Laparoscope

Abstract

The invention relates to the technical field of medical instruments, and discloses a laparoscope which comprises an outer housing, a mounting seat is movably mounted at the position, close to the middle, of an inner cavity of the outer housing, a gasket is fixedly mounted at the position, close to the center, of the front end of the mounting seat, and the gasket is connected with a first reset spring in a clamped mode; matching deep holes are formed in the positions, located on the two sides of the gasket, of the front end of the installation base, and the stroke stopping telescopic rod is matched with the matching deep holes. The traction rope continues to drag the connecting shell and drive the outer cover shell to move, so that the mounting base is separated from the interior of the outer cover shell, and at the moment, the outer cover shell continues to move in the direction close to the winding wheel and rotates in the direction of the outer cover shell under the guiding action of a sliding block and a guiding spiral groove; when the outer housing rotates, the mounting seat is driven to rotate synchronously, so that the orientations of the ultrasonic transmitter and the ultrasonic receiver are changed, and medical personnel do not need to adjust the posture of the winding wheel when adjusting the ultrasonic direction.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a laparoscope. Background Art

[0002] A laparoscope is a very important medical device that can be inserted into the abdominal cavity through a minimally invasive opening in the patient's abdomen, and use the camera at the front to observe the lesions inside the patient's abdominal cavity, thereby facilitating medical personnel to evaluate and characterize the patient's disease type, and then quickly come up with a treatment plan and shorten the time required for recovery. However, existing laparoscopes are only suitable for use with cameras and are still unable to fully observe the internal conditions of the abdominal cavity. Some lesions may have only a small portion exposed to the outside, while most of them are buried in the tissue and difficult to be observed by the camera. This makes it impossible for medical personnel to obtain the patient's specific condition through the camera at the front end of the laparoscope. In response to this, the present application document proposes a laparoscope that aims to solve the above-mentioned problems. Summary of the invention

[0003] The present application proposes a laparoscope, which has the advantage of being able to change the direction of ultrasound waves without moving the probe, thereby eliminating the harm and discomfort caused to the patient by moving the probe.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a laparoscope, comprising a main shell, a handle fixedly installed at the end of the main shell, an operating handle arranged on the top of the main shell, a winding wheel arranged on the inner movable sleeve of the operating handle, and the winding wheel is connected to the operating handle, a connecting device is arranged on the front fixed sleeve of the main shell, a camera is arranged on the front fixed sleeve of the connecting device, a stop device is fixedly installed on the inner cavity of the connecting device near the front end, a detection device is fixedly installed on the inner cavity of the connecting device near the terminal, and a limiting device is fixedly installed on the inner cavity of the connecting device near the end.

[0005] Furthermore, the connecting device includes a front end sleeve, the camera is fixed to the front end of the front end sleeve by means of bolt connection, a guide straight groove is provided on the inner wall of the front end sleeve, the camera cooperates with the guide straight groove, a connecting piece is fixedly installed on the outer surface of the front end sleeve near the end, a connecting groove is provided on the inner side of the connecting piece, a rear end sleeve is fixedly installed on one end of the connecting groove, and a guide spiral groove is provided on the inner wall of the rear end sleeve.

[0006] Specifically, the number of the guide straight grooves, the connecting grooves and the guide spiral grooves are four each, and they are distributed in a circular array. The guide straight grooves, the connecting grooves and the guide spiral grooves constitute a continuous track, and the camera moves along the slide rail under the action of traction.

[0007] Specifically, the guide spiral groove is spiral-shaped, and the spiral angle is 180 degrees. When the camera is in a state of matching with the guide spiral groove, the camera will rotate along its own axis during the sliding process.

[0008] Furthermore, the stop device includes a connecting top plate, both ends of the connecting top plate are fixedly connected to the inner wall of the front end sleeve, a rotating seat is movably provided on the center position of the top of the connecting top plate, a rotating plate is fixedly installed on one end of the rotating seat, and a stop telescopic rod is fixedly installed on one side of the rotating plate near the two ends. When the detection device is displaced, the telescopic amount of the stop telescopic rod will also change synchronously.

[0009] Specifically, the stop telescopic rod cooperates with the detection device, a first return spring is clamped at a center position on one side of the rotating plate, one end of the first return spring is connected to the detection device, and the first return spring is in a stretched state in the initial state.

