Multifunctional forceps for gasless endoscopic thyroid surgery

Abstract

Multifunctional forceps for gasless endoscopic thyroid surgery, the multifunctional forceps comprising a handle, a cannula (4) and a conical tube (17), the handle comprising a mounting shell (1), a main grip (3) and an auxiliary grip (2), and a grasping mechanism being provided at the end of the cannula (4); and further comprising a locking mechanism, which comprises a drive assembly, a latch assembly and a metal rod (9), wherein the latch assembly comprises a locking block (15) slidably connected in the head of the cannula (4); the grasping mechanism comprises a main jaw (12), an auxiliary jaw (13), and a connecting rod (10) pivotally connected between the auxiliary jaw (13) and the auxiliary grip (2); intermeshing teeth are provided on the opposing sides of the main jaw (12) and the auxiliary jaw (13); and an opening (41) is provided at the head of the cannula (4), the cannula (4) is in communication with the conical tube (17), and a cylindrical connector (171) is provided above and in communication with the conical tube (17). The device can achieve multiple functions such as grasping, dissection, enabling the jaws to be rapidly locked in a grasping state, and the aspiration of blood and evacuation of electrosurgical smoke during surgery, can be applied to various different surgical operation scenarios, has higher flexibility, and can reduce the difficulty of surgery and effectively improve the efficiency of surgery.

Description

Multi-functional forceps for non-inflatable endoscopic thyroid surgery Technical Field

[0001] This invention relates to the technical field of medical surgical instruments, specifically to multifunctional forceps for non-inflatable endoscopic thyroid surgery. Background Technology

[0002] With the increasing diagnosis rate of thyroid diseases, especially the significant increase in the proportion of female patients, the demand for thyroid surgical treatment is also on the rise. Traditional open surgery often leaves noticeable scars on the neck, negatively impacting patients' appearance and psychological well-being. Therefore, ensuring cosmetic results while pursuing treatment effectiveness has become an important direction for the development of thyroid surgery.

[0003] Against this backdrop, endoscopic thyroid surgery has become one of the mainstream treatment options for thyroid diseases due to its significant advantages such as minimally invasiveness and excellent cosmetic results. Endoscopic thyroid surgery offers diverse approaches, including transclavicular, transthoracic, transareolar, transaxillary, and transoral vestibule approaches. These different approaches aim to find the optimal surgical path for the patient, minimizing harm to the body and reducing the risk of postoperative complications. Furthermore, the incisions are concealed by clothing after suturing, preventing scarring and improving postoperative cosmetic results. The smaller incisions also reduce postoperative pain and neck numbness, significantly improving surgical safety.

[0004] There are two main methods for creating the surgical cavity in endoscopic thyroid surgery: the pneumatic method and the non-pneumatic method. The pneumatic method involves inflating the surgical area with carbon dioxide gas to maintain the surgical space. This results in less traction damage to the soft tissues in the surgical area, but may cause complications such as hypercapnia, subcutaneous emphysema, and gas embolism. The non-pneumatic method, on the other hand, relies on specific retractors to fix and maintain the surgical space. Comparatively, this method creates a more stable surgical space and offers greater ease of operation for the surgeon.

[0005] In non-pneumatic endoscopic thyroid surgery, dissecting forceps are the surgeon's primary operating instrument. Surgeons need to frequently use these forceps to perform delicate operations such as dissecting, grasping, and manipulating tissue. However, with existing forceps, surgeons must continuously hold the handle to ensure the stability of the grip, which increases hand fatigue, reduces the precision of tissue dissection and grasping, increases surgical difficulty, and decreases efficiency. Furthermore, electrocautery is used during surgery to cut tissue or achieve hemostasis. The operation of the electrocautery vaporizes tissue, generating surgical smoke that obscures the endoscopic lens, blurring the image and affecting the surgical procedure. If an external medical suction device is used to absorb the smoke, an additional suction tube needs to be inserted into the surgical area, which reduces the surgical space and increases the difficulty of the procedure. Therefore, the market urgently needs a multi-functional forceps to solve these problems. Summary of the Invention

[0006] This invention provides a multifunctional forceps for non-inflatable endoscopic thyroid surgery, which solves the problems of existing separation forceps, which require the operator to continuously grip the handle to ensure the stability of the clamping force, easily leading to increased hand fatigue for the operator. At the same time, the insertion of the suction tube during surgery reduces the surgical space, increasing the difficulty of the surgery and reducing the efficiency of the surgery.

