High-frequency radio frequency anastomat

Abstract

A long knife pushing rod penetrates through a conductive metal ring, the long knife pushing rod comprises an outer insulation section and an outer conductive section which are sequentially arranged from the front end to the rear end, the front end of the outer insulation section is electrically connected with a cutting knife head, the outer portion of the outer insulation section is coated with an insulation layer, the rear end of the outer insulation section is connected with the front end of the outer conductive section, and the rear end of the outer conductive section is connected with the cutting knife head. The rear end of the external conductive section is in insulation connection with the front end of the short push broach rod, the rear end of the short push broach rod is connected with the motor, and when the cutting tool bit is located at the starting point of the feed stroke, the conductive metal ring is in contact with the rear end of the front-end external insulation section in a sleeving mode. And the external conductive section is positioned in the conductive metal ring and is in contact with the conductive metal ring. While tissue is cut, the edges of the cut tissue on the two sides are solidified through radio-frequency current, so that the sealing effect of simultaneous cutting and hemostasis is achieved, multiple defects existing in the prior art are overcome, and the efficiency and safety of a surgical operation are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of laparoscopic surgery medical instruments, and in particular to a high-frequency radio frequency stapler. Background Art

[0002] At present, the staplers widely used in clinical surgical operations are mainly divided into mechanical staplers, electric staplers and electrocoagulation devices. Traditional mechanical staplers complete tissue processing through physical cutting and suturing, but have the following defects:

[0003] 1. Intraoperative bleeding control is not ideal. After mechanical cutting, electrocoagulation or suturing techniques are required to stop bleeding, which increases the number of surgical steps and time.

[0004] 2. Compared with traditional mechanical staplers, electric staplers have improved their operational convenience through motor drive, but their functions are still limited to cutting and suturing. They cannot achieve immediate hemostasis and still need to be used in conjunction with other hemostasis tools during surgery.

[0005] 3. Electrocoagulation devices (such as LigaSure, etc.) use bipolar radiofrequency current to achieve tissue coagulation and sealing, but they have a single function and can only be used for tissue closure or vascular hemostasis. They cannot perform cutting operations at the same time and require the use of a scalpel or other cutting instruments, which increases the complexity of the operation. In addition, the radiofrequency range is limited, which may result in some larger tissues not being completely coagulated, increasing the risk of bleeding. Summary of the invention

[0006] The purpose of the present invention is to address the above-mentioned defects in the prior art and to provide a high-frequency radio frequency stapler, which achieves a simultaneous cutting and hemostatic sealing effect by charging the cutting head during the cutting process and utilizing radio frequency current to coagulate the edges of the tissue on both sides of the cut while cutting the tissue, thereby solving multiple defects in the prior art and effectively improving the efficiency and safety of surgical operations.

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

[0008] A high-frequency radio frequency stapler comprises a motor and a long pusher rod, the long pusher rod passes through a conductive metal ring, the long pusher rod comprises an outer insulating section and an outer conductive section arranged in sequence from the front end to the rear end, the front end of the outer insulating section is electrically connected to a cutting head, the outer portion of the outer insulating section is coated with an insulating layer, the rear end of the outer insulating section is connected to the front end of the external conductive section, the rear end of the external 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 located at the starting point of a feed stroke, the conductive metal ring is sleeved and contacts the rear end of the front end outer insulating section, and when the cutting head is not at the starting point of a feed stroke, the outer conductive section is located in the conductive metal ring and contacts the conductive metal ring.

[0009] As mentioned above, the outer hoop of the conductive metal ring is provided with a clamping piece, and the clamping piece is fixed in the gun body.

[0010] The conductive metal ring is connected to the RF host power line as described above.

[0011] As mentioned above, the cutting head is located between the nail magazine seat and the nail support seat of the clamp head assembly.

[0012] As mentioned above, the opposite surfaces of the nail magazine seat and the nail support seat are both provided with cutting grooves.

[0013] As described above, the rear end of the cutting head and the front end of the outer insulating section are electrically connected, and wings corresponding to the positions of the cutting grooves on the nail magazine seat and the nail support seat are respectively arranged on both sides of the cutting head, and the front end of the cutting head is a cutting blade.

[0014] As mentioned above, except for the cutting blade and the portion electrically connected to the outer insulating section, all other portions of the cutting head are coated with an insulating layer.

