A flip-cover, non-detachable puncture device

Abstract

The utility model discloses a flip-top non-detachable puncture device, comprising a puncture rod assembly, a sealing cover assembly and a puncture sleeve assembly, one side of the sealing cover assembly is hingedly mounted on the proximal side of the puncture sleeve assembly through a hinge assembly, and a lock assembly for detachably snapping the two together is provided between the other side of the sealing cover assembly and the other side of the proximal end of the puncture sleeve assembly, and the distal end of the puncture rod assembly passes through the sealing cover assembly and the puncture sleeve assembly in sequence and extends to the distal outer side of the puncture sleeve assembly. The flip-top non-detachable puncture device of the utility model is hingedly connected to the proximal side of the puncture sleeve assembly on one side of the sealing cover assembly, and the other side is detachably snapped with the other side of the proximal end of the puncture sleeve assembly through the lock assembly. After the puncture rod assembly is pulled out during surgery and other medical devices are connected, it is only necessary to unlock the lock assembly and then flip the sealing assembly to open it. The operation is convenient, and the sealing cover assembly and the proximal end of the puncture sleeve assembly are effectively prevented from being stuck, thereby ensuring the smoothness of the surgical operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a flip-cover disassembly-free puncture device. Background Art

[0002] A trocar is a surgical instrument used to establish a channel into the abdominal cavity. The trocar usually consists of two parts: a cannula assembly and a puncture rod assembly. Its general clinical use is: first make a small incision on the patient's abdomen, then pass the distal end of the puncture rod assembly through the cannula assembly, and expose the distal end of the puncture rod from the distal end of the cannula assembly. The doctor holds the proximal end of the puncture rod and applies a puncture operating force to the trocar, so that the distal end of the puncture rod is inserted into the abdominal cavity and drives the distal end of the cannula assembly into the abdominal cavity. After the puncture rod is pulled out, the cannula assembly forms a channel for surgical instruments to enter and exit the abdominal cavity.

[0003] During surgery, it is usually necessary to establish and maintain a stable pneumoperitoneum so that sufficient surgical operation space is formed inside the abdominal cavity. In order to avoid pneumoperitoneum leakage, a conversion cap that can achieve further sealing is usually connected to the sleeve bin at the proximal end of the sleeve, and is arranged between the sleeve bin and the puncture rod gripping portion. In the disclosed prior art, a first seal is arranged in the sleeve bin, and a second seal is arranged in the conversion cap. Due to the different structures of the two seals, the first seal usually provides a sealing effect when there is no puncture rod or surgical instrument passing through the sleeve assembly, and the second seal usually plays a sealing role when there is a surgical instrument passing through the sleeve assembly. The sleeve bin and the conversion cap work together to ensure the stability of pneumoperitoneum. The sleeve bin and the conversion cap are usually connected and locked by a locking mechanism. When the sleeve bin and the conversion cap are connected, the connection between the sleeve bin and the conversion cap needs to ensure good sealing. At the same time, the locking mechanism is generally required to realize the separation of the sleeve bin and the conversion cap during surgery. After the conversion cap is removed, it is more convenient to pull out the medical device that clamps the tissue sample, and reduce the damage of the tissue sample during the removal process.

[0004] At present, the existing rotary locking mechanism usually needs to use a spring to realize the detachable connection between the conversion cap and the sleeve magazine. This kind of locking mechanism has many parts, complex structure, and high assembly process requirements. In addition, the locking mechanism may get stuck during the process of rotation, closing or disassembly, thus failing to ensure the smooth progress of abdominal surgery. Therefore, the utility model proposes a flip-cover non-disassembly puncture device to solve the above technical problems. Summary of the invention

