CN211022985U - Puncture positioning device in ultrasonic plane - Google Patents
Puncture positioning device in ultrasonic plane Download PDFInfo
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- CN211022985U CN211022985U CN201921021562.9U CN201921021562U CN211022985U CN 211022985 U CN211022985 U CN 211022985U CN 201921021562 U CN201921021562 U CN 201921021562U CN 211022985 U CN211022985 U CN 211022985U
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Abstract
The utility model relates to an ultrasonic in-plane puncture positioning device, which comprises a telescopic arm, wherein the fixed end of the telescopic arm is provided with a clamp, the axial center line of the clamp is superposed with the central axis of an ultrasonic probe, and the transverse axis of the telescopic arm is vertical to the central axis; the telescopic end of the telescopic arm is provided with a rotating mechanism, the rotating mechanism is provided with a positioning piece, and the rotating mechanism drives the axis of the positioning piece to rotate in a plane determined by the transverse axis and the central axis; the ultrasonic puncture device is provided with a microcomputer, the ultrasonic machine measures the vertical distance between the intersection point of the central axis and the skin and the puncture terminal, the microcomputer calculates the rotation angle of the rotating mechanism according to the input vertical distance data and the horizontal distance data between the intersection point and the puncture starting point, and the rotating mechanism drives the positioning piece to be coincided with the straight line determined by the puncture starting point and the puncture terminal. The utility model discloses a flexible arm, rotary mechanism and microcomputer etc. can realize the rotation of the setting element of location pjncture needle to the puncture angle of accurate positioning pjncture needle.
Description
Technical Field
The utility model relates to a puncture positioning device, a puncture positioner in supersound plane specifically says so.
Background
In ultrasound-guided puncture, there are a distinction between ultrasound in-plane puncture (the puncture needle is located in the imaging plane of the ultrasound probe) and ultrasound out-of-plane puncture (the puncture needle is located outside the imaging plane of the ultrasound probe), depending on the relative positions of the puncture needle and the ultrasound probe. Ultrasonic out-of-plane venipuncture is widely used because it completely shows the path of the needle and the position of the needle tip, as opposed to ultrasonic out-of-plane venipuncture. In the case of the in-plane ultrasound method, since the puncture needle can be imaged on the ultrasound screen only by moving in the imaging plane of the ultrasound probe to reach the target site, the needle insertion point and the needle insertion direction of the puncture needle need to be strictly controlled. At present, most puncture needle positioning devices applied to ultrasonic in-plane puncture only consider a needle inlet point, do not accurately reach a puncture angle, a puncture length and the like, and can cause the phenomenon of inaccurate puncture, multiple times of puncture and unnecessary tissue damage, thereby increasing the pain of patients.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a can guarantee puncture more accurate supersound plane in puncture positioner.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: an ultrasonic in-plane puncture positioning device comprises a telescopic arm capable of transversely stretching, wherein a clamp for clamping an ultrasonic probe of an ultrasonic machine is arranged at the fixed end of the telescopic arm, the axial center line of the clamp is overlapped with the central axis of the ultrasonic probe, and the transverse axis of the telescopic arm is perpendicular to the central axis; the telescopic end of the telescopic arm is provided with a rotating mechanism, the rotating mechanism is provided with a positioning piece capable of positioning the puncture needle, and the rotating mechanism drives the axis of the positioning piece to rotate in a plane determined by the transverse axis and the central axis; the ultrasonic puncture device is provided with a microcomputer, the ultrasonic machine measures the vertical distance between the intersection point of the central axis and the skin and the puncture terminal, the microcomputer calculates the rotation angle of the rotating mechanism according to the input vertical distance data and the horizontal distance data between the intersection point and the puncture starting point, and the rotating mechanism drives the axis of the positioning piece to rotate to be coincident with the straight line determined by the puncture starting point and the puncture terminal according to the rotation angle.
Preferably, the processing center is provided with the microcomputer, the processing center comprises the microcomputer, the horizontal distance data is measured through the telescopic arm, the horizontal distance data and the vertical distance data are transmitted to the processing center, the processing center transmits the data to the microcomputer, the microcomputer calculates a rotation angle according to the pythagorean theorem and then transmits the rotation angle to the processing center, and the processing center controls the rotation mechanism to rotate according to the rotation angle.
