Joint assembly for extension tube of micro pump

Abstract

The utility model discloses a connector assembly for a micro pump extension tube, which comprises a first connector and a second connector, the first connector comprises a hollow first main body, the first main body is provided with a first liquid inlet end and a first liquid outlet end, the first liquid inlet end is provided with a circular tube-shaped first inserting part, and the first liquid outlet end is used for being fixedly connected with the micro pump extension tube in a sealing manner; the second connector comprises a hollow second main body, the second connector is provided with a second liquid inlet end and a second liquid outlet end, the second liquid inlet end is used for being fixedly connected with an injector of the micro pump in a sealed mode, and the second liquid outlet end is provided with a second inserting part in a circular tube shape; the second inserting part is suitable for being connected with the first inserting part in an inserted mode, so that the second connector and the first connector are connected in a sealed mode, the micro pump extension tube and the injector are reliably connected, and the risk that the micro pump extension tube is disengaged from the injector is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a connector assembly for a micro pump extension tube. Background Art

[0002] The micro pump is used to accurately, evenly and continuously inject drugs into the patient's body. By reasonably adjusting the injection speed of the drug and strictly controlling the dosage of the drug, the optimal effective concentration of the drug is guaranteed and the occurrence of complications is reduced. The micro pump is easy to operate and can reduce the workload of medical staff and improve rescue efficiency when rescuing critically ill patients.

[0003] In clinical practice, after the micro-pump extension tube is connected to the syringe, adhesive tape is usually used to fix the micro-pump extension tube and the syringe. However, hidden dangers such as loose connection and accidental entanglement cannot be avoided, which can easily cause the micro-pump extension tube to become detached from the syringe, drug waste, and blood return to the patient, and even cause serious consequences such as the patient being unable to receive timely treatment. In addition, fixing the micro-pump extension tube and the syringe with adhesive tape violates the principle of aseptic treatment. Utility Model Content

[0004] One purpose of the utility model is to provide a connector assembly for a micro pump extension tube, which can reliably connect the micro pump extension tube and a syringe, thereby reducing the risk of the micro pump extension tube and the syringe being detached.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a connector assembly for a micro pump extension tube, comprising: a first connector, the first connector comprising a first through body, the first body having a first liquid inlet end and a first liquid outlet end, the first liquid inlet end being provided with a first tubular plug-in portion, the first liquid outlet end being used for sealing and fixing with the micro pump extension tube; a second connector, the second connector comprising a second through body, the second body having a second liquid inlet end and a second liquid outlet end, the second liquid inlet end being used for sealing and fixing with the syringe of the micro pump, the second liquid outlet end being provided with a second tubular plug-in portion; wherein the second plug-in portion is suitable for plugging with the first plug-in portion, so that the second connector and the first connector are sealed and connected.

[0006] Preferably, the second plug-in portion is suitable for extending into the first plug-in portion, and the outer diameter of the second plug-in portion is greater than the inner diameter of the first plug-in portion, so that the second joint is sealed and connected to the first joint.

[0007] Preferably, the first joint further comprises an outer shell and a first pipe hoop, wherein the first pipe hoop is accommodated in the outer shell, and the outer shell and the first main body are detachably connected; a first liquid outlet end of the first main body is provided with a tubular flow guide portion for inserting into the micro pump extension tube, the first pipe hoop and the outer shell are sleeved on the outer circumference of the micro pump extension tube, and are radially opposite to the flow guide portion, and when the outer shell and the first main body are connected, the outer shell radially squeezes the first pipe hoop so that the micro pump extension tube is clamped between the flow guide portion and the first pipe hoop.

[0008] Preferably, the outer shell has an inner cavity for accommodating the first tube clamp, and the side wall of the inner cavity is provided with an extrusion surface; the first tube clamp includes an annular main body portion, and a plurality of pressing pieces extending axially from one side of the main body portion, and when the first main body and the outer shell are connected, the extrusion surface radially presses the pressing piece portion so that the pressing piece portion abuts against the outer wall of the micro pump extension tube.

[0009] Preferably, the first main body further comprises a screw-on portion, which radially protrudes from the outer periphery of the guide portion, and is used for threaded connection with the outer shell, and along the tightening direction in which the outer shell is screwed onto the screw-on portion, the extrusion surface gradually inclines toward the axial direction of the outer shell.

