Drug Adaptor

Abstract

The present invention relates to a drug adapter, which includes a cover body, an interface, and a puncture needle; inside the cover body is a medicine bottle cap accommodating cavity; a puncture needle is provided inside the cover body; an interface is provided outside the cover body; the puncture needle is provided with a slotted groove, and a channel is provided in the middle of the interface, and the slotted groove communicates with the channel; the interface is adapted to a Luer interface; on the side wall of the cover body, a positioning mechanism and a locking mechanism are provided; the positioning mechanism includes positioning bumps; the locking mechanism includes locking hooks. The present invention improves the puncture needle, and the positioning mechanism and the locking mechanism provided on the wall surface of the cover body; the puncture needle can reduce the puncture resistance and avoid puncture debris; the positioning mechanism improves the positioning accuracy of the cover body relative to the medicine bottle cap; the locking mechanism can reliably fix the cover body on the medicine bottle and prevent it from falling off during use.

Description

Technical Field

[0001] The present invention relates to an adapter device for transferring drugs in a medicine bottle. Background Art

[0002] In current medicine bottles, the effective drug amount tends to decrease to meet the requirement of a single dose. In the current conventional operation, a syringe with a needle is directly inserted into the medicine bottle to draw medicine. Since the insertion depth of the needle is uncontrollable (limited by the operation method of the operator), when the insertion is too deep, the amount of medicine drawn will be reduced, resulting in the medicine remaining in the medicine bottle and unable to meet the requirement of a single use dose.

[0003] Therefore, there are now special adapters for drawing medicine from medicine bottles or mixing medicines on the market. For example, see the easily connectable transfer system with the Chinese Patent Publication No. CN103501751A, the piercing member for a vial adapter with the Chinese Patent Publication No. CN112312877A, the liquid medicine medical device with the Chinese Patent Publication No. CN1950049A, the medicine bottle assembly set with a medicine bottle and a pre-connected fluid transfer device with the Chinese Patent Publication No. CN102548523A, and the liquid medicine transfer device with the Chinese Patent Publication No. CN104755059A. All of them disclose an adapter device for transferring drugs in a medicine bottle. Such products all have a bowl-shaped cap with a piercing needle inside. Align the bowl-shaped cap with the rubber stopper cap of the medicine bottle, press down, insert the piercing needle into the rubber stopper cap to pierce the rubber stopper cap and contact the drugs in the medicine bottle. Then connect a syringe or another medicine bottle to draw out or mix the medicine.

[0004] However, the current adapters still have some defects in actual use. For example, after the needle is inserted, the rubber stopper is likely to block the hole of the piercing needle, resulting in problems such as unsmooth medicine discharge. Repeated operations or shaking the medicine bottle are still required to smoothly draw out the medicine. Summary of the Invention

[0005] The purpose of the present invention is to provide a medicine adapter to facilitate the transfer of drugs in a medicine bottle and improve the operation convenience.

[0006] To achieve the above invention purpose, the present invention provides a medicine adapter, including a cap body, an interface, and a piercing needle;

[0007] Inside the cap body is a medicine bottle cap accommodating cavity; a piercing needle is provided inside the cap body; an interface is provided outside the cap body;

[0008] A slotted groove is provided on the piercing needle, a channel is provided in the middle of the interface, and the slotted groove communicates with the channel;

[0009] The interface is adapted to a Luer interface;

[0010] The puncture needle is vertically arranged inside the cover body; the puncture needle includes a needle body and a needle tip.

[0011] The needle body is connected to the top of the inner cavity of the cover body; a conical needle tip is provided at the bottom of the needle body.

[0012] The puncture needle is completely located inside the cover body.

[0013] Three slots are provided on the needle tip; the slots communicate with the internal cavity of the puncture needle.

[0014] The slots are evenly distributed along the center line of the needle tip.

[0015] The slots are strip-shaped slots along the axial direction of the puncture needle.

[0016] The slots are parabolic curved surfaces with openings facing outwards along the radial direction of the puncture needle, cutting the cone of the needle tip into a triangular groove shape.

