A container for accommodating a liquid reservoir and an injection system

Abstract

The present invention relates to a storage box and injection system for accommodating a liquid reservoir. The storage box includes a shell, a driving wheel group, and a medicine delivery position. The shell is provided with a driving port. The driving wheel group is accommodated in the shell and includes a plurality of storage positions arranged around a first rotating shaft. The storage positions are used to load the liquid reservoir, and the storage positions can rotate relative to the first rotating shaft. The medicine delivery position is aligned with the driving port, and the plurality of storage positions are located one by one at the medicine delivery position when the storage positions rotate relative to the first rotating shaft. The storage box of the present invention is convenient to use and easy to operate, and can realize continuous injection of multiple liquid reservoirs. It is also compact and easy to carry.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a containing box for containing a liquid reservoir and an injection system. Background Art

[0002] Liquid reservoirs are one of the most commonly used supplies in the medical field. Their main function is to store liquid medicines. Liquid reservoirs are widely used to treat diseases such as diabetes and hypogonadotropic hypogonadism. Currently, existing liquid reservoirs are cylindrical in shape, such as syringes, medicine bottles, etc., which are fragile and difficult to store for a long time.

[0003] In addition, the existing reservoirs are not convenient enough to use. The capacity of a single reservoir may not be exactly consistent with the dose required by the patient. In other words, there are cases where the patient's single dose is greater or less than the capacity of a single reservoir. If the patient's single dose is greater than the capacity of a single reservoir, it is necessary to continuously inject the liquid in multiple reservoirs; if the patient's single dose is less than the capacity of a single reservoir, it is necessary to accurately control the injection volume of the reservoir.

[0004] Therefore, a container is needed that can meet the above requirements, and can both store drugs safely and achieve continuous drug administration. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a container box and an injection system for accommodating a liquid reservoir, so as to solve one or more problems in the prior art.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A container for accommodating a liquid storage device comprises a housing, a driving wheel set and a medicine delivery position.

[0008] The housing is provided with a driving port;

[0009] The driving wheel assembly is contained in the housing and comprises a plurality of storage positions arranged around the first rotating shaft, the storage positions are used to load the liquid reservoir, and the storage positions can rotate relative to the first rotating shaft;

[0010] The medicine delivery position is aligned with the driving port, and the plurality of storage positions are located at the medicine delivery position one by one when the plurality of storage positions rotate relative to the first rotating shaft.

[0011] Preferably, the driving wheel assembly includes a plurality of driving wheel bodies, and the plurality of driving wheel bodies extend radially outward around the first rotating shaft, and the storage position is formed between two adjacent driving wheel bodies.

[0012] Preferably, the driving wheel assembly comprises a driving wheel body rotatably connected to the housing, and a connecting port provided on the driving wheel body, wherein the connecting port is used to drive the driving wheel body to rotate.

[0013] Preferably, a plurality of the connection ports are provided on the driving wheel body, and the plurality of the connection ports correspond one-to-one to the plurality of the storage positions.

[0014] Preferably, the connection port is a special-shaped hole, and the connection port is provided with an inclined surface having a guiding function.

[0015] Preferably, the opening direction of the connecting port is parallel to the first rotating axis.

[0016] Preferably, it further comprises a driven wheel set, which is arranged in the housing and can rotate relative to a second rotating shaft, and the second rotating shaft is parallel to the first rotating shaft.

[0017] Preferably, the driven wheel set is configured to rotate synchronously with the driving wheel set.

[0018] Preferably, the driven wheel assembly includes a plurality of driven wheel bodies extending radially outward relative to the second rotating shaft, and each of the driven wheel bodies is driven by the gravity of the liquid reservoir to passively rotate around the second rotating shaft.

[0019] Preferably, a partition is provided between the driving wheel group and the driven wheel group, and the partition divides the space between the driving wheel group and the driven wheel group in the housing into two channels in opposite directions so that the liquid reservoir can move in opposite directions on both sides of the partition.

[0020] An injection system comprises a liquid reservoir, a driving device for driving the liquid reservoir, and a accommodating box as described in any one of the above items, wherein the liquid reservoir is accommodated in the accommodating box, and the driving device drives the liquid reservoir by cooperating with the accommodating box.

[0021] Preferably, the size of the driving opening matches that of the driving device, so that the driving device can enter the driving opening.

[0022] Preferably, the driving device comprises an open groove for limiting the rotation of the driving wheel set, and the thickness of the driving wheel body matches the width of the open groove to clamp the driving wheel body.

[0023] Preferably, the driving device comprises a pawl for extending into the connecting port, and the pawl drives the driving wheel set to rotate by being plugged into at least one of the plurality of connecting ports in sequence.

[0024] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0025] (i) The storage box of the present invention utilizes a driving wheel structure, and can install multiple liquid storage containers at one time, which has the advantages of being easy to use and simple to operate.

[0026] (ii) The container box of the present invention utilizes a driving wheel and a driven wheel structure to achieve continuous injection of multiple liquid reservoirs.

[0027] (III) The housing box and the driving device of the present invention are separate structures, which are compact and easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the exploded structure of the injection system according to the first embodiment of the present invention is shown.

