Ultrasonic-guided out-of-plane puncture guide frame

Abstract

The utility model provides an ultrasound-guided out-of-plane puncture guide frame, and relates to the technical field of medical instruments. The guide frame is mounted on the ultrasonic probe, and the section of the wide surface of the ultrasonic probe is defined as a section I; the guide frame comprises a fixing seat, a measuring scale and a marking seat which are sequentially arranged from bottom to top, the fixing seat is matched with the ultrasonic probe and fixedly connected with the ultrasonic probe, the measuring scale is connected with the fixing seat, and the marking seat is in sliding fit with the measuring scale; the section of the wide surface of the measuring ruler is defined as a second section, and the second section is parallel to the first section. According to the guide frame, the puncture direction of the puncture needle can be determined directly based on the point located on the edge of the ultrasonic probe and the point determined by the marking base, the puncture needle directly punctures the preset puncture distance in the puncture direction, and accurate positioning is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field more particularly, relate to a kind of ultrasonic guiding plane outer puncture guiding frame. BACKGROUND

[0002] In the ultrasound-guided puncture, according to the relative position of puncture needle and ultrasound probe, it can be divided into in-plane puncture technology (puncture needle and ultrasound probe long axis parallel) and plane outer puncture technology (puncture needle and ultrasound probe long axis vertical), and the ultrasound-guided plane outer puncture refers to the puncture process that puncture needle as a whole or locally is carried out outside the sound beam emitted by ultrasound under the guidance of ultrasound, and the advantages are: short puncture path, clear anatomical adjacency between target area and surrounding tissue;Disadvantages: because puncture needle path is more complex, it has been plagued the popularization of this technology.

[0003] Traditional positioning method estimates the angle of needle insertion to position, for example, 202010065104.6 discloses an ultrasound plane outer puncture frame vertically arranged with the side end of ultrasound probe, the puncture frame includes a stretching member for measuring the lateral distance between the puncture frame and the center of ultrasound probe, and a second fixing member for movably arranging the puncture needle, the angle of needle insertion and the puncture distance are directly observed and adjusted in real time through the second fixing member. The puncture frame needs to calculate the angle of needle insertion and then calculate the depth of needle insertion in the process of use, and two-dimensional information needs to be considered in actual use, if the angle of needle insertion deviates, the depth of needle insertion is also affected, so it cannot completely solve the problem of ultrasound-guided plane outer puncture, and the target point to be measured cannot be accurately positioned. At present, there is no positioning and guiding device for the puncture direction of plane outer puncture on the market, and the operation method of medical staff still needs to be relied on in the puncture process, but the cultivation period of skilled operators is long and there is an inevitable error rate, which is not conducive to the popularization and application of ultrasound plane outer puncture technology. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the technical problems existing in the prior art. To this end, the utility model provides an ultrasound-guided plane outer puncture guiding frame, which can directly determine the puncture direction of the puncture needle based on the point determined by the point located at the edge of the ultrasound probe and the marking seat, the puncture needle directly punctures the predetermined puncture distance along the puncture direction, and accurate positioning is realized.

[0005] The utility model discloses an ultrasound-guided plane outer puncture guiding frame, the cross section of the wide surface of the ultrasound probe is defined as cross section one, the guiding frame includes fixing seat, measuring scale and marking seat arranged in sequence from bottom to top, the fixing seat is adapted to the ultrasound probe and is fixedly connected with the ultrasound probe, the measuring scale is connected with the fixing seat, and the marking seat is in sliding fit with the measuring scale, the cross section of the wide surface of the measuring scale is defined as cross section two, and the cross section two is parallel to the cross section one.

[0006] In some embodiments, the fixing seat is provided at least one, the lower surface of the fixing seat is adapted to the surface where the ultrasonic probe is located, the height of the fixing seat is determined according to the thickness of the position where the ultrasonic probe is installed, and the height of the fixing seat ensures that the second cross section is parallel to the first cross section.

[0007] In some more specific embodiments, the fixing seat is provided as one, which is arranged between the first end and the second end of the ultrasonic probe; the lower surface of the fixing seat is provided as a curved surface adapted to the surface of the ultrasonic probe, and the upper surface of the fixing seat is provided as a plane parallel to the second cross section.

