Medicine shaking device for rehabilitation nursing
By using a drive motor and gear assembly to drive the drug storage test tube to perform compound motion, combined with electric heating, the problem of uneven drug mixing is solved, achieving a highly efficient and uniform drug mixing effect.
Patent Information
- Application Number
- CN202511285073.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2025-10-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing drug mixing devices do not achieve ideal mixing results, especially for complex fluids and drugs containing small particle precipitates. It is difficult to achieve uniform mixing through a single motion mode, and manual mixing operations are difficult to standardize.
The main shaft is driven by a drive motor, which, combined with gear and cam assemblies, causes the drug storage tube to rotate periodically and oscillate up and down. Combined with a planetary gear structure, three-dimensional mixing is achieved. At the same time, heating can be achieved through an electric heating plate to adjust the mixing intensity and ensure uniformity.
It improves the efficiency and uniformity of drug mixing, ensures the homogeneity and efficacy of the drugs, avoids over-mixing, and reduces the variability caused by manual operation.
Smart Images
Figure CN120860883A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical auxiliary equipment technology, specifically to a drug mixing device for rehabilitation and nursing care. Background Technology
[0002] In clinical practice of rehabilitation nursing, oral solutions, suspensions, syrups, and some powders that require dissolution are widely used. The active ingredients in these medications may precipitate, separate into layers, or distribute unevenly due to standing, resulting in inconsistent drug concentrations. Therefore, before administering these medications to patients, they must be thoroughly shaken to ensure accurate dosage and stable efficacy. This is a crucial step in guaranteeing therapeutic effect and medication safety. If the medication is not thoroughly mixed, the concentration of the active ingredient in the upper layer may be too low, potentially failing to achieve the expected therapeutic effect; conversely, the concentration of the lower layer of sediment may be too high, leading to overdose and adverse reactions, posing a potential risk to patients, especially those in the recovery phase.
[0003] Currently, drug mixing procedures include manual mixing and mixing with devices / equipment. Manual mixing is difficult to guarantee uniformity and stability, and the force, frequency, amplitude, and duration of manual mixing depend on the nurse's subjective experience and mental state, making it easy for nurses to become fatigued and unable to maintain standardized operations for extended periods. Furthermore, significant differences in operation between nurses lead to inconsistent drug mixing quality, making standardized nursing care impossible. Existing mixing devices mostly use a single, fixed motion pattern to simulate manual shaking, only achieving left-right reciprocating oscillation, up-down reciprocating oscillation, or periodic rotation around an axis. The flow trajectory and shear force of the drug solution within the bottle are limited. For complex fluids, drugs with multiple types of raw materials, or drugs containing a large number of tiny particle precipitates, this single-mode energy input is insufficient to effectively break up precipitate agglomerates and overcome intermolecular forces within the liquid. The drug mixing effect is inferior to that of multi-dimensional, complex motion manual operation, resulting in unsatisfactory mixing uniformity. Summary of the Invention
[0004] This invention aims to provide a drug mixing device for rehabilitation and nursing care. The drug to be mixed is contained in a drug storage test tube. A drive motor drives the main shaft to rotate, causing the drug storage test tube to rotate periodically and oscillate up and down under the action of a gear assembly (bevel gear set and planetary gear set) and a cam assembly (cam disk and roller). This results in high mixing efficiency and good mixing uniformity of the drug in the drug storage test tube, solving the problems in the prior art.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A drug mixing device for rehabilitation nursing includes a base and several drug storage tubes. The base is connected to a drive motor, a mixing matrix, and an inner splined cylinder. The mixing matrix is slidably connected to the base, and the inner splined cylinder is rotatably connected to the base. The output shaft of the drive motor is fixedly connected to a main shaft, and the main shaft is fixedly connected to a drive bevel gear and a cam disk. The mixing matrix is connected to a central shaft, a fixed gear ring, and a roller. The central shaft is rotatably connected to the mixing matrix and has an external spline that mates with the internal spline of the inner splined cylinder. The external spline slides through the internal spline cylinder, and the internal spline cylinder is fixedly connected to a driven bevel gear that meshes with the driving bevel gear. The roller slides against the flange of the cam disk. The central shaft is connected to a planetary carrier and a sun gear. The sun gear is fixedly connected to the central shaft. The planetary carrier is rotatably connected to several planetary gears that mesh externally with the sun gear. The fixed gear ring is fixedly connected to the mixing matrix. Several planetary gears mesh internally with the fixed gear ring. Several planetary gears are connected to a fixed cylinder for fixing the drug storage test tube.
