CN216455224U

CN216455224U - Anesthesia catheter assembly

Info

Publication number: CN216455224U
Application number: CN202122858991.5U
Authority: CN
Inventors: 兰天星; 杨桂芳; 卢言京; 郭心馨; 李朝东
Original assignee: Linyi Xinghua Medical Equipment Co ltd
Current assignee: Linyi Xinghua Medical Equipment Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-05-10
Anticipated expiration: 2031-11-19

Abstract

The application discloses an anesthesia catheter assembly which comprises a catheter and a catheter connector, wherein the interiors of the catheter and the catheter connector are hollow and communicated; the conduit joint comprises a first joint and a second joint, one end of the first joint is provided with a butt joint part for butt joint with the conduit, and the other end of the first joint is in threaded connection with the second joint; the conduit is provided with a head end and a tail end which are opposite, the tail end of the conduit is in an inward-contraction necking shape, and the conduit is inserted into the butt joint part through the tail end to be in butt joint communication with the conduit joint and extends to a position in threaded connection with the second joint. According to the anesthesia catheter assembly provided by the application, when the catheter connector is locked, a larger contraction position is provided, and the catheter is prevented from being extruded and deformed due to overlarge local pressure; when the anesthetic catheter is combined with the catheter connector, the end part of the tail end of the catheter is not easy to touch the inner wall of the catheter connector, and the rest part of the catheter can be guided into the connector inner cavity by the inclination of the tail end of the catheter along the inner wall of the catheter connector even if the end part of the catheter touches the inner wall of the catheter connector, so that the success rate and the efficiency of the combination of the anesthetic catheter and the catheter connector are improved.

Description

Anesthesia catheter assembly

Technical Field

The application relates to the technical field of medical anesthesia apparatuses, in particular to an anesthesia catheter assembly.

Background

The epidural nerve block is an anesthesia method widely applied in clinic at present, and has the advantages of simple operation, low cost, easy management in operation, convenient epidural analgesia after operation and the like. The main component used in this method of anaesthesia is the anaesthetic catheter, which is very thin, typically not exceeding 1mm in outer diameter, due to the need to be placed in a narrow epidural space, and which is difficult to fit into a connector due to the need to combine the anaesthetic catheter with the administration set via a catheter connector.

Although the existing product carries out taper processing on the insertion position of the conduit joint so as to lead the conduit to penetrate into an inner hole in the center of the joint, when the tapered conduit joint is used, the friction force on the periphery of the conduit is still large, and the conduit is easy to push against an elastic piece in the conduit joint to cause the conduit to be bent, so that the conduit is difficult to continuously penetrate into a specified position, and the operation is repeated after the bent part at the tail end is usually removed.

Moreover, after the tail end of the anesthetic catheter is inserted into the inner cavity of the elastic part of the joint, the tail end of the anesthetic catheter needs to be locked through the catheter joint so that the elastic part can be contracted to realize combination, and the tail end of the traditional anesthetic catheter is of a cylinder structure with the flat-cut catheter; on the other hand, the tail end of the straight tube-shaped catheter is difficult to directly penetrate into the inner cavity of the catheter connector, the straight tube-shaped catheter needs to be inserted repeatedly for many times to successfully penetrate into the catheter connector, time is consumed, the exposure time of the tail part of the catheter is long, and the catheter is easily polluted.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present application provides an anesthetic catheter assembly, which includes a catheter and a catheter adapter, wherein the catheter and the catheter adapter are hollow and communicated;

the conduit joint comprises a first joint and a second joint, one end of the first joint is provided with a butt joint part for butt joint with the conduit, and the other end of the first joint is in threaded connection with the second joint;

the pipe has relative head end and tail end, the tail end of pipe is the throat of inside shrink, under the user state, the pipe is inserted through the tail end butt joint portion with pipe connects the butt joint intercommunication, and extend to with second connects threaded connection's position.