[0010] Furthermore, the detection device includes an outer cover shell, and a slider is fixedly installed on the outer surface of the outer cover shell near the front end. The number of the sliders is four and they are distributed in a circular array. The slider cooperates with the guide straight groove, the connecting groove and the guide spiral groove to form a continuous track. When the detection device is displaced under the action of traction force, the detection device is limited.

[0011] Specifically, a synchronous telescopic rod is fixedly installed at the bottom of the inner cavity of the outer cover shell, and a second return spring is clamped at a position on the outside of the synchronous telescopic rod at the bottom of the inner cavity of the outer cover shell. A mounting seat is movably installed at a position near the middle of the inner cavity of the outer cover shell, and an ultrasonic transmitter and an ultrasonic receiver are provided on the top and bottom surfaces of the mounting seat. A gasket is fixedly installed at a position near the center of the front end of the mounting seat, and the gasket is clamped with the first return spring. Matching deep holes are provided at positions on both sides of the gasket at the front end of the mounting seat, and the stop telescopic rod cooperates with the matching deep holes. A connecting seat is fixedly installed above and below the inner wall of the outer cover shell, and a brush is fixedly installed at one end of the connecting seat, and the brush is in contact with the ultrasonic transmitter and the ultrasonic receiver. Under the cyclic action of the mounting seat detaching from the outer cover shell and resetting, the brush can clean the body fluids attached to the surfaces of the ultrasonic transmitter and the ultrasonic receiver.

[0012] Specifically, a hexagonal synchronization hole is opened at a position close to the center of the end of the mounting seat, and the hexagonal synchronization hole cooperates with the synchronous telescopic rod. The cross section of the synchronous telescopic rod is hexagonal, and when the outer cover shell rotates, it will drive the mounting seat to rotate synchronously.

[0013] Furthermore, the ultrasonic transmitters and the ultrasonic receivers are distributed in a rectangular array, and the ultrasonic transmitters and the ultrasonic receivers are distributed in a staggered manner.

[0014] Furthermore, the limiting device includes a connecting shell, and the front end of the connecting shell is connected to the end of the outer cover shell.

[0015] Specifically, a traction rope is fixedly connected to the end of the connecting shell, one end of the traction rope is connected to the winding wheel, a strip hole is opened on the outer surface of the connecting shell near the front end, the number of the strip holes is four and they are distributed in a circular array, a mounting slot is fixedly installed on the inner wall of the connecting shell behind the strip hole, a limit touch plate is fixedly installed inside the mounting slot, a limit seat is fixedly installed at the front end of the limit touch plate, and the limit seat extends from the inside of the strip hole.

[0016] Furthermore, the limiting seat is connected to the end of the front sleeve in an initial state, thereby playing a limiting role.

[0017] This application has the following beneficial effects.

[0018] The device uses a detection method that combines a camera with ultrasound, which can better carry out detailed inspection of lesions buried in tissues, and uses ultrasonic transmitters and ultrasonic receivers that are arranged in arrays and staggered manner, which can simultaneously obtain multiple sets of data information, thereby improving the accuracy of the results obtained by ultrasonic detection, and can also play a role in that when the ultrasound waves emitted by some ultrasonic transmitters are blocked by the connecting parts, the ultrasound waves emitted by other unblocked ultrasonic transmitters can still work normally. When the outer cover shell rotates, it will drive the mounting base to rotate synchronously, thereby changing the direction of the ultrasonic transmitter and the ultrasonic receiver, so that medical personnel do not need to adjust the posture of the winding wheel when adjusting the direction of the ultrasound, avoiding the problem of discomfort caused by the displacement of the connecting device in the patient's body, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0020] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which: Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a cross-sectional view of the structure of the present invention; Figure 3 This is a diagram of the structural connection device of the present invention; Figure 4 It is a cross-sectional view of the structural connection device of the present invention; Figure 5 This is a schematic diagram of the front end sleeve of the structure of the present invention; Figure 6 It is a schematic diagram of the structural connecting member of the present invention; Figure 7 It is a cross-sectional view of the structural stop device of the present invention; Figure 8 This is a diagram of the structural stop device of the present invention; Fig. 9 This is a diagram of the structural detection device of the present invention; Fig.10 It is a front view of the structure detection device of the present invention; Fig.11 The structure of the present invention Fig.10 Sectional view in the middle AA direction; Fig.12 The structure of the present invention Fig.10 Cross-section in the middle BB direction; Fig.13 This is a main diagram of the structure detection device of the present invention; Fig.14 This is a diagram of the structural limiting device of the present invention; Fig.15 It is a cross-sectional view of the structural limiting device of the present invention; Fig.16 This is a schematic diagram of the card slot installation structure of the present invention.