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

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

[0017] 1. Solve the problem of separation of cutting and hemostasis: Existing staplers usually require cutting and hemostasis to be performed separately, which is cumbersome and inefficient. The present invention charges the cutting head and performs tissue coagulation during the cutting process, thus avoiding the disadvantage of traditional equipment requiring additional hemostasis operations, thereby simplifying the surgical process and reducing the surgical time.

[0018] 2. Improve the intraoperative hemostasis effect: After the traditional stapler is cut and sutured, it is necessary to use other electrocoagulation devices for hemostasis. The present invention combines the effect of radio frequency current to make the tissue edges on both sides of the cutting surface coagulate rapidly during cutting and suture, which significantly improves the intraoperative hemostasis effect of the cutting part.

[0019] 3. Reduce the risk of thermal damage: By charging only the cutting blade of the cutting head, more uniform and effective tissue coagulation can be achieved quickly and with the smallest possible contact area, reducing damage to surrounding internal tissues and improving the patient's postoperative recovery quality.

[0020] 4. Improve the safety and convenience of surgical operations: The design of the present invention enables the functions of cutting and hemostasis to be completed in the same tool, avoiding the trouble of multiple instrument changes, reducing the risk of instrument contamination and misoperation during surgery, and making the operation easier.

[0021] 5. Adapt to the needs of minimally invasive surgery and improve surgical accuracy: In minimally invasive surgery, doctors need more precise and efficient tools to complete tissue processing. The present invention can accurately complete cutting and coagulation operations in a limited operating space, and is particularly suitable for minimally invasive surgery with high precision requirements.

[0022] 6. Solve the problem that the existing technology cannot simultaneously complete cutting and hemostasis: The radiofrequency coagulation device in the existing technology usually does not have a cutting function, or the traditional stapler cannot simultaneously cut and stop bleeding. Through the innovative design of the present invention, tissue cutting and hemostasis can be completed in the same process, thus solving the shortcomings of the existing technology and improving the overall effect of the operation.

[0023] In summary, the present invention combines radio frequency technology with the cutting function, which not only solves the problems of poor hemostasis effect and complicated operation in the prior art, but also realizes the simultaneous cutting and hemostasis during surgery, improves surgical efficiency and safety, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 It is a structural diagram of the connection between the conductive metal ring and the long pusher rod;

[0026] Figure 3 It is a schematic diagram of the internal structure of the gun body;

[0027] Figure 4 It is a schematic diagram of the position state of the external conductive segment and the conductive metal ring when the long pusher rod is conducting;

[0028] Figure 5 It is a schematic diagram of the exploded structure of the cutting head and the clamp head assembly;

[0029] In the figure: 1, clamp head assembly; 2, gun barrel; 3, gun body; 4, gun handle; 5, RF switch; 6, RF host power cord; 7, long push knife rod; 8, conductive metal ring; 9, short push knife rod; 10, first clamping arc plate; 11, second clamping arc plate; 7, long push knife rod; 7-1, front end outer insulating section; 7-2, external conductive section; 9, short push knife rod; 10, first clamping arc plate; 11, second clamping arc plate; 12, cutting head; 13, cutting blade; 14, wing; 15, nail magazine seat; 16, nail support seat; 17, knife groove. DETAILED DESCRIPTION

[0030] In order to facilitate those skilled in the art to understand and implement the present invention, the present invention is further described in detail below in conjunction with implementation examples. It should be understood that the implementation examples described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0031] Embodiment 1:

[0032] A high-frequency radio frequency stapler includes a clamp head assembly 1, a gun rod 2, a gun body 3, and a gun handle 4. The clamp head assembly 1 is connected to the front end of the gun rod 2, the rear end of the gun rod 2 is connected to the gun body 3, and the gun handle 4 is connected to the gun body 3. A motor and a short pusher rod 9 are arranged in the gun body 3. The motor is connected to the rear end of the short pusher rod 9. The front end of the short pusher rod 9 is insulated and connected to the rear end of a long pusher rod 7. The long pusher rod 7 is arranged in the gun rod 2. The clamp head assembly 1 includes a nail magazine seat 15 and a nail support seat 16. The opening and closing control and the anastomosis control of the nail magazine seat 15 and the nail support seat 16 are all existing structures. This is not an improvement point of the present invention and is not described in the present invention. A cutting head 12 is arranged between the nail magazine seat 15 and the nail support seat 16, and the front end of the long pusher rod 7 is electrically connected to the cutting head 12.