Preferably, the telescopic arm is an electric telescopic arm, a displacement sensor is arranged on the telescopic arm, the displacement sensor detects the distance between the end point of the telescopic end of the telescopic arm and the central axis, and distance data are sent to the processing center.
Preferably, the rotating mechanism comprises a rotating shaft arranged at the telescopic end of the telescopic arm and a servo motor for driving the rotating shaft to rotate, the axis of the rotating shaft is perpendicular to the transverse axis of the telescopic arm, the end point of the telescopic end of the telescopic arm is located on the axis of the rotating shaft, and the servo motor controls the rotating angle of the rotating shaft according to the rotating angle information of the processing center.
Preferably, the rotating shaft is provided with the positioning piece.
Preferably, the positioning piece is a positioning through hole formed in the rotating shaft, the puncture needle can be inserted into the positioning through hole, the axis of the positioning through hole is perpendicular to the axis of the rotating shaft, and the axis of the positioning through hole passes through the end point of the telescopic end.
Preferably, a positioning sleeve is coaxially and fixedly arranged in the positioning through hole, and the puncture needle can be inserted into the positioning sleeve.
According to the technical scheme provided by the utility model, the utility model discloses a flexible arm, rotary mechanism and microcomputer etc. can realize the rotation of the setting element of location pjncture needle to the puncture angle of accurate positioning pjncture needle, and fix the puncture route of pjncture needle in the plane of supersound scanning, even do not have the doctor who contacts the supplementary puncture of supersound or the doctor that the hand can not control steadily and space imagination ability is not strong, also can be fast accurate go up the hand, better service patient.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of the present invention.
Fig. 2 is a schematic top view of a portion of fig. 1.
Detailed Description
The present invention will be described in detail with reference to fig. 1 and 2, and the exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
The utility model provides a puncture positioner in ultrasonic plane, including the flexible arm 1 that can transversely stretch out and draw back, the stiff end of this flexible arm is equipped with the clamp 2 that presss from both sides the ultrasonic probe 6 of tight supersound machine, makes ultrasonic probe and clamp not take place relative motion, and adopts the clamp still convenient dismantlement, does benefit to ordinary supersound puncture. The axial center line of the hoop coincides with the central axis of the ultrasonic probe, and the transverse axis of the telescopic arm is perpendicular to the central axis, so that the telescopic arm is perpendicular to the ultrasonic probe; the telescopic end of the telescopic arm is provided with a rotating mechanism 3, the rotating mechanism moves along with the telescopic arm, the rotating mechanism is provided with a positioning piece capable of positioning the puncture needle, and the rotating mechanism drives the axis of the positioning piece to rotate in the plane determined by the transverse axis and the central axis, so that the puncture needle is positioned in the plane determined by the ultrasonic probe and the telescopic arm.
The utility model discloses still be equipped with the microcomputer, the supersound machine is measured the crossing point C of axis and skin is to the perpendicular distance between the puncture terminal point B, and the puncture terminal point is the puncture target promptly, also is the target point that the pjncture needle reachd, and the supersound machine can measure the target point degree of depth through the supersound principle, and this is prior art, does not give unnecessary details here. The utility model discloses a target point degree of depth is the crossing point of ultrasonic probe axis and skin to the perpendicular distance between the target point. In the implementation process, the horizontal distance from the intersection point to the puncture starting point A can be measured, and manual measurement, automatic machine measurement and the like can be adopted; then, the vertical distance data and the horizontal distance data are manually or automatically input into the microcomputer, so that the angle of the rotating mechanism which needs to rotate can be calculated, the rotating mechanism drives the axis of the positioning piece to rotate according to the rotating angle to be coincided with the straight line determined by the puncture starting point and the puncture terminal point, the needle inserting angle of the puncture needle is determined, and a doctor can reach a target point only by pushing the puncture needle along the positioning piece.
