CN114601536A - Device and method for locating and accurately inserting needle lesion on lesion body table in lower body of medical image - Google Patents

Abstract

The invention relates to the field of surgical instruments, in particular to a device for locating the body surface of an in vivo lesion under medical imaging and accurately inserting a needle into the lesion. The device comprises: an upper positioning plate, a lower positioning plate and a fitting plate. When in use, it is suitable for fitting on the surface of human skin; the frame body is connected with an upper positioning plate, a lower positioning plate and a fitting plate. The positioning device and the positioning method provided by the present invention can avoid increasing the number of imaging examinations of patients. Without the guidance of ultrasound images, only the workstation of the CT can accurately perform the body surface positioning of various organ lesions, and simultaneously control the biopsy needle and the body surface. Or the treatment needle can accurately penetrate the lesion target, reduce the treatment cost and the pain of the patient, and complete the purpose of minimally invasive and accurate treatment of the patient. The device and technology have the advantages of wide application range and easy learning and mastery. In addition, it also has the advantages of convenient observation and operation, simple structure and light weight.

Description

Device and method for locating the body surface of lesions in vivo under medical imaging and accurately inserting needles into lesions

technical field

The invention relates to the field of surgical instruments, in particular to a device and method for locating the body surface of an in vivo lesion under medical imaging and accurately inserting a needle into the lesion.

Background technique

With the help of advanced medical imaging technology, many internal diseases can be accurately diagnosed and treated. However, when performing operations such as puncture, internal ablation, or minimally invasive surgery, it is usually necessary to use a needle or a needle-like device to pierce the human body, and at this time, the grasp of the puncture angle and position is usually performed by the doctor with bare hands. The bare-hand puncture technique is directly related to the individual experience and technical level of the doctor. In many cases, in order to complete the internal puncture, the patient has to undergo multiple CT examinations. While the patient is experiencing pain, he must also be exposed to excessive doses of radiation; on the other hand, The repeatability and accuracy of freehand puncture will be limited by the doctor's experience and skill level. In some cases, freehand puncture will significantly deviate from the in vivo lesions.

The Chinese invention patent with the announcement number CN206576934U discloses a double-layer dense point CT puncture auxiliary positioning device, including two layers of positioning nets, the positioning net is composed of a frame, a warp, a weft and a positioning hole, and both ends of the warp and weft are connected. On the frame, a positioning hole is provided at the connection between the warp and weft, the outer side of the connection between the warp and the frame is provided with a warp label, and the outer side of the connection between the weft and the frame is provided with a weft label, and also includes a first fixing device. The first fixing device is used to connect the two The positioning nets are fixed between the layers, so that the positioning nets of the upper and lower layers are kept parallel. Using the double-layer dense point CT puncture-aided positioning device, combined with the CT scanning three-dimensional reconstruction technology, the purpose of accurately locating the puncture position and angle can be achieved. And the patent document also discloses the use method of this device: A. The patient is in a prone position, and the medical self-adhesive positioning device 100 is attached to the patient's treatment area, and the double-layer dense-point CT puncture-assisted positioning device of Example 1 is passed through. The fitting hole is fitted and fixed on the protrusion 103 of the medical self-adhesive positioning device 100, and the CT thin-slice scan is performed on the required treatment area of the patient to obtain the scan data; B. Import the scan data into the medical modeling software to establish the lumbar spine or A three-dimensional digital model of the bones in the thoracic spine area, and the target position to be treated is marked; C. According to the three-dimensional digital model, use software to establish the optimal puncture needle track and puncture depth to reach the target position, and the best puncture needle track needs to avoid the path along the way The important blood vessels and nerves are calculated, and the positioning holes of the upper positioning net and the positioning holes of the lower positioning net corresponding to the optimal puncture needle track are calculated; D. Perform puncture according to the calculation results, and the puncture needle first passes through the preset positioning of the upper positioning net The hole is then punctured into the patient's body through the preset positioning hole of the lower positioning net, and the puncture is in place according to the puncture depth measured before surgery.

