Blunt separating forceps

Abstract

The utility model provides a pair of blunt separating forceps. The pair of blunt separating forceps comprises a handle, an elastic tube, a driving piece, an inhaul cable, a sliding ring and two forceps flaps. One end of the elastic tube is connected to the handle, the other end of the elastic tube is provided with a connecting seat, the two clamp flaps are rotatably connected to the connecting seat, the two clamp flaps are provided with rotating action parts, and the rotating action parts are provided with a plurality of convex teeth. The driving piece is movably arranged at the end, away from the handle, of the elastic pipe and provided with a rack, and the rack is meshed with the rotating acting parts of the two clamp flaps respectively. The inhaul cable is slidably arranged in the elastic pipe in a penetrating mode, one end of the inhaul cable is connected to the driving piece, the sliding ring is slidably arranged on the handle, the sliding ring is in transmission connection with the other end of the inhaul cable, and the sliding ring slides along the handle and can drive the rack to move so as to drive the two blunt separating forceps to be opened or closed. According to the blunt separating forceps, a tooth transmission matching structure is adopted to control opening and closing of the forceps flaps, the structure is simple, the occupied space is small, and reliability is high.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a blunt separation forceps. Background Art

[0002] Endoscopic submucosal dissection (ESD) is a rapidly developing procedure under digestive endoscopy. Due to its low medical resource investment and excellent surgical results, it has become widely used by endoscopists. This allows more early-stage gastrointestinal cancers to be completely removed in one go under endoscopy, eliminating the pain of open surgery and organ removal. ESD tumor removal can achieve the same therapeutic effect as surgery.

[0003] Commonly used instruments for endoscopic submucosal dissection include blunt separation forceps, which usually include a cable and two jaws. A relatively complex transmission structure is used between the two jaws and the cable. For example, the two jaws and the cable are connected by a connecting rod assembly. When the cable is operated to move, the two jaws can be driven to open and close through the connecting rod assembly. The connecting rod assembly is large in size and requires a large space, which is not conducive to reducing the size of the end of the blunt separation forceps and is also not conducive to the arrangement of other structural parts. Summary of the Invention

[0004] In order to solve one of the above technical defects, a blunt separation forceps is provided in an embodiment of the present application.

[0005] This embodiment provides a blunt separation forceps, comprising:

[0006] handle;

[0007] an elastic tube, one end of which is connected to the handle, and the other end of which is provided with a connecting seat;

[0008] Two jaws, both of which are rotatably connected to the connecting seat, and both of which have a rotation action portion, each of which has a plurality of convex teeth;

[0009] a driving member, the driving member being movably disposed at an end of the elastic tube away from the handle, the driving member comprising a rack, the racks respectively meshing with the rotating action portions of the two jaws;

[0010] a cable, the cable being slidably disposed in the elastic tube, one end of the cable being connected to the driving member;

[0011] A slip ring is slidably disposed on the handle, and is transmission-connected to the other end of the pull cable. The slip ring slides along the handle to drive the rack to move, thereby driving the two jaws to open or close.

[0012] Optionally, the convex teeth are provided on the sides of the rotating action parts of the two jaws facing each other;

[0013] The rack is located between the rotational action parts of the two jaws, and has a plurality of convex teeth on both sides of the rack in the thickness direction to respectively engage with the rotational action parts of the two jaws.

[0014] Optionally, a blunt tooth is provided at one end of the jaw, and the rotation action part is provided at the other end of the jaw, the rotation action parts of the two jaws protrude toward each other, and the convex tooth is provided on the protruding side of the rotation action part.

[0015] Optionally, the protruding side of the rotating action portion has an arc surface with the rotation axis of the clamp flap as the center, and a plurality of the protruding teeth are arranged on the arc surface.

[0016] Optionally, an electrode seat is provided on the handle or the slip ring, and the electrode seat is electrically connected to the clamp petal.

[0017] Optionally, a rotation hole is provided on the rotation action portion;

[0018] The rotating shaft passes through the rotating hole, and the rotating shaft is connected to the connecting seat.

[0019] Optionally, the connecting seat has two support arms arranged at intervals;

[0020] The rotational action parts of the two clamp flaps are both located between the two support arms, and the two ends of the rotating shaft passing through the rotational action parts of the clamp flaps are respectively connected to the two support arms.

[0021] Optionally, a sliding sleeve is provided at one end of the elastic tube away from the handle, the connecting seat is provided on the sliding sleeve, and the sliding sleeve has a sliding groove communicating with the lumen of the elastic tube;

[0022] The driving member includes a sliding rod connected to the rack, and the sliding rod is slidably arranged in the sliding groove;

[0023] The rack and the cable are connected to two ends of the slide bar respectively.

[0024] Optionally, the rack and the slide bar are integrally formed;

[0025] Alternatively, the rack and the sliding rod are fixed by welding.

[0026] Optionally, the slide bar has a slot;

[0027] The pull cable is inserted into the slot and welded to the slide bar.

