CN110432960A - It is a kind of for resetting the jack-up device of collapsed fracture block - Google Patents

Abstract

The invention discloses a jack-up device for resetting collapsed fractures. The key points of its technical solution include a push rod body and a positioning device. The end of the push rod body is provided with a first magnet. A second magnet that magnets attract each other, and a pointing laser lamp that is arranged on the second magnet and can pass through a laser corresponding to the position of the first magnet, and a steering mounting frame for the second magnet to be installed on it, turning The mounting bracket includes a mounting ring for installing the second magnet, and a turret connected to the mounting ring in an axial rotation manner. The mounting ring is arranged in a circular structure, and the second magnet is axially rotatably connected in the mounting ring, and the turret is C. The glyph structure is set, the installation ring is axially connected to the opening of the turret, the rotation axis of the second magnet in the installation ring is perpendicular to the rotation axis of the installation ring on the turret, and the jack can overcome unclear Disadvantages of the position of the top rod when the platform returns.

Description

A jack-up device for resetting collapsed fracture fragments

technical field

The invention relates to the technical field of medical instruments, more specifically, it relates to a jacking device for resetting collapsed fracture fragments.

Background technique

High-violence injuries can easily lead to tibial plateau collapse and fracture, and poor reduction can easily lead to unstable force lines, which can cause traumatic arthritis and bring great pain to patients. In order to solve the tibial plateau collapse fracture, during the operation, the operator needs to "open a window" in the tibial diaphysis under the tibial plateau (remove part of the cortex with a bone knife), and then insert the top rod under the tibial plateau to lift the collapsed bone. The articular cartilage is then fixed by bone grafting.

However, the above-mentioned surgical repair method for the tibial plateau collapse area has the disadvantage that although the operator can look directly at the tibial plateau and see the collapsed position, it cannot guarantee that the top rod will be inserted into the medullary cavity just below the collapsed fracture , resulting in the failure of the surgery to achieve the desired results.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a jacking device for resetting collapsed fracture fragments, which can overcome the disadvantage of not knowing the position of the jacking rod when the platform is reset.

In order to achieve the above object, the present invention provides the following technical solutions: a jacking device for resetting collapsed fractures, including a jacking rod body, and the jacking device also includes a positioning device for detecting and positioning the position of the end of the jacking rod body A first magnet is provided in the end of the push rod body for extending into the medullary cavity, and the positioning device includes a second magnet that can attract each other with the first magnet, and is arranged on the second magnet and can pass through the irradiation A pointing laser lamp that emits a laser corresponding to the position of the first magnet, and a steering mount for the second magnet to be installed thereon, the pointing laser light is located on the second magnet toward the middle of the end face of the first magnet, so The steering installation frame includes an installation ring for installing the second magnet, and a turret that is axially rotatably connected to the installation ring. The installation ring is arranged in a circular structure, and the second magnet is axially rotatably connected to the Inside, the turret is arranged in a C-shaped structure, the installation ring is axially connected to the opening of the turret, and the rotation axis of the second magnet in the installation ring is the same as the rotation axis of the installation ring on the turret. Vertically arranged, the second magnet can drive the second magnet in the mounting ring and/or the mounting ring to rotate on the turret when the second magnet approaches the first magnet until the two are attracted to each other.

The present invention is further configured as follows: the opposite sides of the second magnet are provided with a rotation shaft that is rotatably connected to the installation ring, the second magnet is axially rotatably connected in the installation ring through the rotation shaft, and the opposite sides of the installation ring They are also provided with a rotation shaft that is rotatably connected to the turret, and the mounting ring is axially rotatably connected on the turret through the rotation shaft. The rotation shaft is provided with a limiter for limiting the axial movement of the rotation shaft. The limit piece interferes with the inner and outer walls of the mounting ring and the turret.

The present invention is further configured as follows: the second magnet includes a mounting seat rotatably connected to the mounting ring, the second magnet is fixedly mounted on the mounting seat, the rotation axis is fixedly connected to the mounting seat, and the second magnet passes through the mounting seat The rotation axis on the top is rotatably connected with the mounting ring.

The present invention is further provided that: the steering mounting frame is made of non-magnetic material.

The present invention is further configured as: bearings are sleeved on the rotation shafts, the inner rings of the bearings are fixedly connected to the rotation shafts, and the installation ring and the turret are provided with mounting brackets for the outer rings of the bearings to be embedded. The through hole, the outer diameter of the limiting member is larger than the outer diameter of the bearing.

The present invention is further provided that: the bearing is a plastic bearing.

