A hemodialysis indwelling catheter fixation component

Abstract

The present invention relates to the technical field of hemodialysis, and discloses a fixing assembly for a hemodialysis indwelling catheter, which includes a fixing ring. A stress groove is formed on the surface of the fixing ring, and a tension spring is fixedly connected to the inner wall of the stress groove. The tension spring is fixedly connected to a pressing ring away from the inner wall of the stress groove. Through the fixing mechanism cooperating with the fixing ring and the pressing ring, the fixing assembly can be effectively fixed on the patient's arm. By providing a reinforcement mechanism on the pressing ring, the connecting tube can be effectively fixed. At the same time, a sealing mechanism fixed on the reinforcement mechanism seals the connecting tube to prevent the occurrence of blood backflow.

Description

Technical Field

[0001] The present invention relates to the technical field of hemodialysis equipment, and specifically relates to a fixing component for a hemodialysis indwelling catheter. Background Technique

[0002] The principle of hemodialysis is mainly to drain the blood in the patient's body through an artificial dialyzer, use a dialysis membrane for material exchange, remove waste and excess water from the blood, and adjust the body fluid balance, and then transfuse the purified blood back into the patient's body.

[0003] In the prior art, when performing hemodialysis on a patient, an indwelling catheter needs to be inserted into the patient's blood vessel and placed in the patient's blood vessel for a long time. However, when fixing the indwelling catheter, it is usually fixed by a bandage. If the bandage is fixed for a long time, it will become loose and must be replaced, resulting in a waste of cost. Summary of the Invention

[0004] The purpose of the present invention is to provide a fixing component for a hemodialysis indwelling catheter to solve the problems raised in the above background technique.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention is a fixing component for a hemodialysis indwelling catheter, including a fixing ring. A stress groove is provided on the surface of the fixing ring. A tension spring is fixedly connected to the inner wall of the stress groove. One end of the tension spring away from the stress groove is fixedly connected to a pressing ring. A connecting pipe is fixedly connected to the surface of the pressing ring. It further includes:

[0007] A fixing mechanism, the fixing mechanism includes an elastic frame with two ends respectively fixed on the fixing ring and the pressing ring. A telescopic plate is fixed on the elastic frame. A right-angle passive plate is fixed on the telescopic plate. A fixing right-angle plate that can abut against the pressing ring is connected to the right-angle passive plate through a limiting elastic rod;

[0008] A reinforcement mechanism, the reinforcement mechanism includes a reinforcement ring fixed to the pressing ring through a connecting column and a elastic sheet located below the reinforcement ring. The elastic sheet and the reinforcement ring are used for clamping and fixing the connecting pipe;

[0009] A sealing mechanism, the sealing mechanism includes a reflux cylinder fixed to the reinforcement ring through a fixing rod and a sealing ball arranged in the reflux cylinder. One end of the reflux cylinder is connected to the connecting pipe, and the other end is connected to an indwelling catheter.

[0010] Furthermore, the number of the tension springs is set to four. The four tension springs are symmetrically arranged on the inner wall of the stress groove. A fixing groove is provided on the surface of the fixing ring.

[0011] Further, a driven rod is fixedly connected to the surface of the telescopic plate. One end of the driven rod away from the telescopic plate is fixedly connected to a passive frame. A pressing rod is fixedly connected to the top of the telescopic plate. One end of the pressing rod away from the telescopic plate is fixedly connected to an elastic plate.

[0012] Further, one end of the passive frame away from the driven rod is fixedly connected to the surface of the elastic plate. Both ends of the limiting elastic rod are respectively fixedly connected to the fixed right-angle plate and the right-angle passive plate.

[0013] Further, the number of the pressing rods is set to four. The four pressing rods are symmetrically arranged with the fixed ring as the center. The number of the fixed right-angle plates is set to four. The four fixed right-angle plates are symmetrically arranged with the fixed ring as the center.

[0014] Further, an extension groove is formed on the surface of the reinforcement ring. An extension ring is slidably connected to the inner wall of the extension groove. The elastic sheet is fixed on the extension ring. A cushion is arranged on the lower side of the elastic sheet.

