Handheld medicine mixing device for intravenous administration center

Abstract

The invention relates to a handheld medicine mixing device for an intravenous administration center, which comprises a cup base, a plurality of limiting columns are arranged in the middle of the side surface of the inner wall of the cup base, a limiting ring is arranged on the joint of the plurality of limiting columns, the cup base is provided with an annular slideway, a sliding piece is arranged in an inner cavity of the cup base, and the lower surface of the sliding piece is attached to the surface of the annular slideway. The outer surface of the lower column body is attached to the inner side of the limiting ring, a column groove is formed in the upper portion of the lower column body, the upper end of the lower column body is connected with one end of the upper column body, the upper column body is provided with a fixing sliding block, a groove is formed in the lower portion of the fixing sliding block, and a whole formed by the sliding piece, the lower column body, the upper column body, the elastic ring and the fixing sliding block is in an inclined state. The powder medicine in the penicillin bottle can be promoted to form vortexes in the dissolving process of a solvent, meanwhile, upper-layer liquid and lower-layer liquid can be fully exchanged, dissolving of the powder medicine is promoted, and the problem that the hands of medicine dispensing personnel are acerbity due to oscillation in different directions is solved.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and particularly relates to a handheld drug mixing device for a static drug admixture center. Background Art

[0002] Medical powder is one of the common dosage forms of medicine bottles in clinical practice. Powdered medicine has a long shelf life, a slow degradation rate, and is not easily inactivated. For example, anti-inflammatory drugs, etc. Since the dispensing process of vials can achieve fully enclosed operation and will not be polluted by the external environment, the prepared drugs have high quality. Vials are common containers for medical powder, and powdered vials are common drug types.

[0003] The application of powdered vial drugs generally involves injecting solvents such as glucose and normal saline into the vial containing the powder. After fully mixing, the dissolved liquid drug is then drawn out. However, for some powdered drugs, due to their solubility or insufficient mixing, it is difficult to completely dissolve. Therefore, in order to fully mix, the dispensing personnel need to repeatedly oscillate, such as horizontally oscillating to form a vortex of the liquid in the vial due to inertia, or vertically inverting or longitudinally oscillating to fully exchange the upper liquid and the lower liquid. Multiple oscillations are required to promote the full dissolution of the powdered drug. Oscillations in different directions are likely to cause soreness in the hands of the dispensing personnel. Therefore, a new technology is needed to improve this solution. Summary of the Invention

[0004] Aiming at the problems in the above-mentioned prior art, the present invention provides a handheld drug mixing device for a static drug admixture center, which can promote the formation of a vortex during the dissolution process of powdered vial drugs when adding a solvent, and at the same time, the upper liquid and the lower liquid can be fully exchanged, promoting the dissolution of the powdered drug vial and reducing the problem of soreness in the hands of the dispensing personnel caused by oscillations in different directions.

[0005] The present invention is implemented through the following technical solutions: A handheld drug mixing device for a static drug admixture center includes a cup base. The cup base and the inner cavity of the cup base are both cylinders. A plurality of limiting columns are circumferentially arranged in an array at the middle part of the inner side surface of the cup base. The ends of the plurality of limiting columns are jointly connected to form a limiting ring, and the inner side of the limiting ring has an arc-shaped profile; The bottom of the inner wall of the cup base is provided with an annular slideway, and the cross-section of the annular slideway is a concave arc-shaped profile, and the concave arc-shaped profile is a semi-circular profile; A sliding member is arranged in the inner cavity of the cup base. The sliding member has a spherical profile. The lower surface of the sliding member is attached to the surface of the annular slideway. The upper part of the sliding member is connected to the lower part of a lower cylinder. The outer surface of the lower cylinder is attached to the inner side of the limiting ring. The upper part of the lower cylinder is a hollow structure, and the hollow structure is a column groove, and the upper part of the column groove communicates with the outside; The upper end of the lower cylinder is connected to one end of the upper cylinder. An elastic ring is provided on the joint surface between the lower end of the upper cylinder and the upper end of the lower cylinder. The outer wall of the elastic ring forms an interference fit with the inner wall of the upper part of the cylinder groove. The lower cylinder is tightly connected to the upper cylinder through the interference fit formed by the outer wall of the elastic ring and the inner wall of the upper part of the cylinder groove; The other end of the upper cylinder is provided with a fixed slider. A groove is provided at the lower part of the fixed slider. The groove has an arc-shaped contour. The radian of the arc-shaped contour is the same as the radian of the side wall contour of the cup holder. The inner wall of the groove fits with the surface of the cup rim of the cup holder to form a clearance fit; The whole formed by the slider, the lower cylinder, the upper cylinder, the elastic ring and the fixed slider is in an inclined state. The position where the outer surface of the lower cylinder is in contact with the inner side of the limit ring is at the middle and lower part of the whole formed by the slider, the lower cylinder, the upper cylinder and the fixed slider. The total mass of the whole formed by the upper part of the lower cylinder, the upper cylinder, the elastic ring and the fixed slider is m1, and the total mass of the whole formed by the lower part of the lower cylinder and the slider is m2, and m1 > m2.