[0029] Figure 2A The isometric diagram of the driving device in the injection system according to the first embodiment of the present invention is shown;

[0030] Figure 2B A schematic diagram showing the internal structure of a driving device in an injection system according to a first embodiment of the present invention is shown;

[0031] Figure 3 A schematic diagram showing the internal structure of a containing box in an injection system according to a first embodiment of the present invention is shown;

[0032] Figure 4 A schematic diagram showing the positional relationship between the driving device, the containing box and the liquid reservoir according to the first embodiment of the present invention is shown;

[0033] Figure 5 A schematic diagram of the external structure of a liquid reservoir according to an embodiment of the present invention is shown;

[0034] Figure 6 Shows Figure 5 A partial enlarged schematic diagram of the middle circle A part;

[0035] Figure 7 A schematic structural diagram of a liquid reservoir including a piston assembly according to a first embodiment of the present invention is shown;

[0036] Figure 8 The figure shows an axial cross-sectional schematic diagram of a piston assembly according to the first embodiment of the present invention;

[0037] Fig. 9 The figure shows an axonometric schematic diagram of a piston assembly according to the first embodiment of the present invention;

[0038] Fig.10 A partial enlarged schematic diagram of a piston assembly according to the first embodiment of the present invention is shown;

[0039] Fig.11A A schematic diagram showing the structure of the liquid storage device and the driving device in the first state according to the first embodiment of the present invention is shown;

[0040] Fig. 11B A schematic diagram showing the structure of the liquid storage device and the driving device in the second state according to the first embodiment of the present invention is shown;

[0041] Fig. 11C A schematic diagram showing the structure of the liquid storage device and the driving device in the third state according to the first embodiment of the present invention is shown;

[0042] Fig.11D A schematic diagram showing the structure of the liquid storage device and the driving device in the fourth state according to the first embodiment of the present invention;

[0043] Fig.12 An axonometric view showing the connection between the liquid reservoir and the handle according to the second embodiment of the present invention;

[0044] Fig.13 Shows Fig.12 Schematic diagram of the structure of the handle.

[0045] Markings in the accompanying drawings: 1, joint; 2, containing box; 21, shell; 22, driving port; 23, partition; 35, driving wheel group; 350, driving wheel body; 351, connecting port; 352, driving wheel body; 354, storage position; 36, driven wheel group; 360, driven wheel body; 362, driven wheel body; 364, steering space; 4, driving device; 41, control part; 44, infusion part; 441, bead; 5, liquid reservoir; 50, liquid reservoir body; 505, first scale line; 504, current limiting part; 5041, guide groove ; 52, piston assembly; 524, injection piston; 5240, blocking body; 5242, fixed body; 5244, sealing strip; 5246, sliding strip; 525, positioning ring; 5251, positioning part; 5252, first indicator line; 5253, second indicator line; 5254, fine-tuning part; 526, adjustment ring; 5261, fixing part; 5262, fine-tuning support part; 5263, adjustment part; 5264, second scale line; 5265, adjustment groove; 6, handle; 61, gripping part; 62, docking part; 621, expansion part DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the piston assembly, the liquid reservoir including the piston assembly, the container box and the injection system proposed by the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0047] In the present invention, the direction of the driving device 4 toward the containing box 2 is set as the first direction. In other words, the direction in which the bead 441 leaves the driving device and enters the containing box 2 is the first direction; the opposite direction is the second direction.

[0048] Embodiment 1:

[0049] Please refer to Figures 1 to 5 The injection system of the present invention comprises a connector 1 connected to an external pipeline such as a Luer connector or an indwelling needle, a housing box 2 connected to the connector 1, a liquid reservoir 5 stored in the housing box 2, and a driving device 4 for pushing the liquid in the liquid reservoir 5. The driving device 4 is used to drive the liquid reservoir 5 contained in the housing box 2 so that the liquid in the liquid reservoir 5 enters the connector 1, so as to deliver the liquid from the liquid reservoir 5 into the biological body.

[0050] The driving device 4 of the injection reservoir of the present invention is installed on the containing box 2, and includes a housing 40, a control unit 41, a driving assembly 43 and an infusion unit 44. A substantially closed space is formed inside the housing 40 to accommodate the control unit 41, the driving assembly 43 and the infusion unit 44.

[0051] The specific structure of the driving device 4 has been disclosed in the applicant's patent application of the same date entitled "Driving device of injection reservoir and injection system including the driving device", and the content of the patent application is incorporated herein by reference.

[0052] In general, the present invention adopts a semi-automatic circular wheel (driving wheel group) and a push rod (second connecting rod) linkage mode, and uses beads 441 to enter the cavity 503 one by one to push the piston assembly 52 to move along the first direction. Since the specifications of the beads 441 are the same, the travel distance is the same each time, and the piston assembly 52 can be stably pushed; the pawl 4361 is used to cooperate with the connecting port 351 to realize the transmission and positioning of the liquid reservoir; the first indicator line 5252 and the second indicator line 5253 on the positioning ring 525 are used to indicate the second scale line 5264 on the adjustment ring 526 and the first scale line 505 on the cavity 503, thereby having two groups of scales to indicate the amount of liquid medicine, thereby improving the indication accuracy; the threaded connection is used to make the travel amount accurately controlled to increase the accuracy of fine-tuning. At the same time, it is convenient to carry and the dosage is adjustable. The following is a detailed description in conjunction with the accompanying drawings.