[0005] The purpose of the utility model is to overcome the defects in the prior art and provide a flip-cover non-disassembly puncture device, by hingedly connecting one side of the sealing cover assembly to the proximal side of the puncture sleeve assembly, and the other side is detachably buckled with the other side of the proximal end of the puncture sleeve assembly through a locking assembly. After the puncture rod assembly is pulled out during surgery and other medical devices are connected, it is only necessary to unlock the locking assembly and then flip the sealing assembly to open it. The operation is convenient, and the sealing cover assembly and the proximal end of the puncture sleeve assembly are effectively prevented from being stuck, thereby ensuring the smoothness of the surgical operation process. The overall structural design is simple, the preparation and implementation feasibility is high, and the practicability is strong.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is to design a flip-cover non-detachable puncture device, including a puncture rod assembly, a sealing cover assembly and a puncture sleeve assembly, one side of the sealing cover assembly is hingedly mounted on the proximal side of the puncture sleeve assembly through a hinge assembly, and a locking assembly for detachably snapping the two together is provided between the other side of the sealing cover assembly and the other side of the proximal end of the puncture sleeve assembly, and the distal end of the puncture rod assembly passes through the sealing cover assembly and the puncture sleeve assembly in sequence and extends to the distal outside of the puncture sleeve assembly.

[0007] The utility model discloses a flip-cover non-disassembly type puncture device, in which one side of the sealing cover assembly is hinged to the proximal end side of the puncture sleeve assembly, and the other side is detachably buckled and connected to the other side of the proximal end of the puncture sleeve assembly through a locking assembly. When the puncture rod assembly is pulled out during surgery and other medical devices are connected, it is only necessary to unlock the locking assembly and then flip the sealing assembly to open it. The operation is convenient, and the sealing cover assembly and the proximal end of the puncture sleeve assembly are effectively prevented from being stuck, thereby ensuring the smoothness of the surgical operation process. The overall structural design is simple, the preparation and implementation feasibility is high, and the practicability is strong.

[0008] The preferred technical solution is that an ear block 1 is provided on one of the outer peripheral side of the sealing cover assembly and the proximal outer peripheral side of the puncture sleeve assembly, and an ear block 2 is correspondingly provided on the other of the outer peripheral side of the sealing cover assembly and the proximal outer peripheral side of the puncture sleeve assembly, the free end of the ear block 1 is provided with two ear columns parallel and spaced apart, and the two ear columns are respectively provided with a through hole 1, and the free end of the ear block 2 is provided with a pin shaft, and the two ends of the pin shaft respectively extend to the outside of the two side surfaces of the ear block 2, the pin shaft on the ear block 2 is rotatably clamped and installed in the gap between the two ear columns on the ear block 1, and the two ends of the pin shaft are respectively rotatably plugged and installed in the through hole 1 on the corresponding ear column, and the ear block 1, the ear column, the through hole 1, the ear block 2 and the pin shaft constitute the hinge assembly. The hinged assembly has a simple structural design, and both the ear block one and the ear block two can be arranged on the outer peripheral side of the sealing cover assembly and the proximal end of the puncture sleeve assembly, so that the positions of the ear block one and the ear block two can be flexibly selected according to the difficulty of the tooling design, so as to ensure that the flip-cover non-disassembly puncture device of the utility model can be smoothly prepared and implemented.

[0009] A further preferred technical solution is that the locking assembly includes a snap-on portion and a locking portion, the snap-on portion includes a hook and an unlocking mechanism for controlling the unlocking of the hook and the locking portion, the locking portion is one of a block, a slot or a hole, the snap-on portion is located on one of the proximal ends of the sealing cover assembly and the puncture sleeve assembly, and the locking portion is correspondingly located on the other of the proximal ends of the sealing cover assembly and the puncture sleeve assembly.

[0010] The lock assembly is constructed by a process that allows the lock to be moved along a path that is adapted to move along the length of the locking cam, the lock being adapted to move along the length of the locking cam when the lock is in motion. The locking assembly has a simple structural design, strong universality, and high feasibility in preparation and implementation; the snap-fitting part and the locking part have good adaptation stability, ensuring that the sealing assembly and the proximal end of the puncture sleeve assembly have good overall stability after being snap-fitted and locked.

[0011] A further preferred technical solution is that the sealing cover assembly includes an upper cover and a lower cover, a sealing sleeve extending downward to the inner side of the central hole of the lower cover is provided inside the central hole of the upper cover, the clamping portion and the ear block 1 are correspondingly located at two ends of the same diameter of the lower end surface of the lower cover, and the locking portion and the ear block 2 are correspondingly located at two ends of the same diameter of the proximal upper end surface of the puncture sleeve assembly. The hinge assembly and the locking assembly are correspondingly located at two ends of the same diameter of the cross section of the sealing assembly to ensure the convenience of flipping the sealing assembly to open and close.

