A shuttle nasal septum perforation stapler and method of use

Abstract

The application discloses a shuttle type nasal septum penetrating suture device and a use method thereof, which comprises a suture device body and a driving mechanism, the suture device body comprises a front end suture assembly and a rear end holding assembly, the front end suture assembly comprises a sliding cover plate, a sliding cover plate spring, a driving needle seat, a driving connecting rod, a suture needle and a push rod, the push rod is arranged on the driving connecting rod, the sliding cover plate and the lower cover plate combined structure which can be self-adaptively opened and closed are arranged, in the whole process of placing and withdrawing the device into the nasal cavity, the suture needle is always in the closed protection channel, and the suture needle is automatically windowed and punctured only when the target tissue of the nasal septum is fitted, the circular arc movement track of the suture needle is limited through the arc-shaped groove of the needle seat, the limiting guide of the linear bearing seat and the transmission of the stroke amplification connecting rod are matched, the angle, the depth and the track height of each puncture of the suture needle are unified, the one-time full-layer penetration of the nasal septum mucosa and cartilage can be stably realized, the suture point position is regular, and the stress is uniform.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a fusiform nasal septum suture device and its usage method. Background Technology

[0002] Septoplasty and septoplasty are routine ENT surgeries. After the surgery, the nasal septum mucosa and cartilage need to be sutured and fixed through to correct the nasal septum deviation and prevent complications such as nasal adhesions, hematomas and perforations. At present, nasal septum suturing in clinical practice mostly adopts the traditional manual suturing method, and medical staff need to hold the suture needle and needle holder to cooperate in the operation.

[0003] Existing nasal cavity space is narrow and field of vision is limited, making manual suturing operations extremely difficult. The puncture angle of the suture needle is difficult to control precisely, which easily leads to problems such as suture position deviation and inconsistent suture depth. This results in poor septal fixation and affects the surgical prognosis. Secondly, manual penetrating suture requires multiple needle holding, insertion, and withdrawal, which is a complicated operation and time-consuming, significantly increasing the workload of medical staff. At the same time, during traditional suturing, the exposed suture needle is very likely to accidentally scrape or puncture the normal mucosa tissue around the nasal cavity, causing secondary damage and increasing the risk of postoperative edema, pain, and infection for patients. Summary of the Invention

[0004] The purpose of this invention is to provide a fusiform nasal septum suture device and its method of use, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fusiform nasal septum suture device, comprising a suture device body and a drive mechanism;

[0006] The main body of the suture device includes a front suture assembly and a rear gripping assembly. The front suture assembly includes a sliding cover plate, a sliding cover plate spring, a drive needle seat, a drive linkage, a suture needle, and a lever. The suture needle has a semi-circular arc structure. Through the linkage between the drive needle seat and the drive linkage, the suture needle is driven to perform an arc-shaped movement.

[0007] The lever is set on the drive linkage and cooperates with the hook groove opened at the tail of the suture needle, driving the suture needle to move along the two sets of needle seat arc grooves opened at the front end of the drive needle seat. The sliding cover plate is slidably connected to the top of the drive needle seat and the sliding cover plate spring is connected between the sliding cover plate and the drive needle seat.

[0008] The rear grip assembly includes a plastic housing and a ratchet mechanism, gear set, cam, and stroke amplification link disposed within the plastic housing. The pressing handle inside the plastic housing is linked to the gear set through the ratchet mechanism, which drives the cam to rotate and drives the stroke amplification link to move through the cam driven wheel inside the cam. This, in turn, drives the drive link to slide along the linear bearing seat. The linear bearing seat cooperates with the link auxiliary spring to realize the reset action of the drive link.

[0009] Preferably, the lever is divided into lever A and lever B. In the initial state, lever A hooks the hook groove at the tail of the suture needle. One end of the arc-shaped groove of the needle seat is connected to a sliding boss. When lever A moves to the position of the sliding boss, it is decoupled from the suture needle.

