CN110755191A

CN110755191A - External fixator for orthopedic joint

Info

Publication number: CN110755191A
Application number: CN201911150068.7A
Authority: CN
Inventors: 刘磊
Original assignee: Xuzhou Medical University
Current assignee: Xuzhou Medical University
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-02-07

Abstract

The invention relates to the technical field of medical instruments and discloses an external fixator for an orthopedic joint, which comprises a lower half body of the fixator, wherein the upper surface of the lower half body of the fixator is fixedly connected with a group of limiting sleeves, extension rods are sleeved in the limiting sleeves, the top ends of the extension rods penetrate through and extend to the outside of the limiting sleeves, limiting pistons are movably connected in the limiting sleeves, and the bottom ends of the extension rods are fixedly connected with the upper surfaces of the limiting pistons. This external fixator of orthopedics joint through setting up half body under half body on the fixer and the fixer, pulls two fixer half bodies and keeps away from each other manually, stretches out spacing sleeve along with the extension rod, then embolias injured joint position, and under reset spring's elasticity effect, two fixer half bodies are close to each other again, have realized from this that can use the joint department of equidimension not, for example shank joint and arm joint all can use, have consequently improved application range.

Description

External fixator for orthopedic joint

Technical Field

The invention relates to the technical field of medical instruments, in particular to an external fixator for an orthopedic joint.

Background

Orthopedics is one of the most common departments in all hospitals, and mainly studies the anatomy, physiology and pathology of the skeletal muscle system, and maintains and develops the normal form and function of the system by using medicines, operations and physical methods. With the change of times and society, the orthopedic injury spectrum has obvious changes, for example, diseases such as osteoarticular tuberculosis, osteomyelitis, poliomyelitis and the like are obviously reduced, and the injuries caused by traffic accidents are obviously increased.

When a patient with an injured joint is treated in the orthopedics department, the position of the injured joint of the patient needs to be fixed, so that the joint injury can be effectively prevented from moving and bouncing, and the patient can be helped to recover the health early; however, the size of the current joint fixator cannot be adjusted, so that the current joint fixator has certain limitation when being used in places with different arm or leg joint thicknesses, and the traditional fixator is complex in structure and poor in fixing effect.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an external fixator for an orthopedic joint, which has the advantages of capability of being used for joints with different sizes, simple structure, good fixing effect and the like, and solves the problems that the size of the conventional joint fixator cannot be adjusted, certain limitation is caused when the conventional joint fixator is used for the joints with different thicknesses of arms or legs, the structure of the conventional fixator is complex, and the fixing effect is poor.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: an external fixator for an orthopedic joint comprises a lower fixator half body, wherein a group of limiting sleeves are fixedly connected to the upper surface of the lower fixator half body, extension rods are sleeved inside the limiting sleeves, the top ends of the extension rods penetrate through and extend to the outside of the limiting sleeves, limiting pistons are movably connected inside the limiting sleeves, the bottom ends of the extension rods are fixedly connected with the upper surfaces of the limiting pistons, return springs are sleeved on the outer surfaces of the extension rods and the limiting sleeves, the top ends of the extension rods are fixedly connected with an upper fixator half body, adjusting sleeves are arranged inside the upper fixator half body in an inserting mode, adjusting rods are sleeved inside the adjusting sleeves, knobs are fixedly connected to the top ends of the adjusting sleeves, first clamping plates are fixedly connected to the bottom ends of the adjusting rods, and two limiting telescopic rods are hinged to the inner surface of the lower fixator half body through clamping shafts, the bottom ends of the two limiting telescopic rods are hinged to the upper surface of the first clamping plate, the inner surface of the lower half body of the fixator is fixedly connected with two supporting rods, and the top ends of the two supporting rods are fixedly connected with a second clamping plate.

Preferably, the outer surface of the upper half body of the fixer is fixedly connected with a fixing ring, and a binding band is wound inside the fixing ring.

Preferably, the inner surface of the upper half body of the fixator is fixedly connected with an installation block, corresponding through holes are formed in the installation block and the upper half body of the fixator respectively, the adjusting sleeve penetrates through the through holes, a limiting bearing is fixedly connected inside the installation block, and an inner ring of the limiting bearing is fixedly connected with the outer surface of the adjusting sleeve.

Preferably, one end of the return spring is fixedly connected with the top end of the extension rod, and the other end of the return spring is fixedly connected with the bottom end of the limiting sleeve.

Preferably, the inner surface of the adjusting sleeve is provided with a thread groove, the outer surface of the adjusting rod is provided with thread teeth, and the adjusting sleeve is in threaded connection with the adjusting rod.

