Electrocoagulation knife

Abstract

The utility model discloses an electrocoagulation scalpel, and particularly relates to the technical field of medical instruments, the electrocoagulation scalpel comprises a handheld rod and a scalpel head, a lead-in rod is arranged between the handheld rod and the scalpel head, and the lead-in rod comprises a first section and a second section rotationally connected with the first section. According to the electrocoagulation knife provided by the utility model, the guide-in rod is divided into the first section and the second section, and the second section is stressed to drive the knife head to rotate, so that the size of a rotating part when the knife head is bent is reduced, and the electrocoagulation knife can be bent in a body to achieve the effect of cutting human tissues at multiple angles.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an electrocoagulation knife. Background Art

[0002] As we all know, lung cancer is currently the most common malignant tumor worldwide and ranks first in tumor mortality. With the promotion of CT screening technology, more and more early-stage lung cancers are being detected, providing patients with the opportunity to achieve radical resection through surgery and improve their survival prognosis. Thoracoscopically assisted minimally invasive surgery has gradually become the mainstream technology for lung surgery due to its advantages such as small incisions, minimal damage to ribs and muscles, rapid recovery, and shortened hospital stays. The electrocoagulation knife has become indispensable for the safe and successful performance of thoracoscopic lung surgery.

[0003] For example, the Chinese patent document with the authorization announcement number CN213098271U, the announcement date 2021-05-04, and the name "A Bendable and Adjustable Electric Scalpel Pen" includes a bendable and adjustable electric scalpel pen, including a blade head, a blade head socket, a rotating part, an operating part, a wire and a power plug. The blade head is plugged into the blade head socket, the blade head socket is hinged to the operating part through the rotating part, the end of the operating part leads out the wire, the power plug is fixed to the other end of the wire, and the operating part is provided with an electric cutting button, an electric coagulation button and a bending adjustment knob. A conductive rod is fixed to the right end of the blade head socket, the other end of the conductive rod is fixedly connected to the first gear disk, the conductive sheet is hinged to the first gear disk, the bending adjustment knob is inserted into the operating part and can be rotated on the operating part, the insertion end of the bending adjustment knob is fixed to the second gear disk, the first gear disk and the second gear disk are connected by a toothed belt to form a bending adjustment mechanism. The front end of the electric knife pen can be bent and adjusted, which can easily and quickly extend the front end of the electric knife head to the tissue that needs electric cutting or electric coagulation, saving operation time and reducing operation risks.

[0004] The shortcomings of the above-mentioned existing technologies are that the angle adjustment of the blade is achieved by bending the rotating part, but the rotating part is too large to be introduced into the human body. It is only suitable for in vitro surgery and has a limited scope of application. Utility Model Content

[0005] The purpose of the utility model is to provide an electrocoagulation knife to solve the above-mentioned deficiencies in the prior art.

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

[0007] An electrocoagulation knife comprises a handheld rod and a knife head. An introduction rod is provided between the handheld rod and the knife head. The introduction rod comprises a first section and a second section rotatably connected to the first section.

[0008] In the above-mentioned electrocoagulation knife, an elastic member is provided between the first section and the second section.

[0009] In the above-mentioned electrocoagulation knife, the elastic member is an arc-shaped plate structure, and the two ends of the elastic member are respectively connected to the first section and the second section.

[0010] In the above-mentioned electrocoagulation knife, a protective cover is provided between the first section and the second section.

[0011] In the above-mentioned electrocoagulation knife, a wedge-shaped portion is provided on the second section, a transmission rod is slidably provided on the first section, and the wedge-shaped portion is located on the movement stroke of the transmission rod.

[0012] In the above-mentioned electrocoagulation knife, an extension portion is provided on the wedge-shaped portion.

[0013] The above-mentioned electrocoagulation knife further includes a power assembly for driving the transmission rod to move toward the wedge-shaped portion.

[0014] In the above-mentioned electrocoagulation knife, the power assembly includes a control button, a through hole is provided on the hand-held rod, and the control button passes through the through hole and is fixedly connected to the transmission rod.

[0015] In the above-mentioned electrocoagulation knife, the control button is provided with a non-return assembly for fixing the position of the control button.