However, the above devices still have major problems in practical use:

First of all, the above-mentioned device uses two layers of positioning nets to puncture and locate the needle. When the needle passes through the upper positioning net and penetrates into the human body through the lower positioning net, the lower positioning net is close to the skin of the human body. Penetrating the needle tip into an unintended hole can pierce the body and leave a laceration in the skin, which can aggravate the patient's suffering.

Secondly, when the above device is used, it is necessary to first use CT to image and calculate the optimal puncture needle track and the positions of the upper and lower positioning holes corresponding to the needle track. , and the computing power of software puts forward new requirements, which is difficult to achieve under today's technical conditions.

Finally, when using the positioning device described above, the needles are first passed through the upper positioning mesh and then through the lower positioning mesh. When passing through the lower positioning net, it is necessary to observe from the side of the device to ensure that the needle can pass through the predetermined lower positioning hole, which is inconvenient and also has the risk of passing through the wrong lower positioning hole.

SUMMARY OF THE INVENTION

Therefore, the technical problem to be solved by the present invention is to overcome the defect that the device for positioning the puncture needle in the prior art has the risk of increasing the pain of the patient during use, and further provides an in vivo diseased body under medical imaging that can avoid increasing the pain of the patient. A device that locates and accurately inserts needles into lesions.

Another technical problem to be solved by the present invention is to provide a method for positioning a needle inserted into the body by means of medical images, so that the puncture process can avoid increasing the pain of the patient.

In order to solve the above-mentioned first technical problem, the technical scheme provided by the present invention is as follows:

A device for locating the body surface of an in vivo lesion under medical imaging and accurately inserting a needle into the lesion, comprising:

an upper positioning plate, which is provided with a plurality of upper positioning holes suitable for the needles to pass through;

The lower positioning plate is arranged below the upper positioning plate, and the lower positioning plate is provided with a plurality of lower positioning holes suitable for the needles to pass through;

The fitting plate is arranged below the lower positioning plate, and is a ring-shaped arrangement around the circumference of the lower positioning plate, and the lower surface of the fitting plate is suitable for fitting on the surface of human skin during use;

The frame body is connected to the upper positioning plate, the lower positioning plate and the laminating plate, and is suitable for making the upper positioning plate, the lower positioning plate and the laminating plate form a whole.

Optionally, the adhering plate and the lower positioning plate are integrally formed.

Optionally, a plurality of connecting arms extend from the periphery of the adhering plate, the ends of the connecting arms are connected to the lower positioning plate, and the connecting arms are shell-shaped.

Optionally, the upper positioning plate is detachably connected to the frame body.

Optionally, the upper end of the frame body is provided with at least two first positioning and fastening holes, and the upper positioning plate is provided with second positioning and fastening holes corresponding to the positions and numbers of the first positioning and fastening holes;

The device for locating and accurately inserting a needle into the diseased body surface in vivo under medical imaging further includes a pin body with the same number as the first positioning and fastening hole, the pin body passing through the first positioning and fastening hole and the second positioning and fastening hole. Solid hole settings.

Optionally, the frame body includes a plurality of uprights arranged along the circumference of the lower positioning plate or the adhering plate, and the frame body further includes a ring frame connecting the plurality of uprights into a whole.

Optionally, the ring frame is arranged on the upper end of the frame body, and the perimeter of the upper positioning plate is fitted on the ring frame.

Optionally, the lower positioning plate and the lamination plate are integrally formed, and the lower ends of the plurality of uprights are fixed on the lamination plate.

Optionally, all positioning holes are arranged in a matrix, and all lower positioning holes are also arranged in a matrix of the same shape and size.

Optionally, a plurality of identifiers are provided on both the upper positioning plate and the lower positioning plate, and the identifiers are suitable for indicating the position information of the row or column of the matrix.

Optionally, the identifiers are arranged outside the matrix, and different identifiers are aligned with the positions of different rows or columns of the matrix.

Optionally, the upper positioning plate and the lower positioning plate are further provided with a plurality of prompting holes, the prompting holes are arranged on the side of the identifier away from the matrix, and the prompting holes are located in the row of the matrix represented by the corresponding identifier. on the column.

Optionally, the upper positioning plate and the lower positioning plate are further provided with two mutually perpendicular coordinate axes, and the coordinate axes are parallel to one of the sides of the matrix.

