CN216676738U

CN216676738U - Vagina marking tube for cervical cancer radiotherapy

Info

Publication number: CN216676738U
Application number: CN202123117968.7U
Authority: CN
Inventors: 邬容
Original assignee: Mianyang Central Hospital
Current assignee: Mianyang Central Hospital
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-06-07
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses a vaginal marking tube for cervical cancer radiotherapy, which can mark the boundary between vagina and cervix when positioning CT, and can obtain vaginal depth data at the same time, so that a doctor can conveniently formulate a radiotherapy scheme; the structure thereof comprises: the vagina and cervix dividing line can be clearly marked after the vagina is placed into the outer tube, and meanwhile, the position of the inner plug is adjusted by pulling the pull strip, so that the depth of the vagina is obtained, and a doctor can be helped to more accurately confirm a radiotherapy scheme.

Description

Vagina marking tube for cervical cancer radiotherapy

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to a vaginal marking tube for cervical cancer radiotherapy.

Background

Cervical cancer is one of the most common malignant tumors in gynecology, the middle and advanced stages are mainly radiation therapy, the scheme of cervical cancer radiotherapy can be divided into external radiation and intracavity radiation, and the external radiation radiotherapy is mainly three-dimensional conformal radiotherapy and intensity modulated radiotherapy and mainly aims at the uterus, parauterine and metastatic lymph nodes. The intracavitary radiotherapy adopts iridium-192 high-dose rate intracavitary and tissue interpolation radiotherapy, and mainly aims at giving high-dose irradiation to cervix, vagina and partial parauterine tissues. The reasonable combination of external irradiation and intracavity radiotherapy ensures that the dose distribution of the lesion part is more in line with the biological characteristics of the tumor, and can improve the local control rate.

However, when radiotherapy is performed, the influence on peripheral tissues should be avoided, but when the target treatment region is located, the position of the vagina cannot be clearly seen in the CT image, but the boundary between the vagina and the cervix is needed to be known when radiotherapy is performed, otherwise the target region for radiation cannot be accurately determined, and the prior art mostly judges through manual experience, but the error of the method is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vaginal marker tube for cervical cancer radiotherapy, which not only can obviously mark the boundary between the vagina and the cervix in CT, but also is disposable in design and safe in use.

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

a vaginal marker tube for use in cervical cancer radiation therapy comprising: an outer tube and an inner plug;

the outer pipe is a section of sealed long pipe, and a channel is arranged in the outer pipe;

the inner plug includes: the plug is a cylinder with the outer diameter the same as the inner diameter of the channel of the outer pipe in shape, is positioned in the channel of the axis of the outer pipe and can move in the channel, one end of the brace is fixed on the end face of the plug, which faces one side of the open end of the outer pipe, and the other end of the brace is a free end.

Further, the axis of the passage coincides with the axis of the outer tube.

Furthermore, an end capsule is arranged at the position, close to the sealing end, of the outer tube, the end capsule is not communicated with the axial line channel of the outer tube, and medical developer is arranged in the end capsule.

Furthermore, the open end of the outer pipe is provided with two end blocks, the end blocks are cylindrical bodies with semicircular sections, the end blocks and the outer pipe are rotatably connected through a rotating shaft,

further, the inside plug further comprises: and the vent hole is arranged on the partition plug and communicates two end faces of the partition plug.

Furthermore, a scale strip is arranged on the brace.

Furthermore, a plurality of groups of tearing openings are arranged on the pull strip at intervals, and each group of tearing openings consists of a plurality of tearing openings which are positioned on the same straight line.

Furthermore, the tearing opening is a rhombic opening, the long axis of the rhombus is perpendicular to the extending direction of the pulling strip, a connecting line is arranged in the tearing opening, and the connecting line is superposed with the short axis of the rhombus.

The present invention has at least the following advantageous effects.

(1) The vagina-embedded type CT endoscope is convenient to use, and can improve the developing effect under CT by matching with the end capsule at the end part of the outer tube, so that a doctor can know the dividing line between the vagina and the cervix, and the doctor is assisted to accurately make a radiotherapy target area plan.