[0012] A further preferred technical solution is that the upper end surface of the upper cover is circumferentially spaced with a plurality of snap-in holes, the puncture sleeve assembly comprises a puncture sleeve seat, a sleeve, an air injection valve and an air injection switch, the puncture sleeve seat is fixedly arranged at the distal end of the sleeve, and the air injection valve and the air injection switch are fixedly arranged on the outer peripheral side of the puncture sleeve seat; the puncture rod assembly comprises a puncture rod seat and a puncture rod, the puncture rod seat is fixedly arranged at the distal end of the puncture rod, a plurality of buckles are circumferentially spaced at the lower end of the puncture rod seat, the puncture rod seat is snap-connected with a plurality of snap-in holes on the upper end of the sealing cover assembly through a plurality of the buckles, a plurality of unlocking mechanisms 2 for unlocking the buckles and the corresponding snap-in holes are arranged inside the puncture rod seat, and a plurality of unlocking buttons connected with the unlocking mechanisms 2 in a one-to-one correspondence are arranged circumferentially at the outer peripheral side of the puncture rod seat.

[0013] A further preferred technical solution is that the pressing block is an arc-shaped plate body adapted to the outer side of the lower cover, and an anti-slip structure is provided on the outer convex arc surface of the pressing block. The pressing block has good adaptability to the outer side of the lower cover, ensuring that the pressing block can be pressed to fit the outer side of the lower cover, thereby ensuring that the hook and the buckle part are completely separated, and ensuring that the sealing cover assembly can be smoothly flipped open.

[0014] A further preferred technical solution is that the outer side of the sliding shaft is provided with at least one plane along its length direction, and the cross-sectional profile of the second through hole is consistent with the cross-sectional outer profile of the sliding shaft. The outer side of the sliding shaft is provided with a plane structure, and the second through hole is adapted to the sliding shaft, thereby effectively preventing the sliding shaft from rotating inside the second through hole, ensuring that the position of the hook body remains unchanged and the clamping accuracy with the buckle portion is high.

[0015] The advantages and beneficial effects of the utility model are:

[0016] 1. The utility model is a flip-cover non-disassembly type puncture device, in which one side of the sealing cover assembly is hinged to the proximal side of the puncture sleeve assembly, and the other side is detachably buckled with the other side of the proximal end of the puncture sleeve assembly through a locking assembly. After the puncture rod assembly is pulled out during surgery and other medical devices are connected, it is only necessary to unlock the locking assembly and then flip the sealing assembly to open it. The operation is convenient, and the sealing cover assembly and the proximal end of the puncture sleeve assembly are effectively prevented from getting stuck, thereby ensuring the smoothness of the surgical operation process. The overall structural design is simple, the preparation and implementation feasibility is high, and the practicability is strong.

[0017] 2. The structure of the hinged assembly is simple in design, and both the ear block 1 and the ear block 2 can be arranged on the outer peripheral side of the sealing cover assembly and the proximal end of the puncture sleeve assembly, so that the positions of the ear block 1 and the ear block 2 can be flexibly selected according to the difficulty of the tooling design, so as to ensure that the flip-cover non-disassembly puncture device of the utility model can be smoothly prepared and implemented.

[0018] 3. The lock assembly has a simple structural design, strong universality, and high feasibility of preparation and implementation; the adaptability of the clamping part and the lock part is good, ensuring that the sealing assembly and the proximal end of the puncture sleeve assembly have good overall stability after being clamped and locked. The hinge assembly and the lock assembly are located at the two ends of the same diameter of the cross section of the sealing assembly to ensure the convenience of flipping and opening the sealing assembly.

[0019] 4. The pressing block is an arc-shaped plate body that matches the outer side of the lower cover, and an anti-slip structure is provided on the outer convex arc surface of the pressing block. The pressing block has good adaptability to the outer side of the lower cover, ensuring that the pressing block can be pressed to fit the outer side of the lower cover, thereby ensuring that the hook and the buckle are completely separated, and ensuring that the sealing cover assembly can be smoothly flipped open.