[0007] This application provides the following technical solution: a multi-functional forceps for non-inflatable endoscopic thyroid surgery, including a handle, a cannula, and a conical tube fixedly connected between the handle and the cannula. The handle includes a mounting shell fixed to the conical tube, a main grip fixed to the mounting shell, and a secondary grip rotatably connected to the mounting shell. The head of the cannula is fixed with a clamping mechanism.

[0008] It also includes a locking mechanism, which includes a drive assembly fixed to the mounting housing, a locking block assembly located inside the sleeve head, and a metal rod fixed between the drive assembly and the locking block assembly. The locking block assembly includes a locking block that is slidably connected inside the sleeve head.

[0009] The clamping mechanism includes a main clamp fixed to the end of the sleeve, a secondary clamp rotatably connected to the head of the sleeve, and a connecting rod pivotally connected between the secondary clamp and the secondary handle. The fixing direction of the main clamp is parallel to the axial direction of the sleeve. The secondary handle is used to control the rotation of the secondary clamp, so that the main clamp and the secondary clamp are in an open state or a clamping state. The main clamp and the secondary clamp are provided with meshing teeth on opposite sides.

[0010] The sleeve has an opening at its head, and the sleeve is connected to the conical tube. A round tube joint is connected to the top of the conical tube, and a tube cap is threaded to the end of the round tube joint.

[0011] The drive assembly can drive the locking block to press against the secondary chuck, so that the main chuck and the secondary chuck remain in a clamped and locked state. Beneficial effects

[0012] 1. In non-pneumatic endoscopic thyroid surgery, surgeons need to frequently perform delicate operations such as separating, grasping, and manipulating tissues using dissecting forceps. This solution controls the secondary grip to drive the secondary chuck to rotate, enabling the main and secondary chucks to grasp and separate soft tissues. The main and secondary chucks are equipped with interlocking teeth on opposite sides, which provides greater stability and precision when grasping tissues.

[0013] 2. The drive component can drive the locking block to press against the secondary chuck, keeping the main chuck and the secondary chuck locked in a clamping state. This eliminates the need for doctors to hold the main handle and secondary handle tightly for extended periods to control the clamping force of the chuck, ensuring clamping stability, reducing hand fatigue during operation, improving surgical precision, and reducing surgical difficulty.

[0014] 3. A round tube connector is connected to the top of the conical tube. The round tube connector can be connected to a medical suction device through a connecting tube. The negative pressure suction generated by the suction device can draw the smoke generated during the use of the electrosurgical unit into the cannula through the opening at the head of the cannula, and then be sucked out by the suction device through the round tube connector on the conical tube. This prevents the smoke from obscuring the lens of the endoscope, improves the clarity of the image displayed by the endoscope, and facilitates the improvement of surgical precision. Moreover, the doctor can directly control the opening of the cannula head to be aligned with the area where the smoke needs to be discharged by holding the handle, which improves the convenience of operation. At the same time, it can also avoid the method of directly inserting the suction tube of the suction device into the surgical area for smoke discharge, which reduces the surgical space and helps to reduce the difficulty of the surgical operation.

[0015] 4. The round tube connector of this solution can be connected to a suction device. It is not only suitable for non-inflatable endoscopic thyroid surgery, but also for inflatable endoscopic thyroid surgery. By adjusting the suction force of the suction device, it can avoid excessive suction force that could cause the shape of the cavity to collapse. It has wide applicability.