[0015] Further, a clamping plate is fixed to one end of the fixing rod away from the reinforcement ring. The surface of the clamping plate is fixedly connected to the surface of the reflux cylinder.

[0016] Further, a sealing cylinder is fixedly connected to the surface of the reflux cylinder. A manual valve is fixedly connected to the surface of the sealing cylinder. One end of the manual valve is fixedly connected to a pneumatic tube. A return spring is fixedly connected to the inner wall of the reflux cylinder. A sealing ball is fixed to the lower end of the return spring.

[0017] Further, one end of the pneumatic tube away from the manual valve is fixedly connected to the top of the sealing cylinder and is mutually communicated. The surface of the sealing ball contacts the inner wall of the sealing cylinder.

[0018] The present invention has the following beneficial effects:

[0019] 1. In the present invention, the pressing ring moves downward under the pulling force of the tension spring, which causes the elastic frame to deform, drives the telescopic plates to move towards each other, and finally enables the fixed right-angle plates to further squeeze and fix the contacted fixed ring and the pressing ring, so as to keep the pressing ring and the fixed ring firmly fixed on the arm.

[0020] 2. The reinforcement ring in the reinforcement mechanism is fixedly connected to the pressing ring through the connecting column. Therefore, under the action of the downward pulling force of the tension spring on the pressing ring, the reinforcement ring also has a tendency to move downward. Since the elastic sheet will contact the arm, the elastic sheet and the reinforcement ring cooperate to form extrusion on the connecting pipe, so as to be able to firmly reinforce and fix the connecting pipe.

[0021] 3. The return cylinder of the sealing mechanism is fixed to the reinforcement ring through a fixing rod, so that the sealing mechanism and the reinforcement ring form an integral structure, maintaining the integrity of the entire fixing assembly. With the setting of the sealing ball, the return cylinder can be blocked and opened. When dialysis operation is not required, the return cylinder is kept closed to prevent blood backflow.

[0022] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 Schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the overall sectional structure of the present invention;

[0026] Figure 3 Schematic diagram of the overall structure of the fixing mechanism of the present invention;

[0027] Figure 4 Schematic diagram of the structure of the driven rod of the present invention;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of part A;

[0029] Figure 6 Schematic diagram of the overall structure of the reinforcement mechanism of the present invention;

[0030] Figure 7 Schematic diagram of the structure of the extension ring of the present invention;

[0031] Figure 8 Schematic diagram of the overall structure of the sealing mechanism of the present invention;

[0032] Figure 9 Schematic diagram of the structure of the sealing ball of the present invention.

[0033] In the drawings, the list of components represented by each reference numeral is as follows:

[0034] In the figure: 1. Fixed ring; 2. Tensile spring; 3. Connecting pipe; 10. Fixing mechanism; 11. Elastic frame; 12. Telescopic plate; 13. Right-angle passive plate; 14. Limit elastic rod; 15. Fixed right-angle plate; 16. Anti-slip strip; 17. Driven rod; 18. Passive frame; 19. Extrusion rod; 20. Elastic plate; 21. Pressing ring; 30. Reinforcement mechanism; 31. Connecting column; 32. Reinforcement ring; 33. Fixed rod; 34. Clamping plate; 35. Extension ring; 36. Elastic piece; 37. Pad; 50. Sealing mechanism; 51. Return cylinder; 52. Retaining pipe; 53. Sealing cylinder; 54. Manual valve; 55. Pneumatic pipe; 56. Return spring; 57. Sealing ball; 58. Sliding frame; 59. Passive rod. Detailed implementation manner

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figure 1 - Figure 9 As shown in the figure, the present invention is a fixing assembly for a hemodialysis indwelling catheter, including a fixed ring 1. A force-receiving groove is formed on the surface of the fixed ring 1. A tensile spring 2 is fixedly connected to the inner wall of the force-receiving groove. The tensile spring 2 is fixedly connected to a pressing ring 21 away from the inner wall of the force-receiving groove. A connecting pipe 3 is fixedly connected to the surface of the pressing ring 21. One end of the connecting pipe 3 passes through the rear side of the pressing ring 21 to serve as a connector for connecting to a hemodialysis device. It also includes;

