Extracorporeal circulation rubber tube connecting piece

Abstract

The utility model discloses an extracorporeal circulation rubber tube connecting piece which comprises a connecting piece body and two locking hoops, the two ends of the connecting piece body are respectively provided with a connector, the middle of the connecting piece body is a communication part, the two connectors are communicated through the communication part, and the outer portion of each connector is used for being connected with an extracorporeal circulation rubber tube in an inserted mode. The end, close to the communicating part, of the connector is a large-diameter end, the end, away from the communicating part, of the connector is a small-diameter end, the outer walls of the two ends of the communicating part are each fixedly provided with a locking connector, and external threads are arranged on the outer sides of the locking connectors. One locking hoop is correspondingly in threaded connection with one locking connector, one end of each locking hoop is provided with a locking hole for the extracorporeal circulation rubber tube to penetrate through, the inner wall of the other end of each locking hoop is circumferentially provided with an internal thread matched with the external thread, and the inner diameter of each locking hole is larger than the sum of the outer diameter of the small-diameter end and the thickness of the extracorporeal circulation rubber tube. The inner diameter of the locking hole is smaller than the sum of the thickness of the large-diameter end and the thickness of the extracorporeal circulation rubber pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of hose sealing connection, in particular to an extracorporeal circulation hose connector. Background Art

[0002] Extracorporeal circulation is a life-support technology that uses a series of special artificial devices to drain the returning cardiac venous blood outside the body through extracorporeal circulation hoses, artificially exchanges gases, regulates temperature, filters, and then returns it to the body's arterial system.

[0003] Most of the extracorporeal circulation hose connectors are installed together by rotating the male and female joints. However, during the process of rotating the male and female joints, the two adjacent hoses will rotate relative to each other. During use, the mechanical vibration generated by the external equipment drives the connection parts to generate mechanical vibrations, or when the connection parts are not tightened manually, the male and female joints will become loose, which may cause safety accidents in serious cases.

[0004] In addition, see Figure 1 Another commonly used extracorporeal circulation hose connector relies on the tightening force between the reducer b with teeth a and the hose c, and is fixed together with a cable tie d; because there are teeth on the reducer and the injection mold cannot be demolded axially and can only be opened radially, a parting line will be left. The parting line will lead to poor sealing effect during the use of the hose connector, resulting in air leakage or water seepage. Utility Model Content

[0005] The utility model aims to provide an extracorporeal circulation hose connector in view of the technical defects of inconvenient, unstable and poor sealing performance of the extracorporeal circulation hose in the prior art.

[0006] The technical solution adopted to achieve the purpose of this utility model is:

[0007] An extracorporeal circulation hose connector comprises a connector and two locking hoops, wherein two ends of the connector are respectively provided with a connector head, and the middle part of the connector is a connecting part, and the connecting part connects the two connector heads.

[0008] The outside of each connector is used to plug in an extracorporeal circulation hose, the end of the connector close to the connecting part is a large diameter end, and the end away from the connecting part is a small diameter end, and a locking joint is fixed on the outer wall of both ends of the connecting part, and the outer side of the locking joint is provided with an external thread;

[0009] One locking hoop is threadedly connected to one locking joint. One end of each locking hoop is provided with a locking hole for the extracorporeal circulation hose to pass through, and the other end is provided with an internal thread matching the external thread around the inner wall.

[0010] In the above technical solution, the inner diameter of the locking hole is larger than the sum of the outer diameter of the small diameter end and the thickness of the extracorporeal circulation hose, and the inner diameter of the locking hole is smaller than the sum of the outer diameter of the large diameter end and the thickness of the extracorporeal circulation hose.

[0011] In the above technical solution, the two connectors are respectively the first connector and the second connector; the two locking joints are respectively the first locking joint and the second locking joint; the two locking hoops are respectively the first locking hoop and the second locking hoop;

[0012] The connecting piece includes an integrally formed connecting portion, a first connecting head, a second connecting head, a first locking joint and a second locking joint. The first connecting head and the second connecting head are respectively arranged at two ends of the connecting portion and are connected to the connecting portion. The first connecting head is plugged into an extracorporeal circulation hose, and the second connecting head is plugged into another extracorporeal circulation hose. The first locking joint and the second locking joint are respectively fixed on the outer walls at both ends of the connecting portion. The first locking joint is threadedly connected to the first locking hoop, and the second locking joint is threadedly connected to the second locking hoop. The first locking hoop locks one extracorporeal circulation hose on the first connecting head, and the second locking hoop locks another extracorporeal circulation hose on the second connecting head.