[0016] 5. The main clamp of this application is fixed, and the clamping and separation of the main clamp and the secondary clamp are achieved only by rotating the secondary clamp. The opening range between the main clamp and the secondary clamp is smaller, which can save operating space, avoid damage to surrounding tissues caused by a large opening range of the clamp, and improve the convenience of surgical operation.

[0017] Furthermore, the drive assembly includes a main gear, a secondary gear, and a rack assembly fixed to the mounting housing, which are rotatably connected to the mounting housing respectively. The main gear and the secondary gear mesh with each other, and a portion of the main gear extends outside the mounting housing. The rack assembly includes a top plate fixed to the mounting housing and a rack slidably connected below the top plate. The teeth of the rack mesh with the secondary gear, and one end of the metal rod is fixedly connected to the end of the rack.

[0018] Beneficial effects: Since part of the main gear extends out of the mounting housing, the operator can hold the main handle and secondary handle with one hand and use the free fingers to turn the main gear. Turning the main gear drives the secondary gear to rotate, causing the rack to slide relative to the top plate. This causes the metal rod and the locking block of the clamping block assembly connected to the metal rod to press against the lower end of the secondary chuck, keeping the main chuck and secondary chuck in a locked clamping state, which can ensure the stability of the chuck when clamping.

[0019] Furthermore, the rack assembly also includes a front stop and a rear stop fixed inside the mounting housing. The front stop is located at the end where the rack connects to the metal rod, and the rear stop is located at the end of the rack away from the front stop.

[0020] Beneficial effects: The front and rear stops limit the range of motion of the rack, allowing it to move along a predetermined trajectory and range when the operator shifts the main gear, thereby improving the accuracy of operation, preventing the rack from falling off due to exceeding its sliding stroke, and enhancing the transmission stability of the rack assembly.

[0021] Furthermore, the locking block assembly also includes a support bar fixed inside the sleeve head, the locking block is slidably connected to the support bar, a tightening head is fixed to the side of the locking block near the secondary clamp, and the end of the locking block away from the tightening head is fixedly connected to a metal rod.

[0022] Beneficial effects: When the main gear in the drive assembly is turned, the driving force is transmitted to the locking block through the metal rod, so that the locking block can slide on the support bar. At the same time, the clamping head is driven to slide towards the secondary chuck and clamp the lower end of the secondary chuck, so that the secondary chuck and the main chuck are kept in a locked state of clamping.

[0023] Furthermore, the section of the auxiliary clamp located inside the sleeve opening is a bent section, which bends toward the side where the main clamp is located, and one end of the connecting rod is pivotally connected to the end of the bent section.

[0024] Beneficial effects: Since the fixed direction of the main chuck is parallel to the axis of the sleeve, the end of the auxiliary chuck located inside the sleeve opening is bent against the side where the main chuck is located. This allows the auxiliary chuck and the main chuck to be in close contact when the auxiliary chuck is driven by the auxiliary grip control linkage to maintain the clamping action, thereby improving the stability and firmness of the clamping.

[0025] Furthermore, the heads of the main chuck, the auxiliary chuck, and the clamping head are all arc-shaped.

[0026] Beneficial effects: The rounded head design of the main and auxiliary clamps helps reduce pressure and damage to surrounding tissues during surgical separation operations; it can significantly reduce surgical trauma and promote postoperative recovery; at the same time, the rounded head design of the clamping head facilitates smooth insertion into the lower end of the auxiliary clamp, improving the smoothness of locking the main and auxiliary clamps.

[0027] Furthermore, the locking mechanism also includes a limiting component fixed on the mounting shell. The limiting component includes a limiting block fixed inside the mounting shell, a limiting post fixed on the limiting block, a limiting tube slidably connected to the limiting post, a limiting compression spring sleeved on the rod of the limiting post, and a limiting ball fixed on the main gear. The end of the limiting tube is provided with a hemispherical groove, and the limiting ball can be inserted into the hemispherical groove of the limiting tube.