[0017] On the side wall of the cover body, a positioning mechanism and a locking mechanism are provided.

[0018] The positioning mechanism includes positioning bumps; the positioning bumps are elastically connected to the side wall of the cover body.

[0019] In the natural state, the positioning bumps protrude inwards from the inner wall of the cover body.

[0020] The positioning bumps are close to the top of the inner cavity of the cover body.

[0021] The locking mechanism includes a locking hook; the locking hook is elastically connected to the side wall of the cover body.

[0022] In the natural state, the locking hook protrudes inwards from the inner wall of the cover body.

[0023] The locking hook is close to the bottom opening surface of the cover body.

[0024] As a further improvement of the present invention, the parabolic curve of the cross-section of the slot gradually decreases upwards along the axis of the puncture needle from the tip.

[0025] As a further improvement of the present invention, the slot extends vertically to the needle body.

[0026] The length direction of the slot communicates with the internal cavity of the puncture needle and the internal channel of the interface.

[0027] The distance from the bottom of the slot to the top of the inner cavity of the cover body is C.

[0028] The thickness of the plug part of the rubber stopper of the medicine bottle is D; C = D + (0.1 - 2) mm.

[0029] As a further improvement of the present invention, there are 2 sets of the positioning mechanism and the locking mechanism respectively;

[0030] The 2 sets of positioning mechanisms are symmetrically arranged on the side wall of the cover body;

[0031] The 2 sets of locking mechanisms are symmetrically arranged on the side wall of the cover body;

[0032] The positioning mechanism and the locking mechanism are arranged at an interval of 90° along the side wall of the cover body.

[0033] As a further improvement of the present invention, the positioning mechanism includes a positioning spring piece;

[0034] The positioning spring piece is arranged vertically along the cover body, and is connected to the bottom opening part of the cover body.

[0035] As a further improvement of the present invention, the locking mechanism includes a locking spring piece;

[0036] The locking spring piece is a transverse locking spring piece and is arranged horizontally along the cover body;

[0037] Or, the locking spring piece is a vertical locking spring piece, which is arranged vertically along the cover body, and the root is connected to the top of the cover body;

[0038] Or, the locking spring piece is a short-arm locking spring piece, which is arranged vertically along the cover body, and the root is connected to the bottom opening part of the cover body.

[0039] Further, when the locking spring piece is a short-arm locking spring piece, an unlocking handle is arranged outside the locking hook;

[0040] The unlocking handle is connected to the outside of the locking hook through a connecting arm;

[0041] The upper part of the connecting arm bulges inward and is provided with a prying point;

[0042] The unlocking handle is provided with a prying arm outward and upward along the prying point.

[0043] Furthermore, a handle is arranged at the end of the prying arm.

[0044] As a further improvement of the present invention, wing pieces can be arranged on the top of the cover body, and the wing pieces are symmetrically arranged relative to the cover body;

[0045] The wing pieces extend beyond the side wall of the cover body to form a hand-operated gripping space.

[0046] As a further improvement of the present invention, the positioning bump of the positioning mechanism and the locking hook of the locking mechanism are located on the same elastic connecting arm;

[0047] The middle of the elastic connecting arm is connected to the cover body through a connection point;

[0048] The elastic connecting arm can deflect along the connection point or be distorted and deformed outward.

[0049] As a further improvement of the present invention, the cover body is a non-cylindrical closed structure, and a positioning mechanism is provided on the wall surface of the cover body;

[0050] Elastic reset arms are provided outside the cover body on both sides of the positioning mechanism;

[0051] The top of the elastic reset arm is connected to the top of the cover body through a reset connecting arm;

[0052] The bottom of the elastic reset arm is provided with the locking hook inward;

[0053] There are 4 elastic reset arms.

[0054] Further, the elastic reset arm extends upward, and an unlocking button is provided beyond the reset connecting arm;

[0055] The unlocking button is located above the top surface of the cover body.

