WO2024093804A1 - Structure de chauffage et dispositif de chauffage - Google Patents

Structure de chauffage et dispositif de chauffage Download PDF

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Publication number
WO2024093804A1
WO2024093804A1 PCT/CN2023/126910 CN2023126910W WO2024093804A1 WO 2024093804 A1 WO2024093804 A1 WO 2024093804A1 CN 2023126910 W CN2023126910 W CN 2023126910W WO 2024093804 A1 WO2024093804 A1 WO 2024093804A1
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WO
WIPO (PCT)
Prior art keywords
heating
tubular member
heating core
core
insulating
Prior art date
Application number
PCT/CN2023/126910
Other languages
English (en)
Chinese (zh)
Inventor
衷兴华
Original Assignee
杭州超博医疗科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 杭州超博医疗科技有限公司 filed Critical 杭州超博医疗科技有限公司
Publication of WO2024093804A1 publication Critical patent/WO2024093804A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/03—Electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/04—Waterproof or air-tight seals for heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes

Definitions

  • the present application relates to the technical field of medical equipment, and in particular, to a heating structure and a heating device.
  • medical devices are increasingly used in some medical scenarios, such as laparoscopic minimally invasive surgery.
  • medical devices are needed to ablate, cut or electrocoagulate the target tissue.
  • surgical forceps are used to clamp the target tissue, a blade is used to cut the target tissue, and then an electrocoagulation device is used to electrocoagulate the cut target tissue to stop bleeding, which is relatively cumbersome to implement.
  • a heating device with a heating structure is used to thermally separate the target tissue, and the target tissue can be closed or coagulated after cutting while the cutting is separated.
  • the heating structure is large, which makes the heating device larger, making it difficult to perform precise operations in a relatively narrow space, resulting in very limited application scenarios.
  • the present application proposes a heating structure and a heating device to solve the technical problem of the large size of the heating structure in the prior art.
  • an embodiment of the present application provides a heating structure for separating a target tissue, the heating structure comprising: a tubular member, at least one heating core, and an insulating component;
  • the insulating component is arranged inside the tubular member
  • At least one heating core is arranged inside the insulating component.
  • the heating structure further comprises: setting A filling structure at the inner wall of the second end of the tubular member;
  • the heating core has at least one bent portion and at least two straight portions spaced apart from each other connected by the bent portion;
  • the filling structure is filled between the inner wall and the bending portion.
  • the insulating assembly includes: an insulating heat-conducting layer attached to the inner circumferential wall of the tubular member, and an insulating structure disposed in the insulating heat-conducting layer;
  • a portion of the outer circumference of the heating core is in contact with the insulating heat-conducting layer, and another portion of the outer circumference is in contact with the insulating structure.
  • the heating structure further comprises: a first conductive wire; at least two heating cores comprising: a first heating core and a second heating core arranged in parallel and at intervals;
  • the first heating core, the insulating structure and the second heating core are arranged in sequence along a direction perpendicular to the axial direction of the tubular member;
  • the first end of the first wire is used to be electrically connected to the power supply of the heating device, the second end of the first wire extends into the tubular member and is electrically connected to the first end of the first heating core, and the second end of the first heating core is electrically connected to the second end of the second heating core.
  • the first end of the tubular member is open and the second end of the tubular member is closed;
  • a conductor structure is arranged at the inner wall of the second end of the closed tubular member, and the second end of the first heating core and the second end of the second heating core are both in contact with or connected to the conductor structure.
  • the first end of the first wire is used to be electrically connected to the first electrode of the power supply, and the second end of the first wire is electrically connected to the first end of the first heating core;
  • the first end of the second heating core is electrically connected to the tubular member, and the tubular member is electrically connected to the second electrode of the power supply.
  • the heating structure further comprises: a fixing portion located inside the tubular member;
  • the fixing portion is located at one end of the first heating core and the second heating core away from the inner wall and is fixedly connected to the inner peripheral wall of the tubular member;
  • the first wire is passed through the fixing portion.
