An auxiliary positioner for extracting medication
By designing the guide and clamping components of the auxiliary positioner, the problem of syringe needles being difficult to accurately pierce the weak area of the rubber stopper of the vial was solved, achieving precise needle positioning and safe use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE SECOND AFFILIATED HOSPITAL TO NANCHANG UNIV
- Filing Date
- 2025-03-24
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, syringe needles are difficult to accurately pierce the weak areas of the rubber stopper of vials, causing the needles to become blunt or damaged, which may lead to drug leakage or patient injury.
An auxiliary positioner was designed, including two mounting plates, a guide, and a clamping assembly. The needle is guided by the conical inner cavity of the guide to ensure that the needle accurately pierces the weak area of the rubber stopper. The curved plate and the adjustment assembly are used to adapt to different vial sizes and avoid rigid contact between the needle and the guide.
This allows for precise insertion of the syringe needle into the weak area of the rubber stopper, preventing needle damage and ensuring safe drug dispensing and injection.
Smart Images

Figure CN224585069U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of medical devices, and in particular to an auxiliary locator for extracting drugs. Background Technology
[0002] In the medical workplace, it is necessary to remove medication from vials using a syringe or inject medication into vials using a syringe.
[0003] A vial typically consists of a rubber stopper and a bottle body. The rubber stopper has a weak area in the middle to allow the syringe needle to penetrate the vial. However, during manual operation, the syringe needle often fails to accurately pierce the weak area of the rubber stopper, causing the syringe needle to become blunt or damaged. When the syringe containing the medication is subsequently injected into the patient, it can easily cause drug leakage or harm to the patient. Utility Model Content
[0004] Based on this, the purpose of this utility model is to provide an auxiliary positioning device for extracting drugs, which enables the needle of the syringe to accurately pierce the weak area of the rubber stopper.
[0005] This utility model provides the following technical solution: an auxiliary locator for extracting drugs, including two mounting plates, namely a first mounting plate and a second mounting plate, each of the two mounting plates having a through hole in the middle, a guide member provided at the through hole of the first mounting plate, the guide member having a tapered inner cavity with a diameter gradually decreasing from top to bottom, and the upper and lower ends of the inner cavity being open, and a plurality of clamping components provided between the two mounting plates, the plurality of clamping components being arranged around the axis of the inner cavity;
[0006] The clamping assembly includes an elastic arc-shaped piece and a locking unit that fixes the two ends of the arc-shaped piece to the two mounting plates respectively.
[0007] The auxiliary positioner also includes an adjustment component for maintaining the arc-shaped piece at a certain bending arc.
[0008] Furthermore, the two ends of the arc-shaped piece are slidably connected to the two mounting plates respectively.
[0009] Furthermore, each of the two mounting plates has sliding holes corresponding to the number of clamping components, and the two ends of the arc-shaped piece are slidably connected to the two mounting plates through the corresponding sliding holes.
[0010] Furthermore, the locking unit includes a baffle plate disposed at the end of the arc-shaped piece, the baffle plate abutting against the outer surface of the sliding hole, a bolt disposed on the baffle plate, the bolt passing through the sliding hole and threadedly connected to a first nut, the end face of the first nut abutting against the outer surface of the sliding hole opposite to the baffle plate.
[0011] Furthermore, the first nut is a first wing nut.
[0012] Furthermore, the clamping assembly also includes scales respectively set on the two mounting plates, the scales being positioned close to the sliding hole, and an indicator set on the baffle, the indicator cooperating with the scales to display the distance the arc-shaped piece moves within the sliding hole.
[0013] Furthermore, the adjustment assembly includes a plurality of guide rods and a plurality of screws, as well as a second nut corresponding to the number of screws; the guide rods are fixedly connected to the first mounting plate, the second mounting plate is slidably connected to the guide rods, the screws are fixedly connected to the first mounting plate, and one end of the screw passes through the second mounting plate and is threadedly connected to the second nut, the end face of the second nut abutting against the lower surface of the second mounting plate.
[0014] Furthermore, the guide rod and the screw are provided with support feet at the ends away from the first mounting plate.
