CN212593491U

CN212593491U - Insertion guiding simulation prosthesis for cervical cancer brachytherapy

Info

Publication number: CN212593491U
Application number: CN202021189857.XU
Authority: CN
Inventors: 贡志敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-02-26
Anticipated expiration: 2030-06-23

Abstract

The utility model discloses a cervical carcinoma brachytherapy insert plant guide emulation false body, including inserting the guide false body, insert the surface of inserting the guide false body and open and to have the puncture of inserting and plant into the hole, insert and plant the guide false body and offer to insert and plant the puncture passageway, and insert and plant the puncture passageway and insert and plant the puncture into the hole, insert and plant the guide false body and offer the palace chamber line passageway, it has the cross location group to be used for positioning and resetting to insert on the guide false body. The scheme has the advantages that the guide simulation prosthesis is inserted between tissues, the insertion puncture angle can be optimized, the implantation comfort is improved, a set insertion channel is arranged in the insertion guide prosthesis, the insertion implantation operation between the tissues can be better and faster carried out, the radiation therapy dose distribution is closest to the design of a dose calculation system, the front end and the side surface of the insertion guide prosthesis are provided with the cross positioning line group, the problem that the reduction of the human factors leads to inaccurate reduction of the target area of the tumor is solved, and the success rate of the insertion implantation minimally invasive operation between the cervical carcinoma tissues is greatly improved.

Description

Insertion guiding simulation prosthesis for cervical cancer brachytherapy

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to cervical carcinoma brachytherapy insert plant guide emulation false body.

Background

The tissue intervening radiation therapy is one method of inserting radioactive source into tissue to kill tumor cell in tissue in short distance and thus to treat tumor. The closely radiated treatment technology for tissue transplantation relates to radioactive source, and the core of the technology is the position and distribution reached by the dose distribution formed by radioactive source arrangement. After the radioactive source is inserted into the tissue through a micro-wound, radioactive rays are released according to a plan, so that tumor tissue is killed to the maximum extent, and surrounding normal tissues are damaged less.

At present, doctors usually puncture the target region repeatedly according to the position, size and shape of the target region by experience in clinic through tissue interventional brachytherapy, which puts high requirements on the treatment experience and skill of the doctors. Or pre-operative planning and intraoperative planning vary widely. The insertion operation performed under CT scanning usually requires inserting the needle under the direct vision of naked eyes, and the insertion angle and depth of the radioactive source are repeatedly adjusted under CT scanning.

The accuracy and repeatability of each implantation under the traditional CT scanning are difficult to guarantee. Among patients, part of the patients is cervix or vaginal stump recurrence, vaginal stenosis, large recurrence tumor, and the deficiency of the vaginal dilator itself, which can not well expose the operation visual field, and influence the insertion direction and the needle insertion site. Partial eccentric tumors, large swelling, parasternal invasion and vaginal invasion are closely related to normal tissues such as the posterior wall of the bladder, the rectum and the like, and the ideal dose distribution is difficult to achieve even higher level of the insertion puncture. During the radiation source inserting irradiation, the change of the body position and the unconscious autonomous movement of the muscle tissue can also change the preset direction of the inserting passage. These factors result in "cold zones" within the target area of treatment (under-dosing results in poor efficacy); and "hot spots" (increased response due to overdose) around the tumor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and provides an insertion guiding simulation prosthesis for cervical cancer brachytherapy.

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

cervical carcinoma brachytherapy inserts and plants emulation false body, including inserting and plant the guide false body, insert the surface of inserting the guide false body and open and to have inserted and plant the puncture inlet, insert and plant and to have seted up in the guide false body and insert and plant the puncture inlet, insert and plant and to have seted up the uterine cavity pipeline passageway in the guide false body, it has the cross location line group on the guide false body to insert and is used for the location to reset.

Furthermore, the front side end face of the insertion guiding prosthesis is a circular plane, and the rear side end face and the side face of the insertion guiding prosthesis are both rounded wavy faces.

Further, the diameter of the insertion puncture channel is 1mm-7 mm.

Further, the length of the line of the cross positioning line set is 3cm-15 cm.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the scheme has the advantages that the guide simulation prosthesis is inserted between tissues, the insertion puncture angle can be optimized, the implantation comfort is improved, a set insertion channel is arranged in the insertion guide prosthesis, the insertion implantation operation between the tissues can be better and faster carried out, the radiation therapy dose distribution is closest to the design of a dose calculation system, the front end and the side surface of the insertion guide prosthesis are provided with the cross positioning line group, the problem that the reduction of the human factors leads to inaccurate reduction of the target area of the tumor is solved, and the success rate of the insertion implantation minimally invasive operation between the cervical carcinoma tissues is greatly improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a front view of an insertion-guided artificial prosthesis for brachytherapy of cervical cancer according to the present invention;

fig. 2 is a front view of an insertion-guided artificial prosthesis for brachytherapy of cervical cancer according to the present invention;

fig. 3 is a rear view of the insertion guiding simulation prosthesis for cervical cancer brachytherapy according to the present invention.