[0008] In some more specific embodiments, the fixing seat is provided as two, including a first fixing ring arranged near the first end of the ultrasonic probe and a second fixing ring arranged near the second end of the ultrasonic probe; the thickness of the side connected to the measuring scale of the first fixing ring and the second fixing ring is determined according to the thickness of the position where the ultrasonic probe is installed, and the thickness of the side connected to the measuring scale of the first fixing ring and the second fixing ring ensures that the plane where the measuring scale arranged on the upper end of the first fixing ring and the second fixing ring is parallel to the first cross section.

[0009] In some embodiments, the surface of the measuring scale is provided with a scale line, and the 0 scale line is located at the second end of the ultrasonic probe, which is the detection end; the 0 scale line is flush with the edge of the detection end.

[0010] In some embodiments, there is a gap between the surface of the measuring scale and the surface of the detection end of the ultrasonic probe or no gap.

[0011] In some more specific embodiments, if there is no gap, the height of the marking seat and the measuring scale in the vertical direction is equal to one half of the length of the side of the ultrasonic probe.

[0012] In some more specific embodiments, if there is a gap, the height of the marking seat and the measuring scale in the vertical direction is equal to the sum of one half of the length of the side of the ultrasonic probe and the distance of the gap.

[0013] In some embodiments, the connection mode of the marking seat and the measuring scale includes friction sliding connection or connection through the arrangement of fasteners.

[0014] In some embodiments, the connection mode of the measuring scale and the fixing seat includes integral connection or detachable connection.

[0015] The present application has the following beneficial effects:

[0016] 1. The application innovatively sets a guide frame capable of being installed on the ultrasound probe on the wide outer side of the ultrasound probe, the guide frame is installed on the ultrasound probe through a fixing seat, the thickness of the fixing seat is set to ensure that the wide surface of the measuring scale is always parallel to the section plane, thereby ensuring that the puncture direction of the guide puncture needle can be determined through the marking seat and the measuring scale; the puncture direction is determined in this way, and the traditional method of determining the needle insertion direction by the angle between the puncture needle and the ultrasound probe is abandoned, which has the problems of inaccurate relationship between the angle and the depth in actual operation, difficulty in control, inconvenience in adjustment, difficulty in understanding, and difficulty in learning. The guide frame is simple and effective, easy to operate, more flexible during surgery, has high one-time puncture success rate, and promotes the popularization and application of out-of-plane puncture.

[0017] 2. The application innovatively discloses a method for determining the puncture direction of a puncture needle based on a point located on the edge of an ultrasound probe and a point determined by a marking seat, the puncture needle directly punctures a predetermined puncture distance along the puncture direction, precise positioning is achieved, the principle is simpler and easier to understand, the operation is more accurate and flexible, and the problem of difficulty in ultrasound-guided out-of-plane puncture is completely solved.

[0018] 3. The application also considers the relationship between the gap between the measuring scale and the ultrasound probe and the relationship between the needle insertion direction and the needle insertion depth, to further ensure more accurate positioning.

[0019] 4. By determining the length of the base of a right triangle, the puncture depth is estimated, the guide frame is adjusted to the same height, the needle is inserted, the needle insertion depth can be calculated by the formula a2+b2=c2 of the triangle side length, which is approximately equal to the estimated puncture depth, and the error range is within 2mm. This method is simple and effective, easy to understand and master, has high accuracy, is convenient to adjust, and is suitable for promotion. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0021] Figure 1 A schematic view of the ultrasound-guided out-of-plane puncture guide frame provided by at least one embodiment of the present application when fixed on an ultrasound probe;

[0022] Figure 2 A schematic view of the ultrasound-guided out-of-plane puncture guide frame in the present application when the fixing seat is set to one;

[0023] Figure 3 A schematic view of the ultrasound-guided out-of-plane puncture guide frame in the present application when the fixing seat is set to two;

[0024] Figure 4 The simulation needle insertion schematic diagram when the ultrasonic probe is operated is provided for at least one embodiment of the utility model;

[0025] Figure 5 The simulation needle insertion schematic diagram when the puncture depth is changed is provided for at least one embodiment of the utility model;

[0026] In the drawing, 1, ultrasonic probe;2, fixed seat;21, first fixed ring;22, second fixed ring;3, measuring scale;4, mark seat. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be described clearly and completely below by means of specific, concrete embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. The utility model can also be implemented or applied by means of other different specific embodiments. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] The embodiments of the present disclosure and examples thereof will be described in detail below with reference to the accompanying drawings.

