Balloon for treating frozen shoulder by directionally expanding articular cavity under ultrasound

Abstract

The utility model relates to the technical field of medical treatment, and provides a balloon for treating a frozen shoulder by directionally expanding an articular cavity under ultrasound, which comprises a puncture guide needle, a first balloon main body and a second balloon main body, the first balloon and the second balloon are designed, the first balloon is used for expanding a thickened articular cavity, and the second balloon is used for expanding the articular cavity. The design and the size of the balloon are different from those of the first balloon, so that the balloon can be accurately matched with different parts, and effective dilation is achieved. In the aspect of design of the puncture guide needle, two needle stem design schemes are provided, the needle stem is made of a fiber soft lens material or provided with a movable joint to achieve a bending function, and the front end of the needle stem can be subjected to arc molding, so that the guide needle can enter an articular cavity conveniently, the risk of damage to surrounding tissues is greatly reduced, and treatment safety is guaranteed. According to the internal structural design of the guide needle, pipelines with different functions are arranged and comprise the two balloon inflation cavities with different lengths and the medicine injection cavity, all the pipelines are clear in division of labor, and inflation operation of the balloon and supply of medicine liquid are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, and in particular to a balloon for treating frozen shoulder by ultrasound-guided directional expansion of the joint cavity. Background Technology

[0002] Adhesive capsulitis (AC) typically involves the glenohumeral joint capsule, with its main pathological basis being fibrosis and thickening of the joint capsule. Imaging findings often show capsular contracture and reduced joint volume. Current treatments for AC include analgesia, physical therapy, intra-articular injections, release under anesthesia, and arthroscopic release. Ultrasound-guided intra-articular injection of corticosteroids can alleviate inflammation and pain within the joint cavity, and when combined with rehabilitation training, it often achieves good clinical results. Rehabilitation training can also be performed under ultrasound monitoring. Utilizing the advantages of dynamic ultrasound assessment, doctors can monitor the morphology and thickness of the joint capsule in real time, thereby determining the effective position for posterior capsular stretching. Ultrasound-guided intra-articular injection of saline solution can also be used to hydraulically expand the contracted joint capsule, achieving the therapeutic goal. Furthermore, recent studies have shown that ultrasound-guided extracapsular fasciolysis is an effective and minimally invasive treatment method. Researchers used saline solution to release thickened extracapsular fascia under ultrasound guidance and found that the improvement in range of motion after the procedure was not limited to external rotation, but also included flexion, extension, and abduction. This may be because the release of the fascia affects surrounding muscles, thus improving range of motion in all directions. Meanwhile, other studies have also explored the treatment of acute joint cancer (AC) using suprascapular nerve blocks, finding that a proximal approach via the omohyoid muscle to the suprascapular notch provides better exposure of the suprascapular nerve, thereby improving injection accuracy.

[0003] However, while the above methods have some feasibility and rationality, they also have some drawbacks. Ultrasound-guided intra-articular injection of corticosteroids has been proven to be effective in treating AC, but it requires rehabilitation training and is not suitable for patients with excessively thick axillary bursae, as it may damage the rotator cuff. Intra-articular injection of saline solution for physical expansion of the joint capsule or extra-capsular release cannot achieve targeted expansion of the joint capsule due to the gravitational effect of the fluid.

[0004] Therefore, this utility model patent proposes a balloon for treating frozen shoulder by directional expansion of the joint cavity under ultrasound to expand the joint cavity and loosen the joint capsule, so as to make up for the shortcomings of the above technologies. Utility Model Content

[0005] The purpose of this invention is to provide a balloon for treating frozen shoulder by directional expansion of the joint cavity under ultrasound guidance. By using this device, the above-mentioned problems can be solved.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a balloon for ultrasound-guided directional expansion of the joint cavity to treat frozen shoulder, comprising a puncture guide needle, a first balloon body, and a second balloon body. The first balloon body is disposed on the outer side of the top of the puncture guide needle, and the second balloon body is disposed on the outer side of the bottom of the puncture guide needle. The second balloon body is located below the first balloon body. The side wall of the top of the puncture guide needle has a first balloon inflation port, which is connected to the interior of the first balloon body. The side wall of the bottom of the puncture guide needle has a second balloon inflation port, which is connected to the interior of the second balloon body. A drug injection chamber is disposed in the middle of the interior of the puncture guide needle. A second balloon inflation chamber is disposed on the left side of the interior of the puncture guide needle, which is connected to the second balloon inflation port. A first balloon inflation chamber is disposed on the right side of the interior of the puncture guide needle, which is connected to the first balloon inflation port.

