CN216022672U

CN216022672U - Medical catheter connector and connecting assembly with quick plugging function

Info

Publication number: CN216022672U
Application number: CN202122294158.2U
Authority: CN
Inventors: 叶茂林; 曾圣
Original assignee: Shenzhen Med Link Electronics Tech Co ltd
Current assignee: Shenzhen Med Link Electronics Tech Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-03-15
Anticipated expiration: 2031-09-22

Abstract

The application relates to a medical catheter connector and a connecting assembly with a quick plugging function, which comprise a bolt cap, a connecting body and an elastic tube, wherein a clamping space is arranged between the bolt cap and the connecting body; the elastic tube is arranged in the clamping space, and a tube hole for accommodating the elastic medical catheter is formed in the elastic tube; the bolt cap is provided with internal threads, and the connecting body is provided with a threaded connecting part, an inclined plane part and a pipeline connecting part; the inclined plane part is arranged between the threaded connecting part and the pipeline connecting part, and the outer diameter of the threaded connecting part is larger than that of the pipeline connecting part; the threaded connecting part is provided with an external thread matched with the internal thread of the bolt cap, and the connecting main body and the bolt cap are connected with each other through the thread; this application can realize the effect of the fast assembly of medical catheter at the medical catheter connector that the catheter can pass through after cutting.

Description

Medical catheter connector and connecting assembly with quick plugging function

Technical Field

The application relates to the technical field of medical equipment, in particular to a medical catheter connector and a connecting assembly with a quick plugging function.

Background

At present, medical personnel often use the pipe to carry out the operation treatment to the patient, but at the actual clinical operation in-process, the doctor is difficult to judge whether the pipe length specification of interveneeing the human body matches with the actual required pipe length of patient, and under this kind of circumstances, medical personnel can cut short pipe length, utilizes medical extension pipe, and the interim simple and easy pipe joint intubate of manual preparation by oneself to this kind of problem that meets in solving clinically.

Thus, although the problem of catheter intervention is solved, the catheter manufacturing process is troublesome, and certain risks are brought to the operation.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that in the existing medical operation, the temporarily manufactured simple inserting pipe is inconvenient to assemble and low in efficiency, the application provides a medical catheter connector and a connecting assembly with a quick inserting function.

In a first aspect, the present application provides a medical catheter connector with a quick connection function, which adopts the following technical scheme:

a medical catheter connector with a quick plugging function comprises a bolt cap, a connecting main body and an elastic tube, wherein an accommodating cavity is formed in the bolt cap, the connecting main body is inserted into the accommodating cavity, and the connecting main body comprises a threaded connecting part, an inclined plane part and a pipeline connecting part; the inclined plane part is connected between the threaded connecting part and the pipeline connecting part, and the outer diameter of the threaded connecting part is larger than that of the pipeline connecting part; the threaded connecting part is provided with an external thread; the bolt cap is provided with an internal thread matched with the external thread of the threaded connecting part; the connecting body is in threaded connection with the bolt cap; the bolt cap, the threaded connecting part and the inclined plane part form a clamping space, and the elastic pipe is arranged in the clamping space; the elastic tube is abutted against the inclined plane part; the middle part of the elastic tube is provided with a tube hole which is used for accommodating an elastic medical catheter.

By adopting the technical scheme, after the medical catheter is inserted into the hole of the elastic tube, the connecting body is rotated to connect the connecting body and the bolt cap in a threaded manner, the elastic tube is extruded by the inclined plane part to deform towards the direction away from the bolt cap, and the axial force is converted into the radial force, so that the aim of tightly pressing the medical catheter assembled in place to achieve the tight fit of the catheter is fulfilled, and the problems of inconvenient assembly and low efficiency of the temporary manufactured simple connecting insertion tube in the existing medical operation are solved.

Optionally, the accommodating chamber includes a thread groove and an accommodating groove; the diameter of the accommodating groove is larger than that of the thread groove; the thread groove is arranged at the position far away from the opening of the bolt cap; the threaded connection part is provided with a baffle ring, the baffle ring slides in the accommodating groove, and the bottom wall of the accommodating groove forms a barrier wall for limiting the baffle ring to slide towards the threaded groove.

