CN219090889U

CN219090889U - Universal gynecological source applicator with arc needle channel

Info

Publication number: CN219090889U
Application number: CN202222870256.0U
Authority: CN
Inventors: 程光惠; 赵志鹏; 赵红福; 毛壮
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-05-30
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a general gynecological applicator with an arc needle channel, which comprises a vaginal columnar applicator and a vulva fixing template, wherein the vaginal columnar applicator is positioned in a round hole in the center of the vulva fixing template and is connected with the round hole through a buckle; arc-shaped channel planting pin holes penetrating through the bottom are respectively formed in two sides of the columned vaginal applicator, and arc-shaped channel planting pins are arranged in the arc-shaped channel planting pin holes; the top of the vaginal columnar source applying device is provided with columnar vertical pin holes which vertically penetrate through the bottom from top to bottom, the columnar vertical pin holes are mutually parallel, and the columnar vertical pin holes are arranged in the columnar vertical pin holes. The utility model solves the problems that the inclination angle of a columnar applicator is limited, the coverage area is small, the insertion of the columnar applicator into the left side and the right side can not be realized, the time and the economic cost of a specially manufactured individual applicator are large, the universality is low and the like in the prior art.

Description

Universal gynecological source applicator with arc needle channel

Technical Field

The utility model belongs to the technical field of tumor radiotherapy equipment, and relates to a universal gynecological applicator with an arc needle channel.

Background

Radiation therapy is one of the important means of tumor treatment, and can effectively control the development of cancer, or cure cancer. The near post-treatment technique is used as a branch of radiation treatment, can provide an effective treatment scheme for the gynecological tumor patients with recurrent residual ends after operation, reduces the radiation damage of normal tissues and brings higher treatment benefit. The process of the post-loading treatment is to implant an applicator or an insertion needle with a channel into a tumor, then control the post-loading treatment machine to feed the radioactive source into the channel for irradiating the tumor in a well-shielded machine room, and withdraw the radioactive source after the treatment is finished.

The most common post-treatment technology for residual cancer in the domestic treatment center at present is that a columnar vaginal applicator is combined with a parallel vulva insertion template, and for patients with tumors far from the midline of a body, especially more than 3cm, the columnar vaginal applicator is inserted directly through the parallel vulva or through an inclined passage of the columnar vaginal applicator.

The direct parallel implantation through the vulva can effectively cover the treatment part, but can cause various side effects due to the longer depth distance into normal tissues under the vulva. More pain may be caused after patient anesthesia is awakened, more bleeding is caused after the applicator is removed, and excessive number and depth of implants may even present a transfer risk.

The direct insertion through the inclined channel of the columnar applicator can reduce the insertion wound to a certain extent, but the inclination angle is limited due to the size limitation of the diameter of the bottom surface of the columnar applicator and the insertion depth of the applicator, so that the dosage coverage of tumors far from the midline of a body cannot be provided, and the insertion through the columnar applicator on the left side and the right side cannot be simultaneously invaded by residual cancer due to the mutual blocking among the insertion channels. And the special manufacturing of the applicators is needed for cases in different ranges, so that the time and the cost are increased, and the verification of the position and the repeatability and the stability of the specially designed channel have larger problems.

The utility model provides a general gynecological applicator with an arc needle channel, which aims to provide a simple and direct insertion technology with low trauma, large-scale dose coverage and wide application range.

Disclosure of Invention

In order to achieve the above purpose, the utility model provides the arc needle channel universal gynecological applicator, which solves the problems that in the prior art, the inclination angle of a columnar applicator is limited, the coverage area is small, the insertion of the columnar applicator into the left side and the right side can not be realized, the time and the economic cost of a specially manufactured individual applicator are large, the universality is low and the like.

In order to solve the technical problems, the technical scheme adopted by the utility model is that the arc needle channel universal gynecological applicator comprises a vaginal columnar applicator and a vulva fixing template, wherein the vaginal columnar applicator is positioned in a round hole at the right center of the vulva fixing template and is connected with the round hole through a buckle; arc-shaped channel planting pin holes penetrating through the bottom are respectively formed in two sides of the columned vaginal applicator, and arc-shaped channel planting pins are arranged in the arc-shaped channel planting pin holes; the top of the vaginal columnar source applying device is provided with columnar vertical pin holes which vertically penetrate through the bottom from top to bottom, the columnar vertical pin holes are mutually parallel, and the columnar vertical pin holes are arranged in the columnar vertical pin holes.

