CN213554748U

CN213554748U - Physical plugging type anti-backflow central venous catheter

Info

Publication number: CN213554748U
Application number: CN202021606436.2U
Authority: CN
Inventors: 刘光优
Original assignee: General Hospital of Chinese PLA Hainan Branch
Current assignee: General Hospital of Chinese PLA Hainan Branch
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-06-29
Anticipated expiration: 2030-08-05

Abstract

The utility model discloses a physical blocking type anti-backflow central venous catheter, which comprises a venous catheter main body, wherein the venous catheter main body is divided into an output sub catheter and an input sub catheter; a first control thin catheter is arranged in the output sub-catheter, and a second control thin catheter is arranged in the input sub-catheter; the tail end of the first control thin catheter is provided with a first control sacculus in a penetrating way, and the tail end of the second control thin catheter is provided with a second control sacculus; the influence of poor blood coagulation of a patient caused by the use of heparin for sealing a tube in the prior art is abandoned; the plugging is more natural, and no other influence is caused to the patient.

Description

Physical plugging type anti-backflow central venous catheter

Technical Field

The utility model relates to a medical treatment technical field, more specifically say, the utility model relates to a physics shutoff formula anti-return central venous catheter.

Background

Central venous catheters, which are one type of intravascular tubes, are placed in the great veins and are typically used to measure central venous pressure to assess circulatory physiological parameters; or for operations with high bleeding volumes, or for maintaining blood pressure in emergency rooms. The infusion set can be used for long-term parenteral nutrition, long-term antibiotic injection and long-term analgesic injection, can also be used for hemodialysis and tumor chemotherapy, can establish a good blood channel for a patient who is repeatedly transfused, and avoids the pain of repeated puncture.

When the existing central venous catheter commonly used for critical patients is used for intravenous infusion and hemofiltration treatment, the central venous catheter needs to be inserted into the body of the patient for a long time, but when the central venous catheter does not need to be operated temporarily, the central venous catheter needs to be sealed by heparin, but the central venous catheter is sealed by the heparin, so that the blood coagulation of the patient is adversely affected.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above defects in the prior art, the embodiment of the utility model provides a physical blocking type anti-reflux central venous catheter, which abandons the influence of poor blood coagulation of patients caused by heparin tube sealing in the prior art; the plugging is more natural, and no other influence is caused to the patient.

In order to achieve the above object, the utility model provides a following technical scheme:

a physical blocking type backflow-preventing central venous catheter comprises a venous catheter main body, wherein the interior of the venous catheter main body is divided into an output sub-catheter and an input sub-catheter; a first control thin catheter is arranged in the output sub-catheter, and a second control thin catheter is arranged in the input sub-catheter; the tail end of the first control fine catheter is provided with a first control sacculus in a penetrating way, and the tail end of the second control fine catheter is provided with a second control sacculus.

Preferably, the injection device further comprises a first injection connector and a second injection connector; the first injection connector is communicated with one end of the first control fine catheter far away from the first control balloon; the second injection connector is communicated with the second control fine catheter far away from the second control balloon.

Preferably, the bottom of the needle tube sleeve is communicated with the first injection connector, a first hollow movable groove is formed in the needle tube sleeve, an inner cavity of the first hollow movable groove is rotatably connected with a middle shaft movable rod, an external thread sleeve block is fixedly mounted on the outer wall of the middle shaft movable rod, an internal thread fixing seat is fixedly mounted at the top of the inner cavity of the first hollow movable groove, the external thread sleeve block is in threaded connection with the internal thread fixing seat, and a disc-shaped sealing plug is mounted at the bottom of the middle shaft movable rod.

Preferably, a second hollow movable groove is formed in the disc-shaped sealing plug, the first hollow movable groove is communicated with the second hollow movable groove, a rotary supporting disc is fixedly mounted at the bottom of the middle shaft movable rod through a bolt, and the rotary supporting disc is rotatably connected to an inner cavity of the second hollow movable groove.

Preferably, the surface of the disc-shaped sealing plug is fixedly provided with an annular sealing rubber ring through an adhesive, and the annular sealing rubber ring is attached to the inner cavity side wall of the first hollow movable groove.

