation of the vertebral column centrum can be completed in a long time, and the operation efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve is: provides a universal locking bone plate structure for spinal articular process, which is convenient to operate, safe and reliable and can be used for driving screws in multiple directions in the conventional orthopedic surgery.

In order to solve the above problem, the utility model adopts the following technical scheme: the universal locking bone plate structure of backbone articular process, include: the L-shaped bone fracture plate and the two locking screws are formed by integrally molding a first wing plate and a second wing plate, a first universal locking threaded through hole matched with the locking screw is formed in the first wing plate, and a second universal locking threaded through hole matched with the locking screw is formed in the second wing plate; the two ends of the inner side of the joint of the first wing plate and the second wing plate are respectively and fixedly provided with a fixing plate, the inner side surfaces of the two fixing plates are arc surfaces which are concave inwards, the upper end edges of the inner side surfaces of the two fixing plates are in smooth transition connection with the inner side surface of the first wing plate, and the lower end edges of the inner side surfaces of the two fixing plates are in smooth transition connection with the inner side surface of the second wing plate.

Further, the aforementioned spinal zygapophysis universal locking bone plate structure, wherein the included angle α between the first wing plate and the second wing plate is 80-120 °.

Further, the aforementioned spinal zygapophysis universal locking bone plate structure, wherein the included angle α between the first wing plate and the second wing plate is 90-110 °.

Further, the foregoing spinal zygapophysis universal locking bone plate structure, wherein the length H of the first wing plate is shorter than the length L of the second wing plate.

Further, the aforementioned spinal articular process universal locking bone plate structure, wherein the length ratio of the length H of the first wing plate to the length L of the second wing plate is 4: 7-5.9: 6.

further, the aforementioned spinal articular process universal locking bone plate structure, wherein the length ratio of the length H of the first wing plate to the length L of the second wing plate is 5: 6.

further, according to the structure of the spine zygopophysis universal locking bone plate, the end face of the top end of the first wing plate is an outwardly convex arc surface, and the arc surface of the top end of the first wing plate is in smooth transition connection with the side faces of the two sides of the first wing plate; the end face of the top end of the second wing plate is an arc surface protruding outwards, and the arc surface of the top end of the second wing plate is in smooth transition connection with the side faces of two sides of the second wing plate.

Further, in the above-mentioned universal locking bone plate structure for spinal articular process, the inside connection part and the outside connection part of the first wing plate and the second wing plate are both in smooth transition connection.

The utility model has the advantages that: the universal locking bone fracture plate structure for the spinal articular process is suitable for conventional orthopedic operations, simple in structure, convenient for medical staff to observe and adjust the angle of a driving locking screw by the aid of the design of the first universal locking threaded through hole and the second universal locking threaded through hole, safe, reliable and very convenient to operate, and the joint process is more effectively fixed.

Drawings

Fig. 1 is a schematic structural view of the universal locking bone plate structure for the spinal articular process of the present invention.

Fig. 2 is a schematic diagram of the left-side view of fig. 1.

Fig. 3 is a schematic view of the structure in the top view of fig. 1.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1, fig. 2 and fig. 3, the spinal articular process universal locking bone plate structure of the present embodiment comprises: constitute L shape coaptation board and two locking screw 8 by first pterygoid lamina 1 and second pterygoid lamina 2 integrated into one piece, set up the first universal locking screw through-hole 5 that matches with locking screw 8 on first pterygoid lamina 1, the screw thread in the first universal locking screw through-hole 5 be universal screw thread, set up the universal locking screw through-hole 4 of second that matches with locking screw 8 on second pterygoid lamina 2, the screw thread in the universal locking screw through-hole 4 of second be universal screw thread. Fixed plate 3 that is provided with respectively at the inboard both ends of the junction of first pterygoid lamina 1 and second pterygoid lamina 2, the medial surface 31 of two fixed plates 3 is the arc surface of inside concave yield, and medial surface 31 upper end edge of two fixed plates 3 all with the smooth transitional coupling of medial surface 11 of first pterygoid lamina 1, the medial surface 31 lower extreme edge of two fixed plates 3 all with the smooth transitional coupling of medial surface 21 of second pterygoid lamina 2. The setting of two fixed plates 3 is fixed with the position and the open angle between first pterygoid lamina 1 and the second pterygoid lamina 2, prevents that L shape coaptation board from producing the deformation because of long-term use, or receive factors such as exogenic action, and the deformation has: the first wing plate 1 and the second wing plate 2 are twisted with each other, and the opening angle between the first wing plate 1 and the second wing plate 2 becomes smaller or larger.

