Catheter fixing device for hemodialysis

Abstract

The catheter fixing device comprises a hand ring assembly, the hand ring assembly comprises a fixing ring, a rubber belt connected with the interior of the fixing ring in a sleeved mode is arranged at the bottom end of the fixing ring, and one end of the rubber belt extends into the fixing ring and is in sliding connection with the inner wall of the fixing ring; a limiting seat is fixed to the top end of the fixing ring, a clamping cavity used for clamping a catheter is formed in the limiting seat, a winding assembly is arranged between the fixing ring and the rubber belt and comprises a winding box fixed to the bottom end of the fixing ring, and a disinfection assembly is installed in the winding box. And a fixing assembly is mounted in the clamping cavity. By arranging the fixing assembly and the winding assembly, the catheter can be efficiently and stably fixed and limited, in addition, adaptive rapid adjustment can be carried out according to the specifications of arms of different patients, and use is very convenient.

Description

Technical Field

[0001] The invention relates to the technical field of catheter fixing, in particular to a catheter fixing device for hemodialysis. Background Art

[0002] Hemodialysis 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 and passes it through a dialyzer composed of countless hollow fibers. The blood and an electrolyte solution (dialysate) containing electrolytes at concentrations similar to those in the body are exchanged inside and outside the hollow fibers through the principles of diffusion, ultrafiltration, adsorption and convection. This removes metabolic waste from the body, maintains electrolyte and acid-base balance, removes excess water from the body, and returns the purified blood. The entire process is called hemodialysis.

[0003] The dialysis catheter includes a catheter, dilator, guide wire, puncture needle, heparin cap and medical transparent film. Some models also have valve introducers, micro-introducers, tunnel needles and other accessories; the material of the catheter is polyurethane, and the material of the guide wire, puncture needle and tunnel needle is stainless steel. This product is a disposable product sterilized with ethylene oxide. This product is suitable for establishing temporary, short-term or long-term vascular access through the jugular vein, subclavian artery (or vein) or femoral vein during hemodialysis, hemoperfusion or plasma separation dialysis treatment.

[0004] At present, during the hemodialysis process, since the blood in the catheter is flowing and has a certain flow rate, the catheter will shake under the impact of the blood, which will cause the needle connected to the patient's catheter to shift or even fall off. The means used in the prior art to deal with the above situation is to use medical tape to bond the catheter to the human skin for position limiting. However, since there are sweat glands on the human skin, after a period of use, the tape will cause its viscosity to decrease due to sweating and eventually cause the catheter to collapse, and it cannot effectively play a role in limiting and fixing the catheter. For this reason, we propose a catheter fixing device for hemodialysis. Summary of the invention

[0005] Based on this, an object of the present invention is to provide a catheter fixing device for hemodialysis to solve the technical problems in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a catheter fixing device for hemodialysis, comprising a wristband assembly, wherein the wristband assembly comprises a fixing ring, and a rubber belt which is sleeved with the inside of the fixing ring is arranged at the bottom end of the fixing ring, and one end of the rubber belt extends into the inside of the fixing ring and is slidably connected with the inner wall of the fixing ring, a limiting seat is fixed at the top end of the fixing ring, and a clamping cavity for clamping the catheter is opened inside the limiting seat, a winding assembly is arranged between the fixing ring and the rubber belt to adjust the length of the rubber belt, the winding assembly comprises a winding box fixed at the bottom end of the fixing ring, and a disinfection assembly is installed inside the winding box to disinfect the rubber belt, and a fixing assembly is installed inside the clamping cavity to achieve secondary limiting fixation of the catheter.

[0007] By adopting the above technical solution, the catheter can be fixed and limited efficiently and stably. In addition, it can be adaptively and quickly adjusted according to the specifications of different patients' arms, which is very convenient to use.

[0008] The present invention is further configured such that driving gear plates are installed on the inner walls on both sides of the winding box, and the ends of one group of the driving gear plates are synchronously connected to adjustment knobs installed on the outer wall of the winding box, and a winding roller is fixedly connected between the two groups of driving gear plates, and a through opening for assisting the rubber belt to enter and exit is opened at the bottom end of the winding box.

[0009] By adopting the above technical solution, the winding roller can be driven.

