Medicine mixing instrument and positioning device thereof

Abstract

The utility model relates to the technical field of medical instruments, and discloses a medicine mixing instrument and a positioning device thereof, the medicine mixing instrument positioning device comprises a supporting piece, the supporting piece is used for supporting two injectors, needles of the two injectors are connected through a connector, the supporting piece is provided with a limiting part, the limiting part is provided with a groove, and the connector is connected with the limiting part. The groove width of the groove is smaller than the outer diameter of a cylinder body of an injector, and limiting end faces are arranged at the two ends of the groove respectively. When fixing is carried out, two injectors are placed on the supporting piece, meanwhile, the connector is placed in the groove, the barrel is located outside the groove, and the limiting end face makes contact with a shaft shoulder, close to a needle head, of the barrel, so that the barrel is axially limited. The positioning mode is simple, effective and convenient to operate, the operation difficulty can be effectively reduced, and the working efficiency can be effectively improved. During medicine mixing, the piston rods of the two injectors are pushed back and forth, and the shaft shoulder of the barrel is blocked by the limiting end face, so that the barrel can be prevented from axially moving, and the stability during medicine mixing is ensured.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a drug mixing instrument positioning device, and also to a drug mixing instrument including the above-mentioned drug mixing instrument positioning device. Background Technology

[0002] A drug mixing device is an instrument used to mix liquid medicines. It is primarily used with two interconnected syringes. During mixing, both syringes need to be fixed to the mixing device.

[0003] The existing method of fixing syringes in drug mixing devices mainly involves using a brake to secure the syringe barrel to the device. For example, the prior art with patent publication number CN220328364U, entitled "A Drug Mixer," uses this fixing method. This fixing method is usually only suitable for syringes of one outer diameter, and it is prone to axial movement during drug mixing. In addition, the brake needs to be disassembled and reassembled during use. When changing syringes frequently in a short period of time, the need to disassemble and reassemble the brake each time causes great inconvenience to the user. Utility Model Content

[0004] One objective of this invention is to provide a positioning device for a mixing instrument to solve the problems of inconvenient operation and poor positioning effect when fixing the syringe in existing mixing instruments. Another objective is to provide a mixing instrument that includes the above-mentioned positioning device for a mixing instrument.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A positioning device for a mixing instrument includes: a support member, a limiting part on the support member, a groove on the limiting part for accommodating a connector, the connector for connecting the needles of two syringes, the groove width being smaller than the outer diameter of the syringe barrel, and limiting end faces at both ends of the groove for contacting with a shoulder on the barrel near the needle.

[0007] In some technical solutions, the support member is also provided with two support grooves, which are located on both sides of the limiting part, and the support grooves are used to support the cylinder.

[0008] In some technical solutions, the support groove is a U-shaped groove or a V-shaped groove.

[0009] In some technical solutions, the mixing device also includes a cover plate, which is detachably connected to the support member and is used to press the cylinder into the support groove.

[0010] In some technical solutions, one end of the cover plate is hinged to one side of the upper end of the support groove, and the other end is detachably connected to the other side of the upper end of the support groove.

[0011] In some technical solutions, the support member is provided with two clearance grooves, which are located at the two ends of the groove, and the width of the clearance groove is greater than the outer diameter of the cylinder.

[0012] In some technical solutions, both of the support grooves include a front groove and a tail groove, and the clearance groove is located between the front groove and the tail groove. The front groove is used to support the front section of the cylinder, and the tail groove is used to support the tail section of the cylinder.

[0013] A mixing instrument includes the mixing instrument positioning device described in any one of the above claims, and further includes a housing, the housing having a receiving groove for receiving the mixing instrument positioning device.

[0014] In some technical solutions, the positioning device of the mixing instrument can be detachably connected to the receiving groove.

[0015] In some technical solutions, the housing is provided with a first driving member and a second driving member, the first driving member being used to drive the piston rod of one of the syringes to move axially, and the second driving member being used to drive the piston rod of the other syringe to move axially.

