WO2015182853A1

WO2015182853A1 - Catheter for fixing prostate

Info

Publication number: WO2015182853A1
Application number: PCT/KR2015/001553
Authority: WO
Inventors: 이제범
Original assignee: 이제범
Priority date: 2014-05-27
Filing date: 2015-02-16
Publication date: 2015-12-03
Also published as: KR20150136379A

Abstract

The present invention relates to a catheter for fixing the prostate. The purpose of the present invention is to provide a prostate fixing catheter, which is inserted into the rectum in order to restrict the movement of the prostate at the time of radiotherapy for prostate cancer, has a balloon part for fixing the prostate at the front end part thereof, can detect the exposure level of the balloon part, and enables the position of the balloon part to be accurately contrasted, thereby increasing the accuracy of a procedure. By applying the present invention, the balloon part can be accurately inserted into and expanded at the prostate's location which varies according to the patient. Thereby, the movement of the prostate can be minimized. Ultimately, an organ or a cell other than the prostate can be prevented from being exposed to the radiation. Further, by applying the present invention, it is possible to detect the exposure level through a glass dosimeter, which is attached to the balloon part, and thereby accurately check the state of a patient.

Description

Prostate fixation catheter

The present invention relates to a prostate fixation catheter, which is inserted into the rectum to fix the movement of the prostate gland during radiation treatment of prostate cancer in more detail, a balloon portion for fixing the prostate gland at its front end is formed, the balloon portion The present invention relates to a prostate fixation catheter capable of detecting the amount of exposure and increasing the accuracy of the procedure by accurately positioning the balloon portion.

As is well known, the prostate is a chestnut-sized parathyroid organ that exists only in men. It consists of grape-shaped glandular tissue and fibromuscular tissue surrounding it, and is fixed to the bladder neck and surrounds the urethra in the lower part of the bladder like a donut.

On the other hand, in recent years, as the diet is westernized and the intake of meat-based foods increases, prostate cancer among the middle-aged men in Korea is increasing rapidly. Prostate cancer (6.2%) is the fifth highest cancer incidence in men after stomach cancer (30.3%), lung cancer (15.1%), colon cancer (14.4%) and liver cancer (13.1%). In addition, the cancer growth rate of prostate cancer (6.2%) is the highest, at 12.3%.

These prostate cancers progress slowly and do not show any unusual symptoms. Most of them are found at the end and mortality is second only to lung cancer.

Methods for the treatment of prostate cancer include bronchoscopic therapy, radical prostatectomy, radiotherapy and cryotherapy. Recently, with the development of medical science, it is reported that radiation therapy is equivalent or more effective than the above-described surgical methods, and radiation is being used for the treatment of prostate cancer.

However, the treatment of prostate cancer using radiation has its own effects, but if radiation is applied to healthy normal tissues around the tumor, the site is exposed to radiation, which may cause very serious side effects.

That is, adenocarcinoma of the prostate usually occurs in the back of the prostate, which is very close to the rectal wall. Since the prostate moved during treatment, the radiation was irradiated extensively, in which case most of the rectal wall adjacent to the prostate was exposed to radiation. This will be described based on the accompanying drawings.

As shown in FIG. 1, in the radiation treatment for prostate cancer, radiation was exposed to most of the rectum including the prostate, which may cause a side effect of fibrosis of the rectal wall.

In recent years, proximity radiation therapy has been performed to eliminate these side effects and enhance the therapeutic effect. Proximity radiotherapy is expected to be widely used as a representative treatment method for prostate cancer due to the high success rate and satisfaction of patients.

Such radiotherapy has the principle of injecting a seed containing a radioisotope, a radio-emitting material, in the prostate and near the tumor, thereby causing the isotope to intensively destroy the cancerous tissue of the tumor. This treatment is particularly useful for patients who are having difficulty in surgery due to old age or heart disease, and it is attracting attention as a treatment that improves the quality of life of patients because it can be treated without experiencing urinary incontinence or erectile dysfunction, which is a representative side effect of conventional surgical treatment.

As shown in the accompanying drawings, the prostate 8 is located at the connection with the bladder 2 of the urethra 4 located in the penis 6. In addition, the radiation can be irradiated by inserting a plurality of radiation seeds 10 into the prostate 8, the radiation seed 10 is treated through a radiation seed insertion needle (not shown) and the radiation is planted in the prostate Investigate

However, such a proximity radiation therapy had a problem that the seed 10 can move to an undesired position, and even if each seed 10 is spaced apart from each other, uniform radiation is possible, but the problem is that they are adjacent to each other. This was there. In addition, the proximity radiotherapy has a problem in that the position movement of the seed 10 must be observed and corrected in the prostate through regular or irregular shooting after the procedure.