[0007] Furthermore, the base is detachably connected to a cover, and the hybrid substrate is located on the inner side of the cover.
[0008] Furthermore, an electric heating plate is connected to the inner wall of the cover.
[0009] Furthermore, the electric heating plate is electrically connected to a central controller that controls its heating power; the drive motor is a servo motor, and the central controller is electrically connected to the drive motor and controls its output rotation speed and rotation direction.
[0010] Furthermore, the open end of the drug storage test tube is detachably connected to a test tube cap.
[0011] Furthermore, the central shaft is also connected to a clamping disc, which has several placement grooves that correspond one-to-one with the fixed cylinder; the clamping disc is made of elastic material, and the diameter of the placement groove is not greater than the outer diameter of the drug storage tube.
[0012] Furthermore, the cam disk is evenly provided with a plurality of cam grooves, the roller is rotatably connected to the mixing matrix, and the radius of the roller is consistent with the radius of the cam groove.
[0013] Furthermore, the base is provided with a sliding groove, and the hybrid substrate is provided with a protrusion that cooperates with the sliding groove, the protrusion being slidably disposed on the inner side of the sliding groove.
[0014] Furthermore, the base and the hybrid substrate are connected by a spring; the opposite sides of the base and the hybrid substrate are each connected to a column, and the spring is sleeved on the outside of the column.
[0015] Furthermore, there are two of each of the drive motors and springs. The two drive motors and the two springs are mirror-symmetrically arranged with the vertical center plane of the base as the reference plane, and the two drive motors and the two springs are intermittently arranged. The main shaft rotates through the side wall of the base, and the spring, the drive bevel gear and the cam disk are all located on the inner side of the base.
[0016] The principles and beneficial effects of the technical solution are as follows:
[0017] 1. This invention provides a drug mixing device for rehabilitation and nursing, comprising a base and a drug storage tube. The drug to be mixed is contained inside the drug storage tube. The base is connected to a drive motor, a mixing body, and an inner splined cylinder. The mixing body is slidably connected to the base, and the inner splined cylinder is rotatably connected to the base. The output shaft of the drive motor is fixedly connected to a main shaft. The main shaft is fixedly connected to a driving bevel gear and a cam disc. The mixing body is connected to a central shaft, a fixed gear ring, and a roller. The central shaft has an external spline that mates with the internal spline of the inner splined cylinder. The external spline slides through the inner splined cylinder. The inner splined cylinder is fixedly connected to a driven bevel gear that meshes with the driving bevel gear. The roller slides against the flange of the cam disc. When the drive motor is started, the main shaft rotates. The driving bevel gear and the cam disc rotate with the rotation of the main shaft. The central shaft rotates under the action of the bevel gear and the spline. The roller reciprocates linearly with the periodic change of the eccentricity at the contact point between the cam disc and the roller. The process involves the mixing matrix reciprocating up and down. The central shaft connects to a planetary carrier and a sun gear. The sun gear is fixedly connected to the central shaft, and the planetary carrier rotatably connects to several planetary gears that mesh externally with the sun gear. A fixed gear ring is fixedly connected to the mixing matrix, and these planetary gears mesh internally with the fixed gear ring. When the central shaft rotates, these planetary gears rotate (around the axis of the sun gear / central shaft) and simultaneously rotate (around their own axis connected to the planetary carrier). Each planetary gear is connected to a fixed cylinder for securing the drug storage tubes. The drug storage tubes, containing the drug, are fixedly placed inside the fixed cylinders. The drug storage tubes reciprocate up and down with the mixing matrix, and simultaneously rotate with the planetary gears. This process utilizes three mixing methods (rotation, rotation, and oscillation) to simultaneously achieve drug mixing, resulting in high mixing efficiency and good uniformity of the mixed drug.
[0018] 2. The present invention provides a drug mixing device for rehabilitation and nursing, wherein a cover is connected to a base, and a mixing matrix is located inside the cover. The cover protects the mixing matrix / drug storage cylinder, etc., reducing the risk of accidental damage. An electric heating plate is connected to the inner wall of the cover. The electric heating plate periodically heats the drug (the drug storage cylinder rotates, and the electric heating plate can periodically heat the drug inside even if it is located on the outside), which intensifies the molecular activity between drugs and further improves the mixing effect and efficiency of the drugs. The electric heating plate is electrically connected to a central controller that controls its heating power. The drive motor is a servo motor. The central controller is electrically connected to the drive motor and controls its output rotation speed and direction. That is, the central controller can control the heating power of the electric heating plate and control the output speed and direction of the drive motor (equivalent to controlling the cycle / frequency and direction of the rotation / self-rotation / up-and-down reciprocating oscillation when mixing drugs). This allows the drug mixing device to adjust the mixing intensity according to the actual situation of the drug to be mixed, so as to ensure the uniformity of drug mixing and / or avoid over-mixing (causing drug denaturation), thereby ensuring the drug's efficacy.
