Universal pipetting connector stable to use and dispensing and pipetting system thereof

Abstract

The utility model discloses a universal pipetting connector stable to use and a dispensing and pipetting system thereof, and relates to the field of connectors of medical dispensing equipment. A sealing plug is arranged at the rear end of a connecting seat of the universal pipetting connector, a connecting needle tube and a sealing cap are arranged at the front end of the connecting seat, and an elastic piece and two fixed clamping arms are arranged on the connecting seat, so that the rear end of the pipetting connector can be communicated to a dispensing device in a sealed manner through the sealing plug; and the front end can be adaptively communicated with infusion bottles with different bottle opening structures through the connecting needle tube enclosed by the sealing cap in a sealing manner. Meanwhile, in the using process, the two fixing clamping arms can be matched with the elastic piece to tightly clamp bottle necks of infusion bottles of different structures, separation between the pipetting connector and the infusion bottles in the dispensing process is avoided, and meanwhile leakage caused by relative movement of the pipetting connector and the infusion bottles is also avoided.

Description

Technical Field

[0001] The utility model relates to the field of connectors for medical dispensing equipment, and particularly to a general pipetting connector with stable use and its dispensing pipetting system. Background Art

[0002] In the medical field, before injecting drugs into patients, it is usually necessary to configure and transfer drugs between drug containers such as vials and infusion bottles. Hazardous drugs such as anti-tumor drugs pose a certain risk of occupational exposure to medical staff during the dispensing process. A closed liquid transfer device can prevent drug leakage during the dispensing process and improve the safety of medical staff. However, the specifications of drug containers are often diverse. For example, the diameters of the mouths of infusion bottles are large or small, and the lengths and diameters of the necks of infusion bottles are also diverse. Also, for example, the connection holes provided on the mouths of infusion bottles are diverse, such as single, two, or even three. It can be seen that it is difficult for a closed liquid transfer device to be directly adapted to different specifications. For this reason, a pipetting connector can be configured so that one end of the pipetting connector can be adapted to a closed liquid transfer device, and the other end can be generally adapted to various specifications of infusion bottles. However, in addition to connecting the infusion bottle in a closed manner, this pipetting connector also needs to be fixed on the infusion bottle to ensure the stability of the infusion process. At the same time, after the infusion is completed, the pipetting connector also needs to be removed from the infusion bottle to facilitate the medical staff to supply the finally configured infusion bottle to the patient for infusion. Summary of the Utility Model

[0003] To solve the problems existing in the prior art, the main purpose of the present utility model is to provide a general pipetting connector with stable use and its dispensing pipetting system, which can stably install the pipetting connector on infusion bottles of different specifications while hermetically connecting the liquid transfer device and the infusion bottle, and the pipetting connector can be conveniently removed from the infusion bottle after the dispensing is completed.

[0004] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0005] In a first aspect, the present application provides a general pipetting connector with stable use, including:

[0006] A connection seat, in the middle of which a needle seat is provided. A cavity structure with a rearward opening and penetrating the connection seat is provided at the rear end of the needle seat. Wings are provided on both sides of the needle seat along the outer edge of the connection seat in a relative manner;

[0007] A connection needle tube, fixedly connected to the front end of the needle seat and communicating with the cavity structure;

[0008] A sealing cap, made of an elastic material, sleeved outside the connection needle tube, and the rear end opening thereof is fixedly connected to the front end of the needle seat; and,

[0009] A sealing plug, made of an elastic material, is fixedly arranged at the rear end of the connecting seat and seals the rear opening of the cavity structure;

[0010] It is characterized in that it further includes:

[0011] Two fixed clamping arms, the front part thereof is a clamping end, the rear part thereof is an operating end, and the middle part thereof is hinged between the two wings of the connecting seat; and,

[0012] An elastic member acts on the fixed clamping arms to apply an inward closing elastic force to the clamping ends.

[0013] In the present utility model, unless otherwise specified, the front and the front end refer to the end pointed by the tip of the connecting syringe needle, and the rear and the rear end refer to the opposite end.

[0014] Optionally, each clamping end of the fixed clamping arms is respectively provided with an outwardly curved guiding portion, so that the distance between the two fixed clamping arms at the guiding portion gradually increases from the rear to the front.