[0020] 5. A plane structure is provided on the outer side of the sliding shaft, and the second through hole is adapted to the sliding shaft, thereby effectively preventing the sliding shaft from rotating inside the second through hole, ensuring that the position of the hook body remains unchanged and the clamping accuracy with the buckle part is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of a flip-cover non-detachable trocar of the utility model;

[0022] Figure 2 This is a schematic diagram of the disassembly structure of a flip-cover non-disassembly type puncture device of the utility model;

[0023] Figure 3 It is a three-dimensional image of the lower cover from an upward angle;

[0024] Figure 4 It is the assembly relationship diagram of the pressing block, the sliding shaft, the hook and the spring;

[0025] Figure 5 is a bottom-up perspective view of the sealing cover assembly;

[0026] Figure 6 is a top-down perspective view of the sealing cover assembly;

[0027] Figure 7 is a stereoscopic view of a puncture cannula assembly;

[0028] Figure 8 yes Figure 7 A partial enlarged view of point H in the middle.

[0029] In the figure: 1, puncture rod assembly; 2, sealing cover assembly; 3, puncture sleeve assembly; 4, hinge assembly; 5, lock assembly; 1-1, puncture rod seat; 1-2, puncture rod; 1-3, buckle; 1-4, unlocking button; 2-1, upper cover; 2-1a, sealing sleeve; 2-1b, snap hole; 2-2, lower cover; 3-1, puncture sleeve seat; 3-2, sleeve; 3-3, gas injection valve ; 3-4, gas injection switch; 4-1, ear block one; 4-2, ear column; 4-2a, through hole one; 4-3, ear block two; 4-4, pin shaft; 5-1, lock mounting groove; 5-1a, through hole two; 5-2, pressing block; 5-2a, anti-slip structure; 5-3, sliding shaft; 5-3a, plane; 5-4, hook; 5-4a, hook body; 5-5, spring; 5-6, block. DETAILED DESCRIPTION

[0030] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0031] Example

[0032] like Figures 1 to 8 As shown, the utility model is a flip-cover non-detachable puncture device, comprising a puncture rod assembly 1, a sealing cover assembly 2 and a puncture sleeve assembly 3, one side of the sealing cover assembly 2 is hingedly mounted on the proximal side of the puncture sleeve assembly 3 through a hinge assembly 4, and a lock assembly 5 for detachably snapping the two together is provided between the other side of the sealing cover assembly 2 and the other side of the proximal end of the puncture sleeve assembly 3, and the distal end of the puncture rod assembly 1 passes through the sealing cover assembly 2 and the puncture sleeve assembly 3 in sequence and extends to the distal outside of the puncture sleeve assembly 3.

[0033] Preferably, an ear block 4-2 is provided on one of the outer peripheral side of the sealing cover assembly 2 and the proximal outer peripheral side of the puncture sleeve assembly 3, and an ear block 4-3 is correspondingly provided on the other of the outer peripheral side of the sealing cover assembly 2 and the proximal outer peripheral side of the puncture sleeve assembly 3. Two ear posts 4-2 are parallelly and spaced apart at the free end of the ear block 4-2, and a through hole 4-2a is correspondingly provided on the two ear posts 4-2, and a pin is provided at the free end of the ear block 4-3. 4-4, the two ends of the pin shaft 4-4 extend to the outside of the two side surfaces of the ear block 4-3 respectively, the pin shaft 4-4 on the ear block 4-3 is rotatably snap-fitted and installed in the gap between the two ear columns 4-2 on the ear block 1 4-2, and the two ends of the pin shaft 4-4 are rotatably plugged and installed in the through hole 1 4-2a on the corresponding ear column 4-2 respectively, the ear block 1 4-2, the ear column 4-2, the through hole 1 4-2a, the ear block 4-3 and the pin shaft 4-4 constitute the hinge assembly 4.

[0034] Further preferably, the locking assembly 5 includes a snap-on portion and a locking portion, the snap-on portion includes a hook 5-4 and an unlocking mechanism for controlling the unlocking of the hook 5-4 and the locking portion, the locking portion is one of a card block 5-6, a card slot or a card hole, the snap-on portion is located on one of the proximal ends of the sealing cover assembly 2 and the puncture sleeve assembly 3, and the locking portion is correspondingly located on the other of the proximal ends of the sealing cover assembly 2 and the puncture sleeve assembly 3.