[0010] Preferably, the stroke amplification connecting rod cooperates with the linear bearing housing to convert the rotational stroke of the cam inside the plastic housing into the linear reciprocating motion of the driving connecting rod.

[0011] Preferably, the front end suture assembly is provided with a lower cover plate, which cooperates with the sliding cover plate to form a closed channel for accommodating the suture needle, thereby preventing the suture needle from accidentally damaging the nasal mucosa.

[0012] Preferably, the ratchet mechanism includes a ratchet and a ratchet pawl rotatably connected within a plastic housing, and the gear set consists of two sets of linked gears rotatably connected within the plastic housing, one of which meshes with a cam.

[0013] Preferably, the pressing handle is linked to the ratchet, and the ratchet pawl cooperates with the ratchet to realize unidirectional drive of the pressing handle.

[0014] Preferably, the stroke amplification linkage is linked with the cam driven wheel and drive linkage inside the cam, and the linear bearing seat is disposed inside the plastic housing to realize the linear reciprocating motion of the drive linkage.

[0015] Preferably, the stroke amplification link is a multi-segment hinged link structure. Through the hinged cooperation between the links, the motion of the cam follower is amplified and transmitted to the drive link to adapt to the motion stroke of the suture needle.

[0016] A method of using a fusiform nasal septum suture device includes the following steps:

[0017] S1: Pre-install the suture needle in the drive needle holder, hook the lever A into the hook groove at the tail of the suture needle, and the sliding cover is closed under the action of the spring. Check that the ratchet mechanism and the drive linkage are reset normally.

[0018] S2: Insert the tip of the suture device along the natural passage of the nasal cavity. After the sliding cover contacts the nasal septum tissue, it is pushed open to expose the suture needle passage. Adjust the position of the instrument so that the target suture site is aligned with the movement trajectory of the suture needle.

[0019] S3: Press the handle, the ratchet mechanism drives the gear set to rotate, the cam mechanism drives the stroke amplification linkage to push the drive linkage forward; the lever A drives the suture needle to move along the arc groove of the drive needle seat, the tip of the suture needle penetrates the mucosa, cartilage on one side of the nasal septum and the mucosa on the opposite side, completing the tissue penetration;

[0020] S4: When the drive linkage moves to the end of its stroke, the lever moves to the position of the slide boss, decoupling from the hook groove at the tail of the suture needle; when the pressing handle is released, the linkage auxiliary spring drives the drive linkage to reset, and the lever B does not hook the suture needle during the reset process, and the suture needle stays in the position after penetration, thus fixing the state with thread.

[0021] S5: The sliding cover closes again under the action of the spring, withdrawing the suture from the nasal cavity and completing the single through suture operation; repeat the above steps to complete the multi-needle suture, and the suture can be threaded and fixed through the channel pierced by the suture needle.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] (1) By setting up an adaptive sliding cover plate and lower cover plate combination structure, the suture needle is always in the closed protective channel during the entire process of instrument insertion and withdrawal from the nasal cavity. It automatically opens the window for puncture only when it is attached to the target tissue of the nasal septum, which completely solves the problem of traditional suture needles being exposed and prone to accidental puncture and scraping of normal nasal mucosa. It minimizes tissue damage during the operation, reduces the risk of postoperative nasal edema, pain, bleeding and infection, and improves the safety of the operation.

[0024] (2) By limiting the arc movement trajectory of the suture needle through the arc groove of the needle seat, and with the limiting guide of the linear bearing seat and the transmission of the stroke amplification linkage, the angle, depth and trajectory height of the suture needle are uniform each time it is punctured. This completely avoids the problems of suture deviation, uneven depth and incomplete puncture caused by poor field of vision and small operating space in manual suturing. It can stably achieve one-time full-thickness penetration of the nasal septum mucosa and cartilage. The suture points are regular and the force is uniform, which effectively ensures the postoperative fixation effect of the nasal septum and greatly reduces the incidence of complications such as nasal septum displacement, nasal adhesion and postoperative hematoma.

