A temperature measuring sheath

Abstract

The application discloses a temperature measuring sheath, and relates to the technical field of sheaths, which comprises a hard tube with hardness, a deformable soft tube connected to the end of the hard tube, a temperature display installed at the other end of the hard tube, a protective ring slidably connected to the inner side wall of the soft tube, and a temperature sensor fixedly connected to one end of the protective ring. The pressure in the annular tube is increased by the pressure control component, so that the temperature sensor is moved to the outside of the soft tube by the pressure. The temperature of the surgical site of the patient is detected by the temperature sensor. The temperature sensor is electrically connected to the temperature display by the energizing component, so that the temperature detected by the temperature sensor is fed back by the temperature sensor, and the medical staff can timely grasp the surgical condition of the patient, thereby solving the problem that the sheath cannot detect the temperature of the surgical site of the patient in the prior art, which affects the treatment of the patient.

Description

Technical Field

[0001] This invention relates to the field of sheath technology, specifically a temperature-measuring sheath. Background Technology

[0002] In clinical practice, sheath kits are mainly used to enlarge percutaneous incisions and assist catheters in entering blood vessels during interventional procedures. When performing punctures on patients, a guide wire is inserted through the puncture needle, and then the sheath and dilator are combined to enlarge the percutaneous incision along the guide wire.

[0003] Currently, in minimally invasive surgery performed via a sheath, the sheath is typically inserted into the patient beforehand, and surgical instruments such as endoscopes are then inserted through the sheath to perform the surgery. However, the temperature at the surgical site can fluctuate during the procedure, and excessively high temperatures can pose a danger and affect the patient's treatment. Existing sheaths cannot detect the temperature at the surgical site, or if they do, the temperature cannot be observed by medical staff in a timely manner. Therefore, we propose a temperature-measuring sheath. Summary of the Invention

[0004] The purpose of this invention is to provide a temperature measuring sheath to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a temperature measuring sheath, comprising a rigid tube with rigidity, a deformable flexible tube connected to one end of the rigid tube, and a temperature display mounted on the other end of the rigid tube. A protective ring is slidably connected to the inner sidewall of the flexible tube, a temperature sensor is fixedly connected to one end of the protective ring, a sliding ring is fixedly connected to one end of the temperature sensor and slidably connected to the flexible tube, a push rod is fixedly connected to one end of the sliding ring, a movable ring is fixedly connected to one end of the push rod, and an annular tube fixed to the inner sidewall of the flexible tube is slidably connected to the outer surface of the movable ring. An air inlet pipe is connected to the end of the annular tube. The air inlet pipe is installed inside the side wall of the flexible tube and the rigid tube and extends to the end of the rigid tube. A wire is installed inside the air inlet pipe. One end of the wire is fixedly connected to a conductive rod that is fixed to the annular tube and slidably connected to the push rod. A current-carrying rod connected to the temperature sensor is slidably connected inside the conductive rod. One end of the air inlet pipe is connected to a pressure control component for controlling the air pressure inside the annular tube and thus driving the movable ring to move. The end of the wire extends to the outside of the end of the rigid tube and is connected to a current-carrying component connected to the temperature display.

[0006] Preferably, the pressure control component includes a pressure tube fixed inside the temperature display, one end of the pressure tube has a through hole, and the other end of the pressure tube is connected to a connecting member that communicates with the air inlet pipe, and a piston block is slidably connected inside the pressure tube, with a pushing member connected to the piston block.

[0007] Preferably, the connecting member includes a connector that communicates with the pressure pipe, one end of the connector is connected to a connecting pipe that communicates with the air intake pipe, a sealing sheet that fits against the end of the connector is fixedly connected to the outer surface of the connecting pipe, and the connecting pipe is movably connected to the connector.

[0008] Preferably, the pusher includes a threaded sleeve fixedly connected to the piston block, a threaded rod is internally threaded to the threaded sleeve, and the threaded sleeve is slidably connected to the pressure tube, with a drive member connected to the end of the threaded rod.

[0009] Preferably, the energizing component includes a fixing plate fixed inside the connecting tube, the fixing plate having multiple sets of vent holes, and an electric rod connected to the wire fixedly connected to the fixing plate, one end of the electric rod being fixedly connected to a first conductive block, and a connector installed inside the connector being connected to the first conductive block.

