CN218045291U

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

Info

Publication number: CN218045291U
Application number: CN202221466766.5U
Authority: CN
Inventors: 刘翠翠; 信文君; 徐婷; 吴伟; 何杏辉
Original assignee: Sun Yat Sen Memorial Hospital Sun Yat Sen University
Current assignee: Sun Yat Sen Memorial Hospital Sun Yat Sen University
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-12-16
Anticipated expiration: 2032-06-13

Abstract

The utility model discloses an auxiliary device of needle insertion outside ultrasonic wave guide plane for guide piercing depth pierces the injection target, include the auxiliary device body that uses with the ultrasonic transducer cooperation and set up the cavity pipe at the auxiliary device body, the auxiliary device body has the fan-shaped frame of two sets of fixed settings to constitute, and fan-shaped frame is 90 degrees, be equipped with the scale of sign angularly on the fan-shaped frame, the pipe is located between two sets of fan-shaped frames, pipe one end is located fan-shaped frame centre of a circle department, and the syringe needle passes the pipe and wears out from the centre of a circle and inserts in the skin. The needle inserting angle and the depth of the needle head are calculated by using a trigonometric function formed by two groups of 90-degree fan-shaped frames 21, and the needle inserting angle of the needle head is adjusted by using a fixing groove at the cambered surface 213 of the fan-shaped frames 21 and a positioning rod 33 of the catheter 3, so that the calculation is accurate, and the use is convenient.

Description

Auxiliary device for guiding out-of-plane needle insertion by ultrasonic waves

Technical Field

The utility model belongs to the technical field of medical instrument, specifically an ultrasonic wave guide plane is outer to be inserted auxiliary device of needle.

Background

Puncture, a method of diagnosing or treating a disease. Under rigorous sterilization, a blood vessel, body cavity or organ is punctured with different specially made puncture needles to extract fluid or tissue. The nature and pathological changes of the extracted liquid or tissue can be known through examination, so that the diagnosis is assisted, and medicines are injected through the puncture needle to achieve the purpose of treatment. The common puncture methods include venipuncture, arteriopuncture, lumbar puncture, thoracic puncture, abdominal puncture, pericardial puncture, bone marrow puncture, liver puncture, spleen puncture, kidney puncture, medulla oblongata puncture, lymph node puncture, joint puncture, maxillary sinus puncture and the like.

At present, the puncture operation is mostly manual puncture or manual puncture under the guidance of ultrasound and radiography, and the mode reflects a problem, namely adjustment of a puncture angle, although the puncture is assisted by the ultrasound and radiography modes, as shown in fig. 1, fig. 1 is a schematic diagram of a problem existing in the prior art, when an ultrasonic probe is used for probing, a probe is normally required to be close to the surface of the skin, so that the sound wave direction a is perpendicular to the surface of the skin, and a needle head of a puncture device 1 needs to be obliquely inserted into the skin, although the insertion length L ' of the needle head inserted into the skin can be known, as the included angle R ' between the needle head and the skin cannot be accurately known, only the guide of an ultrasonic device still has a larger error with an injection target point, particularly, the error is larger in a region with a deeper distance H ' between the injection target point and the surface of the skin.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ultrasonic wave guide plane external needle insertion's auxiliary device to solve the big problem of puncture angle error value among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: an ultrasonic guide plane out-of-plane needle insertion auxiliary device is used for guiding a puncture device to puncture an injection target point, and an ultrasonic probe 2 corresponding to the skin is used, and the ultrasonic guide plane out-of-plane needle insertion auxiliary device structurally comprises an auxiliary device body 2 and a guide pipe 3, wherein the auxiliary device body 2 consists of two groups of 90-degree fan-shaped frames 21, each fan-shaped frame 21 comprises a bottom edge 22 and a straight edge 23, and the bottom edge 22 and the straight edge 23 form an included angle of 90 degrees;

an arc surface 213 is arranged on the fan-shaped frame 21, a plurality of positioning grooves 212 regularly arranged along the arc surface 213 are arranged on the arc surface 213, and the positioning rod 33 in the guide tube 3 is placed in the positioning groove 212; a scale 211 is arranged on the fan-shaped frame 21 near the arc surface 213, the scale 211 can correspond to the positioning groove 212, and the scale 211 is marked from 0 to 90 degrees.

