Vein pot for hemodialysis

Abstract

The utility model relates to the technical field of vein pots, in particular to a vein pot for hemodialysis, which comprises a pot shell, a threaded sleeve is arranged on the outer wall of the top of the pot shell, a mounting port is arranged on the inner wall of the top of the threaded sleeve, a filter cartridge with a conical structure is fixedly connected to the inner wall of the mounting port, and a positioning groove is arranged on the outer wall of the top of the threaded sleeve. And three grooves distributed at equal intervals are formed in the inner wall of the positioning groove, a connecting pipe is connected to the inner wall of the mounting opening in an inserted mode, and two symmetrically-arranged mounting cavities are formed in the connecting pipe. According to the utility model, the defects in the prior art are overcome, the filter cartridge can be conveniently and directly disassembled and replaced through the matching between the threaded sleeve and the filter cartridge, and the driving assembly and the limiting block are arranged on the connecting pipe, and the driving assembly drives the limiting block to extend out and be inserted into the limiting groove in the threaded sleeve; therefore, the connecting pipe can be conveniently and stably fixed on the threaded sleeve, and the problem that the end cover in an existing vein pot is unstable in installation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of venous pots, in particular to a venous pot for hemodialysis. Background Art

[0002] Hemodialysis is one of the main renal replacement therapies for patients with renal failure. During hemodialysis, the doctor first establishes the patient's vascular access, then connects the pre-flushed dialyzer and disposable blood tubing to the patient's vascular access, establishes extracorporeal circulation and begins hemodialysis treatment.

[0003] After searching, the Chinese patent publication number CN211512857U discloses a detachable venous pot device in a hemodialysis tube, comprising a venous pot shell, a lower end cover detachably connected to the top of the venous pot shell, an upper end cover detachably connected to the lower end cover, and a fixing clamp for fixing the lower end cover and the upper end cover; the bottom of the lower end cover is fixedly connected to a filter screen, the filter screen is arranged inside the venous pot shell, and the upper end cover is connected to a blood circuit tube; the lower end cover and the upper end cover are both hollow cylinders with fluid channels; an annular concave clamp groove is provided around the outer wall of the lower end cover and the outer wall of the upper end cover, which cooperates with the fixing clamp.

[0004] The detachable intravenous pot device in the hemodialysis tube in the above patent has the following shortcomings: the above patent facilitates the connection of the upper and lower end covers through the setting of the fixing clamp, but the connection stability of the fixing frame is relatively poor, and the external connection structure is easily affected by human factors. Utility Model Content

[0005] The purpose of the present invention is to solve or at least alleviate the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a venous kettle for hemodialysis, comprising a kettle body, a threaded sleeve is provided on the top outer wall of the kettle body, a mounting opening is provided on the top inner wall of the threaded sleeve, a filter cartridge with a conical structure is fixedly connected to the inner wall of the mounting opening, a positioning groove is provided on the top outer wall of the threaded sleeve, three grooves distributed at equal distances are provided on the inner wall of the positioning groove, a connecting pipe is plugged into the inner wall of the mounting opening, two symmetrically arranged mounting cavities are provided inside the connecting pipe, and openings are provided on the inner walls of the two mounting cavities, the inner walls of the two openings are slidably connected to limit blocks, and the inner walls of the two mounting cavities are provided with driving components for driving the limit blocks.

[0007] With the above structure, the setting of the threaded sleeve facilitates the filter cartridge, the setting of the filter cartridge facilitates filtering, the setting of the threaded sleeve facilitates the installation of the filter cartridge on the kettle shell, the setting of the limit block in the connecting pipe facilitates the installation of the connecting pipe in the threaded sleeve, and the setting of the drive assembly facilitates the adjustment of the positions of the two limit blocks, thereby facilitating the quick disassembly and assembly of the connecting pipe.

[0008] A positioning ring is fixedly connected to the outer wall of the connecting pipe, and three positioning blocks distributed at equal distances are fixedly connected to the outer wall of the positioning ring.

[0009] With the above structure, the connection pipe can be quickly positioned by arranging the positioning block on the positioning ring.

[0010] The specifications of the positioning ring match those of the positioning groove, and the specifications of the positioning block match those of the groove.

[0011] With the above structure, the connection pipe can be quickly positioned and installed by the cooperation between the positioning block and the groove on the positioning ring.

[0012] The outer wall of the top of the connecting pipe is provided with two symmetrically arranged circular grooves, and the bottom inner walls of the two circular grooves are both rotatably connected with a rotating part.

