Double-channel liquid medicine transfer device

Abstract

The utility model relates to a double-channel liquid medicine transfer device, belongs to the field of medical instruments, and provides a double-channel liquid medicine transfer device aiming at the problems that an existing liquid medicine transfer device is poor in air tightness and prone to liquid leakage. The double-channel liquid medicine transfer device comprises a first puncture part and a second puncture part which are connected through a connecting base. The first puncture part and the second puncture part are each provided with a first channel and a second channel in a penetrating mode, the connecting base is provided with an opening and closing valve, the opening and closing valve is provided with a valve rod located between the first puncture part and the second puncture part, and the valve rod is provided with a first through hole used for communicating the first channels on the two sides and a second through hole used for communicating the second channels on the two sides. The connecting base comprises a handheld part and a containing part, the containing part is used for containing the valve rod, and a main body of the handheld part and a main body of the containing part are separated through a gap. The wall thickness of the containing part is small, the forming influence can be reduced, it is guaranteed that the inner diameter size of the containing part is balanced and uniform, then the air tightness between the valve rod and the connecting base is guaranteed, liquid medicine leakage is effectively prevented, and the effect in a bottle can be prevented from being affected.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, and particularly relates to a dual-channel liquid medicine transfer device. Background Art

[0002] In the process of dispensing medicine, it is often necessary to transfer the medicinal liquid from a small container to a large container. Usually, a syringe with a needle is used to extract the medicinal liquid in the small container, and then inject it into the large container. If the amount of medicine is large, it is necessary to extract and pipette multiple times. If the medicinal liquid to be pipetted is an anticancer agent with certain corrosiveness, a slight mistake in operation will cause irreversible damage to medical staff. For this reason, existing patents provide pipettes for pipetting and mixing medicinal liquids. For example, the utility model patent with patent number CN202236337U discloses a dual-channel pipette. Although the transfer and mixing of drugs can be achieved, the dual channels are all through-designs, and the dual channels are not provided with switches. This will cause the medicinal liquid in the container at one end that is first connected to be connected to the outside air. Since airtightness cannot be guaranteed, the medicinal liquid is easy to leak when transferring the medicine. In more serious cases, it will directly spray out, and the safety of transferring the medicine cannot be guaranteed. Utility Model Content

[0003] In response to the above-mentioned technical problems, the utility model provides a dual-channel liquid medicine transferor, which sets a gap on the connecting seat to ensure that the inner diameter size of the accommodating part that cooperates with the valve stem is uniform, effectively ensuring air tightness and preventing liquid medicine from leaking and spraying.

[0004] The technical solution adopted by the present invention is as follows: a dual-channel liquid medicine transferor, comprising a first puncture part and a second puncture part connected by a connecting seat, the first puncture part and the second puncture part are both provided with a first channel and a second channel, the connecting seat is provided with an opening and closing valve, the opening and closing valve is provided with a valve stem located between the first puncture part and the second puncture part, the valve stem is provided with a first through hole for connecting the first channels on both sides, and a second through hole for connecting the second channels on both sides, the connecting seat comprises a hand-held part and a housing part, the housing part is used to accommodate the valve stem, and the hand-held part and the main body of the housing part are separated by a gap.

[0005] In this setting, the wall thickness of the housing where the valve stem is installed is relatively thin, which can reduce the impact of thermal expansion and contraction of the plastic during injection molding, ensure that the inner diameter of the housing is balanced and uniform, and thus ensure the airtightness between the valve stem and the connecting seat, effectively preventing leakage of the liquid medicine. It can also isolate the outside air before opening the opening and closing valve to prevent the efficacy of the medicine in the bottle from being affected.

[0006] Furthermore, the gripping portion is provided with a gripping surface, which is a curved surface with a lower center and higher edges. Compared to conventional flat surfaces and anti-slip patterns, this curved surface with a lower center and higher edges forms a barrier at the edge of the connector to prevent the hand from slipping outward. This effectively prevents fingers from slipping when holding and pressing the connector for puncture, and the curved surface disperses the force exerted by the fingers, preventing discomfort caused by concentrated force on the fingers.

[0007] Furthermore, the outer diameter of the first puncture portion is smaller than that of the second puncture portion. The first puncture portion is typically used to pierce small containers, so reducing its outer diameter can reduce puncture force and reduce debris. The use of two puncture portions, one thicker and one thinner, also makes it easier to distinguish the target to be punctured.

[0008] Furthermore, at least one concave surface is provided on the outer side of the first puncture portion and / or the second puncture portion. Providing the concave surface can reduce the resistance of the first puncture portion and / or the second puncture portion and reduce puncture debris.

