Bendable telescopic electric hook for thoracoscope

Abstract

The utility model discloses a flexible telescopic electric hook for a thoracoscope, which relates to the technical field of medical instruments and comprises an operating rod, a handheld part is mounted at one end of the operating rod, a hook head is mounted at the other end of the operating rod, a first conducting rod and a second conducting rod are mounted in the operating rod, and the first conducting rod and the second conducting rod are in spherical hinge joint. The hook head is connected with one end, away from the first conducting rod, of the second conducting rod, a locking piece for locking the relative angle of the first conducting rod and the second conducting rod is installed in the operating rod, and a hose is arranged on the operating rod corresponding to the hinged position of the first conducting rod and the second conducting rod; according to the electric hook provided by the utility model, the first conducting rod and the second conducting rod which are arranged in the operating rod are spherically hinged, so that the angle of the hook head can be conveniently adjusted, the operable operation range can be increased, the pressing ring is movably arranged on the ball seat on the second conducting rod, and the electric hook is convenient to operate by utilizing the friction force between the pressing ring and the ball head. The relative position of the ball seat and the ball head is limited, and locking of the second conducting rod after angle adjustment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and particularly discloses a flexible and retractable electric hook for a thoracoscope. Background Art

[0002] Lung cancer is currently the most common malignant tumor in the world, and its tumor mortality rate ranks first. With the promotion of CT screening technology, more and more early-stage lung cancers are being discovered, giving patients the opportunity to achieve radical resection through surgery and improve their survival prognosis. Among them, thoracoscopically assisted minimally invasive surgery has gradually become the mainstream technology for lung surgery due to its advantages such as small surgical incisions, less damage to ribs and muscles, fast recovery, and short hospitalization time. To achieve the safe and successful operation of thoracoscopic lung surgery, the electrocoagulation hook has become indispensable. However, human tissues are mostly three-dimensional structures. During surgery, the hook head angle of the electrocoagulation hook needs to be adjusted to adapt to the needs of actual surgical operations. It is extremely inconvenient to operate in the narrow puncture operating hole, and the scope of surgery involved is relatively small.

[0003] For example, the patent with announcement number CN205359617U, with announcement date of 2016-07-06, discloses a manually-controlled adjustable coagulation hook for minimally invasive surgery, including a coagulation hook head, a front section of the coagulation hook, a finger-holding hook portion, a coagulation hook head adjustment switch, a rear cable, a coagulation-electric cutting switch, a host connection connector and an adjustable angle joint portion; the coagulation hook head is connected to the front section of the coagulation hook through the adjustable angle joint portion and is bent 0°-90°, the front section of the coagulation hook is connected to the finger-holding hook portion, the coagulation hook head adjustment switch and the coagulation-electric cutting switch are embedded in the finger-holding hook portion, the coagulation-electric cutting switch includes an electric cutting switch and a coagulation switch, and the rear cable connects the finger-holding hook portion and the host connection connector.

[0004] The shortcoming of existing electrocoagulation hooks, including the above-mentioned patent, is that although the operating lever can be rotated to adjust the angle of the hook head, the use of an adjustable angle joint will cause the hook head to be unable to remain stable after the angle is adjusted. When subjected to force from human tissue, the angle will shift, causing the hook head to deviate from the expected trajectory. Utility Model Content

[0005] The utility model aims to provide a bendable and telescopic electric hook for thoracoscope which has high stability when bending.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A flexible and telescopic electric hook for a thoracoscope includes an operating rod, a handheld portion is installed at one end of the operating rod, a hook head is installed at the other end of the operating rod, a first conductive rod and a second conductive rod are installed inside the operating rod, the first conductive rod and the second conductive rod are ball-hinged, the hook head is connected to an end of the second conductive rod away from the first conductive rod, a locking member is installed inside the operating rod for locking the relative angle of the first conductive rod and the second conductive rod, and a hose is provided at the hinged portion of the operating rod corresponding to the first conductive rod and the second conductive rod.