[0010] The present invention is further configured such that the disinfection component includes a rotating shaft installed below the winding roller and located inside the winding box, and there are two groups of rotating shafts that are symmetrically distributed, and the ends of each group of the rotating shafts are synchronously connected to a driven gear plate, and the driven gear plate is meshed with an adjusting knob, and a disinfectant liquid tank is fixed on the outer wall of the other side of the winding box on the outside of the rotating shaft, and a chamber for loading disinfectant is installed inside the disinfectant liquid tank, and a water inlet pipe extending to the inside of the rotating shaft is installed in the chamber, and disinfectant cotton is sleeved on the outer wall of the rotating shaft, and a water supply pipe connected to the water inlet pipe is installed inside the rotating shaft, and water diversion cotton extending to the inside of the disinfectant cotton is arranged inside the water supply pipe.

[0011] By adopting the above technical solution, the rubber belt can be disinfected.

[0012] The present invention is further configured such that a stirring assembly is provided in the disinfectant tank to achieve stirring of the disinfectant, the stirring assembly includes a stirring plate installed on the inner wall of the disinfectant tank, and the end of the stirring plate is fixedly connected to a transmission shaft extending to the outside of the disinfectant tank and synchronously connected to the driving gear plate, and the transmission shaft is sealed with the inner wall of the disinfectant tank, and a stirring rod is fixed to the end of the stirring plate, and there are multiple groups of stirring rods distributed in a ring on the end surface of the stirring plate.

[0013] By adopting the above technical solution, the disinfectant can be stirred.

[0014] The present invention is further configured such that the fixing assembly includes a clamping plate arranged inside the limit seat, and there are two groups of clamping plates that are symmetrically arranged, and the clamping plates are also slidably connected to the inner wall of the limit seat, and a driving structure for driving the clamping plates is also installed inside the limit seat below the clamping plates.

[0015] By adopting the above technical solution, a secondary clamping and limiting effect is achieved on the catheter.

[0016] The present invention is further configured as follows: the driving structure includes a driven roller installed at the bottom end of the limit seat, and the bottom end portion of the driven roller extends into the fixed ring and contacts with the top wall of the rubber belt, a first gear and a relay gear are respectively provided on both sides of the driven roller, and the driven roller is transmission-connected to the first gear and the relay gear through a transmission turntable and a transmission belt, one side of the relay gear is meshedly connected with a second gear, and the top ends of the first gear and the second gear are meshedly connected with a driven gear rod, and each group of the driven gear rods is slidingly connected to the inner wall of the limit seat, the top ends of each group of the driven gear rods are fixedly connected with a synchronization rod, and each group of the synchronization rods is slidingly connected to the inner wall of the limit seat, and the two groups of the synchronization rods are respectively connected to the two groups of the splints.

[0017] By adopting the above technical solution, a driving effect is achieved on the splint.

[0018] In summary, the present invention mainly has the following beneficial effects:

[0019] 1. The present invention is provided with a winding component and a fixing component. First, the device is inserted from the patient's hand to the front of the needle insertion position, and then the device can be fixed to the patient's arm. Specifically, by turning the adjusting knob, the adjusting knob will drive the driving gear plate to rotate, and the driving gear plate will drive the winding roller to rotate, so the winding roller will wind the rubber belt until the device is adapted to the patient's arm, that is, the device will not shake or shift. Then, the catheter can be inserted into the engaging cavity provided by the limiting seat to achieve the initial limiting fixation of the catheter. In the above-mentioned rubber During the adjustment and movement of the tape, it will drive the driven roller to rotate through friction. After the driven roller rotates, it will drive the first gear and the relay gear on both sides to rotate through the transmission effect. After the relay gear rotates, it will drive the second gear to rotate in the opposite direction of the first gear through meshing. Under the action of the first gear and the second gear, the driven gear rods under the two sets of clamps will move in relative directions. Therefore, under the drive of the driven gear rod, the synchronization rod will move synchronously and push the clamp to move, thereby realizing the secondary limit fixation of the catheter, further improving the limit fixation effect of the catheter;

[0020] 2. The present invention provides a stirring component and a disinfection component. When the driving gear plate rotates, it drives the transmission shaft to rotate. After the transmission shaft rotates, it drives the stirring plate in the disinfectant tank to rotate. After the stirring plate rotates, it drives multiple groups of stirring rods on its end surface to rotate, thereby achieving a stirring effect on the disinfectant in the disinfectant tank, preventing the solute in the disinfectant from precipitating, and improving the quality of the disinfectant. In addition, when the winding roller in the winding box rotates, the driving gear plate at its end drives the driven gear plate to rotate through meshing while driving the winding roller to rotate. After the driven gear plate rotates, it drives the rotating shaft to rotate, so the disinfection cotton sleeved on the outer wall of the rotating shaft will also rotate with the rotating shaft, so that the rotation of the disinfection cotton can be used to achieve the disinfection of the rubber belt during its winding process. Furthermore, the water inlet pipe in the disinfectant tank will introduce the disinfectant into the water supply pipe installed inside the rotating shaft, and then the disinfectant in the water supply pipe will be introduced into the disinfection cotton through the water diversion cotton quilt, ensuring the disinfection function of the disinfection cotton and also achieving the effect of real-time feeding for the disinfection cotton, so that the disinfection cotton has long-lasting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the winding assembly of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the disinfection component of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal structure of the winding box of the present invention;