[0010] As a preference, a plurality of the pressing pieces are evenly distributed along the circumference of the main body, and one end of the pressing piece away from the main body extends obliquely toward the axial direction of the first pipe clamp.

[0011] Preferably, the second liquid inlet end of the second body is provided with a tubular connecting portion, which is used to be sleeved on the outer circumference of the syringe, and the second joint also includes a second tube hoop with adjustable aperture, which is sleeved on the outer circumference of the connecting portion so that the connecting portion is clamped between the outer wall of the syringe and the second tube hoop.

[0012] Preferably, the outer diameter of the connecting portion is larger than the outer diameter of the second plug-in portion, and a step surface is formed at the junction of the connecting portion and the second plug-in portion, and the step surface is used to stop the end surface of the first plug-in portion.

[0013] Preferably, the second pipe clamp includes an annular band and an adjusting bolt installed on the band, the band is sleeved on the outer circumference of the connecting portion, and the adjusting bolt is used to adjust the aperture of the band so that the connecting portion is clamped between the outer wall of the syringe and the band.

[0014] As a preference, the first body is integrally formed, and the second body is integrally formed.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The micro-pump extension tube and the syringe of the micro-pump can be reliably connected through the plugged first connector and the second connector, thereby reducing the risk of the micro-pump extension tube and the syringe being detached, and the operation is convenient;

[0017] (2) The first connector clamps the tube wall of the micro pump extension tube through the flow guide portion of the first body and the first tube clamp, so that the first body and the micro pump extension tube are sealed and fixed, thereby improving the connection reliability between the micro pump extension tube and the syringe;

[0018] (3) The second connector clamps the connection portion of the second body through the second tube hoop and the outer wall of the syringe, so that the second body is sealed and fixedly connected to the syringe of the micro pump, thereby improving the connection reliability between the micro pump extension tube and the syringe;

[0019] (4) The first body is integrally formed, and the second body is integrally formed, which is beneficial to improving the sealing performance of the joint assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the connection between the connector assembly, the micro pump extension tube and the syringe according to some embodiments of the present application;

[0021] Figure 2 is a schematic structural diagram of a first body according to some embodiments of the present application;

[0022] Figure 3 It is a schematic structural diagram of a housing and a first pipe clamp sleeved on a micro pump extension tube according to some embodiments of the present application;

[0023] Figure 4 It is a structural schematic diagram of a first main body, a housing and a first pipe clamp sleeved on a micro pump extension tube according to some embodiments of the present application;

[0024] Figure 5 is a schematic diagram of a structure in which a first connector is installed on a micro pump extension tube according to some embodiments of the present application;

[0025] Figure 6 is a schematic diagram of a structure in which a second connector is installed on a syringe according to some embodiments of the present application;

[0026] Figure 7 is a schematic structural diagram of a second joint according to some embodiments of the present application.

[0027] In the figure: 10, first joint; 11, first main body; 111, first liquid inlet end; 112, first liquid outlet end; 113, first plug-in portion; 114, guide portion; 115, screw-on portion; 12, shell; 13, first pipe clamp; 131, main body; 132, pressing portion; 20, second joint; 21, second main body; 211, second liquid inlet end; 212, second liquid outlet end; 213, second plug-in portion; 214, connecting portion; 215, step surface; 22, second pipe clamp; 221, clamp band; 222, adjusting bolt; 30, micro pump; 40, micro pump extension tube; 50, syringe. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0029] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0031] A connector assembly for a micro pump extension tube 40, such as Figure 1-Figure 7 As shown, it includes: a first connector 10 and a second connector 20. The first connector 10 includes a first main body 11 through the middle, the first main body 11 has a first liquid inlet end 111 and a first liquid outlet end 112, the first liquid inlet end 111 is provided with a first tubular plug-in portion 113, and the first liquid outlet end 112 is used to be sealed and fixed with the micro pump extension tube 40. The second connector 20 includes a second main body 21 through the middle, the second main body 21 has a second liquid inlet end 211 and a second liquid outlet end 212, the second liquid inlet end 211 is used to be sealed and fixed with the syringe 50 of the micro pump 30, and the second liquid outlet end 212 is provided with a second tubular plug-in portion 213. The second plug-in portion 213 is suitable for plugging with the first plug-in portion 113, so that the second connector 20 and the first connector 10 are sealed and connected.

