JPS6226088Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an instrument for non-surgically treating subdural hematoma.

(Conventional technology) Currently, subdural hematomas are treated by performing surgical operations such as craniotomy, but recently with the advent of computerized tomography, it is possible to localize subdural hematomas and identify the nature of their contents. can now be easily determined.

As a result, treatments for subdural hematomas tend to be simpler than the complex surgical procedures involved.

(Problems to be Solved by the Invention) In view of the above-mentioned circumstances, the present invention aims to provide an instrument that can non-surgically treat subdural hematoma without performing a surgical operation such as skull incision.

(Means for solving the problem) The present invention that solves the above problem consists of an inner tube needle with a handle that penetrates the skin from the outside and punctures the skull, and an opening that communicates the area punctured with the inner tube needle to the outside. The dural needle was composed of an outer barrel needle that was inserted into the ventricle and a stylet/ventricular puncture needle that was inserted into the ventricle using the outer barrel needle as a guide.

(Function) The outer needle is fitted into the conical needle of the inner needle as described above, and since the outer needle is integrated with the inner needle, the skin is punctured by holding the handle rod and the conical needle is inserted into the needle. When the tip reaches the skull, rotate the inner needle in a conical shape to perform subdural puncture, pull out the inner needle from the outer needle, keep the outer needle in the subdural state, and remove the outer needle. Drain the subdural fluid through the

In addition, perform subdural puncture in the possible direction for ventricular puncture, and after confirming that the inner plate has been penetrated, insert the ventricular puncture needle into the outer tube needle and advance the needle into the ventricle. Served to drain hematoma.

(Example) Hereinafter, an example of the dural needle of the present invention will be described based on the drawings.

The dural needle is composed of an inner tube needle 1, an outer tube needle 2, and a stylet/ventricular puncture needle 3, and the inner tube needle 1 and the stylet/ventricular puncture needle 3 are designed to be able to penetrate the outer tube needle 2. .

The inner cylindrical needle 1 has a conical needle 5 having a predetermined length and a conical tip integrally fixed to one end of the shaft 4, and a large-diameter disk at the other end of the shaft 4. A portion 6 is integrally formed, and a handle rod 7 is provided on the circumferential surface of the disk portion 6.
is formed protrudingly on the diameter line.

Further, a large-diameter cylindrical portion 8 is integrally formed on the side of the shaft 4 on which the conical needle 5 is connected, and a locking thread 9 is formed on the inner surface of the cylindrical portion 8 so that the conical needle 5 can be connected to the conical needle 5. The base of the outer cylindrical needle 2 fitted on the outside can be engaged therewith.

The outer cylindrical needle 2 includes a hollow needle 10 having an inner diameter into which the conical needle 5 of the inner cylindrical needle 1 described above is inserted;
The length of the hollow needle 10 is such that the length of the hollow needle 10 extends from the base cap 11 to the cylindrical portion 8.
The needle tip of the conical needle 5 is set to such a length that it protrudes from the hollow needle 10 when the conical needle 5 is fully engaged with the locking thread 9. Further, the base cap 11 and the locking thread 9 are engaged with each other by engagement of a protruding edge 12 projecting from the circumferential surface of the base cap 11.

Incidentally, the setting of the outer cylinder needle 2 with respect to the inner cylinder needle 1 is not limited to the above-mentioned engaging means, and other engaging means may of course be used.

The stylet/ventricular puncture needle 3 is composed of a hollow needle 13 having an outer diameter that can be inserted into the hollow needle 10 of the above-mentioned outer cylinder needle 2, and a base cap 14 fixed to one end of the hollow needle 13. The hollow needle 13 is formed to be relatively long so that it can be inserted into the ventricle of the brain, and the distal end thereof is closed and a transverse hole 15 is opened in communication at a position in front of the distal end.

