CN2675050Y - CT guiding and positioning biopsy needle - Google Patents

Abstract

The utility model discloses a CT guiding and positioning biopsy needle, comprising an archy fixed guide rail 1 and a biopsy needle 2; both sides of the archy fixed guide rail in the shape of semi circular arc are provided with grips 3 which are fixed with both side edges of CT bed; the archy fixed guide rail 1 is provided with an axial slide block 4 of cylindrical shape which is provided with an arc hole inside; the archy fixed guide rail 1 penetrates through the arc hole in the axial slide block 4 of cylindrical shape which is inserted in the round hole of a rectangular parallelepiped moving block 5; the front side of the rectangular parallelepiped moving block 5 is provided with a guide hole of biopsy needle which is vertical to the rectangular parallelepiped moving block 5, and the biopsy needle 2 is inserted in the guide hole of the biopsy needle; the CT guiding and positioning biopsy needle has the advantages of accuracy, rapidity, and simple operation; the puncture needle stays in the body for a short time, and the utility model can be widely used for taking samples to make histopathologic examination when organs in the chest and abdominal cavity of human body generate pathological changes.

Description

CT guiding localized biopsy pin

Technical field

This utility model relates to a kind of medical examining instrument tool, and specifically a kind of CT guiding localized biopsy pin is applicable to the human body breast, uses when the pathology histological examination is done in the sampling of abdominal visceral browser pathological changes.

Background technology

Along with the continuous development of Medical Technology, at present a lot of diseases can be without surgical incision, but obtains diagnosis and treatment with Minimally Invasive Surgery, and particularly tumor disease often need obtain clear and definite pathological diagnosis before treatment, and this is extremely important to formulating therapeutic scheme.Doing the pathology histological examination generally is that tumor tissues in the body cavity is got biopsy with biopsy needle, at first rely on CT scan to determine point of puncture and paracentesis depth and angle, hand-held then puncture needle punctures, its weak point is: accuracy is relatively poor, and operating process is longer, and requires patient's position in piercing process to change, it is tired that the patient feels, the puncture error often occurs, need localised puncture repeatedly sometimes, cause the tumor by local plantation to shift so that develop complications.

Summary of the invention

The purpose of this utility model is to provide a kind of and is utilizing the accurate localized while of CT, can biopsy needle guide accurately thrust rapidly, and the time that operating process and puncture needle stop in vivo is short, the influence that is not subjected to the internal organs of the body light activity, the CT guiding localized biopsy pin of avoiding the tumor by local plantation to shift.

For reaching above purpose, the technical scheme that this utility model adopted is: this CT guiding localized biopsy pin, constitute by arch fixed guide and biopsy needle, the arch fixed guide is a semicircular arc, two ends are provided with the folder mouth that fixes with CT bed dual-side, it is characterized in that on the arch fixed guide, establishing cylindrical axial slider, cylindrical axial slider can slide along the arch fixed guide, to realize that biopsy needle is along the axial swing of arch fixed guide, in the cylindrical axial slider is arcuate socket, the arch fixed guide passes the arcuate socket of cylindrical axial slider, so that biopsy needle is along in the arch fixed guide swing process, the tip of biopsy needle is pointed to the centre all the time, cylindrical axial slider is inserted in the circular hole of cuboid moving block, and the cuboid moving block can rotate for axle by cylindrical axial slider, before the realization biopsy needle, the back swing, vertical cuboid moving block is established the biopsy needle pilot hole in the front side of cuboid moving block, and biopsy needle is inserted in the biopsy needle pilot hole.This utility model is also implemented by following measure: also establish pilot pin on the cuboid moving block, with the fixing turned position of cuboid moving block and cylindrical axial slider, locating wedge is established in end at cylindrical axial slider, with the shift position of holding cylindrical axial slider along the arch fixed guide; The folder mouth at described arch fixed guide two ends is rectangular of " Contraband " shape, establish set bolt on the lower panel, top panel is thicker, establish chute in the top panel, the length of chute is 10-20cm, and the displacement at middle part is established slide block at arch fixed guide two ends when lying on the CT bed to adapt to the people, slide block is stuck in the chute, so that the arch fixed guide is micro-steadily mobile before and after doing; Described biopsy needle is made of outer needle tubing and interior nook closing member, is the rotary-cutting type puncture needle, belongs to prior art, also available other forms of biopsy needle.When using this utility model, for breast, pathological changes or tumor are arranged in the body cavitys such as abdominal cavity and need wear long and adopt the patient of biopsy, carry out CT scan earlier, determine the three-dimensional position of focus, and on CT machine screen, accurately calculate skin penetrating and put the distance and the puncture angle of pathological changes, meanwhile, this biopsy needle is fixed on the CT bed side, when the sensing of puncture needle with set bolt, angle, the degree of depth is all reserved the back with locating wedge and gim peg fixation, uses hand propelled puncture needle handle then, be punctured to definite degree of depth, and the rotation nook closing member, can extract biopsy needle and get final product organizing rotary-cut outside in the needle tubing.