[0006] Furthermore, the fixed slider is of a partial spherical structure.

[0007] Furthermore, the inner wall of the groove, the cup rim of the cup holder, the annular slideway and the surface of the slider are all in a smooth state.

[0008] Furthermore, the inner wall of the cylinder groove forms an interference fit with the body of the vial.

[0009] Furthermore, the fixed slider and the upper cylinder are made of metal material, the lower cylinder and the slider are made of plastic material, and the elastic ring is made of silica gel material.

[0010] Beneficial effects: Under the action of the inertial force of lateral oscillation in the present invention, the liquid medicine in the vial limited in the cylinder groove forms a vortex. At the same time, the whole formed by the slider, the lower cylinder, the upper cylinder, the elastic ring and the fixed slider is in an inclined state, so that the medicine in the vial fixed in the cylinder groove is in a continuously inclined state. Due to the inertial force and the limiting effect of the limit ring, the slider and the fixed slider move in a circular motion in the opposite direction on the same side. The liquid medicine in the vial is in an inclined rotational oscillation state. One lateral oscillation can make the vial rotate and oscillate obliquely for multiple circles, promoting the longitudinal oscillation of the liquid medicine, enabling the upper liquid and the lower liquid to be fully exchanged, promoting the dissolution of the powder medicine, and reducing the soreness of the hands of the dispensing personnel caused by oscillations in different directions. Description of the Drawings

[0011] Figure 1 It is the overall three-dimensional view of an embodiment of the present invention; Figure 2Overall sectional view of an embodiment of the present invention; Figure 3 Top view of the cup holder of an embodiment of the present invention; Figure 4 Overall three-dimensional view formed by the lower cylinder and the sliding part of an embodiment of the present invention; Figure 5 Overall three-dimensional view formed by the upper cylinder, the elastic ring and the fixed slider of an embodiment of the present invention; Figure 6 Bottom view of the overall structure formed by the upper cylinder, the elastic ring and the fixed slider of an embodiment of the present invention; Figure 7 Longitudinal sectional view of the fixed slider of an embodiment of the present invention; Figure 8 Enlarged view of the column groove with a vial containing liquid medicine installed in an embodiment of the present invention.

[0012] In the figure: 1 - cup holder; 1a - annular slideway; 1b - limiting post; 1c - limiting ring; 2 - lower cylinder; 2a - sliding part; 2b - column groove; 6 - upper cylinder; 6a - elastic ring; 7 - fixed slider; 7a - groove; vial - 4; liquid medicine - 4a. Detailed implementation manners

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0014] A handheld drug mixing device for a static drug admixture center, as Figures 1-8 shown, includes a cup holder 1. The inner cavity of the cup holder 1 is a cylinder. Four limiting posts 1b are arranged in a circumferential array in the middle of the inner wall side of the cup holder 1. The ends of the four limiting posts 1b are jointly connected to form a limiting ring 1c, and the inner side of the limiting ring 1c has an arc-shaped profile.

[0015] In this embodiment, an annular slideway 1a is provided at the bottom of the inner wall of the cup holder 1. The cross-section of the annular slideway 1a is an inwardly concave arc-shaped profile, and the inwardly concave arc-shaped profile is a semi-circular profile. A sliding part 2a is arranged in the inner cavity of the cup holder 1. The sliding part 2a has a spherical profile. The lower surface of the sliding part 2a is attached to the surface of the annular slideway 1a. When the whole device is subjected to inertial force, the sliding part 2a can move in a circular motion on the annular slideway 1a.

[0016] In this embodiment, the upper part of the sliding part 2a is connected to the lower part of the lower cylinder 2. The outer surface of the lower cylinder 2 is attached to the inner side of the limiting ring 1c. The upper part of the lower cylinder 2 is a hollow structure, and the hollow structure is a column groove 2b. The column groove 2b is used to fix the vial. The upper part of the column groove 2b communicates with the outside, which is convenient for placing the vial.

[0017] In this embodiment, the upper end of the lower cylinder 2 is connected to one end of the upper cylinder 6. An elastic ring 6a is provided on the joint surface between the lower end of the upper cylinder 6 and the upper end of the lower cylinder 2. The outer wall of the elastic ring 6a forms a transitional fit with the inner wall of the upper part of the column groove 2b. The lower cylinder 2 is tightly connected to the upper cylinder 6 through the transitional fit formed by the outer wall of the elastic ring 6a and the inner wall of the upper part of the column groove 2b.

