Improved novel hemodialysis catheter

Abstract

The utility model discloses an improved novel hemodialysis catheter which comprises a catheter body, a fixing device, a first blood outlet pipe, a second blood outlet pipe and a fixed connecting base, the first blood outlet pipe and the second blood outlet pipe are arranged on the fixed connecting base and communicated with one end of the catheter body, and the fixing device is arranged on the catheter body. The fixing device is provided with a sealing channel in a penetrating mode from the left end to the right end, the catheter body penetrates through the sealing channel and extends out of the left end and the right end of the fixing device, a sealing ring is arranged on a catheter body of the catheter body, and a biological adhesive binding face is arranged on the side, away from the fixing device, of the sealing ring. According to the hemodialysis catheter, the actual hemodialysis requirement is met, hemodialysis blood transportation is achieved, meanwhile, position deviation of the catheter body is eradicated, the stability of the catheter body is improved, and the situation that bacteria invade due to insertion of a hemodialysis catheter is eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical treatment, in particular to an improved novel hemodialysis catheter. Background Art

[0002] Hemodialysis is the most effective method for treating uremia, acute renal failure and other diseases. It can remove metabolic toxins, eliminate water and regulate water, electrolyte acid-base imbalance, and maintain kidney function. Most patients undergo hemodialysis for the first time using intravenous cannulation as the dialysis vascular access. Effective fixation of the hemodialysis catheter and prevention of bacterial invasion during hemodialysis are the prerequisites for ensuring treatment. If the patient or other personnel accidentally pull or tug on the hemodialysis catheter, the catheter may shift or even fall out, affecting blood flow.

[0003] Chinese patent CN202020580506.5 discloses a central venous catheter, comprising: a hemodialysis tube, an antibacterial sleeve, a fixed adhesive, a flow rate regulating device, an outflow blood vessel, a bleeding one-way valve device, a return blood vessel and a blood return one-way valve device, wherein the fixed adhesive is arranged on the flow rate regulating device, the outflow blood vessel is arranged on the fixed adhesive and arranged in the flow rate regulating device, the return blood vessel is arranged on the fixed adhesive and arranged in the flow rate regulating device, the bleeding one-way valve device is arranged in the outflow blood vessel, the blood return one-way valve device is arranged in the return blood vessel, the antibacterial sleeve is arranged on the fixed adhesive and arranged on a side away from the flow rate regulating device, the hemodialysis tube is arranged on the antibacterial sleeve, the antibacterial sleeve is arranged between the hemodialysis tube and the fixed adhesive, the fixed adhesive is arranged between the antibacterial sleeve and the flow rate regulating device, and the flow rate regulating device is arranged between the outflow blood vessel and the fixed adhesive. This utility model secures the hemodialysis tube to the patient's skin by placing a fixing adhesive on the hemodialysis tube and having medical staff use medical tape to adhere to the fixing adhesive. This fixing method cannot fix the position of the hemodialysis tube. The fixing method is relatively simple and can cause the position of the hemodialysis tube to change if not handled with care, resulting in misplacement of the puncture needle. The antibacterial sleeve seals the subcutaneous channel, but the sealing effect is poor, and the possibility of infection still exists before sealing. Summary of the Invention

[0004] The main purpose of the present invention is to overcome the defects of the above-mentioned background technology and provide an improved new hose. The present invention can meet the actual needs of hemodialysis, realize the transportation of dialysis blood, prevent the position deviation of the hemodialysis catheter, improve the stability of the hemodialysis catheter, and prevent bacterial invasion caused by the insertion of the hemodialysis tube by combining the rubber sealing sleeve and the biological adhesive.

[0005] In order to achieve the above object, the utility model provides an improved novel hemodialysis catheter, fixed device, first bleeding pipe, second bleeding pipe and fixed connecting seat, the first bleeding pipe and second bleeding pipe are located on the fixed connecting seat and with one end of the catheter body intercommunication, the fixed device is located on the catheter body, the fixed device is provided with a sealed passage from left end to right end, the catheter body is penetrated from the sealed passage and extends outside the both ends of the fixed device, the pipe body of the catheter body is provided with a sealing ring, and a biological adhesive adhering surface is arranged on the side, away from the fixed device, of the sealing ring. When performing central venous long-term catheter implantation, the operator combines the catheter body with the tunneling device, extends the catheter with a cuff into the patient's subcutaneous tissue, places the catheter vascular end into the central vein, and uses the sealing ring to close the subcutaneous tunnel outlet. The catheter body is fixed on the patient's body by using the fixed device, so as to prevent the displacement of the hemodialysis catheter caused by the touch of the patient or others. At the same time, the subcutaneous tunnel is further closed by using the rubber sealing sleeve, and the sealing ring and the rubber sealing sleeve are used in cooperation to prevent bacterial infection.

