Dispensing pipettor

Abstract

The utility model relates to the technical field of medical instruments, and discloses a dispensing pipettor which comprises a flexible holding part, a puncture part and a flow stop rod, an accommodating cavity is formed in the flexible holding part; the puncture part penetrates through the flexible holding part, the two ends of the puncture part are a first puncture end and a second puncture end respectively, part of the structure of the first puncture end extends into the containing cavity to form a flow stopping part, an air passing channel penetrating through the puncture part is formed in the puncture part, a first liquid passing channel penetrating through the first puncture end is formed in the first puncture end, and a second liquid passing channel penetrating through the second puncture end is formed in the second puncture end. A flow stopping hole communicated with the first liquid passing channel is formed in the peripheral wall of the flow stopping part, and a second liquid passing channel communicated with the containing cavity and the outside is formed in the second puncture end; the flow stopping rod is arranged on the inner wall of the containing cavity and can be inserted into the flow stopping hole so that the first liquid passing channel can be communicated with or separated from the containing cavity. According to the technical scheme, waste of liquid medicine can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a medicine dispensing pipette. Background Art

[0002] In clinical practice, liquid medicine needs to be prepared for injection or infusion. In related technologies, the preparation work is performed through a dispensing pipette, and the two ends of the dispensing pipette pass through two medicine bottles to guide the liquid medicine in the upper medicine bottle to the lower medicine bottle. However, after the preparation is completed, the dispensing pipette is usually directly pulled out from the upper medicine bottle while the liquid medicine is flowing. At this time, if there is liquid medicine remaining in the upper medicine bottle, the remaining liquid medicine will be scattered around through the bottle mouth, which not only causes a waste of liquid medicine, but also may pollute the environment. Utility Model Content

[0003] The main purpose of the utility model is to provide a medicine dispensing pipette, aiming at reducing the waste of medicine liquid.

[0004] To achieve the above-mentioned purpose, the medicine dispensing pipette proposed by the utility model comprises:

[0005] A flexible gripping portion, wherein a receiving cavity is formed inside the flexible gripping portion;

[0006] a puncture member, wherein the puncture member pierces the flexible gripping portion, the two ends of the puncture member are respectively a first puncture end and a second puncture end, a part of the structure of the first puncture end extends into the accommodating cavity to form a flow-stopping portion, an air passage penetrating the puncture member is formed inside the puncture member, a first liquid passage penetrating the first puncture end is formed inside the first puncture end, a flow-stopping hole connected to the first liquid passage is formed on the outer peripheral wall of the flow-stopping portion, and a second liquid passage connecting the accommodating cavity and the outside is formed inside the second puncture end; and

[0007] A flow-stopping rod is arranged on the inner wall of the accommodating chamber, and the flow-stopping rod can be inserted into the flow-stopping hole to connect or isolate the first liquid passage from the accommodating chamber.

[0008] Optionally, the medication pipette further comprises an elastic reset member, which is sleeved on the flow-stop rod, and two ends of the elastic reset member are elastically abutted against the inner wall of the accommodating cavity and the outer peripheral wall of the flow-stop portion respectively.

[0009] Optionally, the medication pipette further comprises a limiting portion, the limiting portion is arranged on the outer peripheral wall of the flow-stopping portion, the limiting portion is formed with a through hole communicating with the flow-stopping hole, and the flow-stopping rod is inserted and limited in the through hole.

[0010] Optionally, the medication pipette further comprises a pressing portion, wherein the pressing portion is exposed on the flexible gripping portion, the pressing portion is arranged corresponding to the flow stop rod, and the pressing portion can drive the flow stop rod to move under the action of an external force.

[0011] Optionally, two first liquid passages are formed inside the first puncture end, and both of the first liquid passages are connected to the stop hole;

[0012] Two second liquid passages are formed inside the second puncture end;

[0013] Two air passages are formed inside the piercing member.

[0014] Optionally, a through hole is formed at one end of the flow-stopping rod close to the flow-stopping portion;

[0015] The medication pipette has a connected state, and in the connected state, the through hole is connected to the first liquid passage.

