Cryoprobe and communicating structure and fastening structure thereof

Abstract

The invention belongs to the field of medical instrument research / manufacturing, particularly relates to a cryoprobe and a communication structure and a fastening structure thereof, and aims to improve the assembly efficiency, the sealing performance and the operation convenience of cryosurgery equipment. The communicating part is in a cylinder design and comprises a center hole, a side hole, a connecting hole and a radial hole, gas circulation and separation of the inner pipe and the outer pipe are achieved, sealing and stability are guaranteed through three-stage hole opening and a connecting sleeve, and the radial hole blocking step is omitted. The tail end connecting pipe optimizes the airflow path through the inner pipe, the outer pipe and the supporting piece which are distributed in a staggered mode. The fastening structure supports rapid disassembly and assembly through a lock pin, a locking hole / groove and a spring mechanism, cleaning and disinfection are convenient, and meanwhile the high-pressure airflow connection strength is guaranteed. The freezing head is made of metal and heat insulation non-metal composite materials, healthy tissue is protected through partition design and an adjustable freezing area, and the requirements of different lesion areas are met.

Description

Technical Field

[0001] The present application belongs to the field of medical device research / manufacturing, and specifically relates to a cryoprobe and its connecting structure and fastening structure. Background Art

[0002] Regarding the cryosurgical device, the applicant proposed a base with a fluid pipeline in the prior invention application number: 2025110357352, application name: "Fluid gear adjustment component, manufacturing method and cryosurgical device including the component", in which a support member for supporting the extended inner tube is mentioned in the right-facing opening on the base, and it is pointed out that a through hole needs to be opened on the support member to achieve gas reflux.

[0003] In the present application, the structure of the support is further optimized to make it a key component for connecting the cryoprobe, and cooperate with the connecting components on the cryoprobe to form a complete and easy-to-implement connecting structure;

[0004] At the same time, the fastening connection of the cryoprobe has been further optimized to ensure the reliability of the cryoprobe with quick detachable connection after connection. Summary of the Invention

[0005] In order to solve the above technical problems, this application provides a new technical solution, which is as follows:

[0006] A connecting structure of a cryoprobe, comprising connecting components,

[0007] The connecting component is cylindrical as a whole, with a central hole formed at the front end thereof, and at least one side hole formed around the central hole, parallel to the central hole and not penetrating the connecting component;

[0008] A connecting hole is provided at the end of the connecting component, the diameter of the connecting hole is larger than the center hole, the center hole passes through to the bottom of the connecting hole, and the connecting hole does not overlap with the side hole;

[0009] A radial hole is provided on the side wall of the connecting component close to the end and pointing to the axis, and the radial hole passes through the side hole and the connecting hole.

[0010] The central hole is used for the inner tube in the base to pass through the tube for the inner tube gas circulation in the base, the side holes on both sides are used for the gas circulation of the outer tube, and the radial holes connect the side holes to the connecting hole as the connecting port of the outer tube, that is, the connecting port of the inner tube is located at the bottom of the connecting hole, and the connecting port of the outer tube is located on the side wall of the connecting hole, which is convenient for connecting the freezing probe.

[0011] Furthermore, two side holes are symmetrically opened, and the radial hole passes through the two side holes at the same time. The symmetrically opened side holes make the central axes of the two side holes and the connecting hole located on the same plane, so that one radial hole can pass through and connect at the same time.

[0012] Furthermore, the connection hole is a three-step opening, which is beneficial for sealing and stability when connecting the freezing probe.

[0013] Furthermore, it also includes a connecting sleeve, which wraps a part of the connecting component. A cylindrical connecting seat is provided at the end of the connecting sleeve. The diameter of the central inner hole of the cylindrical connecting seat is greater than or equal to the diameter of the outermost end of the connecting hole. The terminal connecting end of the freezing probe is embedded in the connecting hole after passing through the cylindrical connecting seat. The inner wall of the connecting sleeve covers the openings at both ends of the radial hole, eliminating the step of sealing the two ends of the radial hole.

