CN1150012A

CN1150012A - Apparatus and method for locating elliptic hole of basis cranii

Info

Publication number: CN1150012A
Application number: CN96115892A
Authority: CN
Inventors: 张树仁; 张齐委
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-16
Filing date: 1996-07-16
Publication date: 1997-05-21
Anticipated expiration: 2016-07-16
Also published as: CN1073396C

Abstract

A locating device and method for foramen ovale of basis cranii are suitable to cure trigeminal neuralgia by skin puncture and injection. Said device is composed of head fixator designed specially and location measuring unit. Two connecting rods at same height are respectively fixed to locating screw arbor and rotate around it. The cursor is fixed according to measured result. By means of the shallow locating slot at 78 deg. on cursor, the location is correctly performed based on puncture depth and 45 deg. of angle and out of relation to different patients. Its advantages include high correctness and safety, low cost and easy operation.

Description

Foramen of cranial base positioner and method

The positioner and the method for accurate localized foramen of cranial base when the present invention relates to percutaneous puncture Mike injection capsule.

When the patient punctures to the Mike's capsule that is positioned at foramen of cranial base usually, can only be by rule of thumb, the angle and the degree of depth of puncture vary with each individual, be difficult for grasping, therefore have certain blindness, accuracy rate is low, dangerous big, repeated localised puncture then causes very big misery to the patient, and easily meets accident; The existing method that positions by X ray and video monitor equipment, device is complicated, and is costly, is difficult for penetration and promotion.

The objective of the invention is to overcome above shortcoming, a kind of simple and easy to do, foramen of cranial base positioner and method that cost is low of accurately locating (direction and the degree of depth) for percutaneous puncture Mike capsule treatment trigeminal neuralgia etc. is provided, to improve the treatment success rate, reduce patient's slight illness to greatest extent.

For the ease of understanding the present invention, setting forth briefly, its positioning principle and method are necessary.Dissect practice and find two oval foramen A and A on the head basis cranii ₁With two rootss of zygoma 0 and 0 ₁(hereinafter to be referred as the oval foramen on line) in alignment, and apart from 0A ≈ AA ₁≈ 0 ₁A ₁, therefore roots of zygoma spacing 00 is arranged ₁(L) trisection can be determined foramen of cranial base A (or A ₁) correspondence position (as shown in Figure 1) on line.Obviously with 00 ₁Vernier cursor that is parallel to each other (EF) and the vernier that upward slides thereof can be fixed on the place, projection B position of oval foramen A, are example with the right side, and EB=L/3+H (right positioner spiro rod length) is promptly arranged.The long EF of above-mentioned rule then is the parallel distance of its two connecting rods of clamping.Be subjected to the mandibular bone size restrictions again and definite length A B is known definite (getting AB=13cm), determine on the plane 00 according to dissecting practice ₁C=78 ° of the best needle angle ∠ of EF, can determine i.e. AC=ABtg ∠ C, and the dimensional orientation of inserting needle like this by right angle △ ABC along the degree of depth AC of shallow slot inserting needle on the vernier, be benchmark then, and the angle of choosing connecting rod calcaneus branches frame can be determined the position for 45 ° with the vertical rack.

Provide specific embodiments of the invention in detail below in conjunction with accompanying drawing.

Fig. 1. location survey schematic diagram of the present invention;

Fig. 2. population structure sketch map of the present invention.

Wherein: 1. stove bolt, 2. support, 3. positioning screw, 4. vernier, 5. directed shallow slot, 6. steady pin, 7. pallet, 8. base, 9. vernier cursor, 10. connecting rod, 11. chains, 12. circles, 13. bolts, 14. clamping screws.