The present invention is further set up as follows: the push rod body includes a plurality of joint rods whose head and tail ends are abutted in sequence, and a plug located at the top of the push rod body, and a fastening rope fixedly connected to the plug body, and a plug located at the tail end of the push rod body. For the fastening device for fixing the fastening rope, one end of the length direction of the section rod is arranged in a concave arc-shaped surface structure, and the other end is arranged in a convex arc-shaped surface structure, and the arc-shaped surfaces of the two ends of the section rod The radian size is matched, and the joint rod is coaxially provided with a connection through hole for the fastening rope to pass through, and the connection through hole is set through the arc-shaped surfaces at both ends of the joint rod.

The present invention is further provided that: the fastening device includes a fastening handle fixedly connected to the tail end of the push rod body and a fastening nut screwed on the fastening handle, and the fastening rope passes through one end of the fastening handle Connect with fastening nut.

In summary, the present invention has the following beneficial effects: during the tibial plateau collapse fracture operation, the operator first "opens the window" at the tibial diaphysis under the tibial plateau (remove part of the cortex with a bone knife), and then puts the top rod body Extend from the "window" into the medullary cavity to the lower part of the tibial plateau, and then move the steering mounting frame to make the second magnet gradually approach the first magnet until the second magnet and the first magnet can attract each other. Attracted by the first magnet, the second magnet can drive the second magnet to rotate in the mounting ring and/or the mounting ring on the turret, so that the pointing laser light arranged on the end face of the second magnet can fall on the tibia by emitting light. The platform guides the position corresponding to the first magnet, that is, the end position where the top rod body extends into the medullary cavity, so that the operator can lift the collapsed articular cartilage through the top rod body, and then fix the bone graft until the operation is completed.

In the above solution, based on the fact that the second magnet and the first magnet can attract each other, the fingering laser light can mark the position of the end of the push rod body corresponding to the tibial plateau through the irradiated light, so that the push rod body can Accurately jack up the collapsed fracture surface without affecting other normal articular surfaces, thus effectively improving the surgical effect.

Description of drawings

Fig. 1 is the sectional view of push rod body;

Fig. 2 is a three-dimensional structural schematic diagram of a positioning device;

Fig. 3 is a structural schematic diagram of the steering mounting bracket.

Reference signs: 1, push rod body; 11, top; 111, first magnet; 12, section rod; 121, connection through hole; 13, fastening rope; 14, fastening device; 141, fastening handle; 142 , fastening nut; 2, positioning device; 21, second magnet; 22, pointing laser light; 23, steering mounting frame; 231, mounting ring; 232, turret; , Limit parts.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "bottom" and "top "Face", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

Referring to Figures 1-3, a jacking device for resetting collapsed fractures includes a jacking rod body 1, and the jacking device also includes a positioning device 2 for detecting and positioning the end position of the jacking rod body 1. The rod body 1 is provided with a first magnet 111 in the end for extending into the medullary cavity, and the positioning device 2 includes a second magnet 21 that can attract each other with the first magnet 111, and is arranged on the second magnet 21 and can pass through the irradiation. Out of the laser pointer 22 corresponding to the position of the first magnet 111, and for the steering mounting frame 23 on which the second magnet 21 is installed, the pointer laser lamp 22 is located on the second magnet 21 towards the first magnet 111 In the middle of the end face, the steering mounting frame 23 includes a mounting ring 231 for mounting the second magnet 21, and a turret 232 axially rotatably connected with the mounting ring 231. The mounting ring 231 is arranged in a circular structure, and the second magnet 21 Rotationally connected in the installation ring 231, the turret 232 is arranged in a C-shaped structure, the installation ring 231 is axially rotatably connected to the opening of the turret 232, and the rotation axis of the second magnet 21 in the installation ring 231 is in line with the installation ring 231 The rotation axis on the turret 232 is vertically arranged, and the second magnet 21 can drive the second magnet 21 in the installation ring 231 and/or the installation ring 231 in the process of the second magnet 21 approaching the first magnet 111 until the two attract each other. Rotate on the turret 232.

During the tibial plateau collapse fracture operation, the operator first “opens a window” at the tibial diaphysis under the tibial plateau (remove part of the cortex with a bone knife), and then extends the mandrel body 1 from the “opened window” into the medullary cavity until the lower part of the tibial plateau, and then move the steering mounting frame 23 so that the second magnet 21 can gradually approach the first magnet 111 until the second magnet 21 and the first magnet 111 can attract each other, the second magnet 21 is affected by the first magnet 111. The attraction of the magnet 111 can drive the second magnet 21 in the mounting ring 231 and/or the mounting ring 231 rotates on the turret 232, so that the pointing laser lamp 22 arranged on the end face of the second magnet 21 can pass through the light falling. Guide the position corresponding to the first magnet 111 on the tibial plateau, that is, the end position where the mandrel body 1 extends into the medullary cavity, so that the operator can use the mandrel body 1 to jack up the collapsed articular cartilage, and then fix the bone graft until Complete the surgery.