[0013] In the above technical solution, the outer sides of the first locking joint and the second locking joint are respectively provided with external threads, and the inner walls of the first locking hoop and the second locking hoop are provided with internal threads.

[0014] In the above technical solution, the materials of the connecting piece and the locking hoop are both transparent plastic.

[0015] In the above technical solution, the outer wall surfaces of the two connectors are smooth conical surfaces, and the outer diameter from the small diameter end to the large diameter end is linearly transitioned.

[0016] In the above technical solution, the locking hole is a circular hole.

[0017] In the above solution, the connecting piece composed of the connecting portion, the connecting head and the locking joint is an integrally formed axisymmetric structure.

[0018] In the above technical solution, the locking hoop includes an annular wall surface and a constricted end, the internal thread is formed on the inner side of the end of the annular wall surface, and the locking hole is formed at the center position of the constricted end.

[0019] In the above technical solution, the connector is a straight-through connector, a reducing straight-through connector, a three-way connector and a three-way reducing connector.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The two connectors of the extracorporeal circulation hose connector of the utility model have no teeth, so they can be demoulded axially during production. The outer wall of the connector is smooth and has no parting line. Its sealing effect is better than that of the existing hose connector;

[0022] 2. The extracorporeal circulation hose connector of the utility model is firmly fixed, safe, and easy to operate without the aid of other fastening parts such as cable ties.

[0023] 3. The extracorporeal circulation hose connector of the utility model has a simple structure, is easy and quick to use, has a low manufacturing cost, and is easy to promote and apply commercially. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure shows a cross-sectional view of the connection structure between a reducer and an extracorporeal circulation hose in the prior art.

[0025] Figure 2 Shown is a schematic structural diagram of the extracorporeal circulation hose connector of the utility model.

[0026] Figure 3 Shown is a cross-sectional view of the straight-through extracorporeal circulation hose connector of the utility model.

[0027] Figure 4 Shown is a cross-sectional view of the straight-through variable-diameter extracorporeal circulation hose connector of the utility model.

[0028] Figure 5 Shown is a cross-sectional view of the three-way extracorporeal circulation hose connector of the present invention.

[0029] Figure 6 Shown is a cross-sectional view of a three-way variable-diameter extracorporeal circulation hose connector of the present invention.

[0030] In the figure: 1-connecting piece, 1-1-connecting part, 1-2-first connecting head, 1-3-second connecting head, 1-4-first locking joint, 1-5-second locking joint, 1-6-third locking joint, 1-7-third connecting head, 2-locking hoop, 2-1-locking hole, 2-2-first locking hoop, 2-3-second locking hoop, 2-4-third locking hoop, 3-extracorporeal circulation hose. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] Example 1

[0033] See also Figure 2 , Figure 3An extracorporeal circulation hose connector includes a connector 1 and two locking hoops 2. The two ends of the connector 1 are respectively provided with a connector head. The middle part of the connector 1 is a connecting part 1-1, and the connecting part 1-1 connects the two connector heads. The connector 1 of this embodiment is a straight-through connector.

[0034] The outside of each connector is used to plug in an extracorporeal circulation hose 3. The end of the connector close to the connecting part 1-1 is a large diameter end, and the end away from the connecting part 1-1 is a small diameter end. A locking joint is fixed on the outer walls of both ends of the connecting part 1-1, and an external thread is provided on the outer side of the locking joint.