[0015] The beneficial effects of this utility model are as follows: the vial is clamped and positioned by the arc-shaped plate, so that the weak area of the vial's rubber stopper is located directly below the lower port of the guide. This allows the syringe needle to penetrate the weak area of the rubber stopper through the lower port of the guide. The inner cavity of the guide has a conical structure. When the needle contacts the inner cavity of the guide, the guide will also guide the needle to slide towards the lower port of the guide, avoiding rigid contact between the needle and the guide, which could damage the needle. This allows the syringe needle to accurately penetrate the weak area of the rubber stopper. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0017] Figure 2 This is a three-dimensional structural diagram of the clamping component of this utility model.
[0018] Figure 3 This is a three-dimensional structural diagram of the locking unit of this utility model.
[0019] Figure 4 This is a first-view three-dimensional structural diagram of the adjustment component of this utility model.
[0020] Figure 5This is a two-dimensional structural diagram of the adjustment component of this utility model from a second perspective.
[0021] The labels in the attached diagram are as follows: 1-first mounting plate, 2-guide element, 3-inner cavity, 4-second mounting plate, 41-through hole, 5-clamping assembly, 51-sliding hole, 52-arc plate, 53-locking unit, 531-baffle, 532-bolt, 533-first wing nut, 54-scale, 55-indicator element, 6-adjustment assembly, 61-guide rod, 62-screw, 63-support leg, 64-second wing nut. Detailed Implementation
[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.
[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0025] An auxiliary locator for drug extraction, such as Figure 1 As shown, the device includes two mounting plates, namely a first mounting plate 1 and a second mounting plate 4. Both mounting plates have through holes 41 in the middle. A guide member 2 is provided at the through hole 41 of the first mounting plate 1. The guide member 2 has a tapered inner cavity 3 with a diameter that gradually decreases from top to bottom. The upper and lower ends of the inner cavity 3 are open. A plurality of clamping components 5 are provided between the two mounting plates. The plurality of clamping components 5 are arranged around the axis of the inner cavity 3.
[0026] The two mounting plates are square with rounded corners and a circular through hole 41 in the middle. The guide 2 is fixedly connected to the lower side of the first mounting plate 1. It is funnel-shaped and has a tapered inner cavity 3 that gradually decreases in diameter from top to bottom. The upper and lower ends of the inner cavity 3 are open. The upper port of the inner cavity 3 is connected to the through hole 41 on the first mounting plate 1. The diameter of the upper port of the inner cavity 3 is preferably 2 cm, the diameter of the lower port is preferably 2-3 mm, and the overall height is 1.5 cm. When the syringe needle passes through the lower port and pierces into the vial, the connection between the syringe needle and the syringe container will be restricted to the lower part of the inner cavity 3 of the guide 2, while the syringe needle completely passes through the lower port of the inner cavity 3. Multiple clamping components 5 are used to fix the vial. In this embodiment, four sets of clamping components 5 are provided. In other embodiments, the number can be increased or decreased appropriately, with a minimum of two sets to clamp and fix the vial.
[0027] The clamping assembly 5 specifically includes an elastic arc-shaped piece 52 and a locking unit 53 that fixes the two ends of the arc-shaped piece 52 to the two mounting plates respectively.
[0028] The arc-shaped piece 52 is made of a nickel-based high-elasticity alloy, such as 3J31 elastic alloy, 3J32 elastic alloy, as well as Monel alloy, Inconel alloy, Nimonic alloy, etc. It can withstand high temperature and has good corrosion resistance and oxidation resistance. The elasticity of the arc-shaped piece 52 is used to clamp and fix the vial.
[0029] like Figure 4 As shown, the auxiliary positioner also includes an adjustment component 6 for maintaining the arc-shaped piece 52 at a certain bending arc. In this embodiment, the adjustment component 6 specifically includes a plurality of guide rods 61 and a plurality of screws 62, as well as a second nut corresponding to the number of screws 62. The guide rods 61 are fixedly connected to the first mounting plate 1, the second mounting plate 4 is slidably connected to the guide rods 61, the screws 62 are fixedly connected to the first mounting plate 1, and one end of the screw 62 passes through the second mounting plate 4 and is threadedly connected to the second nut. The end face of the second nut abuts against the lower surface of the second mounting plate 4.