The bottom edges 22 of the two groups of 90-degree fan-shaped frames 21 are fixedly connected through the bottom surface 24, the straight edges 23 of the two groups of fan-shaped frames 21 are fixedly connected through the straight surfaces 25, an accommodating space 27 is formed by the two groups of fan-shaped frames 21, the bottom surface 24 and the straight surfaces 25, and the accommodating space 27 is of an open structure at the arc surface 213 of the two groups of fan-shaped frames 21;

a guide hole 26 communicated with the accommodating space 27 and the outside is arranged at the corner between the bottom surface 24 and the straight surface 25;

the utility model has the advantages that: the needle inserting angle and the depth of the needle head are calculated by using a trigonometric function formed by two groups of 90-degree fan-shaped frames 21, and the needle inserting angle of the needle head is adjusted by using a fixing groove at the cambered surface 213 of the fan-shaped frames 21 and a positioning rod 33 of the catheter 3, so that the calculation is accurate, and the use is convenient.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

Fig. 1 is a schematic diagram illustrating a technical problem in the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic view of a usage status of the present invention.

Fig. 4 is an enlarged view of fig. 3 at D.

Fig. 5 is a schematic diagram illustrating the usage principle of the present invention.

Fig. 6 is a schematic view of the adjustment of the pre-injection angle according to the embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-2, the present invention relates to an ultrasonic guided planar external needle insertion assisting device for guiding a puncture device 1 to penetrate an injection target, and using an ultrasonic probe 2 corresponding to skin, the structure of which comprises an assisting device body 2 and a catheter 3, wherein the assisting device body 2 comprises two groups of 90-degree fan-shaped frames 21, each fan-shaped frame 21 comprises a bottom edge 22 and a straight edge 23, as shown in fig. 1-2, the bottom edge 22 contacts with the skin surface when in use, is located at the bottom edge of fig. 1, the straight edge 23 is perpendicular to the skin surface when in use, and is perpendicular to the skin surface in fig. 1, and the bottom edge 22 and the straight edge 23 form a 90-degree included angle;

an arc surface 213 is arranged on the fan-shaped frame 21, a plurality of positioning grooves 212 regularly arranged along the arc surface 213 are arranged on the arc surface 213, each positioning groove 212 represents a fixed angle, and when the positioning device is used, the positioning rod 33 in the conduit 3 is placed in the positioning groove 212; a scale 211 is provided on the fan-shaped frame 21 near the arc surface 213, the scale 211 may correspond to the positioning groove 212, the scale 211 is marked from 0 to 90 degrees, and the following will explain how to use the scale 211.

The bottom edges 22 of the two groups of 90-degree fan-shaped frames 21 are fixedly connected through the bottom surface 24, the straight edges 23 of the two groups of fan-shaped frames 21 are fixedly connected through the straight surfaces 25, an accommodating space 27 is formed by the two groups of fan-shaped frames 21, the bottom surface 24 and the straight surfaces 25, and the accommodating space 27 is of an open structure at the cambered surface 213 of the two groups of fan-shaped frames 21;

the guide pipe 3 comprises a lower pipe 31, an upper pipe 32 and a positioning rod 33, wherein the lower pipe 31 and the upper pipe 32 are all of a hollow structure, when in use, the lower end 312 of the lower pipe 31 is placed in the guide hole 26, the upper end 311 of the lower pipe 31 is sleeved with the lower part of the upper pipe 32, the positioning rod 33 is arranged on two sides of the upper part of the upper pipe 32 along the radial direction, and the positioning rod 33 and the upper pipe 32 form a T shape;

the sleeving manner has two types:

1. the inner diameter of the lower pipe 31 is larger than the outer diameter of the upper pipe 32, the upper end 311 of the lower pipe 31 is sleeved on the lower part of the upper pipe 32, and the upper pipe 32 and the lower pipe 31 can freely slide;

2. the inner diameter of the upper tube 32 is larger than the outer diameter of the lower tube 31, the lower part of the upper tube 32 is sleeved in 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 1 st mode.

As shown in fig. 2, 3 and 6, the catheter 3 is used by sleeving the lower tube 31 and the upper tube 32, disposing the lower end 312 of the lower tube 31 in the guide hole 26, placing the positioning rod 33 into the positioning slot 212 at the right angle according to the required angle, and inserting 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 whole structure of the auxiliary device of this patent is small, the whole height (radius of the fan-shaped frame 21) is about 2cm, and the needle of the puncture device 1 is usually 5-10cm, so that the needle of the puncture device 1 is inserted into the skin after passing through the upper tube 32, the lower tube 31 and the guide hole 26 without any problem.

