Hemodialysis long-term catheter tunnel flushing device

Abstract

The utility model provides a long-term catheter tunnel flushing device for hemodialysis, and belongs to the technical field of medical instruments. Comprising a base, an annular adhesive tape is arranged around the edge of the base and fixedly pasted to the body surface of a patient, an opening corresponding to a flushing position is formed in the base, a movable cylinder is movably installed in the opening, a flushing cylinder is rotationally installed in the movable cylinder in a threaded mode, and a needle extending out of the lower end face of the base is fixed to the lower end of the flushing cylinder. A top cover is rotationally mounted at the top of the flushing cylinder, and a liquid pumping pipe and a liquid guide pipe are connected to the two sides of the top cover respectively; two fixing lugs are symmetrically fixed to the two sides of the opening in the base, and the lower end of the movable cylinder is rotationally installed between the two fixing lugs. The puncture depth can be conveniently adjusted, the flushing requirements of different depths can be met, the inclination angle during puncture can be adjusted before puncture, the inclined puncture requirements of different angles can be met, and the overall use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a long-term hemodialysis catheter tunnel flushing device. Background Art

[0002] In modern medical practice, hemodialysis is a common treatment method used to help patients with renal failure remove waste and excess water from their bodies. Currently, Chinese patent publication number CN211068318U discloses a flushing device for treating subcutaneous tunnel infections in long-term hemodialysis catheters. The device comprises a first tube portion and a second tube portion having a needle, the second tube portion being sheathed within the first tube portion, with the needle portion extending beyond the first tube portion. An adjustment assembly is provided between the second tube portion and the first tube portion to adjust the length of the tunnel that the needle of the second tube portion can be inserted into to be flushed. The upper outer portion of the second tube portion is connected to a liquid inlet catheter, and the second tube portion is connected to a liquid extraction tube on the opposite side of the liquid extraction tube. The other end of the liquid extraction tube is connected to a syringe, and the liquid extraction tube is connected to a suction mechanism.

[0003] This existing technology inserts the needle tube of the needle into the tunnel that the patient needs to flush, and by pressing the syringe connected to the catheter, injects saline into the tunnel to achieve disinfection. After disinfection, the saline in the blood channel is sucked out from the suction tube by the suction mechanism, thereby achieving the purpose of cleaning the tunnel. It has a good adjustment function, which is convenient for adjusting the length of the needle to meet the needs of flushing at different depths.

[0004] However, when the existing technology is actually used, medical staff are required to hold the syringe and the first tube part at the same time to operate, so that the medical staff must operate the syringe to maintain continuous injection and flushing, and hold the first tube part firmly to insert the needle into the patient's long-term catheter tunnel for flushing. This leads to distracted operation and easy negligence, which makes the needle pose a risk of injuring the patient, and needs further optimization.

[0005] Therefore, the present application provides a long-term hemodialysis catheter tunnel flushing device to meet the needs. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide a long-term hemodialysis catheter tunnel flushing device to solve the problem that in the existing flushing device for long-term hemodialysis catheter subcutaneous tunnel infection, medical staff hold the syringe and the first tube part at the same time to operate, which leads to distraction and easy negligence, causing the needle to injure the patient.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A long-term catheter tunnel flushing device for hemodialysis comprises a base, the edge of which is surrounded by a ring-shaped adhesive tape and fixed to the patient's body surface, and an opening for corresponding flushing position is opened on the base, a movable cylinder is movably installed in the opening, a flushing cylinder is rotatably installed on the inner thread of the movable cylinder, a needle is fixed to the lower end of the flushing cylinder and extends out of the lower end surface of the base, a top cover is rotatably installed on the top of the flushing cylinder, and a liquid extraction tube and a liquid catheter are respectively connected to the two sides of the top cover;

[0009] Two fixing ears are symmetrically fixed on both sides of the opening on the base, the lower end of the movable cylinder is rotatably installed between the two fixing ears, and the top edge of the fixing ear is provided with a plurality of inclined positioning slots, and a positioning plate is elastically installed on the bottom side of the movable cylinder, and the positioning plate is plugged into the positioning slot.

[0010] Optionally, the base is a semicircular structure, and the opening on the base is located at the center of the base.

[0011] Optionally, a threaded portion is provided on the surface of the flushing cylinder, and the threaded portion cooperates with an internal thread correspondingly provided on the inner wall of the movable cylinder.

[0012] Optionally, the flushing cylinder can be raised and lowered by cooperation between the threaded portion and the thread of the movable cylinder.

[0013] Optionally, the end of the liquid extraction tube away from the flushing cylinder is equipped with a negative pressure device, and the end of the liquid guide tube away from the flushing cylinder is equipped with a syringe.

[0014] Optionally, at least three positioning slots are provided, and are arranged at the top of the fixing ear in a vertical state, a sixty-degree tilt, and a thirty-degree tilt.

