Cut structure and bendable vocal cord polyp cut scissors

Abstract

The utility model relates to the technical field of medical instruments, in particular to a pair of bendable vocal cord polyp biting scissors with a biting structure, which comprises a fixed forceps head, a movable forceps head, a first blade, a second blade, a fixed forceps handle, a movable forceps handle, a pull rod, an outer tube and a fixing component. The pull rod can be driven to pull the movable clamp head to swing to be close to the fixed clamp head by kneading the movable handle, when the movable clamp head swings to be close to the fixed clamp head, the first blade is close to the second blade and abuts against the second blade, a polyp can be directly cut off in a biting mode, and the working process is similar to that of nail scissors. Compared with a mouth-to-mouth occlusion type forceps head in the prior art, the mouth-to-mouth occlusion type forceps head has the advantages that the mouth-to-mouth occlusion process is smoother, the vocal cord mucous membrane of a lesion-free part is not easily pulled, avulsed and damaged, the cutting edges of the first blade and the second blade are linear, and the cutting edges face inwards, so that the forceps head is not easy to scratch a patient in the use process, and the operation is convenient. Therefore, the safety in the operation process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a biting and cutting structure and a bendable vocal cord polyp biting and cutting scissors. Background Art

[0002] Vocal cord polyps are benign hyperplastic lesions in the superficial layer of the lamina propria of the vocal cords, and are also a special type of chronic laryngitis. The main treatment method is surgical resection.

[0003] The tool often used in the treatment of vocal cord polyps resection is the vocal cord polyp biting forceps. However, most of the existing vocal cord polyp biting forceps adopt the clamping head of the opposite mouth biting type. The head of the forceps is not sharp, and it is easy to pull and tear the vocal cord polyps during the operation, damaging the vocal cord mucosa of the non-lesion part. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a biting and cutting structure and a bendable vocal cord polyp biting and cutting scissors, so as to solve the technical problem that the clamping head of the opposite mouth biting type vocal cord polyp biting forceps in the prior art is not sharp, and it is easy to pull and damage the vocal cord mucosa of the non-lesion part during the operation.

[0005] The utility model is realized through the following technical solutions:

[0006] A biting and cutting structure, comprising a biting and cutting part. The biting and cutting part includes a fixed clamping head and a movable clamping head hinged to the fixed clamping head. The opposite sides of the fixed clamping head and the movable clamping head far from the connection end are respectively fixedly connected with a first blade and a second blade. The cutting edges of the first blade and the second blade are straight-line structures parallel to each other, and the cutting edge of the first blade is located on the rotation track of the cutting edge of the second blade. By rotating the movable clamping head, the second blade can be driven to approach or move away from the first blade.

[0007] Further, first through holes are respectively opened on the opposite sides of the movable clamping head and the fixed clamping head, and the two first through holes respectively penetrate through the movable clamping head and the fixed clamping head.

[0008] Further, second through holes are respectively opened on the sides of the first blade and the second blade facing the fixed clamping head, and the two second through holes respectively penetrate through the first blade and the second blade.

[0009] A bendable vocal cord polyp biting and cutting scissors, comprising a holding part and a connecting part for connecting the holding part and the biting and cutting part. The holding part includes a fixed clamping handle and a movable clamping handle hinged to the fixed clamping handle;

[0010] The connecting part includes an outer tube fixedly arranged on the fixed clamping handle, and the other end of the outer tube is fixedly connected with the fixed clamping head;

[0011] A pull rod is passed through the outer tube, one end of the pull rod is connected to the movable clamp head, and the other end passes through the fixed clamp handle and is connected to the movable clamp handle. A fixing component for fixing the pull rod is provided on the movable clamp head.

