Hemodialysis catheter fixing device

Abstract

The utility model discloses a hemodialysis catheter fixing device which comprises two catheter fixing mechanisms arranged at intervals and an adjusting rod connected between the two catheter fixing mechanisms and used for adjusting the distance between the two catheter fixing mechanisms. The pipe fixing mechanism comprises a clamping mechanism and a pipe fixing assembly connected to the upper end of the clamping mechanism, and the pipe fixing assembly comprises a first fastener connected to the upper end of the clamping mechanism, a second fastener with one end connected with the first fastener through a hinge piece and a pipe fixing body connected with the second fastener and used for fixing a hemodialysis pipeline. The second fastening piece can rotate along the hinge piece, after a catheter placing limb is fixed in the fastening cavity, the rod body is used for adjusting the distance between the catheter fixing body and the catheter placing limb, the position of the rod body is locked through the locking piece till the dialysis catheter is fixed in the catheter fixing groove, and after the position of the catheter fixing body is locked through the locking piece, the rod body is locked through the locking piece. The hemodialysis pipeline and the limbs of a patient can be firmly fixed together, so that the hemodialysis pipeline is prevented from falling off.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a hemodialysis catheter fixing device. 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 containing electrolytes at concentrations similar to those in the body exchange substances inside and outside the hollow fibers through the principles of diffusion, ultrafiltration, adsorption and convection, thereby removing metabolic waste from the body, maintaining electrolyte and acid-base balance, and removing excess water from the body. The entire process of returning the purified blood is called hemodialysis.

[0003] Before hemodialysis, patients need to have deep vein catheterization, and the purified blood needs to be returned through the catheter. Hemodialysis usually lasts for more than 4 hours, so the hemodialysis line needs to be fixed. Currently, medical tape is often used to fix the dialysis line, but this method of fixation is easy to fall off due to patient activities or skin sweating. A loosely fixed hemodialysis line is prone to the risk of falling off. Utility Model Content

[0004] Aiming at the technical problem in the prior art that the hemodialysis tubing is fixed by medical tape, and the medical tape is easily fallen off due to the patient's activities or sweating, which may cause the risk of the tube coming off, the utility model provides a hemodialysis catheter fixing device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hemodialysis tube fixing device comprises two tube fixing mechanisms arranged at intervals and an adjusting rod connected between the two tube fixing mechanisms for adjusting the distance between the two tube fixing mechanisms, wherein the adjusting rod is detachably connected to the two tube fixing mechanisms respectively;

[0007] The tube fixing mechanism comprises a clamping mechanism and a tube fixing assembly connected to the upper end of the clamping mechanism, the tube fixing assembly comprises a first fastener connected to the upper end of the clamping mechanism, a second fastener connected to the first fastener at one end through a hinge, and a tube fixing body connected to the second fastener for fixing the hemodialysis pipeline, the second fastener can rotate along the hinge, and a positioning mechanism is connected to the non-hinge ends of the first fastener and the second fastener for locking the movable second fastener, when the second fastener is locked, a fastening cavity for fixing the patient's limb is formed between the first fastener and the second fastener; the tube fixing body comprises a tube fixing body arranged in the fastening cavity, a rod body connected to the tube fixing body at one end and also movably connected to the second fastener, and a locking member detachably connected to the rod body for locking the position of the rod body, a plurality of tube fixing grooves for fixing the hemodialysis pipeline are arranged on the tube fixing body, when the tube-placed limb is fixed in the fastening cavity, the rod body is used to adjust the distance between the tube fixing body and the tube-placed limb, and the position of the rod body is locked by the locking member.

[0008] Furthermore, the fixed tube body also includes an external boss fixedly connected to the outer wall of the second fastener, a penetration cavity provided in the external boss and extending toward the interior of the second fastener for allowing the rod body to extend into the fastening cavity, and a spring penetrated on the rod body and distributed between the external boss and the locking member. The outer periphery of the rod body is provided with an external thread, and the locking member is a locking nut threadedly connected to the external thread.