[0028] Beneficial effects: When it is necessary to lock the chuck, the limiting ball on the main gear is moved so that the limiting ball is engaged in the hemispherical groove at the end of the limiting tube. The elastic force of the limiting spring will press the limiting ball tightly, keeping the limiting ball in the hemispherical groove of the limiting tube, thereby limiting the main gear, fixing the position of the clamping head on the locking block, and locking the clamping state of the main chuck and the auxiliary chuck.

[0029] Attached Figure Description

[0030] Figure 1 is a front view of the structure of the present invention;

[0031] Figure 2 is an enlarged view of A in Figure 1.

[0032] Figure 3 is an enlarged view of B in Figure 1. Detailed Implementation

[0033] The following detailed description illustrates the specific implementation method:

[0034] The markings in the accompanying drawings include: mounting housing 1, secondary grip 2, main grip 3, positioning pin 131, sleeve 4, opening 41, main gear 5, limit ball 51, limit tube 52, limit post 53, limit block 54, secondary gear 6, rack 7, front stop 8, metal rod 9, connecting rod 10, rear stop 11, main chuck 12, secondary chuck 13, clamping head 14, locking block 15, support bar 16, conical tube 17, round tube connector 171, and top plate 18. Example

[0035] As shown in Figures 1 to 3, the multi-functional forceps for non-inflatable endoscopic thyroid surgery includes a handle, a cannula 4, and a conical tube 17 fixedly connected between the handle and the cannula 4. As shown in Figure 1, the handle includes a mounting shell 1 integrally formed with the conical tube 17, a main grip 3 integrally formed with the mounting shell 1, a secondary grip 2 rotatably connected to the mounting shell 1, a clamping mechanism fixed to the head of the cannula 4, and a locking mechanism located within the entire handle and cannula 4. Both the main grip 3 and the secondary grip 2 have rings for finger insertion. The head of the cannula 4 has an opening 41, and the cannula 4 communicates with the conical tube 17. A round tube connector 171 is also connected above the conical tube 17. A tube cap is threaded onto the end of the round tube connector 171 away from the conical tube 17. The tube cap facilitates sealing the round tube connector 171 when not in use to prevent foreign objects from falling in and blocking the passage.

[0036] The locking mechanism includes a drive assembly fixed to the mounting housing 1, a limit assembly, a locking block assembly fixed inside the head of the sleeve 4, and a metal rod 9 fixed between the drive assembly and the locking block assembly.

[0037] As shown in Figure 2, the drive assembly includes a main gear 5, a secondary gear 6 rotatably connected to the mounting housing 1, and a rack assembly fixed to the mounting housing 1. The main gear 5 and the secondary gear 6 mesh with each other, and a portion of the main gear 5 extends out of the mounting housing 1 near the main grip 3. This allows the operator to insert their thumb into the ring of the secondary grip 2, their middle or ring finger into the ring of the main grip 3, and their free index finger to rotate the main gear 5. The rack assembly includes a top plate 18 fixed to the mounting housing 1, a rack 7 slidably connected below the top plate 18, and a front stop 8 and a rear stop 11 fixed inside the mounting housing 1. A groove is provided below the top plate 18, and a protrusion is provided above the rack 7 that slidably connects to the groove. The rack 7 is located between the front stop 8 and the rear stop 11, and the two stops are used to achieve front and rear fixed-point positioning of the rack 7. The teeth of the rack 7 mesh with the secondary gear 6, and one end of the metal rod 9 is fixedly connected to the end of the rack 7 near the front stop 8.

[0038] As shown in Figure 3, the locking block assembly includes a support bar 16 fixed inside the head of the sleeve 4 and a locking block 15 slidably connected to the support bar 16; the locking block 15 is provided with a tightening head 14 at one end near the opening of the sleeve 4, and the locking block 15 away from the tightening head 14 is fixedly connected to the metal rod 9.

