A hemodialysis puncture protection device
By designing the buffer and fixation parts of the hemodialysis puncture protection device, the problems of arteriovenous fistula damage and hidden slippage caused by traditional tape fixation methods have been solved, achieving stability and safety in the dialysis process and reducing the risk of complications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-22
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional tape fixation methods cannot buffer or offset the external forces generated by dialysis tubing, resulting in unstable fixation of the puncture needle, increasing the risk of arteriovenous fistula damage, and the tape's reduced adhesiveness can cause hidden slippage problems.
A hemodialysis puncture protection device was designed, comprising a fixing part, an installation part, and a buffer part. The buffer part, made of elastic material, buffers the pulling force, torsional force, and swinging impact force generated by the dialysis tubing. The fixing part replaces the traditional adhesive tape to achieve long-term stable fixation.
It effectively protects the arteriovenous fistula vessels, reduces complications such as bleeding and subcutaneous hematoma, prolongs the lifespan of the fistula, reduces nursing workload, and ensures stable dialysis blood flow.
Smart Images
Figure CN224421118U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to a hemodialysis puncture protection device. Background Technology
[0002] Treatment for end-stage renal disease patients is mainly hemodialysis. Arteriovenous fistulas, as an important vascular access in hemodialysis treatment, are widely regarded as the "lifeline" for these patients due to their advantages such as long service life and few complications. Their functional stability directly determines the dialysis effect and life safety of patients.
[0003] In clinical applications, for patients using arteriovenous fistulas for the first time, their vessel walls are still undergoing reconstruction and adaptation, exhibiting significant characteristics such as smaller vessel diameter and deeper location. This not only increases the difficulty of clinical puncture but also leads to extremely poor stability of the puncture needle after fixation, posing numerous safety risks to the dialysis process. Currently, traditional adhesive tape is commonly used in clinical practice to fix the puncture needle and dialysis tubing. This fixation method is a rigid coupling, and its core defect is that it cannot buffer or offset the forces generated by the tubing. That is, any external force on the dialysis tubing, including pulling force, torsional force, and swinging impact force, will be directly transmitted to the tip of the puncture needle, thereby damaging the fragile fistula vessel. Utility Model Content
[0004] To address the aforementioned issues, this application discloses a hemodialysis puncture protection device.
[0005] A hemodialysis puncture protection device includes a fixing part, a mounting part, and a buffer part; one end of the mounting part is connected to the fixing part, and the other end is connected to the buffer part; the buffer part includes a first connecting member, a first sliding member, a second connecting member, and a first elastic member; one end of the first sliding member is detachably connected to the first connecting member, and the other end is slidably connected to the second connecting member; the first elastic member is located at the end of the first sliding member away from the first connecting member; the first elastic member is wrapped around the side wall of the first sliding member; one end of the first elastic member abuts against the first sliding member, and the other end is connected to the second connecting member; the end of the second connecting member away from the first sliding member is detachably connected to the mounting part.
[0006] Furthermore, the buffer section also includes a limiting member; the limiting member is located between the first connecting member and the first sliding member.
[0007] Furthermore, the fixing part includes a fixing plate and an adhesive layer; one end of the fixing plate is fixedly connected to the mounting part, and the other end is fixedly connected to the adhesive layer.
[0008] Furthermore, the mounting part includes a mounting chamber, a first mounting component, and a second mounting component; one end of the mounting chamber is fixedly connected to the fixing part, and the other end is hinged to the first mounting component; one end of the second mounting component is detachably connected to the first mounting component, and the other end is detachably connected to the mounting chamber.
[0009] Furthermore, the first mounting component has a first mounting bracket at the end furthest from the mounting chamber; the second mounting component has a second mounting bracket at the end furthest from the mounting chamber; the first mounting bracket and the second mounting bracket form a tubular structure.
[0010] The beneficial effects of this utility model are:
[0011] Abandoning the rigid fixation method of traditional adhesive tape, this design incorporates a buffer section to effectively cushion and counteract the pulling, torsional, and oscillating impact forces generated by the dialysis tubing. This prevents external forces from being fully transmitted to the puncture needle tip, preventing needle tip wobbling or displacement caused by slight muscle twitching in the patient's arm or tubing traction. It reduces the risk of needle tip cutting into the vessel wall, lowering the risk of complications such as bleeding and subcutaneous hematoma, and protecting the arteriovenous fistula. Furthermore, it buffers or counteracts the forces generated by tubing torsion, preventing lateral deflection of the needle within the vessel and maintaining the correct needle tip position. This ensures stable dialysis blood flow, reduces frictional damage to the vessel wall, and extends the lifespan of the arteriovenous fistula.