Preferably, the top and the bottom of the internal thread fixing seat are both fixedly provided with an annular connecting seat, the annular connecting seat is arranged in an inner cavity of the first hollow movable groove, and the internal thread fixing seat is fixed at the top of the needle tube sleeve through the annular connecting seat.

Preferably, the top of annular connecting seat fixedly mounted has annular bearing piece, annular bearing piece fixed mounting is at the telescopic top of needle tubing, the needle tubing sleeve all is the integral type setting with annular bearing piece.

Preferably, a plurality of arc support cantilevers are fixedly mounted at the top of the external thread sleeve block, and an annular grip is fixedly mounted at the top of each arc support cantilever through a bolt.

Preferably, the bottom of the needle tube sleeve (1) is communicated with a needle tube connecting section (16), the bottom of the needle tube connecting section (16) is communicated with an infusion connecting seat (17), and the needle tube connecting section (16) is communicated with one end of the intravenous catheter main body (2) through the infusion connecting seat (17).

The utility model discloses a technological effect and advantage:

the utility model is provided with a first control thin catheter and a first control sacculus communicated with the first control thin catheter, and a second control thin catheter and a second control sacculus communicated with the second control thin catheter; the first control balloon and the second control balloon can be used for swelling or shrinking to seal the output sub-catheter and the input sub-catheter, and the adverse effect of a heparin tube sealing on blood coagulation of a patient in the prior art is eliminated.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of a partial structure of the present invention (1).

Fig. 3 is a partial sectional view of the present invention (1).

Fig. 4 is an enlarged view of a portion a of fig. 3 according to the present invention.

Fig. 5 is an enlarged view of a portion B of fig. 1.

The reference signs are: the intravenous injection device comprises a needle tube sleeve 1, an intravenous catheter body 2, a first hollow movable groove 4, a middle shaft movable rod 5, an external thread sleeve block 6, an internal thread fixed seat 7, a disc-shaped sealing plug 8, a second hollow movable groove 9, a rotary supporting disk 10, an annular sealing rubber ring 11, an annular connecting seat 12, an annular bearing block 13, an arc-shaped supporting cantilever 14, an annular grip 15, a needle tube connecting section 16, an infusion connecting seat 17, an output sub-catheter 18, an input sub-catheter 19, a first control fine catheter 20, a second control fine catheter 21, a first control balloon 22, a second control balloon 23, a first injection joint 24 and a second injection joint 25.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1-4 of the specification, the utility model discloses physics shutoff formula anti-return central venous catheter:

comprises an intravenous catheter main body 2, wherein the intravenous catheter main body 2 is internally divided into an output sub-catheter 18 and an input sub-catheter 19; a first control thin catheter 20 is arranged in the output sub-catheter 18, and a second control thin catheter 21 is arranged in the input sub-catheter 19; a first control balloon 22 is arranged at the tail end of the first control fine catheter 20 in a penetrating way, and a second control balloon 23 is arranged at the tail end of the second control fine catheter 21. As shown in fig. 5, the output sub-catheter in the intravenous catheter main body is responsible for outputting blood, and the input sub-catheter is responsible for inputting saline or blood or drugs to be infused into the patient.

In a preferred further embodiment of this embodiment, the injection device further comprises a first injection connector (24) and a second injection connector (25); the first injection connector (24) is communicated with one end of the first control thin catheter (20) far away from the first control balloon (22); the second injection connector (25) is communicated with the second control thin catheter (21) far away from the second control balloon (23).

As shown in fig. 5, for example, in case of blood filtration of a critical patient, one end of the physical blocking type anti-backflow central venous catheter needs to be communicated with a hemodialysis machine, and the other end is inserted into the body of the patient; the blood of the patient enters the hemodialysis machine through the output sub-catheter, is treated by the hemodialysis machine and then is input into the body of the patient through the input sub-catheter; the operation process is not continuous for a long time, sometimes the output sub-catheter needs to be independently plugged, sometimes the input sub-catheter needs to be plugged, and sometimes both the output sub-catheter and the input sub-catheter need to be plugged; when the output sub-catheter needs to be independently blocked, normal saline is injected into the first control sacculus through the first injection connector to be expanded, and the output sub-catheter is blocked; when the normal saline is input into the sub-catheter for plugging in the same way, the normal saline is injected into the second control balloon through the second injection joint to be expanded, and the normal saline is input into the sub-catheter for plugging.