[0056] The drug adaptation adapter of the present invention improves the puncture needle, the positioning mechanism provided on the wall surface of the cover body, and the locking mechanism; the structural improvement of the puncture needle can reduce the puncture resistance and avoid puncture debris; the improvement of the wall surface structure improves the positioning accuracy of the cover body relative to the drug capping through the positioning mechanism, so that the puncture needle can be inserted in the exact middle of the rubber stopper; through the locking mechanism, the cover body can be reliably fixed on the medicine bottle to avoid falling off during use.

[0057] The drug adaptation adapter of the present invention has a simple structure, can improve the efficiency of transferring the drug in the medicine bottle, is convenient to operate, and is convenient to disassemble by setting some auxiliary structures (wing pieces, unlocking handles, unlocking buttons). Brief Description of the Drawings

[0058] Figure 1 It is a schematic diagram of the medicine bottle structure;

[0059] Figure 2 is a schematic diagram of the structure of the drug adaptation adapter of the present invention;

[0060] Figure 3 It is a bottom view of the drug adaptation adapter of the present invention;

[0061] Figure 4 It is a schematic diagram of the structure of the puncture needle;

[0062] Figure 5 It is a cross-sectional view of the drug adaptation adapter of the present invention;

[0063] Figure 6 is a horizontal projection view of the puncture needle of the present invention;

[0064] Figure 7 Figure 5 is a diagram showing the puncture force test results of the puncture needle of the present invention;

[0065] Figure 8 is a schematic diagram showing the installation process of the drug adaptation adapter on the medicine bottle;

[0066] Figure 9 is a schematic diagram showing the structure of the drug adaptation adapter after being installed in place on the medicine bottle;

[0067] Figure 10 is a schematic diagram showing the usage mode of the syringe;

[0068] Figure 11 is a schematic diagram showing the mixing of medicines in the medicine bottle;

[0069] Figure 12 is a schematic diagram of the first embodiment of the external structure of the cover body;

[0070] Figure 13 is a schematic diagram of the second embodiment of the external structure of the cover body;

[0071] Figure 14 is a schematic diagram of the third embodiment of the external structure of the cover body;

[0072] Figure 15 is a schematic diagram showing the setting of the wing;

[0073] Figure 16 is a schematic diagram of the fourth embodiment of the external structure of the cover body;

[0074] Figure 17 is a schematic diagram of the fifth embodiment of the external structure of the cover body;

[0075] Figure 18 is a schematic diagram of the sixth embodiment of the external structure of the cover body. Specific Embodiments

[0076] The following further describes the present invention in conjunction with the accompanying drawings and specific embodiments.

[0077] As Figure 1 shown, it is a schematic diagram of the structure of the medicine bottle 1, including a bottle body 11, a sealing cap 12, a rubber stopper 13, and a bottleneck 14 is located below the sealing cap 12.

[0078] As shown in Figure 2, it is a schematic diagram of the structure of the drug adaptation adapter 2 of the present invention. Further reference can be made to Figure 3 , the drug adaptation adapter 2 of the present invention includes a cover body 21, an interface 22, and a puncture needle 23; the cover body 21 is a bowl-shaped cover, and a puncture needle 23 is provided therein; an interface 22 is provided outside the cover body 21, and a channel 221 is provided in the middle thereof, which is communicated with the opening on the puncture needle 23.

[0079] The drug adapter 2 of the present invention can be divided into a male interface (as shown in Fig. 2(a)) or a female interface (as shown in Fig. 2(b)) according to the form of the interface 22, and the interface can be adapted to the Luer taper (ISO 594-1, GB / T 1962.1, ISO 594-2, GB / T 1962.2).

