CN201968836U

CN201968836U - Puncture needle guider

Info

Publication number: CN201968836U
Application number: CN2011200452246U
Authority: CN
Inventors: 冯威健
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-23
Filing date: 2011-02-23
Publication date: 2011-09-14
Anticipated expiration: 2021-02-23

Abstract

The utility model relates to a puncture needle guider, which comprises a needle support bracket (1), a positioning guiding device (2), and a support rod (11) connected to the needle support bracket (1) and the positioning guiding device (2), wherein the positioning guiding device is provided with a bubble leveling meter (25). By using the puncture needle guider together with various different medical instruments, the operations, such as puncture, biopsy, injection, ablation, and the like, can be accurately performed on a focus point under the guide of an image fault layer. The puncture needle guider is conveniently operated, has simple structure and is low in cost. The puncture needle guider can be used for accurately puncturing even by a beginner. The accuracy is obviously promoted, the fault is reduced and the puncture needle guider is easily popularized.

Description

A kind of puncture needle guider

Technical field

This utility model relates to a kind of medical apparatus and instruments, particularly a kind ofly is used for aid in guide puncture needle pinpoint puncture needle guider in three dimensions under medical image such as CT.

Background technology

When inside of human body generation pathological changes, need to utilize puncture that focus is carried out biopsy or treatment sometimes.Normally determine the orientation of focus and skin anchor point and the degree of depth of puncture needle by means of instrument such as CT scan device, at first on the cross section of human body, measure the position of focus, in this aspect, select best inserting needle position and needle angle, utilize the three-dimensional structure picture decision focus of inserting needle aspect, needle angle and depth of needle and the exact position of lancet puncture.Though the CT scan device can be determined three-dimensional needle angle and depth of needle exactly, the puncture process need with puncture needle along a fixed direction inserting needle.After puncturing successfully, carry out CT scan again and confirmed.Concrete piercing process is as follows:

The CT image of scanning lesions position carries out three-dimensional reconstruction before the art.Analyze the 3 D stereo anatomy relationship of tumor and structures surrounding, design tumor puncture target spot.In most cases, should determine quantity, angle, the degree of depth, the skin entry point coordinate and puncture target coordinate of puncture needle before this many target spots synchronous therapeutic scheme art for guaranteeing that therapeutic effect need design many target spots synchronous therapeutic scheme usually.

Patient carries out CT scan after entering operating room again.Paste telltale mark at the tumor locus body surface before the scanning, metal that common employing can be developed or plastics fence or location paper on the CT image.After the scanning, carry out image analysing computer once more, with reference to the plan of formulating before the art, and careful measuring and calculating, final definite tumor puncture target spot and skin penetrating point, after finishing operation designing, all target spots and skin penetrating point are connected one to one, the coordinate parameters of corresponding point to point such as two-dimentional needle angle, depth of needle are the three-dimensional parameter of location of operation puncture.

After above-mentioned localised puncture parameter is determined, fault plane cursor in the time of can be by means of the axial scan on the CT equipment, open this cursor and be the X-axis of the elements of a fix at the projection line of patient's body surface, skin penetrating is put the count intersection point of (Y-axis) and CT cursor of pairing body surface telltale mark and can be defined as the skin entry point during design, with the marking pen that do not fade in the enterprising row labels of skin.

The skin entry point promptly begins the tumor target spot that punctures after determining.Usually determine that by protractor needle angle and design puncture angle are consistent as far as possible in the puncture, but often error is bigger owing to free-hand operation in the actual mechanical process, the abecedarian is difficult to once successfully accurately sting accurate design target spot.Often in piercing process, need repeatedly CT scan to confirm and the angle of adjustment puncture needle and the angle of human body fault plane.Operating time prolongs, patient's radiation dose increases greatly thereby make.Increase owing to repeated localised puncture and tumor target spot puncture poor accuracy makes postoperative complication, and directly influence therapeutic effect.

