Temperature-sensitive heating sheet and scalpel

Abstract

This utility model provides a temperature-sensing heating element and its scalpel, comprising a ceramic plate, a first circuit layer, a second circuit layer, a first insulating protective layer, and a second insulating protective layer. The ceramic plate is blade-shaped, with a push-pull protrusion at the lower end of the blade. The first circuit layer is disposed on the left blade side of the ceramic plate, and the second circuit layer is disposed on the right blade side. The first insulating protective layer covers the first circuit layer, and the second insulating protective layer covers the second circuit layer. The first circuit layer includes a first heating resistor circuit, a first temperature sensing circuit, a first heating electrode, and a first temperature sensing electrode. The second circuit layer includes a second heating resistor circuit, a second temperature sensing circuit, a second heating electrode, and a second temperature sensing electrode. The beneficial effects or advantages of this utility model are: the scalpel has a heating function; the blade can both cut the wound and accelerate blood clotting; the temperature sensing circuit monitors the temperature of the ceramic plate in real time; and the temperature-sensing heating element can be easily replaced.

Description

Technical Field

[0001] This utility model relates to the field of electric heating device technology, specifically to a temperature-sensing heating element and its surgical knife. Background Technology

[0002] High-temperature sintered ceramic heating elements (MCH) are a new generation of medium- and low-temperature heating elements produced by printing resistance paste directly onto alumina ceramic green bodies, sintering them at a high temperature of around 1600℃, and then processing them with electrodes and leads. They are widely used in many fields that require medium- and low-temperature heating, such as daily life, industrial and agricultural technology, communications, medical care, and environmental protection.

[0003] The scalpel is a crucial tool in medical surgery, used to cut and separate biological tissues. Traditional scalpels only perform this cutting function. However, current demands for scalpel functionality are increasing. They now require heating capabilities, enabling them to not only cut with their blade but also accelerate the clotting process through heating. Furthermore, they need to sense the current temperature of the scalpel and allow for easy replacement of the heating element. Therefore, this technical field requires a temperature-sensing heating element and a scalpel. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a temperature-sensing heating element and a surgical scalpel.

[0005] This utility model is implemented as follows: a temperature-sensing heating element includes a ceramic plate, a first circuit layer, a second circuit layer, a first insulating protective layer, and a second insulating protective layer. The ceramic plate is blade-shaped, and the lower end of the blade of the ceramic plate has a push-pull protrusion. The first circuit layer is disposed on the left blade side of the ceramic plate, and the second circuit layer is disposed on the right blade side of the ceramic plate. The first insulating protective layer covers the first circuit layer, and the second insulating protective layer covers the second circuit layer.

[0006] The first circuit layer includes a first heating resistor circuit, a first temperature sensing circuit, a first heating electrode and a first temperature sensing electrode. The first heating resistor circuit is adjacent to the blade edge of the ceramic plate, the first temperature sensing circuit is surrounded by the first heating resistor circuit, and the first heating electrode and the first temperature sensing electrode are located at the tail of the ceramic plate.

[0007] The second circuit layer includes a second heating resistor circuit, a second temperature sensing circuit, a second heating electrode and a second temperature sensing electrode. The second heating resistor circuit is adjacent to the blade edge of the ceramic plate, the second temperature sensing circuit is surrounded by the second heating resistor circuit, and the second heating electrode and the second temperature sensing electrode are located at the tail of the ceramic plate.

[0008] The ceramic plate has a heating through hole and a temperature sensing through hole. The first end of the first heating resistor circuit passes through the heating through hole and is connected to the first end of the second heating resistor circuit. The tail end of the first heating resistor circuit is connected to the first heating electrode, and the tail end of the second heating resistor circuit is connected to the second heating electrode. The first end of the first temperature sensing circuit passes through the temperature sensing through hole and is connected to the first end of the second temperature sensing circuit. The tail end of the first temperature sensing circuit is connected to the first temperature sensing electrode, and the tail end of the second temperature sensing circuit is connected to the second temperature sensing electrode.

[0009] Furthermore, the first circuit layer and the second circuit layer are arranged symmetrically with respect to the ceramic plate.

[0010] Furthermore, the blade of the ceramic plate has an arc-shaped portion or a beveled portion.

[0011] A surgical scalpel includes the aforementioned temperature-sensing heating element and a heat-conducting blade. The heat-conducting blade has a cavity that matches the temperature-sensing heating element. An electrode connection assembly is provided at the entrance and exit of the cavity. The electrode connection assembly includes a third heating electrode, a third temperature-sensing electrode, a fourth heating electrode, and a fourth temperature-sensing electrode. The third heating electrode and the third temperature-sensing electrode are located on the left side wall of the cavity, and the fourth heating electrode and the fourth temperature-sensing electrode are located on the right side wall of the cavity. A gap is provided at the lower end of the entrance and exit of the cavity. The temperature-sensing heating element is inserted into the cavity, and a push-pull protrusion protrudes from the gap. The first heating electrode is in contact with the third heating electrode, the second heating electrode is in contact with the fourth heating electrode, the first temperature-sensing electrode is in contact with the third temperature-sensing electrode, and the second temperature-sensing electrode is in contact with the fourth temperature-sensing electrode.

