CN211658289U

CN211658289U - Puncture positioner under CT guide

Info

Publication number: CN211658289U
Application number: CN201922337234.6U
Authority: CN
Inventors: 梁冰花; 孙建伟
Original assignee: Xuzhou Cancer Hospital
Current assignee: Xuzhou Cancer Hospital
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-10-13
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses a puncture positioner under CT guide, including locator, needle insertion direction director and fixed band, the locator includes locator chassis and slide bar, the locator chassis is square frame column structure, and the frame in-connection of square frame is equipped with diagonal frame, utilizes two right-angle sides of isosceles triangle to equal and calculates the target position, the protruding first slip track that is provided with of a pair of frame upper surface of square frame, the slide bar includes the body of rod, the both ends of the body of rod all are provided with first slider, first sliding tray has been seted up to first slider bottom, the slide bar is on the first slip track on locator chassis through the first sliding tray sliding connection of first slider. The puncture positioning device under the CT guidance has the capabilities of shortening the puncture time and improving the puncture accuracy, and can reduce puncture complications such as pneumothorax and the like caused by lung puncture.

Description

Puncture positioner under CT guide

Technical Field

The utility model belongs to the technical field of medical equipment, concretely relates to puncture positioner under CT guide.

Background

The clinical examination with common instruments such as B-ultrasonic, CT, nuclear magnetic, etc. reflects the pathological image into the computer through ultrasonic wave, X-ray, magnetic field signal, etc. and processes the digital image with the computer to obtain the tumor information, which is called indirect image. The nature of the tumor can also be judged by assaying for substances secreted by the tumor tissue. However, these tests can only make clinical diagnoses. Finally, the nature of the lesion is determined, and the final diagnosis of the lesion is determined by obtaining the tissue of the lesion, carrying out pathological section, finding the cells of the lesion under a microscope and distinguishing the types. Clinical diagnosis has many defects in the aspects of guiding treatment, judging prognosis and the like, and pathological diagnosis is favorable for accurate diagnosis, guiding treatment and judging prognosis. Because the needle biopsy has less material taking amount, the experience is insufficient or the material taking part is improper, so that the non-penetrated tumor area obtains representative tumor tissue, and an accurate conclusion or even an incorrect conclusion is difficult to be drawn. At present, although the puncture body surface positioning under CT is widely applied to clinical examination and treatment, the positioning accuracy in the operation process is still difficult to grasp, and deviation is easy to occur [4 ]. The development of the puncture positioning device can shorten the puncture time, improve the puncture accuracy and reduce the puncture complications such as pneumothorax and the like caused by lung puncture.

The current puncture work is generally operated by an experienced clinician, but often needs to be adjusted for many times in cooperation with CT scanning, and even ideal tissues can not be obtained. Therefore, there is a need for a device to improve the speed and accuracy of puncturing. The research of the puncture positioning device can accurately position the focus for a clinician and guide the needle inserting direction of the puncture needle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a CT guides down puncture positioner to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a CT-guided puncture positioning device comprises a positioner, a puncture guiding direction guider and a fixing band, wherein the positioner comprises a positioner chassis and a slide bar, the positioner chassis is of a square frame-shaped structure, a diagonal frame is connected in a frame of the square frame, two right-angle sides of an isosceles triangle are equal to measure and calculate a target position, a first sliding track is arranged on the upper surfaces of a pair of frames of the square frame in a protruding mode, the slide bar comprises a bar body, first slide blocks are arranged at two ends of the bar body, a first sliding groove is formed in the bottom of each first slide block, the slide bars are connected to the first sliding track of the positioner chassis in a sliding mode through the first sliding grooves of the first slide blocks, the puncture guiding direction guider comprises a second slide block and a puncture guiding rotation positioning seat, threaded holes are formed in the top end and the side wall of the second slide block, and the puncture guiding rotation positioning seat is fixed in the threaded holes in the side wall of the second slide block, the second sliding block is sleeved on the rod body of the sliding rod in a sliding mode.

Preferably, the locator chassis is formed by medical plastics in one step, through holes are dug in each frame, all the through holes are communicated with each other, and contrast agents are filled in the through holes.

Preferably, the upper surface of the rod body of the sliding rod is dug to be provided with a fixing groove, the top of the first sliding block is provided with a threaded hole, and a screwed nut is connected with the threaded hole in a threaded manner.

Preferably, scale marks are marked on the upper surfaces of the square frame, the diagonal frame and the rod body along the edge positions.