  • the heating structure further comprises: a sealant located within the first end of the tubular member;
  • the sealant is located at one end of the fixing part away from the first heating core and is fixedly connected to the fixing part, sealing The circumferential surface of the rubber is sealedly connected to the inner circumferential wall of the tubular member to seal the opening;
  • the first wire is passed through the sealant.
  • an embodiment of the present application provides a heating device, comprising: any heating structure provided in the first aspect above.
  • the heating device further comprises: a first clamping member and a second clamping member, for clamping the target tissue in a closed state;
  • the heating structure is arranged on the clamping surface of the first clamping member and is electrically connected to the second electrode of the power source through the first clamping member.
  • the heating device further comprises: a rod portion
  • the first clamping member and the second clamping member are both connected to one end of the rod;
  • the first end of the tubular member of the heating structure is close to the rod portion, and the first wire of the heating structure extends into the inner cavity of the rod portion.
  • the clamping surface of the first clamping member of the heating device has a groove
  • the clamping surface of the second clamping member has a clamping pad corresponding to the groove
  • the tubular component of the heating structure is embedded in the groove, and the radial dimension of the tubular component is greater than the depth of the groove.
  • the heating core and the insulating component are both arranged in the inner space of the tubular member, and the insulating component can wrap around the circumference of the heating core, isolating the heating core from the tubular member, so that the heating core and the inner circumferential wall of the tubular member are insulated from each other.
  • the heating structure can generate heat, and perform operations such as cutting, separating, and then closing the target tissue.
  • the heating structure is composed of the heating core, the insulating component, and the inner circumferential wall of the tubular member in the radial direction of the tubular member, so that the radial dimension of the heating structure is relatively compact and the overall volume is relatively small, which is conducive to the miniaturized design of the heating device and can be applied to a narrower working space, thereby enriching the application scenarios of the heating device.
  • FIG1 is a schematic structural diagram of a heating structure provided in an embodiment of the present application.
  • FIG2 is a cross-sectional schematic diagram of a heating structure provided in an embodiment of the present application.
  • FIG3 is a cross-sectional schematic diagram of another heating structure provided in an embodiment of the present application.
  • FIG4 is a schematic cross-sectional view of the line AA in FIG3 ;
  • FIG5 is a schematic diagram of the structure of a heating device provided in an embodiment of the present application.
  • FIG. 6 is a partial enlarged view of point B in FIG. 5 .
  • the heat generated by the heating structure is required to be relatively high, and a larger area or longer heating core is required to fill the entire tubular member.
  • a heating core bypasses the inner space of the tubular member, increasing the path of the heating core, resulting in a larger volume of the heating core after bypassing, and the corresponding tubular member volume is also larger, resulting in a larger volume of the entire heating structure.
  • the heating structure and heating device provided in this application are intended to solve the above technical problems in the prior art.
  • the embodiment of the present application provides a heating structure 10 for separating target tissue. Please refer to Figures 1 to 3.
  • the heating structure 10 includes: a tubular member 11, at least one heating core and an insulating component.
  • the insulating component is disposed inside the tubular member 11 .
  • At least one heating core is disposed inside the tubular member 11 .
  • the heating core and the insulating component in the heating structure 10 are both arranged in the tubular member 11.
  • the insulating component can be wrapped around the circumference of the heating core, isolating the heating core from the tubular member 11, so that the heating core and the inner circumferential wall of the tubular member 11 are insulated from each other.
  • the heating structure 10 can generate heat, cut and separate the target tissue, and then close the end.
  • the heating structure 10 is composed of the heating core, the insulating component and the inner circumferential wall of the tubular member 11 along the radial direction D of the tubular member 11, so that the size of the heating structure 10 along the radial direction D is relatively compact and the overall volume is small, which is conducive to the miniaturized design of the heating device 100 and can be applied to a smaller working space, thereby enriching the application scenarios of the heating device 100.
  • the radial direction here actually refers to the radial direction in which the heating core exists.
