Balloon type uterine cavity stent

Abstract

The utility model discloses an air bag type uterine cavity support, one end of uterine support main part is connected with the connecting pipe, the airtight gasket is fixedly connected in the connecting pipe, the outer end of connecting pipe is with outer tube virtual welding connection, the outer tube is connected with the sliding block of sliding, the push pipe is connected with the sliding sleeve in the outer tube, the push pipe one end is with airtight gasket and touches connection, the push pipe is connected with the needle tube of sliding sleeve, the needle tube one end punctures airtight gasket and is linked with the air bag of uterine support main part, the needle tube is fixedly connected with needle tube positioning block, needle tube positioning block and push pipe outer end port touch, the needle tube outer end is connected with check valve. The utility model aims at providing a kind of uterine cavity support that is inflated and fixed by air bag, to improve support stability, place accuracy, and reduce air bag type uterine cavity support of uterine cavity wall damage.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a balloon-type uterine stent. Background Technology

[0002] Endometrial lesions are a common gynecological condition, with a high incidence rate, especially among women of reproductive age. Diagnosis and treatment of lesions such as endometrial hyperplasia, endometrial polyps, and endometrial cancer require hysteroscopy and corresponding treatment methods. Intrauterine stents, as an auxiliary device, are widely used in intrauterine surgeries and postoperative recovery. Their main functions are to maintain the shape of the uterine cavity, prevent postoperative intrauterine adhesions, and promote endometrial repair.

[0003] Traditional intrauterine stents are typically made of rigid materials. While they can provide some support and prevent adhesions, they have several drawbacks. First, rigid stents can easily damage the uterine wall during placement, increasing the risk of postoperative infection and adhesions. Second, rigid stents lack flexibility and are difficult to adapt to different uterine cavity shapes, making them prone to displacement or dislodgement during placement, affecting treatment outcomes. Furthermore, the placement process of traditional stents is complex, requiring doctors with extensive experience and skill; otherwise, it can not only affect placement accuracy but also prolong the procedure, increasing patient discomfort and surgical risks.

[0004] To address these issues, various improved intrauterine stents have emerged in recent years, including stents made of soft materials. These stents have improved flexibility and adaptability to some extent, reducing damage to the uterine wall, but problems remain such as difficulty in placement and the stent's tendency to deform or fold. Therefore, developing a new, safer, and easier-to-operate intrauterine stent has become an urgent technical challenge.

[0005] This invention provides a balloon-type intrauterine stent. By incorporating a balloon at the stent's edge and inflating it, the stent can be deployed and fixed, solving the problems of traditional stents being prone to folding, deformation, and displacement during placement. This stent is not only made of soft material, effectively preventing damage to the uterine wall, but also enhances its stability and support through inflation, improving the accuracy of placement and ease of operation, thus possessing significant clinical application value. Utility Model Content

[0006] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a balloon-type uterine stent that is deployed and fixed by inflating a balloon, so as to improve the stability and placement accuracy of the stent and reduce damage to the uterine wall.

[0007] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a balloon-type uterine stent, comprising a uterine stent body, an outer tube, a slider, a push tube, an airtight gasket, a needle tube, a needle tube positioning block, and a check valve. One end of the uterine stent body is connected to a connecting tube, and an airtight gasket is fixedly connected inside the connecting tube. The airtight gasket is made of soft silicone and, after being fixed to the inside of the connecting tube, forms a sealed space for the balloon of the uterine stent body. The outer end of the connecting tube is loosely welded to the outer tube. When the rated external force is exceeded, the outer tube and the connecting tube can be disconnected along the loose weld. A slider is slidably connected to the outer tube, and a push tube is slidably connected inside the outer tube. One end of the push tube is in contact with the airtight gasket. By pushing the push tube, the outer tube and the connecting tube can be disconnected. The sliding sleeve is connected to a needle tube, one end of which is a spike that can pierce the airtight gasket and connect to the airbag of the uterine stent body for inflation. After the needle tube is removed, the airbag will not leak air due to the puncture of the airtight gasket. A needle tube positioning block is fixedly connected to the needle tube, which abuts against the outer end of the push tube. The needle tube positioning block can limit the advancement distance of the needle tube, so that the spike of the needle tube just pierces the airtight gasket without damaging the uterine stent body. The outer end of the needle tube is connected to a check valve. After the stent is inflated, when making fine adjustments to its position, the check valve can prevent air from leaking out of the uterine stent body. After placement, the pressure relief valve can be opened to release the airbag pressure and allow the uterine stent body to return to its normal state.