[0012] Furthermore, the fixing assembly comprises a fixing tube provided on a side of the movable clamp handle close to the fixed clamp handle, and an end of the pull rod away from the movable clamp head extends into the fixing tube;

[0013] The fixed tube includes a mounting portion connected to the movable pliers head and a plurality of clamping portions arranged in a circular array at the end of the mounting portion, and the clamping portions are made of elastic material; an external thread is provided on the outer circumferential surface of the fixed tube, and a fixing ring is threadedly connected to the fixed tube, and rotating the fixing ring can squeeze and drive the plurality of clamping portions to enclose and clamp the pull rod.

[0014] Furthermore, an outer surface of the clamping portion away from one end of the mounting portion is fixedly connected to a limiting block.

[0015] Furthermore, a receiving groove is provided on one side of the fixed pliers head facing the movable pliers head, and the fixed component is received in the receiving groove when the bite shears are in a natural state.

[0016] Furthermore, a mounting groove is provided on a side of the movable pliers head close to the fixed pliers head, an inner thread is provided on an inner wall of the mounting groove, and the fixed cylinder is threadedly connected to the mounting groove.

[0017] Furthermore, the outer tube and the pull rod are both made of stainless steel.

[0018] The beneficial effects of the utility model are:

[0019] The vocal cord polyp biting scissors of the utility model are used in conjunction with a supporting laryngoscope. Specifically, when in use, the biting portion is sent to the polyp biting position by holding the holding portion, and then the movable handle is pinched to drive one end of the pull rod to move, so that the pull rod pulls the movable pliers head to swing close to the fixed pliers head, and when the movable pliers head swings close to the fixed pliers head, the first blade approaches the second blade and abuts against the second blade to directly bit and remove the polyp, and its working process is similar to that of nail scissors. Compared with the pliers head of the mouth-to-mouth biting type in the prior art, its biting process is smoother, and it is not easy to pull and tear off the vocal cord mucosa without diseased parts, and the blades of the first blade and the second blade are straight, and the blades are positioned inward, so that the pliers head is not easy to scratch the patient during use, thereby ensuring the safety during the operation.

[0020] Other advantages, objects and features of the present utility model will be set forth in part in the following description, and in part will be obvious to those skilled in the art upon examination of the following, or may be learned from the practice of the present utility model. The objects and other advantages of the present utility model may be realized and obtained by the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a biting and cutting structure of the present utility model.

[0022] Figure 2 It is a schematic structural diagram of a bendable vocal cord polyp biting and cutting scissors of the present utility model.

[0023] Figure 3 It is a schematic connection diagram of a pull rod and an outer tube of a bendable vocal cord polyp biting and cutting scissors of the present utility model.

[0024] Figure 4 For the present utility model Figure 3 Enlarged view of part A.

[0025] In the figure: 1 - movable jaw head, 2 - fixed jaw head, 3 - first blade, 4 - second blade, 5 - first through hole, 6 - second through hole, 7 - fixed jaw handle, 8 - movable jaw handle, 9 - outer tube, 10 - pull rod, 11 - installation part, 12 - clamping part, 13 - external thread, 14 - fixing ring, 15 - limiting block, 16 - receiving groove, 17 - installation groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0028] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the above description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "one side" and "the other side" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0030] In addition, terms such as "identical" do not mean that the components are required to be absolutely identical, but there may be slight differences. The term "vertical" only means that the positional relationship between components is more vertical relative to "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0031] Please refer to Figures 1 to 3 , the present utility model provides a technical solution: a biting and cutting structure, including a biting and cutting part. The biting and cutting part includes a fixed jaw 2 and a movable jaw 1 hinged to the fixed jaw 2. Opposite sides of the fixed jaw 2 and the movable jaw 1 away from the connection end are respectively fixedly connected with a first blade 3 and a second blade 4. The cutting edges of the first blade 3 and the second blade 4 are straight-line structures parallel to each other, and the cutting edge of the first blade 3 is located on the rotation trajectory of the cutting edge of the second blade 4. By rotating the movable jaw 1, the second blade 4 can be driven to approach or move away from the first blade 3.

