Stem cell infusion device

Abstract

The invention belongs to the technical field of medical instruments, and provides a stem cell infusion device which comprises a main pipe and further comprises a hollow mounting cylinder arranged at the second end of the main pipe and communicated with the main pipe; the filtering assembly is arranged in the mounting cylinder, and the filtering assembly is used for filtering floccules in the stem cells; the first end of the first branch pipe is connected with the mounting cylinder and communicated with the mounting cylinder, the second end of the first branch pipe extends freely, a first plug is arranged at the second end of the first branch pipe, and the first plug is used for connecting the first branch pipe with the stem cell storage bag. The stem cell infusion device is simple in structure and reasonable in design, floccules in stem cells can be removed through the filtering assembly, and therefore blockage of a puncture needle and a pipeline caused by the floccules can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a stem cell infusion device. Background Art

[0002] In modern medicine, stem cell transfusion technology has become a hot topic in biomedical research and clinical application due to its enormous potential in tissue repair, regenerative medicine, and the treatment of a variety of difficult diseases. By transfusing stem cells, which possess the ability to self-renew and multidirectionally differentiate, back into patients, it can effectively promote the repair and functional restoration of damaged tissues, offering new hope for treatment for numerous patients.

[0003] However, during the actual stem cell infusion process, flocs often appear in stem cell preparations due to the biological characteristics of stem cells and the influence of storage and transportation. Existing stem cell infusion devices only provide conventional infusion functions and lack effective mechanisms to deal with flocs. Once these flocs enter the puncture needle or infusion tube during the infusion process, they can easily cause blockage of the puncture needle or even the infusion tube, not only interrupting the stem cell infusion treatment process but also affecting the treatment effect. Summary of the Invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a stem cell infusion device to solve or alleviate the above-mentioned technical problems and one or more other technical problems in the prior art.

[0005] To achieve the above objectives, the present invention provides a stem cell infusion device, comprising a main tube and:

[0006] a mounting tube, which is arranged at the second end of the main pipe, the mounting tube being hollow and communicating with the main pipe;

[0007] a filter assembly, which is disposed in the mounting cylinder and is used to filter flocs in the stem cells; and

[0008] The first branch tube has a first end connected to and communicated with the mounting tube and a second end extending freely. The second end of the first branch tube is provided with a first plug for connecting the first branch tube to the stem cell storage bag.

[0009] Furthermore, it also includes:

[0010] a second branch tube, a first end of which is connected to the circumferential wall of the mounting tube and communicates with the mounting tube, and the first end of the second branch tube is located below the filter assembly, and a second end of the second branch tube is provided with a second plug, the second plug being used to connect the second branch tube to a physiological saline storage bag;

[0011] a third branch pipe, a first end of which is connected to and communicates with the mounting cylinder, a second end of which is freely extending, and the first end of the third branch pipe is located above the filter assembly; and

[0012] A selection switch is provided on the mounting tube, and the selection switch has a first working state and a second working state;

[0013] Wherein, when the selection switch is in the first working state, the first branch pipe and the main pipe are both connected to the installation tube, and the third branch pipe and the second branch pipe are both disconnected from the installation tube;

[0014] When the selection switch is in the second working state, the second branch pipe and the third branch pipe are both connected to the installation cylinder, and the main pipe and the first branch pipe are both disconnected from the installation cylinder.

[0015] Furthermore, the selection switch also has a third working state and a fourth working state;

[0016] Wherein, when the selection switch is in the third working state, the second branch pipe and the main pipe are connected to the installation cylinder, and the third branch pipe and the first branch pipe are disconnected from the installation cylinder;

[0017] When the selection switch is in the fourth working state, the first branch pipe, the second branch pipe and the main pipe are all connected to the installation cylinder, and the third branch pipe is disconnected from the installation cylinder.