In addition, existing horseley-Clarke technique is difficult to be applied in the operation at other positions of human body, and main cause is that the soft tissue at other positions of human body is fixing with respect to osseous tissue position on every side, the coordinate setting that makes image space and patient space be difficult to agree.Therefore the fixed guide locating device provided direction of puncture can being fixed up of neither one gone back in the intervention at other positions of human body puncture, usually use the guiding of real-time CT image, but because the puncture guiding is not located, still there is the blindness in the piercing process, puncture instrument in doctor's hands does not have objective accurate position mark, be difficult in the piercing process puncture needle is fixed on the projected path, can only be with doctor individual's experience, need constantly carry out image scan and adjust direction, final result may still have certain deviation with desirable Planned Route, and time-consuming and influence therapeutic effect.In addition, when CT scan doctor can accept unnecessary roentgenization with the hand steered puncture needle of holding.

Because artificial factor is more, usually causes inserting needle inaccurate, the degree of accuracy of influence treatment.Sometimes need to repeat repeatedly inserting needle, can cause mistake to be worn when serious, bring great misery and risk to the patient.Therefore, the insider develops some and is used to the positioning means for positioning that punctures.For example: Chinese patent 200920312841.0 is Augusts 18 2010 date openly, a kind of CT biopsy needle guide locating rack is disclosed, this patent has adopted fixed bar to rotate the scale location, can guarantee puncture needle localized certain precision in three dimensions, but owing to always have error in the part processing process, consequently locating accuracy still is limited.

And for example Chinese patent 201020300259.5 open 2010 dates JIUYUE are 29, disclose a kind of needle body supporting bracket, this support is equipped with direction arrow plate, though stationkeeping ability increases, but can only satisfy the location at two-dimensional space, three-dimensional stationkeeping ability is limited.So be badly in need of solving with upper bracket in the insufficient problem of the empty positioning accuracy of three-dimensional.

Summary of the invention

Though the CT location can provide the numerical value of three-dimensional coordinate, but puncture needle is accurately located in three dimensions and guided puncture has difficulties, in order to overcome this problem, the invention provides a kind of puncture needle guider, this puncture needle guider can guarantee puncture needle accurate location and guided puncture in three dimensions.

The technical scheme that the present invention solves its technical problem employing is: a kind of puncture needle guider, comprise the support bar of needle body supporting bracket, position guiding device, connection needle body supporting bracket and position guiding device, it is characterized in that: position guiding device is provided with level indicator.

Laying of all CT and magnetic resonance detection instrument all is to be benchmark with the earth's core, and the data of all angles that obtained are benchmark with the earth's core zero degree or level angle all also.Usage level instrument of the present invention can guarantee the level of position guiding device, for the angle of regulating puncture needle provides a localized basis, make that the data of all angles of puncture direction all are is benchmark with the earth's core zero degree (perhaps level angle), and then make the accurate location of position guiding device in three dimensions become possibility.

Preferred air-bubble level is oblate, and when position guiding device is in level, the bubble in the air-bubble level will be positioned at the center of oblate air-bubble level.Or air-bubble level is two-way column, and two column air-bubble level angles are 90 °.

Position guiding device is provided with positioning pedestal and seeker, is used to indicate first switch block that links to each other with pedestal of puncture needle angle, second switch block that links to each other with first switch block, the target seeker of fixedlying connected with second switch block.

Preferred first switch block is half-cylindrical, and first switch block has a rectangle end face, and pedestal is provided with the half-cylindrical identical semicolumn groove with first switch block, and second switch block is cylindrical, and first switch block is provided with and the identical cylindrical groove of the second switch block shape.

Preferred target seeker comprises support ring, one end of support ring links to each other with seeker, the other end of support ring has open slot, support ring also is provided with handle at the open slot place, support ring and seeker connecting place are provided with the V-type groove, be provided with slide block in the support ring, shoe surface is useful on the needle tray that puncture needle passes through.

Preferred support ring is provided with plane of orientation and position line, and plane of orientation is parallel with the rectangle end face of first switch block with position line.

