Manipulated curette based on endoscopic maxillary sinus lesion resection in otolaryngology

Abstract

This invention discloses a controllable curette for maxillary sinus lesion resection under endoscopic guidance of an otolaryngologist. The maxillary sinus has a unique anatomy, making lesion resection challenging. Traditional surgical instruments are limited, leading to incomplete lesion removal and requiring more complex procedures, increasing patient suffering and costs. The novel maxillary sinus curette solves this problem. Its curette handle has curved rods connected to both ends, with a curette head control unit at the end of each curved rod. The curette has a suction function to ensure a clear surgical field; the curved rods have a large-angle deformation capability to reach various locations within the maxillary sinus; and the curette head control unit allows the curette head to change angles and directions to meet different cutting or scraping needs. This curette can shorten patient hospitalization and postoperative recovery time, reduce postoperative pain, and has good economic and social benefits.

Description

Technical Field

[0001] This invention relates to the field of otolaryngology curette technology, specifically to a controllable curette for maxillary sinus lesion resection under otolaryngological endoscopy. Background Technology

[0002] In otolaryngological surgery, maxillary sinus resection is a common yet challenging procedure. The unique anatomy of the maxillary sinus presents numerous difficulties for the surgery. Its opening is relatively small, while the internal space is vast, significantly limiting the use of conventional surgical instruments. Traditional instruments for maxillary sinus resection are mostly straight rods, lacking the necessary curvature. During transnasal surgery, they struggle to reach the lesion site, hindering effective removal of the diseased tissue. Even instruments with some curvature often have a fixed angle, preventing flexible adjustment to accommodate the complex internal structure of the maxillary sinus. This makes it difficult to access lesions in concealed locations or at tricky angles, resulting in incomplete resection.

[0003] Furthermore, during surgery, blood, secretions, and other fluids may be produced within the maxillary sinus. These fluids can obscure the surgical field, affecting the surgeon's assessment of the lesion and the precision of their manipulation. Most existing surgical instruments lack suction capabilities, requiring frequent changes of the suction device to clean the surgical field. This not only increases surgical time but may also affect the surgical outcome due to interruptions, and could even lead to residual lesions due to delayed cleaning, posing a risk of requiring a second surgery for the patient.

[0004] For some benign lesions, endoscopic maxillary sinus surgery via the natural ostium of the nasal cavity could shorten operation time, reduce patient trauma, and accelerate recovery. However, due to limitations in surgical instruments, the advantages of this approach cannot be fully utilized. Sometimes, the Collet-McDonnell approach or the pre-lacrimal recess approach must be used, which can cause greater collateral damage, increase patient suffering and medical costs, prolong hospitalization and recovery time, and seriously affect the patient's quality of life and prognosis. Therefore, developing a new maxillary sinus surgical instrument that can overcome the above problems is of great practical significance. Summary of the Invention

[0005] In view of the shortcomings mentioned above, this paper provides a technical solution based on a controllable curette for maxillary sinus lesion resection under endoscopic otolaryngology.

[0006] It includes a scraper handle, with scraper bent rods fixedly connected to both ends of the scraper handle, and scraper head control components provided at the ends of the scraper bent rods away from the scraper handle. The scraper handle includes a stainless steel handle, a negative pressure tube embedded and fixed inside the stainless steel handle, and a branch tube fixed to the side wall of the negative pressure tube and passing through the stainless steel handle. The end of the branch tube away from the negative pressure tube is connected to a negative pressure machine connecting pipe through a connector. The scraper rod includes a bent rod, a negative pressure hose embedded inside the bent rod, and a scraper head located at the end of the bent rod away from the stainless steel handle. The end of the negative pressure hose passes through the scraper head and is connected to an arc-shaped groove. A suction port is provided on the end face of the arc-shaped groove away from the negative pressure hose. The scraper head control component includes four small electromagnets fixed to the end face of the scraper head near the curved rod, and four small electromagnets fixed to the end face of the curved rod near the scraper head. Each of the scraper head and the curved rod has four ball sockets fixed on their adjacent side walls. Ball heads are movably connected inside the adjacent ball sockets. Hollow tubes are fixed to the adjacent ends of the ball heads. Movable columns pass through the adjacent ends of the hollow tubes.