  • the insulating component can be manufactured in one piece, or can be manufactured separately as the insulating thermal conductive layer 12 and the insulating structure 15 .
  • the heating structure 10 further includes: a filling structure 19 disposed at the inner wall 113 of the second end 112 of the tubular member 11 .
  • the heating core has at least one bent portion 101 and at least two straight portions 102 spaced apart from each other connected to the bent portion 101 .
  • the filling structure 19 is filled between the inner wall 113 and the bending portion 101 .
  • a heating core is folded in half near the inner wall 113 to obtain two parallel straight portions 102, one end of one of the straight portions 102 is connected to the first wire 16, and the other end of the straight portion 102 away from the bent portion 101 is electrically connected to the power supply.
  • a heating core can be used to fold in a serpentine shape in an insulating component to increase the heating area.
  • the tubular member 11 may be a conductor, a filling structure 19 is used at the bent portion 101 to isolate the bent portion from the inner wall 113, thereby avoiding the problem of increased process costs caused by insulation treatment at the inner wall 113.
  • the filling structure 19 is wrapped outside the bending portion 101 .
  • the material of the filling structure 19 is magnesium oxide, which has the characteristics of insulation and high temperature resistance.
  • the two straight portions 102 can be similar to the first heating core 13 and the second heating core 14 arranged in parallel and at intervals, and their ends can also be fixed and sealed by the fixing portion and the sealant. The difference is that the two straight portions 102 are electrically connected through the bending portion 101, and the first heating core 13 and the second heating core 14 are electrically connected through the inner wall 113.
  • the specific structure can be seen in detail below. describe.
  • the insulation assembly includes: an insulation heat-conducting layer 12 attached to the inner circumferential wall of the tubular member 11 , and an insulation structure 15 disposed in the insulation heat-conducting layer 12 .
  • a portion of the outer circumference of the heating core is in contact with the insulating heat-conducting layer 12 , and another portion of the outer circumference is in contact with the insulating structure 15 .
  • the outer circumference of the heating core is in an arc shape
  • the insulating heat-conducting layer 12 is a film structure coated on the inner circumferential wall of the tubular member 11, and its inner side is also in an arc shape.
  • the outer circumference of the heating core is in contact with the inner side of the insulating heat-conducting layer 12, so that the heating core and the insulating heat-conducting layer 12 have a certain contact area, which can improve the heat conduction efficiency between the heating core and the insulating heat-conducting layer 12, and further improve the heating efficiency of the entire heating structure 10.
  • Another part of the outer circumference of the heating core is in contact with the insulating structure 15, that is, the insulating heat-conducting layer 12 and the insulating structure 15 wrap the heating core inside, so that the outer circumference of the heating core does not contact other structures, ensuring that the heating cores can be isolated from each other, and also ensuring that the heating core will not cause leakage to the tubular member 11.
  • one side of the heating core contacts or abuts against the insulating heat-conducting layer 12 , and the other side contacts or abuts against the insulating structure 15 .
  • the heating core is electrically connected to a power source of the heating device 100, and the power source can supply energy to the heating core, causing the heating core to generate heat, which is then transferred to the tubular member 11 through the insulating heat-conducting layer 12.
  • the power source can supply energy to the heating core, causing the heating core to generate heat, which is then transferred to the tubular member 11 through the insulating heat-conducting layer 12.
  • the target tissue can be cut or closed.
  • At least two heating cores include: a first heating core 13 and a second heating core 14 arranged in parallel.
  • the outermost side of the inner space of the tubular member 11 is the inner circumferential wall of the tubular member 11, and then inward in sequence are the insulating heat-conducting layer 12, the heating core (the first heating core 13 or the second heating core 14), and the insulating structure 15.
  • Multiple heating cores can be arranged close to the insulating heat-conducting layer 12 at intervals, and the heating cores are separated by the insulating structure 15 to avoid short circuits between the heating cores.
  • the use of multiple heating cores at intervals can reduce the space occupied by the heating cores in the tubular member 11, and can reduce the radial D dimension of the heating tube.
