CN218045291U - Auxiliary device for ultrasonic guide out-of-plane needle insertion - Google Patents

Abstract

The utility model discloses an auxiliary device for guiding a needle into an out-of-plane plane by an ultrasonic wave, which is used to guide a puncture device to pierce an injection target point, comprising an auxiliary device body used in conjunction with an ultrasonic probe and a hollow catheter arranged on the auxiliary device body. The body of the auxiliary device is composed of two sets of fixed fan-shaped frames. The fan-shaped frames are 90 degrees. The fan-shaped frames are provided with angular scales. The conduit is located between the two sets of fan-shaped frames. At the center of the circle, the needle is threaded through the catheter and out the center of the circle into the skin. Two sets of 90-degree fan-shaped frames 21 are used to calculate the needle entry angle and depth of the needle using trigonometric functions, and the fixed groove at the arc surface 213 of the fan-shaped frame 21 and the positioning rod 33 of the catheter 3 are used to adjust the needle entry. The angle is not only accurate in calculation, but also easy to use.

Description

An auxiliary device for ultrasound-guided out-of-plane needle insertion

technical field

The utility model belongs to the technical field of medical equipment, in particular to an auxiliary device for guiding needle insertion out of plane by ultrasonic waves.

Background technique

Piercing, a method of diagnosing or treating disease. Under strict disinfection, different special puncture needles are used to pierce blood vessels, body cavities or organs to extract fluid or tissue. Examining the extracted fluid or tissue can understand its nature and lesions, so as to assist diagnosis, and inject drugs through the puncture needle to achieve the purpose of treatment. Commonly used are venipuncture, arterial puncture, lumbar puncture, thoracentesis, abdominal puncture, pericardial cavity puncture, bone marrow puncture, liver puncture, spleen puncture, kidney puncture, cerebellar cisterna puncture, lymph node puncture, joint puncture, maxillary sinus puncture, etc.

At present, this kind of puncture is mostly manual puncture or manual puncture guided by ultrasound and radiographic contrast. This method reflects a problem, that is, the adjustment of the puncture angle. Although ultrasound and radiographic methods are used to assist puncture, as shown in Figure 1 Figure 1 is a schematic diagram of problems existing in the prior art. When using an ultrasonic probe for detection, it is normally necessary to place the probe close to the skin surface so that the sound wave direction a is perpendicular to the skin surface, and the needle of the puncture device 1 needs to be inserted into the skin at an angle. Although the insertion length L' of the needle into the skin can be known, because the angle R' between the needle and the skin cannot be accurately known, only the guidance of the ultrasonic device still has a large error with the injection target, especially the injection target and the skin. In areas where the surface distance H' is deeper, the error will be larger.

Utility model content

The purpose of the utility model is to provide an auxiliary device for ultrasonically guided out-of-plane needle insertion, so as to solve the problem of large puncture angle error value in the prior art.

In order to achieve the above purpose, the utility model provides the following technical solutions: an auxiliary device for guiding needle insertion out of plane by ultrasonic waves, used to guide the puncture device to penetrate the injection target, using an ultrasonic probe 2 corresponding to the skin, the structure of which includes the main body of the auxiliary device 2 and a conduit 3, the auxiliary device body 2 is composed of two sets of fan-shaped frames 21 at 90 degrees, the fan-shaped frames 21 include a bottom edge 22 and a straight edge 23, and the bottom edge 22 and the straight edge 23 form an angle of 90 degrees;

The fan-shaped frame 21 is provided with an arc surface 213, and the arc surface 213 is provided with a plurality of positioning grooves 212 regularly arranged along the arc surface 213, and the positioning rod 33 in the catheter 3 is placed in the positioning groove 212; A scale 211 is provided at 213, and the scale 211 can correspond to the positioning groove 212, and the scale 211 is marked from 0 to 90 degrees.

The bottoms 22 of the two groups of fan-shaped frames 21 at 90 degrees are fixedly connected by the bottom surface 24, and the straight sides 23 of the two groups of fan-shaped frames 21 are fixedly connected by the straight faces 25. Two sets of fan-shaped frames 21, the bottom faces 24, and the straight faces 25 form a storage space 27, and the accommodation space 27 is an open structure at the arc surface 213 of the two groups of fan-shaped frames 21;

At the angle between the bottom surface 24 and the straight surface 25, there is a guide hole 26 communicating with the accommodation space 27 and the outside;

Beneficial effects of the utility model: two sets of fan-shaped frames 21 at 90 degrees are used to calculate the needle insertion angle and depth of the needle using trigonometric functions, and the fixing groove at the arc surface 213 of the fan-shaped frame 21 and the positioning rod of the catheter 3 are used 33 to adjust the needle entry angle of the needle, which is not only accurate in calculation, but also easy to use.

