An infusion set

Abstract

The present invention discloses an infusion set, which relates to the technical field of medical devices. Above the drip chamber of the infusion set, there is a medicine adding extension tube. One end of the medicine adding extension tube is connected with a female connector, and the female connector can be connected with a sealing cap or a medicine adding connector. The connector body of the medicine adding connector has at least one branch tube. An inner sealing cover plate is arranged in the medicine adding port located on the branch tube, and an outer sealing cover plate that fits the end face of the branch tube is arranged outside the medicine adding port. The inner sealing cover plate is formed by splicing a plurality of inner sector-shaped sealing plates, and the arc surface of the inner sector-shaped sealing plate is connected with the inner wall of the medicine adding port. The cover plate body of the outer sealing cover plate is formed by splicing a plurality of outer sector-shaped sealing plates. The outer sector-shaped sealing plates are connected with the corresponding inner sector-shaped sealing plates through corresponding pull ropes. When the outer sealing cover plate is opened, it can drive all the inner sector-shaped sealing plates to turn up to open the medicine adding port. The medicine adding of the present invention is convenient, safe, and low in cost.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an infusion set. Background Art

[0002] A disposable infusion set, a common medical consumable, is sterily processed to establish a passage between a vein and a medicinal solution for intravenous infusion. A disposable infusion set generally consists of eight parts connected together, namely a venous needle or an injection needle, a needle cap, an infusion hose, a medicinal solution filter, a flow regulator, a drip chamber, a bottle stopper puncture device, and an air filter. Some infusion sets also have injection parts, medicine adding ports, etc. The traditional medicine adding position is at the upper end of the drip chamber, where there is a medicine adding port sealed by a latex cap. Each time medicine is injected, a syringe needle must penetrate through the latex cap for medicine adding. The disadvantages of this are as follows: First, it does not conform to the concept of sterility. This cap is exposed to the air and is not routinely disinfected each time medicine is injected; Second, it is easy to cause medical staff to be pricked by the needle. Therefore, there has emerged an infusion set connected with a CLAVE needleless closed infusion adapter for medicine adding. However, the CLAVE adapter is expensive per unit price, greatly increasing the treatment cost of patients. Summary of the Invention

[0003] In view of this, the present invention provides an infusion set to solve the above technical problems.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An infusion set, above the drip chamber of the infusion set, there is a medicine adding extension tube. The end of the medicine adding extension tube is connected with a female connector, and the female connector can be connected with a sealing cap or a medicine adding connector. The connector body of the medicine adding connector has at least one branch tube. Inside the medicine adding port located on the branch tube, there is an inner sealing cover plate. Outside the medicine adding port, there is an outer sealing cover plate that fits the end face of the branch tube. The inner sealing cover plate is formed by splicing a plurality of inner sector-shaped sealing plates, and the arc surface of the inner sector-shaped sealing plate is connected with the inner wall of the medicine adding port. The cover plate body of the outer sealing cover plate is formed by splicing a plurality of outer sector-shaped sealing plates. The outer sector-shaped sealing plates are connected with the corresponding inner sector-shaped sealing plates through corresponding pull ropes. When the outer sealing cover plate opens, it can drive all the inner sector-shaped sealing plates to turn up to open the medicine adding port.

[0006] Further, a connecting arm is connected to the outer sector-shaped sealing plate, and the connecting arm is fixedly connected with the outer peripheral surface of the connector body.

[0007] Further, a pressing arm that can abut against the top surface of the inner sealing cover plate is provided on the inner side surface of the outer sector-shaped sealing plate.

[0008] Further, a guide sleeve is provided inside the medicine adding port. There is a gap between the guide sleeve and the inner wall of the medicine adding port. When the inner sealing cover plate is reset, it fits against the outer end face of the guide sleeve.

[0009] Furthermore, a driving carriage is provided on the branch pipe. The driving carriage is used to drive the connecting arm to deflect outwards, thereby driving the corresponding outer sector-shaped sealing plate to flip.