[0009] Furthermore, the fixed tube body is in an arc shape, and the contact surface with the tube-placed limb is a flexible contact surface.

[0010] Furthermore, the first fastener is provided with a semicircular first fastening groove recessed toward the outside of the first fastener, and the second fastener is provided with a semicircular second fastening groove recessed toward the outside of the second fastener. When the first fastener and the second fastener are locked, the first fastening groove and the second fastening groove can be assembled to form the fastening cavity; the groove wall of the first fastening groove is provided with a plurality of regulating airbags arranged at intervals, and an injection terminal capable of connecting to an air source for injecting air into the regulating airbag is provided on the outer wall of the first fastener.

[0011] Furthermore, the non-hinge end of the first fastener has a first positioning wing that protrudes horizontally in a direction away from the first fastening groove, and the outer wall of the second fastener has a second positioning wing whose position corresponds to the first positioning wing, and the positioning mechanism can be detachably connected to the first positioning wing and the second positioning wing to prevent the first fastener and the second fastener from separating in the circumferential direction.

[0012] Furthermore, the positioning mechanism includes two positioning holes which are respectively perpendicular and correspondingly penetrate the first positioning wing and the second positioning wing, and a positioning rod which is clamped or screwed in the positioning holes.

[0013] Furthermore, the positioning mechanism includes a positioning protrusion formed by extending from the lower end surface of the first positioning side wing in a direction away from the lower end surface, and a positioning recess provided on the upper end surface of the second positioning side wing and capable of being engaged with the positioning protrusion, and the positioning recess is recessed from the upper end surface of the second positioning side wing in a direction away from the upper end surface.

[0014] Furthermore, the clamping mechanism includes an L-shaped base plate and a clamping assembly connected to the base plate, the base plate includes a horizontal plate whose upper end surface is connected to the fixed pipe assembly and a vertical plate vertically fixed to one side of the horizontal plate, and the clamping assembly is movably connected to the vertical plate.

[0015] Furthermore, the clamping assembly includes a clamping plate distributed below the horizontal plate, two connecting ears fixedly provided on one side of the clamping plate and arranged at intervals, two mounting seats provided on the side wall of the vertical plate and arranged at intervals, a hinge shaft connecting the mounting seat with the connecting ear shafts, and a torsion spring sleeved on the hinge shaft, the two connecting ears are located between the two mounting seats, and the torsion spring is located between the two connecting ears.

[0016] Furthermore, the bottom surface of the horizontal plate is covered with an anti-slip layer, and a first arc clamping groove is provided on the lower end surface of the horizontal plate, which is recessed toward the direction close to the fixed pipe assembly; the upper end surface of the clamping plate is also covered with an anti-slip layer, and a second arc clamping groove is provided at the corresponding position of the clamping plate.

[0017] In summary, the beneficial effects of the utility model are as follows: 1. Two tube fixing mechanisms capable of adjusting the spacing can, when used together, one can fix the catheter placement site, and the other can fix the forearm limb of the patient undergoing hemodialysis. After the limb is fixed in the fastening cavity, the hemodialysis pipeline is firmly fixed by the tube fixing groove on the tube fixing body arranged in the fastening cavity to prevent the pipeline from slipping. 2. The adjusting rod is a telescopic rod that can quickly adjust the positions of the two tube fixing mechanisms according to the length of the limb, which is flexible and practical. 3. In the fastening cavity, a plurality of adjusting airbags arranged on the inner wall of the first fastening groove can be used to adjust the tightness of the fastening cavity, which is comfortable to touch and flexible to adjust. In addition, a breathable gap is left between the adjusting airbags, so that even if the dialysis limb is fixed in the fastening cavity, good ventilation and air permeability can be achieved to improve comfort. Fourth, the fixing device is fixed by the cooperation of the torsion spring and the clamping plate to achieve quick clamping, and the clamping plate and the horizontal plate can be clamped on the plate-like object, and the first arc clamping groove and the second arc clamping groove cooperate to allow the clamping mechanism to clamp on the round rod object, for example, after disassembly, it can be independently clamped on the bed rail for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a hemodialysis catheter fixing device provided by the utility model.

