High frequency radio frequency anastomat

Abstract

The application discloses a high-frequency radio frequency anastomat, a long push-knife rod passes through a conductive metal ring, the long push-knife rod comprises an outer insulating section and an outer conductive section which are sequentially arranged from a front end to a rear end, the front end of the outer insulating section is electrically connected with a cutting knife head, an insulating layer is coated on the outer insulating section, the rear end of the outer insulating section is connected with the front end of the outer conductive section, the rear end of the outer conductive section is insulatedly connected with the front end of a short push-knife rod, the rear end of the short push-knife rod is connected with a motor, when the cutting knife head is located at a start point of an advancing stroke, the conductive metal ring is sleeved and contacted on the rear end of the front end of the outer insulating section, and when the cutting knife head is not located at the start point of the advancing stroke, the outer conductive section is located in the conductive metal ring and is contacted with the conductive metal ring. The application realizes the closed effect of cutting and hemostasis at the same time by using radio frequency current to coagulate the two sides of the cut tissue, solves the defects in the prior art, and effectively improves the efficiency and safety of surgical operation.

Description

Technical Field

[0001] This invention relates to the field of laparoscopic surgical medical device technology, specifically to a high-frequency radiofrequency stapler. Background Technology

[0002] Currently, the staplers widely used in clinical surgery are mainly divided into mechanical staplers, electric staplers, and electrocoagulation devices. Traditional mechanical staplers complete tissue processing through physical cutting and suturing, but they have the following drawbacks:

[0003] 1. Intraoperative bleeding control was not ideal, and electrocoagulation or suturing techniques were required to stop the bleeding after mechanical cutting, which increased the number of surgical steps and time.

[0004] 2. Electric staplers improve the ease of operation by using a motor drive, which is based on traditional mechanical staplers. However, their function is still limited to cutting and suturing, and they cannot achieve immediate hemostasis. They still need to be used in conjunction with other hemostatic tools during the operation.

[0005] 3. Electrocoagulation devices (such as LigaSure) achieve tissue coagulation and sealing through bipolar radiofrequency current. However, their function is limited; they can only be used for tissue closure or vascular hemostasis and cannot be used for cutting operations simultaneously. A scalpel or other cutting instruments must be used separately, increasing the complexity of the procedure. Furthermore, the limited range of radiofrequency action may result in some larger tissues not being completely coagulated, increasing the risk of bleeding. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned deficiencies in the prior art by providing a high-frequency radiofrequency anastomosis device. By electrifying the cutting head during the cutting process, radiofrequency current is used to coagulate the edges of the tissue on both sides of the cut while cutting the tissue, thereby achieving a sealing effect of simultaneous cutting and hemostasis. This solves several deficiencies in the prior art and effectively improves the efficiency and safety of surgical procedures.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A high-frequency radio frequency anastomosis device includes a motor and a long pusher rod that passes through a conductive metal ring. The long pusher rod includes an outer insulating section and an outer conductive section arranged sequentially from the front end to the rear end. The front end of the outer insulating section is electrically connected to a cutting head. An insulating layer is coated on the outside of the outer insulating section. The rear end of the outer insulating section is connected to the front end of the outer conductive section. The rear end of the outer conductive section is insulatedly connected to the front end of a short pusher rod. The rear end of the short pusher rod is connected to the motor. When the cutting head is at the starting point of the infeed stroke, the conductive metal ring is sleeved and contacts the rear end of the front outer insulating section. When the cutting head is not at the starting point of the infeed stroke, the outer conductive section is located in the conductive metal ring and contacts the conductive metal ring.

[0009] As described above, the outer ring of the conductive metal ring is equipped with a clamping member, which is fixed inside the gun body.

[0010] As described above, the conductive metal ring is connected to the RF host power cord.

[0011] As described above, the cutting head is located between the staple cartridge seat and the staple seat of the pliers assembly.

[0012] As mentioned above, a feed groove is provided on the opposite surfaces of the staple cartridge seat and the staple holder.

[0013] As described above, the rear end of the cutting head and the front end of the outer insulation section are electrically connected. The cutting head has wings on both sides that correspond to the positions of the feed grooves on the staple cartridge and the feed grooves on the anvil. The front end of the cutting head is the cutting blade.

[0014] As described above, except for the cutting edge and the electrical connection point with the outer insulation section, the cutting head is coated with an insulating layer.

[0015] As mentioned above, the tool path groove is provided with an insulating layer.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. Solving the problem of separating cutting and hemostasis: Existing staplers typically require cutting and hemostasis to be performed separately, which is cumbersome and inefficient. This invention uses an electrified cutting tip to simultaneously coagulate tissue during the cutting process, avoiding the need for additional hemostasis in traditional devices, thereby simplifying the surgical procedure and reducing surgical time.