[0030] In this embodiment, there are two guide rods 61 and two screws 62. In other embodiments, the number may be increased or decreased as appropriate, and no limitation is made here. The two guide rods 61 are symmetrically arranged, and the two screws 62 are also symmetrically arranged. The two guide rods 61 allow the second mounting plate 4 to slide back and forth stably. The two screws 62 allow the second nut to push the second mounting plate 4 to slide on the guide rods 61 when the second nut is rotated. The second nut is preferably a wing nut, which is referred to as the second wing nut 64 in the accompanying drawings.
[0031] It is understandable that when the operator needs to remove or insert medication from the vial, the auxiliary positioner of this solution can be used. First, the vial is passed through the through hole 41 of the second mounting plate 4, so that the vial is placed between the four arc-shaped pieces 52. The four arc-shaped pieces 52 will clamp and position the vial, so that the weak area of the vial's rubber stopper is located directly below the lower port of the guide 2. Then, the operator can take out the syringe and let the syringe needle pass through the lower port of the guide 2 and pierce into the weak area of the rubber stopper. The inner cavity 3 of the guide 2 has a conical structure. When the needle contacts the inner cavity 3 of the guide 2, the guide 2 will also guide the needle to slide towards the lower port of the guide 2, avoiding rigid contact between the needle and the guide 2, which would cause damage to the needle. After the syringe needle pierces the vial, the operator can use the syringe to remove or inject medication.
[0032] Furthermore, in order to accommodate different sizes of vials or to adjust the clamping force of the curved plate 52, this embodiment provides an adjustment component 6 so that the curved plate 52 can be kept at a certain bending curvature according to different bottle bodies;
[0033] It is understood that the operator can simultaneously rotate the second wing nut 64 on both screws 62 in the opposite direction. The second wing nut 64 will move downward on the screw 62. At this time, the arc plate 52 will slowly loosen, and the bending angle of the arc plate 52 will decrease, thereby increasing the space between the four arc plates 52 to accommodate larger vials, so that this auxiliary positioner can adapt to larger vials. Conversely, the operator can also rotate the second wing nut 64 in the forward direction, so that the second wing nut 64 pushes the second mounting plate 4 upward, so that the second mounting plate 4 squeezes the arc plate 52, thereby reducing the space between the four arc plates 52, so that the four arc plates 52 can clamp and fix smaller vials.
[0034] In this embodiment, as Figure 2 and Figure 3 As shown, each of the two mounting plates has sliding holes 51 corresponding to the number of clamping components 5. The two ends of the arc-shaped piece 52 are slidably connected to the two mounting plates through the corresponding sliding holes 51. The locking unit 53 includes a baffle 531 provided at the end of the arc-shaped piece 52. The baffle 531 abuts against the outer surface of the sliding hole 51. A bolt 532 is provided on the baffle 531. The bolt 532 passes through the sliding hole 51 and is threadedly connected to a first nut. The end face of the first nut abuts against the outer surface of the sliding hole 51 opposite to the baffle 531.
[0035] The baffle 531 is circular in shape, and the diameter of the baffle 531 is larger than the width of the sliding hole 51 to prevent the baffle 531 from passing through the sliding hole 51. The first nut is preferably a first wing nut 533.
[0036] It is understandable that the above-mentioned specific structure was designed to allow this auxiliary positioner to further adapt to vials of different sizes. First, when the positioner needs to adapt to larger vials, the operator can simultaneously loosen the first wing nut 533 on the clamping assembly 5. At this time, the arc-shaped piece 52 is in a movable state. Then, the operator pushes the arc-shaped piece 52 outward, thereby increasing the space between the four arc-shaped pieces 52 to accommodate larger vials. After adjusting the position of the arc-shaped piece 52, the operator can rotate the first wing nut 533 to press the wing nut against the surface of the second mounting plate 4, thereby fixing the arc-shaped piece 52. Conversely, when it is necessary to adapt to smaller vials, the operator loosens the first wing nut 533 and pushes the arc-shaped pieces 52 towards each other, thereby reducing the space between the arc-shaped pieces 52 to facilitate clamping smaller vials. After adjustment, the first wing nut 533 is tightened.
