CN219397307U

CN219397307U - Lung shadow positioning device under CT guidance

Info

Publication number: CN219397307U
Application number: CN202222603711.0U
Authority: CN
Inventors: 杨光; 樊景利; 刘会宁; 王文豪; 徐四维; 李文兵
Original assignee: FIRST HOSPITAL OF HEBEI MEDICAL UNIVERSITY
Current assignee: FIRST HOSPITAL OF HEBEI MEDICAL UNIVERSITY
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-07-25
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a lung shadow positioning device under CT guidance, which belongs to the technical field of medical appliances and comprises a rectangular base surrounded by metal wires, a positioning line, a measuring ruler, a protractor and a transparent plastic block provided with a puncture point groove. The protractor is provided with a chute, and the transparent plastic block is adjusted to form a specific needle inserting angle with the skin by utilizing the chute. The puncture point groove is utilized, so that the needle insertion is stable and convenient. The utility model realizes quantitative and controllable needle insertion angle, does not depend on experience and manipulation, greatly improves the accuracy of the needle insertion angle, improves the stability, weakens the influence of respiration on the position where the needle insertion is easy to move, and reduces the operation risk and the operation difficulty.

Description

Lung shadow positioning device under CT guidance

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a lung shadow positioning device under CT guidance.

Background

With the continuous deterioration of the modern atmospheric environment and the remarkable improvement of the number of smokers, the occurrence of lung diseases is increasingly advanced, and in order to cope with the treatment of various lung diseases, lung puncture and mediastinum pathological tissue puncture biopsy are widely used clinically to assist diagnosis or treatment. Conventional CT guided percutaneous pulmonary aspiration is performed by CT scanning to determine the location of a lesion. An integral surface marker (steel wire or puncture positioning paper which can be developed under X-rays) is usually placed on the body surface of a patient, the relation between a focus and the body surface marker is determined according to a CT image, and a proper puncture positioning point is found. And (3) determining the layer surface where the puncture is positioned by using CT positioning laser, and determining the position of the puncture point and the needle inserting depth by combining body surface markers. The operator then uses the puncture needle or positioning needle to perform puncture or pulmonary nodule positioning at the puncture site. The puncture mode needs to be operated by bare hands of medical staff, the puncture depth of the needle insertion angle completely depends on the medical experience and technical method accumulated by the operator all the year round, the dependence on the experience and operation level of the medical staff is extremely high, and the puncture mode is extremely unfriendly to new doctors. The needle inserting angle and direction cannot be accurately controlled, deviation is easy to occur after the puncture needle enters the chest cavity, the puncture needle is easy to be affected by breathing and swings along with breathing after penetrating into the lung, deviation is easy to be caused, angle adjustment is needed for many times, operation time is long, and risks are increased.

Along with the development of modern medical treatment, the excessive dependence on experience is gradually reduced, and a positioning device which can be easily mastered by even beginners, has good stability after a puncture needle penetrates into lung tissues, is not affected by respiration to change the position, is accurate in puncture, reduces the auxiliary damage caused by the swing of the puncture needle, reduces the puncture operation time and reduces the operation risk is needed.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the lung shadow positioning device under CT guidance so that a beginner can easily grasp the device, the accurate determination of the needle inserting direction and angle is realized, the stability is good after the puncture needle enters lung tissues, the position is not changed due to the influence of respiration, and the operation is successfully realized.

In order to solve the technical problems, the utility model adopts the following technical scheme: a lung shadow positioning device under CT guidance, characterized in that: the skin sucking ball is arranged at four vertexes of the metal wire rectangle;

a positioning line capable of translating left and right is arranged in the vertical direction of the metal wire rectangle, and a measuring ruler capable of translating up and down and a metal wire line A and a metal wire line B which are arranged on two sides of the measuring ruler and parallel to the measuring ruler and capable of translating up and down are arranged in the horizontal direction of the metal wire rectangle;

two protractors with the same size are respectively and movably arranged on the wire A line and the wire B line, the two protractors are vertically arranged on the skin surface of a patient, the positions of the two protractors are always opposite, a long-strip-shaped transparent plastic block capable of rotating by taking the circle center of the protractor as a rotating point is arranged between the two protractors, and a puncture point groove for accommodating a puncture needle to pass is formed in the transparent plastic block.