[0037] A fixing mechanism 10, which includes a limit elastic rod 14. A fixed right-angle plate 15 is fixedly connected to the end of the limit elastic rod 14. An anti-slip strip 16 is fixedly connected to the surface of the fixed right-angle plate 15;

[0038] A reinforcement mechanism 30, which includes an extension ring 35. An elastic piece 36 is fixedly connected to the surface of the extension ring 35. A pad 37 is fixedly connected to the surface of the elastic piece 36;

[0039] A sealing mechanism 50, which includes a sealing ball 57. A sliding frame 58 is rotatably connected to the surface of the sealing ball 57. A passive rod 59 is rotatably connected to one end of the sliding frame 58 away from the sealing ball 57.

[0040] The number of the tensile springs 2 is set to four. The four tensile springs 2 are symmetrically arranged on the inner wall of the force-receiving groove. A fixing groove is formed on the surface of the fixed ring 1.

[0041] The fixing mechanism 10 includes an elastic frame 11. The number of the elastic frames 11 is two, and the two elastic frames 11 are symmetrically arranged on both sides of the fixing ring 1. The upper and lower ends of the elastic frame 11 are respectively fixed on the side surfaces of the fixing ring 1 and the pressing ring 21, and the elastic frame 11 is of a C-shaped structure. Among them, the vertical rod of the elastic frame 11 is an arc-shaped structure with the middle bent towards the fixing ring 1. A telescopic plate 12 is fixedly connected to the middle surface of the elastic frame 11. A right-angle passive plate 13 is fixedly connected to the end of the telescopic plate 12. A driven rod 17 is fixedly connected to the surface of the telescopic plate 12. A passive frame 18 is fixedly connected to the end of the driven rod 17 away from the telescopic plate 12. A pressing rod 19 is fixedly connected to the top of the telescopic plate 12. An elastic plate 20 is fixedly connected to the end of the pressing rod 19 away from the telescopic plate 12, so as to effectively fix the patient's arm and prevent the indwelling catheter from loosening.

[0042] One end of the limiting elastic rod 14 away from the fixed right-angle plate 15 is fixedly connected to the surface of the right-angle passive plate 13. The number of the pressing rods 19 is set to four, and the four pressing rods 19 are symmetrically arranged on the two telescopic plates 12 with the fixing ring 1 as the center. The two pressing rods 19 at the same ends of the two telescopic plates 12 are fixed to the end of the same elastic plate 20, and both elastic plates 20 are slightly bent, so that when the two ends of the two elastic plates 20 receive extrusion forces, the middle parts of the two elastic plates 20 can move towards each other. The number of the fixed right-angle plates 15 is set to four, and the four fixed right-angle plates 15 are symmetrically arranged with the fixing ring 1 as the center.

[0043] The reinforcement mechanism 30 includes a connecting column 31. A reinforcement ring 32 is fixedly connected to the end of the connecting column 31. A fixing rod 33 is fixedly connected to the reinforcement ring 32. When the reinforcement ring 32 moves, it will drive the fixing rod 33 to move downward. A clamping plate 34 is fixedly connected to the end of the fixing rod 33 away from the reinforcement ring 32, so as to effectively reinforce the connecting pipe 3 and prevent the patient from shifting when moving.

[0044] One end of the connecting column 31 away from the reinforcement ring 32 is fixedly connected to the surface of the pressing ring 21. An extension groove is formed on the surface of the reinforcement ring 32. The surface of the extension ring 35 is slidably connected to the inner wall of the extension groove. The number of the clamping plates 34 is set to two. When the fixing rod 33 moves, it will drive the clamping plate 34 to move downward. The two clamping plates 34 are symmetrically arranged with the connecting pipe 3 as the center.

[0045] The sealing mechanism 50 includes a reflux cylinder 51. When the clamping plate 34 moves downward, it drives the reflux cylinder 51 to move downward. A retention tube 52 is fixedly connected to the end of the reflux cylinder 51. A sealing cylinder 53 is fixedly connected to the surface of the reflux cylinder 51. A manual valve 54 is fixedly connected to the surface of the sealing cylinder 53. Then, the manual valve 54 is activated to start adding air pressure to the inner wall of the air pressure tube 55. The end of the manual valve 54 is fixedly connected to the air pressure tube 55. A return spring 56 is fixedly connected to the inner wall of the reflux cylinder 51, effectively sealing when hemodialysis is not required and preventing blood reflux.