[0007] In the above technical solution, preferably: a groove for embedding and fixing a negative pressure tube is opened at the internal axis position of the stainless steel handle, and both ends of the stainless steel handle have openings for the negative pressure tube to pass through.

[0008] In the above technical solution, preferably: the side wall of the stainless steel handle is provided with a through hole for the branch pipe to pass through, and the end of the negative pressure machine connecting pipe away from the branch pipe is connected to the suction port of the medical negative pressure machine.

[0009] In the above technical solution, preferably: the two ends of the bent rod have a 70-80° bend, and the bent rod is rotate symmetrical about the center point of the stainless steel handle.

[0010] In the above technical solution, preferably, the inside of each bent rod is provided with a strip-shaped groove for the negative pressure hose to pass through.

[0011] In the above technical solution, preferably: the scraper head is in the shape of an elliptical ring, and a round hole for the negative pressure hose to pass through is provided in the center of the end face of the scraper head near the bent rod.

[0012] In the above technical solution, preferably: the arc-shaped grooves are all arc-shaped, and the internal space of the arc-shaped grooves and the negative pressure hose are interconnected, for suctioning the liquid generated during the ear, nose and throat scraping operation.

[0013] In the above technical solution, preferably: the small electromagnets at the head end and the small electromagnets at the tail end are arranged in a ring array, and the small electromagnets at the head end and the small electromagnets at the tail end attract each other after being energized, wherein the power supplies of the small electromagnets at the head end and the small electromagnets at the tail end are connected to an external remote control and a power supply terminal through an integrated wiring harness.

[0014] In the above technical solution, preferably: the interior of each hollow tube is provided with a cavity for the movable column to be inserted through, and the interior of each ball socket is provided with a spherical groove for the ball head to roll.

[0015] In the above technical solution, preferably: a limit block is fixed at the end of the movable column located inside the hollow tube, and a limiting ring is fixed at the port position of the hollow tube to block the limit block, wherein the diameter of the limit block is larger than the aperture of the limiting ring.

[0016] As can be seen from the above technical solution, the controllable curette for maxillary sinus lesion resection under endoscopic otolaryngology provided by the present invention has the following beneficial effects compared with the prior art: The curette handle integrates a negative pressure tube, which connects to a negative pressure machine via a branch tube. This allows for timely fluid aspiration during surgery, ensuring a clear surgical field and facilitating accurate manipulation by the surgeon. The curved curette handle features a specific bending section with rotational symmetry, allowing for flexible access to various locations within the maxillary sinus through large-angle deformation. This overcomes the limitations of small openings and large internal spaces in the maxillary sinus, preventing the need for more complex surgical procedures due to instruments being unable to reach the lesion and reducing collateral damage to the patient. The curette head control unit, through electromagnet attraction and a ball-and-socket structure, allows for multiple angular changes in the curette head, meeting the needs of cutting or scraping in different directions. This improves the thoroughness of lesion removal, shortens surgical time, and consequently reduces patient hospitalization and postoperative recovery time, alleviates patient suffering, and lowers medical costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced and explained below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of the controllable scraper; Figure 2 A schematic diagram of the scraper grip; Figure 3 This is a schematic diagram of a scraper bend member; Figure 4 This is a schematic diagram of a negative pressure suction tube; Figure 5 This is a schematic diagram of the scraper head control mechanism.