[0029] Figure 1 The schematic diagram when the ultrasonic guided out-of-plane puncture guiding frame is fixed on the ultrasonic probe is provided in the embodiments, and the specific embodiment provides an ultrasonic guided out-of-plane puncture guiding frame;The guiding frame is installed on the ultrasonic probe, and the cross section of the wide surface of the ultrasonic probe is defined as cross section one;The guiding frame comprises a fixed seat, a measuring scale and a mark seat arranged in sequence from bottom to top, the fixed seat is adapted to the ultrasonic probe and is fixedly connected with the ultrasonic probe, the measuring scale is connected with the fixed seat, and the mark seat is in sliding fit with the measuring scale;The cross section of the wide surface of the measuring scale is defined as cross section two, and the cross section two is parallel to the cross section one.

[0030] In some embodiments, the fixed seat is provided at least one, the lower surface of the fixed seat is adapted to the surface where the ultrasonic probe is located, the height of the fixed seat is determined according to the thickness of the position where the ultrasonic probe is installed and fixed, and the height of the fixed seat ensures that the cross section two is parallel to the cross section one. The upper surface of the fixed seat is parallel to the cross section two.

[0031] For example, as shown in Figure 1 and Figure 2As shown, in one embodiment, the fixing seat is provided as one, which is arranged between the first end and the second end of the ultrasonic probe; the lower surface of the fixing seat is provided as a curved surface matched with the surface of the ultrasonic probe, and the upper surface of the fixing seat is provided as a plane parallel to the second cross section.

[0032] In one embodiment, as shown in the drawings, the surface of the measuring scale is provided with a scale line, and the 0 scale line is located at the second end of the ultrasonic probe, i.e. the detection end; the 0 scale line is flush with the edge of the detection end. Figure 1

[0033] In one specific embodiment, the connecting mode of the measuring scale and the fixing seat includes integral connection or detachable connection.

[0034] In another specific embodiment, the connecting mode of the marking seat and the measuring scale includes friction sliding connection or connection through a fastener. Figure 1 The fastener is provided as a screw, and when the marking seat is slid to the corresponding position, the relative position between the marking seat and the measuring scale is fixed by tightening the screw. The friction sliding connection mode is specifically that straight plates with friction with the long side of the measuring scale are respectively arranged on both sides of the marking seat, and the relative position between the marking seat and the measuring scale is fixed by moving the marking seat and the straight plates, and the straight plates cover the long side of the measuring scale. This connection mode is not shown in the drawings.

[0035] Of course, in some examples, the implementation modes of the connecting mode are various, and cannot be exhaustively listed in this application.

[0036] Figure 3 is a schematic view of the fixing seat provided in the ultrasonic guided out-of-plane puncture guide frame in this embodiment, and the fixing seat is provided as two, including a first fixing ring close to the first end of the ultrasonic probe and a second fixing ring close to the second end of the ultrasonic probe; the thickness of the fixing seat connected to the side of the measuring scale is determined according to the thickness of the fixing ring installed on the ultrasonic probe, and the thickness of the fixing seat connected to the side of the measuring scale ensures that the plane of the measuring scale provided on the upper end of the first fixing ring and the second fixing ring is parallel to the first cross section. More specifically, the connecting columns with different heights are provided on the upper ends of the first fixing ring and the second fixing ring to ensure that the plane of the measuring scale is parallel to the first cross section.

[0037] In one embodiment, there is a gap between the surface of the measuring scale and the surface of the detection end of the ultrasonic probe or no gap.

[0038] ​In some more specific embodiments, if there is no gap, the height of the marking seat and the measuring scale in the vertical direction is equal to half the length of the side of the ultrasound probe.

[0039] In some more specific embodiments, if there is a gap, the height of the marking seat and the measuring scale in the vertical direction is equal to the sum of half the length of the side of the ultrasound probe and the gap distance.