Other features and advantages of the present utility model will be described in detail in the following specific embodiments.

Description of drawings

Fig. 1 is a schematic diagram of technical problems existing in the prior art.

Fig. 2 is the structure diagram in the utility model patent.

Fig. 3 is a schematic diagram of the state of use in the utility model patent.

Fig. 4 is an enlarged view at D in Fig. 3 .

Fig. 5 is a schematic diagram illustrating the principle of use of the utility model patent.

Fig. 6 is a schematic diagram of angle adjustment before injection in the utility model patent embodiment.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

Please refer to Figures 1-2, the utility model relates to an auxiliary device for guiding out-of-plane needle insertion by ultrasound, which is used to guide the puncture device 1 to penetrate the injection target, using an ultrasonic probe 2 corresponding to the skin, and its structure includes an auxiliary device body 2 and catheter 3. The auxiliary device body 2 is composed of two groups of fan-shaped frames 21 at 90 degrees. The fan-shaped frame 21 includes a bottom edge 22 and a straight edge 23. As shown in Figure 1-2, the bottom edge 22 is in contact with the skin surface during use. Located at the bottom edge of Figure 1, the straight edge 23 is perpendicular to the skin surface during use, which is the vertical direction in Figure 1, and the bottom edge 22 and the straight edge 23 form an angle of 90 degrees;

The fan-shaped frame 21 is provided with an arc surface 213, and the arc surface 213 is provided with a plurality of positioning grooves 212 regularly arranged along the arc surface 213. Each positioning groove 212 represents a fixed angle. The rod 33 is placed in the positioning groove 212; the fan-shaped frame 21 is provided with a scale 211 near the arc surface 213, the scale 211 can correspond to the positioning groove 212, and the scale 211 is marked from 0-90 degrees, and how to use the scale 211 will be discussed below There are detailed instructions.

The bottoms 22 of the two groups of fan-shaped frames 21 at 90 degrees are fixedly connected by the bottom surface 24, and the straight sides 23 of the two groups of fan-shaped frames 21 are fixedly connected by the straight faces 25. Two sets of fan-shaped frames 21, the bottom faces 24, and the straight faces 25 form a storage space 27, and the accommodation space 27 is an open structure at the arc surface 213 of the two groups of fan-shaped frames 21;

At the angle between the bottom surface 24 and the straight surface 25, there is a guide hole 26 communicating with the accommodation space 27 and the outside;

The conduit 3 comprises a lower tube 31, an upper tube 32, and a positioning rod 33. The lower tube 31 and the upper tube 32 are all hollow structures. It is socketed with the lower part of the upper tube 32, and positioning rods 33 are arranged radially on both sides of the upper part of the upper tube 32, and the positioning rods 33 and the upper tube 32 form a "T" shape;

There are two ways to connect:

1. The inner diameter of the lower tube 31 is larger than the outer diameter of the upper tube 32, the upper end 311 of the lower tube 31 is inserted into the lower part of the upper tube 32, and the upper tube 32 and the lower tube 31 can slide freely;

2. The inner diameter of the upper tube 32 is larger than the outer diameter of the lower tube 31, and the lower part of the upper tube 32 is inserted into the upper end 311 of the lower tube 31, and the upper tube 32 and the lower tube 31 can slide freely;

This embodiment shows the first way.

As shown in Figures 2, 3, and 6, the use method of the conduit 3 is that the lower tube 31 is socketed with the upper tube 32, and the lower end 312 of the lower tube 31 is set in the guide hole 26. Put it into the positioning groove 212 of the right angle, and insert the needle of the puncture device 1 into the skin after passing through the upper tube 32, the lower tube 31, and the guide hole 26;

It should be noted that the overall structure of the auxiliary device of this patent is very small, the overall height (the radius of the fan-shaped frame 21) is about 2 cm, and the needle of the puncture device 1 is normally 5-10 cm, so the needle of the puncture device 1 passes through the upper tube 32 , lower tube 31, guide hole 26 and then inserted into the skin is no problem.

As shown in Figure 6, the reason for setting the socket structure between the lower tube 31 and the upper tube 32 is that when the angle corresponding to the positioning groove 212 needs to be adjusted, the upper tube 32 needs to be moved in the direction of the arrow to make the positioning rod break away from the positioning groove 212 , and the lower tube 31 and the upper tube 32 are set as a sleeve structure, only the depth of the lower tube 31 and the upper tube 32 is suitable, and when the positioning rod is separated from the positioning groove 212, it is ensured that the lower tube 31 and the upper tube 32 are not socketed. If there is no sleeve structure, that is, the lower tube 31 and the upper tube 32 are set as a whole, when the positioning rod 33 moves in the direction of the arrow and breaks away from the positioning groove 212, it is easy to cause the lower end 312 of the lower tube 31 to slip from the guide hole 26. It falls off inside, causing inconvenient use.

