An intraoperative monitoring endotracheal intubation

Abstract

The present invention discloses an intraoperative monitoring tracheal intubation, comprising: an tracheal intubation body, a positioning balloon, and an intraoperative monitoring electrode sheet, wherein the electrode sheet is wound and wrapped on the tube wall of the tracheal intubation body and is located at the proximal end of the positioning balloon, the electrode sheet comprises a polymer substrate and a plurality of curved electrodes attached to the substrate, the electrode sheet is connected to the intubation body through the first and second connecting parts formed at the proximal and distal ends of the substrate, the substrate is hollowed out between the curved electrodes, so that the curved electrodes can move relative to the intubation body; the curved electrodes are three-dimensional curved structures, which form a wavy line shape on the section of the tube wall of the intubation body and the radial surface of the intubation body, thereby forming a convex portion protruding from the tube wall of the intubation body, and a non-conductive connection structure is provided between some adjacent curved electrodes. The tracheal intubation electrode sheet structure of the present invention increases the contact area between the electrode and the tissue, improves the flexibility of the electrode, and can prevent short circuits between the electrodes, and is not easy to scratch human tissue.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an intraoperative monitoring tracheal intubation. Background Art

[0002] Endotracheal intubation is a product used in surgeries to prevent and treat airway obstruction. It can keep the patient's airway open and obtain laryngeal nerve activity signals through electrodes. It is a commonly used tool for monitoring the patient's recurrent laryngeal nerve signals during surgery.

[0003] Currently, most electrodes at the front end of endotracheal tubes for intraoperative monitoring are steel wire electrodes, which have a small contact area with human tissue, unstable signal acquisition, and the steel wire is easy to slip, which will increase damage to human tissue.

[0004] The prior art CN212593396U discloses a tracheal cannula, whose contact electrode is a wavy curve electrode arranged around the tracheal cannula and located on a membrane layer. Compared with a steel wire electrode, the contact area between the electrode and human tissue is increased, so that the contact electrode can more effectively contact the human body and collect electromyographic signals.

[0005] However, the curved electrode in the above technical solution is attached to the tube as a whole, and the electrode has low flexibility. The laryngeal tissue requires the tracheal tube to have a certain degree of curvature and deformability. The above electrode cannot be bent and twisted to better adapt to the morphological changes of the laryngeal tissue. However, if the flexibility of the electrode is increased blindly, it is easy to cause a short circuit between the electrodes. At the same time, due to the lack of elasticity of the curved electrode surface, it cannot fit tightly to the laryngeal tissue and there is a risk of scratching the laryngeal tissue.

[0006] Therefore, a new endotracheal tube is urgently needed to solve the above problems. Summary of the invention

[0007] In order to solve the above technical problems and achieve the above objectives, the present invention adopts the following technical solutions:

[0008] The present invention provides an intraoperative monitoring endotracheal intubation, the endotracheal intubation comprising:

[0009] An endotracheal tube body, wherein a positioning balloon is provided at the distal end of the endotracheal tube body;

[0010] An intraoperative monitoring electrode sheet, the electrode sheet is wrapped around the tube wall of the endotracheal tube body and is located at the proximal end of the positioning balloon; the electrode sheet comprises a polymer substrate and a plurality of curved electrodes attached to the substrate;

[0011] The polymer substrate forms a first connection part and a second connection part at the proximal end and the distal end of the electrode sheet, respectively, and the electrode sheet is fixedly connected to the endotracheal tube body through the first connection part and the second connection part; the plurality of curved electrodes are located between the first connection part and the second connection part, the polymer substrate between adjacent curved electrodes is hollowed out, and the plurality of curved electrodes and the endotracheal tube body can move relatively;

[0012] The curved electrode is a three-dimensional structure, and a plurality of reference lines extending axially along the endotracheal tube body are formed between the first connection part and the second connection part, and the curved electrode is arranged along the reference lines; wherein, the projection shape of the curved electrode on the section of the outer surface of the endotracheal tube body is a first wave line that fluctuates up and down along the reference line, and the projection shape of the curved electrode on the radial surface of the endotracheal tube body is a second wave line, the trough of the second wave line is the intersection of the first wave line and the reference line, and the line connecting the troughs coincides with the reference line; other areas outside the trough area of ​​the second wave line constitute a convex portion protruding from the tube wall of the endotracheal tube body; the radial surface of the endotracheal tube body refers to the plane formed by the central axis of the endotracheal tube body and the reference line, which is perpendicular to the section of the outer surface of the endotracheal tube body.

