Novel infusion apparatus

Abstract

The utility model relates to the technical field of infusion apparatuses, and discloses a novel infusion apparatus which comprises a first infusion tube and a second infusion tube, the bottom end of the first infusion tube is fixedly connected with a first connecting piece, the top end of the second infusion tube is fixedly connected with a second connecting piece, and the outer surface of the first infusion tube is fixedly connected with a drip chamber. A four-way connecting assembly is movably connected between the first infusion tube and the second infusion tube, a regulating valve is movably connected to one side of the outer surface of the second infusion tube, a third connecting piece is fixedly connected to the end, away from the second connecting piece, of the second infusion tube, and an injection head is fixedly connected to the end, away from the second infusion tube, of the third connecting piece. Through the design of the four-way connecting assembly, an injection connector is added, an infusion pipeline is shortened, the self-closing function is achieved through the design of the infusion connector assembly and the hydraulic connector assembly, after a pump pipe is pulled out, a channel is automatically closed, after the pump pipe is inserted, the channel is automatically opened, and the situation of blood return during pump pipe replacement is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion sets, and more specifically to a novel infusion set. Background Art

[0002] An infusion set is a common medical device product. After sterilization processing, it is used to establish a channel between the vein and the medicine for intravenous infusion. The infusion set is generally composed of an intravenous needle or injection needle, a needle cap, an infusion hose, a medicine filter drip pot and other parts.

[0003] The shortcomings of the existing technology: The infusion pipeline in the existing technology usually adopts a three-way connection. When a patient needs to be injected with multiple injections, such as patients with poor microcirculation, who need fluid replacement, some patients need pressors, and sometimes three or four pressors (dopamine hydrochloride injection, norepinephrine bitartrate injection, epinephrine hydrochloride injection, metaraminol bitartrate injection), etc., are needed to stabilize the blood pressure. At this time, the infusion pipeline needs to provide multiple injection interfaces. The three-way infusion pipeline is usually used more frequently, which can easily cause the infusion pipeline to be too long and is very inconvenient to use. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a new infusion set to solve the problems existing in the above background technology.

[0005] The utility model provides the following technical solutions: a new infusion device, comprising a first infusion tube and a second infusion tube, wherein the bottom end of the first infusion tube is fixedly connected to a first connecting piece, the top end of the second infusion tube is fixedly connected to a second connecting piece, the outer surface of the first infusion tube is fixedly connected to a drip bucket, a four-way connecting assembly is movably connected between the first infusion tube and the second infusion tube, a regulating valve is movably connected to one side of the outer surface of the second infusion tube, an end of the second infusion tube away from the second connecting piece is fixedly connected to a third connecting piece, and an end of the third connecting piece away from the second infusion tube is fixedly connected to an injection head.

[0006] Preferably, the four-way connection assembly comprises a protective shell, a four-way tube is fixedly connected to the middle of the inner cavity of the protective shell, and infusion connector assemblies are fixedly connected to the outer surface of the protective shell on all sides.

[0007] Preferably, the infusion connector assembly includes a main pipeline, a connecting ring is fixedly connected to the bottom end of the main pipeline, a connecting block is fixedly connected to the top end of the main pipeline, a sealing groove is provided in the middle part of the inner cavity of the main pipeline, a liquid through hole is opened at the bottom end of the main pipeline, and a hydraulic connector assembly is fixedly connected to the middle part of the inner cavity of the main pipeline.

[0008] Preferably, the diameter of the inner cavity of the main pipeline gradually decreases from bottom to top and forms a funnel shape.

[0009] Preferably, the hydraulic joint assembly includes a mounting plate, support rods are fixedly connected to the outer surface of the mounting plate at equal distances around, a buffer is fixedly connected to the middle of the top of the mounting plate, a return spring is sleeved on the outer surface of the buffer, a positive pressure block is fixedly connected to the top of the buffer, a push rod is fixedly connected to the top of the positive pressure block, and a sealing ring is fixedly connected to the outer surface of the positive pressure block.

[0010] Preferably, the support rod is fixedly connected to the inner wall of the connecting collar, and the buffer and the return spring are located at the central axis of the inner cavity of the main pipeline.

[0011] Preferably, the diameter of the cross section of the positive pressure block gradually decreases from bottom to top to form a funnel shape, the positive pressure block is movably connected to the inner cavity of the main pipeline, the position of the sealing ring corresponds to the position of the sealing groove, and the sealing ring is movably connected to the inner cavity of the sealing groove.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model increases the injection interface by providing a four-way connection component. When the patient needs to be injected with multiple injections, the multiple injection interfaces can shorten the infusion pipeline, avoid entanglement caused by too many pipelines, affect the operation of medical staff, etc., making the infusion set more convenient to use.