Preferably, the number of the limiting sleeves in one group is four, the limiting sleeves are distributed on the upper surface of the lower half body of the fixator in a rectangular mode, and the lower half body of the fixator and the upper half body of the fixator are semicircular sleeves.

(III) advantageous effects

Compared with the prior art, the invention provides an external fixator for an orthopedic joint, which has the following beneficial effects:

(1) this external fixator of orthopedics joint through setting up half body under half body on the fixer and the fixer, pulls two fixer half bodies and keeps away from each other manually, stretches out spacing sleeve along with the extension rod, then embolias injured joint position, and under reset spring's elasticity effect, two fixer half bodies are close to each other again, have realized from this that can use the joint department of equidimension not, for example shank joint and arm joint all can use, have consequently improved application range.

(2) This articular external fixation ware of orthopedics, through setting up the second splint, be located articular one side with the second splint, then rotate the knob and drive adjusting sleeve and rotate, under adjusting sleeve pivoted condition, owing to set up adjusting sleeve and regulation pole threaded connection, and under the limiting displacement of spacing telescopic link, adjusting sleeve rotates and drives the regulation pole and move down, it drives first splint and move down to adjust the pole and move down, until pressing close to the opposite side of joint, use with the cooperation of second splint down, it is fixed with joint department, the device structure is comparatively simple, and can fix joint department through rotating the knob, high durability and convenient use, and it is effectual to fix.

Drawings

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

FIG. 2 is an enlarged view of the structure A of FIG. 1 according to the present invention;

FIG. 3 is a schematic side view of the present invention.

In the figure: the device comprises a lower fixer half body 1, a limiting sleeve 2, an extension rod 3, a limiting piston 4, a return spring 5, an upper fixer half body 6, an adjusting sleeve 7, an adjusting rod 8, a knob 9, a first clamping plate 10, a limiting telescopic rod 11, a supporting rod 12, a second clamping plate 13, a fixing ring 14, a binding band 15, a mounting block 16, a through hole 17 and a limiting bearing 18.

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. 1-3, an external fixator for orthopedic joints comprises a lower fixator half body 1, a set of limiting sleeves 2 is fixedly connected to the upper surface of the lower fixator half body 1, an extension rod 3 is sleeved inside the limiting sleeves 2, the top end of the extension rod 3 penetrates through and extends to the outside of the limiting sleeves 2, limiting pistons 4 are movably connected inside the limiting sleeves 2, the bottom end of the extension rod 3 is fixedly connected with the upper surface of the limiting pistons 4, a return spring 5 is sleeved outside the extension rod 3 and the limiting sleeves 2, the top end of the extension rod 3 is fixedly connected with an upper fixator half body 6, an adjusting sleeve 7 is inserted inside the upper fixator half body 6, an adjusting rod 8 is sleeved inside the adjusting sleeve 7, a knob 9 is fixedly connected to the top end of the adjusting sleeve 7, a first clamping plate 10 is fixedly connected to the bottom end of the adjusting rod 8, and two limiting telescopic rods 11 are hinged to the inner surface of the lower fixator half body 1 through clamping shafts, the bottom ends of the two limiting telescopic rods 11 are hinged to the upper surface of the first clamping plate 10, the inner surface of the lower half body 1 of the fixator is fixedly connected with two supporting rods 12, and the top ends of the two supporting rods 12 are fixedly connected with a second clamping plate 13.

Preferably, the outer surface of the upper half body 6 of the fixator is fixedly connected with a fixing ring 14, a binding band 15 is wound inside the fixing ring 14, the binding band 15 can be wound on the arm or the leg by arranging the binding band 15, so that the two half bodies of the fixator are more stable at the joint and cannot easily fall off, the binding band 15 can be wound on the neck, when the fixator is used for the joint of the arm, the force born by the arm is reduced, and the comfort of a patient is improved.

Preferably, the inner surface of the upper half body 6 of the fixator is fixedly connected with a mounting block 16, corresponding through holes 17 are formed in the mounting block 16 and the inner part of the upper half body 6 of the fixator, the adjusting sleeve 7 penetrates through the through holes 17, a limiting bearing 18 is fixedly connected to the inner part of the mounting block 16, an inner ring of the limiting bearing 18 is fixedly connected with the outer surface of the adjusting sleeve 7, and the adjusting sleeve 7 can be rotated while the limiting bearing 18 is arranged to limit the adjusting sleeve 7.

Preferably, reset spring 5's one end and extension rod 3's top fixed connection, reset spring 5's the other end and the bottom fixed connection of spacing sleeve 2, reset spring 5 along with extension rod 3 stretch out and take place deformation and then produce elasticity.