[0032] When the present utility model's biting and cutting structure is in use, during the process that the movable jaw 1 swings close to the fixed jaw 2, the first blade 3 approaches the second blade 4 and abuts against the second blade 4 to directly bite and cut off polyps. Its working process is similar to that of a nail clipper. Compared with the opposing-biting type jaws in the prior art, the biting and cutting process is smoother, and it is not easy to cause traction and avulsion damage to the vocal cord mucosa of the non-lesioned part. Moreover, the cutting edges of the first blade 3 and the second blade 4 are straight lines and the positions of the cutting edges face inwards, so the jaws are not easy to scratch the patient during use, thus ensuring the safety during the operation. Secondly, baffles are respectively arranged on the opposite sides of the bottoms of the movable jaw 1 and the fixed jaw 2, so that when the movable jaw 1 swings and encloses with the fixed jaw 2, a groove-like structure is formed, thereby temporarily storing the polyps bitten and cut off to prevent the polyps from falling into the patient's body to ensure that the excised polyps are completely taken out.

[0033] Please refer to Figure 1, in this embodiment, first through holes 5 are respectively formed on the opposite sides of the movable jaw 1 and the fixed jaw 2, and the two first through holes 5 penetrate through the movable jaw 1 and the fixed jaw 2 respectively.

[0034] Second through holes 6 are respectively formed on the sides of the first blade 3 and the second blade 4 facing the fixed jaw 2, and the two second through holes 6 penetrate through the first blade 3 and the second blade 4 respectively.

[0035] In this solution, by respectively forming the first through holes 5 on the movable jaw 1 and the fixed jaw 2, and by forming the second through holes 6 on the first blade 3 and the second blade 4, the movable jaw 1, the fixed jaw 2, the first blade 3 and the second blade 4 are in a hollow shape, which is beneficial for the user to observe the resection of the diseased vocal cord polyp tissue through the through holes.

[0036] Please refer to Figure 2 and Figure 3 , the present utility model further provides a technical solution: a bendable vocal cord polyp biting and cutting scissors, including a holding part and a connecting part for connecting the holding part and the biting and cutting part, the holding part includes a fixed pliers handle 7 and a movable pliers handle 8 hinged to the fixed pliers handle 7;

[0037] The connecting part includes an outer tube 9 fixedly penetrated on the fixed pliers handle 7, the outer tube 9 is fixed to the fixed pliers handle 7 by elastic clamping, and the other end of the outer tube 9 is fixedly connected to the fixed jaw 2;

[0038] A pull rod 10 is penetrated in the outer tube 9, one end of the pull rod 10 is connected to the movable jaw 1, and the other end passes through the fixed pliers handle 7 and is connected to the movable pliers handle 8. A fixing component for fixing the pull rod 10 is provided on the movable jaw 1. By releasing the fixing of the pull rod 10 by the fixing component, the entire connecting part and the biting and cutting part can be detached from the holding part for replacement, so as to replace and prepare different models of the biting and cutting part before the operation according to the operation content, thereby the holding part can be reused, reducing the production cost and space occupation of the biting and cutting scissors.

[0039] The vocal cord polyp biting scissors of the utility model are used in conjunction with a supporting laryngoscope. Specifically, when in use, the biting portion is sent to the polyp biting position by holding the holding portion, and then the movable handle can be driven to move one end of the pull rod 10 by pinching the movable handle, so that the pull rod 10 pulls the movable pliers head 1 to swing close to the fixed pliers head 2. Its specific structure and working principle are prior art, and no further elaboration is made here. When the movable pliers head 1 swings close to the fixed pliers head 2, the first blade 3 approaches the second blade 4, and abuts against the second blade 4 to directly bit and remove the polyp. Its working process is similar to that of nail scissors. Compared with the pliers head of the prior art with the mouth-to-mouth biting type, its biting process is smoother, and it is not easy to pull and tear off the vocal cord mucosa without the diseased part, and the blades of the first blade 3 and the second blade 4 are straight, and the blades are positioned inward, so that the pliers head is not easy to scratch the patient during use, thereby ensuring the safety during the operation.