[0053] Combination Figure 1 and Figure 2A and Figure 2B, the control part 41 of the driving device 4 is pressed by the user, which drives the infusion part 44 to move, and pulls out the beads 441 one by one from the liquid reservoir 5 along the second direction; under the action of the automatic reset part 423 or manual operation, the beads 441 are pushed one by one into the liquid reservoir 5. In this embodiment, the automatic reset part 423 is an elastic body such as a spring, but this does not constitute a limitation of the present invention.

[0054] The container 2 includes a housing 21 and a driving wheel set 35 and a driven wheel set 36 contained in the housing 21. Preferably, the container 2 also includes a transparent window 210 extending along the first direction so that the operator can observe the liquid state in the liquid reservoir 5 located at the medicine delivery position 354A.

[0055] like Figure 1-3 As shown, the housing 21 is generally a closed structure, and a driving port 22 is provided on the surface facing the driving device 4, and its shape matches the output port 404 and the positioning port 405 on the driving device 4, so as to allow a part of the driving device 4 (such as the bead 441 and the pawl 4361) to enter or exit the containing box 2 from the output port 404, and also allow a part of the driving device 4 (such as the opening groove 4351 provided on the first rod 435) to enter the containing box 2 from the positioning port 405. It can be understood by those skilled in the art that the driving port 22 can be a longitudinal opening to match the output port 404 and the positioning port 405, or two independent openings to match the output port 404 and the positioning port 405 respectively.

[0056] refer to Figure 3 As shown, in this embodiment, the driving wheel set 35 and the driven wheel set 36 are provided to increase the number of liquid reservoirs 5 that can be accommodated in the accommodating box 2, thereby increasing the amount of liquid medicine in the accommodating box 2. However, it can be understood by those skilled in the art that only the driving wheel set 35 can be provided without the driven wheel set 36. This will reduce the amount of liquid medicine, but the volume is more compact.

[0057] Combination Figure 3 and Figure 4 The driving wheel assembly 35 has a first rotation axis parallel to the first direction or the second direction, and can rotate relative to the housing 21 around the first rotation axis. The driving wheel assembly 35 includes a driving wheel body 350, a connection port 351 disposed on the driving wheel body 350, and at least two driving wheel bodies 352 connected to the driving wheel body 350, wherein the driving wheel body 350 is connected to the housing 21 so as to be relatively rotatable.

[0058] In this embodiment, the driving wheel body 352 is composed of five pieces and is integrally connected to the driving wheel body 350. The driving wheel bodies 352 are evenly distributed in a radial shape to form storage positions 354 for accommodating the liquid reservoir 5 between adjacent driving wheel bodies 352. In addition, one of the storage positions 354 (the drug delivery position) is aligned with the output port 404 on the driving device 4 so that the rotation axis of the bead 441 located in the first direction is aligned with the center line of the liquid reservoir 5 accommodated in the storage position 354. In this embodiment, the drug delivery position is Figure 3 The storage position 354 at the top is selected, but this does not constitute a limitation of the present invention, and other storage positions 354 may be selected as the medicine delivery position. In addition, the thickness of the driving wheel body 352 matches the opening groove 4351 of the driving device 4, so that the opening groove 4351 of the driving device 4 can clamp one of the driving wheel bodies 352 to position the driving wheel body 352. The aforementioned medicine delivery position is the position of the storage position aligned with the driving port. In other words, when a storage position rotates relative to the first rotating shaft to a position aligned with the driving port, the storage position is located at the medicine delivery position.

[0059] The connection port 351 is used to cooperate with the pawl 4361 on the second connecting rod 316 in the driving device 4. The opening direction of the connection port 351 is parallel to the first rotating axis of the driving wheel group 35, so that when the driving wheel group 35 is driven from the connection port 351, there will be no interference with the liquid reservoir 5. In this embodiment, the connection port is a special-shaped hole other than a circular hole, and the special-shaped hole includes a guiding inclined surface 3511 (refer to Figure 3 The shape and size of the connection port 351 need to be designed in accordance with the shape and stroke of the pawl 4361 of the driving device 4, so that the pawl 4361 can enter the connection port 351 from the driving wheel body 350, and then be clamped in the connection port 351 to apply a force to the driving wheel body 350, thereby driving the driving wheel assembly 35 to rotate.