As preferred, the utility model discloses still be equipped with processing center, this processing center includes microcomputer and processing chip etc. and processing chip basis the utility model discloses a design intention realizes very easily, need not overcome any technical obstacle. In the implementation process, horizontal distance data are measured through the telescopic boom, particularly, the telescopic boom is an electric or pneumatic or hydraulic telescopic boom such as an air cylinder or a hydraulic cylinder, a displacement sensor is arranged on the telescopic boom and used for detecting the distance between the end point of the telescopic boom and the central axis, and distance data are sent to the processing center. For example, the distance from the end point of the telescopic end to the central axis when the telescopic arm is not extended is set as a length base number, the extension amount of the telescopic arm is detected by the displacement sensor, and the length base number plus the extension amount is set as the horizontal distance. In the operation process, after the puncture starting point is determined, the horizontal distance can be obtained only by extending the telescopic arm to be right above the puncture starting point. And then transmitting the horizontal distance data and the vertical distance data to the processing center, transmitting the data to the microcomputer by the processing center, controlling the rotating mechanism to rotate after the microcomputer calculates the rotating angle according to the Pythagorean theorem, or transmitting the information of the rotating angle back to the processing center, and controlling the rotating mechanism to rotate by the processing center according to the rotating angle. In the implementation process, a straight line where the vertical distance and the horizontal distance are located forms a right angle, namely, the intersection point, the puncture starting point and the puncture terminal point form a right triangle, the included angle between the bevel edge and the horizontal distance, namely the needle insertion angle, can be calculated according to the pythagorean theorem, the length of the bevel edge, namely the length between the puncture starting point and the puncture terminal point, and the puncture length can be accurately obtained, so that the purpose of accurately positioning to the puncture starting point, the puncture angle, the puncture length and the puncture terminal point is realized.
Preferably, the rotating mechanism comprises a rotating shaft 31 arranged at the telescopic end of the telescopic arm and a servo motor 32 driving the rotating shaft to rotate, the axis of the rotating shaft is perpendicular to the transverse axis of the telescopic arm, and the end point of the telescopic end of the telescopic arm is positioned on the axis of the rotating shaft, so that the accuracy of angle measurement is ensured; and the servo motor controls the rotation angle of the rotating shaft according to the rotation angle information of the processing center. Specifically, the rotating shaft is provided with the positioning piece which is a positioning through hole 4 arranged on the rotating shaft, and the puncture needle can be inserted into the positioning through hole and is ensured to be coaxial with the positioning through hole; the axis of the positioning through hole is perpendicular to the axis of the rotating shaft, and the axis of the positioning through hole passes through the end point of the telescopic end, so that the positioning through hole rotates around the end point of the telescopic end all the time, and the precision of the rotating angle is further ensured. In the implementation process, a positioning sleeve 5 can be coaxially and fixedly arranged in the positioning through hole, and the puncture needle is coaxially inserted into the positioning sleeve, so that the puncture is further facilitated. When the rotating shaft rotates to the calculated rotating angle, the position where the axis of the positioning through hole is parallel to the central axis is required to be the initial angle position.
In the operation process, because a certain fixed distance exists between the hoop and the intersection point, after the rotation angle is calculated and the rotating shaft is rotated, the processing center calculates the corrected elongation of the telescopic arm according to the principle of a similar triangle, namely the distance between the intersection point of the extension line of the hypotenuse of the right triangle and the transverse axis and the projection point of the puncture starting point on the transverse axis, when the telescopic end point of the telescopic arm is positioned right above the puncture point, the telescopic arm continues to extend for a corresponding length according to the corrected elongation calculated by the processing center, and the puncture needle is ensured to be positioned on the extension line of the hypotenuse of the right triangle. In the implementation process, the puncture length of the puncture needle can be determined in a scale mode, the puncture length is calculated by the puncture starting point of the puncture needle contacting with the skin, and then the length of the hypotenuse of the puncture needle is pushed, so that the target point can be reached.