[0016] Compared with existing technologies, the above technical solution has the following advantages:

[0017] This utility model provides a positioning device for a mixing instrument. During positioning, two syringes are placed on a support, with the connectors positioned within a groove. The syringe barrels are located outside the groove, and the limiting end faces contact the shoulders of the barrels near the needle tips. This axial positioning of the syringes is achieved through the limiting end faces and the shoulders on the syringes. This positioning method is simple, effective, and easy to operate, significantly reducing operational difficulty and improving work efficiency. During mixing, the piston rods of the two syringes are reciprocated to achieve the mixing function. During the piston rod pushing process, the shoulders of the barrels are blocked by the limiting end faces at the end of the groove, effectively preventing axial movement of the barrels and ensuring stability during mixing.

[0018] The mixing instrument provided by this utility model includes the above-mentioned mixing instrument positioning device, and therefore also has the beneficial effects of the mixing instrument positioning device, which will not be described in detail here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 A three-dimensional structural schematic diagram of a positioning device for a mixing instrument provided in a specific embodiment of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of region A in the image;

[0022] Figure 3 A top view of a positioning device for a mixing instrument provided in a specific embodiment of this utility model;

[0023] Figure 4 A three-dimensional structural diagram of a drug mixing instrument positioning device with a syringe installed, provided for a specific embodiment of this utility model;

[0024] Figure 5 for Figure 4 Enlarged view of region B in the image;

[0025] Figure 6 A top view of a positioning device for a mixing instrument with a syringe installed, according to a specific embodiment of this utility model.

[0026] Figure 7 for Figure 6 Enlarged view of region C in the image.

[0027] The attached figures are labeled as follows:

[0028] 10-Supporting component, 11-Limiting part, 111-Groove, 112-Limiting end face, 12-Supporting groove, 121-Front groove, 122-Tail groove, 13-Allowing groove, 14-Cavity, 141-Hinge shaft;

[0029] 20-Cover plate;

[0030] 30-Injector, 31-Cylinder, 311-Shoulder, 32-Piston rod;

[0031] 40-Connector;

[0032] 50 - Housing, 51 - First drive component, 52 - Second drive component. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please refer to Figures 1 to 7 .

[0035] The present invention provides a positioning device for a mixing instrument, comprising: a support member 10 for supporting two syringes 30, the two syringes 30 having identical structures and their needles connected by a connector 40 to achieve mutual communication between the inner cavities of the two syringes 30, wherein the connector 40 may be a Luer connector, such as... Figure 1 As shown, the support member 10 is provided with a limiting part 11, and the limiting part 11 is provided with a groove 111. The structure of the groove 111 can be a groove-shaped structure with the bottom surface and the side surface of the groove being at right angles. The groove 111 is used to accommodate the connector 40. The groove width of the groove 111 is smaller than the outer diameter of the barrel 31 of the syringe 30. The two ends of the groove 111 are respectively provided with limiting end faces 112. When positioning, the two syringes 30 are placed on the support member 10, and the connector 40 is placed in the groove 111. The barrels 31 of the two syringes 30 are located outside the groove 111. The limiting end faces 112 are used to contact the shoulder 311 on the barrel 31 near the needle tip. That is, the limiting end faces 112 and the shoulder 311 on the syringe 30 can play an axial limiting role for the syringe 30. During drug mixing, the piston rod 32 of one syringe 30 can be pushed to mix the liquid into the barrel 31 of the other syringe 30. Simultaneously, the piston rod 32 of the other syringe 30 is passively moved outward under hydraulic pressure. This reciprocating motion of pushing the piston rods 32 of both syringes achieves the drug mixing function. During the mixing process, the axial positioning of the syringe 30 is achieved by utilizing the shoulder 311 near the needle and the limiting end face 112 at the end of the groove 111. This positioning method is simple, effective, and easy to operate, effectively reducing operational difficulty and improving work efficiency.