[0015] Optionally, each clamping end is respectively provided with an inwardly protruding clamping portion, and the guiding portion is arranged at the front end of the clamping portion.

[0016] Optionally, the operating ends of the fixed clamping arms extend towards both sides compared with the middle parts of the fixed clamping arms, and the front ends of each wing extend towards the middle parts of the fixed clamping arms on both sides.

[0017] Optionally, the elastic member is a torsion bar spring, the torsion bar spring includes a connecting section and elastic force sections, there are two elastic force sections, the connecting section is in a U shape, the rear end of each elastic force section is integrally connected to both ends of the connecting section, and the front end of each elastic force section is fixedly connected to the clamping end of the fixed clamping arm and applies an inward closing elastic force to the clamping end.

[0018] Optionally, the torsion bar spring further includes a clamping section, the clamping section is integrally connected to the front end of the elastic force section, the clamping section is bent in a Z shape, and the fixed clamping arm is provided with a clamping groove, and the clamping section is fixedly arranged in the clamping groove.

[0019] Optionally, each fixed clamping arm is respectively provided with a first positioning groove, each elastic force section on the torsion bar spring is respectively arranged in the first positioning grooves of the respective fixed clamping arms, and one of the wings of the connecting seat is provided with a second positioning groove, and the elastic force section of the torsion bar spring is arranged in the second positioning groove.

[0020] Optionally, it further includes a sealing cover, the sealing cover is fixedly arranged at the rear end of the connecting seat, both end faces of the sealing plug respectively abut between the opening of the cavity structure and the sealing cover, and a through hole is arranged in the middle of the sealing cover.

[0021] Optionally, a circumferentially extending clamping ramp is provided on the outer edge of the sealing cap, and a limiting block is provided at the thicker portion of the clamping ramp on the outer edge of the sealing cap.

[0022] In a second aspect, the present application further provides a dispensing pipetting system, including the above-mentioned universal pipetting connector. Among them, a liquid medicine transfer device is further included, and the liquid medicine transfer device includes a syringe and a needle sealing assembly.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] For the universal pipetting connector of the present utility model, a sealing plug is provided at the rear end of the connecting seat, so that the dispenser can be hermetically connected to the cavity structure inside the connecting seat by piercing the sealing plug. A connecting needle tube and a sealing cap are provided at the front end of the connecting seat, so that the connecting needle tube can be connected to the mouth of the infusion bottle under the hermetic enclosure of the sealing cap, and the connection method of the needle tube can be adapted to infusion bottles with different mouth structures. The pipetting connector is also provided with two fixed clamping arms. Under the action of an elastic member, the two fixed clamping arms can tightly clamp the bottleneck of infusion bottles with different structures, avoiding the separation between the pipetting connector and the infusion bottle during the dispensing process, and also avoiding leakage caused by the relative movement between the pipetting connector and the infusion bottle. Overall, the universal pipetting connector has good airtight and leak-proof performance, good adaptability to infusion bottles of different specifications, good connection stability, and convenient connection operation. Description of the Drawings

[0025] Figure 1 The first three-dimensional structure diagram of the universal pipetting connector according to the present utility model;

[0026] Figure 2 The second three-dimensional structure diagram of the universal pipetting connector according to the present utility model;

[0027] Figure 3 The cross-sectional structure diagram of the universal pipetting connector according to the present utility model;

[0028] Figure 4 The exploded three-dimensional structure diagram of the components of the universal pipetting connector according to the present utility model;

[0029] Figure 5 The cross-sectional structure diagram of the universal pipetting connector according to the present utility model when connecting the first infusion bottle;

[0030] Figure 6 The cross-sectional structure diagram of the universal pipetting connector according to the present utility model when connecting the second infusion bottle;

[0031] Figure 7 The cross-sectional structure diagram of the liquid medicine transfer device according to the present utility model;

[0032] Figure 8 Schematic cross-sectional structure diagram of the use state of the medicine dispensing pipetting system according to the present utility model;

[0033] Reference numerals: 10, connecting seat; 11, needle seat; 12, cavity structure; 13, wing portion; 14, second positioning groove; 20, connecting needle tube; 30, sealing cap; 40, sealing plug; 50, fixed clamping arm; 51, clamping end; 52, operating end; 53, guiding portion; 54, clamping portion; 55, first positioning groove; 56, clamping groove; 60, torsion bar spring; 61, connecting section; 62, elastic section; 63, clamping section; 70, sealing cover; 71, through hole; 72, clamping ramp; 73, limiting block; 80, syringe; 81, medicine dispensing needle; 90, needle closed assembly; 101, first infusion bottle; 102, second infusion bottle. Detailed implementation manners

[0034] To better illustrate the purpose, technical solution and advantages of the present utility model, the following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but do not limit the scope of the present utility model.

