Anti-falling device for hemodialysis catheter

Abstract

The invention provides a hemodialysis catheter anti-falling device, and relates to hemodialysis, the hemodialysis catheter anti-falling device comprises a ring body, the inner side of the ring body is provided with an annular non-return air bag, the outer side of the ring body is sleeved with a pressure element used for pressurizing the annular non-return air bag, and the non-return inner diameter of the annular non-return air bag can be changed under the action of the pressure element; a driving element is arranged on one side of the ring body in parallel, and a driving rod is connected to the driving element and used for being connected with a pressure element. By arranging the pressure element and the driving element, rotation of the driving element relative to the ring body is achieved, so that the pressure element changes the pressure in the annular non-return air bag to change the inner diameter size of the passing groove, and therefore the hemodialysis catheter penetrating through the interior can be fixed in a non-return mode; and then the first magnetic suction supporting arm and the second magnetic suction supporting arm are detachably fixed to the outside, limiting of the hemodialysis catheter is completed, and the stability of the hemodialysis catheter in the using process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of hemodialysis, and in particular to a hemodialysis catheter anti-falling device. Background Art

[0002] Hemodialysis (HD) is one of the renal replacement therapies for patients with acute and chronic renal failure. It drains blood from the body to the outside of the body through a dialyzer composed of countless hollow fibers. The blood and the electrolyte solution (dialysate) containing similar concentrations to the body are exchanged inside and outside the hollow fibers through diffusion, ultrafiltration, adsorption and convection principles to remove metabolic waste from the body, maintain electrolyte and acid-base balance, remove excess water from the body, and return the purified blood. The whole process is called hemodialysis.

[0003] During the hemodialysis process, multiple catheters need to be used. In actual application, multiple catheters are prone to disordered entanglement, which not only affects the actual dialysis effect, but is also not conducive to the subsequent removal of the catheter. Therefore, we have made improvements to this and proposed a hemodialysis catheter anti-dropping device. Summary of the invention

[0004] The object of the present invention is to provide a hemodialysis catheter anti-dropping device, which solves the problem of disordered entanglement between multiple catheters in the traditional hemodialysis process by arranging the cooperation of a pressure element and a driving element.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: A hemodialysis catheter anti-drop device comprises a ring body, an annular non-return airbag is arranged on the inner side of the ring body, and a pressure element for pressurizing the annular non-return airbag is sleeved on the outer side of the ring body, and the non-return inner diameter of the annular non-return airbag can be changed under the action of the pressure element; A driving element is arranged parallel to one side of the ring body, a driving rod is connected to the driving element for connecting with the pressure element, and a limiting element is arranged between the driving element and the ring body, and the position of the pressure element can be limited by the limiting element.

[0006] As a preferred technical solution of the present application, there are two annular check airbags, which are distributed on both sides of the inside of the ring body, and a passing groove for the hemodialysis catheter to pass through is formed between the two annular check airbags.

[0007] As a preferred technical solution of the present application, the pressure element comprises an outer ring fixed to the surface of the ring body, the outer ring has a pressurizing chamber inside, and the outer ring is slidably equipped with a pressurizing piston through the pressurizing chamber; One end of the booster piston is connected to an arc ring, and one end of the arc ring passes through the outer ring and extends to the outside to form a connecting groove.

[0008] As a preferred technical solution of the present application, the outer sleeve ring and the arc-shaped ring are both coaxially arranged with the ring body.

[0009] As a preferred technical solution of the present application, the driving element includes a ring and a guide cylinder fixed to one side of the ring, the ring and the guide cylinder are internally connected to each other, and the driving rod is fixed to the surface of the ring and arranged corresponding to the position of the connecting groove.

[0010] As a preferred technical solution of the present application, the limiting element includes a connecting ring fixed to one side of the sleeve ring, a movable ring fixed to one side of the connecting ring, and a positioning ring formed on the outside of the movable ring; Wherein, a connecting piece is sleeved on the surface of the movable ring for coaxial fixation with the ring body, and a spring is commonly connected between the movable ring and the side wall of the ring body.

[0011] As a preferred technical solution of the present application, the limiting element further comprises a limiting plate fixed to the inner wall of the connecting member, and a limiting groove is provided on the surface of the limiting plate; Wherein, a limiting block matched with the limiting groove is fixed on the surface of the positioning ring.