Optionally, reinforcing ribs are provided on the upper positioning plate and/or the lower positioning plate.

Optionally, the upper positioning plate is transparent or translucent.

In order to solve the above-mentioned second problem, the technical scheme provided by the present invention is as follows:

A method of positioning a needle in an interventional body with the aid of medical images, comprising the following steps:

S1: According to the results of medical imaging examination, a disposable imaging positioning film is pasted on the external skin near the lesion in the body;

S2: Carry out the second medical imaging examination. During the second medical imaging examination, determine the spatial relative position of the lesion center in the body and the one-time image positioning membrane. By locating the gap on the membrane, mark the center point of the lesion in the body with a marker pen. Marked on the skin, this point is the intended needle insertion point of the skin;

S3: Surrounding the intended needle insertion point of the skin, sterilize the local skin according to the surgical requirements, and lay a sterile surgical drape; paste the center point of the lower positioning plate in the device corresponding to the intended needle insertion point of the skin on the local skin , at this time, the plywood is in contact with the skin and bonded;

S4: Perform medical imaging scan again, find the center point or predetermined target point at the largest diameter of the lesion on the imaging workstation, connect the line to the lower positioning plate and extend through the upper positioning plate, and make the straight line pass through the lower positioning plate after fine-tuning. The positioning hole and the upper positioning hole of the upper positioning plate;

S5: Observe the connection line to ensure that the line avoids important human tissues or structures such as ribs, large bronchi, blood vessels and nerves, and record the position information of the upper positioning hole and the lower positioning hole at this time;

S6: Measure the distance from the center of the lesion to the intended needle insertion point, this distance is the needle insertion depth for puncture;

S8: Remove the upper positioning plate, and pass the needle through the upper positioning hole on the upper positioning plate recorded in S5;

S9: Keep the upper positioning plate on the needle, and operate the needle to pass through the lower positioning hole on the lower positioning plate recorded in S5;

S10: Reinstall the upper positioning plate on the frame body by using the cooperation between the pin body and the positioning fastening hole. At this time, the position and angle of the needle are constrained by the upper positioning plate and the lower positioning plate, and finally the positioning of the needle is completed.

The technical scheme provided by the present invention has the following technical effects:

1. The positioning device provided by the present invention includes: an upper positioning plate, which is provided with a plurality of upper positioning holes suitable for the needles to pass through; The positioning plate is provided with a plurality of lower positioning holes suitable for the needles to pass through; the fitting plate is arranged below the lower positioning plate, and is annularly arranged around the circumference of the lower positioning plate, and the lower surface of the fitting plate is in use. It is suitable for fitting on the surface of human skin; the frame body is connected with the upper positioning plate, the lower positioning plate and the bonding plate, and is suitable for making the upper positioning plate, the lower positioning plate and the bonding plate form a whole.

When using the above positioning device, after the bonding plate of the positioning device is pasted on the human skin, the operation needle passes through the upper positioning hole on the upper positioning plate and the lower positioning hole on the lower positioning plate in turn, and the two positioning holes are used to The angle and position of the needle are restricted. After the needle passes through the lower positioning hole, since the lower positioning plate is also provided with a fitting plate, and there is still a certain distance between the fitting plate and the lower positioning plate, the needle will not directly contact the human body at this time. When the needle does not penetrate the predetermined lower positioning hole, this distance gives the doctor time and opportunity to identify the error, and then have the opportunity to withdraw the needle and re-select the correct lower positioning hole. Therefore, the positioning device described above can reduce the risk of increasing patient pain due to wrong operation.

2. In the positioning device provided by the present invention, the bonding plate and the lower positioning plate are integrally formed. The integrally formed lower positioning plate and the laminating plate can simplify the structure of the entire positioning device, reduce the number of parts, and make the entire positioning plate more convenient to manufacture and assemble.

3. In the positioning device provided by the present invention, a plurality of connecting arms extend from the periphery of the bonding plate, the ends of the connecting arms are connected with the lower positioning plate, and the connecting arms are shell-shaped. The use of connecting arms to connect the lamination plate and the lower positioning plate has a lighter structure and less material than the way that the peripheral ring is connected through the whole body.