[0009] Furthermore, a set of clips is provided on one side of the connector, forming a receiving area centered on the first puncture portion. The clips can position a small first container (small bottle) to prevent it from tipping over, and can also distinguish between the first and second puncture portions, connecting to a small bottle and a large bottle, respectively, to prevent misoperation.

[0010] Furthermore, the connecting base is provided with a groove, which is formed by the inward concave side wall of the connecting base. Multiple grooves can be symmetrically arranged, so that when the handheld space is small, the grooves can be held for puncture. In addition, the grooves can also reduce the weight of the connecting base and facilitate molding.

[0011] Furthermore, the connecting seat includes a handle portion and a receiving portion, the curved surface being provided on the handle portion, the receiving portion being used to receive the valve stem, and a through hole being provided between the handle portion and the receiving portion. The provision of the through hole can prevent the two intersecting surfaces from shrinking during molding, effectively reducing molding defects.

[0012] Furthermore, the valve stem is provided with a slot on the side surface, and the inner wall of the receiving portion is provided with a plurality of ribs that can adapt to the slot. The rotational position of the valve stem is determined by the cooperation between the slot and the ribs. When the valve stem is rotated, the ribs produce a clicking sound when they pass through the slots, and the operator can also feel the position of the valve stem.

[0013] Furthermore, the on-off valve includes a handle rotating arm connected to the valve stem, and the handle rotating arm has a symmetrical structure. The symmetrical handle rotating arm can be assembled without distinguishing the direction, and the valve stem can be operated in both forward and reverse directions without distinguishing the direction during use, which is convenient for operation. In addition, the symmetrical structure facilitates mold opening and production.

[0014] Furthermore, different identification marks are respectively provided on the two surfaces of the connecting base facing the first puncture part and the second puncture part. By providing multiple identification marks, error prevention is effectively achieved.

[0015] Furthermore, the first channel has a first inclined surface and a second inclined surface formed at both ends of the first puncture portion and the second puncture portion, respectively. The second channel has a third inclined surface and a fourth inclined surface formed at both ends of the first puncture portion and the second puncture portion, respectively. The first inclined surface is close to the end of the first puncture portion, the second inclined surface is away from the end of the second puncture portion, the third inclined surface forms a height difference with the first inclined surface and is away from the end of the first puncture portion, the fourth inclined surface has a height difference with the second inclined surface, and is spaced apart from the end of the second puncture portion, forming an air guide groove at the space. The first inclined surface is close to the end of the first puncture portion, and the second inclined surface is away from the end of the second puncture portion, thereby ensuring that the top end of the first channel is above the liquid level of the first container (vial); the third inclined surface is away from the end of the first puncture portion, thereby ensuring that as much liquid as possible in the first container (vial) is removed. The provision of the air guide groove can also effectively prevent excessive shrinkage of the second puncture portion during molding, thereby ensuring molding strength.

[0016] The beneficial effects of the present invention are as follows: the present application is a dual-channel liquid medicine transferor, and the wall thickness of the accommodating portion for installing the valve stem is relatively thin, which can reduce the influence of thermal expansion and contraction of the plastic during injection molding, ensure that the inner diameter size of the accommodating portion is balanced and uniform, and thus ensure the airtightness between the valve stem and the connecting seat, effectively preventing leakage of the liquid medicine, and can also isolate the outside air before opening the opening and closing valve to prevent the efficacy of the medicine in the bottle from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the dual-channel liquid transfer device (first channel side);

[0018] Figure 2 Schematic diagram of the structure of the dual-channel liquid transfer device (second channel side);

[0019] Figure 3 This is a schematic diagram of the structure of the front side of the dual-channel liquid transfer device;

[0020] Figure 4 It is a structural schematic diagram of the side of the dual-channel liquid transfer device;

[0021] Figure 5 for Figure 4 Schematic diagram of the longitudinal cross-section structure;

[0022] Figure 6 Schematic diagram of the structure of the second puncture part;

[0023] Figure 7It is a structural diagram of the valve stem;

[0024] Figure 8 Schematic diagram of the structure inside the accommodating part;

[0025] Among them: 1-first puncture part; 11-first inclined surface; 12-third inclined surface; 13-concave surface; 2-second puncture part; 21-second inclined surface; 22-fourth inclined surface; 23-air guide groove; 3-connecting seat; 31-curved surface; 32-buckle; 33-groove; 34-handle part; 35-accommodation part; 351-convex rib; 36-gap; 4-first channel; 5-second channel; 6-valve stem; 61-first through hole; 611-extension groove; 62-second through hole; 63-card slot; 64-handle rotating arm. DETAILED DESCRIPTION