[0006] Further, the bottom surface of the fixed device is provided with a double-sided tape, one side of the double-sided tape is attached to the bottom surface of the fixed device, and the other side of the double-sided tape is used to attach to the skin of the patient. The double-sided tape at the bottom end of the fixed device is attached to the skin of the patient, so as to fix the catheter body.

[0007] Further, the fixed device is provided with extension ears on both sides and parallel to the sealed passage, the bottom surface of the extension ear is in the same plane as the bottom surface of the fixed device, and the double-sided tape extends to the bottom surface of the extension ear on both sides. By providing the extension ear and the double-sided tape at the bottom end of the extension ear, the fixation of the catheter body is strengthened.

[0008] Further, a soft pad is arranged in the sealed passage, and the sealed passage is connected with the outer side wall of the catheter body through the soft pad. The soft pad prevents the catheter body from being abraded when the fixed device is moved.

[0009] Further, the top of the fixed device is provided with a U-shaped clamping groove. The nurse further fixes the fixed device to the skin of the patient by sticking the medical tape into the U-shaped clamping groove.

[0010] Further, the sealing ring is convexly arranged, the sealing ring comprises a bottom ring and a convex ring, the bottom ring and the convex ring are coaxially arranged in one piece, and the top surface of the bottom ring and the side wall of the convex ring are provided with a biological adhesive adhering surface. By arranging the biological adhesive adhering surface on the top surface of the bottom ring and the side wall of the convex ring, the bottom ring and the convex ring can better seal the subcutaneous tunnel opening through the biological adhesive adhering surface.

[0011] Further, the bottom ring top side is provided with an inclined groove. It is convenient to pick up the hemodialysis catheter and remove the medical adhesive on the biological adhesive adhering surface.

[0012] Further, the sealing ring is made of silica gel. The sealing ring is an elastic sealing ring, which is convenient to close the subcutaneous tunnel opening and prevent deformation from causing sealing failure.

[0013] The beneficial effects of the utility model include: through cooperation of the catheter body and the fixing device, after the catheter body enters the vein of a patient, the subcutaneous tunnel gap is closed through the sealing ring and the biological adhesive adhering surface on the surface of the sealing ring, the closing effect is strengthened, bacteria entering the patient's body is avoided to the greatest extent, then the catheter body is fixed on the skin of the patient through the fixing device and the double-sided adhesive tape of the extension ear bottom, the possibility of bacterial infection is reduced in the whole process, meanwhile, the stability of the catheter body is strengthened, and medical harm caused by position deviation of the catheter body is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the improved hemodialysis catheter in the utility model embodiment;

[0015] Figure 2 It is a structure schematic view of the fixing device in the utility model embodiment;

[0016] Figure 3 It is a structure schematic view of the rubber sealing sleeve and the extension ear in the utility model embodiment;

[0017] Figure 4 It is a structure schematic view of the sealing ring in the utility model embodiment;

[0018] Figure 5 It is a structure schematic view of the bottom ring and the convex ring in the utility model embodiment;

[0019] Reference signs: 1, catheter body; 2, fixing device; 4, sealing channel; 5, rubber sealing sleeve; 6, extension ear; 8, first bleeding pipe; 9, second bleeding pipe; 10, fixed connecting seat; 41, soft pad; 51, medical adhesive tape; 52, sealing ring; 53, biological adhesive adhering surface; 54, bottom ring; 55, convex ring; 56, inclined groove; 61, double-sided adhesive tape; 62, U-shaped clamping groove. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical schemes and beneficial effects to be solved in the utility model embodiment more clearly understood, the utility model will be further described in detail in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit connection.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined. Example 1

