CN214970945U

CN214970945U - Catheter for radiotherapy of pelvic tumor

Info

Publication number: CN214970945U
Application number: CN202023131755.5U
Authority: CN
Inventors: 王首龙; 何勇; 王先良; 汤婷; 黎杰; 祁国海
Original assignee: Sichuan Cancer Hospital
Current assignee: Sichuan Cancer Hospital
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-12-03
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a catheter for radiotherapy of pelvic tumor, which comprises a main catheter and a water sac; the front section of the main catheter is provided with a urethral catheterization port, the tail section of the main catheter is provided with a urethral catheterization bag interface, and the urethral catheterization port is communicated with the urethral catheterization bag interface through the lumen of the main catheter; the water sac is arranged on the outer wall of the front section of the main catheter and communicated with a water sac tube cavity arranged in the extending direction of the main catheter, and an interface of the water sac tube cavity is located at the tail section of the main catheter. The scheme can solve the problems that the existing catheter is easily infected by a patient and career exposure of medical staff and increases the risk of occurrence probability of medical errors when being applied to the radiotherapy process of pelvic tumor, and the problem that the treatment precision is influenced because the volume of the bladder cannot be kept consistent all the time.

Description

Catheter for radiotherapy of pelvic tumor

Technical Field

The utility model relates to a pelvic cavity tumour brachytherapy technical field especially relates to a catheter for pelvic cavity tumour radiotherapy.

Background

When a patient with pelvic tumor is subjected to brachytherapy, the bladder of the patient needs to be inflated to a medium degree in order to ensure the consistency of the position of a tumor target region and reduce the irradiated dose of the bladder; the method comprises the steps of installing a catheter for a patient before treatment by using an existing catheter (see Chinese patent with patent number CN 205964671U), fixing the catheter by inflating an air bag, injecting a certain volume of physiological saline (usually 150-200 cc) into the bladder, performing CT (computed tomography) positioning scanning, emptying the saline in the bladder after scanning is finished, waiting for a doctor to draw a target area and plan design, re-injecting the same volume of physiological saline into the bladder after the plan design is finished, and then performing treatment.

However, the existing catheters still have a plurality of defects in the process of being applied to radiotherapy of pelvic tumors; on the first hand, as medical staff are required to carry out two times of saline injections in the using process, the risks of patient infection, professional exposure of the medical staff and increase of the occurrence probability of medical errors exist; in the second aspect, since the patient also secretes urine during the treatment, the volume of the bladder cannot be kept consistent all the time, which affects the accuracy of the treatment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a catheter for pelvic cavity tumour radiotherapy to solve present catheter and lead to patient infection and medical staff occupation to expose and increased the problem that medical treatment mistake takes place probability risk easily being applied to pelvic cavity tumour radiotherapy in-process and exist, and can't keep the volume of bladder unanimous and influence the problem of treatment precision all the time.

In order to solve the above problem, the utility model adopts the following technical scheme:

a catheter for radiotherapy of pelvic tumors comprises a main catheter and a water sac; the front section of the main catheter is provided with a urethral catheterization port, the tail section of the main catheter is provided with a urethral catheterization bag interface, and the urethral catheterization port is communicated with the urethral catheterization bag interface through the lumen of the main catheter; the water sac is arranged on the outer wall of the front section of the main catheter and communicated with a water sac tube cavity arranged in the extending direction of the main catheter, and an interface of the water sac tube cavity is located at the tail section of the main catheter.

Optionally, the water bladder is arranged around the circumferential direction of the main catheter and forms a communicating annular bladder-like structure.

Optionally, the urinary catheter further comprises a balloon; the air bag is arranged on the outer wall of the front section of the main catheter and is communicated with an air bag tube cavity arranged along the extending direction of the main catheter; the urethral catheterization opening and the water sac are both positioned in front of the air sac, and the interface of the cavity of the air sac is positioned at the tail section of the main catheter.

Optionally, the balloon is disposed around a circumferential direction of the main conduit and forms a communicating annular bladder-like structure.

Optionally, the front section of the main conduit is further provided with a flushing port; the flushing port is located in front of the air bag and communicated with a flushing fluid pipe cavity arranged along the extending direction of the main catheter, and an interface of the flushing fluid pipe cavity is located at the tail section of the main catheter.

Optionally, the irrigation port is located in front of the water bladder, and the urethral catheterization port is located between the water bladder and the air bladder.

