Thyroid detacher for endoscopic thyroid surgery

Abstract

The utility model relates to the technical field of thyroid detachers, in particular to a thyroid detacher for endoscopic thyroid surgery, which comprises a shell, a movable arm component and an ultrasonic arm component. The shell part comprises a gun-type handle convenient to hold by a hand and an outer tube body fixed at one end of the gun-type handle; the movable arm assembly comprises an inner pipe arranged in the outer pipe body, a movable clamping arm connected with the side, away from the gun type handle, of the inner pipe, and a trigger located in a first installation chamber of the gun type handle, wherein the upper portion of the movable clamping arm is connected with the outer pipe body in a pivoted mode. The ultrasonic arm assembly comprises a waveguide tube arranged in the inner tube, the ultrasonic tool bit is provided with a plurality of clamping faces, the multiple clamping faces are arranged on the ultrasonic tool bit and can be selectively matched with the movable clamping arm through rotation, and the situation that a single clamping face adheres to a large number of tissue residues during blood coagulation or cutting is avoided. And the subsequent work is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of thyroid dissectors, in particular to a thyroid dissector for endoscopic thyroid surgery. Background Technique

[0002] Endoscopic thyroid surgery is to remove the thyroid through an endoscope. The endoscopic method can avoid leaving scars on the neck. Conventional endoscopes establish a cavity from the chest, lip or armpit, and the operating instrument reaches the thyroid position through the subcutaneous tissue to remove the thyroid.

[0003] During the existing thyroid surgery, the dissection of the thyroid mainly uses an ultrasonic scalpel to cut the thyroid tissue. The ultrasonic scalpel mainly forms a scissor structure between a movable clamping arm and an ultrasonic knife head to cut the tissue. When working, there is a certain angle between the movable clamping arm and the ultrasonic knife head. The tissue is placed between the movable clamping arm and the ultrasonic knife head, and the trigger drives the movable clamping arm to approach the ultrasonic knife head to clamp the tissue, and the tissue is pressed against the ultrasonic knife head to achieve the cutting or coagulation effect.

[0004] The problems of the existing technology are that only one clamping surface of the existing ultrasonic knife head faces the movable clamping arm, and high temperature will be generated when the ultrasonic knife head coagulates and cuts the tissue, resulting in tissue attachments adhering to the clamping surface of the ultrasonic knife head, affecting work efficiency. At the same time, only one clamping surface of the ultrasonic knife head cooperates with the movable clamping arm, and the clamping area of the two is fixed, and it cannot be adjusted according to different tissues, and the adaptation effect is poor. Content of the Utility Model

[0005] The utility model provides a thyroid dissector for endoscopic thyroid surgery, which is provided with a plurality of clamping surfaces on the ultrasonic knife head, and the movable clamping arm is rotated to cooperate with different clamping surfaces on the ultrasonic knife head to cut or coagulate the thyroid tissue, thereby solving the problem that only one clamping surface cooperates with the movable clamping arm, resulting in low efficiency of adhering tissue and the fixed clamping area between the movable clamping arm and the ultrasonic knife head, and being unable to adapt to different tissues for coagulation cutting.

[0006] The technical problems solved by the utility model are realized by adopting the following technical solutions:

[0007] A thyroid dissector for endoscopic thyroid surgery includes a housing part, a movable arm assembly and an ultrasonic arm assembly;

[0008] The housing part includes a gun-shaped handle for easy hand holding and an outer tube fixed at one end of the gun-shaped handle;

[0009] The movable arm assembly includes an inner tube disposed inside the outer tube, a movable clamping arm connected to one side of the inner tube away from the gun handle and pivotally connected to the upper part of the outer tube, and a trigger disposed inside the first installation chamber of the gun handle;

[0010] The ultrasonic arm assembly includes a waveguide disposed inside the inner tube, an ultrasonic knife head fixed to the waveguide and located at the end away from the gun handle, and an ultrasonic transducer disposed inside the second installation chamber of the gun handle and connected to the waveguide;

[0011] The ultrasonic arm assembly is rotatably installed inside the inner tube and the gun handle. A rotary driving member is provided on one side of the gun handle. The ultrasonic knife head has a plurality of clamping surfaces.

