Passage device for nasal endoscopic surgery

Abstract

The invention relates to the technical field of medical equipment, and discloses a transnasal endoscopic surgery channel device which comprises an upper shell medical equipment technology and a lower shell medical equipment technology, and a middle release position mechanism is arranged between the upper shell medical equipment technology and the lower shell medical equipment technology. The upper shell medical equipment technology and the lower shell medical equipment technology are both used for providing installation positions, the moving mechanism medical equipment technology is arranged between the upper shell medical equipment technology and the lower shell medical equipment technology, and the positioning mechanism medical equipment technology is arranged in the upper shell medical equipment technology. The retreating and feeding of the internal thread piece and the outer sheath tube are controlled through the rotation of the middle release position piece, so that the outer sheath tube can be controlled to reset when the sheath net does not completely leave from the interior of the outer sheath tube, the sheath net is sleeved with the outer sheath tube again, then the sheath net can be recycled, an error space can be reserved for an operator, and the safety of the operator is improved. The error-tolerant rate of an operator is improved, and the operation difficulty is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a transnasal endoscopic surgical channel device. Background Technology

[0002] Currently, transnasal skull base endoscopic surgery is widely performed in neurosurgery and otolaryngology. The ideal surgical approach for skull base surgery is one that allows for clear identification of important nerve tissues while ensuring tumor resection or structural repair, and, if necessary, expands the resection area. This approach should preserve nerves and masticatory function, minimize facial scarring, avoid facial deformities, and provide conditions for reconstruction and repair. The transnasal endoscopic approach largely meets these requirements. The nasal endoscope utilizes the natural cavities of the nasal cavity and sinuses to directly access various structures at the skull base, without leaving any incisions in the head and face, and without needing to move the maxillofacial bone structures. Currently available transnasal endoscopic surgery support cannula instruments consist of a "gun"-type delivery system and a protective net. The protective net is compressed into the front channel of the delivery system. During transnasal endoscopic surgery, repeatedly pulling the trigger position gradually withdraws the outer tube binding the protective net from the gun channel. After complete release, pulling the binding suture at the rear of the delivery system releases the support tip, allowing the delivery device to exit, thus successfully placing the protective net.

[0003] Existing transnasal endoscopic surgical access devices can partially solve the problem of damage to the nasal lining or cilia during transnasal surgery. However, during operation, the sheath mesh delivery system still has issues such as non-retrievable release, resulting in a lack of margin for error and increased surgical difficulty. Additionally, the sheath mesh has weak support and cannot open up the internal nasal structure, leading to limited space. Furthermore, the delivery system has low release efficiency and cannot adjust the release speed according to the surgeon's real-time situation, increasing surgical time. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a transnasal endoscopic surgical channel device, which solves the problems of insufficient operator tolerance, weak support of the sheath mesh, low device release efficiency, and increased surgical time in the use of existing transnasal endoscopic surgical channel devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a transnasal endoscopic surgical channel device, comprising an upper shell medical device and a lower shell medical device, wherein a middle release mechanism is provided between the upper shell medical device and the lower shell medical device, both the upper shell medical device and the lower shell medical device are used to provide an installation position, a moving mechanism medical device is provided between the upper shell medical device and the lower shell medical device, a positioning mechanism medical device is provided inside the upper shell medical device, the positioning mechanism medical device is used to limit and support the sheath net medical device, the sheath net medical device is provided inside the moving mechanism medical device, and the middle release mechanism medical device is used to retract and extend the sheath net medical device.

[0006] Preferably, the release mechanism medical device technology includes a release element medical device technology, both ends of the release element medical device technology are fixedly connected to a connecting sleeve medical device technology, and the side of the connecting sleeve medical device technology away from the release element medical device technology is fixedly connected to a plurality of claw medical device technology, the upper shell medical device technology has a first locking ring groove medical device technology inside, and the lower shell medical device technology has a second locking ring groove medical device technology inside.

[0007] Preferably, the mobile mechanism medical device technology includes an internally threaded component medical device technology. The external part of the internally threaded component medical device technology is disposed between the interior of the upper shell medical device technology and the lower shell medical device technology. Limiting grooves are formed on both sides of the internally threaded component medical device technology. An external sheath is fixedly connected to one end of the internally threaded component medical device technology located inside the lower shell medical device technology. Limiting connecting rods are fixedly connected to both sides of the interior of the upper shell medical device technology. The external parts of the two limiting connecting rods are slidably connected to the interior of the limiting grooves.

