A shroud catheter clamp integrated device for hemodialysis

Abstract

This invention provides an integrated cover and catheter clamp device for hemodialysis. The cover and cover cover are connected by a hinge. Both the cover and cover cover have arc-shaped catheter half-holes. Fastening straps and Velcro are fixed to the cover and cover cover respectively. A connecting frame, a left catheter seat, and a right catheter seat are fixed to both sides inside the cover. A pressing mechanism is installed on the connecting frame, which includes a left button, a right button, a connecting rod, a pressure rod, and a spring. A pressure block is installed at the bottom of the pressure rod, and the lower surface of the pressure block contacts the upper surface of the dialysis catheter. This device uses an integrated cover and catheter clamp design, placing the catheter clamp inside the cover. This changes the line contact during dialysis catheter closure to a surface contact, ensuring the lifespan of the dialysis catheter and the quality of dialysis for the patient. Furthermore, the device has a reasonable structural design, is simple, convenient, practical, and economical, and can be widely used in clinical dialysis treatment, suitable for most hospitals and medical research institutions.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, and in particular to an integrated device for hemodialysis with a protective cover and catheter clamp. Background Technology

[0002] In clinical hemodialysis treatment, the widespread use of tunneled, polyester-sheathed central venous catheters provides patients with relatively stable vascular access. Current technology generally uses catheter clamps to block blood flow in the dialysis catheter. However, because these clamps are used to fix the dialysis catheter in the same position for extended periods, they are prone to causing a series of problems, such as localized pressure deformation, silicone aging and adhesion, leading to catheter blockage, patient infection complications, and severely impacting the lifespan of the dialysis catheter and the quality of dialysis. Specifically, this manifests as: 1. Risk of mechanical damage and breakage of the catheter: ① Material fatigue: Because the contact surface between the catheter clamp and the dialysis catheter is line contact, repeated clamping at the same position causes long-term localized pressure on the dialysis catheter, generating shear force, which can cause fatigue, deformation, or even breakage of the catheter material, especially for catheters made of silicone or polyurethane; ② If the clamping position is close to a weak point in the catheter, it can accelerate the damage to the catheter structure, increasing the risk of breakage or leakage. 2. Impaired dialysis catheter function: ① It can cause narrowing or blockage of the dialysis catheter lumen: Continuous clamping in the same position can cause pressure deformation of the catheter lumen, and even cause adhesion of the catheter wall, thus affecting blood flow or causing complete blockage; ② Hemodynamic abnormalities: If the dialysis catheter lumen is narrowed due to improper clamping position, it may affect blood flow and reduce dialysis efficiency. 3. Increased risk of infection: ① Damage to local skin by the catheter clamp: Long-term clamping in the same position can compress the skin, leading to local ischemia, damage or pressure sores, providing a pathway for bacterial invasion; ② Damage to the integrity of the catheter surface: Repeated clamping wears down the catheter surface, increasing the risk of bacterial colonization. 4. Increased risk of thrombosis: ① Blood stasis: Deformation of the catheter clamping position may lead to changes in hemodynamics within the catheter, promoting the formation of fibrin sheaths or thrombi, further causing catheter dysfunction; ② Risk of secondary embolism: Thrombus dislodgement within the catheter may lead to pulmonary embolism or other vascular embolic events. 5. Decreased stability of the polyester sheath: ① Long-term mechanical pressure may affect the fusion of surrounding tissues with the polyester sheath, leading to insecure catheter fixation and increasing the risk of displacement or dislodgement; ② Risk of tunnel infection: Damage to the tissues surrounding the polyester sheath may disrupt the tunnel seal, increasing the probability of tunnel infection. 6. Reduced patient comfort: Long-term pressure from the catheter clip on the same location may cause patient pain, especially in areas with thin subcutaneous tissue (such as the clavicular region) or areas with frequent movement.

[0003] The utility model patent with patent number 202222082805.8 discloses "a dialysis catheter clamp with good clamping effect". Its main technical features are: a buckle assembly, which is set at the handle port of the clamping device and connects and fixes the clamping device; a clamping device, which is set on the surface of the handle of the clamping device and fixes the connection of the clamping device; and a disassembly device, which is set at the front end of the clamping device and can remove the fixing device from the inside of the clamping device.

