Locking block type laparoscope cannula device
By designing a locking block type laparoscopic cannula device, the problem of poor versatility of laparoscopic cannulas was solved, enabling the fixation and protection of laparoscopes of different sizes, reducing the frequency of disinfection, extending service life, and saving costs.
Patent Information
- Application Number
- CN202421806328.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The existing technology for laparoscopic cannulas has poor versatility, resulting in high costs and complex assembly. Furthermore, the laparoscopic lens requires repeated sterilization, which affects its service life.
A locking block type laparoscopic cannula device was designed, including a laparoscopic sheath, a fixing base and a locking mechanism. The locking block can be adjusted to fix and protect laparoscopes of different sizes, reducing the frequency of disinfection.
It improves the versatility of laparoscopic cannula devices, reduces the number of disinfection cycles, extends the service life of laparoscopes, and saves disinfection costs and preparation time.
Smart Images
Figure CN223810626U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to surgical operation equipment technical field, especially a locking block type laparoscope cannula device. BACKGROUND
[0002] In the external laparoscopic minimally invasive surgery, the laparoscope lens needs to be sterilized before each use, and repeated sterilization not only increases the cost, but also seriously affects the service life of the lens, causing waste of equipment resources. In the prior art, there is a lack of a general one-piece protective sleeve for various laparoscope lenses, and only a few manufacturers have their own special one-piece laparoscope cannula, which can only be used for specific laparoscope lenses. Not only is the cost high, but also the assembly is complex.
[0003] Therefore, a locking block type laparoscope cannula device is needed to solve the above problems. SUMMARY
[0004] Based on the above, the purpose of the utility model is to provide a locking block type laparoscope cannula device, which solves the technical problem of poor universality of the laparoscope cannula in the prior art, and is beneficial to prolonging the service life of the laparoscope and improving the assembly efficiency.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A laparoscope cannula device, comprising a lens sheath tube, a fixed seat and a locking mechanism;
[0007] An axial through hole is formed in the fixed seat, one end of the lens sheath tube is connected to one end of the fixed seat, and the through hole is in communication with the lens sheath tube;
[0008] The locking mechanism is arranged at the other end of the fixed seat, the locking mechanism comprises a housing and a locking assembly, a receiving cavity is formed in the housing, an installation hole is formed in the housing and is arranged opposite to the through hole, the locking assembly comprises a plurality of locking blocks arranged in the receiving cavity in a circumferential ring around the installation hole, a plurality of locking holes are formed between the locking blocks, the laparoscope is sleeved in the lens sheath tube after passing through the installation hole, the locking hole and the through hole in sequence, and a plurality of locking blocks can approach or move away from each other to make the locking hole smaller or larger, and make a plurality of locking blocks clamp or release the laparoscope.
[0009] As a preferred scheme of the laparoscope cannula device, the locking assembly further comprises a driving ring and a plurality of connecting rods, the driving ring is rotationally arranged in the receiving cavity, a plurality of connecting seats are arranged in a spaced ring on the inner wall of the driving ring, one end of each connecting rod is rotationally connected to one connecting seat, the other end is rotationally connected to one locking block, and each locking block is eccentrically rotationally connected to the inner wall of the housing.
[0010] As a preferred solution of the laparoscope cannula device, the locking mechanism further comprises a plurality of limiting blocks, the plurality of limiting blocks are arranged in the accommodating cavity in a spaced manner, and the plurality of limiting blocks and the plurality of locking blocks are arranged in an interlaced manner.
[0011] As a preferred solution of the laparoscope cannula device, the outer wall of the driving ring is connected with a driving handle, and the lateral wall of the shell is provided with an adjusting groove, and the driving handle extends out of the accommodating cavity through the adjusting groove.
[0012] As a preferred solution of the laparoscope cannula device, the outer wall of the shell is provided with a plurality of inclined teeth in the circumferential direction of the shell, the driving handle is provided with a barb, the inclined direction of the barb is opposite to the inclined direction of the inclined teeth, the barb is limited to be connected to one of the inclined teeth, and the driving handle can be forced to make the barb disengage from the inclined teeth.