Advantage of the present utility model is: compare with the biopsy needle of present use, collect CT scan with biopsy in doing, accurately, rapidly, operation is simple, the puncture needle time of staying in vivo is short, alleviated patient's misery, also alleviate doctor's working strength, significantly reduced the chance that the tumor by local plantation is shifted, prevented complication.

Description of drawings

Fig. 1 looks sketch map for structure master of the present utility model.

Fig. 2 is the axis cross-sectional schematic of this utility model along the arch fixed guide.

Fig. 3 is that this utility model is along the A-A cross-sectional schematic.

Assembling deflated state sketch map when Fig. 4 uses for this utility model.

The specific embodiment

Make this utility model with reference to accompanying drawing 1,2,3,4.This CT guiding localized biopsy pin, constitute by arch fixed guide 1 and biopsy needle 2, arch fixed guide 1 is a semicircular arc, two ends are provided with the folder mouth 3 that fixes with CT bed dual-side, on arch fixed guide 1, establish cylindrical axial slider 4, cylindrical axial slider 4 can slide along arch fixed guide 1, in the cylindrical axial slider 4 is arcuate socket, arch fixed guide 1 passes the arcuate socket in the cylindrical axial slider 4, so that biopsy needle 2 is along in arch fixed guide 1 swing process, the tip of puncture needle 2 is pointed to the centre all the time, cylindrical axial slider 4 is inserted in the circular hole of cuboid moving block 5, cuboid moving block 5 can rotate for axle by cylindrical axial slider 4, and vertical cuboid moving block 5 is established the biopsy needle pilot hole in the front side of cuboid moving block 5, and biopsy needle 2 is inserted in the biopsy needle pilot hole.On cuboid moving block 5, also establish pilot pin 6,, establish locating wedge 7 in the end of cylindrical axial slider 4, with the shift position of holding cylindrical axial slider 4 along arch fixed guide 1 with the turned position of fixing cuboid moving block 5 with cylindrical axial slider 4; The folder mouth 3 at described arch fixed guide 1 two ends is rectangular of " Contraband " shape, establish set bolt 8 on the lower panel, top panel is thicker, establish chute 9 in the top panel, the length of chute 9 is 10-20cm, the displacement at middle part is established slide block 10 at arch fixed guide 1 two ends when lying on the CT bed to adapt to the people, and slide block 10 is stuck in the chute 9; Described biopsy needle 2 is made of outer needle tubing and interior nook closing member.

Claims (2)

1, a kind of CT guiding localized biopsy pin, constitute by arch fixed guide (1) and biopsy needle (2), arch fixed guide (1) is a semicircular arc, establish and the fixed folder of CT bed dual-side mouthful (3) at two ends, it is characterized in that on arch fixed guide (1), establishing cylindrical axial slider (4), in the cylindrical axial slider (4) is arcuate socket, arch fixed guide (1) passes the arcuate socket in the cylindrical axial slider (4), cylindrical axial slider (4) is inserted in the circular hole of cuboid moving block (5), cuboid moving block (5) can rotate for axle by cylindrical axial slider (4), establish the biopsy needle pilot hole at the vertical cuboid moving block in the front side of cuboid moving block (5) (5), biopsy needle (2) is inserted in the biopsy needle pilot hole.

2, CT guiding localized biopsy pin according to claim 1 is characterized in that also establishing pilot pin (6) on cuboid moving block (5), establishes locating wedge (7) in the end of cylindrical axial slider (4); The folder mouth (3) at described arch fixed guide (1) two ends is rectangular of " Contraband " shape, establish set bolt (8) on the lower panel, establish chute (9) in the top panel, the length of chute (9) is 10-20cm, establish slide block (10) at arch fixed guide (1) two ends, slide block (10) is stuck in the chute (9).

Images