4. In the positioning device provided by the present invention, the upper positioning plate is detachably connected to the frame body. On the one hand, after determining the point, angle, and depth of needle insertion, during the final puncture, the operator can hold the upper positioning plate with one hand, and the other hand can easily and accurately pass the needle through the pre-selected positioning hole of the upper positioning plate. , keep the upper positioning plate sleeved on the needle, at this time, the operator can easily put the puncture needle that has been sleeved into the upper positioning plate through the lower positioning plate clearly and accurately, and use the positioning fastening holes on both sides of the upper positioning plate to seamlessly sleeve into the square. The two sides of the frame correspond to the cylinder. At this time, the position and angle of the needle are constrained by the upper positioning plate and the lower positioning plate, and finally the positioning of the needle is completed. This process can ensure that the doctor can more easily observe the relative position of the needle and the lower positioning hole. , to avoid passing the wrong lower positioning hole.

5. In the positioning device provided by the present invention, the ring frame is arranged on the upper end of the frame body, and the circumference of the upper positioning plate is fitted on the ring frame. In the above structure, the ring frame can support and limit the circumference of the upper positioning plate, avoid shaking and skewing of the upper positioning plate, and ensure that the positioning of the needle insertion angle is accurate enough.

6. In the positioning device provided by the present invention, the upper positioning holes and the lower positioning holes are arranged in a matrix. The upper positioning holes and the lower positioning holes distributed in a matrix can form a clear shape of rows and columns, which is convenient for recording and observing the position information of different positioning holes.

7. In the positioning device provided by the present invention, the upper positioning plate and the lower positioning plate are also provided with a plurality of prompt holes, and the prompt holes are arranged on the side of the identifier away from the matrix formed by the upper positioning holes or the lower positioning holes. , the number and position of the prompt holes correspond to the number and positions of the identifiers, and the different prompt holes and the positioning holes indicated by the identifiers corresponding to the prompt holes are in the same row or column.

When positioning the needle, the matrix-type positioning holes usually cause dizziness to the doctor, which leads to the wrong hole being pierced. At this time, through the prompt hole, the identifier corresponding to the prompt hole and the prompt hole can be observed to determine whether the positioning hole into which the needle enters is the correct one. Therefore, this can facilitate the doctor's observation and reduce misoperation.

8. In the positioning device provided by the present invention, the upper positioning plate and the lower positioning plate are also provided with a coordinate axis, and the horizontal axis or the vertical axis of the coordinate axis is one of the matrix formed by the upper positioning hole or the lower positioning hole. The sides are parallel.

Using the coordinate axis, the upper or lower positioning holes distributed in a matrix can be divided into four quadrants, and the upper positioning holes or the lower positioning holes can be classified, so as to further facilitate the marking of the positions of the identification holes. On the other hand, the direction of the entire positioning device can also be determined by the direction of the coordinate axis, so as to avoid the reverse installation of the positioning device due to the symmetrical structure, thereby confusing the position of the positioning hole.

9. In the positioning device provided by the present invention, the upper positioning plate is transparent or translucent. The upper positioning plate in a transparent or translucent state can make it easier for doctors to observe the lower positioning plate through the upper positioning plate, thereby ensuring the accuracy of needle insertion on the lower positioning plate and avoiding the needle penetrating into the wrong lower positioning hole.

