Cartridge for single piston based cylinder pump
Patent Information
- Authority / Receiving Office
- KR · KR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2026-08-12
Smart Images
Figure PAT00004_ABST
Abstract
Description
Technology Field
[0001] The present invention relates to a cartridge for a cylinder pump, and more specifically, to a cartridge for a cylinder pump used in a drug infusion pump, wherein continuous drug infusion can be performed using a single rotary piston, and high-speed infusion and suction can be achieved through high-speed rotation of the drive unit. Background Technology
[0002] In the case of an automatic drug infusion pump, it is necessary to infuse accurately in real time as well as infuse a large amount of drug over a long period of time.
[0003] However, in the case of conventional peristaltic infusion pumps, there are problems such as back pressure occurring or difficulty in forced pressure infusion because the real-time infusion pressure is not high.
[0004] In contrast, syringe-type drug infusion pumps are being developed as drug infusion pumps, such as Korean Registered Patent No. 10-0948632. However, in the case of such drug infusion pumps, the drug is inhaled and then expelled through the up-and-down movement of a piston, that is, a unidirectional stroke drive, so the inhalation and expulsion are performed discontinuously. Consequently, the single-dose infusion volume is limited to a maximum of about 50 mL, which causes the problem of having to detach and reattach the pump for repeated infusions, and this leads to problems such as the generation of bubbles.
[0005] Accordingly, as described in Korean registered patent No. 10-2182592, a drug infusion pump with a rotary drive motor has been developed, and by individually controlling two pistons with two motors and rotating them alternately to continuously alternately perform the inhalation and discharge of drugs, the disadvantages of conventional drug infusion pumps using stroke drive can be compensated for.
[0006] However, as the two pistons are individually controlled by two motors, the structure and operation are complex, and consequently, there is a limitation in that high-speed suction and discharge are difficult. Prior art literature
[0007] Republic of Korea Registered Patent No. 10-0948632 Republic of Korea Registered Patent No. 10-2182592 The problem to be solved
[0008] Accordingly, the technical problem of the present invention is conceived from this point, and the objective of the present invention is to provide a single-piston-based cylinder pump cartridge used in a drug infusion pump that can perform continuous drug infusion using a single rotary piston, enables high-speed infusion and suction through high-speed rotation of the drive unit, and allows for a relatively simple structure and manufacturing. means of solving the problem
[0009] A cartridge for a cylinder pump according to one embodiment for realizing the purpose of the present invention described above comprises lower and upper cases, a disc portion, a ball portion, and a rotary valve portion. The lower and upper cases are coupled to each other to form a storage space. The disc portion is stored in the storage space and rotates by an external driving force. The ball portion is connected to one side of the disc portion and rotates integrally with the disc portion. The rotary valve portion is provided on one side of the lower and upper cases, is coupled to and released from the ball portion, and rotates to introduce or discharge fluid into or out of the storage space.
[0010] In one embodiment, an opening for opening the storage space is formed on one side of the lower and upper cases, and the rotary valve part can rotate on the opening.
[0011] In one embodiment, the rotary valve portion may include a central shaft rotatably fixed to the lower and upper cases, and a plurality of wings extending from the central shaft.
[0012] In one embodiment, an insertion space into which the ball portion is inserted may be formed between the adjacent wings.
[0013] In one embodiment, as the disc portion rotates, the ball portion is inserted into the insertion space and then detached from the insertion space, so that the rotary valve portion can rotate on the opening.
[0014] In one embodiment, each of the wings may include a horizontal plane extending outwardly in a plane from the central axis, an inner surface extending outwardly from the central axis having the same curvature as the outer surface of the ball portion, and an outer surface formed as a curved surface connecting the horizontal plane and the inner surface.
[0015] In one embodiment, as the rotary valve part rotates, the outer surface can open or close the opening.
[0016] In one embodiment, the opening has an inlet formed on one side for the fluid to flow in and an outlet formed on the other side for the fluid to flow out, centered on the central axis, and the outer surface can open or close at least one of the inlet and the outlet.
[0017] In one embodiment, it may further include an inlet connector connected to be open to the inlet and extending to the outside of the upper case, and an outlet connector connected to be open to the outlet and extending to the outside of the upper case.
[0018] In one embodiment, the disk portion may rotate clockwise or counterclockwise.
[0019] In one embodiment, one end is inserted into a groove formed in the disk portion, and the other end is fixed to the ball portion, and may further include a pin portion extending for a predetermined length.
[0020] In one embodiment, a central opening is formed in the center of the lower case, and the disk portion can receive external driving force through the central opening.
[0021] In one embodiment, it may further include lower and upper O-rings that are respectively coupled to the lower and upper cases, seal the storage space, and guide the rotation of the disk portion.
[0022] In one embodiment, an outer O-ring may be further included, which is provided in the storage space with a radius larger than the radius of each of the lower and upper O-rings, and has an opening formed toward the rotary valve part. Effects of the invention
[0023] According to embodiments of the present invention, since the inflow and outflow of fluid into and out of the storage space can be controlled by rotating a single disc part, high-speed injection and suction of the fluid can be achieved through high-speed rotation of the disc part.