The technical scheme of the utility model is further improved as follows: the middle of the transparent plastic block can be disconnected, the other ends of the two disconnected parts are respectively connected to the two protractors, one end of the disconnected end is provided with a convex plug, and the other end of the disconnected end is provided with a concave hole matched with the convex plug.

The technical scheme of the utility model is further improved as follows: the positioning wire is made of copper wires, the measuring ruler is made of plastic transparent soft plastic, and the measuring ruler is marked with a ruler marked with centimeters and millimeters.

The technical scheme of the utility model is further improved as follows: the bottom ends of the two protractors are respectively provided with a vertical catheter with hollow inside, the diameter of the catheter is the same as the thickness of the protractors, the two protractors are fixedly connected along the lower edge of the protractors, the wire A line and the wire B line respectively penetrate through the inside of the catheter under the corresponding protractors, the bottom ends of the catheter under the two protractors are respectively provided with a skin suction ball used for being fixed with skin, and a ball body on the upper part of the skin suction ball is fixedly connected with the catheter.

The technical scheme of the utility model is further improved as follows: the angle gauge is characterized in that a circle of arc-shaped sliding grooves with the central angle of 180 degrees are hollowed out on the surface of the main body of the angle gauge, the sliding grooves are completely parallel to the arc of the upper edge of the angle gauge, a degree scale is marked on the sliding grooves, two pins are arranged at the connecting end of the transparent plastic block, which is in contact with the angle gauge, one pin is fixed on the central position of the angle gauge through a screw, and the other pin is arranged in the arc-shaped sliding grooves through the screw in a sliding mode.

The technical scheme of the utility model is further improved as follows: the thickness of the transparent plastic block is 5mm, the transparent plastic block is divided into two sections, a puncture point groove is formed in the front surface of the section with the protruding plug, a puncture point groove is formed in the back surface of the other section with the concave hole, and the diameter of the puncture point groove is 3mm.

The technical scheme of the utility model is further improved as follows: the positioning device is attached with a matched metal rod with the diameter of 2mm and is used for simulating the position of the puncture needle.

By adopting the technical scheme, the utility model has the following technical progress: by adopting the metal wire and the four skin suction balls as the bottom, the structure is simplified, the skin surface of the patient can be attached to the skin surface to a great extent, and a stable foundation is provided for the accurate needle insertion at the back. Through adopting protractor and plastic piece composite connection, make the plastic piece can carry out angle modulation on the protractor, make needle insertion angle realize quantization controllable, not just rely on experience and technique, very big improvement needle insertion angle's degree of accuracy, make the beginner also can go up the hand easily. Position determination is carried out by matching a positioning line with a measuring ruler, and positioning is more convenient and accurate. Through adopting the puncture point recess on the plastic piece, make the needle can rely on the recess, follow the recess and come the needle of inserting, improved stability, weakened the respiratory influence to the easy variable position of needle of inserting, reduced the operation risk. In addition, the simulated puncture needle is also arranged in the suit, so that a beginner can determine the puncture position through the simulated puncture needle and then puncture, thereby reducing misoperation and relieving unnecessary pain of a patient.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art;

FIG. 1 is a schematic view of a CT guided lung shadow positioning device;

FIG. 2 is a schematic diagram of the structure of the protractor;

FIG. 3 is a schematic view of the structure of a transparent plastic block;

wherein, 1, a metal wire rectangle, 2, a skin suction ball, 3, a positioning wire, 4, a wire A, 5, a wire B, 6 and a measuring ruler, 7, puncture point grooves, 8, a protractor, 9, a transparent plastic block, 10, a chute, 11 and a catheter.