[0018] 2. Improved intraoperative hemostasis: Traditional stapler sutures require additional electrocoagulation devices for hemostasis after cutting and suturing. This invention, by combining radiofrequency current, enables rapid coagulation of tissue edges on both sides of the cut surface during cutting and suturing, significantly improving intraoperative hemostasis at the cutting site.

[0019] 3. Reduced risk of thermal damage: By electrifying only the cutting edge of the cutting head, rapid and minimal contact area enables more uniform and effective tissue coagulation, reducing damage to surrounding internal tissues and improving the quality of postoperative recovery for patients.

[0020] 4. Improved surgical safety and convenience: The design of this invention allows the functions of cutting and hemostasis to be completed in the same tool, avoiding the trouble of changing instruments multiple times, reducing the risk of instrument contamination and misoperation during surgery, and making the operation simpler.

[0021] 5. Adapting to the needs of minimally invasive surgery and improving surgical precision: In minimally invasive surgery, surgeons require more precise and efficient tools to handle tissues. This invention can accurately complete cutting and coagulation operations within a limited operating space, making it particularly suitable for minimally invasive surgeries with high precision requirements.

[0022] 6. Solving the problem of existing technologies being unable to simultaneously perform cutting and hemostasis: Existing radiofrequency coagulation devices typically lack cutting capabilities, or traditional staplers cannot perform cutting and hemostasis simultaneously. Through the innovative design of this invention, tissue cutting and hemostasis can be completed in the same process, thus overcoming the shortcomings of existing technologies and improving the overall surgical outcome.

[0023] In summary, by combining radiofrequency technology with cutting function, this invention not only solves the problems of poor hemostasis and cumbersome operation in existing technologies, but also enables simultaneous cutting and hemostasis during surgery, improving surgical efficiency and safety, and has broad application prospects. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a structural diagram showing the connection between the conductive metal ring and the long pusher rod.

[0026] Figure 3 A schematic diagram of the internal structure of the gun body;

[0027] Figure 4 A schematic diagram showing the positional state of the external conductive section and the conductive metal ring when the long pusher bar is conductive;

[0028] Figure 5 This is an exploded structural diagram of the cutting blade and pliers assembly;

[0029] In the diagram: 1. Clamping head assembly; 2. Gun barrel; 3. Gun body; 4. Gun handle; 5. RF switch; 6. RF host power cord; 7. Long pusher rod; 8. Conductive metal ring; 9. Short pusher rod; 10. First clamping arc plate; 11. Second clamping arc plate; 7. Long pusher rod; 7-1. Front outer insulation section; 7-2. External conductive section; 9. Short pusher rod; 10. First clamping arc plate; 11. Second clamping arc plate; 12. Cutting head; 13. Cutting blade; 14. Wing; 15. Staple cartridge seat; 16. Staple anchor seat; 17. Cutting groove. Detailed Implementation

[0030] To facilitate understanding and implementation of the present invention by those skilled in the art, the present invention will be further described in detail below with reference to implementation examples. It should be understood that the implementation examples described herein are for illustration and explanation only and are not intended to limit the present invention.

[0031] Example 1:

[0032] A high-frequency radio frequency anastomosis device includes a clamp assembly 1, a barrel 2, a barrel 3, and a handle 4. The clamp assembly 1 is connected to the front end of the barrel 2, the rear end of the barrel 2 is connected to the barrel 3, and the handle 4 is connected to the barrel 3. A motor and a short pusher rod 9 are disposed inside the barrel 3. The motor and the rear end of the short pusher rod 9 are connected. The front end of the short pusher rod 9 is insulated from the rear end of a long pusher rod 7, which is disposed in the barrel 2. The clamp assembly 1 includes a staple cartridge seat 15 and a staple abutment seat 16. The opening and closing control and anastomosis control of the staple cartridge seat 15 and the staple abutment seat 16 are existing structures and are not improvements of this invention, and will not be described in this invention. A cutting head 12 is disposed between the staple cartridge seat 15 and the staple abutment seat 16, and the front end of the long pusher rod 7 is electrically connected to the cutting head 12.

[0033] The long pusher rod 7 includes an outer insulating section 7-1 and an outer conductive section 7-2 arranged sequentially from the front end to the rear end. The front end of the outer insulating section 7-1 is electrically connected to the cutting head 12. Except for the point of electrical connection with the cutting head 12, the outer insulating section 7-1 is coated with an insulating layer. The rear end of the outer insulating section 7-1 is connected to the front end of the outer conductive section 7-2. The rear end of the outer conductive section 7-2 is insulated from the front end of the short pusher rod 9. The outer wall of the outer conductive section 7-2 has no insulating layer. In practical applications, the outer insulating section 7-1 and the outer conductive section 7-2 are integrally formed. The outer insulating section 7-1 and the outer conductive section 7-2 are electrically conductive internally, while the outer conductive section 7-2 is insulated from the short pusher rod 9 and is not conductive.