[0014] Furthermore, it also includes a terminal connecting tube of the cryoprobe, which includes an inner tube and an outer tube that are staggered, wherein the inner tube is located at the center of the outer tube, the two are nested and connected, an airflow cavity is between the outer tube and the inner tube, the end of the inner tube extends out of the outer tube, and a support is provided on the inner wall of the outer tube near the end, the support connects the inner wall of the outer tube and the outer wall of the inner tube, and a plurality of through holes are provided around the support;

[0015] The terminal connecting pipe also includes an elastic connector sleeved on the end of the inner tube, and the elastic connector has a central opening. The central opening connects the inner tube and the central hole when the terminal connecting pipe is connected to the connecting component. That is, the end of the elastic component wraps around and sleeves the base inner tube extending from the central hole, so that the base inner tube is connected to the probe inner tube (the base inner tube and the probe inner tube are the same airflow channel, and are named for the convenience of distinguishing them);

[0016] A radial flow hole is formed in the portion of the support member located outside the end of the outer tube and ending between the elastic connectors. The flow hole is connected to the axial through hole on the support member and is connected to the connecting hole and the radial hole.

[0017] The present application also provides a fastening structure for a cryoprobe, the purpose of which is to provide a detachable front probe that is easy to clean and disinfect and can be quickly disassembled and assembled. However, the high-pressure airflow in the inner tube requires a higher connection strength, so a fastening mechanism is required to ensure the connection. A sleeve connector is provided at the end of the cryoprobe to cooperate with the aforementioned cylindrical connector seat, and the connection method is a sleeve connection or a threaded connection.

[0018] The side wall of the sleeve connector is provided with a locking hole or a locking groove extending radially around the sleeve connector, and further includes a locking pin provided on the outer shell, which can be embedded in the locking hole or the locking groove. The locking pin can achieve sleeve locking or prevent loosening during the threaded connection.

[0019] Furthermore, a lock hole is opened on the outer shell, and a support spring seat is arranged inside the lock hole. The support spring seat is an annular support with a hole diameter smaller than the lock hole, and the outer wall is fixedly connected to the inner wall of the lock hole. A tensioning spring seat is provided near the end of the lock pin. The tensioning spring seat is also an annular support seat, and its inner ring is fixedly connected to the lock pin. A spring is provided between the support spring seat and the tensioning spring seat. The spring always tends to press the lock pin downward through its own extension.

[0020] A spiral slope support platform is provided on the external shell, and a rotating support bar is provided on the outer end of the locking pin. The rotating support bar can be rotated to the slope support platform. By rotating the supporting bar toward the spiral slope support platform, the distance between the bottom edge of the support bar and the supporting surface of the external shell is increased, thereby driving the locking pin to disengage from the locking hole or locking groove for disassembly. After installation, you only need to rotate the support bar in the opposite direction to disengage it from the spiral slope support platform.

[0021] Furthermore, a cryoprobe includes a tube body, a connecting end, and a cryoprobe, wherein the connecting end is arranged at the front end of the tube body, and the cryoprobe is arranged at the end of the tube body.

[0022] The connecting end includes the aforementioned sleeve connector and the end connecting pipe, and also includes a rotating head. The central opening of the sleeve connector and the rotating head wraps around the tube body. The end of the sleeve connector is used to connect to the cylindrical connector seat. The two sides of the front end are partially cut away and embedded in the rotating head. The center of the end of the rotating head is expanded. The expanded hole contour fits and connects with the front end of the sleeve connector. The outer side of the rotating head is provided with a hand-held anti-slip groove.

[0023] The tube body comprises the aforementioned outer tube and the probe inner tube which are nested and connected, and the outer wall of the outer tube is provided with a heat insulation protection tube;

[0024] A connector is provided at the end of the tube body. The connector is embedded in the front end of the tube body and is hollow. The freezing head is connected to the connector.