[0008] The above-mentioned electric hook for thoracoscopy has one end of the first conductive rod extending to the inside of the handheld part, the other end of the first conductive rod is fixedly connected to a ball head, and the end of the second conductive rod corresponding to the ball head is fixedly connected to a ball seat, the ball head extends into the ball seat, and the locking part includes a pressure ring installed on the ball seat, which is driven to move along the axial direction of the second conductive rod and fit with the ball head to achieve locking of the angle of the second conductive rod and the first conductive rod.

[0009] The above-mentioned thoracoscope electric hook has spikes on the ball head in the area corresponding to the pressure ring, and the pressure ring is made of rubber.

[0010] The above-mentioned electric hook for thoracoscopy has a guide rod provided on the ball seat along the axial direction of the second conductive rod, one end of the guide rod is fixedly connected to a disc, the diameter of the disc is larger than the diameter of the guide rod, the other end of the guide rod is fixedly connected to the surface of the ball seat corresponding to the pressure ring, and a maintaining member is provided on the end of the operating rod corresponding to the handheld part, which pushes the guide rod to keep the pressure ring in contact with the ball head.

[0011] The above-mentioned electric hook for thoracoscopy has a first channel in the first conductive rod and a second channel in the second conductive rod. The second channel extends to the inner side of the ball seat. The first channel extends radially along the ball head and is connected to the second channel. A notch is provided on the ball head at a position corresponding to the second channel.

[0012] The above-mentioned electric hook for thoracoscopy, the maintaining part includes an adjustment sleeve slidably mounted on one end of the operating rod corresponding to the hand-held part, and an adjustment rod is provided at the position corresponding to the guide rod in the operating rod. The adjustment rods are arranged parallel to the first conductive rod, and one end of the adjustment rod corresponding to the adjustment sleeve passes through the radial direction of the operating rod to the outside of the operating rod and is connected to the inner wall of the adjustment sleeve. The adjustment rod is connected to the disc transmission through a connecting piece.

[0013] The above-mentioned electric hook for thoracoscopy, the connecting part includes an arc-shaped plate fixed to the end of the adjusting rod, an arc-shaped groove is opened in the arc-shaped plate, the side wall of the disc is fixed with a cylindrical pin along its own radial direction, the end of the cylindrical pin extends into the arc-shaped groove, and the cylindrical pin slides along the arc-shaped groove within the rotation range of the second conductive rod.

[0014] In the above-mentioned electric hook for thoracoscopy, a spring is sleeved on the area between the adjustment sleeve and the hand-held portion of the operating rod, and the outer wall of the operating rod and the inner wall of the adjustment sleeve are both smooth.

[0015] In the above-mentioned electric hook for thoracoscopy, a groove is formed on the inner wall of the ball seat corresponding to the area on the ball head where the spikes are provided. Within the rotation range of the second conductive rod, the area on the ball head where the spikes are provided always corresponds to the groove.

[0016] In the above-mentioned electric hook for thoracoscopy, the second conductive rod is a telescopic structure, and the position of the operating rod corresponding to the second conductive rod is a bellows.

[0017] In the above technical solution, the flexible and telescopic electric hook for thoracoscope provided by the utility model hinges the first conductive rod and the second conductive rod ball arranged in the operating rod to facilitate adjustment of the angle of the hook head, thereby increasing the operable surgical range. By movably installing a pressure ring on the ball seat on the second conductive rod, the pressure ring can contact the ball head at the end of the first conductive rod during the axial movement of the second conductive rod. The friction between the pressure ring and the ball head is used to limit the relative position of the ball seat and the ball head, thereby achieving locking of the second conductive rod after angle adjustment, improving the stability of the hook head during surgery, and facilitating the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic structural diagram of an electric hook for thoracoscopy provided in an embodiment of the utility model;

[0020] Figure 2 A partial cross-sectional view of an electric hook for thoracoscopy provided in an embodiment of the utility model;

[0021] Figure 3 The embodiment of the present invention provides Figure 2 A in the middle is an enlarged schematic diagram;