[0024] In addition, since it is sufficient to install only a rotational drive structure of a single disk section, the design and manufacturing of the cartridge for the cylinder pump can be relatively easy.
[0025] That is, a rotary valve part is rotatably provided on an opening that opens the storage space, and the rotary valve part is designed to enable rotation through a ball part connected to the disc part, so that the opening or closing of the storage space can be achieved through the rotation of the rotary valve part. At this time, the opening is divided into an inlet part into which the fluid flows in and an outlet part into which the fluid flows out, so that the inlet part and the outlet part can be selectively opened or closed depending on the rotation of the rotary valve part. Through this, the inflow and outflow of the fluid are controlled through the rotation of the rotary valve part, and since the rotation of the rotary valve part is controlled through a single disc part, high-speed control and high-speed control of the inflow and outflow of fluid through this can be achieved.
[0026] At this time, the rotary valve part includes a plurality of wings that form an insertion space between each other, and through the operation of inserting or releasing the ball part into the insertion space, the rotary valve part can be induced to rotate according to the operation of the ball part. Accordingly, through the rotation of the ball part integrally with the disk part, easy rotation of the rotary valve part can be induced regardless of the direction of rotation.
[0027] In particular, the rotary valve portion is formed such that one side has a horizontal plane and the other side has an inner surface with a curvature identical to that of the ball portion, and is formed in an overall hook shape. As it rotates on the opening, it can effectively implement opening and closing operations such as selectively opening both the outlet portion and the inlet portion, closing both, or opening only one of them.
[0028] In addition, the ball portion is connected to the disk portion through a pin portion, and by optimally designing the length of the pin portion, the ball portion can be accurately inserted into the insertion space regardless of the gap between the disk portion and the rotary valve portion.
[0029] Furthermore, O-rings are installed inside the lower and upper cases to guide the fixation and rotation of the disk portion and to seal the storage space, thereby preventing leakage of fluid entering the storage space and guiding the rotational movement of the disk portion with stable and high reliability. Brief explanation of the drawing
[0030] FIG. 1 is a perspective view illustrating a cartridge for a cylinder pump according to one embodiment of the present invention. Figure 2 is an exploded perspective view showing the cartridge of Figure 1 disassembled. FIG. 3 is an exploded perspective view illustrating the combined state of the disc part, pin part, ball part and rotary valve part of FIG. 2. FIG. 4 is a plan view illustrating the combined state of the disc part, pin part, ball part and rotary valve part of FIG. 3. FIGS. 5a to 5d are operation diagrams illustrating the inflow and outflow states of a drug using the cartridge of FIG. 1. Specific details for implementing the invention
[0031] The present invention is susceptible to various modifications and may take various forms, and embodiments are to be described in detail in the text. However, this is not intended to limit the invention to the specific disclosed forms, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each figure. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms.
[0032] The above terms are used solely for the purpose of distinguishing one component from another. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "consisting of" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.
[0033] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings.
[0034] FIG. 1 is a perspective view illustrating a cartridge for a cylinder pump according to one embodiment of the present invention. FIG. 2 is an exploded perspective view illustrating the cartridge of FIG. 1 disassembled.
[0035] Referring to FIGS. 1 and 2, the cartridge for a cylinder pump (10, hereinafter referred to as cartridge) according to the present embodiment includes a lower case (100), an upper case (200), an inlet connector (250), an outlet connector (260), a lower O-ring (300), an upper O-ring (400), an outer O-ring (500), a disc part (600), a pin part (650), a ball part (660), and a rotary valve part (700).
[0036] The lower case (100) forms the outer frame of the lower part of the cartridge (10) and has a circular frame shape that forms a predetermined lower storage space (101) inside, as illustrated. That is, when viewed from a flat plane, the lower case (100) has a circular frame shape, but it may have a concave three-dimensional shape to form the lower storage space (101).
[0037] At this time, a lower extension (110) is formed to extend on one side of the lower case (100), for example, in the direction facing upward in the drawing, and the lower extension (110) also forms a lower opening (111) as a predetermined storage space inside.
[0038] The lower extension (110) generally has a semicircular frame shape when viewed from a flat plane, but may have a concave three-dimensional shape like the lower case (100) to form the lower opening (111). Accordingly, the lower case (100) and the lower extension (110) have an overall shape like the number '8' and form the lower frame of the cartridge (10).
[0039] As illustrated, a plurality of lower fixing parts (120) may protrude from the inner surface of the lower case (100) at a distance from each other. Additionally, the center of the lower case (100) forms an open central opening (130), and a driving part that provides driving force to the disk part (600), which will be described later, is connected through the central opening (130).
[0040] At this time, the drive unit, although not shown, provides rotational driving force such as a motor, and the drive shaft can be extended through the central opening (130) and connected to the disk unit (600). Thus, the disk unit (600) rotates by the rotational driving force of the drive unit.
[0041] Additionally, a lower insertion part (140) is formed at the connection portion between the lower case (100) and the lower extension part (110). The lower insertion part (140) may have a structure such as a bar that extends a predetermined length in one direction (X) as illustrated. Accordingly, the lower insertion part (140), together with the upper insertion part (240) described later, performs the function of fixing the central axis (701) of the rotary valve part (700). This will be described later.