[0019] Appendix Figure 1 - Appendix Figure 5 The correspondence between the components is as follows: 1. Scraper handle; 1-1. Stainless steel handle; 1-2. Negative pressure pipe; 1-3. Groove; 1-4. Branch pipe; 1-5. Negative pressure machine connecting pipe; 2. Scraper bent rod; 2-1. Bent rod; 2-2. Strip groove; 2-3. Scraper head; 2-4. Negative pressure hose; 2-5. Arc groove; 2-6. Suction port; 3. Scraper head control components; 3-1. Small electromagnet at the head end; 3-2. Small electromagnet at the tail end; 3-3. Ball socket; 3-4. Ball head; 3-5. Hollow inner tube; 3-6. Movable column. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described below 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. In order to provide a clearer explanation and description of the technical solutions and implementation methods of the present invention, the following describes specific embodiments that implement the preferred technical solutions of the present invention.

[0021] A controllable curette for endoscopic maxillary sinus lesion resection under otolaryngology is disclosed. The controllable curette comprises a curette handle 1, a curette curved handle 2, and a curette head control component 3. The curette handle 1 serves as the gripping part of the instrument, and its design fully considers the convenience and functionality of actual surgical operations. The stainless steel handle 1-1 is the core of the handle, with a groove 1-3 formed along its internal axis. A negative pressure tube 1-2 is embedded and fixed in this groove 1-3. Both ends of the stainless steel handle 1-1 have openings for the negative pressure tube 1-2 to pass through. This design allows the negative pressure tube 1-2 to be securely installed inside the handle while ensuring its unobstructed flow for subsequent suction. A through hole is provided on the side wall of the stainless steel handle 1-1. The branch pipe 1-4 passes through this through hole and is fixed to the side wall of the negative pressure pipe 1-2. The end of the branch pipe 1-4 away from the negative pressure pipe 1-2 is connected to the negative pressure machine connecting pipe 1-5 through a connector. The other end of the negative pressure machine connecting pipe 1-5 is tightly connected to the suction port of the medical negative pressure machine. During the operation, by starting the medical negative pressure machine, the generated negative pressure can pass through the negative pressure machine connecting pipe 1-5, the branch pipe 1-4, and the negative pressure pipe 1-2 in sequence, and finally be transmitted to the suction part of the entire instrument to realize the suction function, effectively remove the fluid generated during the operation, ensure a clear surgical field, and provide the doctor with a good operating view.

[0022] There are two curette curved rods 2, fixedly connected to the two ends of the curette handle 1. Each curette curved rod 2 includes a curved rod 2-1, with a 70-80° bend between the two ends. This large-angle bend design allows the curette to better adapt to the complex anatomical structure inside the maxillary sinus and smoothly reach various positions for operation. Moreover, both curved rods 2-1 are rotationally symmetrical about the center point of the stainless steel handle 1-1, providing greater flexibility and convenience for surgical operations. Inside the curved rod 2-1, there is a strip-shaped groove 2-2 through which the negative pressure hose 2-4 passes. The negative pressure hose 2-4 is embedded and fixed in this strip-shaped groove 2-2, ensuring the stability of the negative pressure hose 2-4 inside the curved rod 2-1 and preventing displacement or damage due to various movements during surgical operations. A scraper head 2-3 is located at the end of the curved rod 2-1 furthest from the stainless steel handle 1-1. The scraper head 2-3 is elliptical in shape, with a circular hole in the center of its end face near the curved rod 2-1 for the negative pressure hose 2-4 to pass through. The end of the negative pressure hose 2-4 passes through this circular hole and connects to an arc-shaped groove 2-5. The arc-shaped groove 2-5 is arc-shaped, and the internal spaces of the arc-shaped groove 2-5 and the negative pressure hose 2-4 are interconnected. During the operation, when the negative pressure system is activated, the suction port 2-6 on the end face of the arc-shaped groove 2-5 can aspirate the fluid generated during the ear, nose, and throat scraping operation, effectively preventing fluid accumulation from affecting the surgical field and operation. The head end of the curved rod 2-1 can be separated from the tail end, which is connected by threads. After the operation, the head end of the curved rod 2-1 can be disassembled to achieve the purpose of this device being a disposable instrument.