[0014] 2. The utility model is provided with a hydraulic joint assembly to avoid blood backflow when changing the pump tube, and adds the design of a positive pressure block and a reset spring to realize the self-closing function. After the pump tube is pulled out, the positive pressure block is automatically reset by the reset spring, the sealing ring and the sealing groove are closed, and the passage is automatically closed. After the pump tube is inserted, the ejector rod is pushed by the syringe to move the positive pressure block downward and open automatically, driving the sealing ring to disengage from the sealing groove, so that the main pipeline and the liquid through hole are connected and communicated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the four-way connection assembly of the utility model.

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the infusion connector assembly of the utility model.

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the hydraulic joint assembly of the utility model.

[0019] Figure 5 For the utility model Figure 3 A schematic diagram of the structure at center

[0020] The accompanying drawings are marked as follows: 1. first infusion tube; 2. second infusion tube; 3. first connecting piece; 4. second connecting piece; 5. drip bucket; 6. four-way connecting assembly; 61. protective shell; 62. four-way tube; 63. infusion connector assembly; 631. main pipeline; 632. connecting ring; 633. connecting block; 634. sealing groove; 635. liquid through hole; 636. hydraulic connector assembly; 6361. mounting plate; 6362. support rod; 6363. buffer; 6364. reset spring; 6365. positive pressure block; 6366. push rod; 6367. sealing ring; 7. regulating valve; 8. third connecting piece; 9. injection head. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The new infusion device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0022] The utility model provides a new infusion device, such as Figure 1 As shown, it includes a first infusion tube 1 and a second infusion tube 2, the bottom end of the first infusion tube 1 is fixedly connected with a first connecting piece 3, the top end of the second infusion tube 2 is fixedly connected with a second connecting piece 4, the first connecting piece 3 and the second connecting piece 4 are used to ensure the tightness of the connection between the first infusion tube 1 and the second infusion tube 2, the outer surface of the first infusion tube 1 is fixedly connected with a drip bucket 5, the first infusion tube 1 and the second infusion tube 2 are movably connected with a four-way connecting assembly 6, one side of the outer surface of the second infusion tube 2 is movably connected with a regulating valve 7, the infusion speed of the second infusion tube 2 is controlled by the regulating valve 7, the end of the second infusion tube 2 away from the second connecting piece 4 is fixedly connected with a third connecting piece 8, and the end of the third connecting piece 8 away from the second infusion tube 2 is fixedly connected with an injection head 9.

[0023] Further, such as Figure 2 As shown, the four-way connection assembly 6 includes a protective shell 61, and a four-way tube 62 is fixedly connected to the middle part of the inner cavity of the protective shell 61. The four-way tube 62 is protected by the protective shell 61 to avoid damage that affects the infusion effect. The outer surface of the protective shell 61 is fixedly connected with an infusion connector assembly 63 on all sides. The design of the four-way connector is adopted to increase the injection interface. When the patient needs to inject multiple injections, the infusion pipeline can be shortened by using multiple infusion connector assemblies 63.

[0024] Further, such as Figure 3As shown, the infusion connector assembly 63 includes a main pipeline 631, the inner diameter of the main pipeline 631 gradually decreases from bottom to top and is funnel-shaped, a connecting ring 632 is fixedly connected to the bottom end of the main pipeline 631, and a connecting block 633 is fixedly connected to the top end of the main pipeline 631. The main pipeline 631 is conveniently connected through the connecting ring 632 and the connecting block 633. A sealing groove 634 is provided in the middle of the inner cavity of the main pipeline 631, a liquid through hole 635 is opened at the bottom end of the main pipeline 631, and a hydraulic connector assembly 636 is fixedly connected to the middle of the inner cavity of the main pipeline 631, and a self-closing function is realized through the hydraulic connector assembly 636.

[0025] Further, such as Figure 4 As shown, the hydraulic joint assembly 636 includes a mounting plate 6361, and support rods 6362 are fixedly connected to the outer surface of the mounting plate 6361 at equal distances, and the support rods 6362 are fixedly connected to the inner wall of the connecting ring 632. The mounting plate 6361 and the support rods 6362 ensure that the hydraulic joint assembly 636 is firmly installed in the inner cavity of the main pipe 631. A buffer 6363 is fixedly connected to the middle of the top of the mounting plate 6361, and a return spring 6364 is sleeved on the outer surface of the buffer 6363. The buffer 6363 and the return spring 6364 are located at the central axis of the inner cavity of the main pipe 631. The stability of the return spring 6364 during movement is ensured by the buffer 6363. A positive pressure block 6365 is fixedly connected to the top of the buffer 6363, and a push rod 6366 is fixedly connected to the top of the positive pressure block 6365. A sealing ring 6367 is fixedly connected to the outer surface of the positive pressure block 6365.

