Mesenchymal stem cell composition injection device for treating arthritis

Abstract

The utility model discloses a mesenchymal stem cell composition injection device for treating arthritis, which comprises an injection tube, a composition filling mechanism is fixedly mounted on one side of the outer wall of the injection tube, a pushing mechanism capable of moving up and down is arranged above the inner wall of the injection tube, a fixed tube is fixedly mounted above the inner wall of the injection tube, and a liquid outlet is formed in the inner wall of the fixed tube. A second opening is formed in the lower portion of the outer wall of the fixing pipe, and an injection head replacing mechanism used for installation is arranged on the lower portion of the outer wall of the injection pipe. According to the mesenchymal stem cell composition injection device for treating arthritis, stable injection of a mesenchymal stem cell composition can be guaranteed by arranging the pushing mechanism, and filling of the mesenchymal stem cell composition is facilitated by arranging the composition filling mechanism, so that the injection efficiency of the mesenchymal stem cell composition is improved. Meanwhile, the interior of the injection tube can be ensured to be in a sealed state.

Description

Technical Field

[0001] The utility model relates to the technical field related to arthritis, in particular to a mesenchymal stem cell composition injection device for treating arthritis. Background Art

[0002] Arthritis refers to inflammatory diseases that occur in human joints and surrounding tissues and are caused by inflammation, infection, degeneration, trauma or other factors. There are dozens of types of arthritis. There are more than 100 million arthritis patients in my country, and the number is increasing. Clinical manifestations include redness, swelling, heat, pain, dysfunction and joint deformity of the joints. Severe cases lead to joint disability and affect the quality of life of patients. According to statistics, half of the people over 50 years old in my country suffer from osteoarthritis, and 90% of women and 80% of men over 65 years old suffer from osteoarthritis. The prevalence rate in my country is 0.34% to 0.36%, and the life expectancy of severe cases is shortened by about 10 to 15 years. At present, mesenchymal stem cell compositions are often used for injection in the treatment of arthritis. For this reason, we propose a mesenchymal stem cell composition injection device for treating arthritis.

[0003] The currently used mesenchymal stem cell composition injection device cannot achieve stable injection of the mesenchymal stem cell composition during injection, is troublesome to fill the mesenchymal stem cell composition, and is prone to internal blockage. Utility Model Content

[0004] The purpose of the utility model is to provide a mesenchymal stem cell composition injection device for treating arthritis, so as to solve the problems of the currently used mesenchymal stem cell composition injection device proposed in the above background technology, that is, during injection, the mesenchymal stem cell composition cannot be stably injected, the filling of the mesenchymal stem cell composition is relatively troublesome, and internal blockage is easy to occur.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mesenchymal stem cell composition injection device for treating arthritis, comprising an injection tube, a composition injection mechanism is fixedly installed on one side of the outer wall of the injection tube, a propulsion mechanism that can move up and down is provided above the inner wall of the injection tube, a fixed tube is fixedly installed above the inner wall of the injection tube, a second opening is provided below the outer wall of the fixed tube, and an injection head replacement mechanism for installation is provided below the outer wall of the injection tube.

[0006] Preferably, the composition injection mechanism includes a connecting block, a first opening, a threaded groove and a threaded cover plate, wherein the connecting block is fixedly mounted on one side of the outer wall of the injection tube, a first opening is provided on one side of the outer wall of the connecting block, a threaded groove is provided on the inner surface of the first opening, and a threaded cover plate of matching size is provided on the inner wall of the threaded groove.

[0007] Preferably, the propulsion mechanism includes a fixed block, a slide groove, a propulsion tube, a limit block and a sealing gasket, the fixed block is fixedly installed above the outer wall of the injection tube, the inner wall of the fixed block is provided with a slide groove, the inner wall of the fixed block is provided with a propulsion tube that can move up and down, the outer wall of the propulsion tube is welded with a limit block, and the lower part of the outer wall of the propulsion tube is bonded with a sticky pad.

[0008] Preferably, the limiting block forms a sliding structure with the fixed block through a sliding groove, and the limiting block is symmetrically arranged with respect to the central axis of the fixed block.

[0009] Preferably, the injection head replacement mechanism includes a connecting tube, a slot, a sealing gasket, a buckle and an injection needle, the connecting tube is connected and installed below the outer wall of the injection tube, slots are provided on both sides of the outer wall of the connecting tube, a sealing gasket for installation is provided on the lower surface of the connecting tube, a buckle is bonded and installed on the inner wall of the sealing gasket, and an injection needle is provided and installed below the outer wall of the sealing gasket.

