CN2560315Y

CN2560315Y - Brain stereoscopic orienting instrument

Info

Publication number: CN2560315Y
Application number: CN01269249U
Authority: CN
Inventors: 刘伯晨; 林红雨
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-31
Filing date: 2001-10-31
Publication date: 2003-07-16
Anticipated expiration: 2011-10-31

Abstract

The utility model relates to a brain stereotactic device of medical brain surgical instruments and consists of a bow-shaped positioning frame (1), a fixed joint (2), a fixed arm (3), four fixed bars (4) and a puncture outfit (5), the intracerebral focus target is determined according to CT films and the target and the distance of the anteroposterior diameter of the skull are calculated, so as to determine the two positioning points at both sides of the skull and the angular direction position of a puncture needle, then the fixed arm and the puncture outfit are adjusted and fixed on the skull, after that, the bow-shaped positioning frame is rotated to puncture the intracerebral focus for treatment. The utility model has the advantages of simple and easy operation, short preparation time before operation, high precision of the puncture target, timely rescue of patients and so on.

Description

Stereo brain orienting instrument

Technical field

This utility model relates to medical cerebral surgery operation apparatus, is applied to the operation auxiliary facilities that leads in puncture of intracerebral lesion positioning and directing and the art.

Background technology

At present domestic and international modern high accuracy CT stereo brain orienting instrument has been applied to clinically, but use is loaded down with trivial details, before the art time long, critical, haziness patient rescued incured loss through delay valuable time, and this instrument price costliness.China's patent 99222083.1 stereotaxis intracerebral lesion perforators are 90 ° of structures, the less stable of localised puncture.China's patent 99243363.0 CT stereo brain orienting instruments are 180 ° of two ends elongated structures, though solved position stability, when two anchor points of head both sides near the time, be difficult to operation, because of puncture supporter is an overall structure, the operation of hold-down bars is difficulty comparatively, and is consuming time longer again.For this reason, this utility model provides the structure that can change angular position between a kind of locating rack and the hold-down bars relatively, abdicates the space of hold-down bars top, make hold-down bars to the head both sides fixedly the time, easy to operate, improve the degree of accuracy of puncture target spot, and shortened operating time.

Summary of the invention

Bow type locating rack of the present utility model (1) is 180 ° of semicircular ring, anchor ring has the angle groove, on the inside and outside face of cylinder of semicircular ring the V-type groove is arranged, the semicircular ring two ends are to prolapse and protruding cylindrical shaft, and the rotating shaft center is an internal thread hole, and be screwed into hold-down bars (4), the rotating shaft end face has a groove, and two overhanging rotating shafts are packed in the hole of fixing joint (2), and can fix by screw, on the outer end side surface in hole the angle groove is arranged, so that observe the angular position that bow type locating rack rotates.The rear vertical direction in fixing joint hole is established a hole, and by the fixing fixed arm (3) of screw.On the face of fixed arm the length groove is arranged, the lower end is half-cylindrical elbow shape, and the semicircle center is an internal thread hole, and is screwed into hold-down bars (4), the external screw thread of hold-down bars has a facet, and be carved with the length groove, and hold-down bars the inner is a taper, the outer end is that annular knurl is cylindric, on the anchor ring of bow type locating rack two ends evagination direction, perforator (5) is housed, and can be fixed in the V-type groove on the inside and outside face of cylinder by screw, there is through hole at the V-type groove middle part above the perforator near inside and outside cylinder place.This equipment key is that the centrage of the cylindrical handle puncture needle determined of four hold-down bars centrages and perforator V-type groove is in same plane, or basically in same plane, with accurate location intracerebral lesion.Hold-down bars (4) outer end is that annular knurl is cylindric, can carve flat recess or cross recess at external end head, also the outer end head can be changed into quadrangular or six prisms, perhaps is processed into two planar homalocephalus, is convenient to turn hold-down bars.

