Implanted gel type auxiliary balloon catheter
By implanting a gel-assisted balloon catheter and utilizing balloon dilation and gel injection technology, the problem of uneven isolation between the prostate and rectum was solved, achieving uniform and precise isolation between the prostate and rectum and protecting the rectum from radiation therapy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-03-27
AI Technical Summary
In the existing technology, the injection method of filling the space between the prostate and rectum with gel results in uneven isolation distance, inaccurate positioning, and insufficient range, which cannot effectively protect the rectum from radiation damage.
An implantable gel-assisted balloon catheter is used. Through the design of the catheter and balloon, the balloon is expanded to form a regular space, and the gel is injected under the guidance of ultrasound or X-ray to ensure uniform isolation between the prostate and the rectum.
It achieves uniform, precise, and sufficient isolation between the prostate and rectum, effectively protecting the rectum from radiation damage during radiotherapy and ensuring the isolation effect during radiotherapy.
Smart Images
Figure CN224039761U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the medical field, concretely relates to a kind of implant gel type auxiliary balloon catheter. BACKGROUND
[0002] Prostate cancer is one of the main malignant tumors threatening the health of Chinese men. At present, radiotherapy is one of the main treatment methods for prostate cancer. Patients with different stages of prostate cancer can undergo radical radiotherapy, postoperative radiotherapy or salvage radiotherapy. However, since the rectum is adjacent to the prostate, radiotherapy can cause varying degrees of radiation damage to the rectum, severely reducing the quality of life of patients, and there is no effective prevention and solution in China, which also limits the application of radiotherapy in the field of prostate cancer treatment in China.
[0003] To solve this problem, it is found that the anterior wall of the rectum can be isolated to a position away from the prostate, thereby reducing the radiation damage to the rectum and reducing the incidence of intestinal toxicity. For example, Boston Science SpaceOAR disposable absorbable isolation hydrogel and Huaxi Biological cross-linked sodium hyaluronate, etc. Sterile injection, absorbable polymer gel (hereinafter referred to as gel), which is injected between the prostate and the rectum, can form a temporary space to reduce damage to the rectum. However, the irregular space formed by gel or water expansion cannot make the gel aggregate into the required size and shape, resulting in uneven isolation distance between the prostate and the rectum, inaccurate isolation position, and insufficient isolation range, so that the distance and position protection interval between the prostate and the rectum are insufficient, and the protection effect is not good. SUMMARY
[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide an implant gel type auxiliary balloon catheter to solve the technical problem of insufficient distance and position protection interval between the prostate and the rectum caused by the irregular space formed by gel or water expansion when filling gel between the prostate and the rectum.
[0005] The utility model adopts the technical scheme to solve the technical problem:
[0006] First aspect:
[0007] An implant gel type auxiliary balloon catheter is provided, comprising
[0008] A catheter is used, which has two lumens, one of which is a liquid injection hole, and the other is a gel injection hole;
[0009] The balloon is provided with a shaped cavity at the front end for assisting gel filling, the balloon is arranged at the front end of the catheter, the injection hole outlet is communicated with the balloon inner cavity, and the gel injection hole outlet is communicated with the shaped cavity.
[0010] Further, the balloon front end is inverted into the balloon interior, and the balloon front end outer wall and the catheter are welded and sealed to form the inverted shaped cavity at the balloon front end.
[0011] Further, the depth of the inverted balloon front end into the balloon is 1 / 3-1 / 2 of the whole balloon.
[0012] Further, the whole balloon is in C-shaped structure to form the C-shaped shaped cavity at the balloon front end.
[0013] The second aspect is:
[0014] The use method of the implant gel type auxiliary balloon catheter is provided, which comprises the following steps: establishing a channel to the rectum and prostatic fascia gap in the perineum, inserting the folded balloon catheter into the prostatic rectum through the sheath tube,
[0015] Under the ultrasonic or X-ray observation, the farthest end of the balloon should be in the prostatic head, the balloon is filled through the external injection hole, the height of the balloon is adjusted, the position of the balloon is adjusted, and the gel filling space is formed after the balloon is inflated and expanded;
[0016] The gel is injected through the gel injection hole, the shape and size of the gel after filling are observed under the ultrasonic or X-ray observation, the balloon is withdrawn while the gel is injected into the shaped cavity, until the prostatic rectum has enough isolation space, the balloon is deflated and withdrawn, the wound is sutured, and the gel forms enough isolation space between the prostatic rectum during radiotherapy, so that the rectum is protected from radiation damage.