[0013] At least some of the adjacent curved electrodes have a non-conductive connection structure, and the non-conductive connection structure is used to connect the protrusion of the curved electrode and the adjacent valley on the adjacent curved electrode.

[0014] The non-conductive connection structure is in a three-dimensional curve shape, and its projection on the tube wall of the endotracheal tube body and the projection on the radial surface of the endotracheal tube body are both in a curve shape.

[0015] Preferably, a row of the non-conductive connection structures is formed between every two adjacent curved electrodes, and adjacent rows of non-conductive connection structures are arranged in a continuous connection or staggered arrangement.

[0016] Preferably, the curved electrode comprises a plurality of groups of electrodes, and the non-conductive connection structure is provided between the positive and negative electrodes of at least one group of electrodes.

[0017] Furthermore, the non-conductive connection structure is formed by the substrate; and the protrusion is formed by integrally stamping the curved electrode and the substrate located at the bottom of the curved electrode.

[0018] Furthermore, the tracheal tube body is arc-shaped, the curved electrode close to the inner side of the arc of the tube body is the inner curved electrode, the curved electrode close to the outer side of the arc of the tube body is the outer curved electrode, and the amplitude of at least part of the first wave line of the inner curved electrode is smaller than the amplitude of the first wave line of the outer curved electrode.

[0019] Furthermore, the curved electrode includes a plurality of groups of electrodes, each group of electrodes includes a proximal region, a middle region and a distal region, wherein the spacing between the electrodes in the middle region is greater than the spacing between the electrodes in the proximal and / or distal regions.

[0020] Furthermore, the curved electrode includes two groups of electrodes, and the two groups of electrodes are distributed on the cannula body close to the inner arc side of the cannula, and the spacing between the two groups of electrodes on the inner arc side of the cannula is smaller than the spacing on the outer arc side.

[0021] Furthermore, the curved electrode is in an arched shape in a circumferential cross section at any point.

[0022] Furthermore, the surface of the curved electrode in contact with human tissue has convex points.

[0023] Furthermore, the first connecting portion and the second connecting portion are fixed to the tube wall of the endotracheal tube body by heat-melting the cuff.

[0024] Furthermore, it also includes a wire, which is electrically connected to the electrode sheet on the inner surface of the first connecting portion and is buried in the tube wall of the endotracheal tube body, and the wrapping material of the wire is Teflon.

[0025] The reference line is not a real line on the electrode sheet, but is only a reference line for the curved electrode arrangement.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) The substrate between adjacent curved electrodes on the electrode sheet of the present invention is hollowed out, so that the plurality of curved electrodes can move relative to the endotracheal tube body, increasing the flexibility of the curved electrodes, so that the curved electrodes can be bent and twisted to better adapt to the morphological changes of the laryngeal tissue. At the same time, the curved electrodes not only form a wavy line shape on the wall of the endotracheal tube body, but also form a wavy line on the radial surface of the endotracheal tube body, thereby forming a convex portion protruding from the wall of the endotracheal tube body. The above structure can achieve the following effects at the same time: ① It allows a longer curved electrode to be arranged in an electrode sheet of the same length, and the maximum deformability is greatly enhanced; at the same time, because the radial surface is also set to a wavy line shape, the amplitude of the curved electrode of the same length (the amplitude of the projection on the section of the outer surface of the endotracheal tube body) is smaller, which increases the spacing between the curved electrodes and avoids short circuits; ② By setting the outer surface section and the radial surface of the endotracheal tube body to a wavy line shape at the same time, the entire curved electrode maintains a certain shape stability, avoiding the electrode from deforming arbitrarily with the bending of the endotracheal tube body and causing short circuits; ③ The raised portion makes the electrode sheet have a certain thickness as a whole, thereby forming a more reliable contact with the laryngeal tissue and making the measurement more accurate; ④ This thickness can also change with the contact with the laryngeal tissue, and has good elasticity, thereby avoiding scratching the laryngeal tissue.

