CN112535524B

CN112535524B - Tibial plateau resetting device that sinks

Info

Publication number: CN112535524B
Application number: CN202011390252.1A
Authority: CN
Inventors: 郑轶; 殷一红; 张嘉锴; 吴君龙; 袁欣华
Original assignee: Ningbo Huamei Hospital University of CAS
Current assignee: Ningbo Huamei Hospital University of CAS
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2022-03-08
Anticipated expiration: 2040-12-02
Also published as: CN112535524A

Abstract

The invention discloses a tibial plateau collapse reduction device which comprises a positioning tube, wherein a holding handle is sleeved on the outer side of the positioning tube in a threaded manner, a pressing device body is inserted in the positioning tube in a sliding manner, a Kirschner wire is inserted in the pressing device body, a supporting plate is fixed at the top of the holding handle, and a limiting mechanism for tibial plateau collapse reduction is installed on the supporting plate.

Description

Tibial plateau resetting device that sinks

Technical Field

The invention relates to the technical field of tibial plateau collapse reduction, in particular to a tibial plateau collapse reduction device.

Background

The contact surface of the tibia and the femur is a tibial plateau, namely a metaphysis end and a joint surface of the proximal end of the tibia, and the tibial plateau collapse fracture is a typical intra-articular fracture, and the processing and prognosis of the fracture can have great influence on the function of the knee joint.

At present, when the bone part of the platform which is collapsed is firstly corrected and restored and then lifted to a normal position again in the process of orthopaedic tibial platform collapse fracture surgery, the existing method is pushed and corrected by a common rod-shaped object (a screwdriver, a screwdriver and the like), when the bone part is corrected, because the collapsed part is at any position of the tibial platform, when the collapsed part is repaired, a proper position is selected for inserting, so as to avoid causing secondary damage to the collapsed part, but when the outer edge of some tibial platforms are collapsed and inserted, as shown in figure 8, the shadow part is a tibial collapse area, when the inserting end a and the limiting end b are mutually matched to realize positioning, after the inserting end a is inserted, the limiting end b has corresponding force to act on the tibia, so that secondary damage to the affected part is easily caused, and iatrogenic fracture is possibly caused, influence the reduction effect of follow-up bone surgery, for this reason, we propose a tibial plateau resetting means that sinks.

Disclosure of Invention

The invention aims to provide a tibial plateau collapse reduction device capable of avoiding secondary damage and iatrogenic fracture to a tibia in a positioning process so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a tibial plateau resetting means that sinks, includes the registration arm, the handle is cup jointed to the registration arm outside screw thread, and slides in the registration arm and peg graft and have the ware body of suppressing, it has the kirschner wire to peg graft in the ware body, it is fixed with the backup pad to hold the handle top, and installs the stop gear who is used for tibial plateau to sink the usefulness that resets in the backup pad.

Preferably, stop gear includes the spliced pole, two sliding plates have all been fixed with the arc arm on the spliced pole to the slip cup joint, two the sliding plate outer end all is fixed with the arc arm, and has all opened the sliding tray in the arc arm, the sliding tray internal fixation has the arc pole, and installs spacing arm on the arc pole, spliced pole outer end screw thread has cup jointed the stop collar, realizes stablizing spacing after the location pipe location through stop gear.

Preferably, spacing arm cup joints the slider on the arc pole including sliding, the slider bottom is fixed with the connecting plate, and the connecting plate internal thread pegs graft and have spacing post, spacing post is close to bone one end and is the cone structure, and the other end is fixed with the swivel nut, the slider outside is fixed with the setting element that is used for spacing post location, realizes the contact location with the bone through spacing arm for the registration arm can accurate location.

Preferably, the setting element includes limiting plate and gag lever post, set up a spacing groove in the limiting plate, and the limiting plate is fixed in arc arm bottom, the gag lever post slides and runs through the spacing groove, and one end and slider outer wall fixed connection, and other end screw thread has cup jointed spacing cap, realizes the location to spacing post through the setting element for easy skew can not appear after the location.

Preferably, the outer diameter of the kirschner wire is consistent with the inner diameter of the pressure applying device body, and the outer diameter of the pressure applying device body is consistent with the inner diameter of the positioning pipe, so that the kirschner wire and the pressure applying device body can move accurately and stably when moving.

Preferably, an air sliding hammer is sleeved on the outer side of the kirschner wire in a sliding mode, and the air sliding hammer is used for pushing the presser body, so that the presser body can be slowly and accurately moved to a proper position.

Preferably, two the arc arm is kept away from the sliding plate one end outside and is fixed with locating lever and joint pole respectively, and locating lever and joint pole outside cover have a spacing ring, the locating lever top is fixed with the limiting plate, overlaps in the locating lever and the joint pole outside through the spacing ring, realizes the spacing to the arc arm for it is fixed more stable.