Preferably, the bottom end of a screwing nut in a threaded hole at the top of the second sliding block is inserted into a fixing groove on the upper surface of the rod body.

Preferably, the puncture guide rotary positioning seat consists of a transparent protractor, an inner side angle fixing plate, a guide column body and a puncture needle guide tube; the utility model discloses a guide post, including the guide post body, puncture needle guiding tube, inboard angle fixed plate, transparent protractor, the arc wall is equipped with between inboard angle fixed plate and the transparent protractor, and the nut of screwing is arranged in the arc wall, the guide post body is hollow tubular structure, and the puncture needle guiding tube inserts to be fixed in the guide post body, inboard angle fixed plate lateral wall and guide post body lateral wall fixed connection.

Preferably, the fixing belts are fixedly connected to two ends of the positioner, and when the fixing belts are unfolded and spread flatly, the long edges of the fixing belts are parallel to the long axis of the sliding rod.

The utility model discloses a technological effect and advantage: the CT-guided lower puncture positioning device has the advantages that the simple isosceles triangle with two right-angle sides equal is arranged to measure and calculate the target position, the complex three-dimensional position is positioned, the CT-guided lower puncture positioning device has the capability of shortening puncture time and improving puncture accuracy, and meanwhile puncture complications such as pneumothorax and the like caused by lung puncture can be reduced.

Firstly, the puncture positioning and guiding device realizes the positioning of a complex three-dimensional position by utilizing a simple plane geometry principle: the property that the distance from any point on the diagonal of the square to the two sides of the square is equal is utilized to position the cross-sectional position of the pre-puncture; the direction guide of the puncture needle is realized by utilizing the principle of two-point alignment; the fixed distance between the two points is used to determine the depth of the puncture sample.

Secondly, the puncture positioning and guiding device utilizes the penetration characteristic of X-rays to select proper manufacturing materials. On the premise of ensuring clear positioning, the influence on the image quality is reduced as much as possible so as to accurately and clearly select the puncture position.

Thirdly, the puncture positioning guide device realizes the relative fixation of the position of the puncture positioning device and the position of the puncture point by utilizing the static friction force, thereby ensuring the accurate puncture.

Compared with the prior art that the puncture is performed only by CT images blindly, the device is simple and convenient to operate in the using process, the success rate of one-time puncture is high, the CT scanning times are reduced, the pain of a patient is relieved, and the X-ray absorption dose of the patient is also reduced. The wide use of the puncture positioning device has great promoting effect on the diagnosis and treatment level of pathological diagnosis of pathological tissues obtained by puncture in thoracic surgery, tumor interventional department and the like. Meanwhile, doctors in the pathology department can obtain better samples to provide more accurate pathological diagnosis results for clinical departments. The improvement of the diagnosis level certainly promotes the medical level to be greatly improved, and better guarantees are brought to the healthy life of common people.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the locator base plate of the present invention;

FIG. 3 is a schematic view of the slide bar structure of the present invention;

FIG. 4 is a schematic view of the needle insertion direction guide of the present invention;

fig. 5 is a schematic structural view of a second slide block of the present invention;

fig. 6 is a schematic view of the structure of the puncture guiding rotation positioning seat of the present invention.

In the figure: the puncture needle comprises a locator 1, a locator chassis 11, a square frame 111, a 1111 through hole, a diagonal frame 112, a first sliding track 113, a sliding rod 12, a rod body 121, a 1211 fixing groove, a first sliding block 122, a first sliding groove 1221, a rotating shaft 123, a 2-needle insertion direction guider, a second sliding block 21, a 22-puncture guide rotary positioning seat, a 221 transparent protractor, an 222-inner-side angle fixing plate, a 223-guide column body, a 224-puncture needle guide tube, a 4-threaded hole and a 5-screwed nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a CT-guided puncture positioning device as shown in figures 1-6, which comprises a positioner 1, a puncture direction guide 2 and a fixing band, wherein the positioner 1 comprises a positioner chassis 11 and a slide bar 12, the positioner chassis 11 is a square frame-shaped structure, a diagonal frame 112 is connected in a frame of the square frame 111, two right-angle sides of an isosceles triangle are used for measuring and calculating a target position, a first sliding track 113 is convexly arranged on the upper surfaces of a pair of frames of the square frame 111, the slide bar 12 comprises a bar body 121, first sliding blocks 122 are arranged at two ends of the bar body 121, a first sliding groove 1221 is arranged at the bottom of the first sliding block 122, the slide bar 12 is connected on the first sliding track 113 of the positioner chassis 11 in a sliding way through the first sliding groove 1221 of the first sliding block 122, the puncture direction guide 2 is composed of a second sliding block 21 and a puncture-guided rotary positioning seat 22, the top end and the side wall of the second sliding block 21 are both provided with threaded holes 4, the puncture guiding rotary positioning seat 22 is fixed in the threaded holes 4 of the side wall of the second sliding block 21 through screwing nuts 5, and the second sliding block 21 is sleeved on the rod body 121 of the sliding rod 12 in a sliding manner. Specifically, the first slider 122 is connected to the rod 121 through the rotation shaft 123.