[0021] In the figure; 1. main body shell; 2. grip; 3. operating handle; 4. winding wheel; 5. connecting device; 51. front sleeve; 52. guide straight groove; 53. connecting piece; 54. connecting groove; 55. rear sleeve; 56. guide spiral groove; 6. camera; 7. stop device; 71. connecting top plate; 72. rotating seat; 73. rotating plate; 74. stop telescopic rod; 75. first return spring; 8. detection device; 81. outer cover shell; 82. slider; 83. synchronous telescopic rod; 84. second return spring; 85. mounting seat; 86. ultrasonic transmitter; 87. ultrasonic receiver; 88. gasket; 89. matching deep hole; 801. connecting seat; 802. brush; 803. hexagonal synchronous hole; 9. limit device; 91. connecting shell; 92. traction rope; 93. strip hole; 94. mounting card slot; 95. limit touch plate; 96. limit seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] A laparoscope, see Figure 1-Figure 2 , including a main shell 1, a handle 2 is fixedly installed at the end of the main shell 1, an operating handle 3 is arranged on the top of the main shell 1, a winding wheel 4 is arranged in the inner movable sleeve of the operating handle 3, and the winding wheel 4 is connected to the operating handle 3, a connecting device 5 is arranged in the front fixed sleeve of the main shell 1, a camera 6 is arranged in the front fixed sleeve of the connecting device 5, a stop device 7 is fixedly installed at the position of the inner cavity of the connecting device 5 near the front end, a detection device 8 is fixedly installed at the position of the inner cavity of the connecting device 5 near the terminal, and a limiting device 9 is fixedly installed at the position of the inner cavity of the connecting device 5 near the end.

[0024] While the device uses the camera 6 to examine the patient, it can also use the ultrasound generated by the detection device 8 to examine the lesions buried in the tissue, avoiding the problem that the camera 6 can only examine the surface lesions but cannot see the lesions buried in the tissue, thereby improving the practicality of the device.

[0025] See also Figure 2-Figure 6 The connecting device 5 includes a front end sleeve 51, and the camera 6 is fixed to the front end of the front end sleeve 51 by bolt connection. A guide straight groove 52 is provided on the inner wall of the front end sleeve 51, and the camera 6 cooperates with the guide straight groove 52. A connecting piece 53 is fixedly installed on the outer surface of the front end sleeve 51 near the end, and a connecting groove 54 is provided on the inner side of the connecting piece 53. A rear end sleeve 55 is fixedly installed at one end of the connecting groove 54, and a guide spiral groove 56 is provided on the inner wall of the rear end sleeve 55.

[0026] See also Figure 2-Figure 6 The number of the guide straight groove 52, the connecting groove 54 and the guide spiral groove 56 are all four, and they are distributed in a circular array. The guide straight groove 52, the connecting groove 54 and the guide spiral groove 56 constitute a continuous track, and the camera 6 moves along the slide rail under the action of traction.

[0027] See also Figure 2-Figure 6 The guide spiral groove 56 is spiral-shaped, and the spiral angle is 180 degrees. When the camera 6 is in a state of matching with the guide spiral groove 56, the camera 6 will rotate along its own axis during the sliding process.

[0028] See also Figure 2 and Figure 7-Figure 8 The stop device 7 includes a connecting top plate 71, both ends of the connecting top plate 71 are fixedly connected to the inner wall of the front end sleeve 51, a rotating seat 72 is movably sleeved on the top center position of the connecting top plate 71, a rotating plate 73 is fixedly installed on one end of the rotating seat 72, and a stop telescopic rod 74 is fixedly installed on one side of the rotating plate 73 near the two ends. When the detection device 8 is displaced, the telescopic amount of the stop telescopic rod 74 will also change synchronously.