The utility model discloses a technical scheme can reach following beneficial effect:

the utility model discloses a catheter for pelvic cavity tumor radiotherapy, which is characterized in that the water sac is additionally arranged at the front section of the main catheter, so that the rear water sac can be positioned in the bladder of a patient after the front section of the main catheter extends into the bladder fixed on the patient, and then the normal saline is injected into the water sac through the water sac tube cavity through the interface of the water sac tube cavity so as to achieve the purpose of filling the bladder; in addition, the urine secreted by the patient can flow into the urethral catheterization bag connected with the urethral catheterization bag interface through the urethral catheterization opening and the lumen of the main catheter in the treatment process, thereby avoiding the influence on the volume of the bladder, facilitating the smooth urination and ensuring the consistency of the volume of the bladder; therefore, compare in current catheter, the utility model discloses a catheter both can reduce the number of times that medical personnel are full of bladder injection normal saline, and then reduce patient infection and medical staff occupation and expose and the risk that the medical treatment mistake takes place the probability, can guarantee again that the volume of bladder remains unanimous throughout, and then improves the precision of treatment, is applicable to pelvic cavity tumour radiotherapy's use better.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic view of a catheter according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a main duct disclosed in an embodiment of the present invention;

description of reference numerals:

100-main catheter, 101-urethral catheterization, 102-urethral catheterization lumen, 103-urethral catheterization bag interface, 104-flushing port, 105-flushing fluid lumen, 106-flushing fluid lumen interface, 107-interlayer, 110-water sac, 111-water sac lumen, 112-water sac lumen interface, 120-air sac, 121-air sac lumen, 122-air sac lumen interface.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, the embodiment of the present invention discloses a catheter for radiotherapy of pelvic tumors, which comprises a main catheter 100 and a water bag 110; the front section of the main catheter 100 is provided with a urethral catheterization port 101, the tail section of the main catheter 100 is provided with a urethral catheterization bag interface 103, and the urethral catheterization port 101 is communicated with the urethral catheter bag interface through the lumen of the main catheter 100; the water bag 110 is disposed on the outer wall of the front section of the main catheter 100 and is communicated with a water bag lumen 111 disposed along the extending direction of the main catheter 100, and the interface 112 of the water bag lumen 111 is located at the end section of the main catheter 100.

Wherein, the water sac 110 is additionally arranged at the front section of the main catheter 100, so that the water sac 110 can also be positioned in the bladder of the patient after the front section of the main catheter 100 extends into and is fixed in the bladder of the patient, and then the normal saline is injected into the water sac 110 through the water sac lumen 111 through the interface 112 of the water sac lumen 111, thereby achieving the purpose of filling the bladder; in addition, the lumen of the main catheter 100 can be used as a catheter lumen 102, and during the treatment process, the urinary fluid can flow into the catheter bag connected with the catheter bag interface 103 through the catheter port 101 via the lumen of the main catheter 100, so that the influence on the volume of the bladder is avoided, the smooth urination is facilitated, and the consistency of the volume of the bladder is ensured; after the treatment is completed, the main catheter 100 can be removed from the bladder by draining the saline in the water bladder 110 through the water bladder lumen 111 through the interface 112 of the water bladder lumen 111, so that the water bladder 110 empties into a deflated state.

Therefore, compare in current catheter, the utility model discloses a catheter both can reduce the number of times that medical personnel are full of bladder injection normal saline, and then reduce patient infection and medical staff occupation and expose and the risk that the medical treatment mistake takes place the probability, can guarantee again that the volume of bladder remains unanimous throughout, and then improves the precision of treatment, is applicable to pelvic cavity tumour radiotherapy's use better.

Preferentially, the water sac 110 is arranged around the circumferential direction of the main catheter 100 and forms an annular sac-shaped structure for communication, so that after the physiological saline is injected into the water sac 110, the physiological saline can surround the main catheter 100 and is uniformly distributed all around, and the filling effect on the bladder is prevented from being influenced due to the fact that the local exposure position exists all around the main catheter 100.

To facilitate the installation of the main catheter 100 in the bladder, as shown in fig. 1, the catheter may further comprise a balloon 120; the balloon 120 is disposed on the outer wall of the front section of the main catheter 100 and is communicated with a balloon lumen 121 disposed along the extending direction of the main catheter 100; the urethral catheterization port 101 and the water bladder 110 are both located in front of the balloon 120, and the interface 122 of the balloon lumen 121 is located at the end of the main catheter 100.

After the front section of the main catheter 100 is inserted into the bladder through the bladder opening, the interface 122 of the balloon lumen 121 inflates the balloon 120 through the balloon lumen 121 or normal saline, so that the balloon 120 bulges in the bladder to form a limiting part opposite to the bladder opening, the front section of the main catheter 100 can be prevented from being withdrawn and falling off from the bladder opening, and the mounting and fixing of the catheter can be realized; after the treatment is completed, the interface 122 of the balloon lumen 121 discharges the gas or saline in the balloon 120 through the balloon lumen 121, so that the balloon 120 is deflated to take out the front section of the main catheter 100 from the bladder, thereby realizing the detachment of the catheter.

Preferably, gasbag 120 encircles the setting of main duct 100's circumferential direction to form the annular saccular structure of intercommunication, thereby make gasbag 120 can follow main duct 100 after aerifing and form the spacing portion of annular all around, and support the inner wall all around of bladder mouth through annular portion of accomodating, and then be favorable to main duct 100's balanced atress, guarantee the stationary and the reliability of catheter installation.