[0025] Furthermore, the freezing head is made of a composite of metal and insulating non-metallic materials, the middle part of which is made of metal and the outer ring is made of non-metallic insulating material. During the cryosurgery, the front tip of the freezing head usually contacts the diseased tissue to implement freezing and killing, and its outer edge can sometimes provide support to the surrounding tissue to form a treatment cavity, so it will contact non-lesioned tissue. The design of the composite material can avoid damaging healthy tissue and achieve partitioned freezing.

[0026] Furthermore, the freezing head includes a frame structure made of a heat-insulating non-metallic material and includes an embedded metal freezing zone;

[0027] The framework consists of a peripheral structure, an isolation structure, and connecting components. The peripheral structure is a hollow conical structure, and the isolation structure is a cylindrical structure located in the middle of the peripheral structure. The two are connected at the bottom. Metal freezing materials are set inside and outside the isolation structure as freezing zones. The metal connectors of the two extend downward to the freezing head connection part. They are also arranged in zones, and the two metal connectors are distributed on half of the side wall within 180 degrees. By rotating the connection part, the metal connection seat is connected to one metal connector on the connection part, and the two metal connectors are connected to each other. This can change the size of the freezing zone to adapt to the different areas of different lesions.

[0028] The beneficial effects of this application are:

[0029] 1. By designing a specific layout of the central hole, side holes, connecting holes, and radial holes, the gas flow of the inner and outer tubes is separated, which facilitates the rapid access of the cryoprobe and avoids the complex problem of pipe overlap, thereby improving the compactness of the overall structure and operational efficiency.

[0030] 2. The connection hole adopts a three-step opening design, combined with the wrapping of the connecting sleeve and the embedding of the cylindrical connecting seat, to ensure the sealing effect during the connection process and prevent gas leakage. At the same time, the connecting sleeve covers the radial hole opening, eliminating the need for additional sealing steps, reducing assembly complexity and potential failure risks.

[0031] 3. The fastening structure uses a locking pin and locking hole / slot, as well as a spring and spiral slope support mechanism, to support quick disassembly and assembly, facilitating cleaning and disinfection of the cryoprobe. At the same time, it provides higher connection strength, ensuring the stable flow of high-pressure airflow in the inner tube and preventing loosening or falling off.

[0032] 4. The staggered distribution design of the terminal connecting pipes and the through holes and flow holes on the support ensure that the airflow cavity between the inner and outer tubes is smoothly connected to the connecting components, reducing airflow resistance and improving freezing efficiency.

[0033] 5. The cryotherapy head adopts a composite design of metal and heat-insulating non-metallic materials, as well as isolation and connection components in the frame structure, to achieve zoning control of the freezing area and avoid damage to non-lesioned tissues. By rotating the connection part to adjust the conduction mode of the metal connector, the size of the freezing area can be flexibly changed to meet the needs of different lesion areas, thereby improving surgical accuracy and safety.

[0034] 6. The heat-insulating protection tube on the outer wall of the tube and the hand-held anti-slip groove of the rotating head improve the comfort and safety of operation; it has good practicality and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the interconnection components of Example 1 of the present application;

[0036] Figure 2 This is a schematic diagram of the interconnection structure of Example 1 of this application;

[0037] Figure 3 This is a schematic diagram of the end connector of Example 1 of the present application. The locking hole in Example 2 can also refer to this figure;

[0038] Figure 4 This is a schematic diagram of the structure of the outer shell of Example 2 of the present application;

[0039] Figure 5 This is a schematic diagram of the fastening principle of the second embodiment of the present application;

[0040] Figure 6 This is a schematic diagram of a sleeve connector according to the second embodiment of the present application;

[0041] Figure 7 This is a schematic diagram of a rotating head according to the second embodiment of the present application;

[0042] Figure 8 This is a schematic diagram of the internal structure of Example 3 of the present application;

[0043] Figure 9 This is a schematic diagram of a freezing head according to the third embodiment of the present application;

[0044] Figure 10 for Figure 9 sectional view of

[0045] Figure 11 This is a schematic diagram of another freezing head according to the third embodiment of the present application.