[0029] See also Figure 2 and Figure 7-Figure 8 The stop telescopic rod 74 cooperates with the detection device 8, and a first return spring 75 is clamped at the center position on one side of the rotating plate 73. One end of the first return spring 75 is connected to the detection device 8. The first return spring 75 is in a stretched state in the initial state.

[0030] See also Figure 3-Figure 6 and Figure 9-12 The detection device 8 includes an outer cover shell 81, and a slider 82 is fixedly installed on the outer surface of the outer cover shell 81 near the front end. The number of the sliders 82 is four and they are distributed in a circular array. The sliders 82 cooperate with the guide straight grooves 52, the connecting grooves 54 and the guide spiral grooves 56 to form a continuous track. When the detection device 8 is displaced under the action of traction, it plays a role in limiting the detection device 8.

[0031] A synchronous telescopic rod 83 is fixedly installed at the bottom of the inner cavity of the outer cover shell 81, and a second return spring 84 is clamped at a position outside the synchronous telescopic rod 83 at the bottom of the inner cavity of the outer cover shell 81. A mounting seat 85 is movably installed near the middle of the inner cavity of the outer cover shell 81. The top and bottom surfaces of the mounting seat 85 are both provided with an ultrasonic transmitter 86 and an ultrasonic receiver 87. A gasket 88 is fixedly installed at a position near the center of the front end of the mounting seat 85. The gasket 88 is clamped with the first return spring 75. The front end of the mounting seat 85 is located at the gasket Matching deep holes 89 are provided on both sides of the sheet 88, and the stop telescopic rod 74 matches with the matching deep holes 89. Connecting seats 801 are fixedly installed above and below the inner wall of the outer cover shell 81, and a brush 802 is fixedly installed at one end of the connecting seat 801. The brush 802 is in contact with the ultrasonic transmitter 86 and the ultrasonic receiver 87. In the cyclic action of the mounting seat 85 being detached from and reset to the outer cover shell 81, the brush 802 can clean the body fluids attached to the surface of the ultrasonic transmitter 86 and the ultrasonic receiver 87.

[0032] See also Figure 11-Figure 12 A hexagonal synchronization hole 803 is provided at the end of the mounting seat 85 near the center. The hexagonal synchronization hole 803 cooperates with the synchronous telescopic rod 83. The cross section of the synchronous telescopic rod 83 is hexagonal. When the outer cover shell 81 rotates, the mounting seat 85 will be driven to rotate synchronously.

[0033] See also Fig.13 The ultrasonic transmitter 86 and the ultrasonic receiver 87 are distributed in a rectangular array, and the ultrasonic transmitter 86 and the ultrasonic receiver 87 are distributed in an interlaced manner.

[0034] The device adopts ultrasonic transmitters 86 and ultrasonic receivers 87 which are arranged in an array and staggered manner. By having multiple groups of ultrasonic transmitters 86 and ultrasonic receivers 87 working simultaneously, multiple groups of data information can be obtained at the same time, thereby improving the accuracy of the results obtained by ultrasonic detection, avoiding the problem of deviation in the inspection results due to a large amount of body fluids attached to a single ultrasonic transmitter 86 and ultrasonic receiver 87 or damage, thereby improving the accuracy of the detection results of the device. In addition, by setting up multiple groups of ultrasonic transmitters 86 and ultrasonic receivers 87, when the ultrasonic waves emitted by some ultrasonic transmitters 86 are blocked by the connecting piece 53, the ultrasonic waves emitted by other unblocked ultrasonic transmitters 86 can still work normally, thereby providing stability to the device.

[0035] See also Figure 10-11 and Fig.14 The limiting device 9 includes a connecting shell 91 , and the front end of the connecting shell 91 is connected to the end of the outer cover shell 81 .

[0036] The operator can release the connecting shell 91 through high-frequency traction, so that the mounting seat 85 can continuously retract and retract inside the outer cover shell 81. During this process, the brush 802 can clean the ultrasonic transmitter 86 and the ultrasonic receiver 87 on the top and bottom surfaces of the mounting seat 85, thereby eliminating body fluids and dust attached to the surfaces of the ultrasonic transmitter 86 and the ultrasonic receiver 87, thereby improving the detection accuracy and providing the reliability of the device.

