Bend ceramic ball bipolar jaw assembly and tissue closer

Abstract

The utility model discloses an elbow ceramic ball bipolar jaw assembly and a tissue closer. The elbow ceramic ball bipolar jaw assembly comprises a lower jaw assembly (1), an upper jaw assembly (2) and a lower jaw assembly (3), an upper jaw assembly (2); a sliding pin (3); a fixing pin (4); a sleeve (5); the lower jaw assembly (1) is a fixed jaw, and the upper jaw assembly (2) is a movable jaw; opening and closing of the upper jaw assembly (2) are controlled through a sliding pin (3), the sliding pin (3) is located in a groove (201), the included angle between the axis of the groove (201) and the horizontal plane is divided into two parts, and the included angle of the part close to the jaw tip end is larger than the included angle of the part away from the jaw tip end. The ceramic ball is fixedly arranged through the metal jaw sealing plate, a reasonable gap of the jaw sealing plate can be kept, the machining process is simple, and the structure is reliable. In addition, through the sectional type sliding pin groove included angle design, the jaw can be rapidly opened, and meanwhile small axial force is transmitted to the trigger by the jaw when the jaw is closed.

Description

Technical Field

[0001] This utility model belongs to the technical field of the medical device industry, and more specifically relates to a bent ceramic ball bipolar jaw assembly and a tissue closure device. Background Technology

[0002] Vascular closure devices rely on the mechanical action between the jaws to grasp and clamp blood vessel tissue, using mechanical clamping and electrical energy to close the clamped tissue. So-called "opening forceps" are typically used in open surgeries, while "endoscopic forceps" or "laparoscopic forceps" are used in minimally invasive endoscopic surgeries.

[0003] Vascular closure devices include an electrosurgical sealing plate that applies electrosurgical energy to the clamped tissue. By controlling the intensity of the electrosurgical energy applied to the tissue by the sealing plate, the surgeon can seal the vascular tissue.

[0004] Vascular sealing is a process that liquefies collagen and elastin in tissue, allowing them to reform into a fused mass while significantly reducing the boundaries between relative tissue structures. Cauterization involves using heat to destroy the tissue, while coagulation is the process of drying the tissue. Because vascular sealing procedures are not simply about cauterizing and coagulating tissue, two key mechanical parameters must be precisely controlled to achieve a proper seal in vascular tissue: the pressure applied to the tissue and the gap distance between the electrodes (i.e., the distance between the relative jaw members when closing around the tissue).

[0005] Numerous electrosurgical instruments for various open and endoscopic surgeries have been proposed in the past. To maintain an appropriate gap between the upper and lower jaws, Chinese patent application CN117179886A discloses a method of applying a ceramic coating between the two jaws. This typically involves spraying / brushing a layer of ceramic material onto a metal substrate, followed by high-temperature sintering to form the desired jaw assembly. Another approach is to injection mold bosses using high-temperature resistant plastic. The first method is complex, difficult to manufacture, and results in poor product consistency. The second method, due to the use of plastic as an insulating material, suffers from poor product reliability.

[0006] Therefore, it is very beneficial to develop a jaw assembly and tissue closure device that can maintain a reasonable gap between the jaw sealing plates. Utility Model Content

[0007] Based on the above reasons, this utility model aims to solve the aforementioned problems and provides a bent ceramic ball bipolar jaw assembly and a tissue closure device. Specifically, to achieve the purpose of this utility model, the following technical solution is proposed:

[0008] This utility model relates to a bipolar jaw assembly for a bent ceramic ball, comprising: a lower jaw assembly (1); an upper jaw assembly (2); a sliding pin (3); a fixing pin (4); and a sleeve (5); the lower jaw assembly (1) is a fixed jaw, and the upper jaw assembly (2) is a movable jaw; the lower jaw assembly (1) and the upper jaw assembly (2) are hinged together by the fixing pin (4); a cutting head is provided in the sleeve (5), and the lower jaw assembly (1) and the upper jaw assembly (2) have grooves for the cutting head to slide after being closed; the upper jaw assembly (2) and the lower jaw assembly (1) are curved and have slender tips, and both the upper jaw assembly (2) and the lower jaw assembly (1) are provided with metal jaws. The lower jaw assembly (1) and / or the lower jaw assembly includes a jaw metal support base (105), on which multiple metal jaw sealing plates (102) are provided. Grooves are provided in some of the metal jaw sealing plates (102), and multiple ceramic balls (101) are partially fixed in the grooves of the jaw sealing plates (102) and partially protrude from the surface of the jaw sealing plates (102). The opening and closing of the upper jaw assembly (2) is controlled by a sliding pin (3), which is located in a groove (201). The angle between the axis of the groove (201) and the horizontal plane is divided into two parts, with the angle near the jaw tip being greater than that away from the jaw tip. This utility model uses metal jaw sealing plates to fix ceramic balls, which can maintain a reasonable gap between the jaw sealing plates, and its processing technology is simple and the structure is reliable. Furthermore, this invention, through its segmented sliding pin groove angle design, enables the jaws to open quickly, while simultaneously transmitting a small axial force to the trigger when closed.

[0009] In a preferred embodiment of the present invention, the ceramic ball (101) is fixed in the groove of the jaw sealing plate (102) by sealant.

[0010] In a preferred embodiment of the present invention, an insulating jaw insulating gasket (103) is provided between the jaw metal support base (105) and the jaw sealing plate (102), and the jaw sealing plate (102) and the jaw insulating gasket (103) are fixed on the jaw metal support base (105) by jaw coating (104).

[0011] In a preferred embodiment of this utility model, the angle between the axis of the groove (201) and the horizontal plane is 18-25° for the portion near the tip of the jaws and 32-40° for the portion away from the tip of the jaws.

[0012] Another aspect of this utility model relates to a tissue closure device, which has the above-mentioned bent ceramic ball bipolar jaw assembly and an operating handle, wherein the bent ceramic ball bipolar jaw assembly and the operating handle are respectively located at both ends of the sleeve (5).

[0013] In a preferred embodiment of the present invention, the operating handle has a closing trigger (15) and a closing trigger spring (14). The closing trigger (15) controls the closing trigger spring (14), and the closing trigger spring (14) achieves the closing of the upper jaw assembly (2) and the lower jaw assembly (1) by controlling the movement of the sliding pin (3) in the groove (201).

[0014] In a preferred embodiment of the present invention, the operating handle also has an energy activation button (16), which is used to control the energization of the metal jaw sealing plate (102) in the upper jaw assembly (2) and the lower jaw assembly (1).

[0015] In a preferred embodiment of the present invention, the operating handle further includes a push-blade trigger (17), which is connected to the push-blade connecting rod (9) by a fixing pin (8), converting the swing of the push-blade trigger into the linear motion of the push-blade connecting rod. The push-blade connecting rod (9) drives the sliding ring (7) to move linearly in the sleeve (5), and the sliding ring (7) drives the cutting head to move linearly in the groove of the jaw assembly.

[0016] This utility model has at least the following beneficial effects:

[0017] (1) The present invention uses a metal jaw sealing plate to fix the ceramic ball, which can maintain a reasonable gap between the jaw sealing plate and its processing technology is simple and the structure is reliable.

[0018] (2) This utility model can achieve rapid opening of the jaws through the segmented sliding pin groove angle design, while the jaws transmit a small axial force to the trigger when closing. Attached Figure Description

[0019] Figure 1 : Schematic diagram of the bent ceramic ball bipolar jaw assembly and tissue closure device of this utility model embodiment.

[0020] Figure 2 : A schematic diagram of the shape of the upper jaw assembly (2) and the lower jaw assembly (1) in this embodiment of the present invention.

[0021] Figure 3 : A schematic diagram of the structure of the lower jaw assembly (1) in this embodiment of the present invention.

[0022] Figure 4 : A schematic diagram of the connection between the upper jaw assembly (2) and the sliding pin (3) in this embodiment of the present invention. Detailed Implementation

[0023] To further understand this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0024] Unless otherwise specified, the components involved in the embodiments of this utility model are commercially available products and can be purchased through commercial channels.