[0034] In some embodiments, the insulating layer disposed on the outside of the outer insulating section 7-1 is a polyimide coating.

[0035] A conductive metal ring 8 is provided at the front end of the gun body 3. A clamping member is provided around the outer ring of the conductive metal ring 8. The clamping member is fixed inside the gun body 3. The clamping member includes a first clamping arc plate 10 and a second clamping arc plate 11. The first clamping arc plate 10 and the second clamping arc plate 11 are fastened together to clamp and fix the conductive metal ring 8 to the front end of the first clamping arc plate 10 and the second clamping arc plate 11 as a whole.

[0036] The long pusher rod 7 passes through the conductive metal ring 8, and the motor drives the cutting head 12 to advance and retract in sequence through the short pusher rod 9 and the long pusher rod 7.

[0037] When the cutting head 12 is at the starting point of the feed stroke (the forward stroke of the cutting head 12 is the feed stroke), the conductive metal ring 8 is sleeved and contacts the rear end of the front outer insulating section 7-1. Since the outer wall of the front outer insulating section 7-1 is coated with an insulating layer, the conductive metal ring 8 and the long push rod 7 are in an insulating state. When the cutting head 12 moves forward after leaving the starting point of the feed stroke, the outer conductive section 7-2 slides into the conductive metal ring 8 and contacts the conductive metal ring 8. Since the outer conductive section 7-2 is not coated with an insulating layer, the conductive metal ring 8 and the long push rod 7 are electrically connected. The conductive metal ring 8 is connected to the RF host power line 6. The RF switch is turned on, and the RF current transmitted from the RF host power line 6 is transmitted to the long push rod 7 through the conductive metal ring 8, and then to the cutting head 12 through the long push rod 7. The cutting head 12 performs the feed action between the staple cartridge seat 15 and the staple seat 16 to perform cutting and electrocoagulation.

[0038] When the cutting head 12 retracts, the RF switch is turned off, disconnecting the RF host power cable 6 from the conductive metal ring 8. When the cutting head 12 is at the end of its retraction stroke (the stroke after the cutting head 12 moves is the retraction stroke, and the end of the retraction stroke and the beginning of the infeed stroke are at the same position), the conductive metal ring 8 re-fits onto the rear end of the front outer insulating section 7-1. Because the outer wall of the front outer insulating section 7-1 is coated with an insulating layer, the conductive metal ring 8 and the long pusher rod 7 are insulated. Subsequently, the mating operation can be performed through the staple cartridge seat 15 and the staple abutment seat 16 of the clamping head assembly.

[0039] This invention combines radiofrequency current with a cutting head to achieve coagulation and hemostasis on both sides of the incision while cutting tissue. It eliminates the need for step-by-step operations or instrument changes, greatly simplifying the surgical procedure, shortening the operation time, reducing operational complexity, and avoiding the disadvantages of traditional equipment that require additional hemostasis operations. This simplifies the surgical procedure and reduces the operation time.

[0040] Because radiofrequency current can instantly coagulate the tissue at the incision edge during the cutting process, this invention effectively reduces the occurrence of intraoperative bleeding, which not only reduces the pressure on doctors to deal with bleeding, but also significantly improves the success rate of the surgery and the patient's intraoperative safety.

[0041] The design of this invention allows the functions of cutting and hemostasis to be completed in the same tool, and subsequent suturing can be performed quickly, avoiding the trouble of changing instruments multiple times, reducing the risk of instrument contamination and misoperation during surgery, and making the operation simpler.

[0042] This invention can simultaneously perform tissue cutting and coagulation hemostasis, and can be used in complex surgical scenarios that require efficient hemostasis and tissue protection, such as routine surgery, minimally invasive surgery, and precision cutting, providing a more comprehensive solution for clinical surgery.

[0043] Example 2:

[0044] The length of the outer conductive section 7-2 can be adjusted according to the stroke of the cutting head 12. For example, it can be made so that the conductive metal ring 8 is always in contact with the outer conductive section 7-2 during the forward movement of the cutting head 12, and the outer conductive section 7-2 just slides into the conductive metal ring 8 and contacts the outer conductive section 7-2 when the cutting head 12 leaves the starting point of the feed stroke. That is, the conductive metal ring 8 is in contact with the front outer insulating section 7-1 only when the cutting head 12 is at the starting point of the feed stroke / the ending point of the retraction stroke (the starting point of the feed stroke and the ending point of the retraction stroke are at the same position, and the ending point of the feed stroke and the starting point of the retraction stroke are at the same position). When the cutting head 12 is not at the starting point of the feed stroke / the ending point of the retraction stroke, the conductive metal ring 8 is always in contact with the outer conductive section 7-2.