[0012] The fixation device is worn on the patient's body surface, replacing traditional adhesive tape. It is not affected by the patient's sweat or skin secretions, and can achieve long-term stable fixation of puncture needles and tubing. It completely solves the hidden slippage problem caused by the decrease of adhesive tape adhesion, eliminating the need for frequent checks by medical staff and reducing the workload of nursing staff. Attached Figure Description
[0013] Figure 1 A perspective view of a hemodialysis puncture protection device that implements this utility model;
[0014] Figure 2 A front view of a hemodialysis puncture protection device that implements this utility model;
[0015] Figure 3 A top view of a hemodialysis puncture protection device that implements this utility model;
[0016] Figure 4 for Figure 3 Sectional view along axis AA;
[0017] Figure 5 for Figure 3 BB-direction sectional view;
[0018] Figure 6 A perspective view of a fixing part that implements this utility model;
[0019] Figure 7 A perspective view of a first connecting member that implements this utility model;
[0020] Figure 8 A perspective view of a first sliding member implementing this utility model;
[0021] Figure 9 A perspective view of a second sliding member implementing this utility model;
[0022] Figure 10 A perspective view of a second connecting member that implements this utility model;
[0023] Figure 11 A perspective view of a limiting component that implements this utility model;
[0024] Figure 12 A perspective view of an elastic component that implements this utility model;
[0025] In the diagram, 1 is the fixing part; 2 is the mounting part; 3 is the buffer part; 4 is the puncture assembly; 11 is the fixing plate; 12 is the auxiliary frame; 13 is the adhesive layer; 21 is the mounting chamber; 22 is the first mounting component; 23 is the second mounting component; 24 is the sliding groove; 221 is the first mounting frame; 231 is the viewing window; 232 is the second mounting frame; 31 is the first connecting component; 32 is the first sliding component; 33 is the second sliding component; 34 is the second connecting component; 35 is the limiting component; 36 is the first elastic component; 311 is the first mounting shell; 312 is the second mounting shell; 321 is the first sliding shell; 322 is the second sliding shell; 323 is the first guide component; 331 is the third sliding shell; 332 is the fourth sliding shell; 333 is the second guide component; 341 is the third mounting shell; 342 is the fourth mounting shell; 343 is the first positioning block; 344 is the second positioning block; 351 is the elastic ring; 352 is the mounting component. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0027] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.
[0028] To keep the drawings concise, only the parts relevant to this application are shown schematically in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is labeled.
[0029] In this document, it should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “bottom,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0030] In this document, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0031] like Figure 1-12 The hemodialysis puncture protection device shown includes a fixing part 1, a mounting part 2, and a buffer part 3; one end of the mounting part 2 is connected to the fixing part 1, and the other end is connected to the buffer part 3; the buffer part 3 includes a first connecting member 31, a first sliding member 32, a second connecting member 34, and a first elastic member 36; one end of the first sliding member 32 is detachably connected to the first connecting member 31, and the other end is slidably connected to the second connecting member 34; the end of the second connecting member 34 away from the first sliding member 32 is detachably connected to the mounting part 2.
[0032] The first elastic member 36 is located at the end of the first sliding member 32 away from the first connecting member 31; the first elastic member 36 is wrapped around the side wall of the first sliding member 32; one end of the first elastic member 36 abuts against the first sliding member 32, and the other end is connected to the second connecting member 34. The two sides of the first elastic member 36 are mounting members 352, and the interior has a wave-shaped structure. This wave-shaped structure is made of elastic material, which makes the first elastic member 36 elastic.
[0033] During use, the dialysis tubing is inserted through the buffer section 3 and then into the mounting section 2, allowing the puncture needle to contact and puncture the patient's skin. At this point, the dialysis tubing is fixed inside the first sliding member 32. When an external force pulls on the dialysis tubing, the first sliding member 32 moves away from the second connecting member 34, compressing the first elastic member 36 to buffer and counteract the pulling force generated by the dialysis tubing, preventing the external force from being completely transmitted to the puncture needle tip, reducing the cutting of the blood vessel wall by the needle tip, lowering the risk of complications such as bleeding and subcutaneous hematoma, and protecting the arteriovenous fistula.
[0034] Abandoning the traditional rigid fixing mode of adhesive tape, a buffer part 3 is set up to effectively buffer and offset the pulling force, torsional force and swing impact force generated by the dialysis tubing.
[0035] The first sliding member 32 has a first guide member 323 on its side wall to prevent the first sliding member 32 from rotating relative to the second connecting member 34, so as to buffer or counteract the force caused by the torsion of the pipeline, prevent the needle from deflecting laterally in the blood vessel, maintain the correct position of the needle tip in the blood vessel, ensure stable dialysis blood flow, reduce friction damage of the needle tip to the blood vessel wall, and extend the service life of the arteriovenous fistula.