Therefore, by reducing the rectal wall included in the treatment area (radiation exposure area) during radiation treatment of prostate cancer, it is possible to minimize the side effects caused by normal tissue exposure to radiation, and to increase the treatment dose to improve the treatment efficiency Means were desperately needed.

In addition, prostate cancer should be able to determine the amount of exposure to nearby tissue during radiation treatment and whether the exposure actually occurred to nearby tissue, but it was difficult to know before further testing, and additional testing requires time and money. There was a problem that it was not economic.

On the other hand, even when attempting to fix the prostate in order to reduce the radiation exposure, there was a problem that you do not know how much fixing means should be installed to fix the prostate.

The present invention has been made in view of the above-described circumstances of the prior art, and inserted into the rectum to fix the movement of the prostate gland during radiation treatment of prostate cancer, and a balloon portion for fixing the prostate gland is formed at the front end thereof, and the balloon thereof is formed. It is an object of the present invention to provide a prostate fixation catheter capable of detecting the amount of exposure to the part and to accurately image the location of the balloon part to increase the accuracy of the procedure.

In order to achieve the above object, according to a preferred embodiment of the present invention and the swelling portion 22 for squeezing foreign matter in the prostate gland; A valve unit 24 capable of injecting physiological saline or compressed air; A cylindrical tube part 26 coupled to the front end of the suction part 22 and the valve part 24 and having an injection path 30 for moving physiological saline or compressed air in a longitudinal direction therein; It is coupled to the front end of the tube portion 26, is inserted into the rectum is located close to the prostate (8), the front end of the injection path 30 is in communication with the inside by the filling of the physiological saline or compressed air An balloon portion 28 to be expanded; A prostate fixation catheter is provided, which is formed in a central predetermined portion of the balloon portion 28 and comprises a glass dosimeter coupling portion 36 to which a glass dosimeter for detecting a radiation exposure amount is coupled.

Preferably, the glass dosimeter coupling portion 36 is provided with a prostate fixing catheter, characterized in that formed in plural on the outer surface of the balloon portion (28).

Preferably, the balloon portion 28 is provided with a prostate fixation catheter, characterized in that the position detecting portion 38 which can further detect the position of the tube on the four corners of the outer surface is formed.

Preferably, the position detecting unit 38 is provided with a prostate fixation catheter, characterized in that the contrast agent is coated with an X-ray opaque.

Prostate fixation catheter according to the present invention can be expanded by entering the balloon to a position that is exactly matched to the position of the different prostate gland for each patient, thereby minimizing the movement of the prostate gland, ultimately to organs or cells outside the prostate gland Exposure to radiation can be prevented. In addition, since the exposure dose can be detected through the glass dosimeter attached to the balloon portion, there is an advantage that it is possible to accurately check the condition of the patient.

1 is a view showing a state of radiation treatment for the prostate gland,

Figure 2 is a view showing the configuration of a catheter for fixing the prostate according to an embodiment of the present invention,

3 is a plan view showing a balloon included in the prostate fixing catheter according to an embodiment of the present invention;

4 is a photograph showing a state in which the prostate is fixed by inserting a prostate fixing catheter according to an embodiment of the present invention.

20: prostate fixation catheter,

22: a sloppy part,

24: valve section,

26: tube part,

28: balloon,

30: injection path,

32: Path for supporting support.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail with reference to drawings.

Figure 2 is a view showing the configuration of the prostate fixing catheter according to an embodiment of the present invention, Figure 3 is a plan view showing a balloon included in the catheter for fixing the prostate according to an embodiment of the present invention, Figure 4 It is a photograph showing a state in which the prostate is fixed by inserting a prostate fixing catheter according to an embodiment of the present invention.

Referring to this, the prostate fixation catheter 20 according to an embodiment of the present invention is inserted into the rectum to fix the movement of the prostate gland during radiation treatment of prostate cancer, the balloon portion for fixing the prostate to its front end portion The catheter can be formed, the amount of exposure can be detected in the balloon portion, and the position of the balloon portion can be accurately imaged to increase the accuracy of the procedure.

More specifically, the prostate fixing catheter 20 according to an embodiment of the present invention includes a swelling unit 22 for squeezing foreign matter in the prostate; A valve unit 24 capable of injecting physiological saline or compressed air; A cylindrical tube part 26 coupled to the front end of the suction part 22 and the valve part 24 and having an injection path 30 for moving physiological saline or compressed air in a longitudinal direction therein; It is coupled to the front end of the tube portion 26, is inserted into the rectum is located close to the prostate (8), the front end of the injection path 30 is in communication with the inside by the filling of the physiological saline or compressed air It comprises a balloon portion 28 to be expanded.