[0018] Furthermore, the selection switch includes:

[0019] a first rotating shaft, which is coaxially arranged with the mounting barrel and rotatably connected to the mounting barrel, the first rotating shaft being arranged above the filter assembly, the first end of the first rotating shaft extending into the mounting barrel and the second end extending outside the mounting barrel;

[0020] a first knob, which is disposed at the second end of the first rotating shaft and is transmission-connected to the first rotating shaft;

[0021] a second rotating shaft, which is coaxially arranged with the mounting barrel and rotatably connected to the mounting barrel, the second rotating shaft being located below the filter assembly, the first end of the second rotating shaft being inserted into the mounting barrel and the second end of the second rotating shaft extending outside the mounting barrel;

[0022] a second knob, which is disposed at the second end of the second rotating shaft, and the second knob is drivingly connected to the second rotating shaft;

[0023] a first valve body coaxially disposed within the mounting barrel and located above the filter assembly, the first valve body being rotatably connected to the mounting barrel, the circumferential wall of the first valve body being sealed against the inner wall of the mounting barrel, and the first valve body being drivingly connected to the first rotating shaft;

[0024] a third valve body coaxially disposed in the mounting barrel and located below the filter assembly, the third valve body being fixedly connected to the mounting barrel, and a circumferential wall of the third valve body being sealed against an inner sidewall of the mounting barrel;

[0025] a second valve body coaxially disposed within the mounting cylinder and located between the third valve body and the filter assembly, with side walls of the second valve body and the third valve body on opposite sides tightly contacting each other, the second valve body being rotatably connected to the mounting cylinder, the circumferential wall of the second valve body being sealed against the inner side wall of the mounting cylinder, and the second valve body being drivingly connected to the second rotating shaft;

[0026] a first conduit disposed in the mounting cylinder, wherein a first end of the first conduit is connected to and communicates with the first branch pipe, and a second end of the first conduit contacts and is sealed against a top sidewall of the first valve body;

[0027] a second conduit disposed in the mounting tube, wherein a first end of the second conduit is connected to and communicates with the third branch pipe, and a second end of the second conduit contacts and is sealed against a top sidewall of the first valve body;

[0028] Wherein, the first valve body is provided with a first through hole extending along its own axial direction;

[0029] The second valve body is provided with a first water channel and a second water channel, and a second through hole and a third through hole extending along its own axial direction, wherein the liquid inlet ends of the first water channel and the second water channel are located on the circumferential wall of the second valve body, and the liquid outlet ends are located on the top end wall of the second valve body;

[0030] The third valve body is provided with a fourth through hole extending along its own axial direction, and the fourth through hole cooperates with the second through hole and the third through hole;

[0031] When the selection switch is in the first working state, the first through hole corresponds to the first conduit, the second through hole corresponds to the fourth through hole, and neither the first water channel nor the second water channel corresponds to the second branch pipe;

[0032] When the selection switch is in the second working state, the first through hole corresponds to the second conduit, the first water channel corresponds to the second branch pipe, and neither the second through hole nor the third through hole corresponds to the fourth through hole;

[0033] When the selection switch is in the third working state, the first through hole does not correspond to any of the first conduit and the second conduit, the second water channel corresponds to the second branch pipe, and the third through hole corresponds to the fourth through hole.

[0034] When the selection switch is in the fourth working state, the first through hole corresponds to the first conduit, the second water channel corresponds to the second branch pipe, and the third through hole corresponds to the fourth through hole.

[0035] Furthermore, the first conduit and the second conduit include:

[0036] an outer tube, a first end of which is connected to the first branch tube or the third branch tube, a second end of which extends into the mounting tube, and the outer tube is fixedly connected to the mounting tube;

[0037] an inner tube, a first end of which is movably inserted in the outer tube, an outer circumferential wall of the inner tube and an inner circumferential wall of the outer tube being sealed, and a second end of the inner tube abutting against a top end wall of the first valve body; and

[0038] An elastic member is sleeved on the inner tube and the outer tube, and the two ends of the elastic member are respectively connected to the inner tube and the mounting tube. In a natural state, the elastic member applies elastic force to the inner tube so that the inner tube has a tendency to move toward the direction close to the first valve body.

[0039] Furthermore, the first valve body is provided with a first blind hole extending along the axis direction of the first valve body;

[0040] Wherein, when the selection switch is in the third working state, the first blind hole corresponds to any one of the first conduit and the second conduit.

[0041] Furthermore, the top ends of the first through hole and the first blind hole are provided with tapered countersunk holes, and the second end of the inner tube is adapted to the tapered countersunk holes.

[0042] Furthermore, the selection switch further includes a first positioning ring;

[0043] The first positioning ring is sleeved on the first conduit and the second conduit, and the first valve body is correspondingly provided with a first positioning groove adapted to the first positioning ring. The first positioning ring is coaxially arranged in the first positioning groove and rotatably connected to the first valve body, and the side wall of the first positioning ring is sealed with the side wall of the first positioning groove.