Further, protruding buckles are arranged on the inner side of the central round hole of the vulva fixing template, a strip-shaped groove is formed in the side face of the columnar vaginal applicator, and cuboid-shaped grooves which are evenly distributed are formed in one side of the inner portion of the strip-shaped groove.

Further, the columniform applicator consists of a cylinder and a hemisphere with the same diameter, wherein the bottom surface of the hemisphere coincides with the top of the cylinder.

Further, the arc-shaped channel insertion pinholes at the two sides of the columnar vaginal applicator are symmetrical along the central axis of the columnar vaginal applicator.

Further, the vulva fixed template is a round corner cube, a template inserting needle guide hole is formed in the vulva fixed template, and the template inserting needle is arranged in the template inserting needle guide hole.

Further, the arc-shaped channel insertion needle consists of a needle core and a plastic needle tube.

The beneficial effects of the utility model are as follows:

the utility model simplifies the implantation operation difficulty of the applicator for carrying the radiotherapy after the gynecological stump, reduces the operation time of the operation, improves the operation stability, is widely applicable to wide stump cases through the special design of each channel path, forms reasonable channel distribution, realizes the full dose coverage of a tumor area and controls the radiotherapy dose of normal tissues. The utility model reduces the implantation trauma, the pain bleeding and unnecessary remote transfer risks, is standardized, saves the design cost and time, plays a positive role in improving the curative effect of the stump implantation radiotherapy, saving medical resources and popularizing the close-range post-loading radiotherapy technology in China, and has good economic and social benefits.

Drawings

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

Fig. 1 is a block diagram of a vaginal columnar applicator according to an embodiment of the present utility model.

Fig. 2 is a diagram of a vulva fixing template structure according to an embodiment of the present utility model.

FIG. 3 is a schematic view of an applicator and a pin assembly according to an embodiment of the present utility model.

Fig. 4 is a schematic view of the snap-fit connection of the vaginal columnar applicator of the present utility model to the vulvar fixation template.

FIG. 5 is a three-dimensional schematic view of the path of the internal arcuate path of an applicator according to an embodiment of the present utility model.

In the figure, 1, a vaginal columnar applicator, 2, a vulva fixing template, 3, an arc-shaped channel inserting needle, 4, a columnar vertical inserting needle and 5, a template inserting needle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 5, the utility model discloses a general gynecological applicator with an arc needle channel, which comprises a colpitis applicator 1 and a vulva fixing template 2. The shape of the vaginal columnar applicator 1 consists of a cylinder with the diameter of 30mm and a top hemisphere with the bottom diameter of 30 mm. The matrix with the bottom surface origin as the center 3 multiplied by 3 is a vertical inserting needle, and the target inserting range is right above the column. The vaginal columnar source applicator 1 is used as an axis in the middle, and two sides of the vaginal columnar source applicator are respectively provided with 8 arc-shaped channel planting needle holes penetrating to the bottom, wherein the arc-shaped channel planting needle holes are used for inserting arc-shaped channel planting needles 3 into the right side of the abdomen, the left side of the abdomen, the right side of the back and the left side of the back of a patient, the arc-shaped channel planting needle holes are required to be matched with the plastic arc-shaped channel planting needles 3 for installing needle cores, and the diameter of the arc-shaped channel planting needle holes is 3mm. The vulva fixing template 2 is a round corner cube with the diameter of 70 multiplied by 50 multiplied by 10mm, the chamfer radius is 3mm, a round hole with the diameter of 31mm is arranged in the center, and the colpitis-shaped applicator 1 is embedded and fixed. The template insertion needle guide holes with the diameter of 3mm are distributed on the vulva fixed template 2 in a matrix of 7 multiplied by 5 and 1cm, so that the original template technology is covered, the template insertion needles 5 can be given to the vulva fixed template 2, and the offset in the operation is dealt with to carry out the supplementary adjustment.

As shown in fig. 4, the bottom of the vaginal columnar applicator 1 is provided with a groove for adjusting the insertion depth. The edge of the central round hole of the vulva fixed template 2 is provided with a buckle which is rotationally fixed with the groove part of the columniform applicator 1, so that the two parts form a stable rigid structure, the whole fixed template-columniform applicator can be bound and fixed with the body of a patient through a T-shaped belt after operation, and the displacement of the applicator in the process of transferring the patient is reduced.

