CN211214876U

CN211214876U - Central vein external member based on fixed pulley

Info

Publication number: CN211214876U
Application number: CN201921941788.0U
Authority: CN
Inventors: 谢阳; 孙青�; 谢依彤; 叶燕卿; 姜文强
Original assignee: Suzhou Municipal Hospital
Current assignee: Suzhou Municipal Hospital
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-08-11
Anticipated expiration: 2029-11-12

Abstract

The utility model discloses a central vein external member based on fixed pulley, including the pipe body, J type head iron wire, connecting band and pjncture needle, J type head iron wire alternates inside the pipe body, exposed part's J type head iron wire and pipe body lower extreme are connected to the connecting band, make central vein pipe wholly be the loop configuration, one side that is close to J type head iron wire on the connecting band is seted up flutedly, fixed mounting has the fixed pulley in the recess, J type head iron wire clamp is in the fixed pulley, the fixed pulley edge is the cusp, the J type head of J type head iron wire gets into the pjncture needle core from pjncture needle afterbody circular conical hole. Through the matching design of the fixed pulleys and the connecting belt, the J-shaped head iron wire is convenient to exert force when moving in the catheter body, and the J-shaped head iron wire can be inserted into the catheter body more quickly and more conveniently; meanwhile, by combining the design of the conical hole at the tail part of the puncture needle, the J-shaped head part of the J-shaped head iron wire can better enter the needle core of the puncture needle.

Description

Central vein external member based on fixed pulley

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to central vein external member based on fixed pulley.

Background

The critical patients often need a large amount of transfusion, blood transfusion and the use of pressure-boosting drugs or the infusion of hypertonic drugs, irritability drugs and other drugs, and the vein channel is opened as soon as possible, which is the key for improving the success rate of rescue. The placement of the central venous catheter is an effective method for quickly opening a venous channel, and is an effective method for ensuring long-term transfusion, blood transfusion, nutrition support, monitoring of central venous pressure, auxiliary liquid management and other treatments. Successful puncture of the central vein is critical for indwelling central venous catheters. The puncture needle and the steel wire ring sleeve in the current domestic central venipuncture bag have the following problems: the steel wire out of the steel wire loop is not easy to push out, and the phenomenon that a finger slips on the steel wire frequently occurs, so that the steel wire is not moved in the loop, and the success rate of central venipuncture is directly influenced; because the tail part of the puncture needle presents a flat small round hole, the J-shaped head part of the steel wire is not easy to enter the needle core, and the puncture failure is directly caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide a central vein external member based on fixed pulley.

In order to realize the technical purpose, the utility model discloses the technical scheme who takes does:

a fixed pulley-based central vein kit, wherein: including pipe body, J type head iron wire, connecting band and pjncture needle, J type head iron wire alternates inside the pipe body, and exposed J type head iron wire and the pipe body lower extreme of part are connected to the connecting band, make the whole annular structure that is of central venous catheter, one side that is close to J type head iron wire on the connecting band is seted up flutedly, fixed mounting has the fixed pulley in the recess, J type head iron wire card clamp is in the fixed pulley, the fixed pulley edge is the cusp, the J type head of J type head iron wire gets into pjncture needle core from pjncture needle afterbody circular conical hole.

In order to optimize the technical scheme, the specific measures adopted further comprise:

and a connecting shaft is inserted in the middle of the fixed pulley, and two ends of the connecting shaft are fixed in the grooves.

The gap between the fixed pulleys is the same as the diameter of the J-shaped head iron wire.

The height of the fixed pulley is 1-2mm larger than the distance between the J-shaped head iron wire and the connecting belt.

The catheter body is made of plastic.

The J-shaped head iron wire is wrapped by a section of pipe body which is not arranged at the end close to the J-shaped head, and two ends of the connecting belt are respectively fixedly connected with the pipe bodies at two ends.

The fixed pulley is made of plastic.

The conical hole is large outside and small inside.

The utility model has the advantages that:

the central vein suite based on the fixed pulley of the utility model is convenient for force application when the J-shaped head iron wire moves in the catheter body through the matching design of the fixed pulley and the connecting belt, so that the J-shaped head iron wire can be more quickly and more laborsavingly inserted in the catheter body; meanwhile, by combining the design of the conical hole at the tail part of the puncture needle, the J-shaped head part of the J-shaped head iron wire can better enter the needle core of the puncture needle.