[0042] The upper case (200) is positioned to face the lower case (100) and its corners are joined to the lower case (100) to form a storage space (101, 201) in which the disk portion (600) is stored. To this end, the upper case (200) may have a structure that is substantially identical to and symmetrical to the lower case (100).
[0043] That is, the upper case (200) forms the upper outer frame of the cartridge (10) and, as illustrated, has a circular frame shape that forms a predetermined upper storage space (201) inside, thereby forming a storage space in which the disk portion (600) is stored together with the lower storage space (101).
[0044] At this time, the upper extension (210) is formed to extend on one side of the upper case (200), for example, in a direction facing upward in the drawing, and the upper extension (210) also has an upper opening (211) formed inside as a predetermined storage space. That is, the upper opening (211) also forms an opening where the rotary valve part (700) is located, together with the lower opening (111) described above.
[0045] Accordingly, the upper extension (210) also has a semicircular frame shape when viewed from a flat plane overall, but can have a concave three-dimensional shape like the upper case (200) to form the upper opening (211). Accordingly, the upper case (200) and the upper extension (210) also have an overall shape like an '8' and form the upper frame of the cartridge (10).
[0046] On the inner surface of the upper case (200), a plurality of upper fixing parts (220) may protrude from the inner surface at a distance from each other. Additionally, an upper insertion part (240) is formed at the connection portion between the upper case (200) and the upper extension part (210), and the upper insertion part (240) may also have a structure such as a bar that extends a predetermined length in one direction (X). Accordingly, as previously described, the central axis (701) of the rotary valve part (700) is fixed through the upper insertion part (240) and the lower insertion part (140).
[0047] The above-mentioned inlet connector (250) is connected to the outer surface of the upper case (200), and is connected to one side of the part where the upper extension (210) and the upper case (200) are connected, in a direction facing the outer surface of the upper case (200).
[0048] Similarly, the outflow connector (260) is also connected to the outer surface of the upper case (200), and is connected to the other side of the part where the upper extension (210) and the upper case (200) are connected, that is, in a direction facing the outer surface of the upper case (200) so as to be spaced apart from the inflow connector (250) by a predetermined distance.
[0049] At this time, the inlet connector (250) is connected to be open with the opening (111, 211) and is connected to be open with the inlet portion (112, see FIG. 4) formed on one side of the opening (111, 211). In contrast, the outlet connector (260) is connected to be open with the opening (111, 211) and is connected to be open with the outlet portion (113, see FIG. 5) formed on the other side of the opening (111, 211).
[0050] Meanwhile, the inlet connector (250) is a connector that provides fluid provided from the outside to the storage space (101, 201), and the outlet connector (260) is a connector that provides fluid stored in the storage space (101, 201) to the outside.
[0051] Thus, as described below, when the rotary valve part (700) rotates and the inlet part (112) is opened, the external fluid provided through the inlet connector (250) can be supplied into the interior of the storage space (101, 201) through the inlet part (112). On the other hand, when the rotary valve part (700) rotates and the outlet part (113) is opened, the fluid stored in the storage space (101, 201) can be supplied to the outside through the outlet connector (260).
[0052] As described above, the inlet and outlet connectors (250, 260) are connected to the outside to introduce and discharge fluid, and the external conduit or separate storage unit to which the inlet and outlet connectors (250, 260) are connected has been omitted in the drawing. However, the cartridge (10) according to the present embodiment can be used in a cylinder pump, etc. In the case of the cylinder pump, a separate supply unit may be provided to supply fluid such as drug to the inlet connector (250), and a separate injection member, etc. may be provided for the drug provided through the outlet connector (260) to be injected into the user.
[0053] The lower O-ring (300) is fixed to the lower storage space (101) formed by the lower case (100), and as illustrated, has an opening (301) formed in the center and has a circular ring shape overall.
[0054] At this time, a plurality of protrusions (320) are formed on the lower O-ring (300) at a predetermined interval, and the protrusions (320) are inserted and fixed between a plurality of lower fixing parts (120) formed on the inner surface of the lower case (100). That is, through the protrusions (320) and the lower fixing parts (120), the lower O-ring (300) can effectively seal the lower storage space (101) along the circumference of the inner surface of the lower case (100).
[0055] That is, the lower O-ring (300) seals the lower portion (620, see FIG. 3) of the disk portion (600) described later and the inner surface of the lower case (100). To this end, the lower O-ring (300) may include a material such as rubber.
[0056] As previously explained, the lower storage space (101) is a space where fluid introduced from the outside is stored, so the fluid must not leak into any other space other than the opening (111). Therefore, the space between the disk part (600) and the lower storage space (101) must be effectively sealed through the lower O-ring (300) as described above.
[0057] The upper O-ring (400) has substantially the same shape as the lower O-ring (300) described above and is arranged symmetrically with respect to each other.
[0058] That is, the upper O-ring (400) is fixed to the upper storage space (201) formed by the upper case (200), and as illustrated, has an opening (401) formed in the center and has a circular ring shape overall.