[0035] As Figures 1 to 6 shown, it is a general-purpose pipetting connector with stable use according to an embodiment of the present utility model. The general-purpose pipetting connector includes: a connecting seat 10, a connecting needle tube 20, a sealing cap 30, a sealing plug 40, a fixed clamping arm 50, an elastic member and a sealing cover 70.

[0036] Specifically, the rear end of the connecting seat 10 is used to connect the medicine dispensing equipment. A cavity structure 12 with a rearward opening is provided at the rear end of the connecting seat 10. The sealing plug 40 is made of an elastic material. The sealing plug 40 plugs the opening of the cavity structure 12, and the sealing cover 70 is fixedly arranged at the rear end of the connecting seat 10. The two end faces of the sealing plug 40 respectively abut between the opening of the cavity structure 12 and the sealing cover 70, so that the sealing plug 40 tightly seals the rear opening of the cavity structure 12. A through hole 71 is provided in the middle of the sealing cover 70, so that the sealing plug 40 can be punctured by the needle tube and communicated with the cavity structure 12.

[0037] Specifically, the front end of the connecting seat 10 is used to connect the infusion bottle. A needle seat 11 is provided in the middle of the front end of the connecting seat 10. The connecting needle tube 20 is fixedly connected to the front end of the needle seat 11, and the inner cavity of the connecting needle tube 20 is communicated with the cavity structure 12. The sealing cap 30 is made of an elastic material. The front end of the sealing cap 30 is closed, and the rear end opening of the sealing cap 30 is fixedly connected to the front end of the needle seat 11, and the connecting needle tube 20 is sleeved within the sealing cap 30.

[0038] Specifically, two wing portions 13 are provided on the connecting base 10. Each wing portion 13 is respectively on two opposite sides of the first side of the connecting base 10. Each wing portion 13 is disposed offset from the central connecting needle tube 20 and extends forward to provide a gripping portion when the connecting needle tube 20 performs a puncture connection. The front portion of the fixing clip arm 50 is a clamping end 51, and the rear portion of the fixing clip arm 50 is an operating end 52. Rotating shafts are respectively provided on the two wing portions 13, and each rotating shaft is hinged with a fixing clip arm 50. In other words, the middle portions of the two fixing clip arms 50 are respectively hinged to the two opposite sides of the second side of the connecting base 10. Among them, the two opposite sides of the first side and the two opposite sides of the second side are perpendicular to each other. Each fixing clip arm 50 can rotate relative to the hinge joint of the connecting base 10. Among them, an elastic member is disposed between the fixing clip arm 50 and the connecting base 10 so that the elastic member applies an inward closing elastic force to the front ends of the two fixing clip arms 50.

[0039] Referring Figure 5 , the general-purpose pipetting connector of this embodiment is connected to the first infusion bottle 101. During use, medical staff hold the two wing portions 13, align the front end of the sealing cap 30 with the mouth of the first infusion bottle 101, and pierce it upward into the bottle. The connecting needle tube 20 will pierce the front end of the sealing cap 30 and the mouth of the first infusion bottle 101 and pierce into the first infusion bottle 101. When the connecting needle tube 20 pierces into the first infusion bottle 101, the sealing cap 30 will be squeezed and deformed backward, accumulating elastic potential energy, and the front end of the sealing cap 30 remains in contact with the mouth of the bottle. When the medical staff pulls out the connecting needle tube 20 from the first infusion bottle 101 through the two wing portions 13, the sealing cap 30 will release the elastic potential energy and stretch forward, and keep the front end of the sealing cap 30 in contact with the mouth of the bottle, and the connecting needle tube 20 will retract into the sealing cap 30.