[0010] Preferably, the connector includes a connecting sleeve installed inside the connector head, the connecting sleeve being movably connected to the first conductive block, and a first spring being fixedly connected inside the connecting sleeve. One end of the first spring is fixedly connected to a second conductive block, and a connecting wire extending to the outside of the connector head and connected to the temperature display is connected to the second conductive block.

[0011] Preferably, a fixing sleeve is fixedly connected to the outer surface of the connecting tube, and two sets of first inclined blocks are fixedly connected to the outer surface of the fixing sleeve. The two sets of first inclined blocks are symmetrically arranged, and a second inclined block that is slidably connected to the outer surface of the first inclined block is movably connected to the temperature display. A sliding column is fixedly connected to the second inclined block, and a connecting piece that is fixedly connected to the temperature display is slidably connected to the outer surface of the sliding column. A second spring is fixedly connected between the connecting piece and the second inclined block, and a moving member for driving the second inclined block to move is connected to the second inclined block.

[0012] Preferably, the movable component includes two sets of fixed columns, with connecting columns fixedly connected to the fixed columns. A first rack is fixedly connected to one end of each connecting column. A spur gear, rotatably connected to the temperature sensor, meshes with the outer side of the first rack. A second rack meshes with the outer side of the spur gear. A connecting plate is fixedly connected to the second rack. A sliding rod is fixedly connected to the connecting plate. A button is fixedly connected to one end of the sliding rod. The fixed columns, connecting columns, first rack, second rack, connecting plate, sliding rod, and button are all slidably connected to the temperature sensor.

[0013] Preferably, the driving component includes a motor fixed inside the temperature sensor, the output end of the motor is fixedly connected to a coupling, one end of the coupling is fixedly connected to a drive shaft, and the end of the drive shaft is connected to a transmission component connected to the threaded rod.

[0014] Preferably, the transmission component includes a drive wheel fixedly connected to the drive shaft, a belt drivingly connected to the outer surface of the drive wheel, and a driven wheel fixedly connected to the threaded rod at one end of the belt.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention incorporates a temperature sensor and a temperature display. When monitoring the temperature at the patient's surgical site, a pressure control element increases the pressure within the annular tube. This pressure compresses a movable ring, which in turn moves a push rod. The push rod then moves a sliding ring and a temperature sensor oil droplet, moving the temperature sensor to the outside of the tubing. The temperature sensor then monitors the temperature at the surgical site. During this process, an energizing rod slides within a conductive rod, coordinating with the temperature sensor's movement. The energizing element electrically connects the temperature sensor to the temperature display, allowing the sensor to provide feedback on the detected temperature. This enables medical personnel to promptly monitor the patient's surgical condition, thus solving the problem in existing technologies where the sheath cannot monitor the temperature at the surgical site, affecting treatment.

[0016] By incorporating a first inclined block and a second inclined block, the connecting pipe can be fixed and limited, facilitating the pressure control component to deliver air pressure into the annular pipe. Furthermore, the second inclined block can be moved in conjunction with the moving component, making it easy to remove the connecting pipe. This allows the temperature sensor to be reused, reducing material damage.

[0017] The pressure control component facilitates the movement of the temperature sensor, ensuring that the temperature sensor remains inside the flexible tube during insertion into the patient's body. This prevents damage or loss of the temperature sensor during insertion and avoids friction with the patient's body, thus protecting both the temperature sensor and the patient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the hose end of the present invention; Figure 3 For the present invention Figure 3 Schematic diagram of the structure of area A in the middle; Figure 4This is a schematic diagram of the overall structure of the present invention after removing the rigid tube and the flexible tube; Figure 5 This is a schematic diagram of the sliding structure of the temperature sensor of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the structure of Zone B; Figure 7 This is a schematic diagram of the cross-sectional structure of the temperature display of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the structure of the middle C area; Figure 9 This is a schematic diagram of the internal structure of the temperature display of the present invention; Figure 10 This is a schematic diagram of the pressure control component structure of the present invention; Figure 11 For the present invention Figure 10 Schematic diagram of the structure of the middle D area; Figure 12 This is a schematic diagram of the connection structure between the connecting component and the energizing component of the present invention; Figure 13 For the present invention Figure 12 Schematic diagram of the structure of Zone E in the middle; Figure 14 This is a schematic diagram of the limiting structure for the first inclined block in this invention; Figure 15 This is a schematic diagram of the second inclined block moving structure of the present invention.

