CN211325491U

CN211325491U - Spinal internal fixation nail rod device

Info

Publication number: CN211325491U
Application number: CN201921936051.XU
Authority: CN
Inventors: 赵全明; 董健; 胡安南
Original assignee: Nantong First Peoples Hospital
Current assignee: Nantong First Peoples Hospital
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-08-25
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a fixed nail stick device in backbone carries out the problem of fixing to the fixed stick to current nail stick device not convenient for, now proposes following scheme, and it includes a plurality of pedicle of vertebral arch screws, set up on the pedicle of vertebral arch screw and press the excellent groove, same fixed stick has been placed to a plurality of pressure excellent inslots, has seted up cortex screw thread and spongy thread on the pedicle of vertebral arch screw, and spongy thread is located the issue of cortex screw thread, has seted up a plurality of draw-in grooves on the fixed stick, has all seted up first hole on pressing the both sides inner wall in excellent groove, and fixing bolt has been placed in the first hole, and fixing bolt is last to be threaded to install the nut, and nut and pedicle of vertebral arch screw contact, the last screw hole that has seted up of fixing bolt, and adjusting bolt is installed to the screw hole internal thread, and adjusting bolt extends to fixing bolt. The utility model relates to a rationally, be convenient for fix the fixed stick to make things convenient for people's use.

Description

Spinal internal fixation nail rod device

Technical Field

The utility model relates to a nail excellent equipment technical field especially relates to a spinal internal fixation nail excellent device.

Background

At present, in clinical medicine, a spine nail rod fixing system, namely a spine internal fixation pedicle screw is adopted for resetting and fixing in orthopedic operations aiming at diseases such as spine bending, dislocation, fracture and the like. The spinal internal fixation system in the prior art comprises pedicle screws, fixing rods, connecting rods, compression screws and the like. The pressing nail closely matched with the pedicle screw has the functions of correcting and driving up and down between the pedicle screws in the spinal internal fixation system.

At present, the problem that fixing rods are not convenient to fix exists in the existing spinal internal fixation nail rod device, and therefore the spinal internal fixation nail rod device is provided for solving the problem.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a

In order to achieve the above purpose, the present invention is realized by the following technical solution:

the utility model provides a fixed nail stick device in backbone, including a plurality of pedicle of vertebral arch screws, set up on the pedicle of vertebral arch screws and press excellent groove, same fixed rod has been placed to a plurality of pressure excellent inslots, set up cortex screw thread and spongy thread on the pedicle of vertebral arch screws, and spongy thread is located the issue of cortex screw thread, a plurality of draw-in grooves have been seted up on the fixed rod, press and have all seted up first hole on the both sides inner wall in excellent groove, fixing bolt has been placed in the first hole, the last screw thread of fixing bolt installs the nut, and the nut contacts with pedicle of vertebral arch screws, the last screw hole of having seted up of fixing bolt, adjusting bolt is installed to the screw hole internal thread, adjusting bolt extends to fixing bolt.

Preferably, the sliding grooves are formed in the inner walls of the two sides of the pressing bar groove, the sliding seats are arranged in the sliding grooves in a sliding mode, one ends of the reset springs are fixedly arranged at the tops of the sliding seats, the other ends of the reset springs are fixedly arranged on the inner walls of the sliding grooves, and the sliding seats can be reset due to the fact that the reset springs are arranged.

Preferably, one side that two sliding seats are close to each other is fixed with same sliding plate, and the bottom fixed mounting of sliding plate has the cassette, and the cassette clamps mutually with the draw-in groove that corresponds, owing to be provided with cassette and draw-in groove, can fix the fixed rod.

Preferably, the locating slot has been seted up to one side of pedicle of vertebral arch screw, and fixed mounting has the locating lever on the fixing bolt, and the locating lever and the locating slot looks adaptation that corresponds owing to be provided with locating lever and locating slot, can fix a position fixing bolt.

Preferably, the balls are installed on the side, far away from each other, of each of the two sliding seats in a rolling manner, the balls are connected with the corresponding sliding grooves in a rolling manner, and the sliding seats can be stably installed in the corresponding sliding grooves in a sliding manner due to the arrangement of the balls.

In the utility model, when the fixing rod needs to be fixed, the fixing rod is firstly arranged in the rod pressing groove on the pedicle screw, then the fixing bolt penetrates through the two first holes, so that the positioning rod is clamped into the corresponding positioning groove, thereby positioning the fixing bolt, then the nut is arranged, the nut is rotated and moved, so that the nut can be in close contact with the pedicle screw, thereby fixing the fixing bolt, the rotating plate is rotated, the rotating plate drives the adjusting bolt to rotate, under the action of the threaded hole, the adjusting bolt is rotated and moved, the adjusting bolt extrudes the sliding plate, the sliding plate is moved, the sliding plate drives the sliding seat to move and compress the reset spring, the movement of the sliding plate drives the clamping seat to move, so that the clamping seat can be clamped into the corresponding clamping groove, at this time, the sliding plate presses the fixing rod, so that the fixing rod can be fixed.

The utility model relates to a rationally, simple structure, convenient operation is convenient for fix the fixed stick to make things convenient for people's use.

Drawings

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;

fig. 1 is a schematic structural view of a spinal internal fixation screw rod device provided by the present invention;

fig. 2 is a schematic structural view of a part a of a spinal internal fixation screw rod device provided by the utility model.