Through adopting above-mentioned technical scheme, set up in the storage tank and keep off the ring, through keeping off the ring position, can know the threaded connection condition, simultaneously, when keeping off the ring and removing the storage tank and be close to thread groove side end, just can't go forward again, guarantee not drop easily between connecting main part and the bolt cap.

Optionally, the bolt cap includes an outer ring, a connecting portion and a clamping portion, and the clamping portion is connected with the outer ring through the connecting portion; an annular groove is formed in the inner side of the connecting part, a limiting ring is arranged in the annular groove, and the limiting ring has elasticity; the limiting ring is clamped in the connecting part; one side of the limiting ring is provided with a notch; one side end face of the limiting ring can be abutted to the baffle ring, and the other side end face of the limiting ring is abutted to the clamping portion.

Through adopting above-mentioned technical scheme, set up the spacing ring, further block and keep off the ring, prevent that the insecure connecting body and the separation of bolt cap that leads to of screwed connection. Moreover, set up joint portion at the bolt cap opening part, prevent that the spacing ring from deviating from joint portion.

Optionally, the elastic tube includes a clamping portion, and a side of the clamping portion facing the connecting body is provided with a guide surface matched with the inclined surface portion.

Through adopting above-mentioned technical scheme, adopt the spigot surface, provide the better holding power of inclined plane portion, reduce the resistance of threaded connection between connecting body and the bolt cap.

Optionally, an extrusion space is arranged on one side, close to the clamping portion, of the pipeline connecting portion, and the outer diameter of the extrusion space is equal to the outer diameter of one end, far away from the bolt cap opening, of the clamping portion.

Through adopting above-mentioned technical scheme, set up the extrusion space, at the connecting body to the plug cap in-process that gos forward, the elastic tube can be extruded towards the extrusion space direction, and then has promoted the clamping force of elastic tube and medical catheter.

Optionally, the bolt cap includes an outer ring, an inner ring is disposed in the outer ring, and the inner ring is fixedly connected with the outer ring; the elastic tube further comprises a parallel part, the parallel part is connected to the clamping part, and the parallel part is inserted into the inner ring.

Through adopting above-mentioned technical scheme, peg graft the parallel portion in the inner ring, make parallel portion and inner ring laminating, make to be connected more closely between elastic tube and the bolt cap.

Optionally, the elastic tube further comprises a reinforcing part, and the reinforcing part is connected to one end of the parallel part far away from the clamping part; the outer diameter of the reinforcing part is gradually reduced in the direction away from the parallel part.

Through adopting above-mentioned technical scheme, the parallel portion direction external diameter of keeping away from of reinforcement portion reduces gradually for reinforcement portion closely laminates the tube hole, makes more stable the sliding of pipe in the tube hole.

Optionally, a pushing lug is arranged in the middle of the outer side of the pipeline connecting part.

Through adopting above-mentioned technical scheme, set up the promotion auricle in equipment junction outside middle part, can promote auricle swivelling joint main part through the pulling for it is more convenient with bolt cap threaded connection to connect the main part.

Optionally, the pipeline connecting portion are provided with the pipe and link up the screens, the pipe links up the screens and is located medical catheter's removal route, can be through the range of motion of joint medical catheter in order to restrict medical catheter.

By adopting the technical scheme, the catheter linking and clamping position is arranged, so that the medical catheter can not move continuously after entering the elastic tube and always moves to the catheter linking and clamping position.

In a second aspect, the present application provides a medical catheter connection assembly, which adopts the following technical solution:

a medical catheter connection assembly comprising a medical catheter connector as described in the first aspect, further comprising a guide pin plug-fitted to the flexible tube for guiding a medical catheter into the flexible tube.