[0044] Beneficial effects of the present invention:

[0045] The stem cell infusion device provided by the present invention has a simple structure and a reasonable design. By providing a filtering component, it can remove floccules in the stem cells during the stem cell reinfusion process, thereby achieving the purpose of avoiding clogging of the puncture needle and the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0047] Figure 1 A three-dimensional view of a stem cell infusion device provided by one embodiment of the present invention;

[0048] Figure 2 for Figure 1 An enlarged view of section A is shown;

[0049] Figure 3 for Figure 1 A structural view of the mounting cartridge, filter assembly, and rotary switch of the stem cell infusion device shown;

[0050] Figure 4 for Figure 1 A three-dimensional view of a first valve body of a rotary switch of the stem cell infusion device shown;

[0051] Figure 5 for Figure 1 An exploded perspective view of the second valve body and the third valve body of the rotary switch of the stem cell infusion device shown;

[0052] Figure 6 for Figure 1 A perspective view of a first knob of a rotary switch of the stem cell infusion device shown;

[0053] Figure 7 for Figure 1 A perspective view of the second knob of the rotary switch of the stem cell infusion device is shown.

[0054] Reference numerals:

[0055] 100, main pipe; 110, flow regulator; 120, Moffitt's dropper; 130, puncture needle; 140, mounting tube; 150, first branch pipe; 160, second branch pipe; 170, third branch pipe; 200, filter assembly; 210, retaining ring; 220, filter screen; 311, first rotating shaft; 312, first knob; 304, first identification mark; 305, second identification mark; 321, second rotating shaft; 322, second knob; 306, third identification mark; 307, fourth identification mark; 308, fifth identification mark; 330, first valve body; 331 , first through hole; 332, first blind hole; 333, tapered countersunk hole; 334, first positioning groove; 340, third valve body; 341, fourth through hole; 342, third positioning groove; 350, second valve body; 351, first water channel; 352, second water channel; 353, second through hole; 354, third through hole; 355, second positioning groove; 356, third positioning portion; 361, first conduit; 362, second conduit; 301, outer tube; 302, inner tube; 303, elastic member; 370, first positioning ring; 380, second positioning ring. DETAILED DESCRIPTION

[0056] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0057] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0058] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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 should not be understood as limiting the present invention.

[0059] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the present invention, "plurality" means more than two, unless otherwise specifically defined.

[0060] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0061] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0062] like Figure 1-Figure 7 As shown, the present invention provides a stem cell infusion device, which includes a main pipe 100, a flow regulator 110 and a Moffitt dropper 120.

[0063] The first end of the main tube 100 is provided with a puncture needle 130, which is used to puncture a patient's blood vessel to connect the main tube 100 to the target blood vessel. A flow regulator 110 is mounted on the main tube 100 and is used to adjust the infusion flow rate. A Moffitt dropper 120 is mounted on the main tube 100 and is used to monitor the infusion flow rate. These are all prior art and will not be described in detail here.

[0064] In this embodiment, the stem cell infusion device further includes a mounting barrel 140 , a filter assembly 200 , and a first branch tube 150 .

[0065] Among them, the mounting cylinder 140 is arranged at the second end of the main pipe 100, and the mounting cylinder 140 is hollow and communicated with the main pipe 100. The filter assembly 200 is arranged in the mounting cylinder 140, and the filter assembly 200 is used to filter the flocs in the stem cells to prevent them from clogging the pipeline. Specifically, the filter assembly 200 includes a fixing ring 210 and a filter screen 220. The fixing ring 210 is coaxially arranged with the mounting cylinder 140 and fixedly connected to the mounting cylinder 140, and the filter screen 220 is fixedly mounted on the inner side wall of the fixing ring 210. The first end of the first branch pipe 150 is connected to the mounting cylinder 140 and communicated with the mounting cylinder 140, and the second end extends freely, and the second end of the first branch pipe 150 is provided with a first plug, and the first plug is used to connect the first branch pipe 150 to the stem cell storage bag.

[0066] During use, the stem cell infusion device is connected to the stem cell storage bag via the first plug. The puncture needle 130 is inserted into the patient's blood vessel. The flow regulator 110 is opened to administer the stem cell infusion. During this process, flocculent matter within the stem cells is trapped within the mounting tube 140 by the filter assembly 200, preventing clogging of the puncture needle 130 and the main tube 100.

[0067] like Figure 1 、 Figure 2 As shown, in this embodiment, a second branch pipe 160, a third branch pipe 170 and a selection switch are also included.