[0010] Furthermore, the driving carriage includes a driving ring sleeved on the branch pipe. The driving ring abuts against the inner guiding inclined surface of the connecting arm. A plurality of convex platforms are provided on the outer ring surface of the driving ring, and the convex platforms and the connecting arm are alternately distributed.

[0011] Furthermore, an annular groove is provided on the branch pipe. A locking snap ring that is detachably engaged with the annular groove can lock the position of the driving carriage provided on the same branch pipe to keep the medicine adding port in an open state.

[0012] Furthermore, the locking snap ring includes a C-shaped ring and at least two clamping arms connected to the C-shaped ring. The clamping arms act on the corresponding convex platforms.

[0013] Further, the joint body has a connecting portion that is in threaded fit connection with the internal thread of the female joint.

[0014] As can be seen from the above technical solutions, the advantages of the present invention are: convenient and safe medicine addition, and low cost.

[0015] In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. Below, with reference to the drawings, the present invention will be described in further detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the present invention.

[0018] Figure 2 It is another schematic structural diagram of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the medicine adding joint of the present invention in a non-use state.

[0020] Figure 4This is a schematic structural diagram of the medicine adding connector of the present invention in the use state.

[0021] Figure 5 This is the Figure 3 top view of the present invention.

[0022] Figure 6 This is another schematic structural diagram of the medicine adding connector of the present invention.

[0023] Figure 7 This is a schematic structural diagram of the locking snap ring of the medicine adding connector of the present invention.

[0024] List of reference numerals: infusion set 1, medicine adding extension tube 2, female connector 3, sealing cap 4, medicine adding connector 5, connector body 51, connecting portion 511, medicine adding port 512, guide sleeve 513, annular groove 514, inner sealing cover plate 52, inner sector-shaped sealing plate 521, outer sealing cover plate 53, outer sector-shaped sealing plate 531, connecting arm 532, pressing arm 533, pull rope 54, driving carriage 55, driving ring 551, boss 552, locking snap ring 56, C-ring 561, clamping arm 562. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Refer to Figures 1 to 7 for further description of this application. As shown in Figure 1 and Figure 2 an infusion set, a medicine adding extension tube 2 is provided above the drip chamber of the infusion set 1. One end of the medicine adding extension tube 2 is connected with a female connector 3. The female connector 3 can be connected with the sealing cap 4 or the medicine adding connector 5. When the medicine adding function is not used, the female connector 3 is connected with the sealing cap 4. When the medicine adding function is used, the female connector 3 is connected with the medicine adding connector 5.

[0027] Specifically, the medicine adding extension tube 2 is integrally formed with the infusion set 1 or formed by connecting a three-way joint with an external tube. The sealing cap 4 is connected with the external thread of the female connector 3 in a mating manner. The medicine adding connector 5 is connected with the internal thread of the female connector 3 in a mating manner. The female connector 3 can also form an extra-long extended medicine adding tube by connecting with other extension tubes, which is convenient to use.

[0028] As shown in Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, on the joint body 51 of the medicine adding joint 5, there is a connecting portion 511 that is in threaded fit connection with the internal thread of the female joint 3 and at least one branch pipe. Inside the medicine adding port 512 located on the branch pipe, there is an internal sealing cover plate 52. Outside the medicine adding port 512, there is an external sealing cover plate 53 that fits against the end face of the branch pipe. The internal sealing cover plate 52 is formed by splicing a plurality of internal sector-shaped sealing plates 521, and the arc surface of the internal sector-shaped sealing plate 521 is connected to the inner wall of the medicine adding port 512. The cover plate body of the external sealing cover plate 53 is formed by splicing a plurality of external sector-shaped sealing plates 531. The external sector-shaped sealing plates 531 are connected to the corresponding internal sector-shaped sealing plates 521 through corresponding pull ropes 54. When the external sealing cover plate 53 opens, it can drive all the internal sector-shaped sealing plates 521 to turn up to open the medicine adding port 512, thereby exposing the medicine adding channel. The injection end of a syringe without an injection needle is directly inserted into the medicine adding channel for medicine adding, which is safe to use. The internal sealing cover plate 52 and the external sealing cover plate 53 achieve double-layer sealing, so that the sealing effect at the medicine adding port 512 is good. And since the outer side of the external sealing cover plate 53 does not contact the syringe, it is not necessary to perform repeated disinfection before medicine adding, making the medicine adding convenient.