[0019] In the diagram: 1-Rigid tube; 2-Hose; 3-Temperature display; 4-Protective ring; 5-Temperature sensor; 6-Sliding ring; 7-Push rod; 8-Moving ring; 9-Annular tube; 10-Inlet pipe; 11-Wire; 12-Electrifying rod; 13-Pressure control component; 14-Electrifying component; 15-Pressure tube; 16-Through hole; 17-Piston block; 18-Push component; 19-Connecting component; 20-Connector; 21-Connecting tube; 22-Sealing plate; 23-Conductive rod; 24-Threaded sleeve; 25-Threaded rod; 26-Driver; 27-Fixing plate; 28-Ventilation hole; 29-Electrifying rod; 30- 31-Connecting sleeve; 32-Second conductive block; 33-First spring; 34-Connecting wire; 35-Connector; 36-Fixing sleeve; 37-First inclined block; 38-Second inclined block; 39-Sliding column; 40-Connecting piece; 41-Second spring; 42-Moving part; 43-Fixing column; 44-Connecting column; 45-First rack; 46-Side gear; 47-Second rack; 48-Connecting plate; 49-Sliding rod; 50-Button; 51-Motor; 52-Coupling; 53-Drive shaft; 54-Transmission part; 55-Driving wheel; 56-Belt; 57-Driven wheel. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-15This invention provides a technical solution: a temperature measuring sheath, comprising a rigid tube 1, with a deformable flexible tube 2 connected to one end of the rigid tube 1, and a temperature display 3 installed at the other end of the rigid tube 1. A protective ring 4 is slidably connected to the inner side wall of the flexible tube 2, a temperature sensor 5 is fixedly connected to one end of the protective ring 4, a sliding ring 6 is fixedly connected to one end of the temperature sensor 5 and slidably connected to the flexible tube 2, a push rod 7 is fixedly connected to one end of the sliding ring 6, a movable ring 8 is fixedly connected to one end of the push rod 7, and an annular tube 9 fixed to the inner side wall of the flexible tube 2 is slidably connected to the outer surface of the movable ring 8, and the end of the annular tube 9 is connected to an inlet. The air inlet pipe 10 is installed inside the side wall of the flexible tube 2 and the rigid tube 1, and extends to the end of the rigid tube 1. A wire 11 is installed inside the air inlet pipe 10. One end of the wire 11 is fixedly connected to a conductive rod 23 fixed to the annular tube 9 and slidably connected to the push rod 7. A power-conducting rod 12 connected to the temperature sensor 5 is slidably connected inside the conductive rod 23. One end of the air inlet pipe 10 is connected to a pressure control component 13 for controlling the air pressure inside the annular tube 9 and thereby driving the movable ring 8 to move. The end of the wire 11 extends to the outside of the end of the rigid tube 1 and is connected to a power-conducting component 14 connected to the temperature display 3. The pressure control component 13 includes a pressure tube 15 fixed inside the temperature display 3. One end of the pressure tube 15 has a through hole 16, and the other end of the pressure tube 15 is connected to a connecting component 19 that communicates with the air inlet pipe 10. A piston block 17 is slidably connected inside the pressure tube 15, and a pusher 18 is connected to the piston block 17. The connecting component 19 includes a connector 20 that communicates with the pressure tube 15. One end of the connector 20 is connected to a connecting tube 21 that communicates with the air inlet pipe 10. A sealing sheet 22 that fits against the end of the connector 20 is fixedly connected to the outer surface of the connecting tube 21. The connecting tube 21 and the connector 20 are connected to the connecting tube 20. 0. Active connection; The pusher 18 includes a threaded sleeve 24 fixedly connected to the piston block 17, a threaded rod 25 is threadedly connected to the threaded sleeve 24, and the threaded sleeve 24 is slidably connected to the pressure tube 15. The end of the threaded rod 25 is connected to a drive member 26; The energizing member 14 includes a fixing plate 27 fixed inside the connecting tube 21, a plurality of vent holes 28 are opened on the fixing plate 27, and an electric rod 29 connected to the wire 11 is fixedly connected to the fixing plate 27. One end of the electric rod 29 is fixedly connected to a first conductive block 30, and a connector 35 installed inside the connector head 20 is connected to the first conductive block 30;The connector 35 includes a connecting sleeve 31 installed inside the connector 20. The connecting sleeve 31 is movably connected to the first conductive block 30, and a first spring 33 is fixedly connected inside the connecting sleeve 31. One end of the first spring 33 is fixedly connected to a second conductive block 32, and a connecting wire 34 extending to the outside of the connector 20 and connected to the temperature display 3 is connected to the second conductive block 32.