On the inside and outside face of cylinder of arc locating rack (1) semicircular ring the V-type groove is arranged, also can be used in the inside and outside face of cylinder and substitute to the inclined-plane of after-contraction.V-type groove above the perforator (5) can be a semi arch, also can be circular hole.

This utility model compared with the prior art, its advantage is when being fixed to the head both sides, bow type locating rack can rotate, abdicate the locus, location of hold-down bars top, comparatively convenient when making the operation of four hold-down bars, and then forward bow type locating rack to the hold-down bars top position, thus shortened regular time, improve the degree of accuracy of puncture target spot, striven for valuable time for giving emergency treatment to a patient.The art that also can be used for brain endoscope guiding and neurosurgery leads etc.

Description of drawings

Fig. 1 is the structural representation of stereo brain orienting instrument.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the left side view of Fig. 1.

The specific embodiment

This utility model will be further described in conjunction with the accompanying drawings.The focus target spot that occurs on the head CT note sheet according to patient, the size of head anteroposterior diameter, determine the distance of target spot and head anteroposterior diameter, thereby determine the position of each two fixing point of head both sides and the angular position of puncture needle, adjust stereo brain orienting instrument according to these data then, unclamp each screw, press the position of each two fixing point of head both sides, adjust fixed arm, after making hold-down bars center to the hold-down bars centre distance in the rotating shaft on the fixed arm equal the distance of two fixing points of the every side of head, tighten screw and fix.Press the angular position of puncture needle again, adjust perforator, when making it be in same angle, tighten screw and fix.Then this equipment is fixed in patient's head, make four hold-down bars respectively be fixed on the fixing point position of patient's head both sides, again bow type locating rack is turned to the top of hold-down bars, and make puncture needle centrage and hold-down bars centerline when same plane, tighten screw, fixing bow type locating rack, puncture needle can carry out puncture for treating in brain in perforator V-type groove.

Claims

1, a kind of stereo brain orienting instrument that relates to medical cerebral surgery operation apparatus, has screw, it is characterized in that bow type locating rack (1) is 180 ° of semicircular ring, anchor ring has the angle groove, in semicircular ring, the V-type groove is arranged on the external cylindrical surface, the semicircular ring two ends are to prolapse and protruding cylindrical shaft, the rotating shaft center is an internal thread hole, and be screwed into hold-down bars (4), and the rotating shaft end face has a groove, and two overhanging rotating shafts are packed in the hole of fixing joint (2), and can fix by screw, on the outer end side surface in hole the angle groove is arranged, the rear vertical direction in hole is established a hole, and by the fixing fixed arm (3) of screw.On the face of fixed arm the length groove is arranged, the lower end is half-cylindrical elbow shape, the semicircle center is an internal thread hole, and be screwed into hold-down bars (4), the external screw thread of hold-down bars has a facet, and be carved with the length groove, hold-down bars the inner is a taper, the outer end is that annular knurl is cylindric, on the anchor ring of bow type locating rack two ends evagination direction, perforator (5) is housed, and in can being fixed in by screw, in the V-type groove on the external cylindrical surface, in V-type groove middle part above the perforator is approaching, there is through hole at the outer cylinder place, and the centrage that makes the cylindrical handle puncture needle in four hold-down bars centrages and the perforator V-type groove is in same plane.

2, according to the 1 described stereo brain orienting instrument that requires of right, it is characterized in that said hold-down bars (4) outer end annular knurl is cylindric, can carve flat recess or cross grooved ring at external end head, also external end head can be quadrangular, or six prisms, or be two planar homalocephalus.

3, according to the 1 described stereo brain orienting instrument that requires of right, it is characterized in that saidly on the inside and outside cylinder of semicircular ring of bow type locating rack (1), the V-type groove being arranged, also can be used in inside and outside cylinder and substitute to the inclined-plane of after-contraction.

4, according to the 1 described stereo brain orienting instrument that requires of right, it is characterized in that the V-type groove above the said perforator (5), can be semi arch, also can be circular hole.