CN-117653802-B - Neurosurgery suction tube with sensing function

CN117653802BCN 117653802 BCN117653802 BCN 117653802BCN-117653802-B

Abstract

The application provides a neurosurgery suction tube with a sensing function, and belongs to the technical field of medical appliances. The multi-sensor fusion sensing device comprises 4 groups of signal acquisition circuits which are arranged at intervals along the periphery Xiang Junyun on the neurosurgery suction tube body, wherein each group of signal acquisition circuits comprises an end electrode, two groups of Bragg grating nodes, optical path conducting optical fibers and electric conducting copper wires, the positions of the first group of Bragg grating nodes correspond to the positions of the flexible structures, and electric signals and optical signals are mutually independent in information acquisition and conduction and do not influence each other. By adopting the technical scheme of the application, the force in the operation process can be perceived, and the distribution of the reaction force on the surface of the tissue hard inclusion in the operation and the positioning depth information can be reconstructed through force touch, so that the high-efficiency electrode impedance spectrum detection and imaging are guided.

Inventors

YE KE
WU HAOQING
CHEN BAI
GUO HAO
JU FENG
YAO JIAFENG
DING LIPING
JIANG SURONG
WANG LINGYU
CAO JIAKAI

Assignees

南京航空航天大学

Dates

Publication Date: 20260508
Application Date: 20231227

Claims (5)

1. The neurosurgery suction tube with the sensing function is characterized by comprising a neurosurgery suction tube body (1) and a multi-sensor fusion sensing device (2); wherein, the neurosurgery suction tube body (1) is a hollow tube with a flexible flexing structure (1-1); the multi-sensor fusion sensing device (2) comprises 4 groups of signal acquisition lines, wherein the 4 groups of signal acquisition lines have the same structure, the 4 groups of signal acquisition lines are arranged at intervals along the periphery Xiang Junyun of the neurosurgery suction tube body (1), and the phase angle difference value of the adjacent signal acquisition lines is 90 degrees; Each group of signal acquisition lines comprises a first group of Bragg grating nodes (2-2), a second group of Bragg grating nodes (2-3) and optical fibers (2-4), wherein the first group of Bragg grating nodes (2-2) and the second group of Bragg grating nodes (2-3) are arranged on the optical fibers (2-4); The first group of Bragg grating nodes (2-2) corresponds to the flexure structure (1-1); The distance from the second group of Bragg grating nodes (2-3) to the end part of the optical fiber is larger than the distance from the first group of Bragg grating nodes (2-2) to the end part of the optical fiber; The first Bragg grating node (2-2) and the second Bragg grating node (2-3) are commonly used for decoupling the sensing axial force; the manner in which the transverse force F x 、F y is obtained is: S100, obtaining 、、、 Wherein, the method comprises the steps of, Representing the center wavelength shift corresponding to the ith Bragg grating node of the jth group; i= 2;j =1, 2,3,4; S200, solving F x 、F y : , Wherein, the The parameter is obtained through calibration experiments and is a known quantity; the longitudinal force F z is obtained in the following manner: S100, obtaining 、、、、、、、 ; I=1, 2, j=1, 2,3,4; S200, solving F z : , Wherein, the , Respectively represent the mapping coefficient constants related to the temperature variation amounts, Representing the thermal expansion coefficient of the Bragg grating node; Representing the thermo-optic coefficient of the bragg grating node, Representing an initial wavelength; Wherein, the ; Representing the distance from the left end of the neurosurgical suction tube body to the holding force point; 、 respectively representing the distances from the first Bragg grating node and the second Bragg grating node to the holding force point; Wherein, the Is a constant coefficient matrix and is obtained through a calibration test.
2. Neurosurgical suction tube with sensing function according to claim 1, characterized in that the flexing structure (1-1) is formed by cutting the tube body of the neurosurgical suction tube body (1).
3. The neurosurgical suction tube with a sensing function according to claim 1, wherein the 4 groups of signal acquisition lines are called a 1 st group of signal acquisition line, a2 nd group of signal acquisition line, a3 rd group of signal acquisition line, and a4 th group of signal acquisition line in the circumferential order on the neurosurgical suction tube body (1); the mode of knowing the temperature change through the 4 groups of signal acquisition lines is as follows: S100, obtaining 、、、、、、、 ; Wherein, the Representing the node center wavelength corresponding to the ith Bragg grating node of the jth group; representing the center wavelength shift corresponding to the ith Bragg grating node of the jth group, i=1, 2, j=1, 3; s200, calculating the temperature variation of the position at the sensing area of the first Bragg grating node Temperature variation of the position at the sensing region of the second Bragg grating node ; ; ; Wherein, the Representing the thermal expansion coefficient of the Bragg grating node; representing the thermo-optic coefficient of the bragg grating node.
4. Neurosurgery suction tube with sensing function according to claim 1, characterized in that each group of the signal acquisition lines further comprises a metal electrode (2-1), the metal electrode (2-1) is arranged at one end of the optical fiber (2-4), and the other end of the optical fiber is used as an incident light inlet.
5. Neurosurgical suction tube with sensing function according to claim 4, characterized in that the metal electrode (2-1) is used for excitation and signal acquisition.