As shown in figure 1, the first injection joint is arranged in a connecting mode of a needle tube sleeve, and the second injection joint is arranged in a connecting mode of hanging physiological saline, so that multiple modes are selected and arranged.

A further preferred embodiment of the present embodiment may include a needle tube sleeve 1, the bottom of the needle tube sleeve 1 is communicated with a first injection joint, so as to achieve the effect of conveying physiological saline, a first hollow movable groove 4 is disposed inside the needle tube sleeve 1, an inner cavity of the first hollow movable groove 4 is rotatably connected with a middle shaft movable rod 5, an external thread sleeve block 6 is fixedly mounted on the outer wall of the middle shaft movable rod 5, an internal thread fixing seat 7 is fixedly mounted on the top of the inner cavity of the first hollow movable groove 4, the external thread sleeve block 6 is in threaded connection with the internal thread fixing seat 7, a disc-shaped sealing plug 8 is mounted at the bottom of the middle shaft movable rod 5, a second hollow movable groove 9 is disposed inside the disc-shaped sealing plug 8, the first hollow movable groove 4 is communicated with the second hollow movable groove 9, a rotation support plate 10 is fixedly mounted at the bottom of the middle shaft movable rod 5 through a bolt, the rotation support, axis movable rod 5 and external screw thread sleeve block 6 are when rotatory, and female thread fixing base 7 can reach the effect at the uniform velocity to promote the stability of shutoff, prevent to expand too fast, cause the problem of secondary destruction to venous catheter, when axis movable rod 5 and the rotatory advancing of external screw thread sleeve block 6, rotation support dish 10 can rotate the inner chamber of connecting at second cavity activity groove 9.

The surface of the disc-shaped sealing plug 8 is fixedly provided with an annular sealing rubber ring 11 through an adhesive, the annular sealing rubber ring 11 is attached to the inner cavity side wall of the first hollow movable groove 4, the top and the bottom of the internal thread fixing seat 7 are both fixedly provided with an annular connecting seat 12, the annular connecting seat 12 is made of rubber type soft materials, the annular connecting seat 12 is arranged in the inner cavity of the first hollow movable groove 4, the internal thread fixing seat 7 is fixed at the top of the needle tube sleeve 1 through the annular connecting seat 12, the top of the annular connecting seat 12 is fixedly provided with an annular bearing block 13, the annular bearing block 13 is fixedly arranged at the top of the needle tube sleeve 1, the arrangement of the annular bearing block 13 can improve the support stability, the needle tube sleeve 1 and the annular bearing block 13 are both arranged in an integrated manner, the top of the external thread sleeve block 6 is fixedly provided with a plurality of arc-shaped support cantilevers 14, and the, the bottom intercommunication of needle tubing sleeve 1 is equipped with needle tubing linkage segment 16, and the bottom intercommunication of needle tubing linkage segment 16 is equipped with infusion connecting seat 17, and needle tubing linkage segment 16 sets up the one end at plastic type pipe 2 through infusion connecting seat 17 intercommunication, and the convenience of connection can be promoted in the setting of needle tubing linkage segment 16 and infusion connecting seat 17.