[0046] In the figure: 1, connecting component; 2, center hole; 3, side hole; 4, connecting hole; 5, radial hole; 6, base inner tube; 7, fixing groove; 8, connecting sleeve; 9, cylindrical connecting seat; 10, outer tube fastening washer; 11, sleeve connecting piece; 12, probe inner tube; 13, outer tube; 14, supporting piece; 15, elastic connecting piece; 16, flow hole; 17, locking hole; 18, outer shell; 19, locking pin; 20, locking hole; 21, support spring seat; 22, Tensioning spring seat; 23. Spring; 24. Spiral slope support platform; 25. Rotating support bar; 26. Freezing head; 27. Rotating head; 28. Thermal insulation protection tube; 29. ​​Connecting head; 30. High-pressure capillary; 31. Porous support structure; 32. Middle freezing zone; 33. Outer edge support zone; 34. Frame structure; 35. Isolation structure; 36. First metal connecting head; 37. Inner ring freezing zone; 38. Second metal connecting head; 39. Outer ring freezing zone. DETAILED DESCRIPTION

[0047] Example 1:

[0048] like Figure 1-3As shown, a connecting structure of a cryoprobe includes a connecting component 1,

[0049] Reference Figure 1 The connecting component 1 is a cylindrical body as a whole, and a central hole 2 is opened at the front end of the connecting component 1. Two symmetrical side holes 3 are opened around the central hole 2 and are parallel to the central hole 2 and do not pass through the connecting component 1;

[0050] A connecting hole 4 is provided at the end of the connecting component 1. The diameter of the connecting hole 4 is larger than that of the central hole 2. The central hole 2 passes through to the bottom of the connecting hole 4. The connecting hole 4 does not overlap with the side hole 3.

[0051] A radial hole 5 is formed on the side wall of the connecting component 1 near the end and pointing toward the axis, and the radial hole 5 passes through the side hole 3 and the connecting hole 4.

[0052] The central hole 2 is used for gas circulation in the base inner tube 6 inside the base, and the side holes 3 on both sides are used for gas circulation in the outer tube 13. The radial holes 5 connect the side holes 3 to the connecting hole 4 as the connecting port of the outer tube 13, that is, the connecting port of the probe inner tube 12 is located at the bottom of the connecting hole 4, and the connecting port of the outer tube 13 is located on the side wall of the connecting hole 4, which is convenient for connecting the freezing probe.

[0053] There are two symmetrical side holes 3 , and the symmetrical side holes 3 make the central axes of the two side holes 3 and the connecting hole 4 located on the same plane, so that a radial hole 5 can penetrate and connect them at the same time.

[0054] Reference Figure 2 The connection hole 4 is a three-step opening, which is beneficial for sealing and stability when connecting the freezing probe.

[0055] Reference Figure 2 The front end of the connecting component 1 is located inside the base, and its side wall is provided with a circle of fixing grooves 7 for reinforcing connection with the base. The end of the connecting component 1 is a tapered surface.

[0056] The assembly further includes a connecting sleeve 8, the front end of which is fixed to the base. The connecting sleeve 8 wraps around a portion of the connecting component 1, and the inner wall of the connecting sleeve 8 covers the openings at both ends of the radial hole 5, eliminating the need for sealing the ends of the radial hole 5. The connecting sleeve 8 has a tapered countersunk hole (a horizontal countersunk hole in the figure) designed to mate with the aforementioned tapered surface. The end of the connecting sleeve 8 is provided with a cylindrical connecting seat 9, the inner wall of which is tapered. The inner clamp is provided with an outer tube fastening washer 10. Through the sleeve connector 11, the outer tube fastening washer 10 is pressed after snapping or screwing the connection, further tightening the entire connection structure.