[0024] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The improved novel hemodialysis catheter disclosed in Example 1 includes a catheter body 1, a fixing device 2, a first blood outlet blood vessel 8, a second blood outlet blood vessel 9 and a fixed connection seat 10. The first blood outlet blood vessel 8 and the second blood outlet blood vessel 9 are arranged on the fixed connection seat 10 and are connected to one end of the catheter body 1. The fixing device 2 is arranged on the catheter body 1. The fixing device 2 is provided with a sealing channel 4 from the left end to the right end. The catheter body 1 passes through the sealing channel 4 and extends out of the left and right ends of the fixing device 2. A sealing ring 52 is provided on the tube body of the catheter body 1. A bioadhesive bonding surface 53 is provided on the sealing ring 52 on the side away from the fixing device 2; a double-sided sticker 61 is provided on the bottom surface of the fixing device 2, one side of the double-sided sticker 61 is bonded to the bottom surface of the fixing device 2, and the other side of the double-sided sticker 61 is used to bond to the patient's skin; extension ears 6 are provided on both sides of the fixing device 2 parallel to the sealing channel 4, the bottom surface of the extension ears 6 is coplanar with the bottom surface of the fixing device 2, and the double-sided sticker 61 extends to the bottom surfaces of the extension ears 6 on both sides; a U-shaped slot 62 is provided on the top of the fixing device 2 and along the extension direction of the extension ears 6;

[0025] The hemodialysis catheter used in the utility model is a tunneled type CUFF catheter, and the biological adhesive used in the utility model is BioAdheSil glue, which is compatible with human skin and does not cause adverse reactions of the host and does not corrode the catheter made of silica gel; after the catheter body 1 is left in the vein, the catheter body 1 is fixed on the surface of the skin of the patient through the fixing device 2 on the catheter body 1, that is, the catheter body 1 is fixed through the double-sided adhesive 61 on the bottom surface of the extension ear 6 and the fixing device 2, at the same time, the CUFF tube is adhered to the skin of the patient after the catheter body 1 is inserted into the subcutaneous tissue of the patient to form a subcutaneous tunnel, and the sealing ring 52 is adhered to the subcutaneous tunnel opening through the biological adhesive bonding surface 53 to seal the subcutaneous tunnel of the patient. The catheter body 1 is fixed through the double-sided adhesive 61 on the bottom surface of the extension ear 6 and the fixing device 2, and the double-sided adhesive 61 adhered to the bottom surface of the extension ear 6 and the fixing device 2, so that the position of the catheter body 1 is not deviated when the catheter body 1 is used for hemodialysis of the patient, and the occurrence of medical accidents is reduced. At the same time, the nurse fixes the fixing device 2 and the catheter body 1 on the skin of the patient through the fixing device 2 and the medical adhesive tape and the like, which provides sufficient stability to ensure that the position of the hemodialysis catheter 1 will not be deviated, and at the same time, the U-shaped clamping groove 62 structure can prevent the medical adhesive tape from moving left and right to cause the position of the catheter body 1 to be deviated, thereby reducing the occurrence of medical accidents.

[0026] Preferably, the sealing ring 52 is adhered to the subcutaneous tunnel opening through the biological adhesive bonding surface 53 to seal the subcutaneous tunnel of the patient, so that the patient is prevented from being infected with bacteria due to hemodialysis, the sealing effect of the subcutaneous tunnel gap is improved, bacteria are prevented from entering the body of the patient through the subcutaneous tunnel gap between the patient and the catheter body 1 during hemodialysis, and the sealing property and safety during hemodialysis are improved. Embodiment 2

[0027] Please refer to Figure 3 In embodiment 2, the sealing channel 4 is provided with a soft pad 41, and the sealing channel 4 is connected with the outer wall of the catheter body 1 through the soft pad 41; the fixing device 2 is movably arranged on the catheter body 1 through the sealing channel 4, the soft pad 41 is arranged in the bottom of the sealing channel 4, the bottom of the sealing channel 41 is prevented from being rubbed with the catheter body 1 when the position of the fixing device 2 is changed, so that the hemodialysis catheter 1 is prevented from being damaged and medical accidents are avoided, and at the same time, the fixing position of the fixing device 2 can be changed based on the actual situation of the patient through the adjustable fixing device 2, so that the use requirements of different patients are met and the universality of the hemodialysis catheter is improved. Embodiment 3