[0035] Further preferably, the clamping portion includes a lock mounting groove 5-1, a pressing block 5-2 and a sliding shaft 5-3, one end of the hook 5-4 is provided with a mounting hole, and the other end is provided with a hook body 5-4a, a group of opposite side walls of the lock mounting groove 5-1 are respectively provided with through holes 5-1a, and both ends of the sliding shaft 5-3 respectively penetrate the through holes 5-1a on a group of opposite side walls of the lock mounting groove 5-1 and extend to the outside of the lock mounting groove 5-1, the pressing block 5-2 is fixed at one end of the sliding shaft 5-3, and the hook 5-4 is far One end of the hook body 5-4a is fitted into the end of the sliding shaft 5-3 close to the pressing block 5-2 through an interference fit in the mounting hole, and the end of the hook 5-4 away from the hook body 5-4a is correspondingly located inside the lock mounting groove 5-1. A spring 5-5 is also sleeved on the sliding shaft 5-3. One end of the spring 5-5 abuts against the hook 5-4, and the other end abuts against the inner wall of the lock mounting groove 5-1 away from the pressing block 5-2. The lock mounting groove 5-1, the pressing block 5-2, the sliding shaft 5-3 and the spring 5-5 constitute the unlocking mechanism 1.

[0036] Further preferably, the sealing cover assembly 2 includes an upper cover 2-1 and a lower cover 2-2, a sealing sleeve 2-1a is provided inside the center hole of the upper cover 2-1 and extends downward to the center hole of the lower cover 2-2, the clamping portion and the ear block 1 4-2 are correspondingly located at two ends of the same diameter on the lower end surface of the lower cover 2-2, and the locking portion and the ear block 2 4-3 are correspondingly located at two ends of the same diameter on the proximal upper end surface of the puncture sleeve assembly 3.

[0037] Further preferably, the upper end surface of the upper cover 2-1 is provided with a plurality of snap-in holes 2-1b at intervals in an annular direction, the puncture sleeve assembly 3 comprises a puncture sleeve seat 3-1, a sleeve 3-2, an air injection valve 3-3 and an air injection switch 3-4, the puncture sleeve seat 3-1 is fixedly arranged at the distal end of the sleeve 3-2, the air injection valve 3-3 and the air injection switch 3-4 are fixedly arranged on the outer peripheral side surface of the puncture sleeve seat 3-1; the puncture rod assembly 1 comprises a puncture rod seat 1-1 and a puncture rod 1-2, the puncture rod seat 1-1 is fixedly arranged At the distal end of the puncture rod 1-2, a plurality of buckles 1-3 are circumferentially spaced apart at the lower end of the puncture rod seat 1-1. The puncture rod seat 1-1 is buckled and connected with a plurality of snap holes 2-1b at the upper end of the sealing cover assembly 2 through the buckles 1-3 in a one-to-one correspondence. The puncture rod seat 1-1 is internally provided with a plurality of unlocking mechanisms 2 for unlocking the buckles 1-3 and the corresponding snap holes 2-1b. A plurality of unlocking buttons 1-4 connected with the unlocking mechanisms 2 in a one-to-one correspondence are circumferentially spaced apart on the outer peripheral side of the puncture rod seat 1-1.

[0038] Further preferably, the pressing block 5-2 is an arc-shaped plate body adapted to the outer side of the lower cover 2-2, and an anti-slip structure 5-2a is provided on the outer convex arc surface of the pressing block 5-2. The anti-slip structure can be an anti-slip convex rib, an anti-slip convex point or the like.

[0039] Further preferably, the outer side surface of the sliding shaft 5-3 is provided with at least one plane 5-3a along its length direction, and the cross-sectional profile of the second through hole 5-1a is consistent with the cross-sectional outer profile shape of the sliding shaft 5-3.