By adopting the technical scheme, the guide pin is arranged in the medical catheter connecting assembly, the diameter of the guide pin is the same as the inner diameter of the target medical catheter, and the guide pin is matched with the medical catheter connector, so that the medical catheter can be conveniently introduced into the elastic tube.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the medical catheter connector with the plugging function is designed, a threaded connection mode is adopted, the connection of the connecting main body and the bolt cap can be realized by rotating and pushing the lug plate, and the catheter is clamped by the elastic tube and can be quickly connected with other equipment, so that the medical catheter can be quickly plugged; on the contrary, the elastic tube can be restored to a loose state only by reversely rotating and pushing the lug, and the catheter can be taken out when the extrusion tight fit state of the medical catheter is lost, so that the problems of inconvenient assembly and low efficiency in the related technology are solved;

2. the limiting ring is arranged at the joint, so that the phenomenon that the bolt cap and the connecting main body fall off due to over rotation in the process of restoring the elastic pipe to the relaxed state can be prevented; the clamping part is arranged at the opening of the bolt cap, so that the limiting ring can be prevented from being separated from the clamping part.

3. Set up the spigot surface that parallels with the inclined plane structure on the clamping part of elasticity pipe, strengthened the extrusion of inclined plane to elasticity pipe, be close to clamping part one side at pipeline connecting portion and set up the extrusion space for the elasticity pipe is advanced towards the extrusion space direction after being extrudeed, can combine together connecting body and bolt cap fast.

4. The medical catheter connecting assembly comprises a medical catheter connector and a guide pin, the medical catheter is sleeved in the guide pin by the guide pin, the medical catheter is conveniently and quickly introduced into the elastic tube and moves to a catheter connection clamping position towards the direction of the pipeline connecting part, and the medical catheter moving range is limited by the catheter connection clamping position.

Drawings

Fig. 1 is a schematic structural view of a medical catheter connector having a quick connector function.

Fig. 2 is an exploded view of a medical catheter connector with a quick connect function.

Fig. 3 is a sectional view of a medical catheter connector with a quick connect function before the medical catheter is connected to the connector.

Fig. 4 is a sectional view of a medical catheter connector with a quick connect function after insertion of a medical catheter.

Fig. 5 is a partially enlarged view of a portion a of fig. 4.

Fig. 6 is a partially enlarged view at B of fig. 4.

Figure 7 is a schematic view of a medical catheter coupling assembly.

Description of reference numerals: 1. a bolt cap; 2. a connecting body; 3. an elastic tube; 5. a limiting ring; 8. a guide pin; 10. a medical catheter; 11. an outer ring; 13. an accommodating chamber; 14. a connecting portion; 15. a clamping part; 21. a threaded connection; 22. an inclined plane part; 23. a pipe connection; 24. an extrusion space; 31. a reinforcing part; 32. a parallel portion; 33. a clamping portion; 34. a tube hole; 112. an inner ring; 131. a thread groove; 132. a containing groove; 211. a baffle ring; 231. pushing the lug; 232 the catheter is engaged and locked.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a medical catheter connector with a quick plugging function. Referring to fig. 1, the medical catheter connector with a quick connection function comprises a cap 1, a connecting body 2 and an elastic tube 3, wherein the connecting body 2 is connected with the cap 1, a clamping space is formed between the cap 1 and the connecting body 2, the elastic tube 3 is arranged in the clamping space, and a tube hole 34 for accommodating the medical catheter 10 is arranged in the middle of the elastic tube 3. The bolt cap 1 is provided with an internal thread, the connecting body 2 is provided with an external thread, the bolt cap 1 and the connecting body 2 are in threaded connection and matching, and the elastic tube 3 can be extruded to achieve the purpose of fixing the medical catheter 10 through the threaded matching of the bolt cap 1 and the connecting body 2.

Referring to fig. 2, the inner wall of the cap 1 is provided with an internal thread, the connection body 2 includes a threaded connection portion 21, an inclined surface portion 22 and a pipe connection portion 23, the inclined surface portion 22 is connected between the threaded connection portion 21 and the pipe connection portion 23, and the outer diameter of the threaded connection portion 21 is greater than the outer diameter of the pipe connection portion 23.