[0040] See also Figure 4 In this embodiment, the fixing assembly includes a fixing cylinder provided on the side of the movable clamp handle 8 close to the fixed clamp handle 7, and the end of the pull rod 10 away from the movable clamp head 1 extends into the fixing cylinder;

[0041] The fixed tube includes a mounting portion 11 for connecting to the movable pliers head 1 and a plurality of clamping portions 12 arranged in a circumferential array at the end of the mounting portion 11, and the clamping portions 12 are made of elastic material; an external thread 13 is provided on the outer circumferential surface of the fixed tube, and a fixing ring 14 is threadedly connected to the fixed tube, and rotating the fixing ring 14 can squeeze and drive the plurality of clamping portions 12 to enclose and clamp the pull rod 10.

[0042] In this solution, when the connecting part is installed on the holding part, the pull rod 10 and the outer tube 9 are first inserted into the fixed clamp handle 7. At this time, the outer tube 9 and the fixed clamp handle 7 are clamped and fixed, and then the movable handle is pinched, and one end of the pull rod 10 inserted into the fixed clamp handle 7 is led into the fixed tube, and then the fixing ring 14 is rotated. The fixing ring 14 moves on the fixed tube through threaded engagement. When the fixing ring 14 moves close to the clamping part 12, the multiple clamping parts 12 are driven to close together. Since the multiple clamping parts 12 are made of elastic material, and the diameter of the through hole formed by the multiple clamping parts 12 is slightly smaller than the diameter of the pull rod 10, the multiple clamping parts 12 can clamp and fix the pull rod 10 when they are closed, thereby completing the installation of the connecting part;

[0043] When it is necessary to disassemble the connecting part and replace it with the cutting part of a different model, only the fixing ring 14 needs to be rotated in the opposite direction, and then the connecting part is pulled to be disassembled. Thus, the entire connecting part and the cutting part can be disassembled from the holding part for replacement, so that the cutting part of different models can be prepared for replacement before the operation according to the surgical content, thereby enabling the holding part to be reused and reducing the production cost and space occupation of the cutting scissors.

[0044] Please refer to Figure 4 In this embodiment, a limiting block 15 is fixedly connected to the outer surface of one end of the clamping part 12 away from the mounting part 11.

[0045] In this solution, the moving stroke of the fixing ring 14 is restricted by the limiting block 15. Thus, when the fixing ring 14 moves to the end of the clamping part 12, the fixing ring 14 is blocked by the limiting block 15 and cannot move, preventing the fixing ring 14 from moving away from the fixed cylinder and avoiding the loss of the fixing ring 14.

[0046] Please refer to Figure 2 As shown, a receiving groove 16 is formed on the side of the fixed jaw 2 facing the movable jaw 1. In the natural state of the cutting scissors, the fixing assembly is received in the receiving groove 16.

[0047] In this solution, in the natural state of the cutting scissors, when the fixed handle 7 and the movable handle 8 are closed, the fixing assembly can be received in the receiving groove 16, thus ensuring the aesthetics of the cutting scissors.

[0048] Please refer to Figure 4 As shown, in this embodiment, an installation groove 17 is formed on the side of the movable jaw 1 close to the fixed jaw 2. Internal threads are provided on the inner wall of the installation groove 17, and the fixed cylinder is threadedly connected to the installation groove 17.

[0049] In this solution, the fixed cylinder is installed in the installation groove 17 by threading, which is beneficial to the installation and disassembly of the fixed cylinder, and the fixed cylinder with a diameter matching that of the pull rod 10 can be replaced according to the diameter of different pull rods 10, so as to fix the connecting part to the holding part.

[0050] Please refer to Figures 2 to 4 As shown, in this embodiment, both the outer tube 9 and the pull rod 10 are made of stainless steel.