[0010] Preferably, the buckle is engaged and connected with the connecting pipe via a slot, and the outer wall of the buckle fits tightly with the inner wall of the slot.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The mesenchymal stem cell composition injection device for treating arthritis can ensure stable injection of the mesenchymal stem cell composition by providing a propulsion mechanism, and can facilitate filling of the mesenchymal stem cell composition by providing a composition pouring mechanism, while ensuring that the interior of the injection tube is in a sealed state;

[0013] 2. The mesenchymal stem cell composition injection device for treating arthritis is provided with an injection head replacement mechanism, which facilitates the replacement of the injection needle used for injecting the mesenchymal stem cell composition and prevents leakage of the mesenchymal stem cell composition during injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the injection head replacement mechanism of the utility model;

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

[0017] Figure 4 It is a schematic diagram of the structure of the propulsion mechanism of the utility model.

[0018] In the figure: 1. injection tube; 2. composition injection mechanism; 201. connecting block; 202. first opening; 203. threaded groove; 204. threaded cover plate; 3. pushing mechanism; 301. fixing block; 302. slide groove; 303. pushing tube; 304. limiting block; 305. sticky pad; 4. fixing tube; 5. second opening; 6. injection head replacement mechanism; 601. connecting tube; 602. slot; 603. sealing pad; 604. buckle; 605. injection needle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides a technical solution: a mesenchymal stem cell composition injection device for treating arthritis, comprising an injection tube 1, a composition injection mechanism 2 is fixedly installed on one side of the outer wall of the injection tube 1, and the composition injection mechanism 2 comprises a connecting block 201, a first opening 202, a threaded groove 203 and a threaded cover plate 204. The connecting block 201 is fixedly installed on one side of the outer wall of the injection tube 1, and a first opening 202 is opened on one side of the outer wall of the connecting block 201, and a threaded groove 203 is opened on the inner surface of the first opening 202, and a threaded cover plate 204 with matching size is provided on the inner wall of the threaded groove 203. The stem cell composition is placed into the interior of the injection tube 1 from the inner wall of the threaded groove 203, and the threaded cover plate 204 is rotated to be fixed in the threaded groove 203 opened on the inner surface of the first opening 202, so that the injection place can be sealed;

[0021] A propulsion mechanism 3 that can move up and down is provided above the inner wall of the injection tube 1, and the propulsion mechanism 3 includes a fixed block 301, a slide groove 302, a propulsion tube 303, a limit block 304 and a sticky pad 305. The fixed block 301 is fixedly installed above the outer wall of the injection tube 1, and the inner wall of the fixed block 301 is provided with a slide groove 302. The inner wall of the fixed block 301 is provided with a propulsion tube 303 that can move up and down, the outer wall of the propulsion tube 303 is welded with a limit block 304, and the lower part of the outer wall of the propulsion tube 303 is bonded and installed with a sticky pad 305. The propulsion tube 303 is moved to drive the limit block 304 to move on the inner wall of the slide groove 302, and at the same time drive the sticky pad 305 to move up and down, so that the air inside the fixed tube 4 can be compressed, and at the same time, when the propulsion tube 303 moves up and down, the moving trajectory of the propulsion tube 303 is fixed, so as to avoid changes in the angle of the propulsion tube 303 during use, thereby affecting the injection result during use.

[0022] The limit block 304 forms a sliding structure with the fixed block 301 through the slide groove 302, and the limit block 304 is symmetrically arranged with respect to the central axis of the fixed block 301, so that the position of the propulsion tube 303 can be stably pushed downward to prevent the position of the propulsion tube 303 from being offset;

[0023] A fixing tube 4 is fixedly installed on the upper inner wall of the injection tube 1, a second opening 5 is provided at the lower outer wall of the fixing tube 4, an injection head replacement mechanism 6 for installation is provided at the lower outer wall of the injection tube 1, the injection head replacement mechanism 6 comprises a connecting tube 601, a card slot 602, a sealing gasket 603, a buckle 604 and an injection needle 605, the connecting tube 601 is connected and installed at the lower outer wall of the injection tube 1, card slots 602 are provided on both sides of the outer wall of the connecting tube 601, a sealing gasket 603 for installation is provided on the lower surface of the connecting tube 601, a buckle 604 is bonded to the inner wall of the sealing gasket 603, and an installation device is provided at the lower outer wall of the sealing gasket 603 There is an injection needle 605, and the buckle 604 on the inner wall of the sealing gasket 603 is fixed in the slots 602 opened on both sides of the outer wall of the connecting tube 601, so that it is convenient to replace the injection needle 605. At the same time, the sealing gasket 603 is attached to the surface of the connecting tube 601, which can prevent the leakage of mesenchymal stem cells during injection. The buckle 604 is connected to the connecting tube 601 through the slot 602, and the outer wall of the buckle 604 is tightly attached to the inner wall of the slot 602, so that it is convenient to directly replace the injection needle 605, thereby avoiding infection during the next injection.