[0016] Optionally, the medication pipette further comprises a flow meter, wherein the flow meter comprises a detection portion and a display portion which are communicatively connected, wherein the detection portion is disposed in the accommodating cavity, and the display portion is exposed on the flexible gripping portion.

[0017] Optionally, the dispensing pipette also includes two limit members, one of which is sleeved on one end of the first puncture end close to the flexible gripping portion, and the other limit member is sleeved on one end of the second puncture end close to the flexible gripping portion, and the limit members are used to abut against the medicine bottle for limiting position.

[0018] Optionally, the cross-sectional area of ​​the flexible gripping portion gradually decreases from the middle portion to both ends of the flexible gripping portion.

[0019] Optionally, the flexible gripping portion is made of a transparent material.

[0020] In the technical scheme of the utility model, the first puncture end and the second puncture end are respectively inserted into the upper and lower medicine bottles, and then the medicine liquid in the upper medicine bottle is guided to the lower medicine bottle through the cooperation of the first liquid passage, the second liquid passage and the air passage. After the medicine dispensing is completed, the flexible grip is pressed to make the flow stop rod inserted into the flow stop hole. At this time, the medicine liquid stops flowing, and the second puncture end is pulled out from the lower medicine bottle. Then, the upper medicine bottle is rotated so that its bottle mouth faces upward, and then the first puncture end is pulled out. At this time, since the medicine bottle originally located at the top has been rotated so that the bottle mouth faces upward, the remaining medicine liquid in the medicine bottle will not flow out from the bottle mouth, thereby reducing the waste of medicine liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the medicine dispensing pipette provided by the utility model;

[0023] Figure 2 A cross-sectional view of an embodiment of the medication dispensing pipette provided by the utility model;

[0024] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0025] Figure 4 This is another cross-sectional view of an embodiment of the medication dispensing pipette provided by the utility model.

[0026] Description of Figure Numbers:

[0027] Label name Label name 1000 Dispensing pipette 201 Gas channel 1 Flexible grip 3 Stop rod 11 Accommodation cavity 31 Vias 2 Piercing piece 4 Elastic return element 21 First puncture end 5 Limiting part 211 Flow stop 6 Limit block 2111 Stop hole 7 Pressing part 212 The first liquid channel 8 Flow Meter 22 Second puncture end 9 Limiting parts 221 The second liquid channel

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] Please refer to Figures 1 to 4 The utility model proposes a dispensing pipette 1000, comprising a flexible gripping portion 1, a piercing member 2 and a flow-stopping rod 3; a receiving chamber 11 is formed inside the flexible gripping portion 1; the piercing member 2 penetrates the flexible gripping portion 1, and the two ends of the piercing member 2 are respectively a first piercing end 21 and a second piercing end 22, and a part of the structure of the first piercing end 21 extends into the receiving chamber 11 to form a flow-stopping portion 211, and a gas passage 201 penetrating the piercing member 2 is formed inside the piercing member 2, and a first liquid passage 212 penetrating the first piercing end 21 is formed inside the first piercing end 21, and a flow-stopping hole 2111 connecting the first liquid passage 212 is formed on the outer peripheral wall of the flow-stopping portion 211, and a second liquid passage 221 connecting the receiving chamber 11 and the outside is formed inside the second piercing end 22; the flow-stopping rod 3 is arranged on the inner wall of the receiving chamber 11, and the flow-stopping rod 3 can be inserted into the flow-stopping hole 2111 to connect or separate the first liquid passage 212 from the receiving chamber 11.

[0033] The flexible grip portion 1 is made of rubber, silicone, plastic, etc. The flexible grip portion 1 can increase the comfort of gripping and reduce the fatigue of the user's hands. In addition, the flexible grip portion 1 also helps to provide better grip and control, making the operation more precise and stable.

