CN219398755U - Post-assembly interpolation guide template for transperineal female urethra cancer - Google Patents

Abstract

The utility model discloses a post-mounting interpolation guide template for transperineal female urethra cancer, which comprises a main template, a coordinate system guide post, a fixed needle post and a vagina guide post, wherein the main template is of a free T-shaped structure which is fit with a human body, the upper half part of the main template is covered on the abdomen of the human body, the lower half part of the main template is fit with the perineum, and a urethra hole is formed at the outlet of the urethra; the coordinate system guide post is of a hollow cylindrical structure, a puncture needle can be inserted in the middle of the coordinate system guide post, and an array is arranged around the urethral orifice, and the position, the angle and the height of the coordinate system guide post correspond to the position, the depth and the angle of the needle to be inserted; the fixed needle column is of a hollow cylindrical structure, a fixed needle can be inserted in the middle of the fixed needle column, and the fixed needle column is arranged at the upper part of the main template; the vagina guiding post is of a flat arc structure and is arranged at the lower part of the urethral orifice. The post-assembly interpolation guide template for the perineum female urethra cancer is convenient to use, and can accurately control the needle insertion point, the needle insertion angle and the needle insertion depth in the needle insertion process, so that the treatment damage of patients is reduced.

Description

Post-assembly interpolation guide template for transperineal female urethra cancer

Technical Field

The utility model belongs to the technical field of medical experiments, and particularly relates to a post-assembly interpolation guide template for perineum female urethra cancer.

Background

The urethra cancer is clinically rare, women have more frequent women than men, and symptoms such as urethra bleeding, frequent urination, urgent urination, painful urination and the like can be caused in early stage, and the traditional treatment scheme comprises operation and radiation treatment. For the later-stage urethra cancer, once all urethra and bladder are required to be resected in operation, the urinary tract is difficult to reconstruct, and only the abdomen or the back waist is fistulized, so that the patient can live with a urine bag for life, and the life quality is low; radiation therapy can retain the urination function of natural physiological state, but research shows that radiation therapy technology can achieve better curative effect by combining external radiation and radiotherapy and then arranging the radiation therapy formula. The posterior loading is divided into intracavity treatment and interpolation treatment, and the dose distribution of the interpolation treatment is superior to that of the intracavity treatment due to the problem of urethra dose tolerance.

Post-loading interpolation treatment is to insert a puncture needle from outside the body into the tumor tissue through the skin or around the tumor tissue, and because the cancer of the urethra is limited by the dosage of the urethra itself, the puncture needle is often not suitable to be placed into the urethra or is too close to the urethra. How the optimal dose distribution is achieved depends on the experience and skill of the clinician, the most central of which is the position, angle and depth of penetration. The prior art generally adopts CT guiding and manual blind insertion technology, the method has high technical requirement, long learning curve, often times, doctors with rich experience still cannot succeed once, and the angle of needle track and the depth of needle insertion are required to be adjusted repeatedly, so that larger treatment-related damage is brought to patients.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides the interpolation guide template which is convenient to use and can accurately control the needle insertion point, the needle insertion angle and the needle insertion depth in the needle insertion process and reduce the damage of patients in treatment of the perineal female urethra cancer.

In order to achieve the above purpose, the technical scheme adopted is as follows:

the utility model provides a post-mounting interpolation guide template of perineum female urethra cancer, includes main template, coordinate system guide post, fixed needle post, vagina guide post, the main template is the free T shape structure of laminating human body, and the upper half covers in human abdomen, and the lower half is laminated with the perineum, opens the urethra hole in urethra exit, can pour into diluted contrast medium through the urethra hole, realizes the imaging discernment of urethra in the course of treatment, guarantees that urethra part does not surpass the dose limiting value when sufficient therapeutic dose; the coordinate system guide post is of a hollow cylindrical structure, the middle of the coordinate system guide post can be inserted with a puncture needle, and the position, the angle and the height of the coordinate system guide post correspond to the position, the depth and the angle of a needle to be inserted, so that the accurate control of needle insertion can be realized through the coordinate system guide post, almost no adjustment is needed, the needle insertion is completed once every time, and the treatment damage of a patient can be greatly reduced; the fixed needle column is of a hollow cylindrical structure, a fixed needle can be inserted into the middle of the fixed needle column, and the fixed needle column is arranged at the upper part of the main template and is used for fixing the upper part of the main template; the vagina guiding post is of a flat arc structure and is arranged at the lower part of the urethra hole and used for being inserted into vagina to strengthen the overall stability of the template.

As another preferable scheme of the utility model, virtual pinholes are also arranged around the coordinate system guide column, after the first treatment, edema may occur on the body surface of the patient, so that the template alignment cannot be completely attached, and the auxiliary pinholes can be inserted for attachment and fixation when small errors exist in the needle track alignment by arranging the virtual pinholes around the coordinate system guide column.

As another preferable scheme of the utility model, the vaginal guide post is also provided with a vaginal guide post needle hole for increasing the annular needle distribution point behind the urethra and further improving the urethra dosage.

As another preferable scheme of the utility model, the main template, the coordinate system guide post, the fixed needle post and the vagina guide post are integrated structures of 3D printing, so that the fit with a human body, and the needle inserting position, depth and angle are ensured.

As another preferable scheme of the utility model, the main template, the coordinate system guide post, the fixed needle post and the vagina guide post are made of materials suitable for 3D printing.