[0036] It should be noted that the support member 10 can be a plate or a block. When a plate is selected, an upwardly protruding limiting part 11 can be provided on the upper surface of the plate. The limiting part 11 has a groove 111, which is a through groove. The groove 111 extends horizontally in the length direction. The two end faces of the limiting part 11 are limiting end faces 112. The groove width of the groove 111 is smaller than the outer diameter of the barrel 31 of the syringe 30. The upper surface of the plate can support the syringe 30. One syringe 30 is placed on each side of the limiting part 11. The connectors 40 of the two syringes 30 are located in the groove 111. At this time, the shoulders 311 near the needles on the barrels 31 of the two syringes 30 are in contact with the two end faces of the limiting part 11. Therefore, when the piston rod 32 of the syringe 30 is pushed during drug mixing, the axial movement of the barrel 31 of the syringe 30 can be prevented by the blocking action of the limiting part 11, thereby improving the stability during drug mixing. When the support member 10 is selected as a block, such as a cuboid block, a downwardly recessed joint 40 placement area and a cylinder 31 placement area can be provided on the upper surface of the cuboid block. The structure with the joint 40 placement area is the limiting part 11 mentioned in the above embodiment.

[0037] In some embodiments, such as Figures 1 to 3 As shown, the support member 10 is also provided with two support grooves 12. The two support grooves 12 are located on both sides of the limiting part 11, that is, the groove 111 is located between the two support grooves 12. The support grooves 12 are used to support the cylinder 31. One support groove 12 located on one side of the groove 111 can support one cylinder 31, and the other support groove 12 located on the other side of the groove 111 can support the other cylinder 31. By supporting the cylinder 31 through the support grooves 12, the support stability of the syringe 30 can be improved, so as to prevent the syringe 30 from deflecting.

[0038] In some embodiments, such as Figure 1 and Figure 2 As shown, the support groove 12 is either a U-shaped groove or a V-shaped groove. The arc-shaped bottom structure of the U-shaped groove is adapted to the arc-shaped structure of the syringe barrel 31, meaning that the barrel 31 and the U-shaped groove are in surface contact, which can improve the support stability of the barrel 31. The V-shaped groove can accommodate the support of barrels 31 with different outer diameters, so as to realize the positioning function of the mixer for syringes 30 with different outer diameters. Specifically, after the barrel 31 with a smaller outer diameter is placed in the V-shaped groove, it will be in a lower position in the V-shaped groove, and after the barrel 31 with a larger outer diameter is placed in the V-shaped groove, it will be in a higher position in the V-shaped groove, both of which can achieve the support function of the barrel 31.

[0039] In some embodiments, such as Figure 6As shown, the mixing device also includes a cover plate 20, which is closably connected to the support member 10. The cover plate 20 can press the cylinder 31 into the support groove 12 to fix the cylinder 31 in the circumferential direction, thereby improving the stability of the syringe 30 during drug mixing. Before or after drug mixing, the cover plate 20 needs to be opened from the support member 10. After the syringe 30 is inserted, the cover plate 20 can be closed onto the support groove 12. Furthermore, to prevent the cover plate 20 from damaging the cylinder 31, such as flattening or cracking it, an elastic layer can be provided on the side of the cover plate 20 facing the support groove 12, such as a deformable spring or rubber layer. During compression, the elastic layer can fill the gap between the cover plate 20 and the cylinder 31 and also act as a buffer to prevent damage to the cylinder 31 due to rigid compression. In addition, to improve the pressing effect of the cover plate 20 on the cylinder 31, an arc-shaped groove 111 or a V-shaped groove 111 can be provided on the side of the cover plate 20 facing the support groove 12. The arc-shaped groove 111 is adapted to the arc-shaped structure of the outer circumference of the cylinder 31. When the cover plate 20 is pressed on the cylinder 31, the two inclined surfaces in the V-shaped groove 111 contact the outer circumference of the upper part of the cylinder 31, which can effectively improve the pressing stability of the cover plate 20 on the cylinder 31.

[0040] In some embodiments, such as Figure 6 As shown, the cover plate 20 can be a strip-shaped structure. One end of the cover plate 20 is hinged to one side of the upper end of the support groove 12, meaning the cover plate 20 can rotate relative to the support groove 12. The other end of the cover plate 20 is detachably connected to the other side of the upper end of the support groove 12. After the syringe 30 is placed in the support groove 12, the cover plate 20 can be placed on the support groove 12. After the medicine is mixed, the cover plate 20 can be lifted off the support groove 12. Specifically, a cavity 14 can be provided on the support member 10. The length extension direction of the cavity 14 is perpendicular to the length extension direction of the support groove 12. A hinge shaft 141 can be provided at one end of the cavity 14. One end of the cover plate 20 passes through the hinge shaft 141. The other end of the cover plate 20 can be snapped onto the support member 10, or it can be detachably connected to the support member 10 by other structures, such as screws. When the cover plate 20 is pressed onto the cylinder 31, the cover plate 20 is located in the cavity 14 to ensure the flatness of the upper surface of the support member 10.