[0012] Preferably, the clamping surfaces of the plurality of ultrasonic knife heads have the same shape.

[0013] Preferably, the clamping surfaces of the plurality of ultrasonic knife heads have different shapes.

[0014] Preferably, the plurality of clamping surfaces of the ultrasonic knife head include at least one flat surface and one cutting edge surface.

[0015] Preferably, the rotary driving member includes a perforation formed on the side wall of the gun handle and communicating with the inside of the second installation chamber, and a rotary disk installed at the perforation position. The rotary disk has a convex column passing through the perforation and fixed to the ultrasonic transducer.

[0016] Preferably, one side of the rotary disk close to the gun handle has a reed buckle, and a clamping groove is provided on the side of the gun handle opposite to the rotary disk.

[0017] The beneficial effects of the present utility model are as follows: By providing a plurality of clamping surfaces on the ultrasonic knife head, and the plurality of clamping surfaces can be selectively matched with the movable clamping arm by rotation, it is avoided that more tissue residues adhere to a single clamping surface during blood coagulation or cutting, affecting subsequent work.

[0018] By matching clamping surfaces with different shapes with the movable clamping arm, it is possible to form closed segments with different widths or achieve different cutting speeds when cutting or coagulating tissues. Description of the Drawings

[0019] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for describing the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1Structural schematic diagram of the present utility model:

[0021] Figure 2 Cross-sectional view of the present utility model;

[0022] Figure 3 Exploded structural schematic diagram of the present utility model;

[0023] Figure 4 For the present utility model Figure 3 Cross-sectional view;

[0024] Figure 5 Structural schematic diagram of the rotation driving member of the present utility model;

[0025] Figure 6 Structural schematic diagram of the ultrasonic cutter head of the present utility model.

[0026] In the figure, 1 is the housing member; 101 is the pistol grip; 102 is the outer tube; 103 is the first installation chamber; 104 is the second installation chamber; 105 is the perforation; 106 is the card slot; 2 is the movable arm assembly; 201 is the inner tube; 202 is the trigger; 203 is the movable clamping arm; 3 is the ultrasonic arm assembly; 301 is the waveguide; 302 is the ultrasonic cutter head; 303 is the ultrasonic transducer; 304 is the cutting edge surface; 305 is the flat surface; 306 is the clamping surface; 4 is the rotation driving member; 401 is the rotating disc; 402 is the convex column; 403 is the reed buckle; 404 is the through hole; 5 is the wire. Specific embodiments

[0027] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below with reference to specific illustrations.