[0025] (3) By integrating a ratchet one-way drive, cam transmission, automatic needle removal and automatic reset into one-piece structure, the entire process of opening the window, puncture, needle removal, retention and reset can be completed by pressing the handle once. There is no need for manual needle holding, alignment, needle removal and fixation, which simplifies the tedious manual suturing steps. At the same time, the needle removal is stable and the reset is smooth. Multiple suturing operations can be completed continuously, which greatly shortens the time of nasal septum suturing surgery and effectively reduces the operation intensity of medical staff. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is an exploded view of the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the present invention after the plastic outer shell has been disassembled;

[0030] Figure 5 This is a front view of the present invention after the plastic casing has been removed;

[0031] Figure 6 This is a schematic diagram of the structure of the pressing handle of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the drive linkage and suture needle of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the suture needle of the present invention;

[0034] Figure 9 This is a schematic diagram illustrating the process of the suture needle moving within the arc-shaped groove of the needle holder according to the present invention.

[0035] In the diagram: 1. Sliding cover plate; 2. Sliding cover plate spring; 3. Drive needle holder; 4. Drive linkage; 5. Suture needle; 7. Hook groove; 8. Needle holder arc groove; 10. Plastic housing; 11. Press handle; 12. Cam; 13. Stroke amplification linkage; 14. Cam driven wheel; 15. Linear bearing seat; 16. Linkage auxiliary spring; 17. Lever A; 18. Lever B; 19. Slide groove boss; 20. Lower cover plate; 21. Ratchet; 22. Ratchet pawl; 23. Linkage gear; 24. Suture; 25. Tissue. Detailed Implementation

[0036] The technical solutions of 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.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0038] This invention provides, for example Figure 1-9 The fusiform nasal septum penetrating suture device shown includes a suture device body that realizes automatic puncture and suturing of the entire nasal septum, and a drive mechanism that provides unidirectional drive, stroke amplification and automatic reset power for the suture device body.

[0039] The main body of the suture device includes a front suture assembly for achieving minimally invasive puncture protection and arc-shaped suture action, and a rear grip assembly for the operator to hold and control. The front suture assembly has the functions of adaptive opening and closing protection, arc-shaped trajectory puncture, and automatic needle removal and retention. Specifically, it includes a sliding cover plate 1, a spring for the sliding cover plate 1, a drive needle seat 3, a drive linkage 4, a suture needle 5 for suture with thread, and a linkage lever. The suture needle 5 is set as a semi-circular arc structure adapted to the anatomical structure of the nasal septum. The suture needle 5 forms a mechanical linkage structure with the drive needle seat 3 and the drive linkage 4. Relying on the linear driving force of the drive linkage 4, the suture needle 5 is driven to make a precise arc-shaped movement along a preset arc trajectory to complete the full-thickness puncture operation of the nasal septum mucosa and cartilage.

[0040] The linkage lever is fixedly mounted on the drive linkage 4 and forms a decoupled locking structure with the pre-set hook groove 7 at the tail of the suture needle 5. It has the function of driving the suture needle 5 to move synchronously and automatically disengaging after reaching the target position. The front end of the drive needle seat 3 has two sets of symmetrically arranged needle seat arc grooves 8, which are used to limit and guide the movement trajectory of the suture needle 5 to ensure that the puncture trajectory is uniform and the angle is accurate each time. The sliding cover plate 1 is connected to the top of the drive needle seat 3 by a sliding assembly method. The sliding cover plate 1 is spring-elastically connected between the sliding cover plate 1 and the drive needle seat 3 to form an adaptive elastic opening and closing structure. It can automatically open and close according to the contact state between the instrument and the nasal tissue 25, realizing the function of fully enclosed protection in non-operation state and automatic window opening puncture in operation state.

