CN209966513U

CN209966513U - CT guide puncture positioning device

Info

Publication number: CN209966513U
Application number: CN201920363335.8U
Authority: CN
Inventors: 罗瑞康; 谢万利; 成鹏
Original assignee: Jianghan University
Current assignee: Jianghan University
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-01-21
Anticipated expiration: 2029-03-21

Abstract

The utility model relates to a CT guide puncture positioning device, and discloses a CT guide puncture positioning device, the device comprises a graduated rod and a rubber fixing ring, wherein the upper surface of the rubber fixing ring is fixedly bonded with the lower surface of a sliding rail, the lower surface of the right side of the graduated rod is fixedly connected with a telescopic metal rod, the lower end of the left side of the graduated rod is fixedly connected with a bottom plate, the inner cavity of the graduated rod is provided with a guide groove, the two sides in the guiding groove are provided with sliding grooves which are internally and slidably clamped with the fixing plate, the device is provided with a telescopic metal rod which can accurately determine the focus position during CT scanning, the device is provided with a roller, a roller frame, a bottom plate, a fixing plate, scales, a slide rail and a scale rod, so that a doctor can stably insert a needle at any angle in the upper half circumference of a focus, the device sets up stop screw and bottom plate, can fix the scale bar position and come the accuracy to go into the needle after confirming into needle angle and position.

Description

CT guide puncture positioning device

Technical Field

The utility model particularly relates to a CT guide puncture positioner belongs to CT guide puncture location technical field.

Background

CT-guided percutaneous aspiration lung biopsy diagnosis lung diseases the puncture under CT guidance has wide application range and the clinical application is the most. CT transverse tomography has good spatial resolution and density resolution, and can accurately display the size, position and internal condition of a focus and the anatomical relationship with surrounding structures such as blood vessels, and the method comprises the steps of firstly performing CT scanning to determine the optimal puncture point, needle insertion depth and angle of the focus, and then performing manual puncture biopsy. The needle inserting condition can not be directly observed under the conventional CT, the needle inserting depth and the needle inserting direction must be estimated after the needle inserting point is determined, and the needle inserting point is scanned again to confirm the feasible puncture biopsy behind the needle inserting point.

At present, most of puncture under CT guidance is operated by bare hands, CT scanning and positioning are carried out for many times in the middle of an operation, the puncture position is limited on a two-dimensional plane, the puncture positioning is not accurate, the operation time is long, and the operation risk is increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a CT guide puncture positioner, possess quick accurate location and confirm advantages such as focus position in three-dimensional space, solved the not accurate not rapid problem in CT guide puncture location, can effectively solve the problem in the background art.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a CT guide puncture positioner, including scale bar, rubber retainer plate, the upper surface fixed of rubber retainer plate bonds the lower surface of slide rail, the flexible metal pole of lower fixed surface connection on scale bar right side, the left lower extreme fixed connection bottom plate of scale bar, the guiding groove is seted up to the inner chamber of scale bar, and the spout is seted up to both sides in this guiding groove, and the slip joint fixed plate slides in this spout, the scale is seted up to scale bar one side, the middle part of bottom plate runs through threaded connection stop screw, the four corners position of bottom plate all runs through the connection gyro wheel frame, the gyro wheel is all connected through the bearing in the bottom of gyro wheel frame, the interior external surface of gyro wheel sliding connection slide rail.

Preferably, the telescopic metal rod is located above the circle center of the sliding rail, and the bottom of the telescopic metal rod and the lower surface of the rubber fixing ring are located on the same horizontal plane.

Preferably, the four roller frames uniformly and symmetrically penetrate through the bottom plate.

Preferably, the upper surface of the graduated rod is marked with angle graduations and is provided with a guide groove, and the central angle of the guide groove is larger than 90 degrees.

Preferably, the length of the screw rod of the limiting screw is greater than the thickness of the bottom plate.

Preferably, the slide rail, the roller, the bottom plate and the scale rod are all made of resin materials.

Preferably, the overlooking length of the scale rod is larger than the radius of the sliding rail, a shallow groove parallel to the scale is formed in the middle of a fixing plate in the scale rod, and a circular hole with the radius identical to that of the needle cylinder is formed in the middle of the fixing plate.

The utility model discloses the beneficial effect who reaches is:

1. the device is provided with the telescopic metal rod, so that the focus position can be accurately determined during CT scanning.

2. The device is provided with a roller, a roller frame, a bottom plate, a fixing plate, scales, a slide rail and a scale rod, so that a doctor can stably insert a needle at any angle in the upper half circumference of a focus.

3. The device sets up stop screw and bottom plate, can fix the scale bar position and come the accuracy to go into the needle after confirming into needle angle and position.

4. The device sets up the rubber retainer plate, increases the adhesion between device and the skin, makes things convenient for stabilising arrangement.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic structural view of the bottom plate of the present invention;

FIG. 3 is a schematic diagram of the fixing plate structure of the present invention;

fig. 4 is a schematic diagram of the novel back structure of the present application.

In the figure: 1. a telescopic metal rod; 2. a slide rail; 3. a rubber retainer ring; 4. a roller; 5. a roller frame; 6. a base plate; 7. a limit screw; 8. a graduated rod; 9. a fixing plate; 10. a guide groove; 11. and (4) calibration.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): referring to fig. 1-4, a CT-guided puncture positioning device includes a graduated rod 8 and a rubber fixing ring 3, wherein the upper surface of the rubber fixing ring 3 is fixedly bonded to the lower surface of a slide rail 2, the lower surface on the right side of the graduated rod 8 is fixedly connected to a telescopic metal rod 1, the lower end on the left side of the graduated rod 8 is fixedly connected to a bottom plate 6, a guide groove 10 is formed in an inner cavity of the graduated rod 8, slide grooves are formed in two sides of the guide groove 10, a fixing plate 9 is slidably clamped in the slide grooves, a scale 11 is formed on one side of the graduated rod 8, the middle of the bottom plate 6 is connected with a limit screw 7 in a penetrating manner, four corners of the bottom plate 6 are connected with a roller frame 5 in a penetrating manner, the bottom of the roller frame 5 is connected with a roller.

