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CN-122004875-A - Telescopic detection needle and use method thereof

CN122004875ACN 122004875 ACN122004875 ACN 122004875ACN-122004875-A

Abstract

The invention provides a telescopic detection needle and a use method thereof, wherein the telescopic detection needle comprises a fixed sleeve, and the fixed sleeve is connected with a movable column in a sliding manner along the axial direction; the side of the movable column is provided with a scale groove, one end of the movable column is provided with a connecting seat, the connecting seat is provided with a detection needle, the other end of the movable column is provided with an external socket, the external socket is electrically connected with the detection needle and is used for externally connecting a detection system matched with the detection needle, one side of the fixed sleeve, which is close to the detection needle, is provided with a protective sleeve, and one side of the protective sleeve, which is far away from the fixed sleeve, is provided with an opening for the detection needle to go in and go out. According to the flexible detection needle, the flexible detection needle is provided with the rigid support through the telescopic structure, the stretching length and the penetrating depth of the detection needle can be accurately controlled by combining the visual design of the scale grooves, meanwhile, the positioning mechanism can fix the position of the movable column, the inclination of the penetrating direction is avoided, the detection precision and accuracy are effectively improved, and the problem that the existing flexible detection needle is difficult to accurately control the penetrating state is solved.

Inventors

  • YAN ZIBAO
  • XIAO JIABO
  • ZHANG JIAN

Assignees

  • 武汉中针智诊科技有限公司

Dates

Publication Date
20260512
Application Date
20260306

Claims (10)