[0035] One locking hoop 2 is threadedly connected to one locking connector, and one end of each locking hoop 2 is provided with a locking hole 2-1 for the extracorporeal circulation hose 3 to pass through, and the inner wall of the other end is circumferentially provided with an internal thread matching the external thread. The inner diameter of the locking hole 2-1 is larger than the sum of the outer diameter of the small diameter end and the thickness of the extracorporeal circulation hose 3, and the inner diameter of the locking hole 2-1 is smaller than the sum of the thickness of the large diameter end and the thickness of the extracorporeal circulation hose 3. Therefore, the locking hoop 2 is rotated toward the connecting part 1-1, and the locking hole 2-1 presses the extracorporeal circulation hose 3 onto the connector. The extracorporeal circulation hose 3 can be loosened by rotating the locking hoop 2 in the opposite direction.

[0036] Specifically, the two connectors are the first connector 1-2 and the second connector 1-3, the two locking joints are the first locking joint 1-4 and the second locking joint 1-5, and the two locking hoops 2 are the first locking hoop 2-2 and the second locking hoop 2-3.

[0037] The connecting piece 1 includes an integrally formed connecting portion 1-1, a first connecting head 1-2, a second connecting head 1-3, a first locking joint 1-4 and a second locking joint 1-5. The first connecting head 1-2 and the second connecting head 1-3 are respectively arranged at the two ends of the connecting portion 1-1 and are connected to the connecting portion 1-1. The first connecting head 1-2 is plugged with an extracorporeal circulation hose 3, and the second connecting head 1-3 is plugged with another extracorporeal circulation hose 3; the first locking joint 1-4 and the second locking joint 1-5 are respectively fixed on the outer walls at both ends of the connecting portion 1-1, the first locking joint 1-4 is threadedly connected to the first locking hoop 2-2, and the second locking joint 1-5 is threadedly connected to the second locking hoop 2-3. The first locking hoop 2-2 locks one extracorporeal circulation hose 3 on the first connecting head 1-2, and the second locking hoop 2-3 locks another extracorporeal circulation hose 3 on the second connecting head 1-3. Among them, the outer sides of the first locking joint 1-4 and the second locking joint 1-5 are respectively provided with external threads, and the inner walls of the first locking hoop 2-2 and the second locking hoop 2-3 are provided with internal threads, which are used to thread the first locking joint 1-4 and the first locking hoop 2-2, and the second locking joint 1-5 and the second locking hoop 2-3, respectively, to lock the extracorporeal circulation hose 3 on the first connector 1-2 and the second connector 1-3, respectively.

[0038] Example 2

[0039] Based on Example 1, see Figure 4 In order to connect the extracorporeal circulation hoses 3 with different diameters, the connector 1 is a variable diameter straight-through connector.

[0040] Preferably, the inner wall diameter of one end of the first locking hoop 2-2 matches the outer wall diameter of the first locking joint 1-4, so as to facilitate the threaded connection between the first locking joint 1-4 and the first locking hoop 2-2; the inner wall diameter of one end of the second locking joint 1-5 matches the outer wall diameter of the second locking hoop 2-3, so as to facilitate the threaded connection between the second locking joint 1-5 and the second locking hoop 2-3, and the extracorporeal circulation hoses 3 of different diameters inserted on the connectors at both ends of the connecting part 1-1 are locked through the locking holes 2-1 of the first locking hoop 2-2 and the second locking hoop 2-3.

[0041] Preferably, the inner diameter of the locking hole 2-1 of the second locking hoop 2-3 is larger than the inner diameter of the locking hole 2-1 of the first locking hoop 2-2.

[0042] Example 3

[0043] Based on Example 1-2, see Figure 5In order to connect the extracorporeal circulation hose 3 in different directions, the connector 1 is a three-way connector, the middle part of the three-way connector is a connecting part 1-1, the connecting part 1-1 connects the three connectors, each connector is connected with an extracorporeal circulation hose 3, and a locking joint is fixed on the outer wall of the three ends of the connecting part 1-1, and an external thread is provided on the outer side of the locking joint, and each locking joint is threadedly connected with a locking hoop 2.

[0044] Specifically, the three connectors are respectively the first connector 1-2, the second connector 1-3 and the third connector 1-7; the three locking joints are respectively the first locking joint 1-4, the second locking joint 1-5 and the third locking joint 1-6; the three locking hoops 2 are respectively the first locking hoop 2-2, the second locking hoop 2-3 and the third locking hoop 2-4.