[0040] The use principle of the utility model of a flip cover non-disassembly type puncture device:

[0041] When puncturing the patient's abdomen, the puncture rod assembly 1 is connected to the sealing cover assembly 2 and the puncture sleeve assembly 3, and the buckle 1-3 on the puncture rod seat 1-1 is connected with the buckle hole 2-1b on the sealing cover assembly 2 in a one-to-one corresponding buckle connection. After establishing pneumoperitoneum, the puncture device is inserted into the patient's abdominal cavity; the operator holds the sealing cover assembly 2 and the puncture sleeve assembly 3 with one hand, and holds the unlocking button 1-4 on the puncture rod seat 1-1 with the other hand and squeezes it into the inside of the puncture rod seat 1-1. At this time, the buckle 1 -3 is disengaged from the snap-in hole 2-1b on the sealing cover assembly 2, and then the puncture rod assembly 1 is pulled out from the sealing cover assembly 2 and the puncture sleeve assembly 3; the operator holds the puncture sleeve assembly 3 with one hand and presses the pressing block 5-2 on the sealing cover assembly 2 with the other hand to disengage the hook 5-4 from the buckling part (here is the clamping block 5-6), and flips the sealing cover assembly 2 open; then other medical devices can be inserted into the puncture sleeve assembly 3 for subsequent surgical operations.

[0042] The utility model discloses a flip-cover non-disassembly type puncture device, in which one side of the sealing cover assembly is hinged to the proximal end side of the puncture sleeve assembly, and the other side is detachably buckled and connected to the other side of the proximal end of the puncture sleeve assembly through a locking assembly. When the puncture rod assembly is pulled out during surgery and other medical devices are connected, it is only necessary to unlock the locking assembly and then flip the sealing assembly to open it. The operation is convenient, and the sealing cover assembly and the proximal end of the puncture sleeve assembly are effectively prevented from being stuck, thereby ensuring the smoothness of the surgical operation process. The overall structural design is simple, the preparation and implementation feasibility is high, and the practicability is strong.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A flip-cover non-disassembly type trocar, characterized in that: The invention comprises a puncture rod assembly (1), a sealing cover assembly (2) and a puncture sleeve assembly (3); one side of the sealing cover assembly (2) is hingedly mounted on the proximal side of the puncture sleeve assembly (3) through a hinge assembly (4); a lock assembly (5) is provided between the other side of the sealing cover assembly (2) and the other side of the proximal end of the puncture sleeve assembly (3) for detachably snapping the two together; the distal end of the puncture rod assembly (1) passes through the sealing cover assembly (2) and the puncture sleeve assembly (3) in sequence and extends to the outer side of the distal end of the puncture sleeve assembly (3).

2. The flip-cover non-detachable trocar according to claim 1, characterized in that: An ear block 1 (4-1) is provided on one of the outer peripheral side of the sealing cover assembly (2) and the proximal outer peripheral side of the puncture sleeve assembly (3), and an ear block 2 (4-3) is correspondingly provided on the other of the outer peripheral side of the sealing cover assembly (2) and the proximal outer peripheral side of the puncture sleeve assembly (3). Two ear posts (4-2) are parallelly and spaced apart at the free end of the ear block 1 (4-1), and a through hole 1 (4-2a) is correspondingly provided on the two ear posts (4-2). A pin shaft (4-4) is provided at the free end of the ear block 2 (4-3). The two ends of the pin shaft (4-4) extend to the outside of the two side surfaces of the second ear block (4-3), the pin shaft (4-4) on the second ear block (4-3) is rotatably mounted in the gap between the two ear posts (4-2) on the first ear block (4-1), and the two ends of the pin shaft (4-4) are rotatably inserted and mounted in the inside of the through hole 1 (4-2a) on the corresponding ear post (4-2), the ear block 1 (4-1), the ear post (4-2), the through hole 1 (4-2a), the second ear block (4-3) and the pin shaft (4-4) constitute the hinge assembly (4).

3. The flip-cover non-detachable trocar as claimed in claim 2, characterized in that: The locking assembly (5) comprises a snap-fitting portion and a locking portion, the snap-fitting portion comprises a hook (5-4) and an unlocking mechanism for controlling the unlocking of the hook (5-4) and the locking portion, the locking portion is a card block (5-6), a card slot or a card hole, the snap-fitting portion is located on one of the proximal ends of the sealing cover assembly (2) and the puncture sleeve assembly (3), and the locking portion is correspondingly located on the other of the proximal ends of the sealing cover assembly (2) and the puncture sleeve assembly (3).

