A hemostatic compression device for hemodialysis catheters

Abstract

This utility model belongs to the field of medical tools, specifically disclosing a hemostatic compression device for hemodialysis catheters, including a shawl, a compression airbag assembly fixed to the inside of the shawl, an air pump, and a pressure monitoring assembly. The compression airbag assembly includes at least two independent first and second airbags. The first airbag is a cylindrical, point-like compression airbag used to compress the internal jugular vein puncture site, and the second airbag is a long, rectangular, linear compression airbag used to comprehensively compress the subcutaneous tunnel. The two airbags are connected to the air pump connector via independent inflation tubes, and the connector contains a one-way valve. The shawl has a fixing and adjustment structure consisting of buckles and nylon hook and loop fasteners. This device achieves effective hemostasis at different bleeding sites after TCC catheter placement through a precise point-line compression method, replacing manual pressure. The hemostatic effect is clear and reliable, the operation is convenient, and the pressure is adjustable and controllable.

Description

Technical Field

[0001] This utility model belongs to the field of medical tools, specifically relating to a hemostatic compression device for a hemodialysis catheter. Background Technology

[0002] Tunneled central venous catheters (TCCs) with polyester sheaths are the primary dialysis access for hemodialysis patients who cannot establish arteriovenous fistulas or whose fistulas are not yet mature; they are the lifeline for hemodialysis patients. TCCs are placed in the internal jugular vein. During insertion, the internal jugular vein is first punctured with a needle, a guidewire is inserted, a subcutaneous tunnel is created, and finally, the TCC is inserted into the vein through the subcutaneous tunnel using a tear-off sheath. Because of the existing wound in the internal jugular vein and the need to create a subcutaneous tunnel during the procedure, some damage to the subcutaneous tissue is caused. Therefore, post-insertion bleeding is common after TCC placement. After the procedure, the doctor or family member should apply pressure to the local area for 20-30 minutes to stop the bleeding. If hemostasis is ineffective or the catheter is pulled and causes further bleeding, a longer compression time is required. This not only harms the patient's health but also consumes a lot of time, energy, and physical strength for the doctor and the patient's family.

[0003] Therefore, finding a device with a clear hemostatic effect that can replace manual pressure for hemostasis has become an urgent task. Utility Model Content

[0004] The purpose of this invention is to provide a hemostatic compression device for hemodialysis catheters to solve the problem of compression hemostasis after TCC insertion.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hemostatic compression device for a hemodialysis catheter, comprising:

[0007] shawl;

[0008] A compression airbag assembly fixed to the inside of the shawl, the compression airbag assembly comprising at least two independent first airbags and second airbags; the first airbag is a cylindrical dot-shaped compression airbag, and the second airbag is a long rectangular cuboid linear compression airbag.

[0009] air pump;

[0010] The first airbag and the second airbag are each connected to an independent inflation tube. One end of the inflation tube is sealed to the corresponding airbag, and the other end terminates at an air pump connector that can be connected to the air pump.

[0011] Furthermore, the air pump connector has a built-in one-way valve.

[0012] Furthermore, the shawl is a long strip or triangular flexible piece; the shawl is provided with a fixing and adjustment structure, which includes a buckle at one end of the shawl and a nylon hook and loop fastener on the shawl.

[0013] Furthermore, the shawl has a multi-layered composite structure, including a skin-friendly base layer, a breathable and waterproof middle layer, and an antibacterial and antistatic outer layer.

[0014] Furthermore, the first airbag and / or the second airbag are provided with a reinforcing rib structure inside.

[0015] Furthermore, it also includes a pressure monitoring component, which is a flexible thin-film pressure sensor array attached to the pressure surface of the airbag assembly.

[0016] Furthermore, the air pump integrates a pressure display device, which is electrically connected to the flexible thin-film pressure sensor array.

[0017] Furthermore, the reinforcing rib structure within the second airbag includes two main ribs, several secondary ribs connected to the main ribs, and connecting ribs connecting the corresponding secondary ribs on the top and bottom surfaces.

[0018] Furthermore, the second airbag is configured to provide a linear pressure band through its elongated compression surface for linear, comprehensive compression of the subcutaneous tunnel.

[0019] Furthermore, the buckle is a H-shaped adjusting buckle or a D-shaped ring.