[0008] In one embodiment, the uterine stent body is made of soft silicone material, and an air bladder is provided around the edge of the uterine stent body. By inflating the air bladder, the strength of the uterine stent body can be increased, avoiding twisting or folding of the uterine stent body during placement and fine-tuning of its position. After the uterine stent body is placed, the internal pressure of the air bladder is released, and the uterine stent body returns to its normal state, making it fit the uterine cavity more closely.

[0009] In one embodiment, the outer tube on one side of the uterine stent body is marked with graduation lines.

[0010] In one embodiment, both the outer tube and the push tube are made of PVC, and the length of the push tube is greater than the length of the outer tube.

[0011] In one embodiment, the needle is made of stainless steel, and a syringe is connected to one end of the check valve connected to the needle.

[0012] The beneficial effects of this utility model are:

[0013] 1. Avoid damage to the uterine cavity wall:

[0014] The main body of the uterine stent is made of soft silicone material, which is more flexible than traditional rigid stents. It can better adapt to the shape of the uterine cavity during placement, effectively avoiding mechanical damage to the uterine cavity wall and reducing the risk of postoperative infection and adhesion.

[0015] 2. Enhance stent stability:

[0016] The air balloon at the edge of the stent enhances its support strength through inflation, enabling the stent to maintain its shape more stably in the uterine cavity. This avoids the problems of traditional stents being prone to folding, deformation, or displacement due to insufficient flexibility, thus improving postoperative outcomes.

[0017] 3. Improve placement accuracy:

[0018] The slider design on the outer tube allows for adjustment of the stent position based on the distance to the fundus, enabling more precise placement. At the same time, the stent is deployed by inflating a balloon, making the placement process more controllable, reducing reliance on the doctor's experience and skills, and lowering the difficulty of placement.

[0019] 4. Simplify the operation process:

[0020] The entire placement process is rationally designed and performed in steps, making it easy for doctors to operate. By using a push tube and a needle in combination, the airtight gasket can be accurately punctured and inflated. After the stent is deployed, only simple minor adjustments are needed to complete the placement, greatly simplifying the operation process, shortening the operation time, and reducing the patient's pain.

[0021] 5. Prevent air from escaping:

[0022] The check valve design ensures that air will not leak out after the balloon is inflated, keeping the stent in its deployed state and allowing it to provide stable and long-lasting support within the uterine cavity, thus improving the stent's reliability.

[0023] 6. Multiple safety features:

[0024] The connecting tube and the outer tube are connected by a loose weld, which can automatically disconnect under the rated external force to avoid the stent position displacement or damage caused by accident. At the same time, the positioning block limits the needle advance distance to prevent damage to the uterine stent body, further improving the safety of operation.

[0025] In summary, the balloon-type intrauterine stent of this invention, through its reasonable structural design and operating procedure, significantly improves the stability of the stent within the uterine cavity and the accuracy of its placement, reduces damage to the uterine wall, and simplifies the operating steps, thus possessing significant clinical application value. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic cross-sectional view of the connection point of the main body of the uterine support of this utility model;

[0028] Figure 3 This is a schematic diagram of the usage process of this utility model.

[0029] In the diagram: 1. Uterine stent body, 2. External tube, 3. Slider, 4. Push tube, 5. Airtight pad, 6. Needle tube, 7. Needle tube positioning block, 8. Check valve, 9. Connecting tube. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-3 A balloon-type uterine stent includes a uterine stent body 1, an outer tube 2, a slider 3, a push tube 4, an airtight gasket 5, a needle tube 6, a needle tube positioning block 7, and a check valve 8. One end of the uterine stent body 1 is connected to a connecting tube 9, and an airtight gasket 5, made of soft silicone, is fixedly connected inside the connecting tube 9, creating a sealed space for the balloon of the uterine stent body 1. The outer end of the connecting tube 9 is loosely welded to the outer tube 2. When the rated external force is exceeded, the outer tube 2 and the connecting tube 9 can be disconnected along the loose weld. A slider 3 is slidably connected to the outer tube 2, and a push tube 4 is connected to the inner sleeve of the outer tube 2. One end of the push tube 4 is in contact with the airtight gasket 5. By pushing the push tube 4, the outer tube 2 and the connecting tube 9 can be disconnected. A needle tube 6 is connected to the inner sleeve of the push tube 4. One end of the tube 6 is a spike that can pierce the airtight gasket 5 and connect to the airbag of the uterine stent body 1 for inflating the airbag. After the tube 6 is pulled out, the airbag will not leak air due to the airtight gasket 5 being pierced by the tube 6. A tube positioning block 7 is fixedly connected to the tube 6. The tube positioning block 7 abuts against the outer end of the push tube 4. The tube positioning block 7 can limit the advancement distance of the tube 6 so that the spike of the tube 6 can just pierce the airtight gasket 5 without damaging the uterine stent body 1. The outer end of the tube 6 is connected to the check valve 8. After the stent is inflated, when making fine adjustments to its position, the check valve 8 can prevent air from leaking out of the uterine stent body 1. After placement, the pressure can be released by opening the pressure relief valve to restore the uterine stent body 1 to its normal state.