[0022] Figure 4 The embodiment of the present invention provides Figure 2 The enlarged schematic diagram of point B in the middle;

[0023] Figure 5 An exploded view of a first conductive rod and a second conductive rod provided in an embodiment of the present utility model;

[0024] Figure 6 An enlarged schematic diagram of a second conductive rod provided in an embodiment of the present utility model;

[0025] Figure 7 A schematic diagram of the matching state of the arc plate and the cylindrical pin provided in an embodiment of the utility model;

[0026] Figure 8 The embodiment of the present invention provides Figure 3 Enlarged schematic diagram at point C in the middle.

[0027] Description of reference numerals:

[0028] 1. Operating lever; 11. Hose; 12. Bellows; 2. Handle; 3. Hook; 4. First conductive rod; 41. Ball head; 411. Notch; 42. First channel; 5. Second conductive rod; 51. Ball seat; 511. Guide rod; 512. Disc; 513. Cylindrical pin; 514. Groove; 52. Pressing ring; 53. Second channel; 6. Maintaining part; 61. Adjusting sleeve; 62. Adjusting rod; 63. Arc plate; 631. Arc groove; 64. Spring. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figures 1-8 As shown, an embodiment of the utility model provides a flexible and telescopic electric hook for a thoracoscope, including an operating rod 1, a hand-held part 2 is installed at one end of the operating rod 1, a hook head 3 is installed at the other end of the operating rod 1, a first conductive rod 4 and a second conductive rod 5 are installed inside the operating rod 1, the first conductive rod 4 and the second conductive rod 5 are ball-hinged, the hook head 3 is connected to the end of the second conductive rod 5 away from the first conductive rod 4, a locking member for locking the relative angles of the first conductive rod 4 and the second conductive rod 5 is installed in the operating rod 1, and a hose 11 is provided at the hinged portion of the operating rod 1 corresponding to the first conductive rod 4 and the second conductive rod 5.

[0032] Furthermore, one end of the first conductive rod 4 extends to the interior of the hand-held part 2, and the other end of the first conductive rod 4 is fixedly connected to a ball head 41. The end of the second conductive rod 5 corresponding to the ball head 41 is fixedly connected to a ball seat 51, and the ball head 41 extends into the ball seat 51. The locking part includes a pressure ring 52 installed on the ball seat 51. The pressure ring 52 is driven to move along the axial direction of the second conductive rod 5 and fits with the ball head 41 to achieve locking of the angle of the second conductive rod 5 and the first conductive rod 4.

[0033] Preferably, the area on the ball head 41 corresponding to the pressure ring 52 is provided with spikes, and the pressure ring 52 is made of rubber.

[0034] Optionally, a guide rod 511 is provided on the ball seat 51 along the axial direction of the second conductive rod 5, and a disc 512 is fixedly connected to one end of the guide rod 511. The diameter of the disc 512 is larger than the diameter of the guide rod 511. The other end of the guide rod 511 is fixedly connected to the surface of the ball seat 51 corresponding to the pressure ring 52. A maintaining member 6 is provided on the end of the operating rod 1 corresponding to the hand-held part 2, and the maintaining member 6 pushes the guide rod 511 to keep the pressure ring 52 in contact with the ball head 41.