Detailed Description

The utility model is further illustrated by the following examples:

example 1

As shown in fig. 1, a schematic structure of a lung shadow positioning device under CT guidance is shown, and is used when a patient needs to determine the location of a focus by means of CT scanning. A set of positioning device is provided with a bag of sterilized cotton balls, two forceps, a sterile sheet, a pair of sterile gloves, two pieces of gauze, a sterile bending disc, a sterile marking pen and a 5ml syringe.

When the device is used, a patient is kept in a lying position, after the patient is placed in a body position, the positioning device is placed on the surface of the patient, the skin suction balls 2 at the four vertexes of the metal wire rectangle 1 are tightly adsorbed on the skin of the patient, the skin suction balls 2 can be vacuum suction balls made of silica gel, the upper parts of the vacuum suction balls are balls, the lower parts of the vacuum suction balls are sucking discs, the interiors of the balls are communicated with the sucking discs, air inlets are formed in the bottoms of the sucking discs, boss fixing parts are formed in the tops of the balls, and matched holes penetrating through the metal wires are formed in the boss fixing parts so as to keep the stability of the whole device. The positioning wires 3 which can freely move left and right are arranged in the up-down direction of the metal wire rectangle 1, the positioning wires 3 are made of copper wires, and two ends of the positioning wires 3 can be connected with the metal wire rectangle 1 in a winding or movable buckling mode. The measuring ruler 6 capable of freely moving up and down is arranged in the left-right direction, the measuring ruler 6 is made of plastic transparent soft plastic, PVC can be specifically selected for use, and the measuring ruler 6 is connected to the metal wire rectangle 1 in a winding or perforation mode. The measuring ruler is provided with a ruler marked by centimeters and millimeters. When the skin suction ball 2 is placed, the positioning line 3 is ensured to be parallel to the spine shape moving direction of the patient, and the measuring ruler 6 is vertical to the spine shape moving direction. The positioning line 3 is adjusted to be near a puncture point which is pre-judged in advance, CT scanning is carried out, a puncture plane is determined through the cross section where a focus is located after CT scanning, a positioning laser line of a CT machine is opened, the measuring ruler 6 is moved to the laser line level, the distance from the positioning line 3 to the body surface puncture point is marked through scales on the measuring ruler 6, and therefore the position where the puncture point is located is determined, and the puncture point is marked by a sterile marker pen.

The metal wire rectangle 1 is provided with two metal wires A line 4 and B line 5 which are parallel to the measuring scale 6 and can freely move up and down, the A line 4 and the B line 5 are respectively arranged on two sides of the measuring scale 6, two protractors 8 with the same size are respectively movably arranged on the metal wires A line 4 and the B line 5, as shown in figure 2, the bottom ends of the two protractors 8 are both provided with horizontal guide pipes 11, the guide pipes 11 are made of transparent plastic materials, the diameter is the same as the thickness of the protractors 8, the length is the same as the length of the lower edge of the protractors 8, and the lower edges of the protractors 8 are fixedly connected. Wires a and B pass through the inside of the catheter 11 under the corresponding protractor 8, respectively, and the protractor 8 can move freely in the directions of the wires a 4 and B5. The bottom ends of the guide pipes 11 under the two protractors 8 are respectively provided with a skin suction ball 2, the skin suction balls 2 are vacuum suction balls of silica gel, the upper parts of the vacuum suction balls are spheres, the lower parts of the vacuum suction balls are suckers, the tops of the spheres are provided with boss fixing parts, and the boss fixing parts are fixedly connected with the guide pipes 11. After the position is determined, the skin suction ball 2 under the protractor 8 can be connected to the skin of a patient in an adsorption manner, so that the fixation is realized.