[0026] Further, such as Figure 5 As shown, the diameter of the cross section of the positive pressure block 6365 gradually decreases from bottom to top to form a funnel shape. The positive pressure block 6365 is movably connected to the inner cavity of the main pipeline 631. When the syringe is connected to the infusion connector assembly 63, the liquid is pushed. The pressure of the liquid causes the push rod 6366 to push the positive pressure block 6365 to move in the inner cavity of the main pipeline 631. The funnel-shaped design allows the positive pressure block 6365 to move downward, creating a gap between the positive pressure block 6365 and the main pipeline 631, allowing the liquid to enter the infusion device through the liquid through hole 635. The position of the sealing ring 6367 corresponds to the position of the sealing groove 634. The sealing ring 6367 is movably connected to the inner cavity of the sealing groove 634. The positive pressure block 6365 is tightly connected to the inner wall of the main pipeline 631 through the sealing ring 6367 and the sealing groove 634 to ensure tightness. When the liquid injection is completed, the positive pressure block 6365 is reset by the buffer 6363 and the reset spring 6364, so that the passage is automatically closed to avoid blood return when changing the pump tube.

[0027] The working principle of the utility model is as follows: firstly, the first infusion tube 1 and the second infusion tube 2 are connected to the four-way connection assembly 6 through the first connecting piece 3 and the second connecting piece 4. During use, the liquid in the infusion connector assembly 63 is transmitted through the four-way tube 62. When the patient needs to inject multiple injections, the infusion pipeline is shortened through multiple infusion connector assemblies 63, and the syringe is connected to the main pipeline 631 through the connecting block 633. After the connection is completed, the liquid in the syringe is pushed, and the push liquid exerts pressure on the push rod 6366, and the push rod 6366 pushes the positive pressure block 6365 to move downward in the inner cavity of the main pipeline 631. When the positive pressure block 6365 moves, the inner cavities of the positive pressure block 6365 and the main pipeline 631 are both funnel-shaped. When the positive pressure block 6365 moves downward, the buffer 6363 and the return spring 6364 are compressed, so that a gap is generated between the positive pressure block 6365 and the main pipeline 631, and the injection liquid enters the infusion set through the liquid through hole 635. After the injection is completed, the syringe is removed, and the positive pressure block 6365 is reset by the buffer 6363 and the return spring 6364, so that the passage is automatically closed to avoid blood return when changing the pump tube. At the same time, the design of the infusion connector assembly 63 is added to shorten the infusion pipeline, making the infusion set more convenient to use.

[0028] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0029] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A novel infusion set, comprising a first infusion tube (1) and a second infusion tube (2), characterized in that: The bottom end of the first infusion tube (1) is fixedly connected to a first connecting piece (3), the top end of the second infusion tube (2) is fixedly connected to a second connecting piece (4), the outer surface of the first infusion tube (1) is fixedly connected to a drip bucket (5), a four-way connecting assembly (6) is movably connected between the first infusion tube (1) and the second infusion tube (2), a regulating valve (7) is movably connected to one side of the outer surface of the second infusion tube (2), an end of the second infusion tube (2) away from the second connecting piece (4) is fixedly connected to a third connecting piece (8), and an end of the third connecting piece (8) away from the second infusion tube (2) is fixedly connected to an injection head (9).

2. A novel infusion set according to claim 1, characterized in that: The four-way connection assembly (6) comprises a protective shell (61), a four-way tube (62) is fixedly connected to the middle of the inner cavity of the protective shell (61), and infusion connector assemblies (63) are fixedly connected to the outer surface of the protective shell (61) on all sides.

3. A novel infusion set according to claim 2, characterized in that: The infusion connector assembly (63) comprises a main pipeline (631), the bottom end of the main pipeline (631) is fixedly connected to a connecting ring (632), the top end of the main pipeline (631) is fixedly connected to a connecting block (633), a sealing groove (634) is provided in the middle of the inner cavity of the main pipeline (631), a liquid through hole (635) is opened at the bottom end of the main pipeline (631), and a hydraulic connector assembly (636) is fixedly connected to the middle of the inner cavity of the main pipeline (631).

4. A novel infusion set according to claim 3, characterized in that: The diameter of the inner cavity of the main pipeline (631) gradually decreases from bottom to top and forms a funnel shape.

5. A novel infusion set according to claim 3, characterized in that: The hydraulic joint assembly (636) includes a mounting plate (6361), the outer surface of which is fixedly connected with support rods (6362) at equal distances around, a buffer member (6363) is fixedly connected to the middle of the top of the mounting plate (6361), a return spring (6364) is sleeved on the outer surface of the buffer member (6363), a positive pressure block (6365) is fixedly connected to the top of the buffer member (6363), a push rod (6366) is fixedly connected to the top of the positive pressure block (6365), and a sealing ring (6367) is fixedly connected to the outer surface of the positive pressure block (6365).

6. A novel infusion set according to claim 5, characterized in that: The support rod (6362) is fixedly connected to the inner wall of the connecting ring (632) around, and the buffer (6363) and the return spring (6364) are located at the central axis of the inner cavity of the main pipeline (631).

7. A novel infusion set according to claim 5, characterized in that: The diameter of the cross section of the positive pressure block (6365) gradually decreases from bottom to top and is funnel-shaped. The positive pressure block (6365) is movably connected to the inner cavity of the main pipeline (631). The position of the sealing ring (6367) corresponds to the position of the sealing groove (634). The sealing ring (6367) is movably connected to the inner cavity of the sealing groove (634).

Images