[0057] The diameter of the central inner hole of the cylindrical connecting seat 9 is equal to the diameter of the outermost end of the connecting hole 4. The terminal connecting end of the cryoprobe passes through the cylindrical connecting seat 9 and is embedded in the connecting hole 4.

[0058] The structure also includes a terminal connecting tube of the cryoprobe, which includes a staggered distribution of probe inner tubes 12 and outer tubes 13, wherein the probe inner tube 12 is located at the center of the outer tube 13, and the two are nested and connected. There is an airflow cavity between the outer tube 13 and the probe inner tube 12, and the end of the inner tube extends out of the outer tube 13. A support member 14 is provided on the inner wall of the outer tube 13 near the end, and the support member 14 connects the inner wall of the outer tube 13 and the outer wall of the inner tube. Four through holes are provided around the support member 14.

[0059] The end connecting pipe also includes an elastic connector 15 sleeved on the end of the inner tube. The elastic connector 15 has a central opening. When the end connecting pipe is connected to the connecting component 1, the central opening connects the probe inner tube 12 and the central hole 2. That is, the end of the elastic component wraps around the base inner tube 6 extending from the central hole 2, so that the base inner tube 6 is connected to the probe inner tube 12.

[0060] A radial flow hole 16 is formed in the portion of the support member 14 between the end of the outer tube 13 and the elastic connector 15. The flow hole 16 is connected to the axial through hole on the support member 14 and is connected to the connecting hole 4 and the radial hole 5 to achieve airflow communication.

[0061] Example 2:

[0062] like Figure 4-7 As shown, the present application also provides a fastening structure of a cryoprobe. The purpose of the present application is to provide a detachable front probe, which is convenient for cleaning and disinfection and can be quickly disassembled and assembled. However, the high-pressure airflow in the inner tube requires a higher connection strength, so a fastening mechanism is required to ensure the connection. A sleeve connector 11 is provided at the end of the cryoprobe to cooperate with the aforementioned cylindrical connector 9, and the connection method is a sleeve connection or a threaded connection.

[0063] The side wall of the sleeve connector 11 is provided with a locking hole 17 or a locking groove extending radially around the sleeve connector 11, and further includes a locking pin 19 provided on the outer shell 18. The locking pin 19 can be embedded in the locking hole 17 or the locking groove. The locking pin 19 can achieve a sleeve locking or prevent loosening during the threaded connection.

[0064] A lock hole 20 is formed on the outer shell 18, and a support spring seat 21 is provided inside the lock hole 20. The support spring seat 21 is an annular support with a smaller aperture than the lock hole 20, and the outer wall is fixedly connected to the inner wall of the lock hole 20. A tensioning spring seat 22 is provided near the end of the lock pin 19. The tensioning spring seat 22 is also an annular support seat, and its inner ring is fixedly connected to the lock pin 19. A spring 23 is provided between the support spring seat 21 and the tensioning spring seat 22. The spring 23 always tends to press the lock pin 19 downward through its own extension.

[0065] A spiral slope support platform 24 is provided on the outer shell 18, and a rotating support bar 25 is provided on the outer end of the locking pin 19. The rotating support bar 25 can be rotated to the slope support platform. By rotating the support bar 25 toward the spiral slope support platform 24, the distance between the bottom edge of the support bar and the support surface of the outer shell 18 is increased, thereby driving the locking pin 19 to disengage from the locking hole 17 or the locking groove for disassembly. After installation, it is only necessary to rotate the support bar 25 in the opposite direction to disengage it from the spiral slope support platform 24.

[0066] Example 3:

[0067] like Figure 8 As shown, a cryoprobe includes a tube body, a connecting end and a cryohead 26. The connecting end is arranged at the front end of the tube body, and the cryohead 26 is arranged at the end of the tube body.