When the two protractors 8 move on the line A4 and the line B5, the positions are always kept opposite, a strip-shaped transparent plastic block 9 is arranged between the two protractors 8, the connecting structure of the protractors 8 and the transparent plastic block is as shown in figure 2, a circle of circular arc-shaped chute 10 with a central angle of 180 degrees is hollowed out on the surface of the main body of the protractor 8, the center of the chute 10 coincides with the center of the protractor, namely, the chute 10 is completely parallel to the circular arc at the upper edge of the protractor 8, and a degree scale is marked on the chute 10. As shown in fig. 3, the connecting end of the transparent plastic block 9, which is in contact with the protractor 8, is two pins, one pin is fixed on the center of the protractor 8 by a screw, the other pin is connected in the arc chute 10 by the screw in a sliding and penetrating manner, when the screw is loosened, the pin can slide in the chute 10 freely, so as to drive the rotation angle of the transparent plastic block 9, and when the rotation angle is determined, the screw in the chute 10 is locked, so that the fixation of the transparent plastic block 9 is completed.

The thickness of the transparent plastic block 9 is 5mm, the structure is shown in fig. 3, the middle of the transparent plastic block can be disconnected, the disconnected end is a protruding plug, and the other end of the disconnected end is a concave hole matched with the protruding plug. After the transparent plastic block 9 is disconnected, the moving range of the metal wire A line 4 and the metal wire B line 5 is greatly increased, so that the moving range of the measuring ruler 6 between the metal wire A line 4 and the metal wire B line 5 is greatly increased, the movable range is enlarged, the pre-judging requirement on the position of a nodule is reduced, the measuring ruler 6 can move randomly after the transparent plastic block is disconnected, a puncture plane can be conveniently determined, then a puncture point is determined through measurement, then the puncture point groove 7 is placed at the puncture point, the angle is adjusted, and the puncture is completed. The situation that a beginner cannot accurately judge the approximate position and blindly place the measuring ruler 6 is avoided.

The transparent plastic block 9 can be divided into two sections by the disconnection, as shown in the structure of fig. 3, the front surface of the transparent plastic block 9 with the protruding plug is provided with a puncture point groove 7, the back surface of the transparent plastic block 9 with the concave hole is provided with a puncture point groove 7, the puncture point groove is in a concave circular arc shape, the diameter of the puncture point groove is 3mm, and the puncture point groove is attached to the outline of the outer wall of the puncture equipment. When the position of a part which is difficult to adjust a plane, such as a position close to a mammary gland, needs to be punctured, and the transparent plastic block 9 is inconvenient to splice for positioning puncture, the protractor 8 and the transparent plastic block 9 at one end can be used for positioning, so that the operation is convenient. The two sections of transparent plastic blocks 9 are respectively provided with puncture point grooves 7 at the front and back positions, so that the puncture point grooves 7 in which direction can be selected according to requirements, and then the angle is adjusted to ensure that the puncture needle punctures along the grooves.

When the angle gauge is used for splicing, the transparent plastic block 9 perpendicular to the angle gauge 8 is subjected to two-section splicing by adjusting the line A4 and the line B5. Then the position of the transparent plastic block 9 is moved, so that the puncture point groove 7 of the transparent plastic block 9 is ensured to be placed on the puncture point marked by the sterile marker. And determining the needle inserting angle in actual operation according to the needle inserting angle displayed by calculation on the CT instrument. By sliding the pins of the transparent plastic block 9 in the slide grooves 10 of the protractor 8, the pins are observed corresponding to the degree scales on the protractor 8, so as to adjust the transparent plastic block 9 to form a specific calculated angle with the skin.

The metal rod with the diameter of 2mm matched with the puncture needle is placed into the puncture point groove 7, then CT scanning is carried out, whether the puncture point position and the simulated puncture direction are proper or not is further determined, the metal rod is taken down after the puncture point position and the puncture direction are determined to be correct, the puncture needle is conventionally sterilized, the puncture needle is punctured into the puncture point along the puncture point groove 7, and the puncture needle is punctured into the skin until the puncture operation is completed at the target position.