In the figure: 1. pedicle screws; 2. a fixing rod; 3. cortical threads; 4. cancellous threads; 5. a card slot; 6. a first hole; 7. fixing the bolt; 8. a nut; 9. a threaded hole; 10. adjusting the bolt; 11. rotating the plate; 12. a sliding groove; 13. a sliding seat; 14. a return spring; 15. a sliding plate; 16. a card holder; 17. positioning a groove; 18. positioning a rod; 19. bar pressing groove

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1-2, a fixed nail stick device in backbone, including a plurality of pedicle of vertebral arch screws 1, set up on pedicle of vertebral arch screws 1 and press excellent groove 19, same fixed rod 2 has been placed in a plurality of bar pressing grooves 19, set up cortical screw thread 3 and cancellous screw thread 4 on pedicle of vertebral arch screws 1, and cancellous screw thread 4 is located the issue of cortical screw thread 3, set up a plurality of draw-in grooves 5 on fixed rod 2, first hole 6 has all been seted up on pressing excellent groove 19's the both sides inner wall, fixing bolt 7 has been placed in first hole 6, nut 8 is installed to the last screw thread of fixing bolt 7, and nut 8 contacts with pedicle of vertebral arch screws 1, threaded hole 9 has been seted up on fixing bolt 7, adjusting bolt 10 is installed to the screw hole 9 internal thread, adjusting bolt 10 extends to fixing bolt 7's top and fixed mounting has commentaries.

The utility model discloses in, all seted up sliding tray 12 on the both sides inner wall of pressure excellent groove 19, sliding tray 12 slidable mounting has sliding seat 13, and sliding seat 13's top fixed mounting has reset spring 14's one end, and reset spring 14's other end fixed mounting is on sliding tray 12's inner wall, owing to be provided with reset spring 14, can make sliding seat 13 reset.

The utility model discloses in, one side fixed mounting that two sliding seats 13 are close to each other has same sliding plate 15, and sliding plate 15's bottom fixed mounting has cassette 16, and cassette 16 clamps mutually with the draw-in groove 5 that corresponds, owing to be provided with cassette 16 and draw-in groove 5, can fix fixed rod 2.

The utility model discloses in, constant head tank 17 has been seted up to one side of pedicle of vertebral arch screw 1, and fixed mounting has locating lever 18 on fixing bolt 7, and locating lever 18 and the constant head tank 17 looks adaptation that corresponds owing to be provided with locating lever 18 and constant head tank 17, can fix a position fixing bolt 7.

The utility model discloses in, the equal roll of one side of keeping away from each other of two sliding seat 13 installs the ball, and ball and the sliding tray 12 roll connection that corresponds, owing to be provided with the ball, can make the stable slidable mounting of sliding seat 13 in the sliding tray 12 that corresponds.

In the utility model, when the fixing rod 2 needs to be fixed, firstly, the fixing rod 2 is installed in the rod pressing groove 19 on the pedicle screw 1, then the fixing bolt 7 penetrates through the two first holes 6, so that the positioning rod 18 is clamped into the corresponding positioning groove 17, so that the fixing bolt 7 can be positioned, then the nut 8 is installed, the nut 8 is rotated and moved, so that the nut 8 can be in close contact with the pedicle screw 1, so that the fixing bolt 7 can be fixed, at the moment, the rotating plate 11 is rotated, the rotating plate 11 drives the adjusting bolt 10 to rotate, under the action of the threaded hole 9, the adjusting bolt 10 is rotated and moved, the adjusting bolt 10 extrudes the sliding plate 15, so that the sliding plate 15 moves, the sliding plate 15 drives the sliding seat 13 to move and compresses the reset spring 14, the movement of the sliding plate 15 drives the clamping seat 16 to move, make in the cassette 16 can block into corresponding draw-in groove 5, sliding plate 15 compresses tightly fixed rod 2 this moment to can fix fixed rod 2, be convenient for fix fixed rod 2, thereby make things convenient for people's use.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A device for fixing a nail rod in a vertebral column comprises a plurality of vertebral pedicle screws (1) and is characterized in that rod pressing grooves (19) are formed in the vertebral pedicle screws (1), the same fixing rod (2) is placed in the rod pressing grooves (19), cortical threads (3) and cancellous threads (4) are formed in the vertebral pedicle screws (1), the cancellous threads (4) are located under the cortical threads (3), a plurality of clamping grooves (5) are formed in the fixing rod (2), first holes (6) are formed in the inner walls of the two sides of the rod pressing grooves (19), fixing bolts (7) are placed in the first holes (6), nuts (8) are installed on the fixing bolts (7) in a threaded mode, the nuts (8) are in contact with the vertebral pedicle screws (1), threaded holes (9) are formed in the fixing bolts (7), adjusting bolts (10) are installed in the threaded holes (9), the adjusting bolt (10) extends to the upper part of the fixing bolt (7) and is fixedly provided with a rotating plate (11).

2. The device for fixing the nail rod in the spine according to claim 1, wherein sliding grooves (12) are formed in the inner walls of the two sides of the pressing rod groove (19), a sliding seat (13) is slidably installed in the sliding groove (12), one end of a return spring (14) is fixedly installed at the top of the sliding seat (13), and the other end of the return spring (14) is fixedly installed on the inner wall of the sliding groove (12).

3. The device for fixing the nail rod in the spine according to claim 2, wherein one side of the two sliding seats (13) close to each other is fixedly provided with the same sliding plate (15), the bottom of the sliding plate (15) is fixedly provided with a clamping seat (16), and the clamping seat (16) is clamped with the corresponding clamping groove (5).

4. The device for fixing the nail rod in the spine according to claim 1, wherein a positioning groove (17) is formed in one side of the pedicle screw (1), a positioning rod (18) is fixedly mounted on the fixing bolt (7), and the positioning rod (18) is matched with the corresponding positioning groove (17).

5. The spinal internal fixation spike rod device according to claim 1, wherein the two sliding seats (13) are provided with balls on the sides away from each other, and the balls are in rolling connection with the corresponding sliding grooves (12).