Next, to explain the use of the above-mentioned dural needle A, first, the hollow needle 10 of the outer barrel needle 2 is fitted into the conical needle 5 of the inner barrel needle 1, and the base base 11 is inserted into the cylindrical part 8. Then, the flange 12 is engaged with the locking thread 9 to integrate the inner cylindrical needle 1 and the outer cylindrical needle 2. Next, the inner tube needle 1 is held as shown in FIG. 6, and the scalp is punctured. When the inner tube needle 1 is reached, the inner tube needle 1 is rotated like a drill to puncture the skull, and the needle reaches the subdural space.

In the case of an adult, when the inner tube needle 1 is rotated clockwise after reaching the interplate layer, it can be seen that the inner tube needle 1 has penetrated the inner plate.

After the tip of the hollow needle 10 of the outer needle 2 has reached the subdural space as described above, the inner needle 1 is pulled out from the outer needle 2, and the subdural fluid is drained as shown in FIG. In addition, when pulling out the inner cylinder needle 1 from the outer cylinder needle 2,
The locking thread 9 of the cylindrical portion 8 and the ridge 12 of the base cap 11
If it is difficult to disengage from the cylindrical needle, it can be separated by holding the outer cylindrical needle 2 with a pair and rotating the inner cylindrical needle 1.

If the subdural fluid (hematoma) is not discharged as shown in FIG. 7, insert the stylet/ventricular puncture needle 3 into the external needle 2 and check the structure at the tip of the external needle 2. Furthermore, when cleaning the drainage system, it is convenient to use a connecting tube (extension tube) for dripping. When removing the outer needle 2 after use, be sure to fit the inner needle 1 into the outer needle 2 and pull it out while rotating clockwise.

Furthermore, when draining a hematoma in the ventricle, first make a subdural puncture as described above in a possible direction for ventricular puncture, and after confirming that it has penetrated the inner plate, insert the outer tube needle 2.
Separate and pull out the inner tube needle 1 from the tube, insert the ventricular puncture needle 3 into the outer tube needle 2 instead, position the tip of the ventricular puncture needle 3 in the ventricle, and insert the base cap 14 of the ventricular puncture needle 3. The hematoma is drained by connecting various instruments to the hematoma (see Figure 8).

The dural needle A consisting of the inner tube needle 1, the outer tube needle 2, and the stylet/ventricular puncture needle 3 described above is formed with different thickness and length for use in adults and children.

(Effect of the invention) The dural needle of the present invention has an inner tube needle with a conical needle, an outer tube needle that fits on the outside of the conical needle, and a stylet-cum-ventricular puncture needle that is inserted into the outer tube needle. , the subdural hematoma and intraventricular hematoma can be safely and easily evacuated non-surgically without making any skin incisions. Moreover, since the outer tube needle is inserted into the subdural membrane by being integrated with the inner tube needle, it can be carried out reliably and safely.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the inner needle, Figure 2 is a perspective view of the outer needle, Figure 3 is a perspective view of the stylet and ventricular puncture needle, and Figure 4 shows how the outer needle is fitted into the inner needle. 5 is an enlarged sectional view taken along the line 5-5 of FIG. 4, FIG. 6 is a perspective view showing the operation of holding the inner tube needle and puncturing it, and FIG. 7 8 is a perspective view showing a state in which an external tube needle is punctured into the subdural mater to drain a hematoma, and FIG. 8 is a perspective view showing a state in which a ventricular puncture needle is used to drain an intraventricular hematoma. In the figure, 1: Inner tube needle, 2: Outer tube needle, 3: Stylet/ventricular puncture needle, 4: Axial rod, 5: Conical needle, 7:
Handle stick.

Claims (1)

[Scope of utility model registration request] In addition to integrally fixing the conical needle to the tip of the shaft rod,
an inner cylindrical needle having a handle rod fixed to the circumferential surface of the other end of the cylindrical rod; an outer cylindrical needle that fits on the outside of the conical needle of the inner cylindrical needle and allows the needle tip to protrude; A dural needle consisting of a penetrating stylet and ventricular puncture needle.