CN215688355U

CN215688355U - Acetabulum posterior column screw positioning device

Info

Publication number: CN215688355U
Application number: CN202122120391.9U
Authority: CN
Inventors: 吴贵勇; 齐玉疆; 余立钦; 刘孒程; 余祥卫
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-02-01
Anticipated expiration: 2031-09-03

Abstract

The utility model discloses an acetabulum posterior column screw positioning device, which comprises a bottom plate and a hollow plate, wherein the bottom plate is hollow, two ends of the top of the bottom plate are fixedly connected with fixed plates, a same cross rod is fixedly connected between the two fixed plates and horizontally arranged, the surface of the cross rod is sleeved with a sliding sleeve and slides on the surface of the cross rod, the hollow plate is fixedly connected to the center of the top of the sliding sleeve and vertically arranged, two ends of the bottom plate are respectively provided with a supporting leg in a sliding manner, a synchronous moving mechanism for synchronously moving the two supporting legs is arranged in the bottom plate, one side of the sliding sleeve is connected with a bolt through threads, the top end of the bolt penetrates through one side of the sliding sleeve and is abutted against one side of the cross rod, one side of the hollow plate is provided with a sleeve in a sliding manner and horizontally arranged, and an up-down moving mechanism for moving the sleeve up and down is arranged in the hollow plate. The utility model avoids the situation of shaking in use, thereby improving the use effect of the device.

Description

Acetabulum posterior column screw positioning device

Technical Field

The utility model relates to the technical field of acetabulum, in particular to an acetabulum posterior column screw positioning device.

Background

The hip joint is one of the largest and most stable joints of the human body, and is a typical ball and socket joint. The hip joint has good internal stability and flexible mobility, the acetabulum is positioned in the center of the outer side surface of the hip bone and is hemispherical and deep concave, the diameter of the acetabulum is about 30-50 mm, and the surface of the acetabulum is covered with transparent articular cartilage with the thickness of about 2mm and is distributed in a half moon shape.

Although the acetabular posterior column retrograde percutaneous lag screw guiding device disclosed in the publication No. CN203328794U can guide screws, it is troublesome to operate and has poor fixing effect, and the using effect is reduced, so it is highly desirable to design an acetabular posterior column screw positioning device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a screw positioning device for a posterior acetabular column.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an acetabulum posterior column screw positioning device comprises a bottom plate and a hollow plate, wherein the bottom plate is hollow, two ends of the top of the bottom plate are fixedly connected with fixing plates, a same transverse rod is fixedly connected between the two fixing plates and horizontally arranged, the surface of the transverse rod is sleeved with a sliding sleeve and slides on the surface of the transverse rod, the hollow plate is fixedly connected with the center of the top of the sliding sleeve and vertically arranged, two ends of the bottom plate are respectively provided with a supporting leg in a sliding way, a synchronous moving mechanism for synchronously moving the two supporting legs is arranged in the bottom plate, one side of the sliding sleeve is connected with a bolt through threads, the top end of the bolt penetrates through one side of the sliding sleeve and is abutted against one side of the transverse rod, one side of the hollow plate is provided with a sleeve in a sliding way and horizontally arranged, an up-down moving mechanism for up-down moving the sleeve is arranged in the hollow plate, one end of the sleeve is provided with an L-shaped rod, and the top end of the transverse edge of the L-shaped rod slides in the sleeve, a first moving mechanism used for moving the L-shaped rod is arranged in the sleeve, and a cylinder is installed at the bottom of a vertical edge of the L-shaped rod and is horizontally arranged.

Preferably, the synchronous moving mechanism comprises a screw rod, sliding plates are arranged at two ends of the inner portion of the bottom plate in a sliding mode, the screw rod is arranged inside the bottom plate in a rotating mode and horizontally arranged, the screw rod penetrates through the two sliding plates and is connected to the inner portions of the two sliding plates through threads, and the screw rod is connected with the two sliding plates in an opposite threaded direction.

Furthermore, a first notch is formed in the bottom of the bottom plate, the bottom of each sliding plate is fixedly connected with a first convex column, the bottom of each sliding plate penetrates through the first notch and is fixedly connected to the center of the top of each supporting leg, a first knob is rotated on one side of the bottom plate, and the top end of the screw rod penetrates through the bottom plate and is installed at the center of one side of the first knob.

Preferably, reciprocating mechanism includes the lead screw, and the lead screw rotates in the inside and vertical setting of hollow slab, the inside slider that slides of hollow slab, and the lead screw passes through threaded connection inside the slider, the second notch has been seted up to hollow slab one side, and slider one side installs the second projection and passes second notch and sleeve one end and connect, hollow slab top rotates has the second knob, and the lead screw top passes hollow slab top and installs in second knob one side center department.