[0033] The long pusher bar 7 includes an outer insulating section 7-1 and an outer conductive section 7-2 arranged in sequence from the front end to the rear end, that is, the front end of the outer insulating section 7-1 is electrically connected to the cutting head 12, and the outer insulating section 7-1 is not coated with an insulating layer except for the portion where it is electrically connected to the cutting head 12, and the other parts are 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 and connected to the front end of the short pusher bar 9, and the outer conductive section 7-2 outer wall is not provided with an insulating layer. In actual 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 inner part of the outer conductive section 7-2 are electrically conductive, and the outer conductive section 7-2 and the short pusher bar 9 are insulated and connected but not electrically conductive.

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

[0035] A conductive metal ring 8 is provided at the front end of the gun body 3, and a clamping piece is provided on the outer ring of the conductive metal ring 8. The clamping piece is fixed in the gun body 3, and the clamping piece 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 buckled together to clamp and fix the conductive metal ring 8 at 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 retreat through the short pusher rod 9 and the long pusher rod 7 in turn.

[0037] When the cutting head 12 is located at the starting point of the feed stroke (the forward movement of the cutting head 12 is the feed stroke), the conductive metal ring 8 is sleeved and contacted on the rear end of the front end outer insulating section 7-1. Since the outer wall of the front end outer insulating section 7-1 is coated with an insulating layer, the conductive metal ring 8 and the long push rod 7 are insulated. When the cutting head 12 leaves the starting point of the feed stroke and moves forward, the external conductive section 7-2 slides into the conductive metal ring 8 and contacts the conductive metal ring 8. Since the external 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. 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 is transmitted to the cutting head 12 through the long push rod 7. The cutting head 12 performs a feed action between the nail magazine seat 15 and the nail stop seat 16 to implement cutting and electrocoagulation.

[0038] When the cutting head 12 performs the retracting action, the RF switch is turned off, the connection between the RF host power line 6 and the conductive metal ring 8 is cut off, and the cutting head 12 is at the end of the retracting stroke (the stroke of the cutting head 12 is the retracting stroke, and the end of the retracting stroke and the starting point of the feeding stroke are at the same position), the conductive metal ring 8 is re-set 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 insulated. Then, the stapler seat 15 and the stapler seat 16 of the clamp head assembly can be used to perform the anastomosis operation.

[0039] The present invention combines radio frequency current with a cutting blade to achieve coagulation and hemostasis on both sides of the incision while cutting tissue. There is no need for step-by-step operation or replacement of instruments, which greatly simplifies the surgical process, shortens the operation time, reduces the complexity of the operation, and avoids the disadvantage of traditional equipment requiring additional hemostasis operations, thereby simplifying the surgical process and reducing the operation time.

[0040] Since the radio frequency current can instantly coagulate the tissue at the edge of the incision during the cutting process, the present 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 operation and the intraoperative safety of the patient.

[0041] The design of the present invention enables the functions of cutting and hemostasis to be completed in the same tool, and subsequent suturing work can be quickly performed, thus avoiding the trouble of multiple instrument changes, reducing the risk of instrument contamination and misoperation during surgery, and making the operation easier.

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

[0043] Embodiment 2:

[0044] The length of the external conductive segment 7-2 can be adjusted according to the stroke of the cutting head 12. For example, the conductive metal ring 8 can be always sleeved and contacted on the external conductive segment 7-2 when the cutting head 12 moves forward. When the cutting head 12 leaves the starting point of the feed stroke, the external conductive segment 7-2 just slides into the conductive metal ring 8 and contacts the external conductive segment 7-2. That is, the conductive metal ring 8 sleeves and contacts the front end external insulating segment 7-1 only when the cutting head 12 is located at the starting point of the feed stroke / the end point of the retract stroke (the starting point of the feed stroke and the end point of the retract stroke are the same position, and the end point of the feed stroke and the starting point of the retract stroke are the same position). When the cutting head 12 is not at the starting point of the feed stroke / not at the end point of the retract stroke, the conductive metal ring 8 always sleeves and contacts the external conductive segment 7-2.

