Novel hemodialysis device
By designing a hemodialysis device including a clamping mechanism, the problem of imperfect fixation of the puncture needle during dialysis is solved, and the stable fixation of the puncture needle is achieved, and the safety and reliability of hemodialysis are improved.
Patent Information
- Application Number
- CN202420246790.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-01
AI Technical Summary
In existing hemodialysis devices, the puncture needle is not firmly fixed after puncture, resulting in the movement of the patient's body during a prolonged dialysis process, which may cause the puncture needle to be displaced or fall off.
A hemodialysis device including a rectangular frame, a support plate, a circular plate, a puncture needle and a clamping mechanism is designed. The puncture needle is inserted through the circular opening on the circular plate and is fixed by a clamping mechanism. The clamping mechanism includes an arc-shaped clamping plate, an internal threaded cylinder, a threaded rod and a spur gear. Through the design of the sleeve and annular rack, the puncture needle remains fixed during dialysis.
It effectively avoids the puncture needle being displaced or fall off due to the movement of the patient's body during the dialysis process, ensures the stable fixation of the puncture needle and improves the safety and reliability of hemodialysis.
Smart Images
Figure CN222467684U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment, in particular to a novel hemodialysis 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 through a dialyzer composed of countless hollow fibers. The blood and an electrolyte solution (dialysate) containing electrolytes at similar concentrations to the body are exchanged through diffusion / convection inside and outside the hollow fibers to remove metabolic waste from the body and maintain electrolyte and acid-base balance. At the same time, it removes excess water from the body and returns the purified blood. The entire process is called hemodialysis.
[0003] Currently, during hemodialysis, a puncture needle is required for puncture. However, in the prior art, the puncture needle is not firmly fixed after puncture, and hemodialysis generally takes a long time, which makes it easy for the patient to move during the dialysis process, causing the puncture needle to shift or fall off. Therefore, a new hemodialysis device is proposed. Utility Model Content
[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a new type of hemodialysis device, which effectively solves the problem that a puncture needle needs to be used for puncture during hemodialysis. In the prior art, the puncture needle is not firmly fixed after puncture, and hemodialysis generally takes a long time, which makes it easy for the patient to move his body during the dialysis process, causing the puncture needle to shift or fall off.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel hemodialysis device, comprising a rectangular frame, two support plates, a circular plate and a puncture needle, the two support plates are respectively vertically fixedly arranged on the front and rear sides of the upper end of the rectangular frame, the circular plate is horizontally arranged above the rectangular frame and fixedly connected to the two support plates, a circular opening is opened in the middle of the upper end of the circular plate, the puncture needle is slidably inserted in the circular opening, a cylinder concentrically arranged with the circular opening is fixedly arranged on the upper end of the circular plate, a clamping mechanism that can fix the puncture needle is arranged inside the cylinder, elastic bands are fixedly connected on the left and right sides of the rectangular frame, the clamping mechanism comprises two arc-shaped clamping plates, two internally threaded cylinders, two threaded rods and two spur gears, the two arc-shaped clamping plates are ... rectangular frame, the circular plate is horizontally arranged above the rectangular frame and fixedly connected to the two support plates, the circular plate is horizontally arranged above the rectangular frame and fixedly connected to the two support plates, the circular plate is horizontally arranged above the two support plates, the circular plate is horizontally arranged above the two support plates, the circular plate is horizontally arranged above the two support plates, the circular plate is horizontally arranged above the two It is arranged in a cylinder and distributed symmetrically on the left and right sides. Square grooves are provided on the left and right sides of the cylinder. The end faces of the two internally threaded cylinders are arranged in a square shape and are slidably arranged in the two square grooves respectively. The two internally threaded cylinders are fixedly connected with the two arc-shaped clamping plates respectively. The two threaded rods are threadedly sleeved with the two internally threaded cylinders respectively, and the opposite ends of the two threaded rods pass through the bottoms of the two square grooves respectively through the first bearing and are fixedly connected with two spur gears respectively. A sleeve is sleeved on the outer side of the cylinder. The bottom of the sleeve is rotatably connected to the upper side of the circular plate through the second bearing. An annular groove is provided on the inner circular side wall of the sleeve. A first annular rack is fixedly provided on the lower annular side wall of the annular groove. The two spur gears are both located in the annular groove and mesh with the first annular rack.
[0006] Preferably, each of the square grooves is provided with guide grooves on both the front and rear sides, and guide sliders are slidably arranged in the two guide grooves, and the two guide sliders are fixedly connected to the front and rear sides of the internal threaded barrel respectively.
[0007] Preferably, a second annular rack is fixedly sleeved below the outer circular side wall of the sleeve, and an overrunning clutch is also sleeved on the outer side of the sleeve. The inner circular side wall of the overrunning clutch is provided with an annular tooth groove that can engage with the second annular rack. A plurality of deep grooves are provided on the upper side of the circular plate, and a pull rod is slidably arranged in each of the deep grooves. A tension spring is fixedly arranged between each of the pull rods and the bottom of the deep groove, and the upper ends of the plurality of pull rods are fixedly connected to the outer ring of the overrunning clutch.