The telescopic metal rod 1 is positioned above the circle center of the sliding rail 2, and the bottom of the telescopic metal rod 1 and the lower surface of the rubber fixing ring are positioned on the same horizontal plane, so that a needle inserting point can be conveniently found during CT scanning.

The four roller carriers 5 uniformly and symmetrically penetrate through the bottom plate and can slide on a slide rail 2 at the bottom of the device to search for an angle to enter the needle.

The upper surface of the graduated rod 8 is marked with graduations 11 and is provided with a guide groove 10, the central angle of the guide groove 10 is larger than 90 degrees, all angles above a focus can be covered, and the needle can be conveniently inserted.

The length of the screw rod of the limit screw 7 is larger than the thickness of the bottom plate 6, so that the bottom plate 6 can be fixed on the slide rail 2, and the locking device is convenient to operate next step.

Slide rail 2, gyro wheel 4, bottom plate 6 and scale bar 8 all use resin material to make, when the CT projection, can not cause the hindrance to the location.

The overlooking length of the scale rod 8 is larger than the radius of the slide rail 2, a shallow groove parallel to the scale 11 is arranged in the middle of a fixing plate 9 in the scale rod 8, and a round hole with the same radius as the needle cylinder is arranged in the middle of the fixing plate 9.

The working principle is as follows: the device is placed at the approximate position of a focus of a patient, a telescopic metal rod 1 is stretched to the same horizontal position as a rubber fixing ring 3 and is attached to the skin of the patient, CT scanning is carried out, the position of the device is adjusted for many times, when the position of the telescopic metal rod 1 of the device is vertically overlapped with the optimal needle inserting point of the focus, the vertical position of the focus is determined, the optimal needle inserting angle is determined, the distance between the skin contact point of the telescopic metal rod 1 and the skin contact point of the needle inserting direction extension line is measured, the needle inserting and withdrawing depth is calculated according to a trigonometric function, a graduated rod 8 is rotated to the optimal needle inserting angle position, a limiting screw 7 is screwed until the lower end surface of the limiting screw 7 is contacted with the upper surface of a bottom plate 6, after the device is fixed, a shallow groove of a fixing plate 9 is aligned with the optimal needle inserting angle graduation 11, a needle is inserted into the circular hole of the fixing plate, the syringe is removed, the needle is left behind, and the device is removed for further operation.

In conclusion, the device is provided with the telescopic metal rod 1, so that the focus position can be accurately determined during CT scanning.

The device sets up gyro wheel 4, gyro wheel frame 5, bottom plate 6, fixed plate 9, scale 11, slide rail 2 and scale bar 8, makes the doctor can go into the needle at the top of focus within a half circle arbitrary angle stability, and the device sets up stop screw 7 and bottom plate 6, can come the accuracy to go into the needle in confirming into needle angle and position back fixed scale bar 8 position, and the device sets up rubber retainer plate 3, increases the adhesion between device and the skin, makes things convenient for stabilising arrangement.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A CT guide puncture positioning device is characterized in that: the method comprises the following steps:

the upper surface of the rubber fixing ring (3) is fixedly bonded with the lower surface of the sliding rail (2);

the lower surface of the right side of the scale rod (8) is fixedly connected with the telescopic metal rod (1);

the guide groove (10) is formed in the inner cavity of the scale rod (8), sliding grooves are formed in two sides of the guide groove (10), and the fixing plate (9) is clamped in the sliding grooves in a sliding mode;

bottom plate (6), bottom plate (6) are fixed the left lower extreme of scale bar (8), threaded connection stop screw (7) is run through at the middle part of bottom plate (6), the four corners position of bottom plate (6) all runs through connection gyro wheel frame (5), gyro wheel (4) are all connected through the bearing in the bottom of gyro wheel frame (5), the interior external surface of gyro wheel (4) sliding connection slide rail (2), scale (11) are seted up to scale bar (8) one side.

2. The CT guided puncture positioning device of claim 1, wherein: the telescopic metal rod (1) is located above the circle center of the sliding rail (2), and the bottom of the telescopic metal rod (1) and the lower surface of the rubber fixing ring (3) are located on the same horizontal plane.

3. The CT guided puncture positioning device of claim 1, wherein: the four roller carriers (5) uniformly and symmetrically penetrate through the bottom plate (6).

4. The CT guided puncture positioning device of claim 1, wherein: the upper surface of the scale rod (8) is marked with scales (11) and is provided with a guide groove (10), and the central angle of the guide groove (10) is larger than 90 degrees.

5. The CT guided puncture positioning device of claim 1, wherein: the length of the screw rod of the limiting screw (7) is larger than the thickness of the bottom plate (6).

6. The CT guided puncture positioning device of claim 1, wherein: the slide rail (2), the roller (4), the bottom plate (6) and the scale rod (8) are all made of resin materials.

7. The CT guided puncture positioning device of claim 1, wherein: the overlook length of the scale rod (8) is larger than the radius of the slide rail (2), the middle of a fixing plate (9) in the scale rod (8) is provided with a shallow groove parallel to the scale (11), and the middle of the fixing plate (9) is provided with a round hole with the same radius as the needle cylinder.