[0045] The rest is consistent with Example 1.

[0046] Embodiment 3:

[0047] In this embodiment, the nail magazine seat 15 and the nail support seat 16 of the pliers head assembly 1 are both provided with a cutting groove 17 on the opposite surface, the rear end of the cutting head 12 is electrically connected to the front end of the outer insulating section 7-1, and the wings 14 are provided on both sides of the cutting head 12. The front end of the cutting head 12 is a cutting blade, and the wings 14 on both sides of the cutting head 12 correspond to the positions of the cutting groove 17 on the nail magazine seat 15 and the cutting groove 17 on the nail support seat 16, so that even when the nail magazine seat 15 and the nail support seat 16 are closed, the wings 14 on both sides of the cutting head 12 can be respectively inserted into the cutting groove 17 on the nail magazine seat 15 and the cutting groove 17 on the nail support seat 16, and the cutting head 12 can still implement cutting and retracting. Except for the cutting blade and the electrically connected part with the outer insulating section 7-1, the other parts of the cutting head 12 are coated with an insulating layer.

[0048] As a preferred solution, in order to prevent the insulation coating of the cutting blade 12 from being damaged and causing leakage during the sliding and pushing back process, the blade groove 17 on the nail magazine seat 15 and the blade groove 17 on the nail support seat 16 are both coated with an insulation layer, which plays a double insulation protection role.

[0049] In this embodiment, the insulating layer is a polyimide coating. Currently, ultrasonic cutting and bipolar radiofrequency electrocoagulation equipment use polytetrafluoroethylene coating and ceramic sheets for insulation treatment. Due to the poor mechanical properties of polytetrafluoroethylene and the high brittleness of ceramic sheets, they are not suitable for the insulation treatment of the knife groove of the electric stapler. For the first time, a polyimide material with high cost performance and good mechanical properties is used to insulate the components of the stapler.

[0050] In this embodiment, by charging only the cutting blade of the cutting head, more uniform and effective tissue coagulation can be achieved quickly and with as small a contact area as possible, thereby reducing damage to surrounding internal tissues and improving the patient's postoperative recovery quality.

[0051] The rest is consistent with Example 1.

[0052] It should be noted that the embodiments described in the present invention are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments 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 attached claims.

Claims

1. A high-frequency radio frequency stapler, comprising a motor, characterized in that: The invention also comprises a long pusher rod (7), the long pusher rod (7) passes through a conductive metal ring (8), the long pusher rod (7) comprises an outer insulating section (7-1) and an outer conductive section (7-2) arranged in sequence 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 surface of 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 insulatedly connected to 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 located at the starting point of the feed stroke, the conductive metal ring (8) is sleeved and contacts the rear end of the front end 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).

2. A high-frequency radio frequency stapler according to claim 1, characterized in that: The outer ring of the conductive metal ring (8) is provided with a clamping piece, and the clamping piece is fixed in the gun body (3).

3. The high-frequency radio frequency stapler according to claim 1, characterized in that: The conductive metal ring (8) is connected to a radio frequency host power line (6).

4. The high-frequency radio frequency stapler according to claim 1, characterized in that: The cutting blade head (12) is located between the nail magazine seat (15) and the nail anvil seat (16) of the pliers head assembly (1).

5. A high-frequency radio frequency stapler according to claim 4, characterized in that: The nail magazine seat (15) and the nail support seat (16) are both provided with a knife groove (17) on the opposite surfaces thereof.

6. A high-frequency radio frequency stapler according to claim 5, characterized in that: The rear end of the cutting head (12) is electrically connected to the front end of the outer insulating section (7-1), and wings (14) corresponding to the positions of the cutting grooves (17) on the nail magazine seat (15) and the cutting grooves (17) on the nail support seat (16) are respectively arranged on both sides of the cutting head (12), and the front end of the cutting head (12) is a cutting blade.

7. A high-frequency radio frequency stapler according to claim 6, characterized in that: The cutting blade (12) is coated with an insulating layer at all other locations except the cutting blade and the portion electrically connected to the outer insulating section (7-1).

8. The high-frequency radio frequency stapler according to claim 5, characterized in that: The tool groove (17) is provided with an insulating layer.

Images