Connector assembly for medical tubing leaching

Abstract

The utility model provides a kind of for medical pipeline extraction joint assembly, belong to medical instrument technical field.It has solved the existing medical pipeline extraction when pipeline connection is inconvenient, the problem of foreign matter interference test when extraction.This is for medical pipeline extraction joint assembly, including connector, connector is equipped with for being connected with the plug-in part of medical pipeline, joint assembly still includes the joint ring of being equipped with on connector and the fixing clamp for fixing medical pipeline, joint ring is equipped with for making joint ring and fixing clamp mutually draw close along the length direction of connector connection structure.Glass tube or stainless steel tube or ceramic tube is used as connector, avoid other material interference test in extraction process;Plug-in part is conical, ensure that plug-in part and the joint of different medical pipeline of size adaptation are matched, and good sealing.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology and relates to a connector assembly for medical tubing immersion. Background Technology

[0002] Medical tubing is widely used in the medical field, including fluid management, drainage, anesthesia and respiratory equipment, intravenous infusion, catheter instruments, peristaltic pumps, and dialysis tubing. According to industry standards, the chemical properties of tubing often need to be tested, which requires extraction. For commonly used tubing, extraction can be performed by simulating clinical usage conditions. However, some tubing (such as CRRT tubing) has a complex structure with numerous branches and fittings, and the treatment parameters used may vary. Currently, there are two methods for tubing extraction: 1. Series extraction: All tubing is connected in series into a single tubing, all branches are closed, and a single constant flow pump powers the extraction solution; 2. Parallel extraction: Depending on the number of pump tubes, the tubing is connected into several closed loops, allowing the extraction solution to flow in each loop.

[0003] Because series extraction requires connecting numerous tubing lines, the number of fittings and tubing lines needs to be controlled during the product design phase; otherwise, there may not be enough connectors to connect the corresponding tubing lines. Furthermore, since the purpose of extraction is to quantitatively analyze the leachates from the tubing, it is essential to ensure that test materials do not contaminate the tubing. Parallel extraction utilizes the existing pump tubing, improving extraction efficiency, but it also introduces two challenges: firstly, the increased number of inlet and outlet ports for the extraction solution makes connection more difficult; secondly, this extraction method requires collecting clinically recommended extraction rates (clinical flow rates), and different tubing lines need to collect fluid flow rates for different treatment modes, making it more complex. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a connector assembly for medical tubing extraction that can achieve sealed connection with various pipe fittings.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A connector assembly for extracting medical tubing includes a connector having a plug portion for connecting to a medical tubing. The connector assembly also includes a connector ring on the connector and a fixing clamp for securing the medical tubing. A connecting structure is provided between the connector ring and the fixing clamp to bring the connector ring and the fixing clamp closer together along the length of the connector.

[0007] In use, the connector ring is installed onto the connecting pipe, and the retaining clip is fixed to the medical tubing. Then, the insertion part is connected to the medical tubing. Finally, the connecting structure brings the connector ring and the retaining clip closer together along the length of the connecting pipe, achieving a sealed connection between the insertion part and the medical tubing. The insertion part can be assembled with different medical tubing connectors of suitable size.

[0008] In the above-mentioned connector assembly for medical tubing extraction, the connection structure includes a perforation on the connector ring, a cable tie passing through the perforation, and an insertion hole on the fixing clip. The cable tie has a plurality of locking teeth evenly distributed on one side, and a locking groove is formed between two adjacent locking teeth. The insertion hole has a locking tongue that engages with the locking groove.

[0009] When connecting, the side of the cable tie with the locking teeth should face the locking tongue and be inserted into the through hole, so that the locking tongue and the locking groove can engage. At this time, the cable tie can only move in one direction. When the cable tie moves in one direction, the connector ring and the fixing clamp move closer to each other along the length of the pipe.

[0010] To improve connection stability, a perforated ring array is distributed on the fixing clip, with the number of insertion holes and perforations being equal and corresponding one-to-one, and each perforation is fitted with a cable tie.

[0011] In the aforementioned connector assembly for medical tubing extraction, the fixing clamp is provided with a slot extending along the length of the tubing, and a switch extending along its length is provided in the slot. The switch is connected to the fixing clamp through two symmetrically arranged connecting parts. The insertion hole is located inside the switch, and the locking tongue is provided on the inner wall of the switch near the end of the tubing. When the end of the switch away from the tubing is pressed inward, the end of the switch near the tubing can be moved outward, making it convenient for the locking tongue to exit from the locking groove when unlocking.

[0012] In the above-mentioned connector assembly for medical tubing extraction, the connecting part extends along the length of the slot, the end of the connecting part near the pipe is fixedly connected to the fixing clamp, the end of the connecting part away from the pipe is fixedly connected to the switch, the switch has a follower part extending between the two connecting parts, and the locking tongue is located on the inner side of the follower part near the pipe end.