[0037] See also Figure 2 and Figure 14-16 A traction rope 92 is fixedly connected to the end of the connecting shell 91, and one end of the traction rope 92 is connected to the winding wheel 4. A strip hole 93 is opened on the outer surface of the connecting shell 91 near the front end. The number of the strip holes 93 is four and they are distributed in a circular array. A mounting slot 94 is fixedly installed on the inner wall of the connecting shell 91 at a position behind the strip hole 93. A limit touch plate 95 is fixedly installed inside the mounting slot 94. A limit seat 96 is fixedly installed at the front end of the limit touch plate 95. The limit seat 96 extends from the inside of the strip hole 93.

[0038] The ultrasonic transmitter 86 and the ultrasonic receiver 87 are respectively arranged on the top surface and the bottom surface of the mounting seat 85. The ultrasonic transmitter 86 and the ultrasonic receiver 87 of which area are to be turned on can be selected by manual operation. When the directions of the ultrasonic transmitter 86 and the ultrasonic receiver 87 need to be adjusted, the operator can drive the winding wheel 4 to rotate by rotating the operating handle 3. Since one end of the traction rope 92 is connected to the winding wheel 4, the traction rope 92 will be wound and the connecting shell 91 will be pulled during the rotation of the winding wheel 4. At this time, the front end of the connecting shell 91 is connected to the end of the outer cover shell 81, so that after the connecting shell 91 is pulled and displaced, the outer cover shell 81 will be displaced synchronously. When the detection device 8 moves to the position between the front sleeve 51 and the rear sleeve 55, the extension amount of the stop telescopic rod 74 reaches the limit and the front end of the stop telescopic rod 74 is in the inner of the matching deep hole 89. The travel limit of the part is also reached and it is limited. At this time, the mounting seat 85 stops moving, and the traction rope 92 continues to pull the connecting shell 91 and drive the outer cover shell 81 to move, so that the mounting seat 85 is detached from the inside of the outer cover shell 81. At this time, the ultrasonic transmitter 86 and the ultrasonic receiver 87 on the top and bottom surfaces of the mounting seat 85 are exposed from the inside of the outer cover shell 81, and at the same time, the outer cover shell 81 continues to move in the direction close to the winding wheel 4, and under the guidance of the slider 82 and the guide spiral groove 56, the outer cover shell 81 rotates in its own direction. The cross-section of the synchronous telescopic rod 83 is hexagonal. When the outer cover shell 81 rotates, it will drive the mounting seat 85 to rotate synchronously, thereby changing the direction of the ultrasonic transmitter 86 and the ultrasonic receiver 87, so that medical personnel do not need to adjust the posture of the winding wheel 4 when adjusting the direction of the ultrasonic wave, avoiding the problem of discomfort caused by the displacement of the connecting device 5 in the patient's body, thereby improving the practicality of the device.

[0039] See also Figure 2-Figure 6 In the initial state, the limiting seat 96 is connected to the end of the front sleeve 51, thereby playing a limiting role.

[0040] When the inspection is completed, the winding wheel 4 stops curling and releases the wound traction rope 92. Under the elastic force of the first reset spring 75 and the second reset spring 84, the detection device 8 and the limit device 9 are reset synchronously until the front side of the mounting slot 94 contacts and locks the end of the front sleeve 51. At this time, the connecting shell 91 can completely close the gap between the front sleeve 51 and the rear sleeve 55, which can prevent external dust from invading the interior of the device during normal storage, thereby affecting the ultrasonic transmitter 86 and the ultrasonic receiver 87 and causing a decrease in detection accuracy, thereby further improving the practicability of the device.