[0041] The rear grip assembly includes a plastic housing 10 and a ratchet mechanism, gear set, cam, and stroke amplification linkage 13 integrated inside the plastic housing 10 for power transmission and motion conversion. A pressing handle 11 is mounted on the outer side of the plastic housing 10. The pressing handle 11 serves as the sole manual control end and, through the ratchet mechanism and gear set, forms a unidirectional transmission linkage structure, converting manual pressing force into stable mechanical rotational force, thereby driving the cam to perform fixed-axis rotational motion. A cam follower wheel 14 is mounted inside the cam, and the cam connects to the cam follower wheel 14... The stroke amplification linkage 13 is linked to transmit the rotational swing stroke of the cam to the stroke amplification linkage 13. The stroke amplification linkage 13 has the functions of stroke amplification and motion adaptation, which can amplify the small rotational stroke into a linear drive stroke that adapts to the puncture requirements, thereby driving the drive linkage 4 to slide precisely in a straight line along the linear bearing seat 15. The linear bearing seat 15 and the linkage auxiliary spring 16 cooperate with each other to form an automatic reset structure. After the pressing force is removed, the spring elastic potential energy drives the drive linkage 4 and the front end suture assembly to complete the automatic reset, realizing the cyclic operation function of the instrument.

[0042] The levers include levers A17 and B18, which have independent functional zones. Lever A17 is a puncture linkage lever that precisely hooks the hook groove 7 at the tail of the suture needle 5 in the initial assembly state, forming a stable locking linkage structure to drive the suture needle 5 to complete the entire puncture movement. The end of the arc-shaped groove 8 of the needle seat has an integrally formed sliding boss 19. The sliding boss 19 has a limiting and decoupling function. When lever A17 moves to the corresponding position of the sliding boss 19 with the drive linkage 4, it is forcibly disengaged from the hook groove 7 at the tail of the suture needle 5 by the limiting and guiding effect of the sliding boss 19 structure, realizing the automatic decoupling of lever A17 and suture needle 5 and completing the needle removal action. Lever B18 is a reset follow-up lever that only moves synchronously with the drive linkage 4 to reset. It does not have the function of hooking the suture needle 5, ensuring that the suture needle 5 will not be pulled back during the reset process, and ensuring that the suture needle 5 remains stably in the tissue channel 25 after puncture.

[0043] The stroke amplification link 13 and the linear bearing seat 15 form a motion conversion cooperation structure. The linear bearing seat 15 has a precise limiting and guiding function, which can limit the motion freedom of the drive link 4 and eliminate the problems of deviation and jamming. The two work together to accurately convert the rotational swing stroke of the cam into the horizontal linear reciprocating motion of the drive link 4, realize the stable conversion of the power form, and ensure the smoothness and regularity of the puncture and repositioning action of the suture needle 5.

[0044] The external fixing assembly of the front end suture assembly is equipped with a lower cover plate 20. The lower cover plate 20 corresponds to and cooperates with the sliding cover plate 1. When the instrument is not in operation, it can be closed to form a completely closed suture needle 5 receiving channel, which has an all-round protection function. It can completely cover and hide the suture needle 5, effectively avoiding the suture needle 5 being exposed and accidentally scraping or damaging the normal nasal mucosa tissue 25 during the insertion and withdrawal of the instrument into and out of the nasal cavity. At the same time, it can cooperate with the opening and closing of the sliding cover plate 1 during puncture operation to accurately expose the puncture channel without interfering with the normal suture puncture operation.

[0045] The ratchet mechanism includes a ratchet rotatably mounted inside the plastic housing 10 and a ratchet pawl 22 that matches and engages with the ratchet. The ratchet and ratchet pawl 22 form a one-way self-locking transmission structure, which has the functions of one-way force transmission and reverse locking. It only allows forward power transmission when the handle 11 is pressed down, and locks the reverse power generated by the handle's rebound, thus preventing the transmission structure from spinning freely and power interruption. The gear set is configured as two sets of meshing linkage gears 23. Both sets of linkage gears 23 are rotatably mounted inside the plastic housing 10. One set of linkage gears 23 forms a meshing transmission structure with the cam, which can smoothly and evenly transmit the mechanical torque transmitted by the ratchet to the cam, realizing multi-stage smooth power transmission.