[0059] At this time, a plurality of protrusions (420) are formed on the upper O-ring (400) at a predetermined interval, and the protrusions (420) are inserted and fixed between a plurality of upper fixing parts (220) formed on the inner surface of the upper case (200). That is, through the protrusions (420) and the upper fixing parts (220), the upper O-ring (400) can effectively seal the upper storage space (201) along the circumference of the inner surface of the upper case (200).
[0060] That is, the upper O-ring (400) seals the upper portion (610, see FIG. 3) of the disk portion (600) described later and the inner surface of the upper case (100). To this end, the upper O-ring (400) may include a material such as rubber.
[0061] As previously explained, the upper storage space (201) is a space where fluid introduced from the outside is stored, so the fluid must not leak into any other space other than the opening (111). Therefore, the space between the disk part (600) and the upper storage space (201) must be effectively sealed through the upper O-ring (400) as described above.
[0062] As described above, the space between the lower part (620) of the disk part (600) and the lower case (100) is sealed through the lower O-ring (300), and the space between the upper part (610) of the disk part (600) and the upper case (200) is sealed through the upper O-ring (400).
[0063] At this time, as shown in FIG. 3, the disk portion (600) has a concave structure in which the central portion (630) is indented, so the outer O-ring (500) is additionally provided to seal this concave structure.
[0064] That is, the outer O-ring (500) has a circular ring shape with an opening (501) formed in the center to cover the outer surface of the central part (630) of the disk part (600). At this time, the inner surface of the outer O-ring (500) in the radial direction (R) contacts the outer surface of the central part (630), and the outer surface contacts the inner surface along the corners of the lower and upper cases (100, 200). Accordingly, the outer O-ring (500) may have a radius larger than the radius of the lower O-ring (300) and the upper O-ring (400).
[0065] At this time, the outer O-ring (500) has certain outer O-ring protrusions (520) formed along one direction (X) as illustrated, and the protrusions (520) can be combined with certain indentations formed on the inner surface of the lower case (100) and the inner surface of the upper case (200).
[0066] Meanwhile, as shown in the drawing, the outer O-ring (500) has one side open in the upward direction to form a one-side opening (502). The one-side opening (502) is a space where the rotary valve part (700), which will be described later, is located. By forming the one-side opening (502), interference with the rotary valve part (700) can be minimized, and at the same time, the opening (111, 211), which is the space where the rotary valve part (700) is provided, can be kept in an open state.
[0067] As described above, the outer O-ring (500) seals the space between the outer surface of the disk portion (600) and the storage space (101, 201), while keeping the opening (111, 211) open, thereby minimizing leakage of the fluid into the space outside the opening (111, 211).
[0068] The specific structure and coupling relationship of the above-mentioned disk part (600), pin part (650), ball part (660), and rotary valve part (700) will be explained with further reference to the drawings described later.
[0069] FIG. 3 is an exploded perspective view illustrating the combined state of the disc part, pin part, ball part and rotary valve part of FIG. 2.
[0070] Referring to FIGS. 1 to 3, the disk portion (600) has an overall circular cylinder shape and includes a central portion (630) that extends a predetermined length in one direction (X), and upper portions (610) and lower portions (620) formed on both sides of the central portion (630).
[0071] At this time, a plurality of protrusions are formed on the upper part (610) to form the upper protrusion (615), and although not shown in the drawing, protrusions substantially identical to the upper protrusion (615) are symmetrically formed on the lower part (620).
[0072] The upper protrusion (615) penetrates the opening (401) of the upper O-ring (400) described above and is coupled to the inner surface of the upper case (200), and a recessed structure corresponding to the upper protrusion (615) can be formed on the inner surface of the upper case (200).
[0073] Likewise, the lower protrusion penetrates the opening (301) of the lower O-ring (300) and is coupled to the inner surface of the lower case (100), and a recessed structure corresponding to the lower protrusion can be formed on the inner surface of the lower case (100) as well.
[0074] Meanwhile, as previously explained, the disk portion (600) may have its center connected to a drive shaft extending through the central opening (130) of the lower case (100), and the disk portion (600) rotates clockwise or counterclockwise with the one direction (X) as the center of rotation by means of the rotational driving force transmitted to the drive shaft.
[0075] Considering the operation of the above-mentioned disk portion (600), the disk portion (600) must be rotatable even when the upper and lower protrusions are coupled to the inner surfaces of the upper and lower cases (200, 100). Therefore, when the disk portion (600) rotates, the rotation of the disk portion (600) can be guided through the coupling between the upper and lower protrusions and the upper and lower cases. Accordingly, the upper and lower protrusions must be rotatably coupled to the inner surfaces of the upper and lower cases.
[0076] Additionally, in the case of the central portion (630), the outer O-ring (500) described above may be coupled along the outer surface of the central portion (630). In the central portion (630), a predetermined groove (635) is formed in the direction of the one-sided opening (502) where one side of the outer O-ring (500) is opened.
[0077] The groove (635) is formed along the radial direction (R), and one end of the pin (650) is inserted and fixed into the groove (635). At this time, the depth of the groove (635) and the insertion length of the pin (650) are sufficient as long as they allow the pin (650) to be stably fixed, and the method of fixing the pin (650) is not limited.