[0028] (2) A non-conductive connection structure is provided between some adjacent curved electrodes to connect the raised portion of the curved electrode and the adjacent trough on the adjacent curved electrode, thereby supporting and stretching the raised portion that is most susceptible to deformation, further avoiding the short circuit problem caused by excessive deformation of the adjacent curved electrodes due to increased flexibility. At the same time, the provision of such a non-conductive connection structure can make the overall outer surface of the electrode sheet form a mesh structure or a cage structure, further avoiding scratches on the throat tissue by the raised portion.

[0029] (3) The non-wire connection structure can be continuously connected or staggered between adjacent curved electrodes. It is directly formed by the substrate without the need for additional components / materials, which not only simplifies the manufacturing process but also forms structural integrity. The projections on the plane and in the direction perpendicular to the plane are both curved shapes. The three-dimensional curve design makes it more flexible and less likely to damage tissues.

[0030] (4) The amplitude of the wave lines of the curved electrodes and the spacing between adjacent curved electrodes are variable. The present invention increases the spacing between the curved electrodes in the same group and reduces the probability of short circuit between the curved electrodes in the same group by designing that the amplitude of at least part of the wave lines of the curved electrodes close to the inner side of the arc of the cannula body is smaller than the amplitude of the wave lines of the curved electrodes close to the outer side of the arc of the cannula body.

[0031] (5) In each group of curved electrodes, since the deformability of the middle region is greater than that of the proximal and distal ends, short circuits are more likely to occur between the electrodes in the middle region. Therefore, the spacing between the electrodes in the middle region is designed to be greater than the spacing between the electrodes in the proximal and / or distal regions, which also reduces the probability of short circuits between electrodes in the same group.

[0032] (6) The curved electrode is in an arched shape in the circumferential cross section at any point, so that the edge of the curved electrode forms a smooth structure, thereby preventing the edge of the electrode from scratching the tissue during the process of inserting the tube into the throat.

[0033] (7) The surface of the curved electrode in contact with human tissue has tiny bumps. This design increases the contact area between the electrode and the tissue, making the measurement more accurate. At the same time, after the electrode contacts the tissue, the bumps on the surface can be embedded in the tissue, further preventing the electrode from sliding between the electrode and the tissue, thereby avoiding the random twisting of the curved electrode and reducing the occurrence of short circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is an overall diagram of the endotracheal tube of the present invention.

[0036] Figure 2 The figure is a winding diagram of the electrode sheet on the endotracheal tube of the present invention.

[0037] Figure 3 This is a plane projection diagram of an electrode sheet disclosed in an embodiment of the present invention.

[0038] Figure 4 It is a schematic diagram of the connection between the curved electrode on the inner surface of the electrode sheet of the present invention and the wire.

[0039] Figure 5 This is a plane projection diagram of an electrode sheet disclosed in an embodiment of the present invention.

[0040] Figure 6 It is the projection of the curved electrode disclosed in the embodiment of the present invention on the tangent plane of the outer surface of the endotracheal tube body and the projection on the radial plane.

[0041] Figure 7 The present invention is a schematic diagram of an inter-electrode connection structure disclosed in an embodiment of the present invention.

[0042] Figure 8The present invention is a schematic diagram of an inter-electrode connection structure disclosed in an embodiment of the present invention.

[0043] Fig. 9 The present invention is a schematic diagram of an inter-electrode connection structure disclosed in an embodiment of the present invention.

[0044] Fig.10 This is a graph of electrode amplitude changes disclosed in an embodiment of the present invention.

[0045] Fig.11 This is an electrode spacing arrangement diagram disclosed in an embodiment of the present invention.

[0046] Figure numerals: 1 is the endotracheal tube body; 2 is the positioning balloon; 3 is the intraoperative monitoring electrode sheet; 4 is the polymer substrate; 5 is the curved electrode, 5.1 is the first electrode, 5.2 is the second electrode, 5.3 is the third electrode, 5.4 is the fourth electrode; 6.1 is the first connecting part, 6.2 is the second connecting part; 7 is the electrode connection point; 8 is the wire; 9 is the raised part; 10 is the connecting structure; 11 is the baseline; 12 is the first wave line; 13 is the second wave line; 14 is the trough; 15 is the peak. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0048] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0049] Example 1

[0050] like Figure 1-2 As shown, the present invention discloses an intraoperative monitoring endotracheal tube, which includes an endotracheal tube body 1, a positioning balloon 2, and an intraoperative monitoring electrode sheet 3; wherein the positioning balloon 2 is arranged at the distal end of the endotracheal tube body 1, and the electrode sheet 3 is wrapped around the tube wall of the endotracheal tube body 1 and is located at the proximal end of the positioning balloon 2.