[0046] The pressing handle 11 and the ratchet form a fixed linkage structure. The pressing action of the pressing handle 11 can directly drive the ratchet to rotate in a specific direction. The ratchet pawl 22 continuously and elastically engages with the ratchet, realizing the one-way drive and self-locking function of the pressing handle 11. This ensures that a single press only outputs positive puncture power, and the transmission structure does not move in the opposite direction when the handle rebounds. This effectively improves the stability and safety of the instrument operation and avoids jamming and displacement during the puncture process.

[0047] The stroke amplification linkage 13 is hinged at both ends to the cam driven wheel 14 and the drive linkage 4 on the inner side of the cam, respectively, forming a closed-loop transmission structure; the linear bearing seat 15 is fixedly embedded inside the plastic shell 10, providing precise limit and guide support for the reciprocating motion of the drive linkage 4, further ensuring the accuracy of the linear reciprocating motion of the drive linkage 4, ensuring that the puncture trajectory of the suture needle 5 is uniform and the puncture depth is consistent, and avoiding human operation errors.

[0048] The stroke amplification link 13 adopts a multi-segment hinged link structure. The hinged connection between each link forms an adaptive swing amplification transmission structure, which has the core functions of stroke amplification and motion adaptation. It can mechanically amplify the small swing stroke of the cam driven wheel 14, make up for the deficiency of insufficient small rotation stroke of the cam, accurately match the motion stroke required for full-thickness nasal septum penetration puncture, adapt to the arc-shaped puncture motion of the suture needle 5, and ensure that the full-thickness penetration of the mucosa and cartilage can be completed in one puncture each time.

[0049] A method of using a fusiform nasal septum suture device includes the following steps:

[0050] S1: Instrument pre-assembly self-inspection procedure: Precisely pre-assemble and position the suture needle 5 in the arc-shaped groove 8 of the drive needle seat 3, and use the lever A17 to engage the hook groove 7 at the tail of the suture needle 5 to complete the linkage assembly of the suture needle 5 and the transmission structure; the sliding cover plate 1 remains closed under the elastic pre-tightening action of the spring in the sliding cover plate 1, sealing the suture needle 5 channel; manually press and reset the pressing handle 11 to check that the one-way transmission function of the ratchet mechanism, the reset function of the drive linkage 4, and the linkage function of each transmission structure are normal, ensuring that the instrument is in a compliant standby state;

[0051] S2: Minimally invasive placement and alignment steps: Slowly insert the tip of the suture device along the natural physiological passage of the nasal cavity, avoiding normal nasal tissue 25. After the sliding cover 1 contacts the target suture tissue 25 of the nasal septum, it is automatically opened by the reverse pressure of the tissue 25, overcoming the pre-tightening elasticity of the spring, thus exposing the dedicated puncture channel of the suture needle 5. Fine-tune the position of the instrument so that the target suture site of the nasal septum is precisely aligned with the preset arc movement trajectory of the suture needle 5, completing the precise alignment before puncture.

[0052] S3: Pressing and puncturing the penetrating procedure: Press the pressing handle 11 at a uniform speed. Through the ratchet mechanism and the multi-stage gear transmission, the cam is driven to rotate in a directional manner. The cam driven wheel 14 swings along the cam contour trajectory and drives the stroke amplification link 13 to move. The stroke amplification link 13 amplifies the transmission stroke and pushes the driving link 4 to slide forward linearly along the linear bearing seat 15. The driving link 4 drives the lever A17 to move synchronously. The lever A17 drives the suture needle 5 to make a precise arc movement along the arc groove 8 of the needle seat, so that the tip of the suture needle 5 passes through the nasal septum mucosa on one side, the middle cartilage and the mucosal tissue 25 on the other side in sequence, completing the full-thickness tissue 25 penetration of the nasal septum in one go.