[0023] The scraper head control component 3 is the key part for achieving multi-angle changes in the scraper head 2-3. Four small head electromagnets 3-1 are fixed on the end face of the scraper head 2-3 near the curved rod 2-1, while four small tail electromagnets 3-2 are fixed on the end face of the curved rod 2-1 near the scraper head 2-3. These small electromagnets are arranged in a circular array. When the head and tail electromagnets 3-1 and 3-2 are energized, they generate a magnetic force that attracts each other. By controlling the energization of electromagnets at different positions, the angle change of the scraper head 2-3 relative to the curved rod 2-1 can be precisely controlled, thus achieving cutting or scraping effects in different directions. The power supplies for the head and tail electromagnets 3-1 and 3-2 are connected to an external remote control and power supply via an integrated wiring harness. Doctors can conveniently control the energization status of the electromagnets by operating the external remote control, thereby achieving remote control of the angle of the scraper head 2-3. Among them, the curette head control component 3, the integrated wiring harness, and the head of the detachable disassembly rod 2-1 are all sterilized and packaged in a sterile vacuum bag. They are disassembled during surgery and installed on the head of the rod 2-1.

[0024] Furthermore, four ball sockets 3-3 are fixed on the side walls of the scraper head 2-3 and the curved rod 2-1, which are close to each other. Ball heads 3-4 are movably connected to the ball sockets 3-3, which have spherical grooves for the ball heads 3-4 to roll. This connection between the ball sockets 3-3 and the ball heads 3-4 allows the scraper head 2-3 to move more flexibly and smoothly during angle changes. An inner hollow tube 3-5 is fixed to the end of the ball heads 3-4, which are close to each other. The inner hollow tube 3-5 has a cavity for the movable column 3-6 to be inserted through. A limit block is fixed to the end of the movable column 3-6 inside the inner hollow tube 3-5. A limit ring is fixed to the port of the inner hollow tube 3-5 to block the limit block. The diameter of the limit block is larger than the diameter of the limit ring. This design limits the range of motion of the movable column 3-6, ensuring the stability of the entire scraper head control component 3 structure and preventing parts from falling off during operation.

[0025] In actual surgical procedures, the surgeon holds the curette handle 1 and, through the nasal endoscope and the natural opening of the maxillary sinus, inserts the curette into the maxillary sinus. Due to the large-angle bending design of the curette handle 2, the curette can easily reach various locations within the maxillary sinus. When encountering lesions in different directions, the surgeon uses an external remote control to control the energization of the small electromagnets 3-1 and 3-2 at the head and tail ends, causing the curette head 2-3 to change angle accordingly, thus allowing for appropriate removal or scraping of the lesion. Simultaneously, a medical negative pressure machine is activated, and fluids generated during the procedure are promptly aspirated through the negative pressure tube 1-2, branch tube 1-4, negative pressure hose 2-4, and suction port 2-6 on the arc-shaped groove 2-5, ensuring a clear surgical field and enabling the surgery to proceed more smoothly and efficiently. This new type of controllable curette effectively solves the problem that traditional surgical instruments cannot reach or completely remove lesions due to structural limitations. It avoids causing greater collateral damage to patients when using the Colloche or pre-lacrimal recess approach. For patients, it can shorten hospitalization and postoperative recovery time and reduce postoperative pain.