[0013] With the above structure, the circular groove is provided to facilitate concealed installation of the rotating part.

[0014] The driving assembly comprises a screw rod which is rotatably connected to the inner wall of the installation cavity, and a trapezoidal block is screwed onto the outer wall of the screw rod.

[0015] With the above structure, the screw rod can be conveniently installed by rotating it through the setting of the installation cavity, and the trapezoidal block can be conveniently driven to move when the screw rod rotates.

[0016] The trapezoidal block is slidably connected to the inner wall of the installation cavity, and a sliding groove is provided on the outer wall of one side of the trapezoidal block.

[0017] With the above structure, the trapezoidal block is slidably connected to the installation cavity, thereby preventing the trapezoidal block from rotating along with the screw rod.

[0018] The limiting block is slidably connected to the inner wall of the sliding groove, and the inner wall of the installation opening is provided with two limiting grooves matching the limiting block.

[0019] With the above structure, the limiting block is inserted into the limiting groove, thereby facilitating fixing the connecting pipe on the threaded sleeve.

[0020] One end of the rotating part is fixedly connected to the screw rod, the outer wall of the kettle shell is provided with an external thread, and the threaded sleeve is screwed on the kettle shell through the external thread.

[0021] With the above structure, the screw rod can be directly driven to rotate by the setting of the rotating part, and the threaded sleeve is screwed to the kettle body in conjunction with the external thread.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] (1) The present invention facilitates direct disassembly and replacement of the filter cartridge by cooperating between the threaded sleeve and the filter cartridge. Furthermore, by arranging a driving assembly and a limiting block on the connecting pipe, the driving assembly drives the limiting block to extend and insert into the limiting groove in the threaded sleeve, thereby facilitating stable fixing of the connecting pipe on the threaded sleeve, thereby solving the problem of unstable installation of the end cover in the existing intravenous bottle.

[0024] (2) The utility model provides a rotating part on the connecting pipe, which drives the screw in the driving assembly to rotate, thereby facilitating the cooperation with the trapezoidal block to drive the limit block to move. When the limit block is extended, it is convenient to fix the connecting pipe in the threaded sleeve. The internal connection method ensures the stable connection between the connecting pipe and the threaded sleeve, avoiding the problem of connection falling off during actual application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the three-dimensional expanded structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the connecting pipe structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure of the connecting pipe of the present invention.

[0029] In the figure: 1. Kettle body; 2. Threaded sleeve; 3. Connecting pipe; 4. Filter cartridge; 5. External thread; 6. Mounting port; 7. Positioning groove; 8. Limit block; 9. Positioning ring; 10. Positioning block; 11. Rotating part; 12. Mounting cavity; 13. Screw; 14. Trapezoidal block; 15. Drive assembly. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1-4The filter cartridge 4 is convenient to install and can be installed on the filter housing 1. The filter cartridge 4 is convenient to install and can be installed on the filter housing 1. The filter cartridge 4 is convenient to install and can be installed on the filter housing 1. The filter cartridge 4 is convenient to install and can be installed on the filter housing 1. The filter cartridge 4 is convenient to install and can be installed on the filter housing 1. The filter cartridge 4 is convenient to install and can be installed on the filter housing 1. The filter cartridge 4 is convenient to install and can be installed on the filter housing 1. The filter cartridge 4 is convenient to install and can be installed on the filter housing 1. The filter cartridge 4 is convenient to install and can be installed on the filter housing 1

[0032] For details, please refer to Figure 3 The outer wall of the connecting pipe 3 is fixedly connected with a positioning ring 9, and the outer wall of the positioning ring 9 is fixedly connected with three positioning blocks 10 distributed at equal distances. The setting of the positioning blocks 10 on the positioning ring 9 facilitates rapid positioning of the connecting pipe 3.

[0033] For details, please refer to Figure 3 The specifications of the positioning ring 9 match those of the positioning groove 7, and the specifications of the positioning block 10 match those of the groove. Through the cooperation between the positioning block 10 and the groove on the positioning ring 9, the connecting pipe 3 can be quickly positioned and installed.

[0034] For details, please refer to Figure 2-3 The outer wall of the top of the connecting pipe 3 is provided with two symmetrically arranged circular grooves, and the bottom inner walls of the two circular grooves are rotatably connected with the rotating part 11. The setting of the circular grooves facilitates the hidden installation of the rotating part 11.