[0028] Optionally, the elastic tube includes a first tube body and a second tube body, and the outer diameter of the first tube body is smaller than that of the second tube body;

[0029] The first tube is connected to the handle, and the second tube is connected to an end of the first tube away from the handle;

[0030] The sliding sleeve is connected to the second tube body, and the sliding sleeve partially extends into the interior of the second tube body.

[0031] By adopting the above technical solution, this application has the following beneficial effects:

[0032] The blunt separation forceps of the present application adopt a tooth transmission matching structure to control the opening and closing of the forceps petals. Compared with the traditional connecting rod assembly transmission structure, the tooth transmission structure has the advantages of simple structure, small space occupation and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 A front view of the blunt separation forceps provided in an embodiment of the present application is shown;

[0035] Figure 2 A cross-sectional view showing a partial structure of the blunt separation forceps provided in an embodiment of the present application;

[0036] Figure 3 A schematic diagram showing the two jaws of the blunt separation forceps provided in an embodiment of the present application are in an open state.

[0037] Figure numerals: 1. handle; 2. elastic tube; 21. first tube body; 22. second tube body; 23. sliding sleeve; 3. driving member; 31. rack; 32. sliding rod; 4. jaws; 41. rotating action part; 411. convex tooth; 412. rotating hole; 5. cable; 6. slip ring; 7. support arm. DETAILED DESCRIPTION

[0038] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0039] In the description of the present application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0040] In this application and its embodiments, unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0041] In the present application and its embodiments, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] See also Figures 1 to 3 As shown, an embodiment of the present application provides a blunt separation forceps, which can be used for blunt separation, comprising: a handle 1, an elastic tube 2, a driving member 3, a cable 5, a slip ring 6, and two jaws 4. The elastic tube 2 is connected to the handle 1 at one end, and a connecting seat is provided at the other end of the elastic tube. The two jaws 4 are rotatably connected to the connecting seat. Each of the jaws 4 has a rotational action portion 41, and the rotational action portion 41 has a plurality of protruding teeth 411. The driving member 3 is movably provided at the end of the elastic tube 2 facing away from the handle 1. The driving member 3 has a rack 31, and the rack 31 respectively engages with the rotational action portion 41 of the two jaws 4. The cable 5 is slidably provided in the elastic tube 2, and one end of the cable 5 is connected to the driving member 3. The slip ring 6 is slidably provided in the handle 1 and is in transmission connection with the other end of the cable 5. The slip ring 6 slides along the handle 1, driving the rack 31 to move, thereby driving the two jaws 4 to open or close.

[0043] The operator holds the handle 1 and slides the slip ring 6 when it is necessary to control the opening or closing of the two jaws 4. The slip ring 6 will drive the cable 5 to slide along the elastic tube 2, and the cable 5 will drive the driving member 3 to move. The rack 31 of the driving member 3 can drive the rotating action parts 41 of the two jaws 4 to rotate in the opposite direction, so that the two jaws 4 move closer to each other or away from each other to perform the opening or closing action.

[0044] The blunt separation forceps of the present application adopts a tooth transmission matching structure to control the opening and closing of the forceps petals 4. Compared with the traditional connecting rod assembly transmission structure, the tooth transmission structure has the advantages of simple structure, small space occupation and high reliability.

[0045] In some possible implementations, see Figure 2 As shown, the protruding teeth 411 are provided on the facing sides of the rotating portions 41 of the two jaws 4. The rack 31 is located between the rotating portions 41 of the two jaws 4. Both sides of the rack 31 along the thickness direction have multiple protruding teeth to engage with the rotating portions 41 of the two jaws 4. The two jaws 4 are located on either side of the rack 31. Under the pulling or pushing action of the cable 5, the rack 31 slides along the end of the elastic tube 2, driving the two jaws 4 to open or close.

[0046] In some possible implementations, blunt teeth are provided at one end of the jaw 4, and the rotational action portion 41 is provided at the other end of the jaw 4. The rotational action portions 41 of the two jaws 4 protrude toward each other, and the protruding teeth 411 are provided on the protruding side of the rotational action portion 41. The rotational action portion 41 of the jaw 4 protrudes toward the rack 31, allowing smooth engagement with the rack 31 to achieve power transmission.

[0047] In some possible implementations, the protruding side of the rotational action portion 41 has an arc surface with the rotation axis of the jaw 4 as the center, and the arc surface is provided with a plurality of protruding teeth 411. The arc surface is sequentially provided with a plurality of protruding teeth 411 to form an arc-shaped rack 31.

[0048] In some possible embodiments, an electrode holder may be provided on the handle 1 or the slip ring 6, and the electrode holder is electrically connected to the forceps petal 4. For example, the cable 5 may be a conductor, and the electrode holder is connected to the cable 5, thereby achieving electrical connection with the forceps petal 4. When the electrode holder is connected to an external power source, the blunt separation forceps of the present application can be used to perform tissue electrical cutting and electrocoagulation hemostasis operations.

[0049] In some possible implementations, see Figure 2 As shown, a rotation hole 412 is formed on the rotation action portion 41 , a rotation shaft is passed through the rotation hole 412 , and the rotation shaft is connected to the connection seat.