[0068] The connecting end includes the aforementioned sleeve connector 11 and the terminal coupling, and also includes a rotating head 27. The central openings of the sleeve connector 11 and the rotating head 27 wrap around the tube body. The end of the sleeve connector 11 is used to connect to the cylindrical connector 9. The two sides of the front end are partially cut away to embed the rotating head 27. The center of the end of the rotating head 27 is expanded, and the expanded hole contour fits and connects with the front end of the sleeve connector 11. The outer side of the rotating head 27 is provided with a hand-held anti-slip groove;

[0069] The tube body includes the aforementioned outer tube 13 and the probe inner tube 12 which are nested and connected, and the outer wall of the outer tube 13 is provided with a heat insulation protection tube 28;

[0070] The end of the tube is provided with a connector 29, which is embedded in the front end of the tube and is hollow. The cryohead 26 is connected to the connector 29. The end of the probe inner tube 12 is connected to a high-pressure capillary 30, which leads to the connector 29. A porous support structure 31 is provided between the end of the outer tube 13 and the high-pressure capillary 30 to support the spatial position between the high-pressure capillary 30 and the outer tube 13.

[0071] like Figure 9 、 10 As shown, the freezing head 26 is made of a composite of metal and insulating non-metallic materials, wherein the middle portion is made of metal and the outer ring is made of non-metallic insulating material. During the cryosurgery, the front tip of the freezing head 26 usually contacts the diseased tissue to implement freezing and killing, and its outer edge portion can sometimes provide support to the surrounding tissue to form a treatment cavity, so it will contact non-lesional tissue. The design of the composite material can avoid damaging healthy tissue and achieve partitioned freezing.

[0072] The middle freezing area 32 and the outer edge support area 33 are nested and connected through an embedded platform to increase the connection stability;

[0073] like Figure 11As shown, the freezing head 26 includes a frame structure 34 made of a thermally insulating non-metallic material and also includes an embedded metal freezing area;

[0074] The frame structure 34 includes an outer structure, an isolation structure 35, and a connecting component. The outer structure is a hollow conical structure, and the isolation structure 35 is a cylindrical structure located in the middle of the outer structure. The two are connected at the bottom. Metal freezing materials are set inside and outside the isolation structure 35 as freezing zones, and the metal connectors 29 of the two are extended downward to the connection part of the freezing head 26. They are also arranged in zones, and the two metal connectors 29 are distributed on half of the side wall within 180°. By rotating the connection part, the metal connection seat is connected to one metal connector 29 on the connection part and the two metal connectors 29 are connected. This can change the size of the freezing area to adapt to the different areas of different lesion areas. The first metal connector 36 on the connection part in the figure is connected to the inner circle freezing zone 37, and the second metal connector 38 is connected to the outer circle freezing zone 39.

Claims

1. A connecting structure of a cryoprobe, comprising a connecting component (1), characterized in that: The connecting component (1) is a cylindrical body as a whole, and a central hole (2) is provided at the front end of the connecting component (1). At least one side hole (3) is provided around the central hole (2), parallel to the central hole (2) and not passing through the connecting component (1); A connecting hole (4) is provided at the end of the connecting component (1), the diameter of the connecting hole (4) is larger than that of the central hole (2), the central hole (2) passes through to the bottom of the connecting hole (4), and the connecting hole (4) does not overlap with the side hole (3); The side wall of the connecting component (1) near the end is provided with a radial hole (5) pointing towards the axis, and the radial hole (5) passes through the side hole (3) and the connecting hole (4).

2. A communication structure according to claim 1, characterized in that: Two side holes (3) are symmetrically provided, and the radial hole (5) simultaneously passes through the two side holes (3).

3. A communication structure according to claim 2, characterized in that: The connecting hole (4) is a three-step opening.