As shown in fig. 1, the included angle α between the first wing plate 1 and the second wing plate 2 in the embodiment is 80-120 °, and the best solution of the included angle α between the first wing plate 1 and the second wing plate 2 is that the included angle α between the first wing plate 1 and the second wing plate 2 is 90-110 °.

As shown in fig. 2 and fig. 3, in the present embodiment, the length H of the first wing plate 1 is shorter than the length L of the second wing plate 2, and the specific length ratio is: the length ratio of the length H of the first wing 1 to the length L of the second wing 2 is 4: 7-5.9: 6. the optimal solution for the length ratio between the first wing 1 and the second wing 2 is preferably: the length ratio of the length H of the first wing 1 to the length L of the second wing 2 is 5: 6.

when in use, the inner side surface 11 of the first wing plate 1 and the inner side surface 21 of the second wing plate 2 of the spinal articular process universal locking bone plate structure are attached to two sides of the articular process to be fixed, wherein the part close to the spinous process is the first wing plate 1, and the part close to the transverse process is the second wing plate 2. Then, two locking screws are screwed into the first universal locking thread through hole 5 and the second universal locking thread through hole 4 respectively until the first wing plate 1 and the second wing plate 2 are fixed on two sides of the articular process to be fixed.

As shown in fig. 2 and fig. 3, in this embodiment, the end surface 7 at the top end of the first wing plate 1 is an outwardly convex arc surface, and the arc surface at the top end of the first wing plate 1 is in smooth transition connection with the side surfaces at two sides of the first wing plate 1, so that the first wing plate 1 is in a semicircular key shape. 2 top end face 6 of second pterygoid lamina is outside convex arc surface, and 2 top arc surfaces of second pterygoid lamina and the smooth transitional coupling in 2 both sides of second pterygoid lamina make second pterygoid lamina 2 be the semicircle key shape. The inner side joint and the outer side joint of the first wing plate 1 and the second wing plate 2 are both in smooth transition connection. The safety protection effect is played in the above setting, prevents that medical staff or patient from being by sharp closed angle fish tail.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications or equivalent changes made in accordance with the technical spirit of the present invention are also within the scope of the present invention.

The utility model has the advantages that: the universal locking bone fracture plate structure for the spinal articular process is suitable for conventional orthopedic operations, simple in structure, convenient for medical staff to observe and adjust the angle of a driving locking screw by the aid of the design of the first universal locking threaded through hole 5 and the second universal locking threaded through hole 4, safe, reliable and very convenient to operate, and the joint process is more effectively fixed.

Claims

1. Universal locking bone plate structure of backbone articular process, its characterized in that: the method comprises the following steps: the L-shaped bone fracture plate and the two locking screws are formed by integrally molding a first wing plate and a second wing plate, a first universal locking threaded through hole matched with the locking screw is formed in the first wing plate, and a second universal locking threaded through hole matched with the locking screw is formed in the second wing plate; the two ends of the inner side of the joint of the first wing plate and the second wing plate are respectively and fixedly provided with a fixing plate, the inner side surfaces of the two fixing plates are arc surfaces which are concave inwards, the upper end edges of the inner side surfaces of the two fixing plates are in smooth transition connection with the inner side surface of the first wing plate, and the lower end edges of the inner side surfaces of the two fixing plates are in smooth transition connection with the inner side surface of the second wing plate.

2. The structure of a spinal apophyseal universal locking bone plate according to claim 1, wherein the angle α between the first wing plate and the second wing plate is 80-120 °.

3. The structure of a spinal apophyseal universal locking bone plate according to claim 2, wherein the angle α between the first wing plate and the second wing plate is 90-110 °.

4. The spinal zygapophysis universal locking bone plate structure of claim 1, wherein: the length H of the first wing is shorter than the length L of the second wing.

5. The spinal zygapophysis universal locking bone plate structure of claim 4, wherein: the length ratio of the length H of the first wing to the length L of the second wing is 4: 7-5.9: 6.

6. the spinal zygapophysis universal locking bone plate structure of claim 5, wherein: the length ratio of the length H of the first wing plate to the length L of the second wing plate is 5: 6.

7. the spinal articular process universal locking bone plate structure according to claim 1, 2 or 4, characterized in that: the end surface of the top end of the first wing plate is an outwardly convex arc surface, and the arc surface of the top end of the first wing plate is in smooth transition connection with the side surfaces of the two sides of the first wing plate; the end face of the top end of the second wing plate is an arc surface protruding outwards, and the arc surface of the top end of the second wing plate is in smooth transition connection with the side faces of two sides of the second wing plate.

8. The spinal zygapophysis universal locking bone plate structure of claim 1, wherein: the inner side joint and the outer side joint of the first wing plate and the second wing plate are in smooth transition connection.