[0022] A fixing sleeve 36 is fixedly connected to the outer surface of the connecting pipe 21. Two sets of first inclined blocks 37 are fixedly connected to the outer surface of the fixing sleeve 36. The two sets of first inclined blocks 37 are symmetrically arranged. A second inclined block 38, which is slidably connected to the outer surface of the first inclined block 37 and slidably connected to the temperature display 3, is fixedly connected to the second inclined block 38. A connecting piece 40, which is fixedly connected to the temperature display 3, is slidably connected to the outer surface of the sliding piece 39. A second spring 41 is fixedly connected between the connecting piece 40 and the second inclined block 38. A moving part 42 for moving the second inclined block 38 is connected to the second inclined block 38. The moving part 42 includes two sets of fixed posts 43. A connecting post 44 is fixedly connected to the fixed post 43. A first rack 45 is fixedly connected to one end of the connecting post 44. A spur gear 46, which is rotatably connected to the temperature sensor 5, meshes with the outer side of the first rack. A second rack 47 meshes with the outer side of the spur gear 46. A connecting plate 48 is fixedly connected to the second rack 47. A sliding rod 49 is fixedly connected to the connecting plate 48. A button 50 is fixedly connected to one end of the sliding rod 49. The fixed post 43, the connecting post 44, the first rack 45, the second rack 47, the connecting plate 48, the sliding rod 49, and the button 50 are all slidably connected to the temperature sensor 5.

[0023] The driving component 26 includes a motor 51 fixed inside the temperature sensor 5. The output end of the motor 51 is fixedly connected to a coupling 52. One end of the coupling 52 is fixedly connected to a drive shaft 53. The end of the drive shaft 53 is connected to a transmission component 54 connected to the threaded rod 25. The transmission component 54 includes a drive wheel 55 fixedly connected to the drive shaft 53. The outer surface of the drive wheel 55 is driven by a belt 56. One end of the belt 56 is driven by a driven wheel 57 fixedly connected to the threaded rod 25.