[0025] Example 1

[0026] This utility model discloses a curved ceramic ball bipolar jaw assembly and a tissue closure device. The curved ceramic ball bipolar jaw assembly includes: a lower jaw assembly (1); an upper jaw assembly (2); a sliding pin (3); a fixing pin (4); and a sleeve (5). The lower jaw assembly (1) is a fixed jaw, and the upper jaw assembly (2) is a movable jaw. The lower jaw assembly (1) and the upper jaw assembly (2) are hinged together by the fixing pin (4). A cutting head (not shown in the figure) is provided in the sleeve (5). After the lower jaw assembly (1) and the upper jaw assembly (2) are closed, they have a groove for the cutting head to slide (e.g., ...). Figure 1 (As shown).

[0027] like Figure 2 As shown, the upper jaw assembly (2) and the lower jaw assembly (1) are curved and have slender tips. Both the upper jaw assembly (2) and the lower jaw assembly (1) are provided with metal jaw sealing plates (102). After the upper jaw assembly (2) and the lower jaw assembly (1) are closed, the tissue is closed by the metal jaw sealing plates (102). After being powered on, the tissue is sealed by heating. After sealing, the sealed tissue is cut by sliding the cutting head.

[0028] like Figure 3As shown, the lower jaw assembly (1) includes a jaw metal support base (105), on which multiple metal jaw sealing plates (102) are provided. Grooves are provided in some of the metal jaw sealing plates (102), and a ceramic ball (101) is partially fixed in the groove of the jaw sealing plate (102), while the other part protrudes from the upper surface of the jaw sealing plate (102). An insulating jaw insulating gasket (103) is provided between the jaw metal support base (105) and the jaw sealing plate (102). The jaw sealing plate (102) and the jaw insulating gasket (103) are fixed to the jaw metal support base (105) by jaw coating (104). Processing technology: First, a 0.6mm diameter and 0.4mm deep pit is machined on the jaw sealing plate (102). The processing technology is stamping and machining. The second step is to bond the ceramic ball (101) into the recess of the jaw sealing plate (102). The third step is to process the jaw insulating gasket (103) using injection molding, and to process the jaw metal support seat (105) using MIMO (metal powder injection molding). The fourth step is to assemble the jaw sealing plate (102), jaw insulating gasket (103), and jaw metal support seat (105) as shown in the diagram. Figure 2 The assembly is placed in a plastic injection mold, and the injection jaws are wrapped with glue (104).

[0029] like Figure 4 The opening and closing of the upper jaw assembly (2) shown is controlled by a sliding pin (3), which is located in a groove (201). The angle between the axis of the groove (201) and the horizontal plane is divided into two parts: the part near the tip of the jaw has an angle of 35.5°, and the part away from the tip of the jaw has an angle of 21.5°. The purpose of this segmented angle design is to enable the upper jaw to open and close quickly by moving the trigger, while transmitting a small axial force to the trigger when closing.

[0030] like Figure 1 As shown, the tissue closure device includes, in addition to the aforementioned bent ceramic ball bipolar jaw assembly, a handle; the handle includes: a rotating wheel (6), a sliding ring (7); a fixing pin (8); a pusher rod (9); a fixing pin (10); a handle housing (11); a spring (12); a spring baffle (13); a closing trigger spring (14); a closing trigger (15); an energy activation button (16); and a pusher trigger (17).

[0031] The operator compresses the spring (12) by closing the trigger (15). The spring (12) drives the inner sleeve shaft to move axially. The inner sleeve shaft and the sliding pin (3) are integral parts. The movement of the sliding pin (3) in the groove (201) realizes the closure of the upper jaw assembly (2) and the lower jaw assembly (1). Since the upper jaw assembly (2) and / or the lower jaw assembly (1) are provided with ceramic balls (101) protruding from the surface of the metal jaw sealing plate (102), the tissue will not be excessively squeezed.

[0032] After the upper jaw assembly (2) and the lower jaw assembly (1) are closed, the operator controls the metal jaw sealing plate (102) in the upper jaw assembly (2) and the lower jaw assembly (1) to be energized by the energy activation button (16), so as to heat the tissue and close the tissue.