  • the insulating structure 15 also has a heat-conducting property, and the first heating core 13 and the second heating core 13 are The core 14 and the insulating structure 15 can conduct heat to each other, which can ensure the temperature uniformity of the heating structure 10, thereby ensuring the operating efficiency of the heating device 100 during operation, and reducing the consequences of inaccurate or time-consuming separation of the target tissue due to inconsistent temperature of the heating structure 10.
  • the heating structure 10 further includes: a first conductive wire 16.
  • the at least one heating core includes: a first heating core 13 and a second heating core 14 which are arranged in parallel and at intervals.
  • the first heating core 13 , the insulating structure 15 and the second heating core 14 are arranged in sequence along a direction perpendicular to the axial direction C of the tubular member 11 .
  • the first end of the first wire 16 is used to be electrically connected to the power supply of the heating device 100 , and the second end of the first wire 16 extends into the tubular member 11 and is electrically connected to the first end 131 of the first heating core 13 , and the second end 132 of the first heating core 13 is electrically connected to the second end 142 of the second heating core 14 .
  • the heat generated by the heating structure 10 can be controlled by controlling the magnitude of the current flowing inside it.
  • the first heating core 13 and the second heating core 14 are connected in series and powered by the first wire 16, so that operations such as cutting or closing can be basically achieved.
  • the first heating core 13 and the second heating core 14 are arranged in parallel in the tubular member 11 and are located in a direction perpendicular to the axial direction C of the tubular member 11. The two are separated by an insulating structure 15, which can make the internal layout of the heating structure 10 reasonable, the structure simple, and the radial D dimension small, which can shorten the radial D dimension of the heating structure 10, and is conducive to the miniaturization design of the heating device 100.
  • the tubular member 11, the first wire 16, and the first end of each heating core can be regarded as the proximal end of the heating structure 10, or the proximal end of the heating device 100, which is the end closer to the operator; the second end is regarded as the distal end of the heating structure 10, or the distal end of the heating device 100, which is also the end closer to the target tissue.
  • a conductor structure is disposed at the inner wall 113 of the second end 112 of the closed tubular member 11 , and the second end 132 of the first heating core 13 and the second end 142 of the second heating core 14 are both in contact with or connected to the conductor structure.
  • the first end 111 of the tubular member 11 is open, which is convenient for installing the heating core and the insulating structure 15 in the inner space of the tubular member 11.
  • the second end 112 of the tubular member 11 is closed, and the second end 112 of the tubular member 11 is the end for heating the target tissue.
  • the end 112 can prevent the inside of the tubular member 11 from contaminating the target tissue, and also prevent the target tissue from contaminating the inside of the tubular member 11 from contaminating each other, which makes it difficult to disinfect the tubular member 11.
  • the inner wall 113 at the closed portion of the tubular member 11 is provided with a conductor structure, which enables the first heating core 13 and the second heating core 14 arranged in parallel to be electrically connected through the inner wall 113 when both are close to the inner wall 113 and in contact with the inner wall 113.
  • the embodiment of the present application cleverly uses the structural features of the closed portion of the tubular member 11 to electrically connect the first heating core 13 and the second heating core 14, without the need to use other wires to electrically connect the first heating core 13 and the second heating core 14, which can make the internal structure of the heating structure 10 more streamlined, further reduce the components in the inner space of the tubular member 11, and thus reduce the radial D dimension of the heating structure 10.
  • the inner wall 113 of the tubular member 11 itself is a conductor, and the second end 132 of the first heating core 13 and the second end 142 of the second heating core 14 are in contact or abutment with the inner wall 113 of the tubular member 11 , and the first heating core 13 and the second heating core 14 can be electrically connected through the inner wall 113 .
  • the first end of the first wire 16 is used to be electrically connected to the first electrode of the power source, and the second end of the first wire 16 is electrically connected to the first end 131 of the first heating core 13 .
  • the first end 141 of the second heating core 14 is electrically connected to the tubular member 11 , and the tubular member 11 is electrically connected to the second electrode of the power source.
