CN213047236U

CN213047236U - Accurate positioning and resetting device for collapsed fracture of tibial plateau

Info

Publication number: CN213047236U
Application number: CN202021011663.0U
Authority: CN
Inventors: 刘靖; 朱道平; 陈洋
Original assignee: Gongan county people's hospital
Current assignee: Gongan county people's hospital
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-04-27
Anticipated expiration: 2030-06-05

Abstract

The utility model relates to a positioning and resetting device, concretely relates to accurate positioning and resetting device of fracture that tibial plateau sinks. One end of the hand-held handle is provided with an assembly positioning hole, a positioning piece is installed in the assembly positioning hole through threads, a central hole penetrates through the positioning piece along the axial direction of the positioning piece, and a guide needle penetrates through the central hole of the positioning piece in an axial penetrating and movable mode; the other end of the hand-held handle is provided with an assembly sliding groove, a positioning screw rod is fixedly arranged at the center of the bottom surface of the assembly sliding groove, and a sighting arm is slidably arranged on the positioning screw rod through a limiting nut; the guide needle can be sleeved with a reset rod along the axial direction. During the operation of the positioning and resetting device, the aiming arm and the positioning piece can be adjusted on the handheld handle, so that the aiming arm and the positioning piece are matched with each other to have larger use space; the guide needle through the bar that resets and the cooperation of the bar that resets enable the articular surface that sinks and carry out accurate the reduction, the misery when still having alleviateed the patient operation is particularly suitable for the tibial plateau department of collapsing to reset the operation treatment.

Description

Accurate positioning and resetting device for collapsed fracture of tibial plateau

Technical Field

The utility model relates to a positioning and resetting device, concretely relates to accurate positioning and resetting device of fracture that tibial plateau sinks.

Background

The tibial plateau refers to the articular surface of the tibia, which is an important load structure of the knee joint, once fracture occurs, the tibial plateau is easy to collapse, the tibial plateau cannot be self-healed after collapse, when the articular surface collapses and steps appear, the articular surface is uneven, friction is caused between thighbone and the tibial plateau, cartilage is easy to abrade or subchondral bone is exposed, subchondral bone has abundant nerves, and pain can appear when a patient moves, so that the patient who collapses the tibial plateau needs to be subjected to surgical treatment.

At present, fracture reduction of tibial platform collapse is mainly large incision open type positioning windowing reduction according to doctor experience, and the reduction mode has problems: 1. the reduction of the large-incision open surgery has great damage to the patient, influences the treatment result, needs to be operated under the condition of direct vision of the exposed fracture collapse part in the surgery, needs to enlarge the surgery range, and has the problems of aggravating pain of the patient and fracture injury; 2. the condition that windowing positioning deviates from the position of a collapsed tibial platform can occur due to some interference in the operation process by means of years of operation experience of a doctor for positioning windowing resetting, so that the operation time is easily prolonged, and meanwhile, a quantification means is lacked during resetting, accurate resetting of a collapsed articular surface cannot be realized, resetting is difficult, and the expected treatment effect cannot be achieved. Therefore, there is a need for improvement thereof.

Disclosure of Invention

To the above-mentioned not enough, the utility model aims to: the tibial plateau collapse fracture precise positioning and resetting device is simple in operation and convenient to use, effectively reduces operation time, relieves pain of a patient, has quantification means, and can achieve precise resetting of a tibial plateau collapse part.

The technical scheme of the utility model is that:

an accurate positioning and resetting device for tibial plateau collapse fracture, which consists of a handheld handle, a positioning piece, a sighting arm, a guide needle and a resetting rod; the method is characterized in that: one end of the hand-held handle is provided with an assembly positioning hole, a positioning piece is installed in the assembly positioning hole through threads, a central hole penetrates through the positioning piece along the axial direction of the positioning piece, and a guide needle penetrates through the central hole of the positioning piece in an axial penetrating and movable mode; the other end of the hand-held handle is provided with an assembly sliding groove, a positioning screw rod is fixedly arranged at the center of the bottom surface of the assembly sliding groove, a sighting arm is slidably arranged on the positioning screw rod through a limiting nut, and a reset rod can be sleeved on the guide needle along the axial direction of the guide needle.

The assembly positioning hole is axially arranged on the handheld handle in a Y-axis mode, and internal threads are arranged on the inner wall of the assembly positioning hole.

The assembly sliding groove is in an arc shape and is arranged on the handheld handle in the X-axis axial direction.

The hand-held handle is in an arc shape.