[0041] In some embodiments, such as Figures 1 to 3As shown, the support member 10 is provided with two clearance grooves 13. The shape of the clearance groove 13 can be a cuboid groove or an arc-shaped groove with a concave arc structure at the bottom. The two clearance grooves 13 are located at both ends of the groove 111, and the width of the clearance groove 13 is greater than the outer diameter of the cylinder 31. The syringe 30 is suspended above the clearance groove 13. After the medicine is mixed, the user's finger can be inserted into the gap between the cylinder 31 of the syringe 30 and the inner wall of the clearance groove 13, and then the syringe 30 can be hooked upward. By arranging clearance grooves 13 on both sides of the groove 111, it is easy for the user to stably remove the syringe 30 from the support groove 12, and it is not easy to disconnect the connectors 40 of the two syringes 30, so as to avoid the mixed medicine from leaking out of the connectors 40. In addition, the clearance grooves 13 also make it easier for the user to place the syringe 30 in the support groove 12, thereby reducing the difficulty of positioning the syringe 30.

[0042] In some embodiments, such as Figures 1 to 3 As shown, both support grooves 12 consist of two parts: a front groove 121 and a tail groove 122. The front groove 121 refers to the end near the needle of the syringe 30, and the tail groove 122 refers to the end of the barrel 31 away from the needle of the syringe 30. A clearance groove 13 is located between the front groove 121 and the tail groove 122. The front groove 121 supports the front section of the barrel 31, and the tail groove 122 supports the tail section of the barrel 31. Specifically, the length of the tail groove 122 can be greater than the length of the front groove 121, allowing the cover plate 20 to be pressed against the tail section of the barrel 31. Furthermore, the length of the tail groove 122 can be equal to or less than the length of the front groove 121, depending on actual needs. By placing the clearance groove 13 between the front groove 121 and the tail groove 122, it not only facilitates the placement and removal of the syringe 30 but also provides support for the front and rear ends of the syringe 30, thus ensuring the stability of the syringe 30.

[0043] In summary, the positioning method of the drug mixing instrument positioning device provided by this utility model is as follows: Before positioning, the needles of the two syringes 30 need to be connected through the connector 40; open the two cover plates 20, and then place the barrels 31 of the two syringes 30 into the corresponding support grooves 12 respectively, while the connector 40 is located in the groove 111, and the shoulders 311 of the two barrels 31 near the needles are in contact with the limiting end faces 112 at both ends of the groove 111 respectively; then close the cover plates 20 on the support grooves 12 to press the barrels 31 into the support grooves 12; finally, the drug mixing operation can be carried out.

[0044] This utility model embodiment also provides a mixing instrument, including the mixing instrument positioning device of any of the above claims, and further including a housing 50, on which a receiving groove is provided for receiving the mixing instrument positioning device, for example. Figure 6As shown, a downwardly recessed receiving groove can be provided on the upper surface of the housing 50, and the support member 10 of the mixing instrument positioning device can be placed in the receiving groove. For the beneficial effects of the mixing instrument, please refer to the mixing instrument positioning device in the above embodiments; further details will not be provided here.

[0045] In some embodiments, the mixing instrument positioning device can be detachably connected to the receiving groove, for example, by screws. Specifically, a connecting plate can be provided on the outer periphery of the support member 10. The connecting plate can be placed on the upper surface of the housing 50, and then the connecting plate can be connected to the housing 50 by screws. Multiple different mixing instrument positioning devices can be provided, differing in the length and width of the groove 111 and the length and width of the support groove 12. For example, when two syringes 30 are connected via the connector 40, if the distance between the two shoulders 311 is small, a support member 10 with a shorter groove 111 can be selected for installation; when the outer diameter of the syringe barrel 31 is large, a support member 10 with a wider support groove 12 can be selected for installation. It can be understood that the appropriate support plate can be selected for installation according to the size of the syringe 30 that needs to be positioned. By detachably connecting the support member 10 to the housing 50, a single housing 50 structure can be adapted to accommodate multiple support members 10, thereby enabling drug mixing operations for syringes 30 of different sizes. This eliminates the need for a separate drug mixing device for each size of syringe 30, effectively reducing usage costs when dealing with drug mixing operations for different syringes 30.