[0019] 3. The present invention provides a drug mixing device for rehabilitation and nursing care. A test tube cap is connected to the open end of the drug storage test tube to prevent accidental spillage of the drug inside during the mixing process. A clamping plate is connected to the central shaft. The clamping plate has several placement grooves that correspond one-to-one with the fixed cylinder. The clamping plate is made of elastic material, and the diameter of the placement grooves is not greater than the outer diameter of the drug storage test tube. When using this mixing device, the lower side of the drug storage test tube is placed in the fixed cylinder, and the upper side is fixedly clamped in the placement groove of the clamping plate, so that it has good stability during the drug mixing process and ensures the functionality and service life of the entire device.
[0020] 4. The present invention provides a drug mixing device for rehabilitation and nursing, wherein several cam grooves are provided on the flange of the cam disk. The output shaft of the drive motor rotates once, and the mixing matrix reciprocates several times under the action of the cam disk and the roller, thereby increasing the frequency of its reciprocating oscillation, that is, increasing the frequency of up and down oscillation during drug mixing. The roller is rotatably connected to the mixing matrix, and the radius of the roller is consistent with the radius of the cam groove, which makes the contact / fit between the roller and the cam disk good, improving the stability and uniformity of the entire device during operation.
[0021] 5. The present invention provides a drug mixing device for rehabilitation and nursing care. The base has a groove, and the mixing substrate has a protrusion that mates with the groove. The protrusion is slidably positioned inside the groove, allowing the mixing substrate to move back and forth linearly relative to the base. The cooperation between the protrusion and the groove guides and limits the movement of both, further improving the uniformity and stability during relative movement and ensuring the functionality of the drug mixing device. The base and the mixing substrate are also connected by a spring, which effectively / accelerates the repositioning of the mixing substrate. Columns are connected to opposite sides of the base and the mixing substrate, with springs sleeved on the outer sides of the columns. The columns guide the deformation of the springs, ensuring their functionality. Two drive motors and two springs are provided, mirror-symmetrically arranged with respect to the vertical center plane of the base. The two drive motors and two springs are intermittently arranged, ensuring uniform and balanced mechanical performance of the entire device during operation, further improving the overall stability of the device. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of a drug mixing device for rehabilitation nursing according to the present invention;
[0023] Figure 2 This is a cross-sectional view of a drug mixing device for rehabilitation nursing according to the present invention;
[0024] Figure 3 for Figure 2 Sectional view of AA;
[0025] Figure 4 for Figure 2 Sectional view of BB;
[0026] Figure 5 for Figure 2 Sectional view of CC;
[0027] Figure 6 for Figure 2 A sectional view of DD.
[0028] The names of the corresponding labels in the attached diagram are:
[0029] 1. Base, 2. Drive motor, 3. Mixing base, 4. Inner spline cylinder, 5. Slide groove, 6. Column, 7. Spring, 8. Main shaft, 9. Drive bevel gear, 10. Cam plate, 11. Central shaft, 12. Fixed gear ring, 13. Roller, 14. Driven bevel gear, 15. Planetary carrier, 16. Sun gear, 17. Clamping plate, 18. Planetary gear, 19. Fixed cylinder, 20. Drug storage tube, 21. Test tube cap, 22. Cap body, 23. Electric heating plate. Detailed Implementation
[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:
[0031] like Figures 1 to 6 As shown, a drug mixing device for rehabilitation nursing includes a base 1 and six drug storage test tubes 20 for holding drugs. The base 1 is connected to a drive motor 2, a mixing base 3, and an inner splined cylinder 4. The mixing base 3 is slidably connected to the base 1, and the inner splined cylinder 4 is rotatably connected to the base 1. The output shaft of the drive motor 2 is fixedly connected to a main shaft 8, and the main shaft 8 is fixedly connected to a drive bevel gear 9 and a cam disc 10. The mixing base 3 is connected to a central shaft 11, a fixed gear ring 12, and a roller 13. The central shaft 11 is rotatably connected to the mixing base 3. The central shaft 11 has an external spline that mates with the internal spline of the inner splined cylinder 4. The spline slides through the inner spline cylinder 4, and the inner spline cylinder 4 is fixedly connected to the driven bevel gear 14 that meshes with the driving bevel gear 9. The roller 13 slides against the flange of the cam disk 10. The central shaft 11 is connected to the planet carrier 15 and the sun gear 16. The sun gear 16 is fixedly connected to the central shaft 11. The planet carrier 15 is rotatably connected to six planet gears 18 that mesh externally with the sun gear 16. The fixed gear ring 12 is fixedly connected to the mixing base 3. All six planet gears 18 mesh internally with the fixed gear ring 12. All six planet gears 18 are connected to a fixed cylinder 19 for fixing six drug storage test tubes 20.