[0041] The method of use of the present invention is as follows: During use, the connecting device 5 is inserted into the abdominal cavity of the patient, and the ultrasonic transmitter 86 and the ultrasonic receiver 87 above or below the mounting seat 85 are activated according to the position of the patient. The device adopts an array and an interlaced arrangement of the ultrasonic transmitter 86 and the ultrasonic receiver 87. By having multiple sets of ultrasonic transmitters 86 and ultrasonic receivers 87 working simultaneously, multiple sets of data information can be obtained simultaneously, thereby improving the accuracy of the results obtained by ultrasonic detection. By setting multiple sets of ultrasonic transmitters 86 and ultrasonic receivers 87, when the ultrasonic waves emitted by some ultrasonic transmitters 86 are blocked by the connecting member 53, the ultrasonic waves emitted by other unblocked ultrasonic transmitters 86 can still work normally. The ultrasonic transmitter 86 and the ultrasonic receiver 87 of which area are activated are selected by manual operation. When the direction of the ultrasonic transmitter 86 and the ultrasonic receiver 87 needs to be adjusted, the operator can drive the winding wheel 4 to rotate by rotating the operating handle 3. Since one end of the traction rope 92 is connected to the winding wheel 4, the traction rope 92 will be wound around the winding wheel 4 during the rotation of the winding wheel 4 and the connecting shell 91 will be pulled. At this time, the front end of the connecting shell 91 is connected to the end of the outer cover shell 81, so that after the connecting shell 91 is pulled and displaced, the outer cover shell 81 will move synchronously. When the detection device 8 moves to the position between the front sleeve 51 and the rear sleeve 55, the extension amount of the stop telescopic rod 74 reaches the limit and the front end of the stop telescopic rod 74 also reaches the travel limit inside the matching deep hole 89 and is limited. At this time, the mounting seat 85 stops moving, and the traction rope 92 continues to pull the connecting shell 91 and drive the outer cover shell 81 to move, so that the mounting seat 85 is detached from the inside of the outer cover shell 81. At the same time, the ultrasonic transmitter 86 and the ultrasonic receiver 87 on the top and bottom surfaces of the mounting seat 85 are exposed from the inside of the outer cover shell 81, and at the same time, the outer cover shell 81 continues to move in the direction close to the winding wheel 4, and under the guidance of the slider 82 and the guide spiral groove 56, the outer cover shell 81 rotates in its own direction. The cross-section of the synchronous telescopic rod 83 is hexagonal, and when the outer cover shell 81 rotates, it will drive the mounting seat 85 to rotate synchronously, thereby changing the direction of the ultrasonic transmitter 86 and the ultrasonic receiver 87, so that medical personnel do not need to adjust the posture of the winding wheel 4 when adjusting the direction of the ultrasonic wave.

[0042] When the inspection is completed, the winding wheel 4 stops curling and releases the wound traction rope 92. Under the elastic force of the first reset spring 75 and the second reset spring 84, the detection device 8 and the limit device 9 are reset synchronously until the front side of the mounting slot 94 contacts and locks the end of the front sleeve 51. At this time, the connecting shell 91 can completely close the gap between the front sleeve 51 and the rear sleeve 55, which can prevent external dust from invading the interior of the device during normal storage. The operator can release the connecting shell 91 through high-frequency traction, so that the mounting seat 85 can continuously retract and retract inside the outer cover shell 81. During this process, the brush 802 can clean the ultrasonic transmitter 86 and the ultrasonic receiver 87 on the top and bottom surfaces of the mounting seat 85, thereby eliminating body fluids and dust attached to the surfaces of the ultrasonic transmitter 86 and the ultrasonic receiver 87.

Claims

1. A laparoscope, characterized in that: The invention comprises a main body shell (1), a handle (2) is fixedly mounted on the end of the main body shell (1), an operating handle (3) is arranged on the top of the main body shell (1), a winding wheel (4) is arranged on the inner movable sleeve of the operating handle (3), and the winding wheel (4) is connected to the operating handle (3), a connecting device (5) is arranged on the front fixed sleeve of the main body shell (1), a camera (6) is arranged on the front fixed sleeve of the connecting device (5), a stop device (7) is fixedly mounted on the inner cavity of the connecting device (5) at a position close to the front end, a detection device (8) is fixedly mounted on the inner cavity of the connecting device (5) at a position close to the terminal end, and a limit device (9) is fixedly mounted on the inner cavity of the connecting device (5) at a position close to the terminal end.