[0007] Preferably, the length of the inflation chamber of the first balloon is greater than the length of the inflation chamber of the second balloon, and the second balloon has two inflation ports.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. This utility model provides a balloon for ultrasound-guided targeted expansion of the joint cavity to treat frozen shoulder. It features two balloons with different functions: a primary balloon body and a secondary balloon body. The primary balloon body is used to expand the thickened joint capsule, while the secondary balloon body is used to expand the glenohumeral joint cavity. The secondary balloon body has a different design and size than the primary balloon body and includes two inflation ports. These different balloons target different areas, better adapting to the characteristics of the joint capsule and joint cavity, achieving precise and effective expansion of different areas to meet treatment needs.

[0010] 2. This utility model provides a balloon for ultrasound-guided directional expansion of the joint cavity to treat frozen shoulder. It employs two design schemes for the puncture guide needle shaft: one where the needle shaft is made of a flexible fiber optic material allowing for bending; and another where the needle shaft has a movable joint for bending. Furthermore, the tip of the puncture guide needle can be precisely shaped to conform to the curvature of the joint cavity, ensuring smooth entry and adaptation to its shape. This reduces the risk of damage to surrounding blood vessels and nerves, improves the accuracy and safety of the puncture, and ultimately guarantees the smooth progress of the entire treatment process.

[0011] 3. This utility model provides a balloon for ultrasound-guided directional expansion of the joint cavity to treat frozen shoulder. It features different functional channels inside the guide needle, which has two blind tubes: a shorter one serving as the second balloon inflation chamber with two second balloon inflation ports, and a longer one serving as the first balloon inflation chamber. A separate medication injection chamber is also provided for supplying medication. Each channel performs its specific function, facilitating the inflation of different balloons and the delivery of medication, making the procedure more orderly and efficient, and improving treatment outcomes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the balloon in the uninflated state of this utility model;

[0013] Figure 2 This is a front structural sectional view of the present invention;

[0014] Figure 3 This is a schematic diagram of the balloon in the inflated state of this utility model.

[0015] Figure 4 This is a schematic diagram of the bending structure of the puncture guide needle of this utility model.

[0016] The following are the labels in the attached diagram: 1. Puncture guide needle; 11. Injection chamber; 2. Balloon body No. 1; 21. Balloon inflation port No. 1; 22. Balloon inflation chamber No. 1; 3. Balloon body No. 2; 31. Balloon inflation port No. 2; 32. Balloon inflation chamber No. 2. Detailed Implementation

[0017] 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.

[0018] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0019] Combination Figures 1 to 4As shown, this utility model discloses a balloon for ultrasound-guided directional expansion of the joint cavity to treat frozen shoulder, comprising a puncture guide needle 1, a first balloon body 2, and a second balloon body 3. The first balloon body 2 is disposed on the outer side of the top of the puncture guide needle 1, and the second balloon body 3 is disposed on the outer side of the bottom of the puncture guide needle 1. The second balloon body 3 is located below the first balloon body 2. A first balloon inflation port 21 is formed on the side wall of the top of the puncture guide needle 1, and the first balloon inflation port 21 is connected to the interior of the first balloon body 2. The puncture guide needle 1 has a second balloon inflation port 31 on the side wall at the bottom, which is connected to the interior of the second balloon body 3. The puncture guide needle 1 has a drug injection chamber 11 in the middle position inside, and a second balloon inflation chamber 32 is opened on the left side inside the puncture guide needle 1. The second balloon inflation chamber 32 is connected to the second balloon inflation port 31. The puncture guide needle 1 has a first balloon inflation chamber 22 on the right side inside, which is connected to the first balloon inflation port 21.

[0020] Preferably, the length of the first balloon inflation chamber 22 is greater than the length of the second balloon inflation chamber 32, and the second balloon inflation port 31 is provided with two ports.

