Catheter for hemodialysis

Abstract

The utility model discloses a catheter for hemodialysis, which belongs to the technical field of medical instruments and comprises a positioning frame, the cross section of the positioning frame in the horizontal direction is arc-shaped, and four straps for fixing a device are fixedly arranged on the side wall of the positioning frame. The four sets of straps are evenly distributed on the two sides of the positioning frame in pairs, bonding areas are arranged at the tail ends of the straps in the same set, two parallel supports are fixed to the upper end of the positioning frame, and a positioning cylinder is fixedly arranged between the two supports; through the straps arranged on the positioning frame and the positioning cylinder fixedly arranged on the positioning frame, when the device is used, a worker fixes the arc-shaped positioning frame on the limb of a patient, the straps are used for fixing, and a hand wheel on a support is rotated to adjust the movement of a positioning injector slidably arranged on the positioning cylinder; and the device can be injected on a proper part of a patient.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a catheter for hemodialysis. Background Art

[0002] Hemodialysis is the process of draining blood from the body to the outside, removing metabolic waste and excess water in the blood through a dialyzer, and then returning the purified blood to the body. It is one of the renal replacement therapies for patients with acute and chronic renal failure. It drains blood from the body to the outside, exchanges substances through diffusion / convection in the dialysis machine, removes metabolic waste from the body, maintains electrolyte and acid-base balance; at the same time, it removes excess water from the body and returns the purified blood.

[0003] The hemodialysis catheter is a catheter used during the hemodialysis process. The body of this catheter is small, and it is very inconvenient to pick up the catheter. When medical staff remove the needle, the needle may puncture the patient's blood vessels. The catheter is usually fixed to the patient's arm with medical tape, and the tape will cause pain to the patient during the removal process.

[0004] Therefore, we propose a hemodialysis catheter to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that a hemodialysis catheter is a catheter used in the hemodialysis process, the body of the catheter is relatively small, and it is very inconvenient to pick up the catheter. During the process of removing the needle, the needle may puncture the patient's blood vessel, and the catheter is generally fixed to the patient's arm with medical tape, which may cause pain to the patient during the removal process. The utility model proposes a hemodialysis catheter.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A catheter for hemodialysis comprises a positioning frame, wherein the cross-section of the positioning frame in the horizontal direction is arc-shaped, and four straps for fixing devices are fixedly arranged on the side walls of the positioning frame, and four groups of the straps are evenly distributed on both sides of the positioning frame in groups of two, and bonding areas are provided on the ends of the straps in the same group, and two mutually parallel brackets are fixed on the upper end of the positioning frame, and a positioning cylinder is fixedly arranged between the two brackets, a slide groove is opened on the positioning cylinder, a positioning syringe is slidably arranged on the slide groove, and a control mechanism for controlling the movement of the positioning syringe is provided on the positioning cylinder.

[0008] Preferably, two sponge pads are fixedly provided on the lower end surface of the positioning frame, and the two sponge pads are evenly distributed at both ends of the positioning frame, and the length of the sponge pads is not less than the length of the positioning frame.

[0009] Preferably, the control mechanism comprises a threaded rod rotatably arranged between the two brackets, the positioning syringe is threadedly connected to the threaded rod, and a limiting unit for controlling the lateral movement of the positioning syringe is provided on the inner wall of the positioning cylinder.

[0010] Preferably, the limiting unit comprises a clamping plate fixedly arranged on the inner wall of the positioning tube, and a clamping groove matching the clamping plate is formed on the outer wall of the positioning syringe.

[0011] Preferably, a hand wheel is fixedly provided on one end of the threaded rod, and an anti-slip sleeve is sleeved on the outer circumference of the hand wheel.

[0012] Preferably, an injection tube is fixedly provided on the positioning syringe, and the injection tube is located in the positioning cylinder.

[0013] To sum up, the technical effects and advantages of the utility model are as follows: the hemodialysis catheter, through the shoulder strap set on the positioning frame and the positioning cylinder fixed on the positioning frame, realizes that when using the device, the staff fixes the arc-shaped positioning frame on the patient's limb, fixes it with the shoulder strap, and rotates the hand wheel on the bracket to adjust the movement of the positioning syringe sliding on the positioning cylinder, so that the device can be injected into the appropriate part of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a partial schematic diagram of the structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the bottom structure of the utility model;

[0017] Figure 4 It is a schematic side view of the structure of the utility model.

[0018] In the figure: 1. positioning frame; 2. shoulder strap; 3. bracket; 4. positioning cylinder; 5. slide groove; 6. positioning syringe; 7. sponge pad; 8. threaded rod; 9. clamping plate; 10. clamping groove; 11. hand wheel; 12. injection tube. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] The embodiment of the utility model provides a catheter for hemodialysis, which solves the problem that the catheter for hemodialysis in the prior art is a catheter used in the hemodialysis process. The catheter has a small body and is very inconvenient to pick up. When medical staff are removing the needle, the needle may puncture the patient's blood vessel, and the catheter is generally fixed to the patient's arm with medical tape. During the removal of the tape, the patient will feel pain. By providing a shoulder strap on the positioning frame and a positioning cylinder fixed on the positioning frame, the staff can fix the arc-shaped positioning frame on the patient's limb when using the device, fix it with the shoulder strap, and rotate the hand wheel on the bracket to adjust the movement of the positioning syringe sliding on the positioning cylinder, so that the device can be injected into the appropriate part of the patient.

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Reference Figure 1 A catheter for hemodialysis includes a positioning frame 1, the cross section of the positioning frame 1 in the horizontal direction is arranged in an arc shape, and four straps 2 for fixing the device are fixedly arranged on the side wall of the positioning frame 1.