[0032] In one embodiment, the uterine stent body 1 is made of soft silicone. An air bladder is provided around the edge of the uterine stent body 1. By inflating the air bladder, the strength of the uterine stent body 1 can be increased, avoiding twisting or folding of the uterine stent body during placement and position fine-tuning. After the uterine stent body is placed, the internal pressure of the air bladder is released, and the uterine stent body returns to its normal state, making it fit the uterine cavity more closely.

[0033] In one embodiment, the outer tube 2 on one side of the uterine stent body 1 is marked with scale lines.

[0034] In one embodiment, both the outer tube 2 and the push tube 4 are made of PVC, and the length of the push tube 4 is greater than the length of the outer tube 2.

[0035] In one embodiment, the needle tube 6 is made of stainless steel, and one end of the check valve 8 connected to the needle tube 6 is connected to a syringe.

[0036] In this utility model, the usage process of the balloon-type intrauterine stent is as follows:

[0037] 1. Measure the fundal distance;

[0038] 2. Based on the measured fundal distance, adjust the position of the slider 3 on the outer tube 2 so that the distance from the end of the uterine support body 1 to the slider 3 is the same as the fundal distance;

[0039] 3. Place the main body of the uterine stent 1 into the uterine cavity (at this time, the main body of the uterine stent 1 cannot be fully extended);

[0040] 4. Insert the push tube 4 into the outer tube 2 and push the push tube 4 so that one end of the push tube 4 contacts the airtight gasket 5;

[0041] 5. Insert the spike of the needle tube 6 into the push tube 4 and push the needle tube 6 until the needle tube positioning block 7 contacts the push tube 4. At this time, the spike at one end of the needle tube 6 just pierces the airtight gasket 5 and extends into the connecting tube 9.

[0042] 6. The outer end of the check valve 8 is connected to a syringe. A fixed amount of air is injected into the uterine stent body 1 through the syringe to inflate the airbag on the uterine stent body 1, so that the uterine stent body 1 is fully deployed in the uterus.

[0043] 7. With the aid of an endoscope, adjust the position of the stent according to the actual effect, complete the stent placement, release the pressure through the check valve 8, restore the stent to its normal state, and remove the needle tube 6.

[0044] 8. Fix the push tube 4, pull the outer tube 2 outward to disconnect the connecting tube 9 and the outer tube 2 at the loose connection point, and finally pull out the push tube 4 to complete the placement operation of the uterine stent body 1.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A balloon-type uterine stent, comprising a uterine stent body (1), an outer tube (2), a slider (3), a push tube (4), an airtight gasket (5), a needle tube (6), a needle tube positioning block (7), and a check valve (8), characterized in that: One end of the uterine support body (1) is connected to a connecting tube (9), and an airtight gasket (5) is fixedly connected inside the connecting tube (9). The outer end of the connecting tube (9) is loosely welded to the outer tube (2). A slider (3) is slidably connected to the outer tube (2). A push tube (4) is connected to the outer tube (2) via a sliding sleeve. One end of the push tube (4) is in contact with the airtight gasket (5). A needle tube (6) is connected to the push tube (4) via a sliding sleeve. One end of the needle tube (6) punctures the airtight gasket (5) and communicates with the airbag of the uterine support body (1). A needle tube positioning block (7) is fixedly connected to the needle tube (6). The needle tube positioning block (7) is in contact with the outer end of the push tube (4). The outer end of the needle tube (6) is connected to a check valve (8).

2. The balloon-type uterine stent according to claim 1, characterized in that: The uterine support body (1) is made of soft silicone, and an airbag is provided around the edge of the uterine support body (1).

3. The balloon-type uterine stent according to claim 1, characterized in that: The outer tube (2) on one side of the uterine support body (1) is marked with scale lines.

4. The balloon-type uterine stent according to claim 1, characterized in that: Both the outer tube (2) and the push tube (4) are made of PVC, and the length of the push tube (4) is greater than the length of the outer tube (2).

5. A balloon-type uterine stent according to claim 1, characterized in that: The needle tube (6) is made of stainless steel, and a syringe is connected to one end of the check valve (8) connected to the needle tube (6).

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