CN214912332U

CN214912332U - Central venous catheter

Info

Publication number: CN214912332U
Application number: CN202120273587.9U
Authority: CN
Inventors: 孙盈盈
Original assignee: Anhui Children's Hospital
Current assignee: Anhui Children's Hospital
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-11-30
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a central venous catheter, which comprises a needle seat, one end of the needle seat is fixedly provided with a sleeve communicated with an inner cavity of the needle seat, the sleeve comprises a substrate layer, a spiral metal wire is embedded in the substrate layer, the two ends of the substrate layer are respectively coated with a first antibacterial layer and a second antibacterial layer, one side of the first antibacterial layer, which is far away from the substrate layer, is coated with a first anticoagulation layer, and one side of the second antibacterial layer, which is far away from the substrate layer, is coated with a second anticoagulation layer; the outer side of the sleeve is also sleeved with a polyester sleeve, and the inner side and the outer side of the polyester sleeve are coated with a third antibacterial layer; the needle seat is characterized in that a rubber plug and a puncture needle are further fixedly arranged in the inner cavity of the needle seat, and the puncture needle sequentially penetrates through the rubber plug and the sleeve and is in sliding connection with the rubber plug and the sleeve. The utility model provides a problem that the sleeve pipe is buckled easily, and this pipe has good antibiotic anti-coagulation effect to the risk of complication appears after effectual reduction uses.

Description

Central venous catheter

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to central venous catheter.

Background

The central venous catheter placement is a monitoring and treating means commonly used in clinic, a simple and painless method is provided for intravenous drug treatment, rapid transfusion and volume treatment of intraoperative hemorrhagic shock, total parenteral central venous nutrition, blood transfusion and blood supplies, blood sample collection, central venous pressure monitoring and the like through a fixed central venous catheter inlet, and compared with a single-cavity central venous catheter, the double-cavity central venous catheter can simultaneously provide two independent transfusion passages, has larger flow rate, so that the clinical application way is very wide.

The existing central venous catheter mainly has the following problems: (1) the sleeve at the front end of the central venous catheter is easy to bend to cause the blockage of a pipeline; (2) the antibacterial effect is poor, so that complications are easy to generate under the condition of long-time use; (3) the anticoagulation effect is poor, and blood is easy to coagulate in the pipeline so as to block the pipeline.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a central venous catheter, solved the easy problem of buckling of sleeve pipe, and this pipe has good antibiotic anti-coagulation effect to the risk that complication appears after effectual reduction uses.

According to the utility model provides a central venous catheter, including the needle file, the fixed sleeve pipe that is provided with needle file inner chamber intercommunication of needle file one end, the sleeve pipe includes the substrate layer, the substrate layer is embedded to have the spiral shaped wire, the both ends of substrate layer have coated respectively first antibiotic layer and second antibiotic layer, first antibiotic layer is kept away from one side coating of substrate layer has first anticoagulation layer, the antibiotic layer of second is kept away from one side coating of substrate layer has the second anticoagulation layer.

Preferably, the outer side of the sleeve is further sleeved with a polyester sleeve, and the inner side and the outer side of the polyester sleeve are coated with a third antibacterial layer.

Preferably, the length of the sleeve is 6-12 cm.

Preferably, the inner cavity of the needle seat is further fixedly provided with a rubber plug and a puncture needle, and the puncture needle sequentially penetrates through the rubber plug and the sleeve and is in sliding connection with the rubber plug and the sleeve.

Preferably, the needle holder further comprises an installation pipe, the installation pipe is detachably connected with one end, far away from the needle holder, of the sleeve, one end of the puncture needle is inserted into the installation pipe and is in sliding connection with the installation pipe, the installation pipe further comprises a drawn wire fixedly connected with the puncture needle, the drawn wire is far away from one end of the puncture needle and is far away from the installation pipe, the rotating wheel is fixedly connected with one end of the needle holder, a fixing rod is further inserted into an inner cavity of the installation pipe and is used for fixing the puncture needle, and a fixing head is detachably arranged at one end, far away from the needle holder, of the installation pipe and is used for fixing the fixing rod.

Preferably, the rotating wheel is located on the side wall of the installation pipe, and the rotating wheel protrudes out of the side wall of the installation pipe.

Preferably, the distance from the rotating wheel to the bottom of the inner cavity of the installation tube is not less than the length of the puncture needle, so that the puncture needle can be completely retracted into the installation tube.