[0032] The base 1 is connected to a cover 22 by a threaded connection on its upper side. The mixing substrate 3 is located inside the cover 22. An electric heating plate 23 is connected to the inner wall of the cover 22. The electric heating plate 23 is electrically connected to a central controller (not shown in the figure) that controls its heating power. The drive motor 2 is a servo motor. The central controller is electrically connected to the drive motor 2 and controls its output rotation speed and rotation direction.
[0033] The open end of the drug storage test tube 20 is detachably connected to a test tube cap 21; the top end of the central shaft 11 is fixedly connected to a clamping plate 17, which has six placement grooves that correspond one-to-one with the fixed cylinder 19; the clamping plate 17 is made of elastic material, and the diameter of the placement grooves is slightly smaller than the outer diameter of the drug storage test tube 20.
[0034] The cam disk 10 is evenly provided with eight cam grooves. The roller 13 is rotatably connected to the mixing substrate 3, and the radius of the roller 13 is the same as the radius of the cam groove. The left and right sides of the base 1 are provided with sliding grooves 5. The left and right sides of the mixing substrate 3 are provided with protrusions that cooperate with the sliding grooves 5. The protrusions are slidably located inside the sliding grooves 5.
[0035] The base 1 and the mixing substrate 3 are connected by a spring 7; a column 6 is connected to the opposite side of the base 1 and the mixing substrate 3, and the spring 7 is sleeved on the outside of the column 6. In addition, there are two drive motors 2 and two springs 7, which are mirror-symmetrically arranged with the vertical center plane of the base 1 as the reference plane, and the two drive motors 2 and two springs 7 are intermittently arranged; the main shaft 8 rotates through the side wall of the base 1, and the spring 7, the drive bevel gear 9 and the cam disk 10 are all located on the inner side of the base 1.
[0036] The specific implementation process is as follows:
[0037] When using this drug mixing device, first rotate the cover 22 to remove it from the base 1, and place the drug to be mixed into the inside of the drug storage tube 20; then fix the lower end of the drug storage tube 20 containing the drug inside the fixing cylinder 19, and snap the upper middle part of the drug storage tube 20 into the placement groove of the clamping plate 17, and fix the tube cover 21 to the opening of the drug storage tube 20; then connect the cover 22 to the base 1 by thread to shield and protect the mixing substrate 3 and the drug storage tube 20; finally, according to the clinical needs of the drug to be mixed, control the operation / heating power of the electric heating plate 23 and the rotation speed and direction of the output shaft of the drive motor 2 through the central controller to mix the drug in the drug storage tube 20.
[0038] The test tube cap 21 is connected to the open end of the drug storage tube 20 to prevent accidental spillage of the drug inside during the mixing process. The lower side of the drug storage tube 20 is placed inside the fixed cylinder 19, and the upper side is fixedly clamped in the placement groove of the clamping plate 17, so that it has good stability during the drug mixing process and ensures the functionality and service life of the entire device.
[0039] Drive motor 2 operates, and drug storage tube 20 rotates (with the axis of the sun gear 16 / central shaft 11 as the center) while also rotating (with the axis of the planetary gear 18 and planetary carrier 15 as the center). Drug storage tube 20 will also swing up and down with the mixing matrix 3 under the action of roller 13 and cam disk 10. Electric heating plate 23 periodically heats the drug (the drug storage tube rotates, and even if the electric heating plate 23 is located on the outside, it can still periodically heat the drug inside), which intensifies the molecular activity between drugs. The four mixing methods (rotation, rotation, swinging, and heating) simultaneously achieve drug mixing, resulting in high mixing efficiency and good uniformity of the mixed drug. The heating power of the electric heating plate 23 is controlled by the central controller, which controls the output speed and rotation direction of the drive motor 2 (equivalent to controlling the cycle / frequency and direction of the rotation / self-rotation / up-and-down reciprocating oscillation when mixing drugs). This allows the drug mixing device to adjust the mixing intensity according to the actual situation of the drug to be mixed, so as to ensure the uniformity of drug mixing and / or avoid over-mixing (causing drug denaturation), thereby ensuring the drug's efficacy.