[0026] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0027] This embodiment is a dual-channel liquid medicine transfer device. Figures 1 to 8 As shown, it includes a first puncture part 1 and a second puncture part 2 connected by a connecting seat 3, and the first puncture part 1 and the second puncture part 2 are both provided with a first channel 4 and a second channel 5, the connecting seat 3 is provided with an opening and closing valve, and the opening and closing valve is provided with a valve stem 6 located between the first puncture part 1 and the second puncture part 2, and the valve stem 6 is provided with a first through hole 61 for connecting the first channels 4 on both sides, and a second through hole 62 for connecting the second channels 5 on both sides, wherein the first channels 4 on both sides refer to the first channel located in the first puncture part 1 and the first channel located in the second puncture part 2, respectively, and the second channels 5 on both sides refer to the second channel located in the first puncture part 1 and the second channel located in the second puncture part 2, respectively, the connecting seat 3 includes a hand-held part 34 and a receiving part 35, the receiving part 35 is used to accommodate the valve stem 6, and the hand-held part 34 and the main body of the receiving part 35 are separated by a gap 36. When the valve stem 6 rotates, the first channel 4 is connected before the second channel 5. Specifically, in this embodiment, the first through hole 61 forms an extension groove 611 on the surface of the valve stem 6. The extension groove 611 extends along the rotation direction. During the rotation of the valve stem 6, the extension groove 611 first connects with the first channels 4 on both sides, so that the air passages are connected first. The valve stem 6 continues to rotate until the two ends of the first through hole 61 and the second through hole 62 are respectively connected with the first channel 4 and the second channel 5 on both sides. At this time, the first channel 4 and the second channel 5 are simultaneously in a connected state.

[0028] The wall thickness of the accommodating portion 35 for installing the valve stem 6 is relatively thin, which can reduce the influence of thermal expansion and contraction of plastic during injection molding, ensure that the inner diameter of the accommodating portion 35 is balanced and uniform, and further ensure the airtightness between the valve stem 6 and the connecting seat 3, effectively preventing leakage of the liquid medicine, and can also isolate the outside air before opening the opening and closing valve to prevent the efficacy of the medicine in the bottle from being affected.

[0029] The grip portion 34 is provided with a gripping surface, which is a curved surface 31 with a lower center and higher edges. Compared to conventional flat surfaces and anti-slip patterns, the curved surface 31 with a lower center and higher edges forms a barrier at the edge of the connector 3 to prevent the hand from sliding outward. This effectively prevents the finger from slipping when holding and pressing the connector for puncture. The curved surface 31 also disperses the force exerted by the finger, preventing discomfort caused by concentrated force on the finger.

[0030] like Figure 1 、 Figure 2 、 Figure 3 As shown, the outer diameter of the first puncture portion 1 is smaller than that of the second puncture portion 2. The first puncture portion 1 is typically used to pierce small containers, so reducing its outer diameter can reduce puncture force and reduce debris. Providing two puncture portions, one thicker and one thinner, also makes it easier to distinguish the target to be punctured.

[0031] Two symmetrically arranged concave surfaces 13 are provided on the outer side of the first puncture part 1. The provision of the concave surfaces 13 can reduce the resistance of the first puncture part 1 and also reduce puncture debris.

[0032] A set of snaps 32 is provided on one side of the connector 3, forming a receiving area centered around the first puncture portion 1. The snaps 32 can position a small first container (small bottle) to prevent it from tipping over. They also distinguish between the first puncture portion 1 and the second puncture portion 2, connecting to a small bottle and a large bottle, respectively, to prevent misoperation.

[0033] The connecting base 3 is further provided with a groove 33, which is formed by a concave side wall of the connecting base 3. Multiple grooves 33 can be symmetrically provided. In this embodiment, four grooves 33 are provided. When the handheld space is small, the grooves 33 can be held for puncture. In addition, the grooves 33 can also reduce the weight of the connecting base 3 and facilitate molding.

[0034] like Figure 6 As shown, the connecting seat 3 includes a handle portion 34 and a receiving portion 35. The curved surface 31 is provided at the handle portion 34. The receiving portion 35 is used to receive the valve stem 6. A through hole 36 is provided between the handle portion 34 and the receiving portion 35. The provision of the through hole 36 can prevent the two intersecting surfaces from shrinking during molding, effectively reducing molding defects.

[0035] like Figure 7 and Figure 8As shown, a slot 63 is provided on the side of the valve stem 6, and a plurality of ribs 351 are provided on the inner wall of the accommodating portion 35 to fit within the slot 63. The rotational position of the valve stem 6 is determined by the engagement of the ribs 351 and the slot 63. When the valve stem 6 is rotated, a clicking sound is produced when the ribs 351 pass through the slots 63, allowing the operator to sense the position of the valve stem 6.