[0015] Optionally, a fixing block is fixed to the bottom side of the movable cylinder, a movable rod vertically passes through the fixing block, and the lower end of the movable rod is fixed to the top of the positioning plate.

[0016] Optionally, the top end of the movable rod extends out of the upper end surface of the fixed block and is fixed with an anti-drop cap.

[0017] Optionally, a spring is sleeved on the movable rod, one end of the spring is fixed to the lower end surface of the fixed block, and the other end is fixed to the top of the positioning plate.

[0018] Optionally, the spring elastically abuts the positioning plate toward the top of the fixing ear.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] In the above scheme, by setting up a base, a movable cylinder and a flushing cylinder, the base, the movable cylinder and the flushing cylinder can be fixed to the patient's body surface as a whole using an annular adhesive tape, and the length of the needle extending outside the lower end surface of the base can be controlled by twisting the flushing cylinder. This not only realizes a "gentle" puncture method, allowing the needle to gently rotate along the tunnel and slide into the blood vessel, which is conducive to improving the puncture effect, but also can adjust the puncture depth to meet the flushing needs of different depths.

[0021] By providing fixing ears, positioning slots, fixing blocks, movable rods, positioning plates and springs, the movable cylinder can be conveniently rotated between the two fixing ears to adjust its inclination angle before puncture. After adjustment, the positioning plate can be fixed by snapping it into the corresponding positioning slot to meet the needs of inclined puncture at different angles.

[0022] In summary, this device can not only conveniently adjust the puncture depth to meet the flushing needs of different depths, but also adjust the inclination angle during puncture before puncture to meet the needs of inclined puncture at different angles, and the overall use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and enable those skilled in the relevant art to make and use the invention.

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of a long-term hemodialysis catheter tunnel flushing device;

[0025] Figure 2 It is a structural diagram of the cooperation between the base and the movable cylinder;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the flushing cylinder;

[0027] Figure 4 for Figure 2 A magnified schematic diagram of the structure at center A.

[0028] [Reference Signs]

[0029] 1. Base; 101. Ring-shaped adhesive tape; 2. Movable cylinder; 3. Fixing ear; 4. Flushing cylinder; 401. Needle; 402. Top cover; 403. Threaded portion; 5. Aspiration tube; 6. Catheter tube; 7. Syringe; 8. Positioning slot; 9. Fixing block; 10. Movable rod; 11. Positioning plate; 12. Spring.

[0030] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, devices and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0031] The following describes in detail a long-term hemodialysis catheter tunnel flushing device provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0032] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0033] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0034] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0035] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0036] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a long-term catheter tunnel flushing device for hemodialysis, comprising a base 1, which is a semicircular structure. A ring-shaped adhesive tape 101 is arranged around the edge of the base 1 and is adhered and fixed to the patient's body surface. An opening for a corresponding flushing position is opened at the center of the base 1, and a movable cylinder 2 is movably installed in the opening. A flushing cylinder 4 is rotatably installed on the inner thread of the movable cylinder 2. A needle 401 extending out of the lower end surface of the base 1 is fixed to the lower end of the flushing cylinder 4, and a top cover 402 is rotatably installed on the top of the flushing cylinder 4. A liquid extraction tube 5 and a liquid catheter 6 are respectively connected to the two sides of the top cover 402, wherein the end of the liquid extraction tube 5 away from the flushing cylinder 4 is equipped with a negative pressure device, and the end of the liquid catheter 6 away from the flushing cylinder 4 is equipped with a syringe 7, so that flushing liquid can be injected into the catheter tunnel through the syringe 7 and the liquid catheter 6, and after flushing, the flushing waste liquid is discharged through the liquid extraction tube 5 connected to the negative pressure device.

[0037] like Figure 3 As shown, the surface of the flushing cylinder 4 is provided with a threaded portion 403, and the threaded portion 403 cooperates with the internal thread correspondingly provided on the inner wall of the movable cylinder 2, so that the flushing cylinder 4 can be raised and lowered under the cooperation of the threaded portion 403 and the thread of the movable cylinder 2 to adjust the length of the needle 401 extending out of the lower end surface of the base 1. At the same time, the raising and lowering of the flushing cylinder 4 is accompanied by rotation, so that the needle 401 can be screwed into the patient's body in a gentle manner, thereby improving the puncture effect.

[0038] like Figure 4 As shown, two fixing ears 3 are symmetrically fixed on either side of the opening on the base 1. The lower end of the movable cylinder 2 is rotatably mounted between the two fixing ears 3. The top edges of the fixing ears 3 are provided with multiple inclined positioning slots 8. A positioning plate 11 is elastically mounted on the bottom side of the movable cylinder 2, and the positioning plate 11 engages with the positioning slots 8. In this embodiment, at least three positioning slots 8 are provided, and are arranged at the top of the fixing ears 3 in a vertical position, a 60-degree angle, and a 30-degree angle.

