CN201676395U - A kind of detachment-proof central venous catheter - Google Patents

Abstract

The utility model discloses a detachment-proof central venous catheter, which comprises a catheter connector, an extension tube with one end connected to the catheter connector, a liquid-stopping clamp sleeved on the extension tube, a connecting seat and a tube body. The other end of the epitaxial tube is connected to the pipe body through the connection seat, and there is at least one groove or hole on the surface of the pipe body placed inside the connection seat, and the connection seat is provided at a position corresponding to the groove or hole. There are protrusions, so that the connecting seat is snap-connected with the pipe body. Therefore, even if the tube body is left in the human body for a long time to be soaked in medicine or subjected to temperature changes for a long time, resulting in a gap between the tube body and the connecting seat and loosening, the tube body will not fall off from the connecting seat, thereby preventing the tube body from entering Blood vessels cause serious medical accidents; at the same time, the grooves or holes on the surface of the tube body placed inside the connection seat are misplaced, and the diameter of the hole is 30%-50% of the outer diameter of the tube, which can enhance the stability of the connection seat and the tube body To prevent the tube from breaking.

Description

A kind of detachment-proof central venous catheter

technical field

The utility model belongs to the auxiliary medical equipment in the field of diagnosis and treatment, in particular to an anti-off central venous catheter.

Background technique

At present, the central venous catheter is connected with the epitaxial tube and the tube body in the form of a connecting seat by using TPU injection molding by insert injection molding. That is, both the epitaxial tube and one end of the tube body are included in the connecting seat.

The central venous catheter connected in the above way has the following disadvantages in actual application: since the tube body and the connecting seat are not a whole, and no anti-falling measures are taken for the cooperation between them, the tube body is left in the human body for a long time to soak Drugs, long-term exposure to temperature changes and other factors will cause a gap between the tube body and the connecting seat to loosen, causing the tube body to fall off and even enter the blood vessel, causing serious medical accidents.

Utility model content

The technical problem to be solved by the utility model is: to overcome the defect that the tube body of the existing central venous catheter is easy to fall off, and to provide a central venous catheter in which the tube body and the connecting seat will not be separated from each other.

In order to solve the above-mentioned technical problems, the technical solution of the present utility model is to provide a detachment-proof central venous catheter, which includes a catheter joint, an extension tube with one end connected to the catheter joint, and a liquid stop sleeve sleeved on the extension tube. clamp, connecting seat and pipe body, the other end of the extension tube and the pipe body are connected through the connecting seat, there is at least one groove or hole on the surface of the pipe body placed inside the connecting seat, and the connecting seat A protrusion is provided at the position corresponding to the groove or the hole, so that the connecting seat is buckled connected with the pipe body.

Further, the grooves or holes arranged on the surface of the pipe body inside the connecting seat are distributed in a misaligned manner.

Furthermore, the diameter of the hole on the surface of the tube body arranged inside the connecting seat is 30%-50% of the outer diameter of the tube.

Furthermore, the front end of the pipe body is rounded and conical.

Preferably, the tapered front end of the tube body is made of medical grade silicone or medical polyurethane material.

Compared with the existing technology, the detachment-proof central venous catheter provided by the utility model adopts the buckle connection structure of the connecting seat and the tube body, even if the tube body is soaked in medicine for a long time in the human body or subjected to temperature changes for a long time As a result, there is a gap between the connecting seat and the loosening phenomenon, and the tube body will not break away from the connecting seat, thereby preventing the tube body from entering the blood vessel and causing serious medical accidents.