[0068] The first end of the second branch tube 160 is connected to the mounting tube 140 and communicates with the mounting tube 140, and the first end of the second branch tube 160 is located below the filter assembly 200. The second end of the second branch tube 160 is provided with a second plug, and the second plug is used to connect the second branch tube 160 to the physiological saline storage bag.

[0069] The first end of the third branch pipe 170 is connected to and communicates with the mounting tube 140, and the second end extends freely. The first end of the third branch pipe 170 is located above the filter assembly 200. A selector switch is provided on the mounting tube 140. The selector switch has a first operating state and a second operating state. When the selector switch is in the first operating state, the first branch pipe 150 and the main pipe 100 are both connected to the mounting tube 140, and the third branch pipe 170 and the second branch pipe 160 are both disconnected from the mounting tube 140. When the selector switch is in the second operating state, the second branch pipe 160 and the third branch pipe 170 are both connected to the mounting tube 140, and the main pipe 100 and the first branch pipe 150 are both disconnected from the mounting tube 140.

[0070] During operation, when only stem cells need to be infused into the patient, the selection switch is placed in the first working state, thereby connecting the first branch tube 150 and the main tube 100. The stem cells in the stem cell storage bag can enter the installation cylinder 140 from the first branch tube 150 and finally be transported from the main tube 100 into the target blood vessel of the patient, thereby achieving the purpose of normal stem cell infusion for the patient.

[0071] When the filter assembly 200 is clogged due to excessive flocculent matter, the selector switch is placed in the second working state, thereby connecting the second branch pipe 160 with the third branch pipe 170. At this time, the saline storage bag is squeezed, and the saline enters the installation cylinder 140 through the second branch pipe 160, passes through the filter assembly 200, and is finally discharged from the third branch pipe 170, thereby cleaning the filter assembly 200 and re-draining the filter assembly 200.

[0072] In this embodiment, the selection switch further has a third working state and a fourth working state.

[0073] Among them, when the selection switch is in the third working state, the second branch pipe 160 and the main pipe 100 are connected to the installation tube 140, and the third branch pipe 170 and the first branch pipe 150 are disconnected from the installation tube 140; when the selection switch is in the fourth working state, the first branch pipe 150, the second branch pipe 160 and the main pipe 100 are all connected to the installation tube 140, and the third branch pipe 170 is disconnected from the installation tube 140.

[0074] When only saline solution is required to be infused to the patient, the selection switch is placed in the third working state, and the saline solution in the saline storage bag enters the mounting cylinder 140 through the second branch tube 160 and is finally infused into the patient's body through the main tube 100.

[0075] When it is necessary to infuse both saline and stem cells into the patient simultaneously, the selection switch is placed in the fourth working state. The saline in the saline storage bag and the stem cells in the stem cell storage bag enter the installation cylinder 140 through the second branch tube 160 and the first branch tube 150 respectively, and are finally infused into the patient's body through the main tube 100.

[0076] like Figure 3-Figure 5 As described above, in this embodiment, the selection switch includes a first shaft 311 , a first knob 312 , a second shaft 321 , a second knob 322 , a first valve body 330 , a third valve body 340 , a second valve body 350 , a first conduit 361 , and a second conduit 362 .

[0077] The first rotating shaft 311 is coaxially disposed with and rotationally connected to the mounting barrel 140. The first rotating shaft 311 is disposed above the filter assembly 200. The first end of the first rotating shaft 311 extends into the mounting barrel 140, and the second end extends outside the mounting barrel 140. The first knob 312 is mounted at the second end of the first rotating shaft 311 and is in driving connection with the first rotating shaft 311, so that the first rotating shaft 311 can be driven to rotate by applying torque to the first knob 312.

[0078] The second rotating shaft 321 is coaxially disposed with the mounting barrel 140 and is rotatably connected thereto. The second rotating shaft 321 is located below the filter assembly 200. The first end of the second rotating shaft 321 is inserted into the mounting barrel 140, and the second end extends outside the mounting barrel 140. A second knob 322 is mounted on the second end of the second rotating shaft 321. The second knob 322 is in driving connection with the second rotating shaft 321, such that the second rotating shaft 321 can be driven to rotate by applying torque to the second knob 322.

[0079] The first valve body 330 is coaxially disposed within the mounting barrel 140 and is located above the filter assembly 200. The first valve body 330 is rotatably connected to the mounting barrel 140, and the circumferential wall of the first valve body 330 is sealed against the inner wall of the mounting barrel 140. The first valve body 330 is drivingly connected to the first rotating shaft 311, so that the second valve body 350 can be driven to rotate by applying torque to the first rotating shaft 311.