[0046] The connecting tube 3 completely penetrates the surface of the connecting column 31 and is fixedly connected to the end of the reflux cylinder 51. The end of the retention tube 52 communicates with the end of the reflux cylinder 51. The surface of the clamping plate 34 is fixedly connected to the surface of the reflux cylinder 51. The end of the air pressure tube 55 away from the manual valve 54 is fixedly connected to the top of the sealing cylinder 53 and communicates with each other. The surface of the sealing ball 57 contacts the inner wall of the sealing cylinder 53. A sliding groove is provided on the inner wall of the reflux cylinder 51. The surface of the sliding frame 58 is slidably connected to the inner wall of the sliding groove.

[0047] When in use, the fixing ring 1 and the lower pressure ring 21 are pulled up and down respectively, the patient's arm is inserted between the fixing ring 1 and the lower pressure ring 21, and then the patient is placed in the fixing groove on the surface of the fixing ring 1, and the fixing ring 1 and the lower pressure ring 21 are loosened. Under the tension of the tension spring 2, the lower pressure ring 21 drives the connecting tube to move downward, and the elastic frame 11 is squeezed by the lower pressure ring 21 and the fixing ring 1. At this time, the middle part of the elastic frame 11 will bend and extend toward a place close to each other, and the corresponding extension will push the telescopic plate 12 to move in a direction close to each other, and at the same time, it will drive the squeezing rod 19 to move in a direction close to each other. When the squeezing rod 19 moves, it will squeeze the elastic plate 20 and cause the middle part thereof to bend. When the middle part of the elastic plate 20 bends, it will push the passive The frame 18 moves in a direction approaching each other. When the passive frame 18 moves, it drives the driven rod 17 to move in a direction approaching each other, and causes the telescopic plate 12 to shrink in a direction approaching each other. When the telescopic plate 12 shrinks, it pushes the right-angle passive plate 13 to move in a direction approaching each other. When the right-angle passive plate 13 moves, it pushes the limiting elastic rod 14 to move in a direction approaching each other. When the limiting elastic rod 14 moves, it pushes the fixed right-angle plate 15 to move in a direction approaching each other. When the fixed right-angle plate 15 moves, it drives the anti-slip strip 16 to move in a direction approaching each other and fixes to the surface of the lower pressure ring 21, thereby further strengthening the fixation of the conflicting fixed ring 1 and the lower pressure ring 21. When the lower pressure ring 21 moves downward, it drives the connecting column 31 downward When the connecting column 31 moves, the reinforcing ring 32 will be driven to move downward, and when the reinforcing ring 32 moves downward, the connecting tube 3 will be driven to move downward, and when the reinforcing ring 32 moves, the fixing rod 33 will be driven downward, and when the fixing rod 33 moves, the clamping plate 34 will be driven downward, and when the reinforcing ring 32 moves, the extension ring 35 will be driven downward, and when the extension ring 35 moves, the spring sheet 36 will be pushed downward, and when the spring sheet 36 moves, the pad 37 will be pushed downward, and when the pad 37 contacts the patient's arm, the spring sheet 36 will be squeezed backward, and when the spring sheet 36 is squeezed, it will push the extension ring 35 to extend in a circular shape on the inner wall of the extension groove in a direction away from each other, and when the clamping plate 34 moves downward, the reflux cylinder 51 will be driven downward Move, when the reflux tube 51 moves downward, it will drive the indwelling tube 52 to move downward, keep the indwelling tube 52 inserted in the patient's body, so as to fix the indwelling tube, when the reflux tube 51 moves downward, it will drive the sealing tube 53 to move downward, connect the manual valve 54 with the inflation device, and then transmit the air pressure to the inner wall of the sealing tube 53 through the air pressure tube 55 and push the sealing ball 57, when the sealing ball 57 is pushed by the air pressure, it will move downward and pull the reset spring 56, when the sealing ball 57 moves downward, it will pull the passive rod 59 to move downward, when the passive rod 59 moves, it will pull the sliding frame 58 to move towards each other on the inner wall of the sliding groove; the passive rod 59 and the sliding frame 58 support the sealing ball 57.