[0078] As illustrated, the ball portion (660) has a spherical shape with a predetermined radius, and the other end of the pin portion (650) is inserted into and fixed to the ball portion (660). To this end, a predetermined groove must also be formed on the inner side of the ball portion (660), and the depth of the groove formed in the ball portion (660) and the insertion length of the pin portion (650) are sufficient as long as they can stably fix the ball portion (660), and the fixing method is not limited.
[0079] As described above, the ball portion (660) is integrally fixed to one side of the disk portion (600) through the pin portion (650), and when the disk portion (600) rotates around a central axis, the pin portion (650) as well as the ball portion (660) rotate together.
[0080] The rotary valve section (700) is positioned on the lower opening (111) and upper opening (211) described above and controls the opening and closing of the openings (111, 211).
[0081] At this time, the rotary valve part (700) has a shape similar to a propeller overall and includes a central shaft (701) formed in the center and a plurality of blades (710, 720, 730, 740) extending outward from the central shaft (701).
[0082] The central shaft (701) is fixed to the lower insertion part (140) and the upper insertion part (240) so that both sides can rotate, and thus the central shaft (701) is always located in the same position.
[0083] Each of the above wings (710, 720, 730, 740) has the same shape as one another, and as illustrated, can extend outwardly from the central axis (701) in a hook-like shape.
[0084] Specifically, as illustrated, the first wing (710) is composed of a first horizontal plane (712) extending outwardly from the central axis (701) to form a plane, a first inner surface (713) extending outwardly from the central axis (701) to form a curved surface having a predetermined curvature, and a first outer surface (711) connecting the horizontal plane (712) and the inner surface (713) to each other and forming the outer surface of the first wing (710).
[0085] Likewise, the second wing (720) is composed of a second horizontal plane (722), a second inner surface (723), and a second outer surface (721) having the same structure as the first wing (710). At this time, the second wing (720) is positioned at an angle of 90 degrees from the first wing (710). Furthermore, the third and fourth wings (730, 740) also all have the same shape as the first wing (710), and each is positioned at an angle of 90 degrees from each other.
[0086] Furthermore, a first insertion space (715) is formed between the fourth and first wings (740, 710), a second insertion space (725) is formed between the first and second wings (710, 720), a third insertion space (735) is formed between the second and third wings (720, 730), and a fourth insertion space (745) is formed between the third and fourth wings (730, 740).
[0087] Thus, the ball portion (660) can be inserted and positioned in any one of the first to fourth insertion spaces (715, 725, 735, 745), and in the process of the ball portion (660) being inserted into the interior of the insertion spaces (715, 725, 735, 745) and then removed from the interior to the exterior, the rotary valve portion (700) performs rotation around the central axis (701).
[0088] In addition, in order for the ball portion (660) to be stably inserted into the insertion spaces (715, 725, 735, 745) to induce rotation of the rotary valve portion (700), the curvature of the inner circumferences described above must be formed with the same curvature as the curvature of the ball portion (660).
[0089] At this time, since the ball portion (660) has a spherical shape in three dimensions, the inner surfaces must also be formed as inner surfaces of a three-dimensional spherical shape having the same curvature so as to cover a part of the outer surface of the spherical shape of the ball portion (660). Of course, each of the inner surfaces is sufficient if it is formed as an inner surface shape having the same curvature as a part of the outer surface of the ball portion (660), so that it covers only a part of the outer surface of the ball portion (660).
[0090] As described above, each of the first to fourth inner surfaces (713, 723) is formed as a curved surface having the same curvature as the outer surface of the ball portion (660), so that when the ball portion (660) is positioned inside the insertion spaces (715, 725, 735, 745), the outer surface and the inner surface are positioned to come into contact with each other as shown in FIG. 4.
[0091] Meanwhile, the first to fourth outer surfaces (711, 721) of the first to fourth wings (710, 720, 730, 740) must be formed to have a predetermined curved shape, because the surface (102, 103) forming the opening (111, 211) is a curved surface. That is, as shown in FIG. 4, the space where the opening (111, 211) is formed must be sealed by the outer surfaces of the first to fourth wings (710, 720, 730, 740), and for more precise sealing of the opening (111, 211), the outer surfaces (711, 721) must also be formed with the same curvature as the inner surface (102, 103) where the opening (111, 211) is formed.
[0092] The opening and closing operations between the wings and the opening are described in more detail with reference to the drawings described later.
[0093] FIG. 4 is a plan view illustrating the combined state of the disc part, pin part, ball part and rotary valve part of FIG. 3.
[0094] Referring to FIG. 4, the disk portion (600) is stored in an internal storage space (201, 101) formed by the upper and lower cases (200, 100), and the center of the disk portion (600) is connected to a drive shaft that extends through the central opening (130), although it is not shown.
[0095] At this time, the lower and upper cases (100, 200) have openings (111, 211) formed in one direction as in FIG. 2, and the rotary valve part (700) is located in the space where the openings (111, 211) are formed as described above. The rotary valve part (700) is fixed so that it can rotate, with the central axis (701) inserted into the lower and upper insert parts (140, 240).