[0045] Preferably, the three-way connector includes an integrally formed connecting portion 1-1, a first connector 1-2, a second connector 1-3, a third connector 1-7, a first locking joint 1-4, a second locking joint 1-5 and a third locking joint 1-6, wherein the first connector 1-2, the second connector 1-3 and the third connector 1-7 are respectively arranged at each end of the connecting portion 1-1 and are connected to the connecting portion 1-1, the first connector 1-2 is plugged into an extracorporeal circulation hose 3, the second connector 1-3 is plugged into another extracorporeal circulation hose 3, and the third connector 1-7 is plugged into another extracorporeal circulation hose 3; the connecting portion 1 -1, the first locking joint 1-4, the second locking joint 1-5 and the third locking joint 1-6 are respectively fixed on the outer walls of each end, the first locking joint 1-4 is threadedly connected to the first locking hoop 2-2, the second locking joint 1-5 is threadedly connected to the second locking hoop 2-3, the third locking joint 1-6 is threadedly connected to the third locking hoop 2-4, the first locking hoop 2-2 locks an extracorporeal circulation hose 3 on the first connector 1-2, the second locking hoop 2-3 locks another extracorporeal circulation hose 3 on the second connector 1-3, and the third locking hoop 2-4 locks another extracorporeal circulation hose 3 on the second connector 1-3.

[0046] Example 4

[0047] Based on Examples 1-3, see Figure 6 In order to connect the extracorporeal circulation hoses 3 with different directions and diameters, the connector 1 is a three-way reducer connector.

[0048] Preferably, the inner wall diameter of one end of the first locking hoop 2-2 matches the outer wall diameter of the first locking joint 1-4, so as to facilitate the threaded connection between the first locking joint 1-4 and the first locking hoop 2-2; the inner wall diameter of one end of the second locking joint 1-5 matches the outer wall diameter of the second locking hoop 2-3, so as to facilitate the threaded connection between the second locking joint 1-5 and the second locking hoop 2-3; the inner wall diameter of one end of the third locking joint 1-6 matches the outer wall diameter of the third locking hoop 2-4, so as to facilitate the threaded connection between the third locking joint 1-6 and the third locking hoop 2-4, and the extracorporeal circulation hose 3 of different diameters inserted on the connectors at the three ends of the connecting part 1-1 is locked through the locking holes 2-1 of the first locking hoop 2-2, the second locking hoop 2-3 and the third locking hoop 2-4.

[0049] Preferably, the inner diameter of the locking hole 2-1 of the third locking hoop 2-4 is larger than the inner diameter of the locking hole 2-1 of the second locking hoop 2-3; the inner diameter of the locking hole 2-1 of the second locking hoop 2-3 is larger than the inner diameter of the locking hole 2-1 of the first locking hoop 2-2.

[0050] Example 5

[0051] This embodiment is further limited on the basis of Embodiments 1-4.

[0052] Preferably, the connecting piece 1 and the locking hoop 2 are both made of transparent plastic, which facilitates observation of the flow state of the circulating medium.

[0053] Preferably, the outer wall surfaces of the two connectors are smooth conical surfaces, and the outer diameter from the small diameter end to the large diameter end is linearly transitioned. The smooth conical surface structure can avoid the introduction of the parting line, so that the sealing performance of the connector 1 is stronger.

[0054] Preferably, the locking hole 2-1 is a circular hole, which can increase the contact area between the locking hole 2-1 and the extracorporeal circulation hose 3 and improve the locking stability.

[0055] Preferably, the connecting member 1 composed of the connecting portion 1 - 1 , the connecting head and the locking joint is an integrally formed axisymmetric structure with low processing cost.

[0056] Preferably, the locking hoop 2 includes an annular wall and a constricted end, the internal thread is formed on the inner side of the end of the annular wall, and the locking hole 2-1 is formed at the center of the constricted end. The annular locking hoop 2 is easy to rotate.