4. The flip-cover non-detachable trocar as claimed in claim 3, characterized in that: The clamping part comprises a lock buckle installation groove (5-1), a pressing block (5-2) and a sliding shaft (5-3); one end of the clamping hook (5-4) is provided with a mounting hole and the other end is provided with a hook body (5-4a); a group of opposite side walls of the lock buckle installation groove (5-1) are respectively provided with two through holes (5-1a); two ends of the sliding shaft (5-3) respectively penetrate through the two through holes (5-1a) on a group of opposite side walls of the lock buckle installation groove (5-1) and extend to the outside of the lock buckle installation groove (5-1); the pressing block (5-2) is fixedly arranged at one end of the sliding shaft (5-3); the clamping hook (5-4) is away from the hook body (5-4a); One end of the locking member (5-4a) is inserted into the end of the sliding shaft (5-3) close to the pressing block (5-2) through an interference fit in the mounting hole, and the end of the hook (5-4) away from the hook body (5-4a) is correspondingly located inside the lock buckle mounting groove (5-1), and a spring (5-5) is also sleeved on the sliding shaft (5-3), one end of the spring (5-5) abuts against the hook (5-4), and the other end abuts against the inner side wall of the lock buckle mounting groove (5-1) away from the pressing block (5-2), and the lock buckle mounting groove (5-1), the pressing block (5-2), the sliding shaft (5-3) and the spring (5-5) constitute the unlocking mechanism 1.

5. The flip-cover non-detachable trocar as claimed in claim 4, characterized in that: The sealing cover assembly (2) comprises an upper cover (2-1) and a lower cover (2-2); a sealing sleeve (2-1a) is provided inside the center hole of the upper cover (2-1) and extends downward to the center hole of the lower cover (2-2); the clamping portion and the ear block 1 (4-1) are correspondingly located at two ends of the same diameter of the lower end surface of the lower cover (2-2); and the locking portion and the ear block 2 (4-3) are correspondingly located at two ends of the same diameter of the proximal upper end surface of the puncture sleeve assembly (3).

6. The flip-cover non-detachable trocar according to claim 5, characterized in that: The upper end surface of the upper cover (2-1) is provided with a plurality of snap-in holes (2-1b) at intervals in an annular direction. The puncture sleeve assembly (3) comprises a puncture sleeve seat (3-1), a sleeve (3-2), an air injection valve (3-3) and an air injection switch (3-4). The puncture sleeve seat (3-1) is fixedly arranged at the distal end of the sleeve (3-2). The air injection valve (3-3) and the air injection switch (3-4) are fixedly arranged on the outer peripheral side surface of the puncture sleeve seat (3-1). The puncture rod assembly (1) comprises a puncture rod seat (1-1) and a puncture rod (1-2). The puncture rod seat (1-1) is fixedly arranged at the distal end of the sleeve (3-2). The air injection valve (3-3) and the air injection switch (3-4) are fixedly arranged on the outer peripheral side surface of the puncture sleeve seat (3-1). A plurality of buckles (1-3) are arranged at the distal end of the puncture rod (1-2), and the lower end of the puncture rod seat (1-1) is provided with a plurality of buckles (1-3) at intervals in an annular direction. The puncture rod seat (1-1) is buckled and connected with a plurality of snap holes (2-1b) at the upper end of the sealing cover assembly (2) in a one-to-one correspondence through the plurality of buckles (1-3). The puncture rod seat (1-1) is provided with a plurality of unlocking mechanisms 2 for unlocking the buckles (1-3) and the corresponding snap holes (2-1b). The outer peripheral side of the puncture rod seat (1-1) is provided with a plurality of unlocking buttons (1-4) at intervals in an annular direction and connected with the unlocking mechanisms 2 in a one-to-one correspondence.

7. The flip-cover non-detachable trocar according to claim 6, characterized in that: The pressing block (5-2) is an arc-shaped plate body adapted to the outer side surface of the lower cover (2-2), and an anti-slip structure (5-2a) is provided on the outer convex arc surface of the pressing block (5-2).

8. The flip-cover non-detachable trocar according to claim 7, characterized in that: The outer side surface of the sliding shaft (5-3) is provided with at least one plane (5-3a) along its length direction, and the cross-sectional profile of the second through hole (5-1a) is consistent with the cross-sectional outer profile of the sliding shaft (5-3).

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