Preferred first switch block can be with respect to pedestal counterclockwise and clockwise rotate 0 °～30 °, and base-plates surface is provided with graduated disc, and scale range is-30 °～+ 30 °.

Preferred second switch block can be with respect to first switch block counterclockwise and clockwise rotate 0 °～360 °, and the surface of first switch block is provided with graduated disc, and scale range is counterclockwise and 0 °～180 ° of clockwise directions.

Preferred orientation guiding device and support bar junction are provided with latch, and support bar has protective jacket outward.

Preferred support bar is the universal connecting rod of ball-and-socket hinge style, the universal connecting rod of ball-and-socket hinge style centre is hollow and is installed with steel wire, universal connecting rod of ball-and-socket hinge style and needle body supporting bracket junction are provided with screw thread and nut, universal connecting rod of ball-and-socket hinge style and needle body supporting bracket junction also are provided with the slideway that runs through support bar, be provided with pole in the slideway, pole links to each other with an end of steel wire, and the other end of steel wire links to each other with the junction of universal connecting rod of ball-and-socket hinge style and position guiding device.

The invention has the beneficial effects as follows that the puncture needle guider can cooperate various different medical utensils, realize the guiding of image tomography down accurately to the focus point puncture, biopsy, injection; This device is easy to operate, simple in structure, with low cost, has simplified the technology content of stereotactic puncture, the tumor target spot even if the abecedarian also can puncture exactly; Increased the probability of one-time puncture success, effectively shortened operating time, reduced the amount of radiation of the passive acceptance of patient, made the accuracy of percutaneous targeting puncture obtain the significance raising, be easy to popularize.

Description of drawings

Fig. 1 is the axonometric chart of puncture needle guider described in the utility model.

Fig. 2 is the axonometric chart of the position guiding device of puncture needle guider described in the utility model.

Fig. 3 is the front view of the position guiding device of puncture needle guider described in the utility model.

Fig. 4 is the vertical view of the position guiding device of puncture needle guider described in the utility model.

Fig. 5 is the right view of the position guiding device of puncture needle guider described in the utility model.

Fig. 6 is the axonometric chart of the support bar of puncture needle guider second embodiment described in the utility model.

Fig. 7 is the front view of the support bar of puncture needle guider second embodiment described in the utility model.

The specific embodiment

Below in conjunction with accompanying drawing puncture needle guider described in the utility model is specifically described.

Embodiment 1

Among Fig. 1, the puncture needle guider comprises needle body supporting bracket 1, support bar 11, position guiding device 2, one end of support bar 11 connects the base 12 of needle body supporting bracket, other end grafting position guiding device 2, the upper surface of position guiding device is provided with air-bubble level 25, and air-bubble level 25 is oblate.Support bar 11 is the universal coils that can rotate and can be fixed on certain position to any direction, use air-bubble level can guarantee the level of position guiding device 2, provide a localized benchmark for regulating puncture needle, and then make the accurate location of position guiding device in three dimensions become possibility.Air-bubble level also can change digital level indicator or gravimeter into.

The concrete structure of position guiding device 2 is seen Fig. 2,3,4,5.Position guiding device 2 comprises positioning pedestal 20, and an end of pedestal 20 links to each other with support bar 11, and the other end of pedestal 20 links to each other with first switch block 21, and second switch block 22 links to each other with first switch block 21, and target seeker 23 is fixedlyed connected with second switch block 22.