In more detail, the prostate fixing catheter 20 is described below.

The suction part 22 has its front and rear ends open so as to allow a support (not shown) to support the catheter when the catheter is inserted into the rectum through the suction part 22.

In addition, the swelling portion 22 has a predetermined outer portion of the shunt portion 22 and the valve portion 24 is formed separately, and the valve portion 24 has a syringe shape for injecting air or physiological saline into the balloon portion 28. A valve for engaging the means.

The tube portion 26 is formed in a hollow shape having a predetermined length, made of a rubber material excellent in elasticity and elasticity. One outer circumferential surface of the tube portion 26 requires a means for knowing the insertion depth of the balloon portion 28. Through this, the prostate position of the patient, that is, the position at which the balloon portion 28 is to be inflated should be understood as the depth of the rectum, and the means thereof will be described in detail below.

On the other hand, the balloon portion 28 is to be expanded by compressed air injected through the valve portion 24 in the state inserted into the rectum to expand the rectum, consisting of a soft rubber or synthetic resin tube portion 26 One side of) is combined with interference fit.

However, the balloon portion 28 may be coupled to the tube portion 26 by various coupling methods. For example, there may be a screw fastening method, a clip fixing method, a high frequency fusion method. At this time, it is obvious that the air must be coupled to the coupling portion of the tube portion 26 and the balloon portion 28 so as not to leak air.

On the other hand, formed in the central predetermined portion of the balloon portion 28 is composed of a glass dosimeter coupling portion 36 is coupled to a glass dosimeter (not shown) for detecting the radiation exposure amount.

That is, the glass dosimeter is a known radiation dosimeter, which can measure whether the target cancer cells or the cancer cells are accurately irradiated on the organ side, and in the present invention, the glass dosimeter is coupled to a predetermined portion of the balloon unit 28. Since the radiation dose exposed to the rectum can be measured, the exposure state of the patient can be accurately determined.

Preferably, the glass dosimeter is preferably made of a structure that can be easily attached to the glass dosimeter coupling portion 36.

On the other hand, the position of the prostate is slightly different for each patient, it is advantageous to fix the prostate gland is inserted into the patient's rectum to expand the balloon portion 28 to fix the prostate to coincide with the prostate.

Thus, the prostate fixing catheter 20 according to an embodiment of the present invention may accurately position the balloon portion 28 at a prostate position.

That is, the balloon portion 28 has a position sensing portion 38 that can detect the position of the tube on the four corners of the outer surface of the bar further, the position sensing portion 38 is an X-ray opaque contrast agent Is applied.

Therefore, when the balloon part 28 and the tube part 26 are inserted into the rectum, when the balloon part 28 is contrasted using a separate imaging device, various organs, particularly the prostate gland, of the patient are displayed. At the same time, the position detecting unit 38 is displayed in a different shape and color from the adjacent organs. Through this, the medical staff can accurately determine whether the position of the balloon portion 28 matches the position of the prostate gland.

Through this, the prostate fixing catheter 20 according to an embodiment of the present invention can be expanded by entering the balloon portion 28 to a position that is exactly matched to the position of the different prostate gland for each patient, thereby increasing the movement of the prostate gland It can be minimized.

This can ultimately prevent radiation exposure to organs or cells outside the prostate.

On the other hand, the prostate fixing catheter according to an embodiment of the present invention is not limited to the above-described embodiment, but various modifications can be made without departing from the technical gist of the present invention.

Claims

A swelling portion 22 for squeezing foreign matter inside the prostate;

A valve unit 24 capable of injecting physiological saline or compressed air;

A cylindrical tube part 26 coupled to the front end of the suction part 22 and the valve part 24 and having an injection path 30 for moving physiological saline or compressed air in a longitudinal direction therein;

It is coupled to the front end of the tube portion 26, is inserted into the rectum is located close to the prostate (8), the front end of the injection path 30 is in communication with the inside by the filling of the physiological saline or compressed air An balloon portion 28 to be expanded;

A prostate fixation catheter, comprising a glass dosimeter coupling portion 36 formed at a central predetermined portion of the balloon portion 28 to which a glass dosimeter for detecting a radiation exposure amount is coupled.
The method of claim 1,

The glass dosimeter coupling portion 36 is fixed to the prostate gland, characterized in that formed on the outer surface of the balloon portion 28.
The method of claim 1,

The balloon portion 28 is a prostate fixing catheter, characterized in that the position detecting portion 38 is further formed to detect the tube position on the four corners of the outer surface.
The method of claim 3, wherein

The position detecting unit 38 is a prostate fixation catheter, characterized in that the contrast agent is coated with X-ray opaque.