[0008] Preferably, the positioning mechanism medical device technology includes a support rod medical device technology, one end of which is fixedly connected to the inside of one end of the upper shell medical device technology, and the other end of which is fixedly connected to a conical tip medical device technology. A plug medical device technology is fixedly connected to the outside of the support rod medical device technology, and the sheath mesh medical device technology is disposed between the conical tip medical device technology and the plug medical device technology.

[0009] Preferably, the external fixed connection of the claw medical device technology includes multiple protruding medical device technologies, and the internal of the release component medical device technology is provided with external threads.

[0010] Preferably, the external part of the internally threaded medical device technology has an internal thread, and the external thread of the internally threaded medical device technology is connected to the interior of the release position medical device technology.

[0011] Preferably, the two connecting sleeve medical device technologies are rotatably connected to the interior of the upper shell medical device technology and the lower shell medical device technology, respectively, and the multiple claw medical device technologies on both sides are respectively disposed inside the first and second claw medical device technologies.

[0012] Preferably, the plug medical device technology is slidably connected inside the outer sheath medical device technology, and the outer part of the conical tip medical device technology near the plug medical device technology is disposed inside the outer sheath medical device technology.

[0013] Preferably, the sheath mesh medical device technology is disposed inside the outer sheath medical device technology, and the middle part of the internal threaded component medical device technology is slidably connected to the outside of the support rod medical device technology.

[0014] This invention provides a transnasal endoscopic surgical access device. It has the following beneficial effects:

[0015] 1. This invention controls the exit and feed of the internal threaded part and the outer sheath tube by rotating the release position component. This allows the outer sheath tube to be reset before the sheath is completely removed from the inside of the outer sheath tube, so that it can be put back on the outside of the sheath tube. This enables the sheath tube to be retrieved. Therefore, it provides room for error for the operator, increases the operator's error tolerance, and reduces the difficulty of the operation.

[0016] 2. This invention uses high-strength nickel-titanium wire, which is then heat-treated and shaped under special gas protection to increase the support of the sheath mesh. This allows for the expansion of the nasal cavity space, providing sufficient surgical space. Furthermore, the wide and long pitch of the central release component and the internal thread component improves the release efficiency. The release speed of the sheath mesh can be adjusted according to the doctor's real-time situation based on the speed of turning the central release component, thus reducing surgical time. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal thread component in this invention;

[0019] Figure 3 This is a schematic diagram of the limiting slide groove in the present invention;

[0020] Figure 4 This is a schematic diagram of the chuck structure in this invention;

[0021] Figure 5 This is a schematic diagram of the structure of the sheath mesh in this invention;

[0022] Figure 6 This is a schematic diagram of the conical tip structure in this invention;

[0023] Figure 7 This is a schematic diagram of the support rod in this invention;

[0024] Figure 8 This is a schematic diagram of the release element in this invention;

[0025] Figure 9 This is a schematic diagram of the second locking annular groove in the present invention;

[0026] Figure 10 This is a schematic diagram of the structure of the locking ring groove in this invention.

[0027] The components include: 1. Upper shell; 2. Lower shell; 3. Middle release mechanism; 301. Middle release component; 302. Connecting sleeve; 303. Claw; 304. Clawing annular groove one; 305. Clawing annular groove two; 306. Protrusion; 4. Moving mechanism; 401. Internal threaded component; 402. Limiting slide groove; 403. Outer sheath tube; 404. Limiting connecting rod; 5. Positioning mechanism; 501. Support rod; 502. Plug; 503. Conical tip; 6. Protective mesh. Detailed Implementation