[0035] For details, please refer to Figure 4 The driving assembly 15 includes a screw 13 rotatably connected to the inner wall of the installation cavity 12, and the outer wall of the screw 13 is screwed with a trapezoidal block 14. The setting of the installation cavity 12 facilitates the rotational installation of the screw 13, and when the screw 13 rotates, it is convenient to drive the trapezoidal block 14 to move.

[0036] For details, please refer to Figure 4 The trapezoidal block 14 is slidably connected to the inner wall of the mounting cavity 12 , and a sliding groove is provided on the outer wall of one side of the trapezoidal block 14 , which is slidably connected to the mounting cavity 12 to prevent the trapezoidal block 14 from rotating with the screw 13 .

[0037] For details, please refer to Figure 3-4The limit block 8 is slidably connected to the inner wall of the slide groove, and the inner wall of the mounting port 6 is provided with two limit grooves that match the limit block 8. The limit block 8 is inserted into the limit groove, thereby facilitating the fixing of the connecting pipe 3 on the threaded sleeve 2.

[0038] For details, please refer to Figure 2-4 One end of the rotating part 11 is fixedly connected to the screw 13. The outer wall of the kettle body 1 is provided with an external thread 5. The threaded sleeve 2 is screwed to the kettle body 1 through the external thread. The setting of the rotating part 11 is convenient for directly driving the screw 13 to rotate, and the threaded sleeve 2 is screwed to the kettle body 1 with the external thread 5.

[0039] Working principle: During use, when the filter cartridge 4 needs to be disassembled, first rotate the threaded sleeve 2 to remove it from the kettle body 1, and then remove the connecting pipe 3 from the threaded sleeve 2, and use the socket wrench to drive the rotating part 11 to rotate. When the rotating part 11 rotates, it directly drives the screw 13 to rotate. When the screw 13 rotates, it directly drives the trapezoidal block 14 to rise and fall. When the trapezoidal block 14 rises, it directly drives the limit block 8 to be retracted into the installation cavity 12. When the limit block 8 is in the limit groove, the connecting pipe 3 can be removed from the threaded sleeve 2.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A venous hemodialysis pot, comprising a pot housing (1), characterized in that: The top outer wall of the pot shell (1) is provided with a threaded sleeve (2), the top inner wall of the threaded sleeve (2) is provided with a mounting opening (6), the inner wall of the mounting opening (6) is fixedly connected with a filter cartridge (4) of a conical structure, the top outer wall of the threaded sleeve (2) is provided with a positioning groove (7), the inner wall of the positioning groove (7) is provided with three grooves distributed at equal distances, the inner wall of the mounting opening (6) is plugged with a connecting pipe (3), the interior of the connecting pipe (3) is provided with two symmetrically arranged mounting cavities (12), and the inner walls of the two mounting cavities (12) are both provided with openings, the inner walls of the two openings are both slidably connected with a limit block (8), and the inner walls of the two mounting cavities (12) are both provided with a driving assembly (15) for driving the limit block (8).

2. A venous trap for hemodialysis according to claim 1, characterized in that: A positioning ring (9) is fixedly connected to the outer wall of the connecting pipe (3), and three positioning blocks (10) distributed at equal distances are fixedly connected to the outer wall of the positioning ring (9).

3. The intravenous canister for hemodialysis according to claim 2, characterized in that: The specifications of the positioning ring (9) match those of the positioning groove (7), and the specifications of the positioning block (10) match those of the groove.

4. A venous trap for hemodialysis according to claim 3, characterized in that: The top outer wall of the connecting pipe (3) is provided with two symmetrically arranged circular grooves, and the bottom inner walls of the two circular grooves are both rotatably connected with a rotating part (11).

5. The intravenous canister for hemodialysis according to claim 4, characterized in that: The driving assembly (15) comprises a screw rod (13) rotatably connected to the inner wall of the installation cavity (12), and a trapezoidal block (14) is screwed onto the outer wall of the screw rod (13).

6. The intravenous canister for hemodialysis according to claim 5, characterized in that: The trapezoidal block (14) is slidably connected to the inner wall of the installation cavity (12), and a sliding groove is provided on one outer wall of the trapezoidal block (14).

7. The intravenous canister for hemodialysis according to claim 6, characterized in that: The limiting block (8) is slidably connected to the inner wall of the slide groove, and the inner wall of the installation opening (6) is provided with two limiting grooves matching the limiting block (8).

8. The intravenous chamber for hemodialysis according to claim 7, characterized in that: One end of the rotating part (11) is fixedly connected to the screw (13); an external thread (5) is provided on the outer wall of the kettle housing (1); and the threaded sleeve (2) is screwed onto the kettle housing (1) via the external thread.

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