Miniature bipolar electrocoagulation hook

Abstract

The invention belongs to the technical field of medical instrument accessories, and particularly relates to a miniature bipolar electrocoagulation hook. In order to solve the problem that a bipolar electrocoagulation hook in the prior art is large in size, the miniature bipolar electrocoagulation hook comprises a handle internally provided with an installation space and an outer tube connected to the handle, the end, away from the handle, of the outer tube is further connected with an insulating double-cavity tube, and a first electrocoagulation hook and a second electrocoagulation hook are both connected into the insulating double-cavity tube. One end of the first electrocoagulation hook and one end of the second electrocoagulation hook extend to the outer side of the insulating double-cavity tube and are electrically connected with the first electrode assembly and the second electrode assembly located in the installation space respectively. By adopting the structural design that the insulating double-cavity tube sleeved with the first electrocoagulation hook and the second electrocoagulation hook directly extends into the mounting space, and the end parts of the first electrocoagulation hook and the second electrocoagulation hook also extend into the mounting space and are electrically connected with the electrode assembly, compared with the structure in the prior art, the outer diameter of the outer tube can be reduced; the application scene of the electrocoagulation hook is expanded.

Description

Technical Field

[0001] The invention belongs to the technical field of medical device accessories, and in particular relates to a miniature bipolar electrocoagulation hook. Background Art

[0002] At present, minimally invasive surgery under endoscopy is very mature, and the supporting surgical instruments are becoming more and more perfect. In the process of minimally invasive surgery, electrocoagulation hemostasis or cutting instruments are often needed, but the electrocoagulation hemostasis or cutting instruments currently used are mainly monopolar electrocoagulation hooks of 3mm and above. However, because bipolar electrocoagulation hooks do not have a negative plate in contact with the human body, they can cause less damage to the human body when working compared to monopolar electrocoagulation hooks, so the use of bipolar electrocoagulation hooks is a trend in the medical industry.

[0003] In view of this problem, people have also conducted exploration and research in long-term production and life practices. For example, a Chinese utility model patent discloses a bipolar electrocoagulation hook [application number: CN201220230003.0]. The utility model includes an electric hook head, an electric hook seat, an insulating sleeve, an electric hook rod, a wire, a handle seat, a connecting sleeve, a handle and a power plug-in. The two electric hook heads are fixed in the electric hook seat, and the two wires are welded and fixed to the two electric hook heads; one end of the electric hook rod is fixedly connected to the electric hook seat and welded and fixed to a wire; the insulating sleeve is sleeved on the electric hook rod and fixedly connected to the electric hook seat; the other end of the electric hook rod is welded and fixed to a wire; the handle seat is sleeved outside the two wires and fixedly connected to the electric hook rod and the insulating sleeve; the connecting sleeve is sleeved on the handle seat, the handle is sleeved in the connecting sleeve and fixedly connected to the handle seat; the power plug-in is welded and fixed to the two wires, and the power plug-in is clamped and fixed to the handle.

[0004] Although the utility model provides a bipolar electrocoagulation hook, the specific installation structure adopted by the utility model determines that its size is large, and the outer diameter of the surgical end is generally more than 5 mm. It cannot be used in many surgeries and its application scenarios are limited. Summary of the invention

[0005] The purpose of the present invention is to provide a miniature bipolar electrocoagulation hook in view of the above problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A miniature bipolar electrocoagulation hook comprises a handle with an installation space inside and an outer tube connected to the handle, wherein the end of the outer tube away from the handle is also connected to an insulating double-lumen tube, a first electrocoagulation hook and a second electrocoagulation hook are both connected inside the insulating double-lumen tube, one end of the insulating double-lumen tube extends into the installation space, and one end of the first electrocoagulation hook and the second electrocoagulation hook extend to the outside of the insulating double-lumen tube and are respectively electrically connected to a first electrode assembly and a second electrode assembly located in the installation space.

[0008] In the above-mentioned micro bipolar electrocoagulation hook, the outer diameter of the outer tube is less than 3 mm.

[0009] In the above-mentioned micro bipolar electrocoagulation hook, the outer tube is made of metal material, and one end of the insulating double-lumen tube extends to the outside of the outer tube.

[0010] In the above-mentioned micro bipolar electrocoagulation hook, the first electrocoagulation hook and the second electrocoagulation hook are located in the installation space and part of the surface extending to the outside of the insulating double-lumen tube is also covered with an insulating tube, and the first electrode assembly and the second electrode assembly are arranged front and back along the axial direction of the handle.