Preferably, the mounting tube is telescopic.

The utility model provides a beneficial effect is:

the spiral metal wire is embedded in the substrate layer, so that the problem that the sleeve is blocked due to bending is solved, the antibacterial layer and the anticoagulation layer are coated on the two sides of the substrate layer, the anticoagulation layer ensures the smoothness of the sleeve and reduces the problem of sleeve blockage, and the antibacterial layer has a good antibacterial effect, so that the risk of complications caused by use of the central venous catheter is reduced; the fixing device comprises a fixing rod, a rotating wheel, a mounting pipe, a pull rod, a fixing head and a fixing head, wherein the mounting pipe is arranged at one end of the puncture needle, the pull rod and the fixing rod are arranged in the mounting pipe, the pull rod can be retracted by rotating the rotating wheel, so that the puncture needle is retracted into the mounting pipe, the puncture needle is prevented from being injured by medical workers in the subsequent treatment process, the fixing rod is used for supporting the puncture needle, the problem that the puncture needle is retracted into a sleeve in the puncture process is avoided, and when the puncture needle needs to be retracted into the mounting pipe, the fixing head is separated from the mounting pipe, and the rotating wheel can be rotated to retract the puncture needle into the mounting pipe; the installation pipe can set up to flexible to reduce the space that the installation pipe occupy.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of a central venous catheter according to the present invention;

FIG. 2 is an enlarged view of a portion A-A of the central venous catheter of the present invention;

FIG. 3 is a partial enlarged view of the central venous catheter according to the present invention from B to B;

fig. 4 is a schematic structural diagram of a cannula of a central venous catheter according to the present invention.

In the figure: 1-puncture needle, 2-sleeve, 201-first anticoagulation layer, 202-first antibacterial layer, 203-second antibacterial layer, 204-second anticoagulation layer, 205-metal wire, 206-base material layer, 3-terylene sleeve, 4-fixing rod, 5-mounting tube, 6-wire drawing, 7-needle seat, 8-rubber plug, 9-fixing head and 10-rotating wheel.

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. 1-4, central venous catheter, including needle file 7, the fixed sleeve pipe 2 that is provided with and communicates with the needle file 7 inner chamber of needle file 7 one end, sleeve pipe 2 includes substrate layer 206, the substrate layer 206 is embedded to have spiral shape wire 205, the both ends of substrate layer 206 have coated first antibiotic layer 202 and second antibiotic layer 203 respectively, first antibiotic layer 202 is kept away from one side coating of substrate layer 206 has first anticoagulation layer 201, the antibiotic layer 203 of second is kept away from one side coating of substrate layer 206 has the anticoagulation layer 204 of second.

The first anticoagulation layer 201 and the second anticoagulation layer 204 have the same structure, the first antibacterial layer 202 and the second antibacterial layer 203 have the same structure, and the substrate layer 206 is made of flexible material, and the specific material can be polyurethane or the like. The material of the anticoagulation layer is selected from N-vinyl pyrrolidone polymer, and in addition, an anticoagulant can be added into the polymer to further improve the anticoagulation effect and the smoothness of the material. As for the antibacterial layer material, the main active ingredients are chitosan, nano silver and the like, and the existing antibacterial agent can be added for compounding. The antibacterial layer and the anticoagulant layer are both fixed on both sides of the substrate layer 206 by coating.

The utility model provides a substrate layer 206 is embedded to have spiral wire 205, has avoided sleeve pipe 2 to appear the problem of jam because of buckling, and the both sides of substrate layer 206 have all coated antibiotic layer and anti-freezing layer, and the anti-freezing layer has guaranteed sleeve pipe 2's smoothness, reduces the problem that sleeve pipe 2 blockked up, and antibiotic layer then has fine antibacterial effect to reduce the risk that central venous catheter used to cause the complication.

In order to further improve the antibacterial effect of the central venous catheter, the outer side of the sleeve 2 is also sleeved with a terylene sleeve 3, the inner side and the outer side of the terylene sleeve 3 are coated with a third antibacterial layer, and the third antibacterial layer has the same composition with the first antibacterial layer 202 and the second antibacterial layer 203.

In particular, the length of the cannula 2 is 6-12 cm.