Description

Neurosurgery suction tube with sensing function Technical Field The invention belongs to the technical field of medical instruments, and particularly relates to a neurosurgery suction tube with a sensing function. Background Neurosurgery often uses aspiration tubing to help remove unwanted internal tissue and fluid products such as tissue debris, blood, brain tumors, etc. and sometimes a physician uses aspiration tubing to manipulate tissue to assist in the dissection of brain tumors. The existing suction tube (such as CN101829389A, CN103977497A, CN201775856U, CN 201775856U) can adjust the suction force by changing the finger pressure at the hand-held end port, but does not have accurate perception of the force when the tail end of the suction tube is contacted, especially the medical damage to healthy brain tissue needs to be reduced as much as possible in neurosurgery, and the tumor excision operation often needs to avoid enlarging excision as much as possible under the condition of ensuring the cleanness of tumor excision, while the identification of tumor tissue and healthy tissue in neurosurgery is strongly dependent on the clinical experience of operators due to the specificity of the neurosurgery, although the excision effect can be evaluated by imaging analysis after the operation, the situation of secondary operation is very easy to occur. In this way, the safety operation and the identification of the incisional edges of malignant tissues are ensured by carrying out bioelectrical impedance spectrum rapid detection and imaging under the guidance of force sensing and force sensing palpation of fine operation in operation, and the method becomes a technical route which is worthy of research. Therefore, developing a neurosurgical suction tube with a sensing function (force sensing) is a technical problem to be solved. Disclosure of Invention The invention aims to solve the problems in the prior art and provides a neurosurgery suction tube with a sensing function. The technical scheme of the application is as follows: A neurosurgery suction tube with a sensing function comprises a neurosurgery suction tube body (1) and a multi-sensor fusion sensing device (2); wherein, the neurosurgery suction tube body (1) is a hollow tube with a flexible flexing structure (1-1); the multi-sensor fusion sensing device (2) comprises 4 groups of signal acquisition lines, wherein the 4 groups of signal acquisition lines have the same structure, the 4 groups of signal acquisition lines are arranged at intervals along the periphery Xiang Junyun of the neurosurgery suction tube body (1), and the phase angle difference value of the adjacent signal acquisition lines is 90 degrees; each group of signal acquisition lines comprises a first Bragg grating node (2-2), a second Bragg grating node (2-3) and an optical fiber (2-4), wherein the first Bragg grating node (2-2) and the second Bragg grating node (2-3) are arranged on the optical fiber (2-4); the first Bragg grating node (2-2) corresponds to the flexure structure (1-1); the second Bragg grating node (2-3) is at a greater distance from the end of the optical fiber than the first Bragg grating node (2-2). Further, each group of signal acquisition lines further comprises a metal electrode (2-1), and the metal electrode (2-1) is arranged at the end part of the optical fiber (2-4). Further, the distance between the second Bragg grating node (2-3) and the metal electrode (2-1) is larger than the distance between the first Bragg grating node (2-2) and the metal electrode (2-1). Further, the second Bragg grating node (2-3) is used for sensing transverse force, and the first Bragg grating node (2-2) and the second Bragg grating node (2-3) are used for decoupling sensing axial force. Further, the metal electrode (2-1) is used for exciting and collecting signals. Further, the flexible structure (1-1) is formed by cutting a tube body of the suction tube body (1) for neurosurgery. Further, the cutting groove is provided with a diamond-shaped cutting groove opening. Further, the 4 groups of signal acquisition lines are called as a1 st group of signal acquisition line, a2 nd group of signal acquisition line, a3 rd group of signal acquisition line and a 4 th group of signal acquisition line according to the peripheral sequence on the neurosurgery suction tube body (1); the mode of knowing the temperature change through the 4 groups of signal acquisition lines is as follows: s100, obtaining lambda 2-1、λ2-3、Δλ2-1、Δλ2-3、λ1-1、λ1-3、Δλ1-1、Δλ1-3; Wherein lambda i-j represents the node center wavelength corresponding to the j-th group of the i-th Bragg grating nodes, delta lambda i-j represents the center wavelength shift corresponding to the j-th group of the i-th Bragg grating nodes, i=1, 2, j=1, 3; S200, calculating a temperature change quantity delta T 1 of the position at the first Bragg grating node sensing area and a temperature change quantity delta T 2 of the position at the second Bragg