Balloon catheter assembly used in cooperation with uterine cavity repair material

Abstract

The utility model relates to a balloon catheter assembly used for being matched with a uterine cavity repair material, which is applied to the technical field of medical products and solves the problem that the existing balloon catheter assembly possibly has the situation that the repair material falls off even if the repair material is successfully put into the uterus, and the repair effect is influenced. A filling valve communicated with the first chamber is arranged at the near end of the catheter I; the expandable balloon is arranged at the far end of the catheter I, the balloon and the catheter I are concentrically arranged, a through hole communicated with the first cavity is formed in the position, located in the balloon, of the catheter I, and the transverse outer diameter of the balloon in the expansion state is larger than the longitudinal outer diameter of the balloon in the expansion state; one end of the guide pipe II is connected to the filling valve through an outer joint; the balloon has the effects of avoiding embarrassment of a patient and a doctor, not influencing normal activities of the patient, effectively blocking, reducing complication risks caused by leakage, explosion, large-area tissue extrusion and the like of a large-size balloon and remarkably relieving foreign body sensation after the balloon is indwelling in the body of the patient.

Description

Technical Field

[0001] The utility model is applied in the technical field of medical products, and particularly relates to a balloon catheter component used in conjunction with uterine cavity repair materials. Background Art

[0002] As an emerging biomedical product, uterine cavity repair materials have the functions of preventing uterine cavity adhesions, guiding uterine cavity tissue regeneration, and restoring the normal physiological structure and function of uterine cavity tissues. It is one of the cutting-edge technologies in the current reproductive medical field and a product that has been urgently needed in clinical practice. It can effectively avoid the various sequelae caused by hysteroscopic resection of intrauterine adhesions (TCRA), the standard surgical procedure for treating intrauterine adhesions.

[0003] According to the characteristics of human body structure, even if the repair material is successfully placed in the uterus, it may still fall off, affecting the repair effect (the repair time is generally 7-14 days). Therefore, it is necessary to provide a balloon catheter assembly for use with uterine cavity repair materials to solve the existing problems. Utility Model Content

[0004] The utility model aims to provide a balloon catheter assembly for use with uterine cavity repair materials, which solves the existing problem that even after the repair materials are successfully placed in the uterus, they may still fall off, thus affecting the repair effect.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a balloon catheter assembly for use with uterine cavity repair materials, comprising:

[0007] A catheter I having a first chamber, wherein a filling valve communicating with the first chamber is disposed at a proximal end of the catheter I;

[0008] An expandable balloon disposed at the distal end of the catheter I, the balloon being disposed concentrically with the catheter I, the catheter I being provided with a through hole communicating with the first chamber at a position located inside the balloon, and the balloon (5) having a transverse outer diameter greater than a longitudinal outer diameter in an expanded state;

[0009] A hollow conduit II, one end of which is connected to the filling valve via an external connector.

[0010] Furthermore, a second chamber is provided in the catheter I, and the second chamber is located on one side of the first chamber and is coaxially arranged with the catheter I.

[0011] Furthermore, the outer diameter D1 of the catheter I is 3.6 mm to 7.2 mm, the inner diameter D2 of the first chamber is 0.5 mm to 1.0 mm; and the inner diameter D3 of the second chamber is 3.0 mm to 6.0 mm.

[0012] Furthermore, a tip is provided at the distal end of the catheter I, and the outer surface of the tip is an arc-shaped surface.

[0013] Furthermore, the thickness H of the balloon before expansion is 0.2 mm to 0.8 mm.

[0014] Furthermore, a marking band is provided on the outer surface of the catheter I, and the marking band is located between the balloon and the filling valve and close to the balloon.

[0015] Furthermore, the other end of the catheter II is provided with a needle-free connector.

[0016] Furthermore, the catheter I, the balloon and the tip are all made of medical grade silicone, the filling valve is made of medical grade polycarbonate, the catheter II is made of medical grade polyvinyl chloride, and the external connector and needle-free connector are both made of polycarbonate.

[0017] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] The utility model discloses a balloon catheter assembly for use with uterine cavity repair materials. By arranging a catheter II at the proximal end of a catheter I, the overall length of the catheter assembly can be extended, thereby increasing the safe distance when the physician operates and avoiding embarrassment between the patient and the physician. At the same time, the catheter assembly can be directly placed in the patient's body without affecting the patient's normal activities, and has good clinical application value.