10. The present invention also provides a positioning method, comprising the following steps: S1: according to the medical imaging examination result, stick a disposable image positioning film on the in vitro skin close to the lesion in the body; S2: perform a second medical imaging In the second medical imaging examination, the relative position of the lesion center in the body and the one-time image positioning membrane is determined. By locating the gap on the membrane, the center point of the lesion in the body is marked on the skin with a marker. This point is It is the intended needle insertion point of the skin; S3: around the intended needle insertion point of the skin, the local skin is sterilized according to the surgical requirements, and a sterile surgical drape is laid; the center point of the lower positioning plate in the device is connected to the intended skin insertion point. Correspondingly pasted on the skin part, at this time, the adhesive plate is in contact with the skin and bonded; S4: Perform medical imaging scan again, and find the center point at the largest diameter of the lesion in the body or the connection between the predetermined target points on the imaging workstation Go to the lower positioning plate and extend through the upper positioning plate. After fine-tuning, make the straight line pass through the lower positioning hole of the lower positioning plate and the upper positioning hole of the upper positioning plate; S5: Observe the connecting line to ensure that the straight line avoids ribs, large bronchi and blood vessels and nerves and other important human tissues or structures, record the position information of the upper positioning hole and the lower positioning hole at this time; S6: Measure the distance from the center of the lesion to the point where the needle is to be inserted, and this distance is the depth of needle insertion; S8: Remove the needle Lower the upper positioning plate, pass the needle through the upper positioning hole on the upper positioning plate recorded in S5; S9: keep the upper positioning plate over the needle, and operate the needle to pass through the lower positioning hole on the lower positioning plate recorded in S5; S10: Reinstall the upper positioning plate on the frame body by using the cooperation between the pin body and the positioning fastening hole. At this time, the position and angle of the needle are constrained by the upper positioning plate and the lower positioning plate, and finally the positioning of the needle is completed.

By analyzing the above methods, it can be seen that the distance between the lamination plate and the lower positioning plate can ensure that the needle will not directly penetrate the human body, giving the doctor time and opportunity to reselect the lower positioning hole. Moreover, in the above method, the entire positioning process can be completed only with the aid of the self-contained workstation of the medical image, and no additional software is required for calculation, thereby improving the applicable orientation of the method and reducing the technical requirements of the method. On the other hand, in the above method, there is a step of removing the upper positioning plate and then operating the needle to penetrate the lower positioning plate. Through this step, the doctor can more intuitively observe the positional relationship between the needle and the lower positioning hole, and reduce errors Action probability.

To sum up, the positioning device and positioning method provided by the present invention can avoid increasing the number of imaging examinations of patients. Without the guidance of ultrasound images, the body surface positioning of various organ lesions can be accurately carried out only by the workstation that comes with CT. At the same time, control the biopsy needle and/or the treatment needle to accurately penetrate the lesion target, reduce the treatment cost and the pain of the patient, and complete the purpose of minimally invasive and accurate treatment of the patient. The device and method have the advantages of wide application range, easy learning and mastery. In addition, it also has the advantages of convenient observation and operation, simple structure and light weight.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is a perspective view of the positioning device provided in Embodiment 1 of the present invention;

FIG. 2 is a perspective view of another embodiment of the positioning device shown in FIG. 1;

3 is a perspective view of an upper positioning plate in the positioning device shown in FIG. 1;

4 is a perspective view of a lower positioning plate, a bonding plate and a frame body in the positioning device shown in FIG. 1;

5 is a perspective view of the positioning device provided in Embodiment 2 of the present invention;

Description of reference numbers:

1-upper positioning plate, 2-upper positioning hole, 3-coordinate axis, 4-reinforcing rib, 5-identifier, 6-reminder hole, 7-first positioning fastening hole, 8-second positioning fastening hole, 9-pin body, 10-frame body, 11-upright column, 12-ring frame, 13-lower positioning plate, 14-lower positioning hole, 15-connecting arm, 16-fitting plate.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Example 1:

Referring to FIGS. 1 to 4 , it is the first embodiment of the present invention. This embodiment provides a device for locating the body surface of the in vivo lesion under medical imaging and accurately inserting the needle into the lesion, which is suitable for the lesions of the chest, hepatobiliary pancreas, kidney and uterine appendages. needle biopsy and precise minimally invasive treatment such as radiofrequency ablation.

The positioning device includes an upper positioning plate 1 , a lower positioning plate 13 , a bonding plate 16 and a frame body 10 . The frame body 10 is used to connect the upper positioning plate 1 , the lower positioning plate 13 and the bonding plate 16 , and is suitable for forming the upper positioning plate 1 , the lower positioning plate 13 and the bonding plate 16 into a whole. The frame body 10 includes four uprights 11 that are parallel and encircled in a circle. The upper ends of the uprights 11 are connected to a ring frame 12 that connects the plurality of uprights 11 into a whole, and a positioning plate 1 is installed above the ring frame 12 . The lower end of the upright column 11 is fixedly connected to the adhering plate 16 , and the upper end is connected to the ring frame 12 .