[0040] It can be seen that for the general-purpose pipetting connector of the present invention, before and after connecting to the infusion bottle, the connecting needle tube 20 is sleeved within the sealing cap 30, thus avoiding the leakage of the liquid medicine.

[0041] Continuing to refer Figure 5, during the process of the general-purpose pipetting connector piercing into the first infusion bottle 101, medical staff can make the clamping ends 51 of the two fixing clamp arms 50 move away from each other by pressing the operating ends 52 of the two fixing clamp arms 50 inward, so that the clamping ends 51 of the two fixing clamp arms 50 cross over the mouth of the first infusion bottle 101. At the same time, the elastic member will accumulate elastic potential energy. When the medical staff releases the pressing pressure, the elastic potential energy of the elastic member will be released, and the two clamping ends 51 will clamp onto the bottleneck of the first infusion bottle 101 and maintain the pressure to clamp the first infusion bottle 101. During the process of the general-purpose pipetting connector being pulled out from the first infusion bottle 101, medical staff can make the clamping ends 51 of the two fixing clamp arms 50 move away from each other by pressing the operating ends 52 of the fixing clamp arms 50 inward, so that the pipetting connector can move downward and away from the mouth of the first infusion bottle 101, thereby separating the pipetting connector from the first infusion bottle 101.

[0042] It can be seen that for the general-purpose pipetting connector of the present utility model, when connected to an infusion bottle, the fixing clamp arms 50 can maintain clamping of the infusion bottle, avoiding separation between the pipetting connector and the infusion bottle during the medicine preparation process, and also avoiding leakage caused by relative movement between the pipetting connector and the infusion bottle.

[0043] Reference Figure 6 , the general-purpose pipetting connector of this embodiment is connected to the second infusion bottle 102. Based on the same principle, during use, medical staff hold the two wings 13 and align the front end of the sealing cap 30 with one of the needle holes at the mouth of the second infusion bottle 102, and insert the connecting needle tube 20 into the second infusion bottle 102. At the same time, the clamping ends 51 of the two fixing clamp arms 50 will clamp onto the bottleneck of the second infusion bottle 102 and maintain the pressure applied to the second infusion bottle 102 under the action of the elastic member.

[0044] It can be seen that due to the provision of the connecting needle tube 20 and the sealing cap 30, the connecting needle tube 20 is not restricted by the specifications of the mouth and needle hole of the infusion bottle and can communicate with infusion bottles of different specifications. At the same time, the setting of the two fixing clamp arms 50, in cooperation with the elastic member, can be adapted to clamp onto the bottlenecks of infusion bottles of different specifications, thereby realizing the connection stability between the pipetting connector and the infusion bottle.

[0045] Reference Figures 1 to 4, Regarding the structure of the fixed clamping arm 50, specifically in this embodiment, at the front end of the clamping end 51 of each fixed clamping arm 50, a clamping position portion 54 protruding inward is provided, so as to facilitate the two fixed clamping arms 50 to be cooperatively buckled to the neck and the inner side of the bottle mouth of the infusion bottle. At the front end of the clamping position portion 54 of each fixed clamping arm 50, a guiding portion 53 bent outward is provided. Since the guiding portion 53 is bent outward, the distance between the guiding portions 53 of the two fixed clamping arms 50 gradually increases from the rear to the front. When the guiding portions 53 of the two fixed clamping arms 50 abut against the bottle mouth of the infusion bottle, the infusion bottle will exert an outward thrust on the two fixed clamping arms 50, so that the two fixed clamping arms 50 overcome the elastic force of the elastic member and clamp to the neck of the infusion bottle.

[0046] Reference Figures 1 to 4 , Regarding the structure of the fixed clamping arm 50, specifically in this embodiment, the operating end 52 of each fixed clamping arm 50 extends toward both sides compared with the middle part of the fixed clamping arm 50, so as to increase the pressing area of the operating end 52. The front end of each wing portion 13 extends toward the middle parts of the two fixed clamping arms 50 on both sides, so as to increase the pressing area of the front end of the wing portion 13. Multiple transverse ridges are provided on the operating end 52 of each fixed clamping arm 50, and multiple transverse ridges are also provided on the front end of each wing portion 13, so as to play a role in anti-slip and ensure the stability of the operation.