[0024] Working principle: First, place the device at the designated position, place the stem cell composition from the inner wall of the thread groove 203 into the interior of the injection tube 1, rotate the threaded cover plate 204 to fix it in the thread groove 203 opened on the inner surface of the first opening 202, so that the injection place can be sealed, move the push tube 303 to drive the limit block 304 to move in the inner wall of the slide groove 302, and drive the sticky pad 305 to move up and down, so that the air inside the fixed tube 4 can be compressed, and when the push tube 303 moves up and down, the push tube 303 The moving trajectory is fixed, so as to avoid changes in the angle of the propulsion tube 303 during use, thereby affecting the injection result during use. The buckle 604 on the inner wall of the sealing gasket 603 is fixed in the slot 602 opened on both sides of the outer wall of the connecting tube 601, so as to facilitate the replacement of the injection needle 605. At the same time, the sealing gasket 603 is attached to the surface position of the connecting tube 601, so as to prevent the leakage of mesenchymal stem cells during injection, thereby completing the operation process of a mesenchymal stem cell composition injection device for treating arthritis.

[0025] 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 mesenchymal stem cell composition injection device for treating arthritis, characterized in that: It comprises an injection tube (1), a composition injection mechanism (2) is fixedly mounted on one side of the outer wall of the injection tube (1), and a propulsion mechanism (3) which can move up and down is arranged above the inner wall of the injection tube (1); The propulsion mechanism (3) comprises a fixed block (301), a slide groove (302), a propulsion tube (303), a limit block (304) and a sticky pad (305); the fixed block (301) is fixedly mounted above the outer wall of the injection tube (1); the inner wall of the fixed block (301) is provided with a slide groove (302); the inner wall of the fixed block (301) is provided with a propulsion tube (303) that can move up and down; the limit block (304) is welded to the outer wall of the propulsion tube (303); and the sticky pad (305) is bonded to the lower part of the outer wall of the propulsion tube (303). A fixing tube (4) is fixedly mounted above the inner wall of the injection tube (1), a second opening (5) is provided below the outer wall of the fixing tube (4), and an injection head replacement mechanism (6) for installation is provided below the outer wall of the injection tube (1).

2. The mesenchymal stem cell composition injection device for treating arthritis according to claim 1, characterized in that: The composition injection mechanism (2) comprises a connecting block (201), a first opening (202), a threaded groove (203) and a threaded cover plate (204); the connecting block (201) is fixedly mounted on one side of the outer wall of the injection tube (1); one side of the outer wall of the connecting block (201) is provided with a first opening (202); the inner surface of the first opening (202) is provided with a threaded groove (203); and the inner wall of the threaded groove (203) is provided with a threaded cover plate (204) of matching size.

3. The mesenchymal stem cell composition injection device for treating arthritis according to claim 1, characterized in that: The limiting block (304) forms a sliding structure with the fixed block (301) through the sliding groove (302), and the limiting block (304) is symmetrically arranged with respect to the central axis of the fixed block (301).

4. The mesenchymal stem cell composition injection device for treating arthritis according to claim 1, characterized in that: The injection head replacement mechanism (6) comprises a connecting tube (601), a slot (602), a sealing gasket (603), a buckle (604) and an injection needle (605); the connecting tube (601) is connected and installed below the outer wall of the injection tube (1); the outer wall of the connecting tube (601) is provided with a slot (602) on both sides; the lower surface of the connecting tube (601) is provided with a sealing gasket (603) for installation; the inner wall of the sealing gasket (603) is bonded with a buckle (604); and the injection needle (605) is arranged and installed below the outer wall of the sealing gasket (603).

5. The mesenchymal stem cell composition injection device for treating arthritis according to claim 4, characterized in that: The buckle (604) is snap-connected to the connecting tube (601) via the slot (602), and the outer wall of the buckle (604) is tightly fitted to the inner wall of the slot (602).

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