[0017] The beneficial effects of the utility model are:
[0018] The balloon inflation and expansion principle is used to expand the gel filling space between the prostatic rectum, the gel is uniformly filled between the prostatic rectum, the prostatic rectum has enough isolation height and range after the gel is filled, and good controllable isolation effect is obtained during radiotherapy. BRIEF DESCRIPTION OF DRAWINGS
[0019] The utility model is further described below in combination with the drawings.
[0020] Figure 1 It is the first implant gel type auxiliary balloon catheter schematic view of the utility model;
[0021] Figure 2 It is the second implant gel type auxiliary balloon catheter schematic view of the utility model;
[0022] Figure 3 is a state diagram of the implanting gel type auxiliary balloon catheter in use;
[0023] Wherein, 1, catheter, 2, balloon, 21, forming cavity. DETAILED DESCRIPTION
[0024] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the utility model will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0025] The application provides an implanting gel type auxiliary balloon catheter, which is described in detail below. It should be noted that the description order of the following embodiments is not used as a limitation on the preferred order of the embodiments of the application. Moreover, the description of each embodiment in the following embodiments has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.
[0026] To solve the technical problem of uneven isolation distance, inaccurate isolation position and insufficient isolation range of the prostate and rectum caused by the injection method of filling gel between the prostate and rectum in the past, which leads to insufficient protection interval of the prostate and rectum, an embodiment of the application provides an implanting gel type auxiliary balloon catheter. The following is described in detail.
[0027] As shown in Figure 1 and Figure 2 , an implanting gel type auxiliary balloon catheter comprises
[0028] A catheter 1 is a double-lumen tube, one of which is a liquid injection hole, and the other is a gel injection hole;
[0029] A balloon 2 is provided with a forming cavity 21 at the front end for assisting gel forming, the balloon 2 is arranged at the front end of the catheter 1, the liquid injection hole outlet is communicated with the inner cavity of the balloon 2, and the gel injection hole outlet is communicated with the forming cavity 21.
[0030] Specifically, as an optional embodiment in the embodiment, as shown in Figure 1 , the front end of the balloon 2 is inverted inside the balloon 2, and the front end of the balloon 2 is welded and sealed between the catheter 1 to form an inverted forming cavity 21 at the front end of the balloon 2, and the catheter 1 extends into the forming cavity 21.
[0031] In this embodiment, the forming cavity 21 is obtained from the mounting structure between the balloon 2 and the catheter 1, and the forming cavity 21 in this embodiment is funnel-shaped. The funnel-shaped structure facilitates the shaping of the auxiliary gel and enables the gel to have a higher support distance. The height of the balloon 2 is adjusted by adjusting the amount of liquid filled in vitro under the assistance of ultrasonic or X-ray imaging, and the width should be able to cover the entire protection range. The gel is injected into the space formed by the balloon 2 through the injection hole to shape the gel, so that the gel uniformly and comprehensively separates the prostate and rectum by a sufficient space.
[0032] As preferred in this embodiment, as shown in Figure 1 The depth of the balloon 2 front end inverted into the balloon 2 accounts for 1 / 3-1 / 2 of the entire balloon 2.
[0033] Specifically, as another optional embodiment in this embodiment, as shown in Figure 2 The balloon 2 is C-shaped as a whole to form the forming cavity 21 at the front end of the balloon 2.
[0034] When the balloon 2 is in the rectum, the forming cavity 21 is used to assist the shaping of the gel in the cavity space.
[0035] In this embodiment, the balloon 2 is directly made into a C shape to obtain the forming cavity 21, and at this time the front end of the catheter 1 is flush with the inner wall of the forming cavity 21.