[0020] The beneficial effects of this utility model are as follows:

[0021] By combining a cape-like fixation component and an airbag compression component, this method replaces the traditional manual pressure method for hemostasis, freeing medical staff and their families from heavy and time-consuming physical labor. By setting up independent point-compression and linear compression airbags, it can precisely target the internal jugular vein puncture site and the subcutaneous tunnel—two sites with completely different anatomical structures and bleeding characteristics—achieving precise hemostasis through a combination of point and line compression. This avoids pressure blind spots or uneven pressure caused by a single compression pad, fundamentally solving the problem of continuous compression throughout the subcutaneous tunnel. The two airbags are connected to independent inflation tubing, allowing medical staff to independently and precisely adjust the compression force according to the different physiological characteristics and bleeding conditions of the deep internal jugular vein puncture site and the superficial wound of the subcutaneous tunnel, achieving a personalized and optimized hemostasis plan.

[0022] The air pump connector features a built-in one-way valve, enabling automatic pressure maintenance after the airbag is inflated. The valve automatically closes when the air pump is removed, preventing gas leakage that could cause pressure drop and failure, thus ensuring the continuity and reliability of the hemostasis process and making operation more convenient.

[0023] Long or triangular shawl designs can better conform to the physiological curves from the shoulders to the chest and back, providing optimized coverage and fit.

[0024] The combination of buckles and nylon hook-and-loop fasteners enables a two-step fixation method, allowing for both initial wide-range adjustment and final stepless fine-tuning. This allows for quick donning and extremely precise tightness adjustment, ensuring the device remains stable and does not shift, while preventing the device from being too tight and affecting the patient's breathing or too loose and causing compression failure.

[0025] This multi-layered composite shawl combines functionality, safety, and comfort. A skin-friendly bottom layer enhances the wearing experience, a breathable and waterproof middle layer prevents infection by blocking bodily fluids while keeping the skin dry, and an antibacterial and antistatic outer layer improves the product's durability and hygiene safety in clinical settings.

[0026] By incorporating reinforcing ribs, the airbag maintains its stable shape after inflation, avoiding uneven pressure distribution and ensuring that its bottom surface functions as a single unit.

[0027] By introducing a flexible thin-film pressure sensor array, the actual pressure value of the airbag in contact with the skin can be measured directly and in real time. This elevates hemostasis from experience-based medicine that relies on personal touch to data-driven medicine that is visualized, providing objective data support for precise and safe hemostasis.

[0028] By integrating a pressure display device into the air pump and electrically connecting it to the sensor, a complete and intuitive feedback system is formed. Medical staff can directly read the real-time pressure value during inflation, facilitating quick and accurate pressure adjustment to the appropriate range, greatly improving the convenience and precision of operation.

[0029] The cylindrical end face of the first airbag forms a circular pressure surface that acts like a piston, concentrating and vertically transmitting pressure to the deep vein puncture point, achieving precise point-to-point occlusion of the puncture point to address deep vein bleeding.

[0030] The linear pressure band formed by the elongated compression surface of the second airbag can cover and compress the entire projection path of the subcutaneous tunnel on the body surface, applying comprehensive and uniform pressure to the loose connective tissue and potential bleeding points throughout the tunnel, solving the problem that manual pressure cannot cover the entire tunnel.

[0031] The scalloped or D-ring buckles are high-strength, easy-to-operate standardized components that can reliably bear the initial fixing force and smoothly guide the tail of the shawl through threading and reverse folding, ensuring the reliability and durability of the fixing and adjustment structure. Attached Figure Description

[0032] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0033] Figure 1 This is a schematic diagram showing the location for inserting a TCC into the right internal jugular vein. Both the internal jugular vein inlet and the TCC tunnel are locations that require compression.

[0034] Figure 2 This is a schematic diagram of the arrangement of a flexible thin-film pressure sensor array;

[0035] Figure 3 This is a schematic diagram of the airbag assembly structure;

[0036] Figure 4 This is a schematic diagram of a shawl structure;

[0037] Figure 5 A schematic diagram showing the hemostasis compression device for hemodialysis catheters after it has been put on.