[0011] In the above-mentioned micro bipolar electrocoagulation hook, the first electrode assembly includes an electrode ring and a compression sleeve pressed on one side of the electrode ring, the first electrocoagulation hook is electrically connected to the electrode ring, and the compression sleeve is threadedly connected to the handle. Rotating the compression sleeve can push the electrode ring to move and press the electrode ring against the inner side of the handle.

[0012] In the above-mentioned micro bipolar electrocoagulation hook, the second electrode assembly includes an electrode head, the second electrocoagulation hook is electrically connected to the electrode head, and an isolation sleeve made of insulating material is provided between the electrode head and the electrode ring.

[0013] In the above-mentioned micro bipolar electrocoagulation hook, a threaded sleeve is fixedly connected to the outer surface of the outer tube, the threaded sleeve is threadedly connected to the handle, and a cap is also provided at the end of the handle, and the cap is pressed on the end of the threaded sleeve.

[0014] In the above-mentioned micro bipolar electrocoagulation hook, the insulating double-lumen tube is made of PTFE material.

[0015] In the above-mentioned micro bipolar electrocoagulation hook, a fixing structure is further provided between the insulating double-lumen tube and the outer tube, one end of the fixing structure is connected to the outer tube, and the other end is pressed onto the insulating double-lumen tube.

[0016] In the above-mentioned micro bipolar electrocoagulation hook, the fixing structure includes a fixing block, and the surface of the insulating double-lumen tube is provided with a groove sunken into the interior of the insulating double-lumen tube, and the groove is arranged one-to-one with the fixing block, one end of the fixing block is fixedly connected to the outer tube, and the other end extends into the groove and the outer side surface of the fixing block is in contact with the inner side surface of the groove.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. The present invention adopts an insulating double-lumen tube that is sleeved with the first electrocoagulation hook and the second electrocoagulation hook and directly extends into the installation space. The ends of the first electrocoagulation hook and the second electrocoagulation hook also extend into the installation space and are electrically connected to the electrode assembly. Compared with the structure in the prior art, the outer diameter of the outer tube can be less than 5 mm, or even within 3 mm, so as to expand the application scenarios of the electrocoagulation hook.

[0019] 2. In the present invention, the insulating tube covering the extended sections of the first electrocoagulation hook and the second electrocoagulation hook can further ensure the insulation between the first electrocoagulation hook and the second electrocoagulation hook. At the same time, arranging the first electrode assembly and the second electrode assembly in front and behind can effectively prevent the generation of creeping current and improve the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a cross-sectional view of the present invention;

[0021] Figure 2 A perspective view of the present invention;

[0022] Figure 3 yes Figure 1 The enlarged view of point A in the middle;

[0023] Figure 4 is a cross-sectional view of a portion of the structure of the present invention;

[0024] In the figure: handle 1, outer tube 2, insulating double-lumen tube 3, first electrocoagulation hook 4, second electrocoagulation hook 5, installation space 6, first electrode assembly 7, second electrode assembly 8, insulating tube 9, threaded sleeve 10, cap 11, fixing block 12, groove 13, electrode ring 71, compression sleeve 72, electrode head 81, isolation sleeve 82. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Combination Figure 1-3 As shown, a miniature bipolar electrocoagulation hook comprises a handle 1 with an installation space 6 inside and an outer tube 2 connected to the handle 1, the end of the outer tube 2 away from the handle 1 is also connected to an insulating double-lumen tube 3, a first electrocoagulation hook 4 and a second electrocoagulation hook 5 are both connected to the insulating double-lumen tube 3, one end of the insulating double-lumen tube 3 extends into the installation space 6, and one end of the first electrocoagulation hook 4 and the second electrocoagulation hook 5 extends to the outside of the insulating double-lumen tube 3 and are respectively electrically connected to a first electrode assembly 7 and a second electrode assembly 8 located in the installation space 6.