[0028] Please refer to Figure 4 and Figure 5 In Example 3, the sealing ring 52 is provided in a convex shape. The sealing ring 52 includes a bottom ring 54 and a convex ring 55. The bottom ring 54 and the convex ring 55 are integrally provided coaxially. The top surface of the bottom ring 54 and the side wall of the convex ring 55 are provided with a bioadhesive bonding surface 53; a slanted groove 56 is provided on one side of the top of the bottom ring 54; the sealing ring 52 is made of silicone; by providing the sealing ring 52 in a convex structure, that is, dividing it into a bottom ring 54 and a convex ring 55, the top surface of the bottom ring 54 and the side wall of the convex ring 55 can be formed. The bioadhesive bonding surface is used to seal the patient's subcutaneous tunnel opening to prevent bacterial infection. After the hemodialysis is completed, the medical adhesive on the bioadhesive bonding surface can be dissolved by a non-toxic bioadhesive dissolving agent. The dissolving agent can be poured into and retained through the inclined groove 56 on the top of the bottom ring 54, so as to better dissolve the bioadhesive bonding surface, reduce the workload, and improve the dissolution efficiency. By making the sealing ring 52 out of silicone, the sealing ring 52 can achieve a certain plasticity to meet the needs of various sealing situations. Example 4

[0029] See also Figure 3 In Example 4, a rubber sealing sleeve 5 is provided on the fixing device 2 at one end near the outlet of the catheter body 1, and a medical adhesive tape 51 is provided on the end of the rubber sealing sleeve 5 away from the fixing device 2; the outlet between the catheter body 1 and the patient is sealed by the rubber sealing sleeve 5 at one end of the fixing device 2, and the rubber sealing sleeve 5 is put on the subcutaneous tunnel gap between the patient and the catheter body 1, and is adhered to the patient's skin through the medical adhesive tape 51 on the opening of the rubber sealing sleeve 5, thereby maximizing the sealing effect and improving the sealing performance during hemodialysis.

[0030] The above is further detailed description of the utility model in combination with specific / preferred embodiments, which cannot be deemed as limiting the specific implementation of the utility model to these descriptions. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, they can make several substitutions or variations to the described embodiments, and these substitution or variation manners shall be deemed as belonging to the protection scope of the utility model. In the description of the specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the case of not mutually contradictory, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples. Although the embodiments of the utility model and its advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made in this paper without departing from the protection scope of the patent application.

Claims

1. An improved new hemodialysis catheter, characterized by: The invention comprises a catheter body (1), a fixing device (2), a first blood outlet blood vessel (8), a second blood outlet blood vessel (9) and a fixing connection seat (10), wherein the first blood outlet blood vessel (8) and the second blood outlet blood vessel (9) are arranged on the fixing connection seat (10) and are connected to one end of the catheter body (1), the fixing device (2) is arranged on the catheter body (1), a sealing channel (4) is provided through the fixing device (2) from the left end to the right end, the catheter body (1) passes through the sealing channel (4) and extends out of the left and right ends of the fixing device (2), a sealing ring (52) is provided on the tube body of the catheter body (1), and a bioadhesive bonding surface (53) is provided on the side of the sealing ring (52) away from the fixing device (2).

2. The improved novel hemodialysis catheter according to claim 1, characterized in that: The bottom surface of the fixing device (2) is provided with a double-sided tape (61), one side of the double-sided tape (61) is in contact with the bottom surface of the fixing device (2), and the other side of the double-sided tape (61) is used to be in contact with the patient's skin.

3. The improved novel hemodialysis catheter according to claim 2, characterized in that: Extension ears (6) are provided on both sides of the fixing device (2) parallel to the sealing channel (4); the bottom surface of the extension ear (6) and the bottom surface of the fixing device (2) are in the same plane, and the double-sided tape (61) extends to the bottom surfaces of the extension ears (6) on both sides.

4. The improved novel hemodialysis catheter according to claim 1, characterized in that: A soft pad (41) is provided in the sealing channel (4), and the sealing channel (4) is connected to the outer side wall of the catheter body (1) via the soft pad (41).

5. The improved novel hemodialysis catheter according to claim 3, characterized in that: A U-shaped slot (62) is provided at the top of the fixing device (2) and along the extending direction of the extending ear (6).

6. The improved novel hemodialysis catheter according to claim 1, characterized in that: The sealing ring (52) is arranged in a convex shape, and the sealing ring (52) includes a bottom ring (54) and a convex ring (55). The bottom ring (54) and the convex ring (55) are arranged coaxially as a whole, and the top surface of the bottom ring (54) and the side wall of the convex ring (55) are provided with a bioadhesive bonding surface (53).

7. The improved novel hemodialysis catheter according to claim 6, characterized in that: An inclined groove (56) is obliquely provided on one side of the top of the bottom ring (54).

8. The improved novel hemodialysis catheter according to claim 1, characterized in that: The sealing ring (52) is made of silicone.

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