[0024] During patient treatment, a rigid tube 1 and a flexible tube 2 are inserted into the patient's body. The flexible tube 2 allows for movement within the patient's body, facilitating endoscopy observation from multiple angles. When temperature monitoring of the surgical site is required, a connecting tube 21 is placed inside a temperature sensor 5. During insertion, the connecting tube 21 is inserted into a connector 20, where a sealing plate 22 enhances the seal. After insertion, the first conductive block 30 is inserted into a connecting sleeve 31, contacting the second conductive block 32 and compressing the first spring 33. This ensures a tight seal between the first and second conductive blocks 30 and allows for conductivity. By activating the temperature monitor, the temperature is monitored. The motor 51 is started by controlling the control key on the temperature monitor. The motor 51 drives the coupling 52 to rotate, which in turn drives the drive shaft 53 to rotate, which in turn drives the drive wheel 55 to rotate. This, in turn, causes the driven wheel 57 to rotate via the belt 56, which in turn drives the threaded rod 25 to rotate. The threaded rod 25 then causes the threaded sleeve 24 to move the piston block 17. This movement of the piston block 17 compresses the air pressure in the pressure pipe 15 into the connector 20, which then delivers it to the connecting pipe 21. The air pressure then increases in the annular pipe 9 via the air inlet pipe 10, causing the movable ring 8 to move. This movement of the push rod 7 then drives the sliding ring 6 to move... The temperature sensor 5 moves to the outside of the tubing 2, thus detecting the patient's surgical position. The temperature sensor 5 is connected to the temperature display 3 through the conductive rod 23, the energized rod 12, the wire 11, the electric rod 29, the first conductive block 30, the second conductive block 32, and the connecting wire 34, so that the temperature can be fed back on the temperature display 3. This makes it easy for medical staff to know the temperature status in time, which is beneficial to the patient's treatment. (Note that when the push rod 7 pushes down the sliding ring 6, the temperature sensor 5 will drive the energized rod 12 to slide inside the conductive rod 23. The movement of the temperature sensor 5 is coordinated by the mutual sliding between the energized rod 12 and the conductive rod 23.) After the surgery, by controlling the motor 51 to reverse, the piston block 17 moves backward, thus creating negative pressure inside the annular tube 9. At this time, the movable ring 8 will move in the opposite direction to reset, and the push rod 7 and sliding ring 6 will drive the temperature sensor 5 to move in the opposite direction to reset, thereby preventing the temperature sensor 5 from being damaged or falling into the patient's body and affecting the patient's health. After the temperature sensor 5 resets, the rigid tube 1 and the flexible tube 2 are pulled out. At this time, by pressing the button 50, the sliding rod 49 moves, thus driving the connecting plate 48 to move, which in turn drives the second rack 47 to move, which in turn drives the spur gear 46 to rotate, thus driving the first rack 45 to move, which in turn drives the connecting rod to move, which in turn drives the fixed rod to move, which in turn drives the second inclined block 38 to move.This causes the second inclined block 38 to move away from the first inclined block 37. At this point, the first inclined block 37 loses the squeezing effect of the second inclined block 38, and therefore the first inclined block 37 is not limited, making it easy to pull out the connecting tube 21. At this time, the temperature display 3 can be used again. (It is worth noting that during the insertion of the connecting tube 21, the angled edges of the first inclined block 37 and the second inclined block 38 come into contact, so the first inclined block 37 will squeeze the second inclined block 38 to move until the first inclined block 37 moves to the top of the second inclined block 38. At this time, the second inclined block 38 is reset by the action of the second spring 41.) The first inclined block 37 is used to limit the movement of the connecting tube 21, preventing it from detaching. When button 50 is pressed, the second inclined block 38 moves, and the first inclined block 37 loses its limiting position. Therefore, the release of the spring 33 causes the first conductive block 30 to move backward, which in turn moves the connecting tube 21 backward, thus causing the first inclined block 37 to move backward. When button 50 is released, the inclined edges of the first inclined block 37 and the second inclined block 38 contact each other, thus not affecting the removal of the first inclined block 37 and the connecting tube 21. Therefore, it is not necessary to keep button 50 pressed when removing the connecting tube 21, making disassembly more convenient.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature-measuring sheath, characterized in that, include: A rigid tube (1) with rigidity is provided. A deformable flexible tube (2) is connected to one end of the rigid tube (1), and a temperature display (3) is installed at the other end of the rigid tube (1). A protective ring (4) is slidably connected to the inside of the side wall of the flexible tube (2). A temperature sensor (5) is fixedly connected to one end of the protective ring (4). A sliding ring (6) is slidably connected to one end of the temperature sensor (5). A push rod (7) is fixedly connected to one end of the sliding ring (6). A movable ring (8) is fixedly connected to one end of the push rod (7). An annular tube (9) fixed to the inner side wall of the flexible tube (2) is slidably connected to the outer surface of the movable ring (8). An air inlet pipe (10) is connected to the end of the annular tube (9). (10) Installed in the side wall of the hose (2) and the rigid tube (1) and extending to the end of the rigid tube (1), and a wire (11) is installed in the air inlet pipe (10). One end of the wire (11) is fixedly connected to a conductive rod (23) fixed to the annular tube (9) and slidably connected to the push rod (7). A power-conducting rod (12) connected to the temperature sensor (5) is slidably connected in the conductive rod (23). One end of the air inlet pipe (10) is connected to a pressure control component (13) for controlling the air pressure inside the annular tube (9) and thereby driving the movable ring (8) to move. The end of the wire (11) extends to the outside of the end of the rigid tube (1) and is connected to a power-conducting component (14) connected to the temperature display (3). The pressure control component (13) includes a pressure tube (15) fixed inside the temperature display (3). One end of the pressure tube (15) is provided with a through hole (16), and the other end of the pressure tube (15) is connected to a connecting component (19) that is connected to the air inlet pipe (10). A piston block (17) is slidably connected inside the pressure tube (15), and a pusher (18) is connected to the piston block (17).