[0040] In addition, several cam grooves are provided on the flange of the cam disk 10. When the output shaft of the drive motor 2 rotates once, the mixing matrix 3 reciprocates several times under the action of the cam disk 10 and the roller 13, thereby increasing the frequency of its reciprocating oscillation, which in turn increases the frequency of its up-and-down oscillation during drug mixing. The roller 13 is rotatably connected to the mixing matrix 3, and the radius of the roller 13 is consistent with the radius of the cam groove. The contact / fitting effect between the roller 13 and the cam disk 10 is good, which improves the stability and uniformity of the entire device during operation. The base 1 has a groove 5, and the mixing substrate 3 has a protrusion that cooperates with the groove 5. The cooperation between the protrusion and the groove 5 guides and limits the movement of the two (mixing substrate 3 and base 1), improving the uniformity and stability of the two during relative movement and ensuring the functionality of shaking the drug up and down. The base 1 and the mixing substrate 3 are also connected by a spring 7, which can effectively / accelerate the reset of the mixing substrate 3. There are two drive motors 2 and two springs 7. The two drive motors 2 and two springs 7 are mirror-symmetrically arranged with the vertical center plane of the base 1 as the reference plane, and the two drive motors 2 and two springs 7 are intermittently arranged, so that the mechanical performance of the whole device is uniform and balanced during operation, further improving the stability of the whole device.
[0041] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A drug mixing device for rehabilitation and nursing care, characterized in that, The device includes a base and several drug storage tubes. The base is connected to a drive motor, a mixing matrix, and an inner splined cylinder. The mixing matrix is slidably connected to the base, and the inner splined cylinder is rotatably connected to the base. The output shaft of the drive motor is fixedly connected to a main shaft, which is fixedly connected to a drive bevel gear and a cam disc. The mixing matrix is connected to a central shaft, a fixed gear ring, and a roller. The central shaft is rotatably connected to the mixing matrix and has an external spline that mates with the internal spline of the inner splined cylinder. The external spline slides through... An inner splined cylinder is fixedly connected to a driven bevel gear that meshes with the driving bevel gear. The roller slides against the flange of the cam disk. A planetary carrier and a sun gear are connected to the central shaft. The sun gear is fixedly connected to the central shaft. A plurality of planetary gears that mesh externally with the sun gear are rotatably connected to the planetary carrier. A fixed gear ring is fixedly connected to the mixing matrix. All of the planetary gears mesh internally with the fixed gear ring. Each of the planetary gears is connected to a fixed cylinder for fixing the drug storage test tube.
2. The drug mixing device for rehabilitation nursing according to claim 1, characterized in that, The base is detachably connected to a cover, and the hybrid substrate is located on the inside of the cover.
3. The drug mixing device for rehabilitation nursing according to claim 2, characterized in that, An electric heating plate is connected to the inner wall of the cover.
4. The drug mixing device for rehabilitation nursing according to claim 3, characterized in that, The electric heating plate is electrically connected to a central controller that controls its heating power; the drive motor is a servo motor, and the central controller is electrically connected to the drive motor and controls its output rotation speed and rotation direction.
5. A drug mixing device for rehabilitation nursing according to claim 1, characterized in that, The open end of the drug storage test tube is detachably connected to a test tube cap.
6. The drug mixing device for rehabilitation nursing according to claim 1, characterized in that, The central shaft is also connected to a clamping plate, which has several placement grooves that correspond one-to-one with the fixed cylinder; the clamping plate is made of elastic material, and the diameter of the placement groove is not greater than the outer diameter of the drug storage tube.
7. A drug mixing device for rehabilitation nursing according to claim 1, characterized in that, The cam disk is evenly provided with a plurality of cam grooves, the roller is rotatably connected to the mixing matrix, and the radius of the roller is the same as the radius of the cam groove.
8. A drug mixing device for rehabilitation nursing according to claim 1, characterized in that, The base has a groove, and the hybrid substrate has a protrusion that cooperates with the groove. The protrusion is slidably disposed on the inner side of the groove.
9. A drug mixing device for rehabilitation nursing according to claim 1, characterized in that, The base and the hybrid substrate are also connected by a spring; the opposite sides of the base and the hybrid substrate are each connected to a column, and the spring is sleeved on the outside of the column.
10. A drug mixing device for rehabilitation nursing according to claim 9, characterized in that, The drive motor and spring are provided in pairs. The two drive motors and the two springs are respectively mirror-symmetrically arranged with the vertical center plane of the base as the reference plane, and the two drive motors and the two springs are intermittently arranged. The main shaft rotates through the side wall of the base, and the spring, the active bevel gear and the cam disk are all located on the inner side of the base.