(2) The inner plug is further arranged in the outer tube and moves in the outer tube through the control of the pull strip, after the outer tube is placed into the vagina, the position of the inner plug is adjusted through pulling the pull strip, the pull strip is provided with scale marks, the placement depth is determined through the scale marks, and a doctor can determine a radiotherapy plan.

(3) The disposable sanitary towel is disposable and can be discarded after use, thereby ensuring the safety and sanitation of use.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In the drawings:

FIG. 1 schematically illustrates a structural schematic of the present invention;

figure 2 shows schematically the structure of an end-block according to the utility model;

FIG. 3 is a schematic view showing the structure of the inner plug in the present invention;

FIG. 4 is a schematic view showing the structure of a brace in the present invention;

fig. 5 schematically shows a partially enlarged view of a portion a in fig. 4;

fig. 6 schematically shows a state diagram of use under CT according to the utility model.

Wherein the figures include the following reference numerals:

1-outer tube, 2-end block, 21-rotating shaft, 22-end capsule, 3-inner plug, 31-isolating plug and 32-vent hole;

4-pulling strip, 41-scale mark, 42-pulling opening, 43-connecting line and 5-radiotherapy target area.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure; unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application; as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures; it will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

Examples

As shown in fig. 1, the vaginal marking tube for cervical cancer radiotherapy can mark the boundary between the vagina and the cervix when positioning CT, and can obtain vaginal depth data, so that a doctor can conveniently make a radiotherapy scheme; the structure includes: outer tube 1, interior stopper 3, wherein be provided with the passageway in the outer tube 1, interior stopper 3 sets up in outer tube 1 to can move in outer tube 1, outer tube 1 is after putting into the vagina, the demarcation line of sign vagina and cervix that can be clear, simultaneously, through pulling brace 4, the position of stopper 3 in the adjustment, and then obtain the degree of depth of vagina, help the more accurate definite radiotherapy scheme of doctor.

As shown in fig. 1, the outer tube 1 is a section of sealed long tube, a channel is arranged in the outer tube 1, the axis of the channel coincides with the axis of the outer tube 1, an end capsule 22 is arranged at a position close to the sealing end, the end capsule 22 is not communicated with the axis channel of the outer tube 1, and a medical developer is arranged in the end capsule 22. because the material of the outer tube 1 is different, the development of some medical materials under CT is not obvious, the developer is arranged through the end capsule 22, the development degree under CT can be improved, the obtained mark is more obvious, meanwhile, the requirement on the development degree of the material of the outer tube 1 is lower, and the selection range of the material of the outer tube 1 is larger.

The other end of the outer tube 1 is provided with two end blocks 2, as shown in figures 1-2, the end blocks 2 are cylindrical bodies with semicircular sections, the end blocks 2 are rotatably connected with the outer tube 1 through rotating shafts 21, the two end blocks 2 are folded to form a cylinder with the same shape as the outer tube 1, the open end of the outer tube 1 is closed, and after the two end blocks 2 are unfolded, as shown by dotted lines in figure 1, the vaginal dilator is convenient to hold and insert into a vagina.

As shown in fig. 3, the inside plug 3 includes: a plug 31, a vent hole 32 and a pull strip 4, wherein the plug 31 is a cylinder with the outer diameter the same as the inner diameter of the axial channel of the outer tube 1, is positioned in the axial channel of the outer tube 1 and can move therein; the vent hole 32 is arranged on the septum 31, and the vent hole 32 communicates two end faces of the septum 31, so that the septum 31 is not obstructed by gas during movement, and the movement is smoother.

The one end of brace 4 is fixed at the terminal surface that separates stopper 31 towards outer tube 1 opening end one side, the other end is the free end, the confession people draws when using, plug 3 outwards moves in driving through brace 4, of course, before using, interior plug 3 is located the seal end of the axis passageway of outer tube 1, as shown in fig. 4~5, be provided with scale mark 41 on the brace 4, and the interval is provided with the multiunit and tears the mouth 42 on the brace 4, every group tears the mouth 42 and comprises a plurality of mouths 42 that tear that lie in same straight line, it nevertheless does not connect to tear mouth 42 each other to be close to with the group, be convenient for tear brace 4 in the use.