4. A communication structure according to claim 3, characterized in that: It also includes a connecting sleeve (8), the connecting sleeve (8) wraps a portion of the connecting component (1), and a cylindrical connecting seat (9) is provided at the end of the connecting sleeve (8), the central inner hole diameter of the cylindrical connecting seat (9) is greater than or equal to the outermost hole diameter of the connecting hole (4), and the inner wall of the connecting sleeve (8) covers the two end openings of the radial hole (5).

5. A communication structure according to claim 4, characterized in that: It also includes a terminal connecting tube of the freezing probe, the terminal connecting tube includes an inner tube and an outer tube (13) distributed in a staggered manner, wherein the inner tube is nested in the center of the outer tube (13), an air flow cavity exists between the outer tube (13) and the inner tube, the end of the inner tube extends out of the outer tube (13), and a support member (14) is provided on the inner wall of the outer tube (13) near the end, the support member (14) connects the inner wall of the outer tube (13) and the outer wall of the inner tube, and a plurality of through holes are provided around the support member (14); The terminal connecting pipe further comprises an elastic connecting piece (15) sleeved on the end of the inner pipe, the elastic connecting piece (15) having a central opening, the central opening connecting the inner pipe and the central hole (2) when the terminal connecting pipe is connected to the connecting component (1); The support member (14) is radially provided with a flow hole (16) in a portion between the end of the outer tube (13) and the elastic connecting member (15). The flow hole (16) is connected to the through hole and is connected to the connecting hole (4) and the radial hole (5).

6. A fastening structure for a cryoprobe, characterized in that: The end of the freezing probe is provided with a sleeve connector (11) which is connected to the cylindrical connector (9) according to claim 4 or 5, and the connection method is sleeve connection or threaded connection; The side wall of the sleeve connector (11) is provided with a locking hole (17) or a locking groove opened radially around it, and further includes a locking pin (19) provided on the outer shell (18), wherein the locking pin (19) can be embedded and connected with the locking hole (17) or the locking groove.

7. The fastening structure according to claim 6, wherein: A lock hole (20) is provided on the outer shell (18), a support spring seat (21) is provided inside the lock hole (20), a tensioning spring seat (22) is provided near the end of the lock pin (19), and a spring (23) is provided between the support spring seat (21) and the tensioning spring seat (22); A spiral slope support platform (24) is provided on the outer shell (18), and a rotation support bar (25) is provided on the outer end of the locking pin (19), and the rotation support bar (25) can be rotated onto the slope support platform.

8. A cryoprobe comprising a tube body, a connecting end and a cryohead (26), wherein the connecting end is arranged at the front end of the tube body, and the cryohead (26) is arranged at the end of the tube body, characterized in that: The connecting end includes the sleeve connector (11) and the terminal connecting pipe according to claim 6, and also includes a rotating head (27). The central openings of the sleeve connector (11) and the rotating head (27) wrap the tube body. The end of the sleeve connector (11) is used to connect to the cylindrical connecting seat (9). The two sides of the front end are partially cut off and embedded in the rotating head (27). The center of the end of the rotating head (27) is expanded, and the expanded hole contour is matched with the front end of the sleeve connector (11). The outer side of the rotating head (27) is provided with a hand-held anti-slip groove; The pipe body comprises an outer pipe (13) and an inner pipe as claimed in claim 5 which are nested and connected, and an outer wall of the outer pipe (13) is provided with a heat insulation protection pipe (28); A connector (29) is provided at the end of the tube body. The connector (29) is embedded in the front end of the tube body and is hollow. The freezing head (26) is connected to the connector (29).

9. A cryoprobe according to claim 8, characterized in that: The freezing head (26) is made of a composite of metal and heat-insulating non-metallic material.

10. The cryoprobe according to claim 9, wherein: The freezing head (26) includes a frame structure (34) made of a heat-insulating non-metallic material and an embedded metal freezing area; The frame structure (34) includes a peripheral structure, an isolation structure (35) and a connecting component. The peripheral structure is a hollow conical structure, and the isolation structure (35) is a cylindrical structure located in the middle of the peripheral structure. The two are connected at the bottom.

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