In addition, the inner cavity of the needle seat 7 is also fixedly provided with a rubber plug 8 and further comprises a puncture needle 1, and the puncture needle 1 sequentially penetrates through the rubber plug 8 and the sleeve 2 and is in sliding connection with the rubber plug 8 and the sleeve 2.

In order to avoid pjncture needle 1 to cause the injury to medical personnel, still including installation pipe 5, installation pipe 5 with needle file 7 is kept away from the connection can be dismantled to the one end of

sleeve pipe

2, 1 one end of pjncture needle is pegged graft in the installation pipe 5 and with installation pipe 5 sliding connection, still include in the installation pipe 5 with 1 fixed connection's of pjncture needle wire 6, wire 6 is kept away from the one end of pjncture needle 1 with installation pipe 5 is kept away from the runner 10 fixed connection of the one end of needle file 7, the inner chamber of installation pipe 5 has still pegged graft dead lever 4 for fixing pjncture needle 1, installation pipe 5 is kept away from the one end of needle file 7 still detachably is equipped with fixed head 9, is used for fixing dead lever 4.

The 6 accessible runners 10 of wire drawing in the installation pipe 5 rotate and pack up it to in installing pipe 5 with pjncture needle 1 income, it causes the injury to medical personnel to avoid pjncture needle 1 in the follow-up processing, the effect of dead lever 4 supports pjncture needle 1, avoid going back to the problem in the sleeve pipe 2 in puncture in-process pjncture needle 1 appears, when needs are with pjncture needle 1 income installation pipe 5, break away from fixed head 9 and installation pipe 5 and can rotate runner 10 and come in the installation pipe 5 with pjncture needle 1 income.

In order to facilitate the shrinkage of the drawn wire 6, the rotating wheel 10 is located on the side wall of the installation pipe 5, and the rotating wheel 10 protrudes out of the side wall of the installation pipe 5.

The distance from the rotating wheel 10 to the bottom of the inner cavity of the installation tube 5 is not less than the length of the puncture needle 1, so that the puncture needle 1 can be completely retracted into the installation tube 5.

In addition, the installation pipe 5 can be designed to be telescopic, a positioning structure similar to a trunk pull rod needs to be arranged on the installation pipe 5 at the moment, and the space occupied by the installation pipe 5 can be reduced.

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. A central venous catheter, characterized by: including the needle file, the fixed sleeve pipe that is provided with the needle file inner chamber intercommunication of needle file one end, the sleeve pipe includes the substrate layer, the substrate layer is embedded to have the helical shape wire, the both ends of substrate layer have coated respectively that first antibiotic layer and second are antibiotic, first antibiotic layer is kept away from one side coating of substrate layer has first anticoagulation layer, the antibiotic layer of second is kept away from one side coating of substrate layer has the second to resist and congeals the layer.

2. The central venous catheter of claim 1, wherein: the outer side of the sleeve is also sleeved with a polyester sleeve, and the inner side and the outer side of the polyester sleeve are coated with a third antibacterial layer.

3. The central venous catheter of claim 1, wherein: the length of the sleeve is 6-12 cm.

4. The central venous catheter of claim 1, wherein: the needle seat is characterized in that a rubber plug and a puncture needle are further fixedly arranged in the inner cavity of the needle seat, and the puncture needle sequentially penetrates through the rubber plug and the sleeve and is in sliding connection with the rubber plug and the sleeve.

5. The central venous catheter of claim 4, wherein: still include the installation pipe, the installation pipe with the needle file is kept away from the sheathed tube one end can be dismantled the connection, pjncture needle one end is pegged graft in the installation pipe and with installation pipe sliding connection, still include in the installation pipe with pjncture needle fixed connection's wire drawing, the wire drawing is kept away from the one end of pjncture needle with the installation pipe is kept away from the runner fixed connection of the one end of needle file, the inner chamber of installation pipe is still pegged graft there is the dead lever for fixing the pjncture needle, the installation pipe is kept away from the one end of needle file still detachably is equipped with the fixed head, is used for fixing the dead lever.

6. The central venous catheter of claim 5, wherein: the rotating wheel is located on the side wall of the installation pipe and protrudes out of the side wall of the installation pipe.

7. The central venous catheter of claim 5, wherein: the distance from the rotating wheel to the bottom of the inner cavity of the installation tube is not less than the length of the puncture needle, so that the puncture needle can be completely retracted into the installation tube.

8. A central venous catheter as claimed in any of claims 5 to 7 wherein: the installation pipe is telescopic.