[0038] Figure 6 This is a structural diagram of the first reinforcing rib structure;

[0039] Figure 7 This is a structural diagram of the second reinforcing rib structure;

[0040] Figure 8 This is a schematic diagram of the preferred structure of the second reinforcing rib;

[0041] The components include: 1. Shawl; 11. Buckle; 12. Nylon hook and loop fastener; 2. Compression airbag assembly; 21. First airbag; 22. Second airbag; 211. First reinforcing rib structure; 221. Second reinforcing rib structure; 2210. Main rib; 2211. Secondary rib; 2212. Connecting rib; 3. Air pump; 31. Inflation tube; 32. Air pump connector; 4. Flexible thin-film pressure sensor array. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0043] The following detailed description is exemplary and intended to provide further detailed explanation of the present invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this invention.

[0044] like Figures 1-5As shown, this embodiment provides a hemostatic compression device for hemodialysis catheters, which is suitable for hemostasis of the internal jugular vein inlet and subcutaneous tunnel after TCC insertion. The device includes a shawl fixing component, a zone compression component, and an inflation component.

[0045] The shawl fixing assembly is the load-bearing base and mechanical foundation of the entire device, and its core component is the shawl 1. The core component of the zoned compression assembly is the compression airbag assembly 2, which is fixed to the inside of the shawl 1 (the side facing the skin) by heat pressing or adhesive bonding, ensuring its position is stable relative to the shawl 1. The compression airbag assembly 2 contains at least two independent airbags: a first airbag 21 and a second airbag 22; the first airbag 21 is used as a point-compression airbag, and its cylindrical shape is specifically designed to compress the internal jugular vein puncture site. The cylindrical end face of the first airbag 21 can provide a concentrated, vertical and uniform circular pressure surface, transmitting force to the puncture hole in the deep vein wall, achieving precise point-to-point occlusion. The second airbag 22 serves as a linear compression airbag, designed as a long, rectangular block specifically for compressing subcutaneous tunnels. The elongated compression surface of the second airbag 22 forms a continuous, uniform linear pressure band, covering the tunnel's projection path on the body surface. This applies comprehensive pressure to the loose connective tissue and potential bleeding points along the entire tunnel, solving the problem of manual pressure not being able to cover the entire tunnel. The core component of the inflation assembly is the air pump 3, which is an external, handheld miniature air pump. The first airbag 21 and the second airbag 22 are each connected to an independent inflation tube 31. The inflation tube 31 can be made of medical-grade flexible PVC or more biocompatible silicone tubing, with one end sealed to the corresponding airbag and the other end terminating at the air pump connector 32. The two inflation tubes are independent, facilitating independent inflation and deflation control of the two airbags to adapt to different pressure values ​​required for different locations.

[0046] In one embodiment, the air pump connector 32 has a built-in one-way valve that opens when the air pump is connected and automatically closes when disconnected, forming an automatic seal. In a preferred embodiment, a leak-proof cap can also be added as an independent physical seal that immediately covers the connector 32 after the air pump is disconnected to prevent air leakage.

[0047] In one embodiment, the shawl 1 is designed as a long strip or an approximately triangular flexible piece. The long strip design allows it to conform to the contours of the upper body as much as possible by wrapping around it; the approximately triangular design can better follow the physiological curves from the shoulders to the chest and back, providing better coverage and material utilization.

[0048] As an example, the shawl 1 can be made of a multi-layer composite medical-grade functional fabric. The base layer is a high-density knitted cotton fabric, which provides moisture absorption and breathability and a soft skin-friendly feeling, avoiding skin stuffiness or allergies caused by long-term wearing. The middle layer is laminated with a microporous breathable waterproof membrane, which allows air molecules to pass freely, keeping the skin dry, but at the same time can effectively block the penetration of liquids such as blood and tissue fluid, preventing cross-infection and keeping the device clean. The outermost layer uses a functional polyester fabric treated with antibacterial and antistatic finishes to improve the durability and clinical safety of the product.

[0049] It should be noted that the total length of the shawl 1 in this solution is not specifically limited, and it is subject to being able to cover the patient group.

[0050] In one embodiment, at a preset position in the area near the armpit on the left side of the shawl 1, a buckle 11 is sewn. The buckle 11 is preferably a "day" - shaped adjustment buckle or a "D" - shaped ring made of high-strength polymer, and its function is to serve as the first stress point and guiding ring. On the tail of the shawl 1 and the corresponding covered main body area, the hook surface (hard surface) and the loop surface (soft surface) of the nylon fastener 12 are respectively provided. That is, the two parts of the magic tape are arranged at the positions where they need to be bonded to each other after being wrapped.