[0028] Refer to Figures 1-6, a thyroid gland dissector for endoscopic thyroid surgery, which comprises a housing member 1. The housing member 1 includes a pistol-shaped handle 101 with a first installation chamber 103 and a second installation chamber 104 inside, and also has an outer tube body 102 with a certain length, which can meet the requirement of reaching the position of the thyroid gland from one end of the cavity away from the thyroid gland during the endoscopic surgery process. The pistol-shaped handle 101 is used for the medical staff to hold and control by hand, and the outer tube body 102 is used for guiding. An active arm assembly 2 is installed inside the housing member 1. The active arm assembly 2 includes an inner tube 201 slidably placed inside the outer tube body 102, an active clamping arm 203 at one end of the inner tube 201, and a trigger 202 at the other end of the inner tube 201 and located inside the first installation chamber 103. The upper part of the active clamping arm 203 is pivotally connected to the end of the outer tube body 102, and the lower part is pivotally connected to the inner tube 201. The medical staff drives the inner tube 201 to slide inside the outer tube body 102 by controlling the action of the trigger 202 to realize the angle adjustment of the active clamping arm 203. The structures described above are the same as those of the existing ultrasonic scalpel for thyroid surgery and will not be further elaborated here. The existing ultrasonic scalpel also has an ultrasonic arm assembly 3, which includes a waveguide 301 in the inner tube 201, an ultrasonic knife head 302 at one end of the waveguide 301, and an ultrasonic transducer 303 at the other end of the waveguide 301 and located inside the second installation chamber 104 of the pistol-shaped handle 101. And the existing ultrasonic transducer 303 is mostly installed in the pistol-shaped handle 101 in a relatively fixed manner. For the technical personnel in the field to further understand the innovation points of the present invention, the working principle of the ultrasonic scalpel is further described here. When it is necessary to cut or coagulate the thyroid tissue or the blood vessels around the thyroid gland, first, keep a certain angle between the active clamping arm 203 and the ultrasonic knife head 302, and then place the tissue to be cut or coagulated between the active clamping arm 203 and the ultrasonic knife head 302. Press the trigger 202 on the handle to make the active clamping arm 203 move closer to the ultrasonic knife head 302 to realize the clamping of the tissue. Then, an electrical signal is provided to the ultrasonic transducer 303, and the ultrasonic transducer 303 drives the waveguide 301 and the ultrasonic knife head 302 to vibrate, and coagulates or cuts the tissue between the lower surface of the active clamping arm 203 and the upper surface clamping surface 306 of the ultrasonic knife head 302. When coagulating and cutting, there is also a button 103 on the pistol-shaped handle 101 for adjusting the coagulation gear and the cutting gear. The above is the description of the working principle of the existing ultrasonic scalpel.

[0029] As can be seen from the above, since most of the existing ultrasonic transducers 303 are fixed inside the second installation chamber 104 of the gun handle 101, the positions of the waveguide 301 and the ultrasonic knife head 302 connected to the ultrasonic transducer 303 are also fixed. As a result, only one upper surface of the ultrasonic knife head 302 serves as the clamping surface 306 to cooperate with the lower surface of the movable clamping arm 203 for blood coagulation and cutting operations. Since the ultrasonic knife head 302 generates high temperature during operation, during blood coagulation or cutting operations, it is easy for some tissue attachments to be heated and carbonized and adhere to the clamping surface 306 of the ultrasonic knife head 302, thereby affecting the subsequent blood coagulation and cutting efficiency. At the same time, the existing ultrasonic knife head 302 has only one clamping surface 306 to cooperate with the lower surface of the movable clamping arm 203, resulting in a certain area of the clamping surface 306 of the two, and it is not possible to adopt different clamping surface 306 areas to cooperate according to different tissue shapes to form closed segments of different widths.

[0030] To solve the defects of the existing ultrasonic scalpel used in the existing thyroid surgery process, the present utility model makes the following improvements to the existing technology. Specifically, the ultrasonic arm assembly 3 is set to be rotatable, that is, the ultrasonic transducer 303 is rotatably installed inside the second installation chamber 104. At the same time, multiple clamping surfaces 306 are provided on the ultrasonic knife head 302, and a rotation driving member 4 is provided on one side of the gun handle 101. The rotation driving member 4 drives the ultrasonic transducer 303 to rotate inside the second installation chamber 104, and the ultrasonic transducer 303 drives the waveguide 301 and the ultrasonic knife head 302 to rotate. The ultrasonic knife head 302 has multiple clamping surfaces 306, and rotation can make different clamping surfaces 306 face the lower surface of the movable clamping arm 203, thereby avoiding the problem that the cutting and blood coagulation efficiency is affected due to tissue residues adhering to one clamping surface 306 of the ultrasonic knife head 302 after multiple cuts.

[0031] Furthermore, the clamping surfaces 306 of multiple ultrasonic knife heads 302 can be set to have the same shape. In this way, after one clamping surface 306 adheres to tissue residues, it can be rotated to replace the clamping surface 306 without adhering to tissue residues for use.