In the catheter disclosed in the embodiment of the present invention, as shown in fig. 1, the front section of the main catheter 100 is further provided with a flushing port 104; the flushing port 104 is located in front of the balloon 120 and communicates with a flushing fluid lumen 105 arranged in the extension direction of the main catheter 100, and the interface 106 of the flushing fluid lumen 105 is located at the end section of the main catheter 100.

After the front section of the main catheter 100 is inserted into the bladder to complete the installation and fixation of the urinary catheter, the interface 106 through the flushing fluid lumen 105 can continuously inject the normal saline into the bladder through the flushing fluid lumen 105 and the flushing port 104 to perform the bladder flushing operation, and the normal saline after flushing the bladder can be gradually discharged into the urinary catheter through the urinary catheter port 101 through the urinary catheter lumen 102 and the urinary catheter interface 103, so that the urinary catheter disclosed by the embodiment of the invention can also meet the use requirement of continuously flushing the bladder.

Specifically, as shown in fig. 2, a partition 107 may be disposed in the lumen of the main catheter 100, and two mutually independent lumens are formed by the partition 107; wherein one lumen is an irrigation fluid lumen 105, and the other lumen is a catheterization lumen 102; therefore, in the bladder flushing process, the water inlet and outlet flows of the physiological saline can be respectively carried out through the corresponding tube cavities, and the continuous flushing of the bladder is further realized.

Preferably, the flushing port 104 is located in front of the water bag 110, and the urethral catheterization port 101 is located between the water bag 110 and the air bag 120; therefore, the flushing port 104 positioned in front of the water sac 110 can avoid the problem of blockage and unsmooth flushing caused by sticking to the inner wall of the bladder, and is beneficial to the physiological saline smoothly entering the bladder through the flushing port 104; meanwhile, the urethral catheterization opening 101 is positioned between the water bag 110 and the air bag 120, so that the urethral catheterization opening 101 can be positioned in the bladder when the urinary catheter is used, the position of the urinary catheter is relatively low, and urine or flushing normal saline in the bladder can be discharged through the urethral catheterization opening 101 more easily.

The embodiment of the utility model discloses in the catheter, as shown in fig. 1, main duct 100's lumen, water pocket lumen 111 and gasbag lumen 121 can be for the three-layer sleeve structure of establishing by interior to outer cover in proper order, though can increase the pipe diameter size of catheter, but can reduce the processing manufacturing cost and the degree of difficulty of catheter.

Of course, the water sac lumen 111 and the air sac lumen 121 may also be a duct structure disposed in the wall of the main catheter 100, so as to effectively reduce the diameter size of the catheter and facilitate the insertion of the front section of the main catheter 100 into the bladder through the bladder opening, but compared with the above structure, the processing and manufacturing cost and difficulty of the catheter are relatively increased.

Meanwhile, the lumen of the main catheter 100 can also be directly used as the catheterization lumen 102, and the wall of the main catheter 100 is separately provided with a pore canal structure as the flushing fluid lumen 105 communicated with the flushing port 104; the main catheter 100, the water bladder 110 and the air bladder 120 may be structural members made of medical rubber or latex, etc.

The utility model discloses what the key description in the above embodiment is different between each embodiment, and different optimization characteristics are as long as not contradictory between each embodiment, all can make up and form more preferred embodiment, consider that the literary composition is succinct, then no longer describe here.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A catheter for radiotherapy of pelvic tumors is characterized by comprising a main catheter and a water sac; the front section of the main catheter is provided with a urethral catheterization port, the tail section of the main catheter is provided with a urethral catheterization bag interface, and the urethral catheterization port is communicated with the urethral catheterization bag interface through the lumen of the main catheter; the water sac is arranged on the outer wall of the front section of the main catheter and communicated with a water sac tube cavity arranged in the extending direction of the main catheter, and an interface of the water sac tube cavity is located at the tail section of the main catheter.

2. A catheter according to claim 1, wherein said water bladder is arranged around the circumference of said main catheter and forms a communicating annular bladder-like structure.

3. A catheter according to claim 1 or 2, further comprising a balloon; the air bag is arranged on the outer wall of the front section of the main catheter and is communicated with an air bag tube cavity arranged along the extending direction of the main catheter; the urethral catheterization opening and the water sac are both positioned in front of the air sac, and the interface of the cavity of the air sac is positioned at the tail section of the main catheter.

4. A catheter according to claim 3, wherein said balloon is arranged around the circumference of said main catheter and forms a communicating annular sac-like structure.

5. A catheter according to claim 4, wherein the front section of the main catheter is further provided with an irrigation port; the flushing port is located in front of the air bag and communicated with a flushing fluid pipe cavity arranged along the extending direction of the main catheter, and an interface of the flushing fluid pipe cavity is located at the tail section of the main catheter.

6. A catheter according to claim 5, wherein said irrigation port is located in front of said water bladder and said urinary catheter port is located between said water bladder and said balloon.