[0051] See also Figure 3The electrode sheet 3 includes a polymer substrate 4 and four curved electrodes 5 attached to the substrate 4. The substrate 4 between the four curved electrodes 5 is hollowed out. The substrate 4 forms a first connecting portion 6.1 and a second connecting portion 6.2 at the proximal end and the distal end of the electrode sheet 3 respectively. The four curved electrodes 5 are located between the first connecting portion 6.1 and the second connecting portion 6.2. The polymer substrate 4 between adjacent curved electrodes 5 is hollowed out.

[0052] The four curved electrodes 5 include one set of electrodes at the top and one set at the bottom. In other embodiments, the number of curved electrodes can be selected to be six, eight, etc. The electrode sheet 3 is formed by first tightly connecting the metal electrode material and the polymer substrate 4 together, then using photolithography technology to form a plurality of curved photoresist structures on the polymer substrate 4, and then removing the metal material portion not protected by the photoresist by chemical or electrochemical etching methods, thereby forming a plurality of curved electrodes 5, and performing gold plating on the formed plurality of curved electrodes 5. Preferably, the material of the substrate 4 is polyimide.

[0053] The electrode sheet 3 is integrally wound and fixed on the endotracheal tube body 1 by means of a first connection portion 6.1 and a second connection portion 6.2 through a cuff heat shrink wrap. Figure 4 A plurality of wire connection points 7 are arranged on the inner side of the second connection portion 6.2 near one end of the tube body 1, and a plurality of wires 8 are connected to a plurality of curved electrodes 5 through the connection points 7 on the inner surface of the electrode sheet 3 and gathered together and buried together in the tube wall of the endotracheal tube body 1. Preferably, the wire 8 is wrapped with Teflon, and the number of the wires 8 corresponds to the number of the plurality of curved electrodes 5.

[0054] It is understandable that after adopting the above solution, the curved electrode 5 of the present invention can move relative to the endotracheal tube body 1, which significantly increases the flexibility of the curved electrode 5, allowing the curved electrode 5 to bend and twist to better adapt to the morphological changes of the laryngeal tissue.

[0055] Further, see Figure 5-6 The present invention designs the curved electrode 5 as a three-dimensional curved structure, and forms a plurality of reference lines 11 extending along the axis 1 of the endotracheal tube body between the first connection part 6.1 and the second connection part 6.2 (the reference lines are not real lines on the electrode sheet, but only reference lines for the arrangement of the curved electrodes), and arranges the four curved electrodes 5 along the reference lines 11 respectively. Figure 6It can be seen that the projection shape of the curved electrode 5 on the tangent plane of the outer surface of the endotracheal tube body 1 is a first wavy line 12 that fluctuates up and down along the reference line 11. Further, the projection shape of the curved electrode 5 on the radial plane of the endotracheal tube body 1 is set to be a second wavy line 13. The trough 14 of the second wavy line 13 is the intersection of the first wavy line 12 and the reference line 11, and the connecting line of the trough 14 coincides with the reference line 11; other areas outside the trough area of ​​the second wavy line 13 constitute a protrusion 9 protruding from the wall of the endotracheal tube body; the radial plane of the endotracheal tube body 1 refers to the plane formed by the central axis of the endotracheal tube body 1 and the reference line, which is perpendicular to the tangent plane of the outer surface of the endotracheal tube body 1.