[0060] Further, the driven wheel set 36 is rotatable relative to the housing 21, and the driven wheel set 36 has a second rotation axis parallel to the first wheel axis of the driving wheel set 35. The driven wheel set 36 includes a plurality of driven wheel bodies 362, which are relatively rotatably connected to the housing 21 of the accommodating box 2. There are at least two driven wheel bodies 362, which extend radially and uniformly, and a turning space 364 for accommodating the liquid reservoir 5 is formed between adjacent driven wheel bodies 362. The turning space 364 has approximately the same size as the storage position 354, and just accommodates one liquid reservoir 5 (at this time, the center line of the liquid reservoir 5 is parallel to the first rotation axis of the driving wheel set 35 and the second rotation axis of the driven wheel set 36). Since the driving wheel set 35 applies a force to the liquid reservoir 5 when rotating (a downward force in the figure), the liquid reservoir 5 will automatically fall on the upper side of the driven wheel set 36 due to gravity. As several liquid reservoirs 5 continue to fall on the upper side of the driven wheel set, coupled with the force applied to the liquid reservoir due to the rotation of the driving wheel set 35, the driven wheel body of the driven wheel set 36 will be driven to rotate due to the large force, forcing the liquid reservoir 5 to move to the driven wheel set 36. Since the driving wheel set 35 continues to push the liquid reservoirs 5 downward one by one, the liquid reservoirs 5 located at the driven wheel set 36 squeeze the driven wheel body 362, so that the driven wheel set 36 starts to rotate. Moreover, the rotational speed of the driven wheel group 36 matches that of the driving wheel group 35, so that the travel speed of all liquid reservoirs 5 is consistent, thereby expanding the number of reservoirs 5 that can be loaded in the storage box, and compared with simply relying on setting a plurality of driving wheel bodies 352 on the driving wheel group 35 to increase the storage positions, it can reduce the radial size of the storage box, reduce the volume, and make it more convenient for users to carry.

[0061] The width of the driving wheel body 352 is matched with the opening groove 4351 in the driving device 4, so that the opening groove 4351 can clamp any driving wheel body 352, so that the driving wheel set 35 stops rotating and is positioned.

[0062] In the internal space of the housing 21, a partition 23 is also designed between the driving wheel set 35 and the driven wheel set 36 to divide the space between the driving wheel set 35 and the driven wheel set 36 into channels in different directions to allow a single liquid reservoir 5 to move in different directions in the channel. The size of the partition 23 in the direction of the first rotation axis of the driving wheel set 35 is smaller than the size of the driving wheel body 352. Such a design can ensure that the first rod body 435 of the driving device 4 extends into the accommodating box 2, so that when the opening groove 4351 clamps the driving wheel body 352, the partition 23 will not interfere with the first rod body 435, or the partition 23 is fixedly arranged in the housing 21, and the opening groove 4351 is connected to both the partition 23 and the driving wheel body 352 at the same time to achieve the fixing of the driving wheel set 35.

[0063] Combine the following Figure 5-10The reservoir 5 is specifically introduced. The reservoir 5 includes a reservoir body 50 and a piston assembly 52 accommodated inside the reservoir body 50. The specific structure of the piston assembly 52 has been disclosed in the applicant's patent application of the same date entitled "Piston assembly, reservoir including the piston assembly and injection system", and the content of the patent application is incorporated herein by reference.

[0064] The reservoir body 50 is a longitudinally long cylindrical structure. When it is contained in the containing box 2, its axis is parallel to the first direction or the second direction to allow the bead 441 to enter the reservoir body 50 along the first direction or exit the reservoir body 50 along the second direction. The interior of the reservoir body 50 includes a seal 501, a partition wall 502, a through-hole 5021 provided on the partition wall 502, a cavity 503, a flow restriction 504, and an inlet and outlet 505 in sequence. The through-hole 5021 and the inlet and outlet 5026 are both connected to the cavity 503. The reservoir body 50 at the cavity 503 is transparent or translucent to facilitate reading the second scale line 5264 on the piston assembly 52. ​​In this embodiment, the entire reservoir body 50 is transparent.

[0065] The sealing member 501 is made of silicone. When it is necessary to take medicine, the injection needle pierces the sealing member 501 and enters the cavity 503 through the through hole 5021 to extract the medicine. When the injection needle is withdrawn, due to the self-closing property of the silicone, the sealing member 501 can restore the closed state to ensure that the cavity 503 and the environment outside the cavity 503 are in a non-connected state, thereby isolating the liquid medicine from the outside, preventing the liquid medicine from being contaminated, and ensuring that the liquid medicine in the cavity 503 can be stored for a long time.

[0066] The flow restriction 504 is the end of the reservoir body 50. When the reservoir 5 is installed in the storage position, the flow restriction 504 is close to the drive device 4. The flow restriction 504 extends from the outside of the reservoir body 50 toward the axial direction of the reservoir body 50 ( Figure 7 The dotted line in FIG. 5 is also the axial direction of the cavity 503, so that the cross-sectional area enclosed by the flow limiting portion 504 is smaller than the cross-sectional area of ​​the cavity 503. Since the cross-sectional area of ​​the cavity 503 is roughly equivalent to the diameter of the bead 441, the cross-sectional area enclosed by the flow limiting portion 504 is slightly smaller than the diameter of the bead 441.

[0067] Further, such as Figure 5 to Figure 6 As shown, two guide grooves 5041 are provided in the flow limiting portion 504. The two guide grooves 5041 are symmetrically provided with the axis of the reservoir body 50 as the center. The guide grooves 5041 are provided on the inner surface of the reservoir body 50, that is, on the surface of the cavity 503, and penetrate the entire cavity 503 or more than 1 / 2 of the cavity 503 in the axial direction.

[0068] Furthermore, the outer side of the liquid reservoir body 50 has a plurality of first scale lines 505 . In the present embodiment, each first scale line 505 represents 0.01 ml.