[0008] Preferably, both front and rear side bars of the rectangular frame are arc-shaped.
[0009] Technical effects and advantages of the utility model:
[0010] 1. When in use, the rectangular frame is placed on the patient's body and bound by two elastic straps, and then the puncture needle is inserted into the circular opening on the circular plate and the patient is punctured. After the puncture is completed, the sleeve is rotated, and the sleeve drives the first annular rack to rotate, and the rotation of the first annular rack drives the two spur gears to rotate, and the two spur gears drive the two threaded rods to rotate, and the rotation of the two threaded rods drives the two internally threaded cylinders to move relatively, and the two internally threaded cylinders drive the two clamping plates to move relatively, so that the puncture needle can be clamped and fixed, and the sleeve can rotate normally when it rotates forward through the overrunning clutch and the second annular rack, and after the rotation is completed, it cannot rotate in the reverse direction, thereby avoiding the sleeve from reversing and causing loosening. When the puncture needle needs to be loosened, the overrunning clutch is lifted upward and separated from the second annular rack, so that the sleeve can be rotated in the reverse direction, and then the puncture needle can be loosened. Through the above device, it is convenient to support and fix the puncture needle after puncture, and avoid displacement and falling off of the puncture needle due to the movement of the patient's body during dialysis, which is convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0012] Figure 1 It is a front cross-sectional structural schematic diagram of the utility model;
[0013] Figure 2 For the utility model Figure 1 A schematic diagram of the enlarged structure of part A;
[0014] Figure 3 It is a schematic diagram of a top view cross-sectional structure of a circular plate, a cylinder and a sleeve of the utility model;
[0015] Figure 4 It is a schematic diagram of the top view of the rectangular frame of the utility model.
[0016] In the figure: 1, rectangular frame; 2, support plate; 3, round plate; 4, puncture needle; 5, cylinder; 6, elastic band; 7, arc clamping plate; 8, internal thread cylinder; 9, threaded rod; 10, spur gear; 11, sleeve; 12, first annular rack; 13, guide slider; 14, second annular rack; 15, overrunning clutch; 16, pull rod; 17, tension spring. DETAILED DESCRIPTION
[0017] The utility model provides Figure 1-4A novel hemodialysis device shown in the figure comprises a rectangular frame 1, two support plates 2, a circular plate 3 and a puncture needle 4. The two support plates 2 are respectively vertically fixed on the front and rear sides of the upper end of the rectangular frame 1, the circular plate 3 is horizontally arranged above the rectangular frame 1 and fixedly connected to the two support plates 2, a circular opening is opened in the middle of the upper end of the circular plate 3, and the puncture needle 4 is slidably inserted in the circular opening, a cylinder 5 concentrically arranged with the circular opening is fixedly arranged on the upper end of the circular plate 3, a clamping mechanism for fixing the puncture needle 4 is arranged inside the cylinder 5, and elastic bandages 6 are fixedly connected to the left and right sides of the rectangular frame 1.
[0018] like Figure 1-Figure 3 The clamping mechanism includes two arc-shaped clamping plates 7, two internally threaded cylinders 8, two threaded rods 9 and two spur gears 10. The two arc-shaped clamping plates 7 are vertically arranged in the cylinder 5 and are symmetrically distributed on the left and right sides. Square grooves are provided on the left and right sides of the cylinder 5. The end faces of the two internally threaded cylinders 8 are square-shaped and slidably arranged in the two square grooves respectively. The two internally threaded cylinders 8 are fixedly connected to the two arc-shaped clamping plates 7 respectively. The two threaded rods 9 are threadedly sleeved with the two internally threaded cylinders 8 respectively, and the opposite ends of the two threaded rods 9 pass through the bottom of the two square grooves respectively through the first bearing and are fixedly connected with two spur gears 10 respectively. A sleeve 11 is sleeved on the outer side of the cylinder 5. The bottom of the sleeve 11 is rotatably connected to the upper side of the circular plate 3 through the second bearing. An annular groove is provided on the inner circular side wall of the sleeve 11. A first annular rack 12 is fixedly provided on the lower annular side wall of the annular groove. The two spur gears 10 are both located in the annular groove and mesh with the first annular rack 12.
[0019] like Figure 3 As shown, guide grooves are provided on the front and rear sides of each square groove, and guide sliders 13 are slidably arranged in the two guide grooves. The two guide sliders 13 are respectively fixedly connected to the front and rear sides of the internal threaded barrel 8, and can guide the movement of the internal threaded barrel 8, making the movement of the internal threaded barrel 8 more stable.