[0096] Thus, the rotary valve part (700) rotates around the central axis (701), and the space formed by the opening (111, since only the lower case is shown in FIG. 4, the lower opening is described as the opening below) is opened or closed outward.
[0097] At this time, as previously explained, the first and second contact surfaces (102, 103) of the lower case (100) that are spaced apart from each other and form the opening (111) may be formed as curved surfaces having a predetermined curvature as illustrated. Additionally, in the first to fourth wings (710, 720, 730, 740) included in the rotary valve part (700), the first to fourth outer surfaces are formed as curved surfaces having substantially the same curvature as the first and second contact surfaces (102, 103).
[0098] Thus, when the rotary valve part (700) rotates around the central axis (701), the first to fourth outer surfaces come into contact with the first and second contact surfaces (102, 103) and open or close the opening (111). At this time, if the opening (111) is defined with one side as the inlet (112) and the other side as the outlet (113) around the central axis (701), then the inlet (112) and the outlet (113) can be selectively opened or closed as the rotary valve part (700) rotates around the central axis (701).
[0099] Here, the inlet section (112) is connected to the preceding inlet connector (250) so as to be open, allowing fluid supplied through the inlet connector (250) to flow into the storage space (101) through the inlet section (112). Additionally, the outlet section (113) is connected to the preceding outlet connector (260) so as to be open, allowing fluid stored in the storage space (101) to flow out to the outside through the outlet connector (260) via the outlet section (113).
[0100] Additionally, the pin portion (650) and the ball portion (660) are connected to one side of the disk portion (600), and the ball portion (660) can be selectively inserted into a plurality of insertion spaces (715, 725, 735, 745) formed by the rotary valve portion (700). That is, when the disk portion (600) receives rotational driving force from the outside and rotates around the central axis (C), the ball portion (660) rotates integrally with the disk portion (600), and the ball portion (660) repeatedly inserts into and exits the insertion spaces (715, 725, 735, 745), which are the spaces between the wings of the rotary valve portion (700). Thus, the rotary valve section (700) rotates around the central axis (701), and consequently, the inlet section (112) and the outlet section (113) are selectively opened or closed.
[0101] The flow of the fluid through the selective or sequential opening or closing of the inlet (112) and the outlet (113) is described as follows.
[0102] FIGS. 5a to 5d are operation diagrams illustrating the inflow and outflow states of a drug using the cartridge of FIG. 1.
[0103] First, referring to FIG. 5a, assuming that the initial state is one in which both the inlet (112) and the outlet (113) are sealed, in the initial state, the ball portion (660) is located on one side of the rotary valve portion (700).
[0104] That is, in the initial state, the rotary valve section (700) maintains a state in which the second wing (720) is in contact with the first contact surface (102) to seal the inlet section (112) and the fourth wing (740) is in contact with the second contact surface (103) to seal the outlet section (113). At this time, the ball section (660) is located at the outer edge of the third insertion space (735) of the rotary valve section (700) and is not inserted into the insertion space of the rotary valve section (700).
[0105] In this initial state, fluid from the outside is blocked from flowing into the storage space (101) through the inlet (112), and likewise, even when fluid is stored in the storage space (101), fluid is blocked from flowing out of the storage space (101) through the outlet (113).
[0106] Afterwards, referring to FIG. 5b, when the disk portion (600) rotates clockwise, the ball portion (660) connected to one side of the disk portion (600) also rotates clockwise along the inner arc of the lower case (100).
[0107] In this way, when the ball portion (660) rotates clockwise, the ball portion (660) is inserted into the inner side of the third insertion space (735). Furthermore, when the disk portion (600) additionally rotates clockwise, the ball portion (660) also rotates clockwise while inserted into the third insertion space (735), and accordingly, the rotation valve portion (700) rotates counterclockwise around the central axis (701).
[0108] As described above, when the rotary valve part (700) rotates counterclockwise around the central axis (701), the second wing (720) that was in contact with the first contact surface (102) moves from the first contact surface (102) to the inside of the storage space (101), and the inlet part (112) is opened as shown in the illustration.
[0109] Accordingly, fluid is introduced from the outside through the inlet (112) in the direction indicated by the arrow and stored in the storage space (101).
[0110] Meanwhile, even when the inlet (112) is opened according to the rotation of the rotary valve part (700), as shown in FIG. 5b, the fourth wing (740) can still maintain contact with the second contact surface (103) due to the shape features of the fourth wing (740) included in the rotary valve part (700), and thus the outlet (113) remains sealed.
[0111] That is, the fluid introduced from the outside through the inlet (112) is stored only inside the storage space (101), and is blocked from flowing out to the outside through the outlet (113).
[0112] Afterwards, referring to FIG. 5c, when the disk portion (600) is further rotated clockwise, the ball portion (660) connected to one side of the disk portion (600) also rotates further clockwise along the inner arc of the lower case (100).
[0113] In this way, when the ball portion (660) is additionally rotated clockwise, the ball portion (660) is additionally rotated while inserted into the inner side of the third insertion space (735), and accordingly, the rotation valve portion (700) is additionally rotated counterclockwise around the central axis (701).