In the above scheme, based on the mutual attraction between the second magnet 21 and the first magnet 111, the finger laser light 22 can mark the position of the end of the mandrel body 1 corresponding to the tibial plateau through the irradiated light, so that The mandrel body 1 can accurately lift the collapsed fracture surface without affecting other normal articular surfaces, thereby effectively improving the operation effect.

Both opposite sides of the second magnet 21 are provided with a rotation shaft 234 rotatably connected to the mounting ring 231, the second magnet 21 is axially connected in the mounting ring 231 through the rotation shaft 234, and the opposite sides of the mounting ring 231 are also provided. There is an autorotation shaft 234 rotatably connected to the turret 232, and the mounting ring 231 is axially rotatably connected on the turret 232 through the autorotation shaft 234, and the autorotation shaft 234 is provided with a stopper 235 for restricting the axial movement of the autorotation shaft 234 , the limiting member 235 interferes with the inner and outer walls of the mounting ring 231 and the turret 232 . Through the setting of the rotation shaft 234, the rotation connection between the various parts is realized, the structure is simple and easy to realize, and the stopper 235 is provided to make the structure of the rotation connection more stable, and to avoid axial movement between the various parts and each Parts collide, which affects the guidance accuracy of the pointer laser light 22.

The second magnet 21 includes a mounting base 233 that is rotatably connected to the mounting ring 231. The second magnet 21 is fixedly mounted on the mounting base 233, and the rotation axis 234 is fixedly connected to the mounting base 233. The shaft 234 is rotatably connected with the mounting ring 231 . The installation seat 233 facilitates the rotational connection between the second magnet 21 and the installation ring 231 , and the structure is simple and easy to implement.

The steering mount 23 is made of non-magnetic material. Such as plastic, can prevent the second magnet 21 from being attracted by the steering mounting frame 23 to affect the positioning accuracy of the first magnet 111 .

The rotation shaft 234 is equipped with bearings, the inner ring of the bearing is fixedly connected to the rotation shaft 234, the installation ring 231 and the turret 232 are provided with installation through holes for the outer ring of the bearing to be embedded, and the limiter 235 The outer diameter dimension is larger than the outer diameter dimension of the bearing. The arrangement of the bearing improves the flexibility of the rotation at the rotation axis 234, facilitates the rotation of the mounting ring 231 and the mounting seat 233, and helps to improve the accuracy of pointing the laser light 22 at the end of the push rod body 1.

Bearings are plastic bearings. The plastic bearing is a known technology, and a common design can be adopted, which can prevent the second magnet 21 from being attracted by the bearing and affect the positioning accuracy of the first magnet 111 .

The push rod body 1 includes a plurality of section rods 12 which are abutted against one another in turn, and a top 11 positioned at the top of the top rod body 1, and is fixedly connected to the fastening rope 13 with the top head 11, and is positioned at the tail end of the push rod body 1 for The fastening device 14 for fixing the fastening rope 13, one end of the lengthwise direction of the section rod 12 is arranged in a concave arc-shaped surface structure, and the other end is arranged in a convex arc-shaped surface structure, the arc of the arc-shaped surface at both ends of the section rod 12 The dimensions match, and the joint rod 12 is coaxially provided with a connecting through hole 121 for the fastening rope 13 to pass through. After the fastening device 14 loosens the fastening rope 13, the ends of each section rod 12 can be rotated by rotating each section rod 12 so that the bending direction and bending angle of the ejector rod body 1 can be adjusted. After the adjustment is completed The fastening device 14 can be used to tighten and fix the fastening rope 13 so that the ends of each section rod 12 can be shaped in the abutting state, so that the push rod body 1 can be bent into various styles for use in various operations environment, thereby effectively improving the flexibility and scope of application of the mandrel body 1 .

Moreover, an elastic pad for increasing friction can also be provided at one end of the section rod 12 in the length direction. The plunger body 1 can maintain a stable use structure during the operation, which is beneficial to improve the use effect of the plunger body 1 .

Tightening device 14 comprises the fastening handle 141 that is fixedly connected in push rod body 1 tail end and the fastening nut 142 that is screwed on the fastening handle 141, and fastening rope 13 passes one end of fastening handle 141 and fastens. Nut 142 connection. The fastening nut 142 can slide along the length direction of the fastening handle 141 during the rotation process on the fastening handle 141, so that the tightness of the fastening rope 13 can be easily adjusted, and the structure is simple and easy to implement, easy to operate, and convenient for the operator to adjust use.