The necking at the tail end of the conduit is beneficial to increasing the space between the conduit and the conduit joint after the conduit and the conduit joint are communicated, so that the smaller gap between the tail end part and the inner cavity of the conduit joint is larger when the conduit joint is locked, the conduit joint to be locked has a larger contraction position, and the conduit is prevented from being extruded and deformed due to overlarge local pressure of the conduit joint to the conduit. Meanwhile, the tail end of the pipe in the shape of the necking can be inserted into the pipe joint to be assembled with the pipe joint more conveniently, and when the tail end of the pipe is assembled with the pipe joint, the smaller tail end part is not easy to touch the inner wall of the pipe joint, so that the pollution is effectively avoided.

Further, the length of the inward contracted tail end of the conduit is 0.3-3 mm.

Preferably, the maximum diameter of the tail end of the conduit is 0.5-1.1 mm.

Further, the tail end of the conduit is tapered or hemispherical.

By the arrangement, when the conduit is in butt joint communication with the butt joint part of the conduit joint through the conduit tail end, the rest part of the conduit tail end can be guided into the joint inner cavity by the inclination angle or radian of the conduit tail end.

Furthermore, an elastic connecting pipe is further arranged in the inner cavity of the first joint, and the elastic connecting pipe is sleeved on the outer side of the catheter in a use state.

Wherein, elastic connection pipe's setting can increase the frictional force of pipe in pipe joint, improves pipe and pipe joint's combination fastening nature, effectively realizes the fixed effect of pipe.

Furthermore, the opening of the butt joint end of the butt joint part is inwards sunken to be in a circular truncated cone shape.

The arrangement is such that the abutment guides the catheter into the bore in the centre of the catheter hub.

Furthermore, the first joint is made of at least one part of elastic material, and the locking piece is made of rigid material. After the elastic butt joint part and the rigid locking piece are in threaded connection, the guide pipe can be locked through the inner space contracted by the elastic wall of the butt joint part, and then the guide pipe and the guide pipe joint can be tightly combined together after the guide pipe joint is locked.

Further, the length of the butt joint part is 1-2 cm.

Preferably, the inner diameter of the butt joint part is 0.05-0.4 mm smaller than the maximum diameter of the tail end of the conduit.

Furthermore, the other end of the catheter joint opposite to the butt joint part is provided with a puncture part, and an opening at the end part of the puncture part is inwards sunken to be in a truncated cone shape and is used for being in butt joint communication with infusion equipment storing liquid medicine.

Further, the infusion device is selected from one of a syringe, an infusion bag, and an administration pump.

The application has the following beneficial effects:

the utility model provides an anesthesia catheter subassembly, the tail end of pipe is the throat of inside shrink, less tail end tip is great with the space of pipe connection inner chamber when pipe connection locks, thereby there is bigger shrink position, avoid local pressure too big with the crowded deformation of pipe, meanwhile, less tail end tip is difficult for bumping into pipe connection's inner wall when combining with pipe connection, even bump into pipe connection inner wall also can be along pipe connection inner wall, lean on the angle of inclination or the arc of pipe tail end to guide the pipe tail end in all the other parts entering joint inner chamber, the success rate and the efficiency of anesthesia pipe and pipe connection combination have been improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic cross-sectional view of one embodiment of an anesthesia catheter assembly provided herein;

FIG. 2 is a schematic cross-sectional view of the anesthetic catheter assembly shown in FIG. 1 in a locked condition;

in the figure:

1. a second joint; 11. a piercing section; 12. a second joint thread; 2. an elastic connecting pipe; 3. a first joint; 31. a first joint thread; 4. a conduit; 41. a catheter tail end; 411. necking the tail end of the conduit; 5. And supporting the space.

The specific implementation mode is as follows:

in order to clearly and completely describe the technical solutions in the embodiments of the present invention in the following with reference to the drawings in the embodiments of the present invention, it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms of orientation such as left, right, up, down, front and back in the embodiments of the present invention are only relative concepts or are referred to a normal use state of the product, i.e., a traveling direction of the product, and should not be considered as limiting.

In addition, the dynamic terms such as "relative movement" mentioned in the embodiments of the present invention include not only a positional change but also a movement in which a state changes without a relative change in position such as rotation or rolling.