Of course, the graduation marks 41 should be marked to reserve a length of the side of the end capsule 22 so that the value of the graduation marks is closer to the actual length.

Furthermore, the tear opening 42 is a rhombic opening, the long axis of the rhombus is perpendicular to the extending direction of the pull strip 4, the connecting line 43 is arranged in the tear opening 42, the connecting line 43 is overlapped with the short axis of the rhombus, when the pull strip 4 is pulled, the connecting line 43 bears certain pulling force, the strength of the tear opening 42 is improved, and when the tear opening is required to be torn, a user can tear the pull strip 4 by applying force to the tear opening 42 in a concentrated mode to the two sides.

The use principle of the present embodiment is explained with reference to the drawings.

Firstly, opening the end block 2, placing the outer tube 1 into the vagina, then pulling the pull strip 4, pulling the separation plug 31 to the position of the vaginal orifice through the pull strip 4, recording the scale value on the pull strip 4 at the moment, wherein the scale value is the depth value of the vagina, then tearing the pull strip 4 off, closing the end block 2, performing CT scanning, taking the depth value of the vagina and the CT image as references, and assisting a doctor to make a more appropriate radiotherapy scheme.

Fig. 6 shows a usage state diagram of the present embodiment used in a CT machine, in which a SIEMENS SomAtom Confidence large-aperture CT simulation locator is used, and the scanning parameters used are as follows:

parameter(s)

Eff mAS

KV

Interval

FOV

Rotation time

Recontype

Numerical value

200

120

3-5mm

500mm

0.5s

Softtissue-standard

The position of the outer tube 1 can be clearly seen in fig. 6, and the demarcation of the vagina and cervix can be achieved through the outer tube 1, so that the doctor can know the boundary of the two more accurately, and the region selected by the frame in fig. 6 is the radiotherapy target area 5, so that the doctor can be assisted to determine a more accurate radiotherapy scheme through the application.

In a preferred embodiment, the developing material in the end capsule is medical barium or iodine.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vaginal marker tube for cervical cancer radiotherapy, characterized in that: the method comprises the following steps: an outer tube and an inner plug;

the outer pipe is a long pipe with one end sealed and the other end open, and a channel is arranged in the outer pipe;

the inner plug includes: the plug is a cylinder with the outer diameter same as the inner diameter of the channel of the outer pipe, is positioned in the channel of the axis of the outer pipe and can move in the channel, one end of the brace is fixed on the end face of one side of the plug facing the open end of the outer pipe, and the other end of the brace is a free end.

2. The vaginal marker tube for radiation therapy of cervical cancer according to claim 1, wherein: the axis of the channel coincides with the axis of the outer tube.

3. The vaginal marker tube for radiation therapy of cervical cancer according to claim 1, wherein: an end capsule is arranged at the position, close to the sealing end, of the outer tube, the end capsule is not communicated with a channel of the outer tube, and a medical developer is arranged in the end capsule.

4. The vaginal marker tube for radiation therapy of cervical cancer according to claim 1, wherein: the open end of the outer pipe is provided with two end blocks, the end blocks are cylindrical bodies with semicircular cross sections, and the end blocks are rotatably connected with the outer pipe through rotating shafts.

5. The vaginal marker tube for radiation therapy of cervical cancer according to claim 1, wherein: the inside plug further comprises: and the vent hole is arranged on the partition plug and communicates two end faces of the partition plug.

6. The vaginal marker tube for radiation therapy of cervical cancer according to claim 1, wherein: and the brace is provided with a scale strip.

7. The vaginal marker tube for radiation therapy of cervical cancer according to claim 1, wherein: the pull strip is provided with a plurality of groups of tearing openings at intervals, and each group of tearing openings consists of a plurality of tearing openings which are positioned on the same straight line.

8. The vaginal marker tube for radiation therapy of cervical cancer according to claim 7, wherein: the tearing opening is a rhombic opening, the long axis of the rhombus is perpendicular to the extending direction of the pulling strip, a connecting line is arranged in the tearing opening, and the connecting line is overlapped with the short axis of the rhombus.