[0035] The handle 2 and the hook head 3 are respectively mounted at both ends of the operating rod 1. The operating rod 1 is an insulating rod body, and a first conductive rod 4 and a second conductive rod 5 are arranged inside it. The materials of the first conductive rod 4 and the second conductive rod 5 are both conductive materials, preferably copper rods. The wire is connected to the inside of the handle 2. The first conductive rod 4 is connected to the inside of the handle 2 and is connected to the wire. The handle 2 is provided with a button for connecting the first conductive rod 4 and the wire circuit. The diameter of the handle 2 is larger than the diameter of the first conductive rod 4, which is convenient for holding and can be used to connect the wire and the button. The handle 2 is a prior art and can be directly applied without further explanation. The second conductive rod 5 maintains a rotational connection with the first conductive rod 4 through a ball hinge relationship. While connecting the circuit to the hook head 3, in order to facilitate the rotation of the second conductive rod 5, a hose 11 is provided on the operating rod 1 corresponding to the hinge position of the first conductive rod 4 and the second conductive rod 5. Figure 3 As shown, a ball head 41 is fixedly connected to one end of the first conductive rod 4 corresponding to the second conductive rod 5, and a ball seat 51 is fixedly connected to one end of the second conductive rod 5 corresponding to the ball head 41. The ball head 41 extends into the interior of the ball seat 51 to achieve a ball-hinged connection between the first conductive rod 4 and the second conductive rod 5. On the other hand, in order to ensure that the second conductive rod 5 can stably maintain the angle after rotation, a locking member is further installed in the operating rod 1. The locking member is driven to lock the second conductive rod 5 to the first conductive rod 4, so as to prevent the second conductive rod 5 from being offset in angle due to resistance from human tissue during surgery, thereby ensuring that the movement trajectory of the hook head 3 is not affected, so as to stably achieve the purpose of cutting or hemostasis.

[0036] The locking member includes a pressure ring 52 mounted on a ball seat 51, such as Figure 3 As shown, the ball seat 51 is along the axial direction of the second conductive rod 5, that is, Figure 3 A guide rod 511 is provided through the horizontal direction in the view, the ball seat 51 is hemispherical, the radius of its internal cavity is equal to the radius of the ball head 41, the pressure ring 52 is a part of the hollow sphere, and the inner diameter and outer diameter of the contact surface of the pressure ring 52 and the ball seat 51 are equal. One end of the guide rod 511 is connected to the contact surface of the pressure ring 52 and the ball seat 51, and the friction force at the contact position of the pressure ring 52 and the ball head 41 is used to limit the rotation of the ball seat 51 on the ball head 41, thereby achieving the locking of the relative angles of the first conductive rod 4 and the second conductive rod 5; in order to further improve the locking effect of the second conductive rod 5, preferably, the pressure ring 52 is made of rubber, and the area on the ball head 41 corresponding to the pressure ring 52 is also Figure 3 In the view, spikes are provided on the upper and lower parts of the ball head 41. Within the rotation range of the ball seat 51 relative to the ball head 41, part of the spikes in the area on the ball head 41 can always be in contact with the pressure ring 52. In this way, when the pressure ring 52 is driven to contact the ball seat 51, part of the spikes can penetrate from the inner wall of the pressure ring 52, thereby enhancing the position limiting effect of the pressure ring 52 on both the ball seat 51 and the ball head 41. When the pressure ring 52 is driven away from the ball seat 51, the spikes on the ball head 41 no longer contact the inner wall of the pressure ring 52. At this time, the ball seat 51 can rotate outside the ball head 41, thereby facilitating the adjustment of the angle of the second conductive rod 5.

[0037] The flexible and telescopic electric hook for thoracoscope provided by the embodiment of the present invention has a first conductive rod 4 and a second conductive rod 5 arranged in the operating rod 1, which are ball-hinged to facilitate adjustment of the angle of the hook head 3, thereby increasing the operable surgical range. A pressure ring 52 is movably installed on the ball seat 51 on the second conductive rod 5. During the axial movement of the pressure ring 52 along the second conductive rod 5, it can contact the ball head 41 at the end of the first conductive rod 4. The friction between the pressure ring 52 and the ball head 41 is used to limit the relative position of the ball seat 51 and the ball head 41, thereby achieving locking of the second conductive rod 5 after the angle is adjusted, improving the stability of the hook head 3 during the operation, and facilitating the operation.

[0038] In another embodiment of the present invention, a first channel 42 is defined in the first conductive rod 4, and a second channel 53 is defined in the second conductive rod 5. The second channel 53 extends to the inner side of the ball seat 51. The first channel 42 extends radially through the ball head 41 and communicates with the second channel 53. A notch 411 is defined on the ball head 41 at a position corresponding to the second channel 53. Within the rotational range of the second conductive rod 5, the first channel 42 remains connected to the second channel 53.