[0025] Figure 5 It is a schematic diagram of a stirring assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the disinfection cotton of the present invention;

[0027] Figure 7 It is a schematic diagram of a fixing assembly of the present invention;

[0028] Figure 8 It is a schematic diagram of the driving structure of the present invention.

[0029] In the figure: 1. wristband assembly; 101. fixing ring; 102. rubber belt; 103. limit seat; 104. engaging chamber; 2. winding assembly; 201. winding box; 202. driving gear plate; 203. adjusting knob; 204. winding roller; 205. opening; 3. disinfection assembly; 301. rotating shaft; 302. driven gear plate; 303. disinfectant tank; 304. water inlet pipe; 305. chamber; 306. water supply pipe; 307. water diversion cotton; 308. disinfection cotton; 4. stirring assembly; 401. transmission shaft; 402. stirring plate; 403. stirring stick; 5. fixing assembly; 501. splint; 502. driven roller; 503. first gear; 504. relay gear; 505. second gear; 506. driven gear rod; 507. synchronization rod. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] The following describes an embodiment of the present invention based on its overall structure.

[0032] Catheter fixation devices for hemodialysis, such as Figure 1-Figure 8 As shown, the bracelet assembly 1 includes a fixed ring 101, and a rubber belt 102 is provided at the bottom end of the fixed ring 101 and is sleeved with the inside of the fixed ring 101, and one end of the rubber belt 102 extends to the inside of the fixed ring 101 and is slidably connected to the inner wall of the fixed ring 101, and a limiting seat 103 is fixed at the top of the fixed ring 101, and a clamping cavity 104 for clamping a catheter is opened inside the limiting seat 103.

[0033] like Figure 1-Figure 3 As shown, a winding assembly 2 is provided between the fixing ring 101 and the rubber belt 102 to adjust the length of the rubber belt 102;

[0034] Specifically, the winding assembly 2 includes a winding box 201 fixed to the bottom end of the fixed ring 101, and driving gear plates 202 are installed on the inner walls on both sides of the winding box 201, and the ends of a group of driving gear plates 202 are synchronously connected to the adjustment knobs 203 installed on the outer wall of the winding box 201, and a winding roller 204 is fixedly connected between the two groups of driving gear plates 202, and a through hole 205 for assisting the rubber belt 102 to enter and exit is opened at the bottom end of the winding box 201.

[0035] like Figure 3 and Figure 6 , a disinfection assembly 3 is installed inside the winding box 201 to achieve disinfection of the rubber belt 102;

[0036] Specifically, the disinfection component 3 includes a rotating shaft 301 installed below the winding roller 204 and located inside the winding box 201, and there are two groups of rotating shafts 301 and they are symmetrically distributed. The ends of each group of rotating shafts 301 are synchronously connected to a driven gear plate 302, and the driven gear plate 302 is meshed with the adjusting knob 203. A disinfectant liquid tank 303 is fixed on the outer wall of the other side of the winding box 201 on the outer side of the rotating shaft 301, and a chamber 305 for loading disinfectant is installed inside the disinfectant liquid tank 303, and a water inlet pipe 304 extending to the inside of the rotating shaft 301 is installed in the chamber 305, and a disinfectant cotton 308 is sleeved on the outer wall of the rotating shaft 301, and a water supply pipe 306 connected to the water inlet pipe 304 is installed inside the rotating shaft 301, and a water guide cotton 307 extending to the inside of the disinfectant cotton 308 is arranged inside the water supply pipe 306.

[0037] like Figure 4-Figure 5 As shown, a stirring assembly 4 is provided in the disinfectant tank 303 to achieve stirring of the disinfectant;

[0038] Specifically, the stirring assembly 4 includes a stirring disk 402 installed on the inner wall of the disinfectant tank 303, and the end of the stirring disk 402 is fixedly connected to a transmission shaft 401 extending to the outside of the disinfectant tank 303 and synchronously connected to the driving gear disk 202, and the transmission shaft 401 is sealed with the inner wall of the disinfectant tank 303, and a stirring rod 403 is fixed to the end of the stirring disk 402, and the stirring rod 403 has multiple groups and is distributed in a ring on the end surface of the stirring disk 402.