[0037] Furthermore, such as Figure 3 As shown, the clamping assembly 5 also includes scales 54 respectively provided on the two mounting plates, the scales 54 being provided close to the sliding hole 51, and an indicator 55 provided on the baffle 531, the indicator 55 cooperating with the scales 54 to display the distance the arc-shaped piece 52 moves within the sliding hole 51.
[0038] It is understandable that, in order to ensure that the four arc-shaped pieces 52 move the same distance within the sliding hole 51, the operator can determine this by observing the indicator 55 and the scale 54 markings, thus avoiding inconsistent movement positions of the four arc-shaped pieces 52, which could lead to a deviation between the weak area of the vial and the lower port of the guide 2.
[0039] Furthermore, such as Figure 5 As shown, the guide rod 61 and the screw 62 are provided with support feet 63 at the ends away from the first mounting plate 1.
[0040] It is understandable that when the vial is placed between the curved plates 52, the operator can make the support leg 63 contact the fixed platform, such as the ground or tabletop. The diameter of the support leg 63 is larger than the diameter of the guide rod 61 and the screw 62, so that the entire positioner is placed on the fixed platform for easy operation. The support leg 63 can be made of rubber or other materials to prevent slippage.
[0041] In other embodiments, the adjustment component 6 includes a plurality of guide rods 61, preferably four guide rods 61 distributed on the four sides of the second mounting plate 4, and the second mounting plate 4 is fixedly connected to the guide rods 61. The lower surface of the first mounting plate 1 is fixedly connected to the upper end surface of the guide rods 61, thereby keeping the bending curvature of the arc-shaped piece 52 constant. This embodiment does not have the function of adjusting the up and down position of the second mounting plate 4.
[0042] In other embodiments, the locking unit 53 can be directly fixed to the two ends of the arc-shaped piece 52 by welding, or it can be fixed by bolts 532.
[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An auxiliary locator for use in extracting medication, the locator comprising: The device includes two mounting plates, namely a first mounting plate and a second mounting plate, each with a through hole in the middle. A guide is provided at the through hole of the first mounting plate. The guide has a tapered inner cavity with a diameter that gradually decreases from top to bottom, and the upper and lower ends of the inner cavity are open. The device also includes multiple clamping components arranged between the two mounting plates, with the multiple clamping components arranged around the axis of the inner cavity. The clamping assembly includes an elastic arc-shaped piece and a locking unit that fixes the two ends of the arc-shaped piece to the two mounting plates respectively. The auxiliary positioner also includes an adjustment component for maintaining the arc-shaped piece at a certain bending arc.
2. The auxiliary positioner of claim 1, wherein, The two ends of the arc-shaped piece are slidably connected to the two mounting plates respectively.
3. The auxiliary positioner of claim 2, wherein, Both mounting plates are provided with sliding holes corresponding to the number of clamping components, and the two ends of the arc-shaped piece are slidably connected to the two mounting plates through the corresponding sliding holes.
4. The auxiliary positioner of claim 3, wherein, The locking unit includes a baffle plate disposed at the end of the arc-shaped piece, the baffle plate abutting against the outer surface of the sliding hole, a bolt disposed on the baffle plate, the bolt passing through the sliding hole and threadedly connected to a first nut, the end face of the first nut abutting against the outer surface of the sliding hole opposite to the baffle plate.
5. The auxiliary positioner of claim 4, wherein, The first nut is a first wing nut.
6. The auxiliary locator according to claim 4, characterized in that, The clamping assembly also includes scales respectively set on the two mounting plates, the scales being positioned close to the sliding hole, and an indicator set on the baffle, the indicator cooperating with the scales to display the distance the arc-shaped piece moves within the sliding hole.
7. The auxiliary positioner of claim 1, wherein, The adjustment assembly includes a plurality of guide rods and a plurality of screws, and a second nut corresponding to the number of screws; the guide rods are fixedly connected to the first mounting plate, the second mounting plate is slidably connected to the guide rods, the screws are fixedly connected to the first mounting plate, and one end of the screw passes through the second mounting plate and is threadedly connected to the second nut, the end face of the second nut abutting against the lower surface of the second mounting plate.
8. The auxiliary positioner of claim 7, wherein, The guide rod and the screw are provided with support feet at their ends away from the first mounting plate.