CN2408831Y

CN2408831Y - Subarachnoid cavity retention suture needle

Info

Publication number: CN2408831Y
Application number: CN 00213709
Authority: CN
Inventors: 鲁统标; 赵学风; 孙庆旭; 史斌; 王宏伟; 李庆国
Original assignee: 鲁统标
Priority date: 2000-03-13
Filing date: 2000-03-13
Publication date: 2000-12-06
Anticipated expiration: 2010-03-13

Abstract

The utility model discloses an indwelling needle for monitoring intracranial pressure and draining a subarachnoid cavity. The utility model adopts the structure of a sleeve needle. The utility model comprises a flexible outer sleeve made of plastics, wherein, a side hole is arranged on the wall of the outer sleeve, and the back part of the outer sleeve is provided with an interface. A needle core is sheathed and arranged inside the outer sleeve, and the tip end part of the needle core and the matching position of the outer sleeve are in smooth connection. Length scales are arranged on the outer surface of the outer sleeve, and a fixing plate is arranged on the outer sleeve. The utility model has the characteristics that an indwelling needle and a puncture point are tightly cooperated, the brain hydrops can not flow out under the condition of drainage, the intracranial pressure can be monitored accurately, etc.

Description

The subarachnoid space remaining needle

This utility model relates to technical field of medical instruments, particularly a kind ofly is used for the subarachnoid space remaining needle that monitoring intracranial pressure and subarachnoid space drain are used.

In clinical treatment, used apparatus generally is that anesthesia spinal needle cooperates epidural catheter when indirect determination intracranial pressure or arachnoidea drain at present, and its operation is to puncture with anesthesia spinal needle earlier, by inserting epidural catheter in the puncture needle, carries out drain again.When measuring intracranial pressure, get final product at a termination pick off of epidural catheter.When using this apparatus to measure intracranial pressure or drain, because of point of puncture aperture ratio and epidural catheter diameter are big, the imprecision that coincide easily causes hydrocrania to leak outside, and the monitoring intracranial pressure result is inaccurate, even causes cerebral hernia.Because of epidural catheter is thinner, equilibration time is long, and monitoring result is inaccurate.

The purpose of this utility model provides a kind of subarachnoid space remaining needle, be used for monitoring intracranial pressure and subarachnoid space drain, have remaining needle and cooperate with point of puncture tightly, hydrocrania does not outflow, monitors characteristics such as intracranial pressure is accurate during drain, to overcome above-mentioned deficiency of the prior art.

The technical solution of the utility model is, adopt trocar design, comprise that plastics make flexible trocar sheath, the overcoat tube wall is provided with side opening, interface is established at the rear portion of trocar sheath, and cover is fitted with nook closing member in the trocar sheath, and the needle core tip end is connected with the trocar sheath cooperation place is slick and sly, the trocar sheath outer surface is provided with the length scale, and trocar sheath is provided with fixing head.

Use for ease of connecting, can set up to prolong and manage, the end that prolongs pipe is respectively equipped with forward and backward interface.

During use, patient gets lateral position, after the local anaesthesia of interspace of lumbar vertebrae (being generally L2-5), earlier with the broken skin of transdermal acupuncture, supraspinal ligament, interspinal ligaments, ligamenta flava,, sky occurs and fall to feeling along the slow inserting needle of point of puncture with remaining needle (afterwards connecing 2 milliliters of syringes), can confirm to enter subarachnoid space after the pumpback hydrocrania, withdraw from nook closing member, trocar sheath is inserted appropriate depth, make the outer trocar sheath bending of human body again, make it to be affixed on the human body, be fixed on the human body by fixing head with adhesive plaster, connect to prolong and manage.When measuring intracranial pressure, pick off is got final product with prolonging to manage to be connected.

The utlity model has remaining needle and cooperate with point of puncture tightly, during drain hydrocrania do not outflow, monitor intracranial pressure accurately, be difficult for causing characteristics such as cerebral hernia.Because of trocar sheath is thicker, equilibration time is short, and monitoring result is more accurate.

Fig. 1 is this utility model structural representation;

Fig. 2 is the nook closing member structural representation in this utility model;

Fig. 3 is the outer sleeve structure sketch map in this utility model;

Fig. 4 is the I position enlarged drawing among Fig. 3;

Fig. 5 is the structural representation that prolongs pipe in this utility model.

With reference to Fig. 1, the 2nd, trocar sheath is fitted with nook closing member 1 in the trocar sheath 2.The structure of trocar sheath 2 is with reference to Fig. 3, and the outer surface of trocar sheath 1 is provided with length scale 4, and trocar sheath is provided with fixing head 5, and the rear portion of trocar sheath 2 is provided with interface 6, and with reference to Fig. 4, casing wall is provided with side opening 7 outside.The structure of nook closing member is with reference to Fig. 2.The structure that prolongs pipe 8 is respectively equipped with forward and backward interface 9,10 with reference to Fig. 5 in the end that prolongs pipe 8.

Claims

1, a kind of subarachnoid space remaining needle, adopt trocar design, it is characterized in that comprising that plastics make flexible trocar sheath (2), trocar sheath (2) wall is provided with side opening (7), interface (6) is established at the rear portion of trocar sheath, and cover is fitted with nook closing member (1) in the trocar sheath, and the needle core tip end is connected with the trocar sheath cooperation place is slick and sly, the trocar sheath outer surface is provided with length scale (4), and trocar sheath is provided with fixing head (5).

2, remaining needle according to claim 1 is characterized in that said trocar sheath interface (6), and the trocar sheath interface is connected with and prolongs pipe (8), and the end that prolongs pipe is respectively equipped with forward and backward interface (9), (10).