Radio frequency endoscope electrode tissue scissors

Abstract

The utility model discloses a pair of radio frequency endoscope electrode tissue scissors, which comprises two connecting parts and blades arranged at the tail ends of the two connecting parts, the two blades are rotationally arranged through a scissors shaft, a mounting opening is formed in the upper surface of each blade and located at the position of a cutting edge in a penetrating manner, and extension openings are formed in the two ends of the inner surface of each mounting opening. The movable shearing mechanism comprises a movable shearing knife located between the two extending openings, a round corner is formed in the side, away from the inclined face, of the outer surface of the movable shearing knife, and an adapter shaft is fixedly arranged in the movable shearing knife and located at the circle center position of the round corner. And a supporting and positioning mechanism. The rotatable movable shearing mechanisms are arranged at the cutting edges of the blades, the cutting edges of the two movable shearing knives can be in close fit with the lower surfaces in the mode that the magnetic sheets attract one another, and therefore during frequent shearing of the two movable shearing knives, the cutting edges of the two movable shearing knives are not prone to generating a gap due to loosening of the shearing shaft part, and the shearing efficiency is improved. And the friction force at the joint is increased.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to radiofrequency endoscopic electrode tissue scissors. Background Technology

[0002] A search revealed Chinese patent CN211433168U, which discloses a laparoscopic tissue scissor comprising a transmission assembly, a blade assembly, and a handle assembly. The transmission assembly includes an installation tube, a transmission rod, a first push rod, and a second push rod. The blade assembly includes a first blade and a second blade. The handle assembly includes a first handle and a second handle. The installation tube is sleeved outside the transmission rod. The first and second push rods are located at one end of the transmission rod. One end of the first push rod is hinged to the end of the transmission rod, and the other end of the first push rod is hinged to one end of the first blade. One end of the second push rod is hinged to one end of the transmission rod, and the other end of the second push rod is hinged to one end of the second blade. Both the first and second blades are hinged to the end of the sleeve inside the sleeve. The first handle is fixedly connected to the installation tube, and one end of the second handle is hinged to the transmission rod. The first handle and the second handle are also hinged. This design features a simple transmission structure, is not easily damaged, and can reduce postoperative discomfort for patients.

[0003] As mentioned above, most existing radiofrequency endoscopic electrode tissue scissors use a handle to pull a transmission rod to achieve the cutting function. Since the two blades are fixed to each other by a hinge, the endoscopic tissue scissors inevitably wear during frequent cutting. The cutting edges of the two blades are prone to gaps due to loosening of the hinge, which reduces the friction at the joint and reduces the tightness between the two cutting edges, thus affecting the cutting effect. Therefore, radiofrequency endoscopic electrode tissue scissors are provided. Utility Model Content

[0004] The purpose of this utility model is to provide a radiofrequency endoscopic electrode tissue scissor to solve the problem mentioned in the background art that the endoscopic tissue scissors inevitably wear during frequent cutting, resulting in a decrease in the tightness between the two cutting edges and affecting the cutting effect. To achieve the above objective, the specific technical solution of this utility model is as follows: a radiofrequency endoscopic electrode tissue scissor, including two connecting parts and blades installed at the ends of each connecting part, the two blades being rotatably mounted by a cutting shaft, the upper surface of each blade having a through-hole at the cutting edge, and both ends of the inner surface of the mounting hole having extension openings, and further including: a movable cutting mechanism located inside the mounting hole, the movable cutting mechanism including a movable cutting blade located between the two extension openings, the outer surface of the movable cutting blade having a rounded corner on the side away from the inclined surface, and a connecting shaft fixedly installed inside the movable cutting blade at the center of the rounded corner;

[0005] A support and positioning mechanism located inside the extension opening and used to fix the movable shearing mechanism.

[0006] Preferably, the upper surface of the movable shearing blade is flush with the upper surface of the blade, the lower surface of the movable shearing blade is flush with the lower surface of the blade, the inclined surface of the movable shearing blade is flush with the inclined surface of the blade, and the cutting edge of the movable shearing blade is in the same position as the cutting edge of the blade.

[0007] Preferably, both ends of the adapter shaft extend to the outside of the movable shearing blade, and a round buckle is fixedly provided in the middle of both ends of the adapter shaft, the round buckle having a hemispherical structure design.

[0008] Preferably, the lower surface of the movable shearing blade has multiple equally spaced storage openings at the cutting edge, and a magnetic sheet is fixedly installed inside the storage opening, with the lower surface of the magnetic sheet being flush with the lower surface of the movable shearing blade.