  • the tubular member 11 is also a conductor, and a circuit loop is formed between the power supply, the first wire 16, the first heating core 13, the conductor structure, the second heating core 14 and the tubular member 11.
  • the power supply provides electrical energy to the first heating core 13 and the second heating core 14.
  • the first heating core 13 and the second heating core 14 can convert the electrical energy into thermal energy, emit heat, and transfer the heat to the tubular member 11 as much as possible through the insulating heat-conducting layer 12, so that the outer surface of the tubular member 11 reaches the first design temperature, and the target tissue can be heated to separate it and the ends of the separated target tissue are closed.
  • the first end 141 of the second heating core 14 further has a bent portion, and the bent portion can be bent inside the fixing portion 17 to be electrically connected to the tubular member 11 .
  • the first end 141 of the second heating core 14 is also connected to a bent portion (i.e., the dotted line portion in the fixing portion 17 of FIG. 3 ), which is equivalent to bending one end of the second heating core 14 to the inner circumferential wall of the tubular member 11.
  • the inner circumferential wall is a conductor and can be led to a power source through the inner circumferential wall.
  • the wiring of the heating structure 10 can be omitted.
  • the heating structure 10 further includes: a second wire.
  • the first end 141 of the second heating core 14 is used to be electrically connected to the second electrode of the power source through a second wire.
  • a second wire may be provided to form a circuit loop among the power source, the first wire 16, the first heating core 13, the conductor structure, the second heating core 14 and the second wire, which is relatively simple to implement.
  • the heating structure 10 further includes: a fixing portion 17 located inside the tubular member 11 .
  • the fixing portion 17 is located at one end of each of the first heating core 13 and the second heating core 14 away from the inner wall 113 and is fixedly connected to the inner peripheral wall of the tubular member 11 .
  • the first conductive wire 16 passes through the fixing portion 17 .
  • the first heating core 13, the insulating structure 15 and the second heating core 14 can be regarded as being arranged in parallel with each other in the inner space of the tubular member 11, and their second ends are in contact or abutment with the inner wall 113, and the first ends are fixed by the fixing part 17, which plays a role of mutual restriction in the axial direction C, and the first heating core 13, the insulating structure 15 and the second heating core 14 are all fixed in the inner space of the tubular member 11, ensuring effective electrical connection between the first heating core 13 and the second heating core 14.
  • the heating structure 10 further includes: a sealant 18 located in the first end 111 of the tubular member 11 .
  • the sealant 18 is located at one end of the fixing portion 17 away from the first heating core 13 and is fixedly connected to the fixing portion 17 .
  • the circumferential surface of the sealant 18 is sealedly connected to the inner circumferential wall of the tubular member 11 to block the opening.
  • the first conductive wire 16 is passed through the sealant 18 .
  • the sealant 18 is located at one end of the fixing part 17 away from the first heating core 13 and the second heating core 14, and can fix and seal the fixing part 17 to prevent foreign matter from entering the space inside the tube from the first end 111 of the tubular member 11 and contaminating the heating cores, the insulating structure 15 or the insulating thermal conductive layer 12 in the tube, thereby affecting the heating performance of the first heating core 13 and the second heating core 14, affecting the insulating performance of the insulating structure 15, or affecting the insulating thermal conductive performance of the insulating thermal conductive layer 12.
  • the insulating heat-conducting layer 12 , the fixing portion 17 , the insulating structure 15 and the sealant 18 provided in the embodiment of the present application all have good high temperature resistance.
  • one end of the first wire 16 is electrically connected to the first heating core 13, a portion of the first wire 16 is passed through the fixing portion 17 and the sealant 18, and extends from a side of the sealant 18 away from the fixing portion 17, and is further electrically connected to the first electrode of the power supply.
  • the second wire can be connected with the first wire 16 at the fixing portion 17, pass through the fixing portion 17 and the sealant 18 simultaneously, and extend from the sealant 18 to be connected to the power source.