[0034] In this embodiment, the first puncture end 21 and the second puncture end 22 penetrate into the upper and lower medicine bottles respectively, and then the medicine liquid in the upper medicine bottle is guided to the lower medicine bottle through the cooperation of the first liquid passage 212, the second liquid passage 221 and the air passage 201. After the medicine dispensing is completed, the flexible gripping portion 1 is pressed to make the flow stop rod 3 inserted into the flow stop hole 2111. At this time, the medicine liquid stops flowing, and the second puncture end 22 is pulled out from the lower medicine bottle. Then, the upper medicine bottle is rotated so that its bottle mouth faces upward, and then the first puncture end 21 is pulled out. At this time, since the medicine bottle originally located at the top has been rotated so that its bottle mouth faces upward, the remaining medicine liquid in the medicine bottle will not flow out from the bottle mouth, thereby reducing the waste of medicine liquid.

[0035] In order to improve the convenience of the dispensing pipette 1000, in one embodiment of the present utility model, please refer to Figure 2 and Figure 3 The dispensing pipette 1000 further includes an elastic reset member 4, which is sleeved on the stop rod 3, and the two ends of the elastic reset member 4 are elastically abutted against the inner wall of the accommodating chamber 11 and the outer peripheral wall of the stop portion 211. The elastic reset member 4 can be a spring, elastic rubber, etc. Through the setting of the elastic reset member 4, when the flexible gripping part 1 is pressed to make the stop rod 3 inserted into the stop hole 2111 to block the first liquid passage 212 and the accommodating chamber 11, the elastic reset member 4 will be compressed at the same time. In this way, after the flexible gripping part 1 is stopped from being pressed, the stop rod 3 will gradually move away from the stop hole 2111 under the action of the elastic reset member 4 until the flexible gripping part 1 is reset. At this time, the stop rod 3 no longer blocks the first liquid passage 212 and the accommodating chamber 11, and the liquid medicine can flow into the accommodating chamber 11 normally, thereby avoiding the stop rod 3 being stuck in the stop hole 2111, which causes the medical staff to need extra work to pull out the stop rod 3, thereby improving the convenience of the dispensing pipette 1000.

[0036] Further, in one embodiment of the present invention, please refer to Figure 2 and Figure 3 The dispensing pipette 1000 further includes a limiting portion 5, which is disposed on the outer peripheral wall of the stopper portion 211. The limiting portion 5 is formed with a through hole connected to the stopper hole 2111, and the stopper rod 3 is inserted and limited in the through hole. The design of the limiting portion 5 can limit the position of the stopper rod 3 in the accommodating chamber 11. If the limiting portion 5 is not provided, the end of the stopper rod 3 facing the stopper portion 211 will shake in the accommodating chamber 11 due to the easy deformation of the flexible gripping portion 1. In this way, when it is necessary to stop the flow, the stopper rod 3 needs to be aligned with the stopper hole 2111 before being pressed and inserted, which increases the operation steps and is not easy to align, resulting in failure to stop the flow in time. In the case where the limiting portion 5 is provided, the position of the end of the stopper rod 3 facing the stopper portion 211 can be limited so that it is always aligned with the stopper hole 2111. When it is necessary to stop the flow, it can be directly pressed, which is convenient for use. In addition, the side of the limiting portion 5 facing the stop rod 3 is a plane, and the dispensing pipette 1000 also includes a limiting block 6, which is arranged on the inner wall of the accommodating chamber 11 and is sleeved on the stop rod 3. The side of the limiting block 6 facing the limiting portion 5 is a plane, and the two ends of the elastic limiting member 9 are elastically abutted against the limiting block 6 and the limiting portion 5 respectively. Compared with the inner wall of the accommodating chamber 11 and the arc surface of the stop portion 211, the setting of the two planes allows the elastic limiting member 9 to be better compressed.

[0037] For ease of use, in one embodiment of the present invention, please refer to Figure 1The medication pipette 1000 also includes a pressing portion 7, which is exposed on the flexible gripping portion 1. The pressing portion 7 is arranged corresponding to the flow stop rod 3. The pressing portion 7 can drive the flow stop rod 3 to move under the action of an external force. The pressing portion 7 is exposed on the flexible gripping portion 1. Medical staff can easily drive the flow stop rod 3 to move by pressing the pressing portion 7, thereby isolating the first liquid passage 212 from the accommodating chamber 11.