[0019] Figure 2 It is a side view of the pipe fixing mechanism in the utility model.

[0020] In the figure, 100-adjusting rod, 200-clamping mechanism, 210-base plate, 211-horizontal plate, 2110-first arc clamping groove, 212-vertical plate, 220-clamping assembly, 221-clamping plate, 2210-second arc clamping groove, 222-connecting ear, 223-mounting seat, 224-hinge shaft, 225-torsion spring, 300-fixed pipe assembly, 310-first fastener, 311-adjusting airbag, 312-gas injection end, 313-first positioning wing, 320-second fastener, 321-second positioning wing, 330-fixed pipe body, 331-fixed pipe body, 3310-fixed pipe groove, 332-rod body, 333-locking member, 334-external boss, 335-spring, 340-hinge, 350-fastening cavity, 400-positioning rod. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with specific drawings.

[0022] See also Figure 1 The utility model provides a hemodialysis catheter fixing device, including two spaced-apart tube fixing mechanisms and an adjusting rod 100 connected between the two tube fixing mechanisms for adjusting the distance between the two tube fixing mechanisms. The adjusting rod 100 is a telescopic rod that can be extended and retracted, and both ends are respectively screwed to the two tube fixing mechanisms.

[0023] The tube fixing mechanism includes a clamping mechanism 200 and a tube fixing assembly 300 connected to the upper end of the clamping mechanism 200. The tube fixing assembly 300 includes a first fastener 310 connected to the upper end of the clamping mechanism 200, a second fastener 320 connected to the first fastener 310 at one end through a hinge 340, and a tube fixing body 330 connected to the second fastener 320 for fixing the hemodialysis pipeline. The second fastener 320 can rotate along the hinge 340, and a positioning mechanism is connected to the non-hinge ends of the first fastener 310 and the second fastener 320 for locking the movable second fastener 320. When the second fastener 320 is locked, a fastening cavity 350 for fixing the patient's limb is formed between the first fastener 310 and the second fastener 320. The fixed tube body 330 includes a fixed tube body 331 arranged in the fastening cavity 350, a rod body 332 with one end connected to the fixed tube body 331 and also movably connected to the second fastener 320, and a locking piece 333 detachably connected to the rod body 332 for locking the position of the rod body 332. The fixed tube body 331 is provided with a plurality of fixed tube grooves 3310 for fixing the hemodialysis pipeline. The fixed tube grooves 3310 are recessed from the lower end surface of the fixed tube body 331 toward the outside of the fastening cavity 350. When a catheter-placed limb is fixed in the fastening cavity 350, the rod body 332 is used to adjust the distance between the fixed tube body 331 and the catheter-placed limb, and the position of the rod body 332 is locked by the locking piece 333. When fixing the patient's hemodialysis line, the clamping mechanism 200 is used to clamp the fixing device on the bed or the armrest of the chair, the first fastener 310 locked by the positioning mechanism is opened, the catheter-placed limb is placed in the two fastening cavities 350, and the first fastener 310 and the second fastener 320 are locked by the positioning mechanism. The two fastening cavities 350 can fix the catheter-placed part and the patient's forearm respectively, and the position of the rod body 332 in the fastening cavity 350 is adjusted so that the notch of the tube-fixing groove 3310 can face the dialysis line until the dialysis line is fixed in the tube-fixing groove 3310. The distance between the tube-fixing groove 3310 and the limb can be adjusted, and the versatility is stronger. Moreover, when the locking member 333 locks the position of the tube-fixing body 331, the dialysis line can be firmly fixed together with the patient's limb. Even if the arm moves or the dialysis is performed for a long time, the dialysis line has been firmly fixed, thereby reducing the risk of tube removal.

[0024] The clamping mechanism 200 includes an L-shaped base plate 210 and a clamping assembly 220 connected to the base plate 210. The base plate 210 includes a horizontal plate 211 whose upper end surface is connected to the pipe fixing assembly 300 and a vertical plate 212 vertically fixed to one side of the horizontal plate 211. The clamping assembly 220 is movably connected to the vertical plate 212. When the fixing device is fixed to the armrest of a hospital bed or a chair, a stable support is provided for the base plate 210.

