CN216628655U

CN216628655U - CT-guided percutaneous puncture body surface positioning grid

Info

Publication number: CN216628655U
Application number: CN202122481588.5U
Authority: CN
Inventors: 李梦杰; 刘鹏; 王欢; 王彪; 金玉珍
Original assignee: Qingxian People's Hospital
Current assignee: Qingxian People's Hospital
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-31
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a body surface positioning grid for percutaneous puncture under the guidance of CT (computed tomography), which comprises an upper substrate and a lower substrate which are parallel to each other, wherein a plurality of guide holes with mutually corresponding position sizes are arranged in the upper substrate and the lower substrate in a penetrating way, a 2cm gap is arranged between the upper substrate and the lower substrate, the guide holes of the upper substrate form an upper grid, and the guide holes of the lower substrate form a lower grid, wherein the lower grid is used for determining a skin puncture point, and the upper grid is used for determining a puncture angle together with the skin puncture point.

Description

CT-guided percutaneous puncture body surface positioning grid

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a body surface positioning grid for percutaneous puncture under the guidance of CT (computed tomography) which is used for puncture biopsy and radioactive iodine 125 particle implantation.

Background

In recent years, the incidence of cancer is gradually increased, clinical methods of CT-guided percutaneous needle biopsy and iodine 125 particle implantation become common, a positioning grid needs to be placed on the body surface of a patient firstly in the operation process, and then the puncture or implantation is performed after the position of the positioning grid is calibrated, the positioning grid is mainly divided into three types at present, the first type is a planar positioning grid used in free-hand operation, which is also the most common type at present, medical workers select skin puncture points through hole positions of the positioning grid, risks such as deflection puncture or repeated puncture can be avoided, but for puncture with a certain angle, the puncture angle can only depend on visual observation medical care, and the actual operation precision is not easy to grasp by the medical workers; the second is to adopt a template, but the template provides higher positioning accuracy, but lacks flexibility, and once an error exists, the template needs to be readjusted, so that the use is complicated; the third application is a navigation device, but the device is expensive, troublesome to operate and not suitable for most primary hospitals.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art, and provides a body surface positioning grid for percutaneous puncture under the guidance of CT (computed tomography) so as to meet the requirement of puncture at any clinical angle and help to realize more accurate and efficient puncture effect.

The technical effect to be achieved by the utility model is realized by the following technical scheme:

the utility model provides a body surface location bars of percutaneous puncture under CT guide, includes two upper substrate and infrabasal plate that are parallel to each other, upper substrate and infrabasal plate all run through the guiding hole that is equipped with a plurality of position dimensions and corresponds each other, upper substrate and infrabasal plate the guiding hole size is the same, quantity equals, the guiding hole of upper substrate constitutes the upper grid, the guiding hole of infrabasal plate constitutes down the grid, the upper substrate arrives be equipped with the clearance between the infrabasal plate.

Preferably, the gap from the upper substrate to the lower substrate is 2 cm.

Preferably, the upper substrate is connected to the lower substrate through support pillars.

Preferably, each guide hole is surrounded by four sequentially vertical positioning guide wires, and the guide hole is rectangular.

Preferably, each guide hole has a length and a width of 5 mm.

Preferably, the positioning guidewire is made of nitinol.

Preferably, metal strips are laid on the peripheral edges of the upper substrate, two transverse and vertical metal strips which are staggered with each other are also laid at the center of the upper substrate, the upper grid is equally divided into four parts by the metal strips, and length mark scribed lines are arranged on the surface of each metal strip.

Preferably, a clamping handle is fixedly arranged on one side of the upper substrate and one side of the lower substrate.

Preferably, the upper substrate, the lower substrate, the supporting columns and the clamping handles are all made of alloy materials.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a double-layer body surface positioning grid aiming at the situation that a planar positioning grid is difficult to deal with multi-angle puncture, wherein the upper substrate and the lower substrate are both provided with a grid in a penetrating way, the lower grid is used for determining a skin puncture point, and the upper grid is used for determining a puncture angle together with the skin puncture point, so that puncture at any angle is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a perspective view of the present embodiment;

FIG. 2 is a schematic front view of the present embodiment;

FIG. 3 is an enlarged schematic view taken at A in connection with FIG. 2;

FIG. 4 is a schematic side view of the present embodiment;

FIG. 5 is a schematic cross-sectional view taken about C-C of FIG. 4;

in the figure, 1-upper substrate; 3, arranging a mesh grid; 2-lower substrate; 4-lower grid; 5-a guide hole; 6-support column; 7-positioning guide wires; 8-metal strips; 9-length mark scribe lines; 10-middle line scribing; 11-clamping handle.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, and is not intended to limit the present invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, the present embodiment provides a body surface positioning grid for percutaneous puncture guided by CT, including two upper substrate 1 and lower substrate 2 parallel to each other, a gap is provided between the upper substrate 1 and the lower substrate 2, the upper substrate 1 and the lower substrate 2 are both provided with a plurality of guiding holes 5 corresponding to each other in position and size in a penetrating manner, the number of the guiding holes 5 of the upper substrate 1 and the lower substrate 2 is equal, the guiding holes 5 of the upper substrate 1 form an upper grid 3, and the guiding holes 5 of the lower substrate 2 form a lower grid 4. That is, the upper grid 3 and the lower grid 4 are arranged in parallel and their hole sites are aligned with each other.