[0019] When not filled, the balloon is tightly attached to the distal end of the catheter, that is, the outer diameter of the balloon is consistent with that of the catheter, and there is basically no step at the overlap. When the volume is lower than the balloon burst volume, no matter how much liquid is filled, the inflated balloon is symmetrical with respect to the catheter body, and the lateral and longitudinal outer diameters of the balloon can always be expanded in equal proportion, maintaining a 2:1 ratio, that is, a "flat persimmon" shaped structure. This structure allows the filled balloon to have a certain outer diameter range even when the volume is greatly reduced, effectively blocking while reducing the risk of complications caused by large-volume balloon leakage, bursting, and large-area squeezing of tissues, and significantly reducing the foreign body sensation after being placed in the patient's body. At the same time, this structure does not sacrifice the important indicator of the balloon burst volume, and safety performance can be well guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the preferred embodiment of the utility model;

[0022] Figure 2 It is an enlarged structural diagram of the distal balloon of catheter I in the preferred embodiment of the utility model in the expanded state;

[0023] Figure 3 It is a cross-sectional view of the structure of the catheter I in the preferred embodiment of the utility model;

[0024] Figure 4 yes Figure 3 End view at AA in the middle.

[0025] The reference numerals are described as follows:

[0026] 1. First chamber; 2. Catheter I; 3. Filling valve; 4. Second chamber; 5. Balloon; 6. Through hole; 7. Catheter II; 8. External connector; 9. Needleless connector; 10. Terminal; 11. Marking band. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] refer to Figure 1-Figure 4, which is a balloon catheter assembly for use with uterine cavity repair materials provided in this example, comprising: a catheter Ⅰ2 having a first chamber 1, an expandable balloon 5 arranged at the distal end of the catheter Ⅰ2, and a hollow catheter Ⅱ7;

[0031] The first chamber 1 is eccentrically arranged with the catheter Ⅰ2, and a filling valve 3 communicating with the first chamber 1 is arranged at the proximal end of the catheter Ⅰ2; the catheter Ⅰ2 and the filling valve 3 are both made of medical silicone material, and a second chamber 4 is also arranged in the catheter Ⅰ2, and the second chamber 4 is located on one side of the first chamber 1 and is arranged coaxially with the catheter Ⅰ2, wherein the outer diameter D1 of the catheter Ⅰ2 is: 3.6mm~7.2mm, the inner diameter D2 of the first chamber 1 is: 0.5mm~1.0mm; the inner diameter D3 of the second chamber 4 is: 3.0mm~6.0mm; in this example, the outer diameter D1 of the catheter Ⅰ2 is 6.6mm, the length of the catheter Ⅰ2 is 10cm, the inner diameter D2 of the first chamber 1 is 0.8mm, and the inner diameter D3 of the second chamber 4 is 5.6mm;

[0032] The balloon 5 is concentrically arranged with the catheter Ⅰ2. The balloon 5 is also made of medical silicone material. Before the balloon 5 is expanded, it is in a hollow circular tube shape with a length of 6mm~12mm and a thickness of 0.2mm~0.8mm. The catheter Ⅰ2 is provided with a through hole 6 connected to the first chamber 1 at a position inside the balloon 5. When the balloon 4 is expanded, its transverse outer diameter is greater than its longitudinal outer diameter. In this example, when the balloon 4 is expanded, its transverse outer diameter L1 and longitudinal outer diameter L2 have a ratio of 2:1;

[0033] One end of the catheter II 7 is connected to the filling valve 3 through an external connector 8, and the other end of the catheter II 7 is provided with a needleless connector 9. The catheter II 7 is made of medical grade polyvinyl chloride, and the external connector 8 and the needleless connector 9 are both made of polycarbonate.

[0034] refer to Figure 1-Figure 4 With regard to the setting of the structure of the catheter assembly, by setting a catheter II 7 at the proximal end of the catheter I 2, the overall length of the catheter assembly can be extended, the safe distance during the operation of the physician can be increased, and the embarrassment between the patient and the physician can be avoided; at the same time, the catheter assembly can be directly placed in the patient's body without affecting the patient's normal activities, and has good clinical application value;

[0035] The first chamber 1 provided in the catheter Ⅰ2 facilitates the filling of the guide balloon 5 with saline, so that the balloon 5 expands to the optimal state under the action of the saline, and the residual saline in the first chamber 1 is reduced; the second chamber 4 is provided to reduce the overall weight and hardness of the catheter Ⅰ2, and the softness of the catheter Ⅰ2 is ensured without affecting the application of the catheter assembly, so that the catheter Ⅰ2 is conveniently implanted into the patient's body and is not easy to damage the patient's body tissue;