[0036] The on-off valve includes a handle rotating arm 64 connected to the valve stem 6. The handle rotating arm 64 has a symmetrical structure. The handle rotating arm 64 with a symmetrical structure can be assembled without distinguishing the direction. When used, the valve stem 6 can be operated in both forward and reverse directions without distinguishing the direction. The operation is convenient. In addition, the symmetrical structure facilitates mold opening and production.

[0037] Different identification marks are provided on the two surfaces of the connecting base 3 facing the first puncture portion 1 and the second puncture portion 2. In this embodiment, a numerical mark (20) is provided on the surface facing the first puncture portion 1, and a text mark (large bottle) is provided on the surface facing the second puncture portion 2. In this way, multiple prompt marks are provided to effectively prevent mistakes.

[0038] The two ends of the first channel 4 form a first inclined surface 11 and a second inclined surface 21 at the first puncture part 1 and the second puncture part 2, respectively. The two ends of the second channel 5 form a third inclined surface 12 and a fourth inclined surface 22 at the first puncture part 1 and the second puncture part 2, respectively. The first inclined surface 11 is close to the end of the first puncture part 1, and the second inclined surface 21 is away from the end of the second puncture part 2. The third inclined surface 12 forms a height difference with the first inclined surface 11 and is away from the end of the first puncture part 1. There is a height difference between the fourth inclined surface 22 and the second inclined surface 12. The fourth inclined surface 22 is spaced apart from the end of the second puncture part 2, and an air guide groove 23 is formed at the interval. The first inclined surface 11 is close to the end of the first puncture portion 1, and the second inclined surface 21 is away from the end of the second puncture portion 2, which can ensure that the top end of the first channel 4 is located above the liquid level of the first container (vial); the third inclined surface 12 is away from the end of the first puncture portion 1, which can ensure that as much liquid as possible in the first container (vial) is removed. The provision of the air guide groove 23 can also effectively prevent excessive shrinkage of the second puncture portion 2 during molding, thereby ensuring molding strength.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A dual-channel liquid medicine transfer device, characterized in that: The invention comprises a first puncture portion and a second puncture portion connected by a connecting seat, wherein the first puncture portion and the second puncture portion are both provided with a first channel and a second channel, the connecting seat is provided with an opening and closing valve, the opening and closing valve is provided with a valve stem located between the first puncture portion and the second puncture portion, the valve stem is provided with a first through hole for connecting the first channels on both sides, and a second through hole for connecting the second channels on both sides, the connecting seat comprises a hand-held portion and a receiving portion, the receiving portion is used to receive the valve stem, and the hand-held portion and the main body of the receiving portion are separated by a gap.

2. The dual-channel liquid medicine transfer device according to claim 1, characterized in that: The hand-held portion is provided with a gripping surface, which is a curved surface with a lower middle and higher edges.

3. The dual-channel liquid medicine transfer device according to claim 1, characterized in that: The outer diameter of the first puncture portion is smaller than the outer diameter of the second puncture portion.

4. The dual-channel liquid medicine transfer device according to claim 1, 2 or 3, characterized in that: At least one concave surface is provided on the outer side of the first puncture portion and / or the second puncture portion.

5. The dual-channel liquid medicine transfer device according to claim 1, characterized in that: A group of buckles is provided on one side of the connecting seat, and the group of buckles surrounds a receiving area centered on the first puncture part.

6. The dual-channel liquid medicine transfer device according to claim 4, characterized in that: The connecting seat is further provided with a groove, which is formed by the inward concave portion of the side wall of the connecting seat.

7. The dual-channel liquid medicine transfer device according to claim 1, characterized in that: A clamping groove is provided on the side of the valve stem, and a plurality of convex ribs that can adapt to the clamping groove are provided on the inner wall of the accommodating portion. The rotation position of the valve stem is determined by the cooperation between the clamping groove and the convex ribs.

8. The dual-channel liquid medicine transfer device according to claim 1 or 6, characterized in that: The on-off valve comprises a handle rotating arm connected to the valve stem, and the handle rotating arm is a symmetrical structure.

9. The dual-channel liquid medicine transfer device according to claim 1, characterized in that: Different identification marks are respectively provided on two surfaces of the connecting base facing the first puncture part and the second puncture part.

10. The dual-channel liquid medicine transfer device according to claim 1, characterized in that: The two ends of the first channel respectively form a first inclined surface and a second inclined surface at the first puncture part and the second puncture part, and the two ends of the second channel respectively form a third inclined surface and a fourth inclined surface at the first puncture part and the second puncture part, wherein the first inclined surface is close to the end of the first puncture part, the second inclined surface is away from the end of the second puncture part, the third inclined surface forms a height difference with the first inclined surface and is away from the end of the first puncture part, there is a height difference between the fourth inclined surface and the second inclined surface, the fourth inclined surface is spaced apart from the end of the second puncture part, and an air guide groove is formed between the fourth inclined surface and the end of the second puncture part.

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