[0012] As a preferred technical solution of the present application, there are several limiting grooves, and the limiting grooves are distributed in an annular manner on the surface of the limiting plate.

[0013] As a preferred technical solution of the present application, a support frame is fixedly installed on the surface of the collar, and a first magnetic support arm and a second magnetic support arm are respectively extended from both sides of the support frame; Among them, the surface of the first magnetic support arm is provided with an assembly groove, and the surface of the second magnetic support arm is fixed with an assembly block, and the assembly of adjacent devices can be completed by buckling the assembly groove with the adjacent assembly block.

[0014] As a preferred technical solution of the present application, a limiting bolt for limiting the position of the assembly block is threadedly penetrated through the surface of the first magnetic support arm.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of this application: 1. By setting the pressure element and the driving element, the rotation of the driving element relative to the ring body is realized, so that the pressure element changes the pressure in the annular check airbag to change the inner diameter of the groove, so that the hemodialysis catheter inserted inside can be fixed by non-return, and then the first magnetic support arm and the second magnetic support arm are disassembled and fixed with the outside, thus completing the limit of the hemodialysis catheter and ensuring its stability during use; 2. By cooperating with the first magnetic support arm and the second magnetic support arm, it is achieved that when multiple hemodialysis catheters are fixed in order through independent through grooves, the first magnetic support arm can be connected to the second magnetic support arm on the adjacent ring body. In this way, multiple ring bodies can be spliced ​​into one, and at the same time, multiple hemodialysis catheters can be centralized and orderly classified, ensuring their classified removal during and after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a hemodialysis catheter anti-falling device provided in the present application; Figure 2 A schematic diagram of a portion of the structure of a hemodialysis catheter anti-falling device provided in the present application; Figure 3 A schematic diagram of the disassembled structure of a hemodialysis catheter anti-falling device provided in the present application; Figure 4 A schematic diagram of the side structure of a hemodialysis catheter anti-falling device provided in the present application; Figure 5 A schematic cross-sectional view of a hemodialysis catheter anti-falling device provided in the present application; Figure 6 A schematic diagram of the structure of a limiting disk of a hemodialysis catheter anti-falling device provided in the present application; Figure 7 A hemodialysis catheter anti-falling device provided in this application Figure 5 The enlarged structural diagram at A in the middle; Figure 8 A schematic diagram of the structure of a hemodialysis catheter anti-dropping device provided in the present application in use state.

[0017] Indicated in the figure: 1. Ring body; 2. Pressure element; 3. Driving element; 4. Limiting element; 11. annular check air bag; 12. hemodialysis catheter; 13. through slot; 21. outer ring; 22. booster chamber; 23. booster piston; 24. arc ring; 25. connecting groove; 31. collar; 32. guide cylinder; 33. driving rod; 310, support frame; 311, first magnetic support arm; 312, second magnetic support arm; 313, assembly slot; 314, assembly block; 315, limit bolt; 41. Connecting ring; 42. Movable ring; 43. Positioning ring; 44. Connecting piece; 45. Spring; 46. Limiting plate; 47. Limiting groove; 48. Limiting block. DETAILED DESCRIPTION