[0039] like Figure 7-Figure 8 As shown, a fixing assembly 5 is installed inside the engaging cavity 104 to achieve secondary position limiting and fixing of the catheter;

[0040] Specifically, the fixing assembly 5 includes a clamping plate 501 disposed inside the limiting seat 103, and the clamping plates 501 are provided in two groups and are symmetrically disposed, and the clamping plates 501 are also slidably connected to the inner wall of the limiting seat 103, and a driving structure for driving the clamping plates 501 is also installed inside the limiting seat 103 below the clamping plates 501;

[0041] Furthermore, the driving structure includes a driven roller 502 installed at the bottom end of the limit seat 103, and the bottom end portion of the driven roller 502 extends into the fixed ring 101 and contacts the top wall of the rubber belt 102, and a first gear 503 and a relay gear 504 are respectively arranged on both sides of the driven roller 502, and the driven roller 502 is transmission-connected to the first gear 503 and the relay gear 504 through a transmission turntable and a transmission belt, and one side of the relay gear 504 is meshedly connected with a second gear 505, and the top ends of the first gear 503 and the second gear 505 are meshedly connected with a driven gear rod 506, and each set of driven gear rods 506 is slidingly connected to the inner wall of the limit seat 103, and the top ends of each set of driven gear rods 506 are fixedly connected with a synchronization rod 507, and each set of synchronization rods 507 is slidingly connected to the inner wall of the limit seat 103, and the two sets of synchronization rods 507 are respectively connected to the two sets of clamps 501.

[0042] The working principle of the present invention is as follows: first, the device is inserted from the patient's hand to the front of the needle insertion position, and then the device can be fixed to the patient's arm. Specifically, by rotating the adjusting knob 203, the adjusting knob 203 will drive the driving gear plate 202 to rotate, and the driving gear plate 202 will drive the winding roller 204 to rotate, so the winding roller 204 will wind up the rubber belt 102 until the device is adapted to the patient's arm, that is, the device will not shake or shift, and then the catheter can be inserted into the engaging cavity 104 opened by the limiting seat 103 to achieve preliminary limiting fixation of the catheter;

[0043] During the adjustment and movement of the rubber belt 102, the driven roller 502 is driven to rotate by friction. After the driven roller 502 rotates, the first gear 503 and the relay gear 504 on both sides thereof are driven to rotate by transmission. After the relay gear 504 rotates, the second gear 505 is driven to rotate in the opposite direction of the first gear 503 by meshing. Under the action of the first gear 503 and the second gear 505, the driven gear rods 506 under the two groups of clamping plates 501 move in relative directions. Therefore, under the drive of the driven gear rod 506, the synchronization rod 507 moves synchronously and pushes the clamping plate 501 to move, thereby realizing secondary position limiting and fixing of the catheter, and further improving the position limiting and fixing effect of the catheter.

[0044] When the driving gear plate 202 rotates, it drives the transmission shaft 401 to rotate, and the transmission shaft 401 rotates, which drives the stirring plate 402 in the disinfectant tank 303 to rotate. The stirring plate 402 rotates, which drives the multiple groups of stirring rods 403 on its end surface to rotate, thereby achieving a stirring effect on the disinfectant in the disinfectant tank 303, preventing the solute in the disinfectant from precipitating, and improving the quality of the disinfectant.

[0045] In addition, when the winding roller 204 in the winding box 201 rotates, the driving gear plate 202 at its end drives the driven gear plate 302 to rotate through meshing while driving the winding roller 204 to rotate. After the driven gear plate 302 rotates, it drives the rotating shaft 301 to rotate. Therefore, the disinfection cotton 308 sleeved on the outer wall of the rotating shaft 301 will also rotate with the rotating shaft 301, so that the rotation of the disinfection cotton 308 can be used to achieve the disinfection of the rubber belt 102 during the winding process.

[0046] Furthermore, the water inlet pipe 304 in the disinfectant tank 303 will introduce the disinfectant into the water supply pipe 306 installed inside the rotating shaft 301, and then the disinfectant in the water supply pipe 306 will be introduced into the disinfectant cotton 308 through the water-guiding cotton 307, thereby ensuring the disinfection function of the disinfectant cotton 308 and also achieving the effect of real-time feeding for the disinfectant cotton 308, so that the disinfectant cotton 308 has long-lasting effect.