[0051] When wearing the shawl 1, place the left side (proximal end) of the shawl 1 on the patient's back, wrap the middle part around the right shoulder, and pull the right side (tail) from the front of the chest to the left armpit; pass the tail through the buckle 11, and at this time, by adjusting the tension of the tail, a preliminary and large-range adjustment of the overall tightness of the shawl can be achieved; fold the tail passing through the buckle back, and use the nylon fastener 12 for bonding to achieve the final firm locking and stepless fine adjustment; by changing the length of the reverse fold, the tightness can be extremely finely adjusted within a small range, ensuring that the device will neither affect the patient's breathing due to being too tight nor shift due to being too loose.

[0052] As Figure 6 and Figure 7 shown, in the preferred embodiment, the first reinforcing rib structure 211 and the second reinforcing rib structure 221 are respectively provided in the first airbag 21 and the second airbag 22.

[0053] Taking the second reinforcing rib structure 221 as an example for introduction.

[0054] As Figure 7As shown, the second reinforcing rib structure 221 includes main ribs 2210, secondary ribs 2211, and connecting ribs 2212. The two main ribs 2210 are respectively arranged on the inner side of the top and bottom surfaces of the second airbag 22. The secondary ribs 2211 are also arranged on the inner side of the second airbag 22. Several secondary ribs 2211 are interleaved with the corresponding main ribs 2210. Connecting ribs 2212 are connected between the corresponding secondary ribs 2211 on the top and bottom surfaces. Connecting ribs can also be set at the connection point of the main ribs 2210 and the secondary ribs 2211 to connect the upper and lower main ribs 2210.

[0055] Preferably, the secondary reinforcement bars 2211 connected to the same main reinforcement bar 2210 are located in the same plane and arranged parallel to each other;

[0056] Preferably, each secondary reinforcement 2211 is arranged perpendicularly to the corresponding main reinforcement 2210.

[0057] A second reinforcing rib structure 221 is provided inside the second airbag 22. This structure consists of two main ribs 2210 distributed on the top and bottom surfaces of the airbag, several parallel secondary ribs 2211 intersecting the main ribs perpendicularly, and connecting ribs 2212 connecting the corresponding secondary ribs on the top and bottom surfaces, forming a stable three-dimensional grid. During inflation, the second reinforcing rib structure 221 can effectively disperse and resist the material stretching tendency of the airbag to a simple spherical shape caused by gas pressure, limiting the expansion of the airbag within a preset geometric space. Thus, after inflation, the second airbag 22 can always maintain its stable elongated cuboid shape, avoiding the problem of uneven pressure distribution with bulging in the middle and flattened at both ends, ensuring that its bottom surface can act as a whole, applying a continuous and uniform linear pressure band to the subcutaneous tunnel projection path, meeting the clinical requirement of reliable compression throughout the subcutaneous tunnel.

[0058] The first reinforcing rib structure 211 and the second reinforcing rib structure 221 have similar structures, which will not be described in detail here.

[0059] It should be noted that the first reinforcing rib structure 211 and the second reinforcing rib structure 221 are made of a flexible but non-stretchable material. In the non-inflated state, the entire compression airbag assembly 2 can be bent or even folded freely due to the flexibility of both the reinforcing ribs and the airbag body, making the wearing, storage, and handling of the shawl 1 extremely convenient. Once inflated, the non-stretchability of the reinforcing ribs becomes dominant, forming an internal three-dimensional network that prevents the airbag from expanding randomly into a simple sphere, precisely constraining and stabilizing the expansion of the airbag within a preset cylindrical or cuboid shape. This ensures the stability of the compression surface shape and the uniformity of pressure distribution throughout the entire hemostasis process.

[0060] like Figure 8As shown, a preferred structure of the second reinforcing rib assembly 221 is given, namely, two parallel main ribs are added to the top and bottom surfaces respectively, and corresponding secondary ribs are added at both ends.