[0032] That is to say, Figure 1 As shown, the first body 11 of the first connector 10 is used for sealing connection with the micro pump extension tube 40, and the second body 21 of the second connector 20 is used for sealing connection with the syringe 50, and then the first plug-in portion 113 of the first body 11 is plugged into the second plug-in portion 213 of the second body 21, so that the micro pump extension tube 40 and the syringe 50 can be reliably connected, reducing the risk of the micro pump extension tube 40 and the syringe 50 being detached.

[0033] In addition, the first body 11 and the second body 21 are connected by plugging, which is easy to operate. Specifically, when the first body 11 is connected to the micro pump extension tube 40 and the second body 21 is connected to the syringe 50, the micro pump extension tube 40 and the syringe 50 can be quickly connected or disconnected by plugging and unplugging the first plug-in portion 113 and the second plug-in portion 213 to replace the medicine or perform other operations, thereby reducing the involvement of the micro pump extension tube 40 during connection or disconnection, thereby reducing the patient's discomfort and reducing the risk of the injection needle connected to the micro pump extension tube 40 coming out of the patient's body.

[0034] In an optional embodiment, the second plug-in portion 213 is suitable for extending into the first plug-in portion 113, and the outer diameter of the second plug-in portion 213 is greater than the inner diameter of the first plug-in portion 113, that is, the second plug-in portion 213 and the first plug-in portion 113 are interference-fitted, thereby making the second connector 20 and the first connector 10 sealed and connected. It can be understood that when the micro pump 30 is used for injection, the drug flows through the syringe 50, the second body 21, the first body 11 and the micro pump extension tube 40 in sequence, and the second plug-in portion 213 of the second body 21 is extended into the first plug-in portion 113 of the first body 11, which is conducive to further reducing the risk of drug leakage.

[0035] It is worth mentioning that the first body 11 and the second body 21 can also be further fixed by means of snap fastening or the like, so as to reduce the risk of the micro pump extension tube 40 being separated from the syringe 50 when being pulled by a large external force.

[0036] In some embodiments, Figure 2-Figure 5 As shown, the first joint 10 further includes a housing 12 and a first pipe hoop 13, the first pipe hoop 13 is accommodated in the housing 12, and the housing 12 and the first body 11 are detachably connected. The first liquid outlet 112 of the first body 11 is provided with a tubular flow guide 114 for inserting into the micro pump extension tube 40, the first pipe hoop 13 and the housing 12 are sleeved on the outer periphery of the micro pump extension tube 40, and are arranged radially opposite to the flow guide 114, when the housing 12 and the first body 11 are connected, the housing 12 radially squeezes the first pipe hoop 13, so that the micro pump extension tube 40 is clamped between the flow guide 114 and the first pipe hoop 13.

[0037] That is to say, through the squeezing effect of the shell 12 on the first tube hoop 13, the first tube hoop 13 is pressed against the outer wall of the micropump extension tube 40, and the inner wall of the micropump extension tube 40 is pressed against the outer wall of the guide part 114, so that the first liquid outlet end 112 of the first main body 11 is sealed and fixed to the micropump extension tube 40, and at the same time, the first liquid inlet end 111 of the first main body 11 is sealed and fixed to the second main body 21, thereby improving the connection reliability between the micropump extension tube 40 and the syringe 50.

[0038] In some embodiments, Figure 3 and Figure 4 As shown, the shell 12 has an inner cavity for accommodating the first tube hoop 13, and the side wall of the inner cavity is provided with an extrusion surface; the first tube hoop 13 includes an annular main body 131, and a plurality of pressing pieces 132 axially extending from one side of the main body 131. When the first body 11 and the shell 12 are connected, the extrusion surface radially squeezes the pressing piece 132 so that the pressing piece 132 abuts against the outer wall of the micro pump extension tube 40.