  1. 1. The telescopic detection needle and the telescopic detection needle are characterized by comprising a fixed sleeve (1), wherein the fixed sleeve (1) is connected with a movable column (2) in a sliding manner along the axial direction; the side surface of the movable column (2) is provided with a scale groove (201); one end of the movable column (2) is provided with a connecting seat (202), the connecting seat (202) is provided with a detection needle (4), the other end of the movable column (2) is provided with an external socket (5), the external socket (5) is electrically connected with the detection needle (4), and the external socket (5) is used for externally connecting a detection system matched with the detection needle (4); One side of the fixed sleeve (1) close to the detection needle (4) is provided with a protective sleeve (3), one side of the protective sleeve (3) far away from the fixed sleeve (1) is provided with an opening, and the opening is used for the access of the detection needle (4).
  2. 2. The telescopic detection needle according to claim 1, wherein the end part of the fixed sleeve (1) is provided with a connecting ring (101), and the connecting ring (101) is provided with external threads; an internal thread (301) is arranged on the inner side of the protective sleeve (3), and the internal thread (301) is matched with the external thread; the protective sleeve (3) is connected with the fixed sleeve (1) through an internal thread (301) and an external thread; The connecting seat (202) is provided with a plug seat and a plug connector which are matched with each other, and the detecting needle (4) is connected with the connecting seat (202) in a plug-in mode through the plug seat and the plug connector.
  3. 3. The retractable detecting needle according to claim 1, characterized in that a positioning mechanism (6) is arranged between the movable column (2) and the fixed sleeve (1) for limiting the sliding of the movable column (2) relative to the fixed sleeve (1).
  4. 4. A retractable needle according to claim 3, wherein the positioning mechanism (6) comprises a first runner (611) provided on the side of the movable column (2); The middle part of the fixed sleeve (1) protrudes along the circumferential direction to form a fixed ring (612), the fixed ring (612) is in threaded connection with a first threaded rod (614), and two ends of the first threaded rod (614) are respectively provided with a first knob (613) and a first fastening block (615); the first knob (613) is positioned outside the fixed ring (612), the first fastening block (615) is positioned inside the fixed ring (612) and extends to the inside of the first chute (611); the contact surfaces of the first fastening block (615) and the first chute (611) are rough surfaces; A handle (203) is arranged on one side of the movable column (2) far away from the detection needle (4), and an external socket (5) is arranged on the side face of the handle (203).
  5. 5. A retractable needle according to claim 3, wherein the positioning mechanism (6) comprises a second chute (621) arranged on the side of the movable column (2); The outer side of the movable column (2) is connected with a movable ring (622) in a sliding manner, and the movable ring (622) is connected with a second threaded rod (624) in a threaded manner; two ends of the second threaded rod (624) are respectively provided with a second knob (623) and a second fastening block (625), the second knob (623) is positioned at the outer side of the movable ring (622), and the second fastening block (625) is positioned at the inner side of the movable ring (622) and extends into the second chute (621); the contact surfaces of the second fastening block (625) and the second chute (621) are rough surfaces; the outer diameter of the movable ring (622) is larger than the inner diameter of the fixed sleeve (1) and is not larger than the outer diameter of the fixed sleeve (1).
  6. 6. The telescopic detection needle according to claim 5, wherein a pushing mechanism (7) is arranged between the movable column (2) and the fixed sleeve (1) and is used for pushing the movable column (2) to slide; the propelling mechanism (7) comprises a limiting ring (701) fixed on the peripheral surface of the movable column (2); The movable column (2) is sleeved with a first spring (702), and the limiting ring (701) is positioned at one side of the first spring (702) close to the detection needle (4); a movable cavity is arranged in the fixed sleeve (1), the limiting ring (701) and the first spring (702) are positioned in the movable cavity, the first spring (702) is away from the limiting ring (701) to prop against the inner wall of the movable cavity, and the first spring (702) is in a compressed state; a movable groove (703) is arranged in the fixed sleeve (1) along the axial direction, and the movable groove (703) is communicated with the movable cavity; the limiting ring (701) is provided with a limiting block (704), and the limiting block (704) is connected in the movable groove (703) in a sliding way; the outer side of the fixed sleeve (1) is provided with a handle (705), a second spring (711) is arranged in the handle (705), and a movable block (707) is arranged on one side of the second spring (711) close to the fixed sleeve (1); A positioning block (706) is arranged on one side of the movable block (707) far away from the second spring (711), and the positioning block (706) extends into the movable groove (703); The sides of the positioning block (706) and the limiting block (704) which are close to each other are inclined surfaces, and the sides of the positioning block and the limiting block which are far away from each other are vertical surfaces and are parallel to each other; A guide groove (708) is arranged on the side surface of the movable block (707), and a guide block (710) is arranged on the inner side of the guide groove (708); The guide groove (708) and the guide block (710) are inclined surfaces at one side far away from the fixed sleeve (1) and are contacted with each other; a button (709) is arranged on one side of the guide block (710) far away from the movable block (707), and the button (709) extends to the outer side of the grip (705).
  7. 7. A retractable needle according to claim 3, wherein the positioning mechanism (6) is replaced by an electrically controlled drive mechanism for electrically driving the movable column (2) to slide and stop, comprising: An operation groove (633) is formed in the side face of the movable column (2) along the axial direction, a motor screw rod (635) is arranged in the length direction of the operation groove (633), and the motor screw rod (635) and the movable column (2) are relatively fixed; A penetrating motor (634) is arranged in the operation groove (633), and a motor screw rod (635) is of a screw rod structure of the penetrating motor (634); The penetrating motor (634) slides in the operation groove (633), The connecting block (631) is fixed on the side face of the penetrating motor (634), the fastening screw (632) is arranged on the side face of the fixing sleeve (1), and the connecting block (631) and the fixing sleeve (1) are fixed through the fastening screw (632).
  8. 8. The telescopic detection needle according to any one of claims 1-7, wherein the connecting seat (202) is separated from the movable column (2), one end of the movable column (2) close to the detection needle (4) is provided with a plurality of pressure sensors (204), and the detection end of each pressure sensor (204) is connected with the connecting seat (202); a plurality of connecting wires (205) are arranged between the connecting seat (202) and the movable column (2); the detection needle (4) is electrically connected with the external socket (5) through a connecting wire (205).
  9. 9. A method for using the telescopic detection needle according to any one of claims 1 to 8, comprising the following steps: S1, determining the length of the detection needle (4) required to extend according to the detection requirement, and determining the distance of the movable column (2) required to slide according to the length required to extend S2, aligning the opening of the protective sleeve (3) to a position to be detected; S3, the movable column (2) slides to push out the detection needle (4), and the detection needle (4) pierces into a detection position; s4, moving to the position, wherein the detection needle (4) is limited by the positioning mechanism (6) and does not continuously penetrate; s5, detecting is completed, the sliding movable column (2) withdraws the detecting needle (4), and detecting is completed.
  10. 10. The method of using a retractable needle as claimed in claim 9, wherein the pressure change data of the needle (4) is obtained experimentally in different conditions of penetration of the skin, and the control group includes different conditions of penetration during penetration 、 、 、 、 、 、 And ; In order to detect a smooth penetration of the needle (4) in the penetration direction, In order to detect that the penetration direction of the needle (4) is askew after penetration, the skew angle is 0-5 degrees, In order to detect that the penetration direction of the needle (4) is askew after penetration, the skew angle is 5-10 degrees, In order to detect that the penetration direction of the needle (4) is skewed after penetration, the skew angle is 10-20 degrees, In order to detect that the penetration direction of the needle (4) is askew after penetration, the skew angle is 20-30 degrees, In order to detect that the penetration direction of the needle (4) is askew after penetration, the skew angle is more than 30 degrees, In order to detect that the needle (4) is bent before piercing and cannot be pierced, Other penetration conditions; Based on the experimental data, an SVM classification model is established; the step S3 includes: S31, detecting pressure data in real time by a sensor positioned on the connecting seat (202) in the penetrating process; S32, importing pressure data into an SVM classification model, and judging penetration conditions; s33, stopping puncturing when the puncturing situation does not meet the design requirement; S34, the movable column (2) and the detection needle (4) retract; S35, judging the reason of penetration failure, and repeating S1, S2 and S3.