[0004] The utility model patent with patent number 202221012593.X discloses "a detachable dialysis catheter clamp", the main technical features of which are: the upper and lower beaks are connected by a mortise and tenon structure, one end of the upper beak is integrally connected to two connecting plates downward, the lower beak is provided with two grooves at one end corresponding to the two connecting plates, the connection between the upper and lower beaks is annular, the other side of the upper beak is provided with a retaining plate inclined upward, the lower beak is provided with a through hole with an opening at the top on one side of the retaining plate, and the lower beak is provided with a retaining groove corresponding to the retaining plate.

[0005] None of the aforementioned dialysis catheter clamps have protective covers; their function is merely to secure the dialysis catheter, without considering post-dialysis procedures for when the catheter remains on the patient's body after dialysis.

[0006] In summary, the present invention provides a device for integrating a protective cover and catheter clamp for hemodialysis. Summary of the Invention

[0007] The purpose of this invention is to provide an integrated device for hemodialysis catheter clips with a protective cover. The technical problem this invention aims to solve is: by integrating the protective cover and catheter clip, the catheter clip is placed inside the protective cover, preventing it from contacting the skin. Through the pressing rod and block in the pressing device, the existing line contact of the dialysis catheter is changed to surface contact. This solves the technical problems of localized catheter deformation under pressure, silicone aging and adhesion, which can lead to catheter blockage, patient infection complications, and seriously affect the service life of the dialysis catheter and the quality of dialysis for the patient.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows: A hemodialysis catheter clamp integrated device includes: a protective cover, a left catheter seat, a fastening strap, a dialysis catheter, a hinge, a right catheter seat, Velcro, a protective cover cover, an arc-shaped catheter half-hole, a connecting frame, a mounting plate, a pressure rod perforation, and a pressing mechanism. The pressing mechanism includes: a left button, a right button, a connecting rod, a spring, a clip, a baffle, a pressure block, a pressure rod, a disc connector, a felt sheet, a groove, and a connector baffle. The protective cover and the protective cover cover are connected by a hinge, with corresponding openings at the top and bottom of the protective cover and cover cover. It has an arc-shaped catheter half-hole, and at least two pairs of fastening straps are fixed on the shield and shield cover respectively. Each fastening strap is fixed with Velcro. Velcro is fixed on the outer surface of the shield cover. Connecting brackets are fixed on the two sides inside the shield respectively. One end of the connecting bracket is fixed to the inner wall of the shield, and the other end is fixed to the left catheter seat and the right catheter seat respectively. A pressing mechanism is installed on the connecting bracket. One end of the pressing mechanism extends to the outside of the shield wall, and the other end extends into the left catheter seat and the right catheter seat respectively. The lower surface of the pressing block at its end is in contact with the dialysis catheter.

[0009] In the device, two connecting rods of the pressing mechanism protrude from the wall of the protective cover. A left button and a right button are respectively installed on the top of the two connecting rods. A pressure rod is embedded in the bottom of the two connecting rods. A spring is fitted on the outside of the pressure rod part between the connecting baffle and the mounting plate. The top of the spring contacts the bottom of the connecting baffle, and the bottom of the spring contacts the mounting plate. The two pressure rods pass through the pressure rod through holes on the mounting plate and extend into the left and right catheter seats. A pressure block is installed at the bottom of the two pressure rods. The lower surface of the pressure block contacts the upper surface of the dialysis catheter.

[0010] The pressure rod in the device has a disc connector fixed on its top, which connects the pressure rod to the connecting rod. Felt sheets are fixedly attached to the bottom and sides of the pressure block, and the pressure rod and the pressure block are connected by threads.

[0011] The connecting rod in the device has a card fixed at its bottom. By rotating the connecting rod, the card is engaged with the baffle on the mounting plate. A connecting baffle is fixed on the inner side of the bottom of the connecting rod. A groove is provided between the connecting baffle and the bottom of the connecting rod. The connecting rod is engaged with the disc connector at the top of the pressure rod through the groove.

[0012] The device has a mounting plate fixedly installed on the connecting frame. The mounting plate has a pressure rod through hole in the middle, and four baffles are fixedly installed around the pressure rod through hole respectively.

[0013] The protective cover, left catheter seat, right catheter seat, protective cover cover, connecting frame, connecting rod, mounting plate, pressure block, and pressure rod in the device are all made of medical transparent PVC material.