The frame body 10 is also provided with two first positioning and fastening holes 7, and the upper positioning plate 1 is provided with second positioning and fastening holes 8 corresponding to the positions and numbers of the first positioning and fastening holes 7; A pin body 9 with the same number of positioning and fastening holes 7, the pin body 9 passes through the first positioning and fastening hole 7 and the second positioning and fastening hole 8 to complete the fastening between the frame body 10 and the upper positioning plate 1 connect. When in use, the pin body 9 can be pulled out to complete the disassembly between the upper positioning plate 1 and the frame body 10 .

The bonding plate 16 of the positioning device in this embodiment is integrally formed with the lower positioning plate 13 . The fitting plate 16 is arranged below the lower positioning plate 13, and is a ring-shaped arrangement around the circumference of the lower positioning plate 13. The lower surface of the fitting plate 16 is suitable for fitting on the surface of the human skin during use; the surrounding of the fitting plate 16 extends A plurality of connecting arms 15 are formed, and the ends of the connecting arms 15 are connected to the lower positioning plate 13. The connecting arms 15 are in the shape of a shell that is convenient for injection molding and core pulling.

The upper positioning plate 1 is provided with a plurality of upper positioning holes 2 suitable for the needles to pass through; the upper positioning holes 2 are distributed in a matrix, and a number as an identifier 5 is also provided on the side of different rows and columns. to represent a different number of rows or columns. The outer side of the identifier 5 is also provided with a prompting hole 6 correspondingly, and the prompting hole 6 is located on the same row or column as the upper positioning hole 2 indicated by the identifier 5 . The upper positioning plate 1 is also provided with two mutually perpendicular coordinate axes 3, and the intersection of the two coordinate axes 3 is located at the center of all the upper positioning holes 2, and is parallel to the row or column of the matrix. The matrix is divided into four quadrants. The upper positioning plate 1 is also provided with a reinforcing rib 4 . The reinforcing rib 4 can be in a crisscross direction, or can be arranged in a ring shape as shown in FIG. 2 , and the annular reinforcing rib 4 has a more beautiful appearance. Meanwhile, due to the existence of the identifier 5, the coordinate axis 3 on the upper positioning plate 1 and the lower positioning plate 13 is not necessary. In order to ensure that the doctor can observe the lower positioning plate 13 through the upper positioning plate 1, the upper positioning plate 1 is made of transparent or translucent material.

The lower positioning plate 13 is similar to the upper positioning plate 1, and is provided with a plurality of lower positioning holes 14 suitable for needles to pass through; the lower positioning holes 14 are distributed in a matrix, and are also provided with identifiers on the side of different rows and columns The number of 5, the number is used to represent the number of different rows or columns. The outer side of the identifier 5 is also provided with a prompting hole 6 correspondingly, and the prompting hole 6 and the lower positioning hole 14 indicated by the identifier 5 are located in the same row or column. The lower positioning plate 13 is also provided with two coordinate axes 3 that are perpendicular to each other, and the intersection of the two coordinate axes 3 is located at the center of all the lower positioning holes 14, and is parallel to the row or column of the matrix. Divide into four quadrants.

The method for locating the needle by means of the above-mentioned positioning device and the medical imaging equipment, that is, the using method of the above-mentioned positioning device is as follows:

S1: According to the results of medical imaging examination, a disposable imaging positioning film is pasted on the external skin near the lesion in the body;

S2: Carry out the second medical imaging examination. During the second medical imaging examination, determine the spatial relative position of the lesion center in the body and the one-time image positioning membrane. By locating the gap on the membrane, mark the center point of the lesion in the body with a marker pen. Marked on the skin, this point is the intended needle insertion point of the skin;

S3: Surrounding the intended needle insertion point of the skin, sterilize the local skin according to the surgical requirements, and lay a sterile surgical drape; the center point of the lower positioning plate in the device is pasted on the skin part corresponding to the intended needle insertion point of the skin , at this time, the plywood is in contact with the skin and bonded;

S4: Perform medical imaging scan again, find the center point or predetermined target point at the largest diameter of the lesion on the imaging workstation, connect the line to the lower positioning plate and extend through the upper positioning plate, and make the straight line pass through the lower positioning plate after fine-tuning. The positioning hole and the upper positioning hole of the upper positioning plate;