Description

Telescopic detection needle and use method thereof Technical Field The invention relates to the technical field of medical instruments, in particular to a telescopic detection needle and a use method thereof. Background The current is ion-conductive in the living body, and the ionic current is required to be converted into the electronic current or the electronic current is required to be converted into the ionic current at the interface between the electrode and the solution, so that the living body and the instrument system form a current loop. When the electrode is in contact with the human body, an electric potential is generated on the electrode, which essentially completes the conversion of ions in the human body into mobile electrons in the metal electrode up to the preamplifier. The medical electrode is mainly divided into a detection electrode and a stimulation electrode, and because the physical and chemical changes in the organism are that the positive and negative charges of each part in the organism are unevenly distributed, the electric potentials of different parts or inside and outside cells in the organism are unequal, and the electric potentials of the different parts are required to be guided to an electric potential measuring instrument by the electrodes for measuring the positions. The potential and the electrical frequency of different types of cells are different, particularly the difference between normal cells and cancerous cells is obvious, electrodes are adopted to detect diseased cells or tissues at the present stage, and the early disease discovery is combined with a big data intelligent analysis system, so that the method is more and more widely applied. In the fields of medical treatment and biological detection such as minimally invasive surgery and biological tissue sampling, the flexible detection needle has good flexibility, can adapt to complex tissue environments, reduces damage to tissues, and is widely applied. A flexible test needle as disclosed in patent application number 2023209460043, but in actual penetration operation, there are the following problems due to its flexible nature: Because the detection needle has flexibility, the penetration depth cannot be accurately controlled due to the influence of tissue resistance during penetration, and the condition that the tissue is damaged due to too deep penetration or an effective detection sample cannot be obtained due to too shallow penetration occurs; In the process of puncturing the flexible detection needle, the puncturing direction is easy to be inclined due to factors such as hand shake, uneven tissue resistance and the like, and deviates from a preset detection position, so that the accuracy of a detection result is influenced; The operator needs to expend a great deal of effort to control the state of penetration of the detection needle, and the skill requirement on the operator is high, and misoperation is easy to occur, so that the detection efficiency is low. In the prior art, aiming at the operation problem of a flexible detection needle, an effective auxiliary structure is lacking. The rigid sleeve is used as an auxiliary structure in part of the prior art, but the rigid sleeve cannot adapt to the bending characteristic of the flexible detection needle, so that the application range of the flexible detection needle is limited, and part of the auxiliary structure is complex in operation, requires an additional power device, has higher cost and is inconvenient to popularize and use in clinical scenes. Therefore, there is a need for a telescoping structure that can provide stable support and accurate positioning for a flexible test needle, solving the problem of inconvenient penetration operation of the existing flexible test needle. Disclosure of Invention The invention mainly aims to provide a telescopic detection needle and a use method thereof, which solve the problem of inconvenient penetration operation of the traditional flexible detection needle. In order to solve the technical problems, the invention adopts the following technical scheme: a telescopic detection needle comprises a fixed sleeve, wherein the fixed sleeve is connected with a movable column in a sliding manner along the axial direction; The side surface of the movable column is provided with a scale groove for observing the sliding distance of the movable column, so as to determine the extension length of the detection needle; The movable column is provided with a connecting seat at one end and a detection needle at the other end, and the external socket is electrically connected with the detection needle and is used for externally connecting a detection system matched with the detection needle; One side of fixed cover is close to the detection needle is equipped with the protective sheath, and one side that the protective sheath kept away from fixed cover is equipped with the opening, and the opening is used for the come in and go out