CN213077160U

CN213077160U - Detachable hemodialysis double-cavity central venous catheter

Info

Publication number: CN213077160U
Application number: CN202020340922.8U
Authority: CN
Inventors: 汪开荣
Original assignee: Individual
Current assignee: Anqing Municipal Hospital
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2021-04-30
Anticipated expiration: 2030-03-18

Abstract

The utility model belongs to the technical field of the ductus venosus, especially, detachable blood passes through two-chamber central ductus venosus, including pipe connection seat and two-chamber pipe, the sealed head has been cup jointed in pipe connection seat's link slip, pipe connection seat's link slides along its axis direction and is provided with sliding seal card structure. This detachable hemodialysis two-chamber central venous catheter, through setting up the sealing, reached and reached sealed effect when easily operating the connection effect, during the connection, it is manual to slide the sleeve pipe to the left side, the sleeve pipe drives the fixed ring inner wall on its inside elastic snap ring and the surperficial extrusion of stroke awl ring and expands, insert the two-chamber pipe to the inner wall depths of interface along the surface of catheter connection seat again, loosen the sleeve pipe this moment, solid fixed ring on the reset spring reverse promotion elastic snap ring inserts the fixed slot, elastic snap ring is under its self elastic action, go into the fixed slot with two-chamber pipe card, realize sealing.

Description

Detachable hemodialysis double-cavity central venous catheter

Technical Field

The utility model relates to a venous catheter technical field especially relates to a detachable blood passes through two-chamber central venous catheter.

Background

The central venous catheter belongs to one of intravascular tubes and is placed in a great vein;

as shown in figure 1, the operation procedure and the materials used in catheter indwelling are not satisfactory, for example, the tube placing by the tearing-off sheath method has a large amount of bleeding due to the structural defect of the tearing-off sheath; when using, catheter connecting seat 1 need get rid of sealed head 2 before using just can carry out the intercommunication with two-chamber pipe 3, and catheter connecting seat 1 all has sealed loaded down with trivial details and lead to the inconvenience of operation when being connected or demolising with two-chamber pipe 3.

SUMMERY OF THE UTILITY MODEL

Based on all there is sealed loaded down with trivial details and technical problem that leads to the inconvenience of operation when current conduit coupling seat and two-chamber pipe connection or demolish, the utility model provides a detachable blood passes through two-chamber central venous catheter.

The utility model provides a detachable blood passes through two-chamber central venous catheter, including pipe connecting seat and two-chamber pipe, the link of pipe connecting seat slides and has cup jointed sealed head, the link of pipe connecting seat slides along its axis direction and is provided with the sealed card structure of sliding, the sealed card structure of sliding will the pipe connecting seat with the one end that two-chamber pipe is relative feeds through, the blood groove has been seted up on the surface of two-chamber pipe.

Preferably, the sliding seal clamping structure comprises a force application part and a sealing part, and the force application part transversely applies force to the sealing part to clamp the double-cavity catheter on the catheter connecting seat.

Preferably, force application portion includes the holding ring, the inner wall of holding ring is fixed cup joint on the surface of catheter connecting seat, the catheter connecting seat with the equal slip of surface of holding ring has cup jointed the sleeve pipe, sheathed tube surface is provided with and is used for skid-proof annular knurl, sheathed tube one end terminal surface articulates there is the sealed lid that seals its port all the time under no exogenic action.

Through above-mentioned technical scheme, sealed lid can replace original sealed head, need not the manual work during the use and open sealed head, and use the back, sealed lid still can the self-sealing live the sleeve pipe, avoids causing the problem of bacterial infection after contacting with the air.

Preferably, a return spring is sleeved at a gap between the sleeve and the catheter connecting seat in a sliding manner, and free ends of two ends of the return spring are respectively fixedly connected with the end surface of the positioning ring and the inner wall of the sleeve.

Preferably, the sealing part includes radial groove, radial groove set up in sheathed tube inner wall department, the inner wall in radial groove slides and has cup jointed the snap ring, the solid fixed ring of snap ring's inner wall fixedly connected with, the surface of catheter connecting seat seted up with the fixed slot of solid fixed ring looks adaptation, gu the fixed ring's surface cup joints with the inner wall of fixed slot slides.

Preferably, the outer surface of the catheter connecting seat close to the end face of the positioning ring is fixedly connected with a stroke conical ring which expands outwards to form the elastic snap ring, and the outer surface of the stroke conical ring is in sliding sleeve connection with the inner wall of the fixing ring.

Preferably, the outer surface of the catheter connecting seat, which is close to the small end of the stroke conical ring, is transversely provided with a port which is inserted into the double-cavity catheter, and the double-cavity catheter slides from right to left to be sleeved on the fixing groove and then is inserted into the inner wall of the port.