[0013] In normal operation, the clamp, switch, and follower are relatively fixed. At this time, the locking tongue located inside the follower can engage with the locking groove on the cable tie. When the cable tie needs to be removed, press the end of the switch away from the connector inward. The end of the connector away from the connector moves inward, while the position of the end closer to the connector remains basically unchanged. This causes the end of the follower closer to the connector to move outward, disengaging the locking tongue from the locking groove.

[0014] In the aforementioned connector assembly for immersion of medical tubing, the retaining clamp has an opening on its side for the medical tubing to enter. The width of the opening gradually decreases from the outside to the inside, and the width at the smallest point of the opening is smaller than the diameter of the through hole inside the retaining clamp. The gradual decrease in the width of the opening from the outside to the inside facilitates the placement of the medical tubing into the through hole of the retaining clamp.

[0015] In the above-mentioned connector assembly for medical tubing extraction, the connector is provided with an annular groove, and the inner side of the connector ring is provided with a plurality of protrusions extending into the annular groove, the width of the protrusions being equal to the width of the annular groove.

[0016] In the above-mentioned connector assembly for medical tubing extraction, the inner side of the connector ring is provided with several circumferential and gradually inwardly extending elastic portions. When compressed, the free ends of the elastic portions can swing outward, and each elastic portion has a protrusion on its free end.

[0017] The plug part is conical. During installation, the plug part of the connector is inserted into the connector ring. As the plug part gradually enters, the protrusion is squeezed by the plug part, causing the free end of the elastic part to swing outward until the protrusion enters the annular groove. At this time, the elastic part returns to its original position, so that the protrusion is stuck in the annular groove, thus realizing the connection between the connector ring and the connector.

[0018] In the aforementioned connector assembly for medical tubing extraction, the connector is a glass tube.

[0019] In the aforementioned connector assembly for medical tubing extraction, the connector is a stainless steel tube.

[0020] In the aforementioned connector assembly for medical tubing extraction, the connector is a ceramic tube.

[0021] Compared with existing technologies, the connector assembly for medical tubing extraction has the following advantages: it uses glass, stainless steel, or ceramic tubes as connectors to avoid interference from other substances during the extraction process; the conical shape of the insertion part ensures that the insertion part is compatible with connectors of different sizes of medical tubing, and provides good sealing. Attached Figure Description

[0022] Figure 1 This is a partial structural diagram of a connector assembly used for medical tubing immersion.

[0023] Figure 2 This is a schematic diagram of the connector assembly used for medical tubing immersion.

[0024] Figure 3 This is a diagram showing the usage status of connector assemblies used for medical tubing immersion.

[0025] Figure 4 This is a structural diagram of the fixing clip in the connector assembly.

[0026] Figure 5 This is a schematic diagram of the joint ring in the joint assembly.

[0027] Figure 6 This is a schematic diagram of the pipe in the connector assembly.

[0028] In the diagram, 1 is the connector; 11 is the plug-in part; 12 is the annular groove; 2 is the connector ring; 21 is the perforation; 22 is the protrusion; 23 is the elastic part; 3 is the fixing clip; 31 is the locking tongue; 32 is the slot; 33 is the switch; 34 is the connecting part; 35 is the follower part; 36 is the opening; 4 is the cable tie; 41 is the locking tooth; and 42 is the locking groove. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figure 1 and Figure 2 The connector assembly shown for medical tubing immersion includes a connector 1, both ends of which are insertion portions 11 for connection to medical tubing, such as... Figure 5 As shown, the two plug-in parts 11 are coaxially arranged and the plug-in parts 11 are conical. The outer diameter of the two plug-in parts 11 gradually increases from the far end to the near end of the two, making the entire connector 1 spindle-shaped. The connector 1 has an axially arranged circular through hole. In this embodiment, the connector 1 is a glass tube.

[0031] In other embodiments, the connector 1 may be a stainless steel pipe.

[0032] In other embodiments, the connecting pipe 1 may also be a ceramic pipe.

[0033] like Figure 1 and Figure 2 As shown, the connector assembly also includes a connector ring 2 disposed on the connector 1 and a fixing clip 3 for fixing the medical tubing. There are two fixing clips 3, which are respectively located on both sides of the connector ring 2. A connecting structure is provided between the connector ring 2 and the fixing clip 3 to bring the connector ring 2 and the fixing clip 3 closer to each other along the length direction of the connector 1.