[0039] Specifically, when the shell 12 is connected to the first main body 11, the first tube hoop 13 is accommodated in the shell 12, and at the same time, the extrusion surface on the inner wall of the shell 12 radially squeezes the pressing piece 132, so that the pressing piece 132 is elastically deformed toward the axial direction of the first tube hoop 13, and then the pressing piece 132 is able to abut against the outer wall of the micropump extension tube 40, and exert a force toward the axial direction on the tube wall of the micropump extension tube 40, so that the inner wall of the micropump extension tube 40 is abutted against the guide part 114, thereby realizing the sealed connection between the first liquid outlet end 112 of the first main body 11 and the micropump extension tube 40.

[0040] In an optional embodiment, a plurality of pressing portions 132 are evenly distributed along the circumference of the main body portion 131, and one end of the pressing portion 132 away from the main body portion 131 extends obliquely toward the axial direction of the first tube clamp 13, so that the pressing portion 132 and the guide portion 114 clamp the tube wall of the micro pump extension tube 40 more tightly, thereby making the connection between the first main body 11 and the micro pump extension tube 40 more reliable.

[0041] Further, such as Figure 2 and Figure 5 As shown, the first body 11 also includes a screw-on portion 115, which radially protrudes from the outer periphery of the guide portion 114. The screw-on portion 115 is used for threaded connection with the shell 12. Along the tightening direction of the shell 12 screwed on the screw-on portion 115, the extrusion surface gradually tilts toward the axial direction of the shell 12.

[0042] Specifically, the screw-on portion 115 is provided with one of the internal threads or external threads, the housing 12 is provided with the other of the internal threads or external threads that match, and the pressing piece 132 of the first pipe clamp 13 is installed toward the housing 12. During the process of tightening the screw-on portion 115 of the housing 12 and the first body 11, the end of the housing 12 with a smaller extrusion hole diameter gradually moves from the pressing piece 132 toward the main body 131, thereby squeezing the pressing piece 132, so that the pressing piece 132 is elastically deformed and pressed against the outer wall of the micro pump extension tube 40. It can be understood that by adjusting the screw-on length of the housing 12 and the screw-on portion 115, the extrusion force of the pressing piece 132 on the micro pump extension tube 40 can be adjusted.

[0043] It is worth mentioning that the first body 11 can also be connected and fixed to the housing 12 by other means such as snap connection, interference fit, etc.

[0044] In some embodiments, Figure 6 and Figure 7 As shown, the second liquid inlet end 211 of the second main body 21 is provided with a tubular connecting portion 214, which is used to be sleeved on the outer periphery of the syringe 50. The second joint 20 also includes a second pipe clamp 22 with adjustable aperture, and the second pipe clamp 22 is sleeved on the outer periphery of the connecting portion 214, so that the connecting portion 214 is clamped between the outer wall of the syringe 50 and the second pipe clamp 22.

[0045] That is to say, through the squeezing effect of the second tube clamp 22 on the connecting part 214, the connecting part 214 is pressed against the outer wall of the barrel of the syringe 50, and the head of the syringe 50 extends into the connecting part 214, so that the second liquid inlet end 211 of the second main body 21 is sealed and fixed to the syringe 50, and at the same time, the second liquid outlet end 212 of the second main body 21 is sealed and fixed to the first main body 11, thereby improving the connection reliability between the micro pump extension tube 40 and the syringe 50.

[0046] In some embodiments, the outer diameter of the connecting portion 214 is larger than the outer diameter of the second plug-in portion 213, and a step surface 215 is formed at the intersection of the connecting portion 214 and the second plug-in portion 213. The step surface 215 is used to stop the end face of the first plug-in portion 113, which is convenient for positioning the overlapping length of the first plug-in portion 113 and the second plug-in portion 213 after being plugged in, which is beneficial to the reliable connection of the first body 11 and the second body 21, and has good repeatability.

[0047] In some embodiments, Figure 7 As shown, the second tube clamp 22 includes an annular clamp band 221 and an adjusting bolt 222 installed on the clamp band 221. The clamp band 221 is sleeved on the outer periphery of the connecting portion 214. The adjusting bolt 222 is used to adjust the aperture of the clamp band 221 so that the connecting portion 214 is clamped between the outer wall of the syringe 50 and the clamp band 221.