2. A laparoscope according to claim 1, characterized in that: The connecting device (5) comprises a front end sleeve (51), the camera (6) and the front end of the front end sleeve (51) are fixed by bolt connection, the inner wall of the front end sleeve (51) is provided with a guide straight groove (52), the camera (6) matches the guide straight groove (52), a connecting piece (53) is fixedly mounted on the outer surface of the front end sleeve (51) at a position close to the end, a connecting groove (54) is provided on the inner side of the connecting piece (53), a rear end sleeve (55) is fixedly mounted on one end of the connecting groove (54), and a guide spiral groove (56) is provided on the inner wall of the rear end sleeve (55); The number of the straight guide grooves (52), the connecting grooves (54) and the spiral guide grooves (56) are all four and are distributed in a circular array, and the straight guide grooves (52), the connecting grooves (54) and the spiral guide grooves (56) form a continuous track; The guide spiral groove (56) is spiral-shaped, and the spiral angle is one hundred and eighty degrees.

3. A laparoscope according to claim 1, characterized in that: The stop device (7) comprises a connecting top plate (71), the two ends of the connecting top plate (71) are fixedly connected to the inner wall of the front end sleeve (51), a rotating seat (72) is movably sleeved at the center position of the top of the connecting top plate (71), a rotating plate (73) is fixedly mounted at one end of the rotating seat (72), a stop telescopic rod (74) is fixedly mounted at a position close to the two ends of one side of the rotating plate (73), the stop telescopic rod (74) cooperates with the detection device (8), a first return spring (75) is clamped at a center position of one side of the rotating plate (73), and one end of the first return spring (75) is connected to the detection device (8).

4. A laparoscope according to claim 3, characterized in that: The detection device (8) comprises an outer cover shell (81), a slider (82) is fixedly mounted on the outer surface of the outer cover shell (81) at a position close to the front end, the number of the sliders (82) is four and they are arranged in a circular array, a synchronous telescopic rod (83) is fixedly mounted on the bottom of the inner cavity of the outer cover shell (81), a second return spring (84) is clamped on the bottom of the inner cavity of the outer cover shell (81) at a position outside the synchronous telescopic rod (83), a mounting seat (85) is movably mounted at a position close to the middle of the inner cavity of the outer cover shell (81), an ultrasonic transmitter (86) and an ultrasonic receiver (87) are arranged on the top and bottom surfaces of the mounting seat (85), and a synchronous telescopic rod (83) is fixedly mounted on the bottom of the inner cavity of the outer cover shell (81) at a position close to the center of the front end of the mounting seat (85). A gasket (88) is provided, the gasket (88) being engaged with the first return spring (75), a matching deep hole (89) is provided at the front end of the mounting seat (85) at positions on both sides of the gasket (88), the stop telescopic rod (74) is engaged with the matching deep hole (89), a connecting seat (801) is fixedly installed above and below the inner wall of the outer cover shell (81), a brush (802) is fixedly installed at one end of the connecting seat (801), the brush (802) is in contact with the ultrasonic transmitter (86) and the ultrasonic receiver (87), and a hexagonal synchronization hole (803) is provided at a position close to the center of the end of the mounting seat (85), the hexagonal synchronization hole (803) is engaged with the synchronous telescopic rod (83).

5. A laparoscope according to claim 4, characterized in that: The ultrasonic transmitters (86) and the ultrasonic receivers (87) are distributed in a rectangular array, and the ultrasonic transmitters (86) and the ultrasonic receivers (87) are distributed in a staggered manner.

6. A laparoscope according to claim 2, characterized in that: The limiting device (9) comprises a connecting shell (91), a traction rope (92) is fixedly connected to the end of the connecting shell (91), one end of the traction rope (92) is connected to the winding wheel (4), a strip hole (93) is opened at a position close to the front end of the outer surface of the connecting shell (91), the number of the strip holes (93) is four and they are distributed in a circular array, a mounting slot (94) is fixedly installed at a position behind the strip holes (93) on the inner wall of the connecting shell (91), a limiting touch plate (95) is fixedly installed inside the mounting slot (94), a limiting seat (96) is fixedly installed at the front end of the limiting touch plate (95), and the limiting seat (96) protrudes from the inside of the strip hole (93).

7. A laparoscope according to claim 6, characterized in that: The limiting seat (96) is connected to the end of the front sleeve (51) in an initial state.

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