CN2832183Y

CN2832183Y - Ultrasonic guided brachial plexus block trocar

Info

Publication number: CN2832183Y
Application number: CN 200520077556
Authority: CN
Inventors: 徐旭仲
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-15
Filing date: 2005-11-15
Publication date: 2006-11-01
Anticipated expiration: 2015-11-15

Abstract

The utility model discloses a brachial plexus nerve retardarce trocar guided by ultrasound, which comprises a bodkin and a fine needle, the fine needle is actively inserted into the bodkin, the fine needle is longer than the bodkin, a needle tip of the bodkin is incline-shaped, a needle tip of the fine needle is prick-shaped, and a needle stem is provided with at least one needle hole on the point near the needle tip. The utility model has the advantages that in the process that the trocar carries out nerve retardarce under the guidance of the ultrasound, the bodkin is firstly inserted and the angle is adjusted, and then, the fine needle with scale lines is inserted, after injecting physic liquor at one point, the fine needle regresses to the bodkin, the angle of the bodkin is adjusted and aims to a new position, and the fine needle is again inserted in a new position and carries out a second point injection. And so on, the utility model carries out multipoint injection, and the success ratio reaches 99 percent. In addition, an incline of the bodkin is sharp, can easily penetrate the skin, subcutaneous tissues and dense nerve sheath, the bodkin is hard, and can easily alter the angle; the needle tip of the fine needle is prick-shaped, when inserted into the tissues, the needle tip of the fine needle takes the brace as main, the damage to the tissues is small, and patients can not feel strange.

Description

The brachial plexus nerve block trocar of ultrasonic guidance

Technical field

This utility model relates to a kind ofly imports the intravital medical apparatus and instruments of people with medium, relates in particular to a kind of brachial plexus nerve block trocar that is used for ultrasonic guidance.

Background technology

At present, used puncture needle is the inclined plane shape single needle when on the medical operating brachial plexus nerve being anaesthetized, the Anesthetist inserts the surrounding tissue of brachial plexus nerve by rule of thumb, reach the neural purpose of retardance after spreading by single-point injection, because single needle on position accuracy is low and the single-point liquid medicine injection can not spread the whole nerve tract of retardance, the success rate of carrying out full brachial plexus nerve block with traditional single needle only reaches about 70%, can not satisfy needs of medical treatment.In addition, the inclined-plane pin inserts when running into nerve, is to cut and organize, and is bigger to neural tissue injury, makes patient produce different sense easily.

Summary of the invention

Technical problem to be solved in the utility model overcomes the deficiencies in the prior art exactly, provides a kind of success rate height, to the brachial plexus nerve block trocar of the little ultrasonic guidance of neural tissue injury.

The technical scheme that this utility model adopted is: the brachial plexus nerve block trocar of ultrasonic guidance, constitute puncture needle by needle stand, pin stalk, needle point, comprise bodkin and fine needle, fine needle inserts in the bodkin versatilely, fine needle is longer than bodkin, the needle point of bodkin is an inclined plane shape, and the needle point of fine needle is the pin taper, and is provided with a pin hole at the pin stalk at least near the needle point place.

As further improvement, the pin of fine needle stalk is provided with graduation mark.

As further improvement, the head arc transition of the needle point of fine needle connects.

As further improvement, the outer trocar sheath that can insert the analgesia conduit that also is arranged with of the pin of bodkin stalk.

This utility model beneficial technical effects is: 1, the bodkin inclined-plane is sharp, is easy to transdermal, subcutaneous tissue and fine and close nerve sheath, and bodkin is harder, adjusts angle easily, the nerve tract that favourable aligning need block (target nerve).2, the needle point of fine needle is the pin taper, and the head arc transition (pencil like point) of needle point is inserted when organizing, and is to strut, and is less to tissue injury, and patient is difficult for producing different sense.3, the needle point side hole of fine needle can prevent neural interior injection, to avoid nerve injury.4, bodkin and fine needle are used the purpose that can reach multi-point injection in the brachial plexus nerve sheath.5, utilize trocar sheath can insert conduit, be used for the postoperative analgesia.