[0009] Preferably, the support and positioning mechanism includes a fixed seat fixedly disposed inside the extension opening and corresponding to the position of the adapter shaft, the outer end of the fixed seat having a circular opening corresponding to the position of the adapter shaft, and the adapter shaft being rotatably disposed within the circular opening.

[0010] Preferably, the inner surface of the circular opening is provided with a buckle corresponding to the position of the circular buckle, and the buckle and the fixing seat are elastically set by a fastening spring. The buckle has a hemispherical structure design, and the middle of the buckle has a sleeve for wrapping the circular buckle. The circular buckle is rotatably set in the sleeve.

[0011] Preferably, a guide rod is fixedly provided in the middle of the outer surface of the buckle, and a guide hole corresponding to the position of the guide rod is opened inside the fixing seat, and the end of the guide rod extends into the guide hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the radiofrequency endoscopic electrode tissue scissor...

[0013] This invention features a rotatable shearing mechanism on the blade edge. By using multiple magnetic plates to attract each other, the blade edges and lower surfaces of the two movable shearing blades can maintain a tight fit. This prevents gaps from forming due to loosening of the shear shaft during frequent shearing, increases the friction at the joint, improves the tightness between the two blade edges, and ensures the shearing effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of this utility model.

[0019] In the picture:

[0020] 100. Connecting part; 200. Shear shaft; 300. Blade; 400. Extension port; 500. Mounting port; 600. Movable shearing mechanism; 601. Movable shearing blade; 602. Round buckle; 603. Adapter shaft; 604. Storage port; 605. Magnetic plate; 700. Support and positioning mechanism; 701. Fixed base; 702. Fastening spring; 703. Buckle sleeve; 704. Sleeve opening; 705. Round opening; 706. Guide hole; 707. Guide rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution: a radiofrequency endoscopic electrode tissue scissor, including two connecting parts 100 and blades 300 disposed at the ends of the two connecting parts 100. The two blades 300 are distributed in a cross pattern, and the lower surfaces of the two blades 300 are in contact. The two blades 300 are rotatably disposed by a scissor shaft 200. As prior art, this invention will not be described in detail. In this device, an installation port 500 is provided through the upper surface of the blade 300 at the cutting edge position, and extension ports 400 are provided at both ends of the inner surface of the installation port 500. It also includes: a movable cutting mechanism 600 located inside the installation port 500; and a support and positioning mechanism 700 located inside the extension ports 400 for fixing the movable cutting mechanism 600.

[0023] Specifically, the movable shearing mechanism 600 includes a movable shearing blade 601 located between the two extension ports 400. The upper surface of the movable shearing blade 601 is flush with the upper surface of the blade 300, and the lower surface of the movable shearing blade 601 is flush with the lower surface of the blade 300. The inclined surface of the movable shearing blade 601 is also flush with the inclined surface of the blade 300. The cutting edge of the movable shearing blade 601 is aligned with the cutting edge of the blade 300. A rounded corner is provided on the outer surface of the movable shearing blade 601 away from the inclined surface to ensure normal rotation of the movable shearing blade 601 and prevent jamming. A connecting shaft 60 is fixedly installed inside the movable shearing blade 601 at the center of the rounded corner. 3. Both ends of the adapter shaft 603 extend to the outside of the movable shearing blade 601, and the extension length is the same. A round buckle 602 is fixedly installed in the middle of both ends of the adapter shaft 603. The round buckle 602 has a hemispherical structure design. Multiple storage openings 604 are opened on the lower surface of the movable shearing blade 601 at the cutting edge, and magnetic plates 605 are fixedly installed inside the storage openings 604. These magnetic plates 605 are used to attract the lower surface of the other movable shearing blade 601, so that the lower surfaces and cutting edges of the two movable shearing blades 601 always keep in close contact, increasing the friction at the joint. The lower surface of the magnetic plate 605 is flush with the lower surface of the movable shearing blade 601.

[0024] Specifically, the support positioning mechanism 700 includes a fixed base 701 fixedly disposed inside the extension opening 400 and corresponding to the position of the adapter shaft 603. The outer end of the fixed base 701 has a circular opening 705 corresponding to the position of the adapter shaft 603. The adapter shaft 603 is rotatably disposed within the circular opening 705. The inner surface of the circular opening 705 is provided with a buckle 703 corresponding to the position of the buckle 602. The buckle 703 and the fixed base 701 are elastically connected by a fastening spring 702. The buckle 703 has a hemispherical structure design. The middle part of the 3 has a sleeve opening 704 for wrapping the round buckle 602. The round buckle 602 is rotatably set in the sleeve opening 704. The outer surface of the buckle sleeve 703 has multiple gaps that are evenly distributed in a ring. A guide rod 707 is fixedly set in the middle of the outer surface of the buckle sleeve 703. The inside of the fixing base 701 has a guide hole 706 corresponding to the position of the guide rod 707. The guide rod 707 is used to guide and stabilize the buckle sleeve 703. The end of the guide rod 707 extends into the guide hole 706.