[0020] like Figure 2 and Figure 3 As shown, a second annular rack 14 is fixedly sleeved below the outer circular side wall of the sleeve 11, and an overrunning clutch 15 is also sleeved on the outer side of the sleeve 11. The inner circular side wall of the overrunning clutch 15 is provided with an annular tooth groove that can mesh with the second annular rack 14. A plurality of deep grooves are provided on the upper side of the circular plate 3, and a pull rod 16 is slidably arranged in each deep groove. A tension spring 17 is fixedly arranged between each pull rod 16 and the bottom of the deep groove, and the upper ends of the plurality of pull rods 16 are fixedly connected to the outer ring of the overrunning clutch 15.
[0021] like Figure 1 As shown, the front and rear side bars of the rectangular frame 1 are both arc-shaped, which makes it easier to place the rectangular frame 1 on the patient's body more stably.
[0022] The working principle of the utility model is as follows: when in use, the rectangular frame 1 is placed on the patient's body and bound by two elastic bands 6, and then the puncture needle 4 is inserted into the circular opening on the circular plate 3 and the patient is punctured. After the puncture is completed, the sleeve 11 is rotated, and the sleeve 11 drives the first annular rack 12 to rotate, and the rotation of the first annular rack 12 drives the two spur gears 10 to rotate, and the two spur gears 10 drive the two threaded rods 9 to rotate, and the rotation of the two threaded rods 9 drives the two internal threaded cylinders 8 to move relative to each other, and the two internal threaded cylinders 8 drive the two clamping plates to move relative to each other, so that the puncture needle 4 can be inserted into the patient's body. The sleeve 11 is clamped and fixed, and the overrunning clutch 15 and the second annular rack 14 enable the sleeve 11 to rotate normally when it rotates forward, and it cannot rotate in the reverse direction after the rotation is completed, thereby avoiding the sleeve 11 from reversing and causing loosening. When the puncture needle 4 needs to be loosened, the overrunning clutch 15 is lifted upward and separated from the second annular rack 14, so that the sleeve 11 can be rotated in the reverse direction, and then the puncture needle 4 can be loosened. The upper device is convenient for supporting and fixing the puncture needle 4 after puncture, avoiding the puncture needle 4 from shifting and falling off due to the movement of the patient's body during the dialysis process, and is convenient for people to use.
[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A novel hemodialysis device, characterized in that: It includes a rectangular frame, two support plates, a circular plate and a puncture needle, the two support plates are respectively vertically fixedly arranged on the front and rear sides of the upper end of the rectangular frame, the circular plate is horizontally arranged above the rectangular frame and fixedly connected to the two support plates, a circular opening is opened in the middle of the upper end of the circular plate, the puncture needle is slidably inserted in the circular opening, a cylinder concentrically arranged with the circular opening is fixedly arranged on the upper end of the circular plate, a clamping mechanism that can fix the puncture needle is arranged inside the cylinder, the left and right sides of the rectangular frame are fixedly connected with elastic bands, the clamping mechanism includes two arc-shaped clamping plates, two internally threaded cylinders, two threaded rods and two spur gears, the two arc-shaped clamping plates are vertically arranged in the cylinder and symmetrically distributed on the left and right, the circular The left and right sides of the cylinder are provided with square grooves, the end faces of the two internally threaded cylinders are square-shaped and slidably arranged in the two square grooves, and the two internally threaded cylinders are fixedly connected to the two arc-shaped clamping plates respectively, the two threaded rods are threadedly sleeved with the two internally threaded cylinders respectively, and the opposite ends of the two threaded rods pass through the bottoms of the two square grooves respectively through the first bearing and are fixedly connected with two spur gears respectively, a sleeve is sleeved on the outer side of the cylinder, the bottom of the sleeve is rotatably connected to the upper side of the circular plate through the second bearing, an annular groove is provided on the inner circular side wall of the sleeve, and a first annular rack is fixedly arranged on the lower annular side wall of the annular groove, and the two spur gears are both located in the annular groove and mesh with the first annular rack.
2. A novel hemodialysis device according to claim 1, characterized in that: A guide slide groove is provided on both the front and rear sides of each square groove, and a guide slider is slidably arranged in the two guide slide grooves. The two guide sliders are fixedly connected to the front and rear sides of the internal threaded barrel respectively.
3. A novel hemodialysis device according to claim 2, characterized in that: A second annular rack is fixedly sleeved below the outer circular side wall of the sleeve, and an overrunning clutch is also sleeved on the outer side of the sleeve. An annular tooth groove that can mesh with the second annular rack is formed on the inner circular side wall of the overrunning clutch. A plurality of deep grooves are formed on the upper side of the circular plate, and a pull rod is slidably arranged in each of the deep grooves. A tension spring is fixedly arranged between each of the pull rods and the bottom of the deep groove, and the upper ends of the plurality of pull rods are fixedly connected to the outer ring of the overrunning clutch.
4. A novel hemodialysis device according to claim 3, characterized in that: The front and rear side bars of the rectangular frame are both arranged in an arc shape.