CN211066963U

CN211066963U - 3D prints external template that resets of fracture

Info

Publication number: CN211066963U
Application number: CN201921866144.XU
Authority: CN
Inventors: 李国梁
Original assignee: HEBEI PROVINCE CANGZHOU HOSPITAL OF INTEGRATED TRADITIONAL AND WESTERN MEDICINE
Current assignee: HEBEI PROVINCE CANGZHOU HOSPITAL OF INTEGRATED TRADITIONAL AND WESTERN MEDICINE
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-07-24
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses a 3D printing fracture in-vitro reduction template, which comprises a reduction template and positioning steel needles respectively positioned at two sides of a fracture part; have on the template that resets with the fracture department skin profile looks adaptation after locating steel needle matched with locating hole and the template that resets and the fracture resets, the locating steel needle is worn the bone simultaneously and is just when the template that resets pastes the outer skin of fracture department, and the near-end is replied to normal butt position far away in the fracture, the utility model discloses an it resets to put into the location steel needle in advance then realized the wicresoft of four limbs long bone fracture through the mode of the template that resets at the external definite location steel needle operating position of patient, only need squeeze into the location steel needle then according to the fracture department skin profile preparation adaptation after the fracture resets the reset template and equipment can, need not to cut again and reset or see-through closed fracture broken end that resets down, not only made things convenient for doctor's treatment and also alleviateed patient's misery.

Description

3D prints external template that resets of fracture

Technical Field

The utility model relates to a fracture resets and uses the medical instrument field, concretely relates to 3D prints external template that resets of fracture.

Background

When the fracture is treated by the operation, the fracture end needs to be butted and reset, a steel needle is driven into the fracture end after the butt joint reset, the fracture end is fixed by an external fixing frame or directly arranged in a steel plate for the fracture fixation, the butt joint reset fixing means of the fracture end comprises an incision direct-vision reset means and a perspective closed reset means, however, the incision direct-vision reset means needs to incise the skin of a patient, extra trauma is brought to the patient, the postoperative recovery time is longer, the perspective closed reset means has smaller trauma, but needs to pay attention to perspective images in the operation process, requires the attention of doctors to be highly concentrated, suffers from ray damage, causes great mental pressure and physical burden to the doctors, is not beneficial to maintaining the embedding precision of the steel plate or the steel needle, if the reset of the fracture end can be realized by an external reset template, so that the doctors can accurately butt the fracture end outside the body of the patient, therefore, the treatment of doctors is more convenient, and the operation wound of the patient is effectively reduced, thereby achieving two purposes at one stroke.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the background art, the utility model aims to provide a 3D prints external template that resets of fracture, it has effectively solved the problem existing in the background art.

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

A3D printing fracture in-vitro reduction template comprises a reduction template and positioning steel needles respectively positioned at two sides of a fracture part; the reduction template is provided with a positioning hole matched with the positioning steel needle, the shape of the inner surface of the reduction template is matched with the outer skin contour of the fracture part after the fracture reduction, and when the positioning steel needle simultaneously penetrates into the bone and the positioning hole and the reduction template is matched and tightly attached to the outer skin of the fracture part, the far end and the near end of the fracture are restored to the normal butt joint position.

Further, the reset template is manufactured by 3D printing.

Furthermore, the reset template comprises at least two reset modules, and adjacent reset modules are detachably connected together through a quick-release structure.

Furthermore, the rapid disassembly structure sets firmly a plurality of groups of mount pads on adjacent module that resets including corresponding, wear to be equipped with the connecting rod on the mount pad, connecting rod interference grafting or spiro union are on the mount pad.

Furthermore, the number of the positioning steel needles is at least two.

Furthermore, two ends of the positioning steel needle are detachably fixed on an external fixing frame respectively, a fixing hole matched with the positioning steel needle is formed in the external fixing frame, a clamping screw is screwed in the fixing hole, and the end part of the clamping screw is clamped against the positioning steel needle.

The utility model discloses following beneficial technological effect has:

the utility model discloses a put into location steel needle in advance then realized the wicresoft that the fracture resets through the mode of template that resets of confirming location steel needle operating position outside the patient's body, only need squeeze into location steel needle then according to the fracture department skin profile after the fracture resets the template and assemble can that resets, need not to cut again and resets or see through closed fracture broken end that resets down, the treatment that has not only made things convenient for the doctor has also alleviateed patient's misery, has very strong practicality.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of the embodiment of the present invention before reduction of the fractured end;