[0025] Based on the above, this utility model, by setting a rotatable movable shearing mechanism 600 on the cutting edge of the blade 300, utilizes the mutual attraction of multiple magnetic pieces 605 to ensure that the cutting edges and lower surfaces of the two movable shearing blades 601 maintain a tight fit. This prevents gaps from forming due to loosening of the shear shaft 200 during frequent shearing, increases the friction at the joint, improves the tightness between the two cutting edges, and ensures the shearing effect. Furthermore, by setting support and positioning mechanisms 700 at both ends of the movable shearing blades 601, this utility model ensures that the movable shearing blades 601 can rotate normally and facilitates disassembly, assembly, and maintenance of the movable shearing blades 601 by medical personnel.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

Claims

1. A radiofrequency endoscopic electrode tissue scissor, comprising two connecting portions (100) and blades (300) mounted at the ends of each of the connecting portions (100), wherein the two blades (300) are rotatably disposed via a scissor shaft (200), characterized in that, The blade (300) has a through-hole (500) on its upper surface at the cutting edge, and extension openings (400) are provided at both ends of the inner surface of the mounting opening (500). The blade also includes: A movable shearing mechanism (600) located inside the mounting port (500) includes a movable shearing blade (601) located between two extension ports (400). The outer surface of the movable shearing blade (601) and the side away from the inclined surface are provided with rounded corners. A connecting shaft (603) is fixedly provided inside the movable shearing blade (601) and at the center of the rounded corner. A support positioning mechanism (700) located inside the extension port (400) and used to fix the movable shearing mechanism (600) is also provided.

2. The radiofrequency endoscopic electrode tissue scissors according to claim 1, characterized in that: The upper surface of the movable shearing blade (601) is flush with the upper surface of the blade (300), and the lower surface of the movable shearing blade (601) is flush with the lower surface of the blade (300). The inclined surface of the movable shearing blade (601) is flush with the inclined surface of the blade (300), and the cutting edge of the movable shearing blade (601) is in the same position as the cutting edge of the blade (300).

3. The radiofrequency endoscopic electrode tissue scissors according to claim 1, characterized in that: Both ends of the adapter shaft (603) extend to the outside of the movable shearing blade (601), and a round buckle (602) is fixedly provided in the middle of both ends of the adapter shaft (603). The round buckle (602) is designed with a hemispherical structure.

4. The radiofrequency endoscopic electrode tissue scissors according to claim 1, characterized in that: The lower surface of the movable shearing blade (601) and the position of the cutting edge are provided with a plurality of storage openings (604) that are equally spaced apart, and a magnetic sheet (605) is fixedly installed inside the storage opening (604). The lower surface of the magnetic sheet (605) is flush with the lower surface of the movable shearing blade (601).

5. The radiofrequency endoscopic electrode tissue scissors according to claim 1, characterized in that: The support positioning mechanism (700) includes a fixed seat (701) fixedly disposed inside the extension port (400) and corresponding to the position of the adapter shaft (603). The outer end of the fixed seat (701) is provided with a circular opening (705) corresponding to the position of the adapter shaft (603), and the adapter shaft (603) is rotatably disposed inside the circular opening (705).

6. The radiofrequency endoscopic electrode tissue scissors according to claim 5, characterized in that: The inner surface of the round opening (705) is provided with a buckle (703) corresponding to the position of the round buckle (602), and the buckle (703) and the fixing seat (701) are elastically set by a fastening spring (702). The buckle (703) is designed with a hemispherical structure, and the middle part of the buckle (703) is provided with a sleeve opening (704) for wrapping the round buckle (602). The round buckle (602) is rotatably set in the sleeve opening (704).

7. The radiofrequency endoscopic electrode tissue scissors according to claim 6, characterized in that: A guide rod (707) is fixedly provided in the middle of the outer surface of the buckle (703). A guide hole (706) corresponding to the position of the guide rod (707) is opened inside the fixing seat (701). The end of the guide rod (707) extends into the guide hole (706).

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