[0038] In order to ensure that the dispensing process is fast and stable, in one embodiment of the present utility model, please refer to Figures 2 to 4 , two first liquid passages 212 are formed inside the first puncture end 21; two second liquid passages 221 are formed inside the second puncture end 22; two air passages 201 are formed inside the puncture member 2. In this case, when the medicine bottle at the top and the medicine bottle at the bottom exchange liquid and air during medication, the flow rate of the medicine liquid and air can be accelerated. In addition, the two air passages 201 and the two first liquid passages 212 are staggered along the circumference of the puncture member 2 on the first puncture end 21, and the two air passages 201 and the two second liquid passages 221 are staggered along the circumference of the puncture member 2 on the second puncture end 22. In this case, the medicine liquid and the air are independent of each other when flowing and will not interfere with each other, and the stability of the medicine liquid flow rate is guaranteed while the flow rate of the medicine liquid is large.

[0039] It is understandable that, since two first liquid passage channels 212 are provided, when flow stopping is required, both first liquid passage channels 212 need to be isolated from the accommodating chamber 11. In order to facilitate isolating the two first liquid passage channels 212 at the same time, in one embodiment of the present utility model, please refer to Figure 3 and Figure 4 , a through hole 31 is formed at one end of the stopper rod 3 near the stopper portion 211, and the dispensing pipette 1000 is in a connected state, in which the through hole 31 is connected to a first liquid passage 212. That is, when the liquid medicine can flow normally, the stopper rod 3 is partially inserted into the stopper hole 2111 and exceeds one of the first liquid passages 212, and the first liquid passage 212 is connected to the through hole 31, and the liquid medicine in the first liquid passage 212 can flow normally into the accommodating chamber 11 through the through hole 31, without intersecting with another first liquid passage 212, and the liquid medicine can flow directly into the accommodating chamber 11. At this time, if the flow needs to be stopped, it is only necessary to press the stopper rod 3 to move a short distance to insert it into the bottom of the stopper hole 2111, and the through hole 31 is between the two first liquid passages 212, and does not contact the two first liquid passages 212, thereby conveniently realizing the isolation of the two first liquid passages 212.

[0040] In order to ensure the accuracy of the dispensing, in one embodiment of the present utility model, please refer to Figure 1The dispensing pipette 1000 also includes a flow meter 8, which has a detection part and a display part that are communicatively connected. The detection part is arranged in the accommodating cavity 11, and the display part is exposed on the flexible gripping part 1. By setting the flow meter 8, the flow rate and flow velocity of the liquid medicine can be monitored in real time to ensure the accuracy and stability of the dispensing. At the same time, it is also convenient for medical staff to observe the flow information, making the dispensing operation more convenient.

[0041] Further, in one embodiment of the present invention, please refer to Figure 1 The dispensing pipette 1000 also includes two limiters 9, one limiter 9 is sleeved on one end of the first puncture end 21 close to the flexible gripping portion 1, and the other limiter 9 is sleeved on one end of the second puncture end 22 close to the flexible gripping portion 1, and the limiter 9 is used to abut against the medicine bottle for limiting position. After the first puncture end 21 or the second puncture end 22 penetrates a medicine bottle, as the dispensing pipette 1000 gets closer and closer, the limiter 9 can fit and abut against the bottle mouth of the medicine bottle for limiting position. By setting the limiter 9, it is possible to ensure that the insertion depth of the first puncture end 21 and the second puncture end 22 is limited, and it is avoided that the liquid medicine in the medicine bottle remains in the medicine bottle and cannot flow out due to the insertion too deep, and it is also ensured that the contact between the first puncture end 21 and the second puncture end 22 and the medicine bottle is more stable, reducing the shaking and unstable factors in the dispensing process, and reducing the difficulty of operation. Overall, by setting the limiter 9, the operation time of dispensing can be reduced and the work efficiency of dispensing can be improved.