[0036] The two ends of the balloon 5 are adhered and wrapped on the outer wall of the catheter Ⅰ2 by medical-grade glue, and the middle part is also tightly wrapped on the outer wall of the catheter Ⅰ2. At this time, the outer diameter of the balloon 5 is basically the same as the outer diameter of the catheter Ⅰ2, and there is basically no step at the overlapping position of the balloon 5 and the catheter Ⅰ2. When the catheter assembly is implanted into the patient's body, it is convenient to implant without foreign body sensation, and it also avoids scratching the patient's body tissue;

[0037] When the balloon 5 is filled with saline and expanded to a volume lower than the balloon bursting volume, no matter how much liquid is filled, the filled balloon 5 is symmetrical with respect to the catheter Ⅰ2, and the lateral and longitudinal outer diameters of the balloon 5 can always be expanded in equal proportion, maintaining a ratio of 2:1, that is, a "flat persimmon" shaped structure. This structure allows the filled balloon 5 to still have a certain outer diameter range when the volume is greatly reduced, effectively blocking while reducing the risk of complications caused by large-volume balloon leakage, bursting, large-area squeezing of tissues, etc., and significantly reducing the foreign body sensation after being placed in the patient's body. At the same time, this structure does not sacrifice the important indicator of the balloon 5 bursting volume, and the safety performance can be well guaranteed.

[0038] refer to Figure 1 The distal end of the catheter Ⅰ2 is provided with a tip 10, and the outer surface of the tip 10 is an arc-shaped smooth surface, and the catheter Ⅰ2 and the tip 10 are both made of medical grade silicone. The tip 10 with an arc surface facilitates the implantation of the catheter assembly into the patient's body, protects the patient, and is not easy to damage the patient's body tissue. The outer surface of the catheter Ⅰ2 is provided with a marking band 11, which reminds the physician of the distance of the catheter Ⅰ2 into the human body. When the marking band 11 completely enters the human body, the push is stopped, and then the filling operation is started.

[0039] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A balloon catheter assembly for use with uterine cavity repair materials, characterized in that: include: A catheter I (2) having a first chamber (1), wherein a filling valve (3) communicating with the first chamber (1) is provided at a proximal end of the catheter I (2); an expandable balloon (5) disposed at the distal end of the catheter I (2), the balloon (5) being disposed concentrically with the catheter I (2), the catheter I (2) being provided with a through hole (6) in communication with the first chamber (1) at a position located inside the balloon (5), and the balloon (5) having a transverse outer diameter greater than a longitudinal outer diameter in an expanded state; A hollow conduit II (7) is provided, one end of which is connected to the filling valve (3) via an external connector (8).

2. The balloon catheter assembly for use with uterine cavity repair material according to claim 1, characterized in that: A second chamber (4) is also provided in the conduit I (2). The second chamber (4) is located on one side of the first chamber (1) and is coaxially arranged with the conduit I (2).

3. The balloon catheter assembly for use with uterine cavity repair material according to claim 2, characterized in that: The outer diameter D1 of the catheter I (2) is 3.6 mm to 7.2 mm, the inner diameter D2 of the first chamber (1) is 0.5 mm to 1.0 mm, and the inner diameter D3 of the second chamber (4) is 3.0 mm to 6.0 mm.

4. The balloon catheter assembly for use with uterine cavity repair material according to any one of claims 1 to 3, characterized in that: The distal end of the catheter I (2) is provided with a tip (10), and the outer surface of the tip (10) is an arc-shaped smooth surface.

5. The balloon catheter assembly for use with uterine cavity repair material according to claim 4, characterized in that: The thickness H of the balloon (5) before expansion is 0.2 mm to 0.8 mm.

6. The balloon catheter assembly for use with uterine cavity repair material according to claim 4, characterized in that: The outer surface of the catheter I (2) is provided with a marking band (11), and the marking band (11) is located between the balloon (5) and the filling valve (3) and close to the balloon (5).

7. The balloon catheter assembly for use with uterine cavity repair material according to claim 4, characterized in that: The other end of the catheter II (7) is provided with a needle-free connector (9).

8. The balloon catheter assembly for use with uterine cavity repair material according to any one of claims 5 to 7, characterized in that: The catheter I (2), the balloon (5) and the tip (10) are all made of medical grade silicone, the filling valve (3) is made of medical grade polycarbonate, the catheter II (7) is made of medical grade polyvinyl chloride, and the external connector (8) and the needleless connector (9) are all made of polycarbonate.

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