[0014] The distance the connecting rod is pressed down in the device is the same as the diameter of the dialysis catheter, and the width of the pressure block is the same as the diameter of the dialysis catheter.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This device adopts an integrated design of the protective cover and catheter clamp, placing the catheter clamp inside the protective cover. This changes the line contact during dialysis catheter occlusion to surface contact, ensuring the service life of the dialysis catheter and the quality of dialysis for the patient. 2. This device blocks blood flow in the dialysis catheter by pressing the lever and the block. Due to the large contact area, it solves the problems of local pressure deformation of the catheter, silicone aging and adhesion, which can lead to blockage of the dialysis catheter and infection complications in patients. 3. The device has a clip on the connecting rod. By rotating the connecting rod, the clip is engaged with the baffle on the mounting plate. At the same time, the pressure rod and pressure block are pushed down to press down the dialysis catheter, thereby blocking the blood flow in the catheter and fixing the pressure rod and pressure block. 4. The device has a spring fitted outside the pressure rod. By rotating the connecting rod, the card is disengaged from the baffle on the mounting plate. When the pressure rod and pressure block fail to block the dialysis catheter, the spring force automatically resets the connecting rod, pressure rod, and pressure block. 5. The device secures the protective cover and the protective cover with fastening straps and Velcro. At the same time, the Velcro on the protective cover is attached to the Velcro on the patient's clothing, which solves the problem of catheter clamps damaging the local skin, causing local ischemia, damage or pressure sores. 6. The device has a reasonable structural design, is simple, convenient and practical to operate, and has low economic cost, which greatly reduces medical expenses. It can be widely used in clinical dialysis treatment and is suitable for most hospitals and medical research institutions. Attached Figure Description

[0016] To more clearly illustrate the technology of this utility model in its embodiments, the accompanying drawings are briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without any creative effort.

[0017] The accompanying drawings, including their structure, proportions, and sizes, are only intended to complement the content disclosed in this specification and to enable those skilled in the art to understand and read them. They are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 A schematic diagram of the main structure of the integrated device for the protective cover and guide clamp; Figure 2A rear view of the integrated device for the protective cover and guide clamp; Figure 3 A schematic diagram of the unfolded structure of the integrated protective cover and guide clamp device; Figure 4 A schematic diagram of the left side of the integrated device for the protective cover and guide clamp; Figure 5 A schematic diagram of the pressing structure; Figure 6 Structural diagrams of pressure bars and pressure blocks; Figure 7 Structural diagram of buttons and connecting rods; Figure 8 ,for Figure 5 A schematic diagram of the AA direction in the middle; Figure 9 Diagram showing the state of the dialysis catheter after pressing.

[0019] In the diagram: 1. Protective cover, 2. Left catheter seat, 3. Left button, 4. Fastening strap, 5. Dialysis catheter, 6. Hinge, 7. Right button, 8. Right catheter seat, 9. Velcro, 10. Protective cover, 11. Arc-shaped catheter half-hole, 12. Connecting bracket, 13. Connecting rod, 14. Spring, 15. Clip, 16. Baffle, 17. Mounting plate, 18. Pressure block, 19. Pressure rod, 20. Disc connector, 21. Felt sheet, 22. Groove, 23. Connector baffle, 24. Pressure rod perforation. Detailed Implementation

[0020] The technical solution of this utility model will be further described clearly and completely below with reference to the accompanying drawings. The specific embodiments described below are only used to further illustrate this application and should not be construed as limiting the scope of protection of this application. Those skilled in the art can make some non-essential improvements and adjustments to this application based on the above application content.

[0021] See appendix Figure 1-8 The connection and installation of the device utilizes precision machining or 3D printing technology to fabricate the protective cover 1, the protective cover cover 10, and the hinge 6. Simultaneously, the left guide tube seat 2, the right guide tube seat 8, the connecting frame 12, the mounting plate 17, four baffles 16, and the pressure rod through hole 24 are machined inside the protective cover 1. Guide tube through holes are opened on the left guide tube seat 2 and the right guide tube seat 8, and corresponding arc-shaped guide tube half-holes 11 are opened at both ends of the protective cover 1 and the protective cover cover 10. At least two pairs of fastening straps 4 are respectively fixed to the protective cover 1 and the protective cover cover 10, and Velcro 9 is fixed to each fastening strap 4 and the outer surface of the protective cover cover 10. The protective cover 1 and the protective cover cover 10 are connected by the hinge 6.