[0026] Based on the above embodiments, the specific workflow is described as follows: The doctor holds the curette handle 1 and inserts the curette into the maxillary sinus through the natural opening of the maxillary sinus via a nasal endoscope. The stainless steel handle 1-1 of the curette handle 1 has a groove 1-3 at its internal axis position that is used to fix the negative pressure tube 1-2. Both ends have openings for the negative pressure tube 1-2 to pass through, and a through hole in the side wall fixes a branch tube 1-4. The end of the branch tube 1-4 away from the negative pressure tube 1-2 is connected to a negative pressure machine connecting tube 1-5 via a connector. The other end of the negative pressure machine connecting tube 1-5 is connected to the suction port of a medical negative pressure machine. This setup ensures the negative pressure system can function normally. Because the curette handle 1 is fixedly connected to the curved curette 2 at both ends, there is a 70° gap between the two ends of the curved curette 2-1. The 80° bend, with rotational symmetry centered on the stainless steel handle 1-1, allows the scraper to better adapt to the complex anatomy of the maxillary sinus and smoothly reach various positions. Simultaneously, the internal groove 2-2 of the bend 2-1 secures the negative pressure hose 2-4, ensuring its stability. The scraper head 2-3 at the end of the bend 2-1 away from the stainless steel handle 1-1 is elliptical, with a circular hole near the center of the bend 2-1 for the negative pressure hose 2-4 to pass through. The negative pressure hose 2-... 4. After passing through the round hole at the end, it connects to the arc-shaped groove 2-5. The arc-shaped groove 2-5 is arc-shaped and communicates with the internal space of the negative pressure hose 2-4. A suction port 2-6 is opened on the end face away from the negative pressure hose 2-4, which can be used to suction the fluid generated during the ear, nose and throat scraping operation during the operation. When encountering lesions in different directions and needing to adjust the angle of the curette head 2-3, four small electromagnets 3-1 are fixed to the head end of the curette head 2-3 near the end face of the bent rod 2-1, and four tail ends are fixed to the end face of the bent rod 2-1 near the end face of the curette head 2-3. Small electromagnets 3-2 are arranged in a ring array. The power supply of the head electromagnet 3-1 and the tail electromagnet 3-2 is connected to an external remote control and power supply terminal via an integrated wiring harness. The doctor operates the external remote control to control the energization of electromagnets at different positions. When energized, they generate mutual magnetic attraction, causing the curette head 2-3 to change angle relative to the bent rod 2-1. At the same time, the curette head 2-3 and the bent rod 2-1 are close to each other. Four ball sockets 3-3 are fixed on the side wall, and the ball sockets 3-3 are close to each other and are internally connected to the ball head. 3-4, the ball socket 3-3 has a spherical groove inside for the ball head 3-4 to roll. This connection method makes the angle change of the scraper head 2-3 more flexible and smooth. The ball heads 3-4 are close to each other and the inner hollow tube 3-5 is fixed at the end. The inner hollow tube 3-5 is provided with a movable column 3-6 that can be inserted through the cavity. The movable column 3-6 is located inside the inner hollow tube 3-5 and the end is fixed with a limiting block. The port position of the inner hollow tube 3-5 is fixed with a blocking limiting block and a limiting ring. The diameter of the limiting block is larger than the diameter of the limiting ring hole, which limits the range of motion of the movable column 3-6 and ensures the stability of the structure.While the curette head 2-3 is used to remove or scrape the lesion at an appropriate angle, the medical negative pressure machine is activated. Negative pressure is sequentially applied through the negative pressure machine connecting pipe 1-5, branch pipe 1-4, negative pressure pipe 1-2, negative pressure hose 2-4, and suction port 2-6 on the arc-shaped groove 2-5, promptly aspirating any fluid generated during the procedure to ensure a clear surgical field. This allows for a smoother and more efficient surgery. This new type of controllable curette effectively solves the problem of traditional surgical instruments being unable to reach or completely remove lesions due to structural limitations. It avoids the greater collateral damage caused to patients by using the Collet-Morley or pre-lacrimal recess approach, shortening hospital stays and postoperative recovery time, and reducing postoperative pain.

[0027] This invention is not limited to the preferred embodiments described above. Anyone should understand that structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention. Finally, it should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this application, should still fall within the scope of the technical content disclosed in this application.