[0080] One of the improvements of the present invention is to improve the structure of the puncture needle 23, such as Figures 3 - 5 As shown, the puncture needle 23 is vertically arranged in the middle of the drug adapter 2. The main body of the puncture needle 23 is a cylindrical needle body 231, and a conical needle tip 232 is provided at the top; the top of the needle tip 232 is completely located within the cover body 21. As Figure 5 shown, the distance from the top of the needle tip 232 to the bottom opening surface of the cover body 21 is A; A is approximately 1 / 3 of the inner height of the cover body 21. In this way, when using the drug adapter 2 of the present invention, the bottom of the inner cavity of the cover body 21 first contacts the seal 12 of the medicine bottle 1 for central positioning, and then during the process of pressing downwards, the needle tip 232 just contacts the rubber stopper 13 and pierces the rubber stopper 13, so that the puncture needle 23 can always pierce in the middle of the medicine bottle 1.

[0081] The inside of the puncture needle 23 is a cavity and is in communication with the channel 221 inside the interface 22; several slots 233 are provided on the needle tip 232, and the slots 233 extend vertically to the needle body 231; the slots 233 are in communication with the inner cavity of the puncture needle 23.

[0082] Three slots 233 are evenly arranged along the center lines of the needle tip 232 and the needle body 231. The slots 233 are strip-shaped slots along the axis direction of the puncture needle 23; further, as shown in Fig. 6, the slots 233 are parabolic curved surfaces with the opening facing outwards along the radial direction of the puncture needle 23, and the cone of the needle tip 232 is cut into a triangular groove shape; and the parabolic curve of the cross-section of the slots 233 gradually decreases upwards from the tip along the axis of the puncture needle 23; when the needle tip 232 pierces into the rubber stopper 13, due to the small contact surface of the triangular groove and the parabolic surface ridge line on the cone of the needle tip 232 gradually opening outwards; during puncture, after the rubber stopper punctures an opening along the involute of the triangular groove on the needle tip 232, it slides along the wall surface curve of the slot 233. During the process of forcefully piercing, the opening area receives an outward tension instead of a cutting force resistance, so it is easier to pierce the rubber stopper 13, and there will be no obvious cutting marks on the colloid of the rubber stopper 13, the risk of colloid residue is smaller, and it is less likely to generate puncture debris.

[0083] The slot 233 on the needle tip 232 is mainly a triangular slot for puncturing; while the slot 233 on the needle body 231 is mainly for drug delivery.

[0084] Three slots 233 are adopted. In this way, even if there is colloid residue during the piercing process of the rubber stopper 13, the probability of simultaneously blocking the three slots 233 is very low, which can ensure the output of the drug. At the same time, the slots 233 are strip-shaped and run through the needle body 231 all the time. The opening area of the slots 233 is very large and it is not easy to cause blockage.

[0085] As Figure 7 shown, it is the comparison curve of the piercing force test between the piercing needle 23 of the present invention and a certain commercially available product. The piercing object adopts the same specification and the same batch of butyl rubber stoppers (brominated) for sterile powder for injection. The test method refers to the first method of YBB000322004 - 2015 and the piercing chip - off method of YBB00522005 - 2015. The test results show that: the upper limit value of the piercing force of the piercing needle 23 of the present invention is 10.974 N, and the lower limit value is 3.962 N; while the upper limit value of the piercing force of the commercially available product is 12.664 N (15.4% higher than the present invention), and the lower limit value is 6.997 N (76.6% higher than the present invention). And the piercing needle 23 of the present invention is continuously pierced 100 times (100 needles), and no piercing chips are visually found.

[0086] A strengthening part 234 is provided at the connection part between the needle body 231 and the cover body 21, which can improve the connection reliability of the piercing needle 23 in the cover body 21 and avoid bending and damage during the piercing process.

[0087] As shown in Figure 8, it is the schematic diagram of the process of installing the drug - adapting adapter 2 of the present invention onto the medicine bottle 1, especially showing the process of the piercing needle 23 piercing through the rubber stopper 13.