[0050] Specific, combined Figure 2 and Figure 3 As shown, the connecting seat has two support arms 7 arranged at intervals, the rotating action parts 41 of the two jaws 4 are located between the two support arms 7, and the two ends of the rotating shaft passing through the rotating action part 41 of the jaws 4 are respectively connected to the two support arms 7.

[0051] In some possible implementations, see Figure 2 As shown, a sliding sleeve 23 is provided at the end of the elastic tube 2 facing away from the handle 1. The connecting seat is provided on the sliding sleeve 23, which is fixed to the elastic tube 2. The sliding sleeve 23 has a sliding groove that communicates with the lumen of the elastic tube 2. The driving member 3 includes a sliding rod 32 connected to the rack 31. The sliding rod 32 is slidably provided in the sliding groove. The rack 31 and the cable 5 are respectively connected to the ends of the sliding rod 32. The sliding sleeve 23 can be made of a hard and wear-resistant structure.

[0052] The rack 31 and the slide bar 32 may be integrally formed. The rack 31 and the slide bar 32 may also be welded together. This application does not limit the connection method between the rack 31 and the slide bar 32.

[0053] The slide bar 32 has a slot, the cable 5 is inserted into the slot, and the cable 5 is welded to the slide bar 32 .

[0054] In some possible embodiments, combined Figure 1 and Figure 2 As shown, the elastic tube 2 includes a first tube body 21 and a second tube body 22. The outer diameter of the first tube body 21 is smaller than that of the second tube body 22. The first tube body 21 is connected to the handle 1, and the second tube body 22 is connected to the end of the first tube body 21 facing away from the handle 1. The sliding sleeve 23 is connected to the second tube body 22 and partially extends into the interior of the second tube body 22. The second tube body 22 has a large inner diameter, which facilitates the installation of the sliding sleeve 23 and the connecting seat.

[0055] The disclosure above provides many different embodiments or examples for realizing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0056] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0057] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A blunt separation forceps, characterized in that: include: handle; an elastic tube, one end of which is connected to the handle, and the other end of which is provided with a connecting seat; Two jaws, both of which are rotatably connected to the connecting seat, and both of which have a rotation action portion, each of which has a plurality of convex teeth; a driving member, the driving member being movably disposed at an end of the elastic tube away from the handle, the driving member comprising a rack, the racks respectively meshing with the rotating action portions of the two jaws; a cable, the cable being slidably disposed in the elastic tube, one end of the cable being connected to the driving member; A slip ring is slidably disposed on the handle, and is transmission-connected to the other end of the pull cable. The slip ring slides along the handle to drive the rack to move, thereby driving the two jaws to open or close.

2. The blunt separation forceps according to claim 1, characterized in that The convex teeth are provided on the sides of the rotating action parts of the two clamp petals facing each other; The rack is located between the rotational action parts of the two jaws, and has a plurality of convex teeth on both sides of the rack in the thickness direction to respectively engage with the rotational action parts of the two jaws.

3. The blunt separation forceps according to claim 2, characterized in that: Blunt teeth are provided at one end of the clamp flap, and the rotation action part is provided at the other end of the clamp flap. The rotation action parts of the two clamp flaps protrude toward each other, and the protruding teeth are provided on one side of the protruding rotation action part.

4. The blunt separation forceps according to claim 3, characterized in that: The protruding side of the rotation action portion has an arc surface with the rotation axis of the clamp petal as the center, and a plurality of protruding teeth are arranged on the arc surface.

5. The blunt separation forceps according to claim 1, characterized in that: An electrode seat is provided on the handle or the slip ring, and the electrode seat is electrically connected to the clamp petal.

6. The blunt separation forceps according to claim 1, characterized in that: A rotation hole is provided on the rotation action portion; The connecting seat has two support arms arranged at intervals; The rotation action parts of the two clamp flaps are both located between the two support arms, the rotating shaft passes through the rotating hole, and the two ends of the rotating shaft are respectively connected to the two support arms.

7. The blunt separation forceps according to claim 1, characterized in that: A sliding sleeve is provided at one end of the elastic tube away from the handle, the connecting seat is provided on the sliding sleeve, and the sliding sleeve has a sliding groove communicating with the lumen of the elastic tube; The driving member includes a sliding rod connected to the rack, and the sliding rod is slidably arranged in the sliding groove; The rack and the cable are connected to two ends of the slide bar respectively.

8. The blunt separation forceps according to claim 7, characterized in that: The rack and the slide bar are integrally formed; Alternatively, the rack and the sliding rod are fixed by welding.

9. The blunt separation forceps according to claim 8, characterized in that: The slide bar has a slot; The pull cable is inserted into the slot and welded to the slide bar.

10. The blunt separation forceps according to claim 7, characterized in that: The elastic tube includes a first tube body and a second tube body, wherein the outer diameter of the first tube body is smaller than that of the second tube body; The first tube is connected to the handle, and the second tube is connected to an end of the first tube away from the handle; The sliding sleeve is connected to the second tube body, and the sliding sleeve partially extends into the interior of the second tube body.

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