Claims

1. A controllable curette for maxillary sinus lesion resection under endoscopic otolaryngology, comprising a curette handle (1), characterized in that: The scraper handle (1) is fixedly connected to scraper bent rods (2) at both ends, and scraper head control parts (3) are provided on the ends of the scraper bent rods (2) away from the scraper handle (1). The scraper handle (1) includes a stainless steel handle (1-1), a negative pressure tube (1-2) embedded and fixed inside the stainless steel handle (1-1), and a branch pipe (1-4) fixed to the side wall of the negative pressure tube (1-2) and passing through the stainless steel handle (1-1). The end of the branch pipe (1-4) away from the negative pressure tube (1-2) is connected to a negative pressure machine connecting pipe (1-5) through a connector. The scraper rod (2) includes a bent rod (2-1), a negative pressure hose (2-4) embedded inside the bent rod (2-1), and a scraper head (2-3) located at the end of the bent rod (2-1) away from the stainless steel handle (1-1). The end of the negative pressure hose (2-4) passes through the scraper head (2-3) and is connected to an arc groove (2-5). A suction port (2-6) is provided on the end face of the arc groove (2-5) away from the negative pressure hose (2-4). The scraper head control component (3) includes four small electromagnets (3-1) fixed on the end face of the scraper head (2-3) near the bent rod (2-1) and four small electromagnets (3-2) fixed on the end face of the bent rod (2-1) near the scraper head (2-3). Each of the scraper head (2-3) and the bent rod (2-1) has four ball sockets (3-3) fixed on their respective side walls. Ball heads (3-4) are movably connected inside the ball sockets (3-3). Hollow tubes (3-5) are fixed on the ends of the ball heads (3-4). Movable columns (3-6) pass through the ends of the hollow tubes (3-5).

2. The maneuverable curet based on maxillary lesion resection under ear-nose-throat endoscopy of claim 1, wherein: The stainless steel handle (1-1) has a groove (1-3) on its internal axis for the negative pressure tube (1-2) to be inlaid and fixed, and both ends of the stainless steel handle (1-1) have openings for the negative pressure tube (1-2) to pass through.

3. The controllable curette for maxillary sinus lesion resection under endoscopic otolaryngology as described in claim 1, characterized in that: The stainless steel handle (1-1) has a through hole on its side wall for the branch pipe (1-4) to pass through. The end of the negative pressure machine connecting pipe (1-5) away from the branch pipe (1-4) is connected to the suction port of the medical negative pressure machine.

4. The maneuverable curet based on endoscopic maxillary lesion resection of claim 1, wherein: The two ends of the bent rod (2-1) have a 70-80° bend, and the bent rod (2-1) is rotate symmetrical about the center point of the stainless steel handle (1-1).

5. The maneuverable curet based on maxillary lesion resection under E.N.T. endoscopy according to claim 1, characterized in that: The inside of each bent rod (2-1) is provided with a strip-shaped groove (2-2) through which the negative pressure hose (2-4) passes.

6. The steerable curet based on endoscopic maxillary lesion resection of claim 1, wherein: The scraper head (2-3) is elliptical in shape, and a round hole for the negative pressure hose (2-4) to pass through is provided at the center of the end face of the scraper head (2-3) near the bent rod (2-1).

7. The steerable curet based on endoscopic maxillary lesion resection of claim 1, wherein: The arc-shaped grooves (2-5) are all arc-shaped, and the internal spaces of the arc-shaped grooves (2-5) and the negative pressure hose (2-4) are interconnected, used to aspirate the liquid generated during the ear, nose and throat scraping operation.

8. The steerable curet based on endoscopic maxillary lesion resection of claim 1, wherein: The head-end miniature electromagnet (3-1) and the tail-end miniature electromagnet (3-2) are arranged in a ring array, and the head-end miniature electromagnet (3-1) and the tail-end miniature electromagnet (3-2) attract each other after being energized. The power supply of the head-end miniature electromagnet (3-1) and the tail-end miniature electromagnet (3-2) is connected to the external remote control and power supply terminal through an integrated wiring harness.

9. The steerable curet based on endoscopic maxillary lesion resection of claim 1, wherein: The inner tube (3-5) is provided with a cavity for the movable column (3-6) to be inserted through, and the ball socket (3-3) is provided with a spherical groove for the ball head (3-4) to roll.

10. The steerable curet based on endoscopic maxillary lesion resection of claim 1, wherein: Each movable column (3-6) has a limit block fixed at its end inside the inner tube (3-5), and each inner tube (3-5) has a limiting ring fixed at its port position to block the limit block. The diameter of the limit block is larger than the aperture of the limiting ring.

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