CN219021384U

CN219021384U - Pelvis tumor Kirschner wire cuts bone baffle

Info

Publication number: CN219021384U
Application number: CN202223029677.7U
Authority: CN
Inventors: 邱健; 纪娟; 杨延超; 陈华磊; 王远
Original assignee: Shaanxi Ruiyi Medical Technology Co ltd
Current assignee: Shaanxi Ruiyi Medical Technology Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-05-16
Anticipated expiration: 2032-11-14

Abstract

The utility model discloses a Kirschner wire osteotomy guide plate for pelvic bone tumor, and belongs to the technical field of medical appliances. The osteotomy guide plate includes: a guide plate body; the baffle body includes: the device comprises at least one Kirschner wire needle insertion block and a bone-sticking surface, wherein the Kirschner wire needle insertion block is provided with a plurality of Kirschner wire needle insertion channels for inserting Kirschner wires for positioning the pelvis position; one side surface of the bone pasting surface is adapted to the bone surface of the pelvis position to be pasted and is used for positioning the bone cutting guide plate at the pelvis position; a plurality of connecting columns are connected between the Kirschner wire needle inserting block and the other side surface of the bone-adhering surface and used for reinforcing the integral rigidity of the Kirschner wire needle inserting block and the bone-adhering surface. The kirschner wire is inserted into the kirschner wire needle insertion channel, the operation is intercepted based on a metal fence constructed by the kirschner wire, the displacement of a guide plate in use is reduced, and the whole rigidity of the kirschner wire needle insertion block and the bone-attaching surface is enhanced by connecting a plurality of connecting columns between the kirschner wire needle insertion block and the bone-attaching surface, so that the structural stability of the kirschner wire needle insertion block and the bone-attaching surface is ensured, and deformation is avoided.

Description

Pelvis tumor Kirschner wire cuts bone baffle

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a Kirschner wire osteotomy guide plate for pelvic bone tumor.

Background

The pelvis bone is irregular bone, and the bony anatomy is more; pelvic bone tumors are classified as type i according to the involvement of various pelvic bony structures: ilium bone; type II: acetabulum; type III: a closed cell region; type IV: a sacrum. Refractory pelvic tumors are a good indication of osteotomy guides due to the highly personalized shape and location. The personalized osteotomy guide plate can guide an operator to perform osteotomy according to a preoperative plan in the operation, accurately and rapidly cut off tumor entities, and can avoid damaging surrounding normal tissue structures to the greatest extent. The materials of the osteotomy guide plate are usually resin, and are limited by the manufacturing materials, the osteotomy guide plate is often not a rigid structure, and the deformation of the intraoperative guide plate can directly influence the accuracy of the operation result. In addition, the placement position of the preoperative plan often lacks a clear unique osseous sign, and the instability of the position of the osteotomy guide plate in the operation can lead to the deviation of the direction of the osteotomy position from the optimal spatial position in the plan, so that surgical errors are caused, and the patient cannot obtain the ideal postoperative effect in the preoperative plan.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a Kirschner wire osteotomy guide plate for pelvic bone tumor. The osteotomy guide plate includes: a guide plate body;

the guide plate body includes: the device comprises at least one Kirschner wire needle insertion block and a bone-sticking surface, wherein the Kirschner wire needle insertion block is provided with a plurality of Kirschner wire needle insertion channels for inserting Kirschner wires for positioning the pelvis position;

one side surface of the bone pasting surface is adapted to the bone surface of the pelvis position to be pasted and is used for positioning the bone cutting guide plate at the pelvis position;

a plurality of connecting columns are connected between the Kirschner wire needle inserting block and the other side surface of the bone-adhering surface and used for reinforcing the integral rigidity of the Kirschner wire needle inserting block and the bone-adhering surface.

Further, the cross section of the Kirschner wire needle insertion block is in a round rectangle shape, and the whole body is an arc block attached to the sacrum.

Further, the whole length of the kirschner wire needle feeding block is 17-20 mm, and the width is 12-15 mm.

Further, the connecting column is a cylinder with the radius of 4-5 mm.

Further, the k-wire needle insertion channels are spaced at a distance of 2mm.