[0088] When the drug adapter 2 of the present invention is properly installed on the medicine bottle 1 (as shown in Fig. 8(d)), the cover body 21 is completely buckled on the capping 12, and the top surface of the inner cavity of the cover body 21 is close to the upper surface of the rubber stopper 13. The puncture needle 23 pierces the rubber stopper 13, and the slotted groove 233 is located in the internal cavity of the rubber stopper 13; preferably, the entire slotted groove 233 is located in the internal cavity of the rubber stopper 13, that is, the entire slotted groove 233 is located inside the medicine bottle 1; further, the bottom of the slotted groove 233 is as close as possible to the top surface of the internal cavity of the rubber stopper 13, so that the medicine in the medicine bottle 1 can flow out through the slotted groove 233, thereby reducing the residue in the medicine bottle 1. Specifically, the distance from the bottom of the slotted groove 233 to the top of the inner cavity of the cover body 21 is C; the thickness of the plug part of the rubber stopper 13 of the medicine bottle 1 is D; C = D + (0.1 - 2) mm. When the cover body 21 is covered on the medicine bottle 1, there will be a little gap (about 0.1 - 0.5 mm) between the top of the inner cavity of the cover body 21 and the surface of the rubber stopper 13, so that the bottom of the slotted groove 233 is as close as possible to the top surface of the internal cavity of the rubber stopper 13.

[0089] Of course, part of the slotted groove 233 can be located in the internal cavity of the rubber stopper 13 and part in the top colloid of the rubber stopper 13. In this way, when the medicine bottle 1 is inverted downward to discharge the medicine, the medicine can completely flow out through the slotted groove 233. However, at this time, the medicine bottle will partially relieve the newly punctured part of the rubber stopper 13, which may cause rubber pollution; or due to the insufficient thickness of the rubber stopper 13 or the drug adapter 2 not being pressed in place with sufficient force (resulting in a certain gap), the bottom of the slotted groove 233 is partially located outside the rubber stopper 13, and it is easy to cause drug leakage when the medicine bottle 1 is inverted downward to discharge the medicine.

[0090] As shown in Fig. 9, it is a schematic diagram of the overall structure after the drug adapter 2 of the present invention is properly installed on the medicine bottle 1.

[0091] As shown in Figs. 10 and 11, they are schematic diagrams of the use after the drug adapter 2 is properly installed on the medicine bottle 1. Fig. 10 is a schematic diagram of the use of the syringe 3. Connect the end of the syringe to the interface 22 of the drug adapter 2, and the medicine can be drawn from the medicine bottle 1 into the syringe 3. Fig. 11 is a schematic diagram of mixing medicines in medicine bottles. Connect two medicine bottles with the drug adapter 2 installed (the interfaces 22 of the used drug adapters 2 are one male and one female, and are paired. When connecting, they can be connected in a horizontal state to prevent the medicine from flowing out), and then set the medicine bottle 1 vertically, so that the medicine in the upper medicine bottle 1 flows into the lower medicine bottle 1 through the channel 221 of the connected drug adapters 2 for mixing.

[0092] The second improvement of the present invention is to improve the external structure of the cover body 21.

[0093] As shown in FIGS. 12 - 14, on the side wall of the cover body 21, a positioning mechanism 4 and a locking mechanism 5 are respectively provided;

[0094] The positioning mechanism 4 includes a positioning bump 41 and a positioning elastic piece 42; in the natural state, the positioning bump 41 protrudes inward from the inner wall of the cover body 21; the positioning bump 41 is elastically fixed on the cover body 21 through the positioning elastic piece 42. When the cover body 21 is covered on the medicine bottle 1, the positioning bump 41 abuts against the wall surface of the sealing cover 12, thereby eliminating the gap between the inner cavity of the cover body 21 and the outer wall of the sealing cover 12 and reducing shaking; therefore, the positioning bump 41 is arranged near the top of the inner cavity of the cover body 21. Because the positioning bump 41 is arranged relatively high on the wall surface of the cover body 21, the positioning elastic piece 42 is preferably arranged vertically along the cover body 21 as shown in the figure and is connected to the bottom opening part of the cover body 21; of course, the positioning elastic piece 42 can also be arranged horizontally.