[0032] Further, the clamping surfaces 306 of multiple ultrasonic cutter heads 302 have different shapes, and the clamping surfaces 306 of the ultrasonic cutter heads 302 can also be set to different shapes, so that the lower surface of the movable clamping arm 203 cooperates with the clamping surfaces 306 of different shapes of the ultrasonic cutter heads 302 to form closed segments with different widths during tissue coagulation or cutting. Different widths of closed segments can coagulate or cut the blood vessels and thyroid tissues around the thyroid gland. When working, different clamping surfaces 306 can be selected. For a single blood vessel, its blood supply path can be determined, and the clamping surface 306 of the ultrasonic cutter head 302 that forms a smaller clamping surface 306 with the movable clamping arm 203 can be selected to cut the blood vessel. There are multiple blood supply vessels around the thyroid tissue and the tissue is relatively thick. When coagulating, in order to ensure a sufficient width of the closed segment and avoid bleeding after later cutting, the clamping surface 306 of the ultrasonic cutter head 302 that forms a larger clamping surface 306 area after cooperating with the ultrasonic cutter head 302 can be used to improve work efficiency.

[0033] Further, at least one of the multiple clamping surfaces 306 of the ultrasonic cutter head 302 includes a flat surface 305 and a blade surface 304. The clamping surface 306 of the ultrasonic cutter head 302 has at least one flat surface 305 and one blade surface 304. The flat surface 305 can ensure the width of the coagulation segment, and the blade surface 304 can fully ensure the cutting speed. For tissues such as the thyroid gland with sufficient blood supply, in order to avoid poor coagulation effect after cutting, the flat surface 305 can be first used to cooperate with the lower surface of the movable clamping arm 203 to form a relatively wide closed segment, and then the blade surface 304 is used to cooperate with the lower surface of the movable clamping arm 203 to form a cutting mark with a smaller width, so as to ensure that the thyroid tissue after cutting will not show bleeding.

[0034] Further, the rotation driving member 4 includes a perforation 105 opened on the side wall of the gun-shaped handle 101 and communicating with the inside of the second installation chamber 104, and a rotating disk 401 installed at the position of the perforation 105. The rotating disk 401 has a convex column 402 passing through the perforation 105 and fixed to the ultrasonic transducer 303. By rotating the rotating disk 401, the ultrasonic transducer 303, the waveguide 301, and the ultrasonic cutter head 302 can be driven to rotate, so that different clamping surfaces 306 of the ultrasonic cutter head 302 cooperate with the movable clamping arm 203.

[0035] Further, one side of the rotating disk 401 close to the gun-shaped handle 101 has a reed buckle 403, and a slot 106 is provided on the side of the gun-shaped handle 101 opposite to the rotating disk 401. The cooperation of the reed buckle 403 and the slot 106 can position the rotating disk 401 and prevent the ultrasonic cutter head 302 from rotating during work, such as Figure 5 and Figure 6As shown in the figure, the cross-section of the ultrasonic tool head 302 is square, with four clamping surfaces 306. The number of the reed buckles 403 and the clamping grooves 106 on the rotating disc 401 is also four, and they are evenly axially arranged along the axis of the waveguide 301. When each clamping surface 306 is matched with the lower surface of the movable clamping arm 203, the reed buckle 403 can be fixed through the clamping groove 106 to ensure its stability. And each time when adjusting the cooperation of different clamping surfaces 306 with the movable clamping arm 203, it is necessary to rotate 90 degrees. Here, only the example of four clamping surfaces 306 and four reed buckles 403 is taken to help those skilled in the art understand. In fact, the ultrasonic tool head 302 can also be set to a structure with a triangular cross-section, having three clamping surfaces 306. At this time, the number of the reed buckles 403 and the clamping grooves 106 corresponds to three, and each time the adjustment is carried out by rotating 120 degrees. Similarly, other numbers of clamping surfaces 306 can also be used to cooperate with the movable clamping arm 203. The present invention realizes the adjustment of the clamping surface 306 of the ultrasonic tool head 302 by using the reed buckle 403 and the clamping groove 106, and has the following advantages. First, the adjustment is convenient. When the reed buckle 403 is subjected to a large rotational force, the reed buckle 403 disengages from the clamping groove 106, and when the rotational force received is insufficient, the reed buckle 403 is inside the clamping groove 106 to ensure the stability of the clamping surface 306 of the ultrasonic tool head 302. Second, it is convenient for positioning. The number of the reed buckles 403, the clamping grooves 106 and the clamping surfaces 306 of the ultrasonic tool head 302 is equal, so that when each clamping surface 306 of the ultrasonic tool head 302 is matched with the lower surface of the movable clamping arm 203, the reed buckle 403 is inside the clamping groove 106, and the positioning is accurate. Of course, the positioning method of the rotary drive member 4 of the present invention is not limited to this method only. For example, the common method of bolt locking is used, etc.