[0053] S4: Automatic needle disengagement and dwelling step: When the drive linkage 4 moves to the preset end point of the stroke, the lever A17 moves synchronously to the position of the slide boss 19. Under the limiting and guiding action of the slide boss 19, it automatically decouples from the hook groove 7 at the tail of the suture needle 5, and releases the linkage between the suture needle 5 and the transmission structure. Slowly release the pressing handle 11 to cancel the manual driving force. The linkage auxiliary spring 16 releases the elastic potential energy, which drives the drive linkage 4, the stroke amplification linkage 13, and the cam structure to automatically reset. During the reset process, the lever B18 has no hooking action and will not drive the suture needle 5 to retract, so that the suture needle 5 is stably dwelling in the nasal septum puncture channel and the suture is fixed.

[0054] S5: Closure of the retractor and continuous suturing steps: After the instrument is removed from the nasal septum tissue 25, the sliding cover plate 1 loses the pressure of the tissue 25 and automatically closes under the action of the spring of the sliding cover plate 1, forming a closed protective channel again, wrapping the suture needle 5 to avoid damage to the nasal cavity tissue 25 by the retractor; the suture is smoothly withdrawn from the nasal cavity to complete the single nasal septum suturing operation; repeating the above steps S2-S5 can complete the multi-needle standardized suturing operation. The suture 24 can be threaded and fixed through the tissue 25 channel formed by the suture needle 5, so as to achieve a firm suturing and fixation of the multi-layer tissue 25 after nasal septum surgery.

[0055] The fusiform nasal septum suture device and its usage method: In the initial state before the instrument contacts the human tissue 25, the sliding cover plate 1, under the elastic force of the matching elastic component, tightly fits and seals with the lower cover plate 20 fixed at the front end. The two together form a complete closed receiving cavity, completely enclosing and hiding the suture needle 5 inside, so that there is no exposed part of the needle body. This fundamentally avoids the problem of the needle body scraping against the normal nasal mucosa during instrument insertion and displacement. When the front end of the instrument reaches the target suture site of the nasal septum and adheres to the surface of the tissue 25, the nasal septum tissue 25 generates a reverse pressure force on the sliding cover plate 1. This force overcomes the pre-tightening elastic force of the elastic component and pushes the sliding cover plate 1 to produce a directional sliding displacement, automatically opening the movement and puncture channel of the suture needle 5, providing passage space for subsequent puncture operations. When the instrument leaves the area of ​​the nasal septum tissue 25, the external pressure disappears, and the reset elastic force of the elastic component pushes the sliding cover plate 1 to slide in the opposite direction, automatically restoring the closed protective state. The entire process can achieve adaptive opening and closing according to the contact state between the instrument and the tissue 25, without the need for manual operation and adjustment.