[0069] The specific structure of the piston assembly 52 is described below. The piston assembly 52 is accommodated in the cavity 503, and the axis of the piston assembly 52 ( Figure 8 The dashed line shown) and the axis of the cavity 503 ( Figure 7 The dashed lines shown overlap. Figure 7 The direction of the dashed arrow indicates a first direction. The piston assembly 52 is in close contact with the inner surface of the reservoir body 50 and can slide along the cavity 503 under the action of thrust.

[0070] refer to Figure 7-Figure 10 The piston assembly 52 includes a push piston 524, a positioning ring 525 and an adjustment ring 526. One end of the push piston 524 is slidably connected to the adjustment ring 526 to move together. The positioning ring 525 is sleeved at the connection between the push piston 524 and the adjustment ring 526 to make the connection between the push piston 524 and the adjustment ring 526 more reliable.

[0071] Specifically, the push piston 524 includes a blocking body 5240, a fixed body 5242, a sealing strip 5244 and a sliding strip 5246. The blocking body 5240 is in the shape of an annular column, and its outer circumference is a cylindrical shape that matches the cavity 503 of the reservoir body 50; its inner circumference is a shape that matches the fixed portion 5262 of the adjustment ring 526. The fixed body 5242 is arranged at one end of the blocking body 5240, extends from the blocking body 5240 and is connected to the adjustment ring 526. The outer diameter of the fixed body 5242 is smaller than the outer diameter of the blocking body 5240. Therefore, a gap is formed between the outer circumference of the fixed body 5242 and the inner surface of the reservoir body 50 in the cavity 503 to accommodate the positioning ring 525.

[0072] An annular sealing strip 5244 is provided on the outer periphery of the blocking body 5240, and its axis is parallel to the axis of the cavity 503. On the one hand, the sealing body 5240 and the cavity 503 are sealed; on the other hand, the friction force when the blocking body 5240 slides in the cavity 503 will not be too large (causing it to be unable to be pushed). The sliding strip 5246 is adapted to the shape of the aforementioned guide groove 5041, so that the sliding strip 5246 can slide in the guide groove 5041 without being separated from the guide groove 5041. In this way, the moving direction of the sliding strip 5246 is limited, and the injection piston 524 is limited to move only along the axis direction of the cavity 503 (parallel to the first direction or the second direction).

[0073] Please refer to Figure 7-Figure 10The positioning ring 525 includes a positioning portion 5251, a first indicator line 5252, a second indicator line 5253 and a fine-tuning portion 5254. The positioning portion 5251 is an annular cylinder with protruding ribs (having an axis parallel to the first direction), which is sleeved outside the blocking body 5240 and the adjustment ring 526 and fixed in the cavity 503. In addition, the positioning portion 5251 can slide axially in the cavity 503 by sliding the protruding ribs in the guide groove 5041, but will not deviate in the circumferential direction. The number of the protruding ribs is greater than or equal to two, and they are evenly distributed along the circumference with the axis of the positioning portion 5251 as the center.

[0074] The first indicator line 5252 is disposed on the periphery of the positioning portion 5251 and is a striking marking line. Fig. 9 The first indicator line 5252 is a circular line, the center of which is located on the axis of the positioning portion 5251, and the first indicator line 5252 is perpendicular to the axis of the piston assembly 52. ​​The first indicator line 5252 can be made by printing, engraving or laser punching, and can move with the movement of the positioning portion 5251.

[0075] The fine-tuning portion 5254 is in the shape of a ring column, the outer peripheral surface of which is a smooth surface and is provided with a second indicator line 5253, and the inner surface of which has an internal thread. The outer diameter of the fine-tuning portion 5254 is smaller than the outer diameter of the positioning portion 5251, and one end of the fine-tuning portion 5254 is connected to the positioning portion 5251, and the two are integrally formed and have the same axis. Moreover, the first indicator line 5252 and the second indicator line 5253 are perpendicular to each other. That is, the first indicator line 5252 is located in a plane perpendicular to the axis of the cavity 503; the second indicator line 5253 extends along a direction (first direction or second direction) parallel to the axis of the cavity 503.

[0076] The adjustment ring 526 includes a connecting portion 5261, a fine-adjustment support portion 5262, an adjustment portion 5263, a second scale line 5264 arranged on the adjustment portion 5263, and an adjustment groove 5265 provided on the adjustment portion 5263. The connecting portion 5261 is rotatably connected to the fixed body 5242, so that the positioning ring 525 is driven to move when the adjustment ring 526 is moved. The shape of the connecting portion 5261 is not limited, and it only needs to be adapted to the internal shape of the fixed body 5242 so that the connecting portion 5261 can be tightly accommodated in the fixed body 5242. In this embodiment, the connecting portion 5261 is an integrated structure formed by connecting two cylinders of different outer diameters, wherein the outer diameter of the cylinder at one end close to the blocking body 5240 is greater than the outer diameter of the cylinder at the other end, so that when the connecting portion 5261 is subjected to a force in the second direction, it will be stuck by the fixed body 5242, thereby driving the injection piston 524 to move in the second direction. Similarly, when the connecting portion 5261 is acted upon in the first direction, it pushes the fixing body 5242 to move in the first direction, thereby driving the injection piston 524 to move in the first direction.