[0013] As a preferred solution of the laparoscope cannula device, the fixing seat comprises a fixing seat body and an upper cover arranged at one end of the fixing seat body, the through hole penetrates through the fixing seat body and the upper cover, one end of the laparoscope sheath is connected to one end of the fixing seat body away from the upper cover, and the upper cover and the shell are in butt joint to form the accommodating cavity.
[0014] As a preferred solution of the laparoscope cannula device, one side of the upper cover facing the shell is provided with a first limiting ring, and the inner circumferential wall of the shell is provided with a second limiting ring, and the driving ring is movably limited between the first limiting ring and the second limiting ring.
[0015] As a preferred solution of the laparoscope cannula device, the outer edge of the locking block is provided with a buffer pad.
[0016] As a preferred solution of the laparoscope cannula device, a sterile cover is further included, one end of the sterile cover is fixed to the fixing seat, the sterile cover is sleeved on the laparoscope sheath and can be forced to be turned over to be sleeved on the locking mechanism and the connecting cable of the laparoscope.
[0017] As a preferred solution of the laparoscope cannula device, one end of the laparoscope away from the fixing seat is sealingly provided with a transparent sheet.
[0018] The laparoscope cannula device has the following beneficial effects:
[0019] The utility model provides a lock block type laparoscope cannula device, the lock block type laparoscope cannula device includes mirror sheath, fixed base and locking mechanism, passes through the laparoscope is inserted into the lock hole and is sleeved into mirror sheath, provides the protection function for laparoscope by mirror sheath, alleviates the repeated disinfection work, is favorable for prolonging the service life of laparoscope, then through adjusting a plurality of lock blocks, makes a plurality of lock blocks clamp laparoscope, realizes the position fixation of laparoscope and mirror sheath, avoids laparoscope and separates from mirror sheath, and through a plurality of lock blocks clamping laparoscope, can be applicable to different size laparoscope, makes the general property of this lock block type laparoscope cannula device is better. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be briefly introduced the drawing needed to be used in the embodiment of the utility model, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to the content of the embodiment of the utility model and these drawings.
[0021] Figure 1 It is the side view of laparoscope cannula device provided by the embodiment of the utility model Figure One (The aseptic cover is not turned over yet);
[0022] Figure 2 It is the side view of laparoscope cannula device provided by the embodiment of the utility model Figure Two (The aseptic cover is turned over);
[0023] Figure 3 It is the structure schematic view of laparoscope cannula device provided by the embodiment of the utility model;
[0024] Figure 4 It is the partial structure schematic view of laparoscope cannula device under the first visual angle (mirror sheath and aseptic cover are not shown) provided by the embodiment of the utility model;
[0025] Figure 5 It is the partial structure schematic view of laparoscope cannula device under the second visual angle (mirror sheath and aseptic cover are not shown) provided by the embodiment of the utility model;
[0026] Figure 6 It is the plan view of locking mechanism provided by the embodiment of the utility model;
[0027] Figure 7 It is the structure schematic view of locking mechanism provided by the embodiment of the utility model;
[0028] Figure 8 It is the explosion view of fixed base and locking mechanism under the third visual angle provided by the embodiment of the utility model;
[0029] Figure 9 is an exploded view of the fixing seat and locking mechanism under the fourth visual angle.
[0030] In the figure:
[0031] 1, mirror sheath; 2, fixing seat; 20, through hole; 21, upper cover; 211, first limiting ring; 3, locking mechanism; 30, mounting hole; 31, shell; 310, accommodating cavity; 311, second limiting ring; 32, locking assembly; 321, locking block; 322, driving ring; 323, connecting rod; 324, connecting seat; 325, driving handle; 326, inverted hook; 327, helical tooth; 33, limiting block; 4, sterile cover; 5, boss. DETAILED DESCRIPTION
[0032] The utility model will be made further detailed description in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.
[0033] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0034] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0035] In the description of the present embodiment, the terms "upper", "lower", "left", "right" and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.