In the figure: 1 inserting and implanting a guide prosthesis, 2 a uterine cavity tube channel, 3 a cross positioning line group and 4 inserting and implanting a puncture channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, the insertion guiding simulation prosthesis for cervical cancer brachytherapy comprises an insertion guiding prosthesis 1, wherein an insertion puncture hole is formed in the surface of the insertion guiding prosthesis 1, an insertion puncture channel 4 is formed in the insertion guiding prosthesis 1, the insertion puncture channel 4 and the insertion puncture hole are formed, a uterine tube channel 2 is formed in the insertion guiding prosthesis 1, and a cross-shaped positioning wire group 3 is formed on the insertion guiding prosthesis 1 and used for positioning and resetting.

Further, the front end face of the insertion guiding prosthesis 1 is a circular plane, and the rear end face and the side face of the insertion guiding prosthesis 1 are both rounded wavy faces.

Further, the diameter of the insertion puncture channel 4 is 1mm-7 mm.

Further, the length of the line of the cross positioning line group 3 is 3cm-15 cm.

The utility model discloses a theory of operation and use flow:

the insertion guiding prosthesis 1 is a strip-shaped cylindrical structure with uneven surface; the surface of the insertion guiding prosthesis 1 is provided with an insertion puncture hole, and the front surface of the insertion guiding prosthesis 1 is a plane similar to a circle or an ellipse; a uterine cavity tube channel 2 is arranged in the insertion guiding prosthesis 1; an inserting and implanting puncture channel 4 is arranged in the inserting and implanting guide prosthesis 1, and the inserting and implanting puncture channel 4 corresponds to the inserting and implanting puncture inlet.

After CT positioning is carried out by selecting a proper preoperative positioning template, the quantity, the position, the direction and the depth data of cervical tubes and insertion needles are obtained according to the data of the tissue insertion radiotherapy system, and the tissue insertion guiding prosthesis 1 with a guiding hole is manufactured.

The insertion of the guide prosthesis 1 can better and faster perform the operation of inserting the tissues so that the dose of the radiotherapy for inserting the tissues of the cervical cancer is closest to the preset dose requirement.

The front and the side of the insertion guiding prosthesis 1 are provided with cross positioning line groups 3 for correcting the deviation error when the insertion guiding prosthesis 1 is placed in the vagina, and the accuracy of insertion puncture is effectively improved.

The insertion guide prosthesis 1 is internally provided with a plurality of insertion puncture channels 4 which are in linear trend, are not crossed and are not parallel, and the diameter of the insertion puncture channel 4 is 1mm-7 mm.

The operation method of the artificial prosthesis comprises the following steps:

1. before the implementation, a patient needs to lie on an afterloading treatment transfer bed, and the abduction angle of the two legs is fixed. The vagina is filled with gauze or other soft material for dilating the vaginal space. CT image data are acquired.

2. After CT image data are collected, the CT image data are led into a dose calculation system. And designing and calculating an insertion needle channel according to the cervical cancer tissue insertion radiotherapy standard. And deriving or recording the spatial position coordinates of the implantation needle channel.

3. And 3-dimensional image design software is used for fusing the CT image data and the spatial position coordinate data of the insertion needle channel, reconstructing the vaginal trend spatial structure and designing an insertion guiding simulation prosthesis 1 model.

4. The insertion-guided dummy prosthesis 1 is manufactured.

5. In using the insertion-guiding prosthesis 1, the insertion-guiding prosthesis is placed into the vagina. The patient is repositioned for CT scanning. And turning on the positioning laser lamp to enable the laser line to coincide with the cross positioning line group 3 on the insertion guiding simulation prosthesis. The artificial prosthesis is guided to be inserted into the uterine cavity tube by insertion, and the insertion puncture channel 4 on the artificial prosthesis is guided to be punctured by insertion, so that the needle is stepped until the artificial prosthesis enters the designed depth. Followed by viable radiation therapy.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Cervical carcinoma brachytherapy insert plant guide emulation false body, including inserting and plant guide false body (1), its characterized in that, the surface of inserting and planting guide false body (1) is opened and is inserted and plant the puncture and advance the hole, it inserts and plants puncture passageway (4) to have seted up in guide false body (1) to insert, and inserts and plant puncture passageway (4) and insert and plant the puncture and advance the hole, it has uterine cavity line passageway (2) to insert to plant guide false body (1), it has cross location line group (3) on guide false body (1) to insert.

2. The insertion guidance simulation prosthesis for cervical cancer brachytherapy according to claim 1, wherein an anterior end surface of the insertion guidance prosthesis (1) is a circular plane, and a posterior end surface and a side surface of the insertion guidance prosthesis (1) are rounded wavy surfaces.

3. The cervical cancer brachytherapy insertion-guided dummy prosthesis according to claim 1, wherein the insertion puncture channel (4) has a diameter of 1mm-7 mm.

4. The cervical cancer brachytherapy insertion-guided prosthesis according to claim 1, wherein the cross location wire group (3) has a wire length of 3cm-15 cm.