[0080] The third valve body 340 is coaxially disposed in the mounting cylinder 140 and is located below the filter assembly 200 . The third valve body 340 is fixedly connected to the mounting cylinder 140 , and the circumferential wall of the third valve body 340 is sealed against the inner wall of the mounting cylinder 140 .

[0081] The second valve body 350 is coaxially disposed within the mounting barrel 140 and positioned between the third valve body 340 and the filter assembly 200. The sidewalls of the second valve body 350 and the third valve body 340 on opposite sides tightly contact each other to maintain a seal. The second valve body 350 is rotationally coupled to the mounting barrel 140, and the circumferential wall of the second valve body 350 maintains a seal with the inner sidewall of the mounting barrel 140. The second valve body 350 is drivingly coupled to the second rotating shaft 321, so that the second valve body 350 can be driven to rotate by applying torque to the second rotating shaft 321.

[0082] A first conduit 361 is disposed within the mounting tube 140. A first end of the first conduit 361 is connected to and communicates with the first branch pipe 150, and a second end thereof abuts against and is sealed against the top sidewall of the first valve body 330. A second conduit 362 is disposed within the mounting tube 140. A first end of the second conduit 362 is connected to and communicates with the third branch pipe 170, and a second end thereof abuts against and is sealed against the top sidewall of the first valve body 330.

[0083] The first valve body 330 is provided with a first through hole 331 extending along its own axial direction.

[0084] The second valve body 350 is provided with a first water channel 351 and a second water channel 352 and a second through hole 353 and a third through hole 354 extending along its own axial direction, wherein the liquid inlet ends of the first water channel 351 and the second water channel 352 are located at the circumferential wall of the second valve body 350, and the liquid outlet ends are located at the top end wall of the second valve body 350.

[0085] The third valve body 340 is provided with a fourth through hole 341 extending along its own axial direction. The fourth through hole 341 cooperates with the second through hole 353 and the third through hole 354, so that the second through hole 353 and the third through hole 354 can be made to correspond to the fourth through hole 341 respectively by rotating the second valve body 350.

[0086] During operation, when the selection switch is in the first working state, the first through hole 331 corresponds to the first conduit 361 , while the second through hole 353 corresponds to the fourth through hole 341 , and the first water channel 351 and the second water channel 352 do not correspond to the second branch pipe 160 .

[0087] When the selection switch is in the second working state, the first through hole 331 corresponds to the second conduit 362 , the first water channel 351 corresponds to the second branch pipe 160 , and the second through hole 353 and the third through hole 354 do not correspond to the fourth through hole 341 .

[0088] When the selection switch is in the third working state, the first through hole 331 does not correspond to any of the first conduit 361 and the second conduit 362 , the second water channel 352 corresponds to the second branch pipe 160 , and the third through hole 354 corresponds to the fourth through hole 341 .

[0089] When the selection switch is in the fourth working state, the first through hole 331 corresponds to the first conduit 361 , the second water channel 352 corresponds to the second branch pipe 160 , and the third through hole 354 corresponds to the fourth through hole 341 .

[0090] Specifically, during operation, the first knob 312 is rotated to align the first through hole 331 with the first conduit 361. At the same time, the second knob 322 is rotated to align the second through hole 353 with the fourth through hole 341. At this time, the stem cells in the stem cell storage bag pass through the first branch tube 150, the first conduit 361, the first through hole 331, the filter assembly 200, the second through hole 353, the fourth through hole 341, the main tube 100 and the puncture needle 130 in sequence, and are then injected into the patient's body.

[0091] By turning the first knob 312, the first through hole 331 is aligned with the second conduit 362. At the same time, by turning the second knob 322, the first water channel 351 is aligned with the second branch pipe 160. The saline storage bag is squeezed, and the saline passes through the second branch pipe 160, the first water channel 351, the filter assembly 200, the first through hole 331, the second conduit 362, and finally is discharged from the third branch pipe 170, thereby cleaning the filter assembly 200.

[0092] By rotating first knob 312, first through hole 331 is no longer aligned with either first tube 361 or second tube 362. Simultaneously, by rotating second knob 322, second water channel 352 is aligned with second branch tube 160. The saline in the saline storage bag then passes sequentially through second branch tube 160, second water channel 352, third through hole 354, fourth through hole 341, main tube 100, and puncture needle 130, and is then infused into the patient's body.