Aiming arm include the stiff end of being connected with handheld handle and the free end of keeping away from handheld handle, aim the arm and be "7" word form, the tip of keeping away from the free end of handheld handle is provided with the location hook, stiff end and assembly spout cooperation sliding connection of being connected with handheld handle are provided with the spacing groove on the stiff end of being connected with handheld handle, spacing groove and positioning screw sliding connection.

The locating piece be cylindric, be provided with the antiskid tooth on the one end of locating piece, the other end of locating piece is equipped with the regulation head admittedly, is provided with the through-hole along the locating piece axial on the regulation head, the through-hole corresponds the intercommunication with the centre bore of locating piece, be provided with the external screw thread on the setting piece excircle.

The end of one end of the reset rod is in a circular conical head shape, the reset rod penetrates through a guide hole along the axial direction of the reset rod, and the guide hole is inserted with the guide needle in a matched mode.

The utility model has the advantages that:

when the accurate positioning and resetting device for the tibial plateau collapsed fracture works, a doctor holds the handheld handle, accurately positions the collapsed position of the tibial plateau of a patient through the positioning hook on the aiming arm, does not need to adopt a large-incision open surgery resetting mode, relieves pain of the patient, and solves the problem of fracture injury; the aiming arm and the positioning piece can be adjusted in position on the handheld handle, so that the aiming arm and the positioning piece are matched with each other more flexibly, have larger use space and are more suitable for people; the fixing of the positioning piece can be realized through the anti-skidding teeth on the positioning piece, and the accidental sliding in the operation process is prevented; the cooperation through aiming arm and setting element enables the articular surface bottom that the accurate location of guide pin sinks, removes along the guide pin through the stick that resets, realizes that the stick that resets carries out accurate the reseing to the articular surface that sinks, effectively reduces operation time.

Drawings

FIG. 1 is a schematic view of the present invention with the guide needle removed;

FIG. 2 is a schematic structural view of a positioning member according to the present invention;

FIG. 3 is a schematic structural view of the positioning operation of the guide pin of the present invention;

FIG. 4 is a schematic structural view of the handle of the present invention;

fig. 5 is a schematic structural view of the working state of the reset rod of the present invention.

In the figure: 1. the device comprises a handheld handle, 2, a positioning piece, 3, an aiming arm, 4, an assembly positioning hole, 5, an anti-skidding tooth, 6, an adjusting head, 7, a guide needle, 8, a reset rod, 9, an assembly sliding groove, 10, a positioning hook, 11, an external thread, 12, a limiting groove, 13, a positioning screw rod, 14, a limiting nut, 15, a central hole, 16 and a guide hole.

Detailed Description

The accurate positioning and resetting device for the tibial plateau collapsed fracture is composed of a handheld handle 1, a positioning piece 2, a sighting arm 3, a guide needle 7 and a resetting rod 8; the handheld handle 1 is in an arc shape, so that when a doctor holds the handheld handle 1, fingers can be better attached to the handheld handle 1, the ergonomic requirement is met, and the doctor can hold the handheld handle 1 more easily.

An assembly positioning hole 4 is axially arranged on one end of the handheld handle 1 in a Y axis direction, internal threads are arranged on the inner wall of the assembly positioning hole 4, a positioning piece 2 is installed on the internal threads of the assembly positioning hole 4, the positioning piece 2 is cylindrical, a central hole 15 penetrates through the positioning piece 2 along the axial direction of the positioning piece, external threads 11 are arranged on the excircle of the positioning piece 2, and the internal threads of the assembly positioning hole 4 are in matched threaded connection with the external threads 11 of the positioning piece 2; be provided with anti-skidding tooth 5 on 2 one end open-ended borders of setting element, anti-skidding tooth 5's effect is: preventing the end of the positioning element 2 from sliding when in contact with the bone.

The other end of setting element 2 is equipped with admittedly and adjusts head 6, adjusts head 6 and is discoid, thereby in operation, thereby drives setting element 2 synchronous emergence through manual rotatory regulation head 6 and rotates, because the internal thread of assembly locating hole 4 and the external screw thread 11 cooperation threaded connection of setting element 2, when adjusting head 6 and driving setting element 2 and take place to rotate, upwards or decurrent removal appears in setting element 2 on assembly locating hole 4 for handheld handle 1 to thereby the different positions of collapsing of adaptation carry out effectual location.

The central position of the adjusting head 6 is provided with a through hole along the axial direction of the positioning piece 2, the through hole is communicated with a central hole 15 of the positioning piece 2, a guide needle 7 penetrates through the central hole 15 of the positioning piece 2 in an axial penetrating and moving mode, and the guide needle 7 can move in the central hole 15 of the positioning piece 2 in work.