The working principle is as follows: at first take out the utility model discloses required spare part, so as to install and use, in the time of the in-service use, utilize the rotatory external screw thread nest block 6 of annular handle 15, external screw thread nest block 6 utilizes female fixing base 7 to be rotatory advancing, promote second cavity movable groove 9 and disc sealing plug 8 simultaneously to the direction of needle tubing linkage segment 16 gos forward, utilize the removal of disc sealing plug 8 at first cavity movable groove 4 inner chamber, can reach the effect of water injection, utilize infusion connecting seat 17 to connect plastic type pipe 2 in the one end of needle tubing sleeve 1, first cavity movable groove 4 inner chamber utilizes infusion connecting seat 17 to add the effect that normal saline reaches physics shutoff ductus venosus earlier.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The physical blocking type backflow-preventing central venous catheter is characterized by comprising a venous catheter main body (2), wherein the interior of the venous catheter main body (2) is divided into an output sub-catheter (18) and an input sub-catheter (19); a first control thin catheter (20) is arranged in the output sub-catheter (18), and a second control thin catheter (21) is arranged in the input sub-catheter (19);

the tail end of the first control thin catheter (20) is provided with a first control sacculus (22) in a penetrating way, and the tail end of the second control thin catheter (21) is provided with a second control sacculus (23).

2. The physically-occluded reflux-resistant central venous catheter as claimed in claim 1, wherein: also comprises a first injection connector (24) and a second injection connector (25);

the first injection connector (24) is communicated with one end of the first control thin catheter (20) far away from the first control balloon (22); the second injection connector (25) is communicated with the second control thin catheter (21) far away from the second control balloon (23).

3. The physically-occluded reflux-resistant central venous catheter as claimed in claim 2, wherein: the bottom and the first injection of needle tubing sleeve (1) connect the intercommunication, the inside of needle tubing sleeve (1) is equipped with first cavity movable groove (4), the inner chamber of first cavity movable groove (4) rotates and is connected with axis movable rod (5), the outer wall fixed mounting of axis movable rod (5) has external screw thread cover block (6), the inner chamber top fixed mounting in first cavity movable groove (4) has female thread fixing base (7), external screw thread cover block (6) and female thread fixing base (7) threaded connection, disc sealing plug (8) are installed to the bottom of axis movable rod (5).

4. The physically-occluded reflux-preventing central venous catheter as claimed in claim 3, wherein: a second hollow movable groove (9) is formed in the disc-shaped sealing plug (8), the first hollow movable groove (4) is communicated with the second hollow movable groove (9), a rotary supporting disc (10) is fixedly mounted at the bottom of the middle shaft movable rod (5) through a bolt, and the rotary supporting disc (10) is rotatably connected to an inner cavity of the second hollow movable groove (9).

5. The physically-occluded reflux-preventing central venous catheter as claimed in claim 4, wherein: the surface of the disc-shaped sealing plug (8) is fixedly provided with an annular sealing rubber ring (11) through an adhesive, and the annular sealing rubber ring (11) is attached to the inner cavity side wall of the first hollow movable groove (4).

6. The physically-occluded reflux-preventing central venous catheter as claimed in claim 5, wherein: the needle tube sleeve is characterized in that annular connecting seats (12) are fixedly mounted at the top and the bottom of the internal thread fixing seat (7), the annular connecting seats (12) are arranged in the inner cavity of the first hollow movable groove (4), and the internal thread fixing seat (7) is fixed at the top of the needle tube sleeve (1) through the annular connecting seats (12).

7. The physically-occluded reflux-preventing central venous catheter as claimed in claim 6, wherein: the needle tube connecting structure is characterized in that an annular bearing block (13) is fixedly mounted at the top of the annular connecting seat (12), the annular bearing block (13) is fixedly mounted at the top of the needle tube sleeve (1), and the needle tube sleeve (1) and the annular bearing block (13) are arranged in an integrated mode.

8. The physically-occluded reflux-preventing central venous catheter as claimed in claim 7, wherein: the top fixed mounting of external screw thread nest block (6) has a plurality of arcs to support cantilever (14), and is a plurality of the top of arc support cantilever (14) all has annular handle (15) through bolt fixed mounting.

9. The physically-occluded reflux-preventing central venous catheter as claimed in claim 8, wherein: the bottom of the needle tube sleeve (1) is communicated with a needle tube connecting section (16), the bottom of the needle tube connecting section (16) is communicated with an infusion connecting seat (17), and the needle tube connecting section (16) is communicated with one end of the intravenous catheter main body (2) through the infusion connecting seat (17).