[0036] As Figures 1 to 9 shown, the present embodiment provides a lock block 321 type laparoscope cannula device, which comprises a mirror sheath 1, a fixing seat 2 and a locking mechanism 3, the fixing seat 2 is provided with a through hole 20 in the axial direction, one end of the mirror sheath 1 is connected to one end of the fixing seat 2 and communicates with the through hole 20 in a opposite manner, the locking mechanism 3 is arranged at the other end of the fixing seat 2, the locking mechanism 3 comprises a shell 31 and a locking assembly 32, the shell 31 forms a containing cavity 310, the shell 31 is provided with a mounting hole 30 arranged in a opposite manner with the first through hole 20, the locking assembly 32 comprises a plurality of lock blocks 321 arranged in a circumferential ring in the containing cavity 310 around the mounting hole 30, a plurality of lock holes are formed between the plurality of lock blocks 321, the laparoscope is sleeved in the mirror sheath 1 after passing through the mounting hole 30, the lock hole and the through hole 20 in sequence, the plurality of lock blocks 321 can be close to or away from each other to make the lock hole smaller or larger, and the plurality of lock blocks 321 can clamp or release the laparoscope. By extending the laparoscope into the lock hole and then sleeving it into the mirror sheath 1, the mirror sheath 1 provides protection for the laparoscope, reduces the work of repeated disinfection, and is beneficial to prolong the service life of the laparoscope; then the plurality of lock blocks 321 are adjusted to clamp the laparoscope, the position of the laparoscope and the mirror sheath 1 is fixed, the laparoscope is prevented from separating from the mirror sheath 1, and the plurality of lock blocks 321 can be suitable for laparoscopes of different sizes, so that the versatility of the lock block 321 type laparoscope cannula device is better.
[0037] Preferably, a transparent sheet is sealingly arranged at the end of the mirror sheath 1 away from the fixing seat 2, the transparent sheet is arranged to protect the laparoscope in all directions while avoiding blocking the view of the laparoscope lens. Optionally, the transparent sheet can be but is not limited to a glass sheet, a transparent acrylic sheet and the like.
[0038] Specifically, the cavity sleeve device further comprises a sterile cover 4, one end of the sterile cover 4 is fixed to the fixed seat 2, the sterile cover 4 is sleeved outside the mirror sheath 1 and can be forced to flip to be sleeved outside the locking mechanism 3 and the connecting cable of the laparoscope. After the laparoscope is sleeved into the mirror sheath 1 and limited by the locking mechanism 3, the sterile cover 4 is flipped, the mirror sheath 1 originally covered by the sterile cover 4 is exposed, so that the mirror sheath 1 does not need additional disinfection treatment, the locking mechanism 3 and the connecting cable of the laparoscope are covered by the sterile cover 4 after the sterile cover 4 is flipped, so that the medical staff contacts the sterile cover 4 instead of directly contacting the connecting cable, additional disinfection treatment of the connecting cable is not needed, the preoperative workload of the medical staff is greatly reduced, the preoperative preparation time is saved, and the disinfection cost is saved.
[0039] More specifically, the fixed seat 2 comprises a fixed seat 2 body and an upper cover 21 arranged at one end of the fixed seat 2 body, the through hole 20 penetrates the fixed seat 2 body and the upper cover 21, one end of the mirror sheath 1 is connected to one end of the fixed seat 2 body away from the upper cover 21, the opening of the upper cover 21 faces the shell 31 and is in butt joint with the shell 31 to form the above-mentioned accommodating cavity 310, and one end of the sterile cover 4 is fixed to one side of the upper cover 21 close to the mirror sheath 1. In addition to the butt joint of the upper cover 21 and the shell 31 to form the accommodating cavity 310, the upper cover 21 also provides a support surface for the sterile cover 4, so that the sterile cover 4 can be stably sleeved outside the mirror sheath 1, and after the sterile cover 4 is flipped, the sterile cover 4 can maintain a good and stable shape under the support of the upper cover 21 and is relatively regular sleeved outside the locking mechanism 3 and the connecting cable.
[0040] Preferably, the side of the upper cover 21 facing the shell 31 is provided with a first limiting ring 211, the inner circumferential wall of the shell 31 is provided with a second limiting ring 311, and the driving ring 322 is movably limited between the first limiting ring 211 and the second limiting ring 311. By limiting the driving ring 322 between the first limiting ring 211 and the second limiting ring 311, the position of the driving ring 322 is stable on the plane when the driving ring 322 rotates, which avoids the axial displacement of the driving ring 322, improves the stability and reliability of the locking hole adjustment.