[0093] Rotating the first knob aligns the first through-hole 331 with the first conduit 361. Simultaneously, rotating the second knob 322 aligns the second water channel 352 with the second branch tube 160. The stem cells in the stem cell storage bag sequentially pass through the first branch tube 150, the first conduit 361, the first through-hole 331, the filter assembly 200, the third through-hole 354, the fourth through-hole 341, the main tube 100, and the puncture needle 130, before being infused into the patient's body. The saline solution in the saline storage bag sequentially passes through the second branch tube 160, the second water channel 352, the third through-hole 354, the fourth through-hole 341, the main tube 100, and the puncture needle 130, before being infused into the patient's body.

[0094] The selector switch of this structure has a simple structure, reasonable design and easy operation.

[0095] like Figure 3 As shown, the first conduit 361 and the second conduit 362 include an outer tube 301 , an inner tube 302 and an elastic member 303 .

[0096] The first end of the outer tube 301 is connected to the first branch tube 150 or the third branch tube 170, and the second end extends into the mounting tube 140. The outer tube 301 is fixedly connected to the mounting tube 140. The first end of the inner tube 302 is movably inserted into the outer tube 301 to enable the inner tube 302 to move along the axis of the outer tube 301. The outer circumferential wall of the inner tube 302 maintains a seal with the inner circumferential wall of the outer tube 301. The second end of the inner tube 302 contacts the top end wall of the first valve body 330.

[0097] The elastic member 303 is sleeved over the inner tube 302 and the outer tube 301. The ends of the elastic member 303 are connected to the inner tube 302 and the mounting cylinder 140, respectively. In its natural state, the elastic member 303 applies an elastic force to the inner tube 302, causing the inner tube 302 to move toward the first valve body 330. Specifically, the elastic member 303 is any component capable of applying an elastic force to the inner tube 302, such as a pneumatic spring, a hydraulic spring, a rubber spring, or a spring. In this embodiment, the elastic member 303 is a spring.

[0098] Under the action of the elastic force of the elastic member 303 , the second end of the inner tube 302 always keeps in contact with the top end wall of the first valve body 330 , thereby achieving the purpose of improving the reliability of the seal.

[0099] like Figure 4 As shown, in this embodiment, the first valve body 330 is provided with a first blind hole 332 extending along its own axial center line. When the selector switch is in the third working state, the first blind hole 332 corresponds to any one of the first conduit 361 and the second conduit 362.

[0100] like Figure 4As shown, a conical countersunk hole 333 is provided at the top end of the first through hole 331 and the first blind hole 332, and the second end of the inner tube 302 is adapted to the conical countersunk hole 333 to improve the sealing effect. At the same time, when the second end of the inner tube 302 is inserted into the conical countersunk hole 333, rotating the first knob 312 will inevitably require a larger torque. Therefore, it is possible to sense the size of the torque to determine whether the inner tube 302 is inserted into the conical countersunk hole 333.

[0101] like Figure 6 As shown, the first knob 312 is provided with a first mark 304 and a second mark 305 for indicating the first through hole 331 and the first blind hole 332 respectively.

[0102] Among them, when the first mark 304 corresponds to the first branch pipe 150, it means that the first through hole 331 corresponds to the first conduit 361; when the first mark 304 corresponds to the third branch pipe 170, it means that the first through hole 331 corresponds to the second conduit 362; when the second mark 305 corresponds to the first branch pipe 150, it means that the first blind hole 332 corresponds to the first conduit 361; when the second mark 305 corresponds to the third branch pipe 170, it means that the first blind hole 332 corresponds to the second conduit 362.

[0103] The second knob 322 is provided with a third mark 306 , a fourth mark 307 and a fifth mark 308 for indicating the first water channel 351 , the second water channel 352 and the second through hole 353 , respectively.

[0104] Among them, when the third mark 306 corresponds to the second branch pipe 160, it means that the first water channel 351 corresponds to the second branch pipe 160; when the fourth mark 307 corresponds to the second branch pipe 160, it means that the second water channel 352 corresponds to the second branch pipe 160; when the fifth mark 308 corresponds to the second branch pipe 160, it means that the second through hole 353 corresponds to the second branch pipe 160.

[0105] In this embodiment, the purpose of improving the convenience of operation is achieved by setting the logo.

[0106] like Figure 3 As shown, the selector switch further includes a first positioning ring 370 .