[0056] After adopting the above scheme, the curved electrode 5 of the present invention not only forms a wavy line shape on the tube wall of the endotracheal tube body 1, but also forms a wavy line shape on the radial surface of the endotracheal tube body 1. Compared with the straight electrode in the electrode sheet of the prior art, such a structure allows a longer curved electrode to be arranged in the electrode sheet of the same length, greatly enhancing the deformability of the electrode; at the same time, because the radial surface is also set to a wavy line shape, the amplitude of the curved electrode of the same length (the amplitude of the projection on the section of the outer surface of the endotracheal tube body) is smaller, the spacing between the curved electrodes is increased, and the occurrence of short circuit is avoided; further, the design of the three-dimensional structure enables the entire curved electrode to maintain a certain shape stability, avoiding the curved electrode from deforming arbitrarily with the bending of the endotracheal tube body and causing short circuit; in addition, the protrusion makes the electrode sheet have a certain thickness as a whole, so as to form a more reliable contact with the laryngeal tissue and make the measurement more accurate. This thickness can also change with the contact with the laryngeal tissue and has good elasticity, thereby avoiding scratching the laryngeal tissue.

[0057] However, as the degree of freedom between a plurality of adjacent curved electrodes 5 is large, there may be a risk of contact short circuit.

[0058] To avoid the risk of contact shorting, see Figure 5 A non-conductive connection structure 10 is provided between at least some adjacent curved electrodes 5. The non-conductive connection structure 10 is used to connect the protrusions (i.e., other areas outside the trough area) of the curved electrode 5 with the adjacent troughs on the adjacent curved electrode, thereby supporting and stretching the protrusions that are most likely to deform, further avoiding the short circuit problem caused by excessive deformation of the adjacent curved electrodes 5 due to increased flexibility. At the same time, the provision of such a non-conductive connection structure 10 can make the overall outer surface of the electrode sheet 3 form a mesh structure or a cage structure, further avoiding the protrusions from scratching the throat tissue.

[0059] Preferably, the non-conductive connecting structure 10 is a non-conductive connecting wire with certain flexibility and rigidity.

[0060] Preferably, the non-conductive connection structure 10 can be set as a three-dimensional structure, and its projection on the plane and in the direction perpendicular to the plane are both curved shapes. The three-dimensional curve design makes it more flexible and less likely to damage tissues.

[0061] Preferably, the non-conductive connection structure 10 is directly formed by the substrate 4 without adding additional components / materials, that is, when the substrate 4 is hollowed out, a hollowed-out area is selected so that the remaining material forms the non-conductive connection structure 10; in order to adjust the flexibility of the non-conductive connection structure 10, the non-conductive connection structure 10 may have a hollowed-out structure.

[0062] Preferably, the protrusion 9 is formed by integrally stamping the curved electrode 5 and the substrate 4 located at the bottom of the curved electrode 5. The protrusion 9 is prepared by using a stamping tool to stamp the curved electrode 5 and the bottom of its substrate 4, so that a protrusion is formed at the crest and / or trough of the curved electrode 5, and the height of the protrusion is 0.5-1 mm. It can be understood that the protrusion 9 and the curved electrode 5 together form a three-dimensional curved electrode structure, which can prevent short circuits between electrodes while further reducing the risk of scratching the laryngeal tissue by the electrode surface.

[0063] There are many ways to connect the non-conductive connection structure 10 between adjacent curved electrodes.

[0064] See also Figure 7 The curved electrode includes four electrodes, wherein a row of non-conductive connection structures 10 is formed between every two adjacent curved electrodes, and three rows of non-conductive connection structures 10 are formed between the first electrode 5.1 and the second electrode 5.2, the second electrode 5.2 and the third electrode 5.3, and the third electrode 5.3 and the fourth electrode 5.4. Adjacent rows of non-conductive connection structures 10 are continuously connected. It can be understood that the non-conductive connection line 10 forms a continuous three-dimensional curve between the four curved electrodes.

[0065] Example 2

[0066] The difference between Example 2 and Example 1 is that: Figure 8 The adjacent rows of non-conductive connecting structures 10 are not continuously connected but staggered. It can be understood that the non-conductive connecting line 10 is not a continuous three-dimensional curve between the four curved electrodes.

[0067] Example 3

[0068] The difference between Example 3 and Example 1 is that: Fig. 9Non-conductive connecting wires 10 are only arranged between the first electrode 5.1 and the second electrode 5.2, which are more susceptible to short circuit, and between the third electrode 5.3 and the fourth electrode 5.4, but not between the second electrode 5.2 and the third electrode 5.3.

[0069] Example 4

[0070] The difference between the fourth embodiment and the first embodiment is that the amplitude of the wave lines of the second electrode 5.2 and the third electrode 5.3 is different from the amplitude of the wave lines of the first electrode 5.1 and the fourth electrode 5.4.