Referring to fig. 2, the outer wall of the threaded connection portion 21 is provided with an external thread for matching with the internal thread of the cap 1 and a stopper ring 211 for limiting the extent of mutual connection between the external thread of the threaded connection portion 21 and the internal thread of the cap 1; the slope part 22 is used for extruding the elastic tube 3; the pipeline connecting part 23 is used for being connected with other equipment, and the outer wall of the pipeline connecting part 23 is provided with a pushing lug 231, and the pushing lug 231 is used for forming a handle and is convenient for rotating the connecting body 2.

Referring to fig. 2 and 3, the outer wall of the pipeline connecting part 23 is further provided with an external thread which is used for matching and connecting with an internal thread of other equipment; the inner pipe of the pipeline connecting part 23 comprises a small-bore pipe and a large-bore pipe, wherein the small-bore pipe is arranged at one side close to the bolt cap 1, and the outer diameter of the large-bore pipe is larger than the diameter of the medical catheter 10.

Referring to fig. 4 and 5, a catheter engagement position 232 is provided in the tube connecting portion 23, and the catheter engagement position 232 is located on the moving path of the medical catheter 10, and the moving range of the medical catheter 10 can be limited by a clamping manner, that is, when the medical catheter 10 moves to a position abutting against the catheter engagement position 232 toward the direction of entering the tube connecting portion 23, the catheter engagement position 232 and the medical catheter 10 form a clamping fit, and the medical catheter 10 moves to the maximum range at this time. In this embodiment, a conduit engagement detent 232 is formed at the interface between the large-bore tube and the small-bore tube of the conduit connection portion 23. Specifically, pipe links up screens 232 and is cyclic annular, and the internal diameter that pipe links up screens 232 is less than medical catheter 10's external diameter and more than or equal to medical catheter 10's internal diameter to when reaching spacing effect, reduce sheltering from to the fluidic in medical catheter 10. In this embodiment, the inner diameter of the catheter engagement detent 232 is preferably equal to the inner diameter of the medical catheter 10.

Referring to fig. 2 and 3, the cap 1 is provided therein with an accommodating chamber 13, the accommodating chamber 13 is used for accommodating the threaded connection portion 21, the accommodating chamber 13 includes a threaded groove 131 and an accommodating groove 132, and the threaded groove 131 is provided with an internal thread for realizing the threaded connection of the cap 1 and the threaded connection portion 21. The receiving groove 132 is used for placing the retaining ring 211, and the retaining ring 211 slides in the receiving groove 132 correspondingly along with the threaded connection.

Referring to fig. 2 and 3, the bolt cap 1 comprises an outer ring 11, a connecting part 14 and a clamping part 15, wherein the outer ring 11 is used for forming an outer wall structure of the bolt cap 1, an inner ring 112 is arranged in the outer ring 11, and the inner ring 112 is fixedly connected with the outer ring 11. The inner side of the connecting part 14 is provided with an annular groove, an elastic limiting ring 5 is arranged in the annular groove, the limiting ring 5 can be detachably clamped in the annular groove, and a notch is formed in one side of the limiting ring 5. The connecting portion 14 is used for placing and stabilizing the stop collar 5 on the one hand and for connecting the outer ring 11 and the snap-in portion 15 on the other hand. The clamping portion 15 is provided with a plurality of and circumference is arranged at the opening of the bolt cap 1, and the clamping portion 15 is used for clamping the limiting ring 5 and preventing the limiting ring 5 from being separated.

Referring to fig. 2 and 3, the elastic tube 3 includes a reinforcing portion 31, a parallel portion 32 and a clamping portion 33, the parallel portion 32 is disposed between the reinforcing portion 31 and the clamping portion 33, the reinforcing portion 31 and the clamping portion 33 are respectively fixedly connected to the parallel portion 32, an outer diameter of one end of the parallel portion 32 away from the clamping portion 33 is equal to an outer diameter of an end portion of a connection portion of the reinforcing portion 31, an outer diameter of an end portion of the clamping portion 33 close to the parallel portion 32 is equal to an outer diameter of an end portion of the parallel portion 32, the clamping portion 33 is of a boss structure, and a guide surface matched with the inclined surface portion 22 is disposed on a side of the clamping portion 33 facing the connecting body 2.