[0107] The first positioning ring 370 is sleeved on the first conduit 361 and the second conduit 362, and the first valve body 330 is correspondingly provided with a first positioning groove 334 adapted to the first positioning ring 370. The first positioning ring 370 is coaxially arranged in the first positioning groove 334 and is rotatably connected to the first valve body 330, and the side wall of the first positioning ring 370 and the mutually matching side wall of the first positioning groove 334 are kept sealed, that is, the first positioning ring and the inner circumferential wall, outer circumferential wall and bottom side wall of the first positioning groove are kept sealed.

[0108] In this embodiment, by providing the first positioning ring 370, the stability of the first conduit 361 and the second conduit 362 can be increased to prevent the first conduit 361 and the second conduit 362 from being deformed. At the same time, the reliability and stability of the seal between the first conduit 361 and the second conduit 362 and the first valve body 330 can be improved.

[0109] like Figure 3 As shown, the selector switch further includes a second positioning ring 380 .

[0110] The second positioning ring 380 is fixedly connected to the second branch pipe 160, and the circumferential wall of the second valve body 350 is correspondingly provided with a second positioning groove 355 adapted to the second positioning ring 380. The second positioning ring 380 is coaxially arranged in the second positioning groove 355 and is rotatably connected to the second valve body 350, and the side wall of the second positioning ring 380 and the mutually matching side wall of the second positioning groove 355 remain sealed, that is, the inner circumferential wall, outer circumferential wall and bottom side wall of the second positioning ring and the second positioning groove remain sealed.

[0111] In this embodiment, by providing the second positioning ring 380 , the reliability and stability of the seal between the second branch pipe 160 and the second valve body 350 can be improved.

[0112] like Figure 5 As shown, a third positioning groove 342 is provided on the top side wall of the third valve body 340, and a third positioning portion 356 is provided on the bottom of the second valve body 350 to match the third positioning groove 342. The side walls of the third positioning groove 342 and the third positioning portion 356 that cooperate with each other maintain density, that is, the inner circumferential wall, outer circumferential wall and bottom side wall of the third positioning ring and the third positioning groove remain sealed.

[0113] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A stem cell infusion device, comprising a main tube, characterized in that: Also includes: a mounting tube, which is arranged at the second end of the main pipe, the mounting tube being hollow and communicating with the main pipe; A filter assembly is disposed in the mounting cylinder and is used to filter floccules in stem cells; as well as The first branch tube has a first end connected to and communicated with the mounting tube and a second end extending freely. The second end of the first branch tube is provided with a first plug for connecting the first branch tube to the stem cell storage bag.

2. The stem cell infusion device according to claim 1, characterized in that: Also includes: a second branch tube, a first end of which is connected to the circumferential wall of the mounting tube and communicates with the mounting tube, and the first end of the second branch tube is located below the filter assembly, and a second end of the second branch tube is provided with a second plug, the second plug being used to connect the second branch tube to a physiological saline storage bag; a third branch pipe, a first end of which is connected to and communicates with the mounting cylinder, a second end of which is freely extending, and the first end of the third branch pipe is located above the filter assembly; as well as A selection switch is provided on the mounting tube, and the selection switch has a first working state and a second working state; Wherein, when the selection switch is in the first working state, the first branch pipe and the main pipe are both connected to the installation tube, and the third branch pipe and the second branch pipe are both disconnected from the installation tube; When the selection switch is in the second working state, the second branch pipe and the third branch pipe are both connected to the installation cylinder, and the main pipe and the first branch pipe are both disconnected from the installation cylinder.

3. The stem cell infusion device according to claim 2, characterized in that: The selection switch also has a third working state and a fourth working state; Wherein, when the selection switch is in the third working state, the second branch pipe and the main pipe are connected to the installation cylinder, and the third branch pipe and the first branch pipe are disconnected from the installation cylinder; When the selection switch is in the fourth working state, the first branch pipe, the second branch pipe and the main pipe are all connected to the installation cylinder, and the third branch pipe is disconnected from the installation cylinder.