[0077] The fine-tuning support portion 5262 has an external thread, which is matched with the internal thread of the fine-tuning portion 5254, so that the fine-tuning portion 5254 can spirally move in the first direction or the second direction along the fine-tuning support portion 5262. It is worth mentioning that the external thread of the fine-tuning support portion 5262 is longer than the internal thread of the fine-tuning portion 5254, so that the fine-tuning portion 5254 can move in the first direction or the second direction relative to the fine-tuning support portion 5262. Therefore, in this embodiment, a gap 528 is formed between the fine-tuning portion 5254 and the fine-tuning support portion 5262 to allow the fine-tuning portion 5254 to move relative to the fine-tuning support portion 5262.

[0078] The external thread of the fine-tuning support part 5262 and the internal thread of the fine-tuning part 5254 are configured to have a specified distance of 1 mm per circle. That is, when the fine-tuning support part 5262 rotates one circle relative to the fine-tuning part 5254, the fine-tuning support part 5262 moves 1 mm relative to the cavity 503. Since the fine-tuning part 5254 is fixed in the cavity 503 by the positioning part 5251, the fine-tuning support part 5262 moves 1 mm relative to the cavity 503. Of course, the specified distance is not limited to the 1 mm described in the present invention, and it can be any distance greater than or less than 1 mm, and is designed according to the accuracy of the injection volume actually required and the size of the cavity 503, because the injection volume of each fine-tuning is equal to the product of the specified distance and the cross-sectional area of ​​the cavity 503. That is, the pitch of the thread is proportional to the accuracy of the second scale line. It can be seen that by using the thread to control the accuracy of the push piston 52, the precise control of the injection volume is achieved.

[0079] In the embodiment of the present invention, there are 20 second scale lines 5264, each of which represents 0.05 μL. The second scale lines 5264 representing 0.25 μL, 0.5 μL, 0.75 μL and 1 ml are slightly longer than the other second scale lines 5264 to facilitate user distinction. The second scale lines 5264 are arranged along the axial direction of the piston assembly 52 ( Figure 8 The second indicator line 5253 is arranged on the positioning ring 525, and the second scale line 5264 is arranged on the adjustment ring 526. Alternatively, the second indicator line 5253 can be arranged on the adjustment ring 526, and the second scale line 5264 can be arranged on the positioning ring 525.

[0080] An adjustment groove 5265 is formed at one end of the adjustment portion 5263 away from the blocking body 524. The adjustment groove 5265 is arranged along the axial direction of the piston assembly 52 ( Figure 8 The longitudinal section of the adjusting groove 5265 (shown by the dashed line in the middle) has a T-shaped structure. That is, the inner diameter of the adjusting groove 5265 near the blocking body 5240 is larger than the inner diameter of the other end thereof, so that the inserted handle will not fall off (described in detail later). It can be understood that the shape of the adjusting groove 5265 only needs to be compatible with the shape of the adjustment tool and is not limited thereto.

[0081] Combine the following Figures 11A-11D , specifically introduces how to use the driving device 4 to achieve the injection of the liquid medicine in the liquid reservoir.

[0082] When the control part is pressed by the user, the first bead 441 is pushed into the cavity 503 along the first direction. At this time, since the diameter of the bead 441 is larger than the size enclosed by the flow limiting part 504, friction occurs between the bead 441 and the flow limiting part 504. Under the action of the friction force, the liquid reservoir body 50 is pushed in the first direction. The silicone seal 501 moves forward and is pierced by the fixed connector 1, so that the connector 1 enters the cavity 503 through the through hole 5021, thereby meeting the conditions for extracting or injecting the liquid medicine.

[0083] Next, the first bead 441 overcomes the friction force and enters the cavity 503, and the second bead 441 contacts the flow restriction portion 504, similarly pushing the reservoir body 50 in the first direction. At this time, if the connector 1 has pierced the silicone seal 501, the connector 1 will give a reaction force to the reservoir body 50, making the reservoir body 50 unable to move, so the second bead 441 overcomes the friction force and enters the cavity 503. Similarly, until the plurality of beads 441 fill the cavity 503 outside the piston assembly 52 (i.e., Figure 7If the connector 1 is not pierced when the first bead 441 enters, it will continue to be subjected to a force when the second bead 441 enters the cavity 503, causing the connector 1 to pierce.

[0084] Then, the first bead 441 will contact the adjusting portion 526 and apply a force in the first direction to the adjusting portion 526. The adjusting portion 526 is fixedly connected to the positioning portion 524, so a force in the first direction will be applied to the positioning portion 524. The positioning portion 524 will slide in the guide groove 5041 due to the sliding bar 5246, so that the positioning portion 524 moves in the first direction. As a result, the drug solution in the cavity 503 between the piston assembly 52 and the partition wall 502 is pressed into the connector 1. Then, it enters the biological body through the external pipeline connected to the connector 1.