[0048] In an optional embodiment, the adjusting bolt 222 is a butterfly bolt, which is convenient for hand-tightening operation.

[0049] In some embodiments, the first body 11 and the second body 21 are integrally formed, which is beneficial to improving the sealing performance of the joint assembly.

[0050] The above describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A connector assembly for a micro pump extension tube, characterized in that: include: A first connector, the first connector comprises a first main body having a middle opening, the first main body having a first liquid inlet end and a first liquid outlet end, the first liquid inlet end is provided with a first tubular plug-in portion, and the first liquid outlet end is used for sealingly connecting and fixing with a micro pump extension tube; A second connector, the second connector comprises a second body having a middle opening, the second body having a second liquid inlet end and a second liquid outlet end, the second liquid inlet end being used for sealingly connecting and fixing with the syringe of the micro pump, and the second liquid outlet end being provided with a second tubular plug-in portion; The second plug-in portion is suitable for plugging into the first plug-in portion, so that the second joint is sealed and connected to the first joint.

2. The connector assembly for the micro pump extension tube according to claim 1, characterized in that: The second plug-in portion is suitable for extending into the first plug-in portion, and the outer diameter of the second plug-in portion is greater than the inner diameter of the first plug-in portion, so that the second joint is sealed and connected to the first joint.

3. The connector assembly for the micro pump extension tube according to claim 1, characterized in that: The first joint also includes an outer shell and a first pipe hoop, the first pipe hoop is accommodated in the outer shell, and the outer shell and the first main body are detachably connected; the first liquid outlet end of the first main body is provided with a tubular guide portion for inserting into the micro pump extension tube, the first pipe hoop and the outer shell are sleeved on the outer circumference of the micro pump extension tube, and are radially opposite to the guide portion. When the outer shell and the first main body are connected, the outer shell radially squeezes the first pipe hoop so that the micro pump extension tube is clamped between the guide portion and the first pipe hoop.

4. The connector assembly for the micro pump extension tube according to claim 3, characterized in that: The shell has an inner cavity for accommodating the first tube hoop, and the side wall of the inner cavity is provided with an extrusion surface; the first tube hoop includes an annular main body portion, and a plurality of pressing pieces extending axially from one side of the main body portion, and when the first main body and the shell are connected, the extrusion surface radially presses the pressing piece portion so that the pressing piece portion abuts against the outer wall of the micro pump extension tube.

5. The connector assembly for the micro pump extension tube according to claim 4, characterized in that: The first body also includes a screw-on portion, which radially protrudes from the outer circumference of the guide portion and is used for threaded connection with the shell. Along the tightening direction of the shell screwed on the screw-on portion, the extrusion surface gradually tilts toward the axial direction of the shell.

6. The connector assembly for the micro pump extension tube according to claim 4, characterized in that: The plurality of pressing pieces are evenly distributed along the circumference of the main body, and one end of the pressing piece away from the main body extends obliquely toward the axial direction of the first pipe clamp.

7. The connector assembly for a micro pump extension tube according to claim 1, characterized in that: The second liquid inlet end of the second main body is provided with a tubular connecting portion, which is used to be sleeved on the outer circumference of the syringe. The second joint also includes a second tube hoop with adjustable aperture, which is sleeved on the outer circumference of the connecting portion so that the connecting portion is clamped between the outer wall of the syringe and the second tube hoop.

8. The connector assembly for the micro pump extension tube according to claim 7, characterized in that: The outer diameter of the connecting portion is greater than the outer diameter of the second plug-in portion. A step surface is formed at the intersection of the connecting portion and the second plug-in portion. The step surface is used to stop the end surface of the first plug-in portion.

9. The connector assembly for the micro pump extension tube according to claim 7, characterized in that: The second pipe clamp includes an annular band and an adjusting bolt installed on the band, the band is sleeved on the outer periphery of the connecting portion, and the adjusting bolt is used to adjust the aperture of the band so that the connecting portion is clamped between the outer wall of the syringe and the band.

10. The connector assembly for a micro pump extension tube according to any one of claims 1 to 9, characterized in that: The first body is integrally formed, and the second body is integrally formed.

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