[0012] Furthermore, the third heating electrode, the third temperature sensing electrode, the fourth heating electrode, and the fourth temperature sensing electrode all include a compression spring structure.

[0013] Compared with the prior art, the beneficial effects or advantages of the present invention are as follows:

[0014] The ceramic plate of the temperature-sensing heating element is blade-shaped and serves as the heating element of the scalpel, enabling it to heat up. Both the left and right blade surfaces of the ceramic plate can generate heat and sense temperature. The heating resistor circuit is adjacent to the blade edge, which helps ensure uniform temperature distribution. The scalpel blade can both cut the wound and heat up to accelerate the clotting process. The temperature sensing circuit monitors the temperature of the ceramic plate in real time, making it easy to control the temperature of the scalpel within a specified range. The push-pull protrusion of the ceramic plate allows the surgeon to easily replace the temperature-sensing heating element from the cavity of the scalpel. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a planar schematic front view of the temperature-sensing heating element in this utility model.

[0017] Figure 2 yes Figure 1 Rear view.

[0018] Figure 3 This is a schematic diagram showing the positions of the ceramic plate, the first circuit layer, the second circuit layer, the first insulating protective layer, and the second insulating protective layer in this utility model.

[0019] Figure 4 This is a schematic diagram showing the positions of the scalpel and the cavity in this utility model.

[0020] Figure 5 yes Figure 4 A cross-sectional view along the AA direction.

[0021] Figure 6 This is a schematic front view of the temperature-sensing heating element inserted into the cavity in this utility model.

[0022] Figure 7 yes Figure 6 The right view.

[0023] Reference numerals: 1. Heating element; 11. Ceramic plate; 111. Push-pull protrusion; 112. Heating through hole; 113. Sensing through hole; 12. First circuit layer; 121. First heating resistor circuit; 122. First sensing temperature circuit; 123. First heating electrode; 124. First sensing temperature electrode; 13. Second circuit layer; 131. Second heating resistor circuit; 132. Second sensing temperature circuit; 133. Second heating electrode; 134. First insulating protective layer; 14. Second insulating protective layer; 15. Surgical knife; 2. Cavity; 22. Electrode connection assembly; 221. Third heating electrode; 222. Third sensing temperature electrode; 223. Fourth heating electrode; 224. Detailed Implementation

[0024] This utility model embodiment provides a temperature-sensitive heating element and its surgical scalpel. The overall technical concept is as follows:

[0025] The ceramic plate of the temperature-sensing heating element is blade-shaped and matches the cavity of the scalpel. Both the left and right blade surfaces of the ceramic plate are equipped with circuit layers, which contain heating resistor circuits and temperature sensing circuits. The heating resistor circuits generate heat at the position adjacent to the blade edge, which helps the scalpel blade to both cut the wound and heat the wound clotting. The temperature sensing circuits detect the temperature of the ceramic plate in real time, so the surgeon can know the current temperature of the scalpel. When it is necessary to replace the temperature-sensing heating element, the surgeon operates the push-pull protrusion to remove the temperature-sensing heating element from the cavity.

[0026] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0027] See Figures 1 to 7 The preferred embodiment of this utility model.

[0028] A temperature-sensing heating element 1 includes a ceramic plate 11, characterized in that it further includes a first circuit layer 12, a second circuit layer 13, a first insulating protective layer 14, and a second insulating protective layer 15. The ceramic plate 11 is blade-shaped, and the lower end of the blade of the ceramic plate 11 has a push-pull protrusion 111. The first circuit layer 12 is disposed on the left blade side of the ceramic plate 11, and the second circuit layer 13 is disposed on the right blade side of the ceramic plate 11. The first insulating protective layer 14 covers the first circuit layer 12, and the second insulating protective layer 15 covers the second circuit layer 13.

[0029] The first circuit layer 12 includes a first heating resistor circuit 121, a first temperature sensing circuit 122, a first heating electrode 123, and a first temperature sensing electrode 124. The first heating resistor circuit 121 is adjacent to the blade edge of the ceramic plate 11, the first temperature sensing circuit 122 is surrounded by the first heating resistor circuit 121, and the first heating electrode 123 and the first temperature sensing electrode 124 are located at the tail of the ceramic plate 11.