[0025] The clamping assembly 220 includes a clamping plate 221 distributed below the horizontal plate 211, two connecting ears 222 fixedly arranged on one side of the clamping plate 221 and arranged at intervals, two mounting seats 223 arranged on the side wall of the vertical plate 212 and arranged at intervals, a hinge shaft 224 axially connecting the mounting seats 223 and the connecting ears 222, and a torsion spring 225 sleeved on the hinge shaft 224. The two connecting ears 222 are located between the two mounting seats 223, and the torsion spring 225 is located between the two connecting ears 222. When clamping and fixing, the clamping plate 221 is opened in a direction away from the horizontal plate 211, and the bed board or armrest board is placed between the horizontal plate 211 and the clamping plate 221. Under the action of the torsion spring 225, the clamping plate 221 and the horizontal plate 211 cooperate to clamp the armrest board or bed board to provide stable support for the fixed limb.

[0026] The bottom surface of the horizontal plate 211 is covered with an anti-skid layer, which can enhance the stability and firmness of the clamping. A first arc clamping groove 2110 is provided on the lower end surface of the horizontal plate 211, which is recessed toward the direction close to the fixed pipe assembly 300; the upper end surface of the clamping plate 221 is also covered with an anti-skid layer, and a second arc clamping groove 2210 is provided at a corresponding position of the clamping plate 221. The first arc clamping groove 2110 and the second arc clamping groove 2210 can cooperate with the circular rod body 332 to clamp. If the adjustment rod 100 is disassembled, the two fixed pipe mechanisms can be disassembled and used. When used independently, they can be clamped with the circular rod body 332, such as being clamped on the bed rails.

[0027] The first fastener 310 is provided with a semicircular first fastening groove recessed toward the outside of the first fastener 310, and the second fastener 320 is provided with a semicircular second fastening groove recessed toward the outside of the second fastener 320. When the first fastener 310 and the second fastener 320 are locked, the first fastening groove and the second fastening groove can be assembled to form the fastening cavity 350. The groove wall of the first fastening groove is provided with a plurality of adjustment airbags 311 arranged at intervals, and an injection end 312 capable of connecting to an air source for injecting air into the adjustment airbags 311 is provided on the outer wall of the first fastener 310. The tightness of the fastening cavity is adjusted by filling the adjustment airbags 311, so that the fastening cavity 350 can be adapted to more patients of different body shapes, and the interval arrangement of the adjustment airbags 311, after filling, the gap between adjacent adjustment airbags 311 facilitates ventilation of the limbs.

[0028] The non-hinged end of the first fastener 310 has a first positioning wing 313 horizontally protruding in a direction away from the first fastening groove, and the outer wall of the second fastener 320 has a second positioning wing 321 corresponding to the first positioning wing 313. The positioning mechanism can be detachably connected with the first positioning wing 313 and the second positioning wing 321 to prevent the first fastener 310 and the second fastener 320 from being separated in the circumferential direction. The first fastener 310 and the second fastener 320 can be opened and closed in the circumferential direction to facilitate the placement of the patient's limb (or arm) in the fastening cavity 350.

[0029] In this embodiment, the positioning mechanism includes two positioning holes that are respectively perpendicular and corresponding to the first positioning wing 313 and the second positioning wing 321, and a positioning rod 400 that is clamped or screwed in the positioning holes. After the arm enters the fastening cavity, the first fastener 310 and the second fastener 320 can be firmly locked by the positioning rod 400 to prevent the first fastener 310 and the second fastener 320 from separating in the circumferential direction, and the plug-in or screw-connection method makes it very convenient to operate the opening or locking.