Drawings

Fig. 1 is a schematic view of a catheter of the present invention;

fig. 2 is a partial cross-sectional view of a catheter of the present invention;

fig. 3 is a partial sectional view of the puncture needle of the present invention.

The reference signs are: the catheter comprises a catheter body 1, a J-shaped head iron wire 2, a connecting belt 3, a puncture needle 4, a fixed pulley 5 and a conical hole 6.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the utility model relates to a central vein external member based on fixed pulley, wherein: including pipe body 1, J type head iron wire 2, connecting band 3 and pjncture needle 4, J type head iron wire 2 alternates inside pipe body 1, and connecting band 3 connects J type head iron wire 2 and the 1 lower extreme of pipe body of exposed part, makes central venous catheter wholly be the loop configuration, one side that is close to J type head iron wire 2 on the connecting band 3 is seted up flutedly, fixed mounting has fixed pulley 5 in the recess, J type head iron wire 2 card clamp is in fixed pulley 5, 5 edges of fixed pulley are the cusp, the J type head of J type head iron wire 2 gets into pjncture needle stylet from 4 afterbody circular conical holes 6 entering pjncture needles of pjncture needle

In the embodiment, a connecting shaft is inserted in the middle of the fixed pulley 5, and two ends of the connecting shaft are fixed in the grooves.

In the embodiment, the gap in the middle of the crown block 5 is the same as the diameter of the J-head wire 2.

In the embodiment, the height of the fixed pulley 5 is 1-2mm larger than the distance between the J-shaped head iron wire 2 and the front part of the connecting belt 3.

In the embodiment, the material of the catheter body 1 is plastic.

In the embodiment, a section of the J-shaped head iron wire 2 close to the J-shaped head end is wrapped without the catheter body 1, and two ends of the connecting band 3 are respectively fixedly connected with the catheter bodies 1 at two ends.

In the embodiment, the fixed pulley 5 is made of plastic.

In the embodiment, the conical hole 6 is large at the outside and small at the inside.

The utility model discloses a use method as follows:

penetrate 2 tail ends of J type head iron wire from the one side that is close to fixed pulley 5 earlier, then press from both sides 2 clamps of J type head iron wire in fixed pulley 5, then press and rotate fixed pulley 5, J type head iron wire 2 can be fast laborsaving under the drive of fixed pulley 5 alternate into pipe body 1 with J type head iron wire 2 inside, penetrate 4 needle cores of pjncture needle from the circular cone hole 6 of 4 afterbody of pjncture needle with J type head iron wire 2 simultaneously.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.

Claims

1. A central vein external member based on fixed pulley which characterized in that: including pipe body (1), J type head iron wire (2), connecting band (3) and pjncture needle (4), J type head iron wire (2) alternate inside pipe body (1), and exposed part's J type head iron wire (2) and pipe body (1) lower extreme are connected in connecting band (3), make central venous duct wholly be the loop configuration, one side that is close to J type head iron wire (2) on connecting band (3) is seted up flutedly, fixed mounting has fixed pulley (5) in the recess, J type head iron wire (2) card clamp is in fixed pulley (5), fixed pulley (5) edge is the cusp, the J type head of J type head iron wire (2) gets into pjncture needle core from pjncture needle (4) afterbody circular cone hole (6).

2. The fixed pulley-based central vein kit according to claim 1, wherein: and a connecting shaft is inserted in the middle of the fixed pulley (5), and two ends of the connecting shaft are fixed in the grooves.

3. The fixed pulley-based central vein kit according to claim 1, wherein: the gap in the middle of the fixed pulley (5) is the same as the diameter of the J-shaped head iron wire (2).

4. The fixed pulley-based central vein kit according to claim 1, wherein: the height of the fixed pulley (5) is 1-2mm greater than the distance between the J-shaped head iron wire (2) and the connecting belt (3).

5. The fixed pulley-based central vein kit according to claim 1, wherein: the catheter body (1) is made of plastic.

6. The fixed pulley-based central vein kit according to claim 1, wherein: j type head iron wire (2) are close to J type head end and have a section not have the parcel of pipe body (1), pipe body (1) at connecting band (3) both ends difference fixed connection both ends.

7. The fixed pulley-based central vein kit according to claim 1, wherein: the fixed pulley (5) is made of plastic.

8. The fixed pulley-based central vein kit according to claim 1, wherein: the conical hole (6) is large outside and small inside.