First switch block 21 is that the half round post that the axis of cylinder gets is passed on a plane, first switch block 21 has a rectangle end face 211, pedestal 20 is provided with the half-cylindrical identical semicolumn groove 201 with first switch block 21, first switch block 21 is installed in the semicolumn groove 201 of pedestal 20, first switch block 21 can serve as that axle rotates-30 °～+ 30 ° relative to pedestal 30 with the axis of its semicolumn, second switch block 22 is cylindrical, first switch block 21 is provided with and the identical cylindrical groove 212 of second switch block, 22 shapes, second switch block 22 is installed in the cylindrical groove 212 of first switch block 21, second switch block 22 can serve as an axle with respect to first switch block 21 counterclockwise and clockwise rotate 0 °～360 ° with its axis, and air-bubble level is arranged on the upper surface of pedestal 20.Design can guarantee that air-bubble level makes pedestal 20 first maintenance levels like this, first switch block rotates with respect to pedestal, second switch block rotates with respect to first switch block again, and then make the accurate location of seeker in three dimensions in the position guiding device become possibility, and then guarantee the accurate location of puncture needle.In addition, the surface of the pedestal 20 and first switch block 21 is provided with graduated disc 202 and calibration indicator sign 213, and scale range is-30 °～+ 30 °.The cylinder end face of the rectangle end face of first switch block 21 and first switch block 22 is provided with graduated disc 214 and calibration indicator sign 221, and scale range is counterclockwise and 0 °～120 ° of clockwise directions, is convenient to the medical worker and seeker is adjusted to angle and the position of wanting.

23 one-tenth of target seekers are cylindrical, comprise support ring 231, one end of support ring 231 links to each other with seeker 23, the other end of support ring 231 has open slot 232, support ring 231 also is provided with handle 233 at open slot 232 places, support ring 231 is provided with V-type groove 234 with seeker 23 connecting places, is provided with slide block 235 in the support ring 231, and slide block 235 surfaces are useful on the needle tray 236 that puncture needle passes through.

Slide block 235 can be changed according to the diameter of puncture needle is different, as shown in Figure 2, slide block 235 show write 3.0 for the diameter of puncture needle be 3.0mm.Be used to install the large-scale difference of notch bore of needle tray 236 of the puncture needle of different-diameter, the diameter of needle tray 236 is 0.4-10mm, can change as required.Using press...withes one's finger behind the puncture needle stop handle 233 and rotate to the direction of V-type groove 234, support ring 23 can be in the fractures of V-type groove 234 places, thereby reach disposable purpose.

Support ring 231 is provided with plane of orientation 237 and position line 238, and plane of orientation 237 is parallel with the rectangle end face of first switch block 21.Plane of orientation 237 is also parallel with needle tray 236, and whether plane of orientation 237 can check puncture needle location accurate, show accurate positioning if the position line of the laser positioning line that CT gets during use and plane of orientation 237 238 is parallel, otherwise the location is inaccurate.

Position guiding device 2 is provided with latch 24 with support bar 11 junctions, and the plastics protective jacket is arranged outside the support bar 11.Latch 24 can sealing and fixing plastics protective jacket, thereby makes support bar 11 not contaminated.

Concrete using method: the needle body supporting bracket 1 of puncture needle guider is placed on the operating board, and patient's body is pressed on the base 12, and support bar 11 is fixed on the base 12.The plastics protective jacket of position guiding device 2 is inserted in support bar 11.The slide block 235 of the needle tray 236 that suitable this puncture needle of insertion passes in support ring 231.Regulate support bar 11 and position guiding device 2, make the bubble of air-bubble level be positioned at the center of level indicator, guarantee that pedestal 20 is in level, rotate first switch block 21 by target seeker 23, and then rotate second switch block 22, up to seeker 23 being adjusted to the angle that needs.In needle tray 236, insert puncture needle.At last, in the time of puncture needle and guider need being dissociated, the handle 233 and rotate of stopping that press...withes one's finger to the direction of V-type groove 234, support ring 231 can be in the fracture of V-type groove 234 places, and puncture needle and guider dissociate.