The reset rod 8 can be sleeved on the guide needle 7 along the axial direction of the guide needle, the end head of one end of the reset rod 8 is in a circular conical head shape, the reset rod 8 penetrates through a guide hole 16 along the axial direction of the reset rod, the guide hole 16 is inserted in the guide needle 7 in a matched mode, in work, when the guide needle 7 is separated from the center hole of the positioning piece 2, the guide hole 16 of the reset rod 8 is sleeved with the guide needle 7 in a matched mode, and the reset rod 8 can slide on the guide needle 7 through the guide hole 16.

The other end of the hand-held handle 1 is provided with an assembly sliding groove 9 in the X-axis axial direction, the assembly sliding groove 9 is in a curved arc shape, a positioning screw 13 is fixedly arranged at the central position of the bottom surface of the assembly sliding groove 9 in the radial direction, an aiming arm 3 is slidably arranged on the positioning screw 13 through a limit nut 14, the aiming arm 3 comprises a fixed end connected with the hand-held handle 1 and a free end far away from the hand-held handle 1, the aiming arm 3 is in a 7-shaped shape, a positioning hook 10 is arranged at the end far away from the free end of the hand-held handle 1, the positioning hook 10 can quickly position the collapse position of a tibial platform of a patient, so that the operation time is effectively shortened, the pain of the patient is relieved, the fixed end connected with the hand-held handle 1 is in sliding connection with the assembly sliding groove 9 of the hand-held handle 1 in a matching manner, the aiming arm 3 can be slightly, meanwhile, the device has larger use space; be provided with spacing groove 12 on the fixed end of being connected with handheld handle 1, spacing groove 12 and positioning screw 13 sliding connection, in operation, spacing groove 12 and the positioning screw 13 cooperation on the aiming arm 3, realize spacingly in the assembly spout 9 of handheld handle 1 aiming arm 3, prevent the assembly spout 9 of handheld handle 1 of aiming arm 3 roll-off, cooperation through spacing nut 14 and positioning screw 13, spacing nut 14 realizes a pressure effect to aiming arm 3, thereby realize through spacing nut 14 that aiming arm 3 forms fixed state on the assembly spout 9 of handheld handle 1.

When the accurate positioning and resetting device for the tibial plateau collapse fracture works, firstly, a doctor holds the handheld handle 1 by a hand, the free end of the aiming arm 3 extends into the tibial plateau collapse part, then the positioning hook 10 on the free end of the aiming arm 3 is anchored on a bone of the tibial plateau collapse part, then the adjusting head 6 rotates clockwise, the adjusting head 6 rotates to drive the positioning piece 2 to synchronously rotate clockwise, at the moment, the positioning piece 2 moves upwards along the assembly positioning hole 4 of the handheld handle 1, after the anti-skidding teeth 5 at the end of the positioning piece 2 are contacted with the bone of a patient, the positioning piece 2 is in a fixed state, the positioning hook 10 of the aiming arm 3 is matched with the central hole 15 of the positioning piece 2, and a state of positioning a straight line at two points is formed between the positioning hook 10 and the central hole 15.

Then, the doctor inserts the guide needle 7 into the through hole of the adjusting head 6, so that the guide needle 7 enters the central hole 15 of the positioning piece 2, and then the guide needle 7 is driven into the positioning piece 2 by electric power, so that one end of the guide needle 7 enters the tibia along the central hole 15 of the positioning piece 2 towards the positioning hook 10 of the aiming arm 3 until one end of the guide needle 7 contacts with the bottom of the tibial plateau at the collapse position of the patient, and the positioning of the guide needle 7 is completed. After 7 location of guide pin accomplished, anticlockwise rotation regulation head 6, adjust head 6 and rotate the back and drive setting element 2 synchronous emergence anticlockwise rotation, and the antiskid tooth 5 and the skeleton of setting element 2 break away from the back, can take off handheld handle 1, setting element 2 and aiming arm 3 device, and guide pin 7 still stays on the skeleton.