Compared with the prior art, the post-perineal female urethra cancer interpolation guide template provided by the utility model has the following gain effects:

(1) The embodiment can accurately control the needle inserting point, the needle inserting angle and the needle inserting depth in the needle inserting process through the coordinate system guide column, almost no adjustment is needed, and the needle inserting is completed once each time, so that the treatment damage of a patient is greatly reduced; by arranging the virtual pinholes around the coordinate system guide column, the auxiliary pinholes can be inserted for lamination and fixation when edema and small errors exist in needle track alignment of a patient.

(2) In the embodiment, the diluted contrast agent can be injected into the urethral orifice through the urethral orifice, so that the imaging identification of the urethra in the treatment process is realized, the treatment dose is controlled not to exceed the dose limiting value at the local part of the urethra, and the dose safety is ensured when a good treatment effect is achieved.

Drawings

Fig. 1 is a schematic view of the front angle of the present utility model, fig. 2 is a schematic view of the side angle of the present utility model, fig. 3 is a schematic view of the rear angle of the present utility model, and fig. 4 is a schematic view of the present utility model.

Wherein: 1-a master template; 11-urethral orifice; 2-guiding columns of a coordinate system; 3-fixing the needle column; 4-a vaginal guide post; 41-vaginal guide post needle hole; 5-virtual pinholes.

Detailed Description

For a better understanding of the present utility model, specific embodiments of the utility model are described in further detail below with reference to the drawings.

As shown in fig. 1-3, the post-assembly interpolation guide template for perineal female urethra cancer comprises a main template 1, a coordinate system guide post 2, a fixed needle post 3 and a vagina guide post 4, wherein the main template 1 is of a free T-shaped structure which is fit with a human body, the upper half part of the main template is covered on the abdomen of the human body, the lower half part of the main template is fit with the perineal part, and a urethra hole 11 is formed at the urethra outlet; the coordinate system guiding column 2 is of a hollow cylindrical structure, a puncture needle can be inserted in the middle of the coordinate system guiding column 2, the coordinate system guiding column is an array arranged around the urethral orifice 11, the position, the angle and the height of the coordinate system guiding column correspond to the position, the depth and the angle of a needle to be inserted, and virtual pinholes 5 are further arranged around the coordinate system guiding column 2; the fixed needle column 3 is of a hollow cylindrical structure, a fixed needle can be inserted in the middle of the fixed needle column, and the fixed needle column is arranged at the upper part of the main template 1; the vagina guiding column 4 is of a flat arc structure and is arranged at the lower part of the urethra hole 11, and the vagina guiding column 4 is also provided with a vagina guiding column pinhole 41. The main template 1, the coordinate system guide post 2, the fixed needle post 3 and the vagina guide post 4 are integrated structures for 3D printing, and the materials are materials suitable for 3D printing.

As shown in fig. 4, when in use, firstly, a 3-dimensional model of a patient is reconstructed by using a CT image, a preoperative simulated treatment plan is formulated, and the shape and the size of the main template 1 and the vaginal guide post 4, the number, the position, the angle, the height and the like of the coordinate system guide posts 2 are designed to obtain a 3D printing template and complete printing; the guiding template is arranged and fixed at a set position of a patient through a fixed needle column 3 and a vagina guiding column 4, a catheter is inserted through a urethral orifice 11, and contrast agent is injected into the catheter to develop the urethra; the puncture needle is inserted through the coordinate system guide post 2 according to the preoperative plan; performing repeated CT, performing dose optimization in operation according to urethra development, and adjusting the needle track position if necessary; if edema occurs on the body surface of the patient, the main template 1 cannot be completely attached to the body surface, and an auxiliary needle can be inserted into the virtual needle holes 5 around the coordinate system guide column 2 for fixation; after the post-loading treatment is completed according to the planned line, the puncture needle and the fixed needle are pulled out, the template is taken down and sterilized, and the next use is reserved.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (5)

1. An interpolation guide template installed after perineum female urethra cancer is characterized by comprising a main template, a coordinate system guide post, a fixed needle post and a vagina guide post,

the main template is of a free T-shaped structure which is fit with a human body, the upper half part of the main template is covered on the abdomen of the human body, the lower half part of the main template is fit with the perineum, and a urethra hole is formed at the urethra outlet;

the coordinate system guide post is of a hollow cylindrical structure, a puncture needle can be inserted in the middle of the coordinate system guide post, and the coordinate system guide post is an array arranged around the urethral orifice, and the position, the angle and the height of the coordinate system guide post correspond to the position, the depth and the angle of the needle to be inserted;

the fixed needle column is of a hollow cylindrical structure, a fixed needle can be inserted in the middle of the fixed needle column, and the fixed needle column is arranged at the upper part of the main template;

the vagina guiding post is of a flat arc structure and is arranged at the lower part of the urethral orifice.

2. The post-perineal female urethra cancer fitted interpolation guide template according to claim 1, wherein virtual pinholes are further provided around the coordinate system guide posts.

3. The post-perineal female urethra cancer mounting interpolation guide template according to claim 1, wherein a vaginal guide post needle hole is further arranged on the vaginal guide post.

4. The post-perineal female urethra cancer mounting interpolation guide template according to claim 1, wherein the main template, the coordinate system guide post, the fixed needle post and the vagina guide post are integrated structures for 3D printing.

5. The post-perineal female urethra cancer mounting interpolation guide template according to claim 1, wherein the main template, the coordinate system guide post, the fixed needle post and the vagina guide post are made of materials suitable for 3D printing.