Specifically, locator chassis 11 is by medical plastics one shot forming, and the inside through-hole 1111 that digs of every frame is equipped with, and all through-holes 1111 intercommunication each other, and the through-hole 1111 intussuseption is filled with the contrast medium, and the lead wire can be selected to the contrast medium.

Specifically, a fixing groove 1211 is dug in the upper surface of the rod body 121 of the sliding rod 12, a threaded hole 4 is formed in the top of the first sliding block 122, a screwing nut 5 is connected to the threaded hole 4 through a thread, and the first sliding block 122 can be freely adjusted and fixed at any position on the first sliding track 113 by screwing the nut 5.

Specifically, scale marks are marked on the upper surfaces of the square frame 111, the diagonal frame 112 and the rod body 121 along the edge positions, and the precision of the scale marks reaches the millimeter level.

Specifically, the bottom end of the screwing nut 5 in the threaded hole 4 at the top of the second slider 21 is inserted into the fixing groove 1211 on the upper surface of the rod body 121, and the screwing nut 5 is inserted into the fixing groove and is not in contact with the scale marks on the rod body, so that the scale marks can be prevented from being abraded.

The puncture guiding rotation positioning seat 22 specifically comprises a transparent protractor 221, an inner side angle fixing plate 222, a guiding column body 223 and a puncture needle guiding tube 224; the inner side angle fixing plate 222 is semicircular, the transparent protractor 221 is semicircular and is supported by a transparent material, an arc-shaped groove 50 is formed between the inner side angle fixing plate 222 and the transparent protractor 221, and the screwing nut 5 is arranged in the arc-shaped groove 50. The guide column body 223 is a hollow tubular structure, the puncture needle guide tube 224 is inserted and fixed in the guide column body 223, and the side wall of the inner side angle fixing plate 222 is fixedly connected with the side wall of the guide column body 223.

Specifically, fixed band fixed connection is at the both ends of locator 1, and when the fixed band untied the tie, the long limit of fixed band was parallel with slide bar 12 major axis, and the fixed band chooses for use elasticity cloth and the one end that the fixed band is not connected with locator 3 to be equipped with the magic subsides.

Specifically, the puncture positioning device under the guidance of the CT covers the fixing device of the puncture positioner above the pre-puncture position of the human body, is tightly attached to the body of the patient, tightly surrounds the body of the patient by the fixing band, is connected and locked to complete the fixation of the positioner 1, can also correspondingly reduce the breathing and other movements of the patient, and ensures that the whole positioner 1 is relatively fixed with the body of the patient. According to the characteristics of a square, a diagonal line divides the square into 2 isosceles right triangles, 3 marking points can be displayed when the square is cut and imaged by a CT (computed tomography), a layer surface needing puncture is selected, the distance between a middle point (a transverse breaking point of the diagonal line of the square on the CT) and any point on two sides (a transverse breaking point of the two sides of the square on the CT) is measured in a CT image, a corresponding position can be found on a positioner, the position is the cross section position of puncture, and a positioner sliding rod slides to the position and is fixed. After the cross section position of the puncture point is determined, a pre-puncture point is selected on a CT image, the parallel distance from the pre-puncture point to an outer side mark point is measured, the needle inserting direction guider 2 is moved to a corresponding scale of the slide rod 12, namely, the pre-puncture point is reached, one end of the puncture guiding rotary positioning seat 22 close to the skin side is placed at the puncture point of the pre-inserted needle, an end point of the near skin side is fixed, then the angle of the puncture guiding rotary positioning seat 22 is adjusted according to the measured angle on the CT image, so that the angle close to puncture is determined, the angle of the puncture guiding rotary positioning seat 22 can be verified and adjusted again under the cooperation of the CT image, the connecting lines of the mark points at the two ends of the puncture guiding rotary positioning seat 22 and the focus sampling point are on the same straight line, then the puncture guiding rotary positioning seat 22 is fixed, the fixing of each position is ensured. Then the distance from the sampling point to the marking point of the guiding device is measured in the CT image, and the depth of the needle to be inserted can be determined. The sampling needle enters along the aperture of the guiding device, and the focus sample can be accurately obtained by reading the scale of the sampling needle.