[0036] It should be further noted that since the ultrasonic transducer 303 needs to be connected to the external wire 5 to receive the electrical signal, a through hole 404 is provided at the center position of the rotating disc 401 to facilitate the external wire 5 to pass through and be connected to the ultrasonic transducer 303. In order to prevent the wire 5 from being twisted when the ultrasonic transducer 303 rotates, a conductive slip ring (not shown in the figure) can be used between the wire 5 and the ultrasonic transducer 303 to overcome this problem.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A thyroid dissector for laparoscopic thyroid surgery, comprising a housing (1), a movable arm assembly (2) and an ultrasonic arm assembly (3); The outer shell (1) comprises a gun-type handle (101) that is convenient for hand gripping and an outer tube body (102) fixed at one end of the gun-type handle (101); The movable arm assembly (2) comprises an inner tube (201) slidably disposed inside an outer tube body (102), a movable clamp arm (203) connected to a side of the inner tube (201) away from the gun-type handle (101) and having an upper portion pivotally connected to the outer tube body (102), and a trigger (202) located inside a first mounting chamber (103) of the gun-type handle (101); The ultrasonic arm assembly (3) comprises a waveguide (301) disposed inside the inner tube (201), an ultrasonic blade head (302) fixed to the waveguide (301) and located at an end away from the gun-type handle (101), and an ultrasonic transducer (303) located inside the second installation chamber (104) of the gun-type handle (101) and connected to the waveguide (301); Features ； The ultrasonic arm assembly (3) is rotatably mounted inside the inner tube (201) and the gun-type handle (101); a rotary drive member (4) is disposed on one side of the gun-type handle (101); and the ultrasonic blade head (302) has a plurality of clamping surfaces (306).

2. The thyroid stripper for laparoscopic thyroid surgery according to claim 1, characterized in that: The clamping surfaces (306) of the plurality of ultrasonic blade heads (302) have the same shape.

3. The thyroid stripper for laparoscopic thyroid surgery according to claim 1, characterized in that: The clamping surfaces (306) of the plurality of ultrasonic blade heads (302) have different shapes.

4. The thyroid stripper for laparoscopic thyroid surgery according to claim 1, characterized in that: The multiple clamping surfaces (306) of the ultrasonic blade head (302) include at least one flat surface (305) and one blade surface (304).

5. The thyroid stripper for laparoscopic thyroid surgery according to claim 1, characterized in that: The rotary drive member (4) comprises a through hole (105) provided on the side wall of the gun-type handle (101) and communicating with the interior of the second installation chamber (104), and a rotating disc (401) installed at the position of the through hole (105); the rotating disc (401) has a convex column (402) passing through the through hole (105) and fixed to the ultrasonic transducer (303).

6. The thyroid stripper for laparoscopic thyroid surgery according to claim 5, characterized in that: A side of the rotating disc (401) close to the gun-type handle (101) is provided with a spring buckle (403), and a side of the gun-type handle (101) opposite to the rotating disc (401) is provided with a clamping groove (106).

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