Finally, it is noted that when an element is referred to as being "on" or "disposed" to another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

The embodiment of the application provides an anesthesia catheter assembly which can be quickly assembled and can effectively prevent blockage, and as shown in fig. 1, the anesthesia catheter assembly comprises a catheter 4 and a catheter connector, wherein the interiors of the catheter 4 and the catheter connector are hollow and communicated for conveying liquid medicine; the conduit joint comprises a first joint 3 and a second joint 1, one end of the first joint 3 is provided with a butt joint part for butt joint with the conduit 4, and the other end of the first joint is in threaded connection with the second joint 1; the conduit 4 has opposite head and tail ends 41, the tail end 41 of the conduit 4 is a contracted mouth which is contracted inwards for enlarging the inner space after the conduit 4 is combined with the conduit joint, and a triangular or arched supporting space 5 is formed between the supporting space and the cavity of the conduit joint, and in a use state, the conduit 4 is inserted into the butt joint part through the tail end 41 to be in butt joint communication with the conduit joint and extends to a position in threaded connection with the second joint 1.

As shown in FIG. 1, in the present application, the tapered end 41 of the conduit 4 is 0.3 to 3mm in length; preferably, the tapered end 41 of the conduit 4 is 0.5mm in length. By the arrangement, the inner space of the combined conduit 4 and the conduit joint is enlarged, the triangular or arched support space 5 is formed between the support space and the cavity of the conduit joint, the gap between the conduit tail end 41 and the inner cavity of the conduit joint is reduced when the conduit joint is buffered and locked, and the rest part of the conduit tail end 41 can be guided into the inner cavity of the conduit joint by the inclination angle of the tapered conduit tail end 41 when the conduit tail end 41 touches the inner wall of the conduit joint.

In this application, the pipe had both to transport the liquid medicine, had to put into the dura mater exocoel in order, if the maximum diameter undersize of pipe tail end 41, not only add the degree of difficulty increase of man-hour, the liquid medicine of not being convenient for simultaneously flows in pipe 4, can reduce the transportation effect of anesthesia pipe 4 on the contrary, of course, the maximum diameter of pipe tail end 41 also can not be too big, oppress nerve, blood vessel when avoiding pipe 4 to put into constrictive dura mater exocoel, can't put into the dura mater exocoel even. Therefore, in the present application, the maximum diameter of the conduit tail end 41 is equal to the maximum diameter of the conduit 4, and is 0.5-1.1 mm; preferably, the maximum diameter of the conduit tail end 41 is 1.0 mm.

The conduit tail end 41 is tapered or hemispherical in this application; when the catheter 4 is inserted into the butt joint part through the tail end 41 of the catheter to be in butt joint communication with the catheter joint and extends to the position connected with the thread at the second joint thread 12, the rest part of the tail end 41 of the catheter is guided to enter the inner cavity of the joint by the inclination angle or radian of the tail end 41 of the catheter, so that the success rate and the efficiency of the combination of the anesthesia catheter and the catheter joint are improved; meanwhile, when the conduit joint is locked, the triangular or arched supporting space 5 is formed between the conduit tail end 41 and the cavity of the conduit joint, so that the conduit tail end 41 can be prevented from being extruded and deformed, and even the necking 411 of the conduit tail end 41 is prevented from being blocked. The conduit 4 is made of thermoplastic elastomer; the cooperation pipe tail end 41 is toper or hemispherical shape, when pipe joint adjustment locking degree, can make pipe tail end 41 resume moulding shape fast, avoids throat 411 to block up.

The butt joint end opening of this application butt joint portion is inwards sunken to be round platform shape to guide pipe 4 to penetrate the hole at pipe joint center.

With reference to fig. 1, an elastic connection tube 2 is further disposed in the inner cavity of the first connector 3, and the elastic connection tube 2 is sleeved outside the catheter 4 in a use state.

Preferably, the first joint 3 is made of at least partially elastic material, and the second joint 1 is made of rigid material. As shown in fig. 1, the first joint 3 has a first joint thread 31 inside the tube wall made of elastic material to realize the threaded connection with the second joint 1. After the elastic first joint 3 part and the rigid second joint 1 are connected in a threaded mode, the guide pipe 4 can be locked through the inner space contracted by the elastic wall of the first joint 3, and therefore the guide pipe 4 and the guide pipe joint can be tightly combined together after the guide pipe joint is locked.