[0047] Reference Figures 1 to 4 , Regarding the structure of the fixed clamping arm 50, specifically in this embodiment, the above-mentioned elastic member is a torsion bar spring 60. The torsion bar spring 60 includes a connecting section 61, an elastic section 62, and a clamping section 63. Among them, the connecting section 61 is in a U shape, there are two elastic sections 62, and the rear ends of each elastic section 62 are integrally connected to both ends of the connecting section 61 respectively. The two elastic sections 62 form an elastic force toward the inside. The front end of each elastic section 62 is integrally connected with a clamping section 63 respectively.

[0048] The clamping section 63 is bent in a Z shape. In order to install the elastic member onto the pipetting connector, a second positioning groove 14 is provided on one of the wing portions 13 of the connecting seat 10, and a first positioning groove 55 is respectively provided on the clamping end 51 of each fixed clamping arm 50, and a clamping groove 56 is provided at the front end of each first positioning groove 55. The connecting section 61 of the torsion bar spring 60 is limitedly arranged in the second positioning groove 14, so as to prevent the torsion bar spring 60 from moving in the vertical direction. The two elastic sections 62 of the torsion bar spring 60 are respectively arranged in the first positioning grooves 55 of the two fixed clamping arms 50 respectively, so as to prevent the torsion bar spring 60 from moving in the horizontal direction. The clamping sections 63 of the two elastic sections 62 are respectively arranged in the clamping grooves 56 of the two fixed clamping arms 50 respectively, so that the front ends of the elastic sections 62 are fixed to the clamping ends 51 of the fixed clamping arms 50.

[0049] It should be noted that since the elastic member is integrally formed by the connecting section 61, the elastic section 62 and the clamping section 63, it can apply elastic force to the two fixing clamping arms 50 simultaneously, thus having the characteristics of simple structure, low cost and being suitable for popularization. Due to the settings of the first positioning groove 55, the second positioning groove 14 and the clamping groove 56, the elastic member is fixed to the connecting seat 10 and the fixing clamping arm 50 in a clamping manner, thereby simplifying the installation operation and reducing the installation cost.

[0050] A medicine dispensing pipetting system according to an embodiment of the present invention includes the universal pipetting connector of the above embodiment, and a liquid medicine transfer device. As Figure 7 shown, the liquid medicine transfer device of the medicine dispensing pipetting system of this embodiment. The liquid medicine transfer device includes a syringe 80 and a needle sealing assembly 90 for sealing the medicine dispensing needle 81 at the front end of the syringe 80.

[0051] As Figure 5 shown, as described above in this embodiment, the front end of the pipetting connector has been connected to the inside of the first infusion bottle 101, and at the same time, the fixing clamping arm 50 fixes the pipetting connector to the first infusion bottle 101. The inner cavity structure of the pipetting connector is connected to the inside of the first infusion bottle 101 through the connecting needle tube 20, and the rear end of the inner cavity structure of the pipetting connector is sealed under the action of the sealing plug 40 and the sealing cover 70.

[0052] The rear end of the pipetting connector of this embodiment is used to connect with the liquid medicine transfer device. Specifically, a circumferentially extending clamping slope 72 is provided on the outer edge of the sealing cover 70, and a limiting block 73 is provided at the thicker part of the clamping slope 72 on the outer edge of the sealing cover 70. Two opposite clamping hooks are provided on the outer edge of the front end of the needle sealing assembly 90.

[0053] Referring to Figure 8 , when the medicine dispensing pipetting system of the present invention is in use, medical staff align the front end of the needle sealing assembly 90 of the liquid medicine transfer device with the sealing plug 40 in the middle of the sealing cover 70 at the rear end of the pipetting connector, push the syringe 80 to move so that the medicine dispensing needle 81 passes through the needle sealing assembly 90 and through the sealing plug 40 into the cavity structure 12 of the connecting seat 10, operate the piston rod of the syringe 80 to extract or inject the liquid medicine, and the liquid medicine will circulate between the syringe 80, the medicine dispensing needle 81, the cavity structure 12, the connecting needle tube 20 and the first infusion bottle 101.