[0041] In the embodiment, the lock block 321 type laparoscope cannula device is made of disposable medical material, such as medical plastic, etc. In use, the lock block 321 type laparoscope cannula device which has been sterilized is taken out, the laparoscope is sleeved and fixed in the lock block 321 type laparoscope cannula device, then the connecting cable of the laparoscope is connected, after that the sterile cover 4 is turned over to cover the connecting cable, and then the operation in the surgery can be performed without complicated sterilization process. In the use process, the laparoscope sleeved with the laparoscope sheath tube 1 enters the human body, and in the detection process, the laparoscope sleeved with the laparoscope sheath tube 1 can be repeatedly sterilized, which is convenient to operate and avoids damage caused by repeated sterilization of the laparoscope. After use, the laparoscope sleeved with the laparoscope sheath tube 1 is withdrawn from the human body, the plurality of lock blocks 321 are away from each other to release the laparoscope, the connecting cable is detached, and after the laparoscope is taken out, the laparoscope cannula device which is exempted from sterilization is discarded. The whole use process is simple and convenient, which greatly saves the preoperative sterilization time and sterilization cost, and reduces the workload of medical staff. Of course, in other embodiments, the lock block 321 type laparoscope cannula device can also be repeatedly used or partially repeatedly used, and after one use is completed, the lock block 321 type laparoscope cannula device as a whole or the part to be repeatedly used is sterilized, so that the laparoscope does not need to be repeatedly sterilized.
[0042] Further, the locking assembly 32 further comprises a driving ring 322 and a plurality of connecting rods 323. The driving ring 322 is rotationally arranged in the accommodating cavity 310, and a plurality of connecting seats 324 are arranged on the inner wall of the driving ring 322 at intervals. One end of each connecting rod 323 is rotationally connected to one connecting seat 324, and the other end is rotationally connected to one lock block 321. Each lock block 321 is eccentrically rotationally connected to the inner wall of the shell 31. For example, the lock block 321 is rotationally connected to the inner bottom wall of the shell 31 through a rotating pin. When the driving ring 322 rotates in one direction, the connecting seats 324 on the inner wall of the driving ring 322 rotate around the center of the driving ring 322, and each connecting seat 324 drives the lock block 321 to rotate through the connecting rod 323. Since the lock block 321 is eccentrically rotationally connected to the inner bottom wall of the shell 31, when the lock block 321 rotates, part of the outer edge of the lock block 321 gradually approaches the center of the lock hole, so that the lock hole becomes smaller, that is, the laparoscope is clamped. When the driving ring 322 rotates in the other direction, part of the outer edge of the lock block 321 gradually moves away from the center of the lock hole when the connecting seat 324 drives the lock block 321 to rotate, so that the lock hole becomes larger, that is, the laparoscope is released. The rotation of the plurality of eccentric lock blocks 321 realizes locking and unlocking, which can be suitable for laparoscopes of different sizes, so that the lock block 321 type laparoscope cannula device has better universality.
[0043] Preferably, the locking mechanism 3 further comprises a plurality of limiting blocks 33, which are arranged in the accommodating cavity 310 in a spaced ring manner, and the plurality of locking blocks 321 and the plurality of limiting blocks 33 are arranged alternately, and when the driving ring 322 rotates to drive the plurality of locking blocks 321 to approach each other to a preset limit position, each locking block 321 abuts against one limiting block 33. After the locking block 321 abuts against the limiting block 33 during rotation, the locking block 321 cannot continue to rotate, that is, the locking hole reaches the minimum aperture. The limiting block 33 limits the maximum distance that the plurality of locking blocks 321 can approach each other, that is, limits the minimum aperture of the locking hole, avoids that the distance between the plurality of locking blocks 321 is too small to cause the laparoscope to be damaged due to excessive force, and improves the use safety and reliability of the locking mechanism 3.
