CN213589471U

CN213589471U - Inferior vena cava switches on device

Info

Publication number: CN213589471U
Application number: CN202020531267.4U
Authority: CN
Inventors: 成德雷; 吕维富; 周春泽
Original assignee: Anhui Provincial Hospital First Affiliated Hospital of USTC
Current assignee: Anhui Provincial Hospital First Affiliated Hospital of USTC
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2021-07-02
Anticipated expiration: 2030-04-10

Abstract

The utility model belongs to the technical field of medical instrument, especially, inferior vena cava switches on device. The utility model discloses a following component parts of mutually supporting: a hollow conduit; the solid steel needle is movably arranged in the catheter in a penetrating mode, and the length of the steel needle is larger than that of the catheter. The utility model can initially conduct the inferior vena cava by penetrating the steel needle into the catheter and using the round and blunt needle head part of the steel needle, thereby slowing down the blockage of the inferior vena cava and facilitating the subsequent use of guide wires to dredge the veins; and because the steel needle has certain hardness, the steel needle is not easy to deform and is easy to dredge the blockage.

Description

Inferior vena cava switches on device

Technical Field

The utility model belongs to the field of medical equipment, especially, relate to a inferior vena cava switches on device.

Background

Bulgar syndrome refers to a series of clinical manifestations of the obstruction between the inferior vena cava backflow, due to partial or complete occlusion of the inferior vena cava by adjacent lesions, compression, or endoluminal thrombosis. At present, the treatment modes of the Bujia syndrome comprise internal medicine, surgery, interventional therapy and the like, wherein the trauma is small, the effect is good, and therefore the interventional therapy is the first choice for the Bujia syndrome treatment.

In the existing interventional therapy, a special tool for conducting the inferior vena cava is not provided, generally, a guide wire is inserted into a catheter to conduct the inferior vena cava, but the guide wire is soft, so that the conducting effect is poor, and certain influence is caused on subsequent treatment.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides an inferior vena cava conduction device. The utility model discloses can slow down the jam condition of inferior vena cava, the follow-up seal wire of using of being convenient for mediation vein.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an inferior vena cava conduction device, comprising the following components in cooperation with one another:

a hollow conduit;

the solid steel needle is movably arranged in the catheter in a penetrating mode, and the length of the steel needle is larger than that of the catheter.

Preferably, one end of the steel needle close to the needle head is provided with a curved extension part, and the extension part extends out of the catheter.

Preferably, the bending angle α of the extension is 10 ° to 30 °.

Preferably, the length of the extension is 2 cm.

Preferably, the length of the catheter is 60 cm.

Preferably, one end of the steel needle, which is far away from the needle head and extends out of the outer side of the catheter, is fixedly connected with the handle head, the handle head is provided with a rotation indicating part, and the rotation indicating part is matched with the bending direction of the extension part.

Preferably, the rotation indicating part is a protrusion corresponding to a bending direction of the extension part.

Preferably, one end of the catheter far away from the needle head is fixedly connected with the tube head, and the tube head is provided with a channel capable of accommodating the steel needle to pass through.

Preferably, the needle head of the steel needle is round blunt.

The utility model has the advantages that:

(1) the utility model can initially conduct the inferior vena cava by penetrating the steel needle into the catheter and using the round and blunt needle head part of the steel needle, thereby slowing down the blockage of the inferior vena cava and facilitating the subsequent use of guide wires to dredge the veins; and because the steel needle has certain hardness, the steel needle is not easy to deform and is easy to dredge the blockage.

(2) The utility model discloses the extension that sets up is unanimous with the crooked direction of patient's vein, and the steel needle of being convenient for inserts and switches on the inferior vena cava, and is equipped with the rotation instruction portion to the head, judges the crooked direction of extension when the medical personnel of being convenient for operate, has further improved the convenience of device.

(3) The utility model discloses establish the syringe needle of steel needle into round blunt form, be difficult for stabbing the inferior vena cava inner wall, guaranteed the security that the steel needle used.

Drawings

Fig. 1 is a schematic view of the cross-sectional structure of the present invention.

Fig. 2 is an enlarged schematic view of the extension portion of the present invention.

Fig. 3 is a schematic view of the overall structure of the present invention.

Fig. 4 is a schematic view of the catheter structure of the present invention.

Fig. 5 is a schematic view of the structure of the steel needle of the present invention.

The notations in the figures have the following meanings:

1-catheter, 2-steel needle, 21-extension part, 3-tube head, 4-handle head and 41-rotation indication part.