S5: Observe the connection line to ensure that the line avoids important human tissues or structures such as ribs, large bronchi, blood vessels and nerves, and record the position information of the upper positioning hole and the lower positioning hole at this time;

S6: Measure the distance from the center of the lesion to the intended needle insertion point, this distance is the needle insertion depth for puncture;

S8: Remove the upper positioning plate, and pass the needle through the upper positioning hole on the upper positioning plate recorded in S5;

S9: Keep the upper positioning plate on the needle, and operate the needle to pass through the lower positioning hole on the lower positioning plate recorded in S5;

S10: Reinstall the upper positioning plate on the frame body by using the cooperation between the pin body and the positioning fastening hole. At this time, the position and angle of the needle are constrained by the upper positioning plate and the lower positioning plate, and finally the positioning of the needle is completed.

Example 2:

Referring to FIG. 5 , Embodiment 2 is provided in the present invention. This embodiment also provides a device for locating the body surface of an in vivo lesion under medical imaging and accurately inserting a needle into the lesion. The difference from Embodiment 1 is that the bonding plate 16 and the lower positioning plate 13 in this embodiment are of separate design, and the uprights 11 pass through the lower positioning plate 13 and are fixed to the bonding plate 16 . The advantage of this structure is that it has better force stability, but at the same time, compared with Example 1, it has more parts, which increases the difficulty of manufacturing. Apart from that, other structures of this embodiment are the same as those of Embodiment 1, and thus have the advantages brought by the corresponding structures in Embodiment 1. The use method and function principle of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (16)