[0047] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A catheter fixing device for hemodialysis, comprising a bracelet assembly (1), characterized in that: The wristband assembly (1) comprises a fixing ring (101), and a rubber band (102) sleeved with the inside of the fixing ring (101) is arranged at the bottom end of the fixing ring (101), and one end of the rubber band (102) extends into the inside of the fixing ring (101) and is slidably connected with the inner wall of the fixing ring (101), and a limiting seat (103) is fixed at the top end of the fixing ring (101), and a clamping cavity (104) for clamping a catheter is provided inside the limiting seat (103); A winding assembly (2) is provided between the fixing ring (101) and the rubber belt (102) to adjust the length of the rubber belt (102); the winding assembly (2) comprises a winding box (201) fixed to the bottom end of the fixing ring (101), and a disinfection assembly (3) is installed inside the winding box (201) to disinfect the rubber belt (102); a fixing assembly (5) is installed inside the engaging cavity (104) to achieve secondary limiting fixation of the catheter.

2. The catheter fixing device for hemodialysis according to claim 1, characterized in that: Driving gear plates (202) are installed on the inner walls of both sides of the winding box (201), and the ends of one group of driving gear plates (202) are synchronously connected to the adjusting knobs (203) installed on the outer wall of the winding box (201), and a winding roller (204) is fixedly connected between the two groups of driving gear plates (202). The bottom end of the winding box (201) is provided with a through opening (205) for assisting the rubber belt (102) to enter and exit.

3. The catheter fixing device for hemodialysis according to claim 2, characterized in that: The disinfection assembly (3) includes a rotating shaft (301) installed below the winding roller (204) and located inside the winding box (201), and there are two groups of rotating shafts (301) that are symmetrically distributed. The end of each group of rotating shafts (301) is synchronously connected to a driven gear plate (302), and the driven gear plate (302) is meshed with the adjustment knob (203).

4. The catheter fixing device for hemodialysis according to claim 3, characterized in that: A disinfectant liquid tank (303) is fixed on the outer wall of the other side of the winding box (201) on the outer side of the rotating shaft (301), and a chamber (305) for loading disinfectant is installed inside the disinfectant liquid tank (303), and a water inlet pipe (304) extending to the inside of the rotating shaft (301) is installed in the chamber (305), and a disinfectant cotton (308) is sleeved on the outer wall of the rotating shaft (301), and a water supply pipe (306) connected to the water inlet pipe (304) is installed inside the rotating shaft (301), and a water guide cotton (307) extending to the inside of the disinfectant cotton (308) is arranged inside the water supply pipe (306).

5. The catheter fixing device for hemodialysis according to claim 3, characterized in that: The disinfectant tank (303) is provided with a stirring assembly (4) to achieve stirring of the disinfectant. The stirring assembly (4) comprises a stirring disc (402) mounted on the inner wall of the disinfectant tank (303), and the end of the stirring disc (402) is fixedly connected with a transmission shaft (401) extending to the outside of the disinfectant tank (303) and synchronously connected to the driving gear disc (202), and the transmission shaft (401) is sealed with the inner wall of the disinfectant tank (303). A stirring rod (403) is fixed at the end of the stirring disc (402), and there are multiple groups of stirring rods (403) distributed in an annular manner on the end surface of the stirring disc (402).

6. The catheter fixing device for hemodialysis according to claim 1, characterized in that: The fixing assembly (5) includes a clamping plate (501) arranged inside the limiting seat (103), and the clamping plates (501) are provided in two groups and are symmetrically arranged. The clamping plates (501) are also slidably connected to the inner wall of the limiting seat (103), and a driving structure for driving the clamping plates (501) is also installed inside the limiting seat (103) below the clamping plates (501).

7. The catheter fixing device for hemodialysis according to claim 6, characterized in that: The driving structure comprises a driven roller (502) mounted at the bottom end of the limiting seat (103), and the bottom end portion of the driven roller (502) extends into the fixing ring (101) and contacts the top wall of the rubber belt (102), and a first gear (503) and a relay gear (504) are respectively arranged on both sides of the driven roller (502), and the driven roller (502) is connected to the first gear (503) and the relay gear (504) through a transmission turntable and a transmission belt.

8. The catheter fixing device for hemodialysis according to claim 7, characterized in that: One side of the relay gear (504) is meshedly connected with the second gear (505), and the top ends of the first gear (503) and the second gear (505) are meshedly connected with driven gear rods (506), and each set of the driven gear rods (506) is slidably connected to the inner wall of the limit seat (103).

9. The catheter fixing device for hemodialysis according to claim 8, characterized in that: The top end of each set of driven gear rods (506) is fixedly connected with a synchronization rod (507), and each set of synchronization rods (507) is slidably connected to the inner wall of the limit seat (103), and the two sets of synchronization rods (507) are respectively connected to the two sets of clamping plates (501).

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