[0034] like Figure 6 As shown, an annular groove 12 is provided in the middle of the connector 1, and two insertion parts 11 are symmetrically arranged on both sides of the annular groove 12. To facilitate the insertion of the connector ring 2 onto the connector 1, as shown... Figure 5 As shown, the inner side of the connector ring 2 is provided with a plurality of protrusions 22 extending into the annular groove 12. In this embodiment, there are 4 protrusions 22 distributed in a circular array, and the width of the protrusions 22 is equal to the width of the annular groove 12.

[0035] For easy card insertion, such as Figure 5 As shown, the inner side of the connector ring 2 is provided with four circumferentially extending inward elastic parts 23. The four elastic parts 23 are arranged in a ring array. When subjected to outward compressive force, the free end of the elastic part 23 can swing outward. Each elastic part 23 has a protrusion 22 on its free end. During installation, one of the plug parts 11 of the connector 1 is inserted into the through hole in the middle of the connector ring 2. As the insertion gradually goes deeper, the protrusion 22 and the elastic part 23 are gradually moved outward by the pressure of the outer surface of the plug part 11 until the protrusion 22 passes the maximum outer diameter of the plug part 11 and enters the annular groove 12. At this time, the elastic part 23 is reset and the protrusion 22 is stably locked into the annular groove 12.

[0036] like Figure 1 and Figure 2 As shown, the connection structure includes a through hole 21 on the connector ring 2, a cable tie 4 passing through the through hole 21, and an insertion hole on the fixing clip 3. Each fixing clip 3 is connected to the connector ring 2 through two cable ties 4. The two cable ties 4 connected to the same fixing clip 3 are symmetrically distributed along the central axis of the connector 1, and the cable ties 4 connected to different fixing clips 3 are staggered.

[0037] Specifically, such as Figure 5 As shown, the connector ring 2 has four through holes 21 arranged in a circular array, labeled as No. 1, No. 2, No. 3, and No. 4. No. 1 and No. 3 are arranged opposite each other, and No. 2 and No. 4 are arranged opposite each other. The cable ties 4 inserted into the through holes 1 and No. 3 are connected to one of the fixing clips 3, and the cable ties 4 inserted into the through holes 21 are connected to the other fixing clip 3. The cable ties 4 have an end end, the size of which is larger than the diameter of the through hole 21. When the cable ties 4 are inserted into the through hole 21, the end end of the cable ties 4 can be limited by the through hole 21.

[0038] To facilitate the one-way snap-fit ​​between cable ties 4 and fixing clips 3, such as Figure 1-3 As shown, a plurality of locking teeth 41 are evenly provided on one side of the cable tie 4, and a locking groove 42 is formed between two adjacent locking teeth 41. A locking tongue 31 is provided in the insertion hole to engage with the locking groove 42. During connection, the side of the cable tie 4 with locking teeth 41 faces the locking tongue 31 and is inserted into the insertion hole after passing through the through hole 21, so that the locking tongue 31 engages with the locking groove 42. At this time, the cable tie 4 can only move in one direction. When the cable tie 4 moves in one direction, the connector ring 2 and the fixing clip 3 move closer to each other along the length of the connector 1. Each cable tie 4 corresponds to one insertion hole.

[0039] To facilitate removing cable tie 4 from the socket, as follows: Figure 4As shown, the fixing clamp 3 is provided with a slot 32 extending along the length direction of the connecting pipe 1. There are two slots 32 and they are arranged opposite each other. Each slot 32 is provided with a switch 33 extending along its length direction. The switch 33 is long and strip-shaped. The switch 33 is connected to the fixing clamp 3 through two symmetrically arranged connecting parts 34. The insertion hole is located inside the switch 33. The locking tongue 31 is located on the inner wall of the end of the switch 33 near the connecting pipe 1. When the end of the switch 33 away from the connecting pipe 1 is pressed inward, the end of the switch 33 near the connecting pipe 1 can be moved outward, so that the locking tongue 31 can be withdrawn from the locking groove 42.

[0040] like Figure 4 As shown, the connecting part 34 is elongated and extends along the length of the slot 32. The end of the connecting part 34 near the pipe 1 is fixedly connected to the fixing clip 3, and the end of the connecting part 34 away from the pipe 1 is fixedly connected to the switch 33. The switch 33 has a follower part 35 extending between the two connecting parts 34. The length of the follower part 35 is not less than the length of the connecting part 34. The locking tongue 31 is located on the inner side of the follower part 35 near the pipe 1.

[0041] In normal operation, the fixing clip 3, switch 33, and follower part 35 are relatively fixed. At this time, the locking tongue 31 located inside the follower part 35 can engage with the locking groove 42 on the cable tie 4. When it is necessary to remove the cable tie 4, press the end of the switch 33 away from the connector 1 inward. The end of the connecting part 34 away from the connector 1 moves inward, while the position of its end closer to the connector 1 remains basically unchanged. This will cause the end of the follower part 35 close to the connector 1 to move outward, causing the locking tongue 31 to disengage from the locking groove 42.