Furthermore, the first moving mechanism comprises an electric telescopic rod, the electric telescopic rod is horizontally arranged at one end inside the sleeve, and an output shaft of the electric telescopic rod is arranged at the top end of the transverse edge of the L-shaped rod.

The utility model has the beneficial effects that:

1. according to the positioning device, when the screw needs to be positioned, the screw is firstly placed in the cylinder, the screw rod is driven to rotate through the first knob, the two sliding plates can be driven to synchronously move by the rotation of the screw rod, the two sliding plates can drive the two first convex columns to move by the synchronous movement of the two sliding plates, and the two supporting legs can be driven to synchronously move by the movement of the two convex columns, so that the positioning device can be fixed, the situation of shaking in use is avoided, and the using effect of the positioning device is improved.

2. According to the utility model, after the device is fixed, the left and right positions of the cylinder can be adjusted by moving the sliding sleeve, after the left and right adjustment is completed, the sliding sleeve is fixed by the bolt, the screw rod is driven by the second knob to rotate, the slider is driven by the screw rod to move, the sleeve is driven by the slider to move, the L-shaped rod is driven by the sleeve to move, the cylinder is driven by the L-shaped rod to move up and down, finally the L-shaped rod is driven by the electric telescopic rod to move, the cylinder is driven by the L-shaped rod to move back and forth, the screw can be further adjusted in all directions, so that the positioning is accurate, different acetabular posterior columns can be positioned, and further the practicability of the device is improved.

Drawings

FIG. 1 is a schematic structural view of an acetabular posterior column screw positioning device according to the utility model;

figure 2 is a cross-sectional view of a base plate and a hollow plate of an acetabular posterior column screw positioning device according to the utility model.

In the figure: 1. a base plate; 2. a cross bar; 3. a sliding sleeve; 4. a bolt; 5. a hollow slab; 6. a sleeve; 7. an L-shaped rod; 8. a cylinder; 9. a support leg; 10. a screw rod; 11. a slide plate; 12. a lead screw; 13. a slider; 14. an electric telescopic rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, an acetabular posterior column screw positioning device comprises a bottom plate 1 and a hollow plate 5, wherein the bottom plate 1 is hollow, fixing plates are fixedly connected to both ends of the top of the bottom plate 1, a same cross rod 2 is fixedly connected between the two fixing plates and horizontally arranged, a sliding sleeve 3 is sleeved on the surface of the cross rod 2 and slides on the surface of the cross rod 2, the hollow plate 5 is fixedly connected to the center of the top of the sliding sleeve 3 and vertically arranged, supporting legs 9 slide on both ends of the bottom plate 1, a synchronous moving mechanism for synchronously moving the two supporting legs 9 is arranged in the bottom plate 1, a bolt 4 is connected to one side of the sliding sleeve 3 through threads, the top end of the bolt 4 penetrates through one side of the sliding sleeve 3 and abuts against one side of the cross rod 2, a sleeve 6 is horizontally arranged on one side of the hollow plate 5, an up-down moving mechanism for up-down moving the sleeve 6 is arranged in the hollow plate 5, and an L-shaped rod 7 is arranged at one end of the sleeve 6, and the top end of the transverse edge of the L-shaped rod 7 slides in the sleeve 6, a first moving mechanism for moving the L-shaped rod 7 is arranged in the sleeve 6, and the bottom of the vertical edge of the L-shaped rod 7 is provided with a cylinder 8 and is horizontally arranged.

According to the utility model, the synchronous moving mechanism comprises a screw rod 10, sliding plates 11 are respectively arranged at two ends in the bottom plate 1 in a sliding manner, the screw rod 10 rotates in the bottom plate 1 and is horizontally arranged, the screw rod 10 penetrates through the two sliding plates 11 and is connected to the insides of the two sliding plates 11 through threads, and the thread directions of the screw rod 10 connected with the two sliding plates 11 are opposite.

According to the utility model, a first notch is formed in the bottom of a bottom plate 1, the bottoms of two sliding plates 11 are fixedly connected with first convex columns and respectively fixedly connected to the centers of the tops of two supporting legs 9 through the first notches, a first knob is rotated on one side of the bottom plate 1, and the top end of a screw rod 10 penetrates through the bottom plate 1 and is installed in the center of one side of the first knob.

According to the utility model, the up-down moving mechanism comprises a screw rod 12, the screw rod 12 is rotated inside the hollow plate 5 and is vertically arranged, a sliding block 13 slides inside the hollow plate 5, the screw rod 12 is connected inside the sliding block 13 through threads, a second notch is formed in one side of the hollow plate 5, a second convex column is installed on one side of the sliding block 13 and penetrates through the second notch to be connected with one end of the sleeve 6, a second knob is rotated on the top of the hollow plate 5, and the top end of the screw rod 12 penetrates through the top of the hollow plate 5 and is installed in the center of one side of the second knob.