Preferably, the inner surface of the adjusting sleeve 7 is provided with a thread groove, the outer surface of the adjusting rod 8 is provided with a thread tooth, and the adjusting sleeve 7 is in threaded connection with the adjusting rod 8.

Preferably, the number of the limiting sleeves 2 is four, and the limiting sleeves are distributed on the upper surface of the lower half body 1 of the fixator in a rectangular shape, and the lower half body 1 of the fixator and the upper half body 6 of the fixator are semicircular sleeves.

To sum up, the external fixator for the orthopedic joint is provided with the upper fixator half body 6 and the lower fixator half body 1, the two fixator half bodies are pulled manually to be away from each other, the extension rod 3 extends out of the limiting sleeve 2 and then is sleeved in an injured joint part, and the two fixator half bodies are close to each other under the elastic force action of the reset spring 5, so that the external fixator for the orthopedic joint can be used for joints with different sizes, such as leg joints and arm joints, and the application range is widened.

This articular external fixation ware of orthopedics, through setting up second splint 13, be located second splint 13 in articular one side, then rotate knob 9 and drive adjusting sleeve 7 and rotate, under the 7 pivoted circumstances of adjusting sleeve, owing to set up adjusting sleeve 7 and adjust 8 threaded connection of pole, and under the limiting displacement of spacing telescopic link 11, adjusting sleeve 7 rotates and drives and adjust 8 downstream of pole, it drives first splint 10 downstream to adjust 8 downstream of pole, until pressing close to the opposite side of joint, use with second splint 13's cooperation down, it is fixed with joint department, this device structure is comparatively simple, and can fix joint department through rotating knob 9, high durability and convenient use, and fixed effectual.

It is to be noted that 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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. An external fixator for orthopedic joints, comprising a lower fixator half body (1), characterized in that: the upper surface of the lower half body (1) of the fixer is fixedly connected with a group of limiting sleeves (2), an extension rod (3) is sleeved inside each limiting sleeve (2), the top end of each extension rod (3) penetrates through and extends to the outside of each limiting sleeve (2), a limiting piston (4) is movably connected inside each limiting sleeve (2), the bottom end of each extension rod (3) is fixedly connected with the upper surface of each limiting piston (4), a reset spring (5) is sleeved on the outer surfaces of each extension rod (3) and each limiting sleeve (2), the top end of each extension rod (3) is fixedly connected with an upper half body (6) of the fixer, an adjusting sleeve (7) is arranged inside each upper half body (6) of the fixer in an inserting mode, an adjusting rod (8) is sleeved inside each adjusting sleeve (7), and a knob (9) is fixedly connected to the top end of each adjusting sleeve (7), the bottom end of the adjusting rod (8) is fixedly connected with a first clamping plate (10), the inner surface of the lower fixer half body (1) is hinged with two limiting telescopic rods (11) through clamping shafts, the bottom ends of the two limiting telescopic rods (11) are hinged with the upper surface of the first clamping plate (10), the inner surface of the lower fixer half body (1) is fixedly connected with two supporting rods (12), and the top ends of the two supporting rods (12) are fixedly connected with a second clamping plate (13).

2. An external fixator for an orthopedic joint according to claim 1, wherein: the outer surface of the upper half body (6) of the fixator is fixedly connected with a fixing ring (14), and a binding band (15) is wound inside the fixing ring (14).

3. An external fixator for an orthopedic joint according to claim 1, wherein: the inner surface of the upper half body (6) of the fixator is fixedly connected with an installation block (16), corresponding through holes (17) are formed in the installation block (16) and the upper half body (6) of the fixator respectively, the adjusting sleeve (7) penetrates through the through holes (17), a limiting bearing (18) is fixedly connected inside the installation block (16), and an inner ring of the limiting bearing (18) is fixedly connected with the outer surface of the adjusting sleeve (7).

4. An external fixator for an orthopedic joint according to claim 1, wherein: one end of the reset spring (5) is fixedly connected with the top end of the extension rod (3), and the other end of the reset spring (5) is fixedly connected with the bottom end of the limiting sleeve (2).

5. An external fixator for an orthopedic joint according to claim 1, wherein: the inner surface of the adjusting sleeve (7) is provided with a thread groove, the outer surface of the adjusting rod (8) is provided with thread teeth, and the adjusting sleeve (7) is in threaded connection with the adjusting rod (8).

6. An external fixator for an orthopedic joint according to claim 1, wherein: the number of the group of limiting sleeves (2) is four, the limiting sleeves are distributed on the upper surface of the lower half body (1) of the fixator in a rectangular mode, and the lower half body (1) of the fixator and the upper half body (6) of the fixator are semicircular sleeves.