As shown in fig. 6, the reason for setting up the socket joint structure of lower tube 31 and upper tube 32 is that, when the angle that the positioning groove 212 corresponds needs to be adjusted, it is necessary to move the upper tube 32 along the arrow direction first, make the positioning rod break away from the positioning groove 212, and set up lower tube 31 and upper tube 32 into the socket joint structure, the depth that can only lower tube 31 and upper tube 32 cup joint is suitable, when the positioning rod breaks away from the positioning groove 212, it is good to guarantee that lower tube 31 and upper tube 32 cup joint not to depart from, if there is no socket joint structure, be about to lower tube 31 and upper tube 32 set up to a whole, when positioning rod 33 moves along the arrow direction and breaks away from positioning groove 212, cause the lower extreme 312 of lower tube 31 to drop from the guide hole 26 very easily, it is inconvenient to use.

As shown in fig. 3-5, the following is a detailed description of how this patent may be used:

when the ultrasonic puncture device is used, firstly, the ultrasonic device is fixed on one side of the straight surface 25, the direction a of sound waves emitted by the ultrasonic probe is vertical to the skin surface, the bottom surface 24 is placed on the skin, the depth H of an injection target point can be detected, wherein the combination point of the skin surface under the sound wave direction a is A, the injection target point C is, the contact point of the straight surface 25 and the skin surface is B (namely the insertion point of the needle of the puncture device 1 into the skin), a right-angled triangle BAC is formed, wherein the point A is a right angle, AC is equal to H, the distance of AB is a known fixed value, the depth CB (namely L in figure 6) of the needle of the puncture device 1 inserted into the skin and the angle of R2 can be calculated according to a trigonometric function, and because R2 is equal to R1, the angle of R1 is the included angle between the catheter 3 and the bottom surface 24;

according to the calculated angle of R1, the catheter 3 is adjusted to a proper angle, the needle head is inserted into the skin after penetrating through the upper tube 32, the lower tube 31 and the guide hole 26, the depth L of the needle head inserted into the skin is inserted according to the calculated value, and the needle head can be accurately inserted into the injection target point C.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it will be understood by those skilled in the art that the specification as a whole and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an auxiliary device of needle insertion outside ultrasonic wave guide plane for guide piercing depth pierces the injection target, its characterized in that, includes the auxiliary device body that uses with the ultrasonic transducer cooperation and sets up the cavity pipe at the auxiliary device body, the auxiliary device body has two sets of fixed fan-shaped frames that set up to constitute, and fan-shaped frame is 90 degrees, be equipped with the scale of sign angularly on the fan-shaped frame, the pipe is located between two sets of fan-shaped frames, pipe one end is located fan-shaped frame centre of a circle department, and the syringe needle passes the pipe and wears out from the centre of a circle and inserts in the skin.

2. The device of claim 1, wherein the fan-shaped frame comprises a bottom edge and a straight edge, the bottom edge contacts the skin surface during use, the straight edge is perpendicular to the skin surface during use, and the bottom edge forms an angle of 90 degrees with the straight edge.

3. The ultrasonic-guided needle insertion assisting device outside the plane as claimed in claim 2, wherein the bottom edges of the two sets of fan-shaped frames are fixedly connected through the bottom surface, the straight edges of the two sets of fan-shaped frames are fixedly connected through the straight surface, an accommodating space is formed by the two sets of fan-shaped frames, the bottom surface and the straight surface, the accommodating space is of an open structure at the arc surfaces of the two sets of fan-shaped frames, and the guide tube is disposed in the accommodating space.

4. The ultrasonic-guided needle insertion assisting device outside the plane as claimed in claim 3, wherein a guide hole for communicating the accommodating space with the outside is provided at a corner between the bottom surface and the straight surface; one end of the guide pipe is arranged in the guide hole.

5. The ultrasonic-guided needle insertion assisting device for the out-of-plane needle insertion according to any one of claims 1-4, wherein an arc surface is arranged on the fan-shaped frame, a plurality of positioning grooves are regularly arranged on the arc surface, each positioning groove is arranged corresponding to the scale, and a positioning rod is arranged at the other end of the catheter and is correspondingly arranged in the positioning groove.

6. The device of claim 5, wherein the guide tube comprises a lower tube, an upper tube and positioning rods, the lower end of the lower tube is placed in the guide hole, the upper end of the lower tube is sleeved with the lower portion of the upper tube, the positioning rods are arranged on two sides of the upper portion of the upper tube along the radial direction, and the positioning rods and the upper tube form a T shape.

7. The device as claimed in claim 6, wherein the lower tube is sleeved on the upper tube in such a way that the inner diameter of the lower tube is larger than the outer diameter of the upper tube, the upper end of the lower tube is sleeved on the lower portion of the upper tube, and the upper tube and the lower tube can slide freely.

8. The device as claimed in claim 6, wherein the upper tube is sleeved on the lower tube in such a way that the inner diameter of the upper tube is larger than the outer diameter of the lower tube, the lower part of the upper tube is sleeved on the upper end of the lower tube, and the upper tube and the lower tube can slide freely.