[0085] When the injection of the liquid medicine is completed, the user releases the control part 41, and the bead 441 is exerted with a force in the second direction, so that the bead 441 passes through the flow limiting part 504, generates a force therewith, and pushes the reservoir body 50 in the second direction. Under this force, the reservoir body 50 moves in the second direction to overcome the force between the connector 1 and the silicone seal 501. Under the influence of this force, the connector 1 is separated from the seal 501. When the seal 501 moves with the reservoir body 50 until the needle is completely withdrawn, the seal 501 automatically closes by utilizing the characteristics of the silicone itself, so that the seal 501 is closed again to avoid contamination.

[0086] <Second Embodiment>

[0087] like Fig.12 and Fig.13 As shown, the liquid reservoir 5 of the present invention can use the handle 6 to adjust the capacity, and can also use the handle to push injection. However, the push injection method using the handle 6 is manual push injection, which cannot achieve the good push injection effect of the driving device 4 in the first embodiment, and the injection speed of manual push injection is not stable enough. It can be understood by ordinary technicians in this field that in special circumstances, it is also feasible to push injection directly using the handle 6.

[0088] First, the structure of the handle 6 is introduced. The handle 6 includes a gripping portion 61 and a docking portion 62 connected to the gripping portion 61. The docking portion 62 is similar to a tweezer structure and includes two slender springs. The ends of the springs have an expansion portion 621. When the spring is in an expanded state (i.e., a state without force), the two expansion portions 621 are adapted to the inner surface of the adjustment slot 5265 so that the expansion portion 621 is tightly accommodated in the adjustment slot 5265. When the spring is in a compressed state, i.e., when the user's hand presses the docking portion 62, the distance between the two expansion portions 621 is reduced, and the spring can be taken out of the adjustment slot 5265.

[0089] In the first embodiment, the liquid medicine is ejected from the joint 1 by the bead 441 of the driving device 4 entering the containing box 2, which is convenient for emptying the liquid medicine in a single liquid reservoir 5, and is suitable for situations where the liquid medicine content in the liquid reservoir is required to be highly accurate. The second embodiment realizes the manual injection of liquid medicine by a handle, and is suitable for situations where the liquid medicine content in the liquid reservoir is not required to be highly accurate.

[0090] In another case, before injection, the piston assembly 52 is moved by the handle to draw the drug liquid into the reservoir 5, and the transparent or translucent window 210 provided on the container is used to observe the state of the drug liquid being drawn by the reservoir 5, until the drug liquid is drawn to fill the entire cavity 503. Then, when injection is required, the beads 441 of the driving device 4 are used to push the liquid in the reservoir 5 in batches as needed.

[0091] <Third Embodiment>

[0092] The present invention further provides an injection system, which includes a housing box 2 , a plurality of liquid reservoirs 5 housed in the housing box 2 , and a driving device 4 and / or a handle 6 for driving the liquid reservoirs 5 .

[0093] The following is an example of how to use the piston assembly 52 of the present invention to achieve precise dosage control in combination with specific usage scenarios. When a quantitative drug needs to be injected into the cavity 503, for example, 60.5 μL needs to be injected, the docking portion 62 of the handle 6 is first connected to the adjustment groove 5265 of the adjustment ring 10. At this time, the user presses the docking portion 62 to shrink the expansion portion 621 and extend it into the adjustment groove 5265 along the guide groove 5041. Then the user releases the docking portion 62, and the expansion portion 621 is fixed in the adjustment groove 5265.

[0094] Afterwards, the user rotates the handle 6 through the grip portion 61 (keeping the docking portion 62 from being pressed and the expansion portion 621 in an expanded state), and the expansion portion 621 drives the adjustment portion 5263 to rotate and advance along the internal thread on the positioning ring 525. Since the adjustment portion 5263 advances 1 mm in the first direction for each turn of the thread in the first direction, the volume in the cavity 503 on one side of the piston assembly 52 (i.e., the cavity 503 between the piston assembly 52 and the connector 1) decreases accordingly. As the adjustment portion 5263 rotates relative to the positioning ring 525, the second scale line 5264 on the adjustment portion 5263 rotates, and the second indicator line 5253 on the positioning ring 525 will be aligned with the position of the second scale line 5264 after rotation, thereby indicating the value on the second scale line 5264. In this embodiment, the value on the second scale line 5264 is 0.5 μL.

[0095] Next, the user uses the grip 61 to pull or push the piston assembly 52, so that the piston assembly 52 as a whole moves axially relative to the cavity 503. The first indicator line 5252 on the positioning ring overlaps with the specific first scale line 505 on the reservoir body 50. In this embodiment, because 60.5 μL is to be obtained, the value of the specific first scale line 505 is 60 μL (0.06 mL). At this time, the volume of the liquid contained in the cavity 503 of the reservoir 5 is 60.5 μL.

[0096] After the connector 1 pierces the seal 501, the piston assembly 62 is pushed in the first direction by the handle 6 or the driving device 4, so that the liquid medicine in the cavity 503 can be injected into the body through the connector 1. When the injection of the medicine is completed, the handle 6 is separated from the adjustment part 5263 to prevent the waste of medicine or harm to the user caused by misoperation.