[0018] In this embodiment, a fixed slider 7 is provided at the other end of the upper cylinder 6. A groove 7a is provided at the lower part of the fixed slider 7. The groove 7a has an arc-shaped contour, and the radian of the arc-shaped contour is the same as the radian of the side wall contour of the cup holder 1. The inner wall of the groove 7a fits with the surface of the cup rim of the cup holder 1 to form a clearance fit.

[0019] In this embodiment, the whole formed by the slider 2a, the lower cylinder 2, the upper cylinder 6, the elastic ring 6a, and the fixed slider 7 is in an inclined state, so that the liquid medicine in the vial fixed in the column groove 2b is in a continuous inclined state. Due to the inertial force and the limiting effect of the limiting ring 1c, the slider 2a and the fixed slider 7 perform circular motions in the same direction on the opposite sides. The liquid medicine in the vial is in an inclined rotational oscillation state, promoting the up-and-down oscillation mixing of the liquid medicine.

[0020] In this embodiment, the position where the outer surface of the lower cylinder 2 is in contact with the inner side of the limiting ring 1c is at the middle and lower part of the whole formed by the slider 2a, the lower cylinder 2, the upper cylinder 6, and the fixed slider 7. When the whole device is subjected to inertial force, the whole formed by the slider 2a, the lower cylinder 2, the upper cylinder 6, and the fixed slider 7 performs a rotational motion after being limited by the limiting ring 1c. The slider 2a and the fixed slider 7 perform circular motions in the same direction on the opposite sides. Since the circular motion radius R1 of the fixed slider 7 > the circular motion radius of the slider 2a, the limiting ring 1c is at the middle and lower part of the whole formed by the slider 2a, the lower cylinder 2, the upper cylinder 6, and the fixed slider 7.

[0021] In this embodiment, the total mass of the whole formed by the upper part of the lower cylinder 2, the upper cylinder 6, the elastic ring 6a, and the fixed slider 7 is m1, and the total mass of the whole formed by the lower part of the lower cylinder 2 and the slider 2a is m2, where m1 > m2. Since the limiting ring 1c is at the middle and lower part of the whole formed by the slider 2a, the lower cylinder 2, the upper cylinder 6, and the fixed slider 7, the inertial force received by the fixed slider 7 is greater than the inertial force received by the slider 2a. In order to make the device system in a stable state, making m1 > m2 can increase the centripetal pulling force to make the whole device tend to be stable.

[0022] Under the action of the inertial force of the lateral oscillation, the liquid medicine in the vial limited in the column groove 2b forms a vortex. At the same time, the whole formed by the sliding member 2a, the lower column body 2, the upper column body 6, the elastic ring 6a, and the fixed slider 7 is in an inclined state, so that the liquid medicine in the vial fixed in the column groove 2b is in a continuous inclined state. Due to the inertial force and the limiting effect of the limiting ring 1c, the sliding member 2a and the fixed slider 7 make circular motions in the same direction on the opposite sides. The liquid medicine in the vial is in an inclined rotational oscillation state, promoting the longitudinal oscillation mixing of the liquid medicine. One lateral oscillation can make the vial rotate and oscillate obliquely for multiple circles, enabling the upper liquid and the lower liquid to be fully exchanged, promoting the dissolution of the drug, and avoiding the problem of hand soreness caused by oscillations in different directions to the dispensing personnel.

[0023] In this embodiment, the fixed slider 7 is of a partial spherical structure. The inner wall of the groove 7a, the cup edge of the cup holder 1, the annular slideway 1a, and the surface of the sliding member 2a are all in a smooth state, reducing the frictional loss during rotation and increasing the number of turns of the whole formed by the sliding member 2a, the lower column body 2, the upper column body 6, the elastic ring 6a, and the fixed slider 7 when the device oscillates once.

[0024] In this embodiment, the inner wall of the column groove 2b and the vial body form a transition fit so that the vial can be tightly embedded in the column groove 2b, avoiding the vial moving in the column groove 2b due to oscillation. The fixed slider 7 and the upper column body 6 are made of metal, the lower column body 2 and the sliding member 2a are made of plastic, and the elastic ring 6a is made of silica gel.