Referring to fig. 4 and 6, the guide surface of the clamping portion 33 is adapted to cooperate with the inner side of the inclined surface portion 22 to increase the supporting force to press the elastic tube 3. Further, the connecting body 2 is provided with a squeezing space 24, the squeezing space 24 is used for placing the elastic tube 3 which moves after being squeezed, and one end of the squeezing space 24 is equal to the outer diameter of the clamping part 33 far away from the opening of the bolt cap 1.

Referring to fig. 2 and 3, the reinforcement portion 31 is used for the medical catheter 10 to be stably sleeved in the tube hole 34, and in order to facilitate and fast inserting the medical catheter 10 into the tube hole 34, the reinforcement portion 31 is provided with a chamfer at an end away from the parallel portion 32.

The application relates to a medical catheter connector with a quick plugging function, which is implemented according to the following principle: in introducing the medical catheter 10 into the connector, through adopting threaded connection's mode, can adjust the connection progress of bolt cap 1 and connecting body 2 in real time, connecting body 2 is last to have inclined plane portion 22, and in the in-process of rotatory promotion auricle 231, bolt cap 1 and connecting body 2 screw thread are mutually supported, and elastic tube 3 is being extruded to inclined plane portion 22 inside wall, promotes elastic tube 3 and moves toward extrusion space 24 direction. The tube connecting portion 23 is provided with a catheter engagement detent 232, and when the medical catheter 10 moves to a position abutting against the catheter engagement detent 232 in the direction of entering the tube connecting portion 23, the catheter engagement detent 232 and the medical catheter 10 form a snap fit, and the medical catheter 10 moves to the maximum range at the moment. Meanwhile, the limiting ring 5 is arranged on the connecting part 14, so that the connection between the bolt cap 1 and the connecting main body 2 is tighter, and the phenomenon that the bolt cap 1 and the connecting main body 2 fall off due to over rotation in the process of recovering the loose state of the elastic tube 3 is prevented.

The embodiment of the application discloses a medical catheter connecting assembly.

Referring to fig. 7, the medical catheter connection assembly comprises a medical catheter connector and a guide pin 8, said guide pin 8 being a plug fit to the flexible tube 3, and the guide pin 8 being for guiding a medical catheter 10 into the flexible tube 3.

The guide pin 8 has the same diameter as the target medical catheter 10 internal diameter for rapid introduction of the medical catheter 10 into the medical catheter connector for subsequent tight fitting assembly. When assembling the medical catheter 10 to the medical catheter connector, the guide pin 8 passes through the side of the connecting body 2 away from the cap 1 along the tube hole 34 until the guide pin passes out of the reinforced part 31, the guide pin 8 passes out of the tube hole 34 by a distance of preferably 2-3 cm, the medical catheter 10 is sleeved in the guide pin 8, the guide pin 8 is pulled in a direction away from the opening of the cap 1, the medical catheter 10 is rapidly inserted into the tube hole 34, and meanwhile, the risk of deformation and collapse of the tube wall of the medical catheter 10 is ensured.

The application principle of the medical catheter connecting assembly is as follows: the guide pin 8 is introduced, the medical catheter 10 is introduced into the elastic tube 3 by using the guide pin 8, the elastic tube 3 compresses the medical catheter 10, when the guide tube 8 guides the medical catheter 10 to the catheter engagement clamping position 232, the medical catheter 10 is limited in moving range, at the moment, the guide tube 8 is drawn out, and the medical catheter 10 can be rapidly inserted into other equipment.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A medical catheter connector with a quick plugging function is characterized in that: the plug comprises a plug cap (1), a connecting main body (2) and an elastic tube (3), wherein an accommodating chamber (13) is arranged in the plug cap (1), the connecting main body (2) is inserted into the accommodating chamber (13), and the connecting main body (2) comprises a threaded connecting part (21), an inclined plane part (22) and a pipeline connecting part (23); the inclined surface part (22) is connected between the threaded connecting part (21) and the pipeline connecting part (23), and the outer diameter of the threaded connecting part (21) is larger than that of the pipeline connecting part (23);

