CN201115742Y - Tunneled Needle for Permanent Single Needle Dual Lumen Catheterization of the Internal Jugular Vein - Google Patents

Abstract

The utility model discloses a tunnel needle used for installing a vein permanent single needle double cavity conduit in neck, the structure thereof comprises a needle head (1) and a hollow needle tube (2), wherein, the tail end of the needle head (1) is a connecting end (3) with an outside thread (4), the hollow needle tube (2) is provided with an inside thread (5), and the needle head (1) is movably connected to the hollow needle tube (2) through the connecting end (3). When a blood purifying passageway is established by using the tunnel needle, only an opening with the size which is less than 0.5cm is arranged at the top end of a sternocleidomastoid included angle at one side and the far end of a collarbone at the same side, then the tunnel needle passes through the opening to guide, that is ok. Compared with the prior art, the tunnel needle has the characteristics of simple and convenient operation, time and labor conservation, less haemorrhage and little pain for patients, etc.

Description

Tunneled Needle for Permanent Single Needle Dual Lumen Catheterization of the Internal Jugular Vein

technical field

The utility model relates to a medical device, in particular to a tunnel needle for placing a permanent single-needle double-cavity catheter of the internal jugular vein.

Background technique

Among the methods of establishing blood purification pathways, the permanent internal jugular vein (left or right) is more commonly used to establish a blood circuit by intubation, and the permanent single-needle double-lumen catheter inserted into the internal jugular vein is widely used for blood channels. The internal jugular vein permanent single-needle double-lumen catheter is an existing device. It is a set of puncture techniques that are inserted into the internal jugular vein (left or right) at the top of the sternocleidomastoid angle on one side, and then from the ipsilateral clavicle. An opening is made in front of the distal end, an arc-shaped tunnel is formed between the two puncture points, and then a permanent single-needle double-lumen catheter is placed in the internal jugular vein to obtain blood from the internal jugular vein. However, in the process of puncturing, it is cumbersome to establish a tunnel passage. In the process of establishing this arc-shaped tunnel, intermittent local anesthesia is usually used, and then the tunnel is opened and expanded with large curved forceps. Because the length of the large curved forceps is not enough, it is usually necessary to expand the two sides in opposite directions, which is easy to misplace, just like playing a train tunnel, and if the fascia in the middle is not fully expanded, the permanent single-needle double-lumen catheter for the internal jugular vein will be fine. Can't put it in. Moreover, in the process of expansion, it is easy to form a funnel shape with a sharp front and a wide back, which causes the patient to bleed more and suffer a lot. In the process of using large curved forceps to expand, it takes a lot of effort, and the arc angle is often not satisfactory, which will affect the blood flow of subsequent hemodialysis.

Utility model content

The problem to be solved by the utility model is to provide a tunnel needle for placing a permanent single-needle double-lumen catheter in the internal jugular vein. The use of the tunnel needle can reduce the amount of bleeding of the patient, alleviate the pain of the patient, and is convenient to operate.

In order to solve the above-mentioned technical problems, the tunnel needle used for placing the permanent single-needle double-lumen catheter of the internal jugular vein of the utility model is constituted as follows: it includes a needle head 1 and a hollow needle tube 2, and the tail end of the needle head 1 is a connection with an external thread 4 The end 3 is provided with an internal thread 5 at the front end of the hollow needle tube 2, and the needle head 1 is movably connected to the hollow needle tube 2 through the connection end 3.

In the aforementioned tunnel needle for placing a permanent single-needle double-lumen catheter in the internal jugular vein, the outer diameter Φ of the needle 1 and the hollow needle tube 2 is between 3 and 5 mm. The wound is small like this, can reduce the amount of bleeding of the patient, and alleviate the pain of the patient.

In the foregoing tunnel needle for placing a permanent single-needle double-lumen catheter for the internal jugular vein, the hollow needle tube 2 is arc-shaped. This facilitates piercing and handling.