1. a device for positioning the body surface of a diseased body in a medical image and accurately inserting a needle into the diseased lesion, it is characterized in that, comprising: an upper positioning plate, which is provided with a plurality of upper positioning holes suitable for the needles to pass through; The lower positioning plate is arranged below the upper positioning plate, and the lower positioning plate is provided with a plurality of lower positioning holes suitable for the needles to pass through; The fitting plate is arranged below the lower positioning plate and is a ring-shaped arrangement around the circumference of the lower positioning plate, and the lower surface of the fitting plate is suitable for fitting on the surface of human skin during use; The frame body is connected to the upper positioning plate, the lower positioning plate and the laminating plate, and is suitable for making the upper positioning plate, the lower positioning plate and the laminating plate form a whole. 2 . The device for locating the body surface of a lesion in vivo under medical imaging and accurately inserting a needle into the lesion according to claim 1 , wherein the fitting plate and the lower positioning plate are integrally formed. 3 . 3 . The device for locating the body surface of in vivo lesions under medical imaging and accurately inserting the needle into the lesion according to claim 2 , wherein a plurality of connecting arms extend from the periphery of the abutting plate, and the ends of the connecting arms are connected to the lower surface. 4 . The positioning plate is connected, and the connecting arm is in the shape of a shell. 4 . The device for locating the body surface of in vivo lesions under medical imaging and accurately inserting the needle into the lesion according to claim 1 , wherein the upper positioning plate is detachably connected to the frame body. 5 . 5 . The device for locating the body surface of in vivo lesions under medical imaging and accurately inserting the needle into the lesion according to claim 4 , wherein the upper end of the frame is provided with at least two first positioning fastening holes, and the upper positioning The plate is provided with second positioning and fastening holes corresponding to the positions and numbers of the first positioning and fastening holes; The device for locating and accurately inserting a needle into the diseased body surface in vivo under medical imaging further includes a pin body with the same number as the first positioning and fastening hole, the pin body passing through the first positioning and fastening hole and the second positioning and fastening hole. Solid hole settings. 6 . The device for locating the body surface of lesions in vivo under medical imaging and accurately inserting needles into the lesions according to claim 1 , wherein the frame body comprises a plurality of uprights arranged along the circumference of the lower positioning plate or the fitting plate, so that the The frame body also includes a ring frame connecting a plurality of uprights into a whole. 7 . The device for locating the body surface of in vivo lesions under medical imaging and accurately inserting the needle into the lesion according to claim 6 , wherein the ring frame is arranged on the upper end of the frame body, and the circumference of the upper positioning plate is fitted with on the ring frame. 8 . The device for locating and accurately inserting a needle into the lesion surface under medical imaging according to claim 6 , wherein the lower positioning plate and the fitting plate are integrally formed, and the lower ends of the plurality of uprights are fixed on the fitting plate. 9 . superior. 9. The device for locating the body surface of in vivo lesions under medical imaging and accurately inserting the needle into the lesion according to claim 1, wherein all positioning holes are arranged in a matrix, and all lower positioning holes are also arranged in a same shape and shape. size matrix. 10. The device for locating the body surface of in vivo lesions under medical imaging and accurately inserting the needle into the lesion according to claim 9, wherein a plurality of identifiers are provided on both the upper positioning plate and the lower positioning plate, and the identifiers are suitable for Yu represents the position information of the row or column of the matrix. 11. The device for locating the body surface of an in vivo lesion under medical imaging and accurately inserting a needle into the lesion according to claim 10, wherein the identifier is set outside the matrix, and different identifiers are associated with different rows or columns of the matrix. The positions are relatively aligned. 12 . The device for locating the body surface of in vivo lesions under medical imaging and accurately inserting the needle into the lesion according to claim 11 , wherein the upper positioning plate and the lower positioning plate are further provided with a plurality of prompting holes, and the prompting The holes are arranged on the side of the identifiers away from the matrix, and the cue holes are located on the rows or columns of the matrix indicated by the corresponding identifiers. 13 . The device for locating the body surface of in vivo lesions under medical imaging and accurately inserting the needle into the lesion according to claim 9 , wherein the upper positioning plate and the lower positioning plate are further provided with two mutually perpendicular coordinate axes, 13 . The coordinate axis is parallel to one of the sides of the matrix. 14 . The device for locating the body surface of an in vivo lesion under medical imaging and accurately inserting a needle into the lesion according to claim 1 , wherein the upper positioning plate and/or the lower positioning plate are provided with reinforcing ribs. 15 . 15 . The device for locating the body surface of a lesion in vivo under medical imaging and accurately inserting a needle into the lesion according to any one of claims 1 to 14 , wherein the upper positioning plate is transparent or translucent. 16 . 16. A method for locating the body surface of a lesion in vivo under medical imaging and accurately inserting a needle into the lesion, comprising the following steps: S1: According to the results of the medical imaging examination, a disposable imaging positioning film is pasted on the external skin close to the lesion in the body; S2: Carry out the second medical imaging examination. During the second medical imaging examination, determine the spatial relative position of the lesion center in the body and the one-time image positioning membrane, and use a marker to mark the center point of the lesion in the body by locating the gap on the membrane. Marked on the skin, this point is the intended needle insertion point of the skin; S3: around the intended needle insertion point of the skin, sterilize the local skin according to the surgical requirements, and spread a sterile surgical drape; connect the center point of the lower positioning plate in the device described in claims 1 to 15 to the intended needle insertion point in the skin Correspondingly, the points are pasted on the skin part, at this time, the plywood is in contact with the skin and glued; S4: Perform medical imaging scan again, find the center point or predetermined target point at the largest diameter of the lesion on the imaging workstation, connect the line to the lower positioning plate and extend it through the upper positioning plate, and make the straight line pass through the lower positioning plate after fine-tuning. The positioning hole and the upper positioning hole of the upper positioning plate; S5: Observe the connection line to ensure that the line avoids important human tissues or structures such as ribs, large bronchi, blood vessels and nerves, and record the position information of the upper positioning hole and the lower positioning hole at this time; S6: Measure the distance from the center of the lesion to the intended needle insertion point, this distance is the needle insertion depth for puncture; S8: Remove the upper positioning plate, and pass the needle through the upper positioning hole on the upper positioning plate recorded in S5; S9: Keep the upper positioning plate on the needle, and operate the needle to pass through the lower positioning hole on the lower positioning plate recorded in S5; S10: Reinstall the upper positioning plate on the frame body by using the cooperation between the pin body and the positioning fastening hole. At this time, the position and angle of the needle are constrained by the upper positioning plate and the lower positioning plate, and finally the positioning of the needle is completed.

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