[0030] The second circuit layer 13 includes a second heating resistor circuit 131, a second temperature sensing circuit 132, a second heating electrode 133, and a second temperature sensing electrode 134. The second heating resistor circuit 131 is adjacent to the blade edge of the ceramic plate 11, the second temperature sensing circuit 132 is surrounded by the second heating resistor circuit 131, and the second heating electrode 133 and the second temperature sensing electrode 134 are located at the tail of the ceramic plate 11.

[0031] The blade of the ceramic plate 11 is provided with a heating through hole 112 and a temperature sensing through hole 113. The head of the first heating resistor line 121 passes through the heating through hole 112 and is connected to the head of the second heating resistor line 131. The tail of the first heating resistor line 121 is connected to the first heating electrode 123. The tail of the second heating resistor line 131 is connected to the second heating electrode 133. The head of the first temperature sensing line 122 passes through the temperature sensing through hole 113 and is connected to the head of the second temperature sensing line 132. The tail of the first temperature sensing line 122 is connected to the first temperature sensing electrode 124. The tail of the second temperature sensing line 132 is connected to the second temperature sensing electrode 134.

[0032] The beneficial effects or advantages of this utility model's technical solution are as follows: The ceramic plate 11 of the temperature-sensing heating element 1 is blade-shaped and is used as a heating element for the scalpel 2, enabling the scalpel 2 to have a heating function. Both the left and right blade surfaces of the ceramic plate 11 can generate heat and sense temperature. The heating resistor circuit is adjacent to the blade edge, which helps to ensure a uniform temperature distribution on the blade edge. This helps the blade edge of the scalpel 2 to both cut the wound and heat up to accelerate the coagulation process of the wound. The temperature sensing circuit detects the temperature of the ceramic plate 11 in real time, making it easy to control the temperature of the scalpel 2 within a specified range. The push-pull protrusion 111 of the ceramic plate 11 helps the surgeon to easily replace the temperature-sensing heating element 1 from the cavity 21 of the scalpel 2.

[0033] The first heating electrode 123 and the second heating electrode 133 are used to connect to the positive and negative terminals of the heating power supply, respectively. The first temperature sensing electrode 124 and the second temperature sensing electrode 134 are used to connect to two temperature sensing pins of the MCU, respectively. The first temperature sensing line 122 and the second temperature sensing line 132 serve as temperature sensors. The MCU adjusts the current of the heating power supply in real time according to the sensed temperature, changes the heating power of the heating circuit, and adjusts the temperature of the ceramic plate 11.

[0034] The first insulating protective layer 14 and the second insulating protective layer 15 use existing insulating and thermally conductive materials, such as glass, to prevent leakage current from the heating resistor circuit to the scalpel 2. The scalpel 2 is typically made of metal materials such as stainless steel.

[0035] The first insulating protective layer 14 does not cover the first heating electrode 123 and the first temperature sensing electrode 124, and the second insulating protective layer 15 does not cover the second heating electrode 133 and the second temperature sensing electrode 134, thus allowing for electrode connection.

[0036] The first circuit layer 12 and the second circuit layer 13 are symmetrically arranged with respect to the ceramic plate 11. This helps to achieve a uniform temperature distribution on the ceramic plate 11.

[0037] The blade tip of the ceramic plate 11 has an arc-shaped or beveled portion, matching the shape of the actual surgical scalpel 2.

[0038] A surgical scalpel 2 includes a temperature-sensing heating element 1 and a heat-conducting blade. The heat-conducting blade has a cavity 21 that matches the temperature-sensing heating element 1. An electrode connection assembly 22 is provided at the entrance and exit of the cavity 21. The electrode connection assembly 22 includes a third heating electrode 221, a fourth heating electrode 223, a third temperature-sensing electrode 222, and a fourth temperature-sensing electrode 224. The third heating electrode 221 and the third temperature-sensing electrode 222 are located on the left side wall of the cavity 21. The fourth heating electrode 223 and... The fourth temperature sensing electrode 224 is located on the right side wall of the cavity 21. A gap 211 is provided at the lower end of the inlet and outlet of the cavity 21. The temperature sensing heating element 1 is inserted into the cavity 21. The push-pull protrusion 111 protrudes from the gap 211. The first heating electrode 123 is in contact with the third heating electrode 221. The second heating electrode 133 is in contact with the fourth heating electrode 223. The first temperature sensing electrode 124 is in contact with the third temperature sensing electrode 222. The second temperature sensing electrode 134 is in contact with the fourth temperature sensing electrode 224.

[0039] The third heating electrode 221 and the fourth heating electrode 223 are connected to the positive and negative terminals of the heating power supply via wires, respectively; the second temperature sensing electrode 134 and the fourth temperature sensing electrode 224 are connected to two temperature sensing pins of the MCU via data lines, respectively.