[0022] The connecting rod 13, along with the card 15, connector baffle 23, and groove 22 at the bottom of the connecting rod 13, are manufactured using precision machining or 3D printing technology. The pressure rod 19 and its top disc connector 20 are manufactured, along with the external thread at its bottom. The pressure block 18 and the internal thread in the threaded hole are manufactured. The felt sheet 21 is fixed to the bottom and sides of the felt sheet 21. The width of the pressure block 18 should be the same as the diameter of the dialysis catheter 5 used.

[0023] Two connecting rods 13 are inserted from both sides of the protective cover 1. Left button 3 and right button 7 are installed on the top of the two connecting rods 13, with the downward pressure stroke set to be the same as the diameter of the dialysis catheter 5. A spring 14 is fitted over the pressure rod 19, and the pressure rod 19 is engaged with the groove 22 at the bottom of the connecting rod 13 via the disc connector 20. During installation, ensure that the top of the spring 14 contacts the connector baffle 23 and the bottom of the spring 14 contacts the upper surface of the mounting plate 17. One of the pressure rods 19 is inserted into the left catheter seat 2 through the pressure rod through-hole 24. The pressure block 18 is threadedly connected to the pressure rod 19 through the catheter through-hole. The dialysis catheter 5 passes through the catheter through-hole into the left catheter seat 2, so that the pressure block 18 applies slight pressure to the dialysis catheter 5, ensuring that the dialysis catheter 5 does not slip or fall out within the left catheter seat 2, while simultaneously ensuring smooth blood flow within the catheter. The installation of the inner connecting rod 13, spring 14, pressure block 18, and pressure rod 19 of the right guide tube seat 8 is the same as the installation steps of the left guide tube seat 2. After the above installation is completed, close the protective cover 1 and the protective cover cover 10, and fasten them with fastening straps 4 and Velcro 9. Then, sterilize and seal the entire device for later use.

[0024] In use, peel off the Velcro 9 on the outer surface of the protective cover 10, install one of them in the appropriate position on the patient's changing clothes, and then stick the protective cover 1 on the changing clothes to separate it from the patient's skin. One end of each of the two dialysis catheters 5 is connected to the output and input ends of the dialysis equipment, respectively, and the other end is connected to the patient's dialysis blood vessel for dialysis operation. When the dialysis operation is completed and it is necessary to cut off the blood in the dialysis catheters 5, press down the left button 3 or the right button 7. The left button 3 or the right button 7 will move the connecting rod 13 and the pressure rod 19 downwards, at which time the spring 14 is in a compressed state. When the connecting rod 13 and the pressure rod 19 move downwards to complete the set stroke, the pressure block 18 presses the dialysis catheter 5, blocking the blood flow inside the dialysis catheter 5. While maintaining the downward pressure, rotating the left button 3 or the right button 7 causes the connecting rod 13 to rotate. The groove 22 at the bottom of the connecting rod 13 rotates along the disc connector 20, while the pressure rod 19 does not rotate. This engages the clip 15 at the bottom of the connecting rod 13 with the baffle 16 on the mounting plate 17, completing the operation of blocking the blood flow inside the dialysis catheter 5 (see Appendix). Figure 9 ).

[0025] When dialysis is needed again, turn the left button 3 or the right button 7. The left button 3 or the right button 7 will rotate the connecting rod 13, causing the clip 15 at the bottom of the connecting rod 13 to disengage from the baffle 16 on the mounting plate 17. Under the action of the spring 14, the connecting rod 13 and the pressure rod 19 will be reset. The pressure block 18 will move upward along with the connecting rod 13 and the pressure rod 19 within the left catheter seat 2 or the right catheter seat 8, restoring the dialysis catheter 5 to its state before being depressurized and ensuring unobstructed blood flow within the dialysis catheter 5. Because the protective cover 1 protects the dialysis catheter 5, the patient can move freely while wearing the protective cover 1.