[0016] In the above-mentioned electrocoagulation knife, the non-return assembly includes a non-return rod elastically arranged on the control button, a clamping plate is arranged inside the hand-held rod, and the non-return rod is clamped with the clamping plate.

[0017] In the above technical solution, the utility model provides an electrocoagulation knife, which divides the introduction rod into a first section and a second section. The second section is subjected to force to drive the knife head to rotate, so as to reduce the size of the rotating part when the knife head is bent, so that the electrocoagulation knife can be bent in the body to achieve the effect of cutting human tissue at multiple angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the cross-sectional structure of an electrocoagulation knife provided in an embodiment of the utility model;

[0020] Figure 2 for Figure 1 A magnified schematic diagram of the local structure at center A;

[0021] Figure 3 for Figure 1 Enlarged schematic diagram of the local structure at point B in the middle.

[0022] Description of reference numerals:

[0023] 1. Handle rod; 2. Cutting head; 201. Working end; 202. Fixed end; 3. Guide rod; 301. First section; 302. Second section; 4. Transmission rod; 6. Elastic member; 7. Protective cover; 8. Wire; 9. Wedge-shaped portion; 10. Matching groove; 11. Extension portion; 12. Control button; 13. Unlocking key; 16. Check rod; 17. Clamping plate; 18. Mounting groove; 19. Snap-in piece; 20. Spring; 21. Through hole. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] In the description of the present invention, it should be understood that the terms "center", "length", "width", "degree", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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, and therefore should not be understood as a limitation on the present invention.

[0026] Reference Figure 1-3 An embodiment of the present invention provides an electrocoagulation knife, comprising a handheld rod 1 and a blade head 2, wherein an introduction rod 3 is provided between the handheld rod 1 and the blade head 2, and the introduction rod 3 comprises a first section 301 and a second section 302 rotatably connected to the first section 301.

[0027] Specifically, the blade head 2 can be divided into a working end 201 and a fixed end 202. One end of the fixed end 202 is an integrally formed structure with the working end 201, and the working end 201 is in the form of a thin sheet. The blade head 2 and the introduction rod 3 are inserted into the diseased tissue position inside the human body, and the electrocoagulation knife is energized so that the working end 201 of the blade head 2 can remove the tissue at the diseased position. This is a prior art and will not be described in detail. One of the core innovations of the embodiment of the present utility model is that the introduction rod 3 is divided into a first section 301 and a second section 302 that are rotatably connected to each other. The rotational connection can be a through It rotates in a hinged manner, and the working end 201 is located outside the end face of the second section 302, and the other end of the fixed end 202 is inserted into the second section 302. When the electrocoagulation knife is working, the working end 201 contacts the human tissue, and the first section 301 and the second section 302 of the introduction rod 3 are both wrapped with insulating material. The purpose of such a setting is that when the second section 302 is subjected to a driving force, the second section 302 rotates relative to the first section 301 in a direction away from the first section 301, which can drive the blade 2 to bend in the body to meet the need of cutting tissue at multiple angles when the blade 2 is working.

[0028] As an alternative to the aforementioned hinged connection for driving the cutter head 2 to rotate, an elastic member 6 is preferably provided between the first section 301 and the second section 302. The elastic member 6 may be cylindrical, with its ends connected to the first section 301 and the second section 302, respectively. The elastic member 6 is made of an elastic material such that it has the ability to self-recover after being deformed by force. This arrangement allows the second section 302 to rotate in the opposite direction when the driving force is removed, thereby restoring the guide rod 3 from its original state after being bent.

[0029] Preferably, the elastic member 6 is in an arc-shaped plate-like structure, with its two ends respectively connected to the first section 301 and the second section 302. Specifically, the elastic member 6 is located on one side of the end face of the introduction rod 3. To adapt to the shape of the introduction rod 3, the elastic member 6 is in an arc-shaped plate-like structure as a whole. One end face of the elastic member 6 is fixedly connected to the second section 302, and the other end face is fixedly connected to the first section 301. When the second section 302 is rotated away from the first section 301 by the force, the elastic member 6 also rotates accordingly. When the operation is completed, the driving force of the second section 302 is canceled, and when the elastic member 6 rotates in the opposite direction under the elastic action, it also drives the second section 302 to rotate synchronously, so that the cutting head 2 can have the ability to self-reset after bending.