  • the axial C area coated by the insulating heat-conducting layer 12 corresponds to the axial C size of the first heating core 13 and the second heating core 14, the fixing part 17 is directly connected to the inner circumferential wall not coated with the insulating heat-conducting layer 12, and the sealant 18 is also directly connected to the inner circumferential wall not coated with the insulating heat-conducting layer 12.
  • an embodiment of the present application provides a heating device 100, as shown in FIG5 , the heating device 100 includes: any heating structure 10 provided in the first aspect above.
  • the heating device 100 provided in this embodiment includes any heating structure 10 provided in the above embodiments, and the implementation principle thereof is similar and will not be described in detail here.
  • the heating device 100 provided in the embodiment of the present application has one end of the heating structure 10 that can be inserted into the wound to perform cutting, separation, closure, coagulation and other operations on the target tissue.
  • the portion of the heating device 100 that is inserted into the wound is relatively small in volume and can be applied to scenes in narrow spaces.
  • operations such as cutting, separation, closure, and coagulation are medical procedures
  • the heating device 100 is used to perform medical procedures on target tissue at the wound during the operation.
  • the heating device 100 further includes: a first clamping member 20 and a second clamping member 30, which are used to clamp the target tissue in a closed state.
  • the heating structure 10 is disposed on the clamping surface of the first clamping member 20 and is electrically connected to the second electrode of the power source through the first clamping member.
  • the first clamping member 20 and the second clamping member 30 can be opened and closed to clamp the target tissue.
  • the heating structure 10 is arranged on the clamping surface of the first clamping member 20, which is also called the closing surface.
  • the target tissue can be heated during the clamping process, thereby achieving the cutting, separation, closure, coagulation and other operations of the target tissue.
  • the first clamping member 20 also has a conductive property.
  • the first clamping member 20 is welded to the tubular member 11 of the heating structure 10, which can make the second heating core 14,
  • the tubular member 11, the first clamping member 20 and the power source form an electrical connection path.
  • the heating structure 10 can also be disposed on the clamping surface of the second clamping member 30 , depending on actual needs.
  • the heating device 100 may be a surgical forceps having a heating structure 10 .
  • first clamp 20 and the second clamp 30 when the first clamp 20 and the second clamp 30 are in the open state, one end of the first clamp 20 and the second clamp 30 are closer and the other end is farther away, and a larger angle is formed between the first clamp 20 and the second clamp 30.
  • first clamp 20 and the second clamp 30 When the first clamp 20 and the second clamp 30 are in the closed state, the angle between the first clamp 20 and the second clamp 30 is reduced, and the target tissue can be clamped.
  • the closure does not mean that the clamping surface of the first clamp 20 and the clamping surface of the second clamp 30 are in contact with each other, but means that the angle between the first clamp 20 and the second clamp 30 is reduced to clamp the target tissue.
  • the heating device 100 further includes: a rod portion 40 .
  • the first clamping member 20 and the second clamping member 30 are both connected to one end of the rod 40 .
  • the first end 111 of the tubular member 11 of the heating structure 10 is close to the rod portion 40 , and the first wire 16 of the heating structure 10 extends into the inner cavity of the rod portion 40 .
  • the rod 40 can support the first clamp 20 and the second clamp 30, and the other end of the rod 40 is also provided with a control structure (such as a handle 50 integrated with the control structure), which can control the opening and closing between the first clamp 20 and the second clamp 30.
  • a control structure such as a handle 50 integrated with the control structure
  • the rod 40 is slender, which is also convenient for inserting into the body of the target object.
  • the first wire 16 of the heating structure 10 extends outward through the rod 40 (can extend to the handle 50), and then connected to the power supply, so that the first wire 16 is placed in a closed environment, which can protect the first wire 16, thereby increasing the service life of the first wire 16 and ensuring the effective power supply of the heating structure 10.
  • the clamping surface of the first clamping member 20 of the heating device 100 has a groove
  • the clamping surface of the second clamping member 30 has a clamping pad corresponding to the groove
  • the tubular member 11 of the heating structure 10 is embedded in the groove, and the diameter of the tubular member 11 is greater than the depth of the groove.