[0023] Reference Figure 1-3 Two sponge pads 7 are fixedly provided on the lower end surface of the positioning frame 1, and the two sponge pads 7 are evenly distributed at both ends of the positioning frame 1, and the length of the sponge pad 7 is not less than the length of the positioning frame 1. By setting the two sponge pads 7 on the lower end surface of the positioning frame 1, it is achieved that when the positioning frame 1 is fixed on the patient's limbs, the sponge pad 7 with good elasticity can alleviate the discomfort caused by the positioning frame 1 pressing the patient's limbs for a long time.

[0024] The four straps 2 are evenly distributed on both sides of the positioning frame 1 in groups of two, and a bonding area is provided on the end of the same group of straps 2. Two parallel brackets 3 are fixed on the upper end of the positioning frame 1, and a positioning cylinder 4 is fixed between the two brackets 3. The positioning cylinder 4 is provided with a slide groove 5, and a positioning syringe 6 is slidably provided on the slide groove 5, and the positioning cylinder 4 is provided with a control mechanism for controlling the movement of the positioning syringe 6.

[0025] Reference Figure 1-3 The control mechanism includes a threaded rod 8 that is rotatably arranged between the two brackets 3, and the positioning syringe 6 is threadedly connected to the threaded rod 8. A limiting unit for controlling the lateral movement of the positioning syringe 6 is provided on the inner wall of the positioning cylinder 4. By setting the threaded rod 8 between the two brackets 3, when the staff rotates the threaded rod 8, the positioning syringe 6 threadedly connected to the threaded rod 8 moves, so that the positioning syringe 6 can be moved to the appropriate position.

[0026] Reference Figure 1-3 The limiting unit includes a card plate 9 fixedly arranged on the inner wall of the positioning cylinder 4, and a card slot 10 matching the card plate 9 is opened on the outer wall of the positioning syringe 6. By setting the card plate 9 on the positioning cylinder 4 and the card slot 10 on the positioning syringe 6, it is achieved that when the threaded rod 8 is rotated to control the movement of the positioning syringe 6, the positioning syringe 6 can maintain horizontal movement without rotating.

[0027] Reference Figure 2-4 A handwheel 11 is fixedly provided on one end of the threaded rod 8, and an anti-slip sleeve is sleeved on the outer circumference of the handwheel 11. By setting the handwheel 11 on the threaded rod 8, the staff can directly turn the handwheel 11 when the threaded rod 8 needs to be rotated. The anti-slip sleeve on the handwheel 11 increases the friction between the outer surface of the handwheel 11 and the palm of the staff, thereby avoiding slipping during the rotation process.

[0028] Reference Figure 1-3 An injection tube 12 is fixedly provided on the positioning syringe 6 , and the injection tube 12 is located in the positioning cylinder 4 . By means of the injection tube 12 provided on the positioning syringe 6 , the traction positioning of the injection tube 12 is facilitated.

[0029] Working principle:

[0030] By means of the shoulder strap 2 arranged on the positioning frame 1 and the positioning cylinder 4 fixed on the positioning frame 1, it is possible for the staff to fix the arc-shaped positioning frame 1 on the patient's limb when using the device, and then use the shoulder strap 2 to fix it, and rotate the hand wheel 11 on the bracket 3 to adjust the movement of the positioning syringe 6 slidably arranged on the positioning cylinder 4, so that the device can be injected into the appropriate part of the patient.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hemodialysis catheter, comprising a positioning frame (1), characterized in that: The cross-section of the positioning frame (1) in the horizontal direction is arranged in an arc shape, and four straps (2) for fixing the device are fixedly arranged on the side wall of the positioning frame (1), and the four straps (2) are evenly distributed on both sides of the positioning frame (1) in groups of two, and a bonding area is provided on the end of the straps (2) in the same group. Two mutually parallel brackets (3) are fixed on the upper end of the positioning frame (1), and a positioning cylinder (4) is fixedly arranged between the two brackets (3), and a slide groove (5) is provided on the positioning cylinder (4), and a positioning syringe (6) is slidably arranged on the slide groove (5), and a control mechanism for controlling the movement of the positioning syringe (6) is provided on the positioning cylinder (4).

2. A hemodialysis catheter according to claim 1, characterized in that: Two sponge pads (7) are fixedly arranged on the lower end surface of the positioning frame (1), and the two sponge pads (7) are evenly distributed at both ends of the positioning frame (1), and the length of the sponge pads (7) is not less than the length of the positioning frame (1).

3. A hemodialysis catheter according to claim 1, characterized in that: The control mechanism comprises a threaded rod (8) rotatably arranged between the two brackets (3); the positioning syringe (6) is threadedly connected to the threaded rod (8); and a limiting unit for controlling the lateral movement of the positioning syringe (6) is provided on the inner wall of the positioning cylinder (4).

4. A hemodialysis catheter according to claim 3, characterized in that: The limiting unit comprises a clamping plate (9) fixedly arranged on the inner wall of the positioning cylinder (4), and a clamping groove (10) matching the clamping plate (9) is provided on the outer wall of the positioning syringe (6).

5. A hemodialysis catheter according to claim 3, characterized in that: A hand wheel (11) is fixedly arranged on one end of the threaded rod (8), and an anti-slip sleeve is sleeved on the outer peripheral surface of the hand wheel (11).

6. A hemodialysis catheter according to claim 1, characterized in that: An injection tube (12) is fixedly arranged on the positioning syringe (6), and the injection tube (12) is located in the positioning cylinder (4).

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