When using this product, follow the steps below:

1. First remove the patient’s position from the pillow to the supine position, put the pillow on the shoulder and back of the puncture side, and then carry out routine disinfection, ranging from the front of the neck to the ear and then to the front chest, the outside to the acromion and upper arm, and carefully disinfect three times , shop towel with neck surgery.

2. Take the top of the sternocleidomastoid muscle angle on one side as the puncture point, and use 2% lidocaine for local infiltration anesthesia. After it takes effect, take the puncture needle in the internal jugular vein permanent single-needle double-lumen catheter device to extract 1% heparin. The internal jugular vein was punctured, and the guide wire was inserted after the blood was withdrawn, and it was placed aside for protection.

3. Use intermittent 2% lidocaine to locally infiltrate the arc-shaped tunnel for local anesthesia. After it takes effect, open an incision about 0.5 cm in size at the far end to subcutaneous, and open a puncture point about 0.5 cm in size at the top of the sternocleidomastoid angle. 0.5cm incision to subcutaneous.

4. Enter the tunnel needle subcutaneously from the distal port, advance along the arc-shaped tunnel until the puncture point at the top of the sternocleidomastoid angle comes out, rotate the needle at the top of the hollow needle tube, and remove the needle;

5. Feed the steel wire in the internal jugular vein permanent single-needle double-lumen catheter along the hollow needle tube of the tunnel needle from the distal end until it passes through the proximal end; then pull out the tunnel needle, keep the steel wire, and connect the distal end of the steel wire to the permanent internal jugular vein Pull the steel wire at the proximal end of the single-needle double-lumen catheter until the permanent single-needle double-lumen catheter of the internal jugular vein exits from the puncture point at the top of the sternocleidomastoid angle, keeping an appropriate length.

6. Send the expansion sheath along the guide wire in turn to expand, insert the avulsion sheath, tear off the avulsion sheath, insert a permanent single needle and double lumen, check the blood flow of the catheter, and finally seal, suture, fix, and cover with sterile gauze , ask the upper limb on the puncture side to be fixed.

Compared with the prior art, the utility model only needs to open an opening less than 0.5cm in front of the top of the angle between the sternocleidomastoid muscle on one side and the distal end of the clavicle on the same side, and then pass the tunnel needle through to guide it. Can. It is easier to indwell a permanent single-needle double-lumen catheter in the internal jugular vein, and the operation is simple and convenient, saving time and labor, and the patient has less bleeding and less pain.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the structural representation of the needle head of the present utility model;

Fig. 3 is an enlarged view of part A of Fig. 1 .

Detailed ways

Embodiment of the present utility model: as shown in accompanying drawing 1, comprise needle head 1 and arc-shaped hollow needle tube 2, the tail end of needle head 1 is a connecting end 3 with external thread 4, and the inner wall of hollow needle tube 2 has internal thread 5. The needle head 1 is movably connected to the hollow needle tube 2 through its connecting end 3; the outer diameter Φ of the needle head 1 and the hollow needle tube 2 is generally 3-5mm, and in this example it is 5mm.

Claims (3)

1. tunnel guide that is used to settle the permanent single needle double channel catheter of internal jugular vein, comprise syringe needle (1), hollow needle tubing (2), it is characterized in that: the tail end of syringe needle (1) is the link (3) of band external screw thread (4), front end at hollow needle tubing (2) has female thread (5), and syringe needle (1) is movably connected on the hollow needle tubing (2) by link (3).

2. the tunnel guide that is used to settle the permanent single needle double channel catheter of internal jugular vein according to claim 1 is characterized in that: the external diameter Φ of syringe needle (1), hollow needle tubing (2) is 3～5mm.

3. the tunnel guide that is used to settle the permanent single needle double channel catheter of internal jugular vein according to claim 1 and 2 is characterized in that: hollow needle tubing (2) is an arc.

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