[0095] The locking mechanism 5 includes a locking hook 51 and a locking elastic piece; in the natural state, the locking hook 51 protrudes inward from the inner wall of the cover body 21; the locking hook 51 is elastically fixed on the cover body 21 through the locking elastic piece. When the cover body 21 is covered on the medicine bottle 1, the locking hook 51 first abuts against the wall surface of the sealing cover 12; as the cover body 21 is covered downward, finally the locking hook 51 crosses the wall surface of the sealing cover 12 and slides to the bottleneck 14 part. The locking hook 51 is elastically reset under the action of the locking elastic piece and remains in the bottleneck 14 part, hooking the bottom of the sealing cover 12. The locking hook 51 is arranged near the bottom opening surface of the cover body 21. The locking hook 51 has a certain width, so as to reliably hook the bottom of the sealing cover 12.

[0096] Due to the space limitation of the cover body 21, two sets of the positioning mechanism 4 and the locking mechanism 5 are provided and symmetrically arranged on the side wall of the cover body 21; and preferably, the four sets of mechanisms are arranged at intervals of 90°.

[0097] There are various implementation manners for the locking elastic piece:

[0098] As shown in FIG. 12, for the first implementation manner, the locking elastic piece is a horizontal locking elastic piece 52 and is arranged horizontally along the cover body 21.

[0099] As shown in FIG. 13, for the second implementation manner, the locking elastic piece is a vertical locking elastic piece 52 and is arranged vertically along the cover body 21, and the root is connected to the top of the cover body 21.

[0100] For the above two settings, the elastic arms of the locking elastic piece are relatively long, and a relatively large deformation amount can be generated.

[0101] As shown in FIG. 14, in the third embodiment, the locking spring piece is a short-arm locking spring piece 54, which is arranged along the vertical direction of the cover body 21, and the root is connected to the bottom opening part of the cover body 21. Since the lower distance is small, the length of the short-arm locking spring piece 54 is relatively short.

[0102] When the drug adapter 2 of the above embodiment needs to be removed from the medicine bottle 1, it is necessary to pinch the interface 22 by hand, or hold the bottom opening edge of the cover body 21 (the opening edge is tapered and opens outward, which not only provides guidance when pressing down, but also can be used as a holding body when separating), overcome the locking force of the locking hook 51, make it open outward again, and leave the bottleneck 14 and return to the sealing cap 12, so as to smoothly remove the drug adapter 2.

[0103] To facilitate the removal of the drug adapter 2, as shown in FIG. 15, fins 6 can be provided on the top of the cover body 21, and the fins 6 are symmetrically arranged relative to the cover body 21; the fins 6 extend beyond the vertical surface of the cover body 21 to form a hand-operated holding space, and the holding area is larger than the holding area of the bottom opening edge of the cover body 21, thus facilitating operation.

[0104] Or, based on the third embodiment, the fourth embodiment shown in FIG. 16 is formed. An unlocking handle 7 is provided outside the locking hook 51; the unlocking handle 7 is connected to the outside of the locking hook 51 through a connecting arm 71; the upper part of the connecting arm 71 bulges inward and is provided with a prying point 72, and the unlocking handle 7 is provided with a prying arm 73 extending outward and upward along the prying point 72; preferably, a handle 74 is provided at the end of the prying arm 73.

[0105] During the installation process of the drug adapter 2, when the locking hook 51 abuts against the sealing cap 12, the unlocking handle 7 opens outward with the locking hook 51; when the drug adapter 2 is installed in place, the locking hook 51 is driven by the short-arm locking spring piece 54 to reset inward, driving the unlocking handle 7 to reset inward.

[0106] When it is necessary to remove the drug adapter 2 from the medicine bottle 1, as shown in FIG. 16(d), the handle 74 at the end of the unlocking handle 7 can be pinched by hand to make the prying point 72 abut against the sealing cap 12, and then using the prying point 72 as a fulcrum, the prying arm 73 is forced inward, while the connecting arm 71 is forced outward, thereby driving the locking hook 51 outward, and the locking hook 51 leaves the bottleneck 14; at this time, pinch the unlocking handle 7 and pull it upward to remove the drug adapter 2 from the medicine bottle 1.