fig. 3 is a schematic structural view of the fractured end of the utility model after reduction.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, the 3D printed external reduction template for fracture according to the embodiment includes an external fixation frame 1, a reduction template 2, and at least two positioning steel pins 3, which may be kirschner pins, respectively located at two sides of a fracture site; the external fixing frame 1 comprises two circular rings 4 and a plurality of support rods 5 arranged between the two circular rings 4, two ends of each support rod 5 are fixed with the circular rings 4 through nuts respectively, the reset template 2 is provided with a positioning hole 6 matched with the positioning steel needle 3, the inner surface shape of the reset template 2 is matched with the contour of the outer skin 10 of a fracture part after fracture reset, when the positioning steel needle 3 penetrates into a bone and the positioning hole 6 simultaneously and the reset template 2 is matched and tightly attached to the outer skin 10 of the fracture part, the far and near end of a fracture is restored to a normal butt joint position, two ends of the positioning steel needle 3 are detachably fixed on the external fixing frame 1 respectively, specifically, the support rods 5 are provided with fixing holes matched with the positioning steel needles 3, abutting screws 7 are screwed in the fixing holes, and the end parts of the abutting screws 7 abut against the end parts of the positioning steel needles 3.

Template 2 resets is made for 3D printing, preferred material is resin or nylon, template 2 resets includes two at least modules 8 that reset, link together through rapid disassembly structure detachable between the adjacent module 8 that resets, rapid disassembly structure sets firmly a plurality of groups mount pad 9 on adjacent module 8 that resets including the correspondence, mount pad 9 and module 8 body coupling that resets, print simultaneously, wear to be equipped with connecting rod 10 on the mount pad 9, connecting rod 10 interference is pegged graft or the spiro union is on mount pad 9.

The working principle of the embodiment is as follows:

firstly, positioning steel needles 3 are penetrated on broken bones at two sides of a long bone, then affected parts are scanned by perspective imaging means such as CT and the like to obtain data, the affected part image data and the positioning steel needles 3 are displayed on a computer, a fracture end of the fracture is reduced through fracture rapid virtual reduction software (Mimics, Edit in 3D and the like) based on three-dimensional editing to form a three-dimensional graph after the reduction of the fracture end, each reduction module 8 which is attached to the outline of the skin 10 outside the fracture part is printed according to the graph 3D, the positions of positioning holes 6 on each reduction module 8 are also printed according to the positions of the positioning steel needles 3 on the three-dimensional graph after the reduction, after the printing is finished, each reduction module 8 forms a reduction template 2 at the fracture part of a patient and ensures that the positioning steel needles 3 penetrate through the corresponding positioning holes 6, at the moment, the fracture end is returned to a normal butt joint position, and after the limitation of all the positioning steel needles, the fracture broken ends on two sides are aligned, then the external fixing frame 1 is assembled on the outer side of the reduction template 2, and the external fixing frame 1 and the positioning steel needle 3 are fixedly connected, so that the butt joint reduction fixing process of the long bone fracture is completed, only the positioning steel needle 3 needs to be driven in the whole process, no other operation means causing wound to a patient exists, and the fracture broken ends of the reduction fracture do not need to be closed under incision reduction or perspective, so that the treatment of a doctor is facilitated, the pain of the patient is relieved, two purposes are achieved, the treatment method is particularly suitable for the treatment of the long bone fracture of four limbs, of course, after the process is completed, the skin near an affected part can be cut through a minimally invasive mode to insert the broken bone connecting steel plate so as to further ensure the treatment effect, due to the fact that the reduction template 2 and the positioning steel needle 3 are positioned in advance, when the connecting steel plate is inserted again, the insertion precision is very simple, and the, is beneficial to the postoperative recovery of the patient.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A3D printing fracture in-vitro reduction template is characterized by comprising a reduction template and positioning steel needles respectively positioned at two sides of a fracture part; the reduction template is provided with a positioning hole matched with the positioning steel needle, the shape of the inner surface of the reduction template is matched with the outer skin contour of the fracture part after the fracture reduction, and when the positioning steel needle simultaneously penetrates into the bone and the positioning hole and the reduction template is matched and tightly attached to the outer skin of the fracture part, the far end and the near end of the fracture are restored to the normal butt joint position.

2. The 3D printed fracture in vitro reduction template of claim 1, wherein the reduction template is made by 3D printing.

3. The 3D printing fracture in-vitro reduction template according to claim 2, wherein the reduction template comprises at least two reduction modules, and adjacent reduction modules are detachably connected together through a quick-release structure.

4. The 3D printing fracture in-vitro reduction template according to claim 3, wherein the quick-release structure comprises a plurality of sets of installation bases correspondingly and fixedly arranged on adjacent reduction modules, connecting rods penetrate through the installation bases, and the connecting rods are in interference insertion connection or in threaded connection with the installation bases.

5. The 3D printed fracture in-vitro reduction template according to claim 1, wherein the number of the positioning steel needles is at least two.

6. The 3D printing external reduction template for fracture according to claim 1, wherein two ends of the positioning steel needle are detachably fixed on an external fixing frame respectively, the external fixing frame is provided with a fixing hole matched with the positioning steel needle, a tightening screw is screwed in the fixing hole, and the end part of the tightening screw is tightened against the positioning steel needle.