4. The stem cell infusion device according to claim 3, characterized in that: The selection switch includes: a first rotating shaft, which is coaxially arranged with the mounting barrel and rotatably connected to the mounting barrel, the first rotating shaft being arranged above the filter assembly, the first end of the first rotating shaft extending into the mounting barrel and the second end extending outside the mounting barrel; a first knob, which is disposed at the second end of the first rotating shaft and is transmission-connected to the first rotating shaft; a second rotating shaft, which is coaxially arranged with the mounting barrel and rotatably connected to the mounting barrel, the second rotating shaft being located below the filter assembly, the first end of the second rotating shaft being inserted into the mounting barrel and the second end of the second rotating shaft extending outside the mounting barrel; a second knob, which is disposed at the second end of the second rotating shaft, and the second knob is drivingly connected to the second rotating shaft; a first valve body coaxially disposed within the mounting barrel and located above the filter assembly, the first valve body being rotatably connected to the mounting barrel, the circumferential wall of the first valve body being sealed against the inner wall of the mounting barrel, and the first valve body being drivingly connected to the first rotating shaft; a third valve body coaxially disposed in the mounting barrel and located below the filter assembly, the third valve body being fixedly connected to the mounting barrel, and a circumferential wall of the third valve body being sealed against an inner sidewall of the mounting barrel; a second valve body coaxially disposed within the mounting cylinder and located between the third valve body and the filter assembly, with side walls of the second valve body and the third valve body on opposite sides tightly contacting each other, the second valve body being rotatably connected to the mounting cylinder, the circumferential wall of the second valve body being sealed against the inner side wall of the mounting cylinder, and the second valve body being drivingly connected to the second rotating shaft; a first conduit disposed in the mounting cylinder, wherein a first end of the first conduit is connected to and communicates with the first branch pipe, and a second end of the first conduit contacts and is sealed against a top sidewall of the first valve body; a second conduit disposed in the mounting tube, wherein a first end of the second conduit is connected to and communicates with the third branch pipe, and a second end of the second conduit contacts and is sealed against a top sidewall of the first valve body; Wherein, the first valve body is provided with a first through hole extending along its own axial direction; The second valve body is provided with a first water channel and a second water channel, and a second through hole and a third through hole extending along its own axial direction, wherein the liquid inlet ends of the first water channel and the second water channel are located on the circumferential wall of the second valve body, and the liquid outlet ends are located on the top end wall of the second valve body; The third valve body is provided with a fourth through hole extending along its own axial direction, and the fourth through hole cooperates with the second through hole and the third through hole; When the selection switch is in the first working state, the first through hole corresponds to the first conduit, the second through hole corresponds to the fourth through hole, and neither the first water channel nor the second water channel corresponds to the second branch pipe; When the selection switch is in the second working state, the first through hole corresponds to the second conduit, the first water channel corresponds to the second branch pipe, and neither the second through hole nor the third through hole corresponds to the fourth through hole; When the selection switch is in the third working state, the first through hole does not correspond to any of the first conduit and the second conduit, the second water channel corresponds to the second branch pipe, and the third through hole corresponds to the fourth through hole. When the selection switch is in the fourth working state, the first through hole corresponds to the first conduit, the second water channel corresponds to the second branch pipe, and the third through hole corresponds to the fourth through hole.

5. The stem cell infusion device according to claim 4, characterized in that: The first conduit and the second conduit include: an outer tube, a first end of which is connected to the first branch tube or the third branch tube, a second end of which extends into the mounting tube, and the outer tube is fixedly connected to the mounting tube; an inner tube, a first end of which is movably inserted in the outer tube, an outer circumferential wall of the inner tube and an inner circumferential wall of the outer tube being sealed, and a second end of the inner tube abutting against a top end wall of the first valve body; and An elastic member is sleeved on the inner tube and the outer tube, and the two ends of the elastic member are respectively connected to the inner tube and the mounting tube. In a natural state, the elastic member applies elastic force to the inner tube so that the inner tube has a tendency to move toward the direction close to the first valve body.

6. The stem cell infusion device according to claim 5, characterized in that: The first valve body is provided with a first blind hole extending along the axis direction of the first valve body; Wherein, when the selection switch is in the third working state, the first blind hole corresponds to any one of the first conduit and the second conduit.

7. The stem cell infusion device according to claim 6, characterized in that: The top ends of the first through hole and the first blind hole are provided with tapered countersunk holes, and the second end of the inner tube is adapted to the tapered countersunk holes.

8. The stem cell infusion device according to any one of claims 4 to 7, characterized in that: The selector switch further includes a first positioning ring; The first positioning ring is sleeved on the first conduit and the second conduit, and the first valve body is correspondingly provided with a first positioning groove adapted to the first positioning ring. The first positioning ring is coaxially arranged in the first positioning groove and rotatably connected to the first valve body, and the side wall of the first positioning ring is sealed with the side wall of the first positioning groove.

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