The above are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention should also be regarded as the protection scope of the present invention.

Claims (8)

1. A jacking device for resetting collapsed fracture fragments, comprising a push rod body (1), characterized in that: the jacking device also includes a positioning device ( 2), the push rod body (1) is provided with a first magnet (111) in the end for extending into the medullary cavity, and the positioning device (2) includes a magnet that can attract each other with the first magnet (111). The second magnet (21), and being arranged on the second magnet (21) can pass through the pointing laser lamp (22) that irradiates the laser corresponding to the position of the first magnet (111), and is used for supplying the second magnet (21) The steering mounting frame (23) installed thereon, the said pointing laser light (22) is positioned on the second magnet (21) toward the end face middle part of the first magnet (111), and the steering mounting frame (23) includes useful The mounting ring (231) on which the second magnet (21) is installed and the turret (232) axially rotatably connected to the mounting ring (231), the mounting ring (231) is arranged in a circular structure, and the first The two magnets (21) are axially rotatably connected in the mounting ring (231), the turret (232) is arranged in a C-shaped structure, and the mounting ring (231) is axially rotatably connected to the opening of the turret (232) , the rotation axis of the second magnet (21) in the installation ring (231) is perpendicular to the rotation axis of the installation ring (231) on the turret (232), and the second magnet (21) faces the first magnet (111) can drive the second magnet (21) in the mounting ring (231) and/or the mounting ring (231) to rotate on the turret (232) until the two attract each other in the process of approaching. 2. A jack-up device for resetting collapsed fracture fragments according to claim 1, characterized in that: the opposite sides of the second magnet (21) are provided with mounting rings (231) that are rotatably connected to each other. The rotation shaft (234), the second magnet (21) is connected axially in the installation ring (231) through the rotation shaft (234), and the opposite sides of the installation ring (231) are also provided with a rotating frame (232 ) rotating shaft (234) connected by rotation, the mounting ring (231) is axially connected on the turret (232) through the rotation shaft (234), and the rotation shaft (234) is provided with a ring for limiting the rotation shaft (234) A limiting member (235) that produces axial movement, the limiting member (235) interferes with the inner and outer walls of the mounting ring (231) and the rotating frame (232). 3. A jack-up device for resetting collapsed fractures according to claim 2, characterized in that: the second magnet (21) includes a mounting seat (233) that is rotatably connected to the mounting ring (231) , the second magnet (21) is fixedly mounted on the mounting base (233), the rotation axis (234) is fixedly connected to the mounting base (233), and the second magnet (21) passes through the rotation on the mounting base (233) The shaft (234) is rotatably connected with the mounting ring (231). 4. A jacking device for resetting a collapsed fracture according to any one of claims 1-3, characterized in that: the steering mount (23) is made of non-magnetic material. 5. A jack-up device for resetting collapsed fractures according to claim 2 or 3, characterized in that: said rotation shaft (234) is sleeved with bearings, and the inner rings of said bearings are fixedly connected On the rotation shaft (234), the installation ring (231) and the turret (232) are provided with installation through holes for the outer ring of the bearing to be embedded, and the outer diameter of the stopper (235) is larger than The outer diameter of the bearing. 6. A jack for resetting collapsed fracture fragments according to claim 5, characterized in that: said bearing is a plastic bearing. 7. A jacking device for resetting collapsed fractures according to claim 1, characterized in that: the jacking rod body (1) includes a number of joint rods (12) whose head and tail ends are abutted in sequence, and The top (11) that is positioned at the top of the push rod body (1), and the fastening rope (13) that is fixedly connected with the top head (11) and is used to fix the fastening rope (13) at the rear end of the push rod body (1) Fastening device (14), one end of the section rod (12) in the length direction is arranged in a concave arc-shaped surface structure, and the other end is arranged in a convex arc-shaped surface structure, and the two ends of the section rod (12) are arc-shaped The radian size of the shaped surface is suitable, and the joint rod (12) is coaxially provided with a connection through hole (121) for passing the fastening rope (13), and the connection through hole (121) runs through the joint rod ( 12) The arc surfaces at both ends are set. 8. A jacking device for resetting collapsed fracture fragments according to claim 7, characterized in that: the fastening device (14) includes a fastening handle fixedly connected to the tail end of the push rod body (1) (141), and the fastening nut (142) screwed on the fastening handle (141), the fastening rope (13) passes through one end of the fastening handle (141) and is connected with the fastening nut (142).