When in use, the lower mesh 4 is tightly attached to the body surface of a patient and used for determining the skin part to be punctured; go up the net bars 3 and puncture point then be used for assisting medical personnel to confirm the puncture angle together, rely on the three-dimensional location bars that constitutes with double-deck seal wire net, can realize the puncture of multiple angles such as perpendicular or slope, and go up the net bars 3 and do not set up the entity obstacle down between the net bars 4, consequently the puncture process is smooth in the same direction as resistance-free, generally speaking, this embodiment structure is simple and clear, therefore, the cost is cheap, the effect is ingenious in the application, need not to counterpoint repeatedly and can reach accurate location, the time that multi-angle puncture was spent has been saved greatly.

According to clinical experience, the gap from the upper substrate 1 to the lower substrate 2 is preferably 2 cm. Fixed connection is carried out through support column 6 between upper substrate 1 and the infrabasal plate 2, support column 6 need avoid the region that guiding hole 5 set up. This embodiment has guaranteed go up the net bars 3 and be hollow structure between the net bars 4 down, do not shelter from the obstacle, be favorable to smooth puncture the surplus, still be difficult to be in hematocele in the location bars, subsequent cleaning work of being convenient for.

Referring to fig. 2-5, each of the guiding holes 5 is surrounded by four sequentially vertical positioning guide wires 7, the guiding hole 5 is rectangular, and the length and width of the guiding hole 5 are preferably 5mm according to clinical requirements in order to achieve effective positioning and facilitate a needle tool to be capable of puncturing close to the positioning guide wires 7. The upper net grid 3 and the lower net grid 4 are integrally square and about 8cm long.

Further, the positioning guide wire 7 is made of nickel-titanium alloy, and can be clearly developed under CT scanning without influencing the quality of CT pictures.

In addition, metal strips 8 are laid on the peripheral edges of the upper substrate 1, two transverse and vertical metal strips 8 which are staggered with each other are also laid at the center of the upper substrate 1, the upper grid 3 is equally divided into four parts by the metal strips 8, length mark scribed lines 9 are printed on each metal strip 8, the length mark scribed lines 9 are used for measuring the scales of each part of the upper grid 3 and are used for puncture positioning and resetting operation, repeated puncture caused by pure visual inspection can be avoided through accurate hole site measurement, and injury to patients is reduced.

Of course, in some other embodiments, the lower substrate 2 may also be laid with the metal strip 8 at a corresponding position to provide a length mark, so that the positioning grid can be used on both sides, but in a use state, the outer surface of the lower substrate 2 needs to be tightly attached to the body surface of the patient to be punctured, and the flat surface is kept, which not only facilitates the stable placement of the positioning grid, but also improves the comfort of the patient, therefore, the embodiment preferably sets the lower substrate 2 to be a smooth surface without printing the length mark.

Further, the present embodiment is formed by etching a middle scribe line 10 in the middle of the upper substrate 1, and the middle scribe line 10 is used for positioning a reference mark.

In this embodiment, a clamping handle 11 is fixedly arranged on one side of the positioning grid, and the clamping handle 11 is used for integrally fixing the positioning grid on an external bracket.

In this embodiment, the whole positioning grid, including the upper substrate 1, the lower substrate 2, the support columns 6 and the clamping handles 11, are made of alloy materials, so that the materials can adapt to repeated high-pressure disinfection, cross infection is avoided, the positioning grid can be repeatedly used, and better economic efficiency is achieved.

In conclusion, the three-dimensional positioning grid formed by the double-layer wire guide net can meet the requirement of puncture at any clinical angle, the puncture is smooth and free of resistance, and the whole member is made of alloy materials, so that repeated disinfection can be realized, and the cost is saved; therefore, the embodiment has the advantages of simple structure, low cost and convenient use, and has certain popularization and application values in the field of medical instruments, particularly in the aspect of percutaneous puncture under CT guidance.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.

Claims

1. The utility model provides a CT guide is body surface location bars of percutaneous puncture down, its characterized in that includes two upper substrate and infrabasal plate that are parallel to each other, upper substrate and infrabasal plate all run through and are equipped with the guiding hole that a plurality of position size corresponds each other, upper substrate and infrabasal plate the guiding hole size is the same, quantity equals, the guiding hole of upper substrate constitutes the upper screen bars, the guiding hole of infrabasal plate constitutes the lower screen bars, the upper substrate arrives be equipped with the clearance between the infrabasal plate.

2. A CT-guided percutaneous needle body surface positioning grid according to claim 1, wherein the gap between the upper substrate and the lower substrate is 2 cm.

3. A CT-guided percutaneous body surface positioning grid according to claim 2, wherein the upper substrate is connected to the lower substrate by support posts.

4. A CT-guided percutaneous needle body surface positioning grid according to claim 3, wherein each of the guiding holes is surrounded by four sequentially vertical positioning guide wires, and the guiding hole is rectangular.

5. A CT-guided percutaneous body surface positioning fence according to claim 4, wherein each guide hole has a length and a width of 5 mm.

6. A CT-guided percutaneous body surface positioning fence according to claim 5, wherein the positioning guide wire is made of nitinol.

7. A body surface positioning grid for percutaneous puncture guided by CT according to claim 6, wherein metal strips are laid on the peripheral edges of the upper substrate, two metal strips which are staggered with each other are also laid at the central position of the upper substrate, the metal strips divide the upper grid into four parts, and each metal strip is provided with a length mark reticle on the surface.

8. A CT-guided percutaneous needle body surface positioning fence according to claim 7, wherein a clamping handle is fixedly arranged on one side of the upper substrate and one side of the lower substrate.

9. A CT-guided percutaneous body surface positioning fence according to claim 8, wherein the upper substrate, the lower substrate, the supporting columns and the clamping handles are made of alloy materials.