[0097] The liquid reservoir 5 of the present invention has two sets of scales (first scale lines and second scale lines), and the first scale lines are adjusted by pulling or pushing the piston assembly, and the second scale lines are adjusted by rotating the adjustment portion 5263 along the thread relative to the cavity 503, thereby improving the adjustment accuracy of the volume of the cavity 503. By using high-precision volume to control the amount of liquid medicine injected or extracted, accurate injection volume control is achieved.

[0098] Specifically, the present invention utilizes beads 441 to enter the cavity 503 one by one to push the piston assembly 52 to move in the first direction. Since the specifications of the beads 441 are the same, the travel distance is the same each time, and the piston assembly 52 can be stably pushed; the first indicator line 5252 and the second indicator line 5253 on the positioning ring 525 are used to indicate the first scale line 505 on the cavity 503 and the second scale line 5264 on the adjustment ring 526, thereby having two sets of scales to indicate the amount of liquid medicine, thereby improving the indication accuracy; the threaded connection is used to make the travel amount accurately controlled to increase the accuracy of fine-tuning.

[0099] Moreover, since the seal 501 is an elastic material such as silicone, it can be automatically sealed to avoid contamination, so multiple liquid reservoirs can be stored in the container box 2 for a long time. According to the needs of the user, the liquid medicine in multiple liquid reservoirs can be used at one time (for use in large-dose scenarios); or the liquid medicine in only one liquid reservoir can be used at a time (for use in small-dose scenarios); or different doses of liquid medicine can be injected into multiple liquid reservoirs and used in combination as needed (scenarios that require different doses, such as different doses in the morning and evening). The dosage adjustment range is larger and more flexible.

[0100] Furthermore, in the fluid reservoir system described in the present invention, the connector 1 can be connected to the indwelling needle through a Luer connector, so that the patient can continue to use it after a single insertion without repeated insertion.

[0101] The storage box of the present invention utilizes a driving wheel structure to achieve multiple installations, and has the advantages of convenient use and simple operation; the driving wheel and driven wheel structure are utilized to achieve continuous injection of multiple liquid storage devices; the storage box of the present invention and the driving device are separate structures, and are compact and easy to carry.

[0102] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0103] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A container for accommodating a liquid storage device, characterized in that: The housing box is used for an injection system, and comprises a housing, a driving wheel set and a medicine delivery position; The housing is provided with a driving port; The driving wheel assembly is contained in the housing and comprises a plurality of storage positions arranged around the first rotating shaft, the storage positions are used to load the liquid reservoir, and the storage positions can rotate relative to the first rotating shaft; The medicine delivery position is aligned with the driving port, and the plurality of storage positions are located one by one at the medicine delivery position when the plurality of storage positions rotate relative to the first rotating shaft; The driving wheel assembly comprises a driving wheel body rotatably connected to the housing, and a connecting port arranged on the driving wheel body, wherein the connecting port is used to drive the driving wheel body to rotate; a plurality of the connecting ports are arranged on the driving wheel body, and the plurality of the connecting ports correspond to the plurality of the storage positions one by one; The driving wheel set also includes a plurality of driving wheel bodies.

2. A container for accommodating a liquid storage device according to claim 1, characterized in that: The plurality of driving wheel bodies extend radially outward around the first rotating shaft, and the storage position is formed between two adjacent driving wheel bodies.

3. A container for accommodating a liquid storage device according to claim 1, characterized in that: The connection port is a special-shaped hole, and the connection port is provided with an inclined surface having a guiding function.

4. A container for accommodating a liquid storage device according to claim 1, characterized in that: The opening direction of the connecting port is parallel to the first rotating axis.

5. A container for accommodating a liquid storage device according to claim 1, characterized in that: It also includes a driven wheel set, which is arranged in the housing and can rotate relative to a second rotating shaft, and the second rotating shaft is parallel to the first rotating shaft.

6. A container for accommodating a liquid storage device according to claim 5, characterized in that: The driven wheel set is configured to rotate synchronously with the driving wheel set.

7. A container for accommodating a liquid storage device according to claim 5, characterized in that: The driven wheel assembly includes a plurality of driven wheel bodies extending radially outward relative to the second rotating shaft, and each of the driven wheel bodies is driven by the gravity of the liquid reservoir to passively rotate around the second rotating shaft.

8. A container for accommodating a liquid storage device according to claim 5, characterized in that: A partition is provided between the driving wheel group and the driven wheel group, and the partition divides the space between the driving wheel group and the driven wheel group in the housing into two channels so that the liquid reservoir can move in opposite directions in the channels on both sides of the partition.

9. An injection system, characterized in that: It comprises a liquid reservoir, a driving device for driving the liquid reservoir, and a containing box for containing the liquid reservoir as described in any one of claims 1-8, wherein the liquid reservoir is contained in the containing box, and the driving device drives the liquid reservoir by cooperating with the containing box.

10. The injection system according to claim 9, characterized in that The size of the driving opening matches the driving device so that the driving device can enter the driving opening.

11. The injection system according to claim 10, characterized in that The driving device comprises an open groove for limiting the rotation of the driving wheel set, and the thickness of the driving wheel body matches the width of the open groove to clamp the driving wheel body.

12. The injection system of claim 11, wherein: The driving device comprises a pawl for extending into the connecting port, and the pawl is inserted into at least one of the plurality of connecting ports in sequence to drive the driving wheel set to rotate.

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