[0025] The working process of this embodiment is as follows: S1: Place the whole formed by the lower column body 2 and the sliding member 2a at the center of the bottom of the cup holder 1. The whole formed by the lower column body 2 and the sliding member 2a is placed longitudinally, and the powder vial liquid medicine injected with the solvent is added into the column groove 2b. S2: Snap the elastic ring 6a into the inner wall of the column groove 2b. Through the transition fit between the outer wall of the elastic ring 6a and the upper inner wall of the column groove 2b, the lower column body 2 is tightly connected to the upper column body 6 through the transition fit between the outer wall of the elastic ring 6a and the upper inner wall of the column groove 2b. S3: Snap the groove 7a of the fixed slider 7 onto the cup edge of the cup holder 1. At the same time, the lower part of the sliding member 2a is in contact with the surface of the annular slideway 1a, and the whole formed by the sliding member 2a, the lower column body 2, the upper column body 6, the elastic ring 6a, and the fixed slider 7 is in an inclined state. S4: Oscillate the whole device laterally. The liquid medicine forms a vortex due to the inertial force. At the same time, due to the inertial force and the limiting effect of the limiting ring 1c, the sliding member 2a and the fixed slider 7 make circular motions in the same direction on the opposite sides. The liquid medicine in the vial is in an inclined rotational oscillation state, promoting the up-and-down oscillation mixing of the liquid medicine. S5: Apply a longitudinal force to the fixed slider 7 to disengage the groove 7a from the cup rim, and at the same time disengage the outer wall of the elastic ring 6a from the upper inner wall of the column groove 2b. The upper column body 6 and the lower column body 2 are in a disconnected state, and the vial in the column groove 2b is taken out.

[0026] It should be noted that the terms used in this embodiment are only for convenience in describing this embodiment and do not limit the use of this embodiment. Unless otherwise specifically stated, the parts and implementation steps and dimensions shown in these embodiments do not limit the scope of this embodiment. In this embodiment, it should be known that there are differences between the dimensions of the various parts described in the drawings and the actual dimensions and ratios.

[0027] The above is only one of the preferred embodiments of the present invention and does not make a formal limitation to the present invention. It should be understood that for the technologies, methods and devices known to those of ordinary skill in the relevant fields, they may not be discussed in detail, but under appropriate circumstances, the technologies, methods and devices should be regarded as part of the authorization specification. Within the scope of the features defined by the claims, they should all be included in the protection scope of the present invention.

Claims

1. A handheld drug mixing device for a static preparation center, characterized in that: A cup holder is included, wherein the cup holder and the inner cavity of the cup holder are both cylindrical, a plurality of limiting posts are arranged in a circular array in the middle of the inner wall side of the cup holder, and the ends of the plurality of limiting posts are connected together to form a limiting ring, and the inner side of the limiting ring is an arc-shaped contour; an annular slide is arranged at the bottom of the inner wall of the cup holder, and the cross section of the annular slide is an inwardly concave arc-shaped contour, and the inwardly concave arc-shaped contour is a semicircular contour; a sliding piece is arranged in the inner cavity of the cup holder, and the sliding piece is a spherical contour, the lower surface of the sliding piece is fitted with the surface of the annular slide, the upper part of the sliding piece is connected with the lower part of the lower cylinder, the outer surface of the lower cylinder is in contact with the inner side of the limiting ring, the upper part of the lower cylinder is a hollow structure, and the hollow structure is a column groove, and the upper part of the column groove is connected with the outside; The upper end of the lower column is connected with one end of the upper column, and an elastic ring is provided on the connecting surface between the lower end of the upper column and the upper end of the lower column, and the outer wall of the elastic ring forms a transition fit with the upper inner wall of the column groove, and the lower column is tightly connected with the upper column through the outer wall of the elastic ring and the upper inner wall of the column groove forming a transition fit; A fixed slider is provided at the other end of the upper cylinder, and a groove is provided at the lower part of the fixed slider. The groove has an arc-shaped profile, and the curvature of the arc-shaped profile is consistent with the curvature of the side wall profile of the cup holder. The inner wall of the groove fits with the cup edge surface of the cup holder to form a clearance fit; The whole formed by the sliding piece, the lower column, the upper column, the elastic ring and the fixed slider is in an oblique state, and the place where the outer surface of the lower column and the inner side of the limit ring are in contact is located in the lower middle part of the whole formed by the sliding piece, the lower column, the upper column and the fixed slider. The total mass of the whole formed by the upper part of the lower column, the upper column, the elastic ring and the fixed slider is m1, and the total mass of the whole formed by the lower part of the lower column and the sliding piece is m2, and m1>m2.

2. A handheld drug mixing device for a static preparation center according to claim 1, characterized in that: The fixed sliding block is a partial spherical structure.

3. The handheld drug mixing device for a static preparation center according to claim 1, characterized in that: The inner wall of the groove, the cup edge of the cup seat, the annular slideway and the surface of the slide are all in a smooth state.

4. The handheld drug mixing device for intravenous preparation center according to claim 1, characterized in that: The inner wall of the column groove forms a transition fit with the body of the vial.

5. The handheld drug mixing device for intravenous preparation center according to claim 1, characterized in that: The fixed slider and the upper column are made of metal, the lower column and the sliding piece are made of plastic, and the elastic ring is made of silicone.

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