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see the appendix Figure 1 - Appendix Figure 10This invention provides a transnasal endoscopic surgical access device, including an upper shell 1 and a lower shell 2. A middle release mechanism 3 is provided between the upper shell 1 and the lower shell 2. The upper shell 1 and the lower shell 2 are integrally injection molded. Both the upper shell 1 and the lower shell 2 are used to provide installation positions. A moving mechanism 4 is provided inside the upper shell 1 and the lower shell 2. When the middle release mechanism 3 rotates, it can drive the moving mechanism 4 to move. A positioning mechanism 5 is provided inside the upper shell 1. The positioning mechanism 5 is used to limit and support the sheath mesh 6. The moving mechanism 4 is located inside... A protective mesh 6 is provided, and a release mechanism 3 is used to retract the protective mesh 6. The protective mesh 6 is woven and wound from rigid plastic wire, nickel-titanium wire, or stainless steel wire, and then heat-treated and shaped under special gas protection. The inside or outside of the mesh of the protective mesh 6 is coated with an elastic waterproof material, which is made of PET, TPU, EPTFE, or silicone film. This gives the protective mesh 6 good shrinkage and self-expansion properties. After it expands, it can prevent intracranial blood flow or intracranial secretions from entering the surgical area, thereby avoiding affecting the surgical field of vision.

[0030] The middle release mechanism 3 includes a middle release component 301. Connecting sleeves 302 are fixedly connected to both ends of the middle release component 301. Multiple claws 303 are fixedly connected to the side of the connecting sleeves 302 away from the middle release component 301. The middle release component 301, connecting sleeves 302, and claws 303 are integrally injection molded. A first locking annular groove 304 is formed inside the upper shell 1, and a second locking annular groove 305 is formed inside the lower shell 2. Multiple protrusions 306 are fixedly connected to the outside of the claws 303, facilitating operation. The release position component 301 is rotated and has an external thread inside. The two connecting sleeves 302 are rotatably connected to the interior of the upper shell 1 and the lower shell 2 respectively. Multiple claws 303 on both sides are respectively set inside the first locking ring groove 304 and the second locking ring groove 305. After the claws 303 are set inside the first locking ring groove 304 and the second locking ring groove 305, the release position component 301 can be installed between the upper shell 1 and the lower shell 2 by using the claws 303, and can rotate between the upper shell 1 and the lower shell 2.

[0031] The moving mechanism 4 includes an internally threaded component 401, which can move under the rotation of the release position component 301. The external part of the internally threaded component 401 is located between the interior of the upper shell 1 and the lower shell 2. Limiting grooves 402 are formed on both sides of the internally threaded component 401. An outer sheath tube 403 is fixedly connected to one end of the internally threaded component 401 inside the lower shell 2. The outer sheath tube 403 is composed of an inner layer of PTFE, a middle layer of stainless steel metal spring or braided material, and an outer layer of polyether block polyamide material. It can adapt to a certain degree of bending, making it convenient to enter the lesion area with a small angle. The internal sides of the upper shell 1 are fixedly connected. The fixed connection has a limiting connecting rod 404. The two limiting connecting rods 404 are slidably connected to the inside of the limiting slide groove 402. After the limiting connecting rod 404 slides inside the limiting slide groove 402, it can restrict the rotation of the internal threaded part 401. Thus, when the middle release part 301 rotates, it can prevent the internal threaded part 401 from rotating with the middle release part 301. Thus, when the middle release part 301 rotates, it can drive the internal threaded part 401 to move. The external thread of the internal threaded part 401 is provided, and the external thread of the internal threaded part 401 is connected to the inside of the middle release part 301.

[0032] The positioning mechanism 5 includes a support rod 501, which provides mounting and support. One end of the support rod 501 is fixedly connected to the inside of one end of the upper shell 1, and the other end of the support rod 501 is fixedly connected to a tapered tip 503. The tapered tip 503 is used to assist in entering the nasal cavity, minimizing damage to the nasal cavity during entry; it also prevents the protective net 6 from accidentally dislodging from the outer sheath 403 and prevents the compressed protective net 6 from opening rapidly when the outer sheath 403 is withdrawn. The external fixed connection of 01 is a plug 502. The cooperation between the plug 502 and the conical tip 503 can accommodate the compressed sheath 6. The sheath 6 is located between the conical tip 503 and the plug 502. The plug 502 is slidably connected to the inside of the outer sheath tube 403. The outer part of the conical tip 503 near the plug 502 is located inside the outer sheath tube 403. The sheath 6 is located inside the outer sheath tube 403. The middle part of the internal threaded part 401 is slidably connected to the outside of the support rod 501.