Preferably, the connecting plate both sides are fixed with spacing post outside sliding connection's firm cover for the removal of spacing post is more steady, and the location is more stable.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the limiting arms on the two arc-shaped arms in the limiting mechanism are contacted with the outer side of the tibia, so that the positioning tube can be limited and can be kept away from a collapse area on the tibial platform as far as possible, the peripheral bone of the collapse area can be prevented from being damaged in the subsequent repair operation, and the secondary injury and the generation of iatrogenic fracture are reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic structural view of a limiting mechanism of the present invention;

FIG. 4 is a schematic diagram of the position relationship between the body of the punch and the Kirschner wire according to the present invention;

FIG. 5 is a schematic view of the connection between a positioning member and a position-limiting arm according to the present invention;

FIG. 6 is a schematic view of the connection between the positioning rod and the clamping rod according to the present invention;

FIG. 7 is an enlarged view taken at A in FIG. 3;

fig. 8 is a schematic view of the positioning of a prior art tibial plateau collapse repair surgery.

In the figure: 1-a positioning tube; 2-holding the handle; 3-the body of the punch; 4-k-wire; 5-a support plate; 6-a limiting mechanism; 7-connecting column; 8-a sliding plate; 9-an arc-shaped arm; 10-a sliding groove; 11-an arc-shaped rod; 12-a spacing arm; 13-a slide block; 14-a connecting plate; 15-a limiting column; 16-turning the cap; 17-a positioning element; 18-a limiting plate; 20-a limiting groove; 21-a limit cap; 22-air slide hammer; 23-positioning rods; 24-a click rod; 25-a stabilizing sleeve; 26-a stop collar; 27-a stop collar; 28-limit table.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the tibial plateau collapse resetting device in the drawings comprises a positioning tube 1, a holding handle 2 is sleeved on the outer side of the positioning tube 1 through threads, the positioning tube 1 can rotate in the holding handle 2, so that the position of the positioning tube 1 is adjusted, a pressurizer body 3 is inserted in the positioning tube 1 in a sliding mode, a kirschner wire 4 is inserted in the pressurizer body 3, a supporting plate 5 is fixed to the top of the holding handle 2, and a limiting mechanism 6 for tibial plateau collapse resetting is installed on the supporting plate 5.

The limiting mechanism 6 comprises a connecting column 7, two sliding plates 8 are slidably sleeved on the connecting column 7, arc-shaped arms 9 are fixed at the outer ends of the two sliding plates 8, the two arc-shaped arms 9 can be sleeved on the periphery of a tibia, so that different positions of the tibia can be fixed in a contact manner, sliding grooves 10 are formed in the arc-shaped arms 9, arc-shaped rods 11 are fixed in the sliding grooves 10, limiting arms 12 are mounted on the arc-shaped rods 11, and limiting sleeves 26 are sleeved at the outer ends of the connecting column 7 in a threaded manner;

the limiting arm 12 comprises a sliding block 13 which is sleeved on the arc-shaped rod 11 in a sliding mode, a connecting plate 14 is fixed to the bottom of the sliding block 13, a limiting column 15 is inserted into the inner thread of the connecting plate 14, one end, close to a bone, of the limiting column 15 is of a cone structure, a rotating cap 16 is fixed to the other end of the limiting column 15, a positioning piece 17 used for positioning the limiting column 15 is fixed to the outer side of the sliding block 13, and a worker rotates the rotating cap 16 to drive the limiting column 15 to be in contact with the outer wall of the bone, so that the limiting is convenient to fix and limit;

meanwhile, the positioning piece 17 comprises a limiting plate 18 and a limiting rod, a limiting groove 20 is formed in the limiting plate 18, the limiting plate 18 is fixed to the bottom of the arc-shaped arm 9, the limiting rod slides to penetrate through the limiting groove 20, one end of the limiting rod is fixedly connected with the outer wall of the sliding block 13, a limiting cap 21 is sleeved on the other end of the limiting rod in a threaded mode, a person can rotate the limiting cap 21, the limiting cap 21 is extruded and attached to the limiting plate 18, and therefore positioning is achieved.

Carry out spacing principle that prevents follow-up damage that causes to registration arm 1: firstly, analyzing the tibia of a patient, determining the position of the tibia platform collapsed, analyzing the wound of the collapsed position of the tibia platform through related medical equipment, aligning the positioning tube 1 to the found position, loosening the limiting sleeve 26, opening the two arc-shaped arms 9, winding the two arc-shaped arms on the outer side of the tibia, simultaneously, the limiting cap 21 is unscrewed, the limiting arm 12 is moved, the limiting column 15 can be contacted with the outer side of the tibia far away from the collapse position, then the limiting cap 21 is screwed down, the limiting column 15 can be stably positioned, then the limiting sleeve 26 is screwed down, the arc-shaped arm 9 is limited, then a person inserts the Kirschner wire 4 into the positioning tube 1 by means of a tool, after the insertion is finished, the air slide hammer 22 is used for knocking the presser body 3, the presser body 3 can move slowly and stably towards the tibia, so that the place where the tibial plateau collapses is slowly restored to the original normal position.