The utility model provides a beneficial effect does:

1. through setting up application of force portion, reached and utilized reset spring's elasticity, blocked two-chamber pipe with the elastic snap ring in the sealing, for it provides power, and can block two-chamber pipe all the time, does not let it drop from the surface of two-chamber pipe, and its principle adopts the connection principle of movable joint on the air pump, when connecting or untie, easy operation.

2. Through setting up the sealing, reached and reached sealed effect when easily operating the connection effect, when connecting, it is manual to slide the sleeve pipe to the left side, the sleeve pipe drives the solid fixed ring inner wall on its inside resilient snap ring and the surperficial extrusion of stroke awl ring and expands, insert the double-chamber pipe to the inner wall depths of interface along the surface of catheter connecting seat again, loosen the sleeve pipe this moment, the solid fixed ring that reset spring reverse promotion resilient snap ring was last inserts the fixed slot, resilient snap ring is under its self elastic action, go into the fixed slot with double-chamber pipe card, realize sealing.

Drawings

Fig. 1 is a prior art external view of a detachable hemodialysis double-lumen central venous catheter according to the present invention;

fig. 2 is a half sectional view of a catheter connecting seat structure of a detachable hemodialysis double-lumen central venous catheter provided by the present invention;

fig. 3 is an enlarged view of the double lumen catheter clamping at a in fig. 2 of the detachable hemodialysis double lumen central venous catheter of the present invention;

fig. 4 is an enlarged view of the detachable hemodialysis double-lumen central venous catheter shown in fig. 2, before the double-lumen catheter at a is clamped;

fig. 5 is a diagram showing the expansion and reduction contrast of the elastic snap ring structure of the detachable hemodialysis double-lumen central venous catheter according to the present invention;

fig. 6 is a structural connection diagram of a catheter connecting seat of a detachable hemodialysis double-lumen central venous catheter according to the present invention;

fig. 7 is a perspective view of the double-lumen catheter structure of the detachable blood-permeable double-lumen central venous catheter provided by the utility model.

In the figure: 1. a catheter connecting base; 2. a sealing head; 3. a double lumen catheter; 31. a blood tank; 4. a positioning ring; 41. a sleeve; 42. a sealing cover; 43. a return spring; 5. a radial slot; 51. an elastic snap ring; 52. a fixing ring; 53. fixing grooves; 54. a travel conical ring; 55. an interface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-7, a detachable hemodialysis double-lumen central venous catheter comprises a catheter connecting seat 1 and a double-lumen catheter 3, wherein a connecting end of the catheter connecting seat 1 is slidably sleeved with a sealing head 2, the connecting end of the catheter connecting seat 1 is slidably provided with a sliding sealing clamping structure along the axis direction, the sliding sealing clamping structure is used for communicating one ends of the catheter connecting seat 1 and the double-lumen catheter 3, and a blood groove 31 is formed in the surface of the double-lumen catheter 3.

Further, the sliding seal clamping structure comprises a force application part and a sealing part, and the force application part transversely applies force to the sealing part to clamp the double-cavity catheter 3 on the catheter connecting seat 1.

Further, application of force portion includes holding ring 4, and the inner wall of holding ring 4 is fixed to be cup jointed on catheter connecting seat 1's surface, and catheter connecting seat 1 has all slided to cup joint sleeve pipe 41 with holding ring 4's surface, and sleeve pipe 41's surface is provided with and is used for skid-proof annular knurl, and sleeve pipe 41's one end terminal surface articulates there is the sealed lid 42 that seals its port all the time under the exogenic action.

Sealed lid 42 can replace original sealed head 2, need not the manual work during the use and open sealed head 2, and uses the back, and sealed lid 42 still can seal up sleeve pipe 41 automatically, avoids leading to the problem of bacterial infection after contacting with the air.

Furthermore, a return spring 43 is sleeved at the gap between the sleeve 41 and the catheter connecting seat 1 in a sliding manner, and the free ends of the two ends of the return spring 43 are respectively fixedly connected with the end surface of the positioning ring 4 and the inner wall of the sleeve 41;

through setting up application of force portion, reached and utilized reset spring 43's elasticity, the circlip 51 in with the sealing portion blocks two-chamber pipe 3, for it provides power, and can block two-chamber pipe 3 all the time, does not let it drop from two-chamber pipe 3's surface, and its principle adopts the connection principle of the movable joint on the air pump, when connecting or untie, easy operation.