[0039] The limiting assembly includes a limiting block 54 fixed inside the mounting housing, a limiting post 53 fixed on the limiting block, a limiting tube 52 slidably connected to the limiting post, a limiting compression spring sleeved on the rod of the limiting post 53, and a limiting ball 51 fixed on the main gear 5. The two ends of the limiting compression spring are fixedly connected to the limiting tube 52 and the limiting block 54 respectively. The end of the limiting tube 52 is provided with a hemispherical groove, and the limiting ball can be inserted into the hemispherical groove of the limiting tube 52.

[0040] The clamping mechanism includes a main clamp 12 fixed to the end face of the sleeve 4, a secondary clamp 13 rotatably connected to the head of the sleeve 4, and a connecting rod 10 pivotally connected between the secondary clamp 13 and the secondary handle 2. The fixing direction of the main clamp 12 is parallel to the axial direction of the sleeve 4, and the heads of the main clamp 12 and the secondary clamp 13, as well as the upper head of the clamping head 14, are all arc-shaped, as shown in Figure 3. The main clamp 12 and the secondary clamp 13 are provided with interlocking teeth on opposite sides, which makes the tissue clamping more stable. The section of the secondary clamp 13 located inside the opening of the sleeve 4 is bent. The secondary chuck 13 is bent at a point where a positioning pin 131 is pivotally connected. The two ends of the positioning pin 131 are fixed to the inner wall of the sleeve 4 and bend upward toward the side where the main chuck 12 is located. One end of the connecting rod 10 is pivotally connected to the end of the bent section, and the end of the connecting rod 10 away from the secondary chuck 13 is pivotally connected to the end of the secondary handle 2 located inside the mounting housing 1. The pivot point is located above the rotating connection shaft between the secondary handle 2 and the mounting housing 1. By rotating the secondary handle 2, the rotational force can be transmitted through the connecting rod 10, thereby controlling the secondary chuck 13 to open or close relative to the main chuck 12.

[0041] The method of using this application is as follows:

[0042] In non-pneumatic endoscopic thyroid surgery, the multi-functional forceps are held as follows: the thumb is inserted into the ring of the secondary handle 2, and the middle or ring finger is inserted into the ring of the main handle 3, freeing the index finger to easily move the main gear 5. At this time, the secondary handle 2 can be controlled to drive the secondary clamp 13 to rotate, causing the secondary clamp 13 to open and close relative to the main clamp 12. This allows for the grasping and separation of soft tissues, or the removal of accessory nerves that might obstruct the surgery, improving the precision and convenience of the surgical procedure. When a clamping state needs to be maintained for a long time, first hold the secondary handle 2 to close the secondary chuck 13 relative to the main chuck 12. Then, use your index finger to move the main gear 5 in the direction of the arrow on the main gear 5 in Figure 2, so that the limiting ball 51 in Figure 2 is inserted into the hemispherical groove at the end of the limiting tube 52. At the same time, the secondary gear 6 drives the rack 7, metal rod 9, and locking block 15 to move towards the opening 41 of the sleeve 4. The arc surface of the clamping head 14 presses against the lower end of the secondary chuck, so that the main chuck 12 and the secondary chuck 13 are in a clamping and locking state (in Figures 2 and 3, the main chuck 12 and the secondary chuck 13 are already in a state of being pressed against by the clamping head 14). If it is necessary to release the locking state of the chuck, move the main gear 5 in the opposite direction of the arrow on the main gear 5 in Figure 2, so that the limiting ball 51 is disengaged from the hemispherical groove at the end face of the limiting tube 52, and the clamping head 14 is disengaged from below the secondary chuck 13, so that the clamping operation can be performed normally.

[0043] After opening the cap on the round tube connector 171, a medical suction device can be connected to the outside through the connecting tube. The negative pressure suction generated by the suction device can draw the smoke generated when the electrocautery is used during the operation into the cannula 4 through the opening 41 at the head of the cannula 4, and then be sucked out by the suction device through the round tube connector 171 on the conical tube 17.