As shown in Figure 2, the present invention is made up of positioning measuring device and head maintenance (deciding) device two parts.Wherein the head fixing device is by tuning fork shape (or U-shaped) support 2 as the band base 8 of supporting body, two semicircular ring that connect with bolt 13 on its both upper ends thereof be harmonious the head circle 12 that forms and on stove bolt 1, and the pallet 7 that is fixed on a scalable height of support 2 bottoms constitutes; Positioning measuring device then is two roots of zygoma positioning screws 3 that are in sustained height or horizontal level by support 2 middle parts, is fixed on the fixed special-shaped vernier cursor 9 parallel with positioning screw 3 of positioning screw 3 and two connecting rods 10 that can rotate around it and connecting rod 10 other end clampings and is fixed on two chains, 11 formations of connecting-rod head.The other end of above-mentioned chain 11 can rely on clamping screw 14 to be fixed on the support 2, chain 11 as the mechanism of a definite dimensional orientation, its effect is to affect vernier cursor 9 to rotate around positioning screw 3, to determine that the optimal spatial azimuth angle theta is 45 °, therefore be not difficult on support 2, two scalable clamped screw rods to be set and limit its position (not drawing among the figure), replace above-mentioned chain with the θ angle near positioning screw 3.Which is provided with the vernier 4 of two directed shallow slots 5 of restriction metal needle inserting needle direction, then can be locked on the vernier cursor 9 by steady pin 6, directed shallow slot 5 is 78 ° with ∠ C and scribes, its thickness yardstick should match with the radial dimension with pin, and this orientation shallow slot 5 also can be the pore of corresponding scale or a lid shape thing (figure slightly) that keeps directed inserting needle is set above directed shallow slot 5.

Utilizing said apparatus to carry out the localized method of foramen of cranial base is at first to adjust pallet height, makes two positioning screws, the two roots of zygoma positions about head of conflicting respectively, instrumentation or read H and H ₁Length value calculates L=EF-(H+H ₁), draw the projection B of oval foramen on vernier cursor divided by 3 then, moving cursor is to the B place and fix it, and then rotation rule, the angle that makes connecting rod and vertical rack is 45 °, the effective range of its angle θ can reach 45 ° ± 5 °, pin can be put into directed shallow slot, can reach predetermined position so that AC (AC=ABtg78 °) is long as needling length.The length of above-mentioned EF is got 18cm usually.

Obviously, be foundation with the anatomical structure, measurement by roots of zygoma etc. can conveniently realize the location to foramen of cranial base.Apparatus and method provided by the invention, the angle and the degree of depth in its when puncture are fixed, promptly do not change with the spacing of patient or two rootss of zygoma, so accurate positioning, safety, operate very easyly, and cost is low, and penetration and promotion will be removed misery for the patient.

Claims

1. the present invention relates to foramen of cranial base positioner and method, it is made up of head maintenance (deciding) device and positioning measuring device, it is characterized in that

A). the head fixing device is by the tuning fork shape support [2] as the band base [8] of supporting body, head circle [12] that two semicircular ring that connect with bolt [13] on its both upper ends thereof form relatively and the stove bolt [1] on it, and the pallet [7] that is fixed on a scalable height of support [2] bottom is formed

B). positioning measuring device then is two positioning screws [3] that are in sustained height or horizontal level by support [2] middle part, two connecting rods [10] and connecting rod [10] other end clamping fixed thereon and that can rotate around it are fixed, special-shaped vernier cursor [9] parallel with positioning screw [3] and two chains [11] that are fixed on connecting rod [10] end constitute, the other end of above-mentioned chain [11] can rely on clamping screw [14] to be fixed on the support [2], be provided with the vernier [4] of two directed shallow slots [5], then be locked on the vernier cursor [9] and form by steady pin [6], and directed shallow slot [5] is 78 ° with angle to be scribed, and its yardstick should match with the radial dimension with pin.

2. device according to claim 1, its localization method is a height of at first adjusting pallet [7], makes two positioning screws [3], the two roots of zygoma positions about head of conflicting respectively, instrumentation or read H and H ₁Length value calculates L=EF-(H+H ₁), draw the projection B of oval foramen on vernier cursor [9] divided by 3 then, moving cursor is to the B place and fix it, and then rotation rule, making the angle theta (optimal spatial angle) of connecting rod and support is about 45 °, pin can be put into directed shallow slot, can reach predetermined position as needling length so that AC (AC=ABtg78 °) is long.

3. apparatus and method according to claim 1 is characterized in that above-mentioned directed shallow slot [5] can be the pore of corresponding size or the lid shape thing that a qualification inserting needle direction is set in directed shallow slot [5] top.

4. apparatus and method according to claim 1 is characterized in that above-mentioned chain [11] can be used in support [2] and upward near positioning screw [3] two telescopic clamped screw rods replacements is set.