As shown in fig. 5, the arc-shaped channel inserting needles 3 are distributed on the bottom surface of the colposcopic columnar applicator 1 in a 4×4 matrix, the curvature radius is larger than 50mm, and the requirement of the arc-shaped channel inserting needles 3 for the curvature radius larger than 20mm in the using specification is met. The pinholes on the bottom surface of the columned vaginal applicator 1 are in the direction of parallel columns at the entry end, so that the columned vaginal applicator is easy to distinguish, and the paths of the arc-shaped channel inserting needles 3 are not blocked.

The specific implementation process of the utility model is as follows:

prior to radiation therapy application, a brachytherapy area is determined based on the patient's examination results, in combination with the condition, the prescribed treatment area including the uterine stunt tumor, and the preventative treatment area including the peri-tumor and part of the vagina. And then a columnar positioning plug is placed in the vaginal columnar applicator, CT scanning is carried out, a pre-plan is made, the placement depth of the vaginal columnar applicator 1 is reasonably adjusted according to the expected measurement result, the positions of pinholes on the vaginal columnar applicator 1 are selected, and the insertion depth of each pinhole position is measured and recorded. The operation process is that the patient is firstly positioned at the lithotomy position; the columella-shaped applicator 1 and the vulva fixed template 2 are rotationally fixed by a buckle to adjust the depth of the columella-shaped applicator 1 to finish the implantation; then selecting the needle hole position on the columned vaginal applicator 1 to insert each implantation needle, and controlling the implantation depth of each needle according to real-time ultrasound; finally, the whole applicator is fixed by a T-shaped belt.

The utility model can effectively reduce the implantation depth in normal tissues, and simultaneously, the treatment area and the prevention area reach corresponding doses by minimum effective implantation. The universal stump source applicator mode is formed by selecting a specially designed arc deflection implantation path and precisely controlling implantation depth; can improve the operation efficiency, simplify the operation difficulty, shorten the operation time, improve the stability and repeatability, cover the large-scale dosage with low trauma and have wide application range. The design cost is reduced, the medical resources are saved, the popularization effect is achieved for the development of the close-range post-treatment containing treatment technology with obvious curative effect in China, and good news is brought to patients.

In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.

Claims

1. The utility model provides a general gynaecology's source applicator of arc needle passageway, its characterized in that includes vaginal column source applicator (1) and vulva fixed template (2), vaginal column source applicator (1) is located in the round hole of vulva fixed template (2) positive center and passes through the buckle with the round hole and be connected; arc-shaped channel planting pin holes penetrating through the bottom are respectively formed in two sides of the columned vaginal applicator (1), and arc-shaped channel planting pins (3) are arranged in the arc-shaped channel planting pin holes; the top of the columniform source applying device (1) is provided with a columniform vertical planting pin hole which vertically penetrates through the bottom from top to bottom, the columniform vertical planting pin holes are mutually parallel, and a columniform vertical planting pin (4) is arranged in the columniform vertical planting pin hole.

2. The gynecological applicator with the universal arc needle channel according to claim 1, wherein a convex buckle is arranged on the inner side of a central round hole of the vulva fixing template (2), a strip-shaped groove is formed in the lateral surface of the colpitis applicator (1), and rectangular grooves which are uniformly distributed are formed in one side of the inner part of the strip-shaped groove.

3. The gynecological applicator of claim 1, wherein the vaginal columnar applicator (1) comprises a cylinder and a hemisphere with the same diameter, wherein the bottom surface of the hemisphere coincides with the top of the cylinder.

4. The arc needle channel universal gynecological applicator according to claim 1, wherein the arc channel insertion pinholes on both sides of the vaginal columnar applicator (1) are symmetrical along the central axis of the vaginal columnar applicator (1).

5. The gynecological applicator with the universal arc needle channel according to claim 1, wherein the vulva fixing template (2) is a round corner cube, a template inserting needle guide hole is formed in the vulva fixing template (2), and the template inserting needle (5) is arranged in the template inserting needle guide hole.

6. The universal gynecological applicator for arc-shaped needle channels according to claim 1, wherein the arc-shaped channel insertion needle (3) consists of a needle core and a plastic needle tube.