[0057] Example 6

[0058] Based on Example 1, a method for using an extracorporeal circulation hose connector includes the following steps:

[0059] Step 1: First, two extracorporeal circulation hoses 3 are passed through the locking holes 2-1 at the ends of the first locking hoop 2-2 and the second locking hoop 2-3, respectively, and are plugged into the first connector 1-2 and the second connector 1-3, respectively;

[0060] Step 2, spirally connect the first locking hoop 2-2 and the first locking joint 1-4 and the second locking hoop 2-3 and the second locking joint 1-5 respectively, so that the locking holes 2-1 at the ends of the first locking hoop 2-2 and the second locking hoop 2-3 can lock the extracorporeal circulation hose 3 inserted on the first connector 1-2 and the second connector 1-3, so that the extracorporeal circulation hose 3 is sealed and connected to the connector 1.

[0061] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0062] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An extracorporeal circulation hose connector, characterized in that: It includes a connecting piece and two locking hoops. The two ends of the connecting piece are respectively provided with a connecting head. The middle part of the connecting piece is a connecting part, and the connecting part connects the two connecting heads. The outside of each connector is used to plug in an extracorporeal circulation hose, the end of the connector close to the connecting part is a large diameter end, and the end away from the connecting part is a small diameter end, and a locking joint is fixed on the outer wall of both ends of the connecting part, and the outer side of the locking joint is provided with an external thread; One locking hoop is threadedly connected to one locking joint. One end of each locking hoop is provided with a locking hole for the extracorporeal circulation hose to pass through, and the other end is provided with an internal thread matching the external thread around the inner wall.

2. The extracorporeal circulation hose connector according to claim 1, characterized in that: The inner diameter of the locking hole is larger than the sum of the outer diameter of the small diameter end and the thickness of the extracorporeal circulation hose, and the inner diameter of the locking hole is smaller than the sum of the outer diameter of the large diameter end and the thickness of the extracorporeal circulation hose.

3. The extracorporeal circulation hose connector according to claim 1, characterized in that: The two connectors are respectively a first connector and a second connector; the two locking connectors are respectively a first locking connector and a second locking connector; the two locking hoops are respectively a first locking hoop and a second locking hoop; The connecting piece includes an integrally formed connecting portion, a first connecting head, a second connecting head, a first locking joint and a second locking joint. The first connecting head and the second connecting head are respectively arranged at two ends of the connecting portion and are connected to the connecting portion. The first connecting head is plugged into an extracorporeal circulation hose, and the second connecting head is plugged into another extracorporeal circulation hose. The first locking joint and the second locking joint are respectively fixed on the outer walls at both ends of the connecting portion. The first locking joint is threadedly connected to the first locking hoop, and the second locking joint is threadedly connected to the second locking hoop. The first locking hoop locks one extracorporeal circulation hose on the first connecting head, and the second locking hoop locks another extracorporeal circulation hose on the second connecting head.

4. The extracorporeal circulation hose connector according to claim 3, characterized in that: The first locking joint and the second locking joint are respectively provided with external threads on their outer sides, and the first locking hoop and the second locking hoop are provided with internal threads on their inner walls.

5. The extracorporeal circulation hose connector according to claim 1, characterized in that: The connecting piece and the locking hoop are both made of transparent plastic.

6. The extracorporeal circulation hose connector according to claim 1, characterized in that: The outer wall surfaces of the two connectors are smooth conical surfaces, and the outer diameters from the small diameter end to the large diameter end are linearly transitioned.

7. The extracorporeal circulation hose connector according to claim 1, characterized in that: The locking hole is a circular hole.

8. The extracorporeal circulation hose connector according to claim 1, characterized in that: The connecting piece composed of the connecting part, the connecting head and the locking joint is an integrally formed axisymmetric structure.

9. The extracorporeal circulation hose connector according to claim 1, characterized in that: The locking hoop comprises an annular wall surface and a constricted end, the internal thread is formed on the inner side of the end of the annular wall surface, and the locking hole is formed at the center position of the constricted end.

10. The extracorporeal circulation hose connector according to claim 1, characterized in that: The connectors are straight-through connectors, reducing straight-through connectors, three-way connectors and three-way reducing connectors.

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