[0039] As for the elastic installation of the positioning plate 11, in this embodiment, a fixing block 9 is provided on the bottom side of the movable cylinder 2, and a movable rod 10 is vertically passed through the fixing block 9. The lower end of the movable rod 10 is fixed to the top of the positioning plate 11, wherein the top end of the movable rod 10 extends out of the upper end surface of the fixing block 9 and is fixed with an anti-drop cap, and a spring 12 is sleeved on the movable rod 10, one end of the spring 12 is fixed to the lower end surface of the fixing block 9, and the other end is fixed to the top of the positioning plate 11. The spring 12 elastically abuts the positioning plate 11 toward the top direction of the fixing ear 3, thereby elastically installing the positioning plate 11 on the bottom side of the movable cylinder 2, to be plugged into and matched with different positioning slots 8, so as to fix the position of the flushing cylinder 4.

[0040] The working principle of the technical solution provided by this utility model is as follows:

[0041] During use, the ring-shaped adhesive tape 101 can be used to fix the base 1, the movable cylinder 2 and the flushing cylinder 4 as a whole to the patient's body surface, and the length of the needle 401 extending outside the lower end surface of the base 1 can be controlled by twisting the flushing cylinder 4. This not only realizes a "gentle" puncture method, allowing the needle 401 to gently rotate along the tunnel and slide into the blood vessel, which is beneficial to improving the puncture effect, but also can adjust the puncture depth to meet the flushing needs of different depths.

[0042] In addition, before puncture, the inclination angle of the movable cylinder 2 can be adjusted by rotating the two fixed ears 3, and after adjustment, the positioning plate 11 can be fixed by snapping it into the corresponding positioning slot 8 to meet the needs of inclined puncture at different angles.

[0043] In summary, this device can not only conveniently adjust the puncture depth to meet the flushing needs of different depths, but also adjust the inclination angle during puncture before puncture to meet the needs of inclined puncture at different angles, and the overall use effect is good.

[0044] This invention encompasses any alternatives, modifications, equivalents, and solutions that do not depart from the spirit and scope of this invention. To provide a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments of this invention, but those skilled in the art will be able to fully understand this invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A long-term hemodialysis catheter tunnel flushing device, comprising a base, characterized in that: The edge of the base is surrounded by a ring-shaped adhesive tape and is fixed to the patient's body surface. The base is provided with an opening corresponding to the flushing position, and a movable cylinder is movably installed in the opening. The flushing cylinder is rotatably installed on the inner thread of the movable cylinder. The lower end of the flushing cylinder is fixed with a needle extending out of the lower end surface of the base. The top of the flushing cylinder is rotatably installed with a top cover, and the two sides of the top cover are respectively connected to a liquid extraction tube and a liquid catheter; Two fixing ears are symmetrically fixed on both sides of the opening on the base, the lower end of the movable cylinder is rotatably installed between the two fixing ears, and the top edge of the fixing ear is provided with a plurality of inclined positioning slots, and a positioning plate is elastically installed on the bottom side of the movable cylinder, and the positioning plate is plugged into the positioning slot.

2. The hemodialysis long-term catheter tunnel flushing device according to claim 1, characterized in that: The base is a semicircular structure, and the opening on the base is located at the center of the base.

3. The hemodialysis long-term catheter tunnel flushing device according to claim 1, characterized in that: The surface of the flushing cylinder is provided with a threaded portion, and the threaded portion cooperates with an internal thread correspondingly provided on the inner wall of the movable cylinder.

4. The hemodialysis long-term catheter tunnel flushing device according to claim 3, characterized in that: The flushing cylinder can be lifted and lowered under the cooperation between the threaded portion and the thread of the movable cylinder.

5. The hemodialysis long-term catheter tunnel flushing device according to claim 1, characterized in that: One end of the liquid extraction tube away from the flushing tube is matched with a negative pressure device, and one end of the liquid guide tube away from the flushing tube is matched with a syringe.

6. The hemodialysis long-term catheter tunnel flushing device according to claim 1, characterized in that: At least three positioning slots are provided, and are arranged at the top of the fixing ear in a vertical state, a sixty-degree inclination, and a thirty-degree inclination.

7. The hemodialysis long-term catheter tunnel flushing device according to claim 1, characterized in that: A fixing block is fixed to the bottom side of the movable cylinder, a movable rod vertically penetrates the fixing block, and the lower end of the movable rod is fixed to the top of the positioning plate.

8. The hemodialysis long-term catheter tunnel flushing device according to claim 7, characterized in that: The top end of the movable rod extends out of the upper end surface of the fixed block and is fixed with an anti-dropping cap.

9. The hemodialysis long-term catheter tunnel flushing device according to claim 7, characterized in that: A spring is sleeved on the movable rod, one end of the spring is fixed to the lower end surface of the fixed block, and the other end is fixed to the top of the positioning plate.

10. The hemodialysis long-term catheter tunnel flushing device according to claim 9, characterized in that: The spring elastically abuts the positioning plate toward the top of the fixing ear.

Images