[0044] In the embodiment, the edge of the locking block 321 that contacts the laparoscope is arc-shaped, which avoids damaging the laparoscope; the edge of the locking block 321 that contacts the limiting block 33 is a first inclined surface, and the edge of the limiting block 33 that contacts the locking block 321 is a second inclined surface, so that when the locking block 321 and the limiting block 33 abut against each other, the contact surface is large, and when the locking block 321 rotates to the first inclined surface to contact the second inclined surface, the locking block 321 can continue to rotate by a certain angle until the locking block 321 is blocked by the limiting block 33, thereby increasing the adjustable range of the aperture of the locking hole.
[0045] Preferably, the edge of the locking block 321 that contacts the laparoscope is provided with a buffer pad, which protects and buffers the outer wall of the laparoscope, and avoids damaging the outer wall of the laparoscope. Alternatively, the buffer pad is a rubber pad or a cotton pad, and the specific setting is based on actual needs.
[0046] Specifically, the outer wall of the driving ring 322 is connected with a driving handle 325, and the side wall of the shell 31 is provided with an adjusting groove, and the driving handle 325 extends out of the accommodating cavity 310 through the adjusting groove. The driving handle 325 is arranged to facilitate the operation of medical staff, and by holding the driving handle 325 and rotating it, the driving ring 322 is driven to rotate, so that the locking block 321 clamps or releases the laparoscope.
[0047] More specifically, the outer wall of the shell 31 is provided with a plurality of inclined teeth 327 along the circumference of the shell 31, the driving handle 325 is provided with a barb 326, the inclination direction of the barb 326 is opposite to that of the inclined teeth 327, the barb 326 is limitedly connected to one inclined tooth 327, and the driving handle 325 can be forced to make the barb 326 disengage from the inclined tooth 327. By connecting the barb 326 and the inclined tooth 327 with opposite inclination directions, the position of the driving handle 325 is fixed, that is, the inclined teeth 327 limit the rotation direction of the driving handle 325, so that the driving handle 325 can only rotate in the inclination direction of the inclined teeth 327, and every time the driving handle 325 rotates by a certain angle in the inclination direction of the inclined teeth 327, the barb 326 automatically hooks into the next inclined tooth 327, preventing the driving handle 325 from returning, and realizing one-way adjustment of the lock hole aperture. In this embodiment, when the driving handle 325 rotates in the inclination direction of the inclined teeth 327, the plurality of locking blocks 321 move closer to each other, that is, the lock hole aperture becomes smaller, and the laparoscope is clamped.
[0048] Preferably, the outer circumferential wall of the shell 31 is further provided with at least one boss 5, which provides a force application site when a medical staff operates the driving handle 325, that is, the medical staff can drive the driving ring 322 to rotate by pushing the boss 5, and it is also convenient to press the boss 5 to pull the driving handle 325 outward, so that the barb 326 disengages from the inclined tooth 327.
[0049] The following is the use method of the locking block 321 type laparoscope cannula device:
[0050] After the laparoscope is sequentially inserted through the mounting hole 30, the lock hole and the through hole 20, it is sleeved in the laparoscope sheath 1;
[0051] After the lens of the laparoscope is in place in the laparoscope sheath 1, the driving handle 325 is rotated by hand to rotate the driving ring 322, the driving ring 322 drives the locking block 321 to rotate through the connecting rod 323, until the plurality of locking blocks 321 clamp the outer wall of the laparoscope, and the barb 326 on the driving handle 325 is limitedly connected to one inclined tooth 327 on the outer wall of the shell 31, preventing the driving ring 322 from returning;
[0052] After clamping the laparoscope, the sterile cover 4 is turned over to cover the locking mechanism 3 and the connecting cable of the laparoscope, and the laparoscope sheath 1 is exposed;
[0053] When disinfection is needed during use, the laparoscope sheath 1 is disinfected;
[0054] After the use of the laparoscope is completed, the sterile cover 4 is turned over to expose the locking mechanism 3;
[0055] Reverse rotation drive ring 322, so that the drive ring 322 with lock block 321 reverse rotation, namely a plurality of lock block 321 away from the outer wall of the laparoscope, so that the laparoscope can be extracted from the lock hole.