[0056] The built-in pressing handle 11 of the rear grip component is the only manual operation end. The action of the pressing handle 11 can directly link the internal ratchet mechanism to operate synchronously. The ratchet and ratchet pawl 22 are paired self-locking structures. The two fit together and lock into place to form a one-way limit drive mechanism. Power is transmitted in the forward direction only when the pressing handle 11 is pressed down. This can effectively lock the reverse power generated by the handle's rebound, eliminate problems such as free rotation of the transmission structure, power interruption, and puncture jamming, and ensure the continuity and stability of power output. During the rotation of the ratchet, it drives the two sets of paired linkage gears 23 to mesh synchronously. Through the multi-stage meshing transmission of the gear sets, the hand... The mechanical torque applied during pressing is smoothly and evenly transmitted to the cam structure, driving the cam to rotate smoothly around a fixed axis. This achieves efficient conversion of manual force into mechanical rotational power. During the cam's rotation, the cam follower 14 always conforms to the contour surface of the cam, producing a regular oscillating displacement following the cam's trajectory. The cam follower 14 and the multi-segment articulated stroke amplification linkage 13 form a linked whole. This special multi-segment articulated structure can mechanically amplify and adapt the small oscillation stroke of the cam follower 14, compensating for the deficiency that small cam rotations cannot meet the puncture requirements, and precisely matching the movement required for full-thickness nasal septum penetration. The stroke is adapted to the puncture operation requirements of the suture needle 5. At the same time, the output end of the stroke amplification linkage 13 is connected to the drive linkage 4, and the drive linkage 4 is assembled inside the linear bearing seat 15. Relying on the limiting and guiding function of the linear bearing seat 15, the curved oscillating motion generated by the cam can be accurately converted into the horizontal linear reciprocating motion of the drive linkage 4, strictly limiting the movement trajectory of the drive linkage 4. When the drive linkage 4 is pushed forward in a straight line, the lever A17 fixed at the end of the linkage is precisely engaged in the hook groove 7 structure at the tail of the suture needle 5, forming a stable linkage relationship. At the same time, the suture needle 5 is assembled in close contact with the arc-shaped groove at the front end of the drive needle seat 3. Under the thrust of the drive linkage 4, the suture needle 5 moves in a regular arc along the preset trajectory of the arc groove. The arc trajectory perfectly matches the anatomical structure of the nasal septum, allowing it to smoothly penetrate the superficial mucosa, intermediate cartilage, and contralateral mucosal tissue 25 of the nasal septum, completing the full-thickness puncture in one go. When the drive linkage 4 is pushed to its limit position, the lever A17 moves to the position of the sliding boss 19 at the end of the arc groove. Relying on the structural limiting and guiding function of the sliding boss 19, the contact position of the lever A17 is forcibly changed, causing the lever A17 to automatically disengage from the hook groove 7 at the tail of the suture needle 5, thus releasing the linkage between the suture needle 5 and the transmission structure. After releasing the pressing handle 11, the drive linkage 4 retracts in the opposite direction with the reset structure. During the reset process, the lever B18 has no locking or hooking structure and will not exert any pulling force on the suture needle 5, allowing the suture needle 5 to completely detach from the instrument transmission structure and remain stably inside the punctured tissue 25 channel, maintaining the suture fixed state.

[0057] After a single puncture and needle removal operation, the pressure applied to the handle 11 by the hand is released, and the built-in linkage auxiliary spring 16 releases the stored elastic potential energy. The elastic tension drives the drive linkage 4 to reverse linearly reset, while the linkage stroke amplification linkage 13 and the cam driven wheel 14 complete the reverse reset movement. This, in turn, drives the cam and linkage gear 23 to rotate in the opposite direction, realizing the step-by-step orderly reset of the entire transmission mechanism. At the same time, the ratchet mechanism automatically unlocks and resets without external pressure, returning to the initial standby state. There are no structural jamming or misalignment problems. The entire structure reset does not require manual adjustment or manual repositioning. After the reset is completed, the instrument directly returns to the initial working state and can be used for the next puncture operation at any time. It supports continuous and high-frequency standardized suturing operations, greatly improving the continuity of operation.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fusiform nasal septum suture device, characterized in that, Includes the main body of the suture device and the drive mechanism; The main body of the suture device includes a front suture assembly and a rear gripping assembly. The front suture assembly includes a sliding cover plate (1), a sliding cover plate spring (2), a drive needle seat (3), a drive linkage (4), a suture needle (5), and a lever. The suture needle (5) has a semi-circular arc structure. Through the linkage between the drive needle seat (3) and the drive linkage (4), the suture needle (5) is driven to perform arc-shaped movement. The lever is set on the drive linkage (4) and cooperates with the hook groove (7) opened at the tail of the suture needle (5) to drive the suture needle (5) to move along the two sets of needle seat arc grooves (8) opened at the front end of the drive needle seat (3). The sliding cover plate (1) is slidably connected to the top of the drive needle seat (3) and the sliding cover plate spring (2) is connected between the sliding cover plate (1) and the drive needle seat (3). The rear grip assembly includes a plastic housing (10) and a ratchet mechanism, a gear set, a cam (12) and a stroke amplification link (13) disposed in the plastic housing (10). The pressing handle (11) in the plastic housing (10) is linked with the gear set through the ratchet mechanism, drives the cam (12) to rotate and drives the stroke amplification link (13) to move through the cam driven wheel (14) in the cam (12), thereby driving the drive link (4) to slide along the linear bearing seat (15). The linear bearing seat (15) cooperates with the link auxiliary spring (16) to realize the reset action of the drive link (4).