  • the heating structure 10 is embedded in the groove, and the groove limits the tubular member 11 on the clamping surface of the first clamping member 20.
  • the diameter of the tubular member 11 is greater than the depth of the groove, which can ensure that the first clamping member 20 is
  • the tubular member 11 is in effective contact with the target tissue when the first clamping member 20 and the second clamping member 30 are in a closed state.
  • a clamping pad is provided on the clamping surface of the second clamping member 30.
  • the clamping pad is made of a flexible material and has a certain elasticity.
  • the tubular member 11 is in contact with the clamping pad, which can protect and buffer the tubular member 11, and reduce the damage to the tubular member 11 caused by excessive friction caused by multiple openings and closings of the first clamping member 20 and the second clamping member 30.
  • the heating core and the insulating component in the heating structure 10 are both arranged in the inner space of the tubular member 11.
  • the insulating component can be wrapped around the circumference of the heating core to isolate the heating core from the tubular member 11, so that the heating core and the inner circumferential wall of the tubular member 11 are insulated from each other.
  • the heating structure 10 can generate heat and perform operations such as cutting, separation, and closing on the target tissue.
  • the heating structure 10 is composed of the heating core, the insulating component, and the inner circumferential wall of the tubular member 11 along the radial direction D of the tubular member 11, so that the size of the heating structure 10 along the radial direction D is relatively compact and the overall volume is small, which is conducive to the miniaturized design of the heating device 100 and can be applied to a narrower working space, thereby enriching the application scenarios of the heating device 100.
  • the outer circumference of the heating core is in an arc shape.
  • the insulating heat-conducting layer 12 is a film structure coated on the inner circumference of the tubular member 11, and its inner side is also in an arc shape.
  • the outer circumference of the heating core is in contact with the inner side of the insulating heat-conducting layer 12, so that the heating core and the insulating heat-conducting layer 12 have a certain contact area, which can improve the heat conduction efficiency between the heating core and the insulating heat-conducting layer 12, and further improve the heating efficiency of the entire heating structure 10.
  • Another part of the outer circumference of the heating core is in contact with the insulating structure 15, that is, the insulating heat-conducting layer 12 and the insulating structure 15 wrap the heating core inside, so that the outer circumference of the heating core does not contact other structures, ensuring that the heating cores can be isolated from each other, and also ensuring that the heating core will not cause leakage to the tubular member 11.
  • the heat generated by the heating structure 10 can be controlled by controlling the magnitude of the current flowing inside it.
  • the first heating core 13 and the second heating core 14 are connected in series and powered by the first wire 16, which can basically achieve cutting or closing operations.
  • the first heating core 13 and the second heating core 14 are arranged in parallel in the tubular member 11 and are located in a direction perpendicular to the axial direction C of the tubular member 11.
  • the two are separated by an insulating structure 15, which can make the heating structure
  • the internal layout of 10 is reasonable, the structure is simple, and the radial dimension D is small, which can shorten the radial dimension D of the heating structure 10 and is conducive to the miniaturized design of the heating device 100.
  • the first end 111 of the tubular member 11 is open, which is convenient for the installation of the heating core and the insulating structure 15 in the inner space of the tubular member 11.
  • the second end 112 of the tubular member 11 is closed.
  • the second end 112 of the tubular member 11 is the end for heating the target tissue.
  • the closed second end 112 can prevent the inside of the tubular member 11 from contaminating the target tissue, and also prevent the target tissue and the inside of the tubular member 11 from contaminating each other, which makes it difficult to disinfect the tubular member 11.
  • the inner wall 113 of the closed part of the tubular member 11 is provided with a conductor structure, which can make the first heating core 13 and the second heating core 14 arranged in parallel close to the inner wall 113 and in contact with the inner wall 113 to be electrically connected through the inner wall 113.