Detailed Description

As shown in fig. 4 and 5, the inferior vena cava conduction device comprises a hollow catheter 1 and a solid steel needle 2; as shown in figures 1 and 3, in the device, a steel needle 2 is movably arranged in a catheter 1, and the length of the steel needle 2 is greater than that of the catheter 1; as shown in figure 2, one end of the steel needle 2 close to the needle head is provided with a curved extension part 21, and the extension part 21 extends out of the outer side of the catheter 1, so that the steel needle 2 can be inserted into and can conduct the inferior vena cava.

As shown in figure 2, the bending angle alpha of the extension part 21 is 10-30 degrees, and the bending angle alpha is specifically the included angle between the extension part 21 and the axial direction of the steel needle 2 body, which is consistent with the bending direction of the human vein, and is more beneficial to protecting the vein of a patient. The length of the extension part 21 is 2cm, which is convenient for the extension part 21 to extend out of the catheter 1 for conduction of the inferior vena cava and also avoids the overlong insertion of the extension part 21 into the inferior vena cava; the length of the catheter 1 is 60cm, which facilitates the insertion of the catheter 1 into the body to reach the blockage of the inferior vena cava.

As shown in fig. 5, one end of the steel needle 2, which is far away from the needle head and extends out of the catheter 1, is fixedly connected with the handle head 4, the handle head 4 is provided with a rotation indicating part 41, and the rotation indicating part 41 can be a protrusion which is consistent with the bending direction of the extension part 21, so that the medical staff can easily judge the bending direction of the extension part during operation; because the handle head 4 is larger than the steel needle 2, the medical staff can control the steel needle 2 through the handle head 4 when operating.

As shown in fig. 4, one end of the catheter 1 far from the needle head is fixedly connected with the tube head 3, the tube head 3 is provided with a channel which can accommodate the steel needle 2 to pass through, and the tube head 3 is larger than the catheter 1, so that the catheter 1 is controlled by the tube head 3 when the medical staff operates conveniently, and the steel needle 2 can be positioned when the catheter is not used. The needle head of the steel needle 2 is in a round blunt shape, so that the inner wall of the inferior vena cava is not easy to puncture.

The operation of the device is described in detail below with reference to the drawings in the examples.

Insert the inferior vena cava of patient with the part that pipe 1 kept away from tube head 3 earlier, insert pipe 1 with the one end that steel needle 2 was equipped with the syringe needle from tube head 3 again, combine the image to judge the position of extension 21, when extension 21 stretches out pipe 1 and arrives the jam department of inferior vena cava, through pinching head 4 control steel needle 2 and switch on, can take out steel needle 2 after preliminary mediation, follow-up reuse seal wire inserts pipe 1 through tube head 3 and carries out further switch on.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. An inferior vena cava conduction device, comprising: the device comprises the following components which are matched with each other:

a hollow conduit (1);

the solid steel needle (2), the steel needle (2) activity is worn to locate in pipe (1), the length of steel needle (2) is greater than the length of pipe (1).

2. An inferior vena cava conduction device according to claim 1, wherein: one end of the steel needle (2) close to the needle head is provided with a bent extension part (21), and the extension part (21) extends out of the outer side of the catheter (1).

3. An inferior vena cava conduction device according to claim 2, wherein: the bending angle alpha of the extension part (21) is 10-30 degrees.

4. An inferior vena cava conduction device according to claim 2 or 3, wherein: the length of the extension part (21) is 2 cm.

5. An inferior vena cava conduction device according to claim 1, wherein: the length of the conduit (1) is 60 cm.

6. An inferior vena cava conduction device according to claim 2, wherein: the steel needle (2) is far away from the needle head and extends out of one end of the outer side of the catheter (1) to be fixedly connected with the handle head (4), a rotation indicating part (41) is arranged on the handle head (4), and the rotation indicating part (41) is matched with the bending direction of the extension part (21).

7. An inferior vena cava conduction device according to claim 6, wherein: the rotation indicating part (41) is a protrusion which is consistent with the bending direction of the extension part (21).

8. An inferior vena cava conduction device according to claim 1, wherein: one end of the catheter (1) far away from the needle head is fixedly connected with the tube head (3), and a channel capable of accommodating the steel needle (2) is arranged on the tube head (3).

9. An inferior vena cava conduction device according to claim 1, wherein: the needle head of the steel needle (2) is round and blunt.