[0039] Specifically, when the electric hook is cutting or stopping bleeding on human tissue, when the current passes through the tissue, the moisture in the tissue is heated to the evaporation point, and the protein and other organic matter decompose, forming a visible mixture of steam and particles, namely surgical smoke. The surgical smoke contains cell fragments, fat, carbonized particles, bacteria, viruses, etc., which pose a risk to the patient's health. In addition, the formation of surgical smoke will obstruct the surgical field of view, affecting the accuracy and efficiency of the operation. To avoid these problems, the existing electric hook usually provides a smoke pipe inside the operating rod 1 and extracts the surgical smoke through an external extraction device. However, when the first conductive rod 4 and the second conductive rod 5 are adjusted in angle, the operating rod 1 will bend, causing the smoke pipe to be bent, affecting the extraction of surgical smoke. In this embodiment, a first channel 42 is opened along the axial direction of the first conductive rod 4, and a second channel 53 is opened along the axial direction of the second conductive rod 5. The second channel 53 is passed through the inner side of the ball seat 51, and the first channel 42 passes through the ball head 41 to communicate with the second channel 53. A notch 411 is opened on the ball head 41, as shown in FIG. Figure 5 As shown, during the rotation of the second conductive rod 5 , the opening of the notch 411 can keep the first channel 42 and the second channel 53 connected, thereby ensuring the smooth extraction of surgical smoke.

[0040] Furthermore, the maintaining member 6 includes an adjusting sleeve 61 slidably mounted on one end of the operating rod 1 corresponding to the hand-held portion 2, and an adjusting rod 62 is provided at the position corresponding to the guide rod 511 in the operating rod 1. The adjusting rod 62 is arranged parallel to the first conductive rod 4, and one end of the adjusting rod 62 corresponding to the adjusting sleeve 61 passes through the radial direction of the operating rod 1 to the outside of the operating rod 1 and is connected to the inner wall of the adjusting sleeve 61. The adjusting rod 62 is transmission-connected to the disc 512 through a connecting member. During the rotation stroke of the second conductive rod 5, the connecting member maintains the transmission connection between the adjusting rod 62 and the disc 512.

[0041] Specifically, in order to facilitate the adjustment of the pressure ring 52, in this embodiment, the maintaining member 6 includes an adjusting sleeve 61 slidably mounted on the end of the operating rod 1 corresponding to the hand-held portion 2, and an adjusting rod 62 is provided at the position corresponding to the guide rod 511 in the operating rod 1. The adjusting rod 62 is arranged on the outside of the first conductive rod 4 and is arranged parallel to the first conductive rod 4. A connecting member is provided at the position of the disc 512 on the guide rod 511 of the adjusting rod 62. Within the rotation stroke of the second conductive rod 5, the connecting member maintains the transmission connection between the adjusting rod 62 and the disc 512, that is, when the second conductive rod 5 is at any angle within the rotation stroke, the guide rod 511 can be displaced by moving the adjusting sleeve 61 through the adjusting rod 62, so that the pressure ring 52 contacts the ball head 41 to achieve locking of the ball head 41 and the ball seat 51.

[0042] Preferably, the connecting member includes an arc-shaped plate 63 fixed to the end of the adjusting rod 62, an arc-shaped groove 631 is provided in the arc-shaped plate 63, a cylindrical pin 513 is fixed to the side wall of the disc 512 along its own radial direction, and the end of the cylindrical pin 513 extends into the arc-shaped groove 631. Within the rotation range of the second conductive rod 5, the cylindrical pin 513 slides along the arc-shaped groove 631.