[0107] Embodiment 5. As shown in FIG. 17, the positioning bump 41 of the positioning mechanism 4 and the locking hook 51 of the locking mechanism 5 can be located on the same elastic connecting arm 43; the middle of the elastic connecting arm 43 is connected to the cover body 21 through a connection point 44; the elastic connecting arm 43 can deflect slightly or twist outward along the connection point 44.

[0108] When the medicine adapter 2 is installed on the medicine bottle 1, the cover body 21 covers the sealing cover 12. When pressed down, the locking hook 51 first abuts against the vertical surface of the sealing cover 12, and the locking hook 51 is forced outward, driving the lower part of the elastic connecting arm 43 to deflect outward (only the lower part of the elastic connecting arm 43 is stressed, so the whole deflects around the connection point 44, and the positioning bump 41 also moves inward accordingly).

[0109] When the positioning bump 41 contacts the sealing cover 12, at this time the upper part of the elastic connecting arm 43 is also stressed and deflects outward, and the elastic connecting arm 43 generates a V-shaped torsional deformation along the connection point 44.

[0110] When the locking hook 51 crosses the sealing cover 12 and moves to the bottleneck 14 part, the lower part of the elastic connecting arm 43 is no longer stressed and resets; at this time, since the upper part of the elastic connecting arm 43 is still stressed outward, it will drive the lower part of the elastic connecting arm 43 to tilt slightly inward, making the locking hook 51 more inward compared to the natural state, and can better hook the bottleneck 14 part.

[0111] Embodiment 6. As shown in FIG. 18, the locking mechanism 5 can also be an independent cantilever structure; the cover body 21 is a non-cylindrical closed structure, and a positioning mechanism 4 is provided on the wall surface; outside the cover body 21 on both sides of the positioning mechanism 4, elastic reset arms 55 are provided; the top of the elastic reset arm 55 is connected to the top of the cover body 21 through a reset connecting arm 56; the bottom of the elastic reset arm 55 is provided with the locking hook 51; there are 4 elastic reset arms 55.

[0112] Furthermore, the elastic reset arm 55 extends upward beyond the reset connecting arm 56 and is provided with an unlocking button 57; the unlocking button 57 is located above the top surface of the cover body 21.

[0113] When the medicine adapter 2 is installed on the medicine bottle 1, the locking hook 51 first contacts the sealing cover 12 and is forced to open outward (the elastic reset arm 55 opens outward accordingly); when the medicine adapter 2 is installed in place, the locking hook 51 is located at the bottleneck 14 part and elastically resets inward under the action of the elastic reset arm 55.

[0114] When removing the medicine adapter 2 from the medicine bottle 1, pinch the unlocking buckle 57 by hand, and make the unlocking buckle 57 incline inwards around the reset connecting arm 56, so as to drive the elastic reset arm 55 to open outwards, and further drive the locking hook 51 to open outwards, which is larger than the outer dimension of the cap 12, thus facilitating removal.