[0030] Furthermore, a protective cover 7 is provided between the first section 301 and the second section 302. Specifically, a wire 8 connected to the cutting head 2 is provided inside the introduction rod 3. The wire 8 is made of a flexible material. One end of the wire 8 is fixedly connected to the fixed end 202 of the cutting head 2, and the other end passes through the first section 301 of the introduction rod 3 and is connected to the inside of the handheld rod 1. The protective cover 7 is preferably a corrugated tube, which is sleeved on the outside of the wire 8 between the first section 301 and the second section 302. When the angle of the cutting head 2 is adjusted during surgery, the second section 302 rotates to cause the wire 8 to bend. The protective cover 7 is sleeved in the corresponding position to reduce the wear of the wire 8, and the corrugated tube structure does not affect the bending of the wire 8 and the rotation of the second section 302, thereby reducing the risk of wear and breakage of the wire 8 during surgery and increasing the service life of the electrocoagulation knife.

[0031] Furthermore, a wedge-shaped portion 9 is provided on the second section 302 , and a transmission rod 4 is slidably provided on the first section 301 , and the wedge-shaped portion 9 is located on the movement stroke of the transmission rod 4 . Specifically, the wedge-shaped portion 9 is symmetrically arranged about the elastic member 6, and the wedge-shaped portion 9 is a wedge-shaped block structure extended from the end face of the second section 302, and an inclined surface facing the axis direction of the first section 301 is provided in the direction away from the end face of the second section 302, and a matching groove 10 is provided in the first section 301. The matching groove 10 is located at a position corresponding to the inclined surface of the wedge-shaped portion 9 and is parallel to the axis direction inside the first section 301. The transmission rod 4 can slide along the matching groove 10, and the end face of the transmission rod 4 close to the wedge-shaped portion 9 is also provided with an inclined surface. Since the wedge-shaped portion 9 is located on the movement stroke of the transmission rod 4, when the transmission rod 4 is driven to continue to move in the direction of the wedge-shaped portion 9, the transmission rod 4 abuts against the wedge-shaped portion 9, so that the wedge-shaped portion 9 is forced to drive the second section 302 to rotate. In this way, the rotation angle of the second section 302 is adjusted by the length of the movement of the transmission rod 4, that is, the bending degree of the cutter head 2 is affected, so as to adapt to different angle requirements.

[0032] Furthermore, an extension portion 11 is provided on the wedge-shaped portion 9. The extension portion 11 is an arc-shaped plate-like structure extending from the position of the wedge-shaped portion 9. When the electrocoagulation knife is not bent, the inner wall of the extension portion 11 abuts against the outer wall of the transmission rod 4. Under the elastic action of the elastic member 6, the extension portion 11 tends to move toward the direction of the transmission rod 4, making the structure more stable when not bent. At the same time, the extension portion 11 is in the movement stroke of the transmission rod 4. After the transmission rod 4 continues to move toward the direction of the cutter head 2 due to the driving force and completely passes through the wedge-shaped portion 9, it abuts against the extension portion 11. The extension portion 11 is subjected to force so that the second section 302 continues to bend. This arrangement makes the bending angle of the cutter head 2 larger, so that the electrocoagulation knife can act on human tissue in a larger range.

[0033] As mentioned above, in order to bend the second section 302 under force, a power assembly is also included for driving the transmission rod 4 to move toward the wedge-shaped portion 9. The power assembly can be an existing reciprocating drive assembly such as an electromagnet, which provides a reciprocating drive force for the transmission rod 4 by turning the electromagnet on and off.

[0034] Preferably, the power assembly includes a control button 12. A through hole 21 is formed on the handle bar 1. The control button 12 passes through the through hole 21 and is fixedly connected to the transmission rod 4. Specifically, the control button 12 is a rectangular block fixed to the outer wall of the handle bar 1. The through hole 21 provides a space for the control button 12 to move. During surgery, by applying a driving force toward the cutting head 2 to the control button 12, the control button 12 is forced to drive the transmission rod 4 toward the cutting head 2, thereby providing power to bend the cutting head 2.