[0018] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0019] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] See also Figures 1 to 8 The present invention provides a technical solution: a hemodialysis catheter anti-drop device, comprising a ring body 1, an annular check air bag 11 is arranged on the inner side of the ring body 1, and a pressure element 2 for pressurizing the annular check air bag 11 is sleeved on the outer side of the ring body 1, and the inner diameter of the check air bag 11 can be changed by the pressure element 2; A driving element 3 is arranged parallel to one side of the ring body 1, and a driving rod 33 is connected to the driving element 3 for connecting with the pressure element 2. A limiting element 4 is also arranged between the driving element 3 and the ring body 1, and the limiting element 4 can limit the position of the pressure element 2. There are two annular check airbags 11, which are distributed on both sides of the ring body 1, and a through groove 13 for a hemodialysis catheter 12 to pass through is formed between the two annular check airbags 11; The pressure element 2 includes an outer ring 21 fixed to the surface of the ring body 1, and a boosting chamber 22 is provided in the outer ring 21. A boosting piston 23 is slidably mounted on the outer ring 21 through the boosting chamber 22, wherein one end of the boosting piston 23 is connected to an arc ring 24, and one end of the arc ring 24 passes through the outer ring 21 and extends to the outside and forms a connecting groove 25; The outer ring 21 and the arc ring 24 are both coaxially arranged with the ring body 1, and the annular check airbag is connected with the corresponding booster chamber 22; The driving element 3 includes a collar 31 and a guide cylinder 32 fixed to one side of the collar 31. The collar 31 and the guide cylinder 32 are connected to each other. The driving rod 33 is fixed to the surface of the collar 31 and is arranged corresponding to the position of the connecting groove 25. The limiting element 4 includes a connecting ring 41 fixed to one side of the collar 31, a movable ring 42 fixed to one side of the connecting ring 41, and a positioning ring 43 formed on the outside of the movable ring 42, wherein a connecting piece 44 is sleeved on the surface of the movable ring 42 for coaxial fixation with the ring body 1, and a spring 45 is commonly connected between the movable ring 42 and the side wall of the ring body 1; The limiting element 4 further comprises a limiting plate 46 fixed to the inner wall of the connecting member 44, and a limiting groove 47 is provided on the surface of the limiting plate 46, wherein a limiting block 48 matching the limiting groove 47 is fixed on the surface of the positioning ring 43; The number of the limiting grooves 47 is several, and the limiting grooves 47 are distributed in an annular manner on the surface of the limiting plate 46; A support frame 310 is fixedly mounted on the surface of the collar 31, and a first magnetic support arm 311 and a second magnetic support arm 312 are respectively extended on both sides of the support frame 310, wherein a mounting groove 313 is provided on the surface of the first magnetic support arm 311, and a mounting block 314 is fixed on the surface of the second magnetic support arm 312, and the mounting groove 313 is buckled with the adjacent mounting block 314 to complete the assembly of adjacent devices; The surface of the first magnetic support arm 311 is threaded with a limiting bolt 315 for limiting the assembly block 314. When the assembly groove 313 on the first magnetic support arm 311 is engaged with the assembly block 314 on the second magnetic support arm 312 on the adjacent ring body 1, the limiting bolt 315 can be rotated so that one end thereof abuts against the surface of the assembly block 314 to fix it. Specifically, in the actual application process, the hemodialysis catheter 12 to be fixed is placed in the through groove 13 inside the ring body 1, and then the sleeve ring 31 is pushed to make the movable ring 42 and the limit block 48 on the positioning ring 43 on it disengage from the corresponding limit groove 47, and then the sleeve ring 31 can be rotated to make the driving rod 33 on it synchronously drive the arc ring 24 on the ring body. The driven arc ring 24 will drive the boosting piston 23 to slide inside the boosting chamber 22. When the boosting piston 23 slides, the pressure inside the boosting chamber 22 will increase. Thereby, the annular check airbag 11 will be pressurized, and the annular check airbag 11 under the pressurization will increase and change the inner diameter of the groove 13 therein, so that the inner side of the annular check airbag 11 contacts the surface of the hemodialysis catheter 12, and the hemodialysis catheter 12 is fixed in position. After rotating to the right position, the collar 31 is released, and the force of the spring 45 can make the limit block 48 engage with the corresponding limit groove 47, and the adjusted positioning of the pressure element 2 is completed again, ensuring the stability of the internal pressure of the annular check airbag 11. Then, the first magnetic support arm 311 and the second magnetic support arm 312 can be magnetically connected to an external support, thereby completing the positioning of the hemodialysis catheter 12; When it is necessary to centrally and orderly position multiple hemodialysis catheters 12, multiple ring bodies 1 are sequentially sleeved inside the corresponding hemodialysis catheters 12, and then the driving element 3 drives the pressure element 2 to increase the pressure, so that the annular check airbag 11 forms a resistance to the hemodialysis catheter 12, and then the assembly groove 313 on the first magnetic support arm 311 on the adjacent ring body 1 is engaged with the assembly block 314 on the second magnetic support arm 312 on the adjacent ring body 1, thereby completing the positioning effect of the two ring bodies 1 and the hemodialysis catheters 12 thereon, for example Figure 8 As shown, in actual application, the hemodialysis catheters can be reasonably distributed and connected according to the number of the catheters; Since the annular non-return airbag 11 is used to limit the hemodialysis catheter 12, the non-rigid force applied to the hemodialysis catheter 12 during the limiting process is beneficial to the protection of the surface of the hemodialysis catheter 12. At the same time, the pressure of the gas can also ensure the uniformity of the pressure on the outer wall of the hemodialysis catheter 12, avoiding the damage and deformation of the hemodialysis catheter 12 caused by excessive squeezing at a certain position in the traditional rigid non-return limiting effect, thereby ensuring the smooth flow of the liquid therein.