[0042] To facilitate the insertion of medical tubing into clamp 3, such as Figure 4 As shown, the side of the fixing clip 3 has an opening 36 for medical tubing to enter. The width of the opening 36 gradually decreases from the outside to the inside, and the width of the opening 36 at its minimum point is smaller than the diameter of the through hole inside the fixing clip 3.

[0043] A connector is fixed at one end of the medical tubing. During installation, the medical tubing is placed into the through hole of the fixing clamp 3 through the opening 36. The connector on the medical tubing is located between the fixing clamp 3 and the connecting pipe 1. Then, the insertion part 11 of the connecting pipe 1 with the connector ring 2 is inserted into the connector of the medical tubing, so that the insertion part 11 mates with the connector of the medical tubing. Then, the cable tie 4 is inserted into the through hole 21 and the insertion hole in sequence. Then, the cable tie 4 is tightened so that the fixing clamp 3 is pressed against the connector of the medical tubing, thereby achieving a sealed connection between the connecting pipe 1 and the medical tubing. The connection method with another medical tubing is the same.

[0044] To remove it, simply press switch 33 inwards.

[0045] In addition to using cable ties for connection, screws can also be used for threaded connection: the connector ring 2 has a through hole 21, and the fixing clip 3 has a corresponding threaded hole. When connecting, the screw is passed through the through hole 21 and then threadedly connected to the threaded hole on the fixing clip 3. During the connection process, the fixing clip 3 and the connector ring 2 can be pulled together.

[0046] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A connector assembly for extracting medical tubing, comprising a connector (1) having a plug portion (11) for connecting to a medical tubing, characterized in that, The connector assembly also includes a connector ring (2) disposed on the connector (1) and a fixing clip (3) for fixing the medical tubing. A connection structure is provided between the connector ring (2) and the fixing clip (3) for bringing the connector ring (2) and the fixing clip (3) closer to each other along the length direction of the connector (1).

2. The connector assembly for medical tubing extraction according to claim 1, characterized in that, The connection structure includes a through hole (21) on the connector ring (2), a cable tie (4) passing through the through hole (21), and an insertion hole on the fixing clip (3). The cable tie (4) has a plurality of locking teeth (41) evenly distributed on one side, and a locking groove (42) is formed between two adjacent locking teeth (41). The insertion hole is provided with a locking tongue (31) that engages with the locking groove (42).

3. The connector assembly for medical tubing extraction according to claim 2, characterized in that, The fixing clip (3) is provided with a slot (32) extending along the length direction of the connecting pipe (1). A switch (33) extending along its length direction is provided in the slot (32). The switch (33) is connected to the fixing clip (3) through two symmetrically arranged connecting parts (34). The insertion hole is located inside the switch (33). The locking tongue (31) is located on the inner wall of the end of the switch (33) near the connecting pipe (1). When the end of the switch (33) away from the connecting pipe (1) is pressed inward, the end of the switch (33) near the connecting pipe (1) can be moved outward.

4. The connector assembly for medical tubing extraction according to claim 3, characterized in that, The connecting part (34) extends along the length direction of the slot (32). The end of the connecting part (34) near the pipe (1) is fixedly connected to the fixing clip (3). The end of the connecting part (34) away from the pipe (1) is fixedly connected to the switch (33). The switch (33) has a follower part (35) extending between the two connecting parts (34). The locking tongue (31) is located on the inner side of the follower part (35) near the pipe (1).

5. The connector assembly for medical tubing extraction according to claim 1, 2, 3, or 4, characterized in that, The fixing clip (3) has an opening (36) on its side for medical tubing to enter. The width of the opening (36) gradually decreases from the outside to the inside. The width of the opening (36) at its minimum is smaller than the diameter of the through hole in the fixing clip (3).

6. The connector assembly for medical tubing immersion according to claim 1, characterized in that, The connector (1) is provided with an annular groove (12), and the inner side of the connector ring (2) is provided with a plurality of protrusions (22) extending into the annular groove (12), the width of the protrusions (22) being equal to the width of the annular groove (12).

7. The connector assembly for medical tubing extraction according to claim 6, characterized in that, The inner side of the connector ring (2) is provided with several circumferential and gradually inwardly extending elastic parts (23). When squeezed, the free end of the elastic part (23) can swing outward. Each elastic part (23) has a protrusion (22) on its free end.

8. The connector assembly for medical tubing extraction according to claim 1, characterized in that, The connecting pipe (1) is a glass pipe, a stainless steel pipe or a ceramic pipe.

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