Further, the connecting columns are uniformly distributed on the kirschner wire needle inserting block.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that: in the present utility model, the guide plate body includes: at least one kirschner wire needle block and a bone pasting surface, a plurality of kirschner wire needle inlet channels are formed in the kirschner wire needle block, the kirschner wires are inserted into the kirschner wire needle inlet channels, the operation is performed based on a metal fence constructed by the kirschner wires to intercept, the displacement of a guide plate in use is reduced, and the whole rigidity of the kirschner wire needle block and the bone pasting surface is enhanced by connecting a plurality of connecting columns between the kirschner wire needle block and the bone pasting surface, so that the structure is ensured to be stable and avoid deformation. In addition, the bone cutting guide plate of the pelvic bone tumor Kirschner wire provided by the utility model can facilitate an operator to cut bones according to the operation scheme planning in operation, realize personalized treatment of each patient, accurately and rapidly cut off tumor entities, avoid damaging surrounding normal tissue structures to the greatest extent, improve the operation precision, reduce the operation time, design customized prosthesis according to the section of the bone cutting guide plate and facilitate the recovery of postoperative patients.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a bone cutting guide plate of a Kirschner wire for treating pelvic bone tumor;

FIG. 2 is a schematic diagram of a bone cutting guide plate of a Kirschner wire for treating pelvic bone tumor;

FIG. 3 is a schematic view of an osteotomy guide plate construction in accordance with the present utility model;

FIG. 4 is a schematic view of an acetabular osteotomy guide plate construction according to the present utility model;

FIG. 5 is a schematic view of a construction of a pubic osteotomy guide plate provided by the present utility model;

fig. 6 is a schematic view of the construction of a ischial osteotomy guide plate according to the present utility model.

Reference numerals: 1-a guide plate body; 2-Kirschner wire needle insertion block; 3-attaching a bone surface; 4-connecting columns; the 5-k shi needle enters the needle channel.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-2, the present utility model provides a pelvic bone tumor k-wire osteotomy guide, comprising: baffle body 1, baffle body 1 includes: the cross section of the Kirschner wire needle block 2 is in a round angle rectangular shape, the whole body of the Kirschner wire needle block 2 is an arc block for fitting the sacrum, the whole length of the Kirschner wire needle block 2 is 17-20 mm, the width of the Kirschner wire needle block 2 is 12-15 mm, a plurality of Kirschner wire needle inlet channels 5 are formed in the Kirschner wire needle block 2, the intervals of the Kirschner wire needle inlet channels 5 are 2mm, and the Kirschner wire needle inlet channels 5 are used for inserting Kirschner wires for positioning the pelvis; one side surface of the bone-attaching surface 3 is adapted to the bone surface of the pelvis position to be attached, a plurality of connecting columns 4 are connected between the Kirschner wire needle-inserting block 2 and the other side surface of the bone-attaching surface 3, the connecting columns 4 are cylinders with the radius of 4-5 mm, the connecting columns 4 are uniformly distributed on the Kirschner wire needle-inserting block 2, and the connecting columns 4 are used for reinforcing the integral rigidity of the Kirschner wire needle-inserting block 2 and the bone-attaching surface 3.

The construction method of the Kirschner wire osteotomy guide plate for pelvic bone tumor of the utility model comprises the following steps: acquiring patient CT data, reconstructing the patient CT data through software to obtain a three-dimensional model of the pelvic bone of the patient, determining an osteotomy plane at a position 10mm outside the bone tumor, wherein the osteotomy plane penetrates through ilium near the whole tangential plane of the sacrum side of the sacroiliac joint, the three-dimensional model of the pelvic bone can generally comprise ilium, acetabulum, ischium, pubic bone, sacrum and other parts, tissues such as pelvic tumor and the like, and a method for constructing the three-dimensional model of the pelvic bone is known to a person skilled in the art, for example, the three-dimensional model of the pelvic bone can be constructed through CT and MRI imaging data of the patient by using three-dimensional reconstruction software (for example, medraw Print, mimics).

Extending along the iliac crest to the posterior superior iliac spine and including a portion of the lateral iliac surface to construct a bone-contacting surface; the Kirschner wire needle block is constructed by being higher than the bone-sticking surface and is influenced by factors such as muscles around buttocks, so that the Kirschner wire needle block needs to be integrally higher than the bone-sticking surface so as to smoothly insert the needle, the Kirschner wire needle block is integrally an arc block which is attached to the sacrum, the radian of the Kirschner wire needle block is changed by combining different parts, basically depends on the position of the bone-cutting surface, and the arc block corners are chamfered for avoiding sharp corners; constructing a Kirschner wire model according to the bone-cutting surface, wherein the Kirschner wire models are distributed on the bone-cutting surface at intervals of 2mm, and a Kirschner wire needle insertion channel is constructed according to the Kirschner wire model, wherein the Kirschner wire needle insertion channel can be selected according to the specific requirements of a clinician, and the Kirschner wire needle insertion channel is specifically based on the diameter of a Kirschner wire for the doctor to operate; and constructing a connecting column on the bone-adhering surface and the Kirschner wire needle-inserting block, enhancing the integral rigidity of the arc block and the bone-adhering surface, obtaining a pelvis bone tumor Kirschner wire bone-cutting guide plate model, guiding out a pelvis bone tumor Kirschner wire bone-cutting guide plate model format file, printing the bone-cutting guide plate by 3D printing equipment, printing the resin as a printing material, and finally sterilizing and packaging after printing.