[0056] By the laparoscope with sterile cover 4 sheath mirror sheath 1 laparoscope outside, can avoid repeated disinfection of laparoscope, save disinfection cost, and is beneficial to prolong the service life of laparoscope, can also save preoperative preparation time, and by turning over sterile cover 4, so that the sterile cover 4 cover connection cable, save the disinfection time of connection cable.
[0057] Note that the above is only the preferred embodiments of the present application and the application of the technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, those skilled in the art can make various obvious changes, re-adjustment and substitution without departing from the scope of the present application. Therefore, although the above embodiments of the present application has been described in more detail, the present application is not limited to the above embodiments, without departing from the concept of the present application, it can also include more other equivalent embodiments, and the scope of the present application is determined by the appended claims.
Claims
1. A lock-block laparoscopic cannula device, characterized by, The mirror sheath tube, the fixed seat and the locking mechanism are included. An axial through hole is formed in the fixed seat, and one end of the mirror sheath tube is connected to one end of the fixed seat and communicates with the through hole. The locking mechanism is arranged at the other end of the fixed seat and includes a housing and a locking assembly. The housing has a receiving cavity formed therein, and a mounting hole is formed in the housing and arranged opposite to the through hole. The locking assembly includes a plurality of locking blocks arranged in the receiving cavity in a circumferential ring around the mounting hole. A plurality of locking holes are formed between the locking blocks. The laparoscope is sequentially sleeved in the mirror sheath tube through the mounting hole, the locking hole and the through hole. The plurality of locking blocks can be close to or away from each other to make the locking hole smaller or larger, and the plurality of locking blocks can clamp or release the laparoscope.
2. The lock-block laparoscopic cannula device of claim 1, wherein, The locking assembly further includes a driving ring and a plurality of connecting rods. The driving ring is rotationally arranged in the receiving cavity. A plurality of connecting seats are arranged in a circumferential ring on the inner wall of the driving ring. One end of each connecting rod is rotationally connected to one connecting seat, and the other end is rotationally connected to one locking block. Each locking block is eccentrically rotationally connected to the inner wall of the housing.
3. The lock-block laparoscopic cannula device of claim 2, wherein, The locking mechanism further includes a plurality of limiting blocks arranged in the receiving cavity in a circumferential ring. The plurality of limiting blocks and the plurality of locking blocks are arranged alternately. When the driving ring rotationally drives the plurality of locking blocks to be close to each other to a preset limit position, each locking block abuts against one limiting block.
4. The lock-block laparoscopic cannula device of claim 2, wherein, The outer wall of the driving ring is connected with a driving handle, and the side wall of the housing is provided with an adjusting groove. The driving handle extends out of the receiving cavity through the adjusting groove.
5. The lock-block laparoscopic cannula device of claim 4, wherein, The outer wall of the housing is provided with a plurality of inclined teeth along the circumference of the housing. The driving handle is provided with a barb. The inclination direction of the barb is opposite to the inclination direction of the inclined teeth. The barb is limitingly connected to one inclined tooth. The driving handle can be forced to make the barb disengage from the inclined tooth.
6. The lock-block laparoscopic cannula device of claim 2, wherein, The fixed seat includes a fixed seat body and an upper cover arranged at one end of the fixed seat body. The through hole penetrates the fixed seat body and the upper cover. One end of the mirror sheath tube is connected to one end of the fixed seat body away from the upper cover. The upper cover and the housing abut to form the receiving cavity.
7. The lock-block laparoscopic cannula device of claim 6, wherein, One side of the upper cover facing the housing is convexly provided with a first limiting ring. The inner circumferential wall of the housing is convexly provided with a second limiting ring. The driving ring is movably limited between the first limiting ring and the second limiting ring.
8. The block lock laparoscopic cannula device according to any one of claims 1-7, wherein, The outer edge of the locking block is provided with a buffer pad.
9. The block lock laparoscopic cannula device according to any one of claims 1-7, wherein, The sterile cover is further included. One end of the sterile cover is fixed to the fixed seat. The sterile cover is sleeved outside the mirror sheath tube and can be forced to turn over to be sleeved outside the locking mechanism and the connecting cable of the laparoscope.
10. The block lock laparoscopic cannula device according to any one of claims 1-7, wherein, The end of the laparoscope away from the fixed seat is sealingly provided with a transparent sheet.