[0043] Specifically, in the above embodiment, since the first conductive rod 4 and the second conductive rod 5 are spherically hinged by the cooperation of the ball head 41 and the ball seat 51, the second conductive rod 5 will not rotate about a single axis when rotating. When the first channel 42 and the second channel 53 are kept connected at all angles within the rotation range of the second conductive rod 5, the notch 411 on the ball head 41 needs to be large enough. This will cause the surface contact area between the inner wall of the ball seat 51 and the ball head 41 to become smaller, thereby reducing the electrical connection effect between the first conductive rod 4 and the second conductive rod 5. In this embodiment, the connecting member includes an arc-shaped plate 63 fixed to the end of the adjusting rod 62, and an arc groove 631 is provided in the arc-shaped plate 63. The side walls of the disk 512 are fixed with cylindrical pins 513 along their own radial direction, and the ends of the cylindrical pins 513 extend to The arc groove 631 is configured in this way. The arc groove 631 restricts the cylindrical pin 513 so that the second conductive rod 5 can only rotate about a single axis. At the same time, it can also ensure that within the rotation range of the second conductive rod 5, the cylindrical pin 513 is always in the arc groove 631, so that when the adjusting rod 62 moves under the drive of the adjusting sleeve 61, the cylindrical pin 513 and the arc groove 631 can cooperate to pull the guide rod 511 to move, thereby achieving adjustment of the position of the pressure ring 52. In this embodiment, the position of the adjusting sleeve 61 can be limited by the static friction between the operating rod 1 and the adjusting sleeve 61, that is, the adjusting sleeve 61 cannot slide outside the operating rod 1 when it is not subjected to external force or is subjected to a small external force, thereby keeping the pressure ring 52 in contact with the ball head 41, thereby locking the ball head 41 and the ball seat 51.

[0044] Furthermore, a spring 64 is sleeved on the area of ​​the operating rod 1 between the adjustment sleeve 61 and the hand-held portion 2 , and the outer wall of the operating rod 1 and the inner wall of the adjustment sleeve 61 are both smooth.

[0045] Specifically, in the above embodiment, the position of the adjusting sleeve 61 after position adjustment is maintained unchanged by the friction between the operating rod 1 and the adjusting sleeve 61. With such a configuration, as the number of times the adjusting sleeve 61 is adjusted increases, the contact surface between the adjusting sleeve 61 and the operating rod 1 becomes smooth due to friction, thereby causing the static friction between the adjusting sleeve 61 and the operating rod 1 to gradually decrease, making it difficult to achieve position limitation of the pressure ring 52. In this embodiment, a portion of the outside of the operating rod 1 between the adjusting sleeve 61 and the hand-held portion 2 is sheathed with a spring 64, and the two ends of the spring 64 respectively abut against the adjusting sleeve 61 and the hand-held portion 2. The spring 64 pushes the adjusting sleeve 61 to keep the adjusting sleeve 61 at the end close to the hook head 3 in its sliding stroke, thereby keeping the pressure ring 52 in contact with the ball head 41.

[0046] Furthermore, a groove 514 is provided on the inner wall of the ball seat 51 corresponding to the area on the ball head 41 where the spikes are provided. Within the rotation range of the second conductive rod 5, the area on the ball head 41 where the spikes are provided always corresponds to the groove 514. With this arrangement, during the rotation of the second conductive rod 5, the spikes on the ball head 41 will not contact the inner wall of the ball seat 51, thereby preventing the spikes from being rubbed and becoming ineffective.

[0047] In another embodiment of the present invention, the second conductive rods 5 are all telescopic structures, and the position of the operating rod 1 corresponding to the second conductive rod 5 is the bellows 12 .

[0048] Specifically, during the operation, the length of the operating rod 1 needs to be adjusted according to the patient's body shape and the operation position so that the hook head 3 can contact the operation position. In this embodiment, the second conductive rod 5 is a telescopic structure. Figure 6 As shown, it is formed by socketing two hollow tubes of different diameters. This is a prior art and will not be described in detail. The area on the operating rod 1 corresponding to the second conductive rod 5 is set as a bellows 12. Preferably, the setting area of ​​the bellows 12 corresponds to the socket position of the two rods to facilitate adaptation to the extension and contraction of the second conductive rod 5.