[0040] Figure 4 The simulation needle insertion diagram when the ultrasound probe is operated is provided for at least one embodiment of the utility model, and a horizontal line is marked as a display section; in use, the ultrasound probe and the guide frame are integrated, the support and the probe are integrated, the midpoint line of the probe ultrasonic beam is assumed as a longitudinal axis DAC, the longitudinal axis also inclines when the probe inclines, and the angle of the front view is taken as an example of the narrow side of the ultrasound probe; during the puncture process outside the ultrasonic guide plane, the probe and the 90 degrees of the angle BAC are fixed, the ultrasound probe contacts the skin so that the operator can see the internal structure of the human body, finds the puncture target, and inserts the needle along the short axis of the probe; the use method is as follows: step 1, the model of the ultrasound probe is obtained, the projection point of the midpoint of the detection end edge of the narrow side of the ultrasound probe in the horizontal axis direction of the ultrasound probe is A point, the transmission point of the detection end edge of the wide side of the ultrasound probe in the horizontal axis direction of the ultrasound probe is B point, the half length AB of the length of the side of the ultrasound probe is calculated according to the model of the ultrasound probe, and is marked as b1; the plane where the AB line is located is the horizontal axis of the surface of the probe; step 2, whether there is a gap between the upper surface of the measuring scale and the detection end surface of the ultrasound probe is judged; the height b2 of the marking seat and the measuring scale in the vertical direction is determined according to whether there is a gap to determine the E point; specifically, if there is a gap, b2 is equal to b1+gap distance; if there is no gap, b2 is equal to b1; in some embodiments, the height of the marking seat needs to consider the thickness of the measuring scale; if there is a gap, the height of the marking seat is equal to the sum of AB, the thickness of the measuring scale and the gap distance; if there is no gap, the height of the marking seat is equal to the sum of AB and the thickness of the measuring scale.

[0041] Step 3, measure the distance a1 between the target (tumor or blood vessel or other target) to be punctured and the skin by the ultrasound machine, and the position of the target to be punctured is point C, and a1 is equal to the distance between point A and point C; Step 3, slide the position of the marking seat relative to the measuring scale so that the marking seat is located at a2 of the measuring scale, and a2 is equal to a1; that is, the side of the marking seat close to the detection end is located at point D, and the distance between point D and point A is a2; Step 4, use the function calculation program of the background special calculation module to calculate the length of c1 according to a1 and b1 by the Pythagorean theorem, and the length of c1 is the distance between point B and the target C to be punctured, that is, the length of the puncture needle to be punctured; Step 5, along the direction determined by point E and point B, the puncture needle punctures c1 length from point B to reach the target to be punctured; in some embodiments, the model of the ultrasound probe is directly related to the length of the side of the ultrasound probe, for example, using a commonly used 4C probe, the puncture needle enters close to the edge of the probe B point, and the ultrasound plane is the midpoint of the probe. The distance between the two is the length of the line segment b1, which is 1 cm. The puncture needle always enters close to the edge of the probe, so this distance does not change. b1=1cm; similarly, when the distance of line segment AC is extended by 1 times, b2=2cm; as shown in Figure 5 C3 (blue line), C6 (black line), and C10 (red line) respectively. From C3, C6, and C10, respectively, an extension line is made through point B. Then the line segment AC is extended by 1 times, and a straight angle base is made at 3 cm, 6 cm, and 10 cm of the longitudinal axis of the ultrasound probe, respectively, to obtain the b2 line segment. Conclusion: regardless of the puncture depth, as long as the b2 line segment made on the same length of the longitudinal axis of the ultrasound probe is equal in length. Since the length of the b line segment is always equal to 1 cm, the length of the b2 line segment is equal to 2 cm.

[0042] Principle: percutaneous ultrasound-guided out-of-plane puncture is extended by 1 times on the longitudinal axis of the ultrasound probe outside the skin, for example, the puncture depth is 6 cm, and point D is found on the longitudinal axis at a height of 6 cm outside the skin; a 2 cm straight angle base is made at point D, and point E is found; puncturing through point E and point B to the deep part can accurately find point C (i.e. the puncture target point). Taking a puncture depth (a line segment) of 6 cm as an example, the length of the b line segment is 1 cm, and the formula for calculating the length of the side of a triangle a²+b²=c², so BC= ≈6.08cm. Through E point and B point to the deep puncture 6.08cm can find C point accurately. Any puncture depth in the figure, apply the calculation. In the actual operation process, sometimes the human rib, blood vessels, organs and other sandwiched between the ultrasound probe and puncture target, if just in the vertical line, need to avoid them to change a place to needle, this time will have a certain angle (tilt) with the skin, will cause the contact area of the probe surface and the skin is reduced, but the reduction is generally not greater than 1 / 3 of the probe area (contact too little to see the internal structure of the human body); That is, the probe tilt can, but can not tilt too much, the probe surface at least to contact 2 / 3 of the skin. The calculation method is for the probe, fixed, the probe and skin tilt when the calculation method does not change. After tilt AC distance will increase, if it is by vertical to tilt puncture, need to measure the pre-puncture depth once again.