[0021] Working principle:

[0022] First, the ultrasound device is precisely placed in the patient's armpit area. By adjusting the angle and depth of the ultrasound probe, the structure of the axillary sac and shoulder joint cavity is clearly displayed.

[0023] Next, using a specially designed puncture guide needle 1, the axillary sac is accurately punctured through an axillary approach. Under real-time ultrasound guidance, the puncture guide needle 1 is ensured to advance along the predetermined path, avoiding damage to surrounding blood vessels and nerves;

[0024] Once the puncture guide needle 1 successfully enters the axillary sac, the thickened axillary sac is expanded using the No. 1 balloon body 2. An appropriate amount of liquid or gas is injected into the No. 1 balloon body 2 through the No. 1 balloon inflation chamber 22 and the No. 1 balloon inflation port 21, causing it to gradually inflate and apply uniform pressure, thereby effectively expanding the axillary sac. Similarly, other parts of the joint capsule can be expanded to ensure that the entire joint capsule is fully expanded.

[0025] After dilating the axillary bursa and other parts of the joint capsule, the guide needle 1 is inserted further into the glenohumeral joint cavity. During this process, the tip of the guide needle 1 should be precisely shaped to conform to the curvature of the joint cavity. Two methods are provided below:

[0026] 1. The needle tip of the puncture guide needle 1 is made of stainless steel, and the needle shaft is made of fiber flexible endoscope material, which can achieve bending function;

[0027] 2. The needle tip of the puncture guide needle 1 is made of stainless steel, and the needle shaft is equipped with a movable joint, which can achieve bending function.

[0028] To ensure it can smoothly enter and adapt to the shape of the joint cavity, the puncture guide needle 1 is bent as follows: Figure 4 As shown.

[0029] After entering the joint cavity, the second balloon body 3 is used to expand the glenohumeral joint cavity. The design and size of the second balloon body 3 differ from that of the first balloon body 2. The second balloon body 3 has two second balloon inflation ports 31 to better adapt to the characteristics of the joint cavity. Similarly, liquid or gas is injected into the second balloon body 3 through the second balloon inflation chamber 32 and the second balloon inflation ports 31, causing it to inflate and apply pressure, thereby effectively expanding the joint cavity.

[0030] Throughout the procedure, the ultrasound equipment provides real-time guidance and monitoring, ensuring the accuracy and safety of each step. Furthermore, this technology allows for adjustment of parameters such as balloon size, pressure, and dilation time to suit the specific needs and conditions of different patients.

[0031] It should be noted that the guide needle has two blind tubes inside. The shorter one is the second balloon inflation chamber 32, which has two second balloon inflation ports 31. The longer one is the first balloon inflation chamber 22. The drug injection chamber 11 is used for drug supply.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A balloon for ultrasound-guided directional expansion of the joint cavity to treat frozen shoulder, comprising a puncture guide needle (1), a first balloon body (2), and a second balloon body (3), characterized in that: A first balloon body (2) is provided on the outer side of the top of the puncture guide needle (1), and a second balloon body (3) is provided on the outer side of the bottom of the puncture guide needle (1). The second balloon body (3) is located below the first balloon body (2). A first balloon inflation port (21) is opened on the side wall of the top of the puncture guide needle (1). The first balloon inflation port (21) is connected to the interior of the first balloon body (2). A second balloon inflation port (31) is opened on the side wall of the bottom of the puncture guide needle (1). The balloon inflation port (31) is connected to the interior of the second balloon body (3). A drug injection chamber (11) is provided in the middle of the puncture guide needle (1). A second balloon inflation chamber (32) is provided on the left side of the puncture guide needle (1). The second balloon inflation chamber (32) is connected to the second balloon inflation port (31). A first balloon inflation chamber (22) is provided on the right side of the puncture guide needle (1). The first balloon inflation chamber (22) is connected to the first balloon inflation port (21).

2. The balloon for ultrasound-guided directional expansion of the joint cavity for treating frozen shoulder according to claim 1, characterized in that: The length of the first balloon inflation chamber (22) is greater than the length of the second balloon inflation chamber (32), and the second balloon inflation port (31) has two ports.

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