[0036] Furthermore, the buffer part 3 also includes a limiting member 35; the limiting member 35 is located between the first connecting member 31 and the first sliding member 32. The first connecting member 31 is a columnar structure with an internal thread at one end, and a first pressing surface is provided on the inner wall of the first connecting member 31. A second pressing surface is provided on the inner wall of the first sliding member 32 facing the end of the first connecting member 31.
[0037] The limiting member 35 includes an elastic ring 351 and a mounting member 352. In use, the elastic ring 351 surrounds the dialysis tubing to form a tubular structure, and then the mounting member 352 is used to restrict the state of this tubular structure. The elastic ring 351 is made of an elastic material. When the first connector 31 is tightened, the first and second compression surfaces compress the elastic ring 351 on both sides, causing both the inner and outer diameters of the elastic ring 351 to decrease, thus fixing the dialysis tubing inside the elastic ring 351, thereby installing the dialysis tubing inside the buffer section 3.
[0038] The buffer part 3 also includes a second sliding member 33; one end of the second sliding member 33 is slidably connected to the first sliding member 32, and the other end is slidably connected to the second connecting member 34; a second elastic member is provided at the end of the second sliding member 33 away from the first sliding member 32; the second elastic member is wrapped around the side wall of the second sliding member 33; one end of the second elastic member abuts against the second sliding member 33, and the other end abuts against the second connecting member 34. The structure of the second elastic member is the same as that of the first elastic member 36.
[0039] like Figure 4 , 6As shown, the fixation part 1 includes a fixation plate 11 and an adhesive layer 13; one end of the fixation plate 11 is fixedly connected to the mounting part 2, and the other end is fixedly connected to the adhesive layer 13. By wearing the fixation part 1 on the patient's body surface, replacing traditional adhesive tape, it is unaffected by the patient's sweat or skin secretions, achieving long-term stable fixation of the puncture needle and tubing, completely solving the problem of hidden slippage caused by decreased adhesiveness of the tape, eliminating the need for frequent checks by medical staff, and reducing nursing workload.
[0040] In some embodiments of this application, a buffer layer is provided on the side of the fixing plate 11 away from the mounting part 2, and the buffer layer is located between the fixing plate 11 and the adhesive layer 13. The buffer layer is made of flexible materials such as sponge, cotton, or linen to prevent the needle tip from shaking or shifting due to slight muscle twitching of the patient's arm or traction of the tubing, and can also absorb sweat from the patient's skin.
[0041] The mounting part 2 includes a mounting chamber 21, a first mounting member 22, and a second mounting member 23; a piercing hole is provided in the center of the fixing plate 11; the mounting chamber 21 covers the outside of the piercing hole. One end of the mounting chamber 21 is fixedly connected to the fixing part 1, and the other end is hinged to the first mounting member 22; one end of the second mounting member 23 is detachably connected to the first mounting member 22, and the other end is detachably connected to the mounting chamber 21.
[0042] Specifically, the two sides of the installation chamber 21 are fixedly connected with sliding grooves 24; the second installation component 23 slides along the sliding grooves 24.
[0043] The first mounting component 22 has a first mounting bracket 221 at the end away from the mounting chamber 21; the second mounting component 23 has a second mounting bracket 232 at the end away from the mounting chamber 21; the first mounting bracket 221 and the second mounting bracket 232 form a tubular structure, and the second connector 34 is detachably connected to this tubular structure.
[0044] like Figure 7 As shown, the first connector 31 includes a first mounting shell 311 and a second mounting shell 312; the first mounting shell 311 and the second mounting shell 312 are detachably connected. In use, the first mounting shell 311 and the second mounting shell 312 are first separated, then the first mounting shell 311 and the second mounting shell 312 are wrapped around the outside of the dialysis tubing, and then the first mounting shell 311 and the second mounting shell 312 are spliced together, so that the first connector 31 is wrapped around the outside of the dialysis tubing.
[0045] like Figure 8As shown, the first sliding member 32 includes a first sliding shell 321 and a second sliding shell 322; the first sliding shell 321 and the second sliding shell 322 are connected by a snap fastener. The first sliding shell 321 and the second sliding shell 322 form a tubular structure. In use, the first sliding shell 321 and the second sliding shell 322 are first separated, then the first sliding shell 321 and the second sliding shell 322 are wrapped around the outside of the dialysis tube, and then the first sliding shell 321 and the second sliding shell 322 are spliced together, so that the first sliding member 32 is wrapped around the outside of the dialysis tube.
[0046] The first sliding member 32 has a first guide member 323 on its side wall, and the second sliding member 33 has a first guide groove. The first guide member 323 is slidably connected to the first guide groove to prevent the first sliding member 32 and the second sliding member 33 from rotating relative to each other.