the threaded connecting part (21) is provided with an external thread; the bolt cap (1) is provided with an internal thread matched with the external thread of the threaded connecting part (21); the connecting body (2) is in threaded connection with the bolt cap (1); a clamping space is formed among the bolt cap (1), the threaded connecting part (21) and the inclined plane part (22), and the elastic pipe (3) is arranged in the clamping space; the elastic pipe (3) is abutted against the inner side wall of the inclined plane part (22); the middle part of the elastic tube (3) is provided with a tube hole (34), and the tube hole (34) is used for accommodating the elastic medical catheter (10).

2. The medical catheter connector with the quick-connect function according to claim 1, wherein: the accommodating chamber (13) comprises a threaded groove (131) and an accommodating groove (132); the diameter of the accommodating groove (132) is larger than that of the thread groove (131); the thread groove (131) is arranged at the opening far away from the bolt cap (1); the thread connecting part (21) is provided with a baffle ring (211), the baffle ring (211) slides in the accommodating groove (132), and the bottom wall of the accommodating groove (132) forms a baffle wall for limiting the baffle ring (211) to slide to the thread groove (131).

3. The medical catheter connector with the quick connect function according to claim 2, wherein: the bolt cap (1) comprises an outer ring (11), a connecting part (14) and a clamping part (15), wherein the clamping part (15) is connected with the outer ring (11) through the connecting part (14); an annular groove is formed in the inner side of the connecting part (14), a limiting ring (5) is arranged in the annular groove, and the limiting ring (5) has elasticity; the limiting ring (5) is clamped in the connecting part (14); one side of the limiting ring (5) is provided with a notch; the end face of one side of the limiting ring (5) can be abutted against the baffle ring (211), and the end face of the other side of the limiting ring is abutted against the clamping part (15).

4. The medical catheter connector with the quick-connect function according to claim 1, wherein: the elastic tube (3) comprises a clamping part (33), and one side, facing the connecting body (2), of the clamping part (33) is provided with a guide surface matched with the inner side wall of the inclined surface part (22).

5. The medical catheter connector with the quick-connect function according to claim 4, wherein: the pipeline connecting part (23) is provided with an extrusion space (24) on one side close to the clamping part (33), and the diameter of the extrusion space (24) is equal to the outer diameter of one end of the clamping part (33) far away from the opening of the bolt cap (1).

6. The medical catheter connector with the quick-connect function according to claim 4, wherein: the bolt cap (1) comprises an outer ring (11), an inner ring (112) is arranged in the outer ring (11), and the inner ring (112) is fixedly connected with the outer ring (11); the elastic tube (3) further comprises a parallel portion (32), the parallel portion (32) is connected to the clamping portion (33), and the parallel portion (32) is inserted into the inner ring (112).

7. The medical catheter connector with the quick-connect function according to claim 6, wherein: the elastic tube (3) further comprises a reinforcing part (31), and the reinforcing part (31) is connected to one end, far away from the clamping part (33), of the parallel part (32); the outer diameter of the reinforcing part (31) is gradually reduced away from the parallel part (32).

8. The medical catheter connector with the quick-connect function according to claim 1, wherein: and a pushing lug (231) is arranged in the middle of the outer side of the pipeline connecting part (23).

9. The medical catheter connector with the quick-connect function according to claim 1, wherein: pipeline connecting portion (23) are provided with pipe linking screens (232), pipe linking screens (232) are located the removal route of medical catheter (10), can be through the range of motion of joint medical catheter (10) in order to restrict medical catheter (10).

10. A medical catheter connection assembly characterized by: comprising a medical catheter connector according to any of claims 1 to 9, further comprising a guide pin (8), the guide pin (8) being plug-fitted to the flexible tube (3), the guide pin (8) being used for guiding a medical catheter (10) into the flexible tube (3).