[0033] Working principle: When operating the device, medical personnel hold it on the outside of the upper shell 1 and rotate the protrusion 306. The protrusion 306 can drive the middle release position 301 to rotate. After the middle release position 301 rotates, it can drive the internal threaded part 401 to move into the interior of the upper shell 1, and then drive the outer sheath tube 403 to move towards the upper shell 1. At this time, the support rod 501 and the plug 502 remain stationary. When the outer sheath tube 403 is completely retracted, the sheath net 6 will be completely released without the obstruction of the outer sheath tube 403. After the radial support force of the sheath net 6 is released, it can break free. When the sheath net 6 is not completely freed from the outer sheath tube 403, i.e., it does not break free from the conical tip 503, the reverse protrusion 306 can then drive the middle release part 301 to reverse, thereby driving the internal thread part 401 to move away from the upper shell 1, and then driving the outer sheath tube 403 to move away from the upper shell 1, so that the outer sheath tube 403 can be sleeved on the outside of the sheath net 6 again, and then the reciprocating motion of the outer sheath tube 403 can be used to release and retract the sheath net 6.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transnasal endoscopic surgical access device, comprising an upper shell (1) and a lower shell (2), characterized in that, A middle release mechanism (3) is provided between the upper shell (1) and the lower shell (2). Both the upper shell (1) and the lower shell (2) are used to provide an installation position. A moving mechanism (4) is provided between the interiors of the upper shell (1) and the lower shell (2). A positioning mechanism (5) is provided inside the upper shell (1). The positioning mechanism (5) is used to provide the limiting and support of the protective net (6). The protective net (6) is provided inside the moving mechanism (4). The middle release mechanism (3) is used to retract and extend the protective net (6).

2. The transnasal endoscopic surgical access device according to claim 1, characterized in that, The middle release mechanism (3) includes a middle release component (301), both ends of which are fixedly connected to a connecting sleeve (302). A plurality of claws (303) are fixedly connected to the side of the connecting sleeve (302) away from the middle release component (301). The upper shell (1) has a first locking annular groove (304) inside, and the lower shell (2) has a second locking annular groove (305) inside.

3. The transnasal endoscopic surgical access device according to claim 2, characterized in that, The moving mechanism (4) includes an internal threaded component (401). The external part of the internal threaded component (401) is disposed between the interior of the upper shell (1) and the lower shell (2). Limiting grooves (402) are provided on both sides of the internal threaded component (401). An outer sheath tube (403) is fixedly connected to one end of the internal threaded component (401) located inside the lower shell (2). Limiting connecting rods (404) are fixedly connected to both sides of the interior of the upper shell (1). The external parts of the two limiting connecting rods (404) are slidably connected to the interior of the limiting grooves (402).

4. The transnasal endoscopic surgical access device according to claim 3, characterized in that, The positioning mechanism (5) includes a support rod (501), one end of which is fixedly connected to the inside of one end of the upper shell (1), and the other end of which is fixedly connected to a tapered tip (503). A plug (502) is fixedly connected to the outside of the support rod (501), and the protective mesh (6) is disposed between the tapered tip (503) and the plug (502).

5. A transnasal endoscopic surgical access device according to claim 2, characterized in that, The external fixed connection of the claw (303) has multiple protrusions (306), and the internal release part (301) is provided with external threads.

6. The transnasal endoscopic surgical access device according to claim 3, characterized in that, The internal threaded part (401) has an internal thread on its exterior, and the external thread of the internal threaded part (401) is connected to the interior of the release part (301).

7. A transnasal endoscopic surgical access device according to claim 2, characterized in that, The two connecting sleeves (302) are rotatably connected to the interior of the upper shell (1) and the lower shell (2) respectively, and multiple claws (303) on both sides are respectively disposed inside the first locking annular groove (304) and the second locking annular groove (305).

8. The transnasal endoscopic surgical access device according to claim 4, characterized in that, The plug (502) is slidably connected inside the outer sheath (403), and a section of the outer side of the tapered tip (503) near the plug (502) is disposed inside the outer sheath (403).

9. A transnasal endoscopic surgical access device according to claim 4, characterized in that, The sheath mesh (6) is disposed inside the outer sheath tube (403), and the middle part of the internal threaded part (401) is slidably connected to the outside of the support rod (501).

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