[0114] As described above, when the rotary valve part (700) is further rotated counterclockwise around the central axis (701), the fourth wing (740) that was in contact with the second contact surface (103) moves from the second contact surface (103) to the outside of the storage space (101), and the outflow part (113) is opened as shown in the illustration.
[0115] Accordingly, the fluid stored in the storage space (101) is discharged to the outside through the outlet (113) in the direction indicated by the arrow.
[0116] Meanwhile, when the outlet (113) is opened due to additional rotation of the rotary valve part (700), as shown in FIG. 5c, the first wing (710) begins to come into contact with the first contact surface (102) due to the shape features of the first wing (710) included in the rotary valve part (700), and the inlet part (112) is maintained in a sealed state again.
[0117] That is, the fluid stored inside the storage space (101) is provided to the outside through the outlet (113), and the inflow of fluid from the outside through the inflow (112) is blocked.
[0118] Of course, when the rotary valve section (700) is located between the positions described in FIG. 5b and FIG. 5c, the inlet section (112) is opened so that fluid can flow in from the outside, and at the same time, the outlet section (113) is sealed so that fluid can flow out to the outside. However, in order to prevent such simultaneous flow of fluid and flow, it is obvious that the shape of the blades of the rotary valve section (700) can be optimized and designed so that as the blades rotate, they must come into contact with either of the first and second contact surfaces (102, 103) and either of the inlet section (112) or the outlet section (113) must be sealed.
[0119] Furthermore, referring to FIG. 5d, when the disk portion (600) is rotated further in a clockwise direction, the ball portion (660) connected to one side of the disk portion (600) also rotates further in a clockwise direction along the inner arc of the lower case (100).
[0120] In this way, when the ball portion (660) is further rotated clockwise, the ball portion (660) is disengaged from being inserted inside the third insertion space (735) to the outside of the third insertion space (735), and accordingly, the rotary valve portion (700) is further rotated counterclockwise around the central axis (701).
[0121] As described above, when the rotary valve part (700) is further rotated counterclockwise around the central axis (701), the first wing (710) that was in contact with the first contact surface (102) still maintains contact with the first contact surface (102), and the third wing (730) additionally comes into contact with the second contact surface (103).
[0122] Thus, similar to the initial state of FIG. 5a, the inlet section (112) is sealed with the first wing (710) in contact with the first contact surface (102), and the outlet section (113) is sealed with the third wing (730) in contact with the second contact surface (103). At this time, the ball section (660) is located at the outer edge of the third insertion space (735) of the rotary valve section (700) and is not inserted into the insertion space of the rotary valve section (700). Here, the ball section (660) in FIG. 5d is located on the opposite side from the ball section (660) in FIG. 5a, that is, on the opposite side relative to the rotary valve section (700).
[0123] Ultimately, although the position of the ball portion (660) is opposite to the initial state in Fig. 5a, as a result, fluid is blocked from flowing into the storage space (101) from the outside through the inlet portion (112) in the same manner as the fluid flow state in the initial state, and similarly, even when there is fluid stored in the storage space (101), the fluid is blocked from flowing out of the storage space (101) through the outlet portion (113).
[0124] As described above, through one cycle of FIGS. 5a to 5d, the fluid is introduced from the outside into the storage space (101) through the inlet (112) and stored, and then provided from the storage space (101) to the outside through the outlet (113). Thus, if the fluid is a drug, storage into the storage space (101) and injection into the user are performed.
[0125] Furthermore, in one cycle of FIGS. 5a to 5d, by adjusting the stopping time at each position of the rotary valve part (700), the amount of fluid stored in the storage space (101) and the amount of fluid provided to the outside from the storage space (101) can be controlled. Through this, the dosage of the drug to be injected into the user can be varied.
[0126] In addition, since the dosage of the drug as described above can be controlled by a rotational drive that rotates the disk portion (600) around the center (C), more rapid and effective dosage control is possible.
[0127] Meanwhile, although the above description explains how the fluid flow is controlled as the disk portion (600) rotates clockwise in the order of FIGS. 5a to 5d, it is obvious that the same fluid flow can be controlled even when the disk portion (600) rotates counterclockwise in the opposite order, that is, in the order of FIGS. 5d to 5a.
[0128] Thus, by controlling the above-mentioned disk portion (600) to rotate selectively in a clockwise or counterclockwise direction, it becomes possible to quickly provide the necessary drug to the user in an optimal dosage.
[0129] According to the embodiments of the present invention as described above, since the inflow and outflow of fluid into and out of the storage space can be controlled by rotating a single disk part, high-speed injection and suction of the fluid can be achieved through high-speed rotation of the disk part.
[0130] In addition, since it is sufficient to install only a rotational drive structure of a single disk section, the design and manufacturing of the cartridge for the cylinder pump can be relatively easy.
[0131] That is, a rotary valve part is rotatably provided on an opening that opens the storage space, and the rotary valve part is designed to enable rotation through a ball part connected to the disc part, so that the opening or closing of the storage space can be achieved through the rotation of the rotary valve part. At this time, the opening is divided into an inlet part into which the fluid flows in and an outlet part into which the fluid flows out, so that the inlet part and the outlet part can be selectively opened or closed depending on the rotation of the rotary valve part. Through this, the inflow and outflow of the fluid are controlled through the rotation of the rotary valve part, and since the rotation of the rotary valve part is controlled through a single disc part, high-speed control and high-speed control of the inflow and outflow of fluid through this can be achieved.