[0024] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A hemodialysis catheter anti-falling device, characterized in that: It comprises a ring body (1), an annular non-return airbag (11) is arranged on the inner side of the ring body (1), and a pressure element (2) for pressurizing the annular non-return airbag (11) is sleeved on the outer side of the ring body (1), and the non-return inner diameter of the annular non-return airbag (11) can be changed under the action of the pressure element (2); A driving element (3) is provided in parallel on one side of the ring body (1); a driving rod (33) is connected to the driving element (3) for connecting with the pressure element (2); a limiting element (4) is also provided between the driving element (3) and the ring body (1); the limiting element (4) can limit the position of the pressure element (2).

2. A hemodialysis catheter anti-falling device according to claim 1, characterized in that: There are two annular non-return airbags (11), which are distributed on both sides of the inside of the ring body (1), and a passing groove (13) for a hemodialysis catheter (12) to pass through is formed between the two annular non-return airbags (11).

3. A hemodialysis catheter anti-falling device according to claim 1, characterized in that: The pressure element (2) comprises an outer ring (21) fixed to the surface of the ring body (1), the outer ring (21) having a pressure chamber (22) therein, and the outer ring (21) being slidably equipped with a pressure piston (23) through the pressure chamber (22); One end of the boosting piston (23) is connected to an arcuate ring (24), and one end of the arcuate ring (24) passes through the outer ring (21) and extends to the outside to form a connecting groove (25).

4. A hemodialysis catheter anti-falling device according to claim 3, characterized in that: The outer sleeve ring (21) and the arc-shaped ring (24) are both coaxially arranged with the ring body (1).

5. A hemodialysis catheter anti-falling device according to claim 4, characterized in that: The driving element (3) comprises a collar (31) and a guide cylinder (32) fixed to a side surface of the collar (31); the collar (31) and the guide cylinder (32) are internally connected to each other; the driving rod (33) is fixed to the surface of the collar (31) and is arranged corresponding to the position of the connecting groove (25).

6. The hemodialysis catheter anti-falling device according to claim 1, characterized in that: The limiting element (4) comprises a connecting ring (41) fixed to a side surface of the sleeve ring (31), a movable ring (42) fixed to a side surface of the connecting ring (41), and a positioning ring (43) formed on the outside of the movable ring (42); The surface of the movable ring (42) is provided with a connecting piece (44) for coaxially fixing with the ring body (1), and a spring (45) is commonly connected between the side wall of the movable ring (42) and the ring body (1).

7. A hemodialysis catheter anti-falling device according to claim 6, characterized in that: The limiting element (4) further comprises a limiting plate (46) fixed to the inner wall of the connecting member (44), and a limiting groove (47) is provided on the surface of the limiting plate (46); Wherein, a limiting block (48) adapted to the limiting groove (47) is fixed on the surface of the positioning ring (43).

8. A hemodialysis catheter anti-falling device according to claim 7, characterized in that: The number of the limiting grooves (47) is a plurality, and the plurality of limiting grooves (47) are distributed in an annular manner on the surface of the limiting plate (46).

9. A hemodialysis catheter anti-falling device according to claim 8, characterized in that: A support frame (310) is fixedly mounted on the surface of the collar (31), and a first magnetic support arm (311) and a second magnetic support arm (312) are respectively extended from two sides of the support frame (310); The surface of the first magnetic support arm (311) is provided with an assembly groove (313), and the surface of the second magnetic support arm (312) is fixed with an assembly block (314), and the assembly groove (313) and the adjacent assembly block (314) are engaged to complete the assembly of adjacent devices.

10. The hemodialysis catheter anti-falling device according to claim 9, characterized in that: A limiting bolt (315) for limiting the position of the assembly block (314) is threadedly penetrated through the surface of the first magnetic support arm (311).

Images