[0029] Preferably in this application, the cover plate body of the external sealing cover plate 53 is formed by splicing four external sector-shaped sealing plates 531.

[0030] Preferably in this application, the diameter of the medicine adding port 512 is larger than the diameter of the medicine adding channel, so that the structures of the external sealing cover plate 53 and the internal sealing cover plate 52 are large and easy to process and manufacture.

[0031] Preferably in this application, there is one or two branch pipes on the joint body 51, which can meet single-port medicine adding or double-port simultaneous medicine adding, and is convenient to use.

[0032] As Figure 3 and Figure 4 shown, a connecting arm 532 is connected to the external sector-shaped sealing plate 531, and the connecting arm 532 is fixedly connected to the outer peripheral surface of the joint body 51.

[0033] Specifically, a connecting arm 532 extending axially is connected to the outer arc surface of the external sector-shaped sealing plate 531, and the external sector-shaped sealing plate 531 is made of a relatively hard material that is not easy to deform.

[0034] On the inner side surface of the external sector-shaped sealing plate 531, there is a pressing arm 533 that can abut against the top surface of the internal sealing cover plate 52.

[0035] Specifically, the pull rope 54 is connected to the outer fan-shaped sealing plate 531 by connecting with the pressure arm 533. Since the inner sealing cover plate 52 is in an upward flipped state when deformed, the pressure arm 533 can be used to quickly reset the inner sealing cover plate 52 to restore its flatness after resetting, so that the inner sealing cover plate 52 has good sealing performance.

[0036] A guide sleeve 513 is disposed in the medicine adding port 512 . There is a gap between the guide sleeve 513 and the inner wall of the medicine adding port 512 . When the inner sealing cover plate 52 is reset, it fits with the outer end surface of the guide sleeve 513 .

[0037] Specifically, the inner diameter of the guide sleeve 513 is the same as the inner diameter of the infusion channel. The guide sleeve 513 cooperates with the injection end of the syringe. The guide sleeve 513 can be deformed to a certain extent during the insertion of the syringe, and then tightly wrapped on the syringe to form a seal, so that the drug solution is not easy to leak out and the drug addition is reliable.

[0038] like Figure 4 and Figure 5 As shown, the branch pipe is provided with a driving carriage 55, which is used to drive the connecting arm 532 to deflect outward, thereby driving the corresponding outer fan-shaped sealing plate 531 to flip. After the outer fan-shaped sealing plate 531 flips, it will drive the corresponding inner fan-shaped sealing plate 521 to flip upward.

[0039] Specifically, the driving carriage 55 includes a driving ring 551 sleeved on the branch pipe, the driving ring 551 abuts against the inner guide slope of the connecting arm 532, and a plurality of bosses 552 are arranged on the outer ring surface of the driving ring 551, the bosses 552 and the connecting arm 532 are alternately distributed, and the bosses 552 are higher than the connecting arm 532. When the bosses 552 are moved by fingers to move the driving ring 551, the connecting arm 532 is deflected outward, thereby driving the corresponding outer fan-shaped sealing plate 531 to flip, and an avoidance channel is formed between the plurality of outer fan-shaped sealing plates 531.

[0040] The branch pipe is provided with an annular groove 514, and a locking snap ring 56 detachably engaged with the annular groove 514 can lock the position of the driving carriage 55 provided on the same branch pipe so that the drug adding port 512 remains in an open state. When the drug adding port 512 needs to remain in an open state for a long time, the locking snap ring 56 is used to prevent the outer sector-shaped sealing plate 531 and the inner sector-shaped sealing plate 521 from pressing against the syringe for a long time, so that the sector-shaped tip position is deformed and it is not conducive to reset sealing use.