[0048] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A hemodialysis indwelling tube fixing assembly, comprising a fixing ring (1), a force-bearing groove being provided on the surface of the fixing ring (1), a tension spring (2) being fixedly connected to the inner wall of the force-bearing groove, a lower pressure ring (21) being fixedly connected to the end of the tension spring (2) away from the force-bearing groove, and a connecting tube (3) being fixedly connected to the surface of the lower pressure ring (21), characterized in that: Also includes: A fixing mechanism (10), the fixing mechanism (10) comprising an elastic frame (11) with two ends respectively fixed to a fixing ring (1) and a lower pressure ring (21), a telescopic plate (12) being fixed to the elastic frame (11), a right-angle passive plate (13) being fixed to the telescopic plate (12), and a fixed right-angle plate (15) capable of abutting against the lower pressure ring (21) being connected to the right-angle passive plate (13) via a limiting elastic rod (14); A reinforcement mechanism (30), the reinforcement mechanism (30) comprising a reinforcement ring (32) fixed to the lower pressure ring (21) via a connecting column (31) and a spring sheet (36) located at the lower side of the reinforcement ring (32), the spring sheet (36) and the reinforcement ring (32) being used to clamp and fix the connection pipe (3); A sealing mechanism (50), the sealing mechanism (50) comprising a reflux cylinder (51) fixed to a reinforcement ring (32) via a fixing rod (33) and a sealing ball (57) arranged in the reflux cylinder (51), one end of the reflux cylinder (51) being connected to a connecting tube (3) and the other end being connected to a retention tube (52); A driven rod (17) is fixedly connected to the surface of the telescopic plate (12); an end of the driven rod (17) away from the telescopic plate (12) is fixedly connected to a passive frame (18); a top of the telescopic plate (12) is fixedly connected to an extrusion rod (19); an end of the extrusion rod (19) away from the telescopic plate (12) is fixedly connected to an elastic plate (20); One end of the passive frame (18) away from the driven rod (17) is fixedly connected to the surface of the elastic plate (20), and the two ends of the limit elastic rod (14) are respectively fixedly connected to the fixed right-angle plate (15) and the right-angle passive plate (13); A sealing cylinder (53) is fixedly connected to the surface of the reflux cylinder (51), a manual valve (54) is fixedly connected to the surface of the sealing cylinder (53), an air pressure tube (55) is fixedly connected to the end of the manual valve (54), a return spring (56) is fixedly connected to the inner wall of the reflux cylinder (51), and the sealing ball (57) is fixed to the lower end of the return spring (56); One end of the air pressure tube (55) away from the manual valve (54) is fixedly connected to the top of the sealing cylinder (53) and the two are interconnected. The surface of the sealing ball (57) is in contact with the inner wall of the sealing cylinder (53).

2. A hemodialysis indwelling tube fixing assembly according to claim 1, characterized in that: The number of the tension springs (2) is four, and the four tension springs (2) are symmetrically arranged on the inner wall of the force-bearing groove, and a fixing groove is provided on the surface of the fixing ring (1).

3. A hemodialysis indwelling tube fixing assembly according to claim 1, characterized in that: The number of the extrusion rods (19) is four, and the four extrusion rods (19) are arranged symmetrically with respect to the fixing ring (1) at the center. The number of the fixed right-angle plates (15) is four, and the four fixed right-angle plates (15) are arranged symmetrically with respect to the fixing ring (1) at the center.

4. The hemodialysis indwelling tube fixing assembly according to claim 1, characterized in that: An extension groove is provided on the surface of the reinforcement ring (32), an extension ring (35) is slidably connected to the inner wall of the extension groove, the spring sheet (36) is fixed on the extension ring (35), and a protective pad (37) is provided on the lower side of the spring sheet (36).

5. The hemodialysis indwelling tube fixing assembly according to claim 1, characterized in that: One end of the air pressure tube (55) away from the manual valve (54) is fixedly connected to the top of the sealing cylinder (53) and the two are interconnected. The surface of the sealing ball (57) is in contact with the inner wall of the sealing cylinder (53).

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