[0044] The above are merely embodiments of the present invention. The invention is not limited to the fields covered by these embodiments, and common knowledge regarding specific structures and characteristics is not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A multi-functional forceps for non-pneumatic endoscopic thyroid surgery, comprising a handle, a cannula, and a conical tube fixedly connected between the handle and the cannula, wherein the handle includes a mounting shell fixed to the conical tube, a main grip fixed to the mounting shell, and a secondary grip rotatably connected to the mounting shell, and the head of the cannula is fixed with a clamping mechanism; characterized in that: It also includes a locking mechanism, which includes a drive assembly fixed to the mounting housing, a locking block assembly located inside the sleeve head, and a metal rod fixed between the drive assembly and the locking block assembly. The locking block assembly includes a locking block that is slidably connected inside the sleeve head. The clamping mechanism includes a main clamp fixed to the end of the sleeve, a secondary clamp rotatably connected to the head of the sleeve, and a connecting rod pivotally connected between the secondary clamp and the secondary handle. The fixing direction of the main clamp is parallel to the axial direction of the sleeve. The secondary handle is used to control the rotation of the secondary clamp, so that the main clamp and the secondary clamp are in an open state or a clamping state. The main clamp and the secondary clamp are provided with meshing teeth on opposite sides. The sleeve has an opening at its head, and the sleeve is connected to the conical tube. A round tube joint is connected to the top of the conical tube, and a tube cap is threaded to the end of the round tube joint. The drive assembly can drive the locking block to press against the secondary chuck, so that the main chuck and the secondary chuck remain in a clamped and locked state.

2. The multifunctional forceps for non-inflatable endoscopic thyroid surgery according to claim 1, characterized in that: The drive assembly includes a main gear, a secondary gear, and a rack assembly fixed to the mounting housing, which are rotatably connected to the mounting housing respectively. The main gear and the secondary gear mesh with each other, and a portion of the main gear extends outside the mounting housing. The rack assembly includes a top plate fixed to the mounting housing and a rack slidably connected below the top plate. The teeth of the rack mesh with the secondary gear, and one end of the metal rod is fixedly connected to the end of the rack.

3. The multifunctional forceps for non-inflatable endoscopic thyroid surgery according to claim 2, characterized in that: The rack assembly also includes a front stop and a rear stop fixed in the mounting housing. The front stop is located at the end where the rack connects to the metal rod, and the rear stop is located at the end of the rack away from the front stop.

4. The multifunctional forceps for non-inflatable endoscopic thyroid surgery according to claim 3, characterized in that: The locking block assembly also includes a support bar fixed inside the sleeve head, the locking block is slidably connected to the support bar, a tightening head is fixed to the side of the locking block near the secondary clamp, and the end of the locking block away from the tightening head is fixedly connected to a metal rod.

5. The multifunctional forceps for non-inflatable endoscopic thyroid surgery according to claim 4, characterized in that: The section of the auxiliary chuck located inside the sleeve opening is a bent section, which bends toward the side where the main chuck is located, and one end of the connecting rod is pivotally connected to the end of the bent section.

6. The multifunctional forceps for non-inflatable endoscopic thyroid surgery according to claim 5, characterized in that: The heads of the main chuck, the auxiliary chuck, and the clamping head are all arc-shaped.

7. The multifunctional forceps for non-inflatable endoscopic thyroid surgery according to claim 6, characterized in that: The locking mechanism also includes a limiting component fixed to the mounting housing. The limiting component includes a limiting block fixed inside the mounting housing, a limiting post fixed to the limiting block, a limiting tube slidably connected to the limiting post, a limiting compression spring sleeved on the rod of the limiting post, and a limiting ball fixed to the main gear. The end of the limiting tube is provided with a hemispherical groove, and the limiting ball can be inserted into the hemispherical groove of the limiting tube.

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