Further, the sealing portion includes radial groove 5, and radial groove 5 sets up in sleeve 41's inner wall department, and the inner wall slip of radial groove 5 has cup jointed circlip 51, and circlip 51's the solid fixed ring 52 of inner wall fixedly connected with, the fixed slot 53 with solid fixed ring 52 looks adaptation is seted up to the surface of catheter connecting seat 1, and solid fixed ring 52's surface cup joints with the inner wall slip of fixed slot 53.

Furthermore, a stroke conical ring 54 which expands the elastic snap ring 51 outwards is fixedly connected to the outer surface of the catheter connecting seat 1 close to the end face of the positioning ring 4, and the outer surface of the stroke conical ring 54 is in sliding sleeve connection with the inner wall of the fixing ring 52.

Furthermore, the outer surface of the catheter connecting seat 1 close to the small end of the stroke conical ring 54 is transversely provided with a port 55 for inserting the double-lumen catheter 3, and the double-lumen catheter 3 is inserted into the inner wall of the port 55 after being sleeved on the fixing groove 53 in a sliding manner from right to left;

through setting up the sealing, reached and reached sealed effect when easily operating the connection effect, when connecting, it is manual to slide sleeve 41 to the left side, sleeve 41 drives the surface extrusion of solid fixed ring 52 inner wall and stroke awl ring 54 on its inside circlip 51 and expands, insert the inner wall depths to interface 55 with two-chamber pipe 3 along the surface of catheter connecting seat 1 again, loosen sleeve 41 this moment, solid fixed ring 52 on reset spring 43 reverse promotion circlip 51 inserts fixed slot 53, circlip 51 is under its self elastic action, go into fixed slot 53 with two-chamber pipe 3 card, realize sealedly.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a detachable hemodialysis two-chamber central venous catheter, includes catheter connection seat (1) and two-chamber pipe (3), the connection end of catheter connection seat (1) slides and has cup jointed sealed head (2), its characterized in that: the connecting end of catheter connecting seat (1) slides along its axis direction and is provided with sliding seal card structure, sliding seal card structure will catheter connecting seat (1) with the relative one end of two-chamber pipe (3) communicates, blood groove (31) have been seted up on the surface of two-chamber pipe (3).

2. A detachable hemodialysis dual-lumen central venous catheter as claimed in claim 1, wherein: the sliding seal clamping structure comprises a force application part and a sealing part, and the double-cavity catheter (3) is clamped on the catheter connecting seat (1) after the force application part transversely applies force to the sealing part.

3. A detachable hemodialysis dual-lumen central venous catheter as claimed in claim 2, wherein: the application of force portion includes holding ring (4), the inner wall of holding ring (4) is fixed cup joint on the surface of catheter connection seat (1), catheter connection seat (1) with sleeve pipe (41) have all been cup jointed in the surface of holding ring (4) slip, the surface of sleeve pipe (41) is provided with and is used for skid-proof annular knurl, the one end terminal surface of sleeve pipe (41) articulates there is sealed lid (42) that seals its port all the time under no exogenic action.

4. A detachable hemodialysis dual-lumen central venous catheter as claimed in claim 3, wherein: a return spring (43) is sleeved at a gap between the sleeve (41) and the catheter connecting seat (1) in a sliding manner, and the free ends of the two ends of the return spring (43) are respectively fixedly connected with the end surface of the positioning ring (4) and the inner wall of the sleeve (41).

5. A detachable hemodialysis dual-lumen central venous catheter as in claim 4, wherein: the sealing part comprises a radial groove (5), the radial groove (5) is arranged at the inner wall of the sleeve (41), an elastic snap ring (51) is sleeved on the inner wall of the radial groove (5) in a sliding mode, a fixing ring (52) is fixedly connected to the inner wall of the elastic snap ring (51), the outer surface of the catheter connecting seat (1) is provided with a fixing groove (53) matched with the fixing ring (52), and the surface of the fixing ring (52) is sleeved with the inner wall of the fixing groove (53) in a sliding mode.

6. A detachable hemodialysis dual-lumen central venous catheter as in claim 5, wherein: the outer surface of the catheter connecting seat (1) close to the end face of the positioning ring (4) is fixedly connected with a stroke conical ring (54) which expands outwards and is provided with the elastic snap ring (51), and the outer surface of the stroke conical ring (54) is in sliding sleeve connection with the inner wall of the fixing ring (52).

7. A detachable hemodialysis dual-lumen central venous catheter as in claim 6, wherein: the outer surface of the catheter connecting seat (1) close to the small end of the stroke conical ring (54) is transversely provided with a port (55) inserted with the double-cavity catheter (3), and the double-cavity catheter (3) is sleeved on the fixing groove (53) in a sliding mode from right to left and then inserted into the inner wall of the port (55).