[0033] Afterwards, the operator can control the pusher trigger (17), which is connected to the pusher linkage (9) through the fixing pin (8). The swing of the pusher trigger is converted into the linear motion of the pusher linkage. The pusher linkage (9) drives the sliding ring (7) to move linearly in the sleeve (5). The sliding ring (7) drives the cutting head to move linearly in the groove of the jaw assembly, thereby realizing the tissue cutting function.

[0034] The preferred embodiments of this utility model have been described above, but they are not intended to limit the scope of this utility model. Those skilled in the art can make improvements and changes to the embodiments disclosed herein without departing from the scope and spirit of this utility model.

Claims

1. A bipolar jaw assembly for bent ceramic balls, characterized in that, The bent ceramic ball bipolar jaw assembly includes: a lower jaw assembly (1); an upper jaw assembly (2); a sliding pin (3); a fixing pin (4); and a sleeve (5); the lower jaw assembly (1) is a fixed jaw, and the upper jaw assembly (2) is a movable jaw; the lower jaw assembly (1) and the upper jaw assembly (2) are hinged together by the fixing pin (4); the sleeve (5) is provided with a cutting head, and the lower jaw assembly (1) and the upper jaw assembly (2) have grooves for the cutting head to slide after they are closed; the upper jaw assembly (2) and the lower jaw assembly (1) are curved bends with slender tips, and both the upper jaw assembly (2) and the lower jaw assembly (1) are provided with metal jaw sealing plates (102). The lower jaw assembly (1) and / or the lower jaw assembly includes a jaw metal support base (105), on which a plurality of metal jaw sealing plates (102) are provided. A groove is provided in a portion of the metal jaw sealing plate (102), and a plurality of ceramic balls (101) are partially fixed in the groove of the jaw sealing plate (102) and the other part protrudes from the surface of the jaw sealing plate (102). The opening and closing of the upper jaw assembly (2) is controlled by a sliding pin (3), which is located in a groove (201). The angle between the axis of the groove (201) and the horizontal plane is divided into two parts, with the angle of the part closer to the jaw tip being greater than that of the part farther from the jaw tip.

2. The elbow ceramic ball bipolar jaw assembly according to claim 1, characterized in that, The ceramic ball (101) is fixed in the groove of the jaw sealing plate (102) by sealant.

3. The elbow ceramic ball bipolar jaw assembly according to claim 1, characterized in that, An insulating jaw gasket (103) is provided between the jaw metal support base (105) and the jaw sealing plate (102). The jaw sealing plate (102) and the jaw insulating gasket (103) are fixed to the jaw metal support base (105) by jaw coating (104).

4. The elbow ceramic ball bipolar jaw assembly according to claim 1, characterized in that, The angle between the axis of the groove (201) and the horizontal plane is 18-25° for the part near the tip of the jaws and 32-40° for the part far from the tip of the jaws.

5. A tissue closure device, characterized in that, The tissue closure device has a bent ceramic ball bipolar jaw assembly as described in any one of claims 1-4, and also has an operating handle, wherein the bent ceramic ball bipolar jaw assembly and the operating handle are located at both ends of the sleeve (5).

6. The tissue closure device according to claim 5, characterized in that, The operating handle has a closing trigger (15) and a closing trigger spring (14). The closing trigger (15) controls the closing trigger spring (14). The closing trigger spring (14) achieves the closing of the upper jaw assembly (2) and the lower jaw assembly (1) by controlling the movement of the sliding pin (3) in the groove (201).

7. The tissue closure device according to claim 5, characterized in that, The operating handle also has an energy activation button (16), which is used to control the energization of the metal jaw sealing plate (102) in the upper jaw assembly (2) and the lower jaw assembly (1).

8. The tissue closure device according to claim 5, characterized in that, The operating handle also has a push-blade trigger (17), which is connected to the push-blade connecting rod (9) by a fixing pin (8). The swing of the push-blade trigger is converted into the linear motion of the push-blade connecting rod. The push-blade connecting rod (9) drives the sliding ring (7) to move linearly in the sleeve (5). The sliding ring (7) drives the cutting head to move linearly in the groove of the jaw assembly.

Images