[0046] In some embodiments, such as Figure 6 As shown, the housing 50 is provided with a first driving member 51 and a second driving member 52. The first driving member 51 is used to drive the piston rod 32 of one of the syringes 30 to move axially, and the second driving member 52 is used to drive the piston rod 32 of the other syringe 30 to move axially. Specifically, when the first driving member 51 drives the piston rod 32 of one of the syringes 30 to push in, the second driving member 52 does not drive the piston rod 32 of the other syringe 30 to move. When the piston rod 32 of the other syringe 30 is pushed out to a preset position, the second driving member 52 then drives the piston rod 32 of this syringe 30 to push in. Similarly, when the second driving member 52 drives the piston rod 32 to push in, the first driving member 51 does not drive the other piston rod 32 to move, that is, only one piston rod 32 is driven by the driving force, and the other piston rod 32 is passively pulled out under the action of hydraulic pressure. The first driving component 51 and the second driving component 52 only need to be able to control the axial movement of the piston rod 32. This embodiment does not make specific limitations on their specific structure. For example, a linear motor, a lead screw and nut type driving device, a gear and rack type driving device, a synchronous belt type driving device, etc. can be selected.

[0047] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0048] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0049] The above provides a detailed description of a mixing instrument and its positioning device provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A device for positioning a mixing device, characterized in that The application relates to a medicine mixing device, which comprises a support (10) provided with a limiting part (11), a groove (111) for accommodating a joint (40) is arranged on the limiting part (11), the joint (40) is used for connecting the needle of two injectors (30), the groove (111) has a width smaller than the outer diameter of a barrel (31) of the injector (30), limiting end faces (112) are arranged at the two ends of the groove (111) respectively, and the limiting end faces (112) are used for contacting the shaft shoulder (311) of the barrel (31) near the needle. Two support grooves (12) are further arranged on the support (10), the two support grooves (12) are arranged on the two sides of the limiting part (11) respectively, and the support grooves (12) are used for supporting the barrel (31).

2. The device of claim 1, wherein, The support grooves (12) are U-shaped grooves or V-shaped grooves.

3. The positioning device for a medicine mixing instrument according to claim 2, wherein The medicine mixing device further comprises a cover plate (20) which is connected to the support (10) in an openable and closable mode, and the cover plate (20) is used for pressing the barrel (31) in the support grooves (12).

4. The positioning device of claim 2, wherein One end of the cover plate (20) is hingedly connected to one side of the upper end of the support groove (12), and the other end is detachably connected to the other side of the upper end of the support groove (12).

5. The positioning device for a mixing device according to claim 4, characterized in that Two avoiding grooves (13) are arranged on the support (10), the two avoiding grooves (13) are arranged at the two ends of the groove (111) respectively, and the width of the avoiding grooves (13) is greater than the outer diameter of the barrel (31).

6. The positioning device of claim 2, wherein The two support grooves (12) each comprise a front groove (121) and a tail groove (122), the avoiding grooves (13) are arranged between the front grooves (121) and the tail grooves (122), the front grooves (121) are used for supporting the front section of the barrel (31), and the tail grooves (122) are used for supporting the tail section of the barrel (31).

7. The positioning device of claim 6, wherein, The application further relates to a medicine mixing device positioning device, which comprises the positioning device of any one of claims 1 to 7, and a shell (50) provided with an accommodating groove for accommodating the medicine mixing device positioning device.

8. A medicine mixing device, characterized by, The medicine mixing device positioning device is detachably connected in the accommodating groove.

9. The compounder of claim 8 wherein, The shell (50) is provided with a first driving member (51) and a second driving member (52), the first driving member (51) is used for driving the axial movement of the piston rod (32) of one of the injectors (30), and the second driving member (52) is used for driving the axial movement of the piston rod (32) of the other injector (30).

10. The compound of claim 8, wherein ​

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