[0047] like Figure 9 As shown, the second sliding member 33 includes a third sliding shell 331 and a fourth sliding shell 332; the third sliding shell 331 and the fourth sliding shell 332 are connected by a snap fastener. The third sliding shell 331 and the fourth sliding shell 332 form a tubular structure. In use, the third sliding shell 331 and the fourth sliding shell 332 are first separated, then the third sliding shell 331 and the fourth sliding shell 332 are wrapped around the outside of the dialysis tube, and then the third sliding shell 331 and the fourth sliding shell 332 are spliced together, so that the second sliding member 33 is wrapped around the outside of the dialysis tube.
[0048] The second sliding member 33 has a second guide member 333 on its side wall, and the second connecting member 34 has a second guide groove. The second guide member 333 is slidably connected to the second guide groove to prevent relative rotation between the second sliding member 33 and the second connecting member 34.
[0049] like Figure 10 As shown, the second connector 34 includes a third mounting shell 341 and a fourth mounting shell 342; the third mounting shell 341 and the fourth mounting shell 342 are detachably connected. In use, the third mounting shell 341 and the fourth mounting shell 342 are first separated, then the third mounting shell 341 and the fourth mounting shell 342 are wrapped around the outside of the dialysis tubing, and then the third mounting shell 341 and the fourth mounting shell 342 are spliced together, so that the second connector 34 is wrapped around the outside of the dialysis tubing.
[0050] The above description is merely a specific embodiment of this application. Under the guidance of the above teachings, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of this application, and the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A hemodialysis puncture protection device, comprising a fixing part (1), a mounting part (2), and a buffer part (3); one end of the mounting part (2) is connected to the fixing part (1), and the other end is connected to the buffer part (3), characterized in that, The buffer part (3) includes a first connector (31), a first slider (32), a second connector (34), and a first elastic member (36); one end of the first slider (32) is detachably connected to the first connector (31), and the other end is slidably connected to the second connector (34); the first elastic member (36) is located at the end of the first slider (32) away from the first connector (31); the first elastic member (36) is wrapped around the side wall of the first slider (32); one end of the first elastic member (36) abuts against the first slider (32), and the other end is connected to the second connector (34); the end of the second connector (34) away from the first slider (32) is detachably connected to the mounting part (2).
2. The hemodialysis puncture protection device according to claim 1, characterized in that, The buffer part (3) further includes a limiting member (35); the limiting member (35) is located between the first connecting member (31) and the first sliding member (32).
3. The hemodialysis puncture protection device according to claim 1, characterized in that, The fixing part (1) includes a fixing plate (11) and an adhesive layer (13); one end of the fixing plate (11) is fixedly connected to the mounting part (2), and the other end is fixedly connected to the adhesive layer (13).
4. The hemodialysis puncture protection device according to claim 1, characterized in that, The mounting part (2) includes a mounting chamber (21), a first mounting component (22) and a second mounting component (23); one end of the mounting chamber (21) is fixedly connected to the fixing part (1), and the other end is hinged to the first mounting component (22); one end of the second mounting component (23) is detachably connected to the first mounting component (22), and the other end is detachably connected to the mounting chamber (21).
5. A hemodialysis puncture protection device according to claim 4, characterized in that, The first mounting component (22) has a first mounting bracket (221) at the end away from the mounting chamber (21); the second mounting component (23) has a second mounting bracket (232) at the end away from the mounting chamber (21); the first mounting bracket (221) and the second mounting bracket (232) form a tubular structure.
6. The hemodialysis puncture protection device according to claim 1, characterized in that, The first sliding member (32) includes a first sliding shell (321) and a second sliding shell (322); the first sliding shell (321) and the second sliding shell (322) form a tubular structure.
7. A hemodialysis puncture protection device according to claim 1, characterized in that, The buffer part (3) further includes a second sliding member (33); one end of the second sliding member (33) is slidably connected to the first sliding member (32), and the other end is slidably connected to the second connecting member (34); a second elastic member is provided at the end of the second sliding member (33) away from the first sliding member (32); the second elastic member is wrapped around the side wall of the second sliding member (33); one end of the second elastic member abuts against the second sliding member (33), and the other end abuts against the second connecting member (34).
8. A hemodialysis puncture protection device according to claim 7, characterized in that, The second sliding member (33) includes a third sliding shell (331) and a fourth sliding shell (332); the third sliding shell (331) and the fourth sliding shell (332) form a tubular structure.
9. A hemodialysis puncture protection device according to claim 1, characterized in that, The first connector (31) includes a first mounting shell (311) and a second mounting shell (312); the first mounting shell (311) and the second mounting shell (312) are detachably connected.
10. A hemodialysis puncture protection device according to claim 1, characterized in that, The second connector (34) includes a third mounting shell (341) and a fourth mounting shell (342); the third mounting shell (341) and the fourth mounting shell (342) are detachably connected.