Embodiment 2

Support bar 11 is the universal connecting rod of ball-and-socket hinge style in this enforcement, and concrete structure is seen Fig. 6,7, and puncture needle guider remainder is all identical with embodiment 1.In order to represent that clearly the universal connecting rod of ball-and-socket hinge style centre is hollow and is installed with steel wire 111, so ball pivot joint of only having drawn the universal connecting rod of part ball-and-socket hinge style, the connecting rod of base 12 junctions of universal connecting rod of ball-and-socket hinge style and needle body supporting bracket is provided with screw thread and nut, universal connecting rod of ball-and-socket hinge style and needle body supporting bracket 1 junction also are provided with the slideway 112 that runs through support bar 11, be provided with pole 113 in the slideway 112, pole 113 links to each other with an end of steel wire 111, and the other end of steel wire 111 links to each other with the junction of position guiding device 2 by the universal connecting rod of ball-and-socket hinge style.After position guiding device 2 was adjusted to the right place, swivel nut 114 made it to push pole 113 downwards, thereby with steel wire 111 tensions, made whole support bar 11 keep stable behind each joint pressurized of the universal connecting rod of ball-and-socket hinge style.

Claims

1. puncture needle guider comprises needle body supporting bracket (1), position guiding device (2), connects the support bar (11) of needle body supporting bracket and position guiding device, and it is characterized in that: position guiding device is provided with air-bubble level (25).

2. puncture needle guider according to claim 1 is characterized in that: air-bubble level (25) is oblate or two-way column.

3. puncture needle guider according to claim 1, it is characterized in that: position guiding device also comprises positioning pedestal (20), first switch block (21) that links to each other with pedestal (20), second switch block (22) that links to each other with first switch block (21), the target seeker (23) of fixedlying connected with second switch block (22).

4. puncture needle guider according to claim 3, it is characterized in that: first switch block (21) is for half-cylindrical, first switch block (21) has a rectangle end face (211), pedestal (20) is provided with the half-cylindrical identical semicolumn groove (201) with first switch block (21), second switch block (22) is cylindrical, and first switch block (21) is provided with the cylindrical groove (212) identical with second switch block (22) shape.

5. puncture needle guider according to claim 4, it is characterized in that: target seeker (23) also comprises support ring (231), one end of support ring (231) links to each other with seeker (23), the other end of support ring (231) has open slot (232), support ring (231) locates also to be provided with handle (233) at open slot (232), support ring (231) is provided with V-type groove (234) with seeker (23) connecting place, be provided with slide block (235) in the support ring (231), slide block (235) surface is useful on the needle tray (236) that puncture needle passes through.

6. puncture needle guider according to claim 5 is characterized in that: support ring (231) is provided with plane of orientation (237), and plane of orientation (237) is parallel with the rectangle end face (211) of first switch block (21).

7. puncture needle guider according to claim 4, it is characterized in that: first switch block (21) can be with respect to pedestal (20) counterclockwise and clockwise rotate 0 °～30 °, pedestal (20) surface is provided with graduated disc, scale range is-30 °～+ 30 °, and first switch block (21) is provided with calibration indicator sign (213).

8. puncture needle guider according to claim 4, it is characterized in that: second switch block (22) can be with respect to first switch block (21) counterclockwise and clockwise rotate 0 °～360 °, the surface of first switch block (21) is provided with graduated disc, scale range is counterclockwise and 0 °～120 ° of clockwise directions, and second switch block (22) is provided with calibration indicator sign (221).

9. puncture needle guider according to claim 1 is characterized in that: position guiding device (2) is provided with latch (24) with support bar (11) junction, and protective jacket is arranged outside the support bar (11).

10. according to any one described puncture needle guider in the claim 1～9, it is characterized in that: support bar (11) is the universal connecting rod of ball-and-socket hinge style, the universal connecting rod of ball-and-socket hinge style centre is hollow and is installed with steel wire (111), the connecting rod of universal connecting rod of ball-and-socket hinge style and base (12) junction is provided with screw thread and nut, universal connecting rod of ball-and-socket hinge style and needle body supporting bracket (1) junction also are provided with the slideway (112) that runs through support bar (11), be provided with pole (113) in the slideway (112), pole (113) links to each other with an end of steel wire (111), and the other end of steel wire (111) links to each other with the junction of the universal connecting rod of ball-and-socket hinge style with position guiding device (2).