[0027] In the present invention, when in use, the first electrocoagulation hook 4 and the second electrocoagulation hook 5 are installed on the insulating double-lumen tube 3. The insulating double-lumen tube 3 adopts a through-to-the-bottom structure, and the end portion directly extends into the installation space 6. The ends of the first electrocoagulation hook 4 and the second electrocoagulation hook 5 are also directly electrically connected to the first electrode assembly 7 and the second electrode assembly 8. Compared with the assembly method in which the electric hook seat, insulating sleeve, electric hook rod, wire and other parts cooperate with each other in the prior art, the overall size can be greatly reduced. Therefore, the present invention adopts an insulating double-lumen tube 3 with the first electrocoagulation hook 4 and the second electrocoagulation hook 5 directly extending into the installation space 6, and the ends of the first electrocoagulation hook 4 and the second electrocoagulation hook 5 also extend into the installation space 6 and are electrically connected to the electrode assembly. Compared with the structure in the prior art, the outer diameter of the outer tube can be made less than 5 mm, so as to expand the application scenarios of the electrocoagulation hook.

[0028] Preferably, the outer diameter of the outer tube 2 is less than 3 mm. Further reducing the outer diameter can further expand the application scenarios of the electrocoagulation hook.

[0029] like Figure 1 As shown, the outer tube 2 is made of metal material, and one end of the insulating double-lumen tube 3 extends to the outside of the outer tube 2. The outer tube 2 made of metal material can provide a higher strength for the whole device. However, since the outer tube 2 is made of metal material, the insulating double-lumen tube 3 protrudes a short distance from the outer tube 2, which can effectively avoid the creepage effect caused by too close distance and ensure the safety of use.

[0030] like Figure 1 As shown, the first electrocoagulation hook 4 and the second electrocoagulation hook 5 are located in the installation space 6 and the surface of the part extending to the outside of the insulating double-lumen tube 3 is also covered with an insulating tube 9, and the first electrode assembly 7 and the second electrode assembly 8 are arranged front and back along the axial direction of the handle 1. In the present invention, the insulating tube 9 is covered on the extension section of the first electrocoagulation hook 4 and the second electrocoagulation hook 5 to further ensure the insulation between the first electrocoagulation hook 4 and the second electrocoagulation hook 5, and at the same time, the first electrode assembly 7 and the second electrode assembly 8 are arranged front and back to effectively prevent the generation of creeping current and improve the safety of use.

[0031] Specifically, the first electrode assembly 7 includes an electrode ring 71 and a compression sleeve 72 pressed on one side of the electrode ring 71, the first electrocoagulation hook 4 is electrically connected to the electrode ring 71, the compression sleeve 72 is threadedly connected to the handle 1, and the compression sleeve 72 can be rotated to push the electrode ring 71 to move and press the electrode ring 71 on the inner side of the handle 1. The second electrode assembly 8 includes an electrode head 81, the second electrocoagulation hook 5 is electrically connected to the electrode head 81, and an isolation sleeve 82 made of insulating material is provided between the electrode head 81 and the electrode ring 71.

[0032] like Figure 1As shown, a threaded sleeve 10 is fixedly connected to the outer surface of the outer tube 2, and the threaded sleeve 10 is threadedly connected to the handle 1. A cap 11 is also provided at the end of the handle 1, and the cap 11 is pressed on the end of the threaded sleeve 10. This connection method can facilitate the assembly and disassembly between the outer tube 2 and the handle 1.

[0033] The insulating double-lumen tube 3 is made of insulating material, but preferably, the insulating double-lumen tube 3 is made of PTFE material. PTFE material is polytetrafluoroethylene, also known as Teflon, which is a high molecular polymer obtained by polymerization of tetrafluoroethylene as a monomer. It has excellent heat resistance and cold resistance and can be used for a long time at -180 to 260°C. This material is resistant to acids and alkalis, and to various organic solvents, and is almost insoluble in all solvents. Although the PTFE material has the above-mentioned advantages, its surface is smooth and difficult to be bonded and fixed with an adhesive. In particular, in the present invention, the insulating double-lumen tube 3 adopts a through-to-the-bottom structure, and a special fixing structure needs to be designed between the insulating double-lumen tube 3 and the outer tube 2 for fixing.

[0034] Combination Figure 2 and Figure 4 As shown, a fixing structure is further provided between the insulating double-lumen tube 3 and the outer tube 2, one end of the fixing structure is connected to the outer tube 2, and the other end is pressed on the insulating double-lumen tube 3. The fixing structure includes a fixing block 12, and a groove 13 is provided on the surface of the insulating double-lumen tube 3, which is recessed into the inside of the insulating double-lumen tube 3. The groove 13 is arranged in a one-to-one correspondence with the fixing block 12, one end of the fixing block 12 is fixedly connected to the outer tube 2, and the other end extends into the groove 13, and the outer side surface of the fixing block 12 is in contact with the inner side surface of the groove 13.