[0071] See also Fig.10 The curved electrodes include a first group of electrodes (5.1, 5.2) and a second group of electrodes (5.3, 5.4). The endotracheal tube body 1 is arc-shaped, the curved electrodes (5.2, 5.3) close to the inner side of the arc of the tube body 1 are inner curved electrodes, and the curved electrodes (5.1, 5.4) close to the outer side of the arc of the tube body 1 are outer curved electrodes. The amplitude of at least part of the wave lines of the inner curved electrodes (5.2, 5.3) is set to be smaller than the amplitude of the wave lines of the outer curved electrodes (5.1, 5.4). As the amplitude of the wave lines of the inner curved electrodes (5.2, 5.3) decreases, the spacing between the same group of curved electrodes (5.1 and 5.2, 5.3 and 5.4) increases, reducing the probability of short circuit between the same group of electrodes; at the same time, the amplitude of the inner curved electrodes (5.2, 5.3) decreases, and the contact between the first group of electrodes (5.1 and 5.2) and the second group of electrodes (5.3 and 5.4) is also reduced.

[0072] Example 5

[0073] The difference between Example 5 and Example 1 is that: in each group of electrodes, the spacing between the electrodes in the middle area is greater than the spacing between the electrodes in the proximal and / or distal areas.

[0074] See also Fig.11 The curved electrodes include a first group of electrodes (5.1, 5.2) and a second group of electrodes (5.3, 5.4). In the first group of electrodes (5.1 and 5.2), the spacing between the first electrode 5.1 and the second electrode 5.2 near the proximal and / or distal regions is smaller, the spacing between the first electrode 5.1 and the second electrode 5.2 near the middle region is larger, and the second group of electrodes (5.3 and 5.4) are arranged at the same spacing. Since the deformability of the electrodes in the middle region is greater than that of the electrodes in the proximal / distal regions, short circuits are more likely to occur between the electrodes in the middle region. Therefore, the spacing between the electrodes in the middle region is designed to be greater than the spacing between the electrodes in the proximal and / or distal regions, which also reduces the probability of short circuits between the electrodes in the same group.

[0075] Example 6

[0076] The difference between Example 6 and Example 1 is that, in order to make the electrodes fit the vocal cord muscles better, the first group of electrodes (5.1 and 5.2) and the second group of electrodes (5.3 and 5.4) are distributed on the cannula body 1 close to the inner arc side of the cannula, that is, the spacing between the two groups of electrodes on the inner arc side of the cannula is smaller than the spacing on the outer arc side.

[0077] Example 7

[0078] The difference between Example 7 and Example 1 is that the curved electrode 5 itself is a non-planar structure, and the curved electrode is arched in shape on the circumferential cross-section at any point, so that the edge of the curved electrode is smoother, and the risk of scratching the tissue by the edge of the electrode is reduced during the process of inserting the tube into the throat.

[0079] Example 8

[0080] The difference between Example 8 and Example 1 is that the surface of the curved electrode 5 in contact with human tissue has tiny convex points, which increases the contact area between the electrode and the tissue. When the electrode contacts the tissue, the convex points on the surface can be embedded in the tissue, further preventing the electrode from sliding between the electrode and the tissue, thereby avoiding the random twisting of the curved electrode and reducing the occurrence of short circuits. During surgery, the doctor can slightly twist the tracheal tube back and forth to make the curved electrode form a good contact with the laryngeal tissue and avoid short circuits between the curved electrodes.

[0081] The preferred embodiments of the present application are described in detail above, but the present application is not limited thereto. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, including combining various technical features in any other suitable manner, and these simple modifications and combinations should also be regarded as the contents disclosed in the present application and belong to the protection scope of the present application.