[0035] Furthermore, a check assembly is provided on the control button 12 for fixing the position of the control button 12; preferably, the check assembly includes a check rod 16 elastically provided on the control button 12, and a clamping plate 17 is provided inside the hand-held rod 1, and the check rod 16 is clamped with the clamping plate 17. Specifically, an unlocking key 13 is slidably provided on the control button 12, and its cross section is preferably T-shaped and fixedly connected to the check rod 16. The check rod 16 is preferably an L-shaped rod structure, one end of which is fixedly connected to the unlocking key 13, and the other end is provided with a card piece 19, and a spring 20 is provided between the check rod 16 and the control button 12. A mounting groove 18 arranged parallel to the introduction rod 3 is provided inside the hand-held rod 1, and a card plate 17 is provided in the mounting groove 18. The cross section of the card plate 17 is a plurality of right-angled triangle structures arranged in an axial array. The card plate 17 is located on the movement stroke of the card piece 19 and the end face of the card piece 19 is adapted to its shape, that is, the card piece 19 can be engaged with the card plate 17. The purpose of such a setting is that when the angle of the cutter head 2 needs to be adjusted, the control button 12 is pushed toward the direction of the cutter head 2, thereby driving the check rod 16. The locking piece 19 moves synchronously, so that the inclined surface of the locking piece 19 abuts against the inclined surface of the teeth of the card plate 17, and the locking piece 19 moves in the direction away from the card plate 17 to achieve avoidance and store force on the spring 20. When the inclined surface of the locking piece 19 abuts against the inclined surface of the teeth of the card plate 17, the elastic force of the spring 20 is released, so that the locking piece 19 is engaged with the other tooth of the card plate 17 to achieve the anti-rebound effect. At this time, the driving force of the control button 12 is canceled, so that the position of the control button 12 and the transmission rod 4 can be fixed, thereby locking the angle of the blade 2 to increase the stability when cutting tissue. When the operation is completed, the unlocking button 13 is pressed to make the locking piece 19 move away from the card plate 17. At this time, the control button 12 is unlocked to facilitate the reset of the unlocking button 13, the transmission rod 4 and the blade 2.

[0036] Preferably, the cross section of the control button 12 is T-shaped, so that when the control button 12 slides, the position of the through hole 21 can always be blocked to prevent dust from entering the through hole 21.

[0037] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An electrocoagulation knife, comprising a handheld rod and a knife head, wherein an introduction rod is provided between the handheld rod and the knife head, characterized in that: The introduction rod includes a first section and a second section rotatably connected to the first section.

2. The electrocoagulation knife according to claim 1, characterized in that: An elastic member is provided between the first section and the second section.

3. The electrocoagulation knife according to claim 2, characterized in that: The elastic member is an arc-shaped plate structure, and two ends of the elastic member are respectively connected to the first section and the second section.

4. The electrocoagulation knife according to claim 3, characterized in that: A protective cover is provided between the first section and the second section.

5. The electrocoagulation knife according to claim 3, characterized in that: A wedge-shaped portion is provided on the second section, a transmission rod is slidably provided on the first section, and the wedge-shaped portion is located on the movement stroke of the transmission rod.

6. The electrocoagulation knife according to claim 5, characterized in that: An extension portion is provided on the wedge-shaped portion.

7. The electrocoagulation knife according to claim 5, characterized in that: The utility model also includes a power assembly for driving the transmission rod to move toward the wedge-shaped portion.

8. The electrocoagulation knife according to claim 7, characterized in that: The power assembly includes a control button. A through hole is provided on the hand-held rod. The control button passes through the through hole and is fixedly connected to the transmission rod.

9. The electrocoagulation knife according to claim 8, characterized in that: The control button is provided with a non-return component for fixing the position of the control button.

10. The electrocoagulation knife according to claim 9, characterized in that: The non-return assembly includes a non-return rod elastically arranged on the control button, a clamping plate is arranged inside the hand-held rod, and the non-return rod is clamped with the clamping plate.

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