2. The fusiform nasal septum suture device according to claim 1 is characterized in that: The lever is divided into lever A (17) and lever B (18). In the initial state, lever A (17) hooks the hook groove (7) at the tail of the suture needle (5). One end of the arc groove (8) of the needle seat is connected to the sliding boss (19). When lever A (17) moves to the position of the sliding boss (19), it is decoupled from the suture needle (5).

3. The fusiform nasal septum suture device according to claim 1, characterized in that: The stroke amplification link (13) cooperates with the linear bearing seat (15) to convert the rotational stroke of the cam (12) inside the plastic shell (10) into the linear reciprocating motion of the drive link (4).

4. The fusiform nasal septum suture device according to claim 1, characterized in that: The front end suture assembly is provided with a lower cover plate (20) on the outside. The lower cover plate (20) cooperates with the sliding cover plate (1) to form a closed channel for accommodating the suture needle (5) to avoid the suture needle (5) from accidentally damaging the nasal mucosa.

5. The fusiform nasal septum suture device according to claim 1, characterized in that: The ratchet mechanism includes a ratchet (21) and a ratchet pawl (22) rotatably connected within the plastic housing (10). The gear set consists of two sets of linked gears (23), which are rotatably connected within the plastic housing (10). One set of linked gears (23) meshes with a cam (12).

6. The fusiform nasal septum suture device according to claim 5, characterized in that: The pressing handle (11) is linked to the ratchet (21), and the ratchet pawl (22) cooperates with the ratchet (21) to realize the one-way drive of the pressing handle (11).

7. The fusiform nasal septum suture device according to claim 1, characterized in that: The stroke amplification link (13) is linked with the cam follower wheel (14) and drive link (4) in the cam (12), and the linear bearing seat (15) is set in the plastic shell (10) to realize the linear reciprocating motion of the drive link (4).

8. The fusiform nasal septum suture device according to claim 1, characterized in that: The stroke amplification link (13) is a multi-segment hinged link structure. Through the hinged cooperation between the links, the motion of the cam follower wheel (14) is amplified and transmitted to the drive link (4) to adapt to the motion stroke of the suture needle (5).

9. A method of using the fusiform nasal septum penetrating suture device according to any one of claims 1-8, characterized in that, Includes the following steps: S1: Pre-install the suture needle (5) in the drive needle seat (3), hook the lever A (17) into the hook groove (7) at the tail of the suture needle (5), and the sliding cover plate (1) is closed under the action of the sliding cover plate spring (2). Check that the ratchet mechanism and the drive linkage (4) are reset normally. S2: Insert the front end of the suture device along the natural passage of the nasal cavity. After the sliding cover (1) contacts the nasal septum tissue, it is pushed open to expose the suture needle passage. Adjust the position of the instrument so that the target suture site is aligned with the movement trajectory of the suture needle (5). S3: Press the handle (11), the ratchet mechanism drives the gear set to rotate, the cam mechanism drives the stroke amplification linkage (13) to push the drive linkage (4) to move forward; the lever A (17) drives the suture needle (5) to move along the arc groove (8) of the drive needle seat, the tip of the suture needle (5) penetrates the mucosa, cartilage and the opposite mucosa of the nasal septum, and completes the tissue (25) penetration; S4: When the drive link (4) moves to the end of its stroke, the lever moves to the position of the slide boss (19) and decouples from the hook groove (7) at the tail of the suture needle (5); when the press handle (11) is released, the link auxiliary spring (16) drives the drive link (4) to reset. During the reset process of the lever B (18), the suture needle (5) is not hooked. The suture needle (5) stays in the position after penetration, thus achieving the fixed state of the thread. S5: The sliding cover (1) closes again under the action of the spring (9), and the suture is withdrawn from the nasal cavity to complete the single through suture operation; repeat the above steps to complete the multi-needle suture, and the suture (24) can be threaded and fixed through the channel pierced by the suture needle (5).

Images