[0132] At this time, the rotary valve part includes a plurality of wings that form an insertion space between each other, and through the operation of inserting or releasing the ball part into the insertion space, the rotary valve part can be induced to rotate according to the operation of the ball part. Accordingly, through the rotation of the ball part integrally with the disk part, easy rotation of the rotary valve part can be induced regardless of the direction of rotation.
[0133] In particular, the rotary valve portion is formed such that one side has a horizontal plane and the other side has an inner surface with a curvature identical to that of the ball portion, and is formed in an overall hook shape. As it rotates on the opening, it can effectively implement opening and closing operations such as selectively opening both the outlet portion and the inlet portion, closing both, or opening only one of them.
[0134] In addition, the ball portion is connected to the disk portion through a pin portion, and by optimally designing the length of the pin portion, the ball portion can be accurately inserted into the insertion space regardless of the gap between the disk portion and the rotary valve portion.
[0135] Furthermore, O-rings are installed inside the lower and upper cases to guide the fixation and rotation of the disk portion and to seal the storage space, thereby preventing leakage of fluid entering the storage space and guiding the rotational movement of the disk portion with stable and high reliability.
[0136] Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as set forth in the following claims. Explanation of the symbols
[0137] 10: Cartridge for cylinder pump 100 : Lower case 110: Lower extension 111: Lower extension storage compartment 112 : Inlet 113 : Outlet 140 : Lower insert 200 : Upper case 210: Upper extension 300 : Lower O-ring 320: Lower O-ring protrusion 400: Upper O-ring 420: Upper O-ring protrusion 500 : Outer O-ring 520: Outer O-ring protrusion 600 : Disk section 630 : Central 635 : Homebu 650 : Pin part 660 : Ball 700: Rotary valve section 710, 720, 730, 740 : Wings 715, 725, 735, 745 : Insertion space
Claims
Claim 1 A cartridge for a cylinder pump comprising: lower and upper cases joined together to form a storage space; a disc portion stored in the storage space and rotated by an external driving force; a ball portion connected to one side of the disc portion and rotating integrally with the disc portion; and a rotary valve portion provided on one side of the lower and upper cases, coupled to and released from the ball portion, and rotated to introduce or discharge fluid into or out of the storage space. Claim 2 A cartridge for a cylinder pump according to claim 1, characterized in that an opening for opening the storage space is formed on one side of the lower and upper cases, and the rotary valve part rotates on the opening. Claim 3 A cartridge for a cylinder pump according to paragraph 2, wherein the rotary valve portion comprises: a central shaft rotatably fixed to the lower and upper cases; and a plurality of blades extending from the central shaft. Claim 4 A cartridge for a cylinder pump, characterized in that, in paragraph 3, an insertion space into which the ball portion is inserted is formed between the adjacent wings. Claim 5 A cartridge for a cylinder pump according to claim 4, characterized in that as the disc portion rotates, the ball portion is inserted into the insertion space and then detaches from the insertion space, and the rotary valve portion rotates on the opening. Claim 6 A cartridge for a cylinder pump according to claim 4, wherein each of the wings comprises: a horizontal plane extending outwardly in a plane from the central axis; an inner surface extending outwardly from the central axis having the same curvature as the outer surface of the ball portion; and an outer surface formed as a curved surface connecting the horizontal plane and the inner surface. Claim 7 A cartridge for a cylinder pump according to claim 6, characterized in that as the rotary valve part rotates, the outer surface opens or closes the opening. Claim 8 A cartridge for a cylinder pump according to claim 7, wherein the opening is formed with an inlet on one side for the fluid to flow in and an outlet on the other side for the fluid to flow out, centered on the central axis, and the outer surface is characterized by opening or closing at least one of the inlet and the outlet. Claim 9 A cartridge for a cylinder pump according to claim 8, further comprising: an inlet connector connected to be open to the inlet and extending to the outside of the upper case; and an outlet connector connected to be open to the outlet and extending to the outside of the upper case. Claim 10 A cartridge for a cylinder pump according to claim 1, characterized in that the disk portion rotates clockwise or counterclockwise. Claim 11 A cartridge for a cylinder pump according to claim 1, further comprising a pin portion that is inserted into a groove formed in the disk portion and fixed to the ball portion, and extends for a predetermined length. Claim 12 A cartridge for a cylinder pump according to claim 1, characterized in that a central opening is formed in the center of the lower case, and the disk portion receives external driving force through the central opening. Claim 13 A cartridge for a cylinder pump according to claim 1, further comprising lower and upper O-rings that are respectively coupled to the lower and upper cases, seal the storage space, and guide the rotation of the disk portion. Claim 14 A cartridge for a cylinder pump according to claim 13, further comprising an outer O-ring provided in the storage space with a radius larger than the radius of each of the lower and upper O-rings, and having an opening formed toward the rotary valve part.