As shown in Figure 3-5, the following describes how to use this patent in detail:

When in use, first fix the ultrasonic equipment on the side of the straight face 25, the sound wave direction a emitted by the ultrasonic probe is vertically downward to the skin surface, and the bottom surface 24 is placed on the skin to detect the depth H of the injection target point, wherein the sound wave direction a The junction point on the lower skin surface is A, the injection target point C, and the contact point between the straight face 25 and the skin surface is B (that is, the insertion point where the needle of the puncture device 1 is inserted into the skin), forming a right-angled triangle BAC, wherein point A is a right angle , AC is equal to H, and the distance of AB is a known fixed value. According to the trigonometric function, the depth CB (that is, L in Fig. 6) of the needle of the puncture device 1 inserted into the skin and the angle of R2 can be calculated, because R2 is equal to R1 , the angle of R1 is the angle between the conduit 3 and the bottom surface 24;

According to the calculated angle of R1, adjust the catheter 3 to an appropriate angle, insert the needle into the skin after passing through the upper tube 32, the lower tube 31, and the guide hole 26, and insert the needle into the skin according to the calculated value, namely It can be accurately inserted into the injection target point C.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

1. An auxiliary device for ultrasonically guided out-of-plane needle insertion, used to guide a puncture device to pierce an injection target, characterized in that it includes an auxiliary device body used in conjunction with an ultrasonic probe and a hollow catheter arranged on the auxiliary device body, the The body of the auxiliary device is composed of two sets of fan-shaped frames fixedly arranged at 90 degrees. The fan-shaped frame is provided with an angled scale, the conduit is located between the two sets of fan-shaped frames, and one end of the conduit is located At the center of the frame, the needle passes through the catheter and is inserted into the skin from the center of the circle. 2. An auxiliary device for ultrasound-guided out-of-plane needle insertion according to claim 1, wherein the fan-shaped frame includes a bottom edge and a straight edge, the bottom edge is in contact with the skin surface when in use, and the straight edge is in contact with the skin surface when in use. The skin surface is vertical, and the bottom edge forms a 90-degree angle with the straight edge. 3. A kind of auxiliary device for ultrasonically guided out-of-plane needle insertion according to claim 2, characterized in that, the bottom edges of the two groups of fan-shaped frames are fixedly connected by the bottom surface, and the straight sides of the two groups of fan-shaped frames are fixedly connected by straight faces, by The two sets of fan-shaped frames, the bottom surface, and the straight face form an accommodation space, and the accommodation space is an open structure at the arc surfaces of the two sets of fan-shaped frames, and the conduit is arranged in the accommodation space. 4. An auxiliary device for ultrasonic guidance of out-of-plane needle insertion according to claim 3, characterized in that, a guide hole communicating with the accommodation space and the outside is provided at the angle between the bottom surface and the straight surface; one end of the catheter is provided with in the pilot hole. 5. An auxiliary device for ultrasonic guidance of out-of-plane needle insertion according to any one of claims 1-4, characterized in that, the fan-shaped frame is provided with an arc surface, and the arc surface is provided with a plurality of along arc surfaces. Regularly arranged positioning slots, each positioning slot is set corresponding to the scale, and the other end of the catheter is provided with a positioning rod, and the positioning rod is correspondingly placed in the positioning slot. 6. An auxiliary device for ultrasound-guided out-of-plane needle insertion according to claim 5, wherein the catheter comprises a lower tube, an upper tube, and a positioning rod, and the lower end of the lower tube is placed in the guide hole , the upper end of the lower tube is socketed with the lower part of the upper tube, positioning rods are arranged on both sides of the upper part of the upper tube along the radial direction, and the positioning rods and the upper tube form a "T" shape. 7. An auxiliary device for ultrasound-guided out-of-plane needle insertion according to claim 6, characterized in that, the sleeve is in such a way that the inner diameter of the lower tube is larger than the outer diameter of the upper tube, and the upper end of the lower tube is sleeved The lower part of the upper tube can slide freely between the upper tube and the lower tube. 8. An auxiliary device for ultrasound-guided out-of-plane needle insertion according to claim 6, characterized in that, the way of socketing is that the inner diameter of the upper tube is larger than the outer diameter of the lower tube, and the lower part of the upper tube is sleeved The upper end of the lower tube can slide freely between the upper tube and the lower tube.

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