[0061] In a preferred embodiment, a pressure monitoring component is further included. This component is a flexible thin-film pressure sensor array 4, consisting of miniature pressure sensing units arranged in a matrix. It can be directly attached to the pressure surface of the compression cuff assembly 2 using medical-grade low-sensitivity acrylic adhesive, positioned between the cuff and the patient's skin (with a thin dressing as a barrier), allowing it to measure the actual surface contact pressure. Correspondingly, the air pump 3 can integrate a pressure display device, which is an LCD screen that works in conjunction with the pressure sensors. This device displays the current pressure between the cuff and the patient's skin in real-time, digitally, transforming hemostasis from a matter of experience to a data-driven process, enabling medical personnel to perform precise operations based on the displayed data.

[0062] In one embodiment, the pressure display device is electrically connected to the flexible thin-film pressure sensor array 4 via a flexible wire.

[0063] In a preferred embodiment, grooves for embedding / adhering medical dressings are provided on the end face of the first airbag 21 and the bottom face of the second airbag 22. The groove edges have a slight lip structure for fixing the medical hydrocolloid or alginate hemostatic dressing. This physical structure integrates the functions of compression and care, allowing the hemostatic dressing to stably cover the wound and prevent displacement.

[0064] In a preferred embodiment, the two air pump connectors 32 are designed with different physical specifications: the connector for the first airbag is cylindrical, and the connector for the second airbag is triangular prism-shaped. Corresponding anti-misoperation structures are also fabricated on the sockets of the air pumps 3. This physical structure prevents misoperation, ensures that the inflation lines of the point-pressure airbag and the linear pressure airbag are not reversed, and guarantees the accuracy of compression.

[0065] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A hemodialysis catheter hemostasis compression device, characterized in that, The utility model relates to a compression garment, comprising: a cape (1); a compression air bag assembly (2) fixed to the inner side of the cape (1), the compression air bag assembly (2) comprising at least two independent first air bags (21) and second air bags (22); the first air bags (21) are cylindrical point compression air bags, and the second air bags (22) are long strip cuboid linear compression air bags; an air pump (3); the first air bags (21) and the second air bags (22) are respectively connected with independent inflation tubes (31), one end of the inflation tubes (31) is in sealing connection with the corresponding air bags, and the other end is terminated at an air pump joint (32) connectable with the air pump (3).

2. The hemodialysis catheter hemostasis compression device of claim 1, wherein, The air pump joint (32) is internally provided with a one-way valve.

3. The hemodialysis catheter hemostasis compression device of claim 1, wherein, The cape (1) is a long strip or triangular flexible member; the cape (1) is provided with a fixing and adjusting structure, the fixing and adjusting structure comprising a buckle (11) arranged at one end of the cape (1) and a nylon hook-and-loop fastener (12) arranged on the cape (1).

4. The hemodialysis catheter hemostasis compression device of claim 1, wherein, The cape (1) is a multilayer composite structure, comprising a skin-friendly base layer, a breathable and waterproof intermediate layer and an antibacterial and antistatic outer layer.

5. The hemodialysis catheter hemostasis compression device of claim 1, wherein, The first air bags (21) and / or the second air bags (22) are internally provided with a reinforcing rib structure.

6. The hemodialysis catheter hemostasis compression device of any one of claims 1 to 5, wherein, Further comprising a pressure monitoring assembly, the pressure monitoring assembly being a flexible film pressure sensor array (4) attached to the compression surface of the compression air bag assembly (2).

7. The hemodialysis catheter hemostasis compression device of claim 6, wherein, The air pump (3) is integrated with a pressure display device, and the pressure display device is electrically connected with the flexible film pressure sensor array (4).

8. The hemodialysis catheter hemostasis compression device of claim 5, wherein, The reinforcing rib structure in the second air bags (22) comprises two main ribs (2210), a plurality of auxiliary ribs (2211) connected with the main ribs (2210) and connecting ribs (2212) connecting the auxiliary ribs (2211) on the top surface and the bottom surface.

9. The hemodialysis catheter hemostasis compression device of claims 1 or 5, wherein, The second air bags (22) are configured to provide a linear pressure belt through the long strip compression surface thereof for linear and comprehensive compression of a subcutaneous tunnel.

10. The hemodialysis catheter hemostasis compression device of claim 3, wherein, The buckle (11) is a sun-shaped adjusting buckle or a D-shaped ring.

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