[0051] In this solution, both the outer tube 9 and the pull rod 10 are made of 304L or 316L medical-grade stainless steel, which can be bent within a certain range and maintain their shapes. Thus, when the outer tube 9 and the pull rod 10 extend into the patient's mouth, they can be bent to improve the patient's comfort, and the angle of the cutting part can be adjusted according to the surgical needs.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A biting structure, comprising a biting portion, wherein the biting portion comprises a fixed clamp head (2) and a movable clamp head (1) hinged to the fixed clamp head (2), characterized in that: The fixed pliers head (2) and the movable pliers head (1) are respectively fixedly connected with a first blade (3) and a second blade (4) on opposite sides away from the connection end; the blades of the first blade (3) and the second blade (4) are parallel linear structures, and the blade of the first blade (3) is located on the blade rotation track of the second blade (4); the second blade (4) can be driven to approach or move away from the first blade (3) by rotating the movable pliers head (1); The movable clamp head (1) and the fixed clamp head (2) are respectively provided with first through holes (5) on opposite sides thereof, and the two first through holes (5) respectively penetrate the movable clamp head (1) and the fixed clamp head (2); A second through hole (6) is respectively provided on one side of the first blade (3) and the second blade (4) facing the fixed pliers head (2), and the two second through holes (6) respectively penetrate the first blade (3) and the second blade (4).

2. A flexible vocal cord polyp biting scissors, characterized by: The device comprises the bite cutting structure according to claim 1, further comprising a gripping portion and a connecting portion for connecting the gripping portion and the bite cutting portion, wherein the gripping portion comprises a fixed clamp handle (7) and a movable clamp handle (8) hingedly connected to the fixed clamp handle (7); The connecting portion comprises an outer tube (9) which is passed through and fixed on the fixed clamp handle (7), and the other end of the outer tube (9) is fixedly connected to the fixed clamp head (2); A pull rod (10) is passed through the outer tube (9), one end of the pull rod (10) is connected to the movable pliers head (1), and the other end passes through the fixed pliers handle (7) and is connected to the movable pliers handle (8). A fixing component for fixing the pull rod (10) is provided on the movable pliers head (1).

3. The bendable vocal cord polyp biting scissors according to claim 2, characterized in that: The fixing assembly comprises a fixing tube arranged on the side of the movable clamp handle (8) close to the fixed clamp handle (7), and one end of the pull rod (10) away from the movable clamp head (1) extends into the fixing tube; The fixed tube comprises a mounting portion (11) for connecting with the movable clamp head (1) and a plurality of clamping portions (12) arranged in a circumferential array at the end of the mounting portion (11), wherein the clamping portions (12) are made of elastic material; an external thread (13) is provided on the outer circumferential surface of the fixed tube, and a fixing ring (14) is threadedly connected to the fixed tube, and the fixing ring (14) can be rotated to squeeze and drive the plurality of clamping portions (12) to surround, clamp and fix the pull rod (10).

4. The bendable vocal cord polyp biting scissors according to claim 3, characterized in that: An outer surface of the clamping portion (12) at one end away from the mounting portion (11) is fixedly connected to a limiting block (15).

5. The bendable vocal cord polyp biting scissors according to claim 4, characterized in that: A receiving groove (16) is provided on one side of the fixed pliers head (2) facing the movable pliers head (1), and the fixed component is received in the receiving groove (16) when the bite shears are in a natural state.

6. The bendable vocal cord polyp biting scissors according to claim 4, characterized in that: A mounting groove (17) is provided on one side of the movable pliers head (1) close to the fixed pliers head (2), an internal thread is provided on the inner wall of the mounting groove (17), and the fixed cylinder is threadedly connected to the mounting groove (17).

7. The bendable vocal cord polyp biting scissors according to claim 2, characterized in that: The outer tube (9) and the pull rod (10) are both made of stainless steel.

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