[0042] For ease of use, in one embodiment of the present invention, please refer to Figure 1 From the middle of the flexible grip portion 1 to the two ends of the flexible grip portion 1, the cross-sectional area of ​​the flexible grip portion 1 gradually decreases. Specifically, the flexible grip portion 1 is an arched elliptical shape, which can correspond to the shape of a bent palm, making it convenient for medical staff to hold it with their hands, thereby improving the operating experience of medical staff.

[0043] Furthermore, in one embodiment of the utility model, the material of the flexible grip 1 is a transparent material, such as polyethylene, polypropylene, etc. The flexible grip 1 made of a transparent material allows the user to clearly see the flow of the internal liquid medicine, which helps to control and adjust the flow of the liquid medicine. Such a design can improve the accuracy and visibility of the operation, ensuring that the dispensing process is more accurate and smooth. In addition, the transparent flexible grip 1 also allows the user to check whether there are bubbles or other abnormal conditions inside at any time, make adjustments in time, and improve the efficiency and stability of the operation.

[0044] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dispensing pipette, characterized in that: include: A flexible gripping portion, wherein a receiving cavity is formed inside the flexible gripping portion; A puncture member, wherein the puncture member pierces the flexible gripping portion, the two ends of the puncture member are respectively a first puncture end and a second puncture end, a part of the structure of the first puncture end extends into the accommodating cavity to form a flow-stopping portion, an air passage penetrating the puncture member is formed inside the puncture member, a first liquid passage penetrating the first puncture end is formed inside the first puncture end, a flow-stopping hole connected to the first liquid passage is formed on the outer peripheral wall of the flow-stopping portion, and a second liquid passage connecting the accommodating cavity and the outside is formed inside the second puncture end; as well as A flow-stopping rod is arranged on the inner wall of the accommodating chamber, and the flow-stopping rod can be inserted into the flow-stopping hole to connect or isolate the first liquid passage from the accommodating chamber.

2. The dispensing pipette according to claim 1, characterized in that: The medicine dispensing pipette also includes an elastic reset member, which is sleeved on the flow-stopping rod, and two ends of the elastic reset member are elastically abutted against the inner wall of the accommodating cavity and the outer peripheral wall of the flow-stopping portion respectively.

3. The dispensing pipette according to claim 1, characterized in that: The medicine dispensing pipette also includes a limiting portion, which is arranged on the outer peripheral wall of the flow-stopping portion. The limiting portion is formed with a through hole connected to the flow-stopping hole, and the flow-stopping rod is inserted and limited in the through hole.

4. The dispensing pipette according to claim 1, characterized in that: The medicine dispensing pipette also includes a pressing portion, which is exposed on the flexible gripping portion and is arranged corresponding to the flow-stopping rod. The pressing portion can drive the flow-stopping rod to move under the action of an external force.

5. The dispensing pipette according to any one of claims 1 to 4, characterized in that: Two first liquid passages are formed inside the first puncture end, and both of the first liquid passages are connected to the stop hole; Two second liquid passages are formed inside the second puncture end; Two air passages are formed inside the piercing member.

6. The dispensing pipette according to claim 5, characterized in that: A through hole is formed at one end of the flow-stopping rod close to the flow-stopping portion; The medication pipette has a connected state, and in the connected state, the through hole is connected to the first liquid passage.

7. The dispensing pipette according to any one of claims 1 to 4, characterized in that: The dispensing pipette also includes a flow meter, which has a detection part and a display part that are communicatively connected. The detection part is arranged in the accommodating cavity, and the display part is exposed on the flexible gripping part.

8. The dispensing pipette according to any one of claims 1 to 4, characterized in that: The dispensing pipette also includes two limit members, one of which is sleeved on one end of the first puncture end close to the flexible gripping portion, and the other limit member is sleeved on one end of the second puncture end close to the flexible gripping portion, and the limit members are used to abut against the medicine bottle for limiting position.

9. The dispensing pipette according to any one of claims 1 to 4, characterized in that: The cross-sectional area of ​​the flexible gripping portion gradually decreases from the middle portion to the two ends of the flexible gripping portion.

10. The dispensing pipette according to any one of claims 1 to 4, characterized in that: The flexible gripping portion is made of transparent material.

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