It should be noted that the number of the connecting posts is not particularly limited, but the connecting posts are arranged at the head and the tail, are uniformly distributed and are affected by the pelvis position and the space, and particularly, the space at certain positions of the pelvis is not enough, and the kirschner wire needle insertion block is required to be directly constructed together with the bone-adhering surface. Next, the number of kirschner wires inserting needle blocks 2 is determined according to the number of positions of the osteotomies required, and if the number of positions of the osteotomies is one, one kirschner wire inserting needle block is required, as shown in fig. 3, and if the number of positions of the osteotomies is two, two kirschner wires inserting needle blocks are required, as shown in fig. 4 to 6.

The application method of the Kirschner wire osteotomy guide plate for pelvic bone tumor can be as follows: the doctor peels the periosteum at the corresponding pelvis position of the patient to expose the bones at the corresponding positions, the corresponding bone-adhering surface is used for adhering the corresponding pelvis regions, namely, the two are anastomosed, the Kirschner wire is inserted into the Kirschner wire channel above the Kirschner wire needle insertion block after anastomosis, and the position of the corresponding Kirschner wire inserted into the pelvis is found, namely, the corresponding bone-cutting surface, namely, the boundary position of the doctor to be resected in the operation.

It should be noted that, in the present utility model, the guide plate body includes: the Kirschner wire needle block and the bone-sticking surface are provided with a plurality of Kirschner wire needle inlet channels, the Kirschner wire is inserted into the Kirschner wire needle inlet channels, the operation is intercepted based on a metal fence constructed by the Kirschner wire, the displacement of a guide plate in use is reduced, and the integral rigidity of the Kirschner wire needle block and the bone-sticking surface is enhanced by connecting a plurality of connecting columns between the Kirschner wire needle inlet block and the bone-sticking surface, so that the structural stability of the Kirschner wire needle is ensured, and deformation is avoided. In addition, the bone cutting guide plate of the pelvic bone tumor Kirschner wire provided by the utility model can facilitate an operator to cut bones according to the operation scheme planning in operation, realize personalized treatment of each patient, accurately and rapidly cut off tumor entities, avoid damaging surrounding normal tissue structures to the greatest extent, improve the operation precision, reduce the operation time, design customized prosthesis according to the section of the bone cutting guide plate and facilitate the recovery of postoperative patients.

The foregoing embodiment numbers of the present utility model are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. A pelvic bone tumor kirschner wire osteotomy guide, the osteotomy guide comprising: a guide plate body (1);

the guide plate body (1) includes: the device comprises at least one Kirschner wire needle insertion block (2) and a bone sticking surface (3), wherein a plurality of Kirschner wire needle insertion channels (5) are formed in the Kirschner wire needle insertion block (2) and are used for inserting Kirschner wires for positioning the pelvis;

one side surface of the bone pasting surface (3) is adapted to the bone surface of the pelvis position to be pasted and is used for positioning the bone cutting guide plate at the pelvis position;

a plurality of connecting columns (4) are connected between the kirschner wire needle inserting block (2) and the other side face of the bone pasting surface (3) and are used for reinforcing the integral rigidity of the kirschner wire needle inserting block (2) and the bone pasting surface (3).

2. The pelvis bone tumor kirschner wire osteotomy guide plate of claim 1, wherein the cross section of the kirschner wire insertion block (2) is in a round rectangular shape, and the whole body is an arc block which is attached to the sacrum.

3. The kirschner wire osteotomy guide plate for pelvic bone tumor according to claim 2, wherein the kirschner wire insertion block (2) has an overall length of 17-20 mm and a width of 12-15 mm.

4. The pelvis bone tumor kirschner wire osteotomy guide plate of claim 1, wherein the connecting column (4) is a cylinder with a radius of 4-5 mm.

5. A pelvic bone tumor kirschner wire osteotomy guide according to claim 1, wherein the kirschner wire needle insertion channels (5) are spaced apart by 2mm.

6. A pelvic bone tumor kirschner wire osteotomy guide plate according to claim 1, wherein said connecting posts (4) are evenly distributed over said kirschner wire insertion block (2).