[0036] The width of the forming cavity 21 should be able to cover the prostate range, and the gel is injected into the range supported by the balloon 2 through the injection hole. At the same time, the C-shaped structure can better assist the gel filling to obtain a larger support distance and more effectively protect the rectum.
[0037] The balloon catheter in this embodiment, through the forming cavity 21 obtained at the front end of the balloon 2, can provide a filling space for the shaping of the gel when the rectum and the prostate are expanded, assist the gel to be fully and uniformly filled between the prostate and the rectum, and ensure that the prostate and the rectum have a sufficient isolation height and range after the gel is filled, and have a good controllable isolation effect during radiotherapy.
[0038] The use method of the implanted gel auxiliary balloon catheter is as follows:
[0039] Using puncture needles, sheaths and other auxiliary instruments, a channel to the rectum and prostate fascial space is first established in the perineum, and the folded balloon catheter is then introduced into the space between the prostate and the rectum through the sheath.
[0040] Under ultrasonic or X-ray observation, the distal end of the balloon 2 should be at the head of the prostate, the balloon 2 is filled through the liquid injection hole outside the body, the height of the balloon 2 is adjusted, the position of the balloon 2 is adjusted, and the forming cavity 21 is formed after the balloon is inflated and expanded.
[0041] The gel is injected through the glue injection hole, the gel aggregation shape is observed under ultrasonic or ray, the balloon 2 is withdrawn, the gel is injected to fill the forming cavity 21, until the prostate is completely blocked with the support, and the balloon 2 is withdrawn to suture the wound, the auxiliary gel is formed between the prostate and the rectum, and enough isolation space is formed between the prostate and the rectum during radiotherapy, so that the rectum is protected from radiation damage.
[0042] The balloon expansion principle is utilized to preform a gel filling space between the prostate and the rectum, the balloon 2 is slowly withdrawn while the gel is injected, the gel is injected into the space formed in the middle, so that the prostate and the rectum are uniformly, accurately and comprehensively isolated, and better protection is achieved during prostate radiotherapy.
[0043] The gel mentioned in the embodiment is cross-linked sodium hyaluronate gel or other polymer gel used for isolation and protection of brachytherapy, and the gel is a product in the prior art.
[0044] In the present application, each device (parts not specifically described) is a general standard part or a part known to those skilled in the art, and the structure and principle thereof can be known by those skilled in the art through a technical manual or through a conventional experimental method.
[0045] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0046] In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0047] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. The described device embodiments are merely schematic, for example, the division of the units is only a logical function division, and there can be another division manner in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.
[0048] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.
[0049] In addition, each functional unit in the various embodiments of the present application can be integrated into one processing unit, or each unit can exist physically, or two or more units can be integrated into one unit.
[0050] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the present application. The technical scope of the present application is not limited to the contents in the specification, and must be determined according to the scope of claims.
Claims
1. An implantable gel-based adjunctive balloon catheter, characterized by, The catheter (1) is a double-lumen tube, one lumen is for injecting liquid and the other is for injecting gel; The balloon (2) is provided with a shaped cavity (21) at the front end for assisting gel filling, the balloon (2) is arranged at the front end of the catheter (1), the liquid injection lumen outlet is communicated with the balloon (2) inner cavity, and the gel injection lumen outlet is communicated with the shaped cavity (21).
2. The implanting gel-assisted balloon catheter according to claim 1, wherein the front end of the balloon (2) is inverted into the balloon (2) and welded and sealed between the outer wall of the front end of the balloon (2) and the catheter (1) to form a shaped cavity (21) in the inverted form at the front end of the balloon (2), and the catheter (1) extends into the shaped cavity (21).
3. The implanting gel-assisted balloon catheter according to claim 2, wherein the depth of the front end of the balloon (2) inverted into the balloon (2) accounts for 1 / 3-1 / 2 of the whole balloon (2).
4. The implanting gel-assisted balloon catheter according to claim 1, wherein the whole balloon (2) is in the shape of C to form a shaped cavity (21) in the shape of C at the front end of the balloon (2).