[0030] In another embodiment, the positioning mechanism includes a positioning protrusion formed by protruding from the lower end surface of the first positioning wing 313 in a direction away from the lower end surface, and a positioning recess provided on the upper end surface of the second positioning wing 321 and capable of engaging with the positioning protrusion, and the positioning recess is recessed from the upper end surface of the second positioning wing 321 in a direction away from the upper end surface. The fastening cavity is opened or locked by engaging the positioning protrusion and the positioning recess, and the operation can be convenient and fast. In order to facilitate the operation of opening the first fastener 310 when the fastening cavity is locked, a pull ring can be fixed on the top surface of the first positioning wing 313 to facilitate the operation of opening the first fastener 310.

[0031] When fixing the pipeline, the fixed pipe body 331 is in an arc shape, which can be fixed to the patient's arm, and the design of multiple fixed pipe grooves 3310 is convenient for flexible selection of fixed pipe positions. The contact surface between the fixed pipe body 331 and the limb where the tube is placed is a flexible contact surface, which improves comfort. Moreover, the fixed pipe groove 3310 set on the fixed pipe body 331 is a constricted structure. When the pipeline is stuck in the fixed pipe groove 3310, the anti-slip effect is better.

[0032] See also Figure 2The fixed tube body 330 also includes an outer boss 334 fixed to the outer wall of the second fastener 320, a through cavity provided in the outer boss 334 and extending toward the inside of the second fastener 320 for allowing the rod 332 to extend into the fastening cavity 350, and a spring 335 provided on the rod 332 and distributed between the outer boss 334 and the locking member 333. The outer periphery of the rod 332 is provided with an external thread, and the locking member 333 is a locking nut threadedly connected to the external thread. The rod 332 can move up and down in the through cavity to adjust the position of the fixed tube according to different body shapes and limbs. The rod 332 is positioned by adjusting the position of the locking nut, and the spring 335 can help the fixed tube body 331 to reset.

[0033] This catheter fixing device: 1. Two tube fixing mechanisms capable of adjusting the spacing, when used together, one can fix the catheter placement site, and the other can fix the forearm limb of the patient undergoing hemodialysis. After the limb is fixed in the fastening cavity, the hemodialysis pipeline is firmly fixed by the tube fixing groove 3310 on the tube fixing body 331 arranged in the fastening cavity to prevent the pipeline from slipping. 2. The adjustment rod 100 is a telescopic rod that can quickly adjust the position of the two tube fixing mechanisms according to the length of the limb, which is flexible and practical. 3. In the fastening cavity 350, a plurality of adjustment airbags 311 arranged on the inner wall of the first fastening groove can be used to adjust the tightness of the fastening cavity 350, which is comfortable to touch and flexible to adjust. In addition, there is a breathable gap between the adjustment airbags 311, so that even if the dialysis limb is fixed in the fastening cavity 350, it can be well ventilated and breathable, thereby improving comfort. Fourth, the fixing device is fixed by the torsion spring 225 and the clamping plate 221 to achieve quick clamping, and the clamping plate 221 cooperates with the horizontal plate 211 to clamp on the plate-like object for use, and the first arc clamping groove 2110 and the second arc clamping groove 2210 cooperate to allow the clamping mechanism 200 to clamp on the circular rod body 332 object for use, for example, after disassembly, it can be independently clamped on the bed rail for use.

[0034] The above are only implementation methods of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure made using the contents of the specification and drawings of the present utility model, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present utility model.

Claims

1. A hemodialysis catheter fixing device, characterized in that: It comprises two pipe fixing mechanisms arranged at intervals and an adjusting rod connected between the two pipe fixing mechanisms for adjusting the distance between the two pipe fixing mechanisms; The tube fixing mechanism comprises a clamping mechanism and a tube fixing assembly connected to the upper end of the clamping mechanism, the tube fixing assembly comprises a first fastener connected to the upper end of the clamping mechanism, a second fastener connected to the first fastener at one end through a hinge, and a tube fixing body connected to the second fastener for fixing the hemodialysis pipeline, the second fastener can rotate along the hinge, and a positioning mechanism is connected to the non-hinge ends of the first fastener and the second fastener for locking the movable second fastener, when the second fastener is locked, a fastening cavity for fixing the patient's limb is formed between the first fastener and the second fastener; the tube fixing body comprises a tube fixing body arranged in the fastening cavity, a rod body connected to the tube fixing body at one end and also movably connected to the second fastener, and a locking member detachably connected to the rod body for locking the position of the rod body, a plurality of tube fixing grooves for fixing the hemodialysis pipeline are arranged on the tube fixing body, when the tube-placed limb is fixed in the fastening cavity, the rod body is used to adjust the distance between the tube fixing body and the tube-placed limb, and the position of the rod body is locked by the locking member.