The utility model discloses a positioning hole or position sleeve can obtain puncture length through calculating with the pjncture needle location on accurate puncture angle simultaneously, have really realized the accurate positioning of "puncture starting point, puncture angle, puncture length, puncture terminal point", have ensured the precision of puncture, have reduced patient's misery. The device is not only simple to operate, but also fast and accurate, and saves manpower.
Claims (7)
1. The utility model provides an supersound plane internal puncture positioner, includes the flexible arm that can transversely stretch out and draw back, its characterized in that: the fixed end of the telescopic arm is provided with a hoop for clamping an ultrasonic probe of an ultrasonic machine, the axial center line of the hoop is superposed with the central axis of the ultrasonic probe, and the transverse axis of the telescopic arm is perpendicular to the central axis; the telescopic end of the telescopic arm is provided with a rotating mechanism, the rotating mechanism is provided with a positioning piece capable of positioning the puncture needle, and the rotating mechanism drives the axis of the positioning piece to rotate in a plane determined by the transverse axis and the central axis; the ultrasonic puncture device is provided with a microcomputer, the ultrasonic machine measures the vertical distance between the intersection point of the central axis and the skin and the puncture terminal, the microcomputer calculates the rotation angle of the rotating mechanism according to the input vertical distance data and the horizontal distance data between the intersection point and the puncture starting point, and the rotating mechanism drives the axis of the positioning piece to rotate to be coincident with the straight line determined by the puncture starting point and the puncture terminal according to the rotation angle.
2. The ultrasonic in-plane puncture positioning device of claim 1, wherein: the processing center is provided with the microcomputer, the processing center comprises the microcomputer, the horizontal distance data are measured through the telescopic arm, the horizontal distance data and the vertical distance data are transmitted to the processing center, the processing center transmits the data to the microcomputer, the microcomputer calculates a rotation angle according to the pythagorean theorem and then transmits the rotation angle to the processing center, and the processing center controls the rotation mechanism to rotate according to the rotation angle.
3. The ultrasonic in-plane puncture positioning device of claim 2, wherein: the telescopic boom is an electric telescopic boom, a displacement sensor is arranged on the telescopic boom and used for detecting the distance between the end point of the telescopic end of the telescopic boom and the central axis and sending the distance data to the processing center.
4. The apparatus according to claim 3, wherein: the rotating mechanism comprises a rotating shaft arranged at the telescopic end of the telescopic arm and a servo motor for driving the rotating shaft to rotate, the axis of the rotating shaft is perpendicular to the transverse axis of the telescopic arm, the end point of the telescopic end of the telescopic arm is located on the axis of the rotating shaft, and the servo motor controls the rotating angle of the rotating shaft according to the rotating angle information of the processing center.
5. The apparatus according to claim 4, wherein: the rotating shaft is provided with the positioning piece.
6. The ultrasonic in-plane puncture positioning device of claim 5, wherein: the locating piece is set up for changeing epaxial positioning hole, and the pjncture needle can insert this positioning hole, this positioning hole's axis with the axis of pivot is perpendicular, and positioning hole's axis passes through flexible end extreme point.
7. The ultrasonic in-plane puncture positioning device of claim 6, wherein: and a positioning sleeve is coaxially and fixedly arranged in the positioning through hole, and the puncture needle can be inserted into the positioning sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921021562.9U CN211022985U (en) | 2019-07-03 | 2019-07-03 | Puncture positioning device in ultrasonic plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921021562.9U CN211022985U (en) | 2019-07-03 | 2019-07-03 | Puncture positioning device in ultrasonic plane |
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| Publication Number | Publication Date |
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| CN211022985U true CN211022985U (en) | 2020-07-17 |
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| CN201921021562.9U Active CN211022985U (en) | 2019-07-03 | 2019-07-03 | Puncture positioning device in ultrasonic plane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110313979A (en) * | 2019-07-03 | 2019-10-11 | 中南大学湘雅医院 | Puncture positioning device in a kind of plane of ultrasound |
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- 2019-07-03 CN CN201921021562.9U patent/CN211022985U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110313979A (en) * | 2019-07-03 | 2019-10-11 | 中南大学湘雅医院 | Puncture positioning device in a kind of plane of ultrasound |
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