2. The temperature measuring sheath according to claim 1, characterized in that: The connecting member (19) includes a connector (20) that communicates with the pressure pipe (15). One end of the connector (20) is connected to a connecting pipe (21) that communicates with the air intake pipe (10). A sealing sheet (22) that fits against the end of the connector (20) is fixedly connected to the outer surface of the connecting pipe (21), and the connecting pipe (21) is movably connected to the connector (20).

3. A temperature measuring sheath according to claim 2, characterized in that: The pusher (18) includes a threaded sleeve (24) fixedly connected to the piston block (17), a threaded rod (25) is internally threaded to the threaded sleeve (24), and the threaded sleeve (24) is slidably connected to the pressure tube (15). The end of the threaded rod (25) is connected to a drive member (26).

4. A temperature measuring sheath according to claim 3, characterized in that: The power supply component (14) includes a fixing plate (27) fixed inside the connecting tube (21). The fixing plate (27) has multiple sets of ventilation holes (28). The fixing plate (27) is fixedly connected to an electric rod (29) connected to the wire (11). One end of the electric rod (29) is fixedly connected to a first conductive block (30). The first conductive block (30) is connected to a connector (35) installed inside the connector (20).

5. A temperature measuring sheath according to claim 4, characterized in that: The connector (35) includes a connecting sleeve (31) installed inside the connector (20). The connecting sleeve (31) is movably connected to the first conductive block (30), and a first spring (33) is fixedly connected inside the connecting sleeve (31). One end of the first spring (33) is fixedly connected to a second conductive block (32), and a connecting wire (34) extending to the outside of the connector (20) and connected to the temperature display (3) is connected to the second conductive block (32).

6. A temperature measuring sheath according to claim 5, characterized in that: A fixed sleeve (36) is fixedly connected to the outer surface of the connecting tube (21). Two sets of first inclined blocks (37) are fixedly connected to the outer surface of the fixed sleeve (36). The two sets of first inclined blocks (37) are symmetrically arranged. A second inclined block (38) is movably connected to the outer surface of the first inclined block (37) and slidably connected to the temperature display (3). A sliding column (39) is fixedly connected to the second inclined block (38). A connecting piece (40) is slidably connected to the outer surface of the sliding column (39) and fixedly connected to the temperature display (3). A second spring (41) is fixedly connected between the connecting piece (40) and the second inclined block (38). A moving part (42) for driving the second inclined block (38) to move is connected to the second inclined block (38).

7. A temperature measuring sheath according to claim 6, characterized in that: The movable component (42) includes two sets of fixed columns (43). A connecting column (44) is fixedly connected to the fixed column (43). A first rack (45) is fixedly connected to one end of the connecting column (44). A spur gear (46) that is rotatably connected to the temperature sensor (5) is meshed on the outer side of the first rack (45). A second rack (47) is meshed on the outer side of the spur gear (46). A connecting plate (48) is fixedly connected to the second rack (47). A sliding rod (49) is fixedly connected to the connecting plate (48). A button (50) is fixedly connected to one end of the sliding rod (49). The fixed column (43), connecting column (44), first rack (45), second rack (47), connecting plate (48), sliding rod (49) and button (50) are all slidably connected to the temperature sensor (5).

8. A temperature measuring sheath according to claim 7, characterized in that: The drive unit (26) includes a motor (51) fixed inside the temperature sensor (5), the output end of the motor (51) is fixedly connected to a coupling (52), one end of the coupling (52) is fixedly connected to a drive shaft (53), and the end of the drive shaft (53) is connected to a transmission component (54) connected to the threaded rod (25).

9. A temperature measuring sheath according to claim 8, characterized in that: The transmission component (54) includes a drive wheel (55) fixedly connected to the drive shaft (53), a belt (56) is drivenly connected to the outer surface of the drive wheel (55), and a driven wheel (57) fixedly connected to the threaded rod (25) is drivenly connected to one end of the belt (56).

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