[0043] The following points need to be explained:

[0044] (1) The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can be referred to the usual design.

[0045] (2) In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined to obtain new embodiments.

[0046] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure should be subject to the protection scope of the claims.

[0047] The above description of the embodiments is only for understanding the present utility model. It should be noted that for ordinary skilled in the art, without departing from the principles of the present utility model, the present utility model can be improved, and these improvements will fall within the scope of protection of the claims of the present utility model.

Claims

1. An ultrasound-guided out-of-plane puncture guide, the guide being mounted on an ultrasound probe, the ultrasound probe broadside cross-section being defined as cross-section one; characterized by, The guiding frame comprises a fixing seat, a measuring scale and a marking seat arranged in sequence from bottom to top, the fixing seat is adapted to the ultrasonic probe and fixedly connected with the ultrasonic probe, the measuring scale is connected with the fixing seat, and the marking seat is in sliding fit with the measuring scale; the cross section of the wide surface of the measuring scale is defined as cross section two, and the cross section two is parallel to the cross section one.

2. The ultrasound-guided off-plane puncture guide of claim 1, wherein, The fixing seat is arranged at least one, the lower surface of the fixing seat is adapted to the surface of the position where the ultrasonic probe is located, the height of the fixing seat is determined according to the thickness of the position where the ultrasonic probe is installed, and the height of the fixing seat ensures that the cross section two is parallel to the cross section one.

3. The ultrasound-guided off-plane puncture guide of claim 2, wherein, The fixing seat is arranged one, which is arranged between the first end and the second end of the ultrasonic probe; the lower surface of the fixing seat is arranged as a curved surface adapted to the surface of the ultrasonic probe, and the upper surface of the fixing seat is arranged as a plane parallel to the cross section two.

4. The ultrasound-guided off-plane puncture guide of claim 2, wherein, The fixing seat is arranged two, including a first fixing ring arranged close to the first end of the ultrasonic probe and a second fixing ring arranged close to the second end of the ultrasonic probe; the thickness of the side connected with the measuring scale of the first fixing ring and the second fixing ring is determined according to the thickness of the position where the fixing ring is installed, and the thickness of the side connected with the measuring scale of the first fixing ring and the second fixing ring ensures that the plane where the measuring scale arranged on the upper end of the first fixing ring and the second fixing ring is parallel to the cross section one.

5. The ultrasound-guided out-of-plane puncture guide of claim 1, wherein, The surface of the measuring scale is provided with a scale line, the 0 scale line is located at the second end of the ultrasonic probe, and the second end is the detection end; the 0 scale line is flush with the edge of the detection end.

6. The ultrasound-guided off-plane puncture guide of claim 1, wherein, There is a gap between the surface of the measuring scale and the surface of the detection end of the ultrasonic probe or no gap.

7. The ultrasound-guided off-plane puncture guide of claim 6, wherein, If there is no gap, the height of the marking seat and the measuring scale in the vertical direction is equal to one half of the length of the side of the ultrasonic probe.

8. The ultrasound-guided out-of-plane puncture guide of claim 6, wherein, If there is a gap, the height of the marking seat and the measuring scale in the vertical direction is equal to the sum of one half of the length of the side of the ultrasonic probe and the distance of the gap.

9. The ultrasound-guided off-plane puncture guide of claim 1, wherein, The connection mode of the marking seat and the measuring scale includes friction sliding connection or connection through a fastener.

10. The ultrasound-guided off-plane puncture guide of claim 1, wherein, The connection mode of the measuring scale and the fixing seat includes integral connection or detachable connection.

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