Description of drawings

Fig. 1 is a structural diagram of the anti-off type central venous catheter provided by the embodiment of the present invention;

Fig. 2 is the structural diagram of the pipe body provided by the utility model embodiment;

Fig. 3 is an enlarged view of the connection between the connecting seat and the pipe body provided by the embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1, the embodiment of the utility model provides an anti-off central venous catheter, including a catheter connector 1, an extension tube 2 connected to the catheter connector at one end, a liquid stop clip 3 sleeved on the extension tube, and a connecting seat 4 and the tube body 5, the other end of the extension tube 2 and the tube body 5 are connected through the connection seat 4, there are two holes 51 on the surface of the tube body 5 placed inside the connection seat 4, and the connection seat 4 is at the corresponding position of the hole 51 A bump is provided to make the connecting seat 4 and the pipe body 5 buckle-connected. Compared with the existing technology, the anti-off type central venous catheter provided by the utility model adopts the buckle connection structure between the connecting seat 4 and the tube body 5, even if the tube body 5 is left in the human body for a long time for soaking medicine or for a long time Due to the temperature change, there is a gap between the connecting seat 4 and the loosening phenomenon, and the tube body 5 will not be separated from the connecting seat 4, so as to prevent the tube body 5 from entering the blood vessel and causing serious medical accidents.

Further, as shown in FIG. 2 , the two holes 51 arranged on the surface of the pipe body 5 inside the connecting seat 4 are misaligned, which can prevent the pipe body 5 from easily breaking at the holes 51 and at the same time balance the pipe body 5 Stress, enhance the stability of the pipe body 5 and the connecting seat 4.

Furthermore, the diameter of the hole 51 on the surface of the pipe body 5 inside the connecting seat 4 is 30%-50% of the outer diameter of the pipe body 5, and the diameter of the hole is not too large, so as to avoid the occurrence of The phenomenon that the pipe body 5 is broken.

Furthermore, the front end 52 of the tube body 5 is tapered, and the top is rounded so that the operator can insert it without damaging the blood vessel. It can be made of medical grade silicone material or medical polyurethane material. Methods The tube body 5 of the central venous catheter is implanted into the patient's venous blood vessel, and the tube body 5 can be left in the blood vessel for a long time to infuse the drug solution. The medical grade silicone material and medical polyurethane material are hydrophilic, which can reduce the size of the tube. The resistance of the body 5 sliding in the blood vessel reduces the tension between the connecting seat 4 and the tube body 5 .

In this embodiment, the hole 51 is arranged on the surface of the tube body 5 inside the connecting seat 4, and of course it can also be a groove. As long as a central venous catheter is used, the tube body 5 placed inside the connecting seat 4 has at least A groove or a hole, and the connecting seat 4 is provided with a bump at the corresponding position of the groove or the hole, so that the connecting seat 4 and the pipe body 5 are snap-connected, all falling within the scope of protection of the present invention.

In this embodiment, the central venous catheter is single-lumen, and of course it can also be a multi-lumen central venous catheter. As long as a central venous catheter is used, there is at least one groove or hole on the surface of the tube body 5 placed inside the connecting seat 4, The connecting seat 4 is provided with a bump at the corresponding position of the groove or the hole, so that the connecting seat 4 and the pipe body 5 are buckled and connected, all of which fall within the scope of protection of the present invention.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (5)

1. run-resistant central venous catheter, comprise extension pipe that catheter adapter, an end be connected with described catheter adapter, be sheathed on liquid stopping clamp, Connection Block and body on the described extension pipe, the described extension pipe other end is connected by described Connection Block with described body, it is characterized in that: placing on the body surface of described Connection Block inside has at least one groove or hole, described Connection Block is provided with projection in described groove or hole correspondence position, and described Connection Block is connected with described body buckle.

2. a kind of run-resistant central venous catheter as claimed in claim 1 is characterized in that: the lip-deep groove of body or the hole that are arranged at described Connection Block inside are dislocatedly distributed.

3. a kind of run-resistant central venous catheter as claimed in claim 2 is characterized in that: the diameter that is arranged at hole on the body surface of described Connection Block inside is the 30%-50% of body overall diameter.

4. as each described a kind of run-resistant central venous catheter of claim 1 to 3, it is characterized in that: described body front end is the taper of rounding.

5. a kind of run-resistant central venous catheter as claimed in claim 4 is characterized in that: described body tapered front end adopts medical grade silicone or medical polyurethane material to make.

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