According to the utility model, the first moving mechanism comprises an electric telescopic rod 14, the electric telescopic rod 14 is horizontally arranged at one end inside the sleeve 6, and an output shaft of the electric telescopic rod 14 is arranged at the top end of the transverse edge of the L-shaped rod 7.

The working principle is as follows: in actual use, when a screw needs to be positioned, the screw is firstly placed in the cylinder 8, the first knob drives the screw rod 10 to rotate, the screw rod 10 rotates to drive the two sliding plates 11 to synchronously move, the two sliding plates 11 synchronously move to drive the two first protruding columns to move, the two protruding columns move to drive the two supporting legs 9 to synchronously move, so that the positioning device can be fixed, the situation of shaking in use is avoided, the using effect of the device is further improved, after the device is fixed, the left and right positions of the cylinder 8 can be adjusted by moving the sliding sleeve 3, after the left and right adjustment is completed, the sliding sleeve 3 is fixed through the bolt 4, the second knob drives the screw rod 12 to rotate, the screw rod 12 rotates to drive the sliding block 13 to move, the sliding block 13 drives the sleeve 6 to move, the sleeve 6 drives the L-shaped rod 7 to move, the L-shaped rod 7 moves to drive the cylinder 8 to move up and down, finally, the L-shaped rod 7 is driven to move through the electric telescopic rod 14, the L-shaped rod 7 drives the cylinder 8 to move back and forth, and further the screw can be adjusted in all directions, so that the screw is accurately positioned, different acetabulum posterior columns can be positioned, and the practicability of the device is improved.

Having shown and described the basic principles and essential features of the utility model and its advantages, it will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof, and it is therefore intended that the embodiments be considered as illustrative and not restrictive in all respects, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, any reference signs in the claims being therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An acetabulum posterior column screw positioning device comprises a bottom plate (1) and a hollow plate (5), and is characterized in that the bottom plate (1) is hollow, fixed plates are fixedly connected with both ends of the top of the bottom plate (1), a same cross rod (2) is fixedly connected between the two fixed plates and horizontally arranged, a sliding sleeve (3) is sleeved on the surface of the cross rod (2) and slides on the surface of the cross rod (2), the hollow plate (5) is fixedly connected with the center of the top of the sliding sleeve (3) and vertically arranged, supporting legs (9) slide on both ends of the bottom plate (1), a synchronous moving mechanism for synchronously moving the two supporting legs (9) is arranged in the bottom plate (1), a bolt (4) is connected with one side of the sliding sleeve (3) through a thread, the top end of the bolt (4) passes through one side of the sliding sleeve (3) and abuts against one side of the cross rod (2), hollow core plate (5) one side slides and has sleeve (6) and level setting, and hollow core plate (5) inside is equipped with the reciprocating mechanism who is used for reciprocating sleeve (6), sleeve (6) one end is provided with L type pole (7), and the horizontal limit top of L type pole (7) slides inside sleeve (6), sleeve (6) inside is equipped with the first moving mechanism who is used for removing L type pole (7), L type pole (7) erect the limit bottom and install drum (8) and level setting.

2. The acetabulum posterior column screw positioning device according to claim 1, wherein the synchronous moving mechanism comprises a screw rod (10), sliding plates (11) are respectively arranged at two ends of the inside of the bottom plate (1), the screw rod (10) rotates inside the bottom plate (1) and is horizontally arranged, the screw rod (10) passes through the two sliding plates (11) and is connected inside the two sliding plates (11) through threads, and the thread directions of the screw rod (10) connecting the two sliding plates (11) are opposite.

3. The acetabulum posterior column screw positioning device according to claim 2, wherein a first notch is formed in the bottom of the bottom plate (1), a first convex column is fixedly connected to the bottom of each of the two sliding plates (11) and passes through the first notch to be fixedly connected to the center of the top of each of the two supporting legs (9), a first knob is rotated on one side of the bottom plate (1), and the top end of the screw rod (10) passes through the bottom plate (1) and is mounted at the center of one side of the first knob.

4. The acetabulum posterior column screw positioning device according to claim 3, wherein the up-down moving mechanism comprises a lead screw (12), the lead screw (12) rotates inside the hollow plate (5) and is vertically arranged, a sliding block (13) slides inside the hollow plate (5), the lead screw (12) is connected inside the sliding block (13) through threads, a second notch is formed in one side of the hollow plate (5), a second convex column is installed on one side of the sliding block (13) and passes through the second notch to be connected with one end of the sleeve (6), a second knob rotates on the top of the hollow plate (5), and the top end of the lead screw (12) passes through the top of the hollow plate (5) and is installed at the center of one side of the second knob.

5. The acetabulum posterior column screw positioning device according to claim 4, wherein the first moving mechanism comprises an electric telescopic rod (14), the electric telescopic rod (14) is horizontally installed at one end inside the sleeve (6), and an output shaft of the electric telescopic rod (14) is installed at the top end of the transverse edge of the L-shaped rod (7).