The utility model has the advantages of accurate puncture, auxiliary injury avoidance, good stability, low manufacturing cost and shortened puncture time, can be used for puncture positioning before lung nodule operation, lung tissue puncture biopsy, has wide application range, is easy to grasp by a user, can guide a puncture needle to puncture quickly and accurately by a beginner, reduces operation time, reduces operation risk, reduces labor intensity of medical staff, and is beneficial to early recovery of patients.

The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.

Claims

1. A lung shadow positioning device under CT guidance, characterized in that: the skin suction device comprises a base which is arranged at the bottom and is used for being fixed on the surface of the skin of a patient, wherein the base is a rectangle surrounded by metal wires, and four vertexes of the metal wire rectangle (1) are provided with skin suction balls (2);

a positioning line (3) capable of translating left and right is arranged in the up-down direction of the metal wire rectangle (1), a measuring ruler (6) capable of translating up and down and metal wire A lines (4) and B lines (5) which are arranged on two sides of the measuring ruler and parallel to the measuring ruler (6) and capable of translating up and down are arranged in the left-right direction of the metal wire rectangle (1);

two protractors (8) with the same size are respectively and movably arranged on the wire A line (4) and the wire B line (5), and the two protractors (8) are vertically arranged on the surface of the skin of a patient; a strip-shaped transparent plastic block (9) which rotates by taking the circle center of the protractor as a rotation point is arranged between the two protractors (8), and a puncture point groove (7) for accommodating a puncture needle to pass through is arranged on the transparent plastic block (9).

2. A CT guided lung shadow positioning device according to claim 1, wherein: the middle of the transparent plastic block (9) can be disconnected, the other ends of the two disconnected parts are respectively connected to the two protractors (8), one end of the disconnected end is provided with a convex plug, and the other end of the disconnected end is provided with a concave hole matched with the convex plug.

3. A CT guided lung shadow positioning device according to claim 1, wherein: the positioning line (3) is made of copper wires, the measuring ruler (6) is made of plastic transparent soft plastic, and a ruler marked by centimeters and millimeters is arranged on the measuring ruler (6).

4. A CT guided lung shadow positioning device according to claim 1, wherein: the bottom ends of the two protractors (8) are respectively provided with a horizontal conduit (11) with hollow inside, the diameter of the conduit (11) is the same as the thickness of the protractors (8), the two protractors are fixedly connected along the lower edge of the protractors (8), the metal wire A line (4) and the metal wire B line (5) respectively penetrate through the inside of the guide pipe (11) under the corresponding protractors (8), the bottom ends of the guide pipes (11) under the two protractors (8) are respectively provided with a skin suction ball (2) which is used for being fixed with the skin, and the ball body at the upper part of the skin suction ball (2) is fixedly connected with the guide pipe (11).

5. A CT guided lung shadow positioning device according to any one of claims 1 to 4, wherein: the angle gauge is characterized in that a circle of arc-shaped sliding groove (10) with a central angle of 180 degrees is hollowed out on the surface of the main body of the angle gauge, the sliding groove (10) is completely parallel to the arc of the upper edge of the angle gauge, a degree scale is marked on the sliding groove (10), two pins are arranged at the connecting end of the transparent plastic block (9) in contact with the angle gauge (8), one pin is fixed on the central position of the angle gauge (8) through a screw, and the other pin is arranged in the arc-shaped sliding groove (10) through the screw in a sliding mode.

6. A CT guided lung shadow positioning device according to claim 2, wherein: the thickness of the transparent plastic block (9) is 5mm, the transparent plastic block (9) is divided into two sections, a section of front surface with a protruding plug is provided with a puncture point groove (7), the back of the section with a concave hole is provided with a puncture point groove (7), and the diameters of the puncture point grooves (7) are all 3mm.

7. The CT guided lung shadow positioning device of claim 6, wherein: the positioning device is attached with a matched metal rod with the diameter of 2mm and is used for simulating the position of the puncture needle.