[0049] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flexible and retractable electric hook for thoracoscope, comprising an operating rod, a handle mounted on one end of the operating rod, and a hook head mounted on the other end of the operating rod, characterized in that: A first conductive rod and a second conductive rod are installed inside the operating rod. The first conductive rod and the second conductive rod are ball-hinged. The hook head is connected to the end of the second conductive rod away from the first conductive rod. A locking member for locking the relative angle of the first conductive rod and the second conductive rod is installed inside the operating rod. The hinged part of the operating rod corresponding to the first conductive rod and the second conductive rod is a hose.

2. The flexible and retractable electric hook for thoracoscopy according to claim 1, characterized in that: One end of the first conductive rod extends to the interior of the handheld part, and the other end of the first conductive rod is fixedly connected to a ball head. The end of the second conductive rod corresponding to the ball head is fixedly connected to a ball seat, and the ball head extends into the ball seat. The locking part includes a pressure ring installed on the ball seat. The pressure ring is driven to move along the axial direction of the second conductive rod and fits with the ball head to lock the angle of the second conductive rod and the first conductive rod.

3. The flexible and retractable electric hook for thoracoscopy according to claim 2, characterized in that: The area on the ball head corresponding to the pressure ring is provided with spikes, and the pressure ring is made of rubber.

4. A flexible and retractable electric hook for thoracoscopy according to claim 2 or 3, characterized in that: A guide rod is provided on the ball seat along the axial direction of the second conductive rod, and a disc is fixedly connected to one end of the guide rod. The diameter of the disc is larger than the diameter of the guide rod. The other end of the guide rod is fixedly connected to the surface of the ball seat corresponding to the pressure ring. A maintaining part is provided on the end of the operating rod corresponding to the hand-held part, and the maintaining part pushes the guide rod to keep the pressure ring in contact with the ball head.

5. The flexible and retractable electric hook for thoracoscopy according to claim 4, characterized in that: A first channel is opened in the first conductive rod, a second channel is opened in the second conductive rod, the second channel passes through the inner side of the ball seat, the first channel passes through the radial direction of the ball head and is connected to the second channel, and a slot is opened on the ball head at a position corresponding to the second channel.

6. The flexible and retractable electric hook for thoracoscopy according to claim 4, characterized in that: The maintaining member includes an adjusting sleeve slidably mounted on one end of the operating rod corresponding to the hand-held part. An adjusting rod is provided at the position corresponding to the guide rod in the operating rod. The adjusting rod is arranged parallel to the first conductive rod, and one end of the adjusting rod corresponding to the adjusting sleeve passes through the radial direction of the operating rod to the outside of the operating rod and is connected to the inner wall of the adjusting sleeve. The adjusting rod is connected to the disc transmission through a connecting member.

7. The flexible and retractable electric hook for thoracoscopy according to claim 6, characterized in that: The connecting part includes an arc-shaped plate fixed to the end of the adjusting rod, an arc-shaped groove is opened in the arc-shaped plate, a cylindrical pin is fixed to the side wall of the disc along its own radial direction, and the end of the cylindrical pin extends into the arc-shaped groove. Within the rotation range of the second conductive rod, the cylindrical pin slides along the arc-shaped groove.

8. The flexible and retractable electric hook for thoracoscopy according to claim 6, characterized in that: A spring is sleeved on the area between the adjustment sleeve and the hand-held part of the operating rod, and the outer wall of the operating rod and the inner wall of the adjustment sleeve are both smooth.

9. The flexible and retractable electric hook for thoracoscopy according to claim 3, characterized in that: A groove is provided on the inner wall of the ball seat corresponding to the area on the ball head where the spikes are provided. Within the rotation range of the second conductive rod, the area on the ball head where the spikes are provided always corresponds to the groove.

10. The flexible and retractable electric hook for thoracoscopy according to claim 1, characterized in that: The second conductive rods are all telescopic structures, and the position of the operating rod corresponding to the second conductive rod is a bellows.

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