[0035] The present invention adopts a method of providing a groove 13 on the outer side of the insulating double-lumen tube 3 and then welding a fixing block 12 extending inwardly on the outer tube 2 to achieve fixation between the insulating double-lumen tube 3 and the outer tube 2, thereby overcoming the problem that PTFE material is difficult to fix by adhesive.

[0036] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0037] Although the present invention uses more terms such as handle 1, outer tube 2, insulating double-lumen tube 3, first electrocoagulation hook 4, second electrocoagulation hook 5, installation space 6, first electrode assembly 7, second electrode assembly 8, insulating tube 9, threaded nipple 10, cap 11, fixing block 12, groove 13, electrode ring 71, compression sleeve 72, electrode head 81, isolation sleeve 82, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A miniature bipolar electrocoagulation hook, comprising a handle (1) having an installation space (6) therein and an outer tube (2) connected to the handle (1), characterized in that: The end of the outer tube (2) away from the handle (1) is also connected to an insulating double-lumen tube (3), and the first electrocoagulation hook (4) and the second electrocoagulation hook (5) are both connected to the insulating double-lumen tube (3). One end of the insulating double-lumen tube (3) extends into the installation space (6), and one end of the first electrocoagulation hook (4) and the second electrocoagulation hook (5) extend to the outside of the insulating double-lumen tube (3) and are respectively electrically connected to the first electrode assembly (7) and the second electrode assembly (8) located in the installation space (6).

2. A miniature bipolar electrocoagulation hook as claimed in claim 1, characterized in that: The outer diameter of the outer tube (2) is less than 3 mm.

3. A miniature bipolar electrocoagulation hook as claimed in claim 1, characterized in that: The outer tube (2) is made of metal material, and one end of the insulating double-lumen tube (3) extends to the outside of the outer tube (2).

4. A miniature bipolar electrocoagulation hook as claimed in claim 1, characterized in that: The first electrocoagulation hook (4) and the second electrocoagulation hook (5) are located in the installation space (6) and the surface of the part extending to the outside of the insulating double-lumen tube (3) is also covered with an insulating tube (9), and the first electrode assembly (7) and the second electrode assembly (8) are arranged front and back along the axial direction of the handle (1).

5. A miniature bipolar electrocoagulation hook as claimed in claim 4, characterized in that: The first electrode assembly (7) comprises an electrode ring (71) and a compression sleeve (72) pressed on one side of the electrode ring (71); the first electrocoagulation hook (4) is electrically connected to the electrode ring (71); the compression sleeve (72) is threadedly connected to the handle (1); rotating the compression sleeve (72) can push the electrode ring (71) to move and cause the electrode ring (71) to be pressed on the inner side of the handle (1).

6. A miniature bipolar electrocoagulation hook as claimed in claim 5, characterized in that: The second electrode assembly (8) comprises an electrode head (81), the second electrocoagulation hook (5) is electrically connected to the electrode head (81), and an isolation sleeve (82) made of insulating material is provided between the electrode head (81) and the electrode ring (71).

7. A miniature bipolar electrocoagulation hook as claimed in claim 1, characterized in that: A threaded socket (10) is fixedly connected to the outer surface of the outer tube (2), and the threaded socket (10) is threadedly connected to the handle (1). A cover cap (11) is also provided at the end of the handle (1), and the cover cap (11) is pressed onto the end of the threaded socket (10).

8. A miniature bipolar electrocoagulation hook as claimed in claim 1, characterized in that: The insulating double-lumen tube (3) is made of PTFE material.

9. A miniature bipolar electrocoagulation hook as claimed in claim 8, characterized in that: A fixing structure is also provided between the insulating double-lumen tube (3) and the outer tube (2); one end of the fixing structure is connected to the outer tube (2) and the other end is pressed onto the insulating double-lumen tube (3).

10. A miniature bipolar electrocoagulation hook as claimed in claim 9, characterized in that: The fixing structure comprises a fixing block (12); a groove (13) recessed toward the inside of the insulating double-lumen tube (3) is provided on the surface of the insulating double-lumen tube (3); the groove (13) and the fixing block (12) are arranged in a one-to-one correspondence; one end of the fixing block (12) is fixedly connected to the outer tube (2); the other end extends into the groove (13); and the outer side surface of the fixing block (12) is in contact with the inner side surface of the groove (13).

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