Claims

1. A device for monitoring endotracheal intubation during surgery, comprising: An endotracheal tube body, wherein a positioning balloon is provided at the distal end of the endotracheal tube body; An intraoperative monitoring electrode sheet, the electrode sheet is wrapped around the tube wall of the endotracheal tube body and is located at the proximal end of the positioning balloon; the electrode sheet comprises a polymer substrate and a plurality of curved electrodes attached to the substrate; Features: The polymer substrate forms a first connection part and a second connection part at the proximal end and the distal end of the electrode sheet, respectively, and the electrode sheet is fixedly connected to the endotracheal tube body through the first connection part and the second connection part; the plurality of curved electrodes are located between the first connection part and the second connection part, the polymer substrate between adjacent curved electrodes is hollowed out, and the plurality of curved electrodes and the endotracheal tube body can move relatively; The curved electrode is a three-dimensional structure, and a plurality of reference lines extending along the axial direction of the endotracheal tube body are formed between the first connection part and the second connection part, and the curved electrode is arranged along the reference lines; wherein, the projection shape of the curved electrode on the section of the outer surface of the endotracheal tube body is a first wave line that fluctuates up and down along the reference line, and the projection shape of the curved electrode on the radial surface of the endotracheal tube body is a second wave line, the trough of the second wave line is the intersection of the first wave line and the reference line, and the line connecting the troughs coincides with the reference line; other areas outside the trough area of ​​the second wave line constitute a convex portion protruding from the tube wall of the endotracheal tube body; the radial surface of the endotracheal tube body refers to the plane formed by the central axis of the endotracheal tube body and the reference line, which is perpendicular to the section of the outer surface of the endotracheal tube body; At least some of the adjacent curved electrodes have a non-conductive connection structure, and the non-conductive connection structure is used to connect the protrusion of the curved electrode and the adjacent valley on the adjacent curved electrode.

2. The intraoperative monitoring endotracheal intubation system according to claim 1, characterized in that: The non-conductive connection structure is in a three-dimensional curve shape, and its projection on the tube wall of the endotracheal tube body and the projection on the radial surface of the endotracheal tube body are both in a curve shape.

3. The intraoperative monitoring endotracheal intubation system according to claim 1 or 2, characterized in that: A row of the non-conductive connection structures is formed between every two adjacent curved electrodes, and adjacent rows of non-conductive connection structures are arranged in a continuous connection or staggered arrangement.

4. The intraoperative monitoring endotracheal intubation system according to claim 1 or 2, characterized in that: The curved electrode comprises a plurality of groups of electrodes, and the non-conductive connection structure is arranged between the positive and negative electrodes of at least one group of electrodes.

5. The intraoperative monitoring endotracheal intubation system according to claim 1 or 2, characterized in that: The non-conductive connection structure is formed by the substrate; the protrusion is formed by integrally punching the curved electrode and the substrate located at the bottom of the curved electrode.

6. The intraoperative monitoring endotracheal intubation according to any one of claims 1-2, characterized in that: The endotracheal tube body is arc-shaped, the curved electrode close to the inner side of the arc of the tube body is the inner curved electrode, and the curved electrode close to the outer side of the arc of the tube body is the outer curved electrode. The amplitude of at least part of the first wave line of the inner curved electrode is smaller than the amplitude of the first wave line of the outer curved electrode.

7. The intraoperative monitoring endotracheal intubation according to any one of claims 1 to 2, characterized in that: The curved electrode comprises a plurality of groups of electrodes, each group of electrodes comprises a proximal region, a middle region and a distal region, wherein the spacing between the electrodes in the middle region is greater than the spacing between the electrodes in the proximal and / or distal regions.

8. The intraoperative monitoring endotracheal intubation according to any one of claims 1-2, characterized in that: The curved electrode comprises two groups of electrodes, and the two groups of electrodes are both distributed on the cannula body close to the inner arc side of the cannula, and the spacing between the two groups of electrodes on the inner arc side of the cannula is smaller than the spacing on the outer arc side.

9. The intraoperative monitoring endotracheal intubation according to any one of claims 1-2, characterized in that: The curved electrode is in an arched shape in any circumferential cross section.

10. The intraoperative monitoring endotracheal intubation according to any one of claims 1-2, characterized in that: The surface of the curved electrode in contact with human tissue has convex points.

11. The intraoperative monitoring endotracheal intubation according to any one of claims 1 to 2, characterized in that: The first connecting portion and the second connecting portion are fixed to the tube wall of the endotracheal tube body by heat-melting the cuff.

12. The intraoperative monitoring endotracheal intubation according to any one of claims 1-2, characterized in that: It also includes a wire, which is electrically connected to the electrode sheet on the inner surface of the first connecting portion and is embedded in the tube wall of the endotracheal tube body. The wrapping material of the wire is Teflon.

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