[0115] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A drug adapter, characterized in that It includes a cover body, an interface, and a puncture needle; Inside the cover body is a medicine bottle cap accommodating cavity; a puncture needle is provided inside the cover body; an interface is provided outside the cover body; The puncture needle is provided with a slotted groove, and a channel is provided in the middle of the interface, and the slotted groove communicates with the channel; The interface is adapted to a Luer interface; The puncture needle is vertically arranged inside the cover body; the puncture needle includes a needle body and a needle tip; The needle body is connected to the top of the inner cavity of the cover body; a conical needle tip is provided at the bottom of the needle body; The puncture needle is completely located inside the cover body; The needle tip is provided with 3 slotted grooves; the slotted grooves communicate with the internal cavity of the puncture needle; The slotted grooves are evenly distributed along the center line of the needle tip; The slotted groove is a strip-shaped slotted groove, which cuts the conical shape of the needle tip into a three-edge groove shape; The slotted groove is a strip-shaped slotted groove along the axial direction of the puncture needle; The slotted groove is a parabola curved surface with an outward opening along the radial direction of the puncture needle, which cuts the cone of the needle tip into a three-edge groove shape; The parabolic curve of the cross-section of the slotted groove gradually decreases upward from the tip along the axis of the puncture needle; The slotted groove vertically extends to the needle body; The length directions of the slotted grooves all communicate with the internal cavity of the puncture needle and the internal channel of the interface; The distance from the bottom of the slotted groove to the top of the inner cavity of the cover body is C; The thickness of the plug part of the medicine bottle rubber stopper is D; C = D + (0.1 - 2) mm; On the side wall of the cover body, a positioning mechanism and a locking mechanism are provided; The positioning mechanism includes positioning bumps; the positioning bumps are elastically connected to the side wall of the cover body; In the natural state, the positioning bumps protrude inward from the inner wall of the cover body; The positioning bumps are close to the top of the inner cavity of the cover body; The locking mechanism includes a locking hook; the locking hook is elastically connected to the side wall of the cover body; In the natural state, the locking hook protrudes inward from the inner wall of the cover body; The locking hook is close to the bottom opening surface of the cover body.

2. The drug adapter according to claim 1, wherein There are 2 sets of the positioning mechanism and the locking mechanism respectively; The 2 sets of the positioning mechanism are symmetrically arranged on the side wall of the cover body; The 2 sets of the locking mechanism are symmetrically arranged on the side wall of the cover body; The positioning mechanism and the locking mechanism are arranged at an interval of 90° along the side wall of the cover body.

3. The drug adapter according to claim 1, characterized in that, The positioning mechanism includes a positioning elastic piece; The positioning elastic piece is vertically arranged along the cover body, and the positioning elastic piece is connected to the bottom opening part of the cover body.

4. The drug adapter according to claim 1, characterized in that, The locking mechanism includes a locking elastic piece; The locking elastic piece is a horizontal locking elastic piece, which is arranged along the horizontal direction of the cover body; Or, the locking elastic piece is a vertical locking elastic piece, which is arranged along the vertical direction of the cover body, and the root is connected to the top of the cover body; Or, the locking elastic piece is a short-arm locking elastic piece, which is arranged along the vertical direction of the cover body, and the root is connected to the bottom opening part of the cover body.

5. The drug adapter according to claim 1, characterized in that, The locking mechanism includes a locking elastic piece; The locking elastic piece is a short-arm locking elastic piece, which is arranged along the vertical direction of the cover body, and the root is connected to the bottom opening part of the cover body; An unlocking handle is provided outside the locking hook; The unlocking handle is connected to the outside of the locking hook through a connecting arm; The upper part of the connecting arm bulges inward and is provided with a prying point; The unlocking handle is provided with a pry arm extending outward and upward along the pry point.

6. The drug adapter according to claim 5, wherein A handle is provided at the end of the pry arm.

7. The drug adaptation adapter according to claim 1, characterized in that Fins are provided at the top of the cover body, and the fins are symmetrically arranged relative to the cover body; The fins extend beyond the side wall of the cover body to form a hand-operated gripping space.

8. The drug adapter according to claim 1, characterized in that The positioning bump of the positioning mechanism and the locking hook of the locking mechanism are located on the same elastic connecting arm; The middle of the elastic connecting arm is connected to the cover body through a connection point; The elastic connecting arm can deflect along the connection point or be distorted outward.

9. The drug adapter according to claim 1, wherein The cover body is a non-cylindrical closed structure, and a positioning mechanism is provided on the wall surface of the cover body; Elastic reset arms are provided outside the cover body on both sides of the positioning mechanism; The top of the elastic reset arm is connected to the top of the cover body through a reset connecting arm; The bottom of the elastic reset arm is provided with the locking hook inward; There are 4 elastic reset arms.

10. The drug adapter according to claim 9, wherein The elastic reset arm extends upward and is provided with an unlocking button beyond the reset connecting arm; The unlocking button is located above the top surface of the cover body.

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