[0054] It can be seen that in the medicine dispensing pipetting system of the present invention, through the setting of the pipetting connector, the medicine dispensing between the liquid medicine transfer device and different specifications of drug containers can be realized, and at the same time, the pipetting connector is stably fixed on the drug container, which is convenient for the medicine dispensing operation of the liquid medicine transfer device.

[0055] The above embodiments mainly describe the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A stable and universal pipetting connector, comprising: A connector base (10), in the middle of which a needle base (11) is provided. A cavity structure (12) with a rearward opening and penetrating the connector base (10) is provided at the rear end of the needle base (11). Wings (13) are provided on both sides of the needle base (11) along the outer edge of the connector base (10) in a relative manner; A connecting needle tube (20), fixedly connected to the front end of the needle base (11) and communicating with the cavity structure (12); A sealing cap (30), made of an elastic material, sleeved outside the connecting needle tube (20), and the rear end opening thereof is fixedly connected to the front end of the needle base (11); and, A sealing plug (40), made of an elastic material, fixedly provided at the rear end of the connector base (10) and blocking the rear opening of the cavity structure (12); Characterized in that it further comprises: Two fixed clamping arms (50), the front part thereof is a clamping end (51), the rear part thereof is an operating end (52), and the middle part thereof is hingedly connected between the two wings (13) of the connector base (10); and, An elastic member, acting on the fixed clamping arms (50) to apply an inward closing elastic force to the clamping end (51).

2. The general pipetting connector according to claim 1, characterized in that, Each clamping end (51) of the fixed clamping arm (50) is respectively provided with an outwardly curved guiding portion (53), so that the distance between the two fixed clamping arms (50) at the guiding portion (53) gradually increases from the rear to the front.

3. The general pipetting connector according to claim 2, wherein Each clamping end (51) is respectively provided with an inwardly protruding clamping portion (54), and the guiding portion (53) is arranged at the front end of the clamping portion (54).

4. The general pipetting connector according to claim 1, characterized in that, The operating end (52) of the fixed clamping arm (50) extends towards both sides compared with the middle part of the fixed clamping arm (50), and the front end of each wing (13) extends towards the middle parts of the two fixed clamping arms (50).

5. The general pipetting connector according to claim 1, characterized in that, The elastic member is a torsion bar spring (60), and the torsion bar spring (60) includes a connecting section (61) and elastic force sections (62). There are two elastic force sections (62). The connecting section (61) is in a U shape. The rear end of each elastic force section (62) is integrally connected to both ends of the connecting section (61). The front end of each elastic force section (62) is correspondingly fixedly connected to the clamping end (51) of the fixed clamping arm (50) and applies an inward closing elastic force to the clamping end (51).

6. The general pipetting connector according to claim 5, wherein The torsion bar spring (60) further includes a clamping section (63), the clamping section (63) is integrally connected to the front end of the elastic force section (62), the clamping section (63) is bent in a Z shape, and the fixed clamping arm (50) is provided with a clamping groove (56), and the clamping section (63) is fixedly arranged in the clamping groove (56).

7. The general pipetting connector according to claim 5, characterized in that, Each fixed clamping arm (50) is respectively provided with a first positioning groove (55), each elastic force section (62) on the torsion bar spring (60) is respectively arranged in the first positioning groove (55) of each fixed clamping arm (50), and a second positioning groove (14) is arranged on one of the wings (13) of the connector base (10), and the elastic force section (62) of the torsion bar spring (60) is arranged in the second positioning groove (14).

8. The general pipetting connector according to claim 1, characterized in that, It further includes a sealing cap (70), the sealing cap (70) is fixedly arranged at the rear end of the connecting seat (10), both end faces of the sealing plug (40) respectively abut between the opening of the cavity structure (12) and the sealing cap (70), and a through hole (71) is arranged in the middle of the sealing cap (70).

9. The general pipetting connector according to claim 8, wherein, A circumferentially extending clamping slope (72) is arranged on the outer edge of the sealing cap (70), and a limiting block (73) is arranged at the thicker part of the clamping slope (72) on the outer edge of the sealing cap (70).

10. A medicine dispensing pipetting system, comprising the universal pipetting connector according to any one of claims 1 to 9, characterized in that, It further includes a liquid medicine transfer device, and the liquid medicine transfer device includes a syringe (80) and a needle sealing assembly (90).

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