[0041] Specifically, the locking snap ring 56 includes a C-shaped ring 561 and at least two clamping arms 562 connected to the C-shaped ring 561, and the clamping arms 562 act on the corresponding bosses 552. Since the locking snap ring 56 acts on the bosses 552, it will not affect the safety of drug addition. The setting of the C-shaped ring 561 enables the locking snap ring 56 to be cooperatively connected with different joint bodies 51, saving resources.

[0042] The clamping arm 562 is in an inverted L shape, and the clamping arm 562 is hooked and connected to the corresponding boss 552, making the structure simple and the clamping reliable.

[0043] Preferably in this application, the locking snap ring 56 has three clamping arms 562, and at least two of the clamping arms 562 act on the bosses 552.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An infusion set, characterized in that, Above the drip chamber of the infusion set (1), there is a medicine adding extension tube (2). One end of the medicine adding extension tube (2) is connected with a female connector (3). The female connector (3) can be connected with a sealing cap (4) or a medicine adding connector (5). The connector body (51) of the medicine adding connector (5) has at least one branch tube. An inner sealing cover plate (52) is arranged in the medicine adding port (512) on the branch tube. An outer sealing cover plate (53) which fits with the end face of the branch tube is arranged outside the medicine adding port (512). The inner sealing cover plate (52) is formed by splicing a plurality of inner sector-shaped sealing plates (521). The arc surface of the inner sector-shaped sealing plate (521) is connected with the inner wall of the medicine adding port (512). The cover plate body of the outer sealing cover plate (53) is formed by splicing a plurality of outer sector-shaped sealing plates (531). A connecting arm (532) is connected to the outer sector-shaped sealing plate (531). The connecting arm (532) is fixedly connected with the outer peripheral surface of the connector body (51). A driving carriage (55) is arranged on the branch tube. The driving carriage (55) includes a driving ring (551) sleeved on the branch tube. The driving ring (551) abuts against the inner guiding inclined surface of the connecting arm (532). A plurality of bosses (552) are arranged on the outer ring surface of the driving ring (551). The bosses (552) and the connecting arm (532) are alternately distributed. The driving carriage (55) is slid to drive the connecting arm (532) to deflect outwards, so as to drive the corresponding outer sector-shaped sealing plate (531) to flip. The outer sector-shaped sealing plate (531) is connected with the corresponding inner sector-shaped sealing plate (521) through a corresponding pull rope (54). When the outer sealing cover plate (53) opens, it can drive all the inner sector-shaped sealing plates (521) to turn up to open the medicine adding port (512). A pressing arm (533) which can abut against the top surface of the inner sealing cover plate (52) is arranged on the inner side surface of the outer sector-shaped sealing plate (531).

2. The infusion set according to claim 1, characterized in that, A guide sleeve (513) is arranged in the medicine adding port (512). There is a gap between the guide sleeve (513) and the inner wall of the medicine adding port (512). When the inner sealing cover plate (52) resets, it fits with the outer end face of the guide sleeve (513).

3. The infusion set according to claim 1, characterized in that, A ring groove (514) is arranged on the branch tube. A locking snap ring (56) which is detachably and snap-fitted with the ring groove (514) can lock the position of the driving carriage (55) arranged on the same branch tube to keep the medicine adding port (512) in an open state.

4. The infusion set according to claim 3, wherein, The locking snap ring (56) includes a C-shaped ring (561) and at least two clamping arms (562) connected with the C-shaped ring (561). The clamping arms (562) act on the corresponding bosses (552).

5. The infusion set according to claim 1, characterized in that, The connector body (51) has a connecting part (511) which is in threaded fit connection with the internal thread of the female connector (3).

Images