[0045] Everything else is the same as in Example 1.

[0046] Example 3:

[0047] In this embodiment, the staple cartridge seat 15 and the anvil seat 16 of the clamp head assembly 1 are both provided with a feed groove 17 on their opposing surfaces. The rear end of the cutting head 12 is electrically connected to the front end of the outer insulating section 7-1. Wings 14 are provided on both sides of the cutting head 12. The front end of the cutting head 12 is a cutting edge. The wings 14 on both sides of the cutting head 12 correspond to the feed grooves 17 on the staple cartridge seat 15 and the anvil seat 16, respectively. This allows the wings 14 on both sides of the cutting head 12 to be inserted into the feed grooves 17 on the staple cartridge seat 15 and the anvil seat 16, even when the staple cartridge seat 15 and the anvil seat 16 are closed. The cutting head 12 can still perform cutting and retraction. Except for the cutting edge and the part electrically connected to the outer insulating section 7-1, the cutting head 12 is coated with an insulating layer.

[0048] As a preferred solution, to prevent damage to the insulating coating of the cutting head 12 and leakage of electricity during the sliding retraction process, the cutting groove 17 on the staple cartridge seat 15 and the cutting groove 17 on the anvil seat 16 are both coated with an insulating layer, providing double insulation protection.

[0049] In this embodiment, the insulating layer is a polyimide coating. Currently, ultrasonic cutting and bipolar radiofrequency electrocoagulation equipment use polytetrafluoroethylene (PTFE) coatings and ceramic sheets for insulation. Due to the poor mechanical properties of PTFE and the high brittleness of ceramic sheets, neither is suitable for insulating the feed groove of an electric stapler. This is the first time that a cost-effective and mechanically sound polyimide material has been used to insulate the components of the stapler.

[0050] In this embodiment, by electrifying only the cutting edge of the cutting head, a faster and smaller contact area can achieve more uniform and effective tissue coagulation, reducing damage to surrounding internal tissues and improving the patient's postoperative recovery quality.

[0051] Everything else is the same as in Example 1.

[0052] It should be noted that the embodiments described in this invention are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains can make various modifications or additions to the described embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A high-frequency radio frequency anastomosis device, comprising a motor, characterized in that, It also includes a long pusher rod (7), which passes through a conductive metal ring (8). The long pusher rod (7) includes an outer insulating section (7-1) and an outer conductive section (7-2) arranged sequentially from the front end to the rear end. The front end of the outer insulating section (7-1) is electrically connected to the cutting head (12). The outer insulating section (7-1) is coated with an insulating layer. The rear end of the outer insulating section (7-1) is connected to the front end of the outer conductive section (7-2). The rear end of the outer conductive section (7-2) is insulated from the front end of the short pusher rod (9). The rear end of the short pusher rod (9) is connected to the motor. When the cutting head (12) is at the starting point of the feed stroke, the conductive metal ring (8) is sleeved and contacts the rear end of the front outer insulating section (7-1). When the cutting head (12) is not at the starting point of the feed stroke, the outer conductive section (7-2) is located in the conductive metal ring (8) and contacts the conductive metal ring (8). When the cutting head 12 moves forward after leaving the starting point of the feed stroke, the outer conductive section 7-2 slides into the conductive metal ring 8 and contacts the conductive metal ring 8. The conductive metal ring 8 is connected to the RF host power line 6, the RF switch is turned on, and the RF current transmitted from the RF host power line 6 is transmitted to the long push rod 7 through the conductive metal ring 8, and then to the cutting head 12 through the long push rod 7. When the cutting head 12 retracts, the RF switch is turned off, disconnecting the RF host power cable 6 from the conductive metal ring 8. When the cutting head 12 is at the end of the retraction stroke, the conductive metal ring 8 re-fits onto the rear end of the front outer insulating section 7-1, and the conductive metal ring 8 and the long push rod 7 are in an insulated state. Both the staple cartridge seat (15) and the staple holder (16) have a feed groove (17) on their opposite surfaces. The rear end of the cutting head (12) and the front end of the outer insulation section (7-1) are electrically connected. The cutting head (12) has wings (14) on both sides corresponding to the positions of the feed groove (17) on the staple cartridge seat (15) and the feed groove (17) on the anvil seat (16). The front end of the cutting head (12) is the cutting blade. Except for the cutting edge and the electrical connection point with the outer insulation section (7-1), the cutting head (12) is coated with an insulating layer. The tool groove (17) is provided with an insulating layer. The conductive metal ring (8) has a clamping member on its outer ring, which is fixed inside the gun body (3). The conductive metal ring (8) is connected to the RF host power cord (6). The cutting head (12) is located between the staple cartridge seat (15) and the staple seat (16) of the pliers assembly (1).

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