In addition, in order to enable the Kirschner wire 4 and the presser body 3 to move more stably, the outer diameter of the Kirschner wire 4 is consistent with the inner diameter of the presser body 3, and the outer diameter of the presser body 3 is consistent with the inner diameter of the positioning tube 1;

meanwhile, in order to facilitate the medical staff to stably push the depressor body 3, the air slide hammer 22 is sleeved outside the kirschner wire 4 in a sliding manner, and stable pushing is realized by using the impact of the air slide hammer 22.

In addition, two arc arms 9 are kept away from the 8 one end outsides of sliding plate and are fixed with locating lever 23 and joint pole 24 respectively, and the cover has spacing ring 27 outside locating lever 23 and joint pole 24, locating lever 23 top is fixed with spacing platform 28, and after two arc arms 9 locks, through personnel with spacing ring 27 cover in the locating lever 23 and the joint pole 24 outside, wherein locating lever 23 and joint pole 24 are two semicircle poles of mutually supporting, and locating lever 23 length is higher than joint pole 24 length for it is more convenient when later stage takes off spacing ring 27.

In addition, in order to make the movement of the limit post 15 more stable, a stable sleeve 25 connected with the outside of the limit post 15 in a sliding manner is fixed on both sides of the connecting plate 14.

In the scheme, the two limiting arms 12 are flexibly moved, so that when the positioning tube 1 is limited, the positioning tube can be prevented from being in close contact with a place where the tibial plateau is collapsed, and secondary injury and iatrogenic fracture are reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a tibial plateau resetting means that collapses, includes registration arm (1), its characterized in that: the outer side of the positioning tube (1) is in threaded sleeve connection with a holding handle (2), the positioning tube (1) is internally and slidably inserted with a pressing device body (3), a Kirschner wire (4) is inserted in the pressing device body (3), a supporting plate (5) is fixed at the top of the holding handle (2), a limiting mechanism (6) for collapse and reset of a tibial platform is installed on the supporting plate (5), the limiting mechanism (6) comprises a connecting column (7), two sliding plates (8) are slidably sleeved on the connecting column (7), arc-shaped arms (9) are fixed at the outer ends of the two sliding plates (8), sliding grooves (10) are formed in the arc-shaped arms (9), arc-shaped rods (11) are fixed in the sliding grooves (10), limiting arms (12) are installed on the arc-shaped rods (11), and limiting sleeves (26) are in threaded sleeve connection with the outer ends of the connecting column (7), spacing arm (12) including slip cup joint slider (13) on arc pole (11), slider (13) bottom is fixed with connecting plate (14), and connecting plate (14) internal thread is pegged graft and is had spacing post (15), spacing post (15) are close to bone one end and are the cone structure, and the other end is fixed with and change cap (16), slider (13) outside is fixed with setting element (17) that are used for spacing post (15) location.

2. The tibial plateau collapsing reduction device of claim 1, wherein: the locating piece (17) comprises a limiting plate (18) and a limiting rod, a limiting groove (20) is formed in the limiting plate (18), the limiting plate (18) is fixed to the bottom of the arc-shaped arm (9), the limiting rod penetrates through the limiting groove (20) in a sliding mode, one end of the limiting rod is fixedly connected with the outer wall of the sliding block (13), and a limiting cap (21) is sleeved on the other end of the limiting rod in a threaded mode.

3. The tibial plateau collapsing reduction device of claim 2, wherein: the outer diameter of the Kirschner wire (4) is consistent with the inner diameter of the pressing device body (3), and the outer diameter of the pressing device body (3) is consistent with the inner diameter of the positioning tube (1).

4. The tibial plateau collapsing reduction device of claim 3, wherein: an air sliding hammer (22) is sleeved on the outer side of the Kirschner wire (4) in a sliding manner.

5. The tibial plateau collapsing reduction device of claim 4, wherein: two arc arm (9) keep away from sliding plate (8) one end outside and are fixed with locating lever (23) and joint pole (24) respectively, and locating lever (23) and joint pole (24) outside cover have spacing ring (27), locating lever (23) top is fixed with spacing platform (28).

6. The tibial plateau collapsing reduction device of claim 5, wherein: and stabilizing sleeves (25) which are in sliding connection with the outer sides of the limiting columns (15) are fixed on two sides of the connecting plate (14).