The device realizes the positioning of a complex three-dimensional position by utilizing a simple plane geometry principle. The puncture positioning device comprises a positioner, a fixing device, a puncture needle inserting direction guiding device and the like. The puncture positioning device is designed by adopting a developing and difficult-deformation material to manufacture the positioner and the puncture needle direction guiding device and adopting an elastic and easy-deformation material to manufacture the fixing device. A large number of simulation experiment results show that the puncture time, the needle insertion times and the CT scanning times are obviously less than those of the traditional puncture method. The success rate of one-time puncture is as high as 90 percent. The puncture positioning device can accurately position the focus and guide the needle inserting direction of the puncture needle, thereby reducing the probability of puncture failure and relieving the pain of patients.

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 and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a puncture positioner under CT guide, includes locator (1), needle insertion direction director (2) and fixed band, locator (1) includes locator chassis (11) and slide bar (12), its characterized in that: the locator chassis (11) is of a square frame-shaped structure, diagonal frames (112) are connected in a frame of the square frame (111), two right-angle sides of an isosceles triangle are equal to measure and calculate a target position, a first sliding track (113) is convexly arranged on the upper surfaces of a pair of frames of the square frame (111), the sliding rod (12) comprises a rod body (121), first sliding blocks (122) are arranged at two ends of the rod body (121), a first sliding groove (1221) is formed in the bottom of each first sliding block (122), the sliding rod (12) is slidably connected to the first sliding track (113) of the locator chassis (11) through the first sliding groove (1221) of each first sliding block (122), the needle feeding direction guider (2) is composed of a second sliding block (21) and a puncture guiding rotary positioning seat (22), and threaded holes (4) are formed in the top end and the side wall of the second sliding block (21), the puncture guiding rotary positioning seat (22) is fixed in a threaded hole (4) of the side wall of the second sliding block (21) through a screwed nut (5) in a threaded manner, and the second sliding block (21) is sleeved on a rod body (121) of the sliding rod (12) in a sliding manner.

2. The CT-guided puncture positioning device of claim 1, wherein: the locator chassis (11) is once-through formed by medical plastics, through-hole (1111) are dug to be equipped with in every frame, and all through-holes (1111) communicate with each other, and through-hole (1111) intussuseption is filled with the contrast medium.

3. The CT-guided puncture positioning device of claim 1, wherein: a fixing groove (1211) is dug in the upper surface of a rod body (121) of the sliding rod (12), a threaded hole (4) is formed in the top of the first sliding block (122), and a screwing nut (5) is connected with the threaded hole (4) in a threaded mode.

4. The CT-guided puncture positioning device of claim 1, wherein: and scale marks are marked on the upper surfaces of the square frame (111), the diagonal frame (112) and the rod body (121) along the edge positions.

5. The CT-guided puncture positioning device of claim 1, wherein: the bottom end of a screwing nut (5) in a threaded hole (4) at the top of the second sliding block (21) is inserted into a fixing groove (1211) on the upper surface of the rod body (121).

6. The CT-guided puncture positioning device of claim 1, wherein: the puncture guide rotary positioning seat (22) consists of a transparent protractor (221), an inner side angle fixing plate (222), a guide column body (223) and a puncture needle guide tube (224); inboard angle fixed plate (222) is semi-circular, and transparent protractor (221) are semi-circular, adopt transparent material to support, are equipped with arc wall (50) between inboard angle fixed plate (222) and transparent protractor (221), and screw nut (5) are arranged in arc wall (50), guide post body (223) are hollow tubular structure, and pjncture needle guiding tube (224) insert to be fixed in guide post body (223), inboard angle fixed plate (222) lateral wall and guide post body (223) lateral wall fixed connection.

7. The CT-guided puncture positioning device of claim 1, wherein: the fixing belts are fixedly connected to two ends of the positioner (1), and when the fixing belts are unfolded and spread flatly, the long edges of the fixing belts are parallel to the long axis of the sliding rod (12).

8. The CT-guided puncture positioning device of claim 1, wherein: the first sliding block (122) is connected with the rod body (121) through a rotating shaft (123).