In the structure shown in fig. 1, if the length of the butt joint part is too small, the part for locking after the first joint 3 is combined with the conduit tail end 41 is too short, the conduit tail end 41 is easy to be separated from the conduit joint, and the two are difficult to be stably locked together; however, if the length of the butt portion is too long, not only the trailing end of the tube needs to pass through the excessively long tube joint cavity, and is difficult to be inserted into the bottom of the tube joint cavity, but also the locked section of the tube 4 after locking necessarily shrinks to some extent, which affects the transportation of the liquid medicine in the section, and therefore, the butt portion is too long, which also affects the transportation of the liquid medicine in the tube 4. Therefore, the length of the butt joint part is 1-2 cm in the application; preferably, the length of the butt joint is 1.5 cm.

As shown in fig. 2, in the present application, the locking of the first connector 3 and the conduit 4 by the second connector 1 is achieved by increasing the pressure between the first connector 3 and the conduit 4, thereby increasing the friction between the first connector 3 and the conduit 4, so that an excessive abutment inner diameter would prevent sufficient pressure from being given between the first connector 3 and the conduit 4 when the second connector 1 locks the first connector 3; an excessively small internal diameter of the abutment will make it difficult to spread the abutment sufficiently far enough by the angle of inclination or arc of the conduit end 41 to allow the conduit end 41 to enter the lumen of the connector 1. Therefore, the inner diameter of the butt joint part is 0.05-0.4 mm smaller than the maximum diameter of the tail end 41 of the conduit in the application; preferably, the internal diameter of the abutment is 0.2mm less than the maximum diameter of the conduit tail 41.

This application pipe joint is equipped with puncturing part 11 with the other end that butt joint part is relative, and the tip opening of puncturing part 11 is inwards sunken to be the round platform shape for with store the infusion equipment butt joint intercommunication of liquid medicine. The infusion device in this application is selected from one of a syringe, an infusion bag, and an administration pump.

With reference to the above description, in use, the tail end 41 of the catheter is placed into the catheter connector through the butt joint portion to the position where the tail end is in threaded connection with the second connector 1, then the second connector 1 is embedded outside the first connector 3 through threads, the catheter connector and the catheter 4 are locked, and finally the puncturing portion 11 is in butt joint communication with a syringe, an infusion bag or an administration pump storing a liquid medicine, so that the liquid medicine can be delivered.

It can be understood that, for the anesthetic tube assembly with the above structure, not only can be applied to the transportation of anesthetic liquid medicine, but also can be applied to the joints of water supply and drainage pipelines or other fluid pipelines after the material and the size of the tube assembly are changed, so as to realize the stable and efficient connection between the tube and the joints, and the structure of the tube assembly can be referred to the above description, and is not described again here.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An anesthesia catheter assembly is characterized by comprising a catheter and a catheter connector, wherein the catheter and the catheter connector are hollow and communicated;

2. An anesthesia catheter assembly of claim 1, wherein said inwardly tapered end of said catheter has a length of 0.3-3 mm.

3. An anesthesia catheter assembly of claim 2, wherein said catheter tail end constriction is tapered or hemispherical.

4. An anesthesia catheter assembly of claim 1, wherein said abutment end opening of said abutment portion is recessed inwardly in a truncated cone shape.

5. An anesthesia catheter assembly of claim 1, wherein said first connector further comprises an elastic connection tube disposed in said lumen, said elastic connection tube being adapted to be received outside said catheter in use.

6. The anesthesia catheter assembly of claim 1, wherein said first connector is at least partially formed of an elastomeric material and said second connector is formed of a rigid material.

7. The anesthesia catheter assembly of claim 1, wherein said catheter is formed of a thermoplastic elastomer.

8. An anesthesia catheter assembly of claim 1, wherein said abutment has a length of 1-2 cm.

9. An anesthesia catheter assembly of any one of claims 1-8, wherein said second connector is provided with a puncturing part at the end opposite to the threaded connection of the first connector, said puncturing part having an end opening recessed inwardly in a truncated cone shape for docking communication with an infusion device storing a medical fluid.

10. An anesthesia catheter assembly of claim 9, wherein said infusion device is selected from the group consisting of a syringe, an infusion bag, and an administration pump.