Because the reset rod 8 is provided with the guide hole 16 along the axial direction in a penetrating way, the reset rod 8 is sleeved on the guide needle 7 by one end of the guide needle 7 through the port on the end head of the reset rod 8 in the shape of a round taper, one end of the reset rod 8 in a circular conical head shape is pricked into the bone by applying pressure from the outside, and moves along the axial direction of the guide needle 7 through the guide hole 16, a doctor observes the collapse part by naked eyes, and properly changes the magnitude of the applied external force to ensure that one end of the restoring rod 8 in a circular cone shape accurately restores the skeleton at the collapse position of the tibial plateau, thus effectively saving the treatment time, increasing the accuracy of the bone restoration at the tibial platform collapse part, withdrawing the restoration rod after the bone restoration at the tibial platform collapse part is completed, bone is implanted in the bone canal left by the reduction rod 8, and then the bone is fixed in the row, namely, the bone reduction treatment at the place where the tibial plateau is collapsed is completed;

in the operation of the accurate positioning and resetting device for the tibial plateau collapse fracture, the positioning hook 10 on the aiming arm 3 is used for positioning the tibial plateau collapse part of a patient, a large incision open surgery resetting mode is not needed, the pain of the patient is relieved, and the problem of fracture damage is solved; the aiming arm 3 and the positioning piece 2 can be adjusted in position on the handheld handle 1, so that the aiming arm 3 and the positioning piece 2 are more flexibly matched with each other, have larger use space and are wider in crowd adaptation range; the fixing of the positioning piece 2 can be realized through the anti-skidding teeth 5 on the positioning piece 2, so that the accidental sliding in the operation process is prevented; the centre bore 15 through setting element 2 and the locating hook 10 on aiming arm 3 free end enable the articular surface bottom that the accurate location of guide needle 7 sinks, remove along guide needle 7 through restoring to the throne stick 8, realize restoring to the throne stick 8 and carry out accurate the reseing to the articular surface that sinks, effectively reduce operation time simultaneously.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An accurate positioning and resetting device for tibial plateau collapsed fracture, which consists of a handheld handle (1), a positioning piece (2), an aiming arm (3), a guide needle (7) and a resetting rod (8); the method is characterized in that: one end of the hand-held handle (1) is provided with an assembly positioning hole (4), and a positioning piece (2) is arranged in the assembly positioning hole (4) through internal threads; a center hole (15) is arranged in the positioning piece (2) in a penetrating way along the axial direction of the positioning piece, and a guide needle (7) is movably arranged in the center hole (15) of the positioning piece (2) in a penetrating way in the axial direction; the other end of the hand-held handle (1) is provided with an assembly sliding groove (9), a positioning screw rod (13) is fixedly arranged at the central position of the bottom surface of the assembly sliding groove (9), and the aiming arm (3) is slidably arranged on the positioning screw rod (13) through a limiting nut (14); the guide needle (7) can be sleeved with a reset rod (8) along the axial direction.

2. The precise positioning and resetting device for the tibial plateau collapsed fracture according to claim 1, wherein the assembling positioning hole (4) is axially arranged on the handheld handle (1) in a Y-axis manner, and an internal thread is arranged on the inner wall of the assembling positioning hole (4).

3. The precise positioning and resetting device for the tibial plateau collapsed fracture according to claim 1, wherein the assembling sliding groove (9) is in an arc shape, and the assembling sliding groove (9) is axially arranged on the handheld handle (1) in an X-axis direction.

4. The precise positioning and resetting device for the tibial plateau collapsed fracture according to claim 1, wherein the hand-held handle (1) is in an arc shape.

5. The precise positioning and resetting device for the tibial plateau collapsed fracture according to claim 1, wherein the aiming arm (3) comprises a fixed end connected with the handheld handle (1) and a free end far away from the handheld handle (1), the aiming arm (3) is in a 7 shape, a positioning hook (10) is arranged at the end part of the free end far away from the handheld handle (1), the fixed end connected with the handheld handle (1) is in fit sliding connection with the assembling chute (9), a limiting groove (12) is arranged at the fixed end connected with the handheld handle (1), and the limiting groove (12) is in sliding connection with the positioning screw (13).

6. The accurate positioning and resetting device for the tibial plateau collapsed fracture according to claim 1, characterized in that the positioning element (2) is cylindrical, the anti-skid teeth (5) are arranged on one end of the positioning element (2), the adjusting head (6) is fixedly arranged on the other end of the positioning element (2), a through hole is axially arranged on the adjusting head (6) along the positioning element (2), the through hole is communicated with a central hole (15) of the positioning element (2), and an external thread (11) is arranged on the external circle of the positioning element (2).

7. The precise positioning and resetting device for the tibial plateau collapsed fracture according to claim 1, wherein one end of the resetting rod (8) is in a circular conical shape, the resetting rod (8) is provided with a guide hole (16) in an axial direction in a penetrating manner, and the guide hole (16) is inserted with the guide needle (7) in a matching manner.