  • the embodiment of the present application cleverly uses the structural features of the closed part of the tubular member 11 to electrically connect the first heating core 13 and the second heating core 14. There is no need to use other wires to electrically connect the first heating core 13 and the second heating core 14, which can make the internal structure of the heating structure 10 more streamlined, further reduce the components in the space inside the tubular member 11, and thus reduce the radial D dimension of the heating structure 10.
  • the first heating core 13, the insulating structure 15 and the second heating core 14 can be regarded as being arranged in parallel with each other in the inner space of the tubular member 11, with their second ends contacting or abutting against the inner wall 113, and their first ends being fixed by the fixing portion 17, which play a role of mutual restriction in the axial direction C, and the first heating core 13, the insulating structure 15 and the second heating core 14 are all fixed in the inner space of the tubular member 11, ensuring effective electrical connection between the first heating core 13 and the second heating core 14.
  • the sealant 18 is located at one end of the fixing part 17 away from the first heating core 13 and the second heating core 14, and can fix and seal the fixing part 17 to prevent foreign matter from entering the space inside the tube from the first end 111 of the tubular member 11 and contaminating the heating cores, the insulating structure 15 or the insulating thermal conductive layer 12 in the tube, thereby affecting the heating performance of the first heating core 13 and the second heating core 14, affecting the insulating performance of the insulating structure 15, or affecting the insulating thermal conductive performance of the insulating thermal conductive layer 12.
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, “plurality” means two or more.
  • the terms “installed”, “connected”, and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components.
  • installed e.g., it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components.

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Abstract

Des modes de réalisation de la présente invention concernent une structure de chauffage et un dispositif de chauffage. La structure de chauffage comprend un élément tubulaire, au moins un noyau chauffant et un ensemble isolant, le ou les noyaux chauffants étant agencés dans l'ensemble isolant, et l'ensemble isolant étant disposé dans l'élément tubulaire. La structure de chauffage fournie dans les modes de réalisation de la présente invention a une taille radiale relativement compacte et un volume global relativement petit, ce qui facilite la conception de miniaturisation du dispositif de chauffage ; et la structure de chauffage peut être appropriée pour un espace de fonctionnement plus étroit, et peut ainsi enrichir des scénarios d'application du dispositif de chauffage.
PCT/CN2023/126910 2022-11-04 2023-10-26 Structure de chauffage et dispositif de chauffage WO2024093804A1 (fr)

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CN202211379680.3A CN115604874A (zh) 2022-11-04 2022-11-04 加热结构和加热装置

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Publication number Priority date Publication date Assignee Title
CN115604874A (zh) * 2022-11-04 2023-01-13 杭州维纳安可医疗科技有限责任公司（Cn） 加热结构和加热装置

Citations (5)

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Publication number Priority date Publication date Assignee Title
CN105934004A (zh) * 2016-06-27 2016-09-07 镇江市春鹏电器有限公司 一种电加热管
CN210491243U (zh) * 2019-08-16 2020-05-08 深圳市正大昌科技有限公司 一种新型电热管
CN212628457U (zh) * 2020-07-30 2021-02-26 佛山康疆电器科技有限公司 一种用于即热式饮水机的发热管组件
CN113967064A (zh) * 2020-03-27 2022-01-25 广州派若弥医疗器械有限公司 一种增强血管封闭功能热熔焊刀
CN115604874A (zh) * 2022-11-04 2023-01-13 杭州维纳安可医疗科技有限责任公司（Cn） 加热结构和加热装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105934004A (zh) * 2016-06-27 2016-09-07 镇江市春鹏电器有限公司 一种电加热管
CN210491243U (zh) * 2019-08-16 2020-05-08 深圳市正大昌科技有限公司 一种新型电热管
CN113967064A (zh) * 2020-03-27 2022-01-25 广州派若弥医疗器械有限公司 一种增强血管封闭功能热熔焊刀
CN212628457U (zh) * 2020-07-30 2021-02-26 佛山康疆电器科技有限公司 一种用于即热式饮水机的发热管组件
CN115604874A (zh) * 2022-11-04 2023-01-13 杭州维纳安可医疗科技有限责任公司（Cn） 加热结构和加热装置

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