[0040] When the temperature-sensing heating element 1 is inserted into the cavity 21, the first heating electrode 123 and the second heating electrode 133 respectively contact the third heating electrode 221 and the fourth heating electrode 223, and the first temperature-sensing electrode 124 and the second temperature-sensing electrode 134 respectively contact the third temperature-sensing electrode 222 and the fourth temperature-sensing electrode 224. The push-pull protrusion 111 protrudes from the lower end of the cavity 21, and the temperature-sensing heating element 1 is completely inside the cavity 21, ensuring that the corresponding electrodes are in contact. When the power is turned on, the temperature-sensing heating element 1 generates heat. When it is necessary to remove the temperature-sensing heating element 1, the power is turned off, and the operator presses the exposed push-pull protrusion 111 and then applies outward force to remove the temperature-sensing heating element 1 from the cavity 21. The operation is convenient.

[0041] The third heating electrode 221, the fourth heating electrode 223, the third temperature sensing electrode 222, and the fourth temperature sensing electrode 224 all include a compression spring structure (not shown). After the temperature sensing heating element 1 enters the cavity 21, under the action of the compression spring structure, the corresponding heating electrode and the corresponding temperature sensing electrode are in close contact, effectively avoiding poor electrode contact.

[0042] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A temperature-sensing heating element, comprising a ceramic plate, characterized in that: It also includes a first circuit layer, a second circuit layer, a first insulating protective layer and a second insulating protective layer. The ceramic plate is blade-shaped, and the lower end of the blade of the ceramic plate has a push-pull protrusion. The first circuit layer is disposed on the left blade side of the ceramic plate, and the second circuit layer is disposed on the right blade side of the ceramic plate. The first insulating protective layer covers the first circuit layer, and the second insulating protective layer covers the second circuit layer. The first circuit layer includes a first heating resistor circuit, a first temperature sensing circuit, a first heating electrode and a first temperature sensing electrode. The first heating resistor circuit is adjacent to the blade edge of the ceramic plate, the first temperature sensing circuit is surrounded by the first heating resistor circuit, and the first heating electrode and the first temperature sensing electrode are located at the tail of the ceramic plate. The second circuit layer includes a second heating resistor circuit, a second temperature sensing circuit, a second heating electrode and a second temperature sensing electrode. The second heating resistor circuit is adjacent to the blade edge of the ceramic plate, the second temperature sensing circuit is surrounded by the second heating resistor circuit, and the second heating electrode and the second temperature sensing electrode are located at the tail of the ceramic plate. The ceramic plate has a heating through hole and a temperature sensing through hole. The first end of the first heating resistor circuit passes through the heating through hole and is connected to the first end of the second heating resistor circuit. The tail end of the first heating resistor circuit is connected to the first heating electrode, and the tail end of the second heating resistor circuit is connected to the second heating electrode. The first end of the first temperature sensing circuit passes through the temperature sensing through hole and is connected to the first end of the second temperature sensing circuit. The tail end of the first temperature sensing circuit is connected to the first temperature sensing electrode, and the tail end of the second temperature sensing circuit is connected to the second temperature sensing electrode.

2. The temperature-sensing heating element according to claim 1, characterized in that: The first circuit layer and the second circuit layer are arranged symmetrically with respect to the ceramic plate.

3. The temperature-sensing heating element according to claim 1, characterized in that: The blade of the ceramic plate has an arc-shaped portion or a beveled portion.

4. A surgical scalpel, characterized in that: The device includes a temperature-sensing heating element as described in any one of claims 1 to 3, and further includes a heat-conducting tool. The heat-conducting tool is provided with a cavity that matches the temperature-sensing heating element. An electrode connection assembly is provided at the inlet and outlet of the cavity. The electrode connection assembly includes a third heating electrode, a third temperature-sensing electrode, a fourth heating electrode, and a fourth temperature-sensing electrode. The third heating electrode and the third temperature-sensing electrode are both located on the left side wall of the cavity, and the fourth heating electrode and the fourth temperature-sensing electrode are both located on the right side wall of the cavity. A gap is provided at the lower end of the inlet and outlet of the cavity. The temperature-sensing heating element is inserted into the cavity, and the push-pull protrusion protrudes from the gap. The first heating electrode is in contact with the third heating electrode, the second heating electrode is in contact with the fourth heating electrode, the first temperature-sensing electrode is in contact with the third temperature-sensing electrode, and the second temperature-sensing electrode is in contact with the fourth temperature-sensing electrode.

5. A surgical scalpel according to claim 4, characterized in that: The third heating electrode, the third temperature sensing electrode, the fourth heating electrode, and the fourth temperature sensing electrode all include a compression spring structure.

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