Description of drawings

Fig. 1: structural representation of the present utility model;

The local amplification view of Fig. 2: Fig. 1.

The specific embodiment

Below in conjunction with drawings and Examples this utility model is further described:

As shown in the figure, the brachial plexus nerve block trocar of ultrasonic guidance, constitute puncture needle by needle stand, pin stalk, needle point, comprise bodkin 1 and fine needle 2, fine needle 2 inserts in the bodkin 1 versatilely, and fine needle 2 is longer than bodkin 1, and the needle point 3 of bodkin 1 is an inclined plane shape, the needle point 4 of fine needle 2 is the pin taper, and is provided with a pin hole 6 at pin stalk 5 at least near needle point 4 places.The pin stalk 5 of fine needle 2 is provided with graduation mark 7.Head 8 arc transition of the needle point 4 of fine needle 2 connect.The pin stalk 9 outer trocar sheaths 10 that to insert the analgesia conduit that also are arranged with of bodkin 1.Certainly, pin hole 6 also can be located on the conical surface of needle point 4.Nerve block is intact, extract fine needle 2 and bodkin 1 after, trocar sheath 10 can continue to stay the inside, can insert the analgesia conduit, row continuous narcosis and analgesia.

Its specific implementation process is as follows: because this trocar uses, can show the fascia around nerve sheath, blood vessel, each bundle of brachial plexus nerve and the nerve tract on ultrasonoscopy under ultrasonic guidance, can also show puncture needle, be expelled to the medicinal liquid of tissue.At first ultrasonic probe finds nerve on the brachial plexus nerve path, surveying mid point outside being close to the sagittal plane of ultrasonic probe is entry point, and after the local anesthesia, first coarse needle bioptic is to the brachial plexus nerve sheath, inject a certain amount of local anesthetic, the tighter nerve tract that leans on is scatter.Because the buffer action of fascia in the sheath, medicinal liquid generally spreads near needle point, can not diffuse to whole brachial plexus (transverse section).At this moment, adjust the bodkin angle, direction is aimed at the nerve tract (target nerve) in no medicinal liquid district, surpass the degree of depth that bodkin inserts tissue with ultrasonic mensuration bodkin needle point to the neural distance of target as fine needle, the fine needle that will have graduation mark arrives the target nerve through coarse needle bioptic, injection site anesthetics, fine needle are return in the bodkin after injecting medicinal liquid on one point.Adjust the other target nerve that the bodkin direction is not diffused into to medicinal liquid again, and insert new position by fine needle and carry out second injection.So analogize, carry out multi-point injection (being generally the 3-4 point), make success rate up to 99%.After anesthesia finishes, withdraw from fine needle and bodkin, keep the outer trocar sheath of bodkin in the brachial plexus nerve sheath, insert conduit, be used for the postoperative analgesia, make anesthesia and postoperative analgesic effect better along trocar sheath.

Claims

1, the brachial plexus nerve block trocar of ultrasonic guidance, constitute puncture needle by needle stand, pin stalk, needle point, it is characterized in that: comprise bodkin (1) and fine needle (2), fine needle (2) inserts in the bodkin (1) versatilely, fine needle (2) is longer than bodkin (1), the needle point (3) of bodkin (1) is an inclined plane shape, and the needle point (4) of fine needle (2) is the pin taper, and locates to be provided with at least a pin hole (6) at pin stalk (5) near needle point (4).

2, the brachial plexus nerve block trocar of ultrasonic guidance according to claim 1 is characterized in that: the pin stalk (5) of fine needle (2) is provided with graduation mark (7).

3, the brachial plexus nerve block trocar of ultrasonic guidance according to claim 1 and 2 is characterized in that: head (8) arc transition of the needle point (4) of fine needle (2) connects.

4, the brachial plexus nerve block trocar of ultrasonic guidance according to claim 1 and 2 is characterized in that: the outer trocar sheath (10) that can insert the analgesia conduit that also is arranged with of the pin stalk (9) of bodkin (1).