[0026] After a period of use, it was found that the dialysis catheter 5 was aging. Medical staff can loosen the fastening strap 4 and Velcro 9 to open the protective cover 1 and replace the dialysis catheter 5 inside the protective cover 1 to ensure the quality of dialysis.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the protection scope of this utility model. All equivalent changes or modifications made based on the technical essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A shroud catheter clamp integrated device for hemodialysis, comprising: The device comprises a protective cover (1), a left catheter seat (2), a fastening strap (4), a dialysis catheter (5), a hinge (6), a right catheter seat (8), a Velcro strap (9), a protective cover (10), an arc-shaped catheter half-hole (11), a connecting frame (12), a mounting plate (17), a pressure rod through-hole (24), and a pressing mechanism, wherein the pressing mechanism includes: a left button (3), a right button (7), a connecting rod (13), a spring (14), a card (15), a baffle (16), a pressure block (18), a pressure rod (19), a disc connector (20), a felt sheet (21), a groove (22), and a connector baffle (23). The device is characterized in that: the protective cover (1) and the protective cover (10) are connected by a hinge (6), and at the top of the protective cover (1) and the protective cover (10)... The top and bottom are respectively provided with arc-shaped catheter half holes (11). At least two pairs of fastening straps (4) are fixed on the shield (1) and shield cover (10). Velcro (9) is fixed on each of the fastening straps (4). Velcro (9) is fixed on the outer surface of the shield cover (10). Connecting brackets (12) are fixed on both sides inside the shield (1). One end of the connecting bracket (12) is fixed on the inner wall of the shield (1), and the other end is fixed on the left catheter seat (2) and the right catheter seat (8) respectively. A pressing mechanism is installed on the connecting bracket (12). One end of the pressing mechanism extends to the outside of the shield (1) wall, and the other end extends into the left catheter seat (2) and the right catheter seat (8) respectively. The lower surface of the end pressure block (18) is in contact with the dialysis catheter (5).

2. The integrated hoods catheter clamp device for hemodialysis according to claim 1, characterized in that: The two connecting rods (13) of the pressing mechanism in the device protrude through the wall of the protective cover (1). A left button (3) and a right button (7) are respectively installed on the top of the two connecting rods (13). A pressure rod (19) is respectively embedded in the bottom of the two connecting rods (13). A spring (14) is fitted on the outside of the pressure rod (19) between the connecting baffle (23) and the mounting plate (17). The top of the spring (14) is in contact with the bottom of the connecting baffle (23), and the bottom of the spring (14) is in contact with the mounting plate (17). The two pressure rods (19) pass through the pressure rod through hole (24) on the mounting plate (17) and extend into the left catheter seat (2) and the right catheter seat (8). A pressure block (18) is respectively installed at the bottom of the two pressure rods (19). The lower surface of the pressure block (18) is in contact with the upper surface of the dialysis catheter (5).

3. The integrated hoods catheter clamp device for hemodialysis according to claim 1, characterized in that: The pressure rod (19) in the device has a disc connector (20) fixed on its top. The pressure rod (19) and the connecting rod (13) are connected by the disc connector (20). The bottom and sides of the pressure block (18) are fixedly glued with felt (21). The pressure rod (19) and the pressure block (18) are connected by threads.

4. The integrated hoods catheter clamp device for hemodialysis according to claim 1, characterized in that: The connecting rod (13) in the device has a card (15) fixed at its bottom. By rotating the connecting rod (13), the card (15) is engaged with the baffle (16) on the mounting plate (17). A connecting baffle (23) is fixed on the inner side of the bottom of the connecting rod (13). A groove (22) is provided between the connecting baffle (23) and the bottom of the connecting rod (13). The connecting rod (13) is engaged with the disc connector (20) at the top of the pressure rod (19) through the groove (22).

5. The integrated hoods catheter clamp device for hemodialysis according to claim 1, characterized in that: The connecting frame (12) in the device is fixedly mounted with a mounting plate (17), and a pressure rod through hole (24) is opened in the middle of the mounting plate (17). Four baffles (16) are fixedly mounted around the pressure rod through hole (24) respectively.

6. The integrated hoods catheter clamp device for hemodialysis according to claim 1, characterized in that: The protective cover (1), left catheter seat (2), right catheter seat (8), protective cover (10), connecting frame (12), connecting rod (13), mounting plate (17), pressure block (18), and pressure rod (19) in the device are all made of medical transparent PVC material.

Images