2. The hemodialysis catheter fixing device according to claim 1, characterized in that: The fixed pipe body also includes an external boss fixedly connected to the outer wall of the second fastener, a penetration cavity provided in the external boss and extending in the inner direction of the second fastener for allowing the rod body to extend into the fastening cavity, and a spring penetrated on the rod body and distributed between the external boss and the locking member. The outer periphery of the rod body is provided with an external thread, and the locking member is a locking nut threadedly connected to the external thread.

3. The hemodialysis catheter fixing device according to claim 2, characterized in that: The fixed tube body is in an arc shape, and the contact surface with the tube-placed limb is a flexible contact surface.

4. The hemodialysis catheter fixing device according to claim 2, characterized in that: The first fastener is provided with a semicircular first fastening groove recessed toward the outside of the first fastener, and the second fastener is provided with a semicircular second fastening groove recessed toward the outside of the second fastener, and when the first fastener and the second fastener are locked, the first fastening groove and the second fastening groove can be combined to form the fastening cavity; The groove wall of the first fastening groove is provided with a plurality of regulating air bags arranged at intervals, and the outer wall of the first fastener is provided with an injection terminal that can be connected to an air source for injecting air into the regulating air bags.

5. The hemodialysis catheter fixing device according to claim 4, characterized in that: The non-hinge end of the first fastener has a first positioning wing that protrudes horizontally in a direction away from the first fastening groove, and the outer wall of the second fastener has a second positioning wing whose position corresponds to the first positioning wing, and the positioning mechanism can be detachably connected to the first positioning wing and the second positioning wing to prevent the first fastener and the second fastener from separating in the circumferential direction.

6. The hemodialysis catheter fixing device according to claim 5, characterized in that: The positioning mechanism comprises two positioning holes which are respectively perpendicular and correspondingly penetrate the first positioning wing and the second positioning wing, and a positioning rod which is clamped or screwed in the positioning holes.

7. The hemodialysis catheter fixing device according to claim 5, characterized in that: The positioning mechanism includes a positioning protrusion extending from the lower end surface of the first positioning side wing in a direction away from the lower end surface, and a positioning recess provided on the upper end surface of the second positioning side wing and capable of engaging with the positioning protrusion, and the positioning recess is recessed from the upper end surface of the second positioning side wing in a direction away from the upper end surface.

8. The hemodialysis catheter fixing device according to any one of claims 1 to 7, characterized in that: The clamping mechanism includes an L-shaped base plate and a clamping assembly connected to the base plate. The base plate includes a horizontal plate whose upper end surface is connected to the fixed pipe assembly and a vertical plate vertically fixed to one side of the horizontal plate. The clamping assembly is movably connected to the vertical plate.

9. The hemodialysis catheter fixing device according to claim 8, characterized in that: The clamping assembly includes a clamping plate distributed below the horizontal plate, two connecting ears fixedly provided on one side of the clamping plate and arranged at intervals, two mounting seats provided on the side wall of the vertical plate and arranged at intervals, a hinge shaft connecting the mounting seats with the connecting ears, and a torsion spring sleeved on the hinge shaft, the two connecting ears are located between the two mounting seats, and the torsion spring is located between the two connecting ears.

10. The hemodialysis catheter fixing device according to claim 9, characterized in that: The bottom surface of the horizontal plate is covered with an anti-slip layer, and a first arc clamping groove is provided on the lower end surface of the horizontal plate, which is recessed toward the fixed pipe assembly; the upper end surface of the clamping plate is also covered with an anti-slip layer, and a second arc clamping groove is provided at a corresponding position of the clamping plate.

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